ES2657829B2 - DOUBLE FRONT SUPPORT AND SELF-LEVELING SYSTEM FOR BICYCLES - Google Patents

Abstract

Double front support system and self-leveling for bicycles. # The system of the invention is based on the conventional fork of a bicycle being replaced by a fork (2) on which two front wheels (4) are mounted through arms articulated (6), mounted on the end of the fork itself (4) and related to supports (7) in which the appropriate hubs (8) for the wheels are mounted, all in combination with a braking system based on hydraulic clamps (10) and discs (13) and a self-leveling system, based on springs on a central part (16) and linkage rollers (17) to the articulated arm assembly (6), all so that the fork (2) and therefore the two front wheels (4) can be tilted to one side or the other, as well as vertically, achieving great driving stability.

Description

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DOUBLE FRONT SUPPORT AND SELF-LEVELING SYSTEM FOR BICYCLES

D E S C R I P C I Ó N

OBJECT OF THE INVENTION

The object of the present invention is to make it possible for a double support and self-leveling system to be mounted on a conventional bicycle, with a double front wheel of the same size as the rear one without preventing it from tilting to both sides by making It is much safer and easier to drive. In addition to incorporating a self leveling system in standstill.

BACKGROUND OF THE INVENTION

Some double front parallel wheel systems on bicycles are known, although they have always been designed and designed for the transport of parcels, suitcases and even children. Most of these systems are based on the inclined axle anchor and connecting rods that make it possible to achieve a small angle of inclination in the direction changes.

In other cases, two front wheel couplings are made to a conventional bicycle fork, but still what can be considered as a cargo tricycle.

On the other hand, in this type of bicycles with two front and one rear wheels, the front wheels are usually of a smaller diameter than the rear or rear, always establishing a limited angle of inclination and an immobilization system when stopping or once stopped.

In any case, the known systems have, among other disadvantages, the high weight, an unpleasant aesthetic appearance, a lack of maneuverability, offering great wind resistance, as well as a high final price.

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All the bicycles of the referred type have been designed to give utility within the city, making it possible to transport small goods in short journeys, being totally unfeasible to be able to enjoy a tour outside the city or tourist routes.

DESCRIPTION OF THE INVENTION

The system of the invention is based on the fact that on a conventional bicycle, a new system is mounted, replacing the classic fork and front wheel, with a series of particularities focused mainly on the safety of the person carrying it.

More specifically, the double front wheel system, product of the invention, has been developed in order to add a significant dose of safety in the front end of a bicycle and improve stability against conventional models.

To this end, the conventional bicycle and replacing the front fork, incorporates a new fork that in turn has two front wheels parallel to each other, which are mounted on hubs that, through their respective bearings, are joined to its supports, which are anchored to the corresponding balancing system and fork of the bicycle.

The wheels describe a parallel movement but at the same time it displaces the axis of the fork or center of gravity of the bicycle towards the wheel that is in the inner zone of the radius of the curve, which gives it much more stability and manageability .

In addition, the fork support is located below the center of the wheel axle, which always means that the point of gravity is below the wheel axle.

In this way we also get more stability in your driving, making you always look for the straight line without having to force your trajectory.

It is also provided with a self-leveling system by means of four springs in its lower part, for when it is stopped or at rest.

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It mounts two brake discs as standard, manipulated from the handlebars with a standard brake lever, which in combination with a fluid distributor system responsible for distributing the same brake pressure for both wheel discs.

With this system it is possible to stop the bicycle in a much smaller time than a conventional one and without the risk of sliding the front wheel, with its subsequent fall.

Another characteristic of the referred bicycle, is that in circumstances of wet or firm in poor condition increase the safety of the person who takes it, without losing the powers of a conventional bicycle when leaning on a curve.

One of the novelty characteristics is to make the fork move and stick to the inside side of the curve.

In addition to lowering the center of gravity through the articulation arms, getting more control and stability in the maneuvers.

Also incorporating a double hydraulic brake disc with equal oil distribution system in both calipers.

It also incorporates a system of self-leveling of the wheels to keep in balance when stopping, allowing the user to be mounted on the bicycle while standing or stopping, without having to put the feet on the ground.

For safety reasons, it is provided with covers both in its front and rear to prevent serious injuries from being run over. Also designed to remove the hands of children and adults from the mechanical system.

The device can be mounted on any conventional bicycle, simply by replacing the front fork with the whole of the device, since the current complete fork is replaced and the device itself is put in place, all without the need for technical assistance of any kind, since it does not require tools

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special or great efforts, and its assembly and disassembly are simple and can be done by anyone.

Another characteristic of novelty is that the two front wheels of the bicycle are of the same diameter as the rear rear wheel, being able to mount city or road tires, with an incredible aesthetic and benefits that just get on the bike are noted.

To avoid splashing on rainy days or spots on the asphalt, each wheel is equipped with its independent fender so that the tire is wrapped in its upper and rear area.

The system of double front support and self-leveling for bicycles makes any bicycle can ride two front wheels, being able to lean more than the limits that any citizen can reach, offering an agility clearly exceeded in the passage through curves to slow or high speeds and also offering a stopping power capable of stopping the bicycle in half the distance of a conventional bicycle, offering exceptional braking and cornering behavior on wet or firm surfaces in poor condition or sliding. Making a bicycle can be used by any type of people and ages, being able to fit in different models and sizes.

The inclination limit of the front wheels is established by the superposition in contact with each other of the articulation arms, with the particularity that when the fork is completely displaced and glued to the wheel inside the curve, it can continue to rotate with a single wheel without affecting its safety.

All the parts that participate in the device will be manufactured in high quality materials and under project calculation by a mechanical engineer that guarantees and certifies all the components used in the system.

All joints and turns are mounted on two bearings to ensure their durability and smoothness in their movements.

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For its part, the hardware elements will be manufactured in stainless steel quality, without logically discarding other materials both in the screws and in the elements that participate in the device and in the bicycle assembly.

As main part to say that the supports of the bushings that participate in the device, have the function of supporting the brake calipers of each wheel, as well as the fender supports, joining the articulation arms and housing inside the hubs of which split the spokes and tires along with their tires.

The ones in charge of transmitting the lateral movements so that the bicycle can be tilted are, firstly, the central fork provided with supports or axles to couple the articulation arms, which in turn by means of the parallel movement hold the supports on both ends of the bushings described above.

By means of said means the inclination movement is achieved.

The articulation arms are fixed by two axes and bearings to the fork and have the peculiarity of having been designed so that when they are tilted they make the fork stick to the side of the wheel in the interior area of the curve. In addition to lowering the center of gravity of it, with respect to the wheels.

Said articulation arms are fixed by means of their respective shafts and bearings to the hubs described above.

The wheels are rotated by the push or transmission of the bicycle, mounted on the hubs expressly designed for this system, since unlike normal bicycles based on a fork system on both sides of the wheel. In this, the wheel catch is on the inside side of each wheel.

The bushings are mounted on sealed ball bearings and fixed by means of a central screw to the hub support.

The self-leveling system of the wheels so that it remains in balance when stopped, is incorporated in the lower part of the fork with a completely removable system and based on a central support that supports four springs that at the same time

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they press on the lower part of the articulation arms by means of rollers that slide without friction and are in charge of maintaining tension in the articulation arms, so that once they stop pressing, they return to their leveling state. Depending on the weight of each person, these springs can be regulated or replaced and mounted the most suitable for each use.

DESCRIPTION OF THE DRAWINGS

To complement the description that will then be made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:

Figure 1.- Shows a side elevation view of a conventional bicycle equipped with a double front and self-leveling support system made in accordance with the object of the invention.

Figure 2.- Shows a front elevational view of the system of the invention, in a resting position and perpendicular to the ground.

Figure 3.- Shows the assembly represented in the previous figure without the covers or the wheels, showing the different parts and elements that participate in the system of the invention.

Figure 4.- Shows a front elevation view of the system of the invention, where one of the wheels is at a different level, but both resting on the ground.

Figure 5.- Shows a view like the one in the previous figure, but without the covers.

Figure 6.- Shows a view like that of figure 4 but showing one of the wheels at a different level from the other but in both cases perpendicular to the ground.

Figure 7.- Shows an enlarged detail of the self-leveling system that incorporates the

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set of the invention.

Figure 8.- Finally, it shows an exploded perspective view of the different elements and parts involved in the double front support and self-leveling system.

PREFERRED EMBODIMENT OF THE INVENTION

In view of the aforementioned figures, the double support system of the invention, applicable to any conventional bicycle (1), comprises an upper steering axle (3) provided for mounting and securing the corresponding handlebar, all as known. , steering axle (3) which is complemented by a fork (2) from which the effort is distributed and where the placement of all the elements that participate in the system is carried out, so that the fork (2) It is hollow and part of a round tube bar subjected to a curvature process to achieve the necessary advance in the front train of the bicycle, as shown in Figure 1.

Well, according to the invention, the fork (2) is provided for the assembly of two parallel wheels (4), which are complemented with their corresponding fenders (5).

On the lower part of the fork (2) and on the front and rear end of said fork there are provided pairs of shafts (25) aligned vertically, to which articulated arms articulated (6) are articulated, so that the joints They are made through timely needle bearings.

Said articulated arms (6) that are double, that is to say that they extend over the articulation that define the axes (25) on both sides, participating two in front and two behind, are linked by means of articulations (26) with respective supports (7), which constitute the mounting means for respective hubs (8) of the wheels (4), at the same time that said supports (7) constitute the fixing means for supports (9) for the fenders themselves (5), as well as mounting brackets (11) for brake calipers (10), including, as is conventional, said bushings (8), the corresponding bearings (12 ') and appropriate spacers (12).

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The appropriate brake discs (13), as well as an axle (14) for linking the support (7) of each hub (8) are fixed to the bushings (8).

The set also includes covers (18) that are screwed onto the supports (7) and that protect the entire mechanism.

From this structuring, the articulated quadrilateral formed by the pairs of arms (6) with the supports (7) of the wheels, together with their linkage to the fork (2) from the axles (25) makes that the wheels remain at all times parallel, regardless of the inclination that they may adopt, as well as if one moves vertically with respect to the other, for example when hitting an obstacle that has not affected the other wheel, all this as shown in figures 2 to 6.

As for the self-leveling system, shown in detail in Figures 7 and 8, a lid (27) is attached to the bottom of the fork (2) to which a central part (16) is attached which acts as a support for the leveling system as a whole, materialized by straps (15) emerging from the ends of said centerpiece (16), and linking the supports (7) with the fork (2) through end rollers (17 -17 '), so that the elastic recovery force of these straps (15) makes the wheels tend to the leveling position themselves, also acting as a suspension system for said wheels.

Claims (1)

5 10 fifteen twenty 25 R E I V I N D I C A C I O N E S 1a.- Double front support system and self-leveling for bicycles, which being intended for application in conventional bicycles, replacing the classic fork associated with the front wheel, is characterized by a steering axle ( 3) associated to a fork (2) in whose lower part and in correspondence with the front and rear end, vertically aligned shafts (25) are provided, in which respective articulated arms (6) are articulated, double, that is to say they extend to both, arms that are linked by means of articulations (26) to two supports (7), to which a braking system is associated, with the particularity that a lid (2) is located at the bottom of the fork (2) 27) to which a central part (16) is attached and which acts as a support for a self-leveling system, materialized by straps (15), which link the supports (7) with the fork (2) through end roller (1 7-17 ’). 2a.- Double front support system and self-leveling for bicycles, according to claim 1a, where on the supports (7) supports (11) for brake calipers (10) are mounted, being fixed by bolting to the hubs (8) the complementary brake discs (13). 3a.- Double front support system and self-leveling for bicycles, according to claim 1, where on the supports (7) supports (9) for fenders (5) are fixed. 4a.- Double front support system and self-leveling for bicycles, according to claim 1, wherein on the supports (7) are fixed covers (18) of protection of the mechanism associated with the double support and self-leveling of the wheels.