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Publication numberUS3126242 A
Publication typeGrant
Publication dateMar 24, 1964
Filing dateDec 21, 1959
Publication numberUS 3126242 A, US 3126242A, US-A-3126242, US3126242 A, US3126242A
InventorsWilliam P. Merniaa
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Molded female connector
US 3126242 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

March 24, 1964 w. P. HERMAN 3,126,242

MOLDED FEMALE CONNECTOR Filed Dec. 21, 1959 INVENTOR. WILLIAM R HERMAN ATTORNEY United States Patent 3,125,242 MGLDED FEMALE QQNNEQTGR William P. Herman, Providence, 11.1., assignor, by mesne assignments, to North American Philips Company, inc New York, N.Y., a corporation of Delaware Filed Dec. 21, 1959, Ser. No. 869,766 1 tilaim. ((31. 339-62) My present invention relates to electrical connectors and more particularly to a novel molded female connector.

The principal object of the present invention is to provide a novel female connector in which the blades are molded into the connector body.

Another object of the present invention is to provide a female connector having a novel blade construction designed for a molded plug body.

A further object of the present invention is to provide a novel female connector in which the blades are furnished in strip form for ready assembly with the electrical cord connection.

With the above and other objects and advantageous features in view, my invention consists of a novel arrangement of parts more fully disclosed in the detailed description following in conjunction with the accompanying drawings and more particularly defined in the appended claim.

In the drawings,

FIG. 1 is a perspective view of a female connector embodying my invention.

FIG. 2 is a vertical section thereof.

FIG. 3 is a section taken on line 3-3 on FIG. 2.

FIG. 4 is a section taken on line 4-4 on FIG. 2.

FIG. 5 is a perspective View of a portion of a strip of contact blades.

FIG. 6 is a perspective view of a pair of contact blades assembled to the cord lead wires.

In the manufacture of electrical connectors of the molded type, a pair of contact blades are attached to the ends of the cord lead wires by soldering or crimping and the plug body is then molded around the cord lead connection and the portion of the blade within the plug body. This assembly is fairly simple in a male plug which is solid. However, in molding female type plugs provision must be made for the slot into which the male blades are pushed. This complicates the molding operation since the mold material, whether rubber or plastic has a tendency to run into the slot around the inserts forming the slot and holding the blade. The present invention is designed to provide a novel blade construction which permits the mold insert to hold the blade in proper position while at the same time providing a clean slot directly adjacent to the blade for forming the female connector.

Referring more in detail to the drawings, the female connector of the present invention comprises a plug husk or body 10 of molded resilient material such as rubber or plastic having a pair of slots 11 extending from the bottom end. A cord lead connection 12 enters the plug body from the top with the bare ends electrically connected to the contact blades and embedded in the plug body 10 as shown in FIG. 2.

The contact blades of the present invention are preferably manufactured in strip form so that their assembly with the cord lead wires can be facilitated on a semiautomatic machine. Referring to FIG. 5, the strip of blades 13 is formed with the blades transversely of the strip. Each blade comprises an elongated flat lower portion 14 reentrantly bent at an acute angle at the bottom end 15. A slot 16 is provided at the bend for the purpose of locking with a core pin for holding the blade in the plug mold and for forming the slots 11. At the center each blade is preferably provided with a detent 17 which extends into each slot 11 as shown in FIG. 4 for better electrical contact with the male contact pins inserted in the slots. The upper end of each blade is tapered at 18 with the outer end provided with lugs 19 at each edge for engaging the bare cord lead connections 12. The individual blades are connected in strip form by integral connecting portions 26*.

In forming the plug, the blades are first attached to the cord lead connections 12 as shown in FIG. 6. This is done on a crimping press which cuts the connecting portions 29 from the blades and closes the lugs 19 around the cord lead connections. The core pin is then inserted so that it locks with the slot 16 and extends along the outer surface of each blade to form the slots 11 as shown in FIG. 2. The upper end of each blade, at the lugs 19, are bent inwardly before molding. After molding it will be found that the lower bent ends 15 are embedded in the plug body and the upper ends with the lugs 19 and cord lead connections together with the insulation on the cord lead connections are also embedded in the plug body. This fixes the position of the blades with respect to the slots 11 so they will not move or be dislodged during use. The detents 17 help to hold the male contact elements since they form restricted slot portions.

With the above construction the blades are of minimum length for the length of the slot as required by the Underwriters Laboratories and yet are provided with sufficient anchoring means for holding them rigidly in position. The plug can thus be manufactured easily and rapidly with a minimum of cost and a minimum of Waste material. Other advantages of the present invention will be readily apparent to a person skilled in the art.

I claim:

A molded female connector comprising a one piece body of molded resilient dielectric material having a pair of slots terminating within said body and adapted to receive a pair of male contact pins, .a pair of contact blades within said body, each said contact blade having an elongated rectangular central portion coextensive with a substantial portion of the inner wall of the associated slot, each said contact blade having a reentrant bend at one end, said bend forming an acute angle with said central portion, an opening in said reentrant bend extending partly into said central portion for accurately securing and locating said blade during the molding operation forming said connector body having said slots, the reentrant portion of said bend being embedded in said body member adjacent the longitudinal center line thereof and extending rearwardly of said body member for anchoring each said contact blade within said body member, the other end of each said blade having a pair of opposed triangularly shaped offset lugs adapted to be bent over the lead wire of a conductor, said central portion of each said blade having a reduced section adjacent said lugs and a detent on said central portion extending into said slot at the innermost end thereof, said reduced section being bent inwardly toward the longitudinal axis of said body member, said reduced portion and said lugs being embedded in said body member for further anchoring each said contact blade within said body member.

References Cited in the file of this patent UNITED STATES PATENTS 1,747,896 Gates Feb. 18, 1930 2,308,324 Benander Ian. 12, 1943 2,318,485 Herman May 4, 1943 2,329,464 Gaynor Sept. 14, 1943 2,669,701 Brus Feb. 16, 1954 2,814,789 Herman et a1. Nov. 26, 1957 2,869,093 Benander Jan. 13, 1959 2,871,551 Harris Feb. 3, 1959 2,891,304 Colvin June 23, 1959

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1747896 *Dec 6, 1926Feb 18, 1930Arrow Hart & Hegeman ElectricContact socket
US2308324 *Jul 10, 1940Jan 12, 1943Monowatt Electric CorpElectrical connector and method of manufacturing the same
US2318485 *Mar 8, 1941May 4, 1943Herman William PFemale connector
US2329464 *Oct 15, 1941Sep 14, 1943Gaynor Edwin GOne piece resilient bodied fluorescent lamp socket
US2669701 *Oct 9, 1950Feb 16, 1954Brus Emile PElectrical plug with compressible means to retain contacts therein
US2814789 *Oct 4, 1955Nov 26, 1957Herman William PFemale connector
US2869093 *Apr 25, 1956Jan 13, 1959Gen ElectricCurrent tap
US2871551 *Oct 19, 1955Feb 3, 1959Malco Tool & Mfg CoChain of combined terminal and support members for electrical elements
US2891304 *Jun 14, 1956Jun 23, 1959Rca CorpElectrode blanks
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3282657 *May 8, 1963Nov 1, 1966Bright Mfg Co LtdClip for straddling and gripping a supporting flange and blank therefor
US3309178 *Feb 12, 1964Mar 14, 1967Heyman Mfg CompanyWide crimp blade
US3388976 *Oct 22, 1965Jun 18, 1968Cable Electric Products IncFemale molded-on electrical connector
US3733695 *Oct 26, 1971May 22, 1973Bourns IncMethod of making potentiometer terminations
US5476396 *Jun 24, 1994Dec 19, 1995No Jack CorporationAutomotive blade type fuse block terminal adapter
US5882229 *Dec 13, 1996Mar 16, 1999Magnadyne CorporationFuse tap
US6004160 *Mar 25, 1997Dec 21, 1999The Whitaker CorporationElectrical connector with insert molded housing
US7413488 *Feb 2, 2005Aug 19, 2008Yazaki CorporationWire end terminal and method of producing same
US7532102Sep 21, 2006May 12, 2009K.S. Terminals, Inc.Fuse cap for a blade fuse
US8424409Jun 29, 2009Apr 23, 2013Ghsp, Inc.Shifter with one-touch assembly
CN101055942BApr 13, 2006May 12, 2010健和兴端子股份有限公司Connector and its making method
WO1996000456A1 *Jun 27, 1994Jan 4, 1996No Jack CorpAutomotive blade type fuse block terminal adapter
U.S. Classification439/682, 439/736, 29/883
International ClassificationH01R13/50
Cooperative ClassificationH01R24/20, H01R2103/00
European ClassificationH01R24/20