| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary drive device that produces large torque despite a compact and lightweight design and excels in durability. <P>SOLUTION: The rotary drive device includes: a first member 4 having a pair of first counter surfaces 18 in part of surfaces and rotatable on an axis of rotation; a second member 6 having a pair of second counter surfaces 28 opposed to the pair of first counter surfaces at intervals; a plurality of elastic pressure contact members 8 raised on either of the pair of first counter surfaces and the pair of second counter surfaces and inclined in the same direction with respect to the direction of rotation of the first member into elastic pressure contact with the other of the pair of first counter surfaces and the pair of second counter surfaces; a base 10 journaling the first member for rotation on the axis of rotation and supporting the second member against rotation; and excitation means 12 disposed between the second member and the base to excite the pair of second counter surfaces toward and away from each other, so that the interval distance between the first counter surfaces and the second counter surfaces opposite to each other is repeatedly slightly changed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
