| 摘要 |
PROBLEM TO BE SOLVED: To provide a power tool which conducts improved lubrication of angle drive gear teeth for automatic repetitive movement of grease present in an angle drive gear chamber. SOLUTION: The angle drive device 13 comprises a gear chamber 30 which houses lubricant grease, a pinion 16 connected to a motor 11 and a bevel gear 17 connected to an output shaft. A stationary wall element 24 arranged near teeth of the bevel gear 17 directly connects a major part of the lubricant grease in the gear chamber 30 to the bevel gear teeth, and forms a grease screen. A grease moving element 33 is guided along a circular path formed by a groove 32 on an end wall 31 of a housing 10 under the bevel gear 17. A coupling device 34 is attached to the bevel gear 17 and is arranged to be joined with the grease moving element 33. COPYRIGHT: (C)2004,JPO
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