Mosa Industrial Corporation

Chung Shan Institute of Science and Technology

Long-Ming Tsai

Chia-Jung Lin

Yun-Hsien Lin

Teh-Hsin Wang

Han-Le Wang

Jing-Huei Wang

Tai Ho Tsai

Ming-Teh Hsu

Yuh-Hsien Lin

An airbag inflator is provided, including an inflator module, an exhaust hood, a filter element, exhaust holes, and a flow-guiding loop. The exhaust hood corresponds to one end of the inflator module to form an accommodating space in a concave shape, and the exhaust hood is set on the inflator module by the accommodating space. The filter element is disposed on the sidewall of the exhaust hood and covers the exhaust holes. The exhaust holes are disposed on the sidewall of the exhaust hood and are adjacent to the exhaust hood opposite to one end of the inflator module. One side of the flow-guiding loop is attached to the exhaust hood corresponding to one side of the inflator module, and the other side of the flow-guiding loop extending to the inflator module to form an annular convex rib.

Airbag inflator with flow-guiding loop

A dual-stage hybrid inflator and triggering a method thereof are provided. The dual-stage hybrid inflator includes a main casing, a central pipe, and a disc set, a first propellant chamber assembly, a second propellant chamber assembly, a pressurized gas, a first igniter assembly, a second igniter assembly and an exhaust hood. The main casing includes a bottom housing and an upper housing. The central pipe is fixed with the bottom housing and passed through the upper housing. A convective hole is disposed on the central pipe. The disc set, which is used to prevent the gas escaping from the main casing, is disposed on the top of the central pipe. The doublet propellant chamber, which is filled with different dosage of propellant, is initiated by the igniters disposed thereon in order to generate various degrees of gas depended on various degrees of collision.

Dual stage hybrid inflator and method of triggering the same

The present invention discloses a hybrid inflator of an airbag. The hybrid inflator of the airbag includes a main casing, a central channel, a vent tube, a rupture disc, an inner cover group, an igniter group, a first buffering pad, a second buffering pad and a diffuser. The main casing includes a bottom housing and an upper housing. The central channel is fixed with the bottom housing and passed through the upper housing. A convective hole is disposed on the central channel. The vent tube is covered onto the external central channel and has a throttle bore thereon. The first buffering pad is disposed on a bottom of the inter air chamber. The second buffering pad is disposed in the inner air chamber to separate a space for propellant. The diffuser is correspondingly covered and fixed on the main casing.

Hybrid inflator of airbag

A hybrid gas inflator utilizes a combustion chamber to generate a gas of hot jet. The gas pushes a piston downward and flows through a hole of the piston along its axis so as to break a pressure-resisting disc. The gas is then injected into a high-pressure gas container to heat up another gas therein. The hybrid gas gets expanded and is ejected through a plurality of exhaust outlets. This hybrid gas inflator can produce larger gas volume and therefore can reduce the size and weight of an inflator. Further, the impurities in the hybrid gas are congealed fast after two stages of pressure drop and can be removed easily by a filter.

Hybrid gas inflator

An igniter for vehicle airbag inflator includes a stainless steel casing, an ignition unit, a pyrotechnic powder holder, and a stainless steel shell, the casing defining a receiving chamber, the ignition unit being mounted in the receiving chamber within the casing, the ignition unit including a pair of electrodes, a nickel chrome wire connected between the electrodes at one end, and an electrically insulative packing block fastened to the electrodes to fix the electrodes in a separated manner, the pyrotechnic powder holder being covered on the ignition unit and holding a high burning rate pyrotechnic powder, the stainless steel shell being covered around the pyrotechnic powder holder for protecting it from damage. The igniter can be adjusted to achieve ignition time delay within 2 milli-seconds, and maximum pressure within 40.about.60 Bar.

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Taipei, Taiwan

Long-Ming Tsai