Abstract: A power tool includes an air spring cylinder. A piston is movably positioned within the cylinder and a driver blade and a rack are attached to the piston. The power tool includes a lifter gear including a lifter gear wheel portion, and a plurality of teeth extending radially from the lifter gear wheel portion and configured to engage the rack. A hub includes a first end operably connected to a motor output and a second end including a hub wheel portion. A first receptacle is provided in one of the lifter gear and the hub and a first bearing element extends from the other of the lifter gear and the hub into the first receptacle. A first elastomeric damper is positioned within the first receptacle between the first bearing element and a bearing element defined portion of the first receptacle.

Abstract: A power tool includes an air spring cylinder. A piston is movably positioned within the cylinder and a driver blade and a rack are attached to the piston. The power tool includes a lifter gear including a lifter gear wheel portion, and a plurality of teeth extending radially from the lifter gear wheel portion and configured to engage the rack. A hub includes a first end operably connected to a motor output and a second end including a hub wheel portion. A first receptacle is provided in one of the lifter gear and the hub and a first bearing element extends from the other of the lifter gear and the hub into the first receptacle. A first elastomeric damper is positioned within the first receptacle between the first bearing element and a bearing element defined portion of the first receptacle.

Abstract: A power tool includes an air spring cylinder. A piston is movably positioned within the cylinder. A head valve assembly of the power tool includes a flapper valve configured to seal the air spring cylinder from an air accumulator when the flapper valve is in a non-firing position.

Abstract: A nailer assembly includes a housing defining a drive section at a forward portion of the nailer assembly, and a grip section at an upper portion of the nailer assembly. A fastener magazine is located beneath the grip section and includes a feed portion proximate the drive section and a distal portion located distally from the drive section. A sacrificial protective support structure is positioned beneath the distal portion of the fastener magazine.

Abstract: An electric nail gun includes a muzzle seat, a safety component being movable relative to the muzzle seat, and a cylinder unit connected to the muzzle seat and including a striking cylinder, at least one storage chamber that is adapted for storing pressurized air, and a sealing cap that is coupled to the striking cylinder and the at least one storage chamber. The electric nail gun further includes an air valve disposed in the cylinder unit and being directly and solely movable by the safety component from a closed position to an open position to allow the pressurized air to flow into the striking cylinder, and a nail-striking unit driven movably by the pressurized air for striking a nail when the air valve is at the open position.

Abstract: A pneumatic nail gun includes a gun body, a muzzle connected to the gun body for receiving a nail, a cylinder unit disposed in the gun body, an air valve unit having a cover portion, and a striking unit having a piston. The cylinder unit includes a gas storage chamber, a striking cylinder having a cylinder chamber 510 in fluid communication with the gas storage chamber, and at least one gas storage cylinder in fluid communication with the gas storage chamber for receiving a gas having a pre-determined gas pressure. The cover portion is operable to interrupt fluid communication between the cylinder chamber and the gas storage chamber, and to allow the fluid communication such that the piston is pushed by the gas to strike the nail.

Abstract: A nail gun system includes a nail gun and a measuring device. The nail gun includes a cylinder unit, an inlet valve that is mounted to the cylinder unit for allowing air to enter the cylinder unit, and a power unit that is operable for increasing an air pressure inside the cylinder unit, and that is further operable for striking a nail using the air pressure. The measuring device is connected to the nail gun, and includes a pressure measurement module that is adapted for measuring a pressure value of the air inside the cylinder unit, and at least one display module that includes a display section, and a first indicator for indicating the pressure value on the display section.

Abstract: A pneumatic nail gun includes a striking device, a lifting wheel, a motor that is configured to drive the lifting wheel to rotate to lift the striking device, and a control device. The control device includes a microcontroller, and a sensor configured to output a sensing signal when detecting that the lifting wheel is at a predetermined angular position where the lifting wheel has lifted the striking device to arrive at a ready-to-strike position. The microcontroller controls the motor to drive the lifting wheel to rotate to lift the striking device when the sensing signal is not received, and controls the motor to stop the lifting wheel from rotating upon receiving the sensing signal from the sensor.

Abstract: A lifting gear is adapted to engage a nail-striking device of a pneumatic nail gun, and includes a gear body, a plurality of fixed teeth and a moving tooth. The gear body is rotatable by electric power, and has an annular peripheral surface formed with a slot. The fixed teeth extend outwardly from the annular peripheral surface of the gear body, and are angularly spaced apart from each other to engage a plurality of spaced-apart engaging teeth of the nail-striking device. The moving tooth is movably mounted in the slot, and is movable relative to the gear body from a default position to a retracted position to facilitate engagement between the fixed teeth and the engaging teeth of the nail-striking device.

Abstract: A cylinder device includes a base seat including a coupling portion that surrounds an axis, and a cylinder unit having a coupling segment that is inserted into an internal space of the coupling portion. The coupling portion has alternately arranged first protrusion parts and first intermediate parts formed on an inner surface thereof, and the coupling segment has alternately arranged second protrusion parts and second intermediate parts formed on an outer surface thereof. The coupling segment is rotatable about the axis from a locked position, where the second protrusion parts respectively engage the first protrusion parts, to an locked position, where the second protrusion parts respectively align with the first intermediate parts.

Abstract: An electric nail gun includes a muzzle seat, a safety component being movable relative to the muzzle seat, and a cylinder unit connected to the muzzle seat and including a striking cylinder, at least one storage chamber that is adapted for storing pressurized air, and a sealing cap that is coupled to the striking cylinder and the at least one storage chamber. The electric nail gun further includes an air valve disposed in the cylinder unit and being co-movable with the safety component from a closed position to an open position to allow the pressurized air to flow into the striking cylinder, and a nail-striking unit driven movably by the pressurized air for striking a nail when the air valve is at the open position.

Abstract: A pneumatic nail gun includes a main body, a cylinder, a muzzle device, a lifting wheel, a piston, a lifting rod, and a nail-striking pin. The piston is movable between a striking position and a non-striking position. The lifting rod is connected to the piston, and has an engaging portion that is engaged with the lifting wheel such that rotation of the lifting wheel drives the piston to the non-striking position, and that is disengaged from the lifting wheel such that the piston is driven by air pressure inside the cylinder to the striking position. The nail-striking pin is connected removably and co-movably to the piston, is spaced apart from the lifting rod, and is adapted for striking a nail when the piston is at the striking position.

Abstract: A pneumatic nail gun includes a gun body, a muzzle connected to the gun body for receiving a nail, a cylinder unit disposed in the gun body, an air valve unit having a cover portion, and a striking unit having a piston. The cylinder unit includes a gas storage chamber, a striking cylinder having a cylinder chamber 510 in fluid communication with the gas storage chamber, and at least one gas storage cylinder in fluid communication with the gas storage chamber for receiving a gas having a pre-determined gas pressure. The cover portion is operable to interrupt fluid communication between the cylinder chamber and the gas storage chamber, and to allow the fluid communication such that the piston is pushed by the gas to strike the nail.

Abstract: A pneumatic nail gun includes a main body, a cylinder, a muzzle device, a lifting wheel, a piston, a lifting rod, and a nail-striking pin. The piston is movable between a striking position and a non-striking position. The lifting rod is connected to the piston, and has an engaging portion that is engaged with the lifting wheel such that rotation of the lifting wheel drives the piston to the non-striking position, and that is disengaged from the lifting wheel such that the piston is driven by air pressure inside the cylinder to the striking position. The nail-striking pin is connected removably and co-movably to the piston, is spaced apart from the lifting rod, and is adapted for striking a nail when the piston is at the striking position.

Abstract: A striker includes a base portion, a striking portion, and two reinforcing ribs. The base portion has opposite slide surface and base surface, and a front end surface connected between the slide and base surfaces. The striking portion is formed on the front end surface, and has a maximum width in a direction perpendicular to a longitudinal axis smaller than a width of the front end surface. The reinforcing ribs are connected to the base portion. Each reinforcing rib has first and second edges disposed respectively distal from and proximate to the base surface in a direction perpendicular to the longitudinal axis, and disposed respectively distal from and proximate to the striking portion in a direction parallel to the longitudinal axis.

Abstract: A two-switch device is used for an electric nail gun. The electric nail gun includes a safety member movable to press against an article to thereby move in the gun body, a kinetic power unit for generating kinetic energy, an impact unit for outputting kinetic energy to perform a nail-striking operation, and a transmission unit for transmitting the kinetic energy. The two-switch device includes a first electrical control unit controlled by a trigger and the safety member for driving the kinetic power unit, and a second electrical control unit controlled by an inner plate for driving the transmission unit. By controlling actuation order of the safety member and the trigger, the electric nail gun can be changed between a single shot mode and a continuous shooting mode.

Abstract: An adjusting device for an electric nail gun includes a detecting unit, a sensing unit and an electric control unit. The detecting unit includes a detecting rod for being pushed by a nail received in the electric nail gun to be rotated. The sensing unit is for sensing the position of the detecting rod and generating a corresponding sensing signal. The electric control unit is electrically connected to a driving unit of the electric nail gun and the sensing unit, and switches the driving unit to a state corresponding to the sensing signal.

Abstract: An electric nail gun includes a main frame, a swing arm pivoted to the main frame, an impact member mounted movably to the swing arm, and a restoring mechanism including a sliding member, a first resilient member and a second resilient member. The sliding member is mounted movably to the impact member. The first resilient member is configured such that, when the impact member is driven to move away from a rear end of the swing arm, the sliding member is drawn to move toward a rear end of the impact member by the first resilient member, and the length of the linear deformation of the first resilient member is smaller than the travel distance of the impact member. The second resilient member biases the sliding member away from the rear end of the impact member.

Abstract: The control mechanism for an electric nail gun includes: a first sensor for generating a first sensing signal in response to movement of a safety member of the electric nail gun; a second sensor for generating a second sensing signal in response to operation of a trigger member of the electric nail gun; an actuating piece adjusted selectively between a single shot position and a successive shooting position, and rotatable relative to the trigger member; a third sensor for generating a third sensing signal in response to rotation of the actuating piece; and a control unit activating a driving module of the electric nail gun upon receipt of either one of the first and second sensing signals from the first and second sensors, and energizing an electromagnetic valve of the electric nail gun upon receipt of the third sensing signal from the third sensor.

Abstract: In an electric power tool, a flywheel can be driven by a driving unit to rotate about a wheel axis to thereby impart kinetic energy to a tool body through a force transmitting portion of the flywheel. A ventilating unit is mounted to rotate with the flywheel about the wheel axis. When the flywheel is driven to rotate, cooling air is generated by rotation of the ventilating unit.