Fastening Tool

摘要

The fastening tool includes a housing, a trigger, a cylinder, a piston, and a main valve. The main valve allows a communication between the cylinder and the first air chamber in conjunction with an operation of the trigger. The housing is formed with a first air chamber, a second air chamber, and a third air chamber. The second air chamber is communicated with the cylinder in conjunction with a movement of the piston. The third air chamber accumulates or discharges the compressed air in the first air chamber in conjunction with the operation of the trigger. The cylinder is movable between a first position where the cylinder upper chamber being in communication with the first air chamber, and a second position where the cylinder upper chamber being blocked from the first air chamber based on a differential pressure between the second air chamber and the third air chamber.

主权项

1. A fastening tool comprising:
a housing defining a first air chamber for accumulating compressed air; a trigger provided at the housing; a cylinder accommodated in the housing; a piston accommodated in the cylinder and dividing the cylinder into a cylinder upper chamber and a cylinder lower chamber; and a main valve configured to allow a communication between the cylinder upper chamber and the first air chamber in conjunction with an operation of the trigger, wherein: the housing is formed with a second air chamber and a third air chamber; the second air chamber is communicated with the cylinder upper chamber in conjunction with a movement of the piston, and the third air chamber accumulates or discharges the compressed air in the first air chamber in conjunction with the operation of the trigger; and the cylinder is movable between a first position where the cylinder upper chamber is in communication with the first air chamber, and a second position where the cylinder upper chamber is blocked from the first air chamber based on a differential pressure between the second air chamber and the third air chamber.