| 摘要 |
<p>PURPOSE:To lighten the concentration of stress by the centrifugal force at rotation by enlarging the curvature of the corner at the bottom of the groove for winding of a rotating transformer. CONSTITUTION:This rotating transformer, where magnetic cores in pairs having a plurality of windings arranged coaxially are counterposed in planar shape or circumferential shape, fulfills r>0.4 and w>=2r at the same time as to one part of all of a plurality of grooves, defining that the curvature of the corner of the bottom in each cross section of a plurality of grooves for accommodating the winding of the magnetic core is r and that the width of the groove is w. And, further the sidewalls of the cross section of the groove for accommodating the winding of the magnetic core are constituted so that they may be parallel with each other or so that they may be aslant with the aperture wider than the bottom. Hereby, the stress concentration at the corner of the bottom of the groove is lightened, and the tensile strength is improved, and the use at high-speed revolution becomes possible.</p> |
