EP0612090A2 - Drehbetätigungseinrichtung für einen Leistungsschalter - Google Patents

Drehbetätigungseinrichtung für einen Leistungsschalter Download PDF

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Publication number
EP0612090A2
EP0612090A2 EP94420036A EP94420036A EP0612090A2 EP 0612090 A2 EP0612090 A2 EP 0612090A2 EP 94420036 A EP94420036 A EP 94420036A EP 94420036 A EP94420036 A EP 94420036A EP 0612090 A2 EP0612090 A2 EP 0612090A2
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
housing
integral
handle
drive nut
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
EP94420036A
Other languages
English (en)
French (fr)
Other versions
EP0612090B1 (de
EP0612090A3 (de
Inventor
Olivier Bernard
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.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
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
Priority claimed from FR9301825A external-priority patent/FR2701593B1/fr
Priority claimed from FR9301824A external-priority patent/FR2701592B1/fr
Application filed by Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0612090A2 publication Critical patent/EP0612090A2/de
Publication of EP0612090A3 publication Critical patent/EP0612090A3/de
Application granted granted Critical
Publication of EP0612090B1 publication Critical patent/EP0612090B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • 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
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
    • 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
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
    • H01H2071/565—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel using a add on unit, e.g. a separate rotary actuator unit, mounted on lever actuated circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/08—Turn knobs
    • H01H3/10—Means for securing to shaft of driving mechanism

Definitions

  • the present invention relates to a rotary control device for a circuit breaker, in particular a three-phase circuit breaker of the industrial type, this circuit breaker comprising a front closing faceplate provided with an opening traversed by a pivoting crank pin which can occupy at least two extreme stable positions, this device comprising a housing mounted on said faceplate, a rotary handle integral with this housing and a mechanism for coupling said handle and said crankpin.
  • circuit breakers and in particular three-phase industrial circuit breakers, are usually housed in housings whose front closure plate, called faceplate, has an elongated opening crossed by a pivoting crankpin which can occupy two stable positions corresponding respectively to the opening and when the circuit breaker closes, and a central intermediate position which indicates a fault.
  • These boxes are sometimes mounted in an electrical box or panel with a door.
  • the drawback of known devices of this type lies in the fact that they do not comprise effective safety members making it possible to prevent a mismatched mounting of the two coupled control means, namely the crank pin and the rotary handle.
  • a first object of the invention consists in producing a rotary control device for the crank pin of a circuit breaker ensuring the concordance between the state of the circuit breaker and that of the rotary control device.
  • the coupling mechanism comprises for this purpose polarization means arranged to prevent mounting of said device in mismatched state with the circuit breaker.
  • said mechanism comprises a drive nut movable in rotation with said rotary handle and a drive fork pivoting about a fixed axis and mechanically coupled to said drive nut by an eccentric pin carried by the latter and engaged in an oblong housing formed in said drive fork
  • said polarizing means comprise an opening formed in said drive fork in which is engaged said crank pin of the circuit breaker when the circuit breaker and the rotary control device are in state concordance, as well as a plate integral with said fork and at least partially bordering said opening.
  • it may include door locking means associated with said coupling mechanism.
  • it may comprise means of locking by a lock, in particular a lock of the barrel type.
  • a development of the invention also relates to an extended rotary control for a circuit breaker, in particular an industrial circuit breaker, comprising an operating pin mounted between its rotary handle and its housing.
  • Rotary controls of this type are already known. However, they have a significant defect due to the fact that the operating axis, rigidly coupled to the housing, does not allow the take-up of the manufacturing clearances and the compensation of the dispersions on the dimensions of realization of the electrical panels. The mounting of these controls is sometimes made difficult and requires interventions to correct these clearances and / or these deviations.
  • a second object of the invention consists in producing a rotary control for a circuit breaker allowing compensation for alignment errors due to gravity and dispersions on the dimensions of the tables.
  • the extended rotary control comprises for this purpose an elastic device for refocusing the operating axis, and a socket which provides mechanical coupling between the operating axis and a drive nut of the housing.
  • said socket comprises a first substantially cylindrical section which is housed with play in a frustoconical central recess of the drive nut.
  • said first section has a toothing formed at the periphery of a region of its end and said drive nut also has a toothing, these two toothing being arranged to mesh with play.
  • FIG 1 shows a perspective view of a circuit breaker 10 whose housing 11 is closed on its front face by a faceplate 12 on which is mounted a device rotary control 13.
  • This device comprises a housing 14 which contains a coupling mechanism between a pivoting crank pin of the circuit breaker and a rotary handle 15 mounted at the front of this housing. Each position of the handle corresponds to a position of the crankpin and to a state of the circuit breaker.
  • Figures 1A, 1B and 1C respectively represent three positions of the handle corresponding to three states of the circuit breaker.
  • the circuit breaker In the position shown in Figure 1A, the circuit breaker is in its open state.
  • the handle 15 is oriented towards the mark O on the front face of the housing 14.
  • the circuit breaker In the position represented by FIG. 1B, the circuit breaker is in its tripped state on fault.
  • the handle 15 is oriented towards the mark D on the front face of the housing 14.
  • FIG. 1C the circuit breaker is in its closed state.
  • the handle 15 is oriented towards the mark F on the front face of the housing.
  • FIG. 2 shows a perspective view illustrating the coupling mechanism housed in the housing 14.
  • the handle 15 is mounted on an axis 16 and is integral with a drive nut 17 which carries an eccentric pin 18 engaged in an oblong housing 19 of a drive fork 20 pivoting about a fixed axis 21 integral with the housing 14.
  • the drive fork 20 consists of a first element 20a which cooperates with the eccentric pin 18 and of a second element 20b mounted parallel to the first and rigidly linked to the latter.
  • the element 20b has an opening 22 in which the crank pin of the circuit breaker is engaged.
  • the rotation of the handle causes the rotation of the drive nut 17 and the eccentric 18 which it carries. Therefore, the eccentric rotates the drive fork 20 by acting on said first element 20a of this fork.
  • said first element 20a and said second element 20b of this drive fork are rigidly linked, they pivot simultaneously in a plane perpendicular to the axis 21.
  • the opening 22 defines a housing in which is engaged the crankpin which is subjected to a thrust on the part of the walls surrounding the opening and which is therefore tilted in one or the other of the positions defined with reference to FIGS. 1A, 1B and 1C.
  • FIGS. 2A, 2B, 2C and 2D represent sectional views illustrating the different cases which may arise during the installation of the rotary control device on the faceplate of a circuit breaker.
  • the handle 15 is on the mark O, which corresponds to the open position of the device.
  • the crank pin 30 of the circuit breaker is also in the position corresponding to the open state of this circuit breaker. Therefore, the opening 22 of the element 20b of the drive fork 20 is in a position such that this crankpin can engage there freely.
  • the handle 15 is on the mark F, which corresponds to the closed position of the device.
  • the crankpin 30 is in the same position as before, which corresponds to the open state of the circuit breaker.
  • the opening 22 is offset from that previously occupied. Consequently, the crank pin 30 cannot be engaged in this opening.
  • This interference zone 31 is constituted by a keying plate 31 ′ which is integral with the element 20b and which borders one side of the opening 22.
  • the handle is on the mark F, which corresponds to the closed position of the device.
  • the crankpin 30 is also in the position corresponding to the closed state of the circuit breaker. Therefore, the opening 22 of the element 20b of the drive fork 20 is in a position capable of accommodating this crankpin. There is a concordance of position due to the concordance of the states.
  • the handle 15 is on the mark O, which corresponds to the open position of the device.
  • the crankpin 30 is in the position corresponding to the closed state of the circuit breaker. Therefore, the opening 22 is located in a position offset from that which would allow the introduction of the pin.
  • this implementation is prohibited when there is a discrepancy between states.
  • This set of components which cooperate to authorize the setting up of the rotary control device when there is a concordance of states and to prohibit this setting up when there is a mismatch, constitutes a keying system.
  • the rotary control device is also equipped with door locking means arranged to allow, if necessary, to lock a door of a cabinet inside which a circuit breaker is mounted.
  • door locking means arranged to allow, if necessary, to lock a door of a cabinet inside which a circuit breaker is mounted.
  • FIGS. 3A, 3B, 3C, 3D and 3E These means are illustrated by FIGS. 3A, 3B, 3C, 3D and 3E. They comprise a lock 40 pivoting about a fixed axis 41 and provided at one of its ends with a spout 42 arranged to cooperate with a stop 43 secured to the drive nut 17 secured to the rotary control handle.
  • the other end of the latch 40 has a stop 44 arranged to cooperate with a hook 45 secured to said door of the box containing the circuit breaker.
  • the lock 40 is permanently biased by a compression spring 46 which tends to tilt it in the direction of the arrow A, towards a position represented by FIG. 3D.
  • the door lock is an optional function which can be activated or not by the end user.
  • the latch 40 can be equipped with two screws 47 and 48 arranged to cooperate, if necessary, with two fixed stops 49 and 50 secured to the housing 14 of the rotary control device.
  • the screw 48 bears against the stop 50 and prevents the latch 40 from tilting in the direction of arrow A.
  • the stop 44 remains inside the housing 14 and the spout 42 does not interfere with the circular path of the stop 43 when the handle is turned. There is therefore neither door lock nor handle lock.
  • the screw 48 has been removed, but the screw 47 is maintained.
  • the latch 40 has tilted so that the screw 47 bears against the stop 49.
  • the stop 44 is engaged in an opening 51 of the housing 14 and cooperates with the hook 45 to lock the circuit breaker cabinet door.
  • the screw 47 and the stop 49 prevent complete tilting of the latch 40 and, therefore, preserve a clearance between the spout 42 and the stop 43. In this case, the door locking function is ensured, but not the handle lock function.
  • FIGS. 3C, 3D and 3E When the two screws 47 and 48 are removed, complete pivoting of the lock 40 is theoretically possible. In practice, however, there are three distinct cases illustrated respectively by FIGS. 3C, 3D and 3E.
  • the hook 45 of the cabinet door has the same function as the screw 47 associated with the stop 49, since it prevents the complete tilting of the lock 40.
  • this hook 45 is in the position shown when the cabinet door is closed. It serves as a stop stop preventing the complete pivoting of the lock 40 and to preserve a clearance between the spout 42 and the stop 43 to allow the free rotation of the handle coupled to the drive nut 17.
  • the rotary control handle can be freely operated.
  • Figure 3E shows that the cabinet door can only be opened if the circuit breaker is in the open position, when the two screws 47 and 48 are removed.
  • the movable elements are in the position shown in Figure 3D.
  • the stop 43 of the drive nut 17 which has a rounded edge 43a, cooperates with a ramp 52 formed on the blank of the lock 40, at the rear of the spout 42 to tilt this lock and release the hook 45 from the door.
  • the rotation of the handle in the direction of arrow C corresponds to an operation tending to bring this handle into the open position of the circuit breaker.
  • the device can be provided with locking means by a lock.
  • locking means by a lock.
  • the mode of implementation of this additional function is described with reference to FIGS. 4A, 4B, 4C and 4D.
  • a lock 60 of the barrel type is mounted inside the box 14. This lock comprises a rotary bolt 61 which is arranged to cooperate with the element 20b of the drive fork.
  • FIG. 4A represents the lock 60 in the unlocked position, the rotary control device being in the closed position which corresponds to the closed state of the circuit breaker.
  • FIG. 4B shows the lock 60 in the locked position, the rotary control device always being in the closed position.
  • the bolt 61 is engaged in a notch 62 formed in the drive fork, and more exactly in a part 20C connecting the two elements 20a and 20b, and perpendicularly to the latter. It prevents rotation of the drive nut 17 since the element 20a is blocked and blocks the eccentric pin 18.
  • FIGS 4C and 4D illustrate the operation of the lock when the rotary control device is in the open position.
  • a lock 60 'of the barrel type which could be identical to the lock 60 shown in Figures 3A and 3B, comprises a bolt 61'. In both cases, the rotary control device is in the open position. In the example of FIG. 4C, the lock 60 'is open and the bolt 61' does not interfere with the path described by the part 20C of the drive fork 20 when the drive nut 17 is operated.
  • the locking of the drive nut by the bolt could be obtained by means different from the support of this bolt against the part 20C.
  • the bolt could, for example, cooperate with one or other of the parts 20a or 20b.
  • the extended rotary control 110 comprises an operating axis 111, a rotary handle 112 mounted at the free end of this axis, a housing 113 to which the operating axis 111 is coupled, at its other end , by means of an elastic centering device 114.
  • the handle 112 is associated with a centering ring 115 which has a conical inner surface 116 defining a circular ramp on which the rounded end 117 of the operating axis 111 is supported, at the start of the closing phase (see FIG. 6A) of a door 118 on which said handle 112 is mounted.
  • the elastic recentering device 114 is coupled to a drive nut 119 of the housing 113, which is provided with a frustoconical central recess 120.
  • This device also comprises a socket 121 comprising a first substantially cylindrical section 122, of reduced section, and a second substantially cylindrical section 123, of wide section.
  • the first section 122 is engaged in the frustoconical central recess 120 of the drive nut 119 to which it is fixed by a screw 124 screwed in a threaded bore 125 arranged axially and formed in said first section 122 and having an enlarged head 126 which bears on the edges 127 of a circular clearance 128 produced in the drive nut, on the side opposite to the frustoconical recess 120.
  • the second section 123 comprises a recess of polygonal section, for example square, arranged to receive one end of the operating axis 111.
  • the operating axis 111 can be angularly struggled as shown in the Figure 6B.
  • a compression spring 129 is mounted between a flange 130 of the sleeve 121 and a support ring 131 mounted coaxially on the drive nut.
  • a protective shell 132 covers this assembly.
  • the spring has the effect of generating a thrust tending to move the sleeve 121 away from the drive nut. As these two elements are linked by the screw 124, this distance is counteracted and the effect obtained is a refocusing of the sleeve relative to the drive nut, when the operating axis is released after having undergone an angular displacement.
  • the rotation of the drive nut is obtained by means of a first toothing 133 formed at the periphery of the end zone of the first section 122 of the sleeve 121, which cooperates with a second toothing 134, formed at the bottom of the recess frustoconical central 120 (FIGS. 7A and 7B).
  • a relatively large clearance is provided between the two teeth so that they remain engaged even when the operating axis is angularly offset.
  • the operating axis can be angularly offset, while remaining coupled to the drive nut. Thanks to the compression spring, the operating axis tends to be positioned in an axial direction as soon as it is released by opening the door of the switchboard, after having undergone an angular offset and can return to its offset position at the time of closing. from this door.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Lock And Its Accessories (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Breakers (AREA)
EP94420036A 1993-02-16 1994-02-02 Drehbetätigungseinrichtung für einen Leistungsschalter Expired - Lifetime EP0612090B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9301824 1993-02-16
FR9301825A FR2701593B1 (fr) 1993-02-16 1993-02-16 Commande rotative prolongée pour un disjoncteur.
FR9301824A FR2701592B1 (fr) 1993-02-16 1993-02-16 Dispositif de commande rotative d'un disjoncteur.
FR9301825 1993-02-16

Publications (3)

Publication Number Publication Date
EP0612090A2 true EP0612090A2 (de) 1994-08-24
EP0612090A3 EP0612090A3 (de) 1994-12-07
EP0612090B1 EP0612090B1 (de) 1998-09-02

Family

ID=26230107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94420036A Expired - Lifetime EP0612090B1 (de) 1993-02-16 1994-02-02 Drehbetätigungseinrichtung für einen Leistungsschalter

Country Status (4)

Country Link
US (1) US5493083A (de)
EP (1) EP0612090B1 (de)
DE (1) DE69412880T2 (de)
ES (1) ES2122201T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
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WO1998001882A1 (en) * 1996-07-10 1998-01-15 Siemens Energy & Automation, Inc. Circuit breaker handle operator apparatus and system
EP2638552A4 (de) * 2010-11-12 2016-11-02 Carling Technologies Inc Schalter mit schwenkbetätigung

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EP2638552A4 (de) * 2010-11-12 2016-11-02 Carling Technologies Inc Schalter mit schwenkbetätigung

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EP0612090B1 (de) 1998-09-02
US5493083A (en) 1996-02-20
ES2122201T3 (es) 1998-12-16
DE69412880T2 (de) 1999-03-11
DE69412880D1 (de) 1998-10-08
EP0612090A3 (de) 1994-12-07

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