Tread structure and tire capable of improving grip performance

Abstract

The utility model provides a tread structure and a tire capable of improving grip performance, the tread structure comprises a middle pattern structure, the middle pattern structure comprises a first pattern block and second pattern blocks, the first pattern block is arranged in the middle of the tread structure, and the two groups of second pattern blocks are transversely arranged on the two sides of the first pattern block at intervals; the first pattern blocks obliquely extend between the second pattern blocks, each first pattern block comprises a first end part which protrudes forwards in the circumferential direction, the transverse width of the first end part is gradually increased in the circumferential direction, each second pattern block comprises a second end part which protrudes forwards in the circumferential direction, the first end part is opposite to the second end part, and the transverse width of the second end part is gradually increased in the circumferential direction. The transverse width of the second end portion is gradually increased in the circumferential direction, the second end portion comprises a third wall and a fourth wall which intersect at the tip end, the third wall obliquely extends towards the outer side from the tip end, and the fourth wall obliquely extends towards the first end portion from the tip end. The tread structure is beneficial for improving the gripping performance of the tire on a non-paved road surface. The utility model relates to the field of tires.

Description

Technical Field

[0001] The present application relates to the field of tires, and in particular to a tread structure and a tire with improved grip performance. Background Art

[0002] In order to meet the passing performance of SUV vehicles on various complex road conditions, it is necessary to design and develop all-terrain tires with improved grip performance that match them. Different from ordinary tires with improved grip performance, all-terrain tires with improved grip performance have higher requirements for grip, puncture resistance, wear resistance and safety on complex road surfaces such as mountain roads, muddy roads, sandy roads, etc., and should have good handling performance on all-terrain roads and sandy mud mountains.

[0003] The grip performance of some all-terrain tires with improved grip performance in the prior art on unpaved roads needs to be improved, and there is a problem that it is difficult to reliably embed in the road surface, and the passing performance is poor under the conditions of complex road surfaces such as mountain roads, muddy roads, sandy roads, etc. Summary of the Utility Model

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present application provides a tread structure and a tire with improved grip performance, and the tread structure helps to improve the grip performance of the tire on unpaved roads.

[0005] According to the tread structure provided by the present application, it includes an intermediate tread pattern structure. The intermediate tread pattern structure includes a first tread block and a second tread block. The first tread block is disposed in the middle of the tread structure. Two groups of the second tread blocks are transversely spaced on both sides of the first tread block. The first tread block extends obliquely between the second tread blocks. Wherein, the first tread block includes a first end portion that protrudes forward in the circumferential direction, and the transverse width of the first end portion gradually increases in the circumferential direction. The second tread block includes a second end portion that protrudes forward in the circumferential direction. The first end portion and the second end portion are opposite to each other. The transverse width of the second end portion gradually increases in the circumferential direction. The second end portion includes a third wall and a fourth wall that meet at a tip. The third wall extends obliquely outward from the tip, and the fourth wall extends obliquely from the tip to the first end portion.

[0006] According to the tread structure provided by the present application, it has at least the following technical effects: First, by setting a gradually increasing second end portion, the tip of the second end portion is suitable for breaking the road surface, and then guiding the wider part behind to embed into the bottom of the complex road surface, so that the grounding area of the second tread block can be increased, improving the grip performance; further, a similar first end portion is also provided on the first tread block, and the fourth wall points to the first end portion, enabling the first end portion to continue the second end portion, continue to break the road surface, increase the grounding area of the first tread block, and improve the grip performance; moreover, since the first tread block and the second tread block are arranged at intervals, a groove is formed between the first tread block and the second tread block, thereby improving the drainage and sand discharge performance of the tread structure on muddy and sandy road surfaces; therefore, the tread structure helps to improve the grip performance of the tire on unpaved roads.

[0007] According to some embodiments of the present application, the fourth wall points to the tip of the first end portion, and a first chamfer is provided at the tip of the first end portion.

[0008] According to some embodiments of the present application, a second chamfer is provided on the side of the second end portion close to the first end portion.

[0009] According to some embodiments of the present application, the first tread block is provided with a first groove, and a plurality of the first grooves are arranged at intervals in the extending direction of the first tread block, and the first groove penetrates the first tread block to divide the first tread block into a plurality of first sub-blocks.

[0010] According to some embodiments of the present application, the first tread block is provided with a first groove, and the first groove is located at the intersection of the first groove and the wall of the first tread block.

[0011] According to some embodiments of the present application, the second tread block extends obliquely outward from the second end portion.

[0012] According to some embodiments of the present application, the second tread block is provided with a second groove, and a plurality of the second grooves are arranged at intervals in the extending direction of the second tread block, and the second groove penetrates the second tread block to divide the second tread block into a plurality of second sub-blocks.

[0013] According to some embodiments of the present application, the tread structure further includes a shoulder tread structure, and the shoulder tread structure is arranged on both sides of the intermediate tread structure at intervals in the transverse direction.

[0014] According to some embodiments of the present application, the shoulder tread structure includes a third tread block and a reinforcing rib, the third tread blocks are arranged at intervals in the circumferential direction, the reinforcing rib is connected between two adjacent third tread blocks, and the height of the reinforcing rib is lower than that of the third tread block.

[0015] The tire for improving the grip performance provided by the present application includes the tread structure provided by the present application.

[0016] The tire for improving the grip performance provided by the present application includes the tread structure provided by the present application. Therefore, the tire for improving the grip performance correspondingly has the beneficial effects provided by the tread structure, which will not be elaborated herein. Description of the Drawings

[0017] The drawings are used to provide a further understanding of the technical solutions disclosed in the present application, and constitute a part of the specification. Together with the embodiments disclosed in the present application, they are used to explain the technical solutions of the present disclosure, and do not constitute a limitation on the technical solutions disclosed in the present application.

[0018] Figure 1 It is a schematic diagram of the overall structure of the tread structure of the embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of a partial structure of the tread structure of the embodiment of the present application, which shows the layout relationship between the first tread block and the second tread block;

[0020] Figure 3 It is a schematic diagram of a partial structure of the tread structure of the embodiment of the present application, which shows the layout relationship between the third tread block and the reinforcing rib, and the reinforcing rib is represented by a dotted line.

[0021] Reference Signs:

[0022] The first tread block 100, the first end 110, the first wall 111, the second wall 112, the first chamfer 113, the first groove 140, the first recess 150;

[0023] The second tread block 200, the second end 210, the third wall 211, the fourth wall 212, the second chamfer 213, the second groove 240, the third chamfer 250;

[0024] The third tread block 300, the third groove 310;

[0025] The reinforcing rib 410;

[0026] The first connecting rib 510, the second connecting rib 520, the reinforcing block 530. Detailed Embodiments

[0027] The following details the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0028] In the description of the present application, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0029] In the description of the present application, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present application, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific content of the technical solution.

[0031] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] On unpaved roads, such as in off-road environments, the grip performance of tires is relatively important. The tread structures in some related technologies are difficult to break through the road surface well, resulting in the need to improve the grip performance.

[0033] Refer to Figure 1 and Figure 2, the tread structure provided by this application includes an intermediate tread pattern structure. The intermediate tread pattern structure includes a first tread block 100 and a second tread block 200. The first tread block 100 is disposed in the middle of the tread structure. Two sets of second tread blocks 200 are disposed on both sides of the first tread block 100 at intervals in the transverse direction. The first tread block 100 extends obliquely between the second tread blocks 200. Among them, the first tread block 100 includes a first end portion 110 that protrudes forward in the circumferential direction, and the transverse width of the first end portion 110 gradually increases in the circumferential direction. The second tread block 200 includes a second end portion 210 that protrudes forward in the circumferential direction. The first end portion 110 faces the second end portion 210, and the transverse width of the second end portion 210 gradually increases in the circumferential direction. The second end portion 210 includes a third wall 211 and a fourth wall 212 that meet at the tip. The third wall 211 extends obliquely outward from the tip, and the fourth wall 212 extends obliquely from the tip toward the first end portion 110.

[0034] It can be understood that the tread structure is used to construct the tread of a tire. The circumferential direction refers to the direction along the circumference of the tire after it is formed. Figure 1 It is shown by the Z-axis in the figure. The tread structure extends in the circumferential direction, and the intermediate tread pattern structure repeats continuously in the circumferential direction. The repeated pitch width can be 25 mm to 75 mm, and the number of pitches is 20 to 80; the transverse direction refers to the direction perpendicular to the circumferential direction, and it is shown by the X-axis in the figure.

[0035] The tread structure contacts the road surface during driving. The front and rear of the tread structure are determined according to the order of contacting the road surface. Gradually increasing in the circumferential direction means that the first end portion 110 and the second end portion 210 contact the road surface in a manner of becoming wider from narrow from front to back.

[0036] First of all, by setting the gradually increasing second end portion 210, the tip of the second end portion 210 is suitable for breaking the road surface, and then guiding the wider part behind to embed into the bottom of the complex road surface, so that the contact area of the second tread block 200 with the ground can be increased, and the grip performance can be improved.

[0037] Furthermore, a similar first end portion 110 is also provided on the first tread block 100, and the fourth wall 212 points to the first end portion 110, which can make the first end portion 110 continue the second end portion 210 to continue breaking the road surface, increase the contact area of the first tread block 100 with the ground, and improve the grip performance.

[0038] Moreover, since the first tread block 100 and the second tread block 200 are disposed at intervals, a main groove is generated between the first tread block 100 and the second tread block 200 (especially an interval is generated between the fourth wall 212 and the first end portion 110), so that the drainage and sand discharge performance of the tread structure on muddy roads and fine sand roads can be improved.

[0039] Therefore, the tread structure helps to improve the grip performance of the tire on unpaved roads.

[0040] It should be noted that, referring to Figure 1 , since the tread structure of the present application is applicable to all-terrain tires and the working condition is an off-road condition, the tread structure adopts a symmetrical design. That is to say, the first tread block 100 is symmetrical with respect to its own center. The first tread block 100 has two first ends 110 facing different circumferential directions. The second tread blocks 200 on both sides are centrosymmetric around the center of the first tread block 100, and the second ends 210 of the second tread blocks 200 on both sides face different circumferential directions.

[0041] In this way, regardless of whether the tire rotates forward or backward, it can ensure that there are the first ends 110 and the second ends 210 that gradually increase along the forward route (that is, there are always the first ends 110 and the second ends 210 contacting the road surface in the order of narrow to wide from front to back), ensuring the passing performance in complex environments.

[0042] In addition, each group of the second tread blocks 200 may include one row or multiple rows of the second tread blocks 200. The orientations of the second tread blocks 200 in each row may be the same or different. The present application does not limit this. For ordinary-sized tires, as Figure 1 shown, one row of the second tread blocks 200 in each group is sufficient.

[0043] The present application also provides a tire with improved grip performance. The tire with improved grip performance includes the tread structure of the present application.

[0044] The tire with improved grip performance includes a tread structure, so it correspondingly has the beneficial effects provided by the tread structure, which will not be elaborated here.

[0045] Optionally, in some embodiments, the fourth wall 212 points to the tip of the first end 110, and a first chamfer 113 is provided at the tip of the first end 110.

[0046] The first chamfer 113 makes the tip of the first end 110 more three-dimensional, increases the contact area between the tire tread and the road surface when the tire is running on special road surfaces such as mountain roads, muddy roads, and sandy roads. The beveled design can effectively cut into the interior of obstacles on muddy and sandy road surfaces, breaking the surface tension of the obstacles, so that the tire has higher grip and friction, which is beneficial to the handling performance and passing performance of the tire on special road surfaces. The first chamfer 113 can also disperse the stress at the tip position, preventing the tip position from being too concentrated in force and causing cracking and chipping.

[0047] Optionally, a second chamfer 213 is provided on the side of the second end 210 close to the first end 110. The second chamfer 213 and the first chamfer 113 can increase the size of the groove between the second end 210 and the first end 110, improving the drainage and sand discharge performance of the tread structure on muddy water roads and fine sand roads.

[0048] Similarly, in the second pattern block 200 in a row, a third chamfer 250 can be provided at a position on the second pattern block 200 near the second end 210 of an adjacent second pattern block 200.

[0049] It can be understood that, optionally, in order to improve the embedding effect, after the first end 110 and the second end 210 adopt a design that is narrow at the front and wide at the back, the remaining parts of the first pattern block 100 connected behind the first end 110 and the remaining parts of the second pattern block 300 connected behind the second end 210 are designed to be wider than the pattern blocks of the conventional tread structure, so as to increase the ground contact area, passing ability and wear performance.

[0050] However, after the size is increased, the first pattern block 100 and the second pattern block 200 are more likely to crack due to stress concentration.

[0051] For this reason, optionally, the first pattern block 100 is provided with a first groove 140, and a plurality of first grooves 140 are arranged at intervals in the extending direction of the first pattern block 100, and the first groove 140 penetrates through the first pattern block 100 to divide the first pattern block 100 into a plurality of first sub-blocks.

[0052] The first groove 140 is used to disperse the stress of the whole first pattern block 100 and prevent the first pattern block 100 from cracking due to stress concentration. At the same time, the arrangement of the first grooves 140 and the design that the first pattern block 100 gradually widens from the first ends 110 at both ends to the middle make the first pattern block 100 form a multi-jointed worm-like shape, similar to the bionic "worm shape", and obtain better wear resistance. Since the first groove 140 is a narrow groove, its depth range is 1 mm to 10 mm, which is relatively short and shallow. When deformed, the first ends 110 at both ends can form a two-way support for the wider part in the middle, improving the overall rigidity of the middle position and the grip performance of the first pattern block 100, thereby improving the passing ability.

[0053] In addition, the first groove 140 can absorb the moisture on the wet and slippery road surface and quickly drain the water on the tire contact surface to the wide main groove, preventing the tire from slipping when driving on the wet and slippery road surface.

[0054] Optionally, the first pattern block 100 is further provided with a first groove 150, and the first groove 150 is located at the intersection of the first groove 140 and the wall of the first pattern block 100. The first groove 150 helps to further promote the drainage ability.

[0055] It should be noted that Figure 1 、 Figure 2In the illustrated embodiment, the first groove 150 is provided at the intersection of two walls with an included angle greater than 180°, which can play a role of avoiding when the first sub-blocks are mutually extruded, allowing a greater deformation of the edges of the first sub-blocks.

[0056] Optionally, the second tread block 200 extends obliquely outward from the second end 210. The second tread block 200 is provided with second grooves 240. A plurality of second grooves 240 are spaced apart in the extending direction of the second tread block 200. The second grooves 240 penetrate through the second tread block 200 to divide the second tread block 200 into a plurality of second sub-blocks.

[0057] The second tread block 200 extends backward from the second end 210. Similar to the first groove 140, the second groove 240 can prevent the second tread block 200 from cracking due to stress concentration. At the same time, the arrangement of the second grooves 240 and the design that the second tread block 200 gradually widens from the second grooves 240 backward make the second tread block 200 form a multi-jointed shape with a pointed front and a wide rear, similar to a bionic "croissant shape", obtaining better wear resistance.

[0058] The second grooves 240 can also absorb the moisture on the wet and slippery road surface, quickly drain the water on the tire contact surface to the wide main groove, and prevent the tire from slipping when driving on the wet and slippery road surface.

[0059] Refer to Figure 1 , the tread structure further includes shoulder tread structures, and the shoulder tread structures are spaced apart in the transverse direction on both sides of the intermediate tread structure. In Figure 1 , the range where the intermediate tread structure is located is shown by the mark A, and the range where the shoulder tread structures are located is shown by the mark B. The shoulder tread structures and the intermediate tread structure are also separated by a wide main groove, playing an effect of draining water and sand.

[0060] Further refer to Figure 1 and Figure 3 , the shoulder tread structure includes third tread blocks 300 and reinforcing ribs 410. The third tread blocks 300 are spaced apart in the circumferential direction. The reinforcing ribs 410 are connected between two adjacent third tread blocks 300, and the height of the reinforcing ribs 410 is lower than that of the third tread blocks 300.

[0061] The third tread blocks 300 are connected in series into a whole by the reinforcing ribs 410 at the head and tail, which can improve the strength of the tire shoulder, improve the wear resistance, increase the mutual support between the third tread blocks 300 during deformation, reduce excessive deformation, so as to enhance the tensile and tear resistance of the third tread blocks 300, thereby ensuring the grip of the tire on special road surfaces.

[0062] Since the height of the reinforcing rib 410 is lower than that of the third tread block 300, it can avoid having an excessive negative impact on drainage.

[0063] Optionally, the third tread block 300 is divided into a plurality of third sub-blocks by a laterally extending third groove 310. Using fine grooves for segmentation disperses the stress on the tire shoulder and improves safety performance. The third groove 310 also plays a role in absorbing and draining water, preventing the tire from slipping at high speeds. At this time, the third tread block 300 presents a bionic "pupa shape".

[0064] Optionally, the shoulder tread structure further includes a first connecting rib 510 and a second connecting rib 520. The first connecting rib 510 is located at the junction of the side surface and the grounding surface of the tire, and the second connecting rib 520 is located on the side surface of the tire.

[0065] The first connecting rib 510 can connect the third tread block 300, increase the strength of the third tread block 300, and effectively enhance the drainage and sand discharge performance of the third tread block 300; the first connecting rib 510 can also play a role in positioning the demoulding surface in the mold, ensuring the assembly accuracy of the mold.

[0066] The second connecting rib 520 can strengthen and thicken the side surface, increase the sidewall strength of the tire, and play a role in protecting the sidewall of the tire.

[0067] Similarly, raised reinforcing blocks 530 can be provided on the side surface to strengthen and thicken the side surface, play a role in protecting the sidewall of the tire, and effectively prevent foreign objects from cutting and scratching the sidewall on special road surfaces. Moreover, the reinforcing blocks 530 can also play a marking role. For example, the shape can be designed as a conical column and a mountain peak shape, enabling consumers to more intuitively know the main usage environment of the tire (off-road, all-terrain). At the same time, the reinforcing blocks 530 can also adopt a multi-directional knurling line design to increase the aesthetics of the shoulder position.

[0068] In some alternative embodiments, the functions / operations mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the functions / operations involved, two consecutively shown blocks can actually be executed substantially simultaneously or the blocks can sometimes be executed in the reverse order. In addition, the embodiments presented and described in the flowcharts of the present application are provided by way of example for the purpose of providing a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logical flows presented herein. Alternative embodiments are foreseeable, in which the order of various operations is changed and the sub-operations described as part of a larger operation are executed independently.

[0069] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A tread structure, characterized in that: include: an intermediate pattern structure, the intermediate pattern structure comprising a first pattern block and a second pattern block, the first pattern block being arranged in the middle of the tread structure, two groups of the second pattern blocks being arranged at intervals on both sides of the first pattern block in a transverse direction, and the first pattern block extending obliquely between the second pattern blocks; Among them, the first pattern block includes a first end portion protruding forward in the circumferential direction, and the lateral width of the first end portion gradually increases along the circumferential direction; the second pattern block includes a second end portion protruding forward in the circumferential direction, the first end portion is opposite to the second end portion, and the lateral width of the second end portion gradually increases along the circumferential direction; the second end portion includes a third wall and a fourth wall meeting at a tip, the third wall extends obliquely outward from the tip, and the fourth wall extends obliquely from the tip toward the first end portion.

2. The tread structure according to claim 1, characterized in that: The fourth wall points to a tip of the first end portion, and the tip of the first end portion is provided with a first cut angle.

3. The tread structure according to claim 2, characterized in that: A second cut angle is arranged on a side of the second end close to the first end.

4. The tread structure according to claim 1, characterized in that: The first pattern block is provided with a first groove, a plurality of the first grooves are arranged at intervals in the extending direction of the first pattern block, and the first grooves penetrate the first pattern block to divide the first pattern block into a plurality of first sub-blocks.

5. The tread structure according to claim 4, characterized in that: The first pattern block is provided with a first groove, and the first groove is located at the intersection of the first groove and the wall of the first pattern block.

6. The tread structure according to claim 1, characterized in that: The second pattern block extends obliquely outward from the second end portion.

7. The tread structure according to claim 6, characterized in that: The second pattern block is provided with a second groove, a plurality of the second grooves are arranged at intervals in the extending direction of the second pattern block, and the second grooves penetrate the second pattern block to divide the second pattern block into a plurality of second sub-blocks.

8. The tread structure according to claim 1, characterized in that: The tread structure further includes a shoulder pattern structure, which is arranged at intervals on both sides of the middle pattern structure in a transverse direction.

9. The tread structure according to claim 8, characterized in that: The shoulder pattern structure includes a third pattern block and a reinforcing rib, the third pattern blocks are arranged at intervals in the circumferential direction, the reinforcing rib is connected between two adjacent third pattern blocks, and the height of the reinforcing rib is lower than that of the third pattern block.

10. A tire with improved grip performance, characterized in that: The tire with improved road grip performance comprises the tread structure according to any one of claims 1 to 9.

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