JPS59167367A - Steering wheel - Google Patents

Abstract

PURPOSE:To make a steering wheel light and increase its strength and then prevent vibration at running by protruding an arm made of steel from a boss made of steel and winding reinforced fiber round the arm up to the root. CONSTITUTION:An arm made of carbon steel is protruded in the direction of a spoke 2 from a boss 3 made of carbon steel and is integratedly formed with a core material 9 made of the foam material of the spoke 2. A reinforcement by the winding and tighting of the arm 10 and unidirectional reinforced fiber 8 is formed by winding the unidirectional reinforced fiber 8 such as carbon fiber or glass fiber round the outside of the core material 9 in the longer direction and in an orientation with an inclination of 45 deg.. The unidirectional reinforced fiber 12 made of aramide fiber that prevents cracks is wound round the end 11 of the unidirectional reinforced fiber 8 in the circumferential direction of the spoke.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steering wheel, and more particularly to a steering wheel made of reinforced plastic.

In general, a steering wheel of an automobile is composed of a ring-shaped rim that serves as a grip, a boss that is an attachment part to the steering shaft, and spokes that integrally connect the rim and boss. In this steering wheel, the rim, boss, and spokes are all made of carbon, the rim and spokes, and the spokes and boss are welded, and the rim is molded with a design mold made of rubber or plastic. As it was constructed mainly of steel, even the lightest one weighed 2 kg. For this reason, when driving at high speed or on rough roads, the steering wheel is set to 1%.
1 ring wheel vibrates.

This has disadvantages in that it reduces operational stability and causes discomfort to the driver, and also increases fuel consumption.

The present invention has been made to eliminate the above-mentioned conventional drawbacks; it is lightweight, has sufficient power, does not cause vibration when driving, has good operability, and can reduce fuel consumption. The purpose of the present invention is to provide a steering wheel with excellent impact characteristics.

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

1 to 4 respectively show a 1111 side view, a front view, and a sectional view of a steering wheel according to two embodiments.

In Figure 1, the steering wheel is 11 mm (1
), spokes (2) and bosses (3).

It is fitted onto the steering shaft (4) at the serration engagement part (5) provided on the boss (3) and fixed with a nut 16). Normally, the force applied to the steering wheel is sufficient to withstand the rotational moment and torsional moment associated with the steering wheel idle while the car is running, but in a collision, the driver violently blows snow onto the steering wheel and the steering wheel is damaged. If there is damage that leaves a knife wound, it is a serious drawback as it can cause injury to the human body. As shown in Figure 1, when the impact energy Q of a human body or the like is applied to the rim (1), the moment M shown in the figure is applied, and the maximum stress due to this moment is ) occurs.

The conventional boss C3), spokes (2), and rim (1) made of Kishi Soko steel had a structure in which the base (7) was bent to absorb part of the impact energy by deforming it.

Spokes (2) are used in reinforced plastic steering wheels that are lightweight, have improved imaging characteristics, and are easy to operate.
The unidirectional reinforcing fibers (8) of carbon fibers or glass fibers, which are the strength members of It will be done. As a result, the part before damage becomes a knife, or the plastic part shatters, exposing the shaft of the steering shaft, resulting in serious defects such as being pierced by the human body. The purpose of this embodiment is to eliminate this problem, and as shown in the cross-sectional views of the boss wheel in Figs. A steel arm f+1 is taken out and integrated with the core material (9) made of foam material of the spoke (2), and a unidirectional reinforcing fiber (8) such as carbon fiber, glass fiber, aramid fiber, or alumina fiber is attached to the outside thereof. ,
It is wound in the longitudinal direction and in an orientation with an inclination of 45″, and the arm in and the unidirectional reinforcing fiber (8) are wrapped to reinforce the arm in,
It has a structure in which unidirectional reinforcing fibers O3 of aramid fibers are wound in the spoke circumferential direction to prevent the end portions 011 of the unidirectional reinforcing fibers (8) from being damaged.

Each unidirectional reinforcing fiber is impregnated with a matrix of plastics before or after orientation, and then cured by heat.

According to this structure, the base (7) becomes the end where arm 01 and unidirectional fibers +81 and i+2 are combined,
Since it has the lowest 11i1+1 strength and is carbon steel, it is subjected to impact force Q, and when the maximum stress is generated, it bends and absorbs a part of the energy. This prevents the end O0 of the unidirectional fiber (8) from breaking when the base (7) is greatly deformed due to abnormal impact force by utilizing the difficulty of being cut due to the fiber nature.

These characteristics give the steering wheel an important characteristic: it does not cause damage to the human body due to edges.

Furthermore, since the steering wheel is lightweight, it is possible to obtain a steering wheel with good photographic characteristics, good operability, and high safety.

In the above embodiment, the arms are arranged in two stages, upper and lower, but the same effect can be obtained even if the arms are in one stage as shown in FIG. 5. As shown in FIG. The same effect can be obtained even if the arm is extended as shown in Figure 7, and even if it is extended to the rim and has the function of a spoke, the weight can be reduced, and the same effect can be achieved. .

[Brief explanation of the drawing]

FIG. 1H and FIG. 4 show an embodiment of the present invention. Fig. 1 is a side view, Fig. 2 is a front view thereof, Fig. 3 is a sectional view thereof, Fig. 4 is a detailed cross-sectional view of the boss wheel, and Figs. 5 to 7 are other embodiments of the present invention. FIG. 3 is a cross-sectional view showing an example. In the figure, (1) is the rim, (2) is the spoke, (3) is the boss, (4) is the steering shaft, (5) is the engaging part,
(6) Hastu h, f71 is the base, (8) is the rutted fiber,
(9) is the core material, the quotient is the arm, 01) is the end, (1z is the unidirectionally reinforced aramid fiber. The same reference numerals in each figure indicate the same or equivalent parts. Agent: Shin Kuzuno.

Claims (1)

[Claims] (1) In a steering shaft consisting of a ring-shaped rim that serves as a grip, a boss that is an attachment part to the steering shaft, and spokes that integrally connect the rim and boss, the rim and spokes are lightweight. It is formed from a shape-retaining material and has a plastic layer reinforced with unidirectional reinforcing fibers on its outer periphery.
A steering wheel characterized by a steel arm protruding from a @-made boss, and reinforcing fibers wrapped around the arm up to its base. (21) The steering wheel according to claim 1, characterized in that reinforcing fibers are further wrapped around the arm portion in the circumferential direction on top of the reinforcing fibers that are wound up to the base of the arm for reinforcement. (3) The steering wheel according to claim 1, wherein the arms are extended to form spokes.