Balanced tire tread pattern
Through the symmetrically designed chamfer and groove structure of the tire tread pattern and transverse groove, the problem of sacrificing quietness and comfort in improving handling performance is solved, and better quietness and comfort are achieved and low rolling resistance performance extends tire service life.
Patent Information
- Application Number
- CN202421043677.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-05-14
AI Technical Summary
While improving dry and wet handling and braking performance, existing ultra-high performance sport tires lead to shortening of uniform wear on the tread, decreasing quietness and driving comfort, making it difficult to take into account the tread silentness, comfort and low rolling resistance of the tires. performance.
Design a balanced tire tread pattern, adopting a symmetrical design of equal width and depth of the central longitudinal groove and the side longitudinal groove, combining the chamfers and sipe grooves of the horizontal grooves to increase the joints of the horizontal grooves and a sipe groove is provided at the bottom of the transverse groove to improve drainage and heat dissipation performance, while enhancing the tread rigidity during sudden breach.
On the premise of ensuring the handling performance of dry wetlands, it significantly improves the silentness, comfort and wetland braking properties of the tires, reduces rolling resistance, extends the service life of the tires, and improves driving comfort through soft blocks and chamfered designs.
Smart Images
Figure CN222136365U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tires, in particular to a balanced tire tread pattern. Background Art
[0002] In recent years, the research and development of ultra-high performance sports tires has been very enthusiastic. Ultra-high performance sports tires pay more attention to the dry and wet handling and braking performance of tires. For example, the traditional asymmetric longitudinal grooves increase the rigidity of the outer tread by reducing the width of the longitudinal grooves on the outer side of the tread pattern and increasing the shoulder pattern blocks on the outer side of the pattern, thereby ensuring the excellent handling performance of the tire. However, this is at the expense of uniform wear of the tread, which will shorten the service life of the tire, and this tread pattern design will sacrifice a large part of the quietness and driving comfort of the tire. With the emergence of a large number of new energy vehicles, and people paying more attention to the practicality of family cars in daily life, they pay more attention to the safety and comfort of cars. Therefore, it is urgent to design a tire tread pattern with quietness, comfort and low rolling resistance performance. Utility Model Content
[0003] The technical problem to be solved by the utility model is: to overcome the shortcomings of the prior art and provide a balanced tire tread pattern, which can, through the symmetrical design of equal width and depth of the central longitudinal groove and the side longitudinal groove and the chamfer design of the transverse groove, more highlight the quietness, comfort, wet braking and low rolling resistance performance of the tire while ensuring the dry and wet handling of the tire.
[0004] The technical solution of the utility model is:
[0005] The tread pattern of a balanced tire comprises a symmetrically arranged central longitudinal groove and symmetrically arranged side longitudinal grooves on both sides of the central longitudinal groove, transverse grooves are arranged between the two central longitudinal grooves, between the central longitudinal groove and the adjacent side longitudinal grooves, and on the other side of the side longitudinal grooves; the tops of the two side walls of the central longitudinal groove, the side longitudinal groove, the transverse groove between the two central longitudinal grooves, and the transverse groove between the central longitudinal groove and the adjacent side longitudinal grooves are respectively provided with chamfers, and the top of one of the side walls of the transverse grooves on the other side of the two side longitudinal grooves is provided with a chamfer.
[0006] Preferably, the number of transverse groove pitches on both sides of the tire tread is 105-115% of that of a sports tire of the same specification.
[0007] Preferably, a sipe groove is provided at the bottom of the transverse groove between the two central longitudinal grooves.
[0008] Preferably, the sipe groove is wide at the top and bottom and narrow in the middle.
[0009] Preferably, the lower width of the sipe groove is 2-3 times the middle width.
[0010] Preferably, both sides of the transverse grooves between the two central longitudinal grooves are connected to the central longitudinal grooves, both sides of the transverse grooves between the side longitudinal grooves on the inner side of the tire and the central longitudinal grooves are connected to the side longitudinal grooves and the central longitudinal grooves, only one side of the transverse grooves between the side longitudinal grooves on the outer side of the tire and the central longitudinal grooves is connected to the side longitudinal grooves or the central longitudinal grooves, and the transverse grooves on the other side of the side longitudinal grooves are connected to the side longitudinal grooves.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The balanced tire tread pattern of the utility model can highlight the quietness, comfort, wet braking performance and low rolling resistance of the tire while ensuring the tire's dry and wet handling performance through the symmetrical design of equal width and depth of the central longitudinal groove and the side longitudinal groove and the chamfer design of the transverse groove.
[0013] 2. The utility model increases the number of transverse grooves on both sides of the tire tread by designing the pitch number of transverse grooves to be 105-115% of that of sports tires of the same specification, making the pattern blocks softer and thus increasing the driving comfort of the tire.
[0014] 3. The utility model provides sipe grooves at the bottom of the transverse grooves. When the vehicle is running normally, the sipe grooves are in an open state, which is convenient for heat dissipation and drainage of the tire. When the vehicle brakes suddenly, the two side walls of the middle part of the sipe grooves are squeezed and closed together, thereby enhancing the tread rigidity and ensuring the handling and low rolling resistance performance of the tire. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a structural schematic diagram of the balanced tire tread pattern. In the figure, the left side is the inner side of the tire, and the right side is the outer side of the tire.
[0016] Figure 2 yes Figure 1 Section view at AA.
[0017] Figure 3 yes Figure 1 Sectional view at BB.
[0018] Figure 4 yes Figure 1 Cross-sectional view at CC.
[0019] Figure 5yes Figure 1 Sectional view at DD.
[0020] Figure 6 This is a test picture of the cushion experiment of the Pilot sport 4S tire.
[0021] Figure 7 The present invention is a test diagram of a cushion experiment of a tire using the tread pattern of the present invention.
[0022] In the figure, 1. central longitudinal groove; 2. side longitudinal groove; 3. transverse groove; 4. chamfer; 5. sipe groove. DETAILED DESCRIPTION
[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.
[0024] Example 1
[0025] like Figure 1 As shown, this embodiment provides a balanced tire tread pattern, including a symmetrically arranged central longitudinal groove 1 and symmetrically arranged side longitudinal grooves 2 on both sides of the central longitudinal groove 1. The two central longitudinal grooves 1 are equal in width and depth, and the two side longitudinal grooves 2 are equal in width and depth. Under the premise that the tire does not experience abnormal wear during use, the longitudinal grooves are designed to achieve a reasonable distribution of pattern blocks, thereby balancing the braking, handling, rolling resistance and noise performance of the tire. At the same time, Figure 1 As shown, transverse grooves 3 are arranged between two central longitudinal grooves 1, between the central longitudinal groove 1 and the adjacent side longitudinal groove 2, and on the other side of the side longitudinal groove 2; Figure 1-3 As shown, the central longitudinal groove 1, the side longitudinal groove 2, the transverse groove 3 between the two central longitudinal grooves 1, and the two side wall tops of the transverse groove 3 between the central longitudinal groove 1 and the adjacent side longitudinal groove 2 are respectively provided with chamfers 4, as shown in FIG. Figure 4 As shown, a chamfer 4 is provided on the top of one of the side walls of the transverse groove 3 on the other side of the two side longitudinal grooves 2. On the one hand, such a chamfer 4 design can not only meet the drainage of the tread pattern, but also reduce the movement deformation of the pattern block when it touches the ground, thereby increasing the actual ground contact area of the pattern block and ensuring the excellent braking performance and handling performance of the tire on dry and wet ground; on the other hand, such a chamfer 4 design makes the transverse groove 3 trumpet-shaped, which can reduce the width of the lower part of the tread transverse groove 3, which is convenient for drainage, and can also improve the rigidity of the tire, reduce the tire noise, and improve the driving comfort performance.
[0026] like Figure 1As shown, the transverse grooves 3 between the two central longitudinal grooves 1 are connected to the central longitudinal grooves 1 on both sides, the transverse grooves 3 between the side longitudinal grooves 2 and the central longitudinal grooves 1 on the inner side of the tire are connected to the side longitudinal grooves 2 and the central longitudinal grooves 1 on both sides, the transverse grooves 3 between the side longitudinal grooves 2 and the central longitudinal grooves 1 on the outer side of the tire are connected to the side longitudinal grooves 2 or the central longitudinal grooves 1 on only one side, and the transverse grooves 3 on the other side of the side longitudinal grooves 2 are connected to the side longitudinal grooves 2. This design allows the transverse grooves 3 on the inner side of the tire tread to be connected, which is convenient for drainage, while the transverse grooves 3 on the outer side are not connected, which can ensure the rigidity of the tire tread.
[0027] In addition, in this embodiment, the number of transverse grooves 3 pitches on both sides of the tire tread is 105-115% times that of sports tires of the same specification. Among them, the transverse groove 3 pitch refers to the spacing between two adjacent transverse grooves 3 on the side of the tread in the circumferential direction of the tire, so the number of transverse groove 3 pitches is the number of such spacings. For example, the number of transverse grooves 3 pitches on both sides of a sports tire of 215 / 50R17 specification is 68, while the number of transverse grooves 3 pitches on both sides of the tire tread of this embodiment can be designed to be 72, which is 105.88% of the sports tire of the same specification. This design can increase the number of transverse grooves 3 on both sides of the tire tread, making the pattern blocks softer, thereby increasing the comfort of tire driving.
[0028] The interior noise of the 215 / 45R17 tire with the tread pattern of this embodiment, compared with the same specification tire of Pilot sport 4S, at low and high speeds is shown in Table 1:
[0029] Table 1
[0030]
[0031] It can be seen from Table 1 that the indoor noise of the tire of this embodiment is reduced at both low and high speeds. Figure 6-7 As shown, a cushion test was conducted on the two tires, that is, the vibration value generated by the tires was detected when the vehicle passed through multiple cushions continuously. From the comparison of the figures, it can be seen that the maximum vibration value of the tire using the tread pattern of this embodiment is 72.5% of that of the Pilot sport 4S tire, and the driving comfort is improved.
[0032] Example 2
[0033] The increase in the pitch of the transverse grooves 3 will inevitably reduce the rigidity of the tread pattern blocks, which is not conducive to the dry and wet handling of the tire. Therefore, in order to ensure the dry and wet handling of the tire, on the basis of Example 1, Figure 1 , 5As shown, a sipe groove 5 is provided at the bottom of the transverse groove 3 between the two central longitudinal grooves 1, and one side wall of the sipe groove 5 is a vertical straight line, and the other side wall is designed to be curved, so that the sipe groove 5 is wide at the top and bottom and narrow in the middle, and the lower width L is 2-3 times the middle width L'. With this design of the sipe groove 5, when the vehicle is driving normally, the middle side walls of the sipe groove 5 are separated, that is, the sipe groove 5 is in an open state, which is convenient for heat dissipation and drainage of the tire; when the vehicle brakes suddenly, the middle side walls of the sipe groove 5 are squeezed and closed together, thereby enhancing the tread rigidity and ensuring the handling and low rolling resistance performance of the tire.
Claims
1. Balanced tire tread pattern, characterized in that: The invention comprises a symmetrically arranged central longitudinal groove (1) and symmetrically arranged side longitudinal grooves (2) on both sides of the central longitudinal groove (1); transverse grooves (3) are arranged between the two central longitudinal grooves (1), between the central longitudinal groove (1) and the adjacent side longitudinal groove (2), and on the other side of the side longitudinal groove (2); chamfers (4) are arranged on the tops of the two side walls of the central longitudinal groove (1), the side longitudinal groove (2), the transverse groove (3) between the two central longitudinal grooves (1), and the transverse groove (3) between the central longitudinal groove (1) and the adjacent side longitudinal groove (2); and a chamfer (4) is arranged on the tops of one of the side walls of the transverse grooves (3) on the other side of the two side longitudinal grooves (2).
2. The balanced tire tread pattern according to claim 1, characterized in that: The number of pitches of the transverse grooves (3) on both sides of the tire tread is 105-115% of that of a sports tire of the same specification.
3. The balanced tire tread pattern according to claim 1, characterized in that: A sipe groove (5) is arranged at the bottom of the transverse groove (3) between the two central longitudinal grooves (1).
4. The balanced tire tread pattern according to claim 3, characterized in that: The sipe groove (5) is wide at the top and bottom and narrow in the middle.
5. The balanced tire tread pattern according to claim 4, characterized in that: The lower width of the sipe groove (5) is 2-3 times the middle width.
6. The balanced tire tread pattern according to claim 1, characterized in that: The transverse grooves (3) between the two central longitudinal grooves (1) are connected to the central longitudinal grooves (1) on both sides, the transverse grooves (3) between the side longitudinal grooves (2) and the central longitudinal grooves (1) on the inner side of the tire are connected to the side longitudinal grooves (2) and the central longitudinal grooves (1) on both sides, the transverse grooves (3) between the side longitudinal grooves (2) and the central longitudinal grooves (1) on the outer side of the tire are connected to the side longitudinal grooves (2) or the central longitudinal grooves (1) on only one side, and the transverse grooves (3) on the other side of the side longitudinal grooves (2) are connected to the side longitudinal grooves (2).