JP2021014228A - Wheel structure of vehicle - Google Patents

Abstract

To solve the problem that is desired to be improved in a vehicle.SOLUTION: Wheels 10 provided at left and right sides in a vehicle width direction of a vehicle body 2 of a vehicle 1 have: a hub 12 pivotally supported on the vehicle 1 rotatably; a wheel 14 having a rim part 21 in an annular shape and a plurality of spoke parts 22 for attaching the rim part 21 to the hub 12; a brake disc 13 mounted on the hub 12; and an exhaust port 33 formed in the wheel 14. The brake disc 13 and the wheel 14 are mounted on the hub 12 so that a space 16 is formed between the brake disc 13 and the rim part 21 in an annular shape with respect to the wheel 14. The exhaust port 33 is formed in the wheel 14 so as to suppress air flow flowing through the space between the brake disc 13 and the rim part 21 in an annular shape toward the side of the vehicle 1.SELECTED DRAWING: Figure 2

Description

The present invention relates to a wheel structure of a vehicle.

In automobiles, wheels are used for running. The wheel has a wheel as in Patent Document 1. The plurality of wheels are basically provided near the four corners of the vehicle body.
In such a vehicle, it is required to reduce the air resistance during traveling. For this reason, the vehicle body is shaped to follow a streamlined shape with less surface irregularities. Further, the wheels are housed in wheel houses provided on the left and right side surfaces of the vehicle body in the vehicle width direction.

Japanese Unexamined Patent Publication No. 08-244401

However, even if the wheels are housed in the wheel house in this way, a part of the airflow flowing under the floor of the vehicle is blown into the wheels and blown out from the wheels. The airflow that blows out from the wheels disturbs the airflow that flows along the left and right sides of the vehicle body in the vehicle width direction. As a result, the air resistance of the vehicle increases.

In this way, vehicles are required to be improved.

The wheel structure of the vehicle according to the present invention is a wheel provided on the left and right side surfaces of the vehicle body in the vehicle width direction, and includes a hub rotatably supported by the vehicle, an annular rim portion, and the rim. A wheel having a plurality of spoke portions for attaching a portion to the hub, a brake disc attached to the hub, and an exhaust port formed on the wheel, and the brake disc and the wheel are the brake disc. The hub is provided with the hub so as to form a space between the wheel and the annular rim portion of the wheel, and the exhaust port is the exhaust port between the brake disc and the circumferential rim portion. It is formed on the wheel so as to suppress the airflow flowing from the space toward the side surface of the vehicle.

Preferably, the brake disc is attached to the hub so that the ring-shaped rim portion of the wheel is located outside the brake disc, and the exhaust port is outside the brake disc in the vehicle width direction. It is preferable that the wheel is formed so as to open to the inner surface of the wheel at a portion thereof and to blow out an air flow toward the space between the brake disc and the circumferential rim portion.

Preferably, the brake disc is attached to the hub so that the ring-shaped rim portion of the wheel is located outside the brake disc, and the exhaust port is the wheel at a portion facing the brake disc. It is preferable that the wheel is formed so as to open to the inner surface of the brake disc and blow out an air flow toward the brake disc.

Preferably, the brake disc is attached to the hub so that the ring-shaped rim portion of the wheel is located on the outside of the brake disc, and the exhaust port is inside the brake disc in the vehicle width direction. It is preferable that the brake disc is formed so as to open to the inner surface of the wheel and to blow out an air flow toward the inside in the vehicle width direction of the brake disc.

Preferably, it has an air guide that communicates with the exhaust port, and the air passage is formed in the spoke portion of the wheel.

Preferably, it has an air guide that communicates with the exhaust port and a wheel cover that is overlapped on the outside of the plurality of spoke portions of the wheel, and the air guide is provided with respect to the spoke portions of the wheel. It is preferable that it is formed by stacking the wheel covers.

Preferably, the hub has an intake port formed on the inner side surface of the hub on the central side in the vehicle width direction of the vehicle, and the exhaust port ejects the airflow taken in from the intake port.

In the present invention, the brake disc and the wheel are attached to the hub so as to form a space between the brake disc and the ring-shaped rim portion of the wheel. This can reduce the airflow that enters between the brake disc and the wheel. Moreover, the exhaust port is formed on the wheel so as to suppress the air flow flowing from the space between the brake disc and the circumferential rim portion toward the side surface of the vehicle. The airflow ejected from the exhaust port can reduce the airflow entering between the brake disc and the wheel. Due to these synergistic effects, the present invention can effectively reduce the airflow ejected from the wheels provided in the wheel house formed on the side surface of the vehicle in the vehicle width direction of the vehicle. As a result, in the present invention, it becomes difficult to disturb the airflow along the side surface of the vehicle due to the airflow ejected outward from the wheels. The air resistance of the vehicle can be improved.

FIG. 1 is an explanatory diagram of an automobile as a vehicle according to an embodiment of the present invention. FIG. 2 is an explanatory view of a wheel structure according to the first embodiment of the present invention. FIG. 3 is an outside view of the wheel of FIG. FIG. 4 is an explanatory view of a wheel structure according to a second embodiment of the present invention. FIG. 5 is an explanatory view of a wheel structure according to a third embodiment of the present invention. FIG. 6 is an explanatory diagram of a wheel structure according to a fourth embodiment of the present invention. FIG. 7 is an explanatory view of the structure of the first modification of the wheel according to the first embodiment of the present invention. FIG. 8 is an explanatory view of the structure of a second modification of the wheel according to the first embodiment of the present invention. FIG. 9 is an explanatory view of the structure of a third modification of the wheel according to the first embodiment of the present invention.

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

[First Embodiment]

FIG. 1 is an explanatory diagram of an automobile 1 as a vehicle according to an embodiment of the present invention.
FIG. 1A is a schematic side view of the automobile 1. FIG. 1B is a bottom view showing the underfloor of the automobile 1.
The automobile 1 is an example of a vehicle.
The automobile 1 of FIG. 1 has a vehicle body 2. A plurality of wheel houses 3 opening on the side surfaces are formed side by side on the left and right side surfaces of the vehicle body 2 in the vehicle width direction. A plurality of wheels 10 for traveling are accommodated and provided in the plurality of wheel houses 3. The front wheel 10 is rotatably supported by the lower arm 4. The rear wheel 10 is rotatably supported by the axle case 5 together with the axle housed in the axle case 5. The lower arm 4 and the axle case 5 are attached to the vehicle body 2.

Even if the wheels 10 are housed in the wheel house 3 in this way, as shown in FIG. 1 (B), a part of the airflow flowing under the floor of the automobile 1 is blown into the wheels 10 and blown out from the wheels 10. The airflow ejected from the wheels 10 disturbs the airflow flowing along the left and right side surfaces of the vehicle body 2 in the vehicle width direction. As a result, the air resistance of the automobile 1 increases.
As described above, the automobile 1 is required to be improved.

FIG. 2 is an explanatory diagram of the structure of the wheel 10 according to the first embodiment of the present invention. FIG. 2 is a bottom view of the wheel 10 as viewed from below.
FIG. 3 is an outside view of the wheel 10 of FIG.
The wheel 10 of FIGS. 2 and 3 has a bearing member 11, a hub 12, a brake disc 13, a wheel 14, and a rubber tire 15.

The bearing member 11 is attached to the lower arm 4 or the axle case 5 in order to attach the wheel 10 to the vehicle body 2.

The hub 12 has a substantially cylindrical shape. The hub 12 having a substantially cylindrical shape is rotatably supported by the bearing member 11 so that the shaft basically follows the vehicle width direction. The hub 12 of the driving wheel 10 may be connected to an axle that transmits a rotational driving force to the hub 12.

The brake disc 13 has a substantially disk shape. The hub 12 is mounted coaxially with the hub 12 in a state where the hub 12 is inserted into a hole formed in the center of a substantially disk-shaped brake disc 13. The hub 12 projects to both sides of the brake disc 13 having a substantially disk shape in the vehicle width direction. The brake disc 13 constitutes a brake unit that brakes the rotation of the wheel 10 together with a caliper unit (not shown).

The wheel 14 has a center portion 20, a rim portion 21, and a plurality of spoke portions 22 as side surface portions. The wheel 14 may be formed of a lightweight and highly rigid material such as aluminum.
The center portion 20 has a substantially disc shape having substantially the same diameter as the hub 12 having a substantially cylindrical shape. The substantially disk-shaped center portion 20 is screwed to the hub 12 concentrically with the substantially cylindrical hub 12 so as to overlap the outer surface of the substantially cylindrical hub 12 in the vehicle width direction.
The rim portion 21 has an annular shape.
The plurality of spoke portions 22 are provided so as to be bridged between the center portion 20 and the ring-shaped rim portion 21, and connect them. The plurality of spoke portions 22 are connected so that the substantially disc-shaped center portion 20 and the annular-shaped rim portion 21 are coaxial with each other. As shown in FIG. 3, the plurality of spoke portions 22 are arranged at equal angles to each other in the circumferential direction. A cooling hole 23 is formed between the pair of adjacent spoke portions 22. The brake disc 13 is located inside the cooling hole 23 in the vehicle width direction so as to substantially overlap.

The rubber tire 15 is formed in an annular shape by an elastic material such as a rubber material. The rubber tire 15 may be formed in a tube shape. The ring-shaped rubber tire 15 is mounted on the outside of the ring-shaped rim portion 21 of the wheel 14. A closed region into which high-pressure gas can be injected is formed between the rubber tire 15 and the side surface portion.

Then, in the present embodiment, as shown in FIG. 2, the wheel 14 and the brake disc 13 are close to each other so that the brake disc 13 is located at the center of the annular rim portion 21 of the wheel 14 in the vehicle width direction. Then, it is attached to the hub 12. The ring-shaped rim portion 21 of the wheel 14 is located outside the outer circumference of the brake disc 13. As described above, a minute ring-shaped space 16 is formed between the outer circumference of the substantially disk-shaped brake disc 13 and the inner surface of the ring-shaped rim portion 21 of the wheel 14 at a very narrow interval. To. It becomes difficult for the airflow flowing under the vehicle body 2 to enter the space 16.

Further, in the present embodiment, in order to prevent the airflow flowing under the vehicle body 2 from flowing into the wheels 10 and further ejecting from the wheels 10 to the outside, a plurality of sets of intake ports 31 and air guide paths are provided for the wheels 10. 32 and an exhaust port 33 are provided.
The intake port 31 is formed on the inner side surface of the hub 12 which is the central side in the vehicle width direction of the automobile 1. The plurality of intake ports 31 may be arranged along the circumferential direction on the inner surface of the substantially disk shape of the hub 12.
The exhaust port 33 is basically formed on the inner surface of the wheel 14. In the present embodiment, the exhaust port 33 is formed on the inner surface of the outer peripheral side end portion of the spoke portion 22 of the wheel 14.
The air guide path 32 communicates the intake port 31 and the exhaust port 33. The air duct 32 extends along the axial direction of the hub 12 having a substantially cylindrical shape. Further, the air guide path 32 is formed through the inside of the portion of the wheel 14 extending from the center portion 20 to the spoke portion 22. The air guide path 32 may be a single passage that connects the intake port 31 and the exhaust port 33.

By providing such a ventilation structure, the wheel 10 of the present embodiment has an intake port 31 formed at a position separated inward from the wheel 14 and the brake disc 13 of the hub 12, and the vehicle width direction from the brake disc 13. It has an exhaust port 33 that opens to the inner surface of the wheel 14 at a portion that becomes the outer side of the wheel 14. The intake port 31 takes in a part of the airflow under the floor that is not affected by the rotation of the wheel 14 and the brake disc 13. The exhaust port 33 blows airflow from the outside to the inside toward the minute space 16 between the outer circumference of the brake disc 13 and the circumferential rim portion 21. Due to the airflows in the opposite directions, the airflow flowing from the minute space 16 between the outer circumference of the brake disc 13 and the circumferential rim portion 21 toward the side surface of the automobile 1 can be weakened or reduced. .. The strength and amount of airflow ejected from the wheels 10 can be effectively suppressed.

As described above, in the present embodiment, the brake disc 13 and the wheel 14 are formed on the hub 12 so as to form a minute space 16 between the outer circumference of the brake disc 13 and the ring-shaped rim portion 21 of the wheel 14. Can be taken. As a result, it is possible to reduce the amount of airflow flowing under the floor of the vehicle body 2 entering between the brake disc 13 and the wheel 14.
Moreover, in the present embodiment, the exhaust port 33 formed on the inner surface of the wheel 14 communicates with the intake port 31 formed on the inner side surface of the hub 12 which is the central side in the vehicle width direction of the automobile 1. Therefore, the intake port 31 is provided at a position closer to the center side in the vehicle width direction than the wheel house 3 and the brake disc 13. The exhaust port 33 can blow out the airflow on the central side of the automobile 1 in the vehicle width direction with respect to the wheels 10. The exhaust port 33 can stably blow out the airflow on the center side in the vehicle width direction of the automobile 1. The airflow discharged from the exhaust port 33 can be a vigorous airflow that can affect the airflow that is about to flow from the center side in the vehicle width direction toward the holes between the plurality of spoke portions 22 of the wheels 10. For example, as shown exemplary in FIG. 3, it can be expected to effectively inhibit the momentum of the airflow ejected outward from the cooling holes 23 between the plurality of spoke portions 22 of the wheel 10.
On the other hand, for example, the airflow after entering between the brake disc 13 and the wheel 14 is taken in and ejected from the exhaust port 33, or the airflow disturbed by the rotation of the brake disc 13 is ejected from the exhaust port 33. In this case, the airflow ejected from the exhaust port 33 is unlikely to be stable, and moreover, the airflow flowing from the central side of the automobile 1 toward the cooling holes 23 between the plurality of spoke portions 22 of the wheels 10. May be weaker than.
As described above, in the present embodiment, the air flow of the exhaust port 33 formed on the inner surface of the wheel 14 causes the side surface of the automobile 1 from the minute space 16 between the outer circumference of the brake disc 13 and the circumferential rim portion 21. You can weaken or reduce the airflow that flows toward you. The airflow ejected from the exhaust port 33 can effectively prevent the airflow flowing under the floor of the vehicle body 2 from entering between the brake disc 13 and the wheel 14. The airflow ejected from the exhaust port 33 is based on the airflow flowing under the floor as in the airflow of FIG. 3, and is further accelerated by the influence of the centrifugal force following the rotation of the wheel 10, so that the brake disc 13 It is considered that the airflow under the floor trying to enter between the wheel 14 and the wheel 14 is effectively suppressed.
Due to these synergistic effects, in the present embodiment, the airflow ejected from the wheels 10 provided in the wheel house 3 formed on the side surface of the automobile 1 to the outside in the vehicle width direction of the automobile 1 can be effectively reduced. Although the wheel 14 employs a perforated structure in which the ring-shaped rim portion 21 and the hub 12 are connected by the plurality of spoke portions 22, the wheel 14 has a perforated structure, but the wheel 14 has a perforated structure. It is possible to effectively suppress the ejection speed and the flow rate of the outward airflow in the vehicle width direction of the automobile 1.
As a result, in the present embodiment, it becomes difficult for a part of the airflow flowing under the floor of the vehicle body 2 to be ejected outward from the wheels 10, and the airflow along the side surface of the automobile 1 is less likely to be disturbed by such an airflow. The air resistance of the automobile 1 is improved.

[Second Embodiment]
Next, the wheel 10 structure of the automobile 1 according to the second embodiment of the present invention will be described. In the following description, differences from the above-described embodiments will be mainly described. The same reference numerals as those in the above-described embodiment are used for the same components as those in the above-described embodiment, and the description thereof will be omitted.

FIG. 4 is an explanatory diagram of the structure of the wheel 10 according to the second embodiment of the present invention.

In the wheel 10 of FIG. 4, the wheel 14 and the brake disc 13 are attached to the hub 12 in close proximity to each other so that the brake disc 13 is located at the center of the annular rim portion 21 of the wheel 14 in the vehicle width direction. .. The ring-shaped rim portion 21 of the wheel 14 is located outside the outer circumference of the brake disc 13. As described above, a minute space 16 is formed between the outer circumference of the substantially disk-shaped brake disc 13 and the inner surface of the ring-shaped rim portion 21 of the wheel 14 at a very narrow distance. It becomes difficult for the airflow flowing under the vehicle body 2 to enter the space 16.

Further, in the present embodiment, the exhaust port 33 is formed at the center of the ring-shaped rim portion 21 of the wheel 14 in the vehicle width direction. As a result, the exhaust port 33 faces the outer circumference of the brake disc 13. The exhaust port 33 blows airflow toward the brake disc 13.

As described above, in the present embodiment, the brake disc 13 and the wheel 14 are formed on the hub 12 so as to form a minute space 16 between the outer circumference of the brake disc 13 and the ring-shaped rim portion 21 of the wheel 14. Can be taken. As a result, it is possible to reduce the amount of airflow flowing under the floor of the vehicle body 2 entering between the brake disc 13 and the wheel 14.
Moreover, in the present embodiment, the exhaust port 33 faces the outer circumference of the brake disc 13 and ejects an air flow toward the brake disc 13. Therefore, the minute space 16 between the outer circumference of the brake disc 13 and the ring-shaped rim portion 21 of the wheel 14 is blocked by the airflow of the exhaust port 33, and the airflow flowing under the floor of the vehicle body 2 is blocked. Is difficult to flow into the minute space 16 between the outer circumference of the brake disc 13 and the ring-shaped rim portion 21 of the wheel 14 due to the wall created by the airflow of the exhaust port 33.
Due to these synergistic effects, in the present embodiment, the airflow ejected from the wheels 10 provided in the wheel house 3 formed on the side surface of the automobile 1 to the outside in the vehicle width direction of the automobile 1 can be effectively reduced. Although the wheel 14 employs a perforated structure in which the ring-shaped rim portion 21 and the hub 12 are connected by a plurality of spoke portions 22, the cooling holes 23 between the plurality of spoke portions 22 are used. , The ejection speed and the flow rate of the outward airflow in the vehicle width direction of the automobile 1 can be effectively suppressed. As a result, in the present embodiment, it becomes difficult for a part of the airflow flowing under the floor of the vehicle body 2 to be ejected outward from the wheels 10, and the airflow along the side surface of the automobile 1 is less likely to be disturbed by such an airflow. The air resistance of the automobile 1 is improved.

[Third Embodiment]
Next, the wheel 10 structure of the automobile 1 according to the third embodiment of the present invention will be described. In the following description, differences from the above-described embodiments will be mainly described. The same reference numerals as those in the above-described embodiment are used for the same components as those in the above-described embodiment, and the description thereof will be omitted.

FIG. 5 is an explanatory diagram of the structure of the wheel 10 according to the third embodiment of the present invention.

In the wheel 10 of FIG. 5, the wheel 14 and the brake disc 13 are attached to the hub 12 in close proximity to each other so that the brake disc 13 is located at the center of the annular rim portion 21 of the wheel 14 in the vehicle width direction. .. The ring-shaped rim portion 21 of the wheel 14 is located outside the outer circumference of the brake disc 13. As described above, a minute space 16 is formed between the outer circumference of the substantially disk-shaped brake disc 13 and the inner surface of the ring-shaped rim portion 21 of the wheel 14 at a very narrow distance. It becomes difficult for the airflow flowing under the vehicle body 2 to enter the space 16.

Further, in the present embodiment, the exhaust port 33 is formed at a portion inside the ring-shaped rim portion 21 of the wheel 14 in the vehicle width direction. As a result, the exhaust port 33 is formed at a portion inside the brake disc 13 in the vehicle width direction. The exhaust port 33 ejects airflow from the brake disc 13 toward a position inside in the vehicle width direction.

As described above, in the present embodiment, the brake disc 13 and the wheel 14 are formed on the hub 12 so as to form a minute space 16 between the outer circumference of the brake disc 13 and the ring-shaped rim portion 21 of the wheel 14. Can be taken. As a result, it is possible to reduce the amount of airflow flowing under the floor of the vehicle body 2 entering between the brake disc 13 and the wheel 14.
Moreover, in the present embodiment, the exhaust port 33 is formed at a portion inside the vehicle width direction from the brake disc 13, and the airflow is ejected from the brake disc 13 toward the inside position in the vehicle width direction. Therefore, it becomes difficult for the airflow flowing under the floor of the vehicle body 2 to flow into the minute space 16 between the outer circumference of the brake disc 13 and the ring-shaped rim portion 21 of the wheel 14.
Due to these synergistic effects, in the present embodiment, the airflow ejected from the wheels 10 provided in the wheel house 3 formed on the side surface of the automobile 1 to the outside in the vehicle width direction of the automobile 1 can be effectively reduced. Although the wheel 14 employs a perforated structure in which the ring-shaped rim portion 21 and the hub 12 are connected by the plurality of spoke portions 22, the wheel 14 has a perforated structure, but the wheel 14 has a perforated structure. It is possible to effectively suppress the ejection speed and the flow rate of the outward airflow in the vehicle width direction of the automobile 1. As a result, in the present embodiment, it becomes difficult for a part of the airflow flowing under the floor of the vehicle body 2 to be ejected outward from the wheels 10, and the airflow along the side surface of the automobile 1 is less likely to be disturbed by such an airflow. The air resistance of the automobile 1 is improved.

[Fourth Embodiment]
Next, the wheel 10 structure of the automobile 1 according to the fourth embodiment of the present invention will be described. In the following description, differences from the above-described embodiments will be mainly described. The same reference numerals as those in the above-described embodiment are used for the same components as those in the above-described embodiment, and the description thereof will be omitted.

FIG. 6 is an explanatory diagram of the structure of the wheel 10 according to the fourth embodiment of the present invention.
The wheel 10 of FIG. 6 has a bearing member 11, a hub 12, a brake disc 13, a wheel 14, a rubber tire 15, and a hubcap 17.

The wheel cap 17 has a substantially disk shape and is attached so as to cover the outside of the wheel 14. The hubcap 17 covers the entire rim portion 21 from the center portion 20 of the wheel 14. However, the wheel cap 17 has a design hole 41 formed at a position corresponding to the cooling hole 23 formed between the plurality of spoke portions 22. The wheel 14 of the present embodiment has five spoke portions 22. In this case, when a part of the airflow flowing under the floor of the vehicle body 2 flows into the wheel 10, the flowed airflow is ejected outward in the vehicle width direction through the cooling hole 23 of the wheel 14 and the design hole 41 of the wheel cap 17. It will be.

Then, in the present embodiment, the air guide path 32 that communicates the intake port 31 and the exhaust port 33 is formed between the spoke portion 22 and the wheel cap 17 that is overlapped on the outer side thereof. For example, the air conduit 32 may be formed by a concave groove 34 formed at a portion of the wheel cap 17 that overlaps with the spoke portion 22. In this case, the wheel 14 may be formed with a pair of through holes 35, 36 penetrating in the vehicle width direction mainly at a portion overlapping both ends of the concave groove 34 for the spoke portion 22.

In the present embodiment, a part of the airflow flowing under the floor flows from the intake port 31 to the exhaust port 33 through the air guide path 32 formed by overlapping the wheel cap 17 on the outside of the spoke portion 22. The airflow ejected from the exhaust port 33 can weaken or reduce the airflow flowing from the minute space 16 between the outer circumference of the brake disc 13 and the circumferential rim portion 21 toward the side surface of the automobile 1. .. The airflow ejected from the exhaust port 33 can effectively prevent the airflow flowing under the floor of the vehicle body 2 from entering between the brake disc 13 and the wheel 14.

The above embodiments are examples of preferred embodiments of the present invention, but the present invention is not limited thereto, and various modifications or modifications can be made without departing from the gist of the invention. ..

For example, in the above-described embodiment, the intake port 31, the exhaust port 33, and the air conduit 32 are provided in a 1: 1: 1 correspondence.
In addition to this, for example, even if a plurality of air guides 32 and 33 are provided for one intake port 31, a plurality of intake ports 31 and 32 are provided for one exhaust port 33. However, a plurality of intake ports 31 or a plurality of exhaust ports 33 may be provided for one air guide path 32. Further, a plurality of air guide paths 32 may be formed for one spoke portion 22.

FIG. 7 is an explanatory view of the structure of a first modification of the wheel 10 according to the first embodiment of the present invention. In FIG. 7, a plurality of exhaust ports 33 are provided for one intake port 31 and an air guide path 32. Even in this case, by providing each exhaust port 33 on the inner surface of the wheel 14, it is possible to effectively suppress the airflow flowing under the floor from being blown out through the wheel 14 of the wheel 10.

FIG. 8 is an explanatory view of the structure of a second modification of the wheel 10 according to the first embodiment of the present invention. Also in FIG. 8, a plurality of exhaust ports 33 are provided for one intake port 31 and the air guide path 32. However, some of the exhaust ports 33 are provided not at positions in the extending direction of the spoke portions 22, but at positions on the outer peripheral side of the cooling holes 23. In this case, the air guide path 32 may be formed so as to extend along the spoke portion 22 and then curve along the rim portion 21.

FIG. 9 is an explanatory view of the structure of a third modification of the wheel 10 according to the first embodiment of the present invention.
In the wheel 10 of FIG. 9, an outer peripheral rib portion 51 and a central convex portion 52 are formed on the inner surface of the substantially cylindrical hub 12 together with a plurality of intake ports 31.
The outer peripheral rib portion 51 is formed so as to extend the circumferential surface of the substantially cylindrical hub 12 inward.
The central convex portion 52 is formed at the central portion of the inner surface of the hub 12 having a substantially cylindrical shape.
As a result, the outer peripheral rib portion 51 is erected on the inner side surface of the substantially cylindrical hub 12 on the outer side of the plurality of intake ports 31 arranged along the circumferential direction thereof. Further, a central convex portion 52 is erected inside the plurality of intake ports 31. Therefore, the shape of the inner surface of the hub on which the plurality of intake ports 31 are formed is similar to the shape of the inner surface of the wheel 10 and is similar to the shape of the inner surface of the wheel 10. Assuming that a uniform flow is generated under the floor of the vehicle body 2, the airflow that tries to flow into the plurality of intake ports 31 and the airflow that tries to enter between the brake disc 13 and the wheel 14 are rotating wheels. The airflow at 10 or the hub 12 can have similar characteristics under the same action due to the same inner surface shape. For example, the airflow that is about to flow into the intake port 31 located at the rear of the substantially cylindrical hub 12 is subjected to the same action as the airflow that is about to enter between the brake disc 13 and the wheel 14 at the rear of the wheel 10. It can be expected to flow into the air duct 32. By ejecting such an air flow from the exhaust port 33, a suitable suppressing effect can be expected for the air flow that is about to enter between the brake disc 13 and the wheel 14 at the rear portion of the wheel 10. The airflow ejected from the exhaust port 33 can be increased or decreased in a balanced manner with respect to the airflow trying to enter between the brake disc 13 and the wheel 14 while fluctuating according to the traveling state of the automobile 1, and may become excessively excessive. , Can be overly deficient or difficult.

1 ... Automobile (vehicle), 2 ... Body, 3 ... Wheel house, 10 ... Wheel, 12 ... Hub, 13 ... Brake disc, 14 ... Wheel, 16 ... Space, 17 ... Wheel cap, 20 ... Center, 21 ... Rim Part, 22 ... Spoke part, 31 ... Intake port, 32 ... Air conduit, 33 ... Exhaust port, 34 ... Recessed groove, 35 ... Through hole, 41 ... Design hole

Claims (7)

Wheels provided on the left and right sides of the vehicle body in the vehicle width direction.
A hub that is rotatably supported by the vehicle and
A wheel having a ring-shaped rim portion and a plurality of spoke portions for attaching the rim portion to the hub,
The brake disc attached to the hub and
The exhaust port formed on the wheel and
Have,
The brake disc and the wheel are attached to the hub so as to form a space between the brake disc and the ring-shaped rim portion of the wheel.
The exhaust port is formed on the wheel so as to suppress an air flow flowing from the space between the brake disc and the circumferential rim portion toward the side surface of the vehicle.
Vehicle wheel structure.
The brake disc is attached to the hub so that the ring-shaped rim portion of the wheel is located outside the brake disc.
The exhaust port opens to the inner surface of the wheel at a portion outside the brake disc in the vehicle width direction, and blows airflow toward the space between the brake disc and the circumferential rim portion. Formed in
The wheel structure of the vehicle according to claim 1.
The brake disc is attached to the hub so that the ring-shaped rim portion of the wheel is located outside the brake disc.
The exhaust port is formed so as to open to the inner surface of the wheel at a portion facing the brake disc and to eject an air flow toward the brake disc.
The wheel structure of the vehicle according to claim 1.
The brake disc is attached to the hub so that the ring-shaped rim portion of the wheel is located outside the brake disc.
The exhaust port is formed so as to open to the inner surface of the wheel at a portion inside the vehicle width direction from the brake disc and to blow out an air flow toward the inside of the brake disc in the vehicle width direction.
The wheel structure of the vehicle according to claim 1.
It has an air guide that communicates with the exhaust port.
The air guide is formed in the spoke portion of the wheel.
The wheel structure of a vehicle according to any one of claims 1 to 4.
The air guide that communicates with the exhaust port and
A wheel cover that is stacked on the outside of the plurality of spokes of the wheel,
Have,
The air guide is formed by superimposing the wheel cover on the spokes of the wheel.
The wheel structure of a vehicle according to any one of claims 1 to 4.
It has an intake port, which is formed on the inner side surface of the hub, which is the central side of the vehicle in the vehicle width direction.
The exhaust port ejects an air flow taken in from the intake port.
The wheel structure of a vehicle according to any one of claims 1 to 6.

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