Ventilation opening for an aeration system

Abstract

A ventilation opening for an aeration system, in particular of the air admission opening type, of the type comprising a body delimiting an air conveying duct and a flap pivotally mounted on the front facade of the body between a closed position and an open position, and further comprising a system for blocking the flap in the open position and in the closed position, comprising an elastically deformable locking blade that is fastened to the flap and provided with at least two stops and a stopping device incorporated to the front facade of the body and presenting at least two bearing elements, where the locking blade cooperates with a stopping device so that the flap passes from a closed position, wherein a stop of the locking blade bears against a bearing element, to an open position, wherein another stop of the locking blade bears against another bearing element, by initially pushing the flap against the front facade and then by spacing apart the cover from the front facade, and the flap passes from the open position to the closed position by pushing the flap against the front facade.

1 . A ventilation opening for an aeration system, in particular of the air admission opening type, of the type comprising:
 a body delimiting an air conveying duct presenting an aperture opening out on a front facade of said body; and   a flap pivotally mounted on the front facade of said body between a closed position of obstruction of the aperture wherein the flap is folded back against the front facade and covers the aperture, and an open position wherein the flap is spaced apart from the front facade to allow the passage of air through the aperture;   
       said opening being wherein it further comprises a system for blocking the flap in the open position and in the closed position, comprising an elastically deformable blade called locking blade that is fastened to the flap and provided with at least two stops and a stopping device incorporated to the front facade of the body and presenting at least two bearing elements, where the locking blade cooperates with a stopping device so that the flap passes from a closed position, wherein a stop of the locking blade bears against a bearing element, to an open position, wherein another stop of the locking blade bears against another bearing element, by initially pushing the flap against the front facade and then by spacing apart the flap of the front facade, and the flap ( 4 ) passes from the open position to the closed position by pushing the flap against the front facade. 
     
     
         2 . The ventilation opening according to  claim 1 , wherein the locking blade protrudes from an inner face of the flap and presents at least two stops including a proximal stop and a distal stop, the proximal stop being closer to the inner face of the flap than the distal stop. 
     
     
         3 . The ventilation opening according to  claim 2 , wherein the stopping device presents at least two bearing elements, including a first bearing element and a second bearing element. 
     
     
         4 . The ventilation opening according to  claim 2 , wherein:
 in the closed position, the proximal stop of the locking blade bears against the first bearing element and the locking blade is in an elastically deformed state; and   in the open position, the distal stop bears against the second bearing element and the locking blade is in a free state;   
       where the flap passes from the closed position to the open position by pushing the flap against the front facade so that the proximal stop of the locking blade leaves its bearing against the first bearing element and recovers its free state, then discarding the flap of the front facade of the body until the distal stop comes to bear against the second bearing element; 
       and where the flap passes from the open position to the closed position by pushing the flap against the front facade so that the distal stop leaves its bearing against the second bearing element, and the proximal stop of the locking blade comes into contact with the first bearing element and the locking blade is deformed until said proximal stop repositions to bear against the first bearing element. 
     
     
         5 . The ventilation opening according to  claim 2 , wherein the locking blade presents a general “U” shape presenting two branches linked by a bend, including a main branch protruding from the inner face of the flap and a secondary branch forming a return, and the proximal stop is provided on one of the two branches and the distal stop is provided on the other one of the two branches, the distal stop being closer to the bend than the proximal stop. 
     
     
         6 . The ventilation opening according to  claim 5 , wherein the proximal stop is provided on the secondary branch, in particular at its free end, and the distal stop is provided on the main branch. 
     
     
         7 . The ventilation opening according to  claim 1 , wherein the locking blade presents a predefined width called main width and the stops are in the form of enlarged elements integral with the locking blade and each presenting a width called secondary width greater than the main width. 
     
     
         8 . The ventilation opening according to  claim 3 , wherein the first bearing element is offset relative to the second bearing element in the plane of the front facade of the body. 
     
     
         9 . The ventilation opening according to  claim 8 , wherein the stopping device includes a frame delimited by two opposite facing edges, and the first bearing element is composed of at least a first protuberance protruding from one of said edges inwardly of the frame and the second bearing element is composed of at least one second protuberance protruding from the same edge as the first protuberance inwardly of the frame, the two protuberances being shifted with respect to one another along said edge, and the locking blade cooperates with the stopping device engaging within said frame. 
     
     
         10 . The ventilation opening according to  claim 9 , wherein the first bearing element is composed of two facing first protuberances protruding from the respective edges of the frame inwardly of the frame, and the second bearing element is composed of two facing second protuberances protruding from the respective edges inwardly of the frame. 
     
     
         11 . The ventilation opening according to  claim 7 , wherein:
 the gap between the two first protuberances is substantially equivalent to the gap between the two second protuberances and this gap is, on the one hand, substantially equivalent to or greater than the main width of the locking blade and, on the other hand, smaller than secondary width of the stops; and   the gap (E1) between the two edges of the frame is substantially equivalent to or greater than the secondary width (LS) of the stops.   
     
     
         12 . The ventilation opening according to  claim 3 , wherein the first bearing element presents a front surface, situated opposite the flap, which forms a ramp inclined with respect to the front facade at a non-right and non-zero angle, so that the proximal stop is guided over this ramp when the flap ( 4 ) passes from the open position to the closed position. 
     
     
         13 . The ventilation opening according to  claim 3 , wherein the first bearing element presents a rear surface, facing the flap, which forms a stair defining a bearing plate for the proximal stop in the closed position. 
     
     
         14 . The ventilation opening according to  claim 1 , comprising at least one resilient recall member interposed between the front facade of the body and an inner face of the flap and biasing said flap to its open position. 
     
     
         15 . The ventilation opening according to  claim 14 , wherein the recall member and the locking blade are integral, in particular by being carried out in one-piece. 
     
     
         16 . The ventilation opening according to  claim 14 , wherein the recall member includes an elastically deformable blade called recall blade presenting an end fastened to the inner face of the steering wheel a lower end trapped between two stopping surfaces of the front facade. 
     
     
         17 . The ventilation opening according to  claim 1 , wherein the flap is a solid flap, non-perforated and pivotally mounted on the front facade of the body, according to a pivot axis substantially parallel to the front facade. 
     
     
         18 . The ventilation opening according to  claim 17 , wherein the flap is pivotally mounted on the front facade of the body by means of one or several male plugs protruding from one of the inner face of the flap and the front facade, the or each male plug being engaged in a groove provided on the other inner face of the flap and the front facade. 
     
     
         19 . The ventilation opening according to  claim 1 , wherein the inner face of the flap is partially covered by a layer of compressible material, in particular with foam, which compresses under the effect of the initial pushing of the flap when it passes from the closed position to the open position. 
     
     
         20 . The ventilation opening according to  claim 1 , wherein the stopping device is placed on the inner or outer periphery of the aperture of the duct opening out on the front facade, this aperture being optionally filled with a filter which does not cover the stopping device.