EP0423578A2 - Boîtier pour fusible - Google Patents

Boîtier pour fusible Download PDF

Info

Publication number
EP0423578A2
EP0423578A2 EP90119230A EP90119230A EP0423578A2 EP 0423578 A2 EP0423578 A2 EP 0423578A2 EP 90119230 A EP90119230 A EP 90119230A EP 90119230 A EP90119230 A EP 90119230A EP 0423578 A2 EP0423578 A2 EP 0423578A2
Authority
EP
European Patent Office
Prior art keywords
insulating part
fuse
electrically conductive
base
screw thread
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
EP90119230A
Other languages
German (de)
English (en)
Other versions
EP0423578A3 (en
EP0423578B1 (fr
Inventor
Johannes A. Magendans
Kornelius Loppersum
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.)
ABB BV
Original Assignee
Bv Hollandse Apparatenfabriek Haf
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 Bv Hollandse Apparatenfabriek Haf filed Critical Bv Hollandse Apparatenfabriek Haf
Publication of EP0423578A2 publication Critical patent/EP0423578A2/fr
Publication of EP0423578A3 publication Critical patent/EP0423578A3/de
Application granted granted Critical
Publication of EP0423578B1 publication Critical patent/EP0423578B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • 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
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/62—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers the intermediate or auxiliary part being adapted for screwing into the base

Definitions

  • the invention relates to a fuse housing according to the preamble of claim 1.
  • Fuses which serve to protect electrical line networks, are generally accommodated in a housing which is formed from a head made of electrically insulating material and a metal sleeve which is partially surrounded by the head.
  • the fuse is brought into contact with a connecting element located in a base by screwing the head with the metal sleeve and the fuse located therein into the base.
  • the head is approximately pot-shaped and has a central through opening in its pot bottom, which is closed with a glass pane and a spring clip holding the glass pane.
  • the glass pane allows a view of the inside of the head towards the fuse plate on the front of the fuse so that you can see whether the fuse has melted or not.
  • the head has three parts.
  • the object of the invention is to provide fuse housings of the type mentioned at the outset, which are of simplified construction and can be assembled in a simplified manner.
  • the base of the pot can be designed like a lens or magnifying glass at least in a central region, as a result of which the securing plate is visible in an enlarged manner, so that the response of the securing device can be assessed more easily.
  • a wall thickness which is thinner than the remaining area of the insulating part can be provided in a central area. This also provides an optimal view of the safety plate. Because of a somewhat simplified tool, this version with the thinner wall thickness can be somewhat cheaper than the version with the lens-like or magnifying glass-like thickening.
  • the inside of the head is provided with latching means which engage with latching means on the sleeve for the firm connection of the sleeve and the pot.
  • Another attachment of the electrically conductive element to the bottom of the pot can be done in that at least one knob is formed on the inside of the bottom of the pot, which in an electrically adapted opening in the engages conductive element and is fixed therein by plastic deformation.
  • This definition of the electrically conductive element within the pot is easier insofar as the production of a latching is no longer necessary.
  • the knob or knobs could also be formed on the inner surface of the cylindrical part of the fuse housing instead of on the inside of the pot base.
  • a further embodiment of the invention in particular the fastening of the electrically conductive part within the insulating part, can mean that the electrically conductive element is held non-positively in the insulating part against the inner surface of the cylindrical wall of the insulating part by resilient tongues.
  • the electrically conductive part is simply inserted into the interior of the insulating part for the purpose of assembly and is then virtually clamped therein.
  • the electrically conductive part can be designed as a metal sleeve known per se, which is partially surrounded by the insulating part.
  • the insulating part with a screw thread on its outer surface, so that the insulating part itself can be inserted and screwed into the internal thread of the base.
  • the electrically conductive element will either be designed as a U-shaped, resilient strip conductor, the legs of which extend through a longitudinal slot in the insulating part in the region of the screw thread and outside the envelope cylinder surface formed by the core diameter of the screw thread are located; in the case of a sleeve, resilient tongues can be punched out and bent out on the cylindrical region of the sleeve, which in the same way as the legs of the resilient strip conductor pass through a longitudinal slot in the insulating part and are also located outside the envelope cylinder surface formed by the core diameter of the screw thread.
  • an electrically conductive connection to the external thread on the base is formed by means of the sections projecting beyond the core diameter.
  • a further advantageous embodiment of the invention can be that two diametrically opposed, on a plane passing through the central axis of the head are formed on the outer wall of the head. This makes it easier to turn the head.
  • the configuration according to the invention is therefore, compared to the prior art, much simpler due to the smaller number of individual parts and, moreover, also easier to use, and it is also easier to see whether the fuse has responded or not.
  • FIG. 2 There is shown a head 10, which has a cup-shaped or cup-shaped cross-section, with a bowl bottom 11 and a bowl wall 12. With the bowl wall 12, the head 10 partially comprises a metal sleeve 13, which in the area the inner surface of the cup base 11 also has a base 14, which contacts a connection contact piece 16 on a fusible link 17, shown in dashed lines and engaging inside the metal sleeve 13 and thus the head 10. In the bottom 14 of the metal sleeve 13, a central bore 15 is made, the inner diameter of which Diameter of the fuse plate corresponds to the fuse 17.
  • the metal sleeve 13 has at its end opposite the pot bottom 11 on its outer surface lugs 18 and 19, with which the metal sleeve 17 can engage like a bayonet lock in a recess, not shown, on a base in which the fuse 17 is to be inserted.
  • the central bore 15 also corresponds to the diameter of the depression, so that the depression 20 with the lens-like protrusion 21 and the central bore 15 are aligned with one another.
  • Two projections 22 and 23, which have an elongated shape, are formed on the inner surface of the cup base or pot base 11.
  • appropriately designed elongated holes 26 and 27 are introduced, which are arranged symmetrically to the central bore 15, so that the projections 22 and 23 pass through the elongated holes 26 and 27 in the assembled state.
  • the projections 22 and 23 are plastically deformed so that the metal sleeve is fixed in the interior of the head 12.
  • locking elements can also be provided, behind which corresponding locking elements on the metal sleeve 13 (not shown) engage for a positive connection between the head 10 and the metal sleeve 13.
  • the fuse housing consists of a pot-shaped insulating part 30 which has a pot base 31 which receives a metal sleeve 32.
  • the insulating part 30 completely encloses the metal sleeve 32. It has an external thread section 34 at its end region opposite the pot base 31, the thread turns of which are designed such that they can be inserted or screwed into an internal thread on a base for receiving a fuse.
  • the insulating part 30 each has a longitudinal slot 35 and 36, which longitudinal slots 35 and 36 are arranged diametrically opposite one another.
  • longitudinal slots 35 and 36 are arranged diametrically opposite one another.
  • the metal sleeve 32 is provided with a bottom 33 which has a central bore 34, the diameter of which corresponds to the diameter of the central bore 15 of FIG. 2.
  • the sleeve has outwardly bent contact fingers 37 and 38 which are bent back towards their free end, so that the contact fingers 37 and 38 form a kind of contact belly, the maximum diameter corresponds approximately to the outer diameter of the threaded section. In any case, the maximum diameter of the two contact fingers 37 and 38 must be significantly larger than the core diameter of the threaded section 34.
  • the insulating part 30 is the same as the head 10, the equality being emphasized with the same reference numbers for elements having the same effect.
  • the insulating part 30 consists in its entirety of clear, transparent material into which the metal sleeve is inserted in the same way as in the embodiment according to FIGS. 1 and 2.
  • the metal sleeve 13 is inserted in the same way as in the embodiment according to FIGS. 1 and 2.
  • FIG. 2 it would also be the possibility in the embodiment according to FIG. 2 to inject the metal sleeve 13 into the head 10, so that a spray connection is achieved between the two parts.
  • FIG. 5 shows a further embodiment of the invention.
  • the fuse housing is formed by a pot-like insulating part 50 with a pot base 51, in which two approximately L-shaped contact elements 52 and 53 arranged opposite one another are inserted.
  • FIG. 6 shows such a contact element 52. It has a first leg 54, which has a bore 55, and a second leg 56, which is bent slightly outwards approximately in its center at a kink line 57, that is to say counter to the direction of the leg 54 . At the free end there is a nose 58 which projects radially outwards.
  • This contact piece or contact element is inserted into the interior of the insulating part 50 in such a way that the bore 55 receives a pin 59 formed on the bottom 51 of the insulating part 50.
  • the electrically conductive contact piece 52 is fastened to the insulating part 50 by plastic deformation of this pin, which passes through the bore 55.
  • the insulating part 50 has at its end opposite the bottom diametrically opposite slots 60 and 61, the circumferential dimensions of which correspond to the width of the leg 56, so that the area between the kink 57 and the free end of the leg 56 fits through this slot, so that the nose 58 projects beyond the outer surface of the cylindrical section 62 of the insulating part 50, so that there two opposing lugs are formed which can be inserted like a bayonet lock into a corresponding receiving space on a base for receiving the securing element.
  • the leg 56 is guided in the circumferential direction by side edges of the slots 60 and 61.
  • a circular depression is formed in the outer surface of the bottom 51 of the insulating body 50, so that an area 64 with a relatively thin wall thickness is formed, the diameter of which corresponds to the diameter of the securing plate, so that the securing plate is visible from the outside.
  • the nose 59 and the bore 55 must of course be dimensioned such that the electrically conductive contact piece 16 of the fuse 17 always abuts the legs 54. Accordingly, the bore 55 and thus also the nose or the projection 59 must be arranged relatively far outward, as seen from the center line.
  • the leg 56 is adapted to the inner surface of the cylindrical wall region 62 of the insulating part 50, so that it is convexly curved outwards. But this does not have to be the case; if the two contact pieces 52 and 53 are narrower, then the legs 56 can also be flat in themselves.
  • the head 11 and the insulating parts 30 and 50 On the outer surface - diametrically opposite one another - the head 11 and the insulating parts 30 and 50 have two ears 24 and 25 lying in one plane, which protrude beyond the pot bases 11, 31 and 51 in the axial direction, in the axial direction essentially over the whole Length of the wall 12 of the head 10 and the insulating parts 30 and 50 extend and protrude radially, so that two handles are formed with which the head 10 and the insulating parts 30 and 50 and thus the metal sleeve 13 and the sleeve 32 and the contact pieces 52 and 53 can be rotated.
  • the side surfaces of the ears 25 and 26 are provided with a corrugation 26 running in the axial direction in order to achieve better handling.
  • the material of the head 10 and the insulating parts 30 and 50 is electrically insulating material which is clearly transparent, so that openings which have to be closed with a glass pane are no longer required.
  • the head 10 and the insulating parts 30 and 50 essentially from plastic which is not clearly transparent and the base 11, 31 and 51 from clear plastic. The technical possibility for this exists, as required.

Landscapes

  • Fuses (AREA)
  • Cookers (AREA)
EP19900119230 1989-10-12 1990-10-06 Boîtier pour fusible Expired - Lifetime EP0423578B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19893934048 DE3934048C2 (de) 1989-10-12 1989-10-12 Sicherungsgehäuse
DE3934048 1989-10-12
DE3940754 1989-12-09
DE19893940754 DE3940754C2 (de) 1989-10-12 1989-12-09 Sicherungsgehäuse

Publications (3)

Publication Number Publication Date
EP0423578A2 true EP0423578A2 (fr) 1991-04-24
EP0423578A3 EP0423578A3 (en) 1992-04-22
EP0423578B1 EP0423578B1 (fr) 1995-08-30

Family

ID=25886031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900119230 Expired - Lifetime EP0423578B1 (fr) 1989-10-12 1990-10-06 Boîtier pour fusible

Country Status (3)

Country Link
EP (1) EP0423578B1 (fr)
DE (3) DE3934048C2 (fr)
DK (1) DK0423578T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1464544B1 (fr) 2003-04-03 2010-09-15 Delphi Technologies, Inc. Boîtier avec une barre conductrice pour un dispositif de sectionnement
DE102004011863A1 (de) * 2003-04-03 2004-10-14 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Gehäuse mit Stromleiterschiene für ein Trennsystem

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386060A (en) * 1942-10-29 1945-10-02 Gen Electric Fuse unit
DE1987221U (de) * 1968-06-12 Robert Schmidt K.G., 5956 Grevenbrück Schraubkappe zur lösbaren Halterung eines Schmelzeinsatzes im Sockel einer elektrischen Sicherung
DE1299757B (de) * 1965-07-15 1969-07-24 Siemens Ag Schraubkappe fuer D-Sicherungssockel
DE1588940A1 (de) * 1967-03-29 1970-05-21 Wickmann Werke Ag Sicherungshalter
DE1563585A1 (de) * 1966-12-20 1970-05-27 Aloys Mennekes Fa Schraubkappe fuer Sicherungselemente
DE2033529A1 (de) * 1970-07-07 1972-01-20 Gruener E Schraubkappe S
DE2648670A1 (de) * 1976-10-27 1978-05-03 Geyer Gmbh & Co Christian Sicherungs-lastschalter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE700927C (de) * 1938-12-24 1941-01-04 Siemens Schuckertwerke Akt Ges Verfahren zur Herstellung eines aus einem durchsic B. Glas, bestehenden Stoepselkopfes
AT163794B (de) * 1948-05-14 1949-08-10 Wolfgang Pluskal Stöpselkopf für Patronensicherungen
DE958405C (de) * 1954-01-16 1957-02-21 Standard Elek K Ag Sicherungshalter fuer Kennmeldersicherungen
DE1000914B (de) * 1954-03-11 1957-01-17 Efen Elektrotech Fab Einbau- oder Aufbausicherungselement
DE8303747U1 (de) * 1983-02-10 1984-04-26 Siemens AG, 1000 Berlin und 8000 München Schraubkappe für elektrische Schraubsicherungen
SU1621099A1 (ru) * 1988-10-31 1991-01-15 Всесоюзный научно-исследовательский, проектно-конструкторский и технологический институт низковольтного аппаратостроения Плавкий предохранитель

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1987221U (de) * 1968-06-12 Robert Schmidt K.G., 5956 Grevenbrück Schraubkappe zur lösbaren Halterung eines Schmelzeinsatzes im Sockel einer elektrischen Sicherung
US2386060A (en) * 1942-10-29 1945-10-02 Gen Electric Fuse unit
DE1299757B (de) * 1965-07-15 1969-07-24 Siemens Ag Schraubkappe fuer D-Sicherungssockel
DE1563585A1 (de) * 1966-12-20 1970-05-27 Aloys Mennekes Fa Schraubkappe fuer Sicherungselemente
DE1588940A1 (de) * 1967-03-29 1970-05-21 Wickmann Werke Ag Sicherungshalter
DE2033529A1 (de) * 1970-07-07 1972-01-20 Gruener E Schraubkappe S
DE2648670A1 (de) * 1976-10-27 1978-05-03 Geyer Gmbh & Co Christian Sicherungs-lastschalter

Also Published As

Publication number Publication date
DE3934048C2 (de) 1995-07-13
DE3934048A1 (de) 1991-04-25
DE3940754C2 (de) 1995-04-13
EP0423578A3 (en) 1992-04-22
DE59009575D1 (de) 1995-10-05
DE3940754A1 (de) 1991-06-27
DK0423578T3 (da) 1995-12-18
EP0423578B1 (fr) 1995-08-30

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