Patent ID: 8161989

Claim:
A control structure, adapted to be mounted in a handle of a self-opening/closing umbrella and to be coupled to a lower end of a first shaft segment of a central shaft unit of the umbrella, comprising: a main body; a control loop in a hollow space in an upper portion of the main body; a control bar pivotally mounted on a first side of an inner surface of the control loop, wherein the control bar is used to trigger to close the umbrella in an open condition; a pushbutton withholding the control loop; a tongue formed on a second side of the inner surface of the control loop, wherein the second side is opposite to the first side, wherein the tongue withholds an inner surface of an opening in a runner of the umbrella when the umbrella is in a closed condition; a reversal prevention wheel rotatably supported in a hollow space in a lower portion of the main body, the reversal prevention wheel having a circumference that includes a toothed surface; a rope extending through the main body and having an end fixed to the reversal prevention wheel and an opposite end attached to a crown of the umbrella, wherein the rope has a portion wound around the reversal prevention wheel when the umbrella is in the closed condition; a locking member rotatably supported in a hollow space in the main body and over the reversal prevention wheel, wherein the locking member has a pawl bar contacting the toothed surface of the reversal prevention wheel when the umbrella is being closed, and an operation bar pressed so as to have the pawl bar kept away from the toothed surface of the reversal prevention wheel when the umbrella is being opened; a bullet-head member contacting a curved recess at an inclined surface of the operation bar of the locking member when the umbrella is being opened; a spring plate in the central shaft unit, wherein the spring plate contacts the operation bar of the locking member; and a spring between the pawl bar and the central shaft unit, wherein the spring provides a force to the locking member such that the pawl bar contacts the toothed surface of the reversal prevention wheel when the umbrella is being closed.