Patent ID: 7731139

Claim:
A suction device comprising; an upright sleeve extending in a longitudinal direction and having a through hole unit and an annular outer surface formed with a pivot block unit that is disposed adjacent to said through hole unit, said though hole unit including diametrically opposed though holes, said pivot block unit of said sleeve including two pivot blocks disposed respectively adjacent to said though holes; a sucking member having a flexible disc body disposed under said sleeve and having a peripheral portion that is adapted to be attached sealingly to a supporting surface and that abuts against said sleeve, and a central portion connected integrally to said peripheral portion and adapted to be spaced apart from the supporting surface, and a connecting body connected integrally to said central portion of said disc body and extending upwardly into said sleeve; a connecting member disposed in said sleeve and having a first connecting portion connected to said connecting body of said sucking member so as to allow synchronous movement of said connecting member and said connecting body of said sucking member, and a second connecting portion opposite to said first connecting portion in the longitudinal direction, said connecting member being a U-shaped rod having parallel vertical rod bodies, each of said vertical rod bodies having opposite upper and lower ends, and a horizontal rod body interconnecting said lower ends of said vertical rod bodies and extending through said connecting body of said sucking member, said horizontal rod body constituting said first connecting portion of said connecting member, said upper ends of said vertical rod bodies constituting said second connecting portion of said connecting member; and an operating rod unit including a pair of operating rods, each of said pair of operating rods having a pivot end portion extending into said sleeve through a corresponding one of said through holes of said through hole unit in said sleeve and connected pivotally to a corresponding one of said upper ends of said vertical rod bodies of said U-shaped rod, an operating end portion opposite to said pivot end portion, and an intermediate fulcrum portion interconnecting said pivot end portion and said operating end portion, and connected pivotally to a corresponding one of said pivot blocks of said pivot block unit; wherein said operating end portions of said operating rods of said operating rod unit are operable so as to pivot said pivot end portions of said operating rods of said operating rod unit upwardly such that an assembly of said connecting member and said connecting body of said sucking member is pulled upwardly, thereby forming a vacant space between said central portion of said disc body of said sucking member and the supporting surface.