Dust collecting attachment and electric power tool

A dust collecting attachment for an electric power tool, the dust collecting attachment comprising:

• dust collecting fans;
• a suctioning portion that generates a suctioning force by rotation of the dust collecting fans;
• and
• a dust collecting portion that captures dust suctioned from the suctioning portion, wherein:
• when the dust collecting attachment is mounted to the electric power tool including a motor, a fan shaft of the dust collecting fans is connected to a rotation shaft that is disposed in the electric power tool and rotates in accordance with driving of the motor to allow the dust collecting fans to rotate integrally with the rotation shaft,
• the dust collecting fans are disposed in a plurality of stages in an axial direction of the fan shaft,
• the fan shaft includes an outer sleeve to which each of the dust collection fans is fixed, an inner shaft provided within the outer sleeve, and a connecting shaft connected to the rotation shaft and separated from the inner shaft in the axial direction,
• the inner shaft and the connecting shaft are rotatable relative to each other by a predetermined angle,
• the inner shaft is connected to the outer sleeve so as to be rotatable together, and
• the connecting shaft is movable in the axial direction and is biased toward a connection side with the rotation shaft by an elastic member interposed between the connecting shaft and the inner shaft within the outer sleeve, and a protruding position of the connecting shaft toward the connection side is restricted by the outer sleeve.