Tire with optimized horizontal axis position and motor vehicle applying same

Abstract

The invention relates to the technical field of tire manufacturing, in particular to a tire with an optimized horizontal axis position and a motor vehicle applying the same. The section of the tire is divided into an upper tire side and a lower tire side by a horizontal axis X of the tire, the vertical distance between the horizontal axis X and a tread center point M is H1, the vertical distance between the horizontal axis X and a tire rim landing point C is H2, epsilon = H1 / H2 represents the position of the horizontal axis, and the optimal value range of epsilon is 0.5 < = epsilon lt; 1. According to the tire with the optimized horizontal axis position and the motor vehicle applying the tire, the durability of the tire can be rapidly, directly and reliably optimized and improved.

Description

Technical Field

[0001] The present application relates to the technical field of tire manufacturing, and in particular to a tire with optimized horizontal axis position and a motor vehicle using the tire. Background Art

[0002] The existing tire design considers multiple influencing factors, such as tire section width B, curvature radius of different positions of the upper sidewall arc tire section, etc., to improve the durability of the tire. However, this method of analysis is relatively complicated and slow, and cannot quickly, directly and reliably optimize and improve the durability of the tire.

[0003] The horizontal axis position of the tire is the horizontal position where the maximum width of the tire section is located, and it is also the thinnest position of the tire section, that is, the position where the sidewall thickness is the smallest. Whether the design of the horizontal axis position of the tire section is reasonable can directly affect the durability of the tire under inflation and loading conditions. However, there is no technical solution in the prior art that studies and optimizes the horizontal axis position of the tire, so as to quickly, directly and reliably optimize and improve the durability of the tire. Summary of the invention

[0004] The purpose of the present application is to provide a tire with optimized horizontal axis position and a motor vehicle using the same, so as to improve the durability of the tire through rapid, direct and reliable optimization.

[0005] In a first aspect, the present application provides a tire with an optimized horizontal axis position. The horizontal axis X of the tire divides the tire section into an upper sidewall and a lower sidewall. The vertical distance between the horizontal axis X and the center point M of the tread is H1, and the vertical distance between the horizontal axis X and the tire rim contact point C is H2. ε=H1 / H2 represents the horizontal axis position, and the optimal value range of ε is: 0.5≤ε<1.

[0006] Furthermore, according to the maximum tire pressure and maximum load that the tire can withstand, the tire operating condition types include at least standard pressure and standard load, high pressure and high load, and high pressure and low load; Considering the overall fatigue life of the tire, the optimal value of ε under the standard pressure and standard load, the high pressure and high load, and the high pressure and low load conditions is 0.72.

[0007] Furthermore, the parts of the tire include the tread, the sidewall and the bead, and a preferred value range or an optimal value of ε is selected accordingly according to the preferred priority requirements for fatigue life of different parts of the tire.

[0008] Furthermore, under standard pressure and load conditions, the ε interval corresponding to the optimal tread fatigue life is 0.5~0.9, the ε interval corresponding to the optimal sidewall fatigue life is 0.6~0.9, and the ε interval corresponding to the optimal tire bead fatigue life is 0.5~1.

[0009] Furthermore, under standard pressure and load conditions, the optimal value of ε corresponding to the maximum tread fatigue life is 0.72, the optimal value of ε corresponding to the maximum sidewall fatigue life is 0.85, and the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.95.

[0010] Furthermore, under high pressure and high load conditions, the ε interval corresponding to the optimal tread fatigue life is 0.7~1, the ε interval corresponding to the optimal sidewall fatigue life is 0.6~1, and the ε interval corresponding to the optimal bead fatigue life is 0.5~0.9.

[0011] Furthermore, under high pressure and high load conditions, the optimal value of ε corresponding to the maximum tread fatigue life is 0.72, the optimal value of ε corresponding to the maximum sidewall fatigue life is 0.85, and the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.62.

[0012] Furthermore, under high pressure and low load conditions, the ε interval corresponding to the optimal tread fatigue life is 0.5~0.9, the ε interval corresponding to the optimal sidewall fatigue life is 0.5~1, and the ε interval corresponding to the optimal tire bead fatigue life is 0.6~0.9.

[0013] Furthermore, under high pressure and low load conditions, the optimal value of ε corresponding to the maximum tread fatigue life is 0.72, the optimal value of ε corresponding to the maximum sidewall fatigue life is 0.62, and the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.62.

[0014] Further, the tread part includes tread rubber, shoulder rubber and belt layer, the sidewall part includes sidewall rubber, inner liner rubber, sidewall filling rubber and carcass, and the bead part includes wire ring, steel ladle, wire ring rubber, apex rubber and bead protection rubber; When the operating condition type is standard pressure and standard load, and the horizontal axis position ε is selected as 0.62, the tire damage point is located near the end point of the 0-degree belt layer on the tread.

[0015] In a second aspect, the present application provides a motor vehicle, using any of the tires with optimized horizontal axis position described above.

[0016] Compared with the prior art, the tire with optimized horizontal axis position and the motor vehicle using the same provided by the present application, starting from the perspective of reasonable design of the horizontal axis position, obtains the better interval value or optimal value of ε corresponding to the higher interval of tire fatigue life according to the tire fatigue life data corresponding to different horizontal axis positions ε (ε=H1 / H2), so as to quickly, directly and reliably obtain tires with higher durability performance, optimize the durability performance of the tire, quickly and efficiently, and improve customer experience.

[0017] Since the horizontal axis position of the tire is the horizontal position where the maximum width of the tire section is located, and it is also the thinnest position of the tire section, that is, the position where the sidewall thickness is the smallest, the design of the horizontal axis position of the tire section can directly affect the durability of the tire under inflation and loading conditions, especially the stress characteristics of the tire shoulder and bead. Under inflation and loading conditions, the crown, bead and sidewall of the tire will expand and deform. The change of the horizontal axis position of the tire section will affect the deformation characteristics of the tire, and then affect the mechanical properties of the tire; therefore, a reasonable horizontal axis position design can effectively disperse the tire force, ensure that the tire is evenly stressed during driving, reduce the risk of damage to the shoulder and bead, thereby extending the service life of the tire and effectively improving the durability of the tire. Therefore, through the setting of a reasonably optimized horizontal axis position, a tire with better durability can be quickly, directly and reliably obtained, and the durability of the tire can be quickly, directly and reliably optimized and improved, thereby improving user experience and market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of a tire cross-section structure provided in an embodiment of the present application; Figure 2 The overall fatigue life curve diagram corresponding to different horizontal axis positions under three different working conditions provided in the embodiment of the present application; Figure 3 This is a simulation effect diagram of fatigue life data of various parts of a tire provided in an embodiment of the present application.

[0020] Reference numerals: 10-tread; 20-sidewall; 30-bead. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of 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.

[0027] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] like Figure 1As shown, the embodiment of the present application provides a tire with an optimized horizontal axis position, and a motor vehicle using the tire. The horizontal axis X of the tire divides the tire section into an upper sidewall and a lower sidewall, the vertical distance between the horizontal axis X and the tread center point M is H1, and the vertical distance between the horizontal axis X and the tire rim contact point C is H2, ε=H1 / H2, ε can represent the horizontal axis position of the tire, and the optimal value range of ε is: 0.5≤ε<1.

[0029] Compared with the prior art, the tire with optimized horizontal axis position and the motor vehicle using the same provided in the embodiments of the present application, from the perspective of reasonable design of the horizontal axis position, obtains the better interval value or optimal value of ε corresponding to the higher interval of tire fatigue life according to the tire fatigue life data corresponding to different horizontal axis positions ε (ε=H1 / H2), so as to quickly, directly and reliably obtain tires with higher durability performance, optimize the durability performance of the tire, quickly and efficiently, and improve customer experience.

[0030] Since the horizontal axis position of the tire is the horizontal position where the maximum width of the tire section is located, and it is also the thinnest position of the tire section, that is, the position where the sidewall thickness is the smallest, the design of the horizontal axis position of the tire section can directly affect the durability of the tire under inflation and loading conditions, especially the stress characteristics of the tire shoulder and bead. Under inflation and loading conditions, the crown, bead and sidewall of the tire will expand and deform. The change of the horizontal axis position of the tire section will affect the deformation characteristics of the tire, and then affect the mechanical properties of the tire; therefore, a reasonable horizontal axis position design can effectively disperse the tire force, ensure that the tire is evenly stressed during driving, reduce the risk of damage to the shoulder and bead, thereby extending the service life of the tire and effectively improving the durability of the tire. Therefore, through the setting of a reasonably optimized horizontal axis position, a tire with better durability can be quickly, directly and reliably obtained, and the durability of the tire can be quickly, directly and reliably optimized and improved, thereby improving user experience and market competitiveness.

[0031] Furthermore, according to the maximum tire pressure and maximum load that the tire can withstand, the tire operating condition type may specifically include standard pressure and standard load, standard pressure and high load, standard pressure and low load, high pressure and high load, high pressure and standard load, high pressure and low load, low pressure and high load, low pressure and standard load and low pressure and low load, etc. The tire operating condition type can be selected according to the needs of the tire application scenario.

[0032] The embodiments of the present application are specifically described by taking three typical types of standard pressure and standard load, high pressure and high load, and high pressure and low load as examples. Considering the overall fatigue life of the tire, as shown in Table 1 below, the overall fatigue life and endurance time of the tire corresponding to ε of 5 representative embodiments between ε=0.5 and 1 are listed under the three working conditions of standard pressure and standard load, high pressure and high load, and high pressure and low load. Figure 2As shown, this is the overall fatigue life curve corresponding to the horizontal axis position between ε=0.5~1 under three different working conditions: standard pressure and standard load, high pressure and high load, and high pressure and low load.

[0033] Table 1:

[0034] From Table 1 and Figure 2 It can be seen that under standard pressure and standard load conditions, when ε is 0.72, the durability performance is best; under high pressure and high load conditions, when ε is 0.72, the durability performance is best; under high pressure and low load conditions, when ε is 0.72, the durability performance is best.

[0035] In summary, that is to say, under the three working conditions of standard pressure and standard load, high pressure and high load, and high pressure and low load, the durability performance is best when ε is 0.72. Therefore, considering the overall fatigue life of the tire under the three working conditions of standard pressure and standard load, high pressure and high load, and high pressure and low load, the optimal value of ε is 0.72.

[0036] A further embodiment is that Figure 1 As shown, the parts of the tire include the tread 10, the sidewall 20 and the bead 30. After selecting the tire operating condition type, the preferred value range or optimal value of ε can be further refined according to the preference priority requirements for fatigue life of different parts of the tire (i.e., the tread 10, the sidewall 20 and the bead 30), so as to determine the preferred value range or optimal value of ε that is more in line with the actual needs of customers or application scenarios, further improve user experience and ensure optimized tire durability, so as to ensure both the tire durability of the preference priority parts and the overall durability of the tire.

[0037] Generally speaking, customers or application scenarios with different requirements for the three tire parts: tread 10, sidewall 20 and bead 30 are: roads with high requirements for tire tread durability are generally: such as uneven roads, urban buffer zones, etc.; roads with high requirements for tire sidewall durability are generally: such as bumpy roads, roads with frequent braking, and the sidewall may be bent and squeezed; roads with high requirements for tire bead durability are generally: such as rugged mountain roads, industrial roads, etc.

[0038] Table 2 below lists the tread fatigue life, sidewall fatigue life and bead fatigue life corresponding to 5 representative embodiments with ε between 0.5 and 1 under three working conditions: standard pressure and standard load, high pressure and high load, and high pressure and low load. Figure 2 ) is displayed.

[0039] Table 2:

[0040] It can be seen from Table 1 that under standard pressure and load conditions, the ε range corresponding to the optimal tread fatigue life is 0.5~0.9, among which the optimal ε value corresponding to the maximum tread fatigue life is 0.72; The ε range corresponding to the optimal sidewall fatigue life is 0.6~0.9, among which the optimal ε value corresponding to the maximum sidewall fatigue life is 0.85; The ε interval corresponding to the optimal tire bead fatigue life is 0.5~1, among which the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.95.

[0041] It can also be seen that under high pressure and high load conditions, the ε interval corresponding to the optimal tread fatigue life is 0.7~1, among which the optimal ε value corresponding to the maximum tread fatigue life is 0.72; The ε range corresponding to the optimal sidewall fatigue life is 0.6~1, among which the optimal ε value corresponding to the maximum sidewall fatigue life is 0.85; The ε range corresponding to the optimal tire bead fatigue life is 0.5~0.9, among which the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.62.

[0042] It can also be seen that under high pressure and low load conditions, the ε range corresponding to the optimal tread fatigue life is 0.5~0.9, among which the optimal ε value corresponding to the maximum tread fatigue life is 0.72; The ε range corresponding to the optimal sidewall fatigue life is 0.5~1, among which the optimal ε value corresponding to the maximum sidewall fatigue life is 0.62; The ε range corresponding to the optimal tire bead fatigue life is 0.6~0.9, among which the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.62.

[0043] A further embodiment is that the tread 10 may specifically include tread rubber, shoulder pad rubber and belt layer, the sidewall 20 may specifically include sidewall rubber, inner liner rubber, sidewall filling rubber and tire body, and the bead 30 may specifically include wire ring, steel ladle, wire ring rubber bag, apex rubber (including upper apex rubber and lower apex rubber) and sub-mouth protective rubber.

[0044] The simulation effect diagram (such as Figure 3 ) can be used to intuitively and finely understand which specific position of the tire damage point is the tread 10, the sidewall 20 or the bead 30. This simulation effect diagram can display the fatigue life distribution at each position on the overall tire model in different colors, so that the tire damage point position corresponding to the lowest fatigue life value can be intuitively found.

[0045] A specific embodiment is as follows Figure 3As shown in the figure, under standard pressure and load conditions, when the horizontal axis position ε is selected as 0.62, the fatigue life data simulation effect diagram of each part of the tire is obtained. It can be seen intuitively that the tire damage point is near the end point of the 0-degree belt layer of the tread 10, near the bottom of the shoulder pattern groove. Similarly, under high pressure and high load conditions, the tire damage point may appear near the carcass end point of the bead 30.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A tire with optimized horizontal axis position, characterized in that: The horizontal axis X of the tire divides the tire section into an upper sidewall and a lower sidewall. The vertical distance between the horizontal axis X and the center point M of the tread is H1, and the vertical distance between the horizontal axis X and the tire rim contact point C is H2. ε=H1 / H2 represents the horizontal axis position, and the optimal value range of ε is: 0.5≤ε<1.

2. The tire with optimized horizontal axis position according to claim 1, characterized in that: According to the maximum tire pressure and maximum load that the tire can withstand, the tire operating conditions include at least standard pressure and standard load, high pressure and high load, and high pressure and low load; Considering the overall fatigue life of the tire, the optimal value of ε under the standard pressure and standard load, the high pressure and high load, and the high pressure and low load conditions is 0.

72.

3. The tire with optimized horizontal axis position according to claim 1 or 2, characterized in that: The tire parts include the tread, the sidewall and the bead. According to the preference priority requirements for fatigue life of different parts of the tire, a better value range or an optimal value of ε is selected accordingly.

4. The tire with optimized horizontal axis position according to claim 3, characterized in that: Under standard pressure and load conditions, the ε range corresponding to the optimal tread fatigue life is 0.5~0.9, the ε range corresponding to the optimal sidewall fatigue life is 0.6~0.9, and the ε range corresponding to the optimal tire bead fatigue life is 0.5~1.

5. The tire with optimized horizontal axis position according to claim 4, characterized in that: Under standard pressure and load conditions, the optimal value of ε corresponding to the maximum tread fatigue life is 0.72, the optimal value of ε corresponding to the maximum sidewall fatigue life is 0.85, and the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.

95.

6. The tire with optimized horizontal axis position according to claim 3, characterized in that: Under high pressure and high load conditions, the ε range corresponding to the optimal tread fatigue life is 0.7~1, the ε range corresponding to the optimal sidewall fatigue life is 0.6~1, and the ε range corresponding to the optimal tire bead fatigue life is 0.5~0.

9.

7. The tire with optimized horizontal axis position according to claim 6, characterized in that: Under high pressure and high load conditions, the optimal value of ε corresponding to the maximum tread fatigue life is 0.72, the optimal value of ε corresponding to the maximum sidewall fatigue life is 0.85, and the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.

62.

8. The tire with optimized horizontal axis position according to claim 3, characterized in that: Under high pressure and low load conditions, the ε range corresponding to the optimal tread fatigue life is 0.5~0.9, the ε range corresponding to the optimal sidewall fatigue life is 0.5~1, and the ε range corresponding to the optimal bead fatigue life is 0.6~0.

9.

9. The tire with optimized horizontal axis position according to claim 8, characterized in that: Under high pressure and low load conditions, the optimal value of ε corresponding to the maximum tread fatigue life is 0.72, the optimal value of ε corresponding to the maximum sidewall fatigue life is 0.62, and the horizontal axis position ε corresponding to the maximum tire bead fatigue life is 0.

62.

10. The tire with optimized horizontal axis position according to claim 3, characterized in that: The tread part includes tread rubber, shoulder rubber and belt layer, the sidewall part includes sidewall rubber, inner liner rubber, sidewall filling rubber and carcass, and the bead part includes wire ring, steel ladle, wire ring rubber, apex rubber and bead protection rubber; When the operating condition type is standard pressure and standard load, and the horizontal axis position ε is selected as 0.62, the tire damage point is located near the end point of the 0-degree belt layer on the tread.

11. A motor vehicle, characterized in that: A tire with an optimized horizontal axis position as claimed in any one of claims 1 to 10.

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