A method of making a brushless commutator-free small motor

Abstract

A method for making a brushless and commutator-free small motor, which is composed of a rotor, a rotor bracket, a battery box, a magnet and a switch. The rotor is wound into a multi-turn ring by an enameled wire, and the two ends of the enameled wire are completely stripped of the enameled wire. The foreskin is used as the rotor shaft, and one end of the insulated sheathed wire is removed and wound into a solenoid as a shaft support tube. The insulated sheathed wire is vertically fixed on the battery box as the rotor support, and the other end of the insulated sheathed wire is connected to the battery through a switch. Both ends; the extension line of the rotor shaft does not coincide with the center of gravity of the rotor, the rotor shafts at both ends of the rotor are on the same straight line, and the natural state of the rotor after the rotor shaft is placed in the shaft support tube at both ends of the rotor is the coil plane of the rotor In the vertical plane, the N pole or S pole of the magnet is close to the coil of the rotor, and the centrifugal force generated by the rotation of the rotor changes the pressure of the rotor shaft on the support tube of the shaft, realizing a method of making and demonstrating a small motor that automatically adjusts the current.

Description

technical field [0001] This patent relates to a method for manufacturing a brushless and commutator-free small motor, which belongs to the field of physical demonstration experiment instruments. Background technique [0002] There are many applications of brushed DC micro motors and brushless motors. Products such as aircraft models, toys, personal care, security and so on will use brushed DC micro motors. The basic difference between brushed micro DC motors and brushless motors is one There are brushes and a brushless brush. In scientific works or physics teaching, brushed DC micro motors are first introduced. The mechanical commutation used by brushed micro DC motors is based on the principle that the magnetic poles do not move, the coil rotates, and the micro When the motor is running, the coil and the commutator rotate, the magnet and the brushes do not rotate, and the current direction of the coil is accomplished by alternately changing the commutator and the brush that...

AI Technical Summary

Problems solved by technology

Up to now, most of the enameled wires are used to make this model easily in physics teaching or scientific and technological creation, so that the physical principle demonstration is intuitive and clear, and the teacher tells the students that the rotor shaft drawn by the enameled wire in the rotor should be in the enameled wire (cylindrical If the paint (insulating paint) is peeled off half of the side of the rotor shaft, otherwise the demonstration motor cannot be rotated. This conclusion restricts the creativity of the students. Continuous directional rotation can also be achieved under the same circumstances? On the basis of the above, those skilled in the art often give "it cannot rotate"; for this reason, the solution proposed in this patent is that the rotor can realize continuous directional rotation. Credible demonstration experiments, how to achieve rich demonstration content, obvious visual effects, credible demonstration experiment instruments and methods, this patent will solve this problem

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