EP1456857B1 - Flexible interconnect cable with ribbonized ends and method of manufacturing - Google Patents

Flexible interconnect cable with ribbonized ends and method of manufacturing Download PDF

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Publication number
EP1456857B1
EP1456857B1 EP02763270.2A EP02763270A EP1456857B1 EP 1456857 B1 EP1456857 B1 EP 1456857B1 EP 02763270 A EP02763270 A EP 02763270A EP 1456857 B1 EP1456857 B1 EP 1456857B1
Authority
EP
European Patent Office
Prior art keywords
sheath
wires
core
cable
shield
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.)
Expired - Lifetime
Application number
EP02763270.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1456857A1 (en
Inventor
Arthur Buck
Laurence A. Daane
Malai Hongthong
Cindy Lee Diegel
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.)
Ludlow Co LP
Original Assignee
Ludlow Co LP
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
Priority claimed from US10/025,096 external-priority patent/US6580034B2/en
Priority claimed from US10/186,525 external-priority patent/US6651318B2/en
Application filed by Ludlow Co LP filed Critical Ludlow Co LP
Publication of EP1456857A1 publication Critical patent/EP1456857A1/en
Application granted granted Critical
Publication of EP1456857B1 publication Critical patent/EP1456857B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01B7/08—Flat or ribbon cables
    • 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
    • H01B7/08—Flat or ribbon cables
    • H01B7/0892—Flat or ribbon cables incorporated in a cable of non-flat configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables

Definitions

  • a cable be very flexible, supple, or "floppy."
  • a stiff cable with even moderate resistance to flexing can make ultrasound imaging difficult.
  • the bundle of wires may be undesirably rigid.
  • cable assemblies having a multitude of conductors may be time-consuming and expensive to assemble with other components.
  • wires When individual wires are used in a bundle, one can not readily identify which wire end corresponds to a selected wire at the other end of the bundle, requiring tedious continuity testing.
  • the wire ends at one end of the cable are connected to a component such as a connector or printed circuit board, and the connector or board is connected to a test facility that energizes each wire, one-at-a-time, so that an assembler can connect the identified wire end to the appropriate connection on a second connector or board.
  • a ribbon cable in which the wires are in a sequence that is preserved from one end of the cable to the other may address this particular problem.
  • all the wires of the ribbon welded together they resist bending, creating an undesirably stiff cable.
  • a ribbon folded along multiple longitudinal fold lines may tend not to generate a compact cross section, undesirably increasing bulk, and may not provide a circular cross section desired in many applications.
  • EP 0 136 040 A2 describes an arrangement in which a ribbon cable is folded and surrounded by an insulating jacket.
  • EP 0 734 096 A2 discloses a heat-shrinkable shielded tube in which an electromagnetic wave shielding material is inserted into a heat-shrinkable tube. Electrical wires to be shielded are inserted into the tube and upon heating, the tube tightly engages the wires and provides electrical shielding.
  • WO 02/080198 A1 published after the present priority date describes a flexible interconnect cable with ribbonized ends as shown in Figure 1
  • Figure 1 shows a cable assembly 10 having a connector end 12, a transducer end 14, and a connecting flexible cable 16.
  • the connector end and transducer ends are shown as examples of components that can be connected to the cable 16.
  • the connector end includes a circuit board 20 with a connector 22 for connection to an electronic instrument such as an ultrasound imaging machine.
  • the connector end includes a connector housing 24, and strain relief 26 that surrounds the end of the cable.
  • an ultrasound transducer 30 is connected to the cable.
  • the cable 16 includes a multitude of fine coaxially shielded wires 32. As also shown in Figure 2 , the wires are arranged into groups 33, with each group having a ribbonized ribbon portion 34 at each end, and an elongated loose portion 36 between the ribbon portions and extending almost the entire length of the cable. Each ribbon portion includes a single layer of wires arranged side-by-side, adhered to each other, and trimmed to expose a shielding layer and center conductor for each wire. In the loose portion, the wires are unconnected to each other except at their ends.
  • the shielding and conductor of each wire are connected to the circuit board, or to any electronic component or connector by any conventional means, as dictated by the needs of the application for which the cable is used.
  • the loose portions 36 of the wires extend the entire length of the cable between the strain reliefs, through the strain reliefs, and into the housing where the ribbon portions are laid out and connected.
  • the ribbon portions 34 are each marked with unique indicia to enable assemblers to correlate the opposite ribbon portions of a given group, and to correlate the ends of particular wires in each group.
  • a group identifier 40 is imprinted on the ribbon portion, and a first wire identifier 42 on each ribbon portion assures that the first wire in the sequence of each ribbon is identified on each end. It is important that each group have a one-to-one correspondence in the sequence of wires in each ribbon portion. Consequently, an assembler can identify the nth wire from the identified first end wire of a given group "A" as corresponding to the nth wire at the opposite end ribbon portion, without the need for trial-and-error continuity testing to find the proper wire. This correspondence is ensured, even if the loose intermediate portions 36 of each group are allowed to move with respect to each other, or with the intermediate portions of other groups in the cable.
  • Figure 3 shows a cross section of a representative end portion, with the wires connected together at their outer sheathing layers 44 at weld joints 46, while the conductive shielding 50 of each of the wires remains electrically isolated from the others, and the inner dielectric 52 and central conductors 54 remain intact and isolated.
  • the ribbon portions may be secured by the use of adhesive between abutting sheathing layers 44, by adhesion of each sheathing layer to a common strip or sheet, or by a mechanical clip.
  • Figure 4 shows the cable cross section throughout most of the length of the cable, away from the ribbon portions, reflecting the intermediate portion.
  • the wires are loosely contained within a flexible cylindrical cable sheath 60.
  • a conductive braided shield 62 surrounds all the wires, and resides at the interior surface of the sheath to define a bore 64.
  • the bore diameter is selected to be somewhat larger than required to closely accommodate all the wires. This provides the ability for the cable to flex with minimal resistance to a tight bend, as shown in Figure 5 , as the wires are free to slide to a flattened configuration in which the bore cross section is reduced from the circular cross section it has when held straight, as in Figure 4 .
  • the wires preferably have an exterior diameter of .016 inch, although this and other dimensions may range to any size, depending on the application.
  • the cable has an overall exterior diameter of the jacket portion 60 of .330 inch and the sheath has a bore diameter of .270 inch. As the loose wires tend to pack to a cross-sectional area only slightly greater than the sum of their areas, there is significant extra space in the bore in normal conditions.
  • the sheath material is flexible PVC, with alternative materials including thermoplastic elastomer, or polyurethane.
  • the shield is extruded at a limited low temperature so that the sheath material maintains viscosity, does not excessively penetrate the pores or gaps between shield wires, and does not appreciably contact the core, except as minimally shown in Figure 7B . This avoids adhesion that would make core tube extraction difficult.
  • the sheath material partly encapsulates some of the shield wires, by at least partly encompassing them, and in selected embodiments, penetrating through interstices between the wires to contact or approach the surface of the core.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)
EP02763270.2A 2001-12-18 2002-07-11 Flexible interconnect cable with ribbonized ends and method of manufacturing Expired - Lifetime EP1456857B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US186525 1998-11-05
US10/025,096 US6580034B2 (en) 2001-03-30 2001-12-18 Flexible interconnect cable with ribbonized ends
US25096 2001-12-18
US10/186,525 US6651318B2 (en) 2001-03-30 2002-06-28 Method of manufacturing flexible interconnect cable
PCT/US2002/022172 WO2003052772A1 (en) 2001-12-18 2002-07-11 Flexible interconnect cable with ribbonized ends and method of manufacturing

Publications (2)

Publication Number Publication Date
EP1456857A1 EP1456857A1 (en) 2004-09-15
EP1456857B1 true EP1456857B1 (en) 2019-02-13

Family

ID=26699267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02763270.2A Expired - Lifetime EP1456857B1 (en) 2001-12-18 2002-07-11 Flexible interconnect cable with ribbonized ends and method of manufacturing

Country Status (7)

Country Link
EP (1) EP1456857B1 (ko)
JP (1) JP4624674B2 (ko)
KR (1) KR100974412B1 (ko)
CN (1) CN1293574C (ko)
AU (1) AU2002327238A1 (ko)
IL (1) IL162551A0 (ko)
WO (1) WO2003052772A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7271340B2 (en) * 2005-01-06 2007-09-18 Precision Interconnect, Inc. Flexible interconnect cable with insulated shield and method of manufacturing
JP5463953B2 (ja) * 2010-02-26 2014-04-09 住友電気工業株式会社 細径同軸ケーブルハーネス及びその製造方法
WO2011065430A1 (ja) * 2009-11-27 2011-06-03 住友電気工業株式会社 細径同軸ケーブルハーネス及びその製造方法
EP2784785A1 (en) * 2013-03-26 2014-10-01 Tyco Electronics Nederland B.V. Cable assembly
JP6755147B2 (ja) * 2016-08-29 2020-09-16 オリンパス株式会社 ケーブル、超音波プローブ、及び超音波内視鏡
CN110391563A (zh) * 2018-04-21 2019-10-29 富士康(昆山)电脑接插件有限公司 电互连系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29904944U1 (de) * 1999-03-18 1999-06-24 Fritschle, Simone, 70195 Stuttgart Mehrfachkabel
US20020139562A1 (en) * 2001-03-30 2002-10-03 Larry Daane Flexible interconnect cable with ribbonized ends

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2041256B (en) * 1979-01-24 1983-02-09 Bicc Burndy Ltd Electric wiring harnesses
DE3037561A1 (de) * 1980-10-04 1982-05-19 Sartorius GmbH, 3400 Göttingen Anschlusskabel fuer elektrische geraete
JPS6062008A (ja) 1983-08-31 1985-04-10 ミネソタ　マイニング　アンド　マニユフアクチユアリング　コンパニー 円形被覆ケーブル
JPS61142607A (ja) * 1984-12-14 1986-06-30 三菱電線工業株式会社 バスケ−ブル及びその製造方法
DE3721085A1 (de) * 1987-06-26 1989-01-05 Kabelmetal Electro Gmbh Verfahren zur herstellung eines elektrischen kabels
JPH0380920U (ko) * 1989-12-11 1991-08-19
JPH04179007A (ja) * 1990-11-09 1992-06-25 Hitachi Cable Ltd シールドケーブルの製造方法
JP2586710Y2 (ja) * 1991-07-10 1998-12-09 西日本電線株式会社 無停電工事用自己支持型ケーブル
JPH0794033A (ja) * 1993-09-24 1995-04-07 Sumitomo Wiring Syst Ltd 平型多芯電線
GB9414368D0 (en) * 1994-07-15 1994-09-07 Thorn Secure Science Ltd Authentication technique
US6064000A (en) 1995-03-18 2000-05-16 The Zippertubing Company Heat shrinkable shielding tube
JP3288205B2 (ja) * 1995-10-19 2002-06-04 株式会社オートネットワーク技術研究所 ワイヤーハーネス用電線の製造方法
JPH09161548A (ja) * 1995-12-05 1997-06-20 Harness Sogo Gijutsu Kenkyusho:Kk ワイヤーハーネス用フラット電線及びその製造
US5767442A (en) * 1995-12-22 1998-06-16 Amphenol Corporation Non-skew cable assembly and method of making the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29904944U1 (de) * 1999-03-18 1999-06-24 Fritschle, Simone, 70195 Stuttgart Mehrfachkabel
US20020139562A1 (en) * 2001-03-30 2002-10-03 Larry Daane Flexible interconnect cable with ribbonized ends

Also Published As

Publication number Publication date
JP4624674B2 (ja) 2011-02-02
CN1605108A (zh) 2005-04-06
JP2005513716A (ja) 2005-05-12
WO2003052772A1 (en) 2003-06-26
CN1293574C (zh) 2007-01-03
KR100974412B1 (ko) 2010-08-05
KR20040062997A (ko) 2004-07-09
EP1456857A1 (en) 2004-09-15
IL162551A0 (en) 2005-11-20
AU2002327238A1 (en) 2003-06-30

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