CN201449955U - Undervoltage tripping device of circuit breaker - Google Patents
Undervoltage tripping device of circuit breaker Download PDFInfo
- Publication number
- CN201449955U CN201449955U CN2009200467668U CN200920046766U CN201449955U CN 201449955 U CN201449955 U CN 201449955U CN 2009200467668 U CN2009200467668 U CN 2009200467668U CN 200920046766 U CN200920046766 U CN 200920046766U CN 201449955 U CN201449955 U CN 201449955U
- Authority
- CN
- China
- Prior art keywords
- iron core
- circuit breaker
- tripping device
- snap close
- moving iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Breakers (AREA)
Abstract
An undervoltage tripping device of a circuit breaker belongs to the technical field of accessories additionally arranged on a circuit breaker for the undervoltage protection of wires. The undervoltage tripping device comprises an electromagnetic mechanism, a secondary amplifying mechanism and a base. The electromagnetic mechanism comprises a coil, a movable iron core and a static iron core. The utility model is characterized in that the secondary amplifying mechanism comprises a lock catch, an amplifying drag rod, an energy storing spring and a striking rod; the amplifying drag rod is connected to the base by a pivot, the middle part of the lock catch is connected to the base by a pivot, and one end of the lock catch is provided with a lock hook; one end of the energy storing spring is connected with the amplifying drag rod, and the other end is connected with the base; the striking rod is connected with the amplifying drag rod by a pivot, and corresponds to the lock catch of the operation mechanism of the circuit breaker; an extending rod is formed at the other end of the lock catch, and the movable iron core is connected with the lock catch by fitting the extending rod with the upper end part of the movable iron core. The utility model has the advantages of few parts, simple structure, high precision during the use, low failure rate, reliable operation and good motion stability.
Description
Technical field
The utility model relates to a kind of circuit breaker undervoltage tripping device, is to the improvement of existing circuit breaker with the undervoltage tripping apparatus structure, belongs to the attachment technique field of setting up on circuit breaker that is used for the circuit under voltage protection.
Background technology
Undervoltage tripping device in the prior art comprises: an electromagnetic mechanism and a stored energy mechanism.Described electromagnetic mechanism comprises: a coil, this coil are installed in a centre to have on the skeleton of vestibule; A static iron core and a moving iron core are installed in respectively in the vestibule of described skeleton, and moving iron core and static iron core are formed with the air gap axially disconnected from each other between dynamic and static iron core; One first spring can push described moving iron core to moving away from the static iron core direction; A push rod directly is connected with moving iron core and passes described static iron core.Described stored energy mechanism (claiming the secondary enlarger again) comprising: a locker that has drive part; The strike bar that can drive the circuit breaker snap close is equipped with torsion spring in the locker rotating shaft snap close piece is resetted; One second spring can apply power to hitting bar, makes it resist locker.Push rod on the described moving iron core has a drive end in the outer end, this drive end separates with the drive part of locker.In said structure, because the drive end of moving iron core outer end is (promptly not being connected) of separating with the secondary enlarger, so need first spring be installed between dynamic and static iron core, when under voltage appears in circuit, promote moving iron core by first spring and hit snap close piece; In addition, also need in the snap close piece rotating shaft, install and be used for the torsion spring that snap close piece resets.Therefore amount of parts is many, and structure is complicated, and the management of production and part is made troubles, and operation precision is difficult for guaranteeing simultaneously.
Summary of the invention
Task of the present utility model is to provide a kind of amount of parts few, simple in structure, compact, be convenient to produce the management with part, and operation is reliable, action stability circuit breaker undervoltage tripping device good, that precision is high.
Task of the present utility model is finished like this, a kind of circuit breaker undervoltage tripping device, comprise electromagnetic mechanism, secondary enlarger and pedestal 3, described electromagnetic mechanism comprises coil 13, moving iron core 11 and static iron core 12, coil 13 is arranged on the pedestal 3, and dynamic and static iron core 11,12 places the inner chamber of coil 13 respectively; Be characterized in: described secondary enlarger comprises snap close 21, amplify draw bar 22, energy-stored spring 23 and strike bar 24, described amplification draw bar 22 is pivotally connected on the pedestal 3, the middle part of described snap close 21 is pivotally connected on the pedestal 3, one end of snap close 21 has one and is used for and amplifies the lock hook 211 that draw bar 22 cooperates, one end of described energy-stored spring 23 is connected with amplification draw bar 22, the other end is connected with pedestal 3, described strike bar 24 is pivotally connected with amplification draw bar 22, and it is corresponding with the snap close of circuit breaker operation mechanism, the other end at described snap close 21 is formed with an extension rod 212, and the end, upper end of this extension rod 212 and described moving iron core 11 cooperates and realizes being connected between moving iron core 11 and the snap close 21.
In a specific embodiment of the present utility model, the end, upper end of described moving iron core 11 offers a bonnet lock hole 112, and described extension rod 212 probes in the described bonnet lock hole 112 and realizes being connected between moving iron core 11 and the snap close 21.
In another specific embodiment of the present utility model, the end, upper end of described moving iron core 11 offers a caulking groove 113 with openend, and described extension rod 212 places in the described caulking groove 113 and between the two by pivotally connected.
In another specific embodiment of the present utility model, the vertical sectional shape of described moving iron core 11 is the big T font in bottom for top is little, is formed with confined planes 111 at upper and lower two-part intersection.
In another specific embodiment of the present utility model, yoke cover 14 also is installed on the described pedestal 3, this yoke cover 14 places the top of described coil 13 inner chambers, is used for passing for described moving iron core 11.
In of the present utility model and then specific embodiment, install one in the described yoke cover 14 and be used for the positioning sleeve 15 that the reset position to moving iron core 11 positions.
More of the present utility model and in specific embodiment, be formed with a lug 221 on the described amplification draw bar 22, the position of this lug 221 is corresponding with the position of circuit breaker operation mechanism handle.
In again of the present utility model and then specific embodiment, described strike bar 24 offers a vertical slot 241 in vertical direction, be provided with one and be used for playing the guiding role and guaranteeing to hit the strike axle 25 that bar 24 can only move up and down hitting bar 24 in vertical slot 241, this strikes spools 25 is fixed on the described pedestal 3.
The utility model is owing to after adopting said structure, saved first spring and the snap close rotating shaft torsion spring in the prior art, and not only parts are few, and are simple in structure, and precision improves in use, and failure rate reduces, and operation is reliable, and action stability is good.
Description of drawings
Fig. 1 is an embodiment plane structure chart of the present utility model.
Fig. 2 is the stereochemical structure sketch of Fig. 1 embodiment.
Fig. 3 is another example structure sketch of the present utility model.
Among the figure: 11. moving iron cores, 111. confined planes, 112. bonnet lock holes, 113. caulking grooves, 12. static iron cores, 13. coils, 14. yoke covers, 15. positioning sleeves; 21. snap close, 211. lock hooks, 212. extension rods, 22. amplify draw bar, 221. lugs, 23. energy-stored springs, 24. strike bars, 241. vertical slots, 25. strike axles; 3. pedestal.
Embodiment
By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to technical solutions of the utility model embodiment.
Embodiment 1
See also Fig. 1 and in conjunction with Fig. 2, a kind of circuit breaker of the utility model comprises electromagnetic mechanism, secondary enlarger and pedestal 3 with the undervoltage tripping device.Described electromagnetic mechanism comprises coil 13, moving iron core 11 and static iron core 12, coil 13 is arranged on the pedestal 3, has the inner chamber that is used to hold described moving iron core 11 and static iron core 12 in the centre of coil 13, described moving iron core 11 is positioned at the top of static iron core 12, moving iron core 11 is the cylinders that are made of two parts about major diameter and the minor diameter, its vertical sectional shape is up-small and down-big T font, be formed with confined planes 111 at upper and lower two-part intersection, offer one in the end, upper end of moving iron core 11 and be used for the bonnet lock hole 112 that is connected with described snap close 21.Interior top of chamber at described coil 13 also is provided with a yoke cover 14, this yoke cover 14 is installed on the pedestal 3, moving iron core 11 passes described yoke cover 14 and can overlap in 14 at yoke and moves up and down, in the described yoke cover 14 positioning sleeve 15 is installed, this positioning sleeve 15 cooperates with moving iron core 11, can realize the location to moving iron core 11 reset positions.Here need to prove: the setting of yoke cover 14, one side can be carried out spacing to moving iron core 11, can reduce the leakage field of electromagnetic mechanism on the other hand, increases electromagnetic attraction, makes electromagnetic mechanism compact more.
Please continue to consult Fig. 1 and in conjunction with Fig. 2, described secondary enlarger comprises snap close 21, amplify draw bar 22, energy-stored spring 23 and strike bar 24, described amplification draw bar 22 is pivotally connected on the pedestal 3, also be formed with one on the draw bar 22 and be used for corresponding and can realize the lug 221 that cooperatively interacts between the two amplifying with the position of circuit breaker operation mechanism handle, the middle part of described snap close 21 is pivotally connected on the pedestal 3, one end of snap close 21 has one and is used for and amplifies the lock hook 211 that draw bar 22 cooperates, the other end of snap close 21 is formed with an extension rod 212, this extension rod 212 inserts in the bonnet lock hole 112 of ends, described moving iron core 11 upper end and realizes being connected between moving iron core 11 and the snap close 21. and an end of described energy-stored spring 23 is connected with amplification draw bar 22, the other end of energy-stored spring 23 is connected with pedestal 3, describedly be used for the strike bar 24 that matches with snap close on the circuit breaker operation mechanism and to amplify draw bar 22 pivotally connected, on the vertical direction of hitting bar 24, offer a vertical slot 241, be provided with one and be used for playing the guiding role and guaranteeing to hit the strike axle 25 that bar 24 can only move up and down hitting bar 24 in vertical slot 241, this strikes spools 25 is fixed on the described pedestal 3.
Embodiment 2
In the present embodiment, the end, upper end of described moving iron core 11 offers a caulking groove 113 with openend, described extension rod 212 places in the described caulking groove 113 and between the two by pivotally connected, thereby can realize being connected between moving iron core 11 and the snap close 21.All the other are with the description to embodiment 2.
Application examples
Please continue to consult Fig. 2 and in conjunction with Fig. 1 or Fig. 3, when the voltage at coil 13 two ends during greater than the drop away voltage set point, under the effect of electromagnetic attraction, moving iron core 11 moves downward, and be parked in to clap and close the position, snap close 21 is done the clockwise direction rotation and is parked in reset position under the drive of moving iron core 11.At this moment, the motion if circuit breaker take place to close a floodgate, the handle of circuit breaker operation mechanism contacts with lug 221 on amplifying draw bar 22, and drives and amplify draw bar 22 and do rotation counterclockwise, amplifies draw bar 22 by lock hook 211 pinnings of snap close 21.The moment that moving 11 pairs of snap closes 21 of iron core apply is clockwise direction, the moment that 22 pairs of snap closes 21 of amplification draw bar apply is for counterclockwise, the clockwise moment that moving 11 pairs of snap closes 21 of iron core apply is greater than amplifying the anticlockwise moment that 22 pairs of snap closes 21 of draw bar apply, so snap close 21 remains on the snap close position, the secondary amplifying device is by energy storage, normal operation of circuit breaker.
Please continue to consult Fig. 2 and in conjunction with Fig. 1 or Fig. 3, when the voltage at coil 3 two ends is lower than the drop away voltage set point, the clockwise moment that moving 11 pairs of locking-bars 21 of iron core apply is less than amplifying the anticlockwise moment that 22 pairs of snap closes 21 of draw bar apply, snap close 21 is done rotation counterclockwise, make lock hook 211 on the snap close 21 break away from amplification draw bar 22 cooperate the release of secondary amplifying device.At this moment, under the effect of energy-stored spring 23, amplify draw bar 22 and do rotation counterclockwise, drive is hit bar 24 and is moved upward, and hits the snap close that bar 24 impacts circuit breaker operation mechanism, makes circuit breaker trip.
After the undervoltage tripping device is threaded off, moving iron core 11 and snap close 21 all are in free state, but owing on the moving iron core 11 confined planes 111 is arranged, and moving iron core 11 is interconnective with snap close 21, so can only move within the specific limits after moving iron core 11 and snap close 21 are shaken, moving iron core 11 can not come off, circuit breaker this moment separating brake, and the vibrations of moving iron core and snap close can not bring harmful effect.
Claims (8)
1. circuit breaker undervoltage tripping device, comprise electromagnetic mechanism (1), secondary enlarger (2) and pedestal (3), described electromagnetic mechanism comprises coil (13), moving iron core (11) and static iron core (12), coil (13) is arranged on the pedestal (3), and dynamic and static iron core (11,12) places the inner chamber of coil (13) respectively; It is characterized in that described secondary enlarger comprises snap close (21), amplify draw bar (22), energy-stored spring (23) and strike bar (24), described amplification draw bar (22) is pivotally connected on the pedestal (3), the middle part of described snap close (21) is pivotally connected on the pedestal (3), one end of snap close (21) has one and is used for and amplifies the lock hook (211) that draw bar (22) cooperates, one end of described energy-stored spring (23) is connected with amplification draw bar (22), the other end is connected with pedestal (3), described strike bar (24) is pivotally connected with amplification draw bar (22), and it is corresponding with the snap close of circuit breaker operation mechanism, the other end at described snap close (21) is formed with an extension rod (212), and the end, upper end of this extension rod (212) and described moving iron core (11) cooperates and realizes being connected between moving iron core (11) and the snap close (21).
2. a kind of circuit breaker undervoltage tripping device according to claim 1, the end, upper end that it is characterized in that described moving iron core (11) offers a bonnet lock hole (112), and described extension rod (212) probes in the described bonnet lock hole (112) and realizes being connected between moving iron core (11) and the snap close (21).
3. a kind of circuit breaker undervoltage tripping device according to claim 1, the end, upper end that it is characterized in that described moving iron core (11) offers a caulking groove (113) with openend, and described extension rod (212) places in the described caulking groove (113) and between the two by pivotally connected.
4. a kind of circuit breaker undervoltage tripping device according to claim 1, the vertical sectional shape that it is characterized in that described moving iron core (11) is the big T font in bottom for top is little, is formed with confined planes (111) at upper and lower two-part intersection.
5. a kind of circuit breaker undervoltage tripping device according to claim 1, it is characterized in that also being equipped with on the described pedestal (3) a yoke cover (14), this yoke cover (14) places the top of described coil (13) inner chamber, is used for passing for described moving iron core (11).
6. a kind of circuit breaker undervoltage tripping device according to claim 5 is characterized in that the interior installation one of described yoke cover (14) is used for the positioning sleeve (15) that the reset position that moves iron core (11) is positioned.
7. a kind of circuit breaker undervoltage tripping device according to claim 1 is characterized in that being formed with a lug (221) on the described amplification draw bar (22), and the position of this lug (221) is corresponding with the position of circuit breaker operation mechanism handle.
8. a kind of circuit breaker undervoltage tripping device according to claim 1, it is characterized in that described strike bar (24) offers a vertical slot (241) in vertical direction, be provided with one and be used for playing the guiding role and guaranteeing to hit the strike axle (25) that bar (24) can only move up and down hitting bar (24) in vertical slot (241), this strikes spool (25) is fixed on the described pedestal (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200467668U CN201449955U (en) | 2009-06-24 | 2009-06-24 | Undervoltage tripping device of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200467668U CN201449955U (en) | 2009-06-24 | 2009-06-24 | Undervoltage tripping device of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201449955U true CN201449955U (en) | 2010-05-05 |
Family
ID=42554678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200467668U Expired - Lifetime CN201449955U (en) | 2009-06-24 | 2009-06-24 | Undervoltage tripping device of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201449955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075051A (en) * | 2013-01-09 | 2013-05-01 | 陈军彪 | Shake-proof starting electronic lock and shake-proof method thereof |
-
2009
- 2009-06-24 CN CN2009200467668U patent/CN201449955U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075051A (en) * | 2013-01-09 | 2013-05-01 | 陈军彪 | Shake-proof starting electronic lock and shake-proof method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201417726Y (en) | Shunt tripping device used for circuit breaker | |
| EP2204834A3 (en) | Trip mechanism for circuit breaker | |
| CN103337424B (en) | A kind of permanent magnet releaser | |
| CN203562378U (en) | Action mechanism of novel leakage protection module | |
| CN201449955U (en) | Undervoltage tripping device of circuit breaker | |
| CN202695350U (en) | Under-voltage tripper for breaker | |
| CN203179712U (en) | Electromagnet equipment with permanent magnet | |
| CN204596700U (en) | A kind of vacuum circuit-breaker combined floodgate locking device | |
| CN208507565U (en) | A kind of high pressure bistable state side activated speed vacuum circuit breaker | |
| CN201750081U (en) | Chassis interlocking device of handcart type circuit breaker | |
| CN203910409U (en) | Low-noise electromagnet | |
| CN107833807B (en) | Electromagnetic trip device | |
| CN203812822U (en) | Under-voltage tripping device and breaker | |
| CN202205672U (en) | Undervoltage releasing device for breaker | |
| CN202487512U (en) | Undervoltage tripper | |
| CN103325629B (en) | The resetting-mechanism of dual-interruption point breaker | |
| CN104299029A (en) | Counting device of circuit breaker | |
| CN204271011U (en) | A kind of tripping device for circuit breaker | |
| CN101656158B (en) | Magnetic flow convertor with permanent magnet | |
| CN110957192B (en) | Passive tripping device of medium-voltage switch | |
| CN208589404U (en) | A kind of electromagnetic release mechanism and its breaker for breaker | |
| CN102867706B (en) | Tripping device for circuit breaker | |
| CN206877942U (en) | Electromagnet protecting device and electronic type molded case circuit breaker | |
| CN202332710U (en) | Electric switch-on and switch-off device of vacuum contactor | |
| CN206685340U (en) | Time delay mechanism and circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100505 |
|
| CX01 | Expiry of patent term |