Patent ID: 7658354
Filing Date: 2010-02-09
Classification: F16B

Abstract:
1. A suction device comprising: an upright sleeve having an annular surrounding wall formed with two aligned through 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 to said central portion of said disc body and extending upwardly into said sleeve; a connecting member disposed in said sleeve, and having a lower end 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, an upper end portion, and a cam-accommodating space defined between said lower end portion and said upper end portion; a cam body disposed rotatably in said cam-accommodating space in said connecting member and having an axial hole; a pivot rod extending through said through holes in said annular surrounding wall of said sleeve and pivotable relative to said sleeve about a central axis thereof, said pivot rod having two opposite ends extending outwardly from said sleeve, and a central rod portion extending through and engaging said axial hole in said cam body such that said cam body is pivotable together with said pivot rod; and an operating member disposed outwardly of said sleeve and connected to at least one of said ends of said pivot rod; wherein said operating member is operable so as to pivot an assembly of said pivot rod and said cam body relative to said sleeve such that an assembly of said connecting member and said connecting body of said sucking member is pushed by said cam body to move upwardly away from the supporting surface, thereby forming a vacant space between said central portion of said disc body of said sucking member and the supporting surface; and wherein said connecting member is a generally inverted U-shaped plate that has opposite lateral plate portions connected respectively to opposite sides of said connecting body of said sucking member, and an intermediate plate portion interconnecting said lateral plate portions, cooperating with said lateral plate portions to define said cam-accommodating space, and abutting against said cam body when said vacant space is formed.