EP0297297A1 - Vielleiter-Übertragungskabel mit zwecks Anschluss geändertem Leiterabstand und Herstellungsverfahren - Google Patents

Vielleiter-Übertragungskabel mit zwecks Anschluss geändertem Leiterabstand und Herstellungsverfahren Download PDF

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Publication number
EP0297297A1
EP0297297A1 EP88108706A EP88108706A EP0297297A1 EP 0297297 A1 EP0297297 A1 EP 0297297A1 EP 88108706 A EP88108706 A EP 88108706A EP 88108706 A EP88108706 A EP 88108706A EP 0297297 A1 EP0297297 A1 EP 0297297A1
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EP
European Patent Office
Prior art keywords
conductors
conductor
linear pathway
cable
insulation
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Withdrawn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
EP88108706A
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English (en)
French (fr)
Inventor
Rocco Noschese
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.)
FCI USA LLC
Original Assignee
Burndy Corp
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 Burndy Corp filed Critical Burndy Corp
Publication of EP0297297A1 publication Critical patent/EP0297297A1/de
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • This invention relates to multi-conductor flat cables and, more particularly, to a multi-conductor flat cable having a converted spacing between conductors and a method for making the same.
  • Multi-conductor flat cables or ribbon cables have been in use for a number of years as a means for electrical connection.
  • the cables are generally connected to circuit boards and the like by means of mass termination connectors which make discrete individual contact with the conductors in the cable.
  • a multi-conductor flat cable has a plurality of conductors which are generally encased and separated by a dielectric material along a first section of the cable.
  • the conductors are generally orientated in the first section, such as in the manner in which the cable is manufactured, along a first linear pathway with a first conductor pitch.
  • a second section of the cable has the conductors exposed or stripped of insulation along a diagonal path relative to the first linear pathway with a diagonal edge of insulation being located proximate a junction between the first and second sections.
  • the conductors have bent portions at the junction of the first and second sections of the cable such that the conductors in the second section of the cable are uniformly perpendicular to the diagonal edge and thereby form a second linear pathway.
  • the second linear pathway is generally obliquely angled from the first linear pathway with the conductors retained in parallel relationship to one another.
  • the exposed second linear pathway thereby has an enlarged spacing between conductors with a distance between adjacent conductors substantially equivalent to the distance between conductors measured along the diagonal edge of insulation.
  • the insulation of the cable is stripped from the cable at an angle such that the enlarged second conductor pitch in the second linear pathway is generally equivalent to the spacing between terminals in a ribbon cable connector.
  • the connector is connected to the cable at the exposed portion of the cable perpendicular to the second linear pathway with the terminals of the connector in discrete individual electrical connection with respective conductors in the cable.
  • the exposed conductors are redirected a second time to form a third linear pathway.
  • the insulation is not stripped from the third linear pathway which allows the cable to continue to additional connectors.
  • a patterned junction may be formed between the first linear pathway and the second linear pathway to thereby produce a second pitch pattern in the second linear pathway different from the first pitch pattern of the first linear pathway.
  • a ribbon cable comprising substantially parallel conductors encased and separated by dielectric material having a first conductor pitch pattern and oriented in a first linear pathway is intended to be connected to an electrical connector having terminals oriented with a second terminal pitch pattern.
  • a position on the cable is identified for connection to the electrical connector.
  • a portion of the dielectric material is stripped from the cable along a diagonal path relative to the first linear pathway.
  • the exposed conductors are reorientated adjacent a diagonal edge of insulation towards a perpendicular direction to the diagonal edge.
  • the resulting second linear pathway has exposed conductors with a trigonometrically enlarged conductor spacing.
  • An electrical connector can be connected to the cable along the second linear pathway with the conductors in the second linear pathway aligning with the terminals in the electrical connector.
  • FIG. 1 there is shown a perspective view of a multi-conductor flat transmission cable or ribbon cable 2 incorporating features of the invention.
  • the cable 2 in this embodiment, comprises a first linear pathway section 4 having first portions 12 of a plurality of conductors 8 and a cover 10 and a second linear pathway section 5 having second portions 14 of the conductors 8.
  • the conductors 8 are generally individual electrical wires or the like made of an electrically conductive material.
  • the conductors 8 are also relatively ductile and have a relatively small cross-sectional shape and size to allow for flexibility of the cable 2.
  • the first portions 12 of the conductors 8 are located in the first section 4 and are generally arranged in a row in the cable 2 in generally parallel relationship to each other. In this embodiment, the first portions 12 of the conductors 8 are generally spaced from adjacent conductors by a spacing or pitch A generally measured between the centerlines of parallel portions of adjacent conductors.
  • the cover 10 is generally made of a relatively flexible dielectric material or insulation which is located about the conductors 8 in the first section 4 to substantially encase the conductors 8 and maintain their spaced apart parallel relationship.
  • This arrangement of the conductors 8, as described above, generally forms a first pattern or pitch pattern and in this embodiment the pitch pattern generally consists of a row of equally spaced conductors 8 having the pitch A.
  • Fig. 2b a cross-sectional view of an alternate embodiment of the first section 4 is shown.
  • the conductors 8 have two different conductor pitches C and D.
  • the first pitch C is generally smaller than the second pitch D and thereby forms groups 13 of conductors 8.
  • the pitch pattern in this embodiment, generally consists of a row of conductor having groups of conductors 13 with the two pitchs C and D and is shown merely as an illustrative embodiment to emphasize that the invention of the present application is intended for use with all pitch patterns.
  • the first section 4 having the conductors 8 and cover 10 arranged as described above, generally forms a first linear pathway B.
  • the first linear pathway B generally runs along the entire length of the first section 4. Because the conductors 8 and cover 10 are relatively flexible, the first section 4 is relatively flexible along its entire length such that the first linear pathway B can vary, but remains along the uniform parallel path of the conductors 8.
  • the first section 4 has a width W which can vary with such factors as the number of conductors 8 in the first section 4 or the spacing A between conductors 8. Obviously, the length of the first section 4 can either be pre-determined or substantially continuous.
  • the second section 5 generally comprises the second portions 14 of the conductors 8 in spaced apart parallel relationship.
  • the second section 5 has a first end 26 located proximate the first section 4 and a second end 28.
  • the second end 28, in this embodiment, comprises the second portions 14 of the conductors 8 being substantially free.
  • the second end 28 can have the conductors 8 relatively fixed to one another by means such as a cover of dielectric material or alternatively having the cable continue either exposed or covered.
  • Located proximate the first end 26 of the second section 5 is a junction 44 formed between the first section 4 and the second section 5 and is easily identified, in this embodiment, by an insulation edge 22.
  • the edge 22 is generally established by the presence of the cover 10 in the first section 4 and the absence of a cover 10 in the second section 5.
  • the junction 44 need not be proximate the edge 22.
  • the junction 44 may be located at a pre-determined distance from the edge 22 with the first portions 12 of the conductors being relatively exposed between the edge 22 and the junction 44.
  • the second section 5 need not have its second portions 14 of the conductors totally exposed.
  • FIG. 2c there is shown an end view of the second section 5 of the cable 2 in Fig. 1 taken along line 2c-2c.
  • the conductors 8 in the second section 5 are the same conductors as in the first section 4.
  • the conductors 8 are thus relatively continuous between the first and second sections 4 and 5.
  • the second portions 14, in this embodiment, form a row of uniformly parallel exposed conductors 8.
  • the second portions 14 of the conductors 8 are oriented at an angle F to their respective first portions 12.
  • the second section 5 also has a spacing between conductors or a conductor pitch E which is different then the conductor pitch A in the first section 4.
  • the angle F in this embodiment, is the same for each conductor such that the second portions 14 of the conductor 8 form a second pitch pattern along a second linear pathway G.
  • the first pitch A is automatically changed or converted to the second pitch E at the junction 44, or in this embodiment, proximate the edge 22.
  • the junction 44 in this embodiment, is disposed diagonally across the width W of the cable 2 at an angle H relative to the first linear pathway B.
  • the conductors 8 proximate the diagonal edge 22 form redirection conductor portions which are bent or reorientated from their path along the first linear pathway B to their path along the second linear pathway G.
  • the bent conductors portions at the junction 44, proximate the region of the edge 22 form a trigonometric or geometric pitch conversion to convert conductor pitches or pitch patterns.
  • the trigonometric conversion of the conductor pitch allows for the uniform conversion of the pitch between the first section 4 and second section 5 of the cable 2 in an orderly fashion.
  • the second portion 14 of the conductors 8 are uniformly obliquely lateral or horizontal from the first portions 12 of the conductors 8 with the second portions 14 of the conductors 8 in the second section 5 being orientated substantially perpendicular to the edge 22.
  • the pitch E in the second section 5 would generally be equivalent to the distance between the centerlines of the conductors 8 along the edge 22 or, said another way, the fixed pitch A in the first section 4 divided by the cosine of the angle H.
  • the angle F can vary to increase or decrease the desired second pitch E even though the first pitch A remains constant because of the cover 10.
  • the length of the second section 5 can also vary as well as the angle H.
  • the first portions 12 of the conductors 8 need not been held in total parallel relationship in the first section 4 such as in braided flat cable.
  • the multi-pitch cable 2, as described above, can be manufactured by a variety of methods.
  • a substantially uniform cable 2 is formed with a first uniform pitch A.
  • a portion of the dielectric material of the cover 10 is stripped from a pre­determined position on the cable along a diagonal line or path relative to the first linear pathway B.
  • An edge 22 is thereby created and the conductors are uniformly bent proximate the edge 22 in a horizontally or laterally oblique angle.
  • the cover 10 in the first section 4 is used as a retaining means to hold the first portions 12 of the conductors 8 such that the second portions 14 can be laterally redirected with the conductors bending at the edge 22.
  • the exposed conductors thereby form a second linear pathway G obliquely angled from the first linear pathway B having a trigonometrically converted second conductor pitch E which is different from the first conductor pitch A.
  • a pitch conversion done in this fashion is uniform, orderly and relatively fast.
  • the second section 5 can then be connected to a connector 16 (not shown) or otherwise be terminated.
  • the connector 16 in the embodiment shown, is commonly known as a mass termination connector. However, any suitable type of connector can be used.
  • the connector 16 generally comprises a base 18, a cover 20 and a plurality of electrical terminals 24.
  • the base 18 and cover 20 are generally made of a dielectric material and are intended to connect to each other with the cable 2 therebetween.
  • the terminals 24 are generally made of an electrically conductive material and are discretely mounted in the base 18.
  • the terminals 24 are mounted in the base 18 with a general pitch or spacing I between the centers of adjacent terminals 24 and thereby have a terminal pitch pattern.
  • the terminal pitch pattern consists of a row of equally spaced terminals at a spacing of I.
  • Fig. 4 shows a perspective view of the connector 16 of Fig. 2 attached to the cable of Fig. 1.
  • the connector 16 in this embodiment, is mounted perpendicular to the second linear pathway G on the second section 5.
  • the connector 16 generally abuts against the edge 22 of the cover 10 of dielectric material in the first section 4.
  • the conductors 8 of the cable 2 have been bent or reoriented at the junction 44 such that the second conductor pitch E is substantially equivalent to the terminal pitch I.
  • the connector 16 is, therefore, allowed to be connected to the second section 5 of the cable 2 in a relatively fast manner with each of the conductors 8 in the second section 5 being spaced and oriented to make independent and relatively accurate contact to respective terminals 14 in connector 16 without any addition reorientation or any interconnection devices.
  • the converted pitch E on the cable 2 thereby allows a connector 16 having a terminal pitch pattern which is relatively larger than the pitch pattern of the first section 4 of the cable 2 to be electrically connected therewith in a fast, accurate and orderly fashion.
  • the conversion of the conductors 8 from the first section 4 to the second section 5 can be accomplished in a relatively small area and length of cable.
  • the second section 5 may have the second portions 14 of the conductors 8 bent both laterally in addition to being bent vertically relative to the first portions 12 of the conductors 8 in the first section 4.
  • the pitch E is about 0.050 inch or an increase of about 66 percent in spacing.
  • the cable 2 comprises a first section 4, a second section 5 and a third section 6.
  • the first section 4 is substantially the same as the first section 4 of the cable 2 of Fig. 1 wherein first portions 12 of the conductors 8 are encased and separated by a cover 10 of dielectric material.
  • the first section 4 has a first conductor pitch A and a first linear pathway B.
  • the second section 5 is substantially similar to the second section 5 of the cable 2 of Fig. 1 wherein second portions 14 of the conductors 8 are oriented in a second linear pathway G having a second conductor pitch E and being obliquely lateral from the first linear pathway B.
  • the third section 6 comprises third portions 30 of the conductors 8 generally arranged in a parallel row with a third conductor pitch J.
  • a cover 32 of dielectric material generally encases and separates the third portions 30 of the conductors 8.
  • An edge 34 of insulation is formed proximate a junction 46 between the second section 5 and the third section 6.
  • the third section 6 generally has a third linear pathway K which is obliquely angled to the second linear pathway G.
  • the second portions 14 of the conductors 8 are bent or reorientated proximate the second junction 46 at an angle L between the second portions 14 and the third portions 30 to convert the pitch of the conductors from the second pitch E to the third pitch J.
  • the angle L is equal to the angle F and the first pitch A is equivalent to the third pitch J.
  • the length of the second section 5 is equivalent to the width of the connector 16 such that the connector can be attached to the second section 5 without allowing the conductors 8 to be exposed after assembly as shown in Fig. 6.
  • a multi-conductor cable having a substantially uniform pitch pattern and a continuous cover 10 is stripped of a portion of the cover 10 across the width X of the cable 2 at a pre-determined position along a diagonal path.
  • any type of means can be used to strip the insulation, in a preferred method, the insulation is cut and then slid away from the cut along the conductors to expose the conductors.
  • the exposed conductors 8 are uniformly bent proximate a first position to create a second pathway and uniformly bent again proximate a second position to create a third pathway to thereby convert the conductor pitch from a first conductor pitch A in a first section 4 to a second conductor pitch E in a second section 5 and from the second conductor pitch E to a third conductor pitch J in a third section.
  • FIG. 7 shows a cable 2 having a curved junction 44 between the first section 4 and the second section 5 proximate a curved edge 22 of insulation.
  • the conductors 8 have their pitch converted at the junction 44 proximate the edge 22 with the second portion 14 of each conductor 8 being relatively perpendicular to the edge 22 proximate their individual bend.
  • the angle F is not the same for each conductor; however, the second portions 14 of the conductors 8 are all relatively uniformly perpendicular to the edge 22 proximate their bends.
  • Fig. 8 shows an alternate embodiment of the invention with the cable 2 having a patterned junction 44 proximate the edge 22.
  • the junction 44 as outlined by the edge 22, has a stepped pattern.
  • the conductors 8 have their pitch converted at the junction 44 proximate the edge 22 with the angle F being substantially uniform among conductors 8.
  • the second portions 14 of the conductors 8 are not uniformly perpendicular to the edge 22.
  • the resulting pitch pattern conversion allows the single pitch first section 4 to be converted into a dual pitch second section 5.
  • Fig. 9 shows an alternate embodiment of the invention with the cable 2 having a patterned shape relative to the first linear pathway B to form two junctions 35 and 37 proximate two edges 36 and 38.
  • the conductors 8 have their pitch converted at the junctions 35 and 37 proximate the two edges 36 and 38.
  • Each junction is located in an area for pitch conversion of only a limited pre-determined number of conductors 8 in the cable 2.
  • the first junction 35 is located proximate an area of a first pitch conversion of a first four conductors 40 and the second junction 37 is located proximate an area of a separate and independent pitch conversion of a second four different conductors 42.

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  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Insulated Conductors (AREA)
EP88108706A 1987-06-08 1988-05-31 Vielleiter-Übertragungskabel mit zwecks Anschluss geändertem Leiterabstand und Herstellungsverfahren Withdrawn EP0297297A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5900287A 1987-06-08 1987-06-08
US59002 1987-06-08

Publications (1)

Publication Number Publication Date
EP0297297A1 true EP0297297A1 (de) 1989-01-04

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EP88108706A Withdrawn EP0297297A1 (de) 1987-06-08 1988-05-31 Vielleiter-Übertragungskabel mit zwecks Anschluss geändertem Leiterabstand und Herstellungsverfahren

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EP (1) EP0297297A1 (de)
JP (1) JPS6463208A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373109A (en) * 1992-12-23 1994-12-13 International Business Machines Corporation Electrical cable having flat, flexible, multiple conductor sections

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH308153A (de) * 1952-10-17 1955-06-30 Hasler Ag Bandkabel und Verfahren zu dessen Herstellung.
US4406915A (en) * 1981-04-10 1983-09-27 Allied Corporation Offset reformable jumper
EP0106518A2 (de) * 1982-09-20 1984-04-25 AMP INCORPORATED (a New Jersey corporation) Flachkabel
US4484791A (en) * 1980-07-03 1984-11-27 E. I. Du Pont De Nemours And Company Connector for multiconductor flat insulated cable
US4501929A (en) * 1982-05-06 1985-02-26 The United States Of America As Represented By The Secretary Of The Air Force Multiconductor flat cable
DE3335194A1 (de) * 1983-09-28 1985-04-04 Siemens AG, 1000 Berlin und 8000 München Anschlussleiste mit angeschlossenem flachbandkabel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH308153A (de) * 1952-10-17 1955-06-30 Hasler Ag Bandkabel und Verfahren zu dessen Herstellung.
US4484791A (en) * 1980-07-03 1984-11-27 E. I. Du Pont De Nemours And Company Connector for multiconductor flat insulated cable
US4406915A (en) * 1981-04-10 1983-09-27 Allied Corporation Offset reformable jumper
US4501929A (en) * 1982-05-06 1985-02-26 The United States Of America As Represented By The Secretary Of The Air Force Multiconductor flat cable
EP0106518A2 (de) * 1982-09-20 1984-04-25 AMP INCORPORATED (a New Jersey corporation) Flachkabel
DE3335194A1 (de) * 1983-09-28 1985-04-04 Siemens AG, 1000 Berlin und 8000 München Anschlussleiste mit angeschlossenem flachbandkabel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Auszuge aus den Gebrauchsmustern, Vol. 11, No. 22, May 30, 1974 Wila Verlag fur Wirtschaftswerbung page 970 * DE-U-7 406 973 (Kabel- und Lackdraht)* *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373109A (en) * 1992-12-23 1994-12-13 International Business Machines Corporation Electrical cable having flat, flexible, multiple conductor sections

Also Published As

Publication number Publication date
JPS6463208A (en) 1989-03-09

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