Backward leaning adjusting device of office chair
By incorporating a support plate, a bent rod, and a slider into the backrest adjustment mechanism of the office chair, the problem of insufficient support in existing office chair reclining adjustment mechanisms is solved, achieving stable reclining angle adjustment and fixation.
Patent Information
- Application Number
- CN202423115536.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing office chair reclining adjustment mechanisms are prone to insufficient support after prolonged use.
By contacting the support plate when the backrest is adjusted to its maximum angle, the design of the support plate, bent rod, and slider enhances the support of the backrest, and the angle adjustment and fixation are achieved through the cooperation of the locking teeth and springs.
The backrest provides enhanced support and prevents the adjustment cover from rotating, thus achieving stable adjustment and fixation of the reclining angle.
Smart Images
Figure CN223554552U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to office chair technical field especially relates to a back leaning adjustment device of office chair. BACKGROUND
[0002] Chair is indispensable in life, it can get a rest way in an environment, such as in family, in school, in company, everywhere can see, the chair used in office is called office chair, along with now economic rapid development, enterprise is more and more, the demand of office chair is also or more and more, office chair will be more valued by people.
[0003] Some office chair back leaning adjustment devices of prior art mostly adjust through back leaning adjustment rod or the connecting part of chair seat and chair back, the back leaning force is easy to concentrate on the connecting point, and the problem of insufficient support may appear after long time use. UTILITY MODEL CONTENT
[0004] In order to solve the problems in prior art, the utility model provides a back leaning adjustment device of office chair, which is in contact with the surface of the support plate when the backrest is adjusted to the maximum angle of back leaning, and the supportability of the backrest during use is enhanced by the arrangement of the support plate, the bent rod and the sliding block.
[0005] To achieve the above object, the utility model provides the following technical scheme: a back leaning adjustment device of office chair, including fixed plate, both ends of the fixed plate are fixedly connected with fixed frame respectively, the top end of the fixed plate is equipped with the seat plate, the opposite surface of two fixed frames is rotatably connected with the rotating rod, the surface of the rotating rod is fixedly connected with the backrest, the rotating rod is movably penetrated through the fixed frame, both ends of the rotating rod are fixedly connected with a plurality of first clamping teeth respectively, both ends of the rotating rod are respectively provided with round holes, the inside of the round hole is fixedly connected with the first spring, one end of the first spring is rotatably connected with the fixed column, the end away from the spring of the fixed column is fixedly connected with the adjusting cover, the end of the adjusting cover corresponding to the fixed column position is fixedly connected with a plurality of second clamping teeth, the surface of the fixed frame is provided with a plurality of limiting holes, the inside of the limiting hole is movably connected with the limiting rod, the end away from the limiting hole of a plurality of limiting rods is fixedly connected with the surface of the adjusting cover, the surface of the fixed frame is fixedly connected with the bent rod, the surface of the bent rod is movably sleeved with the sliding block, and the surface of the sliding block is movably connected with the backrest, one end of the sliding block is fixedly connected with the second spring, and the second spring is movably sleeved on the surface of the bent rod.
[0006] Further, one end of two bent rods is fixedly connected with the support plate, and one end of the support plate is fixedly connected with the surface of two fixed frames.
[0007] Further, the opposite surfaces of the sliding block and the supporting plate are provided with protective sleeves, and the protective sleeves are movably sleeved on the surfaces of the second springs, and the surface of the first clamping tooth is engaged with the surface of the second clamping tooth.
[0008] Compared with the prior art, the utility model has the beneficial effects that:
[0009] 1. By pulling the adjusting cover on both sides, the first clamping tooth is not engaged with the surface of the second clamping tooth through the movement of the adjusting cover, and the fixed column is moved to stretch the first spring, at this time, the angle of the backrest can be adjusted, when the backrest moves, the sliding block moves on the surface of the bent rod, and the second spring is pressed, when the backrest is adjusted to the maximum angle of the backrest, the surface of the supporting plate is contacted, through the arrangement of the supporting plate, the bent rod and the sliding block, the support of the backrest during use is enhanced.
[0010] 2. After adjusting to the appropriate angle, the adjusting cover is loosened, the fixed column is moved under the action of the first spring, the adjusting cover is fixed to move, so that the first clamping tooth is engaged with the surface of the second clamping tooth, the angle of the backrest is fixed, through the arrangement of the limiting rod, the adjusting rod can be limited, and the adjusting cover is prevented from rotating. BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1 It is a whole structure schematic view of the utility model.
[0012] Fig. 2 It is a structure sectional view of the adjusting cover of the utility model.
[0013] In the figure: 1, fixed plate; 2, fixed frame; 3, seat plate; 4, rotating rod; 5, backrest; 6, limiting rod; 7, adjusting cover; 8, first clamping tooth; 9, second clamping tooth; 10, round hole; 11, first spring; 12, fixed column; 13, bent rod; 14, second spring; 15, sliding block; 16, supporting plate. DETAILED DESCRIPTION
[0014] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.
[0015] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. Embodiment
[0016] Referring to the drawings Figs. 1-2 As shown in the drawings, a backrest adjusting device of an office chair comprises a fixed plate 1, both ends of the fixed plate 1 are fixedly connected with fixed frames 2, the top end of the fixed plate 1 is provided with a seat plate 3, the opposite surfaces of the two fixed frames 2 are rotatably connected with rotating rods 4, the surfaces of the rotating rods 4 are fixedly connected with backrests 5, the rotating rods 4 are movably penetrated through the fixed frames 2, both ends of the rotating rods 4 are fixedly connected with a plurality of first clamping teeth 8, both ends of the rotating rods 4 are provided with circular holes 10, the inside of the circular holes 10 is fixedly connected with first springs 11, one end of the first springs 11 is rotatably connected with fixed columns 12, the end of the fixed columns 12 away from the springs is fixedly connected with adjusting covers 7, one end of the adjusting covers 7 corresponding to the positions of the fixed columns 12 is fixedly connected with a plurality of second clamping teeth 9, the surface of the fixed frame 2 is provided with a plurality of limiting holes, the inside of the limiting holes is movably connected with limiting rods 6, the ends of the plurality of limiting rods 6 away from the limiting holes are fixedly connected with the surface of the adjusting cover 7, the surface of the fixed frame 2 is fixedly connected with bent rods 13, the surface of the bent rods 13 movably sleeved with sliding blocks 15, and the surface of the sliding blocks 15 is movably connected with the surface of the backrest 5, one end of the sliding block 15 is fixedly connected with second springs 14, and the second springs 14 are movably sleeved on the surface of the bent rod 13.
[0017] One end of the two bent rods 13 is fixedly connected with support plates 16, and one end of the support plate 16 is fixedly connected with the surface of the two fixed frames 2.
[0018] The opposite surfaces of the sliding block 15 and the support plate 16 are provided with protective sleeves, the protective sleeves are movably sleeved on the surface of the second spring 14, and the surface of the first clamping tooth 8 is engaged with the surface of the second clamping tooth 9.
[0019] Working principle: when the backrest 5 needs to be adjusted, pull the adjusting cover 7 on both sides, through the movement of the adjusting cover 7, the first clamping tooth 8 is not in engagement with the surface of the second clamping tooth 9, at the same time, the fixed column 12 is moved to stretch the first spring 11, at this time, the angle of the backrest 5 can be adjusted, when the backrest 5 moves, the sliding block 15 moves on the surface of the bent rod 13, at the same time, the second spring 14 is pressed, when the backrest 5 is adjusted to the maximum angle of backward inclination, it will contact the surface of the supporting plate 16, through the setting of the supporting plate 16, the bent rod 13 and the sliding block 15, the support of the backrest 5 during use is enhanced, after adjusting to the appropriate angle, release the adjusting cover 7, under the action of the first spring 11, the fixed column 12 is moved to fix the movement of the adjusting cover 7, so that the first clamping tooth 8 is engaged with the surface of the second clamping tooth 9, the angle of the backrest 5 is fixed, through the setting of the limiting rod 6, the adjusting rod can be limited, and the adjusting cover 7 is prevented from rotating.
[0020] The basic principle and main features of the present application are shown and described above, and the advantages of the present application are also shown and described above, for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application; therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be regarded as limiting the claims.
[0021] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.
Claims
1. An office chair reclining adjustment device, comprising a fixed plate (1), wherein fixed frames (2) are fixedly connected to both ends of the fixed plate (1), a seat plate (3) is provided at the top of the fixed plate (1), and rotating rods (4) are rotatably connected to the opposite surfaces of the two fixed frames (2), and a backrest (5) is fixedly connected to the surface of the rotating rods (4), characterized in that: The rotating rod (4) movably passes through the fixed frame (2). Multiple first locking teeth (8) are fixedly connected to both ends of the rotating rod (4). Circular holes (10) are opened at both ends of the rotating rod (4). A first spring (11) is fixedly connected inside the circular hole (10). A fixed post (12) is rotatably connected to one end of the first spring (11). An adjusting cover (7) is fixedly connected to the end of the fixed post (12) away from the spring. Multiple second locking teeth (9) are fixedly connected to one end of the adjusting cover (7) corresponding to the position of the fixed post (12). The surface of the fixed frame (2) is provided with multiple limiting holes. The limiting holes are movably connected to limiting rods (6). The ends of the multiple limiting rods (6) away from the limiting holes are fixedly connected to the surface of the adjusting cover (7). The surface of the fixed frame (2) is fixedly connected to a bent rod (13). The surface of the bent rod (13) is movably sleeved with a slider (15), and the slider (15) is movably connected to the surface of the backrest (5). One end of the slider (15) is fixedly connected to a second spring (14), and the second spring (14) is movably sleeved on the surface of the bent rod (13).
2. The office chair reclining adjustment device according to claim 1, characterized in that: One end of each of the two bent rods (13) is fixedly connected to a support plate (16), and one end of the support plate (16) is fixedly connected to the surface of the two fixed frames (2).
3. The office chair reclining adjustment device according to claim 1, characterized in that: The slider (15) and the support plate (16) are provided with protective sleeves on their opposite surfaces, and the protective sleeves are movably sleeved on the surface of the second spring (14), and the surface of the first tooth (8) meshes with the surface of the second tooth (9).