JP2010052529A - Vehicle seat folding mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a vehicle seat folding mechanism by reducing the number of components thereof as much as possible. <P>SOLUTION: An engagement projecting part 20 which is integrally rotated with an arm plate 14 is provided on the arm plate 14. Pulling members (30, 40) which are turned by pressing the engagement projecting part 20 to pull an unlocking cable 10, and a stopper member 50 having an abutting surface 52 to be abutted on the pulling members (30, 40) are provided on one side of a base plate 12 facing the engagement projecting part 20. By tilting a seatback 6 forwardly, the pulling members (30, 40) are turned by pressing the engagement projecting part 20, the pulling members (30, 40) are abutted on the abutting surface 52 of the stopper member 50 while pulling the unlocking cable 10, and the seatback 6 is kept in a forwardly tilted state. By releasing the abutting of the pulling members (30, 40) on the abutting surface 52, the seatback 6 in the forwardly tilted state is displaced in a largely collapsed posture. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle seat folding mechanism.

As this type of folding mechanism, a configuration is known in which the seat back is tilted forward with respect to the seat cushion to pull the lock release cable of the seat slide mechanism so that the vehicle seat can be moved back and forth in the vehicle ( (See Patent Document 1). In this vehicle seat, an arm plate fixed to the seat back is pivotally supported in a tilting direction with respect to a base plate fixed to the seat cushion, and folding mechanisms are disposed on both sides of each plate. .
That is, an engagement protrusion that rotates integrally with the arm plate is fixed to one side of the arm plate. A disc-shaped stopper disk that rotates coaxially with the arm plate is fixed to the other side of the arm plate, and a convex portion (engaging portion) is formed on a part of the outer peripheral surface of the stopper disk.
On the other hand, on one side of the base plate, a traction member that rotates by the pressing of the engaging protrusion and pulls the unlocking cable is pivotally supported. On the other side of the base plate, a stopper member that engages with a stopper disk (engagement portion) and restricts the rotation is provided.

  As the seat back is tilted forward, the engagement projection on one side of the arm plate comes into contact with and presses the pulling member on the one side of the base plate, so that the unlocking cable is pulled and the vehicle seat can slide. . Further, when the seat back is tilted to the forward tilt posture, the stopper disk (engagement portion) on the other side of the arm plate is engaged with the stopper member on the other side of the base plate, and the tilting operation of the seat back is restricted. As described above, according to the known technology, after the seat back is held in a forward leaning posture, the vehicle seat is slid forward to form a passage in which an occupant can get on and off (walk in). it can.

Further, in the above folding mechanism, since the tilt of the seat back is allowed if the engagement between the stopper disk and the stopper member is released, the seat back in the forward tilt position can be tilted forward (a large tilt position) as it is.
For this reason, according to the vehicle seat of the publicly known technology, the vehicle interior space can be expanded relatively smoothly by directly tilting the seat back in the forward inclined posture.
JP 2004-58928 A

However, in the above known technique, since the folding mechanism is distributed and arranged on both sides of each plate, the number of parts for operating the mechanism in an interlocking manner increases, leading to an increase in complexity and size of the mechanism.
The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to reduce the number of parts of the folding mechanism as much as possible to make it compact.

As means for solving the above problems, the folding mechanism according to the first aspect of the present invention pulls the lock release cable of the seat slide mechanism by tilting the seat back forward with respect to the seat cushion, and moves the vehicle seat forward and backward. It is the structure which can be moved to. Further, the vehicle seat folding mechanism is configured to be able to directly displace a forwardly tilted seat back into a large tilted posture in which the seat back is tilted forward with respect to the seat cushion.
The vehicle seat of the present invention is configured such that an arm plate fixed to a seat back is pivotally supported in a tilting direction with respect to a base plate fixed to a seat cushion. Each of these plates is provided with a folding mechanism, and it is desirable that the configuration therefor be made compact by reducing the number of parts as much as possible.

Therefore, in the folding mechanism of the present invention, the above-described arm plate is provided with an engaging protrusion that rotates integrally with the arm plate. Then, on one side of the base plate facing the engagement protrusion, a traction member that rotates by pressing the engagement protrusion and pulls the unlocking cable, and a stopper member that has a contact surface that can contact the traction member are provided. We decided to provide it.
As the seat back is tilted forward, the pulling member rotates by the pressing of the engaging projection to pull the lock release cable, while the pulling member abuts against the contact surface of the stopper member, so that the seat back is tilted forward. Hold on. Further, by releasing the contact between the pulling member and the contact surface, the seat back in the forward tilted posture is largely tilted and can be displaced to the posture.
As described above, according to the present invention, the vehicle seat can be slidably moved with the seat back in the forward inclined posture by the compact configuration in which the folding mechanisms are collectively arranged on one side of each plate. Furthermore, according to the present invention, the seatback in the forward tilted posture can be greatly tilted and directly displaced to the posture by the compact folding mechanism.

A vehicle seat folding mechanism according to a second aspect of the present invention is the folding mechanism according to the first aspect of the present invention, wherein the traction member described above is composed of a first traction member and a second traction member.
The first pulling member is pivotally supported by the base plate so as to abut on the engaging protrusion at one end side thereof and rotate. Further, the second pulling member has a hole portion into which the protrusion provided on the other end of the first pulling member can be fitted, and the base plate rotates in conjunction with the pressing of the protrusion as the first pulling member rotates. Is pivotally supported.
Then, by rotating the first traction member and the second traction member in conjunction with each other by pressing the engaging protrusion, the lock release cable connected to the second traction member is pulled, and then concentric with the rotation axis of the first traction member. The protrusion enters the groove of the hole formed in the shape. And it was set as the structure by which rotation of a 2nd traction member is controlled because a projection part moves along a groove part with rotation of a 1st traction member. As described above, in the present invention, in a simple configuration in which the first traction member and the second traction member are rotated together, the traction stroke of the unlocking cable is made substantially constant by regulating the rotation amount of the second traction member. Can do.

  According to the first aspect of the present invention, the number of parts of the folding mechanism can be reduced as much as possible to make it compact. According to the second invention, the seat back can be tilted without applying an excessive load on the unlocking cable or the like.

  The best mode for carrying out the present invention will be described below with reference to FIGS. In each of the drawings, a symbol F is appropriately attached to the front of the vehicle seat, and a symbol B is appropriately attached to the rear of the vehicle seat. Then, based on the state of FIG. 2, the direction of each member (vertical direction, front-rear direction) and the rotation direction of each member (clockwise, counterclockwise) are determined.

[Vehicle seat]
Referring to FIG. 1, the vehicle seat 2 of this embodiment includes a seat cushion 4, a seat back 6 that can be tilted with respect to the seat cushion 4, and rail members (upper rail 8 a and lower rail 8 b). Is provided. The upper rail 8a fixed to the lower portion of the seat cushion 4 is slidably attached to the lower rail 8b fixed to the vehicle floor.
The rail member incorporates a seat slide mechanism (not shown), and an unlock cable 10 extending from the mechanism is introduced into the seat from the lower part of the seat cushion 4.

In this embodiment, when the seat back 6 is tilted forward with respect to the seat cushion 4 (a forward tilted posture), the lock release cable 10 of the seat slide mechanism is pulled. The vehicle seat 2 is configured to be slidable back and forth along the lower rail 8b on the passenger compartment floor (indicated by a one-dot broken line in FIG. 1A).
Further, the vehicle seat 2 is configured to be able to directly displace the seat back 6 in the forward tilted posture to the state where the seat cushion 6 is tilted forward (largely tilted posture) (two-dot broken line state in FIG. 1B).

Referring to FIG. 2, the vehicle seat 2 includes a base plate 12 (vertically long flat plate member) fixed to the side surface of the seat cushion 4 and an arm plate 14 (vertically long flat plate member) fixed to the side surface of the seat back 6. The shaft is supported so as to be rotatable in the tilting direction.
In this embodiment, a rotation shaft (reclining shaft R) provided at the lower end portion of the arm plate 14 is rotatably inserted into the insertion hole 16 provided at the upper end portion of the base plate 12 (see FIGS. 3 and 5). Then, the rear surface side (one side) of the base plate 12 and the front surface side of the arm plate 14 are arranged facing each other with a predetermined gap between the plates.

The reclining shaft R is provided with a reclining mechanism (not shown) for tilting the seat back 6 with respect to the seat cushion 4. A first lever member 19 extending in front of the seat is fitted to the reclining shaft R. Then, the seat back 6 can be tilted forward by lifting the first lever member 19 upward of the seat and releasing the lock of the reclining mechanism.
Each of the plates is provided with a folding mechanism (detailed configuration will be described later). It is desirable that the mechanism for that purpose be made compact by reducing the number of parts as much as possible. Therefore, in this embodiment, as will be described later, the number of parts of the folding mechanism is reduced as much as possible to make the mechanism compact.

[Folding mechanism]
Referring to FIG. 2, the folding mechanism of the present embodiment includes an engagement protrusion 20 provided on the arm plate 14 and a traction member (first traction member 30 and second traction member 40) provided on the base plate 12. The stopper member 50 is also provided on the base plate 12.
In the present embodiment, as will be described later, the folding mechanism is collectively arranged between the base plate 12 and the arm plate 14 (one side of each plate), thereby reducing the size of the mechanism. Hereinafter, each configuration will be described in detail.

(Engaging protrusion)
The engaging protrusion 20 of the present embodiment is an arcuate member fixed to the peripheral surface of the reclining shaft R described above on the surface side of the arm plate 14. The engagement protrusion 20 has a protrusion 22 (substantially trapezoidal shape) protruding outward in the radial direction of the reclining shaft R.
The engaging protrusion 20 is fixed to the reclining shaft R so that the convex portion 22 faces the front of the seat when the seat back 6 stands. The engagement protrusion 20 is rotated counterclockwise in FIG. 2 integrally with the arm plate 14 by the forward tilting operation of the seat back 6. If it does so, the convex part 22 of the engagement protrusion 20 will contact | abut and press the below-mentioned traction member arrange | positioned under a sheet | seat (refer FIG. 4).

(Traction member)
And the pulling member of a present Example is divided into 2 parts, and with reference to FIG.2 and FIG.3, it has the 1st pulling member 30 arrange | positioned above a sheet | seat, and the 2nd pulling member 40 arrange | positioned below a sheet | seat ( Details of each member will be described later).
The first pulling member 30 and the second pulling member 40 are pivotally supported on the back surface side of the base plate 12 (one side of the base plate facing the engaging protrusion). In the present embodiment, a bracket 18 having a longitudinal section crank shape is attached to the base plate 12. As will be described later, the first pulling member 30 is pivotally supported with respect to the first flange portion 18a of the bracket 18 extending above the seat. Further, the second pulling member 40 is pivotally supported with respect to the second flange portion 18b of the bracket 18 extending below the seat.

(First pulling member)
The first pulling member 30 of the present embodiment is a flat plate member that is substantially V-shaped when viewed from the front. The first pulling member 30 has a substantially crank shape in longitudinal section, and one end side (upper end side) thereof is raised by one step (see FIG. 3A). The first pulling member 30 has a long cylindrical projecting pin 32 projecting from the back surface on one end side (the surface facing the engaging projection), and the short tubular projecting portion 34 on the back surface of the other end side. Is protruding.
Then, referring to FIG. 2, the central portion of the first traction member 30 is attached to the bracket 18 (while the one end side of the first traction member 30 is disposed within the rotation locus of the engagement protrusion 20 (convex portion 22). The first flange portion 18a) is rotatably supported by a fixed first rotating shaft 36. Then, by attaching the coil spring 38 attached to the first pulling member 30 to the locking piece 13 fixed to the base plate 12, the first pulling member 30 is biased counterclockwise in FIG.

(Second pulling member)
Further, the second pulling member 40 of the present embodiment is a flat plate member that is substantially rectangular in a front view. On one end side (upper end side) of the second pulling member 40, a hole portion 42 into which the protrusion 34 of the first pulling member 30 can be fitted is provided. The hole portion 42 has a substantially Y-shape when viewed from the front, and is formed on the first groove portion 44a in the front of the seat, the second groove portion 44b (the other groove portion) in the rear of the seat, and the base end side of both the groove portions. It has a fitting groove 44c (details of each groove will be described later).
One end of the second pulling member 40 is inwardly folded, and the lock release cable 10 is hooked on this one end side (see FIG. 3B).
The second pulling member 40 is fixed to the bracket 18 (second flange portion 18b) while the projection 34 of the first pulling member 30 is inserted into the fitting groove 44c of the second pulling member 40. A two-rotation shaft 46 is rotatably supported. Then, the spiral spring 48 is fitted on the second rotating shaft 46, whereby the second pulling member 40 is urged clockwise in FIG. 2 and held at the neutral position in FIG. As will be described later, when the second pulling member 40 rotates counterclockwise (by shifting to the tilted position), the unlocking cable 10 hooked on the second pulling member 40 is pulled to the front of the seat. (See FIG. 4).

(Groove)
The first groove portion 44a and the second groove portion 44b (other groove portions) described above each have an arc shape, and have a substantially V shape when viewed from the front, and are divided into two forks from the fitting groove portion 44c.
The first groove portion 44a is concentric with the first rotation shaft 36 of the first traction member 30 when the seat back 6 is in the forward inclined posture (when the second traction member 40 is in the inclined position). (See FIG. 4). A connecting portion between the first groove 44a and the fitting groove 44c slightly protrudes into the hole 42 (a first crank surface 45a is formed). When the first pulling member 30 is in the tilted position, the protrusion 34 can pass over the first crank surface 45a, and the protrusion 34 can enter the first groove 44a from the fitting groove 44c.

  The second groove 44b is concentric with the first rotation shaft 36 of the first pulling member 30 when the second pulling member 40 is in the neutral position (see FIG. 2). A connecting portion between the second groove 44b and the fitting groove 44c slightly protrudes into the hole 42 (a second crank surface 45b is formed). When the second pulling member 40 is in the neutral position, the protrusion 34 can pass over the second crank surface 45b, and the protrusion 34 can enter the second groove 44b from the fitting groove 44c.

(Stopper member)
The stopper member 50 of the present embodiment is a flat plate member having a substantially rectangular shape when viewed from the front. Then, on one end side (front end side) of the stopper member 50, referring to FIG. 2, a front surface (contact surface 52) capable of contacting the first pulling member 30 and an upper surface 54 connected to the contact surface 52. Is provided.
And the stopper member 50 is arrange | positioned in the sheet | seat back rather than the above-mentioned 1st pulling member 30, and is pivotally supported by the baseplate 12 back surface side (one side) (refer FIG. 5). In this embodiment, after the third rotating shaft 56 (long cylindrical shape) is fitted into the through hole 15 of the base plate 12, the stopper member 50 is attached from the back side of the base plate 12.
Then, the contact surface 52 of the stopper member 50 is arranged in the rotation locus of the protruding pin 32, the other end side of the stopper member 50 is arranged below the rotation locus, and the other end side of the stopper member 50 is arranged in the first position. The shaft is rotatably supported with respect to the three rotation shafts 56. Thus, after arrange | positioning the stopper member 50 in the downward inclined form, the spiral spring 58 is fitted to the 3rd rotating shaft 56, and the stopper member 50 is urged | biased clockwise of FIG.

Further, the second lever member 59 is fitted to the third rotating shaft 56 from the surface side of the base plate 12. Then, by pulling down the second lever member 59 extending in front of the seat to the lower side of the seat, one end side of the stopper member 50 rotates counterclockwise in FIG.
When the stopper member 50 is rotated counterclockwise by operating the second lever member 59, the first pulling member 30 (projecting pin 32) rides on the upper surface 54 of the stopper member 50 and contacts the contact surface 52. The contact is released (see FIG. 6).

[Folding operation]
2 and 4, the first lever member 19 is operated to unlock the reclining mechanism, and then the seat back 6 is tilted forward. Then, the engaging protrusion 20 of the arm plate 14 rotates counterclockwise around the reclining axis R, and the convex portion 22 of the engaging protrusion 20 becomes the first pulling member 30 (protruding pin 32) below the seat. Abut and press. By the pressing of the engaging protrusion 20, the first pulling member 30 rotates clockwise about the first rotation shaft 36. Then, the projection 34 at the other end of the first pulling member 30 presses the second pulling member 40 (wall surface of the fitting groove 44 c), and the second pulling member 40 rotates counterclockwise around the second rotation shaft 46.
By the interlocking rotation of the first pulling member 30 and the second pulling member 40, the lock release cable 10 of the second pulling member 40 is pulled, and the lock of the seat slide mechanism is released.

When the second pulling member 40 reaches the tilted position, the protrusion 34 of the first pulling member 30 gets over the first crank surface 45a of the hole 42 and enters the first groove 44a from the fitting groove 44c. As the first traction member 30 rotates, the protrusion 34 moves along the first groove 44a, thereby restricting the rotation of the second traction member 40 (regardless of the rotation of the first traction member 30). Hold in tilted position.
Then, when the first pulling member 30 (projecting pin 32) contacts the contact surface 52 of the stopper member 50, the rotation of the engaging protrusion 20 is restricted, and the seat back 6 is held in a forward inclined posture. As described above, in the present embodiment, after the seat back 6 is held in a forward leaning posture, the vehicle seat 2 is slid forward to form a passage in which the occupant can get on and off (walk-in is possible). (See FIG. 1).

Furthermore, in the present embodiment, referring to FIG. 6, when the stopper member 50 rotates counterclockwise by the operation of the second lever member 59, the first pulling member 30 (the protruding pin 32) is moved to the upper surface 54 of the stopper member 50. The contact with the contact surface 52 is released. By doing so, the rotation of the first pulling member 30 is allowed, and the engagement protrusion 20 is rotated, so that the seat back 6 in the forward leaning posture can be largely tilted and directly displaced to the posture. At this time, even if the first traction member 30 rotates, the projection 34 of the first traction member 30 moves along the first groove 44a of the second traction member 40, so that the second traction member 40 tilts. Held in position.
Then, the engagement protrusion 20 moves to the rear of the seat with respect to the stopper member 50, so that the seat back 6 is largely tilted. Then, the first traction member 30 and the second traction member 40 released from the contact with the engagement protrusion 20 are returned to the neutral state by the respective urging forces. Thus, according to the vehicle seat 2 of the present embodiment, the vehicle interior space can be expanded relatively smoothly by directly tilting the seat back 6 in the forward tilted posture (see FIG. 1). .

[Cause action]
Then, referring to FIG. 7, the first lever member 19 is operated, and the seat back 6 in the largely tilted posture is tilted forward or erected. Then, the engaging protrusion 20 that rotates clockwise passes through the upper surface 54 (inclined downward) of the stopper member 50 and moves to the front side of the sheet while pushing one end side of the stopper member 50 out of the rotation locus. Then, the engaging protrusion 20 contacts the first pulling member 30 from the rear of the seat and rotates counterclockwise. At this time, the protrusion 34 of the first pulling member 30 is connected to the second pulling member 40 ( It moves into the second groove 44b at the neutral position. For this reason, in this embodiment, the second traction member 40 is held at the neutral position regardless of the reverse rotation of the first traction member 30.
For this reason, in the present embodiment, even when the seatback 6 in a largely tilted posture is tilted forward or standing, the rotation of the second pulling member 40 is restricted to prevent an excessive load from being applied to the unlocking cable 10. Or it can be reduced.

As described above, in the present embodiment, the vehicle seat 2 is slidable with the seat back 6 in the forward leaning posture by a compact configuration in which the folding mechanisms are collectively arranged on one side of each plate. For this reason, according to this embodiment, the weight of the vehicle seat 2 can be reduced by making the folding mechanism compact. Further, the folding mechanism is simplified by reducing the number of parts, and thus the manufacturing cost can be reduced.
In addition, according to the present embodiment, in a simple configuration in which the first traction member 30 and the second traction member 40 are rotated in conjunction with each other, the traction stroke of the unlocking cable 10 can be reduced by regulating the rotation amount of the second traction member 40. It can be almost constant. Therefore, according to the folding mechanism of the present embodiment, it is possible to prevent or reduce an excessive load on the cable 10.
In this embodiment, even when the seat back 6 is tilted backward (when raised), the protrusion 34 moves along the second groove 44b to restrict the rotation of the second pulling member 40. . For this reason, according to the present embodiment, the seat back 6 can be tilted backward (standing) without applying an excessive load to the lock release cable 10 as much as possible.

The vehicle seat folding mechanism of the present embodiment is not limited to the above-described example, and may take other various embodiments.
(1) In this embodiment, the traction members (30, 40) and the stopper member 50 are disposed on the back side of the base plate 14. These members may be disposed on either the back surface side or the front surface side (one side) of the base plate 14 in accordance with the disposition position of the engagement protrusion 20.
(2) In the present embodiment, the configuration in which the traction member is divided into two parts (configuration that reduces the load on the lock release cable 10) has been described, but the configuration of the traction member is not limited. That is, as long as the slide mechanism or the like is not subjected to an extreme burden, the pulling member may be formed of a single member. For example, it is good also as a structure (simple structure which abbreviate | omits the 2nd traction member 40) which connects the lock release cable 10 to the other end side of the 1st traction member 30.

(3) In the present embodiment, the arcuate engagement protrusion 20, the substantially V-shaped first traction member 30, the rectangular second traction member 40, and the rectangular stopper member 50 are exemplified. It is not intended to limit the shape of each member. That is, each of these members may have any shape as long as it can come into contact with other members or press other members according to their functions.
In the present embodiment, the cylindrical pulling pin 32 and the cylindrical protrusion 34 are provided for the first pulling member 30, and the substantially trapezoidal protrusion 22 is provided for the engaging protrusion 20. It is not intended to limit the shape of each part. That is, each of these portions may have any shape as long as it can be brought into contact with another member or can be pressed against the other member according to each function.

(4) In the present embodiment, the configuration in which the coil spring is used to bias the first pulling member 30 and the spiral spring is used to bias the second pulling member 40 and the stopper member 50 has been described. For urging each of these members, a spring member such as a coil spring or a spiral spring, or another urging member capable of expanding and contracting such as a rubber member can be appropriately selected and used.
(5) In the present embodiment, the configuration in which the first groove portion 44a and the second groove portion 44b are provided for the second pulling member 40 (hole portion 42) has been described. The second pulling member 40 preferably has one of the first groove 44a and the second groove 44b, and more preferably has the first groove 44a. When the seat back 6 is raised, the second groove 44b can be omitted from the hole 42 when the lock release cable 10 is not extremely burdened.

(6) Further, in the present embodiment, when the seat back 6 is in the forward tilted posture (when the second pulling member 40 is in the tilted position), the first groove 44 a is concentric with the first rotating shaft 36. The example which becomes a shape was demonstrated. The first groove 44a may be configured to be concentric with the first rotation shaft 36 when the seatback 6 is in any posture from the standing posture to the forward leaning posture.
(7) Moreover, the vehicle seat of a present Example may be arrange | positioned at the vehicle 1st line, and may be arrange | positioned after the 2nd line. In the present embodiment, a single-seat vehicular seat is exemplified, but the folding mechanism of the present embodiment can also be applied to a vehicular seat for two-seater.

(A) is a side view of the vehicle seat in a standing posture, and (b) is a side view of the vehicle seat in a forward tilt posture. It is a side view of the sheet inner side of each plate in a standing posture. (A) is the IIIa-IIIa line longitudinal cross-sectional view of FIG. 2, (b) is the IIIb-IIIb line cross-sectional view of FIG. It is a side view of the sheet inward side of each plate in the forward leaning posture. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. (A)-(c) is a side view on the sheet inward side of each plate showing a process in which it is greatly tilted from a forward tilting posture and shifted to a posture. (A) And (b) is a side view on the sheet inward side of each plate showing a process of shifting from a greatly tilted posture to a forward inclined posture.

Explanation of symbols

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8a Upper Rail 8b Lower Rail 10 Lock Release Cable 12 Base Plate 13 Locking Piece 14 Arm Plate 15 Through Hole 16 Insertion Hole 18 Bracket 18a First Flange Part 18b Second Flange Part 19 First Lever Member 20 Engaging protrusion 22 Protruding part 30 First pulling member 32 Projecting pin 34 Projecting part 36 First rotating shaft 40 Second pulling member 42 Hole 44a First groove 44b Second groove 44c Inserting groove 45a First crank surface 45b Second crank surface 46 Second rotation shaft 50 Stopper member 52 Contact surface 54 Upper surface 56 Third rotation shaft 59 Second lever member R Reclining shaft

Claims (2)

By tilting the seat back forward relative to the seat cushion, the unlocking cable of the seat slide mechanism can be pulled and moved forward and backward in the vehicle, and the seat back in the forward tilt position is tilted forward with respect to the seat cushion. In the folding mechanism of the vehicle seat that can be directly displaced to the tilted position,
With respect to the base plate fixed to the seat cushion, an arm plate fixed to the seat back is pivotally supported in a tilting direction,
The arm plate is provided with an engaging protrusion that rotates integrally with the arm plate, and is rotated by pressing the engaging protrusion on one side of the base plate that faces the engaging protrusion. A traction member that pulls the traction member, and a stopper member having a contact surface that can contact the traction member;
As the seat back is tilted forward, the pulling member is rotated by the pressing of the engaging protrusion to pull the lock release cable, and the pulling member comes into contact with the contact surface of the stopper member. A seat for a vehicle configured to hold the seat back in the forward leaning posture and to displace the seat back in the forward leaning posture to a posture by releasing the contact between the pulling member and the contact surface. Folding mechanism. The traction member is composed of a first traction member and a second traction member,
The first pulling member is pivotally supported on the base plate so as to rotate in contact with the engagement protrusion on one end side thereof,
The second traction member has a hole into which a protrusion provided on the other end side of the first traction member can be inserted, and rotates in conjunction with the pressing of the protrusion as the first traction member rotates. So that it is pivotally supported by the base plate,
By rotating the first traction member and the second traction member in conjunction with each other by pressing the engagement protrusion, the first traction member is rotated after the lock release cable connected to the second traction member is pulled. When the projection enters the groove of the hole formed concentrically with respect to the shaft, and the projection moves along the groove as the first pulling member rotates, the second pulling is performed. The vehicle seat folding mechanism according to claim 1, wherein the rotation of the member is restricted.

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