JP3173508U - Air valve for tubeless tire - Google Patents

Abstract

An air valve for a tubeless tire capable of easily performing an operation of mounting a tubeless tire on a valve mounting hole of the wheel while the tubeless tire is mounted on the wheel.
A valve body 18 is formed in a hollow cylindrical shape having a diameter that can be inserted into a valve mounting hole that is opened in a wheel. A valve core is housed inside and air is discharged from the other end. A pair of facing portions 20 facing each other across the central axis of the cylinder of the valve body, a pin member 22 that crosses between the pair of facing portions, a longer side longer than the diameter of the valve mounting hole, and a diameter of the valve body. A rotating plate piece 24 that is made of a plate piece having a short side of the same length and that is pivotally supported by a pin member at a position slightly decentered in the longitudinal direction from the center of gravity is rotated around the pin member. Further, the rotating plate piece is inserted into the wheel and rotated by its own weight so that the longitudinal direction of the rotating plate piece is substantially orthogonal to the central axis of the cylinder, and the valve body is moved in the pulling direction opposite to the inserting direction. regulate.
[Selection] Figure 2

Description

The present invention relates to an air valve for a tubeless tire for injecting air into a tubeless tire mounted on various vehicles such as motorcycles such as motorcycles and automobiles, and more particularly to an air valve for a tubeless tire excellent in maintenance workability such as replacement.

Conventionally, as a tire mounted on various vehicles such as motorcycles such as motorcycles and automobiles, a tube tire including a tube is used on the inside thereof. However, in recent years, tubeless tires that do not include this tube have become mainstream from the viewpoint of improving driving safety when puncture occurs.

This tubeless tire is attached to an annular wheel in an airtight manner. And the air valve for tubeless tires used when injecting air between a wheel and a tubeless tire is attached to the wheel.

Most of the air valves for tubeless tires are installed by being inserted into the valve mounting holes that are opened in the wheel. For example, the mileage of the car becomes longer or the insertion location cracks due to changes over time, causing air leakage. It may cause. Therefore, it is important from the viewpoint of safe driving to replace the tubeless tire air valve at the time of air leakage or at the time of inspection before air leakage. Various proposals have been made so far regarding techniques relating to such an air valve for a tubeless tire (for example, Patent Document 1).

JP 2009-262780 A

According to Patent Document 1, for example, an outer shape resembling a gourd type, and a large part of the main body is integrally attached to the body portion made of rubber and the front end side of the body portion that protrudes to the outside when the wheel is attached. An air valve is disclosed that includes a metal inlet and a cap that engages with a screw formed on an outer peripheral side surface of the metal inlet (see FIGS. 4 and 5 of Patent Document 1).

However, the air valve of Patent Document 1 is such that the tip end side of the air valve is inserted into the valve mounting hole of the wheel from the inside of the wheel and protrudes to the outside (paragraph of Patent Document 1).

And FIG. 3). Therefore, according to the air valve of patent document 1, it is necessary to remove a tire from a wheel and to attach a tire to a wheel again after replacing | exchanging an air valve at the time of the replacement | exchange.

To remove the tire from the wheel, for example, place the tire removed from the vehicle sideways on the ground, insert the tip of the bar between the wheel and the tire, and push the tire downward while pushing the wheel at the tip of the bar. Is accompanied by heavy labor such as lifting up. Therefore, according to the air valve of patent document 1, there existed a problem that the replacement | exchange operation | work of an air valve might become complicated.

Therefore, the present invention has been made in view of the above-described conventional problems, and the purpose thereof is to easily perform the work of mounting the tubeless tire in the valve mounting hole of the wheel while being mounted on the wheel. The object is to provide an air valve for a tubeless tire.

  The invention of claim 1 is an air valve for a tubeless tire that is inserted into a valve mounting hole that opens in a wheel and is mounted in the wheel, and is formed in a hollow cylindrical shape having a diameter that can be inserted into the valve mounting hole. The valve core, the air injected from one end side is discharged from the other end side, a pair of opposing portions extending from the other end and facing each other across the central axis of the valve body, A pin member that crosses between the pair of opposing portions while being substantially orthogonal to the cylindrical central axis, a long side that is longer than the diameter of the valve mounting hole, and a short side that is substantially the same as or slightly shorter than the diameter of the valve body And a rotating plate piece pivotally supported by the pin member and rotated about the pin member at a position slightly decentered in the longitudinal direction from the center of gravity. The The rotating plate piece is inserted into the wheel mounting hole and disposed in the wheel, and the rotating plate piece is rotated by its own weight so that the longitudinal direction of the rotating plate piece is substantially orthogonal to the cylindrical central axis. This is an air valve for a tubeless tire.

The invention of claim 2 is the tubeless tire air valve according to claim 1, further comprising a fixing means for fixing the valve body to the wheel in cooperation with the rotating plate piece, the fixing means being the rotating A nut member that is disposed away from the plate piece in a direction opposite to the insertion direction, and includes a nut member that is screwed into a male screw provided on an outer peripheral surface of the valve body. .

The invention of claim 3 is the tubeless tire air valve according to claim 2, wherein the fixing means is a hollow cylindrical packing member having elasticity, and the valve body is fitted into the hollow portion of the air valve. A packing member disposed between the moving plate piece and the nut member is included.

Invention of Claim 4 is the air valve for tubeless tires in any one of Claims 1-3, The distance along the said cylindrical central axis from the other end of the said valve main body to the central axis of the said pin member is the said, It is set to be slightly longer than the distance from the central axis to the closer corner of the rotating plate piece and shorter than the distance from the central axis to the far corner of the rotating plate piece.

The invention of claim 5 is an air valve for a tubeless tire that is inserted into a valve mounting hole that is opened in a wheel and is mounted on the wheel. The air valve is formed in a hollow cylindrical shape, accommodates a valve core therein, and is injected from one end side. A valve body having a male screw on the outer peripheral surface near the other end, and a hollow cylindrical elastic member having a diameter slightly larger than the diameter of the valve mounting hole. And a cylindrical female screw member having an inner peripheral surface that is screwed into the male screw with an outer diameter slightly smaller than the valve mounting hole, and the cylindrical direction of the barrel portion is An internal female screw portion provided on the distal end side of the barrel portion in the cylindrical direction, and the barrel portion is pushed into the valve mounting hole while elastically deforming the barrel portion from the distal end side to mount the barrel portion on the valve. Fit into the hole The internal female screw portion is moved in the direction opposite to the insertion direction by screwing and rotating the male screw of the valve body to the internal female screw portion, and is a side surface portion of the trunk portion, It is an air valve for a tubeless tire in which the side surface portion between the inner surface of the wheel around the valve mounting hole and the internal female screw portion is inflated outward.

A sixth aspect of the present invention is the tubeless tire air valve according to the fifth aspect of the present invention, wherein the valve main body includes a flange portion formed integrally with the valve main body at a central portion in a longitudinal direction thereof.

According to the present invention, in an air valve for a tubeless tire that is inserted into a valve mounting hole that is opened in a wheel and is mounted on the wheel, the air valve is formed in a hollow cylindrical shape having a diameter that can be inserted into the valve mounting hole. A valve body that houses the valve core, and the air injected from one end side is discharged from the other end side; a pair of opposing portions that extend from the other end and face each other across the cylindrical central axis of the valve body; A pin member that crosses between the pair of opposed portions while being substantially orthogonal to the central axis of the cylinder, a long side that is longer than the diameter of the valve mounting hole, and a short side that is substantially the same as or slightly shorter than the diameter of the valve body. A rotating plate piece that is pivotally supported by the pin member at a position slightly decentered in the longitudinal direction from the position of its center of gravity, and rotates around the pin member. in front The rotating plate piece is inserted into the valve mounting hole and disposed in the wheel, and the rotating plate piece is rotated by its own weight so that the longitudinal direction of the rotating plate piece is substantially orthogonal to the cylindrical central axis. Because it is configured, for example, the rotating plate piece is rotated with the pin member facing in the vertical direction, and the longitudinal direction is substantially aligned with the cylinder direction of the valve body, and the rotating plate piece is mounted on the valve together with a pair of opposing parts. Then, the rotating plate piece is rotated by its own weight by a simple operation of rotating the valve body around the central axis of the cylinder to make the pin member substantially horizontal. If the longitudinal direction is substantially perpendicular to the central axis of the cylinder, when force is applied to the valve body in the withdrawal direction opposite to the insertion direction, each end of the rotating plate piece is a wheel around the valve mounting hole. Because it hits the inner surface of the valve, move the valve body in the pulling direction. It is possible to win. Therefore, for example, even if force in the pulling direction is applied to the valve body during the work of fixing the valve body to the wheel, the valve body will not be pulled out of the valve mounting hole each time, so the work of fixing is not complicated and tubeless It is possible to provide an air valve for a tubeless tire that can facilitate the work of mounting the tire on the wheel mounting hole while the tire is mounted on the wheel.

In addition, a fixing means for fixing the valve body to the wheel in cooperation with the rotating plate piece is provided, and the fixing means is disposed away from the rotating plate piece in a direction opposite to the insertion direction. The nut member includes a nut member that engages with a male screw provided on the outer peripheral surface of the valve body. For example, the nut member is rotated in the insertion direction while being screwed and rotated. A tubeless tire that can be easily mounted in the valve mounting hole of the wheel while the tubeless tire is mounted on the wheel by a simple operation of sandwiching the wheel portion around the valve mounting hole between the moving plate piece An air valve can be provided.

The fixing means is a hollow cylindrical packing member having elasticity, and the packing member is disposed between the rotating plate piece and the nut member while fitting the valve body into the hollow portion. For example, the nut member is moved in the insertion direction while screwing and rotating the nut member to press the packing member against the wheel portion around the valve mounting hole, and between the packing member and the rotating plate piece. Provided an air valve for tubeless tires that can be easily installed in the valve mounting hole of the wheel in an airtight state with the tubeless tire attached to the wheel by a simple operation of sandwiching the wheel part around the valve mounting hole it can.

The distance along the cylindrical central axis from the other end of the valve body to the central axis of the pin member is slightly longer than the distance from the central axis to the near corner of the rotating plate piece and the center. Since it is set to be shorter than the distance from the shaft to the far corner of the rotating plate piece, when the rotating plate piece is rotated around the pin member, the closer corner side of the rotating plate piece The other side of the rotating plate piece is in contact with the other end of the valve body, so that its passage is restricted. Therefore, for example, in order to rotate the rotating plate piece and align the longitudinal direction thereof with the cylinder direction of the valve body, the short side closer to the pin member of both the short sides of the rotating plate piece is set. It is necessary to face the other end of the valve body. For this reason, since the center of gravity of the rotating plate piece is located in front of the pin member in a state in which the rotating plate piece is rotated and the longitudinal direction thereof is aligned with the cylinder direction of the valve body, During rotation, the short side portion far from the pin member does not hit the wheel portion around the valve mounting hole, and the rotation due to its own weight can be performed smoothly.

Further, in the tubeless tire air valve which is inserted into the valve mounting hole which is opened in the wheel and is mounted on the wheel, the hollow core is formed and the valve core is accommodated therein, and the air injected from one end side is the other end. A valve body having a male screw on the outer peripheral surface near the other end, a hollow cylindrical elastic member having a diameter slightly larger than the diameter of the valve mounting hole, and a flange at the base end And a cylindrical female screw member having an inner peripheral surface that is screwed to the male screw with an outer diameter slightly smaller than the valve mounting hole, and the cylindrical direction is the cylindrical direction of the barrel part. An internal female screw portion provided on the front end side of the body portion, and the body portion is pushed into the valve mounting hole while being elastically deformed from the front end side to fit the body portion into the valve mounting hole. , The internal female screw portion is moved in a direction opposite to the insertion direction by screwing and rotating the male screw of the main body to the internal female screw portion, and is a side surface portion of the body portion, the valve mounting hole Since the side surface portion between the inner surface of the surrounding wheel and the internal female screw portion is inflated outward, the wheel portion around the valve mounting hole is sandwiched between the inflated side surface portion and the flange. The body part and the valve body inserted into the body part can be attached to the wheel and the space between the side surface of the body part and the valve attachment hole can be made airtight. It is possible to provide an air valve for a tubeless tire that can be easily mounted in an airtight state in the valve mounting hole.

In addition, since the valve main body is configured to include a flange part formed integrally with the valve main body at the center in the longitudinal direction, the flange is moved while the flange part moves in the insertion direction by turning the valve main body. Since it presses against the wheel part around the mounting hole, the wheel part around the valve mounting hole can be more strongly sandwiched between the flared side part and the flange, and the air valve for tubeless tires is less likely to cause air leaks after installation. Can provide.

It is explanatory drawing of the usage example of the air valve for tubeless tires concerning 1st Embodiment of this invention. It is a perspective view explaining the example of the air valve for tubeless tires concerning a 1st embodiment of the present invention. It is explanatory drawing of the relationship between the pin member which concerns on 1st Embodiment of this invention, and a rotation board piece. It is a partial cross section explanatory view explaining the example of use of the air valve for tubeless tires concerning a 1st embodiment of the present invention. It is a perspective view explaining the example of the air valve for tubeless tires concerning 2nd Embodiment of this invention. It is a partial cross section explanatory drawing explaining the usage example of the air valve for tubeless tires concerning 2nd Embodiment of this invention.

Hereinafter, an air valve for a tubeless tire according to an embodiment of the present invention will be described with reference to the drawings.
First, an air valve 10 for a tubeless tire according to a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the air valve 10 for a tubeless tire according to the present embodiment is inserted from the outside into a valve mounting hole 16 that opens in the wheel 12 while the tubeless tire 14 is mounted on the wheel 12 and is mounted on the wheel 12. It is an air valve for tubeless tires that can be used. 1A is a partially cutaway view illustrating an example of use of an air valve for a tubeless tire, and FIG. 2B is a cross-sectional explanatory view in the vicinity of the valve mounting hole 16. 4 (a) to 4 (d) are explanatory views showing a state in which the tubeless tire air valve 10 of the present embodiment is attached to the wheel 12, and FIGS. 4 (a) and 4 (b) show the wheel. FIG. 4C and FIG. 4D are side explanatory views showing the wheel 12 in cross section.

As shown in FIG. 1A, the wheel 12 of the present embodiment includes a substantially cylindrical body portion 11 and rim flanges 13 and 13 ′ provided at both ends of the body portion 11, and the rim flanges 13 and 13 ′. It is a known rim wheel for a tubeless tire in which the tubeless tire 14 can be fitted in an airtight manner. The valve mounting hole 16 is formed, for example, as a circular through hole that opens in the body portion 11 of the wheel 12 as shown in FIGS. 1 (a) and 2 (b).

As shown in FIG. 2, the tubeless tire air valve 10 of the present embodiment has a valve body 18, a pair of facing portions 20, 20 ′ extending from the valve body 18, and a space between the pair of facing portions 20, 20 ′. A pin member 22, a rotating plate piece 24, and a fixing means 40 are provided.
2A shows a perspective view of the air valve 10 for tubeless tire, and FIG. 2B shows a perspective view of the air valve 10 for tubeless tire viewed from the longitudinal direction of the rotating plate piece 24 described later. FIG. 2 (c) shows an exploded perspective view of the tubeless tire air valve 10.

First, the valve body 18 is formed of a hollow cylindrical metal member having a diameter slightly smaller than the diameter B of the valve mounting hole 16 as shown in FIGS. The air is accommodated and the air injected from the one end 26 side is discharged from the other end 28 side. As shown in FIG. 2C, the valve body 18 includes a male screw 50 that is screwed into a nut member 42 described later on the outer peripheral surface from the intermediate position to the one end 26.
As will be described later, when the tubeless tire air valve 10 is mounted on the wheel 12 (see FIG. 4D), a male screw 50 is provided on the outer peripheral surface portion 31 of the valve body 18 where the packing member 48 is disposed. A configuration that does not include is desirable. This is to prevent air leakage along the groove of the male screw 50.

Next, as shown in FIG. 2 (c), each of the pair of facing portions 20, 20 ′ has, for example, a shape obtained by substantially dividing a hollow cylindrical body in its cylindrical direction, and from the other end 28 of the valve body 18. The valve body 18 extends along the cylinder direction and faces the cylinder body 30 with the cylindrical central axis 30 being spaced apart. Note that the shape of the facing portion is not limited to the shape of the present embodiment, and may be, for example, a rod shape as long as it can be inserted into the valve mounting hole 16.

Next, the pin member 22 is made of a metal pin having a length approximately equal to the diameter of the valve body 18. As shown in FIG. 2, the pin member 22 is arranged in a direction in which the longitudinal direction thereof is substantially orthogonal to the cylindrical central axis 30 of the valve body 18, and passes through the cylindrical central axis 30 and a pair of opposing portions 20. , 20 ′ are horizontally mounted and both ends thereof are connected to a pair of facing portions 20, 20 ′.

Next, as shown in FIGS. 2 to 4, the rotating plate piece 24 is a flat plate piece having a long side slightly longer than the diameter B of the valve mounting hole 16 and a short side substantially the same as the diameter of the valve body 18. Consists of. As shown in FIGS. 2 to 4, the rotating plate piece 24 is pivotally supported by the pin member 22 at a position that is the central portion 33 and is slightly eccentric in the longitudinal direction from the center of gravity G. It rotates between the pair of facing portions 20 and 20 ′ around the member 22.

More specifically, as shown in FIG. 3, the pin member 22 has a distance L from the central axis 29 of the pin member 22 to the shorter short side 27 of the short sides 27 and 27 ′ of the rotating plate piece 24. A position that is slightly longer than the radius of the valve mounting hole 16 is pivotally supported. By disposing the pin member 22 in this way, as described later, if the longitudinal direction of the rotating plate piece 24 is substantially perpendicular to the cylindrical central axis 30 of the valve main body 18, the insertion direction of the valve main body 18 is determined. Even if the force in the pulling direction, which is the reverse direction, is applied, both end portions 25 and 25 ′ of the rotating plate piece 24 abut against the wheel inner surface 54 around the valve mounting hole 16 as shown in FIG. The valve body 18 can be prevented from moving and being pulled out in the pulling direction.

2A and 3, the distance M along the cylindrical central axis 30 from the other end 28 of the valve body 18 to the central axis 29 of the pin member 22 is equal to the central axis 29 of the pin member 22. Is set to be slightly longer than the distance M from the central plate 29 to the far corner 32 'of the rotary plate piece 24 and slightly shorter than the distance M from the central plate 29 to the far corner 32 of the rotary plate piece 24. The reason for this will be described later.

Next, as shown in FIG. 2, the fixing means 40 of the present embodiment includes a nut member 42 and a cylindrical packing member 48.
As shown in FIG. 2A, the nut member 42 is formed of a hexagonal cylindrical female screw member having an inner peripheral surface with a female screw 43 that is screwed into the male screw 50 of the valve body 18 described above. As shown in FIG. 2C or 2A, the nut member 42 is disposed away from the rotating plate piece 24 in the direction opposite to the insertion direction F, and is screwed into the male screw 50. However, it can be moved in the insertion direction F.

Next, as shown in FIG. 2 (c), the packing member 48 is made of, for example, a synthetic rubber-made hollow cylindrical body having elasticity, and as shown in FIG. And is arranged between the nut member 42 and the rotating plate piece 24. More specifically, the hollow portion 49 of the packing member 48 is pressed against the outer peripheral surface of the valve main body 18 while being slightly elastically deformed in a state of being fitted to the valve main body 18, so that the space between the outer peripheral surface and the packing member 48 is sealed. State.
As shown in FIGS. 2C and 2A, the fixing means 40 has a cylindrical shape between the packing member 48 and the nut member 42 according to the necessity of the length of the male screw 50, for example. The spacer member 44 may be included, and a ring-shaped plain washer member 46 may be included between the packing member 48 and the nut member 42 as necessary for protection of the packing member 48 or the like.

Next, the usage example of the air valve 10 for tubeless tires of this embodiment is demonstrated using FIG.
First, the air valve attached to the valve attachment hole 16 is removed using a known air valve attachment / detachment tool while the wheel on which the tubeless tire is attached is attached to the vehicle body, and the valve attachment hole 16 is secured.
Next, as shown in FIG. 4A, for example, the packing member 48, then the plain washer member 46, and then the spacer member 44 are fitted in this order from the one end 26 side of the valve body 18 to these valves. Attached to the main body 18. Next, the nut member 42 is screwed and rotated with the male screw 50 to move the above-described member in the insertion direction F, and the packing member 48 is positioned, for example, near the other end 28 (31).

Next, as shown in FIG. 4A, the rotating plate piece 24 is rotated with the pin member directed in the vertical direction, and the longitudinal direction thereof is aligned with the cylinder direction of the valve body 18. At this time, since the distance M along the cylindrical central axis 30 from the other end 28 of the valve body 18 to the central axis 29 of the pin member 22 is set as described above (see FIG. 3), the rotating plate piece. In order to rotate 24 and align its longitudinal direction with the cylinder direction of the valve body 18, that is, the direction of the cylinder central axis 30, as shown in FIG. 4 (a), both short sides 27, It is necessary to make the short side 27 closer to the central axis 29 out of 27 ′ face the other end 28 of the valve body 18. Therefore, the center of gravity of the rotating plate piece 24 is positioned before the pin member 22.

Next, as shown in FIG. 4B, the pair of facing portions 20 and 20 ′ are inserted into the inner side 52 of the wheel 12 from the valve mounting hole 16, and the rotating plate piece 24 is disposed on the inner side 52 of the wheel. Next, as shown in FIG. 4B, when the valve body 18 is rotated about 90 degrees around the cylindrical central axis 30 to make the pin member 22 substantially horizontal, the rotating plate piece 24 rotates by its own weight. As shown in FIG. 4C, the longitudinal direction of the rotating plate piece 24 can be made to be substantially orthogonal to the cylindrical center axis 30. At that time, as described above, since the center of gravity G of the rotating plate piece 24 is positioned before the pin member 22, the pin member 22 out of the short sides 27 and 27 ′ of both the rotating plate pieces 24. The distant short side 27 ′ side portion does not hit the wheel portion around the valve mounting hole 16, so that it is possible to smoothly rotate the rotating plate piece 24 by its own weight.
Thus, according to the air valve 10 for a tubeless tire of the present embodiment, even if the wheel 12 to which the tubeless tire 14 is attached is still attached to the vehicle body, it can be easily attached to the valve attachment hole 16 of the wheel 12.

Next, as shown in FIGS. 4 (c) and 4 (d), the nut member 42 is moved in the insertion direction while being screwed and rotated to press the packing member 48 against the wheel outer surface around the valve mounting hole, The valve body 18 is fixed to the wheel 12 by sandwiching a wheel portion 57 around the valve mounting hole 16 between the packing member 48 and the rotating plate piece 24. As described above, the nut member 42 and the packing member 48 of the present embodiment function as a fixing means for fixing the valve body 18 to the wheel 12 in cooperation with the rotating plate piece 24.

Next, a tubeless tire air valve 60 according to a second embodiment of the present invention will be described with reference to FIGS.
Similarly to the tubeless tire air valve 10 of the first embodiment, the tubeless tire air valve 60 of the present embodiment is inserted from the outside into the valve mounting hole 16 opened in the wheel 12 while the tubeless tire 14 is mounted on the wheel 12. This is an air valve for a tubeless tire that can be attached to the wheel 12 (see FIG. 1A).

The main difference of the second embodiment from the first embodiment is that the rotating plate piece 24 is not provided, but the elastic body portion 64 is provided. The same members and the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
5A is a perspective view for explaining the tubeless tire air valve 60 of the present embodiment, and FIG. 5B is an exploded perspective view for explaining the tubeless tire air valve 60 of the present embodiment. . FIG. 6A to FIG. 6D are partial cross-sectional explanatory views for explaining a state in which the tubeless tire air valve 60 of the present embodiment is attached to the wheel 12.

As shown in FIGS. 5 and 6, the tubeless tire air valve 60 of the present embodiment includes a valve main body 62, a body portion 64, and an internal female screw portion 68 provided on the distal end side of the body portion 64. Prepare.
First, the valve body 62 is formed of a hollow cylindrical metal member having a diameter slightly smaller than the diameter of the valve mounting hole 16 as shown in FIGS. (Not shown) is housed, and the air injected from the one end 70 side is discharged from the other end 72 side. The valve main body 62 has a male screw 74 on the outer peripheral surface near the other end 72 as shown in FIG. As will be described later, when the tubeless tire air valve 60 is mounted on the wheel 12 (see FIG. 6D), the valve body outer peripheral surface portion 73 facing the valve mounting hole 16 includes a male screw 74. No configuration is desirable. This is to prevent air leakage along the groove of the male screw 74.
The male screw 75 provided on the outer peripheral surface on the one end 70 side is for screwing a known cap (not shown) on the one end 70 side.

Next, as shown in FIG. 5B, the body portion 64 is made of a hollow cylindrical elastic member and has a flange 66 at the proximal end. More specifically, the diameter A of the body portion 64 is formed to have a diameter slightly larger than the diameter B of the valve mounting hole as shown in FIG. Then, as shown in FIGS. 6A and 6B, the body 64 is pushed into the valve mounting hole 16 while the side surface is elastically deformed, and is fitted into the valve mounting hole 16. Therefore, the diameter of the barrel portion 64 is set so that the barrel portion 64 does not rotate together with the valve body 62 when the valve body 62 is rotated while being screwed into the internal female screw portion 68 as will be described later. It is desirable to form it with a diameter that fits into the mounting hole 16.

Next, as shown in FIGS. 5 (b) and 6 (b), the internal female screw portion 68 has an outer diameter slightly smaller than, for example, the valve mounting hole 16, and is approximately half the cylinder length of the body portion 64. It is formed of a cylindrical female screw member having a length of 1 to 3 and having a female screw threadedly engaged with the male screw 74 on the inner peripheral surface. Then, as shown in FIGS. 5B and 6B, the internal female screw portion 68 is internally provided on the distal end 76 side of the trunk portion 64 with the cylindrical direction being the cylindrical direction of the trunk portion 64. .

As shown in FIG. 5B, the valve main body 62 of the present embodiment has a flange portion 78 made of, for example, a hexagonal outer periphery at the central portion of the valve main body 62 and away from the male screw 74. Is integrally provided with the valve body 62. 5 and 6, reference numeral 80 denotes a plain washer member.

Next, the usage example of the air valve 60 for tubeless tires of this embodiment is demonstrated using FIG.
First, as shown in FIG. 6A, for example, the other end 72 side of the valve body 62 is inserted into the body portion 64, and the distal end portion of the male screw 74 is screwed into the internal female screw portion 68. Next, as shown in FIGS. 6 (a) and 6 (b), the body 64 is pushed in from the front end 76 while elastically deforming the side surface of the valve mounting hole 16 to be fitted into the valve mounting hole 16.

Next, as shown in FIGS. 6 (b), 6 (c) and 6 (d), for example, the valve main body 62 is rotated while holding the collar portion 78 with a wrench (not shown), and the male screw 74 is moved. The internal female screw portion 68 is screwed and rotated. Then, as shown in FIGS. 6C and 6D, the internal female screw portion 68 moves in the direction K opposite to the insertion direction F. At that time, the side surface portion 82 of the body portion 64 between the wheel inner surface 54 around the valve mounting hole and the internal female screw portion 68 is expanded outward.
With the simple operation as described above, the valve body 62 inserted into the body portion 64 is inserted into the wheel 12 with the wheel portion 57 around the valve mounting hole 16 sandwiched between the bulging side surface portion 82 and the flange 66. It is possible to make the space between the side surface of the body 64 and the valve mounting hole 16 airtight. Further, since the flange portion 78 is moved in the insertion direction by rotating the valve body 62 and the flange 66 is pressed against the wheel portion around the valve mounting hole, the valve mounting hole is formed between the flared side surface portion and the flange 66. The surrounding wheel portion 57 can be sandwiched more strongly.

For example, according to a conventional tire air valve such as an air valve disclosed in Patent Document 1, in the case of an automobile, first, the tire with the wheel is removed from the vehicle body, then the tire is removed from the wheel, and the time until the tire air valve is replaced is Even in the case of skilled workers, it took about 40 minutes. On the other hand, when the tubeless tire air valves 10 and 60 of the present embodiment are used, it is not necessary to remove the wheel from the vehicle body, and further to remove the tubeless tire from the wheel. Therefore, the time required to replace the tire air valve Was about 5 minutes.
In the case of a motorcycle such as a motorcycle, according to the conventional tire air valve, the replacement takes about 60 minutes. However, when the tubeless tire air valves 10 and 60 of the present embodiment are used, about 5 minutes are required. The exchange was completed in about minutes. As described above, according to the tubeless tire air valves 10 and 60 of the present embodiment, the replacement work time can be significantly shortened.

As described so far, according to the tubeless tire air valves 10, 60 of the present embodiment, the operation of mounting the tubeless tire 14 in the valve mounting hole 16 of the wheel 12 is easily performed while the tubeless tire 14 is mounted on the wheel 12. It is possible to provide an air valve for a tubeless tire that can be used.

As described above, some of the embodiments of the present invention have been described in detail with reference to the drawings. However, these are merely examples, and the present invention is applied in other forms in which various modifications and improvements are made based on the knowledge of those skilled in the art. Can be implemented.

10, 60 Tubeless tire air valve 12 Wheel 18, 62 Valve body 20, 20 'A pair of opposing portions 22 Pin member 24 Rotating plate piece 25, 25' Both end portions 26, 70 of the rotating plate piece 27, 27 'Short Sides 28, 72 Other end 29 Pin member central axis 30 Cylindrical central axis 32, 32 'Rotating plate piece corner 40 Fixing means 42 Nut member 43 Female screw 48 Packing member 64 Body 66 Flange 68 Internal female screw 82 Side surface part A of the barrel A Diameter of the valve mounting hole B Diameter of the barrel F Insertion direction K Reverse direction of the insertion direction

Claims (6)

In an air valve for a tubeless tire that is inserted into a valve mounting hole that is opened in a wheel and is mounted on the wheel,
A valve body that is formed in a hollow cylindrical shape having a diameter that can be inserted into the valve mounting hole, accommodates a valve core therein, and discharges air injected from one end side from the other end side;
A pair of facing portions extending from the other end and facing each other across the cylindrical central axis of the valve body;
A pin member that crosses between the pair of opposing portions while being substantially orthogonal to the cylindrical central axis;
A flat piece having a long side longer than the diameter of the valve mounting hole and a short side substantially the same as or slightly shorter than the diameter of the valve body, a position slightly decentered in the longitudinal direction from the center of gravity. A rotating plate piece pivotally supported by a pin member and rotating around the pin member;
The pair of opposed portions are inserted from the valve mounting holes, the rotating plate piece is arranged in the wheel, the rotating plate piece is rotated by its own weight, and the longitudinal direction of the rotating plate piece is An air valve for a tubeless tire characterized by being substantially orthogonal to a cylindrical central axis. A fixing means for fixing the valve body to the wheel in cooperation with the rotating plate piece;
The fixing means includes a nut member that is disposed away from the rotating plate piece in a direction opposite to the insertion direction, and that is engaged with a male screw provided on an outer peripheral surface of the valve body. The tubeless tire air valve according to claim 1. The fixing means includes a hollow cylindrical packing member having elasticity, and the packing member is disposed between the rotating plate piece and the nut member while fitting the valve body into the hollow portion. The air valve for a tubeless tire according to claim 2, wherein: The distance along the cylindrical central axis from the other end of the valve body to the central axis of the pin member is slightly longer than the distance from the central axis to the closer corner of the rotating plate piece and from the central axis. The tubeless tire air valve according to any one of claims 1 to 3, wherein the air valve is set shorter than a distance to a far corner of the rotating plate piece. In an air valve for a tubeless tire that is inserted into a valve mounting hole that is opened in a wheel and is mounted on the wheel,
A main body that is formed in a hollow cylindrical shape and accommodates a valve core therein, in which air injected from one end side is discharged from the other end side, and has a male screw on the outer peripheral surface near the other end;
A body having a hollow cylindrical elastic member with a diameter slightly larger than the diameter of the valve mounting hole, and having a flange at the base end;
It is formed of a cylindrical female screw member having an inner peripheral surface that is screwed into the male screw with an outer diameter slightly smaller than the valve mounting hole, and the cylindrical direction of the cylindrical portion is the cylindrical direction of the barrel portion. An internal female screw part provided internally,
The body is pushed from the tip side into the valve mounting hole while being elastically deformed, the body is fitted into the valve mounting hole, and the male screw of the valve body is screwed into the internal female screw. By moving the internal female screw portion in the direction opposite to the insertion direction, the side surface portion of the body portion is between the inner surface of the wheel around the valve mounting hole and the internal female screw portion. An air valve for tubeless tires, characterized by inflating the part outward. 6. The tubeless tire air valve according to claim 5, wherein the valve main body includes a flange portion formed integrally with the valve main body at a central portion in a longitudinal direction thereof.

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