US3757269A - Cable shield connector - Google Patents

Cable shield connector Download PDF

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Publication number
US3757269A
US3757269A US00181030A US3757269DA US3757269A US 3757269 A US3757269 A US 3757269A US 00181030 A US00181030 A US 00181030A US 3757269D A US3757269D A US 3757269DA US 3757269 A US3757269 A US 3757269A
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US
United States
Prior art keywords
plate
shield
jacket
cable
tang
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
US00181030A
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English (en)
Inventor
R Baumgartner
H Graff
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
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 Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Application granted granted Critical
Publication of US3757269A publication Critical patent/US3757269A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies

Definitions

  • ABSTRACT A cable shield connector for providing electrical shield continuity at splice points or terminals utilizes contoured plates between which the shield and plastic outer jacket of the cable section are clamped.
  • the inner plate has an upstanding tang or tab on one end thereof and an upwardly protruding threaded stud spaced from the tab. The other end of the inner plate is slipped .beneath the shield and an outer plate is mounted on the sud over the exterior of the plastic jacket.
  • the inner plate can have an insulating layer on the underside thereof to prevent shorting of the cable conductors to the cable shield if damage occurs to the conductor insulation.
  • Another type of connector for providing shield continuity comprises a base which fits beneath the shield and has a stud protruding outwardly through a slit in the shield and outer jacket.
  • An outer bridge is mounted on the stud to clamp the shield and jacket between the base and the bridge.
  • a major disadvantage of such connectors is the necessity for slitting or tabing the cable shield and outer jacket to allow the .stud to protrude.
  • the slitting step adds considerably to the cost of installing such connectors. Further, the slitting step often results in cuts or damage to the insulation on the cable conductors thereby causing these conductors to be shorted to the cable shield. Additionally the slit cannot be completely closed after the connector is installed because of the stud protruding therethrough. Thus the shield is not in contact with the inner plate over a substantial portion of its surface and thereby an increase in contact resistance is produced.
  • Another object is to improve cable shield connectors to prevent damage to the cable shield.
  • a further object is to improve cable shield connectors to provide better electrical contact with the shield simultaneous with a mechanically stronger connection.
  • a still further object is to increase the contact area between the connector and cable shield to thereby decrease the contact resistance.
  • a connector comprising contoured plates between the ends of which the electrical shield and plastic jacket of the cable are clamped.
  • the inner plate of the connector has an upstanding ing or tab on one end thereof and an outwardly protruding threaded stud spaced from the tab.
  • the opposite end of the inner plate is slipped beneath the shield until the stud contacts the ends of the shield and jacket.
  • the outer plate is inserted on the stud over the jacket and forced toward the inner plate by a nut. The outer plate first contacts the upstanding tab of the inner plate and tends to pivot thereabout causing the other ends of the plates to tightly clamp the shield and jacket therebetween.
  • the tightening action also imparts a force component to the inner plate which keeps it securely wedged under the shield.
  • the inner plate contacts the shield over the entire portion thereof which is inserted in the cable to thereby' provide a low resistance connection.
  • the lower surface of the inner plate is coated with an insulation to prevent any shorting of conductors to the cable shield in the event of damage to the conductor insulation.
  • FIG. 1 is an exploded perspective view of a cable shield connector
  • FIG. 2 is an exploded perspective view showing the connector of FIG. 1 installed on a cable.
  • FIG. 1 shows in detail a cable shield connector 101 in accordance with the principles of this invention.
  • Connector 101 comprises an inner plate 10, an outer plate 20 and mounting hardware 30 such as nuts and washers for mounting plates 10 and 20 together.
  • Plates 10 and 20 are contoured to approximately match the contour of the shield and jacket of the cable, respectively.
  • Inner plate 10 has a threaded stud ll integrally fastened thereto by some method such as welding and projecting upwardly from the upper surface 12 thereof.
  • Upper surface 12 also has a plurality of serrations 13 or other projections to insure good electrical contact with the cable shield when the connector is installed.
  • On one end 17 of plate 10 is an upstanding tab or tang 14 which is integrally formed as part of plate 10. Tang 14 advantageously can have a slight angle backward from a plane perpendicular to surface 12 so that a force applied to the top edge of tang 14 will have a component parallel to surface 12 for reasons to become apparent subsequently.
  • the height of tang l4 advantageously can be greater than the combined thicknesses of the jacket and shield of the cable on which connector 101 is installed.
  • On the bottom of plate 10 is an insulating layer 15 which prevents plate 10 from shorting the cable shield to the conductors in the event of damage to the insulation of the conductors when connector 101 is installed. I
  • Outer plate 20 has an opening 21 through which stud 11 on plate 10 in inserted.
  • the inner surface of plate 20 has a plurality of sharp projections or tangs 22 for insuring a good mechanical bond to the plastic jacket of the cable over which plate 20 is installed.
  • Plate 20 has a length sufficient to insure that tang 14 on plate 10 firmly contacts the inner surface 23 of plate 20 on one end 25 thereof when plate 20 is installed on stud 11.
  • the inner surface 23 of plate 20 can have a notch or groove, not shown, in which tang l4 fits to prevent any slippage of plate 20 with respect to tang 14 after installation.
  • Plate 20 also has two upstanding tabs 24 on the other end 26 thereof for retaining a cable clamp on connector 101 should it become desirable to install such a clamp around the cable.
  • FIG. 2 an exploded view 'of connector 101 of FIG. 1 installed on a cable 40 is shown.
  • Inner plate 10 is slid between conductors 41 and shield 42 until stud ill butts against the ends 44 and 45 of outer plastic jacket 43 and shield 42 respectively.
  • a plastic sheath 46 is shown surrounding conductors 41 but can readily be omitted. No slit or incission need be made in jacket 43 or shield 42 as is required in prior art cable connectors.
  • Outer plate is installed over jacket 43 and a portion of mounting hardware 30 is then installed on stud 11. As hardware 30 is tightened, the inner surface 23 on end 25 of plate 20 first contacts tang 14.
  • plate 20 pivots about tang 14 thereby forcing end 26 of plate 20 and end 16 of plate 10 tightly together and clamping shield 42 and jacket 43 therebetween.
  • the large clamping forces prevent plate 10 from slipping from beneath shield 42.
  • the force applied to tang 14 by outer plate 20 can include a component parallel to the cable axis which tends to keep plate 10 shoved beneath shield 42. The relative magnitude of this component depends on the angle of incline of tang 14 with respect to a plane perpendicular to surface 12.
  • An appropriate conductor is then mounted on stud 11 with another portion of hardware 30 and electrically connects shield 42 across a splice point or to a terminal.
  • cable shield connectors could not be used without slitting the cable jacket and shield.
  • Such connectors had no tang such as tang 14 which made initial contact with the outer plate and about which the outer plate pivoted.
  • Tabs or tangs similar in appearance to tang 14 have been previously used on the inner plates of cable connectors but such tabs were used for facilitating insertion of the inner plate only. Such tabs extended beyond the end of the outer plate and made no contact therewith.
  • first plate of conductive material having top and bottom surfaces and first and second ends, said plate having an upstanding tang on said second end thereof;
  • a threaded stud mounted on said first plate and extending upwardly therefrom; said first plate adapted to have said first end inserted into said cable in contact with said shield so that said stud abuts said ends and said second end extends away from said ends along said cable a second plate having top and bottom surfaces and having first and second ends corresponding to said first and second ends of said first plate and adapted for installation on said stud over the exterior of said jacket; and
  • mounting means engaging said stud for forcing said second plate toward said first plate to cause said second end of said second plate to contact said tang causing said second plate to pivot thereabout so that said first ends of said first and second plates clamp together whereby said jacket and said shield can be clamped between said first ends when said assembly is installed on said cable.
  • first and second plates include a plurality of projections on the top and bottom surfaces, respectively, for insuring electrical and mechanical contacts with said shield and said jacket, respectively;
  • a cable and a shield connector for said cable comprising:
  • an electrical cable having a shield and an outer protective jacket overlaying said shield, said shield and said jacket being removed from a portion of said cable so as to form ends of said shield and said jacket, said ends being continuous about a circumference of said cable;
  • said plate having one end thereof inserted into said cable in contact with said shield so that said stud abuts said ends of said shield and jacket, said first plate having the other end thereof extending along said cable away from said ends of said shield and contacts said tang causing said second plate to pivot thereabout and clamp said shield and said jacket between said one end of said first plate and the other end of said second plate.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Cable Accessories (AREA)
  • Multi-Conductor Connections (AREA)
US00181030A 1971-09-16 1971-09-16 Cable shield connector Expired - Lifetime US3757269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18103071A 1971-09-16 1971-09-16

Publications (1)

Publication Number Publication Date
US3757269A true US3757269A (en) 1973-09-04

Family

ID=22662610

Family Applications (1)

Application Number Title Priority Date Filing Date
US00181030A Expired - Lifetime US3757269A (en) 1971-09-16 1971-09-16 Cable shield connector

Country Status (10)

Country Link
US (1) US3757269A (enrdf_load_stackoverflow)
JP (1) JPS5240438B2 (enrdf_load_stackoverflow)
BE (1) BE788870A (enrdf_load_stackoverflow)
CA (2) CA944035A (enrdf_load_stackoverflow)
CH (1) CH546486A (enrdf_load_stackoverflow)
DE (1) DE2243362C3 (enrdf_load_stackoverflow)
ES (1) ES406955A1 (enrdf_load_stackoverflow)
FR (1) FR2154046A5 (enrdf_load_stackoverflow)
GB (1) GB1408893A (enrdf_load_stackoverflow)
IT (1) IT965228B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122693A (enrdf_load_stackoverflow) * 1974-03-11 1975-09-26
US3915540A (en) * 1973-04-09 1975-10-28 John T Thompson Cable bonding assembly for use with spliced cables
US4026012A (en) * 1975-06-30 1977-05-31 Smith-Schreyer & Assoc., Inc. Method for installing a shield connector in a cable
FR2389041A1 (fr) * 1977-04-25 1978-11-24 Paillard Claude Frein electro-mecanique plus specialement pour vehicule remorque
US4140870A (en) * 1978-01-23 1979-02-20 Illinois Tool Works Inc. Cable grounding system
US4257658A (en) * 1979-05-07 1981-03-24 Hammond Daniel L Cable shield connector assembly
US4310209A (en) * 1980-02-25 1982-01-12 Western Electric Company, Inc. Cable shield connecting device
US4319939A (en) * 1979-07-02 1982-03-16 Bell Telephone Laboratories, Incorporated Method for making cable having a built-in cable shield bonding system
US4483632A (en) * 1982-07-15 1984-11-20 Owens-Corning Fiberglas Corporation Isothermal panel assembly for terminating a plurality of thermocouple leads
US4510346A (en) * 1983-09-30 1985-04-09 At&T Bell Laboratories Shielded cable
US5203721A (en) * 1992-09-01 1993-04-20 W. L. Gore & Associates, Inc. Molded plastic coaxial cable side tap connector
US5722840A (en) * 1993-05-05 1998-03-03 Electric Motion Company, Inc. Conductor protector
US6710251B2 (en) * 2001-05-22 2004-03-23 Electric Motion Company, Inc. Fiber optic cable shield bond system
US20130206928A1 (en) * 2010-09-02 2013-08-15 Yazaki Corporation Wire harness attachment structure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5646413U (enrdf_load_stackoverflow) * 1979-09-18 1981-04-25
JPS62145722U (enrdf_load_stackoverflow) * 1986-03-03 1987-09-14
US4895525A (en) * 1989-01-31 1990-01-23 A K Stamping Co. Inc. Cable shield grounding clamp connector

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915540A (en) * 1973-04-09 1975-10-28 John T Thompson Cable bonding assembly for use with spliced cables
JPS50122693A (enrdf_load_stackoverflow) * 1974-03-11 1975-09-26
US4026012A (en) * 1975-06-30 1977-05-31 Smith-Schreyer & Assoc., Inc. Method for installing a shield connector in a cable
FR2389041A1 (fr) * 1977-04-25 1978-11-24 Paillard Claude Frein electro-mecanique plus specialement pour vehicule remorque
US4140870A (en) * 1978-01-23 1979-02-20 Illinois Tool Works Inc. Cable grounding system
FR2415371A1 (fr) * 1978-01-23 1979-08-17 Illinois Tool Works Dispositif de mise a la terre d'un cable electrique blinde
US4257658A (en) * 1979-05-07 1981-03-24 Hammond Daniel L Cable shield connector assembly
US4319939A (en) * 1979-07-02 1982-03-16 Bell Telephone Laboratories, Incorporated Method for making cable having a built-in cable shield bonding system
US4310209A (en) * 1980-02-25 1982-01-12 Western Electric Company, Inc. Cable shield connecting device
US4483632A (en) * 1982-07-15 1984-11-20 Owens-Corning Fiberglas Corporation Isothermal panel assembly for terminating a plurality of thermocouple leads
US4510346A (en) * 1983-09-30 1985-04-09 At&T Bell Laboratories Shielded cable
US5203721A (en) * 1992-09-01 1993-04-20 W. L. Gore & Associates, Inc. Molded plastic coaxial cable side tap connector
US5722840A (en) * 1993-05-05 1998-03-03 Electric Motion Company, Inc. Conductor protector
US6710251B2 (en) * 2001-05-22 2004-03-23 Electric Motion Company, Inc. Fiber optic cable shield bond system
US20130206928A1 (en) * 2010-09-02 2013-08-15 Yazaki Corporation Wire harness attachment structure
US9166387B2 (en) * 2010-09-02 2015-10-20 Yazaki Corporation Wire harness attachment structure

Also Published As

Publication number Publication date
GB1408893A (en) 1975-10-08
JPS4837686A (enrdf_load_stackoverflow) 1973-06-02
FR2154046A5 (enrdf_load_stackoverflow) 1973-05-04
ES406955A1 (es) 1975-09-01
DE2243362C3 (de) 1974-11-07
JPS5240438B2 (enrdf_load_stackoverflow) 1977-10-12
CH546486A (de) 1974-02-28
DE2243362A1 (de) 1973-03-22
DE2243362B2 (de) 1974-04-11
CA1003519B (en) 1977-01-11
IT965228B (it) 1974-01-31
CA944035A (en) 1974-03-19
BE788870A (fr) 1973-01-02

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