EP1253397A2 - Méthode pour la fabrication d'un allumeur pyrotechnique - Google Patents

Méthode pour la fabrication d'un allumeur pyrotechnique Download PDF

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Publication number
EP1253397A2
EP1253397A2 EP02008165A EP02008165A EP1253397A2 EP 1253397 A2 EP1253397 A2 EP 1253397A2 EP 02008165 A EP02008165 A EP 02008165A EP 02008165 A EP02008165 A EP 02008165A EP 1253397 A2 EP1253397 A2 EP 1253397A2
Authority
EP
European Patent Office
Prior art keywords
set sleeve
open end
sleeve
igniter
edge
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.)
Withdrawn
Application number
EP02008165A
Other languages
German (de)
English (en)
Other versions
EP1253397A3 (fr
Inventor
Horst Dr. Laucht
Ernst Enzmann
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
TRW Airbag Systems GmbH
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 TRW Airbag Systems GmbH filed Critical TRW Airbag Systems GmbH
Publication of EP1253397A2 publication Critical patent/EP1253397A2/fr
Publication of EP1253397A3 publication Critical patent/EP1253397A3/fr
Withdrawn legal-status Critical Current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
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
    • F42B33/02—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges
    • F42B33/025—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges by compacting
    • 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 invention relates to a method for producing an igniter for a gas generator, the igniter contains a set sleeve, and one Set sleeve for a lighter.
  • a sleeve is placed in the lighter body used, which is long enough to a pyrotechnic primer in to be able to absorb the unpressed state or as a suspension in liquid.
  • the volume of the priming charge decreases, so that the edge of the sleeve protrudes axially relative to the primer.
  • the Covered the sleeve to close the sleeve Thus remains in Lighter a cavity that is not filled by the igniter. This Cavity increases the length of the lighter, which is particularly important the constant demand for reducing the size of gas generators is disadvantageous.
  • the object of the invention is a lighter with a small size to provide.
  • the proposed method for producing a lighter for this a gas generator provides that the lighter has a set sleeve with a contains open end, whereby in one step a pyrotechnic primer is inserted over the open end into the set sleeve that an edge of Set sleeve at the open end axially protrudes from the igniter that in a further step the projecting part of the edge is shortened axially, and the open end is closed.
  • the primer can therefore be conventional be introduced in bulk or as a suspension, the large axial Length of the set sleeve is necessary to first the total amount of Ignition rate, which is required for the lighter.
  • the edge of the set sleeve After Reducing the volume of the primer is the edge of the set sleeve axially in front of the primer. Because the protruding part of the edge now is no longer needed, this edge is shortened axially to the cavity that is not filled in by the primer. Then the open End of the sentence sleeve closed by conventional methods. The overall length the igniter can be shortened significantly with this procedure, one Length reduction of about 2 mm can be achieved.
  • the sentence sleeve consists of two parts, one of the parts being a removable ring with the rim, and the ring being removed after inserting the primer.
  • the Ring is preferably attached to the second part of the set sleeve.
  • the Have a weakening zone running along their circumference, and the axial shortening of the protruding part of the edge of the set sleeve takes place in that the projecting edge is cut off, broken off or is torn down. Even with this approach, there are no violent ones Shocks and vibrations that change the consistency of the primer could. Other methods of shortening the margin are also natural conceivable.
  • the primer charge is preferred before the set sleeve is shortened axially compressed to keep the volume of the primer as low as possible and to obtain an ignitable density: an axial shortening of the Achieve a maximum reduction in the size of the lighter.
  • Figures 1a and 1b illustrate the implementation of a first Method according to the invention for producing an igniter. That in Figure 1a shown intermediate product of a lighter 10 in addition to the known Components such as electrical lines 12 or contact pins, the one Ignition pulse can be transmitted to the igniter 10, a set sleeve 14, in the Inside a pyrotechnic igniter 16 is introduced.
  • the ignition charge 16 is via the open end 18 of the set sleeve 14 in the Lighter filled, the set sleeve 14 initially completely up to the edge 20th can be filled. Then the primer 16 is compressed, either by compression or by the solvent of a suspension is evaporated. After this step, the one shown in FIG. 1a is obtained State in which the edge 20 compared to the primer, more specifically protrudes from its end face 22.
  • the set sleeve 14 is shortened axially.
  • the set sleeve 14 is designed in two parts, one Part of the set sleeve 14 as an attached, laterally by a projection 23 fixed ring 24 is executed.
  • the axial length of the ring 24 is chosen so that they the distance of the end face 22 of the igniter 16 from the edge 20 in essentially corresponds.
  • the ring is now 24 removed from the set sleeve 14 so that the set sleeve 14 is axially shortened becomes.
  • the lighter 10 is provided with a cap 26 which open end 18 of the sleeve 14 completes.
  • the closure of the open end 18 can of course also be done in another known way.
  • the igniter is still cast in a known manner in a base 28 or be encapsulated.
  • FIGS. 2a and 2b clarifies, the components used essentially with the already Figures 1a and 1b match known.
  • Lighter 10 becomes a one-piece in the manufacture of lighter 10 '
  • Set sleeve 14 ' used.
  • the set sleeve 14 ' has a circumferential Attenuation zone 30, which forms a predetermined breaking point.
  • the Set sleeve 14 After filling and compressing the primer 16, the Set sleeve 14 severed, broken off or at the weakening zone 30 tore off. Removing the protruding edge 20 results in an axial Shortening the set sleeve 14 '.
  • the weakening zone 30 is preferably at the level the end face 22 of the ignition charge 16 in order to shorten the maximum axial length To achieve set sleeve 14 '.
  • the after shortening the set sleeve 14 ' emerging new edge 32 of the open end 18 preferably closes with the End face 22 of the ignition charge 16.
  • the igniter 10 ' is then completed as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
EP02008165A 2001-04-23 2002-04-15 Méthode pour la fabrication d'un allumeur pyrotechnique Withdrawn EP1253397A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10119769 2001-04-23
DE10119769A DE10119769C1 (de) 2001-04-23 2001-04-23 Verfahren zur Herstellung eines Anzünders

Publications (2)

Publication Number Publication Date
EP1253397A2 true EP1253397A2 (fr) 2002-10-30
EP1253397A3 EP1253397A3 (fr) 2003-01-02

Family

ID=7682347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02008165A Withdrawn EP1253397A3 (fr) 2001-04-23 2002-04-15 Méthode pour la fabrication d'un allumeur pyrotechnique

Country Status (3)

Country Link
US (1) US6761118B2 (fr)
EP (1) EP1253397A3 (fr)
DE (1) DE10119769C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6243404B2 (ja) * 2013-03-29 2017-12-06 日本化薬株式会社 ガス発生器
WO2018119999A1 (fr) * 2016-12-30 2018-07-05 Hamlin Electronics (Suzhou) Co. Ltd Allumeur pour détonateur électronique
JP7257190B2 (ja) * 2019-03-06 2023-04-13 株式会社ダイセル 点火器組立体、保持部の成形方法、及びガス発生器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US712826A (en) * 1902-06-09 1902-11-04 Winchester Repeating Arms Co Combined percussion and electric primer.
DE685077C (de) * 1938-04-23 1939-12-11 Dynamit Act Ges Vormals Alfred Sprengkapsel fuer Zeitzuendung
BE536503A (fr) * 1954-04-13
US4735145A (en) * 1987-03-02 1988-04-05 The United States Of America As Represented By The United States Department Of Energy High temperature detonator
US4779532A (en) * 1987-10-23 1988-10-25 The United States Of America As Represented By The Secretary Of The Army Integrated filtered and shielded ignition assembly
US4858529A (en) * 1988-07-01 1989-08-22 The United States Of America As Represented By The Department Of Energy Spark-safe low-voltage detonator
DE3920402A1 (de) * 1989-06-22 1991-01-03 Dynamit Nobel Ag Verfahren zum abdecken eines rohres mit einer folie und danach hergestellte elektrische zuendelemente
US5593181A (en) * 1996-03-15 1997-01-14 Morton International, Inc. Generant wafer core ignition system for passenger side airbag inflator
ES2170199T3 (es) * 1996-12-13 2002-08-01 Ruag Munition Retardo pirotecnico, procedimiento para su fabricacion asi como su uso.
DE19841228A1 (de) * 1998-09-09 2000-03-23 Siemens Ag Anzünder und Verfahren zum Herstellen eines Anzünders
DE19914241A1 (de) * 1999-03-29 2000-10-05 Nico Pyrotechnik Zündeinrichtung für eine Insassenschutzvorrichtung eines Kraftfahrzeuges

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
US6761118B2 (en) 2004-07-13
EP1253397A3 (fr) 2003-01-02
DE10119769C1 (de) 2002-10-17
US20020152919A1 (en) 2002-10-24

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