EP0978850A2 - Câble plat multicouches - Google Patents
Câble plat multicouches Download PDFInfo
- 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- Withdrawn
Links
Images
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.
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 (fr) | 2000-02-09 |
EP0978850A3 EP0978850A3 (fr) | 2000-12-20 |
Family
ID=8552262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99660123A Withdrawn EP0978850A3 (fr) | 1998-08-04 | 1999-07-12 | Câble plat multicouches |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0978850A3 (fr) |
JP (1) | JP2000057856A (fr) |
CN (1) | CN1244020A (fr) |
BR (1) | BR9903419A (fr) |
CA (1) | CA2279578A1 (fr) |
FI (1) | FI981697A (fr) |
PL (1) | PL334766A1 (fr) |
Cited By (1)
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE130185C (fr) * | ||||
GB1266367A (fr) * | 1968-07-30 | 1972-03-08 | ||
US5262590A (en) * | 1992-04-27 | 1993-11-16 | Sheldahl, Inc. | Impedance controlled flexible circuits with fold-over shields |
-
1998
- 1998-08-04 FI FI981697A patent/FI981697A/fi unknown
-
1999
- 1999-07-12 EP EP99660123A patent/EP0978850A3/fr not_active Withdrawn
- 1999-08-03 CA CA002279578A patent/CA2279578A1/fr not_active Abandoned
- 1999-08-04 PL PL33476699A patent/PL334766A1/xx unknown
- 1999-08-04 CN CN 99111624 patent/CN1244020A/zh active Pending
- 1999-08-04 JP JP11220726A patent/JP2000057856A/ja active Pending
- 1999-08-04 BR BR9903419A patent/BR9903419A/pt not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE130185C (fr) * | ||||
GB1266367A (fr) * | 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)
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 (fr) | 2000-02-04 |
BR9903419A (pt) | 2001-03-20 |
EP0978850A3 (fr) | 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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