JP2005119368A - Seat adjuster device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent erroneous operation of two operation means in a seat adjuster device equipped with a walk-in mechanism and a fold-down mechanism. <P>SOLUTION: When the walk-in mechanism is operated (a first lever 22 is operated), the fold-down mechanism is prevented from being operated (operation of a second lever member 24 is restricted). Thus, erroneous operation can be prevented even when the device has two operation means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a seat including a walk-in mechanism that slides a seat rail in conjunction with a forward tilting operation of a seat back of a vehicle seat, and a fold-down mechanism that folds the seat back forward so as to be substantially parallel to the seat cushion. The present invention relates to an adjuster device.

Conventionally, in a two-row seat two-door vehicle, in order to improve the ease of getting on and off the rear seat, the seat seat locking mechanism is released in conjunction with the forward tilt of the seat back and the front seat device is moved forward of the vehicle. A walk-in mechanism is used for sliding. Currently, in three-row seat four-door vehicles such as minivans and station wagons, the seat back is folded forward on the seat on the rear door side so that it overlaps the seat cushion in addition to the above walk-in mechanism, and the back of the seat back is the vehicle A seat adjuster device having a fold-down mechanism that is substantially parallel to the floor is employed (see, for example, Patent Document 1).
Hereinafter, a conventional sheet adjuster apparatus will be described with reference to FIG. The numbers used in Patent Document 1 are assigned to the component numbers.

  The conventional seat adjuster device shown in FIG. 10 includes first handle control means 72a for operating the walk-in mechanism and second handle control means 96a for operating the fold-down mechanism, and selectively selects a desired operation. It can be operated. When operating the walk-in mechanism, when the first handle control means 72a is operated, the button clasp 74 located on the recliner control crank member 70 is pulled upward by the connected cable 72b. As a result, the recliner control crank member 70 is rotated, the rotation recliner (reclining unit) is unlocked, and the seat back member can be rotated.

  The link member 76, which is an L-shaped plate member, is connected to a slot 78 formed in the seat back mounting bracket 44 by a guide pin, and the seat back mounting bracket 44 is rotated by rotating the recliner (seat back tilting operation). The operation is the same. The slot 86 of the link member 76 is coaxially locked with the rotational axis of the rotary recliner, and the link member 76 can slide up and down by pulling the cable 98 connected to the guide pin by the second handle control means 96a. ing. On the link member 76, a cam pin 94 that can come into contact with a camming shoulder 112 described later is attached.

  The interlock plate member 100 includes a camming shoulder 112 with which the cam pin 94 abuts, and is supported so as to be rotatable coaxially with the rotation axis of the rotary recliner. A connecting means 124 (cable) connected to the seat rail locking mechanism is attached to the opposite side of the camming shoulder 112 and the center of rotation.

  When the first handle means 72a is operated, the lock of the rotary recliner is released, the seat back rotates, and the cam pin 94 attached to the link member 76 that rotates at the same time comes into contact with the camming shoulder 112, thereby interlocking plate member 100. Rotate at the same time as the seat back. The connecting means 124 connected to the interlock plate member 100 unlocks the seat rail and enables a walk-in operation.

  The fold-down operation is started by operating the second handle control means 96a. When the second handle control means 96a is operated and the connected cable 98 is pulled, the link member 76 is pulled upward. At this time, a foot portion 76c bent in an L shape of the link member 76 abuts on a button fastener 74 located on the recliner control crank member 70, and the recliner control crank is slid by the sliding of the link member 76 upward. As the member 70 rotates, the lock of the rotary recliner is released.

The link member 76 also rotates with the forward tilt of the seat back. However, since the link member 76 is pulled upward, the cam pin 94 gets over without contacting the camming shoulder 112, so the interlock plate member 100 does not rotate with respect to the seat cushion bracket 33 on the fixed side, and the seat rail locking mechanism is not released. When the seat back is tilted forward and moved to a substantially horizontal state, the cam pin 94 can be engaged with the cam pin receiving notch 122 provided in the interlock plate member 100, and the seat back is locked.
Japanese translation of PCT publication No. 2002-501852

  However, the conventional seat adjuster device can perform two operations. However, since the handle control means that operate each other are independent, there is a possibility that the user may perform an unexpected operation depending on the operation procedure. For example, when the second handle control means 96a for operating the fold-down mechanism is operated in a state where the walk-in mechanism is operated and the seat back is tilted forward and the vehicle seat is slid to the foremost part, the interlock plate member 100 is operated. The cam pin 94 holding down is detached from the camming shoulder 112 by the sliding of the link member 76, and the interlock plate member 100 attempts to return to the original position. In the conventional seat adjuster device, the position of the seat moved by the walk-in operation is set in front of the seatable position, and the seat rail device is not locked. Therefore, the cam pin 94 is engaged with the cam pin receiving notch 122. Thus, there is a problem that the seat rail device is not fixed even when the seat back is in a substantially horizontal state.

  Further, in this conventional seat adjuster device, since the walk-in mechanism and the fold-down mechanism are provided in the seat back mounting bracket 44, it is difficult to install a mechanism such as a side airbag or an armrest in the space next to the seat back. become. Further, since the handle control means is also provided on the seat back mounting bracket 44 on the movable side, the position of the handle control means also changes depending on the tilt position of the seat back, which makes it difficult to operate.

  Therefore, the present invention prevents erroneous operation while providing two operation means in a seat adjuster device having a walk-in mechanism and a fold-down mechanism, and has good layout characteristics of parts such as an air bag and an armrest and is easy to operate. An object is to provide a sheet adjuster device.

  In order to achieve the above object, according to the first aspect of the present invention, the first bracket 15 to which the seat back is attached, the second bracket 16 fixed to the seat cushion side, the first bracket 15 and the second bracket 16 are provided. A reclining device 12 having a center shaft 18 for supporting relative rotation, a locking mechanism 17 for locking and unlocking relative rotation of the first bracket 15 and the second bracket 16, and the seat cushion on the vehicle floor. In a seat adjuster device 10 having a seat rail device 11 that is slidably fixed with respect to the seat rail device 11, a hook that is provided on the first bracket 15 and rotates around the central axis of the center shaft 18 as the seat back tilts. It is connected to the member 15a and the lock mechanism 17 to cut the lock and unlock. A first link member 34 that is rotatably supported by the second bracket 16 and that advances and retracts a wire member 33 that operates to regulate and release the seat rail device 11 in the front-rear direction, The first link member 34 has a contact portion 37 that is movable between a position on the locus where the hook member 15a rotates and a position outside the locus, and the contact portion 37 is located on the locus. The second link member 36 that releases the sliding restriction of the seat rail device 11 in conjunction with the movement of the hook member 15a pressing the contact portion 37 by engaging with the first lever member 22 and the second link. It is attached to the second bracket 16 so as to be engageable with the member 36, and when engaging with the first lever member 22, the lock mechanism 17 is rotated in the unlocking direction. A second lever member 24 for moving a contact portion 37 provided on the second link member 36 to a position outside the locus of rotation of the hook member 15a, the hook member 15a being the second link member. There are provided restricting means 16a, 37, 24 for restricting the rotation of the hook member 15a by a predetermined angle or more when the abutting portion 37 of 36 is pressed and for restricting the operation of the second lever member 24. It is characterized by.

  Further, according to a second aspect of the present invention, in the seat adjuster device according to the first aspect, the contact portion of the second link member 36 is located at a position on a locus where the hook member 15a rotates. The second bracket 16 is provided with a first guide groove that guides 37 and a second guide groove that guides the contact portion 37 of the second link member 36 at a position outside the trajectory where the hook member 15a rotates. The second lever member 24 engages with the contact portion 37 of the second link member 36, and the contact portion 37 is on the end portion side of the first guide groove. The movement of the contact portion 37 is restricted when the contact portion 37 is in the connecting portion between the first guide groove and the second guide groove, and the contact portion 37 is moved by the operation of the second lever member 24. It is guided to the second guide groove side and is always the second link member. When the first bracket 15 is rotated when the contact portion 37 of the first guide groove and the second guide groove are in the connecting portion, and the contact portion 37 is in the connecting portion. The hook member 15a fixed to the first bracket 15 abuts on the abutment portion 37, and the abutment portion 37 slides on the first guide groove and abuts on the end portion of the first guide groove. The rotation of the first bracket 15 is stopped at a predetermined angle, and at the same time, the operation of the second lever member 24 is restricted, and the second lever member 24 is operated so that the contact portion 37 is located on the second guide groove side. When the first bracket 15 rotates while being guided by the hook member 15a, the hook member 15a fixed to the first bracket 15 rotates more than a predetermined angle without contacting the contact portion 37. It is characterized by.

  According to the first aspect of the present invention, when the member that performs the walk-in operation is operated, the first lever member is rotated, the lock mechanism is unlocked, and the first bracket fixed to the seat back is tilted forward. Here, when the first bracket tilts forward to a predetermined angle (the forward tilt angle during walk-in), the hook member fixed to the first bracket comes into contact with the contact portion of the second link member, Forward tilt stops at a predetermined angle. Here, when the hook member contacts and presses the contact portion of the second link member, the second link member engages with the first link member, and the wire member is pulled by the first ring member. Release the slide restriction. This completes the walk-in. In this state, that is, in a state where the seat member is tilted forward to a predetermined angle and the hook member is in contact with and pressing the contact portion of the second link member, the operation of the second lever member that folds down by the restricting means Is restricted, and the lock mechanism is not unlocked by the first lever member engaged with the second lever member.

  On the other hand, when the second lever member is folded down, the lock mechanism is unlocked by the first lever engaged with the second lever member in accordance with the operation of the second lever member. Starts to rotate, and the seat back tilts forward with this rotation. Simultaneously with the operation of the second lever member, the contact portion provided on the second link member is moved to a position outside the locus where the hook member of the first bracket rotates. For this reason, the first bracket which has been unlocked and started to rotate is rotated beyond a predetermined angle without the hook member being in contact with the contact portion, and the seat back is tilted to a horizontal position to complete the fold down. Even if the member that performs the walk-in operation is operated and the first lever member is rotated in the state where the fold-down is completed, the first bracket moves the first bracket forward during the walk-in. The hook member that is tilted and fixed only to the contact portion of the second link member because the hook member fixed to the first bracket contacts and presses the contact portion of the second link member. It cannot be done in the down state.

According to the first aspect of the present invention, the front side seat device is interlocked with the forward tilt of the seat back to release the seat rail locking mechanism, and the front seat device is slid forward of the vehicle to improve the ease of getting on and off the rear seat. In a reclining device having two functions: a mechanism and a fold-down mechanism in which the seat back is folded forward so as to overlap the seat cushion and the back of the seat back is substantially parallel to the vehicle floor. When operating (
When the first lever member is operated), the fold-down mechanism cannot be operated (the operation of the second lever member is restricted), so that erroneous operation is prevented even with two operation means. be able to. In addition, since the structural member is installed on the bracket on the fixed side to which the seat cushion or the like is attached, and the mechanism is not provided on the bracket on the movable side, the layout of components such as an airbag and an armrest is good. Furthermore, since the lever member is attached to the fixed side, there is an effect that the operation is easy.

  In the invention of claim 2, when the member for performing the walk-in operation is operated, the first lever member is rotated, the lock mechanism is unlocked, and the first bracket fixed to the seat back is tilted forward. Here, when the first bracket tilts forward to a predetermined angle (the forward tilt angle during walk-in), the hook member fixed to the first bracket comes into contact with the contact portion of the second link member, and the contact portion is The rotation of the first bracket is stopped at a predetermined angle by sliding on the first guide groove of the long hole and coming into contact with the end portion of the first guide groove. Here, when the hook member contacts and presses the contact portion of the second link member, the second link member engages with the first link member, and the wire member is pulled by the first ring member. Release the slide restriction. This completes the walk-in. In this state, that is, the hook member tilts forward to a predetermined angle of the seat back and the hook member contacts the contact portion of the second link member, and the contact portion is positioned on the terminal end side of the first guide groove of the long hole. At this time, the operation of the second lever member that performs the fold-down is restricted, and the lock mechanism is not unlocked by the first lever member that engages with the second lever member.

  On the other hand, when the second lever member is folded down, the lock mechanism is unlocked by the first lever engaged with the second lever member in accordance with the operation of the second lever member. Starts to rotate, and the seat back tilts forward with this rotation. Simultaneously with the operation of the second lever member, the contact portion provided on the second link member is moved along the second guide groove of the elongated hole to a position outside the locus where the hook member of the first bracket rotates. Let For this reason, the first bracket which has been unlocked and started to rotate is rotated beyond a predetermined angle without the hook member being in contact with the contact portion, and the seat back is tilted to a horizontal position to complete the fold down. Even if the member that performs the walk-in operation is operated and the first lever member is rotated in the state where the fold-down is completed, the first bracket moves the first bracket forward during the walk-in. The hook member that is tilted and fixed only to the contact portion of the second link member because the hook member fixed to the first bracket contacts and presses the contact portion of the second link member. It cannot be done in the down state.

  In the invention of claim 2, since the restricting means is constituted by a long hole drilled in the second bracket, assembly is easy without increasing the number of parts.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a sheet adjuster 10 showing an embodiment of the present invention. The seat adjuster device 10 according to the embodiment of the present invention includes a seat rail device 11 that fixes the vehicle seat 1 to the vehicle floor 5 so as to be slidable in the front-rear direction, and the seat back 2 is tilted with respect to the seat cushion 3. A reclining device 12 connected to the seat rail device 11 so as to be adjustable in angle is provided. Hereinafter, the reclining device 12 which is a characteristic part of the present invention will be particularly described.

  2 and 3 are a perspective view and an exploded perspective view showing the reclining device 12, and FIG. 4 is a plan view showing the reclining device 12 in a normal state in which an occupant can sit on the vehicle seat 1. The reclining device 12 includes a first bracket 15 to which a member on the seat back 2 side (for example, a seat back frame) is attached, and a second bracket 16 to be attached to a member on the seat cushion side. The first bracket 15 and the second bracket 16 is connected by a reclining unit 17 that adjusts the tilt angle of the first bracket 15 with respect to the second bracket 16 and can be locked and unlocked at a predetermined angle.

  5 is a cross-sectional view taken along the line AA of FIG. 4, but it should be noted that for the sake of illustration, it is shown as being horizontally reversed from FIG. As shown in FIG. 5, the reclining unit 17 includes a base plate 17a, a gear plate 17b that is rotatably mounted on the base plate 17a and has internal teeth, and is mounted on the base plate 17a so as to be slidable in the radial direction. A lock gear 17c having external teeth that can mesh with the internal teeth of the plate 17b, and a cam 17d that controls sliding of the lock gear 17c in the radial direction are provided. The first bracket 15 is fixed to the gear plate 17b, and the second bracket 16 is fixed to the base plate 17a. A flange portion 15a (see FIG. 3) is formed integrally with the front lower portion of the first bracket 15 so as to come into contact with a stepped pin 37 installed on a second link member 36 to be described later by tilting forward.

  A non-circular hole (not shown) is formed in the center of the cam 17d shown in FIG. 5. A center shaft 18 is inserted into the non-circular hole, and the lock gear 17c and the gear plate are rotated by rotating the center shaft 18. 17b can be engaged and released, and the rotation of the base plate 17a and the gear plate 17b can be locked and unlocked. That is, the tilt angle of the first bracket 15 with respect to the second bracket 16 can be adjusted. A hook 20 and a hook 21 are attached to the first bracket 15 and the second bracket 16, respectively. A direction in which the first bracket 15 tilts forward with respect to the second bracket 16 by assembling the spiral spring 19 to the hook. Be energized by.

  A terminal on one end side of the center shaft 18 is processed in a substantially oval shape, and a first lever member 22 for rotating the center shaft 18 is attached (see FIG. 3). The first lever member 22 has a shape that is bent in a substantially L shape on the opposite side to the side connected to the center shaft 18 and extends backward, and a mounting portion for attaching the cable 23 to the distal end portion extending backward. An attachment portion 22b to which a stepped pin 26 with which the second lever member 24 can be engaged is attached. In addition, a tension coil spring 25 that urges the first lever member 22 rearward (counterclockwise direction in FIG. 4) is attached to a bent portion that is bent in a substantially L shape, so that the reclining unit 17 is locked. Always energized.

  The second lever member 24 is a substantially U-shaped plate member, and a circular arc hole 24a is formed on a circumference centering on the axis of the center shaft 18 at a terminal portion connected to the first lever member 22. The stepped pin 26 attached to the attachment portion 22b of the first lever member 22 is inserted, and the stepped pin 26 is slidably connected in the arc hole 24a by a push nut 27. The second lever member 24 has a substantially U-shaped bent portion, a long hole 24b that is long in the tangential direction of a circle centering on the axis of the center shaft 18, and a terminal opposite to the arc hole 24a. A circular hole 24c for connecting with the operation lever 28 is formed.

  An operation lever 28 connected to the second lever member 24 is attached to the lower portion of the second bracket 16 so that a substantially bent portion thereof can be rotated by a rotary shaft 29. An operation knob 30 (see FIG. 2) is attached to one end side of the operation lever 28, and a circular hole 28a is formed in the terminal portion on the opposite side, and the second lever member 24 is provided. The circular hole 24c is connected to the circular hole 28a by a pin 31, and the second lever member 24 is moved by rotating the operation lever 28. The operation lever 28 is urged in a direction (counterclockwise in the figure) by pulling the terminal on the side where the circular hole 28a is formed and returning to the normal position shown in FIG.

  In the present embodiment, the operation lever 28 moves the pin 31 attached to the end of the second lever member 24 so as to draw an arc around the rotation axis 29 of the operation lever 28. However, the second bracket 16 is provided with an arc-shaped groove that is the same as the locus of movement of the pin 31 described above, and the pin 31 slides inside the groove so that the movement of the second lever member 24 can be restricted. It is also possible to configure the second lever member 24 to be moved by attaching a transmission means such as a cable.

  A first link member 34 to which a cable 33 connected to a slide lock of the seat rail device 11 is attached is rotatably attached to a lower portion of the second bracket 16 adjacent to the operation lever 28 by a rotary shaft 35. Two cables 33 are attached so as to be connected to the seat rail devices 11 provided on the left and right sides of the vehicle seat 1 respectively. The first link member 34 extends from the rotation shaft 35 in the lateral direction, and a lever portion 34a to which the cable 33 is attached. The lower link shaft 35 is engaged with a second link member 36, which will be described later, and is substantially V-shaped downward. And a notch 34b that is open in a shape, and a flange 34c for suppressing deformation of the second link member 36 is provided above the rotation shaft 35.

  The second link member 36 has an elongated shape extending in the vertical direction, and the rotation shaft 35 is inserted into a long hole 36a drilled in the lower portion so that the first link member 34, the second bracket 16, It is attached so that it may interpose. At the lower end of the long hole 36a, a bent portion 36b bent in the direction of the first link member 34 in an L shape and a circular protrusion 36c punched in the same direction as the bent portion 36b are formed. The first link member 34 is engaged with the notch 34b (see FIGS. 2 and 4).

  A stepped pin 37 is fixed to the terminal opposite to the bent portion 36b. As shown in FIG. 5, the stepped pin 37 is attached to the surface of the second link member 36 on the second bracket 16 side. A first step portion 37a and a second step portion 37b having a smaller radius than the first step portion are provided on the opposite surface. As shown in FIG. 3, the first step portion 37 a is inserted into the hollow 16 a formed in the second bracket 16, and the second step portion 37 b is inserted into the elongated hole 24 b of the second lever member 24. ing. Further, a tension coil spring 38 is hooked on the second step portion 37b, and the first step portion 37a is biased in a direction in which the first step portion 37a comes into contact with the bent portion of the hollow 16a.

  Next, the operation of the reclining device 12 according to the present embodiment will be described. 6 and 7 are plan views showing a state when the reclining device 12 is walked in. The reclining unit 17, the second bracket 16, the spring, and the like are omitted for easy understanding. First, when the lock of the reclining unit 17 is released by pulling the cable 23 and rotating the connected first lever member 22 clockwise in the drawing, the first bracket 15 and the first bracket 15 are attached. The seat back falls forward of the vehicle seat by the urging force of the spiral spring 19. As shown in FIG. 6, the end surface of the flange portion 15 a of the first bracket 15 comes into contact with the first step portion 37 a of the stepped pin 37 positioned on the trajectory due to the forward tilt of a predetermined angle. At this time, the first lever member 22 and the second lever member 24 are assembled so as to be engageable by the stepped pin 26, but the first lever member 22 is allowed to rotate while the second lever member 24 does not move. Is done. This is because the arc hole 24a of the second lever member 24 is formed on an arc centered on the rotation center of the first lever member 22, so that the stepped pin 26 only slides in the arc hole 24a. The second lever member 24 does not hinder this movement.

  When the first bracket 15 further falls, the flange portion 15a of the first bracket 15 pushes the stepped pin 37 along the long hole 24b of the second lever member 24 as shown in FIG. The first step portion 37a of the stepped pin 37 comes into contact with the end portion of the perforated hole 16a so that the operation is restricted, whereby the forward rotation of the first bracket 15, that is, the seat back 2, is at a predetermined angle. Will stop at. When the stepped pin 37 moves along the long hole 24b, the second link member 36 to which the stepped pin 37 is attached moves the rotating shaft 35 inserted through the long hole 36a formed in the longitudinal direction thereof. It rotates while sliding along the elongated hole 36a in the center.

  The first link member 34 that is coaxially supported in conjunction with the operation of the second link member 36 is pushed up inside the notch 34b by the bent portion 36b of the second link member 36, and the first link member. The cable 33 connected to 34 is pulled up. When the slide lock device (not shown) of the seat rail device 11 shown in FIG. 1 is released by pulling the cable 33, the urging of a motor or the like installed in the seat rail device is performed as in the conventional walk-in mechanism. The vehicle seat slides forward of the vehicle by the member.

  As described above with reference to FIG. 7, in the state where the seat back is tilted forward by a predetermined angle and the vehicle seat is moved forward, the operation lever 28 for operating the fold down mechanism is connected. The second step portion 37 b of the stepped pin 37 is inserted into the long hole 24 b of the second lever member 24, and the first step portion 37 a of the stepped pin is formed in the second bracket 16. Since it is restricted by the hole 16a, it cannot be moved. That is, in the normal state shown in FIG. 4, the stepped pin 37 is at the center position of the U-shaped hole 16a, and as will be described later with reference to FIG. By sliding to the lower left side, the operation lever 28 for operating the second lever member 24 can be operated. However, as shown in FIG. 7, the stepped pin 37 moves to the right side of the hole 16a in the figure. During the operation, the operation of the second lever member 24 is restricted and the operation lever 28 cannot be operated. Thereby, an erroneous operation can be prevented.

  8 and 9 are plan views showing the state of the lever member and the link member when the reclining device 12 is folded down. FIG. 9 shows a state in which after the fold-down operation is performed, the operation lever 28 is released to return to the original position. As shown in FIG. 8, when the operation lever 28 is pulled upward, the second lever member 24 is lowered, and the first lever member 22 connected by the stepped pin 26 is interlocked with the operation of the second lever member 24. Then, the reclining unit 17 is rotated in the clockwise direction in the figure when the lock is released. When the reclining unit 17 is unlocked, the first bracket 15 and the seat back 2 attached to the first bracket 15 are tilted forward.

  Here, when the second lever member 24 is pulled down, the stepped pin 37 inserted into the elongated hole 24b moves obliquely downward so that the stepped pin 37 follows the character hole 16a of the second bracket 16. Then, since the stepped pin 37 comes off from the locus on which the flange portion 15a operates, the first bracket 15 is tilted to a state in which the seat back 2 is substantially horizontal with the seat cushion 3 without being restricted in forward tilt. At this time, the second link member 36 to which the stepped pin 37 is attached slides while rotating around the rotation shaft 35 as the stepped pin 37 moves obliquely downward, and the bent portion 36b Since the engagement with the notch 34b of the first link member 34 is released, the first link member 34 does not rotate, and the slide lock mechanism of the seat rail device is not released.

  Even if the walk-in mechanism is operated after the fold-down mechanism is operated, the cable 23 is connected to the normal state shown in FIG. 4 except for the first bracket 15 when the operation lever 28 shown in FIG. 9 is released. Even if it is pulled, the locking mechanism of the reclining unit 17 only switches between the locked state and the unlocked state. That is, the pulling up of the cable 33 for releasing the slide lock mechanism described above with reference to FIG. 7 is performed only when the flange portion 15 a comes into contact with the stepped pin 37 due to the forward tilt of the first bracket 15. It is configured. For this reason, the slide lock mechanism of the seat rail device 11 is not released, and erroneous operation can be prevented.

1 is a side view showing a sheet adjuster device 10 according to the present invention. It is a perspective view which shows the reclining apparatus 12 which concerns on this invention. It is a disassembled perspective view which shows the reclining apparatus 12 which concerns on this invention. 3 is a plan view showing a normal state of the reclining device 12. FIG. It is the sectional view on the AA line in FIG. It is a top view which shows operation | movement of a link member etc. at the time of walk-in operation | movement. It is a top view which shows operation | movement of a link member etc. at the time of walk-in operation | movement. It is a top view which shows operation | movement of a link member etc. at the time of fold down operation | movement. It is a top view which shows operation | movement of a link member etc. at the time of fold down operation | movement. It is a perspective view which shows the conventional reclining apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 3 Seat cushion 5 Vehicle floor 10 Seat adjuster device 11 Seat rail device 12 Reclining device 15 First bracket 16 Second bracket 17 Reclining unit 18 Center shaft 19 Spiral spring 22 First lever member 23 Cable 24 Second 2 lever member 26 stepped pin 28 operation lever 29 rotating shaft 33 cable 34 first link member 36 second link member 37 stepped pin

Claims (2)

A first bracket to which a seat back is attached;
A second bracket fixed to the seat cushion side;
A center shaft that supports the first bracket and the second bracket in a relatively rotatable manner;
A reclining device having a lock mechanism for locking and unlocking relative rotation of the first bracket and the second bracket;
In a seat adjuster device comprising a seat rail device for slidably fixing the seat cushion to a vehicle floor,
A hook member that is provided on the first bracket and rotates around the central axis of the center shaft as the seat back tilts;
A first lever member connected to the locking mechanism to switch between locking and unlocking;
A first link member that is rotatably supported by the second bracket and that advances and retracts a wire member that operates to restrict and release the seat rail device in the front-rear direction;
The hook member has a contact portion that is movable between a position on the locus where the hook member rotates and a position outside the locus, and when the contact portion is located on the locus, the hook member engages with the first link member. A second link member that releases the sliding restriction of the seat rail device in conjunction with the operation of the hook member pressing the contact portion;
The second link member is attached to the second bracket so as to be engageable with the first lever member and the second link member. When the first lever member is engaged, the lock mechanism is rotated in an unlocking direction, and the second link is engaged. A second lever member that moves a contact portion provided on the member to a position outside the locus of rotation of the hook member,
When the hook member presses the contact portion of the second link member, there is provided a restricting means for restricting the rotation of the hook member by a predetermined angle or more and restricting the operation of the second lever member. A sheet adjuster device characterized by this. The restricting means includes a first guide groove for guiding a contact portion of the second link member to a position on a locus on which the hook member rotates, and a second guide groove on a position outside the locus on which the hook member rotates. The second bracket having a second guide groove for guiding the abutting portion of the link member, and a long hole shaped like a hole formed in the second bracket.
The second lever member engages with the contact portion of the second link member, and the operation is restricted when the contact portion is on the terminal end side of the first guide groove, and the contact portion is the first guide groove. And the second guide groove is allowed to move, the operation of the second lever member guides the contact portion to the second guide groove side,
The contact portion of the second link member is always at the connecting portion between the first guide groove and the second guide groove,
When the first bracket rotates when the contact portion is in the connecting portion, the hook member fixed to the first bracket contacts the contact portion, and the contact portion is placed on the first guide groove. And at the same time stopping the rotation of the first bracket at a predetermined angle, and restricting the operation of the second lever member,
When the second lever member is operated and the contact portion is guided to the second guide groove side, when the first bracket is rotated, the hook member fixed to the first bracket is in contact with the second bracket member. The seat adjuster device according to claim 1, wherein the seat adjuster rotates more than a predetermined angle without contacting the contact portion.

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