| 摘要 |
PURPOSE:To obtain large driving force by forming a balanced type electromagnetic converter of the side wall of a groove symmetrically arranged to a magnetic pole and a drive coil wound on the base of the groove and shaping an electrodynamic type converter by the base of the groove and the drive coil wound on the base of the groove. CONSTITUTION:N and S magnetic poles are fitted to the inner circumferential sections of the upper and lower surfaces of one magnet 14. First and second grooves 18, 18' are formed where oppositely faced to the inner circumferential surfaces of a top plate 15 and a bottom plate 16 on the outer circumferential side surface of a cylindrical magnetic vibrator 17 consisting of a magnetic material. Two balanced type electromagnetic converters are shaped by two side walls of the grooves 18, 18' symmetrically disposed to the N or S magnetic pole and drive coils 19, 19' wound on the bases of the grooves 18, 18', and electrodynamic type converters are formed by the bases of the grooves 18, 18' and the drive coils 19, 19'. |
