EP0663679A2 - Fusible électrique et méthode de sa fabrication - Google Patents

Fusible électrique et méthode de sa fabrication Download PDF

Info

Publication number
EP0663679A2
EP0663679A2 EP94118243A EP94118243A EP0663679A2 EP 0663679 A2 EP0663679 A2 EP 0663679A2 EP 94118243 A EP94118243 A EP 94118243A EP 94118243 A EP94118243 A EP 94118243A EP 0663679 A2 EP0663679 A2 EP 0663679A2
Authority
EP
European Patent Office
Prior art keywords
radiation
insulating part
thermoplastic
electrical fuse
crosslinked
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
EP94118243A
Other languages
German (de)
English (en)
Other versions
EP0663679A3 (fr
EP0663679B1 (fr
Inventor
Felix Fischbach
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.)
Schurter AG
Original Assignee
Schurter AG
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 Schurter AG filed Critical Schurter AG
Publication of EP0663679A2 publication Critical patent/EP0663679A2/fr
Publication of EP0663679A3 publication Critical patent/EP0663679A3/fr
Application granted granted Critical
Publication of EP0663679B1 publication Critical patent/EP0663679B1/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
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/02—Manufacture of fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/165—Casings
    • H01H85/17—Casings characterised by the casing material

Definitions

  • the invention relates to an electrical fuse according to the preamble of claim 1 and a method for its manufacture.
  • Insulators in electrical fuses must meet a number of conditions, such as heat resistance, tracking resistance and arc resistance.
  • Electrically insulating materials which have the required heat resistance, tracking resistance and arc resistance, are usually not moldable by injection molding and can therefore only be produced in simple forms (eg: glass, ceramic, unsaturated polyester); if they can be shaped by injection molding, this is done with great effort (eg: fluorine-containing thermoplastics).
  • thermosets for low service temperatures e.g.: MF, MP, EP, UP, PUR
  • PI, PF, EP thermosets for high service temperatures
  • Electrically insulating materials from the group of fluorine-free thermoplastics can be easily molded by injection molding, but either have poor heat resistance (e.g. PE, PA, PP) with good tracking resistance and arc resistance, or good heat resistance with poor tracking resistance and arc resistance (e.g. PSU , PES, PEK, PEEK, PPS).
  • poor heat resistance e.g. PE, PA, PP
  • good heat resistance with poor tracking resistance and arc resistance e.g. PSU , PES, PEK, PEEK, PPS.
  • Fuses are mass-produced articles in which the ease of manufacture, in particular of the insulating body, is of decisive importance without any restrictions in terms of shape, and the reworking that is necessary with thermosets should be avoided rationally. At least where fuses are soldered into a circuit (especially with SMD), resistance to soldering heat is required, and resistance to leakage current and arc resistance are also required.
  • the invention has for its object to provide a fuse, the insulating part is easy to manufacture by injection molding and which in addition to good heat resistance also has good tracking resistance and good arc resistance.
  • thermoplastic that is easily moldable and has good tracking resistance and arcing inhibition, but has poor heat resistance, can be greatly improved in its heat resistance by radiation crosslinking without losing its good tracking resistance and arc inhibition that was present in the uncrosslinked state.
  • crosslinking intensifiers e.g. triallyl isocyanurate, with a melting point of 24 to 26 degrees Celsius
  • crosslinking intensifiers e.g. triallyl isocyanurate, with a melting point of 24 to 26 degrees Celsius
  • Electron beams in a dose of 10 MRad, corresponding to 100 kGy, are suitable for radiation crosslinking for the purposes of the invention.
  • a radiation cross-linked polyamide e.g. a radiation-crosslinked polyamide 6.6 has proven suitable for the invention.
  • the insulating part of the fuse can be produced by injection molding from thermoplastic which has not yet been crosslinked by radiation (in particular polyamide, preferably polyamide 6.6) and the radiation crosslinking can be carried out on the molded thermoplastic part.
  • radiation in particular polyamide, preferably polyamide 6.6
  • thermoplastic part By crosslinking on the finished fuse cannot be ruled out, it is preferred to crosslink the thermoplastic part by irradiation and only then to combine it with the electrically conductive parts.
  • the part enclosing the fuse element (for example a fuse link) is made of the radiation-crosslinked thermoplastic (e.g. polyamide, currently preferably polyamide 6.6) in the case of fuses, this results in excellent arc resistance.
  • the radiation-crosslinked thermoplastic e.g. polyamide, currently preferably polyamide 6.6
  • the invention is particularly advantageous for the insulating parts including a fuse element.
  • thermoplastic capable of radiation crosslinking in particular polyamide, preferably polyamide 6.6, is low and that the radiation can be carried out at low cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuses (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
EP19940118243 1994-01-13 1994-11-19 Fusible électrique et méthode de sa fabrication Expired - Lifetime EP0663679B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH100/94 1994-01-13
CH10094A CH689681A5 (de) 1994-01-13 1994-01-13 Elektrische Sicherung und Verfahren zu ihrer Herstellung.

Publications (3)

Publication Number Publication Date
EP0663679A2 true EP0663679A2 (fr) 1995-07-19
EP0663679A3 EP0663679A3 (fr) 1996-01-10
EP0663679B1 EP0663679B1 (fr) 1998-06-10

Family

ID=4179263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940118243 Expired - Lifetime EP0663679B1 (fr) 1994-01-13 1994-11-19 Fusible électrique et méthode de sa fabrication

Country Status (4)

Country Link
EP (1) EP0663679B1 (fr)
JP (1) JPH07220615A (fr)
CH (1) CH689681A5 (fr)
DE (1) DE59406206D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003044818A1 (fr) * 2001-11-20 2003-05-30 Mitsubishi Denki Kabushiki Kaisha Disjoncteur
EP1467395A4 (fr) * 2001-12-27 2005-03-30 Yazaki Corp Coupe-circuit fusible pour automobile
EP1923897A3 (fr) * 2006-11-16 2009-01-07 ABB PATENT GmbH Commutateur électrique
WO2011113721A3 (fr) * 2010-03-15 2011-11-10 Osram Opto Semiconductors Gmbh Composant optoélectronique et son procédé de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005044540A1 (de) * 2005-09-17 2007-03-22 Abb Patent Gmbh Elektrisches Installationsschaltgerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848215A (en) * 1973-11-09 1974-11-12 Chase Shawmut Co Fluid-tight electric fuse
US3913051A (en) * 1974-05-22 1975-10-14 Mc Graw Edison Co Protector for electric circuits
DE8704621U1 (de) * 1987-03-28 1987-07-02 Wickmann-Werke GmbH, 5810 Witten Elektrische Sicherung
IL89671A0 (en) * 1988-03-29 1989-09-28 Raychem Corp Heat-recoverable article and method for enclosing and sealing a substrate
JPH02213456A (ja) * 1989-02-15 1990-08-24 Sumitomo Electric Ind Ltd ヒューズ

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003044818A1 (fr) * 2001-11-20 2003-05-30 Mitsubishi Denki Kabushiki Kaisha Disjoncteur
EP1467395A4 (fr) * 2001-12-27 2005-03-30 Yazaki Corp Coupe-circuit fusible pour automobile
EP1923897A3 (fr) * 2006-11-16 2009-01-07 ABB PATENT GmbH Commutateur électrique
WO2011113721A3 (fr) * 2010-03-15 2011-11-10 Osram Opto Semiconductors Gmbh Composant optoélectronique et son procédé de fabrication
US9121585B2 (en) 2010-03-15 2015-09-01 Osram Opto Semiconductors Gmbh Optoelectronic component and method for the production thereof

Also Published As

Publication number Publication date
JPH07220615A (ja) 1995-08-18
DE59406206D1 (de) 1998-07-16
CH689681A5 (de) 1999-08-13
EP0663679A3 (fr) 1996-01-10
EP0663679B1 (fr) 1998-06-10

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