CN206961773U - Short-circuit protection and the miniature circuit breaker including the device - Google Patents
Short-circuit protection and the miniature circuit breaker including the device Download PDFInfo
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- CN206961773U CN206961773U CN201720489372.4U CN201720489372U CN206961773U CN 206961773 U CN206961773 U CN 206961773U CN 201720489372 U CN201720489372 U CN 201720489372U CN 206961773 U CN206961773 U CN 206961773U
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- short
- circuit breaker
- circuit protection
- component
- contact portion
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Abstract
The utility model discloses a kind of short-circuit protection and the miniature circuit breaker including the device; miniature circuit breaker includes stationary contact portion, movable contact portion and kick component; driven during kick component kick movable contact portion and stationary contact part from; wherein, short-circuit protection includes electric-conductor, ferrous metal part, attracts metalwork and push piece.Electric-conductor is connected with stationary contact portion；Ferrous metal part corresponds to electric-conductor setting；Attract metalwork to be rotatably connected on the housing of miniature circuit breaker and correspond to the setting of ferrous metal part；Push piece one end, which is connected to, to be attracted on metalwork, and the other end corresponds to the setting of kick component.The short-circuit protection that miniature circuit breaker of the present utility model uses, it is compact-sized, occupy little space, ensure that miniature circuit breaker overall dimensions are conformed to the standard regulation.
Description
Technical field
A kind of miniature circuit breaker is the utility model is related to, is to be related to a kind of more compact structure, compact short circuit specifically
Protection device, the utility model further relate to a kind of miniature circuit breaker using the short-circuit protection.
Background technology
Miniature circuit breaker is most popular a kind of terminal protection electrical equipment during building electrical terminal power distribution equipment is drawn.It is miniature
Breaker is made up of close/open machine, contact, protection device, arc quenching system etc..Its operation principle is：It is (de- using protection device
Detain device) and electrical current heat component realization overload and short-circuit protection, when the electric current that the coil in electrical current heat component passes through is more than setting
During current value, the dynamic iron core action of magnetictrip, promote strike bar to hit operating mechanism, unlock operating mechanism, make open circuit
Device separating brake and then disconnecting circuit, so as to realize overload and short-circuit protection to circuit.After fault is discharged, then pass through division
Brake mechanism carries out closing operation so as to connect circuit.At present, most miniature circuit breakers that China uses now are manual division
Lock formula, manually stir close/open machine can and make-break operation is carried out to circuit.Manual divide-shut brake formula miniature circuit breaker knot
Structure is simple, cost is cheap and does not need extra electric energy, thus breaking-closing operating can be carried out in the case of without electric energy,
It is widely used in old power network.
But with the development of science and technology, intelligent appliance has obtained more and more extensive application, as protection electrical equipment
Common miniature circuit breaker, also it is badly in need of installing intelligence control system additional.In order to common miniature with wide variety of manual divide-shut brake formula
Breaker matches, and now, mainly increasing one newly in common miniature circuit breaker side can be with the intelligent micro open circuit of remote control
Device, intelligent miniature circuit breaker drive other common miniature circuit breakers to carry out breaking-closing operating according to input control signal.
《The external Circuit breaker technology specification of electric energy meter》In strict specification carried out to the appearance and size of breaker limited, its
In, restriction intelligent micro-circuit breaker is consistent with the outer shape and size of common miniature circuit breaker, to ensure the consistent of outward appearance
Property, and the convenient large-scale circuit breaker terminal equipment replacement of progress.
But the size of the intelligent micro-circuit breaker of prior art is typically bigger than common miniature circuit breaker size, in profile
Also it is inconsistent, it can not directly use, need first to carry out adaptability reform, early stage to the infrastructure device for placing miniature circuit breaker before use
Put into it is big, long in time limit, be unfavorable for intelligent grid promote process.
The short-circuit protection of breaker is mainly made up of coil, iron core, magnetic strategic point etc..When there is short circuit current, line
Circle will produce very big magnetic field, and the dynamic iron core inside iron core is magnetized, and dynamic iron core under the action of a magnetic force, overcomes iron core spring
Reaction force, promote iron core inside push rod, finally in the presence of push rod post-failure behaviors locking mechanism, make breaker wink
Between disjunction.But as a result size is big, limited circuit breaker internal space is taken very much.
Utility model content
The purpose of this utility model is that solve the problems, such as that the short-circuit protection of existing miniature circuit breaker is oversized, is carried
It is simple in construction for a kind of short-circuit protection and the intelligent miniature breaker including the short-circuit protection, and reduce institute
Take up space.
To achieve these goals, short-circuit protection of the present utility model, it is connected in a miniature circuit breaker, it is described micro-
Type breaker includes stationary contact portion, movable contact portion and kick component, drives the movable contact portion during kick component kick
With the stationary contact part from, wherein, the short-circuit protection includes electric-conductor, ferrous metal part, attracts metalwork and to push away
Arrived piece.Electric-conductor is connected with the stationary contact portion；Ferrous metal part corresponds to the electric-conductor and set；Attract metalwork rotation connection
On the housing of the miniature circuit breaker and the corresponding ferrous metal part is set；Push piece one end is connected to the attraction metalwork
On, the other end corresponds to the kick component and set.
In one embodiment of above-mentioned short-circuit protection, the ferrous metal part is U-shaped, has U-type groove, the conduction
Part passes through the U-type groove.
In one embodiment of above-mentioned short-circuit protection, the attraction metalwork be rod like parts, including first end with
Second end, the first end are rotatably connected on the housing of the miniature circuit breaker, and second end is free end.
In one embodiment of above-mentioned short-circuit protection, metalwork is attracted to be arranged at the top of the U-type groove.
In one embodiment of above-mentioned short-circuit protection, the ferrous metal part has the corresponding attraction metalwork
Hypotenuse portion.
In one embodiment of above-mentioned short-circuit protection, the push piece is nonmetal parts.
In one embodiment of above-mentioned short-circuit protection, one end of the ferrous metal part is fixedly connected on described miniature
On the housing of breaker.
Miniature circuit breaker of the present utility model, including stationary contact portion, movable contact portion, kick component and short-circuit protection dress
Put, drive during the kick component kick movable contact portion and the stationary contact part from, wherein, the short-circuit protection
For above-mentioned short-circuit protection.
In one embodiment of above-mentioned miniature circuit breaker, the miniature circuit breaker also includes arc extinguishing component and overtemperature protection
Component, the short-circuit protection are arranged between the arc extinguishing component and overtemperature protection component.
In one embodiment of above-mentioned miniature circuit breaker, the overtemperature protection component includes bimetal piece, double gold
The free end of category part corresponds to the push piece and set.
Beneficial functional of the present utility model is, the short-circuit protection that miniature circuit breaker of the present utility model uses, ties
Structure is compact, occupies little space, and ensures that miniature circuit breaker overall dimensions are conformed to the standard regulation.
The utility model is described in detail below in conjunction with the drawings and specific embodiments, but not as to the utility model
Restriction.
Brief description of the drawings
Fig. 1 is the structural representation that short-circuit protection of the present utility model is applied to miniature circuit breaker；
Fig. 2 is the partial enlarged drawing of short-circuit protection of the present utility model.
Wherein, reference
100 short-circuit protections
110 electric-conductors
120 ferrous metal parts
121 U-type grooves
122 hypotenuse portions
130 attract metalwork
131 first ends
132 second ends
140 push pieces
200 miniature circuit breakers
210 stationary contact portions
220 movable contact portions
230 kick components
240 arc extinguishing components
250 overtemperature protection components
251 bimetal pieces
Embodiment
Technical solutions of the utility model are described in detail with specific embodiment below in conjunction with the accompanying drawings, with further
Understand the purpose of this utility model, scheme and effect, but be not intended as the limit of the appended claims for the utility model protection domain
System.
As depicted in figs. 1 and 2, short-circuit protection 100 of the present utility model is connected in a switch, in the present embodiment with
Switch and illustrated for miniature circuit breaker.Miniature circuit breaker 200 includes stationary contact portion 210, movable contact portion 220 and kick component
230, drive movable contact portion 220 to be separated with stationary contact portion 210 during kick 230 kick of component.Short-circuit protection 100 is miniature disconnected
Road device 200 provides short-circuit protection, and kick component 230 is triggered to disconnect electric brake when occurring short-circuit.
Specifically, short-circuit protection 100 includes electric-conductor 110, ferrous metal part 120, attracts metalwork 130 and pushing and pressing
Part 140.Electric-conductor 110 is connected with stationary contact portion 210, and the corresponding electric-conductor 110 of ferrous metal part 120 is set, and attracts metalwork 130
Corresponding ferrous metal part 120 is set, and one end of push piece 140, which is connected to, to be attracted on metalwork 130, and the other end corresponds to kick component
230 are set.
When a short circuit occurs, in electric-conductor 110 by short circuit current, high current magnetic field, high current are produced at electric-conductor 110
The ferrous metal part 120 that magnetic field makes to correspond to the setting of electric-conductor 110 magnetizes.Attract metalwork 130 by magnetic caused by ferrous metal part 120
Power is adsorbed and moved, and attracts metalwork 130 to drive the push piece 140 being attached to move and push against kick group while moving
The kick of part 230, movable contact portion 220 separate and separating brake with stationary contact portion 210.
Further, as shown in Fig. 2 ferrous metal part 120 can be U-shaped, there is U-type groove 121, electric-conductor 110 is accordingly worn
The U-type groove 121 of ferrous metal part 120 is crossed, the bread of ferrous metal part 120 3 encloses electric-conductor 110 and set.Flowed through when in electric-conductor 110
Short circuit current and when producing high current magnetic field, ferrous metal part 120 can be magnetized and produce magnetic force.
Attraction metalwork 130 is rod like parts, is arranged at the top of U-type groove 121, including the end 132 of first end 131 and second,
First end 131 is rotatably connected on the housing of miniature circuit breaker 200, and the second end 132 is free end.One end of ferrous metal part 120
It is fixedly connected on the housing of miniature circuit breaker 200.Ferrous metal part 120 has the corresponding hypotenuse portion 122 for attracting metalwork 130,
As illustrated, hypotenuse portion 122 is located at the top side wall on the U-shaped both sides of ferrous metal part 120.The hypotenuse portion 122 of ferrous metal part 120
Distance attracts gradually increasing apart from the end of first end 131 to the second 132 of self-gravitation metalwork 130 for metalwork 130, thinks attraction
Headspace when metalwork 130 rotates.
When the ferrous metal part 120 that corresponding electric-conductor 110 is set produces magnetic force, attract free the second of metalwork 130
End 132 is attracted and rotated around first end 131 to the direction of ferrous metal part 120.Driven while attracting metalwork 130 to rotate
The push piece 140 being connected thereto rotates.
Push piece 140 is nonmetal parts, and the one end of push piece 140 is connected to the first end 131 of distance attraction metalwork 130
At center of rotation suitable distance, so as to be rotated and appropriate exercise in company with attraction metalwork 130.The other end of push piece 140
Corresponding to kick component 230, when occurring short-circuit, push piece 140 pushes against kick component with the rotation for attracting metalwork 130
230, make the kick of pushing and pressing component 230 and drive movable contact portion 220 to leave movable contact portion 210.
When short circuit current disappears, high current magnetic field disappears immediately, the magnetic force disappearance because of demagnetization of ferrous metal part 120, attracts gold
Category part 130 sets back in the presence of the reset components of such as reduction torsion spring etc, drives push piece 140 to leave kick component
230。
As shown in figure 1, miniature circuit breaker 200 also includes arc extinguishing component 240 and overtemperature protection component 250, short-circuit protection dress
100 are put to be arranged between arc extinguishing component 240 and overtemperature protection component 250.
Overtemperature protection component 250 includes bimetal piece 251, and the free end of bimetal piece 251 corresponds to short-circuit protection 100
Push piece 140 set.When overheating, the heated bending of bimetal piece 251 and the push piece for pushing against short-circuit protection 100
140, push piece 140 promotes kick component 230 to occur kick and separating brake, to realize overtemperature protection.
Certainly, the utility model can also have other various embodiments, without departing substantially from the utility model spirit and its essence
In the case of, those skilled in the art work as can make various corresponding changes and deformation according to the utility model, but these
Corresponding change and deformation should all belong to the scope of the claims appended by the utility model.
Claims (10)
1. a kind of short-circuit protection, being connected in a miniature circuit breaker, the miniature circuit breaker includes stationary contact portion, movable contact
Portion and kick component, drive during the kick component kick movable contact portion with the stationary contact part from its feature exists
In the short-circuit protection includes：
Electric-conductor, it is connected with the stationary contact portion；
Ferrous metal part, the corresponding electric-conductor are set；
Attract metalwork, be rotatably connected on the housing of the miniature circuit breaker and the corresponding ferrous metal part is set；And
Push piece, one end are connected on the attraction metalwork, and the other end corresponds to the kick component and set.
2. short-circuit protection according to claim 1, it is characterised in that the ferrous metal part is U-shaped, has U-type groove,
The electric-conductor passes through the U-type groove.
3. short-circuit protection according to claim 2, it is characterised in that the attraction metalwork is rod like parts, including
First end and the second end, the first end are rotatably connected on the housing of the miniature circuit breaker, and second end is free end.
4. short-circuit protection according to claim 3, it is characterised in that attract metalwork to be arranged at the U-type groove
Top.
5. short-circuit protection according to claim 4, it is characterised in that the ferrous metal part has the corresponding attraction
The hypotenuse portion of metalwork.
6. according to the short-circuit protection described in any one of claim 1 to 5, it is characterised in that the push piece is nonmetallic
Part.
7. according to the short-circuit protection described in any one of claim 1 to 5, it is characterised in that one end of the ferrous metal part
It is fixedly connected on the housing of the miniature circuit breaker.
8. a kind of miniature circuit breaker, including stationary contact portion, movable contact portion, kick component and short-circuit protection, the kick
Driven during component kick the movable contact portion and the stationary contact part from, it is characterised in that the short-circuit protection is power
Profit requires any one of 1 to 7 short-circuit protection.
9. miniature circuit breaker according to claim 8, it is characterised in that the miniature circuit breaker also include arc extinguishing component and
Overtemperature protection component, the short-circuit protection are arranged between the arc extinguishing component and overtemperature protection component.
10. miniature circuit breaker according to claim 9, it is characterised in that the overtemperature protection component includes bimetal piece,
The free end of the bimetal piece corresponds to the push piece and set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720489372.4U CN206961773U (en) | 2017-05-04 | 2017-05-04 | Short-circuit protection and the miniature circuit breaker including the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720489372.4U CN206961773U (en) | 2017-05-04 | 2017-05-04 | Short-circuit protection and the miniature circuit breaker including the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206961773U true CN206961773U (en) | 2018-02-02 |
Family
ID=61374351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720489372.4U Active CN206961773U (en) | 2017-05-04 | 2017-05-04 | Short-circuit protection and the miniature circuit breaker including the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206961773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114883156A (en) * | 2022-07-12 | 2022-08-09 | 东莞市中汇瑞德电子股份有限公司 | Built-in circuit breaker of electromagnetic operating mechanism |
-
2017
- 2017-05-04 CN CN201720489372.4U patent/CN206961773U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114883156A (en) * | 2022-07-12 | 2022-08-09 | 东莞市中汇瑞德电子股份有限公司 | Built-in circuit breaker of electromagnetic operating mechanism |
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