Abstract: A driver drill may include: a motor; an output part provided forward of the motor and driven by the motor; a speed reduction mechanism disposed between the motor and the output part; a motor bracket disposed between the motor and the speed reduction mechanism; a housing that houses the motor and the motor bracket; an element provided above the motor or the speed reduction mechanism; and a lead wire connected to the element and extending more downward than the motor or the speed reduction mechanism. The lead wire may be sandwiched between the housing and the motor bracket.

Abstract: A driver-drill (1) includes a motor (6) having a stator (61) and a rotor (62); an output part (8) including: a spindle (81), which is disposed more forward than the motor and, in response to application of a rotational force transmitted from the rotor, is rotated around a rotational axis (AX) extending in the front-rear direction; and a chuck (82), which is mounted on the spindle; and a speed-reducing mechanism (30), which is configured to rotate the output part at a rotational speed that is lower than the rotational speed of the rotor but at a higher torque. The maximum fastening torque of the output part is 160 N·m or more.

Abstract: An electric work machine includes: a motor; a first planetary gear mechanism; a second planetary gear mechanism; a spindle; a first speed switch mechanism including a first internal gear of a first stage unit and a second internal gear of a second stage unit; and a second speed switch mechanism. The first speed switch mechanism performs switching between a first speed reducing mode in which rotation of the second internal gear is prevented and rotation of the first internal gear is allowed and a second speed reducing mode in which rotation of the first internal gear is prevented and rotation of the second internal gear is allowed. The second speed switch mechanism performs switching between an enabled mode in which rotation of an internal gear of the second planetary gear mechanism is prevented and a disabled mode in which the rotation of the internal gear is allowed.

Abstract: An electric work machine reduces noise from the electric work machine. An electric work machine includes a motor including a stator including a stator core and coils, and a rotor including a rotor core and a rotor shaft, an output unit located frontward from the motor and rotatable with a rotational force from the motor, a first support having a first contact surface in contact with a front end face of the stator core, a second support having a second contact surface in contact with a rear end face of the stator core, and a screw connecting the first support and the second support and fastening the stator core to the first support and the second support in a front-rear direction.

Abstract: An electric work machine includes: a motor; a first planetary gear mechanism; a second planetary gear mechanism; a spindle; a first speed switch mechanism including a first internal gear of a first stage unit and a second internal gear of a second stage unit; and a second speed switch mechanism. The first speed switch mechanism performs switching between a first speed reducing mode in which rotation of the second internal gear is prevented and rotation of the first internal gear is allowed and a second speed reducing mode in which rotation of the first internal gear is prevented and rotation of the second internal gear is allowed. The second speed switch mechanism performs switching between an enabled mode in which rotation of an internal gear of the second planetary gear mechanism is prevented and a disabled mode in which the rotation of the internal gear is allowed.

Abstract: A fastening tool includes a motor, a fastening mechanism, a tool body and a main handle. The motor includes a motor body and a motor shaft. The fastening mechanism is configured to fasten workpieces via a fastener by pulling a pin of the fastener rearward relative to a tubular part of the fastener along a driving axis defining a front-rear direction of the fastening tool. The tool body houses the motor and the fastening mechanism. The main handle extends in a direction crossing the driving axis and connected to the tool body such that the main handle and the tool body together form an annular part. A rotational axis of the motor shaft extends parallel to the driving axis. A portion of the main handle is located in a rear space extending behind the motor body.

Abstract: A fastening tool includes a housing, a handle, an anvil, a pin-gripping part, a motor, and a driving mechanism. The driving mechanism is configured to move the pin-gripping part along a first axis defining a front-rear direction, relative to the anvil. The driving mechanism includes a rotary member, a movable member, a driving gear and an idler gear. The rotary member has a driven gear formed on its outer periphery and is rotatable around the first axis. The movable member is connected to the pin-gripping part and configured to be linearly moved in the front-rear direction by rotation of the rotary member. The driving gear is configured to be rotated around a second axis extending in parallel to the first axis below the first axis. The idler gear is engaged with the driving gear and the driven gear.

Abstract: A fastening tool includes a housing, a handle, an anvil, a pin-gripping part, a motor, and a driving mechanism. The driving mechanism is configured to move the pin-gripping part along a first axis defining a front-rear direction, relative to the anvil. The driving mechanism includes a rotary member, a movable member, a driving gear and an idler gear. The rotary member has a driven gear formed on its outer periphery and is rotatable around the first axis. The movable member is connected to the pin-gripping part and configured to be linearly moved in the front-rear direction by rotation of the rotary member. The driving gear is configured to be rotated around a second axis extending in parallel to the first axis below the first axis. The idler gear is engaged with the driving gear and the driven gear.

Abstract: A fastening tool includes a motor, a fastening mechanism, a tool body and a main handle. The motor includes a motor body and a motor shaft. The fastening mechanism is configured to fasten workpieces via a fastener by pulling a pin of the fastener rearward relative to a tubular part of the fastener along a driving axis defining a front-rear direction of the fastening tool. The tool body houses the motor and the fastening mechanism. The main handle extends in a direction crossing the driving axis and connected to the tool body such that the main handle and the tool body together form an annular part. A rotational axis of the motor shaft extends parallel to the driving axis. A portion of the main handle is located in a rear space extending behind the motor body.

Abstract: A fastening tool includes a bolt-gripping part, an anvil, a bolt-gripping-part driving mechanism, a motor, a housing, and thrust rolling bearings. The bolt-gripping-part driving mechanism includes a first mechanism part supported by the housing and a second mechanism part connected to the bolt-gripping part. The second mechanism part is configured to be driven in a longitudinal-axis direction by the first mechanism part being rotationally driven, so that the bolt-gripping part is moved in the longitudinal-axis direction relative to the anvil. The thrust rolling bearings are disposed on a first direction side and a second direction side of the first mechanism part, respectively.

Abstract: A fastening tool includes a housing, a fastener-abutment part, a pin-gripping part, a motor, a driving mechanism and a handle. The housing extends in a front-rear direction along a driving axis. The driving mechanism is configured to move the pin-gripping part rearward along the driving axis relative to the fastener-abutment part. The driving mechanism includes a rotary member and a movable member configured to linearly move in the front-rear direction when the rotary member is rotationally driven. The handle protrudes downward from the housing and has a trigger. A rotation axis of a motor shaft extends in parallel to the driving axis on a lower side of the driving axis. A virtual plane including the driving axis and the rotation axis passes a center of the handle in a left-right direction. The trigger is disposed between the rotary member and a motor body in the front-rear direction.

Abstract: A fastening tool configured to fasten a workpiece via a multi-piece swage type fastener including a pin and a collar includes an anvil, a pin-gripping part, a driving mechanism, an electric motor, a control part and a housing. The driving mechanism is configured to move the pin-gripping part relative to the anvil in a first direction along an axis so as to cause the anvil to press the collar engaged with a shaft part of the pin in a second direction and in a radially inward direction. An operation mode of the driving mechanism can be selectively switched between a plurality of operation modes including a first mode, in which a process of fastening the workpiece is completed based on a state of the fastener, and a second mode, in which the process of fastening the workpiece is completed based on a driving state of the motor.

Abstract: A fastening tool includes a housing, a handle, an anvil, a pin-gripping part, a motor, and a driving mechanism. The driving mechanism is configured to move the pin-gripping part along a first axis defining a front-rear direction, relative to the anvil. The driving mechanism includes a rotary member, a movable member, a driving gear and an idler gear. The rotary member has a driven gear formed on its outer periphery and is rotatable around the first axis. The movable member is connected to the pin-gripping part and configured to be linearly moved in the front-rear direction by rotation of the rotary member. The driving gear is configured to be rotated around a second axis extending in parallel to the first axis below the first axis. The idler gear is engaged with the driving gear and the driven gear.

Abstract: A fastening tool includes a housing, a fastener-abutment part, a pin-gripping part, a motor, a driving mechanism and a handle. The housing extends in a front-rear direction along a driving axis. The driving mechanism is configured to move the pin-gripping part rearward along the driving axis relative to the fastener-abutment part. The driving mechanism includes a rotary member and a movable member configured to linearly move in the front-rear direction when the rotary member is rotationally driven. The handle protrudes downward from the housing and has a trigger. A rotation axis of a motor shaft extends in parallel to the driving axis on a lower side of the driving axis. A virtual plane including the driving axis and the rotation axis passes a center of the handle in a left-right direction. The trigger is disposed between the rotary member and a motor body in the front-rear direction.

Abstract: An electric working machine according to one aspect of the present disclosure includes an output shaft, a motor, a transmitting device, a drive device, a controller, and a current path. The transmitting device has transmittable allowable torque and transmits rotation of the motor to the output shaft. The drive device energizes the motor with electric supply from a battery in accordance with a command from outside the electric working machine. The current path is configured to be able to energize the motor with a current value larger than an allowable current value required to limit torque generated in the transmitting device due to rotation of the motor to the allowable torque or smaller.

Abstract: A fastening tool configured to fasten a workpiece via a multi-piece swage type fastener including a pin and a collar includes an anvil, a pin-gripping part, a driving mechanism, an electric motor, a control part and a housing. The driving mechanism is configured to move the pin-gripping part relative to the anvil in a first direction along an axis so as to cause the anvil to press the collar engaged with a shaft part of the pin in a second direction and in a radially inward direction. An operation mode of the driving mechanism can be selectively switched between a plurality of operation modes including a first mode, in which a process of fastening the workpiece is completed based on a state of the fastener, and a second mode, in which the process of fastening the workpiece is completed based on a driving state of the motor.

Abstract: A fastening tool includes a bolt-gripping part, an anvil, a bolt-gripping-part driving mechanism, a motor, a housing, and thrust rolling bearings. The bolt-gripping-part driving mechanism includes a first mechanism part supported by the housing and a second mechanism part connected to the bolt-gripping part. The second mechanism part is configured to be driven in a longitudinal-axis direction by the first mechanism part being rotationally driven, so that the bolt-gripping part is moved in the longitudinal-axis direction relative to the anvil. The thrust rolling bearings are disposed on a first direction side and a second direction side of the first mechanism part, respectively.

Abstract: An electric working machine according to one aspect of the present disclosure includes an output shaft, a motor, a transmitting device, a drive device, a controller, and a current path. The transmitting device has transmittable allowable torque and transmits rotation of the motor to the output shaft. The drive device energizes the motor with electric supply from a battery in accordance with a command from outside the electric working machine. The current path is configured to be able to energize the motor with a current value larger than an allowable current value required to limit torque generated in the transmitting device due to rotation of the motor to the allowable toque or smaller.

Abstract: A power tool, such as an impact driver, includes a motor housing that houses a motor, and a battery-mount part to which a battery pack having a rated voltage of 18 V is mountable. A ratio of the maximum width of the motor housing to the maximum width of the battery pack is 0.75 or less. A forward/reverse-switching lever is slidable in a left-right direction to change the rotational direction of the motor and is disposed between the motor housing and the battery pack. A maximum-slide position of the forward/reverse-switching lever in the left-right direction is inward of a ground plane when the power tool is laid horizontally on its side on the ground plane.