JP2007055425A - Wind pressure resistance reduction device for wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind pressure resistance reduction device for wheel capable of reducing resistance generated at a wheel by reducing running wind pressure received by the wheel. <P>SOLUTION: This wind pressure resistance reduction device 10 is provided with a deflector 11 constituted of a front deflector 12 and a rear deflector 13 disposed, ahead of a front wheel 2 in the running direction, at a predetermined interval L in the longitudinal direction of a vehicle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for reducing wind pressure resistance of a wheel, and more particularly to an apparatus for reducing wind pressure resistance of a wheel that reduces resistance caused by traveling wind pressure applied to the wheel during traveling of the vehicle.

As a conventional deflector provided in the vicinity of a vehicle wheel, there is one arranged behind the wheel. The deflector includes a mud guard having a curved shape that guides an air flow directed rearward along both the inner and outer sides of the wheel to the outside of the vehicle body, and a fin that guides the air flow directed rearward along the mud guard downward. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 60-110178 (page 3, FIG. 5)

  However, the conventional deflector has a function of reducing the wind pressure resistance generated when the traveling wind that has passed through the wheels collides with the rear wall disposed behind the wheels. However, the conventional deflector depends on the wind pressure that the wheels themselves receive from the traveling wind. It was difficult to reduce the resistance.

  Therefore, the present invention provides a wind pressure resistance reducing device for a wheel that can reduce the traveling wind pressure received by the wheel and reduce the resistance generated on the wheel.

  The apparatus for reducing wind pressure resistance of a wheel according to the present invention most preferably includes a plurality of deflectors arranged at a predetermined interval in the vehicle front-rear direction, in front of the wheels provided in the vehicle, in a vehicle front-rear direction. Main features.

  According to the present invention, since the flow velocity of the traveling wind can be reduced in front of the wheel by the deflector serving as the traveling wind resistance means, the traveling wind pressure acting on the wheel is reduced to reduce the resistance generated on the wheel. be able to.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is a side view showing a front end portion of a vehicle in which a wind pressure resistance reducing device according to an embodiment of the present invention is disposed, FIG. 2 is a perspective view showing the wind pressure resistance reducing device according to an embodiment of the present invention, and FIG. 3 is a front view of FIG. 4 and 4 are perspective views of a deflector used in the wind pressure resistance reducing apparatus according to the embodiment of the present invention.

  As shown in FIGS. 1 to 3, four wheels 2 are provided before and after the automobile 1, and the wind pressure resistance reduction device 10 of the present embodiment is applied to the front wheels 2. A deflector 11 that reduces the flow velocity of the traveling wind W toward the front wheel 2 is provided in front of the front wheel 2 in the traveling direction (left side in the figure).

  The deflector 11 is configured by a plate-like member that is fixed to the vehicle body side substantially orthogonal to the traveling direction of the traveling wind W that passes through the lower side of the front bumper 3 and travels toward the front wheel 2.

  Further, in the present embodiment, the deflector 11 is configured in a two-stage manner by a plurality of deflectors arranged at a predetermined interval L in the vehicle longitudinal direction, that is, the front deflector 12 and the rear deflector 13.

  That is, the two-stage deflector 11 is formed by bending a steel plate into an inverted U shape as shown in FIG. 4 and using the hanging piece bent at the front of the vehicle as the front deflector 12 at the rear of the vehicle. The bent drooping piece is used as the rear deflector 13, and a mounting portion 14 is formed between the front deflector 12 and the rear deflector 13.

  The width wd in the vehicle width direction of the rear deflector 13 is formed corresponding to the tire width of the front wheel 2 as shown in FIG. 3, and the distance L between the front and rear deflectors 12 and 13 is For example, it is set to about 50 mm to 150 mm.

  FIG. 5 is a perspective view of the front end portion of the vehicle showing the mounting state of the deflector used in the embodiment of the present invention, and FIG. 6 is a schematic diagram showing the wind pressure distribution when the traveling wind hits the deflector and the wheel. (A) is a case of a one-stage type deflector, and (b) is a case of a two-stage type deflector.

  As shown in FIG. 5, an under cover 4 is provided to cover the lower side of the engine, and the deflector 11 is attached to a portion of the under cover 4 located in front of the front wheel 2 in the mounting hole 14 a of the mounting portion 14. It is fixed via a bolt 15 inserted through (see FIG. 4).

  At this time, as shown in FIG. 3, the area of the front deflector 12 is made smaller than that of the rear deflector 13 so that the front deflector 12 has a smaller pressure receiving area than the rear deflector 13, and these front and rear deflectors are also used. 12 and 13 are arranged so as to overlap each other when viewed from the front-rear direction of the vehicle. In other words, the front and rear projection surfaces S of the front deflector 12 (shown by diagonal lines in FIG. 2) are arranged so as to be included within the area of the rear deflector 13.

  Further, when the front deflector 12 and the rear deflector 13 are arranged in this way, the lower end position 12a of the front deflector 12 is arranged above the lower end position 13a of the rear deflector 13, as shown in FIG. The vehicle width direction outer end position 12b of the front deflector 12 is disposed more inward in the vehicle width direction than the vehicle width direction outer end position 13b of the rear deflector 13.

  Below, the effect of the wind pressure resistance reduction apparatus 10 of the wheel by embodiment of this invention is demonstrated.

  First, since the deflector 11 that reduces the flow velocity of the traveling wind W toward the front wheel 2 is provided in front of the front wheel 2 in the traveling direction, the flow velocity of the traveling wind W flowing to the front wheel 2 is decreased by the deflector 11 while the vehicle 1 is traveling. Can do.

  Therefore, as shown in FIG. 6, after the traveling wind W collides with the deflector 11, the traveling wind W is released to the side and the lower side of the deflector 11. It is formed. In the one-stage deflector 11A shown in FIG. 6A, the front surface of the deflector 11A directly receives the traveling wind W, so that the highest high wind pressure region P4 is formed. However, the position is within the front-rear direction projection plane of the deflector 11A. The lowest low wind pressure region P1 is formed in the substantially upper half portion of the front surface of the front wheel 2 and the middle and high wind pressure regions P3 lower than the high wind pressure region P4 are formed in the lower portion thereof.

  On the other hand, in the two-stage deflector 11 shown in FIG. 6B, the highest wind pressure region P4 is formed in the front deflector 12 that directly receives the traveling wind W, similarly to the one-stage deflector 11A. The lowest low wind pressure region P1 is formed in the upper part of the rear deflector 13 where the front-rear direction projection plane 12 is located, and the middle and high wind pressure region P3 is formed in the lower part of the rear deflector 13 which is the lower part thereof.

  Since the traveling wind W is released in two stages by the front deflector 12 and the rear deflector 13 in this way, the front deflector 12 is positioned on the substantially upper half of the front surface of the front wheel 2 located in the front-rear direction projection plane. The lowest low wind pressure region P1 is formed, and the middle and low wind pressure regions P2 slightly higher than the low wind pressure region P1 are formed on the front surface of the wheel 2 in the lower part thereof.

  At this time, the height relationship between the pressures P1, P2, P3, and P4 in the wind pressure region is P1 <P2 <P3 <P4.

  Therefore, by providing the one-stage deflector 11A and the two-stage deflector 11, a wind pressure reduction region due to the traveling wind W is formed on the front surface of the front wheel 2, and the resistance generated on the front wheel 2 by the wind pressure can be reduced. .

  In particular, in the two-stage deflector 11, the wind pressure region formed in the lower part of the front surface of the front wheel 2 is P2, and the wind pressure received by the front wheel 2 is different from the wind pressure region of the one-stage deflector 11A which is P3. Therefore, when the two-stage deflector 11 is provided, the resistance acting on the front wheel 2 becomes smaller, and the resistance value at that time of the two-stage deflector 11 is smaller than that of the one-stage deflector 11A. In this case, about 1/3.

  Further, in the present embodiment, in addition to the above-described effects, a plate-like member that is fixed to the vehicle body side substantially orthogonal to the traveling direction of the traveling wind W that passes through the deflector 11 below the front bumper 3 and travels toward the front wheels 2. Since the travel wind W is reliably received by the deflector 11 because it is formed, it can be released so as not to hit the front wheel 2, so that the wind pressure acting on the front wheel 2 can be further reduced.

  Further, the deflector 11 is configured in a two-stage manner by a plurality of front deflectors 12 and rear deflectors 13 arranged at a predetermined interval L in the vehicle front-rear direction, whereby the flow velocity of the traveling wind W is reduced by the front deflector 12. Furthermore, since the flow velocity can be further reduced by the rear deflector 13, the effect of reducing the wind pressure acting on the front wheel 2 can be further enhanced.

  Furthermore, the area of the front deflector 12 is made smaller than that of the rear deflector 13, and the front deflector 12 is made smaller in pressure receiving area of the wind pressure than the rear deflector 13, and these front and rear deflectors 12, 13 are arranged in the front and rear of the vehicle. Since they are arranged in a state of being overlapped when viewed from the direction, the traveling wind W can be gradually released outward from the front deflector 12 to the rear deflector 13, and as a result, the wind pressure acting on the front wheels 2 is further reduced. be able to.

  Further, when the pressure receiving area of the front deflector 12 is made smaller than that of the rear deflector 13 in this way, the lower end position 13a of the front deflector 12 is disposed above the lower end position 12a of the rear deflector 13, and the front deflector 12 is disposed. Since the vehicle width direction outer end position 13b is disposed inward in the vehicle width direction with respect to the rear deflector 12 in the vehicle width direction, the traveling wind W received in order from the front deflector 12 to the rear deflector 13 is sequentially received. In addition, it is possible to efficiently escape outward and downward in the vehicle width direction with respect to the front wheel 2, and the wind pressure acting on the front wheel 2 can be effectively reduced.

  7 is a perspective view of a deflector used in another embodiment of the present invention, and FIG. 8 is an enlarged perspective view showing the deflector on the front side of FIG. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In the wheel wind pressure resistance reducing apparatus 10 of this embodiment, as shown in FIG. 7, the front deflector 22 and the rear deflector 23 constitute a two-stage deflector 21, but the front deflector 22 and the rear deflector 23. And are arranged separately.

  In this embodiment, a first mounting portion 25 that protrudes toward the front of the vehicle is provided at the center of the upper edge of the rectangular plate 24 that serves as the deflector body portion, and a first protrusion that protrudes toward the rear of the vehicle at both ends of the upper edge. Two mounting portions 26 and 26 are provided, and the first mounting portion 25 and the second mounting portions 26 and 26 are fixed to the vehicle body side by bolts (or clips) 27.

  Therefore, according to the present embodiment, since the deflector 21 is formed by the front and rear deflectors 22 and 23, the same operational effects as in the above embodiment can be obtained.

  Here, even in the present embodiment, the deflector 21 has the front deflector 22 smaller in area than the rear deflector 23, and the front deflector 22 has a wind pressure receiving area smaller than the rear deflector 23. The front and rear deflectors 22 and 23 are arranged in a state of being overlapped when viewed from the vehicle front-rear direction.

  Further, when the front deflector 22 and the rear deflector 23 are disposed, the lower end position 22a of the front deflector 22 is disposed above the lower end position 23a of the rear deflector 23, and the outer end in the vehicle width direction of the front deflector 22 is disposed. The position 22b is disposed more inward in the vehicle width direction than the outer end position 23b in the vehicle width direction of the rear deflector 23.

  FIG. 9 is a perspective view of a deflector used in still another embodiment of the present invention, in which the front deflector is comb-shaped. FIG. 10 is a perspective view of a deflector used in still another embodiment of the present invention, in which a plurality of openings are formed in the front deflector.

  The deflector 31 shown in FIG. 9 and the deflector 41 shown in FIG. 10 are two-staged by front deflectors 32 and 42 and rear deflectors 33 and 43, respectively, as shown in FIGS. It is configured.

  Each of the deflectors 31 and 41 is configured such that the area of the front deflectors 32 and 42 is smaller than that of the rear deflectors 33 and 43 and the pressure receiving area of the wind pressure is set small. However, the deflector 31 shown in FIG. The pressure receiving area is reduced by forming a plurality of notches 32 in a comb-like shape having a plurality of notches 34, and the deflector 41 shown in FIG. 10 receives the pressure by forming a plurality of circular openings 44 in the front deflector 42. The area is reduced. In this case, the hole shape of the opening 44 is not limited to a circular shape, and any other shape can be employed.

  Therefore, even in the wind pressure resistance reduction apparatus using the deflectors 31 and 41 shown in FIGS. 9 and 10, the same effect as that of the above embodiment can be obtained.

  Moreover, although the case where the wind pressure resistance reducing device 10 was applied to the front wheel 2 was shown in each of the above embodiments, the front wheel 2 and the rear wheel 5 are respectively shown in a perspective view of the automobile 1 shown in FIG. Correspondingly, any one of the deflectors 11, 21, 31, and 41 shown in the embodiment is provided.

  When the wind pressure resistance reducing device 10 is provided corresponding to the rear wheel 5, the rear sill portion in which the deflectors 11, 21, 31, 41 are extended along the front-rear direction on both sides in the vehicle width direction of the vehicle body floor is provided. Can be attached to the end.

  Thus, by providing any of the deflectors 11, 21, 31, 41 on the front wheel 2 and the rear wheel 5, the wind pressure resistance acting on the rear wheel 5 as well as the front wheel 2 is reduced, and the resistance value of the entire vehicle 1 is reduced. Can be reduced.

  By the way, in each said embodiment, although the deflector was provided in two places in the front-back direction, you may provide not only this but three or more places. Moreover, although this invention was demonstrated taking the example for each said embodiment, various other embodiment can be employ | adopted in the range which is not restricted to these embodiments and does not deviate from the summary of this invention.

It is a side view which shows the vehicle front-end part which arrange | positioned the wind-pressure-resistance reduction apparatus in embodiment of this invention. It is a perspective view which shows the wind pressure resistance reduction apparatus in embodiment of this invention. FIG. 3 is a front view of FIG. 2. It is a perspective view of the deflector used for the wind pressure resistance reduction apparatus in embodiment of this invention. It is a perspective view of the vehicle front end part which shows the attachment state of the deflector used for embodiment of this invention. It is the schematic which shows the wind pressure distribution when driving | running | working wind hits a deflector and a wheel, (a) is a case of a 1 step | paragraph type deflector among this figure, (b) is a case of a 2 step | paragraph type deflector. . It is a perspective view of a deflector used for other embodiments of the present invention. It is an expansion perspective view which shows the deflector of the front side of FIG. It is a perspective view of the deflector used for other embodiment of this invention, and the front deflector is made into comb-tooth shape. It is a perspective view of the deflector used for other embodiment of this invention, and forms several opening part in the front deflector. It is the perspective view which looked at the vehicle which arrange | positioned the deflector which concerns on embodiment of this invention from diagonally downward.

Explanation of symbols

2 Front wheels
5 Rear wheels
DESCRIPTION OF SYMBOLS 10 Wind pressure resistance reduction apparatus 11, 11A, 21, 31, 41 Deflector 12, 22, 32, 42 Front deflector (front deflector)
12a, 22a Lower end position of the front deflector 12b, 22b Outer position in the vehicle width direction of the front deflector 13, 23, 33, 43 Rear deflector (rear deflector)
13a, 23a Lower end position of rear deflector 13b, 23b Outer end position of rear deflector in vehicle width direction W Running wind

Claims (5)

  An apparatus for reducing wind pressure resistance of a wheel, comprising a plurality of deflectors arranged in the vehicle front-rear direction at a predetermined interval in front of a wheel provided in the vehicle in a traveling direction.   At least two deflectors are provided at intervals in the front-rear direction, and the front-side deflector of these deflectors has a smaller wind pressure receiving area than the rear-side deflector, and the front-rear deflectors are overlapped when viewed from the front-rear direction of the vehicle. The device for reducing wind pressure resistance of a wheel according to claim 1, wherein the device is arranged as described above.   The lower end position of the front deflector is disposed above the lower end position of the rear deflector, and the outer end position in the vehicle width direction of the front deflector is set in the vehicle width direction relative to the outer end position in the vehicle width direction of the rear deflector. The wind pressure resistance reducing device for a wheel according to claim 2, wherein the device is arranged inward.   The wind pressure resistance of a wheel according to any one of claims 1 to 3, wherein the deflector is a plate-like member fixed to the vehicle body side in a state substantially orthogonal to the traveling direction of the traveling wind toward the wheel. Reduction device. The wind pressure resistance reduction device for a wheel according to any one of claims 1 to 4, wherein the deflector is provided corresponding to each of a front wheel and a rear wheel.

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