| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact and lightweight rotary driving device obtaining large driving force. <P>SOLUTION: The rotary driving device includes: a shaft member 12; a housing 30; a base 11 to which one of the shaft member 12 and the housing 30 is fixed and on which the other is mounted movably in the axial direction of the shaft member 12 while being regulated in rotation; a rotor 20 supported to be rotatable eccentrically around the shaft member 12 and floatable on the housing 30; a projecting ridge portion 22 formed in a through-hole, which is provided in the rotor 20 to have a larger diameter than the outer diameter of the shaft member 12, to be engageable with and disengageable from a screw portion 12d at a part of the circumference; blade parts 24 provided on the rotor 20 and giving turning force to the rotor 20 through passage of wind; a weight part 23 provided on the rotor 20 and rotating eccentrically the rotor 20 by giving centrifugal force to the rotor 20 when the rotor 20 rotates to engage the projecting ridge portion 22 with the screw portion 12d; and a wind generator 41 provided on the housing 30 and sending wind to the blade parts 24. <P>COPYRIGHT: (C)2011,JPO&INPIT |
