Abstract: A screw feeding device includes a feeder box, a stopper member, an operating member, and a resilient member. An adjustment slot is formed in the stopper member, and has two closed ends and alternate large-diameter and small-diameter slot portions. An operating protrusion of the operating member has a large-diameter protrusion portion and a small-diameter protrusion portion. The operating protrusion is biased by the resilient member away from the feeder box. The operating member is movable relative to the feeder box between a first position whereat the large-diameter protrusion portion is disposed within a selected one of the large-diameter slot portions, and a second position whereat the small-diameter protrusion portion is disposed in the adjustment slot.

Abstract: A screw feeding device includes a feeder box, a stopper member, an operating member, and a resilient member. An adjustment slot is formed in the stopper member, and has two closed ends and alternate large-diameter and small-diameter slot portions. An operating protrusion of the operating member has a large-diameter protrusion portion and a small-diameter protrusion portion. The operating protrusion is biased by the resilient member away from the feeder box. The operating member is movable relative to the feeder box between a first position whereat the large-diameter protrusion portion is disposed within a selected one of the large-diameter slot portions, and a second position whereat the small-diameter protrusion portion is disposed in the adjustment slot.

Abstract: A nailer with an illumination device located adjacent to the muzzle thereof comprises a nailer and an illumination device. The nailer has a muzzle defined at a front end of a housing thererof, between the muzzle and the housing is arranged a panel and a protection hood covered on the panel, and on the protection hood is formed a notch aligned with the muzzle. Beneath the protection hold is disposed a circuit board, on the circuit board is battery. A positioning hole is defined in a side of the protection hood facing the housing. A buffer is disposed in the positioning hole of the protection hood in such a manner that a part of the buffer protrudes out of the positioning hole and is to be pressed against the housing. The illumination device is disposed beneath the protection hood of the nailer and located correspondingly to the notch.

Abstract: The structure of a screw nailer includes a body with a functional space inside; a rotary driver, placed in the functioning space rotated from a point of support and having a gear wheel that moves the nail belt; a one-way driving component moving the rotary driver in a single direction; an indexing fixer creating elastic positioning when the rotary driver turns in a direction in a preset angle, so that the rotary driver achieves the indexing positioning. A blockage fixer, and by position of the blockage fixer to nail the screw by rotational inertia when the rotary driver of the screw nailer is rotating in direction with preset angle to keep the nail belt from turning the angles, so that the screws may be nailed accurately and securely to the designated location, and largely increase the accuracy, quality and effects of the screw nailer operation.

Abstract: The present invention relates to a screw-feeding device for a screw-driving tool comprising: a housing; a belt carrier is rotatably disposed in the housing and provided on the outer periphery with a plurality of teeth; a motion-transmitting member is disposed in the housing for driving the belt carrier to rotate unidrectionally; a guide rod assembly having a first free engaged with the motion-transmitting member and having a second free end used to rotate the motion-transmitting member; a positioning assembly pivotally is disposed in the housing for positioning the motion-transmitting member. The screw-feeding device is not only capable of feeding the screws precisely into the firing position, but also can hold the screws firmly.

Abstract: The structure of a screw nailer includes a body with a functional space inside; a rotary driver, placed in the functioning space rotated from a point of support and having a gear wheel that moves the nail belt; a one-way driving component moving the rotary driver in a single direction; an indexing fixer creating elastic positioning when the rotary driver turns in a direction in a preset angle, so that the rotary driver achieves the indexing positioning. A blockage fixer, and by position of the blockage fixer to nail the screw by rotational inertia when the rotary driver of the screw nailer is rotating in direction with preset angle to keep the nail belt from turning the angles, so that the screws may be nailed accurately and securely to the designated location, and largely increase the accuracy, quality and effects of the screw nailer operation.

Abstract: A striker assembly for a nailer comprises: a striker formed with an inserting hole; a piston formed at its clamping portion with a receiving groove for insertion of the connecting end of the striker, on the clamping portion is an inserting hole; a pin inserted in the inserting holes of the striker and the piston; a gap is formed at either side of the striker, and protruding portions are formed on the piston according to the shape of the gaps of the striker, whereby the protruding portions are stably engaged with the gaps of the striker. Thereby, the connecting strength between the striker and the piston is improved, and the service life of the striker assembly is prolonged.

Abstract: A striker assembly for a nailer comprises: a striker formed with an inserting hole; a piston formed at its clamping portion with a receiving groove for insertion of the connecting end of the striker, on the clamping portion is an inserting hole; a pin inserted in the inserting holes of the striker and the piston; a gap is formed at either side of the striker, and protruding portions are formed on the piston according to the shape of the gaps of the striker, whereby the protruding portions are stably engaged with the gaps of the striker. Thereby, the connecting strength between the striker and the piston is improved, and the service life of the striker assembly is prolonged.

Abstract: A screw bit replacing device for screw dispensers includes a main body having a passage defined therethrough in which a shaft is rotatably received. The shaft has a threaded recess defined in an end thereof so as to be engaged with a screw bit. A barrel has a tubular portion inserted in the passage and series of screws are sent in the barrel. A slot is defined through a wall of the tubular portion of the barrel and a plate is removably inserted in the slot. The plate has at least one aperture defined therethrough which is engaged with the screw bit so that when rotating the shaft, the screw bit is easily to be connected to or disengaged from the shaft.

Abstract: A screw feeding device includes a one-piece member composed of a gar, a hollow shaft and a positioning gear, a one-direction bearing received in the hollow shaft and a biasing plate contacting the positioning gear. The one-piece member reduces the space occupied by the parts of the device. An adjusting shaft has a serrated surface at one end to contact a safety board and a plurality of notches in the other end of the adjusting shaft, the notches are engaged with a bead biased by a spring, thereby controlling a depth of the screw that penetrates in an object. The guide body of the device is composed of two halves so that the manufacturing cost is reduced.

Abstract: A trigger assembly for a staple gun includes a trigger with an activation member received therein and an adjusting member engaged with the trigger. A cam rod rotatable extends through the body of the staple gun, the passage at an end of the trigger and an eccentric hole in the adjusting member. The adjusting member has a lug which can be engaged with two of the positioning notches defined in the body of the staple gun. The activation plate and the trigger can be lowered or lifted by rotating the adjusting member, and this adjustment changes the relative positions between the activation member, the valve of the staple gun and the safety plate so as to have single shooting or auto shooting feature.

Abstract: A screw dispensing device includes a pushing member which is connected to the slide piece so as to simplify the processes of operation of the device. A movable positioning plate allows the screws with different sizes to be easily inserted in the barrel of the device. A rotatable adjusting knob is pivotably connected to the rear end of the positioning plate and controls the movement of the positioning plate so as to adjust the depth of feeding of the screws.