Patent ID: 8286724

Claim:
An impact tool comprising: a motor, a tool body that houses the motor and has a tip end region to which a tool bit to be driven by the motor is coupled, a handle held by a user and disposed on the tool body at a side opposite to the tip end region to which the tool bit is coupled, a vibration-proofing cushioning material that is disposed between the tool body and the handle and connects the tool body and the handle such that the tool body and the handle can move with respect to each other in an axial direction of the tool bit, a motor-driving manual operating member that is disposed on the handle, biased from an on position to an off position, wherein current is passed to the motor in the on position and the current is interrupted in the off position and wherein the motor-driving manual operating member is normally placed in the off position and can be operated by user's finger between the off position and the on position, an operation mode switching member that is disposed on the tool body and can switch between first operation mode in which the tool bit is continuously driven and second operation mode in which the tool bit is arbitrarily driven, a movable member that is moved in the axial direction of the tool bit by the switching operation of the operation mode switching member, wherein, when the operation mode switching member is switched to the first operation mode, the movable member moves toward the handle and moves the manual operating member from the off position to the on position and locks it in the on position, while, when the operation mode switching member is switched to the second operation mode, the movable member moves away from the handle and releases said lock of the manual operating member so that the manual operating member can be returned to the off position and allowed to be operated by user's finger and a vibration-proofing elastic member that is disposed in a predetermined region in a vibration transmitting path including at least the movable member and the manual operating member, wherein the vibration-proofing elastic member prevents vibration caused in the tool body from being transmitted to the handle via the vibration transmitting path in the state in which the operation mode switching member is switched to the first operation mode and the manual operating member is locked in the on position by the movable member.