EP0198489A2 - Porte-fusible - Google Patents

Porte-fusible Download PDF

Info

Publication number
EP0198489A2
EP0198489A2 EP86105264A EP86105264A EP0198489A2 EP 0198489 A2 EP0198489 A2 EP 0198489A2 EP 86105264 A EP86105264 A EP 86105264A EP 86105264 A EP86105264 A EP 86105264A EP 0198489 A2 EP0198489 A2 EP 0198489A2
Authority
EP
European Patent Office
Prior art keywords
fuse holder
mounting
recess
socket part
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.)
Ceased
Application number
EP86105264A
Other languages
German (de)
English (en)
Other versions
EP0198489A3 (fr
Inventor
Henning Nielsen
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.)
Laur Knudsen Nordisk Elektricitets Selskab AS
Original Assignee
Laur Knudsen Nordisk Elektricitets Selskab AS
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 Laur Knudsen Nordisk Elektricitets Selskab AS filed Critical Laur Knudsen Nordisk Elektricitets Selskab AS
Publication of EP0198489A2 publication Critical patent/EP0198489A2/fr
Publication of EP0198489A3 publication Critical patent/EP0198489A3/fr
Ceased 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
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/2045—Mounting means or insulating parts of the base, e.g. covers, casings
    • 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
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/205—Electric connections to contacts on the base

Definitions

  • the invention relates to a fuse holder for use in switchboards and conductor rail systems in power installations, said holder comprising a socket part having mounting means for mounting terminal parts and contact parts.
  • a fuse holder of this type is wellknown to an expert and is used in numerous connections. It can by way of example be mentioned that it is used as section divider between rail systems or as safeguards in connection with crash fences.
  • a fuse holder of the above type is characterised in that the socket part in each end is provided with a vertically through-going recess extending in the transverse direction of the socket part and with a screw- or bolt hole extending in the longitudinal direction of the socket part and formed in an end wall, said screw- or bolt hole ending in said recess for collective mounting of the contact parts and the terminal parts in each socket end.
  • the supply parts and the discharge parts may e.g. be formed as flexible, laminar terminal parts. With this liberty of choise between mounting of the terminal parts from the top and from the bottom a fuse holder is provided which is easy to mount, no matter where there is a need for mounting a fuse.
  • An embodiment of a fuse holder according to the invention is characterised in that the part of the recess ending on the rear side of the socket part is provided with a transverse partition for defining a clearance for a nut part for a mounting screw inserted from the outside through said screw-or bolt hole, said nut part forming part of the mounting means.
  • the fuse holder according to the invention may be characterised in that each of its outer end walls on the inner side of the recess is provided with a chute-like recess for guiding a washer in such a manner that this washer during the mounting of the fuse holder by insertion from the rear side of the holder may slide into correct position for passage of the mounting screw. This measure facilitates the assembling of the fuse holder considerably, and time is consequently saved.
  • one leg may as stated in claim 4 advantageously be provided with a U-shaped recess for forming two smaller legs each being provided on the inner side with a wartlike projection.
  • This bifurcation enables a quick insertion of a terminal part either at the first mounting or later, if it is desired to switch to another nominal current intensity. It is sufficient to loosen the mounting screw to remove the terminal part and thereafter retighten it when the new part has been inserted.
  • the wartlike projections cooperate with the washer when the screw is tightened and prevent the terminal part in question from being pulled out unintentionally.
  • a fuse holder according to the invention may also as stated in claim 7 further comprise at least one cap for mounting above a contact part, said cap essentially being closed on five sides, the vertical side of the cap facing the center of the socket part being provided with a vertical slot, and the top side being provided with a corresponding slot flushing with the first slot for receiving one terminal of a fuse.
  • a fuse holder according to the invention may further as stated in claim 8 be characterised in that the cap is made of a thermoplastic polyester material, preferably Arnite® , that the edges of the vertical slot on the outer side of the cap is provided with outwardly projecting beads, and that the slot on the top side of the cap"is dimensioned tightly fitting relative to the thickness of the terminals of the fuse. It is hereby obtained that contact cannot be established by means of a DIN-standardized test digit (finger) to a contact part covered by such a cap.
  • the socket part constituting the basic component of the fuse holder is provided with the general reference numeral 10. It consists in principle of a rectangular, oblong block, which in each end is provided with an elevation 11 on its upper side serving as abutment and support for mounted terminal parts and contact parts.
  • a part sectional view of the right end of the socket part 10 is illustrated, whereas the left end is illustrated with a DIN-standardized contact part 13 and a DIN-standardized terminal part 15 mounted thereon.
  • the contact part 13 comprises a spring-loaded bifurcated section 17 and a base 19.
  • the bifurcated section 17 is used for gripping the terminal legs of a fuse and for establishing by means thereof a good power transferring connection with as small a contact resistance as possible.
  • a fuse of this type is provided with the general reference numeral 20 in the drawing.
  • the fuse comprises a body 21 and a terminal leg 23 projecting from each end.
  • Each terminal part 15 consists of an oblong L-shaped piece of copper having a bolt hole 25 in the free end and a U-shaped recess 27 in the bent end thus ending in two legs 29 and 31.
  • Figure 1 of the drawing illustrates three different sizes of terminal parts provided with the reference numerals 15a, 15b, and 15c, respectively. These three terminal parts illustrate the adjustability to different DIN-standards, for example depending on the current the fuse concerned should sustain in the case in question.
  • a through-going recess 33 is illustrated extending in vertical direction in relation to the orientation of the fuse holder shown in Figure 1.
  • the recess 33 is at the upper side of the socket part dimensioned to receive the base 19 of a contact part and the L-shaped part of a terminal part comprising the legs 29 and 31.
  • the recess 33 widens out, the outer end wall 35 on its inner side being bevelled towards the outside, whereas the inner wall 37 is provided with a ledge 39 serving as stopper for a nut part 41.
  • the nut part which together with a threaded hole 42 cooperate with a mounting screw 43 is fitted into a special clearance 44 on the bottom side of the socket part, the recess 33 here being provided with a transverse partition 45 serving as abutment for the nut part 41.
  • the mounting screw 43 is inserted into the recess 33 through an axial hole 47 in the outer end wall and a second hole 49 in alignment therewith in the partition 45.
  • the outer end wall 35 of the socket part is on the inner side provided with a vertically oriented guide 51 for a washer 53.
  • the washer 53 falls down the guide 51 into load positon opposite the hole 47 in the end wall 35, whereafter the mounting screw 43 is inserted through the hole 47 and loaded with the washer 53.
  • the nut part 41 is allowed to fall into its clearance 44, so that it rests against the ledge 39.
  • the threaded hole 42 of the nut part is in alignment with the hole 49 in the partition 45 and the hole 47 in the outer end wall 35. It is hereafter easy to insert the base 19 of the contact part 13 into the recess 33 and grip it with the mounting screw 43, which is then pushed further through the transverse partition 45 for engagement in the threaded hole 42 of the nut part 41.
  • the fuse holder 10 now offers the user two possibilities of connection to a power installation. This may either be done in the known manner by means of terminal parts 15, which are mounted from the top, or by means of mounting parts 60, which are mounted from the bottom or from the rear side.
  • the mounting from the top as illustrated in Figure 1 by means of the terminal parts 15 is known per se.
  • the bent end of the terminal parts are, however, provided with a hole, whereas the terminal parts according to the invention are provided with an open recess or slot in such a manner that two legs are formed, which can be conducted downwards on each side of the mounting screw.
  • the terminal parts are easy to dismount and mount by a slight loosening of the screw and a subsequent tightening of the screw.
  • the described method of mounting requires very few components and ensures simultaneously that the fuse holder is easy to assemble and disassemble or reassemble, and that the individual components are not slackened after innumerable replacements of the fuse 20.
  • the mounting of the terminal parts from the bottom or from the rear side is novel and involves additional advantages of the fuse holder according to the invention, cf. the introduction to the specification.
  • the said mounting parts 60 may be formed as flexible laminated rails 65 with a surrounding insulation 67 of crimped plastic material, and offers the switchboard constructor the possibility of adjusting these laminar connections to the purposes in question,as it is not difficult to punch a hole 69 in an available material of the above kind.
  • This flexible method of mounting also involves savings in material, the number of lamellae used being adjusted to the maximum current intensity they are to sustain.
  • the fuse holder according to the invention comprises at least one cap, preferably for mounting above a live contact part 13.
  • a cap is illustrated in Figure 1 and is provided with the general reference numeral 70.
  • the cap is essentially box-shaped with four substantially vertical sides 71, 73, 75, and 77, and a horizontal top side 79, and is open at the bottom.
  • the illustrated cap 70 comprises a slot 81 in the top side 79 and a slot 83 in the vertical side 71 facing the center of the fuse holder for receiving one of the terminal legs 23 of the fuse 20.
  • the cap is furthermore provided with a gully-shaped extension 85 of the rear wall 77 to compensate for different sizes of fuses.
  • the slot 81 in the top side 79 is made slightly more narrow than the thickness of the terminal leg 23, so that the edges of the slot 81 have to be forced slightly to i the side when the fuse is mounted.
  • the edges of the vertical slot 83 are furthermore provided with a bead 87 projecting towards the center of the fuse holder.
  • the cap 70 is provided with a downwardly projecting extension or flap 91 of the rear wall 77.
  • This flap 91 is used for covering the mounting hole 47 in the end wall in case the power supply is effected from the rear side of the fuse holder through the laminated rails 60. In case the power supply is effected through the usual terminal parts 15, the flap can easily be removed, as the rear wall is provided with a weakening line 93.

Landscapes

  • Fuses (AREA)
EP86105264A 1985-04-17 1986-04-16 Porte-fusible Ceased EP0198489A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK174485A DK156792C (da) 1985-04-17 1985-04-17 Sikringsholder
DK1744/85 1985-04-17

Publications (2)

Publication Number Publication Date
EP0198489A2 true EP0198489A2 (fr) 1986-10-22
EP0198489A3 EP0198489A3 (fr) 1988-06-15

Family

ID=8107717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105264A Ceased EP0198489A3 (fr) 1985-04-17 1986-04-16 Porte-fusible

Country Status (8)

Country Link
EP (1) EP0198489A3 (fr)
AU (1) AU588586B2 (fr)
DK (1) DK156792C (fr)
ES (1) ES296970Y (fr)
FI (1) FI82998C (fr)
GR (1) GR861001B (fr)
NO (1) NO168395C (fr)
PT (1) PT82411B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613159A2 (fr) * 1993-02-25 1994-08-31 PETERREINS SCHALTTECHNIK GmbH Dispositif de commutation pour le montage et la commutation d'interrupteurs en charge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231328B (de) * 1964-12-24 1966-12-29 Geyer Fa Christian Anschlussklemme, insbesondere Bockanschluss-klemme, fuer Schienen
DE1588168A1 (de) * 1967-08-22 1971-01-21 Elek Gmbh Griffsicherungsunterteil
FR2158674A5 (fr) * 1971-10-28 1973-06-15 Alpes Fses Manufacture
DE2755062A1 (de) * 1976-12-08 1978-06-15 Square D Co Aufschraubbares flexibles anschlusselement fuer ausschalter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144554A (en) * 1976-12-08 1979-03-13 Square D Company Circuit breaker bolt-on flexible connector
GB1557927A (en) * 1977-02-22 1979-12-19 Ass Elect Ind Fuse units

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1231328B (de) * 1964-12-24 1966-12-29 Geyer Fa Christian Anschlussklemme, insbesondere Bockanschluss-klemme, fuer Schienen
DE1588168A1 (de) * 1967-08-22 1971-01-21 Elek Gmbh Griffsicherungsunterteil
FR2158674A5 (fr) * 1971-10-28 1973-06-15 Alpes Fses Manufacture
DE2755062A1 (de) * 1976-12-08 1978-06-15 Square D Co Aufschraubbares flexibles anschlusselement fuer ausschalter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613159A2 (fr) * 1993-02-25 1994-08-31 PETERREINS SCHALTTECHNIK GmbH Dispositif de commutation pour le montage et la commutation d'interrupteurs en charge
EP0613159A3 (fr) * 1993-02-25 1995-02-01 Peterreins Schalttechnik Gmbh Dispositif de commutation pour le montage et la commutation de commutateurs en charge.

Also Published As

Publication number Publication date
FI82998C (fi) 1991-05-10
DK174485A (da) 1986-10-18
NO168395B (no) 1991-11-04
FI861569A0 (fi) 1986-04-14
PT82411B (pt) 1992-07-31
AU5634486A (en) 1986-10-23
ES296970Y (es) 1989-02-01
NO861472L (no) 1986-10-20
FI82998B (fi) 1991-01-31
FI861569A (fi) 1986-10-18
DK156792B (da) 1989-10-02
DK174485D0 (da) 1985-04-17
DK156792C (da) 1990-02-19
NO168395C (no) 1992-02-12
EP0198489A3 (fr) 1988-06-15
ES296970U (es) 1988-06-01
GR861001B (en) 1986-08-12
PT82411A (en) 1986-05-01
AU588586B2 (en) 1989-09-21

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Inventor name: NIELSEN, HENNING