Automobile seat headrest side face adjusting mechanism

Abstract

The utility model discloses an automobile seat headrest side face adjusting mechanism which comprises a rear cover, a headrest framework assembly and two headrest rods, a movable block is arranged at the rear end of the headrest framework assembly, two installation holes for the headrest rods to penetrate through are formed in the movable block, a plurality of locking grooves are formed in the middle of each headrest rod at intervals in the vertical direction, and the locking grooves are connected with the headrest framework assembly. At least one of the left side and the right side of the movable block is provided with an open groove communicated with the mounting hole, a locking block capable of being clamped into the locking groove is arranged in the open groove in a left-right sliding mode, and the locking block is provided with a locking spring which is used for clamping the locking block into the locking groove and located in the open groove. The headrest framework assembly is provided with a guide unlocking assembly which pushes the locking block to leave the locking groove so that the locking block can be unlocked. The headrest unlocking device is simple in structure, the locking block and the guiding unlocking assembly are arranged on the headrest, the headrest can be driven to move up and down while unlocking is conducted, and therefore the sitting requirements of different persons are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seat headrests, and in particular relates to a side adjustment mechanism for an automobile seat headrest. Background Art

[0002] The headrest of a car is mainly used to support the head when riding. Due to the different passengers, it needs to be adjusted according to the passengers to meet the needs of different passengers. For this purpose, a height adjustment structure is provided on the headrest. In the prior art, most of the height adjustment structures are: a locking groove is provided on the headrest rod, and a locking assembly for achieving locking is provided at the upper end of the seat. After unlocking, the headrest and the headrest rod are dragged upward together. Since the locking assembly is provided at the upper end of the backrest, the locking assembly needs to be pressed all the time when unlocking, which makes it inconvenient to drag the headrest rod and the headrest up and down to adjust the position of the headrest. Utility Model Content

[0003] The utility model intends to provide a side adjustment mechanism for a car seat headrest, which can facilitate the synchronous up and down movement of the headrest when the unlocking button is pressed, thereby facilitating the up and down adjustment of the position of the headrest to adapt to the riding needs of different people.

[0004] To this end, the technical solution adopted by the utility model is: a side adjustment mechanism of a car seat headrest, comprising a rear cover, a headrest frame assembly and two headrest rods arranged at intervals on the left and right, a movable block being arranged at the rear end of the headrest frame assembly, two mounting holes for the headrest rods to pass through being arranged in the movable block, a plurality of locking grooves being arranged at intervals up and down in the middle of each headrest rod, at least one of the left and right sides of the movable block being arranged with an open groove connected to the mounting holes, a locking block which can be inserted into the locking groove and is slidably arranged in the open groove and can be inserted into the locking groove, a locking spring which is used to realize the locking block being inserted into the locking groove and is located in the open groove is arranged on the locking block, a guide unlocking assembly which pushes the locking block to leave the locking groove so that the locking block is unlocked is arranged on the headrest frame assembly, a placement groove for placing the movable block is arranged on the front side surface of the rear cover, and the movable block can slide up and down in the placement groove.

[0005] As a preferred embodiment of the above scheme, the guide unlocking assembly includes an unlocking assembly and a guide assembly, the guide assembly includes a guide block, a guide groove connected to the opening groove is provided in the middle of the front side of the movable block, the guide block is slidably arranged in the guide groove forward and backward, a guide spring is provided between the guide block and the movable block for keeping the guide block at the front end of the guide groove, and a connecting structure is provided between the guide block and the locking block, and when the unlocking assembly is working, it can push the guide block to move backward, thereby causing the locking block to leave the locking groove.

[0006] Further preferably, the connecting structure includes a connecting slide groove which is arranged on the locking block and passes through from top to bottom. The locking block is arranged between the guide block and the headrest rod. The front end of the connecting slide groove is arranged close to the guide block, and the rear end is arranged away from the guide block. The guide block is provided with a connecting column which can be passed through the connecting slide groove. When the guide block moves backward under the action of the unlocking assembly, the connecting column moves in the connecting slide groove, so that the locking block moves toward the guide block.

[0007] Further preferably, the guide block comprises two guide block bodies spaced apart in an upper and lower manner, the middle parts of the two guide block bodies are connected by a T-block, two connecting columns are provided, and are arranged at the rear end of the guide block body and on the left and right sides of the T-block, and convex ribs are provided on the upper and lower outer sides of each guide block body to facilitate the guide block to slide forward and backward.

[0008] Further preferably, the front end of the guide block is arranged as a triangular block protruding forward, and the rear end of the guide block is arranged with an anti-detachment barb for preventing the guide block from escaping from the guide groove.

[0009] Further preferably, a limiting hook is provided on at least one of the front and rear sides of the locking block, and a limiting groove is provided on the movable block at a position corresponding to the limiting hook.

[0010] Further preferably, the lower ends of the two headrest rods are set on the seat through the same fixing block, the upper ends of the headrest rods are set on and located inside the rear cover, the upper end of each headrest rod can be fixed to the rear cover by a corresponding pin, and a cross bar for connecting the two headrest rods can also be set at the upper end of the headrest rod, and the cross bar is fixed to the upper end of the rear cover.

[0011] Further preferably, a guide sleeve is provided between the headrest rod and the movable block, and the guide sleeve is provided with a locking groove for the locking block to pass through and then be inserted into the locking groove.

[0012] Further preferably, the headrest frame assembly includes a headrest frame and a decorative cover arranged at the rear end of the headrest frame, the movable block is arranged at the rear end of the decorative cover, the unlocking assembly is arranged between the decorative cover and the headrest frame, and the decorative cover has a clearance groove for the unlocking assembly to push the guide block to slide backward.

[0013] Further preferably, the unlocking assembly includes an unlocking rod hingedly arranged at the rear end of the headrest frame through a vertical axis, one end of the unlocking rod is provided with an unlocking button after passing through the decorative cover, and an unlocking spring is provided between the unlocking rod and the headrest frame, and when the unlocking button is pressed, the other end of the unlocking rod can push the guide block to move backward.

[0014] The beneficial effects of the utility model are as follows: the structure is simple, and the locking block and the guide unlocking assembly are arranged on the headrest, so that the headrest can be driven to move up and down while being unlocked, that is, the operation of moving the headrest up and down is convenient, thereby meeting the riding needs of different people. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0016] Figure 2 It is an exploded view of the utility model.

[0017] Figure 3 It is a cross-sectional view of the utility model.

[0018] Figure 4 It is a schematic diagram of the installation of the headrest frame of the utility model.

[0019] Figure 5 It is a schematic diagram of the installation of the movable block and the rear cover in the utility model.

[0020] Figure 6 It is a schematic diagram of the installation of the locking block and the guide block in the utility model.

[0021] Figure 7 It is a schematic diagram of the movable block in the utility model.

[0022] Figure 8 It is a schematic diagram of the locking block and the guide block in the utility model.

[0023] Figure markings: rear cover-1, headrest rod-2, locking groove-2a, movable block-3, mounting hole-3a, opening groove-3b, guide groove-3c, limiting groove-3d, locking block-4, connecting slide groove-4a, limiting hook-4b, locking spring-5, guide block-6, connecting column-6a, guide block body-6b, T-block-6c, rib-6d, anti-slip hook-6e, guide spring-7, fixing block-8, guide sleeve-9, headrest frame-10, decorative cover-11, unlocking rod-12, unlocking button-13, unlocking spring-14. DETAILED DESCRIPTION

[0024] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0025] like Figure 1-8As shown, a side adjustment mechanism of a headrest of a car seat is mainly composed of a rear cover 1, a headrest frame assembly, a headrest rod 2, a movable block 3, a locking block 4, a locking spring 5 and a guide unlocking assembly. Among them, two headrest rods 2 are arranged at intervals on the left and right, and a plurality of locking grooves 2a are arranged at intervals in the middle of each headrest rod 2. The movable block 3 is arranged at the rear end of the headrest frame assembly, and two mounting holes for the headrest rod 2 to pass through are arranged in the movable block 3.

[0026] At least one of the left and right sides of the movable block 3 is provided with an open groove 3b connected to the mounting hole 3a, and a locking block 4 that can be inserted into the locking groove 2a is provided in the opening groove 3b to slide left and right. In order to maintain the state of the locking block, a locking spring 5 is provided on the locking block 4 for realizing the locking block 4 being inserted into the locking groove 2a and located in the opening groove 3b. A guide unlocking assembly is provided on the headrest frame assembly to push the locking block 4 to leave the locking groove 2a so that the locking block 4 is unlocked. When the guide unlocking assembly works, it can drive the locking block to leave the locking groove, and then drive the headrest frame assembly and the movable block to move up and down. In order to facilitate the up and down movement of the headrest frame assembly, a placement groove for placing the movable block 3 is provided on the front side of the rear cover 1, and the movable block 3 can slide up and down in the placement groove. In this embodiment, locking blocks are provided on both sides of the movable block, and locking springs are provided on both sides of the upper and lower sides of each locking block. To facilitate the installation of the locking springs, installation protrusions are provided on the upper and lower surfaces of the locking blocks.

[0027] The specific structure of the guide unlocking assembly includes an unlocking assembly and a guide assembly, wherein the guide assembly includes a guide block 6, a guide groove 3c connected to the opening groove 3b is provided in the middle of the front side of the movable block 3, the guide block 6 is slidably arranged in the guide groove 3c, and a connecting structure is provided between the guide block 6 and the locking block 4. When the unlocking assembly is working, the guide block 6 can be pushed to move backward, so that the locking block 4 leaves the locking groove 2a. In order to ensure that the guide block can return to its original position when the unlocking assembly is not working, a guide spring 7 for keeping the guide block 6 at the front end of the guide groove is provided between the guide block 6 and the movable block 3. Preferably, the guide spring is provided in the middle of the rear end of the guide block.

[0028] The specific structure of the connection structure includes a connection slot 4a which is provided on the locking block 4 and passes through the locking block 4 from top to bottom, and the locking block 4 is provided between the guide block 6 and the headrest rod 2. In order to realize that when the guide block slides backward, the locking block can be driven to leave the locking slot, the front end of the connection slot 4a is provided close to the guide block 6, and the rear end is provided away from the guide block 6. At the same time, a connection column 6a which can be provided on the guide block 6 and can pass through the connection slot 4a is provided. When the guide block 6 moves backward under the action of the unlocking assembly, the connection column 6a moves in the connection slot 4a, so that the locking block 4 moves toward the guide block 6.

[0029] In order to facilitate the relative movement between the guide block and the locking block, the specific structure of the guide block 6 includes two guide block bodies 6b arranged at intervals from top to bottom, and the middle part between the two guide block bodies 6b is connected by a T-block 6c, wherein two connecting columns 6a are provided, and are arranged at the rear end of the guide block body 6b and on the left and right sides of the T-block 6c. In order to reduce the friction when the guide block and the movable block move relative to each other, convex ribs 6d are provided on the upper and lower outer sides of each guide block body 6b to facilitate the guide block 6 to slide forward and backward.

[0030] Preferably, the front end of the guide block 6 is set as a triangular block protruding forward, and the rear end of the guide block 6 is provided with an anti-detachment hook 6e for preventing the guide block 6 from escaping from the guide groove, and the left and right ends of the upper and lower outer sides of each guide block body are provided with anti-detachment hooks. The anti-detachment hook is set at the rear end, which can effectively prevent the guide block from excessively moving when the guide spring returns, so that the connecting column leaves the connecting slot.

[0031] Preferably, a limiting hook 4b is provided on at least one of the front and rear sides of the locking block 4, and a limiting groove 3d is provided on the movable block 3 at the position corresponding to the limiting hook 4b. By setting the limiting groove and the limiting hook, the maximum distance when the locking block is away from the guide block is limited, which can effectively prevent the connecting column from leaving the connecting slide groove.

[0032] The lower ends of the two headrest rods are both arranged on the seat through the same fixing block 8, and the upper ends of the headrest rods are arranged on and inside the rear cover 1. The upper end of each headrest rod 2 can be fixed on the rear cover 1 through a corresponding pin, and a slot for the pin to pass through is provided at the top of the headrest rod. A cross bar for connecting the two headrest rods 2 can also be provided at the upper end of the headrest rod 2, and the cross bar is fixed to the upper end of the rear cover.

[0033] In order to facilitate the upward and downward sliding of the movable block relative to the headrest rod, a guide sleeve 9 fixed on the movable block is provided between the headrest rod 2 and the movable block 3, and a locking groove is provided on the guide sleeve 9 for the locking block to pass through and then be inserted into the locking groove.

[0034] The headrest frame assembly includes a headrest frame 10 and a decorative cover 11 arranged at the rear end of the headrest frame 10, wherein the movable block 3 is arranged at the rear end of the decorative cover 11, the unlocking assembly is arranged between the decorative cover 11 and the headrest frame 10, and a clearance groove is provided on the decorative cover 11 for the unlocking assembly to push the locking block to slide backward. The specific structure of the unlocking assembly includes an unlocking rod 12 hingedly arranged at the rear end of the headrest frame through a vertical axis, and an unlocking button 13 is arranged after one end of the unlocking rod 12 passes through the decorative cover. In order to realize the return of the unlocking rod after unlocking, an unlocking spring 14 is arranged between the end of the unlocking rod 12 close to the unlocking button and the headrest frame. When the unlocking button 13 is pressed, the other end of the unlocking rod 12 can push the guide block to move backward.

Claims

1. A vehicle seat headrest side adjustment mechanism, comprising a rear cover (1), a headrest frame assembly and two headrest rods (2) spaced apart from each other, a movable block (3) being arranged at the rear end of the headrest frame assembly, two mounting holes (3a) being arranged in the movable block (3) for the headrest rods (2) to pass through, a plurality of locking grooves (2a) being spaced apart from each other in the middle of each headrest rod (2), characterized in that: At least one of the left and right sides of the movable block (3) is provided with an open groove (3b) connected to the mounting hole (3a); a locking block (4) capable of being inserted into the locking groove (2a) is slidably arranged in the opening groove (3b) to the left and right; a locking spring (5) is arranged on the locking block (4) for inserting the locking block (4) into the locking groove (2a) and is located in the opening groove (3b); a guide unlocking component is arranged on the headrest frame assembly for pushing the locking block (4) to leave the locking groove (2a) so that the locking block (4) is unlocked; a placement groove for placing the movable block (3) is arranged on the front side surface of the rear cover (1); and the movable block (3) can slide up and down in the placement groove.

2. The side adjustment mechanism for the headrest of a car seat according to claim 1, characterized in that: The guide unlocking assembly comprises an unlocking assembly and a guide assembly, wherein the guide assembly comprises a guide block (6), a guide groove (3c) connected to the opening groove (3b) is arranged in the middle of the front side of the movable block (3), the guide block (6) is arranged in the guide groove (3c) to slide forward and backward, a guide spring (7) is arranged between the guide block (6) and the movable block (3) for keeping the guide block (6) at the front end of the guide groove, and a connecting structure is arranged between the guide block (6) and the locking block (4), so that when the unlocking assembly is working, the guide block (6) can be pushed to move backward, thereby causing the locking block (4) to leave the locking groove (2a).

3. The side adjustment mechanism for the headrest of a car seat according to claim 2, characterized in that: The connection structure comprises a connection slot (4a) which is arranged on the locking block (4) and passes through the locking block (4) from top to bottom. The locking block (4) is arranged between the guide block (6) and the headrest rod (2). The front end of the connection slot (4a) is arranged close to the guide block (6), and the rear end is arranged away from the guide block (6). The guide block (6) is provided with a connection column (6a) which can be inserted into the connection slot (4a). When the guide block (6) moves backward under the action of the unlocking component, the connection column (6a) moves in the connection slot (4a), so that the locking block (4) moves toward the guide block (6).

4. The side adjustment mechanism for the headrest of a car seat according to claim 3, characterized in that: The guide block (6) comprises two guide block bodies (6b) spaced apart from each other in the upper and lower parts, the middle parts of the two guide block bodies (6b) being connected by a T-shaped block (6c), two connecting columns (6a) being provided and arranged at the rear end of the guide block body (6b) and at the left and right sides of the T-shaped block (6c), and convex ribs (6d) for facilitating the guide block (6) to slide forward and backward are provided on the upper and lower outer sides of each guide block body (6b).

5. The side adjustment mechanism for the headrest of a car seat according to claim 2, characterized in that: The front end of the guide block (6) is arranged as a triangular block protruding forward, and the rear end of the guide block (6) is provided with an anti-detachment barb (6e) for preventing the guide block (6) from escaping from the guide groove.

6. The side adjustment mechanism for the headrest of a car seat according to claim 2, characterized in that: A limiting barb (4b) is provided on at least one of the front and rear sides of the locking block (4), and a limiting groove (3d) is provided on the movable block (3) at a position corresponding to the limiting barb (4b).

7. The side adjustment mechanism for the headrest of a car seat according to claim 1, characterized in that: The lower ends of the two headrest rods (2) are both arranged on the seat via the same fixing block (8), and the upper ends of the headrest rods (2) are arranged on the rear cover (1) and are located inside the rear cover (1).

8. The side adjustment mechanism for the headrest of an automobile seat according to claim 1, characterized in that: A guide sleeve (9) is provided between the headrest rod (2) and the movable block (3), and the guide sleeve (9) is provided with a locking groove for the locking block (4) to pass through and then be inserted into the locking groove (2a).

9. The side adjustment mechanism for the headrest of an automobile seat according to claim 2, characterized in that: The headrest frame assembly comprises a headrest frame (10) and a decorative cover (11) arranged at the rear end of the headrest frame (10); the movable block (3) is arranged at the rear end of the decorative cover (11); the unlocking assembly is arranged between the decorative cover (11) and the headrest frame (10); and the decorative cover (11) has a clearance groove for the unlocking assembly to push the guide block (6) to slide backwards.

10. The side adjustment mechanism for the headrest of a car seat according to claim 9, characterized in that: The unlocking assembly comprises an unlocking rod (12) hingedly arranged at the rear end of the headrest frame (10) via a vertical axis, one end of the unlocking rod (12) passing through the decorative cover (11) is provided with an unlocking button (13), an unlocking spring (14) is provided between the unlocking rod (12) and the headrest frame (10), and when the unlocking button (13) is pressed, the other end of the unlocking rod (12) can push the guide block to move backwards.

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