Abstract: A battery-powered portable tool includes: a battery pack containing at least one all-solid-state battery cell; a tool main body, on which and/or inside which the battery pack is mountable and from which the battery pack is demountable; and a plurality of components contained in the battery pack and/or in the tool main body. The plurality of components is disposed in a first layout or physical configuration when the temperature is low and is disposed in a second layout or physical configuration when the temperature is high. The first layout or physical configuration differs from the second layout or physical configuration.

Abstract: An adapter is configured to be removably mounted to a rotary tool, the rotary tool having a battery mounting part configured such that a battery can be removably mounted thereto and an output shaft that is rotationally driven by power supply from the battery mounted to the battery mounting part. The adapter has a housing, a first mounting part that is formed on the housing and configured to be removably mounted to the battery mounting part, a second mounting part that is formed on the housing and configured such that the battery can be removably mounted thereto, and a detection part that is configured to detect the moving state of the adapter in at least one direction.

Abstract: An electric powered work machine includes an inverter circuit, a power-source-side switching element, a power-source-side resistor, at least one circuit-side resistor, and a fault determiner. The power-source-side switching element is arranged between a direct-current power source and the inverter circuit. The power-source-side resistor is connected in parallel to the power-source-side switching element. The circuit-side resistor is connected to the inverter circuit in such a state that electrical conduction is possible between a positive side and a negative side of the direct-current power source in the inverter circuit in a case where semiconductor switching elements in the inverter circuit are all OFF. The fault determiner determines whether the switching elements are short-circuited based on a voltage at a connection point between the power-source-side switching element and the inverter circuit.

Abstract: A laser marking system in one aspect of the present disclosure includes a laser marker, a beam receiving device, and a notifier. The laser marker includes a laser beam emitter. The beam receiving device includes a beam receiver and a transmitter. The beam receiver receives a laser beam emitted by the laser beam emitter. The transmitter transmits a first positional signal. The first positional signal indicates a receiving position of the laser beam in the beam receiver. The notifier notifies of the receiving position of the laser beam based on the first positional signal.

Abstract: A sander has a motor, an output shaft, a pad, a dust collecting fan arranged on the upper side relative to the pad, a motor cooling fan that is arranged on the upper side relative to the dust collecting fan, a housing and a cover. The housing has at least one air hole formed through the housing in a direction crossing an axis of the output shaft. The cover is arranged apart from the air hole outside the housing and covers the air hole.

Abstract: A power tool includes: a motor; an output shaft that is rotated by a rotational force of the motor; a chip-on-board light emitting diode disposed around the output shaft; and a suppression device configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less.

Abstract: A power tool includes a reducer that has a small size in an axial direction and is highly durable, although including a transmission mechanism. The power tool includes a motor, a reducer that reduces rotation from the motor, and an actuator to be actuated by the rotation reduced by the reducer. The reducer includes at least two stages of internal gears aligned in an axial direction, a preceding planetary gear and a succeeding planetary gear adjacent to each other in the axial direction to revolve within the internal gears, and at least two stages of carriers aligned in the axial direction. A carrier of the carriers supports the preceding planetary gear and the succeeding planetary gear radially overlapping each other with a single pin.

Abstract: A work tool switches smoothly between operational modes and has a lever member that is easily joined. The work tool includes an operation member, a lever member, and a switching member. The lever member is swingable about a support shaft in response to an operation on the operation member and is swingable with the support shaft placed through the lever member. The lever member has an elongated hole through which the support shaft is placed. The elongated hole extends along the lever member. The switching member is linked with a swing of the lever member to move linearly.

Abstract: A power tool with a small size in an axial direction includes a reducer allowing smooth and stable switching between variable speeds. The power tool includes a motor, a reducer that reduces rotation from the motor, and an actuator actuated by the rotation reduced by the reducer. The reducer includes a preceding internal gear in a preceding stage, a succeeding internal gear in a succeeding stage, an engagement member radially outward from the internal gears and switchable between a first position to restrict rotation of the preceding internal gear and a second position to restrict rotation of the succeeding internal gear, planetary gears that revolve within the internal gears, carriers supporting the planetary gears, and an operation unit to switch the engagement member selectively to the first position or the second position.

Abstract: A blower includes a motor, a plurality of fans coaxially arranged in multiple stages, a housing having an inlet opening and a discharge opening, and a battery mounting part to which a battery is removably mountable. A rotational speed of the motor is within a range of 50,000 rpm to 120,000 rpm. A diameter of each of the fans is within a range of 30 mm to 70 mm. An area of the discharge opening is within a range of not less than an area of a circle having a diameter of 2.5 mm and not more than an area of a circle having a diameter of 10 mm. A blowing force of air discharged through the discharge opening is within a range of 1 N to 3 N.

Abstract: A hammer drill includes a housing inside which a motor, a tubular tool holder, a driving mechanism, a rotation conversion member, and an inner housing are disposed. The driving mechanism is configured to perform at least one of rotation actuation of the tool holder and hammering actuation of a bit. The inner housing supports the driving mechanism, supports the tool holder via a first bearing, and supports an output shaft via a second bearing. The inner housing is divided into a front housing holding the first bearing and a rear housing that is formed in a separate body from the front housing and holds the second bearing. The inner housing is formed by connecting the front housing to the rear housing in an axis line direction of the tool holder. A seal member sealing outside space of the inner housing inside the housing is disposed in the front housing.

Abstract: A battery pack may be configured to be attached to and detached from an electric device including a plurality of device-side terminals. The battery pack may include: an outer case; a battery cell; a circuit board; and a plurality of battery-side terminals. A first terminal of the plurality of battery-side terminals may include a clamp portion and a non-clamp portion. The clamp portion may be configured to receive a device-side terminal of the plurality of device-side terminals and clamp the device-side terminal from both sides. An inner surface of the clamp portion may be plated with a first metal. A part of a surface of the non-clamp portion may not be plated with the first metal. The first metal may be a pure metal that is a noble metal or a noble metal alloy.

Abstract: An intended illumination area is illuminated with light. An electric work machine includes a motor including a rotor rotatable about a rotation axis extending in a front-rear direction, an output unit located frontward from the motor and operable under a rotational force from the rotor, a light emitter, and an optical member including at least one light receiver that receives light from the light emitter and a light guide surrounding at least a part of the output unit to allow light from the at least one light receiver to travel through the light guide. The light guide has a rear surface having at least one slit, and a front surface to allow emission of light traveling through the light guide and reflected at the at least one slit.

Abstract: A battery pack in one aspect of the present disclosure includes a battery and a controller provided with a counter value. During discharge of the battery pack, the controller calculates an addition value in accordance with a total number of use of the battery pack under a specified condition. The controller updates the counter value by adding the addition value. The controller prohibits the discharge of the battery pack in response to the counter value reaching a protection threshold.