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: 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 the control valve includes a valve plug connected to the safety rod. The leaf spring is mounted between the trigger valve and the trigger for receiving actuation from the trigger, and one end of thereof being extended to a position for pushing the valve plug so that through pressing the trigger, the leaf spring is driven to push the valve plug and the safety rod to move downwardly, 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: 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 nail gun includes a fastener drive track capable of receiving fasteners having different length. A faster positioning assembly includes at least one swinging member and a stop portion. The swinging member is elastically and pivotably disposed at a side of the fastener drive track. The stop portion is formed at an end of the swinging member and received in the fastener drive track. The stop portion is configured for positioning fasteners prior to the fasteners are hit, and the stop portion retractably exits from the fastener drive track when a long fastener is received in the fastener drive track. The fastener positioning assembly enables the nail gun to drive fasteners having different length, as such, it is very convenient to use such nail gun to join different workpiece having different thickness on an object.

Abstract: A nail gun includes a housing defining a group of receiving grooves and a safety rod. The control valve includes a body and a valve stem slidably received in the body. The body is movably mounted in the receiving grooves and one end of the valve stem is arranged to sustain the safety rod at a predetermined height. The predetermined height can be adjusted by moving the body relative to the receiving grooves.

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 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 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 transmission mechanism for an electric nail gun includes a linear transmission unit and a rotary transmission unit in a housing of the electric nail gun. The rotary transmission unit includes an electric driven driving wheel. The linear transmission unit includes a rack and a hitting bar. The hitting bar is disposed at a bottom of the linear transmission unit. The rack is in mesh with the driving wheel, slidably installed in the housing by a spring force, and configured to receive driving from the driving wheel and to drive the hitting bar to move linearly downward so as to hit a nail.

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: 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: 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: A nail gun includes an air chamber, a main air passage, and a trigger valve with a valve body is disposed between the air chamber and the main air passage. The trigger valve includes a valve bar, an air exhausting passage an air guiding passage and a stopper. The stopper divides the valve body into an upper air chamber and a bottom air chamber. The upper air chamber is connected with the air chamber via the air guiding passage. The bottom air chamber is connected with the upper air chamber via at least one connecting passage disposed in the upper bar portion.

Abstract: An air passage of a nail gun includes a fixed cylinder disposed in a gun body, and a main valve disposed at a top portion of the fixed cylinder, a trigger valve between an air collecting chamber and a main passage, an air-in passage formed in the trigger valve connecting between the air collecting chamber and the main passage, an air-out passage formed in the trigger valve connecting between the main passage and external atmosphere, and a disc-shaped valve stopper forming a main chamber. The main chamber collects the high pressure air via the air-in passage to actuate the valve stopper to move up while the valve bar is pressed, and exhausts the high pressure air in the main chamber via the air-out passage to actuate the high pressure air in the air collecting chamber to drive the valve stopper and the main valve to move down to reposit while the valve bar is released.

Abstract: A moveable cylinder driving air passage of a nail gun with a gun body, which includes a trigger valve having a valve bar; 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 an upper portion of the stopper ring; and a main chamber formed at a bottom portion of the stopper ring, the main chamber connects with the air-in and air-out passages. 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 nail gun includes a cylinder, a main chamber, a piston slidably disposed in the cylinder, and a trigger valve disposed in the nail gun. The piston divides the cylinder into a top air chamber and a bottom air chamber, and the trigger valve can actuate the high pressure air in the main chamber to drive the main air valve to open or close the fluid communication between the main chamber and the top air chamber. A main air valve is disposed at a top portion of the cylinder, which includes a valve port, a top and bottom air tight rings disposed on the piston. The valve port is disposed between the top and bottom air tight rings when it is closed, and moves to a place away from the top air tight ring when it is opened.

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 nail gun includes an air chamber, a main air passage, and a trigger valve with a valve body is disposed between the air chamber and the main air passage. The trigger valve includes a valve bar, an air exhausting passage, an air guiding passage and a stopper. The stopper divides the valve body into an upper air chamber and a bottom air chamber. The upper air chamber is connected with the air chamber via the air guiding passage The bottom air chamber is connected with the upper air chamber via at least one connecting passage disposed in the upper bar portion.

Abstract: A filter is disposed inside an air chamber in a handle of a nail gun and located close to the end of the handle to divide the air chamber into a front chamber and a rear chamber. A cover with a connector extended therefrom is fixed on the end of the handle and a plurality of protruding ribs are formed on the inner wall of the front chamber, so that the filter is fixed between the protruding ribs and the connector. The filter includes an inner plate formed with a plurality of through holes and disposed adjacent to the front chamber, an outer plate formed with a plurality of through hole and disposed adjacent to the rear chamber and connected with the inner plate, and at least one filter element fixed between the inner and the outer plates to filter particles of high pressure air introduced into the air chamber.