Direct current electrical motor

A DC motor and casing technology, applied in the field of motors, can solve the problems of insufficient power of micro DC motors, etc., and achieve the effects of enhancing portability, reducing production costs, and eliminating waste of materials

Inactive Publication Date: 2017-05-31
SHAOXING HISTREN MICROMOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some specific occasions that require small size and high power, if the existing small DC motor meets the power requirements, but the volume is too large; the size of the micro DC motor is suitable, and there are cases where there is insufficient power

Method used

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  • Direct current electrical motor
  • Direct current electrical motor
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Examples

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Embodiment 1

[0018] This embodiment includes a metal casing and a rotor, a stator and a rotating shaft arranged in the metal casing. The rotor is composed of laminated iron sheets and windings wound on the iron sheets. The stator is a number of paired magnets fixed on the inner surface of the metal casing. The paired magnets are close to the inner surface of the metal casing and are evenly distributed around. A ring-shaped yoke is arranged between the stator and the metal casing, and the yoke surrounds and evenly distributes on the inner surface of the metal casing. The rotor is arranged at the center of the surrounding pair of magnets, and is arranged in cooperation with the magnets. A rotating shaft is fixedly pierced through the center of the rotor, and when the rotor rotates under the action of magnetic force, the rotating shaft and the rotor rotate together. Such as figure 1 As shown, in this embodiment, let the radial thickness of the magnet be T, the axial thickness (diameter) of ...

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PUM

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Abstract

The invention provides a direct current electrical motor and belongs to the field of electrical motors. The direct current electrical motor comprises a cylindrical metal casing, a stator formed by magnets closely attached to the inner surface of the metal casing and annularly and symmetrically distributed as well as a rotor arranged at the center of the stator, wherein the rotor and the stator are in clearance fit; the rotor comprises an iron core lamination and a rotating shaft fixedly connected with the iron core lamination, the radial thickness of each magnet is T, the outer diameter of the iron core lamination is d, and the ratio of the radial thickness T of each magnet to the outer diameter d of the iron core lamination is smaller than 0.16. Through qualitative processing and optimization of the ratio of the magnet thickness to the outer diameter of the iron core lamination, the weakening effect of a winding electromagnetic pole on the permanent magnetic field produced by the magnets can be reduced, the performance of the electrical motor is improved, the maximum torque of the electrical motor in the same size can be increased to at least 150 mN.m, the output power of the direct current electrical motor is increased, and the use performance of a miniature or small electrical motor is greatly improved, so that the direct current electrical motor is applicable to small-size and high-power occasions.

Description

technical field [0001] The invention relates to the field of motors, in particular to a DC motor. Background technique [0002] The DC motor consists of a metal casing, a stator composed of magnets, and a rotor composed of laminated iron cores and windings. The commutator changes the direction of the winding current to drive the rotor to rotate. However, the existing small DC motors are large in size and low in power. Reducing the volume of the motor and maintaining the power of the original size motor will be the development trend of the motor in the future. The power of the existing miniature DC motor is 250~400W. For some specific occasions that require small size and high power, if the existing small DC motor meets the power requirements, but the volume is too large; the size of the micro DC motor is suitable, and there is a situation of insufficient power. [0003] Based on this, this application is filed. Contents of the invention [0004] In order to overcome the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K23/40H02K1/17H02K1/22H02K5/04
CPCH02K23/40H02K1/17H02K1/22H02K5/04H02K2213/03
Inventor 江磊杨锋程伟民
Owner SHAOXING HISTREN MICROMOTOR
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