CN201773794U - Multipolar plastic casing type circuit breaker with interpolar fixing device - Google Patents
Multipolar plastic casing type circuit breaker with interpolar fixing device Download PDFInfo
- Publication number
- CN201773794U CN201773794U CN 201020278005 CN201020278005U CN201773794U CN 201773794 U CN201773794 U CN 201773794U CN 201020278005 CN201020278005 CN 201020278005 CN 201020278005 U CN201020278005 U CN 201020278005U CN 201773794 U CN201773794 U CN 201773794U
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- China
- Prior art keywords
- interpolar
- circuit breaker
- fixture
- pole
- multipole
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- Expired - Lifetime
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Abstract
The utility model discloses a multipolar plastic casing type circuit breaker with an interpolar fixing device, which comprises a plurality of single-pole modules fixed via the interpolar fixing device. The interpolar fixing device includes a fixing shaft, an insulating casing pipe and a fixing part, the insulating casing pipe penetrates through all single-pole modules, and the end of the fixing shaft is fixed by the fixing part after the fixing shaft penetrates through the insulating casing pipe. The multipolar plastic casing type circuit breaker reinforces firmness of the single-pole modules and reduces repulsive force born by a plastic casing by the aid of the interpolar fixing device, and reduces production cost.
Description
Technical field
The utility model relates to the low-voltage circuit breaker field, relates in particular to the mold cased circuit breaker field, is a kind of mold cased circuit breaker that has the multipole modular construction of interpolar fixture.
Background technology
At contact system is in the mold cased circuit breaker of multipole modular construction, and the interpolar fixed form that adopts all is only by mounting screw each one pole module to be fixed on the shell of mold cased circuit breaker usually.In common utilization, the sense of current that each utmost point flows through in the circuit all is in the same way, so the electric power that interpolar produces is suction, to the not influence of shell of mold cased circuit breaker.But when the sense of current that flows through of its interpolar was incorgruous in the circuit of utilization, the electric power that interpolar produces then was a repulsion.This can often run in the utilization of DC circuit.When flowing through big short circuit current in the circuit, under the influence of interpolar repulsion, will produce very big damaging impact effect to shell, may make shell hold impact that can't stand repulsion and break.In the prior art, mold cased circuit breaker can only be strengthened the method for outer cover intensities by selecting high strength shell material or increase outer casing thickness etc. for use, the electrodynamic repulsion force that solves the heterodrome generation produces this problem of damaging impact effect to shell, has improved production cost like this.
The utility model content
The purpose of this utility model is to provide a kind of multipole mold cased circuit breaker that has the interpolar fixture, solved the method that can only strengthen outer cover intensities in the prior art by the selection of material or increase thickness etc. by the interpolar fixture, the electrodynamic repulsion force that solves the heterodrome generation produces this technical problem of damaging impact effect to shell.
The utility model is solved by the following technical solutions:
A kind of multipole mold cased circuit breaker that has the interpolar fixture of the present utility model, comprise a plurality of one pole modules, described a plurality of one pole module is fixed by the interpolar fixture, this interpolar fixture comprises that a fixed axis, thoroughly does away with edge sleeve pipe and fixture, described insulating sleeve runs through all one pole modules, after described fixed axis passed from insulating sleeve, the end was fixed by described fixture.
Be equipped with the through hole that passes for described insulating sleeve on each one pole module of the utility model, the two ends of through hole are provided with the location counterbore.
Also be provided with stop sleeve between adjacent two the one pole modules of the utility model, described stop sleeve is enclosed within the outside of insulating sleeve, and insert in the location counterbore of adjacent two one pole modules at the two ends of stop sleeve.
Interpolar fixture described in the utility model is used in two covers in the multipole mold cased circuit breaker.
Fixture described in the utility model is a nut, and this nut cooperates with the end thread of described fixed axis.
By above technical scheme, a kind of multipole mold cased circuit breaker that has the interpolar fixture of the present utility model, by the interpolar fixture, can reduce the actual electrodynamic impact that affords on the shell effectively, therefore can reduce requirement greatly to sheathing material intensity, can avoid adopting by selecting uneconomic reinforcement outer cover intensity methods such as high strength shell material or increase outer casing thickness, therefore can reduce the production cost greatly.
Description of drawings
Fig. 1 is the perspective view that the utility model has the multipole mold cased circuit breaker of interpolar fixture.
Fig. 2 is the part blast perspective view of Fig. 1.
Among the figure, 1, the one pole module; 2, fixed axis; 3, insulating sleeve; 4, nut; 5, stop sleeve; 21, the location counterbore; 22, through hole; 23, the end of thread; 24, the outerplanar of one pole module.
Embodiment
As shown in Figures 1 and 2, the utility model has the multipole mold cased circuit breaker of interpolar fixture, comprise a plurality of one pole modules 1, all one pole modules 1 are fixed by the interpolar fixture, this interpolar fixture comprises fixed axis 2, insulating sleeve 3 stop sleeve 5 and fixtures, insulating sleeve 3 runs through all one pole modules, and after fixed axis 2 passed from insulating sleeve 3, the end was fixed by described fixture.One pole module 1 the mold cased circuit breaker housing in, constitute by dynamic/static contact system, arc quenching system, rotating shaft system, mounting box, rivet.Be equipped with the through hole that passes for insulating sleeve 3 on each one pole module 1, the two ends of through hole are provided with location counterbore 21.And also be provided with stop sleeve 5 between adjacent two one pole modules, and stop sleeve 5 is enclosed within the outside of insulating sleeve 3, and insert in the location counterbore 21 of adjacent two one pole modules at the two ends of stop sleeve 5.
This interpolar fixture is two covers, and a plurality of one pole modules 1 string simultaneously, is fixed die opening and relative position between the one pole module 1 by stop sleeve 5; Suit insulating sleeve 3 on fixed axis 2 is used for strengthening the creepage distance between each utmost point, makes every adjacent one pole intermodule that insulating sleeve all be arranged; The end of fixed axis is the end of thread 23, and is fixing by nut 4 at last, and a plurality of one pole modules 1 closely are fixed together.
At first two fixed axis 2 that have an insulating sleeve 3 are passed two through holes 22 on the outer surface 24 of one pole module 1 in the multipole mold cased circuit breaker, on the insulating sleeve 3 that passes, put on stop sleeve 5 then, the two ends of stop sleeve are inserted in the through hole 22 on the outer surface 24 of one pole module 1 in the location counterbore 21 on the concentric position, pass two through holes 22 on second one pole module 1 again, put on stop sleeve 5 again ... till the number of required one pole module 1 meets the requirements, at last screw in a nut 4 separately at the two ends of fixed axis 2, and they are screwed, make nut 4 and fixed axis 2 not exceed the outer surface of one pole module 1, thereby a plurality of one pole modules in the mold cased circuit breaker closely are fixed together.
Operation principle of the present utility model is:
When if the electrode current direction in the circuit is incorgruous, then produce electrodynamic repulsion force at interpolar.Under the influence of interpolar electrodynamic repulsion force, will make each one pole module 1 that disengaging movement outwards takes place, but effect owing to two hold-down nuts 4 on the every fixed axis 2, the effect that makes the hold-down nut 4 and the combination of fixed axis 2 bear electrodynamic repulsion force has limited the disengaging movement of one pole module 1.
When flowing through especially big short circuit current in the circuit, then produce great electrodynamic repulsion force in interpolar moment, the most percussions that make the hold-down nut 4 and the combination of fixed axis 2 at first bear electrodynamic repulsion force, limit the outside displacement of one pole module 1, born the fraction percussion of electrodynamic repulsion force and then by the shell of mold cased circuit breaker.
When the shell that multipole mold cased circuit breaker of the present utility model can improve mold cased circuit breaker effectively flows through especially big short circuit current in circuit, the interpolar electrodynamic repulsion force that produces is to the tensile strength that shell impacts, and fracture phenomena does not take place down in the impact that can make the shell of mold cased circuit breaker bear great interpolar electrodynamic repulsion force.
Claims (5)
1. multipole mold cased circuit breaker that has the interpolar fixture, comprise a plurality of one pole modules, it is characterized in that, described a plurality of one pole module is fixed by the interpolar fixture, this interpolar fixture comprises that a fixed axis, thoroughly does away with edge sleeve pipe and fixture, described insulating sleeve runs through all one pole modules, and after described fixed axis passed from insulating sleeve, the end was fixed by described fixture.
2. multipole mold cased circuit breaker according to claim 1 is characterized in that, is equipped with the through hole that passes for described insulating sleeve on each one pole module, and the two ends of through hole are provided with the location counterbore.
3. multipole mold cased circuit breaker according to claim 2, it is characterized in that, also be provided with stop sleeve between adjacent two one pole modules, described stop sleeve is enclosed within the outside of insulating sleeve, and insert in the location counterbore of adjacent two one pole modules at the two ends of stop sleeve.
4. multipole mold cased circuit breaker according to claim 1 is characterized in that, described interpolar fixture has two covers.
5. multipole mold cased circuit breaker according to claim 1 is characterized in that, described fixture is a nut, cooperates with the end thread of described fixed axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020278005 CN201773794U (en) | 2010-07-30 | 2010-07-30 | Multipolar plastic casing type circuit breaker with interpolar fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020278005 CN201773794U (en) | 2010-07-30 | 2010-07-30 | Multipolar plastic casing type circuit breaker with interpolar fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773794U true CN201773794U (en) | 2011-03-23 |
Family
ID=43753638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020278005 Expired - Lifetime CN201773794U (en) | 2010-07-30 | 2010-07-30 | Multipolar plastic casing type circuit breaker with interpolar fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773794U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035452A (en) * | 2011-09-30 | 2013-04-10 | Ls产电株式会社 | Circuit breaker and method for manufacturing the insulating layer thereof |
| CN103137350A (en) * | 2011-12-01 | 2013-06-05 | 西门子公司 | Multi-pole electrical switch |
-
2010
- 2010-07-30 CN CN 201020278005 patent/CN201773794U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035452A (en) * | 2011-09-30 | 2013-04-10 | Ls产电株式会社 | Circuit breaker and method for manufacturing the insulating layer thereof |
| CN103035452B (en) * | 2011-09-30 | 2016-01-13 | Ls产电株式会社 | The method of circuit breaker and the insulating barrier for the manufacture of circuit breaker |
| CN103137350A (en) * | 2011-12-01 | 2013-06-05 | 西门子公司 | Multi-pole electrical switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |