EP1729317A1 - Conducteur fusible pour coupe-circuit enroulée en hélice avec fermeture en plastique - Google Patents

Conducteur fusible pour coupe-circuit enroulée en hélice avec fermeture en plastique Download PDF

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Publication number
EP1729317A1
EP1729317A1 EP05011930A EP05011930A EP1729317A1 EP 1729317 A1 EP1729317 A1 EP 1729317A1 EP 05011930 A EP05011930 A EP 05011930A EP 05011930 A EP05011930 A EP 05011930A EP 1729317 A1 EP1729317 A1 EP 1729317A1
Authority
EP
European Patent Office
Prior art keywords
core
winding
plastic material
plastic
fusible conductor
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
EP05011930A
Other languages
German (de)
English (en)
Other versions
EP1729317B1 (fr
Inventor
Ludger Richter
Manfred Rupalla
Peter Pösnicker
Uwe RÖDER
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.)
Wickmann Werke GmbH
Original Assignee
Wickmann Werke 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 Wickmann Werke GmbH filed Critical Wickmann Werke GmbH
Priority to DE502005001781T priority Critical patent/DE502005001781D1/de
Priority to EP05011930A priority patent/EP1729317B1/fr
Priority to CNA2006100930129A priority patent/CN1873875A/zh
Priority to JP2006154828A priority patent/JP4733570B2/ja
Priority to US11/421,978 priority patent/US20070132539A1/en
Publication of EP1729317A1 publication Critical patent/EP1729317A1/fr
Application granted granted Critical
Publication of EP1729317B1 publication Critical patent/EP1729317B1/fr
Expired - Fee Related 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
    • 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
    • H01H85/38—Means for extinguishing or suppressing arc
    • H01H85/42—Means for extinguishing or suppressing arc using an arc-extinguishing gas
    • 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
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V
    • 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
    • H01H85/18—Casing fillings, e.g. powder
    • H01H85/185—Insulating members for supporting fusible elements inside a casing, e.g. for helically wound fusible elements

Definitions

  • the invention relates to a winding fuse for a fuse element with an electrically insulating or high-resistance core around which at least one fuse wire is wound. Furthermore, the invention relates to methods for producing such a winding winding conductor.
  • Wickelschmelzleiter the type mentioned are used for some time in fuse components.
  • a fusible conductor wire is wound around a core made of a plurality of glass fibers, wherein a predetermined winding density is to be maintained in order to achieve desired properties.
  • Such a prefabricated winding fusible conductor is then cut to a predetermined length and introduced, for example, in a ceramic tube and thereby electrically connected to the electrically conductive end caps, which are placed on the tube and at the same time mechanically fastened.
  • electrical and mechanical attachment of the winding fusible conductor is soldered, for example, to the end caps.
  • the object of the invention is therefore to provide a fuse component with a winding fuse, which shows an improved turn-off.
  • the winding fusible conductor for a fuse element having an electrically insulating or high-resistance core around which at least one fuse wire is wound is characterized in that a temperature-resistant plastic is applied to the core such that at least the surface areas of the core exposed between the fuse wire are covered by the plastic and the gaps formed between the wound fuse wire wire and the surface of the core (ie, gaps) with the plastic substantially (ie, at least to the extent that no capillary action is caused) are filled.
  • the invention is based on the recognition that the breaking capacity is worsened by residues of the flux used in the soldering of the fusible wire, these remnants being due to the fact that the flux during soldering due to the capillary action in gaps and interstices of the core or between the wound fuse wire and the Penetrate the surface of the core.
  • a temperature-resistant plastic according to the invention constitutes a "seal" of the gaps and spaces which prevents penetration of the flux.
  • a winding fusible conductor is produced by first impregnating a core with a non-hardened liquid plastic material, wherein the surface of the core is coated with a layer of the plastic material, then the impregnated core is wrapped with the fusible conductor wire prior to curing of the plastic material and finally the Plastic material is allowed to harden, so that a temperature-resistant plastic is formed.
  • the amount of uncured plastic liquid material in the core can be sized so that, as the core is wound, all interstices and gaps between the fuse wire core and core and within the core are closed but the outwardly facing surfaces of the fuse wire remain free. This has the advantage that the winding melting conductor can be soldered remains without the plastic needs to be removed before.
  • the fuse wire is first wound on the core. Subsequently, the winding fusible conductor is coated with a not yet cured liquid plastic material such that the plastic material can penetrate into intermediate spaces between the fuse wire and the core and in any existing pores or gaps of the core. Then the plastic material hardens, so that a temperature-resistant plastic is formed.
  • This alternative method offers the advantage that a conventional winding fusible conductor can be used as the starting material.
  • the flux can no longer penetrate into the spaces between the fusible conductor wire and the core and into the core, as a result of which the switching capacity is improved.
  • the fuse wire is fixed after curing of the plastic on the core, which allows higher winding densities of, for example, over 60%.
  • the core is comprised of a plurality of glass and / or ceramic fibers, with the interstices between the individual fibers also being substantially filled by the plastic.
  • the cores of a plurality of parallel glass or ceramic fibers are compressed during winding, so that - in the first manufacturing process alternative - after a prior impregnation of the fibers with the plastic material, a part of the plastic material is pressed out during winding from the core and remains between the wire windings. If a relatively large excess of the liquid plastic material remains, then the excess plastic material can be subsequently removed by mechanical stripping of the winding fusible conductor.
  • the plastic material used is a silicone which is applied in the liquid state and cured later.
  • the cured silicone is temperature resistant.
  • one or more arc-quenching materials are added to the silicone, preferably a melamine powder. This additionally supports the arc-quenching effect of the silicone coating.
  • FIG. 1 is a schematic representation of a section of a winding fusible conductor 1 according to the invention.
  • a fusible conductor wire 2 is wound on an insulating or high-resistance core 3.
  • the fuse wire 2 is, for example, a wire made of a tin-plated silver-copper alloy core having a circular cross section and a diameter in the range of 0.05 mm to 0.5 mm.
  • the cross section need not be circular, but it can be wound, for example, a metal strip. Thinner or thicker wires are also conceivable depending on the desired properties.
  • the core 3 could for example consist of a more or less flexible rod of an insulating material (eg glass, glass ceramic, plastic or ceramic) or high-resistance material (eg semiconductor or high-resistance metal conductor).
  • the core is a bundle of glass and / or ceramic fibers.
  • the core consists of glass fiber, ie a bundle of twisted or spun glass fibers. In the raw state lie the glass fibers of the glass silk relatively loose together, so that many spaces are formed. When wrapping the glass silk core 3 with the fuse wire 2, the glass fiber is compressed, that is, the individual glass fibers are pressed together.
  • the core 3 is soaked before wrapping with a (still) liquid silicone plastic, so that fill the spaces between the glass fibers with the plastic material.
  • a (still) liquid silicone plastic so that fill the spaces between the glass fibers with the plastic material.
  • not all gaps need to be filled; it is basically sufficient if the outer layers of the glass silk fill with the plastic, so that the glass silk is sealed so that no more liquids could get into the possibly still existing inner spaces.
  • a part of the plastic material is pushed out of the glass fiber and remains on the core 3 and fills the gaps (gaps) between the fuse wire 2 and the core 3. Remains too much excess plastic material, it can be stripped in still liquid state of the winding fuse 1.
  • FIG. 1 shows the remaining plastic material 4 between the individual turns of the fusible conductor wire 2.
  • the plastic hardens, wherein hardening in the sense of setting is to be understood.
  • the plastic material does not need to be hard.
  • the cured temperature-resistant plastic preferably remains soft or elastic, so that the winding fusible conductor 1 remains flexible.
  • a silicone is preferably used, wherein the silicone material for example consists of two components, which are mixed before application.
  • the silicone arc-quenching materials in particular melamine powder added.
  • ten parts of silicone resin are mixed with four parts of melamine powder.
  • FIG 2 shows a schematic representation of a fuse element 5, in which the winding fuse 1 according to the invention is used.
  • the winding fusible conductor 1 comprises a core 3 onto which the fuse wire 2 is wound and in which the spaces between the turns of the fuse wire 2 are filled with the plastic material 4.
  • the applied plastic material 4 is shown for clarity only on the left half of the winding fusible conductor 1.
  • the fuse 5 comprises an insulating tube 6 made of glass, plastic or ceramic, in the interior 7 of Wikkelschmelzleiter 1 is added.
  • the tube 6 may have a round or rectangular cross-section.
  • the interior 7 may be filled with air, gas filled, empty or filled with another material.
  • Two end caps 8 are placed on the ends of the tube 6 (eg, soldered or glued on).
  • the fusible conductor 1 is soldered onto the bottoms of the end caps 8, the solder being shown schematically in FIG. 2 by the solder regions 9. But the solder joint can also be much smaller than it is shown in Figure 2 with the hatched areas 9.
  • the hatched area 9 may in this case also be a sealing material which is introduced into the end caps.
  • the winding fusible conductor 1 is soldered onto the inner bottoms of the end caps 8, a flux is of course used in addition to the solder.
  • the sealing of the fusible conductor 1 according to the invention by means of the plastic material 4 prevents melted or liquid parts of the flux from migrating along the winding fusible conductor due to the capillary action. Such no longer removable flux residues would form a source of carbon and, in the event of shutdown (severing) of the fusible conductor, form conductive bridges which assist in reigniting the arc in the succeeding halfwaves.
  • FIG. 3 shows an alternative embodiment of a fuse component 10.
  • Two contact pins 12 are led through a base 11.
  • a protective cap 13 is placed on the base 11.
  • the ends of the connecting pins 12 open into terminal lugs 14, to each of which one end of a winding semiconductor conductor 1 is attached.
  • the winding fusible conductor 1 is attached to the terminal lugs 14, each with a solder joint 1.5.
  • a Wikkelschmelzleiter 1 can be used in which are wound around the core 3 parallel to the fuse wire 2, one or more insulating fibers, the adjacent windings of the fuse wire 2 thus hold at a predetermined distance from each other.
  • the combination of such a development with the seal according to the invention improves the breaking capacity and the reproducibility of the properties of the winding conductor.

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  • Fuses (AREA)
EP05011930A 2005-06-02 2005-06-02 Conducteur fusible pour coupe-circuit enroulée en hélice avec fermeture en plastique Expired - Fee Related EP1729317B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE502005001781T DE502005001781D1 (de) 2005-06-02 2005-06-02 Wickelschmelzleiter für ein Schmelzsicherungsbauelement mit Kunststoffversiegelung
EP05011930A EP1729317B1 (fr) 2005-06-02 2005-06-02 Conducteur fusible pour coupe-circuit enroulée en hélice avec fermeture en plastique
CNA2006100930129A CN1873875A (zh) 2005-06-02 2006-06-02 用于用塑料加封的熔断保险丝构件的卷绕保险丝
JP2006154828A JP4733570B2 (ja) 2005-06-02 2006-06-02 プラスチックシールを有するヒューズエレメントのための可溶性螺旋状導体
US11/421,978 US20070132539A1 (en) 2005-06-02 2006-06-02 Fusible spiral conductor for a fuse component with a plastic seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05011930A EP1729317B1 (fr) 2005-06-02 2005-06-02 Conducteur fusible pour coupe-circuit enroulée en hélice avec fermeture en plastique

Publications (2)

Publication Number Publication Date
EP1729317A1 true EP1729317A1 (fr) 2006-12-06
EP1729317B1 EP1729317B1 (fr) 2007-10-24

Family

ID=35276458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05011930A Expired - Fee Related EP1729317B1 (fr) 2005-06-02 2005-06-02 Conducteur fusible pour coupe-circuit enroulée en hélice avec fermeture en plastique

Country Status (5)

Country Link
US (1) US20070132539A1 (fr)
EP (1) EP1729317B1 (fr)
JP (1) JP4733570B2 (fr)
CN (1) CN1873875A (fr)
DE (1) DE502005001781D1 (fr)

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US20070236323A1 (en) * 2004-02-21 2007-10-11 Wickmann-Werke Gmbh Fusible Conductive Coil with an Insulating Intermediate Coil for Fuse Element
US20090108980A1 (en) 2007-10-09 2009-04-30 Littelfuse, Inc. Fuse providing overcurrent and thermal protection
US8937524B2 (en) * 2009-03-25 2015-01-20 Littelfuse, Inc. Solderless surface mount fuse
US9117615B2 (en) 2010-05-17 2015-08-25 Littlefuse, Inc. Double wound fusible element and associated fuse
TWM479540U (zh) * 2014-02-19 2014-06-01 Ceramate Technical Co Ltd 安全式電源插座及具有該電源插座的電源延長裝置
WO2016127846A1 (fr) * 2015-02-14 2016-08-18 南京萨特科技发展有限公司 Élément de protection
KR101878031B1 (ko) * 2016-05-03 2018-07-12 홍익대학교 산학협력단 코일 형상의 배선이 구비된 신축성 배선 구조의 제조방법 및 이 제조방법으로 제조된 신축성 배선 구조
US10978267B2 (en) * 2016-06-20 2021-04-13 Eaton Intelligent Power Limited High voltage power fuse including fatigue resistant fuse element and methods of making the same
JP6956785B2 (ja) 2016-12-08 2021-11-02 リンテック・オブ・アメリカ・インコーポレイテッド 人工筋肉アクチュエータの改良
DE102019004223A1 (de) * 2019-05-16 2020-11-19 Siba Fuses Gmbh Schmelzleiter und Sicherung
US20220122799A1 (en) * 2020-10-15 2022-04-21 Littelfuse, Inc. Fuse with arc quenching silicone composition

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US20070132539A1 (en) 2007-06-14
EP1729317B1 (fr) 2007-10-24
JP4733570B2 (ja) 2011-07-27
DE502005001781D1 (de) 2007-12-06
JP2006339161A (ja) 2006-12-14
CN1873875A (zh) 2006-12-06

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