JP5864385B2 - Retractable vehicle seat - Google Patents

Description

  The present invention relates to a retractable vehicle seat in which a seat back is folded on a seat cushion, and further, the seat cushion is rotated about a vehicle side wall side of the seat cushion as a hinge center and can be stored along the vehicle side wall.

The retractable vehicle seat has been put into practical use in some vehicles. Patent Document 1 below discloses such a retractable vehicle seat.
The retractable vehicle seat disclosed in Patent Document 1 includes a lock device for holding the stored seat in the storage position. Such a locking device includes a striker on the back of the seat back and a latch mechanism on the side wall of the vehicle.

JP 2008-207699 A

The retractable vehicle seat of Patent Document 1 employs a latch mechanism that engages with a striker as a locking device, but the latch mechanism accepts and holds an incoming striker when locked, and when unlocked, The structure is such that the striker that has been held is released, and there is a problem that the structure is complicated and expensive.
In view of such a problem, an object of the present invention is to provide a lock device for holding a retractable vehicle seat in a retracted position by using a member provided for other purposes. It is to reduce the number of parts and to make it inexpensive.

A first invention of the present invention is a retractable vehicle seat in which a seat back is folded on a seat cushion, and further, the seat cushion is pivotable about the vehicle side wall side of the seat cushion and can be stored along the vehicle side wall. A locking device is configured by a hook provided on the back surface of the seat back and an engaged member that is supported by a vehicle body and disposed on the side wall of the seat cushion, and at the retracted position of the seat, the hook is By engaging with the engaged member, the seat can be held in the retracted position, and the engaged member extends along the vehicle longitudinal direction over at least a range corresponding to the seat cushion. It is characterized by providing.
According to the first aspect of the present invention, the engaged member including the engaging portion extending along the vehicle front-rear direction is used for other purposes, for example, a handrail for a seated occupant, a support for a cover body covering the seat cushion. It is not necessary to provide the engaged member exclusively for the locking device. In other words, it is possible to use a member provided for another application as an engaged member of the lock device, and not to newly provide an engaged member for the lock device. Therefore, the number of parts of the lock device can be reduced and the structure can be reduced.

According to a second aspect of the present invention, in the first aspect, when the seat is in the seating position, a rotation knob is attached to a surface facing the seat cushion on the lower side of the seat back, and the rotation knob is rotated around the central axis. Thereby causing the hook to protrude from the seat back surface to engage with the engaged member, and a non-protruding to release the engagement with the engaged member by retracting the hook from the protruding position. The rotary knob and the hook are connected by connecting means so as to be moved between positions.
According to the second invention, when the seat back is in the seating position, the rotary knob is attached to a surface facing the seat cushion on the lower side of the seat back. Therefore, when the seat back is in the seating position, the rotation knob is located near the vehicle floor away from the position of the vehicle occupant's eyes, and at least a part of the rotation knob is covered by the seat back or the seat cushion. , Made inconspicuous from vehicle occupants. As a result, deterioration of the appearance of the sheet due to the exposure of the rotary knob can be suppressed.
In addition, since the rotary knob is employed as the operating body for moving the hook between the protruding position and the non-projecting position, the operating body can be operated with good operability in a small space.

According to a third aspect of the present invention, in the first or second aspect, the seat cushion is configured to be slidable in the front-rear direction with respect to the vehicle body.
According to the third aspect, the engaging portion of the engaged member extends along the vehicle longitudinal direction over at least a range corresponding to the region from the front end of the seat cushion to the position between the front and rear ends. Therefore, even if the position of the hook changes in the vehicle longitudinal direction as the seat cushion slides back and forth, the hook can be engaged with the engaging portion of the engaged member, and the retractable vehicle seat can be moved in the vehicle longitudinal direction. There is an effect that can be applied to a slideable one.

1 is a perspective view of a retractable vehicle seat according to a first embodiment of the present invention. FIG. 3 is a perspective view of the retractable vehicle seat according to the first embodiment, showing a state where the seat is in a retracted position. FIG. 3 is an enlarged vertical sectional view of a hook portion in FIG. 2. It is a perspective view of the retractable vehicle seat of the 1st embodiment, and shows the state where the engaged member which constitutes a locking device was used for other uses. It is a perspective view of the retractable vehicle seat of the first embodiment, and shows a state in which the engaged member constituting the lock device is used for another use different from FIG. It is a perspective view of the retractable vehicle seat which is a 2nd embodiment of the present invention.

<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. 1st Embodiment has shown the example by which the sheet | seat of the back row right side of a vehicle is stored along the right side wall of a vehicle. In each figure, F indicated by an arrow indicates the front of the vehicle, U indicates the upper side of the vehicle, and R indicates the right side of the vehicle.
In this example, the seat folds the seat back 40 on the seat cushion 50, and further rotates around a hinge bracket 52 on the vehicle side wall side (vehicle right side) of the seat cushion 50 to follow the vehicle side wall (not shown). Can be stored. FIG. 1 shows a state where the seat is in the seating position, and FIG. 2 shows a state where the seat is in the retracted position. In both figures, the state seen through the vehicle side wall from the vehicle side wall side is shown.
Leg portions 51 are provided on the bottom surface of the seat cushion 50 as is well known, and a pair of latch mechanisms provided at the ends of the leg portions 51 are provided with a pair of strata (not shown) provided on the vehicle floor (not shown). By engaging with (not shown), the seat cushion 50 is fixed to the vehicle floor. When the seat cushion 50 is flipped up to the retracted position with the hinge bracket 52 as the center, the leg portion 51 is rotated around the end opposite to the side where the latch mechanism is provided as the hinge center, and the recess on the bottom surface of the seat cushion 50 It is configured to be stored in (not shown).

As shown in FIGS. 1 to 3, a hook 10 is provided on the back surface of the seat back 40. As shown in FIG. 1, the hook 10 is located at the vehicle right center of the back of the seat back 40 when the seat is in the seating position, and when the seat is in the retracted position, the seat is seated as shown in FIG. The rear surface of the back 40 is in a position facing the vehicle side wall.
As shown in FIG. 2, an engaged member 20 is provided at a position corresponding to the hook 10 in a state where the sheet is in the retracted position. In FIG. 2, the hook 10 is engaged with the engaged member 20. It shows the state. The sheet is held in the retracted position by such engagement, and the hook 10 and the engaged member 20 constitute a locking device according to the present invention.

In the hook 10, one end side of a connecting rod 13 is coupled to a generally hook-shaped hook body 11, and a rotary knob 12 is coupled to the other end of the connecting rod 13. The hook body 11 is housed in a recess 47 on the back surface of the seat back 40, and the rotary knob 12 is disposed on the surface facing the seat cushion 50 below the seat back 40 when the seat back 40 is in the seating position. Has been. Therefore, the connecting rod 13 is arranged on the inner surface side covered with the seat skin of the seat back 40 so as not to be exposed on the back surface of the seat back 40 so as not to impair the appearance of the seat back 40.
A hook portion 11A is formed at the end of the hook body 11, and the hook member 11 can be engaged with the engaged member 20 by the hook portion 11A. The state in which the hook body 11 is housed in the recess 47 corresponds to the state in which the hook is in the non-projecting position in the present invention.

FIG. 3 shows the structure of the seat back 40 where the hook 10 is provided. The connecting rod 13 includes a sub frame 42 fixed to the seat back frame 41 and a pipe 43 fixed to the seat back frame 41. It is fixed so that it can rotate freely. A bearing 43 </ b> A is provided at a portion of the pipe 43 that supports the connecting rod 13, and a resin collar 43 </ b> B is inserted between the bearing 43 </ b> A and the connecting rod 13. The resin collar 43B is configured to give an appropriate frictional force to the rotating connecting rod 13, and prevents the hook body 11 from being inadvertently changed in position due to a small external force.
In FIG. 3, 44 is a reclining mechanism, 46 is a connecting rod for interlocking the left and right reclining mechanisms 44, and 45 is a shield that covers the reclining mechanism 44.

As shown in FIGS. 1 and 2, an engaged member 20 is provided on the vehicle side wall side of the seat cushion 50 on the right side of the vehicle. The engaged member 20 includes a rod-shaped body 21 having a pipe-shaped pipe. It is fixed on the floor (not shown). The rod-shaped body 21 includes leg portions 21A and 21B fixed to the vehicle floor, and engagement portions 21C extending between the leg portions 21A and 21B. The engagement portions 21C are seat cushions 50 along the vehicle front-rear direction. It extends over a range corresponding to a region from the front end to the vicinity of the rear end.
As shown in FIG. 2, when the rotary knob 12 is rotated about the central axis with the seat in the retracted position, the hook body 11 is rotated via the connecting rod 13, and the claw portion 11A protrudes from the recess 47 to the protruding position. The engagement member 20 is configured to be engaged.

By the way, the engaged member 20 is not provided only for the locking device for holding the retractable vehicle seat in the retracted position as described above, but as shown in FIG. It is provided as a support for the cloth cover 71 covering the surface, and as a support for the board 72 fixed on the seat cushion 50 as shown in FIG. The cloth cover 71 is used to prevent the seat cushion 50 from being soiled when a pet such as a dog is placed on the seat cushion 50, and the board 72 collectively puts food, drinks, etc. on the seat cushion 50. In some cases, it is used to form a flat surface. The end portions of the cloth cover 71 and the board 72 are provided with hooking portions 71A and 72A, respectively, and the hooking portions 71A and 72A are hooked on the engaging portion 21C of the engaged member 20 so that the cloth cover 71 and the board 72 are hooked. 72 is supported on the seat cushion 50.
The engaged member 20 is a handrail for holding the upper body that can be used when an occupant with a small height sits on the seat cushion 50 when the cloth cover 71 and the board 72 are not attached to the seat cushion 50. You can also.

As described above, according to the first embodiment, the engaged member 20 provided for other uses is used as the engaged member 20 of the locking device, and is engaged for the locking device. The member material 20 may not be newly provided. Therefore, the number of parts of the lock device can be reduced and the structure can be reduced.
Further, according to the first embodiment described above, the rotary knob 12 is attached to the surface facing the seat cushion 50 on the lower side of the seat back 40 when the seat back 40 is in the seating position. Therefore, when the seat back 40 is in the seating position, the rotation knob 12 is located near the vehicle floor away from the position of the vehicle occupant's eyes, and at least a part of the rotation knob 12 is provided by the seat back 40 or the seat cushion 50. It is covered and hidden from the vehicle occupants. As a result, the deterioration of the appearance of the sheet due to the exposure of the rotary knob 12 can be suppressed.
Further, since the rotary knob 12 is employed as the operating body for moving the hook body 11 of the hook 10 between the protruding position and the non-projecting position, the operating body can be operated with good operability in a small space.

Second Embodiment
A second embodiment of the present invention will be described with reference to FIG. The feature of the second embodiment with respect to the first embodiment described above is that the seat is configured to be slidable in the vehicle front-rear direction. In the second embodiment, the other points are the same as those in the first embodiment, and the same parts are not shown. In the parts shown in the figure, the same parts are denoted by the same reference numerals and the description thereof is omitted. .

In FIG. 6, corresponding to both sides of the seat cushion 50, the lower rail 61 of the slide rail 60 is provided on the vehicle floor along the vehicle front-rear direction. Although not clear from FIG. 6, the lower rail 61 is embedded in the vehicle floor as is well known. Each lower rail 61 is provided with an upper rail 62 slidably with respect to the lower rail 61, and the leg portion 53 of the seat cushion 50 is separated from the left upper rail 62 via a pair of locking mechanisms 63 toward the front of the vehicle. It is combined as possible. The upper rail 62 on the right side (vehicle side wall side) toward the front of the vehicle is fixed to a frame (not shown) of the seat cushion 50 via a hinge portion 54.
Therefore, the seat can be slid forward and backward by the upper rail 62 sliding along the lower rail 61. At any sliding position, the lock mechanism 63 is unlocked and the seat cushion 50 jumps around the hinge portion 54. When raised, the back surface of the seat back 40 is stored along the vehicle side wall. When the seat is in the retracted position as described above, the hook 10 is in a position corresponding to the engaging portion 21C of the engaged member 20 as in the case of the first embodiment described above. When the hook body 11 is engaged with the engaging portion 21 </ b> C by rotating, the sheet can be held in the retracted position.

  As described above, the seat is slid back and forth along the vehicle longitudinal direction, and accordingly, the hook 10 is also moved in the vehicle longitudinal direction. However, the engaging portion 21C of the engaged member 20 extends over a range corresponding to the region from the front end to the vicinity of the rear end of the seat cushion 50, as in the first embodiment, and the seat It extends from the position corresponding to the hook 10 when it is at the front most position (front end position) of the slide to the position corresponding to the hook 10 when the seat is at the rear most position (rear end position) of the front and rear slide. ing. Therefore, even if the position of the hook 10 changes in the vehicle front-rear direction, the hook 10 can be engaged with the engaging portion 21 </ b> C of the engaged member 20. In this manner, the retractable vehicle seat can be applied to a vehicle that can slide in the vehicle front-rear direction.

As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. For example,
1. The hook is not limited to the one in the above embodiment, and various types of hooks can be adopted.
2. The hook may protrude from the seat back surface even in the non-projecting position. Further, the hook may be configured to be accommodated in the seat back surface at the non-projecting position.
3. The engaged member is fixed to the vehicle floor in the above embodiment, but may be fixed to the vehicle side wall or the vehicle ceiling.
4). The engaging portion of the engaged member may be set to a length that protrudes from the front and rear ends of the seat cushion, or a length that fits inside the front and rear ends of the seat cushion.
5. The connecting means for connecting the hook and the rotary knob may use a force transmission cable, a link mechanism or the like.

10 Hook (locking device)
11 hook body 11A claw part 12 rotary knob 13 connecting rod (connecting means)
20 engaged member (locking device)
21 Rod-shaped body 21A, 21B Leg portion 21C Engagement portion 40 Seat back 41 Seat back frame 42 Subframe 43 Pipe 43A Bearing 43B Resin collar 44 Reclining mechanism 45 Shield 46 Connecting rod 47 Recess 50 Seat cushion 51, 53 Leg 52 Hinge bracket 54 Hinge part 60 Slide rail 61 Lower rail 62 Upper rail 63 Lock mechanism 71 Cloth cover 71A, 72A Hook part 72 Board

Claims (3)

A seat for a retractable vehicle, wherein the seat back is folded on the seat cushion, and the seat side wall of the seat cushion is pivoted about the hinge to be retractable along the vehicle side wall.
A locking device is configured by a hook provided on the back surface of the seat back and an engaged member that is supported by a vehicle body and disposed on the side wall of the seat cushion. In the seat retracted position, the hook is By engaging the engaged member, the sheet can be held in the storage position,
The retractable vehicle seat according to any one of the preceding claims, wherein the engaged member includes an engaging portion that extends at least in a range corresponding to the seat cushion along the longitudinal direction of the vehicle. In claim 1,
When the seat is in the seating position, a rotation knob is attached to a surface facing the seat cushion on the lower side of the seat back, and the hook is protruded from the seat back surface by rotating the rotation knob about the central axis. The rotary knob and the oscillating knob are moved so as to move between a projecting position for engaging with the engaged member and a non-projecting position for retracting the hook from the projecting position and releasing the engagement with the engaged member. A retractable vehicle seat characterized in that the hook is connected by connecting means. In claim 1 or 2,
The seat cushion is configured to be slidable in the front-rear direction with respect to a vehicle body.

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