EP1327850B1 - Initiateur électropyrotechnique et procédé d'assemblage - Google Patents

Initiateur électropyrotechnique et procédé d'assemblage Download PDF

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Publication number
EP1327850B1
EP1327850B1 EP02290061A EP02290061A EP1327850B1 EP 1327850 B1 EP1327850 B1 EP 1327850B1 EP 02290061 A EP02290061 A EP 02290061A EP 02290061 A EP02290061 A EP 02290061A EP 1327850 B1 EP1327850 B1 EP 1327850B1
Authority
EP
European Patent Office
Prior art keywords
sub
assembly
initiator according
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.)
Expired - Lifetime
Application number
EP02290061A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1327850A1 (fr
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 AT02290061T priority Critical patent/ATE326679T1/de
Application filed by Davey Bickford SAS filed Critical Davey Bickford SAS
Priority to ES02290061T priority patent/ES2261605T3/es
Priority to DE60211462T priority patent/DE60211462T2/de
Priority to EP02290061A priority patent/EP1327850B1/fr
Priority to AU2003214308A priority patent/AU2003214308A1/en
Priority to MXPA04006624A priority patent/MXPA04006624A/es
Priority to CZ2004-794A priority patent/CZ304930B6/cs
Priority to JP2003558418A priority patent/JP4295115B2/ja
Priority to CA002472652A priority patent/CA2472652A1/fr
Priority to TW092100506A priority patent/TWI282403B/zh
Priority to CNB038021331A priority patent/CN100365374C/zh
Priority to PL371132A priority patent/PL203293B1/pl
Priority to US10/501,237 priority patent/US7293504B2/en
Priority to PCT/FR2003/000080 priority patent/WO2003058154A1/fr
Priority to HU0500019A priority patent/HUP0500019A2/hu
Priority to KR1020047010757A priority patent/KR100916824B1/ko
Publication of EP1327850A1 publication Critical patent/EP1327850A1/fr
Priority to ZA200405412A priority patent/ZA200405412B/en
Application granted granted Critical
Publication of EP1327850B1 publication Critical patent/EP1327850B1/fr
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 electropyrotechnic initiator and a method of assembling an electropyrotechnic initiator.
  • the first uses "glass-to-metal crossing" type bases and the second to "plastic" base or type initiators.
  • Initiators belonging to the first category are often regarded as synonymous with assurance of hermeticity and infallible protection of pyrotechnic compositions and / or explosives against the effects of extreme environments (humidity among others).
  • glass-metal type crossings are sensitive to the mechanical and thermal stresses that can be applied to them during the various stages of their assembly process or during the assembly steps (crimping, welding, etc.). ) of said initiators to a device for civil pyrotechnic applications (for example, pretensioners, air bags for automobile safety), military or space.
  • the initiators on plastic traverse suffer for their part from a hermeticity problem related to the plastic material (for example, moisture-sensitive polyamide) retained for their realization or at their internal joints (by clipping, gluing ..) unsealed .
  • a hermeticity problem related to the plastic material for example, moisture-sensitive polyamide
  • US Pat. No. 5,423,261 (Bernardy Jean-Claude et al.) Of June 13, 1995
  • US Pat. No. 5,648,634 (Avery Marks Lucas et al.) Of July 15, 1997, relate to an electropyrotechnic initiator formed of two subwoofers. plastic assemblies and ultrasonically welded to form a hermetic assembly.
  • the object of the present invention is to provide an electropyrotechnic initiator of the plastic type, simple in design and in its operating mode, compact and economical having excellent hermetic qualities.
  • the electropyrotechnic initiator comprises a housing.
  • This housing comprises a first 2 and second 3 subassemblies.
  • the first subassembly 2 comprises a wall 4 of plastic secured to 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 method.
  • the load 6 comprises at least one composition.
  • the container 2 receives a first composition 7 called secondary composition and a second composition 8 called primary composition.
  • Each of the compositions of the pyrotechnic charge 6 is mass-loaded and is precompressed.
  • the precompression is carried out with a pressure lower than 120 bars for the primary composition 8 and with a pressure greater than 150 bars for the secondary composition 7.
  • the final compression force is ensured during the hermetic assembly of the first sub-composition. set 2 with a second subassembly 3 comprising the electrical part of the initiator, said subassembly 3 also being called a base.
  • the assembly is performed by ultrasonic welding ensuring extreme tightness.
  • the height difference between the outermost layer 9 of the pyrotechnic charge 6 after precompressing the compositions and the face 15 of the container 2 is advantageously called the vacuum height.
  • the first 7 and second 8 compositions are free from heavy metals in an effort to respect the environment. Said compositions are also resistant to heating 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 natures and particle size is therefore ensured by the variation of the height of said container 2.
  • the small diameter inside the first subassembly 2 advantageously avoids having to resort to 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 offers plus increased security without risk to the reliability of pyrotechnic operation to the extent that the thickness of the loaded 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 electric 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 island of elevation 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 1 is between 0.2 and 0.8 mm.
  • the second subassembly 3 is overmolded on pins 11, 12.
  • the term "pin” is used to supply current to the initiator.
  • the pins 11, 12 comprise electrodes.
  • the electrodes are striated. These grooves 18 not only ensure 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 wires.
  • 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. 4 shows an ultrasonic weld joint 16 which does not include a shear joint but a semi-shear joint.
  • the present pyrotechnic initiator can advantageously be used for the production of apparatus for civil, military and space pyrotechnic applications.
  • the initiator is polyketone, it may advantageously be placed in contact with or placed near vapors or liquids of chemicals.

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)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Push-Button Switches (AREA)
EP02290061A 2002-01-10 2002-01-10 Initiateur électropyrotechnique et procédé d'assemblage Expired - Lifetime EP1327850B1 (fr)

Priority Applications (17)

Application Number Priority Date Filing Date Title
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 (fr) 2002-01-10 2002-01-10 Initiateur électropyrotechnique et procédé d'assemblage
AT02290061T ATE326679T1 (de) 2002-01-10 2002-01-10 Pyrotechnischer elektrischer anzünder und montageverfahren
MXPA04006624A MXPA04006624A (es) 2002-01-10 2003-01-10 Iniciador electropirotecnico.
CZ2004-794A CZ304930B6 (cs) 2002-01-10 2003-01-10 Elektrický pyrotechnický iniciátor
JP2003558418A JP4295115B2 (ja) 2002-01-10 2003-01-10 電気式ロケット点火装置
CA002472652A CA2472652A1 (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
CNB038021331A CN100365374C (zh) 2002-01-10 2003-01-10 电烟火起爆器
PL371132A PL203293B1 (pl) 2002-01-10 2003-01-10 Zapalnik elektro-pirotechniczny i sposób montażu zapalnika elektro-pirotechnicznego
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.
HU0500019A HUP0500019A2 (hu) 2002-01-10 2003-01-10 Villamos pirotechnikai iniciáló gyutacs, valamint eljárás annak összeszerelésére
KR1020047010757A KR100916824B1 (ko) 2002-01-10 2003-01-10 전자불꽃 기폭제
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 (fr) 2002-01-10 2002-01-10 Initiateur électropyrotechnique et procédé d'assemblage

Publications (2)

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

Family

ID=8185696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290061A Expired - Lifetime EP1327850B1 (fr) 2002-01-10 2002-01-10 Initiateur électropyrotechnique et procédé d'assemblage

Country Status (17)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060034797A1 (en) * 2002-05-03 2006-02-16 Arien Albertina M E Polymeric micromulsions
FR2861389B1 (fr) * 2003-10-22 2006-03-10 Davey Bickford Composition pyrotechnique faiblement sensible a l'electricite statique et aux ultrasons.
EP1710532B1 (fr) * 2005-04-04 2009-12-30 TRW Airbag Systems GmbH Initiateur électropyrotechnique de technologie plastique modulable
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
NZ592333A (en) * 2008-10-24 2014-10-31 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

Family Cites Families (6)

* 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
FR2698687B1 (fr) * 1992-12-01 1995-02-03 Giat Ind Sa Initiateur pyrotechnique.
US5711531A (en) * 1993-10-20 1998-01-27 Quantic Industries, Inc. Electrical initiator seal
US5648634A (en) * 1993-10-20 1997-07-15 Quantic Industries, Inc. Electrical initiator
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

Also Published As

Publication number Publication date
CN100365374C (zh) 2008-01-30
WO2003058154A1 (fr) 2003-07-17
KR20040101203A (ko) 2004-12-02
CA2472652A1 (fr) 2003-07-17
TW200305708A (en) 2003-11-01
ES2261605T3 (es) 2006-11-16
DE60211462D1 (de) 2006-06-22
DE60211462T2 (de) 2007-04-26
JP4295115B2 (ja) 2009-07-15
TWI282403B (en) 2007-06-11
ATE326679T1 (de) 2006-06-15
US7293504B2 (en) 2007-11-13
US20050081731A1 (en) 2005-04-21
HUP0500019A2 (hu) 2005-06-28
CZ2004794A3 (cs) 2005-03-16
MXPA04006624A (es) 2005-03-31
EP1327850A1 (fr) 2003-07-16
ZA200405412B (en) 2005-10-11
CN1615425A (zh) 2005-05-11
JP2005514578A (ja) 2005-05-19
KR100916824B1 (ko) 2009-09-14
AU2003214308A1 (en) 2003-07-24
PL371132A1 (en) 2005-06-13
PL203293B1 (pl) 2009-09-30
CZ304930B6 (cs) 2015-01-28

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