A tire tread pattern

Abstract

The present invention relates to a tire tread, belonging to the technical field of tires. The tire tread includes a continuous central wide rib provided in the middle of the tire running surface; on both sides of the central wide rib, a first circumferential groove, an intermediate tread block, a second circumferential groove, a side tread block, a shoulder circumferential fine groove and a shoulder tread block are sequentially arranged, and the parts on both sides of the central wide rib are centrosymmetric with respect to a central point of the central wide rib; an open shoulder transverse groove is provided between two adjacent shoulder tread blocks; and two arc-shaped steel sheets are provided on each shoulder tread block. The tire tread provided by the present invention can improve the braking performance and noise and comfort of the tire.

Description

Technical Field

[0001] The present invention belongs to the technical field of tires, and particularly relates to a tire tread pattern. Background Art

[0002] Tires are an important part of vehicles. As the only component in the vehicle structure that contacts the ground, tires play roles such as bearing the vehicle load, driving and braking, changing and maintaining the vehicle driving direction, and absorbing vibrations from the ground. With the continuous development of the new energy vehicle industry, tires, as important auto parts, are being paid more and more attention, and users have higher and higher requirements for the economy of tires. Among them, special attention is paid to the braking performance, quiet comfort, and wear resistance and safety of tires. Summary of the Invention

[0003] In view of this, the present invention provides a tire tread pattern that can improve the braking performance, quiet comfort, and wear resistance and safety of tires.

[0004] The present invention provides a tire tread pattern, including a continuous central wide rib provided in the middle of the tire running surface; on both sides of the continuous central wide rib, a first circumferential groove, an intermediate tread block, a second circumferential groove, a side tread block, a shoulder circumferential fine groove, and a shoulder tread block are sequentially arranged, and the parts on both sides of the central wide rib are centrosymmetric with respect to a central point of the central wide rib; an open shoulder transverse groove is provided between two adjacent shoulder tread blocks; two arc-shaped steel sheets are provided on each shoulder tread block.

[0005] Preferably, a wiper-type diversion groove is provided on the intermediate tread block.

[0006] Preferably, three streamline-shaped steel sheets are provided between two adjacent wiper-type diversion grooves; the three streamline-shaped steel sheets are arranged in a 'chuan' character shape, the middle streamline-shaped steel sheet communicates with both sides of the intermediate tread block, and the two streamline-shaped steel sheets on both sides are respectively connected to one side of the intermediate tread block in an alternating manner.

[0007] Preferably, the arc directions of the two arc-shaped steel sheets are opposite, and the two arc-shaped steel sheets are respectively connected to the adjacent open shoulder transverse grooves.

[0008] Preferably, an open side transverse groove is provided on the side tread block, and the open side transverse groove and the open shoulder transverse groove on the shoulder tread block are arranged in an alternating manner.

[0009] Preferably, two steel sheets are provided between two adjacent open side transverse grooves, and both steel sheets communicate with both sides of the side tread block.

[0010] Preferably, the intermediate tread blocks on both sides of the continuous central wide rib are arranged in an alternating manner, and the alternating distance between two adjacent tread blocks on both sides is 3 - 7 cm.

[0011] Preferably, the width of the shoulder tread block is 14%-20% of the width of the tire tread.

[0012] Preferably, the width of the continuous central wide rib is 5%-8% of the width of the tire tread; the widths of the first circumferential groove and the second circumferential groove are independently 4%-7% of the width of the tire tread respectively.

[0013] Preferably, the number of pitches of the intermediate tread block, the side tread block and the shoulder tread block is the same, which is 75-90; the angles of the open shoulder transverse groove and the open side transverse groove with the vertical direction are equal, which is 70°-80°.

[0014] The tire tread provided by the present invention has achieved the following technical effects:

[0015] The tire tread provided by the present invention adopts a continuous central wide rib tread design, which avoids the defect of easy deformation of the block tread and realizes faster dry braking and effective acceleration traction performance while. Four wide circumferential grooves are provided to efficiently discharge accumulated water, shorten the braking distance and improve the wet handling performance; the shoulder circumferential fine groove design is connected with the open shoulder transverse groove to discharge the accumulated water at the shoulder, effectively improving the wet grip. Two arc-shaped steel sheets are arranged on the shoulder tread block, which not only increases the beauty but also improves the sea-land ratio, increases the grounding area, ensures strong grip and handling performance, and is connected with the open shoulder transverse groove, which is beneficial to drainage and improves the wet braking performance.

[0016] Furthermore, wiper-type diversion grooves are arranged on the intermediate tread block, which can introduce the water film on the intermediate tread block into the main drainage groove, and then discharge the accumulated water faster, so that the tire maintains better wet grip. High-density streamline steel sheets are arranged between two adjacent wiper-type diversion grooves, which can increase the bite of the tread and improve the wet braking performance.

[0017] Furthermore, open side transverse grooves are arranged on the side tread block, which are arranged staggered with the open shoulder transverse grooves to reduce air flow and thus reduce tire noise. By setting the multi-pitch tread blocks on the tread, the noise generated by resonance between the tread blocks is reduced, and the overall noise is reduced by arranging steel sheets and misaligning the tread blocks on the side tread block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the tire tread of the present invention;

[0020] Figure 2Schematic diagram of the structure of the side tread blocks of the tire of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the circumferential fine grooves on the shoulder of the tire of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the shoulder tread blocks of the tire of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the tire tread in Scheme 1;

[0024] Figure 6 Schematic diagram of the structure of the tire tread in Scheme 2;

[0025] Figure 7 Schematic diagram of the structure of the tire tread in Scheme 3;

[0026] Among them, 1 - continuous central wide rib, 2 - first circumferential groove, 3 - intermediate tread block, 4 - second circumferential groove, 5 - side tread block, 51 - open side transverse groove, 52 - steel sheet, 6 - shoulder circumferential fine groove, 61 - wiper type diversion groove, 62 - streamline steel sheet, 7 - shoulder tread block, 71 - open shoulder transverse groove, 72 - arc-shaped steel sheet. Detailed implementation manners

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figure 1-4 shown, the present invention provides a tire tread, including a continuous central wide rib 1 arranged in the middle of the tire running surface; on both sides of the continuous central wide rib 1, a first circumferential groove 2, an intermediate tread block 3, a second circumferential groove 4, a side tread block 5, a shoulder circumferential fine groove 6 and a shoulder tread block 7 are arranged in sequence, and the parts on both sides of the continuous central wide rib 1 are centrosymmetric with respect to a central point of the continuous central wide rib 1; an open shoulder transverse groove 71 is arranged between two adjacent shoulder tread blocks 7; two arc-shaped steel sheets 72 are arranged on each shoulder tread block 7.

[0029] In the present invention, by providing a continuous central wide rib 1 in the middle of the tire tread, not only can the defect that blocky treads are prone to deformation be avoided, but also faster dry braking and effective acceleration traction performance can be achieved. Four circumferential wide grooves are provided to efficiently drain accumulated water, shorten the braking distance, and improve wet handling performance; the design of the circumferential fine grooves 6 on the shoulders, connected to the open shoulder transverse grooves 71, drains the accumulated water on the shoulders and effectively improves wet grip. Two arc-shaped steel sheets 72 are provided on the shoulder tread blocks 7, which not only increases the aesthetics but also improves the land-sea ratio, increases the contact area with the ground, and ensures strong grip and handling performance.

[0030] In the present invention, further, the intermediate tread blocks 3 on both sides of the continuous central wide rib 1 are staggered, and the staggering distance between two adjacent tread blocks 3 on both sides is 3 - 7 cm. In the present invention, through such a setting, the overall noise can be reduced.

[0031] In the present invention, further, the width of the continuous central wide rib 1 is 5% - 8% of the width of the tire tread.

[0032] In the present invention, further, the widths of the first circumferential groove 2 and the second circumferential groove 4 are independently 4% - 7% of the width of the tire tread.

[0033] In the present invention, further, the width of the intermediate tread block 3 is 12% - 18% of the width of the tire tread; the width of the side tread block 5 is 4 - 6% of the width of the tire tread; the width of the circumferential fine groove 6 on the shoulder is 1% - 2% of the width of the tire tread.

[0034] In the present invention, further, a wiper - type diversion groove 61 is provided on the intermediate tread block 3. In this embodiment, by providing the wiper - type diversion groove 61 on the intermediate tread block 3, the water film on the intermediate tread block 3 can be introduced into the main drainage groove, and thus the accumulated water can be drained faster, enabling the tire to maintain better wet grip.

[0035] In the present invention, further, three streamlined steel sheets 62 are provided between two adjacent wiper - type diversion grooves 61; the three streamlined steel sheets 62 are arranged in a 'chuan' character shape, with the middle streamlined steel sheet 62 communicating with both sides of the intermediate tread block 3, and the two streamlined steel sheets 62 on both sides respectively communicating with one side of the intermediate tread block 3 in a staggered manner. In this embodiment, by providing high - density streamlined steel sheets 62 on the intermediate tread block 3, the bite of the tread can be increased, and the wet braking performance can be improved.

[0036] In the present invention, further, the arcs of the two arc-shaped steel sheets 72 are in opposite directions, and the two arc-shaped steel sheets 72 are respectively connected to the adjacent open shoulder transverse grooves 71. In this embodiment, by connecting the arc-shaped steel sheets 72 to the adjacent open shoulder transverse grooves 71, it is beneficial to drainage and improves the wet braking performance.

[0037] In the present invention, further, open side transverse grooves 51 are provided on the side tread blocks 5, and the open side transverse grooves 51 are arranged in an alternating manner with the open shoulder transverse grooves 71 on the shoulder tread blocks 7. In this embodiment, by arranging the open side transverse grooves 51 in an alternating manner with the open shoulder transverse grooves 71 on the shoulder tread blocks 7, the air flow can be reduced to lower the tire noise.

[0038] In the present invention, further, two steel sheets 52 are provided between two adjacent open side transverse grooves 51, and the two steel sheets 52 communicate with both sides of the side tread blocks 5. In this embodiment, such an arrangement is beneficial to drainage and noise reduction.

[0039] In the present invention, further, the number of pitches between the intermediate tread blocks 3, the side tread blocks 5 and the shoulder tread blocks 7 is the same, which is 75 - 90; the angles of the open shoulder transverse grooves 71 and the open side transverse grooves 51 with the vertical direction are equal, which is 70° - 80°. In this embodiment, by arranging the multi-pitch tread blocks on the tread surface, the noise generated by resonance between the tread blocks can be reduced.

[0040] In the present invention, further, the width of the shoulder tread blocks 7 is 14% - 20% of the width of the tire running surface. In this embodiment, by such an arrangement, with the wide shoulder tread blocks 7, the grounding area during cornering can be increased, ensuring excellent cornering stability and precise steering response.

[0041] Performance Test

[0042] Solution 1

[0043] Taking a 205 / 60R16 tire as an example, the specific tire tread structure is as Figure 5 shown. A continuous central wide rib 1 (with a width of 6.6% of the width of the tire running surface) is provided in the middle of the tire running surface; on both sides of the continuous central wide rib 1, a first circumferential groove 2 (with a width of 5% of the width of the tire running surface), intermediate tread blocks 3 (the width of the intermediate tread blocks 3 is 15% of the width of the tire running surface, and the staggered distance between two adjacent intermediate tread blocks on both sides of the continuous central wide rib is 10 cm), and a second circumferential groove 4 are sequentially provided.

[0044] (Width is 5% of the tread width of the tire), the side tread blocks 5 (width is 4.2% of the tread width of the tire), the shoulder circumferential fine grooves 6 (width is 1% of the tread width of the tire), and the shoulder tread blocks 7 (width is 16.5% of the tread width of the tire). An open shoulder transverse groove 71 is provided between two adjacent shoulder tread blocks 7, and two arc-shaped steel sheets 72 connected to the adjacent open shoulder transverse grooves 71 are provided on each shoulder tread block 7. An open side transverse groove 51 staggered with the open shoulder transverse groove 71 is provided on the side tread block 5. A wiper-type diversion groove 61 is provided on the intermediate tread block 3. And three streamline-shaped steel sheets 62 arranged in a "chuan" character shape are provided between two adjacent wiper-type diversion grooves 61. The number of pitches between the intermediate tread block 3, the side tread block 5, and the shoulder tread block 7 is 76. The angles of the open shoulder transverse groove 71 and the open side transverse groove 51 with respect to the vertical direction are 75°. The specific performance test results are shown in Table 1. Seven microphones are used to measure the noise, and the specific results are shown in Table 2.

[0045] Solution 2

[0046] The difference from Solution 1 is that two steel sheets 52 communicating with both sides of the side tread block 5 are further provided between two adjacent open side transverse grooves 51. The specific solution is as follows:

[0047] Taking the 205 / 60R16 tire as an example, the specific tire tread structure is as Figure 6As shown in the figure, a continuous central wide rib 1 (with a width of 6.6% of the width of the tire tread) is provided in the middle of the tire tread; on both sides of the continuous central wide rib 1, a first circumferential groove 2 (with a width of 5% of the width of the tire tread), an intermediate tread block 3 (the width of the intermediate tread block 3 is 15% of the width of the tire tread, and the staggered distance between two adjacent intermediate tread blocks on both sides of the continuous central wide rib is 10 cm), a second circumferential groove 4 (with a width of 5% of the width of the tire tread), a side tread block 5 (with a width of 4.2% of the width of the tire tread), a shoulder circumferential fine groove 6 (with a width of 1% of the width of the tire tread), and a shoulder tread block 7 (with a width of 16.5% of the width of the tire tread) are successively arranged. An open shoulder transverse groove 71 is provided between two adjacent shoulder tread blocks 7, and two arc-shaped steel sheets 72 connected to the adjacent open shoulder transverse grooves 71 are provided on each shoulder tread block 7. An open side transverse groove 51 staggered with the open shoulder transverse groove 71 is provided on the side tread block 5. Two steel sheets 52 communicating with both sides of the side tread block 5 are provided between two adjacent open side transverse grooves 51. A wiper-type diversion groove 61 is provided on the intermediate tread block 3. And three streamline-shaped steel sheets 62 arranged in a "chuan" character shape are provided between two adjacent wiper-type diversion grooves 61. The pitch numbers between the intermediate tread block 3, the side tread block 5, and the shoulder tread block 7 are all 76. The angles of the open shoulder transverse groove 71 and the open side transverse groove 51 with the vertical direction are 75°. The specific performance test results are shown in Table 1. 7 microphones are used to measure the noise, and the specific results are shown in Table 2.

[0048] Solution 3

[0049] The difference from Solution 2 is that the staggered distance between two adjacent intermediate tread blocks on both sides of the continuous central wide rib is 5.4 cm. The specific solution is as follows:

[0050] Taking the 205 / 60R16 tire as an example, the specific tire tread structure is as Figure 7As shown in the figure, a continuous central wide rib 1 (with a width of 6.6% of the width of the tire tread) is provided in the middle of the tire tread; on both sides of the continuous central wide rib 1, a first circumferential groove 2 (with a width of 5% of the width of the tire tread), an intermediate tread block 3 (the width of the intermediate tread block 3 is 15% of the width of the tire tread, and the staggered distance between two adjacent intermediate tread blocks on both sides of the continuous central wide rib is 5.4 cm), a second circumferential groove 4 (with a width of 5% of the width of the tire tread), a side tread block 5 (with a width of 4.2% of the width of the tire tread), a shoulder circumferential fine groove 6 (with a width of 1% of the width of the tire tread), and a shoulder tread block 7 (with a width of 16.5% of the width of the tire tread) are arranged in sequence. An open shoulder transverse groove 71 is provided between two adjacent shoulder tread blocks 7, and two arc-shaped steel sheets 72 connected to the adjacent open shoulder transverse grooves 71 are provided on each shoulder tread block 7. An open side transverse groove 51 staggered with the open shoulder transverse groove 71 is provided on the side tread block 5. Two steel sheets 52 communicating with both sides of the side tread block 5 are provided between two adjacent open side transverse grooves 51. A wiper-type diversion groove 61 is provided on the intermediate tread block 3. And three streamline-shaped steel sheets 62 arranged in a "Chuan" character shape are provided between two adjacent wiper-type diversion grooves 61. The number of pitches between the intermediate tread block 3, the side tread block 5, and the shoulder tread block 7 is 76. The angles of the open shoulder transverse groove 71 and the open side transverse groove 51 with the vertical direction are 75°. The specific performance test results are shown in Table 1. 7 microphones are used to measure the noise, and the specific results are shown in Table 2.

[0051] Table 1 Performance Test Results

[0052] 205 / 60R16 Solution 1 Solution 2 Solution 3 Rolling resistance 8.72 8.68 8.56 Noise 72 71 70 Slipperiness 1.43 1.46 1.53 Wet braking (m) 30 28 24 Comfort 7- 7 7 Wear performance (km / mm) 1600 1600 1600

[0053] As can be seen from Table 1, in Scheme 1, the overall performance is the worst, and in Scheme 3, it is the best. The tire tread provided by Scheme 3 has low rolling resistance, low noise, and good wet handling performance.

[0054] Table 2 Microphone Noise Analysis

[0055] Total noise value (db) Solution 1 Solution 2 Solution 3 Microphone 1 81.09 80.11 79.86 Microphone 2 81.03 80.03 79.23 Microphone 3 81.51 80.40 80.20 Microphone 4 81.97 80.38 79.38 Microphone 5 81.36 80.26 79.20 Microphone 6 81.31 80.41 79.21 Microphone 7 81.57 80.67 79.48 ISO 72.64 71.40 70.20

[0056] As can be seen from Table 2, in Scheme 1, the noise value is the largest. In Scheme 2, by adding steel sheets, the ISO value of the noise can be reduced by 2.4 dB, and the noise of all 7 microphones is reduced, and the reduction amplitude is mostly above 1.6 dB; in Scheme 3, the noise is the smallest. Compared with Scheme 2, the noise can be reduced by 1.2 dB, and all 7 microphones are reduced, and among them, the reduction of microphones 6 and 7 is the most obvious.

[0057] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A tire tread, characterized in that, It includes a continuous central wide rib provided in the middle of the tire tread; a first circumferential groove, an intermediate tread block, a second circumferential groove, a side tread block, a shoulder circumferential fine groove, and a shoulder tread block are sequentially arranged on both sides of the continuous central wide rib, and the parts on both sides of the continuous central wide rib are centrosymmetric with respect to a central point of the continuous central wide rib; an open shoulder transverse groove is provided between two adjacent shoulder tread blocks; two arc-shaped steel sheets are provided on each shoulder tread block, the arc directions of the two arc-shaped steel sheets are opposite, and the two arc-shaped steel sheets are respectively connected to the adjacent open shoulder transverse grooves; a wiper-type diversion groove is provided on the intermediate tread block, and three streamline-shaped steel sheets are provided between two adjacent wiper-type diversion grooves; the three streamline-shaped steel sheets are arranged in a "chuan" character shape, the middle streamline-shaped steel sheet communicates with both sides of the intermediate tread block, and the two streamline-shaped steel sheets on both sides are respectively staggered and communicate with one side of the intermediate tread block; an open side transverse groove is provided on the side tread block, and the open side transverse groove is staggered with the open shoulder transverse groove on the shoulder tread block, and two steel sheets are provided between two adjacent open side transverse grooves, and both steel sheets communicate with both sides of the side tread block.

2. The tire tread according to claim 1, characterized in that, The intermediate tread blocks on both sides of the continuous central wide rib are staggered, and the staggering distance between two adjacent tread blocks on both sides is 3-7 cm.

3. The tire tread according to claim 1, characterized in that, The width of the shoulder tread block is 14%-20% of the width of the tire tread.

4. The tire tread according to claim 1, characterized in that, The width of the continuous central wide rib is 5%-8% of the width of the tire tread; the widths of the first circumferential groove and the second circumferential groove are independently 4%-7% of the width of the tire tread respectively.

5. The tire tread according to claim 1, wherein, The intermediate tread block, the side tread block, and the shoulder tread block have the same number of pitch, which is 75-90; the angles of the open shoulder transverse groove and the open side transverse groove with the vertical direction are equal, which is 70°-80°.

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