Headrest lifting mechanism

Abstract

The utility model relates to a headrest lifting mechanism, and belongs to the field of vehicle seats, the headrest lifting mechanism comprises a seat bracket and a headrest bracket, the seat bracket is provided with a limiting plate, the limiting plate is provided with a plurality of limiting holes along the vertical direction, the headrest bracket is provided with a clamp spring, the clamp spring comprises a bending part, and the bending part is embedded in the limiting hole. The clamping spring can be driven to move through movement of the headrest support, the bent part is made to move into the limiting holes with different heights, the clamping spring can be limited through the limiting holes, accordingly, the headrest is limited, and adjustment of the height of the headrest is achieved.

Description

Technical Field

[0001] This application relates to the field of vehicle seats, and particularly to a headrest lifting mechanism. Background Art

[0002] Currently, most automotive seat headrests have basic adjustment functions, such as tilting forward and backward and height adjustment, to meet the needs of different passengers. Traditional automotive headrest lifting mechanisms usually adjust the headrest height by manually operating mechanical rods or knobs. This method is cumbersome to operate and has low adjustment accuracy, unable to meet the needs of passengers to quickly adjust the headrest position. Summary of the Utility Model

[0003] To improve the above problems, this application provides a headrest lifting mechanism.

[0004] The headrest lifting mechanism provided by this application adopts the following technical solutions:

[0005] A headrest lifting mechanism includes a seat bracket and a headrest bracket. A limit plate is provided on the seat bracket. A plurality of limit holes are vertically formed in the limit plate. A snap spring is provided on the headrest bracket. The snap spring includes a bent portion, and the limit holes are for the bent portion to be inserted into.

[0006] By adopting the above technical solutions, when it is necessary to adjust the height of the headrest, the operator can directly move the headrest, thereby moving the headrest bracket. The movement of the headrest bracket can drive the movement of the snap spring, causing the bent portion to move into limit holes at different heights. The limit holes can limit the snap spring, thereby limiting the headrest and realizing the adjustment of the headrest height.

[0007] Preferably, a first mounting plate and a second mounting plate are fixedly connected to the seat bracket. The first mounting plate is located above the second mounting plate. The top of the limit plate is connected to the first mounting plate by bolts, and the bottom of the limit plate is connected to the second mounting plate by bolts.

[0008] By adopting the above technical solutions, the operator can install the top of the limit plate onto the first mounting plate and the bottom of the limit plate onto the second mounting plate, thereby realizing the fixed installation of the limit plate, which is convenient for the limit plate to limit the snap spring.

[0009] Preferably, a guide rod is provided on the seat bracket, a sliding plate is provided on the headrest bracket, a sliding block is fixedly connected to the sliding plate, and the sliding block is sleeved on the guide rod.

[0010] By adopting the above technical solutions, the guide rod can limit the sliding of the sliding block, and the sliding block can limit the sliding of the sliding plate, thereby limiting the sliding of the headrest bracket and improving the stability of the headrest bracket during movement.

[0011] Preferably, a fixing plate is fixedly connected to the first mounting plate, and the sliding block can slide to abut against the fixing plate.

[0012] By adopting the above technical solution, the fixing plate can limit the sliding of the sliding block, reducing the possibility of the sliding block sliding out of the guiding rod.

[0013] Preferably, a first positioning groove is formed at the top of the guiding rod, the bottom of the first positioning groove abuts against the fixing plate, a second positioning groove is formed at the bottom of the guiding rod, and the second positioning groove abuts against the second mounting plate.

[0014] By adopting the above technical solution, when installing the guiding rod, move the guiding rod so that the bottom of the first positioning groove abuts against the fixing plate and the second positioning groove abuts against the second mounting plate, and then connect the guiding rod with bolts, thereby realizing the fixed installation of the guiding rod, which is convenient for the guiding rod to slide and limit the headrest.

[0015] Preferably, an auxiliary rod slides vertically on the headrest bracket, the auxiliary rod can slide to abut against the retaining spring, the auxiliary rod is located above the retaining spring, and a control assembly for controlling the sliding of the auxiliary rod is provided on the headrest bracket.

[0016] By adopting the above technical solution, when the headrest needs to be adjusted, the operator can move the auxiliary rod through the control assembly to make the auxiliary rod abut against the retaining spring, so that the bent part moves out of the limiting hole, and then the headrest can be moved, improving the smoothness of the headrest movement.

[0017] Preferably, the control assembly includes a control board, a control rod and an elastic member. The control board is fixedly connected to the headrest bracket, the control rod is fixedly connected to the auxiliary rod, the control rod is located above the control board, the auxiliary rod is slidably connected to the control board, and the elastic member is used to make the auxiliary rod slide close to the control board.

[0018] Preferably, the elastic member is a spring, the spring is sleeved on the auxiliary rod, one end of the spring is fixedly connected to the control board, and the other end is fixedly connected to the auxiliary rod.

[0019] By adopting the above technical solution, when the headrest needs to be adjusted, the operator can press the control rod. The movement of the control rod can drive the movement of the auxiliary rod to make the auxiliary rod abut against the retaining spring and move the bent part out of the limiting hole. When the headrest is adjusted to the appropriate position, the operator can stop pressing the control rod. At this time, the auxiliary rod moves away from the retaining spring under the action of the spring, so that the bent part is embedded into the limiting hole again, realizing the adjustment and positioning of the headrest.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. By providing a limit plate, limit holes, a snap ring, and a bent portion, when the height of the headrest needs to be adjusted, the operator can directly move the headrest, thereby moving the headrest bracket. The movement of the headrest bracket can drive the movement of the snap ring, causing the bent portion to move into limit holes with different heights. The limit holes can limit the snap ring, thereby limiting the headrest and achieving the adjustment of the headrest height.

[0022] 2. By providing an auxiliary rod and a control assembly, when the headrest needs to be adjusted, the operator can move the auxiliary rod through the control assembly, causing the auxiliary rod to abut against the snap ring, thereby moving the bent portion out of the limit hole. After that, the headrest can be moved, improving the smoothness of the headrest movement. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram for showing the connection between the seat bracket and the headrest bracket in the first embodiment of the present application.

[0024] Figure 2 is a schematic structural diagram for showing the overall structure of the first mounting plate, the second mounting plate, the limit plate, and the snap ring in the first embodiment of the present application.

[0025] Figure 3 is a schematic structural diagram for showing the overall structure of the headrest lifting mechanism in the first embodiment of the present application.

[0026] Figure 4 is a schematic structural diagram for showing the overall structure of the guide rod in the first embodiment of the present application.

[0027] Figure 5 is a schematic structural diagram for showing the overall structure of the control assembly and the snap ring in the second embodiment of the present application.

[0028] Figure 6 is a schematic structural diagram for showing the overall structure of the control assembly and the snap ring in the second embodiment of the present application.

[0029] Description of the Reference Numerals: 1, seat bracket; 11, first mounting plate; 111, fixing plate; 12, second mounting plate; 13, guide rod; 131, first positioning groove; 132, second positioning groove; 2, headrest bracket; 21, sliding plate; 22, sliding block; 23, auxiliary rod; 3, limit plate; 31, limit hole; 4, snap ring, 41, bent portion; 5, control assembly; 51, control board; 52, control rod; 53, spring. Detailed Embodiments

[0030] To make the objects, features, and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0031] The following will further elaborate on the present application Figure 1-6 in further detail.

[0032] Embodiment 1:

[0033] An embodiment of the present application discloses a headrest lifting mechanism, as Figure 1 and 2 shown, which includes a seat bracket 1 and a headrest bracket 2. A limiting plate 3 is provided on the base bracket, and a plurality of limiting holes 31 are vertically formed on the limiting plate 3. The headrest is sleeved on the headrest bracket 2, and a snap spring 4 is provided on the headrest bracket 2. The snap spring 4 includes a bent portion 41, and the limiting holes 31 are for the bent portion 41 of the outer shell to be inserted.

[0034] As Figure 1 and 2 shown, a first mounting plate 11 and a second mounting plate 12 are fixedly connected to the seat bracket 1. The first mounting plate 11 is located above the second mounting plate 12, and both the first mounting plate 11 and the second mounting plate are connected to the seat bracket 1 by bolts. The top of the limiting plate 3 is connected to the first mounting plate 11 by bolts, and the bottom of the limiting plate 3 is connected to the second mounting plate 12 by bolts. When installing the limiting plate 3, the operator can move the limiting plate 3 to make the top of the limiting plate 3 fit with the first mounting plate 11, and then screw in the bolts to complete the installation of the limiting plate 3 and the first mounting plate 11; when installing the limiting plate 3, the operator can move the limiting plate 3 to make the bottom of the limiting plate 3 fit with the second mounting plate 12, and then screw in the bolts to complete the installation of the limiting plate 3 and the second mounting plate 12.

[0035] As Figure 3 and 4As shown, a guide rod 13 is provided between a first mounting plate 11 and a second mounting plate 12. A sliding plate 21 is provided on a headrest bracket 2, and a sliding block 22 is fixedly connected to the sliding plate 21. The sliding block 22 is sleeved on the guide rod 13. When adjusting the height of the headrest, the movement of the headrest bracket 2 can drive the movement of the sliding plate 21, and the movement of the sliding plate 21 can drive the movement of the sliding block 22. The guide rod 13 can limit the sliding block 22, thereby limiting the headrest bracket 2 and improving the stability of the headrest bracket 2 during sliding. A fixing plate 111 is fixedly connected to the first mounting plate 11. A first positioning groove 131 is formed at the top of the guide rod 13, and the bottom of the first positioning groove 131 abuts against the fixing plate 111; a second positioning groove 132 is formed at the bottom of the guide rod 13, and the second positioning groove 132 abuts against the second mounting plate 12. When installing the guide rod 13, the fixing plate 111 can limit the top of the guide rod 13, and the second mounting plate 12 limits the bottom of the guide rod 13, contributing to

[0036] The implementation principle of a headrest lifting mechanism according to an embodiment of the present application is as follows:

[0037] When the height of the headrest needs to be adjusted, an operator can move the headrest, thereby driving the movement of the headrest bracket 2. The movement of the headrest bracket 2 can drive the movement of the clamping spring 4 and the sliding plate 21. The limiting plate 3 can limit the bent portion 41, thereby limiting the headrest; the guide rod 13 can limit the sliding block 22, thereby limiting the sliding plate 21 and improving the stability of the headrest during movement.

[0038] Embodiment Two:

[0039] As Figure 5 and 6As shown in the figure, based on the first embodiment of the present application, an auxiliary rod 23 slides vertically on the headrest bracket 2. The auxiliary rod 23 is located above the snap spring 4 and can slide to abut against the snap spring 4. A control assembly 5 for controlling the sliding of the auxiliary rod 23 is provided on the headrest bracket 2. The control assembly 5 includes a control board 51, a control rod 52 and an elastic member. The control board 51 is fixedly connected to the headrest bracket 2, and the auxiliary rod 23 is slidably connected to the control board 51. The control rod 52 is fixedly connected to the auxiliary rod 23, and the control rod 52 is located above the control board 51. The elastic member is a spring 53. The spring 53 is sleeved on the auxiliary rod 23. One end of the spring 53 is fixedly connected to the control board 51, and the other end is fixedly connected to the auxiliary rod 23. In a natural state, the spring 53 applies a pulling force to the auxiliary rod 23, causing the auxiliary rod 23 to move closer to the control board 51. When the height of the headrest needs to be adjusted, the operator can press the control rod 52. The movement of the control rod 52 can drive the movement of the auxiliary rod 23, causing the auxiliary rod 23 to abut against the snap spring 4, moving the bent portion 41 out of the limiting hole 31, and then the height of the headrest can be adjusted. When the headrest is adjusted to the appropriate height, the operator stops pressing the control rod 52. The auxiliary rod 23 rebounds under the action of the spring 53, and the auxiliary rod 23 moves away from the snap spring 4. At this time, the bent portion 41 is embedded in the limiting hole 31 to limit the headrest, realizing the height adjustment of the headrest.

[0040] The implementation principle of a headrest lifting mechanism according to an embodiment of the present application is as follows:

[0041] When the headrest needs to be adjusted, the operator can press the control rod 52 to move the bent portion 41 out of the limiting hole 31, and then the headrest can be adjusted; when the headrest is adjusted to the appropriate position, the operator stops pressing the control rod 52. At this time, the bent portion 41 is embedded in the limiting hole 31 to realize the limitation of the headrest, thereby realizing the height adjustment of the headrest.

[0042] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A headrest lifting mechanism, characterized in that: It includes a seat bracket (1) and a headrest bracket (2). A limiting plate (3) is provided on the seat bracket (1). A number of limiting holes (31) are vertically formed on the limiting plate (3). A snap spring (4) is provided on the headrest bracket (2). The snap spring (4) includes a bent portion (41), and the bent portion (41) is embedded in the limiting hole (31).

2. The headrest lifting mechanism according to claim 1, characterized in that: A first mounting plate (11) and a second mounting plate (12) are fixedly connected to the seat bracket (1). The first mounting plate (11) is located above the second mounting plate (12). The top of the limiting plate (3) is connected to the first mounting plate (11) by bolts, and the bottom of the limiting plate (3) is connected to the second mounting plate (12) by bolts.

3. The headrest lifting mechanism according to claim 2, characterized in that: A guide rod (13) is provided on the seat bracket (1). A sliding plate (21) is provided on the headrest bracket (2). A sliding block (22) is fixedly connected to the sliding plate (21), and the sliding block (22) is sleeved on the guide rod (13).

4. The headrest lifting mechanism according to claim 3, wherein: A fixing plate (111) is fixedly connected to the first mounting plate (11), and the sliding block (22) can slide to abut against the fixing plate (111).

5. The headrest lifting mechanism according to claim 4, characterized in that: A first positioning groove (131) is formed at the top of the guide rod (13), and the bottom of the first positioning groove (131) abuts against the fixing plate (111). A second positioning groove (132) is formed at the bottom of the guide rod (13), and the second positioning groove (132) abuts against the second mounting plate (12).

6. The headrest lifting mechanism according to claim 1, wherein: An auxiliary rod (23) slides vertically on the headrest bracket (2). The auxiliary rod (23) can slide to abut against the snap spring (4). The auxiliary rod (23) is located above the snap spring (4). A control assembly (5) for controlling the sliding of the auxiliary rod (23) is provided on the headrest bracket (2).

7. The headrest lifting mechanism according to claim 6, wherein: The control assembly (5) includes a control plate (51), a control rod (52) and an elastic member. The control plate (51) is fixedly connected to the headrest bracket (2). The control rod (52) is fixedly connected to the auxiliary rod (23). The control rod (52) is located above the control plate (51). The auxiliary rod (23) is slidably connected to the control plate (51), and the elastic member is used to make the auxiliary rod (23) slide close to the control plate (51).

8. A headrest lifting mechanism according to claim 7, characterized in that: The elastic member is a spring (53). The spring (53) is sleeved on the auxiliary rod (23). One end of the spring (53) is fixedly connected to the control plate (51), and the other end is fixedly connected to the auxiliary rod (23).

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