EP1998352A1 - Kontaktvorrichtung für ein elektrisches Gerät und Signalisierungshilfsgerät, das eine solche Vorrichtung umfasst - Google Patents

Kontaktvorrichtung für ein elektrisches Gerät und Signalisierungshilfsgerät, das eine solche Vorrichtung umfasst Download PDF

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Publication number
EP1998352A1
EP1998352A1 EP08354021A EP08354021A EP1998352A1 EP 1998352 A1 EP1998352 A1 EP 1998352A1 EP 08354021 A EP08354021 A EP 08354021A EP 08354021 A EP08354021 A EP 08354021A EP 1998352 A1 EP1998352 A1 EP 1998352A1
Authority
EP
European Patent Office
Prior art keywords
contact
arm
spring
support
contacts
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
EP08354021A
Other languages
English (en)
French (fr)
Other versions
EP1998352B1 (de
Inventor
Frédéric Marty
Samuel Faure
Gérard Dolo
Hervé Grillot
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1998352A1 publication Critical patent/EP1998352A1/de
Application granted granted Critical
Publication of EP1998352B1 publication Critical patent/EP1998352B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/32—Self-aligning contacts

Definitions

  • the present invention relates to an electrical contact device for an electrical device housed in a housing, comprising at least one so-called fixed contact and at least one so-called mobile contact between an open position of the contacts in which the contact (s) is fixed ( s) are separated from the movable contact (s) and a closed position of the contacts in which the movable contact (s) is (are) in contact with the contact (s) fixed (s), and a contact pressure spring adapted to bring the (the) movable contact (s) in position of contact with the (the) contact (s) fixed (s).
  • the present invention solves these problems and proposes a contact device for an electrical appliance, as well as a signaling auxiliary comprising it, having improved performances in a very small imposed volume.
  • the subject of the present invention is an electrical contact device for an electrical appliance of the kind mentioned above, this device being characterized in that the movable contact (s) is (are) mounted ) at the end of an arm mounted in a so-called first support part, said arm being articulated relative to a second support part and in that it comprises a blade contact pressure spring mounted in said first support piece and having an end portion bearing on the arm and a second end portion resting on the first support piece so as to recall the movable contact (s) in the position of contact with the (the) contact (s) fixed (s).
  • the aforementioned leaf spring is shaped so as to present a uniform deformation over its entire length.
  • the aforementioned leaf spring is folded so as to form a U.
  • the leaf spring has a lower portion cooperating with the first support and having two branches forming a V, each leg having a variable width so that the deformation of this lower part of the spring is uniform over the entire length of the spring. this part.
  • the upper part of the spring cooperating with the contact arm is folded so as to form a U, and has a variable profile so that its deformation is uniform over its entire length.
  • the aforementioned spring comprises a base cooperating with the first support piece so as to ensure the lateral positioning of the spring relative to said first piece and, via the spring, the lateral positioning of the arm relative to said first support piece.
  • the point of application of the force of the spring on the arm is close to the point of articulation of the contact support arm relative to said first support part.
  • the arm supports two so-called mobile contacts intended to cooperate with respectively two fixed contacts.
  • the two contacts are supported by a portion of the contact support arm extending parallel to the axis of articulation of said arm relative to said first support part.
  • the arm is mounted articulated about two axes substantially perpendicular to each other, the rotation of the arm about the first axis allowing the passage of the contact support arm from the position separated from the contacts to the closed position of the contacts, and the rotation of the arm around the second axis allowing compensating for any offset between the two fixed contacts or between the two movable contacts in a direction substantially parallel to the depth of the envelope.
  • the contact arm is articulated relative to the second support part by means of a ball joint.
  • the contact pressure spring comprising a base cooperating with the first support piece so as to ensure the lateral positioning of the spring with respect to the first support piece and, via the spring, the arm with respect to the first support part, this mechanical connection of the base and the first support part is made so as to prevent the rotation of the contact support arm around a third axis perpendicular to the first two.
  • the ball joint is formed by a spherical hollow shape provided in the arm cooperating with a conjugate shape provided in the second support piece.
  • the spring in the form of a blade comprises a rectilinear aperture able to cooperate slidingly with a part of the first support piece so as to allow the translational movement of the leaf spring with respect to said first support piece during the rotation of the contact support arm so as to avoid a hyperstatic positioning of the spring.
  • the first support member is formed by the cover of the apparatus, while the second support member is formed by the housing of the apparatus.
  • first and second support members are formed in a contact carrier shaft rotatably mounted in the housing of the apparatus.
  • the present invention also relates to a signaling auxiliary housed in an envelope comprising a housing and a cover, this auxiliary being characterized in that it comprises a contact-carrier shaft rotatably mounted in the housing of the device (or the cover), fixed contacts integral with the housing (or respectively of the cover), at least one contact device comprising the previously mentioned features taken alone or in combination, mounted in the contact-carrying shaft, comprising an articulated mounted contact support arm relative to the contact-carrying shaft, said shaft constituting the aforementioned first and second support members, and at least one contact device comprising the aforementioned features taken alone or in combination, mounted in the cover, said cover constituting the first part aforementioned contact carrier, the second support member being constituted by the housing.
  • the above-mentioned contact-carrying shaft comprises means for driving the contact-carrying arm (s) of the contact device (s) mounted in the cover in the separation position of the fixed and movable contacts, said (said) arms being recalled (s) in the contact position of the fixed and movable contacts by the (the) spring (s) of contact pressure.
  • the contact device (s) assembled on the shaft is (are) said to be normally open, that is to say that the contact (s) closes (s) when maneuvering the shaft, and the contact device (s) assembled on the cover is (are) said normally closed (s), that is to say that the (the) contact (s) ( s) opens (s) during the maneuver.
  • this auxiliary is controlled by a motor circuit breaker.
  • a motor circuit breaker D in which can be mounted a signaling auxiliary A and a connector C.
  • This signaling auxiliary A is intended on the one hand, to signal the available or unavailable state of the contactor and on the other hand, to signal the triggering of the electrical protection.
  • the available state of the contactor allows the closing of contacts while the unavailable state prevents this closing of the contacts.
  • the transition from an available state to an unavailable state and vice versa is done by means of a manual command.
  • This auxiliary A is housed in a casing 1 of substantially parallelepipedal shape comprising a housing 2 and a lid 3. As shown in FIG. figure 2 this cover 3 comprises means for supporting a contact device 4 according to the invention.
  • This contact device 4 comprises a conductive bridge 5 having two movable contacts 6, 7, said bridge 5 being supported by a contact arm 8 integral with said bridge 5.
  • This arm is mounted inside a support piece 9, said first, integral with the cover 3.
  • a contact pressure spring 10 in the form of a blade, is also placed in the support part between the arm 8 and the cover 3.
  • This contact pressure spring 10 comprises a first portion 11, said lower, having two branches 11a, 11b V-shaped, and a second portion 12, said upper, folded so as to form a U.
  • This first portion 11 has two portions 11c, 11d of different widths connected by part diagonally 11d.
  • the second portion 12 has a different width over its entire length, and the two parts have a central opening 13,14, the two openings together forming an arrow, this shape allowing an equal deformation of the spring.
  • This opening 13, 14 provided in the leaf spring cooperates with a slide 25 provided in the cover 3 ( Figs. 6.7 and 8 ), so as to allow sliding mounting of the leaf spring relative to the cover, so as to leave said spring a degree of freedom for the operation of the system.
  • This lower portion 11 of the spring 10 has at its free end 11c a base 15 intended to cooperate with a recess provided in the cover to prevent the lateral displacement of the spring 10 in the cover 3, and thus the arm on which the spring is supported. .
  • the free end 12a of the second portion 12 of the spring is intended to bear on the conductive bridge 5 so that it is biased by the spring towards the fixed contacts 16,17 integral with the housing 2 ( figure 3 ) while the portion 12b of the spring cooperating with the lid 3 is supported on said lid 3.
  • said end 12a of the spring is shaped like a fork and cooperates with a notch 5a having a curved bottom ( fig.5 a) provided in the conductive bridge 5, said notch 5a being surrounded by two openings for receiving the two ends of the foregoing fork.
  • This notch allows the conductor bridge to rotate around the longitudinal centerline axis Y of the conductor bridge so as to allow the catch of any offset between the two fixed contacts or the two movable contacts depending on the depth of the housing.
  • the arm 8 supporting the conductive bridge 5 is rotatably mounted relative to a ball portion 20 formed at the end of a rod 21 projecting from the inner surface of the housing 2, constituting a second support piece, by the intermediate of a recess 22 of partially spherical shape provided at the end of said arm and cooperating with said ball 20.
  • the arm 5 can thus pivot about a first axis X parallel to the plane of the cover and allowing the pivoting of the door bridge contact between the separated position of the contacts and the closed position of the contacts, and the aforementioned second axis Y, the latter being perpendicular to the first axis X and passing through the aforementioned rod 21.
  • a contact-carrying shaft 23 is rotatably mounted inside the housing 2 and supports a contact device 4 according to the invention.
  • This contact device comprises, as already described above, a conductive bridge 5 ( fig.9 and 10 ) having two movable contacts 6,7 supported by a contact arm 8 integral with said bridge 5.
  • This arm 8 is mounted in a housing provided in the shaft and is rotatably mounted by its end located on the side opposite the contacts. movable relative to a portion (not shown) of the rotary shaft 23.
  • the arm 8 has a recess 22 cooperating with a ball joint (not shown) forming an integral part of the shaft.
  • a leaf spring 10 as previously described ( figs.11,12 ), is also mounted in the aforementioned housing provided in the contact shaft. This spring is interposed between the shaft and the bridge.
  • the apparatus comprises a contact device 4 according to the invention mounted in the cover (as shown in FIG. figure 2 ) and a device according to the invention mounted in the rotary shaft (as illustrated in FIG. figure 5 ).
  • the conductive bridge 5 and the spring 10 are mounted in the cover, and the conductive bridge is rotatably mounted relative to the ball formed at the end of the rod belonging to the housing 2.
  • the bridge and the spring are mounted in a housing of said shaft.
  • the leaf spring is supported on said shaft and the conductive bridge is rotatably mounted relative to said shaft.
  • the above-mentioned contact-holder shaft 23 comprises means 24 for driving the contact-carrying arm 8 of the contact device mounted in the cover 3 in the position of separation of the fixed and mobile contacts, said arm being recalled in the contact position. fixed and movable contacts by the contact pressure spring.
  • the contact device 4 associated with the cover 3 is in the closed contact position, the spring 10 being decompressed.
  • the spring 10 is slightly compressed by the slight displacement of the spring 10.
  • the contact device assembled on the shaft is said normally open (the electrical signal does not pass), that is to say that the (the) contact (s) closes (ent) during the operation of the shaft.
  • the contact device assembled on the cover is said normally closed (the electrical signal passes), that is to say that the contacts open during the operation of the shaft (the electrical signal no longer passes).
  • the device mounted in the contact-carrier shaft makes it possible to signal the available or unavailable state of the contactor.
  • the device provided in the cover allows to signal only that the protection is triggered.
  • the function performed by the device provided on the cover traditionally requires a so-called return spring penalizing for the overall functional chain, because this spring is a consumer of mechanical energy. By assembling it on the cover, the return spring is no longer needed, which reduces the energy consumed in the overall functional chain.
  • the use of a blade contact pressure spring reduces the size of the contact pressure spring.
  • the articulation of the arm makes it possible to use a leaf spring which is less bulky than a coil spring in particular when it is desired to produce a force of very low value.
  • the use of a uniformly flexed leaf spring reduces the size of the spring and makes it possible to create a leaf spring entering the available volume.
  • the articulation of the contact arm around two axes makes it possible to obtain a certain mobility between the two contacts.
  • the articulation of the arm is formed by a ball joint.
  • the rotation guidance is carried out along three axes.
  • the rotation around the third axis is blocked by the base on the support part. This mobility between the contacts makes it possible to establish the contact between the fixed and mobile contacts regardless of the relative offset of the fixed or moving contacts depending on the depth of the envelope.
  • the articulation around the two axes is performed without additional parts.
  • the fact of providing two contacts on a conductive bridge makes it possible to distribute the isolation distance on the two contacts. Thus, the height of the contact is reduced by half.
  • the contact carrier is guided transversely without friction. This is made possible by the fact that the lower support of the spring is positioned, by a base, in the support part, the spring transmitting this positioning to the contact arm. Thus, there is no creation of parasitic friction or use of additional parts.
  • the force of the leaf spring is divided by the fact that the point of application of the spring force is close to the patella.
  • the geometry of the articulated arm and leaf spring system is designed in such a way that the spring is manipulable.
  • the invention makes it possible to produce high-performance contact devices of very small size. These devices can be actuated by motor circuit breakers having a force of low value imposed by construction.
  • the invention is advantageously applicable to contact devices for signaling auxiliaries for motor circuit breakers and can also be implemented for example in circuit breakers, switches, contactors, disconnectors, so-called ultra-terminals devices.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Breakers (AREA)
  • Contacts (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP20080354021 2007-06-01 2008-03-14 Kontaktvorrichtung für ein elektrisches Gerät und Signalisierungshilfsgerät, das eine solche Vorrichtung umfasst Active EP1998352B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0703908A FR2916899B1 (fr) 2007-06-01 2007-06-01 Dispositif de contact pour un appareil electrique et auxiliaire de signalisation comportant un tel dispositif

Publications (2)

Publication Number Publication Date
EP1998352A1 true EP1998352A1 (de) 2008-12-03
EP1998352B1 EP1998352B1 (de) 2012-08-29

Family

ID=38922736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080354021 Active EP1998352B1 (de) 2007-06-01 2008-03-14 Kontaktvorrichtung für ein elektrisches Gerät und Signalisierungshilfsgerät, das eine solche Vorrichtung umfasst

Country Status (4)

Country Link
EP (1) EP1998352B1 (de)
CN (1) CN101315837B (de)
ES (1) ES2390185T3 (de)
FR (1) FR2916899B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3073507A1 (de) * 2015-03-24 2016-09-28 LSIS Co., Ltd. Vorrichtung für einen hilfskontakt eines schutzschalters

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2981192B1 (fr) * 2011-10-10 2013-11-15 Schneider Electric Ind Sas Dispositif de transcription d'un position mecanique en un etat electrique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634819A (en) * 1984-06-20 1987-01-06 Mitsubishi Denki Kabushiki Kaisha Movable contact assembly for a switch
EP1148529A1 (de) * 2000-04-19 2001-10-24 Abb Control Hilfseinheit zur Befestigung an einem elektrischen Schalter
DE202005015448U1 (de) 2005-09-30 2005-12-08 Siemens Ag Elektromagnetisches Schaltgerät

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19856678C2 (de) * 1998-12-04 2002-01-24 Moeller Gmbh Elektrische Schaltvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634819A (en) * 1984-06-20 1987-01-06 Mitsubishi Denki Kabushiki Kaisha Movable contact assembly for a switch
EP1148529A1 (de) * 2000-04-19 2001-10-24 Abb Control Hilfseinheit zur Befestigung an einem elektrischen Schalter
DE202005015448U1 (de) 2005-09-30 2005-12-08 Siemens Ag Elektromagnetisches Schaltgerät

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3073507A1 (de) * 2015-03-24 2016-09-28 LSIS Co., Ltd. Vorrichtung für einen hilfskontakt eines schutzschalters
US9761400B2 (en) 2015-03-24 2017-09-12 Lsis Co., Ltd. Apparatus for auxiliary contact of circuit breaker

Also Published As

Publication number Publication date
FR2916899A1 (fr) 2008-12-05
CN101315837A (zh) 2008-12-03
EP1998352B1 (de) 2012-08-29
ES2390185T3 (es) 2012-11-07
CN101315837B (zh) 2012-09-26
FR2916899B1 (fr) 2009-07-10

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