JP2006123869A - Disc wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED To suppress adhesion of brake dust to a wheel with a simple configuration.
In a disc wheel that is disposed outside a vehicle of a brake and rotates in a forward rotation direction when the vehicle moves forward, a plurality of support portions connect a disc portion to which a tire is attached and a rim that attaches the disc wheel to the vehicle. The surface on the forward rotation direction side of the support portion is formed by an inclined surface that inclines in the reverse rotation direction that is the reverse direction of the normal rotation direction as it proceeds from the vehicle outer side to the vehicle side. The inclination of the inclined surface increases in the reverse direction as it proceeds from the outside of the vehicle to the vehicle side. The surface on the reverse direction side of the support portion is formed by an inclined surface that inclines in the normal rotation direction as it proceeds from the vehicle outer side to the vehicle side.
[Selection] Figure 3

Description

  The present invention relates to a vehicle wheel, for example, a technique for suppressing adhesion of brake dust to a wheel.

In general, the brake of the vehicle is disposed in the vicinity of the disc wheel and inside the disc wheel. For this reason, when brake dust, which is wear powder such as brake pads, is released from the brake to the surrounding air, it passes around between the spokes and wraps around the disc wheel, and thus easily adheres to the external portion of the disc wheel. Thus, when brake dust adheres to the external part of a disc wheel, a disc wheel will darken and the external appearance of a vehicle will be impaired. In particular, in the case of a disc brake, the disc rotor and brake pads are not hermetically sealed, so that brake dust is released directly into the surrounding air when braking by pressing the brake pads against the disc rotor. For this reason, for example, Patent Document 1 relates to a disc wheel in which a plurality of radial ribs reaching the rim portion from the hub are formed inside the disc wheel, and the ribs are inclined in a direction in which air is easily sucked from the opening. Technology has been proposed. Patent Document 2 proposes a technique related to a brake dust adhesion preventing rotor having a plurality of openings that allow the air inside the wheel to flow into the wheel side as the tire rotates. Patent Document 3 proposes a technique related to an automobile wheel in which a torsion of the wheel with respect to the equator line is applied to a spoke portion.
Japanese Utility Model Publication No. 62-65303 Utility Model Registration No. 3049735 Japanese Utility Model Publication No. 61-174303

  Since the brake is installed inside the vehicle around the wheel, the technology related to the shape of the wheel, etc. considering the air flow between the brake and the outside of the vehicle in order to suppress the dirt of the wheel due to brake dust from the brake and to cool the brake Has been proposed. However, in these proposed technologies, it is necessary to take a complicated structure in order to form an air flow between the brake and the outside of the vehicle, such as providing a member separate from the wheel or attaching a rib to the wheel. .

  Therefore, the present invention has been made in view of the above-described circumstances, and an object thereof is to suppress the adhesion of brake dust to a wheel with a simple configuration.

  In order to solve the above-mentioned problems, a disc wheel according to an aspect of the present invention includes a plurality of supports that connect a rim to which a tire is attached and an attachment portion that attaches the disc wheel to the vehicle. Part. The surface of the support portion on the forward rotation direction side, which is the rotation direction of the disc wheel when the vehicle is moving forward, is formed by an inclined surface that inclines in the reverse rotation direction that is the reverse direction of the forward rotation direction as it advances from the vehicle outer side to the vehicle side. Is done. According to this aspect, the air outside the vehicle of the disc wheel can be taken into the vehicle, and the brake dust released from the brake can be prevented from entering the design surface.

  The inclined surface may increase in inclination in the reverse rotation direction as it proceeds from the vehicle outer side to the vehicle side. According to this aspect, it is possible to increase the air flow velocity on the vehicle side of the disc wheel, and to suppress the brake dust released from the brake from entering the design surface.

  The surface on the reverse direction side of the support portion may be formed by an inclined surface that inclines in the normal rotation direction as it proceeds from the vehicle outer side to the vehicle side. According to this aspect, the air outside the disc wheel can be taken into the vehicle side even under the disc wheel, and the brake dust released from the brake can be prevented from entering the design surface.

  The surface on the reverse direction side of the support portion may be formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outer side to the vehicle side. According to this aspect, more air on the vehicle outer side of the disc wheel can be taken into the vehicle side, and brake dust released from the brake can be prevented from entering the design surface.

  The vehicle outer surface of the support portion may be formed by an inclined surface that inclines from the vehicle side toward the vehicle outer side in the forward rotation direction. According to this aspect, more air on the vehicle outer side of the disc wheel can be taken into the vehicle side, and brake dust released from the brake can be prevented from entering the design surface.

  According to the present invention, it is possible to suppress the adhesion of brake dust to the wheel with a simple configuration.

  Hereinafter, embodiments of the present invention (hereinafter referred to as “embodiments”) will be described with reference to the drawings.

(First embodiment)
FIG. 1 is an external view of a wheel 10 according to the first embodiment viewed from the outside of a vehicle. The wheel 10 is attached to a vehicle (not shown), and when the vehicle moves forward, in the present embodiment, the wheel 10 rotates in the direction indicated by the arrow in FIG. The reverse direction will be described below.

  The wheel 10 includes a disc wheel 12 and a tire 14, and the tire 14 is attached to the outer peripheral portion of the rim 18 of the disc wheel 12. The disc wheel 12 has a fastening hole (not shown), and the disc portion 20 which is a mounting portion for attaching the disc wheel 12 to the vehicle is fastened to the vehicle-side hub 60 by a hub bolt and a hub nut (not shown) so that the disc wheel 12 can rotate. It is attached. The rim 18 and the disk portion 20 are connected and fixed by a plurality of spokes 16, and a gap portion 22 is formed between the plurality of spokes 16.

  FIG. 2 is a cross-sectional view of the disc wheel 12 according to the first embodiment. This figure is a cross-sectional view at a location including the spokes 16, wherein the left side of the figure is the vehicle side and the right side is the vehicle outside. The disc wheel 12 is formed by casting or forging from a material such as aluminum. The rim 18 has a cylindrical shape extending from the vehicle side toward the vehicle outer side for attaching a tire, and flange portions for supporting the tire are formed at both ends of the rim. The disk portion 20 is flat on the vehicle side in order to be fixed to the hub 60. The spoke 16 connects and fixes the disk portion 20 and the vehicle outer end portion of the rim 18.

  The spoke 16 has a design surface 16a that forms the appearance of the disc wheel 12 on the outside of the vehicle, and a back surface 16b on the vehicle side. In this embodiment, the spoke 16 is formed with a curved surface in consideration of the appearance from the outside of the vehicle.

  A brake 50 is disposed on the vehicle side of the disc wheel 12. The brake 50 is of a disc brake type, and includes a disc rotor 52, a brake pad 56, a caliper 54, and the like. The brake 50 is disposed so as to be substantially accommodated in the cylindrical rim 18 in order to effectively utilize the space on the vehicle side. The disk rotor 52 is fixed to the hub 60 in order to transmit the braking force to the disk wheel 12, and the disk wheel 12 is also fixed to the hub 60.

  In the brake 50, the brake pad 56 having the piston on the vehicle side is pressed against the disc rotor 52 by hydraulic pressure, and the brake pad 56 on the outside of the vehicle is also pressed against the disc rotor 52 through the caliper 54. Be held by. In this embodiment, the disc wheel 12 is given a braking force by being held by the brake pad 56 above the inside of the disc wheel 12.

  The disk rotor 52 is formed of cast iron having high hardness in order to reduce wear. There are metals, non-asbestos, ceramics, carbon, etc. as materials for forming the brake pad 56 that holds the disc rotor 52. Which material is used is selected in consideration of the respective characteristics. The The brake pad 56 is formed of a material having a hardness lower than that of the disk rotor 52 in order to reduce wear of the disk rotor 52. Therefore, the brake pad 56 is worn by holding the disk rotor 52 and braking it. To do. The wear powder such as the brake pads 56 is released as brake dust to the air around the brake.

  FIG. 3 is a view showing the spoke 16 according to the first embodiment, (a) is a view showing the shape of the spoke 16 according to the first embodiment, and (b) is a view showing the shape of the first embodiment. It is a figure which shows the relationship between the shape of this spoke 16, and its surrounding airflow.

  As shown to (a), the spoke 16 has the design surface 16a formed in the vehicle outer side, the back surface 16b formed in the vehicle side, the front surface 16c formed in the normal rotation direction side of the disc wheel 12, and the reverse rotation direction side. It is formed by the back surface 16d formed in this. The design surface 16 a is formed by a surface whose cross section is perpendicular to the rotation axis of the disc wheel 12. The back surface 16b is formed in parallel with the design surface 16a. The front surface 16c is formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outside to the vehicle side, and the inclined surface is formed so that the inclination increases in the reverse direction as it advances from the vehicle outside to the vehicle side. ing. The rear surface 16d is formed by an inclined surface that inclines in the forward direction as it advances from the vehicle outer side to the vehicle side, and the inclined surface increases in inclination in the forward direction as it advances from the outer side of the vehicle to the vehicle side. Is formed.

  (B) is the figure which looked at the upper cross section of the wheel of the vehicle right side during driving | running | working from the top, and represents the relationship with the airflow in this case. A space 22 is disposed between the plurality of spokes 16. On the vehicle outer side on the right side of the figure and the vehicle side on the left side, an air flow in the direction of the arrow is formed as the vehicle runs. Since this figure is above the disc wheel 12, when the disc wheel 12 rotates, the spokes 16 move downward in this figure, opposite to the air flow. Therefore, the speed difference between the spokes 16 and the airflow around them is very large above the disc wheel 12.

  Air around the vehicle outer side of the disc wheel 12 is taken into a gap 22 provided between the spokes 16. The air that has entered the gap portion 22 strikes the front surface 16 c of the spoke 16. Since the front surface 16c of the spoke 16 is inclined in the reverse direction as it advances from the vehicle outer side to the vehicle side, the air hitting the front surface 16c of the spoke 16 is drawn around to the vehicle side. As a result, the air flow from the outside of the vehicle to the vehicle side is formed by using the surfaces constituting the spokes 16, and the brake dust released from the brake 50 passes around the design surface of the disc wheel 12 through the gap 22. Can be suppressed.

  In general, the brake 50 is disposed above the inside of the disc wheel 12. However, since the speed difference between the spokes 16 and the airflow in the vicinity thereof is very large above the disc wheel 12, this embodiment. Due to the shape of the spokes 16, a strong air flow is formed around the brake pad 56 from the outside of the vehicle to the vehicle side. For this reason, it is possible to effectively prevent the brake dust from entering the design surface of the disc wheel 12. Further, since the rear surface 16d of the spoke 16 is also formed by an inclined surface that inclines in the forward rotation direction from the vehicle outer side toward the vehicle side, the disc wheel 12 according to the present embodiment is used in the left and right wheels of the vehicle. Can be used in common.

  Although not shown, below the disc wheel 12, the air around the outside of the vehicle of the disc wheel 12 enters the gap 22 provided between the spokes 16 and hits the rear surface 16 d of the spoke 16. Since the rear surface 16d of the spoke 16 is also formed by an inclined surface that inclines in the forward rotation direction as it advances from the vehicle outer side to the vehicle side, the air hitting the rear surface 16d of the spoke 16 is routed to the vehicle side. Is done. As a result, an air flow from the outside of the vehicle to the vehicle side is also formed below the disc wheel 12.

(Second Embodiment)
FIG. 4 is a view showing the spoke 16 according to the second embodiment, (a) is a view showing the shape of the spoke 16 according to the second embodiment, and (b) is a view showing the shape of the second embodiment. It is a figure which shows the relationship between the shape of this spoke 16, and its surrounding airflow. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown to (a), the design surface 16a is formed by the surface perpendicular | vertical to the rotating shaft of the disc wheel 12. As shown in FIG. The back surface 16b is formed in parallel with the design surface 16a. The front surface 16c is formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outside to the vehicle side, and the inclined surface is formed so that the inclination increases in the reverse direction as it advances from the vehicle outside to the vehicle side. ing. The rear surface 16d is formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outside to the vehicle side, and the inclined surface is formed so that the inclination increases in the reverse direction as it advances from the vehicle side to the vehicle outside. ing.

  (B) is the figure which looked at the upper cross section of the wheel of the vehicle right side in driving | running | working concerning this embodiment from the top, and represents the relationship with the airflow in this case. Air around the vehicle outer side of the disc wheel 12 is taken into a gap 22 provided between the spokes 16. At this time, the rear surface 16d of the spoke 16 is formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outer side to the vehicle side, so that more air can be taken into the gap 22 from the vehicle outer side. it can.

  The air that has entered the gap portion 22 strikes the front surface 16 c of the spoke 16. Since the front surface 16c of the spoke 16 is inclined in the reverse direction as it advances from the vehicle outer side to the vehicle side, the air hitting the front surface 16c of the spoke 16 is drawn around to the vehicle side. As a result, a stronger air flow is formed from the outside of the vehicle to the vehicle side by using the surfaces constituting the spokes 16, so that brake dust released from the brake 50 passes through the gap portion 22 to the design surface of the disc wheel 12. It is possible to suppress wraparound.

(Third embodiment)
FIG. 5 is a view showing the spoke 16 according to the third embodiment, (a) is a view showing the shape of the spoke 16 according to the third embodiment, and (b) is a view showing the shape of the third embodiment. It is a figure which shows the relationship between the shape of this spoke 16, and its surrounding airflow. In the present embodiment, the same parts as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown to (a), the design surface 16a is formed of the inclined surface which inclines from the vehicle side to the vehicle outer side as it progresses in the normal rotation direction. The back surface 16b is formed in parallel with the design surface 16a. The front surface 16c is formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outside to the vehicle side, and the inclined surface is formed so that the inclination increases in the reverse direction as it advances from the vehicle outside to the vehicle side. ing. The rear surface 16d is formed by an inclined surface that inclines in the forward direction as it advances from the vehicle outer side to the vehicle side, and the inclined surface increases in inclination in the forward direction as it advances from the outer side of the vehicle to the vehicle side. Is formed.

  (B) is the figure which looked at the upper cross section of the wheel of the vehicle right side in driving | running | working concerning this embodiment from the top, and represents the relationship with the airflow in this case. Air around the vehicle outer side of the disc wheel 12 is taken into a gap 22 provided between the spokes 16. At this time, the design surface 16a of the spoke 16 is formed by an inclined surface that inclines from the vehicle side toward the vehicle outer side as it advances in the forward rotation direction, so that more air is taken into the gap 22 from the vehicle outer side. Can do.

  The air that has entered the gap portion 22 strikes the front surface 16 c of the spoke 16. Since the front surface 16c of the spoke 16 is inclined in the reverse direction as it advances from the vehicle outer side to the vehicle side, the air hitting the front surface 16c of the spoke 16 is drawn around to the vehicle side. As a result, a stronger air flow is formed from the outside of the vehicle to the vehicle side by using the surfaces constituting the spokes 16, so that the brake dust released from the brake 50 passes through the gap portion 22 on the design surface of the disc wheel 12. It is possible to suppress wraparound.

(Fourth embodiment)
FIG. 6 is a view showing a spoke 16 according to the fourth embodiment, (a) is a view showing a shape of the spoke 16 according to the fourth embodiment, and (b) is a view showing the shape of the fourth embodiment. It is a figure which shows the relationship between the shape of this spoke 16, and its surrounding airflow. In the present embodiment, the same parts as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

    FIG. 4 is a view showing the spoke 16 according to the second embodiment, (a) is a view showing the shape of the spoke 16 according to the second embodiment, and (b) is a view showing the shape of the second embodiment. It is a figure which shows the relationship between the shape of this spoke 16, and its surrounding airflow. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown to (a), the design surface 16a is formed by the surface perpendicular | vertical to the rotating shaft of the disc wheel 12. As shown in FIG. The back surface 16b is formed in parallel with the design surface 16a. The front surface 16c is formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outside to the vehicle side, and the inclined surface is formed so that the inclination increases in the reverse direction as it advances from the vehicle outside to the vehicle side. ing. The rear surface 16d is formed by an inclined surface that inclines in the reverse direction as it advances from the vehicle outside to the vehicle side, and the inclined surface is formed so that the inclination increases in the reverse direction as it advances from the vehicle outside to the vehicle side. ing.

  (B) is the figure which looked at the upper cross section of the wheel of the vehicle right side in driving | running | working concerning this embodiment from the top, and represents the relationship with the airflow in this case. Air around the vehicle outer side of the disc wheel 12 is taken into a gap 22 provided between the spokes 16. At this time, the design surface 16a of the spoke 16 is formed by an inclined surface that inclines from the vehicle side to the vehicle outer side as it advances in the forward rotation direction, and the rear surface 16d of the spoke 16 advances from the vehicle outer side to the vehicle side. Accordingly, a larger amount of air can be taken into the gap portion 22 from the outside of the vehicle.

  The air that has entered the gap portion 22 strikes the front surface 16 c of the spoke 16. Since the front surface 16c of the spoke 16 is inclined in the reverse direction as it advances from the vehicle outer side to the vehicle side, the air hitting the front surface 16c of the spoke 16 is drawn around to the vehicle side. As a result, a stronger air flow is formed from the outside of the vehicle to the vehicle side by using the surfaces constituting the spokes 16, so that the brake dust released from the brake 50 passes through the gap portion 22 on the design surface of the disc wheel 12. It is possible to suppress wraparound.

  The present invention is not limited to the above-described embodiments, and an appropriate combination of the elements of each embodiment is also effective as an embodiment of the present invention. Various modifications such as design changes can be added to each embodiment based on the knowledge of those skilled in the art, and embodiments to which such modifications are added can also be included in the scope of the present invention. Here are some examples.

  A duct may be provided in the vehicle for further discharging air taken into the vehicle side from the outside of the vehicle to the outside of the vehicle. Thereby, it can suppress that brake dust wraps around to other parts on the vehicle side by taking in air to the vehicle side.

  The brake 50 may be a drum brake instead of a disc brake. Thereby, it is possible to suppress the brake dust from entering the design surface of the disc wheel 12 while using a drum brake having a good braking force.

It is the external view seen from the vehicle outside of the wheel concerning a 1st embodiment. It is sectional drawing of the disc wheel concerning 1st Embodiment. It is a figure which shows the spoke concerning 1st Embodiment, (a) is a figure which shows the shape of the spoke concerning 1st Embodiment, (b) is the shape of the spoke concerning 1st Embodiment, and its It is a figure which shows the relationship of the surrounding airflow. It is a figure which shows the spoke concerning 2nd Embodiment, (a) is a figure which shows the shape of the spoke concerning 2nd Embodiment, (b) is the shape of the spoke concerning 2nd Embodiment, and its It is a figure which shows the relationship of the surrounding airflow. It is a figure which shows the spoke concerning 3rd Embodiment, (a) is a figure which shows the shape of the spoke concerning 3rd Embodiment, (b) is the shape of the spoke concerning 3rd Embodiment, and its It is a figure which shows the relationship of the surrounding airflow. It is a figure which shows the spoke concerning 4th Embodiment, (a) is a figure which shows the shape of the spoke concerning 4th Embodiment, (b) is the shape of the spoke concerning 4th Embodiment, and its It is a figure which shows the relationship of the surrounding airflow.

Explanation of symbols

  10 wheels, 12 disc wheels, 14 tires, 16 spokes, 16a design surface, 16b back surface, 16c front surface, 16d rear surface, 18 rims, 20 disc portions, 22 gap portions, 50 brakes, 52 disc rotors, 54 calipers, 56 Brake pads, 60 hubs.

Claims (5)

In the disc wheel disposed outside the vehicle of the brake,
A plurality of support portions connecting a rim to which a tire is mounted and a mounting portion for mounting the disc wheel to the vehicle;
The surface of the support portion on the forward rotation direction side that is the rotation direction of the disc wheel when the vehicle moves forward is an inclined surface that inclines in the reverse rotation direction that is the reverse direction of the forward rotation direction as it proceeds from the vehicle outer side to the vehicle side A disc wheel formed by the method described above.   The disc wheel according to claim 1, wherein the inclined surface increases in inclination in the reverse rotation direction as it proceeds from the vehicle outer side to the vehicle side.   3. The disk wheel according to claim 1, wherein the surface of the support portion on the reverse rotation direction side is formed by an inclined surface that is inclined in the normal rotation direction as it proceeds from the vehicle outer side to the vehicle side.   3. The disk wheel according to claim 1, wherein the surface of the support portion on the reverse rotation direction side is formed by an inclined surface that is inclined in the reverse rotation direction as it proceeds from the vehicle outer side to the vehicle side.   5. The disc wheel according to claim 1, wherein a surface of the support portion on the vehicle outer side is formed by an inclined surface that is inclined from the vehicle side toward the vehicle outer side as it proceeds in the forward rotation direction.

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