CN202084493U - Electromagnetic instantaneous trip adjusting device of low-voltage circuit breaker - Google Patents
Electromagnetic instantaneous trip adjusting device of low-voltage circuit breaker Download PDFInfo
- Publication number
- CN202084493U CN202084493U CN2011201502581U CN201120150258U CN202084493U CN 202084493 U CN202084493 U CN 202084493U CN 2011201502581 U CN2011201502581 U CN 2011201502581U CN 201120150258 U CN201120150258 U CN 201120150258U CN 202084493 U CN202084493 U CN 202084493U
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- China
- Prior art keywords
- core support
- iron core
- movable core
- circuit breaker
- adjusting device
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Abstract
The utility model discloses an electromagnetic instantaneous trip adjusting device of a low-voltage circuit breaker, which comprises a movable iron core, a movable iron core support, a fixed iron core, a fixed iron core support, a dowel, a bimetallic strip, a load side joint plate, an instantaneous spring and an adjusting screw. The fixed iron core, the bimetallic strip and the load side joint plate are fixedly riveted to the lower end of the fixed iron core support, the movable iron core is riveted to the lower end of the movable iron core support, the movable iron core support is fixed onto the fixed iron core support through the dowel, the instantaneous spring is mounted on the dowel, the adjusting screw is mounted on the fixed iron core support, and the top end of the adjusting screw contacts with a bending surface of the movable iron core support. The electromagnetic instantaneous trip adjusting device is simpler in adjustment due to the fact that the adjusting screw pushes the bending surface of the movable iron core support to control an air gap between the fixed iron core and the movable iron core, is more reliable and more accurate in use, and overcomes the limit of positioning of the adjusting screw and improves adjustability of characteristics of products simultaneously.
Description
Technical field
The utility model relates to the external accessory of the mold cased circuit breaker in the low-voltage electrical apparatus field, relates in particular to the adjusting device that is used for the mold cased circuit breaker instantaneous trip.
Background technology
Circuit breaker is one of protection important in the low voltage electric network and control element, and its main task is the electric current of connecting under carrying and the separating brake normal circuit condition, protects electric equipment not to be damaged when short circuit.Therefore, circuit breaker also needs to finish reliable closed and disconnected operation except needing high short circuit breaking capacity and perfect protective feature.The mechanism that is widely used in instantaneous short-circuit protection at present is a size of controlling magnetic dropout critical value by the spring force of regulating instantaneous spring, troublesome poeration not only, and easily produce problem such as poor stability along with factors such as elastic force fatigues.
The utility model content
At the drawback that existing mold cased circuit breaker short-circuit protection regulative mode exists, it is a kind of simple in structure that the utility model provides, and the electromagnetism instantaneous trip adjusting device of the low-voltage circuit breaker that precision is high guarantees the reliable disjunction of breaker of plastic casing, guarantees safe action.
The technical solution of the utility model is as follows:
A kind of electromagnetism instantaneous trip adjusting device of low-voltage circuit breaker comprises movable core, movable core support, secured core, secured core support, pivot pin, bimetal leaf, load-side fishplate bar, instantaneous spring and adjusts screw; Described secured core, bimetal leaf and load-side fishplate bar riveted are fixed in secured core support lower end; Described movable core riveted is in movable core support lower end, and the movable core support is fixed on the secured core support by pivot pin; Instantaneous spring is installed on the described pivot pin; The adjustment screw is installed on the secured core support, and described adjustment screw top contacts with the folding surface of movable core support.
Its further technical scheme is: described movable core support can rotate around pivot pin.
And its further technical scheme is: the front portion of described movable core support upper end is provided with projection.
Useful technique effect of the present utility model is:
The utility model is installed on the secured core support and is adjusted screw, adjusting the screw end contacts with the folding surface of movable core support, control air gap between the sound iron core by the folding surface of adjusting screw promotion movable core support, adjust more convenient, more accurate, the size control of magnetic dropout critical value is more accurate, solve the limitation of adjusting the screw location simultaneously, increased the adjustable of product performance.The utility model is not only simple in structure, and more convenient reliable than the existing method of regulating instantaneous spring force of utilizing.
Description of drawings
Fig. 1 is a stereogram of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is a left view of the present utility model.
Fig. 4 is a vertical view of the present utility model.
Fig. 5 is the structure chart of movable core support in the utility model.
Fig. 6 is the structure chart of secured core support in the utility model.
Description of reference numerals: 1. movable core; 2. movable core support; 3. secured core; 4. secured core support; 5. rotating shaft; 6. bimetal leaf; 7. load-side fishplate bar; 8. instantaneous spring; 9. adjustment screw; 10. folding surface; 11. projection; 12 ~ 16. holes.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
As Fig. 1 ~ shown in Figure 6, the utility model is by movable core 1, movable core support 2, secured core 3, secured core support 4, pivot pin 5, bimetal leaf 6, load-side fishplate bar 7, instantaneous spring 8 and adjust screw 9 and form.Secured core 3, bimetal leaf 6 and load-side fishplate bar 7 are fixed in secured core support 4 lower ends by hole 14 riveteds.In movable core support 2 lower ends, movable core support 2 utilizes pivot pin 5 to be fixed on the secured core support 4 by hole 13 and hole 15 to movable core 1 by hole 12 riveteds, and movable core support 2 can rotate freely within the specific limits around pivot pin 5.Movable core 1, secured core 3 and load-side fishplate bar 7 form magnetic circuits at this moment.Instantaneous spring 8(is installed on the pivot pin 5 sees Fig. 3), the spring force of instantaneous spring 8 separates movable core 1 and secured core 3 under the normality.Be equipped with in secured core support 4 upper end holes 16 and adjust screw 9, and fastening by nut, adjust screw 9 tops and contact with the folding surface 10 of movable core support 2, can play the effect of adjusting distance between movable core 1 and the secured core 3.
In actual the use, the utility model is installed on the load-side of circuit breaker base, and the projection 11 of movable core support 2 upper-end front is near the escape plate of circuit breaker.When electric current passes through load-side fishplate bar 7, electric current reaches certain intensity, surpass current critical value, movable core 1 just promptly moves to the rotation of secured core 3 directions around pivot pin 5 against, just can promote the escape plate by the projection 11 of movable core support 2 ends, impel the breaker mechanism action, reach the effect of contact disjunction.As current vanishes, movable core support 2 still resets to resting position under the reaction force of instantaneous spring force.Be equipped with on the secured core support 4 and adjust screw 9, its top contacts with movable core support 2, can play and adjust movable core 2 and secured core 3 air gap between the two, to change the effect of magnetic critical value.The utility model is by adjusting the folding surface 10 that screw 9 promotes movable core support 2, the adjustment of controlling air gap between the sound iron core is simpler, use more reliably accurately to have solved the limitation of adjusting the screw location simultaneously, increased the adjustable of product performance.
Above-described only is preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from spirit of the present utility model and design, all should think to be included within the protection range of the present utility model.
Claims (3)
1. the electromagnetism instantaneous trip adjusting device of a low-voltage circuit breaker is characterized in that: comprise movable core (1), movable core support (2), secured core (3), secured core support (4), pivot pin (5), bimetal leaf (6), load-side fishplate bar (7), instantaneous spring (8) and adjust screw (9); Described secured core (3), bimetal leaf (6) and load-side fishplate bar (7) riveted are fixed in secured core support (4) lower end; Described movable core (1) riveted is in movable core support (2) lower end, and movable core support (2) is fixed on the secured core support (4) by pivot pin (5); Instantaneous spring (8) is installed on the described pivot pin (5); Be equipped with on the secured core support (4) and adjust screw (9), described adjustment screw (9) top contacts with the folding surface (10) of movable core support (2).
2. according to the electromagnetism instantaneous trip adjusting device of the described low-voltage circuit breaker of claim 1, it is characterized in that: described movable core support (2) can rotate around pivot pin (5).
3. according to the electromagnetism instantaneous trip adjusting device of the described low-voltage circuit breaker of claim 1, it is characterized in that: the front portion of described movable core support (2) upper end is provided with projection (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201502581U CN202084493U (en) | 2011-05-12 | 2011-05-12 | Electromagnetic instantaneous trip adjusting device of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201502581U CN202084493U (en) | 2011-05-12 | 2011-05-12 | Electromagnetic instantaneous trip adjusting device of low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084493U true CN202084493U (en) | 2011-12-21 |
Family
ID=45345115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201502581U Expired - Fee Related CN202084493U (en) | 2011-05-12 | 2011-05-12 | Electromagnetic instantaneous trip adjusting device of low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202084493U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050341A (en) * | 2012-12-20 | 2013-04-17 | 浙江天正电气股份有限公司 | Universal case for molded case circuit breaker, molded case circuit breaker and residual current circuit breaker |
| CN111769013A (en) * | 2020-06-06 | 2020-10-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Large-range adjustable short circuit electromagnetic tripping device for plastic shell |
-
2011
- 2011-05-12 CN CN2011201502581U patent/CN202084493U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050341A (en) * | 2012-12-20 | 2013-04-17 | 浙江天正电气股份有限公司 | Universal case for molded case circuit breaker, molded case circuit breaker and residual current circuit breaker |
| CN103050341B (en) * | 2012-12-20 | 2015-12-02 | 浙江天正电气股份有限公司 | Universal plastic-casing Shell of circuit breaker, breaker of plastic casing and residual current circuit breaker |
| CN111769013A (en) * | 2020-06-06 | 2020-10-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Large-range adjustable short circuit electromagnetic tripping device for plastic shell |
| CN111769013B (en) * | 2020-06-06 | 2022-04-19 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Large-range adjustable short circuit electromagnetic tripping device for plastic shell |
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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: 20111221 Termination date: 20170512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |