Patent ID: 8261760

Claim:
Control device adapted for collapsible umbrella including: a base; a buckle removably inserted into said base; a controlling device, controlled by said buckle, mounted fixedly on a higher portion of said base, a spool disk, longitudinally rotated along with said base being positioned on an inferior portion of said base; a plurality of ratchets defined on a peripheral wall of said spool disk and said peripheral wall embraced by a spool groove; one end of a spiral spring fixed on said base, and the other end thereof fixed on said spool disk, for generating an elastic driving force to drive said spool disk; a shift block disposed on said base disposed below said controlling device; wherein, said shift block being controlled by a torsion spring for continuously possessing a torsion to contact said spool disk and to engage with said ratchets of said spool disk; one end of a disk cord fixed on said spool disk and wound around said spool groove of said spool disk, and the other end thereof passing through said controlling device and said base for being connected to an upper accommodation of said umbrella; when the umbrella is opened up: a top portion of a support, upon which a controller of said controlling device is mounted, is not inserted into the base, and a lower free end of said shift block contacts the peripheral wall of the spool disk for engaging said ratchets thereon for restricting rotation of the spool disk; and when the umbrella is folded down: the support is inserted into the base; the buckle penetrates through a top part of a hollow pipe of the controller, and a lower tip of a needle enters downwards into the hollow pipe of the controller until the needle props against a crest of a rear body of an inner part, thereby, the inner part moves downwards for pressing an upper free end of said shift block for moving downwards; the lower free end of said shift block is, by leverage, raised for departing from the ratchets on the peripheral wall of the spool disk, and the spool disk rotates round the spindle via the spiral spring for the disk cord to wind around the spool groove of the spool disk.