US 3909099 A
An electrical connector with a cable clamp which is movably secured with respect to the connector. The cable clamp is free to pivotally move in a plane containing longitudinal axes of the cable and the terminal portion of the electrical connector, but is restrained from movement in a direction along the longitudinal axes thereof.
Description (OCR text may contain errors)
United States Patent Winkler Sept. 30, 1975  ELECTRICAL CONNECTOR WITH 3,091,746 5/1963 Winkler 339/47 R MOVABLY MOUNTED CABLE CLAMP 3,836,938 9/1974 Barrett (it ill 339/49 R X  Inventor: Edward D. Winkler, Reading, Mass.
Primary E.\'aminer.loseph H. McGlynn  Assignee: Anderson Power Products, Inc., Assistant R. Feinberg Boston Mass Attorney, Agent, or FirmRichard J. Birch  Filed: June 14, 1974 Appl. No; 479,417
U.S. Cl. 339/47 R; 339/103 C Int. Cl. HOlR 25/00; HOlR 13/58 Field of Search 339/4749,
References Cited UNITED STATES PATENTS 5/1959 Fox 339/lO3.M
 ABSTRACT An electrical connector with a cable clamp which is movably secured with respect to the connector. The cable clamp is free to pivotally move in a plane containing longitudinal axes of the cable and the terminal portion of the electrical connector, but is restrained from movement in a direction along the longitudinal axes thereof.
4 Claims, 5 Drawing Figures US. Patent Sept. 30,1975 3,909,699
1... ELECTRICAL- CONNECTOR WITH MOYAB'LY MOUNTED CABLE CLAMP BACKGROUND, OFTIHE INVENTION The present invention relates to electrical connectors and cable clamps'ingeneral and, more particularly, to an electrical connector and cable'sc'lamp which are movable with respect to each other. 1
Cable clamps for rigidly securing a cable with respect to an electrical connector-are well known in' the art. Single and plural poled, genderless electrical connectors are also well known the 'art. Representative examples of such connectors are shown in U.S. Pat. Nos. 3,091,746; 3,2 l 8,599;e-'3,259,870; 3,654,586 and 3,794,957. Currently available genderless connectors include those manufactured and sold by Anderson Power Products, lnc., 145 Newton Street, Boston, Mass. 02135, under the United States Registered Trademarks SBQa nd POWERPOLE.
The above-mentioned genderless electrical" connectors employla rigid terminal member. which is positionedwithin .a hollow insulated housing and carried in detachedrelation to thewallsof the housing S'uitable spring-biasing means are provided to spring load the terminal member. A nplectrical cable is mechanically and electrically securedto the terminal member, such as, by crimping and/or soldering..
The use of solder-provides a goodelectricalconnection between the terminal and cable. However, in certain instances-solder is fiwicked up the cable beyond the terminal itself. The solderforms a rigid extension of the terminal. If a fixed cable clamp is used with such a solder wicked cable, the clamp forces the terminal member against the biasing spring thereby decreasing the spring-loading of the terminal member. The effect of the decreased spring-loading is to produce a high resistance electrical connection when the electrical connector is mated with another connector. The resulting I R loss can be sufficient to ruin the terminal.
It is accordingly a general object of the present invention to provide an improved cable clamp, cable and electrical connector combination.
It is a specific object of the invention to provide such a combination in which the cable clamp is free to move in certain directions, but is fixed with respect to the electrical connector to prevent movement of the cable in a direction along the longitudinal axes of the terminal member and the cable.
These objects and other objects are features of the invention which will be best understood from a detailed description of a preferred embodiment itself, selected for purposes of illustration and shown in the accompanying drawings in which:
FIG. 1 is a view in perspective of two genderless electrical connectors, one of which is partially broken away, and of their associated electrical cables and cable clamps;
FIG. 2 is a view in side elevation adn partial sectio showing the interrelationships of the electrical connector housing, rigid terminal member, cable and cable clamps;
FIG. 3 is a view similar to that shown in FIG. 2 illus-' trating the pivotal movement of the terminal member,
cable and cable clamp when the connector is inserted FIG. 5 is a view inpartial section showing a cable clamp'for clamping a'single cable.
' Turningriow to'the drawings, there is shown a pair of conventional genderless; electrical connectors indicated generally by'the reference numerals l0 and 12. Each connector has a hollow insulated housing 14 within which is positioned at least one terminal member 16'which is carried indetached relation to the walls 18 of the connector housing l4.'The rigid terminal member 16 is spring biased by means of a spring 20 in an upwardly direction, as viewed in FIGS. 1, 2 and 3.
An'elec'trijcal cable 22 is mechanically and electrically secured to'th'e rigid terminal member 16 by 'conventional means,such as, by-crimping'and/or soldering. The electrical cable 22 is held with-respect to the connector hotisin'g 1*4'by means'of a clamping assembly indicated generally b y the'r'eferen'ce numeral 24. The clamping assembly 24 comprises a T-shaped clamping member 26 which hasfan upwardly extending finger element 28, a removable clamping member 30 and means 132m securing the T-shape'd and'remo'vable eiihp ng members together. The securing means c'omprises a conventional thre aded screw 34 and nut 361' Looking specif cally at FIGS.'2 and 3, the upwardly extending fingerelement 28 of the fixed clamp 26 is po sitioned within a receptacle 38 formed in the insulated housing 14, The axis 'o f the finger element is substantiallyinormal to'the longitudinal axes of the terminal member 16 and the cable 22., FIG. 2 illustrates theconditionof the combination rigid terrninal 16, electrical Cable 22 and clamping means of 32 in a rest or unconnected position. FIG. 3 illustrates thepiv o tal movement of the rigid terminal, electrical cable and clamping means combination when the electrical connector is inserted into another genderless electrical connector. The downward movement of the contact portion of the rigid terminal member 16 produces an upward movement of the cable 22 and clamping means 32 as shown by the arrows.
It will be appreciated from an inspection of FIGS. 1, 2 and 3 that the combination of the rigid terminal 16,
electrical cable 22 and clamping means 32 is free to move within a plane containing the longitudinal axes of the terminal member 16 and cable 22. However, the combination is constrained from movement in a direction along the longitudinal axes of the terminal member and electrical cable. This arrangement permits the desired degree of movement of the electrical cable 22 with respect to the connector housing 14 while at the same time preventing removal of a cable and terminal member from the housing.
FIG. 4 illustrates in partial section the clamping means 32 for a double cable assembly as shown in FIG. 1. FIG. 5 illustrates an alternative embodiment for use with a single cable. In the alternative embodiment a threaded removable clamping member 40 is employed in conjunction with the previously mentioned T-shaped clamping member 26 to hold the cable 22.
Having described in detail a preferred embodiment of my invention, it will now be apparent to those skilled in the art that numerous modifications can be made therein without departing from the scope of the appended claims.
What I claim and desire to secure by Letters Patent of the United States is:
1. In combination,
A. An electric connector comprising:
l. a hollow insulated housing means;
2. at least one rigid terminal member positioned within the housing means and carried in detached relation to thewalls thereof; and,
3. means for spring-biasing said rigid terminal member;
B. An electrical cable mechanically and electrically secured to said rigid terminal member; and,
C, Cable clamping means for clamping said electrical cable, said cable clamping means, being secured with respect to said electrical connector housing means to permit (i) pivotal movement of said ter minal member and electrical cable within a plane containing the longitudinal axes thereof while preventing movement of said terminal member and electrical cable in a direction along the longitudinal axes thereof and (ii) movement of said terminal member and electrical cable within a plane containing the longitudinal and transverse axes thereof.
2. The combination of claim 1 wherein said clamping means includes a finger element whichis positioned within a receptacle formed in said housing means with the axis of said finger element being substantially normal to the longitudinal axes of the terminal member and electrical cable.
7 3. The combination of claim 1 wherein said clamping means comprises: a T-shaped clamping member having 7 clamped relationship with said electrical cable clamped there-between.
4. In combination,
A A plural-pole, genderless electrical connector comprising:
1. A hollow insulated housing means;
2. first and second rigid terminal members positioned within said housing means and carried in detached relation tothe walls thereof, said first and second rigid terminal members being adapted for telescopic engagementwith corre- .sponding firstand second rigid terminal members of a duplicate genderless electrical connector; and,
3. means for spring-biasing said first and second rigid terminal members;
B. First and second electrical cables mechanically and electrically secured to said first and second rigid terminal members, respectively; and,
C. Cable, clamping means for clamping said first and second electrical cables, said clamping means being secured with respect to said electrical connector housing means to permit (i) pivotal movement of each of said terminal members and its re spective electrical cable within a plane containing the longitudinal axes thereof while preventing movement of said terminal member and electrical cable in a direction along'the longitudinal axes thereof and (ii) movement of said terminal member and electrical cable within a plane containing the longitudinal and transverse axes thereof.