JPH0684146B2 - Rear airbag device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rear seat airbag device, and more specifically, it is attached to a partition wall provided between a passenger compartment and a trunk room to provide a rear seat. The present invention relates to a rear-seat airbag device configured to hold an occupant by bulging an airbag body.

[Prior Art] Conventionally, various airbag devices have been proposed for protecting an occupant in the event of a collision such as a vehicle. Among them, as a device for protecting an occupant in the front seat, an airbag device is provided on a steering wheel or an instrument panel side. It is arranged. As an airbag device for protecting passengers in the rear seat, as shown in Japanese Utility Model Publication No. 50-62838 and Japanese Patent Publication No. 51-31580, an airbag device is installed on the back side of the upper part of the seat back of the front seat. It is crowded.

In addition, a plurality of airbag devices such as front and rear seat airbag devices and door-side airbag devices are provided. When the airbag main body of these airbag devices is inflated at one time, the pressure in the vehicle interior is reduced. Suddenly rising, making passengers uncomfortable,
Alternatively, as there is a risk of damaging the ears and eyes of the occupant, a configuration is adopted in which the interior and exterior of the vehicle are communicated with each other as shown in JP-B-51-15243 and JP-B-47-26620. It is suggested to do so.

[Problems to be Solved by the Invention]

If an airbag device for protecting the rear occupant is arranged on the back side of the upper part of the seat back of the front seat, the wall thickness of the upper part of the seat back is significantly increased, which has a drawback of narrowing the vehicle interior space. there were.

In the vehicle interior pressure rise prevention device disclosed in Japanese Utility Model Publication No. 51-15243, the interior of the vehicle is communicated from the mesh of the package tray to the outside through the trunk room and the opening of the slit. However, the temperature control efficiency in the room is deteriorated and the sound insulation effect is deteriorated.

Further, in the vehicle interior pressure adjusting device disclosed in Japanese Patent Publication No. 47-26620, a collision sensor detects a collision, and the trunk door of the trunk room is unlocked by this detection signal, which is formed 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 unlocking of the trunk door. There is a drawback that a communication state cannot be obtained unless the valve is opened, the mechanism is complicated, the operation is not reliable, and the cost is increased.

The object of the present invention is to reliably hold the passenger in the rear seat without narrowing the passenger compartment space, and to prevent the temperature control efficiency and sound insulation from deteriorating. (EN) Provided is a rear seat airbag device which can be made equal to the outside air pressure and is excellent in safety and economy.

[Means for Solving the Problems]

The present invention has been made in view of the above-mentioned problems, and an airbag device is attached to a partition wall provided between a vehicle compartment and a trunk room, and the vehicle compartment and the trunk room are attached to the partition wall around the mounting portion of the airbag device. Is formed, and a hole for decompressing the room is formed, and the hole for decompressing the room is shielded by the cover member of the airbag device.

[Action]

According to the present invention, an interior decompression hole is formed in the partition wall around the mounting portion of the airbag device to connect the vehicle interior and the trunk room, and the interior-like decompression hole is shielded by the cover member of the airbag device. Therefore, in the normal state, the vehicle interior and the trunk room are kept in a sealed state by the cover member, and when the airbag device is operated, the cover member is ruptured or opened to open the indoor decompression hole. ,
The interior of the vehicle compartment and the luggage compartment are interlocked to prevent the pressure inside the vehicle from rising, and the airbag main body can hold the passenger in the rear seat.

〔Example〕

Hereinafter, a rear seat 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 rear seat airbag device according to the present invention. A rear seat airbag device 11 is provided between a passenger compartment 2 and a trunk room 3. It is attached to the partition wall 4 provided, and in the present embodiment, it is attached to a position where the central center armrest of the bench type rear seat 5 is normally provided. The airbag device 11 includes a base plate 13 fixed to the partition wall 4, a gas generator 15 fixed to the base plate 13, and an operation of the gas generator 15 as shown by an imaginary line in FIG. T
An airbag main body 17 that bulges in a letter shape is provided. Reference numeral 6 in FIG. 1 is a front seat.

Room-like decompression holes 4a and 7a are formed in the partition wall 4 and the seat back 7 formed between the vehicle compartment 2 and the trunk room 3, respectively, and the airbag device 11 is attached to the hole 4a of the partition wall 4. The hole 4a is normally shielded by the base plate 13, the gas generator 15 and the cover member 21 of the airbag device 11 to be in a hermetically sealed state. The base plate
When the gas generator 13 and the gas generator 15 are attached to the partition wall 4, the hole 4a
As a result, the vehicle interior 2 and the trunk room 3 are in communication with each other, and the cover member 21 that covers the airbag main body 17 in a folded state is attached, so that the hole 4a is closed. The cover member 21 may be fixed not only to the partition wall 4 or the base plate 13 but also to the opening of the hole 7a of the seat back 7 on the vehicle interior 2 side.

It is sufficient that the cover member 21 is made of a synthetic resin material, and the hole 4a of the partition wall 4 is opened when the gas generator 15 is operated, and the central portion of the front side 21a of the cover member 21 is broken. Alternatively, as shown in FIG. 3, the hole 4a may be opened by rotating around the pivotal support 21b at the lower end.

In such a configuration, when the gas generator 15 is actuated by a collision of a vehicle or the like, the cover member 21 is broken or pivoted to open the hole 4a, and then the airbag body 17 is inflated and the airbag body 17 is opened. At the time of bulging, the vehicle interior 2 and the trunk room 3 are brought into communication with each other through the hole 4a, and it is possible to prevent the pressure inside the vehicle interior 2 from rising. It should be noted that the trunk room 3 and the outside air pressure can be communicated with each other through an appropriate gap or with a slit or the like. Even if they are not interlocked with each other, the communication between the passenger compartment 2 and the trunk room 3 allows the pressure inside the passenger compartment 2 to be controlled. The rise can be sufficiently prevented.

〔The invention's effect〕

The above is the configuration of the embodiment of the airbag device for a rear seat according to the present invention. According to this configuration, the interior decompression for communicating the passenger compartment and the trunk room with the partition wall around the mounting portion of the airbag device. Since a hole for use in the vehicle is formed and the hole for decompressing the room is shielded by the cover member of the airbag device, the cover member normally keeps the vehicle compartment and the trunk room sealed, and the cover is provided when the airbag device is operated. By breaking or opening the member, the hole for decompressing the room is opened, the interior of the passenger compartment and the trunk room are communicated with each other, and the pressure inside the passenger compartment can be prevented from rising, and the bulging air can be prevented. The bag body can hold the rear seat occupant, is extremely safe, has no risk of deteriorating the temperature control efficiency and sound insulation effect in the passenger compartment, has a simple structure and is economical. It can be obtained grayed device.

[Brief description of drawings]

1 to 3 respectively show an outline of one embodiment of an airbag device for a rear seat according to the present invention, and FIG. 1 is an explanatory plan view of a vehicle showing an entire mounting state of the airbag device, Second
FIG. 3 is a partially enlarged plan view of the same, and FIG. 3 is a side view of the same. In the figure, 2 ... vehicle interior, 3 ... trunk room, 4 ... bulkhead, 4a ... decompression hole in the room, 5 ... rear seat, 7 ... seat back, 7a ... hole, 11 ... air Bag device, 13 ...
… Base plate, 15 …… Gas generator, 17 …… Airbag body, 21 …… Cover member.

Claims (1)

[Claims] 1. An air bag device is attached to a partition wall provided between a vehicle compartment and a trunk room, and a partition wall around the mounting portion of the airbag device is provided with a hole for decompressing an interior of the vehicle for communicating between the vehicle compartment and the trunk room. An airbag device for a rear seat, which is formed and the hole for decompressing the room is shielded by a cover member of the airbag device.