JP3680484B2 - Protective bag for automobile occupant head and safety device provided with protective bag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protective bag for an automobile occupant's head, and more particularly to a bag that expands along a side door window or the like at the time of a side collision or rollover of an automobile. The present invention also relates to a safety device provided with a protective bag for the head of an automobile occupant.
[0002]
[Prior art]
As this type of bag, there is a gas bag described in JP-A-6-191365. This gas bag has a substantially rectangular shape that can be inflated along a side window of an automobile, and a tube-shaped portion is provided on the four circumferences of the rectangular bag, and fibers are formed in an inner region of the tube-shaped portion. It has a configuration in which a mesh is stretched. The gas bag is inflated along the side window by supplying gas into the tubular portion.
[0003]
PCT patent application publications WO95 / 12504 and WO95 / 21753 describe a safety device that protects the head by pulling the curtain down from the roof between the side window and the occupant's head during a car side collision. ing. This curtain is not a bag.
[0004]
[Problems to be solved by the invention]
The gas bag disclosed in Japanese Patent Application Laid-Open No. 6-191365 has a small area (area along the window) when inflated, and can only protect the head at a specific position. The safety device of WO95 / 12504 and WO95 / 21753 spreads the curtain, and the impact applied to the head cannot be sufficiently reduced.
[0005]
The present invention provides a bag that can be inflated sufficiently widely along a window or the like on a side of an automobile and that can sufficiently reduce an impact applied to a passenger's head, and a safety device including the bag. The purpose is to do.
[0006]
[Means for Solving the Problems]
The automobile occupant head protective bag according to the present invention is a bag that is disposed near the intersection corner between the ceiling and the side surface in the interior of the vehicle and expands downward along the side surface by the introduced gas. A protective bag for a head of an automobile occupant in which a vacant space filled with gas is formed by overlapping two sheets and connecting both sheets in a linear form. An upper vacancy along the ceiling, and at least three vertical vacancies whose upper ends are connected to the upper vacancy, extend in the vertical direction, and are closed at the lower ends. Each of the sheets has a fin portion that is not introduced with gas provided between the vertical vacancies, and each sheet has a lower edge along the lower side of the protective bag and an upper side of the protective bag when the protective bag is inflated. The upper edge of the sheet along Has a side edge of the sheet along the both sides of the protection bag, each sheet is longer than the upper edge, respectively the lower edge, in a state in which spread the protective bag without introducing gas, each The upper edge of the sheet is substantially V-shaped with the center in the longitudinal direction being lower than both ends, and the lower edge is a polygonal shape in which a plurality of line segments are connected in a broken line , and gas is supplied into the protective bag. when has been protected bag is inflated, the lower edge of the protective bag extends linearly in a substantially horizontal direction, characterized in that extending along the a-pillar and C-pillar of the respective both sides of the protection bag automobiles It is what.
[0007]
The safety device provided with the protection bag for the head of the vehicle occupant according to the present invention is characterized by including the protection bag for the head of the vehicle occupant.
[0008]
In this bag, gas is introduced into the upper vacancy, the gas flows into the vertical vacancy, the upper vacancy and the vertical vacancy expand, and the bag spreads greatly along the side surface of the automobile. Therefore, the bag is surely interposed between the occupant head and the side surface of the automobile even if the position of the occupant's head varies.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 (a) is a front view of a state in which the bag according to the embodiment is expanded (no gas is introduced), FIG. 1 (b) is a sectional view taken along line BB of FIG. FIG. 2 (a) is a perspective view of a state in which gas is introduced into the bag and inflated, and FIGS. 2 (b) and (c) are cross-sectional views taken along lines BB and CC in FIG. 2 (a). . 3 is a schematic side view showing the installation position of the bag inside the automobile, FIG. 4 is a view showing a state where the bag is inflated in the interior of the automobile, and FIG. 5 is a VV line in FIG. FIG.
[0010]
The bag 1 has two substantially fan-shaped synthetic resin sheets 2 and 3 overlapped, and provided with joint portions 11, 12, 13, and 14 for joining their entire peripheral edges by welding or adhesion, and extends in the vertical direction. Bonding portions 21 to 38 are provided. Reference numeral 11 in FIG. 1 indicates a joint portion of the upper edges of the sheets 2 and 3, reference numerals 12 and 13 indicate joint portions of the side edges of the sheets 2 and 3, and reference numeral 14 indicates a joint of the lower edges of the sheets 2 and 3. Indicates the part.
[0011]
The joints 21 to 38 extending in the vertical direction rise upward from the vicinity of the joint 14 at the lower edge of the sheets 2 and 3, but are separated from the joint 11 at the upper edge by a required distance. The upper part of the joint part 21 is continuous with the joint part 12 on the side edge, and the upper part of the joint part 38 is continuous with the joint part 11 on the upper edge.
[0012]
Joining parts 22 and 23, joining parts 24 and 25, joining parts 26 and 27, joining parts 28 and 29, joining parts 30 and 31, joining parts 32 and 33, joining parts 34 and 35, joining parts 36 and 37 are those The upper ends are connected to each other, and the lower ends are connected to each other through joints 41, 42, 43, 44, 45, 46, 47, 48, and 49, whereby vertical vacancies 51 to 59 are provided therebetween. Yes.
[0013]
The upper portions of these vacant chambers 51 to 59 are inserted into the upper vacant chamber 60 along the upper edge joint portion 11. An opening 60 a for supplying gas into the upper vacant space 60 is provided in the sheet 2.
[0014]
Between the joints 22 and 23, between the joints 24 and 25, between the joints 26 and 27, between the joints 28 and 29, between the joints 30 and 31, between the joints 32 and 33, the joint 34 to 35 and between the joint portions 36 and 37 are fin portions 61 to 68 into which no gas is introduced.
[0015]
As is clear from FIG. 1, the length of the lower edge of the sheets 2 and 3 is sufficiently larger than the length of the upper edge. Preferably, the length of the lower edge is 1.0 to 2.0 times, especially 1.1 to 1.5 times the sum of the lengths of the upper edge and both side edges. The lower edge is convex downward with a circular arc or a polygonal shape approximate thereto. The upper edge is a circular arc or a substantially V shape approximate to it, and is concave upward.
[0016]
In the bag 1 thus configured, it short as lower edge is as if drawn to the center, sides on which forms the recess of substantially V-shaped at the same time changes linearly when the swelled bag 1.
[0017]
Bag 1 is folded so as to pull the lower edge upwards, near the intersecting corner portion of the ceiling portion 71 and side portions of Figure 3 to fifth diagram as automobile 70, A pyrazolotriazole -78 and C Pila -79 Placed in. In FIG. 5, 72 indicates a door, and 73 indicates a door glass. Reference numeral 74 denotes a main body of the safety device that stores the folded bag and supplies the gas into the bag 1 to inflate the bag 1.
[0018]
In the bag 1 configured as described above, gas is supplied to the upper vacant space 60 from the opening 60a when the automobile 70 collides sideways or rolls over. This gas inflates the upper vacant chamber 60 and the vertical vacant chambers 51 to 59, and the bag 1 expands along the door window as shown in FIGS. By Check 51 to 59 is inflated, the length of the bottom side of the bag 1 (the length along the longitudinal direction of the vehicle 1) is shorter than when the flat of Figure 1 (a). The expanded lower edges of the bag 1 is as to extend substantially horizontally as second and fourth diagram. In addition, vacancies 51 to 59 extend in the radial direction, and both sides of the bag extend obliquely along the A pillar 78 and the C pillar 79 of the automobile 70. The lower edge of the bag 1 is compared with the upper side, is sufficiently long, the inflated bag 1 is as to cover a wide range of aspects of the automobile, the head may be varied the position of the occupant's head H H The bag 1 is always interposed between the vehicle and the side surface of the automobile. In addition, since the bag is inflated with gas, the impact applied to the head H can be significantly reduced.
[0019]
FIG. 6 is a block diagram of a bag 1 ′ according to another embodiment of the present invention, and shows the same state as in FIG. 1 (a).
[0020]
In the bag 1 'is protruded convex portion 80 from the upper side upward, is provided with openings 60a for introducing gas into the convex portion 80. Other configurations are the same as those of the bag 1, and the same reference numerals denote the same parts.
[0021]
In the above embodiment, the sheets 2 and 3 are made of a synthetic resin, but sheets made of various materials such as a woven fabric impregnated or laminated with a resin can be used. Further, the joining method between the sheets may be sewing.
[0022]
The above bags 1, 1 'are provided with nine vertical vacancies. In the case of a general passenger car, the number of the vertical vacancies is preferably 3 to 20, particularly 5 to 15.
[0023]
In the above-described embodiment, two sheets 2 and 3 are used, but this may be a large sheet folded.
[0024]
【The invention's effect】
As described above, the safety device including the automobile occupant head protection sheet and the automobile occupant head protection sheet according to the present invention sufficiently protects the vehicle occupant head even if the position of the head of the automobile occupant varies. Can do.
[Brief description of the drawings]
FIG. 1A is a front view of a bag according to an embodiment, and FIG. 1B is a cross-sectional view thereof.
2A is a perspective view of an inflated bag 1, and FIG. 2B and FIG. 2C are cross-sectional views thereof.
FIG. 3 is an explanatory view showing an arrangement position of the bag 1 in the automobile.
4 is a front view of the inflated bag 1. FIG.
5 is a cross-sectional view taken along line VV in FIG.
FIG. 6 is a front view of a bag 1 ′ according to another embodiment.
[Explanation of symbols]
1, 1 'bags 11-14, 21-38, 41-49: joints 51-59, 60 vacant spaces 60a openings 61-68 fins

Claims (8)

A bag that is disposed near the crossing corner between the ceiling and the side surface of the interior of an automobile and that expands downward along the side surface by the introduced gas. In a protective bag for the head of an automobile occupant that forms a vacant space filled with gas between the seats by connecting linearly,
The protective bag is used as the empty room.
An upper vacancy along the ceiling,
The upper end is connected to the upper vacancies, and includes at least three vertical vacancies extending in the vertical direction and closed at the lower ends, and provided between the vertical vacancies. It has a fin that is not introduced with gas,
Each sheet has a lower edge of the sheet along the lower side of the protective bag, an upper edge of the sheet along the upper side of the protective bag, and both side edges of the sheet along both sides of the protective bag when the protective bag is inflated. And
Each sheet has a lower edge longer than the upper edge,
In a state where the protective bag is expanded without introducing gas, the upper edge of each sheet is substantially V-shaped with the center in the longitudinal direction being lower than both ends, and the lower edge is formed by a plurality of line segments in a broken line shape. It is a continuous polygonal shape,
When the protection bag is supplied with gas is expanded within the protective bag, under side of the protective bag extends in a straight line in a generally horizontal direction, the A-pillar and C-pillar of the respective both sides of the protection bag automobiles A protective bag for a head of an automobile occupant, characterized by extending along.   The protective bag for the head of an automobile occupant according to claim 1, further comprising an opening for introducing gas into the upper vacancy. 2. The protective bag for an automobile occupant's head according to claim 1, further comprising an opening for projecting a convex portion upward from an upper side of the protective bag and introducing gas into the convex portion. 4. A protective bag for an automobile occupant head according to claim 1, wherein each seat is substantially fan-shaped. 5. The protective bag for an automobile occupant head according to claim 4 , wherein the length of the lower edge of each seat is 1.0 to 2.0 times the sum of the lengths of the upper edge and both side edges. 6. The protective bag for an automobile occupant's head according to claim 4 or 5 , wherein the longitudinal vacancy extends in a radial direction so that a space between the vacant spaces becomes wider toward the lower side .   The protection sheet for the head of an automobile occupant according to any one of claims 1 to 6, wherein the number of longitudinal vacancies is 3 to 20.   A safety device comprising the protective bag for an automobile occupant's head according to any one of claims 1 to 7.

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