Self-resetting seat height adjusting mechanism

Abstract

The utility model relates to a self-resetting seat height adjusting mechanism, and belongs to the technical field of seat adjusting, the self-resetting seat height adjusting mechanism comprises a support, a handle, a roller, an inhaul cable, a control mechanism, a positioning mechanism and a resetting mechanism, the handle is rotatably arranged on the support, the roller is rotatably arranged on the support, the inhaul cable is arranged on the roller and is connected with a height valve, and the control mechanism is connected with the positioning mechanism. The control mechanism is arranged on the handle and used for driving the roller to rotate along with rotation of the handle, the positioning mechanism is arranged on the support and used for positioning the roller, and the reset mechanism is arranged on the support and used for driving the handle to reset. The reset mechanism drives the handle to reset, so that a user can press the handle next time to adjust the height of the seat at the next gear, and the effect of adjusting the height of the automobile seat conveniently is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of seat adjustment technology, and particularly relates to a self-resetting seat height adjustment mechanism. Background Art

[0002] An automotive seat is a seat installed in a vehicle for passengers to sit on. To improve the comfort of different passengers, the height of the automotive seat can usually be adjusted.

[0003] Currently, the height adjustment of automotive seats is usually controlled by a height valve. The driver or passenger presses a handle on the seat, and the handle pulls the height valve through a cable, thereby controlling the lifting of the automotive seat through the height valve. However, after the user presses the handle to adjust the seat to the first gear height, the handle will stay in the current position, and the user needs to manually reset the handle before pressing the handle again to adjust the seat to the next gear height, resulting in poor convenience for adjusting the height of the automotive seat. Utility Model Content

[0004] In order to improve the convenience of adjusting the height of an automotive seat, the present application provides a self-resetting seat height adjustment mechanism.

[0005] The self-resetting seat height adjustment mechanism provided by the present application adopts the following technical solutions:

[0006] A self-resetting seat height adjustment mechanism includes a support, a handle, a roller, a cable, a control mechanism, a positioning mechanism, and a reset mechanism. The handle is rotatably arranged on the support, the roller is rotatably arranged on the support, the cable is arranged on the roller and connected to a height valve, the control mechanism is arranged on the handle and is used to drive the roller to rotate as the handle rotates, the positioning mechanism is arranged on the support and is used to position the roller, and the reset mechanism is arranged on the support and is used to drive the handle to reset.

[0007] By adopting the above technical solutions, the user presses the handle to make the handle rotate forward or backward. The handle drives the roller to rotate forward or backward through the control mechanism. The roller can tighten or release the cable during rotation, and the cable then pulls the height valve, thereby adjusting the first gear height of the seat. Then, the positioning mechanism positions the roller, and the reset mechanism drives the handle to reset, for the user to press again to adjust the seat height to the next gear, effectively improving the convenience of adjusting the height of the automotive seat.

[0008] Optionally, the control mechanism includes a push rod and a toothed ring. The push rod is arranged on the handle. Two toothed rings are coaxially sleeved on the roller. The toothed rings are both provided with ratchet teeth, and the directions of the ratchet teeth on the two toothed rings are opposite. The push rod is used to abut against the ratchet teeth on one of the toothed rings when the handle rotates.

[0009] By adopting the above technical solution, when the user rotates the handle, the handle drives the push rod to rotate, and the push rod can abut against the ratchet teeth of one of the toothed rings. As the handle continues to rotate, the push rod can squeeze the ratchet teeth on the toothed ring, thereby conveniently and quickly driving the roller to rotate.

[0010] Optionally, the push rod includes a mounting frame and two abutting heads. The mounting frame is arranged on the handle, and both of the two abutting heads are arranged on the mounting frame. One of the abutting heads is used to abut against the ratchet teeth of one of the toothed rings when the handle rotates forward, and the other abutting head is used to abut against the ratchet teeth of the other toothed ring when the handle rotates backward.

[0011] By adopting the above technical solution, the handle drives the mounting frame to rotate, and the mounting frame drives the two abutting heads to move. When the handle rotates forward, one of the abutting heads abuts against the ratchet teeth of one of the toothed rings. When the handle rotates backward, the other abutting head abuts against the ratchet teeth of the other toothed ring, thereby conveniently controlling the bidirectional rotation of the roller.

[0012] Optionally, the reset mechanism includes a reset spring. The reset spring is arranged on the support and connected to the mounting frame, and the reset spring always has a tendency to drive the mounting frame to drive the handle to reset so that both of the two abutting heads are away from the ratchet teeth.

[0013] By adopting the above technical solution, when the handle drives the mounting frame to rotate, the mounting frame squeezes the reset spring to cause the reset spring to deform. After the mounting frame drives the abutting head to drive the roller to rotate one gear position, when the user releases the handle, the reset spring restores its deformation, and can drive the mounting frame to drive the handle to reset to a position where both of the two abutting heads are away from the ratchet teeth, thereby resetting the handle.

[0014] Optionally, the positioning mechanism includes a rotating shaft and a tension spring. A plurality of positioning grooves for the rotating shaft to be inserted into are circumferentially spaced on the toothed ring. The rotating shaft is slidably arranged on the support in the direction towards the roller, and the tension spring is arranged on the support and used to drive the rotating shaft to always have a tendency to move towards the direction close to the roller.

[0015] By adopting the above technical solution, under the action of the force when the user presses the handle, it drives the roller to drive the toothed ring to rotate. The side wall of the positioning groove squeezes the rotating shaft to extrude the rotating shaft from the positioning groove, so that the roller can rotate normally under the action of the force of the user. After the user releases the handle, the tension spring drives the rotating shaft to slide towards the direction close to the roller, so that the rotating shaft abuts tightly in a positioning groove opposite to the rotating shaft at this time, and the roller can be conveniently and quickly positioned at the current position, improving the stability of the roller after adjustment.

[0016] Optionally, an idle stroke groove is provided on the toothed ring, and the idle stroke groove communicates with the ratchet teeth when the seat is adjusted to the maximum stroke.

[0017] By adopting the above technical solution, when the roller rotates to tighten or release the cable to adjust the height valve to the maximum stroke, and the user presses the handle again, when the handle drives the abutting head to move, the abutting head moves in the idle stroke groove, and the roller remains in place, so that after the seat is adjusted to the maximum stroke, the user can continue to press the handle, but the roller no longer tightens or releases the cable, reducing the possibility of damage to each component caused by the user pressing the handle and continuing to drive the roller to rotate after the seat height is adjusted to the maximum stroke.

[0018] Optionally, it further includes a fixing bracket for guiding one end of the cable close to the height valve, the fixing bracket is arranged on the seat, and the cable slides through the fixing bracket.

[0019] By adopting the above technical solution, the fixing bracket guides the movement of one end of the cable close to the height valve, improving the stability of the movement of one end of the cable close to the height valve, and further improving the stability of the cable pulling the height valve.

[0020] Optionally, a fixing block is provided on the support, and the cable slides through the fixing block.

[0021] By adopting the above technical solution, the fixing block guides the cable, further improving the stability of the cable.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The reset mechanism drives the handle to reset again, for the user to press next time to adjust the seat height to the next gear, effectively improving the convenience of adjusting the height of the car seat;

[0024] 2. After the seat is adjusted to the maximum stroke, the user can continue to press the handle, but the roller no longer tightens or releases the cable, reducing the possibility of damage to each component caused by the user pressing the handle and continuing to drive the roller to rotate after the seat height is adjusted to the maximum stroke. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the self-resetting seat height adjustment mechanism of the embodiment of the present application.

[0026] Figure 2 is an exploded schematic diagram of the embodiment of the present application.

[0027] Figure 3 is a schematic cross-sectional structural diagram of the embodiment of the present application.

[0028] Figure 4It is a schematic cross-sectional structure view from another perspective of an embodiment of the present application.

[0029] Figure 5 It is a schematic partial structure view when the seat of the embodiment of the present application is adjusted to the maximum stroke.

[0030] Reference signs: 1, support; 2, handle; 3, roller; 4, cable; 5, control mechanism; 51, push rod; 511, mounting bracket; 512, abutting head; 52, toothed ring; 521, positioning groove; 522, idle stroke groove; 6, positioning mechanism; 61, rotating shaft; 62, tension spring; 7, reset mechanism; 71, reset spring; 8, ratchet tooth; 9, fixing bracket; 10, fixing block. Detailed implementation manners

[0031] The following further elaborates on the present application in conjunction with the attached Figures 1-5 for a more detailed description.

[0032] The embodiment of the present application discloses a self-resetting seat height adjustment mechanism.

[0033] Referring to Figure 1 , Figure 2 , the self-resetting seat height adjustment mechanism includes a support 1, a handle 2, a roller 3, a cable 4, a control mechanism 5, a positioning mechanism 6, a reset mechanism 7 and a fixing bracket 9.

[0034] Referring to Figure 1 , Figure 2 , the support 1 is installed on the seat, the handle 2 is rotatably installed on the support 1, the roller 3 is rotatably installed on the support 1, one end of the cable 4 is installed on the roller 3, the other end of the cable 4 extends to be connected with the height valve, a fixing block 10 is installed on the bracket, the cable 4 slidably passes through the fixing block 10, the fixing bracket 9 is installed on the seat at a position close to one end of the cable 4 near the height valve, and one end of the cable 4 close to the height valve slidably passes through the fixing bracket 9.

[0035] When the roller 3 rotates forward or backward to tighten or release the cable 4, the fixing block 10 positions and guides one end of the cable 4 close to the support 1, and at the same time, the fixing bracket 9 positions and guides one end of the cable 4 close to the height valve, effectively improving the stability of the cable 4 during movement, and further improving the stability when the cable 4 pulls and controls the height valve.

[0036] Referring to Figure 2 , Figure 3, the control mechanism 5 is installed on the handle 2. The control mechanism 5 is used to drive the roller 3 to rotate as the handle 2 rotates. The control mechanism 5 includes a push rod 51 and a toothed ring 52. Two toothed rings 52 are coaxially sleeved on the roller 3, and the two toothed rings 52 are spaced along the axial direction of the roller 3. A plurality of ratchet teeth 8 are installed at intervals along the outer circumference of each of the two toothed rings 52, and the directions of the ratchet teeth 8 on the two toothed rings 52 are opposite; combined with Figure 4 , the push rod 51 is installed on the handle 2. The push rod 51 is used to abut against the ratchet teeth 8 on one of the toothed rings 52 when the handle 2 rotates. The push rod 51 includes a mounting bracket 511 and two abutting heads 512. The mounting bracket 511 is installed on the handle 2, and two abutting heads 512 are installed on the mounting bracket 511. One of the abutting heads 512 is used to abut against the ratchet teeth 8 on one of the toothed rings 52 when the handle 2 rotates forward, and the other abutting head 512 is used to abut against the ratchet teeth 8 on the other toothed ring 52 when the handle 2 rotates backward. When the handle 2 is in the initial position, neither of the two abutting heads 512 abuts against the ratchet teeth 8.

[0037] When the user rotates the handle 2 forward, the handle 2 drives the mounting bracket 511 to rotate. The mounting bracket 511 drives the abutting head 512 to rotate, so that one of the abutting heads 512 abuts against the ratchet teeth 8 on one of the toothed rings 52. As the handle 2 continues to drive the mounting bracket 511 to rotate, the abutting head 512 can drive the ratchet teeth 8 to drive the toothed ring 52 and the roller 3 to rotate forward. During the rotation of the roller 3, the cable 4 can be tightened, and the cable 4 acts on the height valve to adjust the height of the seat by one gear; when the user rotates the handle 2 backward, the handle 2 drives the other abutting head 512 to abut against the ratchet teeth 8 on the other toothed ring 52. As the handle 2 continues to drive the mounting bracket 511 to rotate, the abutting head 512 can drive the ratchet teeth 8 to drive the toothed ring 52 and the roller 3 to rotate backward. During the rotation of the roller 3, the cable 4 can be released, and the cable 4 acts on the height valve to adjust the height of the seat by one gear downward.

[0038] Refer to Figure 3 , Figure 5 , an idle stroke groove 522 is formed on the toothed ring 52. The idle stroke groove 522 is located at the ratchet teeth 8 on the toothed ring 52 when the abutting head 512 drives the ratchet teeth 8 to rotate to adjust the seat to the maximum height adjustment stroke. The idle stroke groove 522 communicates with the side where the ratchet teeth 8 drive the roller 3 to rotate to continue to adjust the seat height to the maximum stroke.

[0039] When the roller 3 rotates to tighten or release the cable 4 and acts on the height valve, so that the seat is adjusted to the maximum stroke of the highest or lowest position, the abutting head 512 abuts against the ratchet tooth 8 on the toothed ring 52 when the seat is adjusted to the maximum height adjustment stroke. When the user continues to press the handle 2, the handle 2 drives the abutting head 512 to continue moving towards the ratchet tooth 8, driving the roller 3 to rotate, and driving the seat height to continue moving towards the side of the maximum stroke adjustment. The abutting head 512 moves in the idle stroke groove 522, so that the roller 3 remains in place. Thus, after the seat is adjusted to the maximum stroke, the user can continue to press the handle 2, but the handle 2 drives the abutting head 512 to no longer abut against the ratchet tooth 8 to drive the roller 3 to rotate, and the roller 3 no longer tightens or releases the cable 4, reducing the possibility of damage to each component caused by the user pressing the handle 2 and continuing to drive the roller 3 to rotate after the seat height is adjusted to the maximum stroke.

[0040] Refer to Figure 2 、 Figure 3 , the positioning mechanism 6 is installed on the support 1. The positioning mechanism 6 is used to position the roller 3. The positioning mechanism 6 includes a rotating shaft 61 and a tension spring 62. A plurality of positioning grooves 521 are circumferentially spaced on the toothed ring 52. The positioning grooves 521 are used for the rotating shaft 61 to be inserted. The rotating shaft 61 is slidably installed on the support 1 in the direction towards the roller 3. The roller 3 faces the opening of the positioning groove 521. The tension spring 62 is installed on the support 1. The tension spring 62 is used to drive the rotating shaft 61 to always have a tendency to slide towards the direction close to the roller 3. The acting force of the tension spring 62 driving the rotating shaft 61 to abut against the inner wall of the positioning groove 521 is less than the acting force of the user rotating the handle 2 to drive the roller 3 to rotate.

[0041] When the user presses the handle 2 to drive the roller 3 to rotate, the roller 3 drives the toothed ring 52 to rotate. The inner wall of the positioning groove 521 on the toothed ring 52 squeezes the rotating shaft 61, and thus the rotating shaft 61 is pushed out of the positioning groove 521 during the rotation, so that the roller 3 can rotate normally. After adjusting a seat height adjustment gear, the user releases the handle 2, thereby releasing the acting force on the rotation of the roller 3 and the toothed ring 52. The inner wall of the positioning groove 521 releases the extrusion of the rotating shaft 61, and the tension spring 62 can drive the rotating shaft 61 to rotate towards the direction close to the roller 3, so that the rotating shaft 61 is inserted into the positioning groove 521 opposite to the rotating shaft 61 at present. By the rotating shaft 61 abutting against the inner wall of the positioning groove 521, the roller 3 can be positioned at the current position, improving the stability of the roller 3 after adjusting the seat height and enabling the seat to maintain the current height.

[0042] Refer to Figure 1 、 Figure 2, the reset mechanism 7 is installed on the support 1. The reset mechanism 7 is used to drive the handle 2 to reset. The reset mechanism 7 includes a reset spring 71. The reset spring 71 is installed on the support 1 and extends to the mounting bracket 511 and is connected to the mounting bracket 511. The reset spring 71 always has a tendency to drive the mounting bracket 511 to drive the handle 2 to reset so that both abutting heads 512 are away from the ratchet 8. In this embodiment, the reset spring 71 is made of spring steel and has the characteristic of high elastic deformation ability.

[0043] When the handle 2 drives the mounting bracket 511 to rotate, the mounting bracket 511 presses the reset spring 71 to drive the reset spring 71 to deform. After the mounting bracket 511 drives the abutting head 512 to act on the ratchet 8 to drive the roller 3 to rotate by one seat height adjustment gear, the user releases the handle 2 to relieve the force of the mounting bracket 511 on the reset spring 71. The reset spring 71 can then recover its deformation. During the process of the reset spring 71 recovering its deformation, it drives the mounting bracket 511 to drive the handle 2 to reset to the initial position where both abutting heads 512 are away from the ratchet 8, thereby resetting the handle 2 for the user to press again next time to adjust the seat height to the next gear, effectively improving the convenience of adjusting the height of the car seat.

[0044] The implementation principle of the self-resetting seat height adjustment mechanism in the embodiment of the present application is as follows: The user presses the handle 2, and the handle 2 drives the mounting bracket 511 to rotate. The mounting bracket 511 drives the abutting head 512 to move. The abutting head 512 abuts against the ratchet 8 to drive the roller 3 to rotate. During the rotation of the roller 3, the cable 4 can be tightened or released. The cable 4 then acts on the height valve to adjust the seat height by one gear. After the user releases the handle 2, the tension spring 62 drives the rotating shaft 61 to engage in the positioning groove 521 to position the roller 3. At the same time, the reset spring 71 drives the mounting bracket 511 to drive the handle 2 to reset to the initial position for the user to press the handle 2 again to adjust the seat height to the next gear, effectively improving the convenience of adjusting the height of the car seat.

[0045] 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 self-resetting seat height adjustment mechanism, characterized in that: The invention comprises a support (1), a handle (2), a roller (3), a cable (4), a control mechanism (5), a positioning mechanism (6) and a reset mechanism (7), wherein the handle (2) is rotatably arranged on the support (1), the roller (3) is rotatably arranged on the support (1), the cable (4) is arranged on the roller (3) and is connected to the height valve, the control mechanism (5) is arranged on the handle (2) and is used to drive the roller (3) to rotate as the handle (2) rotates, the positioning mechanism (6) is arranged on the support (1) and is used to position the roller (3), and the reset mechanism (7) is arranged on the support (1) and is used to drive the handle (2) to reset.

2. A self-resetting seat height adjustment mechanism according to claim 1, characterized in that: The control mechanism (5) comprises a push rod (51) and a toothed ring (52), wherein the push rod (51) is arranged on the handle (2), and two toothed rings (52) are coaxially sleeved on the roller (3), and ratchet teeth (8) are arranged on both of the two toothed rings (52), and the directions of the ratchet teeth (8) on the two toothed rings (52) are opposite, and the push rod (51) is used to abut against the ratchet teeth (8) on one of the toothed rings (52) when the handle (2) is rotated.

3. A self-resetting seat height adjustment mechanism according to claim 2, characterized in that: The push rod (51) comprises a mounting frame (511) and two abutment joints (512); the mounting frame (511) is arranged on the handle (2); the two abutment joints (512) are both arranged on the mounting frame (511); one of the abutment joints (512) is used to abut against a ratchet tooth (8) on one of the toothed rings (52) when the handle (2) rotates forward; and the other abutment joint (512) is used to abut against a ratchet tooth (8) on the other toothed ring (52) when the handle (2) rotates reversely.

4. A self-resetting seat height adjustment mechanism according to claim 3, characterized in that: The reset mechanism (7) comprises a reset spring (71), the reset spring (71) being arranged on the support (1) and connected to the mounting frame (511), the reset spring (71) always having a tendency to drive the mounting frame (511) to drive the handle (2) to reset until both abutment heads (512) are moved away from the ratchet teeth (8).

5. The self-resetting seat height adjustment mechanism according to claim 2, characterized in that: The positioning mechanism (6) comprises a rotating shaft (61) and a tension spring (62); a plurality of positioning grooves (521) for the rotating shaft (61) to be inserted into are circumferentially spaced apart on the toothed ring (52); the rotating shaft (61) is slidably arranged on the support (1) in a direction toward the roller (3); and the tension spring (62) is arranged on the support (1) and is used to drive the rotating shaft (61) to always have a tendency to move in a direction close to the roller (3).

6. A self-resetting seat height adjustment mechanism according to claim 5, characterized in that: An idle travel groove (522) is provided on the toothed ring (52), and the idle travel groove (522) is connected to the ratchet (8) when the seat is adjusted to a maximum travel.

7. The self-resetting seat height adjustment mechanism according to claim 1, characterized in that: It also includes a fixing frame (9) for guiding the end of the cable (4) close to the height valve, the fixing frame (9) being arranged on the seat, and the cable (4) being slidably arranged on the fixing frame (9).

8. The self-resetting seat height adjustment mechanism according to claim 1, characterized in that: A fixing block (10) is provided on the support (1), and the pull cable (4) is slidably inserted through the fixing block (10).

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