EP1244123A1 - Vorrichtung zur Gewährleistung eines elektrischen Storms zwischen gelenkten leitenden Armen - Google Patents

Vorrichtung zur Gewährleistung eines elektrischen Storms zwischen gelenkten leitenden Armen Download PDF

Info

Publication number
EP1244123A1
EP1244123A1 EP02076341A EP02076341A EP1244123A1 EP 1244123 A1 EP1244123 A1 EP 1244123A1 EP 02076341 A EP02076341 A EP 02076341A EP 02076341 A EP02076341 A EP 02076341A EP 1244123 A1 EP1244123 A1 EP 1244123A1
Authority
EP
European Patent Office
Prior art keywords
arm
conductive
contact
conductive arm
arms
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.)
Withdrawn
Application number
EP02076341A
Other languages
English (en)
French (fr)
Inventor
Michel Lauraire
Didier Vigouroux
Christophe Poulain
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 EP1244123A1 publication Critical patent/EP1244123A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
    • H01H2001/5838—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal using electrodynamic forces for enhancing the contact pressure between the sliding surfaces

Definitions

  • the present invention relates to a device ensuring the passage of a electric current between several articulated conducting arms.
  • This device is particularly suitable for the passage of strong permanent currents at low voltage and is also capable of withstanding exceptional short circuit currents.
  • the invention also relates to an electrical appliance comprising at least one such device.
  • the articulated devices ensuring the passage of an electric current are especially used in electrical devices such as switches, circuit breakers or contactor-circuit breakers to advantageously replace a contact braid placed between a fixed conductor and a connected articulated mobile conductor electrically with the fixed conductor.
  • a braid poses problems indeed size, heating, manufacturing cost and mechanical effort in especially when passing a strong current.
  • a flexible blade device is also not suitable for the passage of strong permanent currents.
  • a device articulated allows on the contrary to correctly pass a strong current provided to have a sufficiently well defined and controlled contact area to guarantee a low contact resistance and to avoid any risk of welding in the joint.
  • the document EP0358286 already describes an articulation device for the passage of strong electric current.
  • This device includes an articulation zone surrounding the pivot axis of a movable contact lever.
  • a fixed conductor has two conductive ends which grip the area like pincers of articulation of the movable contact lever, on at least three contact points.
  • the OR the different contact planes thus created are therefore substantially parallel to the axis of pivoting.
  • this solution on the one hand calls for a number of parts important and on the other hand does not allow to obtain a precise and constant dosage of the contact pressure, allowing to take into account the manufacturing tolerances of different rooms.
  • the present invention therefore aims to design a device ensuring the passage of a strong electric current between two or more articulated conducting arms.
  • This device must be simple, require few parts and must allow adjustment easily at a determined threshold the contact clamping pressure during manufacture of each device, so as to obtain a high predefined, stable contact pressure and homogeneous on real passage sections without hampering the movement of the articulation of the conductive arms.
  • This contact pressure should be easily reproducible during mass production of this device.
  • the invention describes a device intended to ensure the passage of a electric current in a set of conductive arms comprising at least one first extreme conductive arm and a second opposite extreme conductive arm, all of the conductive arms being articulated relative to each other according to a pivot axis.
  • the device comprises a through cylindrical pivot all of the conducting arms in a direction parallel to the pivot axis and having two ends, a first end of the pivot being fixed to the first extreme conductive arm and a second end comprising a retaining edge, and the device comprises an elastic member located between the retaining flange and a external face of the second opposite extreme conducting arm.
  • the first end of the pivot is fixed after application of a predefined pressure force between the arm extreme conductor and the pivot retaining edge, by a welding operation, bonding or crimping.
  • an internal face of a second conductive arm of the conductive arm assembly comprises several contact zones which are in contact with a flat surface of an internal face of a first conductive arm, adjacent to the second conductive arm, forming a contact plane perpendicular to the pivot axis.
  • the contact areas advantageously consist of three bosses convex, of identical size, having a rounded or hemispherical shape and uniformly distributed on the internal face of the second arm.
  • a device 5 passage of an electric current comprises a set of conductive arms composed of a first arm 10 and a second arm 20.
  • These arms are electrical conductors and are made for example from copper. They are articulated with respect to each other along a pivot axis X.
  • the object of the invention is to get the best electrical contact at the joint between the arms conductors without penalizing the articulation movement too much.
  • This device can be used in an electrical device of the switch, circuit breaker or contactor-breaker type to advantageously replace a contact braid placed between a fixed conductor and a movable conductor electrically connected to the fixed conductor.
  • it is any one of the conductive arms 10, 20 which is fixed by relative to the electrical device and the other which is movable along the pivot axis X.
  • the conductive arms 10, respectively 20, comprise, in an area close to the joint, an internal face 11, respectively 21, and an external face 12, respectively 22, substantially parallel to each other.
  • One of the two arms conductors for example the first arm 10 in the example of FIG. 1, has a flat surface on its internal face 11. This flat surface is preferably circular to cover a rotation around the pivot axis X.
  • the other arm conductor, the second arm 20 in the example of FIG. 1, has several zones of contacts 30 on its internal face 21. These contact zones 30 come into contact with the planar surface of the internal face 11 of the first arm 10, thus forming a plane contact which is substantially perpendicular to the pivot axis X. In a way preferred, there are three contact areas of identical size so as to define precisely the contact plane.
  • the contact areas may consist of three bosses 30 convex, prominent and uniformly distributed on the internal face 21. These bosses 30 are produced for example by pushing back on the conductive arm 20 and are preferably rounded or hemispherical, although we can also consider a triangular shape or a flat shape.
  • Figure 5 details a view from above a second conductive arm 20 in which the three bosses 30 are positioned on the internal face 21, at an angle of about 120 ° between them, around of the pivot axis X.
  • the surface of the bosses 30 can be covered with a deposit silver to improve electrical contact or even a graphite silver deposit for limit the risks of welding.
  • the bosses facilitate also the evacuation of any debris or dust between the conductive arms, likely to obstruct the flow of current and cause possible jamming of the joint.
  • the mechanism described in this device according to the invention allows consider many variations for a joint with more than two conductive arms, such as those shown in FIGS. 2, 3 and 4 in which the device ensuring the passage of an electric current has for example three arms conductors in the examples of Figures 2 and 4 and five conductive arms in the example of figure 3.
  • the contact areas of figures 2, 3 and 4 are similar to those described for figure 1.
  • Figure 2 shows a set of conductive arms consisting of an arm upper conductor 100, a middle conductive arm 200 and a conductive arm lower 110.
  • the upper arm 100 and the lower arm 110 constitute the arms extremes and each have an external face 102 (respectively 112) turned towards the outside of the device and an internal face 101 (respectively 111) facing inside the device.
  • the external and internal faces are substantially parallel between them.
  • the middle arm 200 has an upper face 202 facing the arm upper 100 and substantially parallel to the internal face 101, as well as a face lower 201 facing the lower arm 110 and substantially parallel to the face internal 111.
  • the upper face 202 of the middle arm 200 has a flat surface which is in contact with several contact zones present on the internal face 101 of the upper arm 100, analogously to what has been described previously in reference to FIG. 1.
  • the underside 201 of the median arm 200 comprises several contact areas which are in contact with a flat surface on the face internal 111 of the lower arm 110.
  • the upper 100 and lower 110 arms are therefore placed on either side of the middle arm 200 so as to obtain a joint between conductors 100 and 200 on the one hand and between conductors 110 and 200 on the other hand.
  • a median conductive arm 140 has several contact zones on its lower face as well as on its upper face.
  • the contact areas of the upper face of the middle arm 140 are in contact with the flat surface of an internal face of an upper arm 220, while the zones of contact of the underside of the middle arm 140 are in contact with the flat surface of an inner face of a lower arm 230.
  • the upper arm 220 and the lower arm 230 are then connected together to form a single arm 240.
  • the conductive arms 220 and 230 must be sufficiently elastic to guarantee contact pressure.
  • the two series of zones of contact of the median arm 140 each consist of three bosses obtained by pushed back and distributed at 120 °, it is possible to offset by 60 ° the two series of bosses (see Figure 4) relative to each other, to allow a more Easy.
  • the device described in FIG. 4 has the advantage of doubling the contact zones with respect to the device of FIG. 1 since the conductive arm median 140 is in contact with the single arm 240 by means of two series of zones contact instead of a single series, which allows to increase the surfaces of contact of the joint and therefore the intensity of the admissible current in the joint.
  • the device shown schematically in Figure 3 includes a conductive arm upper 120, a lower conducting arm 130 and two conducting arms 125,135 intermediaries surrounding a median conductive arm 210.
  • the median arm 210 has two flat surfaces on its two upper and lower faces.
  • the arm intermediate 125 has a lower face comprising several contact zones which are in contact with the flat surface of the upper face of the middle arm 210.
  • the upper arm 120 has an internal face comprising several zones of contacts that are in contact with a flat surface on the upper side of the arm intermediate 125.
  • the intermediate arm 135 has an upper face comprising several contact zones which are in contact with the flat surface of the lower face of the middle arm 210.
  • the lower arm 130 has an internal face comprising several contact zones which are in contact with a flat surface on the underside of the intermediate arm 135.
  • the device according to the invention also comprises, for holding the arms conductors between them, a cylindrical pivot 31 which is introduced into a circular hole central present in each conductive arm.
  • the pivot 31 crosses the different arms conductors of the device in a direction parallel to the pivot axis X.
  • Figure 5 is shown a top view of a second conductive arm 20 conforms in Figure 1 in which the conductive arm 20 has a circular central hole 23 for the introduction of the pivot 31, surrounded by three bosses 30 uniformly distributed and making an angle of about 120 ° between them.
  • the cylindrical pivot 31 has two opposite ends.
  • a first end 34 is fixed to an extreme conductive arm.
  • the second end of the pivot 31 has a retaining flange 33.
  • the device also includes a elastic member 32 which is positioned between the retaining rim 33 and the external face 22,112 of an opposite extreme conductive arm.
  • the elastic member consists of a spring or preferably of a elastic washer 32 (such as a "Belleville” type washer), for example of shape conical, advantageous for reasons of compactness.
  • a elastic washer 32 such as a "Belleville” type washer
  • the size of this elastic washer 32 is adapted so that once mounted, it can get stuck between the retaining flange 33 of the pivot 31 and the external face of the conductive arm extreme opposite 20,110,130,230.
  • the measurement at a predetermined value of the pressure force exerted before the fixing the first end 34 of the pivot 31 makes it possible to obtain automatically, during the manufacturing processes of such devices, uniform pressure and stable on contact areas, regardless of imperfections and tolerances different parts constituting the device. This is essential to obtain reproducible in time a pivoting of the articulated arms without friction excessive as well as an optimal quality of contact between the articulated arms, capable of withstand strong strong currents and resist electrodynamic forces during a short circuit.
  • the cylindrical pivot 31 is for example made of steel or dural without special characteristic of electrical conduction. Indeed, in the device described above, most of the current flowing through the joints propagates to through the contact areas 30 and not through the pivot 31.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Breakers (AREA)
EP02076341A 2001-03-23 2002-03-12 Vorrichtung zur Gewährleistung eines elektrischen Storms zwischen gelenkten leitenden Armen Withdrawn EP1244123A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0104307 2001-03-23
FR0104307A FR2822588B1 (fr) 2001-03-23 2001-03-23 Dispositif assurant le passage d'un courant electrique entre des bras conducteurs articules

Publications (1)

Publication Number Publication Date
EP1244123A1 true EP1244123A1 (de) 2002-09-25

Family

ID=8861730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02076341A Withdrawn EP1244123A1 (de) 2001-03-23 2002-03-12 Vorrichtung zur Gewährleistung eines elektrischen Storms zwischen gelenkten leitenden Armen

Country Status (2)

Country Link
EP (1) EP1244123A1 (de)
FR (1) FR2822588B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010040906A1 (fr) * 2008-10-09 2010-04-15 Schneider Electric Industries Sas Dispositif et ensemble coulissant de connexion electrique, en particulier pour bloc de protection differentielle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546366A (en) * 1946-08-22 1951-03-27 Eola Lindae Switch
US3356815A (en) * 1962-05-18 1967-12-05 Westinghouse Electric Corp Electric knife switches with simplified contact pressure adjustments
EP0358286A2 (de) * 1988-09-08 1990-03-14 Siemens Aktiengesellschaft Stromübertragende Gelenkanordnung für einen Kontakthebel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546366A (en) * 1946-08-22 1951-03-27 Eola Lindae Switch
US3356815A (en) * 1962-05-18 1967-12-05 Westinghouse Electric Corp Electric knife switches with simplified contact pressure adjustments
EP0358286A2 (de) * 1988-09-08 1990-03-14 Siemens Aktiengesellschaft Stromübertragende Gelenkanordnung für einen Kontakthebel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010040906A1 (fr) * 2008-10-09 2010-04-15 Schneider Electric Industries Sas Dispositif et ensemble coulissant de connexion electrique, en particulier pour bloc de protection differentielle
CN102177567A (zh) * 2008-10-09 2011-09-07 施耐德电器工业公司 电子连接装置和滑动组件，尤其用于差动保护单元
CN102177567B (zh) * 2008-10-09 2014-03-12 施耐德电器工业公司 电子连接装置和滑动组件，尤其用于差动保护单元

Also Published As

Publication number Publication date
FR2822588B1 (fr) 2003-07-04
FR2822588A1 (fr) 2002-09-27

Similar Documents

Publication Publication Date Title
FR2714520A1 (fr) Appareil électrique interrupteur à contacts séparables.
EP0796499B1 (de) Anschlussklemme auf sammelschienen für lastschalter oder mehrpolige trennbare systeme
EP1575067A1 (de) Schwenkbarer Erdungsschalter mit direkter Einführung und einfacher Bewegung
EP3712908B1 (de) Schutzvorrichtung gegen überspannungen
EP0148051B1 (de) Verfahren und Einrichtung zum festen elektrischen Verbinden von Litzen auf Stromzufuhrflächen
FR3119049A1 (fr) Connecteur de modules avec au moins un ensemble de contact déplaçable
EP1901320A1 (de) Kontaktvorrichtung für ein Elektrogerät und Elektrogerät mit derartiger Vorrichtung
FR2777111A1 (fr) Disjoncteur
FR2468196A1 (fr) Interrupteur electrique a action rapide
FR2818434A1 (fr) Appareil de coupure electrique pour installation electrique
FR2828760A1 (fr) Ensemble a lames pour disjoncteur, et procede d'interruption de circuit
EP1244123A1 (de) Vorrichtung zur Gewährleistung eines elektrischen Storms zwischen gelenkten leitenden Armen
EP1933425B1 (de) Gesicherter elektrischer Kontakt
EP2438651A1 (de) Einrichtung zum verbinden eines elektrischen verbinders und eines abgeschirmten elektrischen koaxialkabels und entsprechender elektrischer verbinder
FR2503444A1 (fr) Interrupteur a rupture brusque
FR2683397A1 (fr) Douille electrique pour interconnecter des circuits sur une puce et des circuits sur un substrat.
WO2010106126A1 (fr) Conducteur simplifié pour appareillage electrique et appareillage electrique comportant au moins un tel conducteur
EP1850361B1 (de) Überstrom Aktor mit schneller Auslösung und Verwendung
EP0112757A1 (de) Elektromagnetische Strommessvorrichtung mit schwenkbaren Armen
EP0113734A1 (de) Elektrischer schalter mit vorgespannter kontaktfeder
FR2828329A1 (fr) Dispositif pour l'extinction d'un arc electrique
WO2020188052A2 (fr) Dispositif de protection contre les surtensions
BE1000544A6 (fr) Contacteur perfectionne pour socles tripolaires et/ou similaires.
FR2535122A1 (fr) Dispositif antitorsion pour cable electrique
FR3049760B1 (fr) Appareil electrique de type disjoncteur

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20021014

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080205