Electric angle adjuster for automobile seat backrest

Abstract

The invention discloses an electric recliner for an automobile seat backrest. An electric angle adjuster for an automobile seat backrest comprises an adjusting plate, an arc-shaped guide rail is arranged at the upper end of the adjusting plate, a guide rod is connected into the arc-shaped guide rail in a sliding mode, one end of the guide rod is connected with a sliding block, one side of the sliding block is connected with a lock hook, the lock hook is used for being fixed to one side of the automobile seat backrest, and a transmission mechanism is installed at one end of the adjusting plate. The lock hook drives the automobile seat backrest to rotate and adjust the use angle through the transmission mechanism. The lock hook is fixed to the automobile seat backrest, the fixing plate is fixed to a metal plate in an automobile trim panel, when a motor starts to work, a lead screw is rotated through a gearbox, power is transmitted to a sliding block and a guide rod, the sliding block moves in an arc-shaped guide rail, the lock hook is promoted to drive the automobile seat backrest to move left and right, the position of a seat frame is changed, and the automobile trim panel is fixed. According to the electric angle regulator, direct manual intervention is reduced, part abrasion caused by frequent manual operation is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seat back angle adjusters, in particular to an automobile seat back electric angle adjuster. Background Art

[0002] Car seats are indispensable parts of cars. The angle of the seat back directly affects the riding comfort of the passengers, and further affects driving safety. At present, the seat back angle is adjusted by a seat back adjustment structure composed of a plane scroll spring and a connecting rod mechanism. When the seat back is folded forward from the use position, this commonly used seat back adjustment structure first unlocks the backrest, and then relies on the elastic force released by the plane scroll spring to drive the backrest to rotate forward until it is flat.

[0003] Traditional car seat back angle adjustment mostly relies on mechanical adjustment devices, such as manual pull rods or knobs. Although these traditional methods can achieve basic seat back angle adjustment, they have some obvious shortcomings: frequent manual operation can easily cause wear of the internal parts of the adjustment mechanism, thus affecting the service life and adjustment performance; when the traditional mechanical adjustment device fails, the maintenance process is usually cumbersome, and many parts need to be disassembled to locate the problem, which increases the maintenance cost and time.

[0004] In order to solve the above problems, the present invention proposes an electric recliner for a car seat backrest, by fixing a lock hook on the car seat backrest and installing a fixing plate on the sheet metal of the car trim. The application uses a motor to drive a gear box to rotate a screw rod, thereby driving a slider to move along an arc guide rail, and finally changing the position of the seat frame. Summary of the invention

[0005] The purpose of the present invention is to provide an electric angle adjuster for a car seat backrest, which solves the problem in the prior art that frequent manual operation easily leads to wear of the internal parts of the adjustment mechanism, thereby affecting the service life and adjustment performance; when a traditional mechanical adjustment device fails, the maintenance process is usually cumbersome, and more parts need to be disassembled to locate the problem, which increases the maintenance cost and time.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric angle adjuster for a car seat back, comprising an adjustment plate, an upper end of the adjustment plate is provided with an arc guide rail, a guide rod is slidably connected in the arc guide rail, one end of the guide rod is connected to a slider, one side of the slider is connected to a lock hook, the lock hook is used to be fixed to one side of the car seat back, and a transmission mechanism is installed at one end of the adjustment plate, through which the lock hook drives the car seat back to rotate and adjust its use angle.

[0007] As a preferred embodiment of the electric angle adjuster for the car seat backrest of the present invention, the transmission mechanism includes a motor installed at one end of the adjustment plate, the motor drives a gear box, the output shaft of the gear box is coaxially connected to the screw rod, and the screw rod is threadedly connected to the slider.

[0008] As a preferred embodiment of the electric recliner for a car seat backrest of the present invention, a connecting seat is provided on the adjusting plate, and one end of the gear box is fixed to the connecting seat by a fixing pin.

[0009] As a preferred embodiment of the electric recliner for a car seat backrest of the present invention, the connecting seat is hinged to the adjusting plate via rivets.

[0010] As a preferred embodiment of the electric angle adjuster for the car seat backrest of the present invention, the guide rod passes through the guide rail and is connected to the anti-drop cap, and a gasket is sleeved on the portion of the guide rod located on the inner side of the guide rail.

[0011] As a preferred embodiment of the electric recliner for the car seat back of the present invention, a fixing plate is provided at one end of the adjustment plate, a mounting hole is provided on the fixing plate, and the fixing plate is fixed to the sheet metal in the car trim through the mounting hole.

[0012] As a preferred electric angle adjuster for a car seat backrest of the present invention, a storage sleeve is provided at one end of the adjustment plate, the fixed plate slides in the storage sleeve, sliding grooves are provided on both sides of the storage sleeve, and the protrusions on both sides of the fixed plate are slidably connected to the two sliding grooves respectively.

[0013] As a preferred electric angle adjuster for a car seat backrest of the present invention, a screw is rotatably provided on one side of one of the slide slots, and the screw passes through a protrusion on one side of the fixing plate and is threadedly connected with the protrusion.

[0014] As a preferred electric angle adjuster for a car seat backrest of the present invention, a connecting plate is installed on the outer side of the lock hook, a symmetrical sliding rail is arranged on the upper side of the connecting plate, a sliding plate is slidably connected to the sliding rail, an extension plate is hinged at one end of the sliding plate, a threaded hole is opened on the extension plate, and the extension plate is connected to the lower side of the sliding plate by a spring.

[0015] As a preferred embodiment of the electric recliner for the car seat back of the present invention, through grooves are provided on both sides of the slide rail, the bottom of the slide plate slidably cooperates with the through grooves, and when the slide plate slides to the end of the slide rail, it is fixed by positioning bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention fixes the lock hook on the car seat backrest and the fixing plate on the sheet metal inside the car trim. When the motor starts working, the screw is rotated through the gear box, thereby transmitting power to the slider and the guide rod. The slider moves in the arc guide rail, and the slider moves along a specific path under the guidance of the guide rod, causing the lock hook to move the car seat backrest left and right, thereby changing the position of the seat frame. Compared with traditional mechanical adjustment devices, the electric recliner reduces direct human intervention, can reduce component wear caused by frequent manual operation, and extend service life. Due to the relatively simple structure and high degree of modularization, once a fault occurs, maintenance personnel can more easily locate the problem and replace damaged parts, reducing maintenance costs and time.

[0018] 2. The present invention installs a connecting plate on the lock hook, a slide rail on the upper side of the connecting plate, a slide plate on the slide rail, an extension plate movably installed on one side of the slide plate, and the angle of the extension plate can be adjusted. The extension plate is connected to the seat back, which can improve the convenience of operation and provide another way of connecting to the car seat back. Secondly, the fixing plate can be retracted, which makes it easier to connect the fixing plate to the interior of the car, making the entire device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an electric recliner for a car seat backrest according to Example 2 of the present application;

[0020] Figure 2 is a three-dimensional schematic diagram of the overall structure according to Example 1 of the present application;

[0021] Figure 3 is a schematic diagram of the structure of the adjustment plate and the like according to Example 1 of the present application;

[0022] Figure 4 This is a schematic diagram of the overall structure disassembly according to Example 1 of the present application;

[0023] Figure 5 This is a schematic diagram of the structure of the connection plate and the like according to Embodiment 2 of the present application;

[0024] Figure 6 According to Example 2 of the present application Figure 5 A side plan view of the overall structure;

[0025] Figure 7 is a schematic diagram of the slide rail structure according to Example 2 of the present application;

[0026] Figure 8 It is a schematic diagram of the structure of a skateboard, an extension board, etc. according to Example 2 of the present application;

[0027] Fig. 9This is a schematic diagram of the disassembly of the storage sleeve, fixing plate and other structures according to Example 2 of the present application.

[0028] In the figure: 1. adjustment plate; 2. guide rail; 3. motor; 4. gear box; 5. fixing pin; 6. connecting seat; 7. rivet; 8. storage sleeve; 9. slide groove; 10. screw; 11. fixing plate; 12. locking hook; 13. guide rod; 14. anti-drop cap; 15. gasket; 16. slider; 17. connecting plate; 18. slide rail; 19. through groove; 20. slide plate; 21. extension plate; 22. spring; 23. positioning bolt; 24. screw. DETAILED DESCRIPTION

[0029] Embodiment 1

[0030] See also Figure 2-Figure 4 The invention discloses an electric angle adjuster for a car seat backrest, which is mainly composed of an adjustment plate 1, an arc guide rail 2, a motor 3, a gear box 4, a slider 16, a lock hook 12 and other structures. It can realize precise control of the seat back angle and has the characteristics of simple structure and easy maintenance.

[0031] An arc-shaped guide rail 2 is provided at the upper end of the adjustment plate 1, and a guide rod 13 is slidably connected in the arc-shaped guide rail 2. One end of the guide rod 13 is connected to a slider 16, and one side of the slider 16 is connected to a lock hook 12. The lock hook 12 is used to be fixed on one side of the car seat backrest. By sliding the guide rod 13 in the arc-shaped guide rail 2, the slider 16 and the lock hook 12 can rotate the car seat backrest left and right to adjust its use angle. The design of the arc-shaped guide rail 2 makes the angle adjustment of the seat backrest smoother and more fluent.

[0032] like Figure 2 and Figure 4 As shown, a transmission mechanism is installed at one end of the adjustment plate 1, and the connection plate 17 drives the seat back to move and adjust the angle through the transmission mechanism.

[0033] Specifically, the transmission mechanism includes a motor 3 installed at one end of the adjustment plate 1, and the motor 3 drives the gear box 4. Since the output shaft of the gear box 4 is coaxially connected to the screw rod 24, and the screw rod 24 is threadedly connected to the slider 16, the screw rod 24 starts to rotate under the drive of the motor 3, and the slider 16 will move along a specific path under the guidance of the guide rod 13, so that the angle of the seat back can be adjusted. This direct mechanical connection ensures the stability and reliability of the adjustment action. The design of the screw rod 24 allows more precise angle control, meeting the comfort requirements of different users.

[0034] In order to fix the gearbox 4, a connecting seat 6 is provided on the adjusting plate 1. One end of the gearbox 4 is fixed to the connecting seat 6 by a fixing pin 5, thereby improving the stability of the gearbox 4. The existence of the gearbox 4 optimizes the force transmission and protects the motor 3 from overload damage.

[0035] Furthermore, the connection seat 6 is hinged to the adjustment plate 1 through the rivets 7 so that the connection seat 6 remains stable.

[0036] In order to make the guide rod 13 slide stably in the guide rail 2, the guide rod 13 passes through the guide rail 2 and is connected to the anti-drop cap 14, and a gasket 15 is sleeved on the part of the guide rod 13 located on the inner side of the guide rail 2. The gasket 15 increases the friction of the contact surface and further ensures stability and safety during the sliding process.

[0037] like Figure 8 As shown, in order to fix the device inside the car, a fixing plate 11 is provided at one end of the adjustment plate 1, and a mounting hole is opened on the fixing plate 11. The fixing plate 11 is fixed to the sheet metal inside the car trim through the mounting hole to complete the installation of the entire electric recliner.

[0038] Embodiment 2

[0039] Considering that there are many types of cars, in order to avoid the situation where the lock hook 12 is inconvenient to be directly connected to the car seat back, improvements are made on the basis of the above embodiment.

[0040] like Figure 1 As shown, a connecting plate 17 is installed on the outer side of the lock hook 12, and a symmetrical slide rail 18 is arranged on the upper side of the connecting plate 17. A slide plate 20 is slidably connected to the slide rail 18, and an extension plate 21 is hinged at one end of the slide plate 20. When in use, the slide plate 20 needs to be slid to the end of the slide rail 18. A threaded hole is opened on the extension plate 21 to adjust the use angle of the extension plate 21 so as to connect the extension plate 21 to the seat back. The angle of the extension plate 21 relative to the slide plate 20 can be adjusted to adapt to seat backs of different shapes. The design of the extension plate 21 increases the flexibility of the device, so that it can better match various seat styles.

[0041] like Figures 5 to 8 As shown, the extension plate 21 is connected to the lower side of the slide plate 20 via a spring 22, which provides a certain elastic support to ensure that the extension plate 21 can transition smoothly during the adjustment process.

[0042] Through grooves 19 are provided on both sides of the slide rail 18, and the bottom of the slide plate 20 slides in cooperation with the through grooves 19 to improve the stability of the slide plate 20. When the slide plate 20 slides to the end of the slide rail 18, it is fixed by positioning bolts 23 to prevent the slide plate 20 from sliding freely during use.

[0043] For further information, please refer to Fig. 9A storage sleeve 8 is provided at one end of the adjustment plate 1, and the fixed plate 11 slides in the storage sleeve 8 and can be extended or retracted into the storage sleeve 8 according to actual needs. The holes opened thereon are used to fix it on the sheet metal inside the automobile trim. The design of the storage sleeve 8 allows the fixed plate 11 to be flexibly extended and retracted as needed to adapt to different interior space layouts of the vehicle, thereby enhancing the versatility of the product.

[0044] In addition, sliding grooves 9 are provided on both sides of the storage sleeve 8, and the protrusions on both sides of the fixed plate 11 are slidably connected to the two sliding grooves 9, respectively, which can effectively prevent the fixed plate 11 from separating from the storage sleeve 8. The cooperation between the sliding grooves 9 and the protrusions also ensures that the fixed plate 11 will not shift during the adjustment process, thereby maintaining the stability of the overall structure.

[0045] At the same time, a screw 10 is rotatably arranged on one side of one of the slide grooves 9. The screw 10 passes through a protrusion on one side of the fixed plate 11 and is threadedly connected with the protrusion. Through the rotation of the screw 10, not only can the fixed plate 11 move and slide, but the use of the screw 10 also provides an additional locking mechanism, ensuring that the fixed plate 11 can be firmly fixed under any circumstances.

[0046] The electric angle adjuster for the car seat back proposed in the present invention combines the design concept of mechatronics, which not only simplifies the operation process of the traditional manual adjustment method, but also significantly improves the accuracy and reliability of the seat angle adjustment. In addition, by introducing modular components such as an extension plate 21 and a series of reinforcement measures such as an anti-drop cap 14 and a gasket 15, the durability and user-friendliness of the product are effectively improved, making it a major innovative achievement in the field of modern automobile interiors.

[0047] The working principle of an electric recliner for a car seat back is as follows: a lock hook 12 or an extension plate 21 is fixed to the car seat back, and a fixing plate 11 is fixed inside the car. When the motor 3 starts to work, the screw rod 24 is rotated through the gear box 4, thereby transmitting power to the slider 16 and the guide rod 13. The slider 16 is driven by the guide rod 13 to move along the path of the arc guide rail 2, thereby changing the position of the seat frame.

[0048] Secondly, during installation, the screw 10 can be rotated to slide the fixing plate 11 out of the storage sleeve 8, and the fixing plate 11 can be fixed on the sheet metal inside the car trim. At the same time, the slide plate 20 is slid to the bottom of the slide rail 18, fixed with the positioning bolt 23, and the angle of the extension plate 21 is adjusted to facilitate the connection between the extension plate 21 and the seat back.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric recliner for a car seat back, characterized in that: The invention comprises an adjustment plate (1), wherein an arc-shaped guide rail (2) is arranged at the upper end of the adjustment plate (1), a guide rod (13) is slidably connected in the arc-shaped guide rail (2), one end of the guide rod (13) is connected to a slider (16), one side of the slider (16) is connected to a lock hook (12), the lock hook (12) is used to be fixed on one side of a car seat backrest, and a transmission mechanism is installed at one end of the adjustment plate (1), and the lock hook (12) drives the car seat backrest to rotate and adjust its use angle through the transmission mechanism.

2. The electric recliner for a car seat backrest according to claim 1, characterized in that: The transmission mechanism comprises a motor (3) mounted at one end of the adjustment plate (1), the motor (3) drives a gear box (4), the output shaft of the gear box (4) is coaxially connected to a screw rod (24), and the screw rod (24) is threadedly connected to a slider (16).

3. The electric recliner for a car seat backrest according to claim 2, characterized in that: The adjustment plate (1) is provided with a connecting seat (6), and one end of the gear box (4) is fixed to the connecting seat (6) via a fixing pin (5).

4. The electric recliner for a car seat backrest according to claim 3, characterized in that: The connecting seat (6) is hinged to the adjusting plate (1) via rivets (7).

5. The electric recliner for a car seat backrest according to claim 4, characterized in that: The guide rod (13) passes through the guide rail (2) and is connected to the anti-drop cap (14), and a gasket (15) is sleeved on the portion of the guide rod (13) located inside the guide rail (2).

6. The electric recliner for a car seat backrest according to claim 5, characterized in that: A fixing plate (11) is provided at one end of the adjustment plate (1), and a mounting hole is provided on the fixing plate (11), through which the fixing plate (11) is fixed to the sheet metal inside the automobile trim.

7. The electric recliner for a car seat backrest according to claim 6, characterized in that: A storage sleeve (8) is provided at one end of the adjustment plate (1), and the fixed plate (11) slides in the storage sleeve (8). Slide grooves (9) are provided on both sides of the storage sleeve (8), and the protrusions on both sides of the fixed plate (11) are slidably connected to the two slide grooves (9) respectively.

8. The electric recliner for a car seat backrest according to claim 7, characterized in that: A screw rod (10) is rotatably arranged on one side of one of the slide grooves (9), and the screw rod (10) passes through a protrusion on one side of the fixing plate (11) and is threadedly connected with the protrusion.

9. The electric recliner for a car seat backrest according to claim 1, characterized in that: A connecting plate (17) is installed on the outer side of the lock hook (12), and a symmetrical slide rail (18) is arranged on the upper side of the connecting plate (17). A slide plate (20) is slidably connected to the slide rail (18), and an extension plate (21) is hinged at one end of the slide plate (20). A threaded hole is opened on the extension plate (21), and the extension plate (21) is connected to the lower side of the slide plate (20) through a spring (22).

10. The electric recliner for a car seat back according to claim 9, characterized in that: Through slots (19) are provided on both sides of the slide rail (18), the bottom of the slide plate (20) is slidably matched with the through slots (19), and when the slide plate (20) slides to the end of the slide rail (18), it is fixed by a positioning bolt (23).

Images