Pneumatic tire with asymmetric structure
By designing an asymmetric pneumatic tire, utilizing asymmetric parameters such as steel belt width, cord roll height and tread grooves, and combining them with reinforced materials, the problems of insufficient tire grip and anti-skid performance are solved, achieving high performance and durability under different load conditions.
Patent Information
- Application Number
- CN202423051522.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing tires have room for improvement in grip and anti-skid performance, and their service life and durability are insufficient under different load conditions.
An asymmetric pneumatic tire is designed. By setting asymmetric parameters such as steel belt width, cord roll height, reinforcement layer width, and tread grooves between the left and right tire halves, and combining them with reinforced materials such as aramid or steel cord layers, the right tire half is made softer than the left tire half to adapt to load changes and enhance anti-skid and drainage performance.
It improves the tire's grip and anti-skid performance under high load and high speed, extends its service life and reduces maintenance costs.
Smart Images
Figure CN223420416U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tires, and in particular relates to a pneumatic tire with an asymmetric structure. Background Art
[0002] With economic development and the continuous improvement of people's living standards, people's demand for vehicles is also increasing. People's demands for vehicle safety, handling, durability and other performance are also increasing. The requirements for tire safety, handling, durability and other performance are also constantly increasing. Current tires still have much room for improvement in grip and wet skid resistance. Summary of the Invention
[0003] The present invention aims to overcome the shortcomings of the prior art by providing an asymmetric pneumatic tire. This pneumatic tire exhibits excellent grip and anti-skid properties under high loads and high speeds, improving tire performance in various driving conditions while also extending its service life and reducing maintenance costs.
[0004] In order to achieve the above technical objectives, the technical solution adopted by the embodiment of the present utility model is:
[0005] A pneumatic tire with an asymmetric structure, comprising a left tire half and a right tire half located on either side of a central axis, wherein a first steel belt width A1 of the left tire half is smaller than a first steel belt width A2 of the right tire half, a second steel belt width B1 of the left tire half is smaller than a second steel belt width B2 of the right tire half, and A1 / A2=B1 / B2;
[0006] The cord roll-up distance H1 of the left tire half is greater than the sidewall height SH1 below the horizontal axis of the pneumatic tire section and greater than the cord roll-up distance H2 of the right tire half, and the difference between H1, SH1 and H2 is greater than 5 mm;
[0007] The cord reinforcement layer width SP1 of the left tire half is greater than the cord reinforcement layer width SP2 of the right tire half, and the triangular height BF1 of the left tire half is greater than the triangular height BF2 of the right tire half.
[0008] Furthermore, the running width TW1 of the left half tire is smaller than the running width TW2 of the right half tire, and the running width TW of the pneumatic tire is TW= TW1+ TW2;
[0009] The first section crown curvature radius R of the left half tire 11 Smaller than the first section crown curvature radius R of the right half tire 12 , and R 11 / R 12 =TW1 / TW2= A1 / A2;
[0010] The tread drop P1 of the left half tire is smaller than the tread drop P2 of the right half tire, and the first main groove width G1 and the second main groove width G2 of the left half tire are not equal to the third main groove width G3 and the fourth main groove width G4 of the right half tire;
[0011] The distance S1 between the first main groove of the left half tire and the central axis is greater than the distance S4 between the fourth main groove of the right half tire and the central axis; the distance S2 between the second main groove of the left half tire and the central axis is greater than the distance S3 between the third main groove of the right half tire and the central axis.
[0012] Furthermore, A1=(0.96﹣0.98)×A2, B1=(0.96﹣0.98)×B2; H1=(1.14-1.18)×SH1, H2=(0.82-0.86)×SH1, BF2=(0.68-0.73)×BF1, the break difference between SP1 and BF1 is 5-7, and the break difference between SP2 and BF2 is 5-7.
[0013] Furthermore, TW1=(0.96﹣0.98)×TW2, P1=(0.85-0.87)×P2.
[0014] Furthermore, the material of the cord reinforcement layer of the left tire half is a reinforced material including aramid or steel cord layer.
[0015] The beneficial effects of the technical solution provided by the embodiment of the utility model are:
[0016] 1. Asymmetric Structure: This pneumatic tire utilizes an asymmetric tire profile or internal structure to achieve a softer right tire half than the left, compensating for negative camber. Specifically, the material of the right tire half is softer than the left to accommodate varying load conditions and reduce tire deformation and damage caused by uneven loading.
[0017] 2. Asymmetric tread groove: Combining the difference in shoulder drop and the design of asymmetric tread groove, it improves anti-skid performance and drainage performance.
[0018] 3. The tire sidewall will use reinforced materials such as aramid or steel cord layers to improve its strength and durability. These materials can effectively withstand the pressure caused by high loads and high-speed driving. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural diagram of an asymmetric pneumatic tire in an embodiment of the present utility model.
[0020] Explanation of the accompanying figures: 1-left half tire; 2-right half tire. DETAILED DESCRIPTION
[0021] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "inside, outside", "up, down", "left, right", etc. are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.
[0022] 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.
[0023] Example 1
[0024] like Figure 1 As shown, an asymmetric pneumatic tire includes a left tire half 1 and a right tire half 2 located on either side of a central axis. The first steel belt width A1 of the left tire half 1 is smaller than the first steel belt width A2 of the right tire half 2. The second steel belt width B1 of the left tire half 1 is smaller than the second steel belt width B2 of the right tire half 2, and A1 / A2=B1 / B2.
[0025] The cord roll-up distance H1 of the left tire half 1 is greater than the sidewall height SH1 below the horizontal axis of the inflated tire section and is greater than the cord roll-up distance H2 of the right tire half 2, that is, H1>SH1>H2, and the difference between H1, SH1 and H2 is greater than 5 mm;
[0026] The cord reinforcement layer width SP1 of the left tire half 1 is greater than the cord reinforcement layer width SP2 of the right tire half 2 , and the triangular height BF1 of the left tire half 1 is greater than the triangular height BF2 of the right tire half 2 .
[0027] The running width TW1 of the left half tire 1 is smaller than the running width TW2 of the right half tire 2, and the running width TW of the pneumatic tire is TW = TW1 + TW2;
[0028] The first section of the crown curvature radius R of the left half tire 1 11 Smaller than the first section crown curvature radius R of the right half tire 2 12 , and R 11 / R 12 =TW1 / TW2= A1 / A2;
[0029] The tread drop P1 of the left half tire 1 is smaller than the tread drop P2 of the right half tire 2. The first main groove width G1 and the second main groove width G2 of the left half tire 1 are not equal to the third main groove width G3 and the fourth main groove width G4 of the right half tire 2.
[0030] The distance S1 between the first main groove of the left half tire 1 and the central axis is greater than the distance S4 between the fourth main groove of the right half tire 2 and the central axis; the distance S2 between the second main groove of the left half tire 1 and the central axis is greater than the distance S3 between the third main groove of the right half tire 2 and the central axis.
[0031] A1=(0.96﹣0.98)×A2, B1=(0.96﹣0.98)×B2; H1=(1.14-1.18)×SH1, H2=(0.82-0.86)×SH1, BF2=(0.68-0.73)×BF1, the difference between SP1 and BF1 is 5-7, and the difference between SP2 and BF2 is 5-7.
[0032] TW1 = (0.96 - 0.98) × TW2, P1 = (0.85 - 0.87) × P2. In one embodiment, TW1 = 92.6 mm, TW2 = 95.6 mm.
[0033] The tire's ply reinforcement layer, including reinforced materials such as aramid or steel cord, provides additional support for increased strength and durability. This structural design ensures consistent tire performance under varying load conditions. These materials not only allow the tire to continue operating under reduced pressure for a period of time, but also effectively withstand the stresses of high loads and high speeds.
[0034] The asymmetric pneumatic tire of this invention features different reinforcement layer heights SP1 / SP2, cord roll-up distances H1 / H2, and apex heights BF1 / BF2 on the right and left tire halves. This results in a thicker left tire within the M range, making the right tire more flexible to compensate for negative camber and adapt to varying load conditions. The right and left tire halves also have different dropouts P1 and P2, running surface widths TW1 and TW2, steel belt widths A1, A2, B1, and B2, and main groove widths G1, G2, G3, and G4 on the tread. The distances S1, S2, S3, and S4 from the center of the tire are different, resulting in different groove widths and running surface areas on the left and right sides, resulting in different ground contact areas. This asymmetric design improves skid resistance and drainage performance.
[0035] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to examples, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A pneumatic tire with an asymmetric structure, characterized in that: The pneumatic tire comprises a left half tire (1) and a right half tire (2) located on both sides of a central axis, wherein the first layer steel belt width A1 of the left half tire (1) is smaller than the first layer steel belt width A2 of the right half tire (2), the second layer steel belt width B1 of the left half tire (1) is smaller than the second layer steel belt width B2 of the right half tire (2), and A1 / A2=B1 / B2; The cord roll-up distance H1 of the left half tire (1) is greater than the sidewall height SH1 below the horizontal axis of the pneumatic tire section and greater than the cord roll-up distance H2 of the right half tire (2), and the difference between H1, SH1 and H2 is greater than 5 mm; The cord reinforcement layer width SP1 of the left half tire (1) is greater than the cord reinforcement layer width SP2 of the right half tire (2), and the triangular height BF1 of the left half tire (1) is greater than the triangular height BF2 of the right half tire (2).
2. The pneumatic tire with an asymmetric structure according to claim 1, characterized in that: The running surface width TW1 of the left half tire (1) is smaller than the running surface width TW2 of the right half tire (2), and the running surface width TW of the pneumatic tire is TW= TW1+ TW2; The first section crown curvature radius R of the left half tire (1) 11 Smaller than the first section crown curvature radius R of the right half tire (2) 12 , and R 11 / R 12 =TW1 / TW2= A1 / A2; The tread drop amount P1 of the left half tire (1) is smaller than the tread drop amount P2 of the right half tire (2); the first main groove width G1 and the second main groove width G2 of the left half tire (1) are not equal to the third main groove width G3 and the fourth main groove width G4 of the right half tire (2); The distance S1 between the first main groove of the left half tire (1) and the central axis is greater than the distance S4 between the fourth main groove of the right half tire (2) and the central axis; the distance S2 between the second main groove of the left half tire (1) and the central axis is greater than the distance S3 between the third main groove of the right half tire (2) and the central axis.
3. The pneumatic tire with an asymmetric structure according to claim 1, characterized in that: A1=(0.96﹣0.98)×A2, B1=(0.96﹣0.98)×B2; H1=(1.14-1.18)×SH1, H2=(0.82-0.86)×SH1, BF2=(0.68-0.73)×BF1, the difference between SP1 and BF1 is 5-7, and the difference between SP2 and BF2 is 5-7.
4. The pneumatic tire with an asymmetric structure according to claim 2, characterized in that: TW1=(0.96-0.98)×TW2, P1=(0.85-0.87)×P2.
5. The pneumatic tire with an asymmetric structure according to claim 1, characterized in that: The material of the cord reinforcement layer of the left tire half (1) is a reinforced material including aramid or steel cord layer.