| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil rotation impact force generator having an improved cooling function.SOLUTION: An oil rotation impact force generator 10 includes a cylindrical rotation drive member 12 with an oil sealed therein, a to-be-driven rotation member 14 having an output shaft 14-1 extending in such a way as to penetrate forward a front end wall member 12B of the cylindrical rotation drive member and at least one division member 16 supported by the to-be-driven rotation member in such a way as to be displaceable in the radial direction. The to-be-driven rotation member has a division member housing groove 14-4, a first cooling passage 14-14 communicating with the division member housing groove, extending in a direction of the axis of the longitudinal direction within the to-be-driven rotation member and further extending to the front end wall member of the cylindrical rotation drive member, a cooling chamber 12B-6 formed in the front end wall member and communicating with the first cooling passage and a second cooling passage extending from the cooling chamber and communicating with an oil storage chamber. A displacement of the division member 16 in the radial direction generates a flow of an oil to the cooling chamber through the first and second cooling passages. |
