Tire with self-repairing function

Abstract

The utility model discloses a tire with a self-repairing function. The tire comprises a tire body, a first rubber layer and a butadiene styrene rubber layer, the tire body is provided with a tire cavity, the first rubber layer and the styrene-butadiene rubber layer are arranged in the tire cavity, and the tire body, the first rubber layer and the styrene-butadiene rubber layer are sequentially stacked in the radial direction of the tire body from outside to inside. The butadiene styrene rubber layer is used as the repairing layer and is fixed on the inner wall of the tire body through the first rubber layer, so that when the tire body is punctured, the phenomenon that gas in the tire cavity escapes to the external environment along the puncture opening to cause gas leakage can be avoided. In addition, the tire body and the styrene-butadiene rubber layer are fixed together through the first rubber layer, so that the connection stability of the styrene-butadiene rubber layer is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a tire with a self-repairing function. Background Art

[0002] In order to reduce the driving noise of vehicles, silent sponge tires have emerged on the market. The silent sponge tires have the silent sponge adhered to the inside of the tire, and its porous characteristics have the function of absorbing the resonance between the tire and the road surface. The silent tires can significantly reduce the resonance noise generated during the operation of the vehicle, reduce the tire noise, and can significantly improve the riding comfort. It is particularly important for noise reduction of new energy vehicles.

[0003] The patent document with the patent publication number 202320992256.X discloses a low-cavity noise tire, which uses a polyurethane material foaming element to make a silent element and is applicable to tubeless tires.

[0004] However, since tubeless tires only have an outer tire and no inner tire, after the existing outer tire is punctured, the self-repairing function of the outer tire is poor and needs to be improved urgently. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a tire with a self-repairing function, and its self-repairing function is better.

[0006] The purpose of the utility model is realized by adopting the following technical scheme:

[0007] A tire with a self-repairing function includes: a tire body, a first rubber layer, and a styrene-butadiene rubber layer; the tire body has a tire cavity, the first rubber layer and the styrene-butadiene rubber layer are both arranged in the tire cavity, and the tire body, the first rubber layer, and the styrene-butadiene rubber layer are sequentially stacked from the outside to the inside along the radial direction of the tire body.

[0008] Further, the tire with a self-repairing function further includes a second rubber layer and a sound-absorbing layer, the second rubber layer and the sound-absorbing layer are both arranged in the tire cavity, and the tire body, the first rubber layer, the styrene-butadiene rubber layer, the second rubber layer, and the sound-absorbing layer are sequentially stacked from the outside to the inside along the radial direction of the tire body.

[0009] Further, the sound-absorbing layer is a polyurethane material layer or a sound-absorbing sponge layer.

[0010] Further, the tire body has a first main body part and two first side parts, the first main body part is used for contacting the ground, and the two first side parts are respectively connected to the axially opposite sides of the first main body part; the inner wall of the first main body part and the inner walls of the two first side parts enclose the tire cavity;

[0011] The first adhesive layer has a second main body and two second side parts, the second main body abuts against the inner wall of the first main body, and the two second side parts respectively abut against the inner wall of one of the first side parts;

[0012] The styrene-butadiene rubber layer has a third main body and two third side parts. The third main body abuts against the inner wall of the second main body, and the two third side parts respectively abut against the inner wall of one of the second side parts.

[0013] Furthermore, the second adhesive layer has a fourth main body portion and two fourth side portions, the fourth main body portion abuts against an inner wall of the third main body portion, and the two fourth side portions respectively abut against an inner wall of one of the third side portions.

[0014] Furthermore, the sound absorbing layer has a fifth main body portion and two fifth side portions, the fifth main body portion abuts against an inner wall of the fourth main body portion, and the two fifth side portions respectively abut against an inner wall of one of the fourth side portions.

[0015] Furthermore, the tire with self-repairing function also includes an elastic expansion member, the elastic expansion member has a sixth main body portion and two sixth side portions, the sixth main body portion is penetrated through the third main body portion, and the sixth side portion is penetrated through the third side portion.

[0016] Furthermore, the elastic expansion members are provided in plurality, and the plurality of elastic expansion members are distributed at intervals around the circumference of the tire body.

[0017] Furthermore, the elastic expansion member is a metal sheet element.

[0018] Furthermore, the first adhesive layer and the second adhesive layer are layers of the same material.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By using the styrene-butadiene rubber layer as a repair layer and fixing it to the inner wall of the tire body through the first rubber layer, it is possible to prevent the gas in the tire cavity from escaping to the external environment along the puncture hole and causing deflation when the tire body is punctured.

[0021] 2. In addition, the tire body and the styrene-butadiene rubber layer are fixed together by the first rubber layer, thereby ensuring the connection stability of the styrene-butadiene rubber layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a cross-sectional view of a tire with self-repairing function according to the first embodiment of the utility model;

[0023] Figure 2This is a cross-sectional view of a tire with self-repairing function according to the second embodiment of the utility model.

[0024] In the figure: 1. tire body; 11. tire cavity; 12. first main body; 13. first side; 2. first rubber layer; 21. second main body; 22. second side; 3. styrene-butadiene rubber layer; 31. third main body; 32. third side; 4. second rubber layer; 41. fourth main body; 42. fourth side; 5. sound-absorbing layer; 51. fifth main body; 52. fifth side; 6. elastic expansion member; 61. sixth main body; 62. sixth side. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations 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.

[0027] In the description of the present utility model, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] First embodiment:

[0030] See also Figure 1, the first embodiment of the present utility model provides a tire with a self-repairing function, including: a tire body 1, a first adhesive layer 2 (preferably a hot-melt adhesive layer), a styrene-butadiene rubber layer 3, a second adhesive layer 4 (preferably a hot-melt adhesive layer), and a sound-absorbing layer 5. The tire body 1 has a tire cavity 11, and the first adhesive layer 2, the styrene-butadiene rubber layer 3, the second adhesive layer 4, and the sound-absorbing layer 5 are all arranged inside the tire cavity 11. The tire body 1, the first adhesive layer 2, the styrene-butadiene rubber layer 3, the second adhesive layer 4, and the sound-absorbing layer 5 are sequentially stacked from the outside to the inside along the radial direction of the tire body 1, that is, they are stacked together in sequence.

[0031] It should be noted that styrene-butadiene rubber (SBR), also known as polystyrene-butadiene copolymer, has a repair function. When it is used inside the tire body 1, when the tire body 1 is punctured by an iron nail and both the tire body 1 and the styrene-butadiene rubber layer 3 are punctured, the styrene-butadiene rubber layer 3 has a healing effect, that is, the styrene-butadiene rubber layer 3 can wrap around the periphery of the iron nail to prevent the gas inside the tire cavity 11 from escaping to the external environment along the puncture opening and causing a flat tire phenomenon. Among them, the styrene-butadiene rubber layer 3 has better healing performance and is more suitable as a repair layer, so that a tire with a self-repairing function has a self-repairing function.

[0032] In this way, by using the styrene-butadiene rubber layer 3 as the repair layer and fixing it to the inner wall of the tire body 1 through the first adhesive layer 2, it is possible to prevent the gas inside the tire cavity 11 from escaping to the external environment along the puncture opening and causing a flat tire phenomenon when the tire body 1 is punctured. In addition, the first adhesive layer 2 fixes the tire body 1 and the styrene-butadiene rubber layer 3 together, ensuring the connection stability of the styrene-butadiene rubber layer 3; and, the second adhesive layer 4 fixes the styrene-butadiene rubber layer 3 and the sound-absorbing layer 5 together, thereby improving the connection stability of the sound-absorbing layer 5 and ensuring that the sound-absorbing layer 5 closely adheres to the tire body 1 to improve the noise reduction effect, making the tire have a noise reduction function.

[0033] In this embodiment, preferably, the sound-absorbing layer 5 is a polyurethane material layer or a sound-absorbing sponge layer.

[0034] In this embodiment, preferably, the tire body 1 has a first main body part 12 and two first side parts 13. The first main body part 12 is used to contact the ground, and the two first side parts 13 are respectively connected to the axially opposite sides of the first main body part 12; the inner wall of the first main body part 12 and the inner walls of the two first side parts 13 enclose the tire cavity 11.

[0035] The first adhesive layer 2 has a second main body part 21 and two second side parts 22. The second main body part 21 abuts against the inner wall of the first main body part 12, and the two second side parts 22 respectively abut against the inner wall of one of the first side parts 13;

[0036] The styrene-butadiene rubber layer 3 has a third main body 31 and two third side parts 32. The third main body 31 abuts against the inner wall of the second main body 21, and the two third side parts 32 respectively abut against the inner wall of one of the second side parts 22. In this way, the styrene-butadiene rubber layer 3 can cover the inner wall of the tire body 1 as much as possible, so that the air leakage function is more comprehensive.

[0037] In this embodiment, preferably, the second adhesive layer 4 has a fourth main body portion 41 and two fourth side portions 42, the fourth main body portion 41 abuts against the inner wall of the third main body portion 31, and the two fourth side portions 42 respectively abut against the inner wall of one of the third side portions 32, and by connecting the second adhesive layer 4 to the styrene-butadiene rubber layer 3, the connection stability of the styrene-butadiene rubber layer 3 to the sound-absorbing layer 5 can be improved.

[0038] In this embodiment, preferably, the sound absorbing layer 5 has a fifth main body portion 51 and two fifth side portions 52, the fifth main body portion 51 abuts against the inner wall of the fourth main body portion 41, and the two fifth side portions 52 respectively abut against the inner wall of one of the fourth side portions 42. In this way, the sound absorbing layer 5 not only has the fifth main body portion 51, but also has two fifth side portions 52, thereby expanding the quiet range.

[0039] Second embodiment:

[0040] See also Figure 2 The utility model also discloses a second embodiment, which includes the first embodiment, and is different from the first embodiment in that: a tire with a self-repairing function further includes an elastic expansion member 6, the elastic expansion member 6 has a sixth main body 61 and two sixth side portions 62, the sixth main body 61 is arranged through the third main body 31, and the sixth side portion 62 is arranged through the third side portion 32. In this way, the sound absorbing layer 5 is expanded by the elastic expansion member 6 to maintain its expanded state, avoiding the connection stability of the styrene-butadiene rubber layer 3 and the sound absorbing layer 5 being affected due to insufficient bonding force between the first adhesive layer 2 and the second adhesive layer 4.

[0041] In this embodiment, preferably, a plurality of elastic expansion members 6 are provided, and the plurality of elastic expansion members 6 are distributed at intervals around the circumference of the tire body 1 to reduce the difficulty of installing the elastic expansion members 6. In other embodiments, the elastic expansion member 6 may be an annular structure.

[0042] In this embodiment, preferably, the elastic expansion member 6 is a metal sheet element or a rubber sheet, wherein the elasticity of the metal sheet element is more durable, and is easier to manufacture and has a lower total cost.

[0043] In this embodiment, preferably, the first adhesive layer 2 and the second adhesive layer 4 are made of the same material to reduce the difficulty of the manufacturing process. In other embodiments, the first adhesive layer 2 and the second adhesive layer 4 are made of different materials.

[0044] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0046] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A tire with self-repairing function, characterized in that: include: A tire body, a first rubber layer and a styrene-butadiene rubber layer; the tire body has a tire cavity, the first rubber layer and the styrene-butadiene rubber layer are both arranged in the tire cavity, and the tire body, the first rubber layer and the styrene-butadiene rubber layer are stacked in sequence from the outside to the inside along the radial direction of the tire body.

2. A tire with self-repairing function as claimed in claim 1, characterized in that: The tire with self-repairing function also includes a second rubber layer and a sound-absorbing layer, wherein the second rubber layer and the sound-absorbing layer are both arranged in the tire cavity, and the tire body, the first rubber layer, the styrene-butadiene rubber layer, the second rubber layer and the sound-absorbing layer are stacked in sequence from the outside to the inside along the radial direction of the tire body.

3. A tire with self-repairing function as claimed in claim 2, characterized in that: The sound absorbing layer is a polyurethane material layer or a sound absorbing sponge layer.

4. A tire with self-repairing function as claimed in claim 2, characterized in that: The tire body comprises a first main body portion and two first side portions, wherein the first main body portion is used to contact the ground, and the two first side portions are respectively connected to two axially opposite sides of the first main body portion; the inner wall of the first main body portion and the inner walls of the two first side portions enclose the tire cavity; The first adhesive layer has a second main body and two second side parts, the second main body abuts against the inner wall of the first main body, and the two second side parts respectively abut against the inner wall of one of the first side parts; The styrene-butadiene rubber layer has a third main body and two third side parts. The third main body abuts against the inner wall of the second main body, and the two third side parts respectively abut against the inner wall of one of the second side parts.

5. A tire with self-repairing function as claimed in claim 4, characterized in that: The second adhesive layer has a fourth main body and two fourth side parts. The fourth main body is in contact with the inner wall of the third main body, and the two fourth side parts are respectively in contact with the inner wall of one of the third side parts.

6. A tire with self-repairing function as claimed in claim 5, characterized in that: The sound absorbing layer has a fifth main body portion and two fifth side portions. The fifth main body portion abuts against an inner wall of the fourth main body portion, and the two fifth side portions respectively abut against an inner wall of one of the fourth side portions.

7. A tire with self-repairing function as claimed in claim 4, characterized in that: The tire with self-repairing function also includes an elastic expansion member, which has a sixth main body and two sixth side parts. The sixth main body is penetrated by the third main body, and the sixth side part is penetrated by the third side part.

8. A tire with self-repairing function as claimed in claim 7, characterized in that: There are a plurality of elastic expansion members, and the plurality of elastic expansion members are distributed at intervals around the circumference of the tire body.

9. A tire with self-repairing function as claimed in claim 8, characterized in that: The elastic expansion member is a metal sheet element.

10. The tire with self-repairing function as claimed in claim 2, characterized in that: The first adhesive layer and the second adhesive layer are made of the same material.

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