Patent ID: 7299722

Claim:
An adjustable wrench for quickly adjusting the width of a jaw, comprising: a stationary body having a chamber at an upper portion thereof; a movable body having a worm at a lower portion thereof, being movable transversely inside the chamber; a driving mechanism located within the chamber, including: a worm gear with a worm gear shaft, engaging the worm, a first gear mounted at an end of the worm gear shaft of the worm gear, a connection shaft located under the worm gear shaft in parallel, and a second gear mounted at an end of the connection shaft to engage with the first gear; and a traction mechanism connected to the connection shaft, wherein the traction mechanism drives the second gear to rotate by driving the connection shaft, which drives the first gear to rotate, thereby rendering the worm to move inside the chamber, and wherein the driving mechanism further includes two joint flakes for integrating the worm gear and the driving mechanism and holes provided in corresponding positions of each of the joint flakes, respectively, so that both ends of the worm gear shaft and those of the connection shaft can be rotatably installed in the holes.