Tread pattern structure of light-duty radial tire

Abstract

The utility model relates to a tread pattern structure of a light-duty radial tire. The tread pattern structure comprises a tire tread, transverse patterns and longitudinal patterns, wherein the transverse patterns and the longitudinal patterns are arranged on the tire tread; the tire tread (1) is composed of ten equal segmented molds, a central longitudinal pattern block (5) is arranged in the center of the tread, S-groove-bottom longitudinal straight grooves (2), longitudinal zigzag pattern grooves (3) and longitudinal pattern blocks (6) which are in the same direction are evenly distributed in the direction from the center line in the circumferential direction of the tire tread to the two sides of the tire tread respectively, arc transition design is adopted for the groove bottoms, heat dissipation shoulder grooves are distributed in the shoulder portions of the tire, and the longitudinal pattern blocks (6) are arranged in the longitudinal straight grooves (2) and the longitudinal zigzag pattern grooves (3). Shoulder heat dissipation is improved, and shoulder cracks are avoided. Compared with the prior art, the tire adopting the pattern form has higher wear resistance, the pattern adopts the design of two longitudinal main grooves, two longitudinal zigzag main grooves and auxiliary heat dissipation shoulder grooves, and enlarged apex and super-strong framework materials are used, so that the probability of early damage of the tire caused by eccentric wear, non-uniform wear, stone clamping prevention and the like is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tire design, in particular to a tread pattern structure of a light-duty radial tire. Background Art

[0002] Tires are donut-shaped elastic rubber products used for ground contact and rolling, which are installed on various vehicles or machines. They are usually installed on metal rims, can support the vehicle body, buffer external impact, achieve contact with the road surface and ensure the driving performance of the vehicle. Tires are often used under complex and harsh conditions. They are subjected to various deformations, loads, forces, and high and low temperatures when driving, so they must have high load-bearing performance, traction performance and buffering performance. At the same time, they are also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used in tire production, which shows the ability of tires to consume rubber.

[0003] There are many different designs of tire treads. Their designs are based on the suitability for different purposes and road conditions. These aspects should also be considered when selecting tires. Tire treads play a very important role in the entire driving process. A well-designed tread can not only effectively save fuel, but also reduce the noise generated by the car during driving. At the same time, it can enhance the driving force, braking force and traction performance of the car on various harsh and slippery roads, thereby improving the safety of car driving.

[0004] There are generally several types of tire patterns:

[0005] (1) Straight groove pattern, also called ordinary pattern, is a pattern design with longitudinal grooves as the main feature.

[0006] Features: excellent operating stability, small rotation resistance, low noise, especially excellent drainage performance, not easy to slip laterally.

[0007] Applicable: vehicles used on flat roads: cars, trucks, and even airplanes.

[0008] Disadvantages: Poor drive and traction.

[0009] (2) Horizontal groove pattern: A pattern design dominated by horizontal grooves.

[0010] Features: The driving force, braking force and traction of the transverse groove pattern are particularly excellent, and its wear resistance is excellent.

[0011] Applicable: gravel roads and other harsh road conditions Vehicle types: mostly used in industrial and medium and short-distance vehicles such as bulldozers, excavators, loaders and other medium and heavy-duty trucks.

[0012] Disadvantages: loud noise.

[0013] (3) Vertical and horizontal groove pattern: Vertical and horizontal groove pattern is also called comprehensive pattern, which combines the design of straight groove type and horizontal groove type.

[0014] Features: It combines the advantages of both longitudinal and transverse groove patterns.

[0015] Applicable: bad road conditions.

[0016] Disadvantages: prone to abnormal wear.

[0017] (4) Block pattern: The pattern is arranged regularly in blocks.

[0018] Features: Good driving force and braking force, providing power to drive the car forward.

[0019] Applicable to: snowy, muddy and other roads.

[0020] Disadvantages: poor wear resistance and short mileage life.

[0021] The main light-duty radial tires on the market are driven on roads above paved roads. The main quality defects of tires are shoulder hollow, crown hollow and poor wear resistance. The tires have high requirements for tread patterns, low heat generation, good wear resistance, low noise, low rolling resistance, and novel appearance. Utility Model Content

[0022] The purpose of the utility model is to provide a tread pattern structure of a light-duty radial tire in order to overcome the defects of the above-mentioned prior art. The combination of longitudinal and transverse patterns realizes that the tire has good guiding, drainage, grip and anti-skid performance under high-speed driving. In addition, the constantly changing groove angle improves the traction and lateral force of the tire. The advantages of the utility model are: it has good wear resistance, can reduce abnormal wear, and ensure uniform wear. The tire using the pattern of the utility model reduces the probability of early damage to the tire caused by shoulder hollows, crown hollows and poor wear resistance. The pattern is arranged regularly, so it fails to effectively reduce the noise generated by the tire during driving.

[0023] The purpose of the utility model can be achieved through the following technical solutions:

[0024] The utility model aims to provide a tread pattern structure of a light-duty radial tire, including a tire tread and a pattern evenly distributed on the tire tread, wherein the pattern includes a transverse pattern and a longitudinal pattern; the tire tread is composed of ten equal parts of an active mold, the tire tread pattern pitch is 67 sections, and two longitudinal pattern blocks with the same direction are evenly distributed in the ten equal parts of the active mold to the upper and lower side plates, respectively, and the longitudinal pattern blocks are arranged in the same direction in a staggered manner, and the center of the tread is a central longitudinal pattern block, and along the center line of the circumferential direction of the tire tread to the two sides, the longitudinal straight grooves at the bottom of the S groove, the longitudinal zigzag grooves and the longitudinal pattern blocks with the same direction are evenly distributed, the groove bottom adopts an arc transition design, and the shoulder part of the tire is distributed with a shoulder groove to improve the heat dissipation of the shoulder and avoid shoulder cracks. Further, the transverse pattern includes a zigzag groove between the pattern blocks, and the longitudinal pattern includes a central longitudinal pattern block, a longitudinal straight groove at the bottom of the S groove, a longitudinal zigzag groove and a longitudinal pattern block.

[0025] Furthermore, a plurality of zigzag grooves are evenly distributed among the longitudinal pattern blocks on the tire tread, and the zigzag grooves between the pattern blocks gradually move downward in a two-step manner, and arc transition is adopted at the inner corner of each step. The radius of the arc of the first layer is 0.5mm, and the second layer adopts a full arc design. The downward height increases step by step from top to bottom, which are 1mm and 2mm respectively.

[0026] Furthermore, the tire tread is provided with two longitudinal straight grooves at the bottom of the S groove and two longitudinal zigzag pattern grooves on the edge in the same direction. The longitudinal straight grooves at the bottom of the S groove are 13mm wide and 13mm deep. The bottom of the pattern groove is S-shaped and 3.5mm wide, and a full arc transition is adopted; the longitudinal zigzag pattern grooves on both sides are 12mm wide and 13mm deep. The bottom of the pattern groove is 3.5mm wide, and the bottom of the groove adopts a full arc transition. The groove wall adopts a gradual angle design, and the draft angle range is 27°-13°; this design of four longitudinal grooves provides the tire with good drainage and heat dissipation, and can effectively prevent stones from being clamped.

[0027] Furthermore, the longitudinal straight groove at the S groove bottom is a longitudinal S groove bottom main groove, and the longitudinal zigzag pattern groove is a longitudinal zigzag main groove.

[0028] Furthermore, the same side of the tire tread (the same side here refers to the same side of the two sides of the central longitudinal pattern block, the two S-groove bottom longitudinal straight grooves are respectively located on both sides of the central longitudinal pattern block, and the two longitudinal zigzag grooves are respectively located on both sides of the central longitudinal pattern block) is connected between the S-groove bottom longitudinal straight grooves and the longitudinal zigzag grooves by the zigzag grooves between the pattern blocks, which provides better driving force and grip for the tire, and also improves the heat dissipation performance of the tire during driving.

[0029] Furthermore, shoulder grooves are evenly distributed downward from the two shoulders of the tire tread, with a groove depth of 1.5 mm, a total width of 5 mm, and a total length of 12 mm. The shoulder grooves include a second groove edge, a third groove edge, and two first groove edges connecting the second groove edge and the third groove edge. The two longitudinal first groove edges are inclined downward at an angle of 45° for 1.5 mm, the second groove edge is inclined downward at an angle of 135° for 1.5 mm, and the third groove edge is inclined downward at an angle of 75° for 1.5 mm, so as to improve heat dissipation of the shoulders and avoid shoulder cracks.

[0030] Furthermore, a plurality of exhaust holes (11) penetrating the mold are distributed around each transverse pattern and longitudinal pattern of the tire tread, so as to facilitate exhaust during vulcanization, prevent air pockets from causing rounded corners of the pattern and lack of rubber on the sidewall, promote rubber flow, and make the rubber vulcanization more uniform.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] 1) The tread pattern structure of the light-duty radial tire provided by the utility model includes a tire tread and a pattern evenly distributed on the tire tread; the tire tread is composed of ten equal parts of an active mold, with a central longitudinal pattern block in the center of the tread, and longitudinal pattern grooves (S-groove bottom longitudinal straight grooves), longitudinal zigzag grooves (longitudinal zigzag pattern grooves) and longitudinal pattern blocks with the same direction are evenly distributed along the center line of the tire tread circumference to both sides, and the groove bottom adopts an arc transition design. This design of four longitudinal grooves provides the tire with good drainage and heat dissipation. At the same time, the groove wall adopts a gradient angle design to effectively prevent stones from being clamped. Heat dissipation shoulder grooves are distributed on the shoulder of the tire to improve heat dissipation at the shoulder and avoid shoulder cracks;

[0033] 2) The tread pattern structure of the light-duty radial tire provided by the utility model adopts a combination of a longitudinal S-groove bottom straight groove and a longitudinal zigzag main groove design. The shoulder is a closed shoulder design, and shoulder grooves are evenly distributed under the shoulder, which reduces the probability of early tire damage caused by shoulder voids, crown voids and non-wear resistance. Reasonable pattern arrangement ensures uniform wear, effectively prevents uneven wear, and improves the tire wear resistance.

[0034] 3) The tread pattern structure of the light-duty radial tire provided by the utility model adopts a longitudinal S-groove bottom main groove and a longitudinal pattern block in the center of the tread, which makes the tire pattern more beautiful and has stronger high-speed performance. The pattern depth is more prominent than the stone-bumping design, the tire has better wear resistance, and can obtain a longer wear mileage.

[0035] 4) The tread pattern structure of the light-duty radial tire provided by the utility model has a side groove wall with a gradual angle design, which can effectively reduce the risk of groove cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1It is a structural schematic diagram of the tread pattern structure of a light-duty radial tire in the utility model.

[0037] Figure 2 It is a structural schematic diagram of one pitch of the tread pattern structure of a light-duty radial tire in the utility model.

[0038] Figure 3 It is a cross-sectional schematic diagram of the zigzag grooves between the pattern blocks of the tread pattern structure of the light-duty radial tire in the utility model.

[0039] Figure 4 It is a schematic diagram of the tread pattern structure of a light-duty radial tire in the utility model.

[0040] in:

[0041] 1-tire tread; 2-longitudinal straight groove at the bottom of S groove; 3-longitudinal zigzag groove; 4-zigzag groove between tread blocks; 5-central longitudinal tread block; 6-longitudinal tread block; 7-groove under shoulder; 8-first groove edge; 9-second groove edge; 10-third groove edge; 11-exhaust hole. DETAILED DESCRIPTION

[0042] The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. The features such as component models, material names, connection structures, etc. that are not clearly described in this technical solution are all regarded as common technical features disclosed in the prior art.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] It should be noted that, in the present utility model, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0045] Example

[0046] like Figures 1 to 3 As shown, in this embodiment, a tread pattern structure of a light-duty radial tire is provided, such as Figure 1 As shown, the utility model proposes a tread pattern structure of a light-duty radial tire, including a central longitudinal pattern block 5 and a longitudinal pattern block 6, and an S-groove bottom longitudinal straight groove 2 and a longitudinal zigzag pattern groove 3 located between the pattern blocks, both sides of the central longitudinal pattern block 5 are provided with S-groove bottom longitudinal straight grooves 2, the S-groove bottom longitudinal straight grooves 2 extend along both sides to form longitudinal pattern blocks 6, the longitudinal pattern blocks 6 extend along both sides to form longitudinal zigzag pattern grooves 3, and a plurality of zigzag grooves 4 between the pattern blocks are provided between the S-groove bottom longitudinal straight grooves 2 and the longitudinal zigzag pattern grooves 3.

[0047] The tire tread 1 has two S-bottom longitudinal straight grooves 2 and two longitudinal zigzag pattern grooves 3 on the same direction. The S-bottom longitudinal straight grooves 2 have a width of 13mm and a depth of 13mm. The groove bottom is S-shaped and 3.5mm wide, and a full arc transition is adopted. The longitudinal zigzag pattern grooves 3 on both sides have a width of 12mm and a depth of 13mm. The groove bottom is 3.5mm wide, and a full arc transition is adopted for the groove bottom. The groove wall adopts a gradient angle design, and the draft angle range is 27°-13°. This design of four longitudinal grooves provides the tire with good drainage and heat dissipation, and can effectively prevent stones from being clamped.

[0048] The tire tread has two longitudinal straight grooves 2 at the bottom of the longitudinal S grooves and two longitudinal zigzag grooves 3, the longitudinal straight grooves 2 at the bottom of the longitudinal S grooves and the longitudinal zigzag grooves 3 are connected by zigzag grooves 4 between the tread blocks, the zigzag grooves 4 between the tread blocks move down step by step in two-layer steps, and the inner corner of each step adopts an arc transition, the first layer of the arc radius is 0.5mm, and the second layer adopts a full arc design, and the downward height increases step by step from top to bottom, respectively 1mm, 2mm (such as Figure 3The cross-sectional schematic diagram shown in the figure provides better driving force and grip for the tire, while also improving the heat dissipation performance of the tire during driving.

[0049] like Figure 4 As shown, shoulder grooves 7 are evenly distributed downward from both shoulders of the tire tread 1, with a groove depth of 1.5 mm, a total width of 5 mm, and a total length of 12 mm. The shoulder grooves 7 include a second groove edge 9, a third groove edge 10, and two first groove edges 8 connecting the second groove edge 9 and the third groove edge 10, wherein the two longitudinal first groove edges 8 are inclined downward at an angle of 45° for 1.5 mm, the second groove edge 9 is inclined downward at an angle of 135° for 1.5 mm, and the third groove edge 10 is inclined downward at an angle of 75° for 1.5 mm, so as to improve heat dissipation of the shoulders and avoid shoulder cracks.

[0050] A plurality of exhaust holes 11 penetrating the mold are distributed around each transverse pattern and longitudinal pattern of the tire tread 1 to facilitate exhaust during vulcanization, prevent air pockets from causing rounded corners of the pattern and lack of rubber on the sidewall, promote rubber flow, and make the rubber vulcanization more uniform.

[0051] After adopting the tire pattern structure of the utility model, the ground contact pressure distribution is made more uniform, and the reasonable running surface design effectively prevents uneven wear and improves the wear resistance of the tire; the pattern form of the utility model has high wear resistance, and the tire reduces the probability of early damage to the tire caused by shoulder voids, crown voids and non-wear resistance.

[0052] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A tread pattern structure of a light-duty radial tire, characterized in that: It comprises a tire tread (1), and a transverse pattern and a longitudinal pattern arranged on the tire tread (1); The tire tread (1) is composed of ten equal parts of an active mold, with a central longitudinal pattern block (5) in the center of the tread, and longitudinal straight grooves (2) and longitudinal zigzag pattern grooves (3) with the same direction are evenly distributed in sequence along the circumferential center line of the tire tread (1) to both sides, and longitudinal pattern blocks (6) are distributed between the longitudinal straight grooves (2) and longitudinal zigzag pattern grooves (3) at the bottom of the S groove on the same side, and shoulder grooves (7) are distributed on the shoulder of the tire.

2. A tread pattern structure of a light-duty radial tire according to claim 1, characterized in that: The tire tread (1) has a pattern pitch of 67 sections, and two longitudinal pattern blocks (6) with the same direction are evenly distributed in the direction from the ten equal parts of the active mold to the upper and lower side plates, respectively. The longitudinal pattern blocks (6) are arranged in the same direction in a staggered manner.

3. A tread pattern structure of a light-duty radial tire according to claim 2, characterized in that: A plurality of zigzag grooves (4) between the pattern blocks are evenly distributed in the middle of the longitudinal pattern block (6).

4. A tread pattern structure of a light-duty radial tire according to claim 3, characterized in that: The zigzag grooves (4) between the pattern blocks gradually move downward in two-layer steps, and arc transition is adopted at the inner corner of each step. The radius of the arc of the first layer is 0.5mm, and the second layer adopts a full arc design. The downward height increases step by step from top to bottom, which are 1mm and 2mm respectively.

5. The tread pattern structure of a light-duty radial tire according to claim 1, characterized in that: The tire tread (1) is provided with two S-groove bottom longitudinal straight grooves (2) and two longitudinal zigzag grooves (3) in the same direction.

6. A tread pattern structure of a light-duty radial tire according to claim 5, characterized in that: The S-bottom longitudinal straight groove (2) has a groove width of 13 mm, a groove depth of 13 mm, an S-shaped groove bottom, a width of 3.5 mm, and a full arc transition; the longitudinal zigzag pattern groove (3) has a groove width of 12 mm, a groove depth of 13 mm, a groove bottom width of 3.5 mm, a full arc transition at the groove bottom, a groove wall with a gradually changing angle, and a draft angle range of 27°-13°.

7. The tread pattern structure of a light-duty radial tire according to claim 5, characterized in that: The longitudinal straight groove (2) at the bottom of the S groove of the tire tread (1) and the longitudinal zigzag groove (3) are connected by the zigzag groove (4) between the tread blocks.

8. The tread pattern structure of a light-duty radial tire according to claim 1, characterized in that: The two shoulders of the tire tread (1) are evenly distributed with shoulder grooves (7) below the shoulders, with a groove depth of 1.5 mm, a total width of 5 mm and a total length of 12 mm.

9. A tread pattern structure of a light-duty radial tire according to claim 8, characterized in that: The shoulder groove (7) comprises a second groove edge (9), a third groove edge (10) and two first groove edges (8) connecting the second groove edge (9) and the third groove edge (10), wherein the two longitudinal first groove edges (8) are inclined downward by 1.5 mm at an angle of 45°, the second groove edge (9) is inclined downward by 1.5 mm at an angle of 135°, and the third groove edge (10) is inclined downward by 1.5 mm at an angle of 75°.

10. The tread pattern structure of a light-duty radial tire according to claim 1, characterized in that: A plurality of exhaust holes (11) penetrating the mold are distributed around each transverse pattern and each longitudinal pattern.

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