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Intelligent miniature circuit breaker
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A miniature circuit breaker, intelligent technology, applied in the direction of circuit breaker components, circuit breaker contacts, protective switch terminals/connections, etc., can solve the problems of space occupation, collision between teeth, unreliable action, etc.
Pending Publication Date: 2021-08-20
GUIZHOU TAIYONG CHANGZHENG TECH CO LTD
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Abstract
Description
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Problems solved by technology
At present, the ordinary miniature plug-in circuit breakers in the power distribution industry have the following problems: in the existing circuit breakers, the electric operation structure adopts motor-driven multi-stage gear transmission to reduce speed. The multi-stage gear structure not only occupies the space position, but does not meet The development trend and requirements of the miniaturization of the circuit breaker, and when the circuit breaker is switched manually and automatically, there is collision and wear between the teeth, and the operation is unreliable for a long time
Secondly, the current samplin
Method used
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Embodiment 1
[0032] like Figure 1-3 As shown, an intelligent miniature circuit breaker of the present invention includes a casing 1, an incoming line terminal 2, an outgoing line terminal 3, a static contact 4, a moving contact operating mechanism 5, an arc extinguishing system 6, an electric operating mechanism, and an overload protection mechanism 15. Short circuit protection mechanism 16, current sampling device 17, button mechanism, circuit board 21.
[0033] The housing 1 is a conventional component of a circuit breaker, and is used for carrying and installing various components of the circuit breaker.
[0034] The incoming line terminal 2 and the outgoing line terminal 3 are arranged at the left and right ends of the casing 1 and are conventional components of a circuit breaker, adopting a conventional structure, wherein the incoming line terminal 2 is two 8PIN connectors, and one incoming line terminal 2 is arranged inside the casing 1 The upper left is electrically connected to t...
Embodiment 2
[0050] The difference between this embodiment and Embodiment 1 is:
[0051] like figure 1 As shown, the intelligent miniature circuit breaker also includes a circuit board 21 arranged between the outlet terminal 3 and the electric operating mechanism and provided with a control circuit. The control circuit on the circuit board 21 can drive the motor 7 to rotate. The left end of the circuit board 21 extends to the left to the bottom of the current sampling device 17 . like Figure 9 As shown, there are three pins plugged into the circuit board 21 at the bottom of the current sampling device 17; each pin is provided with a step. The width of the part where the current sampling device 17 is inserted into the circuit board 21 is smaller than the overall width of the current sampling device 17 .
Embodiment 3
[0053] The difference between this embodiment and embodiment two is:
[0054] like figure 1 , Figure 4 As shown, a micro-break switch 22 is provided on the circuit board 21 at a position corresponding to the turbine 9 . The side wall of the worm wheel 9 is provided with the rib three 26 positioned at the rear of the rib one 24 and positioned at the lower side of the rib two 25, and the rib three 26 can rotate with the worm wheel 9 to toggle the micro-break switch on the circuit board 21 22. Make the circuit breaker energized and de-energized.
[0055] When rib three 26 rotates clockwise from the left side of micro-break switch 22 to the right side of micro-break switch 22 along with worm wheel 9, the circuit breaker is closed at this time, rib three 26 toggles the micro-break switch, and micro-break switch 22 will open the circuit The closing state signal of the circuit breaker is transmitted to the circuit board 21, and the circuit board 21 controls the closing signal lam...
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Abstract
The invention provides an intelligent miniature circuit breaker, which comprises a shell, a wire inlet terminal, a wire outlet terminal, a static contact, a moving contact operating mechanism, an arc extinguishing system, an electric operating mechanism, an overload protection mechanism, a short circuit protection mechanism, a current sampling device and a button mechanism, and is characterized in that the electric operating mechanism comprises a motor, a worm, an inner handle, a torsion spring, a worm gear, a swing rod and a reset tension spring; the motor is mounted in the shell; the worm is mounted on a rotating shaft of the motor; the inner handle is rotatably mounted in a mounting groove preset on the shell; the inner handle is connected with the moving contact operating mechanism and the button mechanism through a jump pin pull rod and a long pull rod respectively; the torsional spring is mounted in a mounting groove in the rear part of the inner handle; the worm gear is arranged outside the inner handle, and gear teeth outside the worm gear are matched with the worm; the swing rod is installed between the worm gear and the moving contact operating mechanism; and the reset spring is arranged between the swing rod and the shell in a pulling mode. The circuit breaker is compact in structure, small in occupied space, easy to install, stable and reliable in action and capable of meeting the requirement of a communication cabinet for space.
Description
technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and in particular relates to an intelligent miniature circuit breaker. Background technique [0002] 5G communication is a strategic industry supported by the state, and 5G network construction is in full swing. At present, the ordinary miniature plug-in circuit breakers in the power distribution industry have the following problems: in the existing circuit breakers, the electric operation structure adopts motor-driven multi-stage gear transmission to reduce speed. The multi-stage gear structure not only occupies the space position, but does not meet The development trend and requirements of miniaturization of circuit breakers, and when the circuit breaker is switched manually or automatically, there is collision and wear between the teeth, and the long-term operation is unreliable. Secondly, in the existing circuit breaker, its current sampling device is realized by a ...
Claims
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Application Information
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