Interlocking device of plug-in circuit breaker
A technology of interlocking device and circuit breaker, which is applied in the direction of emergency protection devices, circuits, and parts of protective switches. It can solve problems such as safety accidents, difficulty in pulling out, and inconvenient operation, and achieve the effect of avoiding misoperation.
Pending Publication Date: 2020-03-24
浙江明晖智能电气有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] But at present, the plug-in circuit breaker has no plug-in structure, and it is difficult to pull out after being installed in the cabinet. It needs to rely on external force or additional tools, which is inconvenient to operate. At the same time, the plug-in circuit breaker has no on-off status indication. When the plug-in circuit breaker is pulled out from the cabinet, it is easy to cause serious safety accidents
Method used
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Embodiment Construction
[0028] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:
[0029] As shown in the figure, an interlocking device of a plug-in circuit breaker includes a casing 1 , a handle 2 , a rotating shaft 3 , a connecting rod 4 , a closing lock mechanism 5 , and an operation lock mechanism 6 .
[0030] The handle 2 is hinged on the outer end of the housing 1, and is linked to the rotating shaft 3 through the connecting rod 4. The rotating shaft 3 can be linked to the operating mechanism, and the opening and closing action of the plug-in circuit breaker can be realized by operating the handle 2.
[0031] Wherein, the handle 2 is set to have a first position standing upright relative to the housing 1 when the brake is opened, and a second position fitting to the housing 1 when closing the brake. When the handle 2 is in the first standing position, then Indicates that the plug-in circuit breaker is in the opening state at this ti...
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The utility model relates to an interlocking device of a plug-in circuit breaker. The interlocking device is characterized in that a handle has a first position which is erected relative to the outerside end of a shell during opening and a second position which is attached to the outer side end of the shell during closing. The interlocking device is advantageous in that the handle can play a clear indication effect on the position state of opening and closing; and the handle can be used as a drawing operation structure for drawing the plug-in circuit breaker out of the cabinet, so that when the plug-in circuit breaker is drawn through the handle, the handle is inevitably located at the erected first position, it is ensured that the plug-in circuit breaker is in a switching-off state whenbeing drawn out, misoperation is avoided, and safety and reliability are achieved.
Description
technical field [0001] The invention relates to a circuit breaker, in particular to an interlocking device of a plug-in circuit breaker. Background technique [0002] Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, etc., and generally does not need to change parts after breaking the fault current, has been widely used. [0003...
Claims
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IPC IPC(8): H01H71/04H01H71/10
CPCH01H71/04H01H71/1009
Inventor 刘磊李焰锋李敏张罗丁国辉师建轩
Owner 浙江明晖智能电气有限公司