CN204155887U - The compact miniature circuit breaker in a kind of the two poles of the earth - Google Patents
The compact miniature circuit breaker in a kind of the two poles of the earth Download PDFInfo
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- CN204155887U CN204155887U CN201420599544.XU CN201420599544U CN204155887U CN 204155887 U CN204155887 U CN 204155887U CN 201420599544 U CN201420599544 U CN 201420599544U CN 204155887 U CN204155887 U CN 204155887U
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- iron core
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Abstract
The utility model discloses the compact miniature circuit breaker in a kind of the two poles of the earth, described circuit breaker comprises a housing, two protection poles are provided with in described housing, actuating contact mechanism is provided with between two protection poles, each protection pole comprises respectively: short current protective mechanism, and described short current protective mechanism and actuating contact mechanism are connected; Arc-extinguishing mechanism, described arc-extinguishing mechanism is positioned at bottom short current protective mechanism; Overcurrent protection mechanism, described overcurrent protection mechanism is positioned at bottom actuating contact mechanism, and described overcurrent protection mechanism and actuating contact mechanism are connected; Described case top is provided with one handle, and described handle is connected with actuating contact mechanism, and described housing bottom is provided with buckle.The utility model volume is little, and the two poles of the earth modulus thickness only has 18mm, takes up room little, material economy more than 40%, low cost of manufacture.
Description
Technical field
The utility model relates to a kind of circuit breaker of low-voltage electrical apparatus, is specifically related to a kind of compact miniature circuit breaker in the two poles of the earth for overcurrent protection and short-circuit protection.
Background technology
Circuit breaker is most popular terminal protection electrical equipment, and the circuit breaker the two poles of the earth modulus thickness circulated in the market is all 36mm, because the two poles of the earth modulus thickness is larger; overall volume is large; in the distribution box scope of application, the space can assembling change will be little, and the scope of application is limited.
Utility model content
The technical problem that the utility model exists to solve above-mentioned circuit breaker, thus the compact miniature circuit breaker in the two poles of the earth that a kind of volume is little, usage space is little, the two poles of the earth modulus thickness is little is provided.
For achieving the above object, the technical solution of the utility model is as follows:
The compact miniature circuit breaker in a kind of the two poles of the earth, described circuit breaker comprises a housing, is provided with two protection poles in described housing, and be provided with actuating contact mechanism between two protection poles, each protection pole comprises respectively:
Short current protective mechanism, described short current protective mechanism and actuating contact mechanism are connected;
Arc-extinguishing mechanism, described arc-extinguishing mechanism is positioned at bottom short current protective mechanism;
Overcurrent protection mechanism, described overcurrent protection mechanism is positioned at bottom actuating contact mechanism, and described overcurrent protection mechanism and actuating contact mechanism are connected;
Described case top is provided with one handle, and described handle is connected with actuating contact mechanism, and described housing bottom is provided with buckle.
In a preferred embodiment of the present utility model, described housing comprises the side plate of a boss-shaped and the coverboard of two boss-shapeds, and coverboard is placed in side plate both sides respectively, and the thickness of described side plate is 18mm, and described coverboard is provided with riveted holes.
In a preferred embodiment of the present utility model, described actuating contact mechanism comprises U-shaped connecting rod, back-moving spring, leading, little axle, extension spring, tripping, crank, alignment pin and right back-moving spring, described handle one end is connected with U-shaped connecting rod, the U-shaped connecting rod other end is connected with leading, described little axle is arranged on moving contact, the little axle of described leading pulling, described extension spring is connected with moving contact, described tripping is connected with moving contact, described crank and tripping link, and described alignment pin and right back-moving spring are arranged in tripping.
In a preferred embodiment of the present utility model, described short current protective mechanism comprises yoke, coil, axle sleeve, dynamic iron core, static iron core, iron core spring, push rod and lug plate, described lug plate overlaps binding clip, and tightened by terminal screw, described coil one end is welded on lug plate, the described coil other end is near yoke, axle sleeve is provided with in described coil, dynamic iron core is provided with in described axle sleeve, described yoke is welded with fixed contact, described static iron core is arranged in yoke, described push rod is fixed on dynamic iron core through static iron core, described push rod also contacts with leading.
In a preferred embodiment of the present utility model; described overcurrent protection mechanism comprises arc striking piece, bimetal leaf and enamelled wire; described bimetal leaf one end is welded as a whole with arc striking piece and enamelled wire respectively; the described bimetal leaf other end is provided with a breach, and described bimetal leaf is matched with crank by breach.
In a preferred embodiment of the present utility model, described arc-extinguishing mechanism is made up of arc quenching plate and arc control device.
In a preferred embodiment of the present utility model, the rated current of described circuit breaker is 40A, and the specified breaking capacity of described circuit breaker is 10KA.
By technique scheme, the beneficial effects of the utility model are:
The utility model volume is little, and the two poles of the earth modulus thickness only has 18mm, takes up room little, material economy more than 40%, low cost of manufacture.
The utility model has overcurrent protection and short-circuit protection, multiple functional; Operating mechanism flexibility and reliability, tripping force is moderate, and response of threading off is fast, and there are independently magnetic force protection and Thermal protection in every pole; Adopt short current protective mechanism and arc-extinguishing mechanism symmetric design, actuating contact mechanism dislocation design, reaches conserve space object.
The utility model current limitation effect is good, and there are independent arc control device and arc quenching plate in every pole, rational in infrastructure; Breaking capacity reaches 10KA, and rated operational current can reach 40A.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is schematic perspective view of the present utility model;
Fig. 2 is internal structure schematic diagram of the present utility model;
Fig. 3 is the structural representation of actuating contact mechanism;
Fig. 4 is the structural representation of short current protective mechanism;
Fig. 5 is the structural representation of overcurrent protection mechanism;
Fig. 6 is the structural representation of arc-extinguishing mechanism.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1 and Fig. 2, the compact miniature circuit breaker in a kind of the two poles of the earth that the utility model provides, it comprises a housing 100, and its entirety is a boss-shaped, it mainly comprises the side plate 110 of a boss-shaped and the coverboard 120 of two boss-shapeds, and coverboard 120 is placed in side plate 110 both sides respectively.
The thickness of side plate 110 is 18mm, and coverboard 120 is provided with riveted holes 121, is convenient to coverboard 120 like this and is fixedly connected with external component.
The left and right sides in housing 100 is also provided with connecting terminal components, and this assembly can hold 35 squares lead, meets current needs.
Housing 100 top is provided with handle 130, and handle 130 can be used for controlling actuating contact mechanism 200;
Buckle 140 is provided with bottom housing 100,
In housing 100, be provided with two protection poles, between two protection pole, be provided with actuating contact mechanism 200.
See Fig. 2 and Fig. 3; actuating contact mechanism 200; it is arranged between two protection poles; it is for ensureing electric current normal ON, and actuating contact mechanism 200 mainly comprises U-shaped connecting rod 210, back-moving spring 220, leading 230, little axle 240, extension spring 250, tripping 260, crank 270, alignment pin 280 and right back-moving spring 290.
U-shaped connecting rod 210 one end is connected with leading 230, and little axle 240 is arranged on the moving contact 300 of circuit breaker, and leading 230 hold little axle 240, and extension spring 250 is connected with moving contact 300, and tripping 260 is connected with moving contact 300, and described crank 270 links with tripping 260.
Handle 130 one end is connected with U-shaped connecting rod 210, and the other end is connected with leading 230.
When handle 130 moves to on-position (namely moving contact 300 closes with fixed contact 310), handle 130 rotates, U-shaped connecting rod 210 is driven to move, one end of U-shaped connecting rod 210 connects leading 230, the front end of leading 230 is pulled on the little axle 240 of moving contact 300, at this moment, moving contact 300 can to fixed contact 310 direction moving contact;
Touch fixed contact 310 bottom moving contact 300 after, now driving handle 130 travels forward again, this is, the contact of moving contact 300 and fixed contact 310 will increase, contact can make the extension spring 250 of moving contact 300 other end provide opposite force, handle 130 can move forward until closed, and at this moment the contact of moving contact 300 and fixed contact 310 can increase to prescribed limit, thus ensures electric current normal ON.
Tripping 260, it is connected with moving contact 300, and it is the little axle 240 for pinning on moving contact 300.
Crank 270 and tripping 260 link, and alignment pin 280 and right back-moving spring 290 are for spacing to crank 270.
In the utility model, each protection pole comprises independently short current protective mechanism 400, arc-extinguishing mechanism 500 and overcurrent protection mechanism 600 respectively, very safe and reliable.
See Fig. 2 and Fig. 4, short current protective mechanism 400 matches with actuating contact mechanism 200, and it comprises yoke 410, coil 420, axle sleeve 430, dynamic iron core 440, static iron core 450, iron core spring, push rod 470 and lug plate 480.
Lug plate 480 overlaps binding clip 490, and tighten fixing by terminal screw 491, coil 420 one end is welded on lug plate 480, the other end, near yoke 410, is provided with axle sleeve 430 in coil 420, be provided with dynamic iron core 440 in axle sleeve 430, yoke 410 is welded with fixed contact 310, static iron core 450 is arranged in yoke 410, and push rod 470 is fixed on dynamic iron core 440 through static iron core 450, and push rod 470 also can contact with leading 230.
The course of work of short current protective mechanism 400 is as follows:
When producing short trouble in current circuit, electric current increases rapidly, coil 420 will produce powerful magnetic field, pull dynamic iron core 440, iron core 440 is travelled forward, push rod 470 will promote leading 230, the stressed dropout of little axle 240 above in the of leading 230, making disequilibrium under stress, at this moment, moving contact 300 can fast separately (moving contact separately, reaches protection safety), and moving contact 300 can drive crank 270 to move, crank 270 drives tripping 260, and other pole that switch is stitched together disconnects simultaneously;
When U-shaped connecting rod 210 is by leading 230 drive interlock, fixed handle 130 can be with to move, and handle 130, under the assistance of torsion spring 131, can disconnect rapidly, reaches reset.
See Fig. 2 and Fig. 5, arc-extinguishing mechanism 500, is arranged on bottom short current protective mechanism 400, and it is made up of arc quenching plate 510 and arc control device 520.
In the utility model, fixed contact 310 and yoke 410 rivet together, and fixed contact 310 lower end is the arc angle of one 60 degree, and this arc angle extends to side above arc control device 520, can strengthen striking ability like this.
See Fig. 2 and Fig. 6; overcurrent protection mechanism 600 comprises arc striking piece 610, bimetal leaf 620 and enamelled wire 630; bimetal leaf 620 one end is welded as a whole with arc striking piece 610 and enamelled wire 630 respectively, and the other end is provided with a breach, bimetal leaf 620 by breach and crank 270 in mating connection.
Bottom overcurrent protection mechanism 600, be provided with adjustment screw 640, overcurrent protection mechanism 600 is also provided with flexible conductor 650.
The course of work of overcurrent protection mechanism 600 is as follows:
When electric current is after certain hour, bimetal leaf 620 will flexural deformation, and at this moment, bimetal leaf 620 can pull crank 270 to move, crank 270 can drive the tripping 260 of top to thread off, below can drive leading 230 to move upward simultaneously, and itself and little axle 240 are threaded off, and moving contact 300 can disconnect rapidly, switch is disconnected, U-shaped connecting rod 210 can continue band fixed handle 130 and move, and under the assistance of handle 130 torsion spring 131, handle 130 can Rapid reset.
In addition, the tripping 260 of actuating contact mechanism 200 is also provided with a circular hole, by an external diameter, to be 1mm axle can cut-off neutral pole with one to circular hole is connected, and so just can realize multipole interlock;
Two circuit breakers can be connected as one by handle 130, tripping 260, thus form multipole ultrathin minitype breaker.Multipole ultrathin minitype breaker can realize multipole simultaneous operation.When producing fault and disconnect in the ultrathin minitype breaker of at least one pole, multipole ultrathin minitype breaker can be realized by snap close interlock and synchronously disconnect, very convenient and practical.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. the compact miniature circuit breaker in the two poles of the earth, described circuit breaker comprises a housing, is provided with two protection poles, it is characterized in that in described housing, and be provided with actuating contact mechanism between two protection poles, each protection pole comprises respectively:
Short current protective mechanism, described short current protective mechanism and actuating contact mechanism are connected;
Arc-extinguishing mechanism, described arc-extinguishing mechanism is positioned at bottom short current protective mechanism;
Overcurrent protection mechanism, described overcurrent protection mechanism is positioned at bottom actuating contact mechanism, and described overcurrent protection mechanism and actuating contact mechanism are connected;
Described case top is provided with one handle, and described handle is connected with actuating contact mechanism, and described housing bottom is provided with buckle.
2. the compact miniature circuit breaker in a kind of the two poles of the earth according to claim 1, it is characterized in that, described housing comprises the side plate of a boss-shaped and the coverboard of two boss-shapeds, and coverboard is placed in side plate both sides respectively, the thickness of described side plate is 18mm, and described coverboard is provided with riveted holes.
3. the compact miniature circuit breaker in a kind of the two poles of the earth according to claim 1, it is characterized in that, described actuating contact mechanism comprises U-shaped connecting rod, back-moving spring, leading, little axle, extension spring, tripping, crank, alignment pin and right back-moving spring, described handle one end is connected with U-shaped connecting rod, the described U-shaped connecting rod other end is connected with leading, described little axle is arranged on moving contact, the little axle of described leading pulling, described extension spring is connected with moving contact, described tripping is connected with moving contact, described crank and tripping link, and described alignment pin and right back-moving spring are arranged in tripping.
4. the compact miniature circuit breaker in a kind of the two poles of the earth according to claim 3, it is characterized in that, described short current protective mechanism comprises yoke, coil, axle sleeve, dynamic iron core, static iron core, iron core spring, push rod and lug plate, described lug plate overlaps binding clip, and tightened by terminal screw, described coil one end is welded on lug plate, the described coil other end is near yoke, axle sleeve is provided with in described coil, dynamic iron core is provided with in described axle sleeve, described yoke is welded with fixed contact, described static iron core is arranged in yoke, described push rod is fixed on dynamic iron core through static iron core, described push rod also contacts with leading.
5. the compact miniature circuit breaker in a kind of the two poles of the earth according to claim 3; it is characterized in that; described overcurrent protection mechanism comprises arc striking piece, bimetal leaf and enamelled wire; described bimetal leaf one end is welded as a whole with arc striking piece and enamelled wire respectively; the described bimetal leaf other end is provided with a breach, and described bimetal leaf is matched with crank by breach.
6. the compact miniature circuit breaker in a kind of the two poles of the earth according to claim 1, it is characterized in that, described arc-extinguishing mechanism is made up of arc quenching plate and arc control device.
7. the compact miniature circuit breaker in a kind of the two poles of the earth according to claim 1, is characterized in that, the rated current of described circuit breaker is 40A, and the specified breaking capacity of described circuit breaker is 10KA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599544.XU CN204155887U (en) | 2014-10-16 | 2014-10-16 | The compact miniature circuit breaker in a kind of the two poles of the earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599544.XU CN204155887U (en) | 2014-10-16 | 2014-10-16 | The compact miniature circuit breaker in a kind of the two poles of the earth |
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| Publication Number | Publication Date |
|---|---|
| CN204155887U true CN204155887U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420599544.XU Active CN204155887U (en) | 2014-10-16 | 2014-10-16 | The compact miniature circuit breaker in a kind of the two poles of the earth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282510A (en) * | 2014-10-16 | 2015-01-14 | 上海安奕极企业发展有限公司 | Two-pole compact miniature circuit breaker |
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2014
- 2014-10-16 CN CN201420599544.XU patent/CN204155887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282510A (en) * | 2014-10-16 | 2015-01-14 | 上海安奕极企业发展有限公司 | Two-pole compact miniature circuit breaker |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |