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Ultrasonic motor, and electronic timepiece having ultrasonic motor

An ultrasonic motor and ultrasonic technology, applied in electromechanical clocks, piezoelectric effect/electrostrictive or magnetostrictive motors, clocks, etc., can solve problems such as difficulties, increased sliding, and deterioration of oil quality, and achieve durability excellent effect

Inactive Publication Date: 2008-12-24
KITAGAWA INDS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, when a large amount of carbon black is added to the raw material resin, since the friction coefficient of the surface of the ultrasonic rotor decreases, the sliding of the contact surface between the ultrasonic rotor and the ultrasonic stator increases. Therefore, the spring force of the pressure spring is controlled to be Proper value is very difficult
In the case of oiling the contact surface between the ultrasonic rotor and the ultrasonic stator, the quality of the oil deteriorates due to long-term use, which shortens the maintenance time of the machine

Method used

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  • Ultrasonic motor, and electronic timepiece having ultrasonic motor
  • Ultrasonic motor, and electronic timepiece having ultrasonic motor
  • Ultrasonic motor, and electronic timepiece having ultrasonic motor

Examples

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Embodiment Construction

[0029] (1) [Structure of Ultrasonic Motor]

[0030] 1-3, the ultrasonic motor 130 of the present invention is provided with an ultrasonic stator 122, an ultrasonic motor support 124, an ultrasonic motor shaft 132, an ultrasonic rotor 134, and an ultrasonic motor guide substrate 136. The ultrasonic motor shaft 132 has a collar portion 132a, a first shaft portion 132b, a second shaft portion 132c, and a tip shaft portion 132d.

[0031] The ultrasonic motor support 124 has a first through hole 124a through which the ultrasonic motor shaft 132 passes, and a second through hole 124b through which the conduction structure of the ultrasonic motor guide substrate 136 passes. The ultrasonic motor support 124 is fixed to the first shaft portion 132b of the ultrasonic motor shaft 132 by passing the first through hole 124a through the ultrasonic motor shaft 132 . The lower surface of the ultrasonic motor support 124 is in contact with the collar portion 132 a of the ultrasonic motor shaf...

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PUM

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Abstract

The present invention relates to an ultrasonic motor, an electronic clock, and an electronic instrument including an ultrasonic rotor formed of a raw material resin as a thermoplastic resin. Furthermore, the present invention includes an ultrasonic rotor that contacts an ultrasonic stator in a pressurized state, and forms an ultrasonic motor in which the ultrasonic rotor is formed of a filler resin. Alternatively, an electronic clock having the ultrasonic motor is formed. In addition, an electronic instrument including the ultrasonic motor is also formed.

Description

technical field [0001] The present invention relates to an ultrasonic motor including an ultrasonic rotor formed of a raw material resin as a thermoplastic resin. In addition, the present invention also relates to an analog display type electronic clock having a display wheel rotated by rotation of an ultrasonic motor. In addition, the present invention also relates to an electronic device with an ultrasonic motor including a power supply, a vibration source, a control circuit, and an ultrasonic motor. Background technique [0002] Referring to FIG. 12 , a conventional ultrasonic motor 930 includes an ultrasonic stator 922 , an ultrasonic motor support 924 , an ultrasonic motor shaft 932 , an ultrasonic rotor 934 , and an ultrasonic motor guide substrate 936 . The ultrasonic motor shaft 932 includes a collar portion 932a, a first shaft portion 932b, a second shaft portion 932c, and a tip shaft portion 932d. The ultrasonic motor support 924 has a first through hole 924a thr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/12H01L41/08G04C3/12H01L41/09H02N2/00
CPCG04C3/12H02N2/007H02N2/166
Inventor 远藤守信内山哲夫山口晃生近藤康雄青山宽重城幸一郎竹田和俊竹中雅人铃木重男所毅
Owner KITAGAWA INDS
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