Abstract: A pneumatic motor-controlled valve of a screwdriver is installed between an air guide hole of a pneumatic motor and a main air valve gate in the screwdriver. A valve hole is formed on a guide seat and is communicated to an air guide hole of the motor. A plug is formed on an outer wall of a cylinder; and the cylinder is movably mounted within the guide seat. A lower spring resists against the cylinder. At least one ventilating hole is formed on a wall of the cylinder for communicating the valve hole to one of the upper valve opening and the lower valve opening of the main air valve gate. The plug drives the cylinder to actuate with the descending and rising of the piston valve so as to open or close the valve hole of the guide seat, thereby, the rotation of the motor is controlled.

Abstract: An air valve of a pneumatic motor of a screwdriver and an air path of the air valve is disclosed. A spindle of the pneumatic motor is formed with a bi-directional rod groove. One end of the rod groove is communicated to an air inlet of the pneumatic motor and another end thereof is formed with a valve gate to be communicated to an air supply in the screwdriver so as to form an air path to supply air to drive the pneumatic motor. A piston rod for beating a screw nail is mounted in the rod groove. An air stop washer is formed on the piston rod for controlling opening and closing of the valve gate with the movement of the screw nail as the screw nail is beaten so as to control the opening and closing of the valve gate. Thus rotation of the pneumatic motor is controlled.

Abstract: A pneumatic motor-controlled valve of a screwdriver is installed between an air guide hole of a pneumatic motor and a main air valve gate in the screwdriver. A valve hole is formed on a guide seat and is communicated to an air guide hole of the motor. A plug is formed on an outer wall of a cylinder; and the cylinder is movably mounted within the guide seat. A lower spring resists against the cylinder. At least one ventilating hole is formed on a wall of the cylinder for communicating the valve hole to one of the upper valve opening and the lower valve opening of the main air valve gate. The plug drives the cylinder to actuate with the descending and rising of the piston valve so as to open or close the valve hole of the guide seat, thereby, the rotation of the motor is controlled.

Abstract: A piston rod rotary driving device of a screw nail gun is disclosed. The structure is installed in a gun head of the screw nail gun. The gun head comprises at least one pneumatic motor; a cylinder; a piston rod in the cylinder; one end of the piston rod having a piston. A spindle of the pneumatic motor is installed with a rod groove for receiving the piston rod; and the spindle of the pneumatic motor drives the output disk to rotate. A plurality of polygonal supporting holes are installed at a center portion of the output disk. The piston rod is a polygonal rod so that the piston rod can be coupled to the supporting holes to move therein; and the output disk drives the piston to rotate. Thus, before pressing the trigger, the piston rod is compressed to received in the pneumatic motor so as to reduce the size of the gun head effectively.

Abstract: A triggering device of a nail driver has a single shooting mode and a continuous shooting mode. The triggering device is installed between a safety bar and a trigger of a driver body of the nail driver. The safety bar has an push sleeve extending out of a beating opening of the driver body; a trigger valve being on the driver body at an inner side of the trigger; a valve rod being in the trigger valve. When the trigger is triggered, the valve rod will be actuated so as to open the trigger valve to beat a nail. The trigger device comprises a swingable elastomer having a shape like a cambered hook and being pivotally installed within the trigger. A swingable end of the elastomer has at least one buckle. A hook is at one side of a swinging path of the elastomer. A tension spring is installed on the hook; and a movable rod is at another end of the swinging path of the elastomer. A compressible spring is installed on the movable rod which is assembled to the safety bar.

Abstract: A nail beating depth adjuster of a nail driver comprises a limiting cover, a first and a second spring, and a nut. The limiting cover is extended with a first seat and a second seat which are coaxial. A linkage passes through the holes in the first seat and second seat. A first spring encloses the linkage between the first seat and second seat. A nut encloses an outer thread of the linkage between the first seat and second seat. The first spring resists against the nut. The nut is formed with a plurality of buckling recesses which are spaced with an equal space. One of the end surfaces of first seat and second seat is formed with at least one tooth. Thereby, by the first spring pressing against the nut, the buckling recesses on the nut expands upon or engages with the tooth for adjusting and positioning.

Abstract: A pneumatic motor driving valve of a screw nail gun has a driving valve for control the pneumatic motor to be operated steadily. A downward pressing spring is installed around an outer wall of the cylinder of the gun body and an annular control valve is installed around the outer wall of the cylinder so that the annular control valve presses the downward pressing spring for actuating of the opening of the air inlet valve of the air inlet channel of the pneumatic motor. An annular control valve around an outer wall of the cylinder can accumulate the pressure in the gun body to a predetermined value so as to open the driving valve. Thereby, the pneumatic motor can provide a larger stable twisting force to beat and rotate a screw nail.

Abstract: A rotary cover head of a nail gun is disclosed. The nail gun has a separable head cover at a head of a body of the nail gun. A second air channel is formed in the head; and an aperture is formed on the second air channel. A first air channel is formed in the head cover; and the first air channel is formed with an opening. A lower end of the head cover and a top of the head of the nail gun are formed with respective lock surfaces which are coupled to each other. Each locking surface is formed with a circular air channel; the circular air channel cause the aperture of the head is communicated to the opening of the head cover. Thereby, the firing valve of the nail gun can be actuated by a trigger so as to cause the head cover can be assembled and detached easily.

Abstract: A cap stacking structure comprises a plurality of caps. Each cap has at least one axial ribs for stacking the plurality of caps together so that the plurality of caps are stacked along an axial line passing through an axial center of each cap; and gaps between two adjacent caps have a predetermined length. Each rib is extended from a periphery of each cap. One side of each cap is formed with a protruding round end and another side of each cap is formed with a groove having a shape with respect to the protruding round end. Thereby, the plurality of caps are stacked by the coupling of the protruding round end and groove.

Abstract: A rotary cover head of a nail gun is disclosed. The nail gun has a separable head cover at a head of a body of the nail gun. A second air channel is formed in the head; and an aperture is formed on the second air channel. A first air channel is formed in the head cover; and the first air channel is formed with an opening. A lower end of the head cover and a top of the head of the nail gun are formed with respective lock surfaces which are coupled to each other. Each locking surface is formed with a circular air channel; the circular air channel cause the aperture of the head is communicated to the opening of the head cover. Thereby, the firing valve of the nail gun can be actuated by a trigger so as to cause the head cover can be assembled and detached easily.

Abstract: An automatic cutting and feeding device for serially connected caps for a fastening tool, the device comprises a cap seat between a triggering device and a handle for cutting the serially connected caps, a rail set for delivering the serially connected caps and a receiving box for placing therein the serially connected caps. By cooperation of the rail set and the triggering device, the serially connected caps can be continuously sent into the cap seat; and by cooperation of the triggering device and the cap seat, the serially connected caps can be separated and accurately cut for fastening a thin sheet; thereby, the object of automatic cutting and feeding the serially connected caps can be achieved.

Abstract: A quick detachable fastener cover structure for a fastening tool comprising on the head of the fastening tool a cover plate, a housing, a pusher rod etc., wherein: the housing is fixed on the cover plate, and is provided with an engaging plate having a locking hoop, the cover plate is provided with a plurality of hooks and tenons; the guide plate is provided with engaging portions to engage the hooks on the cover plate; the guide plate has thereon a hook seat with a back hook and slide grooves to respectively receive the tenons and engage the locking hoop; the pusher rod is extended between the cover plate and the housing in order that it synchronically move with a safe slide rod on the guide plate; thereby a user needs only to simply move the engaging plate to in turn move the cover plate, and the cover plate on the guide plate can be quickly and tightly connected with or separated from the guide plate.

Abstract: A trigger switching structure of a contact/full sequential actuation fastening tool, being used in a trigger pivotally mounted between a safety yoke and a trigger valve both of the fastening tool, the switching structure is comprised at least of a receiving seat, a stop piece and a spring. The receiving seat is provided therein a positioning rod and a supporting rod, the stop piece is pivotally mounted on the receiving seat by the positioning rod, and the receiving seat can be combined with the trigger with the supporting rod; the spring is mounted straddling the trigger and the receiving seat to allow a user to move the receiving seat to change the contact position of the stop piece and the safety yoke of the fastening tool to choose a contact actuation or a full sequential actuation position desired for fastening.

Abstract: A nailer magazine with blocking device, comprising: a magazine body, having a rear end and an opening running along a longitudinal direction; a gliding body, inserted in the magazine body through the rear end thereof, glidingly movable in the longitudinal direction; and a blocking device. Two grooves are cut into the magazine body along the longitudinal direction, ending in rear entrances and having groove extensions. The gliding body has two lateral projections, which are glidingly movable in the grooves of the magazine body and have blocking elements attached, which are accommodated in the groove extensions. The blocking device is located close to the rear entrances and blocks the blocking elements from leaving the groove extensions through the rear entrances. By locating the blocking elements inside the magazine body, exposure to external impacts is avoided and good looks of the nailer magazine are not impaired.

Abstract: A nailer magazine, comprising: a magazine body, having a main axis and a free rear end; a gliding plate, glidingly movable into the magazine body into a mounted position and out of the magazine body through the rear end thereof; a holding plate, attached to the rear end of the magazine body; and a blocking system, attached to the rear end of the gliding plate for holding the gliding plate in the mounted position. The blocking system further comprises: a main body; a gliding element; a spring; and a blocking element. The gliding element is glidingly movable inside the main body in a direction perpendicular to the main axis, having an externally accessible upper end to be pushed manually into the main body. The spring is laid into the main body, pushing the gliding element towards the upper end thereof.

Abstract: An adjustable nailer magazine for storing nails to be ejected from a nailer, comprising: a magazine body, with a groove cut inside the magazine body for accommodating the nails in a row, the groove having a lower part, an upper part and a depth that determines a length of the nails; an adjusting device for adjusting the depth of the groove, mounted in the magazine body and having a plurality of adjusting plates, which are placed parallel to and above each other, oriented perpendicular to the nails; an outer adjusting cap on the outer side of the magazine body, which is glidingly movable, driving the adjusting device; and a pushing device, mounted in the magazine body, for pushing the nails towards one end of the magazine body. By moving the outer adjusting cap, the adjusting plates are placed one after another over the groove, reducing the depth thereof in various stages, thus allowing to vary the length of nails placed in the groove.

Abstract: The present invention relates to a safety trigger for a nailer, which is used to eject nails into a work object through a muzzle, with a gliding bar being pushed upward, when the muzzle is set on the work object, allowing an ejection switch to be operated, the safety trigger comprising: a trigger body, hingedly mounted on the nailer and operating the ejection switch when pulled up; a blocking part, rotatably mounted on a transverse shaft through the trigger body, either pointing towards a peripheral surface around the ejection switch or pointing aside, thus blocking or allowing the operation of the ejection switch by the trigger body; and a spring around the shaft, leaning against the gliding bar and against the blocking part; wherein, when the muzzle of the nailer is set on the work object and the gliding bar is consequently pushed upwards, the blocking part is turned aside, allowing the trigger body to be pulled upwards and operate the ejection switch, and when the muzzle is taken away from the work object,

Abstract: The present invention relates to an ejection switch for a nailer, comprising a valve seat, a gliding seat and a moving bar, allowing for precise controlling of the ejection of nails. The moving bar glides vertically within a gliding seat, with a vertical position that controls a loading state and an ejection state of the ejection switch. The gliding seat glides vertically within the valve seat. After ejecting a nail and after loading for another ejection, the gliding seat respectively moves against the moving bar. Thus the triggering of the loading state and of the ejection state follows the position of the moving bar in a hysteresis-like behavior and unwanted ejection of nails is prevented.

Abstract: The present invention relates to a safety trigger for a stapler, comprising: a switch for ejecting the nails being operated by pressing thereon from below; a trigger, mounted below the switch on the stapler, its front end having a hinge, where the trigger is mounted; a safety-catch, rotatably mounted on the trigger, operating in an enabled state and a disabled state, having a first projection extending outward for operating the switch, the first projection pointing to the switch in the enabled state and pointing beside the switch in the disabled state, the safety-catch further having a second projection extending towards the front end of the trigger; a first spring for moving the safety-catch into the enabled state; a second spring for moving the safety-catch into the disabled state; and a glide bar, vertically movable mounted on the stapler, the glide bar, when the stapler is set on an object, being pushed upward, contracting the second spring and allowing the first spring to move the safety-catch into the e