Honda Electronics Co., Ltd.

Honda Electronic Co., Ltd.

Honda Electric Co., Ltd.

Asmo Co., Ltd.

Honda Denshi Kabushiki Kaisha

Keisuke Honda

Toshiaki Miyamoto

Hideo Kouzaka

Masahiko Komoda

Masanori Sato

Hiroki Endo

Yukinobu Tomida

Hideo Kosaka

Yasuyoshi Honda

Ryosuke Suganuma

A plurality of small bubbles are continuously generated by transmitting to washing water in a vessel, a high frequency ultrasonic wave from an ultrasonic vibrator which generates a high frequency output from a high frequency oscillator and intermittently transmitted low frequency ultrasonic waves from ultrasonic vibrators wherein the intermittent low frequency ultrasonic waves are produced from low frequency outputs from low frequency oscillators for short periods of time. The plurality of small bubbles are destroyed by the intermittent ultrasonic waves and the pressure from the sound of the ultrasonic waves in the washing water is thereby increased and washing performance is improved.

Ultrasonic washing method and apparatus using continuous high frequency

A vibration type driving device in which a piezoelectric element is interposed between a pair of blocks connected to each other by a rod, a part of the surface of the piezoelectric element being covered with an electrode. Application of high frequency voltage to the electrode causes resonance of vertical vibrations and bending vibrations, which is effective to generate elliptical movement of the end surface of the block. The electrode is divided into three or more sections, preferably into four sections. A change-over switch is provided for selecting the electrode sections to be energized in accordance with the direction of the driving force. This permits linear movement of an article in a desired direction.

Vibration type driving device

The present invention is directed to an ultrasonic driving member comprising a rotor having slide projections in contact with an edge face of a piezoelectric vibrator.

Ultrasonic driving motor

A drive circuit is used in a Langevin type ultrasonic bolt-tightening motor in which a motor drive voltage having a given frequency is applied to a piezo-electric element in a stator section, the resulting longitudinal and torsional vibrations being effective to rotate a motor section. The drive circuit has a longitudinal vibration sensor for detecting the longitudinal vibration in the stator section, a torsional vibration sensor for detecting vibration in the stator section and a frequency controller for controlling the frequency of the motor drive voltage such that the phase difference between the detection signals of the longitudinal and torsional vibration sensors becomes 90 degrees so as to provide maximum efficiency. Thus, the frequency of the motor drive voltage can be feedback controlled to maintain an optimum drive frequency despite the varying of the optimum drive frequency due to changes in various factors.

Drive circuit for langevin type ultrasonic bolt-tightening motor

Ultrasonic waves of a low frequency and a high frequency are alternately emitted from one vibrator to liquid in a tank, cavitation generated due to the ultrasonic wave of the low frequency is eliminated and changed to small cavitation for forming the next large cavitation due to the ultrasonic wave of the high frequency and next the ultrasonic wave of the low frequency is emitted to the liquid in a tank and large cavitation is formed, whereby the cleaning effect is improved.

Cleaning method for using generation of cavitation

When output signals of different multi-frequencies are supplied to one vibrator every short time interval, ultrasonic waves generating from the vibrator having continuing frequencies in which frequencies between separated resonance frequencies are supplemented. Therefore, the cleaning effect is improved by the ultrasonic waves.

Multi-frequency ultrasonic cleaning method and apparatus

A stator includes piezoelectric vibrators of piezoelectric ceramic put between a long metal block and a short metal block, which are fixed with screw threads at opposite ends of a bolt. When a high frequency alternating current voltage is applied to the piezoelectric vibrators, elliptic compounded vibration, progressive vibration and so on, which is torsional vibration due to the screw threads of the bolt compounded with longitudinal vibration due to the expansion and contraction of the piezoelectric vibrators, is generated on the end surface and the side surface of the stator. A driven member is engaged on the end surface or the side surface of the stator and is driven by the elliptic vibration.

Ultrasonic driving device

In the present invention, a stator consists of a piezoelectric vibrator having divided electrodes on at least one end, alternating current voltage is applied to each of the divided electrodes of one end and one electrode or each of the divided electrodes of the other end of the stator, and a member to be driven is placed on the end or side portion of the stator. The member is reversibly driven by a reversible circumferential progressive wave produced on the end and side portions.

In the present invention, an electrode in both end portions of a piezoelectric vibrator is respectively divided in two, alternative current voltage is supplied to each of electrodes of the both end portions, whereby reversible circumferential progressive wave arises on the both end portions or side portion of a state consisting of the piezoelectric vibrator. A member to be driven is composed on each of the both end portions or the side portion of the stator.

A stator is composed by two metal blocks, a piezoelectric vibrator and vibrators, and two electrodes, in which one electrode is divided in two at least, the metal blocks, the piezoelectric vibrator or vibrators and two electrodes are fixed by means of a bolt or means of adhesive thing, and a member to be driven composed on the nut or the end or side portion of the stator.

A rotary member rotatably supports a plurality of balls, disks or rolls which are pressed on a stator by a pressure member. When the stator generates progressive wave, the balls, disks or rolls are rolled on the stator and the pressure member by the progressive waves. Since the balls, disks or rolls are rolled on the stator and the pressure member, the wear of the stator, the pressure member and the balls, disks or rolls is decreased. Lubricative oil may be applied to the circumference of the balls, disks or rolls of the rotary member.

A stator consists of a cylindrical piezoelectric vibrator and electrodes respectively divided in two in its inside and outside portions. When alternative current voltage is applied to respective one of divided electrodes in the inside and outside portions, reversible progressive waves generate on the end and side portions of the stator. When a rotary member is combined with the end or side portion of the stator, the rotary member can reversibly be moved.

An ultrasonic cleaning device comprises an ultrasonic pump having a hollow cover forming a spouting port in a narrow portion thereof, an ultrasonic vibrator in a wide portion thereof and a liquid supply port in a side portion thereof. An oscillator is connected to the ultrasonic vibrator. One part of the ultrasonic wave from the vibrator is passed through the spouting portion straight and the other part of the ultrasonic wave is reflected on the inside of the cover and is passed through the spouting port. An object or objects are opposed to the spouting port of the cover.

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Aichi, Japan

Keisuke Honda