CN216268494U

CN216268494U - Tire capable of improving abrasion and braking performance

Info

Publication number: CN216268494U
Application number: CN202122232337.3U
Authority: CN
Inventors: 金基典; 王雪艳
Original assignee: Zhongce Rubber Group Co Ltd
Current assignee: Zhongce Rubber Group Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-12
Anticipated expiration: 2031-09-15

Abstract

The application relates to the field of tire manufacturing, in particular to a tire capable of improving abrasion and braking performance. A tire for improving abrasion and braking performance is characterized in that a tread of the tire is composed of a plurality of pattern blocks, and grooves or knurls with the depth of 0.1 mm-2 mm are arranged on the pattern blocks in a driving direction; the grooves or the knurls are sealed in the pattern blocks, and steel sheets with the depth of 0.2 mm-5 mm are arranged on two sides of the grooves or the knurls respectively and are isolated from the main pattern blocks. The tire reduces barrel deformation (barrel deformation) generated by the non-contact side surface of the tire pattern when the tire pattern and the road surface are grounded, so that the grounding pressure is homogenized, the service life of the tire is prolonged, the friction energy between the tire pattern and the road surface is increased, and the safe operation is facilitated.

Description

Tire capable of improving abrasion and braking performance

Technical Field

The application relates to the field of tire manufacturing, in particular to a tire capable of improving abrasion and braking performance.

Background

The tire is a part which is in contact with the road surface when the automobile is running. The portion of the tire that contacts the road surface is called the tread. The tread is composed of a plurality of blocks. The tire tread blocks are non-compressive materials and can withstand loads, and the non-contact side of the ground contact surface can deform in a barrel depending on the poisson's ratio. In addition, the ground pressure at the ground leading edge (leading edge), the ground trailing edge (trailing edge), and the ground center portion are different due to the difference in rigidity within the block. Due to this barrel deformation, tangential force (shear stress) and ground pressure difference in the ground plane, a difference in frictional energy is generated. This difference in frictional energy causes a difference in wear rate, which causes abnormal wear. If such abnormal wear progresses, not only abnormal noise is generated, but also ride quality is deteriorated and the tire life is shortened.

Disclosure of Invention

In order to solve the above-mentioned problems, an object of the present invention is to provide a tire capable of reducing barrel deformation (barrel deformation) generated in a pattern non-contact side surface when a tire pattern contacts a road surface, uniformizing a contact pressure, improving a tire life, increasing friction energy with the road surface, and contributing to safe operation, and to improve abrasion and braking performance.

In order to achieve the above object, the present application adopts the following technical solutions:

a tire for improving abrasion and braking performance is characterized in that a tread of the tire is composed of a plurality of pattern blocks, and grooves or knurls with the depth of 0.1 mm-2 mm are arranged on the pattern blocks in a driving direction; the grooves or the knurls are sealed in the pattern blocks, and steel sheets with the depth of 0.2 mm-5 mm are arranged on two sides of the grooves or the knurls respectively and are isolated from the main pattern blocks.

Preferably, the length of the grooves or the knurls in the driving direction is 0.3-0.7 of the length of the blocks in the driving direction.

Preferably, the groove or knurl width is 0.4-0.6 of the block width.

Preferably, the grooves or knurls are located in the interval of 0.2-0.8 of the block driving direction length. Still more preferably, the grooves or knurls are located within the range of block travel direction lengths 1/4 to 3/4.

Preferably, the width of the steel sheet is 0.5-1.0 mm.

Preferably, the depth of the steel sheet is 2 to 10 times the depth of the grooves or knurls. More preferably, the depth of the groove or the knurl is 0.3-1.0 mm; the depth of the steel sheet is 2-4 mm. More preferably, the depth of the groove or the knurl is 0.4-0.6 mm; the depth of the steel sheet is 3.5-4.5 mm.

Preferably, the grooves or the knurls are positioned in the middle in the driving direction and the width direction, and the distances from the edges of the blocks in the driving direction and the width direction are equal respectively.

In the application, in order to minimize the barrel shape change of the pattern block and the road surface, a deformation absorption groove (groove or knurling) capable of absorbing the rubber volume deformed by the grounding pressure is formed in the grounding surface, and the shearing force (shear stress) generated in the front and the back of the grounding surface is reduced to the maximum extent. The block vertical direction ground contact pressure is proportional to the block rigidity. The more the block rigidity is from the center to the edge, the lower the vertical strength is, and therefore the higher the ground contact pressure is at the center. This application is through installing barrel-shaped change absorption groove at the central part of piece, makes the ground pressure in the decorative pattern piece even, makes the displacement minimizing of bucket deformation, reduces shearing force (shear stress) to improve wearing and tearing performance and brake performance.

Drawings

FIG. 1 is a schematic view showing barrel-shaped displacement in example 1. a is a pattern structure schematic diagram without adding grooves; b is a pattern structure diagram for increasing grooves; c is a barrel displacement diagram.

Fig. 2 is a schematic view of a pattern structure without adding grooves in example 2.

Fig. 3 is a schematic view of a pattern structure in which grooves are added in embodiment 2.

FIG. 4 is a schematic view of the pattern structure with additional knurling in example 3.

FIG. 5 is a shear force diagram generated at the heel and toe locations of the block at the ground engaging leading and trailing edges when tested against ground.

Detailed Description

The following detailed description of embodiments of the present application refers to the accompanying drawings.

Example 1

As shown in fig. 1(b), a groove 2 having a depth of 0.5mm is provided in the block 1 in the running direction, and the groove 2 is located in a block running direction length range 1/4 to 3/4, and has a length of 0.5 times the running direction length; fig. 1(b) shows that the barrel deformation displacement is reduced, compared to fig. 1 (a) without the groove 2, and fig. 1 (c) with the barrel deformation displacement.

Example 2

As shown in fig. 2 is a passenger tire pattern (a) having a circumference of 1.8 m, showing blocks 1 of one pitch when 60 pitches are used. As shown in fig. 3, the pattern (b) of the passenger car tire is provided with a groove 2 with a depth of 0.5mm on the block 1 in the driving direction, and the groove 2 is located in the interval of the block 1 from 1/4 to 3/4 in the driving direction and has a length of 0.5 times of the length in the driving direction; the groove 2 is sealed in the pattern block 1, and steel sheets with the depth of 4mm are respectively arranged on two sides of the groove 2 and isolated from the main pattern block 1. The width of the pattern block 1 is 30mm, the distance of the groove 2 from the edge of the pattern block 1 in the width direction is 8mm, and the width of the steel sheet is 0.7 mm.

Example 3

As shown in fig. 4, the pattern (c) of the passenger car tire is provided with knurls 4 on the block 1 in the driving direction, the knurls 4 are formed by a plurality of grooves with the depth of 0.5mm and the width of 0.5mm, and the knurls 4 are positioned in the interval of the length 1/4 to 3/4 in the driving direction of the block 1 and have the length of 0.5 times of the length in the driving direction; the knurls 4 are sealed in the pattern blocks 1, and steel sheets with the depth of 4mm are arranged on two sides of the knurls 4 and are isolated from the main pattern blocks 1. The width of the pattern block 1 is 30mm, the distance between the knurl 4 and the edge of the pattern block 1 in the width direction is 8mm, and the width of the steel sheet is 0.7 mm.

Example 4

The car tire pattern is characterized in that a groove 2 with the depth of 1mm is arranged on a driving direction pattern block 1, the groove 2 is positioned in a section of the driving direction length 1/4 to 3/4 of the pattern block 1, and the length is 0.5 times of the driving direction length; the groove 2 is sealed in the pattern block 1, and steel sheets with the depth of 4mm are respectively arranged on two sides of the groove 2 and isolated from the main pattern block 1. The width of the pattern block 1 is 30mm, the distance of the groove 2 from the edge of the pattern block 1 in the width direction is 8mm, and the width of the steel sheet is 0.7 mm.

Fig. 5 is a graph for testing the shearing force generated at the heel and toe portions of the block 1 at the leading edge (trailing edge) and the trailing edge (trailing edge) when the block is grounded. In the passenger tire b of example 2 and the passenger tire c of example 3 in which the barrel deformation absorbing grooves were installed, the shearing force was smaller than that of the passenger tire a.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present disclosure, including any person skilled in the art, having the benefit of the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tire for improving abrasion and braking performance is characterized in that grooves (2) or knurls (4) with the depth of 0.1-2 mm are arranged on the pattern blocks (1) in the running direction; the groove (2) or the knurl (4) is sealed in the pattern block (1), and steel sheets (3) with the depth of 0.2 mm-5 mm are respectively arranged on two sides of the groove (2) or the knurl (4) and are isolated from the main pattern block (1).

2. A tyre with improved wear and braking performance as claimed in claim 1, characterized in that the length of the grooves (2) or knurls (4) in the direction of travel is 0.3-0.7 times the length of the blocks (1) in the direction of travel.

3. A tyre for increasing wear and braking performance according to claim 1, characterized in that the width of the grooves (2) or knurls (4) is 0.4-0.6 times the width of the blocks (1).

4. A tyre with improved wear and braking performance according to claim 1, characterized in that the grooves (2) or knurls (4) are located in the interval 0.2-0.8 times the length of the block (1) in the direction of travel.

5. A tyre for increasing wear and braking performance as claimed in claim 4, characterized in that the grooves (2) or knurls (4) are located in the interval 1/4 to 3/4 of the block (1) running direction length.

6. A tyre with improved wear and braking performance as claimed in claim 1, characterized in that the width of the steel disc (3) is 0.5-1.0 mm.

7. A tyre with improved wear and braking performance as claimed in claim 1, characterized in that the depth of the steel disc (3) is 2-10 times the depth of the grooves (2) or knurls (4).

8. Tyre for increasing wear and braking performance according to claim 7, characterized in that the grooves (2) or knurls (4) have a depth of 0.3-1.0 mm; the depth of the steel sheet (3) is 2-4 mm.

9. Tyre for increasing wear and braking performance according to claim 7, characterized in that the grooves (2) or knurls (4) have a depth of 0.4-0.6 mm; the depth of the steel sheet (3) is 3.5-4.5 mm.

10. A tyre with improved wear and braking performance as claimed in claim 1, characterized in that the grooves (2) or knurls (4) are located in the middle in both the direction of travel and the width, the distance from the edge of the block (1) being equal in both the direction of travel and the width, respectively.