Locking and self-unlocking mechanism for rotating part of office chair
By designing a locking self-unlocking mechanism including limit holes, limit rods, slide rods, springs and tooth blocks, the problem of office chair lacking self-unlocking structure is solved, automatic locking and unlocking is achieved, and the convenience of office chairs is improved and efficient.
Patent Information
- Application Number
- CN202421161462.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Most office chairs on the market lack self-unlocking structure, which causes users to manually unlock when adjusting their positions or leaving their seats, which increases the operating burden, especially for people with physical inconvenience.
A locking self-unlocking mechanism including a rear cover plate, a front cover plate, a limit hole, a limit rod, a slide rod, a spring, a rotating rod, a movable block, a left tooth block, a right tooth block and a limit block are designed, and the locking self-unlocking mechanism is designed, through The cooperation of the spring and the slider realizes automatic locking and unlocking of the movable block, avoiding the user's bent over.
It improves the efficiency and convenience of adjustment of office chairs, reduces user operation troubles, and makes office chairs more convenient in places where rotation control is required, such as feet, waist, back, headrests, armrests, etc.
Smart Images
Figure CN222323188U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locking and self-unlocking mechanisms, in particular to a locking and self-unlocking mechanism for a rotating part of an office chair. Background Art
[0002] Office chair swivels are components that connect the seat and base of an office chair, allowing the office chair to rotate on the base so that users can freely turn and adjust their posture in an office environment.
[0003] Since most office chairs on the market do not have a self-unlocking structure, office chairs without a self-unlocking structure may require users to manually unlock when they need to adjust their position or leave their seats, which increases the user's operating burden and limits the convenience and mobility of the chair. Users need to manually unlock the rotating parts of the office chair, which may require users to bend over or make other inconvenient movements, which may cause additional troubles, especially for some people with physical disabilities. Utility Model Content
[0004] The purpose of the utility model is to solve the technical problems raised in the above background technology.
[0005] The utility model adopts the following technical scheme: a locking and self-unlocking mechanism for a rotating part of an office chair, comprising a rear cover plate and a front cover plate, a limiting hole is provided on the surface of the rear cover plate, a limiting rod is fixedly installed on the surface of the front cover plate, a limiting groove is provided on the surface of the front cover plate, a sliding rod is arranged inside the rear cover plate, a spring is sleeved on the surface of the sliding rod, a rotating rod is fixedly installed on the surface of the sliding rod, a movable block is rotatably connected to the surface of the rotating rod, a left tooth block and a right tooth block are fixedly installed on the surface of the movable block, a rotating block is rotatably connected to the inside of the rear cover plate, and a limiting block is fixedly installed on the surface of the rotating block.
[0006] Preferably, the limiting rod is slidably connected to the limiting hole. Here, the design of the limiting rod and the limiting hole facilitates the installation of the front cover plate and the rear cover plate.
[0007] Preferably, one end of the spring is connected to the inner surface of the rear cover plate, and the other end is connected to the surface of the rotating rod. Here, the design of the spring plays an effect of driving the sliding rod, the rotating rod and the movable block to move.
[0008] Preferably, the movable block is slidably connected to the limiting groove. Here, the sliding design of the movable block and the limiting groove has the effect of limiting the movable block when the movable block moves.
[0009] Preferably, the left and right gear blocks are meshed with the rotating block. Here, the meshing design of the left and right gear blocks and the rotating block achieves the effect of automatic locking and unlocking in forward and reverse directions through the swing of the movable block.
[0010] Preferably, the number of the limit blocks is two groups, and the two groups of limit blocks are symmetrically distributed on the surface of the rotating block. Here, the symmetrical design of the limit blocks has the effect of limiting the position of the rotating block when the rotating block rotates.
[0011] Compared with the prior art, the advantages and positive effects of the utility model are:
[0012] In the utility model, by arranging the spring, the sliding rod, the movable block, the left tooth block, the right tooth block, the rotating block and the limit block, the effect of the left tooth block and the right tooth block can only be positioned on two sides is achieved through the spring and the middle sliding rod, and the effect of automatic locking and unlocking in the forward and reverse directions is achieved through the swing of the left tooth block and the right tooth block, thereby avoiding the need for the user to bend over or make other inconvenient movements due to the lack of self-locking and unlocking functions of the seat, improving the efficiency and convenience of adjusting the seat, and can be used for office chair footrests, waist supports, backs, headrests, armrests and other places that require rotation control. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a locking and self-unlocking mechanism for a rotating part of an office chair;
[0014] Figure 2 The utility model provides an exploded structural schematic diagram of a front cover plate, a movable block and a rotating block in a locking and unlocking mechanism for a rotating part of an office chair.
[0015] Legend:
[0016] 1. Rear cover; 2. Front cover; 3. Limit hole; 4. Limit rod; 5. Limit slot; 6. Sliding rod; 7. Spring; 8. Turn rod; 9. Movable block; 10. Left gear block; 11. Right gear block; 12. Turn block; 13. Limit block. DETAILED DESCRIPTION
[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.
[0019] Example
[0020] See also Figure 1-2The utility model provides a technical solution: a locking and self-unlocking mechanism for a rotating part of an office chair, comprising a rear cover plate 1 and a front cover plate 2, a limiting hole 3 is provided on the surface of the rear cover plate 1, a limiting rod 4 is fixedly installed on the surface of the front cover plate 2, the limiting rod 4 is slidably connected to the limiting hole 3, and the design of the limiting rod 4 and the limiting hole 3 facilitates the installation of the front cover plate 2 and the rear cover plate 1, a limiting groove 5 is provided on the surface of the front cover plate 2, a sliding rod 6 is arranged inside the rear cover plate 1, a spring 7 is sleeved on the surface of the sliding rod 6, one end of the spring 7 is connected to the inner surface of the rear cover plate 1, and the other end is connected to the surface of the rotating rod 8, the design of the spring 7 drives the sliding rod 6, the rotating rod 8 and the movable block 9 to move, the rotating rod 8 is fixedly installed on the surface of the sliding rod 6, and the surface of the rotating rod 8 is rotatably connected to the movable block 9 Block 9, the movable block 9 is slidably connected with the limit groove 5, the sliding design of the movable block 9 and the limit groove 5 has the effect of limiting the movable block 9 when the movable block 9 moves, the surface of the movable block 9 is fixedly installed with a left tooth block 10 and a right tooth block 11, the rear cover plate 1 is internally rotatably connected with a rotating block 12, the left tooth block 10 and the right tooth block 11 are meshed with the rotating block 12, and the meshing design of the left tooth block 10 and the right tooth block 11 and the rotating block 12 has the effect of realizing automatic locking and unlocking in forward and reverse directions through the swing of the movable block 9, and the surface of the rotating block 12 is fixedly installed with a limit block 13, the number of the limit blocks 13 is two groups, and the two groups of limit blocks 13 are symmetrically distributed on the surface of the rotating block 12, and the symmetrical design of the limit blocks 13 has the effect of limiting the rotating block 12 when the rotating block 12 rotates.
[0021] Working principle: Figure 2 The transfer block 12 and the movable block 9 can only rotate clockwise and cannot rotate counterclockwise. When the transfer block 12 rotates to a certain position, the limit block 13 will push the left tooth block 10 to the other side and drive the movable block 9 to rotate on the rotating rod 8. While the movable block 9 rotates, it will also be moved toward the transfer block 12 by the elastic force of the spring 7. After the right tooth block 11 on the movable block 9 is engaged with the transfer block 12, the transfer block 12 can only rotate counterclockwise and cannot rotate clockwise. The spring 7, the slide bar 6, the movable block 9, the left tooth block 10, and the right tooth block 11 , the rotating block 12 and the limit block 13 achieve the effect of the left tooth block 10 and the right tooth block 11 being able to be positioned only on both sides through the spring 7 and the middle slide rod 6, and then the swing of the left tooth block 10 and the right tooth block 11 achieves the effect of automatic locking and unlocking in the forward and reverse directions, thereby avoiding the need for the user to bend over or make other inconvenient movements due to the lack of self-locking and unlocking functions of the seat, improving the efficiency and convenience of adjusting the seat, and can be used for office chair footrests, lumbar supports, backs, headrests, armrests and other places that require rotation control.
[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A locking and self-unlocking mechanism for a rotating part of an office chair, comprising a rear cover plate (1) and a front cover plate (2), characterized in that: A limiting hole (3) is provided on the surface of the rear cover plate (1), a limiting rod (4) is fixedly installed on the surface of the front cover plate (2), a limiting groove (5) is provided on the surface of the front cover plate (2), a sliding rod (6) is arranged inside the rear cover plate (1), a spring (7) is sleeved on the surface of the sliding rod (6), a rotating rod (8) is fixedly installed on the surface of the sliding rod (6), a movable block (9) is rotatably connected to the surface of the rotating rod (8), a left tooth block (10) and a right tooth block (11) are fixedly installed on the surface of the movable block (9), a rotating block (12) is rotatably connected to the inside of the rear cover plate (1), and a limiting block (13) is fixedly installed on the surface of the rotating block (12).
2. The locking and self-unlocking mechanism for the rotating part of an office chair according to claim 1, characterized in that: The limiting rod (4) is slidably connected to the limiting hole (3).
3. The locking and self-unlocking mechanism for the rotating part of an office chair according to claim 1, characterized in that: One end of the spring (7) is connected to the inner surface of the rear cover plate (1), and the other end is connected to the surface of the rotating rod (8).
4. The locking and self-unlocking mechanism for the rotating part of an office chair according to claim 1, characterized in that: The movable block (9) is slidably connected to the limiting groove (5).
5. The locking and self-unlocking mechanism for the rotating part of an office chair according to claim 1, characterized in that: The left gear block (10) and the right gear block (11) are meshed with the rotating block (12).
6. The locking and self-unlocking mechanism for the rotating part of an office chair according to claim 1, characterized in that: The number of the limit blocks (13) is two groups, and the two groups of limit blocks (13) are symmetrically distributed on the surface of the rotating block (12).