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Coreless motor having rotors arranged concentrically and driving apparatus having the motor

A technology of rotor and connecting device, applied in the field of driving device

Inactive Publication Date: 2009-08-19
朴桂正
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention serves to solve the aforementioned problems

Method used

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  • Coreless motor having rotors arranged concentrically and driving apparatus having the motor
  • Coreless motor having rotors arranged concentrically and driving apparatus having the motor
  • Coreless motor having rotors arranged concentrically and driving apparatus having the motor

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Embodiment Construction

[0053] Hereinafter, a coreless motor with a multi-stage rotor and a driving device according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0054] First, a coreless motor having a multi-stage rotor according to the present invention will be described.

[0055] figure 1 To show a cross-sectional view of a motor with a multi-stage rotor according to a specific embodiment of the invention, figure 2 for figure 1 A side sectional view of the motor shown in , and image 3 for showing figure 1 A perspective view of the arrangement of the armature coil assembly and magnets of the motor shown in .

[0056] figure 1 The motor 70 in includes a rotating shaft 10 , a rotor 20 and a stator 50 .

[0057] The rotor 20 includes yokes 21 , 23 , 25 and 27 , magnets 29 , 31 , 33 , 35 , 37 and 39 , and a rotating disc 41 . The rotating disc 41 is fixed to said rotating shaft 10 . The yokes 21 , 23 , 25 and 2...

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Abstract

The present invention relates to a coreless motor including a multi-stage rotor and a driving apparatus having the motor. More particularly, the present invention relates to a coreless motor including magnets and coils arranged, in multiple stages, to be concentric with a rotary central shaft and a driving apparatus having the motor. According to an aspect of the present invention, a coreless motor including a multi-stage rotor comprises a rotor and a stator. The rotor includes a plurality of cylindrical yokes arranged in multiple stages in a radial direction, and a plurality of magnets fixed to the yokes in the respective stages in such a manner that polarities of the magnets fixed to the yoke in each stage are changed in a circumferential direction of the yoke. Further, the stator includes a plurality of cylindrical armature coil assemblies arranged in multiple stages to face the yokes, and each armature coil assembly includes a plurality of armature coils. The armature coils can be rigidly fixed using an epoxy resin to maintain their rigidity. Thus, the motor can produce power in a highly efficient way since it includes the multi-stage rotor and stator. Further, since the motor does not include a core, no cogging torque is produced to prevent the reduction of output torque and the output torque is kept constant to suppress noise and vibration.

Description

technical field [0001] The present invention relates to a coreless motor including a multistage rotor and a driving device having the same. More particularly, the present invention relates to a coreless motor including magnets and coils arranged in multiple stages to be concentric with a rotation center axis, and a drive device having the same. Background technique [0002] attached Figure 12 Schematic diagram of the principle of the traditional motor. A conventional motor includes a central shaft 1 , a stator 5 and a rotor 3 composed of a yoke 4 and a permanent magnet 2 fixed to the yoke 4 and rotatably connected to the central shaft 1 through a bearing 6 . The permanent magnets 2 are connected to the yoke 4 in such a manner that their polarities are opposite to each other. [0003] The stator 5 is formed by winding a coil around an armature core, and is fixed to the center shaft 1 . Thus, if a current is applied to the coil, a magnetic field is formed around the coil. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K47/00
CPCH02K3/47H02K29/03H02K16/00H02K21/12B60L15/20B60L2200/12B60L2220/44B60L2240/423B60L2240/80B60L2270/142B60L2270/145Y02T10/64Y02T10/72H02K16/02
Inventor 朴桂正
Owner 朴桂正