CN101447372B - Tripping mechanism of circuit breaker - Google Patents
Tripping mechanism of circuit breaker Download PDFInfo
- Publication number
- CN101447372B CN101447372B CN2008102079440A CN200810207944A CN101447372B CN 101447372 B CN101447372 B CN 101447372B CN 2008102079440 A CN2008102079440 A CN 2008102079440A CN 200810207944 A CN200810207944 A CN 200810207944A CN 101447372 B CN101447372 B CN 101447372B
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- CN
- China
- Prior art keywords
- arm
- circuit breaker
- stop hook
- spring
- tripping mechanism
- 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 - Fee Related
Links
- 238000004146 energy storage Methods 0.000 claims description 21
- 238000009825 accumulation Methods 0.000 abstract 4
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003578 releasing effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Abstract
The invention discloses a tripping mechanism of a circuit breaker, which comprises a traction rod and a locking piece, wherein, the traction rod comprises at least one rotating arm, a lever part, a first spring, an energy accumulation part and a second spring; wherein, the one end of the lever part leans against the rotating arm on the traction rod, the other end thereof is provided with a stop hook, and the middle part is provided with a first rotating shaft; the first spring acts on the lever part to lead the lever part to lean against the rotating arm on the traction rod; the energy accumulation part is rotatablely installed on a second rotating shaft, a locking arm and a trigger arm are arranged on the energy accumulation part, the end part of the locking arm is connected with the stop hook on the lever part in a hanging way, and the trigger arm can be contacted with the locking piece; the second spring acts on the energy accumulation part to lead the end part of the locking arm to cling to the stop hook. The disengaging force needed by the tripping mechanism is less, and the action of the circuit breaker can be ensured to be reliable.
Description
Technical field
The present invention relates to circuit breaker, be specifically related to the tripping mechanism of circuit breaker.
Background technology
All be provided with tripping mechanism in the circuit breaker, its effect is when overload current occurring in the circuit, carries out delayed releasing; Or when short circuit current occurring in the circuit, carry out instantaneous trip, make circuit breaker trip, to realize protection to circuit.Comprise in the tripping mechanism that can be rotated a draw bar, the delayed releasing action is generally driven by bimetal leaf, and overload current makes bimetal leaf heating distortion, and its deformation force can promote draw bar and rotate, and then the promotion operating mechanism is threaded off; Instantaneous trip then generally promotes draw bar by electromagnet and rotates.
But in existing circuit breaker, draw bar often directly acts on snap close piece, when draw bar rotates, snap close piece is threaded off.Disclose " break tripping device " so a kind of as Chinese utility model patent ZL200620165140.5, the shortcoming that the release of this structure exists is, the tripping force that needs is bigger, in the less model of electric current, the active force that bimetal leaf or electromagnet produce may be not enough to promote draw bar and rotate, and tripping mechanism is insensitive, the action of circuit breaker is unreliable thereby cause.
Summary of the invention
The technical problem to be solved in the present invention provides the tripping mechanism of the littler circuit breaker of a kind of tripping force.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of tripping mechanism of circuit breaker, comprise draw bar and snap close piece, at least comprise a pivoted arm on the described draw bar, also comprise: lever piece, pivoted arm on one end and the draw bar leans, and the other end is provided with stop hook, and the centre is provided with first rotating shaft; First spring acts on the lever piece, and the pivoted arm on described lever piece and the draw bar is leant; The energy storage part is installed in rotation in second rotating shaft, and the energy storage part is provided with a lockup arm and a trigger arm, and the end of described lockup arm articulates mutually with stop hook on the lever piece, and described trigger arm can contact with snap close piece; Second spring acts on the energy storage part, and the end of lockup arm is abutted against on the stop hook.
The invention has the beneficial effects as follows: the present invention is provided with lever piece and energy storage part between draw bar and snap close piece, bimetal leaf or electromagnet are used on the draw bar with less masterpiece, just can drive the lever piece upset, then can discharge the energy storage part after the lever piece upset, the energy storage part discharges energy stored, and promotes the snap close piece dropout with bigger strength.Therefore, the tripping force that tripping mechanism of the present invention needs is littler, and can guarantee the reliable in action of circuit breaker.
Preferably, described first spring is a stage clip, is pressed on the end of lever piece.
Preferably, described second spring is a torsion spring, is enclosed within second rotating shaft.
Preferably, the back of described lockup arm and stop hook respectively is provided with the inclined-plane.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the tripping mechanism of circuit breaker of the present invention and the annexation schematic diagram of operating mechanism.
Fig. 2 is the tripping mechanism schematic diagram of circuit breaker of the present invention.
Embodiment
As shown in Figure 1 and Figure 2, tripping mechanism of the present invention comprises a draw bar 1, and draw bar 1 can rotate protruding two pivoted arms 11,12 on the draw bar 1 around axle 9.
The middle part of lever piece 5 is installed in rotation in first rotating shaft 8, one end 51 of lever piece 5 is resisted against on the pivoted arm 11 of draw bar, first spring 2 be pressed in lever piece 5 above, the end 51 of lever piece and the pivoted arm 11 on the draw bar are kept in touch, pivoted arm 11 is held lever piece 5 from below, makes it keep balance.First spring 2 is a stage clip in the present embodiment, if obviously first spring 2 is that a torsion spring that is installed in first rotating shaft 8 also can reach same effect.The other end of lever piece 5 is provided with stop hook 52.
When overload current occurring in the circuit, the bimetal leaf (not shown) in the circuit breaker occurs bending and deformation, and can promote pivoted arm 11 draw bar 1 is clockwise rotated; Perhaps when short circuit current occurring in the circuit, the electromagnet (not shown) action in the circuit breaker can promote pivoted arm 12 draw bar 1 is clockwise rotated.
When draw bar 1 clockwise rotates, can promote lever piece 5 overturns counterclockwise, the lockup arm 31 of energy storage part 3 is deviate from from stop hook 52, second spring, 6 energy stored discharge, energy storage part 3 is clockwise rotated, the trigger arm 32 of energy storage part 3 can bigger thrust make snap close piece 4 rotate dropout, thereby circuit breaker trip is disconnected.
When pulling handle and make breaker closing, can drive snap close piece 4 and reset, also drive energy storage part 3 simultaneously and rotate counterclockwise, the inclined-plane 33 at lockup arm 31 backs and inclined-plane 53 slide relative at stop hook 52 backs, and lockup arm 31 and stop hook 52 are formed again articulate locking, the tripping mechanism realization resets.
Claims (4)
1. the tripping mechanism of a circuit breaker comprises draw bar (1) and snap close piece (4), comprises a pivoted arm (11) on the described draw bar (1) at least, it is characterized in that also comprising with the lower part:
Lever piece (5), the pivoted arm (11) on one end (51) and the draw bar leans, and the other end is provided with stop hook (52), and the centre is provided with first rotating shaft (8);
First spring (2) acts on the lever piece (5), and the pivoted arm (11) on described lever piece (5) and the draw bar is leant; Energy storage part (3), be installed in rotation in second rotating shaft (7), energy storage part (3) is provided with a lockup arm (31) and a trigger arm (32), and the end of described lockup arm (31) articulates mutually with stop hook (52) on the lever piece, and described trigger arm (32) can contact with snap close piece (4);
Second spring (6) acts on the energy storage part (3), and the end of lockup arm (31) is abutted against on the stop hook (52).
2. the tripping mechanism of circuit breaker according to claim 1, it is characterized in that: described first spring (2) is a stage clip, is pressed on the end of lever piece (5).
3. the tripping mechanism of circuit breaker according to claim 1, it is characterized in that: described second spring (6) is a torsion spring, is enclosed within second rotating shaft (7).
4. the tripping mechanism of circuit breaker according to claim 1, it is characterized in that: the back of described lockup arm (31) and stop hook (52) respectively is provided with the inclined-plane, when pulling handle and make breaker closing, inclined-plane (53) slide relative at the inclined-plane (33) at lockup arm (31) back and stop hook (52) back, and lockup arm (31) and stop hook (52) are formed again articulate locking.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008102079440A CN101447372B (en) | 2008-12-26 | 2008-12-26 | Tripping mechanism of circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008102079440A CN101447372B (en) | 2008-12-26 | 2008-12-26 | Tripping mechanism of circuit breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101447372A CN101447372A (en) | 2009-06-03 |
CN101447372B true CN101447372B (en) | 2011-05-11 |
Family
ID=40742966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2008102079440A Expired - Fee Related CN101447372B (en) | 2008-12-26 | 2008-12-26 | Tripping mechanism of circuit breaker |
Country Status (1)
Country | Link |
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CN (1) | CN101447372B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101640146B (en) * | 2009-08-11 | 2012-01-11 | 上海永继电气股份有限公司 | Tripping device of circuit breaker |
CN102064054B (en) * | 2009-11-12 | 2014-02-26 | 施耐德电器工业公司 | Thermal electromagnetic tripping device and buckle mechanism thereof |
CN102568954B (en) * | 2010-12-22 | 2014-10-15 | 施耐德电器工业公司 | Residual current protection tripping mechanism and tripper |
CN103137389B (en) * | 2011-11-22 | 2015-09-23 | 上海电科电器科技有限公司 | The energy storage tripping mechanism of device for under-voltage releasing equipment |
CN102623259B (en) * | 2012-02-27 | 2015-12-16 | 温州创伟永吉电气有限公司 | A kind of fast-wiring formula circuit breaker |
CN103956303B (en) * | 2014-04-18 | 2016-03-30 | 江苏大全凯帆电器股份有限公司 | Circuit breaker quick-release mechanism |
CN207425751U (en) * | 2017-06-08 | 2018-05-29 | 李文杰 | A kind of high-breaking miniature breaker |
CN113963966B (en) * | 2020-07-20 | 2022-09-06 | 上海良信电器股份有限公司 | Separating brake switch and remote circuit breaker |
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2008
- 2008-12-26 CN CN2008102079440A patent/CN101447372B/en not_active Expired - Fee Related
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Publication number | Publication date |
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CN101447372A (en) | 2009-06-03 |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
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: SHANGHAI YONGJI ELECTRICAL HOLDING CO., LTD. Free format text: FORMER NAME: SHANGHAI ROGY ELECTRICITY CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 201515 Shanghai, Jinshan District, South Road, No. 2239 Patentee after: SHANGHAI YONGJI ELECTRICAL HOLDING Co.,Ltd. Address before: 201515 Shanghai, Jinshan District, South Road, No. 2239 Patentee before: SHANGHAI YONGJI ELECTRICAL HOLDING Co.,Ltd. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 |
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CF01 | Termination of patent right due to non-payment of annual fee |