WO1995012891A1 - Commutateur electrique a commande electromagnetique - Google Patents

Commutateur electrique a commande electromagnetique Download PDF

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Publication number
WO1995012891A1
WO1995012891A1 PCT/SE1994/001006 SE9401006W WO9512891A1 WO 1995012891 A1 WO1995012891 A1 WO 1995012891A1 SE 9401006 W SE9401006 W SE 9401006W WO 9512891 A1 WO9512891 A1 WO 9512891A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching device
stand
electric switching
fixed
magnet
Prior art date
Application number
PCT/SE1994/001006
Other languages
English (en)
Inventor
Robert Nordgren
Original Assignee
Asea Brown Boveri Ab
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 Asea Brown Boveri Ab filed Critical Asea Brown Boveri Ab
Publication of WO1995012891A1 publication Critical patent/WO1995012891A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/045—Details particular to contactors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/042—Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H01H50/305—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature damping vibration due to functional movement of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings

Definitions

  • the present invention relates to an electric switching device of the kind described in the preamble to claim 1.
  • the inven ⁇ tion is particularly suitable for use with contactors for rated insulation voltages of up to about 1000 V.
  • the fixed part of the operating magnet comprising a magnet core and an operating coil
  • the fixed part of the operating magnet comprising a magnet core and an operating coil
  • the known contactor is provided with a rubber spring disposed between the magnet core and the bottom plate of the contactor stand, and with four spiral springs for fixing the operating coil. Between the rubber spring and the core there is required a plastic sheet to reduce the frictional force.
  • the object of the present invention is to provide an electric switching device of the above-mentioned kind, which is simpler to manufacture and thus less expensive than compa ⁇ rable prior art designs. This is achieved according to the invention by an electric switching device with the character ⁇ istic features described in claim 1.
  • the number of components included in the electric switching device can be considerably reduced, which means a considerable reduction of the manufacturing cost.
  • the resilience also absorbs the movements which arise in the core during operation of the electric switching device.
  • space is created for the latch which is required to keep the coil and the core in position for operation, it being possible to arrange this latch such that it utilizes the force from a still necessary spring, the main function of which is, in a currentless operating coil, to return the movable contacts of the electric switching device to the open position.
  • Figures 1 and 2 show schematically in a longitudinal section a contactor designed according to the invention, before and after the mounting of the fixed magnet part of the operating magnet,
  • Figure 3 shows the operating coil of the contactor in a side view
  • Figure 4 shows the magnet core of the contactor in a side view
  • Figure 5 shows, in a side view, the operating coil and the magnet core mounted in a holder
  • Figure 6 shows a section along the line VI-VI in Figure 5
  • Figure 7 shows the lower part of the contactor in a section along the line VII-VII in Figure 1,
  • Figure 8 shows the contactor in a section along the line VIII-VIII in Figure 7, but without the fixed magnet part mounted
  • Figure 9 shows the contactor stand in a view from the bottom side
  • Figure 10 shows the contactor in a section along the line X-X in Figure 7.
  • the contactor shown in Figures 1 and 2 has three poles and has a rated insulation voltage of, for example, 750 V.
  • the rated current of the contactor may, for example, be in the range 100-1000 A.
  • the contactor is built up on a stand 10 of glassfibre-reinforced thermoplastic resin, for example amide resin.
  • the contact device of the contactor comprises in each pole two electrically series-connected breaks, each of which has a fixed contact 20 mounted on the stand 10. In closed contact position, the fixed contacts are interconnected through a movable contact bridge 21, which together with a contact pressure spring 22 is attached to a contact carrier 23 displaceable between a closed and an open position.
  • the contact carrier is connected to the armature 30 of the opera ⁇ ting magnet of the contactor, the magnet core and coil of the operating magnet being designated 31 and 32, respectively.
  • FIGs 3-6 show how the fixed magnet part of the operating magnet, consisting of the magnet core 31 and the operating coil 32, is designed.
  • the operating coil 32 consists of two series-connected sub-coils 32a, 32b (Fig. 3), which are each wound on a respective bobbin and which are fixed to a coil holder 33 (Fig. 5) made of plastic, on which cable terminals 34 for the operating coil are fixed.
  • the magnet core 31 (Fig. 4) is U-shaped and built up of sheet laminations which are held together by two support bars 37, arranged on both sides of the magnet yoke, and through-going rivets 38.
  • the magnet core 31 is fixed to the coil holder 33 by means of snap fasteners 35 (Fig. 6) provided on the coil holder, the snap fasteners engaging into a through-hole 39 in the extended yoke of the magnet core.
  • the two legs of the core are thus each surrounded by one of the sub-coils 32a, 32b.
  • the coil holder 33 with the operating coil 32 and the magnet core 31 may be inserted through an opening in one side wall of the contactor stand 10 into the position shown in Figure 2. This causes the magnet core to make direct contact with a resilient portion which is formed in the bottom part 11 of the contactor stand and which, via the core 31, presses the coil holder 33 into abutment against fixed stop means 12 provided in the stand 10.
  • Figures 7, 8 and 9 show that the resilient portion consists of two side beams 13, 14 which are arranged on opposite sides of the magnet core and which are joined on the back by means of a cross-beam 15.
  • the beams 13-15 are joined to the other part of the contactor stand, at the front by means of connec ⁇ ting pieces 16, 17 ' (Fig. 9), and at the back by means of a connecting piece 18 arranged at the centre of the cross- beam 15.
  • the side beams are provided with sliding surfaces 19, the lower edge surface of the support bars 37 of the magnet core making contact with these sliding surfaces. From Figure 8 it is clear that the sliding surfaces are formed with an incli ⁇ ned transition portion between a lower and a higher level. This facilitates the insertion of the magnet core into the operating position.
  • the fixed magnet part is fixed in its operating position by means of a latch 40 (Figs. 1, 2 and 10) which receives its force from one of the opening springs 24.
  • the latch is designed as a two-armed lever, rotatable about a bearing point 41, and exhibits a latching surface 42 which cooperates with a latching projection 36 on the coil holder 33.
  • the rear part of the latch is formed into a seat for the opening spring 24, whereas the front part of the latch is formed into a trigger 43.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Electromagnets (AREA)

Abstract

L'invention porte sur un commutateur électrique à commande électromagnétique et en particulier sur un contacteur comportant au moins un contact fixe (20) monté sur un socle (10) de plastique renforcé de fibres, et un contact mobile (21) coopérant avec le contact fixe et monté sur un support (23) relié à l'induit (20) d'un aimant de commande. Le noyau (31) et la bobine (32) de l'aimant peuvent se remplacer sans l'aide d'outils et sans avoir à démonter le commutateur ou à le détacher de son plan de montage. L'élasticité nécessaire pour fixer le noyau (31) au bon niveau est donnée par le socle (10) du commutateur. Le positionnement correct de la bobine (32) et du noyau (31) dans le sens latéral est assuré par un cliquet (40) recevant sa force d'un ressort (24), dont la fonction principale est de remettre le contact mobile en position d'ouverture lorsque la bobine n'est pas excitée.
PCT/SE1994/001006 1993-11-04 1994-10-26 Commutateur electrique a commande electromagnetique WO1995012891A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9303637A SE9303637L (sv) 1993-11-04 1993-11-04 Elektromagnetiskt manövrerad elkopplare
SE9303637-4 1993-11-04

Publications (1)

Publication Number Publication Date
WO1995012891A1 true WO1995012891A1 (fr) 1995-05-11

Family

ID=20391637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1994/001006 WO1995012891A1 (fr) 1993-11-04 1994-10-26 Commutateur electrique a commande electromagnetique

Country Status (2)

Country Link
SE (1) SE9303637L (fr)
WO (1) WO1995012891A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10009496A1 (de) * 2000-02-29 2001-09-06 Siemens Ag Elektromagnetisches Schaltgerät, z.B. Schütz
WO2001069625A1 (fr) * 2000-03-17 2001-09-20 Siemens Aktiengesellschaft Appareil de commutation electromagnetique, en particulier contacteur electromagnetique
WO2001069626A1 (fr) * 2000-03-17 2001-09-20 Siemens Aktiengesellschaft Appareil de commutation electromagnetique, en particulier contacteur electromagnetique
EP1248277A1 (fr) * 2001-04-06 2002-10-09 SERD Société d'Etude et de Réalisation de Disjoncteurs Déclencheur électromagnétique comportant un circuit électromagnétique reposant sur un socle déformable élastiquement et déclencheur électromagnétique comprenant une bobine flottante
EP1978536A1 (fr) 2007-03-28 2008-10-08 Siemens Aktiengesellschaft Appareil de commutation électromécanique
CN105957773A (zh) * 2016-06-01 2016-09-21 北京人民电器厂有限公司 电磁线圈组件

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964006A (en) * 1974-01-03 1976-06-15 La Telemecanique Electrique Electrical apparatus
DE2501610B2 (de) * 1975-01-16 1977-03-10 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches schaltgeraet mit einer abnehmbaren bodenplatte
DE2620210B2 (de) * 1976-05-07 1979-10-31 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur elastischen Lagerung des Magnetkernes elektromagnetischer Schaltgeräte
US4253076A (en) * 1978-01-19 1981-02-24 La Telemec Anique Electrique Contactor for control of high currents
US4281305A (en) * 1979-06-18 1981-07-28 Clark Control, Inc. Electromagnetic switching apparatus
DE2642124C2 (de) * 1976-09-18 1983-09-22 Brown, Boveri & Cie Ag, 6800 Mannheim Elektromagnetisches Schütz
DE2844361C2 (de) * 1977-10-18 1984-03-29 La Télémécanique Electrique, 92002 Nanterre, Hauts-de-Seine Elektromagnet
US4506243A (en) * 1981-05-28 1985-03-19 Mitsubishi Denki Kabushiki Kaisha Electromagnetic contactor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964006A (en) * 1974-01-03 1976-06-15 La Telemecanique Electrique Electrical apparatus
DE2501610B2 (de) * 1975-01-16 1977-03-10 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches schaltgeraet mit einer abnehmbaren bodenplatte
DE2620210B2 (de) * 1976-05-07 1979-10-31 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur elastischen Lagerung des Magnetkernes elektromagnetischer Schaltgeräte
DE2642124C2 (de) * 1976-09-18 1983-09-22 Brown, Boveri & Cie Ag, 6800 Mannheim Elektromagnetisches Schütz
DE2844361C2 (de) * 1977-10-18 1984-03-29 La Télémécanique Electrique, 92002 Nanterre, Hauts-de-Seine Elektromagnet
US4253076A (en) * 1978-01-19 1981-02-24 La Telemec Anique Electrique Contactor for control of high currents
US4281305A (en) * 1979-06-18 1981-07-28 Clark Control, Inc. Electromagnetic switching apparatus
US4506243A (en) * 1981-05-28 1985-03-19 Mitsubishi Denki Kabushiki Kaisha Electromagnetic contactor

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10009496C2 (de) * 2000-02-29 2001-12-13 Siemens Ag Elektromagnetisches Schaltgerät, z.B. Schütz
WO2001065579A1 (fr) * 2000-02-29 2001-09-07 Siemens Aktiengesellschaft Commutateur electromagnetique, par ex. contacteur
US6597267B2 (en) 2000-02-29 2003-07-22 Siemens Aktiengesellschaft Electromagnetic switching device, for example, contactor
DE10009496A1 (de) * 2000-02-29 2001-09-06 Siemens Ag Elektromagnetisches Schaltgerät, z.B. Schütz
DE10013353C2 (de) * 2000-03-17 2002-02-07 Siemens Ag Elekromagnetisches Schaltgerät, insbesondere Schütz
WO2001069625A1 (fr) * 2000-03-17 2001-09-20 Siemens Aktiengesellschaft Appareil de commutation electromagnetique, en particulier contacteur electromagnetique
DE10013353A1 (de) * 2000-03-17 2001-10-04 Siemens Ag Elekromagnetisches Schaltgerät, insbesondere Schütz
DE10013314C2 (de) * 2000-03-17 2002-01-17 Siemens Ag Elektromagnetisches Schaltgerät, insbesondere Schütz
WO2001069626A1 (fr) * 2000-03-17 2001-09-20 Siemens Aktiengesellschaft Appareil de commutation electromagnetique, en particulier contacteur electromagnetique
US6870450B2 (en) 2000-03-17 2005-03-22 Siemens Aktiengesellschaft Electromagnetic switching device, in particular a contactor
DE10013314A1 (de) * 2000-03-17 2001-10-04 Siemens Ag Elektromagnetisches Schaltgerät, insbesondere Schütz
FR2823369A1 (fr) * 2001-04-06 2002-10-11 Realisation De Disjoncteurs So Declencheur electromagnetique comportant un circuit electromagnetique reposant sur un socle deformable elastiquement et declencheur electromagnetique comprenant une bobine flottante
EP1248277A1 (fr) * 2001-04-06 2002-10-09 SERD Société d'Etude et de Réalisation de Disjoncteurs Déclencheur électromagnétique comportant un circuit électromagnétique reposant sur un socle déformable élastiquement et déclencheur électromagnétique comprenant une bobine flottante
EP1978536A1 (fr) 2007-03-28 2008-10-08 Siemens Aktiengesellschaft Appareil de commutation électromécanique
US7737811B2 (en) 2007-03-28 2010-06-15 Siemens Aktiengesellschaft Electromechanical switching device
EP1978536B1 (fr) * 2007-03-28 2012-11-28 Siemens Aktiengesellschaft Appareil de commutation électromécanique
CN105957773A (zh) * 2016-06-01 2016-09-21 北京人民电器厂有限公司 电磁线圈组件
CN105957773B (zh) * 2016-06-01 2021-07-20 北京人民电器厂有限公司 电磁线圈组件

Also Published As

Publication number Publication date
SE9303637L (sv) 1995-05-05
SE9303637D0 (sv) 1993-11-04

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