Seat angle adjuster, vehicle seat, and vehicle

Abstract

The application discloses a seat angle adjuster, a vehicle seat and a vehicle. The seat angle adjuster comprises a locking cam, an outer wall of the locking cam is provided with at least one matching area, each matching area comprises a plurality of first stop portions; a locking slider is reciprocally movable between a locking position and an unlocking position, the locking slider is provided with a plurality of second stop portions which are arranged at intervals, in the locking position, the locking slider cooperates with the locking cam to limit the rotation freedom of the locking cam, at least two first stop portions are respectively stopped on corresponding second stop portions, and the distance between the contact points of the at least two first stop portions and the corresponding second stop portions and the geometric center of the locking cam is the same; in the unlocking position, the locking slider cooperates with the locking cam to release the limitation on the locking cam. Thus, the locking stability between the fixed disc and the movable tooth disc can be improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a seat adjuster, a vehicle seat, and a vehicle. Background Technology

[0002] In related technologies, seat adjusters typically have multiple contact bosses on the locking plate to improve their locking strength. These bosses contact the locking cams respectively. However, for ease of installation, the structures of these bosses are different, which can easily lead to poor contact and thus affect the locking effect, leaving room for improvement. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a seat adjuster with high stability in the engagement between the locking slider and the locking cam, which is beneficial to improving the locking stability between the fixed plate and the movable gear plate.

[0004] According to an embodiment of the present invention, a seat adjuster includes: a locking cam, the outer peripheral wall of which is provided with at least one mating area, each mating area including a plurality of first stop portions; a locking slider, which is reciprocating between a locked position and an unlocked position, the locking slider being provided with a plurality of spaced-apart second stop portions; in the locked position, the locking slider cooperates with the locking cam to restrict the rotational freedom of the locking cam, at least two of the first stop portions respectively abut against corresponding second stop portions, and the contact points of at least two of the first stop portions and the corresponding second stop portions are equidistant from the geometric center of the locking cam; in the unlocked position, the locking slider cooperates with the locking cam to release the restriction on the locking cam.

[0005] According to an embodiment of the present invention, the seat adjuster improves the stability of the engagement between the locking slider and the locking cam by setting the contact points of multiple first stop portions and corresponding second stop portions at the same distance from the geometric center of the locking cam, which is beneficial to improving the locking stability between the fixed plate and the movable gear plate, and thus improving the reliability of the seat adjuster.

[0006] According to some embodiments of the present invention, in the unlocked position, the locking cam is rotatable and a plurality of first stop portions and a plurality of second stop portions are misaligned.

[0007] According to some embodiments of the seat adjuster of the present invention, each of the mating areas further includes a first mating groove, and a second mating groove is provided between two adjacent first stop portions of each mating area. In the circumferential direction of the locking cam, the first mating groove of each mating area is located on one circumferential side of a plurality of first stop portions. The locking slider is provided with a first insertion groove. In the circumferential direction of the locking cam, the first insertion groove is located on one circumferential side of a plurality of second stop portions. In the unlocked position, the plurality of second stop portions extend into the corresponding first mating groove and the second mating groove, and one of the first stop portions of each mating area extends into the first insertion groove.

[0008] According to some embodiments of the present invention, the depth of the first mating groove is greater than the depth of the second mating groove in the seat adjuster.

[0009] According to some embodiments of the present invention, in a seat adjuster, the outer peripheral wall of each of the first stop portions is formed as an arc surface.

[0010] According to some embodiments of the present invention, in the same cross section of the locking cam, a first line is defined connecting the contact point of each first stop portion to the geometric center of the locking cam, and a second line is defined connecting the contact point to the center of the circle containing the corresponding first stop portion. The first line and the second line have an included angle, and the cross section is perpendicular to the rotation axis of the locking cam.

[0011] According to some embodiments of the present invention, the included angle of the seat adjuster ranges from 1° to 6°.

[0012] According to some embodiments of the present invention, the seat adjuster further includes an unlocking cam, which cooperates with the locking cam to rotate synchronously therewith; the unlocking cam cooperates with the locking slider to drive the locking slider to reciprocate.

[0013] According to some embodiments of the present invention, the seat adjuster has a mating protrusion in the middle of the unlocking cam and a mating hole in the middle of the locking cam. The mating protrusion extends into the mating hole so that the unlocking cam and the locking cam rotate synchronously.

[0014] According to some embodiments of the present invention, in a seat adjuster, the outer peripheral wall of the mating protrusion is formed as a polygon, and the corners of the outer peripheral wall of the mating protrusion are rounded.

[0015] According to some embodiments of the present invention, a seat adjuster further includes a fixed plate and a return spring. The fixed plate is adapted to be connected to a seat cushion portion, and the return spring cooperates with the fixed plate and the locking cam respectively. The return spring is adapted to apply a force to the locking cam, the force causing the locking cam to tend to drive the unlocking cam to rotate so that the locking slider moves toward the locking position.

[0016] According to some embodiments of the present invention, in a seat adjuster, the locking cam has an annular protrusion at the center of the side wall facing the fixed plate, and the return spring is sleeved on the annular protrusion.

[0017] The present invention also proposes a vehicle seat.

[0018] A vehicle seat according to an embodiment of the present invention includes: a seat cushion portion, a seat back portion, and a seat adjuster according to any of the above embodiments. The seat adjuster includes a fixed plate and a movable gear plate, the fixed plate and the movable gear plate cooperating to define a receiving cavity; a locking cam and a locking slider are disposed within the receiving cavity; the fixed plate is connected to the seat cushion portion, and the movable gear plate is connected to the seat back portion.

[0019] According to an embodiment of the present invention, by setting the contact points of multiple first stop portions and corresponding second stop portions at the same distance from the geometric center of the locking cam, the stability of the engagement between the locking slider and the locking cam can be improved, which is beneficial to improving the locking stability between the fixed plate and the movable gear plate, improving the reliability of the seat adjuster, and enhancing the overall performance of the vehicle seat.

[0020] According to some embodiments of the present invention, a vehicle seat further includes a rotating handle, and the seat adjuster further includes an unlocking cam, the rotating handle extending axially through the seat adjuster and used to drive the unlocking cam to rotate.

[0021] The present invention also proposes a vehicle.

[0022] A vehicle according to an embodiment of the present invention includes: a vehicle seat according to any of the above embodiments; or a seat adjuster according to any of the above embodiments.

[0023] According to the vehicle of the present invention, by setting the contact points of multiple first stop portions and corresponding second stop portions at the same distance from the geometric center of the locking cam, the cooperation stability between the locking slider and the locking cam can be improved, which is beneficial to improving the locking stability between the fixed plate and the movable gear plate, improving the reliability of the seat adjuster, enhancing the overall performance of the vehicle seat, and strengthening the competitiveness of the vehicle.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the installation of a seat adjuster according to an embodiment of the present invention;

[0027] Figure 2 This is an exploded view of a seat adjuster according to an embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of a seat adjuster according to an embodiment of the present invention;

[0029] Figure 4 This is a front view of the locking cam according to an embodiment of the present invention;

[0030] Figure 5 This is a side view of the locking slider according to an embodiment of the present invention;

[0031] Figure 6 This is a diagram showing the engagement of the locking cam and the locking slider in the locking position according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the unlocking cam in the locked position according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the locking cam in the locking position according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the unlocking cam in the unlocking position according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the locking cam in the unlocked position according to an embodiment of the present invention;

[0036] Figure 11 This is a front view of an unlocking cam according to another embodiment of the present invention;

[0037] Figure 12 This is a cross-sectional view of an unlocking cam according to another embodiment of the present invention;

[0038] Figure 13 This is a schematic diagram of the installation of the return spring according to an embodiment of the present invention.

[0039] Figure label:

[0040] Seat adjuster 100, seat cushion 200, seat back 300, rotating handle 400.

[0041] Fixed disc 1, movable gear disc 2, internal gear ring 21, locking cam 3, annular protrusion 31, mating area 32, first mating groove 321, first stop part 322, second mating groove 323, mating hole 33.

[0042] Unlocking cam 4, mating protrusion 41, transition chamfer 411, unlocking groove 42, locking slider 5, unlocking protrusion 51, first insertion groove 52, second stop part 53, avoidance groove 54, meshing tooth 55, return spring 6, and engagement sleeve 7. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0044] Hereinafter, with reference to the accompanying drawings, a seat adjuster 100 according to an embodiment of the present invention will be described.

[0045] like Figures 1-13 As shown, the seat adjuster 100 according to an embodiment of the present invention includes: a locking cam 3 and a locking slider 5. The outer peripheral wall of the locking cam 3 is provided with at least one mating area 32, and each mating area 32 includes a plurality of first stop portions 322. The locking slider 5 can reciprocate between a locked position and an unlocked position. The locking slider 5 is provided with a plurality of spaced second stop portions 53. In the locked position, the locking slider 5 cooperates with the locking cam 3 to restrict the rotational freedom of the locking cam 3. At least two first stop portions 322 abut against the corresponding second stop portions 53 respectively. The contact points of at least two first stop portions 322 and the corresponding second stop portions 53 are equidistant from the geometric center of the locking cam 3. In the unlocked position, the locking slider 5 cooperates with the locking cam 3 to release the restriction on the locking cam 3.

[0046] This improves the stability of the engagement between the locking slider 5 and the locking cam 3, enhances the locking stability between the fixed disc 1 and the movable gear disc 2, and improves the reliability of the seat adjuster 100.

[0047] For example, refer to Figures 1-6As shown, the seat adjuster 100 includes a fixed plate 1, a movable gear plate 2, and a connecting sleeve 7. The fixed plate 1 is adapted to connect to the seat cushion portion 200 to attach the seat adjuster 100 to the seat cushion portion 200, and the movable gear plate 2 is adapted to connect to the seat back portion 300 to attach the seat adjuster 100 to the seat back portion 300. The fixed plate 1 and the movable gear plate 2 are rotatably engaged and fixed by the connecting sleeve 7. An installation space is defined between the fixed plate 1 and the movable gear plate 2. The installation space is used to assemble the other components of the seat adjuster 100 and can play a role in preventing dust, preventing internal lubricant leakage, and preventing external electrophoretic fluid intrusion. A locking part is formed on the inner side of the movable gear plate 2.

[0048] The seat adjuster 100 includes a locking cam 3 and a locking slider 5, both of which are mounted in the installation space. The locking cam 3 is rotatably mounted on the fixed plate 1. At least one mating area 32 is provided on the outer peripheral wall of the locking cam 3. The mating area 32 includes multiple first stop portions 322, which are spaced apart circumferentially along the locking cam 3. Simultaneously, the locking slider 5 can be located radially outward from the locking cam 3, opposite to the mating area 32. The locking slider 5 is constructed to be radially movable along the locking cam 3. Multiple second stop portions 53 are provided on the inner sidewall of the locking slider 5, which are spaced apart circumferentially along the locking cam 3 and correspond one-to-one with the multiple first stop portions 322.

[0049] Specifically, such as Figure 8 As shown, when the locking slider 5 moves outward to the locking position, at least two first stop portions 322 and at least two second stop portions 53 correspond one-to-one and stop. The locking cam 3 can cooperate with the locking slider 5 to restrict the rotational freedom of the locking cam 3, so that the locking cam 3 can limit the locking slider 5 to the locking position. The locking slider 5 can cooperate with the locking part to achieve circumferential limiting between the fixed plate 1 and the movable gear plate 2, thereby locking the seat cushion part 200 and the seat back part 300. Figure 10 As shown, when the locking slider 5 moves inward to the unlock position, the multiple first stop portions 322 can disengage from the multiple second stop portions 53, the locking slider 5 can cooperate with the locking cam 3 to release the restriction on the locking cam 3, and the locking slider 5 can disengage from the locking portion to unlock the fixed plate 1 and the movable gear plate 2, thereby realizing the unlocking of the seat cushion portion 200 and the seat back portion 300.

[0050] It should be noted that at least two first stop portions 322 and corresponding second stop portions 53 can be configured such that their contact points are at the same distance from the geometric center of the locking cam 3. For example, multiple first stop portions 322 and corresponding second stop portions 53 can be configured such that their contact points are at the same distance from the geometric center of the locking cam 3. This improves the contact stability between the locking slider 5 and the locking cam 3, enhances the locking effect, and reduces the structural complexity of the locking cam 3, facilitating manufacturing and assembly.

[0051] According to the embodiment of the present invention, the seat adjuster 100, by setting the contact points of a plurality of first stop portions 322 and the corresponding second stop portions 53 at the same distance from the geometric center of the locking cam 3, can improve the cooperation stability between the locking slider 5 and the locking cam 3, which is beneficial to improving the locking stability between the fixed plate 1 and the movable toothed plate 2, and improves the reliability of the seat adjuster 100.

[0052] In some embodiments of the present invention, such as Figure 10 As shown, in the unlocked position, the locking cam 3 is rotatable, and the multiple first stop portions 322 and multiple second stop portions 53 are staggered. This arrangement reduces the overall size of the seat adjuster 100 and improves the operational feel of the locking cam 3, thus enhancing the design rationality of the seat adjuster 100.

[0053] In some embodiments of the present invention, each mating region 32 further includes a first mating groove 321, and a second mating groove 323 is provided between two adjacent first stop portions 322 of each mating region 32. In the circumferential direction of the locking cam 3, the first mating groove 321 of each mating region 32 is located on one circumferential side of the plurality of first stop portions 322. The locking slider 5 is provided with a first insertion groove 52. In the circumferential direction of the locking cam 3, the first insertion groove 52 is located on one circumferential side of the plurality of second stop portions 53. In the unlocked position, the plurality of second stop portions 53 respectively extend into the corresponding first mating groove 321 and second mating groove 323, and one of the first stop portions 322 of each mating region 32 extends into the first insertion groove 52.

[0054] For example, refer to Figure 6 , Figure 8 and Figure 10As shown, the mating area 32 includes a first mating groove 321, and a second mating groove 323 is provided between any two adjacent first stop portions 322 in each mating area. In the circumferential direction of the locking cam 3, the first mating groove 321 of each mating area 32 is located on one side of the plurality of first stop portions 322 along the circumferential direction of the locking cam 3. At the same time, a first insertion groove 52 can be provided on the inner sidewall of the locking slider 5, and an avoidance groove 54 can be provided between any two adjacent second stop portions 53. In the circumferential direction of the locking cam 3, the first insertion groove 52 is located on one side of the plurality of second stop portions 53 along the circumferential direction of the locking cam 3.

[0055] Specifically, such as Figure 10 As shown, when the locking slider 5 moves inward to the unlocked position, multiple first stop portions 322 can be misaligned with multiple second stop portions 53. The multiple second stop portions 53 can extend into the first mating groove 321 and the second mating groove 323 respectively. Several of the multiple first stop portions 322 can extend into the clearance groove 54, and one of them can extend into the first insertion groove 52. The first stop portion 322 extending into the first insertion groove 52 can engage with the locking slider 5 in a circumferential limiting manner. Thus, a stable engagement between the locking slider 5 and the locking cam 3 can be achieved.

[0056] In some embodiments of the present invention, the depth of the first mating groove 321 is greater than the depth of the second mating groove 323. With the above arrangement, when the plurality of first stop portions 322 extend into the first mating groove 321 and the second mating groove 323 respectively, the first stop portions 322 can maintain a distance from the bottom wall of the first mating groove 321, which can reduce the friction between the locking cam 3 and the locking slider 5, and improve the operating feel of the locking cam 3.

[0057] In some embodiments of the present invention, such as Figure 6 As shown, the outer peripheral wall of each first stop portion 322 can be formed as an arc surface. With the above configuration, the scraping and friction when the first stop portion 322 and the second stop portion 53 slide relative to each other can be reduced, which helps to improve the service life and operating feel of the seat adjuster 100.

[0058] In some embodiments of the present invention, on the same cross section of the locking cam 3, the line connecting the contact point of each first stop portion 322 to the geometric center of the locking cam 3 is defined as the first line, and the line connecting the contact point to the center of the circle containing the corresponding first stop portion 322 is defined as the second line. The first line and the second line have an included angle, and the cross section is perpendicular to the rotation axis of the locking cam 3.

[0059] For example, refer to Figure 6As shown, the rotation axis of the vertical locking cam 3 has a cross-section. On the same cross-section of the locking cam 3, the contact point of the first stop portion 322 can be connected to the geometric center of the locking cam 3 by a line, and this line is called the first connecting line. Furthermore, the center of the circle containing the first stop portion 322 can be eccentrically arranged with respect to the geometric center of the locking cam 3. The contact point and the center of the corresponding circle containing the first stop portion 322 are connected by a line, and this line is called the second connecting line. An angle is formed between the first connecting line and the second connecting line. For example, the second connecting line can be located on the side of the first connecting line facing the locking direction.

[0060] With the above settings, when the first stop part 322 and the second stop part 53 abut against each other, the locking slider 5 and the locking cam 3 can achieve self-locking, which improves the locking stability between the seat cushion part 200 and the seat back part 300 and helps to improve the user's comfort.

[0061] In some embodiments of the present invention, the included angle α can be set to a range of 1°-6°. Specifically, the included angle α can be set to 2°; or, the included angle α can be set to 3.5°; or, the included angle α can be set to 5°, and the present invention does not limit this. By setting the above, the self-locking effect can be avoided by making the included angle too large, thereby improving the reliability of the locking cam 3.

[0062] It should be emphasized that when the included angle α between the first and second connecting lines is in the range of 4°-6°, the surface roughness requirement of the first stop part 322 is relatively low, usually only 0.08 to 0.1, which can be met by ordinary fine blanking process, making it easy to process and with low cost.

[0063] In some embodiments of the present invention, the locking portion is formed as an internal gear ring 21, and the locking slider 5 is provided with engaging teeth 55. In the locked position, the engaging teeth 55 engage with the internal gear ring 21. For example, see... Figures 2-3 As shown, the locking part can be constructed as an internal gear ring 21, which extends circumferentially along the movable gear disk 2. The outer side wall of the locking slider 5 is provided with meshing teeth 55. When the locking slider 5 moves outward to the locking position, the meshing teeth 55 can mesh with the internal gear ring 21, so that the locking slider 5 can circumferentially limit the movable gear disk 2.

[0064] The above settings can improve the limiting stability between the locking slider 5 and the movable gear plate 2, improve the reliability of the seat adjuster 100, and the meshing teeth 55 can cooperate with any position of the internal gear ring 21 to make the angle adjustment between the seat cushion part 200 and the seat back part 300 flexible, which is conducive to meeting different user needs.

[0065] In some embodiments of the present invention, such as Figure 2As shown, the seat adjuster 100 of this embodiment of the invention also includes an unlocking cam 4, which cooperates with a locking cam 3 to rotate synchronously with it; the unlocking cam 4 cooperates with a locking slider 5 to drive the locking slider 5 to reciprocate.

[0066] For example, refer to Figures 2-3 As shown, the seat adjuster 100 also includes an unlocking cam 4, which is mounted on the side of the locking cam 3 facing away from the fixed plate 1. The unlocking cam 4 cooperates with the locking cam 3 so that the unlocking cam 4 and the locking cam 3 can rotate synchronously. Simultaneously, an unlocking protrusion 51 can be provided on the side wall of the locking slider 5. The unlocking cam 4 has an unlocking groove 42 extending circumferentially. The unlocking protrusion 51 is movably inserted into the unlocking groove 42. When the unlocking cam 4 rotates, it can drive the locking slider 5 to reciprocate radially through the unlocking protrusion 51, allowing the locking slider 5 to move back and forth between the locked and unlocked positions. This configuration ensures the stability of the seat adjuster 100 when switching between the locked and unlocked positions, improving the reliability of the seat adjuster 100.

[0067] Specifically, such as Figures 7-10 As shown, in the locked position, the unlocking cam 4 can be driven to rotate in the first direction, so that the unlocking cam 4 can drive the locking cam 3 to rotate, so that the multiple first stop parts 322 can be misaligned with the multiple second stop parts 53. The locking slider 5 can also be driven to move inward to the unlocked position, so that the locking slider 5 disengages from the locking part, thereby realizing the unlocking between the seat cushion part 200 and the seat back part 300. Conversely, the seat adjuster 100 can be switched from the unlocked position to the locked position, which will not be described in detail here.

[0068] In some embodiments of the present invention, the unlocking cam 4 has a mating protrusion 41 in the middle, and the locking cam 3 has a mating hole 33 in the middle. The mating protrusion 41 extends into the mating hole 33 so that the unlocking cam 4 and the locking cam 3 rotate synchronously. For example, see reference to... Figure 3 , Figure 7 and Figure 8 As shown, a mating protrusion 41 can be formed in the middle of the unlocking cam 4, protruding towards the locking cam 3. The locking cam 3 has a mating hole 33 extending through the thickness direction in the middle, which matches the mating protrusion 41. The mating protrusion 41 extends into the mating hole 33 and engages with the locking cam 3, allowing the unlocking cam 4 and the locking cam 3 to rotate synchronously. This improves the stability of the engagement between the unlocking cam 4 and the locking cam 3, which is beneficial to improving the working stability of the seat adjuster 100. Furthermore, the structure of the unlocking cam 4 and the locking cam 3 is simple, facilitating processing and assembly.

[0069] In some embodiments of the present invention, such as Figures 7-8As shown, the outer peripheral wall of the mating protrusion 41 can be formed into a polygon, such as a rectangle, and the mating hole 33 can be correspondingly set as a polygon. By inserting the mating protrusion 41 into the mating hole 33, the circumferential positioning of the unlocking cam 4 and the locking cam 3 can be achieved. This simplifies the structure and reduces the difficulty of processing.

[0070] Furthermore, such as Figure 7 As shown, the corner of the outer peripheral wall of the mating protrusion 41 can be rounded. This design improves the structural strength of the mating protrusion 41 and prevents it from scratching other parts during installation, thus enhancing the reliability of the seat adjuster 100.

[0071] In another embodiment of the invention, such as Figures 11-12 As shown, the mating protrusion 41 can be constructed as a polygon, with the corners of the mating protrusion 41 disconnected. This design reduces the machining difficulty of the unlocking cam 4, thereby lowering costs, and also reduces the difficulty of mating the mating protrusion 41 with the locking cam 3.

[0072] In some embodiments of the present invention, a transition chamfer 411 may be provided at the connection between the mating protrusion 41 and the unlocking cam 4. This improves the structural strength and reliability of the mating protrusion 41.

[0073] In some embodiments of the present invention, the seat adjuster 100 of the present invention further includes a fixed plate 1 and a return spring 6. The fixed plate 1 is adapted to be connected to the seat cushion portion 200. The return spring 6 cooperates with the fixed plate 1 and the locking cam 3 respectively. The return spring 6 is adapted to apply a force to the locking cam 3. The force causes the locking cam 3 to have a tendency to drive the unlocking cam 4 to rotate so that the locking slider 5 moves toward the locking position.

[0074] For example, such as Figure 3 and Figure 13 As shown, the seat adjuster 100 also includes a fixed plate 1 and a return spring 6. The fixed plate 1 is adapted to be connected to the seat cushion portion 200. The return spring 6 is mounted on the fixed plate 1 and cooperates with the locking cam 3. The return spring 6 is used to apply a circumferential force to the locking cam 3. The force is used to drive the locking cam 3 to rotate the unlocking cam 4 so that the locking slider 5 has a tendency to move inward to the locking position.

[0075] Specifically, such as Figures 7-10As shown, when the user applies external force to the unlocking cam 4, the unlocking cam 4 can drive the locking cam 3 to rotate, so that the multiple first stop portions 322 and the multiple second stop portions 53 are misaligned. It can also drive the locking slider 5 to move inward to the unlock position, so that the locking slider 5 disengages from the locking engagement portion, thereby unlocking the seat cushion portion 200 and the seat back portion 300. The return spring 6 can apply force to the unlocking cam 4. At this time, if the user removes the external force, the return spring 6 can drive the locking cam 3 to drive the unlocking cam 4 to rotate in the opposite direction. The unlocking cam 4 can drive the locking slider 5 to return outward to the locking position, so that the locking slider 5 can engage with the locking portion, and the multiple first stop portions 322 can engage with the multiple second stop portions 53, thereby locking the seat cushion portion 200 and the seat back portion 300.

[0076] With the above settings, the reset spring 6 can drive the seat adjuster 100 to a normally locked state, which helps to reduce the difficulty of operating the seat adjuster and improves the reliability of the seat adjuster 100.

[0077] In some embodiments of the present invention, the locking cam 3 has an annular protrusion 31 at the center of its sidewall facing the fixed disk 1, and the return spring 6 is sleeved on the annular protrusion 31. For example, see reference Figures 2-4 As shown, an annular protrusion 31 can be provided in the middle of the side wall of the locking cam 3 facing the fixed plate 1. The annular protrusion 31 protrudes towards the fixed plate 1. The return spring 6 can be sleeved on the outer peripheral wall of the annular protrusion 31 and connected to the annular protrusion 31. The return spring 6 can apply force to the locking cam 3 through the annular protrusion 31. With the above arrangement, the connection stability between the return spring 6 and the locking cam 3 can be improved, and the reliability of the seat adjuster 100 can be improved.

[0078] In actual arrangement, an annular protrusion 31 can be arranged around the mating hole 33. The mating protrusion 41 can extend to the inner side of the annular protrusion 31 through the mating hole 33 and mate with the annular protrusion 31. This can increase the contact area between the unlocking cam 4 and the locking cam 3, improve the mating stability between the unlocking cam 4 and the locking cam 3, and help improve the layout rationality of the locking cam 3.

[0079] The present invention also proposes a vehicle seat.

[0080] According to an embodiment of the present invention, a vehicle seat includes: a seat cushion portion 200, a seat back portion 300, and a seat adjuster 100 according to any of the above embodiments. The seat adjuster 100 includes a fixed plate 1 and a movable gear plate 2, which cooperate to define a receiving cavity. A locking cam 3 and a locking slider 5 are disposed in the receiving cavity. The fixed plate 1 is connected to the seat cushion portion 200, and the movable gear plate 2 is connected to the seat back portion 300.

[0081] According to the vehicle seat of the present invention, by setting the contact points of multiple first stop portions 322 and corresponding second stop portions 53 at the same distance from the geometric center of the locking cam 3, the cooperation stability between the locking slider 5 and the locking cam 3 can be improved, which is beneficial to improving the locking stability between the fixed plate 1 and the movable gear plate 2, improving the reliability of the seat adjuster 100, and enhancing the overall performance of the vehicle seat.

[0082] In some embodiments of the present invention, the vehicle seat of the present invention further includes a rotating handle 400, and the seat adjuster 100 further includes an unlocking cam 4. The rotating handle 400 extends axially through the seat adjuster 100 and is used to drive the unlocking cam 4 to rotate. For example, see... Figure 1 As shown, the vehicle seat also includes a rotating handle 400, which includes a gripping part and a connecting part. The gripping part is designed for easy handling, such as a cylindrical or elliptical cylinder, while the connecting part is designed as a polygonal cylinder, such as a rectangle. The connecting part can pass through the seat adjuster 100 axially and cooperate with the unlocking cam 4, allowing the user to rotate the unlocking cam 4 by gripping the handle, thereby driving the locking slider 5 to move to the unlocked position. This improves the user's operating feel and helps to increase user satisfaction.

[0083] Of course, the grip can also be connected to the drive unit so that the seat adjuster 100 can be unlocked electrically, and the present invention does not limit this.

[0084] The present invention also proposes a vehicle.

[0085] A vehicle according to an embodiment of the present invention includes: a vehicle seat according to any of the above embodiments; or a seat adjuster 100 according to any of the above embodiments.

[0086] According to the vehicle of the present invention, by setting the contact points of multiple first stop portions 322 and corresponding second stop portions 53 at the same distance from the geometric center of the locking cam 3, the cooperation stability between the locking slider 5 and the locking cam 3 can be improved, which is beneficial to improving the locking stability between the fixed plate 1 and the movable gear plate 2, improving the reliability of the seat adjuster 100, enhancing the overall performance of the vehicle seat, and strengthening the competitiveness of the vehicle.

[0087] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0088] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0089] In the description of this invention, "a plurality of" means two or more.

[0090] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0091] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A seat adjuster (100), characterized in that, include: Locking cam (3), the outer peripheral wall of the locking cam (3) is provided with at least one mating area (32), each mating area (32) includes a plurality of first stop portions (322); The locking slider (5) can reciprocate between the locked position and the unlocked position. The locking slider (5) is provided with a plurality of spaced second stop portions (53). In the locked position, the locking slider (5) cooperates with the locking cam (3) to restrict the rotational freedom of the locking cam (3). At least two first stop portions (322) respectively abut against the corresponding second stop portions (53). The distance between the contact point of at least two first stop portions (322) and the corresponding second stop portions (53) and the geometric center of the locking cam (3) is the same. In the unlocked position, the locking slider (5) cooperates with the locking cam (3) to release the restriction on the locking cam (3); It also includes an unlocking cam (4), which cooperates with the locking cam (3) to rotate synchronously with it; The unlocking cam (4) cooperates with the locking slider (5) to drive the locking slider (5) to move back and forth.

2. The seat adjuster (100) according to claim 1, characterized in that, In the unlocked position, the locking cam (3) is rotatable and a plurality of first stop portions (322) and a plurality of second stop portions (53) are misaligned.

3. The seat adjuster (100) according to claim 1, characterized in that, Each of the mating areas (32) further includes a first mating groove (321), and a second mating groove (323) is provided between two adjacent first stop portions (322) of each of the mating areas (32). In the circumferential direction of the locking cam (3), the first mating groove (321) of each of the mating areas (32) is located on one side of the circumferential direction of the plurality of first stop portions (322). The locking slider (5) is provided with a first insertion groove (52), and in the circumferential direction of the locking cam (3), the first insertion groove (52) is located on one side of the circumferential direction of a plurality of second stop portions (53); In the unlocked position, a plurality of second stop portions (53) extend into the corresponding first mating groove (321) and second mating groove (323), and one of the first stop portions (322) of each mating area (32) extends into the first insertion groove (52).

4. The seat adjuster (100) according to claim 3, characterized in that, The depth of the first mating groove (321) is greater than the depth of the second mating groove (323).

5. The seat adjuster (100) according to claim 3, characterized in that, The outer peripheral wall of each of the first stop portions (322) is formed as an arc surface.

6. The seat adjuster (100) according to claim 5, characterized in that, On the same cross section of the locking cam (3), the line connecting the contact point of each first stop (322) to the geometric center of the locking cam (3) is defined as the first line, and the line connecting the contact point to the center of the circle where the corresponding first stop (322) is located is defined as the second line. The first line and the second line have an included angle, and the cross section is perpendicular to the rotation axis of the locking cam (3).

7. The seat adjuster (100) according to claim 6, characterized in that, The included angle ranges from 1° to 6°.

8. The seat adjuster (100) according to claim 1, characterized in that, The unlocking cam (4) has a mating protrusion (41) in the middle and the locking cam (3) has a mating hole (33) in the middle. The mating protrusion (41) extends into the mating hole (33) so that the unlocking cam (4) and the locking cam (3) rotate synchronously.

9. The seat adjuster (100) according to claim 8, characterized in that, The outer peripheral wall of the mating protrusion (41) is formed as a polygon, and the corners of the outer peripheral wall of the mating protrusion (41) are rounded.

10. The seat adjuster (100) according to claim 7, characterized in that, It also includes a fixed plate (1) and a return spring (6), the fixed plate (1) being adapted to be connected to the seat cushion portion (200), the return spring (6) cooperating with the fixed plate (1) and the locking cam (3) respectively, the return spring (6) being adapted to apply a force to the locking cam (3), the force causing the locking cam (3) to have a tendency to drive the unlocking cam (4) to rotate so that the locking slider (5) moves toward the locking position.

11. The seat adjuster (100) according to claim 10, characterized in that, The locking cam (3) has an annular protrusion (31) in the middle of the side wall facing the fixed disk (1), and the return spring (6) is sleeved on the annular protrusion (31).

12. A vehicle seat, characterized in that, include: The seat cushion portion (200), the seat back portion (300), and the seat adjuster (100) according to any one of claims 1-11, the seat adjuster (100) comprising a fixed plate (1) and a movable toothed plate (2), the fixed plate (1) and the movable toothed plate (2) cooperating to define a receiving cavity; The locking cam (3) and the locking slider (5) are located in the receiving cavity, the fixed plate (1) is connected to the seat cushion part (200), and the movable toothed plate (2) is connected to the seat back part (300).

13. The vehicle seat according to claim 12, characterized in that, It also includes a rotating handle (400), and the seat adjuster (100) also includes an unlocking cam (4), the rotating handle (400) extending axially through the seat adjuster (100) and used to drive the unlocking cam (4) to rotate.

14. A vehicle, characterized in that, include: The vehicle seat according to claim 12 or 13; or the seat adjuster (100) according to any one of claims 1-11.

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