JP3445168B2 - Slide sheet jump-up control structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flip-up restraining structure in a slide seat provided with a flip-up mechanism.

[0002]

2. Description of the Related Art For example, a seat (slide seat) equipped with a seat slide device that allows a seat to move in the front-rear direction under sliding of a slide rail (also called an upper rail) with respect to a guide rail (also called a lower rail) is known. , Various passenger cars, such as sedans (also known as saloons), station wagons (also simply called wagons), or front and rear seats for RV-based automobiles (multipurpose vehicles) such as minivans and 1-box cars, have become commonplace. There is.

By the way, in recent years, passenger cars,
There is a tendency to see it as a comfortable space that can be moved, not just as a means of movement, and as a means for creating that comfortable space, for example, multifunctional seats are required. As the required function for the seat, for example, a folding function of the seat in addition to the seat slide function and a function of flipping up from the folding are listed.

As the folding adopted in this type of seat, the folding by folding the seat back forward at the first hinge at the rear portion of the seat cushion is generally used.
From the folded state of the seat, the second hinge at the front end of the seat cushion flips up to the front inverted position.
It is widely known as a flip-up of a seat that effectively secures a rear space of an automobile compartment, particularly a passenger car.

[0005]

By the way, in a passenger car or the like, such as a steering wheel (handle) in a front seat, an instrument panel, a console box in a rear seat (second seat), a simple table, or the like, a front portion or a front portion of the seat is used. There are many indoor structures where various on-board facilities are located on the sides. On the other hand, as described above, when the seat is flipped up, the folded seat is flipped up forward by the second hinge at the front end of the seat cushion. Therefore, the flip-up function is simple for a slide seat such as a passenger car of this type. In addition, depending on the front and rear position of the seat, the flipped-up seat easily interferes with and comes into contact with on-vehicle equipment such as in front of the seat.

Such interference and contact of the seat with the on-vehicle equipment not only complicates the subsequent re-operation and post-treatment operation, but also causes damage to the on-vehicle equipment or the seat. Cheap. In other words, simply by adding the flip-up function to the slide sheet,
Although the functionality of the seat is enhanced by the addition of the flip-up function, there is a possibility that the operability may be deteriorated and that the on-board equipment and the appearance quality of the seat may be deteriorated due to damage or the like.

It is an object of the present invention to provide a flip-up restricting structure for a slide sheet, which prevents deterioration in operability, appearance quality and the like associated with the addition of a flip-up function.

[0008]

In order to achieve this object, according to the present invention, the front end of the seat cushion having the first hinge, which is the center of rotation of the seat back, at the rear portion thereof is the slide of the seat slide device. Second to the rail
The seat cushion is linked and pivotally attached to the front inverted position via a hinge, and the seat cushion can be held in the seated position by locking the locking means having a latch engageable with the striker of the slide rail. There is.

The link pivotally attached to the slide rail is connected to the movable member of the lock means so that the link can be synchronized with the lock release operation of the lock means by the lock release member. By fixing a release regulation plate having a rotation ensuring hole for ensuring the rotation of the link at a predetermined portion to the guide rail of the seat slide device, the lock is released at a position other than the alignment position of the link with the rotation ensuring hole. The unlocking operation itself of the member is disabled together with the unlocking of the locking means under the restriction of the rotation of the link by the engagement of the link with the unlocking restriction plate.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 (A), (B), (C), and FIG. 2, the flip-up restricting structure for a slide sheet according to the present invention.
In the seat cushion 10, the seat 12 is formed as a slide seat including the seat slide device 14, and the seat cushion is formed.
The seat back (18) with respect to the seat (16) can be folded under forward folding, and the lock means (20) in this folded state can be unlocked and flipped up to the front inverted position.

As shown in FIG. 2, in this seat (slide seat) 12, the seat back 18 is provided with respect to the seat cushion 16 at, for example, the first portion at the rear portion of the seat cushion.
The seat 22 is rotatable via a hinge 22, and in particular, the seat surface 18a of the seat cushion is connected and supported so that the seat surface 18a is brought forward so that the seat surface 18a abuts against the seat surface 16a. The front end of the seat cushion 16 is rotatably connected to the slide rail 26 of the seat slide device 14 via the second hinge 24, and the folding of the seat back 18 by the first hinge 22 (see the chain line), and Seats 12 can be flipped forward by two hinges (see the chain double-dashed line) in sequence.
Is configured.

For example, as can be seen from FIGS. 1A and 1B in addition to FIG. 2, the seat slide device 14 includes a seat side slide rail 26 and a floor side guide rail.
It is formed by slidably assembling to the 28 through steel balls 30, rollers 32, and other rolling elements, and the seat is set to an arbitrary front-back position under the slide regulation by a predetermined locking means (not shown). It is configured to be possible.

The structure of the seat slide device 14 of this type is well known, and the structure itself is not the purpose of the present invention, and therefore the detailed description thereof is omitted here.

Here, as shown in FIGS. 1 (A), 1 (C), and 2, in this seat 12 having the flip-up function as described above, a rotatable latch 34 is usually provided. The locking means 20 is arranged at the rear of the lower surface of the seat cushion 16, and the seat cushion, and thus the seat, are shown in solid lines in FIG. 2 under the engagement of the latch with the striker 38 fixed to the slide rail 26 of the seat slide device. It can be held in the normal sitting position shown by.

As can be seen from FIG. 1 (C), the locking means 20 includes a locking pawl capable of engaging with the latch 34 pivotally supported by the pivot pin 40 as well as the engaging end 34a of the latch. 42a
And a cam lever 44 that causes the lock plate to follow its rotation under the engagement of the engaging claws 44a with the lock plate 42, which are pivotally supported by the same pivot pin 46. The unit base 48 is formed as a unit so that it can be disposed at the rear portion of the lower surface of the seat cushion 16.

The connecting end 44b of the cam lever 44 extends to the rear portion of the seat through a predetermined lock releasing member, for example, between the rear end of the seat cushion 16 and the lower end of the seat back 18 for the pulling operation. 2 (see FIG. 2), which is interlockingly connected via a connecting wire 51 such as a flexible wire, and which is interlocked with the pulling operation of the strap, in the clockwise direction in the figure, and the lock plate 42.
The locking means 20 is configured so that the engagement of the latch 34 with the striker 38 can be released by the rotation of the.

In this type of locking means 20, the latch 34
Is normally biased in the disengagement direction (counterclockwise direction in the figure) with respect to the striker 38 under the biasing force of a return spring (not shown) such as a torsion spring. Also,
The cam lever 44 engages the lock plate 42 with the latch 34 under the biasing force of another return spring (not shown),
Holding direction (counterclockwise direction in the figure), that is, the engaging end 34 of the latch
It is biased in the engagement direction of the lock claw 42a of the lock plate to a.

Since the structure of the locking means 20 is publicly known and is not the subject of the present invention, it will not be described in detail here.

Here, as shown in FIGS. 1A, 1B, and 2, in the present invention, the link 52 is, for example,
Via the pivot of the fulcrum of the stepped pivot pin 54 to the bracket 53, it is rotatably arranged and supported by the slide rail 26 of the seat slide device, and the tip 52a of this link is provided.
An upper extension end 52b of the strap 52 is connected to a strap (lock releasing member) 50 via a connecting wire 56 so as to be interlocked.

As the connecting wire 56, for example, a so-called flexible wire in which an appropriate flexible wire material 56-1 is covered with a tube 56-2 so as to be movable back and forth can be used. In this type of connecting wire (flexible wire) 56, each end of the tube 56-2 is, for example, a locking plate 60 fixed to the slide rail 26, as shown in FIG. And the ends of the wire material 56-1 are respectively locked to the upper extension end 52b of the link and the strap 50, and the link material 52 is locked and locked in the tube by advancing and retracting the wire material. The strap can be rotated in association with the pulling of the strap in the unlocking direction and the unlocking operation of the locking means 20 by the strap.

That is, in this structure, the cam lever 44 of the locking means and the link 52 are individually connected via the connecting wires 51 and 56 so as to be interlocked with the unlocking operation of the locking means 20 by the strap 50. Therefore, when the lock means is to be unlocked by the pulling operation of the strap, the lock means and the link operate synchronously via the respective connecting wires.

For example, in the locking means 20, the pulling operation of the strap 50, that is, the unlocking operation,
As the cam lever 44 rotates in the direction of the arrow shown in FIG. 1 (C), and the lock plate 42 rotates in the same direction following the cam lever, as shown in FIG. 3 (C), the lock claw 42a of the lock plate 42a. Is separated from the engaging end 34a of the latch, and the lock of the locking means with respect to the striker 38 is released.

When the strap 50 is pulled,
As shown in FIG. 1 (A), the link 52 is pulled by pulling the connecting end 52b to the left side in the drawing through the connecting wire 56, as shown in FIG. 3 (C).
It is rotated counterclockwise as shown in.

As shown in FIG. 1 (A) and FIG. 2, the link 52 has, for example, a tip 52 on the front side (left side in the figure).
The biasing force of the return spring 62, which is set as the initial position with the a positioned, is a tension coil spring that is stretched by locking each end to the upper extending end 52b and the locking piece 53a of the bracket. Originally, it is biased and held at the initial position.

Further, as shown in FIGS. 1 (A) and 3 (A),
The initial position and the rotation limit position of the link 52 are defined by the stopper pieces 53b and 53c provided under the partial bending of the bracket 53, respectively.

As shown in FIGS. 1 (A) and 2, in the present invention, the rotation of the link 52 from the substantially initial position accompanying the unlocking operation by the strap 50 is engaged with the tip 52a of the link. Release restriction plate 64
However, it has a rotation ensuring hole 66 for ensuring the rotation of the link in a predetermined portion and is fixed to the guide rail 28 of the seat slide device.

As shown in FIGS. 1 (A) and 1 (B), the release restricting plate 64 is formed with a substantially inverted U-shaped portion 64a at its tip, and the substantially inverted U-shaped portion is arranged laterally. As a form, it is fixed to the guide rail 28. Then, the link 52 has a length and a width that can ensure the rotation of the link 52.
As a long hole-shaped square hole drilled on the upper surface of the U-shaped portion 64a,
The rotation ensuring hole 66 is provided in the release restricting plate 64.

As shown in FIGS. 1 (A) to 1 (C) and FIGS. 3 (A) to 3 (C), in this structure, the link 52 to the rotation ensuring hole 66 is provided.
Is defined as the position where the lock 50 can be unlocked, that is, the position where the seat 12 can be flipped up when the locking means 20 is unlocked. The lockable position is set to the front of the seat 12, such as the steering wheel (handle) in the front seat, the instrument panel, the console box in the rear seat (second seat), the simple table, or the like.
And the front and rear position of the seat that can be flipped up without touching or interfering with the on-board equipment on the front side, for example, the rear limit position of the slide rail 26 relative to the guide rail 28 that is the rear end position of the seat. And a rotation guarantee hole
The release restriction plate 64 is provided with 66.

If the slide rail 26 shown in FIGS. 1 (A) to 1 (C) is in the rearmost slide position, the link 52 is in the alignment position with the rotation ensuring hole 66 of the release restricting plate. Not subject to rotation restrictions. In other words, in the rear end position of this slide rail 26, the seat back
If the strap 50 is towed after the seat 12 is folded by folding the seat 18 forward (see the chain line in FIG. 2), the lock means 20 can be unlocked under the rotation of the link 52, and thus the striker. By unlocking the locking means with respect to 38, the seat can be flipped up (see FIGS. 1A to 1C and the chain double-dashed line in FIG. 2).

On the other hand, as shown in FIGS. 4A to 4C, the seat 12, that is, the slide rail 26 is a guide rail.
When the link 52 is moved forward from the rear limit position with respect to the slide 28, the link 52 is dislocated from the alignment position with the rotation ensuring hole 66 of the release regulation plate, and the tip 52a is engaged with the upper surface of the substantially inverted U-shaped portion 64a. The pulling operation of the strap 50 itself is restricted and prevented by the rotation restriction of the link of, so that
Unlocking operation of the locking means 20 accompanied by rotation of the latch 34,
As a result, the unlocking operation of the strap becomes impossible.

As described above, in the slide seat flip-up regulation structure 10 of the present invention, the link 52 of the slide rail is linked to the strap 50 so as to be interlocked, and
By providing the guide rail 28 with the release restricting plate 64 provided with the rotation ensuring hole 66, the lock release position of the locking means 20, that is, the position where the seat 12 can be flipped up, slides the slide rail 26 relative to the guide rail. Limited to the rear position. That is, according to the present invention,
Since the position where the seat 12 can be flipped up is limited to the rear end position of the slide, the seat can be easily flipped up without touching or interfering with the on-vehicle equipment located in front of the seat, etc. The prevention can surely prevent the deterioration of the appearance quality of the on-board equipment and the seat.

Then, the sheet 12 defined by this
If the unlocking operation of the lock means 20 is performed at the bounceable position, the seat can be reliably and easily bounced up without being obstructed by the on-board equipment, so that the reliability of the operation is improved.

Further, it is sufficient to connect the link 52 of the slide rail to the strap 50 in an interlocking manner and to fix the release restricting plate 64 provided with the rotation ensuring hole 66 to the guide rail 28, which complicates the structure. The position at which the seat 12 can be flipped up can be limited without being accompanied. Therefore, the high functionality of the seat 12 in which the flip-up function is added to the slide function does not deteriorate the operability, the on-vehicle equipment, the appearance quality of the seat, and the like, and easily without the complication of the configuration. Can be secured.

Here, in the embodiment of the present invention, the slide rail 26 slides with respect to the guide rail 28 of the seat slide device at the position where the link 52 is aligned with the rotation ensuring hole 66, that is, the position where the seat 12 can be flipped up. It is set and regulated at the end position, that is, the end position of the seat,
It is sufficient if the seat can be flipped up without coming into contact with or interfering with on-vehicle equipment such as the front of the seat, so it is not limited to the end position of the seat. A rotation guarantee hole may be provided at the front and rear positions corresponding to the flip-up possible position.

However, if the rotation ensuring hole 66 is provided so that the position where the seat 12 can be flipped up can be defined at the slide rear end position of the slide rail 26 with respect to the guide rail 28 of the seat slide device, the front seat, the rear seat, or the Regardless of the type of vehicle such as a passenger car, it is possible to secure the flip-up of the seat that does not come into contact with or interfere with the on-board equipment, so that a slide seat with excellent versatility can be easily obtained. Then, if the slide end position of the slide rail 26 with respect to the guide rail 28 is set as the flip-up possible position of the seat 12, the position can be easily clarified, and this enables easy setting. Also from the point of view, the operability when the seat is flipped up is improved.

By the way, in the embodiment of the present invention, since the strap 50 is linked to the cam lever 44 which is held in the locked position when the lock is released, when the lock means 20 is unlocked, as shown in FIG. As shown in A)-(C), the strap will be held in the unlocked or towed position. That is, according to this configuration,
When the locking means 20 is in the unlocked state, that is, when the seat 12 is in the flipped-up state, the link 52 is the tip 52.
Since a is inserted and inserted into the rotation ensuring hole 66 and held at the rotation position, even if the seat slide device 14 tries to slide the seat forward, the engagement of the link tip with the peripheral edge of the rotation ensuring hole is prevented. In this case, the slide of the slide rail 26 with respect to the guide rail 28 is restricted.

As described above, according to the present invention, the slide of the seat 12 after the flip-up is reliably regulated, so that the contact and the interference between the seat and the on-vehicle equipment due to the slide after the flip-up are surely performed. It is possible to prevent the deterioration of the appearance quality of the on-vehicle equipment and the seat from this point as well.

In the embodiment of the present invention,
Although the arrangement position of the locking means 20 is embodied as the rear portion of the lower surface of the seat cushion 16, it is sufficient if the seat 12 can be held at the seating position under the engagement with the striker 38 of the slide rail, and therefore, it is limited to this. However, the locking means and the striker may be arranged at an intermediate position between the front end and the rear end, for example.

Further, in the embodiment of the present invention,
The link connecting end 52b of the link is linked to the strap 50, but the link 52 is not limited to this, as long as the link 52 can rotate in association with the unlocking operation of the locking means 20, and it is not limited to this. The link may be connected to the movable member of the locking means such as 44 and the latch 34. However, if the strap 50 is used, whether or not the link 52 can be rotated is directly transmitted to the strap through the connecting wire 56, so that the operator of the strap can surely recognize the possibility. Therefore, from this point as well, the seat 12
The operability when flipping up is improved.

Further, here, the strap 50 is locked by a locking means.
Although it is embodied as a lock releasing member for 20, the present invention is not limited to this, and for example, a rotating lever or the like may be used as the lock releasing member.

Here, as can be seen from FIGS. 1 (A) to 1 (C), in the embodiment of the present invention, the release restricting plate 64 is formed with a substantially inverted U-shaped portion 64a at the tip portion. And the substantially U-shaped portion 68 that can be engaged with the substantially inverted U-shaped portion.
The engagement plate 68 having a at the tip is the striker.
It is fixed to the slide rail 26 in the vicinity of the alignment position with the 38 and the like.

With this structure, at the seated position of the seat 12 or the like, even if an excessive load acts in the flip-up direction on the seat cushion 16, such as an emergency load,
By engaging the substantially inverted U-shaped portion 64a and the substantially U-shaped portion 68a,
Since excessive rotation of the seat in the flip-up direction can be prevented, the safety of the seat having the flip-up function in an emergency is further improved.

Although the slide-up restraint structure of the slide seat of the present invention is suitable for seats of automobiles and the like, it is not limited to this, and other vehicles such as trains, airplanes,
The present invention may be applied to a seat of a ship or the like.

The above-described embodiments of the present invention are for explaining the present invention, and do not limit the present invention in any way, and may be modified or modified within the technical scope of the present invention. It goes without saying that all are included in this invention.

[0046]

As described above, according to the flip-up restricting structure of the slide seat according to the present invention, the flip-up of the seat is impossible except the flip-up possible position where the links are aligned with the rotation ensuring holes. Therefore, it is possible to easily secure the seat bounce without coming into contact with or interfering with the on-board equipment located in front of the seat, etc.
Further, it is possible to easily and surely prevent the deterioration of the appearance quality of the sheet.

Then, if the unlocking operation of the latch is performed at the seat flip-up position defined by this,
Since the seat bounce can be reliably and easily performed without being hindered by the on-board equipment, the certainty of the operation is improved.

Further, the link of the slide rail is linked so as to be interlocked with the lock release operation of the lock means by the lock release member, and the release restricting plate provided with the rotation ensuring hole for ensuring the rotation of the link is provided. Since it is sufficient to provide it on the guide rail, without complicating the configuration,
The position where the seat can be flipped up can be limited.

Therefore, it is easy to improve the functionality of the seat by adding the flip-up function to the slide function without deteriorating the operability and the appearance quality of the on-vehicle equipment, the seat, etc., and without complicating the structure. Can be secured.

Since the lock releasing member is connected to the movable member which is held at the lock releasing position when releasing the lock, when the seat is flipped up by inserting and interposing the tip of the link into the rotation ensuring hole. Seat slides are restricted. Therefore, the sliding of the seat after the flip-up can be reliably regulated, and the contact and interference between the seat and the on-board equipment caused by the slide after the flip-up can be prevented, and from this point as well, the appearance of the on-board equipment and the seat can be improved. Quality deterioration can be reliably prevented.

[0051]

Further, under the connection with the unlocking member,
Since the link can be operated in synchronization with the lock releasing operation, whether or not the link can be rotated is directly transmitted to the lock releasing member via the connecting wire. Therefore, the operator of the unlocking member can be surely recognized as to whether or not the unlocking member can be operated, so that the operability when the seat is flipped up is improved.

[Brief description of drawings]

FIG. 1 is a front view of a flip-up restricting structure for a slide seat according to the present invention in an initial state at a seat flip-up possible position, a schematic vertical cross-sectional view taken along line AA of the front view, and a rear view. Is.

FIG. 2 is a schematic side view of a slide sheet having a flip-up function.

3A and 3B are a front view and a schematic vertical cross-sectional view similar to FIG. 1 of the front view of a flip-up restricting structure of a slide seat at the time of unlocking at a seat flip-up possible position, and a rear view.

FIG. 4 is a front view of a bounce-up restricting structure of a slide seat in a bounce-up restricted state at a seat-bounce-disabled position, and a schematic vertical sectional view similar to FIG. 1 of this front view;
It is also a rear view.

[Explanation of symbols]

10 Slide sheet flip-up control structure 12 sheets (slide sheet) 14 Seat slide device 20 Locking means 34 Latch 38 striker 44 Cam lever 50 Strap (lock release member) 52 links 56 connecting wire 64 Release restriction plate 66 Rotation security hole

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kenji Shibata Inuyama City, Aichi Prefecture Kakihata Ichibanchi Imasen Electric Works Co., Ltd. (72) Inventor Masaaki Yokota 3-12 Matsubaracho, Akishima-shi, Tokyo Stock company In Tachi-S (56) Reference JP-A-9-123808 (JP, A) JP-A-9-123809 (JP, A) Jikkoku 1-21865 (JP, Y2) Jikkoku 5-7074 (JP, Y2) ) Utility model registration 2520783 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60N 2/00 -2/72

Claims (3)

(57) [Claims] 1. A slide seat in which a seat that can be folded under a seat back with respect to a seat cushion is slidably supported by a seat slide device having a combination of slide rails and guide rails, A front end of the seat cushion having a first hinge, which is a center of rotation of the seat back, at a rear portion thereof is connected to the slide rail of the seat slide device via a second hinge so as to be able to flip up to a front inverted position. When the seat cushion is seated, the seat cushion can be held in the seated position by the locking of the locking means having the latch engageable with the striker of the slide rail, and the link pivotally mounted on the slide rail can be unlocked. This lock can be synchronized with the unlocking operation of the locking means. The release restricting plate, which is connected to the movable member of the step so that it can be interlocked and has a rotation ensuring hole for ensuring the rotation of the link in a predetermined portion, is fixed to the guide rail of the seat slide device, so that The unlocking operation itself of the unlocking member at a position other than the aligned position of the link to the motion protection hole is restricted by the rotation of the link by the engagement of the link with the release restricting plate.
A structure to prevent the sliding seat from flipping up when the locking mechanism is unlocked. 2. A slide seat in which a seat that can be folded under a seat back with respect to a seat cushion is slidably supported by a seat slide device having a combination of a slide rail and a guide rail, A front end of the seat cushion having a first hinge, which is a center of rotation of the seat back, at a rear portion thereof is connected to the slide rail of the seat slide device via a second hinge so as to be able to flip up to a front inverted position. When the seat cushion is seated, the seat cushion can be held in the seated position by the locking of the locking means having the latch engageable with the striker of the slide rail, and the link pivotally mounted on the slide rail can be unlocked. This lock can be synchronized with the unlocking operation of the locking means. The seat slide is provided with a release regulating plate that is interlockingly connected to a movable member that is held in the unlocked position when unlocking the step, and that has a rotation ensuring hole in a predetermined portion that ensures rotation of the link. By fixing to the guide rail of the device, the lock releasing operation itself of the lock releasing member other than the aligned position of the link to the rotation ensuring hole can be prevented from being rotated by the engagement of the link with the release regulating plate. With this, the slide-sheet flip-up restriction structure was disabled when the locking mechanism was unlocked. 3. The strap as an unlocking member for the locking means is linked to a movable member, which is held at the unlocked position when unlocked, through a connecting wire so that the link can be linked. As opposed to
The flip-up restricting structure for a slide sheet according to claim 1 or 2, wherein the structure is connected so as to be interlocked with each other via a connecting wire different from the movable member of the locking means.