| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power transmission device capable of miniaturizing a drive shaft without increasing the number of components, and capable of reducing costs. <P>SOLUTION: The power transmission device is provided with a hub member 3 fixed to a driving side rotation member, and a spacer member 2 pressed to fit in a top of the drive shaft 1 being a driven side rotation member. The hub member and the drive shaft are connected via the spacer member to form a power transmission path P, and the spacer member has a torque limit function of cutting off transmission of excessive torque by breaking the power transmission path when there is an excessive load. A constricted breaking part 23 is provided in the spacer member to carry out the torque limit function. <P>COPYRIGHT: (C)2008,JPO&INPIT |
