EP1884970B1 - Elektrisch steuerbarer Druckknopf-Trennschalter - Google Patents

Elektrisch steuerbarer Druckknopf-Trennschalter Download PDF

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Publication number
EP1884970B1
EP1884970B1 EP07354035A EP07354035A EP1884970B1 EP 1884970 B1 EP1884970 B1 EP 1884970B1 EP 07354035 A EP07354035 A EP 07354035A EP 07354035 A EP07354035 A EP 07354035A EP 1884970 B1 EP1884970 B1 EP 1884970B1
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EP
European Patent Office
Prior art keywords
force
control
operating
speed
control switch
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Application number
EP07354035A
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English (en)
French (fr)
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EP1884970A2 (de
EP1884970A3 (de
Inventor
Olivier Schneider Electric Industries SAS Ngoagouni
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.)
Crouzet Automatismes SAS
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Crouzet Automatismes SAS
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Publication of EP1884970A2 publication Critical patent/EP1884970A2/de
Publication of EP1884970A3 publication Critical patent/EP1884970A3/de
Application granted granted Critical
Publication of EP1884970B1 publication Critical patent/EP1884970B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/20—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/02—After travel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/064—Limitation of actuating pressure

Definitions

  • the invention relates to a push-button electrical control switch comprising a housing in which at least one electrical contact is positioned having at least a first and a second electrical state and a control push-button.
  • Said pusher comprises a first control means intended to move under the action of the external control force, and a second control means moving under the action of an internal control force to place said at least one electrical contact. from a first electrical state to a second electrical state.
  • the electric push-button control switch includes decoupling means between the first control means and the at least one electrical contact.
  • existing solutions generally comprise a control button 4 that can move in translation between a control position of an electrical contact and a rest position.
  • the control pusher 4 is generally maintained in its rest position by the action of elastic means.
  • the control pusher 4 has two ends, a first end on which is exerted a control force and a second end for directly or indirectly controlling the closing or opening of the electrical contact.
  • the second end of the control pusher 4 may comprise connection means that can intervene directly in closing or opening the electrical contact. In addition, the second end can control the opening or closing of the electrical contact indirectly.
  • the second end of the control pusher 4 then actuates the command an electric cell 10 such as a microswitch or an inverter.
  • the electrical contact 3 is then inside said electrical cell.
  • control force FC on the control pushbutton 4 tends to move it from its rest position to its control position.
  • the force that the elastic means apply to the control pusher 4 tends to oppose the movement of said pusher from its rest position to its control position.
  • the elastic means preferably comprising a helical spring, are compressed when the pusher is in its control position. As soon as the action on the control pusher 4 is canceled, the control force FC also cancels and the elastic means tend to return said pusher to its rest position.
  • the push-button electric control switch as shown on the Figures 1 to 3 then comprises two springs connected in series. According to an embodiment, the two springs have different stiffnesses.
  • the operation of this type of control switch is as follows. When a non-excessive FC control force is applied to the control pusher 4, as shown in FIG. figure 2 only the first spring with the lowest stiffness compresses under the action of the control force FC. The second spring having a greater stiffness is not compressed. The operation of the electric push button control switch is then identical to the mode described above.
  • control pusher 4 When an excessive control force is applied to the control pusher 4, said pusher moves from its rest position to its control position by compressing the first spring in the same manner as when a non-excessive control force is applied. and the electrical contact then changes state. As shown on the figure 3 since the control force is excessive, the second spring compresses in turn and stores the surplus energy instead of the electrical contact.
  • the arrangement of the two springs as well as the kinematics of the mechanism may be somewhat different as represented on the Figures 4 to 6 .
  • the control pusher 4 comprises two pistons 5, 6 which can move relative to each other in the control direction. Each movable piston is subjected to the efforts of independent elastic means. The operating principle remains close to that described above.
  • the movement of the first piston 5 under the action of a control force FC compresses the return spring.
  • the second piston 6 also moves towards the electrical contact, driven by the movement of the first piston via the second spring.
  • the electrical contact is integrated in an electric cell 10.
  • the second spring then begins to compress.
  • the second piston 6 remains fixed in abutment on the electric cell 10 while the first piston 5 can continue its course.
  • the forces applied on said cell are limited to those of the compression force of the second spring on the second piston 6. These compression forces are generally lower than those which could be exerted directly by the control force FC. Indeed, according to this embodiment, the stiffness of the second compression spring is chosen so as to limit the compression forces on the electric cell 10.
  • the switching speed of the electrical contact is independent of the movement speed of said pusher.
  • the electrical state change rate of the electrical contact is directly dependent on the speed of movement of the lever arm which interacts directly with the switch.
  • the movement of the lever is controlled by the action of the compression force of the first spring then compressed. Maximum effort is exerted by this first spring. Said effort, which is generally important, can lead to a very rapid rotation of the lever and cause a change of state too abrupt electric risk of damaging the electrical contact.
  • the rate of change of electrical state of the electrical contact being greater than that recommended for such an electric cell, there is a rapid deterioration of said cell.
  • the invention therefore aims to overcome the disadvantages of the state of the art, so as to provide a push button electric control switch of simplified construction and can withstand significant forces and control speeds.
  • the electric push-button control switch according to the invention is defined in claim 1.
  • the decoupling means comprise at least one elastic control means providing the internal control force setting a first predetermined maximum speed of displacement.
  • a retractable stop releases the movement of the second control means under the action of the internal control force when the first control means moves under the action of the external control force.
  • the decoupling means comprise an internal elastic control means generating a holding force setting the second predetermined maximum speed.
  • the holding force opposes the internal control force and is of lower intensity.
  • At least one elastic return means applies a return force to the control pusher, the return force being intended to oppose the control force.
  • the return force opposes the internal control force and is of higher intensity.
  • the second control means moves in translation in a direction parallel to that of the displacement of the first control means.
  • the first control means comprises an external piston and the second control means comprises an internal piston, said inner and outer pistons having coaxial longitudinal axes.
  • the electrical control switch 1 comprises a housing 2 containing at least one electrical contact 3.
  • the electrical control switch 1 comprises a control pushbutton 4 intended to be operated to change the electrical state of said at least one electrical contact 3 .
  • the electrical control switch 1 comprises an electrical contact 3 having at least a first and a second electrical states.
  • the electrical contact 3 is preferably integrated in an electrical cell 10 such as a microswitch.
  • the electric cell 10 may comprise a control pusher 11 whose displacement, between two extreme positions, causes a change of electrical state of the electrical contact 3.
  • the electrical contact 3 has two electrical states.
  • the electrical control switch When the electrical control switch is in a state of rest, the first electrical terminal A is connected to a third electrical terminal C.
  • the electrical control switch When the electrical control switch is in a detection state, the first electrical terminal A is connected to a second electrical terminal B.
  • the electrical contact 3 is maintained in the first electrical state called rest by a holding force fm generated by an elastic control means 9.
  • the control pusher 4 can move under the action of an external control force FC between the rest position and the detection position.
  • the rest and detection positions are respectively represented on the Figures 7 and 9 . Said rest and detection positions are also represented on the Figures 12A-B and 13A-B .
  • Said control pushbutton 4 comprises a first control means 5 on which is intended to apply the external control force FC.
  • the first control means 5 preferably comprises an outer piston moving in translation along its longitudinal axis 100 within the housing 2.
  • the displacement stroke of the outer piston is limited by two positioning stops 21, 22.
  • the positioning stops 21, 22 are an integral part of the casing 2.
  • the outer piston comprises a cylindrical body having two ends.
  • a first end has a first bearing surface 50 to which the external control force FC applies.
  • a second end of the outer piston has a shoulder 51.
  • An outer face 52 of the shoulder 51 of the outer piston comes into contact with the first stop 21 when the electrical control switch 1 is in a rest position.
  • a second stop 22 blocks the displacement of the outer piston via the inner face 53 of the shoulder 51 when the electric control switch 1 is in its detection position.
  • said elastic means applies a return force FR on the outer piston.
  • the return force FR is intended to oppose the external control force FC.
  • the return force FR is preferably applied to the second end of the cylindrical body of the outer piston.
  • said at least one elastic return means 7 comprises a helical spring positioned between the bottom of the housing and the inner face 53 of the shoulder 51 of the outer piston.
  • the electrical control switch 1 comprises decoupling means 6, 8, 9 between the first control means 5 and the electrical contact 3.
  • the decoupling means 6, 8, 9 comprise means for moving the electrical contact 3 of the first electrical state in the second electrical state and vice versa, at a speed whose maximum value is predetermined.
  • the speed of displacement of the electrical contact 3 is independent of the speed of the first control means 5 when the speed of the first control means 5 is greater than said predetermined maximum value.
  • the decoupling means 6, 8, 9 allow a change of electrical state of each electrical contact 3, at a speed independent of the speed of the first control means 5 of the control pusher 4.
  • the control pushbutton 4 comprises a second control means 6, the displacement of which causes the electrical state of the electrical contact 3 to change.
  • the second control means 6 comprises an internal piston.
  • Said internal piston has a longitudinal axis 100 coaxial with that of the outer piston of the first control means 5.
  • Said second control means 6, moves in translation in a direction parallel to that of the displacement of the push button 4.
  • the inner piston comprises a cylindrical body having two ends.
  • the outer surface of the cylindrical body has at least one flange 60. Said flange is preferably placed at a first end of said body.
  • the inner piston has a bearing surface 61 for actuating the electrical contact in the detection position. This bearing surface is preferably at a second end of the piston.
  • the inner piston is preferably hollow to be slidably mounted around the cylindrical body of the outer piston.
  • the internal piston actuates the control pusher 11 of the microswitch of the electric cell 10.
  • the decoupling means 6, 8, 9 comprise at least one elastic control means 8 generating an internal control force fc.
  • This internal control force fc sets a first predetermined maximum speed V1max of displacement of the electrical contact 3 from the first electrical state to the second electrical state.
  • This internal control force fc is applied to the second control means 6 to drive it in motion.
  • the internal control force fc is independent of the external control force FC.
  • the internal control force fc is directly proportional to the stiffness of the elastic control means 8.
  • control speed of the second control means 6 in other words the speed of movement of the internal piston, will essentially depend on the internal control force fc.
  • the movement speed of the second control means 6 is independent of the movement speed of the first control means 5 when the speed of the first control means 5 is greater than the first predetermined maximum value V1 max.
  • said at least one elastic control means 8 comprises a helical spring positioned between an inner surface of the housing and the first end of the cylindrical body of the inner piston.
  • the springs of the elastic control means 8 and return 7 are coaxial.
  • the mobile retractable stop 23 is an integral part of the outer piston.
  • the flange 60 of the inner piston is intended to abut against the outer face 52 of the shoulder 51 of the outer piston.
  • the return force FR applied to the external piston is opposite to the internal control force fc. Said return force then indirectly opposes the displacement of the internal piston.
  • the return force FR is of greater intensity than the internal control force fc.
  • the displacement of the internal piston can begin only after the erasure of the mobile retractable stop 23. In other words, the internal piston can not move when the external piston is positioned against the first stop 21, ie both that the control pusher 4 has not begun its movement.
  • the displacement of the first control means 5 under the action of force of external control FC releases the displacement of the second control means 6 under the action of internal control force fc.
  • the decoupling means 6, 8, 9 comprise an internal elastic control means 9 generating a holding force fm on the electrical contact or contacts 3. This holding force fm sets a second predetermined maximum speed V2max of displacement of the electrical contact or contacts 3 from the second electrical state to the first electrical state.
  • the displacement speed of the electrical contact 3 of the second electrical state to the first electrical state is independent of the movement speed of the second control means 6 when the speed of the second control means 6 is greater than the second predetermined maximum value V2max.
  • the holding force fm opposes the internal control force fc and is of lower intensity.
  • the operation of the electrical control switch 1 is as follows.
  • the first control means 5 tends to move along its longitudinal axis 100.
  • the electrical control switch 1 leaves its idle state.
  • Two modes of operation are observable as a function of the speed of movement of the first control means 5.
  • the first control means 5 can reach the second stop 22 before the internal piston has caused the change of electrical state of the electrical contact 3. The first control means 5 can then be positioned on the second stop 22 before that the electric control switch 1 is in its detection state.
  • the control speed of the second control means 6 depends only on the internal control force fc; in other words, the speed of displacement of the electrical contact (s) 3 from the first electrical state to the second electrical state is totally independent of the speed of displacement of the first control means 5.
  • the impact force of the internal piston on the one or more electrical contacts 3 is then also completely independent of the external control force FC. In all cases, the maximum speed of the internal piston is imposed by the internal control force fc.
  • the decoupling between the first control means 5 and the electrical contact or contacts essentially concerns the speed of displacement of the external piston and the rate of change of electrical state of the electrical contact 3. Moreover, the decoupling also concerns the intensity of the external control force FC applied to the control pushbutton 4 and the internal control force fc tending to change the electrical state of the electrical contact 3.
  • the electrical control switch When the external control force FC is canceled, the electrical control switch will leave its detection state and return to a state of rest. The first control means 5 then tends to move in the opposite direction under the action of the return force FR.
  • the return force FR is applied to the inner face 53 of the shoulder 51 of the outer piston of the first control means 5.
  • the outer piston During its displacement, the outer piston will translate in translation the inner piston which has made contact with the movable retractable stop 23 of the outer piston. Since the return force FR is greater than the internal control force fc, the displacement of the first control means 5 causes that of the second control means 6.
  • the internal piston then releases the pressure exerted on the electrical contact 3 of the electric cell 10.
  • Said electrical contact resumes a rest position under the action of the holding force fm of the internal elastic control means 9.
  • Said holding force fm sets the second predetermined maximum speed V2max of displacement of the electrical contact 3 of the second electrical state in the first electrical state.
  • the speed of displacement of the electrical contact 3 of the second electrical state to the first electrical state is independent of the speed of displacement of the second control means 6 when the speed of the internal piston of the second control means 6 is greater than the second predetermined maximum value V2max .
  • the rate of change of electrical state of the electrical contact 3 is then fixed by the internal elastic control means 9.
  • the electric cell which had three contacts A, B, C can be replaced by an electrical cell with two contacts A, B.
  • the first electrical terminal A is disconnected from the second electrical terminal B when the switch is in a state of rest
  • the first electrical terminal A is connected to the second electrical terminal B when the electrical control switch is in a detection state.
  • the electric push-button control switch comprises several electric cells.
  • the electric push button switch can be bipolar, three-pole or four-pole.

Landscapes

  • Push-Button Switches (AREA)

Claims (9)

  1. Elektrischer Betätigungsschalter mit Drucktaster (1) und einem Gehäuse (2), in dem
    • mindestens ein elektrischer Kontakt (3) mit mindestens einem ersten und einem zweiten Schaltzustand,
    • eine Betätigungsvorrichtung (4) mit
    • einem ersten Betätigungsmittel (5), das dazu dient, unter Einwirkung der externen Betätigungskraft (FC) verschoben zu werden,
    • einem zweiten Betätigungsmittel (6), das unter Einwirkung einer internen Betätigungskraft (fc) verschoben wird, um den genannten mindestens einen elektrischen Kontakt (3) von einem ersten Schaltzustand in einen zweiten Schaltzustand zu überführen, sowie
    • Entkopplungsmittel (6, 8, 9) zwischen dem ersten Betätigungsmittel (5) und dem genannten mindestens einen elektrischen Kontakt (3) angeordnet sind, welche Entkopplungsmittel (6, 8, 9) Mittel umfassen, um den genannten mindestens einen elektrischen Kontakt (3) mit einer, einen festgelegten Maximalwert aufweisenden Geschwindigkeit vom ersten Schaltzustand in den zweiten Schaltzustand bzw. umgekehrt zu überführen,
    - wobei die Geschwindigkeit der Überführung des elektrischen Kontakts bzw. der elektrischen Kontakte (3) vom ersten in den zweiten Schaltzustand unabhängig von der Geschwindigkeit des ersten Betätigungsmittels (5) ist, wenn die Geschwindigkeit des genannten ersten Mittels höher ist als eine erste, festgelegte Maximalgeschwindigkeit (V1 max) und
    - die Geschwindigkeit der Überführung des elektrischen Kontakts bzw. der elektrischen Kontakte (3) vom zweiten in den ersten Schaltzustand unabhängig von der Geschwindigkeit des ersten Betätigungsmittels (5) ist, wenn die Geschwindigkeit des genannten ersten Mittels höher ist als eine zweite, festgelegte Maximalgeschwindigkeit (V2max),
    welcher Betätigungsschalter dadurch gekennzeichnet ist, dass die Betätigungsvorrichtung (4) als Drucktaster ausgebildet ist, der das erste und das zweite Betätigungsmittel umfasst.
  2. Betätigungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Entkopplungsmittel (6, 8, 9) mindestens ein Betätigungs-Federmittel (8) zur Lieferung der internen Betätigungskraft (fc) umfassen, welche Kraft die erste festgelegte Maximalgeschwindigkeit (V1 max) bestimmt.
  3. Betätigungsschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass er einen versenkbaren Anschlag umfasst (23), der eine Verschiebung des zweiten Betätigungsmittels (6) unter Einwirkung der internen Betätigungskraft (fc) freigibt, wenn sich das erste Betätigungsmittel (5) unter Einwirkung der externen Betätigungskraft (FC) verschiebt.
  4. Betätigungsschalter nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Entkopplungsmittel (6, 8, 9) mindestens ein internes Betätigungs-Federmittel (9) zur Erzeugung einer Haltekraft (fm) umfassen, welche Kraft die zweite festgelegte Maximalgeschwindigkeit (V2max) bestimmt.
  5. Betätigungsschalter nach Anspruch 5, dadurch gekennzeichnet, dass die Haltekraft (fm) gegen die interne Betätigungskraft (fc) gerichtet und kleiner als diese ist.
  6. Betätigungsschalter nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er mindestens ein Rückstell-Federmittel (7) umfasst, das den Drucktaster (4) mit einer Rückstellkraft (FR) beaufschlagt, welche Rückstellkraft (FR) dazu dient, der Betätigungskraft (FC) entgegenzuwirken.
  7. Betätigungsschalter nach Anspruch 7, dadurch gekennzeichnet, dass die Rückstellkraft (FR) gegen die interne Betätigungskraft (fc) gerichtet und größer als diese ist.
  8. Betätigungsschalter nach irgendeinem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass sich das zweite Betätigungsmittel (6) in einer parallel zur Verschieberichtung des ersten Betätigungsmittels (5) verlaufenden Richtung geradlinig verschiebt.
  9. Betätigungsschalter nach Anspruch 9, dadurch gekennzeichnet, dass das erste Betätigungsmittel (5) einen Außenkolben und das zweite Betätigungsmittel (6) einen Innenkolben umfasst, wobei der genannte Innenkolben und der genannte Außenkolben koaxial zueinander verlaufende Längsachsen (100) aufweisen.
EP07354035A 2006-08-01 2007-06-12 Elektrisch steuerbarer Druckknopf-Trennschalter Active EP1884970B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0607036A FR2904725B1 (fr) 2006-08-01 2006-08-01 Interrupteur de commande electrique a bouton poussoir

Publications (3)

Publication Number Publication Date
EP1884970A2 EP1884970A2 (de) 2008-02-06
EP1884970A3 EP1884970A3 (de) 2009-06-17
EP1884970B1 true EP1884970B1 (de) 2013-02-20

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ID=37685231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07354035A Active EP1884970B1 (de) 2006-08-01 2007-06-12 Elektrisch steuerbarer Druckknopf-Trennschalter

Country Status (4)

Country Link
US (1) US20080029376A1 (de)
EP (1) EP1884970B1 (de)
ES (1) ES2421065T3 (de)
FR (1) FR2904725B1 (de)

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Publication number Priority date Publication date Assignee Title
FR2947646A1 (fr) * 2009-07-01 2011-01-07 Neo Factory Dispositif pour la pratique de jeux sur ecran tactile
JP2011243476A (ja) * 2010-05-20 2011-12-01 Panasonic Corp プッシュスイッチ
DE102011103124A1 (de) * 2011-05-25 2012-11-29 Audi Ag Elektrische Eingabetaste
CN103106913A (zh) * 2011-11-14 2013-05-15 鸿富锦精密工业（深圳）有限公司 电子装置
US9053877B2 (en) * 2012-02-03 2015-06-09 Delta Systems, Inc. Plunger switch and method of using same
US9679712B2 (en) * 2012-10-16 2017-06-13 Delta Systems, Inc. Switch assembly and method of using same
US10383631B2 (en) 2016-08-04 2019-08-20 Covidien Lp Variable speed control of powered surgical device
JP6838484B2 (ja) 2017-04-28 2021-03-03 オムロン株式会社 スイッチ
JP7271287B2 (ja) * 2019-04-19 2023-05-11 Idec株式会社 スイッチ装置
DE102020116718A1 (de) * 2020-06-25 2021-12-30 Eaton Intelligent Power Limited Befehls- und Meldegerät

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Publication number Priority date Publication date Assignee Title
US3100824A (en) * 1960-05-31 1963-08-13 Cutler Hammer Inc Limit switch
JPS6244423Y2 (de) * 1979-03-06 1987-11-24
US5066841A (en) * 1989-07-12 1991-11-19 Itt Corporation Dual plunger switch
JP3037051B2 (ja) * 1994-01-21 2000-04-24 矢崎総業株式会社 押ボタンスイッチ
FR2793346B1 (fr) * 1999-05-07 2001-07-13 Crouzet Automatismes Dispositif etanche de detection de position a ouverture brusque
KR20040043896A (ko) * 2002-11-20 2004-05-27 삼성전자주식회사 푸시버튼
DE10331130A1 (de) * 2003-07-09 2005-02-03 Demag Cranes & Components Gmbh Schalter für die Handbetätigung von Hebezeugen

Also Published As

Publication number Publication date
US20080029376A1 (en) 2008-02-07
EP1884970A2 (de) 2008-02-06
FR2904725A1 (fr) 2008-02-08
EP1884970A3 (de) 2009-06-17
ES2421065T3 (es) 2013-08-28
FR2904725B1 (fr) 2015-05-22

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