JPH0684140B2 - Folding sheet - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding seat mounted on an automobile or the like and provided slidably with respect to a vehicle body, and more particularly to a slide lock unlocking technique.

(Prior Art) Conventionally, as a folding sheet provided with a slide mechanism, for example, one described in JP-A-60-244634 is known.

In this conventional folding seat, a seat back is foldably provided at a rear end portion of a seat cushion, and the seat cushion can be locked and unlocked with respect to a slider slidable on a slide rail of a vehicle body. A first lock member and a second lock member capable of locking and unlocking the slider with respect to the slide rail are provided, and further, the lock releasing operation of the second lock member is interlocked with the lock releasing operation of the first lock member. Was provided with a connecting member for performing.

That is, when folding the folded seat to stand up, after folding the seat back with respect to the seat cushion,
The lock release lever is unlocked to unlock the first lock member. Then, the operating force is transmitted to the second lock member via the connecting member, the second lock release member is unlocked at the same time, and the folding sheet is moved forward along the slider rail. .

(Problems to be Solved by the Invention) However, in the conventional folding sheet as described above, the lock release operation of the lock release lever of the first lock member causes the first lock member and the second lock member to be released. Since both locks are to be released, there is a problem that the operation force of the lock release lever is large and the operability is poor.

In addition, if another lock device, for example, a lock of a reclining device is also to be unlocked at the same time, there is a problem that a larger operating force is required.

An object of the present invention is to improve the operation force for unlocking a folding sheet.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a slider is provided slidably in the front-rear direction with respect to a slide guide member fixed to a vehicle body, and is supported by the slider. Further, a seat cushion is pivotally mounted on the slider so as to be able to stand and rotate about the front end of the slider, and the seat back is rotatable at the rear end of the seat cushion by being biased in the folding direction by a folding spring. A reclining device that is attached to the seat cushion and is operated by a reclining lever for locking and unlocking the rotation of the seat back so that the seat back is foldable, and a seat cushion is provided between the seat cushion and the slider. A seat lock that locks and unlocks the
A lock release lever that is connected to both the seat lock and the reclining device and is capable of releasing both locks at the same time is provided, and the slider is locked to the slide guide member between the slider and the slider guide member. A slide lock for unlocking is provided, and an interlocking mechanism for unlocking the slide lock is provided between the slide lock and the seat cushion in association with the standing rotation of the seat cushion with respect to the slider. A configuration is adopted in which a drive transmission member that is connected to the vicinity of the rotation center of the seat cushion and the other end is connected to a member on the slide lock side and that transmits the rotation of the seat cushion to the slide lock is adopted.

(Operation) To fold only the seat back of the folding seat configured as described above, operate the reclining lever.
As a result, the reclining device is unlocked, the seat back is rotatable, and the seat back can be folded by the action of the folding spring. In this case, the seat lock or the slide lock is in a locked state, and the back surface of the folded seat back can be used as a table or the like.

Next, when the folding seat of the present invention is folded upright and slid forward, for example, it is a case of getting off or getting on from the seat on the rear side of the folding seat. A folding operation for folding the back on the seat cushion and a standing rotation operation for rotating the seat cushion in the standing state together with the seat back in the folded state are performed.

In this case, unlike the case where only the seat back is folded, the lock release lever is operated when folding the seat back. By operating this lock release lever, the reclining device is unlocked, the seat lock is unlocked, and the seat back can be folded and the seat cushion can be raised and rotated at the same time. It is automatically folded by the biasing force of the spring. Then, after the seat back is folded, when the seat cushion is turned upright, the slide lock is unlocked by the interlocking mechanism, and the folded seat in the folded and upright state is moved forward with respect to the vehicle body. Can be slid onto.

Therefore, before raising the folding sheet, only the operation of the lock release lever needs to be performed, and the operation force is small and the operation is easy.

Further, as described above, since the slide lock is unlocked by utilizing the operation force of the upright rotation of the seat cushion, it is possible to apply the principle of leverage to unlock the slide lock with a small operation force. In other words, the seat cushion is pivotally attached to the front end, and when the seat cushion is rotated upright, the seat cushion is held upright by the rear end side. On the other hand, since one end of the drive transmission member that transmits the standing rotation of the seat cushion to the slide lock is connected to a position near the center of rotation of the seat cushion, a large lever ratio is obtained and the slide lock is unlocked. The operation force required to lift the seat cushion is extremely small.

In addition to this, in conjunction with the unlocking operation of the seat lock, for example, even when the reclining device is unlocked at the same time to fold the seat back, the operation force for releasing the two locks will suffice. The required operating force is not particularly large and the operability is good.

(Examples) Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment will be described.

FIG. 2 is an overall perspective view showing a folding seat A according to an embodiment of the present invention, in which 1 denotes a seat cushion. The seat cushion 1 serves as a seating portion for the folding seat A. A seat back 2 is provided at a rear end of the seat cushion 2 so that the seat back 2 can be folded forward, and a slide mechanism 4 is provided on the lower surface between the vehicle body floor 3 and the left and right. It is provided in a pair.

The seat back 2 serves as a backrest portion of the folding seat A. One lower side surface is pivotally attached to a hinge bracket 11 fixed to one rear side surface of the seat cushion 1, and the other lower side surfaces are rear portions of the seat cushion 1 and the like. When the locking teeth 51, which are connected to the side surface through the reclining device 5 and serve as a locking device of the reclining device 5, are removed, the folding spring (not shown) urges the seat cushion 1 on the seat cushion 1 in the folding direction. The structure is such that it can be folded forward (see Fig. 3 (b)).

In addition, the reclining device 5 is tilted backward when the seat back 2 is pushed backward against the spring with the locking teeth 51 removed, and when it is tilted to a desired angle, the locking teeth 51 are locked again. For example, the seat back 2 is a conventionally known one that is held at that angle.

The locking teeth 51 of the reclining device 5 are connected to a reclining lever 52 provided on the hinge bracket 11 via a release wire 53. By pulling the reclining lever 52, the locking teeth 51 are disengaged and the reclining. The device 5 is unlocked.

The slide mechanism 4 includes a slide rail 41 that is a slide guide member that is fixed to the vehicle body floor 3 so as to extend in the front-rear direction, and a slider 42 that is slidably fitted to the slide rail 41. There is. And this slider
A slider-side bracket 43 is provided at the front end of 42, and a seat bracket 12 provided on the lower surface of the front end of the seat cushion 1 is rotatably attached to the slider-side bracket 43 by a rotation shaft 15. As a result, the seat cushion 1 is rotatably supported by the slider 42.

Further, the rear end portion of one slider 42 and one rear end portion of the seat cushion 1 are connected via a seat lock 6. Further, a rubber member is provided at the rear end of the other slider 42.
The rear leg 13 is attached with the rubber member 44 and is foldably provided on the other side of the rear end of the seat cushion 1 on the rubber member 44.
Is placed and supported.

The rear leg 13 and one of the slider-side brackets 43 are connected by an interlocking rod 14 as an interlocking member so as to be folded when the seat cushion 1 is erected, as shown in FIG. 3D. It is connected.

Further, as shown in FIG. 1, a slide lock 7 is provided between the slide rail 41 and the slider 42. In this slide lock 7, the release lever 71 is a slider.
This release lever is installed along the side of 42 and
71 is rotatably supported by the slider 42, and further, a latch 72 is projectingly provided on the release lever 71, and the latch 72 has locking teeth formed along the slide rail 41 (not shown).
The slider 42 is locked to slide on the slide rail 41 by engaging with, and the lock is released by the latch 72 being disengaged from the locking teeth by the rotation of the release lever 71, so that the slider 42 moves back and forth on the slide rail 41. It can slide in any direction.

The slide mechanism 4 is provided with a spring 45 between the front end of the slide rail 41 and the rear end of the slider 42. When the slide lock 7 is unlocked, the pulling force of the spring 45 is applied. Thus, the slider 42 is biased so as to move to the sliding front end position.

Further, a first interlocking mechanism 8 as an interlocking mechanism is provided between the slide lock 7 and the seat cushion 1. That is, the interlocking shaft 82 is rotatably attached to the slider-side bracket 43 provided on the slider 42,
A first interlocking arm 83 and a second interlocking arm 85 are fixed to one end of the interlocking shaft 82. The first interlocking arm 83 and the vicinity of the rotation shaft 15 of the seat bracket 12 provided on the seat cushion 1 are connected by a wire 84 as a drive transmission member, and when the seat cushion 1 is rotated upright, the seat bracket 1 is rotated. The interlocking shaft 82 is adapted to rotate with the rotation of 12. Further, one end of an interlocking rod 86 is attached to the second interlocking arm 85, and the other end of the interlocking rod 86 is attached to an interlocking plate 87 projecting from the release lever 71 through an elongated hole 88. When the interlocking shaft 82 is rotated as described above, the release lever 71 is rotated so as to unlock the slide lock 7. The elongated hole 88 is provided to allow the operating force to be transmitted so as not to be transmitted to the interlocking shaft 82 side when the release lever 71 is rotated to unlock. Also, interlocking rod 86, second
A torsion spring 89 that urges the interlocking arm 85 and the like toward the slider-side bracket 43 so as to return the interlocking arm 85 and the like to the original position (illustrated position) is fitted to the interlocking shaft 82. And the release lever 71
A torsion spring 73 that normally biases the latch 72 to hold the latch 72 in a locked state in which the latch 72 is engaged with the release lever 71 is fitted to the release lever 71, and is provided between the release lever 71 and the slider 42.

Further, in this embodiment, the second interlocking mechanism 9 is provided for unlocking the reclining device 5 and the seat lock 6 at the same time. The second interlocking mechanism 9 is composed of a folding knob 91 and release wires 92 and 93, and the folding knob 91 is provided on the side surface of the seat cushion 2 so as to be vertically tiltable. Then, the folding knob 91 and the locking claw 51 of the reclining device 5 are connected to each other by the release wire 92 so that the reclining device 5 and the seat lock 6 can be unlocked by tilting the folding knob 91 upward. Further, the folding knob 91 and the release arm 61 of the seat lock 6 are connected by a release wire 93.

The seat lock 6 has a striker (not shown) and a catcher. The striker is fixed on the slider 42, the catcher is attached to the lower surface of the seat cushion 1, and the catcher is connected to the release arm 61. When the seat cushion 1 is returned to the seated state, the catcher engages with the striker, and when the folding knob 91 is operated, the catcher is released from the striker via the release wire 93 and the release arm 61, and the lock is released. It should be noted that a positioning / supporting post 62 (detailed view is omitted) for supporting front / rear / left / right positioning and a seat load is provided in the portion.
Is provided.

Next, the operation of this embodiment will be described.

Excessiveness when folding the folded sheet A of the present embodiment, standing it up, and further sliding it to the front end position will be described.

First, the folding knob 91 is pulled up and tilted upward in the sheet set state of the folded sheet A {Fig. 3 (A)}. Thereby, the locking teeth of the reclining device 5
51 is released and the seat back 2 is unlocked,
At the same time, the release arm 61 of the seat lock 6 is actuated in the release direction, and the lock of the seat lock 6 is released.

When the lock is released in this way, the seat back 2 is tilted forward on the seat cushion 1 to fold it (FIG. 3 (b)), and then the seat cushion 1 (folded seat A) is turned in this folded state. If the seat cushion 1 is rotated upright about the moving shaft 15 (Fig. 3 (C)), this seat cushion 1
Interlocking with the standing rotation operation of the wire 84 of the first interlocking mechanism 8
The interlocking shaft 82 is rotated against the torsion spring 89 via the interlocking shaft 82, and the pivoting of the interlocking shaft 82 pivots the release lever 71 of the slide lock 7 via the interlocking rod 86. And the locking claw (not shown) are released, the slide lock 7 of the slide mechanism 4 is unlocked, and at the same time, the folded sheet A is pulled by the spring 45.
Is slid to the slide front end position, and the state shown in FIG. Then, when only the seat back 2 is tilted forward and the back side of the seat back 2 is used as a table or a table, the reclining lever 52 is operated and the locking teeth of the reclining device 5 are operated via the release wire 53.
Unlock 51. As a result, the seat back 2 is pushed forward on the seat cushion 1 by being biased by a spring (not shown). In this state, both the seat lock 6 and the slide lock 7 remain locked, which is convenient for using the seat back 2 as a table.

Further, in this embodiment, the rear legs 13 are folded in association with the standing rotation of the seat cushion 1.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment. For example, the interlocking member in the interlocking device is not limited to the wire and may be a rod. One end of the second is the second
It may be connected to the interlocking arm, in which case the first interlocking arm may be omitted.

(Effects of the Invention) As described above, according to the present invention, a lock release lever that simultaneously releases the lock of the seat lock and the reclining device is provided, and the seat back has a folding spring that urges in the folding direction. The seat back is automatically folded before the seat cushion is erected and rotated when the folding seat is folded, and the seat back is placed on the front side of the foldable seat when the seat cushion is erected and rotated. Seats can be folded and erected smoothly without causing problems such as collision with members.

Further, even if the interlocking mechanism for simultaneously unlocking the seat lock and the other locking device such as the reclining device is provided, the operating force thereof may be the operating force for unlocking the two locking devices as in the conventional case. The operation force can be reduced while increasing the number of interlocking parts, and the folding operability of the folding sheet can be improved as a whole.

Furthermore, if the slide lock release of the flip-up seat is interlocked with the folding of the seat back, the back side of the seat back cannot be used as a table, but in the present invention, the reclining device is separately provided from the reclining lever for unlocking the reclining device. Since a lock release lever for unlocking the seat lock and the seat lock is provided, the back surface of the seat back can be used as a table or the like.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a folding sheet according to an embodiment of the present invention, FIG. 2 is an overall perspective view showing the folding sheet according to the embodiment, and FIG. 3 is a folding sheet for the folding sheet according to the embodiment. It is explanatory drawing which shows the operation process of. A: Folding seat 1 ... Seat cushion 2 ... Seat back 3 ... Vehicle floor 6 ... Seat lock 7 ... Slide lock 8 ... First interlocking mechanism 41 ... Slide rail (slide guide member) 42 ... …Slider

Claims (1)

[Claims] 1. A seat provided with a slider slidable in the front-rear direction with respect to a slide guide member fixed to a vehicle body, supported by the slider, and rotatable upright about a front end of the slider. A cushion is pivotally mounted, a seat back is rotatably attached to a rear end portion of the seat cushion by being biased in a folding direction by a folding spring, and the rotation of the seat back is locked and locked. A reclining device operated by a reclining lever for unlocking and folding is provided, and a seat lock for locking and unlocking the seat cushion with respect to the slider is provided between the seat cushion and the slider. It is connected to both the seat lock and the reclining device so that both locks can be unlocked at the same time. A lock release lever is provided, a slide lock for locking and unlocking the slider with respect to the slide guide member is provided between the slider and the slide guide member, and a seat cushion is provided between the slide lock and the seat cushion. Is provided with an interlocking mechanism for unlocking the slide lock in conjunction with the upright rotation of the slider. One end of the interlocking mechanism is connected to the vicinity of the rotation center of the seat cushion and the other end is connected to a member on the slide lock side. A folding seat having a drive transmission member for transmitting the rotation of the seat cushion to a slide lock.