A tire with low rolling resistance, high maneuverability and low resistance

Abstract

This invention relates to the field of tire technology and discloses a tire with low rolling resistance, high handling, and low electrical resistance, comprising a first crown, a second crown fixedly connected to the bottom of the first crown, and a third crown fixedly connected to the bottom of the second crown. This invention, by setting up a first crown, a second crown, a third crown, and vertical grooves, utilizes the vertical grooves on the first crown to pierce the water film during wet driving, thereby improving drainage efficiency and grip. On dry surfaces, the groove edges increase ground contact, enhancing handling response. Simultaneously, the groove distribution disrupts rolling noise frequencies to reduce noise, increases surface area to aid heat dissipation, buffers peak pressure to improve wear uniformity, and works synergistically with the low rolling resistance of the second crown and the electrical conductivity of the third crown. Testing has verified that this structure allows the tire to maintain a higher level of grip performance and achieve a rolling resistance coefficient reaching EU Class A.

Description

Technical Field

[0001] This invention belongs to the field of tire technology, specifically a tire with low rolling resistance, high handling, and low electrical resistance. Background Technology

[0002] Tires are the only elastomeric component of a vehicle that comes into contact with the road surface. Through their internal cord structure and rubber composite system, they achieve load-bearing, cushioning, driving, and braking functions. Low rolling resistance is achieved by optimizing polymer materials and tread patterns to reduce energy loss and improve range. High handling performance relies on enhanced sidewall stiffness and ground contact pattern distribution to ensure precise cornering response. Low resistance is achieved by using conductive carbon black or special formulas to establish electrostatic discharge pathways to avoid the risk of charge accumulation. This results in synergistic optimization in terms of energy efficiency, driving stability, and safety protection.

[0003] When matching tires to electric vehicles, operators often use corresponding traditional fuel vehicle tires for assembly. While existing tires have basic support, load-bearing, and driving functions, they are designed based on fuel vehicle specifications and cannot simultaneously meet the stringent requirements of electric vehicles for low rolling resistance to extend range, high handling to cope with high torque, and low resistance to ensure the safety of electronic systems. Therefore, improvements are needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a tire with low rolling resistance, high handling, and low electrical resistance, which has the advantage of low rolling resistance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tire with low rolling resistance, high handling, and low resistance, comprising a first crown portion, a second crown portion fixedly connected to the bottom of the first crown portion, a third crown portion fixedly connected to the bottom of the second crown portion, a vertical groove formed on the outer surface of the first crown portion, and the outer surface of the third crown portion fixedly connected to the inner surface of the first crown portion, wherein the third crown portion is made of conductive rubber.

[0006] Preferably, a first transverse groove is provided on both the left and right sides of the outer surface of the first crown, and the first transverse groove is evenly distributed around the first crown.

[0007] Preferably, a buffer layer is fixedly connected to the bottom of the third crown, and the buffer layer is made of modified natural rubber.

[0008] Preferably, a belt layer is fixedly connected to the bottom of the vertical groove, and the belt layer is made of lightweight steel wire cord with high strength and high modulus.

[0009] Preferably, a covering layer is fixedly connected to the bottom of the buffer layer, and the covering layer is made of halogenated butyl rubber.

[0010] Preferably, a reinforcing strip is fixedly connected to the inner surface of the covering layer, and the reinforcing strip is located on the left and right sides of the belt layer.

[0011] Preferably, a curtain layer is fixedly installed in the inner cavity of the covering layer, and the curtain layer is made of high-modulus, low-shrinkage polyester cord fabric.

[0012] Preferably, the outer surface of the first crown portion is provided with a second transverse groove, which is evenly distributed around the first crown portion.

[0013] Preferably, a third transverse groove is formed on the outer surface of the first crown portion, and the third transverse groove is evenly distributed around the first crown portion.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting up a first crown, a second crown, a third crown, and vertical grooves, allows the tire to pierce the water film when driving on wet surfaces, thereby improving drainage efficiency and grip. On dry surfaces, the groove edges increase ground contact, enhancing handling response. Simultaneously, the groove distribution disrupts rolling noise frequencies to reduce noise, increases surface area to aid heat dissipation, buffers peak pressure to improve wear uniformity, and works synergistically with the low rolling resistance of the second crown and the electrical conductivity of the third crown. Tests have verified that this structure allows the tire to maintain a higher level of grip performance and achieve a rolling resistance coefficient that meets EU Class A standards while optimizing noise performance.

[0015] 2. This invention incorporates a second lateral groove, a ply layer, a belt layer, and a reinforcing belt. The second lateral groove punctures the water film during wet driving and guides water flow to drain quickly, thereby enhancing wet grip. The belt layer and reinforcing belt form a rigid support to enhance lateral force bearing capacity and cornering stability. The ply layer utilizes its high modulus properties to tighten after inflation, forming a stable skeleton to provide lateral support. The synergistic effect of these structures enables the tire to achieve significantly improved grip and enhanced handling performance while maintaining low rolling resistance.

[0016] 3. This invention, by setting a third crown, a third lateral groove, and a ply layer, wherein the third crown is made of conductive rubber, providing a basis for static electricity discharge and forming a continuous conductive path, the ply layer ensures the dimensional stability of the tire after vulcanization through its low shrinkage characteristics, thereby maintaining the integrity of the conductive path, and the third lateral groove enhances wet handling while ensuring effective connection between the grounding part and the conductive path, the synergistic effect of the above structures significantly reduces the tire's volume resistivity and greatly improves the static electricity discharge efficiency, thereby effectively solving the problem of high resistance and ensuring the safety of the vehicle's electronic system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the reinforcing strip of the present invention; Figure 3 This is a schematic cross-sectional view of the belt layer of the present invention; Figure 4 This is a cross-sectional structural diagram of the coating layer of the present invention; Figure 5 This is a schematic diagram of the structure of the fabric layer of the present invention; Figure 6 This is a schematic diagram of the structure of the belt layer of the present invention; Figure 7 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Crown No. 1; 2. Crown No. 2; 3. Crown No. 3; 4. Vertical groove; 5. First transverse groove; 6. Second transverse groove; 7. Third transverse groove; 8. Covering layer; 9. Cord layer; 10. Buffer layer; 11. Belt layer; 12. Reinforcing belt. Detailed Implementation

[0019] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, this embodiment of the invention provides a tire with low rolling resistance, high handling, and low resistance, including a first crown 1, a second crown 2 fixedly connected to the bottom of the first crown 1, a third crown 3 fixedly connected to the bottom of the second crown 2, a vertical groove 4 formed on the outer surface of the first crown 1, and the outer surface of the third crown 3 fixedly connected to the inner surface of the first crown 1. The third crown 3 is made of conductive rubber.

[0021] By creating vertical grooves 4 on the first crown 1, the tire can pierce the water film when driving on wet surfaces to improve drainage efficiency and grip. On dry surfaces, the groove edges increase contact with the ground to enhance handling response. At the same time, the groove distribution disrupts the rolling noise frequency to reduce noise, increases the surface area to assist heat dissipation, buffers peak pressure to improve wear uniformity, and works synergistically with the low rolling resistance characteristics of the second crown 2 and the conductive channels of the third crown 3. Tests have verified that this structure can optimize noise performance while maintaining a higher level of grip and achieving the EU A rolling resistance coefficient.

[0022] Among them, the first transverse groove 5 is provided on both the left and right sides of the outer surface of the first crown 1, and the first transverse groove 5 is evenly distributed around the first crown 1.

[0023] The first transverse groove 5 bears the main lateral force when turning. It pierces the water film through its transverse groove and enhances wet grip. While ensuring lateral drainage efficiency, it further suppresses noise accumulation and achieves a balance between stable handling and quiet comfort.

[0024] Among them, the bottom of the No. 3 crown 3 is fixedly connected to a buffer layer 10, which is made of modified natural rubber.

[0025] Modified natural rubber retains its original advantages of high resilience and tear resistance while significantly improving modulus and dynamic stiffness. It also reduces hysteresis loss to suppress heat generation and help reduce rolling resistance. Its excellent adhesion to steel cords can achieve a synergistic effect of rigid transition, stress dispersion and low energy consumption, thereby enhancing tire handling stability and durability.

[0026] The bottom of the vertical groove 4 is fixedly connected to a belt layer 11, which is made of high-strength, high-modulus, lightweight steel wire cord.

[0027] High-strength, high-modulus lightweight steel cords, due to their high tensile strength, significantly reduce cord weight while ensuring crown rigidity to improve handling response, thereby reducing tire rolling inertia and hysteresis loss. Furthermore, the copper-plated steel wire surface exhibits excellent adhesion to rubber, preventing interlayer separation and extending fatigue life, ultimately achieving synergistic optimization of handling, durability, and low rolling resistance.

[0028] The bottom of the buffer layer 10 is fixedly connected to the covering layer 8, which is made of halogenated butyl rubber.

[0029] Halogenated butyl rubber has a dense molecular structure that can effectively block the penetration of air molecules to maintain stable tire pressure. It also has low hysteresis loss to reduce dynamic heat generation, high adhesion strength to the ply to resist interlayer separation, and excellent ozone aging resistance. It can meet the requirements of low rolling resistance and high handling while ensuring long-term airtightness without increasing energy consumption or rigidity.

[0030] The inner surface of the covering layer 8 is fixedly connected with a reinforcing strip 12, which is located on the left and right sides of the belt layer 11.

[0031] The reinforcing belt 12 can resist lateral compression and tensile deformation of the tire shoulder during cornering to enhance lateral rigidity, thereby improving steering response accuracy and cornering grip. At the same time, it disperses the concentrated stress at the end of the belt layer 11 to extend tire durability and reduces abrupt changes in stiffness in the tire shoulder and sidewall areas by means of rigid transition.

[0032] The inner cavity of the covering layer 8 is fixedly installed with a curtain layer 9, which is made of high-modulus, low-shrinkage polyester cord fabric.

[0033] High-modulus, low-shrinkage polyester cord fabric utilizes the high tensile strength and initial modulus resulting from its high molecular chain orientation to form a stable skeleton after inflation to resist internal pressure expansion and provide lateral rigidity. At the same time, its low shrinkage characteristics ensure dimensional stability during vulcanization to maintain contour accuracy.

[0034] Among them, the outer surface of the first crown 1 is provided with a second transverse groove 6, which is evenly distributed around the first crown 1.

[0035] The second transverse groove 6, through the combined layout of longitudinal and transverse grooves, receives the water flow discharged from the center and guides it to the tire shoulder, forming a continuous drainage path to enhance wetland safety. At the same time, the fine groove design disrupts the frequency of the tread blocks hitting the ground, avoiding sudden changes in grip force during the gradual change in rigidity and significantly reducing rolling noise.

[0036] Among them, the outer surface of the first crown 1 is provided with a third transverse groove 7, which is evenly distributed around the first crown 1.

[0037] The third lateral groove 7 runs through the center of the tread, providing precise directional stability when driving in a straight line, and uses the groove walls to quickly divert water to both sides to reduce the risk of hydroplaning, thereby improving handling and safety.

[0038] Working principle and usage process of this invention: When a vehicle is traveling in a straight line, the core area of ​​contact between the tire and the road surface is the crown. Crown 1, as the direct contact component, provides stable initial grip due to its high dynamic energy storage modulus. The vertical grooves 4 on the surface of Crown 1 enhance the ground engagement and improve handling response when the ground is dry. When the ground is wet, the grooves pierce the water film to improve drainage efficiency and grip. Meanwhile, Crown 2, due to its low hysteresis loss characteristics, significantly reduces energy loss during rolling to reduce rolling resistance. Crown 3, through its conductivity, forms a continuous conductive path to continuously discharge the static charge generated during driving, thereby achieving the basic performance of low rolling resistance and low resistance.

[0039] When a vehicle enters a curve or changes lanes, the lateral force gradually increases. The belt layer 11, as a high-strength lightweight steel belt, forms a rigid skeleton in the crown with its high modulus characteristics to resist the tread deformation caused by the lateral force, thereby improving steering response accuracy and cornering grip. The reinforcing belt 12 forms rigid support in the tire shoulder area to enhance the ability to withstand lateral forces and cornering stability. At the same time, the ply layer 9, made of high-modulus, low-shrinkage polyester cord fabric, extends from one side of the tire bead through the sidewall to the crown and then wraps back to the belt layer. Under the action of inflation pressure, it is tightened to form a stable tire skeleton to provide lateral support. The three work together to ensure that the vehicle always maintains precise control in the curve.

[0040] When driving in wet or rainy conditions, the first lateral groove 5, the second lateral groove 6, and the third lateral groove 7, located in different areas of the tire tread, each perform different drainage tasks. The first lateral groove 5, located in the tire shoulder area, uses the lateral grooves to puncture the water film when the tire rolls and guide the accumulated water towards the tire sidewall. The second lateral groove 6, through a combination of longitudinal and lateral grooves, receives the water flow from the central area and guides it to the tire shoulder to form a continuous drainage path. The third lateral groove 7 runs through the central area of ​​the tire tread and uses the groove walls to quickly divert the accumulated water to both sides to ensure that the central contact area always remains dry. At the same time, the conductive properties of the crown 3 and the low shrinkage properties of the ply layer 9 maintain the integrity of the conductive path, so that the tire can still ensure both handling safety and electrical safety in wet environments.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tire with low rolling resistance, high handling, and low electrical resistance, comprising a crown portion (1), characterized in that: The bottom of the first crown (1) is fixedly connected to the second crown (2), and the bottom of the second crown (2) is fixedly connected to the third crown (3). The outer surface of the first crown (1) is provided with a vertical groove (4), and the outer surface of the third crown (3) is fixedly connected to the inner surface of the first crown (1). The third crown (3) is made of conductive rubber.

2. The tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 1, characterized in that: The first transverse groove (5) is provided on both the left and right sides of the outer surface of the first crown (1), and the first transverse groove (5) is evenly distributed around the first crown (1).

3. The tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 1, characterized in that: The bottom of the third crown (3) is fixedly connected to a buffer layer (10), which is made of modified natural rubber.

4. A tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 1, characterized in that: The bottom of the vertical groove (4) is fixedly connected to a belt layer (11), which is made of high-strength, high-modulus, lightweight steel wire cord.

5. A tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 3, characterized in that: The bottom of the buffer layer (10) is fixedly connected to a covering layer (8), which is made of halogenated butyl rubber.

6. A tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 5, characterized in that: The inner surface of the covering layer (8) is fixedly connected with a reinforcing strip (12), which is located on the left and right sides of the belt layer (11).

7. A tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 5, characterized in that: The inner cavity of the covering layer (8) is fixedly installed with a curtain layer (9), which is made of high-modulus low-shrinkage polyester curtain fabric.

8. A tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 1, characterized in that: The outer surface of the first crown (1) is provided with a second transverse groove (6), which is evenly distributed around the first crown (1).

9. A tire with low rolling resistance, high handling capability, and low electrical resistance according to claim 1, characterized in that: The outer surface of the first crown (1) is provided with a third transverse groove (7), which is evenly distributed around the first crown (1).

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