Shock Absorption Structure of the Pneumatic Tool

A shock absorption structure of a pneumatic tool, the pneumatic tool comprising:

• a body including an air channel configured to flow high pressure gas, and the body including a cavity defined in the body, the cavity having a closing face formed on a first end thereof, and the cavity having an opening defined on a second end of the body opposite to the first end of the cavity, the body also including a first orifice passing through the cavity, and the body including a second orifice communicating with the air channel and the cavity, the first orifice accommodating a limitation element, a part of which extends to the cavity;
• a cylinder movably fixed in the cavity of the body and a part of the cylinder extending out of the body from the opening of the cavity, the cylinder including a sliding room defined in the cylinder, and the cylinder including a contacting fringe arranged on one end of the cylinder facing the closing face of the cavity of the fitting sleeve, the cavity of the body having an air chamber defined between the contacting fringe and the closing face, the cylinder having a defining cutout formed on an outer wall of the cylinder corresponding to the first orifice of the body, and the defining cutout accommodating a part of the limitation element which inserts through the first orifice, hence the cylinder straightly slides forward and backward within a predetermined range, the cylinder also including an air inlet defined on the outer wall of the cylinder corresponding to the second orifice of the body, and the air inlet being in communication with the second orifice within a sliding range of the cylinder;
• a gas valve unit fixed between the sliding room of the cylinder and the contacting fringe so as to control a flowing direction of the high pressure gas;
• an impact element disposed in the sliding room of the cylinder and being pushed by the high pressure gas to move reciprocately;
• and
• an elastic unit including an elastic pushing force and being secured in the air chamber of the body so as to push against the closing face of the cavity and the contacting fringe of the cylinder and to push the cylinder to move away from the grip handle.