EP3190664A1 - Anschlussklemme für elektrogerät, die mit einem klemmkäfig aus nicht-magnetischem material ausgestattet ist - Google Patents

Anschlussklemme für elektrogerät, die mit einem klemmkäfig aus nicht-magnetischem material ausgestattet ist Download PDF

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Publication number
EP3190664A1
EP3190664A1 EP17150057.2A EP17150057A EP3190664A1 EP 3190664 A1 EP3190664 A1 EP 3190664A1 EP 17150057 A EP17150057 A EP 17150057A EP 3190664 A1 EP3190664 A1 EP 3190664A1
Authority
EP
European Patent Office
Prior art keywords
clamping element
clamping
electrical
electrical conductor
configuration
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
EP17150057.2A
Other languages
English (en)
French (fr)
Other versions
EP3190664B1 (de
Inventor
Philippe Fontaine
François Fayard
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.)
TE Connectivity Services GmbH
Original Assignee
ABB Schweiz AG
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 ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP3190664A1 publication Critical patent/EP3190664A1/de
Application granted granted Critical
Publication of EP3190664B1 publication Critical patent/EP3190664B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/28Clamped connections, spring connections
    • H01R4/30Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36Conductive members located under tip of screw
    • H01R4/363Conductive members located under tip of screw with intermediate part between tip and conductive member
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/28Clamped connections, spring connections
    • H01R4/30Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36Conductive members located under tip of screw
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/58Electrically-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 characterised by the form or material of the contacting members
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22Bases, e.g. strip, block, panel
    • H01R9/24Terminal blocks
    • H01R9/26Clip-on terminal blocks for side-by-side rail- or strip-mounting

Definitions

  • the present invention relates to a connection terminal for electrical apparatus such as a terminal block or a contactor. It also relates to an electrical appliance as such.
  • connection terminal intended to be mounted in an electrically insulating housing conventionally comprises a clamping element movably mounted in the insulating housing and an actuating mechanism for moving the clamping element.
  • the clamping member is ready to receive a free end of an electrical conductor inserted into a cavity delimited by the clamping member which often adopts a cage shape. Thanks to the actuating mechanism, the clamping element can vary between a position allowing the introduction of the electrical conductor and a position in which the clamping element plates and holds the end of the electrical conductor against an electrically mounted conductive bar. in the insulating case.
  • the clamping element is made by an assembly of several parts, generally steel between them.
  • the assembly of the clamping element therefore requires several operations, which is not optimal in the context of cost reduction and simplification of assembly. There is also a risk that some of the pieces will be lost or damaged.
  • the use of steel is problematic.
  • the electrical intensity flowing in the electrical conductor and in the conductive strip may be greater than 100 A. This may result eddy currents of high intensity, likely to create a heating of the steel parts and a deformation of the clamping element may lead to a detrimental loosening of the conductive element.
  • the present invention aims to solve all or part of the disadvantages listed above.
  • connection terminal for electrical apparatus such as a terminal block or a contactor
  • a connection terminal for electrical apparatus such as a terminal block or a contactor
  • a clamping element formed in a non-magnetic material and being in the form of a cage adapted to receive the end of an electrical conductor inserted in the clamping member, and actuating members for varying the clamping member between a loosening configuration in which the end of the electrical conductor can freely be inserted into the element clamping or withdrawing out of the clamping member and a clamping configuration in which the end of the electrical conductor previously inserted into the clamping member is held in place by clamping between the clamping member and a conductive bar of the electrical apparatus for making electrical contact between the conductive bar and the end of the electrical conductor, in lacquer lle the clamping element is constituted by a single piece piece.
  • connection terminal 10 for electrical apparatus.
  • the connection terminal 10 has the function of establishing and maintaining physical and electrical contact between an electrical conductor 13 inserted on the one hand in the connection terminal 10 and on the other hand a conductive strip 11 of the electrical apparatus formed in an electrically conductive material.
  • the electrical apparatus may in particular be of the electric switch type with an operating element for establishing or interrupting electrical continuity, or of the terminal block type.
  • the electrical apparatus may be configured to removably attach to a mounting rail on which a plurality of electrical appliances may be mounted side by side, the electrical appliances being identical or not to each other.
  • connection terminal 10 comprises a clamping element 12 formed in a non-magnetic material, which makes it possible to avoid or limit the formation of eddy currents evoked in relation with the state of the art presented previously, even in the particular case. targeted applications of high power that involve the presence of an electrical current flowing in the electrical conductor 13 and in the conductive strip 11 greater than 100A.
  • the clamping element 12 is in the form of a cage adapted to receive the end of an electrical conductor 13 inserted in the clamping element 12.
  • the term "cage” is to be interpreted with a very broad meaning, in that it is an element defining a cavity open or not, through or not, adapted to receive ends of electrical conductors that can have different shapes, different dimensions, in particular different diameters or different lengths.
  • the clamping element 12 is constituted by a single piece. This eliminates assembly and manufacturing issues, which in turn reduces costs and improves reliability while improving magnetic properties, to avoid eddy currents as much as possible in high power applications (including electric current flowing in the electrical conductor 13 concerned and in the electrical strip 11 having an intensity greater than 100A) particularly targeted as a field of application to the invention.
  • the arrangement of a clamping element of non-magnetic material and in the form of a single piece and monobloc provides in practice better magnetic properties than a multi-piece assembly by avoiding magnetic discontinuities or even voluntary contact breaks or not .
  • the non-magnetic material is configured so that the clamping element 12 has a state of spatial deformation, under the effect of the heat resulting from the magnetic field induced by an electrical intensity greater than 100A flowing in the electrical conductor 13. , such that a withdrawal of the end of the electrical conductor 13 from the clamping element 12 in the clamping configuration is inhibited by the clamping member 12.
  • the one-piece clamping element has a deformation rate (under the effect of the heating that results from this intensity) ensuring the maintenance of the electrical conductor below a given limit value of axial withdrawal force.
  • the non-magnetic material of the clamping element is adapted so as to fulfill the function of presenting a state of spatial deformation ensuring the inhibition by the clamping element of the withdrawal of the electrical conductor out of the element. when such conditions where an electrical current greater than 100A flows in the electrical conductor are applied.
  • this adaptation of the nonmagnetic material may depend on the shape of the clamping element, its thickness, or the maximum value of the withdrawal force that the clamping element must inhibit.
  • the adaptation of the non-magnetic material according to these characteristics can be performed by numerical simulation and the skilled person is quite able to search for the non-magnetic material according to the dimensional or functional characteristics that are attributed to the clamping element.
  • the organization of the clamping element in the form of a single monoblock piece not only makes it more economical, more reliable, simpler and less risky in terms of loss or deterioration, but also makes it possible to have a capacity to deform significantly less to improve the axial strength of the electrical conductor.
  • the non-magnetic material is a copper-based alloy, aluminum or an aluminum-based alloy, which in practice gives very good results.
  • clamping element 12 as shown here can be manufactured by any method and process suitable for the purpose and the desired result, the single piece in which the clamping element 12 is formed can advantageously be obtained by a simple extrusion operation, which makes the manufacturing and obtaining very simple, and inexpensive.
  • the clamping element 12 is in the form of a profile portion having a closed contour section.
  • the section of each clamping member 12 may be in the form of a ring or a ring, exactly circular or not, for example in a slightly oblong shape, elongate in a direction corresponding substantially to the direction in which the clamping element 12 is intended to clamp the electrical conductor 13 and the conductive strip 11.
  • Such a closed form of the section allows the clamping member 12 to have very good magnetic characteristics, significantly greater than an open-form section or a multi-piece clamping member. between them, allowing it in particular to present very small eddy currents even when the electrical intensity is greater than 100A in the electrical conductor 13 clamped by this clamping element 12 and in the conductive strip 11.
  • the cutting section refers to the section considered perpendicular to the direction in which the clamping member 12 has been extruded.
  • the thickness of the clamping element 12 is, at least locally, between 2 and 4 mm.
  • This dimensional characteristic in addition to the use of a non-magnetic material and optionally of the characteristic linked to the closed shape of the section of the clamping element 12, makes it possible to limit even more the effects of heating and deformation of the clamping member 12 even when an electrical current greater than 100A is circulating in the electrical conductor 13.
  • the electrical apparatus comprises an insulating housing 14 electrically formed in any suitable material such as for example a plastic material for ease of manufacture by injection. At least one connection terminal 10 is mounted in the electrical apparatus, depending on the number of electrical conductors 13 to be connected. In the example illustrated, the electrical apparatus comprises two separate connection terminals 10, independent of one another. The two connection terminals 10 allow the electrical connection to the conductive strip 11 of two electrical conductors 13 identical or different. Each of the two connection terminals 10 is intended to receive, in this case, the end of a corresponding electrical conductor 13 (see FIG. figure 1 ).
  • the insulating housing 14 may be one-piece, or, as illustrated, constituted by the assembly of several parts: in the example shown, the insulating housing 14 comprises two parts 14a, 14b assembled to each other so that dismountable in a direction of assembly generally perpendicular to the direction of insertion of the electrical conductors 13 in the two connection terminals 10.
  • the attachment of the two parts 14a, 14b can be done by snapping, by means of screws, or everywhere else equivalent way.
  • the insulating housing 14 comprises at least one receiving orifice 15 of a first type in which the end of an electrical conductor 13 is threaded until it is inserted into the clamping element 12 and at least one orifice of receiving 16 of a second type allowing the insertion of another electrical conductor (not shown) into the insulating housing 14, different from the electrical conductor (s) 13.
  • the electrical apparatus comprises at least one branch bar 17 configured to electrically connect the conductive strip 11 and the electrical conductor inserted into the receiving port 16 of the second type.
  • the insulating housing 14 comprises two receiving ports 15 of the first type arranged on opposite sides of the insulating housing 14 opposite. These two receiving orifices 15 according to the first type make it possible to receive the two electrical conductors 13 which come to connect in the two connection terminals 10 which comprises the electrical apparatus, housed in the insulating housing 14.
  • Each receiving orifice 15 of the first type may comprise a protective cover (not shown) intended to close the receiving orifice 15 of the first type that it equips before insertion by insertion of the electrical conductor 13.
  • the insulating housing 14 also comprises two receiving orifices 16 according to the second type, also arranged on the same two opposite lateral sides of the insulating housing 14, each being located just above a receiving orifice 15 of the first type, as well as two shunt strips 17 distinct from each other and distinct from the bar 11.
  • the two receiving orifices 16 according to the second type can receive two unrepresented electrical conductors, different from the electrical conductors identified 13, which come into contact with the branch strips 17 to establish an electrical connection with the conductive strip 11.
  • connection terminals 10 and the conductive strip 11 as well as the branch strips 17 are concretely mounted in one of the two parts 14a, 14b of the insulating housing 14 before the two parts 14a, 14b of the insulating housing 14 are assembled together.
  • the figure 2 shows the situation after the assembly of the two parts 14a, 14b of the insulating housing 14 between them, before the introduction of the electrical conductors 13 visible on the figure 1 .
  • the figure 1 on which the portion 14b of the insulating housing 14 is absent, shows the particular situation where the clamping element 12 of the connection terminal 10 on the left adopts its clamping configuration while the clamping element 12 of the connection terminal 10 right is in its loosening configuration.
  • the two electrical conductors 13 intended to be connected to the conductive strip 11 via the two connection terminals 10 are different from each other: the diameter of the end of the right electrical conductor 13 which cooperates with the clamping element 12 of the connection terminal 10 on the right in its loosening configuration is very much greater than the diameter of the end of the electrical conductor 13 of the left which cooperates with the clamping element 12 of the connection terminal 10 of the left in its tightening configuration.
  • connection terminal 10 is configured so that in the clamping configuration of the clamping element 12, the end of the electrical conductor 13 previously inserted into the clamping element 12 in its loosening configuration is held in place by clamping. between the clamping element 12 and the conductive strip 11 mounted in the insulating housing 14 in order to establish an electrical contact between the conductive strip 11 and the end of the electrical conductor 13.
  • the dimensions of the inner part of the clamping element 12 intended to receive the end of the electrical conductors 13 and the conductive strip 11, as well as the organization of the actuating elements 18, are configured to admit cooperation with ends of electrical conductors 13 having a diameter within a predetermined value range.
  • clamping element 12 of each of the two connection terminals 10 in one or other of its configurations is practiced by a corresponding and adapted manipulation of the actuating elements 18 concerned.
  • the change from one configuration to the other of the clamping element 12 is practiced by an overall displacement of the clamping element 12 with respect to the insulating housing 14 in which the clamping element 12 is slidably mounted between a first position corresponding to the loosening configuration and a second position different from the first position and corresponding to the clamping configuration.
  • Each clamping element 12 is housed and mounted with a sliding possibility. in a corresponding housing 19 delimited by the insulating housing 14.
  • the sliding movement may be rectilinear or not, depending on the shape and organization of the housing 19, which provides the guiding function of the clamping element 12 during its movement.
  • the insulating housing 14 thus delimits two housings 19 in which are slidably mounted the two clamping elements 12 of the two connection terminals 10.
  • the receiving orifice 15 of the first type opens into the corresponding housing 19.
  • the clamping element 12 of the left connection terminal 10 is in its second position while the clamping element 12 of the right connection terminal 10 is in its first position.
  • the positions are reversed for the two clamping elements 12 with respect to the positions adopted on the figure 1 .
  • each clamping element could be done by any other means, such as for example by a possible change in the shape of the clamping element 12.
  • the actuating elements 18 comprise at least one screw element such as a screw or a bolt, operable from the outside of the insulating housing 14 and ensuring the variation of the clamping element 12 between the first position and the second position and vice versa when this screw element is screwed or unscrewed.
  • the actuating elements 18 may, however, be constituted by any other equivalent and adapted means, in particular as a function of the manner in which the change of the clamping element 12 takes place from one configuration to another.
  • the clamping element 12 may comprise a complementary screwing element adapted to cooperate with the screwing element of the actuating elements 18.
  • the complementary screwing element may be a threaded orifice secured to the clamping element 12, in which is engaged the screw.
  • the passage from one configuration to another of the clamping element 12 can be achieved by an elastic member such as a spring configured for this purpose and housed in the insulating housing 14 .
  • the invention also relates to an electrical apparatus as such, configured to constitute in particular a terminal block or a contactor as it has already been indicated.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connection Or Junction Boxes (AREA)
EP17150057.2A 2016-01-08 2017-01-02 Elektrogerät mit anschlussklemme, die mit einem klemmkäfig aus nicht-magnetischem material ausgestattet ist Active EP3190664B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1650145A FR3046702B1 (fr) 2016-01-08 2016-01-08 Borne de connexion pour appareil electrique equipee d'une cage de serrage en materiau amagnetique

Publications (2)

Publication Number Publication Date
EP3190664A1 true EP3190664A1 (de) 2017-07-12
EP3190664B1 EP3190664B1 (de) 2020-09-02

Family

ID=56117817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17150057.2A Active EP3190664B1 (de) 2016-01-08 2017-01-02 Elektrogerät mit anschlussklemme, die mit einem klemmkäfig aus nicht-magnetischem material ausgestattet ist

Country Status (3)

Country Link
EP (1) EP3190664B1 (de)
CN (1) CN107039786B (de)
FR (1) FR3046702B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114243398A (zh) * 2021-12-09 2022-03-25 中国华能集团清洁能源技术研究院有限公司 线路连接装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938191A (en) * 1958-02-24 1960-05-24 Murray Mfg Corp Electrical pressure connector
EP0687032A1 (de) 1994-06-06 1995-12-13 Schneider Electric Sa Schraubauschlussklemme für eine elektrische Vorrichtung
EP0848452A1 (de) * 1996-12-16 1998-06-17 Entrelec Sa Verbindungsmodul mit Durchverbindung von Anschlüssen mittels eines oder mehreren beweglichen leitenden Teilen
EP0951096A1 (de) * 1998-04-17 1999-10-20 Schneider Electric Industries SA Anschlussvorrichtung und Anschlussklemme ausgerüstet mit einer solchen Vorrichtung
FR2786611A1 (fr) 1998-11-26 2000-06-02 Jean Jacques Lefebvre Borne de connexion pour l'alimentation en bouclage d'appareils electriques
DE10056940A1 (de) * 2000-06-20 2002-01-10 Weco Electrical Connectors Inc Elektrische Klemmenleiste mit selbstjustierenden Kontaktelementen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2766298B1 (fr) * 1997-07-21 1999-09-17 Schneider Electric Sa Appareil electrique a bornes dotees de cages elastiques
US5978208A (en) * 1997-12-12 1999-11-02 Eaton Corporation Circuit breaker arrangement with improved terminal collar having interlock sections
FR2894722B1 (fr) * 2005-12-09 2009-05-22 Schneider Electric Ind Sas Borne de connexion electrique et appareil electrique de coupure comportant une telle borne

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938191A (en) * 1958-02-24 1960-05-24 Murray Mfg Corp Electrical pressure connector
EP0687032A1 (de) 1994-06-06 1995-12-13 Schneider Electric Sa Schraubauschlussklemme für eine elektrische Vorrichtung
EP0848452A1 (de) * 1996-12-16 1998-06-17 Entrelec Sa Verbindungsmodul mit Durchverbindung von Anschlüssen mittels eines oder mehreren beweglichen leitenden Teilen
EP0951096A1 (de) * 1998-04-17 1999-10-20 Schneider Electric Industries SA Anschlussvorrichtung und Anschlussklemme ausgerüstet mit einer solchen Vorrichtung
FR2786611A1 (fr) 1998-11-26 2000-06-02 Jean Jacques Lefebvre Borne de connexion pour l'alimentation en bouclage d'appareils electriques
DE10056940A1 (de) * 2000-06-20 2002-01-10 Weco Electrical Connectors Inc Elektrische Klemmenleiste mit selbstjustierenden Kontaktelementen

Also Published As

Publication number Publication date
FR3046702B1 (fr) 2019-07-26
EP3190664B1 (de) 2020-09-02
FR3046702A1 (fr) 2017-07-14
CN107039786B (zh) 2021-06-04
CN107039786A (zh) 2017-08-11

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