Dual stage inflator with extended gas delivery for a vehicular airbag system
A technology for inflators and airbags, applied in vehicle components, vehicle safety arrangements, gas generating devices, etc., can solve problems such as single inflation pressure, achieve cost savings, enhance availability and effectiveness
Inactive Publication Date: 2005-11-30
自生ASP公司
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Problems solved by technology
Most currently known airbags can only provide a single inflation pressure
Method used
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[0036] The presently preferred embodiments of the present invention will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. Following the general description and description of the drawings, it will be easier to understand the components of the present invention, which can be arranged and designed in various configurations. Therefore, if Figure 1 to Figure 4 Said, the following more detailed description of the apparatus, system and method of the present invention is not intended to limit the claims of the present invention, but is only a typical representative of the preferred embodiments of the present invention.
[0037] The present invention provides a device which solves the problems associated with previously known inflators. By utilizing axial flow, inflation gas can be injected into the airbag away from the discharge orifice of the inflator. Therefore, the inflatable curtain can be deployed more evenly to p...
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A dual stage inflator (20) for providing an extended flow of inflation gas to an airbag or inflatable curtain (10) is disclosed. The inflator (20) includes a first gas chamber (66) having an exit orifice (70), the exit orifice (70) having an open configuration and a closed configuration. Additionally, the inflator has a second gas chamber (68) in gaseous communication with the first gas chamber (66). The first and second gas chambers (66, 68) are separated by a flow restrictor (80) positioned between them. This restrictor controls the flow of gas out of the second gas chamber (68). The inflator (20) includes an initiator in communication with the interior of one of the gas chambers that is configured to selectively initiate a flow of gas through the exit orifice (70) of the first gas chamber (66). The exit orifice (70) of the inflator may be disposed within an inlet port (60) of an inflatable curtain (10) to cause inflation gases exiting the inflator (20) through the exit orifices (70) to enter directly into the airbag or inflatable curtain (10).
Description
technical field [0001] The present invention relates to a system and method for protecting vehicle occupants from injury. More particularly, the present invention relates to a dual stage inflator for a vehicle air bag system for providing continuous gas delivery by injecting multiple air streams into the air bag system, such as an inflatable curtain. Background technique [0002] Currently, the inclusion of inflatable safety restraints or air bags is a legal requirement for many new vehicles. In addition to this, inflatable air bags are widely accepted for use in electric motor vehicles and have a reputation for preventing a large number of fatalities and injuries. Some studies suggest that the use of front airbags can reduce the number of accidents in head-on collisions by 25% among drivers who use seat belts, and by more than 30% among drivers who do not use seat belts. Other studies have shown that a combination of seat belts and air bags can reduce serious chest injuri...
Claims
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IPC IPC(8): B01J7/00B60R21/16B60R21/213B60R21/231B60R21/232B60R21/233B60R21/2338B60R21/26B60R21/261B60R21/263B60R21/264B60R21/268B60R21/272
CPCB60R21/213B60R2021/23386B60R21/272B60R2021/23107B60R2021/2615B60R2021/2685B60R21/232B60R2021/2633B60R21/264B60R2021/2612B60R21/26
Inventor 保罗·丁斯代尔大卫·J·格林安东尼·M·扬
Owner 自生ASP公司