Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Panasonic Electric Works Power Tools Co., Ltd.

Hiroyuki Kaizo

Tadashi Arimura

Toshiharu Ohashi

Yutaka Yamada

Kenichirou Inagaki

Masatoshi Atsumi

Sachiko Atsumi

Kenichiro Inagaki

Fumiaki Sekino

A control device of an electrostimulator is used in the electrostimulator including an electrode, an angular velocity sensor, and a notifier. The control device includes a controller that controls electrostimulation which is output from the electrode and that counts the number of times of movements as the number of times of the reciprocating movements of the target site; and a storage that stores preset information. The storage stores a first threshold value and a second threshold value. The controller causes the notifier to display movement information including the number of times of the movements, based on a state in which an angular velocity reaches the second threshold value after reaching the first threshold value.

Electrostimulator and control device of same

A control device of an electrostimulator is used in the electrostimulator including an electrode and an angular velocity sensor. The control device includes a controller that controls electrostimulation which is output from the electrode and a storage that stores a first threshold value and a second threshold value. The first threshold value is greater than the second threshold value. The controller causes the electrode to output electrostimulation based on a state in which angular velocity reaches one threshold value of the first threshold value and the second threshold value, and then, reaches the other threshold value.

An electric power tool includes a voltage step-up condition setting operation unit that serves as a human machine interface and a voltage converter capable of performing a voltage step-up operation to raise a voltage supplied from a power supply and supply a raised voltage to a motor. The voltage converter is further capable of changing a voltage step-up level in the voltage step-up operation in accordance with the operation of the voltage step-up condition setting operation unit. A driving state detection unit generates a driving state signal corresponding to a driving state of the electric power tool. A control unit controls a stop timing of the motor in accordance with the driving state signal.

Electric power tool

An adapter includes a converter unit which increases at least one of voltage and current outputted from a battery pack and supply the increased the voltage and/or the current to a load, and a characteristic detection unit which detects at least one of the voltage outputted from the battery pack, the current outputted from the battery pack, a temperature of the battery pack, a voltage inputted to the load, a current inputted to the load and a temperature of the converter unit. The adapter further includes a control unit configured to control the converter unit to increase each of said at least one of the voltage and the current outputted from the battery pack to a corresponding reference value and perform a control operation of suppressing such increase to prevent an occurrence of over-current or over-discharge based on at least one detection result.

Adapter and electric power tool

An electric power tool includes a power supply, a motor capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit capable of performing a voltage step-up operation to raise a voltage supplied from the power supply and supply a raised voltage to the motor. The voltage step-up unit is configured to change the voltage step-up operation in accordance with whether a rotation mode of the motor is the forward rotation mode or the reverse rotation mode.

A voltage increasing control circuit is connected to a power supply to regulate power supplied to a load. The voltage increasing control circuit includes a voltage increasing unit configured to increase voltage that is supplied from the power supply, and supply the voltage to the load. A power estimation unit determines whether or not to increase the power supplied to the load. A voltage control unit controls the voltage increasing unit. When the power estimation unit determines to increase the power supplied to the load, the voltage control unit controls the voltage increasing unit to increase the power supplied to the load.

Voltage increasing control circuit and power tool

An electric power tool includes a motor; a speed reducer for transferring a rotational power of the motor at a reduced speed; and a reduction ratio changing unit for changing a reduction ratio of the speed reducer. The speed reduction mechanism includes an axially slidable changeover member and a gear member, the changeover member being engaged with or disengaged from the gear member depending on an axial slide position thereof. The reduction ratio changing unit includes a shift actuator for axially sliding the changeover member, a driving state detector for detecting a driving state of the motor, a slide position detector for detecting a slide position of the changeover member and a controller for driving the shift actuator and for changing a drive control of the shift actuator depending on detection results of the slide position detector unit and the driving state detector unit, respectively.

An electric power tool includes a motor; a speed reducer for transferring a rotational power of the motor at a reduced speed; and a reduction ratio changing unit for changing a reduction ratio of the speed reducer. The speed reduction mechanism includes an axially slidable changeover member and a gear member, the changeover member being engaged with or disengaged from the gear member depending on an axial slide position thereof. The reduction ratio changing unit includes a shift actuator for axially sliding the changeover member, a driving state detector for detecting a driving state of the motor, a slide position detector for detecting a slide position of the changeover member and a controller for driving the shift actuator and for temporarily decreasing or increasing a rotational power of the motor depending on detection results of the driving state detector and the slide position detector, respectively.

A speed-changing device includes a motor, a reduction gear train that reduces a rotation speed of the motor in accordance with a speed reduction ratio and transmits the rotation at the reduced speed, and a speed reduction ratio switching unit that switches the speed reduction ratio. The speed reduction ratio switching unit includes an actuator that switches the speed reduction ratio, a controller that controls the actuator, and a drive state detector that detects an index value representing load torque applied to the motor. The controller activates the actuator when the index value exceeds a first threshold value and activates the actuator when the index value fluctuates between the first threshold and a second threshold thereby forming an undulated pattern that satisfies a predetermined condition.

Speed-changing device

A wireless communications system includes a tool having a first wireless communications unit and a transceiver having a second wireless communications unit to receive a signal transmitted from the first wireless communications unit. Further, the transceiver has a setting unit for setting wireless communications parameters for wireless communications between the first and the second wireless communications unit, and the tool has a tool control unit for setting in the wireless communications unit the wireless communications parameters set by the setting unit and transmitted to the tool by wireless communication.

Growing community of inventors

Kyoto, Japan

Hiroyuki Kaizo