EP0039758A1 - Dispositif électromagnétique de contrôle pour télécontrôle d'interrupteurs électriques et appareils analogues - Google Patents

Dispositif électromagnétique de contrôle pour télécontrôle d'interrupteurs électriques et appareils analogues Download PDF

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Publication number
EP0039758A1
EP0039758A1 EP81100457A EP81100457A EP0039758A1 EP 0039758 A1 EP0039758 A1 EP 0039758A1 EP 81100457 A EP81100457 A EP 81100457A EP 81100457 A EP81100457 A EP 81100457A EP 0039758 A1 EP0039758 A1 EP 0039758A1
Authority
EP
European Patent Office
Prior art keywords
lever
control
electromagnets
switch
cores
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.)
Granted
Application number
EP81100457A
Other languages
German (de)
English (en)
Other versions
EP0039758B1 (fr
Inventor
Nazario Sauro Zanchi
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.)
Magrini Galileo SpA
Original Assignee
Magrini Galileo SpA
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 Magrini Galileo SpA filed Critical Magrini Galileo SpA
Publication of EP0039758A1 publication Critical patent/EP0039758A1/fr
Application granted granted Critical
Publication of EP0039758B1 publication Critical patent/EP0039758B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • 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
    • H01H71/66—Power reset mechanisms
    • H01H2071/665—Power reset mechanisms the reset mechanism operating directly on the normal manual operator, e.g. electromagnet pushes manual release lever back into "ON" position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/227—Interlocked hand- and power-operating mechanisms
    • 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

Definitions

  • This invention relates to an electromagnetic device for remotely controlling electric switches, contactors and the like, and in particular low voltage switches of the boxed design type.
  • this invention sets out to provide an electromagnetic control device of limited bulk, which can be attached and removed with great ease, without requiring additional work on the apparatus
  • the device according to this invention allows manual operation on the field with the exclusion or overriding,at the same time,of the remote electric operation capability and with mechanical monitoring of the on and off positions, as well as of the position of automatic operation of the switch.
  • the device of this invention is of an extremely simple construction, and at the same time capable of ensuring, within much reduced bulk dimensions, a high operation efficiency, with consequent economical and practical advantages over other known devices.
  • control device of this invention affords direct application of the operating power to the switch without involving the use of transmissions or linkages of a special design or the storing of energy.
  • control device of this invention is a quick action one allowing tripping times below 100 ms, while retaining small dimensions, for the purposes of emergency change-over in operation.
  • a device according to the invention which, when it is desired to gain access to the inner parts of the control by removing the cover, can cut out or override the remote electric operation of the control, with the.attendant advantage of providing a control device which is simple and.compact, of a limited cost which does not affect appreciably the cost of the apparatus whereto it is incorporated, thus allowing an easier and more economical application of the device to the remote control of non-monitored places or automatisms, and where emergency change-over is needed.
  • an electromagnetic device for remotely controlling electric switches, contactors, and the like, utilizing partly movable and partly fixed internal core electromagnets, characterized in that it comprises at least two electromagnets which are arranged with their longitudinal axes parallel to each other and with the respective cores at opposite locations, at least one of said electromagnets being intended for the closing operation and at least another for that of opening the switch, the movable cores of said electromagnets being interconnected mechanically by transmission means which, by virtue of the opposite location of the cores, produce the away movement of two cores in one electromagnet while the cores of the other electromagnet-are moved toward each other, said transmission means being in engagement with the control lever or toggle of said switch, there being also provided circuit means controlled by said transmission means to automatically control the current supply to one of the electromagnets while the other is operative, said circuit means being in communication with the remote control station.
  • the device is so constructed as to be'easily and readily applicable and removable to and from the apparatus to which it is to be applied, without requiring modifications of the latter and above all as easily and readily adaptable to the various dimensions and power of the switch to be operated., relatively to the energy required for operating the switch.
  • the electromagnetic control according to this invention comprises a box-like.body 1, which is open at the rear and closed at the opposite end by a plate 6, wherewith a cover 2 is associated which is secured to the plate 6 as by three screws 3,4,5 ( Figures 3-4); on the load-bearing plate 6, and specifically on its side facing inwardly with respect to the box-like body, there are arranged two electromagnets 7 and 8, whereof, for example, the one indicated at 7 is intended for closing and the other for opening and re-cocking (i.e. resetting to the rearmost or initial position of the related movable core) the switch after each automatic operation thereof.
  • Each electromagnet comprises a magnetic circuit 9, and respectively 10, of iron and of substantially C-like shape, including respectively the fixed cores (or keepers) 11 and 12 and movable cores 13 and 14; all such cores are mounted inside the respective : energization coils 15 and 16, which are so dimensioned as to supply the magnetic energy required for operating the switch in the on and off modes, respectively.
  • the coils 15 and 16 are structurally identical to each other and comprise an electric circuit wound on tubular metal supports 17, and respectively 18, at the opposite ends whereof there are arranged insulating clamping ring nuts 19-2o and 21-22;
  • the ring nuts 20 and 22 comprise cylindrical bodies which are butt inserted into the respective tubular support or holder of the electric circuit and have a shoulder abutting against the cylindrical rim of the magnetic circuit thereby,with the cylindrical portion of the ring nut inserted into the cylindrical body of the electric circuit , a perfect centering of one end of the coil is achieved to the axis of the respective magnetic circuit.
  • the opposite ring nuts 19-21 comprise cylindrical bodies having a frusto-conical flared portion which protrudes outwardly from the tubular supports 17-18 such as to allow the assembling and fastening of the coil ends to the magnetic circuits 9-10 with the interposition of an 0-ring 23, and respectively 24, and the clamping thereof between the arcuate portion of the respective magnetic circuit, at the fixed core 11, and respectively 12, and the conical surface of the ring nut.
  • the clamping is effected through the screws, respectively 25 and 26, which are also used for securing the fixed cores to the respective magnetic circuit.
  • the C-like magnetic circuits 9 and 10 are attached to the supporting plate 6 through screws not shown in the drawings.
  • the fixed keepers 11 and 12 have a cylindrical shape, and are terminated in a truncated cone, whilst the movable keepers 13 and 14 terminate in a conical recess adapted for accommodating the respective truncated cones of the fixed cores 11 and 12, whereon said movable cores end their strokes by striking them in a dampened mode as allowed by the respective elastic pads 27 and 28, formed from rubber or any other similar material.
  • the arcuate ends of the magnetic circuits form the mounts whereby the control is attached to the switch.
  • the attachment is made by means of two screws 33 and 34 which are mounted on the ends 30 and 31 of the magnetic circuits, whereas the other two ends 29 and 32 are simply brought to rest thereon.
  • the two movable cores 13 and 14. are rigidly linked to each other through a plate-like slide or bar 35 having its opposite ends folded to a right angle in opposite directions and connected, through the screws 36-37, to the head of the movable cores.
  • the slide 35 has a quadrangular slit 38, to the opposite edges whereof two reinforcing snugs 39-40 ( Figure 4) are rigidly connected between which snugs the control lever 41 of the switch to be operated is inserted.
  • the transmission slide or bar 35 is thus enabled to travel parallel to the axes of the coils, through the unobstructed space left between the close-together coils and in a perpendicular plane to the load-bearing plate 6..
  • Said lever 43 is, moreover, formed with two widening portions 43a and 43b carrying two opposite adjusting screws 47 and 48, wherebetween is inserted the lever 49 for operating an electric end-of-travel change-over switch 50, attached to the load-bearing plate 6.
  • the change-over switch 50 is provided with an insulating covering cap 51, adapted to prevent the accidental establishment of an electric contact by the operator upon removal of the cover 2.
  • a terminal board 52 On one side of the change-over switch 50, there is provided a terminal board 52 whereto are connected the necessary internal and external electric connections for supplying the coils as well as the connections leading to the pushbuttons 74 and 75, which connections are shown diagramatically in Figure 6.
  • Said pushbuttons 74 and 75 are normally remotely located with respect to the switch to be changed-over, and may be of any desired type, including a type responsive to the magnitude or occurrence of certain parameters.
  • a manual actuating device for the control and accordingly the switch itself, and a safety device effective to cut off the electric supply to the control either during the manual operation and the inspection of the control.
  • a lever 53 ( Figures 3',4,5) is provided which is pivoted to the pin 54 carried by two supports 55 and 56 attached to the plate 6 by means of screws or rivets, which lever engages,with its yoke-like end 57 and the pin 58 rigid therewith, in the groove 59 of the slide 35.
  • the lever 53 is terminated at-its other end in a hole 60, wherethrough a manual actuation rod 61 is inserted for manually operating the control, and accordingly the switch, on the spot.
  • an insulating sector 62 which serves the function of indicating,by,means of the letters I and 0, visible through the window 63 of the cover 2 ( Figure 3),the switch on and off positions, respectively.
  • the automatic cut-in position is indicated by the letters I and 0 becoming visible, as explained hereinafter.
  • the sector 62 can slide axially on the pin 54, and is held in the position shown in Figure 5 by means of the spring 64, thereby the two holes, respectively 60 in the lever 54 and 65 in the sector 62, cannot remain aligned and do not allow the rod 61 to be inserted.
  • the end 66 of the sector 62 contacts the lever 67 of a microswitch 68 attached to the plate 6 by means of the metal support or holder 69 with two screws; the microswitch 68 is covered by an insulating cap intended to prevent accidental electric contacts by the operator upon removal of the cover 2.
  • the two electromagnets 7 and 8 are arranged for DC operation; the device may also be fed with AC current by including rectifying or Graetz bridges 72 and 73 ( Figure 3), one for each coil, which will supply to said coils a rectified direct current adequate for actuating the control. :
  • the control device described hereinabove operates as follows. To provide the closure ( Figure 6), with the end-of-travel change-over switch 50 and microswitch 68 already preset for supplying the closure coil 15, the pushbutton 74 is brought to close, thereby the coil 15 is energized which causes a quick and effective attraction of the movable core 13 toward the fixed core 11. That action is transmitted through the slide 35 and snug 40 to the lever 41 of the switch, which is then moved upwards to produce a fast (less than 100 ms) closure of the switch.. The movable core 13 ends its travel in abutment against the fixed core 11 through its dampening pad or bumper 27.
  • the slide 35 operates, through the yoke 45-46 and lever or lug 44,the lever 49 of the end-of-travel or limit switch 50,to thus cut off the power supply to the coil 15 and switch the power supply over to the opening coil 16.
  • the movable core 13, being made rigid to the movable core 14 through the slide 35, during its movement entrains the core 14 along and moves it away from the fixed core 12..
  • the movable core 13 also entrains, through the slide 35, the lever 53 which, by pivoting about the pin 54, actuates the indicator 62, which brings the character I into view through the window 63 cut through the cover 2.
  • the lever 43 is operated of the travel limit switch 50 to cut off the power supply to the coil 16 and switch the supply over to the closing coil 15.
  • the movable core 14 entrains through the slide 35 the lever 53 as well which, again by pivoting about the pin 54, actuates the indicator 62, which brings the character O into view, also through the window 63 cut through the cover 2.
  • the lever 61 is introduced, after displacing the sector 62 against the bias of the spring 64 ( Figure 5), into the two holes 60 and 65; thus, it becomes possible,.by moving the lever 61 downwards or upwards, to close and open the switch, inasmuch as that action is transmitted (through the lever 53 and pin 58) to the slide 35, and consequently to the actutaing lever 41 of the switch.
  • This operation allows the pin spring 71 to apply its action to the lever-70 which, by rotation, acts at all times on the lever 67 of the microswitch 68, to cut off the electric supply to the control and prevents, in this case too, any inadvertent remotely controlled electric operations while the switch is being inspected.
  • more than two may be provided with more than one transmission bar.
  • suitable transmission links may be provided, such as racks coupled with pinion gear trains, or articulated lever systems.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP81100457A 1980-05-08 1981-01-22 Dispositif électromagnétique de contrôle pour télécontrôle d'interrupteurs électriques et appareils analogues Expired EP0039758B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21905/80A IT1131160B (it) 1980-05-08 1980-05-08 Comando elettromagnetico particolarmente adatto per la manovra a distanza di interruttori elettrici di tipo scatalato,aperto e simili
IT2190580 1980-05-08

Publications (2)

Publication Number Publication Date
EP0039758A1 true EP0039758A1 (fr) 1981-11-18
EP0039758B1 EP0039758B1 (fr) 1985-06-05

Family

ID=11188528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100457A Expired EP0039758B1 (fr) 1980-05-08 1981-01-22 Dispositif électromagnétique de contrôle pour télécontrôle d'interrupteurs électriques et appareils analogues

Country Status (4)

Country Link
EP (1) EP0039758B1 (fr)
DE (1) DE3170787D1 (fr)
ES (1) ES499789A0 (fr)
IT (1) IT1131160B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581242A1 (fr) * 1985-04-24 1986-10-31 Telemecanique Electrique Dispositif de commande electrique adaptable a un dispositif de commutation a deux etats
FR2581238A1 (fr) * 1985-04-24 1986-10-31 Telemecanique Electrique Appareil de commande electrique a rideau coulissant
FR2609574A1 (fr) * 1987-01-09 1988-07-15 Arc Sa Support de dispositif de rearmement de disjoncteur
WO1996038852A1 (fr) * 1995-04-18 1996-12-05 Square D Company Dispositif de rearmement commande par electro-aimant pourvu d'un circuit activateur de protection
FR2840101A1 (fr) * 2002-05-21 2003-11-28 Socomec Sa Module de commande motorise pour appareil de coupure electrique et appareil de coupure electrique equipe d'un tel module
CN103475088A (zh) * 2013-09-25 2013-12-25 浙江寺崎电气有限公司 一种双电源切换开关
CN105261494A (zh) * 2015-07-25 2016-01-20 河北工业大学 可用于三电源的电动转换操作机构
CN113205970A (zh) * 2021-03-18 2021-08-03 茂物久泽(南京)智能科技有限公司 一种远程控制的安全电源开关

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069518A (en) * 1959-12-29 1962-12-18 Controllix Corp Switch operating mechanism
US3211955A (en) * 1960-03-29 1965-10-12 Westinghouse Electric Corp Circuit interrupting device
US3435390A (en) * 1967-10-26 1969-03-25 Automatic Switch Co Actuator having releasable latch
US3893050A (en) * 1974-05-15 1975-07-01 Westinghouse Electric Corp Solenoid actuated circuit breaker operator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069518A (en) * 1959-12-29 1962-12-18 Controllix Corp Switch operating mechanism
US3211955A (en) * 1960-03-29 1965-10-12 Westinghouse Electric Corp Circuit interrupting device
US3435390A (en) * 1967-10-26 1969-03-25 Automatic Switch Co Actuator having releasable latch
US3893050A (en) * 1974-05-15 1975-07-01 Westinghouse Electric Corp Solenoid actuated circuit breaker operator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581242A1 (fr) * 1985-04-24 1986-10-31 Telemecanique Electrique Dispositif de commande electrique adaptable a un dispositif de commutation a deux etats
FR2581238A1 (fr) * 1985-04-24 1986-10-31 Telemecanique Electrique Appareil de commande electrique a rideau coulissant
EP0200617A1 (fr) * 1985-04-24 1986-11-05 Telemecanique Dispositif de commande électrique adaptable à un dispositif de commutation à deux états
FR2609574A1 (fr) * 1987-01-09 1988-07-15 Arc Sa Support de dispositif de rearmement de disjoncteur
WO1996038852A1 (fr) * 1995-04-18 1996-12-05 Square D Company Dispositif de rearmement commande par electro-aimant pourvu d'un circuit activateur de protection
AU706272B2 (en) * 1995-04-18 1999-06-10 Square D Company Solenoid operated remote resetting device with a protective activation circuit
FR2840101A1 (fr) * 2002-05-21 2003-11-28 Socomec Sa Module de commande motorise pour appareil de coupure electrique et appareil de coupure electrique equipe d'un tel module
CN103475088A (zh) * 2013-09-25 2013-12-25 浙江寺崎电气有限公司 一种双电源切换开关
CN103475088B (zh) * 2013-09-25 2015-09-09 浙江寺崎电气有限公司 一种双电源切换开关
CN105261494A (zh) * 2015-07-25 2016-01-20 河北工业大学 可用于三电源的电动转换操作机构
CN113205970A (zh) * 2021-03-18 2021-08-03 茂物久泽(南京)智能科技有限公司 一种远程控制的安全电源开关

Also Published As

Publication number Publication date
IT1131160B (it) 1986-06-18
ES8202200A1 (es) 1982-02-01
EP0039758B1 (fr) 1985-06-05
IT8021905A0 (it) 1980-05-08
DE3170787D1 (en) 1985-07-11
ES499789A0 (es) 1982-02-01

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