Tire

Abstract

The utility model provides a tire, the tread of the tire is provided with a plurality of circumferential pattern grooves, the plurality of circumferential pattern grooves are arranged at intervals along the circumferential direction of the tire, each circumferential pattern groove extends along the circumferential direction of the tire, and a pattern rib is formed between every two adjacent circumferential pattern grooves; the pattern ribs are provided with a plurality of first flow guide grooves, the first flow guide grooves are formed in the upper surfaces of the pattern ribs at intervals in the extending direction of the pattern ribs, and the two ends of each first flow guide groove extend to the two rib side walls of the pattern ribs correspondingly; the multiple second flow guide grooves are sequentially formed in the upper surfaces of the pattern ribs in the extending direction of the pattern ribs and correspond to the multiple first flow guide grooves in a one-to-one mode, all the second flow guide grooves communicate with the corresponding first flow guide grooves in a crossed mode, and at least parts of the second flow guide grooves extend in the extending direction of the pattern ribs; the problem that in the prior art, the water storage and drainage capacity of tread patterns of a tire cannot cope with the situation that a water accumulation layer on the road surface is thick is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a tire. Background Art

[0002] With the continuous expansion and improvement of the highway network, road transportation has become the main mode of passenger and freight transportation due to its advantages such as strong flexibility, high timeliness and the ability to achieve point-to-point direct access.

[0003] In road transportation, trucks and buses are the main transport vehicles. The force required for their driving is completely dependent on the contact area of ​​the tires. The adhesion performance of the tire contact area is the key factor in whether the car can drive safely. If there is insufficient adhesion, the tires will spin and slip on the road and will not be able to generate the traction, braking and steering forces required for the vehicle to drive. Especially when driving at high speed on slippery roads, if the accumulated water between the tread and the road surface cannot be discharged in time, the dynamic pressure resistance of the accumulated water may cause the wheels to float or even hydroplaning, causing the tires to lose adhesion to the road surface, thus causing danger.

[0004] The adhesion performance of tires on wet roads is mainly affected by factors such as road structure, water thickness, tread pattern and formulation. Generally, the road surface should be uneven in the macroscopic sense to achieve automatic drainage, and rough in the microscopic sense to puncture the water film, so that the road surface can be in direct contact with the tread rubber. On wet asphalt and cement roads, the drainage capacity is poorer than that of gravel roads. On such roads, and under certain rubber formulations, good adhesion can only be achieved when the tread pattern has sufficient water storage capacity and drainage capacity. Therefore, the study of the storage and drainage capacity of the tread pattern has become a key factor in improving the wet adhesion performance of tires.

[0005] In this regard, someone has proposed setting up a tire for enhancing wet grip, the tire including an incision formed in a block for discharging water flowing into the interior into a groove; a drain pipe, arranged in the incision, in the shape of a tube formed along the length direction of the incision, connected to the groove to discharge water into the groove; and a flow pipe, arranged in the incision, formed along the direction of the drain pipe from the entrance of the incision for water to flow in, in the shape of a tube, connected to the groove or the drain pipe, so as to effectively discharge water additionally absorbed through multiple flow pipes through the flow pipe and the drain pipe, so as to improve wet grip performance.

[0006] In addition, some people have proposed to set up a tire with improved wet performance, which includes a tread block arranged on the tread, having a top surface for contacting the road surface, the tread block having at least one side connected to the tread groove, and a groove extending toward the inside of the tread block is arranged on the top surface, the groove has a slender shape, and the bottom of the groove is connected to a guide channel. An angle is formed between the groove and the width direction of the tire, so that the guide channel has a first end located at the front side of the tire in the driving direction and a second end located at the rear side of the tire in the driving direction, the first end is located on the top surface, and the second end is located on the side. This design can improve the wet performance of the tire while ensuring that the area of ​​the tread block does not change too much.

[0007] However, although the above technical solution and similar prior art avoid improving the drainage capacity of the tire by only increasing the width or depth of the tread groove, thereby solving the problem that the tire durability, noise and wear performance may be negatively affected, the water storage and drainage capacity of the tread pattern still needs to be improved when the road surface water layer is thick. At the same time, the tires in the prior art have not solved the problem of the water in the longitudinal main groove flowing back into the transverse drainage channel in the pattern rib, and the sealing effect of the water in the microscopic rough pits on the road surface makes it impossible for the tread rubber to squeeze in, thereby reducing the effective contact between the tread rubber and the road surface. Utility Model Content

[0008] The main purpose of the utility model is to provide a tire to solve the problem that the water storage and drainage capabilities of the tread pattern of the tire in the prior art cannot cope with the situation where the road surface water layer is thicker.

[0009] In order to achieve the above-mentioned purpose, the utility model provides a tire, wherein a plurality of circumferential pattern grooves are arranged on the tread of the tire, the plurality of circumferential pattern grooves are arranged at intervals along the circumference of the tire, each of the circumferential pattern grooves extends along the circumference of the tire, and a pattern rib is formed between two adjacent circumferential pattern grooves; the pattern rib is provided with: a plurality of first guide grooves, the plurality of first guide grooves are arranged at intervals on the upper surface of the pattern rib along the extension direction of the pattern rib, and both ends of each first guide groove extend to two rib side walls of the pattern rib respectively; a plurality of second guide grooves, the plurality of second guide grooves are arranged in sequence on the upper surface of the pattern rib along the extension direction of the pattern rib and are arranged one-to-one with the plurality of first guide grooves, each of the second guide grooves is cross-connected with the corresponding first guide groove, and at least a portion of each second guide groove extends along the extension direction of the pattern rib.

[0010] Furthermore, the first guide groove is a mirror-symmetrical structure, and the symmetry plane of the first guide groove passes through the center line of the pattern rib and is perpendicular to the rotation axis of the tire; the first guide groove includes a first knife groove portion and a drainage groove portion connected in sequence along a direction close to the rotation axis of the tire, and the first knife groove portion is arranged to penetrate the pattern rib horizontally.

[0011] Furthermore, there are two drainage groove portions, which are arranged in mirror symmetry with respect to the symmetry plane of the first guide groove; the first guide groove also includes two capacity expansion channels, which are arranged one-to-one corresponding to the two drainage groove portions, and one end of each drainage groove portion close to the symmetry plane of the first guide groove is connected to the upper surface of the patterned rib through the capacity expansion channel, and one end of each drainage groove portion away from the symmetry plane of the first guide groove extends to the corresponding rib side wall of the patterned rib.

[0012] Further, the first knife groove portion includes a main knife groove section, and a reinforcement portion is provided at the bottom of the portion of the main knife groove section located between the two drainage groove portions; and / or the first knife groove portion includes the main knife groove section and a raised portion provided on the groove wall surface of the main knife groove section, the flow area of ​​the main knife groove section is smaller than the flow area of ​​the drainage groove portion, and the raised portion is spaced apart from the tread and the drainage groove portion of the tire; and / or the first knife groove portion includes the main knife groove section, and the two oppositely arranged groove wall surfaces of the main knife groove section are both processed with a first cutting surface on one side close to the tread of the tire; and / or the drainage groove portion includes a main drainage groove and a Tesla valve channel provided on the main drainage groove.

[0013] Further, the width of the reinforcement portion is T, the width of the pattern rib is S, wherein T / S=1 / 4 to 1 / 3; and / or the height of the reinforcement portion is K, the depth of the main knife groove segment is V, wherein K / V=0.3 to 0.5; and / or the angle between the two sidewall surfaces of the reinforcement portion located on opposite sides of the symmetry plane of the first guide groove is 30° to 40°, and the distance between the two sidewall surfaces of the reinforcement portion gradually decreases in the direction away from the rotation axis of the tire; and / or the height of the raised portion is d, the width of the main knife groove segment is U, wherein d / U=1 / 4 to 1 / 3; and / or the width of the raised portion is b, the depth of the main knife groove segment is V, wherein b / V=1 / 4 to 1 / 3; and / or the raised portion is close to the rotation axis of the tire. A first transition fillet is processed between one side and the groove wall surface of the main groove section; and / or a second transition fillet is processed between the side of the raised portion away from the rotation axis of the tire and the groove wall surface of the main groove section; and / or the raised portion is located on the front side of the main groove section close to the rolling direction of the tire; and / or the distance between the two oppositely arranged first cutting surfaces is 2mm to 2.8mm; and / or the depth of the first cutting surface in a direction perpendicular to the tread of the tire is 0.8mm to 2mm; and / or a plurality of first serrated edges are arranged at intervals on the first cutting surface; and / or the flow cross-section of the main drainage groove and the flow cross-section of the capacity expansion channel are squares with rounded corners on all four corners, and the side length of the square is equal to the width of the first guide groove on one side close to the tread of the tire.

[0014] Further, the height of the first sawtooth edge ranges from 0.5 mm to 0.8 mm; and / or the angle between the extension direction of the first sawtooth edge and the symmetry plane of the first guide groove is 5° to 10°.

[0015] Further, the extension line of the first knife groove portion on the tread of the tire is an arc segment protruding toward the front side in the rolling direction of the tire, the arc height of the arc segment is H, and the width of the pattern rib is S, wherein H / S=0.15 to 0.3; and / or the angle between the extension line of the first knife groove portion in the direction close to the rotation axis of the tire and the radial direction of the tire is θ, wherein θ=10° to 20°; and / or the width of the first guide groove is 0.8mm to 1.5mm; and / or the depth of the first guide groove is 0.3 to 0.5 times the depth of the circumferential pattern groove; and / or the angle between the extension direction of the capacity expansion channel and the symmetry plane of the first guide groove is an acute angle.

[0016] Furthermore, the second guide groove includes: a second knife groove portion, which is a mirror-symmetrical structure extending along the extension direction of the pattern rib, the symmetry plane of the second knife groove portion passes through the center line of the pattern rib and is perpendicular to the rotation axis of the tire, and the second knife groove portion is cross-connected with the corresponding first guide groove; two third knife groove portions, the two third knife groove portions are arranged at one end of the second knife groove portion and are mirror-symmetrical about the symmetry plane of the second knife groove portion, the first end of each third knife groove portion is connected to the second knife groove portion, the second end of each third knife groove portion extends in a direction away from the second knife groove portion, the angle between the extension direction of each third knife groove portion and the extension direction of the second knife groove portion is an obtuse angle, and each third knife groove portion is spaced apart from the corresponding rib side wall of the pattern rib.

[0017] Furthermore, the distance between the second ends of the two third sipes is X, and the width of the rib is S, wherein X / S=1 / 4 to 1 / 3; and / or the width of the second sipe is 0.6 mm to 1.2 mm; and / or the depth of the second sipe gradually decreases from the middle to both ends; and / or the two oppositely disposed groove wall surfaces of the second guide groove are both machined with a second cutting surface on one side close to the tread of the tire.

[0018] Furthermore, a plurality of second serrated edges are spaced apart on the second cutting surface; and / or a distance between two oppositely arranged second cutting surfaces is 1.5 mm to 2 mm; and / or a depth of the second cutting surface in a direction perpendicular to the tread of the tire is 0.5 mm to 2 mm.

[0019] By applying the technical solution of the utility model, a plurality of circumferential pattern grooves are arranged on the tread of the tire of the utility model, the plurality of circumferential pattern grooves are arranged at intervals along the circumference of the tire, each of the circumferential pattern grooves extends along the circumference of the tire, and a pattern rib is formed between two adjacent circumferential pattern grooves; the pattern rib is provided with: a plurality of first guide grooves, the plurality of first guide grooves are arranged at intervals on the upper surface of the pattern rib along the extension direction of the pattern rib, and both ends of each first guide groove extend to two rib side walls of the pattern rib respectively; a plurality of second guide grooves, the plurality of second guide grooves are arranged in sequence on the upper surface of the pattern rib along the extension direction of the pattern rib and are arranged one-to-one with the plurality of first guide grooves, each of the second guide grooves is cross-connected with the corresponding first guide groove, and at least a portion of each second guide groove extends along the extension direction of the pattern rib. In this way, the tire of the utility model improves the water storage capacity and drainage speed of the tire tread pattern by arranging a combination structure of multiple first guide grooves and multiple second guide grooves on the pattern ribs in the circumferential pattern grooves, without affecting other performances of the tire, thereby solving the problem that the water storage and drainage capabilities of the tire tread pattern in the prior art cannot cope with the situation where the road surface has a thicker water layer. At the same time, it breaks the surface tension of the water film that produces a sealing effect in the microscopic rough potholes in the road surface, increases the effective contact between the tire tread and the road surface, and thus achieves the purpose of enhancing the wet adhesion performance of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 A three-dimensional schematic diagram showing the movement of water when a tire rolls on a wet road;

[0022] Figure 2 A schematic diagram showing the axial dissipation of water when a tire rolls on a wet road;

[0023] Figure 3 A schematic diagram showing the sealing effect of the water film between the tire and the microscopic rough potholes on the road surface;

[0024] Figure 4 A schematic plan view of an embodiment of a tire according to the utility model is shown;

[0025] Figure 5 Out Figure 4 A perspective schematic diagram of a tire shown;

[0026] Figure 6 Shows Figure 4 A cross-sectional view of the tire shown along the BB' direction;

[0027] Figure 7 Shows Figure 4 A cross-sectional view of the tire shown along the CC' direction;

[0028] Figure 8 Shows Figure 4 A cross-sectional view of the tire shown along the D-D' direction;

[0029] Fig. 9 Shows Figure 4 A cross-sectional view of the tire shown along the EE' direction;

[0030] Fig.10 Shows Figure 4 The deformation diagram of the first guide groove of the tire when being squeezed is shown;

[0031] Fig.11 Shows Figure 4 The diagram of drainage of the first guide groove of the tire during rolling is shown;

[0032] Fig.12 Shows Figure 4 The schematic diagram of the positive flow assistance of the Tesla valve channel in the drainage groove of the tire shown in the figure when rectifying the drainage;

[0033] Fig.13 Shows Figure 4 The schematic diagram of the backflow restriction of the Tesla valve channel in the drainage groove of the tire shown in the figure when rectifying the drainage;

[0034] Fig.14 Shows Figure 4 The diagram shows the function of the first serration or the second serration on the tire located in the direct contact area between the tread of the tire and the road surface.

[0035] The above drawings include the following reference numerals:

[0036] 100. Tires;

[0037] 1. Circumferential groove;

[0038] 2. Patterned ribs;

[0039] 3. First guide groove; 31. First grooving portion; 311. Main grooving section; 312. Reinforced portion; 313. Protruding portion; 314. First cutting surface; 315. First sawtooth edge; 32. Drainage groove portion; 321. Main drainage groove; 322. Tesla valve channel; 33. Capacity expansion channel;

[0040] 4. Second guide groove; 41. Second knife groove portion; 42. Third knife groove portion; 43. Second cutting surface; 44. Second serrated edge. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] At present, the analysis of the water flow characteristics of the tire rolling in the water layer on the slippery road and the ground contact characteristics of the tread and the road surface is as follows:

[0043] like Figure 1 and Figure 2 As shown, when the tire rolls on a wet road, the contact area between the tread and the road surface can be divided into three zones, namely, a wedge-shaped water accumulation zone, a ground contact transition zone and a direct contact zone, wherein the length of the contact area is L, and the total length of the wedge-shaped water accumulation zone and the ground contact transition zone is D.

[0044] When the tire begins to come into contact with water, a wedge-shaped water accumulation area will be formed at the leading edge of the tire. Due to the dynamic water pressure generated by the wedge-shaped water accumulation, the tread in the wedge-shaped water accumulation area will detach from the road surface. With the rolling and squeezing action of the tread, the formed wedge-shaped water accumulation area will move along the rolling direction of the tire and continuously invade the ground contact transition area (i.e., incomplete ground contact area) of the tread. The water begins to flow into the tread grooves on the tread. Due to the influence of water accumulation in the wedge-shaped water accumulation area, the drainage speed is relatively low. A small part of the water flows to the ground contact rear end through the tread grooves. The tread grooves cannot effectively drain the water. At the same time, due to the squeezing obstruction of the tread, most of the water overflows to both sides of the tread and flows to the rear end along the sidewalls. Although a large amount of water overflows in the ground contact transition area, there is still a layer of water film with bonding and lubrication effect. As a result, part of the tread floats up and cannot completely contact the road surface.

[0045] As the accumulated water enters the groove, since the rear end of the groove in the contact area is connected to the outside atmosphere, a significant pressure difference will be formed at both ends of the groove to force the drainage speed to increase, forming a direct contact area between the tread and the road at the rear end of the entire contact area, providing the main adhesion capacity for the tire. Its length is LD. The larger this value is, the better the wet adhesion performance of the tire. At the same time, in the direct contact area, there is still a water film in the microscopic rough pits on the road surface. The sealing effect generated by its surface tension prevents the tread rubber from squeezing into the pits, which to a certain extent reduces the effective contact between the tread and the road surface. Figure 3 shown.

[0046] Without changing the tire's ground contact profile, adding transverse grooves that connect different circumferential grooves to the tread ribs can increase the space for accumulated water to flow, increase the amount of water flowing through, reduce the dynamic water pressure on the tread, and improve the tire's drainage performance. However, at the same time, the accumulated water in the circumferential grooves will be diverted to the transverse grooves or even flow back due to the squeezing effect, and then overflow to the tread rubber surface, increasing the number and volume of water films in the microscopic rough pits on the road surface in the direct contact area, aggravating its sealing effect, and having an adverse effect on improving the tire's wet adhesion performance.

[0047] Based on the above analysis of the water flow characteristics and tread-road contact characteristics of the tire during the rolling process of the water layer on the wet road, it is necessary to redesign a tire in order to improve the water storage capacity and drainage speed of the pattern on the tread without affecting other properties of the tire such as durability, noise and wear, reduce the phenomenon of water accumulation in the circumferential pattern groove flowing back into the lateral drainage channel in the pattern rib, and at the same time break the surface tension of the water film of the sealing effect in the micro-rough potholes of the road surface, increase the effective contact between the tread and the road surface, and thereby enhance the wet adhesion performance of the tire.

[0048] like Figures 4 to 14 As shown, the utility model provides a tire 100, on the tread of the tire 100, a plurality of circumferential grooves 1 are arranged, the plurality of circumferential grooves 1 are arranged at intervals along the circumference of the tire 100, each of the circumferential grooves 1 extends along the circumference of the tire 100, and a pattern rib 2 is formed between two adjacent circumferential grooves 1; the pattern rib 2 is provided with: a plurality of first guide grooves 3, the plurality of first guide grooves 3 are arranged at intervals on the upper surface of the pattern rib 2 along the extension direction of the pattern rib 2, and both ends of each first guide groove 3 extend to two rib side walls of the pattern rib 2 respectively; a plurality of second guide grooves 4, the plurality of second guide grooves 4 are arranged in sequence on the upper surface of the pattern rib 2 along the extension direction of the pattern rib 2 and are arranged one-to-one with the plurality of first guide grooves 3, each of the second guide grooves 4 is cross-connected with the corresponding first guide groove 3, and at least a portion of each second guide groove 4 extends along the extension direction of the pattern rib 2.

[0049] In this way, the tire of the utility model improves the water storage capacity and drainage speed of the tire tread pattern by arranging a combination structure of multiple first guide grooves 3 and multiple second guide grooves 4 on the pattern ribs 2 in the circumferential pattern grooves 1, without affecting other performances of the tire, thereby solving the problem that the water storage and drainage capabilities of the tire tread pattern in the prior art cannot cope with the situation where the road surface has a thicker water layer. At the same time, it breaks the surface tension of the water film that produces a sealing effect in the microscopic rough pits in the road surface, increases the effective contact between the tire tread and the road surface, and thus achieves the purpose of enhancing the wet adhesion performance of the tire.

[0050] like Figure 4 , Figure 5 and Figure 8 As shown, the first guide groove 3 is a mirror-symmetrical structure, and the symmetry plane of the first guide groove 3 passes through the center line of the patterned rib 2 and is perpendicular to the rotation axis of the tire; the first guide groove 3 includes a first knife groove portion 31 and a drainage groove portion 32 which are connected in sequence along a direction close to the rotation axis of the tire, and the first knife groove portion 31 is arranged to penetrate the patterned rib 2 horizontally.

[0051] like Figure 5 and Figure 8 As shown, there are two drainage groove portions 32, and the two drainage groove portions 32 are arranged in a mirror-symmetrical manner with respect to the symmetry plane of the first guide groove 3; the first guide groove 3 also includes two capacity expansion channels 33, and the two capacity expansion channels 33 are arranged one-to-one corresponding to the two drainage groove portions 32, and one end of each drainage groove portion 32 close to the symmetry plane of the first guide groove 3 is connected to the upper surface of the patterned rib 2 through the capacity expansion channel 33, and one end of each drainage groove portion 32 away from the symmetry plane of the first guide groove 3 extends to the corresponding rib side wall of the patterned rib 2, thereby increasing the storage and discharge capacity of accumulated water.

[0052] In this way, the tire of the utility model increases the water storage and drainage volume by making the extension line of the first slit portion 31 of the first guide groove 3 on the tread of the tire an arc segment convex to the front side in the rolling direction of the tire, and providing a drainage groove portion 32. The accumulated water that is not completely discharged into the circumferential groove 1 is sealed in the drainage groove portion 32. The extension direction of the drainage groove portion 32 is parallel to the arc segment, so that the accumulated water is more easily thrown to the rear of the ground contact transition zone with the inertia of the tire rolling.

[0053] At the same time, the first guide groove 3 of the tire of the utility model increases the storage and discharge capacity of part of the accumulated water in the wedge-shaped water accumulation area and the ground contact transition area by providing the capacity-increasing channel 33 .

[0054] like Figures 5 to 8 As shown, the first knife groove portion 31 includes a main knife groove section 311, and a reinforcement portion 312 is provided at the bottom of the portion of the main knife groove section 311 located between the two drainage groove portions 32; and / or the first knife groove portion 31 includes the main knife groove section 311 and a protrusion 313 provided on the groove wall surface of the main knife groove section 311, the flow area of ​​the main knife groove section 311 is smaller than the flow area of ​​the drainage groove portion 32, and the protrusion 313 is spaced apart from the tread of the tire and the drainage groove portion 32; and / or the first knife groove portion 31 includes the main knife groove section 311, and the first cutting surface 314 is processed on one side of the two oppositely arranged groove walls of the main knife groove section 311 close to the tread of the tire; and / or the drainage groove portion 32 includes a main drainage groove 321 and a Tesla valve channel 322 provided on the main drainage groove 321.

[0055] like Fig.10 and Fig.11As shown, the first guide groove 3 of the tire of the utility model is provided with a protrusion 313 on the main groove section 311 to form a venturi-like structure. The Bernoulli principle is used to accelerate the flow rate of accumulated water in the main groove section 311, and further improve the speed of accumulated water entering the drainage groove section 32, so that the ground contact transition zone moves forward, and the length LD of the direct contact zone between the tread and the road surface is increased. At the same time, when the tire rolls, the pattern ribs are radially squeezed and deformed in the direct contact zone, and the protrusion 313 may even squeeze and contact with the groove wall surface of the main groove section 311, thereby limiting the backflow of water that has entered the drainage groove section 32, preventing the increase in the number and volume of water films in the microscopic rough pits on the road surface, and improving the wet adhesion performance of the tire.

[0056] like Fig.12 and Fig.13 As shown, the first guide groove 3 of the tire of the utility model can assist the acceleration of the positive flow of accumulated water from the pattern rib 2 to the circumferential pattern groove 1 by setting a drainage groove portion 32 including a Tesla valve channel 322 with a rectifying characteristic. At the same time, when the accumulated water in the circumferential pattern groove 1 flows back to the drainage groove portion 32 in the pattern rib 2, it will be diverted by the Tesla valve channel 322, and the water flow speed will be slowed down in the confluence area due to the generation of vortices.

[0057] Preferably, there are multiple Tesla valve channels 322, which are spaced apart on the main drainage groove 321. Through the superposition of the multiple Tesla valve channels 322, the backflow of accumulated water into the patterned rib 2 and the direct contact area between the tread and the road surface is delayed or even restricted.

[0058] like Figure 8 As shown, the tire of the utility model is provided with a reinforcement portion 312 at the bottom of the main groove section 311 to separate the two drainage groove portions 32, and the two drainage groove portions 32 are symmetrically connected to the two rib side walls of the pattern rib 2, so that the pattern rib 2 can still maintain a certain rigidity without adversely affecting other properties of the tire. The diversion channel increases the water storage and drainage volume, and the accumulated water that is not completely discharged into the circumferential groove 1 is enclosed in the drainage groove portion 32. The arc-shaped channel of the circumferential groove 1 makes it easier for the accumulated water to be thrown to the rear of the ground contact transition zone with the inertia of the tire rolling.

[0059] like Figures 4 to 8As shown, the width of the reinforcement portion 312 is T, the width of the patterned rib 2 is S, wherein T / S=1 / 4 to 1 / 3; and / or the height of the reinforcement portion 312 is K, the depth of the main knife groove segment 311 is V, wherein K / V=0.3 to 0.5; and / or the angle between the two sidewall surfaces of the reinforcement portion 312 located on opposite sides of the symmetry plane of the first guide groove 3 is 30° to 40°, and the distance between the two sidewall surfaces of the reinforcement portion 312 gradually decreases in the direction away from the rotation axis of the tire; and / or the height of the protrusion 313 is d, the width of the main knife groove segment 311 is U, wherein d / U=1 / 4 to 1 / 3; and / or the width of the protrusion 313 is b, the depth of the main knife groove segment 311 is V, wherein b / V=1 / 4 to 1 / 3; and / or the side of the protrusion 313 close to the rotation axis of the tire A first transition fillet is processed between the groove wall surface of the main knife groove section 311; and / or a second transition fillet is processed between the side of the protrusion 313 away from the rotation axis of the tire and the groove wall surface of the main knife groove section 311; and / or the protrusion 313 is located on the front side of the main knife groove section 311 close to the rolling direction of the tire; and / or the distance between the two oppositely arranged first cutting surfaces 314 is 2mm to 2.8mm; and / or the depth of the first cutting surface 314 in the direction perpendicular to the tread of the tire is 0.8mm to 2mm; and / or a plurality of first serrated edges 315 are arranged at intervals on the first cutting surface 314; and / or the flow cross-section of the main drainage groove 321 and the flow cross-section of the capacity expansion channel 33 are squares with rounded corners at all four corners, and the side length of the square is equal to the width of the side of the first guide groove 3 close to the tread of the tire.

[0060] Specifically, the height of the first sawtooth edge 315 ranges from 0.5 mm to 0.8 mm; and / or the angle between the extension direction of the first sawtooth edge 315 and the symmetry plane of the first guide groove 3 is 5° to 10°.

[0061] In this way, the first cutting surface 314 can prevent the main cutting groove section 311 from curling and deforming, and cooperate with the first sawtooth edge 315 to speed up the cutting of the water film, increase the contact area with the accumulated water, and improve the water shoveling amount and speed.

[0062] like Figures 4 to 8As shown, the extension line of the first sipe portion 31 on the tread of the tire is an arc segment protruding toward the front side of the rolling direction of the tire, the arc height of the arc segment is H, the width of the pattern rib 2 is S, wherein H / S=0.15 to 0.3; and / or the first sipe portion 31 extends backward from the forward direction of the tire in the circumferential direction, and the first sipe portion 31 is inclined toward the rolling outward side of the tire, and the angle between the extension line of the first sipe portion 31 in the direction close to the rotation axis of the tire and the radial direction of the tire is θ, wherein θ=10° to 2 0°, so that the first sipe portion 31 can more easily cut the water film, can continuously shovel water from the water layer during the rolling of the tire, and can accelerate the collection and discharge of part of the water in the above-mentioned wedge-shaped water accumulation area and the ground contact transition area into the drainage groove portion 32; and / or the width of the first guide groove 3 is 0.8mm to 1.5mm; and / or the depth of the first guide groove 3 is 0.3 to 0.5 times the depth of the circumferential groove 1; and / or the angle between the extension direction of the capacity expansion channel 33 and the symmetry plane of the first guide groove 3 is an acute angle.

[0063] Specifically, the drainage groove portion 32 is connected to the capacity increasing channel 33 at a certain arc, and the flow cross section of the drainage groove portion 32 (except the Tesla valve channel 322 ) is the same in size and shape as the flow cross section of the capacity increasing channel 33 .

[0064] like Figure 4 and Fig. 9 As shown, the second guide groove 4 includes: a second knife groove portion 41, which is a mirror-symmetrical structure extending along the extension direction of the pattern rib 2, the symmetry plane of the second knife groove portion 41 passes through the center line of the pattern rib 2 and is perpendicular to the rotation axis of the tire, and the second knife groove portion 41 is cross-connected with the corresponding first guide groove 3; two third knife groove portions 42, the two third knife groove portions 42 are arranged at one end of the second knife groove portion 41 and are mirror-symmetrical about the symmetry plane of the second knife groove portion 41, the first end of each third knife groove portion 42 is connected to the second knife groove portion 41, the second end of each third knife groove portion 42 extends in a direction away from the second knife groove portion 41, the angle between the extension direction of each third knife groove portion 42 and the extension direction of the second knife groove portion 41 is an obtuse angle, and each third knife groove portion 42 is spaced apart from the corresponding rib side wall of the pattern rib 2.

[0065] like Figure 4 As shown, the distance between the second ends of the two third sipes 42 is X, the width of the patterned rib 2 is S, wherein X / S=1 / 4 to 1 / 3; and / or the width of the second sipe 41 is 0.6 mm to 1.2 mm; and / or the depth of the second sipe 41 gradually decreases from the middle to both ends; and / or the two oppositely disposed groove walls of the second guide groove 4 are both machined with a second cutting surface 43 on one side close to the tread of the tire.

[0066] Specifically, the depth of the shallowest part of the second sipe portion 41 ranges from 2 mm to 3 mm, and the depth of the deepest part of the second sipe portion 41 ranges from half of the difference between the depth V of the main sipe section 311 and the height K of the reinforcement portion 312 .

[0067] In this way, the second knife groove portion 41 and the two third knife groove portions 42 together form a "Y"-shaped second guide groove 4, which can pre-cut the water layer in front of the rolling tire and drain part of the accumulated water into the lateral drainage channel, so that the edge portions of the two side walls of the second guide groove 4 can contact the ground in advance, reducing the dynamic water pressure and lifting force of the water layer on the tread, and helping to improve the drainage speed of the tire.

[0068] like Figure 4 and Fig. 9 As shown, a plurality of second serrated edges 44 are spaced apart on the second cutting surface 43; and / or the distance between two oppositely arranged second cutting surfaces 43 is 1.5 mm to 2 mm; and / or the depth of the second cutting surface 43 in a direction perpendicular to the tread of the tire is 0.5 mm to 2 mm.

[0069] Specifically, the height of the second sawtooth edge 44 ranges from 0.5 mm to 0.8 mm; and the angle between the extension direction of the second sawtooth edge 44 and the symmetry plane of the second grooving portion 41 ranges from 5° to 10°.

[0070] like Fig.14 As shown, the tire of the utility model is provided with a second serrated edge 44 on the second cutting surface 43, and the sharper edges of the second serrated edge 44 are used to more easily cut through the water film, thereby increasing the contact area between the tread of the tire and the accumulated water when cutting through the accumulated water, so that the accumulated water can enter the drainage channel more quickly; at the same time, the second serrated edge 44 can squeeze into the microscopic rough grooves of the road surface in the direct contact area between the tread and the road surface, breaking the surface tension of the water film caused by the sealing effect, increasing the effective contact between the tread and the road surface, and thus enhancing the wet adhesion performance of the tire.

[0071] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0072] A plurality of circumferential grooves 1 are arranged on the tread of the tire of the utility model, and the plurality of circumferential grooves 1 are arranged at intervals along the circumference of the tire, and each of the circumferential grooves 1 extends along the circumference of the tire, and a pattern rib 2 is formed between two adjacent circumferential grooves 1; the pattern rib 2 is provided with: a plurality of first guide grooves 3, and the plurality of first guide grooves 3 are arranged at intervals on the upper surface of the pattern rib 2 along the extension direction of the pattern rib 2, and both ends of each first guide groove 3 extend to the two rib side walls of the pattern rib 2 respectively; a plurality of second guide grooves 4, and the plurality of second guide grooves 4 are arranged in sequence on the upper surface of the pattern rib 2 along the extension direction of the pattern rib 2 and are arranged one-to-one with the plurality of first guide grooves 3, and each of the second guide grooves 4 is cross-connected with the corresponding first guide groove 3, and at least a portion of each of the second guide grooves 4 extends along the extension direction of the pattern rib 2. In this way, the tire of the utility model improves the water storage capacity and drainage speed of the tire tread pattern by arranging a combination structure of multiple first guide grooves 3 and multiple second guide grooves 4 on the pattern ribs 2 in the circumferential pattern grooves 1, without affecting other performances of the tire, thereby solving the problem that the water storage and drainage capabilities of the tire tread pattern in the prior art cannot cope with the situation where the road surface has a thicker water layer. At the same time, it breaks the surface tension of the water film that produces a sealing effect in the microscopic rough pits in the road surface, increases the effective contact between the tire tread and the road surface, and thus achieves the purpose of enhancing the wet adhesion performance of the tire.

[0073] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0074] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0075] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0076] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0077] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0078] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tire, characterized in that: The tire tread is provided with a plurality of circumferential grooves (1), the plurality of circumferential grooves (1) are arranged at intervals along the circumference of the tire, each of the circumferential grooves (1) extends along the circumference of the tire, and a pattern rib (2) is formed between two adjacent circumferential grooves (1); the pattern rib (2) is provided with: a plurality of first guide grooves (3), the plurality of first guide grooves (3) being arranged at intervals on the upper surface of the patterned rib (2) along the extension direction of the patterned rib (2), and both ends of each of the first guide grooves (3) respectively extending to two rib side walls of the patterned rib (2); A plurality of second guide grooves (4), wherein the plurality of second guide grooves (4) are sequentially arranged on the upper surface of the patterned rib (2) along the extension direction of the patterned rib (2) and are arranged one-to-one with the plurality of first guide grooves (3), each of the second guide grooves (4) is cross-connected with the corresponding first guide groove (3), and at least a portion of each of the second guide grooves (4) extends along the extension direction of the patterned rib (2).

2. The tire according to claim 1, characterized in that The first guide groove (3) is a mirror-symmetrical structure, and the symmetry plane of the first guide groove (3) passes through the center line of the pattern rib (2) and is perpendicular to the rotation axis of the tire; the first guide groove (3) comprises a first sipe portion (31) and a drainage groove portion (32) which are sequentially connected in a direction close to the rotation axis of the tire, and the first sipe portion (31) is arranged to penetrate the pattern rib (2) transversely.

3. The tire according to claim 2, characterized in that The number of the drainage groove portions (32) is two, and the two drainage groove portions (32) are arranged in a mirror-symmetrical manner with respect to the symmetry plane of the first guide groove (3); the first guide groove (3) also includes two capacity-increasing channels (33), and the two capacity-increasing channels (33) are arranged in a one-to-one correspondence with the two drainage groove portions (32), and one end of each drainage groove portion (32) close to the symmetry plane of the first guide groove (3) is connected to the upper surface of the patterned rib (2) through the capacity-increasing channel (33), and one end of each drainage groove portion (32) away from the symmetry plane of the first guide groove (3) extends to the corresponding rib side wall of the patterned rib (2).

4. The tire according to claim 3, characterized in that The first sipe portion (31) comprises a main sipe section (311), and a reinforcement portion (312) is provided at the bottom of a portion of the main sipe section (311) located between the two drainage groove portions (32); and / or The first sipe portion (31) comprises a main sipe segment (311) and a raised portion (313) arranged on the groove wall surface of the main sipe segment (311), the flow area of ​​the main sipe segment (311) is smaller than the flow area of ​​the drainage groove portion (32), and the raised portion (313) is spaced from the tread of the tire and the drainage groove portion (32); and / or The first sipe portion (31) comprises a main sipe segment (311), and two oppositely disposed sipe walls of the main sipe segment (311) are both processed with a first cutting surface (314) on one side close to the tread of the tire; and / or The drainage groove portion (32) includes a main drainage groove (321) and a Tesla valve channel (322) arranged on the main drainage groove (321).

5. The tire according to claim 4, characterized in that The width of the reinforcement portion (312) is T, and the width of the patterned rib (2) is S, wherein T / S=1 / 4 to 1 / 3; and / or The height of the reinforcement portion (312) is K, and the depth of the main grooving section (311) is V, wherein K / V=0.3 to 0.5; and / or The angle between the two sidewall surfaces of the reinforcement portion (312) located on opposite sides of the symmetry plane of the first guide groove (3) is 30° to 40°, and the distance between the two sidewall surfaces of the reinforcement portion (312) gradually decreases in a direction away from the rotation axis of the tire; and / or The height of the protrusion (313) is d, and the width of the main grooving section (311) is U, wherein d / U=1 / 4 to 1 / 3; and / or The width of the protrusion (313) is b, and the depth of the main grooving section (311) is V, wherein b / V=1 / 4 to 1 / 3; and / or A first transition fillet is processed between a side of the protrusion (313) close to the rotation axis of the tire and a groove wall surface of the main groove section (311); and / or A second transition fillet is machined between the side of the protrusion (313) away from the rotation axis of the tire and the groove wall surface of the main groove section (311); and / or The protrusion (313) is located on a side of the main sipe segment (311) close to the front side in the rolling direction of the tire; and / or The distance between the two first cutting surfaces (314) arranged opposite to each other is 2 mm to 2.8 mm; and / or The depth of the first cutting surface (314) in a direction perpendicular to the tread of the tire is 0.8 mm to 2 mm; and / or A plurality of first sawtooth edges (315) are arranged at intervals on the first cutting surface (314); and / or The flow cross-section of the main drainage groove (321) and the flow cross-section of the capacity-increasing channel (33) are squares with four rounded corners, and the side length of the square is equal to the width of the first guide groove (3) on the side close to the tread of the tire.

6. The tire according to claim 5, characterized in that The height of the first sawtooth edge (315) ranges from 0.5 mm to 0.8 mm; and / or The included angle between the extension direction of the first sawtooth edge (315) and the symmetry plane of the first guide groove (3) is 5° to 10°.

7. The tire according to claim 3, characterized in that The extension line of the first sipe portion (31) on the tread of the tire is an arc segment convex toward the front side in the rolling direction of the tire, the arc height of the arc segment is H, the width of the pattern rib (2) is S, wherein H / S=0.15 to 0.3; and / or The angle between the extension line of the first sipe portion (31) in the direction close to the rotation axis of the tire and the radial direction of the tire is θ, wherein θ=10° to 20°; and / or The width of the first guide groove (3) is 0.8 mm to 1.5 mm; and / or The depth of the first guide groove (3) is 0.3 to 0.5 times the depth of the circumferential groove (1); and / or The angle between the extension direction of the capacity increasing channel (33) and the symmetry plane of the first guide groove (3) is an acute angle.

8. The tire according to claim 1, characterized in that The second guide groove (4) comprises: A second sipe portion (41), the second sipe portion (41) being a mirror-symmetrical structure extending along the extension direction of the pattern rib (2), the symmetry plane of the second sipe portion (41) passing through the center line of the pattern rib (2) and being perpendicular to the rotation axis of the tire, the second sipe portion (41) being cross-connected with the corresponding first guide groove (3); Two third knife groove portions (42), the two third knife groove portions (42) are arranged at one end of the second knife groove portion (41) and are mirror-symmetrical about the symmetry plane of the second knife groove portion (41), the first end of each of the third knife groove portions (42) is connected to the second knife groove portion (41), the second end of each of the third knife groove portions (42) extends in a direction away from the second knife groove portion (41), the angle between the extension direction of each of the third knife groove portions (42) and the extension direction of the second knife groove portion (41) is an obtuse angle, and each of the third knife groove portions (42) is spaced apart from the corresponding rib side wall of the patterned rib (2).

9. The tire according to claim 8, characterized in that The distance between the second ends of the two third sipes (42) is X, the width of the patterned rib (2) is S, wherein X / S=1 / 4 to 1 / 3; and / or The width of the second sipe portion (41) is 0.6 mm to 1.2 mm; and / or The depth of the second sipe portion (41) gradually decreases from the middle to both ends; and / or The second guide groove (4) has two groove wall surfaces disposed opposite to each other, and the side close to the tread of the tire is processed with a second cutting surface (43).

10. The tire according to claim 9, characterized in that A plurality of second sawtooth edges (44) are arranged at intervals on the second cutting surface (43); and / or The distance between the two second cutting surfaces (43) arranged opposite to each other is 1.5 mm to 2 mm; and / or The second cutting surface (43) has a depth of 0.5 mm to 2 mm in a direction perpendicular to the tread of the tire.

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