US3129996A - Cable connector - Google Patents

Cable connector Download PDF

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Publication number
US3129996A
US3129996A US185728A US18572862A US3129996A US 3129996 A US3129996 A US 3129996A US 185728 A US185728 A US 185728A US 18572862 A US18572862 A US 18572862A US 3129996 A US3129996 A US 3129996A
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United States
Prior art keywords
terminal member
cable
openings
connector
cables
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Expired - Lifetime
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US185728A
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Ross E Locher
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ZINSCO ELECTRICAL PRODUCTS
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ZINSCO ELECTRICAL PRODUCTS
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Priority to US185728A priority Critical patent/US3129996A/en
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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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/065—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using screw-thread elements
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/30—Dovetail-like connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7129—Laterally spaced rods
    • Y10T403/7141—Plural channels in connector

Definitions

  • Circuits with a plurality of cables in parallel are being used extensively for high current applications in place of a single very large cable. It is desirable in multiple cable circuitry to be able to connect al of the cables at one terminal and in one operation. Normally a multiple cable circuit will use two or three cables but the practice is not limited to any specific number of cables.
  • a further object is to provide such a connector which is particularly suitable for use with large diameter cables, in the range of one-half inch diameter and up, and one which will provide desirable large mechanical clamping forces on the cables.
  • Another object is to provide such a connector in which the clamping force is obtained by actuating a single device Which provides equal clamping forces on each of the cables coupled thereto.
  • a further object is to provide such a connector including a retainer coupled to the terminal member and to the sliding member for retaining the members together when a cable is not being clamped therein.
  • the sliding member comprises first and second arm units and a nut unit positioned between the arm units and having end portions engaging mating openings in the arm units, with the arm units carrying the cable-receiving openings and with the nut unit carrying the screw positioned at the end of the terminal member.
  • the invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description.
  • the drawing merely shows and the description rnerely describes a preferred embodiment of the present invention which is given by way of illustration or example.
  • FIG. 1 is a perspective view of a preferred embodiment of the cable connector
  • FIG. 2 is a side view of the connector of FIG. 1 showing two cables clamped therein;
  • FIG. 3 is an end View of the connector of FIG. 1;
  • FIG. 4 is a sectional view taken along the line 44 of FIG. 3;
  • FIG. 5 is a partial sectional View taken along the line 55 of FIG. 3;
  • FIG. 6 is a sectional view taken along the line 6-6 of FIG. 2.
  • the connector illustrated in the drawings includes a terminal member lil shown here as an L-shaped piece or" electrical bus bar ailixed to another conductor bar 11 by screws 12.
  • the terminal member 10 could be merely formed at the end of the bar ll or could take other convenient shapes.
  • a plurality of openings 13 is provided in the terminal member 1'8 for receiving the electrical cables which are to be connected to the terminal member. Any number of openings may be utilized.
  • a sliding member 16 is positioned over the terminal member and 1.1C1Ud35 arms 17, 13 on either side of the terminal member with openings l9, 29 therein, respectively, corresponding to the openings 13 in the terminal member.
  • the sliding member 16 may be made in one piece, normally U-shaped, but preferably is made of two arm units corresponding to the arms 17 l8, and a nut 21 which is joined to the arm units.
  • the nut may be a cruciform shape as seen in FIG. 5, with bosses 22, 23 project ing through corresponding openings 24, 25 m the arms 17, 1 .8.
  • the nut 21 and arms 17, Iii-3 may be joined by various conventional means, as by peening over the ends of the bosses as seen in FIG. 2.
  • a screw 28 is positioned in a threaded opening in the nut 21 and preferably has a rounded end for engaging an end of the terminal member.
  • a retainer 29 may be provided in the connector for retaining the terminal member and sliding member together prior to the clamping of a cable therein.
  • a pr ierred form of the retainer is best seen in FIG. 6 and includes a first yoke 30 enclosing the nut 21 and a second yoke 31 engaging a wedge-shaped end 32 of the terminal member ll), the yoltes 3t), 31 being joined together as by spot welding.
  • a clearance opening 33 is provided in the upper end of the retainer for the screw 23.
  • the cable connector of the invention may be fixed to a bus bar in a terminal box or the like as shown in FIG. 1.
  • the screw 28 is adjusted to bring the cablereceiving openings of the arms of the sliding member into alignment with the cable-receiving openings of the terminal member, as best seen in FIG. 4.
  • Cables 49, 41 are inserted into the sets of aligned openings as seen in FIG. 2.
  • two cables having over-all conductor diameters in the order of threequarters of an inch are being used. Normally cables of this size will comprise a plurality of strands of smaller conductors, but of course the connector could be used with solid cables.
  • the screw 28 is rotated to move the sliding member upward with respect to Le terminal member for clamping the cables in the aligned openings, as seen in FIG. 6. While described herein as a device for connecting cables to a bus bar or the like, the connector is equally applicable for interconnecting two or more cables.
  • the cable connector operat s to provide a very strong mechanical clamping force on each of the plurality of cables clamped therein.
  • the connector also provides equalization of clamping forces on each of the cables while requiring operation of only a single screw. The highly desirable objectives of the invention are thus accomplished.
  • a U-shaped sliding member positioned over said terminal member with the bight of said U at said end of said terminal member, with the arms of said sliding member having aligned cable-receiving openings therethrough and alignable with cable-receiving openings of said terminal member to provide a plurality of sets of aligned openings
  • said sliding member comprising first and second arm units and a nut unit positioned between said arm units and having end portions engaging mating openings in said arm units; a retainer having a first yoke enclosing a portion of said nut and a second yoke enclosing said Wedge-shaped end for retaining said members together; and a screw carried in a threaded opening in said nut unit for applying a force on said end of said terminal member for moving said sliding member relative to said terminal member and clamping a cable in each of the sets of aligned openings.
  • a terminal member having a plurality of cable-receiving openings therethrough adjacent an end thereof with the axes of said openings parallel;
  • a U-shaped sliding member positioned over said terminal member with the bight of said U at said end of said terminal member, With the arms of said sliding member having aligned cable-receiving openings therethrough and alignable with cable-receiving openings of said terminal member to provide a plurality of sets of aligned openings, said sliding member comprising first and second arm units and a nut unit positioned between said arm units and having end portions engaging mating openings in said arm units;
  • a screw carried in a threaded opening in said nut unit for applying a force on said end of said terminal member for moving said sliding member relative to said terminal member and clamping a cable in each of the sets of aligned openings.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Description

April 21, 1964 R. E. LOCHER 3,129,996
CABLE CONNECTOR Filed April 6, 1962 INVENTOR P055 E. LOCHER BY HIS ATTORNEYS HARRIS, K/ECH, Russzu. 8: /(ER- United States Patent 3,129,995 CABLE CfiNNECTGR Ross E. Locher, South Pasadena, (Iahi, assignor to Zinsco Electrical Products, Los Angeles, Calif., a corporation of California Filed Apr. 6, 1962, Ser. No. 1ss,72s 2 Claims. (Ql. 339-249) This invention relates to electrical cable connectors whicare used principally for connections with high current capacity to terminal boards, switch boxes and the like, although the connectors are suitable for any electrical cable connection. Circuits with a plurality of cables in parallel are being used extensively for high current applications in place of a single very large cable. It is desirable in multiple cable circuitry to be able to connect al of the cables at one terminal and in one operation. Normally a multiple cable circuit will use two or three cables but the practice is not limited to any specific number of cables.
It is an object of the present invention to provide a cable connector which may be used to connect a plurality of cables to a bus bar or other terminal device. A further object is to provide such a connector which is particularly suitable for use with large diameter cables, in the range of one-half inch diameter and up, and one which will provide desirable large mechanical clamping forces on the cables. Another object is to provide such a connector in which the clamping force is obtained by actuating a single device Which provides equal clamping forces on each of the cables coupled thereto.
It is an object of the present invention to provide a connector for electrical cables including a terminal member having a plurality of cable-receiving openings therethrough adjacent an end thereof, a bifurcated or U-shaped sliding member positioned over said terminal member with the arms of said sliding member having aligned cablereceiving openings therethrough and alignable with cablereceiving openings of the terminal member to provide a plurality of sets of ali ned openings, and screw means carried in a threaded opening in one of the members for applying a force to the other of the members for moving the sliding member relative to the terminal member and clamping a cable in each of the sets of aligned openings. A further object is to provide such a connector including a retainer coupled to the terminal member and to the sliding member for retaining the members together when a cable is not being clamped therein.
it is a particular object to provide such a connector in which the sliding member comprises first and second arm units and a nut unit positioned between the arm units and having end portions engaging mating openings in the arm units, with the arm units carrying the cable-receiving openings and with the nut unit carrying the screw positioned at the end of the terminal member.
It is an object of the invention to provide a connector for a plurality of electrical cables which connector is rugged, durable, simple in design and operation, and adapted for repeated use while providing large and equalized mechanical loads on each of the cables connected thereto.
The invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description. The drawing merely shows and the description rnerely describes a preferred embodiment of the present invention which is given by way of illustration or example.
In the drawing:
FIG. 1 is a perspective view of a preferred embodiment of the cable connector;
"ice
FIG. 2 is a side view of the connector of FIG. 1 showing two cables clamped therein;
FIG. 3 is an end View of the connector of FIG. 1;
FIG. 4 is a sectional view taken along the line 44 of FIG. 3;
FIG. 5 is a partial sectional View taken along the line 55 of FIG. 3; and
FIG. 6 is a sectional view taken along the line 6-6 of FIG. 2.
The connector illustrated in the drawings includes a terminal member lil shown here as an L-shaped piece or" electrical bus bar ailixed to another conductor bar 11 by screws 12. Of course, the terminal member 10 could be merely formed at the end of the bar ll or could take other convenient shapes. A plurality of openings 13 is provided in the terminal member 1'8 for receiving the electrical cables which are to be connected to the terminal member. Any number of openings may be utilized.
A sliding member 16 is positioned over the terminal member and 1.1 C1Ud35 arms 17, 13 on either side of the terminal member with openings l9, 29 therein, respectively, corresponding to the openings 13 in the terminal member. The sliding member 16 may be made in one piece, normally U-shaped, but preferably is made of two arm units corresponding to the arms 17 l8, and a nut 21 which is joined to the arm units. The nut may be a cruciform shape as seen in FIG. 5, with bosses 22, 23 project ing through corresponding openings 24, 25 m the arms 17, 1 .8. The nut 21 and arms 17, Iii-3 may be joined by various conventional means, as by peening over the ends of the bosses as seen in FIG. 2.
A screw 28 is positioned in a threaded opening in the nut 21 and preferably has a rounded end for engaging an end of the terminal member. A retainer 29 may be provided in the connector for retaining the terminal member and sliding member together prior to the clamping of a cable therein. A pr ierred form of the retainer is best seen in FIG. 6 and includes a first yoke 30 enclosing the nut 21 and a second yoke 31 engaging a wedge-shaped end 32 of the terminal member ll), the yoltes 3t), 31 being joined together as by spot welding. A clearance opening 33 is provided in the upper end of the retainer for the screw 23. When a retainer of the form shown herein is utilized, the screw 23 actually engages the retainer but the force is transmitted directly to the end of the terminal member.
In use, the cable connector of the invention may be fixed to a bus bar in a terminal box or the like as shown in FIG. 1. The screw 28 is adjusted to bring the cablereceiving openings of the arms of the sliding member into alignment with the cable-receiving openings of the terminal member, as best seen in FIG. 4. Cables 49, 41 are inserted into the sets of aligned openings as seen in FIG. 2. In the particular example illustrated herein, two cables having over-all conductor diameters in the order of threequarters of an inch are being used. Normally cables of this size will comprise a plurality of strands of smaller conductors, but of course the connector could be used with solid cables. After the cables are positioned in the connector, the screw 28 is rotated to move the sliding member upward with respect to Le terminal member for clamping the cables in the aligned openings, as seen in FIG. 6. While described herein as a device for connecting cables to a bus bar or the like, the connector is equally applicable for interconnecting two or more cables.
The cable connector operat s to provide a very strong mechanical clamping force on each of the plurality of cables clamped therein. The connector also provides equalization of clamping forces on each of the cables while requiring operation of only a single screw. The highly desirable objectives of the invention are thus accomplished.
Although an exemplary embodiment of the invention I claim as my invention: 1. In a connector for electrical cables, the combination a bar-shaped terminal member having a plurality of cable-receiving openings therethrough adjacent a Wedge-shaped end thereof with the axes of said openings parallel;
a U-shaped sliding member positioned over said terminal member with the bight of said U at said end of said terminal member, with the arms of said sliding member having aligned cable-receiving openings therethrough and alignable with cable-receiving openings of said terminal member to provide a plurality of sets of aligned openings, said sliding member comprising first and second arm units and a nut unit positioned between said arm units and having end portions engaging mating openings in said arm units; a retainer having a first yoke enclosing a portion of said nut and a second yoke enclosing said Wedge-shaped end for retaining said members together; and a screw carried in a threaded opening in said nut unit for applying a force on said end of said terminal member for moving said sliding member relative to said terminal member and clamping a cable in each of the sets of aligned openings.
2. In a connector for electrical cables, the combination a terminal member having a plurality of cable-receiving openings therethrough adjacent an end thereof with the axes of said openings parallel;
a U-shaped sliding member positioned over said terminal member with the bight of said U at said end of said terminal member, With the arms of said sliding member having aligned cable-receiving openings therethrough and alignable with cable-receiving openings of said terminal member to provide a plurality of sets of aligned openings, said sliding member comprising first and second arm units and a nut unit positioned between said arm units and having end portions engaging mating openings in said arm units;
a retainer coupled to said nut and to said terminal member for retaining said members together; and
a screw carried in a threaded opening in said nut unit for applying a force on said end of said terminal member for moving said sliding member relative to said terminal member and clamping a cable in each of the sets of aligned openings.
References Cited in the file of this patent UNITED STATES PATENTS 2,154,689 Matthews et al Apr. 18, 1939 2,329,998 Meyer Sept. 21, 1943 2,654,815 Laverty Oct. 6, 1953 2,738,479 Gibson Mar. 13, 1956 2,877,443 Bonnett et a1 Mar. 10, 1959 2,949,597 Nerlich Aug. 16, 1960 2,967,290 Zeller Jan. 3, 1961 3,020,514 Butler Feb. 6, 1962 FOREIGN PATENTS 888,909 France Sept. 20, 1943

Claims (1)

  1. 2. IN A CONNECTOR FOR ELECTRICAL CABLES, THE COMBINATION OF: A TERMINAL MEMBER HAVING A PLURALITY OF CABLE-RECEIVING OPENINGS THERETHROUGH ADJACENT AN END THEREOF WITH THE AXES OF SAID OPENINGS PARALLEL; A U-SHAPED SLIDING MEMBER POSITIONED OVER SAID TERMINAL MEMBER WITH THE BIGHT OF SAID U AT SAID END OF SAID TERMINAL MEMBER, WITH THE ARMS OF SAID SLIDING MEMBER HAVING ALIGNED CABLE-RECEIVING OPENINGS THERETHROUGH AND ALIGNABLE WITH CABLE-RECEIVING OPENINGS OF SAID TERMINAL MEMBER TO PROVIDE A PLURALITY OF SETS OF ALIGNED OPENINGS, SAID SLIDING MEMBER COMPRISING FIRST AND SECOND ARM UNITS AND A NUT UNIT POSITIONED BETWEEN SAID ARM UNITS AND HAVING END PORTIONS ENGAGING MATING OPENINGS IN SAID ARM UNITS; A RETAINER COUPLED TO SAID NUT AND TO SAID TERMINAL MEMBER FOR RETAINING SAID MEMBERS TOGETHER; AND A SCREW CARRIED IN A THREADED OPENING IN SAID NUT UNIT FOR APPLYING A FORCE ON SAID END OF SAID TERMINAL MEMBER FOR MOVING SAID SLIDING MEMBER RELATIVE TO SAID TERMINAL MEMBER AND CLAMPING A CABLE IN EACH OF THE SETS OF ALIGNED OPENINGS.
US185728A 1962-04-06 1962-04-06 Cable connector Expired - Lifetime US3129996A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829825A (en) * 1971-02-08 1974-08-13 Aluminum Co Of America Tension connector assembly for cable and the like
US6221447B1 (en) * 1996-11-18 2001-04-24 Charles S. Munn Rubber products that shrink due to the application of energy and hypo-allergenic rubbery products

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154689A (en) * 1936-02-10 1939-04-18 Matthews W N Corp Wire terminal
US2329998A (en) * 1942-10-06 1943-09-21 Wheaton Brass Works Cable connector
FR888909A (en) * 1942-08-11 1943-12-27 Improvements made to devices or components for clamping and connecting cables, wires, such as terminals, thimbles, fittings
US2654815A (en) * 1948-12-27 1953-10-06 Murray Mfg Corp Electric circuit interrupter
US2738479A (en) * 1951-10-04 1956-03-13 Warren H Kintzinger Plural wire stripper and electrical connector
US2877443A (en) * 1954-01-18 1959-03-10 Duncan Electric Co Inc Separable connector clamp
US2949597A (en) * 1955-05-25 1960-08-16 Siemens Ag Electric terminal connector
US2967290A (en) * 1958-01-27 1961-01-03 Square D Co Terminal connector
US3020514A (en) * 1960-12-16 1962-02-06 Gen Electric Wire connector clamp

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154689A (en) * 1936-02-10 1939-04-18 Matthews W N Corp Wire terminal
FR888909A (en) * 1942-08-11 1943-12-27 Improvements made to devices or components for clamping and connecting cables, wires, such as terminals, thimbles, fittings
US2329998A (en) * 1942-10-06 1943-09-21 Wheaton Brass Works Cable connector
US2654815A (en) * 1948-12-27 1953-10-06 Murray Mfg Corp Electric circuit interrupter
US2738479A (en) * 1951-10-04 1956-03-13 Warren H Kintzinger Plural wire stripper and electrical connector
US2877443A (en) * 1954-01-18 1959-03-10 Duncan Electric Co Inc Separable connector clamp
US2949597A (en) * 1955-05-25 1960-08-16 Siemens Ag Electric terminal connector
US2967290A (en) * 1958-01-27 1961-01-03 Square D Co Terminal connector
US3020514A (en) * 1960-12-16 1962-02-06 Gen Electric Wire connector clamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829825A (en) * 1971-02-08 1974-08-13 Aluminum Co Of America Tension connector assembly for cable and the like
US6221447B1 (en) * 1996-11-18 2001-04-24 Charles S. Munn Rubber products that shrink due to the application of energy and hypo-allergenic rubbery products
US6946172B2 (en) 1996-11-18 2005-09-20 Charles S. Munn Rubbery products that shrink due to the application of energy and hypo-allergic rubbery products

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