EP1069585B1 - Elektromagnetischer Schaltmechanismus mit manuell betätigter Rückstellvorrichtung - Google Patents

Elektromagnetischer Schaltmechanismus mit manuell betätigter Rückstellvorrichtung Download PDF

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Publication number
EP1069585B1
EP1069585B1 EP00402024A EP00402024A EP1069585B1 EP 1069585 B1 EP1069585 B1 EP 1069585B1 EP 00402024 A EP00402024 A EP 00402024A EP 00402024 A EP00402024 A EP 00402024A EP 1069585 B1 EP1069585 B1 EP 1069585B1
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EP
European Patent Office
Prior art keywords
movable
resetting rod
rod
lip
elastic return
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
EP00402024A
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English (en)
French (fr)
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EP1069585A2 (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
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Baco Constructions Electriques SA
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Publication of EP1069585A3 publication Critical patent/EP1069585A3/de
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Publication of EP1069585B1 publication Critical patent/EP1069585B1/de
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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 an electromagnetic switch mechanism with manual reset whose tripping is controlled by a control voltage associated with an auxiliary circuit which, by lowering below a predetermined threshold, causes the automatic and continuous disarming of the switch until the initial voltage conditions are restored and the mechanism is manually reset.
  • relays which open the contacts of the main circuit in the event of a drop in the voltage passing through them below a certain threshold; it is very often a load located on the power conductor which directly controls the relay.
  • These relays are activated manually by means of a push-button by means of which the command responsible for the movement of the contacts which causes the self-activation of said relay is directly actuated.
  • This type of mounting has two main drawbacks: on the one hand, when switching high intensities, it consumes a lot of energy because it must, through a coil, provide the thrust necessary for proper operation contacts and, on the other hand, it is bulky and not very compact.
  • the engagement means comprise an inclined ramp associated with the base and disposed on the path of the cocking rod to mechanically print this rod bending when manually pushed into the engagement position.
  • the stem armature engages, by its lip with the moving element associated with the moving contact and pushes the movable element of the electromagnetic actuator arming position.
  • the cocking rod is released to return to the cocking position, it is held flexed by the movable member of the electromagnetic actuator under tension so as to remain in engagement with the moving element associated with the moving contact and to be plated. thus the moving contact against the fixed contact. This configuration is maintained as long as the electromagnetic actuator is energized.
  • the object of the invention is to design an electromagnetic switch mechanism with manual reset, whose engagement means have a structural and functional mechanics more reliable than that provided in the existing mechanisms.
  • the flexibility of the cocking rod is also a source of difficulty: the rod must be flexible enough not to offer too much resistance to the depression that could prematurely wear down the inclined ramp or its own. contact surface with this ramp but must be sufficiently resistant mechanically to not break prematurely including fatigue wear resulting from these repeated bending.
  • the possible wear of the rod and / or the shoulder of the balance is automatically overtaken by the stroke of the rod which is not limited.
  • the cocking rod is not caused to deform, it can be made of a sufficiently strong and rigid material to withstand adequately and durably 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 switch mechanism is mounted.
  • a fixed contact 4 which is integral with a base 2 associated with the frame of the assembly of the switch mechanism, and a movable contact 11 carried by a support 20 in the form of a bracket with a wing is itself fixedly mounted on one of the ends of an elastic plate 3 of steel sheet whose other end is fixed on the base 2.
  • Each of the two movable contacts 11 is thus movable between a closed position in which it is in contact with the fixed contact 4 with which it is associated and an open position in which it is separated from this fixed contact and to which it is resiliently biased. under the effect of the own elasticity of the corresponding arm 3.
  • 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 crosspiece 15.
  • This crosspiece 15 which extends between the two support angles of the movable contacts 11, form a trunnion materializing a pivot axis, as will be better explained later.
  • the unitary assembly formed by the two comines 20 associated with the two movable contacts 11 and the crosspiece 15 which joins these two comines thus forms a mobile assembly 28 associated with the movable contacts 11.
  • Arming means are provided for placing and holding the movable contacts 11 in their closed position, against the elastic return force exerted by the elastically flexible arms 3.
  • These arming means comprise a cocking rod 8 which is slidably mounted on the base 2 along an axis substantially perpendicular to that defined by the crosspiece 15.
  • This cocking rod 8 has an upper end close to the crosspiece 15, which is provided with a latching lip 17 adapted to hang the moving element 20 associated with the movable contacts 11.
  • An elastic return means 14 recalls the cocking rod 8 in an arming position in which, when the lip 17 this rod is engaged with the moving element 28 associated with the movable contacts 11, the movable contacts 11 are pressed against the fixed contacts 4 in their closed position 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 cocking rod 8 and which is supported on the one hand against the back of the base 2, at the opposite of the fixed contacts 4, and secondly against a manual push rod 5 attached to the lower end of the cocking rod 8.
  • the back of the base 2 is further provided with a sleeve 29 which masks the spring 14 and wherein the manual pusher 8 can sink without play, or with a reduced game.
  • the arming means finally comprise locking means which ensure the attachment of the lip 17 of the cocking rod 8 with the moving element 28 associated with the movable contacts 11 when the cocking rod 8 is pushed, at the means of the associated manual pushbutton 5, in a position of engagement against the return force exerted by the spring 14.
  • These engagement means comprise a rocker or trigger 12 which is mounted on the trunnion formed by the cross member 15 of the moving element 28 associated with the movable contacts 11 to pivot between an arming position and a disarming position.
  • This rocker 12 has a shoulder 22 which is adapted to cooperate with the end 23 of the cocking rod 8 so that the latter, when manually depressed in the engaged position, forces the rocker 12 to pivot in its arming position.
  • the rocker 12 further includes a lip 16 which is arranged to take hold with the lip 17 of the cocking rod 8 when the rocker is in the cocking position.
  • the rocker 12 intervenes in the attachment of the moving element 28 associated with the movable contacts 11 to the cocking rod 8.
  • rocker 12 is provided with two parallel and spaced arms forming a fork having a lever arm function, as will be explained later.
  • the switch mechanism further comprises automatic disarming means capable of causing the stall of the moving element 28 associated with the movable contacts 11 towards the latching lip 17 of the cocking rod 8 and hence the return of the movable contacts 11 in their open position under the elastic effect of the arms 3.
  • These disarming means comprise an electromagnetic actuator with no current 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 encloses a solenoid 35 of axis A comprising a winding 6 surrounded by a ferromagnetic armature 7 which is connected to a fixed ferromagnetic core 13 extending partially to the Inside the winding 6 along the axis A.
  • a movable ferromagnetic core 9 extends partially into the gap 36 of the solenoid 35 along the axis A, in the extension of the fixed core 13, and can slide inside.
  • this solenoid along the axis A between on the one hand a disarming position in which it is biased in the opposite direction of the fixed core 13 by an associated elastic return means 10, when the voltage across the solenoid 35 drops below a predetermined threshold, and on the other hand a close arming position of the fixed core 13, in which it is held against the elastic return means 10 associated with it under the effect of the magnetic field generated by the solenoid 35 when placed under a higher voltage predetermined threshold.
  • the movable ferromagnetic core 9 is in the form of a bar part of which is inserted into the air gap 36 of the solenoid 35, and the remaining part protrudes from the housing 1 and has two shoulders 25, 26 defining between them a groove 27 in which are engaged the two arms 24 forming the lever arm of the rocker 12.
  • the elastic return means of the actuating rod 9 is constituted by a helical spring 10 surrounding the bar and supported by a part against the housing 1 of the electromagnetic actuator 21 and secondly 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 journal 15 embodying the axis of pivoting of the rocker 12. This arrangement makes it possible to obtain such a small footprint. as possible.
  • the fork 24 of the balance 12 is thus coupled to the movable bar 9 so that the arming and disarming positions of the movable bar 9 and the balance 12 correspond.
  • the cocking rod 8 can then be released. Two cases of figures are then possible.
  • the arm actuating device 9 When the voltage across the solenoid 35 of the electromagnetic actuator 21 is greater than the predetermined voltage threshold, the arm actuating device 9 is maintained in its arming position by the magnetic field generated by this solenoid, against the elastic return force exerted by the spring 10.
  • the return force exerted by the spring 14 must be greater than that exerted by the elastic arms 3.
  • the release of the cocking rod 8 is accompanied by the return of the actuating rod 9 towards its disarming position under the effect of the elastic return force of the spring 10.
  • the actuating rod 9 pushes the fork 24 of the balance 12 and forces it to return to its position disarming in which the attachment of the lip 16 of the balance 12 and the lip 17 of the cocking rod 8 is broken.
  • the cocking rod 8 can not therefore drive the moving element 28 and the movable contacts 11 in the closed position, and the latter therefore remain in the open position in which they are held by the elastic return force exerted by the arm 3.
  • a third scenario must be considered in the event that the switch mechanism, after being manually armed, is in armed configuration, the movable contacts 11 being in the closed position and the lip 16 of the balance 12 in mesh with the lip 17 of the cocking rod 8, and wherein the voltage across the solenoid 35 of the electromagnetic actuator 21 drops below the predetermined threshold.
  • the actuating bar 9 is biased by the spring 10 into its disarming position and drives the balance 12 into the corresponding position.
  • the lip 16 of the beam 12 disengages from its grip with the lip 17 of the cocking rod 8 and thus releases the moving element 28 and the movable contacts 11 which return spontaneously, under the effect of the elastic return force exerted by the arms 3, in their position of opening.

Landscapes

  • Push-Button Switches (AREA)
  • Electromagnets (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Air Bags (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Manipulator (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Transmission Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (7)

  1. Elektromagnetischer Schaltmechanismus mit manueller Rückstellung, umfassend:
    - eine Basis (2), auf der mindestens ein feststehender Kontakt (4) montiert ist,
    - mindestens einen beweglicher Kontakt (11), der einer beweglichen Einrichtung (28) zugeordnet ist und auf der Basis (2) montiert ist, um zwischen einer Öffnungsstellung und einer Schließstellung beweglich zu sein,
    - eine Einrichtung (3) zum elastischen Zurückholen des beweglichen Kontakts in seine Öffnungsstellung,
    - Spannmittel, um den beweglichen Kontakt (11) in seine Schließstellung zu bringen und in dieser zu halten, wobei diese Spannmittel eine Spannstange (8), die mit einer Lippe (17) zum Einhaken der dem beweglichen Kontakt (11) zugeordneten beweglichen Einrichtung (28) versehen ist, ein Mittel (14) zum elastischen Zurückholen dieser Spannstange in eine Spannstellung, in der, wenn die Lippe (17) der Spannstange (8) mit der dem beweglichen Kontakt (11) zugeordneten beweglichen Einrichtung (28) in Eingriff ist, der bewegliche Kontakt (11) an dem feststehenden Kontakt (4) in seiner Schließstellung entgegen der elastischen Rückholkraft anliegt, die von dem ihr zugeordneten Rückholmittel (3) ausgeübt wird, und Einrückmittel umfassen, die das Verhaken der Lippe (17) der Spannstange (8) mit der dem beweglichen Kontakt (11) zugeordneten beweglichen Einrichtung (28) gewährleistet, wenn die Spannstange (8) in eine Einrückstellung entgegen der Rückholkraft gedrückt wird, die von dem ihr zugeordneten elastischen Rückholmittel (14) ausgeübt wird,
    - automatische Entspannungsmittel, um das Aushaken der dem beweglichen Kontakt (11) zugeordneten beweglichen Einrichtung (28) gegenüber der Einhaklippe (17) der Spannstange (8) und damit die Rückkehr des beweglichen Kontakts (11) in seine Öffnungsstellung unter der Einwirkung des ihm zugeordneten elastischen Rückholmittels (3) zu bewirken, wobei diese Entspannungsmittel ein elektromagnetisches Betätigungsorgan bei Fehlen von Strom (21) umfassen, das ein bewegliches Betätigungselement (9) aufweist, das zwischen einer Entspannungsstellung, in der es durch ein zugeordnetes elastisches Rückholmittel (10) zurückgeholt wird, wenn die Spannung an den Anschlüssen des elektromagnetischen Betätigungsorgans (21) unter eine vorbestimmte Schwelle sinkt, um das Aushaken der beweglichen Einrichtung (28) des beweglichen Kontakts (11) gegenüber der Einhaklippe (17) der Spannstange (8) zu bewirken, und einer Spannstellung beweglich ist, in der es unter die Wirkung der Spannstange (8) gesetzt ist, wenn sie über Einrückmittel in die Einrückstellung eingedrückt ist, und in der es entgegen den zugeordneten elastischen Rückholmitteln (10) gehalten ist, wenn die Spannung des elektromagnetischen Betätigungsorgans (21) höher als eine vorbestimmte Schwelle ist,
    dadurch gekennzeichnet, dass die Einrückmittel einen Schwinghebel oder Auslösehebel (12) umfassen, der auf der dem beweglichen Kontakt (11) zugeordneten beweglichen Einrichtung (28) montiert ist, um zwischen einer Spannstellung und einer Entspannungsstellung zu verschwenken, und der besitzt:
    - eine Schulter (22), die geeignet ist, mit einem Ende (23) der Spannstange (8) so zusammenzuwirken, dass diese, wenn sie manuell in die Einrückstellung eingedrückt ist, den Schwinghebel (12) zwingt, sich in seine Spannstellung zu verschwenken,
    - eine Lippe (16), die ausgebildet ist, um mit der Lippe (17) der Spannstange (8) in Eingriff zu kommen, wenn der Schwinghebel (12) in Spannstellung ist,
    - einen Hebelarm (24), der mit dem beweglichen Element (9) des elektromagnetischen Betätigungsorgans (21) so gekoppelt ist, dass sich die Spannstellung und die Entspannungsstellung des beweglichen Elements (9) und des Schwinghebels (12) entsprechen.
  2. Mechanismus nach Anspruch 1, bei dem das Betätigungselement (9) des elektromagnetischen Betätigungsorgans (21) aus einer Stange (9) aus ferromagnetischem Material besteht, die einen Kern bildet, der teilweise in den Luftspalt (36) eines Solenoids (35) eingeführt ist, der zu dem elektromagnetischen Betätigungsorgan gehört.
  3. Mechanismus nach Anspruch 2, bei dem die Betätigungsstange (9) zwei Schultern (25, 26) aufweist, die zwischen sich eine Nut (27) begrenzen, in die die beiden Arme (24) einer Gabel eingeführt sind, die auf dem Schwinghebel (12) gebildet ist und den genannten Hebelarm bildet.
  4. Mechanismus nach Anspruch 3, bei dem das Mittel zur elastischen Zurückholung der Betätigungsstange (9) aus einer diese Stange umgebenden Schraubenfeder (10) besteht, die sich einerseits an einem feststehenden Teil (1) des elektromagnetischen Betätigungsorgans (21) und andererseits an der entsprechenden Schulter (25) dieser Stange abstützt.
  5. Mechanismus nach einem der Ansprüche 3 und 4, bei dem die Betätigungsstange (9) gemäß einer zur Spannstange (8) im Wesentlichen senkrechten Achse angeordnet ist.
  6. Mechanismus nach Anspruch 5, bei dem die Schwenkachse (15) des Schwinghebels (12) im Wesentlichen senkrecht zur Stange (9) und zur Spannstange (8) ist.
  7. Mechanismus nach einem der vorhergehenden Ansprüche, bei dem das Mittel zum elastischen Zurückholen der Spannstange (8) aus einer Schraubenfeder (14) besteht, die diese Spannstange (8) umgibt und die sich einerseits an der die feststehenden Kontakte (4) tragenden Basis (2) und andererseits an einem der Spannstange (8) zugeordneten manuellen Drücker (5) abstützt.
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
ES9901875U 1999-07-14
ES009901875U ES1043678Y (es) 1999-07-14 1999-07-14 Mecanismo interruptor electromagnetico con rearme manual.

Publications (3)

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

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EP00402024A Expired - Lifetime EP1069585B1 (de) 1999-07-14 2000-07-13 Elektromagnetischer Schaltmechanismus mit manuell betätigter Rückstellvorrichtung

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2426691B1 (de) * 2010-09-06 2015-11-04 ABB Technology AG Mechanische Übersteuerungsvorrichtung
CN109887812A (zh) * 2019-04-16 2019-06-14 天津加美特电气设备有限公司 一种停电自动脱扣掉闸的智能断路器

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

Also Published As

Publication number Publication date
ES1043678U (es) 2000-01-01
ATE322738T1 (de) 2006-04-15
EP1069585A2 (de) 2001-01-17
EP1069585A3 (de) 2002-09-11
ES1043678Y (es) 2000-06-16
DE60027090T2 (de) 2006-11-16
ES2261168T3 (es) 2006-11-16
DE60027090D1 (de) 2006-05-18

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