| 摘要 |
PROBLEM TO BE SOLVED: To provide a water pump capable of restraining film vibration of a pulley caused by vibration generated by a rotational variation and a bearing. SOLUTION: The pulley 20 is rotatably supported by the bearing 50 in a cylindrical support part projected in front of a pump body 10. A seal member 40 is interposed between a pump room side end part inner peripheral surface of the cylindrical support part and a rear end part outer peripheral surface of a shaft part 23 of the pulley, and is fixed to the pulley 20 so as to cover a bottomed cylindrical cover 60 from the front side. The cover is formed of a rubber material. A cylindrical part 60a arranged in the cover is fitted to a bearing holding part 22 of the pulley. COPYRIGHT: (C)2006,JPO&NCIPI
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