| 摘要 |
PURPOSE: Water pump structure of a noise reduction vehicle is provided to prevent wear of a bearing supporting a shaft and to reduce noise by dispersing tension generated by belt-driving a crankshaft and a pulley. CONSTITUTION: An impeller(21) is installed in a body(10) fixed in a cylinder block. A shaft(20) is extended longitudinally with being protruded out of the body and supported by a bearing. The shaft is bolt-combined with a pulley(22) connected by a crankshaft and a belt in the cylinder block, and supported by a coupling(23). The coupling having coupling holes(24) at four edges is formed of a cross-shaped member, and combined with the cylinder block through the coupling hole by an assembling unit such as a bolt. The tension of the belt is dispersed with the pulley being installed in the shaft and supported by a bearing despite being driven by the crankshaft.
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