Abstract: An impact rotary tool includes: a driver; a spindle rotated by the driver; a primary hammer rotatable about an axis of rotation of the spindle and movable in a direction of the axis of rotation; a secondary hammer accommodating the primary hammer and rotatable integrally with the primary hammer; and an anvil applied with rotary stroke force by the primary hammer. An engaging pin is engaged with the primary hammer and the secondary hammer, integrally rotates the primary hammer and the secondary hammer, and allows the primary hammer to move in the direction of the axis of rotation. An elastic member is disposed in an annular groove formed in a circumferential direction on the inner peripheral surface of the secondary hammer and limits movement of the engaging pin.

Abstract: An impact rotation tool includes a motor, an impact mechanism, and a housing, which covers the motor and the impact mechanism. The impact mechanism includes an output shaft, which is rotatable by the motor, and an anvil, which is rotatable integrally with the output shaft. The impact mechanism applies a striking impact to the anvil when the motor outputs rotation. The impact rotation tool further includes a motor seat and a vibration reducer. The motor seat is fastened to the motor to hold the motor in the housing. The vibration reducer is located in the housing to reduce striking vibration transmitted to the motor.

Abstract: An impact rotary tool includes: a driver; a spindle rotated by the driver; a primary hammer rotatable about an axis of rotation of the spindle and movable in a direction of the axis of rotation; a secondary hammer accommodating the primary hammer and rotatable integrally with the primary hammer; and an anvil applied with rotary stroke force by the primary hammer. An engaging pin is engaged with the primary hammer and the secondary hammer, integrally rotates the primary hammer and the secondary hammer, and allows the primary hammer to move in the direction of the axis of rotation. An elastic member is disposed in an annular groove formed in a circumferential direction on the inner peripheral surface of the secondary hammer and limits movement of the engaging pin.

Abstract: A rotary impact tool includes an anvil that receives rotational impact force from a hammer of an impact mechanism. A driver cover covers the impact mechanism. A bearing is press fitted into and fixed to the driver cover to hold the anvil. A bearing separation restricting component restricts separation of the bearing from the driver cover. The bearing separation restricting component is hidden inside the driver cover and is invisible from an outer surface of the driver cover.

Abstract: An impact rotation tool includes a motor, an impact mechanism, and a housing, which covers the motor and the impact mechanism. The impact mechanism includes an output shaft, which is rotatable by the motor, and an anvil, which is rotatable integrally with the output shaft. The impact mechanism applies a striking impact to the anvil when the motor outputs rotation. The impact rotation tool further includes a motor seat and a vibration reducer. The motor seat is fastened to the motor to hold the motor in the housing. The vibration reducer is located in the housing to reduce striking vibration transmitted to the motor.

Abstract: An electric power tool includes a tool body and a battery pack removably mounted to the tool body. The battery pack is used as a power source of the tool body. The electric power tool further includes a lock unit for keeping the battery pack mounted to the tool body and an interrupter switch for interrupting the operation of the tool body when the lock unit does not keep the battery pack mounted to the tool body. Accordingly, the electric power tool is not operable when the battery pack is not completely mounted to the tool body.

Abstract: An electric power tool includes a tool body and a battery pack removably mounted to the tool body. The battery pack is used as a power source of the tool body. The electric power tool further includes a lock unit for keeping the battery pack mounted to the tool body and an interrupter switch for interrupting the operation of the tool body when the lock unit does not keep the battery pack mounted to the tool body. Accordingly, the electric power tool is not operable when the battery pack is not completely mounted to the tool body.