DE2025519A1 - Dirt deflector - Google Patents

Description

Paul Munderich 646i Rothenbergen

Frankfurter Strafe 84 authorized by agency

Patent engineer phone ooosi / 3703

Patent grant 1 and

Utility model auxiliary registration

for mr

Rupprecht Graf
Dipl. Ing.

Büdingen
Lower bezels 13

¹ dirt deflector "

109850/0559

The invention relates to a dirt deflector for vehicles, in particular motor vehicles.

Known mud flaps usually consist of a smooth or profiled flap made of rubber or plastic. They have no breakthroughs for flow passage, nor flow guide devices. Unlike theirs in traffic usual designation as "dirt trap" such facilities have no way of the

™ To "catch" dirt, but they take care of the opposite

part by the wake vortices generated on its leeward side in the turbulence area for the fact that the dirt thrown up by the vehicle wheels, Dust and water parts are more likely to be thrown up more strongly than if they were not present the mud flap of the fall would be. This is how the infamous water flags arrive the rear of fast-moving vehicles, which on the one hand allows the view of vehicles following behind affect up to traffic insecurity, on the other hand are responsible for it,

fc that the rear of the vehicle itself,

its traffic safety devices such as taillights, Flashing lights, identification plates, rear window, also to the point of traffic insecurity be covered with a film of dirt.

In contrast to this, the Schnratzabweiser According to the invention, a flow sequence directed against the roadway with significantly reduced Turbulence phenomena creates the disadvantages outlined at least to a considerable extent Extent in discontinuation brings "

1 098 50 / 0BB9

The invention consists in a dirt deflector for vehicles, in particular motor vehicles, with a in the area of the accumulation of dirt caused by a vehicle wheel approximately across the airstream on the Vehicle arranged .planar element, which is the larger for the passage of the airstream Has part of its surface occupying breakthroughs, in the area of facilities for conducting the are arranged through them passing airstream.

In a preferred embodiment of the invention, there is the planar element from a flow grid formed by horizontal lamellae, the lamellae are connected to one another at a distance by side parts arranged as a frame.

There are also proposed embodiments of the invention been, in which the sheet-like element consists of a honeycomb or lattice-shaped flow diaphragm consists. Both the slats and the side parts can preferably be made of elastic Material, for example made of rubber or plastic / be executed. Of course, too Metal versions possible.

There are known from process engineering, as well as from dedusting technology, which, referred to as "drip catchers" which have the property of creating water mist air aerosols in water and air disassemble. The dirt deflector according to the invention also has a similar effect.

109850/0559

The water veils torn up as a fine water mist from the profiled wheel periphery when passing through the surfaces of the guide device of the flow grid / whereby the mist-fine droplets agglomerate to form larger droplets on a water film that is forming and at the tear-off edge of the flow profiles as large droplets with the flow directed towards the roadway to the roadway be funded back.

™ The flow conditions and thus the mode of operation on motor vehicles with commercially known mud flaps and, in contrast, with the dirt deflector according to the invention are shown in both Figures 1 and 2, the device according to the invention itself in Figures 3 a, 3 b, 3 c, 4 and 5 shown.

Figure 2 shows a commercially available mud flap on the rear wheel 2 of the motor vehicle 3. The arrow 4 shows the relative flow direction in relation to the moving vehicle. This results in Flow direction in front of the dirt trap is a hatched overpressure zone 5 and one on the The leeward side of the dirt trap 1, also shown hatched, negative pressure zone 6 essentially upwardly directed turbulence field 7, which subsequently became notorious when the road surface was wet Water vane 8 entails.

In Figure 1 is a dirt deflector 9 after Invention shown. It can be clearly seen that the flow pattern on the leeward side 10 on the one hand much less turbulent, on the other hand essentially directed against the road, on the whole one

10985 0/05 5 9

has significant calming of the flow conditions, with dirt particles - according to the designation of the subject matter of the invention - be rejected in the direction of the roadway.

Figure 3a shows a side view of the dirt deflector 9. It has a device 10 for Attachment to the motor vehicle 3 and furthermore two lateral, acting as a frame side parts * 11, which in turn with the slats 12 to one planar element are connected. While in Figure 3 a the lamellae 12 are of different sizes, Figure 3b shows an embodiment variant of the same subject matter of the invention with lamellae 12 'which are identical to one another Size and the same profile. ■ In Figure 3 c there are angled slats 12 " shown, which are particularly conducive to the separation of water mist. The figures 4 5 and 5 show, in side view and front view, a dirt deflector with lamellas 13 of different types Size.

In this embodiment variant, the device carrier 10 'is additionally provided with a flow guide device 14 provided, which, according to Figure 1, an additional flow calming under the Rear of the vehicle causes.

There are also other design variants, ' in particular with regard to the selection of the material used, for example plastic, Rubber, but also metal, are conceivable and fall under the invention.

109850/0559

Claims (4)

P_A TENT CLAIMS (L ^ yschmutzabweiser for vehicles, especially motor vehicles, with a flat element arranged in the area of the dirt accumulation caused by a vehicle wheel approximately transversely to the driving wind flow on the vehicle, characterized in that this flat element (9) for the passage of the driving wind flow takes up the greater part of its area has openings, in the region of obligations Einrich- h (12, '12', 12 ", 13) for guiding the through it passing through Fahrtwxndströmung are arranged. 2. dirt deflector according to claim 1
characterized, that the planar element (9) from one of horizontal Lamellae (12, 12 ', 12 ", 13) formed flow grids, the lamellae through as a frame arranged side parts (11) are connected to one another at a distance. 3. dirt deflector, characterized according to claim 1 and 2, that the sheet-like element (9) consists of a honeycomb or ^ There is a lattice-shaped flow diaphragm. 4. dirt deflector according to claim 1, 2 and 3 characterized in that both the slats (12, 12 ', 12 ", 13), and the side parts (11) are preferably made of elastic material, for example rubber or plastic. 109850/05 59