WO1986006555A1 - Electrical connector with secondary locking member - Google Patents

Electrical connector with secondary locking member Download PDF

Info

Publication number
WO1986006555A1
WO1986006555A1 PCT/US1986/000883 US8600883W WO8606555A1 WO 1986006555 A1 WO1986006555 A1 WO 1986006555A1 US 8600883 W US8600883 W US 8600883W WO 8606555 A1 WO8606555 A1 WO 8606555A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
receptacle
housing
passageway
side walls
Prior art date
Application number
PCT/US1986/000883
Other languages
French (fr)
Inventor
Daniel Russell Coldren
Kurt Eric Peiffer
Original Assignee
Amp Incorporated
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Amp Incorporated filed Critical Amp Incorporated
Publication of WO1986006555A1 publication Critical patent/WO1986006555A1/en

Links

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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/436—Securing a plurality of contact members by one locking piece or operation
    • 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
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner

Definitions

  • the invention relates to electrical connectors.
  • the invention concerns electrical connectors of the type comprising an insulating housing moulded in one piece with a series of parallel through-passageways opening to front and rear faces respectively of the housing , each passageway having bottom and top walls respectively and opposite side walls , a rearwardly divergent cam surface being formed in the top wall , a tab receptacle having a mating portion of generally channel section with free edge portions of the channel side walls being bent over the channel base and a latching tongue extending along the channel between the channel base and the free edge portions of the side walls , a release arm upstanding from the rear end of the tongue, interengageable primary locking means respectively being provided on a passageway walls and the receptacle, a wire connecting portion extending rearwardly from the mating portion , each through-passageway being of increased height as it extends rearwardly from the cam surface providing clearance for the release arm .
  • Electrical connectors of the above type are widely used particularly in the automotive industry.
  • the housing is formed with a series of passageways receiving receptacles oriented in different positions but, nevertheless , the secondary locking means should require little or no modification of the existing connector housing structure and be capable of being moulded by a conventional technique as only a single additional piece which can be applied by hand in a simple manner to secure all the receptacles irrespective of their orientation .
  • a secondary locking means comprises a secondary locking member moulded in one piece of insulating material comprising a web from one face of which extend perpendicularly a corresponding series of through-channel form inserts , side walls of each insert channel having axial terminal engaging extensions , the secondary locking member being releasably attachable to the housing after receipt of the receptacles by introduction of the inserts into the respective passageways from the rear face in a sliding fit with the insert channel base adjacent the top wall and the wire connecting portion received in the channel , the terminated wires entering the channel mouths and extending through the inserts , the extensions being aligned with and adjacent the rear ends of the receptacle channel walls whereby significant rearward movement of the receptacle will be prevented by abutment of the extensions with the - rear ends of the receptacle side wal ls.
  • the secondary locking means may readily be assembled to the rear face of the connector housing , the channel section of the inserts assuring the precise alignment of the extensions with and sufficient support for the extensions to retain the receptacle in position in spite of the large spacing of the rear ends of the receptacle channel walls from the top wal l of the housing inherent in the terminal design and to withstand high pull-out and push-out forces which may arise from slightly misaligned mating tabs both as a result of mating by hand in an inaccessible location such as the engine compartment of an automobile and inadvertent pulling or catching of the wires .
  • the wire connecting portion of the tab receptacle is joined to the mating portion by a transition portion having upturned lips converging rearwardly and located adjacent the bottom wall and the extensions are rebated at ends remote from the insert channel base, the lips being received in the rebates .
  • the rebates receive the lips assisting in stabilizing the terminal in position .
  • Figure 1 is an exploded perspective view of the connector
  • Figure 2 is a fragmentary cross-sectional view of the connector
  • Figure 3 is a side elevation of a secondary locking member in the direction indicated by 3-3 in Figure 1 ;
  • Figure 4 is a side elevation of the secondary locking member in the direction indicated by 4-4 in Figure 1 ; and .
  • Figure 5 is a rear elevation of the secondary locking member.
  • the connector assembly comprises an insulating housing 11 receiving a series of tab receptacles 12 and a secondary locking member 13.
  • the housing 11 is moulded in one piece from plastics material with a series of through-passageways 14 extending in parallel relative between front and rear faces 15 and 16 , respectively.
  • Each through-passageway is formed by bottom and top walls 18 and 19 , respectively , joined by opposed side walls 20.
  • the upper wall 18 provides , in known fashion , a rearwardly divergent cam surface 22 intermediate the ends of the through-passageway and is of increased size rearwardly of the cam surface 22 providing clearance to admit the receptacle 12 into the housing from the rear.
  • the receptacle guiding rib 23 extends centrally along the upper wall at a location forward of the cam surface 22 and a stop 25 having a rearwardly extending ramp entry surface 26 upstands from the bottom wall 18 for primary receptacle locking .
  • the through-passageways 14 are symmetrical ly arranged as a group of four with bottom walls adjacent, a fifth similar through-passageway 27 being located on a wing 28 of the housing .
  • the tab receptacles 12 are closely similar to those described in the above-mentioned patent, each being stamped and formed in one piece with a mating portion 31 joined by a transition portion 32 to a wire connecting portion 33.
  • the mating portion 31 is of generally channel section having a base , provided with a stop receiving aperture 34, and channel walls 35 turned over towards the base at their free edges with rear ends 39.
  • Flanges 36 are pushed out from the base under the turned-over edges and a latching tongue 37 extends rearwardly from a front edge of the base between the turned-over edges and the flanges and having , upstanding from a rear end , a release arm 38.
  • the transition portion 32 is general ly dished having upstanding lips 41 converging towards the wire connector portion 33.
  • the secondary locking member 13 is moulded in one piece of plastics material and comprises a web 43 from one face of which extend perpendicularly a series of through-channel form inserts
  • Latch arms 49 extend from remote corners of the web for engagement with shoulders 50 at corresponding locations on the housing releasably to secure the secondary locking member to the housing .
  • the tab receptacles 12 terminating individual wires are inserted into respective through-passageways through the rear face 16 until the stop 25 is received in the aperture 34 , the tab receptacle being located in the forward constructed portion of the passageway in an interference fit with the rib 23 received between the free edges of the tab receptacle side walls.
  • the release arm 38 will be adjacent the cam surface 22 in the tab latching condition of the connector.
  • the secondary locking member is then applied to the housing rear face , with the terminated wires inserted into mouths of the channels of the inserts as they are pushed along the through-passageways until the latching arms 49 engage with the shoulders 50.
  • bottom edges of the extensions defining the rebates 41 also extend over the lips 41 , are trapped between those edges , and the bottom wall of the through-passageway. This assist in retention of the receptacle and assists in stabilising the terminals both during mating and unmating .

Abstract

An electrical connector of the type comprising a housing (11) having through-passageways (14) each receiving a tab receptacle (12) having a latching tongue (37) releasable by axial movement of the tab receptacle (12) relative to the housing (11) has a secondary locking member (13) comprising a series of channel section inserts (44) extending from a web (43) having latches (49) for attachment of the locking member (13) to the housing (11). Each insert (44) is formed with extensions (46) from the channel side walls (35) which engage behind a mating portion (31) of the tab receptacle (12) to prevent rear movement thereof, while providing clearance for a release arm (38) extending from the rear of the latchingtongue (37).

Description

ELECTRICAL CONNECTOR WITH SECONDARY LOCKI NG MEMBER The invention relates to electrical connectors. In particular , the invention concerns electrical connectors of the type comprising an insulating housing moulded in one piece with a series of parallel through-passageways opening to front and rear faces respectively of the housing , each passageway having bottom and top walls respectively and opposite side walls , a rearwardly divergent cam surface being formed in the top wall , a tab receptacle having a mating portion of generally channel section with free edge portions of the channel side walls being bent over the channel base and a latching tongue extending along the channel between the channel base and the free edge portions of the side walls , a release arm upstanding from the rear end of the tongue, interengageable primary locking means respectively being provided on a passageway walls and the receptacle, a wire connecting portion extending rearwardly from the mating portion , each through-passageway being of increased height as it extends rearwardly from the cam surface providing clearance for the release arm . Insertion of the tab receptacle, mating portion leading , into the passageway from the rear face with the channel base adjacent the bottom wall of the passageway until interengagement of the primary locking means will locate the release arm adjacent the cam surface with a wire terminated by the wire connecting portion extending from the passageway at the rear face , the primary locking means permitting limited relative axial movement of the receptacle and housing causing the cam surface to deflect the release arm to release the tongue. An example of a connector of the above-noted type is disclosed in U . S . Patent Reissue 31 , 142.
Electrical connectors of the above type are widely used particularly in the automotive industry.
When assembling the connector in the housing from the rear , it is clearly essential that the receptacle always be inserted sufficiently far forwards to enable interengagement of the primary locking means . In addition , should there be a failure of the primary locking means , it is important that back-out of the receptacle be prevented . The risk of failure or inadvertent dislodgement of the primary locking means is enhanced by the requirement both for such means to be overridden to permit insertion of the receptacle into the passageway from the rear and to permit relative movement of the housing and receptacle to permit release of a mating tab .
The risk of both these occurrences is also increased in the automotive applications in view both of the occasional need to replace individual receptacles by hand when the connector is installed in a restricted space in the automobile and the adverse environment of use subjecting the connector to extreme vibration . Incomplete receptacle insertion is difficult to detect visually and partial mating with a tab may still occur resulting later in electrical failure.
It is desirable, therefore, to provide a connector with secondary locking means which will both assure full insertion of the receptacle and enable removal of the individual receptacle. An additional design problem arises for the secondary locking means to be sufficiently strong in view both of the requirement both to be closely adjacent the rear tab receiving portion of the connector which is widely spaced from the top wall of the passageway and yet to enable unrestricted movement of the release lever which upstands from the rear of the tab receiving portion . In a particular example, the housing is formed with a series of passageways receiving receptacles oriented in different positions but, nevertheless , the secondary locking means should require little or no modification of the existing connector housing structure and be capable of being moulded by a conventional technique as only a single additional piece which can be applied by hand in a simple manner to secure all the receptacles irrespective of their orientation .
According to the invention , a secondary locking means comprises a secondary locking member moulded in one piece of insulating material comprising a web from one face of which extend perpendicularly a corresponding series of through-channel form inserts , side walls of each insert channel having axial terminal engaging extensions , the secondary locking member being releasably attachable to the housing after receipt of the receptacles by introduction of the inserts into the respective passageways from the rear face in a sliding fit with the insert channel base adjacent the top wall and the wire connecting portion received in the channel , the terminated wires entering the channel mouths and extending through the inserts , the extensions being aligned with and adjacent the rear ends of the receptacle channel walls whereby significant rearward movement of the receptacle will be prevented by abutment of the extensions with the - rear ends of the receptacle side wal ls. The secondary locking means may readily be assembled to the rear face of the connector housing , the channel section of the inserts assuring the precise alignment of the extensions with and sufficient support for the extensions to retain the receptacle in position in spite of the large spacing of the rear ends of the receptacle channel walls from the top wal l of the housing inherent in the terminal design and to withstand high pull-out and push-out forces which may arise from slightly misaligned mating tabs both as a result of mating by hand in an inaccessible location such as the engine compartment of an automobile and inadvertent pulling or catching of the wires . There is no need to thread the terminated wires through the inserts prior to assembly in view of the channel section configuration of the inserts , the wires simply being received through the channel mouths after insertion of the receptacles into the housing . Any incompletely inserted receptacles are pushed to their correct, fully inserted positions by the extensions on the inserts during the assembly and prevented from being dislodged rearwardly by engagement with the inserts . Preferably , the wire connecting portion of the tab receptacle is joined to the mating portion by a transition portion having upturned lips converging rearwardly and located adjacent the bottom wall and the extensions are rebated at ends remote from the insert channel base, the lips being received in the rebates . The rebates receive the lips assisting in stabilizing the terminal in position .
An example of an electrical connector according to the invention will now be described with reference to the accompanying drawings in which : Figure 1 is an exploded perspective view of the connector;
Figure 2 is a fragmentary cross-sectional view of the connector;
Figure 3 is a side elevation of a secondary locking member in the direction indicated by 3-3 in Figure 1 ; Figure 4 is a side elevation of the secondary locking member in the direction indicated by 4-4 in Figure 1 ; and .
Figure 5 is a rear elevation of the secondary locking member.
The connector assembly comprises an insulating housing 11 receiving a series of tab receptacles 12 and a secondary locking member 13.
The housing 11 is moulded in one piece from plastics material with a series of through-passageways 14 extending in parallel relative between front and rear faces 15 and 16 , respectively. Each through-passageway is formed by bottom and top walls 18 and 19 , respectively , joined by opposed side walls 20. The upper wall 18 provides , in known fashion , a rearwardly divergent cam surface 22 intermediate the ends of the through-passageway and is of increased size rearwardly of the cam surface 22 providing clearance to admit the receptacle 12 into the housing from the rear. A.. receptacle guiding rib 23 extends centrally along the upper wall at a location forward of the cam surface 22 and a stop 25 having a rearwardly extending ramp entry surface 26 upstands from the bottom wall 18 for primary receptacle locking . The through-passageways 14 are symmetrical ly arranged as a group of four with bottom walls adjacent, a fifth similar through-passageway 27 being located on a wing 28 of the housing . The tab receptacles 12 are closely similar to those described in the above-mentioned patent, each being stamped and formed in one piece with a mating portion 31 joined by a transition portion 32 to a wire connecting portion 33.
The mating portion 31 is of generally channel section having a base , provided with a stop receiving aperture 34, and channel walls 35 turned over towards the base at their free edges with rear ends 39.
Flanges 36 are pushed out from the base under the turned-over edges and a latching tongue 37 extends rearwardly from a front edge of the base between the turned-over edges and the flanges and having , upstanding from a rear end , a release arm 38.
The transition portion 32 is general ly dished having upstanding lips 41 converging towards the wire connector portion 33.
The secondary locking member 13 is moulded in one piece of plastics material and comprises a web 43 from one face of which extend perpendicularly a series of through-channel form inserts
44 at a spacing corresponding to that of the through-passageways 14, each of which with a wire-admitting mouth of each channel channel opening . Side walls 45 of the inserts defining the channel section have axial terminal engaging extensions 46 rebated at ends 47 remote from the channel base.
Latch arms 49 extend from remote corners of the web for engagement with shoulders 50 at corresponding locations on the housing releasably to secure the secondary locking member to the housing .
In assembling the connector , the tab receptacles 12 terminating individual wires are inserted into respective through-passageways through the rear face 16 until the stop 25 is received in the aperture 34 , the tab receptacle being located in the forward constructed portion of the passageway in an interference fit with the rib 23 received between the free edges of the tab receptacle side walls. The release arm 38 will be adjacent the cam surface 22 in the tab latching condition of the connector. The secondary locking member is then applied to the housing rear face , with the terminated wires inserted into mouths of the channels of the inserts as they are pushed along the through-passageways until the latching arms 49 engage with the shoulders 50.
In this position , the extensions 46 are aligned adjacent rear edges of the channel walls 35 of the mating portion on each side of the release arm 38 with the lips received in the rebates 41 . Any receptacles that are only partially inserted will be pushed to their fully inserted positions by the inserts. Forward movement of the receptacle relative to the housing causing depression of the release arm 38 by cam surface 22 to release the tab will still be permitted by the insert. However, any tendency for* the receptacle to be moved rearwardly as , for example, by tension on the wires or resistance to tab insertion , particularly if misaligned , will be prevented by abutment of the extensions 46 with the rear ends of the channel walls 35. As bottom edges of the extensions defining the rebates 41 also extend over the lips 41 , are trapped between those edges , and the bottom wall of the through-passageway. This assist in retention of the receptacle and assists in stabilising the terminals both during mating and unmating .

Claims

CLA1MS :
1 . An electrical connector comprising an insulating housing (1 1 ) moulded in one piece with a series of parallel through-passageways ( 14) opening to front and rear faces ( 15 and 16 respectively) of the housing ( 1 1 ) , each passageway ( 1 ) having bottom and top walls ( 18 and 19 respectively) and opposite side walls (20) , a rearwardly divergent cam surface (22) being formed in the top wall ( 19) , a tab receptacle ( 12) having a mating portion (31 ) of generally channel section with free edge portions of the channel side walls (35 ) being bent over the channel base and a latching tongue (37) extending along the channel between the channel base and the free edge portions of the side walls , a release arm (38) upstanding from the rear end of the tongue (37) , interengageable primary locking means (26 and 34) respectively being provided on a passageways wall ( 18) and the receptacle ( 12) , a wire connecting portion (33) extending rearwardly from the mating portion (31 ) , each through-passageway ( 14) being of increased height as it extends rearwardly from the cam surface (22) providing clearance for the release arm (38) insertion of the tab receptacle ( 12) mating portion (31 ) leading into the passageway ( 1 4) from the rear face ( 16) with the channel base adjacent the bottom wall ( 19) of the passageway ( 14) until interengagement of the primary locking means (26 , 34) locating arm (38) adjacent the cam surface (22) with a wire terminated by the wire connecting portion exiting from the passageway at the rear face (16) , the primary locking means (26 , 34) permitting limited relative axial movement of the receptacle ( 12) and housing ( 1 1 ) causing the cam surface (22) to deflect the release arm (38) to release the tongue , characterised by a secondary locking member ( 13) moulded in one piece of insulating material comprising a web (43) from one face of which extend perpendicularly a corresponding series of through-channel form inserts (44) , side walls (45) of each insert channel having axial terminal engaging extensions (46) , the secondary locking member (13) being releasably attachable to the housing (11 ) after receipt of the receptacles ( 12) by introduction of the inserts (44) into the respective passageways (14) from the rear face ( 16) in a sliding fit with the insert channel base adjacent the top wall (14) and the wire connecting portion (33) received in the channel , the terminated wires entering the channel mouths and extending through the inserts (44) , the extensions (41 ) being aligned with and adjacent the rear ends (39) of the receptacle channel walls (35 ) whereby significant rearward movement of the receptacle (12) will be prevented by abutment of the extensions (46) with the rear ends (39) of the receptacle side walls (35) .
2. An electrical connector according to claim 1 , characterised in that the wire connecting portion (33) is joined to the mating portion (31 ) by a transition portion (32) having upturned lips (41 ) converging rearwardly and located adjacent the bottom wall ( 18 ) and the extensions (46) are formed with rebates (47) remote from the insert channel base , the lips (41 ) being received in the rebates (47) and thereby trapped against the bottom wall (18) during relative axial movement of the receptacle (12) and housing (1 1 ) .
3. An electrical connector according to claim 1 , characterised in that at least some of the through-passageways ( 14) and inserts (44) are at different angular orientations.
PCT/US1986/000883 1985-04-30 1986-04-23 Electrical connector with secondary locking member WO1986006555A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72900085A 1985-04-30 1985-04-30
US729,000 1985-04-30

Publications (1)

Publication Number Publication Date
WO1986006555A1 true WO1986006555A1 (en) 1986-11-06

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ID=24929159

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/000883 WO1986006555A1 (en) 1985-04-30 1986-04-23 Electrical connector with secondary locking member

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PT (1) PT82484B (en)
WO (1) WO1986006555A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230391A (en) * 1989-03-05 1990-10-17 Amp Inc Retaining terminals of an electrical connector
FR2655207A1 (en) * 1989-11-29 1991-05-31 Amp France Electrical connector which includes improved terminal retention means
FR2699012A1 (en) * 1992-12-03 1994-06-10 Cinch Connecteurs Sa Positive lock arrangement for electrical connection elements in connector for use in motor car circuits - has series of sliding sections each having notch and female section having elasticated ramp with positive locking ramp
WO2011114065A1 (en) 2010-03-17 2011-09-22 Tbi Electrical device, in particular a socket and connector, having a secondary lock, method for moulding such a device and mould for producing such a device
US8864534B2 (en) 2010-04-20 2014-10-21 Tbi Double-locking socket for an electric bulb

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2024538A (en) * 1978-06-28 1980-01-09 Gen Motors Corp Electrical connector terminals
US4352535A (en) * 1980-06-27 1982-10-05 General Motors Corporation Electrical connector
USRE31142E (en) * 1974-05-03 1983-02-08 Amp Incorporated Electrical tab receptacle
EP0113809A2 (en) * 1982-12-18 1984-07-25 Grote & Hartmann GmbH & Co. KG Electrical plug-in connector with a locking device for an electrical contact element extending into a housing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31142E (en) * 1974-05-03 1983-02-08 Amp Incorporated Electrical tab receptacle
GB2024538A (en) * 1978-06-28 1980-01-09 Gen Motors Corp Electrical connector terminals
US4352535A (en) * 1980-06-27 1982-10-05 General Motors Corporation Electrical connector
EP0113809A2 (en) * 1982-12-18 1984-07-25 Grote & Hartmann GmbH & Co. KG Electrical plug-in connector with a locking device for an electrical contact element extending into a housing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230391A (en) * 1989-03-05 1990-10-17 Amp Inc Retaining terminals of an electrical connector
GB2230391B (en) * 1989-03-05 1994-03-23 Amp Inc Electrical connector
FR2655207A1 (en) * 1989-11-29 1991-05-31 Amp France Electrical connector which includes improved terminal retention means
FR2699012A1 (en) * 1992-12-03 1994-06-10 Cinch Connecteurs Sa Positive lock arrangement for electrical connection elements in connector for use in motor car circuits - has series of sliding sections each having notch and female section having elasticated ramp with positive locking ramp
WO2011114065A1 (en) 2010-03-17 2011-09-22 Tbi Electrical device, in particular a socket and connector, having a secondary lock, method for moulding such a device and mould for producing such a device
US8864534B2 (en) 2010-04-20 2014-10-21 Tbi Double-locking socket for an electric bulb

Also Published As

Publication number Publication date
PT82484A (en) 1986-11-05
PT82484B (en) 1995-03-01

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