CN209591953U - Breaker and its structure of contact terminal - Google Patents
Breaker and its structure of contact terminal Download PDFInfo
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- CN209591953U CN209591953U CN201920325414.XU CN201920325414U CN209591953U CN 209591953 U CN209591953 U CN 209591953U CN 201920325414 U CN201920325414 U CN 201920325414U CN 209591953 U CN209591953 U CN 209591953U
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- contact
- moving contact
- arc
- breaker
- chutes
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Abstract
The utility model provides a kind of breaker contact structure, including arc-chutes, moving contact and static contact, the end that moving contact and static contact match is respectively positioned in arc-chutes, moving contact is engaged with static contact or disjunction, for controlling the on-off of breaker circuit, arc extinguishing grid pieces group is provided in arc-chutes, moving contact includes moving contact plate and moving contact run-on tab, moving contact run-on tab is connected with moving contact plate and bends along the direction close to arc extinguishing grid pieces group, moving contact silver point is provided on moving contact plate, static contact includes stationary contact head plate, static contact silver point is provided in stationary contact head plate, moving contact silver point, moving contact run-on tab and static contact silver point match work.The breaker contact structure of the utility model, electric arc is able to enter the intermediate region of arc extinguishing grid pieces group, the electric arc that short circuit generates is rapidly introduced into arc-chutes in a short time, contact area, breaker closing and the separating brake for increasing structure of contact terminal are reliable, structure is simple, the operation is stable.
Description
Technical field
The utility model relates to breaker technical fields, and in particular, to a kind of breaker and its structure of contact terminal.
Background technique
Breaker is the electric current referred to close, carry and cut-off under normal loop condition and can close, when defined
Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.Breaker is divided into high-voltage circuitbreaker by its use scope
With low-voltage circuit breaker.
Low-voltage circuit breaker is also known as automatic air-break switch or automatic air circuit breaker, it is a kind of existing manual switch effect,
It can carry out the electric appliance of decompression, under-voltage, overload and short-circuit protection automatically again.It can be used to distribute electric energy, infrequently start asynchronous
Motor protects the implementations such as power circuit and motor, the energy when serious overload or short circuit and the failures such as under-voltage occur
Automatic shutdown circuit, function are equivalent to Fuse switch and combine with underheat relay etc. is crossed, and in disjunction fault current
It does not need change components generally afterwards, has had been widely used.
When short trouble occurs for route, breaker is based on defencive function, disconnects the circuit for having short-circuit current, at this moment
Short circuit current is excessive, by formula Q=I2RT, when contact of breaker disconnects, the electric arc of powerful energy is generated, produced by arc voltage
Harm it is serious, temperature is up to several thousand degrees celsius, gently then damages equipment, heavy then can produce explosion, leads to fire, threatens
The safety of life and property.Especially in petroleum, power industry, with greater need for it is additional note that due to industry particularity, more
It is easy to cause accident, the even injures and deaths of personnel.In power industry, device for switching can generate electric arc, because its temperature is up to
Several thousand degrees celsius can burn out contact, even result in contact melting welding.If electric arc does not extinguish immediately, it is possible to burn operator,
Burning apparatus, or even lead to fire.There is the electric appliance of contact to be contemplated that its arc extinguishing problem, electric arc should faster extinguishing, to electricity
Device damage is just smaller.
Application No. is the Chinese invention patents of 201710372078.X to disclose a kind of moving contact, comprising: arranged side by side
Multiple moving contact pieces, one end of each moving contact piece are contact end, and the other end of each moving contact piece is the first connecting pin；
First connecting pin of multiple flexible conductive elements, each moving contact piece is connected separately at least one described compliant conductive
Part；Line bank is made of more than one sub- line bank stacking, and the line bank has second connection end, is connected to each institute
At least one the described flexible conductive element for stating moving contact on piece is connected with the second connection end.But the invention can not be in short-term
In by short circuit generate electric arc be rapidly introduced into arc-chutes, and structure of contact terminal contact area less, breaker closing and
Separating brake is unreliable.
Therefore, it is necessary to which designing one kind can be rapidly introduced into the electric arc that short circuit generates in arc-chutes in a short time, increase
The contact area of big contact structure, breaker closing and separating brake are reliable, structure is simple, the breaker of the operation is stable and its contact knot
Structure.
Utility model content
For the defects in the prior art, the purpose of the utility model is to provide a kind of breaker, the utility model is short
The electric arc that short circuit generates can be rapidly introduced into arc-chutes in time, the contact area that increases structure of contact terminal, breaker closing
With separating brake is reliable, structure is simple, the operation is stable.
It is described according to a kind of breaker contact structure provided by the utility model, including arc-chutes, moving contact and static contact
The end that moving contact and the static contact match is respectively positioned in the arc-chutes, the moving contact engaged with the static contact or
Disjunction, for controlling the on-off of breaker circuit,
Arc extinguishing grid pieces group is provided in the arc-chutes,
The moving contact includes moving contact plate and moving contact run-on tab, the moving contact run-on tab and the moving contact plate phase
It connects and is folded upward at along the direction close to the arc extinguishing grid pieces group, moving contact silver point is provided on moving contact plate,
The static contact includes stationary contact head plate, is provided with static contact silver point in the stationary contact head plate, the moving contact silver point,
The moving contact run-on tab and the static contact silver point match work, so that electric arc is able to enter in the arc extinguishing grid pieces group
Between region.
Further, the bending angle α between the moving contact run-on tab and the moving contact plate is greater than 90 °.
Preferably, the length of the moving contact plate is greater than the length of the moving contact run-on tab.
Preferably, the moving contact plate is structure as a whole with the moving contact run-on tab.
Further, the arc extinguishing grid pieces group includes multiple arc extinguishing grid pieces, and multiple arc extinguishing grid pieces are equidistantly set
In arc-chutes.
Preferably, multiple arc extinguishing grid pieces fan-shaped distribution in the arc-chutes.
Further, multiple arc extinguishing grid pieces are in the arc-chutes along fan-shaped point of the short transverse of the arc-chutes
Cloth.
Further, the arc extinguishing grid pieces are metal arc extinguishing grid pieces.
Further, the moving contact and static contact are corresponding, and the moving contact and the static contact are multiple.
Correspondingly, the invention also discloses a kind of breaker, the breaker includes breaker touching described above
Header structure.
Compared with prior art, the utility model have it is following the utility model has the advantages that
(1) breaker contact structure of the utility model, moving contact run-on tab are connected with moving contact plate and along close to institutes
The direction for stating arc extinguishing grid pieces group is folded upward at, and moving contact silver point, moving contact run-on tab and static contact silver point match work, moves touching
Bending angle α between head run-on tab and moving contact plate is greater than 90 °, so that electric arc is able to enter the middle area of arc extinguishing grid pieces group
The electric arc that short circuit generates can be rapidly introduced into arc-chutes by domain in a short time；
(2) breaker contact structure of the utility model, the length of moving contact plate are greater than the length of moving contact run-on tab, move
Contact plate is matched with moving contact run-on tab, enable generate electric arc enter in arc-chutes close to rectilinear path, electric arc into
Diffusion, the electric arc of diffusion can sufficiently be in contact with arc extinguishing grid pieces after entering in arc-chutes；
(3) breaker contact structure of the utility model, the electric arc of generation are able to enter the intermediate region of arc extinguishing grid pieces group,
Electric arc and arc extinguishing grid pieces contact area are big, be easy extinguish, advantageous can prevent electric arc be gathered in arc extinguishing grid pieces group upper end or
Person lower end avoids the bottom that electric arc is largely gathered in arc-chutes, prevents from burning dynamic/static contact, is effectively protected contact knot
Structure extends the service life of breaker；
(4) breaker contact structure of the utility model, moving contact plate are structure as a whole with moving contact run-on tab, increase touching
The contact area of header structure enhances the reliability and stability of breaker closing and separating brake；
(5) breaker contact structure of the utility model, structure is simple, compact, compact, reliable operation, stabilization, system
It makes low with maintenance cost, can be widely used on a variety of breakers, it is applied widely, it is versatile.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon.
Fig. 1 is the moving contact of the utility model and the structural schematic diagram of static contact；
Fig. 2 is the structural schematic diagram of the moving contact of the utility model；
Fig. 3 is the schematic diagram of the breaker contact structure of the utility model；
Fig. 4 is the schematic diagram that electric arc enters arc-chutes.
Wherein, corresponding appended drawing reference in figure are as follows: 1- arc-chutes, 11- arc extinguishing grid pieces group, 111- arc extinguishing grid pieces, the dynamic touching of 2-
Head, 21- moving contact plate, 211- moving contact silver point, 22- moving contact run-on tab, 3- static contact, 31- stationary contact head plate, 311- static contact
Silver point.
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, several changes and improvements can also be made.
These are all within the protection scope of the present invention.
Please refer to Fig. 1-4.As shown in Figs 1-4, the utility model embodiment provides a kind of breaker contact structure, including
Arc-chutes 1, moving contact 2 and static contact 3, the end that the moving contact 2 and the static contact 3 match are respectively positioned on the arc-chutes
In 1, the moving contact 2 is engaged with the static contact 3 or disjunction, for controlling the on-off of breaker circuit,
It is provided with arc extinguishing grid pieces group 11 in the arc-chutes 1,
The moving contact 2 includes moving contact plate 21 and moving contact run-on tab 22, and the moving contact run-on tab 22 is moved with described
Contact plate 21 is connected and is folded upward at along the direction close to the arc extinguishing grid pieces group 11, is provided on the moving contact plate 21 dynamic
Contact silver point 211,
The static contact 3 includes stationary contact head plate 31, and static contact silver point 311 is provided in the stationary contact head plate 31, described dynamic
Contact silver point 211, the moving contact run-on tab 22 and the static contact silver point 311 match work, so that electric arc is able to enter
The intermediate region of the arc extinguishing grid pieces group 11.
Bending angle α between the moving contact run-on tab 22 and the moving contact plate 21 is greater than 90 °.Moving contact run-on tab
Bending angle α between 22 and moving contact plate 21 is greater than 90 °, so that electric arc is able to enter the intermediate region of arc extinguishing grid pieces group 11,
The electric arc that short circuit generates can be rapidly introduced into arc-chutes 1 in a short time；
The length of the moving contact plate 21 is greater than the length of the moving contact run-on tab 22.The length of moving contact plate 21 is greater than
The length of moving contact run-on tab 22, moving contact plate 21 are matched with moving contact run-on tab 22, and the electric arc generated is approached
Rectilinear path enters in arc-chutes 1, diffusion after electric arc enters in arc-chutes 1, the electric arc of diffusion can sufficiently with arc extinguishing grid pieces 111
It is in contact；The electric arc of generation is able to enter the intermediate region of arc extinguishing grid pieces group 11, and electric arc and 111 contact area of arc extinguishing grid pieces are big,
It is easy to extinguish, electric arc advantageous can be prevented to be gathered in the upper end or lower end of arc extinguishing grid pieces group 11, electric arc is avoided and largely gather
Collection prevents from burning contact, is effectively protected structure of contact terminal, extend the service life of breaker in the bottom of arc-chutes 1；
The moving contact plate 21 is structure as a whole with the moving contact run-on tab 22.
The arc extinguishing grid pieces group 11 includes multiple arc extinguishing grid pieces 111, and multiple arc extinguishing grid pieces 111 are equidistantly located at
In arc-chutes 1.
The fan-shaped distribution in the arc-chutes 1 of multiple arc extinguishing grid pieces 111.
Multiple arc extinguishing grid pieces 111 are in the arc-chutes 1 along the fan-shaped distribution of short transverse of the arc-chutes 1.
The arc extinguishing grid pieces 111 are metal arc extinguishing grid pieces 111.
The moving contact 2 and static contact 3 are corresponding, and the moving contact 2 and the static contact 3 are multiple.
Correspondingly, the invention also discloses a kind of breaker, the breaker includes breaker touching described above
Header structure.
In conclusion the breaker contact structure of the utility model, moving contact run-on tab is connected with moving contact plate and edge
Direction close to the arc extinguishing grid pieces group is folded upward at, and moving contact silver point, moving contact run-on tab and static contact silver point match work
Make, the bending angle α between moving contact run-on tab and moving contact plate is greater than 90 °, so that electric arc is able to enter arc extinguishing grid pieces group
The electric arc that short circuit generates can be rapidly introduced into arc-chutes by intermediate region in a short time；The length of moving contact plate is greater than dynamic
The length of contact run-on tab, moving contact plate are matched with moving contact run-on tab, enable the electric arc generated close to rectilinear path
Into in arc-chutes, diffusion after electric arc enters in arc-chutes, the electric arc of diffusion can sufficiently be in contact with arc extinguishing grid pieces；It generates
Electric arc is able to enter the intermediate region of arc extinguishing grid pieces group, and electric arc and arc extinguishing grid pieces contact area are big, is easy to extinguish, can be advantageous
It prevents electric arc to be gathered in the upper end or lower end of arc extinguishing grid pieces group, avoids the bottom that electric arc is largely gathered in arc-chutes, prevent
Dynamic/static contact is burnt, structure of contact terminal is effectively protected, extends the service life of breaker；Moving contact plate draws with moving contact
Arc plate is structure as a whole, and increases the contact area of structure of contact terminal, enhances the reliability and stability of breaker closing and separating brake；
Structure is simple, compact, compact, reliable operation, stabilization, and manufacture is low with maintenance cost, can be widely used in a variety of open circuits
It is applied widely on device, it is versatile.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims,
This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily combined with each other.
Claims (10)
1. a kind of breaker contact structure, which is characterized in that described dynamic including arc-chutes (1), moving contact (2) and static contact (3)
The end that contact (2) and the static contact (3) match is respectively positioned in the arc-chutes (1), the moving contact (2) with it is described quiet
Contact (3) engagement or disjunction, for controlling the on-off of breaker circuit,
Arc extinguishing grid pieces group (11) are provided in the arc-chutes (1),
The moving contact (2) includes moving contact plate (21) and moving contact run-on tab (22), the moving contact run-on tab (22) and institute
Moving contact plate (21) is stated to be connected and be folded upward at along the direction close to the arc extinguishing grid pieces group (11), the moving contact plate (21)
On be provided with moving contact silver point (211),
The static contact (3) includes stationary contact head plate (31), is provided with static contact silver point (311), institute on the stationary contact head plate (31)
It states moving contact silver point (211), the moving contact run-on tab (22) and the static contact silver point (311) and matches work, so that electric
Arc is able to enter the intermediate region of the arc extinguishing grid pieces group (11).
2. breaker contact structure according to claim 1, which is characterized in that the moving contact run-on tab (22) with it is described
Bending angle α between moving contact plate (21) is greater than 90 °.
3. breaker contact structure according to claim 2, which is characterized in that the length of the moving contact plate (21) is greater than
The length of the moving contact run-on tab (22).
4. breaker contact structure according to claim 3, which is characterized in that the moving contact plate (21) and the dynamic touching
Head run-on tab (22) is structure as a whole.
5. breaker contact structure according to claim 1, which is characterized in that the arc extinguishing grid pieces group (11) includes multiple
The arc extinguishing grid pieces (111), multiple arc extinguishing grid pieces (111) are equidistantly located in arc-chutes (1).
6. breaker contact structure according to claim 5, which is characterized in that multiple arc extinguishing grid pieces (111) are in institute
State fan-shaped distribution in arc-chutes (1).
7. breaker contact structure according to claim 6, which is characterized in that multiple arc extinguishing grid pieces (111) are in institute
State the fan-shaped distribution of short transverse in arc-chutes (1) along the arc-chutes (1).
8. breaker contact structure according to claim 7, which is characterized in that the arc extinguishing grid pieces (111) are gone out for metal
Arc grid (111).
9. breaker contact structure according to claim 1, which is characterized in that the moving contact (2) and static contact (3) phase
Corresponding, the moving contact (2) and the static contact (3) are multiple.
10. a kind of breaker, which is characterized in that the breaker includes such as the described in any item breaker touchings of claim 1-9
Header structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325414.XU CN209591953U (en) | 2019-03-14 | 2019-03-14 | Breaker and its structure of contact terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325414.XU CN209591953U (en) | 2019-03-14 | 2019-03-14 | Breaker and its structure of contact terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209591953U true CN209591953U (en) | 2019-11-05 |
Family
ID=68374130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920325414.XU Active CN209591953U (en) | 2019-03-14 | 2019-03-14 | Breaker and its structure of contact terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209591953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745072A (en) * | 2020-05-28 | 2021-12-03 | 上海良信电器股份有限公司 | Arc extinguishing mechanism and circuit breaker |
-
2019
- 2019-03-14 CN CN201920325414.XU patent/CN209591953U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745072A (en) * | 2020-05-28 | 2021-12-03 | 上海良信电器股份有限公司 | Arc extinguishing mechanism and circuit breaker |
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