Silent tire

Abstract

The utility model discloses a mute tire. The mute tire comprises a tire body and a sound absorption element, the tire body is provided with a first main body part and two first side parts, the first main body part is used for making contact with the ground, and the two first side parts are connected to the two axial opposite sides of the first main body part respectively; a tire cavity is defined by the inner wall of the first main body part and the inner walls of the two first side parts; the sound absorption element is provided with a second main body part and two second side parts, the second main body part abuts against the inner wall of the first main body part, and the two side parts abut against the inner wall of one first side part. The second main body part abuts against the inner wall of the first main body part, and the two side parts abut against the inner wall of one first side part, so that the side parts of the inner wall of the tire body also abut against the sound absorption element, and the mute effect of the tire body is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a silent tire. 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 silent sponges adhered to the inside of the tires. Their porous characteristics have the function of absorbing the resonance between the tires and the road surface. The silent tires can significantly reduce the resonance noise generated during vehicle operation, reduce tire noise, and can significantly improve the ride 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 foam element to make a silent element and bonds the silent element to the surface of the inner wall of the tire body. Although it improves the noise reduction effect of the tire, the noise reduction effect needs to be improved. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a silent tire, which further improves the noise reduction effect.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A silent tire, comprising:

[0007] A tire body, having 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 a tire cavity;

[0008] A sound-absorbing element, having a second main body part and two second side parts, the second main body part abuts against the inner wall of the first main body part, and the two second side parts respectively abut against the inner wall of one of the first side parts.

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

[0010] Further, a first hot melt adhesive layer is connected to the side of the second main body part facing the first main body part, and the second main body part is adhered to the first main body part through the first hot melt adhesive layer.

[0011] Further, there are multiple first hot melt adhesive layers, and the multiple first hot melt adhesive layers are distributed at intervals along the axial direction of the tire body. The first hot melt adhesive layer extends around the circumferential direction of the tire body and forms an annular structure.

[0012] Furthermore, a second hot-melt adhesive layer is connected to a side of the second side portion facing the first side portion, and is adhered to the second main body portion through the second hot-melt adhesive layer.

[0013] Furthermore, the second hot melt adhesive layer extends around the circumference of the tire body and forms an annular structure.

[0014] Furthermore, the side of the second side portion closer to the second main body portion is the inner side, the side of the second side portion away from the second main body portion is the edge side, the portion of the second side portion located between the inner side and the edge side is the free portion, the inner side is fixedly connected to the second main body portion, and the edge side and the first side portion are bonded together by the second hot melt adhesive layer to form a deformation compensation space between the free portion and the inner wall of the first side portion.

[0015] Furthermore, the silent tire also includes an elastic expansion member, the elastic expansion member has a third main body portion and two third side portions, the third main body portion is penetrated through the second main body portion, and the third side portion is penetrated through the second 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] Compared with the prior art, the beneficial effects of the present invention are:

[0019] Since the second main body abuts against the inner wall of the first main body, the two side portions abut against the inner wall of one of the first side portions respectively, the side portions of the inner wall of the tire body also abut against the sound absorbing element, thereby enhancing the quiet effect of the tire body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A cross-sectional view of a silent tire according to the first embodiment of the utility model;

[0021] Figure 2 for Figure 1 A cross-sectional view of a silent tire according to a second embodiment is shown.

[0022] In the figure: 1. tire body; 11. first main body; 12. first side; 13. tire cavity; 2. sound absorbing element; 21. second main body; 22. second side; 221. inner side; 222. edge side; 223. free part; 3. first hot melt adhesive layer; 4. second hot melt adhesive layer; 5. deformation compensation space; 6. elastic expansion member; 61. third main body; 62. third side. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.

[0025] In the description of the present utility model, if there are words such as "several" for description, its meaning is one or more, and the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number.

[0026] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0027] First Embodiment:

[0028] See Figure 1 , a noise-reducing tire of this embodiment includes: a tire body 1 and a sound-absorbing element 2.

[0029] The tire body 1 has a first main body portion 11 and two first side portions 12. The first main body portion 11 is used to contact the ground, and the two first side portions 12 are respectively connected to the axially opposite sides of the first main body portion 11; the inner wall of the first main body portion 11 and the inner walls of the two first side portions 12 enclose a tire cavity 13, and the tire cavity 13 is used to connect to a wheel rim.

[0030] The sound-absorbing element 2 has a second main body portion 21 and two second side portions 22. The second main body portion 21 abuts against the inner wall of the first main body portion 11, and the two second side portions 22 respectively abut against the inner wall of one of the first side portions 12.

[0031] It can be understood that this silent tire is particularly suitable for tubeless tires. It should be noted that according to the structure of tubeless tires, the tire body 1 is equivalent to the outer tire. The tire body 1 is made of rubber material. The outer tire can be directly connected to the rim, and the inner tube is cancelled. After the outer tire is filled with gas, the two first side portions 12 are respectively pressed against the hump portions of the rim (the hump portions are annular protrusions) to complete the sealing. Additionally, it should be noted that a valve will be installed on the rim of tubeless tires, and the tire cavity 13 can be inflated through the valve.

[0032] Based on the second main body portion 21 abutting against the inner wall of the first main body portion 11, and the two first side portions 12 respectively abutting against the inner wall of one of the first side portions 12, the side portion of the inner wall of the tire body 1 also abuts against the sound-absorbing element 2, thereby enhancing the sound insulation effect of the tire body 1.

[0033] In this embodiment, preferably, the sound-absorbing element 2 is a polyurethane material element or a sound-absorbing sponge element.

[0034] In this embodiment, in order to improve the connection stability between the second main body portion 21 and the tire body 1, preferably, a first hot melt adhesive layer 3 is connected to the side of the second main body portion 21 facing the first main body portion 11, and is adhered to the first main body portion 11 through the first hot melt adhesive layer 3.

[0035] In this embodiment, preferably, there are multiple first hot melt adhesive layers 3. The multiple first hot melt adhesive layers 3 are spaced along the axial direction of the tire body 1. The first hot melt adhesive layer 3 extends around the circumferential direction of the tire body 1 and forms an annular structure, that is, each first hot melt adhesive layer 3 is in an annular structure, so that the connection between the first hot melt adhesive layer 3 and the first main body portion 11 is more perfect, and the connection between the first hot melt adhesive layer 3 and the second main body portion 21 is more perfect. In this way, the fixation between the tire body 1 and the sound-absorbing element 2 is completed by arranging multiple first hot melt adhesive layers 3 at intervals, so that there are gaps between adjacent two first hot melt adhesive layers 3. Thus, when the tire body 1 deforms, the first hot melt adhesive layer 3 can deform correspondingly to ensure the connection stability. In other embodiments, the first hot melt adhesive layer 3 can be replaced by conventional glue.

[0036] In this embodiment, in order to improve the connection tightness between the second side portion 22 and the first side portion 12, thereby ensuring the sound insulation effect, preferably, a second hot melt adhesive layer 4 is connected to the side of the second side portion 22 facing the first side portion 12, and is adhered to the second main body portion 21 through the second hot melt adhesive layer 4.

[0037] In this embodiment, preferably, the second hot melt adhesive layer 4 extends around the circumferential direction of the tire body 1 and forms an annular structure, so that the connection between the second hot melt adhesive layer 4 and the first side portion 12 is more perfect, and the connection between the second hot melt adhesive layer 4 and the second side portion 22 is more perfect.

[0038] In this embodiment, preferably, the side of the second side portion 22 close to the second main body portion 21 is the inner side 221, the side of the second side portion 22 away from the second main body portion 21 is the edge side 222, the portion of the second side portion 22 located between the inner side 221 and the edge side 222 is the free portion 223, the inner side 221 is fixedly connected to the second main body portion 21, and the edge side 222 is bonded to the first side portion 12 through the second hot melt adhesive layer 4 to form a deformation compensation space 5 between the free portion 223 and the inner wall of the first side portion 12. It can be understood that there is a bending portion between the first main body portion 11 and the first side portion 12 of the tire body 1, and the bending portion is often in contact with the external environment, thereby being compressed inwardly. If the deformation compensation space 5 is not provided, if the free portion 223 is bonded to the inner wall of the bending portion, it is easy to cause the inner wall of the bending portion and the free portion 223 to separate during frequent deformation, thereby causing the second side portion 22 to separate from the first side portion 12, resulting in a decrease in the noise reduction function of the sound absorbing element 2. Therefore, by providing the deformation compensation space 5, a certain distance is provided between the free portion 223 and the bending portion, so that the deformation of the bending portion will not cause the free portion 223 to pull the inner side 221 and the edge side 222, thereby not reducing the bonding stability of the second hot melt adhesive layer 4.

[0039] Second embodiment:

[0040] See also Figure 2 , the second embodiment includes the first embodiment, and the difference between the second embodiment and the first embodiment is that: in this embodiment, preferably, a silent tire further includes an elastic expansion member 6, the elastic expansion member 6 has a third main body 61 and two third side portions 62, the third main body 61 is arranged in the second main body 21, and the third side portion 62 is arranged in the second side portion 22. In this way, the sound absorbing element 2 is expanded by the elastic expansion member 6, so that the first hot melt adhesive layer 3 and the second hot melt adhesive layer 4 can be replaced. Of course, in other embodiments, the first hot melt adhesive layer 3, the second hot melt adhesive layer 4 and the elastic expansion member 6 can exist at the same time, that is, they are arranged together in the tire cavity 13. Obviously, the elastic expansion member 6 enables the sound absorbing element 2 to maintain its posture, thereby more effectively ensuring the noise reduction effect of the sound absorbing element 2.

[0041] In this embodiment, in order to facilitate the installation of the elastic expansion member 6, 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. In other embodiments, the elastic expansion member 6 is an annular structure, that is, it conforms to the tire body 1, but such a configuration makes it difficult to install the elastic expansion member 6 into the tire cavity 13, resulting in greater difficulty in installation.

[0042] In this embodiment, preferably, the elastic expansion member 6 is a metal sheet element. The metal sheet element has good ductility, and has good elasticity when bent to a certain extent, and can maintain its shape. In other embodiments, the elastic expansion member 6 is made of rubber material.

[0043] 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.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0045] 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 by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A silent tire, characterized in that: include: A tire body, comprising a first main body and two first side parts, wherein the first main body is used to contact the ground, and the two first side parts are respectively connected to two opposite axial sides of the first main body; an inner wall of the first main body and inner walls of the two first side parts enclose a tire cavity; The sound absorbing element comprises a second main body and two second side parts, wherein 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.

2. A silent tire as claimed in claim 1, characterized in that: The sound absorbing element is a polyurethane material element or a sound absorbing sponge element.

3. The silent tire according to claim 1, characterized in that: A first hot melt adhesive layer is connected to a side of the second main body facing the first main body, and the second main body is adhered to the first main body through the first hot melt adhesive layer.

4. A silent tire as claimed in claim 3, characterized in that: The first hot melt adhesive layer is provided with a plurality of strips, and the plurality of strips are distributed at intervals along the axial direction of the tire body. The first hot melt adhesive layer extends circumferentially around the tire body to form an annular structure.

5. The silent tire according to claim 3, characterized in that: A second hot-melt adhesive layer is connected to a side of the second side portion facing the first side portion, and the second side portion is adhered to the second main body portion through the second hot-melt adhesive layer.

6. A silent tire as claimed in claim 5, characterized in that: The second hot melt adhesive layer extends around the circumference of the tire body and forms an annular structure.

7. The silent tire according to claim 5, characterized in that: The side of the second side portion close to the second main body portion is the inner side, the side of the second side portion away from the second main body portion is the edge side, the part of the second side portion located between the inner side and the edge side is the free portion, the inner side is fixedly connected to the second main body portion, and the edge side and the first side portion are bonded together by the second hot melt adhesive layer to form a deformation compensation space between the free portion and the inner wall of the first side portion.

8. The silent tire according to claim 1, characterized in that: The silent tire further comprises an elastic expansion member, wherein the elastic expansion member comprises a third main body portion and two third side portions, wherein the third main body portion is penetrated through the second main body portion, and the third side portions are penetrated through the second side portions.

9. The silent tire according to claim 8, 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.

10. The silent tire according to claim 8, characterized in that: The elastic expansion member is a metal sheet element.

Images