EP0582616B1 - Electric socket with improved disconnection characteristics - Google Patents

Electric socket with improved disconnection characteristics Download PDF

Info

Publication number
EP0582616B1
EP0582616B1 EP92909315A EP92909315A EP0582616B1 EP 0582616 B1 EP0582616 B1 EP 0582616B1 EP 92909315 A EP92909315 A EP 92909315A EP 92909315 A EP92909315 A EP 92909315A EP 0582616 B1 EP0582616 B1 EP 0582616B1
Authority
EP
European Patent Office
Prior art keywords
pushing
receiving part
pushing plate
electric socket
plug
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
EP92909315A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0582616A1 (en
Inventor
Attila Murlasits
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.)
PRODAX KFT
Original Assignee
PRODAX KFT
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 PRODAX KFT filed Critical PRODAX KFT
Publication of EP0582616A1 publication Critical patent/EP0582616A1/en
Application granted granted Critical
Publication of EP0582616B1 publication Critical patent/EP0582616B1/en
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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only
    • 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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/76—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall
    • H01R24/78—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall with additional earth or shield contacts

Definitions

  • the present invention refers to an electric socket for realizing electric connection of a consumer with an electric network by the means of a plug, wherein the electric socket comprises means for facilitating the removal of the plug, i.e. the step of disconnecting the socket and the plug.
  • the proposed socket shows improved application features when the plug should be removed therefrom.
  • the electric sockets of known designs comprise connecting cheeks which are pressed to the pins of the plug inserted into a depression prepared in the socket.
  • the pressure exerted by the cheeks ensures that the plug can be removed from the electric socket by applying a force in a range defined by a minimal and a maximal nominal value. This value is increased by the friction between the plug and the walls of the depression of the socket which is rather difficult to determine.
  • Most of the constructions have the disadvantage that the force exerted by one hand of a user may be not sufficient for overcoming the opposition of the plug because with the other hand the socket should be kept in position. Hence, the socket is exposed to high pulling force and this can be compensated by applying ears or tongues fixing the electric socket against the surface of a box built-in into a wall.
  • the US-PS No. 4,114,969 shows a socket comprising a spring wherein by inserting the plug the spring is compressed and the elastic power deliberated during removal facilitates this step.
  • a similar construction is described in the EP-PS No. 0,203,808. This solution ensures relatively low elastic force which can be sufficient for the American type sockets and plugs but many times is not sufficient when applying European type elements, especially when the electric socket is prepared for grounded installations.
  • the US-PS 4,042,292 corresponding to the preamble of claim 1, discloses another proposal for facilitating the removal of plugs of small and middle size household apparatuses from electric sockets.
  • the socket is completed according to this patent by a tilting plate arranged in the form of an angle lever whereon the plug inserted is supported.
  • the problem is that the tilting plate is rather thick. The thicker the tilting plate, the easier to remove the plug but the shorter the effective length of the pins of the plug.
  • thickness of the lever can be reduced by applying high strength materials which are regularly either expensive plastics, composites or metals. The first possibility is not acceptable because of the costs, and the second one with regard to safety problems.
  • the object of the present invention is to realize a construction for electric sockets which is free of the disadvantages mentioned above, i.e. offers the possibility of easy, "one-hand” removal of the plug without the danger of drawing out the electric socket from the box and thereby excludes the possibility of making the electric conductors attainable either those connected to the socket or those mounted into the interior of the plug.
  • the invention is based on the recognition that for facilitating the removal of the plug from an electric socket a force should be applied which has direction opposite to the direction of the movement of the plug during removal.
  • a force should be applied which has direction opposite to the direction of the movement of the plug during removal.
  • the invention foresees that the plug should be removable by application of a pushing force instead of pulling it out.
  • a pushing force originated from the socket should act on the plug. In this way it is practically impossible to pull out the socket from the wall when removing the plug, more exactly from the box forming a receptacle of the socket, the plug is subjected to pushing force and thereby the danger of pulling out the conductors of the plug extincts.
  • the essence of the invention is that the step of pulling out the plug should be facilitated by a construction reverting the direction of action of the force and this construction should form a part of the electric socket.
  • the object of the present invention is an electric socket showing improved disconnection characteristics which comprises a receiving part with a depression for receiving a plug, a body for supporting the receiving part, wherein in the receiving part and the body holes are made which are equipped with contacts for securing current way between an electric network and pins of the plug inserted into the depression and to the receiving part means for facilitating removal of the plug from the receiving part are assigned.
  • the facilitating means include a pushing rod supported on and guided in the receiving part or in the body, connected to a pushing plate made as a two- armed lever having an outer and an inner end, further, the pushing plate is supported so that under action of the pushing rod in a first direction the inner end of the pushing plate moves oppositely and parallel to the first direction, advantageously it forms a rocking lever supported between the depression and the body, wherein the outer end is in an operating connection with the pushing rod, and the inner end is arranged substantially in or below the middle region of the depression.
  • the pushing rod is supported on and guided in the receiving part, the pushing plate lies within the depression and its inner end is made with an involute shaped pushing surface.
  • the pushing rod is supported on the body and guided in the receiving part, the inner end of the pushing plate is in operating connection with a pushing element, wherein the pushing element is arranged in the middle part of the depression.
  • the receiving part or a section thereof forms a nest arranged between guiding means wherein the pushing rod is supported on the body and connected with the pushing plate lying under the receiving part.
  • the pushing rod is preferably supported either on the receiving part or on the body independently from the nest and the pushing plate is arranged under the nest.
  • the pushing rod and the pushing plate are made of appropriate high strength plastics.
  • the life time of the electric socket of the invention can be increased if between the pushing rod and the pushing plate is a fork type connection wherein preferably the outer end of the pushing plate is made with two outer parts of changing thickness arranged adjacent to a narrower part of the pushing rod.
  • the pushing rod and the pushing plate are arranged at right angle.
  • the section of the outer end of the pushing plate connecting the pushing rod is made with thickness having a minimal value at the point of connection with the pushing rod.
  • the electric socket of the invention can be applied in households and generally in every case when the socket is installed in place which is difficult to reach.
  • the electric socket proposed by the invention will be described with reference to the electric sockets of design looking generally like those being in common use in Europe and many other parts of the world (Figs 2., 4., 6.).
  • the electric socket is divided into a receiving part 12 determining a depression 23 for the plug (not shown) and a body 3 wherein holes 5 of circular cross-section corresponding to the pins of the plug are present.
  • the body 3 and the receiving part 12 are united to each other via at least one clamping plate arranged in the body and by respective screws supported in the receiving part 12.
  • contacts 15 made of resilient material are arranged which are pressed with predetermined force to the pins of the plug inserted into the electric socket.
  • lateral contacts 22 are prepared for securing third electric current way required in the grounded electric appliances, the lateral contacts being in electric coupling with plate 4 secured by a screw or other known way in the body 3.
  • the general principles of the present invention can be applied to sockets of other designs also, without departing from the essence of the invention expressed in the attached claims.
  • the construction of the proposed electric socket is similar to that of the electric sockets commonly used in Europe in households for contacting low or middle power consumers to the electric network.
  • this socket comprises a receiving part 12 and a body 3 wherein holes 5 with contacts 15 are arranged.
  • the receiving part 12 and the body 3 of the socket is completed with well known fixing means, i.e. a tongue 7 to be pressed by a screw 6 to a box (not illustrated) built-in into a wall of a building and a bended plate type supporting element 8 connected to a base frame member 9 holding the upper part of the socket, the upper part forming a covering plate 10 defining a depression 23 for receiving the plug (not illustrated).
  • This arrangement is common in all embodiments of the electric socket proposed by the invention and does not form any novel feature.
  • the novelty of the electric socket constructed according to the present invention lies in applying a pushing rod 1 which is inserted at an appropriate place of the covering plate 10 into the receiving part 12 and is supported and guided by the last (Figs 1., 3., 5.) or the body 3.
  • the pushing rod 1 is connected with an outer end 16 of a pushing plate 2 supported on the body 3 or on a receiving member 18 belonging to the receiving part 12.
  • the pushing plate 2 constitutes a two-armed lever, i.e. an element which can be rotated on a supporting surface 14 around an appropriate axis of rotation.
  • the pushing plate 2 constitutes a rocking lever supported within the receiving part or on the body 3 and connected at right angle with the pushing rod 1.
  • the pushing plate 2 can be supported also independently on either the body 3 or the receiving part 12.
  • the supporting surface 14 lies preferably under the bottom plane of the depression 23.
  • the pushing plate 2 as mentioned, is connected at its outer end 16 with the pushing rod 1, and its other, inner end 19 lies in or near to the middle region of the depression 23 where it comes into direct or indirect contact with the middle section of the plug.
  • the pushing rod 1 is prepared with an extension 24 having either an inner opening (not shown) limited from the bottom by a bolt 17 or two outer depressions determining a narrower middle line section (not shown, too).
  • the outer end 16 of the pushing plate 2 is inserted into the inner opening of the pushing rod 1, in the second case the outer end 16 of the pushing plate 2 surrounds as a fork the narrower middle line section of the pushing rod 1 in the region of the extension 24.
  • the outer end 16 of the pushing plate 2 can be made with smoothly changing thickness with minimal value in the region where the pushing plate 2 is connected with the pushing rod 1. This change follows from the conditions of power transmission between the pushing plate 2 and the pushing rod 1.
  • the pushing plate 2 fits the receiving member 18 defining the surface of the receiving part 12 contacting the pushing plate 2.
  • the pushing rod 1 and the pushing plate 2 are preferably made of high strength plastics because thereby the safety problems can be avoided.
  • the electric socket of the present invention can be realized in some simple basic embodiments.
  • the pushing rod 1 lies in an inner opening prepared in the outer end 16 of the pushing plate 2 to form a fork type connection and the pushing plate 2 constitutes a rocking ver.
  • the pushing plate 2 is arranged in diagonal direction in the bottom level of the depression 23, its width is selected so that it does not cover the hole 5. Obviously it is possible to prepare it with greater width but in this case within the pushing plate 2 an opening should be made in order to leave the hole 5 attainable for the pin of the plug.
  • the inner end 19 of the rocking lever having an involute shaped pushing surface 13 elevates and moves in direction opposite to the direction of the pushing force.
  • the pushing surface 13 of the rocking lever lies as near as possible to the geometric middle point of the plug. This can be ensured when the inner end 19 of the rocking lever is constituted by the involute shaped pushing surface 13.
  • the rocking lever lies in this embodiment on the supporting surface 14 prepared in the receiving member 18.
  • FIG. 3 The cross-section of another preferred embodiment of the electric socket built-up according to the present invention is illustrated in Fig. 3, wherein the plate 4 is not necessary because the electric socket of this type may not be connected to a grounded conductor of an electric network. Hence, the lateral contacts 22 are not present in the depression 23.
  • the difference to the solution reported with reference to Fig. 1. lies in that the pushing plate 2 rests on the supporting surface 14 prepared in the upper part of the body 3 and its inner end 19 is contacted with a pushing element 11. Between the receiving member 18 and the body 3 a nest space 21 is left wherein the pushing plate 2 can rotate. When pressing the pushing rod 1 downwards, the inner end 19 of the pushing plate 2 makes the pushing element 11 move upwards and this facilitates the removal of the plug from the holes 5 and the depression 23.
  • a section or the entity of the receiving part 12 constitutes a nest which is arranged between guiding members 20.
  • the nest as a whole entity can be translated by the action of the pushing plate 2.
  • the pushing plate 2 covers in this case also, similarly to the solution of Fig. 3 the upper surface of the body 3 as a supporting surface 14 and forms a rocking lever. When pressing the pushing rod 1 downwards this movement is translated to the receiving part 12 which, together with the plug, is taken apart from the body 3. Thereafter the plug can easily be removed.
  • the pushing rod 1 and pushing plate 2 should ensure the translation of the plug on a way which is sufficient for removing the plug from between the contacts 15 in the holes 5.
  • the electric socket of the present invention can be used in all appliances which serve to realizing temporary electric connections with the help of plugs, i.e. not only in households but in the industry and services.
  • the socket proposed by the invention improves the security of electric networks cooperating with different consumers.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Spark Plugs (AREA)
  • Connecting Device With Holders (AREA)
  • Gloves (AREA)
  • Organic Insulating Materials (AREA)
EP92909315A 1991-05-03 1992-04-30 Electric socket with improved disconnection characteristics Expired - Lifetime EP0582616B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
HU911486A HU208882B (en) 1991-05-03 1991-05-03 Receptactle with ejector work for connecting electric consumer
HU148691 1991-05-03
PCT/HU1992/000018 WO1992020123A1 (en) 1991-05-03 1992-04-30 Electric socket with improved disconnection characteristics

Publications (2)

Publication Number Publication Date
EP0582616A1 EP0582616A1 (en) 1994-02-16
EP0582616B1 true EP0582616B1 (en) 1996-04-10

Family

ID=10954684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92909315A Expired - Lifetime EP0582616B1 (en) 1991-05-03 1992-04-30 Electric socket with improved disconnection characteristics

Country Status (16)

Country Link
EP (1) EP0582616B1 (ru)
AT (1) ATE136694T1 (ru)
BG (1) BG61051B1 (ru)
CZ (1) CZ281569B6 (ru)
DE (1) DE69209834T2 (ru)
DK (1) DK0582616T3 (ru)
FI (1) FI108483B (ru)
HU (1) HU208882B (ru)
MD (1) MD976G2 (ru)
NO (1) NO307854B1 (ru)
PL (1) PL168655B1 (ru)
RO (1) RO111882B1 (ru)
RU (1) RU2088005C1 (ru)
SK (1) SK278181B6 (ru)
UA (1) UA26450C2 (ru)
WO (1) WO1992020123A1 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1274153B1 (fr) * 2001-07-04 2007-10-10 Legrand France Socle de prise de courant - moyens de d-connexion de fiche

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004372A3 (fr) * 1990-08-16 1992-11-10 Staar Sa Dispositif d'extraction d'une fiche de courant electrique.
US5480313A (en) * 1992-09-02 1996-01-02 Staar S.A. Automatic disconnect mechanism for electrical terminal fittings
HU225604B1 (en) * 2001-04-24 2007-05-02 Legrand Magyarorszag Villamoss Receptacle with picking up apparatus
WO2006043847A1 (en) * 2004-10-21 2006-04-27 Silviu Ristea Type a and b electric outlet with plug extractor
GB2441357A (en) * 2006-08-29 2008-03-05 Calvin Ka Wing Leung Electrical connector with ejector
RU2343608C1 (ru) 2007-08-17 2009-01-10 Юрий Игоревич Донецкий Штепсельное соединение
DE102008064492A1 (de) * 2008-12-23 2010-06-24 Schneider Electric Industries Sas Steckdose mit Lösemechanismus
RU2397585C1 (ru) * 2009-03-05 2010-08-20 Юрий Игоревич Донецкий Сохраняющее штепсельное соединение
CN102610962B (zh) * 2012-03-23 2014-02-26 宁波市科迈隆电器有限公司 插座
FR3100934A1 (fr) * 2019-09-12 2021-03-19 Dominique Beck Une prise électrique
FR3137800A1 (fr) * 2022-07-07 2024-01-12 H.B.F. Prise électrique equipée d’un système d’extraction de prise

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042292A (en) * 1975-08-11 1977-08-16 Chensky Frank T Wall plate structure
US4114969A (en) * 1977-09-29 1978-09-19 Borg John P Plug release mechanism
US4640565A (en) * 1985-05-29 1987-02-03 E. I. Du Pont De Nemours And Company Ejecting latch for electrical connectors
JPH0541509Y2 (ru) * 1988-03-03 1993-10-20

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
October 1989 (15.10.89). *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1274153B1 (fr) * 2001-07-04 2007-10-10 Legrand France Socle de prise de courant - moyens de d-connexion de fiche

Also Published As

Publication number Publication date
HUT61135A (en) 1992-11-30
SK278181B6 (en) 1996-03-06
SK121993A3 (en) 1994-05-11
FI934846A0 (fi) 1993-11-02
NO933957L (no) 1993-11-02
HU208882B (en) 1994-01-28
HU911486D0 (en) 1991-11-28
DK0582616T3 (da) 1996-08-05
RU2088005C1 (ru) 1997-08-20
NO307854B1 (no) 2000-06-05
PL168655B1 (pl) 1996-03-29
DE69209834T2 (de) 1996-10-24
FI108483B (fi) 2002-01-31
ATE136694T1 (de) 1996-04-15
UA26450C2 (uk) 1999-08-30
BG98192A (bg) 1994-07-29
DE69209834D1 (de) 1996-05-15
CZ228193A3 (en) 1994-03-16
MD976G2 (ru) 1999-01-31
WO1992020123A1 (en) 1992-11-12
BG61051B1 (bg) 1996-09-30
FI934846A (fi) 1993-11-02
RO111882B1 (ro) 1997-02-28
EP0582616A1 (en) 1994-02-16
NO933957D0 (no) 1993-11-02
CZ281569B6 (cs) 1996-11-13

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