WO2023282509A1

WO2023282509A1 - Release actuator for vehicle seat

Info

Publication number: WO2023282509A1
Application number: PCT/KR2022/009007
Authority: WO
Inventors: 최수길; 공정현
Original assignee: 주식회사 인팩
Priority date: 2021-07-08
Filing date: 2022-06-24
Publication date: 2023-01-12
Also published as: KR20230009090A; KR102495133B1

Abstract

The present invention relates to a release actuator for a vehicle seat, the release actuator comprising: a first cable and a second cable having one end portion connected to a walk-in latch and a folding latch, respectively, and the other end portion having cylindrically-shaped first head part and second head part, respectively; a release lever connected to a driving part by means of a speed reducer, and rotating in a first direction or a second direction in accordance with rotation of the driving part to pull the first table or the second table; and a return spring provided on the release lever to return the first cable or the second cable to the initial position when power from the driving part is cut off, wherein the release lever has a pair of guide parts in which the first head part and the second head part are inserted and restrained. Therefore, the internal structure of the seat is simplified, and assembly is enhanced.

Description

Release actuator of vehicle seat

The present invention relates to a release actuator for a vehicle seat, and more particularly, to a release actuator for a vehicle seat that is provided as a single actuator and can implement the functions of a conventional walk-in release actuator and a folding release actuator.

In general, a car seat includes a seatback (backrest) supporting a passenger's back and a cushion part supporting a seat.

Recently, in the case of a sport utility vehicle (SUV) or a 2-door or 3-door vehicle, a seat (eg, a second row seat) is slid forward to widen a riding space in order to facilitate boarding of a rear seat occupant. In this way, sliding the sheet in the front-rear direction is called a walk-in function.

In addition, by folding the seatback of the seat along with the sliding function of the seat, the expansion of the riding space and loading space is expanded. In this way, tilting the seat back in the forward and backward directions is referred to as a folding function.

In order to implement the walk-in function and folding function, the seat is slidably mounted in the forward and backward directions along the seat rail, and the seatback is configured to rotate (tilt) forward or backward.

On the other hand, when the adjustment of the sliding position and rotation of the seat is completed, the sliding position of the seat is fixed by the walk-in latch, and the rotation angle of the seatback is configured to be fixed by the folding latch.

At this time, the locking state by the walk-in latch and the folding latch can be released by pulling the cable connected to the walk-in latch and the folding latch.

However, conventionally, as the locking state of the walk-in latch and the locking state of the folding latch are configured to be released by separate release actuators, the structure is complicated and design freedom and space utilization are reduced.

That is, the unlocking of the walk-in latch is released by pulling the walk-in cable connected to the walk-in latch to the first release actuator, and the unlocking of the folding latch is released by pulling the folding cable connected to the folding latch to the second release actuator. As it is configured to be released, since two release actuators must be mounted to implement the walk-in function and folding function of the sheet, there is a problem in that design freedom and space utilization are lowered and cost is increased.

Accordingly, in recent years, various studies have been made to simplify the walk-in and folding operation structure of the sheet, and to improve design freedom and space utilization, but it is still insufficient and development thereof is required.

The present invention has been devised from the foregoing background, and as a single actuator implements the functions of the conventional walk-in release actuator and folding release actuator, it is possible to simplify the structure of the walk-in and folding operation of the sheet, design freedom and The purpose is to provide a release actuator for vehicle seats to improve space utilization.

In addition, the object is to provide a release actuator for a vehicle seat for simplifying the number of parts by eliminating parts for guiding a separate cable and also removing parts for preventing separation of cables, and improving assembly and productivity.

In addition, an object of the present invention is to provide a release actuator for a vehicle seat to operate stably by minimizing friction with a cable during operation and to improve operability and power transmission efficiency.

The object of the present invention is not limited thereto, and other objects not mentioned will be clearly understood by those skilled in the art from the description below.

According to the present invention, the release actuator for a vehicle seat has one end connected to a walk-in latch and a folding latch, and a first cable, a second cable, and a disc having a first head part and a second head part having a cylindrical shape at the other end, respectively. A release lever that is provided in a shape and has a terminal gear formed on a part of the outer circumferential surface, connected to the driving unit and the reduction device via a medium, and which pulls the first cable or the second cable while rotating in the first or second direction according to the rotation of the driving unit. It includes a return spring installed on the lever to return the first cable or the second cable to an initial position when the power of the drive unit is cut off, and the release lever includes a pair of guide parts that are restrained after the first head part and the second head part are inserted. can do.

The pair of guide parts may include a first guide part and a second guide part formed by protruding in an arc-shaped block shape from opposite side surfaces of the release lever where the end gear is formed, respectively, and disposed to face each other.

The first guide portion is formed by being depressed at the protruding end surface, but is formed by penetrating the first guide groove elongated in the circumferential direction, axially from the bottom surface of one end of the first guide groove to the protruding end surface of the second guide portion, , the first insertion hole into which the first head unit is inserted in the axial direction, and the first insertion slit into which the first cable is inserted by forming a part between the outer circumferential surface and the first insertion hole of the protruding end surface of the second guide unit by being depressed with a certain length. can be provided.

In addition, the second guide part is formed by being depressed at the protruding end surface, but is formed long in the circumferential direction, and a second guide groove in which a part in the circumferential direction is disposed to face each other with the first guide groove, and a bottom surface of one end of the second guide groove A second insertion hole formed by penetrating in the axial direction from the first guide portion to the protruding end surface of the first guide portion and into which the second head portion is axially inserted, and a portion between the outer circumferential surface and the second insertion hole among the protruding end surfaces of the first guide portion. A second insertion slit formed by recessing the predetermined length and into which a second cable is inserted may be provided.

In addition, the first guide part and the second guide part have a first passage slit formed by being depressed from the bottom surface of the first insertion slit and the second insertion slit to the other end along the circumference of the first guide groove and the second guide groove, respectively. 2 through slits may be further provided.

In addition, in the first insertion hole and the second insertion hole, portions of one end portions of the first guide part and the second guide part are cut so that the first cable and the second cable inserted into the first through slit and the second through slit are spaced apart. A first anti-jamming opening and a second anti-jamming opening may be provided.

Accordingly, when the release lever rotates in the first direction, the first head part is supported on the other end of the first guide groove and the first cable is pulled, the second head part moves along the second guide groove, and the release lever When rotated in the second direction, the second head is supported by the other end of the second guide groove, the second cable is pulled, and the first head may move along the first guide groove.

In addition, the reduction device may include a worm gear formed on the drive shaft of the drive unit, a worm wheel engaged with the worm gear, and a transmission gear installed coaxially with the worm wheel to rotate together and formed with a smaller diameter than the worm wheel to engage with the terminal gear.

According to the present invention, as a single actuator is provided and the functions of the conventional walk-in release actuator and folding release actuator are implemented, the walk-in and folding operation structure of the sheet can be simplified, and the design freedom and space utilization are improved. has the effect of

In addition, there is no need for a part for guiding a separate cable in the release lever, and a part for preventing the separation of the cable is unnecessary, and as the assembly is easy, assembly and productivity are improved, and the number of parts is simplified, thereby reducing cost.

In addition, during operation, friction with the cable is minimized to operate stably, and there is an effect of improving operability and power transmission efficiency.

1 is a front view of a release actuator for a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view A-A of FIG. 1 .

3 is an exploded perspective view of a release actuator for a vehicle seat according to an embodiment of the present invention.

4 is an exploded perspective view of some components of a release actuator for a vehicle seat according to an embodiment of the present invention.

5 is a B-B cross-sectional view of FIG. 2;

6 and 7 are perspective views of a release lever of a release actuator of a vehicle seat according to an embodiment of the present invention.

8 is a view showing an assembly structure in which a pair of cables are assembled to a release lever of a release actuator of a vehicle seat according to an embodiment of the present invention.

9 is a view showing an operating structure of a release lever and a pair of cables when a drive unit rotates in a first direction in a release actuator of a vehicle seat according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

1 is a front view of a release actuator for a vehicle seat according to an embodiment of the present invention, FIG. 2 is an A-A cross-sectional view of FIG. 1, and FIG. 3 is an exploded perspective view of a release actuator for a vehicle seat according to an embodiment of the present invention. 4 is an exploded perspective view of a part of a release actuator for a vehicle seat according to an embodiment of the present invention, FIG. 5 is a B-B cross-sectional view of FIG. 2, and FIGS. 6 and 7 are a release actuator for a vehicle seat according to an embodiment of the present invention. A perspective view of a release lever, Figure 8 is a view showing an assembly structure in which a pair of cables are assembled to the release lever of the release actuator of the vehicle seat according to an embodiment of the present invention, Figure 9 is for a vehicle according to an embodiment of the present invention It is a view showing the operating structure of the release lever and a pair of cables when the driving unit rotates in the first direction in the release actuator of the seat.

As shown in these drawings, the release actuator 1 of the vehicle seat according to the embodiment of the present invention has one end connected to the walk-in latch and the folding latch, and the other end has a cylindrical first head part 11 And the first cable 10 and the second cable 20 provided with a second head portion 21, are provided in a disk shape, and a terminal gear 230 is formed on a portion of the outer circumferential surface to drive the drive unit 301 and the reduction device ( 300) is connected to the release lever 200 and the release lever 200 pulls the first cable 10 or the second cable 20 while being rotated in the first direction or the second direction according to the rotation of the drive unit 301. ) and includes a return spring that returns the first cable 10 or the second cable 20 to an initial position when the driving unit 301 is powered off, and the release lever 200 is the first head unit 11 and a pair of

guide parts

210 and 220 that are restrained after the second head part 21 is inserted.

For reference, in the present invention, a seat means a seat prepared for a passenger to sit inside a vehicle, and the present invention is not limited or limited by the structure and arrangement of the seat. For example, the seat may include a seatback (backrest) supporting a passenger's back and a cushion part supporting a seat.

In addition, in the present invention, the walk-in latch is understood as a walk-in motion restraining member for selectively restraining the walk-in motion of a sheet that slides and moves the sheet in the forward and backward directions.

A first cable 10 is connected to the walk-in latch, and the walk-in latch can be placed in a walk-in unlocking position (a position where the walk-in operation of the sheet is allowed) by pulling operation of the first cable 10, , When the pulling operation of the first cable 10 is released, the walk-in latch may be disposed again at the walk-in locking position (a position where the walk-in operation of the sheet is constrained).

In addition, in the present invention, the folding latch is understood as a folding action restraining member for selectively restricting the folding action of the seat that rotates (tilts) the seat back of the seat forward or backward.

In addition, a second cable 20 is connected to the folding latch, and by pulling the second cable 20, the folding latch can be placed in a folding unlocking position (a position where the folding operation of the sheet is permitted). When the pulling operation of the two cables 20 is released, the folding latch may be placed in a folding locking position (a position where the folding operation of the seat is restricted).

In the present invention, the first cable 10 and the second cable 20 are constrained, and the first cable 10 and the second cable 20 can be selectively pulled according to the rotation direction, and one drive unit 301 A release lever 200 that operates as is provided.

One ends of the first cable 10 and the second cable 20 are connected to the walk-in latch and the folding latch, respectively, and the other ends are connected to the cylindrical first head part 11 and the second head part 21, respectively. ) and is constrained to the release lever 200.

The pair of

cables

10 and 20 are provided with a cable protection cover 30 surrounding the outside except for a portion of the pair of

heads

11 and 21 and the other end, and are fixed in position between the

housings

110 and 120 to be described later. .

At this time, the pair of

cables

10 and 20 can be pulled or moved to the initial position according to the operation of the release lever 200 inside the cable protective cover 30, and the cable protective cover 30 is provided to position It is fixed and prevents twisting of the

cables

10 and 20 and prevents the pair of

cables

10 and 20 from being exposed to the outside.

This cable protection cover 30 can be inserted into the cover insertion groove 123 formed in the second housing 120, and a part of the outer circumferential surface protrudes and has a hooking portion 31 formed along the circumference so that the second housing It is inserted into the engaging part insertion groove 124 formed in 120 and is fixed in position between the pair of

housings

110 and 120.

The release lever 200 is formed in a disk shape and rotates about a central axis, and the first cable 10 ) or the second cable 20 can be pulled.

When the release lever 200 rotates in the first direction, the first cable 10 is pulled and the walk-in latch is disposed at the walk-in unlocking position, and when the release lever 200 rotates in the second direction, the second cable ( 20) to place the folding latch in the folding unlock position.

In addition, the release lever 200 is connected to the driving unit 301 and the deceleration device 300 as a medium, and the driving force decelerated according to the driving unit 301 is transmitted and rotates in a first direction or a second direction, and the driving unit 301 ) is returned to the initial position by the return spring when the power is cut off.

First, the driving unit 301 and the deceleration device 300 for rotating the release lever 200 will be described later.

The driving unit 301 is provided to output a driving force for rotation of the release lever 200 in a first direction or a second direction, and a motor capable of normal forward and reverse rotation capable of providing rotational driving force to the driving unit 301 It can be used, and the present invention is not limited or limited by the type of motor.

The driver 301 operates according to a signal input from the connected circuit board 303, rotates the release lever 200 in a first direction or a second direction, and returns the release lever 200 to its initial position. When power is cut off.

The reduction device 300 may include a worm gear 310, a worm wheel 320, a transmission gear 330, and a terminal gear 230 formed on the release lever 200.

The worm gear 310 is formed on a part of the driving shaft of the driving unit 301 and rotates together with the driving shaft 302 when power is applied to the driving unit 301 .

The worm wheel 320 is rotated with the worm wheel 320 support pin 111 as a central axis by inserting a worm wheel 320 support pin 111 supporting between the

housings

110 and 120 to be described later in the center, and the worm wheel ( 320) and the rotation axis of the worm gear 310 are arranged to be orthogonal, the worm gear 310 is meshed with one side of the outer circumferential surface of the worm wheel 320, and the driving force of the drive unit 301 is driven at a large reduction ratio through engagement with the worm gear 310 It is passed on.

The transmission gear 330 is integrally formed with the worm wheel 320 or attached to the worm wheel 320, provided coaxially with the worm wheel 320 and rotates together, and is formed with a diameter smaller than that of the worm wheel 320 to be described later It meshes with the gear 230.

The terminal gear 230 is formed on a portion of the outer circumferential surface of the release lever 200, engages with the transmission gear 330 to transmit the driving force of the driving unit 301, and rotates in a first direction according to the rotational direction of the driving unit 301 or rotated in the second direction.

However, although the reduction device 300 has been described as consisting of a worm gear 310, a worm wheel 320, and a transmission gear 330, it is not limited thereto, and other gears or gears instead of the worm gear 310 and the worm wheel 320 It can be configured using a combination.

The release lever 200, the drive unit 301, the circuit board 303, and the deceleration device 300 may be respectively installed in installation spaces formed inside the pair of

housings

110 and 120, and the pair of

housings

110 and 120, respectively. 120) is formed to form the outer shape of the dual actuator 1 of the vehicle seat, and includes a first housing 110 and a second housing 120.

However, the structure of the first housing 110 and the second housing 120 may be variously changed according to required conditions and design specifications, and the present invention is not limited or limited by the structure of the

housings

110 and 120. not.

The first housing 110 is formed to cover one side of the release lever 200, the drive unit 301, the circuit board 303, and the reduction device 300, and supports the rotation of the worm wheel 320. Worm wheel 320 ) A support pin 111 and a lever support pin 112 supporting rotation of the release lever 200 are installed.

The worm wheel 320 support pin 111 and lever support pin 112 are installed between the first housing 110 and the second housing 120 to support rotation of the worm wheel 320 and the release lever 200, respectively. do.

The second housing 120 is formed to cover the other side of the release lever 200, the drive unit 301, the circuit board 303, and the deceleration device 300, and fastening bolts fastened to the first housing 110 ( 101) is coupled to the first housing 110 to form an internal space between the first housing 110 and the first housing 110.

The second housing 120 has a cable protective cover 30 at its rim to support the cable protective cover 30 of the pair of

cables

10 and 20 drawn out from the release lever 200 installed in the inner space. The cover insertion groove 123 to be inserted is formed by being recessed.

In addition, a hooking part insertion groove 124 is formed extending from the cover insertion groove 123 and into which the hooking part 31 of the cable protective cover 30 is inserted, and the hooking part inserting groove 124 is the cover inserting groove ( 123) is formed by being recessed on both sides, and a locking portion 31 is inserted to limit the movement of the cable protective cover 30.

The second housing 120 has a support boss 121 protruding inward from the center of the space in which the release lever 200 is mounted, and the support boss 121 is provided with a support boss 121 on one side of the release lever 200. 2 The boss portion 250 protruding toward the housing 120 is inserted.

In addition, a return spring 400 is positioned between the release lever 200 and the second housing 120 . The return spring 400 is provided by being wound around the support boss 121 of the second housing 120 and is bent at both ends, respectively, so that the release lever 200 and the second housing 120 support the first bent ends 410. ) and a second bending end 420 are provided.

The release lever 200 has a pressing protrusion 240 protruding and formed in an arc-shaped block shape on one side facing the second housing 120, and first bent ends at both ends of the pressing protrusion 240 in the circumferential direction. 410 and the second bent end 420 are supported.

The protruding end of the pressing protrusion 240 supports the inner surface of the second housing 120 and may be formed such that the protruding area becomes smaller toward the end in order to reduce friction with the second housing 120 .

The second housing 120 protrudes in an arc-shaped block shape on the inner surface facing the release lever 200, and has a support 122 formed so that the outer circumferential surface faces the inner circumferential surface of the pressing protrusion 240, , The first bent end 410 and the second bent end 420 are supported at both ends of the support part 122 in the circumferential direction.

Referring to FIG. 5 , the return spring 400 is wound around the support boss 121 of the second housing 120 and is fixedly positioned, and the first bent end 410 and the second bent end 420 are connected to the support part 122. It is supported and positioned at both ends of the pressing protrusion 240 in the circumferential direction.

In this state, when the drive unit 301 operates and the release lever 200 rotates in the first direction, the pressing protrusion 240 rotates the first bent end 410 clockwise while rotating clockwise in the drawing. As the second bent end 420 is supported by the support 122 of the second housing 120, the return spring 400 is compressed. Then, when power is cut off to the drive unit 301, the return spring 400 is restored and the pressing protrusion 240 is restored to its initial position.

Similarly, when the drive unit 301 operates and the release lever 200 rotates in the second direction, the pressing protrusion 240 rotates counterclockwise on the drawing and rotates the second bent end 420 counterclockwise, As the first bent end 410 is supported by the support 122 of the second housing 120, the return spring 400 is compressed. Then, when power is cut off to the drive unit 301, the return spring 400 is restored and the pressing protrusion 240 is restored to its initial position.

Hereinafter, a pair of

guide parts

210 and 220 to which the first cable 10 and the second cable 20 of the release lever 200 are restrained will be described with reference to FIGS. 6 and 7 .

A pair of

guide parts

210 and 220 are formed to protrude from both sides of the release lever 200 .

The pair of

guide parts

210 and 220 do not move the

head parts

11 and 21 in a state where the

head parts

11 and 21 and the

cables

10 and 20 are inserted, and are provided to be movable in the circumferential direction.

Grooves

212 and 222 and through

slits

214 and 224 are formed. That is, the pair of

guide parts

210 and 220 have arc-shaped

guide grooves

212 and 222 in which the

head parts

11 and 21 are movable and an opening from the

guide grooves

212 and 222 to the outside of the release lever 200. Passing

slits

214 and 224 are formed so that the

cables

10 and 20 can move when the

heads

11 and 21 move along the

guide grooves

212 and 222.

In addition, the pair of

guide parts

210 and 220 are assembled such that the

head parts

11 and 21 and the

cables

10 and 20 are inserted into the

guide grooves

212 and 222 and the through

slits

214 and 224, respectively. , Insertion holes 211 and 221 connected to the

guide grooves

212 and 222 are formed, and

insertion slits

213 and 223 connected to the passing

slits

214 and 224 are formed.

At this time, the

head parts

11 and 21 and the

cables

10 and 20 cannot be separated after being inserted into the

guide grooves

212 and 222 and the through

slits

214 and 224 and are bound to the

guide parts

210 and 220. .

The pair of

guide parts

210 and 220 protrude in an arc-shaped block shape from both sides of the release lever 200 on the opposite side where the end gear 230 is formed, and the first guide parts 210 disposed to face each other ) and the second guide part 220.

That is, the

guide parts

210 and 220 are arc-shaped block-shaped parts provided in the release lever 200, and the first guide part 210 and the release lever 200 are arranged to protrude to one side of the release lever 200. It consists of a second guide portion 220 disposed to protrude to the other side of.

The first guide part 210 includes a first guide groove 212 , a first insertion hole 211 , a first insertion slit 213 , and a first through slit 214 .

The first guide groove 212 is formed by being depressed at the protruding end surface and is formed long in the circumferential direction, and is located at the other end in the circumferential direction after the first head part 11 is inserted through the first insertion hole 211. do.

However, the first head part 11 does not move inside the first guide groove 212, but the release lever 200 rotates to change the position of the first guide groove 212, and the first head part 11 ) is positioned from one end to the other end of the first guide groove 212, and for convenience of description, the first head portion 11 will be described as moving along the first guide groove 212.

The first insertion hole 211 is formed to penetrate in the axial direction from the bottom surface of one end of the first guide groove 212 to the protruding end surface of the second guide part 220, and the first head part 11 1 is inserted in the axial direction from the protruding opposite end surface of the guide part 210.

The first insertion slit 213 is formed by recessing a portion of the protruding end surface of the second guide part 220 between the outer circumferential surface and the first insertion hole 211 by a predetermined length, When the first head part 11 is inserted in the axial direction, the first cable 10 is inserted into the first insertion slit 213 in the axial direction.

The first insertion slit 213 is provided in the form of a slit enough to allow the first cable 10 to be inserted, and the first head portion 11 inserted into the first insertion hole 211 is provided with the first insertion slit 213. ) is provided so that it cannot be separated. That is, it is preferable that the distance between the first insertion slits 213 is formed so that the first cable 10 can pass through, and is at least smaller than the diameter of the first head part 11 .

The first passage slit 214 is formed by being recessed from the bottom surface of the first insertion slit 213 to the other end along the circumference of the first guide groove 212, so that the first head portion 11 is formed in the first guide groove ( 212, the first cable 10 moves along the first passage slit 214.

In particular, the first through slit 214 is formed to be open to the outside of the release lever 200, and is formed to be opened to the outside from the other end of the first guide groove 212.

When the release lever 200 rotates and the first head part 11 is moved to the other end of the first guide groove 212, the first through slit 214 is inserted into the first cable 10 to release the release lever. A collision with the first guide part 210 of (200) is prevented.

If the first passage slit 214 is not formed, the release lever 200 rotates to pull the second cable 20 so that the first head part 11 moves to the other end of the first guide groove 212. When moving, the first cable 10 is bent while being pressed into the first insertion slit 213, and a force resisting the operation of the release lever 200 may be generated. In severe cases, the first cable 10 is pulled. A walk-in function may be provided unintentionally.

Therefore, the present invention provides a space in which the first cable 10 can move when the release lever 200 rotates by having the first through slit 214, and thus the release lever 200 can operate stably. there is.

The second guide part 220 includes a second guide groove 222 , a second insertion hole 221 , a second insertion slit 223 , and a second through slit 224 .

The second guide groove 222 is formed by being depressed at the protruding end surface, but is formed long in the circumferential direction, and a part in the circumferential direction is disposed to face each other with the first guide groove 212, and the second insertion hole 221 is formed. After the second head portion 21 is inserted through, it is located at the other end in the circumferential direction.

That is, the first guide groove 212 and the second guide groove 222 are disposed to face only a portion of each other, and one end of each is disposed so as not to face each other. For example, one end of the first guide groove 212 protrudes from the other end of the second guide groove 222 in a clockwise direction, and one end of the second guide groove 222 has a first guide groove 212 It may be positioned protruding in a counterclockwise direction from the other end of the.

However, the second head part 21 does not move inside the second guide groove 222, but the release lever 200 rotates and the position of the second guide groove 222 is changed so that the second head part 21 ) is located from one end to the other end of the second guide groove 222, and for convenience of description, it will be described that the second head portion 21 moves along the second guide groove 222.

The second insertion hole 221 is formed to penetrate in the axial direction from the bottom surface of one end of the second guide groove 222 to the protruding end surface of the first guide part 210, and the second head part 21 is 2 is inserted in the axial direction from the protruding opposite end surface of the guide part 220.

The second insertion slit 223 is formed by recessing a portion of the protruding end surface of the first guide part 210 between the outer circumferential surface and the second insertion hole 221 by a predetermined length, 2 When the head part 21 is inserted in the axial direction, the second cable 20 is inserted into the second insertion slit 223 in the axial direction.

The second insertion slit 223 is provided in the form of a slit enough to allow the second cable 20 to be inserted, and the second head portion 21 inserted into the second insertion hole 221 is ) is provided so that it cannot be separated. That is, it is preferable that the interval between the second insertion slits 223 is formed so that the second cable 20 can pass therethrough, and is at least smaller than the diameter of the second head part 21 .

The second passage slit 224 is formed by being recessed from the bottom surface of the second insertion slit 223 to the other end along the circumference of the second guide groove 222, so that the second head portion 21 is formed in the second guide groove ( 222, the second cable 20 moves along the second passage slit 224.

In particular, the second passage slit 224 is formed to open to the outside of the release lever 200, and is formed to open to the outside from the other end of the second guide groove 222.

When the release lever 200 rotates and the second head part 21 is moved to the other end of the second guide groove 222, the second through slit 224 is inserted into the release lever 200 to release the second cable 20. A collision with the second guide part 220 of (200) is prevented.

If the second passage slit 224 is not formed, the release lever 200 rotates to pull the first cable 10 so that the second head part 21 moves to the other end of the second guide groove 222. When moving, the second cable 20 is bent while being pressed into the second insertion slit 223, and a force resisting the operation of the release lever 200 may be generated. In severe cases, the second cable 20 is pulled A folding function may be provided unintentionally.

Therefore, the present invention provides a space in which the second cable 20 can move when the release lever 200 rotates by having the second passage slit 224, and thus the release lever 200 can stably operate. there is.

In addition, the first insertion hole 211 and the second insertion hole 221 allow the first cable 10 and the second cable 20 inserted into the first through slit 214 and the second through slit 224 to pass through. A first anti-jamming opening formed by cutting portions of one end portions of the first guide portion 210 and the second guide portion 220 so as not to rub against the pair of

guide portions

210 and 220 when the release lever 200 is operated. (215) and a second anti-locking opening (225).

That is, when the release lever 200 rotates in the first direction, the first cable 10 is pulled in a state where the first head part 11 is located at the other end of the first guide groove 212. A second anti-locking opening 225 is provided to prevent the first cable 10 pulled out through friction with the side of the release lever 200 and interfering with the operation of the release lever 200 .

As described above, the first anti-jamming opening 215 is formed by cutting a portion of the first insertion hole 211 of the first guide portion 210 and is inserted into the second guide groove 222 and then the first insertion hole 211 is formed. 2 Prevents the second cable 20 drawn out through the passage slit 224 from being supported by the second guide part 220, and the end surface cut by the first anti-clamping opening 215 is the second cable 20 It is spaced apart from (20).

In other words, the first anti-locking opening 215 is formed by protruding from the other end of the second guide part 220 in a flange shape, and is a path through which the first head part 11 is inserted into the first insertion hole 211. It is disposed on the top to guide the insertion of the first head portion 11 and is provided to be spaced apart from the second cable 20 that is drawn out through the second passage slit 224.

Similarly, the second anti-jamming opening 225 is also formed by cutting a portion of the second insertion hole 221 of the second guide portion 220, and is inserted into the first guide groove 212, then the first insertion hole 221 is formed. The first cable 10 drawn out through the passage slit 214 is prevented from being supported by the first guide part 210, and the end surface cut into the second anti-clamping opening 225 is the first cable ( 10) and spaced apart. (This structure can be confirmed through the separation of the first cable 10 from the portion indicated by reference numeral 225 in FIG. 5.)

In other words, the second anti-locking opening 225 is formed by protruding from the other end of the first guide part 210 in a flange shape, and is a path through which the first head part 11 is inserted into the first insertion hole 211. It is disposed on the top to guide the insertion of the first head unit 11 and is provided to be spaced apart from the first cable 10 drawn out through the first passage slit 214 .

8 shows an assembly structure for assembling the first cable 10 and the second cable 20 to the release lever 200 .

According to FIG. 8, the first cable 10 is inserted from the left side of the drawing of the second guide part 220, moves in the axial direction, moves onto the first guide part 210, and then moves to the right side (in the circumferential direction) of the drawing. , and is located on the right side of the drawing of the first guide part 210 of the release lever 200.

That is, the first head part 11 is inserted into the first insertion hole 211 and the first cable 10 is inserted into the first insertion slit 213 and moves in the axial direction so that the first head part 11 When located at one end of the first guide groove 212, the first cable 10 is located on the bottom surface of the first insertion slit 213, that is, at one end of the first passage slit 214. In this state, the first head part 11 moves to the other end of the first guide groove 212 and the first cable 10 moves to the other end of the first passage slit 214 .

In the assembled first cable 10, the first head portion 11 of the other end is constrained to the first guide groove 212 and one end is connected to the walk-in latch, so that it is constrained to the release lever 200.

In addition, when the release lever 200 rotates in the first direction or the second direction, the first head portion 11 rotates only until the first head portion 11 is located at the other end of the first guide groove 212, and the first head portion 11 ) is located at the other end of the first guide groove 212, the first cable 10 is constrained to the cable protective cover 30, the first housing 110 and the second housing 120, so that the axial direction Movement is restricted.

Therefore, the first cable 10 can be separated from the release lever 200 only when it moves in the axial direction after moving to the other end of the first guide groove 212, but moves to the other end of the first guide groove 212. It is a structure that cannot be moved in the axial direction. After the first cable 10 is assembled to the release lever 200, when the cable protection cover 30 and the pair of

housings

110 and 120 are assembled, the first cable 10 cannot move in the axial direction. It is constrained to move only along the first guide groove 212 .

In addition, the second cable 20 is inserted from the right side of the first guide part 210 in the drawing, moves in the axial direction, moves onto the second guide part 220, and then moves to the left side (in the circumferential direction) in the drawing. , It is located on the left side of the drawing of the second guide part 220 of the release lever 200.

That is, the second head part 21 is inserted into the second insertion hole 221 and the second cable 20 is inserted into the second insertion slit 223 and moved in the axial direction so that the second head part 21 When located at one end of the second guide groove 222, the second cable 20 is located on the bottom surface of the second insertion slit 223, that is, at one end of the second passage slit 224. In this state, the second head part 21 moves to the other end of the second guide groove 222 and the second cable 20 moves to the other end of the second passage slit 224 .

The assembled second cable 20 has the second head portion 21 of the other end bound to the second guide groove 222 and one end connected to the folding latch so that it is bound to the release lever 200 .

In addition, when the release lever 200 rotates in the first direction or the second direction, the second head portion 21 rotates only until the second head portion 21 is positioned at the other end of the second guide groove 222, and the second head portion 21 ) is located at the other end of the second guide groove 222, the second cable 20 is constrained to the cable protective cover 30, the first housing 110 and the second housing 120, so that the axial direction Movement is restricted.

Therefore, the second cable 20 can be separated from the release lever 200 only when it moves in the axial direction after moving to the other end of the second guide groove 222, but moves to the other end of the second guide groove 222. It is a structure that cannot be moved in the axial direction. After the second cable 20 is assembled to the release lever 200, when the cable protective cover 30 and the pair of

housings

110 and 120 are assembled, the second cable 20 cannot move in the axial direction. It is constrained to move only along the second guide groove 222 .

The actuator 1 of the vehicle seat of the present invention configured as described above operates to pull the first cable 10 or the second cable 20 when the release lever 200 rotates by the driving unit 301, and the driving unit ( 301 is operated to return the first cable 10 or the second cable 20 to the initial position by the return spring 400 when power is cut off.

For example, when the release lever 200 rotates in the first direction, the first head part 11 is supported on the other end of the first guide groove 212, the first cable 10 is pulled, and the second head part 11 is supported. The part 21 moves along the second guide groove 222 .

Figure 9 shows the operating structure of the release actuator 1 of the vehicle seat according to an embodiment of the present invention as an example.

9 (a) is an initial state of the release lever 200, the first head portion 11 is located at the other end of the first guide groove 212, and the first head portion 11 is located at one end of the second guide groove 222. 2 The head part 21 is positioned so that the first cable 10 and the second cable 20 are not pulled, and the walk-in function is locked and the folding function is locked.

In this state, when the drive unit 301 operates and the release lever 200 rotates in the first direction and the first guide groove 212 also rotates in the first direction, which is one direction of the circumferential direction, FIG. 9 (b) As such, the first head portion 11 supported on the other end of the first guide groove 212 is also rotated in the first direction, and the first cable 10 is pulled. At this time, when the second guide groove 222 rotates in the first direction, which is the other direction of the circumferential direction, the second head part 21 moves from the other end of the second guide groove 222 to one side of the circumferential direction, 2 The cable 20 and the second head part 21 are not pulled.

Accordingly, only the first cable 10 is pulled and the walk-in latch is disposed at the walk-in unlocking position to be in a walk-in operable state, and the second cable 20 is not pulled, so the folding locking state is maintained.

In addition, the first bent end 410 of the return spring 400 disposed between the release lever 200 and the second housing 120 while the release lever 200 rotates in the first direction as the driving unit 301 operates. is rotated and compressed, and when the power of the drive unit 301 is cut off, the release lever 200 returns to its initial state by the restoring force of the return spring 400 as shown in (a) of FIG.

In addition, when the release lever 200 rotates in the second direction in the initial state of FIG. 9 (a) and the second guide groove 222 also rotates in the second direction, which is one direction of the circumferential direction, the second guide groove ( The second head part 21 supported by the other end of 222 is also rotated in the second direction and the second cable 20 is pulled. At this time, when the first guide groove 212 rotates in the second direction, which is the other direction in the circumferential direction, the first head part 11 moves from the other end of the first guide groove 212 to one side in the circumferential direction, 1 The cable 10 and the first head part 11 are not pulled.

Accordingly, only the second cable 20 is pulled, the folding latch is disposed in the folding unlocking position, and the folding operation is possible, and the first cable 10 is not pulled, so the walk-in locking state is maintained.

In addition, the second bent end 420 of the return spring 400 disposed between the release lever 200 and the second housing 120 while the release lever 200 rotates in the second direction as the driving unit 301 operates. is rotated and compressed, and the release lever 200 returns to its initial state by the restoring force of the return spring 400 when the driving unit 301 is powered off.

According to the embodiments of the present invention having such a shape and structure, as it is provided as a single actuator and implements the functions of the conventional walk-in release actuator and folding release actuator, the walk-in and folding operation structure of the sheet can be simplified and design freedom There is an effect of improving the degree and space utilization.

In the above, even though all the components constituting the embodiment of the present invention have been described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the components may be selectively combined with one or more to operate.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims

first and second cables each having one end connected to the walk-in latch and the folding latch and having a first head part and a second head part having a cylindrical shape at the other end respectively;

It is provided in the shape of a disk, and a terminal gear is formed on a part of the outer circumferential surface to be connected to the driving unit through a reduction device, and rotates in a first direction or a second direction according to the rotation of the driving unit to drive the first cable or the second cable. Pulling the release lever; and

A return spring installed in the release lever to return the first cable or the second cable to an initial position when power to the driving unit is cut off;

The release lever is a release actuator for a vehicle seat, characterized in that it comprises a pair of guides that are restrained after the first head portion and the second head portion are inserted.
According to claim 1,

The pair of guide parts are formed by protruding in an arc-shaped block shape from opposite side surfaces of the release lever opposite to the terminal gear, and include a first guide part and a second guide part disposed to face each other. The release actuator on the seat.
According to claim 2,

The first guide part,

A first guide groove formed by being depressed at the protruding end surface and extending in a circumferential direction;

a first insertion hole formed to penetrate in an axial direction from a bottom surface of one end of the first guide groove to a protruding end surface of the second guide part and into which the first head part is axially inserted; and

a first insertion slit formed by recessing a portion of the protruding end surface of the second guide part between an outer circumferential surface and the first insertion hole to insert the first cable;

A release actuator for a vehicle seat, characterized in that it comprises a.
According to claim 3,

The second guide part,

a second guide groove formed by being recessed from the protruding end surface and formed long in a circumferential direction so that a portion in the circumferential direction is disposed to face each other with the first guide groove;

a second insertion hole formed to penetrate in an axial direction from a bottom surface of one end of the second guide groove to a protruding end surface of the first guide part and into which the second head part is axially inserted; and

a second insertion slit formed by recessing a portion of the protruding end surface of the first guide part between the outer circumferential surface and the second insertion hole to insert the second cable;

A release actuator for a vehicle seat, characterized in that it comprises a.
According to claim 4,

The first guide part and the second guide part,

Further comprising a first through slit and a second through slit formed by being recessed from bottom surfaces of the first insertion slit and the second insertion slit to the other end along the circumference of the first guide groove and the second guide groove, respectively. The release actuator of the vehicle seat to be.
According to claim 5,

The first insertion hole and the second insertion hole,

A first jamming opening formed by cutting portions of one end portions of the first guide part and the second guide part so that the first cable and the second cable inserted into the first passage slit and the second passage slit are spaced apart from each other; A release actuator for a vehicle seat, characterized in that it has an anti-jamming opening.
According to claim 4,

When the release lever rotates in a first direction, the first head part is supported by the other end of the first guide groove and the first cable is pulled, and the second head part moves along the second guide groove.

When the release lever rotates in the second direction, the second head part is supported by the other end of the second guide groove, the second cable is pulled, and the first head part moves along the first guide groove. Characterized by a release actuator for a vehicle seat.
According to claim 1,

The reduction gear is

a worm gear formed on a driving shaft of the driving unit;

a worm wheel engaged with the worm gear; and

a transmission gear installed coaxially with the worm wheel to rotate together and having a diameter smaller than that of the worm wheel to mesh with the end gear;

A release actuator for a vehicle seat comprising a.