Patent ID: 7476991

Claim:
A linear electromagnetic driving module comprising: a base having two pivot brackets mounted on the base; an electromagnetic driving assembly mounted on the base behind the pivot bracket and having a housing mounted on the base and having a front, a rear, two sides, a cavity defined in the housing and a rail channel defined through the housing and having a front opening and a rear opening; a coil mounted in the cavity around the rail channel; and a linear magnetic shaft made of magnetic material mounted at the front opening of the rail channel, being capable of moving linearly in the rail channel and having, a rear end and a slide plate mounted on the rear end and extending through a rear opening of the rail channel; and a crankshaft assembly mounted on the base, connected to the linear magnetic shaft and having a pair of crank disks being mounted between the two pivot brackets, each crank disk mounted rotatably on one of the pivot brackets, and each crank disk having an eccentric pivot hole; a pair of pivot output shafts attached respectively to the crank disks, being rotatably mounted respectively through the pivot brackets; a crank arm connecting between the crank disk and the linear magnetic shaft and having a front end mounted on the eccentric pivot pin of the crank disks and a rear end mounted pivotally on the front end of the linear magnetic shaft; and an eccentric pivot pin being mounted in the eccentric pivot holes on the crank disks, extending rotatably through the front end of the crank arm.