A power tool includes a motor configured to provide driving force to a tool accessory, a braking mechanism disposed on a driving-force-transmission path from the motor to the tool accessory and configured to put a brake on driving of the tool accessory, at least one attachment portion configured such that an accessory is removably attachable thereto, and a restricting member configured to be directly or indirectly pressed and displaced by the accessory when the accessory is attached to any one of the at least one attachment portion. In a state in which the accessory is not attached to any of the at least one attachment portion, the restricting member is located at a preventive position at which between-members abutment prohibits releasing of a braked state effected by the braking mechanism.

An angle grinder is disclosed and includes a housing, a motor within the housing, a gearcase extending from the housing, wherein the gearcase includes a spindle and the spindle is driven by the motor, a rotating tool removable engaged with the spindle, a flange removably engaged with the spindle to secure the rotating tool on the spindle, and a flange retainer disposed on the grinder, wherein the flange retainer is configured to receive and retain the flange when the flange is disengaged from the spindle.

A stator for a brushless DC (BLDC) motor includes a stator core having stator teeth extending radially inwardly towards a center bore, stator windings respectively wound around the stator teeth, and insulating inserts having substantially the same longitudinal length as the stator core. The insulating inserts are longitudinally received between adjacent stator windings at or near inner tips of the adjacent stator teeth to substantially seal the center bore of the stator assembly from the stator windings.

A grinder including a motor, a switch operated ON and OFF in accordance with an operation of a switch lever to control a rotation of an output shaft of the motor, a spindle that rotates in accordance with the rotation of the output shaft to rotate a disk-shaped grinding wheel and a brake mechanism controllable with respect to a brake plate that integrally rotates with the output shaft, in a housing, the brake plate includes fins.

A tool includes a first accessory, a second accessory, a first attachment portion configured to allow the first accessory to be detachably attached thereto, a second attachment portion configured to allow the second accessory to be detachably attached thereto, a first intermediate member configured to be displaced from a first non-attachment position to a first attachment position by the attachment of the first accessory to the first attachment portion, a second intermediate member configured to be displaced from a second non-attachment position to a second attachment position by the attachment of the second accessory to the second attachment portion, and a single sensor configured to detect a specific state in which the first intermediate member is located at the first attachment position and the second intermediate member is located at the second attachment position.

A handheld power tool includes an output shaft, a drive unit, a securing ring, and a securing element. The output shaft is configured to be releasably connected to an insert tool of the handheld power tool. The drive unit is configured to transmit a movement to the output shaft. The securing element is configured to secure the securing ring. The securing element has a recess which is provided to surround the securing ring in the radial direction in at least one operating state.

An electric tool includes a body, a battery pack, and a guide portion including a primary guide unit and a secondary guide unit. The primary guide unit and the secondary guide unit each extend in a preset direction and the primary guide unit and the secondary guide unit each are arranged in the longitudinal direction between a connecting portion of the battery pack and a mounting portion of the body. The primary guide unit and the secondary guide unit implement rigid mating. The primary guide unit includes primary mating surfaces mating with each other in the transverse direction, the secondary guide unit includes secondary mating surfaces mating with each other in the transverse direction, and a ratio of a width of a transverse gap between the primary mating surfaces to a width of a transverse gap between the secondary mating surfaces is greater than or equal to 0.3.

A power tool is provided including a housing; an electric motor disposed within the housing; a power terminal arranged to received electric power form a battery pack; a power switch circuit disposed between the power terminal and the electric motor; and a controller configured to control a switching operation of the power switch circuit to regulate power being supplied from the power terminal to the electric motor. The controller is configured to receive a temperature signal indicative of a temperature of the battery pack, determine if the temperature of the battery pack is below a lower temperature threshold, and operate the switching operation of the power switch circuit in a normal mode of operation if the temperature of the battery pack is greater than or equal to the low temperature threshold and in a cold mode of operation if the temperature of the battery pack is below the low temperature threshold.

A sanding wheel that may be used, e.g., to finish a wood deck, includes one or more risers. Each riser includes an angled face and a cross member, and the angled face and cross member define a slot therebetween. The retaining or fastening clip includes a retaining spring, and the fastening clip is received on the angled face of the riser with the retaining spring extending into the slot. The blade has an abrasive on a first end and an aperture at a second end, the aperture being defined by a shoulder about the aperture. The second end of the blade extends into the slot with the retaining spring of the fastening clip engaging the shoulder. The slot and the retaining spring are configured to mechanically lock the blade to the riser and the base.

The electric tool including a motor having a stator and a rotor, a rotation shaft integrally rotating with the rotor, a casing accommodating the motor, a ventilating window disposed in the casing, a cooling fan sucking an air through the ventilating window to cool off the motor, a magnetic body disposed to the rotation shaft, a magnetic detection unit detecting a rotational position of the magnetic body, and a circuit substrate on which the magnetic detection unit is mounted. The circuit substrate and the magnetic body are disposed to be isolated from a wind path of a cooling wind generated by rotation of the cooling fan.