TWI787526B - bathroom chair - Google Patents

Abstract

The object of the present invention is to make the legs of the folded bathroom chair easy to open. The bathroom chair 100 is equipped with the front leg 10, the rear leg 20, and the rotation mechanism 30 which connects the front leg 10 and the rear leg 20 so that relative rotation is possible. The position where the front foot 10 and the rear foot 20 are mutually rotated so that the lower part of the front foot 10 and the lower part of the rear foot 20 are close to each other is set as the folded position P1, and the lower part of the front foot 10 and the lower part of the rear foot 20 are separated. The position after the mutual rotation of 20 is set as the chair foot opening position P2. Under any one of the front leg 10 and the rear leg 20, there is provided an anti-slip portion 37 which is in contact with the ground 5 at the folded position P1 and the opened position P2 of the chair leg, and whose sliding resistance against the ground 5 is the first resistance. At the bottom of either one of the front leg 10 and the rear leg 20, there is provided a sliding portion 35 which is in contact with the ground 5 at the folded position P1 and whose sliding resistance against the ground 5 is a second resistance which is smaller than the first resistance.

Description

bathroom chair

The present invention relates to a bathroom chair.

For example, in Patent Document 1, a foldable bathroom chair is disclosed. The bathroom chair includes a pair of left and right front legs, a pair of left and right rear legs, a connecting tool for connecting the front legs and the rear legs so as to be relatively rotatable, and a backrest. The upper ends of each pair of left and right front legs are connected by a connecting frame, and a backrest is arranged on the connecting frame. Also, a foot rubber for preventing slippage relative to the ground is attached to each lower end of the front foot and the rear foot.

In the case of the bathroom chair with the legs opened, the bathroom chair can be folded by making the front and rear legs relatively rotate around the link as the axis so that the lower part of the front leg and the lower part of the rear leg are close to each other. On the other hand, in the case of a folded bathroom chair, the legs of the bathroom chair can be opened by making the front and rear legs rotate relative to each other with the link as the axis so that the lower part of the front leg and the lower part of the rear leg deviate from each other. [Prior Art Literature] [Patent Document]

[Patent Document 1] Patent No. 5905928

[Problem to be solved by the invention]

Here, in the case of the bathroom chair disclosed in Patent Document 1, when opening the legs of the folded bathroom chair, the user makes the foot rubber of the rear foot contact the ground and separates the foot rubber of the front foot from the ground. In this way, after the bathroom chair is tilted backward, push the upper end of the backrest downward. As a result, the connecting frame rotates downward, and the lower part of the front foot rotates upward. As a result, the lower part of the front leg deviates from the lower part of the rear leg, so that the legs of the bathroom chair can be opened. However, when opening the legs of the bathroom chair, it is necessary to temporarily release the rubber of the front legs from the ground once. Therefore, when opening the legs of the bathroom chair, it is troublesome for the user.

The present invention is made in view of this point, and an object of the present invention is to provide a bathroom chair in which the legs of the folded bathroom chair can be easily opened. [Technical means to solve the problem]

Hereinafter, "the front and rear feet are separated from the ground" means that the foot rubber, etc. installed under each of the front and rear feet is separated from the ground, and "the front and rear feet are in contact with the ground" means that they are installed under each of the front and rear feet. The foot rubber etc. are in contact with the ground. The inventors of the present invention, for example, aimed at a bathroom chair that is folded by making the lower part of the front leg and the lower part of the rear leg approach or separate, or that the leg of the chair is opened. Various studies have been carried out on the composition of the opening of the chair legs. In this regard, the inventors of the present case first found that, in the case of the bathroom chair disclosed in Patent Document 1, the foot rubbers of each of the front feet and the rear feet are in contact with the ground, and the foot rubbers play an anti-slip effect. It is not easy to make the lower part of the front foot deviate from the lower part of the rear foot. Then, the inventors of the present invention conducted further studies, and as a result, found that by providing an object that is easy to slide relative to the ground at the lower end of any one of the front legs and the rear legs, in the case of a folded bathroom chair, the front legs and the rear legs are in contact with the ground. In this state, it is easy to make the lower part of the front foot deviate from the lower part of the rear foot.

The bathroom chair of the present invention has a first leg, a second leg and a moving mechanism. The lower part of the second leg is disposed away from the lower part of the first leg. The moving mechanism makes the lower part of the first leg and the lower part of the second leg relatively close to or separated from each other. When the lower part of the first leg and the lower part of the second leg are close to each other, the position of the first leg and the second leg is the folded position, and the lower part of the first leg is separated from the lower part of the second leg When the position of the above-mentioned first leg and the above-mentioned second leg is set as the open position of the chair leg, a The anti-slip part that is in contact with the ground and whose sliding resistance against the ground is the first resistance. At the lower part of either one of the first leg and the second leg, there is provided a sliding part which is in contact with the ground in the folded position and whose sliding resistance against the ground is a second resistance which is smaller than the first resistance.

According to the bathroom chair of the present invention, the sliding portion and the anti-slip portion are in contact with the ground when in the folded position. At this time, by applying a force to the bathroom chair from above, the sliding part moves relative to the ground, and the lower part of the first leg and the lower part of the second leg are separated. As a result, the bathroom chair can be placed in a state where the legs are opened. Thus, in the present invention, the legs of the folded bathroom chair can be opened in a state where the sliding portion and the anti-slip portion are in contact with the ground. Thereby, it is not necessary to perform an action of lifting the front legs off the ground once as in the bathroom chair disclosed in Patent Document 1, so the legs of the bathroom chair in the folded state can be easily opened.

According to a preferred aspect of the present invention, the first leg is a front leg, and the second leg is a rear leg. The moving mechanism is configured by connecting the first leg and the second leg so as to be relatively rotatable.

According to the above aspect, when a force is applied to the bathroom chair from above, the sliding portion moves relative to the ground, and the front leg and the rear leg rotate mutually so that the lower part of the front leg and the lower part of the rear leg are away from each other. Thereby, the chair legs of the folded bathroom chair can be opened in a state where the sliding part and the anti-slip part are in contact with the ground.

According to a preferred aspect of the present invention, another anti-slip part is provided on the lower part of any one of the above-mentioned first leg and the above-mentioned second leg, and the other anti-slip part is not in contact with the folded position. The above-mentioned ground is in contact with the above-mentioned ground when the above-mentioned chair legs are in the open position, and the sliding resistance with the above-mentioned ground is a third resistance greater than the above-mentioned second resistance.

According to the above aspect, when in the folded position, the foot provided with the sliding part among the first and second feet contacts the ground through the sliding part, and the other non-slip part does not contact the ground. Thus, it is easy to open the legs of the folded bathroom chair. Also, when the chair legs are in the open position, the foot provided with the sliding part among the first and second legs contacts the ground through another anti-slip part. Thereby, when the user sits on the bathroom chair with the legs opened, the bathroom chair can hardly slip relative to the ground.

According to another preferred aspect of the present invention, the sliding part is configured not to contact the ground when the chair legs are in the open position.

According to the above aspect, when the chair legs are in the open position, the foot provided with the sliding part among the first and second legs contacts the ground through the other sliding part, and the sliding part is in a state of not contacting the ground. Thereby, when the user sits on the bathroom chair with the chair legs opened, the bathroom chair can be more difficult to slide relative to the ground.

According to another preferred aspect of the present invention, in the folded position, the other anti-slip part is disposed above the lower end of the sliding part.

According to the above aspect, when in the folded position, the foot provided with the sliding part among the first and second feet contacts the ground through the sliding part, and the other non-slip part does not contact the ground. Thereby, when the legs of the folded bathroom chair are opened, it is easy to make the sliding part contact the ground and make the lower part of the first leg and the lower part of the second leg far away from each other. Therefore, it is easy to open the legs of the bathroom chair.

According to another preferred aspect of the present invention, when the chair legs are in the open position, the sliding part is arranged above the lower end of the other anti-slip part.

According to the above aspect, when the chair legs are in the open position, the foot provided with the sliding part among the first and second legs contacts the ground through another anti-slip part, and the sliding part does not contact the ground. Thereby, when the user sits on the bathroom chair, the bathroom chair can hardly slip relative to the ground.

According to another preferred aspect of the present invention, the above-mentioned sliding part is provided as a roller rotatable relative to the bottom of any one of the above-mentioned first leg and the above-mentioned second leg.

According to the above-mentioned aspect, when in the folded position, the roller of the other one of the first foot and the second foot is in contact with the ground. Thereby, when the legs of the folded bathroom chair are opened, the rollers rotate relative to the ground, so that the lower part of the first leg and the lower part of the second leg are easily separated.

According to another preferred aspect of the present invention, the above-mentioned roller is provided in a detachable manner relative to the lower part of any one of the above-mentioned first leg and the above-mentioned second leg.

The bathroom chair is tied to the user in the bathroom, and dirt such as scale or hair tends to adhere to the rollers, for example. However, in the above-mentioned aspect, the roller can be easily removed from the bottom of either one of the first leg and the second leg. Thus, it is easy to remove the dirt adhering to the cap, and it is easy to clean the cap.

According to another preferred aspect of the present invention, the bathroom chair includes: a cap covering the lower part of the other one of the first leg and the second leg and forming an inlay recessed upward from the bottom surface. a joint space; and a roller cover, which is detachably embedded in the above-mentioned fitting space of the above-mentioned cap, and rotatably accommodates the above-mentioned roller in a manner that the lower end of the above-mentioned roller is exposed downward.

According to the above aspect, the roller can be attached to the cap through the roller cover. Also, the roller is rotatably accommodated in the roller cover. Thereby, by providing such a cap and a roller cover, the roller can be detachably arranged under any one of the first foot and the second foot, and the roller is arranged on the first foot and the second foot. The lower part of either foot can be rotated.

According to another preferred aspect of the present invention, a concave portion is formed on any one of the inner peripheral surface of the cap and the outer peripheral surface of the roller cover. A convex portion fitted to the concave portion is formed on the other one of the inner peripheral surface of the cap and the outer peripheral surface of the roller cover.

According to the above aspect, when the roller cover is fitted into the cap, the concave portion and the convex portion are fitted together, and the vertical movement of the roller cover is further restricted. Thereby, the roller cover is not easy to fall off from the cap.

According to another preferred aspect of the present invention, the above-mentioned cap is formed of an elastic body. A groove is formed in the lower part of the outer peripheral surface of the above-mentioned roller cover.

According to the above aspect, the front end of a dismounting tool such as a flathead screwdriver is inserted into the groove from between the cap and the roller cover. Then, the roller cover can be detached from the cap by operating the detachment tool with the front end of the detachment tool inserted into the groove. Thereby, the roller cover and the rollers accommodated in the roller cover can be easily disassembled from the cap by using the dismantling tool.

According to another preferred aspect of the present invention, at least the surface of the above-mentioned anti-slip portion that is in contact with the above-mentioned ground is formed of rubber.

Rubber is a material that is not easy to slide relative to the ground. Thus, by forming at least the surface of the anti-slip portion that contacts the ground with rubber, it is possible to manufacture the anti-slip portion that is less likely to slide relative to the ground.

According to another preferred aspect of the present invention, the above-mentioned sliding part is arranged at the lower part of the front foot. The above-mentioned anti-slip part is arranged on the lower part of the rear foot.

For example, a bathroom chair may be used in a state facing away from a wall and in a state close to the wall. In this case, the folded bathroom chair is placed with its back facing the wall and close to the wall, and a force is applied to the bathroom chair from above. At this time, the lower part of the front leg moves forward relative to the lower part of the rear leg, whereby the legs of the bathroom chair can be opened. Thereby, it is easy to open the chair legs of the folded bathroom chair facing the wall and close to the wall.

According to another preferred aspect of the present invention, the sliding part is provided on the front side of the lower part of the front foot.

According to the above-mentioned aspect, when the chair foot is in the open position, the front side of the lower end of the front foot is in the folded position, and is located at the lowermost end of the front foot. Thereby, by providing the sliding part on the front side of the lower part of the front foot, the sliding part is easy to contact with the ground in the folded position.

According to another preferred aspect of the present invention, the above-mentioned bathroom chair has a push-down portion, and the push-down portion is arranged behind the moving mechanism in a side view when the folded position and the chair legs are opened. The way is set directly or indirectly on the aforementioned front foot. The pressing portion is configured to cause the lower portion of the front leg to diverge from the lower portion of the rear leg by applying a downward force.

According to the above-mentioned aspect, when a relatively small force is applied from above to the pressing portion, the lower portion of the front foot tends to move forward in such a manner that it deviates from the lower portion of the rear foot due to the force. Thereby, the legs of the bathroom chair can be opened with relatively little force.

According to another preferred aspect of the present invention, the contact area of the sliding portion at the folded position to the ground is the first area. The contact area of the sliding portion at the open position of the chair legs to the ground is a second area smaller than the first area.

According to the above aspect, when the legs of the folded bathroom chair are opened, the contact area between the sliding part and the ground is large, and therefore, it is easy to move the front leg and the rear leg where the sliding part is provided. In addition, when the chair legs are in the open position, the contact area between the sliding part and the ground is small, so the bathroom chair can hardly slide relative to the ground. [Effect of Invention]

According to the present invention, there is provided a bathroom chair in which the legs of the folded bathroom chair can be easily opened.

Hereinafter, the bathroom chair of the present invention will be described with reference to the drawings. The embodiment described below is only one embodiment of the present invention, and of course it is not intended to limit the present invention.

＜Example of implementation＞ Fig. 1 is a perspective view of a bathroom chair 100 according to this embodiment. In the following description, front, back, left, right, up, and down mean front, back, left, right, up, and down as seen by the user sitting on the bathroom chair 100, respectively. Symbols F, Rr, L, R, U, and D in each drawing represent front, back, left, right, up, and down, respectively. However, these directions are only directions determined for convenience of description, and do not limit the aspect of the bathroom chair 100 at all.

Hereinafter, the bathroom chair 100 is simply referred to as the chair 100 . The chair 100 of this embodiment is foldable. The chair 100 is mainly used in the bathroom. The chair 100 is used, for example, when an elderly person or a caregiver needs to take a shower in a bathroom. However, the place where the chair 100 is used is not limited to the bathroom, and the users of the chair 100 are not limited to the elderly or those who need care.

FIG. 2 , FIG. 3 , and FIG. 4 are a front view, a rear view, and a top view of the chair 100 respectively. FIG. 5 and FIG. 6 are left side views showing the opened state of the legs of the chair 100 and the folded state of the chair 100, respectively. The chair 100 is used when the chair legs are opened, and is folded when not in use. 7 and 8 are perspective views of the chair 100 respectively.

As shown in FIG. 5 , the chair 100 is placed on the floor 5, for example. Wherein, the ground 5 also includes the bottom surface of the bathtub in addition to the floor of the bathroom. Moreover, the ground 5 can also be the ground of rooms or corridors of each floor of the building.

As shown in FIGS. 1 to 6 , the chair 100 includes a front leg 10 , a rear leg 20 , a rotation mechanism 30 , a seat portion 50 , a backrest 70 , an operating handle 80 , and an armrest 90 .

In the following description, unless otherwise specified, the positions of various parts and parts represent the position of the chair 100 with the legs of the chair 100 opened. As shown in Figure 2, a pair of tubular objects are arranged on the left and right sides of the front foot 10. Front foot 10 is an example of the first foot of the present invention. In this embodiment, the left front foot 10 and the right front foot 10 have bilaterally symmetrical shapes. As shown in FIG. 5 , the front foot 10 has a lower front foot 11 extending forward and downward, and an upper front foot 12 extending upward from the lower front foot 11 . Furthermore, in this embodiment, the lower part of the front foot 10 refers to the lower front foot 11 .

The front foot 10 is telescopic and adjustable in length. The illustration of the front foot 10 is omitted, and it includes the upper tube portion of the front foot, and the lower tube portion before the upper tube portion of the front foot is slidably inserted. The length of the front leg 10 can be adjusted by adjusting the insertion length of the upper tube portion of the front leg to the lower tube portion of the front leg.

In this embodiment, as shown in FIG. 3 , the left and right front legs 10 are connected to each other by a connecting frame 15 . The connecting frame 15 has a pair of left and right vertical frames 16 extending upward from the left and right front legs 10 above the front legs 12 as shown in FIG. Horizontal frame17. Furthermore, the left and right pair of front legs 10 and the connecting frame 15 can be separate bodies or integrated.

As shown in FIG. 5 , the lower part of the rear foot 20 is disposed away from the lower part of the front foot 10 (here, a position away from the rear). At least a part (lower part in this embodiment) of the rear foot 20 is arranged behind the front foot 10 in a side view. As shown in FIG. 3 , a pair of tubular members are arranged on the left and right sides of the rear foot 20 . The rear foot 20 is an example of the second foot of the present invention. In this embodiment, the left rear foot 20 and the right rear foot 20 have bilaterally symmetrical shapes. As shown in FIG. 5 , the rear foot 20 has a lower rear foot 21 that extends downward, and an upper rear foot 22 that extends upward from the lower rear foot 21 . Furthermore, in this embodiment, the lower part of the rear foot 20 refers to the lower rear foot 21 .

The rear foot 20 is the same as the front foot 10, and is scalable and adjustable in length. The illustration of the rear foot 20 is omitted, and it includes the upper tube portion of the rear foot and the lower tube portion after the upper tube portion of the rear foot is slidably inserted. The length of the rear foot 20 can be adjusted by adjusting the insertion length of the upper pipe portion of the rear foot to the lower pipe portion of the rear foot. In this embodiment, the height of the seat portion 50 can be adjusted by adjusting the lengths of the left and right front legs 10 and the lengths of the left and right rear legs 20 .

The front foot 10 and the rear foot 20 are rotatably connected to each other via a rotation mechanism 30 . The rotating mechanism 30 is an example of the moving mechanism of the present invention, and it makes the lower part of the front foot 10 and the lower part of the rear foot 20 relatively close to or separate from each other. Here, the rotation mechanism 30 is a mechanism that connects the front leg 10 and the rear leg 20 to rotate the front leg 10 and the rear leg 20 mutually. Furthermore, the configuration of the rotation mechanism 30 is not particularly limited. In this embodiment, the rotation mechanism 30 has a connection shaft 31 . In this embodiment, as shown in FIG. 2 , a pair of front legs 10 and a pair of rear legs 20 are respectively provided on the left and right, and therefore, a pair of connecting shafts 31 is also provided on the left and right. The connecting shaft 31 is a member extending in the left-right direction, and as shown in FIG. 5 , connects the front leg 12 on the front leg 10 and the rear leg 22 on the rear leg 20 . The front foot 10 can rotate relative to the rear foot 20 by connecting the shaft 31 as an axis, and the rear foot 20 can rotate relative to the front foot 10 by connecting the shaft 31 as an axis. In this embodiment, the lower part of the front foot 11 under the front foot 10 (hereinafter also referred to as the lower part of the front foot 10) and the lower part of the rear foot 21 under the rear foot 20 (hereinafter also referred to as the lower part of the rear foot 20) are close to each other. The front foot 10 and the rear foot 20 rotate relatively, as shown in FIG. 6 , the chair 100 can be folded. On the contrary, the front foot 10 and the rear foot 20 are relatively rotated in such a way that the lower part of the front foot 10 and the lower part of the rear foot 20 deviate from each other, as shown in FIG. 5 , the legs of the chair 100 can be opened.

In this embodiment, when the lower part of the front foot 10 and the lower part of the rear foot 20 are approached as shown in FIG. The position of 10 and rear foot 20 is called folded position P1. The folding position P1 is the position where the chair 100 is in a folded state. Also, when the lower part of the front foot 10 and the lower part of the rear foot 20 deviate from each other as shown in FIG. The position is called the chair leg open position P2. The chair leg open position P2 is the position where the chair 100 is in a state where the chair leg is opened.

As shown in FIG. 5 and FIG. 6 , at the folded position P1 and the open position P2 of the chair legs, the front leg 10 crosses the rear leg 20 . As shown in FIG. 6 , at the folded position P1, the axis A11 of the lower front leg 11 of the lower front leg 10 is inclined upward from the vertical direction forward, and the axis A12 of the upper front leg 12 is extended from the rear of the axis A11. However, in the folded position P1, the axis A11 of the lower front leg 11 can also extend in the vertical direction. In the folded position P1, the axis A21 of the rear foot 21 under the rear foot 20 is inclined upward from the vertical direction, and the axis A22 of the upper rear foot 22 is extended forward from the axis A21. A part of the axis A22 is bent. Furthermore, in the folded position P1, the axis A21 of the lower rear leg 21 can also extend in the vertical direction.

As shown in FIG. 5 , when the chair legs are in the open position P2 , the axis A11 of the lower front leg 11 extends forward and downward, and the axis A12 of the upper front leg 12 extends upward from the rear of the axis A11 . In addition, when the chair legs are in the open position P2, the axis A21 of the lower rear leg 21 extends downward, and the axis A22 of the upper rear leg 22 extends forward from the axis A21. For example, when the distance between the rear end of the front foot 10 and the front end of the rear foot 20 is set as the first distance D1 (refer to FIG. The distance between the lower front end of the rear foot 20 is a second distance D2 (refer to FIG. 5 ) which is longer than the above-mentioned first distance D1. By relatively rotating the front leg 10 and the rear leg 20, the positions of the front leg 10 and the rear leg 20 can be changed from the folded position P1 to the leg open position P2, or from the leg open position P2 to the folded position P1.

In this embodiment, as shown in FIG. 5 , a front side anti-slip cap 33 as an example of another anti-slip part of the present invention and a roller 35 as an example of the sliding part of the present invention are provided on the lower part of the front foot 10. . At the lower end of the rear foot 20, a rear side anti-slip cap 37 is provided as an example of the anti-slip member of the present invention.

Fig. 9 shows the left side view of the side anti-skid cap 33 and the roller 35 before the chair foot opening position P2. Fig. 10 shows the left side view of the side anti-slip cap 33 and the roller 35 before the folded position P1. As shown in FIG. 9 , the front anti-slip cap 33 is a component that covers the lower part of the front foot 11 under the front foot 10 . The front side anti-skid cap 33 can be separate from the front foot 10 in this embodiment, and can also be integrally formed with the front foot 10 in part or in whole. Here, the front anti-slip cap 33 is configured so as not to contact the ground 5 at the folded position P1 as shown in FIG. 10 , and to contact the ground 5 at the opened position P2 as shown in FIG. 9 . Wherein, the surface of the side anti-slip cap 33 before contacting the ground 5 when the chair legs are in the open position P2 is set as the contact surface 33a. As shown in FIG. 10 , in the folded position P1 , the contact surface 33 a of the front anti-slip cap 33 extends upwards in a state where it is not in contact with the ground 5 . In other words, at the folded position P1, the front end to the rear end of the contact surface 33a is gradually away from the ground 5 . At this time, the front end of the contact surface 33a is not in contact with the ground 5 .

The contact area between the front anti-slip cap 33 and the ground 5 is the first front anti-slip area when the folded position P1 in FIG. Furthermore, the first front anti-skid area includes "0". Wherein, the first front anti-slip area is smaller than the second front anti-slip area.

The roller 35 is used to help the chair pin of the front pin 10 and the rear pin 20 to open when the chair pin of the chair 100 is opened. The roller 35 is rotatably provided on the front foot 10 . The roller 35 is disposed on the front side of the lower part of the front foot 10 . Here, on the front side of the lower portion of the front foot, a roller bracket 36 is provided via a front anti-skid cap 33 . This roller bracket 36 can be another body with the front side anti-skid cap 33, also can be one. The rotating shaft 36a extended in the left-right direction is rotatably attached to the bracket 36 for rollers. The roller 35 is attached to the rotating shaft 36a, and rotates together with the rotating shaft 36a. In this way, the roller 35 is indirectly provided on the front foot 11 under the front foot 10 via the rotation shaft 36 a, the roller bracket 36 and the front anti-skid cap 33 . However, the roller 35 may also be rotatably disposed directly under the front foot 10 .

As shown in FIG. 10 , the roller 35 is configured to be in contact with the floor 5 at the folded position P1. In this embodiment, as shown in FIG. 9 , the roller 35 is configured so as not to contact the ground 5 at the leg open position P2 , however, it may contact the ground 5 at the leg open position P2 . As shown in FIG. 10 , in the folded position P1 , the front anti-slip cap 33 is disposed above the lower end of the roller 35 . The lower end of the roller 35 is disposed below the contact surface 33a of the front anti-skid cap 33 . Thus, at the folded position P1, the contact surface 33a is in a state separated from the ground surface 5 . As shown in FIG. 9 , when the chair legs are in the open position P2 , the roller 35 is disposed above the lower end of the front anti-skid cap 33 (the contact surface 33 a here). Therefore, when the chair leg is opened at the position P2, the roller 35 is in a state of being separated from the ground 5 . Here, the roller 35 is in contact with the floor 5 during the position change from the folded position P1 to the leg-opened position P2.

The contact area of the roller 35 with the ground 5 is the contact area of the first roller when the folded position P1 of FIG. 10 is in the folded position P1 of FIG. Furthermore, the contact area of the second roller includes "0". Wherein, the contact area of the second roller is smaller than the contact area of the first roller. Furthermore, in this embodiment, the first roller contact area is an example of the first area of the present invention, and the second roller contact area is an example of the second area of the present invention.

As shown in FIG. 5 , the rear anti-slip cap 37 is a component that covers the lower part of the rear foot 21 under the rear foot 20 . The rear side anti-slip cap 37 and the rear foot 20 are separate bodies, and are installed on the lower rear foot 21 . However, a part or all of the rear anti-slip cap 37 can also be integrally formed with the rear foot 20 . As shown in FIGS. 5 and 6 , the rear anti-slip cap 37 is in contact with the ground 5 at the folded position P1 and the opened position P2 of the chair legs. Here, at least a part of the rear anti-slip cap 37 is in contact with the ground 5 during the position change from the folded position P1 to the leg-opened position P2.

In this embodiment, as shown in FIG. 5 , when the chair legs are in the open position P2 , the entire bottom surface of the rear anti-slip cap 37 is in contact with the ground 5 . Wherein, the surface of the side anti-slip cap 37 after contacting the ground 5 when the chair legs are opened at the position P2 is called the contact surface 37a. As shown in FIG. 6 , at the folded position P1 , the contact surface 37 a of the rear anti-slip cap 37 extends forward and upward. In other words, at the folded position P1, the contact surface 37a is gradually away from the ground 5 from the rear end to the front end. At the folded position P1, at least the rear end of the contact surface 37a is in contact with the ground 5 .

The contact area between the rear anti-slip cap 37 and the ground 5 is the first rear anti-slip area when the folded position P1 in FIG. Wherein, the first rear anti-slip area is smaller than the second rear anti-slip area.

In this embodiment, the sliding resistance of the rear anti-slip cap 37 relative to the ground 5 is the first resistance. The sliding resistance of the roller 35 with respect to the ground 5 is the second resistance. The sliding resistance of the front anti-slip cap 33 relative to the ground 5 is the third resistance. Wherein, "sliding resistance" refers to the resistance generated between the chair 100 and the ground 5 when a downward force is applied to the chair 100 . "Sliding resistance" includes not only the resistance generated when the component slides relative to the ground 5, but also the resistance generated when the component rotates relative to the ground 5. In this embodiment, the second resistance of the roller 35 is smaller than the first resistance of the rear anti-slip cap 37 and smaller than the third resistance of the front anti-slip cap 33 . Also, the first resistance and the third resistance are the same. Wherein, the first resistance is the same as the third resistance, which means that a small error is included. Furthermore, the first resistance can be greater than or smaller than the third resistance.

The contact surface 33a of the front anti-slip cap 33 and the contact surface 37a of the rear anti-slip cap 37 are formed of rubber. In this embodiment, the entire front anti-slip cap 33 and the entire rear anti-slip cap 37 are formed of rubber. However, the material forming the front anti-slip cap 33 and the rear anti-slip cap 37 is not limited to rubber. The parts of the front anti-slip cap 33 other than the contact surface 33a and the parts of the rear anti-slip cap 37 other than the contact surface 37a may also be formed of materials other than rubber. For example, the portion of the roller 35 that contacts the ground 5 is made of polypropylene. However, the portion of the roller 35 that is not in contact with the ground 5 may be formed of polypropylene, or may be formed of a material different from polypropylene, such as a material whose sliding resistance is smaller than that of the front anti-skid cap 33 .

In this embodiment, as shown in FIG. 8 , between the left front foot 10 and the right front foot 10 , a first support rod 41 and a first connecting rod 44 are erected. Both the first support rod 41 and the first connecting rod 44 extend in the left-right direction, and connect the left front leg 10 and the right front leg 10 . The first supporting rod 41 is disposed on the rearwardly upward side of the first connecting rod 44 and configured to support the seat portion 50 when the legs of the chair 100 are opened. The first support rod 41 is connected to the front foot 12 on the front foot 10 . The first connecting rod 44 can be connected with the front foot 11 under the front foot 10 , and can also be connected with the upper front foot 12 .

As shown in FIG. 7 , between the left rear leg 20 and the right rear leg 20 , a second support rod 42 and a second connecting rod 45 are erected. Both the second support rod 42 and the second connecting rod 45 extend in the left-right direction, and connect the left rear leg 20 and the right rear leg 20 . The second support rod 42 is disposed above the second connecting rod 45 and is configured to support the seat portion 50 when the legs of the chair 100 are opened. The second support rod 42 is connected to the rear foot 22 on the rear foot 20 . The second connecting rod 45 can be connected with the rear foot 21 under the rear foot 20 , and can also be connected with the upper rear foot 22 .

As shown in FIG. 8 , a pair of left and right rear brackets 61 are provided on the back of the seat portion 50 . The second support rod 42 is rotatably supported by the rear bracket 61 . Accordingly, the seat portion 50 is configured to be rotatable with respect to the rear leg 20 via the rear bracket 61 and the second support rod 42 .

On the back side of the seat portion 50, in addition to the rear bracket 61, a pair of left and right front brackets 62 are provided. The front bracket 62 is arranged in front of the rear bracket 61 , and is arranged on the central side in the left-right direction relative to the rear bracket 61 . A connecting shaft 63 extending in the left-right direction is attached to the front bracket 62 .

In this embodiment, the connecting shaft 63 attached to the front frame 62 and the first connecting rod 44 are connected by the connecting rod 66 . A pair of connecting shafts 63 is provided on the left and right, and therefore, a pair of connecting rods 66 is also provided on the left and right. The connecting rod 66 is when the chair 100 with the chair leg opened is folded and when the chair leg 100 of the folded chair 100 is opened, the seat portion 50 is rotated relative to the rear leg 20 and the front leg 10 and the rear leg are connected around the connecting shaft 31 of the rotation mechanism 30. 20 is a member of relative rotation linkage.

In this embodiment, as shown in FIG. 7 , a pair of left and right supported portions 64 are provided on the back surface of the seat portion 50 . The supported portion 64 is arranged behind the rear frame 61 and the front frame 62 , and protrudes from the back of the seat portion 50 . The supported portion 64 is configured to contact and be supported by the first support rod 41 when the legs of the chair 100 are opened. Accordingly, when the legs of the chair 100 are opened, the seat portion 50 is supported by the front leg 10 via the supported portion 64 and the first support rod 41 .

Also, when the chair legs are in the open position P2 of FIG. 5 , a portion 22a of the rear legs 22 above the rear legs 20 leaves the seat portion 50 downward. However, this part is called the separation part 22a. On the exit portion 22a, a reinforcing member 65 is provided. As shown in FIG. 7 , the reinforcing member 65 is configured to contact the first support rod 41 and support the first support rod 41 when the legs of the chair 100 are opened. Thus, when the legs of the chair 100 are opened, the first support bar 41 is supported by the rear legs 20 via the reinforcing member 65 .

As shown in FIG. 4 , the seat portion 50 has a seat surface 51 formed on the upper surface on which a user sits. The material of the seat portion 50 is not particularly limited, and in the present embodiment, the seat portion 50 is a synthetic resin blow-molded product. At the rear end portion of the seat portion 50, a recessed portion 50a recessed forward is formed. The recessed part 50a is formed in the center of the seat part 50 in the left-right direction. Inside the concave portion 50a, a handle 56 is arranged. The handle 56 is fixed to the seat 50 .

The backrest 70 is attached to the horizontal frame 17 of the connection frame 15 . In this embodiment, the backrest 70 and the horizontal frame 17 are separate bodies, however, the backrest 70 and the horizontal frame 17 may also be integrally formed. As shown in FIG. 2 , a hole 71 is formed on the backrest 70 . The user grasps the backrest 70 by inserting fingers into the hole 71 , thereby lifting the chair 100 with one hand and moving the chair 100 with one hand. Here, at the lower end of the backrest 70, a concave portion 72 that is depressed upward is formed. In addition, the material of the backrest 70 is not specifically limited, In this embodiment, the backrest 70 is a synthetic resin blow molded product. In addition, in this embodiment, the back part 70a of the backrest 70 is an example of the pressing part of this invention. As shown in FIG. 6 , in the folded position P1 , the rear portion 70 a of the backrest 70 is disposed behind the rotation mechanism 30 in a side view.

As shown in FIG. 5 , the operating handle 80 is for the user to apply force when opening the legs of the folded chair 100 or when folding the chair 100 with the legs opened. For example, by applying a vertical downward force to the operating handle 80, the legs of the folded chair 100 can be opened. In this embodiment, the operating handle 80 is provided behind the backrest 70 . Here, as shown in FIG. 3 , a bracket 81 is provided at the center of the horizontal frame 17 of the connection frame 15 . A shaft 82 (see FIG. 5 ) extending in the left-right direction is provided on the bracket 81 . The front end of the operating handle 80 is provided on the shaft 82 and rotates together with the shaft 82 . Here, the operation handle 80 can be rotated around the shaft 82 with its front end as the center, and the operation handle 80 can be lifted or pushed down. As shown in FIG. 6 , in the folded position P1 , the operating handle 80 is disposed behind the rotating mechanism 30 in a side view.

In this embodiment, a pair of left and right pins 84 (see FIG. 3 ) are connected to the operation handle 80 via wires (not shown). As shown in FIG. 3 , a pair of left and right pins 84 can protrude toward the center in the left and right direction from the receiving member 48 provided at both ends of the first support rod 41 between the front legs 12 on the left and right pair of front legs 10 . Hooks 49 are respectively provided on a pair of left and right supported portions 64 provided on the rear surface of the seat portion 50 on the center side in the left-right direction relative to the housing member 48 . The pin 84 engages with the hook 49 when protruding from the housing member 48 . Here, when the operating handle 80 is located at the downward position, the pin 84 is engaged with the hook 49 , and when the operating handle 80 is lifted upward, the pin 84 comes out from the hook 49 . Springs are provided inside the pair of left and right housing members 48 , and the illustration is omitted. The spring is constituted in the following manner: in order to maintain the folded state at the folding position P1, the pin 84 is energized, and in order to maintain the open state of the chair leg at the chair leg open position P2, the pin 84 is energized to make the pin 84 and the chair leg open. The hook 49 engages. Thereby, when the chair 100 is in the folded state, unless the operation handle 80 is operated, the state of the folded position P1 is maintained. On the other hand, in the state where the legs of the chair 100 are opened, as long as the operation handle 80 is not operated, the state of the leg-open position P2 is maintained.

As shown in FIG. 1 , the armrests 90 are respectively attached to the pair of left and right vertical frames 16 of the connection frame 15 . In this embodiment, as shown in FIG. 4 , the bracket 18 protruding forward is provided on the vertical frame 16 . A horizontal shaft 19 extending in the left-right direction is attached to the bracket 18 . The armrest 90 is rotatably mounted on the horizontal shaft 19 . The armrest 90 is rotatably attached to the vertical frame 16 via the horizontal shaft 19 and the bracket 18 . Here, the armrest 90 is rotatable between a horizontal state in which the front end is located forward, and a vertical state in which the front end is located upward.

The configuration of the chair 100 has been described above. Next, an example of the opening operation and the folding operation of the legs of the chair 100 will be described.

The opening operation and folding operation of the chair legs of the chair 100 can be performed by one hand. As shown in FIG. 5 , when folding the chair 100 with its legs opened, firstly, the armrest 90 is raised to change the armrest 90 from a horizontal state to a vertical state. Next, grasp the backrest 70 and the operating handle 80 with your hands. At this time, the operation handle 80 is rotated upward, and the pin 84 (see FIG. 3 ) comes out from the hook 49 (see FIG. 3 ). Then, when the backrest 70 is lifted, the seat 50 rotates around the first support rod 41, and as shown in FIG.

In this embodiment, as shown in FIG. 8 , the front portion of the seat portion 50 is connected to the first connecting rod 44 via the connecting rod 66 . Therefore, when the front portion of the seat portion 50 moves downward, the front leg 10 moves from the connecting rod 66 to the first connecting rod 44 . The first connecting rod 44 is subjected to a downward force. As a result, as shown in FIG. 6 , the front foot 10 rotates around the connecting shaft 31 of the rotation mechanism 30 so that the front foot 10 and the rear foot 20 approach each other. When the chair 100 is lifted, its own weight acts on the front leg 10 and the rear leg 20 . The front foot 10 and the rear foot 20 are also relatively rotated around the connecting shaft 31 by these dead weights. Furthermore, when the front foot 10 and the rear foot 20 rotate relative to each other, while the contact surface 33a of the front side anti-slip cap 33 is away from the ground 5, the roller 35 which is not in contact with the ground 5 is in contact with the ground 5. In the case of the contact surface 37a of the rear anti-slip cap 37, when the front end leaves the ground 5 and the roller 35 contacts the ground 5, only the rear end of the contact surface 37a is in contact with the ground 5. Here, the front foot 10 is easy to approach to the rear foot 20 with the rotation of the roller 35 . In this way, when the front foot 10 and the rear foot 20 are relatively rotated, as shown in FIG. 6 , the chair 100 is folded, and the chair 100 is maintained at the folded position P1.

When the legs of the folded chair 100 are opened, the user can open the legs of the chair 100 without making the front legs 10 and the rear legs 20 leave the ground 5 through other components. Here, first, the user puts a hand on the rear portion 70a of the backrest 70, and applies a vertical downward force to the rear portion 70a of the backrest 70. FIG. At this time, an operation opposite to the above-mentioned folding operation is performed, and the front leg 10 and the rear leg 20 are relatively rotated around the connecting shaft 31 . As a result, the lower part of the front foot 10 and the lower part of the rear foot 20 gradually deviate from each other. Wherein, at the folded position P1 shown in FIG. 6 , the rear end of the contact surface 37 a of the rear anti-slip cap 37 is in contact with the ground 5 . Then, as shown in FIG. 10 , at the folded position P1 , the contact surface 33 a of the front anti-skid cap 33 is away from the ground 5 , and the roller 35 is in contact with the ground 5 . During the movement from the folded position P1 to the open position P2 of the chair legs, the rear anti-slip cap 37 is in contact with the ground 5 , so the position of the lower end of the rear foot 20 relative to the ground 5 is substantially unchanged. On the other hand, during the movement from the folded position P1 to the open position P2 of the chair legs, the front anti-skid cap 33 is not in contact with the ground 5 and the roller 35 is in contact with the ground 5 . Thereby, the lower part of the front leg 10 moves forward along with the rotation of the roller 35, and along with the rotation of the roller 35, the opening action of the chair leg is accelerated. By performing such an operation, as shown in FIG. 5 , the legs of the chair 100 are opened, and the chair assumes a posture such as the position P2 where the legs are opened. Furthermore, as shown in FIG. 9 , when the chair foot is in the open position P2, the contact surface 33a of the front anti-skid cap 33 is in contact with the ground 5, and the roller 35 is away from the ground 5. Therefore, the front foot 10 is not easy to slide relative to the ground 5 .

As mentioned above, in this embodiment, as shown in FIG. 6 , at the folded position P1 , the rollers 35 and the rear anti-skid cap 37 are in contact with the ground 5 . At this time, by applying a force to the chair 100 from above, the roller 35 moves relative to the ground 5, and the front foot 10 and the rear foot 20 rotate mutually so that the lower part of the front foot 10 and the lower part of the rear foot 20 are away from each other. As a result, as shown in FIG. 5 , the chair 100 can be brought into a state in which the legs are opened. In this way, in this embodiment, the chair legs of the folded chair 100 can be opened in a state where the rollers 35 and the rear anti-skid cap 37 are in contact with the ground 5 . Thereby, it is not necessary to lift the front legs off the ground once like the bathroom chair disclosed in Patent Document 1, so the legs of the chair 100 in the folded state can be easily opened.

In this embodiment, the roller 35 is provided at the lower part of the front foot 10 . For example, the chair 100 may be used in a state facing away from a wall and in a state close to the wall. In this case, the folded chair 100 is placed with its back facing the wall and close to the wall, and a force is applied to the chair 100 from above. At this time, the lower part of the front leg 10 moves forward relative to the lower part of the rear leg 20, whereby the legs of the chair 100 can be opened. Thereby, it is easy to open the chair legs of the folded chair 100 in the state of facing away from the wall and in the state of being close to the wall.

In this embodiment, the roller 35 is provided on the front side of the lower part of the front foot 10 . When the chair foot is in the open position P2, the front side of the lower end of the front leg 10 is located at the folded position P1, and is located at the lowermost end of the front leg 10. Thereby, by providing the roller 35 on the front side of the lower part of the front foot 10, the roller 35 is easy to contact with the ground 5 at the folded position P1.

In this embodiment, as shown in FIG. 10 , at the folded position P1 , the front anti-skid cap 33 is arranged above the lower end of the roller 35 . Thus, at the folded position P1 , the front foot 10 is in contact with the ground 5 via the roller 35 , and the front anti-skid cap 33 is not in contact with the ground 5 . Thus, it is easy to open the legs of the folded chair 100 . Also, as shown in FIG. 9 , when the chair legs are in the open position P2 , the roller 35 is arranged above the lower end of the front anti-skid cap 33 . Thereby, when the chair legs are in the open position P2, the front leg 10 is in contact with the ground 5 through the front anti-skid cap 33, and the roller 35 is not in contact with the ground 5. Thereby, when the user sits on the chair 100 with the legs opened, the chair 100 is less likely to slide relative to the ground 5 .

In this embodiment, as shown in FIG. 5 and FIG. 6 , the rear portion 70 a of the backrest 70 is disposed on the rotation mechanism 30 (specifically, the connecting shaft) in a side view when the backrest 70 is in the folded position P1 and the chair leg open position P2. 31) The rear part is provided on the front foot 10 via the connecting frame 15 . Thus, even when a relatively small force (for example, about 20 N to 80 N) is applied from above to the rear portion 70 a of the backrest 70 , the front foot 10 is easily rotated forward by the force relative to the rear foot 20 . The lower portion of the foot 10 moves forward relative to the lower portion of the rear foot 20 . Thereby, the legs of the chair 100 can be opened with a relatively small force.

In this embodiment, the contact area of the roller 35 at the folded position P1 to the ground 5 is the contact area of the first roller. The contact area of the roller 35 at the chair foot open position P2 to the ground 5 is the contact area of the second roller which is smaller than the contact area of the first roller. Thereby, when the chair legs of the folded chair 100 are opened, since the contact area between the rollers 35 and the ground 5 is relatively large, the front legs 10 are easy to move forward. Moreover, when the chair legs are at the open position P2, since the contact area between the rollers 35 and the ground 5 is small (0 here), the chair 100 is not easy to slide relative to the ground 5 .

In this embodiment, as shown in FIG. 10 , the roller 35 is provided so as to be rotatable relative to the lower part of the front foot 10 . Thereby, when the chair legs of the folded chair 100 are opened, it is easy to make the roller 35 rotate relative to the ground 5 and at the same time make the lower part of the front leg 10 and the lower part of the rear leg 20 deviate from each other.

In this embodiment, the contact surface 33a of the front anti-slip cap 33 and the contact surface 37a of the rear anti-slip cap 37 are formed of rubber. Rubber is a material that is not easy to slide relative to the ground 5 . Thus, by forming the contact surfaces 33a, 37a with rubber, the front side non-slip cap 33 and the rear side non-slip cap 37 can be fabricated so as not to slip easily with respect to the floor surface 5 .

The chair 100 of this embodiment has been described above. Next, a bathroom chair of another embodiment will be described. In the following description, the same reference numerals are used for the same configurations as those already described, and descriptions thereof are appropriately omitted.

<Another embodiment> In the above embodiment, the roller 35 is used as an example of the sliding part of the present invention. When the legs of the chair 100 are opened, the front leg 10 is easily moved relative to the ground 5 by the rotation of the roller 35 . However, the sliding part of the present invention is not limited to the roller 35 . Fig. 11 is a left side view showing the side anti-slip cap 133 before the open position P2 of the chair legs in another embodiment. FIG. 12 shows a left side view of the front side anti-slip cap 133 at the folded position P1.

For example, as shown in Figure 11, the front foot 11 under the front foot 10 can be provided with a front side anti-slip cap 133, and the front side anti-slip cap 133 is provided with an anti-slip surface 133a and a sliding surface as an example of the sliding part of the present invention. 135. In a side view, the sliding surface 135 is disposed in front of the anti-slip surface 133a. As shown in FIG. 12 , at the folded position P1 , the anti-slip surface 133 a does not contact the ground 5 , and the sliding surface 135 contacts the ground 5 . Here, at the folding position P1, the sliding surface 135 is a surface extending in the horizontal direction, and the anti-slip surface 133a extends upward from the sliding surface 135 .

As shown in FIG. 11 , when the chair legs are in the open position P2 , the anti-skid surface 133 a is in contact with the ground 5 , and the sliding surface 135 is not in contact with the ground 5 . Here, in the open position P2 of the chair legs, the anti-slip surface 133a extends in the horizontal direction, and the sliding surface 135 extends forward and upward from the anti-slip surface 133a.

In this embodiment, the sliding resistance of the anti-slip surface 133a relative to the ground 5 is different from the sliding resistance of the sliding surface 135 relative to the ground 5 . For example, the sliding resistance of the rear anti-slip cap 37 relative to the ground 5 (refer to FIG. 5 ) is set as the first resistance, the sliding resistance of the sliding surface 135 relative to the ground 5 is set as the second resistance, and the anti-slip surface 133a The sliding resistance on the ground 5 is set as the third resistance. At this time, the second resistance of the sliding surface 135 is smaller than the first resistance of the rear anti-slip cap 37, and smaller than the third resistance of the anti-slip surface 133a. Also, although the first resistance is the same as the third resistance, it may be larger or smaller than the third resistance. In order to achieve this relationship of sliding resistance, the material forming the sliding surface 135 and the material forming the anti-slip surface 133a may be different. In addition, in order to achieve such a relationship of sliding resistance, surface processing may be performed on the anti-slip surface 133a and the sliding surface 135 .

Also in this embodiment, the same effect as that of the first embodiment can be obtained, and the chair legs of the folded chair can be easily opened.

Furthermore, in the above-mentioned embodiment, when the chair legs are opened at the position P2, the rollers 35 are separated from the ground 5 . However, when the chair legs are in the open position P2, the roller 35 and the contact surface 33a of the front anti-skid cap 33 can also be in contact with the ground 5 together.

In the above embodiment, the front anti-slip cap 33 can be omitted. In this case, the roller 35 can be rotatably installed on the lower end of the front foot 11 under the front foot 10 . In this case, the roller 35 is in a state of being in contact with the floor 5 at both the folded position P1 and the chair leg open position P2. Furthermore, when the front anti-slip cap 33 is omitted, the sliding resistance between the contact surface 37a of the rear anti-slip cap 37 and the ground 5 is preferably such that when the user sits on the chair 100, the chair 100 is opposite to each other. It is not easy to slide on the ground 5.

In the above embodiment, the roller 35 is provided on the front side of the lower part of the front foot 10 . However, the position of the roller 35 relative to the front foot 10 is not particularly limited. For example, the roller 35 can also be arranged on the rear side of the lower part of the front foot 10 . Also, the roller 35 can be arranged on the left side of the lower part of the front foot 10, or can be arranged on the right side of the lower part of the front foot 10.

In the above embodiment, the roller 35 as an example of the sliding part of the present invention is provided on the front leg 10 , however, it may also be provided on the rear leg 20 . In this case, the roller 35 can be arranged on the rear side of the rear anti-skid cap 37 . However, the roller 35 can also be arranged on the front side of the rear side anti-skid cap 37, and can also be arranged on the left side or the right side. In this case, at the folded position P1, the contact surface 37a of the rear anti-slip cap 37 is not in contact with the ground 5, and the roller 35 is in contact with the ground 5. At the folded position P1, the contact surface 37a is located above the lower end of the roller 35 . In this case, when the chair legs are in the open position P2, the rollers 35 may or may not be in contact with the ground 5 .

In the above-mentioned embodiment, the moving mechanism of the present invention is the rotating mechanism 30 , and the front leg 10 and the rear leg 20 are relatively rotated by the rotating mechanism 30 , thereby opening the legs of the chair 100 or folding the chair 100 . However, the moving mechanism of the present invention is configured such that the lower portion of the front foot 10 and the lower portion of the rear foot 20 relatively approach or depart from each other by relatively sliding the lower portion of the front foot 10 relative to the lower portion of the rear foot 20 .

In the above embodiment, the legs of the chair 100 are opened or the chair 100 is folded by relatively rotating the front legs 10 and the rear legs 20 . However, it is also possible to open the legs of the chair 100 by bringing the lower portion of the left foot (i.e., the left front foot 10 and the left rear foot 20) closer to or away from the lower portion of the right foot (i.e., the right front foot 10 and the right rear foot 20 ). , or fold the chair 100. At this time, the movement mechanism (the rotation mechanism 30 in the above-mentioned embodiment) of the present invention is configured so that the lower part of the left foot and the lower part of the right foot are relatively close to or separated from each other. In this case, for example, the right foot corresponds to the first foot of the present invention, and the left foot corresponds to the second foot of the present invention. In this case, the moving mechanism can connect the left foot and the right foot in a rotatable manner, and can also be configured so that the lower parts of the left and right feet are relatively close to each other by sliding the lower part of the right foot relative to the lower part of the left foot. or diverge. Also, in this case, the roller 35 may be provided on one of the pair of left and right front feet 10 (for example, the right front foot 10 ) and one of the pair of left and right rear feet 20 (for example, the right rear foot 20 ).

Even in this case, when the legs of the folded chair 100 are opened, the user can open the legs of the chair 100 without leaving the left and right feet off the ground 5 through other components. When the chair leg of the folded chair 100 is opened, the lower part of the left foot and the lower part of the right foot gradually deviate from each other. At this time, since the roller 35 is in contact with the ground 5, during the movement from the folded position P1 to the open position P2 of the chair leg, the lower part of the right foot moves to the right with the rotation of the roller 35. With the rotation of the roller 35, The opening action of the chair legs is facilitated. By performing this action, the legs of the chair 100 can be opened. Furthermore, in this case, the roller 35 can be arranged on the other of the left and right pair of front feet 10 (for example, the left front foot 10 ), and the other of the left and right pair of rear feet 20 (for example, the left rear foot 20 ).

In the above-mentioned embodiment, the rear part 70a of the backrest 70 is an example of the lower pressure part of this invention. However, the pressing portion is not limited to the back portion 70 a of the backrest 70 , it is directly or indirectly disposed on the front foot 10 , and can be a position that rotates in conjunction with the front foot 10 . For example, the lower pressing portion of the present invention can be the operating handle 80 , can be the connecting frame 15 , can be the rear portion of the seat portion 50 , and can also be the rear portion of the armrest 90 .

In the above-mentioned embodiment, the operating handle 80 is installed behind the backrest 70, however, the installation location is not particularly limited. For example, the operating handle 80 can also be disposed on the back of the seat portion 50 .

In the above embodiment, the roller 35 is attached to the lower part of the front leg 10 via the rotating shaft 36 a, the roller bracket 36 and the front anti-skid cap 33 . The roller 35 cannot be easily removed from the lower part of the front foot 10 and the front anti-skid cap 33 . However, the roller 35 may also be provided in a detachable, that is, detachable, manner relative to the lower part of the front foot 10 .

Fig. 13 and Fig. 14 are respectively a perspective view and a front sectional view of a cap 233, a roller cover 240 and a roller 235 in another embodiment. Fig. 13 is the figure obtained by observing the cap 233, the roller cover 240 and the roller 235 from the front left obliquely. FIG. 15 is a perspective view of the cap 233 . 16 and 17 are a side view and an exploded perspective view of the roller cover 240, respectively. As shown in FIG. 13 , the roller 235 is detachably provided with respect to the lower part of the front foot 10 via the roller cover 240 and the cap 233 .

Here, the cap 233 covers the lower part of the front foot 10 from below. As shown in FIG. 15 , a fitting space 234 recessed upward from the bottom surface is formed in the cap 233 . In this embodiment, the bottom surface of the cap 233 is open, and a fitting space 234 is formed inside the cap 233 . The fitting space 234 is connected with the opening of the bottom surface of the cap 233 . The cap 233 is formed of elastic body. Elastomeric systems refer, for example, to rubber. The cap 233 is made of rubber, for example.

As shown in FIG. 14 , the roller cover 240 is detachably embedded in the fitting space 234 of the cap 233 from below. The roller cover 240 has a shape conforming to the fitting space 234 . In the roller cover 240 , the roller 235 is rotatably housed in such a manner that the lower end of the roller 235 is exposed downward from the roller cover 240 . In this embodiment, as shown in FIG. 17, the roller cover 240 has two members of a pair of left and right cover 240a and the right cover 240b. However, the roller cover 240 may include one member, or may include three or more members.

In this embodiment, the left end of the right cover 240b is attached to the right end of the left cover 240a. As shown in FIG. 14 , when the left cover 240 a and the right cover 240 b are assembled, a cover space 241 is formed inside. Moreover, when the left cover 240a and the right cover 240b are assembled, the bottom is open, and the cover space 241 is connected to the opening of the bottom.

In this embodiment, the rotating shaft 245 is provided on the roller cover 240 . The roller 235 is inserted into the rotating shaft 245 . The roller 235 rotates around the rotation shaft 245 . The rotating shaft 245 is disposed in the cover space 241 and extends left and right. Here, the rotating shaft 245 is integrally formed with the right cover 240b, and extends from the right cover 240b to the left cover 240a. Furthermore, the rotating shaft 245 can also be integrally formed with the left cover 240a, or can be a separate body from the left cover 240a and the right cover 240b.

In this embodiment, as shown in FIG. 15 , a concave portion 251 is formed on the inner peripheral surface of the cap 233 . As shown in FIG. 14 , two recesses 251 are formed on the inner peripheral surface of the cap 233 . However, the number of recesses 251 is not particularly limited, and may be one or three or more. Here, the two recesses 251 face each other. A concave portion 251 is formed at the lower left side of the inner peripheral surface of the cap 233 , and another concave portion 251 is formed at the lower right side of the inner peripheral surface of the cap 233 .

On the outer peripheral surface of the roller cover 240 , a convex portion 252 fitted with the concave portion 251 is formed. The convex portion 252 protrudes from the outer peripheral surface of the roller cover 240 . The number of protrusions 252 is not particularly limited, and is, for example, two which are the same as the number of recesses 251 . A convex portion 252 is formed on the lower portion of the outer peripheral surface of the left cover 240 a of the roller cover 240 . Another protrusion 252 is formed on the lower part of the outer peripheral surface of the right cover 240b of the roller cover 240 . In this embodiment, when the roller cover 240 is fitted into the fitting space 234 of the cap 233 , the convex portion 252 is fitted into the concave portion 251 .

Furthermore, in this embodiment, the concave portion 251 is formed on the inner peripheral surface of the cap 233 , and the convex portion 252 is formed on the outer peripheral surface of the roller cover 240 , however, the positions of the concave portion 251 and the convex portion 252 may also be reversed. That is, the concave portion 251 may be formed on the outer peripheral surface of the roller cover 240 and the convex portion 252 may be formed on the inner peripheral surface of the cap 233 .

In this embodiment, as shown in FIG. 16 , a groove 255 is formed in the lower part of the outer peripheral surface of the roller cover 240 . The number and position of the slots 255 are not particularly limited. Here, two grooves 255 are formed in the roller cover 240 . Specifically, one groove 255 is formed in the front lower portion of the outer peripheral surface of the roller cover 240 , and the other groove 255 is formed in the rear lower portion of the outer peripheral surface of the roller cover 240 . Here, as shown in FIG. 17, a groove 255 formed in the front lower portion of the roller cover 240 is formed along the left cover 240a to the right cover 240b. The illustration of another groove 255 formed in the rear lower part of the roller cover 240 is omitted, and it is also formed along the left cover 240a to the right cover 240b. However, the two grooves 255 may be formed in any one of the left cover 240a and the right cover 240b. A removal tool (not shown), such as a flathead screwdriver, is inserted into the groove 255 .

For example, when the roller cover 240 is removed from the cap 233 , firstly, the above-mentioned removal tool is inserted between the roller cover 240 and the cap 233 from below. Next, the detachment tool is pressed upward, and the front end of the detachment tool is inserted into the groove 255 . Thereafter, in a state where the front end of the removal tool is inserted into the groove 255, the front end is moved downward, and the roller cover 240 is extruded downward. As a result, the roller cover 240 can be detached from the cap 233 .

As mentioned above, in this embodiment, as shown in FIG. 13, the roller 235 is detachably provided in the lower part of the front leg 10 of the bathroom chair. The bathroom chair is tied to the user in the bathroom, for example, dirt such as scale or hair tends to adhere to the inside of the cap 233 or the rollers 235 . However, since the roller 235 can be easily detached from the front foot 10, it is easy to remove the dirt attached to the cap 233 or the roller 235, and it is easy to clean the cap 233 or the roller 235.

In this embodiment, the roller 235 can be installed on the cap 233 through the roller cover 240 . In addition, the roller 235 is rotatably accommodated in the roller cover 240 . By providing such a cap 233 and a roller cover 240 , the roller 235 can be detachably installed under the front foot 10 , and the roller 235 can be rotated while being installed under the front foot 10 .

In this embodiment, as shown in FIG. 15 , a concave portion 251 is formed on the inner peripheral surface of the cap 233 , and as shown in FIG. 16 , a convex portion 252 fitted with the concave portion 251 is formed on the outer peripheral surface of the roller cover 240 . Thereby, when the roller cover 240 is inserted into the cap 233 , the concave portion 251 and the convex portion 252 are in a state of fitting together, and the movement of the roller cover 240 in the vertical direction is further restricted. Accordingly, the roller cover 240 is not easy to fall off from the cap 233 .

In this embodiment, a groove 255 is formed in the lower part of the outer peripheral surface of the roller cover 240 . Thereby, the roller cover 240 and the roller 235 can be removed from the cap 233 by inserting the front end of a removal tool such as a flathead screwdriver into the groove 255 . Thereby, the roller cover 240 and the roller 235 can be easily disassembled from the cap 233 by using a dismantling tool.

5‧‧‧ground 10‧‧‧Forefoot 11‧‧‧Forefoot down 12‧‧‧step forward 15‧‧‧Link frame 16‧‧‧Vertical frame 17‧‧‧horizontal frame 18‧‧‧Bracket 19‧‧‧horizontal axis 20‧‧‧hind foot 21‧‧‧Helped foot down 22‧‧‧on the back foot 22a‧‧‧Departure Department 30‧‧‧rotating mechanism 31‧‧‧connecting shaft 33‧‧‧Front anti-slip cap (another anti-slip part) 33a‧‧‧contact surface 35‧‧‧Roller (sliding part) 36‧‧‧Brackets for rollers 36a‧‧‧rotation axis 37‧‧‧Rear anti-slip cap (anti-slip part) 37a‧‧‧contact surface 41‧‧‧1st support rod 42‧‧‧The second support rod 44‧‧‧1st connecting rod 45‧‧‧The second connecting rod 48‧‧‧containment components 49‧‧‧hook 50‧‧‧seat 50a‧‧‧Concave 51‧‧‧seat surface 56‧‧‧handle 61‧‧‧Rear bracket 62‧‧‧Front bracket 63‧‧‧connecting shaft 64‧‧‧Supported Department 65‧‧‧Strengthening components 66‧‧‧Connecting rod 70‧‧‧backrest 70a‧‧‧backrest 71‧‧‧hole 72‧‧‧Concave 80‧‧‧Operating handle 81‧‧‧Stent 82‧‧‧axis 84‧‧‧pin 90‧‧‧handrail 100‧‧‧chairs (bathroom chairs) 133‧‧‧Front anti-skid cap 133a‧‧‧anti-slip surface 135‧‧‧Sliding surface 233‧‧‧cap 234‧‧‧Fitting space 235‧‧‧Roller 240‧‧‧Roller cover 240a‧‧‧Left cover 240b‧‧‧Right Cover 241‧‧‧cover space 245‧‧‧rotation axis 251‧‧‧Concave 252‧‧‧convex part 255‧‧‧slot A11‧‧‧Axis of lower front foot A12‧‧‧Axis of upper front foot A21‧‧‧Axis of lower rear foot A22‧‧‧Axis of upper rear foot D‧‧‧under D1‧‧‧1st distance D2‧‧‧2nd distance F‧‧‧before L‧‧‧Left P1‧‧‧folding position P2‧‧‧open position of chair legs R‧‧‧right After Rr‧‧‧ U‧‧‧Up

Fig. 1 is a perspective view of a bathroom chair of an embodiment. Figure 2 is the front view of the bathroom chair. Figure 3 is the rear view of the bathroom chair. Fig. 4 is the top view of the bathroom chair. Fig. 5 is a left side view showing a state in which the legs of the bathroom chair are opened. Fig. 6 is a left side view showing the folded state of the bathroom chair. Fig. 7 is a three-dimensional view of a bathroom chair. Fig. 8 is a three-dimensional view of a bathroom chair. Fig. 9 shows the left side view of the side anti-skid cap and the roller before the chair pin open position. Figure 10 shows the left side view of the front side anti-slip cap and rollers in the folded position. Fig. 11 shows the left side view of the front side anti-slip cap at the open position of the chair legs in another embodiment. Fig. 12 is a left side view showing the front side anti-slip cap in the folded position in another embodiment. Fig. 13 is a perspective view of another embodiment of a cap, a roller cover and a roller. Fig. 14 is a front sectional view of another embodiment of the cap, the roller cover and the roller. Fig. 15 is a perspective view of a cap in another embodiment. Fig. 16 is a side view of another embodiment of the roller cover and rollers. Fig. 17 is an exploded perspective view of another embodiment of the roller cover.

5‧‧‧ground

10‧‧‧Forefoot

11‧‧‧Forefoot down

12‧‧‧step forward

15‧‧‧Link frame

16‧‧‧Vertical frame

17‧‧‧horizontal frame

19‧‧‧horizontal axis

20‧‧‧hind foot

21‧‧‧Helped foot down

22‧‧‧on the back foot

22a‧‧‧Departure Department

30‧‧‧rotating mechanism

31‧‧‧connecting shaft

33‧‧‧Front anti-slip cap (another anti-slip part)

33a‧‧‧contact surface

35‧‧‧Roller (sliding part)

36‧‧‧Brackets for rollers

36a‧‧‧rotation axis

37‧‧‧Rear anti-slip cap (anti-slip part)

37a‧‧‧contact surface

41‧‧‧1st support rod

42‧‧‧The second support rod

48‧‧‧containment components

50‧‧‧seat

51‧‧‧seat surface

61‧‧‧Rear bracket

62‧‧‧Front bracket

63‧‧‧connecting shaft

65‧‧‧Strengthening components

66‧‧‧Connecting rod

70‧‧‧backrest

70a‧‧‧backrest

71‧‧‧hole

80‧‧‧Operating handle

81‧‧‧Stent

82‧‧‧axis

90‧‧‧handrail

100‧‧‧chairs (bathroom chairs)

A11‧‧‧Axis of lower front foot

A12‧‧‧Axis of upper front foot

A21‧‧‧Axis of lower rear foot

A22‧‧‧Axis of upper rear foot

D‧‧‧under

D2‧‧‧2nd distance

F‧‧‧before

P2‧‧‧open position of chair legs

After Rr‧‧‧

U‧‧‧Up

Claims (16)

A bathroom chair comprising: a first leg; a second leg, the lower part of which is located away from the lower part of the first leg; and a movement mechanism that makes the lower part of the first leg face the lower part of the second leg Approaching or departing from; when the lower part of the first leg and the lower part of the second leg approach the position of the first leg and the second leg as the folded position, the lower part of the first leg and the second leg When the position of the above-mentioned first leg and the above-mentioned second leg when the lower part is away from each other is set as the open position of the chair legs, an anti-slip part is provided on the lower part of any one of the above-mentioned first leg and the above-mentioned second leg, and the anti-slip part When the above-mentioned folded position and the above-mentioned chair leg are in the open position, it is in contact with the ground and its sliding resistance with the above-mentioned ground is the first resistance, and a sliding part is provided under any one of the above-mentioned first leg and the above-mentioned second leg, When the sliding part is in the folded position, it is in contact with the ground and its sliding resistance against the ground is the second resistance which is smaller than the first resistance; and when the chair legs are opened from the folded position, the sliding part is in contact with the ground. One side moves, and the lower part of the other one provided with the sliding part moves away from the lower part of the one provided with the anti-slip part. Such as the bathroom chair of claim 1, wherein the above-mentioned first leg is the front leg, and the above-mentioned second leg is the rear leg, The moving mechanism is configured by connecting the first leg and the second leg so as to be relatively rotatable. The bathroom chair according to claim 1, wherein another anti-slip part is provided under the other of the first leg and the second leg, and the other anti-slip part is not in contact with the folded position. The above-mentioned ground is in contact with the above-mentioned ground when the above-mentioned chair legs are in the open position, and the sliding resistance with the above-mentioned ground is a third resistance greater than the above-mentioned second resistance. The bathroom chair according to claim 3, wherein the sliding portion is configured so as not to contact the ground when the chair legs are in the open position. The bathroom chair according to claim 3, wherein in the folded position, the other anti-slip part is disposed above the lower end of the sliding part. The bathroom chair according to claim 3, wherein when the chair legs are in the open position, the sliding part is arranged above the lower end of the other anti-slip part. The bathroom chair according to claim 1, wherein the sliding part is a roller rotatable relative to the lower part of any one of the first leg and the second leg. The bathroom chair according to claim 7, wherein the above-mentioned rollers are arranged to be detachable from the bottom of any one of the above-mentioned first leg and the above-mentioned second leg. The bathroom chair according to claim 8, which includes: a cap covering the lower portion of the other of the first leg and the second leg and forming a fitting space recessed upward from the bottom surface; and a roller cover , is detachably embedded in the above-mentioned fitting space of the above-mentioned cap, and the above-mentioned roller is rotatably accommodated in a manner that the lower end of the above-mentioned roller is exposed downward. The bathroom chair according to claim 9, wherein a recess is formed on any one of the inner peripheral surface of the above-mentioned cap and the outer peripheral surface of the above-mentioned roller cover, and any one of the inner peripheral surface of the above-mentioned cap and the outer peripheral surface of the above-mentioned roller cover is formed. The other one is formed with a convex part that is embedded with the above-mentioned concave part. The bathroom chair according to claim 9, wherein the cap is formed of elastic body, and a groove is formed on the lower part of the outer peripheral surface of the roller cover. The bathroom chair according to claim 1, wherein at least a surface of the anti-slip portion in contact with the ground is made of rubber. Such as the bathroom chair of claim 1, wherein The above-mentioned sliding part is arranged at the lower part of the front foot, and the above-mentioned anti-slip part is arranged at the lower part of the rear foot. The bathroom chair according to claim 13, wherein the sliding part is provided on the front side of the lower part of the front leg. The bathroom chair according to claim 13, which is provided with a push-down portion, and the push-down portion is arranged directly or indirectly behind the moving mechanism in a side view when the folded position and the chair legs are opened. In the front leg, the pressing portion is configured to cause the lower part of the front leg to deviate from the lower part of the rear leg by applying a downward force. The bathroom chair according to claim 1, wherein the contact area of the sliding part in the folded position to the ground is a first area, and the contact area of the sliding part in the open position of the chair legs to the ground is smaller than the first area. 2nd area.

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