A power tool including a housing, a brushless direct current (DC) motor, an impact mechanism including a hammer and an anvil, an output drive device, a position sensor, and a controller. The position sensor is adjacent to a relief feature, which may be a recessed relief feature or a raised relief feature, and is configured to generate an output signal indicative of a position of the anvil. The controller is configured to calculate a drive angle based on the determined position of the anvil, and control the brushless DC motor based on the drive angle of the anvil.

A rotary power tool includes a main housing and a transmission housing coupled to the main housing. The transmission housing includes a bearing pocket open to a front of the transmission housing and defined at least partially by a radially inward-extending flange. The rotary power tool also includes an output shaft and a bearing positioned within the bearing pocket adjacent and in abutting relationship with the radially inward-extending flange for rotatably supporting the output shaft in the transmission housing. The rotary power tool also includes a radially outward-extending flange on the output shaft that radially overlaps at least a portion of the bearing on an opposite side of the bearing as the radially inward-extending flange. A line of action of an axial reaction force applied to the output shaft is directed to the transmission housing via the radially outwardly-extending flange, the bearing, and the radially inward-extending flange.

An impact tool is provided which includes a drive source configured to rotate an output drive. A hammer is movable in a first direction to apply a rotational impact force on an anvil which rotates the output drive. A first hammer angle sensor set to a first signal channel and located proximate to a surface of the hammer. A plurality of regularly spaced targets are located on the surface of the hammer. Each of the plurality of regularly spaced targets are detectable by the first hammer sensor. And detection of one or more of the plurality of regularly spaced targets by the first hammer sensor indicates movement of the hammer.

An impact wrench for tightening and loosening nuts and screws on a track has a vibration decoupling device which serves for vibration decoupling of at least one handle from an electrically operated impact screwing mechanism.

A power tool reduces performance deterioration. The power tool includes a motor, an output unit, a motor compartment, and a grip. The motor includes a rotor bearing and a rotor rotatable about a rotation axis extending in a front-rear direction. The rotor includes a rotor magnet, a core to which the rotor magnet is fixed, and a shaft protruding from an end face of the core and supported by the rotor bearing. The shaft and the core together are a single member. The output unit is at least partially located frontward from the motor and rotatable by the rotor. The motor compartment accommodates at least a part of the motor. The grip protrudes downward from the motor compartment.

A power tool includes a housing, a brushless motor received in the housing, a power switch coupled to the housing and actuatable by a user, a controller configured to control power delivery to the motor in response to actuation of the power switch, and an output spindle configured to rotate when the motor is energized. The controller is configured to maintain an amount of current delivered to the motor to be less than or equal to a current limit by turning off or reducing power to the motor for a time period if the current exceeds the current limit and then restarting power delivery to the motor. The time period is greater than the duration of one full current cycle.

Method for detecting a first operating state of a handheld power tool, wherein the handheld power tool has an electric motor. In this case, the method comprises the steps of: (S1) determining a signal of an operating variable of the electric motor; (S2) comparing the signal of the operating variable with at least one model signal waveform typical of the state, wherein the model signal waveform typical of the state is assigned to the first operating state; (S3) deciding whether the first operating state is present, wherein the decision at least partially depends on whether the model signal waveform typical of the state is identified in the signal of the operating variable in step S2. Additionally disclosed is a handheld power tool, particularly an impact driver, with an electric motor and a control unit, wherein the control unit is designed to execute a method according to the disclosure.

An impact mechanism for a rotary impact tool including a centering component, a gear carrier adapted to receive rotational force from the motor and including a gear carrier aperture adapted to receive the centering component, an anvil rotatable about the central axis and including an impact section and an anvil aperture adapted to receive the centering component, and a hammer slidably coupled to the gear carrier, rotatable about a central axis, and defining a planar surface, the hammer including a lug extending from the planar surface. The centering component functions as a pilot between the gear carrier and anvil. The centering component can include an axial bore. Axial clearance and a slip-fit can be provided between the gear carrier and the centering component and between the anvil and the dowel to allow the hollow dowel to move axially.

An apparatus and method for latching a hammer of an impact tool, the hammer being displaceable along a cam shaft between a latched or retracted position and an impact position at which the hammer impacts an anvil. The apparatus can include one or more latching bodies, a portion of the one or more latching bodies being positioned within the hammer groove when the hammer is at the latched position, and removed from the hammer groove when the hammer is to be released from the latched position. The apparatus can also include an actuator sleeve that is configured to retain at least the portion of the one or more latching bodies within the hammer groove when the actuator sleeve is at the first position, and accommodate removal of the portion of the latching bodies from the hammer groove when the actuator sleeve is at a second position.

Illustrative embodiments of impact tools with impact mechanisms rigidly coupled to electric motors are disclosed. In at least one illustrative embodiment, an impact tool may comprise an impact mechanism, an electric motor, and a control circuit. The impact mechanism may comprise a hammer and an anvil, the hammer being configured to rotate about a first axis and to periodically impact the anvil to drive rotation of the anvil about the first axis. The electric motor may comprise a rotor that is rigidly coupled to the impact mechanism, the electric motor being configured to drive rotation of the hammer about the first axis, The control circuit may be configured to supply a current to the electric motor and to prevent the current from exceeding a threshold in response to the hammer impacting the anvil.