CN101807498B - Mechanical circuit breaker with short-circuit self-locking mechanism - Google Patents
Mechanical circuit breaker with short-circuit self-locking mechanism Download PDFInfo
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- CN101807498B CN101807498B CN2009100607278A CN200910060727A CN101807498B CN 101807498 B CN101807498 B CN 101807498B CN 2009100607278 A CN2009100607278 A CN 2009100607278A CN 200910060727 A CN200910060727 A CN 200910060727A CN 101807498 B CN101807498 B CN 101807498B
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Abstract
The invention relates to a mechanical circuit breaker with a short-circuit self-locking mechanism. A short-circuit self-locking mechanism is arranged in the circuit breaker. The short-circuit self-locking mechanism comprises a self-locking mechanism and a reset mechanism. The mechanical circuit breaker is characterized in that the self-locking mechanism controls an actuating strut in an overcurrent actuating mechanism to push and retain the lower end of a tripping linkage, and the reset mechanism enables the actuating strut in the overcurrent actuating mechanism to return to the initial state. Since the short-circuit self-locking mechanism is arranged in the circuit breaker, after the circuit breaker is opened in case of a short circuit, the circuit breaker can not be directly closed so as to remind the operator of the short-circuit accident, and the circuit breaker can only be reclosed after the operator finds out the reason and solves the problem. On the premise of reserving all the functions of the original circuit breaker, the invention increases the short-circuit self-locking function, thereby avoiding burning out the circuit breaker or causing fire hazard in the prior art as a result of reclosing the circuit breaker after a short circuit.
Description
Technical field
The invention belongs to a kind of low-voltage electrical apparatus, is the circuit breaker that a kind of mechanical type has short-circuit self-locking mechanism specifically.
Background technology
Mainly be to constitute (Fig. 1) at the circuit breaker (being commonly called as air switch) that uses at present by shell, operating grip, self-locking gangbar, dropout linkage, movement arm and operating point (contact); Its course of work is: the manipulation operations handle makes the self-locking gangbar drive the movement arm motion; The contact is linked to each other with the sheet metal of output accomplish the switch closure process, the gangbar of self-locking simultaneously cooperates with the dropout linkage accomplishes closed self-locking (Fig. 2).For circuit is protected; In existing circuit breaker, also be provided with overcurrent action Agency And sheet metal protection mechanism; Its course of work is: when the electric current that flows through circuit breaker surpasses the current ratings certain value; The lower end that overcurrent coil in the overcurrent actuating mechanism makes the actuating strut action of overcurrent actuating mechanism push the dropout linkage is rotated the dropout linkage, and the self-locking gangbar breaks away from the dropout linkage and accomplishes circuit breaker and break off, and reaches the purpose of protection; The course of work of bimetal leaf protection mechanism is: when the electric current that flows through circuit breaker surpasses the current ratings certain value; Make bi-metal plate deformed and touch the rotation of dropout linkage; The self-locking gangbar breaks away from the dropout linkage and accomplishes circuit breaker and break off, and reaches the purpose of protection.But; After circuit breaker broke off, the actuating strut of its overcurrent actuating mechanism or bimetallic sector-meeting recovered reset condition, if when load is short-circuited; Though above-mentioned circuit breaker can be accomplished overcurrent protection; Still exist need not to find out circuit breaker disconnect cause (because operating personnel do not know overcurrent protection or short circuit, short circuit is meant that generally its electric current that passes through is more than ten times of circuit breaker rated current) close circuit breaker once more, to such an extent as to burn circuit breaker or cause the defective of fire; This type of picture accident repeatedly has been shown in medium.
Summary of the invention
The purpose of this invention is to provide a kind of when circuit is short-circuited; After circuit breaker breaks off; Must carry out reset operation (is short circuit to remind the operator) again the mechanical type of close circuit breaker have the circuit breaker of short-circuit self-locking mechanism, to overcome the defective of burning circuit breaker in the prior art or causing fire.
To achieve these goals; The present invention is provided with short-circuit self-locking mechanism in circuit breaker; Short-circuit self-locking mechanism comprises self-locking mechanism and resetting device; Be characterized in: self-locking mechanism is that the actuating strut action in the control overcurrent actuating mechanism pushes the lower end of dropout linkage and the mechanism that keeps, and its resetting device is the mechanism that makes the actuating strut in the overcurrent actuating mechanism recover reset condition.
Shell installation position in above-mentioned self-locking mechanism and the resetting device circuit breaker is provided with guide vane end stop.
Above-mentioned self-locking mechanism is made up of a turning arm; The stage casing of turning arm is hinged on the shell of circuit breaker; Turning arm is provided with a torsion spring, and the lower end of turning arm contacts with actuating strut in the overcurrent actuating mechanism, and the upper end of turning arm is provided with an outstanding chimb; Resetting device is cooperated by a button that is built-in with stage clip and said turning arm and constitutes, and wherein the button lower end is provided with a projection, the stage clip in the button when oppression state, the projection of its button lower end be shelved on turning arm the upper end chimb below.
Above-mentioned self-locking mechanism and resetting device are made up of a button that is built-in with stage clip, and its button lower end is provided with a projection, the stage clip in the button when oppression state, the projection of its button lower end be shelved on actuating strut in the overcurrent actuating mechanism below.
Because the present invention is provided with short-circuit self-locking mechanism in circuit breaker; Make the present invention after the circuit breaker that is short-circuited breaks off phenomenon; Direct close circuit breaker, reminding operator's accident that is short-circuited, close circuit breaker again after should ascertaining the reason and deal with problems.The present invention has increased short circuit self-locking function keeping under the situation of original circuit breaker all functions, thus overcome in the prior art because of after the short circuit again close circuit breaker cause the defective of burning circuit breaker or causing fire.
Description of drawings
Fig. 1 is present circuit breaker off-state structural representation.
Fig. 2 is present breaker closing status architecture sketch map.
Fig. 3 is the embodiment of the invention 1 an off-state structural representation.
Fig. 4 is the embodiment of the invention 1 a closure state structural representation.
Fig. 5 is the embodiment of the invention 1 a self-locking state structural representation.
Fig. 6 is the embodiment of the invention 2 off-state structural representations.
Fig. 7 is the embodiment of the invention 2 closure state structural representations.
Fig. 8 is the embodiment of the invention 2 self-locking state structural representations.
Among the figure: 1-shell, 2-operating grip, 3-self-locking gangbar, 4-dropout interlock (bar) device, 5-overcurrent actuating mechanism, 5.1-actuating strut, 6-bimetal leaf, 7-movement arm, 8-operating point, 9-button, 9.1-button projection, 10-turning arm, 10.1-turning arm chimb, 11-torsion spring, 12-guide vane end stop.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is made further detailed description.
The present invention is under the situation that keeps former breaker structure constant (all functions are constant); A short-circuit self-locking mechanism is set in circuit breaker in addition to be constituted; Short-circuit self-locking mechanism comprises self-locking mechanism and resetting device; Self-locking mechanism is that the actuating strut action in the control overcurrent actuating mechanism pushes the lower end of dropout linkage and the mechanism that keeps, and its resetting device is the mechanism that makes the actuating strut in the overcurrent actuating mechanism recover reset condition.
Embodiment 1:
Self-locking mechanism of the present invention is made up of a turning arm; The stage casing of turning arm is hinged on the shell of circuit breaker; Turning arm is provided with a torsion spring, and the lower end of turning arm contacts with actuating strut in the overcurrent actuating mechanism, and the upper end of turning arm is provided with an outstanding chimb; Resetting device is made up of a button and a cooperation of said turning arm that is built-in with stage clip, and wherein the button lower end is provided with a projection, and the stage clip in the button is when oppression state, and the projection of its button lower end is shelved on following (Fig. 3) of the upper end chimb of turning arm.
The operation principle of present embodiment is: when circuit breaker is short-circuited, owing to be much higher than the rated current of circuit breaker through the electric current in the overcurrent actuating mechanism, make actuating strut action in the overcurrent actuating mechanism push the lower end of dropout linkage; Thereby promoting the rotation of dropout linkage breaks off circuit breaker; Simultaneously, because the effect of torsion spring on the turning arm is rotated turning arm; The lower end of turning arm still with the overcurrent actuating mechanism in actuating strut contact; The chimb of the upper end of turning arm is because the chimb that the rotation of turning arm makes the projection of button lower end break away from the turning arm upper end makes the recovery of stage clip in the button, on one side the projection of button lower end contacts (Fig. 5) with the chimb that moves on the button with the turning arm upper end; After even circuit breaker breaks off; The lower end that actuating strut in the overcurrent actuating mechanism is rotated arm is withstood and can not get recovering, and promptly the actuating strut in the overcurrent actuating mechanism makes the dropout linkage remain on trip status can not to recover, thereby makes and both made the closed procedure handle; Can not make breaker closing, and accomplish the short circuit self-locking.Recovery operation if desired only need press the button, make the projection of button lower end be shelved on turning arm the upper end chimb below, the actuating strut in the overcurrent actuating mechanism could recover, the gangbar of promptly threading off recovery, just closed procedure handle once more makes breaker closing.
Embodiment 2:
Self-locking mechanism of the present invention and resetting device are made up of a button that is built-in with stage clip, and its button lower end is provided with a projection, the stage clip in the button when oppression state, the projection of its button lower end be shelved on actuating strut in the overcurrent actuating mechanism below.
The operation principle of present embodiment is: when circuit breaker is short-circuited, owing to be much higher than the rated current of circuit breaker through the electric current in the overcurrent actuating mechanism, make actuating strut action in the overcurrent actuating mechanism push the lower end of dropout linkage; Thereby promoting the rotation of dropout linkage breaks off circuit breaker; Simultaneously because the action of actuating strut in the overcurrent actuating mechanism, make the projection of button lower end break away from actuating strut below; In button, move on the projection of the restitution knob down lower end of stage clip; The end points of the actuating strut in the projection that makes the button lower end and the overcurrent actuating mechanism contacts, even after circuit breaker broke off, the actuating strut in the overcurrent actuating mechanism was withstood by the projection of button lower end and can not get recovering; Be that actuating strut in the overcurrent actuating mechanism makes the dropout linkage remain on trip status can not to recover; Thereby make both to have made the closed procedure handle, can not make breaker closing, and accomplish the short circuit self-locking.Recovery operation if desired only need press the button, and the projection of button lower end is shelved on below the actuating strut in the overcurrent actuating mechanism; Actuating strut in the overcurrent actuating mechanism could recover; The gangbar of promptly threading off is recovered, and just closed procedure handle once more makes breaker closing.
The effect that the shell installation position of self-locking mechanism of the present invention and resetting device circuit breaker is provided with guide vane end stop is that self-locking mechanism and resetting device can stably be fixed in the circuit breaker.
The content of not doing in this specification to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (1)
1. a mechanical type has the circuit breaker of short-circuit self-locking mechanism; In circuit breaker, be provided with the short circuit self-locking device; The short circuit self-locking device comprises self-locking mechanism and resetting device; Said self-locking mechanism is that the actuating strut action in the control overcurrent actuating mechanism pushes the lower end of dropout linkage and the mechanism that keeps, and said resetting device is the mechanism that makes the actuating strut in the overcurrent actuating mechanism recover reset condition, and it is characterized in that: said self-locking mechanism is made up of a turning arm; The stage casing of turning arm is hinged on the shell of circuit breaker; Turning arm is provided with a torsion spring, and the lower end of turning arm contacts with actuating strut in the overcurrent actuating mechanism, and the upper end of turning arm is provided with an outstanding chimb; Said resetting device is made up of a button and a cooperation of said turning arm that is built-in with stage clip; Wherein said button lower end is provided with a projection; Stage clip in the said button when oppression state, the projection of its button lower end be shelved on turning arm the upper end chimb below.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100607278A CN101807498B (en) | 2009-02-12 | 2009-02-12 | Mechanical circuit breaker with short-circuit self-locking mechanism |
| RU2010134566/07A RU2463680C2 (en) | 2008-07-04 | 2009-03-17 | Breaker with short circuit fault self-blocking function |
| JP2011515069A JP5444336B2 (en) | 2008-07-04 | 2009-03-17 | Breaker with short self-locking function |
| EP09771914.0A EP2309528A4 (en) | 2008-07-04 | 2009-03-17 | Breaker with short circuit self-locking function |
| PCT/CN2009/070833 WO2010000144A1 (en) | 2008-07-04 | 2009-03-17 | Breaker with short circuit self-locking function |
| MX2011000148A MX2011000148A (en) | 2008-07-04 | 2009-03-17 | Breaker with short circuit self-locking function. |
| AU2009266231A AU2009266231A1 (en) | 2008-07-04 | 2009-03-17 | Breaker with short circuit self-locking function |
| BRPI0913668A BRPI0913668A2 (en) | 2008-07-04 | 2009-03-17 | circuit breaker with short circuit self-locking function |
| US12/845,783 US8334739B2 (en) | 2008-07-04 | 2010-07-29 | Circuit breaker with short circuit self-locking function |
| ZA2011/00071A ZA201100071B (en) | 2008-07-04 | 2011-01-04 | Breaker with short circuit self-locking function |
| CO11012473A CO6351834A2 (en) | 2008-07-04 | 2011-02-03 | Circuit breaker with self-locking function in short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100607278A CN101807498B (en) | 2009-02-12 | 2009-02-12 | Mechanical circuit breaker with short-circuit self-locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101807498A CN101807498A (en) | 2010-08-18 |
| CN101807498B true CN101807498B (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100607278A Active CN101807498B (en) | 2008-07-04 | 2009-02-12 | Mechanical circuit breaker with short-circuit self-locking mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN101807498B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601563B (en) * | 2017-02-23 | 2019-02-26 | 厦门宏发开关设备有限公司 | A kind of electro-magnetic circuit breaker and quickly push latching device open |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457073A (en) * | 2002-05-01 | 2003-11-19 | 莱维顿制造有限公司 | Reset shutting and trip of circuit breaker |
| US6671145B2 (en) * | 2001-03-20 | 2003-12-30 | Leviton Manufacturing Co., Inc. | Reset lockout mechanism and independent trip mechanism for center latch circuit interrupting device |
| CN1490837A (en) * | 2003-08-28 | 2004-04-21 | 南京全屋电器开关有限公司 | Circuit breaker with magnetic mechanism and current controller and short circuit lock |
| CN2733578Y (en) * | 2004-09-23 | 2005-10-12 | 温州三蒙科技电气有限公司 | Earth fault circuit-breaker having reset locking and protecting device |
-
2009
- 2009-02-12 CN CN2009100607278A patent/CN101807498B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6671145B2 (en) * | 2001-03-20 | 2003-12-30 | Leviton Manufacturing Co., Inc. | Reset lockout mechanism and independent trip mechanism for center latch circuit interrupting device |
| CN1457073A (en) * | 2002-05-01 | 2003-11-19 | 莱维顿制造有限公司 | Reset shutting and trip of circuit breaker |
| CN1490837A (en) * | 2003-08-28 | 2004-04-21 | 南京全屋电器开关有限公司 | Circuit breaker with magnetic mechanism and current controller and short circuit lock |
| CN2733578Y (en) * | 2004-09-23 | 2005-10-12 | 温州三蒙科技电气有限公司 | Earth fault circuit-breaker having reset locking and protecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101807498A (en) | 2010-08-18 |
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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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100818 Assignee: HUBEI SHENGJIA WIRING Co.,Ltd. Assignor: Wan Jiasheng Contract record no.: 2014420000149 Denomination of invention: Mechanical circuit breaker with short-circuit self-locking mechanism Granted publication date: 20120822 License type: Exclusive License Record date: 20140717 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Mechanical circuit breaker with short circuit self-locking mechanism Effective date of registration: 20230331 Granted publication date: 20120822 Pledgee: Bank of China Limited Wuhan Hanyang sub branch Pledgor: HUBEI SHENGJIA WIRING Co.,Ltd. Registration number: Y2023420000144 |