JP2020083284A - Multi-air-chamber tire, ventilation member, method of controlling internal pressure of multi-air-chamber tire, and method of controlling ventilation member - Google Patents

Abstract

To provide a multi-air-chamber tire capable of improving the convenience of the multi-air-chamber provided with a plurality of air chambers, a ventilation member, a method of controlling an internal pressure of the multi-air-chamber tire, and a method of controlling the ventilation member.SOLUTION: A multi-air-chamber tire 1 includes partition walls 30 that partition a tire cavity into a plurality of air chambers 20 adjacent to one another, and ventilation members 10 that are provided in the respective partition walls 30 and connect the plurality of air chambers 20 to allow for ventilation. The ventilation members 10 regulate ventilation between the plurality of air chambers 20 on the basis of a predetermined condition indicating that fluid is leaking outside the tire from at least one of the plurality of air chambers 20.SELECTED DRAWING: Figure 1

Description

The present invention relates to a multi-chamber tire, a ventilation member, a method for controlling an internal pressure of the multi-chamber tire, and a method for controlling the ventilation member.

2. Description of the Related Art Conventionally, there is known a tire that can safely travel a certain distance even when the internal pressure of the tire is reduced due to a tire damage such as a flat tire. For example, in Patent Document 1, by incorporating a tube having a plurality of air chambers, even if air leaks to the outside from any of the plurality of air chambers when the tire is damaged, a tire that can continue running Is disclosed.

JP-A-2002-67610

However, in the conventional multi-chamber tire including a plurality of air chambers described above, each of the plurality of air chambers is independently filled with gas, and adjustment of the internal pressure in the plurality of air chambers is troublesome. Therefore, in a tire having a plurality of air chambers, there is room for improvement in adjusting the internal pressure in the plurality of air chambers.

An object of the present invention made in view of such circumstances is to improve the convenience of a multi-air chamber tire including a plurality of air chambers, a multi-air chamber tire, a ventilation member, an internal pressure control method for a multi-air chamber tire, and a ventilation member control method. To provide.

A multi-chamber tire according to the present invention includes a partition wall that partitions and forms a plurality of air chambers adjacent to each other in a tire inner cavity, and a ventilation member that is provided in the partition wall and that connects the plurality of air chambers to allow ventilation. The ventilation member regulates ventilation between the plurality of air chambers based on a predetermined condition indicating that fluid is leaking to the outside of the tire from at least one of the plurality of air chambers. ..
According to the multi-chamber tire of the present invention, it is possible to easily adjust the internal pressures in the plurality of air chambers, and the convenience of the multi-chamber tire including the plurality of air chambers is improved.

In the multi-chamber tire according to the present invention, the ventilation member blocks ventilation between the plurality of air chambers when the predetermined condition is satisfied, and the plurality of air vent members when the predetermined condition is not satisfied. It is preferable to allow ventilation between the air chambers. With such a configuration, it is possible to easily adjust the internal pressures in the plurality of air chambers when the tire is damaged and at other times.

The multi-chamber tire according to the present invention is preferably provided with a detection unit for detecting whether or not the predetermined condition is satisfied. According to this structure, the ventilation member can autonomously detect changes in the states of the plurality of air chambers, and the convenience of the multi-air chamber tire including the plurality of air chambers is further improved.

In the multi-chamber tire according to the present invention, it is preferable that the detection unit includes a pressure sensor. With this configuration, the ventilation member can detect changes in the states of the plurality of air chambers due to changes in atmospheric pressure, and the convenience of the multi-air chamber tire including the plurality of air chambers is further improved.

In the multi-chamber tire according to the present invention, it is also preferable that the detection unit includes a flow meter. According to such a configuration, the ventilation member can detect the change in the state of the plurality of air chambers by the change in the flow rate of the air flowing through the ventilation member, and the convenience of the multi-air chamber tire including the plurality of air chambers is further improved. ..

In the multi-chamber tire according to the present invention, it is also preferable that the detection unit includes a communication unit. According to such a configuration, the ventilation member can detect a change in the state of the plurality of air chambers by receiving a signal from the outside, and the convenience of the multi-air chamber tire including the plurality of air chambers is further improved.

The ventilation member according to the present invention is used for the above-described multi-chamber tire.
According to the ventilation member of the present invention, the convenience of the multi-chamber tire including a plurality of air chambers is improved.

The internal pressure control method for a multi-chamber tire according to the present invention shows that fluid is leaking to the outside of the tire from at least one of the plurality of air chambers, when a predetermined condition is satisfied, Blocking the ventilation between the plurality of air chambers by the ventilation member, and allowing the ventilation between the plurality of air chambers by the ventilation member when the predetermined condition is not satisfied. ..
According to the internal pressure control method for a multi-chamber tire according to the present invention, the convenience of the multi-chamber tire including a plurality of air chambers is improved.

A method for controlling a ventilation member according to the present invention is the method for controlling a ventilation member in a multi-chamber tire as described above, wherein fluid leaks from at least one of the plurality of air chambers to the outside of the tire. Indicating that, when a predetermined condition is satisfied, a step of interrupting ventilation between the plurality of air chambers by the ventilation member, and when the predetermined condition is not satisfied, the ventilation member Allowing ventilation between the plurality of air chambers.
According to the method for controlling a ventilation member of the present invention, the convenience of a multi-chamber tire including a plurality of air chambers is improved.

According to the present invention, it is possible to provide a multi-air chamber tire, a ventilation member, a method for controlling the internal pressure of the multi-air chamber tire, and a method for controlling the ventilation member, which improves the convenience of the multi-air chamber tire including a plurality of air chambers.

It is a schematic diagram showing roughly in the state where the multi-chamber tire concerning one embodiment of the present invention was attached to the rim. It is a schematic diagram showing roughly the modification of the multi-chamber tire concerning the present invention in the state where it was attached to the rim. It is a tire width direction sectional view of the multi-chamber tire concerning one embodiment of the present invention. It is a schematic diagram which shows schematically an example of the modification at the time of the flat of the multi-chamber tire of FIG. It is a schematic diagram which shows schematically another example of the modification of the multi-chamber tire of FIG. 1 at the time of puncture. It is a flow figure showing an example of processing which a ventilation member concerning one embodiment of the present invention performs. It is a flowchart which shows the other example of the process which the ventilation member which concerns on one Embodiment of this invention performs.

Hereinafter, a multi-chamber tire according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, common members and parts are designated by the same reference numerals.

FIG. 1 is a schematic diagram schematically showing a multi-chamber tire 1 (hereinafter, also referred to as “tire 1”) of an embodiment of the present invention mounted on a rim 40. The schematic view is shown in a tire width direction sectional view in which the tire 1 is cut along the tire width direction. In FIG. 1, the tire 1 is provided with a pair of partition walls 30a and 30b that divides the inner cavity of the tire in the tire half part with the tire equatorial plane CL as a boundary. The partition walls 30a and 30b are, for example, rubber-coated film members, but are not limited thereto, and may be any partition walls that prevent leakage of gas such as air. In the following, general air will be described as an example of the gas filled in the tire cavity. Accordingly, when the tire 1 is mounted on the rim 40 and filled with air, the partition walls 30a and 30b define three air chambers 20a, 20b, and 20c inside the tire 1. The two partition walls 30a and 30b are provided with ventilation members 10a and 10b, respectively. The ventilation members 10a and 10b are, for example, valves or valves, but are not limited thereto, and may be any ventilation member that enables or regulates ventilation between air chambers. Hereinafter, when the ventilation members 10a and 10b are not particularly distinguished, they are simply referred to as the ventilation member 10, and when the partition walls 30a and 30b are not particularly distinguished, they are simply referred to as the partition walls 30 and the air chambers 20a, 20b, and 20c are particularly distinguished. If not, the air chamber 20 will be simply referred to as the air chamber 20.

When air is leaking to the outside from any of the air chambers 20 due to tire damage, the ventilation member 10 regulates ventilation between the air chambers 20 so that air from the air chambers 20 where no air leaks occurs. Reduces air leakage and enables continuous running. On the other hand, when the tire 1 is filled with air, the ventilation member 10 enables ventilation between the air chambers 20, so that, for example, a portion of the air filled in the air chamber 20b from the valve 41 of the rim 40 is removed. The parts can also reach the air chambers 20a and 20c. Therefore, the tire 1 can be filled with air from the valve 41 of the rim 40, similarly to a tire that does not have a plurality of air chambers.

In FIG. 1, the tire 1 includes two ventilation members 10, two partition walls 30, and three air chambers 20 partitioned in the tire width direction, but the number and position of each are not limited to this. Absent. FIG. 2 is a schematic view schematically showing a modified example of the multi-chamber tire 1 with the rim 40 mounted on the rim 40. For example, as shown in FIG. 2, each tire 1 has one ventilation member 10 and one partition 30. For this reason, in the tire 1, the two air chambers 20a and 20b can be partitioned and formed in the tire radial direction by the partition wall 30. Further, in the tire 1, the two air chambers 20a and 20b can be connected to each other by the ventilation member 10 so that the air chambers can be ventilated. The number of air chambers 20 formed in the inner cavity of the tire 1 can be arbitrarily designed according to its application and the like.

(Structure of multi-chamber tires)
Next, the configuration of the multi-chamber tire 1 will be described in detail.

Unless otherwise specified below, the dimensions, length relationships, positional relationships, etc. of each element are the standard conditions in which a multi-chamber tire as a pneumatic tire is attached to the applicable rim, the specified internal pressure is filled, and no load is applied. Shall be measured at. In addition, the width of the contact surface in contact with the road surface in the tire width direction is called the contact width of the tire when the tire is attached to the applicable rim, the tire is filled with the specified internal pressure, and the maximum load is applied. The end portion of the tire in the tire width direction is called the ground contact end.

In the present specification, the “applicable rim” is an industrial standard that is effective in regions where pneumatic tires are produced and used, and includes JATMA YEAR BOOK of JATMA (Japan Automobile Tire Association) in Japan and ETRTO (Eurto in Europe. STANDARDS MANUAL of The European Tire and Rim Technical Organisation, in the United States TRA (The Tire and Rim Association, Inc.) YEAR BOX described in the standard or future ET (size ET), applicable ET. STANDARDS MANUAL is Measuring Rim, and TRA is YEAR BOOK is Design Rim), but in the case of sizes not described in these industry standards, it is a rim having a width corresponding to the bead width of a pneumatic tire. In addition to the current size, the “applicable rim” also includes sizes that may be included in the aforementioned industry standard in the future. Examples of "sizes to be described in the future" may include sizes described as "FUTURE DEVELOPMENTS" in the ETRTO 2013 edition.

In the present specification, the "specified internal pressure" means the air pressure (maximum air pressure) corresponding to the maximum load capacity of a single wheel in the applicable size and ply rating, which is described in the above-mentioned industrial standards such as JATMA YEAR BOOK, In the case of a size not described in the above-mentioned industrial standards, it means the air pressure (maximum air pressure) corresponding to the maximum load capacity specified for each vehicle in which the tire is mounted. Further, in the present specification, the "maximum load" is a load corresponding to the maximum load capacity in a tire of an applicable size described in the aforementioned industrial standard, or in the case of a size not described in the aforementioned industrial standard. Means a load corresponding to the maximum load capacity specified for each vehicle on which the tire is mounted.

FIG. 3 shows a cross-sectional view in the tire width direction in which a multi-chamber tire 1 (hereinafter, also referred to as “tire 1”) according to an embodiment of the present invention is cut along the tire width direction. In the present specification, the tire width direction means a direction parallel to the rotation axis of the tire 1. In FIG. 3, the tire width direction is indicated by an arrow W. Further, the tire radial direction means a direction orthogonal to the rotation axis of the tire 1. In FIG. 3, the tire radial direction is indicated by an arrow R. The tire 1 will be described as having a configuration symmetrical with respect to the tire equatorial plane CL, but the tire 1 is not limited to this and may have an asymmetric configuration with respect to the tire equatorial plane CL.

In the present specification, a side closer to the rotation axis of the tire 1 along the tire radial direction is referred to as “tire radial direction inner side”, and a side farther from the rotation axis of the tire 1 along the tire radial direction is “tire radial direction outer side”. Called. On the other hand, the side closer to the tire equatorial plane CL along the tire width direction is referred to as “tire width direction inner side”, and the side farther from the tire equatorial plane CL along the tire width direction is referred to as “tire width direction outer side”.

As shown in FIG. 3, the tire 1 has a pair of bead portions 2, a pair of sidewall portions 3, and a tread portion 4. The sidewall portion 3 extends between the tread portion 4 and the bead portion 2. The sidewall portion 3 is located outside the bead portion 2 in the tire radial direction.

The pair of bead portions 2 each include a bead core 2a and a bead filler 2b. The bead core 2a includes a plurality of bead wires whose periphery is covered with rubber. The bead wire is formed of a steel cord. The steel cord can be formed of, for example, a steel monofilament or a stranded wire. The bead filler 2b is made of rubber or the like and is located on the outer side in the tire radial direction with respect to the bead core 2a. In the present embodiment, the bead filler 2b has a thickness that decreases outward in the tire radial direction. The tire 1 may have a structure without the bead filler 2b. The bead portion 2 is configured to contact the rim on the tire radial direction inner side and the tire width direction outer side when the tire 1 is mounted on the rim.

The tire 1 has a carcass 5. The carcass 5 extends in a toroidal shape between the pair of bead cores 2a to form a skeleton of the tire. The end portion side of the carcass 5 is locked to the bead core 2a. Specifically, the carcass 5 has a carcass main body portion 5a arranged between the bead cores 2a, and a carcass folding-back portion 5b that is folded around the bead core 2a from the tire width direction inner side to the tire width direction outer side. ing. The length of the carcass folded-back portion 5b from the tire width direction inner side to the tire width direction outer side can be set arbitrarily. Further, the carcass 5 may have a structure that does not have the carcass folded-back portion 5b or a structure in which the carcass folded-back portion 5b is wound around the bead core 2a.

The carcass 5 can be composed of one or more carcass layers. For example, the carcass 5 can be configured by two carcass layers that are laminated and arranged in the tire radial direction on the tire equatorial plane CL. The carcass cord forming the carcass layer of the carcass 5 is made of, for example, polyester, but is not limited thereto, and may be made of organic fibers such as nylon, rayon, and aramid, and metal such as steel. In the present embodiment, the carcass 5 has a radial structure, but the carcass 5 is not limited to this and may have a bias structure.

A belt 6 and a tread rubber that reinforce the tread portion 4 are provided outside the carcass 5 in the tire radial direction of the tread portion 4. The belt 6 can be composed of, for example, a plurality of belt layers laminated in the tire radial direction. The belt cord constituting the belt layer of the belt 6 is made of, for example, polyester, but is not limited to this, and may be made of organic fibers such as nylon, rayon, and aramid, and metal such as steel.

The tire 1 has an inner liner 7. The inner liner 7 is arranged so as to cover the inner wall surface of the tire 1. The inner liner 7 can be composed of a plurality of inner liner layers laminated in the tire radial direction on the tire equatorial plane CL. The inner liner 7 is made of, for example, butyl rubber having low air permeability. The butyl rubber includes, for example, butyl rubber and halogenated butyl rubber which is a derivative thereof. The inner liner 7 is not limited to butyl rubber, but can be made of other rubber composition, resin, or elastomer.

The tire 1 has a reinforcing layer 8. The reinforcing layer 8 is arranged inside the inner wall surface of the tire with respect to the inner liner 7 so as to cover the inner wall surface of the tire 1. The reinforcing layer 8 is, for example, a film member coated with rubber, but can be any member such as a film having low permeability to gas such as air. As a result, at least a part of the reinforcing layer 8 functions as the partition wall 30 that forms the air chamber. The reinforcing layer 8 is connected to the inner liner 7 at the first connecting portion 9a and the second connecting portion 9b, and is separated from the inner liner 7 between the first connecting portion 9a and the second connecting portion 9b. There is. In the present embodiment, two first connecting portions 9a are provided at symmetrical positions with respect to the tire equatorial plane CL. Two second connecting portions 9b are provided at positions symmetrical with respect to the tire equatorial plane CL. The first connecting portion 9a and the second connecting portion 9b are provided at different positions in the tire radial direction. The second connecting portion 9b is located outside the first connecting portion 9a in the tire radial direction.

In the present embodiment, when the tire 1 is filled with air, in the tire cavity, a space surrounded by the inner liner 7 and the reinforcing layer 8 and a space inside the reinforcing layer 8 in the tire width direction, An air chamber to which internal pressure is applied is formed. Therefore, in the present embodiment, the portions of the reinforcing layer 8 surrounded by the first connecting portion 9a and the second connecting portion 9b function as the partition walls 30a and 30b described above, respectively. That is, the pair of partition walls 30a and 30b respectively located in the tire half portion are connected to the tire inner wall surface at the first connecting portion 9a and the second connecting portion 9b. Here, the state in which the tire 1 is filled with air is a state in which the tire 1 is mounted on the applicable rim and a predetermined internal pressure is filled. For example, the state in which the tire 1 is filled with air includes the above-described reference state. An air chamber formed in a space inside the reinforcing layer 8 in the tire width direction is referred to as an air chamber 20b. Air chambers formed in the space surrounded by the reinforcing layer 8 and the tire inner wall surface of the sidewall portion 3 are referred to as air chambers 20a and 20b, respectively.

The air chambers 20a, 20b, and 20c are each formed in one continuous space in the tire circumferential direction, but are not limited to this, and are provided so as to extend, for example, in a direction intersecting the tire circumferential direction. It may be formed by a plurality of small air chambers formed by being divided in the tire circumferential direction by partition walls or the like.

The reinforcing layer 8 can be formed on the inner wall surface of the tire 1 by any method. For example, when the reinforcing layer 8 is formed, the inner liner 7 and the reinforcing layer 8 can be releasably overlapped and bonded to each other in the tire width direction between the first connecting portion 9a and the second connecting portion 9b. The inner liner 7 and the reinforcing layer 8 are coated with a release agent such as silicone oil in a release area between the first connecting portion 9a and the second connecting portion 9b on the surface of the reinforcing layer 8 on the outer side in the tire width direction. By doing so, at least a part can be peelably bonded. Alternatively, by sandwiching and molding a peeling member in the peeling region between the inner liner 7 and the reinforcing layer 8, it becomes possible to easily perform the peeling work, and at least a part of the peelable adhesive is adhered. it can. The peeling member may be, for example, a stretchable knitted fabric, a woven fabric, a cotton-shaped member, or a member in which a plurality of these members are stacked, or a resin film or the like, such that the rubber does not fully penetrate during vulcanization. it can. By using this forming method, the tire 1 can be manufactured by a simpler manufacturing method, and an increase in manufacturing cost can be suppressed.

The example in which the partition wall 30 is formed by peeling at least a part of the reinforcing layer 8 from the inner liner 7 has been described above, but the configuration or forming method of the partition wall 30 is not limited to this. For example, the partition wall 30 can be formed by adhering the first connecting portion 9a and the second connecting portion 9b of an arbitrary sheet-shaped member having low permeability to gas such as air to the inner wall surface of the tire. Alternatively, the partition wall 30 has a portion of the outer surface of an arbitrary hollow ring-shaped member having low permeability to gas such as air, the inner wall surface of the tire, and ends of the first connecting portion 9a and the second connecting portion 9b. It can be formed by bonding as a part.

In the present embodiment, at least a part of other members included in the tire 1 may be used as the reinforcing layer 8 forming the partition wall 30. For example, the reinforcing layer 8 may be a carcass layer forming a part of the carcass 5 described above. In such a case, the carcass layer that is the reinforcing layer 8 is connected to another carcass layer at the first connecting portion 9a and the second connecting portion 9b, and between the first connecting portion 9a and the second connecting portion 9b. By separating from the other carcass layer, a partition wall forming an air chamber can be formed. The reinforcing layer 8 may be an inner liner layer forming a part of the inner liner 7 described above. In this case, the inner liner layer that is the reinforcing layer 8 is connected to another inner liner layer at the first connecting portion 9a and the second connecting portion 9b, and the first connecting portion 9a and the second connecting portion 9b are connected to each other. By separating from the other inner liner layers between them, it is possible to form partition walls that form air chambers.

The partition wall 30 has such strength that it does not expand and deform when the air chamber 20a or 20c facing the partition wall 30 is filled with a predetermined internal pressure. For example, the strength of the partition wall 30 is determined by the internal pressure of the second air chambers 21a and 21b when the second air chambers 21a and 21b are filled with the specified internal pressure in a state where the first air chamber 20 is not filled with air. The strength of 30 can be such that it does not expand and deform. For example, the strength of the partition wall 30 is such that when the air chambers 20a and 20c are filled with a predetermined internal pressure in a state where the air chambers 20b are not filled with air, the air chambers 20a and 20c have a maximum load or a constant value less than the maximum load. It is possible to have a strength capable of supporting the load without expanding and deforming. In order to increase the strength, the partition wall 30 is formed of, for example, a member formed by coating organic fiber, glass fiber, steel cord, or the like with a rubber composition or resin, or a member formed of a rubber composition having high hardness. Can be used as a member for restraining expansion deformation.

The first connecting portion 9a and the second connecting portion 9b of the partition wall 30 are, when the air chambers 20a and 20c are filled with a predetermined internal pressure in a state where the air chambers 20b are not filled with air on the tire inner wall surface, The air chambers 20a and 20c can be connected to a position capable of supporting a maximum load or a constant load less than the maximum load. For example, the first connecting portion 9a can be connected to the tire inner wall surface outside the bead core 2a of the bead portion 2 in the tire radial direction. Further, for example, the second connecting portion 9b can be connected to the tire width direction outer side than the ground contact end of the tread portion 4. However, the second connecting portion 9b can also be connected to the inside of the tread portion 4 in the tire width direction with respect to the ground contact end.

Further, in FIG. 3, the second connecting portion 9b is connected to the inner wall surface of the tire at a position outside the maximum width position of the belt 6 in the tire width direction, but this is not a limitation. The second connecting portion 9b is located inside the maximum width position of the belt 6 in the tire width direction, and preferably at a position separated from the maximum width position of the belt 6 in the tire width direction by 10 to 20% of the maximum belt width. Thus, it may be connected to the inner wall surface of the tire. According to such a configuration, when air is leaking from the air chamber 20b due to tire damage, the load applied to the air chambers 20a and 20c can be supported by the belt 6, and the support capacity at the time of tire damage is further improved. be able to.

The tire 1 further includes a ventilation member 10. The ventilation member 10 connects a plurality of air chambers 20 adjacent to each other so as to allow ventilation. The ventilation member 10 is, for example, a valve, but is not limited to this, and may be any device that allows ventilation between the air chambers 20, such as a mechanical or electromagnetic valve. The ventilation member 10 can be arranged at any position on the partition wall 30. For example, as shown in FIG. 3, in the present embodiment, the ventilation member 10 is arranged at a position that penetrates the reinforcing layer 8 between the first connecting portion 9a and the second connecting portion 9b. Each of the partition walls 30a and 30b includes one ventilation member 10a and one ventilation member 10b. As a result, the ventilation member 10a connects the air chamber 20a and the air chamber 20b so that air can flow. The ventilation member 10b connects the air chamber 20b and the air chamber 20c so that air can flow. In FIG. 3, one ventilation member 10 is arranged for each partition wall 30, but the number of ventilation members 10 is not limited thereto. The ventilation member 10 can be arranged in an arbitrary number in the tire 1 depending on the application of the tire 1 and the like. In addition, in the present embodiment, the ventilation member 10 is arranged at a position that connects the two air chambers 20 adjacent to each other, which are partitioned by the partition wall 30, so as to allow ventilation, but the invention is not limited to this, and the partition member 30 is partitioned. In addition, three or more air chambers 20 adjacent to each other may be arranged at a position where they can be simultaneously ventilated.

The tire 1 may further include a ventilation member at a position penetrating the outer wall surface of the tire. The ventilation member may have the same configuration as the ventilation member 10 described above. Accordingly, the ventilation member can connect any one of the air chambers 20 and the outside of the tire to allow ventilation. For example, by arranging the inner liner 7 and the side wall portion 3 at a position penetrating the inner liner 7 and the sidewall portion 3, the air chamber 20a or 20c and the outside of the tire can be connected to be able to ventilate. According to this configuration, even when the multi-chamber tire 1 is mounted on the rim 40, the air chamber 20 can be repeatedly filled with air directly from the ventilation member without the intervention of the valve 41 of the rim 40. , The convenience of multi-chamber tires is improved.

The ventilation member 10 can regulate ventilation between the plurality of air chambers 20 that are connected to each other so as to allow ventilation. The ventilation member 10 includes, for example, a ventilation path for connecting the plurality of air chambers 20 so as to allow ventilation. For example, the ventilation member 10 can regulate ventilation between the plurality of air chambers 20 based on a predetermined condition. The predetermined condition may be a condition indicating that gas is leaking to the outside of the tire from at least one of the plurality of air chambers 20 due to tire damage such as puncture. In such a case, the ventilation member 10 normally opens the ventilation passage to allow ventilation between the plurality of air chambers 20, and when the predetermined condition is satisfied, closes the ventilation passage to connect the plurality of air chambers 20. The ventilation of can be blocked. Alternatively, the predetermined condition may be a condition indicating that air is being injected from the outside of the tire into at least one of the plurality of air chambers 20. In such a case, the ventilation member 10 normally closes the ventilation passage to block the ventilation between the plurality of air chambers 20, and when the predetermined condition is satisfied, opens the ventilation passage to open the space between the plurality of air chambers 20. Ventilation is allowed.

The ventilation member 10 can regulate ventilation between the plurality of air chambers 20 by an arbitrary method. For example, the ventilation member 10 may allow or block ventilation between the air chambers 20, may regulate the flow rate of air between the air chambers 20, or air between the air chambers 20. It may be possible to regulate the flowing direction of the.

The ventilation member 10 may include a detection unit 11 for detecting whether or not a predetermined condition is satisfied. When the detection unit 11 detects that the predetermined condition is satisfied, the ventilation member 10 may regulate the ventilation between a plurality of air chambers 20 that are adjacent to each other and are connected to the ventilation member 10 so as to allow ventilation. it can. The ventilation member 10 includes a driving unit that drives the ventilation member 10 when the detection unit 11 detects that a predetermined condition is satisfied. The drive unit may be connected to the detection unit 11 so as to be able to communicate by wire or wirelessly. When the driving unit receives a signal indicating that the predetermined condition is satisfied from the detection unit 11, the driving unit can drive the ventilation member 10 by a mechanical or electrical method. For example, the drive unit may be a switch that mechanically controls the opening and closing of a valve provided in the ventilation path of the ventilation member 10. Further, for example, the driving means may be an electronic circuit or the like that is connected to a valve or the like provided in the ventilation path of the ventilation member 10 so as to be communicable by wire or wirelessly and that transmits a signal for controlling opening/closing of the valve. ..

For example, the predetermined condition may be a condition relating to the differential pressure between the air chambers 20 to which the ventilation member 10 is connected so as to allow ventilation. In such a case, the detection unit 11 may include a pressure sensor. The ventilation member 10 regulates ventilation between a plurality of connected air chambers 20 when the detection unit 11 detects that a pressure difference of a predetermined amount or more is generated between the air chambers 20 that are connected to allow ventilation. can do. Further, for example, the predetermined condition may be a condition regarding the flow rate of air flowing through the ventilation member 10. In such a case, the detection unit 11 may include a flow meter. The ventilation member 10 can regulate the ventilation between the plurality of connected air chambers 20 when the detection unit 11 detects that the flow rate of the air in the ventilation member 10 is equal to or more than a predetermined amount. The predetermined condition is not limited to these, and may be any condition regarding the internal pressure of the air chamber 20. Further, for example, the detection unit 11 may include a communication unit. The communication means is, for example, a wireless communication antenna, but is not limited to this, and may be any means including a device or a device that enables wired or wireless communication. The ventilation member 10 can regulate the ventilation between the plurality of connected air chambers 20 when the detection unit 11 receives a signal notifying that a predetermined condition is satisfied.

Although the detection unit 11 included in the ventilation member 10 is integrated with the ventilation member 10 in FIG. 3, the detection unit 11 is not limited to this and may be a separate body from the ventilation member 10. For example, when the detection unit 11 includes a pressure sensor, the detection unit 11 is provided separately from the ventilation member 10 and can be installed at a position where the internal pressure of the air chamber 20 can be measured. For example, when the detection unit 11 includes a flow meter, the detection unit 11 can be provided separately from the ventilation member 10 and can be installed at a position where the flow rate of the air flowing through the ventilation path of the ventilation member 10 can be measured. Further, for example, when the detection unit 11 includes a communication unit, the detection unit 11 can be provided separately from the ventilation member 10 and can be installed at a position where a signal from the outside can be received. In FIG. 3, one detection unit 11 is arranged for each ventilation member 10, but the number of detection units 11 is not limited to these. The number of detection units 11 can be arranged in the ventilation member 10 in an arbitrary number depending on the application of the ventilation member 10.

(Operation example 1 of multi-chamber tire)
Hereinafter, an example of the operation of the multi-chamber tire 1 according to the embodiment of the present invention will be described. As shown in FIG. 1, the inner cavity of the multi-chamber tire 1 is partitioned by two partition walls 30a and 30b. Therefore, when the tire 1 is mounted on the rim 40, the partition walls 30a and 30b form three air chambers 20a, 20b, and 20c. The two partition walls 30a and 30b are provided with ventilation members 10a and 10b, respectively. The air chambers 20a and 20b are connected to each other so that they can be ventilated via the ventilation member 10a. The air chambers 20b and 20c are connected to each other via the ventilation member 10b so that they can be ventilated. In this operation example, the predetermined condition is a condition indicating that air is leaking to the outside of the tire from at least one of the plurality of air chambers 20 due to tire damage such as puncture.

The ventilation member 10 opens the ventilation passage when a predetermined condition is not satisfied to allow ventilation between the plurality of air chambers 20, and when the predetermined condition indicating tire damage is satisfied, the ventilation passage is formed. It is possible to regulate the ventilation between the plurality of air chambers 20 by closing In the state where there is no puncture or the like, the ventilation member 10 allows ventilation between the air chambers 20, so that the internal pressures of the three air chambers 20a, 20b, and 20c are substantially equal to each other. For example, when the tire 1 is mounted on the rim 40 and air is filled into the air chamber 20b from the valve 41 of the rim 40, a part of the filled air passes through the ventilation members 10a and 10b, respectively. The chambers 20a and 20c are also reached. Therefore, the three air chambers 20a, 20b, and 20c of the tire 1 can be filled with air by filling air from the valve 41 of the rim 40, as in a tire having no plurality of air chambers. it can.

Further, when the vehicle is normally traveling in the absence of puncture or the like, the ventilation members 10a and 10b allow ventilation in the air chambers 20a, 20b, and 20c. Therefore, when the external pressure applied to the tire 1 changes according to the movement of the weight of the vehicle or the change of the road surface condition, the air in the three air chambers 20a, 20b, and 20c moves between the air chambers 20. The internal pressures of the three air chambers 20a, 20b, and 20c are maintained substantially equal to each other. As a result, for example, as compared with the conventional run flat tire having the side reinforcing rubber in the sidewall portion 3, the deterioration of riding comfort and fuel consumption performance can be alleviated.

On the other hand, for example, as shown in FIG. 4, when a puncture or the like occurs in the sidewall portion 3 of the tire half where the air chamber 20a faces, the air in the air chamber 20a from the damaged portion where the puncture or the like occurs. Leaks out of the tire. At this time, the detection unit 11a of the ventilation member 10a detects that a predetermined condition is satisfied due to the leakage of air from the air chamber 20a. For example, the detection unit 11a can detect that the internal pressure of the air chamber 20a or 20b has decreased by the pressure sensor included in the detection unit 11a. Alternatively, the detection unit 11a can detect that a flow rate of a predetermined amount or more has occurred in the ventilation member 10 by the flow meter included in the detection unit 11a. Alternatively, the detection unit 11a can detect that a signal indicating the leakage of air from the air chamber 20a to the outside of the tire has been received by the communication unit included in the detection unit 11a.

The ventilation member 10a regulates ventilation in the ventilation member 10a when the detection unit 11a detects that a predetermined condition is satisfied. For example, the ventilation member 10a can block the ventilation between the air chambers 20a and 20b. Alternatively, the ventilation member 10a can block the ventilation from the air chamber 20b to the air chamber 20a while maintaining the ventilation from the air chamber 20a to the air chamber 20b. Accordingly, the ventilation member 10a prevents the air in the air chamber 20b from leaking to the outside of the tire.

In a state where air in the air chamber 20a leaks to the outside of the tire, the ventilation between the air chambers connected by the ventilation member 10a is blocked, so that the internal pressure of the air chamber 20a becomes lower than the internal pressure of the air chamber 20b. .. As a result, the partition wall 30a comes into close contact with the tire inner wall surface on the air chamber 20a side. On the other hand, since the ventilation member 10a blocks the ventilation from the air chamber 20b to the air chamber 20a, it is possible that a predetermined amount or more of ventilation is generated from the air chamber 20c to the air chamber 20b via the ventilation member 10b. Can be prevented. At this time, the detection unit 11b of the ventilation member 10b does not detect that the predetermined condition is satisfied due to the leakage of air from the air chamber 20a. The ventilation member 10b continues to allow ventilation between the air chambers 20b and 20c to which the ventilation member 10b is connected. Accordingly, even when the shapes of the air chambers 20b and 20c are deformed, the internal pressures of the air chambers 20b and 20c are maintained substantially equal. Therefore, the air chamber 20b and the air chamber 20c can alleviate the deterioration of the riding comfort and fuel consumption performance of the vehicle after the puncture.

Further, for example, as shown in FIG. 5, when a puncture or the like occurs in the tread portion 4, the air in the air chamber 20b leaks to the outside of the tire from the damaged portion where the puncture or the like has occurred. At this time, both the detection unit 11a of the ventilation member 10a and the detection unit 11b of the ventilation member 10b detect that the predetermined condition is satisfied due to the leakage of air from the air chamber 20b.

The ventilation member 10a cuts off ventilation in the ventilation member 10a when the detection unit 11a detects that a predetermined condition is satisfied. The ventilation member 10b shuts off ventilation in the ventilation member 10b when the detection unit 11b detects that a predetermined condition is satisfied. Accordingly, the ventilation members 10a and 10b prevent the air in the air chambers 20a and 20c from leaking to the outside of the tire. Therefore, the two air chambers 20a and 20c support the vehicle body and enable traveling after the puncture. That is, the air chambers 20a and 20c play the same role as, for example, the side reinforcing rubber arranged in the sidewall portion of the conventional run-flat tire.

(Treatment example 1 of multi-chamber tire)
An example of a process executed by the ventilation member 10 included in the multi-chamber tire 1 according to the embodiment of the present invention will be described with reference to FIG. 6.

Step S101: The ventilation member 10 allows ventilation between the air chambers 20 to which the ventilation member 10 is connected.

Step S102: The ventilation member 10 detects that the detection unit 11 satisfies a predetermined condition. It is assumed that the predetermined condition is a condition indicating that air is leaking to the outside of the tire from at least one of the plurality of air chambers 20 due to tire damage such as flat tire. When the detection unit 11 does not detect that the predetermined condition is satisfied (step S102-No), the process from step S101 is repeated, and the ventilation member 10 is connected between the air chambers 20 to which the ventilation member 10 is connected. Maintain the condition that allows the ventilation of.

Step S103: When the detection unit 11 detects that the predetermined condition is satisfied (Step S102-Yes), the ventilation member 10 blocks the ventilation between the air chambers 20 to which the ventilation member 10 is connected. ..

(Operation example 2 of multi-chamber tire)
Hereinafter, another example of the operation of the multi-chamber tire 1 according to the embodiment of the present invention will be described. As shown in FIG. 1, the inner cavity of the multi-chamber tire 1 is partitioned by two partition walls 30a and 30b. Therefore, when the tire 1 is mounted on the rim 40, the partition walls 30a and 30b form three air chambers 20a, 20b, and 20c. The two partition walls 30a and 30b are provided with ventilation members 10a and 10b, respectively. The air chambers 20a and 20b are connected to each other so that they can be ventilated via the ventilation member 10a. The air chambers 20b and 20c are connected to each other via the ventilation member 10b so that they can be ventilated. In this operation example, the predetermined condition is a condition indicating that air is being injected from the outside of the tire into at least one of the plurality of air chambers 20.

When the predetermined condition is not satisfied, the ventilation member 10 blocks the ventilation path to block the ventilation between the plurality of air chambers 20 and the predetermined condition indicating that air is being injected from the outside is satisfied. In this case, the ventilation path can be opened to allow ventilation between the plurality of air chambers 20. When the air is not being injected, the ventilation between the air chamber 20a and the air chamber 20b is blocked by the ventilation member 10a. The ventilation between the air chambers 20b and 20c is blocked by the ventilation member 10b. This allows the three air chambers 20a, 20b, and 20c to behave as air chambers independent of each other. For example, the air chambers 20a, 20b, and 20c may have substantially equal internal pressures or different internal pressures.

For example, as shown in FIG. 4, when a puncture or the like occurs in the sidewall portion 3 of the tire half that faces the air chamber 20a, the air in the air chamber 20a is transferred to the outside of the tire from the damaged portion where the puncture or the like occurs. Leak to. At this time, the ventilation member 10a blocks the ventilation between the air chamber 20a and the air chamber 20b. Therefore, since the air chambers 20a and 20b are partitioned by the partition wall 30a, air does not leak from the air chambers 20b and 20c to the outside of the tire. Therefore, the air chamber 20b and the air chamber 20c support the vehicle body and enable traveling after the puncture. At this time, the air in the air chamber 20a leaks to the outside of the tire, so that the internal pressure of the air chamber 20a becomes lower than the internal pressure of the air chamber 20b, and the partition wall 30a comes into close contact with the tire inner wall surface on the air chamber 20a side. Since the partition wall 30a is in close contact with the tire inner wall surface on the air chamber 20a side, leakage of air from the damaged portion can be reduced.

Further, for example, as shown in FIG. 5, when a puncture or the like occurs in the tread portion 4, the air in the air chamber 20b leaks to the outside of the tire from the damaged portion where the puncture or the like has occurred. At this time, the ventilation member 10a blocks the ventilation between the air chamber 20a and the air chamber 20b. Further, the ventilation member 10b blocks the ventilation between the air chamber 20b and the air chamber 20c. Therefore, since the air chambers 20a and 20c are separated from the air chambers 20b by the partition walls 30a and 30b, air does not leak from the air chambers 20a and 20c to the outside of the tire. Therefore, the air chamber 20a and the air chamber 20c support the vehicle body and enable traveling after the puncture.

On the other hand, for example, when air is being injected into the air chamber 20b from the valve 41 of the rim 40 when the tire 1 is mounted on the rim 40, the detection units 11a and 11b cause the air injection into the air chamber 20b. Due to the above, it is detected that a predetermined condition is satisfied. For example, the detection units 11a and 11b can detect that the internal pressure of the air chamber 20b is rising by the pressure sensor included in the detection units 11a and 11b. Alternatively, the detection units 11a and 11b can detect that a signal indicating that air is being injected into the air chamber 20b from the outside is received by the communication unit included in the detection units 11a and 11b.

The ventilation member 10a allows ventilation in the ventilation member 10a when the detection unit 11a detects that a predetermined condition is satisfied. The ventilation member 10b allows ventilation in the ventilation member 10b when the detection unit 11b detects that a predetermined condition is satisfied. Thereby, for example, when the tire 1 is mounted on the rim 40, when air is injected into the air chamber 20b from the valve 41 of the rim 40, a part of the injected air flows through the ventilation members 10a and 10b, respectively. Through it, it also reaches the air chambers 20a and 20c. Therefore, in the tire 1, similar to a tire not having a plurality of air chambers, by injecting air from the valve 41 of the rim 40, the three air chambers 20a, 20b, and 20c can be filled with air. ..

(Treatment example 2 of multi-chamber tire)
An example of a process executed by the ventilation member 10 included in the multi-chamber tire 1 according to the embodiment of the present invention will be described with reference to FIG. 7.

Step S201: The ventilation member 10 blocks ventilation between the air chambers 20 to which the ventilation member 10 is connected.

Step S202: The ventilation member 10 detects that the detection unit 11 satisfies a predetermined condition. It is assumed that the predetermined condition is a condition indicating that air is being injected into the at least one of the plurality of air chambers 20 from the outside of the tire. When the detection unit 11 does not detect that the predetermined condition is satisfied (step S202-No), the ventilation member 10 repeats the process from step S201 to ventilate the air chambers 20 to which the ventilation member 10 is connected. Keeps shut off.

Step S203: When the detection unit 11 detects that the predetermined condition is satisfied (Step S202-Yes), the ventilation member 10 allows ventilation between the air chambers 20 to which the ventilation member 10 is connected. ..

As described above, the multi-chamber tire 1 according to the present invention is provided with the partition wall 30 for partitioning and forming the plurality of air chambers 20 adjacent to each other in the tire inner cavity, and is provided in the partition wall 30 and can ventilate the plurality of air chambers 20. And the ventilation member 10 connected to. The ventilation member 10 regulates ventilation between the plurality of air chambers 20 based on a predetermined condition indicating that the fluid has leaked to the outside of the tire 1 from at least one of the air chambers 20. According to this configuration, when gas such as air leaks from at least one of the plurality of air chambers 20 to the outside of the tire due to tire damage such as puncture, ventilation between the plurality of air chambers 20 by the ventilation member 10 is performed. It is possible to allow the ventilation between the plurality of air chambers 20 by the ventilation member 10 when the air is injected from the outside of the tire to block or at least one of the plurality of air chambers 20. Thereby, the internal pressures in the plurality of air chambers 20 can be easily adjusted, and the convenience of the multi-air chamber tire 1 including the plurality of air chambers 20 is improved.

In the multi-chamber tire 1 according to the present invention, the ventilation member 10 blocks the ventilation between the plurality of air chambers 20 when a predetermined condition is satisfied, and the plurality of air chambers 20 when the predetermined condition is not satisfied. It is preferable to allow ventilation between them. With this configuration, the internal pressures in the plurality of air chambers 20 can be easily adjusted when the tire is damaged and at other times.

The multi-chamber tire 1 according to the present invention preferably includes a detection unit 11 for detecting whether or not a predetermined condition is satisfied. According to such a configuration, the ventilation member 10 can regulate the ventilation between the plurality of air chambers 20 based on the change in the state of the plurality of air chambers 20 detected by the detection unit 11, and the plurality of air chambers 20. The convenience of the multi-chamber tire 1 provided with is further improved.

In the multi-chamber tire 1 according to the present invention, the detection unit 11 preferably includes a pressure sensor. With such a configuration, the ventilation member 10 can detect changes in the states of the plurality of air chambers 20 due to changes in atmospheric pressure, and the convenience of the multi-air chamber tire 1 including the plurality of air chambers 20 is further improved.

In the multi-chamber tire 1 according to the present invention, it is also preferable that the detection unit 11 includes a flow meter. According to such a configuration, the ventilation member 10 can detect a change in the state of the plurality of air chambers 20 based on a change in the flow rate of the air flowing through the ventilation member 10, which is convenient for the multi-air chamber tire 1 including the plurality of air chambers 20. Sex is improved.

In the multi-chamber tire 1 according to the present invention, it is also preferable that the detection unit 11 includes a communication unit. According to such a configuration, the ventilation member 10 can detect a change in the state of the plurality of air chambers 20 by receiving a signal from the outside, and thus the convenience of the multi-air chamber tire 1 including the plurality of air chambers 20 is improved. To improve.

The ventilation member 10 according to the present invention is used for the multi-chamber tire 1 described above. According to such a configuration, when air leaks from the at least one of the plurality of air chambers 20 to the outside of the tire due to tire damage such as puncture, the ventilation member 10 blocks ventilation between the plurality of air chambers 20, Alternatively, when air is being injected into the at least one of the plurality of air chambers 20 from the outside of the tire, ventilation of the plurality of air chambers 20 by the ventilation member 10 can be permitted. This improves the convenience of the multi-chamber tire 1 including the plurality of air chambers 20.

The internal pressure control method for a multi-chamber tire 1 according to an embodiment of the present invention satisfies a predetermined condition that indicates that fluid is leaking to the outside of the tire from at least one of the plurality of air chambers 20. The ventilation member 10 blocks the ventilation between the plurality of air chambers 20 and the ventilation member 10 allows the ventilation between the plurality of air chambers 20 when a predetermined condition is not satisfied. And, including. According to such a configuration, when air leaks from the at least one of the plurality of air chambers 20 to the outside of the tire due to tire damage such as puncture, the ventilation member 10 blocks ventilation between the plurality of air chambers 20, Alternatively, when air is being injected into the at least one of the plurality of air chambers 20 from the outside of the tire, ventilation of the plurality of air chambers 20 by the ventilation member 10 can be permitted. This improves the convenience of the multi-chamber tire 1 including the plurality of air chambers 20.

A method of controlling a ventilation member 10 according to an embodiment of the present invention is a method of controlling the ventilation member 10 in the multi-chamber tire 1 described above, in which a fluid from at least one of the plurality of air chambers 20 is a tire. When a predetermined condition, which indicates that the air leaks to the outside, is satisfied, a step of interrupting ventilation between the plurality of air chambers 20 by the ventilation member 10, and when the predetermined condition is not satisfied, Allowing ventilation between the plurality of air chambers 20 by the ventilation member 10. According to such a configuration, when air leaks from the at least one of the plurality of air chambers 20 to the outside of the tire due to tire damage such as puncture, the ventilation member 10 blocks ventilation between the plurality of air chambers 20, Alternatively, when air is being injected into the at least one of the plurality of air chambers 20 from the outside of the tire, ventilation of the plurality of air chambers 20 by the ventilation member 10 can be permitted. This improves the convenience of the multi-chamber tire 1 including the plurality of air chambers 20.

Although the present invention has been described based on the drawings and the embodiments, it should be noted that those skilled in the art can easily make various variations and modifications based on the present invention. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the configurations or functions included in each embodiment can be rearranged so as not to logically contradict. Further, the configurations, functions, etc. included in each embodiment can be used in combination with other embodiments, and a plurality of configurations, functions, etc. can be combined into one, divided, or a part thereof can be omitted. It is possible to

For example, in the present invention, the tire 1 has been described as including the two partition walls 30 on the inner wall surface of the tire, but the present invention is not limited to this. For example, the tire 1 can be provided with one or three or more partition walls 30 on the inner wall surface of the tire. Alternatively, in order to form the air chamber 20 that is not in contact with the inner wall surface of the tire 1, the tire 1 may be provided with the partition wall 30 that is connected only to the other partition wall 30 and is not connected to the tire inner wall surface. it can. In this way, the number, volume and shape of the air chambers 20 formed in the tire inner cavity can be arbitrarily set.

Further, for example, in the present invention, the tire 1 has been described as having a configuration symmetrical with respect to the tire equatorial plane CL, but the present invention is not limited to this. For example, the two air chambers 20a and 20b, one provided on each of the pair of sidewall portions 3 on the tire inner wall surface side, may be different from each other in at least one of their volumes and shapes. ..

Further, for example, in the present invention, the tire 1 has been described as being filled with air, but the present invention is not limited to this. For example, the tire 1 and thus the air chamber 20 of the tire 1 can be filled with a gas such as nitrogen. Further, for example, the tire 1 and thus the air chamber of the tire 1 can be filled not only with gas but also with fluid such as liquid, gel-like substance, or granular material.

Further, for example, in the present invention, the case where the reinforcing layer 8 is used as the partition wall 30 has been described, but it is not limited to this. For example, the partition wall 30 can be made of a member other than the reinforcing layer 8. For example, when the tire 1 includes a tube, the inner cavity of the tire 1 can be divided into a plurality of spaces by the tube. For example, by providing one or more partition walls 30 inside one tube that is in close contact with the inner wall surface of the tire 1, a plurality of air chambers 20 can be formed inside the tire 1. Alternatively, by providing a plurality of tubes in the inner cavity of the tire 1, a plurality of air chambers 20 can be formed inside the tire 1. In such a case, a part of the outer wall of the tube functions as the partition wall 30.

1: multi-chamber tire, 2: bead portion, 2a: bead core, 2b: bead filler, 3: sidewall portion, 4: tread portion, 5: carcass, 5a: carcass main body portion, 5b: carcass folding portion, 6: belt , 7: inner liner, 8: reinforcing layer, 9a: first connecting portion, 9b: second connecting portion, 10 (10a, 10b): ventilation member, 11 (11a, 11b): detecting portion, 20 (20a, 20b) , 20c): air chamber, 30 (30a, 30b): partition wall, 40: rim, 41: valve

Claims (9)

A partition wall that forms a plurality of air chambers adjacent to each other in the tire lumen,
A ventilation member that is provided on the partition wall and connects the plurality of air chambers to allow ventilation.
Equipped with
The ventilation member indicates that fluid is leaking from the at least one air chamber of the plurality of air chambers to the outside of the tire, and regulates ventilation between the plurality of air chambers based on a predetermined condition. Multi-chamber tires. The ventilation member blocks ventilation between the plurality of air chambers when the predetermined condition is satisfied, and prevents ventilation between the plurality of air chambers when the predetermined condition is not satisfied. The multi-chamber tire according to claim 1, which is allowed. The multi-chamber tire according to claim 1 or 2, further comprising a detection unit for detecting whether or not the predetermined condition is satisfied. The multi-chamber tire according to claim 3, wherein the detection unit includes a pressure sensor. The multi-chamber tire according to claim 3, wherein the detection unit includes a flow meter. The multi-chamber tire according to claim 3, wherein the detection unit includes a communication unit. The ventilation member used for the multi-chamber tire according to any one of claims 1 to 6. A method for controlling an internal pressure of a multi-chamber tire according to any one of claims 1 to 6,
Ventilation between the plurality of air chambers is performed by the ventilation member when a predetermined condition indicating that fluid is leaking from the at least one air chamber of the plurality of air chambers to the outside of the tire is satisfied. The step of shutting off,
Allowing the ventilation between the plurality of air chambers by the ventilation member when the predetermined condition is not satisfied,
And a method for controlling an internal pressure of a multi-chamber tire. A method for controlling the ventilation member in the multi-chamber tire according to any one of claims 1 to 6,
Ventilation between the plurality of air chambers is performed by the ventilation member when a predetermined condition indicating that fluid is leaking from the at least one air chamber of the plurality of air chambers to the outside of the tire is satisfied. The step of shutting off,
Allowing the ventilation between the plurality of air chambers by the ventilation member when the predetermined condition is not satisfied,
A method for controlling a ventilation member, comprising:

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