Height adjustable armrest for a car seat

Abstract

The utility model relates to the technical field of automobile seat, especially relates to a height -adjustable automobile seat handrail, including handrail box, lift seat and handrail body. Gear, rack and driving mechanism for driving gear rotation are set up in the handrail box, gear rotation is installed in the handrail box, and rack vertical sliding sets up in the handrail box and is engaged with gear. The lift seat vertical sliding penetrates the top of handrail box, and the lower extreme of lift seat is fixedly connected with rack. The handrail body sets up in the upper of lift seat, and one end is connected with the upper extreme of lift seat. Driving mechanism drives gear rotation, because of gear and rack engagement, thereby can drive rack and lift seat to lift, reach the purpose of adjusting the height of handrail body, to adapt to the crowd of different height. The combination form of gear and rack engagement transmission makes the height of handrail body reach the purpose of stepless adjustment.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and more specifically, to a height-adjustable automotive seat armrest. Background Technology

[0002] In automotive interior design, seat armrests are an important comfort feature. Their core function is to provide effective support for the arms of drivers and passengers, alleviating fatigue caused by long periods of sitting. A well-designed armrest can significantly improve the seat's support, comfort, and overall driving experience.

[0003] Currently, the height adjustment function of car seat armrests on the market generally has certain limitations, especially in business vehicles where comfort is a high priority. Common adjustment methods are mostly fixed-angle flipping or segmented adjustment with limited increments. While these adjustment structures are simple and low-cost, they cannot meet the personalized needs of users with different heights, body types, and seating habits. For tall users, the armrest position may be too low, resulting in insufficient natural and comfortable arm support and leaving shoulder muscles still tense; while for petite users, the armrest position may be too high, causing discomfort due to increased arm height. Therefore, these features fail to meet the comfort requirements of users, especially in business vehicles. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a height-adjustable car seat armrest that can solve the aforementioned problems.

[0005] The objective of this utility model is achieved through the following technical solution: A height-adjustable car seat armrest includes an armrest box, a lift seat, and an armrest body.

[0006] The armrest box is equipped with a gear, a rack, and a drive mechanism for rotating the gear. The gear is rotatably installed in the armrest box, and the rack is vertically slidably disposed in the armrest box and meshes with the gear.

[0007] The lifting seat slides vertically through the top of the armrest box, and the lower end of the lifting seat is fixedly connected to the rack.

[0008] The handrail body is located above the lifting seat, and one end is connected to the upper end of the lifting seat.

[0009] Furthermore, the drive mechanism includes a worm gear, a worm, and a drive motor. The worm gear is coaxially arranged with the gear and rotates synchronously. The worm is rotatably disposed in the armrest box and meshes with the worm gear. The drive motor is installed in the armrest box and is fixedly connected to one end of the worm.

[0010] Furthermore, a first mounting plate and a second mounting plate are fixed inside the armrest box, and the first mounting plate and the second mounting plate are respectively located on the side of the gear and the rack that are far apart from each other.

[0011] A third mounting plate is fixed between the first mounting plate and the second mounting plate. The rotating shafts of the gear and the worm gear are rotatably connected to the third mounting plate. The gear and the worm gear are respectively disposed on both sides of the third mounting plate.

[0012] Furthermore, a guide plate is provided on the side of the rack away from the gear, the guide plate is vertically fixed inside the armrest box, and a guide groove is vertically formed on the side of the guide plate near the rack, and a guide strip that matches the guide groove is fixed to the rack.

[0013] Furthermore, the guide plate and the second mounting plate are spaced apart, and a plurality of connecting plates are fixed between the guide plate and the second mounting plate.

[0014] Furthermore, the outside of the armrest box is provided with an up button and a down button connected to the drive motor.

[0015] Furthermore, the top surface of the armrest box is provided with a through hole that matches the lifting seat, and the bottom of the lifting seat is fixed with baffles around its perimeter.

[0016] Furthermore, the handrail body is rotatably connected to the upper end of the lifting seat.

[0017] Furthermore, a connecting ear plate is fixed to the upper end of the lifting seat, the connecting ear plate is provided with a rotating shaft, the handrail body is provided with a receiving groove for accommodating the connecting ear plate, and the parts of the handrail body located on both sides of the receiving groove are rotatably connected to the connecting ear plate through the rotating shaft.

[0018] Furthermore, the end of the handrail body near the lifting seat has an arc-shaped structure, and a stop is provided on one side of the top surface of the lifting seat. When the handrail body is rotated to a vertical position, the stop abuts against the handrail body.

[0019] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a height-adjustable car seat armrest. The drive mechanism rotates a gear, and the meshing of the gear and rack causes the rack and the lifting seat to rise and fall, thus adjusting the armrest height to accommodate people of different heights. The combination of gear and rack meshing transmission allows for stepless height adjustment of the armrest, enabling people of different heights to find a comfortable position, improving car seat comfort and meeting the requirements of users for comfortable seating in business vehicles.

[0020] The height-adjustable car seat armrest of this invention has a drive mechanism consisting of a worm gear, a worm, and a drive motor. The drive motor drives the worm to rotate, and the worm drives the worm wheel to rotate. Because the worm wheel and the gear are coaxial and rotate synchronously, the height of the armrest body can be adjusted. Since the worm gear transmission structure has a self-locking characteristic—meaning the worm can drive the worm wheel to rotate, but the worm wheel cannot drive the worm—the stability of the armrest body after height adjustment is ensured. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the height-adjustable car seat armrest in an embodiment of this utility model.

[0022] Figure 2 yes Figure 1 A partial structural diagram of a height-adjustable car seat armrest.

[0023] Figure 3 This is a partial structural diagram of a car seat armrest whose height is adjustable after the armrest body is raised.

[0024] Figure 4 This is a schematic diagram of another part of the structure of a car seat armrest with adjustable height after the armrest body is raised.

[0025] Figure 5 This is a schematic diagram of the overall structure of a height-adjustable car seat armrest with the armrest body rotated to a vertical position.

[0026] In the diagram: 1. Armrest box; 2. Gear; 3. Rack; 4. Lifting seat; 5. Armrest body; 6. Worm gear; 7. Worm; 8. Drive motor; 9. First mounting plate; 10. Second mounting plate; 11. Third mounting plate; 12. Rotating shaft; 13. Guide plate; 14. Guide bar; 15. Connecting plate; 16. Up button; 17. Down button; 18. Stop bar; 19. Connecting ear plate; 20. Rotating shaft; 21. Stop block. Detailed Implementation

[0027] 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 protection scope of the present utility model. Example

[0028] like Figures 1-5 As shown, the height-adjustable car seat armrest in this embodiment includes an armrest box 1, a lifting seat 4, and an armrest body 5.

[0029] The armrest box 1 can be installed on one or both sides of the car seat. The armrest box 1 contains a gear 2, a rack 3, and a drive mechanism. The gear 2 is rotatably mounted inside the armrest box 1, and the rack 3 is vertically slidably mounted inside the armrest box 1 and meshes with the gear 2. The drive mechanism drives the gear 2 to rotate, thereby causing the rack 3 to rise and fall. A lifting seat 4 slides vertically through the top of the armrest box 1, and its lower end is fixedly connected to the rack 3. The armrest body 5 is located above the lifting seat 4, and one end is connected to the upper end of the lifting seat 4.

[0030] The drive mechanism rotates gear 2. Since gear 2 meshes with rack 3, it drives rack 3 and lifting seat 4 to rise and fall, thus adjusting the height of the armrest body 5 to accommodate people of different heights. The combination of gear 2 and rack 3 allows for stepless height adjustment of the armrest body 5, enabling people of different heights to find a comfortable height and improving the comfort of the car seat.

[0031] In this embodiment, the drive mechanism includes a worm gear 6, a worm 7, and a drive motor 8. The worm gear 6 is coaxially arranged with the gear 2 and rotates synchronously. The worm 7 is rotatably disposed inside the armrest box 1 and meshes with the worm gear 6. The drive motor 8 is installed inside the armrest box 1 and is fixedly connected to one end of the worm 7. Specifically, the drive motor 8 is a small DC motor, which can achieve forward and reverse rotation by changing the direction of the current, thereby controlling the lifting and lowering of the armrest body 5.

[0032] Because the worm gear 6 and worm 7 transmission structure has a self-locking feature, that is, the worm 7 can drive the worm gear 6 to rotate, but the worm gear 6 cannot drive the worm 7 to rotate, thus ensuring the stability of the handrail body 5 after height adjustment.

[0033] Preferably, an up button 16 and a down button 17 are installed on the outer side of the armrest box 1, arranged vertically with the up button 16 above the down button 17. The up button 16 and down button 17 are electrically connected to the drive motor 8. When the up button 16 is pressed, the drive motor 8 rotates, causing the armrest body 5 to rise. When the down button 17 is pressed, the drive motor 8 changes its rotation direction, causing the armrest body 5 to descend. The drive motor 8 is electrically connected to the vehicle's power supply, thus providing power to the drive motor 8.

[0034] In this embodiment, a first mounting plate 9 and a second mounting plate 10 are fixed inside the armrest box 1. The first mounting plate 9 and the second mounting plate 10 are respectively disposed on the side where the gear 2 and the rack 3 are far apart from each other. A third mounting plate 11 is fixed between the first mounting plate 9 and the second mounting plate 10. The rotation shaft 12 of the gear 2 and the worm gear 6 is rotatably connected to the third mounting plate 11. The gear 2 and the worm gear 6 are respectively disposed on both sides of the third mounting plate 11.

[0035] A guide plate 13 is provided on the side of the rack 3 away from the gear 2. The guide plate 13 is spaced apart from the second mounting plate 10, and several connecting plates 15 are fixed between the guide plate 13 and the second mounting plate 10. The guide plate 13 is vertically fixed inside the armrest box 1. A guide groove is vertically formed on the side of the guide plate 13 near the rack 3. The upper and lower ends of the guide groove pass through the upper and lower ends of the guide plate 13. A guide strip 14 that matches the guide groove is fixed to the rack 3. The length of the guide strip 14 is the same as the length of the rack 3, so that the rack 3 slides up and down along the guide groove and avoids deviation.

[0036] In this embodiment, the top surface of the armrest box 1 has a through hole adapted to the lifting seat 4, and the bottom of the lifting seat 4 is fixed with baffles 18 to prevent it from coming off during the lifting process. Preferably, in other embodiments, both the inner top surface of the armrest box 1 and the top of the first mounting plate 9 are provided with proximity switches (not shown in the figure). The proximity switches are electrically connected to the drive motor 8. When the baffles 18 approach the sensing surface of the proximity switch to the action distance, the circuit is broken, the drive motor 8 is de-energized, thereby protecting the drive motor 8.

[0037] In this embodiment, the handrail body 5 is rotatably connected to the upper end of the lifting seat 4. Specifically, the upper end of the lifting seat 4 is fixed with a connecting ear plate 19, and the connecting ear plate 19 is provided with a rotating shaft 20. The rotating shaft 20 is a damping rotating shaft 20. The handrail body 5 has a receiving groove for accommodating the connecting ear plate 19, and the parts of the handrail body 5 located on both sides of the receiving groove are rotatably connected to the connecting ear plate 19 through the rotating shaft 20. The end of the handrail body 5 near the lifting seat 4 has an arc-shaped structure, and a stop block 21 is provided on one side of the top surface of the lifting seat 4. When the handrail body 5 is rotated to a vertical state, the stop block 21 abuts against the handrail body 5.

[0038] The height-adjustable car seat armrest in this embodiment can achieve stepless adjustment of the armrest body height, which can accommodate people of different heights. It is especially suitable for the main passenger position in business vehicles, namely the middle row seats, and meets the user's requirements for the comfort of the seats in business vehicle passenger positions.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A height-adjustable car seat armrest, characterized in that, include: Armrest box (1), the armrest box (1) is provided with a gear (2), a rack (3) and a drive mechanism for driving the gear (2) to rotate. The gear (2) is rotatably installed in the armrest box (1) and the rack (3) is vertically slidably installed in the armrest box (1) and meshes with the gear (2). A lifting seat (4) is vertically slidable through the top of the armrest box (1), and the lower end of the lifting seat (4) is fixedly connected to the rack (3); and The handrail body (5) is located above the lifting seat (4) and one end is connected to the upper end of the lifting seat (4).

2. The height-adjustable car seat armrest according to claim 1, characterized in that, The drive mechanism includes a worm wheel (6), a worm (7) and a drive motor (8). The worm wheel (6) is coaxially arranged with the gear (2) and rotates synchronously. The worm (7) is rotatably arranged in the armrest box (1) and meshes with the worm wheel (6). The drive motor (8) is installed in the armrest box (1) and is fixedly connected to one end of the worm (7).

3. The height-adjustable car seat armrest according to claim 2, characterized in that, The armrest box (1) is fixed with a first mounting plate (9) and a second mounting plate (10), which are respectively located on the side of the gear (2) and the rack (3) that are far apart from each other; A third mounting plate (11) is fixed between the first mounting plate (9) and the second mounting plate (10). The rotating shaft (12) of the gear (2) and the worm gear (6) is rotatably connected to the third mounting plate (11). The gear (2) and the worm gear (6) are respectively located on both sides of the third mounting plate (11).

4. The height-adjustable car seat armrest according to claim 3, characterized in that, A guide plate (13) is provided on the side of the rack (3) away from the gear (2). The guide plate (13) is vertically fixed inside the armrest box (1). A guide groove is vertically opened on the side of the guide plate (13) close to the rack (3). A guide strip (14) that matches the guide groove is fixed on the rack (3).

5. The height-adjustable car seat armrest according to claim 4, characterized in that, The guide plate (13) and the second mounting plate (10) are spaced apart, and a number of connecting plates (15) are fixed between the guide plate (13) and the second mounting plate (10).

6. The height-adjustable car seat armrest according to claim 5, characterized in that, The armrest box (1) is provided with an up button (16) and a down button (17) connected to the drive motor (8) on the outside.

7. The height-adjustable car seat armrest according to claim 6, characterized in that, The top surface of the armrest box (1) is provided with a through hole that is compatible with the lifting seat (4), and the bottom of the lifting seat (4) is fixed with a baffle (18).

8. The height-adjustable car seat armrest according to claim 7, characterized in that, The handrail body (5) is rotatably connected to the upper end of the lifting seat (4).

9. The height-adjustable car seat armrest according to claim 8, characterized in that, The upper end of the lifting seat (4) is fixed with a connecting ear plate (19), the connecting ear plate (19) is provided with a rotating shaft (20), the handrail body (5) is provided with a receiving groove for accommodating the connecting ear plate (19), and the parts of the handrail body (5) located on both sides of the receiving groove are rotatably connected to the connecting ear plate (19) through the rotating shaft (20).

10. The height-adjustable car seat armrest according to claim 9, characterized in that, The handrail body (5) has an arc-shaped structure at one end near the lifting seat (4). A stop (21) is provided on one side of the top surface of the lifting seat (4). When the handrail body (5) is rotated to a vertical position, the stop (21) abuts against the handrail body (5).

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