永久磁石を利用した内・外接共役かみ合い磁気歯車の磁気力発生機構

抄録

A magnetic gear using a permanent magnet has many advantageous performance characteristics, such as absorption of vibration, noiselessness and oilless operation. Further, a magnetic gear designed as an internal meshing gear can be used as an external meshing gear by changing the center distance.
This paper is explains the mechanism whereby a magnetic force arises in a meshing area composed of a main contact zone and an intersecting zone when the gear is changed from internal meshing to external meshing.
It is found that the composition of the magnetic flux density and polarity distribution, namely, "the magnetic tooth", is useful for investigating the mechanism whereby the magnetic force arises. The magnetic force is decreased by about 10-30% when the gear is changed from internal meshing to external meshing; this causes no problems in practical use.