JP2014046826A - Retractable vehicle seat - Google Patents

Abstract

A seat is stored in a retractable vehicle seat that is folded on a seat cushion and further pivoted about a vehicle side wall side of the seat cushion 50 as a hinge center and can be stored along the vehicle side wall. By configuring the lock device for holding in position with two members whose engagement surfaces are overlapped and released only by relative movement, the structure of the lock device is simplified and inexpensively configured.
A lock device is constituted by a pin 10 provided on a seat back 40 side and an engaged member 20 provided on a vehicle side wall B, and overlaps and engages with each other when the lock device is locked. The latter of the rear surface of the flange portion 12 of the pin 10 and the inner surface of the slide lever 22 of the engaged member 20 can be moved rearward of the vehicle. The locked state of the locking device to be engaged and the unlocked state of the locking device in which the engagement surfaces do not overlap with each other are realized.
[Selection] Figure 6

Description

  The present invention relates to a retractable vehicle seat in which a seat back is folded on a seat cushion, and further, an end portion of the seat cushion is rotated about a hinge to be compactly stored in a vehicle interior.

The retractable vehicle seat has been put into practical use in some vehicles. Patent Document 1 below discloses a retractable vehicle seat that can be stored along a vehicle side wall.
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 locking device for holding a retractable vehicle seat in a retracted position by two members whose engagement surfaces are overlapped and released only by relative movement. By configuring, the configuration of the lock device is simplified and inexpensively configured.

The first invention of the present invention is a retractable vehicle seat that can be compactly stored in the vehicle interior by folding the seat back on the seat cushion and further turning the end of the seat cushion around the hinge. A locking device is provided on the seat back and a fixed side member corresponding to the seat back when the seat is stored, and holds the seat in the storage position at the storage position of the seat, and the locking device includes a hook and a hook. A direction along the surface of one of the hooks and the engaging surfaces of the engaged members that are engaged with each other when the locking device is locked. The locking device is configured such that the engaging surfaces overlap and engage with each other, and the engaging surfaces do not overlap with each other and do not engage with each other. Characterized in that the unlocked state of the click device can be realized.
According to the first aspect of the present invention, the lock device is locked and unlocked by relatively moving one of the engagement surfaces of the hook and the engaged member that are overlapped with each other in the direction along the surface. Is realized. For this reason, the configuration of the lock device can be simplified and inexpensively configured.

According to a second aspect of the present invention, in the first aspect, the seat can be stored along the vehicle side wall by folding the seat back onto the seat cushion and further rotating the seat side wall of the seat cushion about the hinge. The hook is provided on a seat back and the engaged member is provided on a side wall of the vehicle, and the engaging surface of the engaged member is movable in the vehicle front-rear direction. In this manner, the hook is engaged with and disengaged from the engaging surface of the hook.
According to the second aspect of the present invention, the locked state and the unlocked state of the locking device are realized by moving the engaging surface of the engaged member in the vehicle front-rear direction. Therefore, the engaged member provided on the vehicle side wall can be easily operated from the rear of the vehicle, and the operability can be improved.

According to a third aspect of the present invention, in the first or second aspect of the present invention, one of the engagement surfaces has an edge that is inclined with respect to the direction of relative movement, and the other of the engagement surfaces is The hook or member to be formed is provided with an abutting portion that can abut against the edge, and the edge is separated from each other in a direction along the surface of the engaging surface. A first edge along the first slope line and a second edge along the second slope line intersecting the first slope line, To do.
According to the third invention, when both engaging surfaces are overlapped and engaged, the first and second edge portions are brought into contact with the two portions of the contact portion. As a result, the abutting portion can be sandwiched and held by the two edges of the one engaging surface, and the hook and the engaged member can be engaged without rattling.
In addition, since the two engaging surfaces can be engaged with each other with the abutting portion sandwiched by the edge portions along the two inclined lines, when the two edge portions are separated from the abutting portion, both can be separated greatly. When the hook and the member to be engaged are engaged, the approach for engaging the hook and the engaged member can be performed with low dimensional accuracy.

1 is a perspective view of a retractable vehicle seat according to a first embodiment of the present invention. It is a perspective view which shows the state which has the retractable vehicle seat of the said 1st Embodiment in a retracted position. FIG. 3 is a perspective view similar to FIG. 2, showing a state of only a skeleton. It is a perspective view which shows the state which has the retractable vehicle seat of the said 1st Embodiment in a storing position, and shows the state by which the seat was hold | maintained at the vehicle side wall with the locking device. FIG. 5 is a vertical cross-sectional view of a locking device portion in FIG. 4. It is a horizontal sectional view of the locking device portion in FIG. It is a perspective view of the to-be-engaged member of the locking device of a 1st embodiment of the above. It is operation | movement explanatory drawing of the locking device of the said 1st Embodiment. It is composition explanatory drawing of the hook of the locking device of 2nd Embodiment of this 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 the hinge bracket 52 on the vehicle side wall B side of the seat cushion 50 to correspond to the vehicle side wall B (corresponding to the fixed side member of the present invention). It is possible to store along. FIG. 1 shows a state in which the seat is in the seating position, and FIGS. 2 to 4 show a state in which the seat is in the retracted position. In FIG. 4, the position of the seat back 40 and the seat cushion 50 indicated by solid lines is the storage position, and from the position before storage indicated by the two-dot chain line, the seat back 40 and seat are moved from the position before storage to the storage position indicated by the solid line. The cushion 50 can be flipped up.
As is well known, a leg 51 is provided on the bottom surface of the seat cushion 50, and a pair of latch mechanisms provided at the ends of the leg 51 are connected to the vehicle floor F as indicated by a two-dot chain line in FIG. The seat cushion 50 is fixed to the vehicle floor F by engaging with a pair of strikers 60 provided in the vehicle. As shown by the solid line in FIG. 4, when the seat cushion 50 is flipped up, the leg 51 is rotated around the end opposite to the side where the pair of latch mechanisms is provided as the hinge center, and the bottom surface of the seat cushion 50 It is comprised so that it may store in the recessed part of as shown by the arrow.

As shown in FIGS. 1 to 3, a pin 10 with a hook is provided on the back surface of the seat back 40. The pin 10 is located in the lower left part of the back of the seat back 40 when the seat is in the seating position as shown in FIG. 1, and the seat back is shown in FIGS. It is in a position facing the vehicle side wall B on the back side of 40.
As shown in FIGS. 3 and 5, the pin 10 is integrally provided with a flange 12 at the tip of the pin main body 11, and the pin main body 11 is welded to a pipe 41 forming a seat back frame via a bracket 13. Is fixed. At this time, the pin body 11 is configured so as to penetrate the cushion pad 42 and the seat skin 43 of the seat back 40, and the tip portion protrudes on the surface of the seat skin 43.
The pin 10 corresponds to the hook of the present invention.

As shown in FIG. 4, when the seat is in the retracted position, an engaged member 20 that forms a locking device together with the pin 10 is provided on the vehicle side wall B facing the pin 10 provided on the back surface of the seat back 40. It has been.
As shown in FIG. 7, the engaged member 20 includes a rail 21 having a shape in which a part of the wall surface of the square cylinder is cut, and a slide lever 22 slidably inserted into the cylinder of the rail 21. The slide lever 22 includes a rectangular cylindrical main body portion 22A inserted into the rail 21 and an operation portion 22D formed integrally with the main body portion 22A and protruding from the rail 21. Of the main body portion 22A of the slide lever 22, a portion corresponding to the cut portion of the rail 21 is formed with an arrow-shaped cutout portion 22E, and edges 22B and 22C forming a part of the cutout portion 22E are The slide lever 22 is arranged so as to be inclined with respect to the direction in which the slide lever 22 slides and moves in the rail 21 (vehicle longitudinal direction). The first inclined line formed by the edge 22B and the second inclined line formed by the edge 22C intersect each other.
A spring 23 is mounted on the opposite side of the main body portion 22A of the slide lever 22 from the operation portion 22D. The spring 23 is stretched between the vehicle side wall B and constantly urges the slide lever 22 forward of the vehicle. doing. For this reason, as shown in FIG. 8B, when the vehicle occupant grasps the operation portion 22D and pulls it toward the rear side of the vehicle, the slide lever 22 moves in the rail 21 against the biasing force of the spring 23. The tip of the pin 10 can be received in the main body 22A through the notch 22E of the main body 22A of the slide lever 22. Thereafter, when the vehicle occupant releases the hand holding the operation portion 22D, the main body portion 22A of the slide lever 22 is moved in the rail 21 by the urging force of the spring 23 as shown in FIG. The edge portions 22B and 22C come into contact with the first contact portion 11A and the second contact portion 11B at the tip portion of the pin 10 inserted into the main body portion 22A of the slide lever 22.
As described above, when the edges 22B and 22C are in contact with the two contact portions 11A and 11B of the pin 10, the inner surface of the main body portion 22A of the slide lever 22 and the back surface of the flange portion 12 of the pin 10 are engaged. The locking device which is engaged with the surface and is constituted by the pin 10 and the slide lever 22 is locked. As a result, the sheet can be held in the storage position.
As shown in FIGS. 4 to 6, the engaged member 20 is embedded in the vehicle side wall B except for the distal end portion of the operation portion 22D of the slide lever 22, and the distal end portion of the operation portion 22D of the slide lever 22 is It is exposed in the vehicle compartment through a through hole B1 formed in the vehicle side wall B. A through hole B2 is formed at a position corresponding to the pin 10 on the vehicle side wall B, and the pin 10 can enter the main body 22A of the slide lever 22 through the through hole B2.

  As described above, since the pin 10 is provided on the seat back 40 and the engaged member 20 with which the pin 10 is engaged is provided on the vehicle side wall B, the seat back 40 and the seat cushion 50 are stored along the vehicle side wall B. 4-6 and FIG. 8A, the tip of the pin body 11 including the flange portion 12 of the pin 10 is inserted into the body portion 22A of the slide lever 22 as shown in FIGS. 12 is engaged with the inner surface of the main body 22A of the slide lever 22. At this time, as shown in FIG. 8B, the tip of the pin main body 11 cannot enter the main body portion 22A of the slide lever 22 unless the operation portion 22D of the slide lever 22 is pulled. The operating portion 22D of the slide lever 22 is pulled while moving to the position. After the tip of the pin main body 11 is inserted into the main body portion 22A of the slide lever 22, the slide lever 22 is moved by the urging force of the spring 23 by releasing the pulling operation of the operation portion 22D of the slide lever 22. Thus, the back surface of the flange portion 12 of the pin 10 and the inner surface of the main body portion 22A of the slide lever 22 are engaged.

In this state, the edge portion of the main body portion 22A of the slide lever 22 is connected to the first contact portion 11A and the second contact portion 11B at the distal end portion of the pin 10 inserted into the main body portion 22A of the slide lever 22. 22B and 22C are in contact with each other under the urging force of the spring 23. For this reason, the tip of the pin body 11 is sandwiched and held between the edge 22B and the edge 22C, and the pin 10 can be engaged with the slide lever 22 of the engaged member without rattling. it can.
In this case, the edge portions 22B and 22C are inclined with respect to the direction in which the slide lever 22 slides and moves in the rail 21, and the first inclined line formed by the edge portion 22B and the edge portion 22C are Since the second inclined line is formed to cross each other, a large space can be secured on the side where the edge 22B and the edge 22C are separated from each other, and the pin main body 11 on the seat back 40 side can be secured. It is possible to reduce the dimensional accuracy of the alignment for the front end to enter the main body portion 22A of the slide lever 22 on the vehicle side wall B side.

As described above, according to the first embodiment, when the flange portion 12 of the pin 10 is moved into the main body portion 22A of the slide lever 22, the operation portion 22D is pulled, and thereafter the operation of the operation portion 22D is released. Then, the inner surface of the main body portion 22A of the slide lever 22 is overlapped with and engaged with the back surface of the flange portion 12 of the pin 10, and the lock device can be brought into the locked state. On the other hand, when the lock device is brought into the unlocked state, the operation portion 22D of the slide lever 22 may be pulled against the urging force of the spring 23. In this way, both when the locking device is in the locked state and when the locking device is in the unlocked state, it is only necessary to pull the operation portion 22D of the slide lever 22 and the operation can be simplified. Further, the slide lever 22 of the engaged member 20 provided on the vehicle side wall B can be easily operated from the rear of the vehicle, and the operability can be improved.
Moreover, the lock device can be switched between the locked state and the unlocked state depending on whether or not the inner surface of the main body portion 22A of the slide lever 22 is overlapped with the back surface of the flange portion 12 of the pin 10. This can be realized with a simple configuration that moves the vehicle 22 in the vehicle longitudinal direction. For this reason, the configuration of the lock device can be simplified and inexpensively configured.

Second Embodiment
A second embodiment of the present invention will be described with reference to FIG. The second embodiment is characterized in that the pin 10 can be moved between a state in which the pin 10 protrudes on the back surface of the seat back 40 and a state in which the pin 10 does not protrude. The pin 10 is in a projecting state when it is folded up, and is in a non-projecting state when the seat back 40 is in the occupant seating position. 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. 9, the pin 10 is provided on the back surface of the seat back 40 as in the case of the first embodiment, but the pin body 14 of the pin 10 passes through the bracket 44 coupled to the pipe 41. Has been placed. The inner end of the seat back 40 of the pin body 14 is coupled to the engagement piece 15, and the engagement piece 15 is coupled to the other end of the spring 18 having one end coupled to a seat frame (not shown) of the seat back 40. . Therefore, the pin body 14 is urged by the spring 18 so as to protrude from the back surface of the seat back 40. The amount of protrusion of the pin body 14 at this time is regulated by the middle part of the pin body 14 engaging the bracket 44.
The engaging piece 15 is connected to one end of the link 17 via a connecting pin 16. The link 17 is swingable with respect to a seat frame (not shown) of the seat back 40 around a support point 17A in the vicinity of the center of gravity, and the other end of the link 17 slides in the outer case 46. It is connected to one end of an inner cable 47 that is made free. On the other hand, the other end of the inner cable 47 is connected to one end of a link 48 provided in the vicinity of the connecting portion between the seat cushion 50 and the seat back 40. The link 48 is swingable with respect to the seat cushion 50, and the lower end portion of the seat back 40 is connected to the other end of the link 48 so as to swing in response to the movement of the seat back 40 with respect to the seat cushion 50. Are combined.

The state of FIG. 9 shows a state in which the seat back 40 is folded so as to overlap the seat cushion 50. At this time, the inner cable 47 is pushed into the outer case 46 by the link 48, swings the link 17, and causes the pin body 14 to protrude from the back surface of the seat back 40 via the connecting pin 16 and the engagement piece 15. ing.
When the seat back 40 is raised from the seat cushion 50 as indicated by a two-dot chain line from the state of FIG. 9, the inner cable 47 is pulled out from the outer case 46 by the link 48 that is swung with the movement of the seat back 40. The inner cable 47 swings the link 17 and moves the pin body 14 through the connecting pin 16 and the engagement piece 15 so as not to protrude from the back surface of the seat back 40.
As described above, according to the second embodiment, when the seat back 40 is folded on the seat cushion 50, the pin main body 14 is in the protruding state, and has been described in the first embodiment. Similarly, the pin body 14 can function as a locking device. On the other hand, when the seat back 40 is in the occupant seating position, the pin main body 14 is brought into a non-projecting state, so that the pin main body 14 can be prevented from getting in the way.

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 hooked pin in each embodiment, and may be a hook-shaped hook.
2. The hook and the engaged member may be moved relative to each other by moving the seat.
3. The direction of relative movement between the hook and the engaged member is not limited to the vehicle front-rear direction, and may be the vehicle up-down direction or an oblique direction intermediate between these directions.
4). There may be no spring for urging the slide lever of the engaged member.
5. The first and second inclined lines formed by the edge of the slide lever of the engaged member are not limited to straight lines, and may be formed by curved lines.
6). In the embodiment described above, the hook is provided on the seat back and the engaged member is provided on the vehicle side wall. However, the hook may be provided on the vehicle side wall and the engaged member may be provided on the seat back.
7). In the above embodiment, the seat is stored along the side wall of the vehicle. However, the seat back is folded on the seat cushion, and the seat cushion is stored by being rotated about the front end of the seat cushion as a hinge center. You may apply to a tumble sheet.

10 pin (hook) (locking device)
11, 14 Pin body 11A, 11B Abutting portion 12 ridge portion 13 bracket 15 engaging piece 16 connecting pin 17 link 17A support point 18 spring 20 engaged member (locking device)
21 Rail 22 Slide lever 22A Main body 22B First edge (first inclined line)
22C second edge (second slope)
22D Operation part 22E Notch part 23 Spring 40 Seat back 41 Pipe 42 Cushion pad 43 Seat skin 44, 45 Bracket 46 Outer case 47 Inner cable 48 Link 50 Seat cushion 51 Leg part 52 Hinge bracket 60 Strike B Vehicle side wall (fixed side member)
B1, B2 Through hole F Vehicle floor

Claims (3)

A seat for a retractable vehicle, wherein the seat back is folded on the seat cushion, and further, the end of the seat cushion is pivoted about the hinge and can be stored compactly in the vehicle interior,
A locking device that is provided in the seat back and a fixed-side member corresponding to the seat back when the seat is stored, and holds the seat in the storage position at the storage position of the seat;
The locking device includes a hook and an engaged member that can be engaged with the hook,
When the locking device is locked, one of the engaging surfaces of the hook and the engaged member that are overlapped and engaged with each other is configured to be relatively movable in a direction along the surface. A retractable state in which the lock state of the lock device in which the engagement surfaces overlap with each other and the lock device in which the engagement surfaces do not overlap and engage with each other are realized. Vehicle seat. In claim 1,
The seat is a retractable vehicle seat that can be folded along the vehicle side wall by folding the seat back on the seat cushion and further turning the vehicle side wall side of the seat cushion around the hinge.
The hook is provided on a seat back, and the engaged member is provided on a vehicle side wall,
The engagement surface of the engaged member is movable in the vehicle front-rear direction, and is engaged with and disengaged from the engagement surface of the hook by this movement. Sheet. In claim 1 or 2,
One of the engagement surfaces has an edge that is inclined with respect to the direction of relative movement;
The hook or the engaged member that forms the other of the engagement surfaces includes a contact portion that can contact the edge portion,
The edge portion includes a first edge portion along the first slope line and a first slope line so that the contact portion is separated from each other in a direction along the surface of the engagement surface. A retractable vehicle seat comprising: a second edge along a second inclined line that intersects with the second inclined line.

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