| 摘要 |
A driving motor includes a member having a contact surface, and a vibrator including a contact part that is brought into contact with the contact surface and a piezoelectric element that is fixed on the vibrator. In addition, a retention part retains the vibrator, and a pressurization unit has an elastic member to apply an impressing force on the contact part against the member including the contact surface, a pressurization member that transfers the impressing force from the elastic member, and a fixing member that restricts movement of the pressurization member. The retention part includes an abutting part with a line contact part that receives the impressing force from the elastic member and comes into line contact with the pressurization member, with the abutting part having a shape able to come into line contact with a surface perpendicular to the direction of the impressing force. |
