EP0256901B1 - Schaltvorrichtung mit symmetrischer Perkussion unter Verwendung eines Sprungwerkes mit Überschreitung eines Totpunktes - Google Patents

Schaltvorrichtung mit symmetrischer Perkussion unter Verwendung eines Sprungwerkes mit Überschreitung eines Totpunktes Download PDF

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Publication number
EP0256901B1
EP0256901B1 EP87401599A EP87401599A EP0256901B1 EP 0256901 B1 EP0256901 B1 EP 0256901B1 EP 87401599 A EP87401599 A EP 87401599A EP 87401599 A EP87401599 A EP 87401599A EP 0256901 B1 EP0256901 B1 EP 0256901B1
Authority
EP
European Patent Office
Prior art keywords
lever
spring
contact
force
actuator
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
EP87401599A
Other languages
English (en)
French (fr)
Other versions
EP0256901A1 (de
Inventor
Bruno Jacquet
Jean-Pierre Tellier
Frédéric Noirot
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique 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
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Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Priority to AT87401599T priority Critical patent/ATE72357T1/de
Publication of EP0256901A1 publication Critical patent/EP0256901A1/de
Application granted granted Critical
Publication of EP0256901B1 publication Critical patent/EP0256901B1/de
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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements
    • 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
    • H01H2071/109—Operating or release mechanisms with provisions for selecting between automatic or manual reset
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
    • H01H5/12—Energy stored by deformation of elastic members by compression or extension of coil springs having two or more snap-action motions in succession

Definitions

  • the present invention relates to a symmetrical percussion switching device, using a device with overshoot of neutral position.
  • the invention therefore more particularly aims to eliminate these drawbacks by dissociating the actuation function provided by the device beyond dead center from the switching function and by using, for this switching function, switch devices actuated by percussion by the device when passing neutral.
  • a symmetrical percussion switching device comprising a bistable actuator with neutral shift, arranged so as to actuate two switches alternately, this actuator comprising an actuation lever mounted rotatably around a first fixed axis so as to be able to switch between two stops by actuating at the end of the outward or return stroke respectively one or the other of the switches, this actuation lever being subjected to the action of a spring of which a first end is fixed to said lever, at a location distant from said fixed axis and a portion of which located at a distance from said end is movable under the action of a control member, the second end of the spring being fixed to the control member and capable of being moved either by application of a force on this end or by displacement of said control member.
  • the conventional double change-over contact with neutral point overrun device consists of a movable contact carrier in the form of a lever 1 (or a blade) articulated, at the one of its ends, around an axis 0 and carrying, at its other end, a double contact pad 2.
  • This lever 1 can oscillate between two angular positions OX, OZ for which the double contact pad 2 comes into end-of-travel abutment on two respective fixed contact elements 3, 4.
  • lever 1 The actuation of this lever 1 is effected by means of a spring 5, one end 6 of which is connected to lever 1, and the other end of which 7 is fixed on a support at a point 8 by means of a mechanical connection 9 possibly flexible.
  • the displacement of the end 7 of the spring can therefore be ensured, either by a displacement, for example in translation of the support point 8, or by exerting on this end 7 a force F.
  • the expression of this contact force F C is therefore as follows: When under the action of a force F applied to the end 7 or of a movement bringing the support point 8 from the position shown in the location 8 ⁇ , the spring 5 is aligned with the lever 1, the angle ⁇ is zero and the contact force F C is zero.
  • the end 11 ⁇ of the lever 11 does not support a contact element but cooperates with the actuating members of two switch devices arranged on either side of this end.
  • the crossing of the neutral position by the end 13 of the spring 12 will cause, following the tilting of the lever 11, percussion of one or the other of the actuating members of the switching devices.
  • the switch devices each comprise a movable contact carrier 15, 16 consisting of a blade articulated at one of its ends 17, 18 and the other end of which is provided with an element mobile contact 19, 20 which cooperates with a fixed contact element 21, 22.
  • This end further comprises a stop surface 23, 24 which extends in the passage from the end 11 l'extrémInstitut of the lever 11 and thus serves as actuating member on which the device passing through neutral is struck to effect the separation of the movable contact element 19, 20 and the fixed contact element 21, 22.
  • each of the movable contact carriers 15, 16 is biased by a respective return spring 25, 26 tending to apply the movable contact element 19, 20 against the fixed contact element 21, 22 which corresponds to it.
  • this spring 25, 26 whose action is antagonistic to that of the spring 12 when the end 11 ⁇ of the lever 11 cooperates with the abutment surface 23, 24 of the movable contact element 15, 16 which is associated with it, serves to ensure a slight anticipation of the passage of neutral.
  • stops can act both on the lever 11, as is the case with the stops A, A ⁇ , A ⁇ , as on the movable contact carriers 15, 16. This is the reason why we have shown stops B, B ⁇ , B ⁇ corresponding to this second case.
  • Manual resetting can, for its part, be effected by a displacement of the stop A ⁇ (or B ⁇ ) until it occupies the position of the stop A ⁇ (or B ⁇ ).
  • the advantage of the device described above consists in that it eliminates the risk of having a zero contact pressure of the mobile and fixed contact elements both on tripping and on resetting. This makes it possible to have better reliability of the control of subordinate members and thereby avoid known disturbances (micro-cuts, beats) encountered with certain conventional devices with exceeding dead center.
  • this device is particularly suitable for serving as a trigger / signaling element for a thermal relay.
  • the force F C supplied in the rest position perpendicular to the end 11 ⁇ of the lever 11 has the expression: this force canceling out when the angle ⁇ is zero, that is to say when the spring 12 is in the axis of the lever 11.
  • the force F C supplied to the end 11 ⁇ of the lever 11 depends only on the force F R assumed to be constant and the angle ⁇ assumed to be small. It can therefore be assumed that the force / stroke diagram at the end 11 ⁇ of the lever 11 is linear during the tilting.
  • the force F0 provided at the contact surface 24 by the movable contact carrier 16 and its spring 26, has the expression: in which the expressions 15, 16, F2 and ⁇ are the counterparts of the expressions 13, 14, F1 and ⁇ .
  • the force / stroke diagrams of these movable contact carriers are symmetrical .
  • the force F F supplied at rest by the movable contact carrier 15 is antagonistic to that F C of the lever 11.
  • the action of the bimetallic strips on the end 13 will, by deforming the spring 12, reduce the angle ⁇ and the force F C.
  • F C becomes slightly lower than F F
  • the lever 11 can swing certainly until its second stable state. It is therefore necessary that in passing, it can provide on the abutment surface 24 a force greater than that of the resistant force provided by the spring 26 of the movable contact carrier 16 to cause the opening of the contact elements 20, 22 .
  • this passage must be able to take place technically outside kinetic energy, that is to say that statically, the motor force produced by the lever 11 and the movable contact carrier 15 is greater than the resistant force exerted by the abutment surface 24.
  • the slope of the motor force F C must be much greater than that of the resistant forces exerted by the movable contact carriers.
  • FIGS. 6 and 7 This characteristic is illustrated by the diagrams of FIGS. 6 (triggering) and 7 (rearming) on each of which is plotted on the abscissa a racing scale and on the ordinate, a force scale. These two scales are in arbitrary units. These diagrams are representative of the forces and strokes at the abutment surfaces 23 and 24. For reasons of symmetry, the total stroke has been divided into three substantially equal parts.
  • the abscissa point 1 corresponds to the attack on the abutment surface 24 of the movable contact carrier 16 by the end 11 ⁇ of the lever 11.
  • the abscissa point 2 corresponds to the closing of the switch device comprising the contacts 19 and 21.
  • the abscissa point 3 corresponds to the triggered state.
  • the sawtooth curve OABCDE represents the result (algebraic sum) of the forces involved at the abutment surfaces 23, 24.
  • the automatic reset of the device is carried out by means of a reverse process which is illustrated in FIG. 7.
  • the invention provides a solution for making a mobile contact carrier having an almost zero slope c.

Landscapes

  • Electrophonic Musical Instruments (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Thermally Actuated Switches (AREA)
  • Mechanical Control Devices (AREA)
  • Mechanical Operated Clutches (AREA)
  • Primary Cells (AREA)
  • Hybrid Cells (AREA)
  • Secondary Cells (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Toys (AREA)
  • Electronic Switches (AREA)
  • Transmitters (AREA)
  • Push-Button Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gears, Cams (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Brushes (AREA)
  • Massaging Devices (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Claims (4)

  1. Schaltvorrichtung mit symmetrischer Perkussion, die eine bistabile Betätigungsvorrichtung mit Totpunktüberschreitung aufweist, welche so angeordnet ist, dass sie abwechselnd zwei Schalter (15, 19, 21 ; 16, 20, 22) betätigt und besagte Betätigungsvorrichtung einen Betätigungshebel (11) aufweist, der drehbar um eine erste stationäre Achse (0) montiert ist, um sich so zwischen zwei Anschlägen (A, A') hin- und herzubewegen und am Ende der Hin- oder Herbewegung jeweils einen der Schalter betätigen zu können, wobei besagter Betätigungshebel der Wirkung einer Feder (12) unterworfen ist, deren erstes Ende (12') an besagtem Hebel (11) an einem von der besagten Achse (0) entfernten Punkt befestigt ist und deren vom besagten Ende (12') entfernt angeordneter Abschnitt unter der Wirkung eines Steuerorgans (14) beweglich ist und das zweite Ende der Feder (13) am Steuerorgan (14) befestigt ist, um entweder durch die Anwendung einer Kraft auf besagtes Ende oder durch Verschiebung des besagten Steuerorgans (14) verschoben werden zu können.
    dadurch gekennzeichnet, dass :
    - besagte Schalter von der normalerweise geschlossenen Art sind und jeweils ein stationäres Kontaktelement (21, 22) und ein von einem hin- und herpendelnden Hebel (15, 16) getragenes bewegliches Kontaktelement (19, 20) aufweisen, und der Hebel zwecks Schliessung von einer Feder (25, 26) beaufschlagt wird und die beiden stationären Kontaktelemente (21, 22) in einem Bereich zwischen den beiden beweglichen Kontaktelementen (19, 20) angeordnet sind ;
    - die beiden beweglichen Kontaktelemente (19, 20) dank Anschlagmitteln (23, 24) betätigt werden, gegen die der Betätigungshebel (11) zum Anschlag kommt und besagte Anschlagmittel (23, 24) jeweils auf einer der beiden Seiten des beweglichen Endes des Betätigungshebels (11) angeordnet sind und jeder Anschlag mit dem Betätigungshebel (11) über einen Teil von dessen Hubstrecke, die dem jeweiligen Hub seines beweglichen Kontakts entspricht, zusammenarbeitet und besagte Anschlagmittel (23, 24) so angeordnet sind, dass sie die Vorwegnahme des Kippens nach Überschreitung des Totpunktes ausgleichen und so wirken, dass die Öffnung eines der Kontakte vor der Schliessung des anderen erfolgt ;
    - das Gefälle der von der Betätigungsvorrichtung auf den Anschlag ausgeübten Antriebskraft das Gefälle der von den Anschlagmitteln auf die Betätigungsvorrichtung ausgeübten Widerstandskraft weit übertrifft.
  2. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, dass mindestens einer der beweglichen Kontakthalter (15, 16) so ausgelegt ist, dass er auf die Betätigungsvorrichtung (11) eine Widerstandskraft mit Nullgefälle ausübt.
  3. Vorrichtung nach Anspruch 2,
    dadurch gekennzeichnet, dass besagter beweglicher Kontakthalter ein Kontaktblatt (30) aufweist, das schwenkbar an einem seiner Enden mittels eines Gelenks (Y) montiert und zwischen zwei Winkelpositionen (YS, YS') beweglich ist, wobei besagtes Blatt (30) von einer Feder (31) beaufschlagt wird, deren fester Verbindungspunkt (32) auf einer durch das Gelenk (Y) führenden Geraden (D) und senkrecht zum Blatt (30) angeordnet ist, wenn letzteres eine mittlere Position zwischen den beiden Positionen (YS, YS') einnimmt.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass besagte Betätigungsvorrichtung eine dritte Position (A") einnehmen kann, von der aus sie nicht mehr durch einfache Verschiebung des Steuerorgans (14) in eine der beiden obengenannten Positionen zurückkehren kann.
EP87401599A 1986-08-14 1987-07-08 Schaltvorrichtung mit symmetrischer Perkussion unter Verwendung eines Sprungwerkes mit Überschreitung eines Totpunktes Expired - Lifetime EP0256901B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401599T ATE72357T1 (de) 1986-08-14 1987-07-08 Schaltvorrichtung mit symmetrischer perkussion unter verwendung eines sprungwerkes mit ueberschreitung eines totpunktes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611737A FR2602908B1 (fr) 1986-08-14 1986-08-14 Dispositif de commutation a double percussion, utilisant un dispositif a depassement de point mort
FR8611737 1986-08-14

Publications (2)

Publication Number Publication Date
EP0256901A1 EP0256901A1 (de) 1988-02-24
EP0256901B1 true EP0256901B1 (de) 1992-01-29

Family

ID=9338302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401599A Expired - Lifetime EP0256901B1 (de) 1986-08-14 1987-07-08 Schaltvorrichtung mit symmetrischer Perkussion unter Verwendung eines Sprungwerkes mit Überschreitung eines Totpunktes

Country Status (20)

Country Link
US (1) US4841106A (de)
EP (1) EP0256901B1 (de)
JP (1) JPH07101574B2 (de)
KR (1) KR900005868B1 (de)
AT (1) ATE72357T1 (de)
AU (1) AU595348B2 (de)
BE (1) BE1004511A4 (de)
BR (1) BR8703920A (de)
CA (1) CA1274563A (de)
CH (1) CH673173A5 (de)
DE (1) DE3776459D1 (de)
DK (1) DK169244B1 (de)
ES (1) ES2008175A6 (de)
FI (1) FI88085C (de)
FR (1) FR2602908B1 (de)
GB (1) GB2193842B (de)
IN (1) IN172195B (de)
IT (1) IT1222112B (de)
MY (1) MY101310A (de)
ZA (1) ZA875460B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602908B1 (fr) * 1986-08-14 1993-09-24 Telemecanique Electrique Dispositif de commutation a double percussion, utilisant un dispositif a depassement de point mort
FR2618019B1 (fr) * 1987-07-08 1989-11-17 Telemecanique Electrique Relais thermique
US6492606B1 (en) 2001-08-21 2002-12-10 Electroswitch Corporation Snap action switch
CA3053044A1 (en) 2019-08-26 2021-02-26 Alpha Technologies Ltd. Bi-stable transfer switch

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1768943A (en) * 1929-08-10 1930-07-01 Minneapolishoneywell Regulator Switch
US2752446A (en) * 1953-10-19 1956-06-26 John E Carlson Snap switch
DE1907420C3 (de) * 1969-02-14 1975-10-16 Danfoss A/S, Nordborg (Daenemark) Bimetallschalter mit Schnappsystem
DE2043740A1 (de) * 1970-08-28 1972-03-02 Siemens Ag Meß oder Regelgerat
AU3537271A (en) * 1970-12-17 1973-05-10 Westinghouse Electric Corporation Improvements in or relating to circuit interrupter
JPS499586U (de) * 1972-04-24 1974-01-26
JPS5037394A (de) * 1973-08-06 1975-04-08
JPS539886U (de) * 1976-07-09 1978-01-27
SU698064A1 (ru) * 1978-06-19 1979-11-15 Специальное Конструкторское Бюро По Приборостроению Микровыключатель
DE3070654D1 (en) 1980-11-28 1985-06-20 Square D Starkstrom Gmbh Contact device
FR2536906A1 (fr) * 1982-11-25 1984-06-01 Telemecanique Electrique Relais thermique a reenclenchement automatique ajustable
FR2602908B1 (fr) * 1986-08-14 1993-09-24 Telemecanique Electrique Dispositif de commutation a double percussion, utilisant un dispositif a depassement de point mort

Also Published As

Publication number Publication date
FI873515A0 (fi) 1987-08-13
ATE72357T1 (de) 1992-02-15
EP0256901A1 (de) 1988-02-24
FI873515L (fi) 1988-02-15
CA1274563A (fr) 1990-09-25
DK169244B1 (da) 1994-09-19
IT1222112B (it) 1990-08-31
IT8721419A0 (it) 1987-07-23
FI88085C (fi) 1993-03-25
ZA875460B (en) 1988-02-04
KR880003358A (ko) 1988-05-16
FR2602908B1 (fr) 1993-09-24
DE3776459D1 (de) 1992-03-12
AU7596387A (en) 1988-02-18
MY101310A (en) 1991-09-05
BR8703920A (pt) 1988-04-05
JPH07101574B2 (ja) 1995-11-01
US4841106A (en) 1989-06-20
ES2008175A6 (es) 1989-07-16
GB8716807D0 (en) 1987-08-19
JPS6348713A (ja) 1988-03-01
BE1004511A4 (fr) 1992-12-08
GB2193842B (en) 1990-02-14
FR2602908A1 (fr) 1988-02-19
DK426287A (da) 1988-02-15
DK426287D0 (da) 1987-08-14
IN172195B (de) 1993-05-01
AU595348B2 (en) 1990-03-29
GB2193842A (en) 1988-02-17
KR900005868B1 (ko) 1990-08-13
FI88085B (fi) 1992-12-15
CH673173A5 (de) 1990-02-15

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