| 摘要 |
PROBLEM TO BE SOLVED: To provide a hammering tool capable of effectively absorbing vibration due to a drive of a hammering element. SOLUTION: A counter weight unit 53 is disposed in a sub cylinder 32B. The counter weight 50 is made of a magnetic body, and slidably disposed in the sub housing 32B in the longitudinal direction. A second spring 51 is made of a nonmagnetic body and interposed between the counter weight 50 and a damping housing 32 in the front side and a third spring 52 is made of nonmagnetic body, and interposed between the counter weight 50 and the damping housing 32 in the rear side of the counter weight 50. The magnetic generation body 54 is coaxially fixed at the position opposed to the counter weight 50 of a crankshaft 34, and rotated together with the rotation of the crankshaft 34. The magnetic generation body 54 is equipped with a permanent magnet and the nonmagnetic body which are not shown in a figure. COPYRIGHT: (C)2007,JPO&INPIT
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