EP0539093B1 - Elektrische Steckdose - Google Patents
Elektrische Steckdose Download PDFInfo
- Publication number
- EP0539093B1 EP0539093B1 EP92309392A EP92309392A EP0539093B1 EP 0539093 B1 EP0539093 B1 EP 0539093B1 EP 92309392 A EP92309392 A EP 92309392A EP 92309392 A EP92309392 A EP 92309392A EP 0539093 B1 EP0539093 B1 EP 0539093B1
- 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.)
- Expired - Lifetime
Links
Images
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 (see for example NL-A-11363).
- 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)
Claims (11)
- Elektrische Steckdose (1) mit mindestens zwei Steckdosenkontakten für die Verbindung mit zwei oder mehreren Stiftkontakten eines Steckers (3) und einem Verschluß (20) für das Schließen von Steckerstiftöffnungen in einer Frontwand (2) der Steckdose zur Abdeckung von zwei der Kontakte bei gezogenem Stecker, worin der Verschluß in der Schließstellung verriegelt ist mittels mindestens einer ersten Verriegelung (21, 22), die durch einen Steckerschutzkontaktstift oder Vorsprung (4) aus einem Stecker außer durch die stromführenden und Nulleiterstifte (5, 6) des Steckers betätigbar ist, dadurch gekennzeichnet, daß die erste Verriegelung (21, 22) als mindestens ein sich von dem Verschluß erstreckendes Verriegelungsglied (21) ausgebildet ist, welches durch den Schutzkontaktstift oder Vorsprung (4) zu einer Seite in einer Querrichtung wie zwischen den stromführenden und Nullleiterstiften (5, 6) geschoben wird, um das Glied von einem Anschlag zu entriegeln.
- Steckdose nach Anspruch 1, worin anfängliche Einführung des Schutzkontaktstiftes (4) zur Entriegelung des Verriegelungsgliedes (21) oder der -glieder von dem Anschlag zu keiner Bewegung des Verschlusses (20) in einer Richtung parallel zur Mittellinie des Steckers (3) senkrecht zu der Linie zwischen der Mitte der Öffnungen in der Frontwand der Steckdose für die stromführenden und Nulleiterstiftkontakte (5, 6) führt.
- Steckdose nach Anspruch 1 oder 2, worin der Verschluß (20) mit mindestens einem seitlich abgeschrägten Bereich (25) geformt ist, um die stromführenden und Nulleiteröffnungen (15, 16) in der Frontwand zu schließen, und worin das Verriegelungsglied (21) oder die -glieder sich von dem seitlichen Bereich oder den Bereichen erstrecken, wobei der Verschluß (20) durch eine Feder (34) in Position gedrängt ist.
- Steckdose nach einem der Ansprüche 1 bis 3, worin der seitliche Bereich (25) oder die Bereiche an Armen (27) ausgebildet sind, die durch eine zweite Verriegelung in der Schließstellung verriegelt sind, wobei die zweite Verriegelung (29, 31) durch die stromführenden und Nulleiterstifte (5, 6) des Steckers betätigbar ist.
- Steckdose nach Anspruch 4, worin die zweite Verriegelung (29, 31) Kanten (29) an den Armen (27) und Nuten (31) in der Steckdose umfaßt, in welche die Kanten (29) in der Schließstellung eingreifen.
- Steckdose nach Anspruch 4 oder 5, worin die Arme (27) sich seitlich von einem elastischen mittleren Stegbereich (32) erstrecken.
- Steckdose nach einem der Ansprüche 4 bis 6, worin die Arme (27) so an dem Verschluß (20) angebracht sind, daß sie elastisch aufwärts zur Außenfläche der Frontwand hin beaufschlagt sind.
- Steckdose nach einem der Ansprüche 1 bis 7, worin der Anschlag (22) eine Ausnehmung oder Ausnehmungen (35) aufweist zur Aufnahme des Verriegelungsgliedes oder der -glieder in einer Position, in welcher die Öffnungen in der Frontwand der Steckdose unverschlossen sind, und so um dem Verriegelungsglied oder dengliedern zu ermöglichen zurückzukehren in der seitlichen Richtung im wesentlichen zu einer Situation, die vor der Entrieglung von dem Anschlag (22) eingenommen war.
- Steckdose nach einem der Ansprüche 4 bis 8, worin die Arme (27) mit ihren Kanten (29) durch Einführen der stromführenden und Nulleiterstifte (5, 6) abwärts gedrückt werden, um den Eingriff mit den Nuten aufzuheben, wodurch dem Verschluß (20) ermöglicht wird, sich rückwärts von einer Öffnung in der Frontwand der Steckdose für den Schutzkontaktstift oder Vorsprung (4) wegzubewegen, und worin sich der Anschlag zwischen den Öffnungen (14) für den Schutzkontaktstift oder Vorsprung (4) und denen (15, 16) für die stromführenden und Nulleiterstifte (5, 6) befindet.
- Steckdose nach einem der Ansprüche 4 bis 8, worin die Arme (27) mit ihren Kanten (29) durch Einführen der stromführenden und Nulleiterstifte (5, 6) abwärts gedrückt werden, um den Eingriff mit den Nuten aufzuheben, wodurch dem Verschluß ermöglicht wird, sich vorwärts zu einer Öffnung in der Frontwand (2) der Steckdose für den Schutzkontaktstift oder Vorsprung (4) hinzubewegen, und worin sich der Anschlag (22) in einer Postition benachbart der Seite der Öffnungen (14) für den Schutzkontaktstift oder Vorsprung (4) befindet, die derjenigen Seite entgegengesetzt ist, die den Öffnungen (15, 16) für die stromführenden und Nulleiterstifte (5, 6) nächstgelegen ist.
- Steckdose nach Anspruch 3, worin die Feder (34) eine Schraubendruckfeder ist, die zwischen zwei der Verriegelungsglieder und einem der Öffnung (14) für den Schutzkontaktstift oder Vorsprung (4) benachbarten Teil der Steckdose angeordnet ist.
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 EP0539093A1 (de) | 1993-04-28 |
EP0539093B1 true EP0539093B1 (de) | 1996-01-10 |
Family
ID=10703421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92309392A Expired - Lifetime EP0539093B1 (de) | 1991-10-23 | 1992-10-15 | Elektrische Steckdose |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0539093B1 (de) |
JP (1) | JPH06132048A (de) |
CN (1) | CN1054002C (de) |
AT (1) | ATE133010T1 (de) |
DE (1) | DE69207546D1 (de) |
GB (2) | GB9122515D0 (de) |
IN (1) | IN181090B (de) |
MY (1) | MY138626A (de) |
SA (1) | SA92130195B1 (de) |
ZW (1) | ZW17392A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2710787B1 (fr) * | 1993-09-29 | 1995-12-08 | Pgep | Perfectionnements aux dispositifs de sécurité et/ou de discrimination pour prises de courant. |
GB9406048D0 (en) * | 1994-03-26 | 1994-05-18 | Tenby Ind Ltd | Electrical socket |
FR2738955B1 (fr) * | 1995-09-15 | 1997-10-24 | Schneider Electric Sa | Prise electrique a detrompage |
DE10014500C1 (de) * | 2000-03-23 | 2001-10-04 | Kid Systeme Gmbh | Schutzsteckdose mit Sicherheitsvorrichtung |
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 |
FR2810461B1 (fr) * | 2000-06-16 | 2003-01-17 | 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 |
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 |
US6599141B2 (en) | 2001-04-27 | 2003-07-29 | General Dynamics Ots (Aerospace), Inc. | Apparatus for providing AC power to airborne in-seat power systems |
FR2828339B1 (fr) * | 2001-08-01 | 2006-09-01 | 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 |
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 |
Family Cites Families (8)
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 |
DE1803136A1 (de) * | 1968-10-15 | 1970-04-16 | Hans Hintz | Elektrische Steckdose |
GB2068651B (en) * | 1980-01-19 | 1983-08-24 | Mk Electric Ltd | Electrical socket outlets |
-
1991
- 1991-10-23 GB GB919122515A patent/GB9122515D0/en active Pending
-
1992
- 1992-10-15 DE DE69207546T patent/DE69207546D1/de not_active Expired - Lifetime
- 1992-10-15 AT AT92309392T patent/ATE133010T1/de not_active IP Right Cessation
- 1992-10-15 GB GB9221622A patent/GB2261120B/en not_active Revoked
- 1992-10-15 IN IN636MA1992 patent/IN181090B/en unknown
- 1992-10-15 EP EP92309392A patent/EP0539093B1/de not_active Expired - Lifetime
- 1992-10-20 MY MYPI92001894A patent/MY138626A/en unknown
- 1992-10-22 JP JP4308210A patent/JPH06132048A/ja active Pending
- 1992-10-23 CN CN92112686A patent/CN1054002C/zh not_active Expired - Lifetime
- 1992-10-23 ZW ZW173/92A patent/ZW17392A1/xx unknown
-
1993
- 1993-10-26 SA SA92130195A patent/SA92130195B1/ar unknown
Also Published As
Publication number | Publication date |
---|---|
JPH06132048A (ja) | 1994-05-13 |
IN181090B (de) | 1998-04-18 |
GB2261120B (en) | 1995-08-23 |
GB2261120A (en) | 1993-05-05 |
GB9122515D0 (en) | 1991-12-04 |
CN1074311A (zh) | 1993-07-14 |
ZW17392A1 (en) | 1993-03-10 |
CN1054002C (zh) | 2000-06-28 |
ATE133010T1 (de) | 1996-01-15 |
DE69207546D1 (de) | 1996-02-22 |
MY138626A (en) | 2009-07-31 |
SA92130195B1 (ar) | 2004-06-09 |
EP0539093A1 (de) | 1993-04-28 |
GB9221622D0 (en) | 1992-11-25 |
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