JPS5847610A - Air inflation method for tubeless tire and device thereof - Google Patents

Abstract

PURPOSE:To obviate an air leakage in time of air inflation, by forming an air film layer with compressed air jetted to a rim flange part, while charging the compressed air inside a tire and then quickly stopping the feed of compressed air to said rim flange. CONSTITUTION:A ringlike air ring 5 fittable to the diameter of a rim where a lot of nozzle holes 5a are provided in position adjacent to the flange of a rim 1 is set up at the rim flange part. And, compressed air is jetted as approximating the flange of the rim 1 by the air ring 5 and simultaneously when the compressed air is charged inside a tire 2 via an air valve 3, air stream of the air ring 5 forms an air film over a bead part 4 all around. During this interval, compressed air is charged into space inside tire. Afterward, when air jetting from the air ring 5 is quickly stopped, the bead 4 of the tire 2 is pushed upward by dint of internal pressure in the tire 2 so that the bead 4 adheres closely to the rim bead sheet and airtightness is thus secured.

Description

[Detailed Description of the Invention] This invention is based on #! This invention relates to an air filling method and device for filling a tubeless tire attached to a rim with air.

Conventionally, when filling tubeless tires with air,
Air leaks from the gap between the bead seat and the rim of the tire, making it impossible to fill the tire sufficiently, and the bead seat cannot be airtightly set on the rim. In particular, when the bead angle of the rim is large, there is a lot of air leakage, making it difficult to set the internal pressure.

This invention has been made in view of the above-mentioned circumstances, and is designed to facilitate air filling of tubeless tires.
Pressure near one or both sides of the lunge! ! The tire is characterized by filling the tire with compressed air while heating air to form an air expansion layer, and then rapidly stopping the supply of compressed air to the rim 7 lunge to fill the tire with air. The present invention provides a method and device for filling air in a tubeless tire.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the figure, the rim IK tire 2t-
The trap is set so that air is filled from an air valve 3 attached to the rim.

The tire 2 is pushed to the side opposite to the valve 3 to bring the bead seat 4 of the tire 2 into close contact with the rim 1.

In addition, a large number of nozzle holes 5a or slits may be provided close to the flange of the rim l to which the air valve 3 is attached, or a ring-shaped air*st fitting the rim diameter may be hooked onto the flange of the rim 7. , the air ring 50 is a trap so that pressurized air is sent from a compressor (not shown) to the vibro fixed at a predetermined position.

As described above, when compressed air is ejected from the rt2 air pressure 5 near the 7th lung of the rim 1 and at the same time fills the tire 2 yen from the % air valve 3, the air @S is The air flow is centered on the bead of the tire 2, and a portion of the air flows toward the tire, forming an air film over the entire circumference of the bead.

On the other hand, the light from air valve 3 jXtf! The light is also on the tire circle air review, and the pressure is boosted in the trench. After that, the air blown out from the air ring is quickly cut off by a separately provided stop valve (not shown), and the internal pressure of 2 yen in the tire rapidly pushes up the bead of tire 2, causing it to form tire bead 4. The rim bead sheet comes into close contact and maintains airtightness.

Therefore, from then on, it becomes possible to easily fill the tire internal pressure to a predetermined pressure.

As explained in detail above, the tubeless tire air filling device according to the present invention is a simple Wjl! All you have to do is prepare a device that will overcharge the rim diameter of the air ring and attach it to the rim flange, and it can be made at a low cost. Also, the air ring may be attached to one side of the rim 7 flange portion, or it may be attached to both sides.

Therefore, there is no air leakage between the tire and the rim when filling 111 air into a tubeless tire, and it is possible to easily change the air to I41 yen, which brings about practical effects.

[Brief explanation of drawings]

The attached drawing is a partial cross-sectional view of a tire rim showing an air filling system for a tire according to the present invention. l...Rim, 2...Tire, 3...
...Air valve, 4...Bead, 5...
Air ring %5 &... Nozzle hole, 6... Pipe. Patent applicant Agent: Topie Gyo Co., Ltd.
Patent attorney Hideaki Sa

Claims (2)

[Claims] (1) When filling air into tubeless tires,
Compressed air is ejected close to one or both sides of the rim flange to form an air expansion layer and fill the tire with compressed air.Then, the ejection of compressed air from the 7 flange portion is rapidly stopped, and the inside of the tire is filled with compressed air. A tubeless tire air filling method characterized by performing air flash*. (2) When filling air into tubeless tires,
A large number of nozzle holes or slits are provided on one or both sides of the rim 7 flange, or a ring-shaped air fitting to the diameter is hooked onto the rim 7 flange, and compressed into the air 11. A tubeless tire with a 1% image has a pipe for supplying air and a separate valve for supplying compressed air.
ili device.