CN214874036U - Novel nail-embedded snow tire - Google Patents

Abstract

The utility model discloses a novel studded snow tire, which comprises a tread, wherein the tread is provided with a central pattern block, a crown pattern block and a shoulder pattern block which are integrated in the circumferential direction and jointly form a V-shaped pattern; longitudinal pattern grooves are arranged between the crown pattern blocks and the central pattern blocks, one sides of the crown pattern blocks, which are close to the central line of the tread, are connected in pairs, a first transverse pattern groove is formed between two connected crown pattern blocks, a second transverse pattern groove is formed between two adjacent crown pattern blocks which are not connected, and the second transverse pattern groove is communicated with the longitudinal pattern grooves; a zigzag pattern groove is formed between the crown pattern block and the shoulder pattern block; and anti-skid nails are inlaid on the crown pattern blocks and the shoulder pattern blocks. The performance of the ice and snow land without nails is effectively improved through the design of tread patterns; the reasonable distribution of nail position through inlaying effectively guarantees the ice and snow ground performance when inlaying the nail, compromises and inlays nail and non-nail performance, makes the tire have excellent ice and snow performance.

Description

Novel nail-embedded snow tire

Technical Field

The utility model belongs to the technical field of the tire structure technique and specifically relates to a novel nail-embedded snowfield tire.

Background

In parts of countries in the northern hemisphere, due to cold winter and frequent snowfall, snow is accumulated on roads in different degrees, which brings great inconvenience and insecurity to driving in winter. The common summer radial tire is affected by the reduction of air temperature, the tread rubber is hardened and becomes brittle, so that the grip performance and the wear resistance are reduced to a great extent, and the snow radial tire with softer tread and stronger grip performance needs to be replaced in winter. The snow-covered radial tires currently used are mainly classified into two main types, i.e., studded snow-covered radial tires and non-studded snow-covered radial tires. Although the studded snow-covered radial tire has good ground gripping performance, the raised anti-skid stud has great damage to the road surface, the installation is time-consuming and labor-consuming, the fuel consumption is large, and the use of the studded snow-covered radial tire is prohibited by the legislation of part of the country. The non-studded snow radial tire has slightly poorer ground gripping performance than the studded snow radial tire and can only be used on a road surface with not very thick accumulated snow barely; canada in north america is cold in winter and snowfalls frequently, kuebeck has established law in winter that snow tires must be used, other provinces, although not having legislation, strongly recommend using snow tires, but have clear requirements on the service time of studded snow tires. Because most of Canadian population is concentrated in the south, and the south has less snowfall, the average usage rate of Canadian studded snow tires is only 20% -25%, and the rest are non-studded snow tires. Some consumers have a habit of driving to the north in winter, so different requirements are made on whether the tire is studded or not.

In order to ensure the firmness of the embedded snow nails, the conventional radial tire with embedded snow nails is generally larger in pattern design pitch, less in steel sheet and higher in pattern block rigidity, and can meet the performance requirements of a north running vehicle after being embedded with the snow nails; if the nail is not embedded in the south, the performance of the ice and snow land is greatly reduced; if the nail is used, the south part of the road has less snowfall, and the road surface is greatly damaged; the conventional non-nailed snow radial tire has the defects that the design pitch of patterns is smaller, more steel sheets are arranged, the rigidity of pattern blocks is lower, the enveloping property to the road surface is better, the service performance of a driving in the south can be met, and the safety and performance requirements of the driving in the north cannot be ensured due to the fact that nails cannot be nailed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a novel nail-embedded snow tire, which combines the performances of nail embedding and non-nail embedding, and effectively increases the performance of the snow and ice land when the nail is not embedded through the tread pattern design; the performance of ice and snow lands during nail embedding is effectively ensured through reasonable distribution of the positions of the embedded nails; through the design of zigzag-shaped cutter grooves and alternating depth and depth, the nail embedding performance and the nail non-embedding performance are considered.

The utility model adopts the technical proposal that:

the novel studded snow tire comprises a tread, wherein the tread is provided with a central pattern block which is integrated in the circumferential direction, two sides of the central pattern block are provided with crown pattern blocks, one side of the crown pattern block, which is close to a tire shoulder, is provided with shoulder pattern blocks, the shoulder pattern blocks extend to a tire side, and the shoulder pattern blocks, the crown pattern blocks and the central pattern block jointly form V-shaped patterns; the crown pattern blocks and the central pattern blocks are separated by zigzag longitudinal pattern grooves, one side of each crown pattern block close to the central line of the tread is connected in pairs, a first transverse pattern groove is formed between two connected crown pattern blocks, a second transverse pattern groove is formed between two adjacent crown pattern blocks which are not connected, the second transverse pattern groove is communicated with the longitudinal pattern grooves, and the first transverse pattern groove and the second transverse pattern groove both extend to the sidewalls; a zigzag pattern groove is formed between the crown pattern block and the shoulder pattern block; and anti-skid nails are inlaid on the crown pattern blocks and the shoulder pattern blocks.

Preferably, the parts of the central pattern blocks, which are positioned on the two sides of the central line of the tread, are of trapezoid-like structures and are in mirror image staggering with each other; two adjacent trapezoid-like structures on two sides of the tread center line are separated by a third transverse groove. The central pattern blocks are integrally in the shape of staggered trapezoid ribs and are connected into a whole along the circumferential direction, so that the rigidity of the central pattern blocks is greatly increased, the traction and braking performance of the tire in the linear direction can be ensured, and the steering performance of the tire can be effectively enhanced, so that the control performance is improved; the combination of the first transverse groove, the second transverse groove and the third transverse groove can exert the traction performance and the braking performance in the linear direction of the transverse groove to the maximum extent.

Preferably, the middle positions of the trapezoid-like structures on two sides of the tread center line are provided with fourth transverse grooves, the central pattern block is provided with a longitudinal fine groove on the tread center line, and the fourth transverse grooves are communicated with the longitudinal fine groove through the transverse fine groove. The design of the longitudinal fine grooves and the transverse fine grooves improves the drainage performance of the tire.

Preferably, the depth of the first transverse grooves increases gradually from the crown to the shoulders; the width of the first transverse groove and the second transverse groove is gradually increased from the crown to the shoulder. One side of the crown pattern block close to the central line of the tread is connected in pairs and matched with the transverse pattern grooves, and the traction performance and the braking performance of the transverse grooves in the linear direction are exerted to the maximum extent while the rigidity of the circumferential pattern blocks is ensured.

Preferably, the crown pattern blocks and the shoulder pattern blocks positioned on the two sides of the tread center line are respectively arranged in a mirror image staggered mode relative to the tread center line; the parts of the shoulder pattern blocks, which are positioned on the tire crown, are alternately arranged along the circumferential direction.

Preferably, the side walls of the first and second transverse grooves are serrated, the serrations having a height of 1.4-1.6 mm; the shoulder pattern blocks are alternately arranged in the circumferential direction and the width, and are matched with the first zigzag transverse pattern groove and the second zigzag transverse pattern groove, so that the snow traction performance of the tire and the control performance during turning are effectively improved.

Preferably, the number ratio of studs on the crown blocks to shoulder blocks is 17: 32; the tread with the center point of the antiskid nail as the center of a circle and the radius of 7.5-8.5mm is not provided with a tool groove, so that the rigidity of pattern blocks at the position where the antiskid nail is embedded is improved, and the antiskid nail is prevented from loosening or falling off; the anti-skid nails are provided with 14-16 rows in the width direction of the tread, the embedded anti-skid nails are uniformly distributed on the tread pattern blocks and present a V shape consistent with the trend of the pattern, and the optimization of the positions of the embedded anti-skid nails ensures that each anti-skid nail fully exerts the gripping performance and the traction force.

Preferably, the angle between the transverse trend of the third transverse groove and the central line of the tread is 70-75 degrees; the depth is 60% of the second transverse groove depth.

Preferably, the central pattern block, the crown pattern block and the shoulder pattern block are provided with three-dimensional sipes which are in a zigzag shape on the surface of the pattern blocks; the width of the three-dimensional sipes is 0.45-0.55mm, and the three-dimensional sipes are also in a zigzag shape along the depth direction of the pattern blocks; the depth of the three-dimensional cutter grooves is alternatively arranged in depth, the depth of the shallow part is 1/4 of the depth of the deep part, and the length of the shallow part is 3 mm; the bending number of the three-dimensional cutter grooves in the depth direction of the pattern blocks is 3-4, and the vertical distance between the wave crest and the wave trough of the zigzag shape is 1.3-1.5 mm; the multi-layer three-dimensional cutter grooves are formed in each pattern block, the cutter grooves are alternately arranged in depth to reinforce the pattern blocks, the pattern blocks are guaranteed to be rigid while the grabbing performance of the pattern blocks on the snowfield is improved, and looseness and falling of anti-skid nails are effectively prevented.

Preferably, the snow tire adopts three pattern pitches in the circumferential direction, and the pitch width ratio is 1: 0.856: 0.714, and the corresponding pitch numbers are 18, 20 and 28 respectively; the total number of the pitches is 66, and the variable pitch design enables transition between adjacent pitches to be balanced, prevents abnormal abrasion and can effectively reduce noise.

The utility model has the advantages that:

1. the central pattern blocks are integrally in the shape of staggered trapezoid ribs and are connected into a whole along the circumferential direction, so that the rigidity of the central pattern blocks is greatly increased, the traction and braking performance of the tire in the linear direction can be ensured, and the steering performance of the tire can be effectively enhanced, so that the control performance is improved;

2. the shoulder pattern blocks, the crown pattern blocks and the central pattern blocks form V-shaped patterns together, and the V-shaped patterns are consistent with the running direction of the tire; the combination of the first transverse groove, the second transverse groove and the third transverse groove is matched, so that the traction performance and the braking performance in the linear direction of the transverse groove are exerted to the maximum extent;

3. the positions of the embedded nails are reasonably designed, the anti-skid nails are maximally dispersed on each pattern block, the number of rows of the anti-skid nails in the transverse direction is increased, and the positions of the embedded nails in the circumferential direction are appropriately spaced, so that each embedded nail can fully exert the gripping performance and the traction force;

4. each pattern block is provided with a plurality of layers of three-dimensional cutter grooves, and the cutter grooves are alternately arranged in depth to reinforce the pattern block, so that the rigidity of the pattern block is ensured while the gripping performance of the pattern block on snow is improved, and the looseness and falling off of the anti-skid nails are effectively prevented;

5. the utility model provides a novel inlay decorative pattern design of nail snowfield child makes the actual ground connection impression area in the child hat 60% grounding area increase by a wide margin, effectively promotes the ascending traction and the brake performance of tire straight line side.

Drawings

FIG. 1 is a schematic structural diagram of the tread pattern of the present invention;

FIG. 2 is a schematic structural view of a center block;

FIG. 3 is a schematic view of the pattern pitch and 60% land area (frame A) of the present invention;

fig. 4 is a schematic view of the rows of the anti-skid studs of the present invention;

FIG. 5 is a cross-sectional view of the three-dimensional sipe taken along the direction B-B in FIG. 2;

FIG. 6 is a schematic cross-sectional structure view of a three-dimensional sipe;

FIG. 7 is a comparative diagram of the snow braking test of the new studded snow tire of the present invention and the snow tire of the prior art;

fig. 8 is a snow acceleration test comparison diagram of the novel studded snow tire and the snow tire in the prior art.

Reference numerals: 1. a central pattern block; 2. crown pattern blocks; 3. tire shoulders; 4. shoulder pattern blocks; 41. the shoulder pattern blocks are positioned on the part of the tread; 5. a sidewall; 6. a longitudinal groove; 7. a tread centerline; 8. a first transverse groove; 9. a second transverse groove; 10. a dogleg pattern groove; 11. a trapezoid-like structure; 12. anti-skid nails; 13. a third transverse groove; 14. a fourth transverse groove; 15. a longitudinal fine groove; 16. a transverse fine groove; 17. a three-dimensional knife groove.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments thereof for the purpose of enabling those skilled in the art to better understand the present invention.

A novel studded snow tire comprises a tread, wherein the tread is provided with a central pattern block 1 which is integrated in the circumferential direction, both sides of the central pattern block 1 are provided with crown pattern blocks 2, one side of each crown pattern block 2 close to a tire shoulder 3 is provided with a shoulder pattern block 4, each shoulder pattern block 4 extends to a tire side 5, and the shoulder pattern blocks 4, the crown pattern blocks 2 and the central pattern block 1 form a V-shaped pattern together; the crown pattern blocks 2 and the central pattern blocks 1 are separated by zigzag-shaped longitudinal pattern grooves 6, one sides of the crown pattern blocks 2 close to the central line 7 of the tread are connected in pairs, the width of the connection position is 4-7mm at the narrowest, a first transverse pattern groove 8 is formed between the two connected crown pattern blocks 2, a second transverse pattern groove 9 is formed between the two unconnected adjacent crown pattern blocks 2, the second transverse pattern groove 9 is communicated with the longitudinal pattern grooves 6, and the first transverse pattern groove 8 and the second transverse pattern groove 9 both extend to the sidewall to separate the two adjacent shoulder pattern blocks 4; a zigzag pattern groove 10 is formed between the crown pattern block 2 and the shoulder pattern block 4; the crown pattern block 2 and the shoulder pattern block 4 are inlaid with anti-skid nails 12; the number ratio of the studs 12 on the crown blocks 2 to the shoulder blocks 4 is 17: 32; a cutter groove is not formed on the tread with the center point of the antiskid nail 12 as the center of a circle and the radius of 7.5-8.5 mm; as shown in figure 4, the anti-skid nails are arranged in 14-16 rows in the width direction of the tread, and the embedded anti-skid nails are uniformly distributed on the tread blocks and present a V shape consistent with the pattern trend.

As shown in fig. 2, the parts of the central pattern blocks 1 on both sides of the tread centerline 7 are both trapezoid-like structures 11, and are staggered in a mirror image manner; two adjacent trapezoid-like structures 11 on two sides of the tread center line 7 are separated by a third transverse groove 13; fourth transverse grooves 14 are arranged in the middle of the trapezoid-like structures 11 on two sides of the tread center line 7, the central pattern blocks 1 are provided with longitudinal fine grooves 15 on the tread center line 7, and the fourth transverse grooves 14 are communicated with the longitudinal fine grooves 15 through the transverse fine grooves 16.

The depth of the first transverse groove 8 is gradually deepened from the crown to the shoulder; the width of the first transverse groove 8 and the second transverse groove 9 is gradually increased from the crown to the shoulder; the side walls of the first transverse pattern groove 8 and the second transverse pattern groove 9 are in a sawtooth shape, and the height of the sawtooth is 1.4-1.6 mm; as shown in fig. 2, the angle between the transverse direction of the third transverse groove 13 and the tread center line 7 is α, and the value of α is 70 to 75 °; the depth of said third transverse grooves 13 is 60% of the depth of the second transverse grooves 9.

As shown in fig. 1, the crown blocks 2 and the shoulder blocks 4 on both sides of the tread center line 7 are respectively arranged in a mirror-image staggered manner with respect to the tread center line 7; the parts 41 of the shoulder pattern blocks 4 on the tire crown are alternately arranged along the circumferential direction; the adjacent shoulder pattern blocks 4 are staggered from each other in the transverse direction at a distance L on the side close to the tread center line 7₄，L₄The value is 4-7 mm.

The central pattern block 1, the crown pattern block 2 and the shoulder pattern block 4 are provided with three-dimensional sipes 17 which are in a zigzag shape on the surfaces of the pattern blocks; as shown in fig. 5 to 6, the three-dimensional sipes 17 have a width d, wherein the value of d is 0.45 to 0.55mm, and the three-dimensional sipes 17 are also in a zigzag shape along the depth direction of the pattern blocks; the depth of the three-dimensional cutter grooves 17 is alternately arranged in depth, and the depth h of the shallow part₁Depth of depth h₂1/4, the length of the shallow part is L₁，L₁The value is 3 mm; the bending number of the three-dimensional sipes 17 in the pattern block depth direction is 3-4, and the vertical distance between the fold-line-shaped wave crest and the wave trough in the pattern block depth direction is L₂，L₂The value is 1.3-1.5 mm;

in some specific embodiments of the present invention,as shown in fig. 3, the snow tire adopts three pattern pitches L, M, and S in the circumferential direction, and the pitch length ratio of L, M, and S is 1: 0.856: 0.714, and the corresponding pitch numbers are 18, 20 and 28 respectively; the central pattern blocks 1, the crown pattern blocks 2 and the shoulder pattern blocks 4 on the two sides of the tread central line 7 are respectively staggered in the longitudinal direction by a distance L₃，L₃Taking a value of 0.63S pitch lengths.

The utility model provides a novel inlay decorative pattern design of nail snowfield child, as shown in FIG. 3, make the actual ground connection impression area in the 60% ground connection region of child hat (A circle region in the picture) increase by a wide margin, effectively promote the ascending traction and the brake performance of tire straight line side.

Fig. 7 is the utility model provides a snow braking test contrast of novel studded snow child and the snow child among the prior art, can know according to the test result in fig. 7: compared with the prior art, the utility model provides a novel nail-embedded snow tire snow braking performance promotes 6.7%.

Fig. 8 is the utility model provides a snow of novel studded snow child and the snow child among the prior art tests the contrast with higher speed, can know according to the test result in the picture: compared with the prior art, the utility model provides a novel nail-embedded snow tire snow field acceleration performance promotes 8.3%.

The above is right the utility model provides a novel nail-embedded snowfield tire carries out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the methods and the central idea of the present invention, and the mentioned directional terms are, for example: upper, lower, left, right, front, rear, etc. are directions with reference to the drawings, and directional terms are used for illustration and are not intended to limit the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be subject to several improvements and modifications, which also fall within the scope of the claims of the present invention.

Claims (10)

1. The novel studded snow tire comprises a tire tread and is characterized in that the tire tread is provided with a central pattern block which is integrated in the circumferential direction, crown pattern blocks are arranged on two sides of the central pattern block, shoulder pattern blocks are arranged on one side, close to a tire shoulder, of the crown pattern block and extend to a tire side, and the shoulder pattern blocks, the crown pattern blocks and the central pattern blocks jointly form V-shaped patterns; the crown pattern blocks and the central pattern blocks are separated by zigzag longitudinal pattern grooves, one side of each crown pattern block close to the central line of the tread is connected in pairs, a first transverse pattern groove is formed between two connected crown pattern blocks, a second transverse pattern groove is formed between two adjacent crown pattern blocks which are not connected, the second transverse pattern groove is communicated with the longitudinal pattern grooves, and the first transverse pattern groove and the second transverse pattern groove both extend to the sidewalls; a zigzag pattern groove is formed between the crown pattern block and the shoulder pattern block; and anti-skid nails are inlaid on the crown pattern blocks and the shoulder pattern blocks.

2. The novel studded snow tire as claimed in claim 1, wherein the parts of the central blocks on both sides of the tread centerline are both of a trapezoid-like structure and are staggered in a mirror image manner; two adjacent trapezoid-like structures on two sides of the tread center line are separated by a third transverse groove.

3. The novel studded snow tire as claimed in claim 2, wherein the center of the trapezoid-like structure on both sides of the tread center line is provided with fourth transverse grooves, the central block is provided with fine longitudinal grooves at the tread center line, and the fourth transverse grooves are communicated with the fine longitudinal grooves through the fine transverse grooves.

4. A new studded snow tire according to claim 1, wherein the depth of the first transverse grooves progressively deepens from the crown to the shoulder; the width of the first transverse groove and the second transverse groove is gradually increased from the crown to the shoulder.

5. The novel studded snow tire as claimed in claim 1, wherein the crown blocks and the shoulder blocks on both sides of the tread centerline are respectively arranged in a mirror-image staggered manner with respect to the tread centerline; the parts of the shoulder pattern blocks, which are positioned on the tire crown, are alternately arranged along the circumferential direction.

6. A new studded snow tire according to claim 1, wherein the side walls of the first and second transverse grooves are serrated.

7. The new studded snowfield tire of claim 1, wherein the number ratio of studs on crown blocks to shoulder blocks is 17: 32; a cutter groove is not formed on the tire surface with the center point of the antiskid nail as the center of a circle and the radius of 7.5-8.5 mm; the studs are provided with 14-16 rows in the tread width direction.

8. A novel studded snow tire according to claim 2, characterized in that the angle between the transverse direction of the third transverse grooves and the tread centerline is 70-75 °; the depth is 60% of the second transverse groove depth.

9. The novel studded snow tire as claimed in claim 1, wherein three-dimensional sipes in a zigzag shape on the surface of the blocks are arranged on the central block, the crown block and the shoulder blocks; the width of the three-dimensional sipes is 0.45-0.55mm, and the three-dimensional sipes are also in a zigzag shape along the depth direction of the pattern blocks; the depth of the three-dimensional cutter grooves is alternately arranged according to the depth.

10. A novel studded snow tire as claimed in claim 1, wherein the snow tire adopts three pattern pitches in the circumferential direction, and the pitch width ratio is 1: 0.856: 0.714 and the corresponding number of pitches is 18, 20, 28 respectively.

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