CN103681137A - Molded-case circuit breaker with isolation function - Google Patents
Molded-case circuit breaker with isolation function Download PDFInfo
- Publication number
- CN103681137A CN103681137A CN201310721779.1A CN201310721779A CN103681137A CN 103681137 A CN103681137 A CN 103681137A CN 201310721779 A CN201310721779 A CN 201310721779A CN 103681137 A CN103681137 A CN 103681137A
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- Prior art keywords
- circuit breaker
- lever
- connecting rod
- baffle plate
- baffle
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Abstract
The invention discloses a molded-case circuit breaker with an isolation function. The molded-case circuit breaker with the isolation function comprises a shell and an operating mechanism in the shell, wherein the operating mechanism is internally provided with an upper connecting rod, a lower connecting rod and a lever; the molded-case circuit breaker further comprises a baffle; at least an axial hole is formed in the upper connecting rod; the axial hole is internally provided with a connecting piece; the two ends of the baffle are respectively movably connected to the connecting piece and a shaft which is shared by the upper and lower connecting rods; the lever is also provided with a limiting structure for limiting continuous motion of the lever relative to the baffle at the presence of the contact fusion welding; the baffle is C-shaped. When the operating mechanism is switched on or off normally, the designed limiting structure cannot block the switch-on/off motion of the circuit breaker as a contact system can move normally. When the contact is subjected to fusion welding, the contact of the circuit breaker is deadly limited and the C-shaped baffle no longer moves. When a handle is pushed at this moment, the C-shaped baffle collides with the limiting structure on the lever after the handle moves for a distance, so that the handle is prevented from moving to the switch-off position, and the effect of the isolation function is finally achieved.
Description
Technical field
The present invention relates to a kind of breaker of plastic casing with isolation features.Particularly, relate in the situation that contact of breaker, because of abnormal conditions, melting welding occurs, stop handle motion to the operating mechanism of the isolation features of open position.
Background technology
Breaker of plastic casing is a kind of device for switching that is applied to be used for distributing in distribution network electric energy and protection circuit and power-supply device, relies on the closed and disconnected of dynamic and static contact to realize switching on and off of electric current.When electric current in circuit breaker is excessive, likely can there is the situation of melting welding in contact, makes circuit breaker keep the state of connecting always.If now promote circuit breaker handle to open position, circuit breaker handle indicating circuit is in off-state, but in fact circuit, still in on-state, will be indicated the unfounded Circuits System that causes because of circuit breaker like this and damage or casualties.For fear of the generation of above-mentioned situation, designer has added isolation features in circuit breaker design, make people when contact of breaker melting welding to shift circuit breaker handle onto open position, thereby alert circuit breaker breaks down.
The breaker of plastic casing of selling on the market now, adopts the project organization of Schneider circuit breaker isolation features mostly, in lever one side, makes two with the structure of some bendings, utilizes an axle through upper connecting rod to come spacing.When circuit breaker normally disconnects, the structure of adding and described axle can be avoided, and do not have each other interference; When contact melting welding, because that root axle no longer moves, lever understands in motion process and described axle bumps and stop motion, thereby reaches the object of isolation.The deficiency of this scheme is: on lever, add the complexity that structure can increase technique, increase manufacturing cost, in order to step down to the structure of adding, it is very high that operating mechanism must be done simultaneously, will increase the height of circuit breaker like this, appearance effect and practicality are reduced.
Summary of the invention
The problems referred to above that exist for breaker of plastic casing in prior art, the invention provides a kind of breaker of plastic casing with isolation features, can reach good isolation effect and not affect the normal divide-shut brake performance of circuit breaker.
In order to achieve the above object, the scheme that the present invention adopts is:
A kind of breaker of plastic casing with isolation features, comprise the operating mechanism in housing and housing, described operating mechanism inside is provided with connecting rod, lower link and lever, also comprise baffle plate, on upper connecting rod, be provided with at least one axis hole, in described axis hole, be provided with connector, the two ends of described baffle plate are flexibly connected with described connector and the shared axle of upper and lower strut respectively, be also provided with and in contact melting welding situation, limit the position limiting structure that the relatively described baffle plate of lever continues motion on described lever.
As a further improvement on the present invention, described baffle plate is " C " type.
As a further improvement on the present invention, described connector is an axle through upper connecting rod upper shaft hole, through the axle of upper connecting rod, described position limiting structure is one to be fixed on the projection on lever, and projection is less than baffle plate end to the distance of the shared axle of upper and lower strut to the distance of the shared axle of upper and lower strut.
Adopt after above technical scheme, the beneficial effect that the present invention reaches is:
When the normal divide-shut brake of operating mechanism, because contact system can proper motion, designed position limiting structure can not hinder the divide-shut brake action of circuit breaker.When contact melting welding, contact of breaker will be limit extremely, and " C " type baffle plate is no longer moved.Driving handle now, we can find that handle moves after a segment distance, " C " type baffle plate by with lever on position limiting structure bump, thereby stop handle motion to open position, finally reach the effect of isolation features.
Accompanying drawing explanation
Fig. 1 is the structural representation of " C " type baffle plate in the present invention;
Fig. 2 is the structural representation of circuit breaker when handle locking position.
In figure: 1, handle; 2, lever; 3, upper connecting rod; 4, pass the axle of upper connecting rod; 5, baffle plate; 6, the shared axle of upper and lower strut; 7, moving contact; 8, fixed contact; 9, lower link; 10, rotating shaft; 11, position limiting structure.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The present invention is a kind of have isolation features breaker of plastic casing structure as shown in Figure 2, comprise the operating mechanism in housing and housing, operating mechanism inside is provided with connecting rod 3, lower link 9 and lever 2, also comprise baffle plate 5, on upper connecting rod 3, be provided with at least one axis hole, in axis hole, be provided with connector, the two ends of baffle plate 5 are flexibly connected with described connector and the shared axle 6 of upper and lower strut respectively, the motion of baffle plate 5 and upper connecting rod 3 can be kept synchronously, on lever 2, be also provided with and in contact melting welding situation, limit the position limiting structure 11 that the relatively described baffle plate 5 of lever 2 continues motion.
As a kind of preferred structure, the structure of baffle plate 5 as shown in Figure 1, is " C " type.
Connector is preferably an axle through upper connecting rod 3 upper shaft holes, pass the axle 4 of upper connecting rod, position limiting structure 11 is preferably a projection being fixed on lever 2, and projection is less than baffle plate 5 ends to the distance of the shared axle 6 of upper and lower strut to the distance of the shared axle 6 of upper and lower strut.
The present invention is a kind of, and to have the course of work of breaker of plastic casing of isolation features as follows:
Position when A, B, C represent respectively handle motion to closure, locking, off-state in Fig. 2.
The present invention is connected with " C " type baffle plate with a shared axle of upper and lower strut with an axle through upper connecting rod, and when operating mechanism moves, the motion of " C " type baffle plate and upper connecting rod is consistent.
When the normal divide-shut brake of circuit breaker, because moving contact 7 can normally rotate with rotating shaft 10, normal deciliter of moving contact 7 and fixed contact 8 energy, " C " type baffle plate and lever be energy proper motion all, position limiting structure can not hinder the action of mechanism, can not affect the divide-shut brake performance of mechanism simultaneously yet.
When contact melting welding, driving handle 1 makes breaker open operation, and due to contact melting welding, rotating shaft 10 is not rotated, and by the connection of lower link, connecting rod can not moved, and " C " type baffle plate will can not move.Now, handle still can continue along with promotion motion, and the position limiting structure of setting can collide with " C " type baffle plate in the position of B shown in Fig. 2, stops handle 1 to arrive open position, and alert circuit breaker breaks down, and plays the effect of isolation features.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a breaker of plastic casing with isolation features, comprise the operating mechanism in housing and housing, described operating mechanism inside is provided with connecting rod (3), lower link (9) and lever (2), it is characterized in that: also comprise baffle plate (5), on upper connecting rod (3), be provided with at least one axis hole, in described axis hole, be provided with connector, the two ends of described baffle plate (5) are flexibly connected with described connector and the shared axle (6) of upper and lower strut respectively, on described lever (2), be also provided with and in contact melting welding situation, limit the position limiting structure (11) that the relatively described baffle plate of lever (2) (5) continues motion.
2. the breaker of plastic casing with isolation features according to claim 1, is characterized in that: described baffle plate (5) is " C " type.
3. the breaker of plastic casing with isolation features according to claim 1 and 2, it is characterized in that: described connector is an axle through upper connecting rod (3) upper shaft hole, pass the axle (4) of upper connecting rod, described position limiting structure (11) is one to be fixed on the projection on lever (2), and projection is less than baffle plate (5) end to the distance of the shared axle of upper and lower strut (6) to the distance of the shared axle of upper and lower strut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721779.1A CN103681137B (en) | 2013-12-25 | 2013-12-25 | A kind of breaker of plastic casing with isolation features |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721779.1A CN103681137B (en) | 2013-12-25 | 2013-12-25 | A kind of breaker of plastic casing with isolation features |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103681137A true CN103681137A (en) | 2014-03-26 |
| CN103681137B CN103681137B (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310721779.1A Active CN103681137B (en) | 2013-12-25 | 2013-12-25 | A kind of breaker of plastic casing with isolation features |
Country Status (1)
| Country | Link |
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| CN (1) | CN103681137B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016173462A1 (en) * | 2015-04-28 | 2016-11-03 | 上海电科电器科技有限公司 | Fusion welding isolation mechanism for operating mechanism of circuit breaker |
| WO2018086539A1 (en) * | 2016-11-09 | 2018-05-17 | 北京人民电器厂有限公司 | Circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0516446A2 (en) * | 1991-05-29 | 1992-12-02 | Eaton Corporation | Circuit breaker in which a contact weld blocks the handle |
| US20040061580A1 (en) * | 2002-09-26 | 2004-04-01 | Masao Miura | Circuit breaker |
| CN1501418A (en) * | 2002-10-28 | 2004-06-02 | 富士电机机器制御株式会社 | Breaker |
| CN203644696U (en) * | 2013-12-25 | 2014-06-11 | 大全集团有限公司 | Plastic shell breaker having isolation function |
-
2013
- 2013-12-25 CN CN201310721779.1A patent/CN103681137B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0516446A2 (en) * | 1991-05-29 | 1992-12-02 | Eaton Corporation | Circuit breaker in which a contact weld blocks the handle |
| US20040061580A1 (en) * | 2002-09-26 | 2004-04-01 | Masao Miura | Circuit breaker |
| CN1501418A (en) * | 2002-10-28 | 2004-06-02 | 富士电机机器制御株式会社 | Breaker |
| CN203644696U (en) * | 2013-12-25 | 2014-06-11 | 大全集团有限公司 | Plastic shell breaker having isolation function |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016173462A1 (en) * | 2015-04-28 | 2016-11-03 | 上海电科电器科技有限公司 | Fusion welding isolation mechanism for operating mechanism of circuit breaker |
| CN106158528A (en) * | 2015-04-28 | 2016-11-23 | 上海电科电器科技有限公司 | The melting welding interrupter of the operating mechanism of breaker |
| CN106158528B (en) * | 2015-04-28 | 2018-10-19 | 上海电科电器科技有限公司 | The melting welding interrupter of the operating mechanism of breaker |
| US10332715B2 (en) | 2015-04-28 | 2019-06-25 | Seari Electric Technology Co., Ltd. | Fusion welding isolation mechanism for operation mechanism of circuit breaker |
| RU2699386C2 (en) * | 2015-04-28 | 2019-09-05 | Сэари Электрик Технолоджи Ко., Лтд. | Fusion welding isolation mechanism for automatic circuit breaker actuator |
| WO2018086539A1 (en) * | 2016-11-09 | 2018-05-17 | 北京人民电器厂有限公司 | Circuit breaker |
| RU2683244C1 (en) * | 2016-11-09 | 2019-03-27 | Бейцзин Пиплз Электрик Плант Ко., Лтд. | Automatic circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103681137B (en) | 2016-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151228 Address after: 211106 Jiangning economic and Technological Development Zone, Jiangsu, Hidden Dragon Road, No. 28, No. Applicant after: NANJING DAQO ELECTRIC INSTITUTE CO., LTD. Address before: 212211 Jiangsu city of Zhenjiang province Yangzhong city new town of New South Road, No. 66 Applicant before: Daquan Group Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170912 Address after: Xinba Daquan 212200 Yangzhong Road, Zhenjiang City, Jiangsu province 66 Patentee after: Jiangsu Daquan Kai Kai switch Co., Ltd. Address before: 211106 Jiangning economic and Technological Development Zone, Jiangsu, Hidden Dragon Road, No. 28, No. Patentee before: NANJING DAQO ELECTRIC INSTITUTE CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 212200 No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee after: Jiangsu Daquan Kaifan switch Co.,Ltd. Address before: 212200 No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee before: Jiangsu Daquan Kaifan Switch Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |