Silent tire and tire mold

Abstract

The utility model discloses a mute tire and a tire mold, and aims to solve the problem that the noise of the conventional tire is high during running. The tire comprises a tread part and a sidewall part, the sidewall part is provided with a groove, a pattern unit in the groove comprises a plurality of linear structures, and at least part of the pattern unit is a deformation part. When the tire runs, the deformation parts deform to shield partial gaps between the adjacent linear structures, airflow entering is reduced, and air friction noise is lowered. The top end of the linear structure is a deformation part, the outer surfaces can be located on the same plane during deformation, the section of the linear structure is triangular or trapezoidal, the included angle is 20-45 degrees, the height difference between the top end and the bottom face of the groove is 0.15-0.6 mm, the adjacent gap is 0.1-0.5 mm, and the line type can be a straight line, a broken line or an arc line. The tire mold is provided with protruding modules and textures and is used for forming grooves and pattern units. According to the scheme, noise is effectively reduced while the tire performance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, and in particular to a silent tire and a tire mold. Background Technology

[0002] Car tires are one of the most important components of a car. They are in direct contact with the ground and work with the car's suspension to absorb the impacts the car experiences while driving, ensuring good ride comfort and smooth driving; ensuring good adhesion between the wheels and the road surface; and improving the car's traction, braking, and passability.

[0003] Tire noise is generated by the interaction between the tires and the road surface, the interaction between the tires and the air, and the deformation of the tires. It is the main source of noise in automobiles. Traditional tires typically use random lines to fill and arrange the sidewall pattern, forming uneven grooves on the sidewall. These grooves interact with the air during tire movement, making them more prone to generating noise. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a tire and a tire mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A silent tire and a tire mold include a tread portion and a sidewall portion. The sidewall portion has a groove, and a pattern unit is provided in the groove. The pattern unit includes a plurality of linear structures. The linear structures are protruding relative to the bottom surface of the groove and extend continuously along the surface of the sidewall portion. At least a portion of the linear structure is a deformable portion. When the tire is running, the deformable portion deforms and blocks at least a portion of the gap between two adjacent linear structures.

[0007] Furthermore, the linear structure includes a connecting portion connected to the bottom surface of the groove and a top portion away from the bottom surface of the groove, the top portion being a deformable portion.

[0008] Furthermore, when the deformable part deforms, the outer surfaces of the deformable parts of each linear structure are on the same plane.

[0009] Furthermore, the arrangement direction of each linear structure is set at an angle to the direction of airflow through the pattern unit.

[0010] Furthermore, the cross-section of the linear structure is triangular or trapezoidal, with the included angle X between the vertex of the triangle or the two hypotenuses of the trapezoid being 20° to 45°.

[0011] Furthermore, the cross-section of the linear structure is triangular, with the apex of the triangle being the deformation section.

[0012] Furthermore, the height difference H between the top of the linear structure and the bottom of the groove is 0.15 mm to 0.6 mm.

[0013] Furthermore, the gap B between two adjacent linear structures is 0.1 mm to 0.5 mm.

[0014] Furthermore, linear structures include at least one of straight lines, broken lines, and arcs.

[0015] According to another aspect of the present invention, a tire mold is provided for manufacturing the aforementioned tire, wherein the tire mold is provided with at least one raised module for forming a groove in the tire, and the raised module is provided with multiple textures for forming a pattern unit of the tire.

[0016] The beneficial effects of this utility model are as follows:

[0017] By designing the linear structure on the tire sidewall as a deformable section, this section deforms under the influence of inertial forces and wind during tire movement. This deformation section effectively shields the gaps, reducing the airflow entering those gaps and thus decreasing friction between the linear structure and the air, thereby reducing noise. Furthermore, because the linear structure is located on the sidewall, it does not affect the contact between the tire tread and the road surface, ensuring that the tire's grip and other performance characteristics are effectively maintained.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the pattern unit when the linear structure of the silent tire and tire mold proposed in this utility model is a broken line.

[0020] Figure 2 This utility model proposes a silent tire and a tire mold. Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] Figure 3 This utility model proposes a silent tire and a tire mold. Figure 1 A schematic diagram of the cross-sectional structure;

[0022] Figure 4 This utility model proposes a silent tire and a tire mold. Figure 3A schematic diagram of the structure when the deformable part in the middle undergoes deformation;

[0023] Figure 5 This is a schematic diagram of the pattern unit structure when the linear structure of the silent tire and tire mold proposed in this utility model is a straight line.

[0024] Figure 6 This is a schematic diagram of the pattern unit when the linear structure of the silent tire and tire mold proposed in this utility model is an arc.

[0025] In the diagram: 10, pattern unit; 20, linear structure; 21, deformation part. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] like Figures 1 to 6 The silent tire shown includes a tread portion and a sidewall portion. The sidewall portion has a groove, and a pattern unit 10 is provided in the groove. The pattern unit 10 includes a plurality of linear structures 20. The linear structures 20 are protruding relative to the bottom surface of the groove and extend continuously along the surface of the sidewall portion. At least a portion of the linear structure 20 is a deformable portion 21. When the tire is running, the deformable portion 21 deforms and blocks at least a portion of the gap between two adjacent linear structures 20.

[0029] In this embodiment, the linear structure 20 on the tire sidewall is configured as a deformable part 21. This allows the deformable part 21 to deform under the influence of inertial forces, wind force, and other factors during tire movement. The deformable part 21 effectively blocks gaps, reducing the airflow entering the gaps and thus reducing friction between the linear structure 20 and the air, thereby lowering noise levels. Furthermore, because the linear structure 20 is located on the tire sidewall, it does not affect the contact between the tire tread and the road surface, ensuring that the tire's grip and other performance characteristics are effectively maintained.

[0030] like Figure 3 and Figure 4As shown, in this embodiment, the linear structure 20 includes a connecting portion connected to the bottom surface of the groove and a top portion away from the bottom surface of the groove. Since the top portion is far from the bottom surface of the groove, it is a free end. This end is configured as a deformable portion 21, making it easier to deform under the influence of airflow and other factors, resulting in better gap coverage and noise reduction. Besides configuring the top portion as a deformable portion 21, a portion of the connecting portion, i.e., the part of the connecting portion near the top portion, can also be configured as a deformable portion 21. This makes most of the linear structure 20 deformable portions 21, with only a small portion connected to the groove being non-deformable. This allows for a greater degree of deformation of the deformable portion 21, which is beneficial for improving the noise reduction effect.

[0031] It should be noted that the deformation form of the deformation part 21 can be achieved by the material. That is, the deformation part 21 can be made of a material with high flexibility. The material of the deformation part 21 has higher flexibility than other parts of the tire, so that it can deform relative to other parts.

[0032] Preferably, when the deformable portion 21 deforms, the outer surfaces of the deformable portions 21 of each linear structure 20 are on the same plane, such as... Figure 4 As shown. In this way, the airflow passing over the outer surface of the deformable part 21 will sequentially pass through each deformable part 21 along the outer surface. Since the direction of the gap opening is the same as the airflow direction, it is difficult for the airflow to enter the inner side of the gap, thereby reducing the interaction between the airflow and the gap and improving the noise reduction effect. Figure 4 For example, the airflow acts on the deformation part 21 from right to left, and the deformation part 21 bends and deforms to the left. At this time, the gap also bends to the left and its opening faces to the left, making it difficult for the airflow to enter the gap, thus ensuring the noise reduction effect.

[0033] More preferably, since the linear structure 20 is set in the groove, when the deformable part 21 deforms in this embodiment, the outer surface is flush with the outer edge surface of the groove, so that the deformable part 21 and the outer edge surface of the groove, that is, the outer surface of the tire sidewall, can cooperate, making the airflow on the tire sidewall smoother and reducing the impact of uneven surface on airflow and thus reducing noise.

[0034] In addition to setting the shape change of the linear structure 20, this embodiment also sets the specific form and size of the linear structure 20, so that the various parameters of the linear structure 20 can match its deformation and improve the noise reduction effect.

[0035] like Figure 1As shown, in this embodiment, the arrangement of the linear structures 20 is such that the direction of the arrangement of each linear structure 20 is at an angle to the direction of the airflow through the pattern unit 10. Furthermore, the linear structures 20 are arranged at approximately equal intervals. This arrangement ensures that the airflow can stably act on the deformation part 21, thus guaranteeing the deformation effect of the deformation part 21. On the other hand, when sound waves pass through the linear structures 20, they pass through countless tiny rubber strip-like structures. The superposition and collision of these structures gradually weaken the sound wave energy, thereby reducing noise. Simultaneously, the dense and regular linear structures 20 multiply the surface area of ​​the tire. When tire vibration is transmitted to the linear structures 20, the linear structures 20 convert the vibration wave into heat energy and release it, thus preventing vibration from generating noise and also promoting exhaust efficiency during tire vulcanization.

[0036] like Figure 2 As shown, the linear structure 20 in this embodiment is long and narrow, with a cross section perpendicular to the length direction. The cross section is triangular or trapezoidal. In this embodiment, a triangular shape is preferred, and the tip of the triangle is the top part, which is the deformation part 21. The triangular shape is more conducive to the deformation of the tip, resulting in a better deformation effect and a better noise reduction effect.

[0037] like Figure 2 As shown, for the specific size of the linear structure 20, this embodiment adopts an angle X between the apex of the triangle or the two hypotenuses of the trapezoid of 20° to 45°, so that the tip is more likely to deform and avoids the effect of excessive thickness on deformation.

[0038] Meanwhile, in this embodiment, the height difference H between the top of the linear structure 20 and the bottom of the groove is set to 0.15mm to 0.6mm. This height difference H is essentially the overall height of the linear structure 20. This avoids the situation where the deformation part 21 is not deformed enough or even cannot deform due to the height being too low, making it easier for the tip to deform. It also avoids the situation where the height is too high and there is too much friction with the air, thus improving the overall noise reduction effect.

[0039] like Figure 1 As shown, in this embodiment, the gap B between two adjacent linear structures 20 is set to 0.1mm to 0.5mm, so that the linear structures 20 are arranged in a close manner. When the deformable part 21 bends and deforms, it can block the gap as much as possible, reduce the interaction between the airflow and the gap, and improve the noise reduction effect.

[0040] Optionally, the specific line type of the line type structure 20 can be set as needed, and the line type structure 20 may include at least one of a straight line, a polyline, and an arc. For example, Figure 1As shown, the linear structure 20 can be a polygonal line formed by bending and connecting two straight lines; or it can be as follows: Figure 5 As shown, a pure linear type is used; it can also be as follows: Figure 6 As shown, an arc shape is adopted. Of course, the specific shape of the linear structure 20 can be set as needed, and is not limited to the several methods given in this embodiment.

[0041] This embodiment also provides a tire mold for manufacturing the aforementioned tire. The tire mold has at least one raised module for forming the groove of the tire. The raised module has multiple textures for forming the pattern unit 10 of the tire. The specific form of the raised module and its textures can be set according to the required groove and pattern unit 10 to ensure that the structure of the processed tire sidewall and its pattern unit 10 meets the requirements.

[0042] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0043] 1. Solves the problem of excessive tire noise during driving in existing technologies;

[0044] 2. Reducing the friction between the linear structure and the air, and decreasing the interaction with the air, thus reducing noise;

[0045] 3. The linear structure is located on the sidewall, so it will not affect the contact between the tread and the road surface, thus ensuring that the tire's grip and other performance characteristics can be effectively utilized.

[0046] 4. When sound waves pass through the linear structure, they pass through countless tiny rubber strips. The superposition and collision of these structures gradually weaken the sound wave energy, thereby reducing noise.

[0047] The dense, regular linear structure doubles the surface area of ​​the tire. When tire vibration is transmitted to the linear structure, the linear structure converts the vibration wave into heat energy and releases it, thereby avoiding vibration from generating noise and also promoting exhaust efficiency during tire vulcanization.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A silent tire, characterized in that, include: The tire tread and the tire sidewall, the tire sidewall having a groove, the groove having a pattern unit (10), the pattern unit (10) including a plurality of linear structures (20), the linear structures (20) protruding relative to the bottom surface of the groove and extending continuously along the surface of the tire sidewall; At least a portion of the linear structure (20) is a deformable part (21). When the tire is running, the deformable part (21) deforms and blocks at least a portion of the gap between two adjacent linear structures (20).

2. The silent tire according to claim 1, characterized in that, The linear structure (20) includes a connecting portion connected to the bottom surface of the groove and a top portion away from the bottom surface of the groove, the top portion being the deformable portion (21).

3. The silent tire according to claim 2, characterized in that, When the deformable part (21) deforms, the outer surfaces of the deformable parts (21) of each of the linear structures (20) are on the same plane.

4. The silent tire according to claim 1, characterized in that, The arrangement direction of each of the linear structures (20) is set at an angle to the direction of airflow through the pattern unit (10).

5. The silent tire according to claim 1, characterized in that, The cross-section of the linear structure (20) is triangular or trapezoidal, and the included angle X between the apex of the triangle or the two hypotenuses of the trapezoid is 20° to 45°.

6. The silent tire according to claim 5, characterized in that, The linear structure (20) has a triangular cross-section, and the apex of the triangle is the deformed part (21).

7. The silent tire according to claim 1, characterized in that, The height difference H between the top of the linear structure (20) and the bottom of the groove is 0.15 mm to 0.6 mm.

8. The silent tire according to claim 1, characterized in that, The gap B between two adjacent linear structures (20) is 0.1 mm to 0.5 mm.

9. The silent tire according to claim 1, characterized in that, The linear structure (20) includes at least one of a straight line, a broken line, and an arc.

10. A tire mold, characterized in that, For manufacturing a tire according to any one of claims 1 to 9, wherein the tire mold is provided with at least one raised module, the raised module being used to form a groove of the tire, the raised module being provided with a plurality of textures, the plurality of textures being used to form a pattern unit (10) of the tire.

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