FR2481666A1 - Fairing for towed caravan - has metal frame supporting aerodynamic plastics cover laced in place - Google Patents

Abstract

The fairing reduces air resistance at the front of a hauled caravan. It consists of a metal frame supporting a trimming adhering to the caravan front and fixing on the drawgear. The frame is of metal, adjustable and folding. The trimming is of plastics material and adjusted on the frame by lacing. The whole assembly has an aerodynamic shape. The assembly is removable and of light weight. The trimming can be of moulded material, sheet metal or timber.

Description

 The present traction relates to a removable device adapting to the front of the caravans to reduce the aerodynanic pressure exerted during the glow of road transport.

 The air pressure exerted at the front of the caravan reduces the speed of the towing vesicle while considerably increasing fuel consumption.

 There are already deflectors that attach to the roof of the car.

This process turns out to be efficient but insufficient: part of the air is blown over the caravan, but since it is wider than the car, aerodic pressure is still exerted on the lateral parts protruding from each side of the car. the device, according to the invention, is removable. It is an assembly made of plasticized canvas adhering to the front of the caravan and held by a metal frame fixing on the coupling jib and transforming the flat vertical part thereof. in a pointed profile at the end of the coupling head. As a result, the aerodynamic pressure can no longer be exerted on this tapered assembly.

 The effect is strongly felt by the driver who tows the caravan, especially when crossing large vehicles and in strong winds. Apart from these specific cases, normal driving is facilitated, acceleration is less strong for the same speed, resulting in significant savings in fuel.

 the three annexed drawing plsncnes numbered one to three give details of the mounting of the tubes, their fixing and the installation of the canvas on the caravan and on 1 metal frame.

In Figures 6 and 7 we can see the tapered shape of the device seen in profile and seen forward. The metal frame, not visible, consists of small tubes of the type used in camping. A partially hatched plasticized canvas covers
The installation of the entire device according to the invention is necessary to make slight modifications to the caravan.

 Figure 1 - We can use the rail 1 already existing on the left front side from top to bottom and which is used to mount the awning. But we must add, by fixing it on the horizontal gutter 2 existing on the caravan, a rail of the same type as that originally used, as well as on the right side 3 from the top to the pile.

 The metal frame consists of four tubes, one of which is fixed at the base to a metal part 4 by a lug 5. At the top of this vertical tube 6 is fitted a set of three tubes 7, the two outer tubes are arranged in V 8 and the third 9 in the center. Each end of the three tubes is provided with a rubber suction cup 10 which allows attachment to the body. caravan. In Figure 2 we can see that all of this metal frame has an aerodynamic shape.

 On the. arrow 11 of the caravan a flat metal part 4 is fixed to hell one hundred millimeters in length, twenty five millimeters in width and five millimeters in thickness, by a nut already existing on the hitch.

This part is perforated with holes 13 of five millimeters in diameter which allows an adjustment of the vertical tube 6 variable according to the model of cara vaine.

 Figure 4 - A plastic canvas covers this frame together.

It is cut into three connected parts. To each other to adapt perfectly to the metal support. A bead braid used for mounting the awnings is sewn onto the part of the canvas 16 which attaches to the caravan 17 by the rails. A zipper 18 closes the assembly at the vertical tube.

This fabric assembly is fixed at its lower part at the level of arrow 19 by elastic tensioners provided with hooks.

 the shape of the body varies according to the brands of caravans and according to the models. To counter this, a lacing 20 is provided on the left and right sides of the fabric which allows to adapt perfectly to each model.

To eliminate any winding, this lacing is covered by a tongue 21 of plasticized fabric fixed by Velcro type fasteners. This lacing system is adjusted during the initial assembly according to the particularity of each caravan and does not require any manipulation thereafter.

 The canvas assembly 14 is assembled and disassembled at each use thanks to the zipper 18 and to the bead braid 15. It is the same for the metal part. Everything is housed in a compact bag.

 The use of this device tends to reduce fuel consumption and makes it easier for the driver to drive.

 It can be made both in molded material, or in sheet metal, or in sheet metal, or in carpentry. But the weight would be more important and the storage less easy.

Claims (6)

 Claims.  in front of the caravan and attaching to the hitch.  -a metal frame supporting a coating adhering to the-  a towed caravan, characterized by the fact that it comprises I) Provision to reduce the air pressure exerted at the front 2) Device according to 1, characterized in that the armature is  metallic, adjustable and foldable. 3) Device according to 1, characterized in that the covering is  in adjustable plastic canvas on the metal frame by a  the cage. 4) Arrangement according to, characterized by the fact that the assembly has  an aerodynamic form. 5) DiBpositiS according to 2 and 3 characterized in that the assembly  is removable, light in weight, very compact and  easy storage. 6) Device according to 1, characterized in that it can 8trie  made of molded material, or in sheet metal, or in linen  or in carpentry.