EP0978850A2 - Mehrschichtiges Flachkabel - Google Patents

Mehrschichtiges Flachkabel Download PDF

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Publication number
EP0978850A2
EP0978850A2 EP99660123A EP99660123A EP0978850A2 EP 0978850 A2 EP0978850 A2 EP 0978850A2 EP 99660123 A EP99660123 A EP 99660123A EP 99660123 A EP99660123 A EP 99660123A EP 0978850 A2 EP0978850 A2 EP 0978850A2
Authority
EP
European Patent Office
Prior art keywords
cable
thin sheet
strip
multilayer
weakenings
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Withdrawn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
EP99660123A
Other languages
English (en)
French (fr)
Other versions
EP0978850A3 (de
Inventor
Jorma Pohjola
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.)
IWS International Oy
Original Assignee
IWS International Oy
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 IWS International Oy filed Critical IWS International Oy
Publication of EP0978850A2 publication Critical patent/EP0978850A2/de
Publication of EP0978850A3 publication Critical patent/EP0978850A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H01B7/0018—Strip or foil conductors

Definitions

  • the present invention relates to a multilayer flat cable of the type defined in the preamble of claim 1.
  • multilayer flat cables comprising a continuous strip of thin sheet which is folded for a multilayer flat cable as shown in fig. 1.
  • the folding zones present in the side edges of such cables tend to counteract the bending of a cable.
  • the cable fractures easily at its folding zones, which on its part contributes to rupturing the plastic coating of a cable.
  • the cable will have a bending arch which is discontinuous, as the bending occurs sharply at points of fracture.
  • An object of the invention is to provide a multilayer flat cable, which is more readily bendable and which is more durable as to its folding zones.
  • a cable 1 is made from a continuous strip of thin sheet 1a, the material of which preferably comprises copper.
  • the finished multilayer cable is coated with an insulation (not shown), the materials of which preferably comprise plastics generally used as a conductor insulation.
  • Fig. 2 depicts lengthwise folding zones A, B, C for the strip of thin sheet 1a, the number of which is three in the illustrated embodiment but the number of zones may range from one to five.
  • the strip of thin sheet 1a is pleated at the folding zones A, B, C for the multilayer flat cable 1 of fig. 1, having a height H which is about quadruple with respect to the material thickness of the thin sheet 1a, as well as a width which is about 1/4 with respect to the width of the thin sheet 1a.
  • the strip of thin sheet 1a of fig. 2 is machined at the folding zones A, B, C for elongated weakenings 2 lengthwise of the strip of thin sheet 1a, which in this embodiment comprise elongated successive cut-outs driven through the strip of thin sheet 1a.
  • the cut-outs 2 present in various folding zones A, B, C can be level with each other in the lateral direction of the strip of thin sheet 1a or staggered at different levels.
  • the cut-outs 2 can be successive, substantially circular holes, as shown in the folding zone B.
  • the weakenings 2 comprise continuous recesses or grooves lengthwise of the cable 1 and in line with each folding zone A, B, C.
  • the recesses or grooves 2 are made either by removing or displacing material.
  • the thickness of sheet material at the recesses or grooves has been reduced by 30 - 90 % from the original thickness.
  • the strip of thin sheet 1a is bent at each weakening 2 according to depicted curved arrows for the multilayer cable 1 of fig. 1.
  • the benefit provided by the recesses 2 for the cable 1 is the same as in the preceding embodiment.
  • a corresponding removal or displacement of material can also be effected after the bending, whereby weakenings 2a depicted in fig. 4 are worked by grinding or an equivalent technique to be flush with each other, while reducing the material thickness at the weakenings 2a.
  • the reduced thickness may vary between 70 - 10 % from the original thickness. This embodiment provides an improved fracture strength for the weakenings 2a.
EP99660123A 1998-08-04 1999-07-12 Mehrschichtiges Flachkabel Withdrawn EP0978850A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI981697 1998-08-04
FI981697A FI981697A (fi) 1998-08-04 1998-08-04 Monikerroksinen litteä johdin

Publications (2)

Publication Number Publication Date
EP0978850A2 true EP0978850A2 (de) 2000-02-09
EP0978850A3 EP0978850A3 (de) 2000-12-20

Family

ID=8552262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99660123A Withdrawn EP0978850A3 (de) 1998-08-04 1999-07-12 Mehrschichtiges Flachkabel

Country Status (7)

Country Link
EP (1) EP0978850A3 (de)
JP (1) JP2000057856A (de)
CN (1) CN1244020A (de)
BR (1) BR9903419A (de)
CA (1) CA2279578A1 (de)
FI (1) FI981697A (de)
PL (1) PL334766A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20218891U1 (de) * 2002-12-05 2004-04-15 Ghw Grote & Hartmann Gmbh Elektrischer Steckverbinder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102610299A (zh) * 2011-01-19 2012-07-25 一诺科技股份有限公司 低阻抗线芯与导线及制造线芯的方法
US20220184988A1 (en) * 2019-03-07 2022-06-16 Covestro Intellectual Property Gmbh & Co. Kg Layer structure for producing a hinge, in particular for producing multi-layered book covers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE130185C (de) *
GB1266367A (de) * 1968-07-30 1972-03-08
US5262590A (en) * 1992-04-27 1993-11-16 Sheldahl, Inc. Impedance controlled flexible circuits with fold-over shields

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE130185C (de) *
GB1266367A (de) * 1968-07-30 1972-03-08
US5262590A (en) * 1992-04-27 1993-11-16 Sheldahl, Inc. Impedance controlled flexible circuits with fold-over shields

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20218891U1 (de) * 2002-12-05 2004-04-15 Ghw Grote & Hartmann Gmbh Elektrischer Steckverbinder

Also Published As

Publication number Publication date
CA2279578A1 (en) 2000-02-04
BR9903419A (pt) 2001-03-20
EP0978850A3 (de) 2000-12-20
CN1244020A (zh) 2000-02-09
PL334766A1 (en) 2000-02-14
JP2000057856A (ja) 2000-02-25
FI981697A (fi) 2000-02-05
FI981697A0 (fi) 1998-08-04

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