TWM517110U - Tire structure - Google Patents

Description

Tire construction

The present invention relates to a tire, and more particularly to a tire construction that can support the tire to continue safely for a while after the tire has burst.

A tire is a ground-rolled, circular elastic rubber article that is assembled on various vehicles or machinery. It is usually mounted on a metal rim (also known as a wheel hub). The tire can support the body, cushioning external impacts, achieving contact with the road surface and ensuring the driving performance of the vehicle. At present, most of the tires are pneumatic tires. Compared with solid tires, inflatable tires can provide passengers with better comfort and cushioning effect, in addition to lighter weight, but if the inflatable tires are If the vehicle is damaged while driving, it will cause a puncture, which seriously affects the stability and safety of the vehicle. Therefore, how to reduce the damage caused by the tire puncture has been a problem that tire manufacturers have been trying to overcome.

In the published Chinese invention patent application, publication No. CN 1931614 A, a safety tire safety device for automobile tires is proposed, which has a cylindrical hard foam in which the center line is curved and the cross section is smaller than the inner diameter of the tire. Blocks, the first and the last of which form a ring which can be placed in the tire casing, and a fiber layer covering the outer surface of each of the above-mentioned rigid foam blocks is coated with an adhesive, and the sponge body in the tire casing is wrapped in The fiber layer is bonded to the outside of the fiber layer; thus, it can continue to travel for a while after the car bursts.

Currently used in vehicles, there is a run-flat tire, or explosion-proof tire, which strengthens the sidewall of the joint with the rim and can still be lost after losing the original tire pressure. Let the vehicle equipped with such a tire travel tens of kilometers to one hundred or two kilometers at a certain speed, and let the driver find a store that can repair or replace the tire; however, the disadvantage of the aforementioned pressure-loss running tire is that the strengthened sidewall And the tread integrally formed with it is hard and heavy, has poor comfort, and has poor grip and is more expensive than tires of the same grade and the same grade. Moreover, when the pressure loss continues to run under the condition of zero tire pressure, When the hard sidewall is in contact with the ground, when it encounters a pothole, it will directly impact the rim and cause damage. Therefore, there are still some shortcomings in use and it is necessary to improve it.

However, the tires on the road surface have been blown up for various reasons. There are many ways to avoid tire puncture or to make the tires of the puncture tires continue to travel for a while, but so far there is still no good solution.

One of the purposes of this creation is to solve the problems caused by the conventional pneumatic tires after the puncture.

In order to achieve the above object, the tire structure proposed by the present invention has the advantages of simple structure, low manufacturing cost and comfortable use, and can support the tire to continue safely traveling for a long distance after the tire has burst.

An embodiment of the present tire construction includes: a rim and a carcass wrapped around the outer circumference of the rim, a hollow inner cavity between the carcass and the rim, and at least a plurality of independent vents in the inner cavity A foamed elastomer.

In an embodiment of the present invention, the foamed elastomer is a rubber strip wrapped around the rim.

In an embodiment of the present invention, the foamed elastomer is a plurality of rubber and plastic balls disposed in the inner cavity of the carcass.

In an embodiment of the present invention, the foamed elastomer has a circular or elliptical cross-sectional shape.

In an embodiment of the present invention, wherein the inner cavity of the carcass comprises a inner tube carcass, the foamed elastomer is disposed in the inner tube carcass.

In an embodiment of the present invention, wherein the tire is in a normal state, the air pressure in the plurality of independent air holes of the foamed elastic body is balanced with the air pressure in the inner cavity of the carcass, and the foamed elastic body accounts for the cavity of the carcass. 30% to 90% of the area.

In an embodiment of the present invention, after the tire body of the tire has a puncture, the volume expansion of the foamed elastomer is 1.2 to 4 times that of the pressure balance state.

It can be understood from the content of the above-mentioned creation that the tire structure proposed by the present invention has the advantages of compact structure, low manufacturing cost and comfortable use, and can support the tire to continue safely traveling for a long time after the tire has burst. And efficacy.

The specific implementation manners of the present creation, as well as its technical features and effects, will be described below in conjunction with the drawings.

10‧‧‧ rims

11‧‧‧ Valves

20‧‧‧Carcass

21‧‧‧ lumen

30‧‧‧Foaming elastomer

40‧‧‧ inner body carcass

Fig. 1 is a cross-sectional structural view showing an embodiment of a novel tire structure.

Fig. 2 is a schematic view showing the construction of the embodiment of Fig. 1 showing the cross-sectional structural view of the foamed elastomer when it is placed in the inner cavity of the carcass and the inner cavity of the carcass has not been inflated.

Figure 3 is a schematic view showing the construction of the embodiment of Figure 2, showing the foamed elastomer being placed A cross-sectional structural view of the inner cavity of the carcass and the initial filling of the inner cavity of the carcass.

Figure 4 is a schematic view showing the construction of the embodiment of Figure 3, showing the gas pressure in the plurality of independent pores of the foamed elastomer and the gas pressure in the inner cavity of the carcass after the cavity of the carcass is completed for a period of time after completion of inflation. Maintain a balance and achieve a cross-sectional structure diagram when the pressure is balanced.

Fig. 5 is a schematic view showing the construction of the embodiment of Fig. 4, showing a structural sectional view in which the foamed elastic body expands and supports the carcass after the tire body of the tire has been blown.

Fig. 6 is a sectional structural view showing another embodiment of the construction tire structure.

Fig. 7 is a sectional structural view showing another embodiment of the construction tire structure.

Fig. 8 is a sectional structural view showing another embodiment of the construction tire structure.

Referring first to Figure 1, an embodiment of the present tire construction includes a rim 10 and a carcass 20 wrapped around the periphery of the rim 10 having a hollow interior between the carcass 20 and the rim 10. 21, at least one foamed elastic body 30 having a plurality of independent pores is placed in the inner chamber 21.

In an embodiment of the present invention, the foamed elastic body 30 is an elastic rubber strip made of any one of ethylene propylene diene monomer and enamel rubber. Among them, EPDM is a terpolymer of ethylene, propylene and a non-conjugated diene, and ruthenium rubber is a rubber in which the main chain is composed of an alternating oxime and an oxygen atom, and a ruthenium atom is usually bonded with two organic groups. Ordinary tantalum rubber is mainly composed of a helium-oxygen chain link containing a methyl group and a small amount of a vinyl group. The introduction of phenyl can improve the high and low temperature resistance of bismuth rubber, and the introduction of trifluoropropyl and cyano can improve the temperature resistance and oil resistance of bismuth rubber. The heat resistance of bismuth rubber is also outstanding. It can work for a long time at 180 °C. It can still withstand elasticity for several weeks or more at a temperature slightly higher than 200 °C. The transient state can withstand high temperatures above 300 °C. In other embodiments of the present invention, the foamed elastomer 30 having a plurality of independent pores may also be made of other polymeric materials by a foaming process.

The carcass 20 is generally of a rubber material, and a typical configuration of the generally tubeless carcass 20 is illustrated in FIG. 1 but is not intended to limit the embodiment of the carcass 20. The rim 10 generally has a valve 11 that can communicate with the inner chamber 21 to inflate the inner chamber 21 through the valve 11. In an embodiment of the present invention, the foamed elastic body 30 is a rubber strip wound around the rim 10, wherein the cross-sectional shape of the foamed elastic body 30 is preferably circular or elliptical. In other embodiments of the present invention, the cross-sectional shape of the foamed elastomer 30 may also be other shapes that are adapted to the cross-sectional shape of the inner cavity 21.

In an embodiment of the present tire construction, the foamed elastomer 30 placed in the interior 21 of the carcass 20 is at least one strip of rubber wrapped around the rim 10 (see Figure 1); In another embodiment of the construction, the foamed elastomer 30 placed in the carcass 20 is two or more rubber strips wrapped around the rim 10 (see Figure 6).

In another embodiment of the present tire construction, the carcass 20 may also be a carcass 20 having an inner tube, as shown in FIG. 7, wherein the inner cavity 21 of the carcass 20 includes a inner tube carcass 40, The foamed elastic body 30 is disposed in the inner tube carcass 40, and the inner tube carcass 40 can be similarly inflated by the valve 11.

Please refer to FIG. 8 , which is another embodiment of the present tire construction. The foamed elastic body 30 is a plurality of rubber and plastic balls disposed in the inner cavity 21 of the carcass 20 , in other words, as depicted in FIG. 8 . The illustrated embodiment replaces the aforementioned rubber strip wrapped around the rim 10 with a plurality of rubber plastic balls. The rubber plastic ball and the rubber plastic strip are only different in shape. In addition, the rubber plastic ball and the rubber plastic strip are foamed elastic bodies 30 having a plurality of independent air holes. Similarly, a plurality of rubber and plastic balls can also be installed on the carcass 20 having the inner tube. Specifically, a plurality of rubber plastic balls are placed in the inner tube carcass 40, and the inner wall of the carcass 20 is used during the running of the tire. Form friction, relative Said, the rubber strip around the rim can avoid friction, longer life and more stable.

The mode of operation and function of the tire according to the present invention are described below. For the tire construction that has been manufactured, when the tire is not inflated, the foamed elastic body 30 having a plurality of independent pores or the inner tube carcass 40 having the foamed elastic body 30 is placed in the carcass 20 and the rim 10 The inner cavity 21, at which time the foamed elastic body 30 is in a loose state, thereby facilitating assembly, it is worth noting that when the inner cavity 21 or the inner tube carcass 40 is not inflated, as shown in Fig. 2, foaming The air pressure in the plurality of independent air holes of the elastic body 30 is balanced with the air pressure in the inner cavity 21 of the carcass 20 or the inner carcass 40. In a preferred embodiment of the present invention, the foamed elastic body 30 occupies the carcass. The cross-sectional area of the lumen is 30% to 90%.

After the above-described assembly of the tire structure of the present invention is completed, the high-pressure gas is filled in the normal manner via the valve 11, and the foamed elastic body 30 is compressed and deformed by the high-pressure gas to be reduced in volume, as shown in FIG. The tire is normally used; when the tire is running or stopped, since the high pressure gas is always maintained in the inner cavity 21 of the carcass 20, the compressed foamed elastic body 30 at this time has gas permeability, and the inside of the foamed elastic body 30 The plurality of independent pores, due to the infiltration of the high pressure gas, cause the gas pressure in the plurality of independent pores inside the foamed elastic body 30 to coincide with the pressure of the high pressure gas in the inner chamber 21 of the carcass 20 or the inner tire carcass 40 to reach a pressure equilibrium state. As shown in Fig. 4, the foamed elastomer 30 is returned to its original shape or volume such that the air pressure in the plurality of independent pores inside the foamed elastic body 30 and the pressure in the inner chamber 21 or the inner tube body 40 A uniform high pressure state is maintained, at which time a plurality of independent high pressure pores are formed in the interior of the foamed elastomer 30. When the carcass 20 of the tire is instantaneously deflated or puncture, the high pressure gas originally stored in the inner cavity 21 of the carcass 20 or the inner tube carcass 40 leaks out of the carcass 20, so that the inner cavity 21 of the carcass 20 or It is the pressure drop in the inner tube carcass 40, since the gas pressure in the plurality of independent pores of the foamed elastic body 30 is greater than atmospheric pressure, Since the action of the pressure difference causes the foamed elastic body 30 to rapidly expand, the volume of the foamed elastic body 30 is rapidly enlarged and filled in the inner cavity 21 of the tire or the inner tube carcass 40 by the expanded hair. The foamed elastomer 30 supports the carcass 20 of the tire. As shown in Fig. 5, since the foamed elastomer 30 has a slow gas permeability, the high pressure gas in the plurality of independent pores of the foamed elastomer 30 takes a while to completely bleed out. Thus, the carcass 20 of the tire can continue to travel safely for a distance under the support of the foamed elastomer 30.

Further, in order to rationally design and reduce the friction between the foamed elastomer and the inner wall surface of the tire, in an embodiment of the present invention, the tire is in a normal state (filled with high pressure gas and reached a pressure equilibrium state), the foamed elastomer The air pressure in the plurality of independent air holes of 30 is balanced with the air pressure in the inner cavity 21 of the carcass 20, and the foamed elastic body 30 accounts for 30% to 90% of the sectional area of the inner cavity 21 of the carcass 20. In an embodiment of the present invention, after the tire carcass 20 of the tire has a puncture, the volume expansion of the foamed elastic body 20 is 1.2 to 4 times that of the pressure balance state. The foamed elastomer 30 can be determined by the choice of different materials to the proportion of the area in the inner cavity 21 of the carcass 20. Generally, when the carcass 20 of the tire bursts, the foamed elastic body 30 expands. The volume needs to ensure that the outer diameter of the supported carcass 20 is within a certain range of the original tire diameter, which is generally in the range of 80% to 120% of the original tire diameter.

In an embodiment of the present invention, when the foamed elastomer 30 is made of ethylene propylene diene rubber, the gas permeability is moderate, and the gas pressure of the high pressure gas is filled in the inner cavity 21 of the carcass 20 or the inner tire carcass 40. At 50 PSI, about 15 days of high pressure gas can penetrate into the plurality of independent pores of the foamed elastomer 30.

In another embodiment of the present invention, when the foamed elastic body 30 is made of ruthenium rubber, the inner cavity 21 of the carcass 20 or the inner tube carcass 40 is filled because of the high gas permeability of the ruthenium rubber. The high pressure gas has a gas pressure of 50 PSI, and it takes about one day and 95% of the high pressure gas to penetrate into the plurality of independent pores of the foamed elastomer 30.

Since the foamed elastomer 30 having a plurality of independent pores has a slow gas permeation property, the length of time during which the high pressure gas penetrates into the plurality of independent pores is equal to the length of time during which the high pressure gas is discharged. Therefore, it is possible to determine which material is used in the corresponding tire to form the foamed elastic body 30 depending on the specific use occasion (the length of time required for the tire carcass 20 to be maintained after the tire is blown up).

Further, the time during which the high-pressure gas penetrates into the plurality of independent pores of the foamed elastic body 30 is from one day to twenty days. The length of time that the high-pressure gas infiltrates into the plurality of independent pores is equal to the length of time in which the plurality of independent pores discharge the high-pressure gas. However, since the weight of the vehicle during the use of the tire accelerates the leakage of the high-pressure gas, it is necessary to ensure at least the weight of the foamed elastomer in the body. The high pressure air seepage time under the action is one hour to forty-eight hours.

Although the present invention has been disclosed above through the above embodiments, it is not intended to limit the creation of the present invention. Anyone skilled in the art can make some changes and refinements without departing from the spirit and scope of the present creation. The scope of patent protection is subject to the terms of the claims attached to this specification.

10‧‧‧ rims

11‧‧‧ Valves

20‧‧‧Carcass

21‧‧‧ lumen

30‧‧‧Foaming elastomer

Claims (8)

A tire construction comprising: a rim and a carcass wrapped around an outer circumference of the rim, the carcass and the rim having a hollow inner cavity in which at least a plurality of independent vents are placed A foamed elastomer. The tire construction of claim 1, wherein the foamed elastomer is a rubber strip surrounding the rim. The tire construction of claim 1, wherein the foamed elastomer is a plurality of rubber-plastic balls disposed in the inner cavity of the carcass. The tire construction according to claim 1, wherein the foamed elastic body has a circular or elliptical cross-sectional shape. The tire construction of claim 1, wherein the inner cavity of the carcass comprises a inner tube carcass, the foamed elastomer being disposed in the inner tube carcass. The tire construction of claim 5, wherein the foamed elastomer is a rubber strip or a plurality of rubber balls. The tire construction according to claim 1, wherein the foamed elastomer occupies the carcass when the gas pressure in the plurality of independent pores of the foamed elastomer reaches a pressure equilibrium state with the gas pressure in the inner cavity of the carcass The cross-sectional area of the lumen is 30% to 90%. The tire construction according to claim 7, wherein the volume expansion of the foamed elastomer after the puncture of the carcass is 1.2 to 4 times that of the pressure balance state.