Patent ID: 6944929
Filing Date: 2005-09-20
Classification: H01F,H02K,Y10T

Abstract:
1. A method of joining a rubber magnet to a yoke comprising the steps of: applying an adhesive to an inner peripheral surface of a cylindrical peripheral wall section of said yoke; forming a cylindrical rubber magnet by rolling a plate-like rubber magnet into a cylindrical shape; and inserting said cylindrical rubber magnet into said yoke to join said cylindrical rubber magnet to said inner peripheral surface of said yoke by sliding an outer peripheral surface of said cylindrical rubber magnet over said inner peripheral surface of said peripheral wall section; wherein said cylindrical rubber magnet has a plurality of grooves formed in said outer peripheral surface at predetermined intervals in a peripheral direction of said cylindrical rubber magnet, said grooves extending in said outer peripheral surface in a direction in which said cylindrical rubber magnet is inserted into said yoke and being open on both ends of the direction of insertion and being also open outwardly in a radial direction of said cylindrical rubber magnet.