EP3128531B1 - Dispositif d'actionnement d'une poignée et commutateur electrique - Google Patents

Dispositif d'actionnement d'une poignée et commutateur electrique Download PDF

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Publication number
EP3128531B1
EP3128531B1 EP16170282.4A EP16170282A EP3128531B1 EP 3128531 B1 EP3128531 B1 EP 3128531B1 EP 16170282 A EP16170282 A EP 16170282A EP 3128531 B1 EP3128531 B1 EP 3128531B1
Authority
EP
European Patent Office
Prior art keywords
bridge
arm
spring
electrical switch
handle
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.)
Active
Application number
EP16170282.4A
Other languages
German (de)
English (en)
Other versions
EP3128531A1 (fr
Inventor
Pavel Danielis
Zdenek Honza
Tomas Horak
Johannes Welzl
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.)
Siemens AG
Original Assignee
Siemens AG
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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Publication of EP3128531A1 publication Critical patent/EP3128531A1/fr
Application granted granted Critical
Publication of EP3128531B1 publication Critical patent/EP3128531B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/66—Power reset mechanisms
    • H01H71/70—Power reset mechanisms actuated by electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/36—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms

Definitions

  • the invention relates to a device for actuating a handle of an electrical switch with electrical contacts and to an electrical switch with such a device.
  • Electrical switches in particular electrical circuit breakers, are typically connected by a handle.
  • the handle has at least one "OFF" and one "ON” position.
  • the handle is operated by a surgeon.
  • motor drives are used, which can be placed on the electrical switch and operate the handle.
  • motor drives which are mounted on the front side directly above the handle or which are mounted on the side of the electrical switch and actuate the handle with one arm.
  • the electrical contacts of a switch are opened or closed. Due to an overcurrent situation, the electrical contacts of a switch may be fused, so that the switch can not be brought into the "OFF" position. With a motor drive, in such a situation there is a risk that the command will cause the electric switch to be turned “off” to damage the mechanism of the motor drive or the electric switch.
  • CN 104 021 998 A discloses a manual and electrical integrated operating mechanism of a circuit breaker having a socket, a motor, a gear mechanism, a connecting and disconnecting mechanism and an actuating mechanism, the connecting and disconnecting mechanism having a connecting and disconnecting part and a return part.
  • the connecting and disconnecting part has a connection position connecting the motor to the transmission mechanism, and a disconnecting position separating the motor from the transmission mechanism.
  • the publication US 4,990,873 A discloses a power drive mechanism for a circuit breaker handle having a reversible electric motor, a carriage assembly and a cooperating sliding plate assembly mechanically coupled to the motor shaft.
  • the carriage assembly includes a pivotally mounted L-shaped lever which is latched to the circuit breaker actuating handle to actuate the actuating handle to an on position or alternatively to an off position on command.
  • Microswitches are located both in the on position and the off position to control the operation of the motor.
  • the microswitches are actuated by the slide plate assembly, which in turn is driven by the carriage assembly.
  • the slide plate assembly is slidably mounted with one or more wave washers relative to the carriage assembly.
  • the sliding plate assembly provides mechanical damping for the carriage assembly to minimize damage to the microswitches.
  • the slide plate assembly also prevents the contacts from projecting in the limit switch, although the slide assembly may oscillate at the end of the travel.
  • the device includes a body having a receiving area for receiving and engaging a portion of the circuit breaker handle.
  • the body is fixedly secured to a shaft for movement between a first position and a second position.
  • the body is moved by the forces of a first coil and a second coil.
  • the first coil generates a first force in a first direction
  • the second coil generates a second force in a second direction, the second direction being opposite to the first direction.
  • the first and second forces are transmitted to the shaft to effect movement between the first and second positions
  • the publication US 2008/099318 A1 discloses an apparatus for providing accelerated linear motion of a circuit breaker actuation handle during ON or OFF operation of the circuit breaker.
  • the accelerated linear movement on the operating handle is applied at a certain point during its movement, so that the movable contacts of the circuit breaker are not delayed in their opening or closing due to a slow movement of the circuit breaker operating handle.
  • the invention is therefore based on the object to provide an alternative device that allows a particularly safe handling by an operator of an electrical switch with fused contacts.
  • This object is achieved by a device for actuating a handle of an electrical switch with electrical contacts according to claim 1.
  • Advantageous embodiments of the device according to the invention are specified in subclaims.
  • the object is also achieved by an electrical switch according to claim 7.
  • the inventive device for actuating a handle of an electrical switch with electrical contacts comprises an arm for actuating the Handha be of the electrical switch, which is in operative connection with a mechanical bridge that can perform a linear movement along a fixed axis, wherein the bridge is formed in two parts with a first part and a second part and these two parts are movable along the fixed axis, the first part of the bridge is in operative connection with the arm and the second part is held by a spring on the first part, and wherein the second part of the bridge is driven by a mechanism along the fixed axis.
  • An advantage of the device according to the invention is that in a blockage of the arm for actuating the handle - for example by fused contacts - is prevented due to the spring-closed connection between the first part and the second part of the bridge that this arm is damaged.
  • the spring is formed with a spring constant, which allows a greater force of the counterforce of the electric switch when switching but does not exceed the maximum permissible switching force.
  • the spring is designed as a compression spring and energy is stored in the compressed compression spring when the counterforce of the electrical switch when switching through the arm driven by the bridge is exceeded.
  • the spring may be formed as a tension spring and energy is stored in the stretched tension spring when the counterforce of the electric switch when switching through the arm driven by the bridge is exceeded.
  • the energy stored in the spring moves the arms in a second direction opposite to the first direction.
  • the movement of the arm in the first direction moves the handle of the electric switch in the direction of the "OFF” position and the movement of the arm in the second direction, the handle of the electrical switch in the direction of the "ON" position.
  • the mechanism comprises a driven wheel with a pin, wherein the pin with a highlight on the second part of the bridge cooperates to drive the bridge.
  • the object of the invention is also achieved by an electrical switch with a handle for switching the electric current and a device according to the invention, wherein the arm of the device surrounds the handle so that the movement of the arm in the first direction, the handle in the direction of "OFF" Position of the electric switch moves and the movement of the arm in the second direction moves the handle in the direction of the "ON" position.
  • FIG. 1 a device 100 for actuating a handle 910 of an electrical switch 900 with electrical contacts 920, 921 is shown.
  • the device 100 comprises an arm 130 for actuating the handle 910 of the electrical switch 900.
  • FIG. 6 shown in more detail, which is a switch 900 with electrical contacts 920, 921 and a handle 910.
  • the electrical switch 900 can be brought into the "ON" position or "OFF" position.
  • the handle 910 will be in the "ON" position and would be translated to the left to the "OFF” position.
  • the handle 910 is actuated by the device 100 in that the arm 130 encloses the handle 910 and the arm 130 makes a movement to the right or left.
  • the arm 130 has an opening 131 into which the handle 910 protrudes.
  • the arm 130 is corresponding to the FIG. 6 in operative connection with a mechanical bridge 200 capable of linear motion along a fixed axis 500.
  • the bridge 200 is formed in two parts with a first part 210 and a second part 220.
  • the first part 210 and the second part 220 are thus also movable along the fixed axis 500.
  • the first part 210 of the bridge 200 is in operative connection with the arm 130 FIG. 1 the arm 130 is mechanically rigidly attached to the first part 201 of the bridge 200.
  • the first part 210 is connected to the second part 220 of the bridge 200 such that a spring 600 holds the second part 220 on the first part 210.
  • the spring 600 according to the FIG. 1 is a compression spring, the second part 210 according to the figure 1 pulls to the right and thus causes the first part 210 and the second part 220 together.
  • the apparatus 100 includes a mechanism that drives the second portion 220 of the bridge 200 along the fixed axis 500.
  • this mechanism includes a driven wheel 800 with a pin 810, the pin 810 cooperating with a projection 221 on the second part 220 of the bridge 200 to drive the bridge 200.
  • the emphasis 221 protrudes according to the FIG. 1 at the lower part of the second part 220 of the bridge 200 out, so that upon rotation of the driven wheel 800 of the pin 810 according to the FIG. 1 the bridge 200 can slide in a first direction 510.
  • the spring constant of the spring 600 is designed such that a force greater than the counterforce of the electrical switch 900 is applied when switching by the spring 600. This means that, for example, not fused contacts 920, 921 in the normal and error-free switching operation, the spring constant is selected so that the first part 210 and the second part 220 of the bridge 200 are held together by the spring 600. At higher forces than the counter-force of the electric switch 900 during switching, such as occur in fused electrical contacts 920, 921, the spring constant is designed so that the maximum permissible switching force is not exceeded. That is, when fused contacts 920, 921, the first part 210 separates from the second part 220 of the bridge 200th
  • FIG. 2 shows that the first part 210 from the second part 220 of the bridge 200 are separated.
  • fused contacts 920, 921 cause the handle 910 can not be completely transferred to the "OFF" position due to the fused contacts 920, 921.
  • the second part 210 is further away from the first part 210 of the bridge 200 than in the illustration of FIG. 2 , Additional energy was stored in the spring 600, which was further compressed as a compression spring.
  • FIG. 4A also shows the bridge 200 with first part 210 and second part 220, which are separated due to the blocking of the contacts 920, 921, for example, because of merging.
  • FIG. 4B 11 shows a view of the arm 130, which can actuate a handle 910 of an electrical switch 900, and also the bridge 200 with a separate first part 210 and a second part 220.
  • FIG. 5 As shown, the energy stored in the compression spring 600 has been released and the bridge 200 has been slid in the second direction 520 opposite the first direction 510 along the fixed axis 500.
  • the pin 810 no longer cooperates with the highlighting 221 on the second part 220 of the bridge 200, since the pin 810 due to its circular movement of the driven wheel 800 has moved away from the bridge 200 so far that no interaction is possible.
  • the energy in the compressed compression spring 600 was so great that the arm 130 returned the handle 910 to its original position. Typically, this is the "on” position, indicating to a surgeon that the device 100 could not translate the electrical switch 900 to the "off” position.
  • the position of the handle 910 is in accordance with the status of the contacts 920, 921, which can not be separated due to fusion. An operator knows that thus the electrical switch 900 has a malfunction and can fix this targeted.
  • the device 100 may also have a tension spring instead of a compression spring, in which case the energy of the driven arm 130 is stored in the extension of the tension spring.
  • the device 100 for actuating a handle 910 of an electrical switch 900 prevents excessive forces from being exerted on the handle 910 by the motor drive, so that the switching mechanism of the electrical switch 900 would be damaged.
  • the device 100 ensures that the position of the handle 910 corresponds to the actual physical status of the contacts 920, 921.
  • device 100 prevents fused contacts 920, 921 from damaging the motor drive.
  • the arm 130 which at a side mounting of the device 100 on the switch 510 have a certain length, thus also has a certain leverage, so that it can be deformed or break.
  • the condition according to the FIG. 5 clearly signals to a surgeon that there is a fault in the electrical switch 900.
  • this error can be queried by a microswitch, so that it is displayed in a remote control that the electrical switch 900 has a malfunction.

Landscapes

  • Surgical Instruments (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (6)

  1. Dispositif (100) pour actionner une poignée (910) d'un commutateur électrique (900) comportant des contacts électriques (920, 921),
    le dispositif (100) comprenant un bras (130) d'actionnement de la poignée (910) du commutateur électrique (900) qui est en liaison active avec un pont mécanique (200) qui peut exécuter un mouvement linéaire le long d'un axe fixe (500) ;
    le pont (200) étant réalisé en deux parties avec une première partie (210) et une deuxième partie (220) et ces deux parties (210, 220) étant mobiles le long de l'axe fixe (500), la première partie (210) du pont (200) étant en liaison active avec le bras (130) et la deuxième partie (220) étant maintenue sur la première partie (210) par un ressort (600) et
    la deuxième partie (22) du pont (200) étant entraînée par un mécanisme le long de l'axe fixe (500),
    dans lequel, en cas de dépassement de la force antagoniste du commutateur électrique (900) lors de la commutation par le bras (130) entraîné par le pont (200), la première partie (210) est séparée de la deuxième partie (220) à l'encontre de la force élastique et le bras (130) ne se déplace pas plus avant dans une première direction (510) ;
    dans lequel le mécanisme comprend une roue entraînée (800) avec un ergot (810), l'ergot (810) coopérant avec une saillie (221) sur la deuxième partie (220) du pont (200) pour entraîner le pont (200),
    caractérisé en ce que
    l'énergie accumulée dans le ressort (600) est libérée lorsque la première partie (210) se sépare de la deuxième partie (220) et le pont (200) est déplacé dans la deuxième direction (520) opposée à la première direction (510) le long de l'axe fixe (500) par cessation de la coopération entre l'ergot (810) et la saillie (221) sur la deuxième partie (220) du pont (200), étant donné que l'ergot (810), en raison de son mouvement circulaire avec la roue entraînée (800), s'est éloigné spatialement du pont (200) au point qu'une coopération n'est plus possible.
  2. Dispositif (100) selon la revendication 1, dans lequel le ressort (600) est réalisé avec une constante d'élasticité qui permet d'appliquer une force supérieure à la force antagoniste du commutateur électrique (900) lors de la commutation, mais qui ne dépasse pas la force de commutation maximale autorisée.
  3. Dispositif (100) selon la revendication 1, dans lequel le ressort (600) est réalisé en tant que ressort de compression et, en cas de dépassement de la force antagoniste du commutateur électrique (900) lors de la commutation par le bras (130) entraîné par le pont (200), de l'énergie s'accumule dans le ressort de compression comprimé.
  4. Dispositif (100) selon la revendication 1, dans lequel le ressort (600) est réalisé en tant que ressort de traction et, en cas de dépassement de la force antagoniste du commutateur électrique (900) lors de la commutation par le bras (130) entraîné par le pont (200), de l'énergie s'accumule dans le ressort de traction tendu.
  5. Dispositif (100) selon la revendication 3 ou 4, dans lequel l'énergie accumulée dans le ressort (600) déplace le bras (130) dans une deuxième direction (520) opposée à la première direction (510).
  6. Commutateur électrique (900) avec une poignée (910) pour la commutation du commutateur électrique (900) et avec un dispositif (100) selon l'une des revendications précédentes, le bras (130) du dispositif (100) entourant la poignée (910) de manière telle que le mouvement du bras (130) dans la première direction (510) déplace la poignée (910) en direction de la position « ARRÊT » du commutateur électrique (900) et que le mouvement du bras (130) dans la deuxième direction (520) déplace la poignée (910) en direction de la position « MARCHE ».
EP16170282.4A 2015-08-04 2016-05-19 Dispositif d'actionnement d'une poignée et commutateur electrique Active EP3128531B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015214827.0A DE102015214827A1 (de) 2015-08-04 2015-08-04 Vorrichtung zur Betätigung einer Handhabe und elektrischer Schalter

Publications (2)

Publication Number Publication Date
EP3128531A1 EP3128531A1 (fr) 2017-02-08
EP3128531B1 true EP3128531B1 (fr) 2018-11-07

Family

ID=56026690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16170282.4A Active EP3128531B1 (fr) 2015-08-04 2016-05-19 Dispositif d'actionnement d'une poignée et commutateur electrique

Country Status (3)

Country Link
EP (1) EP3128531B1 (fr)
CN (1) CN106449195B (fr)
DE (1) DE102015214827A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3731250B8 (fr) 2019-04-23 2022-02-09 Hitachi Energy Switzerland AG Unité de ressort et commutateur de déviateur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412335U (fr) * 1987-07-13 1989-01-23
US4990873A (en) * 1989-06-30 1991-02-05 Westinghouse Electric Corp. Reverse switching means for motor operator
US5808532A (en) * 1996-01-24 1998-09-15 Circuit Protection & Controls, Inc. Motorized module for field assembly to circuit breakers
US6326870B1 (en) * 1999-08-26 2001-12-04 General Electric Company Remote operating apparatus and method for a circuit breaker handle
US7498535B2 (en) * 2006-10-30 2009-03-03 Square D Company Circuit breaker operator
WO2010136446A1 (fr) * 2009-05-25 2010-12-02 Abb Schweiz Ag Unité de commutation d'un disjoncteur à levier basculant
CN104021998B (zh) * 2014-06-23 2016-03-23 佳一电气有限公司 断路器手电动一体操作机构

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102015214827A1 (de) 2017-02-09
EP3128531A1 (fr) 2017-02-08
CN106449195B (zh) 2020-01-10
CN106449195A (zh) 2017-02-22

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