EP0268518B1 - Mécanisme d'interrupteur à balai conducteur à double pivot, et interrupteur comportant un tel mécanisme, notamment pour courant alternatif - Google Patents

Mécanisme d'interrupteur à balai conducteur à double pivot, et interrupteur comportant un tel mécanisme, notamment pour courant alternatif Download PDF

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Publication number
EP0268518B1
EP0268518B1 EP87402409A EP87402409A EP0268518B1 EP 0268518 B1 EP0268518 B1 EP 0268518B1 EP 87402409 A EP87402409 A EP 87402409A EP 87402409 A EP87402409 A EP 87402409A EP 0268518 B1 EP0268518 B1 EP 0268518B1
Authority
EP
European Patent Office
Prior art keywords
fixed support
plane
switch mechanism
zones
zone
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
EP87402409A
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German (de)
English (en)
French (fr)
Other versions
EP0268518A1 (fr
Inventor
Roger Parlatore
Alain Leluc
Christian Besse
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.)
Legrand SA
Original Assignee
Legrand SA
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 Legrand SA filed Critical Legrand SA
Priority to AT87402409T priority Critical patent/ATE93992T1/de
Publication of EP0268518A1 publication Critical patent/EP0268518A1/fr
Application granted granted Critical
Publication of EP0268518B1 publication Critical patent/EP0268518B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • 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

Definitions

  • the present invention relates generally to switches of the type of those usually used for controlling the electrical supply of any circuit.
  • Such a switch comprises, in a housing, and under the control of an operating member, rocking key or push button for example, which, specific to its actuation, is available to the user, a set of parts commonly called mechanism, which forms the active part.
  • the present invention relates more particularly to the case where such a mechanism comprises, mounted movably between a fixed yoke and at least one fixed contact pad, at least one conductive brush, which is articulated to the fixed yoke, itself conductive, and which , under the control of the associated operating member, is capable of taking one or the other of two positions, one for which, by a support zone, it is in abutment against the fixed contact pad , the other for which, it is remote from it, either that, being a simple switch, it is not then in abutment against any other fixed contact pad or that it is in abutment against a simple rest pad, that is, for example being an inverter, it also bears against another fixed contact pad for this second position.
  • the fixed yoke usually comprises for this purpose a pivoting zone and the conductive brush itself comprises, for cooperation with this pivoting zone, and following for example a knife joint, a zone which, for simple convenience, will be referred to below as the contact zone, this zone normally effectively remaining permanently in contact with the pivoting zone of the fixed yoke.
  • Each of these twists translates in practice by the establishment of a mini-arc between the contact area of the conductive broom and the pivoting area of the fixed yoke, which gradually leads to degradation of the conductive broom and / or the fixed yoke, to the detriment of the desired current transmission.
  • the conductive broom for example, is thus progressively the object of a surface oxidation, and, when it is made of brass, it is jointly the object of a structural evolution due to a migration of zinc towards its surface.
  • the conductive brush generally has a loop configuration, and it is used for both '' other of its two positions, two distinct pivot zones, the conductive brush comprising, itself, for cooperation, each respectively, with these pivot zones, two distinct contact zones, and each of the pivot zones defining a pivot with the corresponding contact zone.
  • the present invention generally relates to a provision which makes it possible to overcome this difficulty in a simple and effective manner and which also leads to other advantages.
  • a switch mechanism of the type comprising, mounted movably between a fixed yoke and at least one fixed contact pad, at least one conductive brush, which generally has a configuration in loop, which is articulated to the fixed yoke, itself conductive, and which, under the control of an operating member available to the user, is capable of taking one or the other of at least two positions, one for which, by a support zone, it bears against the fixed contact pad, the other for which it is at a distance therefrom, said fixed clevis comprising, for articulation of the conductive broom, and for both of its positions, two distinct pivot zones, and said conductive brush and said conductive brush itself comprising, for cooperation, each respectively, with said pivot zones, two separate contact zones, each of the pivot zones defining a pivot with the corresponding contact zone, characterized in that, the two pivots thus defined are each arranged along a separate axis and perpendicular to the plane of movement of the conductive broom and in that the two pivots thus defined are each arranged
  • the switch mechanism according to the invention is characterized by the implementation of a real double pivot for the articulation of the conductive brush to the fixed yoke.
  • a double-pivot conductive brush switch mechanism according to the invention is thus advantageously able to allow switching of currents larger than a mechanism. comparable switch with only one pivot for the articulation of its conductive brush.
  • the two contact zones of the conductive brush are, permanently, apart from possible twists, in engagement, both, with the pivot zones of the fixed fork, whatever the position of this conductive broom.
  • loop configuration of the conductive brush advantageously combines with the implementation of two pivots for this conductive brush.
  • the switch mechanism 10 comprises, overall, in a manner known per se, mounted mobile between a fixed yoke 11 and at least one fixed contact pad 12A, 12B, a conductive brush 13, which is articulated to the fixed yoke 11, itself conductive, and which, under the control of an operating member 14 available to the 'user, is likely to take one or the other of two positions, one, Figure 1, for which, by a support area 15A, it is supported against the fixed contact pad concerned 12A, l other, Figure 4, for which it is remote from it.
  • a contact pad can be provided, for example a contact pad 12A, as shown in solid lines in FIGS. 1 and 4.
  • such a contact pad 12B can also be provided, but it is then a simple rest pad, without active intervention in the circuit whose electrical supply is to be controlled.
  • connection terminals 16 and 17A are each respectively in connection with connection terminals 16 and 17A.
  • this contact pad 12B also being in connection with a connection terminal 17B to be able to serve as an active contact pad if desired.
  • the yoke 11 and the contact pads 12A, 12B are in one piece with their respective connection terminals, and the corresponding parts are in practice solid parts suitably cut, machined or stamped.
  • the switch mechanism 10 as well constituted is arranged in a housing of insulating material.
  • the operating member 14 is a button, which, for example by lateral pins 20, of triangular or circular transverse contour, is pivotally mounted on the housing 18, along the double circular arrow F, and which, by a finger 21, is capable of acting on the conductive brush 13, this finger 21 extending for this purpose protruding on its lower surface, substantially perpendicular thereto, and having for its contact with said conductive brush 13, a tapered and rounded end.
  • the fixed yoke 11 comprises, in practice, parallel to one another, for one and the other of the two positions of the conductive brush 13, two distinct pivot zones 23A, 23B each belonging respectively to a separate axis and perpendicular to the plane of movement of the conductive brush, and said conductive brush 13 itself comprising, for cooperation, each respectively, with said pivot zones 23A, 23B, two distinct contact zones 24A, 24B.
  • the pivot zones 23A, 23B of the fixed yoke 11 are both oriented in the same direction, in this case upwards, in affecting both the same face of such a yoke 11, in this case the front face of the solid part which the latter forms with the connection terminal 16 which is associated with it.
  • each of these pivoting zones 23A, 23B is simply constituted, in a manner known per se, by a groove with a V-shaped cross-section affecting the yoke 11 in hollow.
  • each of these grooves has the edge, which forms the bottom, leveled by a planar facet.
  • the conductive brush 13 has, generally, a loop configuration, but, according to the invention, the loop which it forms is open and it closes on the fixed yoke 11, the opening ends of this loop forming by themselves the corresponding contact zones 24A, 24B.
  • the open loop which the conductive brush 13 thus forms is in one piece, by appropriate cutting and folding of a single metal strip, and, in the embodiments shown in FIGS. 1 to 6 , 10 and 11 to 22, it is a symmetrical loop with respect to its middle zone.
  • the conductive brush 13 comprises, on the one hand, between two support zones 15A, 15B each suitable for its support on the contact pad 12A, 12B corresponding, a median strip 26, through which it is able to be under the control of the associated operating member 14, which, common to said support zones 15A, 15B, extends continuously from one to the other of these, and, on the other hand, each in turning back from said median strip 26, at the ends thereof, at least one tab 27A, 27B whose own end forms the corresponding contact area 24A, 24B.
  • the conductive brush 13 comprises, in this form of embodiment, each arranged respectively on either side of its median strip 26, parallel to each other, two tabs 27A-27 ⁇ A, 27B-27 ⁇ B, and these are the ends of these tabs 27A-27 ⁇ A, 27B-27 ⁇ B which jointly form the corresponding contact zones 24A, 24B.
  • the bearing zones 15A, 15B of the conductive brush 13 are flat, they each carry, projecting from their lower surface, for contact with the corresponding fixed contact pad 12A, 12B, a contact grain 28A, 28B, and each of the tabs 27A-27 ⁇ A, 27B-27 ⁇ B, the ends of which jointly form a contact zone 24A, 24B is in continuity with the corresponding support zone 15A, 15B, the current part at less, of such a tongue 27A-27 ⁇ A, 27B-27 ⁇ B between its end forming the contact zone (24A, 24B) and the bearing zone (15A, 15B), extends substantially along the plane of said zone d support 15A, 15B, while the associated central strip 26 has an overall configuration in M, with rounded angles, that of the legs 29A, 29B of this central strip 26 which corresponds to such a support area 15A, 15B diverging, , of the plan of this one.
  • the operating member 14 is stable.
  • the conductive brush 13 establishes electrical continuity between the fixed yoke 11 and the fixed contact pad 12A, and therefore between the corresponding connection terminals 16 and 17A, and for the position in FIG. 4 , it establishes electrical continuity between this fixed yoke 11 and the fixed contact pad 12B, and therefore between the corresponding connection terminals 16 and 17B.
  • the conductive brush 13 is engaged, by one and the other of its contact zones 24A, 24B, with, each respectively, the corresponding pivot zones 23A, 23B of the fixed yoke 11.
  • the conductive brush 13 comprises, as before, a central strip 26 ⁇ by which it is able to be under the control of the associated operating member 14, by the finger 21 thereof. ci, but, it further comprises in this case, as a variant of the previous cusp arrangement, two U-shaped connection zones 32A, 32B connecting, each respectively, continuously, the ends of this central strip 26 ⁇ to the contact zones 24A , Corresponding 24B, one of the strands of at least one of these connection zones 32A, 32B, and, for example, in the case of an inverter, one of the strands of each of these, that which is on the side opposite to the central strip 26 ⁇ , then being adapted to directly form by itself a support zone 15A, 15B for the whole.
  • the central strip 26 ⁇ has, overall, in its central zone, a V-shaped configuration 32.
  • the support zones 15A, 15B each comprise, respectively, projecting, a contact grain 28A, 28B.
  • the conductive brush 13 has a loop configuration of the type described with reference to Figure 5 above.
  • the pivot zones 23A, 23B of the fixed yoke 11 are arranged back to back, each affecting respectively two opposite faces of this yoke 11.
  • the conductive brush 13 is engaged, by a closed contour cutout 35 affecting its central zone, on the fixed yoke 11, and, at least one of the contact zones 24A, 24B by which it is articulated thereto is constituted by the end of a corrugated tongue formed by means of such a cut 35.
  • these corrugated tongues 36A, 36B each have only one corrugation in the general shape of a half-wave, with the concavity of the latter turned in opposite directions relative to the other.
  • a corrugated tongue 36B only for the single contact area 24B of the conductive brush 13, the other, 24A, contact areas of the latter being then directly formed by the edge of its cutout 35, and, more precisely, by the edge of the corresponding transverse edge thereof.
  • the finger 21 of the operating member 14 comprises two arms which each bear respectively on the corresponding longitudinal edges of the conductive brush 13.
  • two fingers 21A, 21B are provided on the operating member 14, on either side, each respectively, of the yoke 11.
  • the operating member 14 is constituted by a tilting mounted button.
  • the corresponding push button is offset, relative to the median plane of the fixed yoke 11, median plane which is perpendicular to the plane of movement of the conductive brush 13 and which is plumb with the upper face of the fixed yoke 11, and the loop that forms the conductive brush 13 is asymmetrical.
  • the conductive brush 13 suffices for the recall of the corresponding operating member 14, without it being necessary to use an additional spring to do this.
  • FIG. 10 is, as a whole, of the type of that represented in FIG. 5.
  • the action of the operating member 14 on the conductive brush 13 is effected by means of a part 21 ⁇ , commonly known as the driver, distinct from this operating member 14.
  • the actuator 14 which, as before, is a tilting mounted button, is engaged, by a yoke 41, with such a coach 21 ⁇ , and the latter is, itself, pivotally mounted on the corresponding housing 18.
  • the axis of the journals of the operating member 14 is not necessarily confused with that of the journals of the coach 21 ⁇ , and only that of the latter must remain fixed relative to the fixed yoke 11.
  • the fixed yoke 11 is, with its pivot zones 23A, 23B, no longer formed by a solid piece, but by a strip, which is suitably folded accordingly, also forming by itself the associated connection terminal 16, and which is suitably buttressed by the corresponding housing 18, a lug 42 thereof being for example inserted between its pivot zones 23A, 23B.
  • the convex central portion 32 of the central strip 26 ⁇ of the conductive brush 13 is adjusted to the rounded end of the associated driver 21 ⁇ , for fitting thereon.
  • FIGS. 11 to 22 are also, as a whole, of the type of that described in reference to figure 5.
  • the pivoting mounting of the operating member 14 takes place by a pin 44, which crosses this operating member 14 transversely, by means of a bore 45 provided for this purpose. effect therein, and which, at its ends, jointly crosses the corresponding longitudinal walls 46 of the housing 18, by means of holes 47 also provided for this purpose therein.
  • this pivot axis 44 can for example be ensured by a cover, which, attached to the operating member 14, jointly covers the latter and the portions concerned of the longitudinal walls 46 of the housing 18.
  • the pivot axis 44 is substantially arranged in the median plane of the fixed yoke 11, median plane which is perpendicular to the plane of movement of the conductive brush 13 and which is located plumb with the upper face of this fixed yoke 11, so that, as before, both of the tilting positions of the operating member 14 are stable.
  • the holes 47 of the housing 18 are circular, at the contour of the pivot axis 44, and the same is true for the hole 45 of the operating member 14.
  • the pivot axis 44 of the actuator 14 is on the contrary offset, laterally, relative to the median plane of the fixed yoke 11, median plane which is perpendicular to the movement plane of the conductive broom 13 and which is perpendicular to the upper face of this fixed yoke 11.
  • pivot axes 44A, 44B which are both offset laterally with respect to the median plane of the fixed yoke 11, median plane which is perpendicular to the plane of movement of the conductive brush 13 and which is perpendicular to the upper face of this fixed yoke 11, the projection of the pivot axes (44A, 44B) on the upper face of the fixed yoke falling in outside of the latter, these pivot axes 44A, 44B extending respectively on either side of the fixed yoke 11, one offset to the side of the fixed contact pad 12A, the other offset to the side of the stud fixed contact 12B.
  • the two pivot axes 44A, 44B both pass through holes 45A, 45B of the operating member 14, and without play, and, with play, holes 47A, 47B of the housing 18.
  • these holes 47A, 47B are then elongated in the buttonhole, generally parallel to said median plane.
  • these holes 47A, 47B can be slightly bent, while being centered on the axis opposite to that which passes through them.
  • the stable rest position of the operating member 14, and therefore of the conductive brush 13 is an intermediate position between their previous extreme tilting positions, and, for this intermediate position, shown in FIG. 21, which is a third position coming in addition to the previous two, the conductive brush 13 is at a distance from one and from the other of the fixed contact pads 12A, 12B.
  • both of these extreme tilting positions are unstable, and, for their maintenance, it is necessary to extend the corresponding action on the operating member 14, as shown schematically by the arrows F ⁇ A and F ⁇ B.
  • the switch according to the invention is in this case an inverter with neutral mid-point and two momentary closing positions.
  • FIG. 12 there may be, parallel to one another, two conductive brushes 13, with, for each of them, a fixed yoke 11 and one or two fixed contact pads 12A, 12B, the operating member 14 then having, in parallel to one another, for their joint actuation, two fingers 21.
  • the switch mechanism according to the invention is suitable most particularly for breaking an alternating current, for which it is more particularly intended, this breaking not necessarily requiring a rapid tilting of this conducting brush, it goes without saying that the field of application of the invention does not is however not limited to the only breaking of an alternating current but can, at least for certain applications, in particular when the current to be cut is low, extend as well to the breaking of a direct current.
EP87402409A 1986-10-29 1987-10-26 Mécanisme d'interrupteur à balai conducteur à double pivot, et interrupteur comportant un tel mécanisme, notamment pour courant alternatif Expired - Lifetime EP0268518B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87402409T ATE93992T1 (de) 1986-10-29 1987-10-26 Schaltmechanismus mit leitendem schieber mit doppeltem drehpunkt und schalter mit einem solchem mechanismus, insbesondere fuer wechselstrom.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615041 1986-10-29
FR8615041A FR2606208B1 (fr) 1986-10-29 1986-10-29 Mecanisme d'interrupteur a balai conducteur a double pivot, et interrupteur comportant un tel mecanisme, notamment pour courant alternatif

Publications (2)

Publication Number Publication Date
EP0268518A1 EP0268518A1 (fr) 1988-05-25
EP0268518B1 true EP0268518B1 (fr) 1993-09-01

Family

ID=9340315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402409A Expired - Lifetime EP0268518B1 (fr) 1986-10-29 1987-10-26 Mécanisme d'interrupteur à balai conducteur à double pivot, et interrupteur comportant un tel mécanisme, notamment pour courant alternatif

Country Status (13)

Country Link
US (1) US4843200A (pt)
EP (1) EP0268518B1 (pt)
JP (1) JPS63170821A (pt)
AT (1) ATE93992T1 (pt)
AU (1) AU605514B2 (pt)
BR (1) BR8705905A (pt)
DE (1) DE3787256T2 (pt)
ES (1) ES2042595T3 (pt)
FR (1) FR2606208B1 (pt)
MA (1) MA21089A1 (pt)
MX (1) MX162866B (pt)
NZ (1) NZ222327A (pt)
PT (1) PT86015B (pt)

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FR2666926B1 (fr) * 1990-09-13 1996-09-20 Legrand Sa Interrupteur electrique.
US5278368A (en) * 1991-06-24 1994-01-11 Matsushita Elec. Works, Ltd Electrostatic relay
US5329278A (en) * 1991-10-24 1994-07-12 Dombroski Michael L Pivoting electronic keyboard keys
IT1264354B1 (it) * 1993-02-26 1996-09-23 Cesare Gallone Dispositivo di interconnessione fra i contatti di interruttori elettrici e simili
KR100281727B1 (ko) * 1993-08-13 2001-02-15 존 씨. 메티유 멈춤부를 갖는 패들 브레이드 스위치 어샘블리
FR2711841B1 (fr) * 1993-10-29 1996-01-05 Arnould App Electr Interrupteur électrique dont le balai conducteur est à double pivot.
GB2284099A (en) * 1993-11-17 1995-05-24 Ave Spa Electric rocker switch
US5525952A (en) * 1994-06-10 1996-06-11 Therm-O-Disc, Incorporated Switchblade
FR2735609B1 (fr) * 1995-06-15 1997-08-22 Legrand Sa Mecanisme d'interrupteur
US5642806A (en) * 1996-03-07 1997-07-01 Eaton Corporation Rocker actuated switch assembly
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JP2000276975A (ja) * 1999-03-23 2000-10-06 Mikku Enterprise:Kk マイクロスイッチ
US5950812A (en) * 1999-03-26 1999-09-14 Leviton Manufacturing Co., Inc. Rocker switch using a star spring
JP4583675B2 (ja) * 2001-08-30 2010-11-17 ナイルス株式会社 スイッチ
FR2829284B1 (fr) * 2001-08-31 2004-10-01 Legrand Sa Dispositif de commande d'appareillages electriques sans chape
US6891117B1 (en) 2003-11-07 2005-05-10 Cooper Wiring Devices, Inc. Modular block switch assembly
US7538647B2 (en) * 2006-07-28 2009-05-26 Cooper Technologies Company Ground fault circuit interrupter device
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Also Published As

Publication number Publication date
NZ222327A (en) 1990-03-27
FR2606208B1 (fr) 1995-01-13
ES2042595T3 (es) 1993-12-16
US4843200A (en) 1989-06-27
JPS63170821A (ja) 1988-07-14
DE3787256D1 (de) 1993-10-07
AU8046787A (en) 1988-05-26
ATE93992T1 (de) 1993-09-15
EP0268518A1 (fr) 1988-05-25
MX162866B (es) 1991-07-02
BR8705905A (pt) 1988-05-31
DE3787256T2 (de) 1993-12-16
AU605514B2 (en) 1991-01-17
PT86015B (pt) 1993-09-30
MA21089A1 (fr) 1988-07-01
FR2606208A1 (fr) 1988-05-06
PT86015A (pt) 1988-11-30

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