FR2638416A1 - - Google Patents

Abstract

The present invention relates to an anti-projection screen for a motor vehicle, of the type comprising a panel 2 bordered at its periphery with a projection 3 on at least one face 4, which can be placed behind the wheel of the motor vehicle. This screen is characterized in that the face 4 of the panel 2 is provided with small projecting elements 9, superimposed on each other, being substantially equidistant, along vertical columns substantially equidistant, so as to create vertical discharge channels 10 and transverse 11, substantially over the entire width of the panel 2, these small projecting elements 9 having an elongated shape in the vertical direction, substantially flat, so as to have a horizontal dimension less than that of their development in the vertical direction.

Description

The present invention relates to an anti-spray screen for vehicles

  which is intended to discharge vertically downwards, behind the wheels of the vehicle which are equipped with them, all the water and mud lifted by these wheels, thus avoiding the effects

nebulization.

  Various types of anti-spray screens having structures for channeling water and mud by means of ribs and / or grooves, extending laterally and downwardly, inside and outside, are already known in practice.

  the exterior of a motor vehicle.

  In order to improve the discharge effect of the water and the mud raised by the wheels of a motor vehicle to the ground, anti-projection screens have already been produced which make it possible to obtain the discharge directly behind the vehicle.

corresponding wheel.

  A first type of such anti-projection screens, for discharging water and sludge directly behind the corresponding wheel, comprises, on the face of the body or the sheet of the anti-projection screen which is turned towards the corresponding wheel, two series of ribs superimposed vertically, spaced from each other by being symmetrical with respect to a vertical plane, in the form of fishbones, so as to create a vertical channel

median landfill.

  A second type of such anti-projection screens for discharging water and sludge directly behind the corresponding wheel has a surface of the body or sheet of the anti-projection screen, facing the wheel, which has a structure in the form of hairbrush

  sometimes deliberately confused.

  In the first case the voluntarily created landfill is limited, as previously indicated, to a median vertical channel, whereas in the second case, that of a surface having the structure of a bristle brush more or less deliberately scrambled, there is the disadvantage of a saturation, by the mud, of the interstices between the bristles, which then reduces the effect of discharge to that which is obtained with the screens primitive anti-projection with a smooth surface, ie a lateral discharge with projections thus canceling the desired effect of

earth behind the wheel.

  The main object of the present invention is therefore to provide an anti-projection screen for a motor vehicle having a structure for discharging the water and the sludge behind the corresponding wheel,

practically over its entire width.

  Another object of the invention is to provide a vehicle anti-projection screen which is particularly effective for achieving the above stated purpose, and which requires no intervention because it is virtually self-cleaning. Another object of the invention is to provide an anti-projection screen satisfying the aforementioned aims and of a particularly low cost taking into account the results obtained in

practice with this screen.

  For this purpose this anti-projection screen for a motor vehicle, of the type comprising a panel of plastic or thermoformed rubber, bordered at its periphery with a projection on at least one face, which can be placed behind the wheel of the motor vehicle, this with the edge facing towards a corresponding wheel and the part of the projecting edge situated on the lower side having a discontinuous shape, is characterized in that the face of the peripheral edge panel is provided with small projecting elements superimposed on each other. other, being substantially equidistant, along substantially equidistant vertical columns, so as to create vertical and transverse discharge channels, substantially over the entire width of the panel, these small projecting elements having an elongated shape in the vertical direction, substantially planar , so as to have a smaller horizontal dimension than their devel oppement in the

vertical direction.

  The following will be described by way of non-limiting examples, various embodiments of the present invention, with reference to the accompanying drawing in which: Figure 1 is a partial perspective view of the rear part of a motor vehicle on which is

  mounted the anti-projection screen according to the invention.

  FIG. 2 is a front elevational view of the active surface of a part of the following anti-projection screen

  the invention, according to a first preferred embodiment.

  Figure 2A is an elevational view similar to that of Figure 2 and shows the anti-projection screen according to the invention, according to a second preferred embodiment. Figures 3 and 4 are sectional views, on a larger scale, of parts of the anti-projection screen according to the invention, these sectional views being taken respectively

  in the directions of the arrows A and B in FIG.

  FIGS. 5 and 5A are perspective views, on a larger scale, of parts of the anti-projection screen according to the embodiments respectively represented

in Figures 2 and 2A.

  As indicated above, the anti-projection screen for motor vehicles according to the invention, which is indicated as a whole by reference numeral 1 in FIGS. 1 and 2, is of the type comprising a panel 2 of plastic material or thermoformed rubber, bordered at the periphery of a rib or projection 3 on at least one of its faces 4. This anti-projection screen can be fixed, in the usual manner, by its upper edge 5, to the structure of the motor vehicle 6, back of the wheel of this vehicle itself, its face 4 having the edge 3 being turned towards a corresponding wheel (see Figure 1). The projecting edge 3 on the lower side has a discontinuous shape, as indicated at 8 (see Figure 2) for the discharge, downwards, of water or water.

  mud did not form a fog.

  According to the present invention the face 4 which is surrounded at the periphery of the edge 3, is provided, by forming, small projecting elements 9, extending from the same face 4 while being superposed, equidistantly one another. the others, along substantially equidistant vertical columns, to create vertical and transverse discharge channels 11 communicating with each other, as can be seen in part 12 of FIG. 2, and this practically over the entire width of the panel 2. These small projecting elements 9 are provided with an elongated shape in the vertical direction, substantially flat, and preferably, as can be seen better in FIG. 5, they have a shape substantially

  pyramidal with rounded outer surface.

  In a preferred embodiment of the small pyramidal elements 9 with a rounded outer surface, these are arranged in contiguous columns arranged side by side to form, in addition to vertical channels 10 communicating with each other, transverse channels 11 extending

  horizontally (see Figures 2 and 5).

  The second embodiment shown in Figures 2A and 5A, in which the same parts or parts equivalent to those of the preferred embodiment, described above with reference to Figures 2 and 5, are indicated by the same reference numerals. but, however, with the addition of the letter a, differs from the latter in that the pyramidal elements 9a with rounded outer surfaces are arranged in contiguous but staggered columns to create, in addition to vertical channels 10a communicating with each other, channels transverse lla extending in a transverse inclination towards

bottom (see Figures 2A and 5A).

  In practice it has been found that the best functional effects of the small projecting elements 9,9a of pyramidal shape and with rounded outer surface have been obtained with columns of these elements situated at a horizontal distance X of 3.2 mm from each other , a distance Y between the superimposed elements in the same column of 4.5 mm, a base dimension V, Vl of 3.5 x 2.2 mm, an apex dimension W, W1 of 2.3 x 1 mm , a connection fillet R at the edges of 0.5 mm, an inclination of the outer surface S of 5e and a height H of 7 mm. From experimental tests carried out, it has been found that the best functional effects are due to the very fine fractionation of the water and the sludge during their impact against the face 4 of the panel 2 constituting the anti-projection screen 1 according to the invention. which is provided with the pyramidal elements 9.9a arranged to form the vertical 10,10a and transverse channels 11, 11a communicating with each other, so as to establish a rapid flow of land and water discharge of the mud back wheels that raised this water and sludge during the running of the motor vehicle, thus avoiding the effects of

fog formation.

Claims (6)

  1.- anti-projection screen for a motor vehicle, of the type comprising a panel (2) of plastic or thermoformed rubber, bordered at its periphery with a projection (3) on at least one face (4), which can be placed behind of the wheel of the motor vehicle, this face (4) with an edge (3) being turned towards a corresponding wheel and the portion (8) of the edge (3) projecting on the lower side having a discontinuous shape, characterized in that the face (4) of the peripheral edge panel (2) is provided with small protruding elements (9, 9a) superimposed on each other, being substantially equidistant, along substantially equidistant vertical columns, so as to creating vertical (10,10a) and transverse (1,11a) discharge channels, substantially over the entire width of the panel (2), these small protruding elements (9,9a) having a vertically elongated shape, substantially flat, so as to have a e horizontal dimension smaller than   of their development in the vertical direction.   2. Anti-projection screen according to claim 1 characterized in that the small projecting elements (9,9a), elongate in the vertical direction and substantially   flat, have a rounded outer surface.   3.- Anti-projection screen according to any one of   Claims 1 and 2 characterized. in that the little ones   protruding elements (9,9a), of elongated shape in the vertical direction and substantially flat, with rounded external surface, are arranged in contiguous columns and are placed   next to each other while being aligned transversely.   4.- Anti-projection screen according to any one of   claims 1 and 2 characterized in that the small   protruding elements (9,9a), of elongated shape in the vertical direction and substantially flat, with rounded external surface, are arranged in contiguous columns and are placed   next to each other in staggered rows.   5.- Anti-projection screen according to any one of   preceding claims characterized in that the small   protruding elements (9, 9a) of elongate shape in the vertical direction and substantially flat, with rounded outer surface,   have a pyramidal shape with rounded edges.   6. Anti-projection screen according to claim 5 characterized in that the small projecting elements (9,9a) of pyramidal shape and rounded edges are arranged in columns located at a distance X of 3.2 mm from each other, the distance Y between the superimposed elements in the same column is 4.5 mm, the base dimension V, V1 of these elements is 3.5 x 2.2 mm, the dimension at the top W, W1 of the elements is 2.3 x 1 mm, the connection fillet R at the edge of the edges is 0.5 mm, the inclination of their   outer surface S is 5 and their height H is 7 mm.