A power tool includes a housing, an electric motor, a spindle, a retainer, a reciprocation drive assembly, a striker, and an anvil. The retainer is at least partially received into the spindle. The anvil includes a front anvil impact surface and a rear anvil surface opposite the front anvil impact surface. The retainer defines a retainer impact surface that contacts the front anvil impact surface in response to the anvil moving in a first direction along a reciprocation axis. The spindle defines a spindle impact surface that contacts the rear anvil impact surface in response to the anvil moving in a second direction opposite the first direction along the reciprocation axis. The retainer impact surface and the spindle impact surface limit a travel distance by which the anvil translates along the reciprocation axis.

A power tool includes a housing, an electric motor, a spindle, a retainer, a reciprocation drive assembly, a striker, and an anvil. The retainer is at least partially received into the spindle. The anvil includes a front anvil impact surface and a rear anvil surface opposite the front anvil impact surface. The retainer defines a retainer impact surface that contacts the front anvil impact surface in response to the anvil moving in a first direction along a reciprocation axis. The spindle defines a spindle impact surface that contacts the rear anvil impact surface in response to the anvil moving in a second direction opposite the first direction along the reciprocation axis. The retainer impact surface and the spindle impact surface limit a travel distance by which the anvil translates along the reciprocation axis.

An electropneumatic impact mechanism for an electric hand-held power tool, in particular a hammer drill and/or chipping hammer, wherein the impact mechanism has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is designed as an externally toothed gearwheel and is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing about an axis of rotation on the other side, an axial gap, preferably for optionally receiving at least part of a lubrication space separating element, is provided between an eccentric wheel surface facing the connecting rod and a connecting rod surface facing the eccentric wheel.

An electropneumatic impact mechanism for an electric hand-held power tool, in particular a hammer drill and/or chipping hammer, wherein the impact mechanism has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is designed as an externally toothed gearwheel and is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing about an axis of rotation on the other side, an axial gap, preferably for optionally receiving at least part of a lubrication space separating element, is provided between an eccentric wheel surface facing the connecting rod and a connecting rod surface facing the eccentric wheel.

A power tool includes a motor, a spindle defining a first end with a slot, and a crankshaft including a counterweight and a crank pin that are rotated by the motor about a crank axis so that at least one of the counterweight and the crank pin is rotated through the slot. The spindle includes a second end opposite the first end and defines a third distance taken between the first end and the second end of the spindle. The spindle further includes an anvil seat between the first end and the second end and defines a fourth distance between the anvil seat and the first end of the spindle. The power tool further includes an anvil received in the spindle, and the anvil defines a bit seat configured to receive a tool bit.

A power tool includes a motor, a spindle defining a first end with a slot, and a crankshaft including a counterweight and a crank pin that are rotated by the motor about a crank axis so that at least one of the counterweight and the crank pin is rotated through the slot. The spindle includes a second end opposite the first end and defines a third distance taken between the first end and the second end of the spindle. The spindle further includes an anvil seat between the first end and the second end and defines a fourth distance between the anvil seat and the first end of the spindle. The power tool further includes an anvil received in the spindle, and the anvil defines a bit seat configured to receive a tool bit.

A percussion tool including a parking assembly movable relative to a spindle. The parking assembly includes a seat coupled to the spindle, a first shuttle portion movable relative to an outer surface of the spindle, a biasing member positioned between the seat and the first shuttle portion, a second shuttle portion movable relative to the outer surface of the spindle, a bushing positioned within the spindle and configured to receive a portion of an anvil, and a fastener that couples the second shuttle portion to the bushing. The first shuttle portion and the second shuttle portion are movable together between a working position, in which a plurality of radial air vents in the spindle is closed, and an idle position, in which the plurality of radial air vents is open. The biasing member is configured to bias the first shuttle portion and the second shuttle portion into the idle position.

A portable power tool has a tool holder 2, a motor 8 and an electro-pneumatic striking mechanism 4. The striking mechanism includes an excitation piston 13, a striker 14, a pneumatic chamber 18 for coupling the striker 14 to the excitation piston 13 and an anvil 15 which is arranged in the striking direction 5 downstream of the striker 14 and is provided for transmitting a blow of the striker to the tool. The anvil is hollow. The hollow interior space 23 is closed in the striking direction 5 and counter to the striking direction 5.

A percussion tool includes a housing, a percussion mechanism including a striker supported for reciprocation in the housing along a first axis, and an anti-vibration system for attenuating vibration in a direction of the first axis. The anti-vibration system includes a linkage coupling the percussion mechanism to the housing. The linkage permits relative movement between the housing and the percussion mechanism along the first axis. The anti-vibration system also includes a counterweight supported by the percussion mechanism for relative movement therewith along a second axis that is parallel with the first axis. The counterweight reciprocates out of phase with the striker to attenuate vibration in the direction of the first axis.

A percussion tool includes a housing, a percussion mechanism including a striker supported for reciprocation in the housing along a first axis, and an anti-vibration system for attenuating vibration in a direction of the first axis. The anti-vibration system includes a linkage coupling the percussion mechanism to the housing. The linkage permits relative movement between the housing and the percussion mechanism along the first axis. The anti-vibration system also includes a counterweight supported by the percussion mechanism for relative movement therewith along a second axis that is parallel with the first axis. The counterweight reciprocates out of phase with the striker to attenuate vibration in the direction of the first axis.