JP2002211290A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flip-up type vehicular seat capable of releasing a seat lock and forwardly flipping up in a state that a lock of a reclining device is released and a seatback is forwardly folded, and improving operability in a forwardly flipping-up operation. SOLUTION: A lock releasing lever 50 is provided in the reclining device 30, and a lock of the reclining device 30 is released by the operation of the lock releasing lever 50. Plural link arms 32, 42, 43, 44 work in relation to release a lock of a double fold device 40 while interlocking with lock releasing of the reclining device 30, thereby improving operability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat suitable for a second seat or the like in a vehicle having three rows of seats, such as a wagon, and a seat back is tiltably attached to a seat cushion via a reclining device. In addition, the seat back is tilted forward in the form of a table via the two-stage folding device, the cushion lock of the seat cushion is released, and the seat can be flipped forward based on the front end hinge of the seat. About.

[0002]

2. Description of the Related Art For example, in a wagon car or the like, many seats are installed in three rows of a first seat, a second seat, and a third seat so that a large number of people can board.
As shown in the figure, the second seat 1 has a seat back 1b attached to a seat cushion 1a, and the seat back 1b can be adjusted to a desired reclining angle by operating the recliner 2. A slide rail 3 is attached to the lower surface of the seat cushion 1a. The slide rail 3 slides in the front-rear direction of the vehicle via a lower rail fixed to the vehicle floor and a slide mechanism with respect to the lower rail. It consists of an upper rail that can be used.

[0003] The slide rail 3 can be jumped forward by using the front end of the slide rail 3 as a hinge portion 4, and the slide rail 3 is fixed to a vehicle floor via a cushion lock 5.

[0004] By the way, when getting on and off the third seat, the second seat 1 is lifted forward to secure a space in order to secure a space for getting on and off. As shown in FIG. 6, the reclining device 2 includes a base plate 2
The intermediate plate 2b is rotatably mounted on the intermediate plate 2b of the reclining device 2 with respect to the intermediate plate 2b of the reclining device 2 around the upper hinge portion b. Mounted movably.

[0005] In order to lift the second seat 1, first, the operating lever 2c of the reclining device 2 is operated, and although not shown in FIG.
To fall forward. Then, after the reclining device 2 is set to the first-stage lock position, the lock of the two-stage folding device 6 is released by operating the two-stage folding lever 6a, and then the two-stage folding device 6 based on the upper hinge portion b.
To the intermediate plate 2b of the reclining device 2 in a counterclockwise direction in FIG.
To the table state. Thereafter, the cushion lock 5 is released, and the jumping operation is performed.

[0006]

As described above, the conventional 3
To make the second seat 1 and the like in the row seat vehicle jump upward, the operation lever 2c of the reclining device 2 was operated, and the intermediate plate 2c was tilted forward with respect to the base plate 2a based on the lower hinge portion a. Later, the reclining device 2 is set to the first-stage lock position,
Then, after operating the two-stage folding lever 6a to move the two-stage folding device 6 and the seat back 1b forward, the four operations of releasing the cushion lock 5 are required, and the operation is very troublesome. Has been pointed out.

Further, for example, when an occupant sitting on a third seat lifts the second seat 1 or the like, it is very difficult to operate the operation lever 2c of the reclining device 2 or the two-stage folding lever 6a, and the operation is smooth. At the same time, it has been pointed out that a simple operability cannot be expected.

It is an object of the present invention to provide a lift-up type vehicle seat particularly suitable for a second seat of a wagon car, etc.
It is an object of the present invention to provide a vehicle seat excellent in operability that can simplify a series of operations for flipping a seat forward from a forward-back operation of a seat back and that can be easily operated by an occupant such as a third seat.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a vehicle seat according to a first aspect of the present invention has a structure in which a seat back is attached to a seat cushion via a reclining device. It is mounted to be tiltable, and the seat back is tilted forward through a two-fold device to release the cushion lock of the seat cushion, and the seat can be flipped forward based on the front end hinge of the seat. In the vehicle seat, an operation plate having operation pins is fixed to a base plate of the reclining device, a first link arm is rotatably supported on an intermediate plate rotatable with respect to the base plate, and an upper stage with respect to the intermediate plate The two-stage folding device rotatably supported via a hinge shaft includes the first
The second link arm and the third link arm that are linked to the link arm are mounted, and the locking pin of the third link arm is slidably fitted in the guide hole of the fourth link arm, and the lock release lever is operated. Then, when the intermediate plate is tilted forward by a predetermined angle with respect to the base plate, the lower end of the first link arm is pressed by the operation pin of the base plate, and the first link arm, the second link arm, and the third link arm are linked to each other. Then, the locking pin slides along the guide hole of the fourth link arm,
The lock of the two-stage folding device is released, and the seat back is folded into a table via the two-stage folding device.

According to the vehicle seat of the first aspect, when the lock release lever is operated, the reclining device rotates the intermediate plate forward by a predetermined angle with respect to the base plate, and is supported by the intermediate plate. The lower end of the first link arm is pressed by an operation pin fixed to the base plate, and the first link arm rotates in the direction opposite to the direction of rotation of the intermediate plate.

The second link arm, which is connected to the first link arm by rivets, rotates in the opposite direction to the first link arm, so that the third link arm moves the upper end of the second link arm. The fourth link arm is pivotally rotated based on the device lock release pin, by the locking pin provided at the end of the third link arm sliding along the guide hole of the fourth link arm. As it moves, the two-stage folding device is unlocked,
The two-stage folding device and the seat back are moved forward to make the seat back a table.

In addition, the unlocking of the reclining device and the unlocking of the two-stage folding device can be operated using the same unlocking lever, and the single operation of the unlocking lever allows the unlocking of the reclining device to be linked with the unlocking operation. Conventionally, since the unlocking of the step-breaking device can be performed, conventionally, it is necessary to perform a four-
Although an operation was necessary, two operations of the operation of the lock release lever and the release of the cushion lock are sufficient, and the operability can be improved.

Further, since the plurality of link arms are linked and operated by simply operating the lock release lever, the stroke amount of the lock release lever can be reduced, and the seat back can be reliably moved forward with less labor. be able to.

According to a second aspect of the present invention, the vehicle seat is a second seat of a three-row seat vehicle, and the lock release lever is provided at a rear side of the reclining device, and a tip end thereof is provided. It is characterized by facing the third seat.

According to the vehicle seat of the second aspect, since the tip of the unlocking lever is provided at the rear side of the reclining device toward the third seat, the unlocking lever sits on the third seat. Even the occupants can operate it easily.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a vehicle seat according to the present invention will be described in detail with reference to the drawings. 1 to 4 show an embodiment in which the vehicle seat according to the present invention is applied to a second seat in a three-row seat vehicle such as a wagon vehicle. FIG. 1 shows a seat in which a seat cushion and a seat back in the second seat are removed. FIG. 2 is an explanatory view showing the configuration of a reclining device and a two-stage folding device applied to the second seat, and FIGS. 3 and 4 are explanatory views showing a forward operation of the second seat. .

FIG. 1 shows a mechanical portion of a second seat 10 to which the present invention is applied. A seat cushion (not shown) on which an occupant sits is supported by a seat slide device 20. This seat slide device 20
A lower rail 21 provided on the inner side and the outer side, and mounted on the floor of the vehicle; an upper rail 22 which slides forward and backward with respect to the lower rail 21 to support a seat cushion (not shown); It is composed of

The lower rail 21 can be lifted forward based on the hinge bracket 23 at the front end. When the occupant is seated, the lower rail 21 has a latch 24 on the inner side and a hook 25 on the outer side. It is provided so as to be lockable with a mounting portion such as a striker. The lock of the latch 24 and the hook 25 is released by operating the operation lever 26. The operation of the operation lever 26 is performed by a release rod 26a extending left and right.
The operation is performed by operating the driving units (not shown) of the latch 24 and the hook 25 via the.

The rear side of the upper rail 22 is connected to the seat back frame 11 via a reclining device 30, a two-stage folding device 40. The occupant can obtain a desired backrest angle by tilting the seat back frame 11 by a predetermined angle by the operation of the reclining device 30.

In order to operate the entire second seat 10 to jump forward, the two-stage folding device 40 is unlocked and the seat back frame 11 is tilted forward by approximately 90 ° to form a table as described above. The lock of the latch 24 and the hook 25 may be released, and the second seat 10 may be lifted up based on the hinge bracket 23.

In the second seat 10 according to the present invention, the operation of tilting the seat back forward by approximately 90 ° to bring the seat back to the table state can be performed by a simple operation, and the operation from the third seat side is also easily performed. The feature is that it is made easier to use.

That is, the configuration of the reclining device 30 and the two-stage folding device 40 will be described with reference to FIG. 2. The reclining device 30 is disposed at an intermediate position with respect to a base plate 31 attached to the seat cushion side, based on a lower hinge portion A. A plate 32 is rotatably mounted, and an operation piece 33 and an operation pin 34 for linking the reclining device 30 and the two-stage folding device 40 are mounted on one surface of the base plate 31. I have.

An unlocking lever 50 is attached to the reclining device 30. When the unlocking lever 50 is pulled upward, the locked state of the base plate 31 and the intermediate plate 32 is released, and an urging spring (not shown) is provided. Accordingly, the intermediate plate 32 rotates counterclockwise in the drawing forward with respect to the base plate 31 based on the lower hinge portion A. A first link arm 35 is rotatably mounted on the intermediate plate 32 by a rivet 35a, and a lower end 35b of the first link arm 35 is in contact with an operation pin 34 on the base plate 31 side.

Next, as a configuration of the two-stage folding device 40, a folding plate 41 fixed to the side portion of the seat back frame 11 is rotatably mounted on the intermediate plate 32 based on the upper hinge portion B. The folding plate 41 is provided with three types of link arms: a second link arm 42, a third link arm 43, and a fourth link arm 44.

The second link arm 42 is provided with a rivet 42 at the same position as the upper hinge portion B of the folding plate 41.
a, the first link arm 35
The second link arm 4 is inserted into the insertion hole 35c provided on the upper end side of the
The second pin 42b is inserted, and the first link arm 35 and the second link arm 42 are connected. Further, the upper end of the second link arm 42 is connected to the lower end of the third link arm 43 by a rivet 42c. Are joined.

A locking pin 43 a provided at the other end (upper end side) of the third link arm 43 is
The fourth link arm 44 is rotatably supported by a two-stage bent device lock release pin 44b. Reference numeral 45 denotes a stopper for preventing the third link arm 43 from breaking.

The reclining devices 30 and 2
As described above, the step folding device 40 includes the first link arm 35, the second link arm 42, and the third link arm 4 on one side of the intermediate plate 32 and the folding plate 41.
Third, the fourth link arm 44 is operably connected.

In the normal seating state shown in FIG. 2, the locking pin 43a of the third link arm 43 is located at one end of the guide hole 44a of the fourth link arm 44.
Since the link arm 44 is supported at an angle of approximately 45 ° and the fourth link arm 44 is inclined at an angle of approximately 45 ° by the locking pin 43a, the folding plate 41 is securely held in an upright state. .

Next, the link arms 35, 42, 4
The operation of 3, 44 will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, if the lock release lever 50 is pulled up to unlock the lock unit (not shown) of the reclining device 30, The intermediate plate 32 rotates clockwise in FIG. 3 with respect to the base plate 31 based on the lower hinge portion A.

At this time, the lower end 35b of the first link arm 35 supported by the intermediate plate 32 is pressed by the operating pin 34 provided on the base plate 31, and
The link arm 35 rotates counterclockwise in FIG. 3 based on the rivet 35a, and is linked thereto, so that the second link arm 42 on the two-stage folding device 40 side rotates clockwise based on the upper hinge portion B. By rotating in the rotation direction, the joint between the second link arm 42 and the third link arm 43 rises,
The link arm 43 is lifted upward, and the locking pin 43a of the third link arm 43 remains at one end of the guide hole 44, but the fourth link arm 44 is turned around the unlock pin 44b. Rotate clockwise.

The locking pin 43 of the third link arm 43
a slides in the guide hole 44a of the fourth link arm 44 toward the other end, whereby the folding plate 41 of the two-stage folding device 40 rotates counterclockwise based on the upper hinge portion B. Then, the two-stage folding device 40 is locked in a state where it has been moved forward by 90 ° in a substantially horizontal shape (see FIG. 4).

By simply operating the unlock lever 50, the unlocking of the reclining device 30 and the unlocking of the two-stage folding device 40 can be performed in an interlocked manner, and the seat back can be easily made into a table. Conventionally, four operations were required to move the seat forward, but the operability can be greatly improved because the second seat 10 can be brought forward by two operations of the operation of the lock release lever 50 and the operation of releasing the cushion lock. There is an advantage that can be.

Further, the lock release lever 50 is provided on the rear side of the reclining device 30 so that its tip is directed rearward (third seat side), so that the occupant sitting on the third seat can operate the lock release lever 50 when operating. Can be operated easily, and usability can be improved.

[0034]

The above is the embodiment of the vehicle seat according to the present invention. According to the vehicle seat according to the first aspect of the present invention, when the lock release lever is operated, the reclining device is mounted on the base plate. The intermediate plate rotates forward by a predetermined angle with respect to the first link arm, and the lower end of the first link arm supported by the intermediate plate is pressed by an operation pin fixed to the base plate. The third link arm pivots in a direction opposite to the pivot direction, and the second link arm connected to the first link arm by a rivet pivots in the opposite direction to the first link arm. By rotating based on the upper end of the second link arm, the locking pin provided at the tip of the third link arm slides in the guide hole of the fourth link arm, thereby causing the fourth link arm to slide. As the arm pivots based on the two-stage folding device unlocking pin, the two-stage folding device is unlocked, and the two-stage folding device and the seat back are moved forward and the seat back becomes a table. Becomes

The unlocking of the reclining device and the unlocking of the two-stage folding device can be operated by using the same unlocking lever, and the single operation of the unlocking lever allows the unlocking of the reclining device to be linked with the unlocking operation. Conventionally, since the unlocking of the step-breaking device can be performed, conventionally, it is necessary to perform a four-
Although an operation is required, two operations of the operation of the lock release lever and the release of the cushion lock are sufficient, and the operability can be improved.

Further, since the plurality of link arms are linked and operated only by operating the lock release lever, the stroke amount of the lock release lever can be reduced, and the seat back can be reliably moved forward with less labor. This has the effect of being excellent in usability.

According to the vehicle seat according to the second aspect of the present invention, since the tip of the unlocking lever is provided at the rear side of the reclining device toward the third seat, the unlocking lever is seated on the third seat. This has the effect that even an occupant can easily operate.

[Brief description of the drawings]

FIG. 1 is an overall view showing a seat mechanism in an embodiment in which a vehicle seat according to the present invention is applied to a second seat of a three-row seat vehicle.

FIG. 2 is an explanatory view showing a configuration of a reclining device and a two-stage folding device in the second seat shown in FIG. 1;

FIG. 3 is an explanatory view showing an unlocking operation of the two-stage folding device shown in FIG. 2;

FIG. 4 is an explanatory view showing an unlocked state of the two-stage folding device shown in FIG. 2;

FIG. 5 is a side view showing a conventional flip-up vehicle seat.

FIG. 6 is a side view showing a reclining device and a two-step folding device in a conventional flip-up type vehicle seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Second seat 20 Seat slide device 21 Lower rail 22 Upper rail 23 Hinge bracket 24 Latch 25 Hook 26 Operation lever 30 Reclining device 31 Base plate 32 Intermediate plate 33 Operation piece 34 Operation pin 35 First link arm 40 Two-stage folding device 41 Folding plate 42 second link arm 43 third link arm 44 fourth link arm 50 lock release lever A lower hinge B upper hinge

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Ryo Isomura 771 Kozono, Ayase-shi, Kanagawa F-term in Ikeda Bussan Co., Ltd. (Reference) 3B087 BA02 BB02 BD01 BD03 CA12

Claims (2)

[Claims] 1. A seat back is tiltably mounted on a seat cushion via a reclining device, and the seat back is tilted forward into a table via a two-step folding device to release a cushion lock of the seat cushion. An operation plate having operation pins is fixed to a base plate of the reclining device, and the intermediate plate is rotatable with respect to the base plate. A two-stage folding device in which a first link arm is rotatably supported and rotatably supported on an intermediate plate via an upper hinge shaft includes:
A second link arm and a third link arm that are linked to the first link arm are mounted, and a locking pin of the third link arm is slidably fitted in a guide hole of the fourth link arm to release the lock. When the lever is operated to tilt the intermediate plate forward by a predetermined angle with respect to the base plate, the lower end of the first link arm is pressed by the operation pin of the base plate, and the first link arm, the second link arm,
When the third link arms are linked to each other and the locking pins slide along the guide holes of the fourth link arm, the lock of the two-stage folding device is released, and the seat back is moved through the two-stage folding device. A vehicle seat, which is folded into a table shape. 2. The vehicle according to claim 1, wherein the vehicle seat is a second seat of a three-row seat vehicle, wherein the unlocking lever is provided at a rear side of the reclining device, and a tip of the unlocking lever is directed to the third seat side. 2. The vehicle seat according to 1.