A hand-held power tool, in particular a hammer drill or combination hammer, is disclosed. The power tool includes a tool housing which has a receiving recess designed to replaceably receive a storage battery or a power supply unit. The hand-held power tool further includes an electric drive motor having a cooling fan and a first vent portion which is located on the tool housing outside the receiving recess and through which a volume flow generated by the cooling fan can be guided. The tool housing has a second vent portion which is different from the first vent portion and which is located in the receiving recess and through which the volume flow generated by the cooling fan can be at least partially guided.

Providing an electric tool with excellent cooling efficiency. An electric tool includes: a housing 2; a motor 3; a fan 34; a sensing portion 41; a switching portion 42; and a circuit board 40. The motor 3 is accommodated in the housing 2. The motor 3 includes a stator 33, a rotor 32, and a rotating shaft 31. The rotor 32 is rotatable relative to the stator 33. The rotating shaft 31 is rotatable together with the rotor 32. The fan 34 is configured to generate a cooling air flow inside the housing 2. The sensing portion 41 is configured to detect a rotated position of the rotor 32. The switching portion 41 controls a rotation of the rotor 32. The sensing portion 41 and the switching portion 42 are mounted on the circuit board 40. The stator 33, the fan 34, the sensing portion 41, the switching portion 42, and the circuit board 40 are arranged in the housing 2 along an axial direction of the rotor 32 in the order of the fan 34, the sensing portion 41, the circuit board 40, the switching portion 42, and the stator 33.

A heatsink structure for a pile driver includes a rotation seat, a pivot base, a pile driver gear unit, and at least one radiating pipe. The rotation seat is pivotally connected with the pivot base. The pile driver gear unit is mounted in the pivot base and includes a receiving space and a vibration device. A pump device is mounted in the receiving space of the pile driver gear unit. The at least one radiating pipe is mounted on the pivot base. Thus, the lubricating oil in the receiving space of the pile driver gear unit is pumped by the pump device during operation and is delivered to the at least one radiating pipe so that the at least one radiating pipe cools down and carries away the heat of the lubricating oil.

A nail punching machine for driving in or pulling out rail spikes comprises a driving mechanism, which is driven by means of an electric drive motor. The electric drive motor is supplied with electric power by means of an accumulator. The nail punching machine is held by an operator by means of at least one handle.

A hand-held power tool includes an electric motor, a housing, and a housing cover. The housing includes an opening located in the vicinity of carbon brushes of the electric motor, such that the carbon brushes can be removed through the opening in the housing. The housing cover includes air inlets through which cooling air can flow into the interior of the housing. The opening in the housing is detachably closed by the housing cover.

A nail punching machine for driving in or pulling out rail spikes includes a driving mechanism, which is driven by an electric drive motor. The electric drive motor is supplied with electric power by an accumulator. The nail punching machine is held by an operator by at least one handle.

An impact tool includes a housing, an impact mechanism unit, a motor, and a dust collection fan. The housing is configured to mount a dust collection attachment. The impact mechanism unit is disposed inside the housing. The impact mechanism unit has a front end to which a tool bit is mounted and an impact element that reciprocates. The impact mechanism unit is configured to impact the tool bit by the impact element. The motor is disposed such that a rotation shaft of the motor intersects with an impact axis direction of the impact mechanism unit inside the housing. The dust collection fan is disposed on the rotation shaft. The dust collection fan is disposed below the motor.

A percussion tool includes a housing having a top end, a bottom end, a front end, and a rear end. The housing defines a barrel portion, a handle portion opposite the barrel portion, and a motor housing portion between the barrel portion and the handle portion. The percussion tool also includes an electric motor positioned within the motor housing portion and a percussion mechanism driven by the motor and including a striker supported for reciprocation in the housing. The striker defines a striker axis in a reciprocating direction. The percussion tool further includes a battery receptacle supported by the housing and a battery pack removably coupled to the battery receptacle for providing power to the motor. The battery pack and the battery receptacle define a battery axis extending longitudinally through the battery pack and battery receptacle. The striker axis and the battery axis are parallel.

A power tool (1) is provided, especially a hammer drill and/or a chiseling hammer drill, including a percussive mechanism (12) with a percussive element (13) to generate a percussive pulse onto a tool (1), the element being reversibly movable along a longitudinal axis (R) by a magnetic field in order to generate the percussive pulse, and including at least a first and a second coil device (1, 2) to generate the magnetic field. Each coil device (1, 2) has at least a first coil ring (3) with a first radius (R1) and a second coil ring (4) with a second radius (R2), whereby the first radius (R1) of the first coil ring (3) is greater than the second radius (R2) of the second coil ring (4), so that a space (S) is formed, at least in certain areas, between the at least first and second coil rings (3, 4), whereby a fluid (L), especially an air stream, that serves to cool the coil device (1, 2) can flow through the space.

A power tool having a hammer mechanism, including: a connecting part connectable with a dust collector, and with a connection flow path to suck in the air from the dust collector to generate a suction power in the dust collector; a motor with a rotating shaft; a first fan to rotate with the rotating shaft and generate a first air flow to cool down the motor; a second fan to rotate with the first fan and generate a second air flow to generate the suction power; a housing with a first exhaust port to discharge the first air flow and a second exhaust port to discharge the second air flow; a first exhaust flow path to guide the first air flow to the first exhaust port; and a second exhaust flow path separated from the first exhaust flow path to guide the second air flow to the second exhaust port.