A gas generator including a plug (24) having a header part (45) and two or more electrode pins (22, 23), a thin-film bridge (25) having electrode pads (41, 42), and a squib (10) in which upon supply of electric current to the thin-film bridge (25) via the electrode pins (22, 23), the thin-film bridg
A gas generator including a plug (24) having a header part (45) and two or more electrode pins (22, 23), a thin-film bridge (25) having electrode pads (41, 42), and a squib (10) in which upon supply of electric current to the thin-film bridge (25) via the electrode pins (22, 23), the thin-film bridge (25) is activated to ignite ignition materials (26, 27), wherein the thin-film bridge (25) is arranged into a hollow (32) prepared at the plug (24) in such a manner that the thin-film bridge (25) is kept approximately on a level with the head (35) of the electrode pins (22, 23) and the header part (45) of the plug (24), the thin-film bridge (25) is connected by wire bonding to the electrode pins (22, 23) at the electrode pad parts (41, 42), and at least either of the electrode pad (41) or (42) of the thin-film bridge (25) is connected by the wire bonding to a metal part of the header part (45) of the plug (24).
대표청구항▼
What is claimed is: 1. A gas generator comprising; a squib having a plug having a header part and two or more electrode pins, and a thin-film bridge having electrode pads, wherein the thin-film bridge is activated to ignite ignition charge, when an electric current is supplied to the thin-film brid
What is claimed is: 1. A gas generator comprising; a squib having a plug having a header part and two or more electrode pins, and a thin-film bridge having electrode pads, wherein the thin-film bridge is activated to ignite ignition charge, when an electric current is supplied to the thin-film bridge via the electrode pins, the gas generator wherein the thin-film bridge of squib is arranged into a hollow prepared at the plug in such a manner that the thin-film bridge is kept approximately on a level with a head of the electrode pins and the header part of the plug, the thin-film bridge is connected by wire bonding to the electrode pins at the electrode pads, and at least either of the electrode pads or of the thin-film bridge is connected by the wire bonding to a metal part of the header part of the plug. 2. The gas generator as set forth in claim 1 further comprising a housing with at least two ends having therein a combustion chamber in which gas generants generating a high temperature gas by burning are sealed and a filter chamber to which a filter member is attached, wherein the gas generants inside the combustion chamber are ignited and burnt by the squib. 3. The gas generator as set forth in claim 2, wherein the housing is 30 mm or less in an outer diameter and the squib is attached to the one end of the housing. 4. The gas generator as set forth in claim 2 or claim 3, wherein the housing is in a closed-end cylindrical shape, which is opened at the one end and closed at the other end. 5. The gas generator as set forth in claim 2 or claim 3, which is provided with a first partition member dividing the combustion chamber and the filter chamber. 6. The gas generator as set forth in claim 2 or claim 3, wherein the other end of the housing is in a bowl shape or in a flat-bottomed shape. 7. The gas generator as set forth in claim 2 or claim 3, wherein propellant is sealed inside the combustion chamber. 8. The gas generator as set forth in claim 7; wherein the gas generants and the propellant are not loaded into a container but directly sealed into the combustion chamber, and the gas generants and the propellant are divided by a second partition member. 9. The gas generator as set forth in claim 5, wherein the first partition member is crimped and fitted into the housing from the outer peripheral end surface thereof. 10. The gas generator as set forth in claim 1, further comprising; a gas cylinder having therein a compressed gas, a housing in which a propellant and the squib are housed, an outer cylindrical member connecting the gas cylinder to the housing and holding them, wherein the gas cylinder having a rupture disk for retaining the pressure and sealing the compressed gas at the end of it facing the housing, the outer cylindrical member having a filter member mounted along the inner periphery of the outer cylindrical member, and a gas retaining space is formed between the gas cylinder inside the outer cylindrical member and the housing. 11. The gas generator as set forth in claim 10, wherein the gas cylinder is in the range from 20 mm to 30 mm in outer diameter. 12. The gas generator as set forth in claim 10 or claim 11, wherein the rupture disk is ruptured by a force of flames from the squib. 13. The gas generator as set forth in claim 10 or claim 11, wherein a plurality of flame discharging openings toward the outer cylindrical member are formed at a side cylindrical part on a bottom of the housing. 14. The gas generator as set forth in any one of claims 1, 2, 3, 8, 9, 10, or 11, wherein the surface of the electrode pads are made of any one of gold, aluminum, nickel or titanium. 15. The gas generator as set forth in any one of claims 1, 2, 3, 8, 9, 10, or 11, wherein a wire used in wire bonding is made of gold or aluminum and the wire is in the range from 10 μm to 500 μm in diameter. 16. The gas generator as set forth in any one of claims 1, 2, 3, 8, 9, 10, or 11, wherein the wire used in the wire bonding is 1 mm or less in loop height.
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이 특허에 인용된 특허 (11)
Troianello Anthony E., Electro-pyrotechnic initiator.
Benson David A. (Albuquerque NM) Bickes ; Jr. Robert W. (Albuquerque NM) Blewer Robert S. (Albuquerque NM), Tungsten bridge for the low energy ignition of explosive and energetic materials.
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