WO2002008028A1 - Zündeinrichtung mit einer sollbruchstelle für einen treibsatz des gasgenerators einer insassenschutzvorrichtung in kraftfahrzeugen - Google Patents
Zündeinrichtung mit einer sollbruchstelle für einen treibsatz des gasgenerators einer insassenschutzvorrichtung in kraftfahrzeugen Download PDFInfo
- Publication number
- WO2002008028A1 WO2002008028A1 PCT/EP2001/008684 EP0108684W WO0208028A1 WO 2002008028 A1 WO2002008028 A1 WO 2002008028A1 EP 0108684 W EP0108684 W EP 0108684W WO 0208028 A1 WO0208028 A1 WO 0208028A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- predetermined breaking
- breaking point
- ignition
- ignition device
- base
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000003380 propellant Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 abstract description 18
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
- F42B3/125—Bridge initiators characterised by the configuration of the bridge initiator case
- F42B3/127—Bridge initiators characterised by the configuration of the bridge initiator case the case having burst direction defining elements
-
- 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
- B60R2021/26029—Ignitors
Definitions
- Ignition device with a predetermined breaking point for a propellant charge of the gas generator of an occupant protection device in motor vehicles
- the invention relates to an ignition device for a propellant charge of the gas generator of an occupant protection device in a motor vehicle according to the preamble of patent claim 1.
- Impact protection cushions so-called airbags, which catch the occupant in the event of an accident, or belt tensioners, which pull the seat belts tight in the event of an accident.
- Such an ignition device is e.g. known from DE-Cl-197 33 353.
- This ignition device has a housing with an ignition chamber in which an ignition substance is received, which is ignited electrically in the event of an accident.
- the housing has a cap covering the ignition chamber with a side wall and a base.
- a predetermined breaking point is provided in the floor, which has linear sections produced by material reduction.
- a cross or a star is punched into the base of the cap as a predetermined breaking point, the cross or star arms each extending from the center of the base to the edge.
- an electrical ignition device for a gas generator which has a housing with an ignition chamber which receives the igniter.
- the ignition chamber is covered by a cap that is part of the housing. This cap has notches on the face that act as predetermined breaking points.
- a similarly constructed ignition device according to DE-Al-4026655 has predetermined breaking points in the form of concentric circles in the cap covering the ignition chamber.
- the cap covering the ignition chamber has weakened areas on its side walls which act as predetermined breaking points.
- the "motor vehicle industry calls for the gas generator of the occupant protection device to be as short as possible, in particular if, as when installing the gas generator with the air cushion in the steering wheel, only a small space is available.
- the dimensions of the gas generator in the installation area of the ignition device are fixed and The free spaces between the individual components are sometimes so small that the dimensions of the flaps of the floor that are bent open can hardly be reconciled when the predetermined breaking point is broken: The flaps can then only be partially bent open, so that difficulties can arise with proper ignition of the propellant.
- the propellant charge for the impact protection cushion lies in a ring around the ignition device, so that the propellant gases developed by the igniter in the ignition device, which are emitted in the axial direction of the gas generator, to ignite the propellant charge for the impact protection cushion have to be redirected.
- the invention has for its object to construct an ignition device of the type in question in such a way that a short construction of the gas generator is possible and also ignition of laterally located propellant charges takes place reliably.
- the predetermined breaking point runs in one go approximately in the form of an "S" or a double crescent between opposite edges of the floor.
- the sections of the predetermined breaking point at the edges of the bottom preferably run approximately parallel to the respective edge over a considerable part of the U, which is preferably between a quarter and an eighth of the circumference.
- the section of the predetermined breaking point between the edges of the base preferably runs through the center of the base.
- the regions of the floor lying on both sides of the predetermined breaking point are bent upwards at an angle to the center point.
- the resulting structure is reminiscent of a fan blade.
- the propellant gases developed by the primer are also deflected radially laterally in the form of a fan jet, so that a propellant located there is reliably ignited.
- the section of the predetermined breaking point between the edges of the base essentially follows a straight line.
- a relatively sharp corner is preferably provided between this section and the sections of the predetermined breaking point running approximately parallel to the edge of the floor.
- Figure 1 is a partially sectioned view of an ignition device according to the invention with a cap covering an ignition chamber, in which a predetermined breaking point is provided.
- Figure 2 is a plan view of the cap with the course of the predetermined breaking point.
- FIG. 1 an ignition device 1 is shown with a housing 2, "is provided in which, in a sleeve 3, an ignition chamber 4, in which an inflammable material 5 is received.
- a housing 2 is provided in which, in a sleeve 3, an ignition chamber 4, in which an inflammable material 5 is received.
- the explosive heads protrude 6 of two pins 7, between which a to the Heads 6 is welded resistance wire 8.
- the contact pins 7 are held in a fitting ring 9, the interior of which was poured out with molten glass 10 which then solidifies.
- the housing 2 Part of the housing 2 is a cap 12, which comprises the fitting ring 9 and covers the ignition chamber 4 with the sleeve 3.
- the Cap 12 has a cylindrical side wall 13 and a bottom 14 (located at the top in the drawing).
- the bottom 14 of the cap 12 is provided with a predetermined breaking point 15, which is produced by a stamping.
- the course of the predetermined breaking point 15 in the base 14 of the cap can be seen in FIG. 2.
- the course has an S-shape or, seen from the center to the edge, the shape of a sickle, which are aligned with one another with the "handles".
- the shape can also be called a double sickle.
- the predetermined breaking point has a first section 15a which runs between opposite points on the edge of the floor 14 through the center point M in one go.
- a second or third section 15b or 15c adjoins the two end points of this section 15a, which run in the same direction of rotation and approximately parallel to the edge of the base 14.
- the 'junctions between the first portion 15a and the other two portions 15b and 15c are relatively sharp corners sixteenth
- the sections 15b and 15c are delimited by a sector starting from the center of the circle M with the sector angle ⁇ , which in this case is 90 °. Of course, other sector angles are also possible, which can be smaller or larger; this depends on the desired function of this predetermined breaking point 15.
- the floor 14 is quasi divided into two areas 14a and 14b, which are located on both sides of section 15a of the predetermined breaking point. If the primer 5 is ignited by melting the resistance wire 8, the propellant gases generated tear open the predetermined breaking point 15 and bend the two regions 14a and 14b of the base 14 upwards, as is shown schematically in FIG. 3.
- 3 shows a view of the cap 12 in the direction of arrow P in FIG. 2.
- Parts 14a and 14b are similar to a fan blade; their inclination by the developed propellant gases naturally depends on the amount of the igniter 5 provided in the ignition chamber 4. It can be seen that the propellant gases are virtually deflected at the regions 14a and 14b and also flow away from the cap 12 in a fan-like manner, as is indicated by the arrows T in FIG. 3.
- FIG. 4 schematically shows another course of a predetermined breaking point 15 on the floor 14; this course is much more similar to a written "S" and has a first slightly curved section 15a, which runs through the center M of the bottom 14, and two sections 15b and 15c, which adjoin this section 15a, here a smooth transition is provided .
- FIG. 5 shows the top view of the bottom 14 of an approximately square cap with two different courses of a predetermined breaking point 15 and 15 '.
- the course of the predetermined breaking point 15 is shown as a solid line, that of the predetermined breaking point 15 'in dashed lines.
- the first area 15a of the predetermined breaking point 15 runs through the Center point M parallel to two opposite side walls of the cap 12; At its end points, angular regions 15b and 15c, which run parallel to the edge of the base 14, close.
- the angled areas each end at the height of the center point M, so that each area spans approximately a quarter of the length of the edge of the base 14.
- the first area 15 'a of the second predetermined breaking point 15' runs along a diagonal of the square bottom 14 through the center M; the two end points are followed by sections 15 'b and 15' c, each spanning one eighth of the edge of the base 14 and ending at the center M in FIG. 5.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01971789A EP1303428A1 (de) | 2000-07-26 | 2001-07-26 | Zündeinrichtung mit einer sollbruchstelle für einen treibsatz des gasgenerators einer insassenschutzvorrichtung in kraftfahrzeugen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10036455.1 | 2000-07-26 | ||
DE10036455A DE10036455C2 (de) | 2000-07-26 | 2000-07-26 | Zündeinrichtung mit einer Sollburchstelle für einen Treibsatz des Gasgenerators einer Insassenschutzvorrichtung in Kraftfahrzeugen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002008028A1 true WO2002008028A1 (de) | 2002-01-31 |
Family
ID=7650309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/008684 WO2002008028A1 (de) | 2000-07-26 | 2001-07-26 | Zündeinrichtung mit einer sollbruchstelle für einen treibsatz des gasgenerators einer insassenschutzvorrichtung in kraftfahrzeugen |
Country Status (4)
Country | Link |
---|---|
US (1) | US20030177936A1 (de) |
EP (1) | EP1303428A1 (de) |
DE (1) | DE10036455C2 (de) |
WO (1) | WO2002008028A1 (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002073117A1 (de) * | 2001-03-12 | 2002-09-19 | Nico-Pyrotechnik Hanns-Jürgen Diederichs GmbH & Co. KG | Anzündvorrichtung für die treibladung einer insassenschutzvorrichtung |
FR2852388A1 (fr) * | 2003-03-12 | 2004-09-17 | Livbag Snc | Capuchon metallique pour allumeur electro-pyrotechnique |
EP1489376A1 (de) * | 2002-03-28 | 2004-12-22 | Toyota Jidosha Kabushiki Kaisha | Zünder |
FR2877082A1 (fr) * | 2004-10-21 | 2006-04-28 | Ncs Pyrotechnie & Tech | Initiateur comportant une zone de fragilisation |
US8058640B2 (en) | 2006-09-11 | 2011-11-15 | President And Fellows Of Harvard College | Branched nanoscale wires |
FR3030715A1 (fr) * | 2014-12-22 | 2016-06-24 | Ncs Pyrotechnie Et Tech Sas | Etui d'allumeur |
AT516929A1 (de) * | 2015-03-10 | 2016-09-15 | Hirtenberger Automotive Safety Gmbh & Co Kg | Pyrotechnischer Gasgenerator |
WO2018138305A1 (fr) * | 2017-01-30 | 2018-08-02 | Autoliv Development Ab | Opercule d'etancheite pour dispositif generateur de gaz |
DE102010033417B4 (de) | 2010-08-04 | 2023-12-28 | Zf Airbag Germany Gmbh | Anzündereinheit mit Kunststoffumspritzung |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8327765B2 (en) * | 2003-03-03 | 2012-12-11 | Schott Ag | Metal fixing material bushing and method for producing a base plate of a metal fixing material bushing |
JP2005069666A (ja) * | 2003-08-06 | 2005-03-17 | Takata Corp | イニシエータ及びガス発生器 |
DE102004005687B4 (de) * | 2004-02-05 | 2018-05-17 | Trw Automotive Gmbh | Gurtstraffersystem für Kraftfahrzeuge |
US8733250B2 (en) | 2006-01-27 | 2014-05-27 | Schott Ag | Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device |
DE102010045641A1 (de) | 2010-09-17 | 2012-03-22 | Schott Ag | Verfahren zur Herstellung eines ring- oder plattenförmigen Elementes |
US10684102B2 (en) | 2010-09-17 | 2020-06-16 | Schott Ag | Method for producing a ring-shaped or plate-like element |
US10721161B2 (en) | 2015-08-28 | 2020-07-21 | Vmware, Inc. | Data center WAN aggregation to optimize hybrid cloud connectivity |
US10760880B2 (en) * | 2017-06-22 | 2020-09-01 | Autoliv Development Ab | Igniter case |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4001864A1 (de) * | 1989-02-03 | 1990-08-23 | Trw Vehicle Safety Systems | Zuender fuer luftsack-treibsaetze |
DE4026655A1 (de) * | 1990-08-23 | 1992-02-27 | Diehl Gmbh & Co | Elektrischer detonator |
DE4429178A1 (de) * | 1993-08-25 | 1995-03-02 | Ems Patvag Ag | Pyrochemische Zündkette in einem Gasgenerator |
US5821446A (en) * | 1997-05-27 | 1998-10-13 | Trw Inc. | Inflator for an inflatable vehicle occupant protection device |
DE19733353C1 (de) * | 1997-08-01 | 1998-12-10 | Nico Pyrotechnik | Zündeinrichtung für eine Insassenschutzvorrichtung eines Kraftfahrzeuges |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4068862A (en) * | 1974-11-20 | 1978-01-17 | Nissan Motor Co., Ltd. | Safety bag inflation apparatus with extendible guard member against contact of bag with heated gas generator |
US5454320A (en) * | 1992-10-23 | 1995-10-03 | Quantic Industries, Inc. | Air bag initiator |
US5803492A (en) * | 1994-05-31 | 1998-09-08 | Morton International, Inc. | Fuel containment for fluid fueled airbag inflators |
US6164208A (en) * | 1998-07-14 | 2000-12-26 | Chung Shan Institute Of Science & Technology | Igniter for vehicle airbag inflator |
DE10026329A1 (de) * | 2000-05-26 | 2001-11-29 | Bosch Gmbh Robert | Zündvorrichtung |
-
2000
- 2000-07-26 DE DE10036455A patent/DE10036455C2/de not_active Expired - Fee Related
-
2001
- 2001-07-26 US US10/333,936 patent/US20030177936A1/en not_active Abandoned
- 2001-07-26 WO PCT/EP2001/008684 patent/WO2002008028A1/de not_active Application Discontinuation
- 2001-07-26 EP EP01971789A patent/EP1303428A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4001864A1 (de) * | 1989-02-03 | 1990-08-23 | Trw Vehicle Safety Systems | Zuender fuer luftsack-treibsaetze |
DE4026655A1 (de) * | 1990-08-23 | 1992-02-27 | Diehl Gmbh & Co | Elektrischer detonator |
DE4429178A1 (de) * | 1993-08-25 | 1995-03-02 | Ems Patvag Ag | Pyrochemische Zündkette in einem Gasgenerator |
US5821446A (en) * | 1997-05-27 | 1998-10-13 | Trw Inc. | Inflator for an inflatable vehicle occupant protection device |
DE19733353C1 (de) * | 1997-08-01 | 1998-12-10 | Nico Pyrotechnik | Zündeinrichtung für eine Insassenschutzvorrichtung eines Kraftfahrzeuges |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002073117A1 (de) * | 2001-03-12 | 2002-09-19 | Nico-Pyrotechnik Hanns-Jürgen Diederichs GmbH & Co. KG | Anzündvorrichtung für die treibladung einer insassenschutzvorrichtung |
EP1489376A1 (de) * | 2002-03-28 | 2004-12-22 | Toyota Jidosha Kabushiki Kaisha | Zünder |
EP1489376A4 (de) * | 2002-03-28 | 2005-12-28 | Toyota Motor Co Ltd | Zünder |
US7357083B2 (en) | 2002-03-28 | 2008-04-15 | Toyota Jidosha Kabushiki Kaisha | Initiator |
FR2852388A1 (fr) * | 2003-03-12 | 2004-09-17 | Livbag Snc | Capuchon metallique pour allumeur electro-pyrotechnique |
WO2004083771A1 (fr) * | 2003-03-12 | 2004-09-30 | Livbag Sas | Capuchon metallique pour allumeur electro-pyrotechnique |
FR2877082A1 (fr) * | 2004-10-21 | 2006-04-28 | Ncs Pyrotechnie & Tech | Initiateur comportant une zone de fragilisation |
WO2006045726A1 (en) * | 2004-10-21 | 2006-05-04 | Autoliv Development Ab | An initiator including a zone of weakness |
US7730837B2 (en) | 2004-10-21 | 2010-06-08 | Autoliv Development Ab | Initiator including a zone of weakness |
US8058640B2 (en) | 2006-09-11 | 2011-11-15 | President And Fellows Of Harvard College | Branched nanoscale wires |
DE102010033417B4 (de) | 2010-08-04 | 2023-12-28 | Zf Airbag Germany Gmbh | Anzündereinheit mit Kunststoffumspritzung |
FR3030715A1 (fr) * | 2014-12-22 | 2016-06-24 | Ncs Pyrotechnie Et Tech Sas | Etui d'allumeur |
CN107110629A (zh) * | 2014-12-22 | 2017-08-29 | 奥托立夫开发公司 | 点火器壳体 |
CN107110629B (zh) * | 2014-12-22 | 2019-02-22 | 奥托立夫开发公司 | 点火器壳体 |
US10584945B2 (en) | 2014-12-22 | 2020-03-10 | Autoliv Development Ab | Igniter case |
WO2016102293A1 (fr) * | 2014-12-22 | 2016-06-30 | Autoliv Development Ab | Etui d'allumeur |
AT516929A1 (de) * | 2015-03-10 | 2016-09-15 | Hirtenberger Automotive Safety Gmbh & Co Kg | Pyrotechnischer Gasgenerator |
AT516929B1 (de) * | 2015-03-10 | 2018-05-15 | Hirtenberger Automotive Safety Gmbh & Co Kg | Pyrotechnischer Gasgenerator |
WO2018138305A1 (fr) * | 2017-01-30 | 2018-08-02 | Autoliv Development Ab | Opercule d'etancheite pour dispositif generateur de gaz |
FR3062475A1 (fr) * | 2017-01-30 | 2018-08-03 | Livbag Sas | Opercule d'etancheite pour dispositif generateur de gaz |
Also Published As
Publication number | Publication date |
---|---|
DE10036455C2 (de) | 2002-06-20 |
EP1303428A1 (de) | 2003-04-23 |
DE10036455A1 (de) | 2002-02-21 |
US20030177936A1 (en) | 2003-09-25 |
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