CN101620956B - Breaker with overcurrent self-locking function - Google Patents
Breaker with overcurrent self-locking function Download PDFInfo
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- CN101620956B CN101620956B CN 200810048306 CN200810048306A CN101620956B CN 101620956 B CN101620956 B CN 101620956B CN 200810048306 CN200810048306 CN 200810048306 CN 200810048306 A CN200810048306 A CN 200810048306A CN 101620956 B CN101620956 B CN 101620956B
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- overcurrent
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- extension bar
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Abstract
The invention relates to a breaker with overcurrent self-locking function, which is characterized in that: the breaker is provided with an overcurrent self-locking mechanism. With the overcurrent self-locking mechanism, the breaker cannot be closed directly after being opened under overcurrent until an operator is reminded of an accident, finds cause and solves the problem. The breaker adds overcurrent self-locking function while keeping the functions of the prior breaker so as to overcome the defect of breaker burndown or fire caused by reclosing of the breaker after overcurrent in the prior art.
Description
Technical field
The invention belongs to a kind of low-voltage electrical apparatus, is a kind of circuit breaker with overcurrent self-locking function specifically.
Background technology
Mainly to consist of (Fig. 1) by shell, operating grip, self-locking gangbar, dropout linkage, movement arm and operating point (contact) at the circuit breaker (being commonly called as air switch) that uses at present, its course of work is: the manipulation operations handle makes the self-locking gangbar drive the movement arm motion, the contact is connected with the sheet metal of output completes the switch closing course, the gangbar of self-locking simultaneously coordinates with the dropout linkage completes closed self-locking (Fig. 2).For circuit is protected, also be provided with overcurrent action Agency And sheet metal protection mechanism in existing circuit breaker, 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, the self-locking gangbar breaks away from the dropout linkage and completes the circuit breaker disconnection, 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 dropout linkage and rotate; the self-locking gangbar breaks away from the dropout linkage and completes the circuit breaker disconnection, reaches the purpose of protection.But after circuit breaker disconnected, the actuating strut of its overcurrent actuating mechanism or bimetallic sector-meeting recovered reset condition, still exist and need not to find out circuit breaker disconnect cause close circuit breaker again, to such an extent as to burn circuit breaker or cause the defective of fire, as this class accident, repeatedly seen media.
Summary of the invention
The purpose of this invention is to provide a kind ofly when circuit generation overcurrent, after circuit breaker disconnects, must carry out the reset operation circuit breaker with overcurrent self-locking function of close circuit breaker again, to overcome the defective of burning circuit breaker in prior art or causing fire.
To achieve these goals, characteristics of the present invention are: be provided with overcurrent self-locking mechanism in circuit breaker.
Above-mentioned overcurrent self-locking mechanism comprises self-locking mechanism and resetting device, and its self-locking mechanism is to control the mechanism that the dropout linkage keeps the overcurrent protection state, and its resetting device is to make the dropout linkage recover the mechanism of reset condition.
Be provided with overcurrent self-locking mechanism in circuit breaker due to the present invention, make the present invention after overcurrent vreaker disconnection phenomenon occurs, the overcurrent accident occurs to remind the operator in direct close circuit breaker, close circuit breaker again after should ascertaining the reason and deal with problems.The present invention has increased overcurrent self-locking function in the situation that keep original circuit breaker all functions, thus overcome in prior art because of after overcurrent 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 schematic diagram.
Fig. 3 is the embodiment of the present invention 1 closure state structural representation.
Fig. 4 is the embodiment of the present invention 1 self-locking state structural representation.
Fig. 5 is the embodiment of the present invention 2 closure state structural representations.
Fig. 6 is the embodiment of the present invention 2 self-locking state structural representations.
Fig. 7 is the embodiment of the present invention 3 closure state structural representations.
Fig. 8 is the embodiment of the present invention 3 self-locking state structural representations.
In figure: the actuating strut of 1-shell, 2-operating grip, 3-self-locking gangbar, 4-dropout linkage, 5-overcurrent actuating mechanism, 5.1-overcurrent actuating mechanism, 6-bimetal leaf, 7-movement arm, 8-operating point, 9-button, 9.1-button projection, 10-dropout interlock extension bar, 10.1-lengthens pike pole, 10.2-" W " shape groove, 10.3-extension bar groove.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples, but this embodiment should not be construed as limitation of the present invention, and the structure with the design of same overcurrent self-locking mechanism all belongs to protection scope of the present invention.。
The present invention is in the situation that keep former breaker structure constant (all functions are constant); an overcurrent self-locking mechanism is set in circuit breaker in addition to be consisted of; overcurrent self-locking mechanism comprises self-locking mechanism and resetting device; its self-locking mechanism is to control the mechanism that the dropout linkage keeps the overcurrent protection state, and its resetting device is to make the dropout linkage recover the mechanism of reset condition.
Embodiment 1:
Self-locking mechanism of the present invention arranges an extension bar by dropout gangbar upper end and consists of, the upper end of extension bar is provided with one and lengthens pike pole, resetting device is made of button and a cooperation of described extension bar that is built-in with stage clip, described button lower end is provided with a projection, stage clip in button is when oppression state, and the projection of its button lower end is shelved on the lower end (Fig. 3) of described lengthening pike pole.
the operation principle of the present embodiment is: when circuit breaker generation overcurrent, 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, the self-locking gangbar breaks away from the dropout linkage and completes the circuit breaker disconnection, simultaneously, rotation due to the dropout linkage, make the extension bar rotation of dropout linkage upper end, lengthening pike pole on extension bar breaks away from the projection of button lower end, at this moment, due to, stage clip in button recovers, make on the projection of button lower end and move, withstand the top that lengthens pike pole, make the dropout linkage keep overcurrent protection state (Fig. 4), thereby make and both make the closed procedure handle, can not make breaker closing, and complete overcurrent self-locking.If need recovery operation, only need press the button, make the projection of button lower end be shelved on the lower end that lengthens pike pole, the dropout gangbar could be recovered, and just closed procedure handle again, make breaker closing.
Embodiment 2:
Self-locking mechanism of the present invention arranges an extension bar by dropout linkage upper end and consists of, the upper end of extension bar is provided with " W " shape groove longitudinally, resetting device is made of the lever that a button that is built-in with stage clip is connected with the button lower end, stage clip in button is when oppression state, and the other end of its lever is shelved on described extension bar (Fig. 5) in the upper square groove of " W " shape groove hook longitudinally.
the operation principle of the present embodiment is: when circuit breaker generation overcurrent, 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, the self-locking gangbar breaks away from the dropout linkage and completes the circuit breaker disconnection, simultaneously, rotation due to the dropout linkage, make the extension bar rotation of dropout linkage upper end, make the lever that is shelved on move to longitudinally extension bar the upper square groove of " W " shape groove hook longitudinally in the lower square groove of " W " shape groove hook from extension bar, and the top of withstanding the lengthening pike pole, make the dropout linkage keep overcurrent protection state (Fig. 6), thereby make and both make the closed procedure handle, can not make breaker closing, and complete overcurrent self-locking.If need recovery operation, only need press the button, lever is rotated, the other end of lever moves to extension bar the lower square groove of " W " shape groove hook longitudinally in the upper square groove of " W " shape groove hook longitudinally from the lever that is shelved on from extension bar, the dropout gangbar could be recovered, just closed procedure handle again, make breaker closing.
Embodiment 3:
The present invention can be applied to three-phase moulded case circuit breaker (air switch) equally, self-locking mechanism arranges an extension bar by dropout linkage upper end and consists of, be provided with a groove on extension bar, resetting device is made of button and a cooperation of described extension bar that is built-in with stage clip, described button lower end is provided with a projection, stage clip in button is when oppression state, and the projection of its button lower end is shelved in the groove of described extension bar (Fig. 7).
the operation principle of the present embodiment is: when circuit breaker generation overcurrent, 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, the self-locking gangbar breaks away from the dropout linkage and completes the circuit breaker disconnection, simultaneously, rotation due to the dropout linkage, make the extension bar rotation of dropout linkage upper end, the projection that lengthens button lower end in pole gain breaks away from extension bar, at this moment, due to, stage clip in button recovers, make on the projection of button lower end and move, withstand the top of extension bar, make the dropout linkage keep overcurrent protection state (Fig. 8), thereby make and both make the closed procedure handle, can not make breaker closing, and complete overcurrent self-locking.If need recovery operation, only need press the button, the projection of button lower end is shelved in the groove of extension bar, the dropout linkage could recover, and just closed procedure handle again, make breaker closing.
The content that is not described in detail in this specification belongs to the known prior art of this area professional and technical personnel.
Claims (3)
1. circuit breaker with overcurrent self-locking function, be provided with the overcurrent self-locking device in circuit breaker, the overcurrent self-locking device comprises self-locking mechanism and resetting device, its self-locking mechanism is to control the mechanism that the dropout linkage keeps the overcurrent protection state, its resetting device is to make the dropout linkage recover the mechanism of reset condition, it is characterized in that: self-locking mechanism arranges an extension bar by dropout linkage upper end and consists of, and resetting device is made of button and a lever mated that is built-in with stage clip; The upper end of described extension bar is provided with one and lengthens pike pole, and described lever is described extension bar, and described button lower end is provided with a projection, and the stage clip in button is when oppression state, and the projection of its button lower end is shelved on the lower end of described lengthening pike pole.
2. circuit breaker with overcurrent self-locking function, be provided with the overcurrent self-locking device in circuit breaker, the overcurrent self-locking device comprises self-locking mechanism and resetting device, its self-locking mechanism is to control the mechanism that the dropout linkage keeps the overcurrent protection state, its resetting device is to make the dropout linkage recover the mechanism of reset condition, it is characterized in that: self-locking mechanism arranges an extension bar by dropout linkage upper end and consists of, and resetting device is made of button and a lever mated that is built-in with stage clip; The upper end of described extension bar is provided with " W " shape groove longitudinally, resetting device is made of the lever that a button that is built-in with stage clip is connected with the button lower end, stage clip in button is when oppression state, and the other end of its lever is shelved on described extension bar longitudinally in the upper square groove of " W " shape groove hook.
3. circuit breaker with overcurrent self-locking function, be provided with the overcurrent self-locking device in circuit breaker, the overcurrent self-locking device comprises self-locking mechanism and resetting device, its self-locking mechanism is to control the mechanism that the dropout linkage keeps the overcurrent protection state, its resetting device is to make the dropout linkage recover the mechanism of reset condition, it is characterized in that: self-locking mechanism arranges an extension bar by dropout linkage upper end and consists of, and resetting device is made of button and a lever mated that is built-in with stage clip; Be provided with a groove on described extension bar, described lever is described extension bar, and described button lower end is provided with a projection, and the stage clip in button is when oppression state, and the projection of its button lower end is shelved in the groove of described extension bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810048306 CN101620956B (en) | 2008-07-04 | 2008-07-04 | Breaker with overcurrent self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810048306 CN101620956B (en) | 2008-07-04 | 2008-07-04 | Breaker with overcurrent self-locking function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101620956A CN101620956A (en) | 2010-01-06 |
| CN101620956B true CN101620956B (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810048306 Expired - Fee Related CN101620956B (en) | 2008-07-04 | 2008-07-04 | Breaker with overcurrent self-locking function |
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| CN (1) | CN101620956B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620957B (en) * | 2008-07-04 | 2013-03-27 | 湖北盛佳电器设备有限公司 | Breaker with short circuit self-locking function |
| CN104851759B (en) * | 2014-02-19 | 2018-05-01 | 施耐德电气工业公司 | Earth leakage protective device |
| CN105118749A (en) * | 2015-07-11 | 2015-12-02 | 合肥正浩机械科技有限公司 | Mechanical breaker mechanism |
| CN105070615A (en) * | 2015-07-11 | 2015-11-18 | 合肥正浩机械科技有限公司 | Electronic breaker double-breakpoint mechanism |
| CN106952790B (en) * | 2017-05-10 | 2019-04-12 | 中欧电气有限公司 | A kind of breaker self-lock protection mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4603313A (en) * | 1985-08-30 | 1986-07-29 | Westinghouse Electric Corp. | Circuit breaker with replaceable rating plug interlock and push to trip button |
| 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 |
| CN201038091Y (en) * | 2007-03-28 | 2008-03-19 | 冯保明 | Self-locking protector for circuit breaker switching in |
| CN201266583Y (en) * | 2008-07-07 | 2009-07-01 | 湖北盛佳电器设备有限公司 | Circuit breaker with over current self-locking function |
| CN101620957A (en) * | 2008-07-04 | 2010-01-06 | 湖北盛佳电器设备有限公司 | Breaker with short circuit self-locking function |
-
2008
- 2008-07-04 CN CN 200810048306 patent/CN101620956B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4603313A (en) * | 1985-08-30 | 1986-07-29 | Westinghouse Electric Corp. | Circuit breaker with replaceable rating plug interlock and push to trip button |
| 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 |
| CN201038091Y (en) * | 2007-03-28 | 2008-03-19 | 冯保明 | Self-locking protector for circuit breaker switching in |
| CN101620957A (en) * | 2008-07-04 | 2010-01-06 | 湖北盛佳电器设备有限公司 | Breaker with short circuit self-locking function |
| CN201266583Y (en) * | 2008-07-07 | 2009-07-01 | 湖北盛佳电器设备有限公司 | Circuit breaker with over current self-locking function |
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| CN101620956A (en) | 2010-01-06 |
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Granted publication date: 20130515 Termination date: 20210704 |