CN205081084U - Good miniature circuit breaker of arc extinguishing performance - Google Patents
Good miniature circuit breaker of arc extinguishing performance Download PDFInfo
- Publication number
- CN205081084U CN205081084U CN201520906029.6U CN201520906029U CN205081084U CN 205081084 U CN205081084 U CN 205081084U CN 201520906029 U CN201520906029 U CN 201520906029U CN 205081084 U CN205081084 U CN 205081084U
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- Prior art keywords
- arc
- flash barrier
- control device
- circuit breaker
- cap
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Abstract
The utility model discloses a good miniature circuit breaker of arc extinguishing performance, include by cap and shell block to closing the casing that constitutes to and locate moving contact, static contact, yoke, explosion chamber and the run -on plate in the casing, it introduces to be equipped with the electric arc that does benefit to resulting from between moving contact and the static contact in the casing the magnetic blow -out device of explosion chamber, magnetic blow -out device first flash barrier and the second flash barrier made by product gas material on locating cap and shell block respectively to reach and locate a magnetic conductive plate and the 2nd magnetic conductive plate between first flash barrier and the cap and between second flash barrier and the shell block respectively, correspond the position on first flash barrier and the second flash barrier and be equipped with and be suitable for pilot arc to get into the striking slope of explosion chamber from explosion chamber front end middle part recess, be equipped with two at least gas vents at the rear of explosion chamber on the casing. The utility model discloses cutout ware rational in infrastructure can be quick effectual with the arc extinction, improves breaking capacity to ensure the operation of circuit safe and reliable.
Description
Technical field
The utility model belongs to miniature circuit breaker field of structural design, is specifically related to the miniature circuit breaker that a kind of arc extinction performance is good.
Background technology
When in electrical network during a certain section of line failure, just need the circuitry cuts relying on circuit breaker to break down.When circuit breaker disjunction, can produce electric arc between circuit breaker dynamic/static contact, electric arc brings a large amount of heats, if electric arc overstand probably scaling loss circuit breaker between dynamic/static contact, therefore needs to be introduced in arc control device by electric arc as soon as possible to be extinguished.In existing miniature circuit breaker, its arc quenching system comprises arc control device, and between arc control device and dynamic/static contact, arrange the striking of striking runway, although have certain effect, arc quenching effect is unsatisfactory.
Utility model content
To this, the utility model aims to provide a kind of miniature circuit breaker with remarkable arc extinction performance.
The technical scheme realizing the utility model object is:
The miniature circuit breaker that arc extinction performance is good, comprises by cap and the involutory housing formed of shell block, and is located at moving contact, fixed contact, yoke, arc control device and the run-on tab in described housing; The magnetic blow-out device being beneficial to and the electric arc resulted between described moving contact and described fixed contact being introduced described arc control device is provided with in described housing, described magnetic blow-out device comprises is located at the first flash barrier be made up of gas exhausted material on described cap and described shell block and the second flash barrier respectively, and the first magnetic conduction sheet be located at respectively between described first flash barrier and described cap and between described second flash barrier and described shell block and the second magnetic conduction sheet; On described first flash barrier and described second flash barrier, correspondence position is provided with and is suitable for pilot arc enters arc control device striking slope from arc control device front center recess, and described housing is provided with at least two exhaust outlets at the rear of described arc control device.
In technique scheme, the segmental arc of described run-on tab forms reinforcement.
In technique scheme, shallow slot through before and after the lateral surface of described housing forms.
The utility model has positive effect: in (1) the utility model, by arranging magnetic blow-out device in housing, the magnetic field resulted between the first magnetic conduction sheet and the second magnetic conduction sheet can drive electric arc to enter as early as possible in arc control device, further striking slope is set on the first flash barrier be made up of gas exhausted material and the second flash barrier, such setting, one adds the contact area of the first flash barrier and the second flash barrier and electric arc thus electric arc can be driven to enter arc control device fast by the air-flow that the gas that Effect of Hyperthermic Environment produces is formed, two carry out striking slope pilot arc enters arc control device inside by arc control device front center recess and avoids electric arc to burn at arc control device front end two bulge, thus be more conducive to arc extinction, in addition, by arranging at least two exhaust outlets, in time the gas through arc control device can be discharged housing, thus accelerate the transfer velocity of enclosure interior electric arc, therefore, the miniature circuit breaker arc extinction performance in the utility model is remarkable, effectively can improve the breaking capacity of miniature circuit breaker.(2), in the utility model, by arranging the through shallow slot in front and back on the lateral surface of described housing, when this miniature circuit breakers some are assembled into multipole circuit breaker, between circuit breakers, forming passage at shallow slot place, being conducive to heat radiation.
Accompanying drawing explanation
Fig. 1 is the positive direction view of the middle-size and small-size circuit breaker of the utility model;
Fig. 2 is the structural representation of the middle-size and small-size circuit breaker of the utility model (removing section components);
Fig. 3 is the structural representation of the first flash barrier/the second flash barrier described in miniature circuit breaker of the present utility model.
Reference numeral shown in figure is: 1-shell block; 2-moving contact; 3-fixed contact; 31-striking pin; 4-yoke; 5-run-on tab; 51-reinforcement; 6-second flash barrier; 7-second magnetic conduction sheet; 8-striking slope; 9-exhaust outlet; 10-shallow slot.
Embodiment
Do to illustrate below in conjunction with the concrete structure of Figure of description to the middle-size and small-size circuit breaker of the utility model:
A kind of miniature circuit breaker, as shown in Figures 2 and 3, it comprises by cap and the involutory housing formed of shell block 1, and is located at moving contact 2, fixed contact 3, yoke 4, arc control device (not shown) and the run-on tab 5 in described housing; The magnetic blow-out device being beneficial to and the electric arc resulted between described moving contact 2 and described fixed contact 3 being introduced described arc control device is provided with in described housing, described magnetic blow-out device comprises is located at the first flash barrier be made up of gas exhausted material (as aerogenesis insulating material such as nylon66 fiber, polyformaldehyde or melamines) on described cap and described shell block 1 and the second flash barrier 6 respectively, and the first magnetic conduction sheet be located at respectively between described first flash barrier and described cap and between described second flash barrier 6 and described shell block 1 and the second magnetic conduction sheet 7; On described first flash barrier and described second flash barrier 6, correspondence position is provided with and is suitable for pilot arc enters arc control device striking slope 8 from arc control device front center recess, and described housing is provided with at least two exhaust outlets 9 at the rear of described arc control device.In the present embodiment, by arranging magnetic blow-out device in housing, the magnetic field resulted between the first magnetic conduction sheet and the second magnetic conduction sheet 7 can drive electric arc to enter as early as possible in arc control device, further striking slope 8 is set on the first flash barrier be made up of gas exhausted material and the second flash barrier 6, such setting, one adds the contact area of the first flash barrier and the second flash barrier 6 and electric arc thus electric arc can be driven to enter arc control device fast by the air-flow that the gas that Effect of Hyperthermic Environment produces is formed, two carry out striking slope 8 pilot arc enters arc control device inside by arc control device front center recess and avoids electric arc to burn at arc control device front end two bulge, thus be more conducive to arc extinction, in addition, by arranging at least two exhaust outlets 9, in time the gas through arc control device can be discharged housing, thus accelerate the transfer velocity of enclosure interior electric arc, therefore, the miniature circuit breaker arc extinction performance in the utility model is remarkable, effectively can improve the breaking capacity of miniature circuit breaker.
In the present embodiment, in described yoke 4, punch forming has the striking portion had angle with it, described striking portion extends towards fixed contact 3 direction, further, the end of described fixed contact 3 is bent to form striking pin 31 towards described arc control device direction, the existence of striking portion and striking pin can play certain striking effect, thus can improve arc quenching effect.
In the present embodiment, run-on tab 5 intensity can be strengthened by forming reinforcement 51 at the segmental arc of described run-on tab 5, thus avoid run-on tab 5 flexural deformation.
Further again, shallow slot 11 through before and after the lateral surface of described housing forms, referring to Fig. 1, by adopting said structure, when this miniature circuit breakers some are assembled into multipole circuit breaker, form passage at shallow slot 11 place between circuit breakers, thus be beneficial to heat radiation.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to connotation of the present utility model the apparent change of extending out or variation still belong to protection range of the present utility model.
Claims (3)
1. the miniature circuit breaker that an arc extinction performance is good, comprise by cap and the involutory housing formed of shell block (1), and be located at moving contact (2), fixed contact (3), yoke (4), arc control device and the run-on tab (5) in described housing; It is characterized in that: in described housing, be provided with the magnetic blow-out device being beneficial to and the electric arc resulted between described moving contact (2) and described fixed contact (3) being introduced described arc control device, described magnetic blow-out device comprises is located at the first flash barrier be made up of gas exhausted material on described cap and described shell block (1) and the second flash barrier (6) respectively, and the first magnetic conduction sheet be located at respectively between described first flash barrier and described cap and between described second flash barrier (6) and described shell block (1) and the second magnetic conduction sheet (7); Described first flash barrier and the upper correspondence position of described second flash barrier (6) are provided with and are suitable for pilot arc enters arc control device striking slope (8) from arc control device front center recess, and described housing is provided with at least two exhaust outlets (9) at the rear of described arc control device.
2. the miniature circuit breaker that arc extinction performance according to claim 1 is good, is characterized in that, the segmental arc of described run-on tab (5) forms reinforcement (51).
3. the miniature circuit breaker that arc extinction performance according to claim 1 is good, is characterized in that: shallow slot (11) through before and after the lateral surface of described housing forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906029.6U CN205081084U (en) | 2015-11-13 | 2015-11-13 | Good miniature circuit breaker of arc extinguishing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906029.6U CN205081084U (en) | 2015-11-13 | 2015-11-13 | Good miniature circuit breaker of arc extinguishing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205081084U true CN205081084U (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520906029.6U Expired - Fee Related CN205081084U (en) | 2015-11-13 | 2015-11-13 | Good miniature circuit breaker of arc extinguishing performance |
Country Status (1)
| Country | Link |
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| CN (1) | CN205081084U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653431A (en) * | 2017-03-13 | 2017-05-10 | 新驰电气有限公司 | Arc extinguishing system of residual current operated circuit breaker |
| CN107146723A (en) * | 2017-07-13 | 2017-09-08 | 安德利集团有限公司 | A kind of magnetic blow-out system, arc-control device, single-pole circuit breaker and multipole circuit breaker |
| CN108269721A (en) * | 2016-12-30 | 2018-07-10 | 嘉灵科技有限公司 | Base bleed breaker |
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
-
2015
- 2015-11-13 CN CN201520906029.6U patent/CN205081084U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269721A (en) * | 2016-12-30 | 2018-07-10 | 嘉灵科技有限公司 | Base bleed breaker |
| CN108269721B (en) * | 2016-12-30 | 2019-05-31 | 嘉灵科技有限公司 | Base bleed breaker |
| CN106653431A (en) * | 2017-03-13 | 2017-05-10 | 新驰电气有限公司 | Arc extinguishing system of residual current operated circuit breaker |
| CN107146723A (en) * | 2017-07-13 | 2017-09-08 | 安德利集团有限公司 | A kind of magnetic blow-out system, arc-control device, single-pole circuit breaker and multipole circuit breaker |
| CN109192632A (en) * | 2018-11-06 | 2019-01-11 | 江苏凯隆电器有限公司 | A kind of small-sized DC breaker arc extinguishing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20171113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |