JPH01123492U

JPH01123492U -

Info

Publication number: JPH01123492U
Application number: JP1939988U
Authority: JP
Priority date: 1988-02-17
Filing date: 1988-02-17
Publication date: 1989-08-22

Description

[Brief explanation of the drawing]

第１図はこの考案に係る圧電式アクチユエータ
の一実施例を示す断面図、第２図は同上の圧電式
アクチユエータに用いられる弾性体の平面図、第
３図は同上の圧電式アクチユエータの斜視図、第
４図は同上の圧電式アクチユエータを自動車用空
調装置のドア開閉に用いた実施例を示す部分断面
図、第５図は従来の圧電式アクチユエータの一部
切欠斜視図である。１……ステータ、２，２′……ロータ、３……
力伝達体、４……第１の摩擦体、５……第２の摩
擦体、６……圧電セラミツク、７……弾性体。 Fig. 1 is a sectional view showing an embodiment of the piezoelectric actuator according to the invention, Fig. 2 is a plan view of an elastic body used in the piezoelectric actuator mentioned above, and Fig. 3 is a perspective view of the piezoelectric actuator mentioned above. , FIG. 4 is a partial sectional view showing an embodiment in which the piezoelectric actuator described above is used for opening and closing a door of an automobile air conditioner, and FIG. 5 is a partially cutaway perspective view of a conventional piezoelectric actuator. 1... Stator, 2, 2'... Rotor, 3...
Force transmitting body, 4...first friction body, 5...second friction body, 6...piezoelectric ceramic, 7...elastic body.

Claims

[Claims for Utility Model Registration] A piezoelectric actuator comprising a stator that converts ultrasonic vibrations generated in a piezoelectric body into traveling waves, and a rotor rotated by the stator, wherein: between the stator and the rotor: A force transmitting body is provided which is rotated by the stator while the rotor is placed thereon, and a force transmitting body is provided between the rotor and the force transmitting body when a torque of a predetermined value or more is applied to the rotor. A first sliding means for generating a slip between the stator and the force transmitting body, and a second sliding means for generating a smaller slip than the first sliding means between the stator and the force transmitting body. A piezoelectric actuator characterized by: