Abstract: A device for driving a plurality of fasteners includes a driver assembly having a drive block, a flywheel and a driver mount. The driver mount is configured to move between a first position where the flywheel is removed from the drive block and a second position where the flywheel engages the drive block. The device also includes a work contact element configured to move between an extended position and a depressed position. A blocking arm is connected to the work contact element and configured to move with the work contact element. The blocking arm is positioned in a path of movement of the driver mount when the work contact element is in the extended position. The blocking arm is removed from the path of movement of the driver mount when the Work contact element is in the depressed position.

Abstract: A trigger valve includes a valve base, a valve rod, a sliding portion and a shuttle valve. The valve base is disposed at a gun body of the nail gun between a compressed chamber and a main air valve of the nail gun. The valve rod is capable of being driven by a trigger of the nail gun to move so as to open or close high pressure air from the compressed chamber into the valve base. The sliding portion is capable of being driven by high pressure air to move to cause a safety slide rod of the nail gun producing a displacement along a hitting-nail direction. The shuttle valve is capable of being driven to move under control of the displacement of the sliding portion so as to open or close high pressure air from the valve base into the main air valve.

Abstract: A nail gun switch mechanism includes a gun body and a trigger. A safety slidable bar has a bottom part which extends outside of a hitting mouth at a bottom of the gun body. The trigger has a trigger lever being pivotably disposed therein. A top part of the safety slidable bar extends near to an end of the trigger and a swing arm is pivotably disposed on the top part of the safety slidable bar. The swing arm includes an arm part extending from a pivotal center of the swing arm and a push part extending from the arm part toward outside. The push part is configured to be switched to a first or a second swing position and thus driven by the safety slidable bar to touch the trigger lever so as to operate the nail gun in a sequential or a contact actuation mode.

Abstract: A device for impacting a fastener in one embodiment includes a housing with an upper housing portion, a middle housing portion, and a side housing portion extending between the upper housing portion and the middle housing portion, a drive cylinder configured to vent within the housing, an air passage extending through the housing and including a mouth at the upper housing portion, and a strike plate extending over the upper housing portion and including a top portion positioned apart from the upper housing portion, and a first side extension extending downwardly from the top portion along the side housing portion to a location above and spaced apart from an outwardly extending first surface of the middle housing portion.

Abstract: An air injection mechanism for nail guns includes a gun body having an air chamber; a valve base having a rod hole disposed in the gun body; a movable valve rod, one end of the valve rod engages with the rod hole and extends out of the gun body to form a press end, and another end of the valve rod extends through the air chamber and fixes to another side surface of the gun body, the valve rod and the rod hole cooperate to form an air guiding gap therebetween, the valve rod includes a ringed pushing surface; an air guiding passage formed in the valve rod, which includes an air inlet port connecting to the air guiding gap and an air injection port connecting to environment; an O-ring disposed in the rod hold for controlling the flux of the air that discharged form the air injection port.

Abstract: In a controlling mechanism for pneumatic nailer, the pneumatic nailer includes a leaf spring, a trigger, a trigger valve and a safety rod attached to a main body of the nailer. The control mechanism includes a control valve and a connecting rod. The control vale includes a valve plug adjacent to the safety rod. The connecting rod is engaged with the valve plug and the safety rod. The connecting rod extends to a position that is capable of being pressed by the leaf spring. The connecting rod is configured for driving the valve plug and the safety rod to move downwardly when the leaf spring press thereof, thereby controlling the pressurized air to drive the nail gun. As such, the valve plug can move in to a position that can to control the nail hitting action of the nail gun in advance so the stability of control increases.

Abstract: A bushing for conducting air in a nail gun is arranged between an air chamber and a cylinder received in a housing of the nail gun. The bushing is adjacent to a bottom of a main valve for driving hitting motion of the nail gun. A number of main valve holes that are adjacent to the main valve are formed in a sidewall of the cylinder. At least one air inlet is formed in a bottom of a sidewall of the cylinder. An air flow passage is defined in the housing and is in communication with the main valve and the air hole. A valve plug which is configured for opening or closing the air flow passage is received in the air flow passage. The valve plug divides the air flow passage into an upper portion and a lower portion. The lower portion is formed in the housing. An annular end surface is formed on a top of the bushing. The annular end surface defines a main air inlet for the main valve. An end portion extends from the bushing and having the upper portion of the air flow passage formed therein.

Abstract: An exemplary compressed air filter assembly for nail gun has an end cap at a handle of the nail gun, having an inlet aperture for guiding external compressed air therein, communicating with a main air chamber of the handle; an inlet pipe extending in the inlet aperture and the main air chamber, having a ring-shaped step formed at an inner peripheral surface of a sidewall thereof; and a filter disposed at the inlet pipe. At least one bar is provided at the sidewall of the inlet pipe, transversely disposed in the inlet aperture, and the filter being disposed between the at least one bar and the ring-shaped step. The compressed air filter assembly for nail gun utilize the at least one bar to support a center portion of the filter, which can improve the strength of the filter to resist the blasting of the compressed air.

Abstract: An actuator is arranged in a housing of an electrical nail gun. The actuator includes a sliding base, an external-running brushless direct current motor, a swing base and an electric driver. The sliding base is slidably disposed on an end of a located supporter which is positioned in the housing. The sliding base loads a spring and forms a hitting nail bar thereon. The motor has a stator and a rotator attached on an outer wall of the stator. A flywheel is driven by the motor and is configured to engage or disengage with/from the sliding base. The swing base is pivotally mounted on the housing. The swing base is adjacent to the sliding base and the supporter. The motor is installed in the swing base. The electric driver is attached to the housing and is adjacent to an end side of the swing base. The electric driver has a rod member driven by electricity.

Abstract: A clutch mechanism arranged in a housing of an electrical nail gun includes a sliding base, a driver driven by electricity, a swing base pivotally mounted on the housing, and an electric driver attached to the housing and being adjacent to an end side of the swing base. The sliding base is slidably disposed on an end of a free roller positioned in the housing, and the sliding base loads a spring and forms a hitting nail bar thereon. The driver has a motor and a flywheel driven by the motor, and the flywheel is configured to engage or disengage with/from the sliding base. The swing base is adjacent to the sliding base and the free roller and receives the driver therein.

Abstract: An abutment adjusting device for a nail gun has a horizontal sliding rail disposed on a bottom side of a nail cartridge of the nail gun. The sliding rail has multiple positioning grooves. An abutment having a containing groove opening upward is disposed on the sliding rail. The containing groove has two groove sidewalls, each of which has at least a vertical guiding channel for slidably disposing a sliding block in the containing groove. The sliding block has a top having at least a protruding part corresponding to the positioning grooves. A first elastic unit is disposed in the containing groove for driving the sliding block to move upward and further drive the protruding part to be engaged into the positioning grooves so as to position the abutment.

Abstract: A control device for hitting nails of a pneumatic nail gun includes a control valve. The control valve is arranged in a main air flow passage between a trigger of the nail gun and the main air valve. The control valve has valve cover to open or close the main air flow passage. A valve bolt is slidably disposed in the valve cover. The valve bolt can be driven by the high pressure air to move down. A safety slide pole is slidably disposed in a gun body for blocking or releasing the valve bolt to move down. Therefore, a position of the safety slide pole can reflect a height of a work part which to be nailed. The valve bolt can detect the height reflected by the safety slide pole to guide in the high pressure air from the main air flow passage to hit nails. Thus, the controlling stability is enhanced. The components are also simplified.

Abstract: A nail pusher locating device for a magazine assembly has a nail pusher slidingly disposed in the magazine assembly; and a first elastic element between the magazine assembly and the nail pusher for driving the nail pusher to move toward a top end of the magazine assembly. The nail pusher has at least one bended-shaped guiding groove. The guiding groove has an entrance, an exit, and a capturing notch, opening to the top end, and a ridge protruding from an inner sidewall thereof, opposite to the capturing notch. The nail pusher further has a guiding flange slantwise extending to the entrance. The magazine assembly has a sway arm pivotally disposed at a tail end thereof, which has at least one guiding pole corresponding to the guiding flange. In addition, a second elastic element is provided between the tail end and the sway arm.

Abstract: A transmission mechanism for an electrical nail gun includes a rotary transmission unit and a linear transmission unit in a housing of the electrical nail gun. The rotary transmission unit includes a motor driven by electricity, a flywheel driven by the motor and extending to form a cylinder thereon, a solenoid activated by electricity, and a moveable driving wheel adjacent to an end side of the cylinder. A clutch is formed between the cylinder and the driving wheel. The solenoid is buried in the cylinder so that a magnetic conductivity loop is constructed around the solenoid to produce the magnetic field when the solenoid is activated.

Abstract: An integrated circuit (IC) with a self-proofreading function includes a micro control unit (MCU) and a one-time programmable (OTP) memory connected with the MCU. The OTP memory includes an instruction memory region for storing instructions and a parameter memory region for storing standard parameters for proofreading. The MCU computes a measured result according to the standard parameters. The IC can operate without an external memory, therefore, the proofreading procedure using the IC is simplified, and the cost of the terminal product using the IC can be reduced.

Abstract: A trigger switch mechanism of a nail gun is pivotally attached between two side plates of a trigger of the nail gun. The switch mechanism includes a blocking piece pivotally attached to a safety slide rod and a trigger valve rod of the nail gun. Each of the side plates includes an axis hole, and two blocking grooves are disposed in the axis hole. The switch mechanism includes a plurality of blocking teeth, and a spring is disposed between one of the side plate and the switch mechanism to abut the switch mechanism and nest the blocking teeth into the blocking groove for stopping the switch mechanism. The switch mechanism includes a dial portion for being dialed by a hand of the operator, which is capable of deviating the blocking teeth from the blocking grooves to release the switch mechanism, and rotating the switch mechanism to adjust the position of the blocking piece relative to the safety slide rod, so as to realize conveniently switching the operation modes of the trigger of the nail gun.

Abstract: A nail gun includes a moveable cylinder, an air collecting chamber and a main passage. An air passage includes a trigger valve; an air-in passage formed in the trigger valve connecting between an air collecting chamber and a main passage; an air-out passage formed in the trigger valve connecting between the main passage and external atmosphere; a stopper ring formed at an outside surface of the cylinder and slidably attached in the gun body; an air tank formed at a stopper ring; and a main chamber formed at a bottom portion of the stopper ring. The main chamber is capable of collecting the high pressure air via the air-in passage to actuate the cylinder to move up while the valve bar is pressed, and exhausting the high pressure air via the air-out passage to actuate the cylinder to move down for reposition while the valve bar is released.

Abstract: A pneumatic nail gun includes a gun body having an immovable cylinder therein; a hitting piston disposed in the cylinder; a main air housing collecting a compressed high pressure air with a constant pressure; and at least one main passage disposed at a peripheral portion of the cylinder or a side of the main air housing, the at least one main passage having a valve bolt therein to divide the main passage into a top passage, a middle valve chamber, and a bottom passage, the top passage and the middle valve chamber being connecting with the main air housing for introducing and gathering high pressure air therein, the middle valve chamber being connecting with the bottom passage via a main valve opening, the valve bolt being capable of controlling the opening and closing of the main valve opening for rapidly repositing the piston.

Abstract: A pneumatic nail gun includes a gun body, a movable cylinder, a piston and a slidable sleeve valve. The gun body has a main air housing collecting a compressed high pressure air with a constant pressure, and a trigger at one end of the main air housing driving the high pressure air to shoot a nail. The movable cylinder is disposed in the main housing, which moves upward when the trigger is pressed, and moves downward for reposition when the trigger is released. The piston is slidably movably disposed in the cylinder, which has a driver blade extending from the piston. The driver blade protrudes out of the gun body for punching against the nail in accordance with a downward movement of the piston. The slidable sleeve valve is assembled at an outer peripheral surface of the cylinder, which introduces high pressure air to drive the piston move upward when the cylinder moves downward to its lower dead center, and is driven downward after the piston moves to its upper dead center.