Outdoor Anti-breakage chair

By introducing an elastic buffer structure and support foot design into the outdoor folding chair, the problem of easy breakage of the chair legs is solved, achieving a longer service life and safety.

WO2025200384A1PCT designated stage Publication Date: 2025-10-02HAIYAN HUITONG INTELLIGENT FURNITURE CO LTD
View PDF 5 Cites 0 Cited by

Patent Information

Application Number
PCT/CN2024/125295
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-03-27
Filing Date
2024-10-16
Publication Date
2025-10-02

AI Technical Summary

Technical Problem

The legs of existing outdoor folding chairs are prone to breakage when subjected to high pressure, resulting in insufficient stability and service life.

Method used

Elastic parts are used to buffer and release the rigid force of the chair legs. The combined structure of the positioning seat, buffer seat and spring reduces the rigid force transmission of the chair legs. An inner chamber and a piston rod structure are provided in the chair legs. The support shaft contacts the ground, the support feet improve stability, and a buffer elastic part is provided on the panel to share the pressure.

Benefits of technology

Effectively reduce the risk of chair leg breakage, improve the service life and stability of outdoor chairs, and enhance the overall structural strength and safety of the chair.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN2024125295_02102025_PF_FP_ABST
    Figure CN2024125295_02102025_PF_FP_ABST
Patent Text Reader

Abstract

Disclosed in the present utility model is an outdoor anti-breakage chair, comprising a chair frame (1), wherein chair legs (2) and a panel (3) are provided in the chair frame (1). The inside of each chair leg (2) is provided with an inner cavity (4); a fixing seat (5) is provided in the inner cavity (4); a positioning seat (6) is provided on the fixing seat (5); a piston rod (7) is provided on one end of the positioning seat (6); a buffer seat (8) is provided on one end of the piston rod (7); a cylindrical rod (9) is provided on one end of the buffer seat (8), the piston rod (7) being embedded in the cylindrical rod (9); a spring (10) is provided between the positioning seat (6) and the buffer seat (8); one end of said chair leg (2) is provided with a limiting hole (11); and the other end of the buffer seat (8) is provided with a supporting shaft member (12) that passes through the limiting hole (11). The present utility model utilizes elastic members to buffer and release rigid forces on the chair legs, thereby reducing the risk of the chair legs breaking easily when subjected to heavy weight, prolonging the service life of the outdoor chair.
Need to check novelty before this filing date? Find Prior Art

Description

Outdoor anti-breakage chair Technical Field

[0001] The utility model relates to the technical field of portable chairs, in particular to an outdoor anti-fracture chair. Background Art

[0002] Outdoor folding chairs are common and frequently used items in daily life. Conventional folding chairs, such as those disclosed in publication number CN211459481U, include a backrest and a seat. A first hinge axis is fixed to the middle of each side of the seat, and front legs are mounted on the first hinge axis. The top ends of the front legs are hinged to the top ends of the rear legs via a second hinge axis. Longitudinal slots are provided from the middle to the bottom of the rear legs. Axles are fixed to the rear ends of each side of the seat, and the shafts are positioned within the corresponding slots. A backrest is mounted between the top ends of the front legs. Due to the structural design of the folding chair, stability is relatively low. Furthermore, the legs of such folding chairs are rigid and may deform significantly or even break when subjected to certain pressures, reducing the safety and stability of the folding chair.

[0003] Utility Model Content

[0004] The purpose of the present invention is to provide an outdoor anti-fracture chair. The present invention can use elastic members to buffer and release the rigid force exerted on the chair legs, thereby reducing the risk of the chair legs being easily broken when bearing heavy weight and extending the service life of the outdoor chair.

[0005] The technical solution of the utility model is as follows: an outdoor anti-breakage chair, comprising a chair frame, which is provided with chair legs and a panel; an inner chamber is provided in the chair legs, a fixing seat is provided in the inner chamber, a positioning seat is provided on the fixing seat, and a piston rod is provided at one end of the positioning seat; a buffer seat is provided at one end of the piston rod, a cylindrical rod is provided at one end of the buffer seat, the piston rod is embedded in the cylindrical rod, and a spring is provided between the positioning seat and the buffer seat; a limiting hole is provided at one end of the chair leg, and a supporting shaft is provided at the other end of the buffer seat that passes through the limiting hole.

[0006] In the above-mentioned outdoor anti-breakage chair, there are two fixing seats, and the fixing seats are symmetrically arranged. One end of the positioning seat is arranged between the two fixing seats, and the fixing seat is connected to the positioning seat via a bolt.

[0007] In the aforementioned outdoor anti-fracture chair, a rotating shaft is provided at the end of the supporting shaft via a bearing, and a supporting foot is provided on the rotating shaft.

[0008] In the aforementioned outdoor anti-breakage chair, the bottom of the supporting legs has an anti-slip strip.

[0009] In the aforementioned outdoor anti-fracture chair, the panel is provided with an inner groove, a plurality of buffer elastic members are evenly arranged in the inner groove, and a seat plate is provided at the upper end of the buffer elastic member.

[0010] In the aforementioned outdoor anti-fracture chair, the panel is provided with a flow guide groove connected to the inner groove, and the flow guide groove is a penetrating structure arranged on the panel.

[0011] In the aforementioned outdoor anti-break chair, a first slide groove and a second slide groove are provided on the inner side surface of the chair frame, a first slide column embedded in the first slide groove is provided on the side surface of the panel, and a second slide column embedded in the second slide groove is provided on the side of the chair leg; the chair leg and the panel are hinged to each other; and a locking groove for clamping the supporting foot is provided on the inner side of the end of the chair frame.

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

[0013] 1. In the present invention, the bottom end of the chair frame and the chair legs are in contact with the ground. When pressure is applied to the panel, the force will be transmitted to the chair legs, the spring between the positioning seat and the buffer seat will be compressed, the piston rod will slide in the cylindrical rod, and the supporting shaft will come into contact with the ground, buffering and releasing the rigid force applied to the chair legs, reducing the risk of the chair legs breaking when bearing heavy weight, and increasing the service life of the outdoor chair.

[0014] 2. A support foot is provided at the end of the support shaft for rotation, which can stabilize the chair legs and improve the stability of the chair legs.

[0015] 3. A seat with a buffer elastic member is provided on the panel, and the buffer elastic member is used to release part of the pressure applied to the seat, thereby sharing part of the pressure for the buffer members on the chair legs.

[0016] BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a schematic diagram of a spring;

[0019] FIG3 is a schematic diagram of a first chute;

[0020] Figure 4 is a schematic diagram of the seat;

[0021] FIG5 is a schematic diagram of a buffer elastic member.

[0022] Explanation of the marks in the accompanying drawings: 1-chair frame, 2-chair legs, 3-panel, 4-inner chamber, 5-fixed seat, 6-positioning seat, 7-piston rod, 8-buffer seat, 9-cylindrical rod, 10-spring, 11-limiting hole, 12-support shaft, 13-rotating shaft, 14-support foot, 15-inner groove, 16-buffer elastic member, 17-seat, 18-flow guide groove, 19-first slide groove, 20-second slide groove, 21-first slide column, 22-second slide column, 23-engaging groove.

[0023] DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0025] Embodiment: An outdoor anti-break chair includes a chair frame 1, as shown in Figure 1, chair legs 2 and a panel 3 are installed on the chair frame 1. The chair frame is the main structure of the entire chair, supporting the chair legs 2 and the panel 3. The main body is a rectangular frame structure, and the bottom end of the chair frame plays a supporting role. Secondly, the chair legs 2 play a supporting role for the panel. The chair legs are a support rod structure, and the panel is a plate structure. The user can sit on its plane; the chair legs 2 have an inner chamber 4, and a fixing seat 5 is installed in the inner chamber 4. The fixing seat 5 is connected to a positioning seat 6. The fixing seat 5 has two, and the fixing seats 5 are symmetrically arranged. One end of the positioning seat 6 is arranged between the two fixing seats 5, and the fixing seat 5 is connected to the positioning seat 6 by a bolt. The fixing seat and the positioning seat are connected by bolts to facilitate the disassembly and installation of the two components. A piston rod 7 is fixed to one end of the positioning seat 6. A buffer seat 8 is installed at one end of the piston rod 7. A cylindrical rod 9 is fixed to one end of the buffer seat 8. The piston rod 7 is embedded in the cylindrical rod 9. A spring 10 is connected between the positioning seat 6 and the buffer seat 8. As shown in Figure 2, when the chair leg is under pressure, the spring will be compressed and deformed, and the piston rod will move accordingly in the cylindrical rod. The chair leg 2 has a limiting hole 11 at one end, and the buffer seat 8 has a support shaft 12 passing through the limiting hole 11 at the other end. The limiting hole can support the support shaft, and the support shaft will contact the ground. The end of the support shaft 12 is passed through a bearing with a rotating shaft 13. The rotating shaft 13 has a support foot 14. The bottom of the support foot 14 has an anti-slip strip. The support foot can ensure that the support shaft is stably placed on the ground, improving the overall stability of the chair.

[0026] The panel 3 has an inner groove 15. As shown in Figures 4 and 5, multiple elastic buffer members 16 are evenly mounted within the inner groove 15. The upper ends of the elastic buffer members 16 are connected to a seat plate 17. The elastic buffer members 16 partially relieve the pressure applied to the seat plate, thereby relieving some of the pressure from the cushioning members on the chair legs. In this embodiment, the elastic buffer members are springs. The panel 3 has a flow channel 18 connected to the inner groove 15. The flow channel 18 is a penetrating structure provided on the panel 3. If water accumulates in the inner groove, it can be drained through the flow channel, maintaining a clean and hygienic inner groove.

[0027] The inner side surface of the chair frame 1 is provided with a first slide groove 19 and a second slide groove 20. As shown in Figure 3, a first slide column 21 embedded in the first slide groove 19 is fixed to the side surface of the panel 3, and a second slide column 22 embedded in the second slide groove 20 is provided on the side of the chair leg 2; the chair leg 2 and the panel 3 are hinged to each other; the inner side of the end of the chair frame 1 is provided with a snap-fit ​​groove 23 for clamping the support foot 14, and the chair leg and the panel are hinged to each other. When the panel and the chair leg are laid flat, the first slide column on the side of the panel moves along the first slide groove, so that the panel is parallel to the chair frame. Similarly, the chair leg is parallel to the chair frame. The snap-fit ​​groove is used to place the support foot, so that the entire chair can be folded for easy storage.

[0028] The working principle of the present invention is as follows: the bottom end of the chair frame contacts the ground with the chair legs. When pressure is applied to the panel, the force will be transmitted to the chair legs, the spring between the positioning seat and the buffer seat will be compressed, the piston rod will slide in the cylindrical rod, and the supporting shaft will contact the ground, thereby buffering and releasing the rigid force applied to the chair legs, reducing the risk of the chair legs breaking when bearing heavy weight, and increasing the service life of the outdoor chair; secondly, a buffering elastic part is provided at the lower part of the seat panel, which releases part of the pressure applied to the seat panel through the buffering elastic part, thereby sharing part of the pressure for the buffer parts on the chair legs.

[0029]

Claims

1. An outdoor anti-breakage chair, comprising a chair frame (1), wherein the chair frame (1) is provided with chair legs (2) and a panel (3); characterized in that: The chair leg (2) is provided with an inner chamber (4), a fixing seat (5) is provided in the inner chamber (4), a positioning seat (6) is provided on the fixing seat (5), and a piston rod (7) is provided at one end of the positioning seat (6); a buffer seat (8) is provided at one end of the piston rod (7), a cylindrical rod (9) is provided at one end of the buffer seat (8), and the piston rod (7) is embedded in the cylindrical rod (9), and a spring (10) is provided between the positioning seat (6) and the buffer seat (8); one end of the chair leg (2) has a limiting hole (11), and the other end of the buffer seat (8) is provided with a supporting shaft (12) passing through the limiting hole (11).

2. The outdoor anti-breakage chair according to claim 1, characterized in that: There are two fixing seats (5), and the fixing seats (5) are symmetrically arranged. One end of the positioning seat (6) is arranged between the two fixing seats (5), and the fixing seat (5) is connected to the positioning seat (6) via a bolt.

3. The outdoor anti-breakage chair according to claim 1, characterized in that: A rotating shaft (13) is provided at the end of the supporting shaft (12) via a bearing, and a supporting foot (14) is provided on the rotating shaft (13).

4. The outdoor anti-fracture chair according to claim 3, characterized in that: The bottom of the supporting foot (14) is provided with an anti-slip strip.

5. The outdoor anti-breakage chair according to claim 1, characterized in that: The panel (3) is provided with an inner groove (15), a plurality of buffer elastic members (16) are evenly arranged in the inner groove (15), and a seat plate (17) is provided at the upper end of the buffer elastic member (16).

6. The outdoor anti-breakage chair according to claim 5, characterized in that: The panel (3) is provided with a flow guide groove (18) connected to the inner groove (15), and the flow guide groove (18) is a penetrating structure provided on the panel (3).

7. The outdoor anti-breakage chair according to claim 3, characterized in that: The chair frame (1) is provided with a first slide groove (19) and a second slide groove (20) on the inner side surface, the side surface of the panel (3) is provided with a first slide column (21) embedded in the first slide groove (19), and the side of the chair leg (2) is provided with a second slide column (22) embedded in the second slide groove (20); the chair leg (2) and the panel (3) are hinged to each other; and the inner side of the end of the chair frame (3) is provided with a snap-fit ​​groove (23) for snapping the support foot (14).

Citation Information

Patent Citations

  • Folding chair

    CN202287200U

  • Folding chair

    CN216702064U

  • Folding metal chair capable of preventing folding fracture

    CN217610153U

  • Folding chair

    CN2279839Y

  • Folding chair with pneumatically height adjustable seat

    US20060017312A1