JPH031691U

JPH031691U -

Info

Publication number: JPH031691U
Application number: JP5749589U
Authority: JP
Priority date: 1989-05-18
Filing date: 1989-05-18
Publication date: 1991-01-09
Anticipated expiration: 2004-05-18
Also published as: JPH0742237Y2

Description

[Brief explanation of the drawing]

第１図は本考案のエンコーダ付き超音波モータ
の半断面図、第２図は、バネ材の平面図、第３図
は従来の超音波モータの断面図である。１；ステータ、２；ロータ、３；皿バネ、４；
出力軸、７；ケーシング、１０；エンコーダ、１
１；ケーシング。 FIG. 1 is a half sectional view of an ultrasonic motor with an encoder according to the present invention, FIG. 2 is a plan view of a spring member, and FIG. 3 is a sectional view of a conventional ultrasonic motor. 1; Stator, 2; Rotor, 3; Belleville spring, 4;
Output shaft, 7; Casing, 10; Encoder, 1
1; Casing.

Claims

[Claims for Utility Model Registration] (1) A piezoelectric element is provided on one surface of the stator to generate a traveling wave in the stator, and a rotor is pressed against the other surface of the stator by a spring material. In an ultrasonic motor, an encoder is attached to one end of the output shaft in which the output shaft, which passes through the center of the rotor and stator, rotates together with the rotor via a spring material. , an ultrasonic motor with an encoder in which the casing of the encoder is airtightly connected to the casing of the ultrasonic motor so that the connection can be sealed. (2) Form the spring material attachment part of the output shaft into a shape that has a locking part, form the center hole of the spring material in a shape corresponding to the locking part of the output shaft, and make the center hole of the spring material have a shape that has a locking part. The ultrasonic motor with an encoder according to claim 1, wherein the encoder is engaged with the locking portion of the shaft.