CN204632704U - A kind of breaker of plastic casing - Google Patents
A kind of breaker of plastic casing Download PDFInfo
- Publication number
- CN204632704U CN204632704U CN201520375813.9U CN201520375813U CN204632704U CN 204632704 U CN204632704 U CN 204632704U CN 201520375813 U CN201520375813 U CN 201520375813U CN 204632704 U CN204632704 U CN 204632704U
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- CN
- China
- Prior art keywords
- contact
- striking
- breaker
- plastic casing
- moving contact
- 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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- 230000005520 electrodynamics Effects 0.000 abstract description 5
- 230000008033 biological extinction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of breaker of plastic casing, by arranging some contact body be arranged in parallel, again a striking contact for striking is set in the middle of the contact body be arranged in parallel, thus reach reduction electrodynamic repulsion force, promote electrodynamical stability, striking contact is provided with striking portion, can enter arc control device fast by pilot arc, accelerate arc extinction, improve breaking capacity.
Description
Technical field
The utility model relates to field of circuit breakers, is specifically related to a kind of breaker of plastic casing.
Background technology
Known technology is applied, the effective ways improving short circuit breaking capacity are circuit breakers of design current-limiting type, its operation principle is: when circuit breaker is subject to short circuit current effect, utilize short circuit current to be pushed open fast by moving contact the electrodynamic repulsion force of moving contact of breaker to unlock mechanism subsequently, circuit breaker is divided
Lock, or utilize short circuit current to produce electrodynamic repulsion force on moving contact of breaker, by transmitting, to mechanism
Carry out quick release, make breaker open operation.The contact system of circuit breaker both domestic and external adopts moving conductive rod and the moving contact of same size usually.But, when rated current and short circuit current effect, due to the electromagnetic induction between three-phase current, on each linkage conducting rod and moving contact, electric current is unequal, this just causes the current density of some moving conductive rod and moving contact higher than mean value, greatly reduces the effect of its carrying rated current and short circuit current.
Summary of the invention
In order to solve the deficiencies in the prior art, of the present utility modelly provide a kind of breaker of plastic casing.
The technical solution that the utility model adopts is: a kind of breaker of plastic casing, comprise housing, the breaking units of opening/closing operation mechanism and some parallel combinations, the breaking units of described parallel combination comprises moving contact, fixed contact and arc control device, described moving contact passes through shaft support, the breaking units of described some parallel combinations is linked together by connecting rod, described moving contact comprises some contact body be arranged in parallel, striking contact is also provided with in the middle of described some contact body be arranged in parallel, the contact direction of described striking contact stretches out, length is longer than the contact body of both sides, described striking contact front end is also provided with striking portion.
Described contact body and striking contact are equipped with connecting hole, and described contact body is fixedly connected with by rotating shaft is hinged with striking contact.
Described moving contact also comprises moving contact pad, and described contact body and striking contact are hinged on moving contact pad.
Described contact body and striking contact are provided with boss, and described moving contact pad is provided with installing hole, and described boss is connected with installing hole by elastic component.
Described striking contact quantity is 1, and described contact body quantity is 4, and 4 contact body are evenly distributed in striking contact both sides.
Also be provided with fixed cover outside described moving contact pad, described moving contact pad is hinged on fixed cover.
Described opening/closing operation mechanism is hinged on fixed cover.
The beneficial effects of the utility model are: the utility model provides a kind of breaker of plastic casing, by arranging some contact body be arranged in parallel, again a striking contact for striking is set in the middle of the contact body be arranged in parallel, thus reach reduction electrodynamic repulsion force, promote electrodynamical stability, striking contact is provided with striking portion, can enter arc control device fast by pilot arc, accelerate arc extinction, improve breaking capacity.
Accompanying drawing explanation
Fig. 1 is the utility model stereogram.
Fig. 2 is the utility model internal structure schematic diagram.
Fig. 3 is the utility model moving contact structure schematic diagram.
Fig. 4 is the utility model moving contact structure schematic diagram.
1-housing in figure, 2-opening/closing operation mechanism, 3-breaking units, 4-moving contact, 5-fixed cover, 31-arc control device, 32-connecting rod, 41-contact body, 42-striking contact, 43-moving contact pad, 44-boss, 421-striking portion, 431-installing hole, 432-elastic component.
Embodiment
Existing composition graphs 1, Fig. 2, Fig. 3, Fig. 4 is further described the utility model, a kind of breaker of plastic casing, comprise housing 1, the breaking units 3 of opening/closing operation mechanism 2 and some parallel combinations, the breaking units 3 of described parallel combination comprises moving contact 4, fixed contact and arc control device 31, described moving contact 4 passes through shaft support, the breaking units 3 of described some parallel combinations is linked together by connecting rod 32, described moving contact 4 comprises some contact body 41 be arranged in parallel, striking contact 42 is also provided with in the middle of described some contact body 41 be arranged in parallel, described striking contact 42 quantity is 1, described contact body 41 quantity is 4, 4 contact body 41 are evenly distributed in striking contact 42 both sides.The contact direction of described striking contact 42 stretches out, and length is longer than the contact body 41 of both sides, and described striking contact 42 front end is also provided with striking portion 421.Described contact body 41 and striking contact 42 are equipped with connecting hole, and described contact body 41 is fixedly connected with by rotating shaft is hinged with striking contact 42.The utility model by arranging a striking contact 42 for striking in the middle of the contact body 41 be arranged in parallel, thus reach reduction electrodynamic repulsion force, promote electrodynamical stability, striking contact 42 is provided with striking portion 421, arc control device 31 can be entered fast by pilot arc, accelerate arc extinction, improve breaking capacity.
Described moving contact 4 also comprises moving contact pad 43, and described contact body 41 and striking contact 42 are hinged on moving contact pad 43.Described contact body 41 and striking contact 42 are provided with boss 44, and described moving contact pad 43 is provided with installing hole 431, and described boss 44 is connected with installing hole 431 by elastic component 432.
Also be provided with fixed cover 5 outside described moving contact pad 43, described moving contact pad 43 is hinged on fixed cover 5.Described opening/closing operation mechanism 2 is hinged on fixed cover 5.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a breaker of plastic casing, comprise housing (1), the breaking units (3) of opening/closing operation mechanism (2) and some parallel combinations, the breaking units (3) of described parallel combination comprises moving contact (4), fixed contact and arc control device (31), described moving contact (4) passes through shaft support, the breaking units (3) of described some parallel combinations is linked together by connecting rod (32), it is characterized in that, described moving contact (4) comprises some contact body (41) be arranged in parallel, striking contact (42) is also provided with in the middle of described some contact body (41) be arranged in parallel, the contact direction of described striking contact (42) stretches out, length is longer than the contact body (41) of both sides, described striking contact (42) front end is also provided with striking portion (421).
2. a kind of breaker of plastic casing according to claim 1, is characterized in that, described contact body (41) and striking contact (42) are equipped with connecting hole, and described contact body (41) is fixedly connected with by rotating shaft is hinged with striking contact (42).
3. a kind of breaker of plastic casing according to claim 1, is characterized in that, described moving contact (4) also comprises moving contact pad (43), and described contact body (41) and striking contact (42) are hinged on moving contact pad (43).
4. a kind of breaker of plastic casing according to claim 3, it is characterized in that, described contact body (41) and striking contact (42) are provided with boss (44), described moving contact pad (43) is provided with installing hole (431), and described boss (44) is connected with installing hole (431) by elastic component (432).
5. a kind of breaker of plastic casing according to claim 1, is characterized in that, described striking contact (42) quantity is 1, and described contact body (41) quantity is 4, and 4 contact body (41) are evenly distributed in striking contact (42) both sides.
6. a kind of breaker of plastic casing according to claim 3, is characterized in that, described moving contact pad (43) outside is also provided with fixed cover (5), and described moving contact pad (43) is hinged on fixed cover (5).
7. a kind of breaker of plastic casing according to claim 6, is characterized in that, described opening/closing operation mechanism (2) is hinged on fixed cover (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520375813.9U CN204632704U (en) | 2015-06-03 | 2015-06-03 | A kind of breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520375813.9U CN204632704U (en) | 2015-06-03 | 2015-06-03 | A kind of breaker of plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204632704U true CN204632704U (en) | 2015-09-09 |
Family
ID=54051704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520375813.9U Expired - Fee Related CN204632704U (en) | 2015-06-03 | 2015-06-03 | A kind of breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204632704U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900458A (en) * | 2015-06-03 | 2015-09-09 | 华通机电股份有限公司 | Molded case circuit breaker |
-
2015
- 2015-06-03 CN CN201520375813.9U patent/CN204632704U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900458A (en) * | 2015-06-03 | 2015-09-09 | 华通机电股份有限公司 | Molded case circuit breaker |
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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: 20150909 |