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Airbag device

A technology of airbag device and inflator, which is applied in pedestrian/occupant safety arrangement, vehicle safety arrangement, transportation and packaging, etc., and can solve the problems of reducing the deployment speed of airbags, etc.

Inactive Publication Date: 2014-03-12
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this airbag device, the airbag is deployed in such a way as to pass between the inner airbag and the windshield or between the instrument panel while receiving gas supply through the inner airbag that was deployed earlier, thereby reducing the Airbag Deployment Speed

Method used

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  • Airbag device
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Examples

Experimental program
Comparison scheme
Effect test

no. 2 Embodiment approach

[0074] exist Figure 4 in, through the figure 2 The airbag 42 constituting the airbag device 40 for a passenger's seat according to the second embodiment of the present invention is shown correspondingly to the front sectional view. As shown in the figure, in the airbag device 40 for a passenger's seat, the airbag 42 includes a single reaction force support tube 44 instead of the plurality of reaction force support tubes 28 . In this point, the airbag device 40 for a passenger's seat is different from the airbag device 10 for a passenger's seat according to the second embodiment.

[0075] Such as Figure 4As shown, in the reaction force supporting pipe 44, the lower end portion 44B in the vertical direction of the vehicle communicates with the upper end of the inner sleeve 30 in a sealed state achieved by sewing or the like, and is connected to the inner sleeve 30 through the gas outlet 30C. 30 connections. On the other hand, an upper end portion 44A of the reaction force...

no. 3 Embodiment approach

[0081] exist Figure 5 In FIG. 3 , the operation state of the airbag device 50 for a passenger for the passenger according to the third embodiment of the present invention is shown in a schematic side cross-sectional view. In addition, in Figure 6 in, through the figure 2 The corresponding front sectional view shows the airbag 52 constituting the airbag device 50 for a passenger's seat. As shown in these figures, in the airbag device 50 for the passenger's seat, the airbag 52 has the reaction force support tube 28 as well as a third airbag that inflates and expands below the vehicle relative to the outer airbag 26. The reaction force supports the airbag 54 . In this point, the airbag device 50 for a passenger's seat is different from the airbag device 10 for a passenger's seat that includes the airbag 20 that does not have the reaction force support airbag 54 .

[0082] In this embodiment, the reaction support airbag 54 is provided so as to occupy the space at the lower ...

no. 4 Embodiment approach

[0089] exist Figure 7 in, through the figure 1 The corresponding schematic side cross-sectional view shows the operating state of the airbag device 60 for the passenger according to the fourth embodiment of the present invention. In addition, in Figure 8 in, through the figure 2 The corresponding front sectional view shows the airbag 62 constituting the airbag device 60 for a passenger's seat. As shown in these figures, in the airbag device 60 for a passenger's seat, the airbag 62 has a sub-airbag (knee airbag) 64 as a third airbag in addition to the main airbag 63 as the first airbag. . In this point, the airbag device 60 for a passenger's seat differs from the airbag device 10 for a passenger's seat that includes the airbag 20 that does not have the sub-airbag 64 . Hereinafter, a specific description will be given.

[0090] The airbag module 61 constituting the airbag device 60 for a passenger's seat is provided in the vicinity of the vehicle rearmost portion of the...

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PUM

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Abstract

An airbag device equipped with an airbag having a reduced volume. An airbag (20) inflated and expanded, by supplied gas, from a state folded in the rear of an instrument panel (16) with respect to the vehicle's front-rear direction has an outer bag (26) for restraining the upper body (U) of a vehicle occupant (P) from the front side in the vehicle's front-rear direction and also has a reaction force support tube (28) inflated and expanded, by supplied gas, at the front on the inner side of the outer airbag (26). An inflator (22) supplies gas to each of the outer bag (26) and the reaction force support tube (28). When the outer bag (26) restrains the upper body (U) of the vehicle occupant (P), gas discharge from the reaction force support tube (28) is suppressed by a one-way valve (32) and the pressure in the reaction force support tube (28) is maintained at a pressure higher than the pressure in the outer bag (26).

Description

technical field [0001] The present invention relates to an airbag device that is inflated and deployed in front of a vehicle relative to an occupant to restrain the occupant from moving forward. Background technique [0002] Among the airbag devices for the passenger seat of the so-called top support type provided on the opening of the substantially flat upper surface of the instrument panel, there is known a device for controlling the flow of gas in the airbag. Technology of the inner airbag (for example, refer to Japanese Patent Application Laid-Open No. 11-170955). In this airbag device, the airbag is deployed in such a way as to pass between the inner airbag and the windshield or between the instrument panel while receiving gas supply through the inner airbag that was deployed earlier, thereby reducing the Deployment speed of the airbag. [0003] In addition, in the airbag for the passenger seat, various improvements have been made to the deployed state of the airbag b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R21/233
CPCB60R21/2334B60R21/206B60R21/205B60R2021/23332B60R21/239B60R2021/23324
Inventor 小原孝司
Owner TOYOTA JIDOSHA KK