| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dynamic damper that can improve assemblability of an inertial mass body in a storage chamber, prevent or suppress the generation abnormal noise caused by collision of components, and suppress a load from being generated due to uneven weight balance of each of the components. <P>SOLUTION: The inertial mass body 5 includes a groove-shaped annular groove 6 and protrusions 7, 8 in both ends of the groove-shaped annular groove. A rolling contact surface 4 is radially formed outside of a rotary member 2 in an inner wall surface of the storage chamber 3. A recessed notched groove 10 in a radial direction of the rotary member 2 and notched protrusions 11, 12 that protrude in both sides are provided in a position facing the inner rolling contact surface 4 in the radial direction of the rotary member 2 in the inner wall surface of the storage chamber 3. The rolling contact surface 4 and a bottom surface 9 are contacted, the inertial mass body 5 reciprocates while it rolls the rolling contact surface 4 according to torsional vibrations of the rotary member 2, and the protrusions 7, 8 and the notched protrusions 11, 12 are disposed to face each other. <P>COPYRIGHT: (C)2012,JPO&INPIT |
