EP0952627B1 - Connecteur électrique - Google Patents

Connecteur électrique Download PDF

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Publication number
EP0952627B1
EP0952627B1 EP99303058A EP99303058A EP0952627B1 EP 0952627 B1 EP0952627 B1 EP 0952627B1 EP 99303058 A EP99303058 A EP 99303058A EP 99303058 A EP99303058 A EP 99303058A EP 0952627 B1 EP0952627 B1 EP 0952627B1
Authority
EP
European Patent Office
Prior art keywords
switch
connector
conductor
contact
contact means
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
EP99303058A
Other languages
German (de)
English (en)
Other versions
EP0952627A1 (fr
Inventor
Kenneth Gee
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.)
Sicame Electrical Developments Ltd
Original Assignee
Sicame Electrical Developments 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
Priority claimed from GBGB9808544.2A external-priority patent/GB9808544D0/en
Priority claimed from GBGB9822739.0A external-priority patent/GB9822739D0/en
Application filed by Sicame Electrical Developments Ltd filed Critical Sicame Electrical Developments Ltd
Publication of EP0952627A1 publication Critical patent/EP0952627A1/fr
Application granted granted Critical
Publication of EP0952627B1 publication Critical patent/EP0952627B1/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
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/08—Short-circuiting members for bridging contacts in a counterpart
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2408—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by clamping screws
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged

Definitions

  • the invention which is the subject of this application relates to a connector for the connection together of at least two electrical conductors which are used to supply electricity to premises and the like.
  • the connector is for use in connecting together conductors when live, without adversely affecting the safety of the person using the connector.
  • the connector is of specific advantage in that it allows the connection together of live conductors which are carrying an electrical load and which, are regarded as being particularly dangerous to connect when live.
  • An electricity supply to a premises comprises a conductor cable which is connected to and branches from a larger conductor cable which in turn may be taken from a larger conductor cable to a transformer and so on back to the source.
  • a connector can be used to connect the connector, even when live, relatively safely as long as the connector is insulated and the person using the same is prevented from having access to the conducting components which actually make the connection. This is due to the fact that, as the connection is being made for a conductor to premises where there is no load on same as the premises are new and are therefore not active, the connection of these conductors using an insulated connector is acceptable.
  • This load which can be for example, up to 600 amps, renders the live connection of the conductor cables particularly dangerous and, in particular, causes arcing and sputtering to take place when the conventional connectors are brought into position to connect the same. This is undesirable and dangerous to the person handling the connection of the conductors.
  • Document GB697065 does disclose a connector with a switch which can be used to connect first and second conductors together in line with the switch being moved between electrical connection and disconnection positions.
  • this connector is for use in conjunction with an appliance such as a light unit which does not have its own switch control means such that the light unit can only be in an on condition when the switch of the connector is in an electrical connection position.
  • an appliance such as a light unit which does not have its own switch control means
  • the light unit can only be in an on condition when the switch of the connector is in an electrical connection position.
  • the connector is for domestic purposes the voltage levels are significantly lower than the conductors used in the supply network to which this invention relates..
  • the aim of the invention is to provide a connector which can be used to connect live conductors to each other and especially, but not exclusively, conductors which may be carrying a load at that time so that the connection can take place safely and without undue danger to the persons using the connectors. It is also a further aim of the invention to provide a connector in a form whereby the same can be conveniently used in the connection of conductors which may be live or indeed conductors which may not be live, so that the said conductor can be used for a number of purposes or situations safely.
  • a connector for the electrical connection of at least a first, live, conductor to a second conductor, said connector including a body of insulating material housing a first contact means to electrically contact the first conductor and a spaced, second contact means to electrically contact the second conductor and a switch which is movable between an open position in which no electrical contact is made between the conductors and a closed position, in which electrical contact is made between the said first and second contact means so as to form the electrical connection between the said conductors and characterised in that the connector includes an insert, said insert provided in a position to maintain the switch in an open unconnected position, said insert is removable to allow the switch to move automatically to a closed contact position.
  • the said first and second contact means are inserts of electrically conductive material which are inserted and positioned within a connector body of insulating material so that the connector can be used to connect live conductors with the person using the connector only having to handle the insulating material body of the connector.
  • first and second contact means are unitary members and each of the conductors is clamped down onto the said contact means or alternatively the contact means is clamped onto the conductor.
  • each contact means includes means for piercing the insulating material on said conductors so as to create electrical connection with the core of the conductor, which carries the electric supply
  • each contact means comprises two parts, one arranged to be clamped onto the conductor from one side of the same and the other part being clamped onto the conductor from the other side of the same.
  • the conductor is preferably contacted with the contact face by the operation of at least one bolt, preferably a shear bolt, to bring the conductor into contact with the contact face.
  • a shear bolt the torque at which shear will occur is set so as to ensure that the contact means has pierced the insulating material and contacted with the core of the conductor to make the electrical contact.
  • the switch is provided so that movement of the switch between said open position and an position adjacent the closed position is relatively gradual but movement between the intermediate position and the closed position is relatively fast so as to prevent or minimise arcing from occurring if the connector is used to contact conductors which are carrying a load.
  • One mechanism which may be used for the switch is an over centre mechanism whereby the switch is moved gradually towards the closed position until an intermediate position is reached whereupon the switch is moved the remaining distance by a snap action.
  • the switch is moved to the position prior to the snap action by the turning of a screw which is connected with the body of the connector and which, in one embodiment, is a shear screw.
  • the snap action is created by the provision of a resilient member which, when the switch reaches the intermediate position, moves to expand and causes the snap action of the switch to make the connection.
  • the switch is biased towards the closed position but is retained in an open position by the provision of the insert such as a tab which can be selectively removed by the person using the connector to allow the switch to move to the closed position.
  • the insert is typically formed of insulating material to allow safe handling by the person.
  • the insert is removed once the conductor cores are clamped into the connector in connection with the contact means so that the removal of the insert causes the switch to move to the closed position and make the electrical contact between the conductors.
  • a method of forming an electronic connection between at least a first, live, conductor to a second conductor, said second conductor connected to a further conductor and/or independently controllable electrical components or facilities downstream of the connection by which a load can be generated if in a switched on condition when electrical connection is made between the conductors by the connector, said conductor body formed of insulating material and including at least one electrical contact means for each of the conductors comprising the steps of:
  • the switch connector is mechanically moved to an intermediate position for which the switch connector automatically moves to the closed position.
  • Figures 1A and 1B illustrate what, in the embodiment shown, is a lower body part of the connector in plan and end elevation respectively.
  • the part 2 is formed from insulating material 4 and, inserted into the insulating material is a first contact means 6 formed of an electrically conducting material and a second contact means 8 also formed of electrically conductive material.
  • the first and second contact means 6, 8 are unitary members and are positioned to run along a significant length of the reception area 10 and 12 respectively for the conductors.
  • Each of the first and second contact means 6, 8 are provided with insulating piercing formations 14 which, when the conductor cables are clamped onto the contact means, serve to pierce the insulating materials and contact the cores of the cables.
  • a switch 16 which is mounted in relation to the body part 4 and is shown in more detail in the following figures but, in general, is movable between an open position as shown in Figure 1A and a closed position in which electrical contact is made with the first and second contact means 6, 8 to form the electrical connection between the conductors placed therein.
  • first and second bolt holes 18, 20 for the reception of shear bolts therein and a further hole 22 for the reception of a bolt to cause the switch 16 to move between open and closed positions.
  • FIGS 2A and 2B there is shown the second part of the connector 24 which includes first and second location means 26, 28 in which the conductor cores are located when placed in position in the connector. There are also provided apertures 30, 32 for the reception of the locking bolts which pass through the same and into engagement in the holes 18 and 20 of the first connector body part 4 which are threaded.
  • FIGs 3A-3C there is illustrated in schematic fashion the first and second body parts 4 and 24 in use in electrically connecting two conductor cables 34, 36.
  • Figure 3A it is illustrated how the conductor cables 34, 36 are located in location means 26, 28 of the body part 24 and the piercing formations 14 of the first and second electrical contact means 6 and 8.
  • the switch 16 is also illustrated in an open position in which it remains as the first and second body parts 4,24 are forced together by means of locking bolts, not shown and as indicated by arrows 38.
  • Figure 4 illustrates in more detail, a reverse angle view of the switch as shown in Figures 3A-3C. and illustrates the components which allow the switch to be moved between open and closed positions.
  • the screw 50 which is used to move the switch by turning of the screw in relation to the connector body includes a resilient spring 52.
  • the switch 16 is provided at one with a pivotal point connection 54 with the contact means 6 so that electrical connection between the switch and contact means 6 is possible and, within the body of the switch there is provided a member 56 which is acted upon by a spring 58, said spring attempting to force the member outwardly from the switch face 60 as indicated to contact with the face 62 of the contact means 8.
  • the spring 52 in the screw 50 is weaker than the spring 58 in the switch 16 when in the position shown in full lines.
  • movement of the screw 50 onto the switch causes a gradual movement of the switch towards a closed position until an intermediate position of the same, which is indicated in broken lines 64, is reached.
  • the strength of the spring 52 becomes greater than the compressed spring 58 in the switch so that the spring 52 causes the pointed portion 66 to move outwardly and exert a snap movement on the switch 16 from the intermediate position 64 to the fully closed position in contact with the contact means 8 and hence create the electrical contact between the contact means 6 and 8. It is this snap action which prevents arcing from occurring as the movement is sufficiently quick.
  • the contact pressure of the switch when initially closed by the snap action is provided by the resilient member, further rotation of the screw 50 can be used to securely clamp together the switch contact faces to increase the current carrying capacity of the same and ensure that the contact is maintained.
  • FIG. 5A and B there is shown an alternative embodiment of connector wherein there is provided an insert 100 in the form of a tab, which retains the switch 102 of the connector body 104 in an open position.
  • the switch is biased to the closed position to make electrical connection between the contact means by a force applied to the switch to move it to the closed position.
  • the switch moves automatically to the closed position to form the electrical connection between the contact means 106,108 in contact with in-line conductor cores 110,112 respectively.
  • the present invention provides a connector which can be safely used to connect electrical conductors when the same are not live, when the same are live and, furthermore when the same are live and carrying a load.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Multi-Conductor Connections (AREA)

Claims (15)

  1. Connecteur pour la connexion électrique d'au moins un premier conducteur (34) sous tension à un deuxième conducteur (36), ledit connecteur comportant un corps (4 ; 24) en matière isolante (4) abritant un premier moyen de contact (6) afin de mettre électriquement en contact le premier conducteur et un deuxième moyen de contact (8) espacé d'une certaine distance afin de mettre électriquement en contact le deuxième conducteur et un interrupteur (16) lequel est apte à être déplacé entre une position ouverte dans laquelle aucun contact électrique n'est établi entre les conducteurs, et une position fermée, dans laquelle le contact électrique est établi entre lesdits premier et deuxième moyens de contact (6 ; 8) de sorte à procurer la connexion électrique entre lesdits conducteurs et caractérisé en ce que le connecteur inclut un insert (100), ledit insert étant monté dans une position lui permettant de maintenir l'interrupteur dans une position ouverte non connectée, ledit insert étant amovible afin de permettre à l'interrupteur de se déplacer automatiquement vers une position de contact fermée.
  2. Connecteur selon la revendication 1, caractérisé en ce que les premier et deuxième moyens de contact sont des inserts en matériau électriquement conducteur, lesquels sont introduits et positionnés dans le corps de connecteur en matière isolante de sorte que le connecteur puisse être utilisé pour connecter des conducteurs sous tension, alors que la personne utilisant le connecteur manipule le corps en matière isolante.
  3. Connecteur selon la revendication 1, caractérisé en ce que les premier et deuxième moyens de contact sont des éléments unitaires et chaque moyen de contact est serré sur un conducteur.
  4. Connecteur selon la revendication 3, caractérisé en ce que les moyens de contact comprennent un moyen permettant de percer la matière isolante sur les conducteurs, afin de créer une connexion électrique avec l'âme du conducteur.
  5. Connecteur selon la revendication 1, caractérisé en ce que chaque moyen de contact comporte au moins deux parties, lesdites parties étant agencées de manière à se mettre électriquement en contact avec le conducteur.
  6. Connecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le conducteur est mis en contact avec les moyens de contact suite à l'actionnement d'au moins un moyen d'engagement destiné à amener en contact électrique le conducteur et les moyens de contact.
  7. Connecteur selon la revendication 1, caractérisé en ce que la connexion d'interrupteur est poussée vers la position fermée.
  8. Connecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le connecteur d'interrupteur entre les premier et deuxième moyens de contact est un mécanisme à détente brusque.
  9. Connecteur selon la revendication 8, l'interrupteur pouvant être déplacé, progressivement à partir de la position ouverte vers une position intermédiaire après quoi l'interrupteur se déplace sur la distance restante jusqu'à la position Contact Fermé grâce à une action d'enclenchement rapide.
  10. Connecteur selon la revendication 9, caractérisé en ce que l'interrupteur est déplacé vers la position intermédiaire avant l'action d'enclenchement rapide grâce à la rotation d'une vis qui est raccordée au corps du connecteur.
  11. Connecteur selon la revendication 9, caractérisé en ce que l'action d'enclenchement rapide est obtenue grâce à la présence d'un élément élastique lequel est maintenu dans un état tendu et qui - lorsque l'interrupteur atteint la position intermédiaire - se déplace vers une position détendue et déplace l'interrupteur à l'aide d'une action d'enclenchement rapide afin d'établir la connexion entre les premier et deuxième moyens de contact.
  12. Connecteur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'à la suite du mouvement de la connexion d'interrupteur vers la position fermée, de connexion, celle-ci est maintenue dans cette position.
  13. Procédé permettant de former une connexion électronique entre au moins un premier conducteur (34) sous tension et un deuxième conducteur (36), ledit deuxième conducteur étant connecté à un conducteur supplémentaire et/ou à des organes ou des composants électriques pilotables de façon indépendante en aval de la connexion en vertu de laquelle une charge peut être générée si elle se trouve dans un état activé lorsque la connexion électrique est établie entre les conducteurs par le connecteur, ledit corps de conducteur (2, 24) étant réalisé en matière isolante (4) et comportant au moins un moyen de contact électrique (6, 8) pour chacun des conducteurs, le procédé comprenant les étapes consistant à :
    agripper chacun des conducteurs sous tension par la matière isolante qui entoure les âmes de ceux-ci ;
    placer chacun des conducteurs en position dans le corps de connecteur ;
    déplacer les moyens de contact (6, 8) sur les conducteurs respectifs (34, 36) afin d'établir un contact électrique avec ceux-ci, et caractérisé en ce que les moyens de contact sont séparés électriquement par un interrupteur (16) se trouvant en position ouverte et, lorsque les moyens de contact (6, 8) sont en connexion avec les conducteurs respectifs, l'interrupteur est déplacé vers la position fermée afin de connecter électriquement le moyen de contact, et par conséquent les conducteurs, suite à l'enlèvement d'un insert qui est initialement prévu pour maintenir l'interrupteur dans un état ouvert, alors que l'enlèvement de l'insert oblige l'interrupteur à se déplacer automatiquement jusqu'à une position de contact fermée.
  14. Procédé, selon la revendication 13, caractérisé en ce que le connecteur d'interrupteur est poussé vers la position fermée.
  15. Procédé, selon la revendication 13, caractérisé en ce que le connecteur d'interrupteur est déplacé de façon mécanique vers une position intermédiaire à partir de laquelle le connecteur d'interrupteur se déplace automatiquement pour se mettre dans la position fermée.
EP99303058A 1998-04-23 1999-04-20 Connecteur électrique Expired - Lifetime EP0952627B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9808544.2A GB9808544D0 (en) 1998-04-23 1998-04-23 Connector
GB9808544 1998-04-23
GB9822739 1998-10-20
GBGB9822739.0A GB9822739D0 (en) 1998-10-20 1998-10-20 Connector

Publications (2)

Publication Number Publication Date
EP0952627A1 EP0952627A1 (fr) 1999-10-27
EP0952627B1 true EP0952627B1 (fr) 2007-10-03

Family

ID=26313508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99303058A Expired - Lifetime EP0952627B1 (fr) 1998-04-23 1999-04-20 Connecteur électrique

Country Status (3)

Country Link
EP (1) EP0952627B1 (fr)
AT (1) ATE375018T1 (fr)
DE (1) DE69937212T2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0607682D0 (en) * 2006-04-19 2006-05-31 Sicame Electrical Dev Ltd Electrical conductor connector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697065A (en) * 1950-12-26 1953-09-16 Charles Edwin Gilbert Improvements in line cord switch
US3792212A (en) * 1971-08-17 1974-02-12 Eagle Electric Mfg Co Inc Snap action electric switch
EP0015356B1 (fr) * 1978-10-13 1983-08-03 F.LLI ZUCCHINI S.p.A. Dispositif de dérivation bipolaire pour conducteurs électriques multipolaires du type blindé
GB9308515D0 (en) * 1993-04-15 1993-06-09 Sicame Electrical Dev Ltd Improvements relating to underground cable connectors

Also Published As

Publication number Publication date
DE69937212D1 (de) 2007-11-15
ATE375018T1 (de) 2007-10-15
EP0952627A1 (fr) 1999-10-27
DE69937212T2 (de) 2008-07-03

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