Abstract: A driving device for a nail gun includes a striking unit and an air storage unit. The striking unit includes a striking cylinder connected to the nail gun and defining a cylinder chamber having an opening, and a piston disposed in and making an air-tight contact with the striking cylinder. The air storage unit includes an air storage cylinder including a protrusion that protrudes toward the opening and cooperating with the striking cylinder to define an air storage chamber that is in fluid communication with the cylinder chamber via the opening. When the piston moves in a pressure-generating direction, air in the air storage chamber is pressurized. The air storage unit further includes a lubricant disposed in the cylinder chamber and the air storage chamber, and flowing along the protrusion into the cylinder chamber to lubricate the piston.

Abstract: A pneumatic electric nail gun includes a muzzle unit, a striking cylinder that is connected to the muzzle unit, a piston rod subunit that extends movably from the striking cylinder into the muzzle unit, an electric unit that drives movement of the piston rod subunit from a standby position to a nail-striking position for striking a nail, and a connecting unit that includes a plurality of fasteners and a plurality of buffer members. The fasteners extend through the electric unit and secure the electric unit to the muzzle unit. Each of the buffer members surrounds a respective one of the fasteners and fills a space between the respective one of the fasteners, the electric unit and the muzzle unit for shock absorption during a nail-striking process.

Abstract: An electric power tool includes a motor, a lifter, a firing pin, an electromagnet, a driving circuit, a latch, and a controller. The lifter is driven by the motor to drive the firing pin to perform a firing action. The driving circuit provides electric current to excite the electromagnet. The latch is moved by the electromagnet from a blocking position where the latch blocks the firing pin to move in a firing direction to a non-blocking position where the latch does not block the firing pin when the electromagnet is in an excited state. The controller, during an excitement period, controls the driving circuit to provide constant current for a first time period to excite the electromagnet to the excited state, and provide pulsating current for a second time period to keep the electromagnet in the excited state.

Abstract: A lifting gear assembly for an electric nail gun that strikes a nail in a nail-striking direction includes a muzzle seat connected to the electric nail gun, a sprocket unit including two sprocket wheels spaced apart from each other and rotatably mounted in the electric nail gun, a motor unit for driving rotation of one of the sprocket wheels, and a chain unit including a roller chain trained on the sprocket wheels and a lifting gear device mounted to the roller chain. The lifting gear device includes a pushing member driven movably by the roller chain along a path having a stroke in which the pushing member moves in a pressure-generating direction opposite to the nail-striking direction. The pushing member pushes the striking pin, when moving along the first stroke, to move the striking pin from a post-striking position to a pre-striking position.

Abstract: An electric nail gun includes a nail-striking subunit that is adapted to strike a nail, a lifting wheel that is movable to become engageable and not engageable with the nail-striking subunit, a driving member that is rotatable by a motor, and a transmission shaft that is movably connected between the driving member and the lifting wheel, and that is convertible between a first position, where the lifting wheel is engageable with the nail-striking subunit such that rotation of the driving member results in movement of the nail-striking subunit, and a second position, where the lifting wheel is not engageable with the nail-striking subunit such that rotation of the driving member does not result in movement of the nail-striking subunit.

Abstract: A pneumatic pallet nailer includes a nailer body, a trigger member, a pallet clamp controlling member, a pallet clamp cylinder and a pallet clamp. The trigger member is disposed on the nailer body. The pallet clamp controlling member is disposed on the nailer body and includes an internal space, a first pipe, a second pipe, a third pipe and an actuating valve. The air in the nailer body is communicated with the internal space by the first pipe and the second pipe. The third pipe is communicated with the internal space. The actuating valve is movably disposed in the internal space, and the actuating valve is actuated and positioned at a first position or a second position. The pallet clamp cylinder is communicated to the third pipe. When the trigger member is pressed, the pallet clamp is actuated by the pallet clamp cylinder to clamp a workpiece.

Abstract: A nail gun includes a frame unit, a power unit that is configured to drive a nail-striking action during a driving process, a switch unit that includes a first switch and a second switch configured to initiate the driving process when both actuated, a safety unit that is operable to convert between a non-triggerable state and a triggerable state for actuating the first switch, and that includes a moving assembly that is movable relative to the frame unit along a moving path, and a trigger unit that includes a trigger pivotable between a sequential firing position and a continuous firing position, and an operating member pivotable between the trigger and the second switch.

Abstract: An electric nail gun includes a nail-striking subunit that is adapted to strike a nail, a lifting wheel that is movable to become engageable and not engageable with the nail-striking subunit, a driving member that is rotatable by a motor, and a transmission shaft that is movably connected between the driving member and the lifting wheel, and that is convertible between a first position, where the lifting wheel is engageable with the nail-striking subunit such that rotation of the driving member results in movement of the nail-striking subunit, and a second position, where the lifting wheel is not engageable with the nail-striking subunit such that rotation of the driving member does not result in movement of the nail-striking subunit.

Abstract: A pneumatic electric nail gun includes a muzzle unit, a striking cylinder that is connected to the muzzle unit, a piston rod subunit that extends movably from the striking cylinder into the muzzle unit, an electric unit that drives movement of the piston rod subunit from a standby position to a nail-striking position for striking a nail, and a connecting unit that includes a plurality of fasteners and a plurality of buffer members. The fasteners extend through the electric unit and secure the electric unit to the muzzle unit. Each of the buffer members surrounds a respective one of the fasteners and fills a space between the respective one of the fasteners, the electric unit and the muzzle unit for shock absorption during a nail-striking process.

Abstract: A pneumatic pallet nailer includes a nailer body, a trigger member, a pallet clamp controlling member, a pallet clamp cylinder and a pallet clamp. The trigger member is disposed on the nailer body. The pallet clamp controlling member is disposed on the nailer body and includes an internal space, a first pipe, a second pipe, a third pipe and an actuating valve. The air in the nailer body is communicated with the internal space by the first pipe and the second pipe. The third pipe is communicated with the internal space. The actuating valve is movably disposed in the internal space, and the actuating valve is actuated and positioned at a first position or a second position. The pallet clamp cylinder is communicated to the third pipe. When the trigger member is pressed, the pallet clamp is actuated by the pallet clamp cylinder to clamp a workpiece.

Abstract: A nail gun includes a gun body, a safety unit and an adjusting unit. The safety unit includes a first safety member movable relative to the gun body, and a second safety member for being pushed by the first safety member. The adjusting unit includes a switch member movable between a deep-drive position and a shallow-drive position. The switch member has a first abutment surface aligned with the first safety member when the switch member is at the deep-drive position, and a second abutment surface aligned with the first safety member when the switch member is at the shallow-drive position.

Abstract: A nail gun includes a gun body, a safety unit and an adjusting unit. The safety unit includes a first safety member movable relative to the gun body, and a second safety member for being pushed by the first safety member. The adjusting unit includes a switch member movable between a deep-drive position and a shallow-drive position. The switch member has a first abutment surface aligned with the first safety member when the switch member is at the deep-drive position, and a second abutment surface aligned with the first safety member when the switch member is at the shallow-drive position.

Abstract: An air source controlling device for a pneumatic nail-gun includes a body, a choke valve and a switch. The body includes a controlling chamber for connecting a compressed air source, an air passage for communicating the controlling chamber and the pneumatic nail-gun, a switch channel communicating the air passage and an accommodation space, and an air vent hole communicating the accommodation space and an external environment. The choke valve is disposed in the controlling chamber and is switchable between a communicating status and a non-communicating status for controlling the opening or closing between the controlling chamber and the air passage. The switch includes an actuating member slidably disposed in the switch channel and the accommodation space without covering the air vent hole. A sealing member is disposed on the actuating member and is sealed with the switch channel. The actuating member activates the choke valve.

Abstract: A fuel transmitting device is adapted for use in a gas nail gun which is formed with a combustion chamber and an accommodating chamber, and includes a cylinder cover, a door pivotable between a close position and an open position, and a connector. The cylinder cover is formed with a passage having an inlet that is proximate to the accommodating chamber and an outlet that is proximate to the combustion chamber. The connector has an input opening and an output opening. When the door is at the close position, the connector is received in the accommodating chamber and the output opening communicates with the inlet of the cylinder cover. When the door moves from the close position to the open position, the connector is removed from the accommodating chamber.

Abstract: A nail gun includes a body, a valve unit, a nail striking member and a detector. The body has a nail path, an air chamber, and an intake chamber guiding flow of air into the air chamber. The nail striking member is drivable by air pressure in the air chamber for striking a nail in the nail path. The valve unit is operable to switch between unblocking and blocking states to respectively permit and prevent fluid communication between the intake chamber and the air chamber. The detector is connected pivotally to the body, and is contactable with the valve unit such that, when there is no nail in the nail path, the valve unit is controlled by the detector to be in the blocking state.

Abstract: A nail gun includes a gun body, a safety unit, a detecting member and a blocking unit. The gunbody defines a firing path and a guiding groove therein. The safety unit is movable relative to the gun body. The detecting member and the blocking unit are disposed on the firing seat. When both the firing path and the guiding groove receive nail therein, the detecting member abuts against the nail in the guiding groove and is spaced apart from the nail in the firing path, and the blocking unit permits the movement of the safety member relative to the gun body. When the firing path and the guiding groove are empty, the detecting member is inserted into the firing path, and the blocking unit hinders the movement of the safety member relative to the gun body.

Abstract: A fastener gun capable of preventing accidental discharging includes a gun body, a safety unit and a fastener magazine. The gun body has a firing channel and the safety unit is disposed adjacent the firing channel. The fastener magazine is utilized to guide a fastener strip. The fastener gun further includes a connecting portion and a stopping bar. The stopping bar is disposing on the connecting portion and capable of moving between a first position and a second position. The stopping bar has a pushing portion and a stop portion. The pushing portion may be optionally pushed by the fastener strip. When the stopping bar locates at the first position, the stop portion stops the movement of the safety unit. When the stopping bar locates at the second position, the stop portion does not stop the movement of the safety unit.

Abstract: A metering valve includes a valve main body consisting of a body and a cover, a sliding rod and an elastic member. The body has a positioning hole, a metering chamber, a containing space, and two sealing pads disposed on two end portions of the metering chamber. The containing space is for assembling the gas cylinder. A groove is disconnected with the positioning hole, the metering chamber and the containing space. The sliding rod has two ends, wherein a gas channel is formed from one end toward an inner of the sliding rod, the sliding rod has a flange and a through hole, the through hole under the flange is for connecting the gas channel, and the sliding rod blocks a gas from the metering chamber by cooperating with the sealing pads. The elastic member in the groove is connected to the flange and the groove.

Abstract: An anti-separating mechanism for preventing a fastener strip from separating from a fastener gun is disclosed. The anti-separating mechanism is disposed in the fastener gun. The fastener gun includes a gun body, a fastener magazine and a feed member. The gun body includes a firing channel to receive a fastener. The fastener magazine is connected to the firing channel and is utilized to guide the fastener strip including a plurality of fasteners. The feed member is utilized to push the fastener strip in a first to direction toward the firing channel. The anti-separating mechanism includes a lever pivotally disposed on the fastener magazine. The lever swings between a stop position and a release position. The lever includes a stop surface, a withstanding portion and a tapered pushing surface. The tapered pushing surface is farther from the firing channel than the stop surface.

Abstract: A gas container driving device for use in a gas nail gun includes a main body and a cap member. The main body is connected to a gun body of the gas nail gun and has a lever section. When a sleeve is moved relative to the gun body for sealing a combustion chamber, the lever section is pushed and moved by the sleeve to push a gas container received in a receiving space of the gun body for releasing gas into the combustion chamber. The cap member is pivoted to the main body and engages removably the gun body for sealing the receiving space during operation of the main body.