Knee protection air bag apparatus

An airbag and knee technology, which is applied to vehicle components, transportation and packaging, pedestrian/passenger safety layout, etc., can solve the problems of airbag transmission failure, weakening fracture stress, increasing airbag cover movement, etc., and achieves the goal of improving appearance design Effect

Inactive Publication Date: 2007-09-05
TOYODA GOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In such an airbag device for protecting an occupant's knees, since the airbag cover (including the door part and the general part surrounded by vehicle interior parts around it) is movably assembled to the casing (where the folded airbag and the inflator, And installed and fixed to the vehicle body), when the airbag is inflated and deployed, the airbag cover is pushed to the rear side of the vehicle by the inflated airbag, therefore, the amount of movement of the airbag cover to the rear side of the vehicle is increased, thereby weakening the airbag cover The fracture stress from the inflated airbag is received by the part; and, depending on the assembled state of the airbag cover and the case, a gap may be formed between the airbag cover and the case, and therefore, the inflated airbag may protrude from the gap, Therefore, there is a concern that the fracture stress of the airbag cannot be sufficiently transmitted to the door portion of the airbag cover.

Method used

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Examples

Experimental program
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Effect test

no. 1 approach

[0056] As shown in FIGS. 1 and 2, the knee protection airbag device S according to the first embodiment of the present invention is arranged below the steering column 13 on the front side of the vehicle of the occupant MD to protect the knees K (KL and KR) of the occupant MD. ).

[0057] Incidentally, terms related to directions mentioned herein, that is, "front and rear", "vertical", and "left and right" used in this specification are in the state where the knee airbag device S is installed in the vehicle. Next, when defining the forward direction of the vehicle as the front side, based on this definition of the front side, the terms "front and rear", "vertical", and "left and right" related to directions are defined.

[0058] As shown in FIG. 2 , the steering column 13 includes: a main shaft 14 connected to the front side of the steering wheel 10 ; and a column tube 15 covering around the main shaft 14 . A tilt mechanism (not shown), a telescopic mechanism (not shown), etc....

no. 2 approach

[0108] Next, a knee protection airbag device S1 according to a second embodiment of the present invention will be described below with reference to FIGS. 1 , 7 to 9 . In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and only the parts different from the first embodiment will be described below.

[0109] The knee protection airbag device S1 according to the second embodiment, as shown in FIG. KL, KR).

[0110] In the second embodiment, at the same position in the fitting piece 49 as in the first embodiment, that is, on the rear side of the engagement hole 49a, a protrusion 49f protruding upward and serving as a stopper portion is provided. The protrusion 49f is configured as a thicker portion protruding from a part of the mounting piece 49, and has the same width as the left-right direction of the mounting piece 49 (see FIG. 8).

[0111] As shown in FIGS. 7 and 9 , the protrusion 49f is composed of a first i...

no. 3 approach

[0119] Next, a knee protection airbag device S2 according to a third embodiment of the present invention will be described below with reference to FIGS. 1 and 10 . Incidentally, in the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and only the parts different from the first embodiment will be described below.

[0120] The knee protection airbag device S2 according to the third embodiment, as shown in FIG. KL, KR).

[0121] In the third embodiment, as shown in FIG. 10 , a stopper portion 35 is formed on the upper surface of the upper fixing portion 32 a on the rear side of the claw-shaped upper locking portion 34 .

[0122] Similar to the storage part 23 and the upper fixing part 32a, the stopper part 35 is made of sheet metal, and the stopper part 35 is fixed to the upper side by a method similar to that used to fix the upper fixing part 32a to the upper peripheral wall part 24a of the storage part 23. The upper...

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PUM

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Abstract

The present invention provides a knee protection air bag apparatus. In the knee protection air bag apparatus, the air bag cover is assembled to a case which stores therein an air bag and an inflator and also includes an opening formed in the vehicle backward direction portion thereof such that the air bag cover is movable with respect to the case in the vehicle back-and-forth direction, in the vehicle vertical direction and in the vehicle right and left direction and, at the same time, the air bag cover is mounted on its adjoining vehicle interior part (a lower panel). A projecting streak provided on the air bag cover regulates the movement of the air bag cover in the vehicle backward direction with respect to the case, whereby the expanding and developing power of the air bag can be properly transmitted to a breaking portion formed in the lid portion of the air bag cover.

Description

technical field [0001] The present invention relates to a knee protection airbag device comprising an airbag which can pass through [0002] Inflate the inflation gas to expand and protect the knees of the seated occupants. Background technique [0003] Conventionally, as an airbag device for protecting an occupant's knees, there is known an airbag device in which an airbag cover (including a door portion and a general portion surrounded by vehicle interior parts) and a case (in which a folded airbag is accommodated) and the inflator, and installed and fixed to the vehicle body) assembly, so that the airbag cover can move in three directions (that is, in the vertical direction, in the left and right directions, and in the front and rear directions), so that it can absorb assembly errors (for example, see Japan Patent Publication JP 2003-205814A). [0004] And, there is also known another airbag device in which the airbag cover is constructed such that the upper side of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/205B60R21/231B60R21/20B60R21/206B60R21/215B60R21/217
CPCB60R2021/2172B60R21/206B60R2021/23169B60R21/2171
Inventor 榊田克己
Owner TOYODA GOSEI CO LTD
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