Safety air bag for knee of assistant driver and its automobile

Abstract

The present invention discloses one kind of knee safety airbag for co-driver and the automobile therewith. The knee safety airbag includes an airbag, an air generator, a mantle and a casing for holding the folded air generator and airbag. The knee safety airbag with improved structure, folding mode and expanded shape may be set below the glove box. After being expanded, the knee safety airbag can cover the instrument desk basically to protect the knees and legs of the co-driver effectively.

Description

【Technical field】 [0001] The invention relates to an automobile safety airbag device and the automobile. 【Background technique】 [0002] In the prior art, as a device of the passive safety system, the airbag can effectively reduce the injury of the occupants in the collision, and has been widely used in automobiles, and is no longer limited to the protection of the occupant's head, but Targeted attempts to protect all parts from all angles. The knee airbag belongs to this type. The subdivision of the knee airbag can be divided into the driver's knee airbag and the passenger's knee airbag. As a new type of airbag, the knee airbag focuses on protecting the front driver and the passenger's seat occupants. knees and calves. [0003] The passenger's knee airbag includes an airbag for carrying cushions when in action, a cover for covering the passenger's knee airbag module in the rear panel of the instrument panel, a gas generator for the airbag and its connecting bracket when i...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent publication number CN95211717.7, date of publication on October 16, 1996, utility model name is the application case of , has provided a kind of passenger knee airbag, but the design It has certain difficulties in application, mainly because the location of the airbag is difficult to arrange, which affects the position of the glove box, because the front of the knee is generally just in front of the glove box. There are also differences in sitting postures, so in these cases this co-pilot airbag does not play its due role

[0005] Another example is in the application of Chinese Patent Publication No. 03106112.5, the publication date of September 3, 2003, and the name of the invention called , which discloses a kind of airbag for protecting the passenger's legs, but the technology The plan only focuses on improving the airbag disassembly method to ensure that the airbag can be deployed smoothly and quickly, while ignoring the design of the unfolded shape of the airbag. The unfolded shape has not been designed according to ergonomics. After opening, it mainly unfolds to the left and right sides of the occupant's knee in the horizontal direction to form a simple cuboid shape, which mainly acts on the knee. After unfolding, it is in point contact with the knee. During the unfolding process, it cannot be controlled to unfold along the leg in the upward and downward direction, so The entire leg and foot cannot be fully protected; moreover, it is difficult for the design to ensure that the air cushion does not expand toward the occupant, so that the moment the air cushion is opened, it will also cause excessive impact on the knee; in addition, this technology The plan also ignores the influence of the design of the tear seam on the deployment speed and direction of the airbag, which may lead to a gap between the actual deployment speed and deployment direction and the design goal

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