CN104134588B - A kind of operating means of multipole small-size circuit breaker - Google Patents
A kind of operating means of multipole small-size circuit breaker Download PDFInfo
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- CN104134588B CN104134588B CN201410341341.5A CN201410341341A CN104134588B CN 104134588 B CN104134588 B CN 104134588B CN 201410341341 A CN201410341341 A CN 201410341341A CN 104134588 B CN104134588 B CN 104134588B
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- circuit breaker
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- bar
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- 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
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- 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
- H01H71/10—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
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- 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
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Abstract
The operating means of multipole small-size circuit breaker, comprise handle, the rotor plate be journaled into by axle on housing, two to can close/contact that coordinates of disjunction and two electromagnetic tripping apparatus and thermal release device be arranged side by side.The trip link being provided with latch hook is journaled on rotor plate by the first twisted axis; The trip(ping) bar be journaled on rotor plate by the second twisted axis is provided with lock tooth, the operating element that can coordinate with two neighboring pole circuit breaker electromagnetic tripping apparatus respectively and the actuator lever that can coordinate with the bimetal leaf of two neighboring pole breaker thermal trip gear respectively, its two ends respectively with the U-shaped bar of handle and trip link hinge-coupled, two shorting tab be disposed side by side on operating element touch with the actuating push rod of two electromagnetic tripping apparatus respectively and coordinate; Two overload short columns be disposed side by side in actuator lever touch with the bimetal leaf of two thermal release devices respectively and coordinate.Trip(ping) bar can by adjacent two groups independently trip gear control, volume is little, compact conformation and action is more reliable.
Description
Technical field
The present invention relates to low-voltage miniature circuit breaker, be specifically related to a kind of operating means of miniature circuit breaker, particularly a kind of operating means of multipole small-size circuit breaker, this operating means can be worked in coordination with breaker unit, the two poles of the earth circuit breaker that circuit breaker can be made up of heat, electromagnetic tripping apparatus and the sets of contacts of cut-offfing associated with operating means also can be the multipole circuit breaker of being worked in coordination with by two or more operating means.
Background technology
General low-voltage circuit breaker, the particularly operating mechanism of terminal class miniature circuit breaker, there is modularization standard-required in its overall dimension, also require that there is short-circuit protection and overload protection function simultaneously, in addition the demand of aftercurrent action protecting is often also had, for this reason, existing multipole small-size circuit breaker majority adopts assembled structure, a multipole small-size circuit breaker is assembled into multiple one pole miniature circuit breaker, " operating mechanism of low-voltage power circuit breaker " disclosed in Chinese patent CN1013816B and " a kind of operating mechanism of miniature circuit breaker " disclosed in Chinese patent CN1018684B etc., there is in the shell being characterized in each one pole miniature circuit breaker an independently operating means and have the separable dynamic/static contact group of disconnection and make position for a pair, an electromagnetic tripping apparatus for short-circuit protection, a thermal release device for overload protection, operating means can only with an electromagnetic tripping apparatus and a thermal release device mechanical couplings, namely operating mechanism can only control the closed and disconnected in a circuit breaker loop, pole.Existing operating mechanism and enable operation two moving contacts closed/disjunction action, but the switch contact of these two moving contacts also just in same control loop, and two pole contacts of control two different circuits can not be used as." operating mechanism for the band swing arm of a phase line and neutral circuit circuit breaker " disclosed in Chinese patent CN1033833C, this operating mechanism adopts a rotor plate can drive the closed and disconnected of phase line and neutral circuit contact simultaneously, but interruption pole only can be controlled by a tripper.Although this operating mechanism can operate two moving contacts and fixed contact closed/disjunction, but should understand, its dual switch element be made up of two moving contacts and two fixed contacts is in phase alignment circuit and neutral circuit respectively, and when actual motion, phase alignment circuit and neutral circuit by load in series in same loop, therefore, this only have the circuit breaker of a set of electromagnetic tripping apparatus and thermal release device to be not real double-pole cut-out, can not be used for operating two independent loops closed/disjunction, and multipole circuit breaker must have a set of electromagnetic tripping apparatus and thermal release device in each pole.
Circuit breaker application practice proves, existing operating mechanism in order to provide the flexible apparatus of contact force can not meet multipole circuit breaker each pole between the conforming requirement of contact force, the arm of force that reason is its spring action between the elastic force of shank acts on shank respectively active force with two contact supporting plates is difficult to realize equal, therefore, although the elastic force of spring suffered on two contact supporting plates can balance, but can not be equal, contact when making two moving contacts on two contact supporting plates close with two fixed contacts respectively is thus unequal, for this reason, each pole of existing multipole small-size circuit breaker is provided with an independently operating means.Operating mechanism described in above-mentioned patent, or only control pole circuit breaker circuit closed and a disconnection, or be applicable to phase line and neutral circuit circuit breaker, terminal miniature circuit breaker is all developing to miniaturization in the world at present, miniaturization not only refers to the volume reducing circuit breaker, also its width dimensions is referred to, the width dimensions modulus of the multipole circuit breaker particularly more than the two poles of the earth significantly reduces, to save the expensive real estate of the terminal control case installing circuit breaker, and for the current specification promoting circuit breaker, there is key effect.According to aforesaid operations mechanism technology, the two poles of the earth circuit breaker needs two operating mechanism parallel side-by-side to arrange, multipole circuit breaker then needs multiple operating mechanism parallel side-by-side to arrange, obviously cannot realize circuit breaker miniaturization and an urgent demand day by day of high breaking.If but two extremely share an operating means, namely operating means control the moving contact of two poles and fixed contact closed/disjunction, the obvious volume that can reduce circuit breaker, but existing multipole or one pole miniature circuit breaker are under the constraint of modularization standard, its structure closely, need to solve following technical problem in crowded inner space: one is that operating means must the/disjunctions closed with two fixed contacts respectively of Synchronization Control two moving contacts, and contact when two moving contacts close with two fixed contacts is equal; Two be operating means must respectively with two electromagnetic tripping apparatus mechanical couplings, and wherein the trip action of any one electromagnetic tripping apparatus can reliably cause operating means thread off tripping operation; Three be operating means must respectively with two thermal release device mechanical couplings, and wherein the trip action of any one thermal release device can reliably cause operating means thread off tripping operation.Therefore, these technical problems above-mentioned be solved, overall miniaturization structure optimal design must be carried out to operating means.
Summary of the invention
In order to overcome the defect of prior art, the object of the present invention is to provide a kind of operating means of multipole small-size circuit breaker, two groups of moving contacts that not only simultaneously can operate two poles and fixed contact closed/disjunction, the functional effect that is coupled with two electromagnetic tripping apparatus and two thermal release devices realizes while, and volume is little, compact conformation, rationally distributed and action is more reliable.
For achieving the above object, the invention provides following concrete technical scheme.
An operating means for multipole small-size circuit breaker, comprise the handle 1 be pivoted on by rotating shaft 2 on Shell of circuit breaker, be pivoted on by axle 14 rotor plate 5, two fixed contacts 22,27 and two on Shell of circuit breaker respectively/moving contact 18,38, that disjunction coordinate closed with fixed contact 22,27 act on energy-stored spring on rotor plate 5 and a return unit ordering about trip(ping) bar 13 and reset; And two electromagnetic tripping apparatus be arranged side by side 23, each electromagnetic tripping apparatus comprises one can send short circuit trip action actuating push rod 24 when short circuit current occurs; Two thermal release devices be arranged side by side, each thermal release device comprises one can send overlond trip action bimetal leaf 21 when overload current occurs.Described operating means also comprises: a trip link 9 being provided with latch hook 42, is pivoted on rotor plate 5 by the first twisted axis 8; A trip(ping) bar 13, which is provided with lock tooth 41, the operating element 40 that can coordinate with two neighboring pole circuit breaker electromagnetic tripping apparatus respectively and the actuator lever 16 that can coordinate with the bimetal leaf of two neighboring pole breaker thermal trip gear respectively, described trip(ping) bar 13 is pivoted on rotor plate 5 by the second twisted axis 12, and can do restricted rotational movement around this axle; Its two ends respectively with the U-shaped bar 4 of handle 1 and trip link 9 hinge-coupled, described trip link 9 can be ordered about and do counterclockwise or clockwise movement around the first twisted axis 8; Two are disposed side by side on the shorting tab 31,32 on the operating element 40 of described trip(ping) bar 13, and they touch with the actuating push rod 24,24 of described two electromagnetic tripping apparatus 23 respectively and coordinate; Two are disposed side by side on the overload short column 29 and 30 in the actuator lever 16 of described trip(ping) bar 13, and they touch with the bimetal leaf 21,21 of described two thermal release devices respectively and coordinate.
According to another execution mode of the present invention: described operating element 40 is fixedly connected with trip(ping) bar 13; Or described operating element 40 is one-body molded with trip(ping) bar 13.
According to another embodiment of the invention: described operating element 40 or trip(ping) bar 13 are provided with axis hole 33, described actuator lever 16 is provided with pillow block 34, and described pillow block 34 inserts axis hole 33 formation installation connection.
According to another embodiment of the invention: described actuator lever 16 is fixedly connected with trip(ping) bar 13; Or described actuator lever 16 is one-body molded with trip(ping) bar 13.
According to another execution mode of the present invention: in described axle 14, pivotable is provided with two contacts and supports 15,35, and they connect with described rotor plate 5 respectively by two travel mechanism; Described two moving contacts 18,38 are separately positioned on a corresponding contact point arm 17,39, and they support 15,35 to be fixedly connected with two contacts respectively.
According to another execution mode of the present invention: described contact point arm 17,39 supports 15 respectively with contact, 35 one-body molded.
According to further execution mode of the present invention: each travel mechanism comprises an excess of stroke spring 19, be arranged on contact and support 15, the first backstop 11 on 35, be arranged on the second backstop 20 on rotor plate 5 and be separately positioned on contact and support 15, 35 and rotor plate 5 on the first interface of formation clutch 6 and the second interface, one end of excess of stroke spring 19 connects with the first backstop 11, the other end of excess of stroke spring 19 connects with the second backstop 20, at moving contact 18, 38 with fixed contact 22, under 27 disjunction states, described clutch 6 engages, at moving contact 18, 38 with fixed contact 22, under 27 closure states, described clutch 6 is separated, described two contacts support 15,35 and the center of rotation of rotor plate 5 all concentric with the axle center of axle 14.
According to another execution mode of the present invention: the positional distance B between described overload short column 29,30 and second twisted axis 12 is greater than the positional distance A between described shorting tab 31,32 and second twisted axis 12.
According to present invention further optimization mode: described operating element 40 and actuator lever 16 are supported in the interval D between 15,35 described two contacts.
According to another embodiment of the invention: described two shorting tab 31,32 form T-shaped towards two lateral extension of described operating element 40 respectively.
According to another embodiment of the invention: described two overload short columns 29,30 form T-shaped towards two lateral extension of described actuator lever 16 respectively.
According to present invention further optimization mode: two described contacts supports 15,35 contact with two faces of rotor plate 5 respectively and coordinate.
Adopt arbitrary technical scheme of the invention described above, trip(ping) bar can by adjacent two groups independently tripper control, significantly reduce the volume of multipole small-size circuit breaker, particularly significantly can reduce the width dimensions with modularization requirement, and effectively reduce the actuating force of both sides electromagnetism tripper, the thermal cut-out power that bimetal leaf produces in the overcurrent condition is reduced as much as possible, make operating means action more reliable, make, while the miniaturization realizing multipole small-size circuit breaker, the current specification of miniature circuit breaker can also be promoted.
Accompanying drawing explanation
More clearly advantages and features of the invention can be found out from the description of accompanying drawing illustrated embodiment, wherein:
Fig. 1 is the planar structure schematic diagram of the operating means of multipole small-size circuit breaker of the present invention.
Fig. 2 is the planar structure schematic diagram that the moving contact of the operating means of multipole small-size circuit breaker of the present invention and fixed contact are in disjunction state.
Fig. 3 is the planar structure schematic diagram that the moving contact of the operating means of multipole small-size circuit breaker of the present invention and fixed contact are in closure state.
Fig. 4 and Fig. 5 is the perspective view that the operating means of multipole small-size circuit breaker of the present invention coordinates with tripper, wherein Fig. 5 is the three-dimensional structure diagram of operating means when being in closing of contact position, Fig. 4 and Fig. 5 respectively illustrates operating element 40, actuator lever 16 and the connecting relation that is coupled between two electromagnetic tripping apparatus and two thermal release devices.
Fig. 6 is the hinged exploded perspective explosive view of the operating element 40 of the operating means of multipole small-size circuit breaker of the present invention and actuator lever 16, shows the shape and structure of operating element 40 and actuator lever 16 and the assembly structure between them.
Embodiment
Below in conjunction with the embodiment that Fig. 1 to Fig. 6 provides, further illustrate the embodiment of the operating means of multipole small-size circuit breaker of the present invention.The operating means of multipole small-size circuit breaker of the present invention is not limited to the description of following examples.
As shown in the structural representation of Fig. 1, the operating means of multipole small-size circuit breaker of the present invention is arranged in the insulation shell (not shown) of circuit-breaker, mainly comprises a handle 1, and be coupling the rotating shaft 2 on housing; A U-shaped bar 4 and a rotor plate 5 and on the quadric chain that formed of mechanical interlocking 10, handle 1 is pivoted on the insulation shell of circuit breaker by rotating shaft 2, rotor plate 5 is pivoted on Shell of circuit breaker by axle 14, the two ends of U-shaped bar 4 respectively with handle 1 and trip link 9 hinge-coupled; Trip(ping) bar 13 is pivotally arranged on the second twisted axis 12 of rotor plate 5, and can do restricted rotational movement around this axle; An energy-stored spring (not shown) acts on rotor plate 5, and a return unit (not shown) is ordered about trip(ping) bar 13 and resetted.By artificial or mechanical mode, handle 1 is placed in make position and the open position of circuit-breaker contact, or by a tripper automatic operation.Multipole small-size circuit breaker provided by the invention comprises two groups of switch elements, with two adjacent fixed contacts 22,27 and the moving contact 18,38 that coordinates of closed/disjunction with it, two adjacent electromagnetism trippers 23,23 to short circuit current sensitivity, and two of correspondence Integral small-sized the two poles of the earth circuit breakers to the thermal trip with bimetal leaf 21,21 of overload current sensitivity.Or by two operating means work in coordination with many group switch elements and the electromagnetism tripper of correspondence and the Integral small-sized multipole circuit breaker of thermal trip, this circuit breaker is the circuit breaker that can control multiple independent loop, can be three pole four line circuit breakers, its three poles are three-phase firewire respectively, and another pole is center line; Also can be four-pole circuit breaker, four poles be all with electromagnetism tripper and thermal trip.Also can be applicable to Integral small-sized multipole residual current action breaker.
See Fig. 2-6, the operating means of multipole small-size circuit breaker of the present invention comprises two electromagnetic tripping apparatus be arranged side by side 23 and two thermal release devices be arranged side by side, each electromagnetic tripping apparatus 23 comprises one can send short circuit trip action actuating push rod 24 (see Fig. 4) when short circuit current occurs, when there is short circuit current in the control loop of pole, place, the electromagnetic force of electromagnetic tripping apparatus 23 is ordered about and is activated push rod 24 transverse shifting, namely activates push rod 24 and can send short circuit trip action when short circuit current occurs.Each thermal release device comprises one can send overlond trip action bimetal leaf 21 when overload current occurs, when there is overload current in the control loop of pole, place, the free end of bimetal leaf 21 produces swing displacement because of temperature distortion, namely bimetal leaf 21 can send overlond trip action when overload current occurs.Two electromagnetic tripping apparatus 23 and two thermal release devices can adopt known structure to realize; one of them electromagnetic tripping apparatus and a thermal release device connect with one group of dynamic and static contact series; form the switch element of a pole; for controlling the on/off of a pole and realizing short circuit, the overload protection of a pole; another electromagnetic tripping apparatus and another thermal release device are organized dynamic and static contact series with another and are connected; form the switch element of another pole, for controlling the on/off of another pole and realizing short circuit, the overload protection of another pole.Operating means also comprises the trip link 9 that is provided with latch hook 42 (see Fig. 5), it is pivoted on rotor plate 5 by the first twisted axis 8, and be connected mechanically to described handle 1 by described U-shaped bar 4 in the mode of the shaft contact 3 and 7 shown in Fig. 1, form the transmission device of quadric chain; One is provided with the trip(ping) bar 13 locking tooth 41 (see Fig. 6), and it is pivoted on rotor plate 5 by the second twisted axis 12; Two shorting tab 31,32 (see Fig. 4) be arranged on the operating element 40 of trip(ping) bar 13 are arranged side by side, and touch with the actuating push rod 24 of two electromagnetic tripping apparatus respectively and coordinate; Two overload short columns 29,30 (see Fig. 4) be arranged in the actuator lever 16 of trip(ping) bar 13 are arranged side by side, and touch with the bimetal leaf 21 of two thermal release devices respectively and coordinate; Two contacts be pivoted in axle 14 support 15,35, and they are connected with rotor plate 5 respectively by two travel mechanism; Two contact point arms 17,39 being respectively equipped with described moving contact 18,38 support 15,35 to be fixedly connected with two contacts respectively.
The concrete pivot structure (not shown) that handle 1 is pivoted on Shell of circuit breaker by rotating shaft 2 can have multiple implementation, but regardless of which kind of mode, all must realize such function: handle 1 only has a rotational freedom relative to Shell of circuit breaker, and the limited angle system of the rotation of handle 1, in other words, handle 1 has the position of the "on" position of two respective operations devices and the restriction of gate-dividing state, and these two positions limited also define the rotational angle of handle 1.
Rotor plate 5 adopts following compound hinges structure by the concrete pivot structure that axle 14 is pivoted on Shell of circuit breaker, namely on rotor plate 5, axis hole (not shown) is provided with, this axis hole is sleeved in axle 14 with rotating fit form, and axle 14 and Shell of circuit breaker are fixedly connected.Because two contacts support that 15,35 are also pivoted in axle 14, namely two contacts support that 15,35 are respectively equipped with axis hole (not shown), this axis hole is sleeved in axle 14 with rotating fit form, as can be seen here, same axle 14 is set with the structure that 15,35 and rotor plate 5 is supported in two contacts, has constituted above-mentioned compound hinges structure.This compound hinges structure comprises eccentric structure and concentric structure two kinds of modes, and the present invention is concentric manner preferably, and namely the center of rotation of two contact supports 15,35 and rotor plate 5 is concentric with the axle center of axle 14.Two described contacts supports 15,35 contact with two faces of rotor plate 5 respectively and coordinate, that is, two contact supports 15,35 and rotor plate 5 overlap by this way to install in axle 14: two contact supports 15,35 are not only positioned at the both sides of described rotor plate 5, and two contacts are supported 15,35 to contact with two faces of rotor plate 5 respectively to coordinate, this contact cooperation makes two contacts supports 15,35 and rotor plate 5 can have the degree of freedom in relative rotation, but can not have the degree of freedom of axial endplay.Obviously, design of the present invention overcomes traditional fault of construction that contact is supported only to connect with rotor plate, have employed this compound hinges structure, particularly concentric structure, make the structure of operating means compacter, significantly can reduce the volume of operating means, to meet the requirement of Miniaturization Design.Especially two contacts support 15,35 independently also can rotate symmetrically around same axle 14, effectively ensure that operation precision and the reliability of moving contact, ensure that two moving contacts closed/synchronism of disjunction action, ensure that the consistency of two groups of moving contacts and the contact of fixed contact when closed.
Rotor plate 5 in Fig. 1 and on mechanical interlocking 10 formed by the lock tooth 41 (Fig. 5) on the latch hook 42 (Fig. 5) on trip link 9 and trip(ping) bar 13, by stable combined floodgate or the fault trip of mechanical interlocking 10 control operation device, specifically, latch hook 42 makes mechanical interlocking 10 lock with the contact of lock tooth 41, only under the state of tool interlocking 10 locking, operating means could close a floodgate successfully and can keep the stable of combined floodgate.Latch hook 42 makes mechanical interlocking 10 unlock with being separated of tooth 41 of lock, under "on" position, if mechanical interlocking 10 unlocks, then drive operate devices automatic trip at the elastic force of energy-stored spring (not shown), under mechanical interlocking 10 released state, operating means can not successfully close a floodgate.The locking/unlocking of mechanical interlocking 10 is controlled by the rotation of trip(ping) bar 13 around the second twisted axis 12, and the rotation of trip(ping) bar 13 is by the actuating push rod 24 of electromagnetic tripping apparatus 23, the bimetal leaf 21 of thermal release device, the multiple driving of return unit (not shown), specifically: touch the shorting tab 31 on the operating element 40 on trip(ping) bar 13 when the transverse shifting activating push rod 24, when 32, or the overload short column 29 in the actuator lever 16 on the swing displacement shake-up trip(ping) bar 13 of the free end of bimetal leaf 21, when 30, capital drives the rotation of trip(ping) bar 13, this rotation makes mechanical interlocking 10 unlock, described return unit can provide a flexible elastic force to act on trip(ping) bar 13, and the rotation that the elastic force of this flexibility orders about trip(ping) bar 13 makes mechanical interlocking 10 automatically lock.Described return unit can adopt known structure, and the elastic force of the flexibility of return unit orders about mechanical interlocking 10 and recovers locking and maintain locking.The energy-stored spring acted on rotor plate 5 can adopt known structure, this structure makes energy-stored spring act on elastic force on rotor plate 5, always order about rotor plate 5 to rotate to separating brake direction, that is: in the closing operation process of operating means and under being in "on" position, energy-stored spring stored energy; In the tripping operation process of operating means, energy-stored spring releases energy, and the energy discharged orders about operating means and performs trip operation; Be in separating brake or tripped condition at operating means, energy-stored spring is in fault offset state.
The operating element 40 be arranged on trip(ping) bar 13 can have two kinds of preferred concrete structure modes, that is: described operating element 40 is fixedly connected with trip(ping) bar 13; Or operating element 40 is one-body molded with trip(ping) bar 13.Refer to that operating element 40 and trip(ping) bar 13 are two parts this " being fixedly connected ", operating element 40 is fixed on trip(ping) bar 13 by fixed connection structure, and the advantage of this structure is the position adjustable that can realize between operating element 40 and trip(ping) bar 13." operating element 40 is one-body molded with trip(ping) bar 13 " refers to that operating element 40 is same part with trip(ping) bar 13, and the advantage of this structure is to enhance productivity, and is suitable for large-scale production.Two shorting tab 31,32 of operating element 40 are arranged side by side, and touch with the actuating push rod 24 of two electromagnetic tripping apparatus respectively and coordinate, namely one of them shorting tab 31 touches with the actuating push rod 24 of one of them electromagnetic tripping apparatus and coordinates, and another shorting tab 32 touches with the actuating push rod 24 of a remaining electromagnetic tripping apparatus and coordinates.In order to realize the symmetrical of the actuation force of two actuating push rods 24, the power architecture of Optimum Operation device, a kind of preferred scheme is: described two shorting tab 31,32 are respectively towards two lateral extension formation T-shaped as shown in Figure 6 of operating element 40.Actuator lever 16 on trip(ping) bar 13 and the concrete draw bail between trip(ping) bar 13 have two kinds, one is integrated formed structure, another kind is a point forming structure, a kind of structure preferably, specifically: described operating element 40 or rotor plate 5 are provided with axis hole 33, described actuator lever 16 is provided with pillow block 34, and pillow block 34 inserts axis hole 33 and forms installation connection, can adopt dynamic cooperation or stationary fit between pillow block 34 with axis hole 33.Two overload short columns 29,30 of actuator lever 16 are arranged side by side, and touch with the bimetal leaf 21 of two thermal release devices respectively and coordinate, namely one of them overload short column 29 touches with the bimetal leaf 21 of one of them thermal release device and coordinates, and another overload short column 29 touches with the bimetal leaf 21 of a remaining thermal release device and coordinates.In order to realize the symmetrical of the actuation force of two bimetal leafs 21, the power architecture of Optimum Operation device, a kind of preferred scheme is: described two overload short columns 29,30 are respectively towards two lateral extension formation T-shaped as shown in Figure 6 of actuator lever 16.In order to make the structure of operating means compacter, the power architecture of further Optimum Operation device, a kind of preferred scheme is, positional distance B between described overload short column 29,30 and second twisted axis 12 is greater than the positional distance A between shorting tab 31,32 and second twisted axis 12, namely make the actuation force of bimetal leaf 21 have the longer arm of force than the actuation force activating push rod 24, thus the actuation force of bimetal leaf 21 can be reduced.
Two contacts support 15, 35 are connected with rotor plate 5 respectively by two travel mechanism with identical structure, and two travel mechanism can have multiple concrete structure scheme, and a kind of preferred scheme is: each travel mechanism comprises an excess of stroke spring 19, be arranged on contact and support 15, the first backstop 11 on 35, be arranged on the second backstop 20 on rotor plate 5, be separately positioned on contact and support 15, 35 and rotor plate 5 on formation clutch 6 the first interface (see Fig. 2 and Fig. 3 clutch 6 shown in) and the second interface (see Fig. 2 and Fig. 3 clutch 6 shown in), preferably described two contacts are supported also to be respectively arranged with two torsion springs 19, one end coordinates with described first backstop 11, the other end coordinates with the second backstop 20 on described rotor plate 5, to guarantee that rotor plate 5 is in contact 22, 27, 18, 38 when being in restricted rotational movement between open position and make position, and contact is supported to be formed with rotor plate effectively to engage 6, and as Fig. 1, described torsion spring 19 is in contact 22, 27, 18, 38 in the close position time active force is provided.Specifically, one end of excess of stroke spring 19 connects with the first backstop 11, the other end of excess of stroke spring 19 connects with the second backstop 20, under moving contact 18,38 and fixed contact 22,27 disjunction state, clutch 6 engages, under moving contact 18,38 and fixed contact 22,27 closure state, clutch 6 is separated.First interface can be adopted and be arranged in a known manner in contact support 15,35, and namely each contact is respectively equipped with first interface on supporting.Second interface can adopt the two sides being arranged on rotor plate 5 in a known manner, and namely the two sides of rotor plate 5 is respectively equipped with second interface.When two contacts support that 15,35 and rotor plate 5 cover installs to after in axle 14, two contacts supports 15,35 contact with two faces of rotor plate 5 respectively and coordinate, two clutches 6 are formed thus on the two sides of rotor plate 5, one of them clutch 6 supports that the second interface in the wherein one side of the first interface on 15 and rotor plate 5 is formed by one of them contact, and another clutch 6 supports that the second interface on the another side of the first interface on 35 and rotor plate 5 is formed by another contact.The elastic force of excess of stroke spring 19 orders about clutch 6 and engages, namely order about the first interface to contact with the second interface, therefore, when contact support 15,35 is without External Force Acting, namely, when moving contact 18,38 and fixed contact 22,27 are in disjunction, the first interface contacts with the second interface, and namely clutch 6 engages, this engagement limit contact support 15,35 with the relatively rotating of rotor plate 5, make contact support 15,35 and the relative position of rotor plate 5 stablize and realize linking.Under moving contact 18,38 and fixed contact 22,27 are in closure state, due to the contact of moving contact 18,38 and fixed contact 22,27, make rotor plate 5 turns in making process stroke be greater than contact and support 15,35 strokes (i.e. the excess of stroke) turned over, the elastic force of energy-stored spring overcomes the elastic force of excess of stroke spring 19, order about effectively engagement 6 to be separated, namely the first interface is separated with the second interface.Be not difficult thus to draw, after adopting above-mentioned travel mechanism, the size of the contact between moving contact 18,38 and fixed contact 22,27 depends on the elastic force of excess of stroke spring 19.Act on two contacts supports 15,35 respectively owing to present invention employs two excess of stroke springs 19, therefore can ensure the consistency of the contact of two groups of contacts.
The embodiment that accompanying drawing provides is for the compound mode of the switch element of an operating means and two poles, but the operating means of multipole small-size circuit breaker of the present invention is not limited thereto mode, can be by the compound mode of the switch element of multiple operating means and more pole, as the compound mode of the switch element by 2 operating means and 4 poles.In order to make plural operating means be arranged side by side compactly and collaborative work, a kind of optional scheme is that described operating element 40 and actuator lever 16 are supported in the interval D between 15,35 two contacts.Obviously, this layout structure, makes the width dimensions of operating means be no more than the width of the switch element that two are arranged side by side, and is conducive to realizing multiple operating means being evenly arranged in multipole circuit breaker front, and the interlock between each operating means is coordinated reliable.
Below in conjunction with Fig. 2-Fig. 4, further illustrate the operating process of the operating means of multipole small-size circuit breaker of the present invention.
Normal making process:
From the separating brake shown in Fig. 2 or tripped condition, manually or automatically during device urged clockwise handle 12 rotation around the shaft, mechanical interlocking 10 is made to be in locking because the latch hook 42 of trip link 9 engages with the lock tooth 41 of trip(ping) bar 13, so handle 1 drives U-shaped bar 4 and makes U-shaped bar 4 promote trip link 9, trip(ping) bar 13 rotates clockwise around axle 14 together with rotor plate 5, rotor plate 5 drives two contacts to support 15 by the engagement of the clutch 6 of travel mechanism, 35 together rotate, contact supports 15, 35 drive two moving contacts 18, 38 simultaneously to two fixed contacts 22, 27 close, until two moving contacts 18, 38 respectively with two fixed contacts 22, 27 contacts, operating means enters the "on" position shown in Fig. 3, in this case, two clutches 6 are all separated, the contact that two excess of stroke springs 19 provide necessary to respectively two groups of contacts, simultaneously, the energy-stored spring be arranged on rotor plate completes compressed energy-storage.
Normal separating brake process:
From the normal "on" position shown in Fig. 3, manually or automatically during 2 rotation around the shaft of the counterclockwise driving handle 1 of device, mechanical interlocking 10 is made to be in locking because the latch hook 42 of trip link 9 engages with the lock tooth 41 of trip(ping) bar 13, so handle 1 drives U-shaped bar 4 and makes U-shaped bar 4 promote trip link 9, trip(ping) bar 13 rotates counterclockwise around axle 14 together with rotor plate 5, the rotation of rotor plate 5 first makes clutch 6 all engage, and then drive two contacts to support 15 by the clutch 6 of engagement, 35 together rotate, contact supports 15, 35 drive two moving contacts 18, 38 simultaneously to away from two fixed contacts 22, 27 are separated, until two moving contacts 18, 38 respectively with two fixed contacts 22, 27 separation put in place, operating means enters the gate-dividing state shown in Fig. 2, in this case, energy-stored spring releases energy.
Short circuit tripping operation process:
Under the normal "on" position shown in Fig. 3, if the electromagnetic tripping apparatus 23 of any one coupled in series in control loop has short circuit current to flow through, then the actuating push rod 24 of the electromagnetic tripping apparatus 23 at short circuit current instantaneous excitation place produces the trip action of transverse shifting, then shorting tab 31 or 32 action is touched, this action makes trip(ping) bar 13 by counterclockwise rotating around the second twisted axis 12, and the latch hook 42 of the lock tooth 41 and trip link 9 that order about trip(ping) bar 13 is separated, mechanical interlocking 10 is caused to unlock, energy-stored spring releases energy, the elastic force of energy-stored spring orders about rotor plate 5 and rotates, the rotation of rotor plate 5 first makes clutch 6 all engage, and then drive two contacts to support 15 by the clutch 6 of engagement, 35 together rotate, contact supports 15, 35 drive two moving contacts 18, 38 simultaneously to away from two fixed contacts 22, 27 are separated, until two moving contacts 18, 38 respectively with two fixed contacts 22, 27 separation put in place, operating means enters the tripped condition shown in Fig. 2.
Overload trip process:
Under the normal "on" position shown in Fig. 3, if the thermal release device of any one coupled in series in control loop has overload current to flow through, then overload current can make bimetal leaf 21 flexural deformation as trip gear at place, produce the trip action that free end swings, the trip action of bimetal leaf 21 touches the action of overload short column 29 or 30, this action makes trip(ping) bar 13 by counterclockwise rotating around the second twisted axis 12, and the latch hook 42 of the lock tooth 41 and trip link 9 that order about trip(ping) bar 13 is separated, mechanical interlocking 10 is caused to unlock, energy-stored spring releases energy, the elastic force of energy-stored spring orders about rotor plate 5 and rotates, the rotation of rotor plate 5 first makes clutch 6 all engage, and then drive two contacts to support 15 by the clutch 6 of engagement, 35 together rotate, contact supports 15, 35 drive two moving contacts 18, 38 simultaneously to away from two fixed contacts 22, 27 are separated, until two moving contacts 18, 38 respectively with two fixed contacts 22, 27 separation put in place, operating means enters the tripped condition shown in Fig. 2.
The foregoing is only preferred embodiment of the present invention, all technical equivalences made according to the claims in the present invention change and amendment, all should be considered as within covering scope of the present invention.
Claims (10)
1. an operating means for multipole small-size circuit breaker, comprise the handle (1) be pivoted on by rotating shaft (2) on Shell of circuit breaker, be pivoted on the rotor plate (5) on Shell of circuit breaker by axle (14), two fixed contacts (22,27) and two respectively/disjunction closed with fixed contact (22,27) coordinate moving contact (18,38), one act on energy-stored spring on rotor plate (5) and a return unit ordering about trip(ping) bar (13) and reset; And the electromagnetic tripping apparatus that two are arranged side by side (23), each electromagnetic tripping apparatus comprises one can send short circuit trip action actuating push rod (24) when short circuit current occurs; Two thermal release devices be arranged side by side, each thermal release device comprises one can send overlond trip action bimetal leaf (21) when overload current occurs;
It is characterized in that, described operating means also comprises:
A trip link (9) being provided with latch hook (42), is pivoted on rotor plate (5) by the first twisted axis (8);
A trip(ping) bar (13), which is provided with lock tooth (41), the operating element (40) that can coordinate with two neighboring pole circuit breaker electromagnetic tripping apparatus respectively and the actuator lever (16) that can coordinate with the bimetal leaf of two neighboring pole breaker thermal trip gear respectively, described trip(ping) bar (13) is pivoted on rotor plate (5) by the second twisted axis (12), and can do restricted rotational movement around the second twisted axis (12);
Its two ends respectively with the U-shaped bar (4) of handle (1) and trip link (9) hinge-coupled, described trip link (9) can be ordered about and do counterclockwise or clockwise movement around the first twisted axis (8);
Two are disposed side by side on the shorting tab (31,32) on the operating element (40) of described trip(ping) bar (13), and they touch with the actuating push rod (24,24) of described two electromagnetic tripping apparatus (23) respectively and coordinate;
Two are disposed side by side on the overload short column (29,30) in the actuator lever (16) of described trip(ping) bar (13), and they touch with the bimetal leaf (21,21) of described two thermal release devices respectively and coordinate.
2. the operating means of multipole small-size circuit breaker according to claim 1, is characterized in that: described operating element (40) and trip(ping) bar (13) are fixedly connected; Or described operating element (40) is one-body molded with trip(ping) bar (13).
3. the operating means of multipole small-size circuit breaker according to claim 1, it is characterized in that: described operating element (40) or trip(ping) bar (13) are provided with axis hole (33), described actuator lever (16) is provided with pillow block (34), and described pillow block (34) inserts axis hole (33) formation installation connection; Or described operating element (40) or trip(ping) bar (13) are one-body molded with actuator lever (16).
4. the operating means of multipole small-size circuit breaker according to claim 1, is characterized in that:
The upper pivotable of described axle (14) is provided with two contacts and supports (15,35), and they connect with described rotor plate (5) respectively by two travel mechanism;
Described two moving contacts (18,38) are separately positioned on a corresponding contact point arm (17,39), with two contacts, they support that (15,35) are fixedly connected respectively.
5. the operating means of multipole small-size circuit breaker according to claim 4, is characterized in that:
Each travel mechanism comprises an excess of stroke spring (19), be arranged on contact and support (15, 35) the first backstop (11) on, be arranged on the second backstop (20) on rotor plate (5) and be separately positioned on contact and support (15, 35) the first interface of the formation clutch (6) and on rotor plate (5) and the second interface, one end of excess of stroke spring (19) connects with the first backstop (11), the other end of excess of stroke spring (19) connects with the second backstop (20), at moving contact (18, 38) with fixed contact (22, 27) under disjunction state, described clutch (6) engagement, at moving contact (18, 38) with fixed contact (22, 27) under closure state, described clutch (6) is separated,
Two described contacts support that the center of rotation of (15,35) and rotor plate (5) is all concentric with the axle center of axle (14).
6. the operating means of multipole small-size circuit breaker according to claim 1, is characterized in that: the positional distance B between described overload short column (29,30) and the second twisted axis (12) is greater than the positional distance A between described shorting tab (31,32) and the second twisted axis (12).
7. the operating means of multipole small-size circuit breaker according to claim 4, is characterized in that: described operating element (40) and actuator lever (16) are positioned at the interval D between two described contacts support (15,35).
8. the operating means of multipole small-size circuit breaker according to claim 1, is characterized in that: described two shorting tab (31,32) form T-shaped towards two lateral extension of described operating element (40) respectively.
9. the operating means of multipole small-size circuit breaker according to claim 1, is characterized in that: described two overload short columns (29,30) form T-shaped towards two lateral extension of described actuator lever (16) respectively.
10. the operating means of multipole small-size circuit breaker according to claim 4, is characterized in that: two described contacts are supported that (15,35) contact with two faces of rotor plate (5) respectively and coordinated.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341341.5A CN104134588B (en) | 2014-07-17 | 2014-07-17 | A kind of operating means of multipole small-size circuit breaker |
| EP15821567.3A EP3171385B1 (en) | 2014-07-17 | 2015-01-28 | Operation device of multi-pole miniature circuit breaker |
| KR1020177004397A KR101929302B1 (en) | 2014-07-17 | 2015-01-28 | Operation device of multi-pole miniature circuit breaker |
| PCT/CN2015/071748 WO2016008298A1 (en) | 2014-07-17 | 2015-01-28 | Operation device of multi-pole miniature circuit breaker |
| AU2015291700A AU2015291700B2 (en) | 2014-07-17 | 2015-01-28 | Operation device of multi-pole miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341341.5A CN104134588B (en) | 2014-07-17 | 2014-07-17 | A kind of operating means of multipole small-size circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104134588A CN104134588A (en) | 2014-11-05 |
| CN104134588B true CN104134588B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410341341.5A Active CN104134588B (en) | 2014-07-17 | 2014-07-17 | A kind of operating means of multipole small-size circuit breaker |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3171385B1 (en) |
| KR (1) | KR101929302B1 (en) |
| CN (1) | CN104134588B (en) |
| AU (1) | AU2015291700B2 (en) |
| WO (1) | WO2016008298A1 (en) |
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|---|---|---|---|---|
| CN104134588B (en) * | 2014-07-17 | 2016-03-02 | 正泰集团股份有限公司 | A kind of operating means of multipole small-size circuit breaker |
| FR3036000B1 (en) * | 2015-05-07 | 2017-04-21 | Schneider Electric Ind Sas | DEVICE FOR CONTROLLING AN ELECTRICAL PROTECTION DEVICE AND ELECTRICAL PROTECTION APPARATUS COMPRISING IT |
| CN105977079B (en) * | 2016-06-30 | 2024-02-06 | 江苏大全高压开关有限公司 | Intermediate and high voltage circuit breaker and load switch overtravel debugging tool and method |
| CN105977110B (en) * | 2016-07-19 | 2019-03-26 | 浙江创奇电气有限公司 | The U-shape lock button and operating mechanism and its breaker of anti-false tripping in operating mechanism |
| CN106971921B (en) * | 2017-04-17 | 2019-10-01 | 乐清市沃斯托电气有限公司 | Breaker |
| CN107863281A (en) * | 2017-12-07 | 2018-03-30 | 厦门安达兴电气集团有限公司 | A kind of rotary type links double acting contact mechanism and switch disconnector |
| CN108288570B (en) * | 2017-12-22 | 2024-02-13 | 上海诺雅克电气有限公司 | Tripping device of circuit breaker |
| CN108878226B (en) * | 2018-07-13 | 2024-05-17 | 浙江正泰电器股份有限公司 | Circuit breaker |
| CN109256258A (en) * | 2018-11-15 | 2019-01-22 | 特变电工沈阳变压器集团有限公司 | A kind of distribution transforming transformer of overload protection type |
| CN109273330B (en) * | 2018-11-16 | 2024-01-30 | 加西亚电子电器股份有限公司 | Double-contact breaker |
| US10984974B2 (en) * | 2018-12-20 | 2021-04-20 | Schneider Electric USA, Inc. | Line side power, double break, switch neutral electronic circuit breaker |
| CN109686626B (en) * | 2018-12-28 | 2024-05-07 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
| CN110071022B (en) * | 2019-05-14 | 2023-11-07 | 浙江创奇电气有限公司 | Compact structure's miniature circuit breaker |
| CN111540649A (en) * | 2020-06-01 | 2020-08-14 | 浙江零壹智能电器研究院有限公司 | Miniature circuit breaker, locking and tripping system and locking and tripping method |
| CN113314372B (en) * | 2021-05-24 | 2022-08-26 | 嘉兴京硅智能技术有限公司 | Rotary action mechanism |
| CN113782377B (en) * | 2021-09-03 | 2023-12-26 | 浙江奔一新能源有限公司 | Rotary switch capable of being rapidly cut off |
| CN113823536A (en) * | 2021-11-04 | 2021-12-21 | 贵州泰永长征技术股份有限公司 | Intelligent miniature circuit breaker control method |
| CN114171356B (en) * | 2021-11-30 | 2023-07-21 | 国网江苏省电力有限公司盐城供电分公司 | Double-tripping mechanism applied to circuit breaker |
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- 2015-01-28 KR KR1020177004397A patent/KR101929302B1/en active IP Right Grant
- 2015-01-28 EP EP15821567.3A patent/EP3171385B1/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| AU2015291700B2 (en) | 2018-07-05 |
| EP3171385A4 (en) | 2018-02-21 |
| KR101929302B1 (en) | 2018-12-14 |
| EP3171385B1 (en) | 2018-09-19 |
| EP3171385A1 (en) | 2017-05-24 |
| WO2016008298A1 (en) | 2016-01-21 |
| KR20170068430A (en) | 2017-06-19 |
| AU2015291700A1 (en) | 2017-03-09 |
| CN104134588A (en) | 2014-11-05 |
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