EP1511057A1 - Fusible tubulaire avec capuchons d'extrémités et éléments d'étanchéité en matière synthétique - Google Patents

Fusible tubulaire avec capuchons d'extrémités et éléments d'étanchéité en matière synthétique Download PDF

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Publication number
EP1511057A1
EP1511057A1 EP04018792A EP04018792A EP1511057A1 EP 1511057 A1 EP1511057 A1 EP 1511057A1 EP 04018792 A EP04018792 A EP 04018792A EP 04018792 A EP04018792 A EP 04018792A EP 1511057 A1 EP1511057 A1 EP 1511057A1
Authority
EP
European Patent Office
Prior art keywords
tube
end caps
interior
sealing body
cap
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
EP04018792A
Other languages
German (de)
English (en)
Other versions
EP1511057B1 (fr
Inventor
Lutger Dipl.Ing Richter
André Dipl.Ing Jöllenbeck
Andreas Dipl.Ing Baus
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
Publication of EP1511057A1 publication Critical patent/EP1511057A1/fr
Application granted granted Critical
Publication of EP1511057B1 publication Critical patent/EP1511057B1/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
    • H01H85/04—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
    • H01H85/0411—Miniature fuses
    • H01H85/0415—Miniature fuses cartridge type
    • H01H85/0418—Miniature fuses cartridge type with ferrule type end contacts
    • 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
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • H01H85/157—Ferrule-end contacts
    • 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
    • H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H01H85/003—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices casings for the fusible element

Definitions

  • the invention relates to a fuse element with a fusible conductor, located in a gas-filled interior a cylindrical tube between two end faces of the Tubule extends, with two end caps from an electric conductive material so on the two ends of the tube are applied, that in each case an electrical contact to the Melt conductor is made. Furthermore, the invention relates a method of manufacturing such a fuse component.
  • the cylindrical tube made a ceramic material and a circular cylindrical Interior and a square outer contour with rounded Has edges.
  • the fuse element is for example a wire that extends diagonally in the interior in such a way that he only the walls of the tube at the Ends touched.
  • the wire of the fusible conductor is around the Front sides of the tube led around, the ends of the Melt wire on the outer walls of the tube.
  • On the two ends of the tube are metallic End caps fitted.
  • the end caps can be off an elastic material and on the ends of the tube be pressed on, with the pressing not only for a tight fit of the end caps, but beyond that too provides electrical contact to the fusible conductor.
  • the Metal caps can also be glued to the ends of the tube or after appropriate preparation of the surface of the Outer wall of the tube to be soldered on this. There are a number of techniques of applying the end caps are known Both for a tight fit of the caps as well ensure good electrical contact with the fuse element.
  • a disadvantage of a fuse element with hermetic dense interior is, however, that the pressure increase is generated in the interior even if the fuse component, for example, during the manufacturing process, is heated from the outside. Such heating occurs, for example then, when to make a solder joint between the ends of the fusible conductor and the attached metallic End caps the end caps briefly to a higher Temperature be brought.
  • a temperature increase can also occur in a curing process of an adhesive that the End caps should connect to the tube.
  • the one with such Warming associated pressure rise in the interior of the tube leads to a desired load on the fuse component and possibly to a formation of a pressure equalization channel (Capillary channel) between the interior of the Tube and the environment through the gap between the tube and the end cap.
  • a pressure equalization channel Capillary channel
  • the object of the invention is therefore, a fuse component of the type mentioned above, whose interior hermetically sealed in operation, but in which when sudden temperature and pressure rises during the Component manufacturing problems occurring above Kind be avoided.
  • the fuse element according to the invention is a Component of the type mentioned, which is characterized is that at least one of the two ends of the Tube in a space between the cap bottom of the End cap and the front side of the tube and in one at the Cap bottom adjoining part of the interior of the tube Sealing body of a predominantly elastically compressible but at the same time creepable (in the sense of flowable) plastic material is introduced, wherein the sealing body during Placing the end cap during manufacture of the fuse element between the front and the cap bottom has been compressed. The compressed in the introduction Sealing body is then anxious to expand again, being mainly in the interior of the tube inside.
  • fuse component allows a relative simple production because instead of any liquid Sealant material is a substantially solid seal body is used, whose shape previously to the dimensions of End cap can be adjusted.
  • the elastically compressible but at the same time creepable Plastic material is preferably a silicone.
  • This plastic material can at the subsequent manufacturing steps well withstand occurring temperatures.
  • Such a seal body is preferably dimensioned so that it the cap bottom filled in and pressed hard when putting the caps and then penetrates into the interior of the tube. Due to the creep of the material is subsequently the preferably diagonally through the interior Fusible conductor completely enclosed in the area of the ends.
  • a fuse introduced into the interior of a cylindrical tube being at both ends around the ends of the tube is guided on the outer wall of the tube.
  • end caps are attached to the ends of the tube with the put the end faces around the melt conductor ends. This is an electrical contact between the end caps and made the fusible link ends.
  • a sealing body from a predominantly elastically compressible and at the same time introduced creep plastic material, wherein compressed the sealing body when placing the end cap becomes.
  • the fuse element becomes for securing an electrical contact and / or mechanical Fixing the end caps to the tube of a temperature treatment subjected to temperatures above 150 ° C.
  • a hermetic seal of the interior forms by creeping (slow flow) of the material of the Sealing body off. In this manufacturing process is ensures that at the temperature treatment step possibly forming channels then by flowing into it Material to be closed again.
  • the inventive method easily allow the production of Fusible elements with hermetic sealing of the Interior.
  • a fuse component 1 which has a fusible conductor 2, which is located in an interior 3 of a cylindrical Tube 4 extends diagonally.
  • the fuse element 2 can in the embodiment shown as well as in all others Embodiments of the invention, both a wire with any Cross-sectional profile as well as an insulating one Core be wound fuse wire.
  • the tube 4 has a cylindrical shape, which is an arbitrary cross-sectional profile may have.
  • the interior 3 is, for example, circular cylindrical.
  • the tube 4 is made of an electrically insulating Material manufactured, for example from glass, ceramic or plastic.
  • the Melt conductor 2 is guided diagonally through the interior 3. at other embodiments are other arrangements of the fusible conductor 2 in the interior 3 conceivable.
  • the fuse element 2 is preferably wrapped around the end faces 8 of the tube 4, so that the ends of the fusible conductor 2 on the outer walls of the Rest tube.
  • End caps 5 made of an electrically conductive material.
  • the metallic end caps are set up in this way, on the one hand, an electrical contact between the end caps 5 and the fusible conductor 2 and on the other hand a mechanically fixed connection between the end caps 5 and the Tube 4 is formed.
  • the fuse element 2 is with the end caps 5, for example, connected via an external soldering, d. h.,
  • a solder joint 6 connects the on the outer wall of the tube 4 resting ends of the fuse conductor 2 with the inner walls of the metallic end caps 5.
  • each one Inserted sealing body 7 is made made of a plastic material that is elastically compressible (i.e. H. elastically deformable), but at the same time capable of creeping (in the sense of of flowable) is.
  • FIG. 2 shows a schematic cross-sectional view, wherein the section out in the designated in Figure 1 with A level is.
  • FIG. 2 shows the state for a certain time the manufacture of the fuse element suitable for a sufficient flow of the introduced material of the seal body 7 is sufficient.
  • Figure 2 is that of the inner wall of the tube 4 in the cut area spaced fuse element 2 completely from the material enclosed by the seal body 7. Such enclosing is not possible with a purely elastic sealing body, but requires a flowable material.
  • the following is a preferred method for the production given a fuse element according to the invention.
  • the fuse element 2 for the production of the fuse element is initially provided the fuse element 2 in a predetermined length and inserted into the interior 3 of the tube 4 and then bent around the end faces 8 of the tube, so that the ends of the fusible conductor 2 on the outer surfaces of the tube 4 rest.
  • a thermal hardenable adhesive on the end faces 8 over the entire surface applied.
  • the amount of glue and the method of application are chosen so that it is avoided that while or at subsequent process steps larger amounts of the adhesive get into the interior 3 of the tube 4.
  • Subsequently is applied to the outer surfaces of the tube 4 in the places where the fusible conductor 2 rests, each a small amount Applied solder paste.
  • the solder paste contains a flux.
  • the Flux may also not in the interior of the 3 Get the fuse.
  • For this purpose also serves the on the front side 8 applied adhesive. This forms one Barrier and prevents the solder paste by capillary action along the fusible conductor 2 via the end face 8 continues to flow into the interior 3.
  • the End caps 5 prepared by placing in the inner cap bottom molded piece of foam material (a slightly foamed silicone) is inserted.
  • the caps are preferably rectangular, so that the inserted into the cap bottom Piece of foam material also of essentially rectangular shape is.
  • the tube has a Inner diameter of about 2.5 mm and outer dimensions of about 4mm x 4mm x 9.6mm.
  • the end caps are about 2.8 mm deep and have a cross section of about 4.4 mm x 4.4 mm.
  • the in the cap bottom inserted foam gasket body has a thickness of about 1.5 - 2.0 mm.
  • the prepared end caps are placed on the ends of the tube set with a predetermined force, so that deforms the foam and the applied adhesive distributed.
  • the caps preferably successively heated
  • the adhesive 5 is pre-cured so that the caps mechanically fixed become.
  • the adhesive becomes the fuse component to temperatures above 150 ° C, for example about Heated to 300 ° C.
  • the case in the interior 3 due to the gas filling resulting overpressure can thereby partly offset be that a thin channel between the interior and the external environment, for example, along the Melting conductor or along the wall of the tube 4 forms.
  • the Backup device again to a temperature of, for example heated to about 150 ° C, so that the adhesive final is cured.
  • the seal body could 7 fill only a portion of the cap bottom, for example be annular, so that it is the space between completely fills the end faces 8 and the cap base, but only to a lesser extent in the interior 3 penetrates.
  • a sealing body of the type mentioned only at one of the two Ends of the tube is introduced; the other end could be hermetically sealed in a conventional manner, for example by pouring with a liquid and then curing plastic.

Landscapes

  • Fuses (AREA)
EP04018792A 2003-08-25 2004-08-07 Fusible tubulaire avec capuchons d'extrémités et éléments d'étanchéité en matière synthétique Expired - Fee Related EP1511057B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10339441A DE10339441B3 (de) 2003-08-25 2003-08-25 Röhrenschmelzsicherungsbauelement mit Endkappen mit hermetisch abdichtender Kunststoffdichtungskörpereinlage
DE10339441 2003-08-25

Publications (2)

Publication Number Publication Date
EP1511057A1 true EP1511057A1 (fr) 2005-03-02
EP1511057B1 EP1511057B1 (fr) 2007-05-02

Family

ID=34089215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04018792A Expired - Fee Related EP1511057B1 (fr) 2003-08-25 2004-08-07 Fusible tubulaire avec capuchons d'extrémités et éléments d'étanchéité en matière synthétique

Country Status (3)

Country Link
US (1) US7250843B2 (fr)
EP (1) EP1511057B1 (fr)
DE (2) DE10339441B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101308744B (zh) * 2007-05-18 2010-05-19 爱迪生电气研发（上海）有限公司 熔断器及其装配方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7515031B2 (en) * 2005-06-06 2009-04-07 Cooper Technologies Company Universal fuse engine with modular end fittings
US8368502B2 (en) * 2006-03-16 2013-02-05 Panasonic Corporation Surface-mount current fuse
US8154376B2 (en) * 2007-09-17 2012-04-10 Littelfuse, Inc. Fuses with slotted fuse bodies
US9202656B2 (en) * 2011-10-27 2015-12-01 Littelfuse, Inc. Fuse with cavity block
US9558905B2 (en) * 2011-10-27 2017-01-31 Littelfuse, Inc. Fuse with insulated plugs
CN103890893B (zh) * 2011-10-27 2017-02-01 保险丝公司 具有绝缘塞子的熔丝
US9460882B2 (en) * 2013-03-14 2016-10-04 Littelfuse, Inc. Laminated electrical fuse
US10553385B2 (en) * 2014-05-16 2020-02-04 Kamaya Electric Co., Ltd. Chip fuse and method for producing same
TWI695402B (zh) * 2015-05-19 2020-06-01 日商釜屋電機有限公司 片式熔斷器及其製造方法
US10276338B2 (en) 2016-06-01 2019-04-30 Littelfuse, Inc. Hollow fuse body with trench
US10325744B2 (en) * 2016-06-01 2019-06-18 Littelfuse, Inc. Hollow fuse body with notched ends
CN113471033A (zh) * 2021-07-20 2021-10-01 东莞市贝特电子科技股份有限公司 复合保护器及其制作方法

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4158187A (en) * 1977-08-05 1979-06-12 Gould Inc. Means for affixing ferrules to a fuse casing
US4646053A (en) * 1985-12-30 1987-02-24 Gould Inc. Electric fuse having welded fusible elements
US4656453A (en) * 1982-12-09 1987-04-07 Littelfuse, Inc. Cartridge fuse with two arc-quenching end plugs

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US2953665A (en) * 1958-01-03 1960-09-20 Electric Transmission Ltd Seals
US3144534A (en) * 1960-12-12 1964-08-11 Littelfuse Inc Slow blowing fuse
US3179773A (en) * 1962-09-24 1965-04-20 Sr Kedric V Keeley High speed current interrupting electric fuses
US3685682A (en) * 1970-11-02 1972-08-22 Gen Electric Hermetic sealing system
US3723930A (en) * 1972-02-10 1973-03-27 Gen Electric Oil immersible current limiting fuse assembly
US3946351A (en) * 1975-02-28 1976-03-23 Mcgraw-Edison Company Shielded fuse assembly
US3962668A (en) * 1975-04-22 1976-06-08 The Chase-Shawmut Company Electric low-voltage fuse
US5109849A (en) * 1983-08-30 1992-05-05 Nellcor, Inc. Perinatal pulse oximetry sensor
US5103203A (en) * 1991-03-15 1992-04-07 Combined Technologies Inc. Oil immersible current limiting fuse
US5235307A (en) * 1992-08-10 1993-08-10 Littelfuse, Inc. Solderless cartridge fuse
DE10123038A1 (de) * 2001-05-11 2002-11-14 Bosch Gmbh Robert Führungsring-Anordnung
US6774760B2 (en) * 2001-06-05 2004-08-10 Cooper Technologies Company Fuse element positioning body
JP4175844B2 (ja) * 2002-08-05 2008-11-05 大東通信機株式会社 ヒューズ

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US4158187A (en) * 1977-08-05 1979-06-12 Gould Inc. Means for affixing ferrules to a fuse casing
US4656453A (en) * 1982-12-09 1987-04-07 Littelfuse, Inc. Cartridge fuse with two arc-quenching end plugs
US4646053A (en) * 1985-12-30 1987-02-24 Gould Inc. Electric fuse having welded fusible elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101308744B (zh) * 2007-05-18 2010-05-19 爱迪生电气研发（上海）有限公司 熔断器及其装配方法

Also Published As

Publication number Publication date
US20050057337A1 (en) 2005-03-17
DE502004003663D1 (de) 2007-06-14
US7250843B2 (en) 2007-07-31
EP1511057B1 (fr) 2007-05-02
DE10339441B3 (de) 2005-06-23

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