Office chair headrest lifting control assembly

Abstract

The utility model discloses an office chair headrest lifting control assembly which comprises an office chair back and a headrest, an outer plate is fixedly connected to the outer wall of the upper portion of the office chair back, a transmission box is fixedly connected to the inner wall of the outer plate, a supporting plate is movably connected to the top face of the outer plate in a penetrating mode, and a connecting block is fixedly connected to the top end of the supporting plate. According to the utility model, the gear is controlled to rotate through the driving lever and is matched with the meshing connection of the gear and the toothed plate, so that a user can manually control the lifting of the headrest through the driving lever or directly press the headrest to carry out lifting control at different heights through the connecting block; the connecting shaft is pushed to enable the part, extending out of the gear, of the limiting shaft to be clamped with the interior of the limiting sleeve plate, so that locking and fixing between the gear and the toothed plate are achieved, a flexible headrest lifting control mode can be provided for a user, and appropriate neck supporting can be provided according to the requirements of staff with different heights.

Description

Technical Field

[0001] This utility model relates to the field of office chair headrest technology, and in particular to an office chair headrest lifting control component. Background Technology

[0002] Office chairs are essential office furniture, referring to various chairs provided for convenience in daily work and social activities. An ergonomic office chair is important for protecting employee health and improving work efficiency. An office chair consists of a seat, backrest, and headrest.

[0003] However, in the current technology, most office chair headrests are fixed to the back of the chair. However, due to the different needs of employees of different heights, headrests of fixed height are difficult to provide suitable neck support for employees, which can easily cause cervical spine injury or fatigue during prolonged sitting, affecting the health of employees. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art and to propose an office chair headrest lifting control component.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An office chair headrest height adjustment control assembly includes an office chair backrest and a headrest. An outer plate is fixedly connected to the upper outer wall of the office chair backrest, and a transmission box is fixedly connected to the inner wall of the outer plate. A support plate is movably connected through the top surface of the outer plate, and a connecting block is fixedly connected to the top of the support plate. The connecting block is rotatably connected to the headrest. A connecting shaft is movably connected to one end of the transmission box, and a lever is fixedly connected to one end of the connecting shaft. A movable groove is formed inside the outer plate, and a gear is arranged inside the movable groove. The gear is movably sleeved on the outer wall of the connecting shaft. A limit shaft is fixedly connected to one end of the connecting shaft, and the limit shaft is movably connected to the inner wall of the gear. A toothed plate is meshed with one side of the gear, and the toothed plate is fixedly connected to the outer wall of the support plate.

[0007] Preferably, rotating connecting plates are rotatably connected to both outer walls of the connecting block, and the rotating connecting plates are fixedly connected to the outer wall of the headrest.

[0008] Preferably, a limiting sleeve is fixedly connected to one side of the inner wall of the outer plate.

[0009] Preferably, a rotating groove is provided on one side of the outer wall of the connecting block, and a limiting plate is movably connected to the inner wall of the rotating groove. The limiting plate is fixedly connected to the outer wall of the headrest.

[0010] Preferably, the inner wall of the rotating groove is provided with a telescopic groove, and a locking block is movably connected to the inner wall of the telescopic groove.

[0011] Preferably, the outer wall of the limiting plate is provided with a slot, and the slot is movably engaged with the card block.

[0012] Preferably, one end of the locking block is fixedly connected to the inner wall of the telescopic groove with a spring.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model controls the rotation of the gear by means of a lever, and the meshing connection between the gear and the toothed plate allows the user to manually control the raising and lowering of the headrest by means of the lever, or to directly press the headrest to control the raising and lowering of different heights by means of the connecting block. After the raising and lowering is completed, the connecting shaft is pushed to make the limiting shaft protrude from the inside of the gear and engage with the inside of the limiting sleeve plate, thereby realizing the locking and fixing between the gear and the toothed plate. This utility model can provide users with a flexible way to control the raising and lowering of the headrest, and can provide suitable neck support according to the needs of employees of different heights.

[0015] 2. This utility model, through the rotational connection of the rotating connecting plate and the connecting block, combined with the locking of the limiting plate, the slot and the locking block, allows the user to freely control the tilt angle of the headrest after resting their head on it, thus making it convenient for the user to use. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of an office chair headrest lifting control component is provided for this utility model;

[0017] Figure 2 This utility model provides a schematic diagram of the internal structure of an office chair headrest lifting control component;

[0018] Figure 3 This utility model provides a schematic diagram of the internal structure of the outer panel of the headrest lifting control component for an office chair;

[0019] Figure 4 This utility model provides a structural schematic diagram of the limiting shaft of an office chair headrest lifting control component;

[0020] Figure 5 This utility model provides a schematic diagram of the internal structure of the connecting block of the headrest lifting control component for an office chair.

[0021] Legend: 1. Office chair back; 2. Headrest; 21. Rotating connecting plate; 22. Limiting plate; 23. Slot; 3. Connecting block; 31. Support plate; 32. Toothed plate; 33. Telescopic groove; 34. Locking block; 35. Spring; 36. Rotating groove; 4. Outer plate; 41. Transmission box; 42. Lever; 43. Connecting shaft; 44. Movable groove; 45. Gear; 46. Limiting sleeve; 47. Limiting shaft. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figure 1 - Figure 5 As shown, this utility model provides an office chair headrest lifting control assembly, including an office chair backrest 1 and a headrest 2. An outer plate 4 is fixedly connected to the upper outer wall of the office chair backrest 1, and a transmission box 41 is fixedly connected to the inner wall of the outer plate 4. A support plate 31 is movably connected through the top surface of the outer plate 4, and a connecting block 3 is fixedly connected to the top of the support plate 31. The connecting block 3 is rotatably connected to the headrest 2. A connecting shaft 43 is movably connected to one end of the transmission box 41, and a lever 42 is fixedly connected to one end of the connecting shaft 43. A movable groove 44 is opened inside the outer plate 4, and a gear 45 is arranged inside the movable groove 44. The gear 45 is movably sleeved on the outer wall of the connecting shaft 43. A limit shaft 47 is fixedly connected to one end of the connecting shaft 43, and the limit shaft 47 is movably connected to the inner wall of the gear 45. A toothed plate 32 is meshed with one side of the gear 45, and the toothed plate 32 is fixedly connected to the outer wall of the support plate 31.

[0025] The specific settings and functions of this embodiment are described in detail below. In use, the connecting shaft 43 is rotated by the lever 42. The lever 42 controls the rotation of the gear 45 by engaging with the gear 45 internally. In conjunction with the meshing connection between the gear 45 and the toothed plate 32, the user can manually control the raising and lowering of the headrest 2 by the lever 42, or directly press the headrest 2 to control the raising and lowering of different heights through the connecting block 3. After raising and lowering, the connecting shaft 43 is pushed to make the part of the limiting shaft 47 extending from the gear 45 engage with the inside of the limiting sleeve 46, thereby achieving locking and fixing between the gear 45 and the toothed plate 32. This utility model can provide users with a flexible way to control the raising and lowering of the headrest 2, and can provide suitable neck support according to the needs of employees of different heights.

[0026] Example 2: Figure 1 - Figure 5As shown, rotating connecting plates 21 are rotatably connected to both outer walls of the connecting block 3. The rotating connecting plates 21 are fixedly connected to the outer wall of the headrest 2. A limiting sleeve plate 46 is fixedly connected to one side of the inner wall of the outer plate 4. A rotating groove 36 is opened on one side of the outer wall of the connecting block 3. A limiting plate 22 is movably connected to the inner wall of the rotating groove 36. The limiting plate 22 is fixedly connected to the outer wall of the headrest 2. A telescopic groove 33 is opened on the inner wall of the rotating groove 36. A locking block 34 is movably connected to the inner wall of the telescopic groove 33. A locking slot 23 is opened on the outer wall of the limiting plate 22. The locking slot 23 and the locking block 34 are movably engaged. A spring 35 is fixedly connected to one end of the locking block 34 and the inner wall of the telescopic groove 33. The length, strength, and shockproof structure of the spring 35 can be selected and set according to actual needs.

[0027] The overall effect of this embodiment is that by rotating the connecting plate 21 and the connecting block 3, and cooperating with the locking of the limiting plate 22, the slot 23 and the locking block 34, the user can freely control the tilt angle of the headrest 2 after resting his head on it, thus making it convenient for the user to use. The setting of the spring 35 allows the locking block 34 to quickly rebound and reset after being compressed, so that the angle adjustment remains stable.

[0028] The usage and working principle of this device are as follows: During use, the user controls the rotation of the connecting shaft 43 via the lever 42. The lever 42 controls the rotation of the gear 45 by engaging with the limiting shaft 47 inside the gear 45. This, combined with the meshing connection between the gear 45 and the toothed plate 32, allows the user to manually control the raising and lowering of the headrest 2 via the lever 42, or directly press the headrest 2 to control the raising and lowering of different heights via the connecting block 3. After raising or lowering, the connecting shaft 43 is pushed to engage the portion of the limiting shaft 47 extending from the gear 45 with the limiting sleeve 46 inside, thereby locking and fixing the gear 45 and the toothed plate 32. This invention provides the user with a flexible way to control the raising and lowering of the headrest 2. Through the engagement of the limiting plate 22, the slot 23, and the locking block 34, the user can freely control the tilt angle of the headrest 2 after resting their head on it.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An office chair headrest lifting control assembly, comprising an office chair backrest (1) and a headrest (2), characterized in that: An outer panel (4) is fixedly connected to the upper outer wall of the office chair back (1). A transmission box (41) is fixedly connected to the inner wall of the outer panel (4). A support plate (31) is movably connected through the top surface of the outer panel (4). A connecting block (3) is fixedly connected to the top of the support plate (31). The connecting block (3) is rotatably connected to the headrest (2). A connecting shaft (43) is connected through one end of the transmission box (41). A lever (42) is fixedly connected to one end of the connecting shaft (43). The outer plate (4) has an open movable groove (44) inside, and a gear (45) is provided inside the movable groove (44). The gear (45) is movably sleeved on the outer wall of the connecting shaft (43). One end of the connecting shaft (43) is fixedly connected to a limiting shaft (47). The limiting shaft (47) is movably connected to the inner wall of the gear (45). One side of the gear (45) is meshed with a toothed plate (32). The toothed plate (32) is fixedly connected to the outer wall of the support plate (31).

2. The office chair headrest lifting control component according to claim 1, characterized in that: The outer walls of both sides of the connecting block (3) are rotatably connected to rotating connecting plates (21), and the rotating connecting plates (21) are fixedly connected to the outer wall of the headrest (2).

3. The office chair headrest lifting control component according to claim 1, characterized in that: A limiting sleeve (46) is fixedly connected to one side of the inner wall of the outer plate (4).

4. An office chair headrest lifting control assembly according to any one of claims 1 to 3, characterized in that: The outer wall of one side of the connecting block (3) is provided with a rotating groove (36), and the inner wall of the rotating groove (36) is movably connected to a limiting plate (22), and the limiting plate (22) is fixedly connected to the outer wall of the headrest (2).

5. The office chair headrest lifting control component according to claim 4, characterized in that: The inner wall of the rotating groove (36) is provided with a telescopic groove (33), and a locking block (34) is movably connected to the inner wall of the telescopic groove (33).

6. The office chair headrest lifting control component according to claim 5, characterized in that: The outer wall of the limiting plate (22) is provided with a slot (23), and the slot (23) is movably engaged with the card block (34).

7. The office chair headrest lifting control component according to claim 6, characterized in that: One end of the locking block (34) is fixedly connected to the inner wall of the telescopic groove (33) by a spring (35).

Images