JPH0275994U

JPH0275994U -

Info

Publication number: JPH0275994U
Application number: JP15339388U
Authority: JP
Priority date: 1988-11-24
Filing date: 1988-11-24
Publication date: 1990-06-11

Description

[Brief explanation of drawings]

添付図面は本考案の実施例を示し、第１図は縦
断側面図、第２図は超音波捩れ振動子１と圧電ア
クチユエータ８の信号波形図、第３〜５図は本考
案の実施例を示す要部の縦断側面図、第６図は塗
膜ｘを示す接触面の縦断側面図である。１；超音波捩れ振動子、２ａ，２ｂ；環状圧電
素子、３，４；金属ブロツク、８；圧電アクチユ
エータ、９；圧電素子、９ａ；銀電極、１１；ロ
ータ、１５；発条、２０；電極保護板、２１；耐
摩耗板、ｘ；塗膜、ｙ；平滑仕上面。 The attached drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional side view, Fig. 2 is a signal waveform diagram of the ultrasonic torsional transducer 1 and piezoelectric actuator 8, and Figs. 3 to 5 show an embodiment of the invention. FIG. 6 is a vertical side view of the contact surface showing the coating film x. 1; Ultrasonic torsional vibrator, 2a, 2b; Annular piezoelectric element, 3, 4; Metal block, 8; Piezoelectric actuator, 9; Piezoelectric element, 9a; Silver electrode, 11; Rotor, 15; Spring, 20; Electrode protection Plate, 21; wear-resistant plate, x; coating film, y; smooth finished surface.

Claims

[Claims for Utility Model Registration] A laminated piezoelectric actuator is disposed on the end face of an ultrasonic torsional vibrator, and a rotor is brought into contact with the laminated piezoelectric actuator, thereby combining the ultrasonic torsional vibrator and the laminated piezoelectric actuator. In an ultrasonic motor driven by an alternating current power source having a predetermined phase difference, a coating film is formed on either or both of the contact surface on the laminated piezoelectric actuator side and the contact surface on the rotor side to give a smooth finish. An ultrasonic motor characterized by having a surface.