Abstract: A battery pack in one aspect of the present disclosure includes two or more battery blocks and a connection circuit. The connection circuit is connected to a positive terminal and a negative terminal of an electric work machine. The connection circuit connects the positive terminal and the negative terminal to a specific number of battery blocks included in the two or more battery blocks. The specific number varies depending on electrical properties of the electric work machine.

Abstract: A battery pack in one aspect of the present disclosure includes a first battery block, a second battery block, and a terminal portion. The terminal portion is configured to output a parallel voltage of the battery block and the second battery block connected in parallel in response to a state where a first electric working machine is connected to the terminal portion. The terminal portion is configured to output a first voltage of the first battery block and a second voltage of the second battery block individually in response to a state where a second electric working machine is connected to the terminal portion.

Abstract: A battery pack in one aspect of the present disclosure includes a first battery block, a second battery block, and a terminal portion. The terminal portion is configured to output a parallel voltage of the battery block and the second battery block connected in parallel in response to a state where a first electric working machine is connected to the terminal portion. The terminal portion is configured to output a first voltage of the first battery block and a second voltage of the second battery block individually in response to a state where a second electric working machine is connected to the terminal portion.

Abstract: A motor driven appliance in one aspect of embodiments of the present disclosure comprises a light source, a lighting unit, a motor, an operation unit, an operation detector, a reference signal output unit, a determination unit, and a control unit. The operation detector detects that the operation unit is operated, and outputs an operation detection signal that indicates that the operation unit is operated. The reference signal output unit outputs at least one reference signal that can be used as a reference for determining whether the detection by the operation detector is normal. The determination unit determines whether the operation unit is actually operated based on the operation detection signal and the at least one reference signal. The control unit controls operation of the lighting unit based on the determination made by the determination unit.

Abstract: A motor driven appliance in one aspect of embodiments of the present disclosure comprises a light source, a lighting unit, a motor, an operation unit, an operation detector, a reference signal output unit, a determination unit, and a control unit. The operation detector detects that the operation unit is operated, and outputs an operation detection signal that indicates that the operation unit is operated. The reference signal output unit outputs at least one reference signal that can be used as a reference for determining whether the detection by the operation detector is normal. The determination unit determines whether the operation unit is actually operated based on the operation detection signal and the at least one reference signal. The control unit controls operation of the lighting unit based on the determination made by the determination unit.

Abstract: A charging control device includes a control unit and a monitoring unit. The control unit performs at least one of controlling charging to a rechargeable battery and monitoring a state of a rechargeable battery, while outputting a state signal which indicates an operation state of the control unit. The monitoring unit determines whether or not the operation state of the control unit is a predesignated specified operation state based on the state signal outputted from the control unit.

Abstract: A motor driven appliance in one aspect of embodiments of the present disclosure comprises a light source, a lighting unit, a motor, an operation unit, an operation detector, a reference signal output unit, a determination unit, and a control unit. The operation detector detects that the operation unit is operated, and outputs an operation detection signal that indicates that the operation unit is operated. The reference signal output unit outputs at least one reference signal that can be used as a reference for determining whether the detection by the operation detector is normal. The determination unit determines whether the operation unit is actually operated based on the operation detection signal and the at least one reference signal. The control unit controls operation of the lighting unit based on the determination made by the determination unit.

Abstract: A charging control device includes a control unit and a monitoring unit. The control unit performs at least one of controlling charging to a rechargeable battery and monitoring a state of a rechargeable battery, while outputting a state signal which indicates an operation state of the control unit. The monitoring unit determines whether or not the operation state of the control unit is a predesignated specified operation state based on the state signal outputted from the control unit.

Abstract: A charging control device includes a control unit and a monitoring unit. The control unit performs at least one of controlling charging to a rechargeable battery and monitoring a state of a rechargeable battery, while outputting a state signal which indicates an operation state of the control unit. The monitoring unit determines whether or not the operation state of the control unit is a predesignated specified operation state based on the state signal outputted from the control unit.

Abstract: A rolling bearing device includes: an outer ring that has outer ring raceway grooves formed on an inner peripheral surface of the outer ring and a counter bore portion that is provided on an outer side of the outer ring raceway grooves in an axial direction; an inner ring member that has inner ring raceway grooves formed on an outer peripheral surface of the inner ring member; and a plurality of rolling elements that are interposed between the outer ring raceway grooves and the inner ring raceway grooves so as to freely roll and that are in contact with the inner ring raceway grooves of the inner ring member and the outer ring raceway grooves of the outer ring at a predetermined contact angle. A lubricant reservoir portion that stores lubricant is formed at a portion in the outer ring raceway grooves adjacent to the counter bore portion.

Abstract: A hub spindle bearing unit for the wheel is equipped with an inner ring having inner ring raceway surfaces formed on the outer peripheral surface of the shaft section itself of the hub spindle or an inner ring forming annular member formed separately from the shaft section, an outer ring member having outer ring raceway surfaces formed corresponding to the inner ring raceway surfaces, and balls rotatably disposed between the inner and outer rings, a groove section configured as a fragile section in which the strength against the shaft bending direction load exerted to the hub spindle is weaker than the strength of the hub spindle is formed in the outer ring member, and the groove section is deformed and broken earlier than the hub spindle when an excessive shaft bending direction load exceeding a load to be input during ordinary use is input to the hub spindle.

Abstract: A charger according to the present invention includes a charging power source circuit for charging a battery, a power source control circuit that controls the charging power source circuit, a microcomputer that operates the power source control circuit, and a constant voltage power source circuit that supplies electric power to both the power source control circuit and the microcomputer. The microcomputer is configured to permit or prohibit supply of electric power to the power source control circuit from the constant voltage power source circuit to the power source control circuit.

Abstract: A charging apparatus includes: a connecting unit; a charging unit; a temperature detecting unit; and an operation inhibiting unit. The connecting unit is electrically connected to a power supply portion installed inside a vehicle. The charging unit supplies at least a part of electric power supplied from the power supply portion via the connecting unit to a battery thereby to charge the battery. The operation inhibiting unit inhibits operation of a battery circuit provided in the battery when an ambient temperature detected by the temperature detecting unit has reached a preassigned designated temperature.

Abstract: A charging apparatus includes: a connecting unit; a charging unit; a temperature detecting unit; and an operation inhibiting unit. The connecting unit is electrically connected to a power supply portion installed inside a vehicle. The charging unit supplies at least a part of electric power supplied from the power supply portion via the connecting unit to a battery thereby to charge the battery. The operation inhibiting unit inhibits operation of a battery circuit provided in the battery when an ambient temperature detected by the temperature detecting unit has reached a preassigned designated temperature.

Abstract: A system for charging a power tool battery includes a charging device capable of charging a battery, a memory device capable of storing data of a plurality of sound patterns, a selecting device capable of selecting a sound pattern data from the plurality of sound patterns, and a sound generating device capable of generating a sound based on the selected sound pattern data when the charging operation of the battery by the charging device has been completed.

Abstract: A rolling bearing device includes: an outer ring that has outer ring raceway grooves formed on an inner peripheral surface of the outer ring and a counter bore portion that is provided on an outer side of the outer ring raceway grooves in an axial direction; an inner ring member that has inner ring raceway grooves formed on an outer peripheral surface of the inner ring member; and a plurality of rolling elements that are interposed between the outer ring raceway grooves and the inner ring raceway grooves so as to freely roll and that are in contact with the inner ring raceway grooves of the inner ring member and the outer ring raceway grooves of the outer ring at a predetermined contact angle. A lubricant reservoir portion that stores lubricant is formed at a portion in the outer ring raceway grooves adjacent to the counter bore portion.

Abstract: Battery pack may include rechargeable battery cells Battery charger may include power source circuit. Power source circuit may be connected with an external power source and battery cells. The external power source may supply power to the power source circuit and then, the power source circuit may supply charging current to battery cells. Battery charger may also include voltage detector for detecting the voltage input from the external power source to power source circuit. Battery charger may further include processor for controlling power source circuit. Processor may determine the amount of charging current supplied to battery cells based upon the external power source voltage detected by the voltage detector.

Abstract: A charging control device includes a control unit and a monitoring unit. The control unit performs at least one of controlling charging to a rechargeable battery and monitoring a state of a rechargeable battery, while outputting a state signal which indicates an operation state of the control unit. The monitoring unit determines whether or not the operation state of the control unit is a predesignated specified operation state based on the state signal outputted from the control unit.

Abstract: A charging apparatus includes: a connecting unit; a charging unit; a temperature detecting unit; and an operation inhibiting unit. The connecting unit is electrically connected to a power supply portion installed inside a vehicle. The charging unit supplies at least a part of electric power supplied from the power supply portion via the connecting unit to a battery thereby to charge the battery. The operation inhibiting unit inhibits operation of a battery circuit provided in the battery when an ambient temperature detected by the temperature detecting unit has reached a preassigned designated temperature.

Abstract: A rolling bearing assembly for a wheel includes: an inner ring member in which an inner ring raceway surface is formed on an outer peripheral surface of the inner ring member; an outer ring member having a fitting tubular portion on the inboard side that is fitted into an attachment hole of a vehicle body member, and an outer ring raceway surface is formed on an inner peripheral surface of the outer ring member; a plurality of rolling elements disposed between the inner and outer ring raceway surfaces; and a cage that holds the plurality of rolling elements. The bore diameter B of the fitting tubular portion of the outer ring member is smaller than the diameter C of a circumscribed circle of the rolling elements.