Assembly comprising shroud of diffuser of tubular gas generator and flow guide element, tubular gas generator and method for producing tubular gas generator
A gas generator and air guide element technology, applied in vehicle components, transportation and packaging, pedestrian/occupant safety arrangement, etc., can solve the problem of increasing the size of the airbag module, and the outflow area of the tubular gas generator cannot be directly arranged on the airbag or Airbags etc.
Pending Publication Date: 2022-04-08
ZF AUTOMOTIVE GERMANY GMBH
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Problems solved by technology
Although a directed air flow can thus be generated in the airbag, it is not possible to arrange the outflow region of the tubular gas generator directly on or in the airbag, thereby inevitably increasing the size of the airbag module
[0007] Furthermore, the entire gas guidance must always be adapted in a complex manner for use with different airbag modules
Method used
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[0057] figure 1 and figure 2 A tubular gas generator 10 is shown having an assembly 12 mounted on an axial end 11 comprising a shroud 14 and a flow guiding element 16 .
[0058] Such as figure 2 As shown, the tubular gas generator 10 has at the axial end 11 a diffuser 18 which has an outflow region with a plurality of gas outlet openings 20 distributed over the circumference.
[0059] All gas outlet openings 20 are oriented radially (with respect to the axial direction A which coincides with the longitudinal direction of the tubular gas generator 10 ) in such a way that the tubular gas generator 10 itself is preferably push-neutral.
[0060] In the example shown here, the shroud 14 is a tubular piece of diameter slightly larger than the diffuser 18 of the tubular gas generator 10, said shroud having an open end 22 and a closed end 24 (see also Figure 5 ). The open end 22 is fitted over the diffuser 18 of the tubular gas generator 10 and bears against the peripheral wall...
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In an assembly (12) comprising a shroud (14) of a diffuser of a tubular gas generator (10) and a flow guide element (16), the shroud (14) has an outflow opening for the gas generated by the tubular gas generator (10), and the flow guide element (16) has a flow-through section (34) having at least one flow-through opening (42b) through which the gas exits the shroud (14). According to the invention, the flow guide element (16) is inserted into the outflow opening in such a way that the flow-through section (34) protrudes laterally outward through the outflow opening, there protruding relative to the shroud (14), and the edge section of the flow guide element (16) rests on the edge of the outflow opening on the inner side of the wall of the shroud (14). According to the invention, the flow-through section (34) of the flow-guiding element (16) is pushed out of the interior of the shroud (14) through the outflow opening until the edge section lies on the inner side on the edge of the outflow opening, and then the shroud (14) is firmly fixed to the tubular gas generator (10).
Description
technical field [0001] The invention relates to an assembly comprising a shroud and a flow guiding element of a diffuser of a tubular gas generator, a tubular gas generator having such an assembly and a method for manufacturing the tubular gas generator. Background technique [0002] In elongated gas generators, also known as tubular gas generators, the outflow region is usually formed by a large number of gas outlet openings distributed over the circumference of the gas generator. This outflow region is usually realized by diffusers arranged at the axial ends of the tubular gas generator. The gas flows away in a radial direction, and the gas outlets are usually evenly distributed over the perimeter in order to keep the generator push-neutral when it is activated. [0003] In many airbag modules, the tubular gas generator is arranged in such a way that its outflow region is inside the inflatable volume of the airbag. Such designs are found, for example, in curtain side air...
Claims
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Login to View More IPC IPC(8): B60R21/261B60R21/262
CPCB60R21/261B60R2021/2617
Inventor 罗伯特·迪萨姆
Owner ZF AUTOMOTIVE GERMANY GMBH