JP3497280B2 - Tire wheels - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire wheel in which a rim on which a tire is mounted is provided with an air valve capable of adjusting the air pressure of an air chamber in the tire.

[0002]

2. Description of the Related Art Such wheels are roughly classified into a tube-containing tire wheel with a tube inside and a tubeless tire wheel without a tube. In both wheels, a tire or tube is punctured by a nail or the like. It is known to inject a liquid sealing agent for the temporary repair of puncture scratches into a tire for the purpose of preventing air leakage from the tire as much as possible.

[0003]

However, in a tire wheel into which a liquid sealant has been injected, the sealant sometimes causes the air valve to be clogged.

[0004] The present invention has been made in view of the mentioned circumstances, to prevent clogging of the air valve by liquid sealing agent injected into the tire, and the like can always function properly the air valve It is an object to provide the tire wheel.

[0005]

In order to achieve the above object, the present invention provides a rim on which a tire is mounted,
The tire is equipped with an air valve that can adjust the air pressure in the air chamber.
Liquid sealant for tire puncture repair was injected inside.
In the tire wheel described above, the first feature is that the breathable liquid-proof member is interposed between the air passage of the air valve and the air chamber.

In addition to the above features, the present invention has a second feature in that a rim is provided with a liquid injection valve capable of injecting a liquid sealant for puncture repair into the tire.

[0007]

According to a first aspect of the work for the present invention, note in the tire
The liquid sealant that has entered is prevented from entering the air valve by the liquid-proof function of the gas-permeable liquid-proof member. On the other hand, the ventilation function of the breathable liquid-proof member allows the air valve to supply and discharge air to and from the air chamber without any trouble.

Further, according to the second aspect of the present invention, the liquid sealant can be easily injected into the tire by using the liquid injection valve.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, a first embodiment of the present invention shown in FIGS. 1 to 3 will be described. A tire wheel W for a motorcycle includes a rim 1, a hub 2 arranged in the center of the rim 1, and the rim 1
And a large number of wire spokes 3 that connect the hubs 2, a tire 4 mounted on the rim 1, and a tube 5 mounted inside the tire 4. Since the tube 5 defines a ring-shaped air chamber 6 therein, an air valve 7 and a liquid injection valve 8 are provided at two locations on the inner peripheral wall 5i that face each other on the diameter line.

As shown in FIG. 2, the air valve 7 has a known check valve (not shown) capable of forcibly opening in the air passage 10 in the valve cylinder 9, The flange 9a formed at the inner end of 9 is embedded in the inner peripheral wall 5i of the tube 5 and baked. The valve cylinder 9 is inserted into a mounting hole 11 formed in the rim 1 and fixed to the rim 1 by a pair of inner and outer nuts 19 and 20.

The inner peripheral wall 5i of the tube 5 is provided with a through hole 12 for communicating the air passage 10 in the valve cylinder 9 with the air chamber 6, and the breathable liquid-proof member 13 interposed in the through hole 12 is formed. It is embedded in the inner peripheral wall 5i and baked. Breathable liquid-proof member 13
Is made of, for example, a high-density woven fabric using microfibers, and allows the passage of air, but prevents the passage of a liquid sealing agent 14 to be described later. Is provided with a plurality of anchor holes 15.

A cap 16 for closing the air passage 10 is screwed onto the outer end of the valve cylinder 9.

On the other hand, as shown in FIG. 3, the liquid injection valve 8 has the same structure as the air valve 7 except that the valve hole of the internal check valve is larger than that of the air valve 7. Therefore, the flange 17a formed at the inner end of the valve cylinder 17 of the liquid injection valve 8 is also embedded and baked in the inner peripheral wall 5i, and the valve cylinder 17 is
It is inserted into the mounting hole 25 of the rim 1 and fixed to the rim 1 by the nuts 23 and 24. The inner end of the flow passage 18 in the valve cylinder 17 communicates with the air chamber 6 through the through hole 21 of the inner peripheral wall 5i, and the outer end of the flow passage 18 is screwed to the outer end of the valve cylinder 17. The cap 22 is closed. The through hole 21
The breathable liquid-proof member 13 is not interposed in this.

Then, the cap 22 of the liquid injection valve 8 is removed,
An appropriate amount of the liquid sealant 14 is injected into the air chamber 6 of the tube 5 through the liquid injection valve 8.

Next, the operation of this embodiment will be described. When the tire wheel W rotates, the liquid sealant 8 moves radially outward as shown in FIG. 2A by the action of centrifugal force to cover the outer peripheral side inner surface of the tube 5. At this time, when the outer peripheral walls of the tire 4 and the tube 5 are punctured by nails or the like, the sealant 14 immediately fills the puncture, that is, repairs it, so that the air in the air chamber 6 leaks from the puncture to the outside. Can be delayed significantly.

In the stopped state of the wheel W, the liquid sealing agent 14 may block the outer end of the through hole 12 which is continuous with the air passage 18 of the air valve 7, depending on the stop position, as shown in FIG. 2B. However, since the breathable liquid-proof member 13 is interposed in the through hole 12, the liquid-proof function of the member 13 prevents the sealant 14 from entering the air valve 7, and the sealant 14 causes the air valve 7 to enter. Can be prevented from clogging.

When adjusting the pressure of the air chamber 6, first, the wheel W is rotated to a position where the air valve 7 faces the side of the wheel W.
By doing so, the sealing agent 14 that has blocked the through hole 12 flows down and opens the through hole 12, so that the air can be smoothly supplied to and discharged from the air chamber 6 through the air valve 7 and the air-permeable liquid-proof member 13. be able to.

FIG. 4 shows a second embodiment of the present invention.
The present invention is applied to a tubeless tire wheel Wa. That is, the wheel Wa has the rim 31 and the rim 3
1. The plate-shaped spokes 32 welded to the circumferential surface of No. 1 and the rim 31
And a tubeless tire 33 attached to
The tube race tire 33 defines an air chamber 34 between its circumferential surface and the outer circumferential surface of the rim 31. A mounting hole 35 is formed in the center of the rim 31 in the axial direction.
Is snap-in type.

That is, the air valves 36 are arranged so that they are mutually in the annular groove 3.
9. A rubber elastic mounting member 40 having a pair of inner and outer bulged portions 37, 38 defining 9; a valve cylinder 41 whose inner end side is embedded and baked in the mounting member 40; and air in the valve cylinder 41. It comprises a known forced-valve check valve (not shown) interposed in the passage 42. The enlarged portions 37 and 38 are formed to have a diameter larger than that of the mounting hole 43 of the rim 31. The enlarged portion 37 on the inner end side is pushed into the mounting hole 43 and the annular groove 39 is airtightly engaged with the peripheral portion of the mounting hole 37. By doing so, the attachment member 40 is attached to the rim 31.

The attachment member 40 includes an air passage 4 of the valve cylinder 41.
A through hole 44 that communicates 2 with the air chamber 6 is provided, and the breathable liquid-proof member 14 inserted in the through hole 44 is embedded and coupled to the mounting member 42. Other configurations are the same as those in the previous embodiment, and in the figure, the same reference numerals are given to the portions corresponding to those in the previous embodiment.

When the liquid sealant 14 is injected into the tire 33, that is, the air chamber 34, the mounting member 40 of the air valve 7 is removed from the mounting hole 35 of the rim 3, and the mounting hole 35 is attached.
Then, the sealant 14 is injected. And after injection, mounting hole 3
5. Reattach air valve 36 to 5.

Also in this embodiment, when the outer peripheral wall of the tire 33 is punctured while the wheel Wa is rotating, the puncture is repaired by the sealant 14 immediately. Even if the sealant 14 enters the through hole 44, the air-permeable liquid-proof member 13 can prevent the sealant 14 from entering the air valve 9 and prevent clogging of the air valve 7. Therefore, even when the pressure gauge is applied to the air valve 7 and the pressure in the air chamber 6 is measured, the seal liquid 14 does not clog the pressure gauge.

FIG. 5 shows a third embodiment of the present invention.
A rubber inner liner 45 that cooperates with the rim 31 to define the air chamber 6 is disposed in the tubeless tire 33 of the wheel Wb.
By adhering to the tire 3, the bag-shaped portion 46 is defined between the inner surface of the outer peripheral wall 33t of the tire 33 and the inner liner 45. As a manufacturing method thereof, the tire 33 and the inner liner 4 are provided at a portion corresponding to the bag-shaped portion 46 during vulcanization molding of the tire 33.
An efficient method is to apply a release agent (talc or the like) to the facing surface of No. 5 and vulcanize and bond the tire 33 and the inner liner 45 at the other portions. After the vulcanization, residual air is extracted from the bag-shaped portion 46 with a syringe or the like, and then the liquid sealing agent 14 is injected into the bag-shaped portion 46.

The other construction is the same as that of the second embodiment, and in the figure, the same parts as those of the second embodiment are designated by the same reference numerals.

According to this embodiment, the liquid sealant 13 is applied to the outer peripheral wall 33t of the tire 33 by the pressure of the air chamber 34 acting on the bag-shaped portion 46 regardless of the rotation and stop of the wheel Wb.
Since the layer having a uniform thickness is formed on the inner peripheral surface, the effect of repairing the sealant 14 against the puncture of the tire 33 can be enhanced. Also, in this case, the nails are the tire 3
Even if the sealing agent 14 in the bag-shaped portion 46 leaks from the puncture wound of the inner liner 45 to the air chamber 34 side after penetrating through 3 and the bag-shaped portion 46, the sealing agent 14 enters the air valve 36. Are blocked by the breathable liquid-proof member 13.

The present invention is not limited to the above embodiments, and various design changes can be made without departing from the gist of the invention. For example, also in the second and third embodiments, the liquid injection valve 8 can be attached to the rim 31 as in the first embodiment.

[0028]

As described above, according to the first aspect of the present invention, since the breathable liquid-proof member is interposed between the air passage of the air valve and the air chamber, the liquid sealing agent injected into the tire. The air-permeable liquid-proof member can prevent the air valve from clogging, and the air valve can be prevented from clogging, while the air valve supplies and discharges air to and from the air chamber. It can be performed without hindrance without being hindered by the members. Further, according to the second feature of the present invention, since the rim is provided with the liquid injection valve capable of injecting the liquid sealant for puncture repair into the tire, the liquid injection valve is used, and the liquid sealant is used. Can be easily injected into the tire.

[Brief description of drawings]

FIG. 1 is a side view of a tire wheel for a motorcycle according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

3 is an enlarged sectional view taken along line 3-3 of FIG.

FIG. 4 is a vertical cross-sectional view of a main part of a tubeless tire wheel according to a second embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a main part of a tubeless tire wheel according to a third embodiment of the present invention.

[Explanation of symbols]

W tire wheel Wa tire wheels Wb tire wheel 1 rim 4 tires 6 air chamber 7 Air valve 8 Injection valve 10 air passages 12 through holes 13 Breathable liquid-proof member 14 Liquid sealant 31 rim 33 tubeless tires 34 Air chamber 36 Air valve 42 Air passage

Claims (2)

(57) [Claims] 1. An air chamber (6) in a tire (4, 33) on a rim (1, 31) to which the tire (4, 33) is mounted.
An air valve (7, 36) that can adjust the air pressure of 34) is attached.
The tire (4,33) is located inside the tire (4,33).
In a tire wheel in which a liquid sealant (14) for repairing puncture wounds is injected , ventilation is performed between the air passages (10, 42) of the air valve (7, 36) and the air chambers (6, 34). A tire wheel having a liquid-proof liquid-proof member (13) interposed. 2. The rim (1) according to claim 1, wherein the liquid sealant (1) is provided in a tire (4).
A tire wheel characterized by being provided with a liquid injection valve (8) capable of injecting 4).