US3611255A - Moisture resistant electrical connector - Google Patents

Moisture resistant electrical connector Download PDF

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US3611255A
US3611255A US3611255DA US3611255A US 3611255 A US3611255 A US 3611255A US 3611255D A US3611255D A US 3611255DA US 3611255 A US3611255 A US 3611255A
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member
members
connector
provided
portion
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Larry L Shroyer
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Lyall Electric Inc
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Lyall Electric Inc
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/50Bases; Cases formed as an integral body

Abstract

A moisture resistant electrical connector of partially conventional design but having improved moisture resistant characteristics is disclosed. The connector comprises first and second members having male and female electrical connectors disposed therein, one of said members having a forwardly extending surrounding portion which conforms to the lateral exterior of the other member and which serves to protect the connector from dirt and moisture as well as to improve the mechanical connection between the two members.

Description

United States Patent Inventor Larry L. Shroyer Kendlllvllle, Ind.

Appl. No. 878,020

Filed Nov. 19, I969 Patented Oct. 5, 1971 Asslgnee Lynll Electric, Inc.

Alhlon, Ind.

MOISTURE RESISTANT ELECTRICAL CONNECTOR 5 Claims, 3 Drawing Figs.

us. 01 339/60 11, 339/75 P 1m. 01 non 13/52,

HOlr 13/54 Field of Search V 339/59-61, 75, 91

[56] References Cited UNITED STATES PATENTS 3,124,405 3/l964 Massa 339/60 R 3,266,007 8/]966 Sullivan 339/6l FOREIGN PATENTS l,l 11,347 4/1968 Great Britain 339/6l R Primary Examiner-Joseph H. McGlynn Attorney-Jeffers and Riekert ABSTRACT: A moisture resistant electrical connector of partially conventional design but having improved moisture resistant characteristics is disclosed. The connector comprises first and second members having male and female electrical connectors disposed therein, one of said members having a forwardly extending surrounding portion which conforms to the lateral exterior of the other member and which serves to protect the connector from dirt and moisture as well as to improve the mechanical connection between the two members.

PATENTEI] mm s Ian INVENTOR LARRY 1.. SHROYER BYMAoML w ATTORNEYS MOISTURE RESISTANT ELECTRICAL CONNECTOR BACKGROUND OF THE INVENTION The prior art electrical connectors and their defects may be most readily understood by considering a standard home extension cord type of connector. These connectors typically consist of two members one of which is provided with a pair of male connectors the other of which is provided with a pair of corresponding female electrical connectors. When the two halves of the prior art connector are mated there is a slight gap between the two members'which will allow moisture, dirt or even a paper clip to get in between the two abutting surfaces and short out the two conductors. The effectiveness of the mechanical connection between these prior art connectors is quite variable, some being almost impossible to separate while others will unplug or disconnect due to the weight of the connector and cord alone.

SUMMARY OF THE INVENTION The present invention overcomes the above noted prior art defects by providing an electrical connector having first and second members and corresponding male and female connectors disposed therein and additionally having a forwardly extending surrounding portion which conforms to the lateral exterior surface of the other member and serves to protect the connector from dirt, moisture, and other foreign matter as well as improving the mechanical connection between the two members.

Accordingly, it is one object of the present invention to provide an electrical connector having improved moisture resistant characteristics.

It is another object of the present invention to provide an improved electrical connector.

It is a further object of the present invention to provide an electrical connector which is not subject to dirt, moisture, and other contamination from the environment.

It is yet another object of the present invention to provide a connector having improved mechanical or strain relief proper- I ties.

According to the teachings of the present invention one-half of the present connector is supplied with a series of ridges and grooves or corrugations and the other half of the connector has on the interior of its forwardly extending surroundingportion a corresponding series of ridges and grooves which, when the two halves of the connector aremated, intermesh so as to enhance the moisture resistant, as well as the mechanical connection aspects of the present invention.

Accordingly, it is a still further object of the present invention to provide an electrical connector with a forwardly extending portion which portion securely grips the lateral sides of its mating connector half.

These and other objects and advantages of the present invention will appear more clearly from the following detailed disclosure of a preferred embodiment read in conjunction with the accompanying drawing in which:

BRIEF DESCRIPTION OF THE DRAWING FIG. I is a perspective view of two electrical connector members;

FIG. 2 is a cross-sectional view of the connector members of FIG. 1; and

FIG. 3 is a cross-sectional view showing the two members properly connected together.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring first to FIG. 1, the moisture-resistant electrical connector of the present invention is seen to comprise a first member 11 and a second member 13, the first member being provided with a pair of male electrical connectors or conductors and 17 and thesecond member being provided with a second pair of female electrical connectors of conductors l9 and 21 which are visible only in FIGS. 2 and 3. The connector of course has wires 23 and 25 of the same number of conductors as the corresponding male and female electrical connectors. The wires 23 and 25 may be permanently sealed to the members 11 and 13 as for example by an integral rubber molding process. The male connectors 15 and 17 may have any desired configuration and any reasonable number of conductors may be used from a single conductor to a multiconductor cable so long as the corresponding or mating female portions 19 and 21 are correspondingly disposed so that the one member may be plugged into the second member.

The most salient feature of the present invention is the provision of a surrounded portion 27 having a series of ridges 29 and grooves 31 and adapted to be encompassed by the surrounding portion 33 of the other member. The surrounding portion 33 is provided with a corresponding series of internal annular grooves 35 and protuberances 37 as more clearly seen in FIG. 2. In the preferred embodiment shown, the member 11 having the surrounding portion or sleeve 33 is the member provided with the male contacts 15 and 17 and this fonn is preferred in that it alfords more protection for the electrical parts of the two members when the connector is disconnected, however, it should be clear that the female connectors 19 and 21 could be made to reside in the member 11 with the male connectors 15 and 17 being switched over to the member 13. It should also be clear that the surrounded portion 27 may be corrugated or contoured in any desired configuration so long as the surrounding portion 33 is correspondingly contoured so that when the two members are fitted together a tight seal is achieved.

The specific configuration of the mating surfaces of the exterior lateral surface of the encompassed portion of the twopiece connector and the interior of the encompassing portion is most easily seen in reference to FIG. 2. The encompassed portion 13 has a series of annular protuberances 29 which in cross section are in a right triangular configuration. The leading portion of this right triangular cross section is sloped so as to allow the two portions to be readily pushed together while the backside of this right triangular cross section is essentially perpendicular to the axis of the connector pair so that the two members do not part easily. Similarly, the annular protuberances interior to the encompassing portion are again of right triangular cross section with the leading edge sloped so as to allow ready connection of the connector halves while the rear portion is essentially perpendicular to the axis of the connector pair so that the pair does not separate readily. While it is clear that these protuberances could be of any desired cross section and that one member might be provided entirely with the raised portions or ridges while the other was provided entirely with grooved or trough portions the groove and trough configuration of triangular cross section as shown in FIG. 2 is the preferred form. The triangular cross section and spacing of these corrugations is such that when the two members are assembled the protuberances of one member intermesh with the grooves of the other member to form an extremely good seal both to moisture and to prevent separation of the connector as illustrated in FIG. 3.

Turning now to FIG. 3 which shows the two members mated or interlocked with the corresponding male and female conductors also interlocked, it should be clear that the electrical connector when assembled defines an interior portion which contains the connectors 15, 17, 19 and 21 and an exterior portion which is exposed to the ambient environment outside the connector. As thus assembled we see that there is a path by which moisture or other contaminants might travel from the environment exterior to the connector along this path to the interior portion where it might contaminate or otherwise short out the conductors. It should be clear that the length of this path which the contaminant must transverse has been substantially increased and made more tortuous than that of the standard extension cord connector as discussed earlier. FIG. 3 also graphically illustrates how the protuberances and corresponding annular grooves intermesh to form both a good seal and a tight mechanical fit between two members of the connector.

The protuberances and corresponding annular grooves are both of a 30-60 right triangle cross section although other cross sections are possible and within the scope of the present invention. When joining the two components of the connector, the 30 or gently sloped portion of the protuberances and grooves slide rather readily over one another, but when attempting to disengage the two components, the perpendicular portions lock together rather tightly and the protuberances and grooves must be somewhat distorted and in one specific embodiment of the present invention approximately 40 pounds of pull was required to disengage to two components. Thus, the present invention provides substantial strain relief to connectors of this type as well as providing moisture-resistant characteristics.

The moisture-resistant properties as well as the strain relief properties of the electrical connector of the present invention may be yet further enhanced by providing a snap ring 41 as shown in FIG. 1 which when in position serves to compress the surrounding portion 33 so as to force the annular rings and grooves into closer contact. Thus, the connector of the present invention is provided with an exterior annular groove 39 adapted to accept this snap ring 41 or any equivalent structure. An equivalent structure might, for example, be to insert the present connector in a panel much as a normal grommet would be inserted in a panel.

Thus while the present invention has been described in reference to a specific embodiment numerous modifications will suggest themselves to persons of ordinary skill in the art and the scope of the present invention is to be measured only by that of the appended claims.

I. A moisture-resistant electrical connector comprising:

a first member having a first axis and having at least one male conductor extending from said member in the direction of said first axis;

a second member having a second axis and having at least one female conductor extending inside said second member in the direction of said second axis, said first and second members adapted to be interconnected by relative axial motion to establish electrical connection between the male and female conductors;

one of said first and second members being provided with a surrounded portion of generally cylindrical configuration and the other of said first and second members being provided with an annular surrounding portion of generally cylindrical configuration wherein when said members are interconnected said surrounded portion is surrounded by said surrounding portion and said first and second axes are colinear;

one of said surrounded and said surrounding portions being provided with at least one annular protuberance having a triangular cross-sectional configuration with a gently sloped leading portion and an abruptly sloped backside and the other of said surrounding and said surrounded portions being provided with at least one corresponding annular groove of mating triangular cross-sectional configuration, said gently sloped leading portion allowing said members to be readily interconnected and said abruptly sloped backside holding said members in their interconnected position, said surrounding portion having an exterior annular groove; and

means removably engaging said exterior annular groove for compressing said surrounding portion to thereby further enhance the moisture-resistant characteristics of the electrical connector.

2. The connector of claim 1 wherein each said triangular cross-sectional configuration is substantially a 30-60 right triangle, said backside being substantially perpendicular to the corresponding member axis and said gently sloped leading portion forming substantially a 30 angle with the corresponding member axis.

3. The connector of claim 1 wherein said first member is provided with three male conductors each extending from said member in the direction of said first axis and said second member IS provided with three female conductors each extending inside said second member in the direction of said second axis, said male conductors and said female conductors being correspondingly disposed so as to allow pairwise inter connection when said first and second members are interconnected.

4. The connector of claim 1 wherein said second member is the member provided with said surrounded portion and said first member is the member provided with said surrounding portion.

5. The connector of claim 1 wherein both said surrounded and said surrounding portions are provided with alternate annular protuberances and annular grooves of mating triangular cross-sectional configuration.

Claims (5)

1. A moisture-resistant electrical connector comprising: a first member having a first axis and having at least one male conductor extending from said member in the direction of said first axis; a second member having a second axis and having at least one female conductor extending inside said second member in the direction of said second axis, said first and second members adapted to be interconnected by relative axial motion to establish electrical connection between the male and female conductors; one of said first and second members being provided with a surrounded portion of generally cylindrical configuration and the other of said first and second members being provided with an annular surrounding portion of generally cylindrical configuration wherein when said members are interconnected said surrounded portion is surrounded by said surrounding portion and said first and second axes are colinear; one of said surrounded and said surrounding portions being provided with at least one annular protuberance having a triangular cross-sectional configuration with a gently sloped leading portion and an abruptly sloped backside and the other of said surrounding and said surrounded portions being provided with at least one corresponding annular groove of mating triangular cross-sectional configuration, said gently sloped leading portion allowing said members to be readily interconnected and said abruptly sloped backside holding said members in their interconnected position, said surrounding portion having an exterior annular groove; and means removably engaging said exterior annular groove for compressing said surrounding portion to thereby further enhance the moisture-resistant characteristics of the electrical connector.
2. The connector of claim 1 wherein each said triangular cross-sectional configuration is substantially a 30*-60* right triangle, said backside being substantially perpendicular to the corresponding member axis and said gently sloped leading portion forming substantially a 30* angle with the corresponding member axis.
3. The connector of claim 1 wherein said first member is provided with three male conductors each extending from said member in the direction of said first axis and said second member is provided with three female conductors each extending inside said second member in the direction of said second axis, said male conductors and said female conductors being correspondingly disposed so as to allow pairwise interconnection when said first and second members are interconnected.
4. The connector of claim 1 wherein said second member is the member provided with said surrounded portion and said first member is the member provided with said surrounding portion.
5. The connector of claim 1 wherein both said surrounded and said surrounding portions are provided with alternate annular protuberances and annular grooves of mating triangular cross-sectional configuration.
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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725796A1 (en) * 1977-06-08 1978-12-21 Maschf Augsburg Nuernberg Ag High vacuum density socket
US4291932A (en) * 1980-03-25 1981-09-29 The United States Of America As Represented By The Secretary Of The Navy Electrical connector receptacle assembly
US4498719A (en) * 1977-12-27 1985-02-12 Allied Corporation Environmental connector assembly
US4601528A (en) * 1985-08-20 1986-07-22 Spier Martin I Hermetic self-locking electrical connector
US4609247A (en) * 1983-07-11 1986-09-02 Houston Geophysical Products, Inc. Connector having two seal-rings of different diameters
US4679233A (en) * 1985-08-30 1987-07-07 Motorola, Inc. Microphone
US4886471A (en) * 1987-01-30 1989-12-12 Amp Incorporated Vacuum seal for electrical connector
US4895529A (en) * 1982-12-27 1990-01-23 Amp Incorporated Environmentally sealed connector
US4904198A (en) * 1987-09-28 1990-02-27 Rowe Industries, Inc. Vibration-proof plug and socket
US4911652A (en) * 1988-06-22 1990-03-27 J.B. Nottingham & Co. Emergency power distribution system
US5232383A (en) * 1992-10-21 1993-08-03 Barnick Robert C Medical snap connector
US5234352A (en) * 1992-11-27 1993-08-10 General Motors Corporation Lower engaged seal rib configuration
US5286213A (en) * 1993-01-27 1994-02-15 Raymond Altergott Locking receptacle
US5517392A (en) * 1994-08-05 1996-05-14 Black & Decker Inc. Sleeve retention for flexible core of a flashlight
US5863221A (en) * 1997-07-23 1999-01-26 Leviton Manufacturing Co., Inc. Insulating enclosure to provide a water-tight seal with an electric connector
US6022237A (en) * 1997-02-26 2000-02-08 John O. Esh Water-resistant electrical connector
US6036530A (en) * 1997-05-06 2000-03-14 Phillips & Temro Industries Ltd. Modular feed-through connector and mounting assembly for tank heater
US6254924B1 (en) 1996-01-04 2001-07-03 General Cable Technologies Corporation Paired electrical cable having improved transmission properties and method for making same
US6257938B1 (en) 1998-12-16 2001-07-10 Stoneridge, Inc. Databus multiplexing connection system
US6319039B1 (en) 2000-01-25 2001-11-20 U.S.A. Harness, Inc. Connector for connecting electrical conductors so that the conductors are maintained and protected in watertight contact
US6336821B1 (en) * 1999-05-26 2002-01-08 Kitani Electric Co., Ltd. Connector for use in solar generator
US6368140B2 (en) * 2000-05-31 2002-04-09 Yazaki Corporation Half-fitting prevention connector
USRE39093E1 (en) * 1993-07-13 2006-05-09 Duraline, A Division Of J.B. Nottingham Co., Inc. Mast-type outdoor lighting system
US20070060789A1 (en) * 2004-05-14 2007-03-15 Olympus Corporation Endoscope
US20070077812A1 (en) * 2005-09-26 2007-04-05 Hon Hai Precision Industry Co., Ltd. Electronic device assembly
US20070202741A1 (en) * 2004-02-09 2007-08-30 Adc Telecommunications, Inc. Protective boot and universal cap
US20100323550A1 (en) * 2009-06-18 2010-12-23 Makita Corporation Connectors for electric cords
US20100323547A1 (en) * 2007-03-16 2010-12-23 Allied Precision Industries, Inc. Cordset assembly
US20130203277A1 (en) * 2012-02-07 2013-08-08 Zachary Gaubert Electrical Connector
US9425574B2 (en) * 2012-05-11 2016-08-23 Tpc Wire & Cable Corp. Cast forming methods for making sealed conductors
US9496696B2 (en) 2014-09-04 2016-11-15 Leviton Manufacturing Co., Inc. Weather resistant flip lid cover with improved sealing arrangement
DE102016215686A1 (en) 2016-08-22 2018-02-22 Lq Mechatronik-Systeme Gmbh Connector with injection-molded insulating body and method for its production
CN107949959A (en) * 2015-08-31 2018-04-20 矢崎总业株式会社 Waterproof construction for connector
USD839194S1 (en) 2017-08-01 2019-01-29 Hydrofarm, L.L.C. Electrical connector with skirt

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124405A (en) * 1964-03-10 Underwater separable connector
US3266007A (en) * 1964-05-18 1966-08-09 Sanders Associates Inc High voltage terminal block
GB1111347A (en) * 1966-03-15 1968-04-24 Dereham Engineering Ltd Improved co-axial plug and socket coupling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124405A (en) * 1964-03-10 Underwater separable connector
US3266007A (en) * 1964-05-18 1966-08-09 Sanders Associates Inc High voltage terminal block
GB1111347A (en) * 1966-03-15 1968-04-24 Dereham Engineering Ltd Improved co-axial plug and socket coupling

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725796A1 (en) * 1977-06-08 1978-12-21 Maschf Augsburg Nuernberg Ag High vacuum density socket
US4498719A (en) * 1977-12-27 1985-02-12 Allied Corporation Environmental connector assembly
US4291932A (en) * 1980-03-25 1981-09-29 The United States Of America As Represented By The Secretary Of The Navy Electrical connector receptacle assembly
US4895529A (en) * 1982-12-27 1990-01-23 Amp Incorporated Environmentally sealed connector
US4609247A (en) * 1983-07-11 1986-09-02 Houston Geophysical Products, Inc. Connector having two seal-rings of different diameters
US4601528A (en) * 1985-08-20 1986-07-22 Spier Martin I Hermetic self-locking electrical connector
US4679233A (en) * 1985-08-30 1987-07-07 Motorola, Inc. Microphone
US4886471A (en) * 1987-01-30 1989-12-12 Amp Incorporated Vacuum seal for electrical connector
US4904198A (en) * 1987-09-28 1990-02-27 Rowe Industries, Inc. Vibration-proof plug and socket
US4911652A (en) * 1988-06-22 1990-03-27 J.B. Nottingham & Co. Emergency power distribution system
US5232383A (en) * 1992-10-21 1993-08-03 Barnick Robert C Medical snap connector
US5234352A (en) * 1992-11-27 1993-08-10 General Motors Corporation Lower engaged seal rib configuration
US5286213A (en) * 1993-01-27 1994-02-15 Raymond Altergott Locking receptacle
USRE39093E1 (en) * 1993-07-13 2006-05-09 Duraline, A Division Of J.B. Nottingham Co., Inc. Mast-type outdoor lighting system
US5517392A (en) * 1994-08-05 1996-05-14 Black & Decker Inc. Sleeve retention for flexible core of a flashlight
US6254924B1 (en) 1996-01-04 2001-07-03 General Cable Technologies Corporation Paired electrical cable having improved transmission properties and method for making same
US6022237A (en) * 1997-02-26 2000-02-08 John O. Esh Water-resistant electrical connector
US6036530A (en) * 1997-05-06 2000-03-14 Phillips & Temro Industries Ltd. Modular feed-through connector and mounting assembly for tank heater
US5863221A (en) * 1997-07-23 1999-01-26 Leviton Manufacturing Co., Inc. Insulating enclosure to provide a water-tight seal with an electric connector
US6257938B1 (en) 1998-12-16 2001-07-10 Stoneridge, Inc. Databus multiplexing connection system
US6336821B1 (en) * 1999-05-26 2002-01-08 Kitani Electric Co., Ltd. Connector for use in solar generator
US6319039B1 (en) 2000-01-25 2001-11-20 U.S.A. Harness, Inc. Connector for connecting electrical conductors so that the conductors are maintained and protected in watertight contact
US6368140B2 (en) * 2000-05-31 2002-04-09 Yazaki Corporation Half-fitting prevention connector
US20090117762A1 (en) * 2004-02-09 2009-05-07 Adc Telecommunications, Inc. Protective boot and universal cap
US7674121B2 (en) 2004-02-09 2010-03-09 Adc Telecommunications, Inc. Protective boot and universal cap
US20070202741A1 (en) * 2004-02-09 2007-08-30 Adc Telecommunications, Inc. Protective boot and universal cap
US7407412B2 (en) * 2004-02-09 2008-08-05 Adc Telecommunications, Inc. Protective boot and universal cap
US20070060789A1 (en) * 2004-05-14 2007-03-15 Olympus Corporation Endoscope
US7914443B2 (en) * 2004-05-14 2011-03-29 Olympus Corporation Endoscope with non-contact signal transmission and reception
US20070077812A1 (en) * 2005-09-26 2007-04-05 Hon Hai Precision Industry Co., Ltd. Electronic device assembly
US8182279B2 (en) * 2007-03-16 2012-05-22 Allied Precision Industries, Inc. Cordset assembly
US20100323547A1 (en) * 2007-03-16 2010-12-23 Allied Precision Industries, Inc. Cordset assembly
US20100323550A1 (en) * 2009-06-18 2010-12-23 Makita Corporation Connectors for electric cords
US8382507B2 (en) * 2009-06-18 2013-02-26 Makita Corporation Connectors for electric cords
US20130203277A1 (en) * 2012-02-07 2013-08-08 Zachary Gaubert Electrical Connector
US9425574B2 (en) * 2012-05-11 2016-08-23 Tpc Wire & Cable Corp. Cast forming methods for making sealed conductors
US9496696B2 (en) 2014-09-04 2016-11-15 Leviton Manufacturing Co., Inc. Weather resistant flip lid cover with improved sealing arrangement
CN107949959A (en) * 2015-08-31 2018-04-20 矢崎总业株式会社 Waterproof construction for connector
US10283902B2 (en) * 2015-08-31 2019-05-07 Yazaki Corporation Waterproof structure for connector
CN107949959B (en) * 2015-08-31 2019-12-10 矢崎总业株式会社 waterproof structure for connector
US20180191099A1 (en) * 2015-08-31 2018-07-05 Yazaki Corporation Waterproof structure for connector
EP3346557A4 (en) * 2015-08-31 2019-04-03 Yazaki Corporation Waterproof structure for connector
DE102016215686A1 (en) 2016-08-22 2018-02-22 Lq Mechatronik-Systeme Gmbh Connector with injection-molded insulating body and method for its production
WO2018036814A1 (en) 2016-08-22 2018-03-01 Lq Mechatronik-Systeme Gmbh Plug connector with moulded-on insulating body and method for producing same
USD839194S1 (en) 2017-08-01 2019-01-29 Hydrofarm, L.L.C. Electrical connector with skirt

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