EP0339846A2 - Boîte à fusibles - Google Patents

Boîte à fusibles Download PDF

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Publication number
EP0339846A2
EP0339846A2 EP89303763A EP89303763A EP0339846A2 EP 0339846 A2 EP0339846 A2 EP 0339846A2 EP 89303763 A EP89303763 A EP 89303763A EP 89303763 A EP89303763 A EP 89303763A EP 0339846 A2 EP0339846 A2 EP 0339846A2
Authority
EP
European Patent Office
Prior art keywords
clip
fuse
unit
passages
row
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
EP89303763A
Other languages
German (de)
English (en)
Other versions
EP0339846A3 (fr
Inventor
Melvyn Adams
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of EP0339846A2 publication Critical patent/EP0339846A2/fr
Publication of EP0339846A3 publication Critical patent/EP0339846A3/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
    • H01H85/203—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals
    • H01H85/2035—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals for miniature fuses with parallel side 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
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H2085/2075—Junction box, having holders integrated with several other holders in a particular wiring layout
    • H01H2085/208—Junction box, having holders integrated with several other holders in a particular wiring layout specially adapted for vehicles
    • 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

  • This invention relates to a fuse box for use primarily, but not exclusively, in a vehicle electrical system.
  • a fuse box including a fuse clip unit wherein a busbar is integral with, and electrically interconnects, a plurality of spaced parallel fuse clips.
  • the fuse clip unit is formed from brass sheet by stamping and folding such that the busbar, the fuse clips, and means for gripping and making electrical connection to one or more electrical connecting leads, are integral with one another.
  • the fuse clip unit disclosed in British Patent No. 2123626 is suitable for many applications, but presents problems where a close positioning of adjacent parallel fuse clips is required. It will be recognised that since the clips are integrally formed by stamping and folding sheet material, then the developed width (the unfolded width) of each clip determines the minimum spacing between clips along the length of the busbar with which the clips are integral. For example, where the developed width of each clip is 15mm and the clips, in their developed form, are symmetrical about centre lines extending at right angles to the length of the integral busbar, then the minimum spacing of clips (measured from centre line to centre line) is 15mm.
  • a fuse box comprising a housing defining a row of equally spaced, parallel, fuse clip receiving passages, and, a pair of fuse clip units the fuse clips of which are received within respective passages of said row, each of said fuse clip units comprising a busbar and a plurality of integral, spaced fuse clips, the spacing between adjacent fuse clips of each fuse clip unit being double the spacing between adjacent passages of the row, and, said fuse clip units being staggered longitudinally relative to one another by a distance equal to the spacing between adjacent passages such that the first fuse clip of the first unit is engaged in the first passage of said row, the second clip of the first unit is engaged in the third passage of the row, the first clip of the other unit is engaged in the second passage of the row, the second clip of the other unit is engaged in the fourth passage of the row, and so on.
  • each fuse clip of a unit protrudes to one side of the plane of the busbar of the unit and said first and second units are arranged with their one sides, mutually presented.
  • the fuse box includes an electrically insulating member retained within the box in a position preventing withdrawal of said clips from said passages and extending between the busbars of the first and second units to maintain a spacing therebetween.
  • first and second units are arranged with their one sides facing in the same direction and their busbars in contact.
  • At least two of said passages incorporate clip retaining means whereby the respective clip and thereby the other clips integral therewith are retained in position, one of said at least two passages receiving a clip of the first unit and the other of said at least two passages receiving a clip of the other unit.
  • the fuse box comprises a moulded synthetic resin body 11 incorporating a plurality of parallel passages 12, 13.
  • the passages 12, 13 are arranged in two adjacent, parallel rows 12a, 13a, the passages extending at right angles to their respective row and each passage 12 of the row 12a being aligned in a direction transverse to the row with a corresponding passage 13 of the row 13a.
  • An elongate, shallow, channel 14 is defined in one face of the body 11 and each of the passages 12, 13 opens, at one end, into the base of the channel 14.
  • the width and length of the channel 14 is such as to accommodate the rows 12a, 13a and the side walls of the channel 14 include integral, laterally extending, mutually presented projections 15 which divide the channel into fuse receiving sections. Each section contains the end of a passage 12, and the end of the corresponding passage 13.
  • the recess 16 will receive one or more printed circuit boards, and the channel 14 will be closed by a detachable cover.
  • a fuse clip 19 of the kind illustrated in Figure 7 will be received in each of the passages 12, 13 such that a fuse receiving portion of the clip will lie immediately beneath the channel 14.
  • the fuse clips 19 are manufactured as parts of a respective fuse clip unit 18, each unit 18 including a busbar 20 with which the clips 19 of the unit are integral.
  • Each fuse clip unit 18 is formed by stamping and bending operations performed on an elongate strip of plain or tinned brass.
  • Each clip 19 has two distinct, but integral portions, a fuse receiving portion 21 and a lead connection portion 22.
  • Each clip is integral with its respective busbar 20 at the end of the portion 22 remote from the portion 21.
  • Each portion 22 is of U-shaped cross-section and includes two pairs of deformable tags 23, 24 crimpable respectively to engage a bared length of the core, and the insulating sheath, of an electrically conductive lead.
  • each fuse clip 19 comprises a pair of elongate, transversely spaced, resilient arms 25 extending outwardly in the direction of the length of the clip. Part-way along their length the arms 25 are bent back upon themselves so that the end regions of the arms 25 lie close together, or even in facial contact, and extend back towards the portion 22 of the clip between their respective root portions. It will be recognised therefore that the closely adjacent portions 25a of the arms 25 define a pair of substantially planar regions urged, by the inherent resilience of the arms 25, towards facial contact with one another. A flat blade-like terminal of a planar fuse introduced between the portions 25a will be gripped thereby, and there will be established a good electrical connection over a large surface area.
  • the clips 19 engaged in the passages 12 have been detached from their respective busbar 20, and thus are electrically isolated from one another. In practice these clips will be carried by a printed circuit board, and will be electrically connected to respective conductors of the printed circuit board. However, the clips 19 engaged in the passages 13 are intended all to be electrically connected to a power supply terminal, and thus can be electrically interconnected. It is convenient therefore to leave these clips 19 attached to their respective busbars 18. However, as is apparent from Figures 5 and 6 the spacing between adjacent passages 13 is less than the minimum spacing which can be achieved between adjacent clips 19 of the same clip unit 18.
  • each clip 19 is upstanding to one side of the plane of its respective busbar 20. It can be seen in Figure 5 that the units 18a and 18b are oppositely orientated in that the unit 18a is introduced to its respective passages 13 with the busbar thereof adjacent the passages 12 whereas the unit 18b is introduced into its passages 13 with the respective busbar remote from the passages 12.
  • Such opposite orientation of the units 18 a , 18 b results in there being no physical contact between the units and thus where the clips of the units 18 a and 18 b are to be electrically connected to the power supply terminal (for example a terminal of the vehicle battery) then individual connections to each unit are needed. It will be recognised therefore that if desired there could be different connections to the two units 18 a , 18 b .
  • the unit 18 a might be directly connected to the power supply terminal while the unit 18 b is connected to the power supply terminal through a switch (for example the vehicle ignition switch).
  • a switch for example the vehicle ignition switch
  • alternate fuse clips in the row would be permanently connected to the power supply terminal and the others would be switched by ignition switch.
  • an internal moulded synthetic resin cover member is provided which firs within recess 16 and has an integral elongate rib overlying the ends of the passage 13. The rib prevents withdrawal of the clips from the passages 13 and its thickness is such that it extends between the busbars of the units 18 a and 18 b to hold them in spaced relationship.
  • each unit 18 Since the clips 19 of each unit 18 are interconnected by the respective busbar 20 only a single electrical connecting lead 26 is required for each unit 18. Thus a connecting lead 26 will have an end region of its core bared and the lead will be physically and electrically secured to one of the clips 19 of the unit 18 by crimping the tags 23 around the bared core and the tags 24 around the sheath of the lead. However, since each clip 19 of each unit 18 has crimpable tags 23, 24 leads can be connected to other clips of a unit if desired. For example, it may be desired to make electrical connection to a unit 18 by way of two or more leads to provide a required electrical current capacity.
  • the fuse receiving portions lie immediately beneath the channel 14.
  • a clip 19 of one of the two units 18 will be positioned in a passage 13 and an equivalent clip secured to a conductive track of the printed circuit board will be positioned in the adjacent passage 12.
  • a planar fuse having co-planar, spaced, blade terminals will be introduced into the channel 14 such that the blade terminals extend downwardly into the passages 12 and 13 respectively and thus the blade terminals of the fuse will be electrically connected through the clip of the passage 13 to the lead 26, and through the clip of the passage 12 to the appropriate conductor of the printed circuit board.
  • FIGS 1 and 2 show that only two of the passages 12 are provided with latches 27 and this is because, as mentioned previously, the clips engaged in the passages 12 are all carried by a common printed circuit board. Thus once the printed circuit board is secured to the body 11 the respective clips will be held in position in the passages 12 by the printed circuit board.
  • the latches 27 of the passages 12 serve simply to hold the assembly of clips 19 and printed circuit board in position prior to securing the printed circuit board to the body.
  • passages 13 incorporate latches 27, two of the four passages 13 having their latches positioned to co-operate with the unit 18a and the other two having their latches positioned to co-operate with the unit 18b (based upon the assumption that the units 18a and 18b will be oppositely orientated as illustrated in Figure 5, it being understood that all four latches 27 of the passages 13 would be similarly orientated when the units 18 a , 18 b are to be positioned with their busbars in facial contact).
  • Each latch 27, irrespective of its orientation, is defined by an elongate flexible finger integral with the wall of its respective passage, and having a barbed lateral projection 28 at its free end.
  • a clip 19 is defined by introduction of a clip 19 into the respective passage, and having a barbed lateral projection 28 at its free end.
  • the clip with the barbed projection 28 deflects the finger laterally until the projection 28 can snap into an aperture 29 provided in each clip 19 thereby locking the respective clip 19 in the respective passage.
  • locking of one clip 19 of a unit 18 in its respective passage is sufficient to lock all of the other clips in their passages but it is desirable to provide two latches 27 for each unit 18 to improve security.
  • units 18a and 18b are not to be oppositely orientated then the latches 27 of the passages 13 will be identically orientated.

Landscapes

  • Fuses (AREA)
EP19890303763 1988-04-23 1989-04-17 Boíte à fusibles Ceased EP0339846A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8809663 1988-04-23
GB888809663A GB8809663D0 (en) 1988-04-23 1988-04-23 Fuse box

Publications (2)

Publication Number Publication Date
EP0339846A2 true EP0339846A2 (fr) 1989-11-02
EP0339846A3 EP0339846A3 (fr) 1990-09-26

Family

ID=10635750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890303763 Ceased EP0339846A3 (fr) 1988-04-23 1989-04-17 Boíte à fusibles

Country Status (2)

Country Link
EP (1) EP0339846A3 (fr)
GB (1) GB8809663D0 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607902A2 (fr) * 1993-01-21 1994-07-27 Sumitomo Wiring Systems, Ltd. Bornes électriques reliées l'une à l'autre
US5476395A (en) * 1993-03-01 1995-12-19 Methode Electronics, Inc. Planar fuse panel
DE19512465A1 (de) * 1995-04-03 1996-10-10 Grote & Hartmann Elektrische Steckkontaktierungseinrichtung einer Flachsicherung
DE19638972A1 (de) * 1996-09-23 1998-04-02 Siemens Ag Sicherungsleiste
DE102004011490A1 (de) * 2004-03-09 2005-09-29 Lisa Dräxlmaier GmbH Sicherungsträger für Flachsicherungen
DE102004053578B4 (de) * 2004-11-05 2008-09-18 Lisa Dräxlmaier GmbH Sicherungsträger für Flachsicherungen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191245A1 (fr) * 1972-06-28 1974-02-01 Essex International Inc
GB2123626A (en) * 1982-07-06 1984-02-01 Lucas Ind Plc Fuse box assembly
EP0162694A2 (fr) * 1984-05-25 1985-11-27 LUCAS INDUSTRIES public limited company Boîte à fusibles
EP0219935A2 (fr) * 1985-08-12 1987-04-29 E.I. Du Pont De Nemours And Company Assemblage de pièces d'extrémité convenant à des pièces de contact pour connecteurs électriques à contact multiple

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191245A1 (fr) * 1972-06-28 1974-02-01 Essex International Inc
GB2123626A (en) * 1982-07-06 1984-02-01 Lucas Ind Plc Fuse box assembly
EP0162694A2 (fr) * 1984-05-25 1985-11-27 LUCAS INDUSTRIES public limited company Boîte à fusibles
EP0219935A2 (fr) * 1985-08-12 1987-04-29 E.I. Du Pont De Nemours And Company Assemblage de pièces d'extrémité convenant à des pièces de contact pour connecteurs électriques à contact multiple

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607902A2 (fr) * 1993-01-21 1994-07-27 Sumitomo Wiring Systems, Ltd. Bornes électriques reliées l'une à l'autre
EP0607902A3 (en) * 1993-01-21 1995-11-15 Sumitomo Wiring Systems Linked electrical connectors.
US5476395A (en) * 1993-03-01 1995-12-19 Methode Electronics, Inc. Planar fuse panel
DE19512465A1 (de) * 1995-04-03 1996-10-10 Grote & Hartmann Elektrische Steckkontaktierungseinrichtung einer Flachsicherung
DE19638972A1 (de) * 1996-09-23 1998-04-02 Siemens Ag Sicherungsleiste
DE19638972B4 (de) * 1996-09-23 2004-10-28 Tyco Electronics Logistics Ag Sicherungsleiste
DE102004011490A1 (de) * 2004-03-09 2005-09-29 Lisa Dräxlmaier GmbH Sicherungsträger für Flachsicherungen
DE102004053578B4 (de) * 2004-11-05 2008-09-18 Lisa Dräxlmaier GmbH Sicherungsträger für Flachsicherungen

Also Published As

Publication number Publication date
EP0339846A3 (fr) 1990-09-26
GB8809663D0 (en) 1988-05-25

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