CN203644706U - Moving contact repulsion open tripping device for circuit breaker - Google Patents
Moving contact repulsion open tripping device for circuit breaker Download PDFInfo
- Publication number
- CN203644706U CN203644706U CN201320870809.0U CN201320870809U CN203644706U CN 203644706 U CN203644706 U CN 203644706U CN 201320870809 U CN201320870809 U CN 201320870809U CN 203644706 U CN203644706 U CN 203644706U
- Authority
- CN
- China
- Prior art keywords
- moving contact
- boss
- circuit breaker
- operating mechanism
- contact
- 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.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000005452 bending Methods 0.000 claims abstract description 15
- 230000005520 electrodynamics Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Breakers (AREA)
Abstract
The utility model discloses a moving contact repulsion open tripping device for a circuit breaker and belongs to the technical field of low voltage electrical apparatuses. The circuit breaker comprises an operating mechanism, a rotary shaft, a moving contact and a static contact. The moving contact repulsion open tripping device comprises a swing rod; one end of the swing rod in the length direction is provided with a bending rod, the middle is provided with a boss, and the other end is provided with an actuating surface; the bending rod is inserted in the hole in the moving contact; the boss is accommodated inside the groove of the rotary shaft pivotally and slidably; and the actuating surface can be coupled with a tripping half shaft of the operating mechanism. When the moving contact performs an action of being away from the static contact due to an electric repulsion force, the moving contact drives the bending rod and drives the boss in the middle of the swing rod to slide and rotate inside the groove, the actuating surface at the other end of the swing rod pushes the tripping half shaft to rotate, and the operating mechanism is unlocked. Falling back of the moving contact can be effectively prevented, and the breaking performances of the circuit breaker can be improved.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and the moving contact that is specifically related to a kind of circuit breaker is scolded out tripgear.
Background technology
Existing low-voltage circuit breaker, particularly there is the circuit breaker of current-limiting function in the time producing short circuit, its dynamic and static contact will separate and produce electric arc under electrodynamic effect within the extremely short time, along with the increase of distance of separation between dynamic and static contact, electrodynamic repulsion force declines rapidly, in the time that electrodynamic repulsion force is less than touch spring counter-force, dynamic and static contact starts close.This kind near being called " falling of contact " by industry, and be acknowledged as and can cause bad impact.For example: extend break-time, caused restriking of electric arc in arc control device, serious meeting scaling loss circuit breaker, thus have influence on the breaking capacity of circuit breaker.In low capacity circuit breaker, the general electromagnet that adopts moves quick release circuit breaker operation mechanism, in the time of short circuit, make circuit breaker operation mechanism quick acting, dynamic and static contact is separated, thereby avoided the contact of scolding out again to occur " falling of contact " phenomenon.But due to the restriction in space, the size of electromagnet is restricted in large capcity breaker, and electromagnet is very easily saturated, thereby affects the responsiveness of circuit breaker operation mechanism, cause the contact of scolding out again to occur " falling of contact " phenomenon.Therefore for large capcity breaker, need a kind of after contact separates due to electrodynamic repulsion force the accurate tripgear of quick release circuit breaker operation mechanism.
Summary of the invention
The purpose of this utility model is to provide a kind of moving contact of circuit breaker that can be using electrodynamic repulsion force as power source to scold out tripgear, it does not need to use transducer or electromagnet, realize the fast accurate tripping operation of circuit breaker by simple mechanical movement, prevent " falling of the contact " phenomenon occurring in prior art, improve the interrupting performance of circuit breaker.
The purpose of this utility model reaches like this, a kind of moving contact of circuit breaker is scolded out tripgear, described circuit breaker comprises operating mechanism, rotating shaft, be contained in pivotally in rotating shaft and by rotating shaft and can realize the moving contact being connected with operating mechanism, and with the fixed contact of moving contact coupling, described moving contact scolds out tripgear to comprise a fork, described fork has bending bar in one end of length direction, middle part has boss, the other end has actuator surface, wherein: described bending bar is plugged in the hole on moving contact rotationally, described boss is contained in the groove of rotating shaft pivotly and slidably, described actuator surface can be coupled with the dropout semiaxis of operating mechanism, in the time that moving contact is done away from the motion of fixed contact due to electrodynamic repulsion force, drive bending bar by moving contact, thereby the boss at drive fork middle part slides and rotates in described groove, make the actuator surface of the fork other end promote described dropout semiaxis rotation, make operating mechanism release.
In a specific embodiment of the present utility model, on described dropout semiaxis, there is boss and hemi-pinacoid, described boss contacts with described actuator surface, and promotes described boss by actuator surface, and the semiaxis that makes to thread off rotates to realize the release of operating mechanism.
The utility model is owing to adopting after said structure, the beneficial effect having: in the time having short circuit current to pass through, moving contact is scolded out, scold out tripgear to act on operating mechanism when scolding while reaching certain altitude by moving contact, make operating mechanism release, at this moment rotating shaft rotates counterclockwise fast and drives moving contact away from fixed contact under mechanism's spring action, thereby can effectively prevent the falling of moving contact, improves the interrupting performance of circuit breaker.
Brief description of the drawings
Fig. 1 is the planar structure schematic diagram of an embodiment of the present utility model.
Fig. 2 is the planar structure schematic diagram of an embodiment of the present utility model.
Fig. 3 is the perspective view of fork described in the utility model.
Fig. 4 is the three-dimensional exploded view of operating mechanism described in the utility model in the time of trip free state.
In figure: 1. circuit breaker; 10. moving contact, 10a. hole, the 10b. moving contact centre of gyration; 20. fixed contacts; Connecting rod, 306. lower links, 307. trippings, 308. levers, 309. main springs on 30. operating mechanisms, 301. dropout semiaxis, 301a. boss, 301b. hemi-pinacoid, 302. first snap closes, 302a. hasp face, 303. second snap closes, 304. cheeks, 305.; 40. rotating shafts, 40a. groove; 50. forks, 50a. boss, 50b. bending bar, 50c. actuator surface; 60. springs.
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, anyly changes in the form rather than substance and all should be considered as protection range of the present utility model according to the utility model design.
Refer to Fig. 1, Fig. 2 and in conjunction with Fig. 3, the utility model relates to a kind of moving contact of circuit breaker and scolds out tripgear, described circuit breaker 1 comprises operating mechanism 30, rotating shaft 40, the fixed contact 20 that is contained in the moving contact 10 in rotating shaft 40 and is coupled with moving contact 10 pivotally, the pressure of described moving contact 10 is provided by spring 60, and can be realized with operating mechanism 30 and being connected by rotating shaft 40.Described moving contact scolds out tripgear to comprise a fork 50, described fork 50 has bending bar 50b in one end of length direction, middle part has boss 50a, the other end has actuator surface 50c, wherein: described bending bar 50b is plugged in the hole 10a on moving contact 10 rotationally, described boss 50a is contained in the groove 40a of rotating shaft 40 pivotly and slidably, the shape of described bending bar 50b is unrestricted, a preferably circular bending bar, the shape of described boss 50a is unrestricted, a preferably round boss, described actuator surface 50c can be coupled with the dropout semiaxis 301 of operating mechanism 30, in the time that moving contact 10 is done away from the motion of fixed contact 20 due to electrodynamic repulsion force, driven the bending bar 50b of fork 50 by moving contact 10, thereby drive the boss 50a at fork 50 middle parts slide and rotate in described groove 40a, the described dropout semiaxis 301 of actuator surface 50c promotion of fork 50 other ends is rotated, operating mechanism 30 releases, at this moment rotating shaft 40 quick rotation under mechanism's spring action also drives described moving contact 10 away from described fixed contact 20.On described dropout semiaxis 301, have boss 301a and hemi-pinacoid 301b, described boss 301a contacts with described actuator surface 50c, and promotes described boss 301a by actuator surface 50c, and the semiaxis 301 that makes to thread off rotates the release that realizes operating mechanism 30.
Refer to Fig. 4, operating mechanism 30 described in the utility model belongs to known technology, therefore only does simple description here.This operating mechanism 30 comprises a pair of cheek 304 that faces each other and arrange; One lever 308, hub setting is rotationally on a pair of cheek 304; One elbow linkage, this elbow linkage comprises connecting rod 305 and lower link 306, described upper connecting rod 305, lower link 306 connect around common axis pivotable each other, between common axis and described lever 308, be provided with main spring 309, described lower link 306 is connected by common axis pivotable with described rotating shaft 40, and described rotating shaft 40 is realized and being rotated by the action of elbow linkage; One tripping 307, is supported on a pair of cheek 304 rotationally, and is connected with described upper connecting rod 305 pivotables; Dropout semiaxis 301, the first snap close 302 and the second snap close 303, three is all bearing on a pair of cheek 304 rotationally, the first snap close 302 and the second snap close 303 link each other, contact with each other locking and the second snap close 303 of dropout semiaxis 301 and the first snap close 302 is in contact with one another locking with tripping 307 and realizes the locking of circuit breaker, drive the action of elbow linkage by the operation to lever 308, can realize connection and the breaking operation of circuit breaker.
Please continue to refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, narrate operation principle of the present utility model.In the time having short circuit current to pass through, moving contact 10 is scolded out and the moving contact centre of gyration 10b of moving contact 10 rotates, now the round bar 50b of fork 50 one end follows moving contact centre of gyration 10b to rotate, thereby drive the boss 50a at fork 50 middle parts slide and rotate along the groove 40a of rotating shaft 40, now the actuator surface 50c of fork 50 other ends promotes the boss 301a on dropout semiaxis 301, thereby force dropout semiaxis 301 to rotate, the contact-making surface of hasp face 302a on the hemi-pinacoid 301b of dropout semiaxis 301 and the first snap close 302 reduces gradually like this, until separate completely, operating mechanism 30 releases like this, now rotating shaft 40 is counterclockwise rotated fast under mechanism's spring action, thereby the moving contact 10 in drive rotating shaft 40 is away from described fixed contact 20, effectively prevent " falling of the contact " phenomenon occurring in prior art, improve the interrupting performance of circuit breaker.
Claims (2)
1.
a kind of moving contact of circuit breaker is scolded out tripgear, described circuit breaker (1) comprises operating mechanism (30), rotating shaft (40), be contained in pivotally in rotating shaft (40) and by rotating shaft (40) and can realize the moving contact (10) being connected with operating mechanism (30), and with the fixed contact (20) of moving contact (10) coupling, it is characterized in that: described moving contact scolds out tripgear to comprise a fork (50), described fork (50) has bending bar (50b) in one end of length direction, middle part has boss (50a), the other end has actuator surface (50c), wherein: described bending bar (50b) is plugged in the hole (10a) on moving contact (10) rotationally, described boss (50a) is contained in the groove (40a) of rotating shaft (40) pivotly and slidably, described actuator surface (50c) can be coupled with the dropout semiaxis (301) of operating mechanism (30), in the time that moving contact (10) is done away from the motion of fixed contact (20) due to electrodynamic repulsion force, drive bending bar (50b) by moving contact (10), thereby drive the boss (50a) at fork (50) middle part slide and rotate in described groove (40a), make the actuator surface (50c) of fork (50) other end promote described dropout semiaxis (301) rotation, make operating mechanism (30) release.
2.
the moving contact of a kind of circuit breaker according to claim 1 is scolded out tripgear, it is characterized in that thering is boss (301a) and hemi-pinacoid (301b) on described dropout semiaxis (301), described boss (301a) contacts with described actuator surface (50c), and promoting described boss (301a) by actuator surface (50c), the semiaxis (301) that makes to thread off rotates the release that realizes operating mechanism (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870809.0U CN203644706U (en) | 2013-12-27 | 2013-12-27 | Moving contact repulsion open tripping device for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870809.0U CN203644706U (en) | 2013-12-27 | 2013-12-27 | Moving contact repulsion open tripping device for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644706U true CN203644706U (en) | 2014-06-11 |
Family
ID=50875932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320870809.0U Expired - Lifetime CN203644706U (en) | 2013-12-27 | 2013-12-27 | Moving contact repulsion open tripping device for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203644706U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377091A (en) * | 2014-10-28 | 2015-02-25 | 浙江天正电气股份有限公司 | Breaker structure achieving quick tripping through electro-dynamic repulsion force |
| CN108538686A (en) * | 2017-03-06 | 2018-09-14 | 上海良信电器股份有限公司 | A kind of circuit breaker trip unit |
| CN108735557A (en) * | 2018-08-07 | 2018-11-02 | 江苏凯隆电器有限公司 | The reprimand of moving contact of breaker opens locking device and its working method |
| CN109841459A (en) * | 2019-02-20 | 2019-06-04 | 贵州泰永长征技术股份有限公司 | A kind of moving contact reprimand changes up fast tripgear |
-
2013
- 2013-12-27 CN CN201320870809.0U patent/CN203644706U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377091A (en) * | 2014-10-28 | 2015-02-25 | 浙江天正电气股份有限公司 | Breaker structure achieving quick tripping through electro-dynamic repulsion force |
| CN108538686A (en) * | 2017-03-06 | 2018-09-14 | 上海良信电器股份有限公司 | A kind of circuit breaker trip unit |
| CN108735557A (en) * | 2018-08-07 | 2018-11-02 | 江苏凯隆电器有限公司 | The reprimand of moving contact of breaker opens locking device and its working method |
| CN108735557B (en) * | 2018-08-07 | 2024-03-22 | 江苏凯隆电器有限公司 | Repulsion unlocking device of breaker moving contact and working method thereof |
| CN109841459A (en) * | 2019-02-20 | 2019-06-04 | 贵州泰永长征技术股份有限公司 | A kind of moving contact reprimand changes up fast tripgear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203644706U (en) | Moving contact repulsion open tripping device for circuit breaker | |
| CN203026469U (en) | Moving contact component of moulded case circuit breaker | |
| CN101630611B (en) | Selective protective breaker | |
| CN204577267U (en) | The overlapping switching mechanism of neutral pole and automatic transfer switching electric appliance | |
| CN207587618U (en) | The switching off/on device of vacuum circuit breaker | |
| CN101986413B (en) | Moving contact clamping mechanism for molded case low-voltage breaker | |
| CN201242984Y (en) | Selective protection circuit breaker | |
| CN203150498U (en) | High current repulsion-aside rapid action mechanism of miniature circuit breaker | |
| CN201302964Y (en) | A small-size equidirectional series double-breakpoint circuit breaker | |
| JP4951597B2 (en) | Breaker | |
| CN202259079U (en) | Operating mechanism of small-sized breaker | |
| CN207320039U (en) | A kind of breaker of plastic casing rotary type double-breakpoint structure of contact terminal | |
| WO2013053283A1 (en) | Rotation double-breakpoint movable contact module | |
| CN205428861U (en) | Breaker | |
| CN107706059A (en) | A kind of anti-coincidence brake mechanism of breaker with double breaks and plastic case | |
| CN101170031A (en) | Quick break low voltage circuit breaker | |
| CN100483595C (en) | Reed rotating axis locking mechanism | |
| CN208548329U (en) | The operating mechanism and breaker of breaker | |
| CN103000464A (en) | Balance mechanism used for anti-impact vibration of electromagnetic trip | |
| CN102426998A (en) | Operating mechanism of minitype breaker | |
| CN203026463U (en) | Shock-vibration-resistant balance mechanism for electromagnetic release | |
| JP3198725U (en) | Outdoor vacuum circuit breaker | |
| CN107578967B (en) | Rotary double-breakpoint contact structure of molded case circuit breaker | |
| CN201054339Y (en) | Quick close-open low-voltage circuit breaker | |
| CN206331991U (en) | The contact system of dual-interruption point breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |