CN203607352U - Multi-break circuit breaker with current-limiting protection mechanism - Google Patents
Multi-break circuit breaker with current-limiting protection mechanism Download PDFInfo
- Publication number
- CN203607352U CN203607352U CN201320800475.XU CN201320800475U CN203607352U CN 203607352 U CN203607352 U CN 203607352U CN 201320800475 U CN201320800475 U CN 201320800475U CN 203607352 U CN203607352 U CN 203607352U
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- Prior art keywords
- circuit breaker
- current
- contact
- fixed contact
- protection mechanism
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Abstract
The utility model discloses a multi-break circuit breaker with a current-limiting protection mechanism. The multi-break circuit breaker comprises two adjacent static contacts which are arranged in an insulating shell, and two moving contacts which are corresponding to the static contacts. The static contacts are rotatably installed in contact bases which are provided with springs used for supporting the static contacts. The two static contacts are electrically connected via one flexible conductive wire. The static contacts are rotatably installed in the contact bases, the static contacts can be separated via repulsion under electric repulsion force, and the two static contacts are connected via the flexible conductive wire without mutual interference so that breaking speed of the circuit breaker can be enhanced, and reliability of motion of the multi-break circuit breaker can be ensured when high fault current appears.
Description
Technical field
The utility model relates to a kind of circuit breaker, particularly relates to a kind of multibreak circuit breaker with series connection breakpoint.
Background technology
Multibreak circuit breaker adopts the mode of breakpoint series connection to improve the interrupting performance of circuit breaker, can will between two adjacent moving contacts, connect with conductor, or will between two adjacent fixed contacts, connect with conductor, or a moving contact is connected with conductor with a fixed contact in adjacent breakpoint, thereby realize this breakpoint series connection.
Current-limiting protection mechanism, in the time there is very large fault current, scolds out fast dynamic and static contact under the effect of electrodynamic repulsion force, reaches the object of protective circuit.
Chinese invention patent application CN102592903A discloses a kind of multibreak circuit breaker, and it comprises pedestal, moving contact, arc control device, has two groups of fixed contacts on the twin fixed contact at least one is placed in pedestal; These two groups of fixed contacts respectively two group moving contacts contrary with current direction are corresponding; One group of corresponding arc control device of fixed contact.Described twin fixed contact is two fixed contacts that one is connected that formed by same conductor.
But when the twin static contact structure of this integral type is applied to the circuit breaker with current-limiting protection mechanism, fixed contact cannot be scolded out in the situation that being subject to electrodynamic repulsion force, thereby affect the breaking speed of circuit breaker.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of multibreak circuit breaker with current-limiting protection mechanism, and fixed contact can be scolded out in the time being subject to electrodynamic repulsion force, thereby improves the breaking speed of circuit breaker.
In order to solve the problems of the technologies described above; the utility model adopts following technical scheme: a kind of multibreak circuit breaker with current-limiting protection mechanism; comprise two adjacent fixed contacts that are positioned at insulation shell; and two moving contacts corresponding with described fixed contact; described fixed contact is installed in rotation in contact base; in contact base, be also provided with the spring for supporting fixed contact, between described two fixed contacts, connect by a flexible conductor.
Preferably, described contact base comprises a U-shaped frame, in U-shaped frame, be equipped with abreast the first bearing pin and the second bearing pin, described fixed contact is installed in rotation in U-shaped frame by the first bearing pin, sheathed two torsion springs on the second bearing pin, one end of torsion spring is resisted against the bottom of U-shaped frame, and the other end is resisted against on fixed contact.
Further, one section of plunger of the each protrusion in the both sides of described fixed contact, the end of described torsion spring is resisted against in plunger.
Further, insulating cover is also stamped in the top of described U-shaped frame.
Preferably, described moving contact is installed in rotation in insulation rotating shaft.
Compared with prior art, the utlity model has following beneficial effect, because fixed contact is installed in rotation in contact base, under the effect of electrodynamic repulsion force, fixed contact also can be scolded out, and between two fixed contacts owing to connecting by flexible conductor, can not interfere with each other, thereby can improve the breaking speed of circuit breaker, in the time there is very large fault current, guarantee the reliability of multibreak circuit breaker action.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utlity model has contact system in the multibreak circuit breaker of current-limiting protection mechanism.
Fig. 2 is the schematic perspective view of fixed contact part in the utility model.
Fig. 3 is the cutaway view of fixed contact part in the utility model.
Fig. 4 is the schematic perspective view from the fixed contact part of another direction observation.
In figure: 1, fixed contact 2, moving contact
3, contact base 4, flexible conductor
11, plunger 30, U-shaped frame
31, the first bearing pin 32, the second bearing pin
33, torsion spring 34, insulating cover
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, those skilled in the art can more clearly understand other advantages of the present utility model and effect thus.
It should be noted that structure that Figure of description illustrates, ratio, size etc. only in order to coordinate embodiment, more clearly understand design of the present utility model for those skilled in the art, not in order to limit protection range of the present utility model.The adjustment of the modification of any structure, the change of proportionate relationship or size, in the situation that not affecting effect of the present utility model and object and reaching, within all should still dropping on protection range of the present utility model.For the ease of understanding, the relative position relation of each parts is to be described according to the Butut mode of Figure of description, hereinafter alleged upper and lower be to define according to the direction of Figure of description.
As shown in Figure 1, a kind of multibreak circuit breaker with current-limiting protection mechanism of the utility model, comprises two adjacent fixed contacts 1 that are positioned at insulation shell (not shown), and two moving contacts 2 corresponding with described fixed contact 1.Fixed contact 1 is installed in rotation in contact base 3, is provided with the spring for supporting fixed contact 1 in contact base 3, while making dynamic/static contact closed, between dynamic/static contact, can keep certain contact.Moving contact 2 is installed in rotation in insulation rotating shaft (not shown), in order to realize the multibreak function of circuit breaker, between two fixed contacts 1, is electrically connected by a flexible conductor 4.
As shown in Figure 2, described contact base comprises a U-shaped frame 30, in U-shaped frame 30, be equipped with abreast the first bearing pin 31 and the second bearing pin 32, fixed contact 1 is installed in rotation in U-shaped frame 30 by the first bearing pin 31, sheathed two torsion springs 33 on the second bearing pin 32, one end of torsion spring 33 is resisted against the bottom of U-shaped frame 30, and the other end is resisted against on fixed contact 1, for supporting fixed contact 1.
Further, as shown in Figure 3, in one section of plunger 11 of the each protrusion in the both sides of fixed contact 1, insert in the spacing hole of U-shaped frame 30 bottoms one end of described torsion spring 33, and the other end is resisted against in plunger 11, thereby fixed contact 1 is applied to support force upwards.
Further, as shown in Figure 4, in order to protect the member of contact base inside, above U-shaped frame, be also stamped an insulating cover 34, can avoid U-shaped frame, the first bearing pin, the second bearing pin and torsion spring by electrical arc erosion.
Owing to being connected by flexible conductor 4 between adjacent fixed contact 1, can in circuit breaker, form multiple breakpoints of series connection, in the time of moving contact 2 and fixed contact 1 closure, the touch spring being connected with them can provide suitable closed end pressure.There is very large fault current in circuit time, moving contact 2 is upwards scolded out under the effect of electrodynamic repulsion force, simultaneously, fixed contact 1 also overcomes the resistance of spring and is scolded out downwards under the effect of electrodynamic repulsion force, so just improve the breaking speed of circuit breaker, and owing to being connected by flexible conductor between two fixed contacts 1, can not interfere scolding in the process of holding, thereby guarantee the reliability of multibreak circuit breaker action.
Claims (5)
1. one kind has the multibreak circuit breaker of current-limiting protection mechanism; comprise two the adjacent fixed contacts (1) that are positioned at insulation shell; and two moving contacts (2) corresponding with described fixed contact (1); it is characterized in that; described fixed contact (1) is installed in rotation in contact base (3); contact base is provided with the spring for supporting fixed contact (1) in (3), between described two fixed contacts (1), connects by a flexible conductor (4).
2. the multibreak circuit breaker with current-limiting protection mechanism according to claim 1; it is characterized in that; described contact base (3) comprises a U-shaped frame (30); in U-shaped frame (30), be equipped with abreast the first bearing pin (31) and the second bearing pin (32); described fixed contact (1) is installed in rotation in U-shaped frame (30) by the first bearing pin (31); upper sheathed two torsion springs of the second bearing pin (32) (33); one end of torsion spring (33) is resisted against the bottom of U-shaped frame (30), and the other end is resisted against on fixed contact (1).
3. the multibreak circuit breaker with current-limiting protection mechanism according to claim 2, is characterized in that, the each one section of plunger (11) of protruding in both sides of described fixed contact (1), and the end of described torsion spring (33) is resisted against in plunger (11).
4. the multibreak circuit breaker with current-limiting protection mechanism according to claim 2, is characterized in that, insulating cover (34) is also stamped in the top of described U-shaped frame (30).
5. the multibreak circuit breaker with current-limiting protection mechanism according to claim 1, is characterized in that, described moving contact (2) is installed in rotation in insulation rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800475.XU CN203607352U (en) | 2013-12-06 | 2013-12-06 | Multi-break circuit breaker with current-limiting protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800475.XU CN203607352U (en) | 2013-12-06 | 2013-12-06 | Multi-break circuit breaker with current-limiting protection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607352U true CN203607352U (en) | 2014-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320800475.XU Expired - Fee Related CN203607352U (en) | 2013-12-06 | 2013-12-06 | Multi-break circuit breaker with current-limiting protection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203607352U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931928A (en) * | 2016-07-06 | 2016-09-07 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN107756341A (en) * | 2017-11-13 | 2018-03-06 | 苏州锃道研磨技术有限公司 | Long-life efficient clinker clearing hammer with buffering reset feature |
| CN111161985A (en) * | 2018-11-07 | 2020-05-15 | 上海良信电器股份有限公司 | Switch contact system |
| CN117174546A (en) * | 2023-10-24 | 2023-12-05 | 河北宝凯电气股份有限公司 | Circuit breaker and method of contact arc extinguishing system |
-
2013
- 2013-12-06 CN CN201320800475.XU patent/CN203607352U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931928A (en) * | 2016-07-06 | 2016-09-07 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN105931928B (en) * | 2016-07-06 | 2018-11-09 | 上海电科电器科技有限公司 | The galvanic circle of breaker |
| CN107756341A (en) * | 2017-11-13 | 2018-03-06 | 苏州锃道研磨技术有限公司 | Long-life efficient clinker clearing hammer with buffering reset feature |
| CN111161985A (en) * | 2018-11-07 | 2020-05-15 | 上海良信电器股份有限公司 | Switch contact system |
| CN117174546A (en) * | 2023-10-24 | 2023-12-05 | 河北宝凯电气股份有限公司 | Circuit breaker and method of contact arc extinguishing system |
| CN117174546B (en) * | 2023-10-24 | 2024-05-03 | 河北宝凯电气股份有限公司 | Circuit breaker and method of contact arc extinguishing system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20201206 |