Abstract: An electricity storage device includes a stack of bipolar electrodes each including a steel sheet, and a plating layer provided on a surface of the steel sheet. The plating layer includes a base nickel-plating layer provided on the surface of the steel sheet, and a surface nickel-plating layer provided on the base nickel-plating layer, and having a surface roughness greater than that of the base nickel-plating layer.

Abstract: An electrical device body connectable to a battery pack, includes a drive part, and a terminal part. The terminal part having a positive input terminal electrically connected to the drive part, a negative input terminal electrically connected to the drive part, and a short circuit element having a first terminal part, a second terminal part, and a connection part connecting the first terminal part and the second terminal part, wherein the positive input terminal and the negative input terminal are disposed on an upper side of the terminal part and the short circuit element is disposed on a lower side of the terminal part in an upper-lower direction, the positive input terminal and the negative input terminal being apart from each other in a left-right direction crossing the upper-lower direction.

Abstract: A sensory control method includes a step of receiving, a step of converting, and a step of outputting. In the step of receiving, a sensitivity parameter is received. In the step of converting, the received sensitivity parameter is converted into, among a plurality of physical parameters included in physical properties relating to a sensory presentation, a physical parameter correlated with the sensitivity parameter. In the step of outputting, a sensory presentation signal based on the physical parameter obtained as a result of the conversion is output.

Abstract: The electrical apparatus, in which a series connection state and a parallel connection state of an upper cell unit including five battery cells and a lower cell unit can be automatically switched by means of a difference in a terminal shape on the electrical apparatus body side, has a terminal holder and holds apparatus side terminals. The terminal holder, which establishes an electrically connected state with the connection terminals of the battery pack, is provided with two parallel protruding parts that extend in the forward-backward direction, and second rail grooves fitted to the protruding parts on the electrical apparatus side. Due to the fitting, relative movement of the terminal holder and the battery pack in the vertical direction can be suppressed, and wear on the apparatus side terminals can be greatly suppressed.

Abstract: A battery pack houses first and second cell units that are composed of a plurality of cells, and has a positive electrode power source terminal and a negative electrode power source terminal. This battery pack is provided with a series connector capable of connecting, in series, the first and second cell units and a parallel connector capable of connecting, in parallel, the first and second cell units, and is capable of switching between a parallel connection voltage and a series connection voltage. In the case of attachment to the high voltage electrical device body, the series connector becomes conductive and the parallel connector pair is cut off by the action of the series/parallel switching terminal. In the case of attachment to a low voltage electrical device body, the state is returned to an initial state, the series connector is cut off, and the parallel connector pair becomes conductive.

Abstract: The present invention improves the convenience of a work machine. A two-dimensional code 15a and a serial number 15b are marked on a name plate 15. The two-dimensional code 15a is a two-dimensional code indicating unique information such as the serial number of a work machine 1. A communication adapter 30 is connected to a battery pack mounting portion 2c of the work machine 1. The communication adapter 30 has a function of supplying power to the work machine 1 and a function of communicating with the work machine 1 and a PLC 60. A camera 67 reads the two-dimensional code 15a of the work machine 1, and transmits the serial number of the work machine 1 to the PLC 60. The PLC 60 transmits the serial number to the communication adapter 30. The work machine 1 stores the received serial number in its own internal memory.

Abstract: An impact tool includes a hammer that is rotated by a motor and energized toward a front side from a spindle by a cam mechanism and a spring, and an anvil that is struck by the hammer. The hammer includes a main body part, and claw parts extending forward from the main body part, and tapered surfaces are formed such that an inner diameter side end of each of the claw parts of the main body part is located on the front side relative to an outer diameter side end of the claw part. The tapered surfaces are formed, on an outer peripheral side of a front facing surface of the hammer, in such a shape that the tapered surfaces recede as separating in a radial direction from a rotation axis.

Abstract: In a working device, a cover added outside an enclosure portion is used to utilize vibration of the working device during an operation thereof to cool the enclosure portion. The working device has: a motor; a speed reduction mechanism for decelerating rotation of the motor; a striking mechanism; an enclosure portion (main body housing, hammer case 5) accommodating them; and a cover covering at least a portion of an outer surface of the enclosure portion. An airflow passage is formed between an outer surface of the hammer case and the cover and is configured so as to allow inflow and outflow of outside air. The cover is held so as to be slightly movable by sandwiching an elastic member in an axial line direction and, by the cover being moving forward and backward during its operation, air goes into or comes out of the airflow passage to cool the hammer case.

Abstract: Provided is a rotary tool with a compact tip tool holding portion (80). The rotary tool is provided with a sleeve (81) attached to an output shaft (41) to switch a tip tool (70) between a fixed state and a detachable state. The output shaft (41) has a through hole (46) formed therein radially penetrating from the inside to the outside of a mounting hole thereof. The through hole (46) has a steel ball (85) provided therein such that at least a part of the steel ball (85) overlaps at least a part of a case (10). The sleeve (81) defines a first position in the outward direction of the steel ball (85), while the case (10) regulates a second position on the radially outer side of the first position.

Abstract: In an upper cell unit (2146) and a lower cell unit (2147) comprising five battery cells, positive electrode terminals (2162, 2172) are set apart and aligned vertically, and negative electrode terminals (2167, 2177) are set apart and aligned vertically. When an electrical device body is rated at 36V, device-side terminals are in contact only at the upper terminals (2162, 2167), and short circuiting of the lower terminals (2172, 2177) is effected using a short bar 2059. When the electrical device body is rated at 18V, the upper and lower terminals (2162 and 2172, 2167 and 2177) are simultaneously made to contact the device-side terminals, and the upper cell unit (2146) and the lower cell unit (2147) assume a parallel connected state. Thus, it is possible to automatically switch the output voltage when a battery pack is mounted according to the difference in terminal shape on the electrical device body side.

Abstract: In order to provide an impact work machine capable of preventing oil leakage and cooling a power transmission apparatus, an impact work machine transmitting power of an electric motor 16 including an output shaft extending in an axis A1 direction to an anvil includes: a housing including a motor case accommodating the electric motor, and a grip extending from the motor case; a speed reducer and an impact mechanism 96 each transmitting power of the electric motor to the anvil; a hammer case located forward of the motor case and nonrotatable relative to the motor case; an extension portion provided on the housing and extending from the motor case toward the hammer case so as to cover at least part of the hammer case; and a passage provided between the hammer case and the extension portion and through which air passes.

Abstract: An electric device capable of suppressing the short circuit between adjacent terminals is provided. The electric device includes a battery pack in which a plurality of battery-side terminals are provided and a device body in which device-side terminals are provided and to which the battery pack is detachably attached. One of the battery-side terminals and the device-side terminals are plate terminals protruding from a terminal holder, and the other of the battery-side terminals and the device-side terminals are connection terminals which protrude into slots in which the plate terminals are inserted and come into contact with the plate terminals. An insulating portion extending from the terminal holder toward a tip of the plate terminal and inserted into the slot is provided to at least one of the plate terminals.

Abstract: The electrical apparatus, in which a series connection state and a parallel connection state of an upper cell unit including five battery cells and a lower cell unit can be automatically switched by means of a difference in a terminal shape on the electrical apparatus body side, has a terminal holder and holds apparatus side terminals. The terminal holder, which establishes an electrically connected state with the connection terminals of the battery pack, is provided with two parallel protruding parts that extend in the forward-backward direction, and second rail grooves fitted to the protruding parts on the electrical apparatus side. Due to the fitting, relative movement of the terminal holder and the battery pack in the vertical direction can be suppressed, and wear on the apparatus side terminals can be greatly suppressed.

Abstract: In order to provide an impact tool which is capable of increasing a striking force in a rotational direction of being applied from a hammer to an anvil, the impact tool includes: an electric motor; an anvil which supports a work tool and is driven by the electric motor; and a hammer which applies the striking force in the rotational direction to the anvil. The impact tool is provided with: a spindle which is arranged to be concentric with the anvil, supports the hammer to be movable in an axial direction and the rotational direction with respect to the anvil, and transmits motive power of the electric motor to the anvil; and a control unit which controls rotation speed of the electric motor. The number of strokes of the anvil due to one rotation of the hammer differs in response to rotation speed of the electric motor.

Abstract: A battery pack houses first and second cell units that are composed of a plurality of cells, and has a positive electrode power source terminal and a negative electrode power source terminal. This battery pack is provided with a series connector capable of connecting, in series, the first and second cell units and a parallel connector capable of connecting, in parallel, the first and second cell units, and is capable of switching between a parallel connection voltage and a series connection voltage. In the case of attachment to the high voltage electrical device body, the series connector becomes conductive and the parallel connector pair is cut off by the action of the series/parallel switching terminal. In the case of attachment to a low voltage electrical device body, the state is returned to an initial state, the series connector is cut off, and the parallel connector pair becomes conductive.

Abstract: In an upper cell unit (2146) and a lower cell unit (2147) comprising five battery cells, positive electrode terminals (2162, 2172) are set apart and aligned vertically, and negative electrode terminals (2167, 2177) are set apart and aligned vertically. When an electrical device body is rated at 36V, device-side terminals are in contact only at the upper terminals (2162, 2167), and short circuiting of the lower terminals (2172, 2177) is effected using a short bar 2059. When the electrical device body is rated at 18V, the upper and lower terminals (2162 and 2172, 2167 and 2177) are simultaneously made to contact the device-side terminals, and the upper cell unit (2146) and the lower cell unit (2147) assume a parallel connected state. Thus, it is possible to automatically switch the output voltage when a battery pack is mounted according to the difference in terminal shape on the electrical device body side.

Abstract: In order to provide an impact tool which is capable of increasing a striking force in a rotational direction of being applied from a hammer to an anvil, the impact tool includes: an electric motor; an anvil which supports a work tool and is driven by the electric motor; and a hammer which applies the striking force in the rotational direction to the anvil. The impact tool is provided with: a spindle which is arranged to be concentric with the anvil, supports the hammer to be movable in an axial direction and the rotational direction with respect to the anvil, and transmits motive power of the electric motor to the anvil; and a control unit which controls rotation speed of the electric motor. The number of strokes of the anvil due to one rotation of the hammer differs in response to rotation speed of the electric motor.

Abstract: In order to provide an impact work machine capable of preventing oil leakage and cooling a power transmission apparatus, an impact work machine transmitting power of an electric motor 16 including an output shaft extending in an axis A1 direction to an anvil includes: a housing including a motor case accommodating the electric motor, and a grip extending from the motor case; a speed reducer and an impact mechanism 96 each transmitting power of the electric motor to the anvil; a hammer case located forward of the motor case and nonrotatable relative to the motor case; an extension portion provided on the housing and extending from the motor case toward the hammer case so as to cover at least part of the hammer case; and a passage provided between the hammer case and the extension portion and through which air passes.

Abstract: When a battery pack is mounted to a battery attachment part, the battery pack is slid in a horizontal direction (a direction substantially perpendicular to an upper-lower direction) with respect to the housing, e.g., along a long longitudinal direction of a battery-side rail part, such that tool-side rail parts of the battery attachment part are introduced into engaging recess portions of the battery pack. Thereby, the elastic members are fitted and compressed in the battery-side rail parts and the tool-side rail parts, so that the elastic members press upwards the battery-side rail part (e.g., the battery pack) and press downwards the tool-side rail parts (e.g., the housing). That is, the elastic members press the battery pack and the housing such that they come close to each other.