Motor with improved commutator structure

Abstract

The invention relates to the technical field of motors. The invention aims to provide a motor with an improved commutator structure, which can improve the contact stability of a commutator and an electric brush. The commutator comprises an insulating mounting ring which sleeves a rotating shaft, and a plurality of pairs of fan-shaped conductive frames which are annularly and uniformly arranged onthe insulating mounting ring; the inner ends of the conductive frames are fixedly connected with the insulating mounting ring and the rotating shaft through insulating bolts; the area between the conductive frames is filled with insulating resin; and the outer end faces of the conductive frames and the outer surface of the insulating resin jointly form an annular contact face making contact with the electric brush. By filling the gaps of the commutator, the outer surface of the commutator integrally forms an annular contact surface. When the commutator is in contact with the electric brush, the abrasion between the commutator and the electric brush can be reduced. The service life of the electric brush is prolonged, and the contact stability of the electric brush is improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor with an improved commutator structure. Background technique [0002] DC motor is a type of motor widely used in daily production and life. It usually includes housing, stator, rotor, commutator, brush and other components. The stator usually adopts permanent magnet or directional electromagnetic coil group, which is fixedly installed in the housing. , providing the magnetic force for the rotor. The rotor is usually composed of several groups of electromagnetic coils and magnetic cores wound on it, and interacts with the stator when excited to form a rotational force. The commutator is installed on the rotor, and it usually consists of multiple arc-shaped conductive sheets to form a ring, which is connected to the electromagnetic coil on the rotor and connected to the power supply through the brush. The DC motor has the characteristics of good starting and speed regulatio...

AI Technical Summary

Problems solved by technology

[0004] 2. The traditional commutator is a ring structure composed of multiple sections. The gap between two adjacent sections forms the commutation area of ​​the commutator, but it is also due to the existence of the gap that the commutator is constantly rotating. And in the process of contacting with the brush, there is a large wear on the brush at the edge of the gap, which causes the brush to wear too fast, and also causes the contact between the brush and the commutator to be unstable

[0005] 3. In order to adapt to underwater working conditions, the existing motor must ensure the sealing of its shell to prevent water from penetrating into the motor and causing damage to electrical components

However, for deep water and ultra-deep water operations, due to the increase of external water pressure, the conventional sealing ring can no longer guarantee the reliability of its sealing, especially the reliability of the dynam

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