Retaining plate with centering device

Abstract

The invention relates to a retainer plate for a vacuum cleaner filter bag, comprising at least one sealing element, a base plate in which a passage opening is formed, and a centering device which extends at least partly around the periphery of the passage opening, said centering device having at least one first spring element which, upon deformation in the radial direction, exerts a restoring force directed counter to the deformation.

1 . A retaining plate for a vacuum cleaner filter bag, comprising:
 a sealing element;   a base plate in which a passage opening is formed; and   a centering device which extends at least partially along the circumference of the passage opening,   wherein the centering device comprises at least one first spring element which, when deformed in a radial direction, exerts a restoring force opposing the deformation.   
     
     
         2 . The retaining plate according to  claim 1 , wherein the at least one spring element is formed from a deformed region of the retaining plate. 
     
     
         3 . The retaining plate according to  claim 2 , wherein the deformed region is wave-shaped. 
     
     
         4 . The retaining plate according to  claim 3 , wherein the deformed region comprises one or more waves arranged concentrically with respect to the passage opening. 
     
     
         5 . The retaining plate according to  claim 1 , wherein the centering device is a diaphragm spring. 
     
     
         6 . The retaining plate according to  claim 1 , wherein the centering device is formed integrally with the base plate. 
     
     
         7 . The retaining plate according to  claim 1 , wherein the retaining plate has at least one radial recess in the region of the centering device. 
     
     
         8 . The retaining plate according to  claim 1 ,
 wherein the centering device further comprises at least one second spring element;   wherein the at least one second spring element, when deformed in the radial direction, exerts a restoring force opposing the deformation; and   wherein the arrangement of the at least one first and second spring elements has no rotational symmetry with respect to the passage opening.   
     
     
         9 . The retaining plate according to  claim 1 , comprising a thermoplastic and/or a recycled plastic 
     
     
         10 . The retaining plate according to  claim 9 , wherein the retaining plate is thermoformed, a deep-drawn part or an injection-molded part. 
     
     
         11 . The retaining cleaner filter bag comprising a retaining plate according to  claim 1 . 
     
     
         12 . A vacuum cleaner filter bag comprising:
 at least one sealing element; and   a retaining plate, wherein the retaining plate comprises:
 a base plate in which a passage opening is formed; and 
 a centering device which extends at least partially along the circumference of the passage opening, 
 wherein the centering device comprises at least one first spring element which, when deformed in a radial direction, exerts a restoring force opposing the deformation. 
   
     
     
         13 . The vacuum cleaner filter bag according to  claim 12 , wherein the at least one sealing element is provided in the bag and/or between the bag and the retaining plate. 
     
     
         14 . The vacuum cleaner filter bag according to  claim 12 , wherein the at least one sealing element consists of rubber, TPE, or the material of the vacuum cleaner filter bag.