JPH0345092U

JPH0345092U -

Info

Publication number: JPH0345092U
Application number: JP10406289U
Authority: JP
Priority date: 1989-09-04
Filing date: 1989-09-04
Publication date: 1991-04-25

Description

[Brief explanation of drawings]

第１図は本考案の第一の実施例を示す圧電モー
タの正面断面図、第２図ａ〜ｃはそれぞれ第１図
に示すステータ部の平面図、正面図および裏面図
、第３図ａ，ｂはそれぞれ本考案の第二の実施例
を説明するための圧電モータにおけるステータの
平面図および正面図、第４図は本考案の第三の実
施例を示す圧電モータの正面断面図、第５図ａ〜
ｃはそれぞれ第４図に示すステータ部の平面図、
正面図および裏面図、第６図ａ，ｂはそれぞれ本
考案の第四の実施例を説明するための圧電モータ
におけるステータ部の平面図および正面図、第７
図は本考案の第五の実施例を示す圧電モータの正
面断面図、第８図ａ〜ｃはそれぞれ第７図に示す
ステータ部の平面図、正面図および裏面図、第９
図は第７図のステータにおける進行波の励振方法
を説明するための概略図、第１０図ａ〜ｃはそれ
ぞれ本考案の第六の実施例を説明するための圧電
モータにおけるステータの平面図、正面図および
裏面図、第１１図ａ〜ｃはそれぞれ本考案の第七
の実施例を説明するための圧電モータにおけるス
テータの平面図、正面図および裏面図、第１２図
ａ〜ｃはそれぞれ本考案の第八の実施例を説明す
るための圧電モータにおけるステータの平面図、
正面図および裏面図である。１……ステータ、２，２ａ〜２ｈ，２Ａ，２Ｂ
……積層圧電素子、３……ロータ、４……圧縮ば
ね、５……シヤフト、６……ハウジング、７，７
Ａ，７Ｂ……突出部、８……変位拡大機構。 Figure 1 is a front sectional view of a piezoelectric motor showing a first embodiment of the present invention, Figures 2 a to c are a plan view, front view and back view of the stator section shown in Figure 1, and Figure 3 a , b are a plan view and a front view of a stator in a piezoelectric motor for explaining a second embodiment of the present invention, respectively, and FIG. 4 is a front cross-sectional view of a piezoelectric motor showing a third embodiment of the present invention, and Figure 5 a~
c is a plan view of the stator section shown in FIG. 4, respectively;
A front view and a back view, and FIGS. 6a and 6b are respectively a plan view and a front view of a stator section of a piezoelectric motor for explaining a fourth embodiment of the present invention, and FIGS.
The figure is a front sectional view of a piezoelectric motor showing a fifth embodiment of the present invention, and FIGS.
The figure is a schematic diagram for explaining the method of exciting the traveling wave in the stator of FIG. 7, and FIGS. 10 a to 10 c are plan views of the stator of the piezoelectric motor, respectively, for explaining the sixth embodiment of the present invention. A front view and a back view, and FIGS. 11a to 11c are respectively a plan view, a front view and a back view of a stator in a piezoelectric motor for explaining the seventh embodiment of the present invention, and FIGS. A plan view of a stator in a piezoelectric motor for explaining an eighth embodiment of the invention,
They are a front view and a back view. 1...Stator, 2, 2a to 2h, 2A, 2B
...Laminated piezoelectric element, 3...Rotor, 4...Compression spring, 5...Shaft, 6...Housing, 7,7
A, 7B... Protrusion, 8... Displacement magnification mechanism.

Claims

[Claims for Utility Model Registration] (1) In a piezoelectric motor that generates rotational motion of a rotor by applying an electric signal to a piezoelectric element, a plurality of protrusions formed on the lower surface of a disc-shaped or circular metal stator and a plurality of laminated piezoelectric elements joined in a circular ring shape so as to be inwardly engaged in the same direction of the protrusion. (2) The piezoelectric motor according to claim 1, characterized in that the plurality of laminated piezoelectric elements are divided into two groups, and the piezoelectric motor is driven by shifting the mutual positional relationship by a specific phase difference of the excited traveling wave. .