JPH10226304A - Seat incorporating air bag for side impact - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the combination of an air bag device with a seat, improve outward appearance, without scattering a part when an air bag main unit is unfolded, make possible forming in a simple structure, and obtain a stable swollen condition of the air bag main unit. SOLUTION: In a seat incorporating an air bag for side impact, in a back surface side of a seat back 3, an almost U-shaped cross sectional back garnish 25 is mounted. An air bag device 11 is stored in a recessed part 20 formed in a side part of a pad material 5, a welling direction of an air bag main unit 17 is regulated by the back garnish 25. Inside a side part of the back garnish 25, a guide member 31, 32 regulating swelling in a vertical direction of the air bag main unit 17 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat incorporating an airbag for a side collision of a vehicle, and more particularly to a seat frame, a pad material attached to the seat frame, and a skin material covering the pad material. The present invention relates to a side-impact airbag-integrated seat including a gas generator and an airbag body, the airbag device being provided on a side portion of a vehicle seat including:

[0002]

2. Description of the Related Art Conventionally, in order to avoid a direct impact between a side wall of a vehicle body such as a door deformed by an impact load and a seated occupant in the event of a side collision of the vehicle, various vehicle body side portions are required. Energy absorption structures and airbag devices have been proposed,
For example, JP-A-4-356246 and JP-A-8-2
There is an energy absorbing structure and an airbag device as shown in, for example, Japanese Patent No. 07689.

[0003] An airbag device as an energy absorbing structure on the side of a vehicle body described in Japanese Patent Application Laid-Open No. 4-356246 is provided with a casing of the airbag device on the side of a seatback or a seat cushion facing the side wall of the vehicle body. Is provided, and a lid for closing an opening of the airbag module as a casing is provided. When the airbag body is inflated, the lid is pivoted on the rear side of the vehicle as a hinge, and air is provided by a link member or the like. The structure in which the bag module is moved so that there is nothing obstructing the deployment of the airbag body in front of the opening of the airbag module, and the airbag body inflates forward along a guide member such as a lid. It is shown.

In Japanese Patent Application Laid-Open No. Hei 8-207689, an airbag module without a casing of an airbag device is housed on a side portion of a seat back, and the airbag module is provided with a gas generator, an airbag body, Is shown, and the base end of the airbag main body is held down between the outer peripheral surface of the support tube built into the base end portion of the airbag main body and the holding plate to obtain mounting strength. 1 shows a configuration in which the thickness of the airbag module is reduced.

[0005]

However, in the airbag device having the energy absorbing structure on the side of the vehicle body described in Japanese Patent Application Laid-Open No. 4-356246, an airbag module as a casing is required. Bag modules are generally press-formed products of steel plates, and have a drawback that they increase costs because they are deep-bottomed, so multiple parts are assembled by welding etc. and the surface is rustproofed. Further, unless the airbag module is moved by a link member or the like, the direction of inflation and deployment of the airbag main body, which requires the opening of the airbag module, cannot be obtained, and is disclosed in JP-A-8-207689. In the airbag device, there is no casing, but there is also a regulating member that regulates the deployment of the airbag body to the door side. There is a possibility that the airbag body may be deployed rearward by contacting the B pillar of the vehicle, and there is a possibility that the airbag body cannot be inflated and deployed accurately between the occupant and the inner surface of the door. I was

SUMMARY OF THE INVENTION It is an object of the present invention to improve the external appearance by easily combining the airbag device with a side collision airbag-equipped seat having an airbag device that operates in the event of a side collision of a vehicle and the seat. Further, there is provided a side collision airbag built-in sheet which can be formed in a simple structure without scattering of parts when the airbag body is deployed, and which can obtain a stable inflated state of the airbag body. It is.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a side-impact airbag-integrated seat according to claim 1 of the present invention is provided with a seat frame and a seat frame mounted on the seat frame. An airbag device provided on a side of a vehicle seat including a pad material to be provided and a skin material covering the pad material, wherein the airbag device includes a gas generator and an airbag body. In the airbag-incorporated seat, the airbag device is housed in a recess formed inside the pad material, and the gas generator of the airbag device is fixed to a side portion of the seat frame. Back garnish is attached,
The inflation direction of the airbag body of the airbag device is regulated by the back garnish.

According to a second aspect of the present invention, there is provided the seat for a side collision airbag, wherein a guide member is provided inside the side portion of the back garnish for restricting the airbag body from bulging in the vertical direction. It is characterized by.

According to a third aspect of the present invention, there is provided a side-impact airbag-incorporating sheet, wherein a guide member is provided inside a side portion of the back garnish for restricting vertical expansion of the airbag body. The distal end of the member is locked by a locking portion provided on a side portion of the seat frame.

According to the side-impact airbag built-in sheet of the first aspect of the present invention, the airbag device is housed in a concave portion formed inside the pad material, and the gas generator of the airbag device is a seat. It is fixed to the side of the frame, the back garnish is attached to the back side of the vehicle seat,
Since the direction of inflation of the airbag body of the airbag device is regulated by the back garnish, a casing or the like is not required, the configuration can be simplified, the combination of the airbag device and the seat is easy, and the appearance is reduced. Can be improved, and there is no scattering of components when the airbag body is deployed, and a stable inflated state of the airbag body can be obtained.

According to the side-impact airbag-integrated sheet according to the second aspect of the present invention, a guide member is provided inside the side portion of the back garnish for restricting the airbag body from bulging in the vertical direction. Therefore, when the airbag body is inflated, lateral and vertical inflation of the airbag body can be regulated by the side portion of the back garnish and the guide member.

According to the side-impact airbag-integrated sheet according to the third aspect of the present invention, a guide member is provided inside the side portion of the back garnish for restricting the airbag body from bulging in the vertical direction. Since the tip of the guide member is locked by the locking portion provided on the side of the seat frame, the strength of the back garnish can be improved, and the screwing of the back garnish can be eliminated, and the number of parts can be reduced. Can be reduced.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a seat incorporating a side airbag according to the present invention. FIGS. 1 to 7A and 7B show an embodiment of a side-impact airbag-integrated seat according to the present invention. The side-impact airbag-incorporated seat is used for driving a vehicle seat. It can be applied to a seat, a passenger seat, a rear seat, or the like.

As shown in FIGS. 1 and 2, a vehicle seat 1 is provided.
Is provided with a seat cushion 2 and a seat back 3, and a back garnish 25 is fixed to the seat back 3 with screws 27. The back garnish 25 is formed in a substantially U-shape in cross section covering both side portions of the seat back 3, but at least one side where the airbag device 11 is provided is bent and formed in a substantially L-shape. I just need.

As shown in FIGS. 5A and 5B, the airbag device 11 is modularized and fixed to the side frame 3a of the seat back 3. The airbag module 12 includes a cylindrical gas generator 15 and an airbag body 17, and operates when the gas generator 15 operates.
The airbag body 17 is attached so as to enclose the gas generator 15 so that the gas ejected from the airbag flows in.

A bolt 15a is provided on one side of the gas generator 15.
The bolt 15a is inserted into bolt holes 17a and 17b formed on the base end side of the airbag body 17, respectively, and the airbag body 17 is folded into a predetermined shape and can be broken in a cover member. 18. Reference numeral 18a is a bolt hole formed in the cover member 18.

As shown in FIG. 5A, the gas generator 1
5 from the position where the bolt 15a on one side is planted.
The gas ejection port 15b is formed at an angle of 0 degrees. By inserting a bolt 15a of the gas generator 15 into a bolt hole formed in the side frame 3a and fixing it with a nut 15c, the gas ejection port 15b is formed so as to face the front of the seat back 3. I have.

As shown in FIGS. 2 and 3, the seat back 3
The pad material 5 and the skin material 7 are attached to the side frame 3a of the first embodiment, and the concave portion 2 in which the airbag module 12 of the airbag device 11 is stored inside the pad material 5.
0 is formed.

The skin material 7 of the seat back 3 includes a main cloth 7a and a side cloth 7b. The airbag module 12 is covered with the side cloth 7b of the skin material 7, and is provided at an end of the side cloth 7b. The hook member 22 is locked to the side frame 3a and is terminated.

The back garnish 25 is made of a base material 25a.
And a trim material 25b that covers the surface of the substrate 25a. In addition, the back garnish 25 can also be constituted only by the base material 25a. The base material 25a of the back garnish 25 is formed by stamping molding, injection molding, or the like from ABS, PP resin material, or the like.

When the airbag body 17 has a capacity of 15 liters or more, the gas generation rate of the gas generator 15 of the airbag device 11 is high and the gas amount is large, so that the base material 25a of the back garnish 25 is resistant to gas. It is preferable to use a reinforced plastic mixed with high impact polycarbonate or glass fiber.

Further, as shown in FIG. 4, a reinforcing rib 26 can be provided on the base material 25a of the back garnish 25. A guide member 3 is provided inside the side portion of the back garnish 25 for restricting the airbag body from expanding in the vertical direction.
1, 32 are provided.

When the airbag body expands, lateral and vertical expansion outside the airbag body 17 can be restricted by the side portions of the back garnish 25 and the upper and lower guide members 31 and 32.

The base material 25a of the back garnish 25
When the trim material 25b covering the surface is used, it is preferable to use a cloth of the same material as the side cloth 7b of the skin material 7 or vinyl chloride leather containing reinforcing fibers.

As shown in FIG.
Breaks the cover member 18, then breaks the sewn portion 8 of the main cloth 7a and the side cloth 7b and swells forward. Further, the pad material 5 at the storage position of the airbag module 12 is pressed forward and inward, which is the center direction of the seat back, and the airbag body 17 is swelled forward with its direction being regulated by the side of the back garnish 25.

The length L of the side portion of the back garnish 25 projecting forward is formed so as to cover the entire width of the airbag module 12. If the length can cover about half or more of the length of the folded portion, the deployment direction of the airbag body 17 can be restricted.

If the length of the folded portion of the airbag body 17 is about half or less, the airbag body 17 greatly expands toward the door side, and cannot be accurately expanded in a desired direction. Therefore, by adjusting the length of the side portion of the back garnish 25, the airbag body 17
Of the back garnish 25 can be adjusted in consideration of various conditions such as the surface shape of the door and the distance between the door and the occupant.

FIG. 6 shows a different embodiment of the present invention. Parts corresponding to those of the above-described embodiment are denoted by the same reference numerals, and further detailed description is omitted. Instead of covering the airbag module 12 with the side cloth 7b of the skin material 7, the side cloth 7b is guided from the front end of the airbag module 12 along the recess 20 of the pad material 5 to the side frame 3a side. 7b is a terminal processed by the side frame 3a.

According to this configuration, the airbag body 17 breaks the cover member 18, and then the airbag body 17 extends from between the side cloth 7 b and the tip of the back garnish 25.
Bulging forward. Further, the pad material 5 at the storage position of the airbag module 13 is pressed forward and inward, which is the center direction of the seat back, and the airbag body 17 is restricted in direction by the side of the back garnish 25 and swells forward.

7 (a) and 7 (b) show different embodiments of the back garnish 25. Parts corresponding to those of the above-described embodiment are denoted by the same reference numerals, and are denoted by the same reference numerals. Although the detailed description is omitted, the back garnish 25 shown in FIG.
The screws 37 are fixed to the bracket 35 in a state where the distal ends of the guide members 31 and 32 on the side of the bracket abut on the side frame 3a.

In the back garnish 25 shown in FIG. 7 (b), a T-shaped projection 39 is formed at the tip of the guide members 31, 32 on the side of the back garnish 25, and the back garnish 25 serves as an engaging portion on the side frame 3a. Is fixed, and the protrusion 39 at the tip of the guide member 31, 32 is locked to the fixed rail 41 of the side frame 3a. In this embodiment, the screw 37 fixing operation is not required.

[0032]

The above is the embodiment of the seat incorporating the airbag for side collision according to the present invention.
According to the side-impact airbag built-in seat described in the above, the airbag device is housed in a recess formed inside the pad material, and the gas generator of the airbag device is fixed to a side portion of the seat frame, and The back garnish is attached to the back side of the seat for use, and the direction of inflation of the airbag body of the airbag device is regulated by the back garnish. The combination of the bag device and the seat is easy, the appearance can be improved, and there is no scattering of parts when the airbag body is deployed, and a stable inflated state of the airbag body can be obtained.

According to the side-impact airbag-incorporated sheet of the second aspect of the present invention, a guide member is provided inside the side portion of the back garnish for restricting the vertical expansion of the airbag body. Therefore, when the airbag body is inflated, lateral and vertical inflation of the airbag body can be regulated by the side portion of the back garnish and the guide member.

According to the side-impact airbag built-in sheet of the third aspect of the present invention, a guide member is provided inside the side portion of the back garnish to regulate the vertical expansion of the airbag body. Since the tip of the guide member is locked by the locking portion provided on the side of the seat frame, the strength of the back garnish can be improved, and the screwing of the back garnish can be eliminated, and the number of parts can be reduced. Can be reduced.

According to the present invention, it is possible to easily combine the airbag device with the airbag device for a side collision airbag-equipped seat provided with an airbag device that operates in the event of a side collision of the vehicle, and to improve the appearance. To obtain a side-impact airbag-integrated sheet that can be formed into a simple structure without scattering of parts when the airbag body is deployed, and can obtain a stable inflated state of the airbag body. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a seat for a side collision airbag according to the present invention.

FIG. 2 is a partial cross-sectional view of a seat incorporating a side airbag according to the present invention.

FIG. 3 is a partial cross-sectional view of the side airbag-integrated seat according to the present invention when the airbag body is inflated.

FIG. 4 is a partial perspective view showing an embodiment of a back garnish of the seat with a side collision airbag according to the present invention.

FIGS. 5A and 5B show an airbag module of the side-impact airbag-integrated sheet according to the present invention, wherein FIG. 5A is an exploded perspective view and FIG.

FIG. 6 is a partial cross-sectional view showing a different embodiment of a side collision airbag built-in sheet according to the present invention.

FIGS. 7A and 7B show an airbag module of the side-impact airbag-integrated sheet according to the present invention, wherein FIG. 7A is a partial longitudinal sectional view, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat cushion 3 Seat back 3a Side frame 5 Pad material 7 Skin material 7a Main cloth 7b Side cloth 11 Airbag device 12 Airbag module 15 Gas generator 15a Bolt 15b Gas spout 15c Nut 17 Airbag body 18 Cover member 20 concave portion 25 back garnish 25a base material 25b trim material 26 reinforcing rib 31 guide member 32 guide member 35 bracket 37 screw 39 protrusion 41 fixing rail

Claims (3)

[Claims] An airbag device provided on a side portion of a vehicle seat including a seat frame, a pad material attached to the seat frame, and a skin material covering the pad material; In a side collision airbag built-in sheet including a gas generator and an airbag body, the airbag device is housed in a concave portion formed inside a pad material, and the gas generator of the airbag device is a seat frame. And a back garnish is attached to the back side of the vehicle seat so that the direction of inflation of the airbag body of the airbag device is regulated by the back garnish. Seat with airbag for side collision. 2. A side collision airbag assembly according to claim 1, wherein a guide member for restricting vertical expansion of the airbag body is provided inside the side portion of the back garnish. Sheet. 3. A guide member is provided inside the side portion of the back garnish for restricting the airbag main body from expanding in the vertical direction, and a leading end of the guide member is provided on a side portion of the seat frame. 2. The side-impact airbag-integrated seat according to claim 1, wherein the seat is fixed to the side.