Tire pattern and RT tire
By designing specific tire patterns, including adjusting the transition surface curvature radius and interface angle of the longitudinal groove, as well as setting shoulder bumps and third horizontal grooves, the problems of stone clamping and poor drainage caused by the wide design of the existing RT tires are solved, achieving more efficient drainage and silt discharge performance, and extending the service life of the tire.
Patent Information
- Application Number
- CN202422031127.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The shoulder and middle grooves of existing RT tires are designed with wide design, which is easy to get stuck in stones and other debris, causing damage to the tire, and is not conducive to eliminating debris such as water, mud and sand.
A tire pattern is designed, including the first longitudinal groove between the middle block group and the shoulder block group. By adjusting the radius of curvature of the longitudinal transition surface and the angle of the interface, the longitudinal grooves are ensured that the left and right transition surfaces are inconsistent, and debris such as stones are squeezed and discharged, and the drainage and silt discharge performance is improved by setting shoulder bumps and third horizontal grooves.
It effectively improves the drainage and silt discharge performance of the tire, reduces the risk of tire damage, and extends the service life of the tire.
Smart Images
Figure CN222933646U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tires, and in particular relates to a tire pattern and an RT tire. Background Art
[0002] RT tire is an off-road tire suitable for professional off-road roads, also known as a hybrid all-terrain tire. RT tires are suitable for various professional non-paved road conditions, and the market demand is also increasing. Compared with ordinary tires, the groove design of the shoulders and the middle of the tread pattern of RT tires is relatively wide. Although this design can improve the passing performance of the tire on off-road roads, there are the following risks: the shoulder and middle grooves are designed to be wide, which can easily trap stones and other debris to cause tire damage and is not conducive to the removal of water, mud and other debris. Based on the above situation, the utility model provides a tire pattern and RT tire, which can improve the shortcomings of the existing technology. Utility Model Content
[0003] The utility model provides a tire pattern and an RT tire, which solves the technical problems of existing RT tires in which the shoulder and middle grooves are designed to be wide, which easily traps debris such as stones and causes tire damage and is not conducive to the removal of debris such as water and mud, and has the characteristics of improving the performance of water drainage and the removal of debris such as mud, sand and stones, and prolonging the service life of the tire.
[0004] The utility model discloses a tire pattern, comprising a middle pattern block group and shoulder pattern block groups located on both sides of the middle pattern block group, a first longitudinal groove is arranged between the shoulder pattern block group and the middle pattern block group; the first longitudinal groove is composed of a longitudinal first interface, a longitudinal first transition surface, a longitudinal second interface, a longitudinal second transition surface, and a longitudinal third interface; the longitudinal first interface is close to the outer side of the tread, the longitudinal second interface is tangently connected to the longitudinal first interface through the longitudinal first transition surface, and the longitudinal third interface is tangently connected to the longitudinal second interface through the longitudinal second transition surface; wherein the curvature radius of the longitudinal first transition surface is greater than the curvature radius of the longitudinal second transition surface, the angle between the longitudinal first interface and the tire radial direction is greater than the angle between the longitudinal second interface and the tire radial direction,
[0005] In some embodiments, the curvature radius r1 of the first longitudinal transition surface is 3mm≤r1≤15mm, the curvature radius r2 of the second longitudinal transition surface is 2mm≤r2≤14mm, and r2<r1.
[0006] In some embodiments, the angle α1 between the first longitudinal interface and the tire radial direction is 3°≤α1≤15°, the angle α2 between the second longitudinal interface and the tire radial direction is 2°≤α2≤14°, and α2<α1.
[0007] In some of these embodiments, a first transverse groove and a second transverse groove are provided in the shoulder tread block group. The first transverse groove penetrates through the shoulder tread block group and the middle tread block group, and both ends of the first transverse groove extend to the shoulders on both sides of the tread respectively. Both ends of the second transverse groove extend to the shoulder and the first longitudinal groove respectively. In the middle tread block group, a second longitudinal groove, a third longitudinal groove, and a third transverse groove are provided. Both ends of the second longitudinal groove extend to the first transverse groove and the third transverse groove respectively. Both ends of the third longitudinal groove extend to the first transverse groove and the third transverse groove respectively. Both sides of the third transverse groove extend to the first longitudinal groove.
[0008] In some of these embodiments, shoulder bumps are provided in the second transverse groove. The shoulder bumps are composed of a first shoulder interface, a first shoulder transition surface, a second shoulder interface, a second shoulder transition surface, and a third shoulder interface. The second shoulder interface is tangentially connected to the first shoulder interface through the first shoulder transition surface. The third shoulder interface is tangentially connected to the second shoulder interface through the second shoulder transition surface.
[0009] In some of these embodiments, the radial thickness from the first shoulder interface to the third shoulder interface is 3 mm - 7 mm, the axial width of the first shoulder interface is 3 mm - 5 mm, and the radius of curvature r4 of the first shoulder transition surface takes a value of 0.2 mm ≤ r4 ≤ 1.0 mm; the radius of curvature r5 of the second shoulder transition surface takes a value of 0.4 mm ≤ r5 ≤ 1.0 mm.
[0010] In some of these embodiments, the included angle α4 between the first shoulder interface and the tire radial direction takes a value of 3° ≤ α4 ≤ 5°.
[0011] In some of these embodiments, the third transverse groove is composed of a first middle interface, a first middle transition surface, and a second middle interface. Among them, the second middle interface is tangentially connected to the first middle interface through the first middle transition surface. The radius of curvature of the first middle transition surface is smaller than the radius of curvature of the second longitudinal transition surface. The included angle between the first middle interface and the tire radial direction is smaller than the included angle between the second longitudinal interface and the tire radial direction.
[0012] In some of these embodiments, the radius of curvature r3 of the first middle transition surface takes a value of 1 mm ≤ r3 ≤ 10 mm; the included angle α3 between the first middle interface and the tire radial direction takes a value of 3° ≤ α3 ≤ 12°.
[0013] On the other hand, the present utility model also discloses an RT tire, and any one of the above tire patterns is provided on the tread of the RT tire.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] (1) For the first longitudinal groove of the tire tread pattern of the present utility model, the radius of curvature of the first longitudinal transition surface is greater than that of the second longitudinal transition surface, and the angle between the first longitudinal interface and the tire radial direction is greater than the angle between the second longitudinal interface and the tire radial direction. This can ensure that the forces on the left and right transition surfaces of the longitudinal groove are inconsistent, squeezing sundries such as stones, thereby discharging the stones. Moreover, when discharging sundries such as stones, it can ensure that the stones and other sundries are discharged towards the outer side of the tread, preventing the stones from rolling back into the middle of the tread after being discharged and causing the tread to clamp the stones again. It can ensure that the rigidity of the first interface of the longitudinal groove near the outer side of the tire is greater than that of the second interface, balancing the tire force and extending the service life of the tire.
[0016] (2) In the second transverse groove located at the tire shoulder of the tire tread pattern of the present utility model, shoulder bumps are provided. By designing the radius of curvature of the shoulder bumps and the angle between the shoulder bumps and the tire radial direction, it is possible to prevent the edges of the shoulder bumps from being quickly worn by sundries such as stones, improving the rigidity of the contact part between the shoulder bumps and the tread. This is not only beneficial for discharging the stones clamped in this part but also can ensure the service life of the shoulder bumps.
[0017] (3) For the third transverse groove located in the middle of the tire tread of the present utility model, both the radius of curvature of the groove bottom and the angle between the groove wall and the tire radial direction are smaller than those of the first longitudinal groove. On the basis of ensuring the width of the middle groove, the volume of the middle groove is increased, improving the drainage and sediment discharge performance of the middle groove. Description of the Drawings
[0018] The drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0019] Figure 1 is a schematic structural diagram of the tire tread pattern provided by the embodiment of the present utility model;
[0020] Figure 2 is a schematic structural diagram of the shoulder tread block group of the tire tread pattern provided by the embodiment of the present utility model;
[0021] Figure 3 is a schematic structural diagram of the middle tread block group of the tire tread pattern provided by the embodiment of the present utility model;
[0022] Figure 4 and Figure 5 are both cross-sectional views of the first longitudinal groove of the tire tread pattern provided by the embodiment of the present utility model;
[0023] Figure 6 and Figure 7 are both cross-sectional views of the third transverse groove of the tire tread pattern provided by the embodiment of the present utility model;
[0024] Figure 8 and Figure 9 are cross-sectional views of the shoulder bump of the tire tread provided by the embodiments of the present invention;
[0025] In the drawings: 1. Shoulder tread block group; 2. Middle tread block group; 31. First longitudinal groove, 311. First longitudinal interface, 312. First longitudinal transition surface, 313. Second longitudinal interface, 314. Second longitudinal transition surface, 315. Third longitudinal interface, 32. Second longitudinal groove, 33. Third longitudinal groove; 41. First transverse groove, 42. Second transverse groove, 43. Third transverse groove, 431. First middle interface, 432. First middle transition surface, 433. Second middle interface; 5. Shoulder bump, 51. First shoulder interface, 52. First shoulder transition surface, 53. Second shoulder interface, 54. Second shoulder transition surface, 55. Third shoulder interface;
[0026] r1. Curvature radius of the first longitudinal transition surface; r2. Curvature radius of the second longitudinal transition surface; r3. Curvature radius of the first middle transition surface; r4. Curvature radius of the first shoulder transition surface;
[0027] α1. Angle between the first longitudinal interface and the tire radial direction; α2. Angle between the second longitudinal interface and the tire radial direction; α3. Angle between the first middle interface and the tire radial direction; α4. Angle between the first shoulder interface and the tire radial direction. Detailed implementation manners
[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "longitudinal", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. The term "longitudinal" refers to the direction in which the tire rolls; the term "lateral" refers to the direction perpendicular to the mid-plane of the tire.
[0030] An embodiment of the present utility model provides a tire tread pattern and an RT tire. Figure 1 It is a schematic structural diagram of the tire tread pattern according to the embodiment of the present utility model. Refer to Figures 1 - 3 As shown, the tire tread pattern at least includes: a central tread block group 2, shoulder tread block groups 1 on both sides of the central tread block group 2, multiple lateral grooves and multiple longitudinal grooves, and the shoulder tread block groups 1 on both sides are centrosymmetric. A first longitudinal groove 31 is provided between the shoulder tread block group 1 and the central tread block group 2. A first transverse groove 41 and a second transverse groove 42 are provided in the shoulder tread block group 1. The first transverse groove 41 penetrates through the shoulder tread block group 1 and the central tread block group 2, and both ends of the first transverse groove 41 extend to the shoulders on both sides of the tread pattern. Both ends of the second transverse groove 42 extend to the shoulder and the first longitudinal groove 31 respectively. A second longitudinal groove 32, a third longitudinal groove 33 and a third transverse groove 43 are provided in the central tread block group 2. Both ends of the second longitudinal groove 32 extend to the first transverse groove 41 and the third transverse groove 43 respectively. Both ends of the third longitudinal groove 33 extend to the first transverse groove 41 and the third transverse groove 43 respectively.
[0031] Refer to Figure 4 and Figure 5As shown in the figure, the first longitudinal groove 31 of the tire tread in the embodiment of the present utility model is composed of a longitudinal first interface 311, a longitudinal first transition surface 312, a longitudinal second interface 313, a longitudinal second transition surface 314, and a longitudinal third interface 315. Among them, the longitudinal first interface 311 is close to the outer side of the tread; the longitudinal second interface 313 is tangentially connected to the longitudinal first interface 311 through the longitudinal first transition surface 312; the longitudinal third interface 315 is tangentially connected to the longitudinal second interface 313 through the longitudinal second transition surface 314. Preferably, the curvature radius r1 of the longitudinal first transition surface 312 is taken as 3 mm ≤ r1 ≤ 15 mm, the curvature radius r2 of the longitudinal second transition surface 314 is taken as 2 mm ≤ r2 ≤ 14 mm, and r2 < r1, with a difference of 1 mm - 3 mm; the angle α1 between the longitudinal first interface 311 and the tire radial direction is taken as 3° ≤ α1 ≤ 15°; the angle α2 between the longitudinal second interface 313 and the tire radial direction is taken as 2° ≤ α2 ≤ 14°; and α2 < α1, with a difference of 2° - 4°. Through the above structural design of the longitudinal groove, the following advantages are achieved: when the tire is running, the middle part of the tread first contacts the road surface, and the shoulder part of the tread finally contacts the road surface, that is, the force on the longitudinal second interface 313 is earlier than the force on the longitudinal first interface 311. If the longitudinal groove clamps stones and other sundries, the above design can ensure that the forces on the left and right transition surfaces of the longitudinal groove are inconsistent, squeeze the stones and other sundries, and thus discharge the stones; when discharging the stones and other sundries, it can ensure that the stones and other sundries are discharged to the outer side of the tread, avoiding the stones rolling into the middle of the tread again after being discharged and causing the tread to clamp the stones again; the vehicle equipped with the RT tire has a large weight. When the tread contacts the road surface, the area close to the outer side of the tread is generally subject to a greater force than the area close to the center of the tread. The above design can ensure that the rigidity of the longitudinal first interface 311 close to the outer side of the tire in the longitudinal groove is greater than that of the longitudinal second interface 313, balance the tire force, and improve the service life of the tire; with the help of the centrifugal force of the tread part when the tire is running, this design is more conducive to discharging water, sediment and other sundries in the longitudinal groove.
[0032] Reference Figure 6 and Figure 7As shown in the figure, the third transverse groove 43 of the tire tread in the embodiment of the present utility model is composed of a first middle interface 431, a first middle transition surface 432, and a second middle interface 433. The first middle interface 431 and the second middle interface 433 are tangentially connected through the first middle transition surface 432. The curvature radius r3 of the first middle transition surface 432 is taken as 1 mm ≤ r3 ≤ 10 mm, and r3 < r2; the included angle α3 between the first middle interface 431 and the tire radial direction is taken as 3° ≤ α3 ≤ 12°, and α3 < α2. In order to improve the comfort of the tire during driving, the grooves near the middle of the tire tread are usually designed to be narrower, which will reduce the drainage and sediment discharge performance of the middle of the tread. Through the above structural design of the third transverse groove near the middle of the tire tread in the present utility model, on the basis of ensuring the width of the middle groove, the volume of the middle groove is increased, and the drainage and sediment discharge performance of the middle groove is improved; with the help of the centrifugal force of the tread during tire driving, it is more conducive to discharging water, sediment and other sundries in the middle groove during tire driving.
[0033] Reference Figure 8 and Figure 9 As shown in the figure, shoulder bumps 5 are arranged in the second transverse groove 42 of the tire tread in the embodiment of the present utility model, and the shoulder bumps 5 are arranged at intervals in the second transverse groove 42; the shoulder bumps 5 are composed of a first shoulder interface 51, a first shoulder transition surface 52, a second shoulder interface 53, a second shoulder transition surface 54, and a third shoulder interface 55; the first shoulder interface 51 and the second shoulder interface 53 are tangentially connected through the first shoulder transition surface 52; the second shoulder interface 53 and the third shoulder interface 55 are tangentially connected through the second shoulder transition surface 54. In a preferred embodiment, the radial thickness from the first shoulder interface 51 to the third shoulder interface 55 is 3 mm - 7 mm, and the axial width of the first shoulder interface 51 is 3 mm - 5 mm, that is, the protrusion height of the shoulder bump 5 is 3 mm - 7 mm, and the width is 3 mm - 5 mm. This structural design can ensure the overall rigidity of the shoulder bump, which is not only conducive to discharging the stones clamped in this part, but also can ensure the service life of this part. The curvature radius r4 of the first shoulder transition surface 52 is taken as 0.2 mm ≤ r4 ≤ 1.0 mm. This structural design can prevent the edge of the shoulder bump from being quickly worn by sundries such as stones; when the area where the shoulder bump is located clamps a stone, the shoulder bump is subjected to a large force. The curvature radius r5 of the second shoulder transition surface 54 is taken as 0.4 mm ≤ r5 ≤ 1.0 mm, which can improve the rigidity of the contact part between the shoulder bump and the tread, and can also ensure the service life of the shoulder bump. The included angle α4 between the first shoulder interface 51 and the tire radial direction is taken as 3° ≤ α4 ≤ 5°.
[0034] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or make equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.
Claims
1. A tire pattern, characterized in that: It includes a middle pattern block group and shoulder pattern block groups located on both sides of the middle pattern block group, and a first longitudinal groove is arranged between the shoulder pattern block group and the middle pattern block group; the first longitudinal groove is composed of a longitudinal first interface, a longitudinal first transition surface, a longitudinal second interface, a longitudinal second transition surface, and a longitudinal third interface; the longitudinal first interface is close to the outer side of the tread, the longitudinal second interface is tangentially connected to the longitudinal first interface through the longitudinal first transition surface, and the longitudinal third interface is tangentially connected to the longitudinal second interface through the longitudinal second transition surface; wherein the curvature radius of the longitudinal first transition surface is greater than the curvature radius of the longitudinal second transition surface, and the angle between the longitudinal first interface and the tire radial direction is greater than the angle between the longitudinal second interface and the tire radial direction.
2. The tire pattern according to claim 1, characterized in that: The curvature radius r1 of the first longitudinal transition surface is 3mm≤r1≤15mm, the curvature radius r2 of the second longitudinal transition surface is 2mm≤r2≤14mm, and r2<r1.
3. The tire pattern according to claim 1, characterized in that: The angle α1 between the first longitudinal interface and the tire radial direction is 3°≤α1≤15°, the angle α2 between the second longitudinal interface and the tire radial direction is 2°≤α2≤14°, and α2<α1.
4. The tire pattern according to claim 1, characterized in that: The first transverse groove and the second transverse groove are arranged in the shoulder pattern block group, the first transverse groove runs through the shoulder pattern block group and the middle pattern block group, and the two ends of the first transverse groove extend to the shoulders on both sides of the pattern respectively, and the two ends of the second transverse groove extend to the shoulders and the first longitudinal groove respectively; the second longitudinal groove, the third longitudinal groove and the third transverse groove are arranged in the middle pattern block group, the two ends of the second longitudinal groove extend to the first transverse groove and the third transverse groove respectively, the two ends of the third longitudinal groove extend to the first transverse groove and the third transverse groove respectively, and the two sides of the third transverse groove extend to the first longitudinal groove respectively.
5. The tire pattern according to claim 4, characterized in that: A shoulder protrusion is arranged in the second transverse groove, and the shoulder protrusion consists of a shoulder first interface, a shoulder first transition surface, a shoulder second interface, a shoulder second transition surface, and a shoulder third interface; the shoulder second interface is tangentially connected to the shoulder first interface through the shoulder first transition surface, and the shoulder third interface is tangentially connected to the shoulder second interface through the shoulder second transition surface.
6. The tire pattern according to claim 5, characterized in that: The radial thickness from the first interface of the shoulder to the third interface of the shoulder is 3mm-7mm, the axial width of the first interface of the shoulder is 3mm-5mm, the curvature radius r4 of the first transition surface of the shoulder is 0.2mm≤r4≤1.0mm; the curvature radius r5 of the second transition surface of the shoulder is 0.4mm≤r5≤1.0mm.
7. The tire pattern according to claim 5, characterized in that: The angle α4 between the first interface of the shoulder and the radial direction of the tire is 3°≤α4≤5°.
8. The tire pattern according to claim 4, characterized in that: The third transverse groove is composed of a first middle interface, a first middle transition surface, and a second middle interface, wherein the second middle interface is tangently connected to the first middle interface through the first middle transition surface, the curvature radius of the first middle transition surface is smaller than the curvature radius of the longitudinal second transition surface, and the angle between the first middle interface and the tire radial direction is smaller than the angle between the longitudinal second interface and the tire radial direction.
9. The tire pattern according to claim 8, characterized in that: The curvature radius r3 of the first transition surface in the middle is 1mm≤r3≤10mm; the angle α3 between the first interface in the middle and the radial direction of the tire is 3°≤α3≤12°.
10. A RT tire, characterized in that: The tire pattern according to any one of claims 1 to 9 is arranged on the tread of the RT tire.