EP1327850A1 - Pyrotechnischer elektrischer Anzünder - Google Patents

Pyrotechnischer elektrischer Anzünder Download PDF

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Publication number
EP1327850A1
EP1327850A1 EP02290061A EP02290061A EP1327850A1 EP 1327850 A1 EP1327850 A1 EP 1327850A1 EP 02290061 A EP02290061 A EP 02290061A EP 02290061 A EP02290061 A EP 02290061A EP 1327850 A1 EP1327850 A1 EP 1327850A1
Authority
EP
European Patent Office
Prior art keywords
initiator according
plastic
subassembly
height
initiator
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP02290061A
Other languages
English (en)
French (fr)
Other versions
EP1327850B1 (de
Inventor
Stéphane Phelep
Philippe Pinet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Airbag Germany GmbH
Original Assignee
Davey Bickford SAS
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
Priority to EP02290061A priority Critical patent/EP1327850B1/de
Application filed by Davey Bickford SAS filed Critical Davey Bickford SAS
Priority to AT02290061T priority patent/ATE326679T1/de
Priority to ES02290061T priority patent/ES2261605T3/es
Priority to DE60211462T priority patent/DE60211462T2/de
Priority to TW092100506A priority patent/TWI282403B/zh
Priority to HU0500019A priority patent/HUP0500019A2/hu
Priority to US10/501,237 priority patent/US7293504B2/en
Priority to PCT/FR2003/000080 priority patent/WO2003058154A1/fr
Priority to AU2003214308A priority patent/AU2003214308A1/en
Priority to JP2003558418A priority patent/JP4295115B2/ja
Priority to CZ2004-794A priority patent/CZ304930B6/cs
Priority to PL371132A priority patent/PL203293B1/pl
Priority to CA002472652A priority patent/CA2472652A1/fr
Priority to CNB038021331A priority patent/CN100365374C/zh
Priority to KR1020047010757A priority patent/KR100916824B1/ko
Priority to MXPA04006624A priority patent/MXPA04006624A/es
Publication of EP1327850A1 publication Critical patent/EP1327850A1/de
Priority to ZA200405412A priority patent/ZA200405412B/en
Application granted granted Critical
Publication of EP1327850B1 publication Critical patent/EP1327850B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F42B3/195—Manufacture

Definitions

  • the present invention relates to an initiator An electro.
  • the initiator There are two main categories of initiator.
  • the first uses "glass-to-metal crossing" type bases and the second to initiators with base or crossing type "plastic".
  • the initiators belonging to the first category are often seen as synonymous with insurance hermeticity and infallible protection of the compositions pyrotechnics and / or explosives against the effects of extreme environments (humidity among others).
  • glass-to-metal crossings are sensitive to mechanical and thermal stresses that can be applied during the different stages of their process assembly or during the assembly stages (crimping, welding, ...) said initiators to an application device civil pyrotechnics (for example, pretensioners, cushions inflatable for automotive safety), military or space.
  • the initiators on plastic traverse suffer for their of a hermeticity problem related to the plastic material (for example, moisture-sensitive polyamide) selected for their realization or at their internal joints (by clipping, gluing ..) not waterproof.
  • plastic material for example, moisture-sensitive polyamide
  • the current initiators that they belong to one any of the above categories include usually several subassemblies to assemble making the total cost of such an expensive device.
  • the initiators of the first category are significantly more expensive because the necessary preparation (surfacing, %) of said crossings "Glass-metal”.
  • the objective of the present invention is to propose a electropyrotechnic initiator of plastic type, simple in its design and in its operating mode, compact and economic having excellent hermetic qualities.
  • the electropyrotechnic initiator comprises a housing 1.
  • This housing 1 comprises a first 2 and second 3 subsets.
  • the first subset 2 comprises a wall 4 made of plastic integral with a bottom 5 also made of plastic, the first subassembly 2 being made in one piece.
  • This first subassembly 2 is called a container.
  • Said container 2 receives a pyrotechnic charge 6 by a dry loading process.
  • the load 6 comprises at less a composition.
  • the containing 2 receives a first composition 7 called secondary composition and a second composition 8 called primary composition.
  • Each of the compositions of the load pyrotechnic 6 is mass loaded and is precompressed.
  • the precompression is carried out with a pressure below 120 bar for the primary composition 8 and with a pressure greater than 150 bar for the composition 7.
  • the final compression effort is ensured when the hermetic assembly of the first subassembly 2 with a second subassembly 3 comprising the electrical part of the initiator, said subset 3 being also called base.
  • the assembly is performed by ultrasonic welding ensuring a extreme hermeticity.
  • the first 7 and second 8 compositions are free of heavy metals in an effort to respect the environment. said compositions are also resistant to warming up caused by ultrasonic welding which is of the order of 260 ° C.
  • the inner diameter D 1 of the first subassembly 2 is less than 5.6 mm.
  • the adaptation of the interior volume of the container 2 to allow the loading of pyrotechnic compositions of different types and particle size is therefore ensured by the variation of the height of said container 2.
  • the small inner diameter of the first subassembly 2 advantageously allows not to having to use an intermediate pyrotechnic container such as, for example, a ring attached to the base 3 to limit the pyrotechnic charge 6. This limitation of the pyrotechnic charge 6 also offers increased safety without risk to the reliability of pyrotechnic operation insofar as the thickness of the charged composition is sufficient.
  • the second subassembly 3, the plastic base has a main axis 10 and is traversed by at least two pins 11, 12 in the direction of said axis 10.
  • the pins 11, 12 are interconnected by an electrical bridge 13 on one face 14 of said subassembly 3.
  • the electrical bridge 13 is of the resistive type.
  • it is either a filament or a metal layer.
  • the electrical bridge 13 is of the semiconductor type.
  • Said face 14 is recessed symmetrically over a height H and a depth L so that the outer diameter of the portion of the second subassembly 3 having been recessed is D 2 .
  • the height H is between 2 and 3 mm.
  • the inside diameter D 1 of the first subset 2 is smaller than the outside diameter D 2 .
  • these parts of the first 2 and second 3 subassemblies facing each other during ultrasonic welding, this difference in diameter between D 1 and D 2 ensures a maximum hermeticity and a sufficient dielectric strength for the insulation of the internal parts. conductors 11, 12 of the initiator.
  • the weld joint 16 is a shear joint.
  • the recessed face 14 of the second subassembly 3 also has a symmetrical recess 17 of height h and width 1 to form an elevation island of the electrical bridge, this ensuring a good intimacy between the electric bridge 13 and the primary composition 8.
  • h is between 0.5 and 1.0 mm and the width l is between 0.2 and 0.8 mm.
  • the second subset 3 is overmolded on pins 11, 12.
  • - pin - feed means current for the initiator.
  • the pins 11, 12 comprise electrodes.
  • the electrodes are striated. These streaks 18 ensure not only a hermetic barrier of the initiator along the pins 11, 12 but they also facilitate the fixation of the plastic material during overmolding.
  • the pins 11, 12 are son.
  • the first 2 and second 3 subassemblies are made of the same plastic material to allow their assembly by ultrasonic welding.
  • the plastic used to make the first 2 and second 3 subassemblies is a material with low moisture absorption.
  • the plastic is a polyketone.
  • the plastic is a polybutylene teraphthalate (PBT).
  • the plastic material is a polyamide.
  • polyamides that may be used according to the invention mention may be made of polyamides with low moisture uptake, and in particular the polyamide of formula: designated in this application by PA 6.12.
  • FIG. 1 shows a 16 ultrasound solder joint that does not include a seal in shear but a semi-shear joint.
  • the present pyrotechnic initiator can advantageously be used for the realization of application device civil, military and space pyrotechnics.
  • the initiator in polyketone, it can advantageously be put in contact with or placed near vapors or liquids chemical products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Air Bags (AREA)
  • Lighters Containing Fuel (AREA)
  • Conductive Materials (AREA)
  • Push-Button Switches (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP02290061A 2002-01-10 2002-01-10 Pyrotechnischer elektrischer Anzünder und Montageverfahren Expired - Lifetime EP1327850B1 (de)

Priority Applications (17)

Application Number Priority Date Filing Date Title
AT02290061T ATE326679T1 (de) 2002-01-10 2002-01-10 Pyrotechnischer elektrischer anzünder und montageverfahren
ES02290061T ES2261605T3 (es) 2002-01-10 2002-01-10 Iniciador electropirotecnico.
DE60211462T DE60211462T2 (de) 2002-01-10 2002-01-10 Pyrotechnischer elektrischer Anzünder und Montageverfahren
EP02290061A EP1327850B1 (de) 2002-01-10 2002-01-10 Pyrotechnischer elektrischer Anzünder und Montageverfahren
HU0500019A HUP0500019A2 (hu) 2002-01-10 2003-01-10 Villamos pirotechnikai iniciáló gyutacs, valamint eljárás annak összeszerelésére
US10/501,237 US7293504B2 (en) 2002-01-10 2003-01-10 Electro-pyrotechnic initiator
PCT/FR2003/000080 WO2003058154A1 (fr) 2002-01-10 2003-01-10 Initiateur electropyrotechnique.
AU2003214308A AU2003214308A1 (en) 2002-01-10 2003-01-10 Electro-pyrotechnic initiator
TW092100506A TWI282403B (en) 2002-01-10 2003-01-10 Electropyrotechnic initiator
JP2003558418A JP4295115B2 (ja) 2002-01-10 2003-01-10 電気式ロケット点火装置
CZ2004-794A CZ304930B6 (cs) 2002-01-10 2003-01-10 Elektrický pyrotechnický iniciátor
PL371132A PL203293B1 (pl) 2002-01-10 2003-01-10 Zapalnik elektro-pirotechniczny i sposób montażu zapalnika elektro-pirotechnicznego
CA002472652A CA2472652A1 (fr) 2002-01-10 2003-01-10 Initiateur electropyrotechnique
CNB038021331A CN100365374C (zh) 2002-01-10 2003-01-10 电烟火起爆器
KR1020047010757A KR100916824B1 (ko) 2002-01-10 2003-01-10 전자불꽃 기폭제
MXPA04006624A MXPA04006624A (es) 2002-01-10 2003-01-10 Iniciador electropirotecnico.
ZA200405412A ZA200405412B (en) 2002-01-10 2004-07-07 Electro-pyrotechnic initiator.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02290061A EP1327850B1 (de) 2002-01-10 2002-01-10 Pyrotechnischer elektrischer Anzünder und Montageverfahren

Publications (2)

Publication Number Publication Date
EP1327850A1 true EP1327850A1 (de) 2003-07-16
EP1327850B1 EP1327850B1 (de) 2006-05-17

Family

ID=8185696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290061A Expired - Lifetime EP1327850B1 (de) 2002-01-10 2002-01-10 Pyrotechnischer elektrischer Anzünder und Montageverfahren

Country Status (17)

Country Link
US (1) US7293504B2 (de)
EP (1) EP1327850B1 (de)
JP (1) JP4295115B2 (de)
KR (1) KR100916824B1 (de)
CN (1) CN100365374C (de)
AT (1) ATE326679T1 (de)
AU (1) AU2003214308A1 (de)
CA (1) CA2472652A1 (de)
CZ (1) CZ304930B6 (de)
DE (1) DE60211462T2 (de)
ES (1) ES2261605T3 (de)
HU (1) HUP0500019A2 (de)
MX (1) MXPA04006624A (de)
PL (1) PL203293B1 (de)
TW (1) TWI282403B (de)
WO (1) WO2003058154A1 (de)
ZA (1) ZA200405412B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006106257A1 (fr) * 2005-04-04 2006-10-12 Davey Bickford Initiateur electropyrotechnique de technologie plastique modulable

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1290893C (zh) * 2002-05-03 2006-12-20 詹森药业有限公司 聚合物微乳状液
FR2861389B1 (fr) * 2003-10-22 2006-03-10 Davey Bickford Composition pyrotechnique faiblement sensible a l'electricite statique et aux ultrasons.
FR2885684B1 (fr) * 2005-05-10 2012-04-27 Davey Bickford Initiateur electrique a structure plastique et fonctionnement rapide et generateur de gaz comportant un tel initiateur
DE102005058721A1 (de) * 2005-12-08 2007-06-14 Trw Airbag Systems Gmbh Pyrotechnische Aktuatoreinheit sowie Gassackmodul mit einer solchen Akruatoreinheit
CA2741091C (en) * 2008-10-24 2017-01-17 Battelle Memorial Institute Electronic detonator system
DE102012010608A1 (de) * 2012-05-16 2013-11-21 Trw Airbag Systems Gmbh Anzünder und Verfahren zur Herstellung eines Anzünders für einen Gasgenerator
DE102018218001B4 (de) * 2018-10-22 2021-09-30 Schott Ag Verfahren zur Herstellung eines Anschlussstiftes für Durchführungen, sowie Anschlussstift
RU2723364C1 (ru) * 2019-10-31 2020-06-10 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом) Способ изготовления электродетонатора

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423261A (en) * 1992-12-01 1995-06-13 Giat Industries Pyrotechnic trigger
US5648634A (en) * 1993-10-20 1997-07-15 Quantic Industries, Inc. Electrical initiator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235915A (en) * 1992-05-26 1993-08-17 Stevens Robert D Shotgun slug tracer round and improved shotgun slug
US5711531A (en) * 1993-10-20 1998-01-27 Quantic Industries, Inc. Electrical initiator seal
US5479861A (en) * 1994-01-03 1996-01-02 Kinchin; Anthony E. Projectile with sabot
US5932832A (en) * 1996-04-15 1999-08-03 Autoliv Asp, Inc. High pressure resistant initiator with integral metal oxide varistor for electro-static discharge protection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423261A (en) * 1992-12-01 1995-06-13 Giat Industries Pyrotechnic trigger
US5648634A (en) * 1993-10-20 1997-07-15 Quantic Industries, Inc. Electrical initiator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006106257A1 (fr) * 2005-04-04 2006-10-12 Davey Bickford Initiateur electropyrotechnique de technologie plastique modulable

Also Published As

Publication number Publication date
CZ2004794A3 (cs) 2005-03-16
MXPA04006624A (es) 2005-03-31
KR100916824B1 (ko) 2009-09-14
PL203293B1 (pl) 2009-09-30
TWI282403B (en) 2007-06-11
TW200305708A (en) 2003-11-01
US20050081731A1 (en) 2005-04-21
HUP0500019A2 (hu) 2005-06-28
ES2261605T3 (es) 2006-11-16
CN1615425A (zh) 2005-05-11
AU2003214308A1 (en) 2003-07-24
JP4295115B2 (ja) 2009-07-15
CA2472652A1 (fr) 2003-07-17
US7293504B2 (en) 2007-11-13
ZA200405412B (en) 2005-10-11
CN100365374C (zh) 2008-01-30
WO2003058154A1 (fr) 2003-07-17
ATE326679T1 (de) 2006-06-15
DE60211462T2 (de) 2007-04-26
JP2005514578A (ja) 2005-05-19
CZ304930B6 (cs) 2015-01-28
EP1327850B1 (de) 2006-05-17
DE60211462D1 (de) 2006-06-22
KR20040101203A (ko) 2004-12-02
PL371132A1 (en) 2005-06-13

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