CN100397540C - Operation mechanism of small circuit breaker - Google Patents
Operation mechanism of small circuit breaker Download PDFInfo
- Publication number
- CN100397540C CN100397540C CNB2005100242270A CN200510024227A CN100397540C CN 100397540 C CN100397540 C CN 100397540C CN B2005100242270 A CNB2005100242270 A CN B2005100242270A CN 200510024227 A CN200510024227 A CN 200510024227A CN 100397540 C CN100397540 C CN 100397540C
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- handle
- connecting rod
- locking arm
- keeper
- hinged
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Abstract
The present invention discloses an actuating mechanism of a minitype circuit breaker. The present invention comprises a handle, a connecting rod and a push rod, wherein the upper end of the connecting rod is hinged eccentrically on the handle, the lower end of the connecting rod is hinged on the push rod, and the lower end of the push rod is connected to a moving contact assembly. The present invention also comprises a self locking mechanism, which comprises a positioning component, a locking arm and a tripping arm, wherein the tripping arm is connected with the locking arm integrally, one end of the locking arm is hinged on a supporting frame through a spindle, the other end is hung on a spring, the upper end of the positioning component is hinged on the handle in a coaxial way, the lower end is supported on the locking arm vertically, the contact parts of the positioning component and the locking arm are a pair of bosses which are abutted mutually, a strip-shaped sliding groove is arranged on the positioning component, and the lower end of the connecting rod in the sliding groove is matched with the sliding groove in a sliding way. The match of the bosses between the locking arm and the positioning component of the actuating mechanism of the present invention are used for realizing the self locking and the tripping under the actions of the spring and the tripping arm. The present invention has the advantages of simple structure, few components and high sensitivity.
Description
Technical field
The present invention relates to circuit breaker, particularly a kind of operating mechanism of miniature circuit breaker.
Background technology
The operating mechanism of circuit breaker is one group can drive the cephalomotor interlinked mechanism of movable contact, and during breaker closing, operating mechanism drives moving contact and fixed contact closure, and produces self-locking by self-locking mechanism; When faults such as circuit transships, short circuit, the protection mechanism in the circuit breaker can promote self-locking mechanism and thread off, and self-locking is disengaged, breaker open operation, and operating mechanism drives moving contact and fixed contact disjunction.The operating mechanism ubiquity complex structure of existing miniature circuit breaker, shortcoming such as action sensitivity is low.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of operating mechanism of simple in structure, miniature circuit breaker that action sensitivity is high.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of operating mechanism of miniature circuit breaker, comprise handle, connecting rod, push rod, the upper end off-centre of described connecting rod is hinged on the handle, the lower end and the push rod of connecting rod are hinged, the lower end of push rod then is connected with moving contact component, also comprise self-locking mechanism, described self-locking mechanism comprises keeper, locking arm and the trip arm that links to each other with the locking arm one, one end of described locking arm is hinged on the support by axle, the other end is suspended on the spring, the upper end of described keeper is coaxial hinged with handle, and the lower end vertically withstands on the locking arm, the contact site of keeper and locking arm be a pair of mutually against boss, keeper is provided with the bar shaped chute, and the lower end of described connecting rod is slidingly matched with it in chute.
Operating mechanism of the present invention utilizes the cooperation of boss between locking arm and the keeper, just can realize self-locking and dropout under the effect of spring and the trip arm.The present invention is simple in structure, and part is few.The trip arm has utilized the lever force-saving principle, and the arm of force is longer, and the sensitivity of the action of therefore threading off is higher.
In the technique scheme, the preferable shape of connecting rod is " Contraband " shape, and its upper end is inserted on the handle, and the lower end is passed in the chute that push rod is inserted in keeper.
As to improvement of the technical scheme, the chute on the described keeper is "〉" the shape bending.This chute can adapt to the movement locus of connecting rod lower extreme point better, makes the motion of connecting rod more smooth and easy, and operating mechanism closes a floodgate more laborsaving.
Another kind of preferred version has been done improvement to the limit method of handle, is provided with arc boss on an end face of handle, and support is provided with two breach and matches with arc boss.When handle rotates, the boss on the end face turn to support on gap edge when offseting, handle stops operating, thus with the limit rotation of handle in reasonable range.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the schematic diagram of the operating mechanism of a kind of miniature circuit breaker of the present invention at gate-dividing state.
Fig. 2 is the perspective view after operating mechanism shown in Figure 1 removes push rod.
Fig. 3 is the partial enlarged drawing at I place among Fig. 2.
Fig. 4 is the schematic diagram of operating mechanism of the present invention in "on" position.
Fig. 5 is the arc boss of handle end face and the matching relationship schematic diagram of two breach on the support.
Fig. 6 is the STRUCTURE DECOMPOSITION figure of the operating mechanism of a kind of miniature circuit breaker of the present invention.
Embodiment
As Fig. 1; shown in Figure 6; main shaft 6; axle 4; the two ends of fixed axis 2 and spring installation shaft 13 are supported on respectively on support 1 and the fore-stock 11; keeper 5 and handle 7 are installed on the main shaft 6; the trip arm 3; locking arm 14 both one are installed on the axle 4; the other end of locking arm 14 is suspended on the lower end of spring 12; the upper end of spring 12 is fixed on the spring installation shaft 13; one end of back-moving spring 10 is fixed on the handle 7; the other end is fixed on the fore-stock 11; the upper end of " Contraband " shape connecting rod 9 is inserted in the hole of handle 7; the lower end is passed hole on the push rod 8 and is inserted in the chute on the keeper 5; the lower end of push rod 8 is connected with moving contact component; following the correcting of keeper 5 vertically withstands on the locking arm 14, the end of the trip arm 3 then with overload protection; protection mechanisms such as short-circuit protection are connected.
As shown in Figure 5, when handle 7 was in the disjunction position, because the effect of back-moving spring 10, an end of the arc boss 19 of handle 7 end faces was resisted against on the edge of support breach 18.This moment, the lower end of connecting rod 9 was positioned at the upper end of keeper 5 upper hopper chutes, and locking arm 14 is being pressed under the tension of spring 12 on the keeper 5, the boss 20 on the boss 21 on the locking arm 14 and the keeper 5 mutually against, as Fig. 2, shown in Figure 3.
When pulling handle 7 combined floodgates, because connecting rod 9 off-centre are hinged on the handle 7, the lower end of connecting rod 9 against the side of keeper 5 chutes to lower slider, push rod 8 promotes the moving contact component rotation downwards simultaneously, moving contact is moved to fixed contact, the counter-force transfer function of moving contact component can't rotate but the restriction that keeper 5 is subjected to locking arm boss 21 owing to the lower end remains on original position to the side of keeper 5 chutes.Handle 7 run-on points are to the line between the pin joint of connecting rod 9 and push rod 8 in motion process, the pin joint of connecting rod 9 and push rod 8 to the angle of the line between the pin joint of push rod 8 and moving contact component and handle 7 run-on points to the line between the pin joint of handle 7 and connecting rod 9, the pin joint of handle 7 and connecting rod 9 increases gradually to the angle between the pin joint of connecting rod 9 and push rod 8, when these two angles are spent greater than 180, on handle 7, form the moment opposite from the counter-force of moving contact component with back-moving spring 10, when this countertorque during greater than the reseting torque of back-moving spring 10, the operating mechanism self-locking, moving contact and fixed contact closure, the other end of the arc boss 19 of handle 7 end faces also just in time abuts on the edge of support breach 17 at this moment, handle 7 stops operating and remains on closing position, as shown in Figure 4.When faults such as generation overload or short circuit; the protection mechanism action; the end of the trip arm 3 is subjected to a thrust left; the active force that this thrust overcomes spring 12 rotates counterclockwise locking arm 14; locking arm boss 21 is threaded off with keeper boss 20, and keeper 5 is because the restriction of lower end is disengaged immediately swing left, connecting rod 9 and push rod 8 movement therewith; the thrust of 8 pairs of moving contact components of push rod is cancelled, moving contact and fixed contact disjunction.Simultaneously owing to the reaction force of moving contact component to push rod also descends rapidly, the countertorque that this reaction force forms on handle has been not enough to contend with the reseting torque of back-moving spring 10, handle 7 resets in the effect turning down of back-moving spring 10, drivening rod 9 motions simultaneously, connecting rod 9 also spurs keeper 5 simultaneously and swings to the right, make keeper boss 20 get back to the position relative with locking arm boss 21 again, operating mechanism all resets to the disjunction state.
Claims (4)
1. the operating mechanism of a miniature circuit breaker, comprise handle (7), connecting rod (9), push rod (8), the upper end off-centre of described connecting rod (9) is hinged on the handle (7), the lower end of connecting rod (9) and push rod (8) are hinged, the lower end of push rod (8) then is connected with moving contact component, also comprise self-locking mechanism, it is characterized in that: described self-locking mechanism comprises keeper (5), locking arm (14) and the trip arm (3) that links to each other with locking arm (14) one, one end of described locking arm (14) is hinged on the support (1) by axle (4), the other end is suspended on the spring (12), the upper end of described keeper (5) is coaxial hinged with handle (7), the lower end vertically withstands on the locking arm (14), the contact site of keeper (5) and locking arm (14) be a pair of mutually against boss (20,21), keeper (5) is provided with the bar shaped chute, and the lower end of described connecting rod (9) is slidingly matched with it in chute.
2. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: described connecting rod (9) is " Contraband " shape bar, and its upper end is inserted on the handle (7), and the lower end is passed push rod (8) and is inserted in the chute of keeper (5).
3. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: the chute on the described keeper (5) is "〉" the shape bending.
4. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: the end face of described handle (7) is provided with arc boss (19), and support (1) is provided with two breach (17,18) and matches with arc boss (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100242270A CN100397540C (en) | 2005-03-07 | 2005-03-07 | Operation mechanism of small circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100242270A CN100397540C (en) | 2005-03-07 | 2005-03-07 | Operation mechanism of small circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1832082A CN1832082A (en) | 2006-09-13 |
| CN100397540C true CN100397540C (en) | 2008-06-25 |
Family
ID=36994253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100242270A Expired - Fee Related CN100397540C (en) | 2005-03-07 | 2005-03-07 | Operation mechanism of small circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100397540C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7864003B2 (en) * | 2008-01-29 | 2011-01-04 | Siemens Industry, Inc. | Circuit breaker locking and unlocking mechanism |
| CN101540244B (en) * | 2008-03-21 | 2013-05-29 | 浙江加西亚电子电器有限公司 | Tripping device |
| CN103367054B (en) * | 2012-03-28 | 2016-06-08 | 上海良信电器股份有限公司 | The actuating mechanism of isolating switch |
| CN103681130B (en) * | 2012-09-11 | 2016-08-17 | 杭州之江开关股份有限公司 | A kind of breaker open operation button locking device |
| CN109659206A (en) * | 2018-12-24 | 2019-04-19 | 厦门宏发开关设备有限公司 | A kind of small type circuit breaker operating mechanism and miniature circuit breaker |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5015977A (en) * | 1990-08-02 | 1991-05-14 | General Electric Company | Circuit breaker positive trip indication spring |
| JPH07114871A (en) * | 1993-10-19 | 1995-05-02 | Fuji Electric Co Ltd | Remote control type circuit breaker |
| EP0978860A2 (en) * | 1998-08-07 | 2000-02-09 | Moeller GmbH | Circuit breaker |
| CN2420727Y (en) * | 1999-09-30 | 2001-02-21 | 方龙华 | Operation mechanism for micro circuit braker |
| CN1065071C (en) * | 1997-03-28 | 2001-04-25 | 三菱电机株式会社 | Circuit breaker |
| CN2562344Y (en) * | 2002-02-07 | 2003-07-23 | 浙江德力西电器股份有限公司 | Operational mechanism of leakage circuit breaker |
| CN2607656Y (en) * | 2002-11-28 | 2004-03-24 | 正泰集团公司 | Operating mechanism for auxiliary electrical apparatus release of circuit breaker |
| CN2791859Y (en) * | 2005-03-22 | 2006-06-28 | 浙江德力西电器股份有限公司 | Operation mechanism of small circuit breaker |
-
2005
- 2005-03-07 CN CNB2005100242270A patent/CN100397540C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5015977A (en) * | 1990-08-02 | 1991-05-14 | General Electric Company | Circuit breaker positive trip indication spring |
| JPH07114871A (en) * | 1993-10-19 | 1995-05-02 | Fuji Electric Co Ltd | Remote control type circuit breaker |
| CN1065071C (en) * | 1997-03-28 | 2001-04-25 | 三菱电机株式会社 | Circuit breaker |
| EP0978860A2 (en) * | 1998-08-07 | 2000-02-09 | Moeller GmbH | Circuit breaker |
| CN2420727Y (en) * | 1999-09-30 | 2001-02-21 | 方龙华 | Operation mechanism for micro circuit braker |
| CN2562344Y (en) * | 2002-02-07 | 2003-07-23 | 浙江德力西电器股份有限公司 | Operational mechanism of leakage circuit breaker |
| CN2607656Y (en) * | 2002-11-28 | 2004-03-24 | 正泰集团公司 | Operating mechanism for auxiliary electrical apparatus release of circuit breaker |
| CN2791859Y (en) * | 2005-03-22 | 2006-06-28 | 浙江德力西电器股份有限公司 | Operation mechanism of small circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1832082A (en) | 2006-09-13 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG DELIXI ELECTRIC APPLIANCE CO., LTD. Free format text: FORMER NAME: DELIXI ELECTRICAL APPLIANCE CO. LTD., ZHEJIANG |
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| CP01 | Change in the name or title of a patent holder |
Address after: Yueqing City, Zhejiang province 325604 Liushi Delixi Industrial Park Patentee after: Zhejiang DELIXI Electrical Co., Ltd. Address before: Yueqing City, Zhejiang province 325604 Liushi Delixi Industrial Park Patentee before: Delixi Electrical Appliance Co., Ltd., Zhejiang |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20210307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |