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Breaking and closing brake driving device of miniature circuit breaker

A technology of small circuit breakers and driving devices, which is applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of restricting product price competitiveness and rising costs, and achieve the effects of reliable tripping, simplified structure, and cost reduction

Pending Publication Date: 2019-09-10
XIAMEN SHANXIU SUNSHINE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The setting of multiple position detection components will increase the cost, which limits the price competitiveness of the product for large-volume demand occasions, such as the application on cost-controlled circuit breakers

Method used

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  • Breaking and closing brake driving device of miniature circuit breaker
  • Breaking and closing brake driving device of miniature circuit breaker
  • Breaking and closing brake driving device of miniature circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 1 ~ Figure 3 As shown, this embodiment discloses a small circuit breaker opening and closing drive device, including a housing 1, a circuit board 2 arranged on the housing 1, a motor 3, a transmission gear assembly 4, a transmission member (including a transmission shaft 5 And the transmission main body 6), the final gear 7, the position detection element 8 and the tripping piece 9. The motor 3 is electrically connected to the circuit board 2 , and the motor 3 drives the final gear 7 through the transmission gear assembly 4 .

[0041] Such as figure 2 As shown, the transmission gear assembly 4 includes a worm 41 , a worm wheel 42 and several reduction gears 43 . The worm 41 is fixed or integrally arranged on the output shaft of the motor 3 , the worm gear 42 meshes with the worm 41 , the worm wheel 42 meshes with the reduction gear 43 , and several stages of reduction gears 43 mesh with the final gear 7 after meshing in turn. The final gear 7 has the...

Embodiment 2

[0052] Such as Figure 16 As shown, the difference between this embodiment and the first embodiment is that the hollow shaft 72 of the final gear 7 of this embodiment is also provided with an intermediate antenna 723 , which is located on the same plane as the opening antenna 721 and the closing antenna 722 . When the final gear 7 is in the middle position, the middle feeler 723 on the final gear 7 touches the position detection element 8, which means that the final gear 7 is in the middle position at this time.

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Abstract

The invention discloses a breaking and closing brake driving device of a miniature circuit breaker. The breaking and closing brake driving device comprises a shell, a circuit board, a motor, a transmission gear assembly and a clutch connection mechanism, wherein the circuit board, the motor, the transmission gear assembly and the clutch connection mechanism are arranged on the shell, the motor iselectrically connected with the circuit board, the motor is used for achieving driving of the clutch connection mechanism by the transmission gear assembly, the clutch connection mechanism comprises alast-stage gear and a transmission piece, the last-stage gear is arranged at a tail end of the transmission gear assembly and is engaged with the transmission gear assembly, one end of the transmission piece extends out of the shell and is connected with a circuit breaker handle, the last-stage gear, the transmission piece and the circuit breaker handle are coaxially arranged, and the transmission piece is driven to rotate by the last-stage gear. By arranging the clutch connection mechanism at the last stage, and position detection and control are facilitated.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a small circuit breaker opening and closing drive device. Background technique [0002] Miniature circuit breaker, referred to as MCB, is the most widely used terminal protection device in the electrical terminal distribution device. The opening and closing drive module is the electric operating mechanism. It is an accessory used to control the opening and closing of the MCB. It can realize the remote electric opening and closing of the circuit breaker. At present, the most commonly used method is to use the motor Acceleration and deceleration mechanism to achieve. [0003] The patent with the publication number CN203277259U discloses an electric operating mechanism of a circuit breaker. In the second-stage gear, two coaxial gears with clutch function are used, wherein the coaxial driving wheel is first rotated forward to drive, driving The handle of the circuit breake...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10H01H71/12H01H71/50
CPCH01H71/10H01H71/12H01H71/50
Inventor 杨平孝陈清槐周素珍
Owner XIAMEN SHANXIU SUNSHINE TECH CO LTD
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