Abstract: The present invention provides a pneumatic hand tool with adjustable operating angle, comprising a grip body and a tool head body interconnected with each other. The grip body has a grip flow channel, and said tool head body has a tool head flow channel. The grip body and said tool head body are interconnected through two rotary joint faces to form a joint portion capable of adjustment of the operating angle. The two rotary joint faces respectively have connecting areas for uniform circumferential motion and high pressure air ports configured along the rotation center. And the two rotary joint faces are inclined to facilitate adjustment of the operating angle of said tool head, and to ensure good air tightness of the high pressure air ports inside the joint portion.

Abstract: A nail drive device of electric nail gun includes a nailing rod and a rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator includes a stator and a rotor surrounding it, between the stator and the rotor, even groups of electro-magnetic mutual action components are configured in pairs, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by the specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified.

Abstract: An air-path structure of a pneumatic nail gun includes a main chamber formed in a gun body, a piston driving chamber and a timekeeping chamber that continuously releases pressurized air to the outside. The gun body is equipped with a trigger valve and a bar valve, and a security chamber and an auxiliary chamber are formed in the trigger valve; the trigger valve controls the pressurized air in the piston driving chamber to be discharged to the outside; and the bar valve controls the pressurized air in the main chamber to go into the piston driving chamber, the timekeeping chamber and the auxiliary chamber. The security chamber is permanently connected to the main chamber for concentrating upon the pressurized air, and the bar valve controls the pressurized air in the main chamber to be discharged into the timekeeping chamber, so as to improve the safety of pneumatic nail gun when used.

Abstract: A gas passage switching structure for a pneumatic rotary hand tool includes a pneumatic motor and a revolving valve disposed in a device case. The pneumatic motor has an input ending surface. A forward gas inlet and a reverse gas inlet are formed and spaced apart on the input ending surface. The revolving valve has a gas supply surface. A gas supply port and a discharge port are formed and spaced apart on the gas supply surface. The gas supply surface and the input ending surface are arranged along an axis line in the device case adjacent or in contact with the arrangement so that it allows the pneumatic motor to drive the forward and reverse rotation by the high pressure air flow along the fluid passage in the axis line direction.

Abstract: A pneumatic rotary tool includes a housing, a directional changeover mechanism, and a speed regulating mechanism. The housing includes a top body and a handle. The top body is fitted with a pneumatic motor. The handle defines a forward air channel, a reverse air channel, and an air supply passage. The air supply passage is controlled by a valve being operated by a trigger so that the air supply passage communicates with the forward and reverse air channels. The direction changeover mechanism is mounted in the top body along a transverse line and passes through the forward and reverse air channels for changing the rotational direction of the pneumatic motor. The speed regulating mechanism is mounted in the handle for adjusting the flow of compressed air entering the forward air channel. The tool can be operated conveniently to change the rotational direction and the output torque of the pneumatic motor.

Abstract: A pneumatic nail gun operated in automatic actuation mode includes a gun body, a trigger valve, and a shuttle valve. The gun body defines therein a main chamber and is provided with a forward air conduit and a return air conduit. The forward air conduit provides a path for the pressurized air in the main chamber to force a valve stem of the shuttle valve to conduct a forward movement for a drive stroke. The return air conduit provides a path for the pressurized air in the cylinder to force the valve stem to conduct a return movement after the nail gun has completed the drive stroke. By depressing an actuating bar of the trigger valve a single time, the valve stem can be forced to conduct repeated forward and return movements, and thus the nail gun can conduct repeated drive strokes for stably striking a nail.

Abstract: A dynamic clutch apparatus for an electrical nail gun includes a pair of symmetric direct stroke apertures formed on a gun body support; a firing pin set slidably installed on a side of the gun body support; a guiding base movably installed inside the gun body support; a pair of symmetric oblique stroke apertures formed on the guiding base. Aperture walls of the oblique and direct stroke apertures encircle and form an interconnected through aperture. Two pivot bearings are slidably installed inside the through aperture. A flywheel for accumulating kinetic energy is installed between the pivot bearings coaxially. An electromagnetic driver drives the guiding base to move, causing the through aperture to restrict the pivot bearings and the flywheel to move and press the firing pin set. Then, the firing pin set passes nail-percussion kinetic energy along a nail-percussion axial direction.

Abstract: A driving device for resetting a hitting nail bar of the pneumatic nail gun, which is mounted in a gun body including a main air chamber, a trigger valve, a hitting nail bar and a bottom cylinder chamber disposed therein is provided. The driving device includes a main gas channel and a sensing valve component slidably disposed in the main gas channel. The main gas channel communicates with the main air chamber and the bottom cylinder chamber via the trigger valve. The sensing valve component is controlled by the position of the hitting nail bar to be either opened or closed. The sensing valve component is opened on the condition that a reset state of the hitting nail bar is excluded, and the high-pressure air is introduced from the main air chamber into the bottom cylinder chamber to drive the hitting nail bar to move upwardly to reset rapidly.

Abstract: A locking mechanism for a nail gun includes a side slot formed on a bottom side of a gun body and a nail supplying slot connected to a drive track of the nail gun. A stopper element is formed on a side of a slider element corresponding to the side slot. The gun also includes a magazine in which a nail pusher facing the nail supplying slot and a lockout element facing the side slot are formed. The nail pusher has an ear portion. The lockout element includes a pushing arm and a moveable guide slot capping with the ear portion to restrict the sliding movement of the lockout element on the nail pusher. As the pushing arm extends towards the corresponding end of the nail supplying slot, a nail is pushed into the drive track to shoot. The lockout element enters into the side slot to block the stopper element when the nail is exhausted, so as to enhance the shooting blocking effect of the nail gun.

Abstract: An improved pneumatic device includes a body having a hollow cavity, defining an X axis and having a first end and a second end. The body includes a movable cylinder, a nail-firing piston rod and at least one exhaust hole. The movable cylinder and the nail-firing piston rod reciprocate along the X axis in the body by performing a forward stroke to the second end, and a return stroke back to the first end. The movable cylinder presents an open status when completing the forward stroke and presents a closed status when completing the return stroke. The movable cylinder has an exhaust hole and an exhaust valve disposed at an outer periphery thereof. When the nail-firing piston rod has not completed the return stroke yet and the cylinder is in the closed status, an exhaust channel is thereby formed to facilitate exhausting of air.

Abstract: A trigger valve controlling device for a pneumatic nail gun includes a main air passageway, a valve sleeve and a main air valve opening. The valve sleeve separates the main air passageway into a front passageway, a middle chamber and a rear passageway. After hitting nails, a high pressure air in the trigger valve controlling device is capable of driving a hitting bar of the pneumatic nail gun to move upward to reset.

Abstract: A blocking device for a nail gun includes a push member disposed on a nail pusher in a nail cartridge of the nail gun for moving toward a nail groove base with the nail pusher, a brake member movably installed on the nail pusher for moving toward the nail groove base with the nail pusher, and a rotational fastener pivotably installed on the nail groove base on a moving path of the push member and the brake member. The fastener can be touched to rotate by the push member when there are a small number of remaining nails in the nail cartridge so as to prevent the brake member moving to a position where it blocks an upward movement of the safety bar, and can be released by the push member and rotate back to an original position when there is no remaining nail in the nail cartridge so as to release the brake member to move to a position where it blocks an upward movement of the safety bar and thereby a nail shooting action of the nail gun. The accuracy of the nail shooting blocking is improved.

Abstract: A braking and driving mechanism includes a guide plate, a driving rod, a magazine, and a pressing rod. The pressing rod consists of a bar shaped arm with its two opposite ends extending to respectively form a tongue portion and a pushing portion. A pivot portion is formed between the tongue portion and the pushing portion. The pressing rod is pivotably disposed in the magazine via the pivot portion. An elastic member for driving the arm to transversely press a main body of each of the nails is disposed on the pushing portion. If the number of remaining nails in the magazine is equal to a default number the elastic member drives the tongue portion to move to a position where the tongue portion can block the stopping portion such that the movement of the driving rod is braked.

Abstract: An improved pneumatic device includes a body having a hollow cavity, defining an X axis and having a first end and a second end. The body includes a movable cylinder, a nail-firing piston rod and at least one exhaust hole. The movable cylinder and the nail-firing piston rod reciprocate along the X axis in the body by performing a forward stroke to the second end, and a return stroke back to the first end. The movable cylinder presents an open status when completing the forward stroke and presents a closed status when completing the return stroke. The movable cylinder has an exhaust hole and an exhaust valve disposed at an outer periphery thereof. When the nail-firing piston rod has not completed the return stroke yet and the cylinder is in the closed status, an exhaust channel is thereby formed to facilitate exhausting of air.

Abstract: A nail gun with a rapidly attachable and detachable magazine assembly includes a nail gun, a magazine assembly and a quick joining mechanism. A handle portion of the nail gun has a quick joining pillar adapted to engage with the quick joining mechanism to attach the magazine assembly to the nail gun. By simply snap-fitting the quick joining pillar into a fixing element of the quick joining mechanism, the quick joining mechanism can naturally fix the quick joining pillar into the fixing element, and thus, the magazine assembly can be attached to the nail gun by simply a single action. Moreover, by pulling a pull rod of the quick joining mechanism and withdrawing the quick joining pillar from within the fixing element, the magazine assembly can be attached from the nail gun by also simply a single action.

Abstract: The present invention relates to a nail gun with an improved attachable and detachable magazine assembly, comprising: a nail gun, a magazine assembly and an attach and detach mechanism. A handle portion of the nail gun has a joining pillar capable of joining with the attach and detach mechanism for attaching the magazine assembly with the nail gun, wherein the attach and detach mechanism further comprises: a fixing frame, a swinging fastening bar, a fastening member, and an elastic element. When it is desired to attach the joining pillar with the magazine assembly, the swinging fastening bar must be swung out firstly, so as to insert the joining pillar into the fixing frame, and continuously, to swing the swinging fastening bar close to the fixing frame, furthermore, then the fastening notch is able to grip and fix the joining pillar inside the fixing frame, finally, the joining pillar is completely attached with the magazine assembly.

Abstract: A braking mechanism for empty nail cartridge of a nail gun includes a guiding plate, a cover plate, a punch rod, a securing slide rod and a nail cartridge. A nail hole and an end hole are defined in the guiding plate having a connecting groove. A nail pusher and a pushing arm are arranged in the nail cartridge to provide resilient force along a nail firing direction. The pushing arm is pivotably placed on the nail pusher adjacent the brake portion for affording the resilient force. The pushing arm allows the brake portion of the nail pusher to go through the end hole and move into the end hole to block the stopper of the securing sliding rod when the nails are used up. The pushing arm moves into the connecting groove to improve the yield rate of the brake of the empty nail cartridge of the nail gun.

Abstract: A nail gun with a rapidly attachable and detachable magazine assembly includes a nail gun, a magazine assembly and a quick joining mechanism. A handle portion of the nail gun has a quick joining pillar adapted to engage with the quick joining mechanism to attach the magazine assembly to the nail gun. By simply snap-fitting the quick joining pillar into a fixing element of the quick joining mechanism, the quick joining mechanism can naturally fix the quick joining pillar into the fixing element, and thus, the magazine assembly can be attached to the nail gun by simply a single action. Moreover, by pulling a pull rod of the quick joining mechanism and withdrawing the quick joining pillar from within the fixing element, the magazine assembly can be attached from the nail gun by also simply a single action.

Abstract: A fastening tool includes a drive assembly configured to drive a fastener from the fastening tool, a work contact element moveable between an extended position and a depressed position, a trigger moveable between a release position and a fire position, an electric power source, an electronic control unit configured to deliver electric power from the electric power source to the drive assembly, and a single electric switch connected to the electronic control unit and configured to indicate that the work contact element is in the depressed position and the trigger is in the fire position.

Abstract: A tool for driving fasteners includes a work contact element configured to move between a first position and a second position. The tool is prevented from driving fasteners when the work contact element is in the first position. The tool further includes an extension member rigidly connected to the work contact element in a releasable connection arrangement. The releasable connection arrangement is configured to maintain a rigid connection between the work contact element and the extension member during normal operation of the tool. The releasable connection arrangement is further configured to release the rigid connection between the work contact element and the extension member during high impact events that are not associated with normal operation of the tool.