CN110053535A - Clutch pack, device for regulating chair angle and seat assembly - Google Patents

Abstract

The present invention provides a kind of clutch packs for device for regulating chair angle.The clutch pack includes: annular element, and wherein annular element has side wall and at least one first guiding groove on side wall；With the clutch being located in annular element, wherein the side of clutch further includes the first guide posts being contained in the first guiding groove.When annular element rotates to rest position from normal position under the effect of external force, the first guide posts are mobile in the first guiding groove to move clutch in the axial direction to release and be linked to deactivate seat back angle regulatory function with the locking plate of device for regulating chair angle.

Description

Clutch assembly, seat angle adjustment device and seat assembly

technical field

The present invention relates to a clutch assembly, a seat angle adjusting device and a seat assembly including the clutch assembly.

Background technique

In vehicles, seats are often equipped with angle adjustment devices to provide a better seatback position for passengers. The angle adjustment device includes an operating handle that is rotatable between a locked position and an unlocked position, wherein the angle of the seat back can be adjusted when the operating handle is in the unlocked position. But at some point it is not desirable for the seat back to be adjusted. For example, when a child seat is installed in the rear row or there is a passenger, the angle adjustment function is not expected to be activated. Therefore, there is a need for a device that can deactivate the angle adjustment function.

SUMMARY OF THE INVENTION

According to an aspect of the present invention, a clutch assembly for a seat angle adjustment device is provided. The clutch assembly includes: an annular member having an annular wall and at least one first guide groove on the annular wall, the first guide groove including a first groove portion and a second groove portion; and within the annular member The clutch, wherein the side of the clutch further includes a first guide post accommodated in the first guide groove. When the ring member rotates from the normal position to the deactivated position under the action of the external force, the first guide post moves to the first groove portion in the second groove portion of the first guide groove to move the clutch in the axial direction to move the clutch in the axial direction. Unlink with the locking plate of the seat angle adjustment device to deactivate the seat back angle adjustment function.

In one embodiment, the first guide groove of the annular member includes a first groove portion, a second groove portion extending in the circumferential direction, and a third groove portion connecting the first groove portion and the second groove portion, wherein the first groove portion The first groove portion is parallel to the second groove portion and is spaced apart in the axial direction, and the first groove portion is closer to the end of the annular wall than the second groove portion; wherein the clutch has a first surface, a second surface, a central opening and a center at least one second guide slot spaced apart and extending circumferentially, wherein the second guide slot is defined by a first arcuate inner wall and a second arcuate inner wall, the first arcuate inner wall being closer relative to the second arcuate inner wall the side of the clutch, wherein the second guide groove further includes a protrusion extending radially inward from the first arcuate inner wall, the third surface of the protrusion is flush with the first surface of the clutch, and the fourth surface of the protrusion is flush with the clutch the second surface of the spaced apart, wherein the raised side and the second arcuate inner wall and the first arcuate inner wall define a fourth groove portion, and the first and second arcuate inner walls of the second guide groove define a fifth groove portion, The fourth groove portion is closer to the end of the annular wall than the fifth groove portion.

In another embodiment, the ring member includes a centrally located sleeve to accommodate the pivot shaft, and further comprises a first reset member disposed between the ring member and the pivot shaft, the first reset member being connected to the ring member at one end and the other end of the member. Connected to the pivot shaft, when the external force is removed, the biasing force of the first reset element causes the ring to rotate from the deactivated position to the normal position.

In another embodiment, the ring member includes three first guide grooves, wherein the clutch further includes three corresponding first guide posts and three second guide grooves, and the clutch further includes a central opening and an edge located at the central opening. of multiple positioning slots.

According to another aspect of the present invention, there is provided a seat angle adjusting device, comprising: a housing having an inner gear ring; an end plate opposite to the housing; and an adjustment assembly located between the housing and the end plate, Containing: a clutch assembly, wherein the clutch assembly includes a ring member that rotates between a normal position and a deactivated position, wherein the ring member has a side wall and at least one first guide groove on the side wall; located within the ring member and axially A clutch that moves in a direction, wherein the clutch is provided with a first guide post that is matched with the first guide groove; at least one lock plate is located in the housing and engaged with the clutch, and the outer edge of the lock plate has external teeth matched with the inner gear ring ; and a cam connected to the clutch and driving the locking plate to move in the radial direction; wherein under the action of an external force, when the ring member rotates from the normal position to the deactivated position, the clutch moves in the axial direction to release the linkage with the locking plate position to keep the outer teeth of the locking plate engaged with the inner ring gear of the housing to deactivate the seat back angle adjustment function.

In one embodiment, the ring includes a body portion and a sleeve connected to the body portion and coaxial with the ring portion, wherein the sleeve is connected to the body portion via a plurality of arms.

In another embodiment, the annular part is an integrally formed part, the side wall is an annular wall on the main body part, the annular wall forms a receiving space for accommodating the clutch, and the main body part includes an end wall.

In another embodiment, the first guide groove includes a first groove portion extending in the circumferential direction, a second groove portion, and a third groove portion connecting the first groove portion and the second groove portion, wherein the first groove portion is connected to the The second grooves are parallel and spaced apart in the axial direction, the first grooves are further away from the locking plate than the second grooves, wherein the axially spaced distance between the first and second grooves defines the clutch displacement in the axial direction.

In another embodiment, the clutch is annular, the clutch includes a first surface, a second surface opposite the first surface and facing the locking plate, and a side connecting the first surface and the second surface, wherein the first guide post is located at The sides of the clutch and extend radially outward.

In another embodiment, the clutch has a central opening and at least one second guide groove spaced from the central opening and extending circumferentially, the second guide groove being defined by the first arcuate inner wall and the second arcuate inner wall , the first arc-shaped inner wall is closer to the side of the clutch than the second arc-shaped inner wall, wherein the second guide groove further comprises a bulge extending inward from the first arc-shaped wall, and the bulging third surface is in contact with the first arc-shaped wall of the clutch. The surface is flush, and the raised fourth surface is spaced apart from the second surface of the plate body, wherein the raised side and the second arc-shaped inner wall and the first arc-shaped inner wall define a fourth groove portion, and the first arc-shaped inner wall of the second guide groove defines a fourth groove. One, the second arcuate inner wall and the raised fourth surface define a fifth groove portion, and the fourth groove portion is closer to the end of the annular wall than the fifth groove portion.

In another embodiment, the locking plate has a second guide post extending toward the clutch, and when the ring is in the normal position, the second guide post can move within the fourth groove portion of the second guide groove when the clutch rotates Enables radial inward movement of the locking plate so that the outer teeth on the locking plate are disengaged from the inner ring gear of the housing to perform angular adjustment of the seat back, wherein when the ring is rotated to the deactivated position, the first guide of the clutch The guide post moves from the second groove portion of the first guide groove to the first groove portion via the third groove portion so that the clutch is moved towards the end wall of the ring member, so that the second guide post of the locking plate is moved from the fourth groove of the clutch The portion moves to the fifth groove portion and cannot move with the clutch to keep the outer teeth of the locking plate in mesh with the inner gear of the housing to deactivate the angle adjustment.

In another embodiment, the clutch is provided with at least one locating groove located at the edge of the central hole and communicated with the central opening, and the cam is provided with a corresponding locating pin extending toward the clutch to engage with the locating groove of the clutch to limit the clutch and the cam relative motion in the circumferential direction.

In another embodiment, the seat angle adjustment device further includes a handle assembly including an operating handle and a pivot shaft connected with the handle, the pivot shaft passing through the end plate, the adjustment assembly and the housing.

In another embodiment, the seat angle adjusting device further includes a first restoring element disposed between the ring member and the pivot shaft, one end of the first restoring member is connected to the ring member, and the other end is connected to the pivot shaft.

In another embodiment, the ring member includes three first guide grooves, wherein the clutch further includes three corresponding first guide posts and three second guide grooves, and the clutch further includes a central opening and an edge located at the central opening. of multiple positioning slots.

In another embodiment, the seat angle adjusting device further comprises a driving device connected to the ring member, the driving device comprising a driving arm connected to the ring member and a shutter connected to the driving arm, and the external force applied to the shutter rotates Ring piece.

In another embodiment, the seat angle adjustment device further comprises a drive means connected to the ring member, the drive means being a motor, the motor rotating the ring member in the normal position and the deactivated position.

According to another aspect of the present invention, a seat assembly is provided, comprising: a backrest; a seat cushion; an angle adjusting device connected between the backrest and the seat cushion, the angle adjusting device comprising:

a housing having a ring gear; an end plate opposite the housing; an adjustment assembly located between the housing and the end plate; wherein the adjustment assembly includes: a clutch assembly, wherein the clutch assembly includes: in a normal position and deactivated A ring member that rotates between positions, wherein the annular wall of the ring member is provided with a first guide groove; a clutch located in the ring member and movable in the axial direction, the side of the clutch is provided with at least one guide groove received in the first guide groove a first guide post; a lock plate located in the end plate and engaged with the clutch, the outer edge of the lock plate has external teeth that cooperate with the inner gear ring; and a cam connected to the clutch and driving the lock plate to move in a radial direction ; wherein the rotation of the ring between the normal position and the deactivated position moves the clutch in the axial direction, wherein when the ring is in the deactivated position, the outer teeth of the locking plate and the ring gear remain engaged to deactivate the seat Angle adjustment of the seat back.

In one embodiment, the first guide groove includes a circumferentially extending first groove portion, a second groove portion, and a third groove portion connecting the first groove portion and the second groove portion, wherein the first groove portion and the second groove portion The grooves are parallel and spaced apart in the axial direction. In the normal position, the first guide post of the clutch is located in the second groove of the first guide groove, and when the ring member is rotated from the normal position to the deactivated position, The first guide post moves into the first groove portion through the third groove portion.

In another embodiment, the seat assembly further includes a handle assembly including an operating handle and a pivot shaft connected to the operating operating handle and passing through the adjustment assembly; a drive arm connected to the ring and a stopper connected to the drive arm The plate, bezel aligns with the seat's safety seat interface, and the insertion of the safety seat latch drives the clutch to the deactivated position.

One or more features and/or advantages of the present invention will become apparent from the following detailed description of one or more embodiments, taken in conjunction with the accompanying drawings.

Description of drawings

1 depicts a schematic diagram of a seat assembly embodying one or more example embodiments of the present invention.

FIG. 2 depicts an enlarged partial view of the seat assembly of FIG. 1 , showing a clutch assembly of the seat angle adjustment device and a drive for the clutch assembly.

FIG. 3 depicts a perspective view of the seat angle adjustment device of FIG. 1 .

FIG. 4 depicts an exploded perspective view of the seat angle adjustment device of FIG. 3 .

FIG. 5 depicts a schematic diagram of the adjustment assembly of the seat angle adjustment device of FIG. 4 .

FIG. 6 depicts an exploded perspective view of the adjustment assembly of the seat angle adjustment device of FIG. 5 .

FIG. 7 depicts another perspective exploded view of the adjustment assembly of the seat angle adjustment device of FIG. 5 .

FIG. 8A depicts a schematic view of the clutch assembly of FIG. 5 in a normal position.

FIG. 8B depicts a schematic diagram of the clutch assembly of FIG. 5 in a deactivated position.

Figure 8C depicts a schematic diagram of the positional relationship of the clutch relative to the locking plate when the clutch assembly is in the deactivated position as shown in Figure 8B.

Detailed ways

As required, specific embodiments of the present invention are disclosed in this specification; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention and may be embodied in various and alternative forms. The drawings are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

Please refer to FIG. 1 , which depicts a schematic diagram of a seat assembly 100 of the present invention. In one or more embodiments, the seat assembly 100 may be a vehicle seat. Vehicle seats are usually equipped with angle adjustment devices to adjust the backrest angle to provide better comfort for passengers. However, when a child seat is installed on the rear seat or a passenger is seated, it is not desirable that the angle adjustment device of the seat is triggered to rotate the backrest. Therefore, in one or more embodiments, the present application provides an angle adjustment device with a function of deactivating the angle adjustment. In one or more embodiments, the seat assembly 100 includes a seat cushion 102 , a backrest 104 , and an angular adjustment coupled between the seat cushion 102 and the backrest 104 to allow the backrest 104 to pivot relative to the seat cushion 102 device 106 .

Referring to FIG. 2 , an enlarged partial view of the seat assembly of FIG. 1 is depicted, showing the clutch assembly 144 of the seat angle adjustment device 106 and the drive mechanism 205 of the clutch assembly 144 . In one or more embodiments, the seat assembly 100 further includes a child seat interface 210 . When the child seat is installed to the seat assembly 100, the child seat insert pin 400 applies a force F to the flapper 208 of the drive 205 to rotate the clutch assembly 144 to the deactivated position disabling the seat's angular adjustment function. Please refer to the following for further description of the specific structure of the angle adjustment device 106 .

With reference to FIG. 3 and further reference to FIG. 4 , FIG. 3 depicts a perspective view of the angle adjustment device 106 of FIG. 1 . FIG. 4 depicts an exploded perspective view of the angle adjustment device 106 of FIG. 3 . In one or more embodiments, the angle adjustment device 106 includes a housing 110 mounted to the side bracket of the backrest 104 , an end plate 112 mounted to the side bracket of the seat cushion 102 , an adjustment assembly located between the housing 110 and the end plate 112 114 , handle assembly 116 and drive 205 . In one or more embodiments, the housing 110 includes a first end wall 118 having a first central aperture 120 and a first annular wall 122 extending from the first end wall 118 and having a ring gear 124 . The first end wall 118 and the first annular wall 122 together form a first accommodating space 126 for accommodating the adjusting assembly 114 .

In one or more embodiments, the adjustment assembly 114 includes a clutch assembly 128 , at least one locking plate 130 located within the housing 110 and engaged with the clutch assembly 128 , connected to the clutch assembly 128 and driving the locking plate 130 in diameter Cam 132 that moves in the direction.

In one or more embodiments, the end plate 112 is engaged with the housing 110 to enclose the adjustment assembly 114 , wherein the end plate 112 includes a second end wall 134 opposite the first end wall 118 of the housing 110 and a second end wall 134 from the second end wall 110 . A second annular wall 136 extends from the end wall 134 . In one or more embodiments, the second end wall 134 is provided with a second central opening 138 coaxial with the first central opening 120 of the first end wall 118 .

In one or more embodiments, handle assembly 116 includes a pivot shaft 140 passing through housing 110 , adjustment assembly 114 and end plate 112 , and an operating handle 142 coupled to pivot shaft 140 .

Referring to FIG. 5 in conjunction with FIGS. 6-7 , a schematic diagram of the adjustment assembly 114 of FIG. 4 is depicted in FIG. 5 . FIG. 6 depicts an exploded perspective view of the adjustment assembly of FIG. 5 . FIG. 7 depicts another perspective exploded view of the adjustment assembly of FIG. 5 . In one or more embodiments, the clutch assembly 128 includes an annular member 144 and a clutch 146 located within the annular member 144 . In one or more embodiments, the ring 144 includes a body portion 148 and a hollow sleeve 150 connected to and coaxial with the body portion 148 to accommodate the pivot shaft 140 , wherein the sleeve 150 is connected via a plurality of arms 152 to the main body portion 148 . In one or more embodiments, the ring 144 includes a side wall and at least one guide groove on the side wall. In one or more embodiments, the body portion 148 includes a third end wall 154 , a third annular wall 156 extending in the axial direction L from the third end wall 154 . In one or more embodiments, the side wall is the third annular wall 156 of the body portion 148 . The third annular wall 156 includes at least one first guide groove 158 . In one or more embodiments, the at least one guide groove is the at least one first guide groove 158 . In one or more embodiments, the first guide groove 158 includes a first groove portion 160 and a second groove portion 162 extending along the circumferential direction C of the third annular wall 156 and connecting the first groove portion 160 and the second groove portion The third groove portion 164 of the 162, wherein the first groove portion 160 and the second groove portion 162 are parallel and spaced along the axial direction L. The first groove portion 160 is closer to the third end wall 154 than the second groove portion 162 . The distance between the first groove portion 60 and the second groove portion 162 in the axial direction L defines the displacement of the clutch 146 in the axial direction. Further, the third annular wall 156 forms a second accommodation space 166 to accommodate the clutch 146 . In one or more embodiments, the ring member 144 may be a one-piece formed piece.

With continued reference to FIGS. 6 and 7 , in one or more embodiments, the clutch 146 is annular in shape and has a first surface 168 , a second surface 170 opposite the first surface 168 , a side surface 172 , and a third central aperture 174 And at least one second guide groove 176 spaced from the third central opening 174 and extending circumferentially. The second guide slot 176 is defined by a first arcuate inner wall 178 and a second arcuate inner wall 180 , wherein the first arcuate inner wall 178 is closer to the side 172 of the clutch than the second arcuate inner wall 180 . In one or more embodiments, the second guide slot 176 further includes a projection 182 extending radially inward from the first arcuate inner wall 178 , the third surface 184 of the projection 182 and the first surface 168 of the clutch 146 Flush, the fourth surface 186 of the protrusion 182 is spaced apart from the second surface 170 of the clutch 146 . The side surface 188 of the protrusion 182 and the second arc-shaped inner wall 180 and the first arc-shaped inner wall 178 define a fourth groove portion 190 . The fourth groove portion 190 has a small area in a cross section perpendicular to the axial direction L. As shown in FIG. In one or more embodiments, the thickness d1 of the fourth groove portion 190 may be the thickness of the protrusion 182 . The fourth groove portion 190 is closer to the end of the ring member 144 in the axial direction L. As shown in FIG. The first and second arcuate inner walls 178 , 180 of the second guide groove 176 define a fifth groove portion 192 . The fifth groove portion 192 has a large area in a cross section perpendicular to the axial direction L. As shown in FIG. In one or more embodiments, the thickness d2 of the fifth groove portion 192 may be the thickness D of the clutch 146 minus the thickness d1 of the protrusion 182 . The fifth groove portion 190 is further away from the end portion of the ring member 144 in the axial direction L. As shown in FIG. In one or more embodiments, clutch 146 further includes at least one first guide post 194 extending radially from side 172 . When the clutch 146 is accommodated in the second accommodating space 166 of the ring member 144 , the first guide post is accommodated in the first guide groove 158 . In one or more embodiments, the ring member 144 may include three first guide grooves 158 distributed circumferentially along the third annular wall, and the clutch 146 may include three first guide posts distributed circumferentially along the side surface 172 194 and three second guide grooves 176 . The three first guide posts 194 are correspondingly received in the three first guide grooves 158 respectively. In one or more embodiments, at least one first guide post 194 is removably attached to the side 172 of the clutch for ease of installation. The clutch 146 further includes at least one locating slot 196 at the edge of the third central aperture 174 . In one or more embodiments, the third central opening 174 communicates with the positioning slot 196 .

In one or more embodiments, the cam 132 includes a fourth central aperture 198 and at least one locating pin 200 extending around the fourth central aperture 198 and toward the clutch. In one or more embodiments, the clutch 146 includes three positioning slots 196, and the cam 132 includes three positioning pins 200 respectively received in the three positioning slots 196 to limit the relative movement of the clutch 146 and the cam 132 in the circumferential direction . Rotation of the cam 132 enables the locking plate 130 to move radially.

In one or more embodiments, the locking plate 130 includes external teeth 202 at its outer edge that mate with the ring gear 124 of the housing 110 and at least one second guide post 204 extending toward the clutch 146 . The second guide post 204 may be configured to engage with the fourth slot 190 of the second guide slot 176 of the clutch 146 to rotate with the clutch 146 . In the illustrated embodiment, the adjustment assembly 114 includes three locking plates 130 evenly distributed on the circle formed by the ring member 144 . In one or more embodiments, the clutch 146 includes three second guide slots 176 and the lock plate 130 includes three second guide posts 204 that mate with the three guide slots. It should be appreciated that in other embodiments, any suitable number of second guide slots 176 and locking plates 130 may be included.

With further reference to FIGS. 8A and 8B in conjunction with FIG. 5 , FIG. 8A depicts the clutch assembly 128 in a normal position. FIG. 8B depicts the clutch assembly 128 in the deactivated position. The ring member 144 can be rotated from the normal position A shown in FIG. 8A to the deactivated position B shown in FIG. 8B under the action of an external force. Movement of the first guide post 194 within the first guide slot 158 moves the clutch 146 in the axial direction L to disengage the locking plate 130 of the seat angle adjuster 106 to deactivate the seat back angle adjustment function.

Referring to FIGS. 2 and 3 , in one or more embodiments, the angle adjustment device 106 further includes a drive device 205 connected to the sleeve 150 of the ring member 144 . In one or more embodiments, the drive device 205 includes a drive arm 206 connected to the sleeve 150 of the ring 144 and a shutter 208 connected to the drive arm 206 . Referring to FIG. 2 , in one or more embodiments, the baffle 208 may be aligned with the child seat interface 210 of the seat assembly 100 . Thus, when the child seat is installed, the flap 208 is subjected to a force F that causes the ring 144 to rotate from the normal position A shown in Figures 2 and 8A to the deactivated position B shown in Figure 8B. In other embodiments, the drive 205 may also employ a motor or motor 300 to drive the ring 144, and a switch may be provided on the center console of the vehicle to enable the motor or motor.

6, in one or more embodiments, the clutch assembly 128 includes a first reset member 212 disposed between the ring member 144 and the pivot shaft 140, wherein the first reset member 212 is connected to the ring member 144 at one end and the other end Connected to the pivot shaft 140, the biasing force of the first reset element 212 causes the ring 144 to rotate to the normal position B when the external force is removed. In one or more embodiments, the sleeve 150 of the ring member 144 is provided with a first slot 214, and the pivot shaft 140 is provided with a second slot (not shown). One end of the first reset element 212 is connected to the first slot 214 on the sleeve 150 of the ring member 144 , and the other end is connected to the second slot on the pivot shaft 140 for easy installation. Further, the adjustment assembly 114 also includes a second reset element 216 disposed between the end plates 112 of the cam 132 to return the cam 132 to the initial position.

In one or more embodiments, the third central opening 174 of the clutch 146 , the fourth central opening 198 of the cam 132 , and the pivot shaft 140 of the handle assembly 116 are shaped such that the clutch 146 and the cam 132 are circumferentially relative to the pivot shaft 140 It does not rotate so that relative movement in the axial direction can occur. Further, the sleeve 150 of the ring member 144 and the pivot shaft 140 of the handle assembly 116 may be arranged such that the ring member 144 may rotate in the circumferential direction relative to the pivot shaft 140 but not in the axial direction L relative to the pivot shaft 140 relative movement.

In one or more embodiments, when the ring member 144 is in the normal position A, the clutch 146 is accommodated in the second accommodation space 166 of the ring member 144 , and the first guide post 194 of the clutch 146 is located in the first guide groove 158 within the second groove portion 162 of the clutch 146 , and the clutch 146 is axially closer to the locking plate 130 . The second guide post 204 of the lock plate 130 is located in the fourth groove portion 190 of the second guide groove 176 of the clutch 146 so that the lock plate 130 can be linked with the clutch 146 . When the handle 142 of the handle assembly 116 is pulled to adjust the seat angle, driven by the pivot shaft 140, the clutch 146 moves in the second groove portion 162 via the first guide post 194 and rotates in the second receiving space 166, For example in a counterclockwise direction. At the same time, the cam 132 is also rotated under the driving of the pivot shaft 140 . At this time, the second guide post 204 of the lock plate 130 can move within the fourth groove portion 190 of the second guide groove 176 of the clutch 146 so that the lock plate 130 can move radially inward to lock the plate 130 The outer teeth 202 are separated from the inner gear 124 of the housing 110 to adjust the angle of the seat back 104 . That is, when the first guide post 194 of the clutch 146 is located in the second groove portion 162 and the second guide post 204 of the lock plate 130 is located in the fourth groove portion 190 of the second guide groove 176 of the clutch 146, the The angle adjustment function of the seat back. The normal position A of FIG. 8A is the position of the clutch when the angle adjustment function of the seat back can be performed. When the handle 142 of the handle assembly 116 is released, under the action of the second reset element 216 , the clutch 146 , the cam 132 and the handle assembly 116 return to the original position, and at this time, the locking plate 130 is able to diameter under the action of the cam 132 . The outward movement causes the outer teeth 202 on the locking plate 130 to engage with the ring gear 124 of the housing 110 to lock the angle of the seat back 104 .

With further reference to FIG. 8C in conjunction with FIG. 8B , FIG. 8C depicts the positional relationship of the locking plate 130 to the clutch 146 when the clutch assembly 128 is in the deactivated position B. As shown in FIG. In one or more embodiments, when the ring member 144 is rotated from the normal position A to the deactivated position B, the first guide post 194 of the clutch 146 passes from the second groove portion 162 of the first guide groove 158 through the third groove The movement of the portion 164 to the first slot portion 160 causes the clutch 146 to move in the axial direction L along the pivot axis 140 of the handle assembly 116 towards the housing 110 or the third end wall 154 of the ring 144 ie the clutch 146 moves away from the locking plate 130 move in the direction. In one or more embodiments, the first groove portion 160 and the second groove portion 162 are spaced a distance in the axial direction L such that the clutch 146 moves axially toward the third end wall 154 of the ring 144 Or when moving away from the lock plate 130 , the second guide post 204 of the lock plate 130 moves from the fourth groove portion 190 of the second guide groove 176 of the clutch 146 to the fifth groove portion 192 . At this time, the clutch 146 is disengaged from the lock plate 130 . Since the shape and size of the fifth groove 192 is set so as not to engage with the second guide post 204 of the locking plate 130 , the locking plate 130 will not be driven by the clutch 146 . That is, the linkage between the clutch 146 and the lock plate 130 is released. The locking plate 130 does not move in the radial direction, thus keeping the outer teeth 202 of the locking plate 130 in engagement with the inner gear 124 of the housing 110 and deactivating the angle adjustment.

The present application provides an angle adjustment device, when the clutch assembly is in the deactivated position, even if the operation handle is operated, the angle adjustment function of the seat back will not be activated. In this way, undesired tipping of the seat back can be prevented. Further, the present application can automatically deactivate the seat angle adjustment function when the user installs the child seat through the driving device disposed adjacent to the child seat interface.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (20)

1. A clutch assembly for a seat angle adjustment device, comprising: an annular member, wherein the annular member has an annular wall and at least one first guide groove on the annular wall, the first guide groove including a first groove portion and a second groove portion; and a clutch in the ring, wherein the side of the clutch further includes a first guide post accommodated in the first guide groove; Wherein, when the ring member rotates from the normal position to the deactivated position under the action of external force, the first guide post moves from the second groove portion of the first guide groove to the first groove portion so that the The clutch is moved in the axial direction to disengage the locking plate of the seat angle adjustment device to deactivate the seat back angle adjustment function. 2 . The clutch assembly of claim 1 , wherein the first guide groove of the ring member includes a first groove portion extending in the circumferential direction, a second groove portion, and connecting the first groove portion and the second groove portion. 3 . The third groove portion, wherein the first groove portion and the second groove portion are parallel and spaced apart in the axial direction, and the first groove portion is closer to the annular shape than the second groove portion. the end of the wall; wherein the clutch has a first surface, a second surface, a central aperture, and at least one second guide groove spaced from the central aperture and extending circumferentially, wherein the second guide The groove is defined by a first arc-shaped inner wall and a second arc-shaped inner wall, the first arc-shaped inner wall being closer to the side of the clutch relative to the second arc-shaped inner wall, wherein the second guide groove further includes a guide groove from the first arc-shaped inner wall. an arcuate inner wall extending radially inwardly with a third surface of the protrusion flush with the first surface of the clutch and a fourth surface of the protrusion spaced from the second surface of the clutch , wherein the convex side and the second arc-shaped inner wall and the first arc-shaped inner wall define a fourth groove portion, the first and second arc-shaped inner walls of the second guide groove define a fifth groove portion, and the The fourth groove portion is closer to the end of the annular wall than the fifth groove portion. 3. The clutch assembly of claim 2, said ring member including a centrally located sleeve to accommodate a pivot shaft, further comprising a first reset element disposed between said ring member and said pivot shaft, One end of the first reset element is connected to the ring member, and the other end is connected to the pivot shaft, and when the external force is removed, the biasing force of the first reset member causes the ring member from the deactivation. position is rotated to the normal position. 4. The clutch assembly of claim 1, said ring member including three said first guide grooves, wherein said clutch further includes three corresponding first guide posts and three said second guides slot, the clutch further includes a central opening and a plurality of locating grooves on the edge of the central opening. 5. A seat angle adjustment device, comprising: a housing having an inner gear ring; an end plate opposite the housing; and An adjustment assembly located between the housing and the end plate, comprising: a clutch assembly, wherein the clutch assembly includes a ring member that rotates between a normal position and a deactivated position, wherein the ring member has a side wall and at least one first guide groove on the side wall; within the ring member and a clutch moving in the axial direction, wherein the clutch is provided with a first guide post that cooperates with the first guide groove; at least one lock plate located within the housing and engaged with the clutch, the outer edge of the lock plate having external teeth that mate with the ring gear; and a cam connected to the clutch and driving the locking plate to move in a radial direction; Wherein, under the action of external force, when the ring member rotates from the normal position to the deactivation position, the clutch moves in the axial direction to a position where it is released from the locking plate to keep the The outer teeth of the locking plate engage with the inner ring gear of the housing to deactivate the seat back angle adjustment function. 6. The seat angle adjustment device of claim 5, wherein the annular member includes a body portion and a sleeve connected to the body portion and coaxial with the annular portion, wherein the sleeve is connected via a plurality of An arm is connected to the body portion. 7 . The seat angle adjusting device according to claim 6 , wherein the annular member is an integrally formed part, the side wall is an annular wall on the main body portion, and the annular wall forms a receiving space to accommodate the For a clutch, the body portion includes an end wall. 8 . The seat angle adjusting device of claim 7 , wherein the first guide groove includes a first groove portion, a second groove portion extending in a circumferential direction, and a connection connecting the first groove portion and the second groove portion. 9 . A third groove portion, wherein the first groove portion and the second groove portion are parallel and spaced apart in the axial direction, and the first groove portion is farther away from the locking than the second groove portion the plate, wherein the distance between the first groove portion and the second groove portion in the axial direction defines the displacement of the clutch in the axial direction. 9. The seat angle adjustment device of claim 8, wherein the clutch is annular, the clutch including a first surface, a second surface opposite the first surface and facing the locking plate, and connecting the The sides of the first surface and the second surface, wherein the first guide post is located on the side of the clutch and extends radially outward. 10. The seat angle adjustment device of claim 9, wherein the clutch has a central opening and at least one second guide groove spaced from the central opening and extending circumferentially, the second guide The guide groove is defined by a first arc-shaped inner wall and a second arc-shaped inner wall, the first arc-shaped inner wall is closer to the side of the clutch relative to the second arc-shaped inner wall, wherein the second guide groove further comprises an inwardly extending protrusion of the first arcuate wall, a third surface of the protrusion is flush with the first surface of the clutch, and a fourth surface of the protrusion is spaced from the second surface of the plate , wherein the side of the bulge and the second arc-shaped inner wall and the first arc-shaped inner wall define a fourth groove portion, the first and second arc-shaped inner walls of the second guide groove and the fourth arc-shaped inner wall of the bulge The surface defines a fifth groove portion, wherein the fourth groove portion is closer to the end wall of the ring than the fifth groove portion. 11. The seat angle adjustment device of claim 10, wherein the locking plate has a second guide post extending toward the clutch, the clutch rotating when the ring is in the normal position When the second guide post can move in the fourth groove portion of the second guide groove, the locking plate can move radially inward so that the outer teeth on the locking plate are connected to the housing. The ring gear is disengaged to perform the angle adjustment of the seat back, wherein when the ring member is rotated to the deactivated position, the first guide post of the clutch is removed from the first guide post of the first guide groove. The movement of the second groove portion to the first groove portion via the third groove portion causes the clutch to move toward the end wall of the ring, so that the second guide post of the locking plate is removed from the clutch's second guide post. The fourth slot portion moves to the fifth slot portion and cannot move with the clutch to keep the outer teeth of the locking plate in engagement with the inner ring gear of the housing for deactivation Angle adjustment. 12 . The seat angle adjusting device according to claim 11 , the clutch is provided with at least one positioning groove located at the edge of the central hole and communicated with the central opening, and the cam is provided with facing the clutch Corresponding locating pins extend to engage with the locating grooves of the clutch to limit relative movement in the circumferential direction between the clutch and the cam. 13. The seat angle adjustment device according to claim 12, further comprising a handle assembly comprising an operating handle and a pivot shaft connected with the handle, the pivot shaft passing through the end plate, the adjustment assembly and the housing. 14. The seat angle adjusting device according to claim 13, further comprising a first restoring member disposed between the ring member and the pivot shaft, the first restoring member being connected to the ring member at one end, The other end is connected to the pivot shaft. 15. The clutch assembly of claim 5, said ring member comprising three said first guide grooves, wherein said clutch further comprising three corresponding first guide posts and three said second guides slot, the clutch further includes a central opening and a plurality of locating grooves on the edge of the central opening. 16. The seat angle adjustment device of claim 5, further comprising a drive device connected to the ring member, the drive device comprising a drive arm connected to the ring member and a stopper connected to the drive arm plate, and the external force exerted on the baffle rotates the ring. 17. The seat angle adjustment device of claim 5, further comprising a drive connected to the ring, the drive being a motor, the motor rotating the ring in the normal position and the ring Deactivated position turns. 18. A seat assembly comprising: backrest; seat cushion; An angle adjusting device connected between the backrest and the seat cushion, the angle adjusting device comprising: a housing having an inner gear ring; an end plate opposite the housing; an adjustment assembly located between the housing and the end plate; Wherein, the adjustment component includes: A clutch pack, wherein the clutch pack contains: an annular member that rotates between a normal position and a rest position, wherein the annular wall of the annular member is provided with a first guide groove; a clutch located in the ring and movable in the axial direction, the side of the clutch is provided with at least one first guide post accommodated in the first guide groove; a lock plate located within the end plate and engaged with the clutch, the outer edge of the lock plate having external teeth that mate with the ring gear; and a cam connected to the clutch and driving the locking plate to move in a radial direction; wherein rotation of the ring between the normal position and the deactivated position moves the clutch in the axial direction, wherein when the ring is in the deactivated position, the lock The outer teeth of the stop plate remain in mesh with the inner ring gear to disable angular adjustment of the seat back. 19. The seat assembly of claim 18, wherein the first guide slot includes a circumferentially extending first slot portion, a second slot portion, and a third slot portion connecting the first slot portion and the second slot portion a groove portion, wherein the first groove portion is parallel to the second groove portion and spaced apart in the axial direction, wherein in the normal position, the first guide post of the clutch is located in the first In the second groove portion of a guide groove, and when the ring member is rotated from the normal position to the inactive position, the first guide post moves to the third groove portion through the third groove portion. in the first groove. 20. The seat assembly of claim 19, further comprising a handle assembly including an operating handle and a pivot shaft connected to operating the operating handle and passing through the adjustment assembly; connected to the annular A drive arm of the component and a flap connected to the drive arm, the flap being aligned with the seat's safety seat interface, the insertion of the safety seat latch drives the clutch to rotate to the deactivated position.