JP3702663B2 - Installation structure for passenger head protection bag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to installation structure of the occupant head protection back grayed capable of expansion on the side of the vehicle occupant, in particular for the installation structure of the protective bag above the middle pillar garnish such as B-pillar garnish.
[0002]
[Prior art]
As a protective bag for an automobile occupant's head, WO96 / 26087 is known in which two sheets are overlapped and stitched to form an empty space between the sheets. When the gas from the gas generator is supplied into the empty chamber, the protective bag is inflated on the side of the occupant's head.
[0003]
This protective bag is arranged along the upper side of the door opening of the automobile. However, when the B pillar garnish is arranged on the lower side of the protective bag folding body, the protective bag has an influence from the upper end of the B pillar garnish. It is desirable to quickly inflate into the passenger compartment without receiving it.
[0004]
[Problems to be solved by the invention]
It is an object of the present invention to provide an installation structure for an occupant head protection bag that inflates into a passenger compartment without being affected by an intermediate pillar garnish such as a B pillar garnish.
[0005]
[Means for Solving the Problems]
The installation structure of the occupant head protection bag according to the present invention is such that the occupant head protection bag that is inflated by the gas from the gas generator is folded into a rod-like folded body, and the folded body is along the upper side of the door opening of the vehicle body. And a protective bag guide member interposed between the protective bag and the upper end of the intermediate pillar garnish when the occupant head protective bag is inflated. An installation structure for an occupant head protection bag, wherein the guide member is made of synthetic resin and surrounds at least the lower side and the passenger compartment side of the folded body, and is provided on the lower side of the folded body. have arranged the lower piece, characterized in that said lower piece closes the opening at the upper end of the intermediate pillar garnish overlaps from above the upper end of the intermediate pillar garnish It is intended to.
[0006]
Such in the passenger head protection back grayed installation structure, when the protective bag is inflated, the guide member is out open to the passenger compartment, the guide member covers the edge of the cabin side of the intermediate pillar garnish upper end. The protective bag expands into the vehicle compartment along this guide member.
[0007]
Lower piece of the guide member overlaps the upper end of the intermediate pillar garnish, and closes the opening of the upper end (e.g. gap between the B-pillar garnish and the B-pillar).
[0008]
The guide member is made of molded bodies of synthetic resin, and said lower piece which is arranged on the lower side of the folded body, and a cabin side pieces disposed on the cabin side is erected upward from the lower side piece You may have .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1A is a perspective view showing an installation structure of an occupant head protection bag according to a reference example , FIG. 1B is a longitudinal sectional view thereof, and FIG. 1C is a longitudinal sectional view of the protective bag when inflated. is there. FIG. 2 is a configuration diagram of the roof side rail viewed from the cabin showing the installation structure.
[0010]
In this reference example , a protective bag 1 for the head of an automobile occupant is disposed along the roof side rail 2 of the automobile. The protective bag 1, superposed two sheets, in which a bag shape by stitching by sewing thread. This protective bag 1 is folded into a rod shape to form a folded body 1F.
[0011]
A plurality of ears 4 project upward from the upper portion of the protective bag 1, and each ear 4 is fixed to the roof side rail 2 by a bolt 3. In addition, you may fix the upper part of the protective bag 1 to the roof side rail 2 with the volt | bolt 3 directly, without forming the ear | edge part 4. FIG.
[0012]
In the upper part of the B pillar garnish 5, a guide member 7 made of a soft sheet such as a cloth or a synthetic resin sheet is provided on the folded body 1F.
[0013]
The guide member 7 includes an attachment portion 7a attached to the roof side rail 2 with bolts 6, an upper piece 7b connected to the attachment portion 7a and extending from the upper side of the folding body 1F to the vehicle compartment side, and an attachment portion 7a. It has the lower piece 7c which goes around and goes to the vehicle compartment side through the back side and the lower side of the folding body 1F. The upper piece 7b and the lower piece 7c are connected by a very weak adhesive or adhesive, an adhesive tape, an adhesive tape, a very weak suture, or the like.
[0014]
The folded body 1F is covered with a roof trim 8. The roof trim 8 is provided with a groove 9 extending in the front-rear direction of the vehicle body, and a movable portion 8 a is formed below the groove 9 of the roof trim 8.
[0015]
In this reference example , a lid 10 that covers the opening at the upper end of the B pillar garnish 5 is formed integrally with the B pillar garnish 5. Reference numeral 11 denotes a rib that supports the lid 10. The rib 11 is formed integrally with the B pillar garnish 5.
[0016]
As shown in FIG. 2, the inflator 16 is inserted into the rear end portion of the protective bag 1, and the rear end side of the inflator 16 and the protective bag 1 is fixed to the C pillar 19 </ b> C by the bracket 17 and the bolt 18. Reference numeral 19A denotes an A pillar, and 19B denotes a B pillar.
[0017]
When the inflator 16 is activated and gas is supplied into the protective bag 1, the movable part 8 a opens into the vehicle interior as shown in FIG. 1C, and the protective bag 1 is moved downward along the door and the B pillar garnish 5. Inflates toward. At this time, since the lower piece 7c covers the edge of the upper end of the B pillar garnish 5 on the passenger compartment side, the protective bag 1 expands into the passenger compartment without being affected by the edge. The upper piece 7b overlaps the movable portion 8a, and the protective bag 1 expands while being guided by the upper piece 7b and the movable portion 8a.
[0018]
3A is a cross-sectional view showing the installation structure according to the first embodiment of the present invention , and FIG. 3B is a cross-sectional view when the protective bag 1 is inflated.
[0019]
In this embodiment, the guide member 20 is composed of a synthetic resin molded body. The guide member 20 includes a mounting portion 21 fixed to the roof side rail 2 by bolts 6, an upper piece 22 that passes from the mounting portion 21 through the upper side of the folding body 1 </ b> F to the vehicle compartment side, and is folded from the mounting portion 21. It has a lower piece 23 that goes around to the passenger compartment side through the back side and the lower side of the body 1F. Although the upper piece 22 and the lower piece 23 are plate-shaped, the vehicle compartment side portions can be opened like a flap toward the vehicle compartment.
[0020]
As shown in the drawing, the lower piece 23 overlaps the upper end of the B pillar garnish 5 'from the upper side and covers the opening 25 between the upper end and the B pillar 19B. Reference numeral 24 denotes a reinforcing rib provided on the lower piece 23.
[0021]
Also in this embodiment, when the protective bag 1 is inflated, the movable portion 8a of the roof trim opens to the vehicle compartment side as shown in FIG. 3B, and the vehicle compartment side portions of the upper piece 22 and the lower piece 23 are provided. Opens into the passenger compartment. Then, the protective bag 1 is guided by the upper piece 22 and the lower piece 23 and is expanded toward the vehicle interior.
[0022]
4A is a cross-sectional view showing an installation structure according to the second embodiment, and FIG. 4B is a cross-sectional view when the protective bag 1 is inflated.
[0023]
In this embodiment, the guide member 20 ′ is formed of a synthetic resin molded body. The guide member 20 ′ includes a mounting portion 21 fixed to the roof side rail 2 by bolts 6, an upper piece 22 ′ disposed above the folding body 1F from the mounting portion 21, and a folding body 1F from the mounting portion 21. And a lower piece 23 'that goes around to the passenger compartment side through the rear side and the lower side. A plate-like compartment side portion 23b of the lower piece 23 'can be opened like a flap toward the compartment. A protrusion 23a is provided at the upper end of the passenger compartment side portion 23b, and this protrusion 23a is engaged with the edge of the upper piece 22 'as shown in FIG.
[0024]
As shown in the drawing, the lower piece 23 ' overlaps the upper end of the B pillar garnish 5' from the upper side and covers the opening 25 between the upper end and the B pillar 19B. Reference numeral 24 denotes a reinforcing rib provided on the lower piece 23 '.
[0025]
Also in this embodiment, when the protective bag 1 is inflated, as shown in FIG. 4 (b), the movable portion 8a of the roof trim opens to the vehicle compartment side, and the vehicle compartment side portion 23b of the lower piece 23 ' Open into the room. Then, the protective bag 1 is guided by the lower piece 23 'and inflated toward the vehicle interior.
[0026]
In the above embodiment, the B pillar garnish is shown as the intermediate pillar garnish. However, when the automobile has an A pillar, a B pillar, a C pillar, and a D pillar, above the B pillar garnish and the C pillar garnish, You may employ | adopt the structure of this invention, respectively.
[0027]
【The invention's effect】
As described above, according to the present invention, the passenger head protection bag is inflated into the vehicle interior without being affected by the intermediate pillar garnish such as the B pillar garnish.
[Brief description of the drawings]
FIG. 1 (a) is a perspective view showing an occupant head protective bag and its installation structure according to a reference example , FIG. 1 (b) is a longitudinal sectional view thereof, and FIG. 1 (c) is when the protective bag is inflated. FIG.
FIG. 2 is a configuration diagram of a roof side rail viewed from the cabin showing the installation structure of FIG. 1 ;
3A is a cross-sectional view showing an installation structure according to the first embodiment of the present invention , and FIG. 3B is a cross-sectional view when the protective bag 1 is inflated.
4A is a cross-sectional view showing an installation structure according to the second embodiment, and FIG. 4B is a cross-sectional view when the protective bag 1 is inflated.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Protective bag 2 Roof side rail 3 Bolt 4 Ear | edge part 5, 5 'B pillar garnish 7 Guide member 7a Mounting part 7b Upper piece 7c Lower piece 8 Roof trim 9 Groove 10 Lid part 20, 20' Guide member 21 Mounting part 22 , 22 'Upper piece 23, 23' Lower piece

Claims (3)

An occupant head protection bag in which an occupant head protection bag that is inflated by gas from a gas generator is folded into a rod-like foldable body, and the foldable body is disposed in the front-rear direction of the vehicle body along the upper side of the door opening of the vehicle body. In the bag installation structure,
An installation structure of an occupant head protection bag provided with a guide member of the protection bag interposed between the protection bag and the upper end of the intermediate pillar garnish when the occupant head protection bag is inflated ,
The guide member is made of synthetic resin and surrounds at least the lower side and the vehicle compartment side of the folded body, and has a lower piece disposed on the lower side of the folded body,
An installation structure for an occupant head protection bag, wherein the lower piece overlaps the upper end of the intermediate pillar garnish from the upper side to close the opening at the upper end of the intermediate pillar garnish . In claim 1, the guide member is made of molded bodies of synthetic resin, fold-down the the lower piece disposed on the side of the car, which is arranged on the cabin side is erected upward from the lower side piece of the An installation structure for an occupant head protection bag, characterized in that the occupant head protection bag is provided. 3. The occupant head protection bag installation structure according to claim 1 or 2, wherein a reinforcing rib is provided below the lower piece.

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