Abstract: An external metering valve disposed on a gas fuel tank including an outlet rod is provided. The outlet rod includes an outlet orifice at a front end thereof. The external metering valve includes a metering valve and a gas guiding member. The metering valve includes a metering chamber. The gas guiding member includes a communication pipe, a blocking portion on the communication pipe, a discharging channel and an inlet orifice. The gas guiding member has a sealing outlet position and a metering outlet position. At the sealing outlet position, the outlet orifice outputs a gas and stores the gas in the metering chamber. At the metering outlet position, the blocking portion seals the outlet orifice through an airtight ring, and outputs the gas stored in the metering chamber through the inlet orifice and the discharging channel.

Abstract: An adapter structure for a gas fuel bottle cooperates with a bottle and is connected with a power tool. The adapter structure contains a body connecting with the bottle, a gas sealing assembly fixed inside the body, a fixing member cooperating with a spherical connecting portion of the power tool, and a plurality of elastic retaining members secured on the fixing member. Each elastic retaining member forms an elastic spreading mouth, and a diameter of the elastic spreading mouth is normally smaller than that of the spherical connecting portion, the elastic spreading mouth is pressed to expand so that the spherical connecting portion slides into or disengages from the opening. Each of the elastic retaining members is separated from the fixing member, whereby the adapter structure benefits easy die sinking and assembly.

Abstract: A gas can mounting structure includes a holder frame formed of a part of a gas-operated nail gun and defining an accommodation chamber for accommodating a gas can, a cover pivoted to the holder frame and turnable relative to the holder frame to close/open the accommodation chamber, and a control switch mounted in the holder frame and movable between a first position where a stop block of the button of the control switch is stopped at a stop block at the cover to lock the cover in the close position and a second position where the stop block of the button is released from the stop block of the cover for allowing the cover to be biased from the close position to the open position for easy loading/unloading of a gas can.

Abstract: A gas can mounting structure installed in a gas nail gun having a vertically movable safety rod is disclosed to include a gas can holder for accommodating a gas can, a positioning mechanism mounted in the gas can holder and having two side plate members for guiding insertion of a gas can into the inside of the gas can holder into position, and a spring-supported roller rotatably and slidably coupled between the two side plate members for stopping against the gas can being loaded in the gas can holder to prevent gas leakage during installation of the gas can.

Abstract: A gas nail gun includes a trigger, a pivoted baffle plate, and a liftable safety rod. When the safety rod is kept in the non-triggering position and not stopped against the workpiece, the baffle plate stops the trigger from operation. When the safety rod is stopped against the workpiece and lifted to the triggering position, the baffle plate is biased, allowing the trigger to be pressed. When the trigger is pressed and stopped against the baffle plate, the trigger is hooked up with a hook of the baffle plate so that the baffle plate is prohibited from biasing upon stoppage of the safety rod against the workpiece, avoiding accidental triggering of the trigger.

Abstract: A gas can for gas nail gun includes a can body having a top opening, a gas-filled inner bag mounted inside the can body, an inner bag connector, which has a tube holder joined to the inner bag and defining an axial through hole and a tube member that defines an air passage and is inserted through the axial through hole of the tube holder and rotatable between an unpositioned position where the tube member is removable from the tube holder and a positioned position where the tube member is locked to the tube holders, a cap fixedly fastened to the tube member and joined to the can body to block the top opening of the can body, and an air valve installed in the cap for guiding the gas out of the inner bag to the outside of the gas can.

Abstract: A gas can mounting structure includes a holder frame formed of a part of a gas-operated nail gun and defining an accommodation chamber for accommodating a gas can, a cover pivoted to the holder frame and turnable relative to the holder frame to close/open the accommodation chamber, and a control switch mounted in the holder frame and movable between a first position where a stop block of the button of the control switch is stopped at a stop block at the cover to lock the cover in the close position and a second position where the stop block of the button is released from the stop block of the cover for allowing the cover to be biased from the close position to the open position for easy loading/unloading of a gas can

Abstract: A gas can mounting structure installed in a gas nail gun having a vertically movable safety rod is disclosed to include a gas can holder for accommodating a gas can, a positioning mechanism mounted in the gas can holder and having two side plate members for guiding insertion of a gas can into the inside of the gas can holder into position, and a spring-supported roller rotatably and slidably coupled between the two side plate members for stopping against the gas can being loaded in the gas can holder to prevent gas leakage during installation of the gas can.