WO2022021531A1

WO2022021531A1 - Tire

Info

Publication number: WO2022021531A1
Application number: PCT/CN2020/113209
Authority: WO
Inventors: 耿鹏; 赖之立; 宋开云
Original assignee: 河北万达轮胎有限公司
Priority date: 2020-07-30
Filing date: 2020-09-03
Publication date: 2022-02-03
Also published as: CN111890846A

Abstract

A tire, which comprises a tire tread (1) and tire sidewalls (2) located on two sides of the tire tread (1). The tire tread (1) and the tire sidewalls (2) are integrally formed. Two first pattern block groups are arranged on the tire tread (1) in the axis direction of the tire tread, each first pattern block group comprising a plurality of first pattern blocks (3) distributed in the circumferential direction of the tire tread (1). Two adjacent first pattern blocks (3) in each first pattern block group are arranged in a concave arc shape along two opposite side faces of the tire tread (1) in the circumferential direction of the tire tread. The plurality of first pattern blocks (3) in the two first pattern block groups are spaced apart from each other, the plurality of first pattern blocks (3) in the two first pattern block groups all cross the central face of a tire, and the plurality of first pattern blocks (3) and the tire tread (1) are integrally formed. The tire has good muddy ground advancing stability.

Description

a tire

technical field

The present application relates to the field of tire manufacturing, and more particularly, to a tire.

Background technique

Tires are annular elastic rubber products assembled on various vehicles or machinery for ground rolling. The tire is usually installed on the metal rim, which can support the body, buffer the external impact, realize the contact with the road surface and ensure the driving performance of the vehicle.

In the related art, a tire includes a tread, the tread is provided with a plurality of blocks, and the surface of the blocks facing away from the tread is provided with sipes to improve the friction between the tire and the road surface. When the tire is running on the road, the mud is discharged through the gaps between multiple blocks and adjacent blocks to ensure the passability on the mud.

However, in the related art, there may be the following defects: when the tire in the related art runs on muddy ground, there are defects that the speed of mud removal is too fast and the wheel is easy to slip.

SUMMARY OF THE INVENTION

In order to improve the defect that a tire is easy to slip when driving in mud, the present application provides a tire.

A kind of tire provided by the application adopts the following technical scheme:

A tire, comprising a tread and sidewalls on both sides of the tread, the tread and the sidewall are integrally formed, the tread is provided with two groups of first block groups along its own axis direction, and the first block groups of each group are The block group includes a plurality of first blocks distributed along the circumferential direction of the tread, and two adjacent first blocks of each group of the first block groups facing each other in the circumferential direction of the tread are inward. The concave arc-shaped arrangement, the plurality of first blocks of the two groups of first blocks are spaced apart from each other, and the plurality of first blocks of the two groups of first blocks all cross the center surface of the tire, and the plurality of first blocks Integrated with the tread.

By adopting the above technical solution, during the running process of the tire, the plurality of first blocks can increase the contact friction force with the ground, so that the passability and stability are high when passing through a muddy road. The two adjacent first blocks of each first block group are designed in a concave arc shape, and the multiple first blocks of the first block groups of the two groups are spaced from each other. The mud speed is moderated. At the same time, the multiple first blocks of the first block group of the two groups all cross the center surface of the tire, so the mud discharge path is bent and the mud discharge distance increases, which further eases the center mud discharge speed, so that the tire has good muddy forward stability. performance.

Preferably, the surface of the first block is provided with a first sipe.

By adopting the above technical solution, the first sipe is provided on the surface of the first block, on the one hand, the contact area between the tire and the ground can be further increased, thereby increasing the friction force between the tire and the ground, thereby improving the passability of the tire. On the other hand, the design of the first sipe reduces the rigidity of the first block, improves the deformability of the first block, effectively balances the rigidity of the first block, and improves the product performance traction.

Preferably, a side of the first block group close to the sidewall is provided with a second block group, the second block group includes a plurality of second blocks distributed along the tread circumferential direction, and the second blocks are facing away from The direction of the first block extends to the position of the sidewall, and the second block is integrally formed with the tread and the sidewall.

By adopting the above technical solution, the design of the first block group makes the tread structure more uneven, so the contact area between the tire and the muddy ground is further increased, thereby greatly enhancing the passability of the tire in the muddy ground, and the second The block extends to the sidewall in a direction away from the first block, so during the turning process, the steering grip of the tire is improved, so that the steering stability is improved.

Preferably, a second sipe is formed on the surface of the second block.

By adopting the above technical solution, the setting of the second sipe increases the contact area between the second block and the muddy ground, thereby increasing the contact friction between the tire and the muddy ground, thereby improving the passing performance of the tire on the muddy ground . At the same time, the design of the second sipe can balance the rigidity of the second block, so that the deformability of the second block is enhanced, thereby improving the traction of the tire on muddy ground.

Preferably, a pattern rib is arranged between the first pattern block and the second pattern block, the pattern rib is fixedly connected to the tread, and the thickness of the pattern rib is lower than the thickness of the first pattern block and the second pattern block so as to be in the first pattern block and the second pattern block. A groove is formed between the first block and the second block.

By adopting the above technical solution, the arrangement of the pattern ribs enables the first pattern block and the second pattern block to form a whole, so that the rigidity of the first pattern block and the second pattern block is guaranteed, and the grooves can serve as auxiliary rows The action of mud further increases the contact area between the tire and the ground, thereby further improving the passability of the tire in the muddy ground.

Preferably, the side of the second block facing the sidewall is provided with a first pattern groove, and the first pattern groove is located at the intersection of the tread and the sidewall.

By adopting the above technical solution, the arrangement of the first lug groove enables the tire to have a good buffering effect when turning, and the contact area with the muddy road surface is increased, the contact friction force is improved, and the tire has excellent cornering control performance.

Preferably, the second block is provided with a second lug groove at a position close to the sidewall, and the opening of the second lug groove is directed to the side away from the center plane of the tire.

By adopting the above technical solution, the setting of the second lug groove further increases the contact area between the sidewall and the muddy ground when the tire turns, thereby further improving the steering stability of the tire.

Preferably, a bottom reinforcing rib is arranged between two adjacent second blocks in each group of the second block group, two ends of the bottom reinforcing rib are respectively fixed with the two second blocks, and the bottom reinforcing rib is connected to the two second blocks. The tread is integrally formed.

By adopting the above technical solution, the bottom reinforcing rib connects the two second blocks into a whole, which improves the integrity of the second block group, and can improve the traversing performance of the muddy ground when passing through the muddy ground.

Preferably, side reinforcing ribs are arranged between two adjacent second blocks of each second block group, the side reinforcing ribs are located at the position of the bottom reinforcing ribs close to the sidewall, and the two ends of the side reinforcing ribs are They are respectively fixed with two adjacent second blocks, and the side reinforcing ribs are integrally formed with the tread.

By adopting the above technical solution, the side reinforcement ribs further connect the adjacent second blocks into a whole, and since the side reinforcement ribs are located at the sidewalls, the lateral grip of the tire is improved when cornering, so that the tire can drive in a corner. Stability is guaranteed.

Preferably, tread reinforcements are integrally formed at the tread position, and the tread reinforcements are located on both sides of the tire center plane, with three adjacent first blocks and three second blocks on the same side of the tire center plane. As a group, one side of the first block in the middle position is connected with the adjacent first block through the tread reinforcement, and the other side of the first block in the middle position is connected with the adjacent second block. The blocks are connected by tread stiffeners.

By adopting the above technical solution, the tread reinforcement can connect the first block group and the second block group into a whole, thereby improving the rigidity of the entire first block group and the second block group, and the root of the first block And the root of the second block is strengthened, thereby slowing down the wear of the tire, improving the service life and reliability of the tire.

Description of drawings

1 is a schematic diagram of the overall structure of a tire according to an embodiment;

2 is a schematic side view of a tire according to an embodiment;

FIG. 3 is a partial enlarged schematic view of part A in FIG. 2 .

Description of reference numerals: 1. tread; 2. sidewall; 3. first block; 31, first sipe; 4, second block; 41, second sipe; 42, first groove; 43. The second pattern groove; 5. Pattern rib; 51. Groove; 6. Bottom reinforcing rib; 7. Side reinforcing rib; 8. Tread reinforcing rib.

detailed description

The present application will be further described in detail below in conjunction with accompanying drawings 1-3.

Referring to Figure 1, in one embodiment, a tire is provided. The tire includes a tread 1 , the tread 1 is wound around to form a closed annular shape, and sidewalls 2 are integrally formed on both sides of the tread 1 . The tread 1 is provided with two sets of first block groups, and each group of the first block groups includes a plurality of first blocks 3. The first blocks 3 are integrally formed with the tread 1. The blocks 3 are arranged at intervals along the circumferential direction of the tread 1, and the interval distances may be equal or unequal. In one embodiment, two adjacent first blocks 3 in each first block group are equally spaced. The position of the first block group close to the sidewall 2 is provided with a second block group, and the second block group includes a plurality of second blocks 4 distributed along the circumferential direction of the tread 1, and adjacent The spacing between the two blocks 4 may be equal or unequal. In one embodiment, the distance between two adjacent second blocks 4 in each second block group is equal. When passing through muddy ground, the first block group and the second block group can increase the contact area between the tire and the ground, thereby increasing the friction force between the tire and the ground, and improving the muddy ground passability of the tire of the present application .

As shown in FIG. 2 , the surface of the first block 3 is provided with a first sipe 31 , and the shape of the first sipe 31 may be any shape. In one embodiment, there are three first sipes 31 , and the same ends of the three first sipes 31 are connected and distributed radially on the surface of the first block 3 . The first sipe 31 can further increase the contact area between the tire and the muddy ground, thereby improving the passability of the tire.

As shown in FIG. 2 , a second sipe 41 is formed on the surface of the second block 4 , and the shape of the second sipe 41 can be any shape. In one embodiment, the second sipe 41 is in the shape of a broken line, and the extending direction of the second sipe 41 is from the sidewall 2 to the center of the tread 1 . The second sipe 41 can further increase the contact area between the tire and the muddy ground, thereby improving the passability of the tire.

As shown in FIG. 3 , in each first block group, the side walls of two adjacent first blocks 3 that are close to each other are in a concave arc shape, so that the two adjacent first blocks 3 are U-shaped. Font arrangement. The plurality of first blocks 3 of the two first block groups are staggered at intervals along the circumferential direction of the tread 1 , and one end of the first blocks 3 toward the center of the tread 1 all crosses the tire center plane. When passing through the muddy ground, as the tire rolls, the mud will be pressed into the gap between the adjacent first block groups, but since the end of the first block 3 crosses the center surface of the tire, the flow of mud is blocked by the first block. A block 3 is obstructed at the end, thereby extending the flow path of the silt. Therefore, the arrangement of the first block 3 can ease the mud discharge speed at the center of the tire, thereby increasing the friction between the tread 1 and the muddy ground, and the tire has good forward stability performance on muddy ground.

1 and 3 , the second block 4 extends to the sidewall 2 in a direction away from the first block 3 , and the second block 4 is integrally formed with the tread 1 and the sidewall 2 . On the ground, the second block 4 can not only improve the contact friction between the tire and the muddy ground when the tire is running straight, but also ensure the steering stability when turning.

1 and 3 , the side surface of the second block 4 away from the tread 1 is provided with a first groove 42 and a second groove 43 , wherein the first groove 42 is located at the intersection of the sidewall 2 and the tread 1 At the position, the first lug groove 42 is a semicircular groove formed by cutting the side corner of the second lug block 4 away from the center of the tire, and the second lug groove 43 is a second lug groove 43 facing the sidewall 2 of the second lug block 4 . The rectangular slot opened at the position. By arranging the first groove 42 and the second groove 43, the tire has a good buffering effect when turning on a muddy ground, and at the same time, the friction between the tire and the muddy ground is increased, and the turning maneuverability is improved.

As shown in FIG. 3 , a lug 5 integrally formed with the tread 1 is provided between the first block 3 and the adjacent second block 4 . The thickness of the pattern rib 5 is lower than the height of the first pattern block 3 and the second pattern block 4, so that a groove 51 is formed between the first pattern block 3 and the adjacent second pattern block 4, that is, the groove 51 is located in the pattern rib 5 is directly above. The arrangement of the pattern rib 5 enables the first pattern block 3 and the second pattern block 4 to form an integral body, thereby ensuring the rigidity of the first pattern block 3 and the second pattern block 4 . The grooves 51 can also play a role in assisting mud removal, further increasing the contact area between the tire and the ground. In addition, the grooves 51 are arranged in a non-linear manner to ease the mud discharge rate, thereby further improving the passability of the tire on muddy ground.

As shown in FIG. 3 , in each second block group, a bottom reinforcing rib 6 and a side reinforcing rib 7 are arranged between two adjacent second blocks 4 . Wherein, the bottom reinforcement rib 6 is located at the position of the tread 1 close to the sidewall 2 , and the side reinforcement rib 7 is located at the position of the sidewall 2 . The bottom rib 6 is integrally formed with the tread 1 and the second block 4 , and between the side rib 7 and the sidewall 2 and the second block 4 . The bottom reinforcing rib 6 connects the two second blocks 4 into a whole, which improves the integrity of the second block group, and can improve the traversing performance of the muddy ground when passing through the muddy ground. The side reinforcing ribs 7 connect the ends of the second block 4 close to the sidewall 2 in series, so as to improve the performance of traversing in the mud, and at the same time improve the grip and cornering stability of the tire when turning.

As shown in FIG. 3 , a tread rib 8 is integrally formed at the position of the tread 1 , and the tread rib 8 is used to connect the first block 3 or the second block 4 on the same side of the tire center surface. In one embodiment, three adjacent groups of first blocks 3 and second blocks 4 form a module. In each module, one side of the first block 3 at the middle position is fixed with the first block 3 on one side by the tread reinforcement 8, and the other side of the first block 3 at the middle position passes through the tread rib 8. The tread reinforcement rib 8 is fixed to the second block 4 on the other side, so that the overall rigidity of the entire first block group and the second block group is further improved, so the reliability of the tire is improved.

The implementation principle of a tire in the embodiment of the present application is: when the tire passes through a muddy road, the plurality of first blocks 3 and the second blocks 4 can increase the contact friction between the tire and the muddy ground, and because the center discharges mud The speed will be slowed down due to being blocked by the first block 3, and at the same time, the groove 51 between the first block 3 and the second block 4 will assist in discharging mud, increase the contact area with the muddy ground, and further improve the tire's durability. Passability on muddy ground. When turning, the first lug groove 42 and the second lug groove 43 increase the contact area between the tire and the muddy ground, thereby greatly improving the steering passability of the tire on the muddy ground.

The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of the present application. Inside.

Claims

A tire, comprising a tread (1) and sidewalls (2) located on both sides of the tread (1), the tread (1) and the sidewall (2) being integrally formed, and characterized in that: the tread (1) ) is provided with two groups of first block groups along its own axis direction, and each group of first block groups includes a plurality of first blocks (3) distributed along the circumferential direction of the tread (1), each group of The two adjacent first blocks (3) of one block group are arranged in concave arcs along the two sides facing each other in the circumferential direction of the tread (1), and the plurality of first block groups of the two groups are arranged in a concave arc shape. The first blocks (3) are spaced apart from each other, and the plurality of first blocks (3) of the two sets of first blocks all cross the center surface of the tire, and the plurality of first blocks (3) are integrated with the tread (1) forming.
The tire according to claim 1, wherein a first sipe (31) is formed on the surface of the first block (3).
A tire according to claim 1, characterized in that: a side of the first block group close to the sidewall (2) is provided with a second block group, and the second block group includes a side along the tread (1). ) a plurality of second blocks (4) distributed in the circumferential direction, the second blocks (4) extend to the sidewall (2) position in a direction away from the first blocks (3), and the second blocks (4) It is integrally formed with the tread (1) and the sidewall (2).
The tire according to claim 3, wherein a second sipe (41) is formed on the surface of the second block (4).
A tire according to claim 3, wherein a pattern rib (5) is arranged between the first pattern block (3) and the second pattern block (4), and the pattern rib (5) is connected to the tread. (1) Fixed connection, and the thickness of the rib (5) is lower than the thickness of the first block (3) and the second block (4), so that the thickness of the first block (3) and the second block (4) A trench (51) is formed therebetween.
A tire according to claim 3, characterized in that: the side of the second block (4) facing the sidewall (2) is provided with a first groove (42), the first groove (42) It is located at the intersection of the tread (1) and the sidewall (2).
A tire according to claim 3, characterized in that: a position of the second block (4) close to the sidewall (2) is provided with a second groove (43), the second groove (43) The opening is towards the side facing away from the center plane of the tire.
A tire according to claim 3, characterized in that a bottom reinforcing rib (6) is arranged between two adjacent second blocks (4) of each group of the second block groups, and the bottom is reinforced Both ends of the rib (6) are respectively fixed with the two second blocks (4), and the bottom reinforcing rib (6) is integrally formed with the tread (1).
A tire according to claim 8, characterized in that: a side reinforcing rib (7) is arranged between two adjacent second blocks (4) of each group of the second block group, and the side reinforcing rib (7) The bottom reinforcing rib (6) is located at the position close to the sidewall (2), and the two ends of the side reinforcing rib (7) are respectively fixed with two adjacent second blocks (4), and the side reinforcing rib (7) ) is integrally formed with the tread (1).
A tire according to claim 1, characterized in that: tread reinforcements (8) are integrally formed at the position of the tread (1), and the tread reinforcements (8) are located on both sides of the center surface of the tire to prevent The adjacent three first blocks (3) and the three second blocks (4) on the same side of the tire center surface form a group, and one side of the first block (3) at the middle position is connected to the adjacent first block (3). A block (3) is connected by a tread rib (8), and the other side of the first block (3) in the middle position and the adjacent second block (4) are connected by a tread rib ( 8) Connect.