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Airbag door, method of controlling breakage of tear line, and method of expanding airbag

A control method and airbag door technology, which is applied in vehicle safety arrangements, instrument panels, pedestrian/passenger safety arrangements, etc., can solve the problems of hindering the breakage of the base material, damaging the airbag, and incomplete breakage of the base material, so as to achieve the effect of ensuring the breakage

Inactive Publication Date: 2009-07-29
TOYOTA SHATAI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] (1) Sometimes it is difficult to ensure that the airbag is rapidly and fully deployed based on the correct breakage and opening of the airbag door
[0020] (2) The base material is not completely broken, and burrs are formed at the broken part, which may damage the deployed airbag
[0021] (3) When the proper breakage of the skin cannot be ensured, the breakage of a certain part of the base material may be hindered due to the excessive restraint of the skin
However, at this time, the airbag has an irregular shape, and it is difficult to greatly change and control the deployment direction of the airbag.

Method used

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  • Airbag door, method of controlling breakage of tear line, and method of expanding airbag
  • Airbag door, method of controlling breakage of tear line, and method of expanding airbag
  • Airbag door, method of controlling breakage of tear line, and method of expanding airbag

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Experimental program
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Effect test

Embodiment 1

[0135] (airbag door in Embodiment 1)

[0136] The airbag door 1 of the present embodiment is formed on an instrument panel of a motor vehicle. figure 1 Indicates the airbag door 1 seen from the back side of the instrument panel, figure 2 means along figure 1 Sectional view of line A-A.

[0137] Depend on figure 2 It can be seen that the instrument panel is a laminated structure in which the foam material layer 3 and the skin 4 are formed on the base material 2 . The base material 2 constituting the back of the instrument panel was made of polypropylene and had a thickness of 3 mm. The foam material layer 3 is in contact with the substrate 2 and is made of foamed polypropylene with a thickness of about 2mm. The skin 4 adjoining the layer of foamed material 3 forms the surface of the instrument panel, is made of polyolefin and has a thickness of approximately 0.6 mm.

[0138] Such as figure 1 As shown, on the back of the base material 2, tear grooves 5 are continuously ...

Embodiment 2

[0155] In this example, if Figure 7 As shown, the structure is the same as that of Example 1, except that the tear line 17' for breaking the skin extends linearly from the center line 8 without being bent. The effect of embodiment 2, effect, except not having above-mentioned Figure 6 (a) and Figure 6Except for the action and effect shown in (b), it is the same as in Example 1.

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Abstract

A tear groove with a shape of an airbag door is formed in the back side of a base, the residual thickness of the base measured at the center line of the groove is set smaller than the thickness of the remaining portion of the base, and dotted tear holes for selectively breaking a skin are formed in the centerline portion and near a portion where a side line and the centerline meet. Consequently, when an airbag is inflated and expanded, the base and the skin of the airbag door are synchronously broken in an appropriate order on a portion by portion basis.

Description

technical field [0001] The present invention relates to an airbag door formed invisibly in various vehicle interior parts having a skin on a base material, a method for controlling tearing of the airbag door, and a method for deploying an airbag when the airbag door is broken. [0002] In more detail, firstly, the present invention relates to an airbag door which is subjected to tearing processing for breaking the base material and tearing processing for breaking the skin so that when the airbag is inflated and deployed, the base material and the The epidermis breaks apart from each other in a synchronized and preferably partial breaking sequence. Second, the present invention relates to a breaking control method of a tear line for breaking a tear line of an airbag door in a desired preferred mode at the time of airbag deployment. Thirdly, the present invention relates to an airbag deployment method for guiding an airbag deployed in an optimal direction when a vehicle such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/20B60K37/00B60R21/205B60R21/2165
Inventor 香村隆裕宇佐美纯也林英之村主隆博加藤贤治
Owner TOYOTA SHATAI KK
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