| 摘要 |
PROBLEM TO BE SOLVED: To suppress the temperature rise of a bearing on an exhaust opening side and that of a frame of a motor for a vehicle. SOLUTION: A ventilation passage is formed by providing an auxiliary airing hole on the frame near the exhaust opening, taking air in from this auxiliary airing hole, and providing a cover for the auxiliary airing hole for letting the air out from the exhaust opening.
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