A control device for a noncontact power supply device includes a power transmission coil for outputting an alternating magnetic flux upon receiving alternating electric power, and a power transmission control unit for controlling alternating electric power to be supplied to the power transmission coil. The power transmission control unit includes a first mode and a second mode. The first mode controls the alternating electric power to be supplied to the power transmission coil in order to transmit electric power, to be supplied to a load of a power reception device, to a power reception coil, and the second mode controls the alternating electric power for supplying electric power less than the electric power transmitted by the first mode to the power transmission coil. After being activated, the power transmission control unit selects initially the first mode.

This disclosure provides a smart toothbrush, including a head, a front handle, a grip handle, a turning unit, a drying unit, a testing, unit, a power unit and a charge base. The front handle of the toothbrush using the disclosed device can revolve automatically by applying water on the bristles. The toothbrush resets automatically after being aired and dried for convenient and clean application for the next use.

The present invention relates to a toothbrush and provides an electric toothbrush comprising a hollow hand-held casing; the hand-held casing is disposed therein with a rechargeable lithium battery via a battery mount, and a brushless motor via a motor mount. The battery mount accommodates a PCT connected with the rechargeable lithium battery. The PCB is disposed with a control switch via a waterproof mount and a waterproof switch case. The press portion of the control switch is exposed from the switch hole of the hand-held casing. The vibration shaft of the brushless motor passes through the motor mount to an exterior of the hand-held casing. The vibration shaft is connected to a toothbrush head. The hand-held casing is threadedly connected to the rear cap at a bottom end thereof. The hand-held casing has a cross section in shape of a circle.

A multi-function charging coil bobbin (90) for a power toothbrush (10) configured to improve the durability of the toothbrush and to simplify the assembly process. The coil bobbin (90) provides a bridge spring (98) for tolerance mitigation and shock protection, and also provides a coil winding surface (92) such that the bobbin (90) can be wound prior to final assembly. The coil bobbin (90) may be unitary in structure for low cost.

Embodiments of the invention relate to a method and system for transferring power wirelessly to electronic devices. The system can utilize magnetic coupling between two coils at close proximity to transfer sufficient power to charge an electronic device. Embodiments of the invention pertain to an array of spiral coils that can be used to transmit power for transfer to receiver coils. Potential applications of this technology include charging consumer electronic devices (cell phones, laptops, PDAs, etc), developing hermetically sealed devices for extreme environments, and less invasive transcutaneous energy transfer (TET) systems. Various embodiments of the subject system can be referred to as PowerPad system. Embodiments can incorporate one or more of the following: planar inductors, PCB transformers, and very high frequency power supplies. Embodiments of the invention also pertain to planar inductors having characteristics that allow the production of even magnetic field, as well as systems that incorporate such planar inductors.

One or more exemplary embodiments comprise an inductive charging system for charging a rechargeable battery for a handheld appliance, said inductive charging system comprising: (a) an inductive charging shell comprising a power transmitter, a printed circuit board (PCB), at least one charging shell magnet, and a power supply cord; and (b) a handheld appliance comprising a handpiece, wherein within said handpiece is disposed a rechargeable battery, at least one handpiece magnet adapted to attract to the at least one charging shell magnet, and at least one power receiver.

An electric apparatus unit comprises electric apparatus and charging stand. Electric apparatus includes rechargeable battery, a driver that drives through electric power supplied from rechargeable battery and power receiver that supplies the electric power to rechargeable battery. Charging stand includes power transmission coil that supplies electric power to power receiver and support that supports electric apparatus.

An electric toothbrush includes a stem member on which a replaceable toothbrush is mounted. The stem member is made of synthetic resin and has a cavity for accommodating a DC motor and a vibration shaft connected to the DC motor. One end of the cavity is opened for inserting the DC motor and the vibration shaft together, and the other end thereof is closed. A free end of the vibration shaft is rotatably supported at the closed end of the cavity. The cavity has a cone-shaped wall so that the DC motor is firmly held in the cavity by a rigid contact between a shoulder portion of the DC motor and the cone-shaped wall.

An electric toothbrush (100), comprising a brush handle (10) and a brush head (20), the brush handle (20) comprises an electromotor (21), a transmission assembly (22) and a transmission rod (23), the transmission assembly (22) comprises a main body (221), a gear (222), a connecting arm (223) and a positioning member (224), the electromotor (21) has a rotor engaged with the gear (222), the gear (222) is arranged with a connecting rod (225), which has an end fixed at an eccentric position of the gear (222) and another end arranged on the main body (221), wherein the connecting arm (223) has an end arranged on the connecting rod (225) and another end arranged on the positioning member (224), and the transmission rod (23) has an end running through the positioning member (224) and the main body (221) and extending to the brush head (10).