| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission device having improved reliability on power shut-off property and durability by stably and accurately controlling releasing torque on a connecting member while preventing cost and size increases of a product and the worsening of assembling efficiency. SOLUTION: The power transmission device comprises a driving side rotating member and a driven side rotating member, the connecting member for connecting both rotating members to each other, and a fixing member for fixing the rotating members to the connecting member. It transmits power from the driving side rotating member via the connecting member to the driven side rotating member, and releases the fixing member from the connecting member to cut off the power transmission when transmitted power exceeds a set value. The fixing member consists of a columnar fixing member separate from the rotating members and the connecting member. The fixing member is caulked to fix the rotating members to the connecting member. A fixing mechanism with caulking has an axial force generating mechanism for generating resilient reaction in the axial direction after caulking. COPYRIGHT: (C)2008,JPO&INPIT
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