JP2552042Y2 - Emergency lifting device for car seats - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency lifting device for a vehicle seat for preventing a occupant from moving forward instead of a seat belt in an emergency such as a collision.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, an automobile seat is composed of a seat cushion 1 and a seat back 2. A seat belt 3 is provided on the vehicle seat for holding the occupant from moving forward in an emergency such as a collision.

[0003]

However, when the seat back 2 is seated with the seat back 2 inclined greatly rearward, the seat belt 3 is hardly effective at the time of collision, and the occupant moves forward along the seat cushion 1. That is, since the seat belt 3 moves forward so as to pass under the seat belt 3, there is a problem that the seat belt 3 is caught on the neck of the seated person and is dangerous.

Accordingly, an object of the present invention is to provide a vehicle seat emergency elevating device which makes it difficult for a seated person to move forward in place of a seat belt in an emergency such as a collision.

[0005]

In order to solve the above-mentioned problems, the present invention is directed to a seat cushion having a support shaft attached to a rear portion thereof, the support shaft being supported by a bracket attached to an upper rail, and a seat cushion as a whole. The front part is supported swingably up and down around the rear part.
The buckle of the seat belt is supported swingably back and forth, and the buckle and the front of the seat cushion are connected to each other so that when the buckle swings forward at a predetermined angle or more, the front of the buckle is centered on the rear of the seat cushion. Is provided with a link mechanism for raising the pressure.

[0006]

[Effect of the Invention] In the present invention, the front portion of the seat cushion is supported by the bracket of the upper rail so that the front portion of the seat cushion can swing up and down, and the front portion of the seat cushion is always held at the lowered position. When the buckle swings forward at a predetermined angle or more due to the impact on the vehicle body and the seated person pulls the seat belt forward, the link mechanism raises the front part of the seat cushion centered on the rear part. It is. Therefore, the front part of the seat cushion is lifted, and the occupant is less likely to move forward, and the danger that the seat belt is caught on the occupant's neck is eliminated. Also,
When the collision force disappears and the buckle swings rearward, the front portion of the seat cushion is again held at the lowered position.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the automobile seat is composed of a seat cushion 11 and a seat back 12. Upper rails 13 of the seat slide device are arranged on both sides of the seat cushion 11. A bracket 14 is attached to the upper surface of the upper rail 13 so as to rise to face the side surface of the seat cushion 11.

[0009] Side rear portion 11 of the seat cushion 11
A support shaft 10 protruding laterally is attached to b, and a support hole (not shown) for rotatably supporting the support shaft 10 is provided at a rear portion of the bracket 14. The support shaft 10 supports the seat cushion 11 so that the front portion 11a can swing up and down about the rear portion 11b.

At the rear of the bracket 14, a bracket 16 of a buckle 15 for locking a tongue plate of a seat belt is supported by a pin 17 so as to be able to swing back and forth.
The bracket 16 of the buckle 15 and the front portion 11a of the seat cushion 11 are connected by a link mechanism 18.

The link mechanism 18 is connected to the bracket 1
4 has a long first link 19 extending in the front-rear direction along the front side of the bracket 1.
4 is pivotally mounted on a pin 20 so as to be vertically swingable. At the front of the first link 19, the lower part of the second link 21 is
The upper portion of the second link 22 is pivotally connected to the front side surface 11a of the seat cushion 11 with a pin 23.
A lower portion of the third link 24 is pivotally connected to a rear portion of the first link 19 by a pin 25, and an upper portion of the third link 24 is attached to an upper portion of the bracket 16 of the buckle 15 by a pin 26.
It is pivoted at.

With the above configuration, the buckle 15 is always in the rear swing position B, and the bracket 1 of the buckle 15
Since the first link 19 is counterclockwise turned by the third link 24 pulled upward at 6, and the second link 21 is pulled downward,
The front portion 11a of the seat cushion 11 is held at the lowered position D.

When the occupant pulls the seat belt 3 forward due to a collision or the like, the buckle 15 follows this and swings forward to the front swing position F at a predetermined angle or more. As a result, the third link 24 is pushed downward by the bracket 16 of the buckle 15, the first link 19 is turned clockwise, and the second link 21 is pushed upward, so that the front portion 11a of the seat cushion 11 is connected to the second link. As a result, the front part 11a is lifted up to the ascending position U (see the two-dot chain line), and the front part 11a obstructs the movement of the occupant. As a result, the occupant does not pass under the seatbelt, so that there is no danger of the seatbelt being caught on the occupant's neck. When the impact force disappears and the buckle 15 swings rearward to the rear swinging position B, the links 24, 19, and 21 return to the positions indicated by the solid lines, so that the front portion 11a of the seat cushion 11 returns to the lowering position D. Will be retained.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle seat provided with an emergency lifting device according to the present invention.

FIG. 2 is an exploded perspective view of the apparatus of FIG.

FIG. 3 is a perspective view of a conventional automobile seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Support shaft 11 Seat cushion 11a Front part 11b Rear part 13 Upper rail 14 Bracket 15 Buckle 18 Link mechanism

Claims (1)

(57) [Scope of request for utility model registration] A support shaft is mounted on a rear portion of a seat cushion, and the support shaft is supported by a bracket mounted on an upper rail, and a front portion of the entire seat cushion is supported on a rear portion so as to be vertically swingable. The buckle of the seat belt is supported by the bracket so as to be able to swing back and forth, and the buckle is connected to the front portion of the seat cushion so that the back portion of the seat cushion is swung when the buckle swings forward by a predetermined angle or more. A link mechanism for raising the front part around the center is provided.