Patent ID: 7815155
Filing Date: 2010-10-19
Classification: F16B

Abstract:
1. A suction device comprising: an upright sleeve having a looped surrounding wall formed with two aligned openings opposite to each other in a first direction; a flexible sucking disc 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; a connecting seat disposed in said sleeve, and having a base connected to said central portion of said sucking disc, a follower portion, and a through hole disposed between said base and said follower portion; and an elongate operating block mounted slidable on said sleeve, and having opposite first and second operating end portions extending respectively and outwardly of said sleeve through said openings in said looped surrounding wall, and an intermediate neck portion interconnecting said first and second operating end portions and extending through said through hole in said connecting seat, said intermediate neck portion being formed with a cam surface biased to contact said follower portion of said connecting seat, said cam surface having a first positioning portion, and a second positioning portion nearer to said base of said connecting seat than said first positioning portion; wherein said operating block is operable so as to move relative to said sleeve between a non-sucking position, where said follower portion of said connecting seat engages said second positioning portion of said cam surface of said intermediate neck portion of said operating block, and a sucking position, where said follower portion of said connecting seat engages said first positioning portion of said cam surface of said intermediate neck portion of said operating block such that said connecting seat is pushed by said intermediate neck portion of said operating block to move away from the supporting surface, thereby forming a vacant space between said central portion of said flexible sucking disc and the supporting surface.