EP2545575B1 - Coupe-circuit à fusible pour conduite d'alimentation en énergie de véhicule à moteur - Google Patents

Coupe-circuit à fusible pour conduite d'alimentation en énergie de véhicule à moteur Download PDF

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Publication number
EP2545575B1
EP2545575B1 EP11701968.7A EP11701968A EP2545575B1 EP 2545575 B1 EP2545575 B1 EP 2545575B1 EP 11701968 A EP11701968 A EP 11701968A EP 2545575 B1 EP2545575 B1 EP 2545575B1
Authority
EP
European Patent Office
Prior art keywords
connection
gap
fuse according
flaps
connection flaps
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.)
Active
Application number
EP11701968.7A
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German (de)
English (en)
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EP2545575A1 (fr
Inventor
Wolfgang Hentschel
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.)
Auto Kabel Management GmbH
Original Assignee
Auto Kabel Management 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 Auto Kabel Management GmbH filed Critical Auto Kabel Management GmbH
Publication of EP2545575A1 publication Critical patent/EP2545575A1/fr
Application granted granted Critical
Publication of EP2545575B1 publication Critical patent/EP2545575B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01H2039/008—Switching devices actuated by an explosion produced within the device and initiated by an electric current using the switch for a battery cutoff

Definitions

  • the subject matter relates to a circuit breaker for motor vehicle power lines, in particular with a connecting part formed with connecting straps, which can be separated pyrotechnically.
  • Pyrotechnic fuses are well known in automotive engineering.
  • EP 0 665 566 A1 An electrical safety switch is known, which can be triggered by pyrotechnic means.
  • the safety switch is triggered such that a propellant charge acts on a movably arranged contact part and that the movement of the contact part of this is brought out of engagement with another contact part to interrupt the electrical path.
  • a piston is always guided in a sleeve. The piston is driven out of the sleeve by means of a pyrotechnic propellant.
  • the safety switch described is expensive to manufacture and thus costly.
  • an electrical safety switch which can be triggered pyrotechnic.
  • an electrical body has a predetermined separation area that can be separated into two conductor sections. It is proposed that the predetermined separation region has a cavity in which the pyrotechnic igniter is mounted. When igniting the target separation region is severed by means of the pyrotechnic igniter.
  • the object of the object was to provide a circuit breaker for motor vehicle power lines available, which is structurally simple to manufacture and low material cost feasible.
  • connection lugs fulfill two functions.
  • the connection lugs are designed to form an electrical path, which is interrupted when triggered.
  • the connecting straps serve directly to seal the housing, so that the pyrotechnic igniter can trigger a sufficiently high gas pressure on the connecting lugs or the connecting part in the event of triggering.
  • the connecting part is formed from a solder material.
  • the connection tabs need only be soldered together. This can be done, for example, in the context of a continuous soldering.
  • the terminal lugs can be stamped and immediately thereafter passed through a solder oven, in which the solder material, according to the invention, flows in the gap formed between the terminal lugs and closes this gap and thus simultaneously forms an electrical path between the terminal lugs and the Connecting connecting plates mechanically together.
  • the connecting part is arranged in a gap formed between the terminal lugs.
  • the gap is formed in particular during the production of the connection tabs, for example when punching them.
  • punching a gap can be formed, which has a width of 1mm or smaller.
  • connecting webs preferably on both sides of the gap, remain between the terminal lugs.
  • the connecting webs may be formed, for example, during stamping in such a way that it protrudes from the surface spanned between the terminal straps.
  • These connecting webs can first be used to leave the connecting lugs in one piece.
  • the connecting webs may be parallel to each other, along the outer peripheral line of the terminal lugs, without protruding from the surface spanned between the terminal lugs. Then, by suitable guidance of the punching tools, the gap can be reduced, in which the connecting straps are pressed towards each other and the connecting webs are thus elastically deformed.
  • the connecting webs are also pressed out of the area spanned between the connecting tabs so that they protrude from the connecting tabs.
  • the webs cause the gap remains in the intended size and the connecting straps are no longer separated.
  • the connecting lugs can be removed, eg by milling.
  • the gap runs transversely to the direction of extension of the connecting lugs.
  • the necessary force to split the predetermined breaking point is low and / or also increases the separation safety, as it can not lead to tilting of the terminal lugs at the predetermined breaking point.
  • connection tabs mesh in the area of the gap in such a way that the connection tabs close the gap.
  • a positive connection for receiving tensile forces is thereby formed.
  • the terminal lugs engage each other in such a way that they can absorb a tensile force.
  • the connection straps it is preferable for the connection straps to be stable in position relative to one another when a tensile force acts on them.
  • the connecting lugs are dovetail-shaped or folded in the region of the gap.
  • the form itself already achieves a positive fit, at least in one direction of movement, between the connecting lugs.
  • a fold can be such that the connection tabs hook into one another.
  • a first connecting lug may be bent such that the end of the first connecting lug points in the direction of the first connecting lug and a second connecting lug may be bent such that the end of the second connecting lug points in the direction of the second connecting lug.
  • the connecting part is a galvanically applied material which electrically closes the gap.
  • a gap is formed between the terminal lugs.
  • This gap can be bridged by connecting webs.
  • the gap is preferably less than 50 ⁇ m , more preferably less than 20 ⁇ m wide.
  • the gap is electrically and mechanically closed by the coating material, which means that the coating material fills the gap.
  • the possibly still existing connecting webs can be removed, in particular by milling along the long edges of the connecting lugs.
  • the terminal lugs are then connected to each other only by the galvanic coating material electrically and mechanically.
  • the terminal lugs are technological inclined by the igniter.
  • a tapered shot channel is formed in the direction of the predetermined breaking point.
  • the terminal lugs have inclined legs, such that the legs span a triangle or a semicircle.
  • the connecting lugs are notched at bending edges and / or have an embossed groove.
  • the notching at the bending edges causes a material weakening, so that a clearly defined bending edge is formed.
  • the groove also causes a clearly defined bending line.
  • connection tabs close an opening of a housing in such a way that the connection part is arranged in the region of the opening.
  • the terminal latches close the housing.
  • the connecting part is arranged in the region of the opening.
  • the opening forms an opening of a firing channel of the igniter.
  • connection tabs are glued to the housing. It is also possible for the connecting straps to be connected to the housing by means of a friction welding process.
  • the housing is preferably made of a plastic material.
  • the walls of the housing are preferably reinforced in the region of the firing channel, such that the walls withstand a higher pressure than the connecting part.
  • the predetermined breaking point in the connecting part is formed by an embossed groove or an embossed perforation. Both the groove and the perforation can contribute to the Breakage point when triggering the pyrotechnic igniter defined along the predetermined breaking point runs.
  • Fig. 1 shows two connecting plates 2, 4 formed as flat parts.
  • the connecting lugs 2, 4 are spaced apart from each other so that a connecting part 6, in the illustrated case a soft solder, can be arranged in a gap 18 between the connecting lugs 2, 4.
  • the connecting part 6 connects the connecting lugs 2, 4 both electrically and mechanically.
  • the connecting lugs 2, 4 close a firing channel 8 of a housing 14 of a squib 10.
  • the housing 14 is made of plastic and the walls of the housing are so strong that they can withstand the gas pressure of the triggered igniter 14.
  • the igniter 10 can be ignited via electrical ignition wires.
  • An ignition pulse can be received, for example, from an airbag control unit.
  • the connecting lugs 2, 4 are glued to the housing 14 in such a way that they seal off the firing channel 8, so that the gas pressure occurring when the squib 10 is ignited is sufficient to separate the connecting part 6.
  • the trigger case is in Fig. 2 shown.
  • the squib 10 is ignited and the connecting lugs 2, 4 are bent in the direction of the firing channel 8 of the squib 10 pioneering.
  • the connecting part 6 is broken and the connecting lugs 2, 4 are connected neither electrically nor mechanically.
  • Fig. 3 shows a plan view of two terminal lugs 2, 4 according to an embodiment. It can be seen that the connection lugs 2, 4 are each provided with a groove 12. The groove 12 serves to define a bending line. This clearly defines along which line the connecting lugs 2, 4 are bent when triggered, so that the connecting part 6 bursts. In the case shown, the connecting part 6 is also formed from a soft solder.
  • connection tabs 12 have notches 13 in the region of the grooves.
  • the notches 13 serve to reduce the material thickness of the terminal lugs 2, 4, so that these bend in the region of the notches as soon as the squib 10 triggers.
  • Fig. 4 shows a plan view of two terminal lugs 2, 4 in the stamped state. It can be seen that the tabs 2, 4 form a gap 18 to each other. This gap 18 can be formed, for example, in the context of a stamping process. Furthermore, it can be seen that two connecting webs 16 connect the connecting lugs 2, 4 with each other. The connecting webs 16 can remain in the stamping process. The connecting webs 16 are formed for example from the original flat part.
  • a single flat part is punched in a punching process, for example, so that the connecting lugs 2, 4 are still connected by means of the connecting webs 16.
  • the connecting webs 16 can be thinner than 1 mm and serve only to position the connecting lugs 2, 4 relative to each other, so that the gap 18 has a certain width.
  • the connection lugs 2, 4 can be moved toward one another, so that the connecting webs 16 are pressed out of the surface A defined between the connection lugs 2, 4.
  • the plastic deformation of the connecting webs 16 causes the width of the gap 10 can be clearly defined.
  • the gap 18 is reduced in this processing step, for example, to less than 50 .mu.m , preferably less than 20 .mu.m .
  • connection tabs 2, 4 connected by means of the connecting webs 16 can be subjected to a galvanic coating process.
  • galvanic Coating process not only the terminal lugs 2, 4 are coated together, but the gap 18 is closed by the coating material.
  • the material for example tin or zinc, penetrate into the gap 18 and close it.
  • the gap 18 is closed and the coating material connects the terminal lugs 2, 4 both mechanically and electrically.
  • the connecting webs can be removed along the long side edges of the connecting lugs 2, 4. This can be done for example by means of milling.
  • the connecting webs 16 are no longer necessary because the connecting lugs 2, 4 are connected to one another by the material applied in the electroplating.
  • the connecting part 6 is galvanically introduced into the gap 18 along which the predetermined breaking point extends.
  • Fig. 5 shows a sectional view through two connecting straps 2, 4, which have two legs 2a, 4a, which are inclined so that these in the installed state according to Fig. 1 pointing away from the squib 10.
  • the legs 2a, 4a form a tapered firing channel, so that the ignition energy of the squib 10 is concentrated on the connecting part 6, whereby this bursts with higher probability and triggers the fuse.
  • Fig. 6 shows a plan view of terminal tab 2, 4, which form a dovetail gap 18 to each other.
  • This gap can also be achieved by means of a chemical coating process, as indicated above. be closed mechanically and electrically. It is also possible that the gap is not dovetailed, but in another way, the terminal plates can latch relative to each other in the direction of propagation.
  • the gap can also be replaced by a perforation. Also, the gap can be replaced by an embossed groove.
  • the fuse shown can be produced particularly cost-effectively with low material costs. However, the tripping safety is always granted.

Landscapes

  • Fuses (AREA)
  • Air Bags (AREA)

Claims (13)

  1. Fusible pour des conduites d'alimentation en énergie d'un véhicule automobile, comprenant
    - une première cosse de connexion (2),
    - une seconde cosse de connexion (4),
    - une pièce de raccordement (6) formant un point destiné à la rupture et raccordant électriquement les cosses de connexion (2, 4),
    où les cosses de connexion (2, 4) et la pièce de raccordement électrique (6) obturent une chambre d'explosion (8) d'une amorce pyrotechnique (10), de manière telle que sous l'effet de la pression gazeuse de l'amorce pyrotechnique (10), produite en cas de déclenchement, le point destiné à la rupture éclate,
    caractérisé
    en ce que les cosses de connexion (2, 4) sont séparées l'une de l'autre par un espace (18),
    en ce que la pièce de raccordement (6) est disposée, dans l'espace (18), en reliant les cosses de connexion (2, 4) l'une à l'autre, mécaniquement et électriquement.
  2. Fusible selon la revendication 1, caractérisé en ce que la pièce de raccordement (6) est formée à partir d'une matière d'apport de brasage.
  3. Fusible selon l'une des revendications 1 ou 2, caractérisé en ce que l'espace (18) est formé par un processus d'estampage formant les cosses de connexion (2, 4).
  4. Fusible selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'espace (18) s'étend de façon transversale par rapport à la direction d'étendue des cosses de connexion (2, 4).
  5. Fusible selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les cosses de connexion (2, 4) sont imbriquées l'une dans l'autre, dans la zone de l'espace (18), de manière telle que les cosses de connexion (2, 4) obturent l'espace et / ou les cosses de connexion (2, 4) sont stables dans leur position l'une par rapport à l'autre, dans le cas d'une force de traction, et / ou en ce que les cosses de connexion (2, 4), dans la zone de l'espace (18), sont formées en forme de queue d'aronde ou en étant pliées.
  6. Fusible selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la pièce de raccordement (6) est recouverte d'un matériau appliqué par galvanisation, de manière telle que l'espace (18) soit électriquement fermé.
  7. Fusible selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les cosses de connexion (2, 4) sont inclinées en s'écartant de l'amorce (10).
  8. Fusible selon la revendication 7, caractérisé en ce que les cosses de connexion (2, 4) présentent des branches inclinées (2a, 4a), de manière telle que les branches (2a, 4a) définissent un triangle ou un demi-cercle.
  9. Fusible selon l'une des revendications 7 ou 8, caractérisé en ce que les cosses de connexion (2, 4) sont mortaisées au niveau de bords de pliage et / ou présentent une rainure (12) formée en creux.
  10. Fusible selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les cosses de connexion (2, 4) obturent une ouverture d'un boîtier (14), de manière telle que la pièce de raccordement (6) soit disposée dans la zone de l'ouverture.
  11. Fusible selon la revendication 10, caractérisé en ce que l'ouverture forme un débouché d'un canal d'éjection de l'amorce (10).
  12. Fusible selon l'une quelconque des revendications 1 à 11, caractérisé en ce que les cosses de, connexion (2, 4) sont collées avec le boîtier (14).
  13. Fusible selon l'une quelconque des revendications 1 à 12, caractérisé en ce que le point destiné à la rupture est formé dans la pièce de raccordement (6), par une rainure formée en creux ou par une perforation formée en creux.
EP11701968.7A 2010-03-11 2011-01-25 Coupe-circuit à fusible pour conduite d'alimentation en énergie de véhicule à moteur Active EP2545575B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010011150A DE102010011150B4 (de) 2010-03-11 2010-03-11 Elektrische Sicherung für Kraftfahrzeugenergieleitungen und Herstellungsverfahren für eine solche Sicherung
PCT/EP2011/050934 WO2011110376A1 (fr) 2010-03-11 2011-01-25 Coupe-circuit à fusible pour conduite d'alimentation en énergie de véhicule à moteur

Publications (2)

Publication Number Publication Date
EP2545575A1 EP2545575A1 (fr) 2013-01-16
EP2545575B1 true EP2545575B1 (fr) 2015-04-01

Family

ID=43899583

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Application Number Title Priority Date Filing Date
EP11701968.7A Active EP2545575B1 (fr) 2010-03-11 2011-01-25 Coupe-circuit à fusible pour conduite d'alimentation en énergie de véhicule à moteur

Country Status (6)

Country Link
US (1) US9425010B2 (fr)
EP (1) EP2545575B1 (fr)
CN (1) CN102834889B (fr)
DE (1) DE102010011150B4 (fr)
ES (1) ES2537390T3 (fr)
WO (1) WO2011110376A1 (fr)

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US7123124B2 (en) * 2003-10-17 2006-10-17 Special Devices, Inc. Pyrotechnic circuit breaker
DE20317189U1 (de) 2003-11-05 2005-03-17 Veigel Andreas Pyrotechnischer Schalter
US7498923B2 (en) * 2004-09-08 2009-03-03 Iversen Arthur H Fast acting, low cost, high power transfer switch
PL1710871T3 (pl) 2005-04-08 2008-01-31 Auto Kabel Man Mbh Przerywacz prądu dla samochodowych elektrycznych przewodów zasilających
DE102006032605A1 (de) * 2006-05-22 2007-11-29 Takata-Petri Ag Verfahren und Vorrichtung zur einmaligen und dauerhaften Trennung einer elektrischen Verbindung, insbesondere in einem Kraftfahrzeug
WO2007134875A1 (fr) * 2006-05-22 2007-11-29 Takata-Petri Ag Procédé et dispositif pour la séparation unique et durable d'une liaison électrique, en particulier dans un véhicule automobile
US7639114B2 (en) * 2006-11-22 2009-12-29 Tsung-Mou Yu Temperature fuse protection device
JP5359982B2 (ja) * 2009-06-29 2013-12-04 豊田合成株式会社 車両の電気回路遮断装置

Also Published As

Publication number Publication date
CN102834889A (zh) 2012-12-19
CN102834889B (zh) 2015-11-25
EP2545575A1 (fr) 2013-01-16
US9425010B2 (en) 2016-08-23
US20130009745A1 (en) 2013-01-10
ES2537390T3 (es) 2015-06-08
DE102010011150A1 (de) 2011-09-15
DE102010011150B4 (de) 2012-03-29
WO2011110376A1 (fr) 2011-09-15

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