| 摘要 |
A combination of a safety tube and a trigger assembly of a staple gun. The safety tube is movably connected to a distal end of the nose of the gun and electrically connected to an electromagnetic valve on the handle. The valve has a shaft movably seals an opening in communication with the main passage in the handle. A trigger assembly which is a button electrically connected to the valve. The safety tube is pushed against the object and activates the valve to seal a path which leads pressurized air to a space between the end cap and the end mount assembly, the button is pushed to move the end cap from the open end of the cylinder so as to eject a staple from the nose. The arrangement of the safety tube and trigger assembly allow the staple gun to have more linear and smooth outer contour.
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