EP4359224A1 - Motor vehicle wheel comprising an aerodynamic trim - Google Patents

Motor vehicle wheel comprising an aerodynamic trim

Info

Publication number
EP4359224A1
EP4359224A1 EP22731727.8A EP22731727A EP4359224A1 EP 4359224 A1 EP4359224 A1 EP 4359224A1 EP 22731727 A EP22731727 A EP 22731727A EP 4359224 A1 EP4359224 A1 EP 4359224A1
Authority
EP
European Patent Office
Prior art keywords
panels
wheels
vehicle wheel
wheel
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22731727.8A
Other languages
German (de)
French (fr)
Inventor
Nicolas DELATTRE
Eric Palpacuer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stellantis Auto SAS
Original Assignee
Stellantis Auto SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stellantis Auto SAS filed Critical Stellantis Auto SAS
Publication of EP4359224A1 publication Critical patent/EP4359224A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B60B19/10—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group with cooling fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/002—Disc wheels, i.e. wheels with load-supporting disc body characterised by the shape of the disc
    • B60B3/007—Disc wheels, i.e. wheels with load-supporting disc body characterised by the shape of the disc in the intermediate section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/10—Disc wheels, i.e. wheels with load-supporting disc body apertured to simulate spoked wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
    • B60B7/0026—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins characterised by the surface
    • B60B7/0066—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins characterised by the surface the dominant aspect being the surface structure
    • B60B7/0086—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins characterised by the surface the dominant aspect being the surface structure having cooling fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
    • B60B7/04—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins built-up of several main parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/513—Cooling, e.g. of brakes

Definitions

  • the present invention relates to a motor vehicle wheel comprising an aerodynamic hubcap, as well as a motor vehicle equipped with such wheels and a method of aerodynamic testing with these wheels.
  • Motor vehicles generally have wheels equipped with rims made of stamped sheet steel or cast aluminum alloy, comprising a central part forming a hub, a circular outer contour receiving the tire, and a substantially flat radial part providing the connection between the hub and the circular contour.
  • the rim can receive a hubcap fixed to its outer face forming a single panel covering the whole of this face, or several panels distributed around the circumference.
  • the hubcaps ensure an aesthetic dressing, in particular for the steel rims presenting few possibilities of forms allowing to give them a style.
  • the hubcaps can also provide an aerodynamic function on the side of the vehicle, by preserving the air penetration coefficient Cx of this vehicle as well as possible in order to limit its energy consumption.
  • the wheels of motor vehicles generally receive a braking system comprising a disc or a brake drum, arranged in a relatively closed space just behind the radial connecting part, below the outer contour. Air passages in the hubcap are then provided aligned with openings in the radial part of the rim, allowing air to enter from the outer side to improve ventilation of the braking system, in order to ensure the evacuation calories during intense braking.
  • a known type of wheel presented in particular by the documents FR-A1 -3041898 and FR-A1 -3078922, comprises several openings distributed around the radial part of the rim, each receiving a panel forming an insert fixed to the contour of the opening, comprising a passage with blades arranged substantially radially.
  • the blades each have an inclination with respect to the transverse plane of the wheel, in order to ensure during its rotation an axial turbine effect which forces a flow of air towards the inside of the rim.
  • Another known type of wheel presented in particular by the document FR-A1 -3078286 comprises in each insert fitting on an opening of the rim a blade mounted on pivots arranged substantially radially, allowing a variable inclination automatically according to the temperature of the brake placed nearby to optimize the vehicle's aerodynamics, depending on driving conditions, or improve brake cooling if necessary.
  • this type of blade also requires a complete change of trim to adapt different models of blades.
  • the object of the present invention is in particular to avoid these problems of the prior art.
  • a motor vehicle wheel comprising a radial part connecting a hub to an outer circular contour, and a trim formed by one or more panels fixed to the radial part, these panels having air passages arranged opposite openings of the radial part, characterized in that the air passages of the panels comprise systems of blades ensuring an axial turbine effect during the rotation of the wheel, which are fixed by interlocking on these panels.
  • An advantage of this wheel is that in a simple and fast way, it is possible, by a simple interlocking on the panels remaining fixed on the wheel, to change blade systems comprising different versions of blades, to obtain hubcaps for the right and left sides of the vehicle, or to form hubcaps adapted to different types of vehicles.
  • the motor vehicle wheel according to the invention may also comprise one or more of the following characteristics, which may be combined with one another.
  • the blade systems include clipping devices ensuring maintenance of the interlocking on the panels.
  • each blade system advantageously comprises at its ends elastic lugs in a radial direction of the wheel, ensuring clipping.
  • each elastic lug may comprise at its end a boss which is compressed during assembly when passing over a lug of the panel.
  • the ends of the blade systems have shapes which fit by interlocking in the housings of the panels, ensuring orientation of these blade systems.
  • the panels and the blade systems are each made by molding a plastic material.
  • the invention also relates to a set of vehicle wheels comprising wheels having any one of the preceding characteristics, which comprises systems of blades with blades having symmetrical angles of incidence, corresponding to the two directions of rotation of the wheels .
  • the invention also relates to a set of vehicle wheels comprising wheels having any one of the preceding characteristics, which comprises systems of blades with blades having different angles of incidence provided for the same direction of rotation of the wheel.
  • the invention further relates to a motor vehicle fitted with wheels comprising any one of the preceding characteristics.
  • the invention also relates to a method for measuring the aerodynamics of a vehicle in a wind tunnel, which comprises between two measurements a step of changing only the blade systems, by arranging blades having different angles of incidence.
  • FIG. 1 has a wheel with inserts, comprising five openings distributed over the radial part, each covered by a trim panel;
  • FIG. 2 has a trim panel of this wheel provided for an opening
  • FIG. 3 shows a trim panel of a wheel according to the invention comprising five openings
  • FIG. 4 is a cross-sectional view along section plane IV-IV of this trim panel.
  • the outer side of the vehicle indicated by the arrow EXT, and the inner side are, depending on the lateral direction of this vehicle, respectively facing outwards and towards its centre.
  • Figures 1 and 2 respectively show a wheel with inserts and an insert made by casting an aluminum alloy, comprising around a main axis A a hub 4 comprising five bores receiving fixing nuts on the hub carrier of the vehicle , a circular outer contour 6, also designated rim, receiving the tire, and a radial part 8, also designated sail, comprising five branches forming radial bars connecting the hub to the outer contour.
  • Each space between two radial bars 8 comprises an air passage opening 10, presenting two surfaces which extend radially between the hub 4 and the outer contour 6, comprising a large surface 12 and a small surface 14 connected to each other by a connecting channel 16 oriented in a substantially tangential direction.
  • the hubcap of the wheel comprises five identical panels 20, each formed by a plastic molding, comprising an outer contour 22 which fits into that of each opening 10 following the large surface 12, the small surface 14 and the channel link 16.
  • Each trim panel has a closed part 24 covering the small surface 14 and the connecting channel 16, and an open part 26 covering the large surface 12 so as to allow a flow of air passing through this large surface to cool a brake. inside the wheel.
  • the open part 26 of the trim panel 20 comprises a blade 28 arranged substantially radially, presenting with respect to the transverse plane of the wheel 2 a small inclination forming an angle of incidence in order to generate an axial air movement during rotation of the wheel.
  • Figures 3 and 4 show a similar trim panel 20, comprising a contour of panels 22, and a detachable vane system 30 having a vane 28 receiving at each end a fixing 32 coming on the radially inner or outer edge of this outline.
  • Each attachment 32 comprises, starting from the blade 28, a rim 34 projecting towards the exterior direction of the vehicle, then after a hollow a tab 36 facing the interior direction, which has flexibility in the longitudinal direction of this blade.
  • the end of each flexible leg 36 has a boss 40 facing the outside of the blade 28.
  • the contour 22 of the trim panel 20 comprises two housings 42 each receiving a fixing 32, each housing having a lug 38 which, in the longitudinal direction of the blade 28, faces this fixing.
  • the panel 20 and the blade system 30 are each produced by molding in plastic material, making it possible to obtain complex shapes having the necessary elasticity economically in a single operation.
  • each attachment 32 fits into its housing 42 of the panel outline 22, so as to ensure a precise angular position of the blade 28, in particular its inclination with respect to the transverse plane of the wheel or angle of incidence, in order to ensure both the drive of the air towards the brake and the best aerodynamics of the vehicle represented by its coefficient of penetration into the air Cx.
  • a common vane system 30 for both sides of the vehicle, having two symmetrical fixings 32 at its ends, with a mounting of each system in one direction or the other after a reversal along the side, in order to give a reverse inclination of the blade 28 corresponding to its direction of rotation.
  • the hubcap of the wheel according to the invention also makes it possible in a simple way, without tools, to quickly change all the vane systems 30 of the wheels of a vehicle, by a simple pull on each system to extract it then press to adapt a new one, in order to test different blade 28 models in the wind tunnel. towards the inside of the wheel, and aerodynamic coefficients of the vehicle Cx. Different types of covers are formed while keeping the same outlines of panels 22, which requires a minimum of material to produce blades 28 which are varied. The cost of these hubcap modifications is minimal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a motor vehicle wheel comprising a radial part connecting a hub to an outer circular contour, and a trim formed by one or more panels (20) fastened to the radial part, these panels (20) having air passages (26) arranged so as to face openings in the radial part, characterized in that the air passages (26) of the panels (20) comprise systems of blades (30) that provide an axial turbine effect during the rotation of the wheel and are fastened to these panels (20) by interlocking.

Description

DESCRIPTION DESCRIPTION
TITRE : ROUE DE VEHICULE AUTOMOBILE COMPORTANT UN ENJOLIVEUR AERODYNAMIQUE TITLE: MOTOR VEHICLE WHEEL COMPRISING AN AERODYNAMIC TRIM
La présente invention revendique la priorité de la demande française 2106611 déposée le 22 juin 2021 , dont le contenu (texte, dessins et revendications) est ici incorporé par référence. The present invention claims the priority of French application 2106611 filed on June 22, 2021, the content of which (text, drawings and claims) is incorporated herein by reference.
La présente invention concerne une roue de véhicule automobile comportant un enjoliveur aérodynamique, ainsi qu’un véhicule automobile équipé de telles roues et un procédé de test aérodynamique avec ces roues. The present invention relates to a motor vehicle wheel comprising an aerodynamic hubcap, as well as a motor vehicle equipped with such wheels and a method of aerodynamic testing with these wheels.
Les véhicules automobiles comportent généralement des roues équipées de jantes réalisées en tôle d’acier embouti ou en alliage d’aluminium moulé, comprenant une partie centrale formant un moyeu, un contour extérieur circulaire recevant le pneumatique, et une partie radiale sensiblement plate assurant la liaison entre le moyeu et le contour circulaire. La jante peut recevoir un enjoliveur fixé sur sa face extérieure formant un seul panneau couvrant l’ensemble de cette face, ou plusieurs panneaux répartis sur le pourtour. Motor vehicles generally have wheels equipped with rims made of stamped sheet steel or cast aluminum alloy, comprising a central part forming a hub, a circular outer contour receiving the tire, and a substantially flat radial part providing the connection between the hub and the circular contour. The rim can receive a hubcap fixed to its outer face forming a single panel covering the whole of this face, or several panels distributed around the circumference.
Les enjoliveurs assurent un habillage esthétique, en particulier pour les jantes en tôle présentant peu de possibilités de formes permettant de leur donner un style. Les enjoliveurs peuvent aussi assurer une fonction aérodynamique sur le côté du véhicule, en préservant au mieux le coefficient de pénétration dans l’air Cx de ce véhicule afin de limiter sa consommation d’énergie. The hubcaps ensure an aesthetic dressing, in particular for the steel rims presenting few possibilities of forms allowing to give them a style. The hubcaps can also provide an aerodynamic function on the side of the vehicle, by preserving the air penetration coefficient Cx of this vehicle as well as possible in order to limit its energy consumption.
Les roues des véhicules automobiles reçoivent généralement un système de freinage comprenant un disque ou un tambour de frein, disposé dans un espace relativement fermé juste derrière la partie radiale de liaison, en dessous du contour extérieur. On prévoit alors des passages d’air de l’enjoliveur alignés sur des ouvertures de la partie radiale de la jante, permettant une entrée d’air venant du côté extérieur pour améliorer la ventilation du système de freinage, afin d’assurer l’évacuation des calories lors des freinages intenses. The wheels of motor vehicles generally receive a braking system comprising a disc or a brake drum, arranged in a relatively closed space just behind the radial connecting part, below the outer contour. Air passages in the hubcap are then provided aligned with openings in the radial part of the rim, allowing air to enter from the outer side to improve ventilation of the braking system, in order to ensure the evacuation calories during intense braking.
Un type de roue connu, présenté notamment par les documents FR-A1 -3041898 et FR-A1 -3078922, comporte plusieurs ouvertures réparties autour de la partie radiale de la jante, recevant chacune un panneau formant un insert fixé sur le contour de l’ouverture, comprenant un passage avec des pales disposées sensiblement radialement. Les pales présentent chacune une inclinaison par rapport au plan transversal de la roue, afin d’assurer lors de sa rotation un effet de turbine axiale qui force un flux d’air vers l’intérieur de la jante. A known type of wheel, presented in particular by the documents FR-A1 -3041898 and FR-A1 -3078922, comprises several openings distributed around the radial part of the rim, each receiving a panel forming an insert fixed to the contour of the opening, comprising a passage with blades arranged substantially radially. The blades each have an inclination with respect to the transverse plane of the wheel, in order to ensure during its rotation an axial turbine effect which forces a flow of air towards the inside of the rim.
Toutefois pour ce type d’enjoliveur formé par l’ensemble des panneaux, il est nécessaire de prévoir pour les côtés droit et gauche du véhicule deux modèles symétriques à cause du sens de rotation de la roue inversé suivant le côté du véhicule, afin d’assurer à chaque fois la poussée de l’air par les pales vers l’intérieur du véhicule. However, for this type of hubcap formed by all the panels, it is necessary to provide for the right and left sides of the vehicle two symmetrical models because of the reverse direction of rotation of the wheel depending on the side of the vehicle, in order to ensure each time the thrust of the air by the blades towards the interior of the vehicle.
Par ailleurs on peut chercher à ajuster les pales de l’enjoliveur pour les adapter à différents types de véhicules utilisant une même famille de jantes, afin d’optimiser l’aérodynamisme de ces véhicules, en particulier suivant les formes de carrosserie. On peut aussi réaliser des tests en soufflerie d’un nombre de formes de pales, pour suivant le type de véhicule chercher à optimiser leurs profils. En particulier les essais en soufflerie d’enjoliveurs de roue sont difficiles à simuler sur des outils numériques, il faut alors passer à des séries d’essais réels pour obtenir des valeurs précises. On notera que l’aérodynamisme des enjoliveurs de roue peut donner des écarts de consommation du véhicule pouvant représenter jusqu’à environ 1% de la consommation totale. In addition, it is possible to seek to adjust the blades of the hubcap to adapt them to different types of vehicles using the same family of rims, in order to optimize the aerodynamics of these vehicles, in particular according to the body shapes. We can also carry out wind tunnel tests on a number of blade shapes, in order to optimize their profiles, depending on the type of vehicle. In particular, wheel trim wind tunnel tests are difficult to simulate on digital tools, so you have to move on to series of real tests to obtain precise values. It should be noted that the aerodynamics of the wheel trims can give rise to differences in consumption of the vehicle which can represent up to approximately 1% of the total consumption.
Dans ces différents cas il faut prévoir en plus des deux modèles d’enjoliveurs pour les côtés droits et gauches du véhicule, un certain nombre de modèles correspondant à des profils aérodynamiques de pales particuliers afin de répondre aux différents véhicules. Pour réaliser un grand nombre d’essais, il faut fabriquer une variété de modèles d’enjoliveurs ce qui consomme de la matière devant être ensuite recyclée, nécessite à chaque changement des temps de dépose et repose de l’enjoliveur complet, et génère des coûts importants. In these different cases, it is necessary to provide, in addition to the two models of trims for the right and left sides of the vehicle, a certain number of models corresponding to particular aerodynamic profiles of the blades in order to respond to the different vehicles. To carry out a large number of tests, it is necessary to manufacture a variety of models of hubcaps, which consumes material that must then be recycled, requires time for removal and refitting of the complete hubcap at each change, and generates costs. important.
Un autre type de roue connu, présenté notamment par le document FR-A1 -3078286 comporte dans chaque insert s’adaptant sur une ouverture de la jante une pale montée sur des pivots disposés sensiblement radialement, permettant une inclinaison variable automatiquement suivant la température du frein disposé à proximité pour suivant les conditions de roulage optimiser l’aérodynamisme du véhicule, ou améliorer le refroidissement du frein si nécessaire. T outefois ce type de pales nécessite aussi un changement complet d’enjoliveur pour adapter différents modèles de pales. Another known type of wheel, presented in particular by the document FR-A1 -3078286 comprises in each insert fitting on an opening of the rim a blade mounted on pivots arranged substantially radially, allowing a variable inclination automatically according to the temperature of the brake placed nearby to optimize the vehicle's aerodynamics, depending on driving conditions, or improve brake cooling if necessary. However, this type of blade also requires a complete change of trim to adapt different models of blades.
La présente invention a notamment pour but d’éviter ces problèmes de l’art antérieur. The object of the present invention is in particular to avoid these problems of the prior art.
Elle propose à cet effet une roue de véhicule automobile comprenant une partie radiale reliant un moyeu à un contour circulaire extérieur, et un enjoliveur formé par un ou plusieurs panneaux fixés sur partie radiale, ces panneaux présentant des passages d’air disposés en face d’ouvertures de la partie radiale, caractérisée en ce que les passages d’air des panneaux comportent des systèmes de pales assurant un effet de turbine axiale lors de la rotation de la roue, qui sont fixés par emboîtement sur ces panneaux. It proposes for this purpose a motor vehicle wheel comprising a radial part connecting a hub to an outer circular contour, and a trim formed by one or more panels fixed to the radial part, these panels having air passages arranged opposite openings of the radial part, characterized in that the air passages of the panels comprise systems of blades ensuring an axial turbine effect during the rotation of the wheel, which are fixed by interlocking on these panels.
Un avantage de cette roue est que de manière simple et rapide, on peut, par un simple emboîtement sur les panneaux restant fixés sur la roue, changer de systèmes de pales comprenant différentes versions de pales, pour obtenir des enjoliveurs pour les côtés droits et gauches du véhicule, ou pour former des enjoliveurs adaptés à différents types de véhicules. An advantage of this wheel is that in a simple and fast way, it is possible, by a simple interlocking on the panels remaining fixed on the wheel, to change blade systems comprising different versions of blades, to obtain hubcaps for the right and left sides of the vehicle, or to form hubcaps adapted to different types of vehicles.
De plus pour réaliser des essais systématiques en soufflerie sur un véhicule, on peut échanger de manière très rapide uniquement les pales des enjoliveurs représentant chacune une masse réduite et un faible coût, ce qui permet de réaliser de manière économique un grand nombre d’essais dans un temps réduit. In addition, to carry out systematic tests in the wind tunnel on a vehicle, it is possible to exchange very quickly only the blades of the hubcaps, each representing a reduced mass and a low cost, which makes it possible to carry out economically a large number of tests in a reduced time.
La roue de véhicule automobile selon l’invention peut comporter de plus une ou plusieurs des caractéristiques suivantes, qui peuvent être combinées entre elles. Avantageusement, les systèmes de pales comportent des dispositifs de clipsage assurant un maintien de l’emboîtement sur les panneaux. The motor vehicle wheel according to the invention may also comprise one or more of the following characteristics, which may be combined with one another. Advantageously, the blade systems include clipping devices ensuring maintenance of the interlocking on the panels.
Dans ce cas, avantageusement chaque système de pale comporte à ses extrémités des pattes élastiques suivant une direction radiale de la roue, assurant le clipsage. De plus, chaque patte élastique peut comporter à son extrémité un bossage qui est comprimé au montage lors du passage sur un ergot du panneau. Avantageusement, les extrémités des systèmes de pales comportent des formes qui s’ajustent par emboîtement dans des logements des panneaux, en assurant une orientation de ces systèmes de pales. In this case, each blade system advantageously comprises at its ends elastic lugs in a radial direction of the wheel, ensuring clipping. In addition, each elastic lug may comprise at its end a boss which is compressed during assembly when passing over a lug of the panel. Advantageously, the ends of the blade systems have shapes which fit by interlocking in the housings of the panels, ensuring orientation of these blade systems.
Avantageusement, les panneaux et les systèmes de pales sont réalisés chacun par un moulage d’une matière plastique. L’invention a aussi pour objet un ensemble de roues de véhicule comprenant des roues présentant l’une quelconque des caractéristiques précédentes, qui comporte des systèmes de pales avec des pales présentant des angles d’incidence symétriques, correspondant aux deux sens de rotation des roues. Advantageously, the panels and the blade systems are each made by molding a plastic material. The invention also relates to a set of vehicle wheels comprising wheels having any one of the preceding characteristics, which comprises systems of blades with blades having symmetrical angles of incidence, corresponding to the two directions of rotation of the wheels .
L’invention a aussi pour objet un ensemble de roues de véhicule comprenant des roues présentant l’une quelconque des caractéristiques précédentes, qui comporte des systèmes de pales avec des pales présentant des angles d’incidence différents prévus pour un même sens de rotation de la roue. The invention also relates to a set of vehicle wheels comprising wheels having any one of the preceding characteristics, which comprises systems of blades with blades having different angles of incidence provided for the same direction of rotation of the wheel.
L’invention a de plus pour objet un véhicule automobile équipé de roues comprenant l’une quelconque des caractéristiques précédentes. The invention further relates to a motor vehicle fitted with wheels comprising any one of the preceding characteristics.
L’invention a de plus pour objet un procédé de mesure en soufflerie de l’aérodynamisme d’un véhicule, qui comporte entre deux mesures une étape de changement uniquement des systèmes de pales, en disposant des pales présentant des angles d’incidence différents. The invention also relates to a method for measuring the aerodynamics of a vehicle in a wind tunnel, which comprises between two measurements a step of changing only the blade systems, by arranging blades having different angles of incidence.
L’invention sera mieux comprise et d’autres caractéristiques et avantages apparaîtront plus clairement à la lecture de la description ci-après donnée à titre d’exemple, en référence aux dessins annexés dans lesquels : The invention will be better understood and other characteristics and advantages will appear more clearly on reading the description below given by way of example, with reference to the appended drawings in which:
[Fig. 1] présente une roue avec inserts, comportant cinq ouvertures réparties sur la partie radiale, recouverte chacune par un panneau d’enjoliveur ; [Fig. 1] has a wheel with inserts, comprising five openings distributed over the radial part, each covered by a trim panel;
[Fig. 2] présente un panneau d’enjoliveur de cette roue prévu pour une ouverture ; [Fig. 3] présente un panneau d’enjoliveur d’une roue selon l’invention comportant cinq ouvertures ; [Fig. 2] has a trim panel of this wheel provided for an opening; [Fig. 3] shows a trim panel of a wheel according to the invention comprising five openings;
[Fig. 4] est une vue en coupe suivant le plan de coupe IV-IV de ce panneau d’enjoliveur. [Fig. 4] is a cross-sectional view along section plane IV-IV of this trim panel.
Dans l’ensemble du document le côté extérieur du véhicule indiqué par la flèche EXT, et le côté intérieur, sont, suivant la direction latérale de ce véhicule, respectivement tournés vers l’extérieur et vers son centre. Throughout the document, the outer side of the vehicle indicated by the arrow EXT, and the inner side, are, depending on the lateral direction of this vehicle, respectively facing outwards and towards its centre.
Les figures 1 et 2 présentent respectivement une roue avec inserts et un insert réalisée par un moulage en alliage d’aluminium, comportant autour d’un axe principal A un moyeu 4 comprenant cinq perçages recevant des écrous de fixation sur le porte-moyeu du véhicule, un contour extérieur circulaire 6, encore désignée jante, recevant le pneumatique, et une partie radiale 8, encore désignée voile, comprenant cinq branches formant des barres radiale reliant le moyeu au contour extérieur. Figures 1 and 2 respectively show a wheel with inserts and an insert made by casting an aluminum alloy, comprising around a main axis A a hub 4 comprising five bores receiving fixing nuts on the hub carrier of the vehicle , a circular outer contour 6, also designated rim, receiving the tire, and a radial part 8, also designated sail, comprising five branches forming radial bars connecting the hub to the outer contour.
Chaque espace entre deux barres radiales 8 comporte une ouverture de passage d’air 10, présentant deux surfaces qui s’étendent radialement entre le moyeu 4 et le contour extérieur 6, comprenant une grande surface 12 et une petite surface 14 reliées entre elles par un canal de liaison 16 orienté suivant une direction sensiblement tangentielle. Each space between two radial bars 8 comprises an air passage opening 10, presenting two surfaces which extend radially between the hub 4 and the outer contour 6, comprising a large surface 12 and a small surface 14 connected to each other by a connecting channel 16 oriented in a substantially tangential direction.
L’enjoliveur de la roue comporte cinq panneaux identiques 20, formé chacun par un moulage en matière plastique, comprenant un contour extérieur 22 qui s’ajuste dans celui de chaque ouverture 10 en suivant la grande surface 12, la petite surface 14 et le canal de liaison 16. The hubcap of the wheel comprises five identical panels 20, each formed by a plastic molding, comprising an outer contour 22 which fits into that of each opening 10 following the large surface 12, the small surface 14 and the channel link 16.
Chaque panneau d’enjoliveur comporte une partie fermée 24 couvrant la petite surface 14 et le canal de liaison 16, et une partie ouverte 26 couvrant la grande surface 12 de manière à permettre un flux d’air passant par cette grande surface pour refroidir un frein à l’intérieur de la roue. Each trim panel has a closed part 24 covering the small surface 14 and the connecting channel 16, and an open part 26 covering the large surface 12 so as to allow a flow of air passing through this large surface to cool a brake. inside the wheel.
La partie ouverte 26 du panneau d’enjoliveur 20 comporte une aube 28 disposée sensiblement radialement, présentant par rapport au plan transversal de la roue 2 une petite inclinaison formant un angle d’incidence afin de générer un mouvement d’air axial lors de la rotation de la roue. The open part 26 of the trim panel 20 comprises a blade 28 arranged substantially radially, presenting with respect to the transverse plane of the wheel 2 a small inclination forming an angle of incidence in order to generate an axial air movement during rotation of the wheel.
Les figures 3 et 4 présentent un panneau d’enjoliveur similaire 20, comportant un contour de panneaux 22, et un système d’aube détachable 30 présentant une aube 28 recevant à chaque extrémité une fixation 32 venant sur le bord radialement intérieur ou extérieur de ce contour. Figures 3 and 4 show a similar trim panel 20, comprising a contour of panels 22, and a detachable vane system 30 having a vane 28 receiving at each end a fixing 32 coming on the radially inner or outer edge of this outline.
Chaque fixation 32 comporte en partant de l’aube 28, un rebord 34 en saillie vers la direction extérieure du véhicule, puis après un creux une patte 36 tournée vers la direction intérieure, qui présente une flexibilité suivant la direction longitudinale de cette aube. L’extrémité de chaque patte flexible 36 comporte un bossage 40 tourné vers l’extérieur de l’aube 28. Each attachment 32 comprises, starting from the blade 28, a rim 34 projecting towards the exterior direction of the vehicle, then after a hollow a tab 36 facing the interior direction, which has flexibility in the longitudinal direction of this blade. The end of each flexible leg 36 has a boss 40 facing the outside of the blade 28.
Le contour 22 du panneau d’enjoliveur 20 comporte deux logements 42 recevant chacun une fixation 32, chaque logement présentant un ergot 38 qui suivant la direction longitudinale de l’aube 28, est tourné vers cette fixation. Le panneau 20 et le système d’aube 30 sont réalisés chacun par un moulage en matière plastique, permettant d’obtenir de manière économique en une seule opération des formes complexes présentant l’élasticité nécessaire. The contour 22 of the trim panel 20 comprises two housings 42 each receiving a fixing 32, each housing having a lug 38 which, in the longitudinal direction of the blade 28, faces this fixing. The panel 20 and the blade system 30 are each produced by molding in plastic material, making it possible to obtain complex shapes having the necessary elasticity economically in a single operation.
Lors de la mise en place du système d’aube 30, un opérateur engage les fixations 32 dans les logements 42 du contour de panneau 22, puis pousse sur ce système vers la direction intérieure afin de réaliser d’abord une déformation élastique de ses pattes flexibles 36 vers l’aube 28 quand les bossages 40 arrivent sur les ergots 38. En continuant la pression et le mouvement du système d’aube 30, chaque bossage 40 passe au-delà de son ergot 38, avec ensuite un retour élastique de la patte flexible 36 vers l’extérieur de l’aube 28 qui assure un clipsage final de maintien du système. When installing the blade system 30, an operator engages the fasteners 32 in the housings 42 of the panel outline 22, then pushes on this system towards the interior direction in order to first achieve an elastic deformation of its legs flexible 36 towards the blade 28 when the bosses 40 arrive on the lugs 38. By continuing the pressure and the movement of the blade system 30, each boss 40 passes beyond its lug 38, with then an elastic return of the flexible tab 36 towards the outside of the blade 28 which provides final clipping to hold the system.
De plus chaque fixation 32 s’ajuste dans son logement 42 du contour de panneau 22, de manière à assurer une position angulaire précise de l’aube 28, en particulier son inclinaison par rapport au plan transversal de la roue ou angle d’incidence, afin d’assurer à la fois la pulsion de l’air vers le frein et le meilleur aérodynamisme du véhicule représenté par son coefficient de pénétration dans l’air Cx. In addition, each attachment 32 fits into its housing 42 of the panel outline 22, so as to ensure a precise angular position of the blade 28, in particular its inclination with respect to the transverse plane of the wheel or angle of incidence, in order to ensure both the drive of the air towards the brake and the best aerodynamics of the vehicle represented by its coefficient of penetration into the air Cx.
On peut ainsi réaliser facilement des enjoliveurs de roue pour le côté droit ou le côté gauche du véhicule, en posant un système d’aube 30 donnant l’inclinaison de l’aube 28 correspondant au sens de rotation de cette roue. It is thus possible to easily produce wheel trims for the right side or the left side of the vehicle, by fitting a vane system 30 giving the inclination of the vane 28 corresponding to the direction of rotation of this wheel.
On peut aussi en variante prévoir un système d’aube 30 commun pour les deux côtés du véhicule, présentant deux fixations 32 symétriques à ses extrémités, avec un montage de chaque système dans un sens ou dans l’autre après un retournement suivant le côté, afin de donner une inclinaison inverse de l’aube 28 correspondant à son sens de rotation. As a variant, it is also possible to provide a common vane system 30 for both sides of the vehicle, having two symmetrical fixings 32 at its ends, with a mounting of each system in one direction or the other after a reversal along the side, in order to give a reverse inclination of the blade 28 corresponding to its direction of rotation.
L’enjoliveur de la roue selon l’invention permet aussi de manière simple, sans outillage, de changer rapidement tous les systèmes d’aube 30 des roues d’un véhicule, par une simple traction sur chaque système pour l’extraire puis une pression pour en adapter un nouveau, afin de tester en soufflerie différents modèles d’aube 28. En particulier on peut procéder à des essais d’aubes 28 présentant des angles d’incidence différents pour mesurer à chaque fois les écarts de flux d’air pulsé vers l’intérieur de la roue, et de coefficients aérodynamiques du véhicule Cx. On forme différents types d’enjoliveurs en gardant les mêmes contours de panneaux 22, ce qui nécessite un minimum de matière pour produire des aubes 28 qui sont variées. Le coût de ces modifications d’enjoliveurs est minimum. The hubcap of the wheel according to the invention also makes it possible in a simple way, without tools, to quickly change all the vane systems 30 of the wheels of a vehicle, by a simple pull on each system to extract it then press to adapt a new one, in order to test different blade 28 models in the wind tunnel. towards the inside of the wheel, and aerodynamic coefficients of the vehicle Cx. Different types of covers are formed while keeping the same outlines of panels 22, which requires a minimum of material to produce blades 28 which are varied. The cost of these hubcap modifications is minimal.

Claims

REVENDICATIONS
1. Roue de véhicule automobile (2) comprenant une partie radiale (8) reliant un moyeu (4) à un contour circulaire extérieur (6), et un enjoliveur formé par un ou plusieurs panneaux (20) fixés sur partie radiale (8), ces panneaux (20) présentant des passages d’air (26) disposés en face d’ouvertures (10) de la partie radiale (8), caractérisée en ce que les passages d’air (26) des panneaux (20) comportent des systèmes de pales (30) assurant un effet de turbine axiale lors de la rotation de la roue, qui sont fixés par emboîtement sur ces panneaux (20). 1. Motor vehicle wheel (2) comprising a radial part (8) connecting a hub (4) to an outer circular contour (6), and a trim formed by one or more panels (20) fixed to the radial part (8) , these panels (20) having air passages (26) arranged opposite openings (10) of the radial part (8), characterized in that the air passages (26) of the panels (20) comprise systems of blades (30) ensuring an axial turbine effect during the rotation of the wheel, which are fixed by interlocking on these panels (20).
2. Roue de véhicule selon la revendication 1 , caractérisée en ce que les systèmes de pales (30) comportent des dispositifs de clipsage assurant un maintien de l’emboîtement sur les panneaux (20). 2. Vehicle wheel according to claim 1, characterized in that the blade systems (30) comprise clipping devices ensuring maintenance of the interlocking on the panels (20).
3. Roue de véhicule selon la revendication 2, caractérisée en ce que chaque système de pale (30) comporte à ses extrémités des pattes (36) élastiques suivant une direction radiale de la roue, assurant le clipsage. 3. Vehicle wheel according to claim 2, characterized in that each blade system (30) has at its ends lugs (36) elastic in a radial direction of the wheel, ensuring clipping.
4. Roue de véhicule selon la revendication 3, caractérisée en ce que chaque patte élastique (36) comporte à son extrémité un bossage (40) qui est comprimé au montage lors du passage sur un ergot (38) du panneau (20). 4. Vehicle wheel according to claim 3, characterized in that each elastic tab (36) has at its end a boss (40) which is compressed during assembly when passing over a lug (38) of the panel (20).
5. Roue de véhicule selon l’une quelconque des revendications précédentes, caractérisée en ce que les extrémités des systèmes de pales (30) comportent des formes qui s’ajustent par emboîtement dans des logements (42) des panneaux (20), en assurant une orientation de ces systèmes de pales (30). 5. Vehicle wheel according to any one of the preceding claims, characterized in that the ends of the blade systems (30) have shapes which fit by interlocking in the housings (42) of the panels (20), ensuring an orientation of these blade systems (30).
6. Roue de véhicule selon l’une quelconque des revendications précédentes, caractérisée en ce que les panneaux (20) et les systèmes de pales (30) sont réalisés chacun par un moulage d’une matière plastique. 6. Vehicle wheel according to any one of the preceding claims, characterized in that the panels (20) and the blade systems (30) are each made by molding a plastic material.
7. Ensemble de roues de véhicule comprenant des roues selon l’une quelconque des revendications précédentes, caractérisé en ce qu’il comporte des systèmes de pales (30) avec des pales (28) présentant des angles d’incidence symétriques, correspondant aux deux sens de rotation des roues. 7. Vehicle wheel assembly comprising wheels according to any one of the preceding claims, characterized in that it comprises blade systems (30) with blades (28) having symmetrical angles of incidence, corresponding to the two direction of rotation of the wheels.
8. Ensemble de roues de véhicules comprenant des roues selon l’une quelconque des revendications 1 à 6, caractérisé en ce qu’il comporte des systèmes de pales (30) avec des pales (28) présentant des angles d’incidence différents prévus pour un même sens de rotation de la roue. 8. Set of vehicle wheels comprising wheels according to any one of claims 1 to 6, characterized in that it comprises blade systems (30) with blades (28) having different angles of incidence provided for the same direction of rotation of the wheel.
9. Véhicule automobile équipé de roues, caractérisé en ce que ces roues sont selon l’une quelconque des revendications 1 à 6. 9. Motor vehicle equipped with wheels, characterized in that these wheels are according to any one of claims 1 to 6.
10. Procédé de mesure en soufflerie de l’aérodynamisme d’un véhicule selon la revendication 9, caractérisé en ce qu’il comporte entre deux mesures une étape de changement uniquement des systèmes de pales (30), en disposant des pales (28) présentant des angles d’incidence différents. 10. A method for measuring the aerodynamics of a vehicle in a wind tunnel according to claim 9, characterized in that it comprises between two measurements a step of changing only the blade systems (30), by placing blades (28) with different angles of incidence.
EP22731727.8A 2021-06-22 2022-05-12 Motor vehicle wheel comprising an aerodynamic trim Pending EP4359224A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2106611A FR3124115B1 (en) 2021-06-22 2021-06-22 MOTOR VEHICLE WHEEL COMPRISING AN AERODYNAMIC HUB CAP
PCT/FR2022/050910 WO2022269152A1 (en) 2021-06-22 2022-05-12 Motor vehicle wheel comprising an aerodynamic trim

Publications (1)

Publication Number Publication Date
EP4359224A1 true EP4359224A1 (en) 2024-05-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22731727.8A Pending EP4359224A1 (en) 2021-06-22 2022-05-12 Motor vehicle wheel comprising an aerodynamic trim

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Country Link
EP (1) EP4359224A1 (en)
FR (1) FR3124115B1 (en)
WO (1) WO2022269152A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694512A (en) 1970-09-18 1972-09-26 Squibb & Sons Inc Tetrahydro-cyclopropa naphthalenes
US6517168B1 (en) * 2001-06-05 2003-02-11 Lacks Industries, Inc. Wheel cover having interchangeable turbine pocket inserts
FR3041898A1 (en) 2015-10-05 2017-04-07 Peugeot Citroen Automobiles Sa TURBINE INSERT FOR VEHICLE WHEEL
FR3078286A1 (en) 2018-02-28 2019-08-30 Psa Automobiles Sa ACTIVE WHEEL TRIM
FR3078922A1 (en) 2018-03-19 2019-09-20 Psa Automobiles Sa STRUCTURAL WHEEL OF VEHICLE WITH AERODYNAMIC EFFECT AND VEHICLE COMPRISING SUCH A WHEEL

Also Published As

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WO2022269152A1 (en) 2022-12-29
FR3124115B1 (en) 2024-03-29
FR3124115A1 (en) 2022-12-23

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