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: 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 electrical device comprises a common device main body having selectively and detachably attached thereto either a variable-voltage power supply device or a high-voltage power supply device. The device main body has: a protruding section that abuts a power supply-side main erroneous attachment prevention section provided in the variable-voltage power supply device and the high-voltage power supply device; a device-side main erroneous attachment prevention section that abuts the power supply-side main erroneous attachment prevention section provided in a low-voltage power supply device and prevents the low-voltage power supply device from abutting an attachment positioning section; and a device-side attachment permitting section that can be combined in a power supply-side auxiliary erroneous attachment prevention section provided in the high-voltage power supply device.

Abstract: Provided is a work machine with improved operatability. In a cutting tool, a guard member that is made of metal is provided inside a chip discharge passage section, and a bottom wall of the chip discharge passage section on a saw blade side is covered by the guard member. In other words, a bottom surface of the chip discharge passage section is guarded by the guard member that is made of metal. Accordingly, the guard member can prevent high-temperature metal chips from coming into direct contact with the bottom wall of the chip discharge passage section. Thus, deformation of the chip discharge passage section when chips pass through the chip discharge passage section can be suppressed. Consequently, the durability of a saw cover can be increased, and the operatability of the cutting tool can be improved.

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: 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 device comprises a common device main body having selectively and detachably attached thereto either a variable-voltage power supply device or a high-voltage power supply device. The device main body has: a protruding section that abuts a power supply-side main erroneous attachment prevention section provided in the variable-voltage power supply device and the high-voltage power supply device; a device-side main erroneous attachment prevention section that abuts the power supply-side main erroneous attachment prevention section provided in a low-voltage power supply device and prevents the low-voltage power supply device from abutting an attachment positioning section; and a device-side attachment pet' lifting section that can be combined in a power supply-side auxiliary erroneous attachment prevention section provided in the high-voltage power supply device.

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 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: 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 connection terminal and the power supply terminal are held by a common holding member made of a resin. The power supply terminal includes a press-fitting portion press-fitted into a press-fitted portion of the holding member. The press-fitted portion of the holding member has a shape that is long in a plate width direction of the power supply terminal and short in a plate thickness direction of the power supply terminal. Assuming that a dimension of each of both end portions of the press-fitted portion in the plate width direction of the power supply terminal is defined as L1, a dimension of a center portion of the press-fitted portion is defined as L2, and a plate thickness of the power supply terminal is defined as T, L2<T<L1 is satisfied under a non-press-fitted state.

Abstract: The connection terminal and the power supply terminal are held by a common holding member made of a resin. The power supply terminal includes a press-fitting portion press-fitted into a press-fitted portion of the holding member. The press-fitted portion of the holding member has a shape that is long in a plate width direction of the power supply terminal and short in a plate thickness direction of the power supply terminal. Assuming that a dimension of each of both end portions of the press-fitted portion in the plate width direction of the power supply terminal is defined as L1, a dimension of a center portion of the press-fitted portion is defined as L2, and a plate thickness of the power supply terminal is defined as T, L2<T<L1 is satisfied under a non-press-fitted state.