CN204215985U - A kind of miniature circuit breaker tripgear - Google Patents
A kind of miniature circuit breaker tripgear Download PDFInfo
- Publication number
- CN204215985U CN204215985U CN201420569497.4U CN201420569497U CN204215985U CN 204215985 U CN204215985 U CN 204215985U CN 201420569497 U CN201420569497 U CN 201420569497U CN 204215985 U CN204215985 U CN 204215985U
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- Prior art keywords
- tripgear
- circuit breaker
- sealed tube
- torsion spring
- miniature circuit
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Abstract
The utility model discloses a kind of miniature circuit breaker tripgear, comprises, sealed tube (4), and described sealed tube (4) upper end involution has pole block (6), is also embedded with banking stop 13 above the block of described pole; Movable plate, be arranged in parallel with described sealed tube (4), described movable plate comprises horizontal movable type head (7) and the moveable arm (8) vertical with described movable type head (7), described movable type head (7) is positioned at below described banking stop (13) one end, described moveable arm (8) middle part is provided with hanging hole (9), and described hanging hole hangs trip(ping) bar in (9); Carriage (10), described carriage (10) upper end is close to described moveable arm (8) and is played a supportive role; Torsion spring (12), described torsion spring (12) comprises the first external part and the second external part; Wherein, described loading coil (5) access overcurrent, described pole block (6) produces magnetic flux, it is close to described pole block (6) that described movable plate overcomes described torsion spring (12) twisting force, described trip(ping) bar is deviate from described hanging hole (9), and circuit disconnects; Described movable plate is replied under described torsion spring (12) twisting force.
Description
Technical field
The utility model relates to a kind of circuit breaker, particularly a kind of miniature circuit breaker tripgear.
Background technology
Usual miniature circuit breaker (Miniature Circuit Breaker; MCB) be arranged on circuit; to protect family or industrial power distribution disc system, be block the dangerous currents that overload, overcurrent or short circuit current and Simple line occur, the device of protection subordinate end or load.
Tripgear is the key fitment of miniature circuit breaker, when accessing the dangerous currents such as overcurrent, the inflow that contact blocks electric current can be opened, existing tripgear is divided into heat-sensitive type and complete electromagnetic type two kinds usually: the armature that the bimetal leaf that heat-sensitive type circuit breaker is heated by overcurrent forms moves, now trip mechanism starts, and makes circuit breaker trip; Complete electromagnetic type, then in trigger architecture, to be above standard value by the electric current of coil, and the principle according to electromagnet can generate magnetic flux, attracts armature, and now trip mechanism starts, and makes breaker of plastic casing trip.
In described mode, when there is overcurrent or short circuit accident in heat-sensitive type tripgear, the heat that abnormal current occurs can cause the thermal deformation of bimetal leaf, and mechanicalness promotes the open contact of tripping operation utensil then.The shortcoming of this heat-sensitive type tripgear is: can need the regular hour in bimetal leaf generation thermal deformation process, and when overcurrent or short circuit blocking-up capacity exceed the capacity of setting, contact portion there will be thermal weld or tripping operation utensil damages.
Electromagnetic type tripgear is response time delay issue for solving this heat-sensitive type tripgear and designs, by oil damper (Oil Dash Pot, ODP) and be wound around oil damper loop construction composition, if to be above standard value by the electric current of coil, principle according to electromagnet can generate magnetic flux, the plunger (Plunger) of oil damper inside moves according to the direction contacted with pole block, attract the armature (Amature) of top, now start with the trip mechanism of described armature linkage, make circuit breaker trip.
In sum, the tripgear of circuit breaker can possess multiple constituted mode, but in order to reduce the size of circuit breaker itself, is in trend miniaturized gradually at present.
As an example of miniature circuit breaker, Japanese Patent Publication is commented in No. 7-141978 (the startup utensil of circuit breaker), have recorded the tripgear about oil damper mode, this tripgear adopts movable plate (armature) in the side of pole block.This structure has the advantage reducing circuit breaker volume, but for preventing movable plate disengaging configuration, have employed the structure of leaf spring, it is relatively weak that this makes movable plate get back to the recuperability of origin-location, so can there is movable plate cannot return to the position of original retrogressing situation from the trip position sucked by pole block, occurring cannot the fault of fixed-handle circuit breaker bar.The connection below of movable plate and the structure of leaf spring lower end is adopted upwards to change position to prevent movable plate in this patent, but only backup plate spring, can not prevent movable plate position from changing completely, if movable plate changes position, then the movable type head of this movable plate upper end can depart from from the side of pole block, would not tripping, therefore there is credible low problem to blocking abnormal current.
Based on the above, a kind of necessary property of exploitation with the miniature circuit breaker tripgear of abundant restoring force.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of miniature circuit breaker tripgear, is intended to realize circuit breaker miniaturization, and makes movable plate possess sufficient restoring force, and prevents movable plate position from changing.
For realizing described object, the utility model is achieved through the following technical solutions:
A kind of miniature circuit breaker tripgear, comprise, sealed tube 4, in tubular construction, described sealed tube 4 outer wall is wound with loading coil 5, and described sealed tube 4 upper end involution has pole block 6, is also embedded with banking stop 13 above the block of described pole; Movable plate, be arranged in parallel with described sealed tube 4, described movable plate is bending structure, described movable plate comprises horizontal movable type head 7 and the moveable arm 8 vertical with described movable type head 7, described movable type head 7 is positioned at block 6 side, described pole, and described movable type head 7 is positioned at below described banking stop 13 one end, is provided with hanging hole 9 in the middle part of described moveable arm 8, hangs trip(ping) bar in described hanging hole 9; Carriage 10, described carriage 10 upper end is close to described moveable arm 8 and is played a supportive role; Torsion spring 12, described torsion spring 12 comprises the first external part and the second external part, and described first external part hooking is in described moveable arm 8 side, and described second external part is hooked in the middle part of described carriage 10; Wherein, described loading coil 5 accesses overcurrent, and described pole block 6 produces magnetic flux, and described movable plate overcomes that described torsion spring 12 twisting force is close to described pole block 6, and described trip(ping) bar is deviate from described hanging hole 9, and circuit disconnects; Described movable plate is replied under described torsion spring 12 twisting force.
Preferably, described miniature circuit breaker tripgear, wherein, described tripgear also comprises a magnetic frame 1, and described magnetic frame 1 is in plate-like structure, and described magnetic frame 1 is provided with the first installing hole 2 and the second installing hole 3.
Preferably, described miniature circuit breaker tripgear, wherein, described sealed tube 4 bottom is embedded in described first installing hole 2, and described moveable arm 8 bottom is embedded in described second installing hole 3.
Preferably, described miniature circuit breaker tripgear, wherein, described magnetic frame 1 is also provided with torsion spring fixed frame 12 for fixing torsion spring 12.
Preferably, described miniature circuit breaker tripgear, wherein, described sealed tube 4 is nonmagnetic substance, the built-in decelerate fluid of described sealed tube 4, magnetic plunger and disc spring, described decelerate fluid riddles in described sealed tube 4, is connected between described magnetic plunger with described pole block 6 by helical spring.
Delay tripping and immediate trip is realized by the design of sealed tube, delay tripping is namely when flowing into medium overcurrent in described loading coil, due to the increase of magnetic flux, the power that described plunger produces exceedes helical spring and is applied to the resistance of plunger and the resistance of decelerate fluid, described plunger is made to start to move to described pole block, closed interval between described pole block and described plunger, described movable type head is by described pole block magnetic attraction, laterally move towards described pole block relative to described loading coil axis, described pole block and the adhesive of described movable type head, the pulling force that described movable plate overcomes described torsion spring moves to the second place, thus the trip(ping) bar hung on described movable plate hanging hole is deviate from described hanging hole, Disjoncteur trips, instantaneous tripping is namely when overcurrent serious in loading coil or short circuit, described pole block produces enough large magnetic force instantaneously, described movable type head can be inhaled to pole block, described pole block and the adhesive of described movable type head, the pulling force that described movable plate overcomes described torsion spring moves to the second place, described trip(ping) bar is deviate from described hanging hole, and Disjoncteur trips.
Preferably, described miniature circuit breaker tripgear, wherein, described pole block 6 adopts notch cuttype cylindrical structure, and the basal diameter of described notch cuttype cylindrical structure reduces from bottom to top step by step.
Preferably, described miniature circuit breaker tripgear, wherein, described banking stop 13 lower surface establishes groove, and described groove and described pole block 6 nose-circle cylinder match.
Preferably, described miniature circuit breaker tripgear, wherein, described movable type head 7 is concave structure near block 6 one end, described pole, described concave structure and described pole block 6 sidewall match, and the spacing between the outstanding outer of described concave surface and described pole block 6 is less than the half of spacing between concave surface center to described pole block 6.
Preferably, described miniature circuit breaker tripgear, wherein, the length that described banking stop 13 extends above described movable type head 7 is at least greater than the half of described movable type head 7 length.
Preferably, described miniature circuit breaker tripgear, wherein, described carriage 10 comprises epimere, stage casing and bottom, and described carriage 10 epimere is in falling " eight " font jag shape, and described carriage 10 epimere is positioned at described hole clipping 9 both sides; Have level connection joint section between described carriage 10 stage casing and described carriage 10 epimere, described stage casing is used for forming buffering to described moveable arm 8; Described moveable arm 8 bottom is then supported in described bottom.
A kind of miniature circuit breaker tripgear beneficial effect that the utility model provides: 1) be arranged in parallel by movable plate and described sealed tube, be conducive to the manufacture of circuit breaker Miniaturization Design, greatly reduce overall dimension; 2) realize delay tripping and immediate trip by the design of sealed tube, delay tripping can give warning in advance and notify that personnel's checkout facility prevents major accident, and immediate trip can at moment turn-off current proterctive equipment; 3) come off from block side, pole when the use of stop prevents movable plate from changing position, avoid the fault occurring normally tripping; 4) use of torsion spring provides abundant restoring force to movable plate, makes movable plate return to original position smoothly, to ensure that trip(ping) bar is linked in hanging hole smoothly after tripgear tripping operation.
Accompanying drawing explanation
Fig. 1 is the miniature circuit breaker tripgear structural representation described in the utility model one embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
By reference to the accompanying drawings 1, the present embodiment provides a kind of miniature circuit breaker tripgear, comprises, sealed tube 4, and in tubular construction, described sealed tube 4 outer wall is wound with loading coil 5, and described sealed tube 4 upper end involution has pole block 6, is also embedded with banking stop 13 above the block of described pole; Movable plate, be arranged in parallel with described sealed tube 4, described movable plate is bending structure, described movable plate comprises horizontal movable type head 7 and the moveable arm 8 vertical with described movable type head 7, described movable type head 7 is positioned at block 6 side, described pole, and described movable type head 7 is positioned at below described banking stop 13 one end, is provided with hanging hole 9 in the middle part of described moveable arm 8, hangs trip(ping) bar in described hanging hole 9; Carriage 10, described carriage 10 upper end is close to described moveable arm 8 and is played a supportive role; Torsion spring 12, described torsion spring 12 comprises the first external part and the second external part; Wherein, described loading coil 5 accesses overcurrent, and described pole block 6 produces magnetic flux, and described movable plate overcomes that described torsion spring 12 twisting force is close to described pole block 6, and described trip(ping) bar is deviate from described hanging hole 9, and circuit disconnects; Described movable plate is replied under described torsion spring 12 twisting force.
Described tripgear also comprises a magnetic frame 1, and described magnetic frame 1 is in plate-like structure, and described magnetic frame 1 is provided with the first installing hole 2 and the second installing hole 3.
Described sealed tube 4 bottom is embedded in described first installing hole 2, and described moveable arm 8 bottom is embedded in described second installing hole 3.
Described magnetic frame 1 is also provided with torsion spring fixed frame for fixing torsion spring 12.The side of magnetic frame 1 possesses torsion spring fixed frame, torsion spring fixed frame central authorities possess torsion spring fixed axis, the axle week of described torsion spring fixed axis arranges torsion spring 12, one end of described torsion spring 12 is locked in the side towards moveable arm 8 in torsion spring fixed frame, and the other end of torsion spring 12 is supported in described magnetic frame inside upper surface.
Described sealed tube 4 is nonmagnetic substance, the built-in decelerate fluid of described sealed tube 4, magnetic plunger and disc spring, and described decelerate fluid riddles in described sealed tube 4, is connected between described magnetic plunger with described pole block 6 by helical spring.Described sealed tube 4 comprised the fluids such as the silicone oil of cushioning effect, the magnetic that can slide up and down plunger, downwards resiliency supported plunger elastomeric element, be sealed in the peristome above described sealed tube and support the pole block of elastomeric element upper end.During access overcurrent, coil internal e.m.f. makes plunger move towards pole block 6 direction.
Delay tripping and immediate trip is realized by the design of sealed tube 4, delay tripping is namely when flowing into medium overcurrent in described loading coil, due to the increase of magnetic flux, the power that described plunger produces exceedes helical spring and is applied to the resistance of plunger and the resistance of decelerate fluid, described plunger is made to start to move to described pole block, closed interval between described pole block and described plunger, described movable type head is by described pole block magnetic attraction, laterally move towards described pole block relative to described loading coil axis, described pole block and the adhesive of described movable type head, the pulling force that described movable plate overcomes described torsion spring moves to the second place, thus the trip(ping) bar hung on described movable plate hanging hole is deviate from described hanging hole, Disjoncteur trips, instantaneous tripping is namely when overcurrent serious in loading coil or short circuit, described pole block produces enough large magnetic force instantaneously, described movable type head can be inhaled to pole block, described pole block and the adhesive of described movable type head, the pulling force that described movable plate overcomes described torsion spring moves to the second place, described trip(ping) bar is deviate from described hanging hole, and Disjoncteur trips.
Described pole block 6 adopts notch cuttype cylindrical structure, and the basal diameter of described notch cuttype cylindrical structure reduces from bottom to top step by step.
Described banking stop 13 lower surface establishes groove, and described groove and described pole block 6 nose-circle cylinder match.
Described movable type head 7 is concave structure near block 6 one end, described pole, and described concave structure and described pole block 6 sidewall match, and the spacing between the outstanding outer of described concave surface and described pole block 6 is less than the half of spacing between concave surface center to described pole block 6.Described armature bottom forms the ladder of narrowed width, in described second installing hole of movable insertion.The concave structure design of described movable type head 7 near block 6 one end, described pole is in order to ensure wider head to increase the area of pole interblock generation magnetic, and order tripping operation completes fast.
The length that described banking stop 13 extends above described movable type head 7 is at least greater than the half of described movable type head 7 length.
Described carriage 10 comprises epimere, stage casing and bottom, and described carriage 10 epimere is in falling " eight " font jag shape, and described carriage 10 epimere is positioned at described hole clipping 9 both sides; Have level connection joint section between described carriage 10 stage casing and described carriage 10 epimere, described stage casing is used for forming buffering to described moveable arm 8; Described moveable arm 8 bottom is then supported in described bottom.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification and execution mode utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a miniature circuit breaker tripgear, is characterized in that, comprises,
Sealed tube (4), in tubular construction, described sealed tube (4) outer wall is wound with loading coil (5), and described sealed tube (4) upper end involution has pole block (6), is also embedded with banking stop (13) above the block of described pole;
Movable plate, be arranged in parallel with described sealed tube (4), described movable plate is bending structure, described movable plate comprises horizontal movable type head (7) and the moveable arm (8) vertical with described movable type head (7), described movable type head (7) is positioned at block (6) side, described pole, and described movable type head (7) is positioned at below described banking stop (13) one end, described moveable arm (8) middle part is provided with hanging hole (9), and described hanging hole hangs trip(ping) bar in (9);
Carriage (10), described carriage (10) upper end is close to described moveable arm (8) and is played a supportive role;
Torsion spring (12), described torsion spring (12) comprises the first external part and the second external part, described first external part hooking is in described moveable arm (8) side, and described second external part is hooked in described carriage (10) middle part;
Wherein, described loading coil (5) access overcurrent, described pole block (6) produces magnetic flux, it is close to described pole block (6) that described movable plate overcomes described torsion spring (12) twisting force, described trip(ping) bar is deviate from described hanging hole (9), and circuit disconnects; Described movable plate is replied under described torsion spring (12) twisting force.
2. miniature circuit breaker tripgear as claimed in claim 1, it is characterized in that, described tripgear also comprises a magnetic frame (1), described magnetic frame (1) is in plate-like structure, and described magnetic frame (1) is provided with the first installing hole (2) and the second installing hole (3).
3. miniature circuit breaker tripgear as claimed in claim 2, it is characterized in that, described sealed tube (4) bottom is embedded in described first installing hole (2), and described moveable arm (8) bottom is embedded in described second installing hole (3).
4. miniature circuit breaker tripgear as claimed in claim 2, is characterized in that, described magnetic frame (1) is also provided with torsion spring fixed frame (12) for fixing torsion spring (12).
5. miniature circuit breaker tripgear as claimed in claim 1, it is characterized in that, described sealed tube (4) is nonmagnetic substance, described sealed tube (4) built-in decelerate fluid, magnetic plunger and disc spring, described decelerate fluid riddles in described sealed tube (4), is connected between described magnetic plunger with described pole block (6) by helical spring.
6. miniature circuit breaker tripgear as claimed in claim 1, is characterized in that, described pole block (6) adopts notch cuttype cylindrical structure, and the basal diameter of described notch cuttype cylindrical structure reduces from bottom to top step by step.
7. miniature circuit breaker tripgear as claimed in claim 6, it is characterized in that, described banking stop (13) lower surface establishes groove, and described groove and described pole block (6) nose-circle cylinder match.
8. miniature circuit breaker tripgear as claimed in claim 6, it is characterized in that, described movable type head (7) is concave structure near block (6) one end, described pole, described concave structure and described pole block (6) sidewall match, and the spacing between the outstanding outer of described concave surface and described pole block (6) is less than the half of spacing between concave surface center to described pole block (6).
9. miniature circuit breaker tripgear as claimed in claim 1, is characterized in that, described banking stop (13) is at least greater than the half of described movable type head (7) length to the length that described movable type head (7) top extends.
10. miniature circuit breaker tripgear as claimed in claim 1, it is characterized in that, described carriage (10) comprises epimere, stage casing and bottom, described carriage (10) epimere is in falling " eight " font jag shape, and described carriage (10) epimere is positioned at described hanging hole (9) both sides; Have level connection joint section between described carriage (10) stage casing and described carriage (10) epimere, described stage casing is used for forming buffering to described moveable arm (8); Described moveable arm (8) bottom is then supported in described bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569497.4U CN204215985U (en) | 2014-09-29 | 2014-09-29 | A kind of miniature circuit breaker tripgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569497.4U CN204215985U (en) | 2014-09-29 | 2014-09-29 | A kind of miniature circuit breaker tripgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204215985U true CN204215985U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420569497.4U Withdrawn - After Issue CN204215985U (en) | 2014-09-29 | 2014-09-29 | A kind of miniature circuit breaker tripgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204215985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377093A (en) * | 2014-09-29 | 2015-02-25 | 江苏普华力拓电器股份有限公司 | Trip gear for miniature circuit breaker |
| CN109950104A (en) * | 2017-12-21 | 2019-06-28 | 施耐德电器工业公司 | Thermal-magnetic trip component and electrical switching unit |
-
2014
- 2014-09-29 CN CN201420569497.4U patent/CN204215985U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377093A (en) * | 2014-09-29 | 2015-02-25 | 江苏普华力拓电器股份有限公司 | Trip gear for miniature circuit breaker |
| CN109950104A (en) * | 2017-12-21 | 2019-06-28 | 施耐德电器工业公司 | Thermal-magnetic trip component and electrical switching unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150318 Effective date of abandoning: 20170503 |
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| AV01 | Patent right actively abandoned |