JPH0526693B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is an automobile seat locking device that more reliably locks the movable seat on the stationary side of the vehicle when the automobile receives an impact due to a collision or the like. Regarding.

(Prior Art) Generally, a car is provided with a seat (for example, Japanese Utility Model Publication No. 50-28502).

The above-mentioned seat is usually adjustable to move back and forth in order to change the seating position depending on the preference and body shape of the person sitting on the seat. Further, such a seat is provided with a locking means for releasably locking the seat to the vehicle interior floor at a desired position.

(Problem to be solved by the invention) By the way, the seat is locked to the floor side while driving, but if the car crashes, for example,
The inertial force of the seat at that time is large, and if the seated person is held on the seat with a seat belt in this case, the inertial force of the seated person is added to the inertial force of the seat, causing a large impact on the locking means. will be given.

Therefore, the locking means may be configured to be strong enough to withstand the impact caused by the above-mentioned inertial force of the seat or the occupant, but if this is done, the structure of the locking means will become complicated, and there is a risk that the locking means will become heavy. This results in complicated operation of the locking means when releasably locking the seat at a desired position during normal operation.

(Purpose of the Invention) This invention was made in view of the above-mentioned circumstances, and is designed to more reliably lock the seat on the floor of the vehicle during a collision or sudden braking, and also to improve the stability of the seat during normal operation. The purpose is to prevent operations for locking and unlocking from becoming complicated.

(Structure of the Invention) A feature of the present invention for achieving the above object is that the seat is guided by a rail member via a movable bracket and is movable back and forth, and is partially close to the upper edge of the movable bracket. A lock member extending in the longitudinal direction is attached to the rail member side, and a plurality of locking notches are formed in the lock member to engage with the upper edge of the movable bracket when the movable bracket moves upward in the event of a collision. .

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a cabin floor of an automobile, and a center tunnel 2 is formed in the center of the floor 1 in the width direction of the vehicle. Additionally, side sills 3 are installed at the ends of the same floor 1 as above.
is provided. A door opening 4 is formed above the side sill 3, and a door 5 is provided to open and close the door opening 4.

A seat 7 is supported on one side of the floor 1 in the vehicle width direction via a rail member 6 extending in the longitudinal direction of the vehicle body so as to be movable back and forth. This seat 7 is composed of a seat cushion 7a and a seat back 7b.

The rail member 6 is composed of an inner fixed rail 10 supported on the side wall of the center tunnel 2 via a bracket 8, and an outer fixed rail 11 supported on the side sill 3 and having a substantially C-shaped cross section.

A movable rail 12 is placed on the inner fixed rail 10.
will be provided. A plurality of rollers 13 are interposed between the inner fixed rail 10 and the movable rail 12 over the entire length of the inner fixed rail 10 in the front-rear direction. The rolling of the rollers 13 allows the movable rail 12 to move freely back and forth along the longitudinal direction of the inner fixed rail 10. The above movable rail 12
An inner side portion of the seat cushion 7a in the vehicle width direction is supported on top.

On the other hand, the rear portion of the seat cushion 7a at the outer side in the vehicle width direction is supported by the outer fixed rail 11 via a movable bracket 16 so as to be movable back and forth.

The movable bracket 16 is the seat cushion 7.
a A sheet metal bracket main body 17 that projects diagonally downward from the end of the lower surface and whose front and rear edges are bent upward, and a pair of front and rear resin slide pieces 19 attached to the projecting ends of the bracket main body 17. , 19, and each slide piece 19 is fitted into the outer fixed rail 11 so as to be slidable back and forth while being allowed to move slightly up and down.

Although not shown, the seat 7 is provided with a locking means for releasably locking the seat 7 to the floor 1 at a desired position.

The seat 7 is provided with a seat belt 21 that holds the seated person 20 on the seat 7 in the event of a collision or the like. One end of this seat belt 21 is connected to a retractor 22 .

The winding device 22 is attached to the lower surface of the arm body 17, and the other end of the seat belt 21 passes through a through hole 23 formed in the arm body 17 to the side of the seat 7 opposite to the winding device 22. It has been extended. The other end of the seat belt 21 is supported on the center tunnel 2 via a buckle device 24.

The buckle device 24 is connected to a buckle body 25 mounted on the center tunnel 2 and the other end of the seat belt 21, and the buckle body 25 is connected to the other end of the seat belt 21.
A damping plate 2 is detachably locked to the damping plate 5.
It consists of 6. Then, the seated person 20 is restrained on the seat 7 by the seat belt 21 due to the engagement of the Doug plate 26 with the buckle body 25. On the other hand, by removing the tongue plate 26 from the buckle body 25, the restraint of the seated person 20 by the seat belt 21 is released.

In the above configuration, a locking device is provided to more firmly lock the seat 7 to the floor 1 side in the event of a collision or sudden braking of the vehicle.

This locking device will be explained below.

A locking member 29 having an inverted L-shaped cross section is attached to the outer fixed rail 11, and this locking member 29 is attached to the front and rear upper edges 17 of the bracket body 17.
It is provided so as to be close to a and extend in the front-rear direction.

A plurality of rectangular locking notches 30 are formed at equal intervals on the lower edge of the locking member 29. This locking notch 30 is used to prevent the bracket body 17 from moving upward.
The movable bracket 16 is engaged with the upper edge 17a of the movable bracket 16 to prevent movement of the movable bracket 16 in the longitudinal direction with respect to the vehicle body.

In the above case, the lock member 29 is attached to the floor 1.
It can also be attached to the side. Further, the locking notch 30 may be serrated.

(Operation) Next, the operation of the above configuration will be explained with reference to FIG.

When the locking means (not shown) is released, normally the upper edge 17a of the bracket body 17 and the locking notch 30 do not engage with each other. The seat 7 can be moved back and forth by sliding the slide piece 19. Then, by locking the locking means at a desired position of the seat 7, the seat 7 is locked at that position.

For example, if the car collides with the car while it is traveling forward, the seat 7 and the seated person 20 tend to move forward relative to the car body due to their inertia. In this case, as the seated person 20 moves forward (arrow A in FIG. 1), the seat 7 is pulled forward and upward via the seat belt 21 (arrow B in the figure).

At this time, the movable bracket 16 moves upward with the above operation, and both upper edges 17a of the bracket main body 17 are engaged with the locking notches 30 corresponding to the position of the seat 7 at this time. This engagement prevents the seat 7 from moving forward, and the seat 7 is locked on the floor 1 side.

Also, contrary to the above, when the seat 7 attempts to move backward with respect to the vehicle body due to a rear-end collision of the vehicle, the upper edge 17a of the bracket body 17 engages with the locking notch 30 and the seat 7 moves toward the floor. Locked to side 1.

(Effects of the Invention) According to the present invention, the movable bracket that supports the seat and the locking notch formed on the rail member side are made to be neglected when the seat lifts up during a collision or sudden braking of the automobile. Since the seat is configured to be locked on the floor side, the seat can be more reliably locked on the floor side in the event of the above-mentioned collision, and the occupant can therefore be more reliably protected.

Moreover, in the above case, the engagement between the movable bracket and the locking notch is done automatically by utilizing the movement based on the inertia of the seat in the event of a car collision, etc., so it is not possible to lock or lock the seat normally. During the release operation, the engagement between the movable bracket and the locking notch is released, and therefore,
Even when a device is provided to more firmly fix the seat to the floor side in the event of a collision as described above, the inconvenience that normal seat locking and unlocking operations become more complicated than before can be avoided.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, with FIG. 1 being an overall side view and FIG. 2 being a partial front sectional view. DESCRIPTION OF SYMBOLS 1... Floor, 6... Rail member, 16... Movable bracket, 17a... Upper edge, 29... Lock member, 30... Locking notch.

Claims (1)

[Claims] 1. A rail member extending in the longitudinal direction of the vehicle body is provided on the cabin floor, and a movable bracket is provided on the rail member to allow slight up-and-down movement and is guided so as to freely move back and forth, and the seat is supported by this movable bracket. In an automobile seat device, a locking member extending in the front-rear direction is attached to the rail member side close to a partial upper edge of the movable bracket, and engages with the upper edge of the movable bracket when the movable bracket moves upward. A locking device for an automobile seat, characterized in that a plurality of notches are formed in the locking member.