CN207800529U - Breaker contact system - Google Patents
Breaker contact system Download PDFInfo
- Publication number
- CN207800529U CN207800529U CN201721473252.1U CN201721473252U CN207800529U CN 207800529 U CN207800529 U CN 207800529U CN 201721473252 U CN201721473252 U CN 201721473252U CN 207800529 U CN207800529 U CN 207800529U
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- contact
- arcing
- moving contact
- static
- silver point
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Abstract
The utility model provides a kind of breaker contact system, including mutually matched static contact group and moving contact group, wherein：Static contact group includes static contact busbar, static contact silver point, arcing contact silver point and static contact arc striking piece, and static contact silver point, arcing contact silver point and static contact arc striking piece are set on static contact busbar；Moving contact group includes multiple moving contact main contacts and multiple moving contact arcing contacts, and moving contact main contact contact point is provided on multiple moving contact main contacts and multiple moving contact arcing contacts；Moving contact arcing contact can be contacting and separating with arcing contact silver point；Moving contact main contact contact point can be contacting and separating with static contact silver point.The KA Rms ability that the utility model protects moving contact and static contact to improve product by increasing arcing contact；Play the role of elongation to the electric arc that breaker generates in making process, contributes to the extinguishing of electric arc；Coordinate arcing contact by touch spring, avoids the phenomenon that dynamic and static contact reprimand is opened in resistance test in short-term.
Description
Technical field
The utility model is related to field of circuit breakers, and in particular, to a kind of breaker contact system.
Background technology
Frame circuit breaker in distribution network be used for distribute electric energy and protection circuit and power-supply device from overloading, owe electricity
The harm of the failures such as pressure, short circuit, single-phase earthing, connection and the disjunction of electric energy are mainly the contact separation by dynamic and static contact
To realize the on/off switch of breaker.As known to industry, for contact, breaker bears contact when short circuit current should not be electric
Melting welding is opened and generated to power reprimand；Breaker is resistant in short-term in the contact resistance of the actual use occasion of breaker, dynamic and static contact
Electric current plays a crucial role.Such as：Electrodynamic repulsion force increases, and big to contact precompression is overcome, such mechanism is not also dynamic
Make front contact just to be opened by reprimand, dynamic and static contact will light electric arc under the action of electrodynamic repulsion force, cause the melting welding of contact；Simultaneously
Contact resistance increases, calorific value when can increase the fever of contact system, and then breaker can be caused to bear KA Rms
Increase, causes the melting welding of dynamic and static contact contact.And existing dynamic and static contact mainly realizes open circuit by main contact
The connecting and disconnecting of device, when bearing short circuit current, dynamic and static contact can have the possibility that reprimand is held.On the basis of existing, improve
Electrodynamic repulsion force between the characteristic and the dynamic and static contact of reduction of KA Rms, is all often dynamic and static in entire circuit by reducing
The contact resistance or conductor intrinsic resistance of contact, this just needs the quantity for increasing moving contact contact chip, and increases static contact
Width.And the volume that these changes can all increase breaker makes cost increase.Can have one in breaker resistance test
A phenomenon, i.e. moving contact of breaker reprimand is when opening, and melting welding easily occurs for the contact chip at contact chip edge in parallel, and interior contact
Piece but remains intact.This is because electrodynamic repulsion force suffered by each moving contact piece is of different sizes, electronic reprimand suffered by inner moving contact piece
Power is big, and outer suffered electrodynamic repulsion force is small.Therefore when moving contact reprimand is opened, internal moving contact piece is denounceed prior to external moving contact piece
It opens.When internal moving contact piece reprimand is opened, external moving contact piece by electric current increased dramatically, so external moving contact easily occurs
Melting welding.It can be considered to so that the precompression of internal moving contact piece is more than external moving contact piece
Precompression.But such design method just needs to change the shape of contact chip on moving contact, technique increases so that cost increases.
Based on this present situation, the purpose of this utility model is that a kind of novel breaker contact system of invention.It is keeping
In the case of existing contact constancy of volume, dynamic and static contact respectively increases by one group of arcing contact.In this way in dynamic and static contact, main,
There are one the processes that alternately contact is opened with reprimand, the during which balancing force in contact electrodynamic repulsion force to be improved for arcing contact, suffered by contact
Electrodynamic repulsion force can reduce；Conversely, the electrodynamic repulsion force suffered by contact increases.Active force is not when by repulsion for main, arcing contact
Together, when bearing KA Rms, main, arcing contact will appear the process alternately denounceed and opened, when one of which contact reprimand is opened, separately
One group of contact contacts under the action of touch spring counter-force with static contact, in this way, in the same time, always has one group of contact logical
Therefore electricity when bearing KA Rms, will not denounce out completely between dynamic and static contact, thus improve the resistance in short-term of product
By electric current；In this design process, the increase for touch spring force value can effectively increase contact precompression to make
Obtain dynamic and static contact at the time of contact, the electrodynamic repulsion force of generation, which will not arrive greatly, overcomes contact precompression, avoids breaker in this way and exists
When bearing short circuit current, the phenomenon that contact is denounceed out.A kind of movable contact system as disclosed in Chinese patent CN206194553,
The inside describes two panels contact chip among moving contact and increases arcing contact.Although can also play increase tolerance electricity in short-term to a certain extent
The effect of stream, still, effect is less apparent, and there are two types of potential disadvantages to exist：1. coming for the contact chip that moving contact is 10
It says, only increases two panels arcing contact, the effect unobvious in terms of changing KA Rms；2. if arcing contact is arranged on moving contact
It mismatches arcing contact on static contact to act, does not have the effect for reducing contact resistance not only, breaker is bearing short-circuit electricity instead
Should be main, the arcing contact process that alternately contact is opened with reprimand when stream, in dynamic and static contact, but due to not having on static contact
Arcing contact is set, so can be contacted simultaneously in same time master, arcing contact, so not only without reducing dynamic and static contact electricity
Resistance causes dynamic and static contact melting welding even to be burnt instead so that contact resistance bigger, contact calorific value is excessive.The utility model is adopted
It takes dynamic and static contact that main, arcing contact mode is all set, arcing contact is set on the contact chip of the centre of moving contact；On static contact
It is provided with arcing contact on arc striking piece and busbar also by changing, the contact surface of dynamic and static contact can be increased in this way, reduces contact
Resistance, breaker when bearing short circuit current, the same time always have one group of contact be contact, play well in this way it is dynamic,
There are one the states that alternately contact is opened with reprimand for static contact, when also avoiding dynamic and static contact, main, arcing contact on dynamic and static contact
The phenomenon that being permanently connected to.
Utility model content
For the defects in the prior art, the purpose of this utility model is to provide a kind of breaker contact system.
According to a kind of breaker contact system provided by the utility model, including mutually matched static contact group and moving contact
Group, wherein：
The static contact group includes static contact busbar, static contact silver point, arcing contact silver point and static contact arc striking piece, described
Static contact silver point, arcing contact silver point and static contact arc striking piece are set on the static contact busbar；
The moving contact group includes multiple moving contact main contacts and multiple moving contact arcing contacts, and the multiple moving contact master touches
It is provided with moving contact main contact contact point on head and multiple moving contact arcing contacts；
The moving contact arcing contact can be contacting and separating with arcing contact silver point；
The moving contact main contact contact point can be contacting and separating with static contact silver point.
Preferably, it is provided with the first stationary contact hook plate between the static contact busbar and the static contact silver point, described
The second stationary contact hook plate is provided on one stationary contact hook plate, the second stationary contact hook plate is around the static contact arc striking piece.
Preferably, the multiple moving contact main contact and multiple moving contact arcing contacts are set in same shaft and around same
One shaft rotates.
Preferably, the multiple moving contact main contact is parallel with multiple moving contact arcing contacts is arranged side by side, the multiple dynamic
Contact arcing contact is distributed in middle part, and the multiple moving contact main contact is distributed in both sides.
Preferably, the length of the static contact silver point is more than the multiple moving contact main contact and multiple moving contact arcing contacts
Parallel length arranged side by side；The length of the arcing contact silver point is more than the parallel length arranged side by side of multiple moving contact arcing contacts
Degree.
Preferably, the upper side of the moving contact arcing contact is provided with chamfering, and the chamfering can be with the arcing contact
Silver point is contacting and separating.
Preferably, further include that moving contact feeler is supported, the both sides that the moving contact feeler is supported are equipped with side plate, described more
A moving contact main contact and multiple moving contact arcing contacts are arranged by shaft on the side plate；In the moving contact feeler is supported
It is provided with the inside groove for installing touch spring, multiple moving contact main contacts and multiple moving contact arcing contacts are connected by touch spring
Connect the inside groove.
Compared with prior art, the utility model has following advantageous effect：
1, the utility model increases arcing contact simultaneously in static contact group and moving contact group so that static contact group and moving contact
In KA Rms, moving contact main contact and moving contact arcing contact will appear one and alternately denounce the phenomenon that opening group, improve
The KA Rms ability of product；
2, the utility model not only protects moving contact and static contact by increasing arcing contact, but also is closing a floodgate to breaker
The electric arc generated in the process can also play the role of elongation, contribute to the extinguishing of electric arc；
3, the utility model coordinates arcing contact by touch spring, increases the precompression between dynamic and static contact, reduces
The phenomenon that dynamic and static contact electrodynamic repulsion force is avoided in resistance test in short-term, and dynamic and static contact reprimand is opened.
Description of the drawings
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 structural schematic diagram of the static contact group of the utility model；
Fig. 2 is the structural schematic diagram of the moving contact group of the utility model；
Fig. 3 is the sectional view of the moving contact group of the utility model.
It is shown in figure：
Static contact busbar 1
Static contact silver point 2
Arcing contact silver point 3
Static contact arc striking piece 4
First stationary contact hook plate 5
Second stationary contact hook plate 6
Moving contact main contact contact point 7
Moving contact arcing contact 8
Moving contact main contact 9
Shaft 10
Moving contact contact supports 11
Touch spring 12
Specific implementation mode
The utility model is described in detail with reference to specific embodiment.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 belong to the scope of protection of the utility model.
In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or member
Part must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to the present invention/utility model
Limitation.
As shown in Figure 1 to Figure 3, according to breaker contact system provided by the utility model, including it is static contact busbar 1, quiet
Contact silver point 2, arcing contact silver point 3, static contact arc striking piece 4, the first stationary contact hook plate 5, the second stationary contact hook plate 6, moving contact master
Contact point 7, moving contact arcing contact 8, moving contact main contact 9, shaft 10, moving contact contact support 11 and touch spring
12, wherein：
Static contact silver point 2 and arcing contact silver point 3 are fastenedly connected on the static contact busbar 1, and static contact arc striking piece 4 is logical
Rivet is crossed on static contact busbar 1, when riveting, rivet can not be more than the end face of static contact arc striking piece 4；The static contact
The electric arc that static contact silver point 2 and arcing contact silver point 3 generate can be introduced arc-control device by arc striking piece 4；Static contact arc striking piece 4 and quiet
It is provided with the first stationary contact hook plate 5 between contact busbar 1, the second stationary contact hook plate 6, institute are provided on the first stationary contact hook plate 5
6 U-shaped structure of the second stationary contact hook plate is stated, the second stationary contact hook plate 6 is around the static contact arc striking piece 4.The first stationary contact headrest
Plate 5 and the second stationary contact hook plate 6 play insulating effect, can effective protection static contact busbar 1, extend making for static contact busbar 1
Use the service life.
As preference, the moving contact group includes four moving contact main contacts 9 and three moving contact arcing contacts 8, described
It is provided with moving contact main contact contact point 7, moving contact main contact on four moving contact main contacts 9 and three moving contact arcing contacts 8
Contact point 7 is connect with moving contact main contact 9 and moving contact arcing contact 8 in the form of welding；Moving contact main contact 9 and moving contact
8 side by side parallel of arcing contact is arranged in the same shaft and is rotated around same shaft, during three moving contact arcing contacts 8 are distributed in
Between, four moving contact main contacts 9 are evenly distributed in both sides, and the upper side of moving contact main contact 9 is arcuate flanks；Moving contact arc
The upper side of contact 8 is provided with chamfering, and the chamfering can be contacting and separating with the arcing contact silver point 3.The moving contact
Group further includes that moving contact feeler supports 11, and the moving contact feeler supports 11 both sides to be equipped with side plate, four moving contacts
Main contact 9 and three moving contact arcing contacts 8 are arranged by shaft on the side plate；The moving contact feeler supports setting in 11
It is useful for the inside groove of installation touch spring 12, four moving contact main contacts 9 and three moving contact arcing contacts 8 pass through touch spring 12
Connect the inside groove.
The static contact silver point 2 and arcing contact silver point 3 of static contact group are respectively cooperating with 9 He of moving contact main contact of moving contact group
Moving contact arcing contact 8, and the length of the static contact silver point 2 is more than four moving contact main contacts 9 and three moving contacts
The parallel length arranged side by side of arcing contact 8；It is parallel side by side that the length of the arcing contact silver point 3 is more than three moving contact arcing contacts 8
The length of setting.The distance between static contact silver point 2 and arcing contact silver point 3 are equal to the chamfering and moving contact of moving contact arcing contact 8
The distance of main contact contact point 7.
When moving contact group and static contact group contact, static contact silver point 2 and moving contact main contact 9,3 and of arcing contact silver point
The process that moving contact arcing contact 8 is alternately contacted there are one and reprimand is opened, when one of which contact reprimand is opened, another group of contact is touching
It is contacted under the action of head counter spring force, in this way, in the same time, always there is one group of contact being powered, and then improve product
KA Rms.
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 change 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 (6)
1. a kind of breaker contact system, which is characterized in that including mutually matched static contact group and moving contact group, wherein：
The static contact group includes static contact busbar, static contact silver point, arcing contact silver point and static contact arc striking piece, the stationary contact
Head silver point, arcing contact silver point and static contact arc striking piece are set on the static contact busbar；
The moving contact group includes multiple moving contact main contacts and multiple moving contact arcing contacts, the multiple moving contact main contact and
Moving contact main contact contact point is provided on multiple moving contact arcing contacts；
The moving contact arcing contact can be contacting and separating with arcing contact silver point；
The moving contact main contact contact point can be contacting and separating with static contact silver point；
Further include that moving contact feeler is supported, the both sides that the moving contact feeler is supported are equipped with side plate, the multiple moving contact master
Contact and multiple moving contact arcing contacts are arranged by shaft on the side plate；It is provided with and is used in the moving contact feeler support
The inside groove of touch spring, multiple moving contact main contacts and multiple moving contact arcing contacts are installed to connect in described by touch spring
Slot.
2. breaker contact system according to claim 1, which is characterized in that the static contact busbar and the static contact
It is provided with the first stationary contact hook plate between silver point, is provided with the second stationary contact hook plate on the first stationary contact hook plate, described
Two stationary contact hook plates are around the static contact arc striking piece.
3. breaker contact system according to claim 1, which is characterized in that the multiple moving contact main contact and multiple
Moving contact arcing contact is set in same shaft and is rotated around same shaft.
4. breaker contact system according to claim 3, which is characterized in that the multiple moving contact main contact and multiple
Moving contact arcing contact is parallel to be arranged side by side, and the multiple moving contact arcing contact is distributed in middle part, the multiple moving contact main contact
It is distributed in both sides.
5. breaker contact system according to claim 4, which is characterized in that the length of the static contact silver point is more than institute
State multiple moving contact main contacts length arranged side by side parallel with multiple moving contact arcing contacts；The length of the arcing contact silver point is big
In the parallel length arranged side by side of multiple moving contact arcing contacts.
6. breaker contact system according to claim 1, which is characterized in that the upper side of the moving contact arcing contact
It is provided with chamfering, the chamfering can be contacting and separating with the arcing contact silver point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473252.1U CN207800529U (en) | 2017-11-06 | 2017-11-06 | Breaker contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473252.1U CN207800529U (en) | 2017-11-06 | 2017-11-06 | Breaker contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207800529U true CN207800529U (en) | 2018-08-31 |
Family
ID=63285247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721473252.1U Active CN207800529U (en) | 2017-11-06 | 2017-11-06 | Breaker contact system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207800529U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375560A (en) * | 2018-12-14 | 2019-02-22 | 二三电器（上海）有限公司 | Split type intelligent controller |
| CN111341614A (en) * | 2018-12-18 | 2020-06-26 | 上海良信电器股份有限公司 | Contact system of low-voltage circuit breaker |
| CN114496643A (en) * | 2020-10-25 | 2022-05-13 | Abb瑞士股份有限公司 | Interrupter for direct current interruption |
| CN114678239A (en) * | 2021-12-24 | 2022-06-28 | 河南平高通用电气有限公司 | Moving side contact assembly of direct current circuit breaker and direct current circuit breaker |
-
2017
- 2017-11-06 CN CN201721473252.1U patent/CN207800529U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375560A (en) * | 2018-12-14 | 2019-02-22 | 二三电器（上海）有限公司 | Split type intelligent controller |
| CN109375560B (en) * | 2018-12-14 | 2023-10-20 | 二一三电器(上海)有限公司 | Split intelligent controller |
| CN111341614A (en) * | 2018-12-18 | 2020-06-26 | 上海良信电器股份有限公司 | Contact system of low-voltage circuit breaker |
| CN114496643A (en) * | 2020-10-25 | 2022-05-13 | Abb瑞士股份有限公司 | Interrupter for direct current interruption |
| CN114678239A (en) * | 2021-12-24 | 2022-06-28 | 河南平高通用电气有限公司 | Moving side contact assembly of direct current circuit breaker and direct current circuit breaker |
| CN114678239B (en) * | 2021-12-24 | 2023-09-29 | 河南平高通用电气有限公司 | Moving side contact assembly of direct current breaker and direct current breaker |
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| GR01 | Patent grant |