Seat capable of preventing backward leaning and toppling
By installing a support crossbar and support column at the bottom of the seat back, the problem of the seat tilting backward is solved, improving the stability and safety of the seat, and also providing convenient storage.
Patent Information
- Application Number
- CN202520189116.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-07
AI Technical Summary
Existing seats are prone to damage and pose safety hazards when users recline, especially when the user tilts back at an excessive angle or has too much inertia, which can lead to user injury.
An anti-tipping mechanism, including a support crossbar and a support column, is installed at the bottom of the back of the seat body to form a triangular support. The locking mechanism and the adjustable support column provide stable support to prevent the seat from tilting backward.
It improves the stability and safety of the seat, prevents it from tilting backward, reduces the risk of seat damage and user injury, and is easy to store and transport.
Smart Images
Figure CN223929794U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat technology, and in particular to a seat that prevents backward tilting. Background Technology
[0002] Chairs are a common household tool that provides support, allowing users to sit comfortably and relieve physical fatigue. Common chairs generally consist of a seat and support legs, and some chairs are also equipped with a backrest to support the user's back and improve comfort.
[0003] In existing technologies, the stability of chairs is not high. Users need to maintain a proper sitting posture when using the chair. If the user leans back at too large an angle or the inertia when sitting down is too great, the chair is prone to tilting backward, causing the user and the chair to tilt backward together. This not only easily damages the chair, but also causes injury to the user due to improper use, affecting the safety of the chair. Therefore, a chair that prevents backward tilting is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a seat that prevents backward tilting, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a seat that prevents backward tilting, comprising a seat body, wherein an anti-tipping mechanism is provided at the bottom of the back of the seat body to prevent the seat body from tilting backward, the anti-tipping mechanism comprising:
[0006] A support crossbar is provided at the bottom of the back of the seat body;
[0007] The support column has its bottom connected to the end of the support crossbar away from the seat body, and its top connected to the middle of the back of the seat body.
[0008] Preferably, the support column includes:
[0009] A supporting vertical rod, wherein the supporting vertical rod is a hollow tubular body with one end connected, and the bottom of the supporting vertical rod is hinged to the end of the supporting horizontal rod;
[0010] A connecting rod, the outer wall of which is slidably connected to the inner wall of the supporting vertical rod, and the top of which is hinged to the middle of the back of the seat body;
[0011] A locking mechanism is provided at the end of the supporting vertical rod near the connecting rod, and the locking mechanism is used to lock the position between the supporting vertical rod and the connecting rod.
[0012] Preferably, a support spring is fixedly connected to the bottom of the inner cavity of the support vertical rod, and one end of the support spring is fixed to the bottom end of the connecting rod.
[0013] Preferably, the locking mechanism includes:
[0014] The snap-fit post has a snap-fit slot at the top of the outer wall of the support vertical rod, and the snap-fit post is movably disposed inside the snap-fit slot.
[0015] A locking slot is formed at the bottom of the outer wall of the connecting rod, and the height of the locking slot matches the diameter of the locking post.
[0016] Preferably, one end of the snap-fit post extends to the back of the support vertical rod and is rotatably connected to a hinge shaft. Both ends of the hinge shaft are rotatably connected to fixing members, and the outer wall of the fixing member is fixedly connected to the back of the support vertical rod.
[0017] Preferably, the other end of the snap-fit post extends to the front of the support vertical rod and is movably connected to a pressure plate. A positioning protrusion is fixedly connected to the side of the pressure plate facing the support vertical rod. A limiting groove matching the positioning protrusion is opened at the corresponding position of the outer wall of the support vertical rod and the pressure plate. An elastic element is provided between the pressure plate and the snap-fit post.
[0018] Preferably, the elastic element includes:
[0019] The limiting slide plate has a telescopic groove on the side of the locking post facing the pressure plate. The limiting slide plate is slidably connected to the inside of the telescopic groove. One end of the pressure plate extends into the telescopic groove and is fixedly connected to the outer wall of the limiting slide plate.
[0020] A reset spring is fixedly disposed between the limiting slide plate and the inner wall of the telescopic groove.
[0021] Preferably, the seat body includes:
[0022] A seat plate, the back of which is hinged to the top of a connecting rod;
[0023] The support legs are four in number and fixedly connected in a matrix to the bottom corner of the seat. One end of the support crossbar is hinged to the bottom of the corresponding support leg.
[0024] The backrest is fixedly connected to the top of the seat near the anti-tipping mechanism.
[0025] Compared with the prior art, the technical effects of this utility model are as follows:
[0026] This invention adds an anti-tipping mechanism to the bottom of the back of the seat body. The support crossbar and support column in the anti-tipping mechanism are combined with the seat body to form a triangular support, which can provide stable support to the bottom of the back of the seat body, achieve the function of preventing backward tilting, and prevent the seat body from tilting backward, thereby improving the safety of the user. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0028] Figure 2 This is a side view of the present invention.
[0029] Figure 3 This is a three-dimensional semi-structural schematic diagram of the supporting vertical rod of this utility model.
[0030] Figure 4 This is a three-dimensional half-sectional view of the snap-fit post of this utility model.
[0031] In the diagram: 100, Seat body; 101, Seat plate; 102, Support leg; 103, Backrest; 300, Anti-tipping mechanism; 301, Support crossbar; 302, Support vertical bar; 303, Connecting rod; 304, Snap-fit slot; 305, Locking slot; 306, Snap-fit post; 307, Hinge shaft; 308, Fixing component; 309, Telescopic groove; 310, Limiting slide plate; 311, Return spring; 312, Pressure plate; 313, Positioning protrusion; 314, Support spring. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] This utility model provides, for example Figures 1-4 The image shows a type of seat designed to prevent backward tilting.
[0034] Example 1: A seat body 100 is included. An anti-tipping mechanism 300 is provided at the bottom of the back of the seat body 100 to prevent it from tilting backward. The anti-tipping mechanism 300 includes a support crossbar 301 and a support column. The support crossbar 301 is located at the bottom of the back of the seat body 100. The bottom of the support column is connected to the end of the support crossbar 301 facing away from the seat body 100, and the top of the support column is connected to the middle of the back of the seat body 100. By providing the anti-tipping mechanism 300 at the bottom of the back of the seat body 100, preferably with two symmetrically arranged anti-tipping mechanisms 300, it is possible to... An auxiliary support is formed at the bottom of the back of the seat body 100 to enhance the support strength of the bottom of the back of the seat body 100, making it difficult for the seat body 100 to tilt backward, thereby achieving the protection against the backward tilting of the seat body 100 and improving the safety of the seat body 100 when used by the user; the anti-tilting mechanism 300 is formed by the combination of the support crossbar 301 and the support column to form an acute angle, which, together with the back of the seat body 100, forms an acute triangle, which helps to improve the blocking effect on the bottom of the back of the seat body 100, making the seat body 100 more stable when placed on the ground.
[0035] The support column includes a support vertical rod 302, a connecting rod 303, and a locking mechanism. The support vertical rod 302 is a hollow tubular body with one end open. The bottom of the support vertical rod 302 is hinged to the end of the support horizontal rod 301. The outer wall of the connecting rod 303 is slidably connected to the inner wall of the support vertical rod 302. The top of the connecting rod 303 is hinged to the middle of the back of the seat body 100. The locking mechanism is located at the end of the support vertical rod 302 near the connecting rod 303. The locking mechanism is used to lock the position between the support vertical rod 302 and the connecting rod 303. By setting the support column as a split mechanism composed of the support vertical rod 302, the connecting rod 303, and the locking mechanism, the support column has a telescopic function. In this way, when the anti-tipping mechanism 300 is not needed, it can be stored away, reducing the overall space occupied by the seat body 100 and facilitating the storage, handling, and transportation of the seat body 100.
[0036] The seat body 100 includes a seat 101, support legs 102, and a backrest 103. The back of the seat 101 is hinged to the top of the connecting rod 303. There are four support legs 102, which are fixedly connected in a matrix to the bottom corners of the seat 101. One end of the support crossbar 301 is hinged to the bottom of the corresponding support leg 102. The backrest 103 is fixedly connected to the top of the seat 101 near the anti-tipping mechanism 300. Adding a backrest 103 to the seat 101 can increase the user's comfort. At the same time, the four support legs 102 can enhance the stability of the support. In other embodiments, a crossbar can be added between two adjacent support legs 102 to improve the stability between the four support legs 102.
[0037] Furthermore, the locking mechanism includes a snap-fit post 306 and a locking slot 305. A snap-fit slot 304 is formed on the top of the outer wall of the supporting vertical rod 302. The snap-fit post 306 is movably disposed inside the snap-fit slot 304. The locking slot 305 is formed at the bottom of the outer wall of the connecting rod 303. The height of the locking slot 305 matches the diameter of the snap-fit post 306. One end of the snap-fit post 306 extends to the back of the supporting vertical rod 302 and is rotatably connected to a hinge shaft 307. Both ends of the hinge shaft 307 are rotatably connected to fixing members 308. The outer wall of the fixing member 308 is fixedly connected to the back of the supporting vertical rod 302. The other end of the column 306 extends to the front of the supporting vertical rod 302 and is movably connected to a pressure plate 312. A positioning protrusion 313 is fixedly connected to the side of the pressure plate 312 facing the supporting vertical rod 302. A limiting groove matching the positioning protrusion 313 is provided at the corresponding position of the pressure plate 312 on the outer wall of the supporting vertical rod 302. An elastic element is provided between the pressure plate 312 and the locking column 306. When the supporting vertical rod 302 and the connecting rod 303 are in the unfolded state, the locking column 306 is engaged in the locking slot 305 position, limiting and supporting the connecting rod 303, thereby realizing the connection between the supporting vertical rod 302 and the connecting rod 303. The locking position between the rods 303 prevents the connecting rod 303 from extending or retracting on the supporting vertical rod 302. To unlock, simply pull the pressure plate 312 outwards manually, causing the positioning protrusion 313 to be pulled out of the limiting groove on the outer wall of the supporting vertical rod 302, thus unlocking the limiting position between the locking pin 306 and the supporting vertical rod 302. Then, move the locking pin 306 to rotate around the hinge axis 307. The locking pin 306 will then be pulled out of the locking slot 304 by rotation, allowing it to be pulled out of the locking slot 305 and releasing the connecting rod 303. The locking between the support rod 302 and the vertical support rod 302 allows the connecting rod 303 to retract into the inner cavity of the vertical support rod 302, making the length of the support column adjustable. Combined with the hinges at both ends of the support column and the two ends of the support crossbar 301, the support crossbar 301 and the support column can be rotated and folded. This allows the support crossbar 301 and the support column to be rotated to a vertically upward position and fitted against the back of the seat body 100, achieving the folding and storage of the anti-tipping mechanism 300. This allows the anti-tipping mechanism 300 to be stored when not in use, thereby improving the adaptability of the anti-tipping mechanism 300.
[0038] The elastic element includes a limiting slide plate 310 and a return spring 311. A telescopic groove 309 is provided on the side of the locking post 306 facing the pressure plate 312. The limiting slide plate 310 is slidably connected to the inside of the telescopic groove 309. One end of the pressure plate 312 extends into the telescopic groove 309 and is fixedly connected to the outer wall of the limiting slide plate 310. The return spring 311 is fixedly set between the limiting slide plate 310 and the inner wall of the telescopic groove 309. The limiting slide plate 310 provides support to the return spring 311 by sliding in the telescopic groove 309. When the pressure plate 312 moves, the limiting slide plate 310 can drive the return spring 311 to compress and deform. In this way, the return spring 311 can provide elastic thrust for the return of the limiting slide plate 310, so that the positioning protrusion 313 can be automatically inserted into the limiting groove on the outer wall of the support vertical rod 302, improving the convenience of use.
[0039] Example 2: Based on Example 1, a support spring 314 is fixedly connected to the bottom of the inner cavity of the support vertical rod 302. One end of the support spring 314 is fixed to the bottom end of the connecting rod 303. By setting the support spring 314 in the inner cavity of the support vertical rod 302 to provide auxiliary support for the connecting rod 303, the support vertical rod 302 can automatically extend and unfold when in use, improving the convenience of operation.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A seat designed to prevent backward tilting, comprising a seat body (100), characterized in that, The bottom of the back of the seat body (100) is provided with an anti-tipping mechanism (300) to prevent the seat body (100) from tilting backward. The anti-tipping mechanism (300) includes: A support crossbar (301) is provided at the bottom of the back of the seat body (100); The support column has its bottom connected to the end of the support crossbar (301) away from the seat body (100), and its top connected to the middle of the back of the seat body (100). The support column includes: A supporting vertical rod (302) is a hollow tubular body with one end connected, and the bottom of the supporting vertical rod (302) is hinged to the end of the supporting horizontal rod (301). A connecting rod (303) is slidably connected to the inner wall of the supporting vertical rod (302), and the top of the connecting rod (303) is hinged to the middle of the back of the seat body (100). A locking mechanism is provided at the end of the supporting vertical rod (302) near the connecting rod (303), and the locking mechanism is used to lock the position between the supporting vertical rod (302) and the connecting rod (303); The locking mechanism includes: The snap-fit post (306) has a snap-fit slot (304) on the top of the outer wall of the supporting vertical rod (302), and the snap-fit post (306) is movably disposed inside the snap-fit slot (304); A locking slot (305) is provided at the bottom of the outer wall of the connecting rod (303). The height of the locking slot (305) matches the diameter of the snap-fit post (306). The other end of the snap-fit post (306) extends to the front of the supporting vertical rod (302) and is movably connected to a pressure plate (312). A positioning protrusion (313) is fixedly connected to the side of the pressure plate (312) facing the supporting vertical rod (302). A limiting groove matching the positioning protrusion (313) is provided at the corresponding position of the outer wall of the supporting vertical rod (302). An elastic element is provided between the pressure plate (312) and the snap-fit post (306).
2. The anti-tipping seat according to claim 1, characterized in that, A support spring (314) is fixedly connected to the bottom of the inner cavity of the support rod (302), and one end of the support spring (314) is fixed to the bottom end of the connecting rod (303).
3. The anti-tipping seat according to claim 2, characterized in that, One end of the snap-fit post (306) extends to the back of the support rod (302) and is rotatably connected to the hinge shaft (307). Both ends of the hinge shaft (307) are rotatably connected to the fixing member (308), and the outer wall of the fixing member (308) is fixedly connected to the back of the support rod (302).
4. The anti-tipping seat according to claim 3, characterized in that, The elastic element includes: The limiting slide plate (310) has a telescopic groove (309) on the side of the locking post (306) facing the pressure plate (312). The limiting slide plate (310) is slidably connected to the inside of the telescopic groove (309). One end of the pressure plate (312) extends into the telescopic groove (309) and is fixedly connected to the outer wall of the limiting slide plate (310). A reset spring (311) is fixedly disposed between the limiting slide plate (310) and the inner wall of the telescopic groove (309).
5. A seat designed to prevent backward tilting according to claim 4, characterized in that, The seat body (100) includes: Seat plate (101), the back of which is hinged to the top of connecting rod (303); Support legs (102), the four support legs (102) are fixedly connected in a matrix to the bottom corner of the seat plate (101), and one end of the support crossbar (301) is hinged to the bottom of the support leg (102) at the corresponding position; Backrest (103), which is fixedly connected to the top of the seat (101) on the side near the anti-tipping mechanism (300).