An adjustable seat headrest
By designing an adjustable headrest, utilizing a lifting plate, rotating shaft, and bevel gear assembly, the problem of headrests not being able to adapt to different people was solved, enabling adjustment of headrest height and angle, thus improving user comfort and experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU DECHI AUTO PARTS MFG CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-07-31
AI Technical Summary
Existing seat headrests are not suitable for different users, causing discomfort for people of different heights and reducing user comfort and experience.
An adjustable headrest was designed, which uses components such as a sliding lifting plate, a rotating shaft, an active bevel gear, and a driven bevel gear to achieve height and angle adjustment. Combined with a threaded rod and locking strip fixing structure, it ensures that the headrest can adapt to the needs of people of different heights.
The headrest height and angle are adjustable, improving the comfort and experience for people of different heights, and enhancing the suitability and user satisfaction of the seat.
Smart Images
Figure CN224572441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat technology, specifically an adjustable seat headrest. Background Technology
[0002] A chair is a seat with a backrest, and some chairs also have armrests. According to the material, chairs can be classified as: aluminum alloy chairs, stainless steel chairs, iron chairs, wooden chairs, and chairs made of other materials.
[0003] Existing seat headrests are generally fixed to the seat, resulting in a fixed height and no rotation. This makes it difficult for users of different heights to use the seat comfortably, reducing the overall comfort and user experience. Therefore, an adjustable seat headrest is proposed to address these issues. Utility Model Content
[0004] The technical problem to be solved by this utility model is that the existing technology of seat headrests cannot be adapted to the use of different groups of people, resulting in discomfort for people of different heights. To this end, we propose an adjustable seat headrest.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: an adjustable seat headrest, including a lifting plate slidably connected to a back panel; the top of the lifting plate passes through the back panel and is bolted to a movable box, the inner cavity of the movable box is provided with a rotating assembly, the top of the rotating assembly passes through the movable box and is bolted to a headrest body, the right side of the back panel is bolted to a housing, the inner cavity of the housing is provided with a limit assembly, the front and back sides of the right side of the lifting plate are provided with slots from top to bottom, the rotating assembly includes a rotating shaft, a driving bevel gear, a driven bevel gear and a connecting shaft, the right side of the movable box is rotatably connected to the rotating shaft through a bearing, and the surface of the rotating shaft is keyed with a driving bevel gear. The rotating box has a drive bevel gear meshing with its bottom. A connecting shaft is keyed to the inner cavity of the drive bevel gear. The bottom of the inner cavity of the moving box is rotatably connected to the bottom of the connecting shaft via a bearing. The top of the connecting shaft passes through the moving box and is bolted to the bottom of the headrest body. A rotating handle is bolted to the right side of the rotating shaft. Several locking holes are formed on the surface of the rotating handle. A first sliding groove is formed on the right side of the moving box. A first slider is slidably connected to the inner cavity of the first sliding groove. A spring is fixedly connected to the bottom of the inner cavity of the first sliding groove, and the top of the spring is fixedly connected to the bottom of the first slider. A locking block is bolted to the top of the first slider, and the surface of the locking block is adapted to the inner cavity of the locking hole.
[0006] Preferably, the limiting component includes a threaded rod, a movable plate, and a locking strip. The movable plate is slidably connected to the inner cavity of the housing. A threaded hole is provided on the right side of the housing, and a threaded rod is threadedly connected to the inner cavity of the threaded hole. A handle is bolted to the right side of the threaded rod. The right side of the movable plate is rotatably connected to the surface of the threaded rod via a bearing. Locking strips are bolted to both the front and back sides of the left side of the movable plate. The left side of the locking strip passes through the housing and the movable box in sequence and engages with the inner cavity of the locking groove.
[0007] Preferably, the top and bottom of the inner cavity of the box are provided with second sliding grooves from front to back, and the inner cavity of the second sliding groove is slidably connected with a second slider. The opposite side of the second slider is bolted to the top and bottom of the moving plate.
[0008] Preferably, the surface of the headrest body is covered with a sponge pad.
[0009] The beneficial effects of this utility model are:
[0010] 1. This utility model, through the structural design of a slot, threaded rod, movable plate and locking strip, inserts the locking strip into the corresponding slot to fix the lifting plate, which facilitates the adjustment of the height of the headrest body, making it convenient for people of different heights to use and improving the user's comfort;
[0011] 2. This utility model, through its structural design of a rotating shaft, a driving bevel gear, a driven bevel gear, and a connecting shaft, allows the headrest body to rotate in coordination with the user when the user turns their head left or right, thus improving the user experience. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a cross-sectional view of the back plate structure of this utility model;
[0015] Figure 3 This is a cross-sectional view of the movable box structure of this utility model;
[0016] Figure 4 This is an enlarged view of the structure at point A shown in the figure of this utility model;
[0017] Figure 5 This is an enlarged view of the structure at point B shown in the figure of this utility model.
[0018] In the diagram: 1. Back panel; 2. Lifting plate; 3. Moving box; 4. Rotating assembly; 41. Rotating shaft; 42. Driving bevel gear; 43. Driven bevel gear; 44. Connecting shaft; 5. Headrest body; 6. Housing; 7. Limiting assembly; 71. Threaded rod; 72. Moving plate; 73. Locking bar; 8. Rotating handle; 9. First slide groove; 10. First slider; 11. Locking block; 12. Second slide groove; 13. Second slider. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0020] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0021] This application discloses an adjustable seat headrest. (See also...) Figure 1 and Figure 2 An adjustable seat headrest includes a lifting plate 2 slidably connected to a backrest 1; a movable box 3 is bolted to the top of the lifting plate 2 through the backrest 1, a rotating component 4 is provided inside the movable box 3, and a headrest body 5 is bolted to the top of the rotating component 4 through the movable box 3; a housing 6 is bolted to the right side of the backrest 1, and a limit component 7 is provided inside the housing 6; slots are sequentially formed on the front and back sides of the right side of the lifting plate 2 from top to bottom; a seat plate is fixedly connected to the bottom of the backrest 1, as shown in the figure. Figure 3 and Figure 5 The rotating assembly 4 includes a rotating shaft 41, a driving bevel gear 42, a driven bevel gear 43, and a connecting shaft 44. The rotating shaft 41 is rotatably connected to the right side of the movable box 3 via a bearing. The driving bevel gear 42 is keyed to the surface of the rotating shaft 41. The driven bevel gear 43 meshes with the bottom of the driving bevel gear 42. The connecting shaft 44 is keyed to the inner cavity of the driven bevel gear 43. The bottom of the inner cavity of the movable box 3 is rotatably connected to the bottom of the connecting shaft 44 via a bearing. The top of the connecting shaft 44 passes through the movable box 3 and is bolted to the bottom of the headrest body 5. When the user rotates their head to adjust their head posture, the headrest body 5 rotates in response, improving the user experience. Figure 5A rotating handle 8 is bolted to the right side of the rotating shaft 41. Several locking holes are provided on the surface of the rotating handle 8. A first sliding groove 9 is provided on the right side of the moving box 3. A first slider 10 is slidably connected to the inner cavity of the first sliding groove 9. A spring is fixedly connected to the bottom of the inner cavity of the first sliding groove 9, and the top of the spring is fixedly connected to the bottom of the first slider 10. A locking block 11 is bolted to the top of the first slider 10. The surface of the locking block 11 is adapted to the inner cavity of the locking hole. The rotating handle 8 is limited to prevent it from rotating after the headrest body 5 is adjusted.
[0022] Reference Figure 2 and Figure 4 The limiting component 7 includes a threaded rod 71, a movable plate 72, and a locking strip 73. The movable plate 72 is slidably connected to the inner cavity of the housing 6. A threaded hole is opened on the right side of the housing 6, and the threaded rod 71 is threadedly connected to the inner cavity of the threaded hole. A handle is bolted to the right side of the threaded rod 71. The right side of the movable plate 72 is rotatably connected to the surface of the threaded rod 71 through a bearing. The front and back sides of the left side of the movable plate 72 are bolted with locking strips 73. The left side of the locking strip 73 passes through the housing 6 and the movable box 3 in sequence and engages with the inner cavity of the locking slot. When the locking strip 73 is inserted into the corresponding locking slot, the lifting plate 2 is fixed, which makes it easy to adjust the height of the headrest body 5, making it convenient for people of different heights to use and improving the user's comfort.
[0023] Reference Figure 4 The top and bottom of the inner cavity of the housing 6 are provided with second sliding grooves 12 from front to back. The inner cavity of the second sliding groove 12 is slidably connected to a second slider 13. The opposite side of the second slider 13 is bolted to the top and bottom of the moving plate 72. The moving plate 72 is limited and assisted in moving, thereby improving the stability of the moving plate 72.
[0024] Reference Figure 1 The surface of the headrest body 5 is covered with a sponge pad; the sponge pad improves the user's comfort when using the seat.
[0025] Working principle: In use, the user moves the lifting plate 2 upwards, adjusts it, and then turns the handle. The handle drives the threaded rod 71 to rotate, which in turn drives the moving plate 72 to move to the left. The moving plate 72 then drives the locking strip 73 to move to the left, inserting the locking strip 73 into the corresponding slot and fixing the lifting plate 2 so that the user's head can be placed precisely on the headrest body 5. When the user rotates their head to adjust their head posture, they can move the locking block 11 downwards. At this time, the locking block 11 drives the first slider 10 to compress the spring. Then, the handle 8 is turned, which drives the rotating shaft 41 to rotate. This drives the driving bevel gear 42 to rotate, which in turn drives the driven bevel gear 43 to rotate. Subsequently, the driven bevel gear 43 drives the connecting shaft 44 to rotate, which in turn drives the headrest body 5 to rotate, improving the user's experience and comfort.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An adjustable seat headrest, characterized by: The device includes a lifting plate (2) slidably connected to the back panel (1); the top of the lifting plate (2) passes through the back panel (1) and is bolted to a movable box (3); the inner cavity of the movable box (3) is provided with a rotating assembly (4); the top of the rotating assembly (4) passes through the movable box (3) and is bolted to a headrest body (5); the right side of the back panel (1) is bolted to a housing (6); the inner cavity of the housing (6) is provided with a limit assembly (7); the front and back sides of the right side of the lifting plate (2) are provided with slots from top to bottom; the rotating assembly (4) includes a rotating shaft (41), a driving bevel gear (42), a driven bevel gear (43), and a connecting shaft (44); the right side of the movable box (3) is rotatably connected to the rotating shaft (41) via a bearing; the surface of the rotating shaft (41) is keyed to the driving bevel gear (42); the driving bevel gear (42) is... A driven bevel gear (43) is engaged at the bottom. The inner cavity of the driven bevel gear (43) is keyed to a connecting shaft (44). The bottom of the inner cavity of the movable box (3) is rotatably connected to the bottom of the connecting shaft (44) through a bearing. The top of the connecting shaft (44) passes through the movable box (3) and is bolted to the bottom of the headrest body (5). A rotating handle (8) is bolted to the right side of the rotating shaft (41). Several locking holes are provided on the surface of the rotating handle (8). A first sliding groove (9) is provided on the right side of the movable box (3). A first slider (10) is slidably connected to the inner cavity of the first sliding groove (9). A spring is fixedly connected to the bottom of the inner cavity of the first sliding groove (9), and the top of the spring is fixedly connected to the bottom of the first slider (10). A locking block (11) is bolted to the top of the first slider (10). The surface of the locking block (11) is adapted to the inner cavity of the locking hole.
2. An adjustable seat headrest according to claim 1, wherein: The limiting component (7) includes a threaded rod (71), a movable plate (72), and a locking strip (73). The movable plate (72) is slidably connected to the inner cavity of the housing (6). A threaded hole is provided on the right side of the housing (6), and the threaded rod (71) is threadedly connected to the inner cavity of the threaded hole. A handle is bolted to the right side of the threaded rod (71). The right side of the movable plate (72) is rotatably connected to the surface of the threaded rod (71) through a bearing. The front and back sides of the left side of the movable plate (72) are bolted with locking strips (73). The left side of the locking strips (73) passes through the housing (6) and the movable box (3) in sequence and engages with the inner cavity of the locking groove.
3. An adjustable seat headrest according to claim 1, wherein: The top and bottom of the inner cavity of the box (6) are provided with second sliding grooves (12) from front to back. The inner cavity of the second sliding groove (12) is slidably connected to a second slider (13). The opposite side of the second slider (13) is bolted to the top and bottom of the moving plate (72).
4. An adjustable seat headrest according to claim 1, wherein: The surface of the headrest body (5) is covered with a sponge pad.