Low-rolling-resistance and low-noise tire for new energy automobile

Abstract

The utility model discloses a low-rolling-resistance and low-noise tire for a new energy automobile, and belongs to the technical field of tires. The low-rolling-resistance and low-noise tire for the new energy automobile comprises a tire body, and the tire body is sequentially provided with an airtight layer, a cord fabric layer, a belted layer, a cap ply, a mute layer and a tread layer from inside to outside; the tread layer comprises a tread middle area and a tire shoulder area; the tire shoulder areas are arranged on the two sides of the tread middle area; a drainage groove set is arranged in the middle area of the tread, and a first tire shoulder pattern and a second tire shoulder pattern are arranged in the tire shoulder area. The mute layer is arranged, so that the tire noise is effectively reduced; by arranging the drainage groove group, the drainage performance can be greatly improved, rapid drainage is realized, the tire resistance is reduced, and the braking and control performance of the tire on a wet and slippery road surface is enhanced; the first tire shoulder pattern and the second tire shoulder pattern are asymmetrical to form an uninterrupted closed tire shoulder, so that on one hand, noise generated by resonance of the tire pattern blocks can be effectively reduced; on the other hand, the controllability can be improved.

Description

Technical Field

[0001] The present application relates to a low rolling resistance and low noise tire for new energy vehicles, belonging to the technical field of tires. Background Art

[0002] Tires are circular elastic rubber products that roll on the ground and are installed on various vehicles or machines. They are usually installed on metal rims, can support the vehicle body, buffer external impacts, achieve contact with the road surface and ensure the driving performance of the vehicle. Tires are often used under complex and harsh conditions. They are subjected to various deformations, loads, forces, and high and low temperature effects when driving, so they must have high load-bearing performance, traction performance, and buffering performance.

[0003] At present, with the gradual implementation of the "dual carbon" goals and the gradual improvement of environmental protection concepts, the number of new energy vehicles has gradually increased. However, on the one hand, new energy vehicles are limited by power battery technology, and endurance anxiety is the biggest problem. This requires tires to minimize energy loss and rolling resistance and extend the vehicle's range. On the other hand, when the tires are running at high speed, they will generate a lot of noise when they come into contact with the road or are impacted from the outside. The noise generated is transmitted inside the tire, and the internal air vibrates through the tire itself. The tire acts as a sound amplifier, so the noise will be amplified. New energy vehicles replace traditional internal combustion engines with electric motors, and the noise and vibration of electric motors are much smaller than those of internal combustion engines. It is precisely because there is no masking of internal combustion engine noise that the tire noise is more obvious in the noise inside the car when driving at high speed. This requires the road noise and vibration noise of the tires to be small in order to improve the driving comfort of new energy vehicles.

[0004] Chinese patent CN 216783201 U discloses a high-performance low rolling resistance tire, which ensures that the grip ring maintains a small deformation during operation by setting a grip ring and a support ring, thereby avoiding direct contact between the tire body and the bottom surface, reducing the resistance by reducing the contact area, and using the contact ring deformation to ensure grip, thereby solving the problem of excessive force and poor grip of existing tires leading to large rolling resistance. However, this patent does not solve the problem of tire noise, and the solution to the problem is single. Utility Model Content

[0005] In order to solve the above problems, the present application proposes a low rolling resistance and low noise tire for new energy vehicles. By setting a silent layer, the tire noise is effectively reduced; by setting a drainage groove group, the drainage performance can be greatly improved, rapid drainage can be achieved, tire resistance can be reduced, and the braking and handling performance of the tire on wet roads can be enhanced; by setting the first shoulder pattern and the second shoulder pattern to be asymmetrical to form an uninterrupted closed shoulder, on the one hand, the noise generated by the resonance of the tire pattern blocks can be effectively reduced; on the other hand, the handling can be improved.

[0006] According to one aspect of the present application, a low rolling resistance and low noise tire for new energy vehicles is provided, including a tire body, wherein the tire body is provided with an airtight layer, a cord layer, a belt layer, a cap layer, a noise-reducing layer and a tread layer in sequence from the inside to the outside; the tread layer includes a middle tread area and a shoulder area; the shoulder area is arranged on both sides of the middle tread area; the middle tread area is provided with a drainage groove group, and the shoulder area is provided with a first shoulder pattern and a second shoulder pattern.

[0007] Optionally, the drainage groove group includes a longitudinal groove and a plurality of central transverse grooves, the longitudinal grooves include a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove, and the first longitudinal groove, the second longitudinal groove, the third longitudinal groove and the fourth longitudinal groove are arranged in parallel.

[0008] Optionally, the central transverse groove is arranged along the circumference of the tire, and the central transverse groove is cross-connected with the third longitudinal pattern groove; the central transverse groove is inclined from the upper left to the lower right, forming an acute angle with the third longitudinal pattern groove.

[0009] Optionally, a tread groove is provided between the first longitudinal groove and the second longitudinal groove.

[0010] Optionally, a plurality of silencer blocks are provided in the longitudinal groove.

[0011] Optionally, the first shoulder pattern is an arc-shaped groove, and the second shoulder pattern includes a first fold line groove and a second fold line groove, and the first fold line groove is connected to the fourth longitudinal groove.

[0012] Optionally, a plurality of sound-absorbing sponges are arranged inside the sound-absorbing layer, and the sound-absorbing sponges are in the shape of long strips, one end of the sound-absorbing sponges is a raised portion, and the other end is a recessed portion; the sound-absorbing sponges are fixed to the inner side of the tread layer by an adhesive; the raised portion and the recessed portion are in the shape of arcs.

[0013] Optionally, the concave portion of the front sound-absorbing sponge is arranged corresponding to the convex portion of the rear sound-absorbing sponge, and the convex portion of each sound-absorbing sponge is arranged in a direction consistent with the forward direction of the tire.

[0014] Optionally, the cross-sectional bottom of the longitudinal groove is arc-shaped, and the upper width of the longitudinal groove gradually widens as it extends outward.

[0015] Optionally, a bead protection ring is provided at the outer bead of the tire body; and a bead steel ring is provided at the bead of the tire body.

[0016] The beneficial effects of this application include but are not limited to:

[0017] 1. The low rolling resistance and low noise tire for new energy vehicles provided in the present application can effectively reduce tire noise by setting a silent layer; can greatly improve drainage performance by setting a drainage groove group, achieve rapid drainage, reduce tire resistance, and enhance the braking and handling performance of the tire on wet roads; and can effectively reduce the noise generated by the resonance of the tire tread blocks on one hand by setting the first shoulder pattern and the second shoulder pattern to be asymmetrical to form an uninterrupted closed shoulder; on the other hand, it can have excellent grip and handling on both dry and wet roads.

[0018] 2. The low rolling resistance and low noise tire for new energy vehicles provided in the present application greatly improves the drainage performance, realizes rapid drainage, reduces tire resistance, and enhances the braking and handling performance of the tire on slippery roads by setting longitudinal grooves and central transverse grooves; the central transverse groove is cross-connected with the third longitudinal groove; the central transverse groove is inclined from the upper left to the lower right, forming an acute angle with the third longitudinal groove, which can fully absorb moisture and avoid the formation of water film on the one hand, and can form a chamfer on the other hand, which is conducive to puncturing the water film and realizing rapid drainage.

[0019] 3. The present application provides a low rolling resistance and low noise tire for new energy vehicles, in which a plurality of silencer blocks are arranged in the longitudinal grooves. The silencer blocks can disrupt the high-speed airflow in the longitudinal grooves, reduce the noise caused by the pumping effect, and make the riding experience quieter and more comfortable; the bottom of the cross-section of the longitudinal grooves is arc-shaped, and the width of the upper part gradually widens as it extends outward. This arrangement can effectively reduce the possibility of stones being caught in the longitudinal grooves.

[0020] 4. The present application provides a low rolling resistance and low noise tire for new energy vehicles, which has a silent layer. The silent layer is provided with a plurality of sound-absorbing sponges. The porous sponges absorb and reduce the mechanical noise generated by the resonance of the tire movement cavity, and the added sound-absorbing sponges will neither increase the excess weight of the tire to affect the power nor affect the service life of the tire; one end of the sound-absorbing sponge is a raised portion, and the other end is a recessed portion, the raised portion and the recessed portion are arc-shaped, the recessed portion of the front sound-absorbing sponge is arranged corresponding to the raised portion of the rear sound-absorbing sponge, and the sound-absorbing sponge is fixed to the inner side of the tread layer by an adhesive, the sound-absorbing sponge is easy to install, easy to position and reduces damage to the end surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a low rolling resistance and low noise tire for new energy vehicles involved in an embodiment of the present application;

[0023] Figure 2Schematic cross-sectional view of a low rolling resistance and low noise tire for a new energy vehicle according to an embodiment of the present application;

[0024] Figure 3 Schematic view of the tread structure of a low rolling resistance and low noise tire for a new energy vehicle according to an embodiment of the present application;

[0025] Figure 4 Schematic cross-sectional view of the first longitudinal groove of a low rolling resistance and low noise tire for a new energy vehicle according to an embodiment of the present application;

[0026] Figure 5 Front view structural diagram of the sound-absorbing sponge of a low rolling resistance and low noise tire for a new energy vehicle according to an embodiment of the present application.

[0027] List of components and reference numerals:

[0028] 1. Tire body; 2. Airtight layer; 3. Cord ply; 4. Belt layer; 5. Crown ply; 6. Soundproof layer; 7. Tread layer; 8. Shoulder area; 9. Central tread area; 10. Sound-absorbing sponge; 11. First longitudinal groove; 12. Second longitudinal groove; 13. Third longitudinal groove; 14. Fourth longitudinal groove; 15. Central transverse groove; 16. Pattern groove; 17. Sound-absorbing block; 18. Arc groove; 19. First broken line groove; 20. Second broken line groove; 21. Bead guard ring; 22. Bead steel ring. Detailed implementation manners

[0029] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail by way of examples in conjunction with the drawings of the specification.

[0030] In order to be able to more clearly understand the above objects, features and advantages of the present application, the present application will be further described in detail below in conjunction with the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0031] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0032] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] refer to Figure 1-Figure 5The embodiment of the present application discloses a low rolling resistance and low noise tire for new energy vehicles, including a tire body 1, wherein the tire body 1 is provided with an airtight layer 2, a cord layer 3, a belt layer 4, a cap layer 5, a silent layer 6 and a tread layer 7 from the inside to the outside; the tread layer 7 includes a tread middle area 9 and a shoulder area 8; the shoulder area 8 is arranged on both sides of the tread middle area 9; the tread middle area 9 is provided with a drainage groove group, and the shoulder area 8 is provided with a first shoulder pattern and a second shoulder pattern.

[0037] Specifically, by providing a silent layer 6, the tire noise can be effectively reduced; by providing a drainage groove group, the drainage performance can be greatly improved, rapid drainage can be achieved, tire resistance can be reduced, and the braking and handling performance of the tire on wet roads can be enhanced; by providing the first shoulder pattern and the second shoulder pattern to be asymmetrical, an uninterrupted closed shoulder is formed, which can effectively reduce the noise generated by the resonance of the tire pattern blocks on the one hand; on the other hand, it has excellent grip and handling on both dry and wet roads.

[0038] Specifically, the airtight layer 2, the carcass layer 3, the belt layer 4 and the cap layer 5 are provided to improve the impact resistance of the tire, effectively reduce the tire being punctured by hard objects, reduce the occurrence of tire blowouts, and ensure driving safety.

[0039] As an embodiment, the drainage groove group includes a longitudinal groove and a plurality of central transverse grooves 15, the longitudinal grooves include a first longitudinal groove 11, a second longitudinal groove 12, a third longitudinal groove 13 and a fourth longitudinal groove 14, and the first longitudinal groove 11, the second longitudinal groove 12, the third longitudinal groove 13 and the fourth longitudinal groove 14 are arranged in parallel.

[0040] Specifically, by providing the longitudinal grooves and the central transverse grooves 15, the drainage performance is greatly improved, rapid drainage is achieved, tire resistance is reduced, and the braking and handling performance of the tire on wet roads is enhanced.

[0041] Specifically, the present application does not make specific limitations on the number, length and depth of the central transverse grooves 15, and those skilled in the art may make selections based on actual conditions.

[0042] Specifically, the depth of the longitudinal groove is 3-4 mm, and the depth of the central transverse groove 15 is 2-3 mm.

[0043] As an implementation mode, the central transverse groove 15 is arranged along the circumferential direction of the tire, and the central transverse groove 15 is cross-connected with the third longitudinal groove 13 ; the central transverse groove 15 is inclined from the upper left to the lower right, and forms an acute angle with the third longitudinal groove 13 .

[0044] Specifically, the central transverse groove 15 is inclined from the upper left to the lower right, forming an acute angle with the third longitudinal groove 13. The two are staggered with each other. On the one hand, they can fully absorb water and avoid the formation of water film. On the other hand, they can form chamfers, which is conducive to puncturing the water film and achieving rapid drainage.

[0045] As an implementation manner, a tread groove 16 is provided between the first longitudinal groove 11 and the second longitudinal groove 12 .

[0046] Specifically, the arrangement of the tread grooves 16 can effectively reduce the noise generated by the resonance of the tire tread blocks, and is conducive to puncturing the water film, accelerating drainage, and reducing tire resistance.

[0047] Specifically, by providing the tread grooves 16 , the entire tread middle area 9 forms an asymmetric structure, so that it has excellent grip and handling on both dry and wet roads.

[0048] Specifically, the depth of the groove 16 is 1-2 mm.

[0049] As an implementation mode, a plurality of silencer blocks 17 are provided in the longitudinal groove.

[0050] Specifically, a plurality of silencer blocks 17 are provided in the longitudinal grooves. The silencer blocks 17 can disrupt the high-speed airflow in the longitudinal grooves, reduce the noise caused by the pumping effect, and make the riding experience quieter and more comfortable.

[0051] Specifically, the present application does not make any specific limitation on the number and shape of the silencer blocks 17, and those skilled in the art may make a selection according to actual conditions.

[0052] As an implementation manner, the first shoulder pattern is an arcuate groove 18 , and the second shoulder pattern includes a first fold line groove 19 and a second fold line groove 20 , and the first fold line groove 19 is connected to the fourth longitudinal groove 14 .

[0053] Specifically, the first shoulder pattern and the second shoulder pattern are asymmetrical, forming an uninterrupted closed shoulder, which can effectively reduce the noise generated by the resonance of the tire tread blocks on one hand; on the other hand, it enables it to have excellent grip and handling on both dry and wet roads.

[0054] As an implementation mode, a plurality of sound-absorbing sponges 10 are provided inside the sound-absorbing layer 6. The sound-absorbing sponges 10 are in the shape of long strips, one end of the sound-absorbing sponges 10 is a raised portion, and the other end is a recessed portion. The sound-absorbing sponges 10 are fixed to the inner side of the tread layer 7 by adhesive. The raised portion and the recessed portion are in the shape of arcs.

[0055] Specifically, the sound-absorbing layer 6 is provided with a plurality of sound-absorbing sponges 10, and the porous sponges absorb and reduce the mechanical noise generated by the resonance of the tire movement cavity, and the added sound-absorbing sponges 10 will neither increase the tire's excess weight to affect the power nor affect the tire's service life.

[0056] Specifically, the present application does not make a specific limitation on the number of the sound-absorbing sponges 10 , and those skilled in the art may make a selection according to actual conditions.

[0057] Specifically, the thickness of the sound absorbing sponge 10 is 10-20 mm.

[0058] As an implementation mode, the concave portion of the front sound-absorbing sponge 10 is arranged corresponding to the convex portion of the rear sound-absorbing sponge 10, and the convex portion of each sound-absorbing sponge 10 is arranged in a direction consistent with the forward direction of the tire.

[0059] Specifically, one end of the sound-absorbing sponge 10 is a raised portion, and the other end is a recessed portion, the raised portion and the recessed portion are arc-shaped, the recessed portion of the front sound-absorbing sponge 10 is arranged corresponding to the raised portion of the rear sound-absorbing sponge 10, and the sound-absorbing sponge 10 is fixed to the inner side of the tread layer 7 by an adhesive, the sound-absorbing sponge 10 is easy to install, easy to position and reduces damage to the end surface.

[0060] As an implementation manner, the cross-sectional bottom of the longitudinal groove is arc-shaped, and the width of the upper portion of the longitudinal groove gradually widens as it extends outward.

[0061] Specifically, the bottom of the longitudinal groove cross section is arc-shaped, and the upper width of the longitudinal groove gradually widens as it extends outward, which can reduce the possibility of stones being embedded in the longitudinal groove during the use of the tire, affecting the service life of the tire and driving safety.

[0062] As an implementation manner, a bead protection ring 21 is provided at the outer bead of the tire body 1 ; a bead steel ring 22 is provided at the bead of the tire body 1 .

[0063] Specifically, the bead protection ring 21 is arranged at the outer bead of the tire body 1, which can protect the tire from being damaged by the wheel hub and affecting the normal use of the tire; by arranging the bead steel ring 22 at the bead of the tire body 1, the tire can be firmly installed on the wheel hub, ensuring that the tire can be firmly fixed on the wheel hub.

[0064] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0065] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A low rolling resistance and low noise tire for new energy vehicles, comprising a tire body, characterized in that: The tire body is provided with an airtight layer, a cord layer, a belt layer, a cap layer, a noise-reducing layer and a tread layer in sequence from the inside to the outside; the tread layer includes a middle tread area and a shoulder area; the shoulder area is arranged on both sides of the middle tread area; the middle tread area is provided with a drainage groove group, and the shoulder area is provided with a first shoulder pattern and a second shoulder pattern.

2. A low rolling resistance and low noise tire for new energy vehicles according to claim 1, characterized in that: The drainage groove group includes a longitudinal groove and a plurality of central transverse grooves, the longitudinal grooves include a first longitudinal groove, a second longitudinal groove, a third longitudinal groove and a fourth longitudinal groove, and the first longitudinal groove, the second longitudinal groove, the third longitudinal groove and the fourth longitudinal groove are arranged in parallel.

3. A low rolling resistance and low noise tire for new energy vehicles according to claim 2, characterized in that: The central transverse groove is arranged along the circumferential direction of the tire, and the central transverse groove is cross-connected with the third longitudinal groove; the central transverse groove is inclined from the upper left to the lower right, and forms an acute angle with the third longitudinal groove.

4. The low rolling resistance and low noise tire for new energy vehicles according to claim 3, characterized in that: A tread groove is provided between the first longitudinal groove and the second longitudinal groove.

5. The low rolling resistance and low noise tire for new energy vehicles according to claim 2, characterized in that: A plurality of silencer blocks are arranged in the longitudinal groove.

6. The low rolling resistance and low noise tire for new energy vehicles according to claim 2, characterized in that: The first shoulder pattern is an arc-shaped groove, and the second shoulder pattern includes a first fold line groove and a second fold line groove, and the first fold line groove is connected to the fourth longitudinal groove.

7. The low rolling resistance and low noise tire for new energy vehicles according to claim 1, characterized in that: A plurality of sound-absorbing sponges are arranged inside the sound-silent layer. The sound-absorbing sponges are in the shape of long strips, one end of which is a raised portion and the other end is a recessed portion. The sound-absorbing sponges are fixed to the inner side of the tread layer by adhesive. The raised portion and the recessed portion are in the shape of arcs.

8. The low rolling resistance and low noise tire for new energy vehicles according to claim 7, characterized in that: The concave portion of the front sound-absorbing sponge is arranged correspondingly to the convex portion of the rear sound-absorbing sponge, and the arrangement direction of the convex portion of each sound-absorbing sponge is consistent with the traveling direction of the tire.

9. The low rolling resistance and low noise tire for new energy vehicles according to claim 2, characterized in that: The cross-sectional bottom of the longitudinal groove is arc-shaped, and the width of the upper portion of the longitudinal groove gradually widens as it extends outward.

10. The low rolling resistance and low noise tire for new energy vehicles according to claim 7, characterized in that: A bead protection ring is arranged at the outer bead of the tire body; and a bead steel ring is arranged at the bead of the tire body.

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