Electric folding headrest structure

Abstract

The utility model discloses an electric folding headrest structure which comprises a fixing support, concentric hinges are arranged on the left side and the right side of the fixing support, a folding motor is fixedly arranged on the fixing support, the folding motor is a positive and negative rotation motor, a synchronous rod extending leftwards and rightwards is arranged on an output shaft of the folding motor, and hinge supports are arranged on the outer sides of the two concentric hinges. The headrest rods are installed on the two hinge supports respectively, installation skirt edges extending outwards are arranged on the rear sides of the two hinge supports, the fixing support is in an n shape with an opening in the front side, the folding motor is installed between a left supporting plate and a right supporting plate of the fixing support, an installation support is arranged on the fixing support, and the bottom of the installation support is bent towards the fixing support to form a z shape. The folding motor is fixed to the position, with the interval reserved between the mounting support and the fixing support, of the mounting support. The structure is compact, any inclination angle can be adjusted, adjustment is flexible, and comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an electric folding headrest structure. Background Technology

[0002] Folding headrests are an important component of car seats, primarily used to improve passenger comfort and safety. Traditional folding headrests are mostly manually adjustable, with folding mechanisms typically employing ratchet mechanisms and torsion springs. Resetting requires manual pushing, and these types of folding headrests only have two positions: the active position and the folded position.

[0003] CN119527145A discloses an electric headrest folding mechanism, including a mounting bracket and a headrest bracket. The mounting bracket has straight and curved sliding grooves on both its left and right side walls. The curved sliding groove includes an arc-shaped guide section and a straight buffer section, with the arc-shaped buffer section close to the straight sliding groove. A crossbar passes through the curved sliding grooves on both side walls of the mounting bracket, and a sliding member passes through the straight sliding grooves on both side walls of the mounting bracket. The sliding member is driven to move by a motor. A connecting rod is hinged between the crossbar and the sliding member. The headrest bracket is connected to the crossbar, and the movement of the crossbar within the curved sliding groove causes the headrest bracket to fold. This mechanism has a complex structure and many connecting parts, making it unsuitable for vehicles with limited space. Utility Model Content

[0004] This utility model aims to solve the technical problems existing in the prior art, and innovatively proposes an electric folding headrest structure that is compact, can be adjusted to any tilt angle, is flexible, and improves comfort.

[0005] To achieve the above objectives, this utility model provides an electric folding headrest structure, including a fixed bracket for mounting on a vehicle body. Concentric hinges are provided on the left and right sides of the fixed bracket. A folding motor for rotating the concentric hinges is fixedly mounted on the fixed bracket. The folding motor is a forward and reverse reversible motor. A synchronizing rod extending to the left and right is provided on the output shaft of the folding motor. The left and right ends of the synchronizing rod pass through the fixed bracket and connect to the concentric hinges on both sides. Hinge brackets are provided on the outer sides of the two concentric hinges. The headrest rod is respectively mounted on the two hinge brackets. An outwardly extending mounting skirt is provided on the rear side of each of the two hinge brackets. The mounting skirt is used for fixing the bottom of the headrest rod.

[0006] The fixed bracket is an n-shaped bracket with an opening on the front side. The folding motor is installed between the left and right support plates of the fixed bracket. The fixed bracket is provided with a mounting bracket for installing the folding motor. The bottom of the mounting bracket is bent towards the fixed bracket and forms a z-shape, so that the rest of the mounting bracket and the fixed bracket are left with space, which makes it easy for the folding motor to be fixed to the mounting bracket with bolts.

[0007] In the above scheme: the mounting bracket is fixed to the support plate on the left side of the fixed bracket, and the mounting bracket is provided with a through hole for the synchronizing rod to pass through. Setting it on one side near the fixed bracket saves space, leaving the other side available for the installation of other structures.

[0008] In the above scheme: the folding motor is detachably mounted on the mounting bracket by bolts, which facilitates the replacement of the folding motor.

[0009] In the above solution: both sides of the concentric hinge are provided with positioning structures, and the fixed bracket and hinge bracket are provided with positioning holes corresponding to the positioning structures. This improves the installation efficiency and stability of the concentric hinge.

[0010] In the above scheme: the positioning structure includes positioning protrusions spaced vertically and positioning ridges spaced horizontally, with the two positioning ridges spaced horizontally sharing the same circle.

[0011] In the above solution: the rear side of the fixed bracket is provided with a rearward bending clearance part corresponding to the folding motor, which meets the installation space requirements of the folding motor.

[0012] In the above solution: the mounting skirt is inclined, and the inclination angle of the mounting skirt matches the inclination angle of the bottom of the headrest rod, so that the upper part of the headrest rod is in a vertical state. This meets the installation requirements for the headrest.

[0013] In the above scheme: the headrest rod is equipped with a retaining spring for fixing the headrest.

[0014] In summary, the beneficial effects of this utility model are as follows: By replacing the locking plate and return torsion spring of conventional folding headrests with a folding motor and concentric hinges, it provides a convenient, simple, compact, easy-to-assemble, and highly efficient headrest. The folding motor enables electric folding and return, and can be suspended to any tilt angle according to the motor's rotation angle when adjusting the headrest folding angle. The headrest folding angle is controllable and flexible, improving comfort. The synchronizing rod drives the concentric hinges on both sides to rotate, thereby driving the headrest rod to rotate synchronously and achieve folding of the headrest. The mounting skirt serves as the mounting connection point for the headrest rod, improving the installation efficiency and making it convenient and quick. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is an exploded view of this utility model.

[0017] Figure 3 This is a schematic diagram of a concentric hinge.

[0018] Figure 4 This is a three-dimensional view of the assembled version of this utility model.

[0019] Figure 5 This is a diagram showing the headrest after it has been folded. Detailed Implementation

[0020] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0021] like Figures 1-5 As shown, an electric folding headrest structure includes a fixed bracket 1 for mounting on a vehicle body, with concentric hinges 5 on both sides of the fixed bracket 1. A folding motor 3 for rotating the concentric hinges 5 is fixedly mounted on the fixed bracket; the folding motor 3 is a forward and reverse reversible motor. The output shaft of the folding motor 3 is provided with a left-right extending synchronizing rod 4, the left and right ends of which pass through the fixed bracket 1 and connect to the concentric hinges 5 on both sides. Splines for connecting to the concentric hinges 5 and the folding motor 3 are provided at both ends and the middle of the synchronizing rod 4. Hinge brackets 6 are provided on the outer sides of the two concentric hinges 5, and positioning structures are protruding on both sides of the concentric hinges 5. Positioning holes 10 are provided on both the fixed bracket 1 and the hinge bracket 6 corresponding to the positioning structures, improving the installation efficiency and stability of the concentric hinges 5. The positioning structure includes positioning protrusions 5a spaced vertically and arc-shaped positioning ribs 5b spaced horizontally, with the two horizontally spaced positioning ribs 5b being concentrically circular.

[0022] The headrest rods 8 are mounted on two hinge brackets 6. The bottom of the headrest 9 has insertion holes for the two headrest rods 8, and each headrest rod 8 is equipped with a retaining spring 9a for securing the headrest 9. Both the rear and bottom sides of the two hinge brackets 6 have outwardly extending mounting skirts 7 for welding the bottom of the headrest rods 8. The rear mounting skirts 7 are angled, and their angle matches the angle of the bottom of the headrest rods 8, ensuring the upper part of the headrest rods 8 is vertical, thus meeting the installation requirements for the headrest 9. During welding, the bottom mounting skirts 7 can limit the insertion position of the bottom end of the headrest rods 8, and then the rear side of the bottom of the headrest rods 8 is placed against the mounting skirts 7 for welding.

[0023] The fixed bracket 1 is an n-shaped structure with an opening on the front. The n-shaped legs of the fixed bracket 1 are the left and right support plates. A mounting bracket 2 for mounting the folding motor 3 is provided on the left support plate of the fixed bracket 1, and the mounting bracket 2 has a through hole for the synchronizing rod 4 to pass through. The bottom of the mounting bracket 2 bends towards the fixed bracket 1, forming a Z-shape, thus creating space between the remaining parts of the mounting bracket 2 and the fixed bracket 1, facilitating the fixing of the folding motor 3 to the mounting bracket 2 with bolts. Sufficient spacing is provided to accommodate the bolts for the folding motor 3, and the design is reasonable. The threaded installation also facilitates the replacement of the folding motor 3. Simultaneously, the rear side of the fixed bracket 1 has a rearward-bending clearance portion 1a corresponding to the folding motor 3, meeting the installation space requirements of the folding motor 3.

Claims

1. An electric folding headrest structure, characterized by: The utility model provides a folding headrest, which comprises a fixed support (1) for mounting on a vehicle body, concentric hinges (5) arranged on the left and right sides of the fixed support (1), a folding motor (3) fixedly arranged on the fixed support (1) and used for rotating the concentric hinges (5), wherein the folding motor (3) is a reversible motor, a synchronous rod (4) extending leftward and rightward is arranged on an output shaft of the folding motor (3), left and right ends of the synchronous rod (4) pass through the fixed support (1) and are connected with the concentric hinges (5) on the two sides, hinge supports (6) are arranged on the outer sides of the two concentric hinges (5), headrest rods (8) are respectively mounted on the two hinge supports (6), and outwardly extending mounting skirts (7) are arranged on the rear sides of the two hinge supports (6) and used for fixedly connecting the bottom of the headrest rod (8). The fixed support (1) is of an n-shaped structure with an open front side, the folding motor (3) is mounted between the two side plates of the fixed support (1), and a mounting support (2) for mounting the folding motor (3) is arranged on the fixed support (1), the bottom of the mounting support (2) is bent towards the fixed support (1) and forms a z-shaped structure, so that a space is left between the mounting support (2) and the fixed support (1), and the folding motor (3) is conveniently fixed on the mounting support (2) by means of bolts.

2. The electric folding headrest structure according to claim 1, wherein: The mounting support (2) is fixed on the side plate on the left side of the fixed support (1), and a through hole is arranged on the mounting support (2) for the synchronous rod (4) to pass through.

3. The electric folding headrest structure according to claim 2, wherein: The folding motor (3) is detachably mounted on the mounting support (2) by means of bolts.

4. The electric folding headrest structure of claim 1, wherein: Positioning structures are arranged on the two sides of the concentric hinge (5), and positioning holes (10) are arranged on the fixed support (1) and the hinge support (6) and correspond to the positioning structures.

5. The electric folding headrest structure of claim 4, wherein: The positioning structures comprise positioning protrusions (5a) arranged in an upper-lower interval and arc-shaped positioning ribs (5b) arranged in a left-right interval, and the two positioning ribs (5b) arranged in the left-right interval are concentric.

6. The electric folding headrest structure of claim 1, wherein: A backwardly bent accommodation part (1a) is arranged on the rear side of the fixed support (1) and corresponds to the folding motor (3).

7. The electric folding headrest structure of claim 1, wherein: The mounting skirt (7) is arranged in an inclined manner, and the inclination angle of the mounting skirt (7) matches the inclination angle of the bottom of the headrest rod (8), so that the upper part of the headrest rod (8) is in a vertical state.

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