Light truck tire

Abstract

The utility model provides a light truck tire, which belongs to the technical field of tires, a tread pattern comprises two longitudinal pattern main grooves and a plurality of central transverse cutter grooves, the two longitudinal pattern main grooves extend along the circumferential direction of the tire on two sides of a center line of a tread, the central transverse cutter grooves stretch across the two longitudinal pattern main grooves, the width of the top end of each central transverse cutter groove is 2.3-2.7 mm, the depth of each central transverse cutter groove is 6.5-7.5 mm, and the width of each central transverse cutter groove is 2.3-2.7 mm. The inclination angle of the groove wall of the central transverse cutter groove is 4-6 degrees, and the central transverse cutter groove divides the part between the two longitudinal pattern main grooves into a plurality of central pattern blocks which are arranged in the circumferential direction and are of irregular polygon structures. According to the light truck tire disclosed by the utility model, the gripping performance and the control stability are improved, the light truck tire has good durability and abrasion resistance, the tear resistance of the tire under a heavy load working condition is improved, the traveled distance of the tire is increased, the service life of the tire is prolonged, and the cost of frequently replacing the tire is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tires, and in particular relates to a light truck tire suitable for minivans, ordinary small commercial vehicles and small vans. Background Art

[0002] With the continuous development of the automotive industry, people's performance requirements for vehicles of different uses are becoming increasingly higher. The basic performance of ordinary general-purpose tires can no longer meet people's high-performance demands for vehicles. With the fierce competition in the automotive industry, the market for small commercial vehicles such as micro vans and light trucks has gradually decreased, and their tire market has not received much attention from most tire companies. As a result, the majority of micro vans and light trucks on the market use ordinary passenger car tires.

[0003] However, since ordinary passenger car tires have a shallow tread pattern, poor wear resistance, and a relatively short service life, this increases the cost of use for the majority of small commercial vehicle users of microvans and light trucks. Moreover, the ordinary passenger car tires used in microvans and light trucks have limited load-bearing capacity and cannot withstand excessive weight, making them prone to tire blowouts and other faults, which may affect transportation efficiency.

[0004] Therefore, the utility model proposes a light truck tire suitable for minivans, ordinary small commercial vehicles and small vans. Utility Model Content

[0005] The details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0006] The utility model proposes a light truck tire, which solves the technical problems of poor wear resistance, relatively short service life, increased use cost due to frequent replacement, and poor load and tear resistance of tires used in existing micro-van light truck models. The utility model improves the grip performance and handling stability, has good durability and wear resistance, improves the tear resistance of the tire under heavy load conditions, increases the mileage and service life of the tire, and reduces the cost of frequent tire replacement.

[0007] On the one hand, the utility model discloses a light truck tire, wherein the tread pattern includes two longitudinal pattern main grooves extending along the tire circumference on both sides of the tread centerline, and a plurality of central transverse sipes spanning between the two longitudinal pattern main grooves, wherein the top width of the central transverse sipes is 2.3-2.7 mm, the depth of the central transverse sipes is 6.5-7.5 mm, the groove wall inclination angle of the central transverse sipes is 4°-6°, and the central transverse sipes divide the space between the two longitudinal pattern main grooves into a plurality of central pattern blocks with an irregular polygonal structure arranged along the circumference.

[0008] In some embodiments, the main groove of the longitudinal pattern has a zigzag structure, the fold line angle of the main groove of the longitudinal pattern is 127°-129°, and the bending point of the main groove of the longitudinal pattern adopts an arc structure transition.

[0009] In some embodiments, the depth of the longitudinal pattern main groove is 8.5-10.5 mm, the width of the groove top of the longitudinal pattern main groove is 8-9 mm, and the inclination angle of the groove wall of the longitudinal pattern main groove is 75°-85°.

[0010] In some embodiments, a central steel sheet with a three-fold line structure is provided on the central pattern block, with both ends of the central steel sheet passing through the central pattern block, and the two fold angles of the central steel sheet are both 130°-135°.

[0011] In some embodiments, a plurality of shoulder transverse grooves are provided in the shoulder region between the longitudinal pattern main groove and the tread edge, and the shoulder transverse grooves divide the shoulder region into a plurality of shoulder blocks arranged along the circumferential direction.

[0012] In some embodiments, two shoulder annular grooves are provided on the shoulder pattern block, the depth of each shoulder annular groove is 4-7 mm, and the groove wall inclination angle of each shoulder annular groove is 84°-86°.

[0013] In some embodiments, one end of each shoulder annular groove close to the longitudinal pattern main groove is connected to the first shoulder fine steel sheet, and one end of the first shoulder fine steel sheet extends to the longitudinal pattern main groove.

[0014] In some embodiments, a second shoulder thin steel sheet is provided between the two shoulder annular grooves, and one end of the second shoulder thin steel sheet extends to the adjacent longitudinal pattern main groove, and the other end is a closed structure.

[0015] In some embodiments, the tread pattern is of variable pitch design, including three unequal pattern pitches randomly arranged along the circumference of the tread.

[0016] In some embodiments, the tire is a double-layer polyester high-upturn structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The main tread blocks of the light truck tire of the utility model are central tread blocks of irregular polygonal structure arranged longitudinally in a central row, which enables the tire to maintain good handling performance and grip, and improves the high-speed driving ability and mileage of the tire; the central transverse sipes arranged transversely in the central tread blocks can effectively cut through the water film, ensuring the grip performance of the tire.

[0019] (2) The longitudinal main groove of the light truck tire of the utility model has a wavy structure, and the bending point adopts an arc structure transition, which not only enhances traction but also takes into account the grip and drainage, thereby improving the wetland drainage performance of the tire; the longitudinal main groove is deepened and widened to thicken the tread, prevent the tread groove from cracking, and is puncture-resistant, thereby increasing the service life of the tire.

[0020] (3) The wide shoulder tread block structure of the light truck tire of the utility model improves the robustness of the tread blocks, enhances the durability of the tire and the tear resistance of the shoulder under heavy load conditions, enhances the steering rigidity during driving, and improves the steering performance.

[0021] (4) The shoulder tread blocks of the light truck tire of the present invention are provided with shoulder annular grooves, which can accelerate the heat dissipation of the shoulder, so that the tire has good heat dissipation performance, thereby improving the durability of the tire; a plurality of shoulder fine steel sheets are also provided on the shoulder tread blocks, so that the shoulder ground contact force is uniform, the driving is smoother, the wear is more uniform, and the wear performance is improved.

[0022] (5) The utility model light truck tire adopts a double-layer polyester high-turn-up structure to improve the sidewall rigidity and the bead strength, reduce the occurrence of bulging symptoms, and at the same time improve the steering stability and controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of a tread pattern structure of a light truck tire provided by an embodiment of the present utility model;

[0025] Description of the accompanying drawings: 1. Longitudinal pattern main groove, 2. Central pattern block, 3. Shoulder pattern block, 4. Central transverse sipe, 5. Central steel sheet, 6. Shoulder transverse groove, 7. Shoulder annular groove, 8. First shoulder fine steel sheet, 9. Second shoulder fine steel sheet. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of such features. The term "longitudinal" refers to the direction in which the tire rolls; the term "transverse" refers to the direction perpendicular to the mid-plane of the tire.

[0028] The embodiment of the present utility model provides a light truck tire suitable for vans, ordinary small commercial vehicles and small vans. It has the advantages of load resistance, good quietness and comfort, low tire rolling resistance, fuel saving and energy saving, and effectively improves the performance of the tire on wet and slippery roads and reduces the lateral slip of the tire. Figure 1 Schematic diagram of the tread pattern structure of a light truck tire according to an embodiment of the present utility model. Figure 1 As shown, the tread pattern of the light truck tire of the present invention features a symmetrical design. The tread pattern includes two longitudinal main grooves 1 extending circumferentially along the tire's centerline, and a plurality of central transverse sipes 4 spanning between the two longitudinal main grooves 1. The top width of the central transverse sipes 4 is 2.3-2.7 mm, the depth of the central transverse sipes 4 is 6.5-7.5 mm, and the groove wall inclination angle of the central transverse sipes 4 is 4°-6°. This structural design of the central transverse sipes 4 effectively cuts through water film, ensuring the tire's grip. The central transverse sipes 4 divide the space between the two longitudinal main grooves 1 into a plurality of central pattern blocks 2 with an irregular polygonal structure arranged circumferentially, forming a central pattern block array. This ensures the tire maintains excellent handling performance. The continuous longitudinal arrangement of the polygonal central pattern blocks 2 provides excellent grip, improving the tire's high-speed capability and mileage.

[0029] The longitudinal main grooves 1 of the light truck tire tread pattern of this utility model are zigzag in structure, with a zigzag angle of 127°-129°. The bends of the longitudinal main grooves 1 are smoothly arc-shaped, giving the overall structure of the longitudinal main grooves 1 a wave-like extension. This enhances traction while also balancing drainage and grip, ensuring high drainage and wetland drainage performance, ensuring comprehensive performance for all-weather road use. The main depth of the longitudinal main grooves 1 is 8.5-10.5mm, the top width is 8-9mm, and the groove wall inclination angle is 75°-85°. The deeper and wider longitudinal main grooves 1 thicken the tread, prevent cracking, and provide puncture resistance, thereby extending the tire's service life. The uniform groove design improves tread wear and service life, increasing mileage.

[0030] The central pattern block 2 of the tread pattern of the light truck tire of the present invention has a hexagonal pattern block structure. Two parallel central steel sheets 5 with a three-fold line structure are provided on the central pattern block 2, and both ends of the central steel sheet 5 pass through the central pattern block 2. The angles of the two folding angles of the central steel sheet 5 are both 130°-135°, the thickness of the central steel sheet 5 is 0.7-1.1 mm, and the depth of the central steel sheet 5 is 4.0-5.0 mm. By providing the above-mentioned steel sheets on the central pattern blocks 2 arranged in a row longitudinally, the water film can be effectively cut, the friction coefficient of the tire is increased, and the grip performance of the tire is improved.

[0031] The light truck tire of this utility model features a plurality of shoulder transverse grooves 6 in the shoulder region between the longitudinal main groove 1 and the tread edge. These grooves divide the shoulder region into a plurality of circumferentially arranged shoulder blocks 3, forming a shoulder block array. The wider shoulder blocks 3 enhance the robustness of the blocks, improving tire durability and shoulder tear resistance under heavy loads, enhancing steering rigidity, and improving steering performance. The shoulder transverse grooves 6 have a top width of 8.0-9.0 mm, a depth of 7.0-8.0 mm, and an inclination angle of 75°-85°, enhancing the tire's stability on rainy roads.

[0032] Two shoulder annular grooves 7 are arranged parallel to the shoulder blocks 3 of the tread pattern of the light truck tire of the present invention. The depth of each shoulder annular groove 7 is 4-7 mm, and the groove wall inclination angle of each shoulder annular groove 7 is 84°-86°. The provision of the two shoulder annular grooves 7 can accelerate the heat dissipation in the shoulder area of ​​the tire, so that the tire has good heat dissipation performance, thereby improving the tire's durability. Each shoulder annular groove 7 adopts a semi-closed structure design. The end of the shoulder annular groove 7 near the longitudinal pattern main groove is connected to a first shoulder fine steel plate 8, and one end of the first shoulder fine steel plate 8 extends to the longitudinal pattern main groove 1. The semi-closed shoulder annular groove 7 is supplemented by the first shoulder fine steel plate 8, which plays a role in strengthening the tread structure while taking into account drainage. A second shoulder fine steel plate 9 is arranged between the two shoulder annular grooves 7. One end of the second shoulder fine steel plate 9 extends to the adjacent longitudinal pattern main groove 1, and the other end is a closed structure. The second shoulder steel blades 9 evenly divide the shoulder blocks 3, ensuring even contact force on the shoulder area, smoother driving, more uniform wear, and improved tire wear performance. The provision of shoulder annular grooves 7 and shoulder steel blades on the shoulder blocks 3 ensures sufficient rigidity while maintaining a certain degree of flexibility, resulting in appropriate shoulder rigidity and improved tire steering performance.

[0033] The tread pattern of the light truck tire of the present invention is a variable pitch design, including three unequal pattern pitches arranged irregularly along the circumference of the tread, and adopts three unequal pitch circumferential sections of L, M and S to be staggered, among which the L circumferential section length is 32-36mm, the M circumferential section length is 28-31mm, and the S circumferential section length is 25-27mm.

[0034] The utility model light truck tire adopts a double-layer polyester high-turn-up structure, which improves the sidewall rigidity and the bead strength, reduces the occurrence of bulging symptoms, and improves the steering stability and controllability of the tire.

[0035] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A light truck tire, characterized by: The tread pattern includes two longitudinal pattern main grooves extending along the circumference of the tire on both sides of the tread centerline, and several central transverse sipes spanning the two longitudinal pattern main grooves. The top width of the central transverse sipes is 2.3-2.7mm, the depth of the central transverse sipes is 6.5-7.5mm, and the groove wall inclination angle of the central transverse sipes is 4°-6°. The central transverse sipes divide the space between the two longitudinal pattern main grooves into multiple central pattern blocks with irregular polygonal structures arranged along the circumference.

2. The light truck tire according to claim 1, wherein: The main groove of the longitudinal pattern has a zigzag structure, the fold line angle of the main groove of the longitudinal pattern is 127°-129°, and the bending point of the main groove of the longitudinal pattern adopts an arc structure transition.

3. The light truck tire according to claim 1, wherein: The depth of the main groove of the longitudinal pattern is 8.5-10.5 mm, the width of the groove top of the main groove of the longitudinal pattern is 8-9 mm, and the inclination angle of the groove wall of the main groove of the longitudinal pattern is 75°-85°.

4. The light truck tire according to claim 1, wherein: A central steel sheet with a three-fold line structure is provided on the central pattern block. Both ends of the central steel sheet pass through the central pattern block, and the two folding angles of the central steel sheet are both 130°-135°.

5. The light truck tire according to claim 1, characterized in that: A plurality of shoulder transverse grooves are provided in the shoulder area between the longitudinal pattern main groove and the tread edge, and the shoulder transverse grooves divide the shoulder area into a plurality of shoulder pattern blocks arranged along the circumferential direction.

6. The light truck tire according to claim 5, characterized in that: Two shoulder annular grooves are provided on the shoulder pattern block, the depth of each shoulder annular groove is 4-7 mm, and the groove wall inclination angle of each shoulder annular groove is 84°-86°.

7. The light truck tire according to claim 6, characterized in that: One end of each shoulder annular groove close to the longitudinal pattern main groove is connected to the first shoulder fine steel sheet, and one end of the first shoulder fine steel sheet extends to the longitudinal pattern main groove.

8. The light truck tire according to claim 6, characterized in that: A second shoulder thin steel sheet is arranged between the two shoulder annular grooves, and one end of the second shoulder thin steel sheet extends to the adjacent longitudinal pattern main groove, and the other end is a closed structure.

9. The light truck tire according to any one of claims 1 to 8, characterized in that: The tread pattern is a variable pitch design, including three types of unequal pattern pitches arranged irregularly along the circumference of the tread.

10. The light truck tire according to any one of claims 1 to 8, characterized in that: The tire is a double-layer polyester high-turn-up structure.

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