JPH0182692U

JPH0182692U -

Info

Publication number: JPH0182692U
Application number: JP1987178247U
Authority: JP
Priority date: 1987-11-25
Filing date: 1987-11-25
Publication date: 1989-06-01

Description

[Brief explanation of the drawing]

第１図は本実施例の超音波モータの断面側面図
、第２図、第３図は第１図の超音波モータの変形
例を示す断面側面図、第４図〜第６図は考案の技
術的背景及びその問題点を説明するための図であ
る。図中、１，１０，１０′，２３…超音波モータ
、２，１１，１１′…回転軸、３，１２，１２′
，２５…圧電セラミツクス、４，１３，１３′，
２２，２４…弾性体、４ａ，１３ｂ，１３ｂ′…
回転案内部、５，１４，１４′…ロータ、５ｂ，
１４ａ，１４ａ′，…フランジ部、６，１５，１
５′…ライナー部材、１３ａ，１４ｂ′，２４ｂ
，２６ｂ…内周面、１３ｂ′，１４ｂ，２４ａ，
２６ａ…外周面、２１…移動体、２６…圧接面で
ある。 FIG. 1 is a sectional side view of the ultrasonic motor of this embodiment, FIGS. 2 and 3 are sectional side views showing modifications of the ultrasonic motor of FIG. 1, and FIGS. It is a diagram for explaining the technical background and its problems. In the figure, 1, 10, 10', 23... Ultrasonic motor, 2, 11, 11'... Rotating shaft, 3, 12, 12'
, 25...piezoelectric ceramics, 4, 13, 13',
22, 24...elastic body, 4a, 13b, 13b'...
Rotation guide part, 5, 14, 14'...rotor, 5b,
14a, 14a',...flange part, 6, 15, 1
5'...Liner member, 13a, 14b', 24b
, 26b...inner peripheral surface, 13b', 14b, 24a,
26a...outer peripheral surface, 21...movable body, 26...pressure contact surface.

Claims

[Claims for Utility Model Registration] (1) An ultrasonic motor having at least an elastic body that generates a traveling wave by flexural vibration, and a moving body that is in pressure contact with the elastic body and rotates based on the traveling wave. An ultrasonic motor, characterized in that a part of the circumferential surface of the elastic body, excluding a surface in pressure contact with the movable body, is provided as a rotation guide portion of the movable body. (2) Utility model registration claim 1, characterized in that the outer peripheral surface of the elastic body is the rotation guide part.
Ultrasonic motor as described in section. (3) Utility model registration claim 1, characterized in that the inner circumferential surface of the elastic body is the rotation guide part.
The ultrasonic motor according to item 1 or 2. (4) The ultrasonic motor according to claim 1, wherein both the inner and outer circumferential surfaces of the elastic body serve as the rotation guide portion. (5) A utility model according to any one of claims 2 to 4, characterized in that a tapered surface is provided on at least the circumferential surface of the elastic body, and the tapered surface serves as the rotation guide section. ultrasonic motor. (6) The ultrasonic motor according to claim 1, wherein the rotation guide part has a predetermined clearance in the radial direction with respect to the circumferential surface of the movable body guided by the rotation guide part. .