EP0895646A1 - Element coupe-circuit pyrotechnique pour circuits - Google Patents

Element coupe-circuit pyrotechnique pour circuits

Info

Publication number
EP0895646A1
EP0895646A1 EP97922911A EP97922911A EP0895646A1 EP 0895646 A1 EP0895646 A1 EP 0895646A1 EP 97922911 A EP97922911 A EP 97922911A EP 97922911 A EP97922911 A EP 97922911A EP 0895646 A1 EP0895646 A1 EP 0895646A1
Authority
EP
European Patent Office
Prior art keywords
separating
current conductor
pyrotechnic
current
element according
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
EP97922911A
Other languages
German (de)
English (en)
Other versions
EP0895646B1 (fr
Inventor
Heinz Kern
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.)
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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 Dynamit Nobel AG, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of EP0895646A1 publication Critical patent/EP0895646A1/fr
Application granted granted Critical
Publication of EP0895646B1 publication Critical patent/EP0895646B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/006—Opening by severing a conductor

Definitions

  • the invention relates to a pyrotechnic fuse element for circuits, as known from DE 42 11 079 AI and DE 44 22 177 AI.
  • the pyrotechnic fuse elements known from the prior art according to DE 42 11 079 AI and DE 44 22 177 AI each have a current conductor which can be cut by means of a separating device in the event of overcurrents.
  • the conductor is severed by means of a separating or cutting element which acts on a separating section of the conductor.
  • the separating device can be operated pyrotechnically by igniting a pyrotechnic charge, the combustion gases released thereby moving the separating device together with the separating or cutting element towards and through the separating section of the current conductor.
  • a current conductor can be cut through with the known pyrotechnic fuse elements. With a multi-pole shutdown Several pyrotechnic security elements are required, which is complex.
  • the invention has for its object to provide a pyrotechnic fuse element with which several conductors can be cut in a simple manner and at low manufacturing costs.
  • the invention proposes a pyrotechnic fuse element for circuits, which is provided with a plurality of current conductors, each of which has a separating section in which the relevant current conductor can be cut, and a pyrotechnically operable separating device with a carrier part, which carries a plurality of separating elements for severing the separating sections of the current conductors and can be moved towards the current conductors as a result of the ignition of a pyrotechnic charge, a separating element being assigned to each current conductor.
  • the pyrotechnic fuse element has a plurality of current conductors, each of which is provided with a separating section, on which a separating element, which may be a cutting element, for example, acts. All separating elements are arranged on a common carrier part which, due to the ignition of the pyrotechnic charge, can be moved towards the current conductors in order to drive the separating elements through the separating sections of the current conductors.
  • the invention creates the possibility of several electrical current conductors through the action of a single pyrotechnic charge.
  • a corresponding structural design of the pyrotechnic fuse element and in particular through a corresponding design of the separating device or the separating elements of the separating device, it is also possible to cut the current conductors at the same time or at different times.
  • the simultaneous cutting of all current conductors is achieved in that the distance between the separating sections from the respectively assigned separating elements is the same. If the current conductors are to be severed at different times, this is expediently achieved in that the distances between the current conductors or the separating sections of the current conductors are different in size from the respectively assigned separating elements.
  • the separating elements of the separating device are designed as a one-piece separating tool.
  • a one-piece cutting tool for example, an angled or stepped front edge with current conductor separating sections arranged at the same height can be used to ensure a temporally staggered cutting of the current conductors.
  • the current conductors are formed in one piece in the area of their separating sections and have a cross-sectional area that is smaller than in the area outside their separating sections.
  • the reduction in cross-section in the region of the separating sections is expediently to be chosen such that there are no significant voltage drops.
  • the cross-sectional reduction has an advantageous effect on the separating forces to be applied, which are reduced in comparison to the case in which the current conductors have to be separated over their entire cross-sectional area.
  • a comparative comparison can thus also be made for severing several current conductors, as provided in the pyrotechnic fuse element according to the invention. wise small-sized pyrotechnic charge can be used.
  • the separating elements or the entire separating device are made of an electrically insulating material.
  • the separating device and in particular its separating elements are made of plastic.
  • the separating sections of the current conductors are designed as recesses made in their outer surfaces, in particular in the form of grooves. These depressions are expediently arranged in the side sections of the outer surfaces of the current conductors facing the separating elements. In this way, the mutually opposite flanks of the depressions serve as guides for the separating elements respectively assigned to the separating sections as they move towards the separating sections and through the current conductors.
  • the separating elements in their starting positions, from which they can be moved toward and through the current conductors as a result of the ignition of the pyrotechnic charge in order to cut through them are already immersed to different degrees in the depressions.
  • cross sectional area is each
  • each current conductor in the separating section is most preferably 5% to 15% and in particular 10% of the cross-sectional area of the current conductor outside the separating section.
  • Each conductor is made in one piece, which avoids electrical contact zones, which can change with regard to their contact resistance due to temperature, manufacturing tolerances, moisture or corrosion.
  • the manufacturing costs are significantly reduced compared to the known pyrotechnic security elements.
  • the moving mass can be reduced, which enables lower material thicknesses and the use of inexpensive plastic materials.
  • the size of the pyrotechnic fuse element is relatively small.
  • the pyrotechnic security element has only a few individual parts.
  • the pyrotechnic charge need only be designed to be low.
  • FIG. 1 to 3 perspective representations or a sectional representation of a first exemplary embodiment of a pyrotechnic securing element with two current conductors and a one-piece separating tool for the temporally offset cutting of the two current conductors in the starting position and in the severing position,
  • Fig. 4 to 6 are perspective representations or a sectional representation of a second exemplary embodiment of a pyrotechnic fuse element with three current conductors and a three-part separating tool for separating the current conductors at different times in the initial state and in the severed state and
  • FIGS. 7 to 10 to illustrate the structural design of the current conductors used in the pyrotechnic fuse elements according to the above two exemplary embodiments with a cross-sectional reduction in the separating section.
  • the pyrotechnic securing element 10 according to the first exemplary embodiment has a housing 12, which is only partially indicated by dashed lines in the figures and is made of, in particular, non-conductive material, in which a cavity 14 is formed.
  • Two electrical conductors 16 extend through the cavity 14.
  • the (separating) sections 17 of the two current conductors 16 extending through the cavity 14 run essentially parallel to one another.
  • a separating device 18 made of plastic is displaceably arranged in the cavity 14 and has a carrier part 20 with a one-part separating tool 22 which projects from it.
  • the separating tool 22 is arranged on the side of the carrier part 20 facing the current conductors 16 and serves to sever both current conductors 16.
  • In the housing 12 there is also a pyro-technical charge 24 with an electrical ignition element (not shown) and feed lines 26 .
  • the current conductors 16 lie on the boundary wall 28 of the cavity 14 opposite the carrier part 20 and the separating tool 22, a receiving space 30 extending beneath them in the housing 12, into which the separating tool 22 is immersed after the current conductors 16 have been severed (see FIG the situation according to FIG. 2).
  • each current conductor 16 is assigned a part 32 of the separating tool 22 (this part is referred to above as a separating element).
  • the separating tool 22 has an inclined front edge 34, which ensures that when the current conductors 16 are arranged at the same height, the one (referred to FIG. 3 the left one) is cut rather than the other one (based on Fig. 3 the right one).
  • FIGS. 4 to 6 A second exemplary embodiment of a pyrotechnic security element 10 is described below with reference to FIGS. 4 to 6 described.
  • the individual parts of the securing element 10 ' which comprise the parts of the securing element 10 according to FIGS. 1 to 3 correspond to the same reference numerals, but used simply deleted.
  • the difference between the pyrotechnic securing element 10 'and the securing element 10 according to FIGS. 1 to 3 consists on the one hand in that three current conductors 16 'can be separated at different times with the securing element 10', and on the other hand in that the separating tool 22 'is constructed in three parts, that is to say has three separating elements 32' which are integrally connected to the carrier part 20 '.
  • the three current conductors 16 ' are arranged symmetrically offset in the housing 12' by 120 ° from each other.
  • the sections 17 'of the current conductors 16' extend in each case rotated by 120 ° to one another.
  • the distances between the front edges 34 'of the separating elements 32' are spaced differently apart from the separating sections 17 'of the current conductors 16' arranged at a common height.
  • FIGS. 7 to 10 pyrotechnic Fuse element 50 explained.
  • FIGS. 7 to 10 a pyrotechnic element with only one current conductor is shown.
  • the figures 7 and 8 are longitudinal sections through the pyrotechnic fuse element 50 in its initial state with the current conductor not yet severed, while the FIGS. 9 and 10 show longitudinal sections of the pyrotechnic fuse element 50 when the charge is ignited, that is to say when the conductor is severed.
  • the securing element 50 has a housing 52 made of, in particular, electrically non-conductive material, in which a cavity 54 is formed.
  • the electrical current conductor 56 extends through the cavity 54 and is led out of the housing 52 on both sides.
  • the circuit to be protected can be connected to the led out ends of the current conductor 56.
  • a pyrotechnically operated separating device 58 which has a plastic piston 60.
  • the plastic piston 60 carries on its end facing the current conductor 56 a separating element 62 in the form of a plastic sword, which is preferably connected in one piece to the plastic piston 60.
  • On the end face of the plastic piston 60 facing away from the separating element 62 there is a pyrotechnic charge 64 in the housing 52 with an ignition element (not shown) which can be ignited electrically via electrical supply lines 66.
  • the separating element 62 is inserted with its front end into a recess 68 of the current conductor 56 immersed.
  • This recess 68 which in the case of the exemplary embodiment is a groove which is rectangular in cross section and extends over the entire width of the current conductor 56, represents the separating section 70 (in FIGS. 1 to 6 with 17 or 17 ') of the current conductor 56, in the area of which the current conductor 56 can be severed by means of the separating device 58.
  • the depression 68 is introduced into the part 72 of the outer surface of the current conductor 56 facing the separating device 58.
  • the separating element 62 is advanced through the separating section 70 of the current conductor 56 when the securing element 50 is triggered, into the receiving space 74.
  • this receiving space 74 also serves to receive that part 76 of the current conductor 56, within its separating section 70, which is separated by the separating element 62. To a certain extent, the separating element 62 thus stamps the part 76 out of the separating section 70 of the current conductor 56.
  • the pyrotechnic fuse element 50 has been explained above using an example in which the current conductor 56 has a separating section 70 of reduced cross section.
  • the current conductor 56 could also have several, e.g. be provided with two separating sections, the separating element 62 then separating the middle part of the current conductor 56 between the two separating sections.

Landscapes

  • Fuses (AREA)

Abstract

L'invention concerne un élément coupe-circuit pyrotechnique pour circuits, comportant plusieurs conducteurs (16), dont chacun présente une section de séparation (17) dans laquelle le conducteur (16) concerné peut être séparé. Cet élément coupe-circuit pyrotechnique présente en outre un dispositif de séparation (18) actionnable de manière pyrotechnique, muni d'une partie support (20) portant plusieurs éléments de séparation (32) servant à séparer les sections de séparation (17) des conducteurs (16). Suite à la mise à feu d'une charge pyrotechnique (24), la partie support (20) peut être déplacée sur les conducteurs (16), un élément de séparation (32) étant associé à chaque conducteur (16).
EP97922911A 1996-04-27 1997-04-25 Element coupe-circuit pyrotechnique pour circuits Expired - Lifetime EP0895646B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19616994A DE19616994A1 (de) 1996-04-27 1996-04-27 Pyrotechnisches Sicherungselement für Stromkreise
DE19616994 1996-04-27
PCT/EP1997/002129 WO1997041583A1 (fr) 1996-04-27 1997-04-25 Element coupe-circuit pyrotechnique pour circuits

Publications (2)

Publication Number Publication Date
EP0895646A1 true EP0895646A1 (fr) 1999-02-10
EP0895646B1 EP0895646B1 (fr) 1999-12-01

Family

ID=7792707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97922911A Expired - Lifetime EP0895646B1 (fr) 1996-04-27 1997-04-25 Element coupe-circuit pyrotechnique pour circuits

Country Status (3)

Country Link
EP (1) EP0895646B1 (fr)
DE (2) DE19616994A1 (fr)
WO (1) WO1997041583A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4033510A4 (fr) * 2020-12-11 2022-08-03 Xi' An Sinofuse Electric Co., Ltd. Fusible d'excitation multi-fracture combiné à une rupture et à une fusion mécaniques

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9901932D0 (sv) * 1999-05-26 1999-05-26 Cassiopeja Ab Anordning för att skydda ett fordon mot brand
DE502004005631D1 (de) * 2003-02-04 2008-01-17 Delphi Tech Inc Pyromechanisches Trennelement
DE10337958A1 (de) * 2003-02-04 2004-08-12 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Pyromechanisches Trennelement
DE102004010071A1 (de) * 2003-03-12 2004-09-23 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Gehäuse und Stromleiterschiene für eine Batterieabschaltung
DE102004011863A1 (de) * 2003-04-03 2004-10-14 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Gehäuse mit Stromleiterschiene für ein Trennsystem
EP1464544B1 (fr) 2003-04-03 2010-09-15 Delphi Technologies, Inc. Boîtier avec une barre conductrice pour un dispositif de sectionnement
EP1492139B1 (fr) * 2003-06-26 2016-01-06 Autoliv Development AB Ciseau pour element de séparation pyromecanique
DE102004016884A1 (de) * 2003-06-26 2005-01-13 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Meißel für ein pyromechanisches Trennelement
EP2187417A1 (fr) * 2008-11-14 2010-05-19 Delphi Technologies, Inc. Disjoncteur pyromécanique
EP2704117A2 (fr) 2012-08-28 2014-03-05 Erich Matouschek Dispositif de déclenchement d'alarme et de sécurité contre l'effraction
DE102013009544A1 (de) 2013-06-04 2014-12-04 Erich Matouschek Alarmauslösende Einbruchsicherung
DE102012221664B4 (de) * 2012-09-25 2022-04-21 Te Connectivity Germany Gmbh Kurzschlussabschalter
FR3017240B1 (fr) * 2014-02-04 2016-01-29 Ncs Pyrotechnie Et Tech Sas Coupe-circuit pyrotechnique
DE102014106532B4 (de) 2014-05-09 2017-06-22 Erich Matouschek Vorrichtung zur Alarmauslösung und Einbruchsicherung
DE102014222230A1 (de) * 2014-10-30 2016-05-04 Leoni Bordnetz-Systeme Gmbh Pyrotechnischer Schutzschalter
FR3071658B1 (fr) * 2017-09-26 2019-10-18 Arianegroup Sas Dispositif pyrotechnique destine a ouvrir un premier circuit electrique et a fermer un deuxieme circuit electrique
FR3071659B1 (fr) * 2017-09-26 2019-10-11 Arianegroup Sas Dispositif de coupure pyrotechnique
FR3071657B1 (fr) * 2017-09-26 2020-11-13 Arianegroup Sas Dispositif de coupure pyrotechnique
EP3863036B1 (fr) * 2018-10-01 2024-05-01 Panasonic Intellectual Property Management Co., Ltd. Appareil de coupure de circuit et système de coupure de circuit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793501A (en) * 1972-12-04 1974-02-19 Ici America Inc Explosive switch
US4224487A (en) * 1978-02-23 1980-09-23 Simonsen Bent P Fast acting explosive circuit interrupter
US4417519A (en) * 1981-06-04 1983-11-29 Mcdonnell Douglas Corporation Explosive switch
JP2542704B2 (ja) * 1989-09-29 1996-10-09 工業技術院長 高速大電流スイッチ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9741583A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4033510A4 (fr) * 2020-12-11 2022-08-03 Xi' An Sinofuse Electric Co., Ltd. Fusible d'excitation multi-fracture combiné à une rupture et à une fusion mécaniques
US11784021B2 (en) 2020-12-11 2023-10-10 Xi' An Sinofuse Electric Co., Ltd. Mechanical breaking and fusing combined multi-fracture excitation fuse

Also Published As

Publication number Publication date
DE19616994A1 (de) 1997-10-30
WO1997041583A1 (fr) 1997-11-06
EP0895646B1 (fr) 1999-12-01
DE59700801D1 (de) 2000-01-05

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