WO2011048708A1

WO2011048708A1 - Tire wheel with double structure and method of mounting same

Info

Publication number: WO2011048708A1
Application number: PCT/JP2009/068639
Authority: WO
Inventors: 池田一博
Original assignee: Ikeda Kazuhiro
Priority date: 2009-10-23
Filing date: 2009-10-23
Publication date: 2011-04-28
Also published as: JPWO2011048708A1; JP4635111B1

Abstract

A core type tube-less tire which, even if the tire is punctured during travel of the vehicle, enables the driver to perform a certain degree of control of the steering wheel and which can be easily mounted to a wheel. A wheel (10) is provided, on the outer periphery thereof, with a flange (11) to which bead sections of a tube-less tire are mounted and also with a containing space (12) having a smaller diameter than the outer peripheral edge. A tire wheel is provided with a rim valve for adjusting the air pressure in the tube-less tire, a second rim valve for adjusting the air pressure in an inner tire (40), and the inner tire (40) having a second engaging shape (41) formed near the bottom of the inner tire. The wheel (10) can be divided into an outer wheel body (20) and an inner wheel body (30), and when the outer and inner wheel bodies are joined together, a first engaging shape (11) is formed on a rim surface. When the divided wheel body (10) is joined together, the second engaging shape (41) of the inner tire (40) and the first engaging shape (11) which is formed by the joining are engaged with each other with the inner tire (40) sandwiched between the wheel bodies, and thus the inner tire (40) is fixed.

Description

Tire wheel having double structure and method of attaching the same

The present invention relates to a tire wheel having a double structure. For example, the present invention is applied to tires for automobiles such as passenger cars, trucks and buses, motorcycles such as motorcycles, and tires for airplanes and special vehicles. In particular, the present invention relates to a tire wheel having a double structure that facilitates steering control to some extent until a vehicle stops when a tire mounted while the vehicle is running.

Tubeless tires are the mainstream of automobile tires. The basic structure of the tubeless tire is as shown in FIG. A pair of sidewalls 2 are provided in the radial direction of the tire from both ends of the tread 1 formed in an annular shape, and end portions thereof are bead paces 3 to which a wheel 5 having a rim valve 4 is attached. .
In the case of the conventional tubeless tire as shown in FIG. 21, when the tire is punctured during traveling, the vehicle body is tilted due to the vehicle load due to the escape of air, and the steering operation becomes difficult, and the braking action is not effective. It has been pointed out.
In view of the above problems, various run-flat tires that are devised so as to be able to run a fixed distance even if punctured are known in the prior art. Here, the run-flat tire is a tire that can travel a certain distance even if the tire pressure is reduced due to a decrease in tire air pressure due to puncture.
As a conventional first run-flat tire, there is a sidewall-reinforced run-flat tire that thickens the sidewall of the tire and temporarily supports the vehicle weight by the structural strength of the sidewall at the time of puncture.
However, the sidewall-reinforced run-flat tires increase the structural strength by thickening the sidewalls that play a role in absorbing vibration from the road surface. In addition, there is a drawback that the weight of the main part becomes heavy at the expense of fuel consumption.
As a conventional second run-flat tire, there is a core-type run-flat tire in which a ring-shaped core is mounted inside the tire and the vehicle weight is temporarily supported by the structural strength of the core at the time of puncture.
Japanese Patent Application Laid-Open No. 7-276931, Japanese Patent Application Laid-Open No. 2002-096613 and the like disclose the technology of this core type run flat tire. In the case of this core type run-flat tire, since the vehicle body is temporarily supported by the core at the time of puncture, naturally the diameter of the core needs to be larger than the diameter of the wheel.
JP-A-7-276931 JP 2002-096613 A

The core-type run-flat tire is intended to allow a certain degree of steering control until the vehicle stops even when the tire mounted while the vehicle is running as described above.
However, it has been pointed out that the conventional tire-type run-flat tire is difficult to install.
Even if it is a normal tubeless tire, it is never easy to fit the tire into the wheel, but in the case of a core type run flat tire, there is a core with a large diameter around the wheel Therefore, it is difficult to mount the tubeless tire by inserting the core into the wheel and then mounting it on the outside in the normal mounting procedure.
When the core and the outer tubeless tire are idle, it is not easy to put them on the wheel and fix the core to the wheel later.
According to Japanese Patent Application Laid-Open No. 7-276931, the mounting procedure from the stage when the tubeless tire is not mounted on the wheel is not shown at all, and the drawings shown are the tubeless tire on the wheel, the core, and the outside. Only the cross-sectional structure of the upper half.
Next, Japanese Laid-Open Patent Publication No. 2002-096613 recognizes that it is difficult to attach a tubeless tire to the outside from the stage where the core is attached to the wheel, and points out the problem. Yes. In the technology of Japanese Patent Application Laid-Open No. 2002-096613, the core is not formed as a single ring-shaped object, but is formed in advance by dividing the whole into 2 to 6 equal parts. The inner peripheral surface of the core is fixed to the wheel.
The mounting method disclosed in Japanese Patent Application Laid-Open No. 2002-096613 was divided into the inclined parts by fitting one side of the wheel to the tire and then tilting the wheel slightly to face the tire. This is a method in which a single core is mounted, and the procedure of mounting the core is repeated after the wheel of another part is taken out, and the core is sequentially mounted in the tire. The core is fixed to the wheel with bolts.
However, in reality, the outer tubeless tire is mounted closely so that air does not leak through the bead, and there is almost no gap even when the tubeless tire is temporarily fitted into the wheel, so there is room to insert the core. There is no. Even if a core that can be inserted through a slight gap is prepared, the core will be a thin plate, and the structural strength will be extremely weak, so that it will be unusable. For this reason, the technology disclosed in Japanese Patent Application Laid-Open No. 2002-096613 has a structural strength that allows the steering wheel to be controlled to some extent when the tires that are actually worn are punctured. Can not provide.
In view of the above problems, the present invention is a tubeless tire having a double structure provided with an inner tire that allows a handle control to some extent even when the tire mounted during vehicle traveling is punctured, and It is an object of the present invention to provide a tubeless tire that can be easily mounted on a wheel and a simple mounting method of an inner tire on a wheel.

In order to achieve the above object, a tire wheel having a double structure according to the present invention includes a bead seat for attaching a bead portion of a flange and a tubeless tire, and a wheel having a storage space provided in a well having a smaller diameter than the flange. A partial shape of the inner tire, comprising: an inner tire that can be stored in the storage space; a first rim valve that adjusts the air pressure of the tubeless tire; and a second rim valve that adjusts the air pressure of the inner tire. Is a second fitting shape that fits with the first fitting shape on the wall surface of the storage space, and the inner tire is wheeled by fitting the first fitting shape and the second fitting shape. In the tire wheel with a double structure fixed to the
The wheel includes an outer ring wheel body and an inner ring wheel body that are divided so as to divide the storage space into an outer ring side and an inner ring side, and the storage space is formed by combining the outer ring wheel body and the inner ring wheel body in a divided state. In this case, the tire wheel has a double structure characterized in that the first fitting shape and the second fitting shape of the inner tire are fitted and fixed.
Here, there may be several structures for the structure of dividing the outer ring wheel body and the inner ring wheel body and the structure when the shaft and the wheel are attached.
In the first structure, the outer ring wheel body and the inner ring wheel body are formed with respect to the outer ring wheel body joint portion and the inner ring wheel body joint portion that form a boundary surface when the outer ring wheel body and the inner ring wheel body are joined. When the outer ring wheel body joint portion and the inner ring wheel body joint portion are fastened by a wheel fastener during the union, and when the tire wheel is attached to the shaft of the vehicle body, the outer wheel body joint portion is attached to the shaft from the inner ring wheel body side. The shaft is in contact with the inner ring wheel body joint, and the outer ring wheel body joint, the inner ring wheel body joint, and the shaft are fastened by a shaft fastener.
For example, the wheel body is divided into an outer ring wheel body and an inner ring wheel body, and both have discs as their joints, and the outer ring wheel body and the inner ring wheel body can be divided by fastening the disks with a wheel fastener. There is something to unite. In this case, since the shaft abuts against these discs, the shaft is fastened to the discs with a shaft fastener.
As one variation of the first structure described above, the outer ring wheel body joint portion and the inner ring wheel body joint portion form a boundary surface when the outer ring wheel body and the inner ring wheel body are merged. A hole larger than the shaft diameter is opened in the joint portion of the body, and a part of the joint portion of the inner ring wheel body can be seen from the hole when viewed from the outer wheel body side. In this structure, when the outer ring wheel body and the inner ring wheel body are combined, the outer ring wheel body joint portion and the inner ring wheel body joint portion are fastened by a wheel fastener, but are attached to the shaft from the inner ring wheel body side. Then, the shaft comes into contact with the inner ring wheel body joint portion, but the shaft fastener can be fastened by only the two members of the inner ring wheel body joint portion and the shaft through the aforementioned hole of the outer ring wheel body. possible.
Next, as another variation of the first structure, a boundary surface is formed when the outer ring wheel body and the inner ring wheel body are merged by the outer ring wheel body joint portion and the inner ring wheel body joint portion. A hole larger than the shaft diameter is opened in the joint portion of the inner ring wheel body, and the outer ring wheel body joint portion and the inner ring wheel body joint portion are wheel fasteners when the outer ring wheel body and the inner ring wheel body are combined. However, when the shaft is attached to the shaft from the inner ring wheel body side, the shaft comes out of the hole of the inner ring wheel body and directly contacts the joint portion of the outer ring wheel body. There may be a structural example in which the shaft fastener can be fastened by the outer wheel body joint and the shaft.
Next, the second structure includes the outer ring wheel body and the inner ring with respect to the outer ring wheel body joint portion and the inner ring wheel body joint portion that form a boundary surface when the outer ring wheel body and the inner ring wheel body are combined. When the wheel bodies are combined, the outer ring wheel body joint portion and the inner ring wheel body joint portion are fastened by a wheel fastener, and when the tire wheel is attached to the shaft of the vehicle body, the shaft from the inner ring wheel body side is attached. The shaft passes through the inner ring wheel body joint portion and the outer ring wheel body joint portion, contacts the inner side of the outer surface portion of the outer wheel body, and the outer surface portion of the outer wheel body and the shaft. Is a structure fastened by a shaft fastener.
In this structure, the tip of the shaft passes through the center portion of the tire wheel and reaches the inside of the outer surface portion of the wheel, that is, the back side of the plate forming the outer surface of the tire wheel, and the outer surface portion surface of the outer ring wheel body. It is a type that is fastened with fasteners such as bolts and nuts. In the present invention, in this type of tire wheel, the wheel body is divided into two parts, an outer wheel body and an inner wheel body, and the outer wheel body and the inner wheel body are combined so as to sandwich the inner tire, and It has a structure that does not interfere with the shaft penetration.
In addition, as a raw material of an inner tire, it is a raw material which has a swellability, for example, there existed what mix | blended the structural reinforcement | strengthening raw material, etc. with any of rubber | gum, a plastics, a fiber, those combinations. The inner tire is inflatable and can be inflated inside the tubeless tire by injecting air into the inner tire through the second rim valve until it reaches the specified air pressure. It is preferable that the diameter of the inner tire be larger than the diameter of the flange.
With the above configuration, the diameter of the inner tire is larger than the diameter of the flange, and it is possible to temporarily prevent the flange from hitting the road surface when the tubeless tire is punctured. As a result, the tilt of the vehicle body is reduced, and the steering wheel operation at the time of puncture becomes relatively easy.
In addition, as a structure of the inflatable inner tire, for example, there is a structure in which a material having elasticity is adopted as the material of the inner tire and the inflatable is inflated by filling with air. Further, for example, there is a structure in which a hard material such as hard rubber is intermittently provided on the surface of a stretchable material so that the material can be folded by a so-called bellows method, and inflated by filling with air. . In addition, there is a structure in which a soft material (for example, a reinforcing fiber material such as glass fiber) that does not have elasticity is used as the material of the inner tire and is inflated by filling with air from a state where the air is removed and deflated. In any structure, the air can be expanded by blowing air from the second rim valve, and the diameter when expanded may be larger than the flange diameter.
In addition, the tire wheel provided with the double structure of the present invention may be sold as a tire wheel with a tube tire mounted on the wheel, and only the wheel used for the tire wheel having the double structure of the present invention is used. Can also be sold alone.
In addition, the tire wheel can be mounted on various vehicles such as tires of automobiles such as passenger cars, trucks, and buses, motorcycles such as motorcycles, airplanes, and special vehicles. That is, the present invention can be supplied in the form of various vehicles such as automobile tires such as passenger cars, trucks, buses and the like, motorcycles such as motorcycles, and aircrafts and special vehicles equipped with the above tire wheels. These vehicles can be the subject of the patent of the present invention.
Next, a method for attaching a tire wheel having a double structure according to the present invention includes a bead seat for attaching a bead portion of a flange and a tubeless tire, a wheel having a storage space provided in a well having a smaller diameter than the flange, and An inner tire that can be stored in the storage space; a first rim valve that adjusts the air pressure of the tubeless tire; and a second rim valve that adjusts the air pressure of the inner tire. A second fitting shape that fits with the first fitting shape of the wall surface of the storage space. By fitting the first fitting shape and the second fitting shape, the inner tire is turned into a wheel. A mounting method of a tire wheel having a double structure to be fixed,
The wheel is divided into an outer ring wheel body and an inner ring wheel body so that the storage space is divided into an outer ring side and an inner ring side, and the divided outer ring wheel body and the inner ring wheel body are combined to form the storage space. In this case, the mounting method is characterized in that the first fitting shape and the second fitting shape of the inner tire are fitted and fixed.
With the above configuration, a simple mounting method for an inner tire having a diameter smaller than the lunge diameter can be established, and a practical tire wheel can be obtained.

FIG. 1 is a diagram schematically showing a basic configuration of a tire wheel having a double structure according to a first embodiment of the present invention.
FIG. 2 is a view showing a method of attaching the inner tire in the tire wheel shown in FIG.
FIG. 3 is a diagram schematically showing the cross-sectional structure of the inner tire 40, the cross-sectional structure of the wheel body 10, and further the division of the wheel body, the uniting, and the fixing procedure of the inner tire 40 in a portion where there is no valve.
FIG. 4 is a diagram schematically showing the cross-sectional structure of the inner tire 40, the cross-sectional structure of the wheel body 10, and the division of the wheel body, the uniting, and the fixing procedure of the inner tire 40 in a portion where the valve is present.
FIG. 5 is a diagram showing a procedure for mounting the tubeless tire 50 of the wheel body 10 and a procedure for inflating the inner tire.
FIG. 6 is a view (No. 1) showing a procedure for attaching the tire wheel 100 to the shaft 60 in the case of Type 1. FIG.
FIG. 7 is a diagram (No. 2) showing a procedure for attaching the tire wheel 100 to the shaft 60 in the case of type 1. FIG.
FIG. 8 is a view (No. 1) showing a procedure for attaching the tire wheel 100 to the shaft 60 in the case of type 2. FIG.
FIG. 9 is a diagram (part 2) illustrating a procedure for attaching the tire wheel 100 to the shaft 60 in the case of type 2. FIG.
FIG. 10 is a diagram for explaining the effect when the tire is punctured.
FIG. 11 is a view showing the structure of the tire wheel of Example 2 in a longitudinal section.
FIG. 12 is a longitudinal sectional view showing the structure of the tire wheel of Example 3.
FIG. 13 is a diagram schematically illustrating the basic configuration of the wheel 10a of the tire wheel 100a according to the fourth embodiment.
FIG. 14 is a diagram (part 1) illustrating the structure of the inner tire 40 and the method for attaching the inner tire 40 according to the fourth embodiment.
FIG. 15 is a diagram (part 2) illustrating the structure of the inner tire 40 and the method for attaching the inner tire 40 according to the fourth embodiment.
FIG. 16 is a diagram showing a procedure for attaching the tubeless tire 50 to the wheel body 10a and inflating the inner tire 40. FIG.
FIG. 17 is a view (No. 1) showing a procedure for attaching the tire wheel 100a to the shaft 60 in the case of type 1. FIG.
FIG. 18 is a diagram (No. 2) showing a procedure for attaching the tire wheel 100a to the shaft 60 in the case of type 1. FIG.
FIG. 19 is a view (No. 1) showing an example of a vehicle to which a tire wheel having a double structure of the present invention is applied.
FIG. 20 is a diagram (No. 2) showing an example of a vehicle to which a tire wheel having a double structure of the present invention is applied.
FIG. 21 is a view showing a basic structure of a conventional tubeless tire.

Hereinafter, the best mode for carrying out the present invention will be described specifically by way of examples. The present invention is not limited to these examples.
The “tire wheel” of the present invention can be widely applied to automobile tires such as passenger cars, trucks and buses, motorcycles such as motorcycles, tires for airplanes and special vehicles. In the following embodiments, passenger car tires will be described as an example, but the present invention is applied to tires for trucks, buses, motorcycles, and other special vehicles.
In the following description, the rim refers to a circumferential wall surface portion of the wheel, and the wheel includes an outer ring wheel body, an inner ring wheel body, and an inner tire. A tire wheel is a whole of which a tubeless tire is mounted on a wheel.

As the tire wheel having the dual structure of the first embodiment, the wheel can be divided into an outer ring wheel body and an inner ring wheel body, and the inner tire is fitted and fixed while combining the divided outer ring wheel body and inner ring wheel body. Of the structure, when the tire wheel is attached to the shaft of the vehicle body, the shaft abuts on the inner ring wheel body joint, and the outer wheel body joint, the inner wheel body joint, and the shaft are fastened by the shaft fastener. An example structure is shown.
FIG. 1 is a diagram schematically illustrating a basic configuration of a wheel of a tire wheel according to a first embodiment. FIG. 2 is a view showing a method of attaching the inner tire in the tire wheel shown in FIG. Note that the mounting procedure is an example, and the detailed procedure such as attachment to the bead portion is not shown.
FIG. 1 shows an overview of a wheel 10 of a tire wheel having a double structure according to the present invention. FIG. 1 (A) is a front view, FIG. 1 (B) is a side view, and FIG. 1 (C) is a second view. FIG. 1D is a vertical cross-sectional view of the portion where the second rim valve is present. FIG. 1E is a development view of the wheel 10. FIG. 2 (A) shows an example of the storage space of the present invention, FIG. 2 (B) shows the outer shape of a conventional wheel, and is a diagram comparing the wheel storage space of the present invention in an easy-to-understand manner. Illustration of other structures provided in a normal wheel is omitted.
In this figure, the front side is the outer ring side of the tire wheel, and the left side is the outer ring side and the right side is the inner ring side in the side view. That is, in FIG. 1 (E), the left and right divided wheels are the outer wheel body 20 on the left side and the inner wheel body 30 on the right side.
In the configuration example of Example 1, the wheel body 10 is divided into an outer ring wheel body 20 and an inner ring wheel body 30, and both the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34 are disks, The disks are fastened with the

wheel fasteners

13a and 13b, and the outer ring wheel body and the inner ring wheel body are combined so as to be split. In this case, as will be described later, since the shaft 60 abuts against the inner ring wheel body joint portion 34, the shaft 60 is fastened with the disc and the shaft fastener 61. This example is an application example to a wheel of a type in which a wall surface structure that supports a wheel body in the vertical direction is provided in the vicinity of the center.
As shown in FIG. 1 (A) to FIG. 1 (E), the wheel 10 in the present invention has a configuration of an outer ring wheel body 20, an inner ring wheel body 30, and an inner tire 40, and further shown in FIG. 2 (A). Thus, in the state where the outer ring wheel body 20 and the inner ring wheel body 30 are combined, the first fitting shape 11 provided on the rim surface, the storage space 12 for storing the inner tire 40 is formed, and others Are provided with

wheel fasteners

13a and 13b, a first rim valve 14, a second rim valve 15, and the like for fastening the outer ring wheel body 20 and the inner ring wheel body 30 to each other.
The outer ring wheel body 20 includes a flange 21 forming an outer peripheral edge, a hole 22 for attaching a shaft fastener 61 to be described later, a hole 23 for attaching the wheel fastener 13, and the outer ring wheel body 20 and the inner ring wheel body 30. The outer ring wheel body joint part 24 which forms the boundary surface at the time is provided.
In this example, the first rim valve 14 for adjusting the air pressure of the tubeless tire 50 mounted on the wheel 10 and the second rim valve 15 for adjusting the air pressure of the inner tire 40 described later are provided on the outer wheel body 20 side. Is provided.
The inner ring wheel body 30 includes a flange 31 that forms an outer peripheral edge, a hole 32 for attaching a shaft fastener 61 described later, and an inner ring wheel body joint that forms a boundary surface when the outer ring wheel body 20 and the inner ring wheel body 30 are combined. Part 34 is provided. In this configuration example, the wheel fastener 13b is provided so as to protrude from the inner ring wheel body 30, and is a so-called bolt. As will be described later, it is fastened with a wheel fastener 13a corresponding to a nut.
The outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34 are disk-shaped wall surfaces that are joined together and fastened together by the

wheel fasteners

13a and 13b.
In order to strengthen the joining force between the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34, the boundary surface between the two is unevenly meshed with each other, or a projection shape such as a claw is provided on one side and the other is provided on the other side. It is possible to increase the joining force between the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34, for example, by providing a receiving shape that fits with the protrusion and fitting the both.
FIG. 2A is a view showing the inner tire 40 not shown in a state where the outer ring wheel body 20 and the inner ring wheel body 30 are combined. FIG. 2B is a view showing a conventional wheel body for comparison.
As shown in FIG. 2 (A), the first fitting shape 11 is a shape provided on the rim surface of the wheel 10, and in this example, it has a cross-sectional shape as shown in FIG. 1 (A). . In this example, there are grooves and protrusions, which are so-called reverses, and after the second fitting shape 41 of the inner tire is fitted into the first fitting shape 11 as will be described later, it is easy. It is something that cannot be escaped. Note that the cross-sectional shape of the first fitting shape 11 is not limited to that shown in FIG.
The storage space 12 is configured by dropping (shaving) the inner diameter of a conventional well, and is provided as a storage space for the inner tire 40. Since the inner diameter of the well is lowered, a large storage space can be secured as compared with the conventional wheel rim as shown in FIG. The range of the storage space 12 is hatched. An inner tire 40 is stored in the storage space 12.
The wheel fastener 13 is a fastener for fastening the outer wheel body joint 24 and the inner wheel body joint 34 when the outer wheel body 20 and the inner wheel body 30 are combined. In this example, a so-called bolt and nut are used for fastening, and the inner ring wheel body joint portion 34 is provided with a wheel fastener 13b corresponding to a bolt, and the outer ring wheel body joint portion 24 is provided with a wheel fastener. The hole 23 through which 13b passes is provided, and it fastens with the wheel fastener 13a applicable to a nut from the outer ring | wheel side of the outer ring wheel body junction part 24. FIG.
In this example, three wheel fasteners 13 are provided, but the number is not limited.
The first rim valve 14 and the second rim valve 15 may be structurally similar to normal rim valves, and detailed illustration thereof is omitted. However, the air insertion port of the first rim valve 14 is the tubeless tire 50. The air insertion port of the second rim valve 15 is led to a position where the air pressure inside the inner tire 40 described later can be adjusted.
FIG. 3A and FIG. 4A are views showing the inner tire 40 taken out. 3A is a vertical cross-sectional view of a portion where the second rim valve 15 is not provided, and FIG. 4A is a vertical cross-sectional view of a portion where the second rim valve 15 is provided.
The inner tire 40 is made of a material having some elasticity and structural strength, has a ring-shaped bag structure, and swells when filled with a gas such as air. Examples of the material include thin reinforced rubber, reinforced plastic, reinforced fiber, and the like, and glass fiber, titanium, or the like may be blended to further improve the structural strength.
The inner tire 40 is manufactured to have a size that can be accommodated in the storage space 12 in a contracted state. The inner tire 40 is inflated by being filled with air or the like by the second rim valve 15, and the inner tire 40 becomes the core of the wheel 10.
As shown in FIG. 3A, the inner tire 40 is provided with a second fitting shape 41. In this example, it is provided near the bottom. For example, the second fitting shape 41 is made of a thick and strong rubber material, and is devised so that it can be fixed by being engaged with and engaged with the first fitting shape 11 and cannot be removed even by centrifugal force. ing. In this manner, the inner tire 40 is fixed to the bottom of the storage space 12 of the wheel 10 in a contracted state.
3 (B), 3 (C), 4 (B), and 4 (C) are diagrams showing a method of attaching the inner tire 40. FIG. 3 (B) and 3 (C) show the fixing method of the inner tire 40 in the longitudinal sectional view of the portion where the second rim valve 15 is not provided. FIGS. 4 (B) and 4 (C) The method for fixing the inner tire 40 is shown in a longitudinal sectional view of a portion where the second rim valve 15 is present.
First, as shown in FIGS. 3B and 4B, the wheel body 10 is divided into an outer ring wheel body 20 and an inner ring wheel body 30.
Next, as shown in FIG. 3 (C) and FIG. 4 (C), the inner tire with respect to the first fitting shape 11 formed on the rim surface while matching the outer ring wheel body 20 and the inner ring wheel body 30. The two second fitting shapes 41 are sandwiched and fitted together, and the two are combined.
In addition, in the fitting of the portion where the second rim valve 15 is provided in the inner tire 40, the mouth needs to be exposed to the outside through the wall surface of either the outer ring wheel body 20 or the inner ring wheel body 30. In this example, as shown in FIG. 4 (C), a hole through which the second rim valve 15 passes (not shown) is formed on the outer ring wheel body 20 side, and the second rim valve 15 is passed through this hole. As shown in (C), the outer ring wheel body 20 and the inner ring wheel body 30 are fitted while the inner tire 40 is sandwiched with the second rim valve 15 being exposed to the outer surface.
Next, after the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34 are combined, as shown in FIGS. 3 (C) and 4 (C), the wheel fastener 13a is secured to secure the both. , 13b.
Next, a method for attaching the tubeless tire 50 to the wheel body 10 and inflating the inner tire 40 will be described.
Hereinafter, the description of the air pressure filled in the inner tire 40 and the air pressure filled in the tubeless tire 50 is an example, and does not limit the technical scope of the present invention.
FIG. 5 is a diagram showing a procedure for attaching the tubeless tire 50 to the wheel body 10 and inflating the inner tire 40.
In FIG. 5, the outline of the tubeless tire 50 is indicated by a solid line, and the internal cross-sectional outline is indicated by a dotted line. The internal cross-sectional schematic shape is also shown for easy understanding of the outline of the mounting relationship of the wheel 10.
First, as shown in the left side of FIG. 5A, the wheel body 10 is inserted into the tubeless tire 50. A bead portion (not shown) of the tubeless tire 50 is attached to a bead seat (not shown) of the wheel body 10 by a conventional method (details are not shown). The shape and structure of the bead portion of the tubeless tire 50 and the bead seat of the wheel 10 may be the same as the conventional one.
At this time, the inner tire 40 is contracted and stored in the storage space 12, and the diameter of the inner tire 40 is reduced. Therefore, the height of the inner tire 40 is the flange 31 of the inner ring wheel body 30, the outer ring wheel. It is lower than the height of the flange 21 of the body 20. If it is in this state, as shown to the right figure of FIG. 5 (A), mounting | wearing will become possible according to the conventional normal procedure.
By passing the tubeless tire 50 through the wheel body 10, the tubeless tire 50 and the wheel body 10 are closely fitted via the bead portion as shown in the right figure of FIG. 5A, and the inside of the tubeless tire 50 is sealed. The However, at this stage, the first rim valve 14 is opened, the inside of the tubeless tire 50 communicates with the outside air, and the air pressure is the same as the outside air pressure.
Next, as shown in FIG. 5B from the left to the right, the inner tire 40 is inflated and deployed inside the tubeless tire 50 (first procedure).
The expansion of the inner tire 40 is performed via the second rim valve 15. The second rim valve 15 allows the outside air and the inside of the inner tire 40 to pass through, and has a mechanism capable of adjusting the air pressure inside the inner tire 40 by controlling the air flow and the opening and closing of the valve. . The air pressure inside the inner tire 40 is increased via the second rim valve 15, and the inner tire 40 is inflated and deployed inside the tubeless tire 50. After inflating the inner tire 40, the second rim valve 15 is closed to seal the inner tire 40, and the inflated state of the inner tire 40 is maintained and fixed. When the inner tire 40 is inflated, its diameter is larger than the diameter of the flange 11 and is a size that can function as a core of a tire having a double structure.
At this stage, the air pressure inside the tubeless tire 50 is the same as the outside air pressure because the first rim valve 14 is opened.
Next, the air pressure of the tubeless tire 50 is adjusted. The air pressure inside the tubeless tire 50 is adjusted via the first rim valve 14, and then the first rim valve 14 is closed to seal the tubeless tire 50 (second procedure).
If the tubeless tire 50 is filled with air until the internal pressure of the tubeless tire 50 reaches a predetermined air pressure, the tubeless tire 50 expands to a normal use state, and becomes suitable for traveling of the vehicle.
Note that, as the first procedure, the inner pressure of the inner tire 40 is first adjusted to a predetermined pressure by the second rim valve 15 as the first procedure, and then the tubeless tire is operated by the first rim valve 14 by the second procedure. The internal pressure of 50 is adjusted to a predetermined pressure. According to this two-step procedure, the amount of air filled in the inner tire 40 can be set to an appropriate amount for the inner tire 40 to maintain its bulge as a core during puncture.
The reason is as follows. When the outer tubeless tire 50 is punctured, the air pressure in the tubeless tire 50 suddenly drops from the predetermined pressure to the external air pressure. If the inner tire 40 cannot withstand expansion due to its own internal pressure, the inner tire 40 also bursts together. End up. In the above procedure, when the inner pressure of the inner tire 40 is first adjusted to the predetermined pressure by the second rim valve 15, the tubeless tire 50 is at the external pressure, and the amount of air filled in the inner tire 40 is the external pressure. This is because the amount is appropriate for swelling appropriately.
When the tubeless tire 50 is raised to a predetermined pressure via the first rim valve 14 by the second procedure, the inner tire 40 is also pressed and raised to the predetermined pressure, and the inner tire 40 itself is slightly deflated. However, in this slightly deflated state, when the internal pressure of the tubeless tire 50 suddenly drops to the external pressure at the time of puncture, it can swell firmly with its own internal pressure, and can play the role of a core.
Next, a method for attaching the tire wheel 100 of the present invention to the shaft will be described.
Currently, there are generally at least two types of methods for attaching the tire wheel and the shaft, the bolt comes out of the shaft, the type 1 that is fastened with a nut from the outer side of the tire wheel, and the shaft has a hole, There is a type 2 in which a bolt is driven from the outer side of the tire wheel and is fastened with a nut from the inside of the shaft.
First, the attachment procedure in the case of type 1 will be described.
FIGS. 6 and 7 are diagrams showing a procedure for attaching the tire wheel 100 to the shaft 60 in the case of type 1 described above.
As shown in FIGS. 6A to 6B, the tire wheel 100 is attached to the bolt 61 b protruding from the shaft 60. The inner ring wheel body 30 has a hole 32, the outer ring wheel body 20 has a hole 22, and a bolt 61 passes through the hole 32 and the hole 22.
Next, as shown in FIGS. 7A to 7B, a nut 61a is attached to a bolt 61b from the outer surface side of the outer ring wheel body 20 and fastened. In addition, although a number is not limited, For example, it is good also as a 5 or 6 fastening location.
The right figure of FIG.7 (B) is the figure which showed an example of the completion state of the tire wheel 100 provided with the double structure obtained by filling air with the said procedure.
Next, the attachment procedure in the case of type 2 will be described.
FIGS. 8 and 9 are diagrams showing a procedure for attaching the tire wheel 100 to the shaft 60 in the case of type 2 described above.
First, as shown in FIGS. 8A to 8B, the tire wheel 100 is applied to the shaft 60. In this state, adjustment is made so that the position of a hole (not shown) provided at the tip of the shaft corresponds to the position of the hole 22 of the outer ring wheel body 20 and the hole 32 of the inner ring wheel body 30.
Next, as shown in FIGS. 9A to 9B, the bolt 61b is driven from the outer ring side of the outer ring wheel body 20. The shaft 60 and the tire wheel 100 are firmly fixed by receiving and fastening with the nut 61a inside the shaft.
The right figure of FIG.9 (B) is the figure which showed an example of the completion state of the tire wheel 100 provided with the double structure obtained by filling with air by the said procedure.
Next, the effect when the outer tubeless tire 50 is punctured will be described.
The left side of FIG. 10 shows a normal state, the center shows a state in which the tubeless tire 50 of the present invention is punctured, and the right side shows a state in which the conventional tubeless tire 50 is punctured.
When the tubeless tire 50 is punctured, the tubeless tire 50 is torn and the vehicle weight cannot be supported and the vehicle body falls. However, the greater the vehicle body drop, the more difficult the steering operation becomes and the greater the risk. In the conventional tire wheel, the vehicle body falls from the state before the puncture in the left diagram of FIG. 10 to the state after the conventional puncture in the right diagram of FIG. That is, the height is lowered by B, which causes a very dangerous state. On the other hand, in the case of the present invention, since the vehicle weight is temporarily supported by the inner tire 40, the tire wheel 100 of the present invention of the center of FIG. 10 is adopted from the state before the puncture of the left of FIG. The car body will drop to the state after puncture. That is, the height A is lowered. As is apparent from the comparison of the height at which the vehicle body falls, the conventional tire wheel falls by height B, whereas the tire wheel 100 of the present invention only falls by height A, so even during puncture. Less sagging and safer.
It should be noted that the structural strength of the inner tire 40 that becomes the core during puncture will be described. Even if the outer tubeless tire 50 is punctured, it is not completely torn and remains around the wheel temporarily. At this time, the inner tire 40 functions like a kind of tube for the outer tubeless tire 50. In other words, although it is temporary, it works like a tube tire. The outer tubeless tire 50 and the inner tire 40 allow the vehicle to travel like a tube tire if it is not a long time run but a short run until it stops. The present invention aims at this effect.
Next, the procedure for tire replacement will be described. As a feature of the present invention, it is possible to replace only the outer tubeless tire 50 when the outer tubeless tire 50 is worn and needs to be replaced. In the case of a conventional run flat tire, it is necessary to replace the entire run flat tire even when the outer tubeless tire 50 is worn. In the present invention, since the outer tubeless tire 50 and the inner tire 40 are separated, only the outer tubeless tire 50 needs to be replaced.
The first removal procedure may be removed by the procedure shown in FIGS. 6 to 7 or the reverse procedure of the procedure shown in FIGS.
As mentioned above, although the structural example of the tire wheel provided with the double structure concerning Example 1 of this invention was shown, the said structure is an example and a various change is possible.

As the tire wheel having the double structure of the second embodiment, the wheel can be divided into an outer ring wheel body and an inner ring wheel body, and the inner tire is fitted and fixed while combining the divided outer ring wheel body and inner ring wheel body. In the structure, when the tire wheel is attached to the shaft of the vehicle main body, the shaft contacts the inner ring wheel body joint, and the inner ring wheel body joint and the shaft are fastened by the shaft fastener. .
The example of the second embodiment is a variation of the first embodiment. In the configuration example of the first embodiment, the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34 are disk-shaped wall surfaces, and the shaft 60 is in contact with the inner ring wheel body joint portion 34 and is fastened by the

wheel fasteners

61a and 61b. The outer ring wheel body joint portion 24, the inner ring wheel body joint portion 34, and the shaft 60 are fastened. In the second embodiment, a hole 25 is opened at the center of the outer ring wheel body joint portion 24, and the wheel fastener 61a. 61b, the inner wheel body joint 34 and the shaft 60 are fastened together.
FIG. 11 is a view showing the structure of the tire wheel of Example 2 in a longitudinal section. The attachment to the shaft is described as the type 1 of the first embodiment. As shown in FIG. 11A, the outer ring wheel joint 24 is provided with a hole 25 in the center. 11A, when the tire wheel 100a is attached to the shaft 60 with respect to the shaft 60, the shaft 60 is the same as in FIGS. 6A and 8A of the first embodiment. The tip of the abutment comes into contact with the inner ring wheel body joint 34.
Next, as shown in FIG. 11B from the left to the right, the wheel fastener 61a that is a nut from the outer ring side of the outer ring wheel body 20 is attached to the wheel fastener 61b that protrudes from the tip of the shaft 60. Install. That is, as shown in FIG. 11 (B), two members, the inner ring wheel body joint portion 34 and the shaft 60, are fastened by the wheel fastener 61.
As mentioned above, although the structural example of the tire wheel provided with the double structure concerning Example 2 of this invention was shown, the said structure is an example and a various change is possible.

As a tire wheel having the double structure of the third embodiment, the wheel can be divided into an outer ring wheel body and an inner ring wheel body, and the inner tire is fitted and fixed while combining the divided outer ring wheel body and inner ring wheel body. Of the structure, when the tire wheel is mounted on the shaft of the vehicle body, the shaft passes through the inner ring wheel body joint and contacts the outer wheel body joint, and the outer wheel body joint and the shaft are fastened by the shaft. The structural example fastened with a tool is shown.
The example of the third embodiment is a variation of the first embodiment. In the configuration example of the first embodiment, the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34 are disk-shaped wall surfaces, and the shaft 60 is in contact with the inner ring wheel body joint portion 34 and is fastened by the

wheel fasteners

61a and 61b. The outer ring wheel body joint portion 24, the inner ring wheel body joint portion 34, and the shaft 60 are fastened. In the third embodiment, a hole 35 is opened at the center of the inner ring wheel body joint portion 34, and the wheel fastener 61a. 61b, the outer ring wheel body joint 24 and the shaft 60 are fastened together.
FIG. 12 is a view showing the structure of the tire wheel of Example 3 in a longitudinal section. The attachment to the shaft is described as the type 1 of the first embodiment. As shown in FIG. 12A, the inner ring wheel joint 34 is provided with a hole 35 in the center. 12A, when the tire wheel 100b is attached to the shaft 60 with respect to the shaft 60, the tip of the shaft 60 passes through the hole 35 of the inner ring wheel body 30 and joins the outer ring wheel body. It will contact the part 24.
Next, as shown in FIG. 12 (B) from the left to the right, the wheel fastener 61a that is a nut from the outer ring side of the outer ring wheel body 20 is attached to the wheel fastener 61b protruding from the tip of the shaft 60. Install. That is, as shown in FIG. 12 (B), the outer ring wheel body joint portion 24 and the shaft 60 are fastened by the wheel fastener 61.
As mentioned above, although the structural example of the tire wheel provided with the double structure concerning Example 3 of this invention was shown, the said structure is an example and a various change is possible.

As a tire wheel having the double structure of the fourth embodiment, the wheel can be divided into an outer ring wheel body and an inner ring wheel body, and the inner tire is fitted and fixed while combining the divided outer ring wheel body and inner ring wheel body. Among the structures, this is an example of application to a type of wheel in which the structure that supports the wheel body in the vertical direction is provided on the outer ring side, and the shaft passes through the inner ring rim body joint and the outer ring rim body joint, and the outer ring rim body This is an example of a structure in which the outer surface portion of the outer ring rim body and the shaft are fastened together by a shaft fastener.
FIG. 13 is a diagram schematically illustrating the basic configuration of the wheel 10a of the tire wheel 100a according to the fourth embodiment. FIG. 13 (A) is a front view, FIG. 13 (B) is a side view, and FIG. ) Is a longitudinal sectional view in a portion where the second rim valve is not provided, and FIG. 13D is a longitudinal sectional view in a portion where the second rim valve is provided. FIG. 13E is a development view of the wheel 10a. Illustration of other structures provided in a normal wheel is omitted.
In this figure, the front side is the outer ring side of the tire wheel, and the left side is the outer ring side and the right side is the inner ring side in the side view. That is, in FIG. 13E, the left wheel is the outer wheel body 20a and the right wheel is the inner wheel body 30a.
In each component, the description of the same part as in the first embodiment is omitted.
As shown in FIG. 13 (A) to FIG. 13 (E), the wheel 10a according to the present invention has a configuration of an outer ring wheel body 20a, an inner ring wheel body 30a, and an inner tire 40, and further includes an outer ring wheel body 20a and A storage space 12 for storing the first fitting shape 11 provided on the rim surface and the inner tire 40 is formed in a state where the inner ring wheel body 30a is combined, and the outer ring wheel body 20 and the inner

ring Wheel fasteners

13 a and 13 b for fastening the wheel body 30, a first rim valve 14, a second rim valve 15, and the like are provided. The first fitting shape 11, the storage space 12, the first rim valve 14, and the second rim valve 15 are the same as those in the first embodiment.
In the configuration example of the fourth embodiment, as shown in FIG. 13C, a wall surface 26 that supports the wheel body 10a in the vertical direction is provided at the outer ring side end of the outer ring wheel body 20a.
The outer ring wheel body 20a has the same flange 21 and hole 22 as those in the first embodiment, but the

wheel fasteners

13a and 13b are not provided on the outer ring side surface of the outer ring wheel, so that the

wheel fasteners

13a and 13b are received. There are no holes 23. Further, in the first embodiment, the outer ring wheel body joint portion 24 is provided on the surface of the outer ring wheel on the outer ring side. However, in the fourth embodiment, the outer ring wheel body joint portion 24 is formed as shown in FIG. It is provided on the side opposite to. Further, as in the second embodiment, the outer ring wheel body joint portion 24 is provided with a hole 25 in the center portion, and the shaft passes through the hole 25. Further, unlike the first embodiment, a wheel fastener 13b corresponding to a bolt is provided on the outer ring wheel body joint portion 24 side.
The inner ring wheel body 30a has the same flange 31 and hole 32 as in the first embodiment, but the hole 32 is provided at a position corresponding to the wheel fastener 13b provided in the outer ring wheel body 20. The inner ring wheel body joint portion 34 is, for example, as shown in FIG. 13C and is opposed to the outer ring wheel body joint portion 24. As in the third embodiment, the inner ring wheel body joint 34 is provided with a hole 35 through which the shaft 60 passes.
The outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34 are disk-shaped wall surfaces having

large holes

25 and 35 in the center, and are combined by combining the two, and the

wheel fasteners

13a and 13b. Both are fixed by fastening with.
In order to strengthen the joining force between the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34, the boundary surface between the two is unevenly meshed with each other, or a projection shape such as a claw is provided on one side and the other is It is possible to devise a method for increasing the joining force between the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34, for example, by providing a receiving shape that fits with the protrusion and fitting the both.
Next, an inner tire 40 and a method for attaching the inner tire 40 will be described.
14 and 15 are diagrams illustrating the structure of the inner tire 40 and a method for attaching the inner tire 40. FIG.
First, the structure of the inner tire 40 is the same as that shown in the first embodiment.
The mounting method of the inner tire 40 is also the same as that of the first embodiment, but the structure of the wheel body 10a of the fourth embodiment is different from that of the wheel body 10 of the first embodiment, and is illustrated for the sake of convenience.
14 (B) and 14 (C) show the fixing method of the inner tire 40 in a longitudinal sectional view of a portion where the second rim valve 15 is not provided. FIGS. 15 (B) and 15 (C) The method for fixing the inner tire 40 is shown in a longitudinal sectional view of a portion where the second rim valve 15 is present. The procedure is basically the same as that shown in the first embodiment.
First, as shown in FIGS. 14B and 15B, the wheel body 10a is divided into an outer ring wheel body 20a and an inner ring wheel body 30a.
Next, as shown in FIG. 14 (C) and FIG. 15 (C), the inner tire with respect to the first fitting shape 11 formed on the rim surface while matching the outer ring wheel body 20a and the inner ring wheel body 30a. The two second fitting shapes 41 are sandwiched and fitted together, and the two are combined.
In addition, in the fitting of the portion where the second rim valve 15 is provided in the inner tire 40, the mouth is exposed to the outside through the wall surface of either the outer ring wheel body 20a or the inner ring wheel body 30a. In this example, as shown in FIG. 15C, there is a hole (not shown) through which the second rim valve 15 passes on the outer ring wheel body 20a side, and the second rim valve 15 is passed through this hole. ), The outer ring wheel body 20a and the inner ring wheel body 30a are fitted while the inner tire 40 is sandwiched with the second rim valve 15 being exposed to the outer surface.
Next, after the outer ring wheel body joint portion 24 and the inner ring wheel body joint portion 34 are combined, as shown in FIGS. 14 (C) and 15 (C), the inner ring wheel body 30a is secured to secure the both. The wheel fastener 13a is fastened and fastened to the wheel fastener 13 protruding to the inner ring side.
14C and 15C are views of the inner ring wheel body 30a viewed from the inner ring side after being fastened by the wheel fastener 13a. A hole 35 for inserting the shaft 60 in the center is greatly opened, and the wall surface 26 of the outer ring end face of the outer ring wheel body 20a can be seen on the other side (not shown).
Next, the procedure for attaching the tubeless tire 50 to the wheel body 10a of the fourth embodiment and inflating the inner tire 40 is the same as that of the first embodiment.
FIG. 16 is a diagram showing a procedure for attaching the tubeless tire 50 to the wheel body 10a and inflating the inner tire 40. FIG.
First, as shown on the left side of FIG. 16A, the wheel body 10 a is inserted into the tubeless tire 50. At this time, the inner tire 40 is contracted and stored in the storage space 12, and the diameter of the inner tire 40 is reduced. Therefore, the height of the inner tire 40 is the flange 31 of the inner ring wheel body 30a, the outer ring wheel. It is lower than the height of the flange 21 of the body 20a. If it is in this state, as shown to the right figure of FIG. 16 (A), attachment will be possible according to the conventional normal procedure.
Thereafter, the procedure for filling the inner tire 40 with air from the second rim valve 15 and the procedure for filling the tubeless tire 50 with air from the first rim valve 14 are the same as in the embodiment.
Next, the attachment method to the shaft 60 of the tire wheel 100a of Example 4 is demonstrated.
Here, the description will be made by taking as an example the type 1 shown in the first embodiment, in which a bolt protrudes from the shaft and is fastened with a nut from the outer side of the tire wheel.
FIGS. 17 and 18 are diagrams showing a procedure for attaching the tire wheel 100a to the shaft 60 in the case of type 1 described above.
As shown in FIGS. 17A to 17B, the tire wheel 100a is attached to the bolt 61b protruding from the shaft 60. The inner ring wheel body 30 a has a hole 35, and the outer ring wheel body 20 has a hole 25, and the shaft 60 passes through them and reaches the back surface of the wall surface 26 on the end surface of the outer ring wheel body 20 to come into contact therewith.
A shaft fastener 61 b corresponding to a bolt is provided at the tip of the shaft 60, a hole 32 is provided in the wall surface 26 on the outer ring end surface of the outer ring wheel body 20, and a tip of the shaft fastener 61 b corresponding to the bolt projects from the wall surface 26. To do.
Next, as shown in FIGS. 18 (A) to 18 (B), a shaft fastener 61a corresponding to a nut is attached to the shaft fastener 61b from the outer surface side of the wall surface 26 of the outer ring wheel body 20 and fastened. In addition, although a number is not specifically limited, For example, it is good also as a fastening location of about five or six.
The right figure of FIG.18 (B) is the figure which showed an example of the completion state of the tire wheel 100a provided with the double structure obtained by filling with air by the said procedure.
As mentioned above, although the structural example of the tire wheel provided with the double structure concerning Example 4 of this invention was shown, the said structure is an example and a various change is possible.

As Example 5, an example of a vehicle to which the

tire wheel

100, 100a, 100c and the like having the double structure of the present invention is applied will be given.
FIG. 19A shows an example applied to a passenger car. The present invention is not limited to the type of vehicle shown in FIG. 19A, and can be applied to tires of a wide variety of vehicles. FIG. 19B shows an example applied to a motorcycle such as a motorcycle. The present invention is not limited to the type of motorcycle shown in FIG. 19B, and can be applied to various types of motorcycle tires. FIG. 20A shows an example applied to an airplane. FIG. 20B shows an example applied to a satellite probe. Although not shown in the drawings, even if the vehicle is a special vehicle such as another heavy machine, it is possible to apply the

tire wheel

100, 100a, 100c or the like having the double structure of the present invention as long as the device is equipped with a tire. Is possible.
As mentioned above, although the structural example of the tire wheel provided with the double structure concerning Example 7 of this invention was shown, the said structure is an example and a various change is possible.
As mentioned above, although the preferable example in the structural example of the tire wheel provided with the double structure has been illustrated and described, it is understood that various modifications can be made without departing from the technical scope of the present invention. I will.
While the preferred embodiment of the invention has been illustrated and described, it will be appreciated that various changes can be made without departing from the scope of the invention. Therefore, the technical scope of the present invention is limited only by the description of the appended claims.

Claims

A bead seat for attaching a bead portion of a flange and a tubeless tire, a wheel having a storage space that is smaller in diameter than the flange and provided in a well, an inner tire that can be stored in the storage space, and an air pressure of the tubeless tire A second fitting that includes a first rim valve to be adjusted and a second rim valve to adjust the air pressure of the inner tire, wherein a part of the inner tire is fitted to the first fitting shape of the wall surface of the storage space. In the tire wheel having a double structure for fixing the inner tire to the wheel by fitting the first fitting shape and the second fitting shape,
The wheel includes an outer ring wheel body and an inner ring wheel body that are divided so as to divide the storage space into an outer ring side and an inner ring side, and the storage space is formed by combining the outer ring wheel body and the inner ring wheel body in a divided state. In this case, a tire wheel having a double structure, wherein the first fitting shape and the second fitting shape of the inner tire are fitted and fixed.
About the outer ring wheel body joint portion and the inner ring wheel body joint portion that form a boundary surface when the outer ring wheel body and the inner ring wheel body are merged, the outer ring when the outer ring wheel body and the inner ring wheel body are merged. When the wheel body joint portion and the inner ring wheel body joint portion are fastened by a wheel fastener and the tire wheel is attached to the shaft of the vehicle body, the shaft is attached to the shaft from the inner ring wheel body side. The tire wheel according to claim 1, wherein the tire wheel is in contact with a wheel body joint portion, and the outer wheel body joint portion, the inner ring wheel body joint portion, and the shaft are fastened by a shaft fastener.
About the outer ring wheel body joint portion and the inner ring wheel body joint portion that form a boundary surface when the outer ring wheel body and the inner ring wheel body are merged, the outer ring when the outer ring wheel body and the inner ring wheel body are merged. When the wheel body joint portion and the inner ring wheel body joint portion are fastened by a wheel fastener and the tire wheel is attached to the shaft of the vehicle body, the shaft is attached to the shaft from the inner ring wheel body side. 2. The tire wheel according to claim 1, wherein the tire wheel abuts against a wheel body joint portion, and the inner ring wheel body joint portion and the shaft are fastened by a shaft fastener.
About the outer ring wheel body joint portion and the inner ring wheel body joint portion that form a boundary surface when the outer ring wheel body and the inner ring wheel body are merged, the outer ring when the outer ring wheel body and the inner ring wheel body are merged. When the wheel body joint portion and the inner ring wheel body joint portion are fastened by a wheel fastener and the tire wheel is attached to the shaft of the vehicle body, the shaft is attached to the shaft from the inner ring wheel body side. 2. The tire according to claim 1, wherein the tire passes through a wheel body joint portion and abuts against the outer wheel body joint portion, and the outer wheel body joint portion and the shaft are fastened by a shaft fastener. wheel.
About the outer ring wheel body joint portion and the inner ring wheel body joint portion that form a boundary surface when the outer ring wheel body and the inner ring wheel body are merged, the outer ring when the outer ring wheel body and the inner ring wheel body are merged. When the wheel body joint portion and the inner ring wheel body joint portion are fastened by a wheel fastener and the tire wheel is attached to the shaft of the vehicle body, the shaft is attached to the shaft from the inner ring wheel body side. Passing through the wheel body joint portion and the outer ring wheel body joint portion, abutting on the inner side of the outer surface portion of the outer ring wheel body, the outer surface portion of the outer ring wheel body and the shaft are fastened by a shaft fastener. The tire wheel according to claim 1.
The material of the inner tire is an inflatable material, and air is injected into the inner tire through the second rim valve until a predetermined air pressure is reached, so that the inner tire is inflated inside the tubeless tire. 2. The tire wheel having a double structure according to claim 1, wherein a diameter of the inner tire is larger than a diameter of the flange in a state.
The tire wheel having a double structure according to claim 6, wherein the material of the inner tire is rubber, plastic, fiber, a combination thereof, or a structural reinforcing material blended therein.
A wheel for a tire wheel according to claim 1.
A vehicle equipped with the tire wheel according to claim 1.
A bead seat for attaching a bead portion of a flange and a tubeless tire, a wheel having a storage space that is smaller in diameter than the flange and provided in a well, an inner tire that can be stored in the storage space, and an air pressure of the tubeless tire A second fitting that includes a first rim valve to be adjusted and a second rim valve for adjusting the air pressure of the inner tire, wherein a part of the inner tire is fitted to the first fitting shape of the wall surface of the storage space. A method of attaching a tire wheel having a double structure for fixing an inner tire to a wheel by fitting the first fitting shape and the second fitting shape to each other. Is divided into an outer ring wheel body and an inner ring wheel body so that the storage space is divided into an outer ring side and an inner ring side, and the outer ring wheel body and the inner ring wheel body in a divided state are divided. When the storage space is formed by combining, the double fitting structure is characterized in that the first fitting shape and the second fitting shape of the inner tire are fitted and fixed. Tire wheel mounting method.