Tire having heat dissipation function

Abstract

Provided is a tire having a heat dissipation function, comprising a carcass ply (4), shoulders (1), a belt layer (7), and a crown. Each shoulder is provided with a plurality of heat dissipation holes, and heights of the heat dissipation holes are at a same horizontal height as the widest section of the belt layer and / or located below the horizontal height of the widest section of the belt layer. Heat dissipation holes located at the same horizontal height as the widest section of the belt layer are first heat dissipation holes (2), and heat dissipation holes lower than the horizontal height of the widest section of the belt layer are second heat dissipation holes (3). The first heat dissipation holes are evenly distributed in a circumferential direction, and a central axis of the circumference coincides with a central axis of the tire. Heat in the interior of crown rubber during running of the tire is dissipated by means of an airflow in the heat dissipation holes of the shoulder portions, so that the temperature of the tire can be reduced well.

Description

Tire with heat dissipation function Technical Field

[0001] The utility model relates to the technical field of automobile tires, in particular to a tire with a heat dissipation function. Background Art

[0002] Automobile tires are one of the important parts of an automobile. They are in direct contact with the road surface and work together with the automobile suspension to mitigate the impact of the automobile when driving, ensuring good ride comfort and driving smoothness; ensuring good adhesion between the wheels and the road surface; improving the automobile's traction, braking and passability; and bearing the weight of the automobile. The important role that tires play in automobiles is receiving more and more attention.

[0003] During the operation of the tire, the crown part is constantly flexing and deforming, and the heat generated by the crown will be continuously transferred and accumulated along the belt layer to the thickest shoulder position, making the heat generated in the shoulder area higher than other parts. Since it is the thickest part of all parts of the tire, the heat dissipation is also the least efficient, which can easily lead to the common problem of shoulder bulging caused by heat generation.

[0004] In traditional 4-layer belt structure tires and 3-layer belt plus shoulder zero-degree belt structure tire technologies, in order to reduce the heat generated by the tire during operation, a double-layer tread structure is usually adopted on the tire tread rubber. For example, a double-layer tread rubber is used, with the upper layer being crown wear-resistant rubber and the lower layer being low-heat generating rubber, thereby reducing the heat generated by the tire, improving the tire's load-bearing, durability and high-speed performance, and extending the tire's service life.

[0005] Due to the viscoelastic properties of rubber, the energy hysteresis loss during tire operation will cause the rubber to generate heat. The thicker the rubber, the higher the heat generated by the rubber and the more difficult it is to conduct and dissipate the heat. As the tire temperature rises, the mechanical properties of the rubber decrease and even degrade and fail, thereby reducing the tire's load-bearing, durability and high-speed performance, and shortening the tire's service life. Therefore, the thickness of the tire's crown wear-resistant rubber should not be too thick. On the other hand, the thickness of the crown rubber is related to the wear of the tire. The thicker the crown wear-resistant rubber, the larger the wear volume and the longer the tire's wear mileage.

[0006] In order to improve the wear resistance of the tire, the tire needs to have a thicker crown wear-resistant rubber. Therefore, the double-layer tread rubber technology using crown wear-resistant rubber and low heat generation rubber cannot solve the problem of tires having both high wear resistance and good heat generation.

[0007] Therefore, there is an urgent need to provide a heat dissipation structure with good heat dissipation effect and effective effect on the tire shoulder. Summary of the Invention

[0008] The purpose of the invention of the utility model is to overcome the problems existing in the prior art and provide a tire structure with good heat dissipation effect.

[0009] The technical solution of this utility model is as follows:

[0010] A tire with a heat dissipation function comprises a carcass cord, a shoulder, a belt layer and a crown. A plurality of heat dissipation holes are provided in the shoulder. The heat dissipation holes are at the same level as the widest belt layer and / or are located below the level of the widest belt layer. The heat dissipation holes located at the same level as the widest belt layer are first heat dissipation holes, and the heat dissipation holes located below the level of the widest belt layer are second heat dissipation holes. The first heat dissipation holes are evenly distributed along the circumferential direction, and the central axis of the circumference coincides with the central axis of the tire.

[0011] The distance between the bottom of the first heat dissipation hole and the widest beam layer is greater than or equal to 1 mm.

[0012] Wherein, the distance between the first heat dissipation hole and the carcass cord is greater than or equal to 0.5 mm.

[0013] Wherein, the cross-sectional shape of the first heat dissipation hole is circular, elliptical, rectangular or regular polygonal.

[0014] Wherein, the cross-sectional width of the first heat dissipation hole is greater than or equal to 1 mm.

[0015] The minimum spacing between the first heat dissipation holes is greater than or equal to 1 mm.

[0016] Among them, there is at least one row of second heat dissipation holes, each row of second heat dissipation holes is evenly distributed along the circumferential direction, and is staggered with the first heat dissipation holes or an adjacent row of second heat dissipation holes, and the minimum distance between the heat dissipation holes is greater than or equal to 1mm.

[0017] Beneficial effects

[0018] The heat dissipation holes cannot expose the belt steel wires and carcass cord steel wires to the air. The utility model dissipates the heat inside the crown rubber during tire operation through the air flow through the shoulder heat dissipation holes, which can effectively reduce the temperature of the tire. It can solve the problem of tire heat generation while maintaining a large volume of crown wear-resistant rubber in the tire. Therefore, the tire can have high wear resistance and excellent load-bearing, durability and high-speed performance, which can extend the service life of the tire. This structure is also applicable to tires with a four-layer belt plus shoulder zero-degree structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the solutions in this application, a brief introduction will be given below to the drawings required for use in the description of the embodiments of this application. Obviously, the drawings described below are some embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] FIG1 is a schematic structural diagram of embodiment 1 of the present utility model.

[0021] FIG2 is a schematic structural diagram of embodiment 2 of the present invention.

[0022] FIG3 is a schematic diagram of the distribution of heat dissipation holes on the side panel of Example 2 of the present utility model.

[0023] Explanation of reference numerals: 1 - shoulder, 2 - first heat dissipation hole, 3 - second heat dissipation hole, 4 - carcass cord, 5 - tread, 6 - sidewall, 7 - belt layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0028] Example

[0029] A tire with heat dissipation function, as shown in FIG1 , includes a carcass cord 4, a shoulder 1, a belt layer 7 and a crown, a tread 5, and a sidewall 6. The tread 5 is formed with a crown, and heat dissipation holes are formed in the shoulder 1 through the sidewall 6. The shoulder 1 is provided with a plurality of heat dissipation holes, and the height of the heat dissipation holes is at the same level as the widest belt layer 7 and is located below the level of the widest belt layer 7.

[0030] The heat dissipation holes at the same level as the widest belt layer 7 are first heat dissipation holes 2, and the heat dissipation holes below the level of the widest belt layer 7 are second heat dissipation holes 3.

[0031] The first heat dissipation holes 2 are evenly distributed along the circumferential direction, and the central axis of the circumference coincides with the central axis of the tire.

[0032] The combined design of the first heat dissipation holes 2 and the second heat dissipation holes 3 can effectively improve the heat dissipation efficiency.

[0033] The distance between the bottom of the first heat dissipation hole 2 and the widest band ply 7 is greater than or equal to 1 mm; the distance between the first heat dissipation hole 2 and the carcass ply 4 is greater than or equal to 0.5 mm.

[0034] The distance between the bottom of the first heat dissipation hole 2 and the widest band ply 7 is greater than or equal to 3 mm; the distance between the first heat dissipation hole 2 and the carcass ply 4 is greater than or equal to 2 mm.

[0035] The cross-sectional shape of the first heat dissipation hole 2 is circular, elliptical, rectangular or regular polygonal. Various shapes of heat dissipation holes are suitable for different tire structures.

[0036] The cross-sectional width of the first heat dissipation hole 2 is greater than or equal to 1 mm.

[0037] Example 2, as shown in FIG2 , is different from Example 1 in that:

[0038] A tire with a heat dissipation function comprises a carcass cord 4, a shoulder 1, a belt layer 7 and a crown. A plurality of heat dissipation holes are provided in the shoulder 1. The heat dissipation holes are at the same level as the widest belt layer 7 or below the level of the widest belt layer 7. The heat dissipation holes at the same level as the widest belt layer 7 are first heat dissipation holes 2, and the heat dissipation holes below the level of the widest belt layer 7 are second heat dissipation holes 3. The first heat dissipation holes 2 are evenly distributed along the circumferential direction, and the central axis of the circumference coincides with the central axis of the tire.

[0039] The second heat dissipation holes 3 can be independently provided or designed in combination with the first heat dissipation holes 2 , both of which can effectively improve the heat dissipation efficiency.

[0040] Example 3, as shown in FIG3 , is different from Example 1 in that:

[0041] At least one row of second heat dissipation holes 3 is provided. The second heat dissipation holes 3 in each row are evenly distributed along the circumferential direction and are staggered with the first heat dissipation holes 2 or an adjacent row of second heat dissipation holes 3 .

[0042] The angle between the central axis of the heat dissipation hole and the central axis of the tire is -45°~45°.

[0043] The bottom of the heat dissipation hole is at the same level as the widest belt layer 7 and / or is located below the level of the widest belt layer 7 .

[0044] The radial angle between the first heat dissipation hole 2 and the second heat dissipation hole 3 can be 0 degrees, preferably offset by a certain angle. In this embodiment, the first heat dissipation hole 2 and the second heat dissipation hole 3 are radially offset by a certain angle, and the thickness of the rubber material between adjacent heat dissipation holes is greater than or equal to 1 mm. The remaining parts are the same as in Example 1 and are not further described here.

[0045] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.

Claims

1. A tire with heat dissipation function, characterized in that: It includes a carcass cord, a shoulder, a belt layer and a crown. A plurality of heat dissipation holes are opened in the shoulder. The height of the heat dissipation holes is at the same level as the widest belt layer and / or is located below the level of the widest belt layer. The heat dissipation holes located at the same level as the widest belt layer are first heat dissipation holes, and the heat dissipation holes below the level of the widest belt layer are second heat dissipation holes. The first heat dissipation holes are evenly distributed along the circumferential direction, and the central axis of the circumference coincides with the central axis of the tire.

2. The tire with heat dissipation function according to claim 1, characterized in that: The distance between the bottom of the first heat dissipation hole and the widest band layer is greater than or equal to 1 mm.

3. The tire with heat dissipation function according to claim 1, characterized in that: The distance between the first heat dissipation hole and the carcass cord is greater than or equal to 0.5 mm.

4. The tire with heat dissipation function according to claim 1, characterized in that: The cross-sectional shape of the first heat dissipation hole is circular, elliptical or rectangular.

5. The tire with heat dissipation function according to claim 4, characterized in that: The cross-sectional width of the first heat dissipation hole is greater than or equal to 1 mm.

6. The tire with heat dissipation function according to claim 1, characterized in that: The minimum spacing between the first heat dissipation holes is greater than or equal to 1 mm.

7. The tire with heat dissipation function according to claim 1, characterized in that: At least one row of second heat dissipation holes is provided, and each row of second heat dissipation holes is evenly distributed along the circumferential direction and is staggered with the first heat dissipation holes or an adjacent row of second heat dissipation holes.

8. The tire with heat dissipation function according to claim 7, characterized in that: The minimum distance between the second heat dissipation holes is greater than or equal to 1 mm.

9. The tire with heat dissipation function according to claim 4, characterized in that: The angle between the central axis of the heat dissipation hole and the central axis of the tire is -45° to 45°.

10. The tire with heat dissipation function according to claim 4, characterized in that: The bottom of the heat dissipation hole is at the same level as the widest belt layer and / or is below the widest belt layer.

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