CN108538686A - A kind of circuit breaker trip unit - Google Patents
A kind of circuit breaker trip unit Download PDFInfo
- Publication number
- CN108538686A CN108538686A CN201710127872.8A CN201710127872A CN108538686A CN 108538686 A CN108538686 A CN 108538686A CN 201710127872 A CN201710127872 A CN 201710127872A CN 108538686 A CN108538686 A CN 108538686A
- Authority
- CN
- China
- Prior art keywords
- contact
- lever
- circuit breaker
- trip unit
- track groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
- H01H71/43—Electrodynamic release mechanisms
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Abstract
A kind of circuit breaker trip unit, it includes contact system (1), contact system (1) is connected with lever mechanism (2), during contact system (1) coupling/disconnection can shifting lever mechanism (2) make operating mechanism (3) dropout semiaxis (301) unlock, it is characterised in that：The one end (101a) of contact system (1) moving contact (101) is equipped with track groove (101a01), lever mechanism (2) includes lever (201), lever (201) is on lever shaft (202), one end of lever (201) is linked in track groove (101a01), and the other end links with dropout semiaxis (301).Disjunction is assisted by adding lever mechanism, the accurate quick release circuit breaker operation mechanism of energy after contact is detached due to electrodynamic repulsion force, it can improve the breaking speed of circuit breaker operation mechanism, avoid the actuation again of dynamic/static contact that breaker is caused to damage, simultaneously by rigid return power, the stability of transmission is increased.
Description
Technical field
The invention belongs to breaker apparatus technical fields, are exactly specifically to be related to a kind of circuit breaker trip unit, Neng Gouyou
Effect shortens the actuation time of breaker, improves the interrupting performance of breaker.
Background technology
Breaker is generally made of contact system, arc quenching system, operating mechanism, buckle releaser, shell etc., and existing low pressure is disconnected
In generation circuit short circuit, dynamic and static contact is under the action of electrodynamic repulsion force for road device, the especially breaker with current-limiting function
It to be separated within the extremely short time and generate electric arc, with the increase of separation distance between dynamic and static contact, under electrodynamic repulsion force is rapid
Drop, when electrodynamic repulsion force is less than touch spring reaction force, dynamic and static contact starts close.It is such close to be commonly called as " contact return
Fall ", harmful effect can be caused to breaker.Such as：Break is extended, restriking for electric arc in arc-chutes is caused, it is serious
Meeting scaling loss breaker, to influence the breaking capacity of breaker.Existing solution is arranged in low capacity breaker
Electromagnet action carrys out quick release circuit breaker operation mechanism, and circuit breaker operation mechanism quick acting is made in short circuit, will move,
Static contact detaches, and " falling of contact " phenomenon occurs again in the contact opened so as to avoid reprimand.But in large capcity breaker by
The size of limitation in space, electromagnet is restricted, and electromagnet is easily saturated, to influence the action of circuit breaker operation mechanism
Speed causes the contact that reprimand is opened to occur " falling of contact " phenomenon again.
Chinese patent 201520592116.9 discloses a kind of circuit breaker trip mechanism, it includes moving contact, moving contact dress
In shaft, movable contact is housed on moving contact one end corresponding with static contact, it is characterised in that：On static contact with movable contact
Corresponding position is equipped with the fixed contact for capableing of coupled/disconnection, and the moving contact other end is connected with lever mechanism, and moving contact exists
Movable contact couples with fixed contact/disconnection during can shifting lever mechanism so that operating mechanism dropout semiaxis is unlocked.The skill
The invention of art scheme assists disjunction by adding lever mechanism, can accurate quick release open circuit after contact is detached due to electrodynamic repulsion force
Device operating mechanism, it can improve the breaking speed of circuit breaker operation mechanism, and the actuation again of dynamic/static contact is avoided to cause open circuit
Device damages.But its lever mechanism provides restoring force by spring, is easy unstability.
Invention content
The purpose of the present invention is be directed to existing large capcity breaker to be easy to happen " falling of contact " in circuit breaker
Phenomenon provides a kind of a kind of breaker of the accurate quick release circuit breaker operation mechanism of energy after contact is detached due to electrodynamic repulsion force
Tripgear is not only able to improve the breaking speed of circuit breaker operation mechanism, the actuation again of dynamic/static contact is avoided to cause open circuit
Device damages, while by rigid return power, increasing the stability of transmission.
Technical solution
In order to achieve the above technical purposes, a kind of circuit breaker trip unit that the present invention designs, it includes contact system, is touched
Head system is connected with lever mechanism, during the contact system coupling/disconnection can shifting lever mechanism make operating mechanism
Dropout semiaxis unlocks, it is characterised in that：
The one end of the contact system moving contact is equipped with track groove, and lever mechanism includes lever, and lever is mounted in lever shaft
On, one end of lever is linked in track groove, and the other end links with dropout semiaxis.
Further, the lever shaft is in shaft.
Further, lever is driven to be rotated around lever shaft by track groove in the moving contact rotation process.
Further, the contact system includes moving contact, and for moving contact in shaft, the moving contact is corresponding with static contact
One end on movable contact is housed, position corresponding with movable contact, which is equipped with, on static contact is capable of coupled/fixed contact for disconnecting,
The moving contact other end is connected with lever mechanism.
Further, the track groove is arc-shaped slot.
Advantageous effect
The present invention provides a kind of circuit breaker trip unit, disjunction is assisted by adding lever mechanism, in contact due to electronic
The accurate quick release circuit breaker operation mechanism of energy after repulsion separation, it can improve the breaking speed of circuit breaker operation mechanism, keep away
The actuation again for exempting from dynamic/static contact causes breaker to damage, while by rigid return power, increasing the stability of transmission.
Description of the drawings
Attached drawing 1 is dynamic/static contact couple state structural schematic diagram in the embodiment of the present invention.
Attached drawing 2 is dynamic/static contact off-state structural schematic diagram in the embodiment of the present invention.
Attached drawing 3 is lever mechanism motion principle structural schematic diagram in the embodiment of the present invention.
Attached drawing 4 is lever mechanism structural schematic diagram in the embodiment of the present invention.
Attached drawing 5 is lever mechanism mounting structure schematic diagram in the embodiment of the present invention.
Specific implementation mode
With reference to the accompanying drawings and examples, it elaborates to the present invention.
Embodiment
As shown in attached drawing 1~5, a kind of circuit breaker trip unit, it includes contact system 1, and the contact system 1 includes dynamic
Contact 101, moving contact 101 are equipped with movable contact in shaft 4 on the one end corresponding with static contact 5 of the moving contact 101
101b, position corresponding with movable contact 101b, which is equipped with, on static contact 5 is capable of coupled/fixed contact 501 for disconnecting, moving contact
101 other ends are connected with lever mechanism 4.The one end 101a that moving contact 101 is connected with lever mechanism 4 is poroid equipped with arc groove
Track groove 101a01, lever mechanism 2 include lever 201, and for lever 201 on lever shaft 202, lever shaft 202 is mounted in shaft 4
On, one end of lever 201 is linked in track groove 101a01, and the other end links with dropout semiaxis 301.
In 101 rotation process of the moving contact by track groove 101a01 drive lever 201 around the rotation of lever shaft 202 to
Realize the linkage with dropout semiaxis 301.
The course of work of the present invention is when arbitrary a piece of moving contact 101 is due to electrodynamic repulsion force and the disconnection of fixed contact 501
Capital shifting lever 201 rotates, and lever 201 stirs the rotation of 3 dropout semiaxis 301 of operating mechanism, and operating mechanism 3 is made to unlock, to
Moving contact 101 is driven further to detach until breaker is in trip position.The present invention provides a kind of circuit breaker trip mechanism, leads to
It crosses and adds lever mechanism auxiliary disjunction, the accurate quick release circuit breaker operation mechanism of energy after contact is detached due to electrodynamic repulsion force,
It can improve the breaking speed of circuit breaker operation mechanism, avoid the actuation again of dynamic/static contact that breaker is caused to damage, simultaneously
By rigid return power, the stability of transmission is increased.
Structure, ratio, size etc. depicted in the present embodiment institute accompanying drawings, only to coordinate specification it is revealed in
Hold, so that those skilled in the art understands and reads, is not limited to the enforceable qualifications of the present invention, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre ", " clockwise ", " counterclockwise " use
Language is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or tune
It is whole, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
Claims (5)
1. a kind of circuit breaker trip unit, it includes contact system (1), and contact system (1) is connected with lever mechanism (2), described
During contact system (1) coupling/disconnection can shifting lever mechanism (2) make operating mechanism (3) dropout semiaxis (301) solve
Lock, it is characterised in that：
The one end (101a) of contact system (1) moving contact (101) is equipped with track groove (101a01), lever mechanism (2) packet
Lever (201) is included, on lever shaft (202), one end of lever (201) is linked in track groove (101a01) lever (201),
The other end links with dropout semiaxis (301).
2. a kind of circuit breaker trip unit as described in claim 1, it is characterised in that：The lever shaft (202) is mounted in shaft
(4) on.
3. a kind of circuit breaker trip unit as described in claim 1, it is characterised in that：Moving contact (101) rotation process
In by track groove (101a01) drive lever (201) around lever shaft (202) rotate.
4. a kind of circuit breaker trip unit as described in claim 1, it is characterised in that：The contact system (1) includes dynamic touches
Head (101), moving contact (101) is in the shaft (4), equipped with moving on the moving contact (101) one end corresponding with static contact (5)
Contact (101b), position corresponding with movable contact (101b), which is equipped with, on static contact (5) is capable of coupled/fixed contact for disconnecting
(501), moving contact (101) other end is connected with lever mechanism (4).
5. a kind of circuit breaker trip unit as described in claim 1, it is characterised in that：The track groove (101a01) is arc
Slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127872.8A CN108538686A (en) | 2017-03-06 | 2017-03-06 | A kind of circuit breaker trip unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127872.8A CN108538686A (en) | 2017-03-06 | 2017-03-06 | A kind of circuit breaker trip unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108538686A true CN108538686A (en) | 2018-09-14 |
Family
ID=63489533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710127872.8A Pending CN108538686A (en) | 2017-03-06 | 2017-03-06 | A kind of circuit breaker trip unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108538686A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163522A (en) * | 2011-04-15 | 2011-08-24 | 浙江科都电气制造有限公司 | Bipolar circuit breaker |
| DE102012203295A1 (en) * | 2012-03-02 | 2013-09-05 | Siemens Aktiengesellschaft | Switch lock for a circuit breaker |
| CN203644706U (en) * | 2013-12-27 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Moving contact repulsion open tripping device for circuit breaker |
| CN104601048A (en) * | 2015-01-22 | 2015-05-06 | 浙江正泰电器股份有限公司 | Operating mechanism of motor starter capable of performing quick breaking |
| CN205487987U (en) * | 2016-01-11 | 2016-08-17 | 浙江正泰电器股份有限公司 | Operation mechanism of small breaker |
| CN106409627A (en) * | 2015-08-03 | 2017-02-15 | 上海良信电器股份有限公司 | Circuit breaker tripping mechanism |
| CN206921770U (en) * | 2017-03-06 | 2018-01-23 | 上海良信电器股份有限公司 | A kind of circuit breaker trip unit |
-
2017
- 2017-03-06 CN CN201710127872.8A patent/CN108538686A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163522A (en) * | 2011-04-15 | 2011-08-24 | 浙江科都电气制造有限公司 | Bipolar circuit breaker |
| DE102012203295A1 (en) * | 2012-03-02 | 2013-09-05 | Siemens Aktiengesellschaft | Switch lock for a circuit breaker |
| CN203644706U (en) * | 2013-12-27 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Moving contact repulsion open tripping device for circuit breaker |
| CN104601048A (en) * | 2015-01-22 | 2015-05-06 | 浙江正泰电器股份有限公司 | Operating mechanism of motor starter capable of performing quick breaking |
| CN106409627A (en) * | 2015-08-03 | 2017-02-15 | 上海良信电器股份有限公司 | Circuit breaker tripping mechanism |
| CN205487987U (en) * | 2016-01-11 | 2016-08-17 | 浙江正泰电器股份有限公司 | Operation mechanism of small breaker |
| CN206921770U (en) * | 2017-03-06 | 2018-01-23 | 上海良信电器股份有限公司 | A kind of circuit breaker trip unit |
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