Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Takafumi Ohba

Atsushi Takahashi

Kazunori Watanabe

Yasuo Ibuki

Shinji Nishimura

Masanobu Yamasaki

Yoichi Takaoka

Koji Asakawa

Kotaro Yanagi

Mitsuru Takechi

A handheld personal care device according to the present disclosure includes: an operation switch configured to change a treatment operation of an operation unit; a sensor electrode configured to cause a change in capacitance depending on whether or not the grip unit is grasped; and a control device electrically connected to the operation switch and the sensor electrode and configured to control the treatment operation of the operation unit. The control device includes: a grasp detector configured to detect that the grip unit is grasped based on a change in capacitance of the sensor electrode; and a change permission part configured to permit the operation switch to change the treatment operation of the operation unit when the change permission part receives, from the grasp detector, grasp information indicating that the grip unit is grasped.

Handheld personal care device

Electric appliance () includes control section () having a plurality of operation modes, driving source () controlled by control section (), and switch () for switching between the operation modes. Control section () is configured to perform a first determination and a second determination in response to an operation duration of switch () in order to determine a type of the operation of switch (), and to set an operation mode after the operation of switch () in response to the results of the first and second determinations and an operation mode before the operation of switch (). In the present aspect, the operability of switching between the operation modes in electric appliance () is improved.

Electrical appliance with switchable operation modes

A hair removal tool is equipped with: a drive unit for driving a blade; a load detection unit for detecting the size of the load on the drive unit; and a control unit for changing the drive mode of the drive unit between a first drive mode for driving the drive unit at a first drive speed, a second drive mode for driving the drive unit at a second drive speed which is faster than the first drive speed, and a transition mode for driving the drive unit at a transition speed which is faster than the second drive speed. A first interval is set as the interval from when the drive mode is changed from the first drive mode to the transition mode until when the drive mode is changed from the transition mode to the second drive mode. A second interval is set as the interval from when the drive mode is changed from the transition mode to the second drive mode until when the drive mode is changed from the second drive mode to the first drive mode. The first interval is shorter than the second interval.

Hair removal tool

An amplitude control unit () detects the amplitude of a movable element () that reciprocates relative to a stator (), detects fluctuations in a load over time according to detected fluctuations over time in the amplitude, and detects an abnormality on the basis of the detected fluctuations over time in the load. The amplitude control unit () outputs the detected amplitudes to a control output unit (). The control output unit () controls a drive current (Id) for reciprocating the movable element () on the basis of the amplitude information supplied from the amplitude control unit ().

Method for driving linear actuator

An electric razor is provided with a linear actuator having a stator which includes an electromagnet and also having a moving element which includes a permanent magnet. The electric razor is also provided with an amplitude control unit and a control/output unit, which detect the amplitude and speed of the moving element on the basis of an induced voltage occurring in the winding of the stator as the moving element reciprocates, compare the detected speed and a formerly detected speed, and, according to the difference representing the result of the comparison, change a method for controlling the moving element.

Growing community of inventors

Shiga, Japan

Takafumi Ohba