EP1401004A2 - Disjoncteur électrique - Google Patents

Disjoncteur électrique Download PDF

Info

Publication number
EP1401004A2
EP1401004A2 EP03019319A EP03019319A EP1401004A2 EP 1401004 A2 EP1401004 A2 EP 1401004A2 EP 03019319 A EP03019319 A EP 03019319A EP 03019319 A EP03019319 A EP 03019319A EP 1401004 A2 EP1401004 A2 EP 1401004A2
Authority
EP
European Patent Office
Prior art keywords
lever
rotary handle
switching device
leg
cam
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.)
Withdrawn
Application number
EP03019319A
Other languages
German (de)
English (en)
Other versions
EP1401004A3 (fr
Inventor
Corell Dipl.-Ing. Göbel
Guido Dipl.-Ing. Niewöhner
Ralf Dipl.-Ing. Müller
Georgi Dipl.-Ing. Cwetanski
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.)
ABB AG Germany
Original Assignee
ABB Patent GmbH
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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP1401004A2 publication Critical patent/EP1401004A2/fr
Publication of EP1401004A3 publication Critical patent/EP1401004A3/fr
Withdrawn legal-status Critical Current

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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
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
    • 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
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker

Definitions

  • the invention relates to an electrical switching device according to the preamble of the claim 1.
  • the invention relates in particular to a circuit breaker and in particular on a motor protection switch.
  • Such switching devices must perform a disconnector function when switched off means: the distance of a movable contact piece from the fixed contact piece must be of a certain size and furthermore it is necessary that the switch-off position is also indicated optically.
  • the contact point may weld so that the switchgear does not switch to the off position when triggered or switched off arrives.
  • the control unit i.e. the control handle, must not be in the off position arrive and thus incorrectly indicate a contact opening to the operator.
  • By actuating the control unit in the direction of the off position it must be possible to lightly contact weld or contact glue on to be able to break.
  • the object of the invention is to provide a switching device of the type mentioned in the introduction, in which the number of parts is minimized and assembly is considerably simplified.
  • the particular advantage of the invention is that only two parts, namely the intermediate lever and the spring, are required to move the target To prevent the actuating element from switching off in the case of contact welding, to reach.
  • the switching mechanism 10 shown in the figures is part of a motor protection switch; the switchgear and other built-in parts such as arc quenching chambers, Electromagnetic and thermal triggers and housing parts are not shown since they are not important for the invention.
  • the switching device has an actuating element 11, designed as a rotary handle Transmission lever 12 for transmitting the movement of the rotary handle 11 to a Double contact point 13 for switching on and off.
  • the double contact point 13 has a contact bridge 14 with two movable contact pieces 15 and 16, which is mounted on a support pin 17, which is not shown in more detail here is shown coupled to the transmission lever 12 (see Fig. 3), wherein the transmission lever 12 as an L-shaped lever with a first leg 18 and a second leg 19 is formed, both molded onto an axis of rotation 20 are so that when pivoting the transmission lever 12 about the axis of rotation 20 counterclockwise, the contact bridge 14 in the switch-off position shown in Fig. 1 arrives.
  • the movable contact pieces 15 and 16 are fixed contact pieces 21 and 22 assigned, which are each attached to arc guide rails 23 and 24.
  • At the Arc guide rail 23 is formed on a U-shaped component 25 on which a connecting conductor can be connected.
  • FIG. 2 shows the switching device or the switching mechanism 10 in the switched-on position, in the the contact pieces 15, 21; 16, 22 are closed.
  • the transmission lever 12 pivoted clockwise so that the contact bridge 14 in the switched-on position arrives (see Fig. 3).
  • the free end of the leg 18 has a projection 26 which is connected to the leg 28 forms an L-shape, the protrusion 26 being formed with a cam 27 which is below an angle greater than 90 ° in the direction of the free end of the leg 18 is bent.
  • an L-shaped one Intermediate lever 28 is provided on an axis 29, which is at the free end a first leg 30 is located, is rotatably mounted.
  • This leg 30 runs approximately parallel to the contact bridge; the other leg 31 runs perpendicular to the connecting line of the two contact points 15, 21; 16, 22 and engages in the on position 2 into the interior of the twist grip 11 in the range of motion of a Stop 32.
  • the leg 30 has on the outer edge facing the transmission lever 12 is a trough-like recess 33 with a ramp surface 34 with which the cam 27th works together.
  • the cam 27 is free in the recess 33 from the cam surface 33a formed in and by the recess 33.
  • the pivots Transmission lever 12 clockwise and thereby the cam 27 can on the ramp surface 34 run up, so that the intermediate lever 28 clockwise around its axis 29 is pivoted so that the free end of the leg 31, as shown in Fig. 2, moves inside the twist grip 11.
  • the intermediate lever pivots 28 against the force of a compression spring 35, which on the one hand is not closer to one housing part shown and on the other hand on a molded on the intermediate lever 28 Plateau 36 abuts, the plateau 36 being approximately aligned with the leg 30.
  • FIG. 3 shows the arrangement according to FIGS. 1 and 2 in a side view.
  • the Contact bridge is received in the plunger 17 and the leg 19 presses a switch-off action against a bearing surface 37 on the plunger 17, so that the contact bridge 14 reaches the open position, as shown in FIG. 1.
  • FIG 3 shows the switch-on position, in which the cam 29 extends over the run-up surface 34 a holding surface 38 has shifted.
  • the leg 31 is located inside the twist grip, in which position it is a certain distance from the Stops surface 32.
  • That the stop surface 32 facing free end of the leg 31 has for improvement power transmission a nose 39.

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP03019319A 2002-09-20 2003-08-27 Disjoncteur électrique Withdrawn EP1401004A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20214579U 2002-09-20
DE20214579U DE20214579U1 (de) 2002-09-20 2002-09-20 Elektrisches Schaltgerät

Publications (2)

Publication Number Publication Date
EP1401004A2 true EP1401004A2 (fr) 2004-03-24
EP1401004A3 EP1401004A3 (fr) 2005-12-21

Family

ID=7975289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03019319A Withdrawn EP1401004A3 (fr) 2002-09-20 2003-08-27 Disjoncteur électrique

Country Status (2)

Country Link
EP (1) EP1401004A3 (fr)
DE (1) DE20214579U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3002772A1 (fr) * 2014-10-01 2016-04-06 Siemens Aktiengesellschaft Appareil de commutation doté d'un dispositif de blocage pour un affichage fiable de position

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10306319B3 (de) * 2003-02-14 2004-11-04 Siemens Ag Elektromechanischer Leistungsschalter
EP2003667B1 (fr) * 2007-06-14 2013-03-27 Eaton Industries (Netherlands) B.V. Commutateur électronique doté d'une indication d'état positif

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020063049A1 (en) 2000-10-30 2002-05-30 Yoshinobu Hamada Circuit breaker

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020063049A1 (en) 2000-10-30 2002-05-30 Yoshinobu Hamada Circuit breaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3002772A1 (fr) * 2014-10-01 2016-04-06 Siemens Aktiengesellschaft Appareil de commutation doté d'un dispositif de blocage pour un affichage fiable de position
CN105489451A (zh) * 2014-10-01 2016-04-13 西门子公司 具有用于可靠地显示开关位置的闭锁装置的开关设备
CN105489451B (zh) * 2014-10-01 2018-05-11 西门子公司 具有用于显示开关位置的闭锁装置的开关设备

Also Published As

Publication number Publication date
DE20214579U1 (de) 2003-03-06
EP1401004A3 (fr) 2005-12-21

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