FR2576851A1 - VENTILATION BOX FOR MOTOR VEHICLES - Google Patents

Abstract

VENTILATION BOX FOR MOTOR VEHICLES, MOUNTED HIDDEN BEHIND THE SIDE PARTS OF THE BUMPER, AND PRESENTING A MAIN BODY 4 IN ELASTIC MATERIAL THAT CAN BE CLIPPED IN AN OPENING 2 PRACTICED IN THE WING 1, ON WHICH IS MOUNTED A FLAP 10. THIS BOX INCLUDES, IN THE FORM OF A PIECE WITH THE MAIN BODY 4, A DEFLECTOR APRON 12 WHICH SURROUND THE FRONT AND BOTTOM OF THE AREA NEAR THE VENTILATION OPENING 9 AND WHOSE FLEXIBLE LIPS 13 ARE TIGHTLY WIDENED. INTERIOR SURFACES OF PART OF THE BUMPER 11 LOCATED IN FRONT OF IT.

Description

l -2576851 The present invention relates to an aeration boot for

  motor vehicles, mounted hidden behind side parts of bumper, and having a main body of elastic material, juuvant to be clipped into an opening of the wing, 9lquel which is formed in one piece a cover and in which

a diaphragm flap is mounted.

  By German patent DE-PS-26.03.297, onnact a passenger car interior ventilation for which an ventilation opening is mounted hidden behind the side parts of the bumper, and protected at its upper part by a cover against splashing water. A similar ventilation of the passenger compartment is also known, for which the ventilation opening is coated with a ventilation box made of material.

  elastic comprising a cover formed in one piece.

  This known configuration of a ventilation opening and a casing covering this ventilation opening has the drawback that the ventilation opening 0 dizecte get in particular the fragile diaphragm flap does not feel protected from below against Jes splashing water or against the ingress of soiling, which can lead to difficulties, especially in the case of a vehicle in which the rear overhang is short and where the ventilation opening is in the immediate vicinity

rear wheels.

  The present invention proposes to purify a ventilation boot of the known type: so that On the one hand there is protection against rain water or dirty water projected Far the driving wheels and d Another art, a better variation of a pressure difference in the area of the opening of aeration. According to the invention, the shoemaker comprises a deflector apron formed of a piece with the main body, which surrounds the front part and bottom of the area adjacent to the ventilation opening and whose flexible lips seal the interior surfaces of the bumper part

which is in front of him.

  This deflector apron being formed in one piece with the main body and its flexible lips conforming to the internal surfaces of the bumper located in front of it, while surrounding the anterior and lower part of the area near the ventilation opening, reliable protection against water or dirt projected by the drive wheels is provided on the one hand, and the pressure in the region of the ventilation opening on the other hand varies as desired so that 'there is

  permanently a depression in this area.

  An embodiment of the invention is described in more detail below with reference to the accompanying drawings in which: FIG. 1 is a side view of an aeration boot - according to the invention, the bumper being dismantled , and Figure 2 is a vertical section along line IIII of Figure 1, the bumper being

shown in dotted lines.

  In FIG. 1, a wing 1 has a ventilation opening 2 with a regular edge folded down all along, in which a ventilation boot 3 of elastic material is clipped in a known manner. The ventilation boot 3 made of elastic material essentially comprises a main body 4 o Fart to the rear a bulged edge 5 making all the round, with edges

  notched 6 and forward a cover 7 formed in one piece.

  The main body 4 has a ventilation opening 9 divided Far from the crosspieces 8 and covered Far a diaphragm flap 10. The diaphragm flap 10 maintained

3 2576851

  in known manner, is so fine and flexible, that it opens in the event of internal pressure in the passenger compartment and vacuum on the outside, while it closes when the Fression conditions are reversed, to prevent dust or exhaust fumes

  do not get inside the vehicle.

  As shown in Figure 2, the arrangement of the ventilation box 3 is such that it is hidden by the side parts of the bumper 11 shown

in Finced.

  Motor vehicles with short overhangs of the rear bodywork have been found to be short, and the water and dirt projected Far the wheels reach the area of the ventilation box 3 and thus hamper the operation of the flap. diaphragm by fouling. In addition, it could happen that in the event of poor flow conditions, the desired vacuum in the area of the ventilation box

  3 was neither constant nor significant enough.

  Consequently, according to the invention, the front and lower part of the area adjacent to the ventilation opening 2 is surrounded by a deflector apron 12 shaped in one piece with the main body 4 of the ventilation box 3, and whose flexible lips 13 closely seal the interior surfaces of the bumper

11 located in front of this apron.

Claims (1)

CLAIM   1. Ventilation valve (3) Four motor vehicles mounted hidden behind lateral bumper parts and having a main body (4) of elastic material which can be cliFsed in an opening (2) in the wing, on which is formed in one piece a cover and in which is mounted a diaphragm flap (10), characterized in that it comprises a deflector apron (12), formed in one piece with the body pFrinciFal (4), which surrounds the anterior and lower wax of the area near the ventilation opening (9) and whose flexible lips (13) hug the interior surfaces of the Farechocs wax (11) which is before him.