Air transmission device incorporated into the bumper reinforcement.

Abstract

The invention relates to a device (1) for transmitting air between a front face of a vehicle and a front wheel arch of the vehicle, the air being intended for cooling a braking component, the device (1) comprising an air duct (5) extending between an air inlet (6), intended to draw air from the front face, and an air outlet (7), designed to diffuse the air drawn from the air inlet (6) into the wheel arch, the air duct (5) comprising two half-shells (8, 9) fixed to each other by fastening means so that the air duct (5) has a closed cross-section, the device (1) being characterized in that one of the half-shells (8) is made of material with a bumper reinforcement (4), designed to extend behind a bumper skin of the front face and designed to stiffen the bumper skin fixed to the front face. (Figure 3)

Description

Description Title of the invention: Air transmission device incorporated in bumper reinforcement.

[0001] — The technical field concerns air transmission devices enabling to diffuse air into a wheel arch, the front faces featuring such devices and Finally, vehicles with such a front end.

[0002] — Modern vehicles require more robust and more effective, because they are subjected to greater demands than in the past. A The first reason lies in the increase in the average mass of vehicles, particularly hybrid or electric vehicles. A second reason sometimes relates to increasing vehicle driving performance. In order to increase the per- In the case of a braking system, it is known to improve its ventilation with fresh air. when the vehicle is moving. Also, it is known to have the vents for ventilation in the bumper to bring fresh air into the wheel arch where it is located the braking system. However, due to the increased needs discussed previously, Existing ventilation ducts should be improved.

[0003] — As mentioned above, the mass of motor vehicles is a concern constant among car manufacturers who strive to limit or reduce the mass of their vehicles.

[0004] — Another important concern of manufacturers, indirectly related to the preoc- Mass reduction consists of reducing the number of parts needed for the assembly of a vehicle. Also, the development of a new sales conduit Tilation must take both of these concerns into account.

[0005] — The present invention aims to overcome the problems described above. In this technical context, one objective of the present invention is to provide a device air transmission between a front end and a wheel arch allowing for reduction the number of parts and the mass of the vehicle.

[0006] — To this end, the present invention relates to an air transmission device between the front of a vehicle and the front wheel arch of the vehicle, the air being intended for cooling a vehicle braking component, the device including an air duct extending between an air inlet, intended to draw from air is drawn in from the front of the vehicle, and an air outlet is designed to diffuse the extracted air. through the air intake in the wheel arch, the air duct comprising two half- shells fixed to each other by fastening means so that the air duct presents a closed cross-section, the device being characterized in that one of the The half-shells come in a material with a bumper reinforcement, designed to expand in rear of a front bumper skin and designed to stiffen the bumper skin attached to the front. The invention also relates to a front face of a motor vehicle, comprising a bumper skin, designed to form a surface of appearance of the front face, and a bumper reinforcement, designed to extend behind the bumper skin, the front face comprising at least one device according to the invention, each device being disposed between the bumper reinforcement and the bumper skin, the air inlet being disposed opposite an air intake provided in the bumper skin. The invention finally relates to a vehicle comprising a front face according to the invention. By rear, it is understood here to be located at the rear for an observer observing the front of the vehicle and facing said front. Thus, the device according to the invention makes it possible to equip a front end according to the invention and improve the supply of fresh air to the wheel arch. The device according to the invention cleverly reduces the number of parts required since it utilizes an existing component: the bumper reinforcement. A modification to the shape of the bumper reinforcement defines one half of the air duct, so that only one other half is needed to form the air duct. The device according to the invention therefore eliminates the need for one of the two half-shells usually required to form a ventilation duct. For a front end according to the invention, equipped, for example, with two devices according to the invention, the reduction in parts is doubled. According to one embodiment of the invention, part of the air duct is formed in a side of the bumper reinforcement. According to one possibility, the device includes an air inlet trim designed to extend along one edge of the air duct forming the air inlet. In one embodiment, the fastening means allow one half-shell to be clipped onto the other half-shell. The other half-shell is understood to be the half-shell independent of the bumper reinforcement. According to one possibility, the other half of the shell is positioned to support the bumper skin. The invention will be better understood upon reading the detailed description that follows, given solely by way of non-limiting example and made with reference to the accompanying drawings in which: [Fig.1] [Fig.1] represents a partial perspective view of a front face of a vehicle according to the invention; [Fig.2] [Fig.2] represents a perspective view of the half-shells forming the air duct, as well as an air trimmer of a device according to the invention; [Fig. 3] [Fig. 3] represents a perspective view of the device's air duct according to the invention consisting of the half-shells of the [Fig.2]. In these figures, the same references are used to designate the same elements. An air transmission device 1 according to the invention is intended to equip a front face 2 of a vehicle according to the invention in order to transmit air between the front face 2 of the vehicle and a front wheel arch of the vehicle, not illustrated in the figures. As illustrated in [Fig. 1], the front face 2 of the vehicle according to the invention comprises a bumper skin 3 forming a visible surface, accessible to a vehicle user, and contributing to the vehicle's aerodynamics. The bumper skin 3 conventionally conceals a front bumper 2, not shown, typically comprising a bumper beam and a bumper reinforcement 4, partially illustrated in Figures 2 and 3, extending behind the bumper skin 3. The bumper reinforcement 4 generally rests, when the vehicle is so equipped, on a motor-fan assembly. The bumper reinforcement 4 stiffens the bumper skin 3 to prevent aerodynamic deformation of the latter when the vehicle is traveling at high speeds, on the order of 120 to 140 km / h, and gives the front face 2 a rigid feel to the touch.The bumper skin 3 and the reinforcement 4 are usually made of molded plastic materials. The front face 2 also includes at least one device 1 according to the invention. For example, the front face 2 includes two devices according to the invention, each arranged symmetrically on one side of the front face 2, as illustrated in [Fig. 1]. Device 1 comprises an air duct 5, illustrated in Figures 1 and 3, extending between an air inlet 6, designed to draw air from the front face 2 of the vehicle, and an air outlet 7, designed to distribute the air drawn from the air inlet 6, illustrated in Figures 2 and 3, into the wheel arch. When device 1 is mounted on the front face 2, the air drawn from the air inlet 6, flowing through the air duct 5 and distributed by the air outlet 7, is intended for cooling a braking component of the vehicle. The air duct 5 comprises two half-shells 8, 9 fixed to each other by fastening means 10 such that the air duct 5 has a closed cross-section, as illustrated in [Fig. 3]. The device 1 according to the invention is particular in that one of the half-shells 8 is made of the same material as the bumper reinforcement 4, partially illustrated in [Fig. 2]. As illustrated in [Fig. 2], a portion 11 of the air duct 5 is formed in a side of the bumper reinforcement 4 intended to extend into the front face 2 on one side of the vehicle, in front of the wheel arch. The bumper skin 3 has an air intake 12, formed by an opening in the bumper skin 3. In the front panel 2, the air intake 6 of the air duct 5 is positioned opposite the air intake 12. To ensure visual and aerodynamic continuity between the bumper skin 3 and the air duct 5, the device 1 includes an air intake trim 13 designed to extend along an edge 14 of the air duct 5 forming the air intake 6 and illustrated in Figures 1 and 2. The trim 13 is shaped to ensure continuity between the air intake 12 and the air intake 6. For example, in order to contribute to the stiffening of the bumper skin 3, the other half-shell 9 is arranged, in the front face 2, in support of the bumper skin 3. For this purpose, the half-shell 9 includes fastening means 15 allowing the half-shell 9 to be secured to the bumper skin 3. The fastening means 15 include, for example, fixing studs 16, illustrated in [Fig.2]. The fastening means 10 allow the half-shells 8, 9 to be assembled by clipping one half-shell 8 onto the other half-shell 9. For this purpose, the half-shell 8, for example, has clipping tabs 17 designed to cooperate with clipping holes 18 provided in the half-shell 9. Thus, device 1 according to the invention makes it possible to form the front face 2 according to the invention. In the front face 2, the supply of fresh air into the wheel arch is optimized for efficient ventilation of a braking component. The assembly of the front face 2 according to the invention saves two parts, that is, one per device 1 according to the invention. The invention is not limited to the embodiment of the air transmission device according to the invention described above, only by way of example, but other embodiments may be designed by a person skilled in the art without departing from the scope and extent of the present invention.

Claims

Demands

1. Device (1) for transmitting air between a front face (2) of a vehicle and a front wheel arch of the vehicle, the air being intended for cooling of a vehicle braking component, the device (1) including an air duct (5) extending between an air inlet (6), intended to draw air from the front face (2) of the vehicle, and an outlet air (7), designed to diffuse the air taken in by the air inlet (6) into the wheel arch, the air duct (5) comprising two half-shells (8, 9) fixed to each other by fastening means (10) so that the air duct (5) has a closed cross-section, the device (1) being characterized in that one of the half-shells (8) comes from material with a bumper reinforcement (4), designed to extend behind a bumper skin (3) of the front face (2) and designed to stiffen the bumper skin (3) fixed to the front face (2).

2. Device (1) according to claim 1, characterized in that a part of the air duct (5) is formed in a side of the reinforcement (4) of the shield- shocks.

3. Device (1) according to claim 1 or 2, characterized in that it includes an air inlet trim (13) designed to extend along of an edge (14) of the air duct (5) forming the air inlet (6).

4. Device (1) according to any one of claims 1 to 3, characterized in that the fastening means (10) allow for fastening by clipping one half-shell (8) onto the other half-shell (9).

5. Front face (2) of a motor vehicle, comprising a windshield skin shocks (3), designed to form a surface with the appearance of the front face (2), and a bumper reinforcement (4), designed to extend behind the bumper skin (3), the front face (2) comprising at least one device (1) according to any one of claims 1 to 4, each device (1) being positioned between the bumper reinforcement (4) and the bumper skin (3), the air inlet (6) being arranged opposite an air intake (12) provided in the bumper skin (3).

6. Front face (2) according to claim 5, characterized in that the other The half-shell (9) is positioned to support the bumper skin (3).

7. Motor vehicle comprising a front end (2) according to claim- indication 5 or 6.

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