CN114905893A - Tire pattern noise reduction structure - Google Patents

Abstract

The invention mainly provides a noise reduction structure of a tire pattern. A plurality of main grooves are extended on the tread surrounding the tire circumferential direction, and a plurality of transverse grooves are extended along the tire axial direction. The main groove and the transverse groove divide the tread. It is a number of blocks, each main groove can be parallel to the tire circumferential direction, or arranged in a diagonal line with a set angle with the tire circumferential direction, and each lateral groove is also arranged in a diagonal line with a set angle and connects the adjacent ones. The main groove of the tread is equipped with a bell-shaped groove, and a shoulder decorative groove is arranged on the shoulders on both sides of the tread, the lateral groove, the main groove and the blocks between the shoulders on both sides; The pattern blocks cut from the main groove and the transverse grooves with different oblique angles ensure that the tire still retains sufficient driving force in the later period of use, improve the tire handling performance and prevent abnormal appearance in the later period of wear, and make the pattern block When squeezed, it produces mutual traction, which improves the performance of driving force and block rigidity, and improves the noise problem.

Description

Tire pattern noise reduction structure

technical field

The present invention relates to an arrangement structure of coarse grooves and fine grooves in tread patterns, particularly a design that is concavely arranged on the tread of the tire, and the tread is cut into blocks by the intersection of straight grooves and transverse grooves.

Background technique

Most vehicles move the car body forward or backward through the rolling of the wheels, and the tire is the medium between the ground and the car body. It uses the shock-absorbing properties of plastic materials to cushion the car body during travel. The impact from the ground improves ride comfort.

The tire must be supportive, and high-strength plies, belt layers or metal belts are used to embed components such as high-strength plies in the tire. The plies are mostly made of glass fiber or polyamide fiber; the tread of the tire is provided with several patterns to increase the Drainage and grip.

For truck and bus tires, the tread pattern is the main factor affecting the performance of the tire. The tread pattern is designed as a block pattern, which can increase the driving force, and each main groove is a zigzag groove, which can increase the rigidity of the block during cornering. The global awareness of environmental protection is gradually rising, and it is gradually promoting and developing towards energy saving and green energy. When the tire is running, the air enters the groove and is squeezed to cause noise, especially the block pattern is the most violent, so it is necessary to meet the driving force. At the same time, the noise reduction effect is achieved through special pattern design and size restrictions.

The "Tire and its tread" of Taiwan Invention Bulletin No. 481624 discloses a tire tread, which is provided with a central longitudinal groove and a pair of longitudinal lateral grooves on both sides of the equatorial plane. A row of central blocks and a row of middle blocks. The central block portion and the central block portion are separated by a pair of peripheral sipes, while the central block portion and the central block portion are peripherally separated by a plurality of very deep transverse grooves. The pattern of the tread includes intermediate blocks arranged in staggered rows of blocks on the periphery relative to the center, and rows of central blocks arranged staggered on the periphery with respect to each other; the lateral grooves have centerlines, which are opposite to each other. A plane perpendicular to the equatorial plane is inclined in the opposite direction at an angle α; according to the embodiment of the pattern in Figure 2 of this case, there is a central block near the left of the equatorial plane and a middle block on the right of the equatorial plane. There is a substantially straight line "a-a" between, and a straight line "b-b" between a middle block on the left side of the equatorial plane and a center block on the right side of the equatorial plane, the straight line state "a-a" "b-b" repeats in Above the entire tread, the centerline is along "a-a" and below, with a, a' indicating the sipes of the blocks that are aligned in a straight line, after the tire rotates, these blocks a, a' contact the ground and the block inserted with it and gripped will maintain contact with the ground, denoted by b-b', then, along the block a, a' half the length L0 greater, the grip line of the tire It is no longer in contact with the blocks b, b' inserted together, but hits the transverse grooves 27, 28, so that the grip line of the tire along the middle zone "E" does not hit the center and middle row blocks at the same time body, but only hits two of them at the same time to reduce noise from tread and ground impact.

Another Chinese Taiwan invention No. I339625 "Heavy-duty radial tire" provides a heavy-duty tire with a pattern block pattern with an area ratio of 55% to 57%, and the pattern block pattern is formed by vertical main grooves and horizontal grooves. The grooves are divided into five or six block rows; each block (B) is divided into two circumferential block pieces by transverse thin grooves. When the rated load is loaded, each block that is grounded in the ground plane The product of the number of ground blocks in a row (N) and the circumferential rigidity (G (unit N/mm)) of the blocks (B) of each block row is defined as the block row rigidity (RG) of each block row. (=N×G)), the value (P(=RG/M)) obtained by dividing the rigidity (RG) of each block row by the rated load (M (unit kN)) is set in the range of 7.5~16.0, Therefore, necessary traction performance can be ensured, and block chipping can be suppressed more reliably.

SUMMARY OF THE INVENTION

The invention discloses a noise reduction structure of a tire pattern. The tread surrounding the tire extends a plurality of main grooves in the tire circumferential direction, and extends a plurality of transverse grooves along the tire axial direction. The main groove and the transverse groove divide the tread into For a number of blocks, each main groove can be parallel to the tire circumferential direction, or arranged in an oblique line with a set angle with the tire circumferential direction, and each lateral groove is also arranged in an oblique line with a set angle and connects the adjacent ones. The main groove is arranged on the shoulders on both sides of the tread, the lateral groove, the main groove and the blocks between the two shoulders are provided with a shoulder decorative groove.

The present invention has a Z-shaped middle decorative groove in the middle of the blocks surrounded by the first main groove, the second main groove and the first lateral groove, and at the same time, in the middle of the block surrounded by the second main groove, the third main groove and the second lateral groove There is a Z-shaped middle decorative groove in the middle of the pattern block.

In the present invention, two ends of the Z-shaped intermediate decorative groove between the second main groove and the third main groove and the middle of the block surrounded by the second lateral groove are provided at the intersections of the second main groove and the third main groove. Bell grooves.

The beneficial effects of the present invention are:

The main purpose of the present invention is to provide a noise-reducing structure of the tire tread, the tread block and the groove portion are defined by angles, so as to reduce the generation of noise.

The second purpose of the present invention is to provide a structure for reducing noise in the tire pattern. The middle decorative groove is designed in a Z shape, so that the blocks can be pulled together when they are squeezed, and in addition to improving the driving force and the rigidity of the blocks, etc. In addition to performance, it also improves the existing noise problem that is annoying to users, and enhances its noise reduction effect.

Another object of the present invention is to provide a tire pattern noise reduction structure, the pattern block is designed with a bell-shaped groove at the turning point to maintain the rigidity of the pattern block, ensure that the tire still retains sufficient driving force in the later period of use, and improve the handling performance of the tire. Prevents abnormal appearance after wear and maintains controllability.

Description of drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

1 is a perspective view of a partial pattern of a tire according to a preferred embodiment of the present invention;

Fig. 2 is a partial enlarged perspective view of a tire according to a preferred embodiment of the present invention;

FIG. 3 is an expanded view of a partial pattern of a tire according to a preferred embodiment of the present invention;

4 is a perspective view of a partial pattern of a tire according to a preferred embodiment of the present invention;

FIG. 5 is a partial cross-sectional view of a tire in the circumferential direction of a preferred embodiment of the present invention;

6 is a front view of a partial pattern of a tire according to a preferred embodiment of the present invention;

Figure 7 is a partial enlarged view of the bell-shaped pattern of the present invention.

Description of reference numerals

Tread 10

main groove 11

First main groove 111

Second main groove 112

Third main groove 113

Horizontal groove 12

The first horizontal groove 121

Second horizontal groove 122

The third horizontal groove 123

Pattern block 13

Shoulder 14

Shoulder decorative groove 15

Middle decorative groove 16, 161

Bell groove 17

tire 50

The first corner A1

Second folded corner A2

The third corner A3

Angle A4

Fifth corner A5

Main groove width W

Circumferential width W1

Axial width h1

Outside chamfer R1

Inside chamfer R2.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can do so without departing from the connotation of the present invention. Similar promotion, therefore, the present invention is not limited by the specific embodiments disclosed below.

First, please refer to FIG. 1 to FIG. 6 , which is a first preferred embodiment of a tire pattern noise reduction structure provided by the present invention. The tread 10 surrounding the surface of the tire 50 extends a plurality of main parts in the circumferential direction of the tire 50 . The groove 11 extends a plurality of lateral grooves 12 along the axial direction of the tire 50. The main groove 11 and the lateral groove 12 divide the tread 10 into several blocks 13. Each main groove can be parallel to the circumferential direction of the tire 50, or parallel to the tire 50 The circumferential direction is arranged in an oblique line with a set angle, and the lateral grooves 12 are also arranged in an oblique line with a set angle and connect the adjacent main grooves 11. On the tread 10, the third lateral groove 123 , the third main groove 113 and the blocks 13 between the shoulders 14 on both sides include a shoulder decorative groove 15 .

Please continue to refer to FIGS. 1 to 6 , the tread 10 of the present invention surrounds the surface of the tire 50 , the tread 10 extends a main groove 11 in the circumferential direction of the tire 50 , and a lateral groove 12 extends along the axial direction of the tire 50 . The main groove 11 and the lateral groove 12 divide the tread 10 into a plurality of blocks 13. The main groove 11 is the first main groove 111, the second main groove 112, the second main groove 112, the first main groove 111, the second main groove 112, The third main groove 113 , the lateral groove 12 includes a first lateral groove 121 , a second lateral groove 122 , and a third lateral groove 123 .

The first main grooves 111 are parallel to the tire 50 circumferential direction, the second main grooves 112 and the tire 50 circumferential direction are arranged in a zigzag oblique line at a predetermined angle, and the third main grooves 113 are set to the tire 50 circumferential direction. The included angle is zigzag oblique arrangement, the first lateral groove 121 connects the first main groove 111 and the second main groove 112, the first lateral groove 121 and the first bending angle A1 in the tire axial direction are 15- 20 degrees, the second lateral groove 122 connects the second main groove 112 and the third main groove 113, the second lateral groove 122 and the second bending angle A2 in the axial direction of the tire 50 is 15-20 degrees, the third lateral groove 122 is 15-20 degrees. The grooves 123 are in a V shape connecting the third main groove 113 to the shoulders 14 on both sides of the tread 10 , the third lateral groove 123 , the third main groove 113 and the blocks 13 between the shoulders 14 on both sides. A shoulder decorative groove 15 is provided thereon.

As shown in FIG. 3 , which is a first preferred embodiment of a tire pattern noise reducing structure provided by the present invention, the third lateral grooves 123 form a V-shaped angle to connect the third main groove 113 to the tread 10 . The shoulders 14 on both sides, in which the angle of the V-shaped included angle A4 can be 160-175 degrees. The design of the V-shaped included angle is mainly to reduce the area of the block hitting the ground during rolling to reduce noise, and the purpose of setting the obtuse angle To maintain block rigidity.

Please refer to FIG. 3 again, which is a first preferred embodiment of a tire pattern noise reduction structure provided by the present invention. The second main grooves 112 and the tire 50 are arranged in a zigzag oblique line at a predetermined angle in the circumferential direction. The angle of the third folding angle A3 may be 10-15 degrees; the width of the second main groove 112 is W, and its width is 4-9 mm.

Please continue to refer to FIG. 3 and FIG. 7 , which are the first preferred embodiment of a tire pattern noise reduction structure provided by the present invention. The third main groove 113 and the tire 50 circumferentially form a zigzag shape with a predetermined angle. The angle of the fifth folding angle A5 arranged obliquely may be 10-15 degrees; the width of the third main groove 113 is W, and its width is 4-9 mm.

In FIGS. 3 and 4 , the first preferred embodiment of a tire pattern noise reduction structure provided by the present invention, the third lateral groove 123 , the third main groove 113 and the blocks 13 between the shoulders 14 on both sides The upper shoulder decorative groove 15 is Z-shaped.

In FIGS. 3 and 4 , the first preferred embodiment of a tire pattern noise reduction structure provided by the present invention, wherein the blocks surrounded by the first main groove 111 , the second main groove 112 and the first lateral groove 121 13 has a Z-shaped middle decorative groove 16 in the middle.

In FIGS. 3 and 4 , the first preferred embodiment of a tire pattern noise reduction structure provided by the present invention, wherein the blocks surrounded by the second main groove 112 , the third main groove 113 and the second lateral groove 122 13 has a Z-shaped middle decorative groove 161 in the middle.

In FIGS. 3 and 7 , the first preferred embodiment of a tire pattern noise reduction structure provided by the present invention, wherein the blocks surrounded by the second main groove 112 , the third main groove 113 and the second lateral groove 122 13. There are bell-shaped grooves at the intersections of the two ends of the Z-shaped middle decorative groove 161 in the middle with the second main groove 112 and the third main groove 113. As shown in Fig. 7, the circumferential width W1 of the bell-shaped groove is 0.7W~0.8W, the axial width h1 is 0.8W~0.9W, the axial outer chamfer R1 of the bell-shaped groove is 0.25W~0.45W, the axial inner chamfer R2=1/2W1, R1<0.25W will Lead to stress concentration; R1>0.45W will affect the rigidity of the block and lead to insufficient driving force.

In view of the above, the noise reduction structure of the tire pattern disclosed in the present invention utilizes longitudinal main grooves and transverse transverse grooves to cut the tread to form a number of blocks, and utilizes an appropriate oblique angle between the main groove and the transverse groove and is matched with bell-shaped grooves. The block can provide better handling characteristics, while improving the noise reduction effect and maintaining the drainage performance, so as to obtain a road tire with high practicability.

The above descriptions are only preferred embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims (7)

1. A tire tread noise reduction structure, comprising: A tread surrounds the surface of the tire, the tread extends several main grooves in the tire circumferential direction, and extends several lateral grooves along the tire axial direction, the main groove and the lateral grooves divide the tread into several blocks, the main grooves The grooves on the tread are the first main groove, the second main groove and the third main groove in order from the center to the outside according to the arrangement sequence. The lateral groove includes the first lateral groove, the second lateral groove and the third lateral groove. in: The first main groove is parallel to the tire circumferential direction, the second main groove and the tire circumferential direction are Z-shaped, the third main groove is Z-shaped with the tire circumferential direction, and the first lateral groove connects the first main groove and the tire circumferential direction. The second main groove, the first lateral groove and the tire axial direction are at an angle of 15-20 degrees, the second lateral groove connects the second main groove and the third main groove, and the second lateral groove is 15 degrees in the tire axial direction. -20 degree bending angle, the third lateral groove is a V-shaped connecting the third main groove to the shoulders on both sides of the tread, the third lateral groove, the third main groove and the pattern between the shoulders on both sides A shoulder decorative groove is arranged on the block. 2 . The noise reduction structure of the tire pattern according to claim 1 , wherein the second main groove and the tire circumferential direction present a Z-shaped folded angle, and the folded angle is 10-15 degrees, and the width W of the main groove is 4~15 degrees. 3 . 9mm. 3. The noise reduction structure of the tire pattern of claim 1, wherein the third main groove and the tire circumferential direction present a Z-shaped fold angle, and the fold angle is 10-15 degrees, and the width W of the main groove is 4~ 9mm. 4 . The noise reduction structure of the tire pattern of claim 1 , wherein a Z-shaped middle decorative groove is formed in the middle of the blocks surrounded by the first main groove, the second main groove and the first lateral groove. 5 . 5 . The noise reduction structure of the tire pattern of claim 1 , wherein the V-shaped folding angle of the third lateral groove is 160-175 degrees. 6 . 6 . The noise reduction structure of the tire pattern according to claim 2 or 3 , wherein a Z-shaped middle decorative groove is formed in the middle of the blocks surrounded by the second main groove, the third main groove and the second lateral groove. 7 . 7 . The noise reduction structure of the tire pattern according to claim 6 , wherein both ends of the Z-shaped middle decorative groove in the middle of the blocks surrounded by the second main groove, the third main groove and the second lateral groove are connected to the second main groove. 8 . The intersection of the main groove and the third main groove is provided with a bell-shaped groove, the circumferential width W1 of the bell-shaped groove is 0.7W~0.8W, the axial width h1 is 0.8W~0.9W, and the axial outer side chamfer R1 It is 0.25W~0.45W, and the axial inner chamfer R2=1/2W1.

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