SPRAY DEFLECTORS FOR VEHICLES

Abstract: Apparatus for reducing the amount of water spray produced by a wheel (5, 6) of a motor vehicle, comprises a mudguard (11, 12) extending round an upper part of the wheel (5, 6), and a water collection chamber (14, 24) abuting the rear bottom edge of the mudguard (11, 12) and having an open front wider than the edge of the wheel (5, 6), a rear wall (18, 29) having its outboard edge nearer to the front of the vehicle than its inboard edge and an outlet inboard of the inboard edge of the wheel (5, 6).

Description: This invention relates to apparatus for reducing the amount of water spray produced by the wheels of motor vehicles, of the type comprising a mudguard extending round an upper part of the wheel, a water collection chamber having an open front wider than the edge of the wheel and an outlet inboard of the inboard edge of the wheel. Apparatus of this type is disclosed in GB-A-2014525. According to the invention, the water collection chamber abuts the rear bottom edge of the mudguard and the outboard edge of its rear wall is nearer to the front of the vehicle than its inboard edge. A deflector plate may be secured to the front of the mudguard with its front edge above its rear edge and in front of the mudguard. Preferably, the rear edge of the deflector plate is closer to the wheel than is the adjacent part of the mudguard. An embodiment of the invention will now be described with reference to the accompanying drawings, in which:- Figure 1 is a side view of an articulated commercial vehicle fitted with apparatus in accordance with the invention; Figure 2 is a side view, on an enlarged scale, of the rear wheels of the vehicle shown in Figure 1; and Figure 3 is a sectional view taken on the line 3 - 3 in Figure 2. Referring first to Figure 1, an articulated commercial vehicle comprises a tractor 1, having front wheels 2 and rear wheels 3, and a trailer 4, having front wheels 5 and rear wheels 6. Turning to Figures 2 and 3, there are inner wheels 7 and 8 on the same axles 9 and 10 as the rear wheel 5 and 6 respectively. A mudguard extends round the upper part of the periphery of the front wheels 5 and 7 of the trailer and a similar mudguard 12 extends round the upper part of the periphery of the rear wheels 6 and 8. The rear edge of the rear mudguard 12 is above the level of the axle 10 and is attached to the top wall 13 of a water collection chamber 14. The water collection chamber 14 also has an inboard side wall 15, an outboard side wall 16 extending parallel to the longitudinal axis of the vehicle, a bottom wall 17 and an oblique rear wall 18. The oblique rear wall 18 has a main portion 19 and an inboard portion 20. The main portion 19 extends from the rear edge of the outboard side wall 16 inwardly and backwardly to a location behind the inner rear wheel 8 where it joins the inboard portion 20. The inboard portion 20 runs inwardly and backwardly to the inboard rear corners of the top wall 13 and bottom wall 17. The inboard portion 20 is oriented at a greater angle to the outboard side wall 16 than is the main portion 19. The inboard side wall 15 extends from the front of the top wall 13 and bottom wall 17 rearwardly and inwardly at an angle between that of the main portion 19 of the rear wall 18 and the inboard portion 20 thereof so as to form an outlet between its rear edge and the inboard edge of the rear wall portion 20 which is wider than the distance between the front edge of the inboard side wall 15 and the junction between the two portions 19 and 20 of the rear wall 18. The inboard edge of the top wall 13 is higher than its outboard edge. The bottom wall 17 is formed in two sections, the front section 21 being horizontal and the rear section 22 sloping downwardly from the front section 21. Similarly, the rear edge of the front mudguard 11 is above the front axle 9 and is attached to the top wall 23 of a water collection chamber 24 which also has an inboard side wall 26, an outboard side wall 27 extending parallel to the longitudinal axis of the vehicle, a bottom wall 28 and an oblique rear wall 29, all of equivalent shape to the corresponding chamber of the water collection chamber 15. The front edge of the front mudguard 11 carries a sloping deflector plate 30, the front edge of which is higher than its rear edge. The deflector plate 30 serves to separate water droplets carried over the tops of the wheels 5 and 7 from the flow of air due to movement of the vehicle, which may carry droplets of water produced by the wheels of the tractor. Rubber flaps 31 and 32 are attached to the outboard and inboard edges of the mudguard 11 respectively and extend from the deflector plate 30 to the top wall 23 of the front water collection chamber 24, thus preventing any droplets of water which are carried above such water collection chamber 24 from escaping laterally. Such droplets are carried over to the top of the deflector plate 30 and drip off the rear edge thereof. Similar rubber flaps 33 and 34 are attached to the inboard and outboard edges of the rear mudguard 12, the function of the deflector plate 30 being performed by the bottom plate 28 of the front water collection chamber 15. The front and rear wheels 2 and 3 of the tractor may be provided with apparatus in accordance with the invention consisting of the front half of the apparatus fited to the front trailer wheels 5 and 7 and the rear half of the apparatus fitted to the rear trailer wheels 6 and 8. The lateral movement of the steered wheels 2 may be accommodated if the apparatus is as wide as that illustrated in Figures 2 and 3, i.e. is wide enough to accommodate two non-steered wheels. It will be apparent to those skilled in the art that the invention can readily be applied to three-axle trailers and also to vehicles with rigid bodies.

Claims: 1. Apparatus for reducing the amount of water spray produced by a wheel (5, 6) of a motor vehicle, comprising a mudguard (11, 12) extending round an upper part of the wheel (5, 6), a water collection chamber (14, 24) having an open front wider than the edge of the wheel (5, 6) and an outlet inboard of the inboard edge of the wheel (5, 6), characterised in that the water collection chamber (14, 24) abuts the rear bottom edge of the mudguard (11, 12) and the outboard edge of its rear wall (18, 29) is nearer to the front of the vehicle than its inboard edge. 2. Apparatus according to claim 1, wherein the outlet is located at the inboard side of the chamber (14, 24). 3. Apparatus according to claim 2, wherein a first portion (20) of the rear wall (18) bounds the rear edge of the outlet and the chamber (14, 24) has an inboard side wall in front of the outlet oriented at a smaller angle to the direction of travel of the vehicle than the first portion (20) of the rear wall (18). 4. Apparatus according to claim 2 or 3, wherein a second portion (19) of the rear wall (18) extends from the first portion (20) of the rear wall (18) at a smaller angle to the direction of travel of the vehicle than the first portion (20) of the rear wall (18). 5. Apparatus according to claim 2 or 3, wherein the chamber (14, 24) has a top wall (13, 23) with its inboard edge higher than its outboard edge. 6. Apparatus according to claim 1, 2 or 3, wherein the chamber (14, 24) has a bottom wall (17, 28) comprising a forward portion and a rearward portion, the rear edge of the rearward portion being lower than the front edge thereof. 7. Apparatus according to claim 1, 2 or 3, wherein a deflector plate (30) is attached to the front edge of the mudguard (11), the front edge of the deflector plate (30) being above the rear edge thereof. 8. Apparatus according to claim 1, 2 or 3, wherein a flap (31, 33) formed of flexible material is attached to the outboard edge of the mudguard (11, 12). 9. Apparatus according to claim 1, 2 or 3, wherein a flap (32, 34) formed of flexible material is attached to the inboard edge of the mudguard (11, 12).

Inventors: CUNNINGHAM, DOUGLAS JAMES
Applicants: BSG INTERNATIONAL PLC
Application year: 1986
Main classification: B62D25
IPC codes: B62D25