JP2588771Y2 - Folding power seat device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding seat device, for example, a folding power seat device such as a third seat of a one-box car.

[0002]

2. Description of the Related Art In a conventional folding seat apparatus, when the seat is folded, a recliner is manually tilted forward, and then a locking hook provided at the other end of a seat portion is removed from a lock pin provided on a seat rail, and the seat is folded. When the whole is lifted up and locked by the vertical fixing link, and when returning, contrary to the above, after folding the locked fixed link, the entire seat is returned manually and locked by the locking hook and then the seat back It was common to have something to happen.

[0003]

The foldable sheet device of the prior art described above has a drawback that operability is poor because all the force required for folding is manually operated and the space is narrow.

SUMMARY OF THE INVENTION The present invention provides a folding power seat apparatus which is designed to fold a sheet by a series of operations by one geared motor to reduce the trouble of manual operation and to save space. It is.

[0005]

In order to achieve the above object, a folding power seat apparatus according to the present invention supports a front end of a seat cushion so as to be rotatable about a shaft, and is attached to a fixed bracket provided on a rear side and a seat back. The movable bracket is pivotally supported by a reclining device shaft, a sprocket is attached to each of the shaft and the reclining device shaft, and a chain is hung on both sprockets. The fixing bracket portion is provided with a locking means including a locking hook and a locking shaft that are disengaged and locked in a normal state with the seat back centered on the reclining device shaft, and are fixed to the fixed bracket portion. The bracket and the movable bracket are provided with a receiving member that abuts when the seat back is tilted forward. .

[0006]

The operation will be described first. First, the front end side of the seat cushion 2 is rotatably supported on the seat adjuster 1 and the fixed bracket 4 and the back seat 5 on the rear side are provided.
The movable bracket 6 mounted on the shaft is supported by a shaft 7 to constitute a reclining device.

Accordingly, in order to fold the seat, when the geared motor 19 is rotated, the rotation is performed by rotating the shaft 7 of the reclining device A from the sprocket 17 through the chain 18 via the gear train, thereby performing the reclining operation. Then, when the seat back 5 attached to the movable bracket 6 is tilted forward by a reclining operation, the operation piece 14 attached to the movable bracket 6 bears on the fixed bracket 6. Arm 13 attached to one end of the hook shaft 9
The locking hook 11 attached to the other end of the hook shaft 9 is rotated, and the hook 11 is locked from the shaft 10 locking the locking hook 11 locked to the locking shaft 10. Is released and the operation is continued, the receiving members 4a and 6a provided at the corresponding portions of the fixed bracket 4 and the movable bracket 6 of the reclining device A abut against each other to stop the rotation and enter the locked state. Therefore, in the locked state, the chain 18 does not move and the rotation of the gear 16 is stopped. Subsequently, the force from the geared motor 19 causes the gear 16 to rotate, and the geared motor 19 is fixed to the fixed rail side. In this startup state, a series of operations is stopped by a limit switch (not shown).

Next, the return operation for returning from the starting state to the original state is as follows.
The reverse operation of the above operation is performed. This series of operations is operated by pressing a switch (not shown) of the driver's seat deeply once (one touch). In addition to the series of operations, the angle of the seat back is adjusted by lightly pressing an appropriate amount of the switch. Is done.

[0009]

FIG. 1 shows a folding power seat apparatus according to the present invention. An embodiment of the present invention will be described below with reference to this figure.

FIGS. 1 to 6 show a first embodiment, in which 1 is a seat adjuster including a fixed rail a and a movable rail b.
The seat adjuster 1 receives the seat cushion 2. A fixed bracket 4 is attached to the rear side of the seat cushion 2, and a reinforcing piece 3 is provided on the fixed bracket 4. The fixed bracket 4 and the movable bracket 6 attached to the seat back 5
The reclining device A, which is supported by the shaft 7 of the reclining device A by a differential reduction mechanism that relatively swings and rotates with the rotation of the eccentric shaft having the eccentric portion, is the eccentric shaft
A sprocket 8 is attached to one end of the shaft 7. The fixed bracket 4 is provided with a rotatable hook shaft 9. One end of the hook shaft 9 is provided with a locking hook that is attached to one end of the seat adjuster 1 and is separated from a lock shaft 10 that protrudes in the lateral direction. 11 and the hook shaft 9
A spring 12 for urging the lock hook 11 toward the lock shaft 10 and one end of an arm 13 for transmitting rotation to the hook shaft 9 are fixed to the other end of the arm. Further, one end of an operation piece 14 corresponding to the arm piece 13 fixed to the hook shaft 9 is attached and fixed to the movable bracket 6 side of the reclining device A, and the operation is performed when the movable bracket 6 falls forward by the reclining operation. The arm 13 is pressed and rotated by the piece 14, and accordingly, the hook shaft 9 is rotated against the spring 12, and the locking hook 11 is rotated. Release the lock of 10.

A shaft 15 rotatably supported by a bearing on the seat adjuster 1 is provided at the tip end of the seat cushion 2 so that the seat cushion 2 can be rotated about the shaft 15. is there. The shaft 15 has a gear 16
The sprocket 17 is attached to the sprocket 8 attached to the shaft 7 of the reclining device A by using a chain 18 to transmit rotation.

The gear 16 is provided with a pinion 2 from a geared motor 19 fixed to the seat adjuster 1 side.
A pinion 23 attached to a shaft 22 of a gear 21 that meshes with
The gear train transmits the rotation of the geared motor 19 to the shaft 7 via the sprockets 17 and 8.

The fixed bracket 4 and the movable bracket 6 are provided with receiving members 4a and 6a, respectively.
Is provided at the corresponding position to receive when the vehicle is moved forward.

FIG. 7 shows another embodiment, in which a pinion 24 meshes with the gear 16 of the first embodiment, and the pinion 2
A sprocket 26 is fixedly provided on the shaft 25 of No. 4 and a chain 18a is hung on the sprocket 26 and the sprocket 8 attached to the shaft 7, and a pinion 24 and a sprocket 26 meshing with the gear 16 are added. Things
That is, by adding a gear train and changing the position of the sprocket, the force applied to the chain is reduced.

[0015]

[Effects of the Invention] A folding seat is provided with a reclining mechanism and a seat rising mechanism, and a foldable seat is driven by a gear train and a chain by one geared motor fixed to a seat adjuster (on the vehicle body side). The return operation is performed by motorization, so there is no need to worry about the work due to man-made work, and there is no space requirement.In addition, the speed can be changed by changing the gear train from the geared motor and changing the position of the sprocket. The effect is that not only can the weight be reduced, but also the power can be reduced and the chain can be reduced in weight.

[Brief description of the drawings]

FIG. 1 is a side view of a third seat according to the present invention when a folding seat is used.

FIG. 2 is a side view when the seat back is reclined from FIG. 1 and the seat back is moved forward.

FIG. 3 is a side view showing a state where the entire seat is started up by a start-up mechanism from FIG. 2;

FIG. 4 is a partially enlarged view of FIG. 1;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a partially enlarged view of FIG. 2;

FIG. 7 is a side view of a folding sheet according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat adjuster 2 Seat cushion 3 Reinforcement piece 4 Fixed bracket 5 Seat back 6 Movable bracket 4a, 6a Receiving member 7 Reclining device shaft 8, 17, 26 Sprocket 9, 15, 22, 25 shaft 10 Lock shaft 11 Locking hook 12 Spring 13 Arm piece 14 Operation piece 16, 21 Gear 18, 18a Chain 19 Geared motor 20, 23, 24 Pinion A Reclining device

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60N 2/30 B60N 2/22

Claims (2)

(57) [Scope of request for utility model registration] 1. A front end of a seat cushion is rotatably supported by a shaft, and a fixed bracket provided on a rear side and a movable bracket mounted on a seat back are supported by a reclining device shaft to recline with the shaft. A sprocket is attached to each of the device shafts and a chain is hung on both sprockets, and the sprockets of the shaft communicate with a geared motor via a gear train, and the fixed bracket portion has the reclining device shaft as a shaft. A locking means comprising a locking hook and a lock shaft, which is disengaged with the forward movement of the seat back and is locked in a normal state, is provided, and the fixed bracket and the movable bracket abut against each other when the seat back is tilted forward. Power seat device provided with a receiving member to be folded. An unlocking mechanism provided on the seat-side fixing bracket, an arm piece provided on a rotatable hook shaft having a locking hook fixed to one end thereof, and an operating piece provided on the movable bracket side of the reclining device. A lock shaft provided on the seat adjuster side corresponding to the hook, and a spring provided on the other end of the hook shaft, and with the rotation of the movable bracket, an operation piece mounted on the movable bracket side is provided. 2. The method according to claim 1, wherein the arm piece fixed to the hook shaft is pressed to rotate the hook shaft, and the locking hook fixed to one end is rotated to be disengaged from the lock shaft. A folding power seat device as described.