Importance

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Abstract

The present invention provides a method of winding an armature coil on a cylindrical resin insulator of coreless motors while improving magnetic flux efficiency of the coil. This method allows a resulting motor to effectively generate desired torque by an application of a low current, thus conserving electricity. This method also simplifies the production process of the coreless motors, thus reducing the production cost of the motor and improving productivity and economical efficiency of the motors. In order to wind an armature coil on an insulator, the coil is repeatedly wound on the insulator, with each turn of the coil linearly extending on the upper surface, vertically extending down on the sidewall and linearly extending on the lower surface prior to vertically extending up on the sidewall of the insulator. In another embodiment, the coil may be repeatedly wound on the insulator in a way such that each turn of the coil extends on the upper surface while passing over the sidewall of an upper center projection of the insulator, vertically extends down on the sidewall and extends on the lower surface while passing over the sidewall of a lower center projection prior to vertically extending up on the sidewall of the insulator.

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First Claim