JP2017024446A - Vehicular spats and vehicle lower part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular spat that can further improve aerodynamic performance of a vehicle.SOLUTION: The vehicular spat 10 is provided on a side of vehicle forward of a wheel 12 and used for an underfloor of the vehicle 13, has a bottom wall part 18, side wall parts 20, 22 and a rear wall part 24 to serve as an air straightening part, is formed into a bottomed shape of which vehicle upper side is opened, and provided with a slit 26 (ventilation part) through which air can pass, at the rear wall part 24 that faces the wheel 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle spats and a vehicle lower structure.

  There is disclosed a spat in which a pair of spat bodies adjacent to each other in the vehicle front-rear direction is connected by a rectifying unit (see Patent Document 1). In this spats, the aerodynamic performance is improved by suppressing the running wind from flowing between the pair of spats main body portions by the rectifying portion.

JP 2014-136454 A

  However, it is considered that when the traveling wind flows between the rear spats body and the tire, a vortex is generated and the air flow is disturbed.

  An object of this invention is to provide the spats for vehicles which can further improve the aerodynamic performance of a vehicle.

  The vehicle spats according to claim 1 are provided on the vehicle front side of the wheel and are used under the floor of the vehicle. The vehicle spats have a bottom wall portion, a side wall portion, and a rear wall portion serving as a rectifying portion, and the vehicle upper side is opened. A ventilating portion that has a bottom shape and allows air to pass through is provided in the rear wall portion that faces the wheel.

  In this vehicular spats, a ventilation portion through which air can pass is provided in the rear wall portion facing the wheel, so that the air on the vehicle front side of the rear wall portion passes through the ventilation portion when the vehicle travels. Supplied between. Thereby, it is suppressed that the driving | running | working wind which flows along the vehicle downward direction of a bottom wall part flows in from a vehicle lower side between a rear wall part and a wheel. For this reason, generation | occurrence | production of a vortex | eddy_current between a rear wall part and a wheel is suppressed.

  According to a second aspect of the present invention, in the vehicle spats according to the first aspect, the ventilation portion is provided at least at a lower portion of the rear wall portion.

  In this vehicle spats, the ventilation portion is provided at least at the lower portion of the rear wall portion, so that the traveling wind flowing along the vehicle lower portion of the bottom wall portion flows between the rear wall portion and the wheel from the vehicle lower side. Is suppressed at the beginning of the flow.

  According to a third aspect of the present invention, in the vehicle spats according to the first or second aspect, the ventilation section is a slit.

  In this vehicle spats, the air on the vehicle front side of the rear wall portion is supplied between the rear wall portion and the wheel through the slit which is the ventilation portion, so that the rectifying action by the rear wall portion is ensured and the rear wall portion Generation of vortex between the wheel and the wheel can be suppressed.

  A vehicle lower structure according to a fourth aspect includes the vehicle spats according to any one of the first to third aspects.

  In this vehicle lower part structure, the running wind in the lower part of the vehicle can be rectified by the vehicle spats, and the generation of vortex between the rear wall part and the wheel can be suppressed.

  According to the vehicle spats of the first aspect, it is possible to obtain an excellent effect that the aerodynamic performance of the vehicle can be further improved.

  According to the vehicle spats of the second aspect, it is possible to obtain an excellent effect that the generation of the vortex between the rear wall portion and the wheel can be suppressed at an early stage.

  According to the vehicle spats of the third aspect, it is possible to obtain an excellent effect that both the rectifying action by the rear wall portion and the improvement of the aerodynamic performance of the vehicle by the slit can be achieved.

  According to the vehicle lower structure according to the fourth aspect, an excellent effect that a vehicle having excellent aerodynamic performance can be provided is obtained.

It is a fragmentary sectional view which shows the state which looked at the vehicle lower part structure concerning this embodiment from the vehicle side. It is a perspective view which shows the spats for vehicles.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In FIG. 1, an arrow FR indicates the front of the vehicle, and an arrow UP indicates the upper side of the vehicle. In FIG. 2, an arrow RH indicates the vehicle right direction.

  In FIG. 1, the vehicle lower structure S according to the present embodiment includes vehicle spats 10. The vehicle spats 10 are provided on the vehicle front side of the wheel 12 that contacts the road surface 11 and are used under the floor of the vehicle 13. The wheel 12 is, for example, a front wheel. The under floor of the vehicle 13 is, for example, the vehicle lower side of the engine under cover 14. In the illustrated example, the vehicle spats 10 are fixed along the bottom surface of the engine under cover 14. The vehicle spats 10 may be fixed or movable in the vehicle vertical direction. When the vehicle spats 10 are movable, the vehicle spats 10 are disposed, for example, under the floor of the vehicle 13 when in use, and are stored on the vehicle upper side of the engine under cover 14 when not in use.

  A substantially semicircular fender liner 16 is provided around the vehicle 12 on the vehicle upper side in a side view of the vehicle. The lower end of the fender liner 16 in front of the vehicle is located near the rear end of the engine under cover 14.

  1 and 2, the vehicle spats 10 are, for example, an integrally molded product of resin or rubber, and are formed in, for example, a triangle in plan view, and widen in the vehicle width direction toward the rear of the vehicle. The vehicle spats 10 include a bottom wall portion 18, side wall portions 20 and 22, and a rear wall portion 24 that are rectifying portions. Further, the vehicle spats 10 have a bottomed shape with the vehicle upper side opened, and a slit 26 as an example of a ventilation portion through which air can pass is provided in the rear wall portion 24 facing the wheel 12. An opening portion is provided at an attachment site of the vehicle spats 10 in the engine under cover 14. As a result, the open side of the vehicle spats 10 communicates with the vehicle upper side of the engine under cover 14.

  A front wall portion 28 is provided on the vehicle front side of the rear wall portion 24. The front wall portion 28 is connected to the side wall portions 20 and 22 and the bottom wall portion 18 and faces obliquely downward in front of the vehicle. The front wall portion 28 is separated from the rear wall portion 24 and faces the rear wall portion 24. The front wall portion 28 is a portion that guides a part of the traveling wind toward the bottom wall portion 18 when the vehicle travels, and the load when the vehicle spats 10 come into contact with a foreign object (not shown) on the road surface 11. This is the part that becomes the receiving surface.

  In other words, the configuration of the vehicle spats 10 is such that the bottom wall portion 18 is provided between the front wall portion 28 and the rear wall portion 24 and connects the lower portion of the front wall portion 28 and the lower portion of the rear wall portion 24. Yes. The side wall portions 20 and 22 are provided between the rear wall portion 24 and the front wall portion 28, and connect the side portion of the rear wall portion 24, the side portion of the front wall portion 28, and the side portion of the bottom wall portion 18. Are connected. The side wall portion 20 is located on the vehicle right side of the bottom wall portion 18, and the side wall portion 22 is located on the vehicle left side of the bottom wall portion 18.

  The bottom wall portion 18 is formed in a trapezoidal shape in plan view, and the lower end of the front wall portion 28 is located at the front end corresponding to the upper bottom of the trapezoid. The right side wall portion 20 is erected above the vehicle from the vehicle right side of the bottom wall portion 18. The left side wall portion 22 is erected above the vehicle from the left side of the vehicle in the bottom wall portion 18. The rear wall portion 24 is erected above the vehicle from the vehicle rear side corresponding to the lower bottom of the trapezoid of the bottom wall portion 18. The left end of the rear wall portion 24 is coupled to the rear end of the left side wall portion 22, and the right end of the rear wall portion 24 is coupled to the rear end of the right side wall portion 20. The upper sides of the right side wall part 20 and the left side wall part 22 are connected to each other at the front end of the vehicle spats 10.

  The front wall portion 28 is provided at an end portion of the vehicle spats 10 on the vehicle front side. The front wall portion 28 is configured in a substantially triangular plane, for example. Accordingly, the width of the front wall portion 28 in the vehicle width direction is widest at the lower end and narrows toward the upper end. Three sides of the front wall portion 28 are respectively coupled to the bottom wall portion 18, the right side wall portion 20, and the left side wall portion 22.

  The slit 26 is provided at least in the lower portion of the rear wall portion 24. In the illustrated example, the slit 26 is a through hole (long hole) whose longitudinal direction is the vehicle vertical direction, and is formed from the upper part to the lower part of the rear wall part 24. If the height of the rear wall portion 24 in the vehicle vertical direction is an average height, the lower portion is, for example, a region of ３ of the average height of the rear wall portion 24 from the lower side of the rear wall portion 24 to the vehicle upper side. . The upper portion is, for example, a region of の of the average height of the rear wall portion 24 from the upper side of the rear wall portion 24 to the vehicle lower side. When a region sandwiched between the upper part and the lower part is a central part, the slit 26 is formed across a part of the upper part, the central part, and a part of the lower part of the rear wall part 24.

  Further, the slits 26 are formed, for example, in three places in the vehicle width direction. The longitudinal direction of the slit 26 is not limited to the vehicle vertical direction, and may be the vehicle width direction, or may be inclined with respect to the vehicle vertical direction and the vehicle width direction.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 1, the vehicle lower structure S according to the present embodiment has a vehicle spats 10, and traveling wind flowing under the vehicle is rectified by the vehicle spats 10 when the vehicle is traveling. In the example shown in the figure, the air flow toward the wheel 12 can be guided to the left and right of the wheel 12 by the left and right side wall portions 20 and 22 (FIG. 2), and the air resistance can be reduced.

  When viewed from the side of the vehicle, the traveling wind flowing under the vehicle flows in the direction of arrow A along the vehicle underside of the engine under cover 14, the front wall portion 28, and the bottom wall portion 18. The traveling wind passing through the upper side of the engine under cover 14 flows into the vehicle spats 10 from the upper side of the vehicle spats 10. In the vehicle spats 10, the rear wall portion 24 facing the wheel 12 is provided with a slit 26 as a ventilation portion through which air can pass. Therefore, when the vehicle travels, air on the vehicle front side of the rear wall portion 24 flows. , And supplied between the rear wall portion 24 and the wheel 12 through the slit 26. Accordingly, the traveling wind flowing along the vehicle lower side of the bottom wall portion 18 is suppressed from flowing from the vehicle lower side between the rear wall portion 24 and the wheel 12.

  In particular, in the present embodiment, since the slit 26 is provided at least at the lower portion of the rear wall portion 24, the flow of the traveling wind from the vehicle lower side between the rear wall portion 24 and the wheel 12 is reduced. Suppressed early.

  As described above, in the vehicle lower part structure according to the present embodiment, the vehicle spats 10 can rectify the traveling wind in the lower part of the vehicle and suppress the generation of vortex between the rear wall part 24 and the wheel 12. Moreover, since the ventilation part is the slit 26, the reduction | decrease in the area of the rear wall part 24 is suppressed, and the rectification | straightening effect | action of this rear wall part 24 is securable. For this reason, it is possible to further improve the aerodynamic performance of the vehicle, and to provide a vehicle with excellent aerodynamic performance.

[Other Embodiments]
As mentioned above, although an example of embodiment of this invention was demonstrated, embodiment of this invention is not limited above, In addition to the above, in a range which does not deviate from the main point, it can implement variously. Of course there is. For example, although the vehicle spats 10 are triangular in plan view, the shape of the vehicle spats 10 in plan view is not limited to this, and may be trapezoidal or streamlined.

  For example, although the slit 26 was mentioned as an example of a ventilation part, the structure of a ventilation part is not restricted to this, What is necessary is just the structure which can pass the air through the rear wall part 24. FIG. Therefore, the ventilation part may be a through hole such as a circle or a polygon, or a notch. For example, when the slit 26 shown in FIG. 2 is extended to open to the upper side of the rear wall 24, a notch is formed (not shown).

  Moreover, although the slit 26 as a ventilation part shall be provided in the at least lower part of the rear wall part 24, the structure provided in the upper part of the rear wall part 24 may be sufficient. The position of the ventilation portion and the ratio of the opening area of the ventilation portion to the entire area of the rear wall portion 24 are appropriately changed.

  In FIG. 1, the inner wall of the slit 26 is formed in parallel with the vehicle front-rear direction. However, for example, when the rear wall 24 is thick, the inner wall is inclined downward toward the vehicle rear side. May be. By guiding the flow of air passing through the rear wall portion 24 obliquely downward on the rear side of the vehicle, the traveling wind flowing along the vehicle lower portion of the bottom wall portion 18 is located below the vehicle between the rear wall portion 24 and the wheel 12. It can be made difficult to flow in from the side.

  Although the wheel 12 is assumed to be the front wheel, this does not prevent application to the rear wheel (not shown) of the vehicle spats 10.

DESCRIPTION OF SYMBOLS 10 Vehicle spats 12 Wheel 18 Bottom wall part 20 Right side wall part 22 Left side wall part 24 Rear wall part 26 Slit (ventilation part)
28 Front wall S Vehicle lower structure

Claims (4)

  Provided on the vehicle front side of the wheel and used under the floor of the vehicle, and has a bottom wall portion, a side wall portion, and a rear wall portion serving as a rectifying portion, and has a bottomed shape with the vehicle upper side open, and faces the wheel. A vehicle spat provided with a ventilation portion through which air can pass in the rear wall portion.   The vehicular spats according to claim 1, wherein the ventilation portion is provided at least at a lower portion of the rear wall portion.   The vehicle spats according to claim 1, wherein the ventilation portion is a slit.   The vehicle lower part structure provided with the spats for vehicles of any one of Claims 1-3.

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