Patent ID: 7523790

Claim:
A reciprocating power tool comprising: an actuating mechanism that drives a tool bit that performs a predetermined operation to the work by reciprocating in an axial direction; a tool body that houses the actuating mechanism; a grip that is rotatably mounted on a rear end of the tool body on a side opposite to the tool bit, the grip being connected to the tool body by two connecting units disposed at an upper region and a lower region of the tool body, the lower connecting unit comprising a pivot about which the grip rotates with respect to the tool body; an elastic element resiliently disposed between the tool body and the grip as a part of the upper connecting unit, the elastic element absorbing vibration transmitted from the tool body to the grip during operation of the reciprocating power tool by receiving a deforming force in a longitudinal direction of the tool bit; and a vibration damping part disposed between the tool body and the grip with the elastic element as another part of the upper connecting unit to damp and attenuate the vibration, wherein the vibration damping part comprises a body-side sliding part disposed on the tool body and a grip-side sliding part disposed on the grip and slidably connected to the body-side sliding part, the vibration damping part being configured to attenuate the vibration by friction produced when the body-side sliding part and the grip-side sliding part move in contact with each other upon transmission of the vibration, one of the body-side sliding part and the grip-side sliding part includes a rod-like element and the other of the body-side sliding part and the grip-side sliding part includes a cylindrical element into which the rod-like element is inserted so that the vibration is damped and attenuated by friction produced on the sliding contact surface between the rod-like element and the cylindrical element, and a projection is formed on a side region of the rod-like element by which the contact between the rod-like element and the cylindrical element can be maintained in a constant state.