CN104134588A - Operation device of miniature multi-pole circuit breaker - Google Patents
Operation device of miniature multi-pole circuit breaker Download PDFInfo
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- CN104134588A CN104134588A CN201410341341.5A CN201410341341A CN104134588A CN 104134588 A CN104134588 A CN 104134588A CN 201410341341 A CN201410341341 A CN 201410341341A CN 104134588 A CN104134588 A CN 104134588A
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- circuit breaker
- trip
- operating means
- rotor plate
- 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
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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
- H01H71/12—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 invention discloses an operation device of a miniature multi-pole circuit breaker. The operation device comprises a handle, a rotary plate mounted on a housing in a pivoting manner by a mandrel, two pairs of contacts capable of performing closing/breaking matching, two electromagnetic tripping devices arranged side by side, and two thermal tripping devices arranged side by side, wherein a tripping connecting rod provided with a lock hook is mounted on the rotary plate in a pivoting manner by a first twisting shaft; a lock tooth, a control element capable of being matched with the electromagnetic tripping devices of the adjacent two-pole circuit breaker, and an actuating rod capable of being matched with bimetallic strips of the thermal tripping devices of the adjacent two-pole circuit breaker are arranged on a tripping rod which is mounted on the rotary plate in a pivoting manner by a second twisting shaft; the two ends of a U-shaped rod are connected with the handle and a hinge of the tripping connecting rod respectively; two short-circuit short columns arranged on the control element side by side are matched with actuating ejection rods of the two electromagnetic tripping devices in a triggering manner respectively; and two overload short columns arranged on the actuating rod side by side are matched with the bimetallic strips of the two thermal tripping devices in a triggering manner respectively. The tripping rod can be controlled by the two adjacent groups of independent tripping devices; and the operation device is small in size, compact in structure and more reliable in motion.
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 collaborative with breaker unit, the two poles of the earth circuit breaker that circuit breaker can be made up of with the sets of contacts of cut-offfing associated with operating means heat, electromagnetic tripping apparatus can be also 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 to have short-circuit protection and overload protection function simultaneously, in addition often also has the demand of aftercurrent action protecting, for this reason, the assembled structure of the most employings of existing multipole small-size circuit breaker, be assembled into a multipole small-size circuit breaker with multiple one pole miniature circuit breakers, as disclosed in Chinese patent CN1013816B " operating mechanism of low-voltage power circuit breaker " and Chinese patent CN1018684B disclosed " a kind of operating mechanism of miniature circuit breaker " etc., be characterized in having in the shell of each one pole miniature circuit breaker one independently operating means and a pair of have disconnect and the separable dynamic/static contact group of make position, 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, operating mechanism can only be controlled the closed and disconnected in a utmost point circuit breaker loop.Existing operating mechanism is closure/disjunction action of two moving contacts of enable operation, but these two moving contacts are also the switch contact in same control loop, and can not be as two utmost point contacts controlling two different circuits.As disclosed in Chinese patent CN1033833C " for the operating mechanism with swing arm of a phase line and neutral circuit circuit breaker ", 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 the closure/disjunction of two moving contacts and fixed contact, but should understand, its dual switch element being made up of two moving contacts and two fixed contacts is in respectively in phase alignment circuit and neutral circuit, and in the time of actual motion, phase alignment circuit and neutral circuit are connected in same loop by load, therefore, this circuit breaker that only has a set of electromagnetic tripping apparatus and thermal release device is not real double-pole cut-out, can not be used for operating the closure/disjunction of two independent loops, and multipole circuit breaker must have a set of electromagnetic tripping apparatus and thermal release device by each utmost point.
Circuit breaker application practice proves, existing operating mechanism in order to the conforming requirement of contact force between each utmost point that the flexible apparatus of contact force can not meet multipole circuit breaker to be provided, reason be its spring action in the elastic force of shank respectively and two contact supporting plates act on the arm of force between the active force of shank and be difficult to realize and equate, therefore, although the elastic force of suffered spring energy balance on two contact supporting plates, but can not equate, contact while making thus two moving contacts on two contact supporting plates closed with two fixed contacts is respectively unequal, for this reason, each utmost point of existing multipole small-size circuit breaker is provided with an independently operating means.Operating mechanism described in above-mentioned patent, or only control utmost point 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 dwindle the volume of circuit breaker, also refer to its width dimensions, particularly the width dimensions modulus of multipole circuit breakers more than the two poles of the earth significantly dwindles, to save the expensive real estate of the terminal control case that circuit breaker is installed, and there is key effect for the current specification that promotes circuit breaker.If adopt aforesaid operations mechanism technology, the two poles of the earth circuit breaker needs two parallel being arranged in juxtaposition of operating mechanism, and multipole circuit breaker needs that multiple operating mechanisms are parallel to be arranged in juxtaposition, and obviously cannot realize an urgent demand day by day of circuit breaker miniaturization and high breaking.If but two extremely shared operating means, the i.e. moving contact of two utmost points of an operating means control and the closure/disjunction of fixed contact, obviously can dwindle the volume of circuit breaker, but existing multipole or one pole miniature circuit breaker is under the constraint of modularization standard, its structure is very compact, in crowded inner space, need to solve following technical problem: the one, operating means must two moving contacts of Synchronization Control respectively with two fixed contact closure/disjunctions, and the contact of two moving contacts during with two fixed contacts closures equates; The 2nd, operating means must be respectively and two electromagnetic tripping apparatus mechanical couplings, and wherein the dropout action of any one electromagnetic tripping apparatus can reliably cause the operating means tripping operation of threading off; The 3rd, operating means must be respectively and two thermal release device mechanical couplings, and wherein the dropout action of any one thermal release device can reliably cause the operating means tripping operation of threading off.Therefore, solve above-mentioned these technical problems, must carry out overall miniaturization structure optimal design 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, not only can operate two groups of moving contacts of two utmost points and the closure/disjunction of fixed contact simultaneously, realize simultaneously and the functional effects of two electromagnetic tripping apparatus and two thermal release device couplings, 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 by rotating shaft 2 be pivoted on handle 1 on Shell of circuit breaker, by axle 14 be pivoted on rotor plate on Shell of circuit breaker 5, two fixed contacts 22,27 and two moving contacts that coordinate with fixed contact 22,27 closures/disjunction respectively 18,38, one act on energy-stored spring on rotor plate 5 and one and order about the return unit that trip(ping) bar 13 resets; And two electromagnetic tripping apparatus that are arranged side by side 23, each electromagnetic tripping apparatus comprises an actuating push rod 24 that can send short circuit dropout action in the time that short circuit current occurs; Two thermal release devices that are arranged side by side, each thermal release device comprises a bimetal leaf 21 that can send overlond trip action in the time that overload current occurs.Described operating means also comprises: one is provided with the trip link 9 of latch hook 42, is pivoted on rotor plate 5 by the first twisted axis 8; A trip(ping) bar 13, the actuator lever 16 which is provided with lock tooth 41, the operating element 40 that can coordinate with two neighboring pole circuit breaker electromagnetism trip gear respectively and 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 limited rotation around this axle; Its two ends respectively with the U-shaped bar 4 of handle 1 and trip link 9 hinge-coupled, can order about described trip link 9 and do counterclockwise or motion clockwise around the first twisted axis 8; Two short circuit short columns 31,32 that are arranged side by side on the operating element 40 of described trip(ping) bar 13, they touch and coordinate with the actuating push rod 24,24 of described two electromagnetic tripping apparatus 23 respectively; Two overload short columns 29 and 30 that are arranged side by side in the actuator lever 16 of described trip(ping) bar 13, they touch and coordinate with the bimetal leaf 21,21 of described two thermal release devices respectively.
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, and described actuator lever 16 is provided with pillow block 34, and described pillow block 34 inserts axis hole 33 and forms to install and connect.
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 by two travel mechanism respectively; Described two moving contacts 18,38 are separately positioned on a corresponding contact point arm 17,39, and they support that with two contacts 15,35 are fixedly connected respectively.
According to another execution mode of the present invention: described contact point arm 17,39 supports that with contact 15,35 is one-body molded respectively.
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 and second interface of formation clutch 6, 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 separates, 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 the second twisted axis 12 is greater than the positional distance A between described short circuit short column 31,32 and the 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 in two described contacts.
According to another embodiment of the invention: described two short circuit short columns 31,32 form T word shapes 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 word shapes towards two lateral extension of described actuator lever 16 respectively.
According to present invention further optimization mode: two described contacts support that 15,35 contact cooperation with two faces of rotor plate 5 respectively.
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 can significantly reduce to have the width dimensions of modularization requirement, and effectively reduce the actuating force of both sides electromagnetism tripper, the thermal cut-out power that bimetal leaf produces in overload current situation is reduced as much as possible, make operating means action more reliable, make, in realizing the miniaturization of multipole small-size circuit breaker, can also promote the current specification of miniature circuit breaker.
Brief description of the drawings
From the description of accompanying drawing illustrated embodiment, can more clearly find out advantages and features of the invention, 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 moving contact and the planar structure schematic diagram of fixed contact in disjunction state of the operating means of multipole small-size circuit breaker of the present invention.
Fig. 3 is moving contact and the planar structure schematic diagram of fixed contact in closure state of the operating means of multipole small-size circuit breaker of the present invention.
Fig. 4 and Fig. 5 are 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 in the time of closing of contact position, and Fig. 4 and Fig. 5 show respectively the coupling connecting relation between operating element 40, actuator lever 16 and two electromagnetic tripping apparatus and two thermal release devices.
Fig. 6 is operating element 40 and the hinged three-dimensional explosive view of part of actuator lever 16 of the operating means of multipole small-size circuit breaker of the present invention, shows the shape and structure of operating element 40 and actuator lever 16 and the assembly structure between them.
Embodiment
The embodiment providing below in conjunction with Fig. 1 to Fig. 6, further illustrates 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, the rotating shaft 2 being coupling on housing; U-shaped bar 4 and rotor plate 5 and on the quadric chain that forms of mechanical interlocking 10, handle 1 is pivoted on by rotating shaft 2 on the insulation shell of circuit breaker, 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 limited rotation 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.Can handle 1 be placed in by artificial or mechanical mode to 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 closure/disjunction coordinates with it moving contact 18,38, two adjacent electromagnetism trippers 23,23 to short circuit current sensitivity, and Integral small-sized the two poles of the earth circuit breaker of corresponding two thermal trips with bimetal leaf 21,21 to overload current sensitivity.Or by two operating means collaborative with many group switch elements and corresponding electromagnetism tripper and the Integral small-sized multipole circuit breakers of thermal trip, this circuit breaker is the circuit breaker that can control multiple independent loops, can be three utmost point four line circuit breakers, its three utmost points are respectively three-phase firewires, and another utmost point is center line; Also can be four-pole circuit breaker, four utmost points be all with electromagnetism tripper and thermal trip.Also can be applicable to the multipole residual current action breaker of Integral small-sizedization.
Referring to Fig. 2-6, the operating means of multipole small-size circuit breaker of the present invention comprises two electromagnetic tripping apparatus that are arranged side by side 23 and two thermal release devices that are arranged side by side, each electromagnetic tripping apparatus 23 comprises an actuating push rod 24 (referring to Fig. 4) that can send short circuit dropout action in the time that short circuit current occurs, there is short circuit current in the control loop of the place utmost point time, the electromagnetic force of electromagnetic tripping apparatus 23 is ordered about and is activated push rod 24 transverse shiftings, activates push rod 24 and in the time that short circuit current occurs, can send short circuit dropout action.Each thermal release device comprises a bimetal leaf 21 that can send overlond trip action in the time that overload current occurs, there is overload current in the control loop of the place utmost point time, the free end of bimetal leaf 21 produces swing displacement because of temperature distortion, and bimetal leaf 21 can send overlond trip action in the time that 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 and one group of dynamic and static contact coupled in series; form the switch element of a utmost point; for controlling the on/off and short circuit, the overload protection of realizing a utmost point of a utmost point; another electromagnetic tripping apparatus is organized dynamic and static contact coupled in series with another thermal release device and another; form the switch element of another utmost point, for controlling the on/off and short circuit, the overload protection of realizing another utmost point of another utmost point.Operating means also comprises a trip link 9 that is provided with latch hook 42 (referring to 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 of lock tooth 41 (referring to Fig. 6), and it is pivoted on rotor plate 5 by the second twisted axis 12; Short circuit short column 31,32 (referring to Fig. 4) on two operating elements 40 that are arranged on trip(ping) bar 13 is arranged side by side, and touches and coordinate with the actuating push rod 24 of two electromagnetic tripping apparatus respectively; Overload short column 29,30 (referring to Fig. 4) in two actuator lever 16 that are arranged on trip(ping) bar 13 is arranged side by side, and touches and coordinate with the bimetal leaf 21 of two thermal release devices respectively; Two contacts that are pivoted in axle 14 support 15,35, and they connect with rotor plate 5 respectively by two travel mechanism; Two contact point arms 17,39 that are respectively equipped with described moving contact 18,38 support that with two contacts 15,35 are fixedly connected 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 no matter which kind of mode, all must realize such function: handle 1 only has a rotational freedom with respect to Shell of circuit breaker, and the angle of the rotation of handle 1 is restricted, 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 the position of these two restrictions also defines the rotational angle of handle 1.
The concrete pivot structure that rotor plate 5 is pivoted on Shell of circuit breaker by axle 14 adopts following compound hinges structure, on rotor plate 5, be provided with axis hole (not shown), this axis hole is sleeved in axle 14 with rotating fit form, and axle 14 is fixedly connected with Shell of circuit breaker.Because two contacts support that 15,35 are also pivoted in axle 14, 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, the structure that has been set with two contact supports 15,35 and a rotor plate 5 in same axle 14, has formed above-mentioned compound hinges structure.This compound hinges structure comprises eccentric structure and two kinds of modes of concentric structure, and the preferred mode of the present invention is concentric manner, two contacts support 15,35 and the center of rotation of rotor plate 5 concentric with the axle center of axle 14.Two described contacts support that 15,35 contact cooperation with two faces of rotor plate 5 respectively, that is to say, two contacts support 15,35 and rotor plate 5 be to overlap by this way to install in axle 14: two contacts support 15,35 to be not only positioned at the both sides of described rotor plate 5, and two contacts support that 15,35 contact cooperation with two faces of rotor plate 5 respectively, 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 has overcome contact and has supported the traditional fault of construction only connecting with rotor plate, has adopted this compound hinges structure, particularly concentric structure, make the structure of operating means compacter, can significantly reduce the volume of operating means, to meet the requirement of Miniaturization Design.Especially two contacts support that 15,35 can be around the independent also rotation symmetrically of same axle 14, operation precision and the reliability of moving contact are effectively guaranteed, guarantee the synchronism of the closure of two moving contacts/disjunction action, guaranteed the consistency of two groups of moving contacts and the contact of fixed contact in the time of closure.
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 devices, specifically, latch hook 42 locks mechanical interlocking 10 with contacting of tooth 41 of lock, only, under the state of tool interlocking 10 lockings, operating means could close a floodgate successfully and can keep the stable of combined floodgate.Latch hook 42 makes mechanical interlocking 10 releases with separating of tooth 41 of lock, under "on" position, if mechanical interlocking 10 releases drive operate devices automatic trip at the elastic force of energy-stored spring (not shown), under mechanical interlocking 10 released states, operating means can not successfully close a floodgate.The locking/unlocking of mechanical interlocking 10 is around the rotation control of the second twisted axis 12 by trip(ping) bar 13, and the rotation of trip(ping) bar 13 is the actuating push rods 24 by electromagnetic tripping apparatus 23, the bimetal leaf 21 of thermal release device, the multiple driving of return unit (not shown), specifically: when the transverse shifting that activates push rod 24 touches the short circuit short column 31 on the operating element 40 on trip(ping) bar 13, 32 o'clock, or when the free-ended swing displacement of bimetal leaf 21 touches the overload short column 29 in the actuator lever 16 on trip(ping) bar 13, 30 o'clock, capital drives the rotation of trip(ping) bar 13, this rotation makes mechanical interlocking 10 releases, described return unit can provide a flexible elastic force to act on trip(ping) bar 13, and the rotation that this flexible elastic force orders about trip(ping) bar 13 automatically locks mechanical interlocking 10.Described return unit can adopt known structure, and the flexible elastic force of return unit orders about mechanical interlocking 10 and recovers locking and maintain locking.The energy-stored spring acting on rotor plate 5 can adopt known structure, this structure makes energy-stored spring act on the elastic force on rotor plate 5, always order about rotor plate 5 and rotate to separating brake direction, that is: neutralize under "on" position energy-stored spring stored energy in the closing operation process of operating means; In the tripping operation process of operating means, energy-stored spring releases energy, and the energy discharging orders about operating means and carries out tripping operation action; At operating means, in separating brake or tripped condition, energy-stored spring is in energy release condition.
The operating element 40 being 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 this " being fixedly connected " operating element 40 and trip(ping) bar 13 are two parts, operating element 40 is fixed on trip(ping) bar 13 by fixed connection structure, and the advantage of this structure is to realize the position adjustable 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 and trip(ping) bar 13 are same part, and the advantage of this structure is to enhance productivity, and is suitable for large-scale production.Two short circuit short columns 31,32 of operating element 40 are arranged side by side, and touch and coordinate with the actuating push rod 24 of two electromagnetic tripping apparatus respectively, be that one of them short circuit short column 31 touches and coordinates with the actuating push rod 24 of one of them electromagnetic tripping apparatus, another short circuit short column 32 touches and coordinates with the actuating push rod 24 of a remaining electromagnetic tripping apparatus.In order to realize actuation force symmetrical of two actuating push rods 24, the power architecture of Optimum Operation device, a kind of preferred scheme is: described two short circuit short columns 31,32 form T word shape as shown in Figure 6 towards two lateral extension of operating element 40 respectively.Concrete draw bail between actuator lever 16 and trip(ping) bar 13 on trip(ping) bar 13 has 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 moving cooperation or stationary fit between pillow block 34 and axis hole 33.Two overload short columns 29,30 of actuator lever 16 are arranged side by side, and touch and coordinate with the bimetal leaf 21 of two thermal release devices respectively, be that one of them overload short column 29 touches and coordinates with the bimetal leaf 21 of one of them thermal release device, another overload short column 29 touches and coordinates with the bimetal leaf 21 of a remaining thermal release device.In order to realize actuation force symmetrical 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 form T word shape as shown in Figure 6 towards two lateral extension of actuator lever 16 respectively.In order to make the structure of operating means compacter, the further power architecture of Optimum Operation device, a kind of preferred scheme is, positional distance B between described overload short column 29,30 and the second twisted axis 12 is greater than the positional distance A between short circuit short column 31,32 and the second twisted axis 12, make the actuation force of bimetal leaf 21 there is the longer arm of force than the actuation force that activates push rod 24, thereby can reduce the actuation force of bimetal leaf 21.
Two contacts support 15, 35 connect 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 first interface (see Fig. 2 and Fig. 3 clutch 6 shown in) of formation clutch 6 and the second interface (see Fig. 2 and Fig. 3 clutch 6 shown in), preferably described two contacts are supported to be also respectively arranged with two torsion springs 19, torsion spring one end coordinates with described the 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 between open position and make position when limited rotation, and contact is supported to form and effectively engage 6 with rotor plate, and as Fig. 1, described torsion spring 19 is in contact 22, 27, 18, 38 provide active force time in the close position.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 states, clutch 6 engages, under moving contact 18,38 and fixed contact 22,27 closure states, clutch 6 separates.The first interface can be adopted and be arranged in a known manner in contact support 15,35, and each contact is respectively equipped with first interface on supporting.The second interface can be adopted the two sides that is arranged in a known manner rotor plate 5, and the two sides of rotor plate 5 is respectively equipped with second interface.When two contacts support 15,35 and after rotor plate 5 covers install in axle 14, two contacts support that 15,35 contact cooperation with two faces of rotor plate 5 respectively, form two clutches 6 on the two sides of rotor plate 5 thus, one of them clutch 6 is to be made up of the second interface in the wherein one side of the first interface in one of them contact support 15 and rotor plate 5, and another clutch 6 is to be made up of the second interface on the another side of the first interface in another contact support 35 and rotor plate 5.The elastic force of excess of stroke spring 19 orders about clutch 6 and engages, ordering about the first interface contacts with the second interface, therefore, support that in contact 15,35 during without External Force Acting, be moving contact 18,38 and fixed contact 22,27 in the time of disjunction, the first interface contacts with the second interface, clutch 6 engages, this engagement has limited relatively rotating of contact support 15,35 and rotor plate 5, makes the relative position of contact support 15,35 and rotor plate 5 stablize and realize and linking.At moving contact 18,38 and fixed contact 22,27 under closure state, due to contacting of moving contact 18,38 and fixed contact 22,27, make the stroke that rotor plate 5 turns in making process be greater than contact support 15,35 strokes that turn over (being the excess of stroke), the elastic force of energy-stored spring overcomes the elastic force of excess of stroke spring 19, order about effective engagement 6 and separate, the first interface separates with the second interface.Be not difficult thus to draw, adopt after 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.Support 15,35 because the present invention has adopted two excess of stroke springs 19 to act on respectively two contacts, therefore can ensure the consistency of the contact of two groups of contacts.
The embodiment that accompanying drawing provides is taking the compound mode of the switch element of an operating means and two utmost points as example, but the operating means of multipole small-size circuit breaker of the present invention is not limited to this mode, can be the compound mode by the switch element of multiple operating means and the more utmost points, as the compound mode of the switch element by 2 operating means and 4 utmost points.For plural operating means can be arranged side by side and collaborative work compactly, a kind of optional scheme is that described operating element 40 and actuator lever 16 are in the interval D between 15,35 is supported in two contacts.Obviously, this layout structure, makes the width dimensions of operating means be no more than the width of two switch elements that are arranged side by side, and is conducive to realize multiple operating means being evenly arranged of multipole circuit breaker front, and 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, while installing manually or automatically 2 rotation around the shaft of clockwise driving handle 1, because engaging, the latch hook 42 of trip link 9 and the lock tooth 41 of trip(ping) bar 13 make mechanical interlocking 10 in locking, so handle 1 drives U-shaped bar 4 and make U-shaped bar 4 promote trip link 9, trip(ping) bar 13 clockwise rotates 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 closures, until two moving contacts 18, 38 respectively with two fixed contacts 22, 27 contacts, operating means enters the "on" position shown in Fig. 3, under this state, two clutches 6 all separate, two excess of stroke springs 19 provide necessary contact to respectively two groups of contacts, simultaneously, the energy-stored spring being arranged on rotor plate completes compressed energy-storage.
Normal separating brake process:
From the normal "on" position shown in Fig. 3, while installing manually or automatically 2 rotation around the shaft of counterclockwise driving handle 1, because engaging, the latch hook 42 of trip link 9 and the lock tooth 41 of trip(ping) bar 13 make mechanical interlocking 10 in locking, so handle 1 drives U-shaped bar 4 and make 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 separate, 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, under this state, 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, the actuating push rod 24 of the electromagnetic tripping apparatus 23 at the instantaneous excitation of short circuit current place produces the dropout action of transverse shifting, then touch 31 or 32 actions of short circuit short column, this action makes trip(ping) bar 13 by counterclockwise rotating around the second twisted axis 12, and order about the lock tooth 41 of trip(ping) bar 13 and the latch hook 42 of trip link 9 separates, cause mechanical interlocking 10 releases, 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 separate, 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, overload current can make place as bimetal leaf 21 flexural deformations of trip gear, produce the dropout action that free end swings, the dropout action of bimetal leaf 21 touches 29 or 30 actions of overload short column, this action makes trip(ping) bar 13 by counterclockwise rotating around the second twisted axis 12, and order about the lock tooth 41 of trip(ping) bar 13 and the latch hook 42 of trip link 9 separates, cause mechanical interlocking 10 releases, 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 separate, 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 of making according to the claims in the present invention change and amendment, within all should being considered as covering scope of the present invention.
Claims (10)
1. an operating means for multipole small-size circuit breaker, comprise by rotating shaft (2) be pivoted on handle (1) on Shell of circuit breaker, by axle (14) be pivoted on rotor plate (5) on Shell of circuit breaker, two fixed contacts (22,27) and two moving contacts (18,38) that coordinate with fixed contact (22,27) closure/disjunction respectively, one act on energy-stored spring on rotor plate (5) and one and order about the return unit that trip(ping) bar (13) resets; And two electromagnetic tripping apparatus that are arranged side by side (23), each electromagnetic tripping apparatus comprises an actuating push rod (24) that can send short circuit dropout action in the time that short circuit current occurs; Two thermal release devices that are arranged side by side, each thermal release device comprises a bimetal leaf (21) that can send overlond trip action in the time that overload current occurs;
It is characterized in that, described operating means also comprises:
One is provided with the trip link (9) of latch hook (42), is pivoted on rotor plate (5) by the first twisted axis (8);
A trip(ping) bar (13), the actuator lever (16) which is provided with lock tooth (41), the operating element (40) that can coordinate with two neighboring pole circuit breaker electromagnetism trip gear respectively and can coordinate with the bimetal leaf of two neighboring pole breaker thermal trip gear respectively, it is upper that described trip(ping) bar (13) is pivoted on rotor plate (5) by the second twisted axis (12), and can do limited rotation around this axle;
Its two ends respectively with the U-shaped bar (4) of handle (1) and trip link (9) hinge-coupled, can order about described trip link (9) and do counterclockwise or motion clockwise around the first twisted axis (8);
Two short circuit short columns (31,32) that are arranged side by side on the operating element (40) of described trip(ping) bar (13), they touch and coordinate with the actuating push rod (24,24) of described two electromagnetic tripping apparatus (23) respectively;
Two overload short columns (29 and 30) that are arranged side by side in the actuator lever (16) of described trip(ping) bar (13), they touch and coordinate with the bimetal leaf (21,21) of described two thermal release devices respectively.
2. the operating means of multipole small-size circuit breaker according to claim 1, is characterized in that: 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).
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) by two travel mechanism respectively;
It is upper that 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.
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 and second interface of the formation clutch (6) and on rotor plate (5), 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 disjunction state, described clutch (6) separates,
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 short circuit short column (31,32) and the second twisted axis (12).
7. according to the operating means of the multipole small-size circuit breaker described in claim 1 or 4, it is characterized in that: described operating element (40) and actuator lever (16) are positioned at two described contacts and support the interval D between (15,35).
8. the operating means of multipole small-size circuit breaker according to claim 1, is characterized in that: described two short circuit short columns (31,32) form T word shape 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 word shape 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 support (15,35) to contact cooperation with two faces of rotor plate (5) respectively.
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 true CN104134588A (en) | 2014-11-05 |
| CN104134588B CN104134588B (en) | 2016-03-02 |
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Family Applications (1)
| 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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| WO2016008298A1 (en) * | 2014-07-17 | 2016-01-21 | 正泰集团股份有限公司 | Operation device of multi-pole miniature circuit breaker |
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| CN106128880A (en) * | 2015-05-07 | 2016-11-16 | 施耐德电器工业公司 | For controlling the equipment of electic protection unit and including its electic protection unit |
| CN106971921A (en) * | 2017-04-17 | 2017-07-21 | 乐清市沃斯托电气有限公司 | Breaker |
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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 |
| CN104134588B (en) | 2016-03-02 |
| KR20170068430A (en) | 2017-06-19 |
| AU2015291700A1 (en) | 2017-03-09 |
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