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EP0515729B1 - Appareillage interrupteur électromagnétique, en particulier contacteur - Google Patents

Appareillage interrupteur électromagnétique, en particulier contacteur Download PDF

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Publication number
EP0515729B1
EP0515729B1 EP91119117A EP91119117A EP0515729B1 EP 0515729 B1 EP0515729 B1 EP 0515729B1 EP 91119117 A EP91119117 A EP 91119117A EP 91119117 A EP91119117 A EP 91119117A EP 0515729 B1 EP0515729 B1 EP 0515729B1
Authority
EP
European Patent Office
Prior art keywords
armature
contact carrier
transmission lever
contact
switch apparatus
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 - Lifetime
Application number
EP91119117A
Other languages
German (de)
English (en)
Other versions
EP0515729A3 (en
EP0515729A2 (fr
Inventor
Ernst Fischer
Hans Gehbauer
Otto Walther
Hans Weichert
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 EP0515729A2 publication Critical patent/EP0515729A2/fr
Publication of EP0515729A3 publication Critical patent/EP0515729A3/de
Application granted granted Critical
Publication of EP0515729B1 publication Critical patent/EP0515729B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • 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

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 movable contact pieces attached to a contact carrier, which can be brought into and out of engagement with the armature of the switching magnet, and with at least one effective translation lever between the armature of the switching magnet and the contact carrier which is guided in the housing of the switching device in the stroke direction of the armature.
  • an electromagnetic switching device of the type mentioned is known.
  • the traction force curve of the magnet is adapted to the force requirement curve of the contact system in that the movement of the armature is transmitted to the contact system by means of a curved path.
  • the cam track is arranged along the actuating end of a transmission lever which transmits the magnetic force to the contact system and reinforces it.
  • the armature of the electromagnet pushes the actuating end of the transmission lever perpendicular to the stroke direction of the armature when the electromagnet is tightened via the cam track.
  • the contact system which can be actuated by this rectangularly angled transmission lever, which is fixed in the knee region, is brought into the closed position.
  • the contact pieces of the switching device are opened after the excitation voltage of the electromagnet is interrupted by the return spring of the electromagnetic switching device acting on the contact system, but only after the transmission lever has been released.
  • the translation lever is supported in the switched-on position of the switching device and also at the beginning of a switching-off movement with a very flat area of the cam track on the armature.
  • the speed of interruption of the contact pieces also depends on any additional elements that do not separate the armature from the transmission lever and are not mentioned in the description.
  • Another disadvantage of this electromagnetic switching device is that the cam track must be designed very precisely and with a correspondingly high outlay in order to achieve the desired contact piece movement.
  • the displacement forces of the transmission lever provided with the cam track act perpendicular to the stroke direction of the armature.
  • Anchor guide have the desired accuracy of the translation lever movement, which in turn is associated with costs.
  • This electromagnetic switching device also takes up a lot of space, in particular the coupling point between the transmission lever and the contact system.
  • the assembly of the switchgear is also complicated and involves significant costs.
  • the object of the present invention is to develop an electromagnetic switching device of the type mentioned at the outset, which consists of parts which are suitable for simple automatic assembly and which enable a compact, space-saving arrangement, which functions reliably in any position and is economically advantageous.
  • the translation lever is pivotally and displaceably supported with its one end on the stationary housing and with its other end on the contact carrier at least in the stroke direction of the armature in the plane of movement of the translation lever, and that the central region of the translation lever is rotatably mounted on the armature and is guided in the stroke direction of the armature and that at least one spring pushing the armature away from the contact carrier is present between the contact carrier and the armature displaceably guided thereon in the stroke direction.
  • the transmission lever with its central region is only rotatably fastened to the armature and with its two ends is displaceably and pivotably supported, the parts of the switching device can be assembled by simply plugging one into the other.
  • the armature can be moved on the contact carrier in a space-saving manner.
  • the spring lying between the contact carrier and the displaceable armature ensures that the switching device functions independently of the position and that the two ends of the transmission lever rest constantly on the supporting surfaces supporting them under spring pressure.
  • the central region of the transmission lever which is rotatably mounted on the armature, is advantageously guided in a guide and stop piece that is movable with the contact carrier in the stroke direction of the armature. Because the central region of the transmission lever is not guided in the housing, but rather in a guide and stop piece that is movable with the contact carrier, larger tolerances are required between the contact carrier and the housing, which require less complicated assembly.
  • the guide and stop piece can consist of an angled piece provided with a guide and stop slot and fastened to the contact carrier by means of a snap connection.
  • the end of the guide and stop slot facing away from the contact carrier serves as a stop for the anchor and prevents the anchor from falling out of the contact carrier during assembly or disassembly.
  • An angle piece that can be fastened by means of a snap connection enables simple automatic assembly.
  • the translation lever can be provided at least at one end with a rounded shoe which can be pivoted and displaced on its bearing surface. Since the transmission lever with its two ends only has to be pivotally and slidably supported, it is advantageous to release this slidable and pivotable support with a shoe.
  • the shoe advantageously consists of plastic, the plastic having good sliding properties on the support surface.
  • the shoe can be fastened on the transmission lever by means of a snap connection, as a result of which the shoe can be easily assembled.
  • a translation lever is advantageously arranged on each of the two sides of the armature facing away from one another, the armature being displaceably guided in the contact carrier. This space-saving arrangement prevents the armature and the contact carrier from jamming during the lifting movements.
  • the two transmission levers advantageously engage at two diagonally lying points on the contact carrier. This measure in turn serves to prevent jamming of the contact carrier during the switching movements.
  • FIG. 1 shows the elevation of an electromagnetic switching device, which is called a contactor in this example, in a schematic representation, partly in section.
  • Fixed contact pieces 2 which are also clearly visible in FIG. 2, are fastened in the housing 1.
  • 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 8 in a slot 9, as can be seen in FIG.
  • two springs 10 are inserted, which press the armature 7 away from the contact carrier 3 in the stroke direction of the armature 7.
  • a transmission 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 there are support surfaces for the ends 12, 13 of the transmission lever 11 which pivot and shift on these support surfaces during switching movements.
  • the contact surfaces are made of plastic, but can also be made of a suitable metal.
  • the transmission lever 11 is rotatably supported with its central region on a bolt 14 attached to the armature 7. The translation between the switching path of the contact carrier 3 and the stroke of the armature 7 is given by the ratio of the lever arms.
  • the distance between the support points of the two ends 12, 13 of the transmission lever 11 and, on the other hand, the distance between the bolt 14 on the armature 7 and the stationary support point of the end 12 of the transmission lever 11 must be taken into account.
  • the armature 7 takes along the central region of the transmission lever 11, which is fixed at one end 12, via the bolt 14.
  • the other end 13 of the translation lever 11 presses the contact carrier 3 with the movable contact pieces 4 into the switched-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 thereby compressed.
  • the contact carrier 3 and the attached movable contact pieces 4 are brought unhindered into the switched-off position by the return spring 15.
  • the springs 10 push the armature 7 away from the contact carrier 3, so that the two ends 12, 13 of the translation lever 11 mounted on the armature 7 and their contact surfaces on the contact carrier 3 as well as on the housing 1 remain in contact and the armature 7 its intended Position in the contact carrier 3 assumes.
  • the contact carrier 3, which is loaded by the return spring 15, is supported in the switched-off position of the contactor by an existing stop on the housing 1.
  • FIGS. 3 and 4 show the elevation or the side view of the guide and stop piece 16 consisting of an angle piece. This plastic angle piece is provided at one end with a fork-shaped part which is fastened by snap connection in a U-shaped groove on the contact carrier 3. This type of attachment is particularly suitable for automatic assembly.
  • FIGS. 5 and 6 show the elevation or the side elevation of a shoe 17.
  • the shoe 17 is fastened by snap connection to the end 12, 13 of the flat transmission lever 11.
  • the shoe 17 has two expandable side parts which are closed off with hooks and can be seen in FIG.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Relay Circuits (AREA)
  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)
  • Keying Circuit Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Control Of Electric Motors In General (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (8)

  1. Appareillage de commutation électromagnétique en particulier disjoncteur comportant un aimant de commutation logé dans un boîtier (1), avec des éléments de contact (2) fixes, solidaires du boîtier et qui peuvent être mis en prise ou hors prise avec ceux-ci par l'induit (7) de l'électro-aimant de commutation, des pièces de contact (4), mobiles portées par un porte-contact (3) et au moins un levier de transmission (11) agissant entre l'induit (7) de l'électro-aimant de commutation et le porte-contact (3) guidé de manière coulissante dans le boîtier de l'appareillage de commutation, dans la direction du mouvement de l'induit, appareillage caractérisé en ce que levier de transmission (11) s'appuie en étant susceptible de pivoter et coulisser par l'une de ses extrémités (12) contre le boîtier fixe (1) et par son autre extrémité (13) contre le porte-contact (3), au moins dans la direction de mouvement de l'induit (7), dans le plan de mouvement du levier de transmission (11), et en ce que la zone médiane du levier de transmission (11) est montée en étant susceptible de tourner sur l'induit (7) et est guidée dans la direction de poussée de l'induit (7) et en ce qu'entre le porte-contact 3 et l'induit (7) guidé de manière coulissante sur celui-ci dans la direction de poussée il y a au moins un ressort (10) qui écarte l'induit (7) du porte-contact (3).
  2. Appareillage électromagnétique de commutation selon la revendication 1, caractérisé en ce que la partie médiane du levier de transmission (11) montée pivotante sur l'induit (7) est guidée dans la direction de poussée de l'induit (7) par une pièce de guidage et d'appui (16) entraînée en même temps que le porte-contact (3).
  3. Appareillage électromagnétique de commutation selon la revendication 2, caractérisé en ce que la pièce de guidage et d'appui (16) se compose d'une pièce coudée fixée par une liaison à encliquetage sur le porte-contact (3) comportant une fente de guidage et d'appui.
  4. Appareillage électromagnétique de commutation selon la revendication 1, caractérisé en ce que le levier de transmission (11) est muni au moins à une extrémité (12, 13) d'un patin (17) arrondi, coulissant, et qui peut basculer sur sa surface d'appui.
  5. Appareillage électromagnétique de commutation selon la revendication 4, caractérisé en ce que le patin (17) est en matière plastique.
  6. Appareillage électromagnétique de commutation selon la revendication 5, caractérisé en ce que le patin (17) est fixé sur le levier de transmission (11) par une liaison à encliquetage.
  7. Appareillage électromagnétique de commutation selon l'une des revendications 1 à 6, caractérisé en ce que sur deux côtés opposés de l'induit (7), il y a chaque fois un levier de transmission (11), l'induit (7) étant guidé de manière coulissante dans le porte-contact (3).
  8. Appareillage électromagnétique de commutation selon la revendication 7, caractérisé en ce que les deux leviers de transmission (11) agissent en deux points (18, 19) situés sur deux diagonales du porte-contact (3).
EP91119117A 1991-05-29 1991-11-11 Appareillage interrupteur électromagnétique, en particulier contacteur Expired - Lifetime EP0515729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1585/91A CH682112A5 (fr) 1991-05-29 1991-05-29
CH1585/91 1991-05-29

Publications (3)

Publication Number Publication Date
EP0515729A2 EP0515729A2 (fr) 1992-12-02
EP0515729A3 EP0515729A3 (en) 1992-12-30
EP0515729B1 true EP0515729B1 (fr) 1995-02-15

Family

ID=4213853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91119117A Expired - Lifetime EP0515729B1 (fr) 1991-05-29 1991-11-11 Appareillage interrupteur électromagnétique, en particulier contacteur

Country Status (7)

Country Link
EP (1) EP0515729B1 (fr)
AT (1) ATE118646T1 (fr)
CH (1) CH682112A5 (fr)
DE (1) DE59104629D1 (fr)
DK (1) DK0515729T3 (fr)
ES (1) ES2068467T3 (fr)
GR (1) GR3015355T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108091522B (zh) * 2017-12-12 2019-08-23 北京中车赛德铁道电气科技有限公司 一种大电流直流接触器
CN114360940B (zh) * 2022-03-15 2022-12-23 昆山市正耀电子科技有限公司 一种无磁驱动自锁型自清洁继电器及通断锁止方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1162449B (de) * 1956-10-26 1964-02-06 Ckd Modrany Narodni Podnik Betaetigungsmagnet, insbesondere fuer Schaltschuetze
DE1237667B (de) * 1961-07-06 1967-03-30 Calor Emag Elek Zitaets Ag Elektromagnetisch betaetigtes Schaltgeraet, insbesondere Schuetz, bei dem die Zugkraft des Magneten ueber eine Kurvenbahn uebertagen wird
DE2142464C3 (de) * 1971-08-25 1974-11-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anordnung zur gelenkigen Verbindung des Ankers eines elektromagnetischen Schaltgerätes mit dem Kontaktbrückenträger
US4616202A (en) * 1984-11-20 1986-10-07 Mitsubishi Denki Kabushiki Kaisha Electromagnetic contactor

Also Published As

Publication number Publication date
ES2068467T3 (es) 1995-04-16
ATE118646T1 (de) 1995-03-15
EP0515729A3 (en) 1992-12-30
CH682112A5 (fr) 1993-07-15
DE59104629D1 (de) 1995-03-23
DK0515729T3 (da) 1995-06-06
EP0515729A2 (fr) 1992-12-02
GR3015355T3 (en) 1995-06-30

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