JP2537430B2 - Mounting structure of airbag device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mounting structure of an airbag device, and more specifically, a base plate mounted on a fixed side of a vehicle body and a gas generating member fixed to the base plate. TECHNICAL FIELD The present invention relates to a mounting structure of an airbag device including a container and a folded airbag body that bulges when the gas generator operates.

[Conventional technology]

BACKGROUND ART Conventionally, an airbag device has been known as a protection device for passengers of a vehicle or the like. As this air bag device, there is Japanese Patent Publication No. 56-43890, and a gas generator is fixed to a base plate attached to a fixed side of an instrument panel, a steering wheel, etc., and an air bag body having a gas injection port is inserted through a retainer. When the gas generator operates under certain conditions, the gas momentarily flows into the airbag body, and the folded airbag body is inflated instantly. Has been done.

In addition, it automatically adjusts the rise in the vehicle interior pressure due to the inflation of the airbag body, and prevents the occupant from feeling uncomfortable and damaging the passengers' coma etc. due to the rapid increase in the interior pressure. As a Japanese Patent Publication No. 47-26620.

[Problems to be Solved by the Invention]

However, in the vehicle interior pressure adjusting device disclosed in Japanese Examined Patent Publication No. 47-26620, a collision sensor detects a collision, and the detection signal unlocks the trunk door of the trunk room to form between the trunk room and the rear seat. The air flow valve of the communication device must be opened,
The transmission path of the detection signal from the collision sensor is long, and it takes time to open the trunk door due to the unlocking of the trunk door, and the communication state cannot be obtained unless the air circulation valve is opened. It had the drawback of being complicated, unreliable in operation, and costly.

An object of the present invention is to provide an airbag device excellent in safety and economy, which has a simple structure and can quickly equalize the pressure in the vehicle compartment with the outside air pressure without adopting a means for unlocking the trunk door. It provides a mounting structure of.

[Means for solving the problem]

The present invention has been made in view of the above-mentioned problems, and includes a base plate attached to a fixed side of a vehicle body, a gas generator fixed to the base plate, and a folded airbag that bulges due to the operation of the gas generator. In a mounting structure of an airbag device including a main body, a mounting bracket having a support portion is provided on the fixed side of the vehicle body, and the support portion is normally urged by an elastic member toward the side where the airbag main body bulges. The base plate is supported in a state, a hole is formed in a side wall that separates an indoor and an outdoor close to a mounting position of the base plate, and a lid is detachably attached to the hole to operate the gas generator. Sometimes, the base plate is moved to the side opposite to the bulging side of the airbag body against the bias of the elastic member, and is shielded by the lid when the base plate moves. Characterized in that configured so as to be able to the been holes opened.

[Action]

According to the present invention, a mounting bracket having a support portion is provided on the fixed side of the vehicle body, and the base plate is supported in a state in which the support portion is normally urged by the elastic member toward the bulging side of the airbag body. Since a hole is formed in the side wall that separates the indoor and the outdoor close to the mounting position of the base plate, and the lid is removably attached to the hole, communication with the outside can be normally prevented. The base plate is moved against the urging force of the elastic member to the side opposite to the bulging side of the airbag main body by utilizing the reaction force generated when the gas generator operates, Since the hole can be opened by pressing the detachable lid based on the movement, it is possible to make the vehicle interior pressure equal to the external atmospheric pressure when the airbag body is inflated, and when the airbag body is inflated. Also the vehicle interior pressure Without raising the, or discomfort to passengers, but there is no possibility of damaging the occupant of the eardrum.

〔Example〕

Hereinafter, a mounting structure of an airbag device according to the present invention will be described in detail with reference to the drawings.

1 to 3 respectively show an outline of an embodiment of a mounting structure of an airbag device according to the present invention. An airbag device 11 is a base plate 13 mounted on a fixed side of a vehicle body, and this base plate. Gas generator fixed to 13
15 and a folded airbag body 17 which bulges by the operation of the gas generator 15 as shown by an imaginary line in FIG.

Holes 22 are formed in the side wall 21 that separates the interior of the vehicle close to the mounting position of the base plate 13 from the exterior of the engine room.
2 is formed, and as shown in an enlarged view in FIG. 2, a lid body 24 for normally shielding the hole portion 22 is attached. A locking claw 25 is formed on the lid body 24, and the locking claw 25 is locked to the outer peripheral edge of the hole 22. The lid 24 is not limited to the one having the illustrated shape and structure, and can be appropriately changed.

A pair of mounting brackets 31 is formed on the fixed side of the vehicle body, and the pair of mounting brackets 31 are provided so as to sandwich the hole 22. As shown in FIG. 3, a support portion 33 having a substantially U-shaped cross section is formed at the tip of the mounting bracket 31, a coil spring 35 is inserted into the support portion 33, and both end portions 13a of the base plate 13 are supported by the support portion 33. It is supported.

Further, as shown in FIG. 4, a pin 36 fitted with a coil spring 35 is attached to the support portion 33, and both end portions 13 of the base plate 13 are attached.
Insert the pin 36 into the hole 13b formed in
Both ends 13a of 13 can be movably supported along the pin 36. An E-ring 39 is attached to the tip of the pin 36 so that the pin 36 does not fall off the support portion 33.

Both ends 13a of the base plate 13 have the gas generator 1
It is movably attached to the side opposite to the direction in which the airbag body 17 bulges when the airbag 5 operates. A protrusion 37 is formed on the rear end of the base plate 13 or the gas generator 15.
Is formed so as to face the lid 24 attached to the hole 22.

A support portion 33 that supports both end portions 13a of the base plate 13
Is not limited to the illustrated shape structure, and an appropriate elastic member such as a rubber material may be provided instead of the coil spring 35, and the coil spring 35 and the elastic member may be omitted.

Further, although the projection 37 is disposed opposite to the lid body 24, an operating rod that operates in response to the movement of the base plate 13 may be used, and this operating rod may be formed on the lid body 24 side.

In such a configuration, when the gas generator 15 is actuated due to a collision of a vehicle or the like, a reaction force acts in the direction opposite to the direction in which the airbag body 17 is inflated (the direction of arrow a), and the gas generator 15 and the base plate 13 Both end portions 13a of the base plate 13 move in the direction of the arrow a against the coil spring 35, and the projection 37 formed at the rear end of the base plate 13 or the gas generator 15 presses the lid body 24 fitted in the hole portion 22. The locking state between the locking claw 25 of the body 24 and the outer peripheral edge of the hole 22 is released, and the hole 22 is opened.
By opening the hole 22, it is possible to prevent an increase in vehicle interior pressure.

〔The invention's effect〕

The above is the configuration of the embodiment of the airbag device according to the present invention. According to such a configuration, it is possible to move to the side opposite to the side where the airbag body bulges when the gas generator is activated. The base plate is attached to the support part, and the side wall near the mounting position of the base plate is formed with a hole communicating with the inside and outside of the room, and this hole is covered by the lid to prevent communication with the outside at normal times. The base plate is moved against the urging force of the elastic member to the side opposite to the bulging side of the airbag main body by utilizing the reaction force generated when the gas generator is actuated. Since the hole can be opened by pressing the detachable lid based on the movement of the air bag, the pressure inside the vehicle body can be made equal to the external pressure when the air bag body is inflated, and the air bag body is inflated. Sometimes cabin pressure An air bag device mounting structure that is simple in structure, highly reliable in operation, and has excellent safety and economy without the risk of raising the passengers and causing discomfort to the occupants or damaging the passenger's torso. Obtainable.

[Brief description of drawings]

1 to 3 respectively show an outline of an embodiment of a mounting structure of an airbag device according to the present invention. FIG. 1 is a sectional view showing an entire mounting state of the airbag device, and FIG. FIG. 3 is a sectional view of the hole and the lid, FIG. 3 is a partial sectional view of the mounted state of the base plate, and FIG. 4 is a partial sectional view showing another embodiment of the supporting portion. In the figure, 11 ... Airbag device, 13 ... Base plate, 15 ...
Gas generator, 17 ... Airbag body, 21 ... Side wall, 22 ... Hole, 24 ... Lid, 25 ... Locking claw, 31 ... Mounting bracket, 33 ...
Support part, 35 ... Coil spring, 36 ... Pin, 37 ... Protrusion.

Claims (1)

(57) [Claims] 1. A mounting of an air bag device comprising a base plate mounted on a fixed side of a vehicle body, a gas generator fixed to the base plate, and a folded airbag main body which bulges due to the operation of the gas generator. In structure,
A mounting bracket having a support portion is provided on the fixed side of the vehicle body, and the base plate is supported while the support portion is normally urged by an elastic member toward the bulging side of the airbag body to mount the base plate. A hole is formed in the side wall that separates the indoor and the outdoor close to the position, and the lid is removably attached to the hole, and the side opposite to the side where the airbag body bulges when the gas generator is activated. The base plate is moved against the urging force of the elastic member so that the hole shielded by the lid can be opened when the base plate is moved. Construction.