Driving device for an air compressor

Abstract

A driving device for an air compressor includes a base, a motor, a main gear, a subordinate gear, a shaft, a weight, and a driving arm combined with an air cylinder and a cylindrical member. When the motor is electrified, the main and the subordinate gear are rotated, with the subordinate gear rotating the shaft, which then rotates the weight. The weight then rotates centrifugally to let a first end of the driving arm rotate and then the piston formed the second end of the driving arm is moved to reciprocate back and forth in the cylindrical member to produce compressed air to flow out for use.

1 . A driving device for an air compressor, said driving device comprising: 
 a base having a hole at a front-end, said hole having two bearings fitted therein, a shaft fitted through said two bearings;    a motor fixed at a rear side of said base, said motor having a spindle;    a main gear fixed on said spindle of said motor;    a subordinate gear fixed on a rear end of said shaft in said hole of said base and engaging with said main gear;    a weight of a preferably fan-shaped fixed on an outer end of said shaft;    a driving shaft having a first end combined eccentrically with said weight by means of a screw and having a hole at said first end, a bearing fitted in said hole, said driving shaft having a second end formed with a piston;    an air cylinder fixed laterally at a front end of said base and having a recess, an air outlet formed in said recess, a disc with a through hole and two gaskets sandwiching said disc fitted in said recess, a cylindrical member having one end fixed with said recess of said air cylinder and the other end connected with said base, said piston of said driving arm movably fitted in said cylindrical member; and,    said driving arm moved to reciprocate back and forth by said weight rotated by said main gear and said subordinate gear after said motor is powered to rotate said main gear, said piston of said driving arm thus moved to reciprocate in said cylindrical member so that air can be sucked in and compressed to be exhausted out of said air cylinder to produce compressed air for use.