Air bag restraint device with a plurality of inflating matters

Abstract

The invention discloses an air bag restraint device with a plurality of inflating matters, which is embedded on the top of a vehicle and is provided with an air generator and an air bag assembly, wherein the air bag assembly is provided with an air inlet and one or more inflating matters, the air inlet is connected with the air generation, the air bag assembly also comprises an air distribution chamber communicated with the air inlet, a plurality of distribution air outlet channels are arranged on the air distribution chamber, each distribution air outlet channel is in a necking state relative to the air distribution chamber, and the air distribution air outlet channels extend into the corresponding inflating matters and are communicated with the insides of the inflating matters. By using difference of internal and external pressures of the distribution air outlet channels, the distribution air outlet channels are opened and closed, and further the purpose of controlling the air quantity and the pressure inside each inflating matter in an air bag restraint device with the plurality of inflating matters is achieved to ensure that each inflating matter can play a better protection role, and the possibility of explosion of the inflating maters is fundamentally avoided.

Description

technical field [0001] The invention relates to the technical field of automobile safety airbags, in particular to an airbag device with a plurality of inflatables which protects the driver and the front row passengers from the front or simultaneously protects the rear passengers from the front. Background technique [0002] With the improvement of automobile safety performance requirements, airbags to protect the driver and front-seat passengers have become standard configurations. For example, the airbag DAB used to protect the driver is installed in the steering wheel, and the airbag PAB used to protect the occupant is installed on the instrument panel. Because the driver's side and the passenger's side used on the current motor vehicle are all single air bag structures, each adopts a separate gas generator to inflate. Generally speaking, the airbags on the driver's side and the passenger's side generally cover more complex parts, such as: door cover, airbag fixing conta...

AI Technical Summary

Problems solved by technology

[0006] However, further studies have found that when there is no occupant on the passenger side of the airbag, after the airbag is opened, the inflatable on the driver's side is pressed by the driver's body, and the gas in it will rush into the inflatable on the passenger's side, causing The air volume of the inflatable on the driver's side decreases and the pressure drops, which cannot effectively protect the driver. However, the air volume in the inflatable on the passenger's side increases, the pressure increases, and sometimes it bursts, causing the airbag components of the entire airbag to deflate quickly and fail to start. to effective protection

[0007] In addition, in some airbags with multiple inflators, sometimes it is necessary to design the multiple inflators into inflators with different pressures, which is technically difficult to achieve and needs to be solved by using multiple gas generators. The increase in structural complexity brought about by

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