EP2065672A2 - Elément de force miniaturisé - Google Patents

Elément de force miniaturisé Download PDF

Info

Publication number
EP2065672A2
EP2065672A2 EP08020046A EP08020046A EP2065672A2 EP 2065672 A2 EP2065672 A2 EP 2065672A2 EP 08020046 A EP08020046 A EP 08020046A EP 08020046 A EP08020046 A EP 08020046A EP 2065672 A2 EP2065672 A2 EP 2065672A2
Authority
EP
European Patent Office
Prior art keywords
working
miniaturized
cap
side wall
working element
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
EP08020046A
Other languages
German (de)
English (en)
Other versions
EP2065672A3 (fr
EP2065672B1 (fr
Inventor
Karl Rudolf
Bernd Dr. Eigenmann
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.)
Diehl Defence GmbH and Co KG
Original Assignee
Diehl BGT Defence GmbH and Co KG
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 Diehl BGT Defence GmbH and Co KG filed Critical Diehl BGT Defence GmbH and Co KG
Publication of EP2065672A2 publication Critical patent/EP2065672A2/fr
Publication of EP2065672A3 publication Critical patent/EP2065672A3/fr
Application granted granted Critical
Publication of EP2065672B1 publication Critical patent/EP2065672B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F42B3/006—Explosive bolts; Explosive actuators
    • 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
    • F42B3/103—Mounting initiator heads in initiators; Sealing-plugs
    • 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

Definitions

  • the invention relates to a force element according to the preamble of claim 1.
  • Known force elements function by means of a pyrotechnic charge which is ignited, burns off, thereby developing gas and other components which expand and effect.
  • the working element is, for example, designed as a piston.
  • the components used for such known force elements are usually complex in nature and usually produced by turning technology.
  • the seal between the guide element and the working element is realized by fits and / or by sealing elements.
  • fits require a corresponding production cost. This affects the manufacturing costs.
  • Force elements sealed by sealing elements or by means of lacquering have the defect that they are not hermetically sealed with regard to possible environmental flows during storage.
  • Another shortcoming of such known power elements is their relatively large volume of construction.
  • the pyrotechnic propellants of known power elements used have relatively large masses and burn to form slags and smoke, whereby adjacent mechanical components can be disturbed.
  • the present invention seeks to provide a force element of the type mentioned, which is simple and inexpensive small volume produced, ie miniaturized, and does not have the above-mentioned deficiencies.
  • the cap-like working element is expediently formed by a sheet-metal part produced by drawing technology.
  • the guide element for the working element is formed by a sheet-metal part produced by drawing.
  • the cap-shaped working element has a thin cylindrical side wall, so that the working element reliably seals against the cylindrical guide element in a simple manner by the thin side wall of the working element is expanded by the pressure generated by the explosive in the charge space and on the inside of the guide element sealing tight and rubbing comes to rest, so that own sealing elements are unnecessary. By the said friction bouncing of the working element is prevented upon reaching the end position in an advantageous manner.
  • the cap-like working element may additionally have another, for example.
  • Rotationally manufactured component such as a piercing needle o. The like. Have.
  • the guide element of the miniaturized force element according to the invention may be formed with a beading edge which determines the end of the working path of the working element, so that no parts are advantageously ejected at the end of the working path.
  • the explosive-containing charge space of the miniaturized force element according to the invention is hermetically sealed in the rest, ie storage condition. This is achieved in that the sleeve of the end element of the miniaturized force element, the thin cylindrical side wall of the working element and the cylinder sleeve of the guide element are sealingly welded together. This can be a laser welding.
  • the pressure generated in the charge space ruptures the predetermined breaking point provided in the thin side wall of the working element, so that the originally fixed working element becomes free and can move in the guide element to the end of its working travel.
  • the charge space may have an additional element to reduce the charge volume.
  • This additional element may, for example, be an inert material.
  • the charging of the charge space does not consist of a pyrotechnic charge but of a primary or secondary explosive, which generates substantially gas and negligible or no metal compounds during its conversion.
  • the explosive is advantageously phlegmatized by additives and processing technology so far that it does not detonate under the given conditions but merely burns off. In this way, a sufficiently shock-wave acceleration of the cap-like working element is achieved in the guide element.
  • the minimization of the charge also advantageously allows an increase in the safety of the force element according to the invention.
  • the figure shows a longitudinal section of an embodiment of the miniaturized force element 10, which has a guide element 12 for a working element 14.
  • the guide element 12 is formed by a sheet-metal part produced by drawing; it is designed as a cylindrical sleeve 16 which is formed at its one end with an outer peripheral flange 18 and at its second end remote therefrom with a flared edge 20 inside.
  • the beading 20 determines the end of the working path of the working element 14th
  • the working element 14 is formed by a sheet-metal part produced by way of drawing, it has an end wall 22 and a cylindrical side wall 24 which is connected in one piece to this material.
  • the cap-like work element 14 is combined with a closure element 26.
  • the terminating element 26 has an insulating body 28, through which two connecting elements 30, which are spaced apart from one another, extend through which are contacted with a firing bridge element 32.
  • the ignition bridge element 32 is attached to the inner end face 34 of the insulating material 28.
  • the insulating body 28 of the closing element 26 is enclosed by a sleeve 36.
  • the sleeve 36, the cylindrical side wall 24 of the cap-like working element 14 and the cylinder sleeve 16 of the guide element 12 are sealingly welded together on the side of the miniaturized force element 10, on which the connection elements 30 protrude. This circumferential weld is designated by the reference numeral 38.
  • a charge space 40 is determined, which is provided for an explosive 42.
  • connection elements 30 If an ignition voltage is applied to the connection elements 30, the ignition bridge element 32 melts, as a result of which the explosive 42 is ignited. The generated gas d. H. Internal pressure causes a circumferential predetermined breaking point 44 in the thin cylindrical side wall 24 of the working element 14 tears open and the working element 14 in the guide member 12 is free.
  • the circumferential predetermined breaking point 44 in the cylindrical side wall 24 of the cap-like working element 14 is formed, for example, as a circumferential notch or groove.
  • the working travel of the working element 14 can be, for example, 3 mm and the longitudinal dimension of the guide element 12 can be 4 mm, for example.
  • the outer diameter of the force element 10 may, for. B. 2.3 mm.
  • the explosive 42 in the cargo space 40 is preferably a phlegmatized explosive having a mass of ⁇ 1 mg.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP20080020046 2007-11-29 2008-11-18 Elément de force miniaturisé Not-in-force EP2065672B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710057551 DE102007057551B4 (de) 2007-11-29 2007-11-29 Miniaturisiertes Kraftelement

Publications (3)

Publication Number Publication Date
EP2065672A2 true EP2065672A2 (fr) 2009-06-03
EP2065672A3 EP2065672A3 (fr) 2013-02-20
EP2065672B1 EP2065672B1 (fr) 2014-06-18

Family

ID=40303756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080020046 Not-in-force EP2065672B1 (fr) 2007-11-29 2008-11-18 Elément de force miniaturisé

Country Status (3)

Country Link
EP (1) EP2065672B1 (fr)
DE (1) DE102007057551B4 (fr)
ZA (1) ZA200810000B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485307A (zh) * 2019-09-11 2019-11-22 李双 一种桥梁施工用防堵漏装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013017383A1 (de) * 2013-10-21 2015-04-23 Trw Airbag Systems Gmbh Anzündeinheit, insbesondere für einen Gasgenerator, Gasgenerator, Gassackmodul, Fahrzeugsicherheitssystem und Verfahren zur Herstellung einer Anzündeinheit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991649A (en) * 1975-06-27 1976-11-16 Networks Electronic Corporation Pyrotechnic wire cutter
DE8306744U1 (de) * 1983-03-09 1983-07-14 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Pyrotechnischer ausloeser
KR920009648A (ko) * 1990-11-28 1992-06-25 모르겐슈테른, 슐쯔 에어 백 가스발생기용 점화유닛
DE19960642B4 (de) * 1999-08-05 2007-08-02 Delphi Technologies, Inc., Troy Pyrotechnische Zündkette
US20060219121A1 (en) * 2000-08-09 2006-10-05 Trw Automotive U.S. Llc Ignition material for an igniter
DE20020103U1 (de) * 2000-11-27 2001-04-05 TRW Airbag Systems GmbH & Co. KG, 84544 Aschau Pyrotechnischer Gasgenerator
CZ20033416A3 (en) * 2001-05-15 2004-04-14 Nippon Kayaku Kabushiki-Kaisha Gas generator
US7063019B2 (en) * 2002-07-11 2006-06-20 Autoliv Asp, Inc. Assemblies including extendable, reactive charge-containing actuator devices
JP4335725B2 (ja) * 2004-03-30 2009-09-30 日本化薬株式会社 ガス発生器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485307A (zh) * 2019-09-11 2019-11-22 李双 一种桥梁施工用防堵漏装置
CN110485307B (zh) * 2019-09-11 2021-08-10 李双 一种桥梁施工用防堵漏装置

Also Published As

Publication number Publication date
ZA200810000B (en) 2009-11-25
EP2065672A3 (fr) 2013-02-20
EP2065672B1 (fr) 2014-06-18
DE102007057551B4 (de) 2011-11-24
DE102007057551A1 (de) 2009-06-04

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