EP0539093A1 - Prise électrique - Google Patents

Prise électrique Download PDF

Info

Publication number
EP0539093A1
EP0539093A1 EP92309392A EP92309392A EP0539093A1 EP 0539093 A1 EP0539093 A1 EP 0539093A1 EP 92309392 A EP92309392 A EP 92309392A EP 92309392 A EP92309392 A EP 92309392A EP 0539093 A1 EP0539093 A1 EP 0539093A1
Authority
EP
European Patent Office
Prior art keywords
socket
shutter
plug
live
pin
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
EP92309392A
Other languages
German (de)
English (en)
Other versions
EP0539093B1 (fr
Inventor
Peter Colebrook
David Sidney Mahoney
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.)
Caradon MK Electric Ltd
Original Assignee
Caradon MK Electric Ltd
MK Electric Ltd
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 Caradon MK Electric Ltd, MK Electric Ltd filed Critical Caradon MK Electric Ltd
Publication of EP0539093A1 publication Critical patent/EP0539093A1/fr
Application granted granted Critical
Publication of EP0539093B1 publication Critical patent/EP0539093B1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • H01R13/453—Shutter or cover plate opened by engagement of counterpart
    • H01R13/4534—Laterally sliding shutter

Definitions

  • the present invention relates to an electrical socket having at least two socket contacts for connections with two or more pin contacts of a plug and a shutter for closing plug pin openings in the front wall of the socket to cover two of the contacts in the absence of the plug.
  • an electrical socket according to the invention has at least two socket contacts for connection with two or more pin contacts of a plug and a shutter for closing plug pin openings in a front wall of the socket to cover two of the contacts in the absence of the plug, wherein the shutter is latched in the closed position by means of at least a first latch operable by means of a plug earth pin or protrusion from a plug other than the live and neutral pins of said plug, and is characterised in that the first latch is formed as at least one latching member extending from the shutter which is pushed to one side by the earth pin or protrusion in a lateral direction as between the live and neutral pins so as to release the member from a stop.
  • the shutter is preferably formed with at least one lateral ramped portion to close the live and neutral openings and wherein the latching member(s) extend from the lateral portion or portions, the shutter being urged into the closed position by a spring.
  • the lateral portion may itself be provided with a second latch which requires simultaneous pressure by the live and neutral pins on the lateral portion to unlatch before the shutter can be moved in a direction from the earth pin towards the live and neutral pins.
  • a socket 1 is shown with a front wall 2 and in Figure 3 a British Standard three pin plug 3 is shown half in socket 1. It should be noted in this respect that although the arrangement is specifically designed for a British standard three pin plug having an earth pin 4, a line 5 and a neutral pin 6, the earth pin can be replaced by a suitable protrusion from a plug where only live and neutral pins are provided. Whilst rectangular pins are shown these may equally be round pins or have any other suitable shape.
  • the front wall 2 has plug pin openings 14, 15 and 16 for pins 4, 5 and 6 respectively. Socket contacts for the pins are not shown.
  • a shutter 20 which is latched in the closed position shown in Fig. 1 and Fig. 4 by means of a first latch comprising a pair of opposed latching members formed as hooks 21 and a fixed stop 22.
  • the hooks 21 which face each other are each formed as an end portion of a resilient flat web 23 extending from lateral ramped portions 25 which when the shutter is closed lie immediately below and close off openings 15 and 16.
  • Lateral portions or latching faces 25 are formed on laterally extending arms 27 which are normally inclined slightly upwards to latching edges 29.
  • Latching edges 29 latch into latching grooves 31 formed in the inner surface of the front wall 2 adjacent to openings 15 and 16 to form a second latch.
  • the hooks 21 are provided with upper chamfered edges 19 and vertical chamfered edges 18.
  • Spring 34 acts to urge the shutter into the closed position shown in Fig. 1.
  • Each arm 27 has a depressed circular area 50 if required, which if a two pin standard plug were inserted into openings 15 and 16 would catch the pins and prevent movement of the shutter away from openings 15 and 16 even if an object is inserted into opening 14 in order to release the first latch.
  • the stop 22 has recesses 35 to receive the hooks 21 in a position as shown in Fig. 6 where the opening 15 and 16 in the front wall 2 of the socket are unshuttered. These recesses 35 then allow the latching members, that is the hooks, to return in the lateral direction as between openings 15 and 16 to the situation shown in Fig. 4 before the hooks are released from the stop 22.
  • Central web 32 from which arms 27 extend and whereby the arms are mounted to the shutter is resilient so that the arms are resiliently urged upwards towards the outer surface of the front wall 2 into grooves 31.
  • Fig 3A shows a second embodiment which is a slightly modified arrangement of the shutter of Fig. 3 in which the spring 34′ engages in a recess 35 formed between webs 23′ of the hooks 21′ and central web 32′. This enables the shutter arrangement to be more compact.
  • FIG. 7 to 8 show a third embodiment in which a shutter 120 operates to open openings 115 and 116 in a direction X opposite to that in the first embodiment shown in Fig.s 1 to 6. There are certain advantages in this arrangement as will be discussed.
  • the shutter 120 is formed with arms 127 similar to arms 27 of the first embodiment except that their lateral ramped portions 125 face away from the earth pin.
  • the latching members 121 which act similarly to members 21 of the first embodiment are moved laterally outward by the earth pin 104 on initial insertion of the plug. This enables the members to clear stop 122 (see Fig. 10). Further depression of the plug results in live and neutral pins 105 and 106 acting on ramped portions 125.
  • the arms 127 are then depressed to release the arms against the resilience of central web 132 from grooves (not shown) equivalent to grooves 31 of the first embodiment.
  • pins 105 and 106 and portions 125 then causes the shutter to move towards the earth pin in direction X against spring 134 which is located between the members 121 and between fixed stop 151 formed as part of the plug moulding and end wall 152 of the shutter.
  • the shutter with members 121 unlatched from stop 122 moves to the position shown in Fig. 11 where the members return by means of their resilience to their central position with the chamfered end portions 119 lying in recesses 135 in stop 122.
  • the third embodiment also has depressed circular areas 150 similar in purpose and form to those of the first embodiment shown at 50.
  • the third embodiment has an advantage over that of the first embodiment in that because the spring 134 is located between the three pin openings 114-116 the arrangement is more compact.
  • the three embodiments have an advantage over prior known construction in that any wear of the earth pin on the shutter does not affect the unshuttering. Furthermore because unlatching on the flank of the earth pin and this does not have to move the shutter against the shutter spring, there is only s small amount of friction at the point of initial plug insertion. In order to move the shutter it is necessary to insert all three pins simultaneously. If say the earth pin or similar protrusion is not present the shutter remains latched by members 21 or 121. If either the live or neutral pin is missing then arms 27 or 127 remain latched. If a two pin plug of say the Continental European Standard is inserted and the latching members 21 or 121 are somehow forced to unlatch then the depressed areas 50 or 150 inhibit longitudinal shutter movement.
  • the construction of the shutter and its latching members as a single item keeps the cost to a minimum. All that is required for the shutter arrangements is a spring and the shutter including latching means. Any remaining parts such as the stop 22 or 122 are moulded as part of the socket assembly. For this reason also, assembly of the socket during manufacture is simple and cost effective. Furthermore, the manufacturing tolerances in the constructions shown are not too critical as is the case in many early shuttering arrangements.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Connecting Device With Holders (AREA)
  • Insulated Conductors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
EP92309392A 1991-10-23 1992-10-15 Prise électrique Expired - Lifetime EP0539093B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919122515A GB9122515D0 (en) 1991-10-23 1991-10-23 An electrical socket
GB9122515 1991-10-23

Publications (2)

Publication Number Publication Date
EP0539093A1 true EP0539093A1 (fr) 1993-04-28
EP0539093B1 EP0539093B1 (fr) 1996-01-10

Family

ID=10703421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92309392A Expired - Lifetime EP0539093B1 (fr) 1991-10-23 1992-10-15 Prise électrique

Country Status (10)

Country Link
EP (1) EP0539093B1 (fr)
JP (1) JPH06132048A (fr)
CN (1) CN1054002C (fr)
AT (1) ATE133010T1 (fr)
DE (1) DE69207546D1 (fr)
GB (2) GB9122515D0 (fr)
IN (1) IN181090B (fr)
MY (1) MY138626A (fr)
SA (1) SA92130195B1 (fr)
ZW (1) ZW17392A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646990A1 (fr) * 1993-09-29 1995-04-05 Professional General Electronic Products P.G.E.P. Perfectionnements aux dispositifs de sécurité et/ou de discrimination pour prises de courant
EP0763875A1 (fr) * 1995-09-15 1997-03-19 Schneider Electric Sa Prise électrique à détrompage
EP1137109A2 (fr) * 2000-03-23 2001-09-26 KID-Systeme GmbH Prise de courant avec dispositif de sécurité pour avions
FR2810461A1 (fr) * 2000-06-16 2001-12-21 Legrand Sa Socle de prise de courant a trois elements de contact, pourvu d'un obturateur de securite et systeme de raccordement electrique le comprenant
FR2810460A1 (fr) * 2000-06-16 2001-12-21 Legrand Sa Socle de prise de courant a trois elements de contact, pourvu d'un obturateur de securite
FR2828339A1 (fr) * 2001-08-01 2003-02-07 Legrand Sa Systeme de raccordement pour un reseau specifique de distribution de courant, et adaptateur a coiffe pour broche de terre de fiche et socle de prise correspondants
US6599141B2 (en) 2001-04-27 2003-07-29 General Dynamics Ots (Aerospace), Inc. Apparatus for providing AC power to airborne in-seat power systems

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9406048D0 (en) * 1994-03-26 1994-05-18 Tenby Ind Ltd Electrical socket
FR2823911B1 (fr) * 2001-04-23 2003-08-15 Legrand Sa Socle de prise de courant pour fiche complementaire a deux ou trois broches, equipe d'un obturateur de securite a deux volets
JP4897425B2 (ja) * 2006-10-13 2012-03-14 神保電器株式会社 扉付抜止コンセント
CN107681332A (zh) * 2017-09-22 2018-02-09 上海斐讯数据通信技术有限公司 插座保护装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1803136A1 (de) * 1968-10-15 1970-04-16 Hans Hintz Elektrische Steckdose
GB2068651A (en) * 1980-01-19 1981-08-12 Mk Electric Ltd Improvements relating to electrical socket outlets

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE423607C (de) * 1921-09-30 1926-01-08 Fabrikation Steckervorrichtung fuer elektrische Stromanschluesse
GB460731A (en) * 1935-10-23 1937-02-03 John Bristow Tucker Improvements relating to electrical plug-and-socket connectors
GB612486A (en) * 1946-05-25 1948-11-12 Crabtree & Co Ltd J A Improvements in shielded electric sockets
GB673010A (en) * 1949-11-09 1952-05-28 Crabtree & Co Ltd J A Improvements in shielded electric sockets
GB750482A (en) * 1953-07-14 1956-06-13 Telephone Mfg Co Ltd Improvements relating to electrical pin and socket connectors
GB826792A (en) * 1957-05-31 1960-01-20 Henry Allday & Son 1922 Ltd Protective means for electric circuit socket connectors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1803136A1 (de) * 1968-10-15 1970-04-16 Hans Hintz Elektrische Steckdose
GB2068651A (en) * 1980-01-19 1981-08-12 Mk Electric Ltd Improvements relating to electrical socket outlets

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0646990A1 (fr) * 1993-09-29 1995-04-05 Professional General Electronic Products P.G.E.P. Perfectionnements aux dispositifs de sécurité et/ou de discrimination pour prises de courant
FR2710787A1 (fr) * 1993-09-29 1995-04-07 Pgep Perfectionnements aux dispositifs de sécurité et/ou de discrimination pour prises de courant.
US5624270A (en) * 1993-09-29 1997-04-29 Professional General Electronic Products P.G.E.P. Safety and/or polarizing devices of electric-power connectors
EP0763875A1 (fr) * 1995-09-15 1997-03-19 Schneider Electric Sa Prise électrique à détrompage
FR2738955A1 (fr) * 1995-09-15 1997-03-21 Schneider Electric Sa Prise electrique a detrompage
DE10014500C1 (de) * 2000-03-23 2001-10-04 Kid Systeme Gmbh Schutzsteckdose mit Sicherheitsvorrichtung
EP1137109A2 (fr) * 2000-03-23 2001-09-26 KID-Systeme GmbH Prise de courant avec dispositif de sécurité pour avions
US6425773B2 (en) 2000-03-23 2002-07-30 Kid-Systeme Gmbh Electrical outlet with protective cover
EP1137109A3 (fr) * 2000-03-23 2003-11-19 KID-Systeme GmbH Prise de courant avec dispositif de sécurité pour avions
FR2810461A1 (fr) * 2000-06-16 2001-12-21 Legrand Sa Socle de prise de courant a trois elements de contact, pourvu d'un obturateur de securite et systeme de raccordement electrique le comprenant
FR2810460A1 (fr) * 2000-06-16 2001-12-21 Legrand Sa Socle de prise de courant a trois elements de contact, pourvu d'un obturateur de securite
US6599141B2 (en) 2001-04-27 2003-07-29 General Dynamics Ots (Aerospace), Inc. Apparatus for providing AC power to airborne in-seat power systems
FR2828339A1 (fr) * 2001-08-01 2003-02-07 Legrand Sa Systeme de raccordement pour un reseau specifique de distribution de courant, et adaptateur a coiffe pour broche de terre de fiche et socle de prise correspondants

Also Published As

Publication number Publication date
GB9122515D0 (en) 1991-12-04
GB2261120B (en) 1995-08-23
DE69207546D1 (de) 1996-02-22
GB9221622D0 (en) 1992-11-25
EP0539093B1 (fr) 1996-01-10
JPH06132048A (ja) 1994-05-13
ATE133010T1 (de) 1996-01-15
MY138626A (en) 2009-07-31
IN181090B (fr) 1998-04-18
CN1074311A (zh) 1993-07-14
GB2261120A (en) 1993-05-05
ZW17392A1 (en) 1993-03-10
SA92130195B1 (ar) 2004-06-09
CN1054002C (zh) 2000-06-28

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