Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D35/00—Vehicle bodies characterised by streamlining
  • B62D35/007—Rear spoilers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
  • B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
  • Y02T10/82—Elements for improving aerodynamics

Definitions

• Motor vehicle spoiler comprising an aerodynamic blade comprising a plurality of fins
• the invention relates to the field of the automobile and more particularly that of the spoilers of a motor vehicle.
• Spoiler (or spoiler in English) a body part forming an extension positioned at the rear of the roof, and intended to improve the aerodynamic performance of the vehicle on which this piece is placed.
• the spoilers are also used for aesthetic aspects of the vehicle. They are usually located and fixed at the top and rear of the vehicle, usually between the roof and the top edge of the telescope, either on the roof or on the tailgate.
• Spoilers comprising a movable aerodynamic blade, that is to say an element making it possible to improve the aerodynamic performance by shifting more towards the rear of the vehicle the points of separation of the air with respect to the vehicle, (ie the points at which the air no longer follows the body), able to deploy by translation between a retracted position inside the spoiler and an extended position.
• a slide mechanism is a relatively bulky mechanism, especially in the so-called axial direction of deployment of the mobile aerodynamic blade. Indeed, the minimum axial size of the mechanism in the retracted position is greater than the deployment stroke and all the more so that the cantilevered deployment is important. Indeed, it is necessary that the length of the slide allows to ensure the desired deployment stroke while maintaining a length engaged between the different branches of each slide necessary to ensure accurate guidance to the end of the race and the robustness and the robust support of the aerodynamic blade movable and the forces applied to it, including the aerodynamic forces suffered by the deployed position cantilevered.
• the invention aims to overcome these disadvantages by providing a spoiler of a motor vehicle comprising a movable aerodynamic blade deployable through a less bulky and cheaper mechanism than those mentioned above.
• the invention relates to a rear spoiler of a motor vehicle comprising a movable aerodynamic blade, the movable aerodynamic blade being constituted by a plurality of fins, each of the vanes being rotatable about a rotation axis of its own.
• the various blades of the mobile aerodynamic device are deployed by rotation, which makes it possible to dispense with a bulky slide mechanism, fragile been difficult to implement.
• the spoiler according to the invention may further comprise one or more of the following features:
• At least a portion of the fins are distributed symmetrically with respect to a plane separating a right side of a left side of the spoiler; at least a portion of the fins are distributed over the left and right parts of the spoiler, the parts being separated by a transverse vertical plane of the spoiler passing through the center of the spoiler when the spoiler is mounted on a motor vehicle, each axis of rotation a fin located on the left side of the spoiler being symmetrical with an axis of rotation of a fin located on the right part of the spoiler with respect to an axis comprised in the transverse vertical plane of the spoiler passing through the center of the spoiler;
• the spoiler comprises a lower face and an upper face, the rotation of the fins being able to take place between planes in which the lower and upper faces of the spoiler are located;
• the axis of rotation is a substantially vertical axis when the spoiler is mounted on a motor vehicle
• each fin is overlapping with the fin or at least one of the fins in contact with it;
• the different fins extend in two planes parallel to each other, each fin extending in a plane different from the fin or from at least one of the fins in contact with it;
• the number of fins is odd
• the fins are interconnected via at least one connecting arm
• the actuator is able to collaborate with only one of the fins
• the actuator is able to collaborate with a gear capable of collaborating with a circular toothed portion of the fin to which the gear is connected;
• the different fins of the mobile aerodynamic blade are distributed at regular intervals.
• the invention also relates to a motor vehicle comprising a spoiler according to the invention.
• FIGS. 1 to 3 are perspective views of a rear portion of a motor vehicle comprising a spoiler according to the invention, the spoiler comprising a movable aerodynamic blade respectively retracted position inside the spoiler, being deployed or retraction and in the deployed position,
• FIG. 4a is a schematic representation, seen from above, of the mobile aerodynamic device according to the invention in the retracted position inside the spoiler,
• FIG. 4b is a schematic representation, seen from above, of the device aerodynamic mobile according to the invention in the extended position in the extension of a rear end of the motor vehicle when the rear spoiler is mounted on a motor vehicle,
• FIGS. 5a and 5b are the diagrammatic representation, seen from the rear, of two examples of possible overlap of the fins constituting the mobile aerodynamic blade, and
• FIG. 6 to 8 are schematic representations of the blades constituting the movable aerodynamic blade respectively in the retracted position inside the spoiler, during deployment or retraction and in the deployed position.
• FIGS. 1-10 represent a rear portion of a motor vehicle 2 comprising a spoiler 4.
• the spoiler 4 in this example, is intended to be disposed in a region of a rear roof edge above a rear window 6 and comprises a movable aerodynamic blade 8 between a retracted position inside the spoiler 4 (visible in Figure 1) and an extended position (visible in Figure 3).
• the aerodynamic movable blade 8 consists of several fins 10 The combination of the different fins 10 and their arrangement relative to each other make it possible to create the mobile aerodynamic blade 8 having in the example described a continuous surface between its two farthest extremities in a direction parallel to the transverse axis Y of the vehicle 2.
• two contiguous fins 10 may be superimposed on a portion corresponding to at least 5% of the area of the fins 10, preferably at least 25% of the area of the fins 10.
• the trailing edge line 13 of the movable aerodynamic blade 8 does not include angular points but can form, as illustrated in the figures, a curved line comprising a rounded shape.
• the different fins 10 may be arranged at regular intervals.
• Figures 1 to 3 show a movable aerodynamic blade 8 comprising five fins 10. Of course, this number can be varied.
• the fins 10 are all rotatable. It can for example be a rotation of an angle equal to 180 °.
• the angle of rotation of the fins 10 may be different from 180 ° depending on the number of fins 10, the length of the fins to be produced but also requirements on the aerodynamic shape of the trailing edge line.
• Each of the fins 10 is rotatable about an axis of rotation A distinct from other fins (here it means that its own axis of rotation), the axes of rotation of the different fins being parallel to each other, as can be seen in Figures 5a and 5b.
• the axes of rotation A are axes parallel to a vertical axis Z of the vehicle 2 when the spoiler 4 is mounted on a motor vehicle. This may vary according to the curve of the vehicle 2.
• the axes of rotation A fins 10 are generally perpendicular to the different planes in which the various fins 10 of the mobile aerodynamic blade 8 extend (it can be act strictly speaking of a plane comprising for example a face of the fins 10, the latter being volume elements), these plans are or not perpendicular to the vertical axis Z.
• the axes of rotation A will not be parallel to a vertical axis Z of the vehicle 2.
• the fins 10 are distributed symmetrical with respect to a plane separating a right side from a left side of the spoiler.
• This plane may for example be a transverse vertical plane of the spoiler 4 passing through the center of the spoiler 4 when the latter is mounted on the vehicle 2. It may therefore be a plane coincident with the longitudinal vertical plane of the vehicle 2 passing in its center, plane commonly called "plane Y0" of the vehicle 2.
• plane Y0 plane commonly called "plane Y0" of the vehicle 2.
• the axes of rotation of the fins 10 are not parallel to each other or that the fins 10 are not flat to give the aerodynamic blade mobile 8 a shape adapted to the curve of the vehicle 2.
• the axes of rotation A can also be parallel to each other but not parallel to the vertical axis Z of the vehicle 2 when the spoiler is mounted on a motor vehicle.
• the axis of rotation A can be aligned along an axis parallel to a transverse axis Y of the vehicle 2 when the spoiler 4 is mounted on a motor vehicle or else aligned along a curved line 17 having the same shape as the trailing edge line 13.
• the fins 10 may be distributed over a number of levels less than the number of fins 10 constituting the mobile aerodynamic blade 8. As explained previously, this reduces the bulk in a direction parallel to the vertical axis Z. It is possible for example ( Figure 5b) that the different fins 10 extend in two planes parallel to each other, each fin 10 extending in a different plane of the fin 10 or at least one of the fins 10 in contact therewith. Preferably, the fins 10 are located alternately in each of the two levels. In this case, the size is greatly reduced because the fins 10 are only in two planes. It is therefore an optimal compromise between the reduction of the bulk and the ease of 10.
• the distribution in two planes makes it possible to prevent the various fins 10 from becoming interfered with when they are moving while guaranteeing a satisfactory shape of the mobile aerodynamic blade 8 due to the overlap between the blades. 10.
• the fins 10 can be distributed over three levels.
• each fin 10 is activated individually.
• the different fins 10 can be connected to each other by means of link arms 14 (for example rods, visible in FIGS. 6 to 8) or any other means capable of moving all the parts 10 from the movement of only one of them.
• the fins 10 can be deployed and retracted simultaneously but also sequentially.
• an actuator 15 for example a motor with a direct torque and angle output
• a toothed wheel 16 that can for example be located at one end of the spoiler 4, in any state of cause in contact with one of the fins 10 forming the movable aerodynamic blade 8.
• the movement of the toothed wheel 16 by the actuator 15 can be achieved by means of one or more other gear wheels or via a belt (not shown) connecting the actuator 15 to the toothed wheel 16.
• the toothed wheel 16 can be engaged with a circular toothed portion (not shown) formed on the fin 10 in contact with the toothed wheel 16.
• the fin 10 in contact with the toothed wheel 16 is connected, directly or indirectly, to all the other fins 10 constituting the mobile aerodynamic blade 8 by means making it possible to set all the others in motion by 10, for example by connecting arms 14, as can be seen in Figures 6 to 8 on which the setting in motion of the lower blade 10 allows to move the other fins 10 through the arms of link 14 and this simultaneously.
• the link arms are attached to the fins 10 via a link allowing a rotation relative to each other, for example a pivot-type connection.
• the movable aerodynamic blade 8 When driving the vehicle 2, and when the latter reaches a threshold speed, the movable aerodynamic blade 8 is deployed.
• the actuator 15 connected to an electronic control unit of the vehicle, moves the toothed wheel 16, for example by means of a belt or at least one other gear.
• the toothed wheel 16 then rotates the blade 10, with which it is in contact thanks to its collaboration with the circular toothed portion, about its axis of rotation A.
• the blade 10 collaborating with the toothed wheel 16 therefore causes the others 10 blades around their respective axes of rotation A to deploy the aerodynamic blade 8.
• it may be a rotation of 180 °, or at least a rotation of a given angle depending on the various parameters mentioned above.
• the actuator 15 causes the toothed wheel 16 to move at a determined speed and for a determined duration. It is also possible to provide, depending on the actuating system, a terminal stop (for example at the blade 10 initially set in motion) to ensure that the parts 10 are in an optimum deployed position.
• the actuator 15 sets in motion the toothed wheel 16 in a direction opposite to that which allowed the deployment. This has the effect of causing a rotation of all the blades 10 (via that in contact with the toothed wheel 16) in a direction opposite to that which allowed their deployment). This leads to the retraction of the mobile aerodynamic blade 8.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Body Structure For Vehicles (AREA)
• Motor Or Generator Cooling System (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=61521708

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (10)

• 2017
  • 2017-12-26 FR FR1763201A patent/FR3075749B1/fr active Active
• 2018
  • 2018-12-26 WO PCT/EP2018/086889 patent/WO2019129794A1/fr unknown
  • 2018-12-26 CN CN201880082009.8A patent/CN111491855A/zh active Pending
  • 2018-12-26 EP EP18829886.3A patent/EP3732090A1/de not_active Withdrawn

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