EP0000164A1 - Fusible plat - Google Patents

Fusible plat Download PDF

Info

Publication number
EP0000164A1
EP0000164A1 EP78100187A EP78100187A EP0000164A1 EP 0000164 A1 EP0000164 A1 EP 0000164A1 EP 78100187 A EP78100187 A EP 78100187A EP 78100187 A EP78100187 A EP 78100187A EP 0000164 A1 EP0000164 A1 EP 0000164A1
Authority
EP
European Patent Office
Prior art keywords
flat
fuse according
flat fuse
frame
legs
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.)
Withdrawn
Application number
EP78100187A
Other languages
German (de)
English (en)
Inventor
Alfred Könnemann
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.)
Grote and Hartmann GmbH and Co KG
Original Assignee
Grote and Hartmann GmbH and Co KG
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 Grote and Hartmann GmbH and Co KG filed Critical Grote and Hartmann GmbH and Co KG
Publication of EP0000164A1 publication Critical patent/EP0000164A1/fr
Withdrawn legal-status Critical Current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
    • H01H85/26—Magazine arrangements
    • 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
    • H01H85/0417—Miniature fuses cartridge type with parallel side contacts

Definitions

  • the invention relates to an electrical flat fuse, in particular for automotive electrical systems.
  • the new flat fuse is of course also for other electrical systems, such as. B. in the electrical system of washing machines, televisions, radios, etc., in which it is important to accommodate a lot of electrical units in a small space.
  • Comparable fuses are designed as printed circuits. They are very expensive due to the manufacturing process and the need to use expensive raw materials.
  • pin-like ceramic or plastic bodies are often used, in particular in automotive electronics, to which a narrow sheet metal strip is attached as a fuse element is. This type of backup can only serve as a simple backup, requires a considerable amount of space and is relatively difficult.
  • a further known plug-in fuse consists of an H-shaped sheet metal blank, the horizontal connecting leg of which is designed as a fusible link in that it has a tapered cross-sectional area compared to the vertical links.
  • the horizontal connecting leg is milled out in regions and additionally embossed.
  • Such processing of the sheet metal blank is lengthy, labor-intensive and considerably increases the cost of the plug-in fuse.
  • the sheet metal blank is received in a plastic housing in such a way that only a free end region of the vertical webs protrudes from the housing. These web ends protruding from the housing form clamps which can be inserted into spring clamps which are held on fuse panels.
  • the sheet metal blank is connected to the housing by means of a plug-in assembly, openings for locking in the sheet metal blank and corresponding locking projections being provided in the housing.
  • the locking projections make the manufacture of the housing, in particular with regard to the demolding, more difficult.
  • a special disadvantage of the known plug fuse is that it be a very large measured overall length and is therefore space-consuming and also requires a lot of plastic material.
  • the object of the invention is to provide a flat fuse that is light, requires very little space, can be implemented as a multiple fuse and in particular requires little effort in terms of raw materials and manufacture.
  • a flat fuse which is distinguished by a plastic frame with at least one securing element which consists of a fusible link and two contacting flat hollow bodies (5) which are held in a form-fitting manner in frame legs.
  • the securing element is preferably U-shaped, the side legs being designed as flat hollow plugs with contact surfaces and the apex legs being designed as a fusible link.
  • Such a flat fuse according to the invention consists of only two parts, which are also simple and inexpensive to manufacture and connect to one another. In particular, it is also an extremely lightweight construction, and its space requirement is extremely small.
  • the flat fuse according to the invention can also be readily designed as a multiple fuse, in particular a double fuse, so that a further one is available after the first flat fuse has been used.
  • the flat fuse shown is a double fuse, which consists of two fuse elements 2 inserted into an injection molded plastic frame 1.
  • the plastic frame is heat stable, i.e. it keeps the temperatures occurring when the fuse melts.
  • Each securing element 2 consists of a sheet metal stamped part. Seen in plan view, it is U-shaped. The side legs form flat plugs with the contact surfaces 3, while the apex leg forms the fusible link 4.
  • the cross-sectional area of the fusible link 4 designed with the same width can be determined by a person skilled in the art for each application, depending on the one used
  • the free end regions of the side legs are each designed as flat hollow bodies 5, the broad sides of which run parallel to one another and have the contact surfaces 3 on the outside.
  • the flat hollow body 5 consists of a base part 6 with flaps 8 folded over it over arches 7, the mutually directed cutting edges of which form a longitudinally extending abutting edge 9.
  • At least one transverse bead 10 is pressed out of the base part 6 in the direction of the tabs 8, which are supported on the bead 10. This ensures that the contact surfaces 3 run parallel to one another.
  • a support tab 11 At the front end of the base part 6 there is a support tab 11, the function of which will be explained below.
  • the base part 6 is adjoined by a support tab 12 which is tapered relative to the base part and merges into the fusible link 4.
  • the plastic frame 1 has an H-shaped design in plan view. Both the vertical frame legs 13 and the horizontal frame legs 14 are double-walled, so that there is an H-shaped frame opening for the two securing elements 2.
  • the horizontal frame leg 14 is longitudinally through a central running web 15 divided into two chambers 27.
  • the web 15 also traverses the vertical frame legs 13, in some cases in each case with a sleeve-shaped end piece 16 which projects beyond the outer sides of the frame legs 13.
  • guide and latching edges 17 are formed on the outside, for which corresponding counter-guides are provided in the associated fuse panel or the like.
  • the walls 18 of the horizontal frame leg 14 continue into the vertical frame legs 13 through the supporting webs 19, the height of which is less than that of the walls 18.
  • An essential feature of the invention is the locking of the securing elements in a stretcher frame, which is ensured as follows.
  • a floor-free frame opening 21 extends from the support webs 19 to the end walls 20.
  • the walls 22-vertical frame legs 13 have recesses 23 in which the flat hollow body 5 is clamped.
  • the mutually opposite inner sides 25 of the walls 22 are chamfered over the length of the receiving area for the flat: hollow body in such a way that a larger opening width results on the upper side than on the underside (FIG. 2).
  • the oval preform has a smaller width so that it can be used through the narrower opening of the frame opening 21, the support tabs 11, 12 resting on the support web 19 and in the recess 23. If the flat hollow body is then brought into its final shape, particularly as shown in FIG. 2, with a press ram, the securing element is clamped captively. Bending 10 prevents the flaps 8 from being bent during preforming. The bead 10 guarantees the parallel position of the contact surfaces 3 after clamping and during use of the fuse and thus an exceptionally good contact.
  • the horizontal frame leg 14 has in each of its through the web 15 created chamber 27 a lower than the support web 19 floor 24.
  • the fusible link 4 projects into the chamber 27 without contact, especially since it is narrower than the chamber 27.

Landscapes

  • Fuses (AREA)
EP78100187A 1977-06-30 1978-06-19 Fusible plat Withdrawn EP0000164A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2729452A DE2729452C3 (de) 1977-06-30 1977-06-30 Flachsicherung
DE2729452 1977-06-30

Publications (1)

Publication Number Publication Date
EP0000164A1 true EP0000164A1 (fr) 1979-01-10

Family

ID=6012730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100187A Withdrawn EP0000164A1 (fr) 1977-06-30 1978-06-19 Fusible plat

Country Status (3)

Country Link
EP (1) EP0000164A1 (fr)
DE (1) DE2729452C3 (fr)
IT (1) IT1105376B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0778603A3 (fr) * 1995-12-05 1997-10-22 Sumitomo Wiring Systems Fusible plat et méthode pour sa fabrication
US5748935A (en) * 1995-01-26 1998-05-05 Sun Microsystems, Inc. Reconstruction of young bits in annex after mispredicted execution branch in pipelined processor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1053642B (de) * 1954-07-03 1959-03-26 Oskar Ackermann Offene Schmelzsicherung
US3818408A (en) * 1972-09-11 1974-06-18 O Andersson Fuse, more especially a weak-current fuse for motor vehicles or the like
US3878497A (en) * 1974-02-07 1975-04-15 Itt Fuse link assembly suitable for use in automotive electrical system
DE2500364A1 (de) * 1974-01-14 1975-07-17 Littelfuse Inc Stecksicherung
DE2511459A1 (de) * 1975-03-15 1976-09-23 Rau Swf Autozubehoer Anordnung zur absicherung der elektrischen anlage eines motorgetriebenen fahrzeuges
FR2302585A1 (fr) * 1975-02-27 1976-09-24 Peugeot & Renault Fusible reversible
FR2358008A1 (fr) * 1976-07-08 1978-02-03 Grote & Hartmann Coupe-circuit plat a fusible

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1053642B (de) * 1954-07-03 1959-03-26 Oskar Ackermann Offene Schmelzsicherung
US3818408A (en) * 1972-09-11 1974-06-18 O Andersson Fuse, more especially a weak-current fuse for motor vehicles or the like
DE2500364A1 (de) * 1974-01-14 1975-07-17 Littelfuse Inc Stecksicherung
US3878497A (en) * 1974-02-07 1975-04-15 Itt Fuse link assembly suitable for use in automotive electrical system
FR2302585A1 (fr) * 1975-02-27 1976-09-24 Peugeot & Renault Fusible reversible
DE2511459A1 (de) * 1975-03-15 1976-09-23 Rau Swf Autozubehoer Anordnung zur absicherung der elektrischen anlage eines motorgetriebenen fahrzeuges
FR2358008A1 (fr) * 1976-07-08 1978-02-03 Grote & Hartmann Coupe-circuit plat a fusible

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5748935A (en) * 1995-01-26 1998-05-05 Sun Microsystems, Inc. Reconstruction of young bits in annex after mispredicted execution branch in pipelined processor
EP0778603A3 (fr) * 1995-12-05 1997-10-22 Sumitomo Wiring Systems Fusible plat et méthode pour sa fabrication
US5781096A (en) * 1995-12-05 1998-07-14 Sumitomo Wiring Systems, Ltd. Planar fuse and method for making the same

Also Published As

Publication number Publication date
DE2729452B2 (de) 1979-10-04
DE2729452A1 (de) 1979-01-04
IT1105376B (it) 1985-10-28
DE2729452C3 (de) 1980-06-12
IT7850072A0 (it) 1978-06-28

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Inventor name: KOENNEMANN, ALFRED