Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Works, Ltd.

Panasonic Electric Works Co., Ltd.

Panasonic Corporation

Motoharu Muto

Hiroshi Matsumoto

Daisuke Tsukada

Masamichi Miyaguchi

Takayoshi Tanizawa

Masaki Ikeda

Kota Kitamura

Hidenori Shimizu

Fumihiro Nishio

Norihiro Iwamura

Masaaki Okada

Satoshi Kajiyama

Atsushi Takeyama

Junji Nakamura

Shinji Tsutsui

Yuki Yoda

Yousuke Kurata

Koichi Hashimoto

Masayuki Hayashi

Hideaki Abe

Hiroshi Miyazaki

Tatsuya Miwa

Itaru Murui

Hiroyuki Tsubakimoto

Kozo Kawai

Atsumasa Kubota

Itaru Saida

Naotake Tanaka

Shinji Nishimura

Yuichi Nishibori

Hiroki Inoue

Naoki Shimizu

Masatoshi Dairin

Hiroyuki Inoue

Takeo Iijima

Shosuke Akisada

Masari Muramatsu

Munekiyo Ikebe

Masamichi Nakamura

Takashi Yukawa

Masayuki Suzuki

Takeo Iljima

Hiromitu Inoue

Yuuichi Nishibori

Masaki Nagano

Yoshiharu Hayashi

Daiju Kinoshita

A motor for electric power tools according to an embodiment includes: a rotor having a rotational shaft; a stator having a coil to rotate the rotor; a first substrate mounting a sensor element to detect a rotational position of the rotor; and a second substrate mounting a switching element to change, based on a result of detection by the sensor element, a conducting direction in which a current flows with respect to the coil. The first substrate and the second substrate are arranged side by side along, and intersect at right angles with, the rotational shaft.

Motor for electric power tools and electric power tool

A motor includes: a stator; a rotor axially aligned with the stator; a circuit board; and a heat dissipating plate. The stator includes: an iron core including teeth; an insulator covering one end surface, in the axial direction, of the iron core; and a coil wound around the teeth. The insulator includes an electrically insulating material having a lower rate of heat transfer than a material included in the iron core. The heat dissipating plate is attached to the insulator in a state in which the heat dissipating plate is in contact with the insulator without being in contact with the iron core, and the circuit board is attached to the heat dissipating plate in a state in which the circuit board is in contact with the heat dissipating plate without being in contact with the iron core.

Motor and electric tool equipped with the same

A brushless motor includes: a stator core having a cylindrical yoke portion and a teeth portion having a shape protruding from an inner circumferential surface of the yoke portion; and a rotor that is disposed inside the stator core, spaced apart from the teeth portion, and uses a center axis of the yoke portion as an axis of rotation. The yoke portion includes, on its outer circumferential surface, a notch portion at a position on the back side of the teeth portion. The notch portion has a circumferential width smaller than a circumferential width of the teeth portion.

Brushless motor and electrically powered tool

The battery pack includes: a charging terminal receiving power from a charger while connected to the charger; a battery connected to the charging terminal and recharged by power from the charger via the charging terminal; a protective circuit performing a protective operation of detecting an overcharge of the battery by using power from the battery while receiving a driving signal, and terminating the protective operation when receiving no driving signal; an activation terminal receiving an activation signal from the charger while connected to the charger; an activation circuit connected to the activation terminal and configured to output the driving signal to the protective circuit while receiving the activation signal from the charger via the activation terminal; and an auxiliary activation circuit connected to the charging terminal and configured to provide the driving signal to the protective circuit while the battery receives power from the charger via the charging terminal.

Battery pack

The electric tool is powered by a secondary battery as a power source, and includes: an output section configured to be transmitted thereto a rotation of a motor directly or through a decelerator; a voltage measurement section that measures a battery voltage; a storage means that stores, as a reference voltage, a voltage value of the battery voltage measured preliminarily when a motor-lock is occurring; and a control means that controls a driving of the motor. The control means is configured to decide that the motor is being locked and then stop or decelerate the motor upon detecting that the battery voltage measured through the voltage measurement section is maintained lower than or equal to the reference voltage stored in the storage means for a predetermined period of time during the driving of the motor.

Rechargeable electric tool and method for manufacturing rechargeable electric tool

A battery pack includes a status detection unit for detecting a status of a battery; a switch unit for interrupting a discharging path of the battery; a notification unit for notifying a user of the status of the battery; an operation unit operable by the user; and control unit for opening and closing the switch unit. The control unit is configured to have the switch unit interrupt the discharging path of the battery when the status of the battery detected by the status detection unit is abnormal. Further, the control unit is configured to have the notification unit notify the user of the availability to restart a discharging operation and close the switch unit in response to an operation signal inputted from the operation unit to make the battery pack dischargeable when the status of the battery detected by the status detection unit is recovered from the abnormal status.

Battery pack including a status detection unit to detect an abnormal status and a notification unit to notify a user of an availability to restart a discharging operation

A massage machine using a small size and high torque brushless DC motor includes a driving unit moved up and down along guide rails of a chair and a first motor for moving the driving unit up and down. A pair of treatment head bases are driven reciprocally in opposite directions to each other; and a second motor reciprocally drives the treatment head bases in opposite directions to each other. Treatment heads are respectively supported by the treatment head bases; and a third motor drives the treatment heads in a plane substantially perpendicular to a backrest. A control circuit drives the respective motors respectively independently of one another. Each motor is a brushless motor. A control circuit corrects, corresponding to a load imposed on the brushless DC motor, a waveform of a drive signal applied to a winding of the brushless DC motor so as to allow a current flowing through the winding of the brushless DC motor to have a substantially sinusoidal waveform making it possible to reduce discomfort due to motor noise, and to accurately control the motor rotation speed.

Massage machine

A massaging device having an applicator driven by a plurality of driving unit to move along two or more different axes to generate a combined massaging action to be applied to the user's body. A controller holds individual speed data each defining a speed at which each of the driving units reciprocates the applicator along each of the different axes, and to control the driving units to reciprocate the applicator in accordance with the associated speed data. The controller controls the speed of the applicator along one of the axes independently from the speed of the applicator moving along another of the axes. Accordingly, the applicator's movements along the different axes can be free from being interfered with each other even being subject to a load, thereby assuring to continue the combined massaging action.

Massaging device having a controller to give different reciprocating movements to each applicator along different axes

A power tool includes a driving unit for performing screw tightening operations; a motor for rotatably driving the driving unit; a trigger switch for turning on and off the motor; and a control circuit, accommodated in a main body of the power tool, for monitoring the screw tightening operations. The control circuit having a screw tightening completion detection unit for detecting completion of a screw tightening operation, a screw tightening count unit for counting the number of detected tightening operations, a screw tightening number setting unit for presetting the number of screws to be tightened, a screw tightening completion notifying unit for notifying completion of the screw tightening operations when the number of detected tightening operations reaches the preset number of screws.

Power tool

A massage machine is provided, which can efficiently create a massage program to meet the user's preference by reflecting a change in massage parameter performed during an execution of the massage program on the next execution of the massage program. This massage machine comprises an input unit configured to input the change in massage parameter, first memory for temporarily storing the change in massage parameter input by the input unit in a desired massage stage during the execution of the massage program, second memory for storing the change in massage parameter provided from the first memory after the completion of the massage program, and a control unit configured to modify the desired massage stage according to the change in massage parameter stored in the second memory at the next execution of the massage program.

Massage program control method, massage machine using the method, and controller for the massage machine

A massaging device gives different massaging patterns to different parts of a user's body for enhanced and pleasant massaging effect. The device includes an applicator applying a massage force to the user, and at least two driving units for driving the applicator to make different reciprocating movements respectively in different directions from each other. The least two driving units is controlled to reciprocate the applicator for providing the massaging force in different massaging patterns. A sensor is provided to acknowledge the position of the applicator. A massage pattern selector is provided to select one of the massaging patterns depending upon the position of the applicator.

Massaging device having controller to remove dead points during operation

A massage chair has a seating surface, a backrest and armrests at the opposite left and right sides. A covering member vertically displaceable to be opened and closed is provided on the upper surface of an armrest main body of each armrest. A massaging device is provided on at least either one of the lower surface of each covering member and the upper surface of the corresponding armrest main body. The massaging devices are driven with hands and arms tightly held between the lower surfaces of the covering members and the upper surfaces of the armrest main bodies, and the upper surfaces of the covering member serve as arm resting surfaces with the covering members closed and the massaging means not driven. There can be provided a massage chair whose arm resting positions are not restricted when the massage chair is not used to massage the hands and arms.

Massage chair

This massage machine comprises a seat, a leg-rest, a footrest, an electric extendable mechanism, a link mechanism, and a controller. The footrest is movably linked to a lower end of the leg-rest to be movable relative to the leg-rest, and is provided with air bagsconfigured to restrain a foot of the user. The electric extendable mechanism and the link mechanism are configured to move the footrest relative to the leg-rest. The controller gives the user a leg stretching mode, and in the leg stretching mode, the controller controls the electric extendable mechanism and the air bags such that the electric extendable mechanism moves the footrest relative to the leg-rest while the air bags restrains the foot of the user.

An ultrasonic wave applying apparatus which is safe and convenient for use. The apparatus includes an hand-held applicator having a vibration element which is, in use, contact with a skin of a user to apply ultrasonic waves to the skin, a power source providing a DC voltage, an oscillator circuit which is energized by the DC voltage from the power source to generate an oscillating output for driving the vibration element, and a load detecting circuit which monitors whether the vibration element is loaded such as by contact with the skin and provides a load detection signal when the vibration element is so loaded. In addition, a motion detecting circuit is provided to monitor whether the vibration element is moving and give a motion detection signal when the vibration element is so moving. A control circuit is connected to the load detecting circuit and the motion detecting circuit for controlling the driving circuit to reduce the oscillating output being fed to the ultrasonic vibration element when the load detection signal is not received within a predetermined first time period or when the motion detection signal is not continuous over a critical time duration within a predetermined second time period even in the presence of the load detection signal being detected within the first time period.

Ultrasonic wave applying apparatus

Growing community of inventors

Osaka, Japan

Motoharu Muto