| 摘要 |
An electric vibration tool (100) for driving a blade (200), the electric vibration tool having a spindle (120), a crank shaft (123) that is detachably mounted on the spindle (120), and a crank-shaft-holding mechanism (130) for holding the crank shaft (123) and thereby mounting the crank shaft (123) on the spindle (120). The crank shaft (123) has a shaft (124), a clamp head (125), and an engaging flange (126). The clamp head (125) and the engaging flange (126) are formed so as to protrude in the radial direction from the shaft (124). The crank-shaft-holding mechanism (130) has a holding member for holding the engaging flange (126), the holding member being positioned between the shaft (124) and the outer end of the engaging flange (126). The holding member holds the crank shaft (123) in cooperation with the engaging flange (126).
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