JPH01314612A - Wheel - Google Patents

Abstract

PURPOSE:To enable a wheel to be rotated in running even when air within a tire is emptied by arranging a tire support wheel between the both side flanges of a rim, and concurrently arranging a directional element having a specified air resistance exerted between an air chamber and the inside of the tire. CONSTITUTION:A hollow tread support wheel 3 the diameter of which is larger than the outer diameter of respective flanges 2, is arranged between the respective flanges 2 positioned at the both sides of a rim 1. And a directional element 6 is arranged between the inside of an air chamber 4 formed in the tread support wheel 3 and the inside of a tire 5. In this case, the directional element 6 is set up in such a way as to provide little resistance when air flows from the inside of the tire 5 to the inside of the air chamber 4, and to provide great resistance when air flows from the inside of the air chamber 4 to the inside of the tire 5 on the contrary. This constitution thereby enables the tread support wheel 3 to support the tread of the tire 5 even when air within the tire 5 is emptied, thereby making it possible to allow the air resistance of the directional element 6 to damp the shock acting on the tire 5.

Description

[Detailed description of the invention] (b) Field of application for industry-1- The present invention relates to wheels for automobiles and the like.

(b) Conventional technology With the combination of conventional automobile wheels and tires, if the air inside the tires escapes, the automobile cannot continue to run. In other words, if you continue to drive with a flat tire, the tire will break or the beat will come off. In order to allow the tire to run to a certain extent even when the air is let out, there are ways to install a tread with an outside diameter larger than the outside diameter of the flange between the left and right flanges of the wheel, or insert a foamed plastic ring into the tire separately. However, in the event of a puncture, a method of supporting the tread with a foamed plastic ring was proposed, but all of these methods had the disadvantage of increasing the unsprung TTT of the tire and wheel, deteriorating running performance and ride comfort.

In addition, it was difficult to put this method into practical use because changing the shape of the tire to give it run-flat characteristics would not be compatible with tires that are currently standardized and distributed around the world.

(c) Problems to be solved by the invention The present invention uses currently standardized tires in circulation as they are, adds run-flat characteristics to them, and further improves running performance and ride comfort by increasing the weight under the wheels. The aim is to provide a wheel that does not deteriorate.

(2) Means for solving the problem The means for solving the problem according to the present invention is to provide a hollow tread support ring with an outer diameter larger than the outer diameter of the flange between the flanges on both sides of the rim of the wheel, and to support the tread. Between the air chamber inside the ring and the air chamber directly formed by the tubeless tire, there is less resistance when air flows from inside the tire into the support wheel, and conversely when it flows into the tire from inside the support wheel. The first thing to do is to provide a directional element that has a large size.

(E) Effect By taking the above measures, you can use conventional tires as they are, and even if the air inside the tires escapes while driving,
Since the tread support wheel, which has an outer diameter larger than the outer diameter of the flange, supports the tire tread, the sidewall of the tire does not fold, and the load applied from the wheel does not concentrate on a part of the tire, so the car can remain as it is. It is possible to continue running for some time. At the same time, spring action and shock absorber action are added to the wheels to actively contribute to improving the performance of the automobile, especially the ride comfort.

(f) Example 1 Figure 1 shows a tubeless wheel according to an example of the present invention.
In the longitudinal section when tires are installed, (1) is the rim, (2)
is a flange, (3) is a tread support wheel, (4) is an air chamber in the tread support wheel, and (5) is a tire. automatic 11
Even if air escapes from the tire (5) while the vehicle is running, the flange (2)
The tread support wheel (3), which has an outer diameter larger than the outer diameter of the tire (5), supports the trend of the tire (5), so the sidewall of the tire (5) does not fold, and the load applied from the wheel is transferred to the tread support wheel ( 3) by tire (5
) is dispersed over a relatively large area of the tread, allowing the car to continue running for a certain amount of time without damaging the tires or wheels. In this case, if a lubricant is applied between the outer periphery of the tread support wheel (3) and the trend inner surface, the running performance in the event of a puncture, that is, the run-flat characteristics, will be further improved.

Additionally, a directional element (
6) when air flows from inside the tire (5) to the air chamber (4), the resistance is small;
5) If air flows inside, install it so that the resistance increases. When the tire (5) is hit while the car is running and the air pressure inside the tire increases, the air flows into the air chamber (4) through the directional element (6) with a small resistance and cushions the impact. When the air returns to the tire (5) by 11 degrees from the air chamber (4), it passes through the directional element (6) with a large resistance, so the energy is transferred here. Vibration caused by impact is effectively absorbed, improving the ride comfort of the car. That is, such a wheel greatly improves the shock absorbing effect of the tire, which more than offsets the increase in unsprung weight caused by the provision of the tread support wheel (3).

FIG. 2 shows another embodiment of the invention, in which the air chamber (4) inside the tread support wheel (3) is expanded to the outside of the wheel. (7) shows the air chamber of the expanded part. In such an embodiment, air chambers (4) and (7)
), the spring action and shock absorber action of the tire are further improved.

FIG. 3 shows an example of a directional element, in which a large number of nozzles (8) are stacked. Air flows in the direction of the nozzle, ie in the direction of arrow (9), with little resistance, but in the opposite direction, it encounters a large resistance.

FIG. 4 shows another example of a directional element, in which a small hole (10) and a thin plate valve (11) are used together. When the air flows in the direction of the arrow (9), the thin plate valve (11) opens, so there is little resistance to the flow, but when the air flows in the opposite direction, the thin plate valve (11) closes and the air flows through the small hole (10). Resistance is a dog because it flows only through.

(G) Effects of the Invention According to the present invention, even if the air inside the tire is released while the vehicle is running, the vehicle can continue to run for some time. This run-flat characteristic can be obtained by using tubeless tires, which are currently standardized and distributed worldwide, and also improves the driving performance and ride comfort of automobiles, so the effect is extremely high. It's big.

[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 sectional view showing another embodiment according to the present invention. FIG. 3 is a longitudinal cross-sectional view of an example of a directional element. FIG. 4 is a longitudinal sectional view of another example of a directional element. In the figure, (1) is the rim, (2) is the flat, (3) is the tread support wheel, (4) is the air chamber, (5) is the tire, (6) is the directional element, and (7) is the air chamber. Extended part of. (8) is the nozzle, (9) is the direction of air flow, (10)
is a small hole, and (11) is a thin plate valve. one

Claims (1)

[Claims] A hollow tread support ring with an outer diameter larger than the outer diameter of the flange is provided between the flanges on both sides of the rim, and between an air chamber in the tread support ring and an air chamber directly formed by the tubeless tire, A wheel equipped with a directional element such that when air flows from inside the tire to the support wheel, the resistance is small, and when air flows from the inside of the support wheel to the tire, the resistance is large.