CN104517783B - A kind of operating mechanism of low-voltage circuit breaker - Google Patents
A kind of operating mechanism of low-voltage circuit breaker Download PDFInfo
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- CN104517783B CN104517783B CN201410777202.7A CN201410777202A CN104517783B CN 104517783 B CN104517783 B CN 104517783B CN 201410777202 A CN201410777202 A CN 201410777202A CN 104517783 B CN104517783 B CN 104517783B
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- snap close
- close piece
- tiller
- tripping lever
- spring
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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
- H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
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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
- H01H71/505—Latching devices between operating and release mechanism
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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
- H01H71/521—Details concerning the lever handle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
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Abstract
The operating mechanism of a kind of low-voltage circuit breaker, including a pair cheek (10,11), tiller assembly, elbow linkage, tripping lever (4), tripping lever (1), snap close piece (2), rotating shaft (7) and the moving contact component (8) being installed in rotating shaft (7)；It is characterized in that: described tiller (15) compresses, when being provided with button operation again, the service portion (15c1) acting on snap close piece (2)；At driving handle (14), chopper is detained in operating process again, the described service portion (15c1) of tiller (15) compress driving snap close piece (2) and be allowed to reset.Present invention, avoiding and snap close piece directly contacted driving detaining tripping lever in operating process again, thus avoid the malformation caused because intense contact clashes into lose efficacy.
Description
Technical field
Present invention relates particularly to the operating mechanism of a kind of low-voltage circuit breaker.
Background technology
The operating mechanism of low-pressure plastic shell circuit breaker, for performing connection and the breaking operation of breaker fracture.The actuating operating mechanism unblock trip action when the release apparatus of chopper detects circuit abnormality electric current, thus disconnecting circuit；When, after the failture evacuation causing circuit abnormality, first having to that chopper is implemented to detain operation again and make operating mechanism reset, implement closing operation the most again thus complete reclosing of circuit.
The utility model patent of prior art such as notification number CN203038867U, a kind of low-pressure plastic shell circuit breaker operating mechanism as above of this patent publicity, its elbow linkage tends to horizontal direction and arranges, main spring hanging point position on tiller separates with the installation site of handle, its snap close piece is horizontally placed on the lower section of elbow linkage, form the position of hasp and be placed in the both sides of its pivotal axis with contacting of tripping lever and tripping lever (i.e. retainer) thus present the leverage of stress, the operating mechanism being arranged so as to possesses miniaturization advantage, it is particularly advantageous for the height dimension of reducing mechanism.The button again of this operating mechanism resets what operation was typically performed such, tripping lever and elbow linkage is driven by driving handle, order about tripping lever and back down the stop dropping place of snap close piece, snap close piece enters the pre-contact state with tripping lever (i.e. retainer) under its action of reset spring, the driving to handle is discharged after putting in place, then tripping lever, snap close piece and retainer keep the hasp state contacted two-by-two, complete to detain reset operation again.Specifically, the effect trend of the back-moving spring of described snap close piece is for promoting snap close piece homing action, detain operating process again, snap close piece is provided to hinder the resistance that tripping lever resets, cause tripping lever to reset and have to back down the obstruction of snap close piece, the resistance part that need to overcome comes from the active force of back-moving spring, another part comes from tripping lever and backs down the friction effect that the contact force of snap close piece process is brought, therefore, this mechanism detaining operating principle again is used the most all can to there is following hidden danger:
Contact frequently between tripping lever and snap close piece and easily cause abrasion, higher to the hardness requirement of material, particularly, if detain again operation be driven by motor or air pump release can mode drive, owing to there is the contact site easily deformation failure of stronger shock effect, tripping lever and snap close piece.
Summary of the invention
It is an object of the invention to provide the operating mechanism of a kind of low-pressure plastic shell circuit breaker, operating process is avoided tripping lever the directly contact driving of snap close piece can be realized function same as the prior art detaining again.
For reaching above-mentioned purpose, the technical solution used in the present invention is: the operating mechanism of a kind of low-voltage circuit breaker, including a pair cheek, tiller assembly, elbow linkage, tripping lever, tripping lever, snap close piece, rotating shaft and the moving contact component being installed in rotating shaft；Described tiller assembly includes tiller and handle；Described elbow linkage includes upper connecting rod and the lower link being pivotally connected around a common axis, is connected with main spring between common axis and described tiller；It is supported on described cheek described tripping lever rotation, and is pivotally connected with upper connecting rod；Described rotating shaft is pivotally connected around a pivot with described lower link, and realizes rotating by the action of described elbow linkage；Contact with each other locking and snap close piece and tripping lever of described tripping lever and snap close piece contacts with each other locking and realizes the padlock of chopper, drives elbow linkage action by operate handle and realizes connection and the breaking operation of chopper；Described tiller compresses, when being provided with button operation again, the service portion acting on snap close piece；At driving handle, chopper is detained in operating process again, the described service portion of tiller compress driving snap close piece and be allowed to reset.
In such scheme, described operating mechanism also includes a spring, and this spring acts on snap close piece；Detaining chopper again in operating process at driving handle, the spring force of described spring pulls and supports snap close piece, interferes the motion of tripping lever on the movement locus of tripping lever to avoid snap close piece to move to.
In such scheme, described snap close piece is that U-shaped is shaft-like, and including two support arms and the tie-beam of connection two support arm one end, its two support arm pivots, with described cheek, two concentric shafts coupled and is positioned the region, centre position of support arm；Two arm ends of described snap close piece contact cooperation with tripping lever, and described tie-beam coordinates with tripping lever contact, to constitute padlock steady statue；It is provided with the auxiliary section coordinated that offsets therewith, and the region that this matching part is between described concentric shafts and arm end corresponding to described service portion on two support arms of described snap close piece.
Further, described operating mechanism also includes a spring；It is arranged at the first upper arm in the region near arm end on one support arm of described snap close piece, it is provided with the second upper arm on cheek corresponding to described first upper arm side, and second upper arm be positioned at the top of the first upper arm, described spring is stretching spring, and its two ends buckle in the first upper arm and the second upper arm；Detaining chopper again in operating process at driving handle, the spring force of described spring pulls and supports snap close piece, interferes the motion of tripping lever on the movement locus of tripping lever to avoid snap close piece to move to.
In such scheme, described tiller is one inverted U-shaped shaft-like, including top cross-bar and two downward support arms, one is had protruding for installing the bending of handle in described top cross-bar, and two support arms of described tiller are provided with the first Y shape bayonet socket, tiller is pivotally connected through pivot with cheek by this first Y shape bayonet socket, the line of and first Y shape bayonet socket protruding with the bending of described tiller is as basis reference, on two support arms of described tiller, the direction, side towards described basis reference is provided with the first elongated end, this first elongated end is provided with the second Y shape bayonet socket for installing main spring hanging scroll, described service portion is also located on described first elongated end.
Further, on two support arms of described tiller, the opposite side direction relative to the first elongated end towards described basis reference is provided with the second elongated end；When chopper generation contact melting welding fault, the pivot between the movement locus of described second elongated end and lower link and rotating shaft interferes locking, stops " OFF " location status of handle instruction chopper.
Owing to have employed technique scheme, compared with prior art the invention have the advantages that
1) chopper is detained in operating process by the present invention at driving handle again, there is not intersection point in the movement locus of tripping lever and the movement locus of snap close piece, do not come in contact, it is to avoid the malformation caused because intense contact clashes between tripping lever and snap close piece was lost efficacy；
2) present invention is by operation handle, snap close piece is driven to reset with the service portion on tiller, tiller contacts cooperation for high-amplitude drive connection with snap close piece, the gear ratio relation appropriate design coordinating contact can realize detaining the technology requirement of operation of resetting again, this kind of drive simple in construction and easy and simple to handle；
3) circuit ON process of the present invention works as chopper generation melting welding fault or other other fault unpredictable, cause chopper can not disjunction circuit time, by the second elongated end on tiller with between lower link and rotating shaft pivot contact interference, stop " OFF " location status of tiller instruction chopper thus send warning signal, avoid operator's maloperation that electric shock injury accident occurs, it is ensured that operation safety.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention operating mechanism structural representation；
Fig. 2 is embodiment of the present invention operating mechanism and alarm signal trigger mechanism explosive view；
Fig. 3 is embodiment of the present invention operating mechanism trip status perspective view；
Fig. 4 is that operating limit state perspective view detained again by embodiment of the present invention operating mechanism；
Fig. 5 is the perspective view of embodiment of the present invention operating mechanism buckle-like state again；
Fig. 6 is the structural representation of embodiment of the present invention tiller；
Tiller locking position view when Fig. 7 is embodiment of the present invention contact melting welding；
The principle floor map that when Fig. 8 is embodiment of the present invention contact melting welding, tiller locking is spacing；
The principle schematic perspective view that when Fig. 9 is embodiment of the present invention contact melting welding, tiller locking is spacing.
In the figures above: 1, tripping lever；1a, hasp portion；2, snap close piece；2a, support arm；2a1, end；2b, tie-beam；2c, concentric shafts；2d, concentric shafts；2e, auxiliary section；2f, crossbeam；2g, the first upper arm；4, tripping lever；4a, hasp portion；4b, tripping projection；5, upper connecting rod；6, lower link；7, rotating shaft；8, moving contact component；9, static contact component；10, cheek；10a, the second upper arm；101, tripping lever pivot rotating shaft；102, tiller pivotal axis；11, cheek；11b, bending backstop；111, tripping lever pivot rotating shaft；112, tiller pivotal axis；12, cross bar；14, handle；15, tiller；15a, the first Y shape bayonet socket；15b, bending projection；15c, the first elongated end；15c1, service portion；15c2, the second Y shape bayonet socket；15d, the second elongated end；15e, top cross-bar；16, drive shaft；17, Step Shaft；18, common axis；19, pivot；20, spring；30, main spring.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Embodiment: see shown in Fig. 1-9:
The present embodiment relates to the operating mechanism of a kind of low-pressure plastic shell circuit breaker.
As shown in Figure 1, Figure 2, Figure 3 shows, the operating mechanism of a kind of low-voltage circuit breaker, including a pair cheek 10,11, tiller assembly, elbow linkage, tripping lever 4, tripping lever 1, snap close piece 2, rotating shaft 7 and the moving contact component 8 that is installed in rotating shaft 7.
As shown in Figure 1, Figure 2, Figure 3 shows, described tiller assembly includes tiller 15 and handle 14, and what tiller 15 rotated is supported on described cheek 10,11, and handle 14 is installed on tiller 15.Described elbow linkage includes upper connecting rod 5 and the lower link 6 being pivotally connected around a common axis 18, being connected with main spring 30 between common axis 18 and described tiller 15, main spring 30 mount point of the handle 14 on hanging point and tiller 15 on tiller 15 is positioned at the position being separated from each other.Described tripping lever 4 is pivotally supported on described cheek 10,11, and is pivotally connected with upper connecting rod 5；Described rotating shaft 7 is pivotally connected around a pivot 19 with described lower link 6, and realizes rotating by the action of described elbow linkage；Described snap close piece 2 is arranged at the lower section of described tiller 15；Contact with each other locking and snap close piece 2 and tripping lever 4 of described tripping lever 1 and snap close piece 2 contacts with each other locking and realizes the padlock of chopper, by driving elbow linkage action to realize connection and the breaking operation (patent CN203038867U described in the annexation visible background technology of detailed above-mentioned each part) of chopper the operation of handle 14.
As shown in Figure 1, Figure 2, Figure 3 shows, the core of the present embodiment is: described tiller 15 compresses, when being provided with button operation again, the service portion 15c1 acting on snap close piece 2；At driving handle 14, chopper is detained in operating process again, the described service portion 15c1 of tiller 15 compress driving snap close piece 2 and be allowed to reset.Detaining chopper again in operating process at driving handle 14, there is not intersection point in the movement locus of described tripping lever 4 and the movement locus of snap close piece 2.
As shown in Figure 1, Figure 2, Figure 3 shows, described snap close piece 2 is that U-shaped is shaft-like, including two support arm 2a and connect two concentric shafts 2c that tie-beam 2b, its two support arm 2a and described cheek 10,11 pivot of two support arm 2a one end couples, 2d is positioned the region, centre position of support arm 2a；Two support arm 2a end 2a1 of described snap close piece 2 contact cooperation with tripping lever 1, and described tie-beam 2b contacts cooperation with tripping lever 4, to constitute padlock steady statue；It is provided with the auxiliary section 2e coordinated that offsets therewith, and the region that this auxiliary section 2e is between described concentric shafts 2c, 2d and arm end 2a1 corresponding to described service portion 15c1 on two support arm 2a of described snap close piece 2.
As shown in Figure 1, Figure 2, Figure 3 shows, described operating mechanism also includes a spring 20；It is arranged at the first upper arm 2g in the region near arm end 2a1 on one support arm 2a of described snap close piece 2, it is provided with the second upper arm 10a on cheek 10 corresponding to described first upper arm 2g side, and second upper arm 10a be positioned at the top of the first upper arm 2g, described spring 20 is stretching spring, and its two ends buckle in the first upper arm 2g and the second upper arm 10a；Detaining chopper again in operating process at driving handle 14, the spring force of described spring 20 pulls and supports snap close piece 2, interferes the motion of tripping lever 4 on the movement locus of tripping lever 4 to avoid snap close piece 2 to move to.Specifically, being additionally provided with cross bar 12 in the lower section of snap close piece 2, this cross bar 12 connects cheek 10 and 11 fastening location, the most also as the limit stops of snap close piece during trip status 2.When trip status, snap close piece 2 one end is by spring 20 pulling and supporting upwards, and other end bottom is resisted against cross bar 12, reaches stable state.And, under circuit breaker tripping state, the active force of this spring 20 also forces snap close piece 2 to rotate clockwise, i.e. spring 20 serves the effect stoping snap close piece 2 to fall after rise, the most just instead of the patent described in background technology (CN203038867U) crook and the effect buckled, the present embodiment is no need for separately arranging crook and buckling.
nullSuch as Fig. 1、Fig. 2、Shown in Fig. 3，Described tiller 15 is one inverted U-shaped shaft-like，Including top cross-bar 15e and two downward support arms，One is had for installing bending projection 15b of handle 14 in described top cross-bar 15e，And two support arms of described tiller 15 are provided with the first Y shape bayonet socket 15a，Tiller 15 is by this first Y shape bayonet socket 15a and cheek 10、11 are pivotally connected through pivot，With bending projection 15b of described tiller 15 and the line of the first Y shape bayonet socket 15a as basis reference，On two support arms of described tiller 15, the direction, side (being directed towards tripping lever 1 side as shown in the figure) towards described basis reference is provided with the first elongated end 15c，This first elongated end 15c is provided with the second Y shape bayonet socket 15c2 for installing main spring hanging scroll 17，Described service portion 15c1 is located at the bottom of described first elongated end 15c.And the opposite side direction (i.e. towards rotating shaft 7 side) relative to the first elongated end 15c towards described basis reference is provided with the second elongated end 15d on two support arms of tiller (15)；When chopper generation contact melting welding fault, the pivot 19 between the movement locus of described second elongated end 15d and lower link 6 and rotating shaft 7 interferes locking, stops handle 14 to indicate " OFF " location status of chopper.
It addition, tripping projection 4b contacts the position defining trip status tripping lever 4 with cheek bending backstop 11b, rotating shaft 7 is placed restrictions on location by circuit breaker base (not shown), has been thereby determined that the location status of trip status linkage system.Two ends are affiliated to be connected in the main spring 30 of tiller Step Shaft 17 and upper and lower connecting rod coupling spindle 18 respectively, and to tend to level horizontal.
Specifically, as in figure 2 it is shown, tiller 15 and snap close piece 2 are arranged for stacked on top of one another in mechanism's cheek 10,11, two support arms of tiller 15 and extension support arm are right against two support arm 2a of snap close piece 2, stacked on top of one another the most respectively.
The present embodiment detains operational motion principles illustrated again:
As shown in Figure 3, circuit breaker tripping state: under main spring 30 active force drives, tripping projection 4b contacts with cheek bending backstop 11b, rotating shaft 7 contacts with pedestal (not shown), hub setting drive shaft 16 on tiller 15 rests on tripping lever 4, thus, tripping lever 4, elbow linkage, rotating shaft 7 and tiller 15 are in steady statue.Snap close piece 2 has the movement tendency of diagram clockwise direction under spring 20 acts on, and by the contactor banking stop of snap close piece 2 with the crossbeam 12 being arranged on cheek 10,11, is in steady statue, and the tie-beam 2b of snap close piece 2 is away from the hasp portion 4a of tripping lever 4.
Detaining operating process again, in conjunction with Fig. 3 to Fig. 4 again to the state of Fig. 5, tripping lever 4 pivots around the centre of gyration under the drive of handle 14 and tiller 15, there is not intersection point in the movement locus of its hasp portion 4a and the tie-beam 2b of snap close piece 2, therefore, tripping lever 4 can freely arrive and buckle reset position again, this detains operating process tripping lever 4 the most again and need to back down snap close piece 2 to limit the operating principle realizing resetting with breaker of plastic casing is visibly different, thus, tripping lever 4 reseting procedure will not be by the inhibition of snap close piece 2, avoid the malformation caused due to intense contact to lose efficacy.
Due to the spring 20 on snap close piece 2 in the application function and in the past function as the main reset power source of snap close piece there occurs the change of essence, function here is to pull and support snap close piece 2 by spring force thus avoid its interference restriction to tripping lever 4 snapping through journey again.Accordingly, it would be desirable to other model of action realizes the reset operation of button again of snap close piece 2.Concrete mode is exactly: tiller 15 and snap close piece 2 are arranged for stacked on top of one another in mechanism's cheek, and the reseting movement direction trend detaining both operating process again is consistent, it is diagram rotate in an anti-clockwise direction, therefore, detaining operating process again can use tiller 15 that the contact of snap close piece 2 has driven reset operation, both contacts coordinate for high-amplitude drive connection, the gear ratio relation appropriate design coordinating contact can realize detaining the technology requirement of operation of resetting again, this kind of drive simple in construction and easy and simple to handle.
Particularly, carry out action by contact with the auxiliary section 2e on the support arm 2a with snap close piece 2 of the service portion 15c1 on the first elongated end 15c of tiller 15, thus order about snap close piece 2 and reset.Operating process describes: detain reset operating process again, external force is ordered about handle 14 and is illustrated rotate in an anti-clockwise direction, handle 14 drives tripping lever 4 counterclockwise to reset operation around hub setting axle diagram on cheek 10,11 by transmitting the action of tiller 15 and drive shaft 16, synchronize, after certain stroke, need to drive snap close piece 2 homing action.Needing in this series of course of action to coordinate: the homing action of tripping lever 4 to complete before the homing action of snap close piece 2, after i.e. the hasp portion 4a at tripping lever 4 crosses the tie-beam 2b of snap close piece 2, snap close piece 2 just starts the operation that resets.Therefore, the auxiliary section 2e action by contact of the service portion 15c1 on the first elongated end 15c of tiller 15 and snap close piece 2 support arm 2a is high-amplitude drive connection, by the appropriate design of gear ratio, after realizing the tie-beam 2b that tripping lever 4 hasp portion 4a crosses snap close piece 2, snap close piece 2 moves and puts in place, it is achieved the movement relation coupling of tripping lever 4 and snap close piece 2.
As shown in Figure 4, tripping lever 4 reaches to buckle the extreme position of operation again, snap close piece 2 also arrives at extreme position under the driving of the service portion 15c1 of tiller 15, now it is reserved with gap between the end 2a1 and the hasp portion 1a of tripping lever 1 of snap close piece 2, it is reserved with gap between the tie-beam 2b and the hasp portion 4a of tripping lever 4 of snap close piece 2, when the release drive force source to handle, then under the effect of main spring 30, between tripping lever 4 and snap close piece 2, snap close piece 2 and tripping lever 1, difference snap lock, completes to detain operation again.Again buckle-like state as it is shown in figure 5, now tiller 15 service portion 15c1 and the auxiliary section 2e of snap close piece 2 between keep certain gap.Thus, chopper completes to detain reset operation again, by driving the diagram of handle 14, tiller 15 clockwise, and then can drive elbow linkage under main spring 30 acts on, it is achieved the making operation between moving contact component 8 and static contact component 9；Further by the counter clockwise direction of handle 14, tiller 15 is driven, it is achieved the opening operation between moving contact component 8 and static contact component 9, thus realize connection and the disjunction of circuit.
The present embodiment chopper melting welding fault lower handle motion locking principles illustrated:
As shown in Fig. 6 and Fig. 7, Fig. 8, Fig. 9, first elongated end 15c of tiller 15 is partial to tripping lever 1, it is positioned at the line of bending projection 15b on described tiller 15 and the first Y shape bayonet socket 15a and the opposite side of basis reference is provided with the second elongated end 15d, the first i.e. described elongated end 15c and the second elongated end 15d is distributed in the both sides of described basis reference, and its second elongated end 15d is partial to rotating shaft 7.When chopper generation contact melting welding fault or other meeting cause the fault that contact cannot disconnect; owing to the movement locus of the second described elongated end 15d can interfere locking with the pivot 19 of lower link 6 and rotating shaft 7; and it is that a position before driving handle arrives " OFF " indicating positions interferes locking; the position of Fig. 7 acceptance of the bid " A " i.e. represents locking position, and this locking position is positioned at the zone line of circuit breaker handle instruction " OFF " and " ON " position；When the release driving effect to handle 14, handle 14 can reply instruction " ON " position under main spring 30 acts on.There is unusual condition in teaching process person chopper in this way, plays forewarning function, it is to avoid operator's maloperation and there is electric shock injury accident, it is ensured that operation safety.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.
Claims (6)
1. an operating mechanism for low-voltage circuit breaker, including a pair cheek (10,11), tiller assembly, elbow linkage, tripping lever (4), tripping lever (1), snap close piece (2), rotating shaft (7) and the moving contact component (8) being installed in rotating shaft (7)；Described tiller assembly includes tiller (15) and handle (14)；Described elbow linkage includes upper connecting rod (5) and the lower link (6) being pivotally connected around a common axis (18), is connected with main spring (30) between common axis (18) and described tiller (15)；Described tripping lever (4) is pivotally supported on described cheek (10,11), and is pivotally connected with upper connecting rod (5)；Described rotating shaft (7) is pivotally connected around a pivot (19) with described lower link (6), and realizes rotating by the action of described elbow linkage；Contact with each other locking and snap close piece (2) and tripping lever (4) of described tripping lever (1) and snap close piece (2) contacts with each other locking and realizes the padlock of chopper, drives elbow linkage action by operate handle (14) and realizes connection and the breaking operation of chopper；It is characterized in that:
Described tiller (15) compresses, when being provided with button operation again, the service portion (15c1) acting on snap close piece (2)；At driving handle (14), chopper is detained in operating process again, the described service portion (15c1) of tiller (15) compress driving snap close piece (2) and be allowed to reset.
The operating mechanism of low-voltage circuit breaker the most according to claim 1, it is characterised in that: described operating mechanism also includes that a spring (20), this spring (20) act on snap close piece (2)；Detaining chopper again in operating process at driving handle (14), the spring force of described spring (20) pulls and supports snap close piece (2), interferes the motion of tripping lever (4) on the movement locus of tripping lever (4) to avoid snap close piece (2) to move to.
The operating mechanism of low-voltage circuit breaker the most according to claim 1, it is characterized in that: described snap close piece (2) is that U-shaped is shaft-like, including two support arms (2a) and the tie-beam (2b) of connection two support arms (2a) one end, its two support arm (2a) pivots, with described cheek (10,11), two concentric shafts (2c, 2d) coupled and is positioned the region, centre position of support arm (2a)；Two support arms (2a) end (2a1) of described snap close piece (2) contacts cooperation with tripping lever (1), and described tie-beam (2b) contacts cooperation with tripping lever (4), to constitute padlock steady statue；It is provided with the auxiliary section (2e) coordinated that offsets therewith on two support arms (2a) of described snap close piece (2) corresponding to described service portion (15c1), and this auxiliary section (2e) is positioned at the region between described concentric shafts (2c, 2d) and arm end (2a1).
The operating mechanism of low-voltage circuit breaker the most according to claim 3, it is characterised in that: described operating mechanism also includes a spring (20)；It is arranged at the first upper arm (2g) in the region near arm end (2a1) on one support arm (2a) of described snap close piece (2), it is provided with the second upper arm (10a) on cheek (10) corresponding to described first upper arm (2g) side, and second upper arm (10a) be positioned at the top of the first upper arm (2g), described spring (20) is stretching spring, and its two ends buckle in the first upper arm (2g) and the second upper arm (10a)；Detaining chopper again in operating process at driving handle (14), the spring force of described spring (20) pulls and supports snap close piece (2), interferes the motion of tripping lever (4) on the movement locus of tripping lever (4) to avoid snap close piece (2) to move to.
nullThe operating mechanism of low-voltage circuit breaker the most according to claim 1，It is characterized in that: described tiller (15) is one inverted U-shaped shaft-like，Including top cross-bar (15e) and two downward support arms，One is had protruding (15b) for installing the bending of handle (14) in described top cross-bar (15e)，And two support arms of described tiller (15) are provided with the first Y shape bayonet socket (15a)，Tiller (15) is by this first Y shape bayonet socket (15a) and cheek (10、11) it is pivotally connected through pivot，With the line of the bending of described tiller (15) protruding (15b) and the first Y shape bayonet socket (15a) as basis reference，On two support arms of described tiller (15), the direction, side towards described basis reference is provided with the first elongated end (15c)，This first elongated end (15c) is provided with the second Y shape bayonet socket (15c2) for installing main spring hanging scroll (17)，Described service portion (15c1) is also located on described first elongated end (15c).
The operating mechanism of low-voltage circuit breaker the most according to claim 5, it is characterised in that: on two support arms of described tiller (15), the opposite side direction relative to the first elongated end (15c) towards described basis reference is provided with the second elongated end (15d)；When chopper generation contact melting welding fault, the pivot (19) between the movement locus of described second elongated end (15d) and lower link (6) and rotating shaft (7) interferes locking, stops " OFF " location status of handle (14) instruction chopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777202.7A CN104517783B (en) | 2014-12-15 | 2014-12-15 | A kind of operating mechanism of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777202.7A CN104517783B (en) | 2014-12-15 | 2014-12-15 | A kind of operating mechanism of low-voltage circuit breaker |
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|---|---|---|---|---|
| US5070361A (en) * | 1990-11-30 | 1991-12-03 | General Electric Company | Molded case circuit breaker operating mechanism assembly |
| CN1365506A (en) * | 2000-03-17 | 2002-08-21 | 通用电气公司 | High energy closing mechanism for circuit breakers |
| CN2752948Y (en) * | 2004-08-25 | 2006-01-18 | 陈志贤 | Small type circuit breaker operating mechanism |
| CN101335161A (en) * | 2008-08-05 | 2008-12-31 | 无锡唯特电气技术有限公司 | Simple operation mechanism for circuit cutter |
| CN203038867U (en) * | 2012-12-28 | 2013-07-03 | 常熟开关制造有限公司(原常熟开关厂） | Operating mechanism of circuit breaker |
| CN204289295U (en) * | 2014-12-15 | 2015-04-22 | 常熟开关制造有限公司(原常熟开关厂） | A kind of operating mechanism of low-voltage circuit breaker |
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2014
- 2014-12-15 CN CN201410777202.7A patent/CN104517783B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070361A (en) * | 1990-11-30 | 1991-12-03 | General Electric Company | Molded case circuit breaker operating mechanism assembly |
| CN1365506A (en) * | 2000-03-17 | 2002-08-21 | 通用电气公司 | High energy closing mechanism for circuit breakers |
| CN2752948Y (en) * | 2004-08-25 | 2006-01-18 | 陈志贤 | Small type circuit breaker operating mechanism |
| CN101335161A (en) * | 2008-08-05 | 2008-12-31 | 无锡唯特电气技术有限公司 | Simple operation mechanism for circuit cutter |
| CN203038867U (en) * | 2012-12-28 | 2013-07-03 | 常熟开关制造有限公司(原常熟开关厂） | Operating mechanism of circuit breaker |
| CN204289295U (en) * | 2014-12-15 | 2015-04-22 | 常熟开关制造有限公司(原常熟开关厂） | A kind of operating mechanism of low-voltage circuit breaker |
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| CN104517783A (en) | 2015-04-15 |
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