Comfortable seat backrest with angle convenient to adjust
By using a press-type locking adjustment mechanism and a fork handle limiter, the problem of seat back wobbling and gaps during adjustment is solved, improving comfort and practicality.
Patent Information
- Application Number
- CN202520041590.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The existing seat backrests wobble and have gaps during adjustment, resulting in poor comfort and low practicality.
The push-type locking adjustment mechanism, through the cooperation of the fork handle limit and the buffer spring, achieves a stable connection between the backrest and the base plate, eliminating shaking and gaps.
It achieves stable back support without wobbling, and there are no gaps after adjustment, improving user comfort and enhancing practicality.
Smart Images
Figure CN223601118U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chair backrest improvement technical field, concretely relates to a comfortable chair backrest of angle convenient to adjust. BACKGROUND
[0002] Adjustable chair backrest is a device that can change the angle and position of the chair backrest according to the user's needs, commonly used in office chairs, car seats, aircraft seats and other types of seat products.
[0003] In the prior art, the adjustment mode of the backrest chair for office is mostly a connecting rod structure. When the chair backrest needs to be adjusted, the connecting rod needs to be manually bent to adjust the angle of the backrest. After the backrest is adjusted, there is a gap between the mechanism for adjustment and the chair backrest, which is prone to shaking or shaking after the angle of the backrest is adjusted, resulting in poor comfort of the backrest and relatively low practicability. Therefore, in view of the above problems, a comfortable chair backrest for angle adjustment is provided. UTILITY MODEL CONTENTS
[0004] The utility model aims at the defects and deficiencies of the prior art, and provides a seat backrest convenient to adjust. The press type adjustment mechanism is convenient to use. The limiting fork handle is installed on the adjustment mechanism. After the angle of the backrest is adjusted, there is no gap between the adjustment mechanism and the backrest. The backrest is stable and does not shake through the limiting fork handle, and the comfort of use is high.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: it contains headrest part 1, backrest connecting plate 2, bottom plate 3, locking adjustment mechanism 4, rotating bolt mechanism 5. The locking adjustment mechanism 4 is provided with two groups. The lower part of the headrest part 1 and the upper part of the backrest connecting plate 2 are connected by one group of locking adjustment mechanism 4 on one side, and are connected by rotating bolt mechanism 5 on the other side. The lower part of the backrest connecting plate 2 and the upper part of the bottom plate 3 are connected by the other group of locking adjustment mechanism 4 on one side, and are connected by rotating bolt mechanism 5 on the other side corresponding to the position of the locking adjustment mechanism 4. The locking adjustment mechanism 4 contains adjustment button 401, fork handle 402, limiting table 403, buffer spring piece 404, compression spring piece 405, rotating shaft 406, mounting plate 407, limiting seat 408 and fixed clamping seat 409. The middle part of the adjustment button 401 is provided with a fixed fork handle 402. The tail end of the fork handle 402 is on the limiting table 403. The lower part of the limiting table 403 is provided with a buffer spring piece 404. The inner side of the adjustment button 401 is provided with an integral rotating shaft 406. The compression spring piece 405 is sleeved on the rotating shaft 406, and the tail end of the compression spring piece 405 is on the outer surface of the backrest connecting plate 2. The tail end of the rotating shaft 406 penetrates through the mounting plate 407 and is fixed with the mounting plate 407. The outer side of the mounting plate 407 and the rotating shaft 406 connecting position is provided with a limiting seat 408. The fixed clamping seat 409 is an integral structure formed at the tail end of the rotating shaft 406.
[0006] Further, the backrest connecting plate 2 is provided with a backrest connecting tooth disc 201 at the position connected with the locking adjusting mechanism 4, the backrest connecting tooth disc 201 is provided with a limiting sleeve 203 on one side surface of a compression spring 405, the limiting sleeve 203 is located in the connecting and installing through hole of the backrest connecting plate 2 and the bottom plate 3, the compression spring 405 is limited and fixed by being abutted on the limiting sleeve 203, and the backrest connecting tooth disc 201 covers the installing plate 407.
[0007] Further, the backrest connecting plate 2 is provided with a plurality of evenly distributed fixed pins 202 on one side of the adjusting button 401.
[0008] Further, the locking adjusting mechanism 4 is externally covered with an outer shell 4011.
[0009] Further, the outer shell 4011 is provided with a plurality of fixed holes 4012 corresponding to the positions of the fixed pins 202, and the fixed pins 202 are inserted into the fixed holes 4012 to fix the outer shell 4011 on the outer surface of the backrest connecting plate 2.
[0010] The working principle of the utility model is as follows: one locking adjusting mechanism 4 is arranged at the headrest and backrest connecting position and the backrest and bottom plate connecting position, when the connecting angle of the connecting position needs to be adjusted, the adjusting button 401 is pressed, the compression spring 405 on the rotating shaft 406 is compressed and abutted by the limiting sleeve 203, the installing plate 407 moves inward and is separated from the backrest connecting tooth disc 201, the installing plate 407 is limited and prevented from being taken out by being abutted on the fixed clamping base 409 by the limiting seat 408, at this time, the required connecting angle is adjusted according to the actual use condition, the adjusting button 401 is released after the adjustment is completed, the compression spring 405 rebounds, the installing plate 407 is retracted to the backrest connecting tooth disc 201, at this time, the fixed fork handle 402 inside the adjusting button 401 is abutted on the limiting table 403, the adjusting angle of the connecting position is fixed, and the extrusion force formed by the change of the backrest angle is buffered by the buffer spring 404, and the shaking is reduced.
[0011] After the above technical scheme is adopted, the utility model has the beneficial effects that: the pressing locking adjusting mechanism is arranged at the headrest and backrest connecting position and the backrest and bottom plate connecting position, the multiple angle change adjustment between the backrest and the bottom plate can be realized, the pressing adjusting mechanism is convenient to use, the limiting fork handle is installed on the adjusting mechanism, after the backrest adjusting angle is adjusted, there is no gap between the adjusting mechanism and the backrest, the backrest is stable and does not shake through the limiting of the fork handle, the use comfort is high, the utility model has very high practicability, and is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0013] Figure 1 is a structural schematic view of the present application;
[0014] Figure 2 is a side view of the present application;
[0015] Figure 3 is an installation schematic view of the locking and adjusting mechanism 4 in the present application;
[0016] Figure 4 is a side view corresponding to Figure 3 ;
[0017] Figure 5 is an internal structure schematic view corresponding to Figure 4 ;
[0018] Figure 6 is an internal structure schematic view of the locking and adjusting mechanism 4 in the present application.
[0019] Mark explanation: headrest part 1, backrest connecting plate 2, bottom plate 3, locking and adjusting mechanism 4, rotating bolt mechanism 5, adjusting button 401, fork handle 402, limiting table 403, buffer spring piece 404, compression spring piece 405, rotating shaft 406, mounting plate 407, limiting seat 408, fixed clamping seat 409, outer cover 4011, fixed hole 4012, backrest connecting tooth disc 201, fixed bolt 202, limiting sleeve 203. Specific implementation
[0020] Referring to Figures 1-6The technical scheme adopted in the embodiment is shown as follows: it comprises a headrest part 1, a backrest connecting plate 2, a bottom plate 3, a locking adjusting mechanism 4, a rotating bolt mechanism 5, an adjusting button 401, a fork handle 402, a limiting table 403, a buffer spring part 404, a compression spring part 405, a rotating shaft 406, a mounting plate 407, a limiting seat 408, a fixed clamping seat 409, an outer cover 4011, a fixed hole 4012, a backrest connecting toothed disc 201, a fixed bolt 202, and a limiting sleeve 203; the locking adjusting mechanism 4 is provided in two groups, one side of the lower part of the headrest part 1 and the upper part of the backrest connecting plate 2 is connected by one group of the locking adjusting mechanism 4, and the other side is connected by the rotating bolt mechanism 5; one side of the lower part of the backrest connecting plate 2 and the upper part of the bottom plate 3 is connected by the other group of the locking adjusting mechanism 4, and the other side corresponding to the position of the locking adjusting mechanism 4 is connected by the rotating bolt mechanism 5; the locking adjusting mechanism 4 comprises the adjusting button 401, the fork handle 402, the limiting table 403, the buffer spring part 404, the compression spring part 405, the rotating shaft 406, the mounting plate 407, the limiting seat 408, and the fixed clamping seat 409; the middle part of the adjusting button 401 is provided with the fixed fork handle 402, the tail end of the fork handle 402 is on the limiting table 403, the lower part of the limiting table 403 is provided with the buffer spring part 404, the inner side of the adjusting button 401 is provided with the integrally arranged rotating shaft 406, the compression spring part 405 is sleeved on the rotating shaft 406, the tail end of the compression spring part 405 is on the outer surface of the backrest connecting plate 2, the tail end of the rotating shaft 406 penetrates through the mounting plate 407 and is fixed with the mounting plate 407, the outer side of the position where the mounting plate 407 is connected with the rotating shaft 406 is provided with the limiting seat 408, and the fixed clamping seat 409 is integrally formed with the tail end of the rotating shaft 406.
[0021] Further, the backrest connecting plate 2 is provided with the backrest connecting toothed disc 201 at the position connected with the locking adjusting mechanism 4, the limiting sleeve 203 is arranged on the surface of one side of the backrest connecting toothed disc 201, the limiting sleeve 203 is located in the connecting and mounting through hole between the backrest connecting plate 2 and the bottom plate 3, the compression spring part 405 is limited and fixed by being on the limiting sleeve 203, the backrest connecting toothed disc 201 is covered on the mounting plate 407, the locking adjusting mechanism 4 can be stably mounted on the backrest connecting plate 2, the limiting sleeve 203 is used for ensuring the concentricity of the adjacent two connecting plates, preventing the dislocation of the two connecting plates, avoiding the locking of the rotating shaft 406 caused by the dislocation, ensuring the smooth movement of the rotating shaft 406, and the compression spring part 405 on the rotating shaft 406 can press against the limiting sleeve 203 to enhance the limiting and stable connection.
[0022] Further, the backrest connecting plate 2 is provided with a plurality of fixed bolts 202 which are uniformly distributed on one side of the adjusting button 401, and the fixed bolts 202 are used for the fixed mounting of the backrest connecting plate 2 and the locking adjusting mechanism 4.
[0023] Further, the locking adjusting mechanism 4 is externally covered by an external cover 4011, which can hide the internal structure of the whole locking adjusting mechanism 4, so that the locking adjusting mechanism 4 is more beautiful when installed on the backrest connecting plate 2 and can ensure normal use of the locking adjusting mechanism 4.
[0024] Further, the external cover 4011 is provided with a plurality of fixing holes 4012 corresponding to the positions of the fixing bolts 202, the fixing bolts 202 are inserted into the fixing holes 4012 to fix the external cover 4011 on the outer surface of the backrest connecting plate 2, so that the whole locking adjusting mechanism 4 is hiddenly installed, the locking adjusting mechanism 4 is more stable and not easy to fall off, so that there is no gap between the backrest and the adjusting mechanism, no shaking, and stable work of the adjusting mechanism is ensured.
[0025] When the connecting angle of the adjusting connecting part is adjusted, the adjusting button 401 is pressed, the compression spring member 405 on the rotating shaft 406 is compressed by the limiting sleeve 203, the mounting plate 407 moves inward and is separated from the backrest connecting tooth disc 201, the mounting plate 407 is limited and prevented from falling out by being abutted on the fixed clamping seat 409 by the limiting seat 408, at this time, the connecting angle required by the actual use condition is adjusted, the headrest part 1 and the backrest connecting plate 2 connecting part and the backrest connecting plate 2 and the bottom plate 3 connecting part can be simultaneously pressed and adjusted, after the adjustment is completed, the adjusting button 401 is released, the compression spring member 405 rebounds, the mounting plate 407 is retracted to the backrest connecting tooth disc 201, at this time, the fixed fork handle 402 inside the adjusting button 401 is abutted on the limiting table 403, so that the adjusting angle of the connecting part is fixed, and the extrusion force formed by the change of the backrest angle is buffered by the buffer spring member 404, and the shaking is reduced.
[0026] The above description is only used to illustrate the technical scheme of the utility model and not to limit it, other modifications or equivalent replacements of the technical scheme of the utility model made by the ordinary skilled in the art should be covered in the claim range of the utility model.
Claims
1. A comfortable chair backrest with angle adjustment, comprising a headrest part (1), a backrest connecting plate (2), a bottom plate (3), a rotating bolt mechanism (5), characterized in that: It also contains locking adjustment mechanism (4), the headrest part (1) lower part and the backrest connecting plate (2) upper part one side is connected by a set of locking adjustment mechanism (4), the other side is connected by rotating bolt mechanism (5), the backrest connecting plate (2) lower part and the bottom plate (3) upper part one side is connected by another set of locking adjustment mechanism (4), the other side corresponding to the position of locking adjustment mechanism (4) is connected by rotating bolt mechanism (5); Locking adjustment mechanism (4) contains adjustment button (401), fork handle (402), limit table (403), buffer spring (404), compression spring (405), rotating shaft (406), mounting plate (407), limit seat (408), fixed card seat (409), the middle part of adjustment button (401) is provided with the fixed fork handle (402) through, the tail end of fork handle (402) is on the limit table (403), the lower part of limit table (403) is provided with buffer spring (404), the inner side of adjustment button (401) is provided with integral rotating shaft (406), compression spring (405) is sleeved on rotating shaft (406), and the end of compression spring (405) is on the outer surface of backrest connecting plate (2), the end of rotating shaft (406) passes through mounting plate (407) and is fixed with mounting plate (407), the outer side of mounting plate (407) and rotating shaft (406) connection position is provided with limit seat (408), fixed card seat (409) is integrally formed with the end of rotating shaft (406).
2. A comfortable chair back with easy angle adjustment according to claim 1, characterized in that: The backrest connecting plate (2) is provided with a backrest connecting gear disc (201) at the position connected with the locking adjustment mechanism (4), the backrest connecting gear disc (201) is provided with a limiting sleeve (203) on the side surface of the compression spring (405), the limiting sleeve (203) is located in the connecting and installing through hole of the backrest connecting plate (2) and the bottom plate (3), and the compression spring (405) is limited and fixed by being pressed on the limiting sleeve (203), and the backrest connecting gear disc (201) is covered on the mounting plate (407).
3. The comfortable chair back with easy angle adjustment of claim 1, wherein: The backrest connecting plate (2) is provided with a plurality of evenly distributed fixed pins (202) on the side of the adjustment button (401).
4. The easy angle-adjustable comfortable seat backrest according to claim 1, characterized in that: The locking adjustment mechanism (4) is covered with an outer shell (4011).
5. A comfortable chair back with easy angle adjustment according to claim 4, characterized in that: The outer shell (4011) is provided with a plurality of fixed holes (4012) corresponding to the positions of the fixed pins (202), and the fixed pins (202) are inserted into the fixed holes (4012) to fix the outer shell (4011) on the outer surface of the backrest connecting plate (2).