Patent ID: 7168438

Claim:
A control device for automatically opening and closing an umbrella comprising a handle, a lower tube, a control member, a press plate, a bullet head, an upper tube, and a push button, wherein: the handle has a peripheral wall formed with a through hole; the lower tube is mounted in the handle and has a peripheral wall formed with a through hole aligning with the through hole of the handle; the control member is mounted in the lower tube and has an inside formed with a chamber having a peripheral wall formed with a locking hole aligning with the through hole of the lower tube; the bullet head is movably mounted in the control member and the lower tube and has a lower end formed with a locking portion detachably locked in the locking hole of the chamber of the control member; the upper tube is movably mounted on the lower tube and has a lower end aligning with the locking hole of the chamber of the control member; the press plate is pivotally mounted on the control member and has a first end protruded outward from the through hole of the lower tube, with the press plate rested on the lower end of the upper tube, with the press plate pushing on the lower end of the bullet head formed with the locking portion; a first elastic plate and a second elastic plate mounted in the chamber of the control member, with the second elastic plate being urged on the first end of the press plate to push the first end of the press plate upward toward the lower end of the upper tube and the locking portion of the bullet head; and the push button is movably mounted on the handle and has an inner wall formed with a push block rested on the first end of the press plate, wherein the press plate has a second end pivotally mounted to the control member in the chamber of the control member by a pivot shaft.