CN103545150A - Breaker operating mechanism - Google Patents

Breaker operating mechanism Download PDF

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Publication number
CN103545150A
CN103545150A CN201310450733.0A CN201310450733A CN103545150A CN 103545150 A CN103545150 A CN 103545150A CN 201310450733 A CN201310450733 A CN 201310450733A CN 103545150 A CN103545150 A CN 103545150A
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China
Prior art keywords
tripping
snap close
circuit breaker
contact
hasp
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CN201310450733.0A
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CN103545150B (en
Inventor
徐波
吴起军
胡克炎
赵明
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Ruirui Electric (Zhejiang) Co.,Ltd.
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ZHEJIANG DAHUA SWITCHGEAR FACTORY
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Publication of CN103545150A publication Critical patent/CN103545150A/en
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Abstract

The invention discloses a breaker operating mechanism which comprises a transmission component. The transmission component comprises a contact support pivoted to the shell of a breaker, a lock catch and a jump fastener. The lock catch and the jump fastener are respectively pivoted to the contact support. The lock catch and the jump fastener are respectively provided with fastening faces suitable for fastening and disconnecting of the lock catch and the jump fastener. When the lock catch is fastened to the jump fastener, the transmission component is in the lock state, the lock catch exerts a force for disconnecting the jump fastener with the lock catch on the jump fastener. The fastening face of the jump fastener is an arc face using the pivot point of the jump fastener as the center. During disconnection of the jump fastener and the lock catch, slide trajectory of the fastening face of the lock catch on the fastening face of the jump fastener is an arc using the pivot point of the jump fastener as the center. By the arrangement, during disconnection of the jump fastener and the lock catch, the disconnection force exerted by the lock catch on the arc face of the jump fastener is constant, service life of the lock catch and the jump fastener can be prolonged favorably, and work stability and reliability of the breaker operating mechanism are increased.

Description

A kind of circuit breaker operation mechanism
Technical field
The present invention relates to breaker technical field, particularly a kind of minute not slide fastener and constant circuit breaker operation mechanism of tripping force of closing fast.
Background technology
Circuit breaker is the terminal equipment of distribution line, has the features such as volume is little, modularization, is mainly used in protection circuit.The operating mechanism kind of circuit breaker is various, most adopts the power transmission between connecting rods to realize dynamic/static contact closure and separation process, the object that four connecting rods and the conversion between five connecting rods by operating mechanism realizes dropout.
As Chinese patent literature CN102426999A discloses a kind of operating mechanism of modularized breaker, it comprises moving contact, fixed contact, be pivoted on the operating grip on case for circuit breaker, the contact that is pivoted on case for circuit breaker by the second pivot is supported, the return spring being connected with operating mechanism with shell respectively, respectively with the energy-stored spring of shell and contact Supporting connectivity, connecting rod, lever and snap close, lever and snap close are pivoted on respectively contact and support, between the first hasp face on lever and the second hasp face on snap close, there is contact locking and separated locking two states, and under contact lock-out state, lever, snap close and contact are supported free movement relatively between three, and under separated released state, lever and snap close can freely rotate with respect to contact support.Moving contact is pivoted in contact support by the first syndeton and compression spring, this spring one end and contact Supporting connectivity, and the other end is connected with moving contact, and this spring energy-storage also provides contact to the moving contact under closure state and fixed contact.
Yet, in use there is following problem in the prior art: 1, the concrete shape of the second hasp face of the first hasp face and snap close is not disclosed in the description of the prior art, but can find out in its accompanying drawing, the first hasp face of its lever and the second hasp face of snap close are flat face, when lever passes through around its pivotable center rotating, while realizing with snap close snap lock or releasing process, the track that on its first hasp face, any point slips over is all to take the circular arc that lever pivots center is the center of circle, but the first hasp face is straight, therefore the arc track radius that on it, different points slips over is also different, so just causing the track that the second hasp face of described snap close slips over can not be a fixing circular arc, being applied to torsion spring on described snap close, by snap close, to pass to the tripping force of lever just non-constant, and the non-constant job stability that will be unfavorable for circuit breaker operation mechanism of tripping force, nor be beneficial to useful life of lever and snap close, 2, in the prior art, its connecting rod one end and operating grip are hinged, the other end and lever are hinged, the first center of rotation that connecting rod and lever are articulated and connected is arranged between the second pivotable center and the first hasp face of lever, and the first center of rotation of connecting of rod hinge connection and the extended line of the line between the second center of rotation pass from the second pivotable center of lever and the 3rd pivotable center of snap close, these two architectural features have realized locking or the release between lever and snap close, in design process, desirable state is, when operating grip is stabilized in the first settling position or the second settling position, the complete hasp of the second hasp face of the first hasp face of lever and snap close, realize locking, yet, in actual production, production length and the design length of connecting rod exists error and connecting rod in batch production, can not guarantee that each length of connecting rod is consistent, the existence of this problem makes when operating grip turns to settling position, by connecting rod, drive the lever rotating not turn to the position of initial designs, thereby cause lever the first hasp face can not with the complete hasp of the second hasp face of snap close, lever can not be returned to initial, set position while resetting, this kind of situation causes dynamic/static contact in closing fast minute process, easily to occur slide fastener, the reliability and stability of circuit breaker operation mechanism work have been had a strong impact on.
Summary of the invention
For this reason, technical problem to be solved by this invention be to overcome in prior art circuit breaker operation mechanism in the locking and unlocking process between snap close and tripping tripping force non-constant, be unfavorable for the prolongation in snap close and tripping useful life, and the problem that is unfavorable for operating mechanism job stability, thereby provide a kind of in the locking and unlocking process snap close and tripping tripping force constant, be conducive to extend snap close and tripping useful life and further improve the circuit breaker operation mechanism of circuit breaker operation mechanism functional reliability.
A kind of circuit breaker operation mechanism that there will not be slide fastener in closing fast minute process between snap close and tripping is further provided.
For solving the problems of the technologies described above, the invention provides a kind of circuit breaker operation mechanism, it comprises transmission component, described transmission component comprises the contact support being pivoted on case for circuit breaker and is pivoted on respectively snap close and the tripping that described contact is supported, described snap close and described tripping have respectively the hasp face that is suitable for both lockings or departs from; When described snap close and described tripping hasp, described transmission component is in the lock state, and described snap close applies tripping force to described tripping; The hasp face of described tripping is for take the arc surface that its pivotal point is the center of circle, and in described tripping and described snap close dropout process, the track that the hasp face of described snap close slides on the hasp face of described tripping is to take the circular arc that the pivotal point of described tripping is the center of circle.
The arc surface that the hasp face of described snap close matches for the hasp face with described tripping.
Described circuit breaker operation mechanism also comprises the driven unit being connected with described transmission component, described driven unit comprises that operating grip and one end of being pivoted on described case for circuit breaker are hinged on described operating grip, and the other end is connected in the connecting rod on described transmission component.
Described operating grip has and by described connecting rod, promotes and prop up described transmission component and make described transmission component turn to the first settling position of lock-out state and described connecting rod to depart from described transmission component and offset and make described transmission component return back to the second settling position of release stable state.
Described connecting rod is U-shaped connecting rod, it is hinged on the relative other end in described operating grip one end and is inserted in slidably described contact and supports in the sliding tray of moulding, when described snap close and described tripping hasp, the side that described U-shaped connecting rod inserts described sliding tray one end and described sliding tray offsets, make described contact support can not return back to its release settling position, after described snap close and described tripping dropout, described U-shaped connecting rod and described irregularly-shaped hole side depart to offset makes described contact support return back to its release settling position.
The support bar that described U-shaped connecting rod comprises both ends and connects both ends, when described snap close and described tripping hasp, described support bar and the line that is hinged on the end on described operating grip pass or approach the pivotal point of described operating grip.
On described snap close, form irregularly-shaped hole, one end of described U-shaped connecting rod is through being inserted into after described irregularly-shaped hole in the described sliding tray of described contact support, when described operating grip turns to described the first settling position, the lock face that this end of described U-shaped connecting rod is against described irregularly-shaped hole makes described snap close and described tripping hasp, when described operating grip returns back to described the second settling position, the described lock face of this end of described U-shaped connecting rod and described irregularly-shaped hole departs from makes described snap close return back to its release settling position.
The hasp face of described tripping is the first hasp face, and described tripping also comprises the first locating surface being connected on described the first hasp face, between described tripping and described contact support, is connected with tripping reduction torsion spring, the hasp face of described snap close is the second hasp face, described snap close also comprises the second locating surface being connected with described the second hasp face, between described snap close and described contact support, be connected with snap close reduction torsion spring, after described tripping and the dropout of described snap close, described snap close and described tripping are respectively under described snap close reduction torsion spring and described tripping reduction torsion spring reset torsion, around pivotal point separately, to release settling position, rotate respectively, when described snap close turns to its release settling position, the first locating surface that described the second locating surface props up described tripping makes described tripping be stabilized in release settling position.
Described circuit breaker operation mechanism also comprises that handle reduction torsion spring and one end of being connected on described operating grip and described case for circuit breaker are fixed on described case for circuit breaker, the other end is fixed on the reset tension spring that described contact is supported, after described snap close and described tripping are threaded off, described operating grip is subject to the torsion of described handle reduction torsion spring to return back to described the second settling position, and described contact support is subject to described reset tension spring pulling force to return back to its release settling position.
Described tripping also comprises for to the described registration arm of carrying out position restriction perpendicular to its rotational plane direction that latches in, described registration arm is extended and covers on described snap close to described snap close, and described snap close is sandwiched between the described registration arm and the support of described contact of described tripping.
Described transmission component is connected with the moving contact of described circuit breaker, when described operating grip turns to the first settling position, described transmission component drives described moving contact to contact with the fixed contact of circuit breaker, described transmission component is subject to external force when release settling position rotates, to drive described moving contact disengaging to contact with described fixed contact, and described operating grip returns back to described the second settling position.
One end of described moving contact is articulated with the upper of described contact support, between described moving contact and described contact support, is connected with contact torsion spring, is provided with the limiting plate that departs from rear turned position for limiting described moving contact and described fixed contact in described case for circuit breaker.
Described case for circuit breaker is provided with the positive stop lug boss that returns back to its release settling position for limiting described contact support.
In described contact support, form for after latching in itself and described tripping described in limiting and threading off, return back to the first positive stop lug boss of its release settling position.
In described case for circuit breaker, be also provided with electromagnetic system, the middle iron core of described electromagnetic system and the described tripping corresponding setting that keeps at a certain distance away, described middle iron core stretches out and promotes described tripping and makes described tripping and the dropout of described snap close.
In described case for circuit breaker, be provided with thrermostatic bimetal-plate, between described tripping and described thrermostatic bimetal-plate, be provided with trip link, described trip link one end is connected with described tripping, the other end is with described thrermostatic bimetal-plate with the corresponding setting of fixed intervals, and described thrermostatic bimetal-plate heated bending promotes described trip link motion and drives described tripping and described snap close to thread off.
Technique scheme of the present invention has the following advantages compared to existing technology:
1, in the present invention, the hasp face of its tripping is for take the arc surface that pivotal point that tripping rotates around contact support is the center of circle, in tripping and described snap close dropout process, the track that the hasp face of snap close slides on the hasp face of described tripping is for take the circular arc that the pivotal point of tripping is the center of circle, so that tripping is by rotation and snap close dropout process, the tripping force that snap close is applied on tripping arc surface is constant, both be conducive to improve the job stability of circuit breaker operation mechanism, can have extended again the useful life of snap close and tripping.
2, in the present invention; the arc surface that the hasp face of its snap close matches for the hasp face with tripping; this kind arranges the further job stability that improves operating mechanism, also further realizes the protection to tripping and snap close, is conducive to further extend the useful life of snap close and tripping.
3, in the present invention, its connecting rod is U-shaped connecting rod, U-shaped rod hinge connection is inserted in slidably contact at the relative other end in operating grip one end and supports in the sliding tray of moulding, when snap close and tripping hasp, by U-shaped connecting rod insertion sliding tray one end and irregularly-shaped hole side are offseted, thereby realize the restriction that contact is supported, make it can not return back to its release settling position, after snap close and tripping dropout, U-shaped connecting rod and irregularly-shaped hole side depart to offset makes contact support return back to its release settling position.
4, in the present invention, by moulding irregularly-shaped hole on snap close, make one end of U-shaped connecting rod through being inserted into after irregularly-shaped hole in the sliding tray of contact support, when operating grip turns to the first settling position, by the lock face that makes this end of U-shaped connecting rod be against irregularly-shaped hole, make snap close and tripping hasp, realize the locking of snap close and tripping, further, this end of U-shaped connecting rod also supports the side of sliding tray to offset with contact, therefore, this kind setting of the present invention has been realized snap close, tripping, contact is supported, locking between U-shaped connecting rod, and when operating grip returns back to the second settling position, this end of U-shaped connecting rod and the lock face of irregularly-shaped hole depart from makes snap close return back to its release settling position, and, this end due to U-shaped connecting rod, after snap close and tripping dropout, depart from and contact with the lock face of irregularly-shaped hole, even if make the length dimension of the U-shaped connecting rod produced inconsistent with the length dimension of design, also can make to latch under the effect of snap close reduction torsion spring and return back to its release settling position, thereby make to close fast in minute process at killer switch, between snap close and tripping, there will not be slide fastener.
5, in the present invention, U-shaped connecting rod comprises both ends and the support bar that connects both ends, when snap close and tripping hasp, support bar and the line that is hinged on the end on operating grip through or the pivotal point of Proximity operation handle, when this kind is arranged so that the side of the other end of U-shaped connecting rod and the sliding tray of contact support offsets, U-shaped connecting rod can obtain enough support forces and stop contact support to its release settling position revolution.
6, in the present invention, on the first hasp face of its tripping and the second hasp face of snap close, be also connected with respectively the first locating surface and the second locating surface, after tripping and snap close dropout, snap close and tripping are respectively under snap close reduction torsion spring and tripping reduction torsion spring reset torsion, around pivotal point separately, to release settling position, rotate respectively, when snap close turns to its release settling position, thereby the second locating surface of snap close props up the first locating surface of tripping makes tripping be stabilized in release settling position, this kind setting can prevent from surpassing when tripping reset is reversed by snap close to turn round under twisting force its release settling position, further improved the job stability of operating mechanism.
7, in the present invention, its tripping also comprises for to latching in the registration arm of carrying out position restriction perpendicular to its rotational plane direction, this registration arm is extended and covers on snap close to snap close, thereby snap close is sandwiched between the registration arm and contact support of tripping, when having prevented from latching in work, this kind of setting occur rocking in the vertical direction of its rotational plane, be conducive to improve the reliability of snap close work, further improve operating mechanism job stability.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the installation diagram of circuit breaker operation mechanism of the present invention and case for circuit breaker;
Fig. 2 is snap close of the present invention and tripping installation diagram;
Fig. 3 is the structural representation of tripping of the present invention;
Fig. 4 is the structural representation of snap close of the present invention;
Fig. 5 is the structural representation that contact of the present invention is supported;
Fig. 6 is the installation diagram of snap close of the present invention and tripping hasp state;
Fig. 7 is the installation diagram of snap close of the present invention and tripping trip status;
Fig. 8 is the perspective view of snap close of the present invention and tripping hasp state.
In figure, Reference numeral is expressed as: 1-contact is supported, 11-tripping reduction torsion spring, 12-sliding tray, 13-point is protruding, 2-tripping, 27-registration arm, 21-the first hasp face, 22-the first locating surface, 23-draw-in groove, 24-the second pivoting hole, 25-the second pivot, 26-the 3rd pivot, 28-contact torsion spring, 3-connecting rod, 4-operating grip, 5-handle reduction torsion spring, 6-reset tension spring, 8-snap close reduction torsion spring, 9-snap close, 91-lock face, 92-the second hasp face, 93-the second locating surface, 95-the first pivoting hole, 10-the first pivot, 12-sliding tray, 13-contact torsion spring, 15-fixed contact, 16-thrermostatic bimetal-plate, 17-trip link, 18-electromagnetic system, iron core in 181-, 19-case for circuit breaker, 20-moving contact, 31-positive stop lug boss, 32-the first positive stop lug boss.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
Fig. 1 shows the installation diagram of circuit breaker operation mechanism of the present invention and case for circuit breaker, wherein, the circuit breaker operation mechanism of the present embodiment comprises transmission component, described transmission component comprises the contact support 1 being pivoted on case for circuit breaker 19 and is pivoted on respectively described contact supports snap close 9 and the tripping 2 on 1, described snap close 9 and described tripping 2 have be respectively suitable for both lockings or depart from hasp face.
It should be noted that, as shown in Figure 1, in contact support 1, form the first pivoting hole, described contact support 1 is sleeved on the first pivot 10 by described the first pivoting hole, thereby be installed in rotation on case for circuit breaker 19, in the present embodiment, described the first pivot 10 and case for circuit breaker 19 split settings, the first pivot 10 is fixed on case for circuit breaker 19 simultaneously, certainly described the first pivot 10 can be also the pivot pin being molded on case for circuit breaker 19, and the present embodiment is not done concrete restriction to this.In addition, as shown in Figure 1, described snap close 9 and described tripping 2 form respectively the second pivoting hole 24 and the 3rd pivoting hole, described snap close 9 and described tripping 2 are pivotally mounted on described contact by the second pivot 25 and the 3rd pivot 26 respectively and support on 1, equally, described the second pivot 25 and described the 3rd pivot 26 both with the mode that is fixedly connected with of case for circuit breaker 19, be not restricted respectively.
In the present embodiment, as shown in Figure 1, Figure 2 with shown in Fig. 6, when described snap close 9 and described tripping 2 hasp, said " hasp " refers to that the hasp face of described snap close 9 and the snap close face of described tripping 2 overlap completely herein, described transmission component integral body is in the lock state, it is as a whole to be that described contact support 1, described snap close 9 and described tripping 2 threes lock, can not relative motion between three.Now, the hasp of described snap close 9 applies tripping force towards the hasp face of described tripping 2, and the hasp face that this tripping force orders about described snap close 9 has the movement tendency that departs from described tripping 2 hasp faces.
In the present embodiment, in order to reduce described snap close 9 and described tripping 2, be subject to the infringement of described tripping force, as shown in Figure 2 and Figure 4, the hasp face of described tripping 2 is for take the arc surface that its pivotal point is the center of circle, in described tripping 2 and described snap close 9 dropout processes, the track that the hasp face of described snap close 9 slides on the hasp face of described tripping 2 is for take the circular arc that the pivotal point of described tripping 2 is the center of circle, described pivotal point is the center of the 3rd pivoting hole of tripping 2 described above, this kind of set-up mode make described tripping 2 with described snap close 9 dropout processes in, the tripping force that described snap close 9 is applied on the described arc surface of described tripping 2 is constant, like this, both be conducive to improve the job stability of circuit breaker operation mechanism, can extend again the useful life of described snap close 9 and described tripping 2.
Further, in the present embodiment, as shown in Figures 2 and 3, the arc surface that the hasp face of described snap close 9 matches for the hasp face with described tripping 2, this kind of set-up mode further guaranteed described snap close 9 and described tripping 2 tripping force constant when threading off, further improve the job stability of circuit breaker operation mechanism, be certainly more conducive to extend the useful life of described snap close 9 and described tripping 2.
In the present embodiment, as shown in Figure 1, described circuit breaker operation mechanism also comprises the driven unit being connected with described transmission component, described driven unit comprises operating grip 4 and the connecting rod 3 being pivoted on described case for circuit breaker 19, described connecting rod 3 one end are hinged on described operating grip 4, the other end is connected in described transmission component, herein said " connection " include but not limited to contact.
In the present embodiment, as shown in Figure 6 and Figure 7, thereby described operating grip 4 has and promotes and prop up described transmission component by described connecting rod 3 and make described transmission component turn to the first settling position of lock-out state, thereby and described connecting rod 3 depart from described transmission component and offset and make described transmission component return back to the second settling position of release stable state.
On the basis of the above, described connecting rod 3 is U-shaped connecting rod, the two ends that so-called U-shaped connecting rod refers to connecting rod are respectively to same direction bending, integral body is looked and look like " U " shape, in the present embodiment, as Fig. 1, shown in Fig. 5 and Fig. 7, described U-shaped connecting rod one end is hinged on the upper of described operating grip 4, the other end at described U-shaped connecting rod two ends is inserted in slidably described contact and supports in the sliding tray 12 of moulding on 1, when described snap close 9 and described tripping 2 hasp, described U-shaped connecting rod inserts this one end of described sliding tray 12 and the side of described sliding tray 12 offsets, this power of offseting makes described contact support 1 can not return back to its release settling position, here need described contact to support 1 " release settling position " to describe, when described snap close 9 and described tripping 2 hasp, described contact supports that 1 residing position is lock-out state settling position, after described snap close 9 is threaded off with described tripping 2, it is its release settling position that described contact support 1 returns back to the settling position no longer rotating.
Further, described U-shaped connecting rod comprises both ends and is connected in the volume support bar between end described in two, when described snap close 9 and described tripping 2 hasp, described support bar and the line that is hinged on the end on described operating grip 4 through or approach the pivotal point of described operating grip, when described snap close 9 and described tripping 2 hasp, described snap close 9, described tripping 2 and described contact are supported 1 three's locking, and the locking of described contact support 1 is to insert described sliding tray 12 inner ends by described U-shaped connecting rod to support that at described contact withstanding described contact support 1 on 1 gyratory directions makes it can not return back to its release settling position, and described contact supports that 1 when three's lock-out state, it has one to the rotating turning power of release settling position, this turning power passes to described operating grip 4 by described U-shaped connecting rod, due to described support bar now and the line that is hinged on the end on described operating grip 4 through or approach the pivotal point of described operating grip 4, therefore in this position, described operating grip 4, described U-shaped connecting rod 3 and described contact support to form between 1 three a locking mechanism, therefore, in conjunction with foregoing description content, described operating grip 4 now, described U-shaped connecting rod 3, described contact supports 1, described snap close 9 and described tripping 2 form a large locking mechanism, this kind of set-up mode makes described snap close 9 and described tripping 2 when hasp, its lock-out state is more reliable and stable, be conducive to improve the job stability of the lock-out state of circuit breaker operation mechanism.
On the basis of the above, further particularly, as shown in Fig. 1, Fig. 3, Fig. 6 and Fig. 7, on described snap close 9, form irregularly-shaped hole, described U-shaped connecting rod one end is through being inserted into after described irregularly-shaped hole in the described sliding tray 12 of described contact support 1, by Fig. 1, Fig. 6, can be found out, the size of described irregularly-shaped hole is greater than the size that described U-shaped connecting rod inserts described irregularly-shaped hole medial end portions.In the present embodiment, when described operating grip 4 turns to its first settling position, this end of described U-shaped connecting rod is against on the lock face 91 of described irregularly-shaped hole, thereby makes described snap close 9 and described tripping 2 hasps, because the size of described irregularly-shaped hole is greater than the size of this end of described U-shaped connecting rod, when this end of described U-shaped connecting rod is against on the lock face 91 of described irregularly-shaped hole, between this end of described U-shaped connecting rod and other edge of described irregularly-shaped hole, also leave gap, therefore when described operating grip 4 returns back to described the second settling position, this end of described U-shaped connecting rod and the described lock face of described irregularly-shaped hole 91 depart from, relative position by the adjustment of described gap with described irregularly-shaped hole, thereby make described snap close 9 return back to release settling position described in it, the present embodiment is by the setting of described irregularly-shaped hole, make the relative position of described U-shaped connecting rod and described snap close 9 have an adjustable space, therefore, when the described U-shaped connecting rod of the part mass-producing size is inconsistent, also can make described snap close 9 under the effect of described snap close reduction torsion spring, return back to its release settling position, thereby make to close fast in minute process at killer switch, between snap close and tripping, there will not be slide fastener.
Further again, as shown in Figure 4, the hasp face of described tripping 2 is the first hasp face 21, described tripping 2 also comprises the first locating surface 22 being connected on described the first hasp face 21, between described tripping 2 and described contact support 1, be connected with tripping reduction torsion spring 11, the hasp face of described snap close 9 is the second hasp face 92, described snap close 9 also comprises the second locating surface 93 being connected with described the second hasp face 92, between described snap close 9 and described contact support 1, be connected with snap close reduction torsion spring 8, it should be noted that, described tripping reduction torsion spring 11 one end are fixed on described contact and support on 1, the other end is fixed in described tripping 2, when described snap close 9 and described tripping 2 hasp, be that described tripping 2 is when locking stable state, described tripping reduction torsion spring 11 stores reset torsion, this reset torsion orders about described tripping 2 and returns back to its release stable state, same, described snap close reduction torsion spring 8 one end are fixed on described contact and support that on 1, the other end is fixed on described snap close 9, and this snap close reduction torsion spring 8 orders about described snap close 9 and returns back to its release settling position.
During use, after described tripping 2 and described snap close 9 are threaded off, described snap close 9 and described tripping 2 are respectively under described snap close reduction torsion spring 8 and described tripping reduction torsion spring 11 reset torsion, around pivotal point separately, to release settling position, rotate respectively, when described snap close 9 turns to its release settling position, the first locating surface 22 that described the second locating surface 93 props up described tripping 2 makes described tripping 2 be stabilized in release settling position.In the time of can preventing that by arranging of described the first locating surface 22 and described the second locating surface 93 described tripping 2 from turning round under snap close reset twisting force in the present embodiment, surpass its release settling position, make described tripping 2 more accurate with coordinating of 9 of described snap closes, further improved the job stability of circuit breaker operation mechanism.
In addition, in the present embodiment, as shown in Figure 1, described circuit breaker operation mechanism also comprises that being connected to described operating grip 4 is fixed on described case for circuit breaker 19 with handle reduction torsion spring 5 and one end on described case for circuit breaker 19, the other end is fixed on described contact and supports the reset tension spring 6 on 1, described handle reduction torsion spring 5 one end are fixed on described case for circuit breaker 19, the other end is fixed on described operating grip 4, and when described operating grip 4 is during in described the first settling position, while being described snap close 9 and described tripping 2 hasp, described handle reduction torsion spring 5 stores reset torsion, this reset torsion orders about described operating grip 4 and returns back to described the second settling position by described the first settling position, when described snap close 9 and described tripping 2 hasp, described contact supports that 1 in its locking stable state, now, described reset tension spring 6 stores reset pulling force, and this reset pulling force has and pulls described contact support 1 to return back to the trend of its release stable state by its locking stable state.Therefore, in use, after described snap close 9 is threaded off with described tripping 2, described operating grip 4 is subject to the torsion of described handle reduction torsion spring 5 to return back to described the second settling position, and described contact support 1 is subject to described reset tension spring 6 pulling force to return back to its release settling position.
Further, described tripping 2 also comprises for described snap close 9 is being carried out to the registration arm 27 of position restriction perpendicular to its rotational plane direction, described registration arm 27 is extended and covers on described snap close 9 to described snap close 9, thereby the described registration arm 27 and the described contact that make described snap close 9 be sandwiched in described tripping 2 are supported between 1, this kind of set-up mode prevented from when described snap close 9 from being used occurring rocking in the vertical direction of its rotational plane, be conducive to improve the reliability of snap close work, further improve operating mechanism job stability.
In the present embodiment, as shown in Figure 6 and Figure 8, described transmission component is connected with the moving contact 20 of described circuit breaker, and when described operating grip 4 turns to described the first settling position, described transmission component drives described moving contact 20 to contact with the fixed contact 15 of described circuit breaker; As shown in Figure 6, described transmission component is subject to external force when release settling position rotates, to drive described moving contact 20 disengagings to contact with described fixed contact 15, and described operating grip 4 returns back to described the second settling position.
Particularly, as shown in Figure 6 and Figure 8, described contact support 1 is connected with described moving contact 20, when described operating grip 4 turns to described the first settling position, described U-shaped connecting rod promotes described contact support 1 and turns to its locking stable state, and now described contact support 1 drives described moving contact 20 to turn to the position contacting with described fixed contact 15 just; As described in Figure 7, when described tripping 2 is rotated to its release stable state by external force, described tripping 2 is threaded off with described snap close 9, described snap close 9, described tripping 2 and described contact are supported 1 three's release, described contact support 1 is to its release settling position revolution under described reset tension spring 6 effects, and described moving contact 20 disengagings of described contact support 1 drive contact with described contact head 15.
Further, in the present embodiment, as shown in Figure 6 and Figure 7, one end of described moving contact 20 is articulated with the upper of described contact support 1, between described moving contact 20 and described contact support 1, be connected with contact torsion spring 28, described contact torsion spring 28 one end are fixed on described contact and support on 1, one end is fixed on described moving contact 20, in described case for circuit breaker 19, be provided with the limiting plate 30 that departs from rear turned position for limiting described moving contact 20 and described fixed contact 15, after described contact supports 1 to drive described moving contact 20 disengagings to contact with described fixed contact 15, described moving contact 20 is subject to the obstruction of described limiting plate 30 in rotation process, described contact support 1 is rotated further, now described contact torsion spring 28 starts to store reset torsion, the arranging of described contact torsion spring 28 and described limiting plate 30 can reduce described moving contact 20 and depart from the rotation space taking after described fixed contact 15, from whole structure, reduced the volume of circuit breaker integral body, saved cost.
In addition, in the present embodiment, as Fig. 6, Fig. 7 and Fig. 8, in described case for circuit breaker 19, be also provided with electromagnetic system 18, the middle iron core 181 of described electromagnetic system 18 and the described tripping 2 corresponding setting that keeps at a certain distance away, described herein keeping at a certain distance away refer to, during the fault that is short-circuited in circuit breaker circuit, described middle iron core 181 stretches out and can promote described tripping 2 described tripping 2 and described snap close 9 are threaded off.
Further, as Fig. 6, Fig. 7 and Fig. 8, in described case for circuit breaker 19, be also provided with thrermostatic bimetal-plate 16, between described tripping 2 and described thrermostatic bimetal-plate 16, be provided with trip link 17, described trip link 17 one end are connected with described tripping 2, the other end is with described thrermostatic bimetal-plate 16 with the corresponding setting of fixed intervals, and fixed intervals described herein refer to, when described thermometal sheet 16 heated bendings can promote described trip link 17 motions, drive described tripping 2 and described snap close 9 to thread off.
According to structure described above, below the described circuit breaker operation mechanism of the present embodiment and the course of action of dynamic/static contact and electromagnetic system (being the course of action of circuit breaker integral body) be described with reference to the accompanying drawings:
Breaker open operation action:
As shown in Figure 6 and Figure 8, in circuit breaker circuit during current overload, described thrermostatic bimetal-plate 16 is heated to the right and crookedly drives described trip link 17 to move right, described trip link 17 drives described tripping 2 to rotate in the counterclockwise direction, thereby described tripping 2 and described snap close 9 are threaded off, now, described snap close 9, described tripping 2 and described contact are supported 1 three's release, described contact supports that 1 under the pulling force of described reset tension spring 6, the sidewall of the described sliding tray 12 by moulding on it promotes described U-shaped connecting rod and moves downward, the lock face 91 that described U-shaped connecting rod promotes described snap close 9 rotates counterclockwise described snap close 9, when described snap close 9 rotates counterclockwise after a bit of distance, described snap close 9 is threaded off completely with described tripping 2, now, described contact support 1 is owing to having turned round certain angle, itself and described U-shaped connecting rod insert weakening or disappearing against power in described sliding tray 12, should be not enough to realize the locking of described contact being supported to 1 against power, so now by described snap close 9, described tripping 2, the quadric chain release that described contact support 1 and described U-shaped connecting rod form.Then, described operating grip 4 is rotated to described the second settling position counterclockwise by described the first settling position under the reset torsion of described handle reduction torsion spring 5, described operating grip 4 drives described U-shaped connecting rod 3 along described contact, to support 1 described sliding tray 12 upward slidings, until described operating grip 4 stops while turning to described the second settling position, simultaneously described contact supports that 1 around described the first counterclockwise rotation of pivot 10, described contact supports 1 upper-end part of driving to stop while counterclockwise rotating to described positive stop lug boss 31, at this moment the lower end part of described U-shaped connecting rod 3 support 1 described sliding tray 12 along described contact in relatively-stationary position, at this moment described snap close 9 stops when under the active force of snap close reduction torsion spring 8, clockwise direction rotation is to described the first positive stop lug boss 32, simultaneously, described tripping 2 is under described tripping reduction torsion spring 11 reset torsion, along described contact, support 1 pivotable center (center of the first pivot) clockwise direction rotation, until the first locating surface 22 of described tripping 2 stops while contacting with described second locating surface 93 of described snap close 9, in this process, described moving contact 15 stops under the active force of described contact torsion spring 12 when the contact center of rotation of described contact support 1 is counterclockwise rotated to described limiting plate 30, circuit breaker operation mechanism completes everything since then, switch disconnects, eliminate fault current.In addition, when being short-circuited fault, described middle iron core 4 actions of described electromagnetic system 18, promote counterclockwise rotation of described tripping 2, and its subsequent action as above.
Breaker closing action:
As shown in Figure 7, when described operating grip rotates around the pivotable center of described case for circuit breaker 19 clockwise direction, described operating grip 4 promotes described U-shaped connecting rod and along described contact, supports 1 described sliding tray 12 down slidings, described U-shaped connecting rod described lock face 91 with described snap close 9 in sliding process contacts, make counterclockwise rotation of described snap close 9 until described second locating surface 92 of snap close 9 and described first locating surface 22 of described tripping 2 stop (described snap close 9 and described tripping 2 hasps) while contacting completely, described snap close 9 pins with described tripping 2, when described U-shaped connecting rod 3, when the described sliding tray 12 of described contact support 1 continues down sliding, described snap close 9 and described tripping 2 and described contact to be supported between 1 three mutually locked, at this moment described U-shaped connecting rod promotes described contact and supports that 1 around described the first pivot 10 clockwise direction rotations, and drive associated components to rotate, when rotating to the first settling position, described operating grip 4 stops, described snap close 9, described tripping 2 and described contact support 1 all turn to its release settling position, described moving contact 20 contacts completely with described fixed contact 15, switch energising.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being extended out thus or change are still among the protection range in the invention.

Claims (16)

1. a circuit breaker operation mechanism, it comprises transmission component, described transmission component comprises the contact support (1) being pivoted on case for circuit breaker (19) and is pivoted on respectively snap close (9) and the tripping (2) in described contact support (1), described snap close (9) and described tripping (2) have be respectively suitable for both lockings or depart from hasp face;
When described snap close (9) and described tripping (2) hasp, described transmission component is in the lock state, and the hasp of described snap close (9) applies tripping force towards the hasp face of described tripping (2);
It is characterized in that:
The hasp face of described tripping (2) is for take the arc surface that its pivotal point is the center of circle, in described tripping (2) and described snap close (9) dropout process, the track that the hasp face of described snap close (9) slides on the hasp face of described tripping (2) is for take the circular arc that the pivotal point of described tripping (2) is the center of circle.
2. circuit breaker operation mechanism according to claim 1, is characterized in that: the arc surface that the hasp face of described snap close (9) matches for the hasp face with described tripping (2).
3. circuit breaker operation mechanism according to claim 1 and 2, it is characterized in that: described circuit breaker operation mechanism also comprises the driven unit being connected with described transmission component, described driven unit comprises that operating grip (4) and one end of being pivoted on described case for circuit breaker (19) are hinged on described operating grip (4) above, and the other end is connected in the connecting rod (3) on described transmission component.
4. circuit breaker operation mechanism according to claim 3, is characterized in that: described operating grip (4) has and by described connecting rod (3), promotes and prop up described transmission component and make described transmission component turn to the first settling position of lock-out state and described connecting rod (3) to depart from described transmission component and offset and make described transmission component return back to the second settling position of release stable state.
5. according to the circuit breaker operation mechanism described in claim 3 or 4, it is characterized in that: described connecting rod (3) is U-shaped connecting rod, it is hinged in the sliding tray (12) that the relative other end in described operating grip (4) one end is inserted in the upper moulding of described contact support (1) slidably, when described snap close (9) and described tripping (2) hasp, the side that described U-shaped connecting rod inserts described sliding tray (12) one end and described sliding tray (12) offsets, make described contact support (1) can not return back to its release settling position, after described snap close (9) and described tripping (2) are threaded off, described U-shaped connecting rod and described irregularly-shaped hole side depart to offset makes described contact support (1) return back to its release settling position.
6. circuit breaker operation mechanism according to claim 5, it is characterized in that: described U-shaped connecting rod comprises both ends and the support bar that connects both ends, when described snap close (9) and described tripping (2) hasp, described support bar and the line that is hinged on the end on described operating grip (4) through or approach the pivotal point of described operating grip (4).
7. according to the circuit breaker operation mechanism described in claim 5 or 6, it is characterized in that: described snap close forms irregularly-shaped hole on (9), one end of described U-shaped connecting rod is inserted in the described sliding tray (12) of described contact support (1) through after described irregularly-shaped hole, when described operating grip (4) turns to described the first settling position, the lock face (91) that this end of described U-shaped connecting rod is against described irregularly-shaped hole makes described snap close (9) and described tripping (2) hasp, when described operating grip (4) returns back to described the second settling position, the described lock face (91) of this end of described U-shaped connecting rod and described irregularly-shaped hole departs from makes described snap close (9) return back to its release settling position.
8. circuit breaker operation mechanism according to claim 7, it is characterized in that: the hasp face of described tripping (2) is the first hasp face (21), described tripping (2) also comprises the first locating surface (22) being connected on described the first hasp face (21), between described tripping (2) and described contact support (1), is connected with tripping reduction torsion spring (11), the hasp face of described snap close (9) is the second hasp face (92), described snap close (9) also comprises the second locating surface (93) being connected with described the second hasp face (92), between described snap close (9) and described contact support (1), be connected with snap close reduction torsion spring (8), after described tripping (2) and described snap close (9) are threaded off, described snap close (9) and described tripping (2) are respectively under described snap close reduction torsion spring (8) and described tripping reduction torsion spring (11) reset torsion, around pivotal point separately, to release settling position, rotate respectively, when described snap close (9) turns to its release settling position, the first locating surface (22) that described the second locating surface (93) props up described tripping (2) makes described tripping (2) be stabilized in release settling position.
9. according to arbitrary described circuit breaker operation mechanism in claim 1-8, it is characterized in that: described circuit breaker operation mechanism also comprises that being connected to described operating grip (4) is fixed on described case for circuit breaker (19) with handle reduction torsion spring (5) and one end on described case for circuit breaker (19), the other end is fixed on the reset tension spring (6) in described contact support (1), after described snap close (9) is threaded off with described tripping (2), described operating grip (4) is subject to the torsion of described handle reduction torsion spring (5) to return back to described the second settling position, described contact support (1) is subject to described reset tension spring (6) pulling force to return back to its release settling position.
10. according to arbitrary described circuit breaker operation mechanism in claim 1-9, it is characterized in that: described tripping (2) also comprises for described snap close (9) is being carried out to the registration arm (27) of position restriction perpendicular to its rotational plane direction, described registration arm (27) is extended and covers described snap close (9) above to described snap close (9), and described snap close (9) is sandwiched between the described registration arm (27) and described contact support (1) of described tripping (2).
11. according to arbitrary described circuit breaker operation mechanism in claim 4-10, it is characterized in that: described transmission component is connected with the moving contact (20) of described circuit breaker, when described operating grip (4) turns to the first settling position, described transmission component drives described moving contact (20) to contact with the fixed contact (15) of circuit breaker, described transmission component is subject to external force when release settling position rotates, to drive described moving contact (20) disengaging to contact with described fixed contact (15), and described operating grip (4) returns back to described the second settling position.
12. according to arbitrary described circuit breaker operation mechanism in claim 1-11, it is characterized in that: one end of described moving contact (20) is articulated with the upper of described contact support (1), between described moving contact (20) and described contact support (1), be connected with contact torsion spring (28), in described case for circuit breaker (19), be provided with the limiting plate (30) that departs from rear turned position for limiting described moving contact (20) and described fixed contact (15).
13. according to arbitrary described circuit breaker operation mechanism in claim 1-12, it is characterized in that: described case for circuit breaker (19) is provided with the positive stop lug boss (31) that returns back to its release settling position for limiting described contact support (1).
14. according to arbitrary described circuit breaker operation mechanism in claim 1-13, it is characterized in that: in described contact support (1), form for limiting described snap close (9) after itself and described tripping (2) are threaded off, return back to first positive stop lug boss (32) of its release settling position.
15. according to arbitrary described circuit breaker operation mechanism in claim 1-14, it is characterized in that: in described case for circuit breaker (19), be also provided with electromagnetic system (18), the middle iron core (181) of described electromagnetic system (18) and described tripping (2) the corresponding setting that keeps at a certain distance away, described middle iron core (181) stretches out and promotes described tripping (2) described tripping (2) and described snap close (9) are threaded off.
16. according to arbitrary described circuit breaker operation mechanism in claim 1-15, it is characterized in that: in described case for circuit breaker (19), be provided with thrermostatic bimetal-plate (16), between described tripping (2) and described thrermostatic bimetal-plate (16), be provided with trip link (17), described trip link (17) one end is connected with described tripping (2), the other end is with described thrermostatic bimetal-plate (16) with the corresponding setting of fixed intervals, and described thrermostatic bimetal-plate (16) heated bending promotes described trip link (17) motion and drives described tripping (2) and described snap close (9) to thread off.
CN201310450733.0A 2013-09-27 2013-09-27 Breaker operating mechanism Active CN103545150B (en)

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CN104167333A (en) * 2014-08-20 2014-11-26 加西亚电子电器有限公司 Miniature circuit breaker
CN106206190A (en) * 2016-08-30 2016-12-07 德力西电气有限公司 A kind of divide-shut brake control structure and there is its chopper
CN106548912A (en) * 2015-09-22 2017-03-29 浙江正泰电器股份有限公司 Chopper
CN107293457A (en) * 2016-04-12 2017-10-24 上海良信电器股份有限公司 A kind of contact system structure-improved of breaker
CN109148232A (en) * 2018-07-13 2019-01-04 浙江正泰电器股份有限公司 Breaker
CN109243932A (en) * 2018-10-11 2019-01-18 上海永继电气股份有限公司 A kind of breaker operator system
CN109585233A (en) * 2018-12-28 2019-04-05 浙江正泰电器股份有限公司 Miniature circuit breaker
CN109859966A (en) * 2017-11-30 2019-06-07 常熟开关制造有限公司(原常熟开关厂) A kind of auxiliary switch of switching device
CN113851356A (en) * 2021-09-30 2021-12-28 环宇高科有限公司 Small-size circuit breaker
WO2022007630A1 (en) * 2020-07-08 2022-01-13 江西航同电气科技有限公司 Fixing buckle for plug-in small fuse-type switch device
CN109148232B (en) * 2018-07-13 2024-04-19 浙江正泰电器股份有限公司 Circuit breaker

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CN201117601Y (en) * 2007-10-19 2008-09-17 李剑鸣 Small circuit breaker tripping device
CN202513093U (en) * 2012-03-31 2012-10-31 温州奥来电器有限公司 Bidirectionally wirable electromagnetic leakage circuit breaker with over-current protection
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Cited By (15)

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Publication number Priority date Publication date Assignee Title
CN104167333A (en) * 2014-08-20 2014-11-26 加西亚电子电器有限公司 Miniature circuit breaker
CN106548912A (en) * 2015-09-22 2017-03-29 浙江正泰电器股份有限公司 Chopper
CN107293457A (en) * 2016-04-12 2017-10-24 上海良信电器股份有限公司 A kind of contact system structure-improved of breaker
CN106206190A (en) * 2016-08-30 2016-12-07 德力西电气有限公司 A kind of divide-shut brake control structure and there is its chopper
CN106206190B (en) * 2016-08-30 2018-09-18 德力西电气有限公司 A kind of divide-shut brake control structure and the breaker with it
CN109859966B (en) * 2017-11-30 2024-02-27 常熟开关制造有限公司(原常熟开关厂) Auxiliary switch of switch device
CN109859966A (en) * 2017-11-30 2019-06-07 常熟开关制造有限公司(原常熟开关厂) A kind of auxiliary switch of switching device
CN109148232A (en) * 2018-07-13 2019-01-04 浙江正泰电器股份有限公司 Breaker
CN109148232B (en) * 2018-07-13 2024-04-19 浙江正泰电器股份有限公司 Circuit breaker
CN109243932A (en) * 2018-10-11 2019-01-18 上海永继电气股份有限公司 A kind of breaker operator system
CN109243932B (en) * 2018-10-11 2024-04-09 上海永继电气股份有限公司 Breaker operating system
CN109585233A (en) * 2018-12-28 2019-04-05 浙江正泰电器股份有限公司 Miniature circuit breaker
WO2022007630A1 (en) * 2020-07-08 2022-01-13 江西航同电气科技有限公司 Fixing buckle for plug-in small fuse-type switch device
CN113851356B (en) * 2021-09-30 2023-07-21 环宇高科有限公司 Small-sized breaker
CN113851356A (en) * 2021-09-30 2021-12-28 环宇高科有限公司 Small-size circuit breaker

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