Automobile seat headrest unlocking mechanism

Abstract

The utility model relates to the technical field of automobile headrest processing, and discloses an automobile seat headrest unlocking mechanism, comprising a seat body, a guide rod symmetrically arranged on the seat body along the vertical direction, and a headrest shell sleeved on the guide rod, a plurality of fixing grooves are evenly opened on the guide rod along the horizontal direction, the fixing grooves are located on a side of the guide rod close to the adjacent guide rod, locking pieces that can be engaged with the fixing grooves are symmetrically and movably arranged on the headrest shell, and a driving mechanism for driving two locking pieces to move synchronously is arranged in the headrest shell; the utility model has the effect of facilitating the adjustment of the automobile seat headrest.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile headrest processing, in particular to an automobile seat headrest unlocking mechanism. Background Art

[0002] As people's living standards continue to improve, family cars have become increasingly popular, and the safety and comfort of vehicles have attracted much attention. Generally, headrests are installed on car seats. On the one hand, they are used to support the occupants' heads to avoid neck injuries at the moment of vehicle collision, and on the other hand, they are used to improve riding comfort.

[0003] However, the supporting parts of current automobile headrests are mostly fixed. Some are designed to accommodate people of different heights. Although the position of the supporting part can be adjusted up and down, the adjustment method is relatively complicated and inconvenient to operate. Utility Model Content

[0004] The utility model aims to provide an unlocking mechanism for a car seat headrest, which has the effect of facilitating the adjustment of the car seat headrest.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: it includes a seat body, a guide rod symmetrically arranged on the seat body along the vertical direction, and a headrest shell sleeved on the guide rod, a plurality of fixing grooves are evenly opened on the guide rod along the horizontal direction, the fixing grooves are located on the side of the guide rod close to the adjacent guide rod, locking pieces that can be engaged with the fixing grooves are symmetrically and movably arranged on the headrest shell, and a driving mechanism for driving the two locking pieces to move synchronously is arranged in the headrest shell.

[0006] The utility model is further configured as follows: the driving mechanism includes a rotating gear arranged on the headrest shell and rotating in a vertical direction, and movable racks arranged on both sides of the rotating gear, the movable rack is meshed with the rotating gear, a movable block is arranged between one end of the movable rack and the adjacent locking piece, and the rotating gear can drive the two movable racks to move relative to each other.

[0007] The utility model is further configured as follows: a return spring is arranged between one end of the moving rack away from the moving block and the headrest shell, and when the return spring is at its original length, the locking piece is engaged with the fixing groove.

[0008] The utility model is further configured as follows: a push rack is horizontally slidably arranged on one side of the headrest shell, the push rack is meshed with the rotating gear, and the push rack can drive the two movable racks to move relative to each other.

[0009] The utility model is further configured as follows: a pushing block is provided at one end of the pushing rack.

[0010] The utility model is further configured as follows: the pushing block can abut against the outer wall of the headrest shell, and when the pushing block abuts against the outer wall of the headrest shell, the locking piece is engaged with the fixing groove.

[0011] The utility model is further configured as follows: an end of the moving block close to the rotating gear can abut against the rotating gear, and when the moving block abuts against the rotating gear, a set distance is provided between the locking piece and the fixing groove.

[0012] The utility model is further configured as follows: a first positioning rod is provided at one end of the moving rack away from the moving block, a second positioning rod matching the return spring is provided in the headrest shell, the first positioning rod and the second positioning rod both move through the adjacent return springs, and when the moving block contacts the rotating gear, a set distance is provided between the first positioning rod and the adjacent second positioning rod.

[0013] The utility model is further configured as follows: a bushing matched with the guide rod is symmetrically arranged in the headrest shell, the guide rod can movably pass through the bushing, and a locking hole matched with the locking sheet is opened on the bushing.

[0014] The utility model is further configured as follows: the bushing is made of wear-resistant material.

[0015] The beneficial effects of the utility model are:

[0016] 1. By setting a fixing groove, a locking piece and a driving mechanism, when the position of the headrest needs to be adjusted, the driving mechanism is first adjusted to drive the two locking pieces closer to each other until the locking pieces are separated from the fixing grooves, and then the headrest shell can be pushed up and down to adjust the height of the headrest shell. The position of the headrest shell is fixed by the locking piece and the fixing groove, and the locking piece is driven by the driving mechanism to move to unlock the headrest shell, thereby realizing the height adjustment of the headrest shell. The structure is simple and convenient for adjusting the car headrest.

[0017] 2. By setting a pushing rack and a pushing block, when the position of the headrest needs to be adjusted, the pushing block can be directly pulled outward. The pushing block drives the pushing rack to move outward, thereby driving the rotating gear to rotate, and also driving the moving rack to move, driving the two moving blocks and the locking piece to approach each other until the locking piece is separated from the fixed groove, and the car headrest can be adjusted; the headrest shell is unlocked by pulling the pushing block, which is simple and convenient to operate.

[0018] 3. By providing a reset spring, etc., after pulling the push block outward to adjust the headrest shell, the push block can be directly released. After releasing the push block, the elastic force of the reset spring pushes the movable rack, the movable block and the locking piece close to the fixed groove, so that the locking piece automatically engages with the fixed groove, and at the same time, the movable rack drives the rotating gear to rotate, thereby driving the push rack to move, so that the push block moves to contact the outer wall of the headrest shell; therefore, by providing a reset spring, the automatic locking of the headrest shell and the automatic reset of the push block are achieved, making the operation of adjusting the car headrest simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of an unlocking mechanism for a headrest of a car seat of the utility model;

[0021] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of an unlocking mechanism for a headrest of a car seat of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of an embodiment of an unlocking mechanism for a headrest of a car seat of the utility model;

[0023] Figure 4 It is a partial exploded structural schematic diagram of an embodiment of an unlocking mechanism for a headrest of a car seat of the utility model;

[0024] Figure 5 The utility model is a partial cross-sectional structural diagram of an embodiment of an unlocking mechanism for a headrest of a car seat.

[0025] In the figure, 1, seat body; 2, guide rod; 3, headrest shell; 4, fixing groove; 5, locking plate; 6, driving mechanism; 6a, rotating gear; 6b, moving rack; 7, moving block; 8, return spring; 9, pushing rack; 10, pushing block; 11, first positioning rod; 12, second positioning rod; 13, bushing; 14, locking hole. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides an unlocking mechanism for a car seat headrest, such as Figures 1 to 5 As shown, it includes a seat body 1, a guide rod 2 symmetrically arranged on the seat body 1 in the vertical direction, and a headrest shell 3 sleeved on the guide rod 2, a plurality of fixing grooves 4 are evenly opened on the guide rod 2 in the horizontal direction, the fixing groove 4 is located on the side of the guide rod 2 close to the adjacent guide rod 2, and locking pieces 5 that can be engaged with the fixing grooves 4 are symmetrically and movably arranged on the headrest shell 3, and a driving mechanism 6 for driving the two locking pieces 5 to move synchronously is arranged in the headrest shell 3.

[0028] Furthermore, the driving mechanism 6 includes a rotating gear 6a rotatably arranged on the headrest shell 3 along the vertical direction and a movable rack 6b relatively arranged on both sides of the rotating gear 6a, the movable rack 6b is meshed with the rotating gear 6a, and a movable block 7 is arranged between one end of the movable rack 6b and the adjacent locking plate 5, and the rotating gear 6a can drive the two movable racks 6b to move relative to each other.

[0029] Furthermore, a return spring 8 is provided between one end of the moving rack 6 b away from the moving block 7 and the headrest housing 3 . When the return spring 8 is at its original length, the locking piece 5 is engaged with the fixing groove 4 .

[0030] Furthermore, a push rack 9 is horizontally slidably provided on one side of the headrest shell 3 , and the push rack 9 is meshed with the rotating gear 6 a , and the push rack 9 can drive the two movable racks 6 b to move relative to each other.

[0031] Furthermore, a pushing block 10 is provided at one end of the pushing rack 9 .

[0032] Furthermore, the pushing block 10 may abut against the outer wall of the headrest shell 3 . When the pushing block 10 abuts against the outer wall of the headrest shell 3 , the locking piece 5 is engaged with the fixing groove 4 .

[0033] Furthermore, one end of the moving block 7 close to the rotating gear 6 a can abut against the rotating gear 6 a . When the moving block 7 abuts against the rotating gear 6 a , a set distance is formed between the locking piece 5 and the fixing groove 4 .

[0034] Furthermore, a first positioning rod 11 is provided at one end of the moving rack 6b away from the moving block 7, and a second positioning rod 12 cooperating with the return spring 8 is provided in the headrest shell 3. Both the first positioning rod 11 and the second positioning rod 12 move through the adjacent return spring 8. When the moving block 7 contacts the rotating gear 6a, a set distance is provided between the first positioning rod 11 and the adjacent second positioning rod 12.

[0035] Furthermore, a bushing 13 cooperating with the guide rod 2 is symmetrically arranged in the headrest shell 3 , and the guide rod 2 can movably pass through the bushing 13 . A locking hole 14 cooperating with the locking piece 5 is formed on the bushing 13 .

[0036] Furthermore, the bushing 13 is made of wear-resistant material.

[0037] When the position of the headrest needs to be adjusted, the push block 10 is directly pulled outward, and the push block 10 drives the push rack 9 to move outward, thereby driving the rotating gear 6a to rotate, and also driving the moving rack 6b to move, driving the two moving blocks 7 and the locking piece 5 to approach each other, until the moving block 7 contacts the rotating gear 6a, and then the push block 10 cannot be pulled further, at this time, the locking piece 5 is separated from the fixing groove 4, and then the headrest of the car can be adjusted; after completing the adjustment of the headrest shell 3, the push block 10 can be directly released. After releasing the push block 10, the moving rack 6b, the moving block 7 and the locking piece 5 are pushed close to the fixing groove 4 under the elastic force of the return spring 8, so that the locking piece 5 is automatically engaged with the fixing groove 4, and the moving rack 6b drives the rotating gear 6a to rotate, thereby driving the push rack 9 to move, so that the push block 10 moves to contact the outer wall of the headrest shell 3; by pulling the push block 10, the headrest shell 3 can be unlocked, and the height adjustment of the headrest shell 3 can be achieved, the structure is simple, and it is convenient to adjust the headrest of the car.

[0038] By providing the reset spring 8, the automatic locking of the headrest housing 3 and the automatic reset of the push block 10 can be achieved, making the operation of adjusting the automobile headrest simpler and more convenient.

[0039] By providing the first positioning rod 11 and the second positioning rod 12 , the moving direction of the return spring 8 is limited, so that the moving process of the return spring 8 is more stable.

[0040] By providing the bushing 13 , the contact area between the headrest housing 3 and the guide rod 2 is increased, so that the connection between the headrest housing 3 and the guide rod 2 is more stable.

[0041] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0042] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An unlocking mechanism for a car seat headrest, characterized in that: The invention comprises a seat body (1), a guide rod (2) symmetrically arranged on the seat body (1) in a vertical direction, and a headrest shell (3) sleeved on the guide rod (2); a plurality of fixing grooves (4) are evenly arranged on the guide rod (2) in a horizontal direction; the fixing grooves (4) are located on a side of the guide rod (2) close to an adjacent guide rod (2); locking plates (5) which can be engaged with the fixing grooves (4) are symmetrically arranged on the headrest shell (3); and a driving mechanism (6) for driving the two locking plates (5) to move synchronously is arranged in the headrest shell (3).

2. The vehicle seat headrest unlocking mechanism according to claim 1, characterized in that: The driving mechanism (6) comprises a rotating gear (6a) arranged on the headrest shell (3) and rotatable in a vertical direction, and movable racks (6b) arranged on both sides of the rotating gear (6a), wherein the movable racks (6b) are meshed with the rotating gear (6a), and a movable block (7) is arranged between one end of the movable rack (6b) and the adjacent locking piece (5), and the rotating gear (6a) can drive the two movable racks (6b) to move relative to each other.

3. The vehicle seat headrest unlocking mechanism according to claim 2, characterized in that: A return spring (8) is provided between one end of the movable rack (6b) away from the movable block (7) and the headrest shell (3); when the return spring (8) is at its original length, the locking piece (5) is engaged with the fixing groove (4).

4. The vehicle seat headrest unlocking mechanism according to claim 2, characterized in that: A push rack (9) is horizontally slidably provided on one side of the headrest shell (3); the push rack (9) is meshed with the rotating gear (6a); and the push rack (9) can drive the two movable racks (6b) to move relative to each other.

5. The vehicle seat headrest unlocking mechanism according to claim 4, characterized in that: A pushing block (10) is provided at one end of the pushing rack (9).

6. The vehicle seat headrest unlocking mechanism according to claim 5, characterized in that: The pushing block (10) can abut against the outer wall of the headrest shell (3); when the pushing block (10) abuts against the outer wall of the headrest shell (3), the locking piece (5) is engaged with the fixing groove (4).

7. The vehicle seat headrest unlocking mechanism according to claim 3, characterized in that: One end of the moving block (7) close to the rotating gear (6a) can abut against the rotating gear (6a). When the moving block (7) abuts against the rotating gear (6a), a set distance is provided between the locking piece (5) and the fixing groove (4).

8. The vehicle seat headrest unlocking mechanism according to claim 7, characterized in that: A first positioning rod (11) is arranged at one end of the movable rack (6b) away from the movable block (7); a second positioning rod (12) matched with the return spring (8) is arranged in the headrest shell (3); the first positioning rod (11) and the second positioning rod (12) both move through the adjacent return spring (8); when the movable block (7) contacts the rotating gear (6a), a set distance is provided between the first positioning rod (11) and the adjacent second positioning rod (12).

9. The vehicle seat headrest unlocking mechanism according to claim 1, characterized in that: A bushing (13) matching with the guide rod (2) is symmetrically arranged in the headrest shell (3); the guide rod (2) can movably pass through the bushing (13); and a locking hole (14) matching with the locking plate (5) is provided on the bushing (13).

10. The vehicle seat headrest unlocking mechanism according to claim 9, characterized in that: The bushing (13) is made of wear-resistant material.

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