Direct current (DC) motor rotor structure and processing method

Abstract

The utility model provides a direct current (DC) motor rotor structure and a processing method, belonging to the field of manufacture technology of the motor, wherein the DC motor rotor structure comprises a rotor iron core (6) with partitioned permanent magnets (1); the external ring of the rotor iron core (6) is provided with convex plates (7) uniformly; the partitioned permanent magnets (1) are embedded between adjacent convex plates (7); the external round of the partitioned permanent magnets (1) is fixedly surrounded by a hoop (2); the hoop (2) between the adjacent partitioned permanent magnets (1) is an internally concave structure (8); the processing method comprises the steps of firstly installing the partitioned permanent magnets (1) on the rotor iron core (6) respectively, sheathing the hook (2) into the external surface of the partitioned permanent magnets (1) subsequently, finally applying pressure towards the inside of the hoop (2) by an external pressing process equipment so as to lead the hoop (2) to deform under the action of the pressing head, and forming an internal concave structure (8) at the position between the partitioned permanent magnets (1). The DC motor rotor structure has reasonable design, effectively keeps stable and reliable structure of the rotor and improves the quality of the motor.

Description

technical field [0001] The invention relates to a DC motor rotor structure and a processing method, belonging to the technical field of motor manufacturing. Background technique [0002] In the rotor structure of the existing DC motor, since the rotor core does not have the rotor core protrusion 7, when the segmented permanent magnet 1 is installed on the rotor core 6, the positioning is difficult, and the distribution of the segmented permanent magnet 1 is likely to be uneven, which affects the The overall performance of the motor. And the segmented permanent magnet 1 is connected with the rotor core 6 by glue bonding, or the outer arc of the permanent magnet is wound and fixedly connected with a latitude-free tape. The temperature of the motor will increase due to the operation of the motor, and the glue will be viscous after being subjected to high temperature. It will decrease and the adhesive force will fail, and the tensile force of the non-woven belt will also be gre...

AI Technical Summary

Problems solved by technology

[0002] In the rotor structure of the existing DC motor, since the rotor core does not have the rotor core protrusion 7, when the segmented permanent magnet 1 is installed on the rotor core 6, the positioning is difficult, and the distribution of the segmented permanent magnet 1 is likely to be uneven, which affects the Comprehensive performance of the motor

And the segmented permanent magnet 1 is connected with the rotor core 6 by glue bonding, or the outer arc of the permanent magnet is wound and fixedly connected with a latitude-free tape. The temperature of the motor will increase due to the operation of the motor, and the glue will be viscous after being subjected to high temperature. It will decrease and the adhesive force will fail, and the tensile force of the non-woven belt will also be greatly reduced after being subjected to high temperature. When the motor is running, the block permanent magnet 1 has an outward force, which is easy to separate from the rotor core 6, causing safety hazards such as motor jamming.

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