Patent attributes
The invention relates to a suction cup (10) for detachable fastening to a substrate (12), the suction cup (10) comprising a supple sealing material (26) for applying to the substrate (12) and an elastically deformable actuating part for pressing against the substrate (12), and uses elastic recovery of the actuating part to produce a vacuum between the suction cup (10) and the substrate (12). The aim of the invention is to be able to produce the suction cup (10) very inexpensively, with an aesthetically pleasing appearance, a very low thickness, and good adhesion even on less than smooth substrates. To this end, the actuating part comprises a snap-action disk (20), the front or visible side (22) thereof facing away from the sealing material (26) being at least partially convexly domed in a stable idle state, and the snap-action disk being at least partially deformable into a metastable or unstable deformation state in which the front or visible side (22) is at least partially concavely domed, by means of a compressive force exerted on the front or visible side (22), and automatically returning back to its original shape in the direction of the idle state when the compressive force is released.
