Motor device

Abstract

The invention discloses a motor device, comprising a stator part and a rotor part, wherein the rotor part is arranged in an inner ring of the stator part; magnetic action is generated between the rotor part and the stator part so that the rotor part rotates in the inner ring of the stator part; the rotor part comprises a rotor iron core; the rotor iron core is integrally formed from magnetic powder through a powder metallurgy process; the magnetic powder is a soft magnetic material with a core-shell structure; and the soft magnetic material comprises a core main body for supplying magnetic force and a shell layer for supplying connection intensity. According to the motor device disclosed by the invention, the rotor part is structurally improved; therefore, the rotor part is not influenced by a coil; the winding turn number or wire diameter can be increased; the motor torque and rotation speed can be increased; the magnetic energy loss can be reduced effectively; on the premise of having the same unit output power, the size of the motor is reduced; and the design concept of the traditional motor rotor is broken through.

Description

technical field [0001] A motor device, especially a direct current motor device. Background technique [0002] refer to figure 1 . figure 1 It is a three-dimensional sectional view of a conventional motor device. The conventional motor device 1 is provided with a stator part 14 and a rotor part 12 inside the housing 10 , the rotor part 12 has a rotor core 121 , and the rotor core 121 is provided with a rotor coil 122 . The axis of the rotor core 121 provides a rotating shaft 16 , so that the rotating shaft 16 can be driven by the rotating rotor core 121 . [0003] Cooperate figure 1 ,refer to figure 2 . figure 2 It is a three-dimensional schematic diagram of a rotor core of a conventional motor device. The rotor core 121 is formed by punching and stacking a plurality of silicon steel sheets 1210 . The rotor core 121 is formed by stacking a plurality of silicon steel sheets 1210. The upper surface and the lower surface of the rotor core 121 are respectively placed w...

AI Technical Summary

Problems solved by technology

[0004] However, the structure of this rotor core 121 will have the following problems: (1) The rotor core 121 is made of a plurality of silicon steel sheets 1210 stacked to form a magnet, which is extremely time-consuming to manufacture and reduces the magnetic properties of the raw material

(2) When the rotor core 121 is wound with coils, the wire wraps on the upper surface and the lower surface will reduce the magnetic absorption effect of the magnet, thereby affecting the rotational force and speed of the rotor core 121

(3) In terms of production, only the rotor core 121 with a constant cross-section shape can be produced. If a rotor core 121 with a non-uniform cross-section shape is to be produced, more stamping die sets are required to cooperate, resulting in an increase in production and assembly costs.

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