CN209591955U - A kind of striking static contact and its breaker of plastic casing - Google Patents
A kind of striking static contact and its breaker of plastic casing Download PDFInfo
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- CN209591955U CN209591955U CN201920653791.6U CN201920653791U CN209591955U CN 209591955 U CN209591955 U CN 209591955U CN 201920653791 U CN201920653791 U CN 201920653791U CN 209591955 U CN209591955 U CN 209591955U
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- platform
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- connecting portion
- static contact
- breaker
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Abstract
It includes: stationary contact bracket, contact and arc arc ignition bar that the utility model, which discloses a kind of striking static contact, and stationary contact bracket includes the first platform, first connecting portion, the second platform, second connecting portion and third platform；First platform connect by first connecting portion with second platform, and the first platform and the first connecting portion angle that forms that Open Side Down are obtuse angle, and the angle of the opening upwards of first connecting portion and the formation of the second platform is obtuse angle；Second platform is also connect by the second connecting portion with the third platform, and third platform is located at the top of second platform；Contact is located on the third platform；Arc arc ignition bar is between the first connecting portion and second platform.By setting arc arc ignition bar in the utility model, it can effectively inhibit the diffusion of arc energy, to reduce the ablation of static contact, improve the breaking capacity of breaker.
Description
Technical field
The utility model relates to field of circuit breakers, more particularly to a kind of striking static contact and its breaker of plastic casing.
Background technique
With the raising of people's lives level, social production and the life of the people increasingly be unable to do without electric use,
Exactly because the reliability requirement of power supply is also higher and higher now to the great attention of electric energy, various high and low voltage electrical equipments is promoted to protect
Protective function is more perfect, and breaker of plastic casing has also obtained development at full speed as a member in low-voltage electrical apparatus.
Breaker of plastic casing is the electric current referred to close, carry and cut-off under normal loop condition and can close, and is being provided
Time in carrying and cut-off the switching device of the electric current under exceptional condition.Breaker can be used to distribute electric energy, opening infrequently
Dynamic asynchronous motor protects the implementations such as power circuit and motor, when heavy overload or short circuit and under-voltage occurs in they
Etc. failures when, can automatically cut off circuit, the combination that function is equivalent to Fuse switch and crosses underheat relay etc. is quiet
Contact is the important component of breaker, and contact plays a part of cut-offfing, be connected as the core component in low voltage switch equipment,
Its performance directly affects the quality and service life of breaker, breaker circuit connect or closing course in, moving contact and
The electric arc of high temperature high fever can be generated between static contact, if electric arc rapidly can not export and extinguish, it will two contact of ablation it
Between contact, and biggish injury is caused to the shell of breaker of plastic casing, in existing breaker of plastic casing, dynamic/static contact is closed
The arc energy for closing, cut-offfing generation introduces arc-chutes and extinguishes, but some arc energy does not introduce arc-chutes, residual
The arc energy stayed makes static contact and the ablation of other mechanisms, reduces the breaking capacity of breaker of plastic casing, to reduce micro-
The service life of type breaker influences the quality of product.
Summary of the invention
The purpose of the utility model is to provide a kind of striking static contact and its breaker of plastic casing, are connecting breaker of plastic casing
Or cut-off the arc energy that moment generates and fully enter arc-chutes, improve the breaking capacity of breaker of plastic casing.
To achieve the above object, the utility model provides following scheme:
A kind of striking static contact, the static contact include:
Stationary contact bracket, contact and arc arc ignition bar；
The stationary contact bracket includes that the first platform, first connecting portion, the second platform, second connecting portion and third are flat
Platform；First platform is connect by the first connecting portion with second platform, and first platform and described first
It is obtuse angle that interconnecting piece, which forms Open Side Down angle, and the angle for the opening upwards that the first connecting portion is formed with second platform is
Obtuse angle；Second platform is also connect by the second connecting portion with the third platform, and the third platform is located at institute
State the top of the second platform；
The contact is located on the third platform；
The arc arc ignition bar is between the first connecting portion and second platform.
Optionally, the static contact further include: boss and shield；
Between the first connecting portion and second platform, the arc arc ignition bar is located at described convex the boss
On platform；
The shield is located at the outside of the second connecting portion, and is connected on the boss.
Optionally, the static contact further include: arc-chutes, the arc-chutes are located at the top of the third platform.
Optionally, the static contact further include: soket head cap screw；Threaded hole is offered on first platform, it is described interior
Hex screw is used to connect across the threaded hole with extraneous power supply line.
Optionally, mounting hole is offered on the first platform, offers fixation hole on second platform.
The utility model still further provides a kind of breaker of plastic casing, the above-mentioned static contact of the breaker of plastic casing.
According to specific embodiment provided by the utility model, the utility model discloses following technical effects:
By setting arc arc ignition bar, i.e., curved arc ignition bar will draw static contact in the utility model with curved
The static contact of arc bar is in the arc-chutes, due to the channel there are many inside arc-chutes, first is that subdividing the arc, second is that utilizing electric arc
The high pressure draught that high temperature generates, dynamic/static contact is in the arc energy for disconnecting moment generation by going out with the introducing of curved arc ignition bar
Arc chamber blows out electric arc by the certain channel nozzle of arc-chutes.Therefore, curved arc ignition bar can effectively control arc energy
Diffusion, make flashover distance control in minimum range, arc-chutes promoted adequately to extinguish arc energy, reduce arc energy
Dispersion be conducive to the arc extinguishing ability and breaking capacity that improve breaker of plastic casing, increase simultaneously to reduce the ablation of static contact
The service life of product, improves the quality of product.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is that the utility model embodiment static contact arc-striking structure, shield and arc-chutes assemble overall structure diagram；
Fig. 2 is that the utility model embodiment static contact arc-striking structure, shield and arc-chutes assemble overall structure right view；
Fig. 3 is the utility model embodiment static contact arc-striking structure schematic diagram.
Symbol description
First platform 101, first connecting portion 102, the second platform 103, second connecting portion 104, third platform 105, installation
Hole 106, fixation hole 107, contact 2, arc arc ignition bar 3, boss 4, shield 5, arc-chutes 6, soket head cap screw 7.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of striking static contact and its breaker of plastic casing, are connecting breaker of plastic casing
Or cut-off the arc energy that moment generates and fully enter arc-chutes, improve the breaking capacity of breaker of plastic casing.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is that the utility model embodiment static contact arc-striking structure, shield and arc-chutes assemble overall structure diagram, figure
2 be the utility model embodiment static contact arc-striking structure, shield and arc-chutes assemble overall structure right view, and Fig. 3 is that this is practical
New embodiment static contact arc-striking structure schematic diagram, as shown in Figure 1-Figure 3, the static contact includes:
Stationary contact bracket, contact 2, arc arc ignition bar 3, boss 4, shield 5, arc-chutes 6, soket head cap screw 7；
The stationary contact bracket includes the first platform 101, first connecting portion 102, the second platform 103, second connecting portion 104
And third platform 105；First platform 101 is connect by the first connecting portion 102 with second platform 103, and
First platform 101 and the first connecting portion 102 form that Open Side Down angle are obtuse angle, the first connecting portion 101 with
The angle for the opening upwards that second platform 103 is formed is obtuse angle；Second platform 103 also passes through the second connecting portion
104 connect with the third platform 105, and the third platform 105 is located at the top of second platform 103；
The contact 2 is located on the third platform 105；
The boss 4 is between the first connecting portion 102 and second platform 103, the arc arc ignition bar 3
In on the boss 4；
The shield 5 is located at the outside of the second connecting portion, and is connected on the boss 4, by the way that 5 energy of shield is arranged
Static contact ablation is serious when enough reducing the arc energy that dynamic/static contact Contact generates.
The arc-chutes 6 are located at the top of the third platform.
Threaded hole is offered on first platform 101, the soket head cap screw 7 is used for across the threaded hole and the external world
Power supply line connection.
Mounting hole 106 is offered on first platform 101,103 offer fixation hole 107 on second platform, for pacifying
The fixed static contact of dress.
Wherein, above-mentioned static contact is used for and moving contact contacts, and breaker of plastic casing is connected, the arc ignition bar 3 cannot be straight
Arc ignition bar, due to dynamic/static contact disconnect moment generate arc energy it is bigger, curved arc ignition bar is contacted with arc energy
The straight arc ignition bar of area ratio want small, the ablation of arc ignition bar can be reduced.Due to the influence of grid inside arc-chutes, it is bent striking
Bar is among the grid of arc-chutes to be put in, therefore the size of arc ignition bar is required to protrude into the grid of arc-chutes
Between, the material of the arc arc ignition bar 3 and consistent with the material of stationary contact bracket, and arc arc ignition bar is on bending degree
There is certain requirement, curved head should keep there cannot be too big gap with the lower part of arc-chutes grid.
Arc-chutes are introduced by the arc energy that setting arc arc ignition bar 3 can generate dynamic/static contact, principle is: going out
6 bottom of arc chamber be it is logical, some is flowed out from the bottom of arc-chutes 6 for the arc energy of generation, by arc ignition bar 3, by electric arc
Energy is sent into arc-chutes 6, generates the electromagnetism arc blow-out power that induced magnetic field is formed using in arc-chutes 6 grid, arc energy is inhaled
Enter arc-chutes, electric arc is divided into several segments by metal grid, reaches extinguishing electric arc using the nearly cathode effect of electric arc
Purpose.
The utility model still further provides a kind of breaker of plastic casing, and the breaker of plastic casing includes stationary contact described above
Head.
It is had the advantages that using the above-mentioned static contact in the utility model
Due to dynamic/static contact from touch separate during, the gap between two contacts becomes larger from small, in high voltage
Under the action of, the dielectric in gap can be ionized breakdown, form electric arc, after electric arc is formed, the heat of generation can further add
The ionization of acute medium, expands electric arc, these electric arcs make breaker can not disconnecting circuit, by the way that band is arranged on static contact ontology boss
There is curved arc ignition bar, will be with curved arc ignition bar static contact in arc-chutes, the channel that there are many arc-chutes inside, one
It is subdividing the arc, second is that the high pressure draught generated using high arc temperature, dynamic/static contact is logical in the arc energy for disconnecting moment generation
It crosses and introduces arc-chutes with curved arc ignition bar, electric arc is blown out by the certain channel nozzle of arc-chutes.Curved arc ignition bar energy
The diffusion of enough effective control arc energies, makes flying fox distance controlling in minimum range, arc-chutes is promoted adequately to extinguish
Arc energy, reduces the dispersion of arc energy, to reduce the ablation of static contact, is conducive to the disjunction energy for improving breaker of plastic casing
Power and arc extinguishing ability, while the service life of product is increased, improve the quality of product.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. a kind of striking static contact, which is characterized in that the static contact includes:
Stationary contact bracket, contact and arc arc ignition bar；
The stationary contact bracket includes the first platform, first connecting portion, the second platform, second connecting portion and third platform；Institute
It states the first platform and is connect by the first connecting portion with second platform, and first platform and the first connecting portion
Forming Open Side Down angle is obtuse angle, and the angle for the opening upwards that the first connecting portion and second platform are formed is obtuse angle；
Second platform is also connect by the second connecting portion with the third platform, and the third platform is located at described second
The top of platform；
The contact is located on the third platform；
The arc arc ignition bar is between the first connecting portion and second platform.
2. striking static contact according to claim 1, which is characterized in that the static contact further include: boss and shield；
For the boss between the first connecting portion and second platform, the arc arc ignition bar is located at the boss
On；
The shield is located at the outside of the second connecting portion, and is connected on the boss.
3. striking static contact according to claim 1, which is characterized in that the static contact further include: arc-chutes, it is described to go out
Arc chamber is located at the top of the third platform.
4. striking static contact according to claim 1, which is characterized in that the static contact further include: soket head cap screw；Institute
It states and offers threaded hole on the first platform, the soket head cap screw is used to connect across the threaded hole with extraneous power supply line.
5. striking static contact according to claim 1, which is characterized in that offer mounting hole on the first platform, described
Fixation hole is offered on two platforms.
6. a kind of breaker of plastic casing, which is characterized in that the breaker of plastic casing includes described in any one of claim 1-5
Static contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920653791.6U CN209591955U (en) | 2019-05-08 | 2019-05-08 | A kind of striking static contact and its breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920653791.6U CN209591955U (en) | 2019-05-08 | 2019-05-08 | A kind of striking static contact and its breaker of plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209591955U true CN209591955U (en) | 2019-11-05 |
Family
ID=68347075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920653791.6U Active CN209591955U (en) | 2019-05-08 | 2019-05-08 | A kind of striking static contact and its breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209591955U (en) |
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2019
- 2019-05-08 CN CN201920653791.6U patent/CN209591955U/en active Active
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