JP3287453B2 - Locking device for jumping seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a second seat such as a one-box vehicle and a jumping seat such as a third seat.

[0002]

2. Description of the Related Art Conventionally, when a seat is not used, the seat cushion is lifted forward or sideward around one bottom of the seat cushion when the seat is not used, so that the seat installation location on a vehicle floor can be effectively used as a loading platform. There are things to use.

[0003] The seat is mounted on a vehicle floor so as to be movable in the front-rear direction by a slide rail for adjusting the front-rear position of the seat, and a seat cushion is attached to a hook which is rotatably mounted on an upper rail on the seat side of the slide rail. The seat is locked to the upper rail by engaging a striker provided at the bottom of the seat.

[0004] Then, the seat is jumped up at a predetermined front and rear position, so that the seat installation location can be effectively used, and the jumped up seat is folded on a wall surface or the like at a predetermined position of the vehicle body.

[0005]

However, in the conventional product, the seat can be locked to the upper rail at any point in the lower rail of the slide rail (for example, at the front end, middle, rear end, etc. in the longitudinal direction of the lower rail). , So that it can be unlocked.

[0006] Therefore, there is a problem that the sheet cannot be jumped up at a predetermined location because the sheet jumping position is not constant.

SUMMARY OF THE INVENTION It is an object of the present invention to specify a jumping position of a sheet at a predetermined position and to secure a locked state by a hook.

[0008]

According to a first aspect of the present invention, there is provided a lock device for a flip-up seat, wherein the striker is rotatably mounted on the upper rail so as to be rotatable in the same direction as a hook. A lock piece that supports the hook in the upright direction of the hook in the upright direction by a spring elasticity, and a release plate that slides in the front-rear direction by the operating lever, and a predetermined position at the bottom of the lower rail at each lower part of the hook and the lock piece. A stopper portion that is rotatably inserted into the through hole that is opened at the extension is provided, and on the upper part of the lock piece,
The release plate for engaging a pin provided on the hook with an operation force of an operation lever to rotate the hook in a falling direction is connected.

The hooks and the lock pieces are rotatable by engaging the respective stopper portions of the hooks and the lock pieces with the through holes opened at the bottom of the lower rail, and the rotation locks and unlocks the striker. Then, in the places other than the through holes, the stoppers are joined to the bottom of the lower rail, so that they cannot be rotated.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, as shown in FIG. 5, the jumping sheet is slidably connected to a slide rail (R) provided on the wall surface (W) side of the vehicle body, and one side is attached so as to be able to jump up by a hinge (not shown). A leg (90) is integrally provided at the bottom of the other side, and a substantially U-shaped striker (9) is protruded from the rear side of the leg (90).

The striker (9) is provided on the upper rail of the slide rail on which the leg (90) is placed by engaging with an engagement hole (71) opened in the top plate (70) of the upper rail. Locked by the hook.

In the figure, (SC) is a seat cushion, and (S)
(B) is a seat back, (8) is a lower rail embedded in the vehicle body (F), and the opening of the lower rail (8) is closed by a cover (8A) with a slit.

FIG. 2 is an exploded view of the upper rail (7) and the lower rail (8) having the device of the present invention. The upper rail (7) is a vertical runner (7A) that slides in the lower rail (8). A top plate (70) made of a horizontal plate is welded to the top, and rollers (73) are arranged in front of and behind the runner (7A). 70) shows a projection to be welded.

At the rear part of the runner (7A), a supporting piece (61) is integrally fastened to a bent part (62) having a U-shaped part by bolts (63) and (63). A hook (1), a lock piece (4), and an arm (3) are provided between the bent portion (62) and the support piece (61), and a release plate (2) is connected to the lock piece (4). ing.

The hook (1) is attached to the rotating shaft (51), the lock piece (4) is attached to the stop shaft (53) juxtaposed to the rotating shaft (51),
Each is rotatably mounted on a shaft, and the arm (3) is a stop shaft (53).
And one end of the stop shaft (53) is attached to a spring (5).
4) is latched, and the arm (3) is urged counterclockwise in FIGS. 2 and 3 by the elastic force of the spring (54).

In the figure, reference numeral (12) denotes a rotary shaft (51) insertion hole provided in the hook (1), (45) denotes a stop shaft (53) insertion hole provided in the lock piece (4), and (35) denotes an arm ( 3) shows fixing holes for integrally fixing the arm (3) to the stop shaft (53) through the stop shaft (53).

As shown in FIG. 2, the hook (1) is turned up in the rearward direction (clockwise in FIGS. 2 and 3) to stand up, engage the striker (9), and turn in the opposite direction. Thereby, as shown in FIG. 3, the engagement state (lock state) with respect to the striker (9) is released and stored in the top plate (70) of the upper rail (7).

The hook (1) has an engagement recess for a striker (9) on the rear edge side thereof.
A slot (11) is opened behind the slot (2).
A connection pin (32) inserted into a through hole (31) provided at the tip of the arm (3) is inserted into 1). Therefore, as described above, since the tip of the arm (3) is urged upward, the hook (1) is turned in the unlocking (retracting) direction and falls down.

The front end of the hook (1) has a recess (14) with which the lock portion (44) of the lock piece (4) engages.
Are provided, and in the locked state as shown in FIG.
The lock portion (44) of the lock piece (4) is joined to the recess (14) of the upright hook (1) to support the hook (1).

A stopper (13) for turning the hook is provided below the hook (1), and a stopper (43) for turning the lock is provided below the lock piece (4).
Each of the stoppers (13) (43) is a lower rail (8).
When it is located in the through holes (81) and (82) opened in the bottom portion (80) of the predetermined position (the sheet jumping position), it is formed to be able to penetrate into the through holes (81) and (82). ing.

Therefore, the stoppers (13) and (43) are inserted into the through holes (81) and (82) of the lower rail (8), so that the hook (1) and the lock piece (FIG. 3) are provided. (4) becomes rotatable. That is, the state from the locked state in FIG. 2 to the unlocked state in FIG. 3 or vice versa is performed only at a predetermined position of the lower rail (8).

Therefore, at locations other than the through holes (81) and (82), the stoppers (13) and (43) abut against the inner surface of the bottom (80) of the lower rail (8), and the hook (1)
The lock piece (4) cannot rotate and cannot be locked or unlocked.

When the release plate (2) is slid forward in the locked state shown in FIG. 2, an elongated hole (22A) formed in the bracket portion (22) of the release plate (2).
Since the pin (42) of the lock piece (4) engaged therein is pulled forward, the lock portion (44) of the lock piece (4) is disengaged from the concave notch (14) of the hook (1) and the hook (1). The pivot pin (10) provided in (1) is pulled by the hook (20) of the release plate (2). As described above, the elasticity of the spring (54) for urging the arm (3) always acts on the hook (1) in the falling direction.

Therefore, the hook (1) pivots in the falling direction and the lock piece (4) also pivots in the same direction as the hook (1), and each stopper portion (13) (43) is connected to the lower rail (8). It is inserted into the through holes (81) and (82), and the locked state is released as shown in FIG.

The slide portion (21) of the release plate (2) is guided by a guide piece (72) provided on the inner surface of the top plate (70), and the slide portion (21) is connected to the top plate (70). Is fixed to a mounting bracket (23) integral with a rod (24) connected to an operating lever (26) provided at the tip of the mounting bracket (23), and the mounting bracket (23) is urged rearward by a tension spring (25). In the figure, (27) is an operation lever, (26) is a storage bracket, (28) is a spring for retracting the bracket (27), and (71A) is a hook (1).
Are shown, respectively.

Next, the operation from the unlocked state to the locked state will be described. The hook (1) and the lock piece ( 4) is located in the state shown in FIG.

When the sheet in the flipped state is returned to the original state in this state, the striker (9) comes into contact with the pressing portion (3A) of the arm (3) from within the engaging hole (71) of the top plate (70). The end of the arm (3) is pushed down by the load of the sheet against the elasticity of the spring (54). As a result, as shown in FIG. 2, the hook (1) in the lying state is turned upright and the striker (9) pressing the arm (3) is engaged. The lock plate (4) has a release plate (2)
The locking portion (44) is engaged with the concave portion (1) of the hook (1) because the elasticity of the tension spring (25) for urging the hook (1) backward is acting.
4) to support the hook (1) in the locking direction.

In the engaged state (locked state) of the striker (9), the hooks (1) and the stopper portions (13) (43) of the lock piece (4) are connected to the through holes (8) of the lower rail (8).
1) Escape from (82) and located inside lower rail (8). Therefore, in the locked state, the upper rail (7) and the seat can be moved and adjusted in the front-rear direction of the lower rail (8).

In the figure, (3B) is a notch for restricting the rotation of the arm (3). When the turning pin (10) of the hook (1) abuts on the notch (3B), the arm (3) is moved. It is configured not to protrude upward.

[0030]

According to the present invention, since the lifting seat is locked and unlocked with respect to the slide rail only at a predetermined position of the lower rail fixed to the vehicle floor side of the slide rail, the seat is provided at a predetermined position. You can jump up to the place exactly.

In addition, in the locked state, the hook is supported by the lock pieces, so that the locked state is ensured. Further, the lock piece is detached from the hook via the release plate by the operation force of the operation lever, and the hook is directly rotated in the lock release direction by the release plate.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the device of the present invention.

FIG. 2 is a sectional view of a locked state.

FIG. 3 is a cross-sectional view of an unlocked state.

FIG. 4 is a cross-sectional view of FIG.

FIG. 5 is an explanatory view showing a use state of the device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hook 2 Release plate 3 Arm 4 Lock piece 7 Upper rail 8 Lower rail 9 Striker 13 Hook stopper part 43 Lock piece stopper part 81 Lower rail through-hole 82 Lower rail through-hole

Continued on the front page (72) Inventor Mitsuo Kamata 10-1, Amanuma, Hiratsuka-shi, Kanagawa Nissan Shatai Co., Ltd. (72) Inventor Yasuo Hirama 10-1, Amanuma, Hiratsuka-shi, Kanagawa Nissan Shatai Co., Ltd. (72) Invention Person Yoshihiko Yamauchi 771 Koen, Ayase-shi, Kanagawa Prefecture Ikeda Bussan Co., Ltd. (72) Inventor Masami Yonekura 771, Koen, Ayase-shi, Kanagawa Prefecture Ikeda Bussan Co., Ltd. No. 12 Tachi-S Co., Ltd. (56) References JP-A-9-123809 (JP, A) JP-A-9-58312 (JP, A) JP-A-9-150652 (JP, A) (58) Survey Field (Int.Cl. ⁷ , DB name) B60N 2/06-2/08 B60N 2/30-2/36

Claims (1)

(57) [Claims] An upper rail slidably fitted to a lower rail fixed to a vehicle floor side is provided with a hook which is slidably engaged with a striker on a seat side and is locked , and the hook is raised by a descending striker. What is claimed is: 1. A lock device for a flip-up sheet, which is engaged with a striker and is urged in an unlocking direction which is a falling direction by the elastic force of a spring, wherein the shaft is rotatably mounted on the upper rail in the same direction as a hook.
Standing direction of the hook in the engaged state of the striker
Lock piece that supports the hook with the elasticity of the spring
Release play slides back and forth by lever
And bets provided, each lower portion of the hook and the locking piece, and extends rotatably transmural interpolate stopper portion through hole having an opening in a predetermined position at the bottom of the front Symbol lower rail, the upper part of the locking piece, the operation A locking device for a flip-up sheet, wherein the release plate is connected to engage a pin provided on the hook by a lever operating force to rotate the hook in a falling direction.