Tire

Abstract

The utility model provides a kind of tire, the tread of tire is provided with pattern structure, pattern structure includes: multiple longitudinal grooves, each longitudinal groove is along the circumferential extension of tire, multiple longitudinal grooves are spaced along the width direction of tire, to separate the tread of tire into multiple tread pattern parts;Communication groove, set on tread pattern part, tread pattern part has two sides of two sides relatively set in tread pattern part along width direction, two ends of communication groove respectively extend to two sides;Recess, set on tread pattern part, one end of recess is communicated with one of two sides of tread pattern part, the other end of recess is spaced apart from another of two sides of tread pattern part;Wherein, at least part communication groove and at least part recess are all arc-shaped setting.The utility model effectively solves the problem that the tire of prior art golf cart is more harmful to golf course turf.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, and more specifically, to a tire. Background Technology

[0002] Currently, with the increase in leisure activities, golf is gradually becoming more popular. Because golf courses cover a large area and the balls travel long distances, staff need to use golf carts to reach the target area to retrieve them. Furthermore, while some parts of a golf course are paved with good conditions, the majority is covered with expensive specialized turf. Therefore, the requirements for golf cart tires are correspondingly higher.

[0003] However, to facilitate the driving of golf carts on complex terrain, most golf carts currently use off-road tire tread designs, which cause greater damage to the turf and increase the maintenance costs of golf courses. Utility Model Content

[0004] The main purpose of this invention is to provide a tire that solves the problem that existing golf cart tires cause significant damage to golf course turf.

[0005] To achieve the above objectives, this utility model provides a tire with a tread pattern structure, the tread pattern structure including: multiple longitudinal grooves, each longitudinal groove extending along the circumference of the tire, the multiple longitudinal grooves being spaced apart along the width direction of the tire to divide the tire tread into multiple tread pattern portions; a connecting groove disposed on the tread pattern portion, the tread pattern portion having two side surfaces disposed opposite each other along the width direction, the two ends of the connecting groove extending to the two side surfaces respectively; and a recess disposed on the tread pattern portion, one end of the recess communicating with one of the two side surfaces of the tread pattern portion, the other end of the recess being spaced apart from the other of the two side surfaces of the tread pattern portion; wherein, at least a portion of the connecting groove and at least a portion of the recess are arc-shaped.

[0006] Furthermore, the plurality of tread patterns include two shoulder tread patterns and a plurality of intermediate tread patterns located between the two shoulder tread patterns. The shoulder tread pattern has two side surfaces disposed opposite each other on both sides of the shoulder tread pattern along the width direction. A connecting groove disposed on the shoulder tread pattern is a first connecting groove. The first connecting groove includes a first sub-connecting groove and a second sub-connecting groove that are interconnected. The end of the first sub-connecting groove away from the second sub-connecting groove and the end of the second sub-connecting groove away from the first sub-connecting groove extend to the two side surfaces of the shoulder tread pattern, respectively. The first sub-connecting groove and the second sub-connecting groove are respectively located on both sides of the tire shoulder. The width of the first sub-connecting groove gradually increases along the direction from the intermediate tread pattern to the shoulder tread pattern. And / or, the width of the second sub-connecting groove gradually decreases along the direction from the intermediate tread pattern to the shoulder tread pattern.

[0007] Furthermore, the recess provided on the tire shoulder tread portion is a first recess, which includes a first sub-recess and a second sub-recess that are interconnected. The end of the first sub-recess away from the second sub-recess extends to one of the two sides of the tire shoulder tread portion, and the end of the second sub-recess away from the first sub-recess is spaced apart from the other side of the two sides of the tire shoulder tread portion. The first sub-recess and the second sub-recess are respectively located on both sides of the tire shoulder, and the width of the first sub-recess gradually increases along the direction from the intermediate tread portion to the tire shoulder tread portion; and / or, the width of the second sub-recess gradually decreases along the direction from the intermediate tread portion to the tire shoulder tread portion.

[0008] Furthermore, the plurality of intermediate tread portions include a central tread portion, which passes through the center surface S of the tire. The central tread portion has two side surfaces disposed opposite each other on both sides of the central tread portion along the width direction. The connecting groove located on the central tread portion is a second connecting groove, which includes a third sub-connecting groove and at least two fourth sub-connecting grooves. The at least two fourth sub-connecting grooves are respectively connected to both ends of the third sub-connecting groove, and the ends of the at least two fourth sub-connecting grooves away from the third sub-connecting groove extend to the side surface of the central tread portion. The width of the third sub-connecting groove is smaller than the width of the fourth sub-connecting groove, and at least a portion of the third sub-connecting groove is arc-shaped.

[0009] Furthermore, the recess on the central tread portion includes at least two second recesses, which extend to the two sides of the central tread portion respectively. The depth D1 of the second recesses satisfies: 0mm < D1 ≤ 5mm; wherein, the depth of the second recesses gradually decreases along the direction from the shoulder tread portion to the central tread portion; and / or, the width of the second recesses gradually decreases along the direction from the shoulder tread portion to the central tread portion.

[0010] Furthermore, the intermediate tread pattern also includes a crown tread pattern, which is located between the central tread pattern and the shoulder tread pattern. The connecting groove on the crown tread pattern is a third connecting groove, which is correspondingly provided with the first connecting groove.

[0011] Furthermore, the tread pattern portion has two side surfaces disposed opposite to each other on both sides of the tread pattern portion along the width direction, and the recesses on the tread pattern portion include a third recess and a fourth recess, the third recess and the fourth recess extending to the two side surfaces of the tread pattern portion respectively; wherein, the width of the third recess is less than the width of the fourth recess, and the fourth recess is correspondingly disposed with the fourth sub-connecting groove; and / or, the depth D2 of the third recess satisfies: 4.8mm≤D2≤5.2mm; and / or, the width W11 of the third recess satisfies: 1.3mm≤W11≤1.7mm.

[0012] Furthermore, the tread structure also includes multiple pitch tread units arranged circumferentially along the tire. The width W21 of the end of the first sub-recess away from the second sub-recess, the width W22 of the end of the first sub-recess connected to the second sub-recess, the width W23 of the end of the second sub-recess away from the first sub-recess, and the length P of the pitch tread unit satisfy the following: 0.008P≤W21≤0.012P, 0.015P≤W22≤0.019P, 0.005P≤W23≤0.009P.

[0013] Furthermore, the tread structure also includes multiple pitch tread units arranged circumferentially along the tire. The width W24 of the fourth recess extending to one end of the side of the crown tread portion satisfies the following relationship with the length P of the pitch tread unit: 0.013P≤W24≤0.017P; and / or, the width W31 of the third sub-connecting groove satisfies the following relationship with the length P of the pitch tread unit: 0.008P≤W31≤0.012P; and / or, the width W32 of the fourth sub-connecting groove extending to one end of the side of the center tread portion satisfies the following relationship with the length P of the pitch tread unit: 0.013P≤W32≤0.017P.

[0014] Furthermore, the contact portion between the tire and the driving surface has a width T, and the tread structure also includes multiple pitch tread units arranged circumferentially along the tire. These multiple pitch tread units include a first tread group, a second tread group, and a third tread group. The width W40 of the central tread portion satisfies the following condition with respect to width T: 0.076T≤W40≤0.08T; and / or, the width W41 of the crown tread portion within the first tread group and the width W42 of the shoulder tread portion within the first tread group satisfy the following condition: 0.46W42≤W41≤0.57W42; the widths W41 and W42 of the crown tread portion and the shoulder tread portion within the first tread group satisfy the following condition with respect to width T: 0.12T≤W41≤0.14T, 0.24T≤W42≤0.26T; the widths W41 and W42 of the crown tread portion within the second tread group satisfy the following condition with respect to width T: 0.12T≤W41≤0.14T, 0.24T≤W42≤0.26T; the widths W41 and W42 of the crown tread portion within the second tread group satisfy the following condition with respect to width T: 0.12T≤W41≤0.14T, 0.24T≤W42≤0.26T. The width W41 of the tire crown tread and the width W42 of the shoulder tread within the second tread group satisfy the following: 0.59W42≤W41≤0.72W42. The widths W41 and W42 of the tire crown tread within the second tread group, and the width T satisfy the following: 0.14T≤W41≤0.16T, 0.22T≤W42≤0.24T. The widths W41 and W42 of the tire crown tread within the third tread group satisfy the following: 0.74W42≤W41≤0.89W42. The widths W41 and W42 of the tire crown tread within the third tread group, and the width T satisfy the following: 0.16T≤W41≤0.18T, 0.20T≤W42≤0.22T.

[0015] Applying the technical solution of this utility model, the tire tread is provided with a tread structure. Each longitudinal groove of the tread structure extends circumferentially along the tire, and multiple longitudinal grooves are spaced apart along the width direction of the tire to divide the tire tread into multiple tread pattern portions. Connecting grooves are provided on the tread pattern portions. Each tread pattern portion has two side surfaces disposed opposite each other along its width direction, and the two ends of the connecting grooves extend to the two side surfaces respectively. Recesses are provided on the tread pattern portions, one end of which connects to one of the two side surfaces of the tread pattern portion, and the other end of which is spaced apart from the other of the two side surfaces of the tread pattern portion; wherein, at least a portion of the connecting grooves and at least a portion of the recesses are arc-shaped. In this way, when the golf cart is in motion, the connecting grooves and recesses on the tire shoulder and center treads increase the grip between the tire and the road surface, ensuring the tire's traction under complex road conditions, thus guaranteeing the tire's driving stability and handling. On the other hand, they reduce the rigidity of the tread, increasing the contact area between the tire and the road surface during rolling, balancing the tire's ground pressure, reducing the pressure on the golf course turf, and minimizing tire damage to the turf, thus protecting the golf course turf and solving the problem of excessive damage to golf course turf caused by existing golf cart tires. Simultaneously, the connecting grooves drain water accumulated between the center tread and the road surface into the longitudinal grooves, and water accumulated between the tire shoulder and the road surface into the longitudinal grooves and the tire shoulder, ensuring the tire's drainage performance and anti-slip performance. Furthermore, in conjunction with the recesses, they break the water film between the tire and the road surface, increasing the friction between the tire and the road surface, ensuring the tire's wet handling and driving safety. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A partial front view of an embodiment of the tire tread structure according to the present invention is shown.

[0018] The above figures include the following reference numerals:

[0019] 10. Longitudinal groove; 11. First longitudinal groove; 12. Second longitudinal groove;

[0020] 20. Tire shoulder pattern area;

[0021] 30. Middle pattern section; 31. Central pattern section; 32. Crown pattern section;

[0022] 40. Connecting trench; 41. First connecting trench; 411. First sub-connecting trench; 412. Second sub-connecting trench; 42. Second connecting trench; 421. Third sub-connecting trench; 422. Fourth sub-connecting trench; 43. Third connecting trench;

[0023] 50. Recessed part; 51. First recessed part; 511. First sub-recessed part; 512. Second sub-recessed part; 52. Second recessed part; 53. Third recessed part; 54. Fourth recessed part;

[0024] 61. First pattern group; 62. Second pattern group; 63. Third pattern group. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] To address the problem that existing golf cart tires cause significant damage to golf course turf, this application provides a tire.

[0029] like Figure 1 As shown, the tire tread has a tread pattern, which includes multiple longitudinal grooves 10, connecting grooves 40, and recesses 50. Each longitudinal groove 10 extends circumferentially along the tire, and the multiple longitudinal grooves 10 are spaced apart along the width direction of the tire to divide the tire tread into multiple tread pattern portions. Connecting grooves 40 are provided on the tread pattern portions, which have two sides disposed opposite each other along the width direction. The two ends of the connecting groove 40 extend to the two sides respectively. Recesses 50 are provided on the tread pattern portions, with one end of the recess connected to one of the two sides of the tread pattern portion, and the other end of the recess spaced apart from the other side of the tread pattern portion. At least a portion of the connecting grooves 40 and at least a portion of the recesses 50 are arc-shaped.

[0030] Using the technical solution of this embodiment, the tire tread is provided with a tread structure. Each longitudinal groove 10 of the tread structure extends along the circumference of the tire, and multiple longitudinal grooves 10 are spaced apart along the width direction of the tire to divide the tire tread into multiple tread pattern portions. A connecting groove 40 is provided on the tread pattern portion. The tread pattern portion has two side surfaces disposed opposite each other on both sides of the tread pattern portion along the width direction, and the two ends of the connecting groove 40 extend to the two side surfaces respectively. A recess 50 is provided on the tread pattern portion, one end of the recess 50 is connected to one of the two side surfaces of the tread pattern portion, and the other end of the recess 50 is spaced apart from the other of the two side surfaces of the tread pattern portion; wherein, at least a portion of the connecting groove 40 and at least a portion of the recess 50 are arc-shaped. In this way, when the golf cart is in motion, the connecting grooves 40 and recesses 50 on the shoulder tread portion 20 and the middle tread portion 30 can, on the one hand, increase the gripping force between the tire and the driving surface, ensuring the tire's grip under complex road conditions, thereby ensuring the tire's driving stability and handling; on the other hand, they can reduce the rigidity of the tread, increase the contact area between the tire and the driving surface during tire rolling, balance the tire's ground pressure, reduce the pressure on the golf course turf, reduce the damage of the tire to the golf course turf, and achieve protection of the golf course turf, thus solving the problem of the large amount of damage to the golf course turf caused by the tires of golf carts in the prior art. Meanwhile, the arrangement of the connecting groove 40 can, on the one hand, drain the water accumulated between the middle tread portion 30 and the driving surface into the longitudinal groove 10, and drain the water accumulated between the tire shoulder tread portion 20 and the driving surface into the longitudinal groove 10 and the tire shoulder, ensuring the tire's drainage performance and anti-slip performance; on the other hand, it can combine with the recess 50 to break the water film between the tire and the driving surface, increasing the friction between the tire and the driving surface, ensuring the tire's wet handling and driving safety.

[0031] In this embodiment, the depth of the longitudinal groove 10 is 8.8 mm, which ensures both the tire's water drainage performance and its wear resistance.

[0032] like Figure 1As shown, the multiple tread patterns include two shoulder tread patterns 20 and multiple intermediate tread patterns 30 located between the two shoulder tread patterns 20. The shoulder tread pattern 20 has two side surfaces that are disposed opposite each other on both sides of the shoulder tread pattern 20 along the width direction. The connecting groove 40 disposed on the shoulder tread pattern 20 is a first connecting groove 41. The first connecting groove 41 includes a first sub-connecting groove 411 and a second sub-connecting groove 412 that are connected to each other. The end of the first sub-connecting groove 411 away from the second sub-connecting groove 412 and the end of the second sub-connecting groove 412 away from the first sub-connecting groove 411 extend to the two side surfaces of the shoulder tread pattern 20, respectively. The first sub-connecting groove 411 and the second sub-connecting groove 412 are located on both sides of the tire shoulder, respectively. The width of the first sub-connecting groove 411 gradually increases along the direction from the middle tread portion 30 to the shoulder tread portion 20; and / or, the width of the second sub-connecting groove 412 gradually decreases along the same direction. In this way, the first connecting groove 41 can, on the one hand, drain water accumulated between the longitudinal groove 10 and the shoulder tread portion 20 and the driving surface, ensuring the drainage performance of the shoulder tread portion 20 and improving the tire's drainage performance and anti-slip properties; on the other hand, it can break the water film between the shoulder tread portion 20 and the driving surface, increasing the friction between the shoulder tread portion 20 and the driving surface, ensuring the wet handling performance of the shoulder tread portion 20. Meanwhile, the width variation of the first connecting groove 41 through the first sub-connecting groove 411 and the second sub-connecting groove 412 creates a structure where the first connecting groove 41 is wider in the middle and gradually narrows towards both ends. This ensures good drainage performance and grip while balancing the rigidity of the tire shoulder tread 20, reducing stress on the tire shoulder tread 20, and minimizing damage to the golf course turf, thus further protecting the turf. Simultaneously, the first connecting groove 41 increases the engagement force between the tire shoulder tread 20 and the driving surface, shortening the tire's braking distance and improving traction and safety.

[0033] like Figure 1As shown, the recess 50 provided on the tire shoulder tread portion 20 is a first recess 51. The first recess 51 includes a first sub-recess 511 and a second sub-recess 512 that are interconnected. The end of the first sub-recess 511 away from the second sub-recess 512 extends to one of the two sides of the tire shoulder tread portion 20. The end of the second sub-recess 512 away from the first sub-recess 511 is spaced apart from the other side of the two sides of the tire shoulder tread portion 20. The first sub-recess 511 and the second sub-recess 512 are respectively located on both sides of the tire shoulder. Along the direction from the intermediate tread portion 30 to the tire shoulder tread portion 20, the width of the first sub-recess 511 gradually increases; and / or, along the direction from the intermediate tread portion 30 to the tire shoulder tread portion 20, the width of the second sub-recess 512 gradually decreases. In this way, the first recess 51 can further break through the water film between the tire shoulder tread 20 and the driving surface, increasing the friction between the tire shoulder tread 20 and the driving surface, and improving the wet handling and anti-slip performance of the tire shoulder tread 20. At the same time, through the width variation of the first sub-recess 511 and the second sub-recess 512, the first recess 51 forms a structure that is wider in the middle and narrower at both ends. This allows the first recess 51 to balance the rigidity of the tire shoulder tread 20 and balance the ground contact pressure of the tire shoulder tread 20. While ensuring the grip of the tire shoulder tread 20, it also reduces the damage of the tire shoulder tread 20 to the golf course turf, thus improving the protection of the golf course turf.

[0034] like Figure 1As shown, the plurality of intermediate tread portions 30 include a central tread portion 31, which passes through the center surface S of the tire. The central tread portion 31 has two side surfaces disposed opposite each other on both sides of the central tread portion 31 along the width direction. The connecting groove 40 located on the central tread portion 31 is a second connecting groove 42, which includes a third sub-connecting groove 421 and at least two fourth sub-connecting grooves 422. The at least two fourth sub-connecting grooves 422 are respectively connected to the two ends of the third sub-connecting groove, and the ends of the at least two fourth sub-connecting grooves 422 away from the third sub-connecting groove 421 extend to the side surface of the central tread portion 31. The width of the third sub-connecting groove 421 is smaller than the width of the fourth sub-connecting groove 422, and at least a portion of the third sub-connecting groove 421 is arc-shaped. In this way, the second connecting groove 42 breaks the water film between the central tread portion 31 and the driving surface, increases the friction between the central tread portion 31 and the driving surface, and ensures the wet handling performance of the central tread portion 31. Meanwhile, the way the widths of the third sub-connecting groove 421 and the fourth sub-connecting groove 422 are set makes the second connecting groove 42 form a structure with a narrower width in the middle and gradually wider width towards both ends. On the one hand, this allows the second connecting groove 42 to quickly drain the water accumulated between the center tread portion 31 and the driving surface into the longitudinal grooves 10 on both sides, improving the drainage performance of the center tread portion 31, thereby improving the tire's drainage performance and anti-slip performance. On the other hand, it can reduce the rigidity of the center tread portion 31, balance the ground pressure of the center tread portion 31, ensure the grip and drainage performance of the center tread portion 31, reduce the damage of the center tread portion 31 to the golf course turf, and improve the protection of the golf course turf.

[0035] In this embodiment, the pattern structure is arranged in a centrally symmetrical manner, and the central pattern part 31 is symmetrically distributed with respect to the central surface S.

[0036] like Figure 1 As shown, the recess 50 located on the central tread portion 31 includes at least two second recesses 52, which extend to two sides of the central tread portion 31 respectively. The depth D1 of the second recesses 52 satisfies: 0mm < D1 ≤ 5mm. Specifically, the depth of the second recesses 52 gradually decreases along the direction from the shoulder tread portion 20 to the central tread portion 31; and / or, the width of the second recesses 52 gradually decreases along the direction from the shoulder tread portion 20 to the central tread portion 31. This arrangement of the second recesses 52 balances the rigidity of the central tread portion 31, better distributes the ground contact pressure of the central tread portion 31, further reduces damage to the golf course turf caused by the central tread portion 31, and also reduces abnormal wear of the central tread portion 31, ensuring the wear resistance of the central tread portion 31 and extending the tire's service life.

[0037] like Figure 1As shown, the intermediate tread portion 30 also includes a crown tread portion 32, which is located between the central tread portion 31 and the shoulder tread portion 20. The connecting groove 40 on the crown tread portion 32 is a third connecting groove 43, which corresponds to the first connecting groove 41. In this way, the third connecting groove 43 can break the water film between the crown tread portion 32 and the driving surface, increasing the friction between the crown tread portion 32 and the driving surface, thus ensuring the wet handling performance of the crown tread portion 32. Simultaneously, the third connecting groove 43 can drain accumulated water between the crown tread portion 32 and the driving surface into the longitudinal grooves 10 on both sides, ensuring the drainage performance of the crown tread portion 32 and improving the tire's anti-slip performance and wet handling performance. Meanwhile, the third connecting groove 43 can connect with the first connecting groove to form a through groove that runs through most of the tire tread. This improves the tire's drainage performance, reduces the tire's rigidity, balances the tire's ground contact pressure, ensures the gripping force between the tire and the driving surface, improves the tire's driving stability and safety, and also enhances the protection of the golf course turf.

[0038] like Figure 1 As shown, the tread pattern portion 32 has two side surfaces that are disposed opposite to each other on both sides of the tread pattern portion 32 along the width direction. The recess 50 located on the tread pattern portion 32 includes a third recess 53 and a fourth recess 54, which extend to the two side surfaces of the tread pattern portion 32 respectively. The width of the third recess 53 is smaller than the width of the fourth recess 54, and the fourth recess 54 is correspondingly disposed with the fourth sub-connecting groove 422. And / or, the depth D2 of the third recess 53 satisfies: 4.8mm≤D2≤5.2mm; and / or, the width W11 of the third recess 53 satisfies: 1.3mm≤W11≤1.7mm. In this way, the arrangement of the third recess 53 and the fourth recess 54 can balance the rigidity of the tread pattern 32, better distribute the ground pressure of the tread pattern 32, further reduce the damage of the tread pattern 32 to the golf course turf, reduce abnormal wear of the tread pattern 32, ensure the wear resistance of the tread pattern 32, and extend the service life of the tire.

[0039] In this embodiment, the depth D2 of the third recess 53 satisfies: D2=5.0mm, to ensure that the value of the depth D2 of the third recess 53 is appropriate.

[0040] In this embodiment, the width W11 of the third recess 53 satisfies: W11=1.5mm, to ensure that the value of the width W11 of the third recess 53 is appropriate.

[0041] In this embodiment, the extension direction of the third recess 53 is set at an angle of 65° to 75° with the circumferential direction of the tire.

[0042] like Figure 1 As shown, the tread pattern also includes multiple pitch tread units arranged circumferentially along the tire. The width W21 of the end of the first sub-recess 511 away from the second sub-recess 512, the width W22 of the end of the first sub-recess 511 that connects to the second sub-recess 512, the width W23 of the end of the second sub-recess 512 away from the first sub-recess 511, and the length P of the pitch tread unit satisfy the following: 0.008P≤W21≤0.012P, 0.015P≤W22≤0.019P, 0.005P≤W23≤0.009P. In this way, the arrangement of multiple pitch tread units can disperse the sound wave frequency when the tire contacts the ground, effectively reducing single-frequency resonance noise, lowering tire driving noise, and improving tire comfort. Meanwhile, the above-mentioned proportional relationship allows the width of the first sub-recess 511 and the second sub-recess 512 to match different pitch pattern units, ensuring that the width variation of the first recess 51 on the tire shoulder pattern 20 is more appropriate, further balancing the rigidity of the tire shoulder pattern 20 and improving the grounding uniformity of the tire shoulder pattern 20.

[0043] like Figure 1 As shown, the tread structure also includes multiple pitch tread units arranged circumferentially along the tire. The width W24 of the fourth recess 54 extending to one end of the side of the crown tread portion 32 satisfies the following relationship with the length P of the pitch tread unit: 0.013P≤W24≤0.017P; and / or, the width W31 of the third sub-connecting groove 421 satisfies the following relationship with the length P of the pitch tread unit: 0.008P≤W31≤0.012P; and / or, the width W32 of the fourth sub-connecting groove 422 extending to one end of the side of the central tread portion 31 satisfies the following relationship with the length P of the pitch tread unit: 0.013P≤W32≤0.017P. In this way, the above-mentioned arrangement allows the fourth recess 54 and the third connecting groove 43 to match different pitch tread units, ensuring that the width variation of the fourth recess 54 and the third connecting groove 43 on the tread portion 32 is more appropriate, further balancing the rigidity of the tread portion 32, improving the grounding uniformity of the tread portion 32, and also improving the drainage performance of the tread portion 32.

[0044] like Figure 1As shown, the contact portion between the tire and the driving surface has a width T. The tread structure also includes multiple pitch tread units arranged circumferentially along the tire. The multiple pitch tread units include a first tread group 61, a second tread group 62, and a third tread group 63. The width W40 of the central tread portion 31 satisfies the following relationship with the width T: 0.076T ≤ W40 ≤ 0.08T; and / or, the width W41 of the crown tread portion 32 located within the first tread group 61 is equal to the width T of the central tread portion 31. The width W42 of the shoulder tread portion 20 within tread pattern group 61 satisfies: 0.46W42≤W41≤0.57W42. The width W41 of the crown tread portion 32 within the first tread pattern group 61, the width W42 of the shoulder tread portion 20 within the first tread pattern group 61, and the width T satisfy: 0.12T≤W41≤0.14T, 0.24T≤W42≤0.26T; the width T of the crown tread portion 32 within the second tread pattern group 62... The width W41 and the width W42 of the shoulder tread portion 20 located in the second tread group 62 satisfy the following condition: 0.59W42≤W41≤0.72W42. The width W41 of the crown tread portion 32 located in the second tread group 62, the width W42 of the shoulder tread portion 20 located in the second tread group 62, and the width T satisfy the following condition: 0.14T≤W41≤0.16T, 0.22T≤W42≤0.24T; the width T of the third tread group 63... The width W41 of the tread pattern 32 within the inner tread group 63 and the width W42 of the shoulder tread pattern 20 within the third tread group 63 satisfy the following relationship: 0.74W42≤W41≤0.89W42. Similarly, the widths W41 and W42 of the tread pattern 32 and shoulder tread pattern 20 within the third tread group 63, and the width T, satisfy the following relationships: 0.16T≤W41≤0.18T, 0.20T≤W42≤0.22T. This arrangement of multiple pitch tread units adapts to the width variations of each tread section, optimizing the width of each tread section within different pitch tread units. This adapts to various road conditions and ensures stable contact between the tire and the road surface. Furthermore, this design results in a more suitable contact area for each tread section, reducing the pressure exerted by the tire on the golf course turf per unit area, thus minimizing damage and enhancing the protection of the golf course turf.

[0045] In this embodiment, the width W40 of the central pattern portion 31 satisfies the following relationship with the width T: W40 = 0.78T.

[0046] In this embodiment, the area of ​​the tread pattern is 0.73 to 0.77 times the area between the tire and the driving surface.

[0047] In this embodiment, the longitudinal groove 10 includes a first longitudinal groove 11 and a second longitudinal groove 12. The first longitudinal groove 11 is adjacent to the shoulder tread portion 20, and the second longitudinal groove 12 is located between the crown tread portion 32 and the center tread portion 31. The width W51 of the first longitudinal groove 11 satisfies the following condition with respect to its width T: 0.016T≤W51≤0.026T. The width W52 of the second longitudinal groove 12 satisfies the following condition with respect to its width T: 0.01T≤W52≤0.02T. This ensures that the tire has sufficient contact area with the ground while improving drainage performance.

[0048] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0049] The tire tread has a tread pattern, with each longitudinal groove extending circumferentially along the tire. Multiple longitudinal grooves are spaced apart along the width of the tire to divide the tread into multiple tread pattern portions. Connecting grooves are provided on the tread pattern portions. Each tread pattern portion has two side surfaces opposite each other along its width, and the two ends of the connecting grooves extend to the two side surfaces respectively. Recesses are provided on the tread pattern portions, with one end of the recess connected to one of the two side surfaces of the tread pattern portion, and the other end of the recess spaced apart from the other of the two side surfaces of the tread pattern portion; wherein at least some of the connecting grooves and at least some of the recesses are arc-shaped. In this way, when the golf cart is in motion, the connecting grooves and recesses on the tire shoulder and center treads increase the grip between the tire and the road surface, ensuring the tire's traction under complex road conditions, thus guaranteeing the tire's driving stability and handling. On the other hand, they reduce the rigidity of the tread, increasing the contact area between the tire and the road surface during rolling, balancing the tire's ground pressure, reducing the pressure on the golf course turf, and minimizing tire damage to the turf, thus protecting the golf course turf and solving the problem of excessive damage to golf course turf caused by existing golf cart tires. Simultaneously, the connecting grooves drain water accumulated between the center tread and the road surface into the longitudinal grooves, and water accumulated between the tire shoulder and the road surface into the longitudinal grooves and the tire shoulder, ensuring the tire's drainage performance and anti-slip performance. Furthermore, in conjunction with the recesses, they break the water film between the tire and the road surface, increasing the friction between the tire and the road surface, ensuring the tire's wet handling and driving safety.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire, characterized in that, The tire tread has a tread pattern, the tread pattern comprising: Multiple longitudinal grooves (10), each of the longitudinal grooves (10) extends along the circumference of the tire, and the multiple longitudinal grooves (10) are spaced apart along the width direction of the tire to divide the tire tread into multiple tread pattern portions. A connecting groove (40) is provided on the tread pattern portion, the tread pattern portion having two side surfaces disposed opposite each other on both sides of the tread pattern portion along the width direction, and the two ends of the connecting groove (40) extend to the two side surfaces respectively. A recess (50) is provided on the tread pattern portion. One end of the recess (50) is connected to one of the two sides of the tread pattern portion, and the other end of the recess (50) is spaced apart from the other side of the tread pattern portion. In this configuration, at least a portion of the connecting groove (40) and at least a portion of the recess (50) are arc-shaped.

2. The tire according to claim 1, characterized in that, The plurality of said tread patterns include two shoulder tread patterns (20) and a plurality of intermediate tread patterns (30) located between the two shoulder tread patterns (20), wherein the shoulder tread patterns (20) have two side surfaces disposed opposite to each other on both sides of the shoulder tread patterns (20) in the width direction. The connecting groove (40) provided on the shoulder tread portion (20) is a first connecting groove (41). The first connecting groove (41) includes a first sub-connecting groove (411) and a second sub-connecting groove (412) that are connected to each other. The end of the first sub-connecting groove (411) away from the second sub-connecting groove (412) and the end of the second sub-connecting groove (412) away from the first sub-connecting groove (411) respectively extend to the two sides of the shoulder tread portion (20). Wherein, the first sub-connecting groove (411) and the second sub-connecting groove (412) are respectively located on both sides of the tire shoulder, and along the direction from the intermediate tread portion (30) to the shoulder tread portion (20), the width of the first sub-connecting groove (411) gradually increases; and / or, Along the direction from the intermediate tread portion (30) to the shoulder tread portion (20), the width of the second sub-connecting groove (412) gradually decreases.

3. The tire according to claim 2, characterized in that, The recess (50) provided on the shoulder tread portion (20) is a first recess (51). The first recess (51) includes a first sub-recess (511) and a second sub-recess (512) that are connected to each other. The end of the first sub-recess (511) away from the second sub-recess (512) extends to one of the two sides of the shoulder tread portion (20). The end of the second sub-recess (512) away from the first sub-recess (511) is spaced apart from the other side of the two sides of the shoulder tread portion (20). Wherein, the first sub-recess (511) and the second sub-recess (512) are respectively located on both sides of the tire shoulder, and along the direction from the intermediate tread pattern (30) to the tire shoulder tread pattern (20), the width of the first sub-recess (511) gradually increases; and / or, Along the direction from the middle tread portion (30) to the shoulder tread portion (20), the width of the second sub-recess (512) gradually decreases.

4. The tire according to claim 2, characterized in that, The plurality of intermediate tread portions (30) include a central tread portion (31), the central tread portion (31) passing through the center surface S of the tire, the central tread portion (31) having two side surfaces disposed opposite to each other on both sides of the central tread portion (31) in the width direction; The connecting groove (40) located on the central patterned portion (31) is the second connecting groove (42). The second connecting groove (42) includes a third sub-connecting groove (421) and at least two fourth sub-connecting grooves (422). The at least two fourth sub-connecting grooves (422) are respectively connected to both ends of the third sub-connecting groove. The end of the at least two fourth sub-connecting grooves (422) away from the third sub-connecting groove (421) extends to the side of the central patterned portion (31). The width of the third sub-connecting trench (421) is smaller than the width of the fourth sub-connecting trench (422), and at least part of the third sub-connecting trench (421) is arc-shaped.

5. The tire according to claim 4, characterized in that, The recess (50) located on the central patterned portion (31) includes at least two second recesses (52), and the at least two second recesses (52) extend to the two sides of the central patterned portion (31) respectively. The depth D1 of the second recesses (52) satisfies: 0mm < D1 ≤ 5mm. Wherein, along the direction from the shoulder tread portion (20) to the center tread portion (31), the depth of the second recess (52) gradually decreases; and / or, Along the direction from the shoulder tread portion (20) to the center tread portion (31), the width of the second recess (52) gradually decreases.

6. The tire according to claim 4, characterized in that, The intermediate tread pattern (30) also includes a crown tread pattern (32), which is located between the central tread pattern (31) and the shoulder tread pattern (20). Among them, the connecting groove (40) located on the tread pattern (32) is the third connecting groove (43), and the third connecting groove (43) is correspondingly provided with the first connecting groove (41).

7. The tire according to claim 6, characterized in that, The tread pattern portion (32) has two sides disposed opposite to each other on both sides of the tread pattern portion (32) along the width direction. The recess (50) located on the tread pattern portion (32) includes a third recess (53) and a fourth recess (54). The third recess (53) and the fourth recess (54) extend to the two sides of the tread pattern portion (32) respectively. Wherein, the width of the third recess (53) is smaller than the width of the fourth recess (54), and the fourth recess (54) is correspondingly provided with the fourth sub-connecting groove (422); and / or, The depth D2 of the third recess (53) satisfies: 4.8mm ≤ D2 ≤ 5.2mm; and / or, The width W11 of the third recess (53) satisfies: 1.3mm≤W11≤1.7mm.

8. The tire according to claim 3, characterized in that, The tread pattern also includes multiple pitch tread units arranged circumferentially along the tire. The width W21 of the end of the first sub-recess (511) away from the second sub-recess (512), the width W22 of the end of the first sub-recess (511) that connects with the second sub-recess (512), the width W23 of the end of the second sub-recess (512) away from the first sub-recess (511), and the length P of the pitch pattern unit satisfy the following: 0.008P≤W21≤0.012P, 0.015P≤W22≤0.019P, 0.005P≤W23≤0.009P.

9. The tire according to claim 7, characterized in that, The tread pattern also includes multiple pitch tread units arranged circumferentially along the tire. The width W24 of the fourth recess (54) extending to one end of the side of the tread pattern portion (32) satisfies the following condition with respect to the length P of the pitch pattern unit: 0.013P≤W24≤0.017P; and / or, The width W31 of the third sub-connecting groove (421) and the length P of the pitch pattern unit satisfy the following relationship: 0.008P ≤ W31 ≤ 0.012P; and / or, The width W32 of the fourth sub-connecting groove (422) extending to one end of the side of the central patterned part (31) satisfies the following relationship with the length P of the pitch patterned unit: 0.013P≤W32≤0.017P.

10. The tire according to claim 6, characterized in that, The contact portion of the tire with the driving surface has a width T, and the tread structure also includes a plurality of pitch tread units arranged along the circumference of the tire. The plurality of pitch tread units include a first tread group (61), a second tread group (62), and a third tread group (63). Wherein, the width W40 of the central patterned portion (31) and the width T satisfy the following relationship: 0.076T≤W40≤0.08T; and / or, The width W41 of the crown tread portion (32) located in the first tread pattern group (61) and the width W42 of the shoulder tread portion (20) located in the first tread pattern group (61) satisfy the following: 0.46W42≤W41≤0.57W42. The width W41 of the crown tread portion (32) located in the first tread pattern group (61), the width W42 of the shoulder tread portion (20) located in the first tread pattern group (61) and the width T satisfy the following: 0.12T≤W41≤0.14T, 0.24T≤W42≤0.26T. The width W41 of the crown tread portion (32) located in the second tread pattern group (62) and the width W42 of the shoulder tread portion (20) located in the second tread pattern group (62) satisfy the following: 0.59W42≤W41≤0.72W42. The width W41 of the crown tread portion (32) located in the second tread pattern group (62), the width W42 of the shoulder tread portion (20) located in the second tread pattern group (62) and the width T satisfy the following: 0.14T≤W41≤0.16T, 0.22T≤W42≤0.24T. The width W41 of the crown tread portion (32) located in the third tread pattern group (63) and the width W42 of the shoulder tread portion (20) located in the third tread pattern group (63) satisfy the following: 0.74W42≤W41≤0.89W42. The width W41 of the crown tread portion (32) located in the third tread pattern group (63), the width W42 of the shoulder tread portion (20) located in the third tread pattern group (63) and the width T satisfy the following: 0.16T≤W41≤0.18T, 0.20T≤W42≤0.22T.

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