Adjustable chair headrest
By incorporating curved headrests, hinge mechanisms, and lifting slide rails, the design solves the problems of existing office chair headrests, such as their inability to dynamically conform to the cervical spine curve, imprecise angle adjustment, and poor breathability. This achieves personalized support and stable adjustment, enhancing user comfort and health protection.
Patent Information
- Application Number
- CN202520636161.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-04-07
AI Technical Summary
Existing office chair headrests cannot dynamically conform to the cervical spine curve, have insufficient angle adjustment, poor material breathability, and inadequate structural stability, resulting in user discomfort and a poor user experience.
The design incorporates a curved pillow, a hinge mechanism, and a lifting slide rail assembly, combined with a memory foam layer and a gel layer, to achieve personalized cervical spine support. The hinge mechanism allows for precise angle adjustment through a double hinge shaft and a ratchet locking device, while the lifting slide rail ensures stability through a nylon guide rail and a limit slider.
It provides personalized cervical support and adjustment, improves breathability, reduces heat buildup, ensures the stability and safety of the headrest after adjustment, enhances structural strength, and improves user comfort and health benefits.
Smart Images
Figure CN223810510U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of chair headrest, specifically relates to an adjustable chair headrest. BACKGROUND
[0002] With the popularization of office automation and long-time sitting work, the comfort and support for human health of office chairs become more and more important. Cervical spondylosis has become a common problem for many white-collar workers and long-time computer workers. Therefore, higher requirements are put forward for the design of office chair headrest, in order to provide better support and comfort, reduce cervical spine pressure, and improve work efficiency and life quality.
[0003] In the prior art, the adjustable chair headrest usually has the following characteristics: fixed shape support material such as sponge or foam is used, which cannot be dynamically adjusted according to the user's cervical curve. The angle adjustment function is relatively simple, and there may be only one or several fixed angles, which cannot provide fine adjustment. The lifting adjustment usually relies on simple slide rails and screw mechanisms, and the adjustment is not smooth, sometimes with noise. The material has poor air permeability, and long-time use may cause heat and discomfort of the head and neck. The structural stability is insufficient, and the headrest may shake during use, affecting the use experience.
[0004] In view of this, we propose an adjustable chair headrest to solve the above problems. CONTENT OF THE UTILITY MODEL
[0005] The present invention aims to solve the technical problems that the headrest in the prior art cannot dynamically fit the cervical curve and cannot provide personalized support experience for users. The angle adjustment in the prior art is not fine enough, and it is difficult to meet the personalized needs of users for comfort. The material has poor air permeability, which is not suitable for long-time use and may cause discomfort to users.
[0006] To achieve the above purpose, the utility model provides the following technical scheme:
[0007] An adjustable chair headrest, comprising:
[0008] A curved pillow for fitting the cervical curve, the curved pillow comprising a curved support pillow frame and a memory foam layer embedded in the curved support pillow frame;
[0009] A hinge mechanism for supporting the curved pillow to adjust the front and rear angles, the hinge mechanism comprising two rotating frames and a fixed frame connected by double hinge shafts; the rotating frame is fixedly installed on the curved pillow;
[0010] A lifting slide rail assembly for lifting and adjusting the curved pillow, the lifting slide rail assembly comprising a guide rail of nylon material and a sliding block limited to slide on the inner side of the guide rail and fixedly connected with the fixed frame.
[0011] As preferred, the memory cotton layer comprises a contact surface layer and a gel layer placed in the contact surface layer, and the contact surface layer is provided with a 3D breathable mesh cloth with a 5mm gel layer placed therein.
[0012] As preferred, the hinge shaft is provided with a ratchet locking device, and the ratchet locking device is provided with a positioning clamping groove at every 2.5° position.
[0013] As preferred, the top end of the guide rail is provided with a limiting block for limiting the sliding block from being separated from the guide rail, and the limiting block is provided with a locking hole, and the sliding block after being adjusted in height is locked and fixed in the guide rail through a locking bolt threadedly connected with the locking hole.
[0014] As preferred, the top end of the sliding block is a Y-shaped fork which is covered outside the fixed frame and is screwed with the fixed frame through bolts.
[0015] As preferred, the top end of the curved supporting pillow frame is provided with a reinforcing support plate.
[0016] As preferred, the internally threaded column on the rear side of the curved supporting pillow frame penetrates through the memory cotton layer and the reinforcing support plate and is inserted into the cylindrical groove on the two rotating frames, and the rotating frame, the memory cotton layer, the reinforcing support plate and the curved supporting pillow frame are fixed together through a bolt which penetrates through the cylindrical groove and is threadedly connected with the internally threaded column.
[0017] As preferred, the two ends of the two rotating frames are respectively fixedly connected with two connecting ears through bolts, and the two connecting ears are respectively rotationally connected with the two ends of the fixed frame through hinge shafts.
[0018] As preferred, the inside of the bottom end of the guide rail is fixedly provided with a mounting block through a locking handle, and the mounting block is provided with a clamping position which is clamped on the back plate of the chair.
[0019] Compared with the prior art, the technical effects and advantages of the adjustable chair headrest are:
[0020] The adjustable chair headrest realizes personalized support and adjustment of the cervical vertebra through the cooperative work of the curved pillow, the hinge mechanism and the lifting sliding rail assembly. The memory cotton layer and the gel layer inside the curved pillow can dynamically adjust the shape to fit the cervical vertebra curve according to the body temperature and pressure changes of the user, and provide comfortable support. The double hinge shaft and the ratchet locking device in the hinge mechanism allow the user to finely adjust the headrest angle in increments of 2.5°, and ensure the stability after adjustment through the positioning clamping groove. The lifting sliding rail assembly realizes the adjustment of the height of the headrest through the nylon guide rail and the limiting sliding block, and fixes the sliding block position through the locking bolt to ensure the stability of the headrest after adjustment.
[0021] The design of the adjustable chair headrest brings significant comfort and health benefits. The 3D breathable mesh and built-in gel layer improve air permeability, reduce heat accumulation, and provide a cool using feeling, especially suitable for long-term use. In addition, the fine angle adjustment and stable locking mechanism of the headrest enable users to easily find the most suitable support position, reducing cervical spine pressure and preventing cervical spine diseases.
[0022] The structural design of the adjustable chair headrest also considers stability and durability. The reinforced support plate enhances the structural strength of the headrest, preventing deformation caused by external forces and ensuring long-term stability. The design of Y-shaped fork and internal threaded column, as well as the application of connecting ears and locking handles, not only provides additional structural support, but also simplifies the assembly and disassembly process, making the headrest more user-friendly and easy to maintain. These design optimizations improve user experience and increase the overall value of the chair. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is the first perspective view of the utility model;
[0024] Figure 2 is the second perspective view of the utility model;
[0025] Figure 3 is a structural schematic view of the curved pillow of the utility model;
[0026] Figure 4 is a structural schematic view of the curved pillow and the rotating frame of the utility model;
[0027] Figure 5 is the first exploded view of the curved pillow and the rotating frame of the utility model;
[0028] Figure 6 is the second exploded view of the curved pillow and the rotating frame of the utility model;
[0029] Figure 7 is a structural schematic view of the lifting slide rail assembly, mounting block and locking handle of the utility model.
[0030] In the figure: 1, curved pillow; 11, curved support pillow frame; 12, memory foam layer; 13, reinforced support plate; 14, internal threaded column; 2, hinge mechanism; 21, double hinge shaft; 22, rotating frame; 23, fixed frame; 24, cylindrical slot; 25, connecting ear; 3, lifting slide rail assembly; 31, guide rail; 32, sliding block; 33, limit block; 34, locking hole; 35, Y-shaped fork; 4, mounting block; 41, clamping position; 5, locking handle. DETAILED DESCRIPTION
[0031] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.
[0032] The following will be combined Figures 1 to 7 Further detailed description is made to the present application,
[0033] The embodiment of the present application discloses an adjustable chair headrest, comprising a curved pillow 1, a hinge mechanism 2 and a lifting slide rail assembly 3, the curved pillow 1 is used for fitting the cervical curve, the hinge mechanism 2 is used for supporting the curved pillow 1 to adjust the front and rear angle, and the lifting slide rail assembly 3 is used for lifting and adjusting the curved pillow 1.
[0034] The curved pillow 1 comprises a curved supporting pillow frame 11 and a memory cotton layer 12 embedded in the curved supporting pillow frame 11.
[0035] The memory cotton layer 12 comprises a contact surface layer and a gel layer placed in the contact surface layer, the contact surface adopts 3D breathable mesh cloth and is internally provided with a 5mm gel layer. The contact surface adopts 3D breathable mesh cloth, and such material usually has good air permeability, can increase air circulation, reduce heat accumulation, improve the air permeability and comfort of the headrest, and is especially suitable for long-time use. The internally provided 5mm gel layer can further increase the comfort of the headrest, can dynamically fit the cervical curve, and the cooling characteristics of the gel help to reduce the local temperature, provide a cool feeling and reduce the stuffiness of the head and neck.
[0036] The top end bottom of the curved supporting pillow frame 11 is provided with a reinforcing support plate 13. The reinforcing support plate 13 is added at the top end bottom of the curved supporting pillow frame 11, which can enhance the structural strength of the headrest, prevent deformation caused by weight or external force, and thus provide more stable support.
[0037] The hinge mechanism 2 is two rotating frames 22 and a fixed frame 23 connected by double hinge shafts 21; the rotating frame 22 is fixedly installed on the curved pillow 1; the hinge shaft is provided with a ratchet locking device, and the ratchet locking device is provided with a positioning clamping groove every 2.5° position. There is a positioning clamping groove every 2.5°: such design allows the user to adjust in small angle increments, so as to more accurately find the most suitable headrest angle for oneself, and provide more detailed and personalized support. The ratchet locking device ensures that the headrest can be firmly locked after being adjusted in place, avoids accidental change in the use process, and increases the safety and stability of use.
[0038] The lifting slide rail assembly 3 includes a guide rail 31 made of nylon and a sliding block 32 that is limited to slide inside the guide rail 31 and is fixedly connected with the fixed frame 23. The top end of the guide rail 31 is provided with a limiting block 33 for limiting the sliding block 32 from disengaging from the guide rail 31, and the limiting block 33 is provided with a locking hole 34. The sliding block 32 is locked and fixed in the guide rail 31 after adjusting the height position by a locking bolt threaded with the locking hole 34. The limiting block 33 prevents the sliding block 32 from accidentally falling off the guide rail 31 during operation, ensuring safety in use. After adjusting the height, the sliding block 32 can be fixed at the desired position by the locking bolt, preventing displacement of the sliding block 32 due to vibration or other factors, and ensuring the stability of the headrest at the desired height.
[0039] By increasing the air permeability and coolness, the discomfort caused by long-term use is reduced. By more precise angle adjustment and stable locking, users can easily find the optimal support position. Through the anti-falling design and locking mechanism, the safety and stability of the headrest are ensured, reducing the potential risks during use.
[0040] The top end of the sliding block 32 is a Y-shaped fork 35 that covers the outer side of the fixed frame 23 and is screwed with the fixed frame 23. The Y-shaped fork 35 covers the outer side of the fixed frame 23 and is screwed with the fixed frame 23: this design can increase the contact area with the fixed frame 23, thereby improving the stability and durability of the structure. It can also provide better force dispersion, avoiding concentrated pressure points and reducing wear caused by long-term use.
[0041] The internally threaded column 14 on the rear side of the curved support pillow frame 11 passes through the memory foam layer 12 and the reinforced tray 13, and is inserted into the cylindrical groove 24 on the two rotating frames 22. The rotating frame 22, memory foam layer 12, reinforced tray 13 and curved support pillow frame 11 are fixed together by a bolt that penetrates the cylindrical groove 24 and is screwed with the internally threaded column 14. The internally threaded column 14 is inserted into the cylindrical groove 24 and fixed by a bolt, which makes the rotating frame 22, memory foam layer 12, reinforced tray 13 and curved support pillow frame 11 form a solid whole, improving the overall stability and durability of the headrest. At the same time, such a connection method is also convenient for assembly and disassembly.
[0042] The two ends of the two rotating frames 22 are respectively fixedly connected with two connecting ears 25 by bolts, and the two connecting ears 25 are respectively rotatably connected with the two ends of the fixed frame 23 by a hinge shaft. The connecting ears 25 are rotatably connected with the fixed frame 23, and the connecting ears 25 and the hinge shaft are fixedly connected by bolts, providing additional structural support to ensure the stability of the headrest when adjusting the angle, while reducing structural wear caused by rotation.
[0043] The bottom end of the guide rail 31 is fixed with a mounting block 4 through a locking handle 5, and the mounting block 4 is provided with a clamping position 41 assembled on the back plate of the chair. The locking handle 5 makes the installation and adjustment of the guide rail 31 and the mounting block 4 more convenient, and the design of the clamping position 41 on the mounting block 4 can ensure the stable installation of the headrest on the back plate of the chair, avoiding sliding or shaking during installation, and improving the safety of use.
[0044] The adjustable chair headrest, the curved pillow 1 fits the cervical curve, can provide personalized support according to the user's cervical shape and posture, reduce the pressure on the cervical spine during long-term work or rest, and prevent cervical diseases. Memory foam can deform according to body temperature and pressure, better adapt to the contour of the human body, and provide more comfortable support. The hinge mechanism 2 can adjust the angle forward and backward, allowing users to adjust the angle of the headrest as needed, adapting to different sitting and resting postures, improving comfort and support effect. The double-hinged shaft 21 design provides more stable support and more flexible adjustment, so that the headrest can better adapt to various angles and forces. The lifting slide rail assembly 3 allows users to adjust the position of the headrest according to their height and the height of the chair, ensuring that the headrest is always in the most comfortable position. The nylon guide rail 31 and the slider 32, the nylon material generally has a low coefficient of friction and good wear resistance, so that the lifting process is smoother, reduces noise, and increases service life.
[0045] It can provide personalized support according to the needs of different users, increase the comfort of users. It helps to protect the health of the cervical spine and reduce fatigue and injury caused by long-term work. It is easy to adjust and can meet the needs of different users in different situations. The materials and design used make the service life of the headrest longer and the maintenance cost lower. These features make this headrest very suitable for office chairs, massage chairs, leisure chairs, etc., which can improve the overall use experience of the chair.
[0046] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, shall be included in the protection scope of the present application.
Claims
1. An adjustable chair headrest, characterized by, The utility model relates to a kind of neck support, including: Curved pillow (1) for conforming to cervical curvature, curved pillow (1) includes curved supporting pillow frame (11) and memory foam layer (12) embedded in curved supporting pillow frame (11); Hinged mechanism (2) for supporting curved pillow (1) to adjust angle forward and backward, hinged mechanism (2) is two rotating racks (22) and a fixed rack (23) by double hinged shaft (21) rotation connection;Rotating rack (22) is fixedly installed on curved pillow (1); Lifting slide rail assembly (3) for lifting curved pillow (1) to adjust, lifting slide rail assembly (3) includes guide rail (31) of nylon material and slider (32) limiting sliding inside guide rail (31) and being fixedly connected with fixed rack (23).
2. An adjustable chair headrest according to claim 1, characterized in that: Memory foam layer (12) includes contact surface layer and gel layer placed in contact surface layer, contact surface uses 3D breathable mesh and its built-in 5mm gel layer.
3. An adjustable chair headrest according to claim 1, characterized in that: Hinged shaft is equipped with ratchet locking device, and ratchet locking device is equipped with positioning slot every 2.5 ° position.
4. An adjustable chair headrest according to claim 1, characterized in that: Guide rail (31) top is equipped with limiting block (33) for limiting slider (32) to separate from guide rail (31), limiting block (33) is equipped with locking hole (34) on it, slider (32) is locked and fixed in guide rail (31) after adjusting height position by locking bolt screwing with locking hole (34).
5. An adjustable chair headrest according to claim 1, characterized in that: The top of slider (32) is Y-shaped fork (35) covered outside fixed rack (23) and is screwed with fixed rack (23) by bolt.
6. An adjustable chair headrest according to claim 1, characterized in that: The top of curved supporting pillow frame (11) is equipped with reinforcing bracket (13).
7. An adjustable chair headrest according to claim 6, characterized in that: Curved supporting pillow frame (11) rear side inner threaded column (14) passes through memory foam layer (12) and reinforcing bracket (13) and is inserted with two rotating racks (22) on cylindrical groove (24) after, rotating rack (22), memory foam layer (12), reinforcing bracket (13) and curved supporting pillow frame (11) are fixed together by bolt through cylindrical groove (24) and screwing with inner threaded column (14).
8. An adjustable chair headrest according to claim 1, characterized in that: Two rotating racks (22) both ends inside are fixedly connected with two connecting ears (25) respectively, two connecting ears (25) are rotatably connected with both ends of fixed rack (23) by hinged shaft respectively.
9. An adjustable chair headrest according to claim 1, characterized in that: Guide rail (31) bottom end inside is fixed with mounting block (4) by locking handle (5), mounting block (4) is equipped with clamping position (41) assembled on chair back plate.