EP0016269B1 - Elektrische Stecker-Anordnung - Google Patents

Elektrische Stecker-Anordnung Download PDF

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Publication number
EP0016269B1
EP0016269B1 EP19790300431 EP79300431A EP0016269B1 EP 0016269 B1 EP0016269 B1 EP 0016269B1 EP 19790300431 EP19790300431 EP 19790300431 EP 79300431 A EP79300431 A EP 79300431A EP 0016269 B1 EP0016269 B1 EP 0016269B1
Authority
EP
European Patent Office
Prior art keywords
preformed
pins
plug
preformed body
cover
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
Application number
EP19790300431
Other languages
English (en)
French (fr)
Other versions
EP0016269A1 (de
Inventor
Philip Ramsay Gerrett
Ernest Leonard Charles Barrett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Priority to DE7979300431T priority Critical patent/DE2965835D1/de
Priority to EP19790300431 priority patent/EP0016269B1/de
Publication of EP0016269A1 publication Critical patent/EP0016269A1/de
Application granted granted Critical
Publication of EP0016269B1 publication Critical patent/EP0016269B1/de
Expired legal-status Critical Current

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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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • This invention relates to an electric plug assembly of the kind in which the plug pins and associated conductor terminals are mounted in a preformed body of electrically insulating material, the conductors of a length of flexible insulated multi-conductor cable are electrically connected to appropriate terminals of the plug, and a moulded plug body of electrically insulating material wholry- or partially encapsulates the preformed body and the plug pins and associated conductor terminals with an appropriate length of each pin protruding from a face of the plug assembly (hereinafter referred to as the rear face) and is permanently bonded to the insulating covering of a part of the length of the cable. See e.g. FR-A-2 092 206.
  • Electric plug assemblies of this kind will hereinafter for convenience, be referred to as "of the kind described".
  • the invention is especially, but not exclusively, concerned with three pin electric plug assemblies of the kind described suitable for use with domestic electrical appliances and with other three pin electric plug assemblies of the kind described which incorporate means for electrically connecting a cartridge fuse between the line pin and its associated conductor terminal.
  • a preformed cover of an electrically insulating material that is substantially harder than the moulded insulating material of the plug body is encapsulated in the moulded plug body and is of such a shape and form and is so connected to the preformed body that it bears against and overlies the inner ends of at least the line and neutral pins and associated conductor terminals thereby to hold said pins firmly in position in the preformed body and to form a guard between said terminals and the outer part of the plug body.
  • the preformed cover bears against and overlies the inner ends of all the pins and associated conductor terminals thereby to hold all pins firmly in position in the preformed body and to form a guard be-tween terminals and the outer part of the plug body.
  • the provision of the preformed cover serves the dual purpose of holding the plug pins against which it bears firmly in position during moulding of the plug body and of eliminating or substantially reducing the risk that a conductor wire of conductor wires may protrude through the moulded plug body and constitute a dangerous hazard to a user of the plug.
  • the preformed cover is initially detachably connected to the preformed body in which the plug pins and associated conductor terminals are mounted and in a preferred embodiment the preformed cover has protuberances which are snap fits in appropriately located holes or recesses in the preformed body.
  • the preformed cover comprises a top and a side wall or side walls, an aperture being provided in a side wall, or one of the side walls being omitted, to provide access for the flexible cable.
  • the preformed cover may have protruding inwardly of its top, ribs which are so positioned that, when the cover is connected to the preformed body, they bear against the inner ends of the plug pins and hold them firmly in position during moulding of the plug body.
  • a rib or side wall of the preformed cover may hold the cable-gripping means firmly in position.
  • a side wall of the preformed cover and a neighbouring part of the preformed body may be appropriately shaped so as to cooperate to form means for gripping the cable, or a side wall of the preformed cover may be appropriately shaped so as to form means for gripping the cable.
  • the moulded plug body is of urea or polyester
  • the preformed cover is of nylon or polyester
  • the invention also includes an improved method of manufacturing an improved electric plug assembly, which comprises the steps of effecting the electrical and/or mechanical connections between the plug pins and their associated conductor terminals and the electrical connections between the cable conductors and the conductor terminals: introducing the plug pins and their associated conductor terminals, with the cable conductors electrically connected thereto, into holes and recesses in the front face of the preformed body so that appropriate lengths of the pins protrude from the rear face thereof: characterised by connecting to the preformed body a preformed cover which is of a substantially hard electrically insulating material and which is of such a shape and form that it bears against and overlies the inner ends of at least the line and neutral pins and associated conductor terminals to hold said pins firmly in position in the preformed body: and moulding therearound an electrically insulating material to form a moulded plug body which wholly or partially encapsulates the preformed body, the preformed cover and the plug pins and associated conductor terminals and which is bonded to the insul
  • the plug assembly is to include means for electrically connecting a cartridge fuse between the line pin and its associated conductor terminal
  • said means comprises two spaced electrical contacts, one of which is electrically and/or mechanically connected to the line pin and the other to its associated conductor terminal before they are introduced into the preformed body and which are introduced into slots in the front face of the body so that they protrude into a cartridge-fuse recess in the rear face of the body.
  • the two spaced electrical contacts are carried on a single preformed carrier or on two separate preformed carriers of insulating material, which contacts are electrically and/or mechanically connected to the line pin and its associated conductor terminal before they are introduced into the preformed body and which are introduced into a hole or holes in the front face of the body so that they protrude into a cartridge-fuse recess in the rear face of the body with their carrier or carriers fitting tightly in the hole or holes to prevent insulating material of the plug body from entering the fuse recess when it is moulded around the preformed body, the preformed cover and the pins and conductor terminals.
  • the two electrical contacts are carried on a carrier of rectangular shape which is a tight fit in a hole of corresponding shape.
  • the walls of the hole converge towards one another in a direction towards the rear face of the preformed body and the side faces of the carrier are of complementary shape, the tightness of the fit thereby increasing as the carrier is introduced into the hole from the front face of the body.
  • One or each of the electrical contacts preferably is a spring clip for gripping a terminal of a cartridge fuse and also is preferably of such a shape and size, having regard to the size of its associated hole, that when the carrier on which the spring clip or clips is or are carried is fully home in the hole, the spring clips or clips effect a snap fit so that the carrier cannot subsequently be withdrawn.
  • the conductors of the flexible cable may be electrically connected to the conductor terminals in any convenient manner, a crimped connection being preferred.
  • the electric plug assembly comprises a preformed body 1 of moulded plastics insulating material such as urea, a preformed cover 2 of moulded plastics insulating material such as nylon which is detachably connected to the body 1 and, encapsulating the cover 2 and the body 1 in such a way that the rear face 4 of the body is exposed, a plug body (not shown) of moulded thermoplastics material which is bonded to the insulating covering 11 of a flexible cable 10.
  • the preformed body 1 has apertures 21, 22 and 23 through which protrude a line pin 24, a neutral pin 25 and earth pin 26.
  • Mechanically and electrically secured to the neutral pin 25 is a conductor terminal 28 to which the neutral conductor 14 of the flexible cable 10 is electrically connected by a crimped connection 31.
  • a conductor terminal 29 is mechanically and electrically connected to the earth pin 26 and the earth conductor 15 of the flexible cable 10 is electrically connected to the terminal 29 by a crimped connection 32.
  • a carrier 34 of moulded plastics material which carries at its opposite ends spring clips 35 and 36 located in a cartridge-fuse recess 37 in the rear face 4 of the body.
  • the walls of the hole 33 converge towards one another in a direction towards the rear face 4 of the body 1 and the side faces of the carrier 34 are of complementary shape, the tightness of the fit of the carrier in the hole thereby increasing as the carrier is introduced into the hole from the front face 5 of the body.
  • the spring clips 35 and 36 are each of such a shape and size, having regard to the size of the hole 33, that when the carrier 34 is fully home in the hole, the spring clips effect a snap fit so that the carrier cannot subsequently be withdrawn.
  • a conductor terminal 27 which is electrically connected to the spring clip 35 through a length 30 of conductor, one end of which is electrically connected to the conductor terminal 27 by a crimped connection 38 and the other end of which is electrically connected to the spring clip 35 by a crimped connection 39.
  • the line conductor 12 of the flexible cable 10 is electrically connected to the spring clip 36 by a crimped connection 40.
  • the spring clips 35 and 36 are electrically connected through a cartridge fuse 41.
  • the cartridge-fuse recess 37 in the rear face 4 of the body 1 is closed by a removable cover 42.
  • the preformed cover 2 which overlies and provides a guard for the electrical connections on the front face 5 of the preformed body 1, is detachably connected to the body 1 through stepped flexible protuberances 6, which are in snap engagement in holes 43 in the preformed body.
  • the cover 2 has inwardly directed ribs 7 which bear against the ends of the conductor terminals connected to the pins and, when the cover is connected to the body 1, serve to retain the pins in their apertures.
  • At one end of the cover 2 is an opening 9 for passage of the flexible cable 10, the cable being gripped to prevent strain from being imparted to the cable conductor connections by a separately formed cable-gripping member 45 which engages in a slot in the body 1 and is held therein by the cover 2.
  • the cover 2 provides a guard against an unconnected wire or unconnected wires of a cable conductor from being caused to protrude through the plug body (not shown) during the moulding operation.
  • the conductor terminals are connected to the pins and the cable conductor connections are made before any of these parts are mounted on or in the preformed body 1,
  • the pins 24, 25 and 26 are introduced into the apertures 21,22 and 23, and the carrier 34 with the spring clips 35, 36 mounted thereon is introduced into the hole 33 from the front face of the preformed body 1 until the pins are fully insulated and the carrier has snapped into place in the hole.
  • the cover 2 is next detachably connected to the preformed body 1, thereby retaining the pins, and the cable-gripping member 45 which has previously been applied to the flexible cable 10 and engage in the slot in the body 1, in position.
  • the assembly so formed is then placed in an appropriately shaped mould and molten thermoplastics material is injected into the mould to form a plug body which is bonded to the insulating covering 11 of the cable 10 and which fully encapsulates all the electrical connections of the plug assembly, leaving the rear face 4 of the body 1 exposed for insertion of an appropriate fuse 41 and closure by the removable cover 42 after the plug body has cooled.
  • the preformed cover 102 has a raised portion 103 to allow a clearance around the cable 104.
  • the preformed body 101 has two pairs of slots 105 and 106, each of which receives an approximately U-shaped metal spring clip 107 and 108.
  • An arm of each spring clip 107 and 108 passes through a slot of each pair of slots 105 and 106 so that the free ends of the arms protrude into a cartridge-fuse recess 109 in the rear face 110 of the preformed body 101.
  • a cartridge fuse 111 electrically connects the spring clips 107 and 108.
  • the line pin 112 is mechanically and electrically connected to one of the spring clips 107 by a strip of shaped metal sheet 113.
  • the electric plug assembly shown in Figures 5 to 7 is substantially the same as that in Figures 1 to 4.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (11)

1. Elektrische Steckeranordnung mit einem vorgeformten Körper (1) aus elektrisch isolierendem Material, mindestens zwei Steckerzapfen (24, 25) und zugehörigen Leiteranschlüssen (27, 28), die in dem vorgeformten Körper befestigt sind, wobei die Leiter eines Stückes eines flexiblen, isolierten Mehrleiterkabels (10) mit den zugehörigen Anschlüssen des Steckers elektrisch verbunden sind, und mit einem geformten Steckerkörpers aus elektrisch isolierendem Material, der vollständig oder teilweise den vorgeformten Körper und die Steckerzapfen sowie die zugehörigen Leiteranschlüsse umschließt, wobei eine geeignetes Stück jedes Zapfens von der Rückseite (4) der Steckeranordnung aus vorsteht und wobei der Steckerkörper dauerhaft mit der isolierenden Hülle (11) eines Längenabschnitts des Kabels (10) verbunden ist, dadurch gekennzeichnet, daß eine vorgeformte Abdeckung (2) aus elektrisch isolierendem Material, das wesentlich härter ist als das geformte isolierende Material des Steckerkörpers, in dem geformten Steckerkörper eingeschlossen und so geformt und so mit dem vorgeformten Körper (1) verbunden ist, daß sie an den inneren Enden von zumindest dem stromführenden und dem neutralen Zapfen (24, 25) und den zugehörigen Leiteranschlüssen (27, 28) anliegt und diese umfaßt, um diese Zapfen im vorgeformten Körper (1) fest in ihrer Lage zu halten und um einen Schutz zwischen den Anschlüssen und dem äußeren Teil des Steckerkörpers zu bilden.
2. Elektrische Steckeranordnung nach Anspruch 1, dadurch gekennzeichnet, daß die vorgeformte Abdeckung (2) an den inneren Enden aller Zapfen (24, 25, 26) und den zugehörigen Leiteranschlüssen (27, 28) anliegt und diese umfaßt.
3. Elektrische Steckeranordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die vorgeformte Abdeckung (2) anfänglich lösbar mit dem vorgeformten Körper (1) verbunden ist, in dem die Steckerzapfen und die zugehörigen Leiteranschlüsse befestigt sind.
4. Elektrische Steckeranordnung nach Anspruch 3, dadurch gekennzeichnet, daß die vorgeformte Abdeckung (2) Vorsprünge (6) aufweist, die in geeignet angeordnete Offnungen (43) oder Aussparungen in dem vorgeformten Körper (1) einrasten.
5. Elektrische Steckeranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die vorgeformte Abdeckung (2) eine obere Wand und mindestens eine Seitenwand aufweist, wobei eine Öffnung (9) in einer Seitenwand vorgesehen oder eine der Seitenwände weggelassen ist, um einen Zugang für das flexible Kabel (10) zu bilden.
6. Elektrische Steckeranordnung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die vorgeformte Abdeckung (2) oben nach innen vorstehend Ripppen (7) aufweist, die so angeordnet sind, daß sie bei Verbinden der Abdeckung mit dem vorgeformten Körper (1) an den inneren Enden der Steckerzapfen und den zugehörigen Leiteranschlüssen anliegen und diese in dem vorgeformten Körper fest in ihrer Position halten.
7. Elektrische Steckeranordnung nach einem der vorstehenden Ansprüche, bei der eine Einrichtung zum elektrischen Verbinden einer Patronensicherung zwischen dem stromführenden Zapfen und dem zugehörigen Leiteranschluß vorgesehen ist, dadurch gekennzeichnet, daß die die Patronensicherung verbindende Einrichtung zwei im Abstand angeordnete elektrische Kontakte (35, 36) aufweist, die auf einem Träger oder auf mehreren Trägern (34) befestigt sind, wobei der oder die Träger fest in eine Bohrung oder in mehrere Bohrungen (33) im vorgeformten Körper (1) eingepaßt sind und wobei die Kontakte in eine Sicherungsaussparung (37) in der rückseite des vorgeformten Körpers hineinragen.
8. Elektrische Steckeranordnung nach Anspruch 7, wobei die beiden elektrischen Kontakte der die Patronensicherung verbindenden Einrichtung auf einem einzigen vorgeformten Träger angeordnet sind, dadurch gekennzeichnet, daß der Träger (34) rechteckig ist und die Bohrung (33) im vorgeformten Körper, in die der Träger fest eingepaßt ist, eine entsprechende Form sowie Wände aufweist, die zur Rückseite
(4) des vorgeformten Körpers (1) aufeinander zulaufen, wobei die Form der Seitenflächen des Trägers dazu komplementär ist.
9. Verfahren zum Herstellen einer elektrischen Steckeranordnung nach einem der vorstehenden Ansprüche mit den folgenden Verfahrensschritten zum Herstellen der elektrischen und/oder mechanischen Verbindungen zwischen den Steckerzapfen und ihren zugehörigen Leiteranschlüssen sowie der elektrischen Verbindungen zwischen den Kabelleitern und den Leiterschlüssen:
Einführen der Steckerzapfen und ihrer zugehörigen Leiteranschlüsse mit den mit diesen elektrisch verbundenen Kabelleitern in Bohrungen und Aussparungen in der Vorderseite des vorgeformten Körpers, so daß geeignete Längen der Zapfen aus dessen Rückseite vorstehen, gekennzeichnet durch
Verbinden des vorgeformten Körpers mit einer vorgeformten Abdeckung, die im wesentlichen aus hartem, elektrisch isolierendem Material besteht und derart geformt ist, daß sie an den inneren Enden von zumindest dem stromführenden Zapfen und dem neutralen Zapfen sowie an zugehörigen Leiteranschlüssen anliegt und diese umfaßt, um die Zapfen im vorgeformten Körper fest in Position zu Halten, und
Umformen mit einem elektrisch isolierenden Material zum Ausbilden eines geformten Steckerkörpers, der vollständig oder teilweise den vorgeformten Körper, die vorgeformte Abdeckung und die Steckerzapfen sowie die zugehörigen Leiteranschlüsse umschließt und mit der isolierenden Umhüllung eines Teilstücks des flexiblen Kabels verbunden ist.
10. Verfahren zum Herstellen einer elektrischen Steckeranordnung nach Anspruch 9, dadurch gekennzeichnet, daß vor dem Verbinden der vorgeformten Abdeckung mit dem vorgeformten Körper elektrische und/oder mechanische Verbindungen zwischen zwei im Abstand angeordneten, elektrischen Kontakten, die auf einem vorgeformten Träger einer eine Patronensicherung verbindenden Einrichtung befestigt sind, und dem stromführenden Zapfen und seinem zugehörigen Anschluß hergestellt werden, und daß der Träger fest in eine Bohrung in dem vorgeformten Körper von dessen Vorderseite so eingepaßt ist, daß die zwei im Abstand angeordneten, elektrischen Kontakte in eine Sicherungsaussparung in der Rückseite des vorgeformten Körpers ragen.
EP19790300431 1979-03-19 1979-03-19 Elektrische Stecker-Anordnung Expired EP0016269B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE7979300431T DE2965835D1 (en) 1979-03-19 1979-03-19 An improved electric plug assembly
EP19790300431 EP0016269B1 (de) 1979-03-19 1979-03-19 Elektrische Stecker-Anordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790300431 EP0016269B1 (de) 1979-03-19 1979-03-19 Elektrische Stecker-Anordnung

Publications (2)

Publication Number Publication Date
EP0016269A1 EP0016269A1 (de) 1980-10-01
EP0016269B1 true EP0016269B1 (de) 1983-07-13

Family

ID=8186351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790300431 Expired EP0016269B1 (de) 1979-03-19 1979-03-19 Elektrische Stecker-Anordnung

Country Status (2)

Country Link
EP (1) EP0016269B1 (de)
DE (1) DE2965835D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2196801B (en) * 1986-10-24 1990-07-25 Crabtree Electrical Ind Ltd Electric plugs
HUT66016A (en) * 1991-06-11 1994-08-29 Multico Int Pty Ltd Improvements in fused electrical connectors
US5588876A (en) * 1991-06-11 1996-12-31 Multico International Pty. Ltd. Fused electrical connectors
BE1004948A5 (nl) * 1991-06-14 1993-03-02 Cable And Wire Assemblies Afge Stekker met smeltveiligheid.
BE1005762A3 (nl) * 1992-04-14 1994-01-18 Cable And Wire Assemblies Afge Stekker voor uk landen met een tegen stoorsignalen niet beschermd tweeaderig snoer.
JPH07135050A (ja) * 1993-09-17 1995-05-23 Hitachi Densen Kako Kk 電源プラグ
GB2302459A (en) * 1995-06-16 1997-01-15 Imi Components Limited Electrical connectors
DE102009040776A1 (de) * 2009-09-09 2011-03-10 Thomas Waible Steckerbrücke und Verfahren zur Herstellung einer Steckerbrücke
GB2483926B (en) * 2010-09-25 2015-05-13 Accessory Bits Ltd Electric power module
DE102018210621A1 (de) * 2018-06-28 2020-01-02 Robert Bosch Gmbh Elektronikmodul mit Steckeranschluss

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180955A (en) * 1961-06-08 1965-04-27 Hubbell Inc Harvey Fusible safety electrical attachment plug
GB1163085A (en) * 1966-02-18 1969-09-04 Plessey Co Ltd Improvements in or relating to Self-Latching Electrical Coupling Connectors.
DE6803416U (de) * 1968-10-23 1969-03-20 Martyn Irwin Green Elektrischer stecker
DE7025981U (de) * 1970-05-18 1970-12-10 Milanese Conduttori S P A Fab Elektrischer stecker.
CH607366A5 (de) * 1976-04-27 1978-12-15 Feller Adolf Ag Fabrik Elektri

Also Published As

Publication number Publication date
DE2965835D1 (en) 1983-08-18
EP0016269A1 (de) 1980-10-01

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