US3720906A - Electrical connector with extended cable support - Google Patents
Electrical connector with extended cable support Download PDFInfo
- Publication number
- US3720906A US3720906A US00156640A US3720906DA US3720906A US 3720906 A US3720906 A US 3720906A US 00156640 A US00156640 A US 00156640A US 3720906D A US3720906D A US 3720906DA US 3720906 A US3720906 A US 3720906A
- Authority
- US
- United States
- Prior art keywords
- conduit
- connector
- frusto
- wires
- cylindrical
- 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
Links
- 230000000717 retained effect Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 12
- 230000004323 axial length Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 4
- 239000012858 resilient material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
- F16G11/044—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord
- F16G11/048—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord by moving a surface into the cable
Definitions
- the plastic conduit affixed to and extending from the end of an electrical connector .to transmit radial and axial forces, acting on the electrical wires leading to the connector, away from the connection of the connector contacts and electrical wires.
- the plastic cable support includes a plurality of axial slots that permit the cable support to be compressed into the wires passing through the conduit so that the wires may be retained in a fixed-position.
- the plastic cable support transmits the redial and axial forces away from the connection of the wires to the contacts at least the distance of the cable support.
- This invention provides .a plastic sleeve of simple construction, that is connectable to an electrical connector to prevent the transmission of radial and axial forces applied to the wires from being transmitted to the wire terminals in the connector.
- the invention is a multi -contact axial type connector characterized by a plastic sleeve having one end connected to the electrical connector and the other end of the plastic sleeve in. pressurized contact with the wires leading to the connector. This arrangement permits the sleeve to retain the wires in a fixed position relative to the connector for at least the length of the plastic sleeve.
- One embodiment of the invention includes an electrical connector of the type having a metal housing, a resilient body located in the housing, a plurality of electrical contactslocated in the resilient body, and a plurality of wires each of which has oneend electrically connected to a contact and the other end extending away from the connector, and a means for supporting the electrical wires a predetermined distance from the connector which comprises: A plastic conduit through which the wires pass, the conduit having a first end portion having a shape similar to the shape of the connector and a tapered portion that tapers away from the first end portion and terminates in an opening smaller than the opening in the first end portion, the tapered portion having at least one axial slot therein extending from the opening in the tapered portion so that the tapered portion is radially compressible; means for radially compressing the tapered portion of the conduit, e.g., such as a plastic belt, so that the electrical wires extending through the conduit are retained in fixed positions; and means for demountably attaching the conduit to the connector, e.g.
- Another object of this invention is to provide an inexpensive device for preventing the breakage of wires from the electrical contacts in a connector.
- FIGS. 1 through 4 are illustrations of preferred embodiments of the cable support for a connector.
- FIG. 5 illustrate thecable support shown in FIG. 2 attached to a connector and supporting an electrical cable.
- FIG. dis a plastic belt which is used to tie down the cable support in a fixed position around the cable support.
- FIG. 1 illustrates a plastic conduit 10 having a configuration that embodies the principles of thisinvention.
- the conduit has a I 1.
- the axial slot 11 allows the smaller opening in the conduit to be reduced when a compressive force is applied to the cylindrical portion 7 of the-conduit. Since the conduit is comprised of a rigid material the cylinder cannot be'bent and, hence, the wires within the cylinder cannot be bent. 1
- FIG. 2 is an elongated version of the conduit shown in FIG. 1.
- the tapered portion 5 has a more gradual slope and extends further.
- the. entire conduit is also comprised of rigid material, such as plastic which is not compressible, therefore, it is necessary to have slot 11 in the conduit so that when a compressive force is applied to the cylindrical portion 7 the opening at the smaller end of the conduit is reduced.
- FIG. 3 illustrates a conduit that may be divided into two functional portions.
- a first rigid (e.g., plastic) cylindrical portion 1 having a shoulder 2 and an extension 12 and a second compressible portion 4 which may be comprised of a resilient material that may be repeatedly compressed.
- the resilient material has an inner diameter about the same as' the diameter of the extension 12 so that the compressible material 4 may be permanently secured to the extension 12 of the rigid portion 1 of the conduit 10.
- No axial slots are necessary in this embodiment in view of the fact that the end portion is comprised of a compressible material as opposed to the previous embodiments where the material was not compressible but the conduit in general was because of the axial slots.
- FIG. 4 illustrates a conduit that is generally frustoconical in shape and does not have any axial slots.
- this type of support When fabricated entirely from plastic, this type of support would be designed so that the opening at the smaller end of the frusto-conical conduit would be a specific size to receive a predetermined number of wires going to the connector.
- this type of conduit 'prevents radial forces from being transmitted to the connector, it does not do much to reduce any axial forces that would be applied to wires passing through the conduit from reaching the contacts in the connector. Therefore, in applications where axial forces applied to the wires is not a factor, this type of conduit, since it requires one less operation to fabricate (no slot), would Be most suitable as it is less expensive and would do the job.
- the smaller end portion 7 could be comprised of a resilient material, or the-end portion 7 and'the tapered portion 5 could be comprised of a resilient material so that the conduit 10 could be radially compressed against a plu rality of wires passing therethrough.
- FIG. 5 illustrates the functional advantages of the plastic conduit and how it cooperates with the electrical connector 49 and the wires 40 connected thereto to transmitaxial and radial forces away from the connector.
- the right-hand portion of the figure illustrates a partial cross-sectional view of a connector 49 that includes a resilient insert or body of nonconducting material (e.g., dielectric) 42, an electrical contact 43, and a metal housing 41 that includes a plurality of threads 46 for receiving a retaining ring 47.
- the retaining ring 47 threadably engages the electrical connector and as it is tightened down interacts with the shoulder 2 of the conduit 10 to bring the conduit into contact with the housing 41 of the electrical connector.
- the wires 40 having electrical conductors 45 therein, extend through the conduit 10 and to the electrical connector contacts 43 where they are either crimped or soldered to the contacts 43.
- the conduit 10 being comprised of a rigid material, protects the wires 40 within the conduit from being subjected to radial and axial forces. Without the conduit, movement of the wires 40 would weaken the connection of the wires to the contact 43, and in some instances, break away entirely.
- the wires 40 extending from the connector and within the conduit are both radially and axially supported.
- FIG. 6 is one preferred device for compressing the conduit which incorporates the principles of this invention.
- This particular means for compressing the conduit 10 is a belt of plastic 50 that has a plurality of directional ridges or teeth 51 along one surface thereof, a friction buckle 52, and an enlarged end portion 53.
- the opening in the buckle 52 is larger in size than twice the cross-sectional area of the smaller remaining end portion of the belt but smaller in size than thecombined cross-sectional area of the larger end portion 53 and the smaller end portion so that both end portions of the belt may not pass through the buckle together whereby when both of the end portions of the belt are drawn into the buckle together, the teeth in both of the end portions engage each other and force the belt into pressurized contact with the inside of the buckle thereby preventing further movement of the end portions of the. belt into said buckle.
- the teeth 51 engage the teeth in the end portion 53 so that the belt cannot move in a direction that will enlarge the loop A.
- Wires 40 to be connected to an electrical connector 49 are inserted through a retaining ring 47 and then through a plastic conduit 10 in such a manner that the retaining ring 47 will abut against the shoulder 2 of the conduit 10 and the larger cylindrical portion 1 of the conduit 10 will be closer to the connector 49 than the smaller cylindrical portion 7 of the conduit 10.
- the electrical wires 45 are then connected by suitable means to the contacts 43 of the connector. After the wires 45 are connected to the contacts 43 the retaining ring 47 and the conduit are ready to be located.
- the retaining ring 47 is tightened down on the connector housing 41 until the cylindrical portion 1 of the conduit abuts the connector housing 41 and is firmly locked into position between the housing 41 and the retaining ring 47.
- the plastic belt 50 is then placed around the narrow cylindrical portion 7 of the conduit 10 and the leading end of the belt passed through the opening in the friction buckle 52 and pulled tight. This action compresses the conduit into the insulation of the wires 40 and locks the belt 50 in a fixed position. Once assembled in this manner, axial and radial forces acting upon the wires 40 beyond the conduit 10 are prevented from reaching the connection of the wire 45 to the contacts 43.
- said supporting means including a conduit comprised of nonresilient material through which said wires pass,
- conduit being a unitary integral structure comprising:
- a frusto-conical conduit portion a first cylindrical and rigid conduit portion extending from the larger end of said frusto-conical portion
- said first cylindrical portion including a shoulder thereon facingsaid frusto-conical portion
- a second cylindrical conduit portion extending from the smaller end of said frusto-conical portion and terminating in a free end, said second cylindrical portion including a shoulder at said free end that faces said frusto-conical portion;
- said conduit comprising a unitary integral structure having a frusto-conical conduit portion
- first rigid cylindrical conduit portion at one end of said frusto-conical portion, said first cylindrical portion including a shoulder thereon that faces said frusto-conical portion
- a second cylindrical conduit portion at the other end of said frusto-conical portion that includes a shoulder thereon that faces said frusto-conical portion, and a plurality of axial slots in saidsecond cylindrical portion and said frusto-conical portion that extends the entire axial length of said second cylindrical portion and along at least a portion of said frusto-conical portion, said axial slots defining at least three axially rigid but radially moveable fingers that extend in a direction away from said first cylindrical portion, said fingers comprising greater than one half of the circumference of said second cylindrical portion; and
- coupling means engaging the shoulder in said first cylindrical portion of said conduit and demountably attaching said clamp to said connector.
- strain relief conduit is comprised of plastic.
- strain relief conduit includes means for retaining said second cylindrical portion in pressurized contact with said wires passing therethrough whereby said electrical wires in said conduit are protected from radial and axial forces.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15664071A | 1971-06-25 | 1971-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3720906A true US3720906A (en) | 1973-03-13 |
Family
ID=22560408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00156640A Expired - Lifetime US3720906A (en) | 1971-06-25 | 1971-06-25 | Electrical connector with extended cable support |
Country Status (2)
Country | Link |
---|---|
US (1) | US3720906A (en) |
CA (1) | CA941040A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3794960A (en) * | 1972-11-30 | 1974-02-26 | Itt | Junction shell |
US4564255A (en) * | 1983-05-19 | 1986-01-14 | Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung | Strain relief device for an electrical plug connector |
DE3438819A1 (en) * | 1984-10-23 | 1986-04-24 | Siemens AG, 1000 Berlin und 8000 München | Cable sleeve for screened connecting cables |
US5074805A (en) * | 1984-01-28 | 1991-12-24 | Mbb Gmbh | Terminal case for plug connectors |
US5344328A (en) * | 1993-06-28 | 1994-09-06 | Timothy Suggs | Spark plug keeper |
US5390965A (en) * | 1993-03-26 | 1995-02-21 | Edward Barber & Company Limited | Pipe connectors |
US5460540A (en) * | 1992-12-23 | 1995-10-24 | Reichle+De-Massari Ag | Anti-kink apparatus for cable plugs, in particular for computer systems and the like |
US5750933A (en) * | 1995-11-03 | 1998-05-12 | Progressive Tool & Industries Company | Weld cable end |
GB2331634A (en) * | 1997-10-22 | 1999-05-26 | Whitaker Corp | Coaxial connector for high power radio frequency systems |
US6485324B1 (en) * | 2001-09-27 | 2002-11-26 | General Electric Company | Adjustable electrical cord strain relief apparatus |
US20030103755A1 (en) * | 2001-10-18 | 2003-06-05 | Meyer Daniel B. | Optical fiber harness |
US20090098762A1 (en) * | 2007-10-10 | 2009-04-16 | Tyco Electronics Corporation | Wire clamp system for an electrical connector |
US20160087372A1 (en) * | 2015-12-01 | 2016-03-24 | Caterpillar Inc. | Strain relief structure |
US10297944B2 (en) * | 2017-03-17 | 2019-05-21 | Simon Simmonds | Single pole connector |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2035345A (en) * | 1935-06-04 | 1936-03-24 | Schaefer Stephen | Appliance plug |
US2830282A (en) * | 1954-12-28 | 1958-04-08 | Joy Mfg Co | Socket contact for electrical connector |
US3197829A (en) * | 1962-03-08 | 1965-08-03 | Panduit Corp | Binder strap |
US3622942A (en) * | 1970-04-27 | 1971-11-23 | Thomas & Betts Corp | Strain relief |
-
1971
- 1971-06-25 US US00156640A patent/US3720906A/en not_active Expired - Lifetime
-
1972
- 1972-02-24 CA CA135,472A patent/CA941040A/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2035345A (en) * | 1935-06-04 | 1936-03-24 | Schaefer Stephen | Appliance plug |
US2830282A (en) * | 1954-12-28 | 1958-04-08 | Joy Mfg Co | Socket contact for electrical connector |
US3197829A (en) * | 1962-03-08 | 1965-08-03 | Panduit Corp | Binder strap |
US3622942A (en) * | 1970-04-27 | 1971-11-23 | Thomas & Betts Corp | Strain relief |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3794960A (en) * | 1972-11-30 | 1974-02-26 | Itt | Junction shell |
US4564255A (en) * | 1983-05-19 | 1986-01-14 | Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung | Strain relief device for an electrical plug connector |
US5074805A (en) * | 1984-01-28 | 1991-12-24 | Mbb Gmbh | Terminal case for plug connectors |
DE3438819A1 (en) * | 1984-10-23 | 1986-04-24 | Siemens AG, 1000 Berlin und 8000 München | Cable sleeve for screened connecting cables |
US5460540A (en) * | 1992-12-23 | 1995-10-24 | Reichle+De-Massari Ag | Anti-kink apparatus for cable plugs, in particular for computer systems and the like |
US5390965A (en) * | 1993-03-26 | 1995-02-21 | Edward Barber & Company Limited | Pipe connectors |
US5344328A (en) * | 1993-06-28 | 1994-09-06 | Timothy Suggs | Spark plug keeper |
US5750933A (en) * | 1995-11-03 | 1998-05-12 | Progressive Tool & Industries Company | Weld cable end |
GB2331634A (en) * | 1997-10-22 | 1999-05-26 | Whitaker Corp | Coaxial connector for high power radio frequency systems |
GB2331634B (en) * | 1997-10-22 | 2002-03-06 | Whitaker Corp | Coaxial connector for high power radio frequency systems |
US6485324B1 (en) * | 2001-09-27 | 2002-11-26 | General Electric Company | Adjustable electrical cord strain relief apparatus |
US20030103755A1 (en) * | 2001-10-18 | 2003-06-05 | Meyer Daniel B. | Optical fiber harness |
US6668130B2 (en) * | 2001-10-18 | 2003-12-23 | Tektronix, Inc. | Optical fiber harness |
US20090098762A1 (en) * | 2007-10-10 | 2009-04-16 | Tyco Electronics Corporation | Wire clamp system for an electrical connector |
WO2009048546A1 (en) * | 2007-10-10 | 2009-04-16 | Tyco Electronics Corporation | Wire clamp system for an electrical connector |
US7618280B2 (en) | 2007-10-10 | 2009-11-17 | Tyco Electronics Corporation | Wire clamp system for an electrical connector |
US20160087372A1 (en) * | 2015-12-01 | 2016-03-24 | Caterpillar Inc. | Strain relief structure |
US10297944B2 (en) * | 2017-03-17 | 2019-05-21 | Simon Simmonds | Single pole connector |
Also Published As
Publication number | Publication date |
---|---|
CA941040A (en) | 1974-01-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENC Free format text: SECURITY INTEREST;ASSIGNOR:AMPHENOL CORPORATION;REEL/FRAME:004879/0030 Effective date: 19870515 Owner name: ALLIED CORPORATION, A CORP. OF NY Free format text: MERGER;ASSIGNOR:BENDIX CORPORATION, THE,;REEL/FRAME:004765/0709 Effective date: 19850401 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION, A CORP. OF DE, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 Owner name: AMPHENOL CORPORATION, LISLE, ILLINOIS A CORP. OF D Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION A CORP. OF DELAWARE Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CANADIAN IMPERIAL BANK OF COMMERCE;REEL/FRAME:006147/0887 Effective date: 19911114 |