CN111016546B - Winter tyre with staggered pattern blocks - Google Patents
Winter tyre with staggered pattern blocks Download PDFInfo
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- CN111016546B CN111016546B CN201911421104.9A CN201911421104A CN111016546B CN 111016546 B CN111016546 B CN 111016546B CN 201911421104 A CN201911421104 A CN 201911421104A CN 111016546 B CN111016546 B CN 111016546B
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- 239000011295 pitch Substances 0.000 claims description 77
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0304—Asymmetric patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0327—Tread patterns characterised by special properties of the tread pattern
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses a winter tire with staggered pattern blocks, which comprises a tread part, a tire shoulder part and tire patterns arranged on the tread part and the tire shoulder part along the tire circumferential direction, wherein the tire patterns comprise a center pattern positioned at the center of the tire tread and side block patterns positioned at two sides of the center pattern, the center pattern comprises a guide part positioned at the center line of the tire and middle block patterns positioned at two sides of the guide part, a first transverse groove is arranged between any two adjacent middle block patterns, a first transverse groove is formed between any one middle block pattern and one first transverse groove adjacent to the middle block pattern, a second transverse groove is arranged between any two adjacent side block patterns, a class B pattern section is formed between any one side block pattern and one second transverse groove adjacent to the one side block pattern, and the class number of the class A pattern section is different from the class B pattern section.
Description
Technical Field
The invention relates to the field of tires, in particular to a winter tire with staggered pattern blocks.
Background
When the tire runs on an ice-snow road surface, a layer of water film is formed on the contact surface, so that the grip force between the tire and the road surface is reduced, and the tire skid is caused to influence the running safety of the vehicle.
The main sources of tire noise are the following two: during running of the vehicle, noise generated by friction between the surface of the tire and the ground; noise generated by interaction of grooves in the tire surface with air.
The existing winter tire increases the tire grip by arranging steel sheet patterns on the tread, more steel sheet patterns are required to be arranged for ensuring the grip, the number of small grooves of the tread is increased, and larger noise is generated when the small grooves interact with air in the small grooves.
Disclosure of Invention
In order to solve the technical problems, the invention provides a winter tire with staggered pattern blocks, wherein the staggered pattern blocks are arranged on the tread to block the circulation of air, so that the cavity noise generated by the action of the tire and the air can be effectively reduced.
In order to solve the technical problems, the invention adopts the following technical scheme:
The winter tyre with staggered pattern blocks comprises a tread part, a shoulder part and tyre patterns arranged on the tread part and the shoulder part along the circumferential direction of the tyre, wherein the tyre patterns comprise a central pattern positioned at the center of the tread and side block patterns positioned at two sides of the central pattern, the central pattern comprises a guide part positioned at the center line of the tyre and middle block patterns positioned at two sides of the guide part, a first transverse groove is arranged between any two adjacent middle block patterns, a first transverse groove adjacent to the middle block patterns is formed into a type A pattern section, a second transverse groove is arranged between any two adjacent side block patterns, a type B pattern section is formed between any one side block pattern and one second transverse groove adjacent to the side block pattern section, the number of pattern pitches possessed by the type A pattern section is different from the number of pattern pitches possessed by the type B pattern section, and the dislocation value x=5.6 mm in the circumferential direction of the first pattern section of the type A pattern section and the first pattern section of the type B pattern section is different from the number possessed by the type B pattern section.
Further, the type a pattern section includes two pattern pitches, and the type B pattern section includes three pattern pitches.
Further, the two pattern pitches included in the type a pattern joint are a first pattern pitch PA and a second pattern pitch PB, the second pattern pitch pb=49.0 mm to 54.0mm, and the first pattern pitch PA and the second pattern pitch PB have the following relationship: PB/pa=1.10 to 1.50.
Further, the three pattern pitches included in the B-type pattern joint are a third pattern pitch PC, a fourth pattern pitch PD and a fifth pattern pitch PE, respectively, wherein the fourth pattern pitch pd=33.0 mm to 38.00mm, and the third pattern pitch PC, the fourth pattern pitch PD and the fifth pattern pitch PE have the following relationship: PC/pd=1.10 to 1.50, PD/pe=1.06 to 1.40.
Further, on any radial section of the tire, the outer contour from the tread center to the upper end point of the tread side is sequentially divided into a first segment of arc and a second segment of arc, the inner contour from the tread center to the lower end point of the tread side is sequentially divided into a third segment of arc, a fourth segment of arc and a fifth segment of arc, and the following relationship exists among the radius R1 of the first segment of arc, the radius R2 of the second segment of arc, the radius R3 of the third segment of arc, the radius R5 of the fifth segment of arc, the width SW of the widest part of the tire and the arc length TDW of the tread: TDW/sw=0.8 to 0.9, r2/sw=36.5 to 45, r3/sw=0.14 to 0.2, r5=25 mm to 50mm; the relationship among the arc length L1 of the first segment of arc, the arc length TDW of the tread, the radial height SDH from the widest part of the tire to the heel and the radial height SH from the highest point of the tire to the heel is as follows: L1/(TDW/2) =0.45 to 0.6, sdh/sh=0.42 to 0.58.
Further, a first longitudinal main groove is arranged between the guide part and the middle block pattern, a second longitudinal main groove is arranged between the middle block pattern and the side block pattern, the width f=7mm-14 mm of the first longitudinal main groove, and the width E of the second longitudinal main groove and the width F of the first longitudinal main groove have the following relation: f/e=0.40 to 0.80.
Further, the guide portion includes first and second foot-shaped blocks alternately arranged on both sides of the center line of the tire in the extending direction of the guide portion; a first groove is formed between any one of the first foot-shaped pattern blocks and a second pattern block closest to the first foot-shaped pattern block; a second groove is arranged between any two adjacent first foot-shaped pattern blocks and between any two adjacent second foot-shaped pattern blocks; one end of the second groove is communicated with the first groove, and the other end of the second groove is communicated with the first longitudinal main groove.
Further, two sides of the middle block pattern are a first side and a second side respectively, a third groove is formed in the first side of any middle block pattern, a fourth groove is formed in the second side of any middle block pattern, a fifth groove is formed in the middle of the middle block pattern, one end of the third groove is communicated with a first transverse groove close to the first side, the other end of the third groove is communicated with a first end of the fifth groove, one end of the fourth groove is communicated with the first transverse groove close to the second side, the other end of the fourth groove is communicated with a second end of the fifth groove, and the third groove, the fourth groove and the fifth groove form an approximate I shape; the first transverse grooves, the third grooves on the middle block pattern on one side of the first transverse grooves and the fourth grooves on the middle block pattern on the other side of the first transverse grooves form a cross shape.
Further, the tire further comprises shoulder patterns symmetrically arranged on the tire shoulder, the shoulder patterns are arranged on the outer sides of the edge block patterns, and the shoulder pattern blocks are provided with vertical grooves.
Further, a sine wave-shaped steel sheet pattern is arranged on the tire pattern, and the steel sheet pattern is provided with a deep part with a larger depth and a shallow part with a smaller depth.
Compared with the prior art, the invention has the beneficial technical effects that:
1. Through the staggered pattern blocks arranged on the tread, the circulation of air in the tread groove is blocked, and the cavity noise generated by the action of the tire and the air can be effectively reduced.
2. The tread profile is optimized, the ground contact area of the tire is improved, and the ground grabbing capability of the tire is improved.
3. Various patterns of grooves are added on the tread, so that the drainage capacity is improved, and the ground grabbing capacity of the tire is further improved.
4. The tread pitch ratio of the tire is optimized, noise generated when the tread contacts the ground is dispersed to a plurality of frequencies, and the tire noise is reduced.
Drawings
FIG. 1 is a schematic view of the tire pattern of the present invention;
FIG. 2 is a schematic view of the outer and inner contours of the present invention;
FIG. 3 is a schematic view of the structure of the first and second arcs of the present invention;
FIG. 4 is a schematic view of the third pattern pitch, the fourth pattern pitch, and the fifth pattern pitch of the present invention;
FIG. 5 is a schematic view of the first pattern pitch and the second pattern pitch of the present invention;
FIG. 6 is a schematic view of the structure of the steel pattern of the present invention;
FIG. 7 is a schematic view of a first arrangement of deep and shallow portions of the steel pattern of the present invention;
FIG. 8 is a schematic view of a second arrangement of deep and shallow portions of the steel pattern of the present invention.
Detailed Description
A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a winter tire with staggered blocks comprises a tread portion 1, a tread portion 2 and tire patterns arranged on the tread portion and the tread portion along the tire circumferential direction, wherein the tire patterns comprise a center pattern positioned at the center of the tread and side block patterns 50 positioned at two sides of the center pattern, the center pattern comprises a guide part 10 positioned at the center line of the tire and middle block patterns 30 positioned at two sides of the guide part, a first transverse groove 31 is arranged between any two adjacent middle block patterns, a first transverse groove adjacent to the first transverse groove is formed by any one middle block pattern, a second transverse groove 51 is arranged between any two adjacent side block patterns 50, a class B block pattern is formed between any one side block pattern and one second transverse groove adjacent to the first side block pattern, the number of pattern pitches possessed by the class a block pattern is different from the number of pattern pitches possessed by the class B block pattern pitch, and the value of the first block of the class a block pattern and the class B block pattern pitch of the tire circumferential direction is 8.8 mm-0.6 mm.
In the embodiment, the types of pattern joints A are two types, namely a first pattern pitch PA and a second pattern pitch PB, wherein the number of the first pattern pitches is NPA, and the number of the second pattern pitches is NPB; the number of the B-type pattern joints is three, namely a third pattern pitch PC, a fourth pattern pitch PD and a fifth pattern pitch PE, wherein the number of the third pattern pitches is NPC, the number of the fourth pattern pitches is NPD, and the number of the fifth pattern pitches is NPE.
Since the outer circumference of the tire is constant, PA npa+pb npb=pc npc+pd npd+pe npe=outer circumference of the tire.
When the a-type and B-type segments are arranged on the circumferential surface of the tire, the first segment P1 of the a-type segment and the first segment P2 of the B-type segment have the following relationship: one end of P1 is aligned with one end of P2 in the circumferential direction of the tire, but the other end of P1 and the other end of P2 are staggered in the circumferential direction of the tire due to the different lengths of P1 and P2, wherein the staggered value is the staggered value x of the first pattern joint of the A pattern joint and the first pattern joint of the B pattern joint in the circumferential direction of the tire; wherein P1 is one of the first pattern pitch PA or the second pattern pitch PB, and P2 is one of the third pattern pitch PC, the fourth pattern pitch PD or the fifth pattern pitch PE.
Because the dislocation exists between the middle block pattern and the side block pattern, and the number of pattern pitches possessed by the middle block pattern is different from the number of pattern pitches possessed by the side block pattern, the first transverse groove and the second transverse groove can be staggered to the greatest extent, air in the groove on the surface of the tire is compressed and moves along the extending direction of the groove in the running process of the vehicle, and cavity noise is generated by the action of the air running at high speed and the groove; the first transverse grooves and the second transverse grooves are staggered to damage the movement of air in the grooves on the surface of the tire, so that the running speed of the tire is slowed down, and the noise generated when the tire acts on the ground is reduced.
To demonstrate the practical effect of the present invention, a tire of specification 245/55R19 was tested.
Test standard: ECE R117;
test conditions: the wind speed is 1.8 m/s-3.6 m/s, the surface temperature is 11.5-18.8 ℃, and the air temperature is 8.2-15.7 ℃;
From the above-described structure, the misalignment value employed in example 4 can obtain the optimum tire noise; when the misalignment value x=5.6 mm to 8.0mm in the tire circumferential direction of the first segment of the class a segment and the first segment of the class B segment is compared with the comparative example, the noise level of the tire is significantly reduced.
As shown in fig. 1, the two pattern pitches included in the a-type pattern joint are a first pattern pitch PA and a second pattern pitch PB, the second pattern pitch pb=49.0 mm-54.0 mm, and the first pattern pitch PA and the second pattern pitch PB have the following relationship: PB/pa=1.10 to 1.50.
As shown in fig. 1, the three pattern pitches included in the B-type pattern joint are a third pattern pitch PC, a fourth pattern pitch PD and a fifth pattern pitch PE, respectively, wherein the fourth pattern pitch pd=33.0 mm to 38.00mm, and the third pattern pitch PC, the fourth pattern pitch PD and the fifth pattern pitch PE have the following relationship: PC/pd=1.10 to 1.50, PD/pe=1.06 to 1.40.
As shown in fig. 1, in any radial section of the tire, the outer contour from the tread center to the upper end point D of the tread side is sequentially divided into a first segment arc 71 and a second segment arc 72, and the inner contour from the tread center to the lower end point C of the tread side is sequentially divided into a third segment arc 73, a fourth segment arc 74 and a fifth segment arc 75, wherein the following relationship exists among the radius R1 of the first segment arc, the radius R2 of the second segment arc, the radius R3 of the third segment arc, the radius R5 of the fifth segment arc, the width SW of the widest part of the tire and the arc length TDW of the tread: TDW/sw=0.8 to 0.9, r2/sw=36.5 to 45, r3/sw=0.14 to 0.2, r5=25 mm to 50mm; the relationship among the arc length L1 of the first segment of arc, the arc length TDW of the tread, the radial height SDH from the widest part of the tire to the heel and the radial height SH from the highest point of the tire to the heel is as follows: L1/(TDW/2) =0.45 to 0.6, sdh/sh=0.42 to 0.58.
Through the design of the parameters, the contact area of the tire in the driving process is ensured to be maximized.
As shown in fig. 1, the first segment arc 71 and the second segment arc 72 define the outer profile of the tire, and the third segment arc 73, the fourth segment arc 74, and the fifth segment arc 75.
TBW is the axial distance between the contact points of the tire sides and the rim, and is designed using a standard rim plus 0.5 inch design.
The width SW of the widest part of the tire is amplified on the basis of the national standard, so that the actual tire can reach the national standard; in the invention, the SW values are different in design criteria adopted for different flat rates; tires having flat ratios of 40, 45, and 50, sw=national standard section width+ (6 to 8) mm; tires having flat ratios of 55, 60, and 65, sw=national standard section width+ (8 to 13) mm; tires having a flat ratio of 70 or more, sw=national standard section width+ (3 to 6) mm.
The depth gd=8.0 mm to 12.5mm of the first longitudinal main groove 20.
On any radial section of the tire, the upper end points D on the two sides of the tread are not chamfered, and the grounding area can be increased by adopting a sharp angle design, so that the ground grabbing capacity of the tire is improved.
As shown in fig. 1, a first longitudinal main groove 20 is disposed between the guide portion 10 and the intermediate block pattern 30, a second longitudinal main groove 40 is disposed between the intermediate block pattern and the side block pattern 50, the width f=7mm to 14mm of the first longitudinal main groove, and the width E of the second longitudinal main groove has the following relationship with the width F of the first longitudinal main groove: f/e=0.40 to 0.80; the width of the first longitudinal main groove is wider, so that the rapid snow discharge is facilitated, and the width of the second longitudinal main groove is wider than that of the first longitudinal main groove, so that the snow discharge performance is further improved.
As shown in fig. 1, the guide portion includes first and second foot blocks 11 and 12 alternately arranged on both sides of a tire center line in an extending direction of the guide portion 10; a first groove 13 is arranged between any one of the first foot-shaped pattern blocks and a second pattern block closest to the first foot-shaped pattern block; a second groove 14 is arranged between any two adjacent first foot-shaped pattern blocks and between any two adjacent second foot-shaped pattern blocks; one end of the second groove communicates with the first groove and the other end communicates with the first longitudinal main groove 20.
As shown in fig. 1, the two sides of the middle block pattern 30 are a first side and a second side, the first side of any one middle block pattern is provided with a third groove 32 and the second side is provided with a fourth groove 34, the middle part of the middle block pattern is provided with a fifth groove 33, one end of the third groove 32 is communicated with a first transverse groove close to the first side, the other end of the third groove 32 is communicated with a first end of the fifth groove, one end of the fourth groove 34 is communicated with the first transverse groove close to the second side, the other end of the fourth groove 34 is communicated with a second end of the fifth groove, and the third groove 32, the fourth groove 34 and the fifth groove 33 form a rough i shape.
A sixth groove 35 is formed in the side, close to the first longitudinal main groove, of the middle block pattern 30, and a seventh groove 36 is formed in the side, close to the second longitudinal main groove.
As shown in fig. 1, a substantially cross-shape is formed between any one of the first lateral groove 31, the third groove 32 in the intermediate block pattern 30 on one side of the first lateral groove, and the fourth groove 34 in the intermediate block pattern on the other side of the first lateral groove.
The width of the first groove 13 is 1.2 mm-3.5 mm, and the depth is 1.5 mm-4.0 mm; the second grooves 14 taper from 1.0mm to 4.0mm in width and from 1.2mm to 8.0mm in depth from the tire centerline to the first longitudinal main grooves 20; the sixth groove 35 and the seventh groove 36 are also gradually changed in width and depth directions, the sixth groove 35 and the seventh groove 36 are gradually changed from 1.0mm to 4.0mm in the direction from the center of the middle block pattern to the two sides of the middle block pattern, and the depth is gradually changed from 0mm to 6.0 mm; the third groove 32 and the fourth groove 34 are gradually changed from 1.0mm to 4.0mm in width and from 2mm to 8.0mm in depth from the center of the middle block pattern to the two ends of the middle block pattern; the width of the fifth groove is 2.0 mm-5.0 mm, and the depth is 2.0 mm-5.0 mm; the width of the first transverse groove is 4.0 mm-7.5 mm, and the depth is 7.0 mm-10.0 mm; the grooves have good penetrability and strong drainage capability, and the widths and depths of the second groove 14 and the sixth groove 35 are designed to be gradually changed, so that the rigidity of the tread can be increased while the drainage capability is ensured, and the tire has good grip on a wet road surface; the third groove 32, the fourth groove 34 and the fifth groove 33 form an approximate I shape, and accumulated water in the center of the middle block pattern can be timely discharged into the first transverse groove, so that the drainage capacity of the tire is improved; any one of the first transverse grooves 31, the third grooves 32 on the middle block pattern 30 on one side of the first transverse groove and the fourth grooves 34 on the middle block pattern on the other side of the first transverse groove form a cross shape, and the gradual change of the third grooves 32 and the fourth grooves 34 in the depth direction enables a V-shaped groove to be formed between two adjacent middle block patterns, so that water in the middle of the middle block pattern can be effectively and timely discharged, the snow biting capacity of a tread is increased, and the wetland performance and the snow performance of the tire are ensured.
The tire also comprises shoulder patterns 60 symmetrically arranged on the shoulder parts of the tire, wherein the shoulder patterns are arranged on the outer sides of the edge block patterns, the shoulder pattern blocks are provided with vertical grooves 61 which are vertical to the central line of the tire, so that the drainage can be promoted, and the ground grabbing performance of the tire can be improved
As shown in fig. 1, a steel sheet pattern 3 in a sine wave shape is arranged on the tire pattern, and the steel sheet pattern is provided with a deep part 5 with a larger depth and a shallow part 4 with a smaller depth.
In order to ensure the rigidity uniformity of the pattern blocks and prevent abnormal abrasion of the tire, the invention optimally designs the tread steel sheets, and different numbers of steel sheet patterns are arranged according to the pattern block areas of the central pattern and the edge block patterns; for the first foot-shaped pattern block 11 and the second foot-shaped pattern block 12, 13 steel sheet patterns are arranged on the pattern block with larger area, and 11 steel sheet patterns are arranged on the pattern block with smaller area; for the middle block pattern, 24 steel sheet patterns are arranged on the pattern block with larger area, and 20 steel sheet patterns are arranged on the pattern block with smaller area; for the edge pattern blocks, 6, 5 and 4 steel sheet patterns are sequentially arranged according to the sequence from large to small in area; the space between the steel sheet patterns of each region is 4.8 mm-5.1 mm; the steel sheet patterns on each pattern block are uniformly distributed, so that each pattern block has consistent pattern rigidity, and abnormal abrasion of the tire can be prevented.
As shown in FIG. 4, the middle part of the steel sheet pattern is sine wave-shaped, the two ends of the steel sheet pattern are straight, and the width w of the steel sheet pattern is 0.3-0.6 mm.
The steel sheet pattern is provided with a deep part with larger depth and a shallow part with smaller depth, when the length L of the steel sheet pattern is less than or equal to 25mm, the steel sheet pattern is provided with one deep part and two shallow parts, the depth of two ends of the steel sheet pattern is d1, the length is L1, and the rest parts of the steel sheet pattern are deep parts and the depth is d; when the length L of the steel sheet is more than 25mm, the steel sheet pattern is provided with two deep parts and three shallow parts, the depth of the shallow parts at the two ends of the steel sheet pattern and the middle position is d1, the length of the shallow parts at the two ends is L1, the length of the shallow parts at the middle position is L2, the steel sheet pattern and the part are the deep parts arranged at the two sides of the shallow parts at the middle position, and the depth of the deep parts is d; the range of the values of the parameters is as follows: l1 is more than or equal to 3mm and less than or equal to 5mm, L2 is more than or equal to 2.4mm and less than or equal to 4.0mm, d1 is more than or equal to 1.0mm and less than or equal to 3.0mm, and d=7mm; according to different lengths of the steel sheet patterns, the bottom area is designed into a pattern with different depths, so that the rigidity of the steel sheet patterns can be improved, and abnormal abrasion of the tire can be prevented.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a single embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
Claims (7)
1. Winter tyre with staggered blocks, comprising a tread portion (1), a shoulder portion (2) and tyre patterns arranged on the tread portion and the shoulder portion along the tyre circumference, characterized in that: the tire pattern comprises a center pattern positioned at the center of the tread and side block patterns (50) positioned at two sides of the center pattern, the center pattern comprises a guide part (10) positioned at the center line of the tire and middle block patterns (30) positioned at two sides of the guide part, a first transverse groove (31) is arranged between any two adjacent middle block patterns, a first transverse groove adjacent to the middle block patterns forms a class A pattern section, a second transverse groove (51) is arranged between any two adjacent side block patterns (50), a class B pattern section is formed between any one side block pattern and one second transverse groove adjacent to the other side block pattern section, the number of pattern pitches possessed by the class A pattern section is different from the number of pattern pitches possessed by the class B pattern section, and the dislocation value x=5.6 mm-8.0 mm in the circumferential direction of the first pattern section of the class A pattern section and the first pattern section of the class B pattern section;
The A-type pattern section comprises two pattern pitches, and the B-type pattern section comprises three pattern pitches;
The guide part comprises a first foot-shaped pattern block (11) and a second foot-shaped pattern block (12), and the first foot-shaped pattern block and the second foot-shaped pattern block are alternately arranged at two sides of the central line of the tire along the extending direction of the guide part (10); a first groove (13) is arranged between any one of the first foot-shaped pattern blocks and a second pattern block closest to the first foot-shaped pattern block; a second groove (14) is arranged between any two adjacent first foot-shaped pattern blocks and between any two adjacent second foot-shaped pattern blocks; one end of the second groove is communicated with the first groove, and the other end of the second groove is communicated with the first longitudinal main groove (20);
The two sides of the middle block pattern (30) are respectively a first side and a second side, a third groove (32) is arranged on the first side of any middle block pattern, a fourth groove (34) is arranged on the second side of any middle block pattern, a fifth groove (33) is arranged in the middle of the middle block pattern, one end of the third groove (32) is communicated with a first transverse groove close to the first side, the other end of the third groove is communicated with a first end of the fifth groove, one end of the fourth groove (34) is communicated with the first transverse groove close to the second side, the other end of the fourth groove is communicated with a second end of the fifth groove, and the third groove (32), the fourth groove (34) and the fifth groove (33) form a rough I shape; a substantially cross-shape is formed between any one of the first lateral grooves (31), the third grooves (32) on the intermediate block pattern (30) on one side of the first lateral groove, and the fourth grooves (34) on the intermediate block pattern on the other side of the first lateral groove.
2. A winter tyre with staggered blocks as claimed in claim 1, wherein: the pattern pitch of the two patterns included in the type-A pattern joint is a first pattern pitch PA and a second pattern pitch PB, the second pattern pitch PB=49.0 mm-54.0 mm, and the first pattern pitch PA and the second pattern pitch PB have the following relation: PB/pa=1.10 to 1.50.
3. A winter tyre with staggered blocks as claimed in claim 1, wherein: the three pattern pitches included in the class B pattern joint are a third pattern pitch PC, a fourth pattern pitch PD and a fifth pattern pitch PE, respectively, wherein the fourth pattern pitch pd=33.0 mm-38.00 mm, and the third pattern pitch PC, the fourth pattern pitch PD and the fifth pattern pitch PE have the following relationship: PC/pd=1.10 to 1.50, PD/pe=1.06 to 1.40.
4. A winter tyre with staggered blocks as claimed in claim 1, wherein: on any radial section of the tire, the outer contour from the tread center to the upper end point (D) on one side of the tread is sequentially divided into a first segment arc (71) and a second segment arc (72), the inner contour from the tread center to the lower end point (C) on one side of the tread is sequentially divided into a third segment arc (73), a fourth segment arc (74) and a fifth segment arc (75), and the following relations are formed among the radius R1 of the first segment arc, the radius R2 of the second segment arc, the radius R3 of the third segment arc, the radius R5 of the fifth segment arc, the width SW of the widest part of the tire and the arc length TDW of the tread: TDW/sw=0.8 to 0.9, r2/sw=36.5 to 45, r3/sw=0.14 to 0.2, r5=25 mm to 50mm; the relationship among the arc length L1 of the first segment of arc, the arc length TDW of the tread, the radial height SDH from the widest part of the tire to the heel and the radial height SH from the highest point of the tire to the heel is as follows: L1/(TDW/2) =0.45 to 0.6, sdh/sh=0.42 to 0.58.
5. A winter tyre with staggered blocks as claimed in claim 1, wherein: a first longitudinal main groove (20) is arranged between the guide part (10) and the middle block pattern (30), a second longitudinal main groove (40) is arranged between the middle block pattern and the side block pattern (50), the width f=7mm-14 mm of the first longitudinal main groove, and the width E of the second longitudinal main groove and the width F of the first longitudinal main groove have the following relation: f/e=0.40 to 0.80.
6. A winter tyre with staggered blocks as claimed in claim 1, wherein: the tire further comprises shoulder patterns (60) symmetrically arranged on the tire shoulder, the shoulder patterns are arranged on the outer sides of the edge block patterns, and vertical grooves (61) are formed in the shoulder pattern blocks.
7. Winter tyre with staggered blocks according to claim 1, characterized in that the tread pattern is provided with a sinusoidal steel sheet pattern (3) having deep portions (5) of greater depth and shallow portions (4) of lesser depth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421104.9A CN111016546B (en) | 2019-12-31 | 2019-12-31 | Winter tyre with staggered pattern blocks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421104.9A CN111016546B (en) | 2019-12-31 | 2019-12-31 | Winter tyre with staggered pattern blocks |
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| CN111016546A CN111016546A (en) | 2020-04-17 |
| CN111016546B true CN111016546B (en) | 2024-04-23 |
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| CN201911421104.9A Active CN111016546B (en) | 2019-12-31 | 2019-12-31 | Winter tyre with staggered pattern blocks |
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| CN111016546A (en) | 2020-04-17 |
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