CN204271014U - A kind of novel breaker - Google Patents
A kind of novel breaker Download PDFInfo
- Publication number
- CN204271014U CN204271014U CN201420723659.5U CN201420723659U CN204271014U CN 204271014 U CN204271014 U CN 204271014U CN 201420723659 U CN201420723659 U CN 201420723659U CN 204271014 U CN204271014 U CN 204271014U
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- CN
- China
- Prior art keywords
- contact
- moving contact
- bearing pin
- arc
- flash barrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Novel breaker of the present utility model, comprise a shell, enclosure is fixed with a bearing pin, bearing pin is arranged with the disc moving contact pedestal that can rotate around it, disc moving contact pedestal is provided with upper moving contact and lower moving contact that the rotation centerline along bearing pin is arranged symmetrically with, the relative position of upper moving contact contact end face is provided with upper static contact, the relative position of lower moving contact contact end face is provided with lower fixed contact, the top of upper static contact and the below of lower fixed contact are provided with the upper arc-extinguish chamber and lower arc-extinguish chamber that the rotation centerline along bearing pin is arranged symmetrically with, the contact-making surface of upper static contact and upper moving contact is provided with flash barrier, the contact-making surface of lower fixed contact and lower moving contact is provided with lower flash barrier.This circuit breaker makes the electromagnetic effect between two cover arc-control devices drop to minimum, improve the stability of rupturing duty, even if short circuit current damages a contact also can not bring disaster to another contact, improve breaking capacity and job stability, extend its useful life.
Description
Technical field
The utility model relates to field of circuit breakers, is specifically related to a kind of Double-breakpoint circuit breaker.
Background technology
Circuit breaker (English name: circuit-breaker, circuit breaker) refer to the electric current that can close, carry and cut-off under normal loop condition and can close, the switching device of carrying and the electric current under cut-offfing abnormal loop condition in official hour.Circuit breaker can be used to distribute electric energy; infrequently start asynchronous motor; protection is carried out to power circuit and motor etc., can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they, its function is equivalent to Fuse switch and the combination of crossing underheat relay etc.And generally do not need to change parts after disjunction fault current.At present, obtain a wide range of applications.Circuit breaker is divided into primary cut-out by its scope of application, and low-voltage circuit breaker, and high-low pressure identification of boundaries is fuzzyyer, is called High-Voltage Electrical Appliances generally by more than 3kV.
The circuit breaker used in the market is single-point circuit breaker normally, and it realizes divide-shut brake function by the open/close states between the contact-making surface on moving contact and fixed contact.But, when circuit is short-circuited, because the sense of current is contrary, produces repulsive force on the contact surface, moving contact is separated with fixed contact, excessive simultaneously due to repulsive force, make moving contact not rest on separation point position, and may again jump to fixed contact, restrike, cause electrical appliance to burn out, have a strong impact on the reliability and stability of circuit breaker work.
In order to solve the not high problem of single-point circuit breaker functional reliability, in industry, also there is dual-interruption point breaker, on the basis of single-point short-circuiting device, namely having added a shortcircuit contact points, so just effectively can improve stability during short-circuiting device work.As a kind of dual-interruption point breaker that application number is 20112066307.0, adopt the double-contact moving contact being provided with the moving contact of buckle type parallel connection in circuit breaker, be connected in two fixed contacts respectively at two moving contact corresponding matching in insulation crust, described arc-extinguishing mechanism has two covers.As shown from the above technical solution, moving contact is in parallel, and the inevitable fixed contact be mated and arc extinguishing are also arranged in parallel.Constitute dual-breakpoint mechanism although it is so, but between arc extinguishing and joint conference make to produce between electromagnetism and influence each other thus affect the job stability of arc extinguishing.Simultaneously instantaneous short circuit electric current can produce burning and damaging fixed contact and moving contact, and moving contact parallel connection is each other apart from less, burning that any one breakpoint contact position is produced all also can produce damage to another moving contact, therefore moving contact is arranged in parallel and makes instantaneous short circuit electric current double to amplify to moving contact and fixed contact damage effect, has had a strong impact on the useful life of circuit breaker and the reliability of work.
Therefore, how designing the dual-interruption point breaker that a kind of breaking capacity is strong and job stability is high, is the technical problem that in industry, the relevant personnel are urgently to be resolved hurrily.
Utility model content
For solving the problems of the technologies described above, we have proposed a kind of novel breaker, not only increasing breaking capacity and the job stability of dual-interruption point breaker, and extending the useful life of circuit breaker.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of novel breaker, it comprises a shell, described enclosure is fixed with a bearing pin, described bearing pin is arranged with the disc moving contact pedestal that can rotate around it, described disc moving contact pedestal is provided with upper moving contact and lower moving contact that the rotation centerline along described bearing pin is arranged symmetrically with, the relative position of described upper moving contact contact end face is provided with upper static contact, the relative position of lower moving contact contact end face is provided with lower fixed contact, the top of described upper static contact and the below of lower fixed contact are provided with the upper arc-extinguish chamber and lower arc-extinguish chamber that the rotation centerline along described bearing pin is arranged symmetrically with, the contact-making surface of described upper static contact and described upper moving contact is provided with flash barrier, the contact-making surface of described lower fixed contact and described lower moving contact is provided with lower flash barrier.。
Preferably, described upper flash barrier is fixedly installed on described upper static contact, and its one side towards described upper moving contact is designed to arc.
Preferably, described lower flash barrier is fixedly installed on described lower fixed contact, and its one side towards described lower moving contact is designed to arc.
Pass through technique scheme, the disc type moving contact of the utility model by traditional buckle type moving contact is made into rotate around bearing pin, contact is symmetrical along disc type moving contact bearing pin center line, the fixed contact making two contacts corresponding like this and arc-extinguish chamber also symmetrical along disc type moving contact bearing pin center line, the electromagnetic effect between two cover arc-control devices is made to drop to minimum, thus improve the stability of rupturing duty, even if the damage to a contact that short circuit current produces can not bring disaster to another contact simultaneously, even if another contact still can ensure normal work when a contact damage can not work, not only increase breaking capacity and the job stability of dual-interruption point breaker, and extend the useful life of circuit breaker.Thus reach modern design, the rational in infrastructure and object that effect is good.
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 the structural representation of a kind of novel breaker disclosed in the utility model embodiment.
Numeral and the corresponding component title represented by letter in figure:
1. flash barrier 62. times flash barriers on arc-extinguish chamber 52. times arc-extinguish chambers 61. on moving contact 32. lower moving contact 41. upper static contact 42. times fixed contacts 51. on shell 2. bearing pin 3. disc moving contact pedestal 31.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of novel breaker, not only increases breaking capacity and the job stability of dual-interruption point breaker, and extends the useful life of circuit breaker.
Below in conjunction with embodiment and embodiment, the utility model is described in further detail.
Embodiment.
As shown in Figure 1, a kind of novel breaker, it comprises a shell 1, described shell 1 inside is fixed with a bearing pin 2, described bearing pin 2 is arranged with the disc moving contact pedestal 3 that can rotate around it, described disc moving contact pedestal 3 is provided with upper moving contact 31 and lower moving contact 32 that the rotation centerline along described bearing pin 2 is arranged symmetrically with, the relative position that described upper moving contact 31 contacts end face is provided with upper static contact 41, the relative position that lower moving contact 32 contacts end face is provided with lower fixed contact 42, the top of described upper static contact 41 and the below of lower fixed contact 42 are provided with the upper arc-extinguish chamber 51 and lower arc-extinguish chamber 52 that the rotation centerline along described bearing pin 2 is arranged symmetrically with, described upper static contact 41 and the contact-making surface of described upper moving contact 31 are provided with flash barrier 61, described lower fixed contact 42 and the contact-making surface of described lower moving contact 32 are provided with lower flash barrier 62.
Wherein, in order to reach better arc quenching effect, described upper flash barrier 61 is fixedly installed on described upper static contact 41, and its one side towards described upper moving contact 31 is designed to arc; Described lower flash barrier 62 is fixedly installed on described lower fixed contact 42, and its one side towards described lower moving contact 32 is designed to arc.
In this example, this novel breaker is by the upper moving contact 31 that traditional buckle type moving contact made into disc type moving contact pedestal 3 central pin shaft 2 center line and be arranged symmetrically with and lower moving contact 32, make the upper static contact 41 of moving contact 31 and lower moving contact 32 correspondence and lower fixed contact 42 and upper arc-extinguish chamber 51 and bearing pin 2 center line of lower arc-extinguish chamber 52 also along disc type moving contact pedestal 3 center symmetrical like this, the electromagnetic effect between two cover arc-control devices is made to drop to minimum, thus improve the stability of rupturing duty, even if the damage to a contact that short circuit current produces can not bring disaster to another contact simultaneously, even if another contact still can ensure normal work when a contact damage can not work, not only increase breaking capacity and the job stability of dual-interruption point breaker, and extend the useful life of circuit breaker.Thus reach modern design, the rational in infrastructure and object that effect is good.
Above-described is only a kind of novel breaker preferred implementation of the present utility model; should be understood that; for the person of ordinary skill of the art; under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (3)
1. a novel breaker, it is characterized in that, it comprises a shell, described enclosure is fixed with a bearing pin, described bearing pin is arranged with the disc moving contact pedestal that can rotate around it, described disc moving contact pedestal is provided with upper moving contact and lower moving contact that the rotation centerline along described bearing pin is arranged symmetrically with, the relative position of described upper moving contact contact end face is provided with upper static contact, the relative position of lower moving contact contact end face is provided with lower fixed contact, the top of described upper static contact and the below of lower fixed contact are provided with the upper arc-extinguish chamber and lower arc-extinguish chamber that the rotation centerline along described bearing pin is arranged symmetrically with, the contact-making surface of described upper static contact and described upper moving contact is provided with flash barrier, the contact-making surface of described lower fixed contact and described lower moving contact is provided with lower flash barrier.
2. a kind of novel breaker according to claim 1, is characterized in that, described upper flash barrier is fixedly installed on described upper static contact, and its one side towards described upper moving contact is designed to arc.
3. a kind of novel breaker according to claim 2, is characterized in that, described lower flash barrier is fixedly installed on described lower fixed contact, and its one side towards described lower moving contact is designed to arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420723659.5U CN204271014U (en) | 2014-11-27 | 2014-11-27 | A kind of novel breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420723659.5U CN204271014U (en) | 2014-11-27 | 2014-11-27 | A kind of novel breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271014U true CN204271014U (en) | 2015-04-15 |
Family
ID=52805866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420723659.5U Expired - Fee Related CN204271014U (en) | 2014-11-27 | 2014-11-27 | A kind of novel breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271014U (en) |
-
2014
- 2014-11-27 CN CN201420723659.5U patent/CN204271014U/en not_active Expired - Fee Related
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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: 20150415 Termination date: 20211127 |