JPS58191603A - Wheel for vehicle - Google Patents

Abstract

PURPOSE:To achieve a lighter weight, a simple construction and lower manufacturing costs by molding parts all but the bearing section with a fiber-reinforced resin. CONSTITUTION:A wheel body 4 is built up integral of a rim section 1, a spoke section 2 and a hub section 3 with a fiber-reinforced resin. This wheel body is such that puts together split halves 4a and 4b in which the rim section 1 and the spoke section 2 are divided in symmetry at the right angle to the direction of the wheels. A cylinder body 11 made of the fiber-reinforced resin is bonded on the inner surface of the hub section 3 of the wheel body 4 in the form of integral joining the split halves 4a and 4b. A bearing is pressed fit at the right and left ends of the hub section 3 or bearing sections 12 and 13 made of a lightweight alloy are bonded there for mounting of a disc plate and tightened together with the cylinder body 11 by a bolt 14, a nut 15 or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheel for a small vehicle such as a motorcycle or a tricycle.

When using lightweight wheels in the above-mentioned small vehicles, it is desirable to use lightweight fiber-reinforced resin to the maximum extent possible to reduce weight.

The present invention was developed to meet these demands, and consists of integrally forming the rim part, spoke parts, and hub part excluding the bearing part with fiber-reinforced resin, and sliding parts such as the bearing part are made of metal. It is characterized by being made of.

To explain one embodiment shown below, a wheel body 4 made of fiber-reinforced resin in which a rim portion 1, spoke portions 2, and knob portions 3 are integrally formed has a rim portion 1, a spoke portion 2, and a knob portion 3.
Half bodies 4a and 4b, which are divided into symmetrical shapes perpendicular to the axle direction, are joined and integrated. The inner periphery of the rim portion and the spoke portions 20 of this half body 4 a + 4 b
Joining flanges 5a and 5b extend on both sides,
The adhesive surfaces of the joining flanges 5 a and 5'b are brought together and joined with an adhesive, and the flange parts sa,
, -s b are furthermore firmly connected by mechanical fixing means such as bolts 6 and nuts 7 or rivets. After this bonding, the wheel body 4 is wrapped with reinforcing fibers impregnated with resin using the filament winding method. When joining the half bodies 4a and 4be, an ellipse R8 formed in advance with fiber reinforced resin is attached to the rim. It is adhesively bonded to the outer circumferential surface of the portion 1 to improve the bonding strength of the half bodies 4a, 4b and the annular rigidity of the wheel. If the ring 8 is provided on a part of the outer peripheral surface of the rim, the effect of preventing air leakage from the joint when a tubeless tire is used is increased.

The shape of the spoke portion 2 is U-shaped in cross section in the state of the half-split bodies 4a and 4b, and flanges 5a+ are attached to both edges of the spoke portion 2.
5b are respectively formed, and a half/split body 4a.

When 4b is joined, it becomes a hollow square shape as shown in Figure 3,
In addition, the wheel is formed so that it gradually becomes thicker in the direction toward the center of the wheel, and the thickness of the connected parts 9 and 10 of the spoke part 2, rim part 1, and hub part 3 is made υ thicker than other parts, thereby increasing the strength of the wheel. Rigidity can be significantly increased.

A cylindrical body 11 made of fiber-reinforced resin is adhesively bonded to the inner periphery of the knob portion 3 of the wheel body 40 which is formed by joining the half bodies 4a + 4b.

In order to mount Sidisk plates with press-fit bearings on both left and right ends of the hub section 3, bearing sections 12 and 13 made of light alloy such as SMC, Al, Mg, etc. are adhesively bonded together, and together with the cylindrical body 11, bolts 14 and nuts 15 are attached. Alternatively, they are fastened together using rivets or the like.

The fiber-reinforced resin used in the present invention includes matrix such as epoxy resin, polyester resin, phenol resin, etc., carbon fiber, aromatic polyamide fiber,
Glass fiber, silicon car (3) A material reinforced with filaments such as bite fiber, boron fiber, aluminum fiber, etc.
a, 4b, the cylindrical body 11, etc. are formed by a mated die method, a hand lay-up method, a filament winding method, or the like.

In the above embodiment, the wheel was assembled by integrally joining the half bodies 4a and 4b, but the present invention is not limited to this, and it goes without saying that the wheel may be integrally molded.

As described above, in the present invention, the other parts except the bearing part are molded with fiber-reinforced resin, so it is possible to reduce the weight by 30 to +θ% compared to an aluminum wheel of the same shape, and by AO-gθ compared to a steel wheel. This reduces fuel consumption and improves various functions of the vehicle, as the rim, spokes, and hub are integrally molded (5) (4) The number of parts to be joined is reduced, making it easy to Afterwards, there is no need for finishing processing like that required for light alloy wheels, so production costs can be reduced, and by using fiber-reinforced resin, there is a greater degree of freedom in design.Furthermore, by making the bearing part metal, only fiber-reinforced resin can be used. Compared to configuring a hub, the shape of the tung fat part can be simplified, and productivity is improved.

[Brief explanation of drawings]

7 is a front view of the wheel of the present invention, FIG. 1 is a cross-sectional view taken along the line ■-■ in FIG. 7, and FIG. 3 is a cross-sectional view taken along the line ■-■ in FIG. 1 is a rim part, 2 is a spoke part, 3 is a hub part, 4 is a wheel body, 4a, 4b are half bodies, sa, sb are 7 flange for joining, 8 is a ring, 11 is a cylindrical body, 12.13 is the bearing part. l 6) Kishi 3 Prisoner/n Ya 2 Kyo 11-

Claims (1)

[Claims] 1. A vehicle wheel characterized in that a rim portion, spoke portions, and a hub portion excluding left and right bearing portions are integrally formed of fiber-reinforced resin.