Sealing plug

Abstract

A sealing plug for sealing an opening in a component has a substantially annular or cylindrical shank, the shank is closed by a sealing surface, and a sealing lip is provided on the shank and having a cone-shaped configuration. The sealing lip locks in place on the rear side of the component and closes the opening. The free edge of the first sealing lip is in contact with the rear side of the component in the assembled condition. The sealing lip has at least one flexible folding zone provided thereon which is reversibly foldable such that in a folded condition of the folding zone the circumference of the sealing lip is reduced in the area of the folding zone at least one of the edge and the sealing lip.

1 . A sealing plug for sealing an opening in a component, comprising a substantially annular or cylindrical shank, said shank is closed by a sealing surface, and a sealing lip provided on the shank and having a cone-shaped configuration, the sealing lip locking in place on the rear side of the component and closing the opening, the free edge of the first sealing lip being in contact with the rear side of the component in the assembled condition, wherein the sealing lip has at least one flexible folding zone provided thereon which is reversibly foldable such that in a folded condition of the folding zone the circumference of the sealing lip is reduced in the area of the folding zone at least one of the edge and the sealing lip. 
     
     
         2 . The sealing plug according to  claim 1 , wherein the folding zone can be folded inwards, in particular radially inwards, towards the longitudinal axis of the shank. 
     
     
         3 . The sealing plug according to  claim 1 , wherein the shank has at least one recess provided thereon into which the folding zone extends in the folded condition. 
     
     
         4 . The sealing plug according to  claim 1 , wherein in the region of the at least one folding zone, in particular at the at least one recess, the shank has at least one second folding zone provided thereon which can be folded inwards, in particular radially inwards, with the first folding zone. 
     
     
         5 . The sealing plug according to  claim 4 , wherein the first folding zone and the second folding zone are connected with each other, so that both folding zones are folded jointly. 
     
     
         6 . The sealing plug according to  claim 1 , wherein the folding zones are each formed by two folding surfaces which are configured substantially triangular or trapezoidal, the two folding surfaces each having a first edge by which they are flexibly connected with each other, and a second edge by which they are flexibly connected with the sealing lip. 
     
     
         7 . The sealing plug according to  claim 6 , wherein in a non-assembled condition the folding zones are pre-folded inwards. 
     
     
         8 . The sealing plug according to  claim 1 , wherein the sealing surface has at least one stiffening rib provided thereon which more particularly is U-shaped in cross-section and which more particularly is provided at the at least one recess or the at least one folding zone on the shank. 
     
     
         9 . The sealing plug according to  claim 8 , wherein the stiffening rib includes a receiving space into which the first folding zone and/or the second folding zone extend(s) in the folded condition. 
     
     
         10 . The sealing plug according to  claim 8 , wherein a centrally arranged pressure surface is provided and the at least one stiffening rib extends from the shank to the pressure surface. 
     
     
         11 . The sealing plug according to  claim 1 , wherein the sealing surface is convexly curved. 
     
     
         12 . The sealing plug according to  claim 1 , wherein a plurality of first folding zones and second folding zones are provided which more particularly are arranged so as to be uniformly distributed on the circumference of the sealing plug. 
     
     
         13 . The sealing plug according to  claim 1 , wherein a second sealing lip is provided which, in the assembled condition of the sealing plug, rests against the front side of the component and seals the opening.