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Protection bag and protection apparatus for protecting head of automobile passenger

a protection bag and passenger technology, applied in the field of protection bags, can solve the problems of low inflation efficiency of the protection bag and gas loss

Inactive Publication Date: 2001-11-01
TAKATA CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] It is a second object of the present invention to provide a curtain bag, wherein an ability of expanding quickly is improved.
[0008] It is a third object of the present invention to provide a curtain bag which has a high energy absorbing effect of absorbing collision energy generated when the passenger's head collides with the curtain bag.

Problems solved by technology

In the known curtain bag in which the direction of flow of the gas reduced in pressure by the collision is changed at a right angle when the gas flows into the small chambers, the efficiency of inflation of the bag is low because of the significant loss in the speed of the gas.

Method used

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  • Protection bag and protection apparatus for protecting head of automobile passenger
  • Protection bag and protection apparatus for protecting head of automobile passenger
  • Protection bag and protection apparatus for protecting head of automobile passenger

Examples

Experimental program
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Embodiment Construction

[0046] Preferred embodiments according to the present invention are described below with reference to the drawings. FIG. 1 is a front view of a protection bag according to a first embodiment of the present invention. FIGS. 2 and 3 are sectional views of the protection bag taken along line 2-2 and line 3-3, respectively, in FIG. 1. FIG. 4 is a sectional view taken along line 4-4 in FIG. 2.

[0047] A protection bag 1 is formed such that a passenger-side sheet 2 and an automobile-body-side sheet 3 overlapping each other are sewed or connected with each other by a sewing thread 4, thereby forming chambers between the sheets 2 and 3. The connection may be performed by bonding, welding, or the like instead of sewing by the sewing thread 4.

[0048] A duct 5 extends from an intermediate part between the front and rear ends of the bag 1 to the rear end thereof, and the duct 5 is connected to an inflator 10 disposed in a C-pillar or the like of the automobile. The duct 5 extends along a roof side...

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PUM

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Abstract

A protection bag for an automobile includes an introducing chamber extending along an upper side of the bag, and a plurality of small chambers disposed parallel to each other at a lower side of the introducing chamber. Some of the small chambers have a spiral shape. Gas inlet of the spiral small chamber faces a pass through port. The length of a gas flowing path of the small chamber is greater than the width of the small chamber. The protection bag can avoid outflow of gas from the small chambers and sufficiently absorb the impact on the passenger's head.

Description

BACKGROUND OF THE INVENTION AND RELATED ART STATEMENT[0001] The present invention relates to a protection bag, so-called "curtain bag", for protecting a head of an automobile passenger. In particular, the present invention relates to a bag which inflates along a window in a side door when an automobile collides at a side thereof or turns over sideways. The present invention also relates to a protection apparatus for protecting a head of an automobile passenger by using the protection bag.[0002] A curtain bag of this type, i.e. a protection bag for protecting a head of an automobile passenger, is disclosed in, for example, WO96 / 26087 in which a chamber unit includes a duct extending along an upper side of the bag from the front side of the automobile (front end) to the rear side of the automobile (rear end), and a number of cells or small chambers extending downward from the duct parallel to each other, each communicating with the duct.[0003] In the bag which includes a number of sma...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B60R21/16B60R21/233B60R21/20B60R21/232
CPCB60R21/232B60R2021/23316B60R2021/2617
Inventor KOBAYASHI, ICHIZONAKAZAWA, WATARU
Owner TAKATA CORPORATION