US3794959A - Cable connector with strain relief - Google Patents

Cable connector with strain relief Download PDF

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Publication number
US3794959A
US3794959A US00200443A US3794959DA US3794959A US 3794959 A US3794959 A US 3794959A US 00200443 A US00200443 A US 00200443A US 3794959D A US3794959D A US 3794959DA US 3794959 A US3794959 A US 3794959A
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US
United States
Prior art keywords
supporting pin
cable connector
wires
connector assembly
cable
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
US00200443A
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English (en)
Inventor
G Kamolz
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.)
Alcatel Lucent NV
Original Assignee
International Standard Electric 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
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Publication of US3794959A publication Critical patent/US3794959A/en
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part

Definitions

  • a cable connector assembly is provided. It incorporates cavities and contact elements for terminals of [52] US. Cl 339/103 M wires forming a cable and includes a cavity into which [51] ll lt. Cl H01! 13/58 a Strain relief rod may be inserted The rod supports a [58] Field of Search 339/102, 103, 104, 105, 106, pair of spaced bosses between which a cable tie can be 339/107 used to hold the wires and thus translate strain on the wires to the strain relief rod. [56] References Cited FOREIGN PATENTS OR APPLlCATlONS Germany 339/104 7 Claims, 6 Drawing Figures PATENTEH 3.794.959
  • the present invention relates to a cable connector assembly having contact elements housed in insulator bodies thereof, and with connecting wires mounted thereto. It relates further to a device for effecting strainrelief for terminal wires terminating in the cable connector and finds particular utility in communications engineering.
  • Cable strain relievers mounted in the way described above have a detrimental effect upon the free access to the contact elements, especially in cases where they are to be inserted into the insulator body with the aid of a sleeve-shaped or tubular tool, or in cases where individual ones thereof are to be extracted subsequently thereto.
  • a strain relief of the type disclosed in the shoven 2 it would be possible to provide in such cases a strain relief of the type disclosed in the shoven 2).
  • This cable strain relief consists of an angular member, the one limb of which is provided with a bore adapted to the diameter of the thread on the cable introduction side, and is mounted to the casing by tightening the rear nut assembly, and with the other rectangularly bent-off limb thereof being bent once at its front end to such an extent that the cable is supported at this point and, on the other hand, comprises one or more slots next to this supporting point, for receiving cable clamps which, with the aid of clamping screws, enable the mounting of the cable thereto.
  • This cable holding device is intended for use in connection with circular cable introductions, and is thus not suitable, without modification, for cable connectors having cross sections other than only circular ones.
  • a further object is to provide that the device for mounting the wires shall be suitable for use in electrical connectors having any type of cross section.
  • the foregoing objects are attained in that on the rearward facing surface of an insulator body surrounded by a frame or a shell and housing the contact elements, or on the shell itself there is arranged a pin for supporting the wire bundle, and to which the individual wires of the bundle are attached by means of a tie strap or lacing tape.
  • the supporting pin is inserted with its mounting end, for example, in the contact cavity of the insulator body, which is arranged centrically and provided with a bayonet coupling sleeve.
  • An easy insertion of the supporting pin is effected in that the end of the supporting pin as mounted in the insulator body, is provided with a collar resulting from a conical recess ahead of it and extending slantingly in relation to the pins centerline.
  • the protection against torsion of the supporting pin within the insulator body of the cable connector is effected in that the portion of the supporting pin as inserted in the insulator body, is provided with one or more engaging noses or projecting portions distributed along the circumference thereof.
  • the end of the supporting pin as mounted in the insulator body is provided either with a conventional thread or with a sheet iron thread.
  • the depth of insertion of the supporting pin in the cable connector is restricted in that the supporting pin as provided with a thread, comprises a reinforced portion or thickening at the end of the thread.
  • the supporting pin is provided at its free end with two annular bulgings arranged at a spaced relation.
  • the recess for strap or lace type strain relief as restricted by said annular bulgings is constituted, for example, by a constriction.
  • the twisting or turning of the wire bundle can be reliably avoided in that the supporting pin, within the recess for the strap or lace type strain relief, has a preferably triangular cross section.
  • a tapping hole he provided at the end of the supporting pin facing the mounting side.
  • the shaft of the supporting pin has an elliptical cross section at the free end of which there are arranged two transverse straps extending parallel in relation to one another at a certain spaced relation.
  • a further embodiment of the supporting pin provides that the surfaces of the transverse straps respectively have a coneavely arranged shell-type arching.
  • an advantageous further embodiment of the supporting pin of the electrical connector is seen in that between the mounting end and the recess for a strap or lace type strain relief on the supporting pin, the shaft is offset or arranged by being bent at an angle of preferably 90.
  • the supporting pin is made either from metal or a plastics material.
  • the supporting pin made from a plastics material, be provided within the recess for strap or lace type strain relief, with a tie strap or lacing tape comprising a row of holes molded thereto, and with a hook or patent fastener arranged on the shaft.
  • both the insulator body and the supporting pin consist of one piece.
  • FIGS. 1 to 4 of the accompanying drawing in which:
  • FIG. 1 shows the insulator body of an electrical connector equipped with contact elements, and the cable supporting pin as inserted therein, to which there are attached the wires of the contact elements, in a side view and partly in a sectional elevation,
  • FIG. 2 shows the cable supporting pin according to FIG. 1 as seen from the side
  • FIG. 2A is a sectional view along 22 in FIG. 2,
  • FIG. 3 shows the cable supporting pin provided with an outside thread, in a side view
  • FIG. 4 shows an example of an embodiment of the cable supporting pin provided with a tapping hole, partly in a sectional view as it would appear if seen from the side, and
  • FIG. 4A is an end view of FIG. 4 showing cross-slots.
  • reference numeral 1 indicates the insulator body of an electrical cable connector.
  • This insulator body 1 contains a larger number of contact cavities 2 in each of which there is arranged a bayonet coupling sleeve 3 for detachably holding in position an inserted contact element 4 designed as a plug or socket. Holding in position is effected in that resilient bayonet tongues 5 engage behind the collar or shoulder portion 6 of the contact element 4.
  • a cable supporting pin 8 which, from the rearward facing surface of the connector is inserted into the contact cavity 2 of the insulator body 1 only containing a bayonet coupling sleeve 3.
  • the portion of the cable supporting pin 8 entering into the insulator body 1 corresponds to the cross sectional dimensions of the contact cavity 2 which is preferably of a circular design.
  • the end of the cable supporting pin 8 as inserted into the insulator body 1 is provided with a collar 9 which is constituted by a conical recess 10 arranged slantingly in relation to the centerline of the pin (see also FIG. 2).
  • the tongues 5 of the bayonet coupling sleeve 3 serve to lock the collar 9 in position as is the case with the contact elements 4.
  • the tongues 5 of the bayonet coupling sleeve 3 serve to lock the collar 9 in position as is the case with the contact elements 4.
  • the cable supporting pin 8 there are provided one or more noses or projecting members 1] distributed along the circumference of the pin shaft, with these noses pressing into the wall of the contact cavity 2 upon insertion of the supporting pin 8.
  • These noses 11 are either flush with the rear side facing surface of the insulator body 1, or project only to a small extent.
  • the supporting pin 8 At the end of the supporting pin 8 extending straight forward out of the insulator body 1 in the direction of the cable introduction side, there is arranged an annular bulging l2 and, at a certain spaced relation, a second such bulging 13. Between the bulgings 12 and 13 there is provided the recess 14 for the strap of lace type strain relief 15, for holding in position the wires 7.
  • the bulgings l2 and 13 thus serve to define the position of the tie strap or lacing tape 15 for surrounding and holding together the wires 7 as distributed around the cable supporting pin 8.
  • the supporting pin 8 within the recess for strap or lace type strain relief 14 may, for example, have a triangular cross section as indicated most clearly in FIG. 2A.
  • FIG. 3 Another example of embodiment relating to the cable supporting pin 8 is shown in FIG. 3.
  • the end thereof intended for effecting the mounting in the insulator body 1, is provided either with a conventional thread, or with a so-called sheet iron thread 16 which may also be of the self-cutting type.
  • a thickening or reinforced portion 17 acting as a limit stop.
  • FIG. 4 A further example of embodiment of the supporting pin 8 is shown in FIG. 4.
  • the recess for the strap or lace type strain relief 14 for holding in position the wires 7, is characterized by a constriction 18 on the supporting pin 8.
  • a tapping hole 21 is provided at its end facing the mounting side.
  • the free end surface 19 of the pin may be cross-slotted as indicated at 21 in FIG. 4A.
  • the supporting pin 8 can be mounted to any suitable point of the insulator body in the empty contact cavities 2 or in other recesses specially provided therefor.
  • the mounting of the supporting pin 8 at the rim portion of the facing surface of the insulator body 1 may be desirable, for example, in cases where the wires 7 are led in from the side.
  • a bending 'of the supporting pin 8 is proposed between the recess for the strap or lace type strain relief 14 and the mounting end, with this bending preferably amounting to Provided that the recess 14 is sufficiently spaced from the contact sleeves 4, the shaft 20 of the supporting pin 8 arranged out of the center, may be bent towards the center without thus affecting the accessibility of the contact elements 4.
  • the supporting pin 8 In dependence upon the density of contacts arranged in the insulator body 1 it is also advisable to design the supporting pin 8 in such a way that its shaft 20 has an elliptical cross section. At its free end there may then be provided two transverse straps extending parallel in relation to one another at a certain spaced relation, with the surfaces thereof respectively having a shelltype concave arching. In these archings there will then come to lie the wires 7 adjacent the shaft 20. The two (not shown) transverse straps, in turn, serve to fix the position of the tie strap or lacing tape 15.
  • the cable supporting pin 8 there may be used either metal or a plastics material.
  • a supporting pin 8 made from a plastics material it is possible to provide a recess 14 with a tie strap 15 molded thereto, and containing a row of holes suitable for effecting the mounting of a hook or patent fastener likewise molded to the supporting pin 8.
  • the insulator body 1 and the cable supporting pin 8 may consist of one injection-model part.
  • a cable connector assembly comprising an insulator body, bayonet coupling sleeves secured in contact cavities in the insulator body to receive and hold contact elements forming terminals of a plurality of wires, a device for holding the wires and relieving strain on the terminals of the wires, the device consisting of a supporting pin having a first end inserted in a bayonet coupling sleeve in the contact cavity, and said pin including a recess near its second end into which the individual wires of the bundle are attachable by means of a tie strap.
  • a cable connector assembly according to claim 1 in which an end of said supporting pin as mounted in said insulator body is provided with a collar resulting from a conical recess ahead of it and extending slantingly in relation to said pins centerline.
  • a cable connector assembly according to claim 1 in which said supporting pin is provided at its free end with two annular bulgings arranged at spaced relations to form the recess.
  • a cable connector assembly according to claim 1 in which said supporting pin, within said recess for the tie strap, has a triangular cross section.
  • a cable connector assembly according to claim 1 in which a tapping hole is provided at the first end of said supporting pin facing the mounting side.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US00200443A 1970-10-22 1971-11-19 Cable connector with strain relief Expired - Lifetime US3794959A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702051914 DE2051914A1 (de) 1970-10-22 1970-10-22 Kabelkupplung
US20044371A 1971-11-19 1971-11-19

Publications (1)

Publication Number Publication Date
US3794959A true US3794959A (en) 1974-02-26

Family

ID=25759947

Family Applications (1)

Application Number Title Priority Date Filing Date
US00200443A Expired - Lifetime US3794959A (en) 1970-10-22 1971-11-19 Cable connector with strain relief

Country Status (4)

Country Link
US (1) US3794959A (2)
CA (1) CA972440A (2)
DE (1) DE2051914A1 (2)
FR (1) FR2111475A5 (2)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880490A (en) * 1973-10-01 1975-04-29 Lockheed Aircraft Corp Means and method for protecting and spacing clamped insulated wires
US3922051A (en) * 1973-12-20 1975-11-25 Amp Inc Connector for alphanumeric display panels
DE3116027A1 (de) * 1981-04-22 1982-11-11 Bunker Ramo Corp., 60521 Oak Brook, Ill. Elektrischer steckverbinder
US4362350A (en) * 1980-06-09 1982-12-07 International Telephone And Telegraph Corporation Contact retention assembly
US4648677A (en) * 1985-05-31 1987-03-10 Allied Corporation Electrical connector assembly and method for terminating cable
US5158476A (en) * 1992-01-24 1992-10-27 Landis & Gyr Metering Inc. Modular strain relief device for electrical connectors
US5368504A (en) * 1991-12-09 1994-11-29 Itt Corporation Shielded cable connector
EP0913890A3 (en) * 1997-10-30 2000-04-05 The Whitaker Corporation Multi-exit strain relief for an electrical connector
US20030077935A1 (en) * 2001-04-19 2003-04-24 Medtronic, Inc Medical lead and lead connector system
US20070290687A1 (en) * 2006-06-16 2007-12-20 Hisashi Kawachi Magnetic resonance imaging apparatus and method of conveying the magnetic resonance imaging apparatus
EP1903362A1 (en) 2003-07-17 2008-03-26 Teraspan Networks Inc. Protective casing for installation within a ground surface at a node of a subsurface fibre optic cable network and method of installing a subsurface cable network within a surface
US20090117775A1 (en) * 2006-11-02 2009-05-07 Timothy Lee Kocher Wire retention connector system
CN101159356B (zh) * 2006-10-06 2010-06-16 住友电装株式会社 电线保持器和电线保持方法
WO2013119397A1 (en) * 2012-02-10 2013-08-15 Itt Manufacturing Enterprises, Llc Electrical connector for cables

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858960A (en) * 1973-06-04 1975-01-07 Amp Inc Strain relief means for electrical connectors
US3905672A (en) * 1974-05-28 1975-09-16 Itt Sealed electrical connector
US4341431A (en) * 1980-06-16 1982-07-27 Amp Incorporated Strain relief
JPH07118348B2 (ja) * 1990-07-04 1995-12-18 英朗 茂治 ケーブルの抜け止め装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE361615C (de) * 1922-10-17 Jacob Hendrik Van Viersen Deckenrosette

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE361615C (de) * 1922-10-17 Jacob Hendrik Van Viersen Deckenrosette

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880490A (en) * 1973-10-01 1975-04-29 Lockheed Aircraft Corp Means and method for protecting and spacing clamped insulated wires
US3922051A (en) * 1973-12-20 1975-11-25 Amp Inc Connector for alphanumeric display panels
US4362350A (en) * 1980-06-09 1982-12-07 International Telephone And Telegraph Corporation Contact retention assembly
DE3116027A1 (de) * 1981-04-22 1982-11-11 Bunker Ramo Corp., 60521 Oak Brook, Ill. Elektrischer steckverbinder
US4648677A (en) * 1985-05-31 1987-03-10 Allied Corporation Electrical connector assembly and method for terminating cable
US5368504A (en) * 1991-12-09 1994-11-29 Itt Corporation Shielded cable connector
US5158476A (en) * 1992-01-24 1992-10-27 Landis & Gyr Metering Inc. Modular strain relief device for electrical connectors
EP0913890A3 (en) * 1997-10-30 2000-04-05 The Whitaker Corporation Multi-exit strain relief for an electrical connector
US20050065570A1 (en) * 2001-02-21 2005-03-24 Medtronic, Inc. Medical lead and lead connector system
US7287995B2 (en) 2001-02-21 2007-10-30 Stein Paul M Medical lead and lead connector system
US20080039900A1 (en) * 2001-02-21 2008-02-14 Stein Paul M Lead up-sizing sleeve
US6854994B2 (en) * 2001-04-19 2005-02-15 Medtronic, Inc. Medical electrical lead connector arrangement including anti-rotation means
US20030077935A1 (en) * 2001-04-19 2003-04-24 Medtronic, Inc Medical lead and lead connector system
EP1903362A1 (en) 2003-07-17 2008-03-26 Teraspan Networks Inc. Protective casing for installation within a ground surface at a node of a subsurface fibre optic cable network and method of installing a subsurface cable network within a surface
US20070290687A1 (en) * 2006-06-16 2007-12-20 Hisashi Kawachi Magnetic resonance imaging apparatus and method of conveying the magnetic resonance imaging apparatus
US7501824B2 (en) * 2006-06-16 2009-03-10 Ge Medical Systems Global Technology Company, Llc Magnetic resonance imaging apparatus and method of conveying the magnetic resonance imaging apparatus
CN101159356B (zh) * 2006-10-06 2010-06-16 住友电装株式会社 电线保持器和电线保持方法
US20090117775A1 (en) * 2006-11-02 2009-05-07 Timothy Lee Kocher Wire retention connector system
WO2013119397A1 (en) * 2012-02-10 2013-08-15 Itt Manufacturing Enterprises, Llc Electrical connector for cables
US8859899B2 (en) 2012-02-10 2014-10-14 Itt Manufacturing Enterprises, Llc Electrical connector for cables

Also Published As

Publication number Publication date
FR2111475A5 (2) 1972-06-02
CA972440A (en) 1975-08-05
DE2051914A1 (de) 1972-04-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311