Patent ID: 7572119

Claim:
An air cylinder, comprising: a cylinder body having a cylinder chamber therein for mounting a rotor, two open ends of the cylinder chamber being located at two end of said cylinder body; an air passage being formed in said cylinder body with two open ends of said air passage located at two ends of said cylinder body; a rear cylinder cap being covered onto a rear end of said cylinder body, and having an air inlet provided thereon to communicate with said air passage of said cylinder body, and an inner end of said air inlet also communicating with said cylinder chamber; a front cylinder cap being covered onto a front end of said cylinder body; a guide opening being formed on an inner end surface of said front cylinder cap, and communicating said air passage of said cylinder body with said cylinder chamber; and a plurality of exhaust holes being provided on at least one of said cylinder caps to communicate with said cylinder chamber, wherein said cylinder is configured to flow pressurized air entering said air passage through both said inner end of said air inlet and said guide opening into said cylinder chamber, wherein said rear cylinder cap is provided on an inner end surface with an air slot, such that said air slot is more closer to a center of said rear cylinder cap than said air inlet; a through hole being provided on said rear cylinder cap to communicate said air slot with said air inlet; and said front cylinder cap is provided on the inner end surface with an air slot, such that said air slot is more closer to a center of said front cylinder cap than said guide opening; and a through hole being provided on said front cylinder cap to communicate said air slot with said guide opening.