JPH0196787U

JPH0196787U -

Info

Publication number: JPH0196787U
Application number: JP19134587U
Authority: JP
Priority date: 1987-12-18
Filing date: 1987-12-18
Publication date: 1989-06-27

Description

[Brief explanation of the drawing]

第１図は本考案に係る超音波モータの一実施例
を示す半断面図、第２図は第１図のモータ部分を
示す分解斜視図、第３図および第４図は第１図の
圧電振動子の表裏面を示す斜視図、第５図は第１
図中の連結部材を示す斜視図、第６図および第７
図は本考案の他の実施例を示す要部断面図および
要部上面図、第８図は本考案の更に他の実施例を
示す要部断面図、第９図は従来の超音波モータを
示す概略断面図、第１０図は超音波モータの回転
原理を説明する図である。１，２３……圧電振動子、３，１３……導電性
弾性板、５，４９……ステータ、７，５３ａ，５
３ｂ……回転軸、９，５１……ロータ板、１１，
２１……小振動片、１７……ボールベアリング、
１９……スリツト、２５……圧電板、２７……分
割電極（第１の分割電極）、３１……分割電極（
第２の分割電極）、３５，３７……共通電極、４
１……基台、５５……凹溝、５７……ライジング
、６１……ナツト、６３……連結部材（弾性連結
管）、６５……フアン、７１，７３，７５，７７
……連結部材（第１〜第４のギヤー）。 FIG. 1 is a half-sectional view showing an embodiment of the ultrasonic motor according to the present invention, FIG. 2 is an exploded perspective view showing the motor part of FIG. 1, and FIGS. A perspective view showing the front and back sides of the vibrator, Figure 5 is the first
A perspective view showing the connecting member in the figure, FIGS. 6 and 7.
The figures are a sectional view and a top view of main parts showing another embodiment of the present invention, Fig. 8 is a sectional view of main parts showing still another embodiment of the invention, and Fig. 9 shows a conventional ultrasonic motor. The schematic sectional view shown in FIG. 10 is a diagram illustrating the principle of rotation of the ultrasonic motor. 1, 23... Piezoelectric vibrator, 3, 13... Conductive elastic plate, 5, 49... Stator, 7, 53a, 5
3b... Rotating shaft, 9, 51... Rotor plate, 11,
21...Small vibrating piece, 17...Ball bearing,
19... Slit, 25... Piezoelectric plate, 27... Divided electrode (first divided electrode), 31... Divided electrode (
second divided electrode), 35, 37...common electrode, 4
1...Base, 55...Concave groove, 57...Rising, 61...Nut, 63...Connection member (elastic connection pipe), 65...Fan, 71, 73, 75, 77
...Connecting member (first to fourth gear).

Claims

[Claims for Utility Model Registration] An annular elastic body forming a stator of a motor, a ring-shaped piezoelectric plate, on one side of which a plurality of divided electrodes are formed, and on the opposite surface thereof, a common electrode facing the divided electrodes is formed. and a piezoelectric vibrator fixed to one side of the elastic body by polarizing the piezoelectric plate in the opposite direction for each adjacent divided electrode; A rotor plate rotatably supported by the stator in a state of being in pressure contact with the elastic body, and an ultrasonic motor comprising: a fan for blowing air is generated on the rotor plate when the rotor plate rotates. An ultrasonic motor, characterized in that the ultrasonic motor is connected to the rotor plate via a connecting member that hardly transmits vibrations.