Electric adjusting drive arm for backrest of rear seat of car

Abstract

The utility model relates to the technical field of adjusting drive arm, concretely to a kind of automobile rear seat backrest electric adjustment drive arm, including drive plate, the drive plate is fixedly connected with seat backrest, for driving seat backrest rotation, be equipped with reinforcing structure on the drive plate, for improving the structural strength of drive plate;The utility model is by setting flanging in drive plate outer ring, to enhance the edge strength of drive plate, prevent its edge torsional deformation when being stressed, improve the bearing capacity of drive plate;Two arch ribs improve the integrity of drive plate, to strengthen the strength of drive plate;Inward bulge boss reduces the contact area of drive plate and fixed plate, to reduce the friction between them, prevent repeated rotation from leading to drive plate abrasion, to increase its strength. The setting of flanging, arch rib and boss, while reducing the thickness of drive plate, can also increase its strength, make drive arm more light and handy, improve the sensitivity of seat adjustment.

Description

Technical Field

[0001] This utility model relates to the field of adjustable drive arm technology, and in particular to an electric adjustable drive arm for the backrest of a car rear seat. Background Technology

[0002] To enhance passenger comfort, spatial flexibility, and safety, the angle of the rear seat backrests in a car needs to be adjustable. The electric adjustment drive arm for the rear seat backrests is one of the core components of the electric seat adjustment system, primarily used to electrically control the angle of the rear seat backrests, thereby improving passenger comfort and convenience. Driven by a motor, it replaces traditional manual wrenches or knobs, enabling stepless adjustment of the backrest angle; users can finely adjust the tilt angle via buttons, a touchscreen, or remote control (such as in higher-end models).

[0003] Chinese patent application number CN202321959257.0 discloses an automotive seat adjustment mechanism. The backrest assembly is connected to one end of a connecting arm via a first rotating shaft, while the other end of the connecting arm is connected to one end of a seat frame assembly. The other end of the seat frame assembly is rotatably connected to a second rotating shaft. When the first rotating shaft is rotated by an external force, it drives the backrest assembly to rotate. At the same time, the first rotating shaft drives the connecting arm and the moving rod to lift the backrest assembly and upward, thereby lifting the seat frame assembly connected to the connecting arm upward. Ultimately, the seat frame assembly and the backrest assembly are aligned, making it easier for passengers to lie down and rest, thus improving passenger comfort.

[0004] However, in order to improve the strength of the connecting arm, the seat adjustment mechanism usually adopts the method of increasing the thickness of the connecting arm, but this method will make the connecting arm bulky and reduce the adjustment sensitivity of the seat. Utility Model Content

[0005] The main objective of this invention is to provide an electric adjustment drive arm for the rear seat backrest of an automobile, in order to solve the problems raised in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, an electric adjustment drive arm for a rear seat backrest of an automobile is provided, including a drive plate, the drive plate being fixedly connected to the seat backrest for driving the seat backrest to rotate, and the drive plate being provided with a reinforcing structure for improving the structural strength of the drive plate.

[0007] Furthermore, the drive board includes a front drive board, a middle drive board, and a rear drive board, with the front drive board fixedly disposed at the front end of the middle drive board and the rear drive board fixedly disposed at the rear end of the middle drive board.

[0008] Furthermore, the drive plate is inclined, making it zigzag-shaped.

[0009] Furthermore, the front drive plate is provided with a through hole, and a protective ring is provided around the hole, the protective ring being fixedly connected to the front drive plate.

[0010] Furthermore, the rear drive plate is provided with a through guide hole, and a side block is provided around the guide hole, the side block being fixedly connected to the rear drive plate.

[0011] Furthermore, the drive plate is provided with a through hole to reduce the weight of the drive plate.

[0012] Furthermore, the reinforcing structure includes a flange, two arch ribs, and a protrusion. The flange is fixedly disposed on the outer ring of the drive plate, the protrusion is fixedly disposed on the middle drive plate, and the two arch ribs are disposed on the drive plate and located on both sides of the protrusion.

[0013] Furthermore, both of the arch ribs and protrusions are hollow to reduce the weight of the drive plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention enhances the edge strength of the drive plate by adding a flange to its outer ring, preventing edge torsional deformation under stress and improving the load-bearing capacity of the drive plate. Two arched ribs penetrate the front, middle, and rear drive plates, improving the overall integrity of the drive plate and thus strengthening its strength. Inwardly protruding bumps reduce the contact area between the drive plate and the fixed plate, reducing friction and preventing wear caused by repeated rotation, thereby increasing its strength. The flange, arched ribs, and bumps reduce the thickness of the drive plate while increasing its strength, making the drive arm lighter and improving the sensitivity of seat adjustment. Attached Figure Description

[0016] Figure 1 This is a frontal overall schematic diagram of the present utility model;

[0017] Figure 2 This is a schematic diagram of the overall back of the present invention;

[0018] Figure label:

[0019] 1. Drive board; 11. Front drive board; 12. Middle drive board; 13. Rear drive board; 2. Flanged edge; 3. Arch rib; 4. Guide hole; 5. Side block; 6. Accommodation hole; 7. Protective ring; 8. Through hole; 9. Protrusion. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] This embodiment provides an electric adjustment drive arm for the rear seat backrest of a car, such as... Figure 1 and 2 As shown, it includes a drive plate 1, which is fixedly connected to the seat back and is used to drive the seat back to rotate. The drive plate 1 is provided with a reinforcing structure to improve the structural strength of the drive plate 1.

[0022] The drive board 1 includes a front drive board 11, a middle drive board 12 and a rear drive board 13. The front drive board 11 is fixedly disposed at the front end of the middle drive board 12 and the rear drive board 13 is fixedly disposed at the rear end of the middle drive board 12.

[0023] The drive plate 12 is inclined, making the drive plate 1 zigzag-shaped, reducing the contact area between the drive plate 1 and the fixed plate, thereby reducing the friction between the two, preventing wear of the drive plate 1 due to repeated rotation, and thus increasing its strength.

[0024] The front drive plate 11 is provided with a through hole 6, and a protective ring 7 is provided around the hole 6. The protective ring 7 is fixedly connected to the front drive plate 11. The protective ring 7 is used to enhance the strength of the front drive plate 11 around the hole 6 and prevent the hole 6 from deforming when the electric angle adjuster repeatedly drives the front drive plate 11 to rotate.

[0025] The rear drive plate 13 is provided with a through guide hole 4, and a side block 5 is provided around the guide hole 4. The side block 5 is fixedly connected to the rear drive plate 13. The side block 5 is used to strengthen the strength of the rear drive plate 13 around the guide hole 4 and prevent the guide hole 4 from deforming when the rotating shaft bolt slides repeatedly in the guide hole 4.

[0026] The drive board 12 has a through hole 8 to reduce the weight of the drive board 1.

[0027] The reinforcing structure includes a flange 2, two arch ribs 3 and a protrusion 9. The flange 2 is fixedly mounted on the outer ring of the drive plate 1, the protrusion 9 is fixedly mounted on the middle drive plate 12, and the two arch ribs 3 are both mounted on the drive plate 1 and located on both sides of the protrusion 9.

[0028] Both arch ribs 3 and protrusions 9 are hollow to reduce the weight of the drive plate 1.

[0029] In use, the electric angle adjuster is installed in the receiving hole 6, one end of the rotating shaft bolt is slidably installed in the guide hole 4, and the other end is fixedly connected to the push rod, so that the drive plate 1 can rotate around the fixed plate, and then the drive plate 1 is fixed to the side of the seat back.

[0030] When the electric angle adjuster is activated, it drives the drive plate 1 to rotate via the front drive plate 11, thereby changing the angle of the seat back and improving the comfort of the ride.

[0031] By setting a flange 2 on the outer ring of the drive plate 1, the edge strength of the drive plate 1 is enhanced, preventing edge torsional deformation under stress and improving the load-bearing capacity of the drive plate 1. Two arch ribs 3 penetrate the front drive plate 11, the middle drive plate 12, and the rear drive plate 13, improving the overall integrity of the drive plate 1 and thus strengthening its strength. The inwardly protruding bump 9 reduces the contact area between the drive plate 1 and the fixed plate, thereby reducing the friction between them and preventing wear caused by repeated rotation, thus increasing its strength. The flange 2, arch ribs 3, and bump 9, while reducing the thickness of the drive plate 1, also increase its strength, making the drive arm lighter and improving the sensitivity of seat adjustment.

[0032] 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 way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A drive arm for electrically adjusting the backrest of a car rear seat, characterized in that, Includes a drive plate (1), which is fixedly connected to the seat back and is used to drive the seat back to rotate. The drive plate (1) is provided with a reinforcing structure to improve the structural strength of the drive plate (1).

2. The electric adjustment drive arm for the rear seat backrest of an automobile according to claim 1, characterized in that, The drive plate (1) includes a front drive plate (11), a middle drive plate (12) and a rear drive plate (13). The front drive plate (11) is fixedly disposed at the front end of the middle drive plate (12), and the rear drive plate (13) is fixedly disposed at the rear end of the middle drive plate (12).

3. The electric adjustment drive arm for the rear seat backrest of an automobile according to claim 2, characterized in that, The drive plate (12) is inclined, making the drive plate (1) zigzag-shaped.

4. The electric adjustment drive arm for the rear seat backrest of an automobile according to claim 2, characterized in that, The front drive plate (11) is provided with a through hole (6), and a protective ring (7) is provided around the hole (6). The protective ring (7) is fixedly connected to the front drive plate (11).

5. The electric adjustment drive arm for the rear seat backrest of an automobile according to claim 2, characterized in that, The rear drive plate (13) is provided with a through guide hole (4), and a side block (5) is provided around the guide hole (4). The side block (5) is fixedly connected to the rear drive plate (13).

6. The electric adjustment drive arm for the rear seat backrest of an automobile according to claim 2, characterized in that, The drive plate (12) is provided with a through hole (8) to reduce the weight of the drive plate (1).

7. The electric adjustment drive arm for the rear seat backrest of an automobile according to claim 2, characterized in that, The reinforcing structure includes a flange (2), two arch ribs (3) and a protrusion (9). The flange (2) is fixed on the outer ring of the drive plate (1), the protrusion (9) is fixed on the middle drive plate (12), and the two arch ribs (3) are both on the drive plate (1) and located on both sides of the protrusion (9).

8. The electric adjustment drive arm for the rear seat backrest of an automobile according to claim 7, characterized in that, Both of the arch ribs (3) and the protrusions (9) are hollow to reduce the weight of the drive plate (1).

Images