A folding chair

Abstract

The folding chair comprises two front chair legs and two rear chair legs, the upper ends of the front chair legs and the upper ends of the rear chair legs are rotationally connected to form a chair leg group, and the two chair leg groups are arranged in left and right intervals; the two chair leg groups are respectively connected to two hip support rods, the two ends of the hip support rods respectively extend out of the front chair legs and the rear chair legs, the hip support rods have two connection positions rotationally connected to the front chair legs and the rear chair legs respectively; the two hip support rods are respectively rotationally connected to two back support rods at the ends close to the rear chair legs, and the folding chair further comprises a first connecting piece, two second connecting rods rotationally connected to the first connecting piece, the two second connecting rods are respectively rotationally connected to the two back support rods, the first connecting piece or the two second connecting rods are respectively rotationally connected to the upper ends of two first connecting rods, and the lower ends of the two first connecting rods are respectively rotationally connected to the two back support rods.

Description

Technical Field

[0001] This utility model relates to a folding chair, belonging to the field of home furnishing technology. Background Technology

[0002] Existing patent document CN203873350U discloses a simple folding chair frame, including a backrest tube, rear leg tube, seat frame tube, and front leg tube distributed on the left and right sides, and two rear cross tubes intersecting in a "+" shape. The upper end of the rear cross tube is hinged to the upper part of the backrest tube, and the lower end is hinged to the bottom of the rear leg tube. The lower end of the backrest tube is hinged to the rear part of the seat frame tube, the front part of the seat frame tube is hinged to the upper part of the front leg tube, and the rear end of the seat frame tube is hinged to the upper part of the rear leg tube. It also has an armrest tube, one end of which is movably connected to the upper part of the backrest tube through an armrest fixing member fixed to the upper part of the backrest tube, and the other end is movably connected to the top of the front leg tube. The armrest tube and the front leg tube move upward by the upward movement of the seat frame tube. A limiting member is provided at the top of the rear leg tube. The opening of the limiting member faces forward and is sized to match the backrest tube. One end of a connecting piece is movably connected to the lower part of the limiting member, and the other end of the connecting piece is movably connected to the lower part of the backrest tube. When opened, the rear leg tube is connected to the backrest tube through the connecting piece, and the limiting member abuts against the lower part of the armrest fixing member, so that the rear leg tube holds the backrest tube in place. The rear cross tube opens to fix the frame. The existing structure has problems such as insufficient back support and weak stability. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned shortcomings in the existing technology and to provide a folding chair with a reasonable structural design.

[0004] The technical solution adopted by this utility model is as follows: a folding chair, including two front chair legs and two rear chair legs, the upper ends of the front chair legs and the upper ends of the rear chair legs are rotatably connected to form chair leg assemblies, and the two chair leg assemblies are arranged at left and right intervals; the two chair leg assemblies are respectively connected to two buttock support rods, the two ends of the buttock support rods extend into the front chair legs and the rear chair legs respectively, and the buttock support rods have two connecting parts that are rotatably connected to the front chair legs and the rear chair legs respectively; the ends of the two buttock support rods near the rear chair legs are respectively rotatably connected to two back support rods, and also includes a first connector and two second connecting rods rotatably connected to the first connector. The two second connecting rods are respectively rotatably connected to the two back support rods, the first connector or the two second connecting rods are respectively rotatably connected to the upper ends of the two first connecting rods, and the lower ends of the two first connecting rods are respectively rotatably connected to the two back support rods.

[0005] The two first connecting rods are arranged in a cross configuration and rotatably connected, or the two first connecting rods are arranged in parallel.

[0006] The rear seat leg sleeve is equipped with a first sliding sleeve that is slidably connected to the rear seat leg. The first sliding sleeve is rotatably connected to the hip support rod. The rear seat leg sleeve is equipped with a limiting member that restricts the first sliding sleeve from sliding freely upward.

[0007] It also includes two armrests, which are slidably mounted above the chair legs. The armrests have grooves at the bottom, and the chair legs are slidably connected to the grooves via pins. The rear ends of the two armrests are rotatably connected to two back support rods.

[0008] It also includes two third links, with the lower ends of the two first links rotatably connected to one end of each of the two third links, and the other ends of the two third links rotatably connected to the two back support rods.

[0009] The two third links are rotatably connected.

[0010] Among them, the two third links are rotatably connected by the second connecting piece, which makes the two rotatably connected.

[0011] The front end of the hip support rod is bent downward to form a bend, with the bend forming an angle of 178°-100° with the horizontal plane.

[0012] Compared with the prior art, this utility model has the following advantages and effects:

[0013] The backrest of this invention has a first link and a second link, which provides good support for the back when in use and ensures stability when folded up. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of another embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0017] Example

[0018] like Figures 1 to 2As shown, a folding chair includes two front chair legs 1 and two rear chair legs 2. The upper ends of the front chair legs 1 and the upper ends of the rear chair legs 2 are rotatably connected to form chair leg assemblies, and the two chair leg assemblies are arranged at left and right intervals. The two chair leg assemblies are respectively connected to two buttock support rods 3. The two ends of the buttock support rods 3 extend from the front chair legs 1 and the rear chair legs 2, respectively. The buttock support rods 3 have two connecting parts that are rotatably connected to the front chair legs 1 and the rear chair legs 2, respectively. The two buttock support rods 3 are respectively rotatably connected to two back support rods 4 at the ends near the rear chair legs 2. The chair also includes a first connector 54 and two second connecting rods 52 that are rotatably connected to the first connector 54. The two second connecting rods 52 are respectively rotatably connected to the two back support rods 4. The first connector 54 or the two second connecting rods 52 are respectively rotatably connected to the upper ends of the two first connecting rods 51, and the lower ends of the two first connecting rods 51 are respectively rotatably connected to the two back support rods 4. In this embodiment, when a folding chair needs to be folded up, lifting the first connecting member 54 causes the two second connecting rods 52 connected to the first connecting member 54 to rotate, which in turn drives the first connecting rod 51 to rotate, thus folding up the chair. To unfold the chair, changing the direction of movement of the first connecting member 54 unfolds the chair. In this embodiment, the front chair legs 1 and the rear chair legs 2 can be made of metal tubing. The rotatable connection can be achieved using rivets, screws, or pins as in existing technologies. When the chair is in use, the user fixes the seat fabric 8 to the two buttock support rods 3 and the back support rod 4.

[0019] In a preferred embodiment, the two first connecting rods 51 are arranged in a cross configuration and rotatably connected; in another embodiment, the two first connecting rods 51 are arranged in parallel configuration.

[0020] In a preferred embodiment, the rear seat leg 2 is fitted with a first sliding sleeve 61 that is slidably connected to the rear seat leg 2. The first sliding sleeve 61 is rotatably connected to the hip support rod 3. The rear seat leg 2 is fitted with a limiting member 63 that restricts the first sliding sleeve 61 from sliding freely upwards. In this embodiment, in order to improve the stability of the overall structure, the rear seat leg 2 is provided with a limiting member 63. The limiting member 63 can be a screw that is fixedly connected to the rear seat leg 2. The screw protrudes to prevent the first sliding sleeve 61 from sliding further upwards.

[0021] In a preferred embodiment, the chair also includes two armrests 7, which are slidably disposed above the chair legs. The armrests 7 have a groove 70 at their bottom, and the chair legs are slidably connected to the groove 70 by a pin. The rear ends of the two armrests 7 are rotatably connected to the two back support rods 4.

[0022] In a preferred embodiment, it also includes two third links 53, the lower ends of the two first links 51 are rotatably connected to one end of the two third links 53 respectively, and the other ends of the two third links 53 are rotatably connected to the two back support rods 4 respectively.

[0023] In a preferred embodiment, the two third links 53 are rotatably connected.

[0024] In a preferred embodiment, the two third links 53 are rotatably connected to the second connecting member 55 so that the two third links 53 are rotatably connected.

[0025] In a preferred embodiment, the front end of the hip support rod 3 is bent downward to form a bent portion 31, and the angle α between the bent portion 31 and the horizontal plane is 178°-100°. In this embodiment, the front end of the hip support rod 3 tends to extend downward after it is completed, because the thigh is directly below the calf, and the thigh area is more comfortable in a sitting position.

[0026] The positions of "upper end", "lower end", "one end", "other end", "front end" and "rear end" in this application are not limited to the ends of the rod, but also include positions near the ends.

[0027] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A folding chair, comprising two front legs and two rear legs, wherein the upper ends of the front legs and the upper ends of the rear legs are rotatably connected to form a leg assembly, and the two leg assemblies are spaced apart from each other on the left and right; characterized in that, The two chair legs are connected to two hip support rods respectively. The two ends of the hip support rods extend into front and rear chair legs respectively. The hip support rods have two connecting parts that are rotatably connected to the front and rear chair legs respectively. The ends of the two hip support rods near the rear chair legs are rotatably connected to two back support rods respectively. The chair also includes a first connector and two second connecting rods that are rotatably connected to the first connector. The two second connecting rods are rotatably connected to the two back support rods respectively. The first connector or the two second connecting rods are rotatably connected to the upper ends of the two first connecting rods respectively. The lower ends of the two first connecting rods are rotatably connected to the two back support rods respectively.

2. The folding chair as described in claim 1, characterized in that, The two first links are arranged in a cross configuration and rotatably connected, or the two first links are arranged in parallel.

3. The folding chair as described in claim 1, characterized in that, The rear seat leg sleeve is provided with a first sliding sleeve that is slidably connected to the rear seat leg. The first sliding sleeve is rotatably connected to the hip support rod. The rear seat leg sleeve is provided with a limiting member that restricts the first sliding sleeve from sliding freely upward.

4. The folding chair as described in claim 1, characterized in that: It also includes two armrests, which are slidably mounted above the chair legs. The armrests have grooves at the bottom, and the chair legs are slidably connected to the grooves via pins. The rear ends of the two armrests are rotatably connected to the two back support rods.

5. The folding chair as described in claim 1, characterized in that: It also includes two third links, with the lower ends of the two first links rotatably connected to one end of each of the two third links, and the other ends of the two third links rotatably connected to the two back support rods.

6. The folding chair as described in claim 5, characterized in that: The two third links are rotatably connected.

7. The folding chair as described in claim 6, characterized in that: The two third links are rotatably connected, and the second connecting piece makes the two rotatably connected.

8. The folding chair as described in claim 1, characterized in that: The front end of the hip support bar is bent downward to form a bend, with the bend forming an angle of 178°-100° with the horizontal plane.

Images