FR3113622A1 - SKID AID DEVICE WITH A CIRCULAR RING - Google Patents

Abstract

The invention relates to a skid aid device provided with a circular ring making it possible to artificially induce a skid for Motorized Land Vehicles, on traditional road surfaces or circuits, empty parking lots, sections of closed road with an asphalt surface or concrete. The invention consists of a so-called solid wheel, a circular part in the form of a ring without a tire, optionally coupled to a reversible plate, made of steel, multi-perforated at the center distances of the wheels available on the market, allowing the mounting of the together on the original wheel studs of the vehicle whatever its center distance for universal fitting. Currently, technical platforms equipped with a special surface coating that is regularly moistened and therefore water-consuming allow this kind of initiation. They are therefore not geographically mobile because they are permanently installed on a specific site and are expensive to install and operate. The invention is intended to simplify the implementation of an initiation platform, eliminate any use of water, any evaporation of water stagnating on the asphalt or concrete heated by the sun, eliminate any depollution operations and their induced electricity consumption.

Description

SKID AID DEVICE WITH A CIRCULAR RING

The present invention relates to a skid aid for land motor vehicles (VTM). Currently there are specialized organizations that provide anti-skid courses to learn how to control cars before and during skidding, skids are done intentionally and in the most controlled way possible. Specific courses are laid out for such an initiation and equipped with special coatings. Special coatings which, when wet, considerably degrade the handling of vehicles. Logically, these special surfaces are specially implemented and appropriate for courses intended for skidding training. They are therefore not mobile because they are permanently installed on a specific site and are expensive to manufacture and install. Another method exists consisting of installing a tire coating (polyvinyl chloride) in the form of a ring of about 40mm operating thickness, to be mounted on the running surface of a tire specially dedicated to this use, unlike the present invention of a solid wheel no longer requiring the presence of a tire as a support and whose operating surface is around 100mm, therefore economically very profitable.

Purpose of the invention:

The object of the invention is to create a skid aid. It must make it possible to democratize the practice of skidding with any Motorized Land Vehicle, on traditional road surfaces, for example on a car park with a clearly delimited action and safety zone, on an approved circuit or secure road sections. with an asphalt or concrete pavement. Roads temporarily closed to traffic for the duration of an anti-skid lesson or introduction given by a qualified professional. Many insurers encourage young drivers to take part in this type of course provided by these too rare organizations.

Description of the invention:

This object is achieved in accordance with the invention by a so-called solid wheel, therefore devoid of a tire and inner tube, possibly coupled to a steel plate on the hub side of the vehicle, allowing the assembly to be mounted on the original wheel studs. of the vehicle.

Solid wheel with a more or less wide ring-shaped tread depending on the desired loss of grip. The solid part in contact with the ground responsible for the low friction is configured rigid with a thickness ranging from 20 to 250mm. The result is a skid aid manufactured at a controlled cost, which can be used individually and whose diameter and width of the tread can be adapted to the original dimensions of the equipped vehicle. Such a device according to the invention may or may not require the use of a rim (sheet metal, aluminum, special alloys). It can also be provided, longitudinally, perpendicularly or diagonally to the tread, sculptures cut in the mass and intended to help to regain grip.

The diameter of the solid wheel installed on the vehicle depends on the diameter of the original wheel fitted with a tire on said vehicle.

Appropriately, the solid wheel is made of a material which has a very low grip and friction power unlike the rubber of the original tire of the school vehicle. By the choice of material, the low friction and thus the slip properties of the school vehicle can thus be influenced.

The internal surface of the solid wheel possibly in contact with a rim in sheet metal, aluminum or light alloy, can be fitted with screws/bolts to guarantee a good connection with the rim.

A suitable material for the solid wheel is, for example, a synthetic material, HDPE Polyethylene obtained by extrusion or pressure: HDPE 300. There is a material which is better in terms of its sliding property, resistance to abrasion and temperature rise, but which is however more expensive: HDPE High Density 500 or even better HDPE 1000, 6000, 8000 also called HDPE UHMW PE. With specific self-lubricating and crushing resistance properties to limit the ovalization of the device and to guarantee a very small surface in direct contact with the floor covering. HDPE sheets from extrusion or by pressure.

The solid part in contact with the ground responsible for the low friction can also be made from semi-crystalline thermoplastics such as Polyetheretherketone (PEEK), cast Polyamide filled with solid lubricant (SUSTAGLIDE), cast Polyamide filled with liquid lubricant (PA6G OIL), Cast polyamide (PA6G), Polyacetal (POM C), Polyethylene terephthalate (PETP).

The invention also relates to a method for mounting a solid wheel sandwiched between two half-rims, two flanges in steel or light alloy, held together by a screw/bolt system.

Brief description of figures: (↲)

There shows a sketch in perspective of a solid wheel devoid of rim and tire, provided with holes and a central bore allowing the mounting of the assembly on the wheel studs of the hub of the vehicle. (↲)

There shows a sketch of a reversible steel plate with multiple countersunk holes. (↲)

There shows the inside view of a solid wheel with no rim but coupled to a plate mounted on the wheel hub. (↲)

There shows an exterior view of the solid wheel which can be coupled to a plate mounted on the hub of the vehicle, fixed using the original nuts. (↲)

There shows a solid wheel which can be equipped with a plate, the tread having more or less deep tread patterns, more or less numerous, cut in the mass longitudinally to the tread. (↲)

There shows a solid wheel which can be equipped with a plate, the tread having more or less deep tread patterns, more or less numerous, cut in the mass perpendicular to the tread. (↲)

There shows a sketch in perspective of a full wheel sandwiched between two half rims, held by a system of screws/bolts. (↲)

There shows a schematic section through a full wheel sandwiched between two half-rims, held together by a screw/bolt system, the tread may have more or less deep tread patterns, more or less numerous, cut in the mass longitudinally or perpendicularly. (↲)

There presents the solid wheel sandwiched by a plate on the outside and the reversible multi-perforated plate on the hub side of the vehicle. (↲)

Detailed description of exemplary embodiments with the aid of the figures: Solid wheel (1) shown schematically in the , of cylindrical shape, bored in its center (2) and provided with holes (3) allowing its fixing on the vehicle to be equipped. The solid wheel has a tread (4) which can be of variable width depending on the vehicle and the expected reactions in terms of loss of grip with the ground. The solid part in contact with the ground responsible for the low friction is configured rigid with a thickness ranging from 20 to 250mm. Its outside diameter also depends on the original fitment of the vehicle.

There represents a reversible steel plate (5) firmly held by means of suitable bolts of the BTR type or threaded rods (6). Plate equipped with countersunk holes (7) between multiple axes, differentiated milling, front side of the plate for 4 x 100 and 4 X 110 and 4 X 156 spacings for example and back side of the plate for 4 x 115 spacings and 4 x 136 and 4 x 144 for example.

The solid wheel represented on the can be equipped with the reversible plate allowing mounting on the wheel hub (8) of the vehicle.

As indicated by the , the solid wheel is fixed to the hub by screwing the nuts (9) onto the studs or using the wheel bolts in their original location.

The tread of the solid wheel, however, may not be configured as continuous, as it is in Figs. 1and . It can also be configured interrupted as shown in the longitudinally (10) and/or perpendicularly (11) on the , of variable depth depending on the desired result, the nature of the floor covering and the weather conditions.

As shown on the , the solid wheel (1) can be sandwiched between two rim half-flanges (12) firmly held together by a suitable set of screws/bolts (13).

There shows a schematic section through a solid wheel assembly (1) sandwiched by the two half-flanges (12) held by a set of screws and bolts (13).

: The tread (4) of the solid wheel sandwiched between two half flanges, however, may not be configured as continuous, as it is on the . It can also be configured interrupted as shown in the longitudinally or perpendicularly as shown in the , or diagonally, of variable depth depending on the desired result, the nature of the floor covering and the weather conditions.

: The solid wheel can be sandwiched by a plate on the outside (14) and the reversible multi-perforated plate (5) on the hub side (8) of the vehicle.

It is immediately apparent that the various features of the embodiments shown can be combined in almost any way with each other. This is why these examples of embodiment must be understood as an indication of the multiplicity of possible variants of such solid wheels equipped or not with internal and/or external plates, and not at all in a restrictive manner as scope of the claim.

Claims (9)

Skid aid device for Land Motor Vehicles (VTM) characterized in that it comprises a circular ring (1), solid, free of tyres, air, and/or inner tubes, the center of which can be bored. Device according to any one of the preceding claims, characterized in that the solid part (1) in contact with the ground (4) is made of a synthetic material which has less friction compared to a usual road surface such as 'asphalt or concrete, than the original rubber of the tire. Device according to any one of the preceding claims, characterized in that the solid part can be coupled (by means of suitable screws (6)) to a reversible plate (5) on the inside (wheel hub (8)), multi perforated and milled (9) to the different wheel center distances (7) available on the market to allow “universal” mounting. Device according to any one of the preceding claims, characterized in that the solid part in contact with the ground representing the grip surface can be interrupted. Interruption in the direction of travel, diagonally or perpendicularly, of variable depth. Device according to any one of the preceding claims, characterized in that the solid part in contact with the ground responsible for the low friction is made of a synthetic material, HDPE High Density Polyethylene (HMW PE) obtained by extrusion or pressure: HDPE 300 , 500, 1000 or HDPE Ultra High Density Polyethylene (UHMW PE) 6000 or 8000. Device according to any one of the preceding claims, characterized in that the solid part in contact with the ground responsible for the low friction can be manufactured from semi-crystalline thermoplastics such as polyetheretherketone (PEEK), cast polyamide filled with solid lubricant (SUSTAGLIDE), Cast polyamide filled with liquid lubricant (PA6G OIL), Cast polyamide (PA6G), Polyacetal (POM C), Polyethylene terephthalate (PETP). Device according to any one of the preceding claims, characterized in that the solid part in contact with the ground responsible for the low friction is configured rigid with a thickness ranging from 20 to 250 mm. Device according to any one of the preceding claims, characterized in that the solid part in contact with the ground responsible for the low friction is sandwiched between two flanges (12) whatever the material used, held together by a system of fasteners/bolts (13). Device according to any one of the preceding claims, characterized in that the solid wheel is sandwiched between the multi-perforated inner plate and an outer-side plate (14) making it possible to ensure maximum tightening without deformation of the material.