JPS59124402A - Wheel for motorcycle - Google Patents

Abstract

PURPOSE:To facilitate casting work and reduce the weight of a wheel by installing a wheel bearing through a disc brake fitted onto the both side surfaces of an inner wheel. CONSTITUTION:A disc brake 3 is fixed onto the both side surfaces 17 of an inner wheel 13 by a fixing tool, and the center of the brake disc 3 is accorded with the center of a body 1, and a bearing 2 is installed into a center hole. Said bearing 2 is constituted of a bearing outer shaft installation hole 14 and a collar 15. Therefore, a large cavity 16 is formed in the center part of the body 1, and a thick part for connecting the bearing 2 and a spoke 12 can be removed, and the strength of the wheel can be increased.

Description

[Detailed description of the invention] The present invention relates to a wheel having characteristics.

In recent years, motorcycle wheels have been produced in which the rim and disc (spokes and hub parts are integrated) are integrally cast, or the rim and disc are processed separately, and then the phosphorus source is attached to the cooling source. Cobies that are fitted and fastened together are often used.

However, in addition to integrally cast wheels, even in two-piece wheels where the rim and disc are fitted and fixed, the disc is cast, and the shape suitable for casting, especially the wall thickness of each part, etc. be restricted. 'In order to integrally cast a wheel or disc, the shrinkage rate due to cooling must first be taken into consideration, and the dimensions of the knob, spokes, and rim must be of a size that can be cast, not only in terms of strength but also in terms of casting technology. Instead, it naturally becomes a thick and heavy wheel.

In other words, if the wall thickness is made thinner, the tip will solidify before the hot water has flowed into the entire specially made product, or the narrow part will be destroyed or deformed depending on the flow rate of the hot water, resulting in a cast product with a predetermined shape. Often there isn't. Therefore, the inlet has a particularly thick wall and requires a cross-sectional area greater than the required strength. Furthermore, wheel molds are particularly complex, especially in the hub section, which, together with the problem of the wall thickness of each part mentioned above, poses another problem in the casting process.
Sometimes nests may form inside.

For this reason, in order to reduce the weight of the wheel itself and prevent the formation of cavities, the rim and disc are processed separately and then fitted and fastened together, which can solve some of the above problems in the casting process. Not enough.

Figures 1 and 2 show a conventionally used cast wheel equipped with a brake disc, but the hub, which is the bearing part that is cast, is extremely large, and its weight and strength exceed the required strength. It also goes against the desire to reduce the weight of wheels, such as the cross-sectional area.

The present invention is aimed at facilitating the casting process and reducing the weight of the wheel, in which a separately machined bearing portion is attached to the main body via a brake disc.

Hereinafter, the embodiment 13 according to the present invention will be explained in detail based on the drawings.

The wheel according to the present invention is composed of a main body (1), a bearing (brake), and a brake disc (3), and the main body (1) has a rift (3) fixed with a fastener such as a bolt. .

The center of the brake disc (3) is aligned with the center of the main body (1), and the bearing (4) is attached to the hole provided in the center. ) is aligned with the central axis of

The bearing (bearing), like a general bearing, has a hole (hole and flange) in which the outer ring of the bearing can be inserted and fixed, and is mounted symmetrically with respect to the cross-sectional main shaft 2-2.

Therefore, the central part of the main body (1) itself, that is, the part corresponding to the hub of a conventional wheel, is a large cavity (/j) 11-
This eliminates the need for a large thick part connecting the bearing (rod part and spokes (/2)).

In other words, the wheel is designed so that the wheel alone can satisfy the specified strength, and installing brake discs on both sides (circle) 1 of the wheel increases the strength accordingly. If you think about it from the perspective of the strength of the wheels, it can be considered excessive quality. The brake disc (3) is a large disc with considerable thickness, so →
As shown in Fig. 3, the brake disc (3) can be used not only as a brake but also as a strength member of a wheel, and the combined stress of the axle load and the torque due to the braking action is generated on the brake disc (3). It is also possible to withstand it.

In addition, Fig. 3 shows a case in which the main body (1) is formed by integrally casting the rim (l/), the spokes (/2), and the inner ring (/3). The inner ring (/3) may be separately processed and fitted and fixed using a phosphorus source.
It is also possible to integrate them after separate processing. Therefore, the main body (1) processed by casting has a side surface (/7
) is machined, and the brake disc (3) is installed.
Furthermore, a bearing (4) is attached to a hole drilled in the center of the brake disc (3).

As described above, in the wheel according to the present invention, a part of the bearing of the wheel is attached to the brake disc (3) fixed to the side surface (/7).
It is installed through the inner ring (/3) and the bearing (,
Since the space between 21 and 21 is a large cavity (/6), the weight is significantly reduced compared to conventional wheels, and the weight reduction of the wheel can be greatly improved, yet there are no problems in terms of strength.

The brake disc 0) is not only used as a mere brake, but also acts as a strength member that bears the axle load when the brakes are not in operation, and from this point of view as well, the weight is reduced.

In addition, compared to the case where the hub is integrally cast, the inner ring (13)
It is only necessary to cast the outer periphery of the yosho, and sometimes the rim (/l) part may also be excluded, so the flow of the hot water is very good9.
The generation of nests inside is eliminated, and the spokes (12) can be designed to their limits in terms of strength, strength, and design compared to conventional spokes.

Furthermore, since the main body (1), the brake disc (3), and the bearing part are each made up of independent parts, the wheel is flexible enough to accommodate some design changes.

[Brief explanation of the drawing]

Figures 1 and 2 show conventionally used wheels;
The figure shows a central sectional view of a wheel according to the invention. (1)...Body)...Bearing (3
)...Brake disc (//)...Rim (12)...Sport>(
/3)...Inner ring (/4t)...Hole (/j)
...Brim (16)...Hollow (/7)...
Side Patent Applicant Daido Kogyo Co., Ltd. Agent Osamu Hirasaki Figure 1 Figure 2 1 Figure 3 7-

Claims (1)

[Claims] A wheel for a motorcycle characterized in that a bearing is mounted via a brake disc (3) attached to both sides (/7) of an inner ring (/3).