Novel multi-air-chamber wheel

Abstract

The utility model discloses a novel multi-air-chamber wheel which comprises a tire and a rim, the tire is a multi-air-chamber tubeless tire and is composed of a plurality of air chambers which are arranged in the axial direction, each air chamber is provided with an isolation ring so that each air chamber can form a relatively closed space, the rim is composed of a rim and a spoke, and the rim and the spoke are arranged in a staggered mode. The rim part is designed to be of a concave air storage structure in the radial direction; the concave air storage structure and the isolation ring form a relatively closed air storage chamber, an air inlet valve and an exhaust valve are installed on the isolation ring, and when the pressure in the tire air chamber exceeds a set opening value, the air chamber exhaust valve automatically exhausts air and relieves pressure. According to the utility model, other intact tire air chambers can be ensured to continuously run when one tire air chamber leaks or bursts, so that the safety of a vehicle is protected. Besides, in the running process of the vehicle, when part of the air chambers exceed the safety pressure value due to the conditions of overweight, jolting, pit passing, high temperature and the like, all the air chambers can automatically exhaust and relieve pressure towards the concave air storage structure through the exhaust valves, and tire burst caused by overlarge pressure in the air chambers is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wheels, and in particular to a novel multi-chamber wheel. Background Technology

[0002] As a modern means of transportation, automobiles bring great convenience to people in modern life, but they also bring many safety accidents.

[0003] As a crucial component of a car, wheels are closely related to the safety of drivers and passengers, especially given the high-speed contact between tires and the road surface, where safety is of paramount importance.

[0004] Tire blowouts are a frequent occurrence at high speeds, causing vehicles to veer off course and potentially leading to serious accidents. Therefore, engineers have explored various methods to design safer tires. Common single-chamber run-flat tires reduce the vehicle's deviation angle during a blowout by increasing the rim diameter and aspect ratio, but this does not eliminate the risk of a blowout entirely.

[0005] Existing multi-chamber tires use a direct inflation method for each chamber, which can ensure normal tire operation for a short period even if some chambers leak air. However, this multi-chamber tire has a design flaw: it can only take in air but cannot expel it. During vehicle operation, conditions such as overloading, bumps, driving over potholes, and high temperatures may cause some chambers to exceed the safe pressure value, resulting in a tire blowout because the internal air cannot be expelled. Utility Model Content

[0006] The purpose of this invention is to provide a novel multi-chamber wheel to solve the problems existing in the multi-chamber tires of the prior art and to achieve tire safety.

[0007] The novel multi-chamber wheel provided by this utility model adopts the following technical solution:

[0008] A novel multi-chamber wheel includes a tire, a rim, and spokes. The tire is a multi-chamber tubeless tire, consisting of multiple axially arranged chambers. Each chamber is composed of a tire crown and a tire sidewall, and each chamber is equipped with an isolation ring, making each chamber a relatively enclosed space. The rim consists of a rim and spokes, and the rim portion is radially designed with a concave air storage structure. One or more sets of intake and exhaust valves are installed on the isolation ring. When the pressure in the tire chamber exceeds a set opening value, the chamber exhaust valve automatically releases air and relieves pressure.

[0009] Preferably, the insulating ring is a low-density rigid ring-shaped material, on which one or more sets of intake valves and exhaust valves are symmetrically installed. Its axial cross-section shows a wide outer diameter and a narrow inner diameter, and both the left and right sides are concave. The tire bead is the bottom part of the tire sidewall, and its axial cross-section is teardrop-shaped. The concave left and right sides of the insulating ring match the curvature of the tire bead.

[0010] Preferably, the intake valve and the exhaust valve are one-way pressure valves, and their pressure valve opening values ​​are equal.

[0011] Furthermore, the opening values ​​of the air pressure valves for both the intake and exhaust valves are the upper limits of the safe operating air pressure for multi-chamber tires.

[0012] Preferably, the concave air storage structure, the tire bead, and the insulating ring form a relatively sealed air storage chamber, and the concave air storage structure is connected to the outside through an inflation nozzle.

[0013] Preferably, the tire has grooves, which are formed between the crown portions of two adjacent air chambers of the multi-chamber tire, along the radial direction of the multi-chamber tire, with the depth exceeding the thickness of the crown portion.

[0014] As a further optimization of the above technical solutions, a detachable pressure plate is fixed to the outer side of the wheel rim.

[0015] Preferably, the pressure plate has multiple pressure plate bolt holes for fixing the pressure plate, and a pressure plate rubber ring groove is provided on the outer diameter of the pressure plate bolt holes. The wheel rim is provided with a wheel rim rubber ring groove, and the pressure plate rubber ring groove is aligned with the wheel rim rubber ring groove for installing the sealing rubber ring.

[0016] Preferably, multiple grilles are provided at the maximum outer diameter of the wheel rim. The grilles are axial rod-shaped structures integrated with the wheel rim, and there is a certain distance of hollow space between each adjacent grille.

[0017] In summary, this utility model has the following beneficial technical effects:

[0018] 1. This multi-chamber tire ensures that if one tire chamber leaks or blows out, the other intact tire chambers can continue to operate, improving safety after a tire blowout and protecting the safety of passengers and the vehicle. Furthermore, during vehicle operation, if overloading, bumps, driving over potholes, or high temperatures cause some chambers to exceed safe pressure values, each chamber can automatically release pressure through the vent valve on the isolation ring, preventing excessive internal pressure from causing a blowout.

[0019] 2. The main body of the air chamber is a metal structure, which has a greater air pressure resistance than the tire. The air chamber structure can withstand the air pressure discharged from each air chamber of a multi-chamber tire when it exceeds the safe pressure value, and the metal structure has a better heat dissipation effect.

[0020] 3. Deep grooves can enhance the vehicle's directional control, drainage, and heat dissipation.

[0021] 4. Improve the ease of maintenance of existing tire technologies. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the overall structure of the embodiment of the application;

[0023] Figure 2 This is a partial structural schematic diagram of an embodiment of the application;

[0024] Figure 3 This is a schematic diagram of the rim structure of an embodiment of the application;

[0025] Figure 4 This is a schematic diagram of the assembly of the insulating ring and the tire;

[0026] Figure 5 This is a schematic diagram of the pressure plate structure in an embodiment of the application;

[0027] Figure 6 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 001 Tire crown 002 Tire sidewall 003 Tire bead

[0030] 101 Groove; 102 Multi-chamber tire; 103 Insulating ring; 104 Intake valve; 105 Exhaust valve

[0031] 201 Wheel rim 202 Air chamber 203 Pressure plate 204 Sealing ring

[0032] 205 Pressure plate rubber ring groove; 206 Wheel rim rubber ring groove; 207 Pressure plate bolt

[0033] 208 Air inflator; 209 Grille; 210 Rim bolt holes; 211 Grille rubber patch

[0034] 212 spokes, 213 rim, 214 pressure plate bolt holes Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0036] This application discloses a novel multi-chamber wheel. (Refer to...) Figure 1-6A novel multi-chamber wheel includes a tire, a rim 201, and spokes 212. The tire is a tubeless multi-chamber tire 102, consisting of three axially arranged chambers. Each chamber comprises a crown 001 and a sidewall 002, and each chamber is equipped with an isolation ring 103, creating a relatively enclosed space. The rim 201 consists of a rim 213 and spokes 212. The rim 213 is the outer annular portion of the rim 201, directly contacting the tire. The spokes 212 are the supporting structure connecting the rim and the hub. The rim 213 is radially designed as a concave air storage structure. A set of intake valves 104 and exhaust valves 105 are installed on the isolation ring 103. When the pressure in the tire chamber exceeds a set opening value, the exhaust valves 105 automatically release pressure. This multi-chamber tire ensures that if one tire chamber leaks or bursts, the other intact tire chambers can continue to operate, protecting the safety of the driver, passengers, and vehicle. In addition, during vehicle operation, if overloading, bumps, potholes, high temperatures, or other conditions cause some air chambers to exceed the safe pressure value, each air chamber can automatically release pressure through the exhaust valve into the concave air storage structure to prevent excessive pressure inside the air chamber from causing a tire blowout.

[0037] The insulating ring 103 is a low-density, rigid ring-shaped material. In this embodiment, it is made of aluminum alloy or carbon fiber. A set of intake valves 104 and exhaust valves 105 are symmetrically mounted on the insulating ring 103. Its axial cross-section shows a wide outer diameter and a narrow inner diameter, roughly inverted trapezoidal in shape, with concave designs on both sides and the top and bottom. The tire bead 003 is the bottom part of the tire sidewall 002, and its axial cross-section is teardrop-shaped. The concave sides of the insulating ring 103 match the curvature of the tire bead 003. The concave design on both sides is to better tighten and compress the tire bead portion of the multi-chamber tire 102, preventing the tire sidewall from coming off the bead when the tire pressure is too low. The insulating ring 103 has the same minimum inner diameter as a single chamber of the multi-chamber tire 102. The insulating ring 103 is an important component of the tire part described in this utility model. The function of the insulating ring is:

[0038] 1) The air chambers and the air storage chambers 202 of the multi-chamber tire 102 are independently and relatively sealed.

[0039] 2) Sidewall support and positioning of each chamber of the multi-chamber tire 102.

[0040] 3) Transmit the pressure of pressure plate 203.

[0041] The intake and exhaust valves refer to the intake and exhaust of air for the chambers of the multi-chamber tire 102. The intake valve 104 and exhaust valve 105 are one-way pressure valves, and their opening values ​​are equal, both representing the upper limit of the safe operating pressure for the multi-chamber tire 102. The valve reset mechanism can be a coil spring or a leaf spring design. The intake valve 104 is opened by the air pressure in the air reservoir 202, while the exhaust valve 105 is opened by the air pressure from each chamber of the multi-chamber tire 102 acting on the exhaust valve 105 of that chamber. The function of the intake valve 104 is to inflate each chamber of the multi-chamber tire 102 using its respective intake valve. The function of the exhaust valve 105 is to exhaust excess pressure from each chamber of the multi-chamber tire 102 using its respective exhaust valve.

[0042] The concave air storage structure, tire bead 003, and insulating ring 103 form a relatively sealed air storage chamber 202, wherein the concave air storage structure is connected to the outside through an inflation nozzle. The space of the air storage chamber can also extend to the sealed cavity of the fan-shaped spokes 212, resulting in better heat dissipation. The function of the air storage chamber:

[0043] 1) It serves as a common air intake passage for all chambers of a multi-chamber tire.

[0044] 2) Bearing the air pressure discharged from each chamber of a multi-chamber tire when it exceeds the safe pressure value.

[0045] 3) Because the main body of the air chamber is a metal structure, it has a better heat dissipation effect than a multi-chamber tire. Therefore, the air in each chamber of the multi-chamber tire forms a hot and cold circulation through the air intake and exhaust valves, which dissipates heat and cools down each chamber of the multi-chamber tire.

[0046] The tire is provided with grooves 101, which are at least one wide and deep groove 101 formed radially between the crown 001 portions of two adjacent chambers of the multi-chamber tire 102. Compared to single-chamber tires, multi-chamber tires have a larger space between the crown portions of adjacent chambers, and the groove depth can exceed the thickness of the crown portion. Deep grooves can enhance the vehicle's directional stability and improve the drainage performance of low-profile tires on wet roads. Furthermore, the wide and deep grooves increase the contact area between the tire crown and the air, which also helps with heat dissipation.

[0047] A detachable pressure plate 203 is fixed to the outer side of the wheel rim 213. The pressure plate 203 has multiple pressure plate bolt holes 214. Pressure plate bolts 207 engage with wheel rim bolt threaded holes 210 through the pressure plate bolt holes 214 to install and tighten the pressure plate 203. A pressure plate rubber ring groove 205 is located on the outer diameter of the pressure plate bolt holes 214. A wheel rim rubber ring groove 206 is provided on the wheel rim 201, which engages with the pressure plate rubber ring groove 205. The pressure plate rubber ring groove 205 and the wheel rim rubber ring groove 206 are aligned to install a sealing rubber ring 204. The sealing rubber ring 204 is a mature technology rubber ring-shaped material installed between the pressure plate 203 and the wheel rim 201. Its function is to seal the gap between the pressure plate 203 and the wheel rim 201 to prevent air leakage from the air inside the air chamber 202.

[0048] Function of the pressure plate:

[0049] 1) Equip multi-chamber tires and air separator rings.

[0050] 2) Tighten the sealing ring while tightening the bead of the multi-chamber tire to prevent air leakage from occurring in the gap between the pressure plate and the rim.

[0051] 3) While the pressure plate is pressing the bead of the multi-chamber tire, the pressure of the pressure plate is transmitted to the spacer ring through the bead, and then the spacer ring transmits the pressure to the next bead and the next spacer ring, until the pressure of the pressure plate is transmitted to the fixed wheel edge on the other side.

[0052] Multiple grilles 209 are provided at the maximum outer diameter of the wheel rim 213. Each grille 209 is an axial rod-shaped structure integrated with the wheel rim 201, and there is a certain distance of hollow space between each adjacent rod-shaped structure.

[0053] The function of grilles:

[0054] 1) Supports multi-chamber tires and air gaps.

[0055] 2) Positioning of multi-chamber tires and air gap rings.

[0056] 3) It strengthens the maximum diameter section of the wheel rim.

[0057] The outer surface of the grille 209 is covered with a grille adhesive patch 211, which is an adhesive sheet. It is pasted on the outer surface of each grille to reduce the friction noise generated by the movement of the isolation ring 103 and the grille 209.

[0058] The assembly method and steps of this utility model for a novel multi-chamber wheel are as follows: First, each independent isolation ring 103, equipped with an intake valve 104 and an exhaust valve 105, is installed into each independent tire chamber of the multi-chamber tire 102. The number of isolation rings corresponds to the number of chambers in the multi-chamber tire 102. Then, the multi-chamber tire 102 with isolation rings 103 is fitted onto the grille 209 of the rim 201, where the grille adhesive patch 211 is attached. Next, the sealing ring 204 is installed into the rim ring groove 206 of the rim 201. Finally, the pressure plate bolt hole 214 is aligned with the rim bolt thread hole 210 of the rim 201, and the pressure plate bolt 207 is screwed through the pressure plate bolt hole 214 into the rim bolt thread hole 210 of the rim 201. The pressure plate bolt is tightened, pressing the pressure plate 203 firmly onto the tire bead 003 and the sealing ring 204 of the multi-chamber tire. The assembly is then complete.

[0059] This operation requires no special installation tools; ordinary drivers and passengers can complete the installation and removal using a regular wrench.

[0060] The working principle of the novel multi-chamber wheel described in this utility model:

[0061] 1. Inflation stage: The air is first inflated into the air storage chamber 202 through the air inflation nozzle 208 on the concave air storage structure of the air storage chamber 202. At this time, the pressure in the air storage chamber 202 is low and has not reached the safe upper limit value for the use of the multi-chamber tire 102, that is, when the opening value of the air intake valve 104 on the isolation ring 103 is not reached, the air intake valve 104 does not work. As inflation continues, the pressure in the air storage chamber 202 gradually increases. When the opening value of the air intake valve 104 is reached, the air intake valve 104 of each air chamber of the multi-chamber tire 102 automatically opens. At this time, the air in the air storage chamber 202 enters each air chamber of the multi-chamber tire 102 through the air intake valve 104. During the initial inflation phase of each chamber of the multi-chamber tire 102, the air pressure is low and has not reached the opening value of the exhaust valve 105. The exhaust valve 105 is in the closed state, and inflation continues. As the air pressure in each chamber of the multi-chamber tire 102 continues to rise and exceeds the safe operating value of the multi-chamber tire 102, the exhaust valve 105 will automatically open to release pressure. The gas discharged from the exhaust valve 105 returns to the air storage chamber 202, causing the air pressure in the air storage chamber 202 to rise instantaneously. This indicates that the air pressure has reached the safe upper limit for the use of the multi-chamber tire, and the inflation phase is complete.

[0062] 2. Normal Driving Phase: During normal driving, the multi-chamber tire 102 experiences intense friction between its tread 001 and the road surface, causing its temperature to rise. This temperature increase also raises the air pressure in each chamber. As the temperature of the gas in each chamber gradually rises, it may exceed the safe operating limit of the multi-chamber tire 102. Once this limit is exceeded, the exhaust valve 105 automatically opens to release pressure. Excess gas generated by the temperature increase is then discharged into the air reservoir 202 through the exhaust valve 105. Because the multi-chamber tire 102 is made of rubber, its heat dissipation rate is relatively slow, while the air reservoir 202, with its main structure made of metal, dissipates heat much faster. Therefore, the temperature inside the air reservoir 202 is lower than the gas temperature in each chamber of the multi-chamber tire 102, creating a temperature difference. Because the gas discharged from the exhaust valve 105 increases the gas pressure in the air storage chamber 202, when the gas pressure in the air storage chamber 202 exceeds the opening value of the intake valve 104, the intake valve 104 will also open automatically. The higher temperature gas discharged from the exhaust valve 105, after being mixed with the cold air in the air storage chamber 202, is then injected back into each air chamber of the multi-chamber tire 102 through the intake valve 104. This creates an exchange phenomenon between the hot air in each air chamber of the multi-chamber tire 102 and the cold air in the air storage chamber 202. This exchange phenomenon causes the gas in each air chamber of the multi-chamber tire 102 to form an internal circulation with the gas in the air storage chamber 202. This internal circulation exchange phenomenon between the cold gas in the air storage chamber 202 and the hot gas in each air chamber of the multi-chamber tire 102 will have a cooling effect on each air chamber of the multi-chamber tire 102, and at the same time, it will also have a cooling effect on the multi-chamber tire 102.

[0063] This phenomenon of internal circulation and exchange of hot and cold gases occurs frequently during the normal operation of the tire, rather than being an occasional, infrequent occurrence. Uneven road surfaces and the impact of the tires on the road caused by bumps will cause the gas pressure in each chamber of the multi-chamber tire 102 to rise instantaneously, opening the exhaust valve 105 to exhaust gas into the air storage chamber 202. The air storage chamber 202, receiving the gas discharged from the exhaust valve 105, will also experience an instantaneous increase in air pressure, opening the intake valve 104 to inflate each chamber of the multi-chamber tire 102. This high-frequency internal circulation and exchange of hot and cold gases will have a good cooling effect on the multi-chamber tire 102.

[0064] 3. Abnormal driving stage: Abnormal driving refers to the tire being punctured by a sharp object, causing leakage, or being punctured or cut by a sharp object, causing a tire blowout. Whether it is a puncture and leakage or a cut and blowout, it occurs at a certain point in the tire. In other words, compared to multi-chamber tires, it is more likely to occur in one of the chambers, while the other chambers remain intact and can continue to operate, protecting the safety of the driver and passengers and the vehicle. This is the original intention of many engineers in designing multi-chamber tires.

[0065] During tire operation, if a sharp object punctures or cuts one of the chambers of the multi-chamber tire 102, causing a leak or blowout, the gas pressure in that damaged chamber will rapidly drop to atmospheric pressure, far below the normal safe operating pressure. At this point, the pressure in that chamber prevents it from opening the exhaust valve 105, so the pressure in the damaged chamber does not affect its exhaust valve 105. Meanwhile, the pressure in the reservoir 202, regardless of its magnitude, only affects the intake valve 104 and not the exhaust valve 105, so the exhaust valve 105 of the damaged chamber remains completely closed. However, the intake valve 104 of the damaged tire chamber remains operational due to the pressure in the reservoir 202. The other intact tire chambers of the multi-chamber tire 102 also operate normally. The vehicle continues to run supported by the intact air chambers of the multi-chamber tire 102. As the wheels continue to run, the intact air chambers of the multi-chamber tire 102 are affected by the unevenness of the road surface and the impact with the road surface. Due to these factors, the air pressure in the intact tire chambers of the multi-chamber tire 102 will also increase. If it exceeds the upper limit of safe use, the exhaust valve 105 of the air chamber will open to release air pressure into the air storage chamber 202. At this time, the air storage chamber 202 will be subjected to the increased air pressure of the gas discharged from the intact air chambers of the multi-chamber tire 102, which will exceed the opening value of the intake valve 104 and thus open the intake valve 104. It is particularly important to emphasize that not only are the intake valves 104 of the intact air chambers of the multi-chamber tire 102 opened, but all intake valves 104, including those of the damaged air chambers of the multi-chamber tire 102, are opened. This causes a portion of the gas in the air reservoir 202 to enter the damaged air chambers of the multi-chamber tire 102 and leak out along the damaged sections of those chambers. This leakage continues as the wheel continues to run. When the leaked gas causes the air pressure in the air reservoir 202 and the intact air chambers of the multi-chamber tire 102 to fall below the safe operating limit of the multi-chamber tire 102, i.e., when the opening values ​​of the intake valves 104 and exhaust valves 105 are reached, all intake valves 104 and exhaust valves 105 will cease operation and will no longer open. At this point, each intact air chamber of the multi-chamber tire 102 can continue to operate safely below the upper limit of safe use. However, because the intake valve 104 and exhaust valve 105 between the intact air chambers and the air storage chamber 202 of the multi-chamber tire 102 cease to function, the function of internal circulation and heat dissipation of hot and cold air from the air storage chamber 202 to the intact air chambers of the multi-chamber tire 102 is lost. Therefore, the wheel cannot travel long distances for extended periods. The travel time and distance depend on the heat resistance of the multi-chamber tire 102.

[0066] Once you reach a safe location, you can disassemble and repair it yourself on the spot without having to go to a professional location to find a specialist to use special tools for repair.

[0067] Since the wheel described in this invention uses a tire with multiple air chambers, it must be a tire with a high aspect ratio, and therefore, it must be matched with a rim with a large diameter. This combination of a high aspect ratio tire and a large diameter rim inevitably provides the vehicle with good stability. Furthermore, since the multi-chamber tire 102 of this invention has one or more radially wider and deeper grooves 101 between the two adjacent air chambers, compared to existing technologies, the depth of these grooves can exceed the thickness of the multi-chamber tire's tread. These wide and deep grooves significantly improve the vehicle's directional stability and water drainage compared to existing tire technologies.

[0068] In summary, the wheel described in this utility model fully possesses the five major technical characteristics of large rim, large aspect ratio, directionality, stability, and drainage, and fully meets the technical requirements for high-quality wheels.

[0069] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A new type of multi-chambered wheel, comprising a tire, a rim, characterized in that: the tire is a multi-chambered tubeless tire, which is composed of a plurality of axially arranged chambers, each chamber is composed of a crown and a sidewall, and each chamber is equipped with a spacer ring, so that each chamber forms a relatively closed space; the rim is composed of a rim and spokes, and the rim part is designed as a concave gas storage structure in the radial direction; on the spacer ring, one or more sets of air inlet valves and air outlet valves are installed, which automatically vent and relieve pressure when the pressure in the tire chamber exceeds the set opening value.

2. A new multi-chambered wheel as claimed in claim 1, wherein: The spacer ring is a low-density hard ring, and one or more sets of air inlet valves and air outlet valves are installed on the spacer ring in axial symmetry. Its axial cross-section shows that the outer diameter is wide, the inner diameter is narrow, and the left and right sides are concave. The bead is the bottom part of the sidewall, and its axial cross-section is drop-shaped. The concave left and right sides of the spacer ring cooperate with the curvature of the bead.

3. A new multi-chambered wheel as claimed in claim 1, wherein: The air inlet valve and the air outlet valve are one-way air pressure valves, and the air pressure valve opening values of the two are equal.

4. A new multi-chambered wheel as claimed in claim 3, wherein: The air pressure valve opening values of the air inlet valve and the air outlet valve are both the upper limit of the safe use pressure of the multi-chambered tire.

5. A new multi-chambered wheel as claimed in claim 1, wherein: The concave gas storage structure, the bead, and the spacer ring form a relatively closed gas storage chamber, and the concave gas storage structure is connected with the outside through the air inlet.

6. A new multi-chambered wheel as claimed in claim 1, wherein: The tire is provided with a groove, which is a wide and deep groove opened between the crown parts of two adjacent chambers of the multi-chambered tire along the radial direction of the multi-chambered tire, and the depth can exceed the thickness of the crown part.

7. A new multi-chambered wheel as claimed in any one of claims 1 to 6, wherein: The outer side of the rim is fixed with a detachable pressure plate.

8. A new multi-chambered wheel as claimed in claim 7, wherein: The pressure plate is provided with a plurality of pressure plate bolt holes for fixing the pressure plate, and a pressure plate rubber ring groove is arranged on the outer diameter part of the pressure plate bolt hole. A rim rubber ring groove is arranged on the rim, and the pressure plate rubber ring groove is opposite to the rim rubber ring groove to install a sealing rubber ring.

9. A new multi-chambered wheel as claimed in claim 7, wherein: A plurality of gratings are arranged on the maximum outer diameter part of the rim, and the gratings are axial rods integrated with the rim. There is a certain distance between each adjacent grating.

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