| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power transmission device capable of preventing occurrence of permanent distortion of a buffer member and obtaining sufficient damping effect for fluctuation of rotation by the buffer member. <P>SOLUTION: The buffer member 12 is formed by a spring member 12a and a rubber member 12b, compression deformation of the buffer member 12 is absorbed by elasticity of the spring member 12a, and damping force by elasticity of the rubber member 12b is given to compression deformation of the spring member 12a to prevent permanent distortion of the buffer member 12 by the spring member 12a, even if hardness of the rubber member 12b is reduced and increase damping effect by the rubber member 12b. Consequently, even when load is repeatedly applied by fluctuation of rotation, rupture strength of each connection part 11c of a transmission ring 11 is not reduced by fatigue by damping effect of the rubber member 12b, and each connection part 11c is always broken only when it reaches predetermined torque. <P>COPYRIGHT: (C)2007,JPO&INPIT |
