JPH01293201A - Wheel - Google Patents

Abstract

PURPOSE:To improve a ride feeling by providing the directional element having the small air flow resistance from the inside of a tire to that of a disk and the large air flow resistance in the reverse direction between the air chamber of the hollow disk having a monocock structure and the air chamber of the fire in the wheel of an automobile etc. CONSTITUTION:The air chamber 4 within a tire and the air chamber 1 of the hollow disk having a monocock structure are communicated with a directional element 5. The element 5 is formed so that the flow resistance of the air from the chamber 4 of the tire to the chamber 1 of the hollow disk is small and the resistance of the flow in the reverse direction is large. In this constitution, when a tire 3 receives a shock during the travel of an automobile, the air pressure of the tire becomes high and the air passes the element 5 to flow into the chamber 1 in a small resistance. When the tire inner pressure returns to an original pressure with the shock gone and the air returns to the chamber 4 from the chamber 1, the shock is absorbed since the air gradually returns by the large resistance. Consequently a ride feeling can be improved.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to wheels for automobiles and the like.

(b) Conventional technology Performance improvements in automobile tires have been remarkable in recent years, including high-speed performance, steering performance, directional stability performance, braking performance, wet performance, load performance, wear resistance performance, bank resistance performance, Various performances such as ride comfort and noise level are often contradictory to each other, and improving one often results in a decrease in the other. In particular, with flat tires that have become popular in recent years, ride comfort is often sacrificed in order to improve other performance. On the other hand, it is becoming increasingly important to reduce the weight of the wheels that pair with the tires and reduce their unsprung weight, but at the same time, improvements that actively contribute to improving driving performance are desired.

(c) Problems to be Solved by the Invention The present invention aims to reduce the weight of the wheel and at the same time add spring action and shock absorber action to the wheel, thereby improving the performance of the automobile, especially the ride comfort. It is something.

(d) Means for Solving the Problems The present invention provides a system between the air chamber in the hollow disc of the monocoque structure of the wheel and the air chamber formed by the rim and the tubeless tire, in which air is drawn from inside the tire into the disc. A directional element is provided so that the resistance is low when the fluid flows inward, and the resistance is high when the fluid flows into the tire rather than into the disk.

(E) Effect + By taking the measures described in 1 above, the weight of the hollow monocoque disc wheel can be reduced while maintaining the required strength. Also, when a tire is hit while the car is running and the air pressure inside the tire increases, the air follows the directional element with small resistance and flows into the air chamber of the hollow disc to cushion the impact, but once the impact is gone, the air pressure inside the tire increases. When the air pressure returns to its original level and the air returns to the tire from the air chamber of the hollow disc, it passes through a directional element with large resistance, so energy is consumed here and vibrations caused by impact are effectively absorbed. be.

(F) Embodiment FIG. 1 is a vertical cross-section of a wheel according to an embodiment of the present invention with a tire mounted thereon, and (1) is an air chamber, which is surrounded by the outer wall (2) of a disk having a monocoque structure. (3) is the mounted tire, (4) is the air chamber in the tire, (5) is the directional element, and (6) is the bolt hole for mounting the wheel. When a tire (3) receives an impact while the car is running, the pressure in the tire air chamber (4) increases and the air flows through the directional element (5).
) into the air chamber (1). In this case, the resistance of the directional element (5) to the air flow is small. When the impact is gone and the pressure in the tire air chamber (4) returns to normal, the air passes through the directional element (5) and returns to the tire air chamber (4) again.

However, when levering, the air passes through the directional element (5) with increased resistance, so the energy of the impact is consumed and absorbed here, improving the ride comfort of the car.

FIG. 2 shows an example of a directional element, in which a large number of nozzles (7) are stacked. Air flows in the direction of the nozzle, ie in the direction of arrow (8), with little resistance, but in the opposite direction, it encounters a large resistance.

FIG. 3 shows another example of a directional element, in which a thin plate valve (lO) is used together with a small hole (9). When the air flows in the direction of the arrow (8), the thin plate valve (10) opens, so there is little resistance to the flow, but when the air flows in the opposite direction, the thin plate valve (10) closes and the air flows through the small hole (9). The resistance is large because the flow only passes through the

(g) Effects of the Invention The present invention exhibits a remarkable effect in improving the riding comfort of automobiles, particularly in reducing the %-loss.

In addition, in flat tires where the amount of air in the tire is small (and the ride comfort is likely to be sacrificed), this effect, combined with the fact that the inner diameter of the tire is large and the air chamber (1) can be enlarged,
It is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a tire mounted on a wheel according to an embodiment of the present invention. FIG. 2 is a longitudinal cross-sectional view of an example of a directional element. FIG. 3 is a longitudinal cross-sectional view of another example of a directional element. In the figure, (1) is the air chamber, (2) is the outer wall of the monocoque disc, (3) is the mounted tire, (4) is the air chamber inside the tire, (5) is the directional element, and (6) is Bolt hole for wheel mounting, (7) is the nozzle, (8) is the direction of air flow, (9) is the small hole, and (10) is the thin plate valve.

Claims (1)

[Claims] Between the air chamber of the monocoque hollow disc and the air chamber formed by the rim and tubeless tire, there is less resistance when air flows into the disc than inside the tire, and conversely when it flows into the tire from inside the disc. is a wheel equipped with a directional element that increases resistance.