EP0015760A1 - Elektrische Steckeranordnung und Verfahren zur Herstellung solch einer Anordnung - Google Patents

Elektrische Steckeranordnung und Verfahren zur Herstellung solch einer Anordnung Download PDF

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Publication number
EP0015760A1
EP0015760A1 EP19800300699 EP80300699A EP0015760A1 EP 0015760 A1 EP0015760 A1 EP 0015760A1 EP 19800300699 EP19800300699 EP 19800300699 EP 80300699 A EP80300699 A EP 80300699A EP 0015760 A1 EP0015760 A1 EP 0015760A1
Authority
EP
European Patent Office
Prior art keywords
preformed
pins
front face
conductor terminals
moulded
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.)
Granted
Application number
EP19800300699
Other languages
English (en)
French (fr)
Other versions
EP0015760B1 (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 AT80300699T priority Critical patent/ATE3925T1/de
Publication of EP0015760A1 publication Critical patent/EP0015760A1/de
Application granted granted Critical
Publication of EP0015760B1 publication Critical patent/EP0015760B1/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
    • 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
    • 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
    • H01R13/56—Means for preventing chafing or fracture of flexible leads at outlet from coupling part
    • H01R13/567—Traverse cable outlet or wire connection
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth pin, blade or socket
    • 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
    • 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
    • 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
    • H01R24/30—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable with additional earth or shield contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members

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 wholly or partially encapsulates the preformed. body and the plug pins and associated conductor terminals with an appropriate length of each pin protruding from the plug assembly and is permanently bonded to the insulating covering of a part of the length of cable.
  • Electric plug assemblies of this kind will hereinafter, for convenience, be referred to as "of the kind described”.
  • Three pin electric plug assemblies of the kind described are especially suitable for use with domestic appliances because such appliances can be sold to the public with the electric plug permanently bonded to the flexible cable of an appliance, thereby eliminating the risk that an unskilled user of an appliance may connect a conventional three pin plug to an end of the flexible cable of the appliance in an incorrect manner which, when the appliance is used, may result in injury to the user and/or permanent damage to the appliance.
  • the improved electric plug assembly of the kind described comprises a preformed body of electrically insulating material having holes therethrough in which are fitted plug pins which protrude from the rear face of the preformed body and each of which has'at least one shoulder bearing against the front face of the preformed body to limit the extent of protrusion of the pin; a preformed spider of electrically insulating material which is supported by a plurality of limbs on, and is connected to, the front face of the preformed body and which has protrusions bearing against parts of the plug pins protruding from the front face of the preformed body and/or against the conductor terminals or fuse contact associated with the pins to hold the pins in position in the holes with the shoulders bearing against the front face of the preformed body; an inner moulded body of electrically insulating material wholly encapsulating at least the conductor terminals associated with the line and neutral pins, and preferably the conductor terminals associated with all the plug pins; and an outer moulded body of electrically insulating
  • the preformed spider is detachably connected to the preformed body and, in a preferred embodiment, the preformed spider has protuberances which are snap fits in appropriately located holes or recesses in'the preformed body.
  • the preformed spider is preferably of an insulating material which is harder than the insulating materials of the inner and outer moulded bodies and which may be the same material as that of the preformed body.
  • the preformed spider is preferably of a material which will withstand a test temperature of at least 750°C.
  • Preferred materials of which the preformed spider may be made include a glass-filled polyester and nylon.
  • an inner moulded body of an insulating material which wholly encapsulates at least the line and neutral terminals and which thereby lies between them and the.outer moulded body eliminates or substantially reduces the risk that a conductor wire or conductor wires may protrude through the moulded plug body.
  • the material of the inner moulded body is bonded to the preformed spider.
  • the material of the outer moulded body is bonded to the material of the inner moulded body.
  • the outer moulded body is of urea or polyester
  • the inner moulded body is of nylon, polyvinyl chloride or polyester.
  • the inner moulded body may be of a colour different and readily distinguishable from that of the outer moulded body.
  • the invention also includes an improved method of manufacturing an improved electric plug assembly as hereinbefore described, which method comprises effecting the electrical and/ or mechanical connections between the plug pins and their associated conductor terminals and the electrical connections between the conductors of the flexible cable and the conductor terminals; introducing the plug pins, with the cable conductors electrically connected to the conductor terminals associated with the pins, into holes extending through the preformed body from the front face thereof so that shoulders on the pins bear against the front face of the preformed body and appropriate lengths of the pins protrude from the rear face thereof; connecting to the front face of the preformed body a preformed spider of electrically insulating material which has aplurality of limbs supported on the front face and which has protrusions bearing against parts of the pins protruding from the front face of the preformed body and/or against the associated conductor terminals or fuse contact to hold the pins in position in the body with the shoulders bearing against the front face of the preformed body; moulding-electrically insulating material around at least
  • the outer moulded body is moulded by an injection moulding technique but where, as preferred, the inner moulded body is to be made of nylon or other insulating material that is of low viscosity at the temperature at which it is to be moulded, preferably, to avoid risk'of the material injected under pressure from flowing through the spaces between the pins and the walls of the holes in the preformed body through which they protrude, the inner body is moulded by a gravity or low pressure moulding technique.
  • the preformed body may have, upstanding from its front face, a wall which surrounds the holes in the preformed body for reception of the plug pins and surrounds the-conductor terminals associated with the plug pins and which has a gap or aperture therethrough for entry of the cable conductors, the wall being of such a height. that it upstands beyond the conductor terminals.
  • Gravity or low pressure moulding of the inner moulded body is effected by supporting the preformed body in such a way that the wall upstanding from the front face is substantially vertical and pouring molten insulating material into the space bounded by the wall to encapsulate wholly the conductor terminals.
  • ⁇ a multiplicity of such preformed bodies, with plug pins and-their associated conductor terminals mounted therein, are supported with said upstanding wall substantially vertical on an indexing table or conveyor and are caused to travel in turn past a station at which molten insulating material is poured into the space bounded by the wall.
  • a part of the upstanding wall bounding the gap or aperture in the wall for entry of the cable conductors to the conductor terminals may constitute at least a part of a cable gripping member which serves to reduce the risk of strain being imparted through the cable to the electrical connections of the cable conductors when tension is applied to the cable in such a direction as to pull the cable away from the preformed body.
  • the conductors of the flexible cable may be electrically connected to the conductor terminals in any convenient manner, a crimped connection being preferred.
  • 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 one of the line pins 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 faco 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 inner moulded body from entering the fuse recess when it is moulded around the 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 toward 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 clip or clips effect a snap fit so that the carrier cannot subsequently be withdrawn.
  • the-,wall upstanding from the front face of the preformed body and surrounding the conductor terminals also surrounds those parts of the electrical contacts for a cartridge fuse which protrude from the front face of the preformed body and the electrical connections thereto, so that the insulating material of the inner body poured into the space bounded by the wall will also wholly encapsulate said parts of the electrical contacts for a cartridge fuse and the electrical connections thereto.
  • the preformed body 1 of moulded plastics material has extending through the body three holes in which two line pins 4 and an earth pin 5, each of hollow form, are inserted from the front face 2 of the body so that they protrude from the 'rear face 3 of the body with shoulders 6, 7 on the pins bearing against the front face.
  • the live conductor 11 of a flexible cable 10 is connected by a crimped connection 14 to one spring contact 15 of a pair of spring contacts which project into a cartridge fuse recess 16 in the rear face 3 of the preformed body 1;
  • the neutral conductor 12 of the cable is connected by a crimped connection 17 to the neutral line pin 4;
  • the earth conductor 13 of the cable is connected by a crimped connection 18 to the earth pin 5.
  • the live line pin 4 is connected direct to the other of the spring contacts 15.
  • a preformed spider 20 of moulded plastics material is supported by a limb 21 and side limbs 22 on the front face 2 of the preformed body 1, the side limbs making snap-fits in holes 19 in the preformed body.
  • the spider 20 has on its inner surface protrusions 23 which bear against parts of the earth pin and both line pins and their associated conductor terminals and spring contact to urge the shoulders 6, 7 against the front face 2 of the preformed body 1, so that appropriate lengths of the pins protrude from the rear face 3 of the body.
  • An inner moulded body 24 of electrically insulating material wholly encapsulates all the crimped connections and is bonded to the preformed spider 20.
  • An outer moulded body 25 of electrically insulating material wholly encapsulates and is bonded to the inner moulded body 24 and is bonded to the sheath of an adjacent 'part of the flexible cable 10.
  • the.preformed body 31 and preformed spider 50 are substantially identical to the preformed body 1 and preformed spider 20 shown in Figure 1 except that the preformed body 31 has, upstanding from its front face 32, a wall 38 which surrounds all the conductor terminals associated with the plug pins 34, 35 and which has a gap 39 in it for entry of the cable conductors of a flexible cable-40.
  • the wall 38 is of such a height that it upstands beyond the conductor terminals.
  • Gravity or low pressure moulding of an inner moulded body on the preformed body,31 is effected by supporting the preformed body in such a way that the wall 38 is substantially vertical and pouring molten insulating material into the space bounded by the wall to encapsulate wholly the conductor terminals.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP19800300699 1979-03-07 1980-03-06 Elektrische Steckeranordnung und Verfahren zur Herstellung solch einer Anordnung Expired EP0015760B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80300699T ATE3925T1 (de) 1979-03-07 1980-03-06 Elektrische steckeranordnung und verfahren zur herstellung solch einer anordnung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB7908033 1979-03-07
GB7908033 1979-03-07
GB7921692 1979-06-21
GB7921692 1979-06-21

Publications (2)

Publication Number Publication Date
EP0015760A1 true EP0015760A1 (de) 1980-09-17
EP0015760B1 EP0015760B1 (de) 1983-06-22

Family

ID=26270821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800300699 Expired EP0015760B1 (de) 1979-03-07 1980-03-06 Elektrische Steckeranordnung und Verfahren zur Herstellung solch einer Anordnung

Country Status (5)

Country Link
EP (1) EP0015760B1 (de)
DE (1) DE3063819D1 (de)
HK (1) HK46984A (de)
MY (1) MY8500355A (de)
SG (1) SG10584G (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228148A (en) * 1988-12-21 1990-08-15 Duraplug Elect Ltd Electric plugs
GB2250643A (en) * 1990-11-22 1992-06-10 Mk Electric Ltd An electrical plug
FR2699744A1 (fr) * 1992-12-22 1994-06-24 Itw Fastex Italia Spa Groupe boîte à bornes-câbles, en particulier pour l'alimentation électrique d'appareils électroménagers.
ES2102940A1 (es) * 1994-04-13 1997-08-01 Cablerias Conductoras Sa Dispositivo de conexionado electrico por enchufe.
GB2370163A (en) * 2000-12-15 2002-06-19 Taller Gmbh Plug bridge for non-rewirable plug
EP4322338A1 (de) * 2022-08-04 2024-02-14 UNGER Kabel-Konfektionstechnik GmbH Steckerbrückenrohling, steckerbrücke sowie verfahren zum herstellen einer steckerbrücke

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1534882A (fr) * 1967-06-21 1968-08-02 Kabel Metallwerke Ghh Douille à fiche de branchement en particulier pour bougie d'allumage et analogues
DE7500393U (de) * 1975-01-09 1975-06-12 Jaeger E Elektromechanik Stecker, insbesondere Europastecker
DE2532872A1 (de) * 1975-07-23 1977-02-10 Reinshagen Kabelwerk Gmbh Elektrische steckvorrichtung und verfahren zu ihrer herstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1534882A (fr) * 1967-06-21 1968-08-02 Kabel Metallwerke Ghh Douille à fiche de branchement en particulier pour bougie d'allumage et analogues
DE7500393U (de) * 1975-01-09 1975-06-12 Jaeger E Elektromechanik Stecker, insbesondere Europastecker
DE2532872A1 (de) * 1975-07-23 1977-02-10 Reinshagen Kabelwerk Gmbh Elektrische steckvorrichtung und verfahren zu ihrer herstellung

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228148A (en) * 1988-12-21 1990-08-15 Duraplug Elect Ltd Electric plugs
GB2228148B (en) * 1988-12-21 1993-06-30 Duraplug Elect Ltd Electric plugs
GB2250643A (en) * 1990-11-22 1992-06-10 Mk Electric Ltd An electrical plug
GB2250643B (en) * 1990-11-22 1995-01-18 Mk Electric Ltd An electrical plug
FR2699744A1 (fr) * 1992-12-22 1994-06-24 Itw Fastex Italia Spa Groupe boîte à bornes-câbles, en particulier pour l'alimentation électrique d'appareils électroménagers.
ES2102940A1 (es) * 1994-04-13 1997-08-01 Cablerias Conductoras Sa Dispositivo de conexionado electrico por enchufe.
GB2370163A (en) * 2000-12-15 2002-06-19 Taller Gmbh Plug bridge for non-rewirable plug
GB2370163B (en) * 2000-12-15 2005-05-25 Taller Gmbh A plug bridge
EP4322338A1 (de) * 2022-08-04 2024-02-14 UNGER Kabel-Konfektionstechnik GmbH Steckerbrückenrohling, steckerbrücke sowie verfahren zum herstellen einer steckerbrücke

Also Published As

Publication number Publication date
SG10584G (en) 1985-01-04
HK46984A (en) 1984-06-08
EP0015760B1 (de) 1983-06-22
DE3063819D1 (en) 1983-07-28
MY8500355A (en) 1985-12-31

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