FR3001519A3 - Wheel for use in gear box of power unit, has points of contact, where side of point of contact is perpendicular to axis of rotation of input shaft, and top of point of contact forms point directed in direction of rotation of wheel - Google Patents

Wheel for use in gear box of power unit, has points of contact, where side of point of contact is perpendicular to axis of rotation of input shaft, and top of point of contact forms point directed in direction of rotation of wheel Download PDF

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FR3001519A3
FR3001519A3 FR1300163A FR1300163A FR3001519A3 FR 3001519 A3 FR3001519 A3 FR 3001519A3 FR 1300163 A FR1300163 A FR 1300163A FR 1300163 A FR1300163 A FR 1300163A FR 3001519 A3 FR3001519 A3 FR 3001519A3
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Prior art keywords
contact
blade
point
wheel
rotation
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French (fr)
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Janick Simeray
Franck Andre Marie Guigan
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Individual
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Individual
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32Friction members
    • F16H55/52Pulleys or friction discs of adjustable construction
    • F16H55/54Pulleys or friction discs of adjustable construction of which the bearing parts are radially adjustable
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H13/00Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
    • F16H13/10Means for influencing the pressure between the members
    • F16H13/14Means for influencing the pressure between the members for automatically varying the pressure mechanically
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32Friction members

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

The wheel has a crown (1) that turns around a main axis of an input shaft (10). A bearing support (6) e.g. interior surface of a cylinder, is arranged with regard to the crown. A point of contact is provided between the crown and a blade (21). Another point of contact is provided between a friction surface of the blade and the bearing support. A side of the latter point of contact is perpendicular to an axis of rotation of the input shaft and is tangent on the friction surface. A top of the latter point of contact is arranged to form a point directed in a direction of rotation of the wheel.

Description

Bague de transmission de mouvement ,&__Lnnine d'application L'invention est une bague de transmission de mouvement destinée à se substituer aux engrenages Problème posé Les engrenages sont bruyants et réclament dans de nombreux cas une lubrification, ce qui augmente le cout de fabrication des dispositifs qui en comportent. Leur rendement n'est pas parfait An...antérieur On connait les engrenages depuis très longtemps. Ils existent sous de très nombreuses types comme par exemple les engrenages â roue et crémaillère, les engrenages parallèles ou cylindriques, les engrenages concourants ou coniques, les engrenages gauches, les lanternes et rouets, et l'on peut faire de nombreux trains d'engrenages comme des trains simples, planétaires (ou épicycloidaux) ou sphériques. Ils sont utilisés dans les transmissions de mouvement comme les boites de vitesses et les différentiels. On connaît la transmission à variation continue décrite dans les demandes FR 12/02953, FR 12/03175, FR/12/03362 et FR/13/00008. Ces demandes décrivent une roue constituée d'une structure centrale dite couronne munie d'une pluralité d'éléments dits aubes coopérant avec une surface dite support de roulement, et exposent que la coopération de ladite aube et ledit support de roulement peut avantageusement se faire par la friction de l'aube avec le support de roulement lorsque ces deux éléments ont entre eux un coefficient de friction statique élevé, car dans certaines dispositions que l'homme de l'art sait déterminer facilement, cette friction suffit à empêcher que ladite aube glisse sur ledit support de roulement. Description sommaire des dessins L'invention sera bien comprise, et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui va suivre, laquelle est illustrée par les figures 1 à 4 qui représentent toutes des dispositifs ou parties de dispositifs selon l'invention. La figure 1 est une vue en perspective d'une bague selon l'invention, Elle comporte un arbre 10 solidaire d'une couronne 1, quatre aubes 21, 22, 23, et 24 pouvant pivoter autour d'un axe 30 parallèle à celui de rarbre 10, et une couronne 4e blocage 7 comportant quatre ergots 71,72, 73, et 74 limitant la rotation des quatre aubes respectivement 21, 22, 23, et 24. Le sens de rotation est indiqué par la flèche courbe, et la force notée F transmise par l'aube 23 au support de roulement 6 est orientée vers la gauche_ Elle comporte une composante faisant avancer la roue vers la droite, et une autre compressant l'aube avec le support de roulement 6. chacune de ces deux composantes est d'une intensité proportionnelle au couple de rotation reçu par l'arbre primaire 10. La figure 2 est une vue en perspective de l'aube 23 de la bague de transmission de la figure 1. La figure 3 est une vue en perspective de l'arbre 10 et de la couronne 1 de la bague de transmission de la figure I. La figure 4 est une vue en perspective de la couronne de blocage 7 de la bague de transmission de la figure 1. Exposé de l'invention L'invention est une roue constituée d'une structure centrale dite couronne 1 tournant autour d'un axe principal dit arbre primaire 10, comportant au moins un élément dit aube 21 comportant une surface de coopération dite surface de friction, coopérant avec une surface dite support de roulement 6 comme le sol, la surface intérieure ou extérieure d'un arbre entraîné, ou une courroie, une aube 21 pouvant prendre au moins deux positions par rapport à la couronne 1, allant d'une position dite fermée à une position dite ouverte, caractérisée par le fait et que le triangle dont deux sommets sont - un point de contact entre ladite couronne 1 et ladite aube 21 - un point de contact entre ladite surface de friction de ladite aube 21 et ledit support de roulement 6, et dont un côté est perpendiculaire à l'axe de rotation dudit arbre primaire 10 et tangent à ladite surface friction à ce point de contact, a audit point de contact un sommet formant une pointe orientée dans le sens de rotation de la roue. Selon d'autres caractéristiques de l'invention : le dispositif comporte un moyen dit moyen de blocage 7 limitant la distance entre ladite surface de friction de l'aube 21 et l'axe de l'arbre primaire 10; - ladite surface de friction est une surface de révolution autour de l'axe de rotation de l'arbre primaire 10; le coefficient de friction statique entre la surface de friction de l'aube 21, et la surface du support de roulement 6 mise en contact avec l'aube 21 est supérieur à 0.5; la surface de friction de l'aube 21 est en aluminium; la surface du support de roulement 6 mise en contact avec l'aube 2l est en al - le support de roulement est la surface intérieure d'un cylindre; - le support de roulement est la surface extérieure d'un cylindre; - Le dispositif est une boite de vitesses comportant une roue selon l'invention le dispositif est une machine comportant une roue selon l'invention Description détaillée de l'invention Le principe de l'invention consiste à utiliser l'important coefficient de friction comme l'aluminium par exemple,, pour provoquer un grippage entre une roue et le support de roulement qu'elle entraîne ou par lequel elle est entraînée. En effet dans ce cas, il n'est plus nécessaire 5 d'avoir des dents. Pour que le grippage se produise, il faut que le couple transmis à l'aube par l'arbre primaire 10 donne naissance à une pression importante entre la surface de coopération de l'aube avec le support de roulement 6. Cette surface de coopération, entre l'aube et le support de roulement 6 dite surface de friction, est 10 avantageusement obtenue par le fait que deux matériaux, celui de l'aube et celui du support de roulement, ont ensemble un coefficient de friction statique (relié â la force nécessaire pour commencer le mouvement de glissement) élevé. Lorsque ces deux matériaux sont l'aluminium, ce coefficient de friction statique se situe entre 1.05 et 1.35, et le coefficient de friction dynamique (force moyenne mesurée durant le 15 mouvement) est de 1.4. En règle générale, il est avantageux que le coefficient de friction statique entre la surface de l'aube coopérant avec le support de roulement 6, et la surface du support de roulement 6 mise en contact avec l'aube soit supérieur à 0.5. Ladite surface de friction pourrait être fixe, mais il faudrait alors contraindre la distance eutie l'axe de rotation de l'arbre 10 et le support de roulement, ce qui diminuerait inutilement le 20 rendement lorsque le couple transmis est très faible. L'organisation la plus avantageuse est celle dans laquelle la pression qui s'exerce entre la roue et le support de roulement 6 est proportionnelle au couple transmis. Il faut pour cela que la roue comporte au moins une aube 21 comportant une surface de coopération dite surface de friction, pouvant prendre au moins deux positions par rapport à la 25 couronne 1, allant d'une position dite fermée à une position dite ouverte. Le débattement entre ces deux positions est avantageusement très faible, mais il doit exister pour que le couple transmis à l'aube par l'arbre primaire 10 donne naissance à une pression entre la surface de coopération de l'aube avec le support de roulement 6 qui soit suffisante pour provoquer le grippage entre ces deux éléments. Ce grippage ce obtenu à la condition que l'oneitation de la force exeeee çorfespmde ait coefficient de grippage entre les deux matériaux assurant la coopération entre ces deux éléments. L'homme de l'art sait calculer cet angle en fonction des matériaux choisis. Il suffit alors de dessiner le dispositif de telle sorte que le triangle dont deux sommets sont un point de contact entre ladite couronne 1 et ladite aube 21, - un point de contact entre ladite surface de fiiction de ladite aube 21 et ledit support de roulement 6, et dont un côté est perpendiculaire à l'axe dudit arbre primaire 10 et tangent à ladite surface friction â ce point de contact, de telle sorte que ledit point de contact soit un sommet du triangle formant une pointe orientée dans le sens de rotation de la roue. Il est avantageux que le dispositif comporte un moyen dit moyen de blocage 7 limitant la distance entre ladite surface de friction de l'aube 21 et l'axe de l'arbre primaire 10, afin d'empêcher qu'une aube qui n'est pas en contact avec le support de roulement de trop s'écarter de sa position fermée, car un écartement trop important provoquerait un choc lors de l'arrivée de 10 l'aube 21 sur le support de roulement 6. Lorsque la bague de transmission selon l'invention coopère avec un support de roulement 6 parallèle à son axe de rotation, ladite surface de friction est une portion de cylindre, mais le support de roulement peut aussi être conique par exemple. Dans ce cas la surface de friction est également conique.The invention relates to a motion transmission ring intended to replace gears. Problem posed The gears are noisy and in many cases require lubrication, which increases the cost of manufacturing the devices. who have them. Their performance is not perfect An ... We have known gears for a very long time. They exist in many types such as wheel and rack gears, parallel or cylindrical gears, concurrent or conical gears, left gears, lanterns and spinning wheels, and many gear trains can be made. like simple, planetary (or epicyclic) or spherical trains. They are used in motion transmissions like gearboxes and differentials. The continuously variable transmission described in applications FR 12/02953, FR 12/03175, FR / 12/03362 and FR / 13/00008 is known. These applications describe a wheel consisting of a central structure called a crown provided with a plurality of so-called vanes elements cooperating with a surface known as a bearing support, and expose the cooperation of said blade and said bearing support can advantageously be by the friction of the blade with the bearing support when these two elements have between them a high coefficient of static friction, because in certain provisions that the person skilled in the art can easily determine, this friction is sufficient to prevent said blade from sliding on said bearing support. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood, and other objects, advantages and characteristics thereof will appear more clearly on reading the description which follows, which is illustrated by FIGS. 1 to 4 which all represent devices or parts of devices according to the invention. FIG. 1 is a perspective view of a ring according to the invention. It comprises a shaft 10 integral with a ring 1, four vanes 21, 22, 23, and 24 being able to pivot about an axis 30 parallel to that 10 and a fourth locking ring 7 having four lugs 71, 72, 73, and 74 limiting the rotation of the four vanes respectively 21, 22, 23, and 24. The direction of rotation is indicated by the curved arrow, and the force noted F transmitted by the blade 23 to the bearing support 6 is oriented to the left_ It comprises a component advancing the wheel to the right, and another compressing the blade with the bearing support 6. each of these two components is of an intensity proportional to the rotational torque received by the primary shaft 10. FIG. 2 is a perspective view of the vane 23 of the transmission ring of FIG. 1. FIG. 3 is a perspective view of FIG. the shaft 10 and the ring 1 of the transmission ring of FIG. e 4 is a perspective view of the locking ring 7 of the transmission ring of FIG. 1. SUMMARY OF THE INVENTION The invention is a wheel consisting of a central structure called a crown 1 rotating around a main axis said primary shaft 10, comprising at least one element called blade 21 having a so-called friction surface of cooperation, cooperating with a surface said rolling support 6 as the ground, the inner or outer surface of a driven shaft, or a belt , a blade 21 which can take at least two positions relative to the ring 1, ranging from a so-called closed position to a so-called open position, characterized by the fact that the triangle whose two vertices are - a point of contact between said ring 1 and said blade 21 - a point of contact between said friction surface of said blade 21 and said bearing support 6, and one side of which is perpendicular to the axis of rotation of said primary shaft 10 and tangent at said friction surface at this point of contact, at said point of contact a vertex forming a point oriented in the direction of rotation of the wheel. According to other features of the invention: the device comprises means said locking means 7 limiting the distance between said friction surface of the blade 21 and the axis of the primary shaft 10; said friction surface is a surface of revolution about the axis of rotation of the primary shaft; the coefficient of static friction between the friction surface of the blade 21, and the surface of the bearing support 6 brought into contact with the blade 21 is greater than 0.5; the friction surface of the blade 21 is made of aluminum; the surface of the bearing support 6 in contact with the blade 21 is in al - the bearing support is the inner surface of a cylinder; - the bearing support is the outer surface of a cylinder; - The device is a gearbox comprising a wheel according to the invention the device is a machine comprising a wheel according to the invention Detailed description of the invention The principle of the invention is to use the important coefficient of friction as the aluminum, for example, to cause a seizure between a wheel and the bearing support that it drives or by which it is driven. In this case, it is no longer necessary to have teeth. For seizing to occur, it is necessary that the torque transmitted to the blade by the primary shaft 10 gives rise to a significant pressure between the cooperation surface of the blade with the bearing support 6. This cooperation surface, between the blade and the bearing support 6, said friction surface, is advantageously obtained in that two materials, that of the blade and that of the bearing support, have together a static coefficient of friction (connected to the force necessary to start the sliding movement) high. When these two materials are aluminum, this coefficient of static friction is between 1.05 and 1.35, and the dynamic coefficient of friction (average force measured during the movement) is 1.4. As a rule, it is advantageous that the static coefficient of friction between the surface of the blade cooperating with the bearing support 6, and the surface of the bearing support 6 placed in contact with the blade is greater than 0.5. Said friction surface could be fixed, but it would then be necessary to constrain the distance between the axis of rotation of the shaft 10 and the bearing support, which would unnecessarily reduce the efficiency when the transmitted torque is very low. The most advantageous organization is that in which the pressure exerted between the wheel and the bearing support 6 is proportional to the torque transmitted. This requires that the wheel comprises at least one blade 21 having a so-called friction surface friction surface, which can take at least two positions relative to the ring 1, from a so-called closed position to a so-called open position. The clearance between these two positions is advantageously very small, but it must exist for the torque transmitted to the blade by the primary shaft 10 gives rise to a pressure between the cooperation surface of the blade with the bearing support 6 which is sufficient to cause seizure between these two elements. This seizing this obtained on the condition that the oneitation of the force exeeee çorfespmde has coefficient of seizing between the two materials ensuring the cooperation between these two elements. Those skilled in the art can calculate this angle according to the chosen materials. It is then sufficient to draw the device so that the triangle, whose two vertices are a point of contact between said ring 1 and said blade 21, a point of contact between said surface of said blade 21 and said bearing support 6 and one side of which is perpendicular to the axis of said primary shaft 10 and tangential to said friction surface at this point of contact, such that said point of contact is an apex of the triangle forming a point oriented in the direction of rotation of the wheel. It is advantageous for the device to comprise a means 7 for blocking said means limiting the distance between said friction surface of the blade 21 and the axis of the primary shaft 10, so as to prevent a blade which is not not in contact with the bearing support too much to deviate from its closed position, because a too large spacing would cause an impact upon the arrival of the blade 21 on the bearing support 6. When the transmission ring according to the invention cooperates with a bearing support 6 parallel to its axis of rotation, said friction surface is a cylinder portion, but the bearing support can also be tapered for example. In this case the friction surface is also conical.

15 La règle générale est que ladite surface de friction est avantageusement une surface de révolution autour de l'axe de rotation de l'arbre primaire 10. Tous les moyens peuvent être utilisés pour assurer la mobilité de l'aube 21 par rapport à l'arbre primaire 10, comme un coulissement, un déplacement libre effile deux butées, mais le moyen préféré est la rotation autour d'un axe. Cet axe est avantageusement parallèle à l'axe de rotation 20 de l'arbre primaire dans le cas où le support de roulement 6 est parallèle à cet axe de rotation. On peut aussi réaliser des transmissions avec renvoi d'angle, dans le cas où le support de roulement 6 est conique. Dans ce cas, l'axe de rotation de l'aube passe avantageusement par le sommet du cône considéré. Une solution recommandée consiste à ce que la surface de friction de l'aube 21 et/ou que la 25 surface du support de roulement 6 mise en contact avec l'aube 21 soient en aluminium, afin d'obtenir un coefficient de friction élevé. Le support de roulement peut être un plan, ou la surface intérieure ou intérieure d'un cylindre ou d'un cône_ Sans sortir du cadre de la présente invention, la pression de la surface de friction de l'aube 21 sur 30 le suppon de roulemaeut 6 peut être obtenue (gi dideilike par tous, moyens, comme un rappel élastique, et/ou la force centrifuge. L'homme de l'art peut avantageusement concevoir une aube dont la farce centrifuge ne modifie pas sensiblement la position_ On peut fabriquer des bagues de transmission selon l'invention en matière plastique, en prévoyant une coopération par friction soit par un revêtement non glissant de l'un ou des deux 35 éléments que sont la surface de friction de l'aube 21 et le support de roulement 6, soit un insert d'aluminium ou d'autres matériaux à fort coefficient de friction sur l'un ou l'autre de ces éléments. Il est recommandé de disposer plusieurs aubes 21, 22 et suivantes pour obtenir un fonctionnement régulier. la plupart des géométries d'aubes décrites dans les demandes FR 5 12/02953, FR 12/03175, FR/12/03362 et FR/13/00008 sont applicables à la présente invention. Pour que la bague de transmission fonctionne dans les deux sens, il suffit de combiner des aubes fonctionnant dans un sens et d'autres fonctionnant dans l'autre sens. Cela permet par exemple d'avoir un frein moteur ou d'ajouter un mécanisme de roue libre. Une bague selon l'invention peut aussi être couplée avec un embray e centrifuge ou tous autres 10 dispositifs mécaniques connus. Les avantages par rapport aux engrenages sont très importants I. les vibrations et le bruit sont sensiblement affaiblis; 2. aucune lubrification n'est nécessaire; 3. il n'existe plus aucune possibilité de conflit entre dents et que cela permet de se passer de 15 dispositif de synchronisation pour les boites de vitesses; 4. toutes les bagues selon l'invention sont compatibles avec tous les arbres secondaires de toutes formes pourvu que ces derniers aient une surface de coopération à coefficient de friction suffisant 5. et le coût de fabrication est très bas puisqu'il n'est plus nécessaire d'usiner les 20 composants, lesquels peuvent être obtenus par simple estampage ou par injection. Applications L'invention s'applique à toutes celles des engrenages, et en particulier aux transmissions mécaniques de toutes natures, comme par exemple les palans, les crics, les treuils, les winches, les boites de vitesse et les variateurs continus ou par étages et d'une façon générale à tout 25 ensemble mécanique, à toute machine comportant une bague de transmission selon l'invention en lieu et place d'un engrenage traditionnel.The general rule is that said friction surface is advantageously a surface of revolution about the axis of rotation of the primary shaft 10. All the means can be used to ensure the mobility of the blade 21 with respect to the primary shaft 10, as a sliding, a free movement tilts two stops, but the preferred means is the rotation about an axis. This axis is advantageously parallel to the axis of rotation 20 of the primary shaft in the case where the bearing support 6 is parallel to this axis of rotation. It is also possible to make transmissions with a bevel gear, in the case where the bearing support 6 is tapered. In this case, the axis of rotation of the blade advantageously passes through the top of the cone considered. A recommended solution is that the friction surface of the blade 21 and / or the surface of the bearing support 6 in contact with the blade 21 be made of aluminum, in order to obtain a high coefficient of friction. The bearing support may be a plane, or the inner or inner surface of a cylinder or cone without departing from the scope of the present invention, the pressure of the friction surface of the blade 21 over the Roulemaeut 6 can be obtained (gi dideilike by all means, such as an elastic return, and / or the centrifugal force.A person skilled in the art can advantageously design a blade whose centrifugal stuffing does not substantially change the position_ We can manufacture transmission rings according to the invention made of plastic, by providing frictional cooperation either by a non-slip coating of one or both of the elements which are the friction surface of the blade 21 and the bearing support 6 an aluminum insert or other materials with a high coefficient of friction on one or the other of these elements It is recommended to have several blades 21, 22 and following to obtain a regular operation. geo Vane meanders described in applications FR 12/02953, FR 12/03175, FR / 12/03362 and FR / 13/00008 are applicable to the present invention. In order for the transmission ring to work in both directions, it is sufficient to combine blades operating in one direction and others operating in the other direction. This allows for example to have a motor brake or add a freewheel mechanism. A ring according to the invention may also be coupled with a centrifugal clutch or any other known mechanical device. The advantages over the gears are very important. I. the vibrations and the noise are substantially weakened; 2. no lubrication is necessary; 3. there is no longer any possibility of conflict between teeth and that it makes it possible to do without synchronization device for the gearboxes; 4. All the rings according to the invention are compatible with all the secondary shafts of all forms provided that they have a cooperation surface with sufficient friction coefficient 5. and the manufacturing cost is very low since it is no longer It is necessary to machine the components, which can be obtained by simple stamping or injection. Applications The invention applies to all gears, and in particular to mechanical transmissions of all kinds, such as hoists, jacks, winches, winches, gearboxes and continuous or stage dimmers and in general, to any mechanical assembly, to any machine comprising a transmission ring according to the invention in place of a conventional gear.

Claims (10)

REVENDICATIONS1. Roue constituée d'une structure centrale dite couronne 1 tournant autour d'un axe principal dit arbre primaire 10, comportant au moins un élément dit aube 21 comportant une surface de coopération dite surface de friction, coopérant avec une surface dite support de roulement 6 comme le sol, la surface intérieure ou extérieure d'un arbre entraîné, ou une courroie, une aube 21 pouvant prendre au moins deux positions par rapport à la couronne 1, allant d'une position dite fermée à une position dite ouverte, caractérisée par le tait que le triangle dont deux sommets sont - un point de contact entre ladite couronne 1 et ladite aube 21 un point de contact entre ladite surface de friction de ladite aube 21 et ledit support de roulement 6, et dont un côté est perpendiculaire à l'axe de rotation dudit arbre primaire 10 et tangent à ladite surface friction à ce point de contact, a audit point de contact un sommet formant une pointe orientée dans le sens de rotation de la roue.REVENDICATIONS1. Wheel consisting of a central structure called crown 1 rotating about a main axis said primary shaft 10, comprising at least one element called blade 21 having a so-called friction surface cooperation surface cooperating with a surface known as rolling support 6 as the ground, the inner or outer surface of a driven shaft, or a belt, a blade 21 which can take at least two positions relative to the ring 1, from a so-called closed position to a so-called open position, characterized by the was that the triangle whose two vertices are - a point of contact between said ring 1 and said blade 21 a point of contact between said friction surface of said blade 21 and said bearing support 6, and a side is perpendicular to the axis of rotation of said primary shaft 10 and tangent to said friction surface at this point of contact, at said point of contact a vertex forming a tip oriented in the direction of rotation of the wheel. 2. Roue selon la revendication 1 caractérisé par fait que le dispositif comporte un moyen dit moyen de blocage 7 limitant la distance entre ladite surface de friction de l'aube 21 et faxe de l'arbre primaire 10,2. Wheel according to claim 1 characterized in that the device comprises means said locking means 7 limiting the distance between said friction surface of the blade 21 and faxe of the primary shaft 10, 3. Roue selon la revendication 1 caractérisé par fait que ladite surface de friction est une surface de révolution autour de l'axe de rotation de l'arbre primaire 103. Wheel according to claim 1 characterized in that said friction surface is a surface of revolution about the axis of rotation of the primary shaft 10 4. Roue selon la revendication 1 caractérisé par fait que le coefficient de friction statique entre la surface de friction de l'aube 21, et la surface du support de roulement 6 mise en contact avec l'aube 21 est supérieur à 0.5.4. Wheel according to claim 1 characterized in that the coefficient of static friction between the friction surface of the blade 21, and the surface of the bearing support 6 placed in contact with the blade 21 is greater than 0.5. 5. Roue selon la revendication 1 caractérisé par fait que la surface de friction de l'aube 21 est en aluminium5. Wheel according to claim 1 characterized in that the friction surface of the blade 21 is aluminum 6. Roue selon la revendication 1 caractérisé par fait que la surface du support de roulement 6 mise en contact avec l'aube 21 est en aluminium6. Wheel according to claim 1 characterized in that the surface of the bearing support 6 placed in contact with the blade 21 is aluminum 7. Roue selon la revendication 1 caractérisé par fait que le support de roulement est la surface intérieure d'un cylindre7. Wheel according to claim 1 characterized in that the bearing support is the inner surface of a cylinder 8. Roue selon la revendication 1 caractérisé par fait que le support de roulement est la surface extérieure d'un cylindre8. Wheel according to claim 1 characterized in that the bearing support is the outer surface of a cylinder 9. Boite de vitesses comportant une roue selon l'invention9. Gearbox comprising a wheel according to the invention 10. Ensemble mécanique comportant une roue selon l'invention10. Mechanical assembly comprising a wheel according to the invention
FR1300163A 2013-01-25 2013-01-25 Wheel for use in gear box of power unit, has points of contact, where side of point of contact is perpendicular to axis of rotation of input shaft, and top of point of contact forms point directed in direction of rotation of wheel Withdrawn FR3001519A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1300163A FR3001519A3 (en) 2013-01-25 2013-01-25 Wheel for use in gear box of power unit, has points of contact, where side of point of contact is perpendicular to axis of rotation of input shaft, and top of point of contact forms point directed in direction of rotation of wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1300163A FR3001519A3 (en) 2013-01-25 2013-01-25 Wheel for use in gear box of power unit, has points of contact, where side of point of contact is perpendicular to axis of rotation of input shaft, and top of point of contact forms point directed in direction of rotation of wheel

Publications (1)

Publication Number Publication Date
FR3001519A3 true FR3001519A3 (en) 2014-08-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR1300163A Withdrawn FR3001519A3 (en) 2013-01-25 2013-01-25 Wheel for use in gear box of power unit, has points of contact, where side of point of contact is perpendicular to axis of rotation of input shaft, and top of point of contact forms point directed in direction of rotation of wheel

Country Status (1)

Country Link
FR (1) FR3001519A3 (en)

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