WO2019166582A2

WO2019166582A2 - Vehicle wheel comprising pairs of tensioned spokes

Info

Publication number: WO2019166582A2
Application number: PCT/EP2019/055054
Authority: WO
Inventors: Marc PICRIT; David Dumas
Original assignee: Enove
Priority date: 2018-03-01
Filing date: 2019-02-28
Publication date: 2019-09-06
Also published as: WO2019166582A3; BE1026065A1; BE1026065B1

Abstract

A vehicle wheel comprising a hub body (1) and a wheel rim (2) is characterised in that it comprises a plurality of pairs of spokes, each pair of spokes comprising two tensioned spokes (3a, 3b), each spoke (3a, 3b) comprising a rim end (4) and a hub end (5), the two hub ends (5) of the spokes in each pair of spokes being interconnected by a connection member (6, 7a, 7b) tangentially stabilised with respect to the hub body (1), each connection member (6, 7a, 7b) comprising tension adjustment means to adjust the tension applied to the spokes (3a, 3b), the adjustment means being capable of varying the distance between the hub ends (5) of the two spokes of the pair of spokes by moving the hub ends (5) in relation to the hub body (1).

Description

Vehicle wheel with energized spoke pairs

Field of the invention

The invention relates to the technical field of vehicle wheels.

The invention more specifically relates to a wheel comprising live spokes, which can be used in a bicycle.

Description of the previous part

[0002] US 2010/0264722 discloses a bicycle wheel in which the spokes can be made of high performance materials, such as polymers with carbon fiber reinforcement. The tension adjustment of the spokes is achieved using a hardware system comprising a nut inserted into a hole in the rim in which is screwed a nipple (threaded mechanical sleeve). The nipple is threaded in order ^to receive the threaded end of a spoke. The actuation in rotation of the nipple generates a relative translational movement between the threaded end of the spoke and the nut which is fixed relative to the rim, which allows to adjust the tension in the radius. The other end of the spoke, in turn, comprises an ^anchor head inserted into a hole in the hub body. These mechanically reversible fasteners at both the rim and hub hubs can individually replace a spoke that would have been damaged while retaining the rim, the hub body or the other spokes of the wheel. In the systems disclosed by this document, the tension adjustment means for each spoke positioned at the rim have the effect of increasing the moment of inertia in rotation of the wheel, which makes the wheel less efficient because less reactive during acceleration or deceleration of the bicycle initiated by the cyclist.

The document DE202012100063 discloses a bicycle wheel in which the tension adjustment means of the spokes are positioned at the ends of the spokes attached to the hub body of the wheel. The greater proximity between the voltage adjustment means and the center of the wheel makes it possible to reduce the moment of inertia compared to previously disclosed systems in which the adjustment means are at the level of the rim. In the wheels disclosed by this document, the spokes of the wheel are, however, mechanically stressed in torsion and in shear, at least at certain times during the transmission of a torque between the hub and the rim. This guy solicitation is indeed due to the path of the spokes whose extension intercepts the axis of rotation of the wheel.

US 6 238 008 discloses a bicycle wheel whose spokes are made of high performance materials, such as carbon fiber materials. Radius tension adjustment systems are provided and are positioned at the rim or hub body of the wheel. In the various embodiments disclosed, voltage adjustment systems are however complex because they consist of multiple parts. In case of damage to the wheel following a fall or an accident suffered by the cyclist, the repair of the wheel by replacing the appropriate parts and reassembly of the wheel will indeed be difficult to perform in a reasonable time by the cyclist. Moreover, in the mechanical arrangement in this document, some parts, especially in the hub, have fragile areas particularly exposed to shocks and therefore appear to limit wheel resistance in case of ^accident. The shape of the hub body disclosed in this document of the previous part is also not very aerodynamic.

Summary of the invention

An object of the invention is to provide a high performance bicycle wheel having an optimum mass and moment of inertia in rotation.

Another object of the invention is to provide a mechanically robust wheel to resist the stresses and shocks inherent in the practice of cycling at a high level.

[0007] Another object of ^the invention is to provide a modular wheel easy to mount and consists of various parts that can be easily replaced in case of damage.

The present invention is defined in the appended independent claims. Preferred embodiments are defined in the dependent claims. According to a first aspect, the present invention relates to a vehicle wheel comprising

a hub body;

-a rim; characterized in that it comprises a plurality of pairs of spokes, each pair of spokes comprising two live spokes, each spoke, each spoke including a rim end and a hub end, the two spoke hub ends of each pair spokes being coupled to each other by a tangentially stabilized joining member to said hub body, each connecting member including voltage adjusting means for adjusting the applied voltage in said spokes, said voltage adjusting means being adapted to vary the distance between the hub ends of the two spokes of the pair of spokes by moving said hub ends relative to said hub body.

According to an advantageous embodiment, each spoke further comprises an end hub portion disposed tangentially to said hub body.

According to an advantageous embodiment, the hub body comprises a right lateral flange and a left lateral flange whose planes are perpendicular to the axis of rotation of the wheel, one half of the junction members being stabilized tangentially to the flange right lateral, the other half being stabilized tangentially to the left lateral flange.

According to an advantageous embodiment, said connecting member of each pair of spokes comprises at least one turnbuckle provided with a central tube threaded at both ends, a threaded rod being screwed to each of said two ends, each of the two threaded rods being coupled to the hub end of a spoke of the pair of spokes.

According to an advantageous embodiment, said connecting member of each pair of spokes comprises at least two turnbuckles provided with a central tube threaded at at least one of its ends, said threaded rod being screwed to said at least one of its ends, said threaded rod being coupled to the hub end of a spoke of the pair of spokes.

According to an advantageous embodiment, the hub body comprises planar parts for tangentially receiving said joining members.

According to an advantageous embodiment, tangential stabilization means of the connecting members are provided on the hub body.

According to an advantageous embodiment, the tangential stabilization means of the connecting members comprise stabilizing pins. According to an advantageous embodiment, the tangential stabilization means of the connecting members comprise abutment surfaces.

According to an advantageous embodiment, the hub end of each spoke comprises a loop coupled to said connecting member.

[00018] According to one advantageous embodiment, ^the rim end of each spoke is coupled mechanically reversible manner to the rim of the wheel.

According to an advantageous embodiment, the rim end of each spoke comprises a loop coupled to fastening means on the rim.

According to an advantageous embodiment, the spokes are made using a thermosetting resin impregnated with carbon fibers.

[00021] Other embodiments of a bicycle wheel according to the invention are indicated in the appended claims.

According to a second aspect, the present invention relates to a vehicle wheel system comprising at least a first radius arranged to cooperate with at least a second radius, said at least one radius comprising a rim end and an end of hub, said rim end being arranged to be reversibly connected to the rim, said rim end being provided with a first connection means arranged to be coupled to a means for fixing said rim, said connecting means forming a loop, said hub end being arranged to be reversibly connected to a connecting member, and said hub end comprising a second connecting means complementary to a third connecting means of said connecting member.

According to an advantageous embodiment, the vehicle wheel system comprises at least two spokes arranged to form at least one pair of spokes under tension, each spoke comprising a rim end and a hub end, said rim end. being arranged to be reversibly connected to the rim, said rim end being provided with a first connection means arranged to be coupled to a means for fixing said rim, said connection means forming a loop, said hub end being arranged to be reversibly connected to a connecting member, and said hub end comprising a second means complementary connection to a third connecting means of said connecting member.

According to an advantageous embodiment, the vehicle wheel system comprises a rim provided with a fixing means, said first fixing means being arranged to be coupled to said connecting means of the rim end of said spoke.

According to an advantageous embodiment, the vehicle wheel system further comprises at least one connecting member.

According to an advantageous embodiment of the vehicle wheel system, the junction member comprises one or more tensioning adjustment means selected from the group of threaded ends, threaded end caps, turnbuckle cages, end caps. eye or hook arranged to adjust the voltage applied in said spokes.

According to an advantageous embodiment, the vehicle wheel system comprises a mechanical reinforcement, arranged to be disposed in the rim, and strengthen said fastening means of said rim. According to an advantageous embodiment, the vehicle wheel system further comprises one or more aerodynamic flanges arranged to be fixed to said rim.

[00029] Other embodiments of a bicycle wheel system according to the invention are indicated in the appended claims. According to a third aspect, the invention also relates to a bicycle comprising a vehicle wheel according to the invention.

According to a third aspect, the invention also relates to a wheelchair comprising a vehicle wheel according to the invention.

BRIEF DESCRIPTION OF DRAWINGS [00032] ^Other features, details and advantages of the invention emerge from the description given hereinbelow, without limitation and with reference to the drawings.

Figure 1 shows a perspective view of a wheel according to the invention; Figure 2 shows a profile view of the hub body and a spoke pair of a wheel according to the invention;

Figure 3 shows an enlargement of the portion of the hub body on which the junction member is stabilized;

Figure 4 shows an enlarged schematic view of a second embodiment of the portion of the hub body on which the junction member is stabilized;

Figure 5 shows an enlarged schematic view of a second embodiment of the portion of the hub housing on which the junction member is stabilized, where the turnbuckle is shown exploded;

Figure 6a shows a perspective view of a first embodiment of the connection means between a spoke and a junction member;

Figure 6b is a schematic view of Figure 6a where the connection means is exploded.

Figure 7 shows a perspective view of the inside of a rim of the wheel according to the invention;

8 shows a sectional view of the rim ^of a wheel according to ^the invention;

Figure 9 is a schematic representation of a section of a second embodiment of a rim of the wheel according to the invention;

Figure 10 is a schematic representation of another section ^of a second embodiment of the rim of a wheel according to the invention;

Figure 11a shows a perspective view of a second embodiment of the connecting means between a spoke and a connecting member;

Figure 11b is a schematic view of Figure 1a where the connection means is exploded.

Figure 12a is a perspective view of a third embodiment of the connection means between a spoke and a junction member; Figure 12b is a schematic view of Figure 12a where the connection means is exploded.

Figure 13 shows a sectional view of an enlargement of a connecting piece between two turnbuckles;

The figures are not drawn to scale. In the figures, identical or similar elements bear the same references.

Detailed Description of Preferred Embodiments

The present invention relates to a vehicle wheel such as a bicycle wheel but also a system of different elements that interact together to form the wheel. Thus, a system according to the invention comprises a radius provided with specific fastening means allowing it to be easily replaced in a vehicle wheel.

As illustrated in Figures 1 and 2, the invention therefore relates to a wheel comprising:

a hub body 1;

a rim 2;

and also comprising a plurality of pairs of spokes, each pair of spokes comprising two spokes 3a, 3b under tension, each spoke 3a, 3b including an end hub portion 51 tangentially disposed tangent to said hub body 1, each spoke 3a, 3b comprising a rim end 4 and a hub end 5, the two hub ends 5 of the spokes of each pair of spokes being coupled to each other by a joint member stabilized tangentially to said hub body 1, each junction J comprising voltage adjusting means for adjusting the voltage applied in said spokes 3a, 3b, said voltage adjusting means being adapted to vary the distance between the hub ends 5 of the spokes of the pair of spokes 3a, 3b and isometrically displacing said hub ends 5 with respect to said hub body 1.

In the wheel according to the invention, the spokes 3a, 3b, advantageously made of a high performance material intended to work mainly in tension such as a thermosetting matrix impregnated with carbon fibers, are therefore combined in pairs. The two spokes 3a, 3b of a pair of spokes are in fact coupled to each other. the other using a junction member J, arranged tangentially to the hub body 1, as shown in Figure 2. The vehicle wheel according to the invention is preferably a bicycle wheel. A wheel according to the invention can however be used in other types of vehicle, such as for example wheelchairs.

According to an advantageous embodiment, each spoke 3a, 3b comprises an end hub portion 51 arranged tangentially to said hub body 1. The spokes 3a, 3b are bent at their extremal hub portion 51 in order to conform tangentially to the hub body 1. For this purpose, the spokes 3a, 3b advantageously have flexibility in flexion at their extremal portion of the hub. hub 51. This flexural flexibility also allows optimum transmission of traction forces between the rim end 4 and the hub end 5 of the spokes 3a, 3b.

According to an advantageous embodiment the hub body 1 comprises a right lateral flange la and a left side flange lb whose planes are perpendicular to the axis of rotation of the wheel, a half of the J junction members being stabilized tangentially to the right lateral flange la, the other half being stabilized tangentially to the left lateral flange lb. The presence of two lateral flanges to which are fixed the spokes of the wheel in tension makes it possible to increase the lateral stiffness of the wheel, that is to say the stiffness in the direction parallel to the axis of rotation of the wheel.

Each pair of spokes 3a, 3b therefore intercepts a rim portion at an angle α as shown in Figure 1. The value of the angle a, the number of spokes and the material of the spokes are chosen so as to to give the wheel satisfactory mechanical properties, in particular as regards its stiffness, strength and weight. In Figure 1, there are six spokes on each side hub flange 1a, 1b and the angle a is 60 °.

[00039] The term "move isonrétriquement said ends of the hub 5 with respect to said hub body 1", it is meant that the two hub ends 5 are moved simultaneously by the voltage adjustment means ^of an identical distance from a repository integral with the hub body 1. In this way, the distance or the relative approximation between the two hub ends 5, and this by an isometric displacement of the two hub ends 5, provides a voltage adjustment at a time simultaneous and symmetrical in the two radii 3a. 3b constituting the pair of spokes. [00040] According to an advantageous embodiment, ^the joint member J of each pair of spokes comprises a rigging screw provided with a threaded central tube 6 at its two ends, a threaded rod 7a, 7b being screwed to each of said two ends , each of the two threaded rods 7a, 7b being coupled to ^the hub end 5 with a radius of the pair of spokes 3a, 3b. The coupling may for example be performed using rings 71a, 71b located at the ends of the threaded rods 7a, 7b In this type of turnbuckle, one of the two threaded rods 7a, 7b has a thread on the right, while the other has a left-hand thread. In this way, a relative rotation of the tapped central tube 6 with respect to the threaded rods 7a, 7b makes it possible to bring the two rods 7a, 7b closer together or away from each other, in the direction of rotation of the tapped central tube 6. The ends With the hubs 5 of the two spokes 3a, 3b being coupled to the ends of these threaded rods 7a, 7b, the manual rotation of the tapped central tube 6 thus brings about a relative approximation or removal of the hub ends of the spokes 3a, 3b and 3b. therefore an increase or decrease in the tension in the spokes 3a, 3b. The coupling of the two spokes 3a, 3b to a connecting member such as a turnbuckle stabilized tangentially to the hub is therefore a means at once robust and fast to adjust the tension in each spoke pair 3a, 3b of the wheel. The voltage is in effect symmetrically and simultaneously adjusted for the two rays 3a, 3b ^of a pair of radius. The wheel according to ^the invention therefore provides a mechanical arrangement is both simple and modular, wherein a possibly damaged parts, such as a rays, for example, can be easily replaced. In addition, the connecting members necessary to adjust the spoke tension do not impact the moment of inertia of the wheel too much, by their proximity to the hub body 1 and thus the geometric center of the wheel. Furthermore, the path of the spokes 3a, 3b, which meet tangentially with the hub body 1 via the junction member, makes it possible to stress the spokes 3a, 3b essentially in tension during the transmission of a torque between the hub body 1 and the rim 10. Such a type of mechanical stress is particularly advantageous when the spokes 3a, 3b are made of a high performance material intended to work mainly in tension, such as a thermosetting resin impregnated with carbon fibers.

In order to mount the wheel and adjust the voltage in the different radii, it is necessary to couple the spokes in pairs using different connecting members. ^The connecting member of each pair of spokes 3a. 3b can then be arranged tangentially to the hub body 1. the rim ends 4 of each of the two spokes the pair of spokes being then attached to the rim. Once the various junction members J stabilized on the hub, the tension in the spokes can then be adjusted by actuating the adjustment means on G junction member J.

In an advantageous embodiment, the wheel according to the invention comprises three junction members J stabilized tangentially to the left flange of the hub body 1 and three junction members J stabilized tangentially to the right flange of the hub body 1. Such a wheel thus comprises six spokes connecting the rim to the left flange and six spokes connecting the rim to the right flange of the hub body 1. In such a configuration, the connecting members stabilized on the same flange of the hub body 1 then advantageously form between them angles substantially equal to 120 °. This equidistant arrangement of the connecting members, in conjunction with an angle α between the spokes 3a, 3b substantially equal to 60 °, ensures a uniform angular distribution of the different radii at the right and left flanges of the hub body 1, and therefore an optimal radial stiffness of the wheel.

In Figure 2, the hub body 1 comprises planar portions 8 to receive tangentially said connecting members J. The presence of such flat portions 8 makes it possible to ensure better tangential stabilization of the connecting members against the hub body 1. The length of the flat portions 8 is then advantageously equal to the length of said connecting members.

According to an advantageous embodiment, the bicycle wheel according to the invention comprises tangential retaining means of the junction members J on the hub body 1. Such means are configured to reduce or totally prevent a tangential displacement of the connecting members with respect to the hub body 1. These retaining means, in addition to the friction force existing between the pairs of spokes 3a, 3b and the hub body 1, contribute to the good transmission of the driving torque of the wheel between the hub body 1 and the rim 2. When the junction members are turnbuckles, the tangential retaining means of the connecting members advantageously comprise stabilizing lugs 9. Thus, when the connecting members are turnbuckles, two stabilizer lugs 9 may advantageously be positioned on each planar part 8 of the hub body 1. These two lugs 9 are advantageously spaced ^a distance nsablement equal to the length of the tapped central tube 6, which is then wedged tangentially to the hub body 1 between the two pins 9. In this configuration, the two threaded rods 7a, 7b of the turnbuckle rest on both lugs 9. The height of the lugs 9 is advantageously chosen so ^that there is play between the threaded central tube 6 and the flat portion 8 of the hub 1 COIPS in order to be able to actuate the central rotating tube threaded to adjust the tension of the spokes 3a, 3b.

In another embodiment, as shown in FIG. 3, the tangential retaining means comprise abutment surfaces 91. As with lugs 9, these abutment surfaces 91 can retain tangentially to the hub body 1 tapped central tube 6 dTin turnbuckle. Furthermore, a groove 92 may be machined in the hub body 1, in order to receive the hub ends 5 of the two spokes 3a, 3b coupled to the ends of these threaded rods 7a, 7b. In this configuration, the groove 92 then advantageously has a width L less than the diameter of the rings 71a. 71b threaded rods 7a, 7b of the turnbuckle. In this way, the rotation of the threaded rods 7a, 7b is blocked, which facilitates the adjustment in tension of the spokes 3a, 3b, which requires a relative rotation between said threaded rods 7a, 7b and the tapped central tube 6.

Figures 4 and 5 illustrate embodiments of the junction member J. The junction member J of each pair of spokes comprises at least two turnbuckles provided with a central tube 6 threaded at least one of its ends, said threaded rod 7a being screwed to said at least one of its ends, said threaded rod 7a being coupled to the hub end 5 of a radius of the pair of spokes 3a, 3b as shown in FIG. 5 The configuration of the connecting member J as represented in FIG. 5 comprises a first turnbuckle provided with a central tube 6 threaded at its two ends, a first threaded rod 7a being screwed to said hub end 5 of the spoke 3a. the pair of spokes 3a, 3b, a connecting piece 20 and a second turnbuckle provided with a central tube 6 threaded at both ends thereof, a first threaded rod 7b being connected to said hub end 5 of the spoke 3b of the pair of radii 3a, 3b. Advantageously, the connecting piece 20 may be an intermediate radius as shown in Figure 5. In this type ^of connecting member J, the first rigging screw comprises a threaded rod 7a which comprises a right-hand thread, while the second turnbuckle comprises a threaded rod which has a thread on the left. In this way, relative rotation of each threaded central tube 6 with respect to the threaded rod 7a, 7b allows movement of ^the hub end 5 of each spoke of the pair of spokes 3a, 3b independently of the other. Said voltage adjusting means can independently move said hub ends 5 relative to said hub body 1. The tension is then adjusted independent that is to say that the tension of one spoke can be changed without the tension of the other radius of the spoke pair is affected.

By "moving independently of one another said hub ends 5 relative to said hub body 1", it is meant that the two hub ends 5 are freely displaced by the tension adjusting means of a identical distance or not with respect to a reference secured to the hub body 1. In this way, G away or the relative approximation between the two hub ends 5, and this by a displacement of one or both hub ends 5, allows to obtain a voltage adjustment both simultaneous and symmetrical or independent and asymmetrical in the two spokes 3a, 3b constituting the pair of spokes.

The wheel according to the invention therefore offers the known advantages described in FIG. 1 and FIG. 2 such that a mechanical arrangement that is both simple and modular, in which a possibly damaged part, such as one of the spokes for example, can be replaced easily. In addition, the junction members J necessary for adjusting the tension of the spokes do not affect the moment of inertia of the wheel too much, because of their proximity to the hub body 1 and thus the geometric center of the wheel. wheel.

[00049] In the wheel according to the invention, the hub ends 5 of each spoke 3a, 3b must be coupled to F J joining member provided ^with a threaded rod 7a inserted into the threaded central tube 6. In one advantageous embodiment of the wheel as shown in Figures 6a, 6b. This coupling is achieved by the presence of a loop 51a at the hub end 5 of the spokes 3. This loop is then advantageously interlaced in a ring integral (or eye) 71a of the threaded rod 7a. Such a coupling with a loop 51a at ^the hub end 5 of the rays 3 is indeed particularly advantageous when the rays 3 are produced based on a high performance material intended to work mainly in traction, such as a thermosetting resin impregnated with carbon fibers. When tensioned 3a rays 3b, the present loop to ^the hub end is in fact essentially biased voltage, which ensures optimum strength of the coupling between the beam 3a, 3b and the threaded rod 7a of junction member. The loop 51a and the ring 71a together form the second connection means 57. Figures 7 and 8 show a perspective view and a sectional view of a rim comprising a fastening means 1 1. At the rim, the spokes 3a, 3b can be coupled to the fixing rod 1 1 attached to the rim 10 of the wheel. The fastening means 1 1 is then advantageously a removable rod inserted into the internal cavity of the rim via a through hole 12 in the side wall 13 of the rim. As at the hub body 1, the coupling between the spoke 3a. 3b and the rim 10 is advantageously ensured by the presence ^of a loop 14 at the end of the spoke 3a, 3b, interlaced this time to the fixing rod 1 1. The coupling between the spoke 3a. 3b and the rim is mechanically reversible, which allows easy replacement, for example in case of damage to the radius. The presence of a hole in the side wall 13 to insert the fastening rod 1 1 is advantageous because it preserves the upper wall 15 of the rim, which allows the rim to be compatible with a tire "tubeless" . This solution, which allows to mount a tubeless tire on the wheel, is indeed very popular, especially for cyclists practicing their sport at a high level. In order to ensure the mechanical strength of the coupling between the spokes 3a, 3b and the rim 10, a mechanical reinforcement 18 between the two side walls 13 at the lateral hole 12 is advantageously provided.

The rim 10 of the wheel according to the invention may further comprise a removable aerodynamic flange system, as disclosed in US 2010/0253132. In such a system, a right aerodynamic hull 15 and a left aerodynamic hull 16 are attached to the side walls 13 of the rim. The two aerodynamic hulls 15, 16 meet in a junction zone 17 so as to form an aerodynamic flange. The aerodynamic hulls 15, 16 furthermore comprise through-holes for the passage of the spokes 3a. 3b. The two shells are advantageously fixed to each other and to the side walls 13 in a mechanically reversible manner, for example using screws. Disassembly aerodynamic hulls then allows ^easy access to the inner annular cavity of the rim 10 and thus the coupling area between 3a rays, 3b and the fixing pin 11, which is useful when for example the replacement damaged radius 3a, 3b.

Figures 9 and 10 show a perspective view of a rim comprising a variant of fixing means 11. At the rim, the spokes 3 can be coupled to fastening means 11 such as screws fixed to the rim 10 and a threaded cylinder fitting the through hole of the wheel. As illustrated in Figure 9, means fixing 1 1 are then advantageously two removable screws in a threaded cylinder in the internal cavity of the rim 10 via a through hole 12 in the side wall 13 of the rim 10. As at the hub body 1, the coupling between the 3 and the rim 10 is advantageously provided by the presence of a first connecting means 14, a loop 14 at the end of the spoke 3, this time interlaced with the fastening means 1 1. The coupling between the spoke 3 and the rim 10 is mechanically reversible, which allows easy replacement, for example in case of damage to the radius. The presence of a hole in the side wall 13 to insert the fastening means 1 1 is advantageous because it allows to preserve the upper wall 15 of the rim, which allows the rim to be compatible with a tire "tubeless" . This solution, which allows to mount a tubeless tire on the wheel, is indeed very popular, especially for cyclists practicing their sport at a high level. In order to ensure the mechanical strength of the coupling between the spokes 3 and the rim 10, a mechanical reinforcement 19 between the two side walls 13 at the side hole 12 is advantageously provided.

According to an advantageous embodiment, the rim 10 comprises a mechanical reinforcement 19 which reinforces said fastening means 1 1 of said rim 10. This mechanical reinforcement 19 can support the fastening means 1 1 when the wheel system is subjected to powerful forces during its use. Indeed, the radius 3 by its rim end 4 will constantly pressure the fastening means 1 1 which could break if they had no support from the mechanical reinforcement 19.

According to a particular embodiment, the bicycle wheel system comprises a rim 10 provided with fastening means 1 1, said fastening means 1 1 being arranged to be coupled to said first connection means 14 of the end of the wheel. rim 4 of said spoke 3.

According to a non-illustrated embodiment, the first connection means 14 is a threaded rod with an eye, the eye connecting the threaded rod and the fastening means 1 1, said threaded rod being screwed at the end of rim 4 threaded. This system makes it possible to unscrew the spoke 3 from the rim 2 without having to disassemble the fastening means 1 1, the first connecting means 14 and the removable aerodynamic flanges 16, 17, which is therefore particularly advantageous when a spoke 3 is damaged and must be changed.

The rim 10 of the wheel according to the invention may further comprise a removable aerodynamic flange flange system. In such a system, a hull right aerodynamic 16 and a left aerodynamic hull 17 are attached to the side walls 13 of the rim. The two aerodynamic hulls 16, 17 meet in a junction zone 18 so as to form an aerodynamic flange. Aerodynamic shells 16, 17 otherwise comprise through holes for the ray path 3. The two shells are advantageously fixed Moon to ^another and to the side walls 13 so mechanically reversible, for example using means attachment 11. the disassembly aerodynamic hulls then allows ^easy access to the inner annular cavity of the rim 10 and thus the coupling area between the spokes 3 and the fixing means 11, which is useful when e.g. replacing a damaged spoke 3,

According to a non-illustrated embodiment, the removable aerodynamic flange system may comprise more than one right hull 16 and more than one left hull 17. The splitting of the right hull 16 and the left hull 17 into several straight hulls and smaller left allows when ^a shell is damaged on a specific part, simply remove the specific part that is on a multiple shells and replace this flange without removing the whole of the starboard hull or left.

[00058] Figures 1 to Les, 1 lb illustrate another means for performing the second connection means 57. The second connecting means 57 is formed of the hub end 5 of the beam 3 provided with ^a thread 58 which is introduced into the threaded end of the center tube 6 ^of a turnbuckle. This embodiment makes it possible to reduce the number of parts used in the modular bicycle wheel system.

[00059] Figures 12a, 12b illustrate a further variant of the second connecting means according to ^the invention. The second connection means 57 comprises a hub end 5 provided with a thread 58 of a radius 3a, 3b. and a tapped end 59 of a threaded rod 7a. The thread 58 of the hub end 5 is screwed to the threaded end 59 of a threaded rod 7a.

According to another embodiment not illustrated, the system may comprise a junction member J as shown in Figure 5 comprising two turnbuckles each provided with a central tube 6 threaded at at least one of its ends, the tubes central 6 being connected by a connection piece 20, said threaded rod 7a being screwed to said at least one of their ends, said threaded rod 7a being coupled to the end of hub 5 of a radius of the pair of spokes 3a. 3b. The connecting piece 20 may be a swivel which allows the voltage adjusting means to ^be actuated in rotation freely from each other and thus also allow independent adjustment of the tension of each turnbuckle and thus free movement of the ends of hub 5. According to another embodiment shown in FIG. 13, the joining member J comprises two central tubes 6a, 6b, a connecting piece 20, the central tubes 6a, 6b housing a thread 58 of a hub end 5 of a spoke 3a, 3b. The connecting piece 20 comprises an outer case 20 which connects the two central tubes 6a, 6b. The connecting piece 20 may be in a locking position or in a free position. The locking position will secure the two central tubes 6 relative to each other. Indeed, in said locking position, the connecting piece 20 locks the turnbuckles between. When the external case 20 is in the locking position and that ^it is actuated in rotation by means of a tightening tool such as a wrench, the hub ends isometrically and 5 move simultaneously relative to the hub body 1. When the connecting piece 20 is in the free position, the two turnbuckles can be actuated in rotation independently from one another and thus the hub ends 5 move freely relative to the hub body 1. This configuration comprising a connecting piece makes it possible to adjust the tension of a specific radius and / or a pair of spokes and thus allows a greater flexibility in adjusting the tension.

It is understood that the present invention is in no way limited to the embodiments described above and that many modifications can be made without departing from the scope of the appended claims.

Claims

claims

1. Vehicle wheel comprising

a hub body (1);

a rim (2);

characterized in that it comprises a plurality of pairs of spokes, each pair of spokes comprising two spokes (3a, 3b) under tension, each spoke (3a, 3b), each spoke (3a, 3b) including a rim end ( 4) and a hub end (5), the two hub ends (5) of the spokes of each pair of spokes being coupled to each other by a connecting member (6, 7a, 7b) stabilized tangentially to said hub body (1), each junction member (6, 7a, 7b) comprising voltage adjusting means for adjusting the voltage applied in said spokes (3a, 3b), said voltage adjusting means being adapted to vary the distance between the hub ends (5) of the two spokes of the pair of spokes (3a, 3b) by moving said hub ends (5) relative to said hub body (1).

A vehicle wheel according to claim 1, wherein each spoke further comprises an end hub portion (51) disposed tangentially to said hub body (1).

Vehicle wheel according to Claim 1 or 2, in which the hub body (1) comprises a right lateral flange (1a) and a left lateral flange (1b) whose planes are perpendicular to the axis of rotation of the vehicle. the wheel, one half of the connecting members (6, 7a, 7b) being stabilized tangentially to the right lateral flange (1a), the other half being stabilized tangentially to the left lateral flange (1b).

4. Vehicle wheel according to any one of the preceding claims, wherein said connecting member of each pair of spokes comprises at least one turnbuckle provided with a central tube (6) threaded at both ends, a threaded rod (7a , 7b) being screwed to each of said two ends, each of the two threaded rods (7a, 7b) being coupled to the hub end (5) of a radius of the pair of spokes (3a, 3b).

5. Vehicle wheel according to ^one of the preceding claims, wherein said connecting member of each pair of spokes comprises at least two turnbuckles fitted with a central tube (6) tapped at at least one of its ends, said rod threaded (7a) being screwed to said at least one end thereof, said threaded rod (7a) being coupled to the hub end (5) ^of a radius of the pair of spokes (3a, 3b).

6. Vehicle wheel according to any one of the preceding claims, the hub body (1) comprises planar portions (8) for tangentially receiving said connecting members.

7. Vehicle wheel according to any one of the preceding claims, wherein tangential stabilization means of the connecting members are provided on the hub body (1).

8. Vehicle wheel according to claim 7, wherein the tangential stabilization means of the connecting members comprise stabilizing pins (9).

Vehicle wheel according to claim 7, wherein the tangential stabilization means of the connecting members comprise abutment surfaces (91).

Vehicle wheel according to one of the preceding claims, wherein the hub end (5) of each spoke (3a, 3b) comprises a loop coupled to said connecting member (6, 7a, 7b).

1 1. Vehicle wheel according to ^one of the preceding claims, wherein the end rim (4) of each beam (3a, 3b) is coupled mechanically reversible manner to the rim (2) of the wheel.

Vehicle wheel according to claim 9, wherein the rim end (4) of each spoke (3a, 3b) comprises a connection means forming a loop coupled to fastening means on the rim,

13. Vehicle wheel according to any one of the preceding claims, wherein the spokes (3a, 3b) are made using a thermosetting resin impregnated with carbon fibers.

14. A vehicle wheel system comprising at least a first radius arranged to cooperate with at least a second radius, said at least one radius comprising a rim end and a hub end, said rim end being arranged to be connected in such a way reversible with the rim, said rim end being provided with a first connecting means arranged to be coupled to a fastening means of said rim, said connection means forming a loop, said hub end being arranged to be connected with reversible manner with a connecting member, and comprising a second connecting means complementary to a third connection means of said connecting member.

A vehicle wheel system according to claim 14 comprising at least two spokes arranged to form at least one pair of live spokes, each spoke including a rim end and a hub end, said rim end being arranged to be connected reversibly with the rim, said rim end being provided with a first connection means arranged to be coupled to a fastening means of said rim, said connection means forming a loop, said hub end being arranged to be reversibly connected with a connecting member, and said hub end (5) comprising second connecting means complementary to a third connecting means of said connecting member.

16. System according to claims 14 or 15 comprising a rim provided with a fixing means, said fixing means being arranged to be coupled to said first connecting means of the rim end of said spoke.

17. The system of claim 16 further comprising at least one connecting member.

18. System according to claim 17, wherein the junction member comprises one or more voltage adjusting means selected from the group of threaded ends, threaded end pieces, turnbuckle cages, eye tips or hooks arranged to adjust the applied voltage in said rays.

19. The system of claim 18, when dependent on claim 17 comprising a mechanical reinforcement, arranged to be disposed in the rim, and reinforce said fastening means of said rim.

20. System according to one of claims 17, 18, 19 ^when they depend on Claim 17, further comprising one or more aerodynamic flanges adapted to be attached to said rim.

Bicycle comprising a vehicle wheel according to any one of claims 1 to 14.

22. A wheelchair comprising a vehicle wheel according ^to one of any claims 1 to 14.