CN115520073A - Vehicle seat - Google Patents

Abstract

The present invention provides a new mechanism for moving a vehicle seat. The vehicle seat includes a base portion (lower rail), a 1 st movable portion (lower structure) movable relative to the base portion, a 2 nd movable portion (interlocking lever) movable relative to the 1 st movable portion, a lock member attached to the 1 st movable portion, and a lock releasing portion (lock releasing pin) provided on the base portion. The 2 nd movable part is movable among a 1 st position, a 2 nd position after moving relative to the 1 st position, and a 3 rd position located on the opposite side of the 1 st position relative to the 2 nd position. The lock member 50 is movable between a lock position for locking the 2 nd movable part from the 2 nd position to the 3 rd position and an unlock position for allowing the 2 nd movable part from the 2 nd position to the 3 rd position. The unlocking portion abuts against the locking member when the 1 st movable portion moves to a predetermined position relative to the base portion, and moves the locking member from the locked position to the unlocked position.

Description

Vehicle seat

Technical Field

The present invention relates to a vehicle seat capable of changing a layout in a vehicle.

Background

In the related art, there is known a mechanism in which a slide lock mechanism is unlocked when a seat back is tilted forward, and thereafter a tumble lock mechanism is unlocked when the seat is slidingly moved to the forefront (patent document 1).

[ Prior art documents ]

[ patent document ]

Patent document 1: japanese patent laid-open publication No. 2000-94996

Disclosure of Invention

[ problem to be solved by the invention ]

In addition, the vehicle seat is required to be capable of changing various layouts. For example, if the seat back is locked in a state of being tilted forward to a halfway position and thereafter another operation is performed, for example, if the seat is slid and moved so that the forward tilting of the seat back locked at the halfway position can be unlocked and the seat back can be tilted further forward, the change of the layout changing operation of the vehicle seat can be expanded.

It is therefore an object of the present invention to provide a new mechanism for moving a vehicle seat.

In addition, the object is to miniaturize the vehicle seat.

In addition, the object is to improve the reliability of the operation of the vehicle seat.

Further, it is an object to facilitate visual confirmation of the movement of the vehicle seat.

[ means for solving the problems ]

The present invention for solving the above-described problems is a vehicle seat including a seat cushion and a seat back, and including a base portion, a 1 st movable portion, a 2 nd movable portion, a lock member, and a lock releasing portion, wherein the 1 st movable portion is movable relative to the base portion, the 2 nd movable portion is movable relative to the 1 st movable portion, and is movable between a 1 st position, a 2 nd position, and a 3 rd position, the 2 nd position being a position moved relative to the 1 st position, the 3 rd position being a position located on an opposite side of the 1 st position relative to the 2 nd position, and the lock member is attached to the 1 st movable portion, and is movable between a lock position and an unlock position, wherein the lock member is engaged with the 2 nd movable portion to lock the 2 nd movable portion from the 2 nd position to the 3 rd position, the unlock position is a position at which the lock member is disengaged from the 2 nd movable portion to allow the 2 nd movable portion to move from the 2 nd position to the 3 rd position, the unlock portion is provided at the base portion, and when the 1 st movable portion moves to a predetermined position with respect to the base portion, the unlock portion is brought into contact with the lock member to move the lock member from the lock position to the unlock position.

According to this structure, the 2 nd movable part is held at the 2 nd position by the lock member after being moved from the 1 st position to the 2 nd position with respect to the 1 st movable part. When the 2 nd movable part is located at the 2 nd position, the 1 st movable part is moved to a predetermined position relative to the base part, the lock member reaches the unlock position, and the 2 nd movable part can be moved from the 2 nd position to the 3 rd position.

The base portion may have a lower rail fixed to a floor of the vehicle, and the 1 st movable portion may have an upper rail that is slidably movable with respect to the lower rail and to which the seat cushion is attached.

The lock member may be supported by the 1 st movable portion so as to be rotatable with respect to the 1 st movable portion.

The vehicle seat may further include a backrest angle adjusting device that switches between a state in which the seat back is able to rotate with respect to the seat cushion and a state in which the seat back is unable to rotate with respect to the seat cushion. In this case, the position of the lock member in the left-right direction may overlap with the backrest angle adjusting means.

According to this structure, the vehicle seat can be downsized in the right-left direction.

The 2 nd movable portion may include a bracket which is attached to the 1 st movable portion so as to be rotatable about a rotation axis and has a flat plate portion orthogonal to the rotation axis and an extending portion extending from the flat plate portion in a direction in which the rotation axis extends, and a contact member which is fixed to the bracket in a state of being in contact with the flat plate portion and the extending portion and which is contactable with the lock member.

According to this configuration, since the rigidity of the portion of the 2 nd movable portion that contacts the lock member can be increased, the 2 nd movable portion can be reliably stopped at the 2 nd position.

The vehicle seat may further include a cover that covers the lock member at least from the left and right outer sides.

According to this structure, dust can be suppressed from entering the periphery of the lock member, and the reliability of the operation of the vehicle seat can be improved.

The abutting portion of the lock member abutting the lock release portion and the engaging portion engaged with the 2 nd movable portion may be located outside the upper rail in the left-right direction.

With this configuration, the operation of the lock member can be easily visually confirmed.

Preferably, when the lock member is in the lock position, the contact width in the left-right direction when the lock member is engaged with the 2 nd movable portion is larger than the contact width in the left-right direction when the lock member is in contact with the lock release portion.

With this configuration, the 2 nd movable portion can be reliably stopped at the 2 nd position.

When the lock member is in the lock position, the contact portion of the lock member with the lock release portion may be located below the engagement portion with the 2 nd movable portion.

With this configuration, the mechanism can be suppressed from becoming complicated.

The position of the locking member in the up-down direction may overlap with the 2 nd movable portion.

With this configuration, the vehicle seat can be downsized in the vertical direction.

[ Effect of the invention ]

According to the present invention, the 2 nd movable part is held at the 2 nd position by the lock member after being moved from the 1 st position to the 2 nd position with respect to the 1 st movable part. When the 2 nd movable part is located at the 2 nd position, the 2 nd movable part can be moved from the 2 nd position to the 3 rd position because the lock member reaches the unlock position when the 1 st movable part is moved to the predetermined position with respect to the base part.

Further, the base portion has a lower rail, the 1 st movable portion has an upper rail, and the vehicle seat is slid to a predetermined position by the sliding operation, whereby the movable range of the 2 nd movable portion located at the 2 nd position can be expanded.

In addition, the position of the lock member in the left-right direction overlaps with the backrest angle adjusting means, so the vehicle seat can be downsized in the left-right direction.

Further, since the contact member is fixed to the bracket in a state of being in contact with the flat plate portion and the extended portion of the bracket, the rigidity of the portion of the 2 nd movable portion that is in contact with the lock member can be increased, and therefore the 2 nd movable portion can be reliably stopped at the 2 nd position.

Further, since the cover is provided to cover the lock member at least from the left and right outer sides, dust can be prevented from entering the periphery of the lock member, and the reliability of the operation of the vehicle seat can be improved.

Further, since both the contact portion and the engagement portion of the lock member are located outward of the upper rail in the lateral direction, the operation of the vehicle seat can be easily visually confirmed.

When the lock member is in the locked position, the contact width in the left-right direction when the lock member engages with the 2 nd movable portion is larger than the contact width in the left-right direction when the lock member abuts with the lock release portion, and therefore the 2 nd movable portion can be reliably stopped at the 2 nd position.

When the lock member is in the lock position, the abutting portion where the lock member abuts against the lock release portion is located below the engaging portion that engages with the 2 nd movable portion, and thus the mechanism can be prevented from becoming complicated.

By overlapping the position of the lock member in the up-down direction with the 2 nd movable portion, the vehicle seat can be downsized in the up-down direction.

Drawings

Fig. 1 is a perspective view showing a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the linkage rod, locking member and cover.

Fig. 3 is a perspective view showing the linkage rod and the locking member in an exploded manner.

Fig. 4 is a diagram showing a positional relationship between the lock member and the backrest angle adjusting device and the like.

Fig. 5 is a diagram showing the link mechanism.

Fig. 6 (a) to (d) are views showing states of the respective members when the vehicle seat is in the initial state.

Fig. 7 (a) to (d) are views showing states of the respective members when the seat back is moved from the seating position to the intermediate position.

Fig. 8 (a) to (d) are views showing states of the respective members when the lock member is brought into contact with the lock release pin by sliding the seat body forward.

Fig. 9 (a) to (d) are views showing states of the respective members when the seat body is slid forward from the position of fig. 8 and the lock member is rotated to the unlock position.

Fig. 10 (a) to (d) are views showing states of the respective members when the interlinking lever is moved from the 2 nd position to the 3 rd position.

Fig. 11 (a) to (d) are views showing states of the respective members when the seatback is returned from the storage position to the seating position.

Fig. 12 (a) to (d) are diagrams showing states of the respective members when the vehicle seat according to the modification is in the initial state.

Fig. 13 (a) to (d) are views showing states of the respective members when the seat body is rotated from the seating position to the 1 st forward tilt position.

Fig. 14 (a) to (d) are diagrams showing states of the respective members when the lock member is brought into contact with the lock release pin by sliding the seat body according to the modification forward.

Fig. 15 (a) to (d) are views showing states of the respective members when the seat body is slid forward from the position of fig. 14 and the lock member is rotated to the unlock position.

Fig. 16 (a) to (d) are views showing states of the respective members when the interlinking lever is moved from the 2 nd position to the 3 rd position.

Fig. 17 (a) to (d) are views showing states of the respective members when the seat body is returned from the 2 nd forward tilt position to the seating position.

Fig. 18 is a view showing the latch device, in which (a) is a view showing a state where the latch is located at the engagement position, and (b) is a view showing a state where the latch is located at the disengagement position.

[ description of reference numerals ]

40: a linkage rod; 50: a locking member; s: a vehicle seat; s1: a seat cushion; s2: a seat back; s4: a lower structure; s5: a lower rail; s52: and a lock releasing pin.

Detailed Description

An embodiment of the present invention will be described below with reference to the drawings.

As shown in fig. 1, the vehicle seat S is, for example, a second-row seat of the vehicle. The vehicle seat S includes a seat main body S0, a backrest angle adjusting device R, left and right lower structures S4 as an example of a 1 st movable portion, and left and right lower rails S5 as an example of a base portion. Further, in the present invention, the front-back, left-right, and up-down are based on an occupant sitting on the seat.

The seat main body S0 has a seat cushion S1, a seat back S2, and a headrest S3. The seat back S2 is rotatably supported by the seat cushion S1. Specifically, the seat back S2 is rotatable between an upright seating position (position of fig. 6 (a)) and a storage position (position of fig. 10 (a)) folded so as to overlap with the seat cushion S1.

The backrest angle adjusting device R is a device that can switch the seat backrest S2 between a state in which it is rotatable with respect to the seat cushion S1 and a state in which it is not rotatable with respect to the seat cushion S1. The backrest angle adjusting means R has a backrest angle adjusting spring R1 as a movable spring. The backrest angle adjusting spring R1 biases the seat backrest S2 from the seating position to the retracted position.

The backrest angle adjusting device R has a backrest angle adjustment locking member, not shown, for locking the seat backrest S2 at the seating position. A backrest angle adjustment releasing lever L1 is provided at an upper portion of the backrest S2, and the backrest angle adjustment releasing lever L1 is used to release the locking of the backrest angle adjustment locking member. The back angle adjustment releasing lever may be provided on a side surface of the seat cushion S1, or may be provided on both an upper portion of the seat back S2 and a side surface of the seat cushion S1.

The lower structures S4 are provided on both the left and right sides of the lower surface of the seat cushion S1 so as to protrude from the lower surface of the seat cushion S1. The lower structure S4 includes a base frame S41 connected to the seat cushion S1 and an upper rail S42 fixed to a lower end of the base frame S41. The upper rail S42 is slidably movable in the front-rear direction with respect to the lower rail S5. The seat cushion S1 is mounted to the upper rail S42 via the base frame S41.

The lower rail S5 supports the upper rail S42 such that the upper rail S42 is movable in the front-rear direction. The lower rail S5 is fixed to a floor F (see fig. 6 a) of the vehicle.

The lower structure S4 is provided with a slide lock mechanism 10 and a simple lock mechanism 20. The slide lock mechanism 10 is a mechanism for prohibiting or allowing the seat main body S0 to slide in the front-rear direction. The slide lock mechanisms 10 are provided in the left and right lower structures S4.

As shown in fig. 6 (b), the slide lock mechanism 10 has a slide lock member 11 as a movable lock member. The slide lock member 11 is a member for locking or unlocking the slide movement of the seat main body S0. The slide lock member 11 is rotatably supported by the lower structure S4, and a hook-shaped distal end portion 11A that rotates can engage with a hole S51 formed in the lower rail S5. The slide lock member 11 is rotatable between a movable lock position (a position of (b) in fig. 6) that locks the slide movement of the seat main body S0 and an unlock position (a position of (b) in fig. 7) that unlocks the seat main body S0. The slide lock member 11 is biased from the unlocked position to the movable locked position by a spring, not shown.

Returning to fig. 1, the simple lock mechanism 20 is a mechanism for restricting the movement of the seat back S2 from an intermediate position (a position of fig. 7 (a)) between the seating position and the storage position to the storage position. The simple lock mechanism 20 is provided on the left lower structure S4.

As shown in fig. 6 (a) and 6 (d), the simple lock mechanism 20 includes an interlocking lever 40 as an example of the 2 nd movable portion, and a lock member 50 for locking the operation of the interlocking lever 40. The interlocking lever 40 is a member that rotates in interlocking with the tilting of the seat back S2, and is connected to the seat back S2 via a power transmission member, not shown, such as a link, a gear, and a belt.

The interlocking bar 40 is provided on the right and left outer side surfaces of the lower structure S4 so as to be rotatable, and is rotatable with respect to the lower structure S4. The link 40 is rotatable between a 1 st position P1, a 2 nd position P2 (see (d) in fig. 7) moved relative to the 1 st position P1, and a 3 rd position P3 (see (d) in fig. 10) located on the opposite side of the 1 st position P1 relative to the 2 nd position P2.

In detail, the linkage bar 40 is located at the 1 st position P1 when the seat back S2 is located at the seating position. The linkage bar 40 is in the 2 nd position P2 when the seat back S2 is in the intermediate position. The linkage bar 40 is in the 3 rd position P3 when the seat back S2 is in the stowed position. Therefore, the backrest angle adjusting spring R1 applies force to the linkage rod 40 through the seat backrest S2 to move the linkage rod 40 from the 1 st position P1 to the 3 rd position P3.

The lock member 50 is provided rotatably on the left and right outer side surfaces of the lower structure S4. The locking member 50 is rotatable between a locking position (a position of (d) in fig. 6) where the locking member 50 locks the linkage lever 40 by being engaged with the linkage lever 40 to move from the 2 nd position P2 to the 3 rd position P3, and an unlocking position (a position of (d) in fig. 10) where the locking member 50 allows the linkage lever 40 to move from the 2 nd position P2 to the 3 rd position P3 by being disengaged from the linkage lever 40. The lock member 50 is biased from the unlock position to the lock position by a spring not shown.

The lower rail S5 is provided with a lock release pin S52 as an example of a lock release portion. The lock release pin S52 protrudes from the left and right outer side surfaces of the lower rail S5, and can abut against the lock member 50 in the front-rear direction. The lock release pin S52 has a function of abutting against the lock member 50 and rotating the lock member 50 from the lock position to the unlock position when the lower structure S4 moves to a predetermined position in front with respect to the lower rail S5.

As shown in fig. 2, the vehicle seat S further includes a cover C that covers the lock member 50 at least from the right and left outer sides. In the present embodiment, the cover C is formed to cover the lock member 50 from the front, rear, left, right, upper, and lower outer sides.

As shown in fig. 3, the linkage bar 40 has a bar main body 41, a bracket 42, and a contact member 43. The parts (41-43) constituting the linkage bar 40 are made of, for example, metal.

The lever main body 41 is an elongated plate-like member. The lever main body 41 has a circular hole 41A at a lower end portion, and the hole 41A is rotatably supported by a projection provided on the lower structure S4. The lever main body 41 is attached to the lower structure S4 so as to be rotatable about the rotation axis X1.

The bracket 42 is joined to the lever main body 41 by welding or the like. Accordingly, the bracket 42 is rotatably attached to the lower structure S4 via the lever main body 41, and is rotatable with respect to the lower structure S4 about the rotation axis X1 along the left-right direction.

The bracket 42 has a flat plate portion 42A orthogonal to the pivot axis X1 and an extending portion 42B extending from the flat plate portion 42A in a direction extending along the pivot axis X1. The flat plate portion 42A has a hole 42C concentric with the hole 41A of the lever main body 41.

The extending portion 42B is formed to be bent outward from the flat plate portion 42A. The extending portion 42B is bent in an L shape along a corner portion constituting a part of the peripheral edge of the flat plate portion 42A. In detail, the extension part 42B has a 1 st wall B1 contacting the front end of the contact member 43 and a 2 nd wall B2 contacting the lower end of the contact member 43.

The contact member 43 is a member having a rear end portion 43A contactable with the lock member 50. The contact member 43 is fixed to the bracket 42 by welding or the like in a state of being in contact with the flat plate portion 42A and the extended portion 42B. A recess 43B is formed at the distal end portion of the contact member 43, and the recess 43B is formed to avoid interference with an R-shaped portion (not shown) formed by bending the extension portion 42B from the flat plate portion 42A. Accordingly, the contact member 43 can be reliably brought into contact with the flat plate portion 42A and the extended portion 42B.

The lock member 50 includes a rotating shaft 51, a 1 st plate 52, a 2 nd plate 53, a connecting shaft 54, and an engaging portion 55, wherein the rotating shaft 51 is rotatably supported by the lower structure S4, the 1 st plate 52 and the 2 nd plate 53 are fixed to the rotating shaft 51 by welding or the like, the connecting shaft 54 connects the 1 st plate 52 and the 2 nd plate 53, and the engaging portion 55 is supported by the connecting shaft 54. The members (51 to 55) constituting the lock member 50 are made of, for example, metal.

The rotating shaft 51 has columnar 1 st and 2 nd shaft portions 51A and 51B, and a flange portion 51C, wherein the diameter of the flange portion 51C is larger than the diameters of the 1 st and 2 nd shaft portions 51A and 51B. The 1 st shaft portion 51A protrudes from the flange portion 51C to the left and right inside, and is rotatably supported by the lower structure S4. The 2 nd shaft portion 51B projects laterally outward from the flange portion 51C.

The 1 st plate 52 is a substantially V-shaped flat plate orthogonal to the left-right direction. Specifically, the 1 st plate 52 has a trapezoidal main body portion 52A that is long in the front-rear direction, and an abutting portion 52B that extends downward from a rear side portion of the main body portion 52A. The tip of the contact portion 52B can contact the lock release pin S52.

The body portion 52A is formed in a trapezoidal shape, and a rear portion of an upper surface thereof is a flat surface along the front-rear direction, and a front portion thereof is an inclined surface inclined forward and downward. The body portion 52A has a hole H1 through which the 2 nd shaft portion 51B passes and a hole H2 through which the connecting shaft 54 passes. The hole H1 is formed in a corner portion on the front side of the upper portion of the body portion 52A. The hole H2 is formed in the distal end portion of the body portion 52A. The 1 st plate 52 is fixed to the rotating shaft 51 by welding or the like in a state where the 2 nd shaft portion 51B enters the hole H1 and the 1 st plate 52 is in contact with the flange portion 51C.

The connecting shaft 54 has a shaft portion 54A and a flange portion 54B having a larger diameter than the shaft portion 54A. The shaft portion 54A protrudes laterally outward from the flange portion 54B. The connecting shaft 54 is fixed to the 1 st plate 52 by welding or the like in a state where the shaft portion 54A enters the hole H2 of the 1 st plate 52 and the flange portion 54B is in contact with the 1 st plate 52.

The engaging portion 55 is a cylindrical member that engages with the contact member 43 of the interlinking lever 40. The engaging portion 55 is supported by the shaft portion 54A of the connecting shaft 54.

The 2 nd plate 53 has a 1 st portion 53A and a 2 nd portion 53B, wherein the 1 st portion 53A and the 1 st plate 52 sandwich the engaging portion 55; the 2 nd portion 53B extends from the 1 st portion 53A toward the 1 st plate 52. The 1 st portion 53A has a hole H3 and a hole H4, the hole H3 engaging with a boss provided at the tip of the 2 nd shaft portion 51B, the hole H4 engaging with a boss provided at the tip of the shaft portion 54A, and the 1 st portion 53A is joined to the shaft portions 51B and 54A by welding or the like in a state where the bosses engage with the holes H3 and H4.

The rear end portion 43A of the contact member 43 has a width in the left-right direction larger than a width (plate thickness) in the left-right direction of the contact portion 52B. The engagement portion 55 has a length in the left-right direction larger than a width in the left-right direction of the rear end portion 43A of the contact member 43. Accordingly, as shown in fig. 4, when the lock member 50 is located at the lock position, the contact width WD1 in the left-right direction when engaged with the interlinking lever 40 is larger than the contact width WD2 in the left-right direction when the lock member 50 abuts against the lock release pin S52.

In addition, the position of the lock member 50 in the left-right direction overlaps with the backrest angle adjusting means R. Both the contact portion 52B and the engagement portion 55 of the lock member 50 are located outward of the upper rail S42 in the left-right direction.

In addition, as shown in (d) of fig. 6, the locking member 50 overlaps the linkage bar 40 at a position in the up-down direction. When the lock member 50 is in the lock position, the contact portion 52B is located below the engagement portion 55.

As shown in fig. 1, an interlocking mechanism 30 for interlocking the slide lock mechanism 10 with the operation of the seatback S2 is provided below the seat cushion S1. The link mechanism 30 is configured to change the slide lock mechanism 10 from the locked state to the unlocked state when the seatback S2 is rotated from the seating position to the intermediate position, and to change the slide lock mechanism 10 from the unlocked state to the locked state when the seatback S2 is rotated from the intermediate position to the storage position.

The interlocking mechanism 30 includes a 1 st wire W1 as an example of a 1 st connecting member, a 2 nd wire W2 as an example of a 2 nd connecting member, a 3 rd wire W3 as an example of a 3 rd connecting member, and a 4 th wire W4. The components in the linkage mechanism 30 and the linkage rod 40 of the simple locking mechanism 20 are connected by the 1 st wire W1 and the 3 rd wire W3. Accordingly, the force generated by the rotation of the seatback S2 can be transmitted to the link mechanism 30.

The right and left slide lock mechanisms 10 are connected to the components in the interlocking mechanism 30 via the 2 nd wire W2, respectively. Accordingly, the force transmitted from the seatback S2 to the link mechanism 30 can be transmitted to the left and right slide lock mechanisms 10.

A slide lock releasing lever L2 for releasing the lock of the slide lock mechanism 10 is provided at a front end portion of the seat cushion S1. The slide lock release lever L2 is connected to a member in the link mechanism 30 via the 4 th wire W4. Accordingly, the force applied to the slide lock release lever L2 can be transmitted to the left and right slide lock mechanisms 10.

As shown in fig. 5, the link mechanism 30 includes a mounting member 31, a 1 st pivoting member 32, a 2 nd pivoting member 33, a pivoting member 34, a holding member 35, a 1 st spring 36, a 2 nd spring 37, a spring 38 for pivoting, and a spring 39 for restricting. The members (31 to 39) constituting the link mechanism 30 are made of, for example, metal.

The mounting member 31 is a member mounted to the lower structure S4. The mounting member 31 is formed in a box shape in which a peripheral edge portion of a metal plate is bent.

The 1 st rotating member 32 and the 2 nd rotating member 33 are provided to be rotatably provided to the mounting member 31 so as to rotate about a common rotation axis X2. Specifically, the 1 st rotating member 32 and the 2 nd rotating member 33 are rotatably supported by a columnar boss 31A provided in the mounting member 31.

The 1 st rotating member 32 has a wire connecting portion 32A for connecting one end of the 1 st wire W1. The other end of the 1 st wire W1 is connected to the interlocking bar 40 (see fig. 6 (d)). Accordingly, in conjunction with the rotation of the linkage lever 40, the 1 st rotating member 32 can rotate between the 1 st rotating position (position of (c) in fig. 6) corresponding to the 1 st position P1, the 2 nd rotating position (position of (c) in fig. 7) corresponding to the 2 nd position P2, and the 3 rd rotating position (position of (c) in fig. 10) corresponding to the 3 rd position P3. In the following description, the rotation direction of the 1 st rotating member 32 rotated by being pulled by the 1 st wire W1, i.e., the clockwise rotation direction, will also be referred to as the 1 st rotation direction, and the opposite direction to the 1 st rotation direction will also be referred to as the 2 nd rotation direction.

The 1 st rotating member 32 further includes an engagement edge 32B that engages with the swinging member 34, and a regulation edge 32C that regulates the rotation of the holding member 35. The engaging edge 32B and the restricting edge 32C are formed as a part of the periphery of the 1 st pivoting member 32.

The engagement edge portion 32B is located on the upstream side in the 1 st rotation direction with respect to a swing engagement portion 34A of the swing member 34, which will be described later. The engagement edge portion 32B is configured to engage with the swing engagement portion 34A when the 1 st rotating member 32 is located within the range from the 1 st rotating position to the 2 nd rotating position, and the engagement edge portion 32B is configured to disengage from the swing engagement portion 34A in the process of the 1 st rotating member 32 moving from the 2 nd rotating position to the 3 rd rotating position. Accordingly, the swing member 34 is configured such that the swing member 34 engages with the engagement edge 32B of the 1 st rotating member 32 when the interlinking lever 40 is located within the range from the 1 st position P1 to the 2 nd position P2, and the swing member 34 is disengaged from the engagement edge 32B of the 1 st rotating member 32 while the interlinking lever 40 moves from the 2 nd position P2 to the 3 rd position P3.

The restricting edge portion 32C is formed in an arc shape with the rotation axis X2 as the center. The restricting edge portion 32C is configured to come into contact with a pin 35A, described later, of the holding member 35 until the 1 st pivoting member 32 reaches the 2 nd pivoting position from the 1 st pivoting position, and to be separated from the pin 35A when the 1 st pivoting member 32 reaches the 2 nd pivoting position.

The 1 st rotating member 32 is biased in the 2 nd rotating direction by the 1 st spring 36. That is, the 1 st spring 36 biases the 1 st rotating member 32 in the direction opposite to the direction in which the 1 st wire W1 is received. The mounting member 31 has a restricting wall 31B, and the restricting wall 31B restricts the 1 st rotating member 32 from moving from the 1 st rotating position to the 2 nd rotating direction.

The 2 nd rotating member 33 has a wire connecting portion 33A that connects one end of each of the 2 nd wires W2 and one end of the 4 th wire W4. The other end of each 2 nd wire rod W2 is connected to the left and right slide lock members 11 (see fig. 6 (b)). The other end of the 4 th wire W4 is connected to the slide lock release lever L2 (see fig. 1).

The 2 nd rotating member 33 further has a restricting edge portion 33B that restricts rotation of the holding member 35 and a contact edge portion 33C that can contact the holding member 35 in the rotation direction of the 2 nd rotating member 33. The restricting edge portion 33B and the contact edge portion 33C are formed as a part of the periphery of the 2 nd rotating member 33.

The restricting edge portion 33B is formed in an arc shape centered on the rotation axis X2, and overlaps the restricting edge portion 32C of the 1 st rotating member 32 when projected in a direction along the rotation axis X2. Like the restricting edge portion 32C of the 1 st pivoting member 32, the restricting edge portion 33B can come into contact with the pin 35A of the holding member 35 or come out of contact with the pin 35A of the holding member 35.

The contact edge portion 33C extends from the downstream end of the restricting edge portion 33B in the 2 nd rotation direction toward the rotation axis X2. The contact edge portion 33C contacts the pin 35A when the holding member 35 is located at a restricting position (position of fig. 7 (C)).

The 2 nd rotating member 33 further has an arc-shaped hole 33D centered on the rotation axis X2. The mounting member 31 has a restricting projection 31C that enters the hole 33D. The restricting projection 31C contacts one end of the hole 33D on the 1 st rotation direction upstream side when the 2 nd rotating member 33 is located at the position shown in fig. 7 (position corresponding to the 2 nd rotating position), thereby restricting the 2 nd rotating member 33 from moving from the position shown in fig. 7 to the 1 st rotation direction. The mounting member 31 further includes a restricting piece 31D, and the restricting piece 31D restricts the movement of the 2 nd rotating member 33 from the position shown in fig. 5 (position corresponding to the 1 st rotating position) in the 2 nd rotating direction.

The 2 nd rotating member 33 is biased in the 2 nd rotating direction by a 2 nd spring 37. That is, the 2 nd spring 37 biases the 2 nd rotating member 33 in the direction in which the 1 st rotating member 32 rotates by the biasing force of the 1 st spring 36.

The swing member 34 is provided on the 2 nd rotating member 33 so as to be swingable about the swing axis X3. The swing member 34 has a swing engagement portion 34A that engages with the engagement edge portion 32B of the 1 st pivot member 32. The swing engagement portion 34A has a cylindrical surface in contact with the engagement edge portion 32B, and is located upstream in the 1 st rotation direction with respect to the swing axis X3. The swing engagement portion 34A can move in the radial direction of the boss 31A by the swing of the swing member 34. The swinging member 34 is biased in the direction of the rotation axis X2 toward the swinging engagement portion 34A by the swinging spring 38.

By configuring the 1 st pivoting member 32, the 2 nd pivoting member 33, and the swinging member 34 as described above, the state in which both the 1 st pivoting member 32 and the 2 nd pivoting member 33 pivot in the 1 st pivoting direction and the state in which each of the 1 st pivoting member 32 and the 2 nd pivoting member 33 pivots independently are switched, and the slide lock member 11 can move to the movable lock position again after moving from the movable lock position to the lock release position.

Specifically, as shown in fig. 6 to 7, when the interlinking lever 40 moves from the 1 st position P1 to the 2 nd position P2, both the 1 st pivoting member 32 and the 2 nd pivoting member 33 are pivoted by the engagement of the swinging member 34 and the 1 st pivoting member 32, and the slide lock member 11 moves from the movable lock position to the unlock position. As shown in fig. 9 to 10, when the interlocking lever 40 moves from the 2 nd position P2 to the 3 rd position P3, the swinging member 34 is disengaged from the 1 st rotating member 32, so that the 1 st rotating member 32 and the 2 nd rotating member 33 can be individually rotated, respectively, and the slide lock member 11 moves from the lock release position to the movable lock position.

In addition, the backrest angle adjusting spring R1 applies a larger torque to the 1 st rotating member 32 than the 1 st springs 36 and the 2 nd springs 37 apply to the 1 st rotating member 32 through the linkage rod 40 and the like. Accordingly, the 1 st wire W1 pulled by the biasing force of the backrest angle adjusting spring R1 can rotate the unit including the 1 st pivoting member 32, the 2 nd pivoting member 33, and the swinging member 34 against the biasing force of the 1 st spring 36 and the 2 nd spring 37.

The holding member 35 is a member for restricting the 2 nd rotation of the 2 nd rotation member 33 in the 2 nd rotation direction and holding the slide lock member 11 at the unlock position when the 1 st rotation member 32 is at the 2 nd rotation position, that is, when the interlinking lever 40 is at the 2 nd position P2. The holding member 35 is provided on the mounting member 31 so as to be rotatable about the holding axis X4.

The holding member 35 has a pin 35A engageable with the regulating edge portions 32C, 33B and the contact edge portion 33C. The pin 35A can move in the radial direction of the boss 31A by the rotation of the holding member 35.

The holding member 35 is rotatable between a permission position (position of fig. 5) for permitting the 2 nd rotating member 33 to rotate in the 2 nd rotating direction and a restriction position (position of (c) of fig. 7) for restricting the 2 nd rotating member 33 from rotating in the 2 nd rotating direction. The holding member 35 is biased from the allowable position to the restricting position by a restricting spring 39.

The holding member 35 is located at the allowing position when the 1 st rotating member 32 is located at the 1 st rotating position, that is, when the linkage bar 40 is located at the 1 st position P1. When the holding member 35 is located at the allowing position, the pin 35A contacts the restricting edge portions 32C, 33B. Accordingly, the movement of the holding member 35 from the allowable position to the restricting position by the biasing force of the restricting spring 39 can be restricted by the restricting edge portions 32C and 33B.

When the 1 st rotating member 32 moves from the 1 st rotating position to the 2 nd rotating position, that is, the interlinking lever 40 moves from the 1 st position P1 to the 2 nd position P2, the pin 35A is disengaged from the restricting edge portions 32C, 33B, whereby the holding member 35 rotates from the allowing position to the restricting position. When the holding member 35 is located at the restricting position, the pin 35A contacts the contact edge portion 33C. Accordingly, the 2 nd pivoting member 33 can be restricted from moving in the 2 nd pivoting direction by the biasing force of the 2 nd spring 37 by the pin 35A.

The holding member 35 further has a wire connecting portion 35B for connecting one end of the 3 rd wire W3. The other end of the 3 rd wire W3 is connected to the interlocking bar 40 (see fig. 6 (d)). Accordingly, the holding member 35 rotates against the biasing force of the restricting spring 39 in conjunction with the rotation of the link lever 40.

The 3 rd wire W3 is connected to the holding member 35 and the interlocking rod 40 by a larger amount than the 1 st wire W1 (see fig. 6 (d)). Accordingly, in the case where the linkage bar 40 starts to move from the 1 st position P1 to the 3 rd position P3, the 1 st rotating member 32 connected to the linkage bar 40 through the 1 st wire W1 starts to rotate immediately, but the holding member 35 connected to the linkage bar 40 through the 3 rd wire W3 does not rotate for a while, and starts to rotate during the movement of the linkage bar 40 from the 2 nd position P2 to the 3 rd position P3.

That is, the 1 st wire W1 causes the 1 st rotating member 32 to be interlocked with the interlocking lever 40 both when the interlocking lever 40 moves from the 1 st position P1 to the 2 nd position P2 and when the interlocking lever 40 moves from the 2 nd position P2 to the 3 rd position P3. On the other hand, the 3 rd wire W3 does not cause the holding member 35 to be interlocked with the interlocking lever 40 when the interlocking lever 40 moves from the 1 st position P1 to the 2 nd position P2, and causes the holding member 35 to be interlocked with the interlocking lever 40 when the interlocking lever 40 moves from the 2 nd position P2 to the 3 rd position P3.

Next, a description will be given of an operation method of the vehicle seat S and operations of the respective members in a case where the vehicle seat S is moved forward in a folded state to expand a vehicle compartment space and in a case where the vehicle seat S moved forward is returned to an initial state. In the initial state, the vehicle seat S and the components are in the postures and positions shown in fig. 6 (a).

When the occupant operates the backrest angle adjustment release lever L1 and releases the lock of the backrest angle adjusting device R as shown in fig. 1, the seat back S2 is rotated from the seating position to the intermediate position by the biasing force of the backrest angle adjusting spring R1 as shown in fig. 6 and 7, and the interlocking lever 40 is rotated from the 1 st position P1 to the 2 nd position P2 in conjunction therewith. When the 1 st wire W1 is pulled due to the rotation of the linkage rod 40, the 1 st rotating member 32 rotates in the 1 st rotating direction together with the 2 nd rotating member 33.

When the 2 nd rotating member 33 rotates in the 1 st rotating direction, the 2 nd wire W2 is pulled by the 2 nd rotating member 33, and the slide lock member 11 moves from the movable lock position to the unlock position. When the linkage rod 40 reaches the 2 nd position P2, the linkage rod 40 is engaged with the locking member 50, limiting the rotation of the linkage rod 40. Accordingly, the link lever 40 is held at the 2 nd position P2, and further the seat back S2 is held at the intermediate position, and the 1 st turning member 32 and the 2 nd turning member 33 are held at the positions in (c) in fig. 7. Therefore, the slide lock member 11 pulled by the 2 nd wire W2 connected to the 2 nd rotating member 33 is held at the unlock position.

When the interlinking lever 40 reaches the 2 nd position P2, the holding member 35 is disengaged from the restricting edge portions 32C and 33B shown in fig. 5, and is rotated from the allowing position to the restricting position. Accordingly, the 2 nd rotating member 33 receives the forces of the 2 nd spring 37, the spring for biasing the slide lock member 11, and the like, and is restricted from rotating in the 2 nd rotating direction by the holding member 35.

Thereafter, when the seat body S0 is slid forward as shown in fig. 8, the lock member 50 abuts on the lock release pin S52 at the predetermined position, and is rotated from the lock position to the unlock position as shown in fig. 9. Accordingly, the locking of the linkage 40 is released.

When the locking of the linkage 40 is released, the seat back S2 is rotated from the intermediate position to the storage position, and the linkage 40 is rotated from the 2 nd position P2 to the 3 rd position P3, as shown in fig. 10, by the urging force of the back angle adjusting spring R1.

When the linkage rod 40 rotates from the 2 nd position P2 to the 3 rd position P3, the linkage rod 40 pulls the 1 st wire W1 and the 3 rd wire W3. By pulling the 1 st wire W1, the 1 st rotating member 32 rotates in the 1 st rotating direction and moves from the 2 nd rotating position to the 3 rd rotating position. By pulling the 3 rd wire W3, the holding member 35 is rotated from the restricting position to the allowing position. Accordingly, the 2 nd rotating member 33 can rotate in the 2 nd rotating direction.

When the swing member 34 is disengaged from the engagement edge portion 32B of the 1 st pivoting member 32 in the process of pivoting the 1 st pivoting member 32 from the 2 nd pivoting position to the 3 rd pivoting position, the 2 nd pivoting member 33 is returned to the initial position by the biasing force of the 2 nd spring 37 (see fig. 5). Accordingly, the 2 nd wire W2 is loosened, and the slide lock member 11 is moved from the unlocked position to the locked position again. As described above, the vehicle seat S can be moved forward in the folded state, and the vehicle compartment space can be enlarged.

When returning the vehicle seat S that is close to the front to the initial state, the occupant stands up the seat back S2 that is tilted forward and returns to the seating position, as shown in fig. 11. When the seat back S2 is moved to the seating position, the seat back S2 is locked at the seating position by the back angle adjustment locking member of the back angle adjustment device R.

When the seat back S2 rotates from the stowed position to the seating position, the interlinking lever 40 rotates from the 3 rd position P3 to the 1 st position P1 in conjunction with this. Accordingly, the 1 st wire W1 is loosened, and the 1 st rotating member 32 rotates from the 3 rd rotating position to the 1 st rotating position. When the 1 st pivoting member 32 returns to the 1 st pivoting position, the pivoting member 34 pivots about the pivot axis X2 by the biasing force of the pivoting spring 38, and is engaged with the engagement edge portion 32B (see fig. 5) of the 1 st pivoting member 32 again.

When the interlocking lever 40 is rotated from the 3 rd position P3 to the 1 st position P1 to loosen the 3 rd wire W3, the holding member 35 is pressed against the regulating edge portions 32C and 33B of the 1 st and 2 nd rotating members 32 and 33 by the biasing force of the regulating spring 39. Accordingly, the link mechanism 30 returns to the initial state.

After that, the occupant operates the slide lock release lever L2 shown in fig. 1 to release the lock of the slide lock member 11, and slides the seat body S0 rearward, thereby returning the vehicle seat S to the initial state. When the occupant operates the slide lock release lever L2, the 4 th wire W4 rotates the 2 nd rotating member 33 in the 1 st rotating direction, and the 2 nd rotating member 33 pulls the 2 nd wire W2, thereby releasing the lock of the slide lock member 11.

As described above, the present embodiment can obtain the following effects.

It is possible to provide a new mechanism for interlocking the slide lock member 11 for locking the slide movement of the seat cushion S1 (lower structure S4) with the seat back S2 (interlocking lever 40) that moves relative to the seat cushion S1.

By configuring the 1 st pivoting member 32 and the 2 nd pivoting member 33 to pivot about the common pivot axis X2, the link mechanism 30 can be made smaller and the vehicle seat S can be made smaller, for example, as compared with a configuration in which the pivot axis of the 1 st pivoting member and the pivot axis of the 2 nd pivoting member are disposed at different positions.

The holding member 35 restricts the rotation of the 2 nd rotating member 33, whereby the slide lock member 11 can be more reliably held at the unlock position.

When the linkage bar 40 moves from the 1 st position to the 2 nd position, since the linkage bar 40 is held at the 2 nd position by the locking member 50, the seat back S2 can be held at the intermediate position. When the interlocking lever 40 is in the 2 nd position, when the seat cushion S1 is moved to a predetermined position with respect to the lower rail S5, the lock member 50 reaches the unlock position, and the interlocking lever 40 moves from the 2 nd position to the 3 rd position, so that the seat cushion S1 can be moved from the intermediate position to the storage position.

By sliding the seat body S0 to the predetermined position by the sliding operation, the movable range of the interlinking lever 40 located at the 2 nd position can be expanded.

Since the position of the lock member 50 in the left-right direction and the backrest angle adjusting means R overlap, the vehicle seat S can be miniaturized in the left-right direction.

Since the contact member 43 is fixed to the bracket 42 in a state of being in contact with the flat plate portion 42A and the extended portion 42B, the rigidity of the portion of the interlocking lever 40 that is in contact with the lock member 50 can be increased, and therefore, a feeling of rigidity in the operation of the vehicle seat S can be generated.

Since the cover C covers the lock member 50, dust can be prevented from entering the periphery of the lock member 50, and the reliability of the operation of the vehicle seat S can be improved.

Since the contact portion 52B and the engagement portion 55 of the lock member 50 are positioned on the left and right outer sides of the upper rail S42, the operation of the lock member 50 can be easily visually confirmed.

Since the contact width WD1 of the lock member 50 when engaged with the interlocking lever 40 when the lock member 50 is located at the lock position is larger than the contact width WD2 when the lock member 50 is in contact with the unlocking pin S52, the feeling of rigidity of the operation when the interlocking lever 40 moves from the 1 st position to the 2 nd position can be improved.

When the lock member 50 is in the lock position, the abutting portion 52B is located below the engaging portion 55, and therefore the mechanism can be prevented from becoming complicated.

Since the position of the locking member 50 in the up-down direction overlaps with the interlocking lever 40, the vehicle seat S can be downsized in the up-down direction.

The present invention is not limited to the above embodiments, and can be used in various forms exemplified below.

In the above embodiment, 1 lock member 50 has the abutting portion 52B and the engaging portion 55, but the present invention is not limited to this, and for example, a mechanism in which the 1 st member having the abutting portion and the 2 nd member having the engaging portion are interlocked by a link mechanism or the like may be used as the lock member.

The 1 st movable part is not limited to sliding movement relative to the base part, and the 1 st movable part may also rotate relative to the base part. For example, the seat body as the 1 st movable portion may be configured to rotate about the vertical axis with respect to the lower rail as the base portion.

The 2 nd movable part is not limited to the case of rotating relative to the 1 st movable part, and the 2 nd movable part may slide relative to the 1 st movable part.

The base portion is not limited to the lower rail, and may be another member fixed to the lower rail, for example. The base portion is not limited to being fixed to the floor of the vehicle. The base portion may be a seat cushion, the 1 st movable portion may be a seat back, and the 2 nd movable portion may be a member that rotates relative to the seat back, such as an armrest.

In the above embodiment, the backrest angle adjustment locking member is exemplified as the 2 nd locking member capable of locking the 2 nd movable part at the 1 st position, but the present invention is not limited to this, and any member may be used as long as it is capable of locking the 2 nd movable part at the 1 st position.

In the above embodiment, the holding member for holding the 2 nd rotating member at the position corresponding to the 2 nd rotating position is provided, but when the 1 st rotating member is located at the 2 nd rotating position, the holding member may not be provided in a case where the engagement between the swinging member and the 1 st rotating member is held.

The connecting member is not limited to a wire, and may be a rod, for example.

In the above embodiment, the interlocking lever 40 is interlocked with the tilting of the seat back S2, but the present invention is not limited to this, and for example, as shown in fig. 12 to 16, when the entire seat main body S0 tilts, the interlocking lever 40 may be interlocked with the tilting of the seat main body S0.

Specifically, in the embodiment shown in fig. 12, the seat cushion S1 is supported by the lower structure S4 so as to be rotatable about a rotation axis X5 extending in the left-right direction. The seat body S0 is rotatable between a seating position shown in fig. 12, a 1 st forward tilted position shown in fig. 13, and a 2 nd forward tilted position shown in fig. 16. In the seating position, the seating surface of the seat cushion S1 is substantially horizontal. The 1 st forward-inclined position is a position in which the seat cushion S1 is inclined forward than the seating position. The 2 nd forward-inclined position is a position at which the seat cushion S1 is inclined forward more than the 1 st forward-inclined position. The seat body S0 is biased from the seating position to the 2 nd forward tilted position by a spring not shown.

The seat cushion S1 has a latch (latch) device 60 for locking the seat main body S0 at the seating position. The latch device 60 locks the seat body S0 to the lower structure S4 or unlocks the seat body S0 from the lower structure S4 by engaging with the latch 70 provided to the lower structure S4 or disengaging from the latch 70 provided to the lower structure S4. The latches 70 may be rod-shaped members that connect the left and right frames of the lower structure S4, for example.

As shown in fig. 18, the latch device 60 includes a case 61 fixed to the seat cushion S1 and a latch 62 rotatably supported by the case 61. The case 61 has an entrance groove 61A into which the latch 70 can enter. The latch 62 is rotatable between an engagement position shown in fig. 18 (a) and a disengagement position shown in fig. 18 (b).

When the latch 62 is in the engaged position, the latch 62 engages the latch 70. When the latch 62 is in the disengaged position, the latch 62 disengages the latch 70. The latch 62 is biased from the disengaged position to the engaged position by a spring not shown.

Returning to fig. 12, a latch release lever L11 is provided at an upper portion of the seat back S2, and the latch release lever L11 is used to release the latch 62. The latch release lever L11 and the latch 62 are connected by a wire W11.

The interlinking lever 40 according to the present embodiment is configured to be interlocked with the rotation of the seat main body S0. Specifically, the interlocking lever 40 is connected to the seat body S0 through a power transmission member, not shown, such as a link, a gear, or a belt.

The link lever 40 is located at the 1 st position P1 when the seat main body S0 is located at the seating position. The link lever 40 is located at the 2 nd position P2 (see fig. 13) when the seat main body S0 is located at the 1 st forward tilt position. The link lever 40 is located at the 3 rd position P3 (see fig. 16) when the seat main body S0 is located at the 2 nd forward tilt position.

Next, a description will be given of an operation method of the vehicle seat S and operations of the respective members in a case where the vehicle cabin space is enlarged by moving the seat body S0 tilted forward to the 2 nd forward tilt position forward and a case where the seat body S0 moved forward is returned to the initial state. In the initial state, the posture and position of the seat body S0 and the respective members are the posture and position shown in fig. 12 (a).

As shown in fig. 12 (a) and 13 (a), when the occupant operates the latch release lever L11 to release the latch of the latch device 60, the seat body S0 is rotated from the seating position to the 1 st forward tilt position by the biasing force of a spring not shown, and the interlocking lever 40 is rotated from the 1 st position P1 to the 2 nd position P2 in conjunction with this. When the 1 st wire W1 is stretched by the rotation of the interlocking lever 40, the 1 st rotating member 32 rotates in the 1 st rotating direction together with the 2 nd rotating member 33.

When the 2 nd rotating member 33 rotates in the 1 st rotating direction, the 2 nd wire W2 is pulled by the 2 nd rotating member 33, and the slide lock member 11 moves from the movable lock position to the release position. When the linkage rod 40 reaches the 2 nd position P2, the linkage rod 40 is engaged with the locking member 50, and the rotation of the linkage rod 40 is limited. Accordingly, the link lever 40 is held at the 2 nd position P2, and further the seat main body S0 is held at the 1 st forward tilt position, and the 1 st turning member 32 and the 2 nd turning member 33 are held at the position of (c) in fig. 13. Therefore, the slide lock member 11 pulled by the 2 nd wire W2 connected to the 2 nd rotating member 33 is held at the release position.

In addition, when the link lever 40 reaches the 2 nd position P2, the holding member 35 rotates from the allowing position to the restricting position. Accordingly, the 2 nd rotating member 33 is restricted from rotating in the 2 nd rotating direction by the holding member 35.

Thereafter, when the seat body S0 is slid forward as shown in fig. 14, the lock member 50 comes into contact with the lock release pin S52 at the predetermined position, and is rotated from the lock position to the unlock position as shown in fig. 15. Accordingly, the locking of the linkage 40 is released.

When the locking of the interlocking lever 40 is released, as shown in fig. 16, the seat main body S0 is rotated from the 1 st forward inclined position to the 2 nd forward inclined position by the biasing force of a spring not shown, and the interlocking lever 40 is rotated from the 2 nd position P2 to the 3 rd position P3.

When the linkage rod 40 rotates from the 2 nd position P2 to the 3 rd position P3, the linkage rod 40 pulls the 1 st wire W1 and the 3 rd wire W3. By pulling the 1 st wire rod W1, the 1 st rotating member 32 rotates in the 1 st rotating direction and moves from the 2 nd rotating position to the 3 rd rotating position. By pulling the 3 rd wire W3, the holding member 35 is rotated from the restriction position to the permission position. Accordingly, the 2 nd rotating member 33 can rotate in the 2 nd rotating direction.

When the swing member 34 is disengaged from the engagement edge portion 32B of the 1 st pivoting member 32 in the process of pivoting the 1 st pivoting member 32 from the 2 nd pivoting position to the 3 rd pivoting position, the 2 nd pivoting member 33 is returned to the initial position by the biasing force of the 2 nd spring 37 (see fig. 5). Accordingly, the 2 nd wire W2 is loosened, and the slide lock member 11 is moved from the release position to the lock position again. Accordingly, the vehicle interior space can be enlarged by moving the seat body S0 tilted forward to the 2 nd forward tilt position forward.

When returning the seat body S0 that is located forward to the initial state, the occupant turns the seat body S0 in the 2 nd forward tilt position to return to the seating position, as shown in fig. 17. When the seat body S0 is moved to the seating position, the latch device 60 engages with the latch 70, and the seat body S0 is thereby locked at the seating position.

When the seat body S0 rotates from the 2 nd forward tilt position to the seating position, the interlocking lever 40 rotates from the 3 rd position P3 to the 1 st position P1 in conjunction with this. Accordingly, the 1 st wire W1 is loosened, and the 1 st rotating member 32 rotates from the 3 rd rotating position to the 1 st rotating position. When the 1 st pivoting member 32 is returned to the 1 st pivoting position, the pivoting member 34 pivots toward the pivoting axis X2 by the biasing force of the pivoting spring 38, and is engaged with the engagement edge portion 32B of the 1 st pivoting member 32 again (see fig. 5).

When the 3 rd wire W3 is loosened by the link lever 40 rotating from the 3 rd position P3 to the 1 st position P1, the holding member 35 is pressed against the regulating edge portions 32C and 33B of the 1 st and 2 nd rotating members 32 and 33 by the biasing force of the regulating spring 39 (see fig. 5). Accordingly, the link mechanism 30 returns to the initial state.

After that, the occupant can operate the slide lock release lever L2 shown in fig. 1 to release the lock of the slide lock member 11, and slide the seat body S0 rearward to return the vehicle seat S to the initial state.

The respective components described in the above-described embodiments and modifications can be arbitrarily combined and implemented.

Claims (10)

1. A vehicle seat having a seat cushion and a seat back, characterized in that,

having a base part, a 1 st movable part, a 2 nd movable part, a locking member and a lock releasing part,

the 1 st movable part is movable relative to the base part,

the 2 nd movable part is movable relative to the 1 st movable part and movable between a 1 st position, a 2 nd position, and a 3 rd position, wherein the 2 nd position is a position after being moved relative to the 1 st position, and the 3 rd position is a position located on an opposite side of the 1 st position relative to the 2 nd position,

the lock member is attached to the 1 st movable portion and is movable between a lock position and an unlock position, the lock member being engaged with the 2 nd movable portion to lock the 2 nd movable portion from the 2 nd position to the 3 rd position, and the unlock position being disengaged from the 2 nd movable portion to allow the 2 nd movable portion to move from the 2 nd position to the 3 rd position,

the unlocking portion is provided in the base portion, and when the 1 st movable portion moves to a predetermined position with respect to the base portion, the unlocking portion comes into contact with the lock member to move the lock member from the lock position to the unlock position.

2. The vehicle seat according to claim 1,

the base portion has a lower rail fixed to a floor of the vehicle,

the 1 st movable portion has an upper rail that is slidably movable with respect to the lower rail and that mounts the seat cushion.

3. The vehicle seat according to claim 2,

the lock member is supported by the 1 st movable portion so as to be rotatable with respect to the 1 st movable portion.

4. The vehicle seat according to claim 2,

further comprising a backrest angle adjusting device that switches between a state in which the seat back is able to rotate with respect to the seat cushion and a state in which the seat back is unable to rotate with respect to the seat cushion,

the position of the lock member in the left-right direction overlaps with the backrest angle adjusting means.

5. The vehicle seat according to claim 2,

the 2 nd movable part has a bracket and a contact member,

the bracket is attached to the 1 st movable portion so as to be rotatable about a rotation axis, and has a flat plate portion orthogonal to the rotation axis and an extending portion extending from the flat plate portion in a direction in which the rotation axis extends,

the contact member is fixed to the bracket in a state of being in contact with the flat plate portion and the extended portion, and is capable of being in contact with the lock member.

6. The vehicle seat according to claim 2,

a cover is provided to cover the lock member at least from the right and left outer sides.

7. The vehicle seat according to claim 2,

the abutting portion of the lock member abutting against the lock release portion and the engaging portion engaged with the 2 nd movable portion are both located on the outer side of the upper rail in the left-right direction.

8. The vehicle seat according to claim 2,

a contact width in the left-right direction when the lock member is engaged with the 2 nd movable portion when the lock member is located at the lock position is larger than a contact width in the left-right direction when the lock member is in contact with the lock release portion.

9. The vehicle seat according to claim 2,

when the lock member is located at the lock position, an abutting portion at which the lock member abuts against the lock release portion is located below an engaging portion that engages with the 2 nd movable portion.

10. The vehicle seat according to any one of claims 2 to 9,

the lock member overlaps the 2 nd movable portion in a vertical position.

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