Improved motor roller reversing structure

Abstract

The invention discloses an improved motor roller reversing structure. The improved motor roller reversing structure comprises a motor shell, belonging to the motor field. A bearing sealing cover is fixedly arranged at the position, close to a rotating shaft, of the motor shell; a motor armature is fixedly arranged in the motor shell, and a conductive roller commutator is inlaid and fixed at the inner side wall of the motor armature; the inner side wall of the conductive roller commutator is attached to the outer side wall of the conductive roller commutator; and a conductive roller mode is adopted to replace a traditional carbon brush mode. The commutation mode changes the original sliding friction to rolling friction to greatly reduce the wearing of the motor, improves the reliability ofthe motor, especially improve the high-speed performance and the reliability at the high speed of the motor. The design core key point of the conductive roller is the sliding friction connection between an electric contact and a rotation cover, the center rotation and tapered surface connection modes are adopted, the center rotation mode is adopted to minimize the sliding friction amount, and thetapered surface obtains the large contact conductive area on the basis of not increasing the contact radius.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to an improved motor roller reversing structure. Background technique [0002] The DC motor has high efficiency and large torque, and can generate controllable torque at any speed, and can accurately realize drive control. The principle is to generate torque under the action of the electromagnetic force in the magnetic field through the conductor of the current. The DC motor is mainly composed of an armature and a commutation device composed of an excitation device, a current-carrying winding and an iron core. The function of the commutation device is to complete the In the magnetic field, the current direction of the rotating armature coil winding is first changed, so that the current direction of the armature coil winding changes during the process of passing through the N and S poles of the magnetic field, so as to obtain the torque in the same direction. [0003] The...

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Problems solved by technology

[0003] The commutation of the existing motor is realized by the sliding friction of the carbon brush on the conductive roller commutator. The frictional movement of the carbon brush on the conductive roller commutator generates a large amount of heat, which causes the wear of the conductive roller commutator and the carbon brush. At the same time, copper and carbon powder and other substances produced by wear and tear pollute the inside of the motor, causing problems such as short circuit of the conductive roller commutator, insulation reduction, and contamination of the lubricating part.

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