JP3166642B2 - Occupant restraint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an occupant restraint device having a seat belt device and an airbag device.

[0002]

2. Description of the Related Art Seat belt devices and airbag devices are known as occupant restraint devices used in vehicles such as automobiles. The seatbelt device includes a belt member that is mounted on the body of an occupant sitting on a seat, a retractor that winds the belt member, and the like. The retractor called the ELR (Emergency Locking Retractor) allows the belt member to be extended when the belt member is attached to the occupant's body.
When an acceleration exceeding a predetermined value occurs in the vehicle, the vehicle is switched to a locked state to prevent the belt member from being extended.

As shown in FIGS. 7 and 8, a belt member 2 of an automobile seat belt device 1 is configured such that a tongue member 4 of the belt member 2 is removably inserted into a buckle member 3 provided at a lower portion of a seat. I have to. The intermediate portion of the belt member 2 extends downward via a shoulder belt anchor (through anchor) 5 provided at the upper part of the pillar of the vehicle body, so that the retractor 6 takes up an extra length of the belt member 2. Has become. The retractor 6 is built in the lower part of the pillar of the vehicle body.

On the other hand, as an airbag device, a front airbag mounted in front of an occupant and a side airbag mounted on a side of a seat are known. As shown in FIG. 7, the side airbag 8 includes a side portion 8a that is developed on the side of the occupant by the gas generated by the inflator when a side impact load is applied to the vehicle, and a side from the side of the body toward the head side. Head 8 deployed between the vehicle interior side wall and the occupant
b. A vehicle equipped with such an airbag device and a seatbelt device is effective in protecting occupants in the event of a collision.

[0005]

Since the seat of an automobile or the like is mounted on the floor of the vehicle so that the position in the front-rear direction can be variably set by a well-known seat slide mechanism or the like, when the side airbag 8 is deployed, Depending on the position of the seat, there is a possibility that the shoulder belt portion 2a from the tongue member 4 to the shoulder belt anchor 5 may interfere with the upper portion 8c of the side airbag 8.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an occupant restraint device that can deploy an airbag into a desired shape even when the upper portion of the airbag interferes with a belt member when the airbag is deployed. It is in.

[0007]

Occupant restraint system of the present invention to fulfill the above object, according to an aspect of the is built in the lower body of the pillar
From the retracted retractor to the upper part of the pillar
The waist of the occupant sitting on the seat via the Durbelt anchor
With a shoulder belt that is attached diagonally
Belt member, a tongue member provided on the belt member, and the tongue member provided on a lower side of the seat.
A buckle member that is detachably inserted, and an air bag to deploy between the cabin sidewall and the occupant of the vehicle toward the head from the occupant side when the side impact load acts on the vehicle in the occupant restraint apparatus having the width direction of the vehicle body
One end face of the above-mentioned body
Provided at a position facing the inner wall and constitutes the side surface of the vehicle body
When the panel member collapses inside the car, it moves in the width direction of the car body.
Seat cross pipe and the above seat cross pipe
Rod-shaped or cable-shaped actuator connected to the end
Material and one end of the actuating member,
The above movement of the loss pipe causes the buckle member to move up.
And a terminal member for detaching the tongue member .

When a vehicle equipped with the occupant restraint device of the present invention is to be boarded, a belt member is attached to the occupant in the same manner as a normal seat belt device. If a deceleration exceeding a predetermined value acts on the vehicle at the time of a frontal collision, etc., the retractor (EL)
When R) is switched to the locked state, the belt member is prevented from being extended, and the occupant is restrained. If the vehicle is equipped with a front airbag, the gas generated by the inflator deploys the front airbag.

In the event of a side collision, the inflator for the side airbag is ignited when the acceleration from the side of the vehicle exceeds a predetermined value, and the generated gas causes the side airbag to move from the side of the occupant's trunk to the head. Expand the area where the part can be protected. When the buckle member is switched to the unlocked state by the unlocking means, the tongue member is separated from the buckle member. For this reason, even if the belt member is at a position where it interferes with the upper part of the side airbag, the airbag is deployed in a predetermined shape.

In order to detect a side collision load, the lock releasing means employs, for example, a rod-shaped or cable-shaped operating member which moves toward the inside of the vehicle when the side wall of the vehicle body is crushed in the vehicle compartment direction. The lock mechanism of the buckle member may be forcibly switched to the unlocked state when is moved in the above-described direction.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an occupant restraint system according to one embodiment of the present invention includes a seat belt device 1 and a side airbag 8 in the same manner as those shown in FIGS. . The seat belt device 1 includes a belt member 2 attached to the body of an occupant seated on a seat 10,
Is provided.

The retractor 6 allows the belt member 2 to be extended when the belt member 2 is worn on the occupant's body, and switches to a locked state when the vehicle experiences an acceleration exceeding a predetermined value. Thus, the belt member 2 is prevented from being fed out. Note that FIG. 1 shows the passenger seat side of a right-hand drive vehicle, and FIG. 7 shows the driver seat side, so that the left and right positional relationship of the seat belt device 1 is reversed.
The basic configuration of both is equivalent.

In the belt member 2, a tongue member 4 is inserted into a buckle member 3 provided on the lower side of the seat. An intermediate portion of the belt member 2 is a shoulder belt anchor 5 (shown in FIG. 7) provided on an upper part of a pillar of the vehicle body.
, And the retractor 6 winds an extra length of the belt member 2. Retractor 6
Is built into the lower part of the body pillar. As shown in FIGS. 1 to 3, a locking hole 15 is formed in the tongue member 4.

As shown in FIG. 3, the buckle member 3 includes a housing 21 having a tongue insertion hole 20;
Is provided with a lock mechanism 22 provided therein. An example of the lock mechanism 22 has a lock claw 26 that is rotatable about a shaft 25 so that the tip 27 of the lock claw 26 can engage with the locking hole 15 of the tongue member 4 in a detachable manner. Has become. The shaft 25 is supported by a frame (not shown) of the buckle member 3, and the frame is connected to a floor of the vehicle body or a seat belt anchor on the seat frame side via a connecting member 30.

The lock mechanism 22 includes a spring 35 for urging the lock claw 26 in a direction for engaging the locking claw 15 of the tongue member 4, and a movable portion inside the housing 21 on an extension of the tongue insertion hole 20. It has a held push rod 36 and an eject spring 37 for urging the push rod 36 in the direction of the tongue insertion hole 20.

The housing 21 has a release button 4
0 is provided movably in the left-right direction in the figure. A cam portion 41 is formed on the inner surface side of the release button 40.
The cam portion 41 is a guide surface 42 on the front end side of the lock claw 26.
When the release button 40 is pushed to the release position (unlocked position) shown in FIG. 5, the cam portion 41 slides while pushing up the guide surface 42, so that the lock claw 26 is moved to the tongue member 4. Lock hole 15
It is designed to rotate to a position where it is separated from the camera.

A connecting portion 46 is provided on a base 45 of the lock claw 26. The connecting portion 46 has a terminal member 5 at one end of a push cable 50 functioning as an example of an operating member.
1 are facing each other. The push cable 50 is inserted inside the outer tube 52 and is movable in the longitudinal direction of the outer tube 52.

As shown in FIG. 1, a sheet cross pipe 55 functioning as a displacement detecting means is connected to the other end of the push cable 50. The seat cross pipe 55 in the illustrated example is supported movably in the width direction (left and right direction) of the vehicle body with respect to the seat frame 56. When the seat cross pipe 55 is pushed in the direction of arrow F, the push cable 50 is moved. It is configured to be displaced in the same direction.

However, the seat cloth pipe 55 is stopped at a proper fixed strength so as not to move in the above-mentioned direction in a normal use state, and a large load is applied from the side as in the case of a side collision. Only when is the seat cloth pipe 55 moved in the above direction. The outer tube 52 is supported by an auxiliary frame 57 or the like as necessary. End face 5 of sheet cloth pipe 55
Reference numeral 8 is provided at a position facing an inner panel or the like that forms the inner wall of the vehicle body.

As shown in FIG. 3, the terminal member 51 of the push cable 50 faces the connecting portion 46 of the lock claw 26, and when the push cable 50 moves to the left in FIG. (The direction in which it comes off from the locking hole 15). Therefore, the connection portion 46 of the lock claw 26, the push cable 50, the seat cross pipe 55, and the like constitute the lock release means 60.

The push rod 36 of the lock mechanism 22 is urged in the direction of the tongue insertion hole 20 by an eject spring 37. When the tongue member 4 is not inserted into the buckle member 3, the push rod 36 is , The tip 27 of the lock claw 26 rides on the side surface of the push rod 36.

On the other hand, the side airbag 8 has a side portion 8a which is developed on the side of the occupant by the gas generated by the inflator when a side impact load is applied to the vehicle, and a side portion from the side of the body toward the head side. The vehicle is provided with a head portion 8b that extends between a side wall of a vehicle cabin and an occupant. Also,
A front airbag (not shown) is also provided as needed.

When a vehicle equipped with the occupant restraint device having the above configuration is to be boarded, the belt member 2 is attached to the occupant in the same manner as a normal seat belt device. As shown in FIG.
Is inserted into the buckle member 3 through the tongue insertion hole 20,
As shown in FIG. 4, the push rod 36 is pushed by the distal end surface of the tongue member 4, and the distal end 27 of the lock claw 26 is fitted into the locking hole 15 of the tongue member 4, and is prevented from coming off. When the tongue member 4 is detached from the buckle member 3 at the time of getting off or the like, as shown in FIG.
By pressing, the lock claw 26 may be released from the locking hole 15 of the tongue member 4.

In the state where the occupant seated in the seat 10 wears the seat belt device 1, when a deceleration exceeding a predetermined value acts on the vehicle at the time of a frontal collision or the like, the retractor 6 is switched to the locked state, so that the belt member is switched. 2 is stopped, and the occupant is restrained. If the vehicle is equipped with a front airbag, the gas generated by the inflator deploys the front airbag.

At the time of a side collision, when the impact from the side of the vehicle exceeds a predetermined value, the inflator for the side airbag is ignited, and the gas generated generates side airbag 8.
Expands. At this time, if a panel member or the like forming a side surface of the vehicle body is crushed inward by an obstacle such as a collision partner vehicle or the like, the end surface 58 of the seat cross pipe 55 is pushed inward by the inner side wall of the vehicle body.

For this reason, the push cable 50 is pushed,
As shown in FIG. 6, the lock claw 26 moves in the unlocking direction inside the buckle member 3, thereby releasing the engagement with the tongue member 4 and pushing the push rod 36 by the elastic force of the eject spring 37. As a result, the tongue member 4 is pushed back in a direction in which the tongue member 4 is separated from the buckle member 3. Therefore, the belt member 2 is released from the restraint, so that the belt member 2
The airbag 8 can be deployed in a predetermined shape even at a position where the airbag 8 interferes with the upper part of the airbag.

The lock release means for releasing the engagement between the buckle member 3 and the tongue member 4 may be any means capable of forcibly switching the buckle member 3 to the unlock direction by a side collision load. I just need
It goes without saying that the present invention can be implemented in various modes other than the mechanical type using the push cable 50 and the sheet cross pipe 55.

[0028]

According to the present invention, the tongue member of the seat belt device can be separated from the buckle member when the side airbag is deployed at the time of a side collision, so that the belt member interferes with the airbag. However, the airbag can be deployed in a desired shape.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automobile seat provided with a seat belt device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a part of a tongue member and a buckle member of the seat belt device.

FIG. 3 is a sectional view of a tongue member and a buckle member of the seat belt device.

FIG. 4 is a sectional view showing a state where a tongue member is inserted into the buckle member shown in FIG. 3;

FIG. 5 is a cross-sectional view illustrating a state where a release button of the buckle member illustrated in FIG. 3 is pressed.

FIG. 6 is a sectional view showing the unlocked state of the buckle member shown in FIG. 3;

FIG. 7 is a perspective view showing an occupant restraint device provided with a seat belt device and a side airbag.

FIG. 8 is a side view of the occupant restraint device shown in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Seat belt device 2 ... Belt member 3 ... Buckle member 4 ... Tongue member 8 ... Airbag 10 ... Seat 22 ... Lock mechanism 26 ... Lock claw 50 ... Push cable (operating member) 55 ... Seat cross pipe (displacement detecting means) 60 ... unlocking means

Continuation of the front page (56) References JP-A-5-294195 (JP, A) JP-A-4-63784 (JP, U) JP-T-63-503451 (JP, A) (58) Fields investigated (Int) .Cl. ⁷ , DB name) B60R 22/12-22/48 B60R 21/16-21/32

Claims (2)

(57) [Claims] 1. A retractor built in a lower part of a pillar of a vehicle body.
From the shoulder belt ann provided at the top of the same pillar
Leaning toward the waist of the occupant sitting in the seat via the car
Member having a shoulder belt portion attached for mounting
And the tongue member provided on the belt member and the tongue member provided on the lower side of the seat so that the tongue member can be detached.
It has a buckle member to be inserted, and an air bag to deploy between the cabin sidewall and the occupant of the vehicle toward the head from the occupant side when the side impact load acts on the vehicle In the occupant restraint device, the occupant restraint device is supported movably in the width direction of the vehicle body and has one end.
Surface is provided at a position facing the inner side wall of the vehicle body.
When the panel members that make up the side are crushed inside the car,
A sheet cross pipe that moves in the width direction, and a rod-shaped connected to the other end of the sheet cross pipe
Alternatively, a cable-like operating member is provided on one end side of the operating member, and the operating member moves.
When the buckle member and the tongue member are engaged.
And a terminal member for canceling the condition . Wherein said buckle member is provided with the tongue member and engageable with the locking pawl, and a connecting portion provided on the locking pawl, the terminal member, when the panel member is collapsed into the vehicle interior side
The direction in which the lock claw is disengaged from the tongue member
The occupant restraint according to claim 1, wherein the occupant is moved.
apparatus.