| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission device, insulating abnormal noise occurring in a power transmission part between a hub and a pulley, and having a sound insulation cover that is easy to be attached/detached, without the risk of slipping off. SOLUTION: The power transmission device comprises a pulley 3 rotary-driven by a driving source, a hub 4 connected with a rotational shaft 81 of the compressor 8, and an elastic member 1 interposed in between them to transmit torque. The pulley is connected with the hub in a circumferential direction via the elastic member and a gap g, and a connecting part thereof is covered with each of cover bodies 5, 5A-5D. Each of the cover bodies 5, 5A is constituted of a cover member 51 made of rubber, and an annular ring 52, bonded to an outer peripheral part of the cover member and having a cutout 52a formed in a part thereof. The ring is assembled in an annular groove 32 on a front side of the pulley. COPYRIGHT: (C)2007,JPO&INPIT
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