of fig1 referring to fig1 and 2 together a lead board 5 is disposed on a fixed bed 101 a piezoelectric element 1 is joined to a vibrating body 106 and a plurality of electrodes 2 are pattern formed on piezoelectric element 1 the vibrating body 106 is guided by a center shaft 102 and is supported fixedly on the center shaft 102 in the vicinity of the center of body 106 so as to be assembled with the fixed bed 101 on which the lead board 5 is arranged before assembly in the motor the lead board 5 is provided with conductive patterns 3 for contacting the plurality of electrodes 2 formed on the piezoelectric element 1 a moving body 104 is guided by center shaft 102 for rotation relative to center shaft 102 and body 104 is capable of rotating by contacting vibrating body 106 with a predetermined pressure produced by a pressing member 105 that bears against body 104 at a point along the axis of shaft 102 an elastic body such as a coil a spring a plate spring etc may be employed as the pressing member 105 and several such bodies may be used jointly in a case where joining elements 4 fig6 are used for bonding patterns or leads 3 to electrodes 2 a three layer film made of gold nickel and chromium is used for the electrodes 2 formed on a surface of the piezoelectric element 1 however in a case where another joining layer is used therefor not only the three layers film but also various electrode materials such as aluminum gold silver copper etc can be selectively used fig3 is a plan view of the lead board 5 according to the present invention the lead board 5 is made of.