EP0452761B1 - Fiche à contact de protection avec une plaquette de base et contact de terre à ressort - Google Patents

Fiche à contact de protection avec une plaquette de base et contact de terre à ressort Download PDF

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Publication number
EP0452761B1
EP0452761B1 EP91105482A EP91105482A EP0452761B1 EP 0452761 B1 EP0452761 B1 EP 0452761B1 EP 91105482 A EP91105482 A EP 91105482A EP 91105482 A EP91105482 A EP 91105482A EP 0452761 B1 EP0452761 B1 EP 0452761B1
Authority
EP
European Patent Office
Prior art keywords
baseplate
protective conductor
base plate
protective
headpiece
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 - Lifetime
Application number
EP91105482A
Other languages
German (de)
English (en)
Other versions
EP0452761A1 (fr
Inventor
Michael Taller
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.)
Taller GmbH
Original Assignee
Taller GmbH
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 Taller GmbH filed Critical Taller GmbH
Publication of EP0452761A1 publication Critical patent/EP0452761A1/fr
Application granted granted Critical
Publication of EP0452761B1 publication Critical patent/EP0452761B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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  
    • H01R13/655—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth brace
    • 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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • 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

  • the present invention relates to a safety plug for electrical devices that can be connected to a mains socket.
  • Plugs of this type are known from EP-A-0 391 298 and FR-A-2 538 625, which belong to the state of the art under Article 54 (3) EPC and on the whole have also proven themselves.
  • such protective contact plugs have the task of handling an electrical device, i.e. the connection of this device when plugging the connector into the power outlet does not become a danger that people may be at risk due to a so-called earth fault.
  • the manufacture and design of the safety plug are subject to strict requirements and regulations. In modern, especially automated mass production, special attention should be paid to ensuring that the conductor connections, i.e. the current conductors and the protective conductors, which are connected to the plug and which establish the electrical connection between the power plant on the one hand and the device on the other hand, provide a sufficient safety distance Outside of the safety plug. Finally, there is a risk that individual wires of the conductor during manufacture when inserted into the bores of the hollow cylindrical connecting pins or Bend and tilt the connection sockets so that they protrude outwards from the finished plug. If this is not noticed, it can happen that the possibly protruding individual wires protrude through the surface of the molded injection plug or are so close to the outside that an earth fault occurs during handling.
  • the person who plugs the plug into the socket can suffer health damage that can even lead to death.
  • the finished earthing contact plugs are individually checked for their electrical safety using so-called contour testing devices.
  • the plug is inserted into a test form corresponding to its shape and electrically charged from the outside.
  • plugs with individual wires that stand outwards or are too close apart can be eliminated.
  • this is associated with significant production costs, i.e. Testing costs.
  • the known plugs only partially solve the problems mentioned. Although they have funnel-shaped insertion aids, which are incorporated into L-shaped molded parts, individual wires of the strands to be inserted are kinked, rolled up or otherwise bent if the insertion funnel is missed during assembly. The reason for this lies in the shape and arrangement of the horizontal section of the L-shaped molded part.
  • the insertion funnel is sunk in a flat plate or as a tube with an inner cone on a flat plate. In both cases, the unthreaded wires hit the flat surface next to the insertion funnel almost vertically in order to be deformed there. These rolled up and kinked wires jam with the strand insulation during further insertion in the corresponding insertion funnel. In many cases, the insertion is terminated prematurely. As a result, the unthreaded wires continue to protrude and the crimping is not secure.
  • the plug bridge 1 consists of a substantially flat, approximately diamond-shaped (see top view) base plate 20 made of hard-elastic plastic, and a grounding spring 30 which is positively and non-positively clamped on two diametrically opposite connection sides of the diamond sides of the base plate 20 which abut one another (see reference number 31 ) and runs across the underside 21 of the base plate 20 (see reference numeral 32).
  • the earthing spring 30 protrudes on both sides over the upper side 22 of the base plate 20, in such a way - see basic view - that vertically protruding legs 33, 34 result, between which a free space 11 is defined on the upper side 22 of the base plate 20.
  • One leg 33 of the earthing spring 30 forms a flat side web for said free space 11; the second leg 34 of the grounding spring 30 is formed and deformed so that a connection socket 35 is formed for the protective conductor connection.
  • the transverse clasp 32 of the earthing spring 30 has a tab 36 which, when the earthing spring 30 is installed, engages through a corresponding slot in the base plate 20 and is bent (see supervision).
  • the jumper 1 described so far is equipped electrically as follows:
  • the base plate 20 protrude at a standardized distance from one another and with a standardized length contact pins 40, 41 with which the plug is ultimately inserted into a mains socket.
  • the contact pins 40, 41 are seated in corresponding holes in the base plate 20 and they are (at the second end) extended to the rear so far that they protrude in the form of hollow cylindrical connecting pins 42, 43 into the interior of the space 11 between the legs 33, 34 of the grounding spring 30 .
  • the current conductors of a consumer line are mechanically connected, in particular clamped or crimped, with these connecting pins 42, 43.
  • the electrical system is ultimately formed by the protective conductor connected to the connecting socket 35 of the earthing spring 30 and the current conductor connected to the connecting pins 42, 43 of the contact pins 40, 41.
  • the pins 42, 43 of the current conductor and the connecting socket 35 for the protective conductor are arranged approximately in a triangle with respect to one another, the connecting line of the connecting pins 42, 43 being directed perpendicular to the axis of the transverse web 32 of the earthing spring 30.
  • the plug bridge 1 described so far is state of the art.
  • the problems mentioned at the outset can occur, i.e. in the case of individual wires protruding from the side, it can happen that these extend outwards to, possibly even through the sprayed plug head.
  • the plug bridge 1 is designed and / or developed as explained and described below.
  • An L-shaped molded part 50 projecting over this connecting socket 35 is injection-molded onto the connecting socket 35 for the protective conductor, preferably as an integral part of the injection mold for the base plate 20.
  • This molded part 50 protrudes beyond the connector socket 35 and forms together with a support foot 51 together with the base plate 20 an integral mounting base.
  • connection socket 35 for the protective conductor is thus completely bridged, the head part 52 which is kinked at the free front edge by the L-leg of the molded part 50 lying opposite this connection socket 35.
  • An essential feature of the head part 52 of the molded part 50 is a conical through hole which is aligned coaxially with the connecting socket 35 for the protective conductor is. The small diameter of this through hole lies opposite the end face of the connecting socket 35, so that it merges into a funnel-shaped extension toward the free side of the head part 52 of the shaped part 50.
  • the stripped cable end of the protective conductor can be inserted easily and safely via this funnel-shaped extension and without a single wire of the protective conductor being bent.
  • the material thickness of the head part 52 is selected at least so that - depending on the length of the insulation stripped from the protective conductor - this single wire is securely behind the upper edge of the through hole and thus the head part 52 disappears.
  • the protective conductor can thus be securely inserted and fixed with the aid of the molded part 50 or the conical through hole, for example by squeezing (crimping).

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (1)

  1. Fiche à contact de protection pour des appareils électriques à raccorder à une prise au secteur,
    avec un socle (20) essentiellement plan et avec un ressort de mise à la terre (30) dont les deux côtés diamétralement opposés dépassent le socle ; ce ressort de mise à la terre, attaché au socle par clip, est destiné à recevoir et à fixer le fil de protection d'une ligne de consommation à trois conducteurs ;
    les extrémités des fils de cette ligne de consommation étant dénudées, introduites dans des douilles de raccord et reliées avec celles-ci, particulièrement par sertissage ;
    le socle avec le ressort de mise à la terre et une extrémité de la ligne de consommation étant couverts de matière plastique dans une matrice d'extrusion ;
    la douille de raccord (35) du fil de protection faisant corps avec l'extrémité conjuguée de ressort dépassant le socle ;
    à cette douille de raccord s'ajoute un cône d'entrée orienté coaxialement et muni d'un trou de passage conique ; ce cône est constitué par une pièce (50) (à peu près en L) qui recouvre la douille de raccord (35) et qui est intégrée dans le socle ;
    la pièce en L (50) étant composée d'une pièce d'appui (51) et d'une pièce de tête (52) comprenant le cône d'entrée ;
    sachant que le diamètre de la partie cylindrique de la pièce de tête (52) correspond à la largeur de la pièce d'appui (51) et que la hauteur de la partie cylindrique de la pièce de tête (52) correspond au moins à la double épaisseur de la partie en barrette de la pièce de tête (52).
EP91105482A 1990-04-20 1991-04-06 Fiche à contact de protection avec une plaquette de base et contact de terre à ressort Expired - Lifetime EP0452761B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012583 1990-04-20
DE4012583A DE4012583C2 (de) 1990-04-20 1990-04-20 Schutzkontaktstecker mit Grundplatte und Erdungsfeder

Publications (2)

Publication Number Publication Date
EP0452761A1 EP0452761A1 (fr) 1991-10-23
EP0452761B1 true EP0452761B1 (fr) 1995-06-28

Family

ID=6404717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105482A Expired - Lifetime EP0452761B1 (fr) 1990-04-20 1991-04-06 Fiche à contact de protection avec une plaquette de base et contact de terre à ressort

Country Status (3)

Country Link
EP (1) EP0452761B1 (fr)
AT (1) ATE124577T1 (fr)
DE (2) DE4012583C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543235C1 (de) * 1995-11-10 1996-12-19 Taller Gmbh Schutzkontaktstecker mit einer Einführhilfe für die Anschlußbuchse des Schutzleiters

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391298A2 (fr) * 1989-04-07 1990-10-10 Taller GmbH Connecteur à contact de protection et à une aide d'entrée coordonnée à une douille de raccordement pour le contact de protection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538625A1 (fr) * 1982-12-23 1984-06-29 Cemrep Fiche a broches pour prise de courant electrique
DE8318328U1 (de) * 1983-06-24 1983-11-17 Taller GmbH Metall- und Kunststofftechnik, 7517 Waldbronn Kontaktträger für einen Schutzkontaktstecker
DE3807716C3 (de) * 1988-03-09 1997-01-16 Taller Gmbh Steckerbrücke für einen Schutzkontaktstecker mit hohlzylindrischen Anschlußstiften für die Stromleiter und den Schutzleiter
DE8817241U1 (de) * 1988-03-09 1995-05-11 Taller Gmbh, 76337 Waldbronn Schutzkontaktstecker mit Steckerbrücke und hohlzylindrischen Anschlußstiften für die Stromleiter und den Schutzleiter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391298A2 (fr) * 1989-04-07 1990-10-10 Taller GmbH Connecteur à contact de protection et à une aide d'entrée coordonnée à une douille de raccordement pour le contact de protection

Also Published As

Publication number Publication date
DE4012583C2 (de) 1996-11-28
EP0452761A1 (fr) 1991-10-23
DE4012583A1 (de) 1991-10-24
ATE124577T1 (de) 1995-07-15
DE59105823D1 (de) 1995-08-03

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