JP2001206185A - Head protective air bag assembly structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce man-hours for air bag assembly by allowing a cover body formed integrally with an air bag body to function in the same manner as a conventional jumping table. SOLUTION: This head protective air bag assembly structure is formed by disposing the air bag body 32 in folded up state inside the roof lining 26 of a body so as to pass over a pillar garnish 20. Over the pillar garnish 20, a cover body (cloth material 34) is wound on the outside of the air bag body 32. The cover body is expanded when the air bag body 32 is inflated so as to guide the development of the air bag body 32 toward the inside of a cabin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head of a type in which an airbag body stored inside a roof lining is normally deployed in a curtain shape when an impact exceeding a predetermined load is applied to a side portion of a vehicle body. The present invention relates to a structure for assembling a part protection airbag.

[0002]

2. Description of the Related Art A technique disclosed in, for example, Japanese Patent Application Laid-Open No. 11-91490 is known as this type of airbag assembly structure. In this technique, a guide means (jump base) formed of a metal plate is provided near an upper end of a pillar garnish. The jump platform guides the airbag body when deployed so as not to enter the inside of the pillar garnish or to catch on the upper end of the pillar garnish.

[0003]

However, since the above-mentioned jump stand is a completely different metal part from the airbag body, it is necessary to assemble the jump stand to the body panel side with a special tool, for example. The man-hour for assembling the airbag increases accordingly. Also metal (steel)
Jump ladders are expensive and the weight increase due to their use cannot be ignored.

One object of the present invention is to solve the above-mentioned problems, and one object of the present invention is to provide an airbag body and a cover integrally formed so as to perform the same function as a conventional jumping stand. The aim is to reduce man-hours. Another object of the present invention is to make it possible to reduce the price and the weight while performing the same function as a jumping stand.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the invention according to claim 1 is characterized in that a folded airbag body is provided inside a roof lining of a vehicle body in the form of a pillar garnish. An assembling structure of a head protection airbag disposed so as to pass through an upper portion, wherein a covering is wound around the outside of the airbag body at an upper portion of the pillar garnish. The cover is expanded when the airbag body is inflated, and guides the deployment of the airbag body toward the passenger compartment.

[0006] As described above, the cover is a unitary part with the airbag body, and when the airbag body is inflated, the cover expands at the upper part of the pillar garnish and guides the deployment of the airbag body toward the vehicle interior. Therefore, the same function can be performed without using the conventional jumping stand, and the man-hour for assembling the airbag is reduced by the necessity for the work of attaching the jumping stand.

According to a second aspect of the present invention, there is provided an assembling structure of the head protecting airbag according to the first aspect, wherein the airbag body is provided on the upper part of the pillar garnish via the covering body. It is attached to the body panel side. According to this configuration, in addition to the operation and effect according to the first aspect of the present invention, a member for attaching the airbag body to the body panel side near the upper portion of the pillar garnish is not required, so that the number of parts in this portion is reduced. Is done.

According to a third aspect of the present invention, there is provided an assembling structure of the head protecting airbag according to the first aspect, wherein a cloth material is used as the cover. By using the cloth material for the cover in this way, in addition to the operation and effect according to the first aspect of the present invention, the cost is significantly lower and lighter than the conventional jumping stand.

According to a fourth aspect of the present invention, there is provided the head protection airbag assembling structure according to the third aspect, wherein one edge of the cloth material is sewn to the airbag main body. The bag is wound around the outside of the bag body, and the wound state is held by taping. In this case, in addition to the function and effect of the third aspect of the invention, the structure for forming the airbag body and the cloth material together is simplified.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a schematic diagram showing a part of a vehicle body, and FIG.
It is an expanded sectional view in the II-II arrow direction. The airbag 30 shown in these drawings is of a type that deploys in a curtain shape in a vehicle when an impact of a predetermined value or more is applied to a side portion of the vehicle body. The airbag 30 is arranged along a roof side rail 10 of the vehicle body from the front pillar 12 to the quarter pillar 16 through the upper part of the center pillar 14 as shown in FIG.
As shown in FIG. 2, a bag-shaped airbag body 32 which is a main part of the airbag 30 is folded and stored inside the roof lining 26. The airbag body 32 is inflated by blowing gas blown from an inflator (not shown) based on a detection signal for an impact applied to a side portion of the vehicle body.

As is apparent from FIG. 2, the roof side rail 10 includes a rail inner panel 10a and a rail outer panel 10b, and a resin pillar garnish 20 is provided at the center pillar 14 with respect to the rail inner panel 10a. , Are connected by a clip 24 attached to the pedestal 22. The roof lining 26 is also made of resin and connected to the roof side rail 10 (not shown). A space is secured between the rail inner panel 10a and the pillar garnish 20 and the roof lining 26, and the upper end of the pillar garnish 20 and the roof lining 2
6 is overlapped with the lower edge. The airbag body 32 is located in a space inside the roof lining 26,
It is stored so as to pass over the upper part of the pillar garnish 20.

FIG. 3 is a perspective view showing the structure of the airbag 30. As shown in FIG. As apparent from this drawing, the airbag body 32 folded as described above is provided with a cloth material 34 at a location corresponding to the vicinity of the upper portion of the pillar garnish 20. This cloth material 34 has a substantially rectangular shape, and a mounting portion 37 projects in the center of the upper edge. As shown in FIG. 3A, only the upper edge of the cloth material 34 is sewn to the upper corner of the airbag body 32 by the sewn portion 36. Therefore, the cloth material 34 is wound so as to wrap the outside of the airbag body 32 as shown in FIG. 3 (B), and the tape 39 is wound around two outside portions of the cloth material 34 as shown in FIG. 3 (C). The bag body 32 is held in a wrapped state.

As described above, the cloth material 34 is an example of a “cover” that wraps the airbag body 32 in a folded state, and the material is not limited to cloth. Good. The tape 39 is made of a material that can be easily cut by expanding the airbag body 32 as described above.

As described above, the airbag body 32 is stored in the space inside the roof lining 26 along the roof side rail 10, and the airbag body 32 has a plurality of directions in the direction along the roof side rail 10. The body panel (rail inner panel 10
It is attached to a) by a predetermined attachment member (not shown). However, in the upper part of the pillar garnish 20, the rail inner panel 10a is provided via the cloth material 34.
The airbag body 32 is attached to the airbag. That is, cloth material 3
The mounting portion 37 of FIG. 4 has a mounting hole 38 for screw insertion (FIG. 3), and by using this, the mounting portion 37 is mounted to the rail inner panel 10a by a screw 40 as shown in FIG. . As described above, the airbag body 32 is a unitary part with the airbag body 32, and also serves as a member for attaching the airbag body 32 to the rail inner panel 10a.

FIG. 4 is a sectional view showing the deployment operation of the airbag 30 corresponding to a part of FIG. When the gas ejected from the inflator is introduced into the airbag body 32 during this deployment, first, the tape 39 is cut and the cloth material 34 starts to spread as shown in FIG. Begins to expand. As the amount of gas introduced increases and the airbag body 32 expands, FIG.
As shown in (B), the cloth material 34 is made of the pillar garnish 2.
It spreads over the top of 0. In parallel with this, the airbag body 32 pushes the roof lining 26 open toward the vehicle interior, and is deployed into the vehicle interior from between the roof lining 26 and the pillar garnish 20.

That is, the deployment of the airbag body 32 at the upper part of the pillar garnish 20 is guided by the airbag body 32 and the cloth material 34 which is a unitary part, and a part of the airbag body 32 enters the inner space of the pillar garnish 20. This prevents the pillar garnish 20 from being caught on the upper end. Therefore, the same function can be performed by the cloth material 34 without using the conventional metal jump pedestal, and the cloth material 34 is much cheaper and lighter than the metal jump pedestal.

In FIG. 2 and FIG. 4, the thickness of the cloth material 34 is larger than the actual thickness in order to clarify the structure and the deployed state of the airbag 30. In the present embodiment, the airbag body 32 is the center pillar 1.
4 has been described so as to pass through the upper part of the pillar garnish 20.
0 may be a pillar garnish other than the center pillar depending on the vehicle type.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a part of a vehicle body.

FIG. 2 is an enlarged sectional view taken along the line II-II in FIG.

FIG. 3 is a perspective view illustrating a configuration of an airbag.

FIG. 4 is a cross-sectional view illustrating a deployment operation of the bag in correspondence with a part of FIG. 2;

[Description of Signs] 20 Pillar garnish 26 Roof lining 30 Airbag 32 Airbag main body 34 Cloth material (coating)

Claims (4)

[Claims] 1. An assembling structure of an airbag for protecting a head, wherein a folded airbag body is disposed inside a roof lining of a vehicle body so as to pass through an upper part of a pillar garnish, wherein the pillar is provided. A head configured to wrap a covering around the outside of the airbag body at an upper part of the garnish, the covering body being spread when the airbag body is inflated, and guiding the deployment of the airbag body toward the vehicle interior. Assembly structure of airbag for part protection. 2. The assembly structure of an airbag for protecting a head according to claim 1, wherein the airbag body is attached to a body panel side of a vehicle body via the covering at an upper portion of the pillar garnish. Head protection airbag assembly structure. 3. The head protection airbag assembling structure according to claim 1, wherein a cloth material is used as the covering body. 4. An assembly structure for an airbag for protecting a head according to claim 3, wherein one edge of the cloth material is sewn to the airbag body and wound around the outside of the airbag body. A head protection airbag assembly structure in which the wound state is held by taping.