EP3293746B1 - Verrou de commutation pour un commutateur électrique et commutateur électrique comprenant un tel verrou de commutation - Google Patents

Verrou de commutation pour un commutateur électrique et commutateur électrique comprenant un tel verrou de commutation Download PDF

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Publication number
EP3293746B1
EP3293746B1 EP17179689.9A EP17179689A EP3293746B1 EP 3293746 B1 EP3293746 B1 EP 3293746B1 EP 17179689 A EP17179689 A EP 17179689A EP 3293746 B1 EP3293746 B1 EP 3293746B1
Authority
EP
European Patent Office
Prior art keywords
switch
spring
breaker
energy
shaft
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
EP17179689.9A
Other languages
German (de)
English (en)
Other versions
EP3293746A1 (fr
Inventor
Thomas Bunk
Siegfried Pirker
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3293746A1 publication Critical patent/EP3293746A1/fr
Application granted granted Critical
Publication of EP3293746B1 publication Critical patent/EP3293746B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • 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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3031—Means for locking the spring in a charged state
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • 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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
    • 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
    • H01H5/045—Energy stored by deformation of elastic members making use of cooperating spring loaded wedging or camming parts between operating member and contact structure
    • 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
    • H01H5/14—Energy stored by deformation of elastic members by twisting of torsion members
    • H01H5/16—Energy stored by deformation of elastic members by twisting of torsion members with auxiliary means for temporarily holding parts until torsion member is sufficiently strained
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring

Definitions

  • the invention relates to a switch lock for an electrical switch and an electrical switch with such a switch lock.
  • the maximum stored energy is used in this invention to operate the switch mechanism.
  • a switch lock for a circuit breaker with a switching gate, two toggle levers which are connected via a toggle lever axis, a helical lock spring and a release lever for controlling the tipping point and thus controlling the release of the switching shaft.
  • the ZA 9 901 853 B discloses a circuit breaker with separable fixed and movable contact, one movable Contact carrier assembly comprising a movable contact arm to which the movable contact is attached adjacent a first end, and means for pivotably supporting the movable contact arm adjacent a second end. Further disclosed is an actuation mechanism which is operatively connected to the movable contact carrier assembly to move the movable contact carrier assembly between a closed position in which the separable contacts are closed to conduct current and an open position in which the separable contacts are open. to interrupt electricity, to turn.
  • An operating handle is provided for operating the operating mechanism and for setting the movable contact carrier assembly in the closed position and the open position.
  • a releasable retainer is used to hold the movable contact arm when the movable contact carrier assembly is in the open position and to release the movable contact arm when the operating handle reaches the closed position.
  • a circuit breaker with a crank for connecting a switching mechanism to the contact pole structure is presented.
  • the crank has a pair of cam surfaces that cooperate with a locking lever to limit movement of the operating handle when the circuit breaker contacts are welded.
  • the locking lever is arranged so that it does not interfere with the handle under normal operating conditions.
  • the invention is therefore based on the object of providing a switch lock for an electrical switch which uses as much stored energy as possible to actuate the switch shaft.
  • the switch lock for an electrical switch comprises a spring, a latching mechanism and an actuating element with which a switching shaft of the electrical switch is actuated to open (OFF position) or close (ON position) the electric current, wherein when closing the electric current, the actuating element is actuated in the direction of the ON position and thereby the spring is tensioned and when the ON position is reached, the latching mechanism releases the energy of the spring to actuate the switching shaft of the electrical switch.
  • the advantage here is that the maximum energy content of the spring is used.
  • the latching deflects the spring to the maximum and transfers the maximum energy to the selector shaft.
  • the energy of the spring is already released at approx. 70%. It is not only the energy of the spring that is used advantageously, but also the larger lever arm from the sliding axis to the spring axis, whereby a significantly higher torque is applied to the selector shaft. It is also advantageous that there are no friction-related fluctuations at the switchover point of the mechanism.
  • the switching point is also independent of the operating speed of the operating element. Due to the locking mechanism, the release is not determined by an equilibrium of forces that is impaired by external influences. It is also advantageous that the switch lock can be implemented in a small installation space.
  • the actuating element is designed as a rocker arm or as a rotary lever.
  • the latching mechanism is activated by touching the actuating element.
  • the electrical switch according to claim 4 which comprises a switch lock according to the invention and a switch shaft, the switch shaft being actuatable by the energy of the spring.
  • the latching mechanism releases the energy of the spring to actuate the switching shaft of the electrical switch and the switching shaft brings at least one moving contact into mechanical contact with a fixed contact.
  • the electrical switch is designed as a power switch.
  • the electrical switch 500 comprises a switching shaft 510 which is connected to electrical contacts.
  • these can be moving contacts 521, 521 ⁇ and fixed contacts 522, 522 ⁇ .
  • the electrical contacts 521, 521 '; 522, 522 ' open or close the electrical switch 500.
  • the switch lock 100 further comprises an actuating element 130.
  • This can be a rocker arm 130, for example. It is also conceivable that the actuating element 130 is designed as a rotary lever.
  • the switch lock 100 further comprises a spring 110 and a latching mechanism 120.
  • the sequence of how the actuating element 130 actuates the switching shaft 510 of the electrical switch 500 to open (OFF position) or close (ON position) the electrical current is described below further set out.
  • the spring 110 When the electrical current is closed, ie when the actuating element 130 is actuated in the direction of the ON position, the spring 110 is tensioned.
  • the spring 110 serves as an energy store and, due to the latching mechanism 120, cannot yet transfer this energy to the switching shaft 510 of the electrical switch 500. Only when the ON position is reached does the latching mechanism 120 release the energy of the spring 110 to actuate the switching shaft 510 of the electrical switch 500.
  • FIG. 1 the switching point U of the switch lock 100 according to the invention is shown.
  • the semicircular path from the OFF position to the ON position is shown for a rocker arm 130.
  • the rocker arm 130 is moved in the direction of the ON position and thereby tensions the spring 110.
  • the energy for actuating the switching shaft 510 is released.
  • FIG 1 a typical switchover point U SdT , as is known from the prior art, is shown.
  • this switchover point is 70% of the travel of the rocker arm 130 between the OFF position and the ON position. Because the switchover point from the prior art U SdT is 70%, no further energy is built up in the spring 110 of the electrical switch 500 as a result of the movement further in the direction of the ON position. It is therefore advantageous in the case of the switch lock 100 according to the invention that the switchover point U is arranged directly at the ON position and the entire path of the rocker arm 130 is used to tension the spring 110.
  • the switchover that is to say the release of the energy of the spring 110 for actuating the switching shaft 510 of the electrical switch 500, is activated by the contact of the actuating element 130 or the rocker arm 130 with the latching mechanism 120. Because the rocker arm 130 comes into mechanical contact with the latching mechanism 120, the latching mechanism 120 is activated and the switching shaft 510 is thus actuated.
  • the switch lock 100 makes use of the maximum energy content of the spring 110.
  • the spring 110 is deflected to the maximum by the latching mechanism 120 and the maximum energy is transmitted to the switching shaft 510 of the electrical switch 500. With conventional toggle switch locks, this is already released at around 70%.
  • the release of the energy of the spring 110 is determined by the latching mechanism 120 and not via an equilibrium of forces which is subject to external influences and is impaired by them.
  • the switch lock 100 according to the invention does not have any friction-related or speed-related fluctuations at the switchover point.
  • the energy of the spring 110 is used to the maximum, it can be designed to be smaller and thus more economical and mechanically more stable.
  • the defined amount of energy which does not experience any fluctuations due to external influences, enables closer coordination between the key switch and the shift shaft.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Push-Button Switches (AREA)
  • Breakers (AREA)

Claims (6)

  1. Serrure de commutation (100) destinée à un interrupteur électrique (500), ladite serrure (100) comportant un ressort (110), un mécanisme d'enclenchement (120) et un élément d'actionnement (130) pour actionner un arbre de commutation (510) de l'interrupteur électrique (500) pour ouvrir (position ARRET) ou fermer (position MARCHE) le courant électrique,
    dans laquelle, lors de la fermeture du courant électrique, l'élément d'actionnement (130) est actionné en direction de la position MARCHE, sollicitant ainsi le ressort (110), et lors de l'obtention de la position MARCHE, le mécanisme d'enclenchement (120) libère l'énergie du ressort (110) pour actionner l'arbre de commutation (510) de l'interrupteur électrique (500), caractérisé en ce que, à partir de la position ARRET, par actionnement de l'élément d'actionnement (130) en direction de la position MARCHE, de l'énergie est accumulée dans le ressort (110).
  2. Serrure de commutation (100) selon la revendication 1, dans laquelle l'élément d'actionnement (130) est conçu sous forme de levier basculant ou levier rotatif.
  3. Serrure de commutation (110) selon la revendication 1 ou 2, dans laquelle le mécanisme d'enclenchement (120) est activé par contact avec l'élément d'actionnement (130).
  4. Interrupteur électrique (500) comportant une serrure de commutation (100) selon l'une des revendications précédentes et un arbre de commutation (510), dans lequel l'arbre de commutation (510) est actionnable par l'énergie du ressort (110).
  5. Interrupteur électrique (500) selon la revendication 4, dans lequel, lorsque la position MARCHE est atteinte, le mécanisme d'enclenchement (120) libère l'énergie du ressort (110) pour l'actionnement de l'arbre de commutation (510) de l'interrupteur électrique (500) et l'arbre de commutation (510) met en contact mécanique au moins un contact mobile (521; 521') avec un contact fixe (522; 522').
  6. Interrupteur électrique (500) selon la revendication 4 ou 5, dans lequel l'interrupteur électrique (500) est conçu sous forme d'interrupteur d'alimentation.
EP17179689.9A 2016-09-08 2017-07-05 Verrou de commutation pour un commutateur électrique et commutateur électrique comprenant un tel verrou de commutation Active EP3293746B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016217106.2A DE102016217106A1 (de) 2016-09-08 2016-09-08 Schaltschloss für einen elektrischen Schalter und elektrischer Schalter mit solch einem Schaltschloss

Publications (2)

Publication Number Publication Date
EP3293746A1 EP3293746A1 (fr) 2018-03-14
EP3293746B1 true EP3293746B1 (fr) 2021-08-25

Family

ID=59294972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17179689.9A Active EP3293746B1 (fr) 2016-09-08 2017-07-05 Verrou de commutation pour un commutateur électrique et commutateur électrique comprenant un tel verrou de commutation

Country Status (5)

Country Link
US (1) US10580608B2 (fr)
EP (1) EP3293746B1 (fr)
CN (1) CN107808785B (fr)
DE (1) DE102016217106A1 (fr)
MX (1) MX2017011457A (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736174A (en) 1987-04-23 1988-04-05 General Electric Company Molded case circuit breaker operating mechanism
FR2683089B1 (fr) 1991-10-29 1993-12-31 Merlin Gerin Mecanisme de manóoeuvre pour disjoncteur tetrapolaire.
DE4227213C2 (de) 1992-08-17 1995-08-31 Kloeckner Moeller Gmbh Schaltschloß für einen Leistungsschalter
US5918732A (en) 1994-11-29 1999-07-06 Klockner-Moeller Gmbh Power circuit breaker with a breaker mechanism and a breaker mechanism for a power circuit breaker with a lock for a low-voltage switch
DE4442417C1 (de) * 1994-11-29 1996-02-15 Kloeckner Moeller Gmbh Schaltschloß für ein Niederspannungs-Schaltgerät
US5931289A (en) * 1998-03-10 1999-08-03 Eaton Corporation Circuit breaker with quick closing mechanism
US6166344A (en) * 1999-03-23 2000-12-26 General Electric Company Circuit breaker handle block
DE10133878B4 (de) * 2001-07-12 2004-07-08 Siemens Ag Schaltgerät mit einem Schaltschloss
JP4059058B2 (ja) * 2002-10-28 2008-03-12 富士電機機器制御株式会社 回路しゃ断器
KR101015316B1 (ko) * 2008-12-31 2011-02-15 엘에스산전 주식회사 접점 상태를 표시할 수 있는 배선용 차단기의 개폐기구 및 그를 갖는 배선용 차단기

Also Published As

Publication number Publication date
CN107808785A (zh) 2018-03-16
CN107808785B (zh) 2019-09-13
US20180068819A1 (en) 2018-03-08
MX2017011457A (es) 2018-09-21
DE102016217106A1 (de) 2018-03-08
EP3293746A1 (fr) 2018-03-14
US10580608B2 (en) 2020-03-03

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