CN2258017Y - An improved reclining chair - Google Patents

Abstract

The utility model relates to an improved sitting and lying chair, which is mainly characterized in that a sitting and lying adjusting structure is arranged between a cushion and armrests, namely, a hollow oblique conduit is designed at a proper position on one end surface of the armrests, a shaft lever is matched in the aperture of the hollow oblique conduit and is screwed on the upper end of the shaft lever by a screw to be locked beside one side of the cushion, thereby the shaft lever can move up and down along the conduit in an oblique way; in addition, a screw hole is arranged on the side edge of the handrail and penetrates through the inclined conduit, and a handle can be arranged on one side of the handrail and is used for screwing, fixing and unscrewing adjustment.

Description

An improved reclining chair

The utility model relates to an improved sitting and reclining chair, in particular to a reclining and reclining chair with a sitting and reclining adjustment group between a seat cushion and an armrest, and the inclination angle is controlled by a shaft rod sliding in the aperture of a hollow inclined conduit.

Generally known sitting and reclining chair structure traditionally, such as the No. 28241 of Taiwan New Approved Patent Case Announcement No. 28241 " multi-section sitting and reclining dual-purpose chair without fixed chair feet ", it is characterized in that there is a group of slides under the seat cushion and behind the back cushion. rail, and there are multiple rollers on the frame, when the back cushion is tilted backward, use the rollers of the back cushion as a fulcrum to push the seat cushion to slide forward, and then buckle one end of the tension spring to the armchair frame and the other end to the It is located at the bottom of the seat cushion, and uses an air pressure cylinder to control the speed of the back cushion tilting backwards or upwards, so as to achieve ideal safety. But this structure still has a fly in the ointment, for example, the action mode of the reclining chair is fixed by the rollers and moved by the slide rails, so when the body is lying backward, it is necessary to apply the force applied to the back pad by the back, Turn the slide rail of the back cushion along the roller and slide it downward, so that the seat cushion is pushed forward. But when getting up, the back cushion and the seat cushion cannot return to their original state by themselves, and must be restored by the pulling force of the spring. In addition, in order to control the speed of backrest tilting or upward recovery, it is also necessary to use a pneumatic cylinder as a buffer element, which increases the complexity of the structure of the reclining chair, and the cost of manufacturing and assembly is increased, and it is easy to use. malfunctions, making it uneconomical. Therefore, this design still needs to be improved.

The main purpose of the utility model is to solve the shortcoming of complex structure of common sitting chairs, and provide a sitting chair with simple structure and easy operation. That is, a sitting and lying adjustment group is set between the seat cushion and the armrest, and the most comfortable adjustment and setting can be made with the change of the sitting posture of the person.

In order to achieve the above-mentioned purpose, the utility model adopts the technical means that the seat and the back of the chair are hinged together, and the back of the chair is pivoted on the relative inner side of the vertical section of the armrest with a protruding shaft. There is a sitting and lying adjustment group on the side and the appropriate place of the armrest. The sitting and lying adjustment group includes a hollow inclined conduit arranged at the appropriate place of the armrest, a shaft is passed through the aperture of the hollow inclined conduit, and a gasket is arranged on the upper end of the shaft It is fixed with screws at an appropriate place on one side of the seat cushion, so that the shaft can slide up and down in the hollow inclined conduit. In addition, a handle is provided at the junction of the armrest and the hollow inclined conduit, which is used for screw fixing or screwing. Loosen the shaft rod to achieve the purpose of fixing or adjusting the appropriate angle of the chair back for sitting or lying down.

The above-mentioned and other purposes, effects and characteristics of the present utility model will be more clearly illustrated in conjunction with the following drawings.

Fig. 1 is the three-dimensional assembly diagram of the utility model sitting and reclining chair;

Fig. 2 is a three-dimensional exploded view of the utility model sitting and reclining chair;

Fig. 3 is a side view of the use position of the utility model sitting and reclining chair;

Fig. 4 is a side view of another use position of the sitting and reclining chair of the present invention.

As shown in Figure 1, the sitting and reclining chair of the present utility model comprises a seat base 1, a chair back 2 and a sitting and reclining adjustment group 3, the chair sitting 1 and the chair back 2 are hinged together by a hinge 4, and the chair The back 2 is pivoted on the armrest 8 with a protruding shaft 12 . Referring to Fig. 1 and Fig. 2, an armrest 8 is respectively provided on both sides of the seat 1, and a connecting plate 10 is provided at the bottom of the seat 1 and connected to the bottom of the armrests 8 on both sides. The connecting plate 10 is not fixed to the seat 1, And the seat 1 can be slid on the connecting plate 10 . From the central part of the connecting plate 10 slightly to the rear, a chair shaft 5 for supporting the seat is extended downwards. The bottom end of the chair shaft 5 is connected with several chair feet 6 and the grounding direction wheels 7 that spread out radially. , a protruding shaft 12 is respectively arranged on the left and right sides of the chair back 2, so that the protruding shafts 12 on both sides are respectively pivotally arranged on the relative inner surfaces of the 8 vertical sections, so that the chair back 2 can take the protruding shafts on both sides as the center of rotation , to realize the position change of leaning back or standing upright. Among them, a sitting and lying adjustment group 3 is provided between the appropriate lower end surface of the armrest 8 and one side of the seat 1, that is, a hollow inclined conduit 13 is provided at an appropriate lower end surface of the armrest 8, and a washer 16 is welded to a shaft rod 15 At the upper end, the shaft 15 is passed through the hole 14 of the hollow inclined conduit 13, and a fixing screw 17 passes through the washer 16 at the upper end of the shaft 15 and is fixed on the seat with a nut 18, and one side is provided with a screw hole 11 Inside. In addition, a screw hole 9 is provided on the side edge of the handrail 8 corresponding to the inclined conduit 13 for matching with an adjustment handle 19 to set the extension length of the shaft 15 . The distance between the washer 16 at the top of the shaft rod 15 and the hinge 4 is several times the distance between the protruding shaft 12 and the hinge 4 .

Now in conjunction with the above-mentioned components, the purposes and action embodiments of the present utility model are described in detail

Example 1

As shown in Figure 3, the utility model is to set a sitting and lying adjustment group 3 that can adjust the inclination angle of the chair back 1 between the seat 1 and the lower end surface of the armrest 8. 14 slide up and down. When the seat 1 is used in a normal sitting position, the shaft rod 15 slides down in the hole 14 of the hollow inclined conduit 13, and the seat back 2 moves forward to the required vertical angle, and then the handle 19 on the side is tightened and fixed. It is the normal seat back; when the user takes a sitting posture and sits vertically on the seat 1 of the present reclining chair, the center of gravity is located on the buttocks, and a vertically downward center of gravity force is applied to On the seat 1, the force is transmitted from the seat 1 to the armrest 8 through the fixing screw 17, the shaft rod 15 and the inclined conduit 13, and then passes through the armrest 8 through the connecting plate 10 and the chair shaft 5, and several branches spread out radially. The chair legs 6 and the caster 7 on the ground are transmitted to the ground. Since the floor area of several chair legs 6 launched radially is greater than the surface area of the seat, and the position of the center of gravity and the vertical direction of the user who takes a sitting posture The lower center of gravity force W is located directly above the chair shaft 5, that is, above the center point of several chair feet 6 that are spread out radially, so the sitting-lying chair of the present application can be very firmly supported Seated Actor.

Example 2

As shown in Figure 4, when the user wants to make the chair back 2 recline, he can unscrew the handle 19 on the side of the seat 1, and then be pulled by the forward movement of the seat 1, so that the shaft 15 Slide upwards in the hollow inclined conduit 13, and then make the seat 1 and the hinge 4 move slightly forward and upward for a very short distance in a translational manner, so that the seat back 2 can be rotated with the protruding shafts 12 on both sides in the direction of rotation. The rear tilts at a large angle, which is due to the difference in the length of the moment arm between the two. That is to say, the seat 1 in this application only needs to protrude forward for a small distance, so that the chair back 2 can be tilted to the angle desired by the user, and then the side handle 19 can be tightened to fix the angle of sitting and lying .

In the reclining chair of the present utility model, no matter the chair back 2 is tilted to any angle, the seat 1 is kept in a horizontal state, and the seat 1 is in the front high hall when the chair back is tilted backward with the general chair. There is a huge difference in the low inclination state, so when the user lies down on the reclining chair of the present application, the distance for the center of gravity of the body to move backward is much shorter than that of ordinary chairs. Simultaneously, most of the weight of the user's body is transmitted vertically downwards to the chair 1 from his buttocks (as shown in the vertical force W2 in Figure 4), and only a small part is transmitted to the chair back 2 from his back. (As shown in the oblique force W3 in Figure 4), the oblique force W3 is transmitted from the seat back 2 to the armrest 8 via the protruding shafts 12 on both sides, and then from the armrest 8 through the connecting plate 10 and the chair shaft 5 to form a radial pattern. The several chair legs 6 and the ground universal wheels 7 that are unfolded are transmitted to the ground; and because the chair shaft 5 and each chair leg group 6 in the present application are slightly moved to the rear, the position of the center of gravity of the user who takes the lying position And the vertical force W2 that bears most of the user's body weight can still be located directly above the chair shaft 5 that moves slightly to the rear, that is, above the center points of several chair legs 6 that are spread out radially. The above-mentioned oblique force W3 on the chair back 2 is transmitted to the two side protruding shafts 12 of the armrests 8 on both sides, that is, above the occupied area of the several chair legs 6 spread out radially, because the two side protruding shafts The axis 12 does not break away from the area occupied by the chair leg group 6, so the user in the prone position has no possibility of falling backwards, so that the reclining chair of the present application can still support the reclining position quite firmly. users.

To sum up, the sitting and reclining chair of the present utility model can allow users to adjust the comfortable angle of sitting, lying and reclining by themselves by means of a sitting and reclining adjustment group. Its structure is simple, easy to operate, and good in stability. A great improvement has been made.

Claims (1)

1. An improved sitting and reclining chair, comprising a seat, a chair back, armrests on both sides, a connecting plate for connecting the armrests on both sides but not fixed to the seat seat, and the center of the connecting plate is slightly biased to the rear A chair shaft extends downward from the center of the chair shaft, and several chair feet connected to the bottom of the chair shaft and radially spread out, as well as universal wheels on the ground, are characterized in that the seat and the back of the chair are pivotally connected by hinges. Together, the back of the chair is pivoted on the opposite inner side of the vertical section of the armrest with the protruding shafts on both sides, and a sitting and lying adjustment group is arranged on one side of the seat and the appropriate position of the armrest. A hollow slanted conduit at the center, a shaft is passed through the hole of the hollow slanted conduit, a washer and a screw are fixed on the upper end of the shaft to an appropriate place on one side of the seat cushion, the distance between the washer at the top of the shaft and the hinge It is several times the distance between the protruding shaft and the hinge; the shaft can slide up and down in the hollow inclined duct, and a handle is provided at the junction of the handrail and the hollow inclined duct for screwing and fixing or rotating Loosen the shaft rod to achieve the purpose of fixing or adjusting the proper angle of the chair back for sitting or lying down.

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