Tire

Abstract

The utility model provides a tire which comprises a middle pattern module, a side pattern module and a sidewall pattern module, a first longitudinal groove is formed between the side pattern module and the middle pattern module, a second longitudinal groove is formed in the middle pattern module, and a plurality of first transverse grooves are formed in the side pattern module; the groove bottom of the first longitudinal groove is provided with a plurality of first protruding blocks arranged at intervals in the extending direction of the first longitudinal groove, the groove bottom of the first transverse groove is provided with a plurality of second protruding blocks arranged at intervals in the extending direction of the first transverse groove, and a plurality of drainage grooves are formed in the second longitudinal groove and arranged at intervals in the extending direction of the second longitudinal groove. The two ends of each drainage groove are connected and communicated with the two oppositely-arranged groove walls of the second longitudinal groove respectively. The utility model solves the problem that in the prior art, the water and stone discharging performance of an RT tire is poor when the RT tire runs on a severe road condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tire technical field, specifically, relate to a tire. BACKGROUND

[0002] The tire is the key part of automobile and road connection, and its main role is to improve the riding experience and the stability of driving. At the same time, it ensures the adhesion of wheel and ground, and then enhances the traction, braking effect and passing capacity of vehicle. Different types of tires have a direct impact on driving experience and use feeling. At present, the RT tire designed for off-road road is relatively rare in China market. RT tire refers to the off-road tire suitable for professional off-road road, that is, hybrid all-terrain tire, and the off-road performance is better than ordinary tire, and the pattern sea and land ratio is small, and the grip performance and rock climbing performance required for off-road road are relatively strong.

[0003] If the vehicle is in the harsh road conditions such as driving from North America to Gobi, without using the tire matched with the environment, damage is easy to appear, and driving risk is increased. Especially, the tire is easy to appear in the rain and snow weather drainage capacity, stone road condition under the stone, etc. Conditions, which will significantly reduce the safety of driving. UTILITARIAN CONTENT

[0004] The main purpose of the utility model is to provide a kind of tire, to solve the problem that RT tire in prior art is prone to poor drainage and stone removal performance when driving in harsh road conditions.

[0005] In order to achieve the above purpose, according to the utility model provides a kind of tire, it includes: middle part pattern block, side pattern block and sidewall pattern block, first longitudinal groove is arranged between side pattern block and middle part pattern block, second longitudinal groove is arranged on middle part pattern block, a plurality of first transverse grooves are arranged in side pattern block, a plurality of first transverse grooves are arranged along the circumferential direction of tire, one end of each first transverse groove extends to the shoulder of tire, the other end of each first transverse groove extends to the first longitudinal groove and penetrates; the groove bottom of first longitudinal groove is provided with a plurality of first protruding blocks arranged along the extension direction of first longitudinal groove, the groove bottom of first transverse groove is provided with a plurality of second protruding blocks arranged along the extension direction of first transverse groove, a plurality of drainage grooves are arranged in second longitudinal groove, a plurality of drainage grooves are arranged along the extension direction of second longitudinal groove, and two ends of each drainage groove are connected with the two groove walls of second longitudinal groove and penetrate.

[0006] Further, the tire has a tread center line extending along a circumferential direction of the tire, the tread center line divides the tread into two tread portions, the tread center line divides the middle pattern block into two first middle pattern sub-blocks, each tread portion is provided with a preset pattern, the preset pattern includes the first middle pattern sub-block, a side pattern block and a side wall pattern block, the tire has a predetermined plane parallel to a central axis of the tire, a projection intersection of the central axis of the tire and the tread center line on the predetermined plane is a rotationally symmetric center, and the preset pattern on each tread portion is centrally symmetrically arranged relative to the rotationally symmetric center.

[0007] Further, each tread portion includes a plurality of tread sub-portions arranged in sequence along the circumferential direction of the tire, a length of each tread sub-portion along the circumferential direction of the tire is a preset pitch, and preset pitches of any three adjacent tread sub-portions are different.

[0008] Further, the preset pitch of each tread sub-portion is any one of three different pitch lengths, the three pitch lengths are a first pitch length s1, a second pitch length s2 and a third pitch length s3, in the plurality of tread sub-portions, at least one tread sub-portion has the first pitch length s1, at least one tread sub-portion has the second pitch length s2, and at least one tread sub-portion has the third pitch length s3, and s1:s2:s3=1.05:1.25:1.45.

[0009] Further, a ratio between a ground contact area of the first middle pattern sub-block and a ground contact area of the side pattern block is 3:2, and a proportion of a sum of the ground contact area of the first middle pattern sub-block and the ground contact area of the side pattern block in a total pattern ground contact area on the tread portion is 62.7% to 63.8%.

[0010] Further, a ratio between a groove width of the first transverse groove and a width of the tread sub-portion where the first transverse groove is located is 0.11:1 to 0.13:1.

[0011] Further, a ratio between a width of the side pattern block on the tread sub-portion along the circumferential direction of the tire and a width of the tread sub-portion where the side pattern block is located is 0.17:1 to 0.25:1.

[0012] Further, a ratio between a width of the middle pattern block on the tread sub-portion along the circumferential direction of the tire and a width of the tread sub-portion where the middle pattern block is located is 0.334:1 to 0.352:1.

[0013] Further, the first middle part pattern sub-block is provided with a plurality of first steel sheets, the plurality of first steel sheets are arranged at intervals along the circumferential direction of the tire, and the extension direction of the first steel sheet is arranged intersectingly with the extension direction of the drainage groove; the side edge pattern group block is provided with a plurality of second steel sheets, and the plurality of second steel sheets and the plurality of first transverse grooves are arranged alternately along the circumferential direction of the tire.

[0014] Further, the tire side pattern group block comprises a plurality of first pattern structures and a plurality of second pattern structures, and the plurality of first pattern structures and the plurality of second pattern structures are arranged alternately along the circumferential direction of the tire; along the axial direction of the tire, the side away from the side edge pattern group block of the first pattern structure is an arc-shaped side, the side close to the side edge pattern group block of the second pattern structure is an arc-shaped side, and the first pattern structure is provided with a third steel sheet.

[0015] The technical scheme of the utility model is applied to the tire, which comprises a middle part pattern group block, a side edge pattern group block and a tire side pattern group block, the first longitudinal groove is arranged between the side edge pattern group block and the middle part pattern group block, the second longitudinal groove is arranged on the middle part pattern group block, a plurality of first transverse grooves are arranged in the side edge pattern group block, a plurality of first protruding blocks are arranged on the groove bottom of the first longitudinal groove, a plurality of second protruding blocks are arranged on the groove bottom of the first transverse groove, so that the stones are not easy to enter the first longitudinal groove and the first transverse groove; a plurality of drainage grooves are arranged in the second longitudinal groove, so that the water in the second longitudinal groove can be quickly drained by the drainage grooves, which helps to improve the water drainage and stone removal performance of the tire, thereby solving the problem that the RT tire in the prior art is prone to poor water drainage and stone removal performance when running in harsh road conditions, and enabling the tire to effectively remove mud, ice and snow and stones and improve the self-cleaning ability. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application. The use of the same reference numbers in different drawings is intended to denote the same or similar elements.

[0017] Figure 1 A structure schematic view of an embodiment of the tire according to the utility model is shown;

[0018] Figure 2 A structure schematic view of a tire side pattern group block according to the utility model is shown;

[0019] Figure 3 A structure schematic view of a middle part pattern group block of the tire according to the utility model is shown;

[0020] Figure 4 A structure schematic view of a side edge pattern group block of the tire according to the utility model is shown;

[0021] Figure 5A first structure schematic view of a first steel sheet of a tire according to the utility model is shown.

[0022] Figure 6 A second structure schematic view of a first steel sheet of a tire according to the utility model is shown.

[0023] Figure 7 A structure schematic view of a second steel sheet of a tire according to the utility model is shown.

[0024] Figure 8 A structure schematic view of a third steel sheet of a tire according to the utility model is shown.

[0025] Among them, the above-mentioned drawing includes the following figure marks:

[0026] 10, middle pattern block; 11, first middle pattern sub-block; 20, side edge pattern block; 21, first transverse groove; 30, side edge pattern block; 31, first pattern structure; 32, second pattern structure; 33, third steel sheet; 40, first longitudinal groove; 41, first protruding block; 42, second protruding block; 50, second longitudinal groove; 6, center line of the tread; 81, first steel sheet; 82, second steel sheet; 13, drainage groove; 311, recessed part. DETAILED DESCRIPTION

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0028] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It will be further understood that the various parts shown in the drawings are not necessarily drawn to scale and that, for the purposes of convenience and clarity, not all components can be shown in a given figure. Techniques, methods, and apparatus known to those of ordinary skill can not be discussed in detail because such techniques, methods, and apparatus are considered to be part of the existing art. In all examples shown and discussed herein, any particular values are to be interpreted as merely examples, and not a limitation. Other examples of example embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the following drawings, and, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0029] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0030] Please refer to Figures 1 to 8 The utility model provides a kind of tire, comprising: middle part pattern block 10, side pattern block 20 and sidewall pattern block 30, first longitudinal groove 40 is provided between side pattern block 20 and middle part pattern block 10, second longitudinal groove 50 is provided on middle part pattern block 10, a plurality of first transverse grooves 21 are provided in side pattern block 20, a plurality of first transverse grooves 21 are spaced apart along the circumferential direction of tire, one end of each first transverse groove 21 extends to the shoulder of tire, the other end of each first transverse groove 21 extends to and penetrates with first longitudinal groove 40 connection;The groove bottom of first longitudinal groove 40 is provided with a plurality of first protruding blocks 41 spaced apart along the extension direction of first longitudinal groove 40, the groove bottom of first transverse groove 21 is provided with a plurality of second protruding blocks 42 spaced apart along the extension direction of first transverse groove 21, a plurality of drainage grooves 13 are provided in second longitudinal groove 50, a plurality of drainage grooves 13 are spaced apart along the extension direction of second longitudinal groove 50, both ends of each drainage groove 13 are connected with and penetrate through the two groove walls oppositely arranged of second longitudinal groove 50 respectively.

[0031] The tire of the utility model comprises middle part pattern block 10, side pattern block 20 and sidewall pattern block 30, first longitudinal groove 40 is provided between side pattern block 20 and middle part pattern block 10, second longitudinal groove 50 is provided on middle part pattern block 10, a plurality of first transverse grooves 21 are provided in side pattern block 20, by being provided with a plurality of first protruding blocks 41 in the groove bottom of first longitudinal groove 40, the groove bottom of first transverse groove 21 is provided with a plurality of second protruding blocks 42, so that stone is not easy to enter first longitudinal groove 40 and first transverse groove 21;By being provided with a plurality of drainage grooves 13 in second longitudinal groove 50, so that drainage groove 13 can quickly drain the water in second longitudinal groove 50, help to improve the drainage and stone performance of the tire of the utility model, thereby solve the problem that RT tire in the prior art is prone to poor drainage and stone performance when driving in bad road conditions, so that the tire of the present application can effectively remove soil, ice and snow and stones, and improve self-cleaning ability.

[0032] In the embodiment, the tire has a tread center line 6 extending along the circumferential direction of the tire, the tread center line 6 divides the tread into two tread portions, the tread center line 6 divides the middle portion pattern block 10 into two first middle portion pattern sub-blocks 11, each tread portion is provided with a preset pattern, the preset pattern includes the first middle portion pattern sub-block 11, the side edge pattern block 20 and the sidewall pattern block 30, the tire has a predetermined plane parallel to the central axis thereof, the intersection of the projection of the central axis of the tire and the tread center line 6 on the predetermined plane is the center of rotational symmetry, and the preset pattern on each tread portion is centrally symmetrically arranged relative to the center of rotational symmetry.

[0033] In the embodiment, each tread portion includes a plurality of tread sub-portions arranged in sequence along the circumferential direction of the tire, the length of each tread sub-portion along the circumferential direction of the tire is a preset pitch, and the preset pitches of any three adjacent tread sub-portions are different.

[0034] In the embodiment, the preset pitch of each tread sub-portion is any one of three different pitch lengths, and the three pitch lengths are a first pitch length s1, a second pitch length s2 and a third pitch length s3; among the plurality of tread sub-portions, at least one tread sub-portion has a pitch length of the first pitch length s1, at least one tread sub-portion has a pitch length of the second pitch length s2, and at least one tread sub-portion has a pitch length of the third pitch length s3; wherein s1:s2:s3=1.05:1.25:1.45.

[0035] Specifically, by setting the preset pitches of any three adjacent tread sub-portions to be different, and by setting the preset pitch of each tread sub-portion to be any one of three different pitch lengths, the three different pitches are arranged in disorder and confusion along the circumferential direction of the tire according to the simulation results, which can affect the vibration frequency of the gas in the pattern groove, effectively disrupt the pattern noise frequency, improve the noise comfort in driving, and meet the user's all-terrain use requirements.

[0036] In the embodiment, the ratio between the ground contact area of the first middle portion pattern sub-block 11 and the ground contact area of the side edge pattern block 20 is 3:2, and the proportion of the sum of the ground contact areas of the first middle portion pattern sub-block 11 and the side edge pattern block 20 in the total pattern ground contact area on the tread portion is 62.7% to 63.8%.

[0037] Specifically, such a setting provides good handling stability for the tire during high-speed travel. In addition, the wide second longitudinal groove 50 helps to improve the drainage performance of the tire, thereby reducing the occurrence of side slip phenomenon in adverse road conditions and improving the handling of the tire.

[0038] Specifically, the pattern appearance design of the tire is irregular, looks atmospheric and rough, and meets the M / T wild appearance aesthetics. The various pattern blocks are fully contacted with the ground during driving, ensuring that the utilization rate of the pattern blocks is high, and experiments have verified that the ground contact rate of the tire is controlled within the range of 51%-53%, which improves the wear performance of the tire and ensures the control performance of the tire. Meanwhile, the mutual interlocking staggered design of the various pattern blocks prevents tire eccentric wear, and enhances the traction performance and off-road escape ability of the tire.

[0039] In the embodiment, the ratio between the groove width of the first transverse groove 21 and the width of the tread sub-portion where the first transverse groove 21 is located is in the range of 0.11:1 to 0.13:1.

[0040] Specifically, such a setting can significantly improve the drainage capacity of the pattern, effectively improve the drainage and mud removal performance, and enhance the safety of the tire.

[0041] In the embodiment, the ratio between the width of the side pattern block 20 in the circumferential direction of the tire on the tread sub-portion and the width of the tread sub-portion where the side pattern block 20 is located is in the range of 0.17:1 to 0.25:1.

[0042] Specifically, such a setting can improve the straight driving stability of the vehicle and enhance the small-angle steering responsiveness of the tire, so that it can quickly respond in harsh road conditions.

[0043] In the embodiment, the ratio between the width of the central pattern block 10 in the circumferential direction of the tire on the tread sub-portion and the width of the tread sub-portion where the central pattern block 10 is located is in the range of 0.334:1 to 0.352:1.

[0044] Specifically, such a setting can improve the straight driving stability of the vehicle and enhance the small-angle steering responsiveness of the tire, so that it can quickly respond in harsh road conditions.

[0045] In the embodiment, a plurality of first steel sheets 81 are arranged on the first central pattern sub-block 11, the plurality of first steel sheets 81 are arranged at intervals in the circumferential direction of the tire, the extension direction of the first steel sheet 81 and the extension direction of the drainage groove 13 are arranged intersectingly, a plurality of second steel sheets 82 are arranged on the side pattern block 20, and the plurality of second steel sheets 82 and the plurality of first transverse grooves 21 are arranged alternately in the circumferential direction of the tire.

[0046] In the embodiment, the side wall pattern block 30 comprises a plurality of first pattern structures 31 and a plurality of second pattern structures 32, the plurality of first pattern structures 31 and the plurality of second pattern structures 32 are arranged alternately along the circumferential direction of the tire; along the axial direction of the tire, the side away from the side edge pattern block 20 of the first pattern structure 31 is an arc-shaped side, the side close to the side edge pattern block 20 of the second pattern structure 32 is an arc-shaped side, and the first pattern structure 31 is provided with a third steel sheet 33.

[0047] Specifically, the first pattern structure 31 is provided with a recess 311, and the recess 311 is recessed in the direction close to the center axis of the tire along the radial direction of the tire.

[0048] Specifically, the side wall pattern block 30 adopts a rugged style design, the side wall pattern block 30 is sharp like a dagger, and highlights the majestic style. The setting of the third steel sheet 33 effectively dissipates the heat generated by the tire during high-speed and long-distance driving, thereby prolonging the service life of the tire. In addition, the third steel sheet 33 can also cut the rubber of the tire to enhance the ability of the vehicle to pass through pits or steps, greatly improving the off-road performance of the tire in harsh road conditions. The three-dimensional side wall pattern block 30 makes the whole tire more wild, and at the same time enhances the rigidity of the shoulder of the tire, reduces the risk of damage to the side wall when resisting external impact, improves the traction on complex road conditions such as mud roads and gravel roads, and the side away from the side edge pattern block 20 of the first pattern structure 31 is an arc-shaped side, and the side close to the side edge pattern block 20 of the second pattern structure 32 is an arc-shaped side, thereby highlighting the power of the tire.

[0049] Specifically, the tire of the utility model adopts a three-layer cord structure, which can provide stronger load-bearing capacity, optimizes the side wall structure of the tire, and adopts low-heat-generating support rubber for design to reduce the heat generation of the tire bead during driving; in addition, due to the design of the side wall pattern block 30, the overall thickness of the side wall is increased, thereby improving the strength of the side wall, so as to cope with more severe road challenges.

[0050] Specifically, the application of the first steel sheet 81, the second steel sheet 82 and the third steel sheet 33 makes the cutting of the middle pattern block 10 and the side edge pattern block 20 more accurate, so that the tire can more evenly contact the ground during driving, thereby effectively avoiding abnormal wear of the tire pattern and improving the wear performance of the tire. At the same time, the groove on the tire is deep, and special off-road rubber is used, which improves the tear resistance and puncture resistance of the tire tread. In addition, the rubber formula has been newly upgraded, which not only improves the traction and braking performance of the tire, but also exhibits more excellent wear resistance and tear resistance than the first generation formula.

[0051] From the above description, it can be seen that the embodiments of the utility model realize the following technical effects:

[0052] The tire has excellent tread tear resistance and puncture resistance, high tire side support, excellent drainage and mud discharge effect, safety and wear resistance.

[0053] The tire comprises a middle pattern block 10, a side pattern block 20 and a tire side pattern block 30, the first longitudinal groove 40 is arranged between the side pattern block 20 and the middle pattern block 10, the second longitudinal groove 50 is arranged on the middle pattern block 10, a plurality of first transverse grooves 21 are arranged in the side pattern block 20, a plurality of first protruding blocks 41 are arranged on the groove bottom of the first longitudinal groove 40, a plurality of second protruding blocks 42 are arranged on the groove bottom of the first transverse groove 21, so that the stones are not easy to enter the first longitudinal groove 40 and the first transverse groove 21; a plurality of drainage grooves 13 are arranged in the second longitudinal groove 50, so that the drainage grooves 13 can quickly drain the water in the second longitudinal groove 50, which helps to improve the drainage and stone discharge performance of the tire, thereby solving the problem that the RT tire in the prior art has poor drainage and stone discharge performance when driving in bad road conditions, and the tire can effectively remove mud, ice and snow and stones, and the self-cleaning ability is improved.

[0054] For the sake of convenience, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0055] In addition, it needs to be explained that the words "first", "second" and the like are used to limit the parts, only for the convenience of distinguishing the corresponding parts, and if there is no further declaration, the above words have no special meaning, and therefore cannot be understood as a limitation on the protection scope of the present application.

[0056] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tire characterized by, The tire comprises: a middle pattern block (10), a side pattern block (20) and a sidewall pattern block (30), a first longitudinal groove (40) is arranged between the middle pattern block (10) and the side pattern block (20), a second longitudinal groove (50) is arranged on the middle pattern block (10), a plurality of first transverse grooves (21) are arranged in the side pattern block (20), the plurality of first transverse grooves (21) are arranged at intervals in the circumferential direction of the tire, one end of each of the first transverse grooves (21) extends to the shoulder of the tire, and the other end of each of the first transverse grooves (21) extends to the first longitudinal groove (40) and penetrates through; a plurality of first protrusions (41) are arranged at intervals in the extension direction of the first longitudinal groove (40) at the bottom of the first longitudinal groove (40), a plurality of second protrusions (42) are arranged at intervals in the extension direction of the first transverse groove (21) at the bottom of the first transverse groove (21), and a plurality of drainage grooves (13) are arranged in the second longitudinal groove (50), the plurality of drainage grooves (13) are arranged at intervals in the extension direction of the second longitudinal groove (50), and two ends of each of the drainage grooves (13) are connected to and penetrate through two opposite groove walls of the second longitudinal groove (50).

2. Tyre according to Claim 1, characterized in that, The tire has a tread center line (6) extending in the circumferential direction of the tire, the tread center line (6) divides the tread into two tread portions, the tread center line (6) divides the middle pattern block (10) into two first middle pattern sub-blocks (11), each of the tread portions is provided with a preset pattern, the preset pattern comprises the first middle pattern sub-block (11), the side pattern block (20) and the sidewall pattern block (30), the tire has a predetermined plane parallel to the central axis thereof, the intersection of the projection of the central axis of the tire and the tread center line (6) on the predetermined plane is the center of rotational symmetry, and the preset pattern on each of the tread portions is arranged in central symmetry with respect to the center of rotational symmetry.

3. Tyre according to Claim 2, characterized in that, Each of the tread portions comprises a plurality of tread sub-portions arranged in sequence in the circumferential direction of the tire, the length of each of the tread sub-portions in the circumferential direction of the tire is a preset pitch, and the preset pitches of any three adjacent tread sub-portions are different.

4. Tyre according to Claim 3, characterized in that, The preset pitch of each of the tread sub-portions is any one of three different pitch lengths, the three pitch lengths are a first pitch length s1, a second pitch length s2 and a third pitch length s3, respectively, in the plurality of tread sub-portions, at least one of the tread sub-portions has the first pitch length s1, at least one of the tread sub-portions has the second pitch length s2, and at least one of the tread sub-portions has the third pitch length s3, and s1:s2:s3=1.05:1.25:1.

45.

5. The tire of claim 2, wherein, The ratio between the ground contact area of the first middle pattern sub-block (11) and the ground contact area of the side pattern group block (20) is 3:2; the ratio of the sum of the ground contact area of the first middle pattern sub-block (11) and the ground contact area of the side pattern group block (20) in the total pattern ground contact area on the tread portion is 62.7% to 63.8%.

6. The tire according to claim 3, wherein, The ratio between the groove width of the first transverse groove (21) and the width of the tread sub-portion where the first transverse groove (21) is located is 0.11:1 to 0.13:

1.

7. The tire of claim 3, wherein, The ratio between the width of the side pattern group block (20) in the circumferential direction of the tire and the width of the tread sub-portion where the side pattern group block (20) is located is 0.17:1 to 0.25:

1.

8. The tire of claim 3, wherein, The ratio between the width of the middle pattern group block (10) in the circumferential direction of the tire and the width of the tread sub-portion where the middle pattern group block (10) is located is 0.334:1 to 0.352:

1.

9. The tire of claim 2, wherein, A plurality of first steel sheets (81) are arranged on the first middle pattern sub-block (11), the plurality of first steel sheets (81) are arranged at intervals in the circumferential direction of the tire, the extension direction of the first steel sheet (81) and the extension direction of the drainage groove (13) are arranged intersectingly; a plurality of second steel sheets (82) are arranged on the side pattern group block (20), the plurality of second steel sheets (82) and the plurality of first transverse grooves (21) are arranged alternately in the circumferential direction of the tire.

10. The tire of claim 2, wherein, The side pattern group block (30) comprises a plurality of first pattern structures (31) and a plurality of second pattern structures (32), the plurality of first pattern structures (31) and the plurality of second pattern structures (32) are arranged alternately in the circumferential direction of the tire; in the axial direction of the tire, the edge of the first pattern structure (31) away from the side pattern group block (20) is an arc-shaped edge, the edge of the second pattern structure (32) close to the side pattern group block (20) is an arc-shaped edge, and a third steel sheet (33) is arranged on the first pattern structure (31).

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