Tire belt structure and tire

Abstract

The present invention provides a tire belt layer structure and a tire, which relate to the technical field of tires and include a buffer layer, a working layer and an isolation film; the buffer layer and the working layer are stacked, a plurality of working layers are stacked and arranged on the outside of the buffer layer, and the isolation film is arranged between the buffer layer and the working layer; by arranging the isolation film between the buffer layer and the working layer, the adhesion between the buffer layer and the working layer can be improved, the overall structural stability can be enhanced, the handling can be improved, and the crown force distribution can be optimized, and the shear strain between the buffer layer and the working layer can be reduced, so as to solve the technical problems in the prior art that the adhesion between the various belt layers of the belt layer structure is low, the overall structural stability is poor, and it is easy to be damaged by shear strain, thereby improving the stability and handling of the belt layer structure.

Description

Technical Field

[0001] The technology of the present invention relates to the field of tires, and in particular to a tire belt structure and a tire. Background Art

[0002] Lightweight tires with energy saving, environmental protection, safety and high efficiency as their main features are a development direction of the current tire industry. Among the many types of tires, radial tires and belted bias tires are widely used in various fields.

[0003] At present, under the tread base of radial tires and belted bias tires, there is a material layer that tightens the carcass along the circumferential direction of the tread centerline, namely the belt layer. The belt layer has the functions of relieving impact and tightening the carcass. Especially in radial tires, the belt layer is also the main force-bearing component. Conventional belt layer structures all have multiple bonded belt layers.

[0004] However, the existing belt layer structure has low adhesion between the belt layers, poor overall structural stability, and is easily damaged by shear strain. Summary of the invention

[0005] The purpose of the present invention is to provide a belt layer structure and a tire to alleviate the technical problems of low adhesion between belt layers of the belt layer structure in the prior art, poor overall structural stability, and easy damage due to shear strain.

[0006] In a first aspect, the present invention provides a tire belt structure, comprising a buffer layer, a working layer and an isolation film;

[0007] The buffer layer and the working layer are stacked, a plurality of the working layers are stacked and arranged outside the buffer layer, and the isolation film is arranged between the buffer layer and the working layer;

[0008] The isolation film includes a regular area and transition areas arranged at both ends of the regular area;

[0009] The transition zone is in a triangular or fan-shaped shape, so that the cross section of the isolation film is in an inverted trapezoidal shape.

[0010] Furthermore, the ratio of the thickness of the isolation film to the center thickness of the tread is in a range of 0.02 to 0.04.

[0011] Furthermore, the width of the isolation film is smaller than the width of the working layer, and larger than the width of the overlapping portion of the buffer layer and the working layer.

[0012] Furthermore, the tire belt structure also includes a reinforcement layer, and the reinforcement layer is wound around the outer side of the working layer.

[0013] Furthermore, the isolation film is bonded to the working layer and the buffer layer respectively.

[0014] In a second aspect, the present invention further provides a tire comprising the tire belt structure described above.

[0015] Furthermore, the tire is also provided with a cushion rubber, and the hardness of the isolation rubber sheet is greater than that of the cushion rubber.

[0016] Compared with the prior art, the present invention provides a tire belt structure, including a buffer layer, a working layer and an isolation film; the buffer layer and the working layer are stacked, a plurality of working layers are stacked and arranged on the outside of the buffer layer, and the isolation film is arranged between the buffer layer and the working layer; by arranging the isolation film between the buffer layer and the working layer, the adhesion between the buffer layer and the working layer can be improved, the overall structural stability can be enhanced, the handling can be improved, and at the same time, the crown force distribution can be optimized, and the shear strain between the buffer layer and the working layer can be reduced, so as to solve the technical problems in the prior art that the adhesion between the belt layers of the belt structure is low, the overall structural stability is poor, and it is easy to be damaged by shear strain, thereby improving the stability and handling of the belt structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the overall structure of a tire belt structure provided by an embodiment of the present invention;

[0019] Figure 2 This is a schematic structural diagram of an isolation film in a tire belt structure provided by an embodiment of the present invention.

[0020] Reference numerals:

[0021] 10. Tire belt structure; 100. Buffer layer; 200. Working layer; 300. Isolation film; 310. Transition zone; 320. Regular zone; 400. Reinforcement layer; 20. Cushion rubber. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. They 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 limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a tire belt structure 10, including a buffer layer 100, a working layer 200 and an isolation film 300; the buffer layer 100 and the working layer 200 are stacked, and several working layers 200 are stacked on the outside of the buffer layer 100, and the isolation film 300 is arranged between the buffer layer 100 and the working layer 200.

[0030] That is, the tire belt structure 10 provided in the embodiment of the present invention can improve the adhesion between the buffer layer 100 and the working layer 200, enhance the overall structural stability, improve the handling, and optimize the crown force distribution, reduce the shear strain between the buffer layer 100 and the working layer 200, so as to solve the technical problems of low adhesion between the belt layers of the belt structure in the prior art, poor overall structural stability, and susceptibility to damage due to shear strain, thereby improving the stability and handling of the belt structure.

[0031] Specifically, the buffer layer 100 and the working layer 200 are both made of high-strength and high-hardness rubber, and high-strength, high-modulus and small-angle arranged cords are arranged therein as their reinforcing materials. The isolation film 300 is made of rubber material, so that it has adhesion with the materials of the buffer layer 100 and the working layer 200, and improves the adhesion between the buffer layer 100 and the working layer 200. The isolation film 300 is arranged between the buffer layer 100 and the working layer 200 to separate the buffer layer 100 and the working layer 200, thereby reducing the strain energy density of the buffer layer 100 and the working layer 200, reducing their deformation degree, so that both have good elastic deformation ability, and avoid damage to them.

[0032] Preferably, the isolation film 300 is bonded to the working layer 200 and the buffer layer 100 respectively.

[0033] Specifically, adhesive is provided between the insulating film 300 and the working layer 200 so that the insulating film 300 and the working layer 200 can be bonded. Adhesive is provided between the insulating film 300 and the buffer layer 100 so that the insulating film 300 and the buffer layer 100 can be bonded. Thus, the overall tightness of the tire belt structure 10 is improved by bonding the insulating film 300 to the buffer layer 100 and the working layer 200.

[0034] Furthermore, the ratio of the thickness of the isolation film 300 to the center thickness of the tread is in the range of 0.02 to 0.04.

[0035] Specifically, in this embodiment, the thickness of the isolation film 300 is set to 0.02 times the thickness of the crown center. If the thickness of the isolation film 300 is too large, the cost will be increased and the film will generate heat. Moreover, the large shear strain amplitude will cause fatigue cracks in this area during long-term use, affecting durability. If the thickness of the isolation film 300 is too small, it will be difficult to achieve the effect of reducing the strain energy density of the buffer layer 100 and the working layer 200 and reducing their deformation degree. In this embodiment, the maximum thickness of the isolation film 300 is set to 1 mm.

[0036] Preferably, the width of the isolation film 300 is smaller than the width of the working layer 200 , and larger than the width of the overlapping portion of the buffer layer 100 and the working layer 200 .

[0037] Specifically, in this embodiment, the width of the isolation film 300 is set to 40 mm, which is smaller than the width of the working layer 200 band 110 mm, and larger than the width of the overlapping portion of the buffer layer 100 and the working layer 200 330 mm. Thus, the isolation film 300 is set between the buffer layer 100 and the working layer 200 to reduce the strain energy density of the buffer layer 100 and the working layer 200.

[0038] Furthermore, the isolation film 300 includes a regular area 320 and transition areas 310 disposed at both ends of the regular area 320 .

[0039] Specifically, the cross section of the regular area 320 is rectangular, and serves as the main body of the isolation film 300 to separate the buffer layer 100 from the working layer 200. The shape of the transition area 310 is set by the shape of the working layer 200, and its shape setting should be calculated and set to adapt to the angle change rate of the buffer layer 100 and the working layer 200 to reduce the shear strain amplitude.

[0040] Preferably, the transition area 310 is in a triangular or fan-shaped shape, so that the cross section of the isolation film 300 is in an inverted trapezoidal shape.

[0041] Specifically, in this embodiment, the cross section of the transition zone 310 is triangular, so that the cross section of the isolation film 300 is inverted trapezoidal. Therefore, when the tire is inflated, the angle change of the buffer layer 100 and the working layer 200 is reduced, the angle change rate of the buffer layer 100 and the working layer 200 is reduced, and the shear strain amplitude of the two is further reduced, thereby improving the durability of the tire belt structure 10.

[0042] Furthermore, the tire belt structure 10 further includes a reinforcing layer 400 , which is wound around the outer side of the working layer 200 .

[0043] Specifically, the reinforcing layer 400 can be provided as two layers of 0° wound reinforcing layers 400, or can be provided as one layer of reinforcing layer 400, which is wound around the outside of the working layer 200. By providing the reinforcing layer 400 on the outside of the working layer 200, the energy stored in the sandwiched part can be reduced, the deformation degree of the material can be reduced, and the probability of plastic deformation or damage can be reduced.

[0044] The present invention also provides a tire, including the above-mentioned tire belt layer structure, which naturally also includes all the technical effects of the above-mentioned tire belt layer structure, which will not be repeated here.

[0045] Furthermore, the tire is also provided with a cushion rubber 20 , and the hardness of the isolation rubber sheet 300 is greater than that of the cushion rubber 20 .

[0046] Specifically, the cushion rubber 20 is arranged in the area surrounded by the carcass, the belt layer structure 10 and the tread base rubber, and plays a role of buffering and supporting. The hardness is relatively low, so as to better absorb and disperse the impact and vibration from the road surface and improve the riding comfort. The hardness of the isolation film 300 is greater than that of the cushion rubber 20. The isolation film 300 with higher hardness can more effectively transfer the stress from the belt layer structure 10 to the cushion rubber 20, so as to better disperse the stress, reduce local stress concentration, and reduce the delamination or peeling of the belt layer when subjected to external force. The hardness of the isolation film 300 is lower than that of the belt layer, so it can better bond the belt layer material with higher hardness and the cushion rubber 20 material with lower hardness to form a stable structure.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tire belt structure, characterized in that: It comprises a buffer layer (100), a working layer (200) and an isolation film (300); The buffer layer (100) and the working layer (200) are stacked, a plurality of the working layers (200) are stacked and arranged outside the buffer layer (100), and the isolation film (300) is arranged between the buffer layer (100) and the working layer (200); The isolation film (300) comprises a regular area (320) and transition areas (310) arranged at both ends of the regular area (320); The transition zone (310) is in a triangular or fan-shaped shape, so that the cross section of the isolation film (300) is in an inverted trapezoidal shape; The ratio of the thickness of the isolation film (300) to the center thickness of the tread is in the range of 0.02 to 0.04; The width of the isolation film (300) is smaller than the width of the working layer (200), and larger than the width of the overlapping portion of the buffer layer (100) and the working layer (200).

2. The tire belt structure according to claim 1, characterized in that: The tire belt structure further comprises a reinforcing layer (400), wherein the reinforcing layer (400) is wound around the outside of the working layer (200).

3. The tire belt structure according to claim 1, characterized in that: The isolation film (300) is bonded to the working layer (200) and the buffer layer (100) respectively.

4. A tire, characterized in that: The tire belt structure (10) comprises the tire belt structure (10) according to any one of claims 1 to 3.

5. The tire according to claim 4, characterized in that The tire is also provided with a cushion rubber (20), and the hardness of the isolation rubber sheet (300) is greater than that of the cushion rubber (20).

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