Abstract: The present invention is an ultrasonic wave atomizing device including: a liquid absorbent wick (22) for absorbing a solution from a solution container; and a vibrating plate (32) which has multiple micropores (36) penetrating the vibrating plate (32) in a thickness direction and is for atomizing the solution which has been supplied via the liquid absorbent wick (22) by vibration of a piezoelectric element (31), and the vibrating plate (32) includes a truncated-cone-shaped convex part (37). This structure makes an atomizing height higher, which improves diffusibility of atomized liquid.

Abstract: An atomizer is provided to include a pivot member mounted on an upper portion of a device body so as to pivot up and down. The pivot member includes a holding portion configured to hold a vibrating plate movable up and down relative to the pivot member so as to bring the vibrating plate into face contact with the upper end surface of a wick by its own weight when the pivot member pivots downward. The device body includes a restriction portion that comes into contact with the pivot member to restrict the pivoting downward of the pivot member, while the vibrating plate is in face contact with the upper end surface of the wick.

Abstract: An ultrasonic atomizing device (1) includes (i) a liquid absorbent wick (22) which absorbs liquid from a solution container (20) and (ii) an absorber (23) which supplies, to a vibrating plate (32), the liquid absorbed by the liquid absorbent wick (22). The absorber (23) is configured to be provided to or removed from the ultrasonic atomizing device (1) together with the solution container (20) when the solution container (20) is provided to or removed from the ultrasonic atomizing device (1).

Abstract: One embodiment provides a piezoelectric vibrator driving circuit for driving a piezoelectric vibrator, the piezoelectric vibrator having an equivalent circuit in which an LC series resonance circuit, an equivalent resistor Rx connected in series thereto and a damping capacitor Co connected in parallel to them are provided, the driving circuit is configured: to detect a driving current Iz flowing through the entire piezoelectric vibrator; to detect a damping current Iy flowing through the damping capacitor Co; to calculate a series resonance current Ix flowing through the LC series resonance circuit by subtracting the detected damping current Iy from the detected driving current Iz; and to perform a phase adjustment so that a phase difference between the calculated series resonance current Ix and a driving voltage Ve to be applied to the piezoelectric vibrator becomes approximately 0.

Abstract: An ultrasonic atomizing unit is provided which can spray fine particles of a liquid farther without greatly increasing a voltage applied to a piezoelectric vibrator and using a fan. An annular atomizing member (1) is provided and ultrasonically vibrates a vibrating plate (12) with a piezoelectric vibrator (11) to atomize a liquid. The atomizing member (1) is elastically sandwiched and held by a casing (3) through a pair of annular elastic rings (2) that are in contact with the atomizing member (1). A maximum facing width in a radial direction between each annular elastic member and one surface of the atomizing member (1) on one side in the radial direction from the center of the atomizing member (1) is 40% of a radial direction width of the piezoelectric vibrator (11) on one side in the radial direction from the center of the piezoelectric vibrator (11).

Abstract: There is provided an input device, including: a base; an operation portion; and an oscillatory wave motor including a stator and a rotor, the rotor thrusting the stator, the oscillatory wave motor providing haptic feedback to an operator via the operation portion. Displacement of one of the stator and the rotor from the base in an axial direction is allowed, displacement of the one of the stator and the rotor in a rotational direction is restricted, and the operation portion includes the other one of the stator and the rotor.

Abstract: One embodiment provides a piezoelectric vibrator driving circuit for driving a piezoelectric vibrator, the piezoelectric vibrator having an equivalent circuit in which an LC series resonance circuit, an equivalent resistor Rx connected in series thereto and a damping capacitor Co connected in parallel to them are provided, the driving circuit is configured: to detect a driving current Iz flowing through the entire piezoelectric vibrator; to detect a damping current Iy flowing through the damping capacitor Co; to calculate a series resonance current Ix flowing through the LC series resonance circuit by subtracting the detected damping current Iy from the detected driving current Iz; and to perform a phase adjustment so that a phase difference between the calculated series resonance current Ix and a driving voltage Ve to be applied to the piezoelectric vibrator becomes approximately 0.

Abstract: An electric toothbrush is disclosed in which a brush body is simultaneously oscillated and reciprocated for brushing every gap between teeth. The electric toothbrush includes a casing main body, an arm extending above the casing main body, a brush body arranged in a top end of the arm, and an ultrasonic motor arranged in a top end inside of the arm for driving the brush body. An output shaft of the ultrasonic motor and the brush body are connected to each other by connecting piece. In this construction, the brush body is movable along the output shaft. The electric toothbrush further includes a reciprocating mechanism, which is provided between the arm and a holder of the brush body, and which reciprocates the brush body.

Abstract: A process for fabricating a PTC thermistor device. A pair of opposing electrodes are formed on either major surface of a ceramic plate PTC thermistor element. Metallic plate heat radiation fins are secured to the opposing electrodes by brazing in a non-oxidizing environment. The PTC thermistor element is then heat treated in an oxidizing environment. Optionally, the opposing electrodes may include shield layers for preventing emission of gas from the PTC thermistor element during brazing.

Abstract: In this piezoelectric oscillation assembly there are included several piezoelectric oscillation devices, each including a first oscillation plate, a piezoelectric oscillation element attached to the first oscillation plate, and a second oscillation plate layered against the first oscillation plate so as to define an acoustically enclosed space between them. At least one of the oscillation plates is common to all of the several piezoelectric oscillation devices. It may be the first oscillation plate which is common to these several piezoelectric oscillation devices, or the second oscillation plate, or both. And the acoustically enclosed spaces of these several piezoelectric oscillation devices may be mutually isolated, or alternatively a one common acoustically enclosed space may be defined between the first oscillation plate and the second oscillation plate for all of these several piezoelectric oscillation devices.

Abstract: A piezoelectric transducer is formed by fixedly laying a second oscillating plate over a first oscillating plate to which a piezoelectric oscillating assembly having a piezoelectric oscillating element is adhered, so as to define an acoustically sealed space. And, as the first oscillating plate oscillates by being driven by the oscillation of the piezoelectric oscillating assembly, the second oscillating plate oscillates by being driven thereby by way of the sealed space. Due to the shifting of the resonance frequencies of the piezoelectric oscillating assembly and the first and the second oscillating plates, and also due to the restriction of the oscillation by the sealed space, a wide frequency property is obtained, making this piezoelectric transducer particularly suitable for use as a speaker or as a microphone.