CN1601687A - Directly-pushing residual current action tripping mechanism - Google Patents
Directly-pushing residual current action tripping mechanism Download PDFInfo
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- CN1601687A CN1601687A CN 03159578 CN03159578A CN1601687A CN 1601687 A CN1601687 A CN 1601687A CN 03159578 CN03159578 CN 03159578 CN 03159578 A CN03159578 A CN 03159578A CN 1601687 A CN1601687 A CN 1601687A
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- push rod
- residual current
- tripping mechanism
- arm
- rod
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Abstract
The tripping mechanism includes a coil kit, a post rod and a push rod. The said push rod coupled on body case possesses first arm cooperated with the post rod. A connecting rod interlocked with operating mechanism of breaker is set up at first arm. There is also a reset spring on the push rod. When residual current produces in circuit, electromagnetic field generated in coil kit drives movement of the post rod, and drives the push rod rotation around axis. The connecting rod drives operating mechanism for tripping action. There is no mechanism of amplification in the invention. Thus, there is no additional abrasion so as to raise electromechanical lifetime and lower cost. Comparing with tripping mechanism in straight pushing mode, rotation structure is adopted in the push rod. Thus, friction force is reduced greatly so that tripping operation is more sensitive and reliable.
Description
Technical field
The present invention relates to a kind of residual current acting tripping mechanism of low-voltage miniature plastic casing formula residual current action breaker; specifically a kind of direct driving residual current acting tripping mechanism; its effect is when residual current surpasses setting; the fulcrum that will be in the circuit breaker operation mechanism of closure state is disintegrated and cut-off breaker, plays the effect of open circuit protection.
Background technology
The circuit breaker of general band residual current protecting, its tripping mechanism comprises a drive unit and a shank.Described drive unit comprises the magnetictrip and the mechanism that transmits and amplify described actuating force that produce actuating force.When residual current surpasses setting, the magnetictrip action produces actuating force and passes to shank by push rod by the actuating force enlarger, and the lever that shank drives operating mechanism sways, the quadric chain of operating mechanism is disintegrated, and circuit breaker disconnected after the contact was opened.The general structure of the tripping mechanism of this structure is comparatively complicated, and parts size precision is had relatively high expectations, thereby the manufacturing cost of product is also high.
For solving the problems of the technologies described above, the residual current tripping mechanism of the NBH8LE-40 type circuit breaker that our company produces has adopted the direct way of propelling of flat push type, and this tripping mechanism comprises a magnetictrip that produces actuating force; A connecting rod that transmits described actuating force, the one end contacts with the push rod of described magnetictrip, and the other end is provided with a boss; Described connecting rod is provided with a back-moving spring; Dropout lever one end leans on the boss of described connecting rod, and the other end is articulated on the underarm of lever of circuit breaker operation mechanism.Above-mentioned tripping mechanism has increased the actuating force arm lengths, thereby has reduced institute's tripping force effectively by changing the point of attachment of dropout lever and operating mechanism lever, realizes that directly promoting push rod by release produces dropout.Because the motion of described push rod is a straight line, so above-mentioned tripping mechanism is referred to as the flat push type structure.
Summary of the invention
What the present invention will solve is the above-mentioned defective that prior art exists, and the another kind of directly residual current acting tripping mechanism of driving is provided.The technical scheme that addresses the above problem employing is: direct driving residual current acting tripping mechanism, comprise coil block, a push rod and a push rod that produces actuating force, it is characterized in that described push rod shaft is connected on the shell, and have a first arm that matches with described push rod; Also be provided with a connecting rod with described circuit breaker operation mechanism interlock on the described the first arm; Also be provided with a back-moving spring on the described push rod.
Residual current acting tripping mechanism of the present invention; when producing residual current in the protected circuit; residual current detects control system will apply enough big voltage signal at the coil block two ends; the electromagnetic field that coil block produces drives the push rod motion; and the promotion push rod sways; the connecting rod that is arranged on the push rod the first arm links to each other with lever on the circuit breaker operation mechanism by the containing hole that is arranged on the shell, because the interlock of lever is threaded off operating mechanism.The present invention avoids enlarger parts defective easy to wear owing to do not establish enlarger, can improve the dynamo-electric life-span of product greatly; Simultaneously, the present invention realizes the residual current dropout with less parts, can reduce cost greatly.Its another advantage is that described push rod adopts rotational structure, compare its frictional force of flat push type tripping mechanism and greatly reduce, thereby it is more sensitive and reliable to thread off.
As a further improvement on the present invention, the ccontaining groove of described connecting rod is that the rotating shaft with described push rod is one section arc-shaped slot in the center of circle, described connecting rod and ccontaining groove adopt matched in clearance, make connecting rod can do limited motion in groove, the length of groove just in time is an impulse stroke of connecting rod.The first arm of described push rod is fan-shaped.The first arm of described push rod is provided with the boss of a relative configuration with described push rod.
Further improve as of the present invention again, also be provided with indication piece on the described shell, described indication piece is provided with a back-moving spring; Described push rod also is provided with second arm of a relative configuration with described indication piece; Second arm of described push rod is provided with elbow, and described indication piece is provided with the projection of a relative configuration with described elbow.During normal operation of circuit breaker, indication piece is pressed, and its projection embeds in the elbow of described push rod second arm, and is locked in this state; When producing residual current in the circuit, described push rod sways after being promoted by push rod, and second arm of described push rod and the projection of indication piece are thrown off, and described indication piece pops up under the effect of back-moving spring.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of residual current acting tripping mechanism of the present invention.
Fig. 2 is the structural representation of push rod.
The schematic diagram that Fig. 3 circuit breaker combines with the residual current tripping mechanism.
Fig. 4 is the state diagram of tripping mechanism of the present invention when residual current is arranged.
Embodiment
With reference to Fig. 1,2, direct driving residual current acting tripping mechanism, comprise coil block, a push rod 3 and a push rod that produces actuating force, described push rod 6 is coupling on shell 9, and has a downward sector arm 14 and second arm 11 that makes progress.One side of described sector arm 14 is provided with the boss 15 of a relative configuration with described push rod, and the back side of opposite side is provided with a connecting rod 13 with described circuit breaker operation mechanism interlock.On described shell 9, be provided with the ccontaining groove 10 of connecting rod, the ccontaining groove 10 of this connecting rod is that the rotating shaft 5 with described push rod is one section arc-shaped slot in the center of circle, described connecting rod 13 adopts matched in clearance with ccontaining groove 10, make connecting rod can do limited motion in groove, the length of groove just in time is an impulse stroke of connecting rod.Also be provided with a back-moving spring 4 on the described push rod 6.
Also be provided with indication piece 8 on the described shell, described indication piece 8 is provided with a back-moving spring 7, and the left side of described indication piece 8 also is provided with a projection 20; Second arm of described push rod is provided with the elbow 12 with described projection 20 relative configurations.
Fig. 3 is the schematic diagram that residual current tripping mechanism 22 of the present invention combines with circuit breaker 1.The adjacent side of tripping mechanism 22 and circuit breaker 1 card is mutually closed, and the connecting rod 13 of tripping mechanism 22 inserts in the deep-slotted chip breaker 24 that circuit breakers 1 sidewall offers, and links to each other with the lever of operating mechanism.Above-mentioned tripping mechanism 22 forms the circuit breaker 23 of being with the residual current tripping mechanism behind the splicing-in with circuit breaker 1 mutually by the movable rail intercell connector.
The course of work of residual current tripping mechanism of the present invention is as follows:
With reference to Fig. 4; when producing residual current in the protected circuit; residual current detects control will apply enough big voltage signal at coil block 2 two ends; the electromagnetic field that coil block 2 produces drives push rod 3 and moves right; promoting push rod 6 is that the center rotates counterclockwise with axle 5; when the angle of rotating acquired a certain degree, the connecting rod on the push rod sector arm drove circuit breaker 1 and threads off, i.e. breaker open operation.Simultaneously the elbow 12 of described push rod second arm is thrown off with the projection 20 of indication piece, and described indication piece 8 pops up under the effect of back-moving spring 7 to projection 20 and contacts with shell 9; At this moment, the elbow 12 of described push rod second arm is relative with the projection 20 of indication piece.
Behind circuit breaker 1 separating brake, coil block 2 two ends lose voltage signal, magnetic field diminishes, the thrust of 3 pairs of push rods 6 of push rod disappears, make push rod 6 under the twisting force of back-moving spring 4, clockwise rotate, when the elbow 12 that turns to push rod second arm contacted with the projection 20 of indication piece, the motion of push rod 6 was obstructed and stop motion.Because push rod can not reset, circuit breaker 1 is subjected to closing not brake application from the resistance of push rod 6 in making process.
After the residual current fault was got rid of, when pressing indication piece 8, the resistance on the push rod 6 disappeared and get back to initial position under the twisting force of spring 4.Circuit breaker 1 can close a floodgate under no push rod resistance situation, and tripping mechanism 22 is returned to state shown in Figure 1.
Claims (7)
1, a kind of direct driving residual current acting tripping mechanism, comprise coil block (2), a push rod (3) and a push rod (6) that produces actuating force, it is characterized in that described push rod (6) is coupling on shell (9), and have a first arm that matches with described push rod (14); Also be provided with a connecting rod (13) with described circuit breaker operation mechanism interlock on the described the first arm (14); Also be provided with a back-moving spring (4) on the described push rod.
2, direct driving residual current acting tripping mechanism as claimed in claim 1 is characterized in that offering on the described shell the ccontaining groove of connecting rod (10), and described connecting rod (13) is connected to the operating mechanism of circuit breaker by this appearance groove.
3, direct driving residual current acting tripping mechanism as claimed in claim 2 is characterized in that the ccontaining groove of described connecting rod (10) is that rotating shaft with described push rod is one section arc-shaped slot in the center of circle.
4, direct driving residual current acting tripping mechanism as claimed in claim 3 is characterized in that the first arm (14) of described push rod is fan-shaped.
5, direct driving residual current acting tripping mechanism as claimed in claim 4 is characterized in that the first arm (14) of described push rod is provided with the boss (15) of a relative configuration with described push rod.
6, direct driving residual current acting tripping mechanism as claimed in claim 5 is characterized in that also being provided with on the described shell indication piece (8), and described indication piece is provided with a back-moving spring (7); Described push rod also is provided with second arm (11) of a relative configuration with described indication piece.
7, direct driving residual current acting tripping mechanism as claimed in claim 6 is characterized in that second arm of described push rod is provided with elbow (12), and described indication piece is provided with the projection (20) of a relative configuration with described elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031595782A CN100414662C (en) | 2003-09-24 | 2003-09-24 | Directly-pushing residual current action tripping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031595782A CN100414662C (en) | 2003-09-24 | 2003-09-24 | Directly-pushing residual current action tripping mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601687A true CN1601687A (en) | 2005-03-30 |
| CN100414662C CN100414662C (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031595782A Expired - Lifetime CN100414662C (en) | 2003-09-24 | 2003-09-24 | Directly-pushing residual current action tripping mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN100414662C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049336A1 (en) * | 2006-10-25 | 2008-05-02 | Zhejiang Chint Electrics Co., Ltd | Circuit breaker for rapidly breaking low voltage circuit |
| CN103646826A (en) * | 2013-11-28 | 2014-03-19 | 德力西电气有限公司 | Novel action mechanism of electrical leakage protection module |
| WO2015039607A1 (en) * | 2013-09-18 | 2015-03-26 | 德力西电气有限公司 | Tripping mechanism on residual current-operated protective device |
| CN105405723A (en) * | 2015-11-27 | 2016-03-16 | 杭州鸿雁电器有限公司 | Tripping mechanism component |
| CN105845514A (en) * | 2016-05-19 | 2016-08-10 | 上海电科电器科技有限公司 | Arc fault detection circuit breaker |
| CN106531579A (en) * | 2015-09-11 | 2017-03-22 | 浙江正泰电器股份有限公司 | Action mechanism of residual current operated circuit breaker |
| CN107359086A (en) * | 2016-05-10 | 2017-11-17 | 上海诺雅克电气有限公司 | The indicating fault auxiliary contact of breaker |
| CN107946153A (en) * | 2018-01-04 | 2018-04-20 | 常安集团有限公司 | Leakage circuit breakers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO304860B1 (en) * | 1991-07-22 | 1999-02-22 | Pdl Holdings Ltd | A switching mechanism |
| NZ288704A (en) * | 1994-07-04 | 1998-08-26 | Greenbrook Electrical Plc | Detent mechanism for electrical trip switch |
| CN2285003Y (en) * | 1996-11-19 | 1998-06-24 | 上海华声电器研究所 | Hand-operated and leakage external control switch structure |
| IT1311069B1 (en) * | 1999-03-04 | 2002-02-28 | Abb Ricerca Spa | RELEASE DEVICE FOR OPENING THE CONTACTS OF A SWITCH ASSOCIATED WITH IT |
| CN2558070Y (en) * | 2001-12-27 | 2003-06-25 | 正泰集团公司 | Low-voltage small size plastic shell residual current acted circuit breaker |
-
2003
- 2003-09-24 CN CNB031595782A patent/CN100414662C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049336A1 (en) * | 2006-10-25 | 2008-05-02 | Zhejiang Chint Electrics Co., Ltd | Circuit breaker for rapidly breaking low voltage circuit |
| CN101170031B (en) * | 2006-10-25 | 2010-12-22 | 浙江正泰电器股份有限公司 | Quick break low voltage circuit breaker |
| WO2015039607A1 (en) * | 2013-09-18 | 2015-03-26 | 德力西电气有限公司 | Tripping mechanism on residual current-operated protective device |
| RU2634840C2 (en) * | 2013-09-18 | 2017-11-07 | Деликси Электрик Лтд | Tripping mechanism of device for protection from earth fault currents |
| CN103646826A (en) * | 2013-11-28 | 2014-03-19 | 德力西电气有限公司 | Novel action mechanism of electrical leakage protection module |
| CN106531579A (en) * | 2015-09-11 | 2017-03-22 | 浙江正泰电器股份有限公司 | Action mechanism of residual current operated circuit breaker |
| CN106531579B (en) * | 2015-09-11 | 2019-10-22 | 浙江正泰电器股份有限公司 | The actuating mechanism of residual current action breaker |
| CN105405723A (en) * | 2015-11-27 | 2016-03-16 | 杭州鸿雁电器有限公司 | Tripping mechanism component |
| CN107359086A (en) * | 2016-05-10 | 2017-11-17 | 上海诺雅克电气有限公司 | The indicating fault auxiliary contact of breaker |
| CN107359086B (en) * | 2016-05-10 | 2019-11-29 | 上海诺雅克电气有限公司 | The indicating fault auxiliary contact of breaker |
| CN105845514A (en) * | 2016-05-19 | 2016-08-10 | 上海电科电器科技有限公司 | Arc fault detection circuit breaker |
| CN107946153A (en) * | 2018-01-04 | 2018-04-20 | 常安集团有限公司 | Leakage circuit breakers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100414662C (en) | 2008-08-27 |
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Owner name: ZHEJIANG ZHENGTAI ELECTRIC APPLIANCE CO., LTD. Free format text: FORMER OWNER: CORRECT ZHENGTAI GROUP CO., LTD. Effective date: 20070810 |
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Effective date of registration: 20070810 Address after: 325603 Intellectual Property Office, Department of law, CHINT building, CHINT Industrial Park, North white elephant, Yueqing, Zhejiang Applicant after: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Address before: 325603 CHINT hi tech Industrial Park, North white elephant, Wenzhou, Zhejiang Applicant before: CHINT Group Corp. |
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Granted publication date: 20080827 |
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