Patent ID: 9044848
Filing Date: 2015-06-02
Classification: B25D

Abstract:
1. An impact tool, which performs a predetermined operation on a workpiece by rectilinear movement of a tool bit in an axial direction of the tool bit, the impact tool comprising: a motor, a rotating shaft disposed parallel to the axial direction of the tool bit and configured to be rotationally driven by the motor about an axis, a swinging member extending in a first direction transverse to the axis of the rotating shaft, the swinging member being configured to swing in the axial direction of the tool bit due to rotation of the rotating shaft, a tool driving mechanism connected to an end region of the swinging member, the tool driving mechanism being caused to rectilinearly move in the axial direction of the tool bit by a swinging movement of the swinging member, thereby rectilinearly driving the tool bit, and a vibration reducing member drivably connected to a connecting part between the swinging member and the tool driving mechanism by means of a joint arm that swings on a pivot shaft in the axial direction of the tool bit, the vibration reducing member being configured to reduce vibration in the axial direction of the tool bit caused during operation of the tool bit, wherein: the vibration reducing member is disposed within a tool body of the impact tool on an opposite side of a rectilinear working axis of the tool bit relative to the rotating shaft, the rectilinear working axis is spaced a first distance from the rotating shaft in the first direction, and the vibration reducing member is spaced a second distance from the rotating shaft in the first direction, the second distance being greater than the first distance.