EP0164276B1 - Elektrische Schaltanlage mit einer gasdichten Kontaktschutzkappe - Google Patents

Elektrische Schaltanlage mit einer gasdichten Kontaktschutzkappe Download PDF

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Publication number
EP0164276B1
EP0164276B1 EP85400449A EP85400449A EP0164276B1 EP 0164276 B1 EP0164276 B1 EP 0164276B1 EP 85400449 A EP85400449 A EP 85400449A EP 85400449 A EP85400449 A EP 85400449A EP 0164276 B1 EP0164276 B1 EP 0164276B1
Authority
EP
European Patent Office
Prior art keywords
accordance
switching apparatus
contact
face
protective casing
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.)
Expired
Application number
EP85400449A
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English (en)
French (fr)
Other versions
EP0164276A1 (de
Inventor
Elie Belbel
Robert Caudron
Louis Fechant
André Haury
Michel Lauraire
Jacques Muniesa
Lucien Siffroi
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.)
Telemecanique SA
Original Assignee
Telemecanique Electrique SA
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 Telemecanique Electrique SA filed Critical Telemecanique Electrique SA
Publication of EP0164276A1 publication Critical patent/EP0164276A1/de
Application granted granted Critical
Publication of EP0164276B1 publication Critical patent/EP0164276B1/de
Expired 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
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/64—Protective enclosures, baffle plates, or screens for contacts
    • H01H1/66—Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
    • 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
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H01H50/22—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • H01H2050/025—Details concerning sealing, e.g. sealing casing with resin containing inert or dielectric gasses, e.g. SF6, for arc prevention or arc extinction

Definitions

  • Such devices can be used, either when the environment in which they are found has any aggressive character (acidity, humidity, dust), or even when one wishes to reduce the harmful and inevitable influence of oxygen on the contacts, even when the surrounding atmosphere is normal.
  • the invention proposes to provide an electrical switching device of the aforementioned type in which money is not used for the materials of the contact pads of the switches and to provide inexpensive means for keeping in the atmosphere which surrounds them with non-aggressive properties for the chosen materials.
  • this device is characterized in that the contact pads of the switches are essentially based on copper materials, while the atmosphere confined under the protective cover has and retains a non-oxidizing character, thanks to means of 'sealing of particular shape, which are placed between, on the one hand, the frame and a first face of the body, on the other hand between the cover and a second face of the body opposite to the first.
  • the apparatus 1 comprises a body 2 of electrically insulating material of generally parallelepiped shape having a lower face 21 under which there is an electromagnet 11 constituted by a fixed magnetizable yoke 7 formed by the association magnetizable parts 3, 4, 5, 6, an excitation coil 10 comprising a carcass B having a bore 13 and a winding 9, and a movable magnetizable armature or core 15 preferably of cylindrical shape which is subjected to the action a return spring 14 giving it a visible rest position in Figure 1.
  • a support is fixed to the magnetizable part 4 to fix the device to a frame.
  • the magnetizable part 3 fixed under the body 2 has an opening 16 through which passes the cylindrical part 17 of a bowl 55 which is magnetic and made for example of brass and which serves as a housing for the core 15 and the spring 14.
  • the bottom 18 of this bowl is placed in the immediate vicinity and preferably against the upper surface 19 of the magnetizable part 5. This bottom serves at the same time as an anti-air gap remanence of the electromagnet.
  • the upper edge of this bowl 55 is extended outwards by a flat collar 20 (see FIGS. 1 and 3) which rests on the upper surface 12 of the part 3 and which is applied by the latter against the lower surface 21 of the body 2.
  • a groove 22 receiving an elastic seal 23, for example an O-ring, which is compressed by the flange 20 when the part 3 is fixed against the surface 21 of the body 2 by means, not shown, such as screw, so that a tight connection is made between the body 2 and the interior volume of the bowl 55.
  • an elastic seal 23 for example an O-ring
  • a housing 24 which serves as a stop for the core 15 and which opens into an axial clearance 25 which passes through the body 2, in which is mounted an insulating contact carrier 26 which extends above the body 2 by several parallel branches, the number of which corresponds to the number of switches arranged above the body 2.
  • Each of these branches such as the branch 27 has (see FIG. 2) a window 60 in which is placed a contact bridge 28 and a contact pressure spring 29 (see FIG. 1) which applies it towards the core 15 against the bottom of this window 60.
  • each fixed contact piece 34 or 35 has a cylindrical intermediate portion such as 39 which is placed in a cylindrical cavity or half-housing such as 40 provided in the upper surface 41 of body 2. (See Figure 6).
  • This edge of this cover 42 adjacent to the surface 41 of the body has a plane peripheral rim 43 perpendicular to the side walls of the cover.
  • This peripheral rim 43 comprises several cavities or cylindrical half-housings such as 44 (see FIG. 5) which are arranged opposite the cylindrical half-housings 40 to form, when the cover 42 is mounted on the body 2, a complete housing receiving the cylindrical intermediate portions 39 of the contact parts 34, 35 (see FIG. 6).
  • This seal 47 is molded in one piece from an elastomeric material and has as many O-shaped parts such as 48 perpendicular to the rectangular loop of the seal, as the device has fixed contact parts 34. 35, the intermediate portions 39 of these being inserted into said toric parts 48.
  • This seal 47 advantageously finds its place in grooves such as 51, 52 (see FIG. 6) formed both on the portions of flat surfaces 45 of the rim 43 of the cover 42 and on the cavities 40 of the upper surface 41 of the body 2 so to undergo a measured compression when the cover 42 is mounted on the body 2.
  • Special O-rings such as 49 can also be placed in the half-housings 40, 44 around the intermediate cylindrical portions 39 of the fixed contact parts so that they can be compressed during assembly, like the seal 47 in order to perfect sealing.
  • the cover 42 which advantageously has internal isolation partitions such as 50 (see FIG. 2) for separating two neighboring switches 54, 53 can be filled with a particular atmosphere thanks to one or more orifices capable of being closed, but not represented.
  • Such an atmosphere can be either vacuum, or a mixture in any proportion of non-oxidizing gases such as N 2 , H 2 , Ar, He, or even an atmosphere containing electronegative and dielectric gases such as SF 6 . CF 4 , CC1 4 or a mixture of these with non-oxidizing gases.
  • the body 2 can be made either of a plastic material, or of a ceramic material, the surfaces of which having to cooperate with the seals 47, 49 will advantageously be machined, in particular rectified after molding.
  • the device 1 A comprises a protective cover 42, switches, and an upper surface of the body identical to those of the device according to FIGS. 1 to 6. These parts are therefore designated by the same references.
  • the electromagnet and the contact holder of the device 1A are different.
  • the contact holder 82 visible in FIG. 7 has, like that of the apparatus 1 shown in FIGS. 1 and 2, parallel branches 62 carrying each a contact bridge 28. These branches which pass through openings such as 64 are connected by a crosspiece 66 which is placed in a housing 81 where the openings open, and which has an extension 63 extending beyond this housing.
  • An intermediate region 83 of this extension has on its outer surface a groove 67 advantageously annular which receives one of the ends 68 of a deformable cuff 69 made of elastomeric material, this end preferably being held in this groove 67 by a collar of tightening 74; the other end 70 of this cuff 69 has a bead 71 which is pinched between a lower surface 72 of the body 65 and a flange 73 which surrounds this cuff. This flange 73 is for example fixed on the lower face 72 of the body 65.
  • the deformable cuff 69 consequently provides the seal between the body 65 and the contact carrier, so that the switches such as 36 are placed in a closed volume completely sealed from the outside and in which a non-oxidizing atmosphere is permanently maintained.
  • the contact pads 30, 31, 32, 33 copper-based materials, much less expensive than silver.
  • the electromagnet 80 used in this device comprises a movable armature 75 which is made integral with the extension 63 and which cooperates with an E-shaped cylinder head 76 whose central branch 77 is surrounded by an excitation coil 78.
  • a spring return 79 gives the frame 75 and therefore the contact carrier 62 its rest position, the cylinder head 76 being made directly or indirectly integral with the body 65.
  • the electromagnet 80 is therefore in this second embodiment completely external to the volume contained between the protective cover 42 and the sleeve 69, and can be supplied directly from an alternating current source, the presence of rings of phase shift requiring zero air gaps at their level between the plane rectified parts of the movable armature 75 and of the cylinder head 76.

Landscapes

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

Claims (13)

1. Elektrisches Schaltgerät, enthaltend :
einen Körper (2. 65),
einen Elektromagnet (11, 80), der ein festes Joch (7, 76), einen beweglichen Anker (15, 75) und eine feste Erregerspule (10, 78) aufweist, wobei dieser Elektromagnet diesem Körper über eines seiner festen Elemente zugeordnet ist,
mehrere Unterbrecher (36), die jeweils ein festes Kontaktstück (34, 35) und einen beweglichen Kontakt (28) aufweisen, die mit Kontaktplättchen (30, 31, 32, 33) versehen sind, wobei die beweglichen Kontakte mit ihren Druckfedern auf einem isolierenden Kontaktträger (26, 62) angeordnet sind, der geeignet ist, um in diesem Körper gleitend verschoben zu werden, um das Öffnen und das Schließen der Unterbrecher zu bewerkstelligen, und der mechanisch dem genannten Anker zugeordnet ist, während die festen Kontakte fest mit dem Körper verbunden sind,
eine gasdichte Schutzhaube (42), welche auf dem Körper derart befestigt ist, daß sie die Unterbrecher enthält, und welche eine Isolierung gegenüber letzteren aufweist,
elastische Mittel (14, 79), die geeignet sind, um dem Anker (15, 75) eine Ruhestellung zu geben, in welcher er von dem Joch (7, 76) entfernt ist, dadurch gekennzeichnet, daß die Kontaktplättchen (30), (31), (32), (33) der Unterbrecher (36) hauptsächlich aus kupferhaltigem Material gebildet sind, während die in der Haube (42) eingeschlossene Atmosphäre einen nicht oxidierenden Zustand aufweist und beibehält, was durch Abdichtungsmittel (23, 55 ; 69 ; 47) erreicht wird, die angeordnet sind zwischen einerseits dem Anker (15), (75) und einer ersten Fläche (21) des Körpers (2), (65), und andererseits zwischen der Haube (42) und einer zweiten Fläche (41) des Körpers, welche der erstgenannten gegenüberliegt.
2. Schaltgerät nach Anspruch 1, dadurch gekennzeichnet, daß die festen Kontaktstücke (34, 35) einen zylindrischen Teil (39) aufweisen, der zwischen dem Anschluß (37) und dem Kontaktplättchen (32) enthalten ist, das zum Teil in einer halbzylindrischen Aufnahme (40) an der zweiten Fläche (41) des Körpers eingesetzt ist und zum Teil in einer komplementären halbzylindrischen Aufnahme (44) eingesetzt ist, welche an einem Umfangsrand (43) der Haube (42), welcher an diese zweite Fläche angrenzt, angeordnet ist.
3. Schaltgerät nach Anspruch 2, dadurch gekennzeichnet, daß eine einteilig geformte allgemeine Dichtung (47) die zylindrischen Teile (39) örtlich umgibt und sich zwischen diesen Teilen längs der genannten zweiten Fläche (41) und des Randes (43) der Haube erstreckt.
4. Schaltgerät nach Anspruch 3, dadurch gekennzeichnet, daß die Dichtung (47) eine Schleife von allgemein rechtwinkliger Form bildet und torische Teile (48) aufweist, welche senkrecht zu der durch die Dichtung gebildeten Schleife sind, wobei diese torischen Teile den zylindrischen Teil (39) der festen Kontaktstücke (34, 35) umgeben und von den Aufnahmen (40, 44) umgeben werden und durch diese zusammengedrückt sind.
5. Schaltgerät nach Anspruch 4, dadurch gekennzeichnet, daß eine besondere Dichtung (49), die ringförmig ist, um den zylindrischen Teil (39) jedes festen Kontaktstücks herum und in der Nähe der allgemeinen Dichtung (47) derart angeordnet ist, daß sie von den Halbaufnahmen (40, 44) umgeben und durch diese zusammengedrückt wird.
6. Schaltgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Schutzhaube (42) in ihrem Inneren Trennwände (50) aufweist, die dazu bestimmt sind, zwei benachbarte Unterbrecher (53, 54) voneinander zu isolieren.
7. Schaltgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Schutzhaube (42) aus einem Keramik-, Polymer- oder Metallmaterial gebildet und mit diesen Materialien beschichtet ist.
8. Schaltgerät nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, daß die Schutzhaube (42) eine Atmosphäre enthält, die wenigstens teilweise zusammengesetzt ist aus einem nicht oxidierenden Gas wie Stickstoff, Wasserstoff, Argon oder Helium.
9. Schaltgerät nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, daß die Schutzhaube (42) eine Atmosphäre enthält, die wenigstens teilweise zusammengesetzt ist aus einem elektronegativen Gas wie Schwefelhexafluorid.
10. Schaltgerät nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die erste Fläche (21) des Körpers (2) eine Dichtung (23) umfaßt, die an einem Kranz (20) in Anlage ist. welcher an einer zylindrischen unmagnetischen Wanne (55) gebildet ist, die in die Bohrung (13) des Körpers (8) der Spule (10) eindringt und einen Anker in Form eines Tauchkerns (15) enthält, der an einen Kontaktträger (26) angeschlossen ist, welcher einen Durchgang (24, 25) des Körpers (2) durchquert.
11. Schaltgerät nach Anspruch 9, dadurch gekennzeichnet, daß der Kranz (20) gegen die erste Fläche (21) und gegen die Dichtung (23) über ein festes Jochteil (3) angelegt ist, welches die Schale (55) umgibt.
12. Schaltgerät nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die erste Fläche (72) des Körpers (65) mit einem ersten festen Ende (70) einer deformierbaren Hülse (69) zusammenwirkt, wovon ein zweites, bewegliches Ende (68) an den Umfang (67) einer Verlängerung (63, 83) des Kontaktträgers (82) angelegt ist, der den Unterbrechern (36) gegenüberliegt, und mechanisch mit dem Anker (75) des Elektromagneten (80) verbunden ist.
13. Schaltgerät nach Anspruch 12, dadurch gekennzeichnet, daß das erste Ende (70) der Hülse (69) einen Wulst (71) umfaßt, der gegen die erste Fläche (72) durch einen an dem Körper (65) befestigten Flansch (73) angelegt ist.
EP85400449A 1984-03-28 1985-03-08 Elektrische Schaltanlage mit einer gasdichten Kontaktschutzkappe Expired EP0164276B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404826 1984-03-28
FR8404826A FR2562321B1 (fr) 1984-03-28 1984-03-28 Appareil electrique de commutation comprenant un capot de protection des contacts, etanche au gaz

Publications (2)

Publication Number Publication Date
EP0164276A1 EP0164276A1 (de) 1985-12-11
EP0164276B1 true EP0164276B1 (de) 1987-09-09

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EP85400449A Expired EP0164276B1 (de) 1984-03-28 1985-03-08 Elektrische Schaltanlage mit einer gasdichten Kontaktschutzkappe

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US (1) US4638275A (de)
EP (1) EP0164276B1 (de)
JP (1) JPS60236428A (de)
DE (2) DE3560612D1 (de)
FR (1) FR2562321B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817361A1 (de) * 1987-05-25 1988-12-08 Matsushita Electric Works Ltd Gasdichtes schaltglied

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Publication number Priority date Publication date Assignee Title
DE8424008U1 (de) * 1984-08-13 1985-12-12 Diehl GmbH & Co, 8500 Nürnberg Schaltschieber
DE3430490A1 (de) * 1984-08-18 1986-02-27 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim Schaltkammer fuer ein elektrisches schaltgeraet, insbesondere zur verwendung in der niederspannungs-energietechnik
US4998082A (en) * 1989-08-28 1991-03-05 Babcock, Inc. Latching relay switch assembly
US5003275A (en) * 1989-08-28 1991-03-26 Babcock, Inc. Non-latching relay switch assembly
CH683727A5 (de) * 1992-06-11 1994-04-29 Alcatel Str Ag Relais.
DE69302228T2 (de) * 1992-06-25 1996-10-02 Matsushita Electric Works Ltd Gekapselte Kontaktanordnung
US5680084A (en) * 1994-11-28 1997-10-21 Matsushita Electric Works, Ltd. Sealed contact device and operating mechanism
US5892194A (en) * 1996-03-26 1999-04-06 Matsushita Electric Works, Ltd. Sealed contact device with contact gap adjustment capability
US7982564B2 (en) * 2008-06-30 2011-07-19 Remy Technologies, Llc Starter solenoid with vibration resistant features
JP2010192416A (ja) * 2009-01-21 2010-09-02 Panasonic Electric Works Co Ltd 封止接点装置
JP5385877B2 (ja) * 2010-08-31 2014-01-08 富士電機機器制御株式会社 電磁開閉器
JP6160303B2 (ja) * 2013-06-27 2017-07-12 オムロン株式会社 スイッチユニット
US20150002247A1 (en) * 2013-07-01 2015-01-01 Lsis Co., Ltd. Electro-magnetic contactor
DE102014110602A1 (de) * 2014-02-28 2015-09-03 Johnson Electric Germany GmbH & Co. KG Gerät mit einem beweglichen Bauteil
DE112020005406T5 (de) * 2019-11-01 2022-08-18 Xiamen Hongfa Automotive Electronics Co., Ltd. Elektromagnetisches relais
DE102020203056A1 (de) * 2020-03-10 2021-09-16 Te Connectivity Germany Gmbh Elektrische Schaltvorrichtung, insbesondere ein Stromschütz oder ein Relais, mit Kontaktierungselement und Befestigungselement
FR3113181A1 (fr) * 2020-07-28 2022-02-04 Arianegroup Sas Dispositif à chambre intérieure étanche

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Publication number Priority date Publication date Assignee Title
DE3817361A1 (de) * 1987-05-25 1988-12-08 Matsushita Electric Works Ltd Gasdichtes schaltglied

Also Published As

Publication number Publication date
EP0164276A1 (de) 1985-12-11
JPH0527933B2 (de) 1993-04-22
US4638275A (en) 1987-01-20
JPS60236428A (ja) 1985-11-25
FR2562321A1 (fr) 1985-10-04
DE164276T1 (de) 1986-04-10
DE3560612D1 (en) 1987-10-15
FR2562321B1 (fr) 1986-08-01

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