JPH0322001Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to improvement of automobile wheels.

[Prior Art] Various types of automobile wheels have been developed in the past.For example, wheels have been developed to reduce weight while maintaining appropriate strength, and to improve the cushioning properties of the tubeless tires attached to the wheels. As described in Japanese Utility Model Application No. 58-164801, in order to improve the A wheel is known in which the rim is connected to the outer peripheral surface of the rim.

[The problem that the idea attempts to solve]

According to the wheel with the above structure, the air sealed in the tubeless tire also fills the hollow interior of the spoke part, increasing the amount of air sealed, making the tire easier to deform, and Although it has the advantage of improving cushioning properties, since the surface area of the spokes is relatively small, it is hardly possible to forcibly dissipate heat generated from the tire to the outside through the spokes. Even when the wheel rotated, it was not possible to actively generate airflow from the back side of the wheel toward the front side in the openings between adjacent spokes, making it difficult to cool the brake mechanism. .

For this reason, a cover body with multiple inclined blades arranged radially on the front or back side of the wheel is separately installed, and the airflow from the back side of the wheel to the front side is caused by the inclined blades that rotate together with the wheel while the wheel is running. However, depending on the shape of the wheel, it may be difficult to attach the cover body, or even if it is attached, a sufficient cooling effect may not be obtained. In some cases, the appearance of the wheel may be damaged, and if it is mounted on the back side, the work requires considerable effort.

Furthermore, in conventional wheels, the valve that injects air into the tubeless tire mounted on the rim is installed on the outer rim of the wheel and exposed to the outside, which makes the overall shape of the wheel less uniform. In addition to being damaged, there was a problem in that dust adhered to the valve, significantly degrading the appearance of the wheel.

The object of the present invention is to provide an automobile wheel that can completely eliminate these problems.

[Means to solve the problem]

In order to achieve the above object, the automobile wheel of the present invention includes a hub portion 5, a plurality of spoke portions 6 protruding radially from the outer periphery of the hub portion 5 in the outer radial direction, and these spoke portions 6. A wheel consisting of a rim R in which the outer end surfaces of the spoke portions 6 are integrally connected to the inner circumferential surface and a tubeless tire is mounted on the outer circumferential surface, and the inside of each spoke portion 6 is connected to the rim R. A circular recess 10 is formed in the hub portion 5.
A valve 15 communicating with the cavity 8 of the arbitrary spoke portion 6 is mounted on the wall surface of the recess 10, and a center cap 16 is removably attached to the circular recess 10 to allow the valve 15 to be inserted from the outside. Further, on the side surface of each spoke portion 6 in the direction of wheel rotation, an inclined fin wall 7 is provided that projects from the front side of the wheel toward the back side as it goes toward the tip. , has a structure in which a ventilation hole S is provided between the tip of each fin wall 7 and the other side surface of the spoke portion 6 adjacent to the tip side.

[Effect]

Since each spoke part 6 of the wheel configured as described above is formed hollow, it is possible to reduce the weight while maintaining a predetermined strength. When filled, the cavities 8 of each spoke portion 6 communicating with the outer peripheral surface of the rim R are also filled with air, increasing the amount of air sealed into the tire and improving the cushioning properties of the tire.

In addition, since the valve 15 is provided in the circular recess 10 formed in the hub portion 5 without protruding from the wheel, it is not subjected to air resistance while driving, and moreover, the valve 15 does not protrude from the wheel. Since the space 10 is covered by the center cap 16, the valve 15 in the recess 10 is covered and the entire wheel has a well-balanced and beautiful appearance, and the valve 15 is prevented from attracting dust or the like. is prevented.

Furthermore, since an inclined fin wall 7 is provided on the side surface of each spoke portion 6 in the wheel rotation direction, the inclined fin wall 7 is inclined from the front side to the back side of the wheel toward the tip. The fin walls 7 force the outside air on the back side of the wheel to be discharged to the front side of the wheel from the ventilation holes S provided between the tip of each fin wall 7 and the spoke parts 6 adjacent to the tip side, and this air flow It is possible to effectively cool down the brake mechanism disposed on the back side, and to efficiently dissipate heat generated from the tire from the spoke portions 6 to the fin walls 7.

Additionally, the inclined fin walls 7 integral with each spoke portion 6 increase the strength of the entire wheel.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. In Figs. 1 to 6, the wheel is integrally cast from a light alloy such as an aluminum alloy, or is integrally molded from a high-strength synthetic resin, and has a so-called one-piece form. A hub portion 5, a plurality of spoke portions 6 (four in the illustrated example) that protrude radially from the outer periphery of the hub portion 5 in the outer radial direction, and the outer end surfaces of these spoke portions 6 are It has a rim R that is integrally connected to the circumferential surface and has a tubeless tire mounted on the outer circumferential surface.

As shown in Fig. 4, the rim R has flange parts 1, 1 formed at both end peripheral edges corresponding to the front and back sides of the wheel, and beat seat parts 3, 3 are connected from these flange parts 1, 1. In addition,
A hump part 2 and a drop part 4 are formed between the beat sheet parts 3, 3.

The plurality of spokes 6 are provided in a portion called a disk portion (D) of the wheel, and extend radially in all directions from the outer periphery of the hub portion 5 provided at the center of the wheel. The rim R
is supported.

Each of these spokes 6 has a rectangular cylindrical cross section with a hollow cavity 7 inside as shown in FIG. 5, or an elliptical cross section as shown in FIG. As shown in FIGS. 3, 4, and 7, it communicates with the outer peripheral surface of the drop portion 4 of the rim R.

Further, each spoke portion 6 is curved in a gentle arc shape in the rotational direction of the wheel as it goes from the hub portion 5 toward the rim R when viewed from the front side of the wheel.

Further, the curved side surface of each spoke portion 6 in the wheel rotation direction is inclined from the front side of the wheel toward the back side as it goes toward the tip, and has a rim radius.
An inclined fin wall 7 is integrally formed and gradually widened toward the hub portion 5, and a ventilation hole S is provided between the tip of each fin wall 7 and the spoke portion 6 adjacent to the tip side thereof. There is.

A circular center hole 11 is formed in the hub portion 5 provided at the center of the wheel, and a circular flange 12 is integrally protruded from the open end of the center hole 11 on the wheel surface side. A circular ring-shaped recess 10 is formed on the outer periphery of the circular flange 12 (see FIGS. 2, 4, 7, and 8).

The groove bottom of the recess 10 of the hub portion 5 has a plurality of bolt mounting holes 1 communicating with the back side of the wheel.
3 are drilled, and the wheel is mounted using a bolt (not shown) that is fixed to an axle (not shown) through this bolt mounting hole 13.

14 is the peripheral wall 9 of the recess 10, as shown in FIG.
As shown in FIG. 8, a valve 15 disposed in a recess 10 is screwed into the valve mounting hole bored at a suitable location so as to communicate with the cavity 8 in any one spoke part 6. be.

Reference numeral 16 denotes a center cap that covers the recess 9, and as shown in FIGS.
It is adapted to be removably locked and fixed in a locking groove provided on the inner circumferential surface of the opening. 18 is its locking claw.

Note that the cap 16 is made of a non-elastic material instead of synthetic resin or soft metal, and its mounting legs 1 are
7 may be removably screwed onto the flange 12, or other attachment means may of course be used.

The wheel constructed in this way is attached to the axle of an automobile by mounting a tubeless tire on its rim R.

Each spoke part 6 is curved in the wheel rotation direction as it goes from the hub part 5 toward the rim R, and the curved surface of the spoke part 6 in the wheel rotation direction is curved as it goes toward the tip. Since this wheel is provided with a fin wall 7 that is inclined from the front side to the back side, this wheel is the first wheel.
When it rotates in the direction indicated by arrow A in the figure, the spoke portion 6 and the inclined fin wall 7 that are curved in the direction of rotation effectively cut the wind on the surface side of the inclined fin wall 7. Therefore, the fin walls 7 that are inclined from the front side to the back side of the wheel allow the outside air on the back side of the wheel to flow through each fin wall 7.
The hot air is forcibly discharged to the front side of the wheel from the ventilation hole S provided between the tip of the tip and the spoke part 6 adjacent to the tip side, and this airflow exhausts the hot air from the back side of the wheel, and the hot air is distributed to the back side of the wheel. The installed brake mechanism is cooled.

Further, heat generated from the tire is transmitted from the spoke portions 6 to the fin walls 7, and is radiated from the large surface of the fin walls 7 together with the cooling effect from the airflow caused by the rotation of the fin walls 7.

Further, since the hollow cavity 8 of each spoke portion 6 communicates with the inside of the tire, the amount of air sealed into the tire increases accordingly, making it easier to deform the tire and improving cushioning performance. It is possible.

[Effect of idea]

As described above, the present invention provides a wheel in which a rim R, a plurality of spoke parts 6, and a hub part 5 are integrally formed, in which the inside of each spoke part 6 is formed into a cavity 8 opening to the outer peripheral surface of the rim R. Since the hollow cavity 8 communicates with the inside of the tubeless tire, it is possible to reduce the weight of the wheel while maintaining a predetermined strength. This increases the amount of air enclosed, making it easier to deform the tire and improving cushioning performance.

Further, since a circular recess 10 is provided in the hub portion 5 and a valve 15 communicating with the cavity 8 of the arbitrary spoke portion 6 is mounted on the wall surface of the recess 10, the hub portion 5 can be mounted on a large diameter rim portion. Unlike conventional valves, the valve 15 is installed in a relatively narrow recess 10, so the installation position of the valve 15 can be easily recognized, facilitating the inflation work. In addition, since the valve 15 is provided in the recess 10, the valve 15 is not subjected to air resistance at all during running, and stable high-speed rotation is possible.

Moreover, since the center cap 16 is detachably attached to the circular recess 10, the recess 10
Since the inner valve 15 is covered and hidden, the entire wheel has a well-balanced and beautiful appearance, and it is also possible to prevent dust and the like from adhering to the valve 15.

Furthermore, each spoke part 6 has an inclined fin wall 7 projecting from the side surface in the wheel rotation direction, which is inclined from the front side to the back side of the wheel toward the tip, so that it is integral with each spoke part 6. Not only does the strength of the entire wheel further increase due to the inclined fin walls 7 of the wheel, but when the wheel rotates, the inclined fin walls 7 direct the outside air on the back side of the wheel to the tips of each fin wall 7 and the spokes adjacent to the tips. The air can be forcibly discharged as airflow from the ventilation hole S provided between the parts 6 to the wheel surface side,
This airflow allows hot air on the rear surface of the wheel to be discharged to the outside, thereby effectively cooling the brake mechanism disposed on the rear surface of the wheel.

Furthermore, the heat generated by the tire during running can be dissipated from the spoke portions 6 by the fin walls 7 having a large surface area, and the heat can be actively dissipated by the airflow generated by the rotation of the fin walls 7. This allows for even more effective cooling.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention: Fig. 1 is a front view thereof, Fig. 2 is a front view with the center cap removed, Fig. 3 is an enlarged side view of Fig. 1, and Fig. 4 is an enlarged side view of Fig. 1. Fig. 1 is an enlarged sectional view taken along the line X-X, Fig. 5 is an enlarged sectional view taken along the Y-Y line, and Fig. 6 is an enlarged sectional view taken along the line
The figure is a sectional view of a modified example corresponding to FIG. 5, FIG. 7 is a reduced sectional view taken along the Z-Z line in FIG. 3, and FIG. 8 is an enlarged vertical sectional side view of a portion showing the valve installed state. 5... Hub part, 6... Spoke part, 7... Inclined fin wall, 8... Cavity, 10... Recess, 15...
Valve, 16...center cap, R...rim, S...ventilation hole.

Claims (1)

[Scope of utility model registration request] A hub portion 5, a plurality of spoke portions 6 protruding radially from the outer periphery of the hub portion 5 in the outer radial direction, and outer end surfaces of these spoke portions 6 are integrally connected to the inner circumferential surface. A wheel consisting of a rim R having a tubeless tire mounted on the outer circumferential surface thereof, the inside of each spoke portion 6 being formed into a cavity 8 opening to the outer circumferential surface of the rim R, A circular recess 10 is provided in the hub portion 5, a valve 15 communicating with the cavity 8 of the arbitrary spoke portion 6 is mounted on the wall surface of the recess 10, and a center cap 16 can be freely attached to and removed from the circular recess 10. The valve 15 is covered with the valve 15 so that it cannot be seen from the outside, and the spoke part 6 is further provided with an inclined fin on the side surface in the direction of wheel rotation, which is inclined from the front side to the back side of the wheel as it goes toward the tip. In addition to protruding walls 7, each fin wall 7
An automobile wheel characterized in that a ventilation hole S is provided between the tip of the spoke part 6 and the other side surface of the spoke part 6 adjacent to the tip side.