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Knee airbag and method of folding the same

A technology for folding airbags and airbags, which is applied in vehicle components, pedestrian/occupant safety arrangement, vehicle safety arrangement, etc., can solve the problems of generating vibration, difficulty in inflating airbags smoothly, and difficulty in rapidly deploying and inflating airbags smoothly.

Inactive Publication Date: 2009-06-24
AUTOLIV DEV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Further, due to the rapid expansion of the knee airbag in the prior art 2 when the vehicle collides, scratches may occur under the action of friction between the driver's knee and the airbag, and vibration may occur due to the rapid injection of inflation gas generated by the inflation unit, This makes it difficult to inflate the airbag smoothly
[0018] In addition, rapid deployment and smooth inflation of conventional airbags becomes difficult due to the large deployment width of conventional airbags that may cause resistance from contact with the instrument panel

Method used

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  • Knee airbag and method of folding the same
  • Knee airbag and method of folding the same
  • Knee airbag and method of folding the same

Examples

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Embodiment 1

[0039] The knee airbag according to the present invention has the gathered portions which can be folded to overlap each other in the longitudinal direction in a side view in an inflated state.

[0040] Hereinafter, exemplary embodiments of the present invention will be described based on the corresponding drawings.

[0041] image 3 are front and side views of the knee airbag according to the present invention; Figure 4 is a perspective view of an inflated knee airbag according to the present invention; Figure 5 yes Figure 4 cross-sectional view.

[0042] Such as Figure 3 to Figure 5 As shown, the knee airbag 100 according to the present invention is mounted on a lower crash panel (not shown) of a vehicle, and deployed in a substantially pentagonal shape.

[0043] The airbag 100 may be manufactured by cutting the fabric to the same shape and size and sewing its periphery, or by cutting the fabric in a symmetrical pattern and folding the fabric based on its center line...

Embodiment 2

[0063] Example 2 in Image 6 with Figure 7 shown in . The same parts as in Example 1 will not be described repeatedly. The same reference numerals in Embodiment 2 designate the same components.

[0064] attached Image 6 is a front view and a side view of Embodiment 2 according to the present invention, Figure 7 is a sectional view of Embodiment 2 according to the present invention.

[0065] Such as Image 6 with Figure 7 As shown, the knee airbag in Embodiment 2 according to the present invention further includes an extended airbag 130 extending downward from the lower portion.

[0066] Similar to Embodiment 1, the extension airbag 130 may have a gathered portion 110 formed at a lower portion thereof, and may have at least one tether 131 fixed thereto.

[0067] In addition, the tether 131 has holes (not shown) through which inflation gas passes. Of course, at least one tether 131 may be fixed at different angles and lengths.

[0068] In the knee airbag 100 of the...

Embodiment 3

[0071] attached Figure 8 is a sectional view of Embodiment 3 according to the present invention.

[0072] Such as Figure 8 As shown, Embodiment 3 according to the present invention may be applied to a knee airbag 100a having a shape in which the knee airbag 100 in Embodiment 1 is rotated upside down.

[0073] The knee airbag 100a includes a first chamber 120a, a second chamber 121a, a third chamber 122a, and a fourth chamber 123a. The first chamber 120a has the largest size, and the second chamber 121a, the third chamber 122a, and the fourth chamber have sequentially decreasing sizes.

[0074] In addition, a first tether 125a, a second tether 126a, and a third tether 127a are formed between the chambers 120a, 121a, 122a, and 123a, and have holes 128 through which inflation gas passes.

[0075] Further, the first tether 125a is fixed at a lower angle and wider than the second tether 126a than the second tether 126a, and the third tether 127a is fixed at a higher angle than...

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PUM

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Abstract

Provided is a knee airbag capable of adjusting the height and width of the airbag upon deployment thereof and deploying the airbag along a lower crash panel. The knee airbag is installed at a lower crash panel and has an inflator installed at a predetermined position thereof, wherein the knee airbag has at least one wrinkle part folded in a longitudinal direction of side surfaces thereof. Since an upper part of the knee airbag is expanded more than a lower part thereof, it is possible to more safely protect passenger's knees. In addition, since the knee airbag is expanded upward and downward, it is also possible to protect passenger's ankles and readily adjust the height and width of the knee airbag. Further, the knee airbag is expanded to correspond to an appearance of a lower crash, thereby more safely protecting the passenger.

Description

[0001] Related applications cross-referenced [0002] This application claims the priority of Korean Patent Application No. 2007-0133527 filed on December 18, 2007 and 2007-0133520 filed on December 18, 2007, the disclosures of which are incorporated by reference in their entirety. technical field [0003] The present invention relates to a kind of knee airbag and the method for folding the airbag, more particularly, relates to being installed on the lower impact panel of the vehicle to protect the driver or occupant's knees and the airbag can be unfolded smoothly without colliding with the lower impact panel during the deployment process. An airbag in which interference occurs, and a method of folding the airbag. Background technique [0004] Generally, various safety devices are installed on vehicles to protect occupants in accidents such as collisions, rear-end collisions, rollovers, etc. that occur while the vehicle is running. Such safety devices include seat belts and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/23B60R21/231B60R21/237
CPCB60R21/205B60R21/237B60R2021/01225B60R2021/23538B60R2021/23576
Inventor 洪翼杓郑京元
Owner AUTOLIV DEV AB