JPH03113995U

JPH03113995U -

Info

Publication number: JPH03113995U
Application number: JP2327590U
Authority: JP
Priority date: 1990-03-08
Filing date: 1990-03-08
Publication date: 1991-11-21

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す斜視図、第２図
は本考案の他の実施例を示す平面図、第３図は本
考案の他の実施例を示す部分斜視図である。２２……ステータ、１０，２０，３０……金属
板、１１，２１，３１……舌片。 FIG. 1 is a perspective view of an embodiment of the invention, FIG. 2 is a plan view of another embodiment of the invention, and FIG. 3 is a partial perspective view of another embodiment of the invention. 22... Stator, 10, 20, 30... Metal plate, 11, 21, 31... Tongue piece.

Claims

[Claims for Utility Model Registration] (1) In the rotor of an ultrasonic motor that rotates due to the displacement generated on the outer peripheral surface of a piezoelectric ceramic having a circular outer shape, a plurality of metal rings are connected to both ends of an elongated metal plate. A U-shaped cut is formed, the tongue piece formed by the cut is bent inside the ring, and the middle part of the tongue piece is further bent outward to form a dogleg shape. A rotor for an ultrasonic motor, characterized in that a portion of the rotor is in contact with a piezoelectric ceramic. (2) In the rotor of an ultrasonic motor that rotates due to the displacement generated on the outer peripheral surface of a piezoelectric ceramic having a circular outer shape, a plurality of U-shaped notches are formed in a metal ring to which both ends of an elongated metal plate are connected. A rotor for an ultrasonic motor, characterized in that tongue pieces formed by cuts are molded so as to protrude in an arc shape inside a ring, and the arc-shaped protrusions come into contact with a piezoelectric ceramic. (3) The rotor of an ultrasonic motor according to claim 1 or 2, wherein the tongue piece is supported at one end in the length direction of the metal plate. (4) The rotor for an ultrasonic motor according to claim 1 or 2, wherein the tongue piece is supported at one end in the width direction of the metal plate. (5) The U-shaped cut is formed in opposite directions, and the tongue pieces are formed in opposite directions, each of which is molded so as to protrude inside the ring. Ultrasonic motor rotor.