Electric power tool

An electric power tool comprising:

• a housing;
• a cylindrical tool holder pivotally supported to be rotatable in the housing, the tool holder extending in a front-rear direction and having a front end to which a bit is attachable;
• a piston cylinder housed to be movable back and forth in the tool holder;
• an impactor configured to strike the bit and disposed inside the piston cylinder;
• a motor disposed in the housing;
• at least one intermediate shaft pivotally supported to be parallel to an axis line of the tool holder in the housing, a rotation of the motor being transmitted to the intermediate shaft from a rotation shaft of the motor;
• a sleeve-shaped impact transmission member including a rod coupled to a rear end of the piston cylinder via a swing member that swings back and forth in accordance with a rotation of the intermediate shaft, the impact transmission member being configured to rotate to convert the rotation of the intermediate shaft into a reciprocating motion in the front-rear direction of the rod and transmit the reciprocating motion to the piston cylinder, the impact transmission member rotatably and externally mounted to the intermediate shaft separately from the intermediate shaft;
• and
• a clutch member disposed at the intermediate shaft, the clutch member being configured to be integrally rotatable with the intermediate shaft and slidable in the front-rear direction, wherein
• by performing a switch operation of a slide position of the clutch member from an outside of the housing, a hammer mode in which the clutch member is engaged with the impact transmission member to reciprocate the piston cylinder back and forth and another operation mode in which the clutch member separates from the impact transmission member are selectable, and
• the impact transmission member is rotatably cantilevered not to be in contact with the intermediate shaft by the housing via a bearing.