WO1997008018A3 - Early detonation device - Google Patents

Early detonation device Download PDF

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Publication number
WO1997008018A3
WO1997008018A3 PCT/EP1996/003430 EP9603430W WO9708018A3 WO 1997008018 A3 WO1997008018 A3 WO 1997008018A3 EP 9603430 W EP9603430 W EP 9603430W WO 9708018 A3 WO9708018 A3 WO 9708018A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas generator
generator casing
detonation device
early
container
Prior art date
Application number
PCT/EP1996/003430
Other languages
German (de)
French (fr)
Other versions
WO1997008018A2 (en
Inventor
Franz Fuerst
Juergen Mayer
Original Assignee
Temic Bayern Chem Airbag Gmbh
Franz Fuerst
Juergen Mayer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Temic Bayern Chem Airbag Gmbh, Franz Fuerst, Juergen Mayer filed Critical Temic Bayern Chem Airbag Gmbh
Publication of WO1997008018A2 publication Critical patent/WO1997008018A2/en
Publication of WO1997008018A3 publication Critical patent/WO1997008018A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

The invention pertains to an early detonation device (9) for detonating the propellant charge of an airbag gas generator for a vehicle occupant protection system, based on local thermal heating of the gas generator casing (1). The early detonation device is provided with a container (10) filled with a primary detonating agent (11), e.g. in powder form, which ignites spontaneously at temperatures below 400 °C, preferably between 150 and 200 °C. The container (10) inside the gas generator casing (1) is in close heat-conducting contact (12) with an upper section (2) of the gas generator casing (1) and immediately adjacent to a detonator (7) filled with a secondary detonating agent; this detonator (7) can be detonated by the primary detonating agent (11) and then detonates the propellant charge of the airbag gas generator. The early detonation device (9) is characterised in that the container (10) with the primary detonating agent (11) is designed and arranged inside the gas generator casing (1) in such a way as to be in close heat-conducting surface contact with a lower section (3) of the gas generator casing (1) opposite the upper section (2). With this arrangement, and with minimal construction costs, the delay time between the commencement of local heating of the gas generator casing (1) and detonation of the early detonation device (9) is reduced and the response probability increased.
PCT/EP1996/003430 1995-08-29 1996-08-03 Early detonation device WO1997008018A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19531666.5 1995-08-29
DE1995131666 DE19531666A1 (en) 1995-08-29 1995-08-29 Early ignition device

Publications (2)

Publication Number Publication Date
WO1997008018A2 WO1997008018A2 (en) 1997-03-06
WO1997008018A3 true WO1997008018A3 (en) 1997-03-27

Family

ID=7770619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003430 WO1997008018A2 (en) 1995-08-29 1996-08-03 Early detonation device

Country Status (2)

Country Link
DE (1) DE19531666A1 (en)
WO (1) WO1997008018A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19914241A1 (en) * 1999-03-29 2000-10-05 Nico Pyrotechnik Ignition device for airbags in motor vehicles has advanced ignition unit to ignite propellant when ambient temperature has reached 170oC
EP1101668B1 (en) 1999-11-22 2004-07-14 Hirschmann Automotive GmbH Igniter
DE102007023046A1 (en) * 2007-05-16 2008-11-20 Trw Airbag Systems Gmbh Automotive airbag gas generator has plastic base body with heat bridge to early ignition charge
DE102007060451A1 (en) * 2007-12-12 2009-06-18 Takata-Petri Ag Gas generator for air bag module for vehicle occupant restraint system, has gas generator housing, in which chamber for receiving propellant for igniting main gas set in another chamber
CN101873953B (en) 2007-10-05 2012-11-28 高田-彼得里公开股份有限公司 Gas generator for an air bag module
DE102011012773B4 (en) * 2011-03-01 2024-03-07 Zf Airbag Germany Gmbh Gas generator with early ignition agent

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625960A1 (en) * 1988-01-19 1989-07-21 Talley Automotive Prod SECONDARY SAFETY RESTRAINT DEVICE FOR PASSENGERS OF A MOTOR VEHICLE
EP0369579A1 (en) * 1988-09-16 1990-05-23 Talley Automotive Products, Inc. Lightweight non-welded gas generator with rolled spun lip
JPH05185899A (en) * 1992-01-10 1993-07-27 Takata Kk Inflator of air bag device
DE4301794C1 (en) * 1993-01-23 1994-05-26 Temic Bayern Chem Airbag Gmbh Airbag gas generator with a self-igniter
EP0665138A2 (en) * 1993-12-28 1995-08-02 Sensor Technology Co., Ltd. Gas generator, squib for air bag and spontaneous firing explosive composition

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561675A (en) * 1984-04-02 1985-12-31 Morton Thiokol, Inc. Auto ignition device
CA1293275C (en) * 1988-01-19 1991-12-17 Ronald Zander Deflector ring for use with inflators for passive restraint devices
US4858951A (en) * 1988-05-04 1989-08-22 Trw Vehicle Safety Systems, Inc. Igniter for gas generating material
DE3824469C1 (en) * 1988-07-19 1990-01-04 Bayern-Chemie Gesellschaft Fuer Flugchemische Antriebe Mbh, 8012 Ottobrunn, De
JP3115381B2 (en) * 1990-11-28 2000-12-04 デイナミート ノーベル アクチエンゲゼルシヤフト Gas generators for airbags, especially tubular gas generators
US5100170A (en) * 1991-01-22 1992-03-31 Trw Vehicle Safety Systems Inc. Auto-ignition device for an air bag inflator
US5350193A (en) * 1993-06-22 1994-09-27 Nippon Koki Co., Ltd. Air bag inflation gas generator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625960A1 (en) * 1988-01-19 1989-07-21 Talley Automotive Prod SECONDARY SAFETY RESTRAINT DEVICE FOR PASSENGERS OF A MOTOR VEHICLE
EP0369579A1 (en) * 1988-09-16 1990-05-23 Talley Automotive Products, Inc. Lightweight non-welded gas generator with rolled spun lip
JPH05185899A (en) * 1992-01-10 1993-07-27 Takata Kk Inflator of air bag device
DE4301794C1 (en) * 1993-01-23 1994-05-26 Temic Bayern Chem Airbag Gmbh Airbag gas generator with a self-igniter
EP0665138A2 (en) * 1993-12-28 1995-08-02 Sensor Technology Co., Ltd. Gas generator, squib for air bag and spontaneous firing explosive composition

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 610 (M - 1508) 10 November 1993 (1993-11-10) *

Also Published As

Publication number Publication date
DE19531666A1 (en) 1997-03-06
WO1997008018A2 (en) 1997-03-06

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DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
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122 Ep: pct application non-entry in european phase