Drive device with electric furl

Abstract

A driving device with an electric retracting device comprises a shell body, a permanent magnet DC brushless motor, a reducer, a power transmission component and a driving machine. The permanent magnet DC brushless motor, the reducer and the power transmission component are arranged in the shell body. Two ends of the power transmission component are respectively connected with the permanent magnetDC brushless motor and the reducer. The driving machine is electrically connected with the permanent magnet DC brushless motor. Owning to the design, the driving device is helpful to realize the efficacies of miniaturization, lightweight, strong bearing capacity, saving energy, low copper loss, no spark and low noises.

Description

technical field [0001] The present invention relates to a driving device with electric retraction, more specifically, the structural improvement of the driving device for the electric retraction mechanism. Background technique [0002] In daily life, many products have retracting mechanisms, such as Roman blinds, horizontal venetian blinds, projection screens, and iron rolling doors. With the rapid development of technology, consumers have higher requirements for the quality of life. Many retracting mechanisms that used manpower in the early stage have been gradually replaced by electric retracting mechanisms. The current electric retracting mechanisms all use induction motors or DC motors. A brush motor is used as the drive unit. [0003] When an induction motor is used as a driving device, since the induction motor must use more manufacturing materials, such as silicon steel sheets and induction coils, the manufacturing cost is relatively high, and the volume and weight a...

AI Technical Summary

Problems solved by technology

[0003] When using an induction motor as a driving device, since the induction motor must use more manufacturing materials, such as silicon steel sheets and induction coils, the manufacturing cost is relatively high and the volume is relatively small large and heavy

On the other hand, the induction motor will produce relatively high rotor copper loss and high noise during operation, and the torque performance at low speed operation is also insufficient. bad

On the other hand, the induction motor cannot immediately stop at the predetermined position when the power is cut off, and the design of the brake structure must be added, which increases the manufacturing cost and the trouble of assembly.

[0004] In addition, when using a brushed DC motor as the drive device, since the brushed DC motor has carbon brushes and commutators, the carbon brushes continuously grind the commutator, causing carbon brush pollution

The sparks generated by the carbon brush when it leaves the commutator will cause electromagnetic interference, which will interfere with other electronic equipment, and the carbon brush and commutator are easy to wear out, requiring more maintenance time and cost

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