EP3293751A1 - Mécanisme de commande d'un appareil de commutation basse tension - Google Patents

Mécanisme de commande d'un appareil de commutation basse tension Download PDF

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Publication number
EP3293751A1
EP3293751A1 EP17181325.6A EP17181325A EP3293751A1 EP 3293751 A1 EP3293751 A1 EP 3293751A1 EP 17181325 A EP17181325 A EP 17181325A EP 3293751 A1 EP3293751 A1 EP 3293751A1
Authority
EP
European Patent Office
Prior art keywords
switch lock
switching
lock according
locking part
roller
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.)
Granted
Application number
EP17181325.6A
Other languages
German (de)
English (en)
Other versions
EP3293751B1 (fr
Inventor
Matthias Eisner
Rainer Kreutzer
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 EP3293751A1 publication Critical patent/EP3293751A1/fr
Application granted granted Critical
Publication of EP3293751B1 publication Critical patent/EP3293751B1/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
    • H01H71/1009—Interconnected mechanisms
    • 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
    • H01H71/528—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a toggle or collapsible link between handle and contact arm, e.g. sear pin mechanism
    • 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
    • H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • 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
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel

Definitions

  • the invention relates to a switching mechanism for a low-voltage protection device with two opposing circuit boards, wherein between the circuit boards, a rotatable handle is arranged, which is operatively connected via a bracket with a roller.
  • Low-voltage protection devices serve, among other things, the safe shutdown in the event of a short circuit and thus protect consumer installations.
  • electrical or mechanical switching units are suitable for the operational manual switching of consumers as well as for the safe disconnection of a system from the mains during maintenance work or when changing the system. Electrical switching units are often operated electromagnetically.
  • switching units are high-quality electrical switching devices with integrated protection for motors, lines, transformers and generators. They are used more closely at workstations with a lower switching frequency. Such switching units are suitable in addition to the short circuit protection for overload protection.
  • Circuit breakers have two separate release mechanisms for overload and short-circuit protection. Both triggers are connected in series.
  • the short-circuit protection is provided by an electrical release that works almost instantaneously. In the event of a short circuit, the electromagnetic release unlocks without delay a circuit breaker of the circuit breaker. A switching armature disconnects the contactor before the short-circuit current can reach its maximum value.
  • Known switching units have a contact slide unit with a contact slide and a movable contact piece.
  • the movable contact piece also has electrical contacts.
  • switching units have first contacts to a power line. In an on state, the electrical contacts of the movable contact piece contact the fixed contacts of the switching unit. In the event of a short circuit, the electrical contacts of the movable contact piece are released from the fixed contacts, so that the flow of current is interrupted. In this case, the movable contact piece is released from the contacts.
  • circuit breakers In addition to their protective functions as overload and short-circuit releases, as already mentioned above, circuit breakers also fulfill the normative switching on and off of motors. To prove these functions, the circuit-breakers must be able to switch on ten times the rated motor current according to the product standard. To ensure this limit load, it is necessary that the circuit breaker closes the double interruption of the three current paths in the form of a movable bridge with two movable contact points and two fixed contact points, almost simultaneously and in a jump function.
  • the object of the present invention is to provide a switch lock for a low-voltage protection device with a retrofittable device for sudden switching.
  • this object is achieved by a switching mechanism for a low-voltage protection device with two opposing circuit boards, wherein between the circuit boards, a rotatable handle is arranged, which is operatively connected via a bracket with a roller.
  • the invention is characterized by the fact that the role is in operative connection with a retrofittable means for pivotal switching, via which a shift lever is to be moved to a corresponding switching position.
  • the essence of the invention is that only a single switching mechanism subassembly is required by the retrofittable device for sudden switching, which can be manufactured and tested completely automated.
  • the inventive retrofittable device for sudden switching has a locking part and a return spring, which can be retrofitted to adapt the switch lock for larger rated currents. In this case, first the locking part in the bearing pin, on which also the shift lever is arranged, snapped. Subsequently, the return spring is snapped with the locking part.
  • the return spring is designed so that it can be easily and safely mounted.
  • the blocking part is still within the keyhole geometry and requires no additional space inside the complete unit.
  • This subsequent assembly of the locking part reduces the variance of the preassembled switch lock assembly. It can be used again on a preassembled standard switch lock, which is then configured depending on the use of differently strong, external tension springs and a retrofittable locking part.
  • a continuation of the inventive concept can provide that the means for sudden switching has a blocking part.
  • a special embodiment of the inventive concept may consist in that the locking part can be snapped onto a bearing, on which also the shift lever is positioned.
  • An advantageous embodiment of the inventive concept may consist in that the locking part is Z-shaped with two mutually parallel tongues and a tongue region connecting the central region.
  • a continuation of this concept according to the invention may consist in that at the connecting central region a semi-concentric extension is formed, over which the locking part snaps onto the bearing, so that the shift lever and the locking part are mounted in the same bearing point.
  • a continuation of the inventive concept can provide that the tongue of the locking member is in operative connection with the roller.
  • a special embodiment of this concept according to the invention can provide that the means for sudden switching has a return spring.
  • An advantageous embodiment of the inventive concept may consist in that the restoring spring has J-shaped sections, which are connected to one another via a connection region.
  • a continuation of the inventive concept may provide that the J-shaped portions of the return spring are secured to the tongue of the locking member and to the circuit board.
  • the switching mechanism according to the invention for a low-voltage protection device has two opposing circuit boards, wherein between the circuit boards, a rotatable handle is arranged, which is operatively connected via a bracket with a roller.
  • the role is in operative connection with a retrofittable means for pivotal switching, via which a shift lever is to be moved to a corresponding switching position.
  • the device for sudden switching has a blocking part and a return spring.
  • the blocking part is Z-shaped with two mutually parallel tongues and a tongue connecting the central region.
  • a semi-concentric extension is formed over which the locking member snaps onto a bearing, wherein the shift lever and the locking member are mounted in the same bearing point.
  • the tongue of the locking member is operatively connected to the roller.
  • the assembly provides that first the locking part is snapped onto the bearing and then snapped the return spring with the locking part.
  • Fig. 1 a switching lock from the prior art.
  • the switching mechanism has two opposing circuit boards 1, 2, wherein between the circuit boards 1, 2, a rotatably mounted handle 3 is arranged.
  • the handle 3 is connected via a transmission mechanism with a arranged on a bearing 4 shift lever 5 in operative connection.
  • the Fig. 1 shows a switch lock without quick turn-on.
  • FIG. 2 an inventive switch lock is shown with a separately shown retrofittable device for sudden switching in the form of a locking member 6 and a return spring 7.
  • the switch lock according to the invention also has two opposing circuit boards 1, 2, wherein between the circuit boards 1, 2 arranged a rotatable handle 3 is that is connected via a transmission mechanism with a bearing 4 arranged on the shift lever 5 in operative connection.
  • the locking member 6 is Z-shaped with two mutually parallel tongues 8, 9 and the tongues 8, 9 connecting central region 10.
  • a semi-concentric extension 11 is integrally formed, over which the locking member 6 snaps onto the bearing 4 , so that the shift lever 5 and the locking member 6 are mounted in the same bearing point.
  • the return spring 7 has two J-shaped sections 12, 13, which are connected to each other via a connecting portion 14.
  • Fig. 3 the switching mechanism according to the invention is shown with mounted, retrofittable device for sudden switching.
  • Out Fig. 3 shows that on the tongue 9 of the locking member 6, a J-shaped portion 12 of the return spring 7 is attached. The other J-shaped portion 13 of the return spring 7 is attached to the circuit board 2 of the switching mechanism.
  • Fig. 4 the switching mechanism according to the invention with the transmission mechanism of bracket 15 and roller 16 is shown in the off switching position state.
  • the roller 16 When switched off switching position, the roller 16 is spaced from the tongue 8 of the locking member 6.
  • the semi-concentric extension 11 are mounted on the locking part 6 together with the shift lever 5 in a bearing 4.
  • Fig. 5 shows the switching mechanism according to the invention with the transmission mechanism of bracket 15 and roller 16 at the beginning of the deflection of the locking member 6.
  • the roller 16 moves through the deflection on the tongue 8 of the locking member 6 until the roller 16 and the tongue 8 of the locking member 6 a have common touch point.
  • the shift lever 5 which is positioned with the locking part 6 on the bearing 4.
  • Fig. 6 the switching mechanism according to the invention with the transmission mechanism of bracket 15 and roller 16 is shown in the switched position switching state.
  • the switching mechanism according to the invention for low-voltage protection devices with a retrofittable device for sudden switching is characterized in that by the subsequent Assembly of the locking member or the return spring, the variance of the preassembled switch lock assembly is reduced. It can be used again on a pre-assembled standard switch lock, which is then configured depending on the use of the differently strong tension springs and a retrofit locking part. This reduces the storage and handling effort. The need for quick-release switching locks can be controlled as needed and without much effort. The hitherto complicated manual assembly of the preassembled switch lock assembly is eliminated and is replaced by the simple subsequent assembly of the finished assembly. It should be added that the locking part is still within the keyhole geometry and requires no additional space inside the complete unit.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP17181325.6A 2016-09-09 2017-07-14 Mécanisme de commande d'un appareil de commutation basse tension Active EP3293751B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016217225.5A DE102016217225A1 (de) 2016-09-09 2016-09-09 Schaltschloss für ein Niederspannungsschutzgerät

Publications (2)

Publication Number Publication Date
EP3293751A1 true EP3293751A1 (fr) 2018-03-14
EP3293751B1 EP3293751B1 (fr) 2019-12-18

Family

ID=59350741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17181325.6A Active EP3293751B1 (fr) 2016-09-09 2017-07-14 Mécanisme de commande d'un appareil de commutation basse tension

Country Status (3)

Country Link
EP (1) EP3293751B1 (fr)
CN (1) CN107808802B (fr)
DE (1) DE102016217225A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3933880A1 (fr) * 2020-06-29 2022-01-05 Rockwell Automation Switzerland GmbH Dispositif de commutation doté d'un mécanisme de saut

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508110A1 (de) * 1985-03-07 1986-09-11 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Schaltschloss mit schnelleinschaltung
DE19703959C1 (de) * 1997-02-03 1998-04-23 Siemens Ag Schaltgerät mit Tripped-Stellung des Schaltschlosses
DE19703977C1 (de) * 1997-02-03 1998-05-14 Siemens Ag Schaltgerät mit Schnelleinschaltung
EP3002773A1 (fr) * 2014-10-01 2016-04-06 Siemens Aktiengesellschaft Appareil de commutation équipé d'un dispositif d'arrêt indépendant de l'opérateur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112016002051B1 (pt) * 2013-09-25 2021-08-17 Siemens Aktiengesellschaft Dispositivo de comutação

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508110A1 (de) * 1985-03-07 1986-09-11 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Schaltschloss mit schnelleinschaltung
DE19703959C1 (de) * 1997-02-03 1998-04-23 Siemens Ag Schaltgerät mit Tripped-Stellung des Schaltschlosses
DE19703977C1 (de) * 1997-02-03 1998-05-14 Siemens Ag Schaltgerät mit Schnelleinschaltung
EP3002773A1 (fr) * 2014-10-01 2016-04-06 Siemens Aktiengesellschaft Appareil de commutation équipé d'un dispositif d'arrêt indépendant de l'opérateur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3933880A1 (fr) * 2020-06-29 2022-01-05 Rockwell Automation Switzerland GmbH Dispositif de commutation doté d'un mécanisme de saut

Also Published As

Publication number Publication date
CN107808802A (zh) 2018-03-16
CN107808802B (zh) 2019-11-12
DE102016217225A1 (de) 2018-03-15
EP3293751B1 (fr) 2019-12-18

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