CN202917414U - Electromagnetic instantaneous protection mechanism for breaker - Google Patents
Electromagnetic instantaneous protection mechanism for breaker Download PDFInfo
- Publication number
- CN202917414U CN202917414U CN201220453312.4U CN201220453312U CN202917414U CN 202917414 U CN202917414 U CN 202917414U CN 201220453312 U CN201220453312 U CN 201220453312U CN 202917414 U CN202917414 U CN 202917414U
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- armature
- instantaneous protection
- protection mechanism
- breaker
- utility
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Abstract
The utility model relates to an electromagnetic instantaneous protection device for a breaker, wherein the device belongs to the beating type instantaneous protection structure field. The electromagnetic instantaneous protection mechanism comprises an armature; and a magnetic conductive block is installed on the armature. According to the utility model, under the circumstances that a draw bar, the armature, a thermal element and a magnet yoke are not changed, only one magnetic conductive block is needed to be installed on the armature, thereby increasing the magnetic flux through the armature to enhance the attraction force of the magnet yoke to the armature. Therefore, the instantaneous protection function of the breaker with the low current specification can be realized; and thus the instantaneous protection mechanism is substantially simplified and the manufacturing cost is lowered.
Description
Technical field
The utility model relates to a kind of electromagnetism instantaneous protection mechanism, is used for circuit breaker.
Background technology
Circuit breaker in the course of the work; electric current can flow through thermal element and connecting plate; when circuit occurs than major break down electric current (several times load current value); can produce larger magnetic field around the thermal element, make yoke produce larger magnetic force, when magnetic force can overcome external drag (for example spring counter-force); yoke just can be inhaled moving armature; armature drives draw bar and rotates, thereby makes the circuit breaker outage of threading off immediately, and circuit is played a protective role.But the instantaneous protection of small dimension electric current is difficult to realize by the clapper-type structure.
The mode that the instantaneous protection structure of small dimension electric current need be designed to helix tube type (coil turn that passes through to increase thermal element) instantaneous protection structure increases the magnetic force of yoke; the power value of suitably adjusting simultaneously reaction spring realizes the instantaneous protection of little current specification; this structure relative complex, manufacturing cost is high.
The utility model content
In view of above-mentioned, the purpose of this utility model provides a kind of circuit breaker electromagnetism instantaneous protection mechanism, and it can simplify the electromagnetism instantaneous protection structure of small dimension current product.
For addressing the above problem, the utility model adopts following technical scheme:
A kind of circuit breaker electromagnetism instantaneous protection mechanism comprises armature, it is characterized in that:
A magnetic inductive block is installed on the described armature.
Described magnetic inductive block is iron block.
The utility model is simple in structure; only needing increases a magnetic inductive block at the armature of original specification; just can increase the magnetic flux by armature; yoke is increased the suction of armature; can realize the instantaneous protection function of small electric traffic specification circuit breaker; instantaneous protection mechanism is simplified greatly, reduced manufacturing cost.In the situation that the little instantaneous protection that can satisfy the small dimension electric current of manufacturing cost change.
Description of drawings
Fig. 1 is the structural representation of the utility model in circuit breaker.
Embodiment
The utility model relates to circuit breaker electromagnetism instantaneous protection mechanism, comprises armature, and a magnetic inductive block is installed on the armature.
Be described further below in conjunction with accompanying drawing.
See also Fig. 1.Yoke 6 is fixed in the pedestal of circuit breaker with thermal element 5 and connecting plate 4.The afterbody that the width of armature 2 is less embeds in the draw bar 1 of plastic material, and all the other are exposed to the outside of draw bar 1, form a whole with draw bar.Magnetic inductive block 3 is installed on the armature 2.
When having electric current to pass through around yoke 6 and the armature 2, the magnetic field that produces around the electric current can be magnetized yoke 6 and armature 2 simultaneously, and the magnetic force that yoke 6 and armature 2 produce is attracted each other.Be fixed on because of yoke 6 and thermal element 5 and connecting plate 4 in the pedestal of circuit breaker and can do as a whole maintaining static; so armature 2 can be attracted to come by yoke 6; armature 2 and draw bar 1 are done as a whole meeting and are rotated around the axle of draw bar 1; when draw bar 1 forwards certain angle to; draw bar 1 can make tripping mechanism trip, and realizes the instantaneous protection function of circuit breaker.
Because after armature is installed a magnetic inductive block; can increase the magnetic flux by armature; even at this moment produce less electric current around the armature; also can make yoke that armature is produced enough large suction; when yoke to the magnetic force of armature during greater than the reverse resistance (for example spring counter-force) of outer bound pair draw bar, yoke just attracts armature and draw bar to rotate, when draw bar forwards certain angle to; draw bar can make tripping mechanism trip, and realizes the instantaneous protection function of circuit breaker.
Above-mentioned magnetic inductive block 3 adopts permeability magnetic material, for example iron block.
Above-mentioned execution mode of the present utility model is carried out detailed explanation, for those skilled in the art, can implement technical solutions of the utility model according to above-mentioned narration.
Claims (1)
1. a circuit breaker electromagnetism instantaneous protection mechanism comprises armature, it is characterized in that:
A magnetic inductive block is installed on the described armature, and described magnetic inductive block is iron block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453312.4U CN202917414U (en) | 2012-09-06 | 2012-09-06 | Electromagnetic instantaneous protection mechanism for breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453312.4U CN202917414U (en) | 2012-09-06 | 2012-09-06 | Electromagnetic instantaneous protection mechanism for breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202917414U true CN202917414U (en) | 2013-05-01 |
Family
ID=48165700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220453312.4U Expired - Lifetime CN202917414U (en) | 2012-09-06 | 2012-09-06 | Electromagnetic instantaneous protection mechanism for breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202917414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452569A (en) * | 2017-09-21 | 2017-12-08 | 温州瑞睿电气有限公司 | A kind of clapper-type tripper structure of breaker |
-
2012
- 2012-09-06 CN CN201220453312.4U patent/CN202917414U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452569A (en) * | 2017-09-21 | 2017-12-08 | 温州瑞睿电气有限公司 | A kind of clapper-type tripper structure of breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |