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Ultrasonic motor, operating device, optical mechanism and electrical apparatus

A technology of ultrasonic motors and piezoelectric elements, which is applied in the fields of ultrasonic motors, operating devices, optical mechanisms and electrical equipment, and can solve problems such as driver IC damage

Active Publication Date: 2004-09-22
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in conventional ultrasonic motors, research on the relationship between the size of the vibrating element and the reliability of driving or the breakage of the driver IC due to dropping has not been well conducted

Method used

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  • Ultrasonic motor, operating device, optical mechanism and electrical apparatus
  • Ultrasonic motor, operating device, optical mechanism and electrical apparatus
  • Ultrasonic motor, operating device, optical mechanism and electrical apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0093] figure 1 is a perspective view showing the electric device according to the first embodiment of the present invention. figure 2 is shown figure 1 Front view of the electrical equipment shown in . image 3 is shown figure 1 Side view of the electrical equipment shown in .

[0094] The electric device 1 is an electro-optical instrument (optical mechanism) having an imaging section 2 and an optical system 3 . The electric device 1 is constituted by a base 4 , a diaphragm portion 5 , and a vibrating element 6 . The imaging section 2 is firmly mounted on the surface of the base 4 in such a manner that the imaging section 2 faces upward. The optical system 3 is arranged above the imaging section 2 so as to face the imaging section 2 at a predetermined distance from the imaging section 2 , and is firmly supported on a wall surface (not shown) extending from the base 4 . The base 4 has a substantially plate-like structure, and is a base for mounting the imaging section 2...

no. 2 example

[0200] A second embodiment of the present invention will be described below.

[0201] Figure 19 is a perspective view of the vibrating element in the second embodiment of the electric device according to the present invention. Figure 20 is a block diagram showing the circuit system of the energization circuit in the second embodiment according to the present invention.

[0202] Hereinafter, the electric device 1 in the second embodiment will be described focusing on the points of difference between the first embodiment described above and this second embodiment. At this point, descriptions on items including the same content and the like are omitted.

[0203] The electric equipment 1 in the second embodiment has: a first mode in which the rotor 51, that is, the diaphragm portion 5 is held in a stopped state; a second mode in which the rotor 51 is rotatable (the rotor 51 is in a free state), that is, The diaphragm portion 5 is displaceable (the diaphragm portion 5 is in a ...

no. 3 example

[0251] Next, a third embodiment of the present invention will be described.

[0252] Figure 21 is a perspective view showing a vibrating element in a third embodiment of the electric device according to the present invention. Now, using Figure 29 In the following description of , the upper side is referred to as "upper", the lower side is referred to as "lower", the right side is referred to as "right", and the left side is referred to as "left".

[0253] Hereinafter, the electric device 1 in the third embodiment will be described focusing on the points of difference between the first embodiment or the second embodiment described above and this third embodiment. At this point, descriptions on items including the same content and the like are omitted.

[0254] The electric device 1 in the third embodiment has a feature in that, in addition to the first to fourth modes described in the second embodiment, the electric device 1 can further use the fifth mode and the sixth mod...

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PUM

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Abstract

An ultrasonic motor of the present invention has a vibrating element 6. The vibrating element 6 includes a first piezoelectric element 62 that undergoes extension and contraction by application of an AC voltage, a reinforcing plate 63 having a contact portion 66 and an arm portion 68 , and a second piezoelectric element 64 that undergoes extension and contraction by application of an AC voltage. The first piezoelectric element 62, the reinforcing plate 63, and the second piezoelectric element 64 are laminated in this order. The vibrating element 6 is fixedly mounted through the arm portion 68 so that the contact portion 66 abuts on a driven element (rotor 51). Further, the vibrating element 6 has a body portion and a length L of the body portion in a direction in which the vibrating element 6 extends and contracts by application of the AC voltage is 1 to 20mm.

Description

technical field [0001] The present invention relates to an ultrasonic motor, an operating device, an optical mechanism and an electric device. Background technique [0002] Hitherto, ultrasonic motors for driving driving elements such as rotors, linear actuators, etc. by vibrating the vibrating elements are known. In such an ultrasonic motor, a vibrating element has a piezoelectric element, and is subjected to vibration by applying an AC voltage to the piezoelectric element. The technology described in Japanese Unexamined Patent Publication No. 2000-333480 is considered as the above-mentioned technology. [0003] However, in conventional ultrasonic motors, research on the relationship between the size of the vibrating element and the reliability of driving or breakage of the driver IC due to dropping has not been well conducted. Contents of the invention [0004] An object of the present invention is to provide an ultrasonic motor, an operating device, an optical mechani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H10N30/00G02B26/02G02B26/04H02N2/00H02N2/10H02N2/16H10N30/20
CPCG02B26/02H02N2/004H02N2/103H01L41/0913G02B26/04H10N30/2023
Inventor 宫泽修桥本泰治
Owner SEIKO EPSON CORP