Safe and environment-friendly summer UHP tire
By optimizing the tread structure design, including rib-like structure and gradually eliminating cutting grooves, the safety and handling stability of UHP tires in new energy vehicles in summer are solved, grip and cornering performance are improved, and rolling resistance is reduced.
Patent Information
- Application Number
- CN202510720946.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-08-15
AI Technical Summary
Existing summer UHP tires have problems with insufficient safety and handling stability in new energy vehicles, especially in wetland road conditions, which have poor grip and cornering performance.
The optimized tread structure design is adopted, including rib-like structures and circumferential grooves in the circumferential direction, combined with the gradual-depleting cutting structure and anti-slip steering connection keys, increasing the rigidity of the block, optimizing the arrangement of longitudinal and transverse grooves, and improving wetland grip and cornering stability.
It improves the tire's grip performance and cornering handling stability, reduces rolling resistance, reduces abnormal tread wear and noise, and meets the instantaneous torque needs of new energy vehicles.
Smart Images
Figure CN120481492A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of tires, in particular to a safe and environmentally friendly summer UHP tire. Background Art
[0002] With the continuous development of the new energy market in the automotive industry, vehicle safety, comfort, and controllability have become the guarantee of high-quality driving that consumers pursue. At the same time, to ensure the driving range, reducing rolling resistance has become a trend. This also places higher demands on the tire tread pattern structure and tire performance:
[0003] Higher handling stability: New energy vehicles rely on electric motors for power and have a rapid power response, placing higher demands on tire safety and handling stability.
[0004] Higher wet and slippery requirements: Targeting the European market, higher requirements are placed on wet road handling and grip, as well as higher wet safety performance.
[0005] Based on this, a safe and environmentally friendly summer UHP tire is now provided, which can eliminate the disadvantages of the existing devices. Summary of the Invention
[0006] The purpose of the present invention is to provide a safe and environmentally friendly summer UHP tire, which solves the problem of inconvenience in use in the prior art.
[0007] To achieve the above object, the present invention provides the following technical solutions:
[0008] 2. A safe and environmentally friendly summer UHP tire, comprising a tread structure, wherein the tread structure comprises a first rib structure, a second rib structure, a third rib structure, a fourth rib structure, a fifth rib structure (14) in a circumferential direction and a first circumferential groove, a second circumferential groove, a third circumferential groove, and a fourth circumferential groove;
[0009] The first rib structure and the fifth rib structure are located on the tire shoulder; the second rib structure), the third rib structure and the fourth circumferential groove are located on the outer side of the tire;
[0010] The first rib structure is provided with a first transverse groove to divide it into a first pattern block; the second rib structure is provided with a first transverse sipe to divide it into a second pattern block; the third rib structure is provided with a second transverse sipe to divide it into a third pattern block; the fourth rib structure is provided with a third transverse sipe to divide it into a fourth pattern block; and the fifth rib structure is provided with a second transverse groove to divide it into a fifth pattern block.
[0011] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:
[0012] In an optional scheme: the width of the fourth circumferential groove between the fourth rib structure and the fifth rib structure is within the range of no more than 6.1 mm, and the radial depth is within the range of no more than 7.5 mm; the serrated "gradually disappearing cutting structure" of the fourth circumferential groove has a radial cutting depth within the range of no more than 2 mm, and the angle γ between its serrated shape and the tire circumference is within the range of 2 to 5°.
[0013] In an optional scheme: the first transverse groove, the second transverse groove and the second transverse sipe, the second middle transverse sipe and the third middle transverse sipe on the tire shoulder are designed with a "gradually disappearing cutting structure"; wherein the radial depth of the "gradually disappearing cutting structure" of the first transverse groove and the second transverse groove is within a range of no more than 1.5 mm; the radial depth of the "gradually disappearing cutting structure" of the second transverse sipe, the second middle transverse sipe and the third middle transverse sipe is within a range of no more than 2 mm.
[0014] In an optional solution: "anti-slip connecting keys" are provided at both ends of the second transverse sipe, the second middle transverse sipe, and the third middle transverse sipe. The length of the anti-slip connecting keys in the transverse direction of the tread is within the range of no more than 3 mm, and the depth in the radial direction of the tire is within the range of no more than 2 mm.
[0015] In an optional solution, the second transverse slit, the second middle transverse slit, and the third middle transverse slit are designed with 3D steel sheets, and the cross-section of the 3D steel sheets is wavy with a fluctuation amplitude within a range of 1.74 mm.
[0016] In an optional solution: the direction and arrangement of the lateral grooves on the tread shoulder, the offset and optimized angles of the lateral grooves on the upper and lower shoulders, the angle α of the first lateral groove is in the range of 80 to 90 degrees, and the angle β of the second lateral groove is in the range of 80 to 90 degrees, which are used to reduce noise and are related to the tire PRAT performance.
[0017] In one optional scheme: when arranging the pitches in the circumferential direction of the tread, a multi-level variable pitch arrangement is adopted; the upper shoulder area A and the lower shoulder area C adopt an arrangement method with a total pitch number of not less than 70 and a pitch type of not less than 4, and the middle pattern block area B adopts an arrangement method with a total pitch number of not less than 35 and a pitch type of not less than 6.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] 1. An optimized outer tread pattern design uses narrower longitudinal grooves to increase the contact area between the outer tread and the ground. This allows the tread blocks to interact during cornering, increasing their rigidity and improving instantaneous grip. It also effectively disperses pressure on the outer shoulder, preventing abnormal tread wear caused by excessive pressure on the outer side. This improves the tire's grip and cornering stability to cope with the instantaneous torque of new energy vehicles.
[0020] The optimized tread groove shape includes four longitudinal grooves, two transverse grooves on the tire shoulders, and several transverse sipes in the middle of the tire. The serrated "gradually disappearing cutting structure" of the longitudinal grooves can effectively cut water film and increase the friction between the outer side of the tire and the ground. The "gradually disappearing cutting structure" of the transverse grooves and transverse sipes can effectively cut water film on the road surface and improve the overall wet grip of the tread. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a front view of the tire tread of the present invention.
[0022] Figure 2 It is a schematic diagram of the gradual cutting structure of the present invention.
[0023] Figure 3 This is a cross-sectional view of the gradually disappearing cutting structure of the present invention.
[0024] Figure 4 This is a cross-sectional view of the anti-slip connection key structure of the present invention.
[0025] Figure 5 This is a cross-sectional view of the 3D steel sheet structure of the present invention.
[0026] Figure 6 This is an explanatory diagram of the pitch arrangement and shoulder groove of the present invention. DETAILED DESCRIPTION
[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.
[0028] Figures 1-6 As shown, a safe and environmentally friendly summer UHP tire includes a tread structure, wherein the tread structure includes a first rib structure 10, a second rib structure 11, a third rib structure 12, a fourth rib structure 13, a fifth rib structure 14 and a first circumferential groove 1, a second circumferential groove 2, a third circumferential groove 3, and a fourth circumferential groove 4 in the circumferential direction;
[0029] The first rib structure 10 and the fifth rib structure 14 are located at the tire shoulder; the second rib structure 11, the third rib structure 12, and the fourth rib structure 13 are located in the middle of the tire; the first circumferential groove 1 is located on the inner side of the tire; and the fourth circumferential groove 4 is located on the outer side of the tire.
[0030] The first rib structure 10 is provided with a first transverse groove 15 to divide it into a first pattern block 5; the second rib structure 11 is provided with a first transverse sipe 16 to divide it into a second pattern block 6; the third rib structure 12 is provided with a second transverse sipe 17 to divide it into a third pattern block 7; the fourth rib structure 13 is provided with a third transverse sipe 18 to divide it into a fourth pattern block 8; the fifth rib structure 14 is provided with a second transverse groove 20 to divide it into a fifth pattern block 9.
[0031] The width of the fourth circumferential groove 4 between the fourth rib-like structure 13 and the fifth rib-like structure 14 is within the range of not more than 6.1 mm, and the radial depth is within the range of not more than 7.5 mm; the serrated "gradually disappearing cutting structure" ⑥ of the fourth circumferential groove 4 has a radial cutting depth within the range of not more than 2 mm, and the angle γ between its serrated shape and the tire circumference is within the range of 2 to 5°.
[0032] The first transverse groove 15, the second transverse groove 20 and the first central transverse sipe 17, the second central transverse sipe 18 and the third central transverse sipe 19 on the tire shoulder are designed with "gradually disappearing cutting structures" ①-⑤; wherein the radial depths of the "gradually disappearing cutting structures" ① and ④ of the first transverse groove 15 and the second transverse groove 20 are within a range of no more than 1.5 mm; the radial depths of the "gradually disappearing cutting structures" ②, ③ and ⑤ of the second transverse sipe 17, the second central transverse sipe 18 and the third central transverse sipe 19 of the tire are within a range of no more than 2 mm.
[0033] "Anti-slip connecting keys" are provided at both ends of the second transverse sipe 17, the second middle transverse sipe 18 and the third middle transverse sipe 19. The length of the connecting keys in the transverse direction of the tread is within the range of no more than 3 mm, and the depth in the radial direction of the tire is within the range of no more than 2 mm.
[0034] The first middle transverse sipe 17 , the second middle transverse sipe 18 , and the third middle transverse sipe 19 are designed with 3D steel sheets, and the cross-section of the 3D steel sheets is wavy with a fluctuation amplitude within the range of 1.74 mm.
[0035] The direction and arrangement of the tread shoulder transverse grooves, the offset and optimized angles of the upper and lower shoulder transverse grooves, the angle α of the first transverse groove 15 ranges from 80 to 90 degrees, and the angle β of the lower shoulder transverse groove 20 ranges from 80 to 90 degrees, are used to reduce noise and are related to the tire's PRAT performance.
[0036] When arranging the pitches in the circumferential direction of the tread, a multi-level variable pitch arrangement is adopted; the upper shoulder area A and the lower shoulder area C adopt an arrangement method with a total pitch number of not less than 70 and a pitch type of not less than 4 types, and the middle pattern block area B adopts an arrangement method with a total pitch number of not less than 35 and a pitch type of not less than 6 types.
[0037] The optimized outer tread pattern design uses narrower longitudinal grooves to increase the contact area between the tread and the ground in the outer area. This allows the tread blocks to interact when the vehicle turns. This not only increases the rigidity of the tread blocks and improves instantaneous grip, but also effectively disperses the pressure on the outer shoulder, preventing abnormal tread wear caused by excessive pressure on the outer side. This improves the tire's grip and cornering stability to cope with the instantaneous torque of new energy vehicles.
[0038] The tread features an optimized groove shape, with four longitudinal grooves, two transverse grooves on the tire shoulders, and several transverse sipes in the center. The longitudinal grooves' zigzag, "gradually disappearing" structure effectively cuts through water film, increasing friction between the tire's outer side and the ground. The transverse grooves and transverse sipes also feature a "gradually disappearing" structure, effectively cutting through water film on the road surface and improving the overall wet grip of the tread.
[0039] The optimized profile and transverse sipes reduce the tire's overall contact area with the ground, thereby lowering rolling resistance. The transverse sipes utilize a self-locking 3D steel plate design with "anti-slip connection keys" at both ends to connect the tread blocks, effectively reducing deformation of the tread blocks and increasing the rigidity of the center rib, thereby improving rolling resistance and reducing losses and energy dissipation.
[0040] Optimized pitch arrangement: The tire circumferential pitch arrangement adopts a partitioned block variable pitch arrangement. Through simulation optimization analysis and upper and lower shoulder groove staggering and optimized angles, low tire noise is achieved.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A safe and environmentally friendly summer UHP tire, characterized by: The tread structure includes a first rib structure (10), a second rib structure (11), a third rib structure (12), a fourth rib structure (13), a fifth rib structure (14) and a first circumferential groove (1), a second circumferential groove (2), a third circumferential groove (3), and a fourth circumferential groove (4) in a circumferential direction; The first rib-like structure (10) and the fifth rib-like structure (14) are located at the tire shoulder; the second rib-like structure (11), the third rib-like structure (12), and the fourth rib-like structure (13) are located at the middle of the tire; the first circumferential groove (1) is located at the inner side of the tire; and the fourth circumferential groove (4) is located at the outer side of the tire; The first rib-like structure (10) is provided with a first transverse groove (15) to divide it into a first pattern block (5); the second rib-like structure (11) is provided with a first transverse sipe (16) to divide it into a second pattern block (6); the third rib-like structure (12) is provided with a second transverse sipe (17) to divide it into a third pattern block (7); the fourth rib-like structure (13) is provided with a third transverse sipe (18) to divide it into a fourth pattern block (8); and the fifth rib-like structure (14) is provided with a second transverse groove (20) to divide it into a fifth pattern block (9).
2. The safe and environmentally friendly summer UHP tire according to claim 1, characterized in that: The width of the fourth circumferential groove (4) between the fourth rib-like structure (13) and the fifth rib-like structure (14) is within a range of not more than 6.1 mm, and the radial depth is within a range of not more than 7.5 mm; the sawtooth-shaped "gradually disappearing cutting structure" of the fourth circumferential groove (4) has a radial cutting depth within a range of not more than 2 mm, and the angle γ between the sawtooth shape and the tire circumference is within a range of 2 to 5 degrees.
3. The safe and environmentally friendly summer UHP tire according to claim 1, characterized in that: The first transverse groove (15), the second transverse groove (20), the second transverse sipe (17), the second middle transverse sipe (18), and the third middle transverse sipe (19) on the tire shoulder are designed with a "gradually disappearing cutting structure"; wherein the radial depth of the "gradually disappearing cutting structure" of the first transverse groove (15) and the second transverse groove (20) is within a range of no more than 1.5 mm; and the radial depth of the "gradually disappearing cutting structure" of the second transverse sipe (17), the second middle transverse sipe (18), and the third middle transverse sipe (19) is within a range of no more than 2 mm.
4. The safe and environmentally friendly summer UHP tire according to claim 1, characterized in that: "Anti-slip connection keys" are provided at both ends of the second transverse sipe (17), the second middle transverse sipe (18), and the third middle transverse sipe (19). The length of the anti-slip connection keys in the transverse direction of the tread is within a range of no more than 3 mm, and the depth in the radial direction of the tire is within a range of no more than 2 mm.
5. The safe and environmentally friendly summer UHP tire according to claim 1, characterized in that: The second transverse slit (17), the second middle transverse slit (18) and the third middle transverse slit (19) are designed with 3D steel sheets, and the cross-section of the 3D steel sheets is wavy, with a fluctuation amplitude within the range of 1.74 mm.
6. The safe and environmentally friendly summer UHP tire according to claim 1, characterized in that: The direction and arrangement of the transverse grooves on the tread shoulder, the staggered and optimized angles of the transverse grooves on the upper and lower shoulders, the angle α of the first transverse groove (15) ranging from 80 to 90 degrees, and the angle β of the second transverse groove (20) ranging from 80 to 90 degrees, are used to reduce noise and are related to the tire PRAT performance.
7. The safe and environmentally friendly summer UHP tire according to claim 1, characterized in that: When arranging the pitches in the circumferential direction of the tread, a multi-level variable pitch arrangement is adopted; the upper shoulder area A and the lower shoulder area C adopt an arrangement method with a total pitch number of not less than 70 and a pitch type of not less than 4 types, and the middle pattern block area B adopts an arrangement method with a total pitch number of not less than 35 and a pitch type of not less than 6 types.