Suction disc unit

• US 7,516,926 B2
• Filed: 06/16/2006
• Issued: 04/14/2009
• Est. Priority Date: 06/16/2006
• Status: Expired due to Fees

• Current Assignee: Comart Corporation
• Original Assignee: Comart Corporation
• Inventors: Liu, Su-Wei
• Primary Examiner(s): Shriver; J. Allen
• Assistant Examiner(s): EPPS, TODD MICHAEL
• Application Number:
  US11/453,817
• Publication Number:
  US 20070290105A1
• Time in Patent Office: 1,033 Days
• Field of Search: 248/205.5, 248/205.6, 248/205.7, 248/205.8, 248/683, 248/363, 248/206.1, 248/206.2, 248/309.3
• US Class Current: 248/205.5
• CPC Class Codes: F16B 47/006 the suction cups being activated by the rotation of a cranked lever arm

Abstract

A suction disc unit, especially a suction disc unit that can be adsorbed on a smooth surface to support a hung article, it comprises a pressing lid, a suction disc, a link and a pressing rod; wherein the pressing rod at least has a first eccentric protruding portion and a second eccentric protruding portion; when the pressing lid is pulled up to make abutment of the suction disc against the smooth surface by pushing of the pressing rod, the air in the gap between the suction disc and the smooth surface is removed as much as it can; when the pressing rod is pressed down, the pressing lid abuts against the periphery of the suction disc, and the central portion of the suction disc is pulled up tight, the air pressure in the gap is much lower than that of the atmosphere to thereby induce a strong suction force, and thereby to increase the bearing strength of the suction disc unit.

Claims

1. A suction disc unit for attaching a connecting member to a smooth surface, the unit comprising:

a) a pressing lid having an inner side and an outer side, the inner side defining a receiving space and the outer side including a connecting seat protruding from a surface of the pressing lid for supporting the connecting member;

b) a suction disc in the receiving space for engaging the smooth surface, the suction disc including a central link extending through and to the outside of the pressing lid;

c) a stopper on the outer side of the pressing lid, the stopper being integrally formed with the connecting seat and including a lower end, wherein the stopper protrudes from an outer surface of the connecting seat at a position spaced from the pressing lid;

d) the pressing lid further including a pressing rod having a pressing end and a connecting end, the connecting end being pivotally connected to the central link for permitting the pressing end to be pivoted between a first position and a second position;

e) the connecting end including a first eccentric portion and a second eccentric portion adjacent thereto, the second eccentric portion being disposed beneath the stopper for engaging the lower end thereof;

f) the first eccentric portion engaging the pressing lid against the suction disc and moving the central link away from the smooth surface for creating suction between the suction disc and the smooth surface when the pressing end is pivoted into the first position; and

g) the second eccentric portion engaging the lower end of the stopper and moving the central link towards the smooth surface to release the pressing lid from the suction disc for reducing the amount of air between the suction disc and the smooth surface when the pressing end is pivoted into the second position.

2. The suction disc unit of claim 1, wherein the suction disc is integrally formed with the central link.

3. The suction unit of claim 1, wherein the pressing end is in the form of a hanging member.

4. The suction unit of claim 1, wherein the first and second eccentric portions are in the form of a twin cam.