EP0208778B1 - Detachable sealed multicontact electrical connector - Google Patents
Detachable sealed multicontact electrical connector Download PDFInfo
- Publication number
- EP0208778B1 EP0208778B1 EP19860901223 EP86901223A EP0208778B1 EP 0208778 B1 EP0208778 B1 EP 0208778B1 EP 19860901223 EP19860901223 EP 19860901223 EP 86901223 A EP86901223 A EP 86901223A EP 0208778 B1 EP0208778 B1 EP 0208778B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connector
- housing
- cavity
- inner seal
- cavities
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
- H01R13/5221—Sealing means between coupling parts, e.g. interfacial seal having cable sealing means
Definitions
- This invention relates to electrical connectors for use in establishing electrical continuity on a plurality of separate lines or circuits in a single detachable sealed multicontact electrical connector.
- U.S. Patent 4 150 866 discloses a multicontact sealed detachable electrical connector having a plurality of male and female terminals separately located in matable multicavity housings.
- the electrical connector shown therein employs seals at the outer face of both connector halves to establish sealing integrity with each round wire conductor as it enters the corresponding terminal cavity. Sealing integrity is maintained at the interface between the two connector housings by a single O-ring positioned at the mating face of the two housings. If one of the seals at the end of the housings cavities engaging the round wire conductor were to fail, sealing integrity would be lost for all of the conductors.
- U.S. Patent 3 221 292 discloses a detachable multicontact electrical connector employing a unitary grommet at each end of the connector halves to maintain sealing integrity with the wires leading into the plurality of cavities in the connector. Sealing integrity is maintained around the exterior of the connector by a peripheral O-ring seal. To the extent sealing integrity is maintained between separate lines in this connector, sealing integrity must be maintained at the faces of intermediate grommets in separate connector parts. It does not appear however that sealing integrity is to be maintained between separate lines interconnected by mating male and female terminals.
- U.S. Patent 3 697 928 also discloses a detachable multicontact electrical connector having sealing grommets at the rearward end of two connector halves for maintaining sealing integrity with the wires extending into cavities in the connector half.
- a peripheral O-ring seal is provided between the exterior of the male connector half and the encircling flange of the female connector half to establish peripheral sealing integrity.
- US-A-4 311 355 discloses a multicontact detachable sealed electrical connector for use in establishing a sealed interconnection between conductors in one or more circuits, comprising : first and second mating terminals attachable to separate conductors comprising each circuit; first and second mating connector housings formed of an insulative material, each having cavities extending from an exterior housing end therethrough to an interior housing end, each cavity having retaining means therein for attaching a corresponding terminal insertable therein to the housing, an outer seal aligned with each housing cavity and surrounding each conductor in the housing cavity at the exterior end of the housing, to establish sealing integrity between each conductor and the corresponding connector housing ; tubular protuberances on the interior end of the first connector housing defining an extension of each cavity therein, each tubular protuberance being insertable in the corresponding cavity adjacent the interior end of the second connector housing.
- the invention is characterised by an annular shoulder on the exterior of each tubular protuberance, a resilient, deflectable inner seal surrounding each tubular protuberance intermediate the ends in abutment with annular shoulder, the inner seal having an outer dimension greater than the inner diameter of the cavity in the second housing, the annular shoulder having an outer dimension less than the outer dimension of the corresponding inner seal, the inner seal engaging the second connector housing at the inner end when the first and second connector housings are mated, whereby terminals interconnecting corresponding conductors forming each circuit are separately sealed, an annular recess having an outer dimension greater than the inner diameter of the cavities in the second housing extending around each cavity at the interior second housing end, each inner seal being only partially insertable in each corresponding recess, each inner seal being deflectable around the exterior of the corresponding annular shoulder, sealing integrity being established between each corresponding annular shoulder and recess by the deflected inner seal.
- the preferred embodiment of this invention comprises a pin and socket multicontact detachable electrical connector having the capability of sealing individual circuits formed by mating terminals.
- the connector 2 shown in the preferred embodiment comprises a female connector half 4 matable with a male connector half 6.
- a conductor 8 can be terminated to a conventional pin terminal 10.
- a second conductor 14 to form a part of the same circuit as conductor 8 can be terminated by conventional means to a conventional socket terminal 12. Terminals 10 and 12 can then be inserted into corresponding terminal receiving cavities 40 and 70 in the respective connector halves.
- Female connector half 4 comprises a body 20 and a cover member 22 interconnected by an integral flexible hinge 24.
- Body 20, cover 22 and hinge 24 are preferably molded as an integral member formed of a conventional insulating plastic.
- the cover member 22 has cylindrical elements projecting through a flat base. Each cylindrical element 28 surrounds an axial bore 30. In the preferred embodiment, four axial bores, each capable of receiving a conductor 8 and a terminal 10 therethrough are located on cover 22.
- hinge 24 is flexible to permit axial alignment of the cover 22 with the base 20.
- Base 20 has a like number of axially extending terminal receiving cavities 40 extending from an exterior end adjacent cover 22 to an interior end which can be disposed adjacent a similar end on the opposite connector half.
- Each terminal receiving cavity 40 comprises a cylindrical bore having an integrally molded retaining member 42 located intermediate the ends thereof. Terminal receiving cavities 40 are of substantially the same diameter throughout the length thereof, except for a portion adjacent the interior end wherein a recess 44 having a diameter greater than the inner diameter of the cavity bore is defined at the inner end.
- a seal receiving counterbore 48 is defined at each cavity.
- a cylindrical seal 32 having a terminal and conductor-receiving aperture therein is dimensioned for receipt within counterbore 48.
- An integrally molded latching member 36 comprising two side by side upstanding members is located on opposite sides of female connector half 20.
- a positive latching surface 37 shown in Figure 2 is defined on the interior of latching member 36.
- the two side by side sections defining latching member 36 define an axially extending opening 38, from which the latching surface 37 extends.
- polarizing grooves 46 extending along the length thereof are defined.
- a raised latching boss 34 is defined at the outer end of body 20. These latching bosses 34 are dimensioned for engagement with latching legs 26 molded on the cover 22.
- the male connector half 6 similarly comprises integrally molded body 50, cover 52 and adjoining flexible hinge 54.
- Male connector half 6 is similarly molded from a conventional insulating material of the same fabrication as the female connector half 4.
- Cover member 52 is similar in construction to cover member 22 and in the preferred embodiment of the invention likewise comprises four cylindrical passages 60 adapted for alignment with cavities 70 extending through the body 50 of the male connector half.
- Hinge 54 permits alignment of the cover 52 with the male connector body 50.
- Cavities 70 in body 6 extend from an outer end adjacent cover 52 to an inner end intermediate the ends of body 6.
- a plurality of tubular protuberances 80 extend from the inner end of housing 6 and define extensions of cavity 70.
- a face 90 intermediate the ends of housing 50 defines the base of protuberances 80.
- a raised annular shoulder 74 having a diameter greater than the exterior diameter of the protuberances 80 is defined at face 90 on each protuberance 80.
- An integral retaining member 72 similar to retaining member 42 is defined within cavities 70 intermediate the outer end of body 50 and the end of the cavities as extended by protuberances 80. Cavities 70 are dimensioned to receive terminals 12, and the mating portion of terminals 12 are at least partially received within the extended cavities within protuberances 80.
- Protuberances 80 have an outer diameter less than the inner diameter of cavities 40 in housing 20.
- Latching arms 66 are integrally molded on opposite sides of housing 50 and define flexible members having a camming wedge 68 at the distal end thereof.
- a pair of ribs 76 are defined adjacent protuberances 80 and are dimensioned for receipt in polarizing grooves 46 on the female connector half 20.
- Cylindrical seals 32 are positioned on the back or exterior face of body 50 in the same manner as seals 32 are positioned on the rear end of the female connector body 20.
- a second inner set of seals 62 having an inner diameter less than the outer diameter of protuberances 80 are adapted to be inserted on the exterior of protuberances 80 in abutment with annular shoulder 74. When seals 62 are positioned in abutment with shoulder 74, the seal 62 would be located intermediate the end of the corresponding protuberance 80.
- the outer diameter of seal 62 is greater than the principal inner diameter of cavities 40 in female connector body 20.
- the outer diameter of seal 62 is also greater than the inner diameter of recesses 44 at the rear end of the cavities in female connector body 20.
- terminals 10 and 12 are dimensioned for receipt within the cavities 40 and 70 extending through the respective connector members.
- Deflectable lances 10A and 12A are located on each terminal and are dimensioned for a snap fit relative to the retaining members 42 and 72 defined within corresponding cavities. Thus axial insertion of terminals 10 and 12 into corresponding cavities 40 and 70 secures the respective terminals in corresponding connector halves.
- Each terminal 10 and 12 is located entirely within its corresponding cavities.
- Terminal 12 is located at least partially within the extended cavities 70 defined by protuberances 80 at the inner or mating end of the male connector half 50.
- Seals 32 engage the conductors 8 and 10 to maintain sealing integrity at the rearward end of each connector half.
- Covers 22 and 52 have been snap fit into engagement with housing bodies 20. and 50 with latches 26 and 56 engaging latching bosses 34 and 64 respectively.
- the conductors 8 and 12 extend respectively through passages 30 and 60 which serve to center the respective conductors to prevent radial deflection of the conductors within the aperture in seal 32 to ensure that sealing integrity is maintained around the periphery of each conductor.
- the resilient latching arms 66 on the male connector are received within the recess or opening 38 defined on the exterior of the female connector half 4.
- Camming members 68 are deflected inwardly by a camming surface 35 and upon relative movement of the latching arms 66 to a prescribed orientation relative to latching member 36, the camming member 68 is released for outward expansion to positively lock the connector halves together. Until the prescribed relative movement of the two connector halves towards each other, inward deflection of the camming member 68 and flexible arm 66 would tend to move or urge the connector halves apart.
- the latching means provides a positive latch for the two connector halves.
- the inner seal 62 maintains sealing integrity between corresponding conductors 8 and 14 forming a single circuit essentially as shown in Figure 4.
- the initially planar annular seal 62 is deflected over the annular shoulder 74.
- Deflected seal 62 maintains sealing integrity even in the presence of anticipated movement or play between the mated connector halves and is consistent with acceptable manufacturing tolerances.
- Annular shoulder 74 and seal 62 are partially received within the enlarged recess 44 at the interface of the female connector half.
- seal 62 is formed of a resilient material, it is essentially incompressible.
- seal 62 forms a fluid tight seal between surfaces on the exterior of the protuberances 80 and on the interface of the female connector adjacent the axially extending cavities.
- a set of two outer seals 32 and a single inner seal 62 can separately seal a single circuit interconnected by pin and socket terminals 10 and 12. If sealing integrity is lost in one circuit, the other circuits are not affected. Furthermore it is not necessary to load every cavity of the mated connector halves in order to maintain sealing integrity for the connectors inserted therein.
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- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
- This invention relates to electrical connectors for use in establishing electrical continuity on a plurality of separate lines or circuits in a single detachable sealed multicontact electrical connector.
- U.S.
Patent 4 150 866 discloses a multicontact sealed detachable electrical connector having a plurality of male and female terminals separately located in matable multicavity housings. The electrical connector shown therein employs seals at the outer face of both connector halves to establish sealing integrity with each round wire conductor as it enters the corresponding terminal cavity. Sealing integrity is maintained at the interface between the two connector housings by a single O-ring positioned at the mating face of the two housings. If one of the seals at the end of the housings cavities engaging the round wire conductor were to fail, sealing integrity would be lost for all of the conductors. - U.S. Patent 3 221 292 discloses a detachable multicontact electrical connector employing a unitary grommet at each end of the connector halves to maintain sealing integrity with the wires leading into the plurality of cavities in the connector. Sealing integrity is maintained around the exterior of the connector by a peripheral O-ring seal. To the extent sealing integrity is maintained between separate lines in this connector, sealing integrity must be maintained at the faces of intermediate grommets in separate connector parts. It does not appear however that sealing integrity is to be maintained between separate lines interconnected by mating male and female terminals.
- U.S. Patent 3 697 928 also discloses a detachable multicontact electrical connector having sealing grommets at the rearward end of two connector halves for maintaining sealing integrity with the wires extending into cavities in the connector half. A peripheral O-ring seal is provided between the exterior of the male connector half and the encircling flange of the female connector half to establish peripheral sealing integrity.
- Other multicontact connectors such as US-A-3 478 305 and FR-A-2 159 701 employ a single face seal between mating faces of male and female connector halves to establish sealing integrity between terminals in opposite connecting halves at the interface. However these interfacial seals are intended to maintain the sealing integrity between all of the lines in the connector and do not ensure sealing integrity when one or more of a plurality of lines in a multicontact connector are not present.
- US-A-4 311 355 discloses a multicontact detachable sealed electrical connector for use in establishing a sealed interconnection between conductors in one or more circuits, comprising : first and second mating terminals attachable to separate conductors comprising each circuit; first and second mating connector housings formed of an insulative material, each having cavities extending from an exterior housing end therethrough to an interior housing end, each cavity having retaining means therein for attaching a corresponding terminal insertable therein to the housing, an outer seal aligned with each housing cavity and surrounding each conductor in the housing cavity at the exterior end of the housing, to establish sealing integrity between each conductor and the corresponding connector housing ; tubular protuberances on the interior end of the first connector housing defining an extension of each cavity therein, each tubular protuberance being insertable in the corresponding cavity adjacent the interior end of the second connector housing.
- It is an object of the present invention to provide an improved sealed connector having the features acknowledged to be known from US-A-4311355.
- The invention is characterised by an annular shoulder on the exterior of each tubular protuberance, a resilient, deflectable inner seal surrounding each tubular protuberance intermediate the ends in abutment with annular shoulder, the inner seal having an outer dimension greater than the inner diameter of the cavity in the second housing, the annular shoulder having an outer dimension less than the outer dimension of the corresponding inner seal, the inner seal engaging the second connector housing at the inner end when the first and second connector housings are mated, whereby terminals interconnecting corresponding conductors forming each circuit are separately sealed, an annular recess having an outer dimension greater than the inner diameter of the cavities in the second housing extending around each cavity at the interior second housing end, each inner seal being only partially insertable in each corresponding recess, each inner seal being deflectable around the exterior of the corresponding annular shoulder, sealing integrity being established between each corresponding annular shoulder and recess by the deflected inner seal.
- The invention will now be described by way of example with reference to the accompanying partly diagrammatic drawings of a preferred embodiment, in which :
- Figure 1 is an exploded perspective view of the seal connector showing mating connector halves and a single terminal pair insertable into corresponding connector halves.
- Figure 2 is a view showing corresponding terminal receiving cavities for terminals used to interconnect conductors to form a single circuit.
- Figure 3 is a view similar to Figure 2 showing the position of the terminals in the housing as shown in Figure 2.
- Figure 4 is a view similar to Figures 2 and 3 but showing the connector halves and the terminals in mated configuration.
- The preferred embodiment of this invention comprises a pin and socket multicontact detachable electrical connector having the capability of sealing individual circuits formed by mating terminals. The
connector 2 shown in the preferred embodiment comprises afemale connector half 4 matable with amale connector half 6. Aconductor 8 can be terminated to aconventional pin terminal 10. Similarly asecond conductor 14 to form a part of the same circuit asconductor 8, can be terminated by conventional means to aconventional socket terminal 12.Terminals cavities -
Female connector half 4 comprises abody 20 and acover member 22 interconnected by an integralflexible hinge 24.Body 20,cover 22 andhinge 24 are preferably molded as an integral member formed of a conventional insulating plastic. Thecover member 22 has cylindrical elements projecting through a flat base. Eachcylindrical element 28 surrounds anaxial bore 30. In the preferred embodiment, four axial bores, each capable of receiving aconductor 8 and aterminal 10 therethrough are located oncover 22. As shown in Figure 1,hinge 24 is flexible to permit axial alignment of thecover 22 with thebase 20.Base 20 has a like number of axially extending terminal receivingcavities 40 extending from an exterior endadjacent cover 22 to an interior end which can be disposed adjacent a similar end on the opposite connector half. Eachterminal receiving cavity 40 comprises a cylindrical bore having an integrally molded retainingmember 42 located intermediate the ends thereof.Terminal receiving cavities 40 are of substantially the same diameter throughout the length thereof, except for a portion adjacent the interior end wherein arecess 44 having a diameter greater than the inner diameter of the cavity bore is defined at the inner end. On the outer end of thefemale connector half 20, aseal receiving counterbore 48 is defined at each cavity. Acylindrical seal 32 having a terminal and conductor-receiving aperture therein is dimensioned for receipt withincounterbore 48. - An integrally molded
latching member 36 comprising two side by side upstanding members is located on opposite sides offemale connector half 20. Apositive latching surface 37 shown in Figure 2 is defined on the interior oflatching member 36. The two side by side sections defininglatching member 36 define an axially extending opening 38, from which thelatching surface 37 extends. On the adjacent sides of the exterior ofhousing 20, polarizinggrooves 46 extending along the length thereof are defined. In the preferred embodiment of this invention, a raisedlatching boss 34 is defined at the outer end ofbody 20. Theselatching bosses 34 are dimensioned for engagement withlatching legs 26 molded on thecover 22. - The
male connector half 6 similarly comprises integrally moldedbody 50,cover 52 and adjoiningflexible hinge 54.Male connector half 6 is similarly molded from a conventional insulating material of the same fabrication as thefemale connector half 4.Cover member 52 is similar in construction tocover member 22 and in the preferred embodiment of the invention likewise comprises fourcylindrical passages 60 adapted for alignment withcavities 70 extending through thebody 50 of the male connector half. Hinge 54 permits alignment of thecover 52 with themale connector body 50.Cavities 70 inbody 6 extend from an outer endadjacent cover 52 to an inner end intermediate the ends ofbody 6. A plurality oftubular protuberances 80 extend from the inner end ofhousing 6 and define extensions ofcavity 70. Aface 90 intermediate the ends ofhousing 50 defines the base ofprotuberances 80. A raisedannular shoulder 74 having a diameter greater than the exterior diameter of theprotuberances 80 is defined atface 90 on eachprotuberance 80. An integral retainingmember 72 similar to retainingmember 42 is defined withincavities 70 intermediate the outer end ofbody 50 and the end of the cavities as extended byprotuberances 80.Cavities 70 are dimensioned to receiveterminals 12, and the mating portion ofterminals 12 are at least partially received within the extended cavities withinprotuberances 80.Protuberances 80 have an outer diameter less than the inner diameter ofcavities 40 inhousing 20. - Latching
arms 66 are integrally molded on opposite sides ofhousing 50 and define flexible members having acamming wedge 68 at the distal end thereof. A pair ofribs 76 are definedadjacent protuberances 80 and are dimensioned for receipt in polarizinggrooves 46 on thefemale connector half 20. -
Cylindrical seals 32, are positioned on the back or exterior face ofbody 50 in the same manner asseals 32 are positioned on the rear end of thefemale connector body 20. A second inner set ofseals 62 having an inner diameter less than the outer diameter ofprotuberances 80 are adapted to be inserted on the exterior ofprotuberances 80 in abutment withannular shoulder 74. Whenseals 62 are positioned in abutment withshoulder 74, theseal 62 would be located intermediate the end of thecorresponding protuberance 80. The outer diameter ofseal 62 is greater than the principal inner diameter ofcavities 40 infemale connector body 20. The outer diameter ofseal 62 is also greater than the inner diameter ofrecesses 44 at the rear end of the cavities infemale connector body 20. - After the
respective conductors corresponding terminals perspective passages resilient seal 32 positioned at the rear end ofcorresponding connector housings Terminals cavities members terminals cavities Terminal 12 is located at least partially within theextended cavities 70 defined byprotuberances 80 at the inner or mating end of themale connector half 50.Seals 32 engage theconductors Covers housing bodies 20. and 50 withlatches engaging latching bosses conductors passages seal 32 to ensure that sealing integrity is maintained around the periphery of each conductor. With theconductors terminals female connector half 4 and themale connector half 6 are brought into engagement, the resilient latchingarms 66 on the male connector are received within the recess or opening 38 defined on the exterior of thefemale connector half 4. Cammingmembers 68 are deflected inwardly by acamming surface 35 and upon relative movement of the latchingarms 66 to a prescribed orientation relative to latchingmember 36, thecamming member 68 is released for outward expansion to positively lock the connector halves together. Until the prescribed relative movement of the two connector halves towards each other, inward deflection of thecamming member 68 andflexible arm 66 would tend to move or urge the connector halves apart. Thus the latching means provides a positive latch for the two connector halves. - The
inner seal 62 maintains sealing integrity between correspondingconductors annular seal 62 is deflected over theannular shoulder 74. Deflectedseal 62 maintains sealing integrity even in the presence of anticipated movement or play between the mated connector halves and is consistent with acceptable manufacturing tolerances.Annular shoulder 74 andseal 62 are partially received within theenlarged recess 44 at the interface of the female connector half. Althoughseal 62 is formed of a resilient material, it is essentially incompressible. Thus the deflection of the seal rather than compression ofseal 62 forms a fluid tight seal between surfaces on the exterior of theprotuberances 80 and on the interface of the female connector adjacent the axially extending cavities. Thus a set of twoouter seals 32 and a singleinner seal 62 can separately seal a single circuit interconnected by pin andsocket terminals
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69628685A | 1985-01-30 | 1985-01-30 | |
US696286 | 1985-01-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0208778A1 EP0208778A1 (en) | 1987-01-21 |
EP0208778B1 true EP0208778B1 (en) | 1989-11-02 |
Family
ID=24796442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860901223 Expired EP0208778B1 (en) | 1985-01-30 | 1986-01-30 | Detachable sealed multicontact electrical connector |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0208778B1 (en) |
JP (1) | JPS62501594A (en) |
DE (1) | DE3666756D1 (en) |
WO (1) | WO1986004744A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2509471Y2 (en) * | 1988-07-19 | 1996-09-04 | モレックス インコーポレーテッド | Waterproof electrical connector |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3478305A (en) * | 1966-09-26 | 1969-11-11 | Bunker Ramo | Electrical connector |
FR2159701A6 (en) * | 1971-11-09 | 1973-06-22 | Radiall Sa | |
US4311355A (en) * | 1978-10-23 | 1982-01-19 | General Motors Corporation | Weatherproof electrical connector |
-
1986
- 1986-01-30 WO PCT/US1986/000196 patent/WO1986004744A1/en active IP Right Grant
- 1986-01-30 EP EP19860901223 patent/EP0208778B1/en not_active Expired
- 1986-01-30 JP JP50092586A patent/JPS62501594A/en active Pending
- 1986-01-30 DE DE8686901223T patent/DE3666756D1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS62501594A (en) | 1987-06-25 |
WO1986004744A1 (en) | 1986-08-14 |
DE3666756D1 (en) | 1989-12-07 |
EP0208778A1 (en) | 1987-01-21 |
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