EP1069585A2 - Elektromagnetischer Schaltmechanismus mit manuell betätigter Rückstellvorrichtung - Google Patents

Elektromagnetischer Schaltmechanismus mit manuell betätigter Rückstellvorrichtung Download PDF

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Publication number
EP1069585A2
EP1069585A2 EP00402024A EP00402024A EP1069585A2 EP 1069585 A2 EP1069585 A2 EP 1069585A2 EP 00402024 A EP00402024 A EP 00402024A EP 00402024 A EP00402024 A EP 00402024A EP 1069585 A2 EP1069585 A2 EP 1069585A2
Authority
EP
European Patent Office
Prior art keywords
rod
cocking
movable
contact
arming
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
EP00402024A
Other languages
English (en)
French (fr)
Other versions
EP1069585B1 (de
EP1069585A3 (de
Inventor
Jorge Gonzales Ballvey
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.)
Baco Constructions Electriques SA
Original Assignee
Baco Constructions Electriques 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 Baco Constructions Electriques SA filed Critical Baco Constructions Electriques SA
Publication of EP1069585A2 publication Critical patent/EP1069585A2/de
Publication of EP1069585A3 publication Critical patent/EP1069585A3/de
Application granted granted Critical
Publication of EP1069585B1 publication Critical patent/EP1069585B1/de
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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/62—Manual reset mechanisms which may be also used for manual release with means for preventing resetting while abnormal condition persists, e.g. loose handle arrangement

Definitions

  • the present invention relates to a switch mechanism electromagnetic with manual reset, the triggering of which is controlled by a control voltage associated with an auxiliary circuit which, by lowering below a predetermined threshold, causes automatic disarming and switch continuously until the voltage conditions are restored initials and that the mechanism be reset manually.
  • relays which open the contacts of the main circuit in the event of a voltage drop across them below a certain threshold; it is very often a load located on the conductor of power which directly controls the relay. These relays are activated manually by means of a push button which activates directly the command responsible for the movement of the contacts which causes said relay to self-engage.
  • This type of assembly has two main disadvantages: on the one hand, in the event of switching of currents high, it consumes a lot of energy since it must, through a coil, provide the thrust necessary for the correct functioning of the contacts and, on the other hand, it is bulky and not very compact.
  • the engagement means include a inclined ramp associated with the base and arranged in the path of the rod of armament to mechanically impart to this rod a bending when it is manually pushed into the engaged position.
  • the stem of armament engages, by its lip with the mobile assembly associated with the movable contact and pushes the movable element of the electromagnetic actuator in arming position.
  • the cocking rod is released to return to arming position, it is kept flexed by the movable element of the electromagnetic actuator energized so as to remain engaged with the moving crew associated with the moving contact and thereby pressing the moving contact against fixed contact. This configuration is retained as long as the actuator electromagnetic is energized.
  • this actuator But as soon as the terminal voltage of this actuator drops below the predetermined threshold, the movable element of this actuator is resiliently returned to its disarming position to cause the mobile equipment associated with the mobile contact to stall opposite the hooking lip of the cocking rod. The mobile contact then moves away spontaneously, under the effect of the elastic return means which are associated, fixed contact.
  • the object of the invention is to design a mechanism electromagnetic switch with manual reset, the means of which have a more structural and functional mechanics reliable than that provided for in existing mechanisms.
  • the flexibility of the cocking rod is also a source difficulty: the rod must be flexible enough not to offer too high resistance to sinking which could wear out the prematurely inclined ramp or its own contact surface with this ramp but must be strong enough mechanically not to rupture prematurely in particular by fatigue wear resulting from these repeated bending.
  • the possible wear of the rod and / or the shoulder of the pendulum is thus automatically caught by the stroke of the cocking rod which is not limited.
  • the cocking rod not being deformed, it can be made of a material strong and rigid enough to resist suitably and sustainably to the stresses to which it is subjected during the arming operation.
  • an electromagnetic switch mechanism with manual reset comprises two pairs of contacts 4, 11 closing or opening an electrical circuit on which the mechanism switch is mounted.
  • a fixed contact 4 which is integral with a base 2 associated with the frame of the entire switch mechanism, and a movable contact 11 carried by a support 20 in form of angle iron, one wing of which is itself fixedly mounted on one of the ends of an elastic blade 3 made of sheet steel, the other end of which is fixed based on 2.
  • Each of the two movable contacts 11 is thus movable between a position in which it is in contact with the fixed contact 4 to which it is associated and an open position in which it is moved away from this fixed contact and to which it is recalled elastically under the effect of the inherent elasticity of the arm 3 correspondent.
  • the other wing of the support angle 20 is connected to the corresponding wing of the other support angle 20 which is associated with the other movable contact 11, by a cross member 15.
  • This cross member 15 which thus extends between the two angles of support of the movable contacts 11, forms a pin embodying an axis of pivoting, as will be better explained later.
  • the unitary assembly formed by the two angles 20 associated with the two movable contacts 11 and the cross member 15 which joins these two angles thus forms a moving assembly 28 associated with the moving contacts 11.
  • Arming means are provided to place and maintain the movable contacts 11 in their closed position, against the force of elastic return exerted by the elastically flexible arms 3.
  • arming means comprise an arming rod 8 which is sliding mount on base 2 along an axis substantially perpendicular to that defined by the cross member 15.
  • This cocking rod 8 has one end upper adjacent to the cross member 15, which is provided with a hooking lip 17 suitable for hooking the mobile assembly 20 associated with the mobile contacts 11.
  • a elastic return means 14 recalls the arming rod 8 in a position in which, when the lip 17 of this rod is engaged with the moving element 28 associated with the moving contacts 11, the moving contacts 11 are pressed against the fixed contacts 4 in their closed position at against the elastic return force exerted by the arms 3.
  • the elastic return means of the cocking rod 8 is in this case constituted by a helical spring 14 which surrounds the arming rod 8 and which is supported, on the one hand against the back of the base 2, opposite the fixed contacts 4, and on the other hand against a manual pusher 5 attached to the lower end of the rod 8.
  • the back of the base 2 is further provided with a sheath 29 which hides the spring 14 and into which the manual pusher 8 can sink without game, or with a reduced game.
  • the arming means finally include latching means which ensure the attachment of the lip 17 of the cocking rod 8 with the crew movable 28 associated with movable contacts 11 when the arming rod 8 is thrust, by means of the manual pusher 5 associated therewith, in a position engagement against the return force exerted by the spring 14.
  • These engagement means comprise a pendulum or trigger 12 which is mounted on the journal formed by the cross member 15 of the moving assembly 28 associated with the movable contacts 11 to pivot between an arming position and a disarming position.
  • This pendulum 12 has a shoulder 22 which is able to cooperate with the end 23 of the cocking rod 8 so that the latter, when it is manually pushed into the locked position, forces the pendulum 12 to pivot in its cocking position.
  • the balance 12 also includes a lip 16 which is arranged to take hold with the lip 17 of the cocking rod 8 when the balance is in arming position. Thus, by its lip 16, the balance 12 intervenes in the attachment of the moving assembly 28 associated with the moving contacts 11 to the rod 8.
  • the balance 12 is provided with two parallel and spaced apart arms forming a fork having the function of a lever arm, as will be better explained later.
  • the switch mechanism also includes means for automatic disarming capable of causing the crew to stall mobile 28 associated with mobile contacts 11 vis-à-vis the hooking lip 17 of the arming rod 8 and, consequently, the return of the movable contacts 11 in their open position under the elastic effect of the arms 3.
  • These means of disarming include an electromagnetic actuator in the event of current failure 21.
  • This actuator known in itself, will not be described in all its details. It suffices here to specify that this actuator comprises a housing or receptacle 1 which contains a solenoid 35 of axis A comprising a winding 6 surrounded by a ferromagnetic armature 7 which connects to a fixed ferromagnetic core 13 partially extending inside the winding 6 along the axis A.
  • a core movable ferromagnetic 9 partially extends in the air gap 36 of the solenoid 35 along the axis A, in the extension of the fixed core 13, and can slide at the interior of this solenoid along the axis A between on the one hand a position of disarming in which it is called back in the opposite direction from the fixed core 13 by an associated elastic return means 10, when the voltage across the terminals of the solenoid 35 drops below a predetermined threshold, and on the other hand a arming position close to the fixed core 13, in which it is maintained against the elastic return means 10 associated with it under the effect of the magnetic field generated by the solenoid 35 when it is placed under a voltage higher than said predetermined threshold.
  • the movable ferromagnetic core 9 is presented under the shape of a bar, part of which is inserted in the air gap 36 of the solenoid 35, and the remaining part of which projects from the housing 1 and has two shoulders 25, 26 defining between them a groove 27 in which the two are engaged arm 24 forming a lever arm of the balance wheel 12.
  • the elastic return means of this actuating bar 9 is constituted by a helical spring 10 surrounding this bar and bearing on the one hand against the housing 1 of the actuator electromagnetic 21 and on the other hand against the corresponding shoulder 25 of the bar 9.
  • the axis A of the actuating bar 9 is substantially perpendicular to the cocking rod 8, as well as to the pin 15 embodying the axis pivoting of the balance wheel 12. This arrangement makes it possible to obtain a footprint as small as possible.
  • the fork 24 of the balance 12 is thus coupled to the movable bar 9 of such that the arming and disarming positions of this bar mobile 9 and balance 12 correspond.
  • the arming rod 8 is manually pressed in. against the return force of the spring 14 which comes into contact, by its end 23, against the shoulder 22 of the balance 12, to force, extending its race towards its latching position, the balance 12 to pivot towards its arming position.
  • the pendulum 12 drives, thanks to its fork 24, the actuating bar 9 to its position arming, against the elastic return force of the spring 10.
  • the lip 16 of the pendulum 12 engages with the lip 17 of the cocking rod 8 in a tilting movement.
  • the cocking rod 8 can then be released. Two scenarios are then possible.
  • the release of the cocking rod 8 is accompanied by the return of actuating bar 9 towards its disarming position under the effect of the elastic return force of the spring 10.
  • the actuating bar 9 pushes the fork 24 of the pendulum 12 and forces it to return to its disarming position in which the attachment of the lip 16 of the balance 12 and the lip 17 of the rod 8 is broken.
  • the cocking rod 8 can not drive the moving element 28 and the moving contacts 11 in the closed position and these the latter therefore remain in the open position in which they are kept by the elastic return force exerted by the arms 3.
  • a third case should be considered in the event that the switch mechanism, after being armed manually, is in armed configuration, the movable contacts 11 being in the closed position and the lip 16 of pendulum 12 engaged with lip 17 of cocking rod 8, and where the voltage across the solenoid 35 of the electromagnetic actuator 21 drops below the predetermined threshold.
  • the bar 9 is recalled by the spring 10 in its disarming position and drives in the corresponding position the pendulum 12. In this position disarmament, the lip 16 of the balance 12 emerges from its engagement with the lip 17 of the cocking rod 8 and thereby frees the moving assembly 28 and the mobile contacts 11 which return spontaneously, under the effect of the force of elastic return exerted by the arms 3, in their open position.

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electromagnets (AREA)
  • Manipulator (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Transmission Devices (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Air Bags (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
EP00402024A 1999-07-14 2000-07-13 Elektromagnetischer Schaltmechanismus mit manuell betätigter Rückstellvorrichtung Expired - Lifetime EP1069585B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES009901875U ES1043678Y (es) 1999-07-14 1999-07-14 Mecanismo interruptor electromagnetico con rearme manual.
ES9901875U 1999-07-14

Publications (3)

Publication Number Publication Date
EP1069585A2 true EP1069585A2 (de) 2001-01-17
EP1069585A3 EP1069585A3 (de) 2002-09-11
EP1069585B1 EP1069585B1 (de) 2006-04-05

Family

ID=8309672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00402024A Expired - Lifetime EP1069585B1 (de) 1999-07-14 2000-07-13 Elektromagnetischer Schaltmechanismus mit manuell betätigter Rückstellvorrichtung

Country Status (4)

Country Link
EP (1) EP1069585B1 (de)
AT (1) ATE322738T1 (de)
DE (1) DE60027090T2 (de)
ES (2) ES1043678Y (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2426691A1 (de) * 2010-09-06 2012-03-07 ABB Technology AG Mechanische Übersteuerungsvorrichtung
EP3926655A4 (de) * 2019-04-16 2022-11-23 Tianjin JMT Electric Equipment Co., Ltd Intelligenter schutzschalter mit automatischem auslösen und ansprechen bei einem ausfall

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567456A (en) * 1983-06-13 1986-01-28 Technology Research Corporation Resettable circuit closing device
FR2561819B1 (fr) * 1984-03-26 1987-10-30 Telemecanique Electrique Bloc additif accouplable a un disjoncteur
GB8509541D0 (en) * 1985-04-13 1985-05-15 Mk Electric Ltd Electrical devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2426691A1 (de) * 2010-09-06 2012-03-07 ABB Technology AG Mechanische Übersteuerungsvorrichtung
CN102436944A (zh) * 2010-09-06 2012-05-02 Abb技术有限公司 机械超驰设备
US8354904B2 (en) 2010-09-06 2013-01-15 Abb Technology Ag Mechanical override device
CN102436944B (zh) * 2010-09-06 2015-11-25 Abb技术有限公司 机械超驰设备
EP3926655A4 (de) * 2019-04-16 2022-11-23 Tianjin JMT Electric Equipment Co., Ltd Intelligenter schutzschalter mit automatischem auslösen und ansprechen bei einem ausfall

Also Published As

Publication number Publication date
ATE322738T1 (de) 2006-04-15
DE60027090D1 (de) 2006-05-18
ES2261168T3 (es) 2006-11-16
ES1043678Y (es) 2000-06-16
EP1069585B1 (de) 2006-04-05
ES1043678U (es) 2000-01-01
EP1069585A3 (de) 2002-09-11
DE60027090T2 (de) 2006-11-16

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