Patent ID: 7784372

Claim:
A driving mechanism, comprising: a housing; a driven gear rotatably mounted in the housing; a driven shaft secured to a first side of the driven gear to rotate with the driven gear simultaneously; an adjusting shaft mounted on a second side of the driven gear to rotate with the driven gear; wherein the second side of the driven gear is formed with a mounting recess for mounting the adjusting shaft; the mounting recess of the driven gear has a circular shape and a peripheral wall formed with a substantially arc-shaped protruding push portion, the push portion of the driven gear extends radially and inwardly from the peripheral wall of the mounting recess, and the push portion of the driven gear extends into the mounting recess of the driven gear; the adjusting shaft has a first side formed with a substantially arc-shaped driven portion inserted into and mounted in the mounting recess of the driven gear and a substantially arc-shaped guide slot to receive the push portion of the driven gear so that the push portion of the driven gear is rotatable in the guide slot of the adjusting shaft; the push portion of the driven gear has a first end and a second end; the driven portion of the adjusting shaft has a first end rested on the first end of the push portion of the driven gear and a second end spaced from the second end of the push portion of the driven gear; the driven gear is rotatable relative to the adjusting shaft to drive and rotate the adjusting shaft; the push portion of the driven gear is rotatable relative to the driven portion of the adjusting shaft to abut and push the driven portion of the adjusting shaft.