Patent ID: 8647084

Claim:
A cylinder dividing mechanism of a pneumatic tool, which is accommodated in the groove of the pneumatic tool; the cylinder comprises of a circumferential wall and an internal chamber, of which the chamber is used to hold a rotor, onto which several vanes are set circumferentially for abutting onto the circumferential wall of the cylinder; it comprising: the rotor is set at a central demarcation point in the chamber, such that the chamber is segregated into a first and a second air pressure driving space; of which, the first and second air pressure driving spaces have an air intake section, a compression section and a pressure relief section; an air intake/exhaust dividing controller is set externally on the circumferential wall of the cylinder correspondingly to the joint of the first and second air pressure driving spaces; a first and a second external channel are set externally at interval on the circumferential wall of the cylinder, and either end of the first/second external channels is connected with the air intake/exhaust dividing controller; a first air intake is set on the circumferential wall of the cylinder and connected with the air intake section of the first air pressure driving space and the air intake/exhaust dividing controller; a first air vent is set on the circumferential wall of the cylinder and connected with the pressure relief section of the first air pressure driving space and the first external channel; a second air intake is set on the circumferential wall of the cylinder and connected with the air intake section of the second air pressure driving space and the second external channel; a second air vent is set on the circumferential wall of the cylinder and connected with the pressure relief section of the second air pressure driving space and the air intake/exhaust dividing controller; when air stream is guided by the air intake/exhaust dividing controller, it is divided and guided by two air intakes, air vents and external channels, such that a single chamber is provided with two air pressure driving spaces for synchronous compression and driving of the rotor to increase the torsion for the pneumatic tool.