ES2944602A1 - Tilt system for vehicles (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Tilt system for vehicles. It is a vehicle inclination system which comprises two symmetrical sets of articulated bars, joined at the same point, each comprising two mechanisms with four articulated bars and a crank-slider mechanism where the two systems are joined at the slider (5). The translational movement of the slider (5) is linked by the suspension (6) to the rocker (7), which in turn, by means of the push bar (8), transmits the movement to the lower arm (9), which is the one that connects by means of the spindle (10) to the wheel (11), which allows the inclination and rotation of the vehicle. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Tilt system for vehicles

TECHNIQUE SECTOR

The present invention refers to an inclination system used in vehicles.

The object of the invention is to provide lateral inclination to four-wheeled vehicles, providing them with greater stability and safety when driving.

BACKGROUND OF THE INVENTION

47% of accidents with fatalities are linked to vehicle stability. This figure grows to 49% on interurban roads. Given these figures, 2-wheel vehicle manufacturers have paid special attention to this type of problem, incorporating systems that allow for more stability in all circumstances. These systems integrate additional wheels, resulting in three- or four-wheel vehicles with a dynamic similar to that of motorcycles.

Users understand that the safety offered by three or four wheels with the classic dynamics of motorcycles improves the stability of vehicles and they seek the safest and most efficient way possible to get around.

The first serial vehicle to incorporate this type of solution with more than 2 wheels was the Piaggio MP3 scooter in 2006, making it a relatively young market, more due to evolution than time, since for many years it was the only model with this type of solution. The market has grown and there are currently more factories involved in similar solutions such as Gilera, Yamaha, Peugeot, Kimco, Sym, Quadro, with many 3 and 4 wheel drive configurations, with Quadro being the manufacturer that offers these products.

The background to the present invention, the inclination system for vehicles, with users sitting one behind the other, there are the following vehicles, Toyota I-road, Icona E3wm, Peugeot EU-live, which in these cases the mass of the vehicle and occupants is centered so that it does not decompensate while driving, such as a two-wheeled vehicle in parallel, motorcycle, scooter or similar.

The present development incorporates the inclination system in an electric propulsion vehicle in which the disposition of the masses or the seats for the users does not have to be centered, in line or tandem, but can be parallel, or asymmetric loads without that the vehicle decompensates while driving thanks to the inclination system, taking advantage of the shifting weight, it shifts the center of gravity of the vehicle towards the inside of the curve, allowing the running gear to be balanced with the rest of the vehicle and integrate with the main systems of dynamics, steering, suspension, braking, traction and other electronic systems. The inclination system modifies the position of the center of gravity, improving grip.

The main advantage compared to cars and motorcycles is the active safety of the passengers as it improves the guidance of both rolling trains. According to the Motorcycles and Scooters, 3-4 wheel models, the tilt system configuration prevents falling or overturning, offering greater safety for passengers.

EXPLANATION OF THE INVENTION

The inclination system satisfactorily solves the aforementioned problem, providing an effective solution.

The inclination system for vehicles, object of the invention, comprises two sets of articulated bar mechanisms, one for each wheel, comprising two mechanisms with four articulated bars and a connecting rod-crank-slider system. All the fixed points of the mechanisms are attached to the chassis, making this the frame of the mechanism.

This system, with the longitudinal movement of the slider, makes the bar mechanisms move inversely with respect to each other, and it is this movement that creates a height difference in the wheels that becomes the inclination of the vehicle.

The movement is initiated by the steering wheel, which, together with the steering column, allows the slider to move longitudinally, in such a way that, together with the connecting rod-crank-slide system, makes the wheels, at the same time that the vehicle tilts , turn in the desired direction, in both directions, left and right.

BRIEF DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is attached as an integral part of said description, where, with an illustrative and non-limiting nature, what has been represented has been following:

Figure 1.- Shows a rear elevation view of the inclination system when it is in the neutral position.

Figure 2.- Shows a plan view of the inclination system when it is in the neutral position.

Figure 3.- Shows an isometric view of the inclination system when it is in the neutral position.

Figure 4.- Shows a rear elevation view of the system when tilted to the left.

Figure 5.- Shows a plan view of the system when tilted to the left. Figure 6.- Shows a rear elevation view of the system when tilted to the right.

Figure 7.- Shows a plan view of the system when tilted to the right. Figure 8.- Shows the bar diagram of the inclination system in neutral position.

PREFERRED EMBODIMENT OF THE INVENTION

An example of a preferred embodiment of the present invention is described below, provided for illustrative, but not limiting, purposes.

In Figures 1, 2 and 3, you can see the inclination system in neutral position. The movement of the system begins with a turn of the steering wheel (1), which, linked through the steering column (2), allows transforming a circular movement into a linear one. by means of the pinion (3) and rack (4) system, attached to the slider (5), which moves along a guide (14) attached to the chassis (15). The linear movement of the slider (5) pushes and/or stretches the dampers (6), which with a high damping constant allow them not to compress, so that the movement is transmitted to the rocker (7), which, attached to the bar thrust (8), causes the lower arm (9) to rotate with respect to the point of union with the chassis (15) and this movement makes the spindle (10) and wheel (11) rise vertically.

Because the geometry formed by the upper arms (13), lower arms (9), knuckle (10) and the chassis (15) form a parallelogram, this movement between the knuckle (10) and the chassis (15) will always be parallel to the vertical median plane of the mechanism.

The rotation movement of the wheels (11) with respect to the vertical axis that causes the vehicle to turn is due to the fact that the horizontal distance of the wheels (11) with respect to the vertical median plane of the mechanism increases if it is inside the curve and It decreases if you are abroad. Joining the chassis (15) with a movable part that allows the movement of the wheel (11) in the vertical axis of the spindle (10) through a rigid bar (12) with joints at the ends makes it impossible to vary this distance, the wheels (11) turn.

In Figures 4 and 5, it can be seen how turning the steering wheel (1) to the left moves the slider (5) to the right and how the inner wheel goes up and turns to the left and the outer wheel goes down and turns to the left too.

In Figures 6 and 7, it can be seen how turning the steering wheel (1) to the right moves the slider (5) to the left and how the inner wheel goes up and turns to the right and the outer wheel goes down and turns to the right too.

In Figure 8, you can see the bar diagram of the inclination system. This diagram allows to observe the basic mechanism and its joints.

Claims (13)

1. Inclination system, which includes vehicles, both light quadricycles, heavy quadricycles and any other vehicle with a mass between 450 kg and 4500 kg. 2. The system, according to claim 1, wherein it comprises vehicles with 2 or more wheels. The system according to any one of the preceding claims, wherein there are one or more seats. 4. The system according to any one of the preceding claims, wherein it comprises the system with or without a steering rack. 5. The system according to any one of the preceding claims, wherein it comprises a use of the private or industrial vehicle. 6. The system according to any one of the preceding claims, wherein it comprises an inclination system with a constant pitch or a variable pitch. The system according to any one of the preceding claims, wherein it comprises a heat engine and/or an electric motor. The system according to any one of the preceding claims, wherein it comprises an autonomous vehicle. 9. The system according to any one of the preceding claims, wherein it comprises a vehicle with or without pedals. The system according to any one of the preceding claims, wherein it comprises a vehicle with or without a steering wheel. 11. The system according to any one of the preceding claims, wherein it comprises the inclination system by mechanical or electrical drive. The system according to any one of the previous claims, wherein the push bar (6) and the damper (8) can be interchangeable in position. The system according to any one of the preceding claims, wherein the driving position is centered or off-center.