EP0515731A2 - Appareillage interrupteur électromagnétique, en particulier contacteur - Google Patents

Appareillage interrupteur électromagnétique, en particulier contacteur Download PDF

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Publication number
EP0515731A2
EP0515731A2 EP91121316A EP91121316A EP0515731A2 EP 0515731 A2 EP0515731 A2 EP 0515731A2 EP 91121316 A EP91121316 A EP 91121316A EP 91121316 A EP91121316 A EP 91121316A EP 0515731 A2 EP0515731 A2 EP 0515731A2
Authority
EP
European Patent Office
Prior art keywords
housing
bolt
contact carrier
fastening element
extinguishing chamber
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Withdrawn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
EP91121316A
Other languages
German (de)
English (en)
Other versions
EP0515731A3 (en
Inventor
Daniel Zumkeller
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh 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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Publication of EP0515731A2 publication Critical patent/EP0515731A2/fr
Publication of EP0515731A3 publication Critical patent/EP0515731A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes
    • 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
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts

Definitions

  • the present invention relates to an electromagnetic switching device, in particular a contactor with a switching magnet accommodated in a housing, with fixed contact pieces fastened in the housing and with these which can be brought into and out of engagement with the armature of the switching magnet, attached to a contact carrier guided in the housing, in an am Extinguishing chamber attached to movable housing and movable contact pieces and with a locking device which holds the contact carrier when the extinguishing chamber is removed by means of a locking device in the housing which can be released by means of a fastening element of the extinguishing chamber.
  • an arcing chamber is attached to the housing of the switching device with a fastening element.
  • this fastening element releases a bolt which releases a contact carrier of the switching device which is guided in the housing when the arcing chamber is in operation.
  • the fastening element is loosened and, at the same time, the bolt is pushed through the fastening element between the housing and the contact carrier which is displaceably guided therein. After removing the arcing chamber, the switching device can no longer be actuated because the latch holds the contact carrier in the housing.
  • This lock is used to ensure the safety of people in the vicinity of the switching device without an extinguishing chamber and the affected part of the system.
  • the bolt lies loosely in a recess in the housing and can shift due to vibrations and impacts, in particular when the fastening element and the extinguishing chamber are removed. An unintentional release of the lock is possible, which can endanger people.
  • the bolt lying loosely in the housing can also get stuck in intermediate positions despite the insertion of the fastening element loosening it and at least prevent the movements of the contact carrier, but this can result in malfunctions.
  • the object of the present invention is to provide an electromagnetic switching device of the type mentioned in the introduction, in which the contact carrier with the housing removed even with vibrations and when the arcing chamber is removed Shocks remain securely locked and in which the bolt can always be completely and safely released without intermediate positions using the fastening element of the extinguishing chamber.
  • the latch which is accommodated in the housing, locks the contact carrier under the action of a spring and can be held in the unlocked position against the spring force by means of the fastening element of the operationally installed arcing chamber.
  • the spring causes the bolt to securely lock the contact carrier in the housing when the fastener is removed, even in the event of shocks and impacts. Intermediate positions can be practically excluded because the bolt must be held securely in the released position by the fastening element, otherwise it locks the contact carrier on the spring.
  • the bolt is advantageously rotatably mounted in the housing.
  • a pivoted bolt is suitable for secure locking and can be easily designed and operated.
  • the latch guided in the housing can reach behind a part of the contact carrier and hold it in the locked position.
  • the bolt advantageously engages in a window-shaped opening simply attached to the contact carrier.
  • the bolt can be provided on its side facing the fastening element with a slot, in which laterally projecting parts of the fastening element engage when the extinguishing chamber is attached.
  • the radially projecting part of the fastening element can engage behind a housing part like a bayonet lock in the unlocked position of the bolt and thus hold the arcing chamber on the housing.
  • This bayonet-type design of the fastener is simple.
  • the housing 1 of the contactor is composed of a lower part and an upper part attached to it.
  • fixed visible contact pieces 2 are attached in Fig.2.
  • Movable contact pieces 4 which can be brought into and out of engagement with the fixed contact pieces 2, are attached to a contact carrier 3 which is displaceably guided in the housing 1.
  • the contact carrier 3 extends to the lower half of the housing 1, where a switching magnet with a stationary core 6 carrying an excitation winding 5 and an armature 7 is accommodated.
  • the armature 7 is slidably guided in the contact carrier 3 with a bolt B in a slot 9, as can be seen in FIG.
  • two springs 10 are inserted, which push the armature 7 away from the contact carrier 3 in the stroke direction of the armature 7.
  • a translation lever 11 is provided between the armature 7 and the contact carrier 3.
  • the translation lever 11 rests with its one end 12 on the housing 1 and with its other end 13 on the contact carrier 3. Both on the housing 1 and on the contact carrier 3, support surfaces are formed for the ends 12, 13 of the transmission lever 11, on which the ends 12, 13 of the transmission lever 11 can pivot and shift.
  • the transmission lever 11 is rotatably supported with its central region on a bolt 14 attached to the armature 7. When the switching magnet is tightened, the armature 7, via the bolt 14, takes with it the central region of the transmission lever 11, which has one end 12 fixed on the housing 1. The other end 13 of the translation lever 11 presses the contact carrier 3 with the movable contact pieces 4 in the on position.
  • the spring 10 lying between the armature 7 and the contact carrier 3 and also the return spring 15 of the contact carrier 3 are pressed together. After the supply voltage to the excitation winding 5 of the switching magnet has been interrupted, the contact carrier 3 and the movable contact pieces 4 attached to it are brought unhindered into the switched-off position by the return spring 15.
  • the movable contact pieces 4 are displaceable in an arcing chamber 16 through the contact carrier 3.
  • the quenching chamber 16 there are quenching plates 17 and arcing baffles 18 designed for quenching the switching arc.
  • the quenching chamber 16 is removably attached to the housing 1 by means of two fastening elements 19 arranged opposite one another on the quenching chamber 16.
  • the fastener 19 is shown in Figure 4. It consists of a round pin with two radially projecting parts 20. At the upper end of the fastening element 19, a head 21 is provided with a slot provided for a screwdriver. A spring 22 is placed around the pin.
  • the quenching chamber 16 is fastened to the housing 1 by inserting the fasteners 19 into the corresponding openings in the quenching chamber 16 mounted on the housing 1, then pressing down with a screwdriver while compressing the spring 22 and rotating it by 90 °.
  • the fastening element 19 When the fastening element 19 is rotated, the radially projecting parts 20 engage like a bayonet lock under a housing part. After removing the screwdriver, the arcing chamber 16 sits on the housing 1. The spring 22 presses the radially projecting parts into a groove in the housing part and thus prevents the fastening element 19 from being inadvertently twisted and released.
  • a latch 23, which is shown only in FIGS.
  • This bolt 23 has a pin 24 at the bottom, which is inserted into a bore in the housing 1.
  • the pin 24 secures a rotatable mounting of the bolt 23 in the housing 1.
  • the upper surface of the bolt 23 is in contact with a housing part, so that the bolt 23 is securely rotatably guided in the housing 1.
  • the bolt 23 is loaded in the housing 1 by the spring 25 shown in Figure 7, so that the bolt 1 freely rotatable in the housing 23 pivots in the direction of the contact carrier 3.
  • FIG. 3 shows the contactor without an extinguishing chamber 16 with the contact carrier 3 guided in the housing 1 and with the two schematically illustrated latches 23 which are retained in the unlocked position.
  • the rotatably mounted latches 23 would turn counterclockwise due to the action of the spring 25 turn and lock the contact carrier 3 in the housing 1 if they would not be retained in the unlocked position because of the better representation.
  • FIG. 1 it can be seen that when the bolt 23 is pivoted in, the contact carrier 3 is locked in the housing 1 and that the contactor cannot be switched on when the contact carrier 3 is locked.
  • FIGS. 8 to 13 show the various positions of the bolt 23 and the functions associated therewith.
  • FIGS. 8, 10 and 12 show the elevations of the housing, contact carrier or quenching chamber parts in section and FIGS. 9, 11 and 13 show the schematic floor plans of these parts.
  • FIGS. 8 and 9 show the attachment point of the extinguishing chamber 16 in the case of a contactor with the extinguishing chamber 16 ready to be switched on.
  • the laterally projecting parts 20 of the fastening element 19 on the one hand reach under the housing part and hold the extinguishing chamber 16 firmly on the housing 1 and lie otherwise in the slot of the bolt 23 and hold the bolt 23 against the force of the spring 25 in the unlocked position.
  • FIGs 10 and 11 show the attachment point of the extinguishing chamber 16 when the contactor is switched on. It can be seen here that the bolt 23 can only be rotated counterclockwise by the fastening element 19 coupled with it until the bolt 23 is in contact with the contact carrier 3. In this position, the laterally protruding parts 20 of the fastening element 19 cannot be made to coincide with the slots provided for them in the housing 1 and the fastening element 19 cannot therefore be pulled out of the housing 1. In this position, the extinguishing chamber 16 cannot be removed from the housing 1.
  • FIGS. 12 and 13 show the fastening point provided for the extinguishing chamber 16 with the extinguishing chamber 16 removed.
  • the latch 23 swivels counterclockwise due to the action of the spring 25 and locks the contact carrier 3 in the housing 1.
  • the contactor cannot be switched on when the extinguishing chamber 16 is removed be because of the bolt 23 in the on the contact carrier 3 existing opening protrudes and thus prevents a displacement of the contact carrier 3 in the switch-on direction.
  • the bolt 23 can be rotated clockwise with the parts 20 of the fastening element 19 which project laterally into the bolt 23 until the position shown in FIGS. 8 and 9 is reached .
  • the contactor can be switched on again in this position.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
EP19910121316 1991-05-29 1991-12-12 Electromagnetic switch apparatus, particularly a contactor Withdrawn EP0515731A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH158691A CH682113A5 (fr) 1991-05-29 1991-05-29
CH1586/91 1991-05-29

Publications (2)

Publication Number Publication Date
EP0515731A2 true EP0515731A2 (fr) 1992-12-02
EP0515731A3 EP0515731A3 (en) 1993-06-09

Family

ID=4213881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910121316 Withdrawn EP0515731A3 (en) 1991-05-29 1991-12-12 Electromagnetic switch apparatus, particularly a contactor

Country Status (2)

Country Link
EP (1) EP0515731A3 (fr)
CH (1) CH682113A5 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341330C1 (de) * 1993-12-03 1995-04-20 Siemens Ag Elektromagnetisches Schaltgerät
US6132210A (en) * 1995-06-26 2000-10-17 Shade Analyzing Technologies, Inc. Tooth shade analyzer system and methods
CN1104733C (zh) * 1996-07-24 2003-04-02 施耐德电器工业公司 电磁开关装置
CN102426991A (zh) * 2011-09-20 2012-04-25 上海诺雅克电气有限公司 一种带有触头止锁机构的接触器
US8933359B2 (en) 2011-12-29 2015-01-13 Progress Rail Services Corp Locomotive positive power bus contactor method of assembly
CN107170604A (zh) * 2016-04-29 2017-09-15 浙江英洛华新能源科技有限公司 高压直流继电器相向电弧隔离装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612796A (en) * 1969-08-06 1971-10-12 Allis Chalmers Mfg Co Interlock between contactor and arc chute
US3992599A (en) * 1974-05-16 1976-11-16 Allis-Chalmers Corporation Interlock for arc chute of circuit maker and breaker
DE3402836A1 (de) * 1984-01-27 1985-08-01 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches schaltgeraet
EP0157934A1 (fr) * 1984-03-15 1985-10-16 Siemens Aktiengesellschaft Dispositif de fixation pour chambres d'arc

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612796A (en) * 1969-08-06 1971-10-12 Allis Chalmers Mfg Co Interlock between contactor and arc chute
US3992599A (en) * 1974-05-16 1976-11-16 Allis-Chalmers Corporation Interlock for arc chute of circuit maker and breaker
DE3402836A1 (de) * 1984-01-27 1985-08-01 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches schaltgeraet
EP0157934A1 (fr) * 1984-03-15 1985-10-16 Siemens Aktiengesellschaft Dispositif de fixation pour chambres d'arc

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341330C1 (de) * 1993-12-03 1995-04-20 Siemens Ag Elektromagnetisches Schaltgerät
WO1995015574A1 (fr) * 1993-12-03 1995-06-08 Siemens Aktiengesellschaft Appareil electromagnetique de coupure
US5825269A (en) * 1993-12-03 1998-10-20 Siemens Aktiengesellschaft Electromagnetic switchgear
CN1044754C (zh) * 1993-12-03 1999-08-18 西门子公司 电磁开关装置
US6132210A (en) * 1995-06-26 2000-10-17 Shade Analyzing Technologies, Inc. Tooth shade analyzer system and methods
CN1104733C (zh) * 1996-07-24 2003-04-02 施耐德电器工业公司 电磁开关装置
CN102426991A (zh) * 2011-09-20 2012-04-25 上海诺雅克电气有限公司 一种带有触头止锁机构的接触器
CN102426991B (zh) * 2011-09-20 2014-12-10 上海诺雅克电气有限公司 一种带有触头止锁机构的接触器
US8933359B2 (en) 2011-12-29 2015-01-13 Progress Rail Services Corp Locomotive positive power bus contactor method of assembly
US9697964B2 (en) 2011-12-29 2017-07-04 Progress Rail Services Corporation Locomotive positive power bus contactor method of assembly
CN107170604A (zh) * 2016-04-29 2017-09-15 浙江英洛华新能源科技有限公司 高压直流继电器相向电弧隔离装置

Also Published As

Publication number Publication date
EP0515731A3 (en) 1993-06-09
CH682113A5 (fr) 1993-07-15

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