EP3171385A1 - Dispositif de fonctionnement de disjoncteur miniature multi-pôle - Google Patents

Dispositif de fonctionnement de disjoncteur miniature multi-pôle Download PDF

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Publication number
EP3171385A1
EP3171385A1 EP15821567.3A EP15821567A EP3171385A1 EP 3171385 A1 EP3171385 A1 EP 3171385A1 EP 15821567 A EP15821567 A EP 15821567A EP 3171385 A1 EP3171385 A1 EP 3171385A1
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EP
European Patent Office
Prior art keywords
tripping
rod
circuit breaker
operation device
rotary plate
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
EP15821567.3A
Other languages
German (de)
English (en)
Other versions
EP3171385A4 (fr
EP3171385B1 (fr
Inventor
Changqing ZHOU
Xiaomin XIA
Liying Yu
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.)
Zhejiang Chint Electrics Co Ltd
Chint Group Corp
Original Assignee
Zhejiang Chint Electrics Co Ltd
Chint Group Corp
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Application filed by Zhejiang Chint Electrics Co Ltd, Chint Group Corp filed Critical Zhejiang Chint Electrics Co Ltd
Publication of EP3171385A1 publication Critical patent/EP3171385A1/fr
Publication of EP3171385A4 publication Critical patent/EP3171385A4/fr
Application granted granted Critical
Publication of EP3171385B1 publication Critical patent/EP3171385B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the present invention relates to a miniature low-voltage circuit breaker, in particular to an operation device of a miniature circuit breaker, more particularly an operation device of a multi-pole miniature circuit breaker.
  • the operation device is capable of cooperating with a circuit breaker unit.
  • the circuit breaker may be a two-pole circuit breaker consisting of thermal tripping devices, electromagnetic tripping devices and contacts associated with the operation device and capable of performing closing and breaking, or may be a multi-pole circuit breaker cooperating with two or more operation devices.
  • an operation mechanism of a low-voltage circuit breaker especially a terminal type miniature circuit breaker has a modular standard requirement in an appearance size, and meanwhile is required to have short-circuit protection and overload protection functions. Additionally, there is often a need for residual current action protection, and therefore, most of the existing multi-pole miniature circuit breakers adopt a spliced structure in which a plurality of single-pole miniature circuit breakers are spliced into a multi-pole miniature circuit breaker, for example "Operation Mechanism of Low-voltage Electric Circuit Breaker" disclosed by the Chinese Patent CN1013816B and "Operation Mechanism of Miniature Circuit Breaker" disclosed by the Chinese Patent CN1018684B , etc.
  • a shell of each single-pole miniature circuit breaker is internally provided with an independent operation device, a pair of separable movable and static contact groups having a broken position and a closed position, an electromagnetic tripping device for short-circuit protection and a thermal tripping device for overload protection, wherein the operation device can only be mechanically coupled with one electromagnetic tripping device and one thermal tripping device, that is, one operation mechanism can only control closing and breaking of a loop of a circuit breaker of one pole.
  • the existing operation mechanism can operate closing/breaking actions of two movable contacts, the two movable contacts are only switch contacts in the same control loop, rather than two pole contacts for controlling two different loops.
  • a rotary plate is adopted to synchronously drive closing and breaking of contacts of a phase and a neutral electric circuit, but a circuit breaking rod can only be controlled by a circuit breaking device.
  • the operating mechanism can operate closing/breaking of two movable contacts and two static contacts, it should be understood that a pair of switching elements formed by two movable contacts and two static contacts are in a phase circuit and a neutral circuit respectively.
  • phase circuit and the neutral circuit are loaded and connected in series in one loop, and therefore, this circuit breaker only having one set of electromagnetic tripping device and thermal tripping device is not the real two-pole circuit breaker, and cannot be used for operating closing/breaking of two independent loops, while the multi-pole circuit breaker must have a set of electromagnetic tripping device and thermal tripping device in each pole.
  • a flexible device of an existing operation mechanism for providing a contact pressure fails to satisfy a requirement on the contact pressure consistency among various poles of the multi-pole circuit breaker, by a reason that force arms of the elastic force of a spring acting on a needle rod and the acting force of two contact supports acting on the needle rod are difficult to be equal, and therefore, the elastic forces borne by the two contact supports from the spring may be balanced, but may not be equal. Therefore, the contact pressures when two movable contacts on the two contact supports and two movables contacts are closed respectively are not equal, and accordingly each pole of the existing multi-pole miniature circuit breaker is provided with an independent operation device.
  • the operating mechanism described in above patents is either used for only controlling closing and breaking a loop of a circuit breaker of one pole, or is applicable to a phase plus neutral electric circuit breaker.
  • all the terminal type miniature circuit breakers are developed toward a miniature trend.
  • the miniature trend not only refers to a volume of a circuit breaker product, but also refers to a width thereof, especially the width modulus of a multi-pole circuit breaker with more than two poles is greatly reduced to save a valuable space for mounting a terminal control cabinet of the circuit breaker, and has a key effect on promotion of a current specification of the circuit breaker product.
  • the two-pole circuit breaker requires two operating mechanisms arranged in parallel
  • the multi-pole circuit breaker requires a plurality of operating mechanisms arranged in parallel, and obviously, it is unlikely to satisfy the increasingly urgent demands of a circuit breaker for miniature and high breaking capacity.
  • two poles share one operation device, i.e., one operation device controls closing/breaking of movable contacts and static contacts of two poles, it is obvious that the volume of the circuit breaker product cannot be reduced.
  • the structure has been very compact, and it is necessary to solve the following technical problems: 1, the operation device must synchronously control two movable contacts to be closed/broken with/from the two static contacts respectively, and the contact pressures when the two movable contacts and the two static contacts are closed are equal; 2, the operation device must be mechanically coupled with two electromagnetic tripping devices respectively, and the tripping action of any one of electromagnetic tripping devices can reliably renders the operation device to trip and release; 3, the operation device must be mechanically coupled with two thermal tripping devices respectively, and the tripping action of any one of the thermal tripping devices reliably renders the operation device to trip and release. Therefore, it is necessary to perform overall miniature structure optimization design to the operation device in order to solve these technical problems.
  • an objective of the present invention is to provide an operation device of a miniature multi-pole miniature circuit breaker, which may not only operate closing/breaking of the two groups of movable contacts and static contacts of two poles at the same time, but also achieves a functional effect of coupling with two electromagnetic tripping devices and two thermal tripping devices at the same time; and the operation device is small in size, compact in structure, reasonable in layout and more reliable in motion.
  • the present invention provides the following specific technical solutions.
  • An operation device of a multi-pole miniature circuit breaker comprises a handle 1 pivotally mounted on a circuit breaker housing through a rotating shaft 2, a rotary plate 5 pivotally mounted on the circuit breaker housing through a mandrel 14, two static contacts 22, 27 and two movable contacts 18, 38 capable of performing closing/breaking fit with the static contacts 22, 27 respectively, an energy storage spring acting on the rotary plate 5 and a resetting member configured to drive a tripping rod 13 to reset; and two electromagnetic tripping devices 23 arranged side by side, each electromagnetic tripping device comprising an actuating ejection rod 24 which is capable of providing a short-circuit tripping action when a short-circuit current appears; and two thermal tripping devices arranged side by side, each thermal tripping device comprising a bimetal sheet 21 which is capable of providing an overload tripping action when an overload current appears.
  • the operation device further comprises: a tripping connecting rod 9 provided with a lock hook 42, which is pivotally mounted on the rotary plate 5 by a first twisting shaft 8; a tripping rod 13 which is provided with a lock tooth 41, a control element 40 capable of being matched with electromagnetic tripping devices of circuit breakers of two adjacent poles, and an actuating rod 16 capable of being matched with bimetallic sheets of thermal tripping devices of the circuit breakers of the two adjacent poles, the tripping rod 13 being pivotally mounted on the rotary plate 5 through a second twisting shaft 12 and being capable of doing a finite rotation about the second twisting shaft 12; a U-shaped rod 4 of which two ends are in joint connection with the handle 1 and the tripping connecting rod 9 respectively, the U-shaped rod 4 being capable of driving the tripping connecting rod 9 to move anticlockwise or clockwise about the first twisting shaft 8; two short-circuit short columns 31, 32 arranged on the control element 40 of the tripping rod 13 side by side, the two short
  • control element 40 is fixedly connected with the tripping rod 13; or the control element 40 and the tripping rod 13 are integrally formed.
  • control element 40 or the tripping rod 13 is provided with an axle hole 33
  • actuating rod 16 is provided with a pillow block 34 which is inserted into the axle hole 33 to form installation connection.
  • the actuating rod 16 is fixedly connected with the tripping rod 13; or the actuating rod 16 and the tripping rod 13 are integrally formed.
  • two contact supports 15, 35 are pivotally mounted on the mandrel 14, and are connected with the rotary plate 5 respectively through two overtravel mechanisms; the two movable contacts 18, 38 are arranged on corresponding contact arms 17, 39 respectively and are fixedly connected with the two contact supports 15, 35 respectively.
  • the contact arms 17, 39 are integrally formed with the contact supports 15, 35 respectively.
  • each overtravel mechanism comprises an overtravel spring 19, a first stopper 11 arranged on the contact supports 15, 35, a second stopper 20 arranged on the rotary plate 5, and a first clutching surface and a second clutching surface which are arranged on the contact supports 15, 35 and the rotary plate 5 respectively to form a clutching mechanism 6, wherein one end of the overtravel spring 19 is connected with the first stopper 11, the other end of the overtravel spring 19 is connected with the second stopper 20, under a state in which the movable contacts 18, 38 are broken from the static contacts 22, 27, the clutching mechanisms 6 are engaged, and under a state in which the movable contacts 18, 38 and the static contacts 22, 27 are closed, the clutching mechanisms 6 are disengaged; rotation centers of the two contact supports 15, 35 and the rotary plate 5 are concentric with an axis of the mandrel 14 respectively.
  • a positional distance B between the overload short columns 29, 30 and the second twisting shaft 12 is larger than a positional distance A between the short-circuit short columns 31, 32 and the second twisting shaft 12.
  • control element 40 and the actuating rod 16 are located in a space D between the two contact supports 15, 35.
  • the two short-circuit short columns 31, 32 are stretched respectively toward two lateral sides of the control element 40 to form a T shape.
  • the two overload short columns 29, 30 are stretched respectively toward two lateral sides of the actuating rod 16 to form a T shape.
  • the two contact supports 15, 35 are in contact fit with two surfaces of the rotary plate 5 respectively.
  • the tripping rod can be controlled by two adjacent groups of independent circuit breaking devices, so that the volume of the multi-pole miniature circuit breaker is greatly reduced, and especially the width having a modular requirement can be reduced significantly; in addition, the driving force of the electromagnetic circuit breaking devices at two sides is effectively reduced, such that a thermal circuit breaking force generated by bimetal sheets under an overload current can be reduced as much as possible, and therefore the operation device is more reliable in motion, and the current specification of the miniature circuit breaker can be further promoted while the minimization of the multi-pole miniature circuit breaker is realized.
  • an operation device of a multi-pole miniature circuit breaker of the present invention is further illustrated as below in conjunction with the embodiments illustrated in Figs. 1 to 6 .
  • the operation device of the multi-pole circuit breaker of the present invention is not limited to the description in the following embodiments.
  • the operation device of the multi-pole miniature circuit breaker of the present invention is mounted in an insulation housing (not shown in Fig. 1 ) of a circuit breaker, and mainly comprises a handle 1, and a rotating shaft 2 axially connected to the housing; a four connecting rod mechanism formed by a U-shaped rod 4, a rotary plate 5 and a mechanical lock 10 on the rotary plate 5, wherein the handle 1 is pivotally mounted on the insulation housing of the circuit breaker through the rotating shaft 2, the rotary plate 5 is pivotally mounted on the circuit breaker housing through a mandrel 14, and two ends of the U-shaped rod 4 are in hinge connection with the handle 1 and the tripping connecting rod 9 respectively; a tripping rod 13 which is pivotally mounted on a second twisting shaft 12 of the rotary plate 5 and can do a finite rotation about the second twisting shaft 12; an energy storage spring (not shown in Fig.
  • the multi-pole miniature circuit breaker provided by the present invention may be an integrated miniature two-pole circuit breaker which comprises two groups of switching elements with two adjacent static contacts 22, 27 and movable contacts 18, 38 which are in closing/breaking fit with the static contacts 22, 27, two adjacent electromagnetic circuit breaking devices 23, 23 sensitive to a short-circuit current, and two corresponding thermal circuit breaking devices sensitive to an overload current and having bimetal sheets 21, 21.
  • the multi-pole miniature circuit breaker may be an integrated multi-pole miniature circuit breaker which cooperates with two operating devices and is provided with a plurality of groups of switching elements and corresponding electromagnetic circuit breaking devices and thermal circuit breaking device, and the circuit breaker can control circuit breakers of a plurality of independent loops, and may be a three-pole four-line circuit breaker in which three poles are three phases of live lines and the rest pole is a neutral line; or may be a four-pole circuit breaker in which four poles are provided with electromagnetic breaking devices and thermal circuit breaking devices respectively.
  • the multi-pole miniature circuit breaker may be applied to an integrated multi-pole miniature residual current operated circuit breaker.
  • the operation device of the multi-pole miniature circuit breaker of the present invention comprises two electromagnetic devices 23 arranged side by side and two thermal tripping devices arranged side by side, wherein each electromagnetic tripping device 23 comprises an actuating ejection rod 24 (refer to Fig. 4 ) which can provide a short-circuit tripping action in the event that the short-circuit current appears.
  • the electromagnetic force of the electromagnetic tripping device 23 drives the actuating ejection rod 24 to move transversely, that is, the actuating ejection rod 24 can provide a short-circuit tripping action in the event that the short-circuit current appears.
  • Each thermal tripping device comprises a bimetal sheet 21 which can provide an overload tripping action in the event that an overload current appears, and when the overload current is present in a control loop of the pole where the thermal tripping device is located, a free end of the bimetal sheet 21 is thermally deformed to swing and shift, that is, the bimetal sheet 21 can provide an overload tripping action in the event that the overload current appears.
  • the two electromagnetic tripping devices 23 and the two thermal tripping devices can be realized by adopting a known structure, wherein one electromagnetic tripping device and one thermal tripping device are connected in series with one group of movable and static contacts to form a switching unit of one pole for controlling the on/off of one pole and realize short-circuit/overload protection of one pole, and the other electromagnetic tripping device and the other thermal tripping device are connected in series with the other group of movable and static contacts to form a switching unit of the other pole for controlling the on/off of the other pole and realize short-circuit/overload protection of the other pole.
  • the operation device further comprises a tripping connecting rod 9 with a lock hook 42 (refer to Fig.
  • a specific pivoting structure (not shown in drawings) where the handle 1 is pivotally mounted on the circuit breaker housing through the rotating shaft 2 may be implemented by a plurality of ways, but such following functions must be realized no matter which way is adopted: the handle 1 only has one freedom degree of rotation relative to the circuit breaker housing, and the rotation angle of the handle 1 is limited; or to say, the handle 1 has two positions defined corresponding to a closed state and a broken state of the operation device, and the two defined positions also define the rotation angle of the handle 1.
  • the specific pivoting structure where the rotary plate 5 is pivotally mounted on the circuit breaker housing through the mandrel 14 is of the following composite hinge structure, that is, the rotary plate 5 is provided with an axle hole (not shown in drawings), wherein the axle hole is sheathed on the mandrel 14 in a rotatable fit manner, and the mandrel 14 is fixedly connected with the circuit breaker housing.
  • two contact supports 15, 35 are also pivotally mounted on the mandrel 14, that is, the two contact supports 15, 35 are provided with an axle hole (not shown in drawings) respectively, the axle holes are sheathed on the mandrel 14 in a rotatable fit manner, and it can thus be seen that a structure where two contact supports 15, 35 and one rotary plate 5 are sheathed on one mandrel 14 constitutes the composite hinge structure.
  • Such composite hinge structure comprises two ways, namely an eccentric structure and a concentric structure.
  • a preferred way of the present invention is the concentric way, that is, the rotation centers of the two contact supports 15, 35 and the rotary plate 5 are concentric with an axis of the mandrel 14 respectively.
  • the two contact supports 15, 35 are in contact fit with two surfaces of the rotary plate 5 respectively, that is to say, the two contact supports 15, 35 and the rotary plate 5 are sheathed on the mandrel 14 in such a manner: the two contact supports 15, 35 not only are positioned at two sides of the rotary plate 5, but also are in contact fit with two surfaces of the rotary plate 5 respectively, and by means of such contact fit, the two contact supports 15, 35 and the rotary plate 5 have a freedom degree of relative rotation, rather than a freedom degree of axial shift.
  • the design of the present invention overcomes the traditional structure defect that contacts only support connection with the rotary plate, and adopts the composite hinge structure, especially a concentric structure, such that the operation device is more compact in structure and can reduce the volume of the operation device greatly to satisfy the requirement on a small-size design.
  • the two contact supports 15, 35 can rotate about one mandrel 14 independently and symmetrically to effectively ensure the action precision and reliability of movable contacts, ensure the closing/breaking action synchronism of two movable contacts and ensure the consistency of the contact pressure when two groups of movable contacts and static contacts are closed.
  • the rotary plate 5 and a mechanical lock 10 arranged thereon in Fig. 1 are formed by a lock hook 42 ( Fig. 5 ) on the tripping connecting rod 9 and a lock tooth 41( Fig. 5 ) on the tripping rod 13, wherein the mechanical interlock 10 controls stable closing or fault tripping of the operation device.
  • the lock hook 42 is in contact with the lock tooth 41, such that the mechanical interlock 10 is locked, and the operation device can perform successful closing and keep stable closing as long as the mechanical lock 10 is locked.
  • the mechanical interlock 10 is unlocked when the lock hook 42 is separated from the lock tooth 41.
  • Locking/unlocking of the mechanical interlock 10 is controlled by rotation of the tripping rod 13 about the second twisting shaft 12, and the rotation of the tripping rod 13 is multiply driven by the actuating ejection rods 24 of the electromagnetic tripping devices 23, the bimetal sheets 21 of the thermal tripping devices and a resetting member (not shown in drawings).
  • each actuating ejection rod 24 moves transversely to trigger short-circuit short columns 31, 32 of the control element 40 on the tripping rod 13, or when the free end of each bimetal sheet 21 swings and shifts to trigger overload short columns 29, 30 on the actuating rod 16 on the tripping rod 13, the rotation of the tripping rod 13 will be driven, and this rotation makes the mechanical interlock 10 be unlocked;
  • the resetting member can provide a flexible elastic force acting on the tripping rod 13, and the flexible elastic force drives the rotation of the tripping rod 13, such that the mechanical interlock 10 is automatically locked.
  • the resetting member may adopt a known structure, and a flexible elastic force of the resetting member drives the mechanical interlock 10 to recover locking and maintain locking.
  • the energy storage spring acting on the rotary plate 5 may adopt a known structure.
  • the elastic force of the energy storage spring acting on the rotary plate 5 always drives the rotary plate 5 to rotate toward a breaking direction, that is: the energy storage spring stores energy when the operation device is under a closing operation process and at a closed state; the energy storage spring releases energy when the operation device is under a broken process, and the released energy drives the operation device to execute a tripping action; the energy storage spring is at an energy release state when the operation device is at a broken or tripped state.
  • the control element 40 arranged on the tripping rod 13 may have two preferred specific structure forms, that is: the control element 40 is fixedly connected with the tripping rod 13; or the control element 40 and the tripping rod 13 are integrally formed.
  • the "fixedly connected” here refers that the control element 40 and the tripping rod 13 are of two parts, wherein the control element 40 is fixed to the tripping rod 13 through a fixed connection structure, and such structure has the advantage that a position of the control element 40 relative to the tripping rod 13 may be debugged.
  • the control element 40 and the tripping rod 13 are integrally formed refers that the control element 40 and the tripping rod 13 are of the same part, and such structure has the advantage that the production efficiency can be improved and is applicable to large-scale production.
  • Two short-circuit short columns 31, 32 of the control element 40 are arranged side by side and are in contact fit with actuating ejection rods 24 of the two electromagnetic tripping devices, i.e., one short-circuit short column 31 is matched with the actuating ejection rod 24 of one electromagnetic tripping device in a triggering manner, and the other short-circuit short column 32 is matched with the actuating ejection rod 24 of the rest electromagnetic tripping device in a triggering manner.
  • a preferred scheme is as follows: the two short-circuit short columns 31, 32 are stretched toward two lateral sides of the control element 40 to form a T shape as shown in Fig. 6 .
  • the control element 40 or the rotary plate 5 is provided with an axle hole 33
  • the actuating rod 16 is provided with a pillow block 34 which is inserted into the axle hole 33 to form installation connection, and the pillow block 34 may be movable fit or static fit with the axle hole 33.
  • Two overload short columns 29, 30 of the actuating rod 16 are arranged side by side and are matched with bimetal sheets 21 of the thermal tripping devices in a triggering manner, i.e., one overload short column 29 is matched with the bimetal sheet 21 of one thermal tripping device in a triggering manner, and the other overload short column 29 is matched with the bimetal sheet 21 of the rest thermal tripping device in a triggering manner.
  • a preferred scheme is as follows: the two overload short columns 29, 30 are stretched toward two lateral sides of the actuating rod 16 to form a T shape as shown in Fig. 6 .
  • a preferred scheme is as follows: a positional distance B between the overload short columns 29, 30 and the second twisting shaft 12 is larger than a positional distance A between the short-circuit short columns 31, 32 and the second twisting shaft 12, and the triggering force of the bimetal sheets 21 can be reduced even the triggering force of the bimetal sheets 21 has a longer force arm than a triggering force of the actuating ejection rods 24.
  • each overtravel mechanism comprises an overtravel spring 19, a first stopper 11 arranged on the contact supports 15, 35, a second stopper 20 arranged on the rotary plate 5, and a first clutching surface (as shown in a clutching mechanism 6 in Fig. 2 and Fig. 3 ) and a second clutching surface (as shown in the clutching mechanism 6 in Fig. 2 and Fig.
  • the two contact supports are further provided with two torsional springs 19, wherein one end of each torsional spring is matched with the first stopper 11, and the other end of the torsional spring is matched with the second stopper 20 on the rotary plate 5 to ensure that the contact supports form effective engaging 6 with the rotary plate when the rotary plate 5 finitely rotates between a broken position and a closed position where contacts 22, 27, 18, 38 are located.
  • the torsional springs 19 provide an acting force when the contacts 22, 27, 18, 38 are at a closed position.
  • each overtravel spring 19 is connected with the first stopper 11, the other end of the overtravel spring 19 is connected with the second stopper 20.
  • the clutching mechanisms 6 are engaged under a state where the movable contacts 18, 38 are broken from the static contacts 22, 27, and the clutching mechanisms 6 are disengaged under a state where the movable contacts 18, 38 and the static contacts 22, 27 are closed.
  • the first clutching surface may be arranged on the contact supports 15, 35 by adopting a known manner, that is, each contact support is provided with a first clutching surface.
  • the second clutching surfaces may be arranged on two surfaces of the rotary plate 5 by adopting a known manner, that is, two surfaces of the rotary plate 5 are provided with a second clutching surface respectively.
  • two contact supports 15, 35 and one rotary plate 5 are sheathed on the mandrel 14, the two contact supports 15, 35 are in contact fit with two surfaces of the rotary plate 5 respectively, and therefore, two surfaces of the rotary plate 5 constitute two clutching mechanisms 6, wherein one clutching mechanism 6 is composed of a first clutching surface on one of the contact supports 15 and a second clutching surface on one of the surfaces of the rotary plate 5, and the other clutching mechanism 6 is composed of a first clutching surface on the other contact support 35 and a second clutching surface on the other surface of the rotary plate 5.
  • each overtravel spring 19 drives engaging of the clutching mechanisms 6, i.e., drives the first clutching surface to be in contact with the second clutching surface, and therefore, in the absence of an external force acting on the contact supports 15, 35, that is, the movable contacts 18, 38 are broken from the static contacts 22, 27, the first clutching surface is in contact with the second clutching surface, i.e., the clutching mechanisms are engaged.
  • Such engaging limits relative rotation between the contact supports 15, 35 and the rotary plate 5, such that the positions of the contact supports 15, 35 relative to the rotary plate 5 are stable and realize linkage.
  • the width of the operation device does not exceed the width of two switching units arranged side by side, which is conductive to realizing uniform arrangement of a plurality of operation devices on the front surface of the multi-pole circuit breaker, and the linkage cooperation among various operation devices is reliable.
  • a normal closing process is as follows:
  • a normal breaking process is as follows:
  • a short-circuit tripping process is as follows:

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EP15821567.3A 2014-07-17 2015-01-28 Dispositif de fonctionnement de disjoncteur miniature multi-pôle Active EP3171385B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410341341.5A CN104134588B (zh) 2014-07-17 2014-07-17 一种多极小型断路器的操作装置
PCT/CN2015/071748 WO2016008298A1 (fr) 2014-07-17 2015-01-28 Dispositif de fonctionnement de disjoncteur miniature multi-pôle

Publications (3)

Publication Number Publication Date
EP3171385A1 true EP3171385A1 (fr) 2017-05-24
EP3171385A4 EP3171385A4 (fr) 2018-02-21
EP3171385B1 EP3171385B1 (fr) 2018-09-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15821567.3A Active EP3171385B1 (fr) 2014-07-17 2015-01-28 Dispositif de fonctionnement de disjoncteur miniature multi-pôle

Country Status (5)

Country Link
EP (1) EP3171385B1 (fr)
KR (1) KR101929302B1 (fr)
CN (1) CN104134588B (fr)
AU (1) AU2015291700B2 (fr)
WO (1) WO2016008298A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP3671799A1 (fr) * 2018-12-20 2020-06-24 Schneider Electric USA, Inc. Disjoncteur électronique neutre à double coupure et carte électronique alimentée côté ligne

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CN104134588B (zh) * 2014-07-17 2016-03-02 正泰集团股份有限公司 一种多极小型断路器的操作装置
FR3036000B1 (fr) * 2015-05-07 2017-04-21 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant
CN105977079B (zh) * 2016-06-30 2024-02-06 江苏大全高压开关有限公司 中、高压断路器及负荷开关超行程调试工装及调试方法
CN105977110B (zh) * 2016-07-19 2019-03-26 浙江创奇电气有限公司 操作机构中的防误脱扣的u型锁扣和操作机构及其断路器
CN106971921B (zh) * 2017-04-17 2019-10-01 乐清市沃斯托电气有限公司 断路器
CN107863281A (zh) * 2017-12-07 2018-03-30 厦门安达兴电气集团有限公司 一种转动式联动双动触头机构及开关断路器
CN108288570B (zh) * 2017-12-22 2024-02-13 上海诺雅克电气有限公司 断路器的脱扣装置
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CN113314372B (zh) * 2021-05-24 2022-08-26 嘉兴京硅智能技术有限公司 一种旋转动作机构
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EP3171385A4 (fr) 2018-02-21
EP3171385B1 (fr) 2018-09-19
WO2016008298A1 (fr) 2016-01-21
CN104134588B (zh) 2016-03-02
KR20170068430A (ko) 2017-06-19
AU2015291700A1 (en) 2017-03-09
KR101929302B1 (ko) 2018-12-14
AU2015291700B2 (en) 2018-07-05

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