Patent ID: 9168650
Filing Date: 2015-10-27
Classification: B24B,B25F

Abstract:
1. An oscillating rotary electric power tool comprising: a housing provided to extend in a longitudinal direction; a motor accommodated in the housing; a spindle projected downward from a front end portion of the housing; a distal end tool to be attached to the spindle; a coupling member accommodated in the housing and coupled to an output shaft of the motor on an identical axis to that of the output shaft to be rotatable integrally with the output shaft; a crankshaft accommodated in the housing, arranged to be rotatable on the identical axis, and fitted with the coupling member in a depression and projection fitting structure; and a link member accommodated in the housing, to which the spindle is fixed and power is transmitted from the crankshaft to rotate clockwise and counterclockwise in an oscillating manner, wherein the link member is driven by the motor through the coupling member and the crankshaft to rotate the spindle clockwise and counterclockwise in the oscillating manner, and an elastic body is interposed between the coupling member and the crankshaft in a direction of the identical axis to fit the coupling member and the crankshaft together in the depression and projection fitting structure.