Vibratory linear actuator, fastening structure for fastening vibratory linear actuator to fastening portion counterpart, and cutter

A fastening structure for fastening a vibratory linear actuator to a fastening portion counterpart provided to a component, the vibratory linear actuator comprising:

• a movable element configured to reciprocate in a first direction;
• and
• a stator element configured to drive the movable element to reciprocate in the first direction,
• wherein
• the stator element comprises:
• a stator body, and
• a fastening portion provided to the stator body and configured to be fastened to the fastening portion counterpart,
• the fastening portion comprises:
• a pair of legs protruding downwards from one surface of the stator body and facing each other, in a side view in a state where the stator element is disposed in such a way that the one surface of the stator body faces downwards, and
• a pair of protrusions provided to the pair of legs, respectively, and protruding inwards in a direction in which the legs face each other, in the side view in the state where the stator element is disposed in the way that the one surface of the stator body faces downwards, and
• the fastening portion counterpart is held between the pair of legs in a state where the fastening portion counterpart is inhibited by the pair of protrusions from being loosened.