Inflation-free tire

Abstract

The utility model relates to the technical field of tires, and particularly discloses a non-pneumatic tire which is characterized in that a tire body is provided with a closed cavity structure, the cavity structure penetrates through the interior of the tire body in the circumferential direction, the cavity structure is composed of a plurality of first cavities and a plurality of second cavities, the inner diameter of each first cavity is smaller than that of each second cavity, and the first cavities are communicated with the second cavities. And the first cavity is communicated between the two adjacent second cavities. According to the arrangement, the plurality of first cavities and the plurality of second cavities are connected in series to form a through cavity structure in the tire body, so that the weight of the tire body is reduced, and the radial rigidity of the tire body is reduced, so that the bumping feeling is reduced, the buffering performance of the tire body is improved, and the consumption of impact force energy is increased; and meanwhile, only one group of inner cavities are formed in the circumferential direction of the tire body in a penetrating mode, namely, the tire body corresponds to a group of middle molds in modeling during production and processing, the internal structure is further simplified, the technological process is simplified, and the yield and production efficiency of tire body production can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to an inflation-free tire. Background Art

[0002] At present, most of the tires in use are pneumatic tires, which use the high pressure of compressed air in the tire to carry the load of the vehicle and have good riding comfort. However, when a pneumatic tire is punctured, it is easy to leak air, which weakens the tire's load-bearing capacity and further causes increased or irregular wear on the tire tread. In addition, it is easy to blow out in hot weather, when the inflation pressure is too high, when driving continuously for a long time or when it is impacted, affecting the driving safety of the vehicle. Pneumatic tires do not have the risk of leakage and blowout of the above-mentioned pneumatic tires, and are maintenance-free.

[0003] The existing air-free tire structure generally adopts a solid rubber tire, which has the advantages of large load and good wear resistance. However, this type of tire is heavy, has poor elasticity, poor shock absorption ability, particularly poor comfort and is easy to crack due to impact. Utility Model Content

[0004] The utility model aims to provide an air-free tire, which can reduce tire weight, improve tire cushioning performance, and enhance riding comfort.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a tire without inflation, comprising:

[0007] The tire body is provided with a closed cavity structure, the cavity structure circumferentially passes through the interior of the tire body, the cavity structure is composed of a plurality of first cavities and a plurality of second cavities, the inner diameter of the first cavity is smaller than the inner diameter of the second cavity, and the first cavity is connected between two adjacent second cavities.

[0008] As a preferred technical solution of the above-mentioned airless tire, the first cavity is in a circular tube shape, and the second cavity is in a spherical or ellipsoidal shape.

[0009] As a preferred technical solution of the above-mentioned airless tire, in the radial direction along the carcass, the distance between the upper top surface of the first cavity and the outer ring surface of the carcass is T1, the distance between the lower bottom surface of the first cavity and the inner ring surface of the carcass is B1, and T1 and B1 satisfy: 0.9≤T1 / B1≤1.1.

[0010] As a preferred technical solution of the above-mentioned airless tire, the inner diameter of the first cavity is D1, and T1, B1 and D1 satisfy: 1.5≤(T1+B1) / D1≤3.4.

[0011] As a preferred technical solution for the above-mentioned airless tire, the second cavity is ellipsoidal in shape, and in the radial direction along the tire body, the minimum distance between the upper top surface of the second cavity and the outer ring surface of the tire body is T2, and the minimum distance between the lower bottom surface of the second cavity and the inner ring surface of the tire body is B2, and T2 and B2 satisfy: 0.9≤T2 / B2≤1.1.

[0012] As a preferred technical solution of the above-mentioned airless tire, the maximum inner diameter of the second cavity is D2, and T2, B2 and D2 satisfy: 0.65≤(T2+B2) / D2≤1.1.

[0013] As a preferred technical solution of the above-mentioned airless tire, along the circumferential direction of the tire body, the upper margin of the first cavity is L1, the upper margin of the second cavity is L2, and L1 and L2 satisfy: 3≤L2 / L1≤5.

[0014] As a preferred technical solution of the above-mentioned airless tire, the outer diameter of the tire body is C, and C, L1 and L2 satisfy: 3≤C / (L1+L2)≤6.

[0015] As a preferred technical solution of the above-mentioned airless tire, the airless tire further includes a sealing layer, which is arranged on the inner ring of the tire body and is used for being installed on the wheel hub.

[0016] As a preferred technical solution of the above-mentioned airless tire, the sealing layer is made of rubber material.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a non-inflatable tire, which includes: a carcass, the carcass is provided with a closed cavity structure, the cavity structure is circumferentially connected to the inside of the carcass, the cavity structure is composed of a plurality of first cavities and a plurality of second cavities, the inner diameter of the first cavity is smaller than the inner diameter of the second cavity, and the first cavity is connected between two adjacent second cavities. In this way, a plurality of first cavities and a plurality of second cavities are connected in series to form a through cavity structure inside the carcass, which not only reduces the weight of the carcass, but also reduces the radial stiffness of the carcass, thereby reducing the bumpy feeling, improving the cushioning performance of the carcass, and increasing the consumption of impact energy to achieve coordinated shock absorption, further enhancing the riding comfort, and at the same time, the circumferential connection of the carcass is only a group of inner cavities, that is, it corresponds to a group of molded middle molds during production and processing, which further simplifies the internal structure, simplifies the process flow, and the process is simple and controllable and suitable for continuous batch production, which can improve the yield rate and production efficiency of carcass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the air-free tire provided by the utility model;

[0020] Figure 2 for Figure 1 Sectional view along the AA direction;

[0021] Figure 3 for Figure 1 Cross-sectional view along the BB direction.

[0022] in:

[0023] 1. Carcass; 2. First cavity; 3. Second cavity; 4. Sealing layer. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0026] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0029] like Figures 1 to 3 As shown, this embodiment provides an inflation-free tire, which includes: a carcass 1, the carcass 1 is provided with a closed cavity structure, the cavity structure circumferentially passes through the interior of the carcass 1, the cavity structure is composed of a plurality of first cavities 2 and a plurality of second cavities 3, the inner diameter of the first cavity 2 is smaller than the inner diameter of the second cavity 3, and the first cavity 2 is connected between two adjacent second cavities 3. In this arrangement, a plurality of first cavities 2 and a plurality of second cavities 3 are connected in series to form a through cavity structure inside the tire body 1, which not only reduces the weight of the tire body 1, but also reduces the radial stiffness of the tire body 1, thereby reducing the bumpy feeling, improving the buffering performance of the tire body 1, and increasing the consumption of impact energy to achieve coordinated shock absorption, further enhancing the riding comfort. At the same time, the circumferential through-hole of the tire body 1 is only one group of inner cavities, that is, it corresponds to a group of molded middle molds during production and processing, which further simplifies the internal structure and the process flow. The process is simple and controllable and suitable for continuous batch production, which can improve the yield rate and production efficiency of the tire body 1. It should be noted that in this embodiment, the tire body 1 is made of rubber material by injection molding.

[0030] Optionally, the first cavity 2 is in the shape of a circular tube, and the second cavity 3 is in the shape of a sphere or an ellipsoid. With such a configuration, the spherical or ellipsoidal inner cavity can evenly and reasonably disperse the pressure on the carcass 1 due to the load, so that the force on the carcass 1 from the contact surface to the non-contact surface can be smoothly transitioned, further avoiding stress concentration, thereby avoiding the occurrence of phenomena such as cracking of the carcass 1, which is conducive to enhancing the reliability and durability of the carcass 1 and improving the service life of the carcass 1. Furthermore, the first cavity 2 and the second cavity 3 are evenly arranged along the circumference of the carcass 1.

[0031] Optionally, see Figure 3As shown, in the radial direction of the carcass 1, the distance between the upper top surface of the first cavity 2 and the outer ring surface of the carcass 1 is T1, the distance between the lower bottom surface of the first cavity 2 and the inner ring surface of the carcass 1 is B1, and T1 and B1 satisfy: 0.9≤T1 / B1≤1.1. For example, T1 / B1 can be 0.9, 0.94, 0.98, 1.02, 1.06 or 1.1.

[0032] Optionally, the inner diameter of the first cavity 2 is D1, and T1, B1 and D1 satisfy: 1.5≤(T1+B1) / D1≤3.4.

[0033] Optionally, the second cavity 3 is ellipsoidal in shape, and in the radial direction along the carcass 1, the minimum distance between the upper top surface of the second cavity 3 and the outer ring surface of the carcass 1 is T2, the minimum distance between the lower bottom surface of the second cavity 3 and the inner ring surface of the carcass 1 is B2, and T2 and B2 satisfy: 0.9≤T2 / B2≤1.1.

[0034] Optionally, the maximum inner diameter of the second cavity 3 is D2, and T2, B2 and D2 satisfy: 0.65≤(T2+B2) / D2≤1.1.

[0035] Such a configuration can ensure that the outer ring of the tire body 1 has a certain thickness to ensure the puncture resistance of the tire body 1, and the inner ring of the tire body 1 has a certain thickness to ensure the tightening effect on the wheel hub to avoid the risk of ring unseating, and can also provide sufficient support. Of course, the specific design proportional coefficient should be set based on a comprehensive assessment of the corresponding tire specifications and dimensions, load speed requirements, vehicle models and usage scenarios, and no further restrictions are made here.

[0036] Optionally, along the circumferential direction of the carcass 1 , the upper margin of the first cavity 2 is L1, the upper margin of the second cavity 3 is L2, and L1 and L2 satisfy: 3≤L2 / L1≤5.

[0037] Optionally, the outer diameter of the carcass 1 is C, and C, L1 and L2 satisfy: 3≤C / (L1+L2)≤6.

[0038] Such a configuration highlights the advantages of the overall structure, namely, a simplified structure. The first cylindrical cavity 2 is connected to the horizontally placed second cavity 3, so that the internal stress of the tire body 1 can be smoothly transitioned, which is conducive to buffering, thereby ensuring comfort and increasing the reliability and service life of the tire body 1. Of course, the specific design proportional coefficient should be set based on a comprehensive assessment of the corresponding tire specifications and dimensions, load speed requirements, vehicle models and usage scenarios, and no further restrictions are made here.

[0039] Optionally, the airless tire further includes a sealing layer 4, which is arranged on the inner ring of the tire body 1 and is used to be installed on the wheel hub. Furthermore, the sealing layer 4 is made of rubber material and is integrated with the inner ring of the tire body 1. With such an arrangement, when assembled on the wheel hub, the clamping force between the inner ring of the tire body 1 and the wheel hub can be improved, and the fastening can be enhanced. The sealing layer 4 made of rubber has tensile resistance, which can prevent the tire body 1 from being unhooked when a roll or oblique impact occurs, and further improve the safety and reliability of the tire body 1.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A pneumatic tire, characterized in that: include: A carcass (1), wherein the carcass (1) is provided with a closed cavity structure, wherein the cavity structure circumferentially penetrates the interior of the carcass (1), wherein the cavity structure is composed of a plurality of first cavities (2) and a plurality of second cavities (3), wherein the inner diameter of the first cavity (2) is smaller than the inner diameter of the second cavity (3), and the first cavity (2) is connected to two adjacent second cavities (3).

2. The airless tire according to claim 1, characterized in that: The first cavity (2) is in the shape of a circular tube, and the second cavity (3) is in the shape of a sphere or an ellipsoid.

3. The airless tire according to claim 2, characterized in that: In the radial direction of the carcass (1), the distance between the upper top surface of the first cavity (2) and the outer ring surface of the carcass (1) is T1, and the distance between the lower bottom surface of the first cavity (2) and the inner ring surface of the carcass (1) is B1, and T1 and B1 satisfy: 0.9≤T1 / B1≤1.

1.

4. The airless tire according to claim 3, characterized in that: The inner diameter of the first cavity (2) is D1, and T1, B1 and D1 satisfy: 1.5≤(T1+B1) / D1≤3.

4.

5. The airless tire according to claim 2, characterized in that: The second cavity (3) is ellipsoidal in shape. In the radial direction of the carcass (1), the minimum distance between the upper top surface of the second cavity (3) and the outer ring surface of the carcass (1) is T2, and the minimum distance between the lower bottom surface of the second cavity (3) and the inner ring surface of the carcass (1) is B2, and T2 and B2 satisfy: 0.9≤T2 / B2≤1.

1.

6. The airless tire according to claim 5, characterized in that: The maximum inner diameter of the second cavity (3) is D2, and T2, B2 and D2 satisfy: 0.65≤(T2+B2) / D2≤1.

1.

7. The airless tire according to claim 5, characterized in that: In the circumferential direction of the carcass (1), the upper margin of the first cavity (2) is L1, the upper margin of the second cavity (3) is L2, and L1 and L2 satisfy: 3≤L2 / L1≤5.

8. The airless tire according to claim 7, characterized in that: The outer diameter of the carcass (1) is C, and C, L1 and L2 satisfy: 3≤C / (L1+L2)≤6.

9. The airless tire according to any one of claims 1 to 8, characterized in that: The airless tire further comprises a sealing layer (4), wherein the sealing layer (4) is arranged on the inner ring of the tire body (1) and is used for being mounted on a wheel hub.

10. The airless tire according to claim 9, characterized in that: The sealing layer (4) is made of rubber material.

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