| 摘要 |
PCT No. PCT/JP94/01576 Sec. 371 Date Apr. 8, 1996 Sec. 102(e) Date Apr. 8, 1996 PCT Filed Sep. 26, 1994 PCT Pub. No. WO95/10696 PCT Pub. Date Apr. 20, 1995The present invention relates to a water pump for an internal combustion engine, capable of effectively preventing the entry of dust into a bearing for an impeller shaft, and of providing a simply constructed and small-sized dustproof function. To this end, a fan (32) is mounted on a portion of an impeller shaft (18) which is positioned within a cup-shaped hood (30), and the inflow of dust into the bearings (22F, 22R) is prevented by the fan (32). The hood (30) is provided with blowout holes (44) in the portions thereof which are opposed to the outer circumference of the fan (32).
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