JP2007209590A - Stool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stool foldable and capable of being used as a walking stick in a folded state and helping safely walk through legs being compactly stacked in the use of it as the walking stick. <P>SOLUTION: A first leg member 11 provided with a handle 12 on the top and a second leg member 21 are slidably connected by a spherical joint 3. A seat member 31 is turnably connected to a slide member 41 slidable along the first leg member 11 via a first hinge structure 51 and to the top of the second leg member 21 via a second hinge structure on the back. Thereby the first leg member 11 and the second leg member 21 intersect at the joint 3. The leg members 11 and 21 can be shifted to a first state where a downward slide of the slide member 41 is restrained by a stopper structure from a second state where the first leg member 11 is follows the second leg member 21 and the slide member 41 is raised upward from the first state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a foldable chair that can be used as a cane in a folded state, and particularly relates to a chair in which two legs overlap like one leg in the folded state.

  A foldable chair that can be used in place of a cane in a folded state is particularly useful when a user with weak legs is going out. Patent Document 1 discloses a foldable chair provided with three legs on a plate-like stool. In this chair, one of the three legs is a straight bar, and the two legs that are pivotally connected so as to sandwich the leg are folded so that the lower sides are separated from each other. In this state, one leg located in the center is configured to contact the ground, and can be used instead of a cane. However, since such a chair is configured such that two legs that do not contact the ground spread apart from the cane, the two legs that do not contact the ground obstruct walking when used as a cane. There was a possibility.

JP-A-9-75172

  Therefore, in the present invention, it is a foldable chair that can be used as a cane in a folded state, and when used as a cane, a chair that can be compactly overlapped and walked safely can be used. It was an issue to provide.

According to a first aspect of the present invention, there is provided a first leg member having a handle on an upper portion, a second leg member connected to the first leg member, and a stool supported by the first leg member and the second leg member. A second connecting portion provided on the second leg member is slidably fitted to a spherical outer surface of the first connecting portion provided on the first leg member. A slide member that constitutes a connecting portion and the first leg member is slidably provided along the first leg member, and a stopper structure that suppresses sliding of the slide member below the slide member. And the stool member is pivotally coupled to the slide member via a first hinge structure, and via a second hinge structure provided on the back surface of the stool member. The second leg member is pivotally connected to the upper part of the second leg member, and the first leg member and the front The first leg member intersects the second leg member at the connecting portion, and the slide member is prevented from sliding downward by the stopper structure, and the first leg member and the second leg member are along the first state. The slide member changes to a second state where the slide member is raised upward from the first state.
In the chair according to the first aspect of the present invention, the second connecting portion is slidably fitted to the spherical outer surface of the first connecting portion to form a connecting portion, so that the spherical outer surface and the second connecting portion slide. By moving, the 1st leg member and the 2nd leg member can rotate by using a connection part as a fulcrum, and can change into the state where it crossed, and the state along. The seat member is connected to the slide member slidably provided on the first leg member via the first hinge structure, and is connected to the upper portion of the second leg member via the second hinge structure, As the state of the first leg member and the second leg member changes, the state of the seat member can also change. According to the chair of the present invention, the first leg member and the second leg member intersect at the connecting portion, and the seat member is seated on the seat member in the first state in which the slide member is prevented from sliding downward. Then, the first leg member and the second leg member are aligned, and the slide member is folded in the second state where the slide member is raised upward from the first state.

2nd invention is a chair as described in 1st invention, Comprising: The said 1st leg member is pipe shape, On the side surface of the said 1st leg member, it is the said 1st connection part and the said stopper structure. An upper hole located between the first connecting portion and a lower hole located below the first connecting portion, and the upper leg and the lower hole are passed inside the first leg member. A rope is passed through, and one end of the rope is fixed to the slide member, and the other end of the rope is fixed to the second leg member. In the first state, the angle at which the first leg member and the second leg member intersect with each other because the convex portion cannot pass through the upper hole on the side surface of the first leg member in the first state. It is a chair characterized by suppressing the spread of the chair.
According to the chair of the second invention, one end of the rope is fixed to the slide member, and the other end passes through the inside of the first leg member from the upper hole provided in the pipe-shaped first leg member, and the lower hole And is fixed to the second leg member. A portion protruding outside the upper hole of the rope is provided with a convex portion. In the first state where the rope is seated, the convex portion cannot pass through the upper hole, so that the first leg member and the second leg member It is suppressed that the angle of the crossing extends beyond a predetermined angle. Further, in the second state, the rope does not hang down because it is pulled by the slide member and extends along the first leg member.

3rd invention is a chair as described in 1st invention or 2nd invention, Comprising: The said 2nd leg member is a bowl shape in which the surface facing the said 1st leg member was dented, In the state of 2, the chair is characterized in that the second leg member can cover and overlap the outer surface of the first leg member.
According to the chair of the third invention, the second leg member covers the first leg member in the folded second state, and the first leg member and the second leg member look like one leg member. Can be.

According to the chair of the first invention, the chair can be folded, and in the first state, it can be seated on the seat member, and in the second state, it can be folded, and the first leg member can be used as a support, Can be used as In this folded state (second state), since the two leg members are in a state along, the second leg member that is not used as a walking stick does not interfere with walking and can walk safely. it can.
According to the chair of the second invention, in the first state in which the expansion of the angle of the intersection between the first leg member and the second leg member is suppressed by the rope and is seated, the second state is excellent. In this case, the safety during walking is maintained without the rope hanging down.
According to the chair of the third invention, when used as a cane in the folded state (second state), the second leg member that is not used overlaps with the first leg member that becomes the support column, so that the second leg member that is not used is not used. The biped member can walk safely without getting in the way. Moreover, it is neat and easy to carry.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a chair according to the present embodiment, in which a first state is indicated by a solid line and a second state is indicated by a two-dot chain line. FIG. 2 is a rear view of the chair of FIG. 1 in a second state. FIG. 3 is a partial view showing the seat member of the side view in the first state of the chair of FIG. 1 with a part cut away, and FIG. 4 is the seat member of the side view in the second state of the chair of FIG. FIG. 5A is a cross-sectional view taken along the line AA of the chair shown in FIG. 2, and FIG. 5B is a view showing an end surface of the BB cutting portion of the chair shown in FIG. c) is a figure which shows the end surface of the CC cutting part of the chair shown in FIG. 6 (a) is a rear view of the first leg member of the chair of FIG. 1, and FIG. 6 (b) is a DD cross-sectional view of the first leg member shown in FIG. 6 (a). 6 (c) is an EE cross-sectional view of the first leg member shown in FIG. 6 (b).

  As shown in FIG. 1, the chair 1 includes a first leg member 11 having a handle 12 at the top, a second leg member 21 connected to the first leg member 11, a first leg member 11, and a second leg. And a second connecting portion 23 provided on the second leg member 21 on a spherical outer surface 14 of the first connecting portion 13 provided on the first leg member 11. Are slidably fitted to form the connecting portion 3.

  Specifically, as shown in FIG. 1, the chair 1 includes a first leg member 11 and a second leg member 21 each having a substantially L-shaped handle 12, and a disc-shaped stool. The member 31 is supported by two leg members, the first leg member 11 and the second leg member 21. The first leg member 11 is provided with a hollow spherical first coupling portion 13 having a spherical outer surface 14 (see FIG. 6A), and the second leg member 21 has a spherical shell-shaped second coupling. A portion 23 is provided. As shown in FIG. 5A and FIG. 5B, the second connecting portion 23 is slidably fitted to the spherical outer surface 14 of the first connecting portion 13 to constitute the connecting portion 3. When the spherical outer surface 14 and the second connecting portion 23 slide, the first leg member 11 and the second leg member 21 rotate with the connecting portion 3 as a fulcrum, intersecting the state, and the along state (See FIG. 1).

  As shown in FIG. 5B, a center shaft 23 a is provided inside the second connecting portion 23 in order to make the turning action of the first leg member 11 and the second leg member 21 smooth. . The center shaft 23 a is welded and fixed to the second connecting portion 23, and in a state orthogonal to the longitudinal direction of the first leg member 11, the holes 11 a and 11 b provided in the first leg member 11 and the first The holes 13a and 13b provided in the connecting member 13 are inserted. The center shaft 23 a not only functions as a rotation center of rotation of the first connecting portion 13 and the second connecting portion 23, but also functions as a reinforcing structure for the connecting portion 3.

  As shown in FIG. 2, the first leg member 11 suppresses sliding of the slide member 41 below the slide member 41, and a slide member 41 slidably provided along the first leg member 11. And a stopper structure 45.

  Specifically, the slide member 41 is a cylindrical member provided so as to go around the outer periphery of the first leg member 11, and is slidable along the first leg member 11 above the first connecting portion 13. Is provided. A cylindrical stopper member 45 is fixed to the first leg member 11 below the slide member 41. When the slide member 41 is slid downward, the slide member 41 comes into contact with the stopper member 45, and the slide of the slide member 41 is suppressed (see FIG. 3). Therefore, in the present embodiment, the stopper member 45 corresponds to the “stopper structure” of the present invention.

  As shown in FIG. 3, the stool member 31 is rotatably connected to the slide member 41 via the first hinge structure 51, and the second hinge structure 55 provided on the back surface of the stool member 31. The upper part of the second leg member 21 (21a) is pivotally connected via the pin.

  Specifically, as shown in FIGS. 3 and 4, the rotation shaft 52 of the first hinge structure 51 is provided so as to be orthogonal to the longitudinal direction of the first leg member 11. The edge of the seat member 31 is connected to the slide member 41 provided on the first leg member 11 via the first hinge structure 51. In other words, the stool member 31 is connected to the slide member 41 so as to be rotatable in a direction in which the angle between the stool surface 32 and the first leg member 11 changes. The seat member 31 is connected to the upper part of the second leg member 21 (21a) via a second hinge structure 55 provided on the back surface 33 thereof. The rotating shaft 56 of the second hinge structure 55 is provided in parallel with the rotating shaft 52 of the first hinge structure 51, and the second hinge structure 55 is configured by the operation of the first hinge structure 51. Is in an operable state as it rotates.

  The first state in which the first leg member 11 and the second leg member 21 intersect at the connecting portion 3 and the slide member 41 is prevented from sliding downward by the stopper structure 45; Along with the two-leg member 21, the slide member 41 changes to the second state where it is raised upward from the first state.

  Specifically, the chair 1 can be changed between a first state indicated by a solid line in FIG. 1 and a second state indicated by a two-dot chain line in FIG. In the first state, the first leg member 11 and the second leg member 21 intersect with each other at the connecting portion 3, and as shown in FIG. 3, the slide member 41 contacts the stopper member 45, and the slide member 41. Sliding downward is suppressed. At this time, the stool member 31 is lying down and can be seated. In the second state, the first leg member 11 and the second leg member 21 are aligned, and as shown in FIG. 4, the slide member 41 is raised upward from the first state, and the seat member 31 is raised. It has become. At this time, the second leg member 21 and the stool member 31 look like they are attracted to the first leg member 11, and the chair 1 is folded. In this second state, the chair 1 can be used as a cane with the first leg member 11 as a support. At this time, since the two leg members are in a state along, the second leg member 21 that is not used as a walking stick does not interfere with walking and can walk safely.

  In the second state, the chair of the present invention locks the slide member 41 upward in order to prevent the slide member 41 from sliding down and changing to the first state when used as a cane. It is more preferable that a means is provided. In the present embodiment, the lock member 47 provided above the first leg member 11 engages with the lock hole 42 provided in the slide member 41, so that the slide member 41 can be locked upward. it can.

  Specifically, as shown in FIG. 3, the lock member 47 is a thin plate-like member having two protrusions 47 a and 47 b on one side, and is elastically supported on the inner wall of the unit pipe 46 via a spring 48. Has been. The unit pipe 46 is fitted into the first leg member 11, and notches formed in the first leg member 11 and the unit pipe 46 are overlapped to form a hole 49. At this time, the lock member 47 is elastically supported on the inner wall of the unit pipe 46 with the protrusions 47 a and 47 b protruding from the hole 49. When the slide member 41 is slid upward, the slide member 41 slides while pushing the lock member 47 into the first leg member 11 with its inner wall. When the slide member 42 is further slid upward and the hole 49 and the lock hole 42 provided in the slide member 41 overlap, the lock member 47 is pushed back by the elastic force of the spring 48, and the lower protrusion 42a becomes the lock hole. It engages with the edge of the lock hole 42 in a state protruding from 42. Thereby, the slide member 41 is locked upward (see FIG. 4). Note that the locked state can be released with one touch by pressing the upper protrusion 42b and pressing the lock member 47 into the first leg member 11.

  The first leg member 11 is in the form of a pipe. On the side surface of the first leg member 11, an upper hole 61 located between the first connecting portion 13 and the stopper structure 45, and below the first connecting portion 13. A lower hole 63 is provided. Inside the first leg member 11, a rope 65 is passed through an upper hole 61 and a lower hole 63, and one end of the rope 65 extending from the upper hole 61 is fixed to the slide member 41, and the lower hole 63. The other end coming out from the second leg member 21 is fixed. The rope 65 is provided with a convex portion 67. Since the convex portion 67 cannot pass through the upper hole 61 on the side surface of the first leg member 11 in the first state, the first leg member 11 and the second leg The expansion of the angle intersecting with the member 21 is suppressed.

  Specifically, as shown in FIG. 6, the first leg member 11 has a pipe shape, and two holes, an upper hole 61 and a lower hole 63, are provided on the side surface of the first connecting member 13. It has been. A rope 65 is passed through the first leg member 11 across the upper hole 61 and the lower hole 63, and one end of the rope 65 from the upper hole 61 is fixed to the slide member 41. The other end coming out of 63 is fixed at a position facing the lower hole 63 of the second leg member 21. As shown in FIG. 1, the rope 63 is provided with a convex portion 67 positioned at a portion protruding from the upper hole 61. When the first leg member 11 and the second leg member 21 intersect at the connecting portion 3 and the angle of the intersection expands, the second leg member 21 expands while pulling the rope 65. Here, the “intersection angle” refers to the angle of intersection between the first leg member 11 and the second leg member 21 indicated by θ in FIG. In the first state, when the convex portion 67 catches on the edge of the upper hole 61, it cannot pass through the upper hole 61, and the second leg member 21 cannot pull the rope 65 any more. As a result, the angle of intersection between the first leg member 11 and the second leg member 21 does not expand beyond a predetermined level.

  In the first state, when a person sits on the stool member 31, a force in a downward direction is applied to the stool member 31, and accordingly, the angle of intersection between the first leg member 11 and the second leg member 21 is further expanded. Force is applied in the direction. At this time, the stopper member 45 prevents the slide member 41 from sliding downward, and further, the convex portion 67 of the rope 65 is caught in the upper hole 61, whereby the first leg member 11 and the second leg member 21 The spread of the angle of the crossing is suppressed. Thus, in addition to the action of the stopper member 45, the rope 65 acts, so that the first state can be reliably maintained even when the person is seated. Therefore, when used as a chair, a person sitting stably can be supported. In the present embodiment, the lower end 15 of the second leg member 21 is formed in a T shape with a size that does not interfere with walking in the second state. Thus, in the first state, the chair 1 can stand alone, and when a person sits down, the chair 1 can sit more stably without wobbling from side to side.

  Further, when the chair 1 is in the second state, the rope 65 is pulled by the slide member 41 and extends along the first leg member 11, and when used as a cane, the rope 65 hangs down and is caught on the leg. There is no. Therefore, the length of the rope 65 must be at least a length that does not prevent the sliding member 41 from sliding upward and does not hang down in the second state.

  As shown in FIGS. 6B and 6C, a guide groove 64 that is gently curved and continues to the lower hole 63 is provided inside the lower hole 63. A rope 65 is passed along. Since the rope 65 enters and exits the lower hole 63 along the guide groove 64, friction between the rope 65 and the edge of the lower hole 63 is reduced, and it is possible to prevent the rope 63 from being thinned or cut by friction. it can.

  The second leg member 21 has a bowl shape in which the surface 25 facing the first leg member 11 is recessed. In the second state, the second leg member 21 covers the outer surface of the first leg member 11. be able to.

  Specifically, the second leg member 21 is composed of bowl-shaped portions 21a and 21b and a second connecting portion 23, and the two connecting portions 23 sandwiching the second connecting portion 23 are opened in opposite directions. It looks like a bowl-shaped part 21a, 21b is connected. Further, in order to prevent the bowl-shaped portions 21a and 21b from gradually opening with use, a plurality of reinforcing structures 26 are provided so as to be curved along the outer periphery and protrude in a band shape. As shown in FIG. 5C, in the second state, the second leg member 21 (21a, 21b) covers the first leg member 11, and as a result, the first leg member 11 and the second leg member 21 are overlapped. Becomes like a single leg member (see the two-dot chain diagram shown in FIG. 1 and FIG. 2). Thereby, the chair 1 can be folded more compactly. Therefore, in the second state, when the chair 1 is used as a cane, the second leg member 21 that is not used can be safely walked without getting in the way, and the appearance is also clean and excellent in portability.

  Further, as shown in FIG. 6A, the first leg member 11 is provided with a plurality of cushion materials 19. The cushion material 19 is located between the first leg member 11 and the second leg member 21 (21a, 21b) when used as a cane in the second state, and the first leg member 11 and the second leg member The member 21 (21a, 21b) is prevented from coming into contact with the sound and exerts a soundproofing effect.

The chair 1 having the above configuration operates as follows.
The chair 1 can be changed between a first state where the chair 1 is seated and a second state where the chair 1 can be folded and used as a cane. In the first state, the first leg member 11 and the second leg member 21 intersect at the connecting portion 3, the seat member 31 is lying sideways, the slide member 41 contacts the stopper member 45, and the slide member The downward sliding of 41 is suppressed. In the second state, the first leg member 11 and the second leg member 21 are along, the slide member 41 is raised upward from the first state, and the seat member 31 is raised.
Furthermore, in the first state, since the convex portion 67 of the rope 65 is caught in the upper hole 61, the expansion of the angle of intersection of the first leg member 11 and the second leg member 21 is suppressed, so that stability is achieved. Is excellent. In the second state, the rope 65 extends along the first leg member 11, and the second leg member 21 covers the first leg member 11 so that it looks like a single leg member. 65 and the 2nd leg member 21 which is not used do not get in the way, and can walk safely when used as a cane.

In the present invention, the material of each member is not particularly limited, and the shape is not limited to the present embodiment.
The first leg member 11 and the second leg member 21 can be made of various materials such as metals such as aluminum and steel, carbon, and synthetic resin. The shape of the handle 12 of the first leg member 11 is not limited to a substantially L shape, for example, it is formed in a T shape, or a depression or groove is formed so that the finger is familiar and straight. Any shape may be used as long as it is shaped like a knob so that it can be easily grasped by hand. Further, the lower ends of the first leg member 11 and the second leg member 21 may be provided with anti-skids 17, 27a, 27b that also serve as cushions and are made of an elastic material such as synthetic rubber or synthetic resin.

  The seat member 31 can be made of various materials such as metal, synthetic resin, wood, leather, sponge, cloth, etc., and a plurality of these may be used in combination. Moreover, the shape of the seat member 31 is not particularly limited, and can be various shapes. For example, it can be formed by stacking sponge as an elastic material on the core material of a metal plate and further covering the surface with a soft cloth.

  As the rope 65, various ropes such as a wire rope and a synthetic resin rope can be used.

It is a perspective view of the chair concerning this embodiment. It is a rear view in the 2nd state of the chair of FIG. FIG. 2 is a partial view of the chair shown in FIG. 1 in a first state with a part of the stool in the side view cut away. FIG. 7 is a partial view showing the seat member of the side view in the second state of the chair of FIG. 1 with a part cut away. (A) is AA sectional drawing of the chair shown in FIG. 2, (b) is a figure which shows the end surface of the BB cutting part of the chair shown in FIG. 2, (c) is the chair shown in FIG. It is a figure which shows the end surface of the CC cutting part. (A) is a rear view of the 1st leg member of the chair of Drawing 1, (b) is DD sectional view of the 1st leg member shown in Drawing 6 (a), (c) is It is EE sectional drawing of the 1st leg member shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chair 3 Connection part 11 1st leg member 12 Grasping handle 13 1st connection part 14 Spherical outer surface 21 2nd leg member 23 2nd connection part 31 Seat member 41 Slide member 45 Stopper member (stopper structure)
51 First Hinge Structure 55 Second Hinge Structure 61 Upper Hole 63 Lower Hole 65 Rope 67 Projection

Claims (3)

A first leg member provided with a handle on the upper part; a second leg member connected to the first leg member; and a stool member supported by the first leg member and the second leg member. A chair,
A second connecting portion provided on the second leg member is slidably fitted to a spherical outer surface of the first connecting portion provided on the first leg member to constitute a connecting portion;
The first leg member includes a slide member that is slidable along the first leg member, and a stopper structure that suppresses sliding of the slide member below the slide member. And
The stool member is pivotally connected to the slide member via a first hinge structure, and the upper part of the second leg member via a second hinge structure provided on the back surface of the stool member. And can be connected freely.
A first state in which the first leg member and the second leg member intersect at the connecting portion, and the sliding member is prevented from sliding downward by the stopper structure;
A chair which changes to the 2nd state where the 1st leg member and the 2nd leg member follow, and the slide member goes up from the 1st state. The chair according to claim 1,
The first leg member is pipe-shaped,
The side surface of the first leg member is provided with an upper hole positioned between the first connecting portion and the stopper structure, and a lower hole positioned below the first connecting portion,
Inside the first leg member, a rope is passed through the upper hole and the lower hole,
The rope has one end coming out from the upper hole fixed to the slide member, and the other end coming out from the lower hole fixed to the second leg member,
The rope is provided with a convex portion, and in the first state, the convex portion cannot pass through the upper hole on the side surface of the first leg member. A chair characterized in that it prevents the angle of intersection with the two leg members from expanding. The chair according to claim 1 or 2,
The second leg member has a bowl shape in which the surface facing the first leg member is recessed, and in the second state, the second leg member may overlap the outer surface of the first leg member. A chair that can be made.

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