Tread pattern structure of a model vehicle tire, model vehicle tire

Abstract

The present application provides a model vehicle tire tread pattern structure, the tire tread is uniformly distributed with several pattern units in the tire circumferential direction, each pattern unit includes a tread center pattern group and a shoulder pattern group arranged horizontally along the tire axial direction; two circumferentially adjacent tread center pattern groups are staggered along the axial direction, the tread center pattern group is composed of two stacked center sub-pattern blocks arranged circumferentially; the shoulder pattern group is composed of two stacked shoulder sub-pattern blocks arranged circumferentially, the long side of the shoulder sub-pattern block is located in the tire axial direction, and the short side of the shoulder sub-pattern block is located in the tire circumferential direction; the angle between the axial inner side of the side wall of each center sub-pattern block and the top edge of the pattern block is 0°; the side wall of each center sub-pattern block and the top surface of the pattern block are only composed of a single circular arc surface.

Description

Technical Field

[0001] This invention relates to tire tread pattern structure, and more particularly to the tread pattern structure of model car tires and model car tires. Background Technology

[0002] In recent years, various car racing events have been held vigorously in the domestic market. Among them, model car racing has gained popularity among many enthusiasts due to its high entertainment value. The terrain for model car racing has expanded from the conventional cement and asphalt roads to entirely new off-road terrains, and the types of vehicles in the competition have gradually expanded from the traditional two-wheeled model cars to the emerging field of four-wheeled model cars.

[0003] Conventional racing model cars are primarily two-wheeled. To meet off-road traction requirements, their tire treads often consist of several independently shaped tread blocks arranged at 10' and 20' intervals, such as... Figure 1 As shown, this type of tread pattern offers good straight-line traction, but its steering is not very responsive and handling is poor. Furthermore, because the model car is relatively light, it is prone to shaking when turning, resulting in poor driving stability. Additionally, as... Figure 2 As shown, the inner sidewall 11' and outer sidewall 12' of the tread block are both planes and form angles with the normal plane of the top edge of the tread block. This design will create a strong tread block, but it will reduce the tire's cornering response and affect the overall cornering ease.

[0004] Therefore, it is difficult for ordinary model car tires to meet the requirements of traction, steering stability and handling ease when driving on off-road terrain, so as to achieve comprehensive performance. Summary of the Invention

[0005] The purpose of this invention is to provide an optimized tread pattern structure for a model car tire used on off-road surfaces, which can ensure the tire's traction while improving the tire's steering stability and handling ease on off-road surfaces.

[0006] To solve the above-mentioned technical problems, the present invention provides a tread pattern structure for a model car tire. The tread of the tire has a number of pattern units evenly distributed symmetrically at intervals along the tire circumference. Each pattern unit includes a tread center pattern group and a shoulder pattern group arranged horizontally along the tire axis.

[0007] The tread center pattern groups in two circumferentially adjacent pattern units are arranged alternately along the axial direction, and the tread center pattern group is composed of two central sub-pattern blocks stacked together by circumferential spacing.

[0008] The shoulder tread pattern group consists of two shoulder tread blocks stacked together at circumferential intervals. The long side of the shoulder tread block is located in the tire axial direction, and the short side of the shoulder tread block is located in the tire circumferential direction.

[0009] The angle between the inner sidewall of each center sub-pattern block and each shoulder sub-pattern block near the center of the tread and the edge of the top surface of the pattern block is 0°.

[0010] Each of the central sub-pattern blocks and each of the shoulder sub-pattern blocks has its axially outer sidewall away from the center of the tread and its top surface formed by only a single arc surface.

[0011] In a preferred embodiment, two identical near-square center sub-pattern blocks are stacked circumferentially to form a near-rectangular tread center pattern group;

[0012] The tire shoulder pattern group consists of two identical, nearly rectangular tread blocks stacked circumferentially to form a nearly square tread pattern group;

[0013] The axial length L2 of the shoulder tread block is greater than the axial length L1 of the center tread block;

[0014] The center tread pattern group and the shoulder tread pattern group in each tread unit are located on the same axial straight line, and the edges of the center tread pattern group or the shoulder tread pattern group of two adjacent tread units are located on the same axial straight line.

[0015] In a preferred embodiment, a plurality of the tread center pattern groups are arranged at circumferential intervals to form a circumferential column, and a plurality of the shoulder pattern groups are arranged at circumferential intervals to form a circumferential column.

[0016] In a preferred embodiment, the number of circumferential columns of the tread center pattern group distributed on the tread is even, the distribution structure of two circumferentially adjacent pattern units is the same, and the two are symmetrically alternated along the tread center plane.

[0017] In a preferred embodiment, the number of circumferential columns of the tread center pattern group distributed at the center of the tread is odd, and the pattern unit is divided into a first pattern unit and a second pattern unit.

[0018] The first pattern unit consists of an odd number of center tread pattern groups and two shoulder tread pattern groups, while the second pattern unit consists of an even number of center tread pattern groups.

[0019] Each of the first and second tread pattern units is symmetrically distributed along the center plane of the tire tread, and the first and second tread pattern units are arranged alternately.

[0020] In a preferred embodiment, the circumferential length of the center tread pattern group is H1, the circumferential length of the shoulder tread pattern group is H2, and H1 = H2; the circumferential length of the center sub-pattern block is H3, and the circumferential length of the shoulder sub-pattern block is H4, and H3 = H4.

[0021] In a preferred embodiment, the axial length of the center sub-pattern block is L1, and the axial length of the shoulder sub-pattern block is L2.

[0022] The ratio of L2 to L1 is 1.5-2.5; the ratio of H1 to L1 is 2-3; and the ratio of H2 to L2 is 1-1.5.

[0023] In a preferred embodiment, circumferential low ribs and axial low ribs are provided between the circumferential and axial intervals of the center tread pattern group;

[0024] A circumferential connecting strip is provided between two circumferentially adjacent shoulder tread patterns, and the two ends of the circumferential connecting strip are respectively connected to the corresponding shoulder tread blocks.

[0025] The present invention also provides a model car tire, wherein the tread pattern structure of the tire is configured as the tread pattern structure of the model car tire.

[0026] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0027] Through optimized design of the tire tread pattern for the model car, the tread consists of several tread units symmetrically and evenly distributed along the tire circumference. Each tread unit comprises a central tread group and a shoulder tread group arranged horizontally along the tire axis. The central tread groups in two adjacent circumferential tread units are arranged alternately and evenly along the axial direction. A rectangular central tread group is formed by stacking two identical near-square central sub-tread blocks circumferentially at intervals, and a near-square shoulder tread group is formed by stacking two identical rectangular shoulder sub-tread blocks circumferentially at intervals. The long side is located in the tire axial direction, and the short side is located in the tire circumferential direction. The axial length of the shoulder tread block is greater than the axial length of the center tread block. The angle between the inner sidewall of each center tread block and shoulder tread block near the center of the tread and the edge of the top surface of the tread block is 0 degrees. The outer sidewall of each center tread block and shoulder tread block away from the center of the tread and its top surface are composed of only a single arc surface. This configuration can ensure the traction of the tire while improving the steering stability and handling ease of the tire on off-road surfaces. Attached Figure Description

[0028] Figure 1 A schematic diagram of the tire tread pattern in the prior art;

[0029] Figure 2 For along Figure 1 Sectional view along line A-A' in the middle;

[0030] Figure 3 This is a schematic diagram of the tread pattern of the tire according to the first embodiment of the present invention;

[0031] Figure 4 For along Figure 3 Sectional view along line B-B' in the middle;

[0032] Figure 5 For along Figure 3 Sectional view along the C-C' direction;

[0033] Figure 6 This is a schematic diagram of the tire tread pattern in the second embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the tire tread pattern unfolded in the third embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the tire tread pattern in the fourth embodiment of the present invention.

[0036] Explanation of reference numerals in the attached drawings: 1. Tire tread; 10. Tread center tread pattern group; 10a. First upper edge; 10b. First lower edge; 11. Center sub-tread block; 111. First sidewall; 112. First top surface edge; 113. First arc surface; 20. Shoulder tread pattern group; 20a. Second upper edge; 20b. Second lower edge; 21. Shoulder sub-tread block; 211. Second sidewall; 212. Second top surface edge; 213. Second arc surface; 31. Circumferential low rib; 32. Axial low rib; 33. Connecting strip; A. Tread unit; B. First tread unit; C. Second tread unit. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0040] First embodiment, reference Figures 3-5 .

[0041] This embodiment provides a tread pattern structure for a model car tire, specifically a tread pattern structure for a four-wheeled model car tire used on off-road surfaces. The improved tread pattern structure design ensures tire traction while improving steering stability and handling ease on off-road surfaces.

[0042] like Figure 3 In the diagram, the vertical direction is set as the tire circumference, the direction perpendicular to the paper is set as the tire radial direction, and the lateral direction is set as the tire axial direction. The plane closer to the tire center plane is the inner side of the axial direction, and the plane farther from the tire center plane is the outer side of the axial direction.

[0043] The tire tread 1 consists of several tread units A evenly distributed symmetrically at intervals along the tire circumference. Each tread unit A includes a center tread pattern group 10 and a shoulder tread pattern group 20 arranged horizontally along the tire axial direction. The center tread pattern group 10 at the center of the tread can form a larger longitudinal edge, exerting a high longitudinal tread effect and enhancing the tire's handling performance. The shoulder tread pattern group 20 at the shoulder can form a combination of longitudinal and lateral edges, ensuring traction while improving tire steering stability.

[0044] Specifically, the tread center pattern groups 10 in two circumferentially adjacent pattern units A are arranged alternately and evenly along the axial direction. Each tread center pattern group 10 is formed by stacking two identical near-square center sub-pattern blocks 11 circumferentially. The tread center pattern group 10 is rectangular, with the two center sub-pattern blocks 11 stacked circumferentially. Similarly, the shoulder pattern group 20 is formed by stacking two identical rectangular shoulder sub-pattern blocks 21 circumferentially. The shoulder pattern group 20 is nearly square, with the two shoulder sub-pattern blocks 21 stacked circumferentially.

[0045] Each center sub-tread block 11 has the same height and width, resulting in a nearly square shape for each. Each shoulder sub-tread block 21 has the same height and width, resulting in a rectangular shape for each. The long side of the shoulder sub-tread block 21 is located along the tire axial direction, and the short side is located along the tire circumference. The axial length L2 of the shoulder sub-tread block 21 is greater than the axial length L1 of the center sub-tread block 11. Designing a tread block with a longer axial edge at the shoulder position can increase traction performance during cornering.

[0046] like Figure 3 In the same tread pattern unit A, the circumferential positions of each tread center tread group 10 and shoulder tread group 20 are the same. That is, the first upper edge 10a or the first lower edge 10b of each tread center tread group 10 in the same tread pattern unit A is located on the same axial straight line as the second upper edge 20a or the second lower edge 20b of the shoulder tread group 20 in the same tread pattern unit A. The edges of the tread center tread groups 10 or shoulder tread groups 20 of two adjacent tread patterns are located on the same axial straight line, that is, the first upper edge 10a of the tread center tread group 10 is located on the same axial straight line as the first lower edge 10b of the tread center tread group 10 in the adjacent tread pattern unit A, which can improve tire steering stability. The length H1 of the tread center tread group 10 formed by the circumferential stacking of two center sub-tread blocks 11 is the same as the length H2 of the shoulder tread group 20 formed by the circumferential stacking of two shoulder sub-tread blocks 21. When the tire is driving straight and turning, it can ensure balanced contact transfer and provide tire steering stability.

[0047] To improve tire traction during cornering, the ratio of the axial length L2 of the shoulder tread block 21 to the axial length L1 of the center tread block 11 is 1.5-2.5. The two stacked shoulder tread blocks 21 at the shoulder form a large lateral edge, ensuring sufficient traction during cornering. If the axial length L2 of the shoulder tread block 21 is too small, it will affect the improvement of tire cornering stability; if the axial length L2 of the shoulder tread block 21 is too large, the tire's responsiveness decreases, which in turn affects the overall handling performance of the tire. At the same time, the circumferential length H3 of the center tread block 11 is the same as the circumferential length H4 of the shoulder tread block 21, which ensures that each tread block has the same strength, providing balanced ground contact traction and ensuring tire steering stability.

[0048] Furthermore, the ratio of the circumferential length H1 of the tread center pattern group 10 formed by the circumferential stacking of two center sub-pattern blocks 11 to the axial length L1 of the center sub-pattern blocks 11 is 2-3. The two circumferentially stacked center sub-pattern blocks 11 form a large longitudinal edge, exerting a high longitudinal tread effect and enhancing the tire's handling performance. When the circumferential length H1 of the tread center pattern group 10 is too small, its effect on improving handling is limited; when the circumferential length H1 of the tread center pattern group 10 is too large, the tire lacks traction when cornering, and cornering performance decreases. The ratio of the circumferential length H2 of the shoulder pattern group 20 formed by the circumferential stacking of two shoulder sub-pattern blocks 21 to the axial length L2 of the shoulder sub-pattern blocks 21 is 1-1.5. When the circumferential length H2 of the shoulder tread group 20 is too small, the shoulder tread block 21 will lack rigidity when the tire is turning, making it easy for the shoulder tread block 21 to tear and be damaged, thus affecting the turning traction. When the circumferential length H2 of the shoulder tread group 20 is too large, the tire is prone to jamming when turning, which will affect the turning performance of the tire.

[0049] like Figures 4-5Each central sub-tread block 11 has a 0-degree angle between its first sidewall 111 near the tread center and the first top edge 112 of the tread block. Specifically, the inner sidewall (first sidewall 111) of the central sub-tread block 11 has a 0-degree angle with the first top edge 112 of the tread block. The outer sidewall of each central sub-tread block 11 away from the tread center and its top surface are directly formed by a single first arc surface 113. This arrangement allows the tread blocks to deform more easily when the tire is in contact with the ground, improving tire traction. The first arc surfaces 113 of the central sub-tread blocks 11 on both sides of the tread are located on the outer side of the tread block, making them symmetrically designed along the tread center, improving tire steering stability and ease of use. Similarly, the angle between the second sidewall 211 near the center of the tread and the edge 212 of the second top surface of each shoulder tread block 21 is 0 degrees. The axially outer sidewall of each shoulder tread block 21 away from the center of the tread and its top surface are directly formed by an independent second arc surface 213. That is, the top surface of the tread block and its axially outer sidewall are formed by a single second arc surface 213, and the second arc surfaces 213 of the shoulder tread blocks 21 on both sides of the tread are all located axially outside the tread block. When the tire contacts the ground, this design makes it easier for the tread blocks to deform, resulting in stronger tire traction; it also makes the axially inner and outer sidewalls of the tread blocks on both sides of the tread symmetrically designed along the center of the tread, improving tire steering stability and ease of handling.

[0050] Adopting such Figure 3 Various tire patterns with front and rear tires of 84X30 were prototyped for a four-wheeled model car, and their performance was tested and evaluated. Each test tire was fitted with a 23.7X55.8 rim on the front wheel and mounted on the four-wheeled model car. The car was driven on off-road terrain, and its driving path, turning response and stability, obstacle crossing ability and completion time were observed via remote control. Traction, steering stability, and handling ease were evaluated. After testing and evaluation, the traction, steering stability, and handling ease of this embodiment were superior to previous embodiments.

[0051] Test results confirm that this tread pattern design effectively ensures tire traction while improving steering stability and handling ease on off-road surfaces.

[0052] In this embodiment, a tire tread pattern structure is provided, in which several 10 circumferential center tread pattern groups are arranged to form a circumferential column, and several 20 circumferential shoulder tread pattern groups are arranged to form a circumferential column.

[0053] When the number of circumferential rows formed by the center tread pattern group 10 is even, the center tread pattern group 10 and the shoulder tread pattern group 20 in two circumferentially adjacent tread units A have the same distribution structure, and the two tread units A are arranged symmetrically and alternately along the center plane of the tread. This arrangement will allow the center tread pattern group 10 and the shoulder tread pattern group 20 to be arranged alternately, improving tire steering stability.

[0054] like Figure 3 A single tread unit A is provided, which includes a shoulder tread pattern group 20 and two tread center tread pattern groups 10, forming a tread center tread pattern group 10 with four circumferential rows on the tread.

[0055] Second embodiment, reference Figure 6 .

[0056] In this embodiment, a tire tread pattern structure is provided, in which several 10 circumferential center tread pattern groups are arranged to form a circumferential column, and several 20 circumferential shoulder tread pattern groups are arranged to form a circumferential column.

[0057] Consistent with the first embodiment, when the number of circumferential columns formed by the tread center pattern group 10 is set to an even number, the distribution differs from the first embodiment. A single pattern unit A includes a shoulder pattern group 20 and a tread center pattern group 10, forming a tread center pattern group 10 with two circumferential columns on the tread. Figure 6 .

[0058] Third embodiment, reference Figure 7 .

[0059] In this embodiment, a tire tread pattern structure is provided, in which several 10 circumferential center tread pattern groups are arranged to form a circumferential column, and several 20 circumferential shoulder tread pattern groups are arranged to form a circumferential column.

[0060] When the number of circumferential columns formed by the center tread pattern group 10 is odd, pattern unit A is divided into the first pattern unit B and the second pattern unit C, such as Figure 7 The first tread unit B consists of an odd number of center tread pattern groups 10 and two shoulder tread pattern groups 20 on both sides, while the second tread unit C consists of an even number of center tread pattern groups 10. Each first tread unit B and each second tread unit C are symmetrically arranged along the center plane of the tread and alternate with each other. This arrangement ensures that the center tread pattern groups 10 and the shoulder tread pattern groups 20 are arranged alternately, improving tire steering stability.

[0061] like Figure 7A first tread pattern unit B is provided, consisting of a central tread pattern group 10 and two shoulder tread pattern groups 20. A second tread pattern unit C is provided, consisting of two central tread pattern groups 10, forming a three-row circumferential central tread pattern group 10 on the tread. The first sidewalls 111 of the two central sub-pattern blocks 11 in the same central tread pattern group 10 located at the center plane of the tread are respectively located on both axial sides of the center of the tread. The first arc surfaces 113 of the two central sub-pattern blocks 11 in the same central tread pattern group 10 located at the center plane of the tread are respectively located on both axial sides of the center of the tread.

[0062] Fourth embodiment, reference Figure 8 .

[0063] In this embodiment, a tire tread pattern is provided that can improve the traction performance of tires on off-road terrain.

[0064] like Figure 8 Circumferential low ribs 31 and axial low ribs 32 can be provided between the circumferential and axial intervals of the center tread block 11. A circumferential connecting strip 33 can be provided between two circumferentially adjacent shoulder tread groups 20, with both ends of the connecting strip 33 connected to the corresponding shoulder tread blocks 21 of the two adjacent shoulder tread groups 20. This can improve the tire's traction performance on off-road terrain.

[0065] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. The tread pattern structure of a model car tire, characterized in that: The tire has several tread pattern units evenly distributed symmetrically along the tire circumference. Each tread pattern unit includes a center tread pattern group and a shoulder tread pattern group arranged horizontally along the tire axis. The tread center pattern groups in two circumferentially adjacent pattern units are arranged alternately along the axial direction. Each tread center pattern group is composed of two circumferentially spaced and stacked center sub-pattern blocks. The shoulder pattern group is composed of two circumferentially spaced and stacked shoulder sub-pattern blocks. The long side of the shoulder sub-pattern blocks is located in the tire axial direction, and the short side of the shoulder sub-pattern blocks is located in the tire circumferential direction. The angle between the inner sidewall of each center sub-pattern block and each shoulder sub-pattern block near the center of the tread and the edge of the top surface of the pattern block is 0°. Each of the central sub-pattern blocks and each of the shoulder sub-pattern blocks has its axially outer sidewall away from the center of the tread and its top surface formed by a single arc surface protruding radially outward from the tire.

2. The tread pattern structure of the model car tire according to claim 1, characterized in that: When viewed from above, the tread pattern consists of two identical, nearly square, central sub-pattern blocks stacked circumferentially to form a nearly rectangular central tread pattern group. The tire shoulder pattern group consists of two identical, nearly rectangular tread blocks stacked circumferentially to form a nearly square tread pattern group; The axial length L2 of the shoulder tread block is greater than the axial length L1 of the center tread block; The center tread pattern group and the shoulder tread pattern group in each tread unit are located on the same axial straight line, and the edges of the center tread pattern group or the shoulder tread pattern group of two adjacent tread units are located on the same axial straight line.

3. The tread pattern structure of the model car tire according to claim 1, characterized in that: Several of the tread center pattern groups are arranged at intervals along the circumference to form a circumferential column, and several of the shoulder pattern groups are arranged at intervals along the circumference to form a circumferential column.

4. The tread pattern structure of the model car tire according to claim 3, characterized in that: The number of circumferential rows of the tread center pattern group distributed on the tread is even. The distribution structure of two circumferentially adjacent pattern units is the same, and the two are symmetrically alternated along the tread center plane.

5. The tread pattern structure of the model car tire according to claim 3, characterized in that: The number of circumferential columns of the center pattern group on the tread is odd, and the pattern unit is divided into a first pattern unit and a second pattern unit. The first pattern unit consists of an odd number of center tread pattern groups and two shoulder tread pattern groups, while the second pattern unit consists of an even number of center tread pattern groups. Furthermore, the first pattern unit and the second pattern unit are arranged alternately.

6. The tread pattern structure of the model car tire according to claim 1, characterized in that: The circumferential length of the center tread pattern group is H1, the circumferential length of the shoulder tread pattern group is H2, and H1 = H2; the circumferential length of the center sub-pattern block is H3, and the circumferential length of the shoulder sub-pattern block is H4, and H3 = H4.

7. The tread pattern structure of the model car tire according to claim 6, characterized in that: The axial length of the center sub-pattern block is L1, and the axial length of the shoulder sub-pattern block is L2. The ratio of L2 to L1 is 1.5-2.5; the ratio of H1 to L1 is 2-3; and the ratio of H2 to L2 is 1-1.

5.

8. The tread pattern structure of the model car tire according to claim 1, characterized in that: Circumferential low ribs and axial low ribs are provided between the circumferential and axial intervals of the center tread pattern group. A circumferential connecting strip is provided between two circumferentially adjacent shoulder tread patterns, and the two ends of the circumferential connecting strip are respectively connected to the corresponding shoulder tread blocks.

9. Model car tires, characterized in that: The tread pattern structure of the tire is set to the tread pattern structure of the model car tire as described in any one of claims 1-8.

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