Tread structure and tire
By designing the inner shoulder ribs, middle ribs and outer shoulder ribs in the tread structure, the problem of difficult to take into account both the drainage performance and handling of the tire on the slippery road surface is solved, and stable handling performance and optimized tread structural performance are achieved.
Patent Information
- Application Number
- CN202422151380.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Existing tires are difficult to take into account both drainage performance and handling on slippery roads, resulting in reduced slippage and handling.
A tread structure is designed, including the inner shoulder ribs, the middle ribs and the outer shoulder ribs. The outer shoulder ribs focus on handling performance, the inner shoulder ribs focus on drainage performance, and the middle ribs maintain appropriate rigidity to reduce deformation when in contact with the ground.
It realizes the stable handling and braking performance of the tires on slippery roads, while ensuring silent and comfortable performance, achieving optimization and balance of tread structural performance.
Smart Images
Figure CN223001322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tires, in particular to a tread structure and a tire. Background Art
[0002] The design of a tire tread needs to consider multiple factors. In addition to the conventional safety performance, wear performance, etc. which are the focus of users' attention, the comfort, handling performance, braking performance, and rolling resistance performance of the tire are also attracting more and more attention.
[0003] In the related art, a plurality of grooves are uniformly arranged along the circumferential direction of the tire tread. In order to reduce the skidding of the vehicle on a wet road surface, the grooves need to be designed with a relatively wide notch size to drain rainwater. However, the surface rigidity of the tire will be significantly reduced, and large deformation is likely to occur when the tire contacts the ground, greatly reducing the handling performance of the tire. It is difficult to balance the drainage performance and the handling performance of the tire. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a tread structure and a tire to solve the problem that it is difficult to balance the drainage performance and the handling performance of the tire in the related art.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] In the first aspect, the utility model provides a tread structure, which includes a tread surface. Two first main grooves are arranged on the tread surface. The first main grooves extend along the circumferential direction of the tread surface. The two first main grooves are arranged at intervals along the axial direction of the tread surface. The two first main grooves divide the tread surface from the inside to the outside in sequence and form an inner shoulder rib, a middle rib, and an outer shoulder rib, where:
[0007] One or more second main grooves are arranged on the middle rib. Each second main groove extends along the circumferential direction of the tread surface to divide the middle rib and form a plurality of sub-ribs. A plurality of middle knife grooves are arranged on each sub-rib. The plurality of middle knife grooves are arranged at intervals in the circumferential direction of the tread surface, and the shapes of the middle knife grooves on the plurality of sub-ribs are different and are asymmetric shapes;
[0008] A plurality of outer lateral grooves and a plurality of outer knife grooves are arranged on the outer shoulder rib. The plurality of outer lateral grooves are arranged at intervals in the circumferential direction of the tread surface. The outer knife grooves intersect and communicate with the outer lateral grooves. One end of the outer knife groove is connected to the first main groove, and the other end of the outer knife groove extends towards the outer edge of the tread surface;
[0009] A plurality of inner lateral grooves and a plurality of inner sipe are provided on the inner shoulder rib. The plurality of inner lateral grooves are spaced apart in the circumferential direction of the tire surface. One end of each inner lateral groove communicates with the first main groove, and the other end extends towards the inner edge of the tire surface. Each inner sipe is disposed between two adjacent inner lateral grooves, and the inner sipe has a different shape and an asymmetric shape from the outer sipe.
[0010] In one embodiment, the central sipe includes an oblique straight line. One end of the oblique straight line is a closed end, and the other end of the oblique straight line communicates with the first main groove or the second main groove; or, both ends of the oblique straight line respectively communicate with the first main groove or the second main groove; and / or,
[0011] The central sipe includes an oblique curve. The oblique curve has one or more corners. One end of the oblique curve is a closed end, and the other end of the oblique curve communicates with the first main groove or the second main groove; or, both ends of the oblique curve respectively communicate with the first main groove or the second main groove.
[0012] In one embodiment, the central sipe on two adjacent sub-ribs correspond to each other in position. Among the two central sipe corresponding in position, the inner end of the central sipe located on the outer side extends along the extension line of the outer end of the central sipe located on the inner side; and / or,
[0013] The outer sipe on the outer shoulder rib corresponds to the central sipe on the adjacent sub-rib in position, and the inner end of the outer sipe extends along the extension line of the outer end of the central sipe; and / or,
[0014] The inner lateral groove on the inner shoulder rib corresponds to the central sipe on the adjacent sub-rib in position, and the outer end of the inner lateral groove extends along the extension line of the inner end of the central sipe.
[0015] In one embodiment, the surface of the outer shoulder rib is an arc surface. A first diversion inclined surface is provided at the opening of the outer lateral groove. The size of the first diversion inclined surface gradually increases from the inner end to the outer end of the outer lateral groove. The first diversion inclined surface is provided on one side wall or opposite side walls of the outer lateral groove, and / or,
[0016] The surface of the inner shoulder rib is an arc surface. A second flow guiding slope is provided at the opening of the inner lateral groove. The size of the second flow guiding slope gradually increases from the outer end to the inner end of the inner lateral groove. The second flow guiding slope is provided on one side wall or two opposite side walls of the inner lateral groove.
[0017] In one embodiment, the inner lateral groove at least includes a first groove section and a second groove section that are connected and communicate with each other. The first groove section communicates with the first main groove. The second flow guiding slope is provided on the second groove section.
[0018] Wherein, the cross-sectional dimension of the first groove section is smaller than that of the second groove section, and the extending direction of the first groove section intersects with the extending direction of the second groove section.
[0019] In one embodiment, the outer sipes at least include a first sipes section, a second sipes section, and a third sipes section that are connected in sequence. The first sipes section communicates with the first main groove. The third sipes section extends towards the outer edge of the tread surface. The first sipes section and the third sipes section are respectively arranged on both sides of the outer lateral groove and extend in the same direction along the extending direction of the outer lateral groove. The extending direction of the second sipes section intersects with the extending direction of the outer lateral groove and the second sipes section communicates with the outer lateral groove.
[0020] In one embodiment, a plurality of flow blocking components are arranged in the first main groove and / or the second main groove. The flow blocking components are used to reduce the flow of gas in the first main groove or the second main groove. The plurality of flow blocking components are arranged at intervals along the circumferential direction of the tread surface.
[0021] In one embodiment, the flow blocking component includes a first flow blocking block and a second flow blocking block. The first flow blocking block and the second flow blocking block are respectively arranged on the opposite groove walls of the first main groove or the second main groove. There is a spacing between the first flow blocking block and the second flow blocking block to form an air flow channel. The air flow channel is a linear channel or a curved channel extending along the circumferential direction of the tread surface.
[0022] In one embodiment, the pitches between the plurality of middle sipes on each sub-rib are not equal; and / or,
[0023] the pitches between the plurality of outer lateral grooves are not equal; and / or,
[0024] the pitches between the plurality of inner lateral grooves are not equal; and / or,
[0025] The notch size of the outer lateral groove is smaller than that of the inner lateral groove.
[0026] In a second aspect, the present invention provides a tire, including a tire body and the tread structure in any of the above solutions, and the tread structure is disposed on the tire body.
[0027] The beneficial effects of the present invention are as follows:
[0028] The present invention provides a tread structure and a tire. On the tread surface of the tread structure, there are provided an inner shoulder rib, a middle rib, and an outer shoulder rib. The design of the outer shoulder rib focuses on the handling performance, the design of the inner shoulder rib focuses on the drainage performance, and the design of the middle rib focuses on maintaining an appropriate rigidity and reducing large deformations when contacting the ground, so that the overall tread structure has both stable handling performance and braking performance, and also ensures the noise reduction and comfort performance, achieving the optimization and balance of the tread structure performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 is a schematic structural diagram of the tread structure in an embodiment of the present invention;
[0030] Figure 2 is a schematic structural diagram of the outer knife groove pattern in an embodiment of the present invention;
[0031] Figure 3 is a schematic cross-sectional diagram of the outer lateral groove and the first diversion slope in an embodiment of the present invention;
[0032] Figure 4 is a schematic structural diagram of the inner lateral groove in an embodiment of the present invention;
[0033] Figure 5 is a schematic cross-sectional diagram of the inner lateral groove and the second diversion slope in an embodiment of the present invention;
[0034] Figure 6 is a schematic structural diagram of the flow blocking component in an embodiment of the present invention;
[0035] Figure 7 is a schematic cross-sectional diagram of the flow blocking component in an embodiment of the present invention.
[0036] In the figure:
[0037] 1, tread surface;
[0038] 2, first main groove;
[0039] 3, second main groove;
[0040] 4, inner shoulder rib; 41, inner lateral groove; 411, first groove section; 412, second groove section; 42, inner knife groove pattern; 43, second diversion slope;
[0041] 5. Middle rib; 51. Sub-rib; 51a. Middle-outer rib; 51b. Middle-middle rib; 51c. Middle-inner rib; 52. Middle knife groove pattern; 521. Oblique straight pattern; 522. Oblique curved pattern;
[0042] 6. Outer shoulder rib; 61. Outer lateral groove; 62. Outer knife groove pattern; 621. First groove segment; 622. Second groove segment; 623. Third groove segment; 63. First flow guiding inclined surface;
[0043] 7. Flow blocking component; 71. First flow blocking block; 72. Second flow blocking block; 73. Air flow channel. Detailed implementation manners
[0044] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.
[0045] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0046] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.
[0047] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0048] As Figure 1 shown, an embodiment of the first aspect of the present utility model provides a tread structure. The tread structure includes a tread surface 1, on which there are two first main grooves 2. The first main grooves 2 extend along the circumferential direction of the tread surface 1. The two first main grooves 2 are spaced along the axial direction of the tread surface 1. The two first main grooves 2 divide the tread surface 1 from the inside to the outside in sequence and form an inner shoulder rib 4, a middle rib 5, and an outer shoulder rib 6. Among them, there is one or more second main grooves 3 on the middle rib 5. Each second main groove 3 extends along the circumferential direction of the tread surface 1 to divide the middle rib 5 and form a plurality of sub-ribs 51. The first main grooves 2 and the second main grooves 3 can not only partition the tread surface 1, but also have a relatively large depth and groove width, forming good drainage performance.
[0049] There are a plurality of middle sipes 52 on each sub-rib 51. The plurality of middle sipes 52 are spaced in the circumferential direction of the tread surface 1, and the shapes of the middle sipes 52 on the plurality of sub-ribs 51 are different and are asymmetric shapes. Compared with a solid rib, the middle sipes 52 can effectively reduce the stiffness of the middle rib 5, and further reduce the stiffness of the crown center area of the tread surface 1, improving the comfort of the tire. Compared with a wider groove, only a plurality of middle sipes 52 are provided as dividing lines on each sub-rib 51, which can effectively enhance the rigidity of the middle rib 5. When starting, braking, or turning, the large-area deformation when the tire contacts the ground is reduced, and the performance of the tire such as handling, wear, rolling resistance, and braking can be effectively maintained while improving the comfort of the tire.
[0050] A plurality of outer lateral grooves 61 and a plurality of outer sipes 62 are provided on the outer shoulder rib 6. The plurality of outer lateral grooves 61 are spaced in the circumferential direction of the tread surface 1. The outer sipes 62 intersect and communicate with the outer lateral grooves 61, facilitating the reduction of the drainage path of the outer sipes 62. The water in the first main groove 2 or the water within the surface contact range of the outer shoulder rib 6 can enter the outer lateral grooves 61 through the outer sipes 62 first and then be discharged, enabling quick drainage. One end of the outer sipes 62 is connected to the first main groove 2, and the other end of the outer sipes 62 extends towards the outer edge of the tread surface 1. The width of the outer sipes 62 is much smaller than the width of the outer lateral grooves 61. The outer sipes 62 can not only form a certain drainage space and form combined drainage with the outer lateral grooves 61 to ensure the drainage performance, but also increase the contact area between the outer shoulder rib 6 and the ground, avoid setting a relatively large notch width at the outer lateral grooves 61, maintain the rigidity of the tire, and improve the handling performance of the tire. The outer lateral grooves 61 and the outer sipes 62 can effectively discharge the rainwater within the surface contact range of the outer shoulder rib 6, and the outer lateral grooves 61 are not connected to the first main groove 2, which can effectively ensure the rigidity of the outer shoulder rib 6, reduce the deformation when the outer shoulder rib 6 contacts the ground, and maintain the steering and handling stability performance of the tire.
[0051] A plurality of inner lateral grooves 41 and a plurality of inner sipes 42 are provided on the inner shoulder rib 4. The plurality of inner lateral grooves 41 are spaced in the circumferential direction of the tread surface 1. One end of the inner lateral groove 41 is connected to the first main groove 2, and the other end extends towards the inner edge of the tread surface 1, so as to quickly discharge the water within the first main groove 2 and the surface contact range of the inner shoulder rib 4, avoid the formation of a water film, enhance the drainage performance, avoid slipping, and also improve the riding comfort performance of the tire and reduce the noise. Each inner sipe 42 is provided between two adjacent inner lateral grooves 41. The inner sipes 42 have a different shape from the outer sipes 62 and are asymmetric, enabling the combined pattern of the inner sipes 42 and the outer sipes 62 to increase the contact area with the ground, enhance the grip, and improve the handling performance. The inner sipes 42 can not only form a certain drainage space and form combined drainage with the outer lateral grooves 61 to ensure the drainage performance, but also the outer sipes 62 can increase the contact area between the outer shoulder rib 6 and the ground, avoid setting a relatively large notch width at the outer lateral grooves 61, maintain the rigidity of the tire, and improve the handling performance of the tire.
[0052] The design of the outer shoulder rib 6 of the tread structure in this embodiment focuses on handling performance, the design of the inner shoulder rib 4 focuses on drainage performance, and the design of the middle rib 5 focuses on maintaining appropriate rigidity to reduce large deformation when contacting the ground. As a result, the overall tread structure not only has stable handling performance and braking performance but also ensures quiet and comfortable performance, achieving the optimization and balance of the tread structure performance and solving the problem in the related art that it is difficult to balance the drainage performance and handling performance of the tire.
[0053] As Figure 1 shown, in some embodiments, the middle sipes 52 include diagonal straight sipes 521. One end of the diagonal straight sipes 521 is a closed end, and the other end of the diagonal straight sipes 521 is connected to the first main groove 2 or the second main groove 3; alternatively, both ends of the diagonal straight sipes 521 are respectively connected to the first main groove 2 or the second main groove 3. And / or, the middle sipes 52 include diagonal curved sipes 522. The diagonal curved sipes 522 have one or more corners. One end of the diagonal curved sipes 522 is a closed end, and the other end of the diagonal curved sipes 522 is connected to the first main groove 2 or the second main groove 3; alternatively, both ends of the diagonal curved sipes 522 are respectively connected to the first main groove 2 or the second main groove 3. That is, multiple diagonal straight sipes 521 can be provided only on each sub-rib 51. One end of the diagonal straight sipes 521 can be connected to the first main groove 2 or the second main groove 3, or both ends can be respectively connected to the first main groove 2 or the second main groove 3. Alternatively, multiple diagonal curved sipes 522 can be provided only on each sub-rib 51. One end of the diagonal curved sipes 522 can be connected to the first main groove 2 or the second main groove 3, or both ends can be respectively connected to the first main groove 2 or the second main groove 3. Alternatively, diagonal straight sipes 521 and diagonal curved sipes 522 can be provided simultaneously on each sub-rib 51 and are arranged alternately. The design of the middle sipes 52 is diverse, which can effectively increase the contact area with the ground, improve the handling performance, and also reduce the stiffness of the middle rib 5 and increase the comfort.
[0054] As Figure 1As shown, in some embodiments, the middle knife grooves 52 on two adjacent sub-ribs 51 correspond to each other in position one by one. Among the two middle knife grooves 52 corresponding to each other in position, the inner end of the middle knife groove 52 located on the outer side extends along the extension direction of the outer end of the middle knife groove 52 located on the inner side. And / or, the outer knife grooves 62 on the outer shoulder rib 6 correspond to the middle knife grooves 52 on the adjacent sub-ribs 51 in position one by one, and the inner end of the outer knife groove 62 extends along the extension direction of the outer end of the middle knife groove 52. And / or, the inner lateral grooves 41 on the inner shoulder rib 4 correspond to the middle knife grooves 52 on the adjacent sub-ribs 51 in position one by one, and the outer end of the inner lateral groove 41 extends along the extension direction of the inner end of the middle knife groove 52. The outer knife grooves 62, the multiple rows of middle knife grooves and the inner knife grooves 42 correspond to each other in position, and the extension directions of the adjacent knife groove segments at the head and tail are the same, facilitating smooth stress transition.
[0055] As Figure 1 shown, for example, two second main grooves 3 can be provided on the middle rib 5 to divide and form three sub-ribs 51 on the middle rib 5, which can be respectively denoted as the middle-outer rib 51a, the middle-middle rib 51b and the middle-inner rib 51c. The middle-inner rib 51c is provided with middle-inner knife grooves. Optionally, the middle-inner knife grooves can be configured as oblique curved lines 522. The oblique curved lines 522 of the middle-inner knife grooves are arranged at intervals along the circumferential direction of the tire surface 1. The oblique curved lines 522 of the middle-inner knife grooves can be provided with a corner with the tip facing downwards. The middle-middle rib 51b is provided with middle-middle knife grooves. Optionally, the middle-middle knife grooves can be configured as a combined texture in which long oblique straight lines 521 and short oblique straight lines 521 are arranged at intervals. The two ends of the long oblique straight line 521 are respectively communicated with the second main groove 3. One end of the short oblique straight line 521 is a closed end, and the other end is communicated with the second main groove 3, which can effectively reduce the stiffness of the middle-middle rib 51b part. The middle-outer rib 51a is provided with middle-outer knife grooves. Optionally, the middle-outer knife grooves can be configured as a combined texture in which oblique curved lines 522 and oblique straight lines 521 are arranged at intervals. One end of the oblique curved line 522 of the middle-outer knife grooves is a closed end, and the other end is communicated with the second main groove 3. The oblique curved line 522 of the middle-outer knife grooves can be provided with an inflection point with the tip facing upwards. One end of the oblique straight line 521 of the middle-outer knife grooves is a closed end, and the other end is communicated with the first main groove 2. Optionally, the setting intervals of the multiple middle knife grooves 52 are not equal to reduce the resonance situation, thereby reducing the noise. The middle rib 5 adopts knife grooves with the same or different shapes, which are alternately distributed, can effectively reduce the height of the middle part of the tire surface 1, and compared with wide grooves, the width and interval distance of the middle knife grooves 52 are smaller. When starting, braking or turning, the mutual support of the middle rib 5 during deformation can be increased, excessive deformation can be reduced, and the stiffness of the middle rib 5 can be enhanced, effectively improving the quietness and comfort while maintaining the handling performance of the tire.
[0056] As Figures 1 to 3 shown, in some embodiments, the surface of the outer shoulder rib 6 is an arc surface, a first flow guiding inclined surface 63 is arranged at the opening of the outer lateral groove 61, the size of the first flow guiding inclined surface 63 gradually increases from the inner end to the outer end of the outer lateral groove 61, the first flow guiding inclined surface 63 is arranged on one side wall or opposite side walls of the outer lateral groove 61, the outer end of the outer lateral groove 61 is communicated with the external environment, and / or, the surface of the inner shoulder rib 4 is an arc surface, a second flow guiding inclined surface 43 is arranged at the opening of the inner lateral groove 41, the size of the second flow guiding inclined surface 43 gradually increases from the outer end to the inner end of the inner lateral groove 41, the second flow guiding inclined surface 43 is arranged on one side wall or opposite side walls of the inner lateral groove 41, the inner end of the inner lateral groove 41 is communicated with the external environment, that is, in the cross section in the axial direction of the tire, the surface of the outer shoulder rib 6 gradually decreases in height from the inner end to the outer end, and the surface of the inner shoulder rib 4 gradually decreases in height from the outer end to the inner end, both can form an arc surface in the axial direction. By arranging the first flow guiding inclined surface 63 at the opening of the outer lateral groove 61 and arranging the second flow guiding inclined surface 43 at the opening of the inner lateral groove 41, not only can the widths of the outer lateral groove 61 and the inner lateral groove 41 be increased, which is beneficial to improving the drainage performance of the tread structure, thereby improving the wetland safety performance, but also the overall grounding area of the tread structure can be increased, preventing premature wear at the end, and at the same time optimizing the tire noise, enhancing the handling performance and wear resistance of the tire.
[0057] As Figure 1 and Figures 4 to 5 shown, in some embodiments, the inner lateral groove 41 at least includes a first groove section 411 and a second groove section 412 which are communicated with each other. The first groove section 411 is communicated with the first main groove 2, and the second flow guiding inclined surface 43 is arranged on the second groove section 412. Among them, the cross-sectional dimension of the first groove section 411 is smaller than that of the second groove section 412. While improving the drainage performance, the stiffness of the circumferential rib structure at the position where the inner lateral groove 41 is communicated with the first main groove 2 can also be ensured, reducing the deformation when contacting the ground. The extending direction of the first groove section 411 intersects with the extending direction of the second groove section 412, that is, an inflection point can be formed at the connection of the first groove section 411 and the second groove section 412, which can not only increase the overall flow guiding volume of the inner lateral groove 41, but also improve the overall stiffness of the inner shoulder rib 4.
[0058] As Figures 1 to 3As shown, in some embodiments, the outer knife groove pattern 62 at least includes a first groove pattern segment 621, a second groove pattern segment 622, and a third groove pattern segment 623 that are connected in sequence. The first groove pattern segment 621 communicates with the first main groove 2, and the third groove pattern segment 623 extends toward the outer side of the tread surface 1. The first groove pattern segment 621 and the third groove pattern segment 623 are disposed on both sides of the outer lateral groove 61 and extend in the same direction along the extension direction of the outer lateral groove 61. The extension direction of the second groove pattern segment 622 intersects the extension direction of the outer lateral groove 61 and the second groove pattern segment 622 communicates with the outer lateral groove 61, which can increase the layout length of the outer knife groove pattern 62, and the first groove pattern segment 621 and the third groove pattern segment 623 have the same extension direction as the outer lateral groove 61 to separate the outer shoulder rib 6, which can appropriately reduce the rigidity of the outer shoulder rib 6 and reduce the impact of the outer shoulder rib 6 on the ground, which is beneficial to improving comfort.
[0059] As Figure 1 and Figures 6 to 7 shown, in some embodiments, a plurality of flow blocking components 7 are provided in the first main groove 2 and / or the second main groove 3. The flow blocking components 7 are used to reduce the flow of gas in the first main groove 2 or the second main groove 3. The plurality of flow blocking components 7 are arranged at intervals along the circumferential direction of the tread surface 1 to obstruct the flow of gas in the first main groove 2 or the second main groove 3 and reduce the generation of pattern noise.
[0060] In this embodiment, the flow blocking component 7 can be, but is not limited to, one or more block structures, and the cross-sectional area of the block structure can be less than or equal to the cross-sectional area of the first main groove 2 or the second main groove 3. 6 to 20 flow blocking components 7 can be provided in each of the first main groove 2 or the second main groove 3.
[0061] As Figure 1 and Figures 6 to 7 shown, in some embodiments, the flow blocking component 7 includes a first flow blocking block 71 and a second flow blocking block 72. The first flow blocking block 71 and the second flow blocking block 72 are disposed on the opposite groove walls of the first main groove 2 or the second main groove 3. There is a spacing between the first flow blocking block 71 and the second flow blocking block 72 to form an air flow channel 73. The air flow channel 73 is a linear channel or a curved channel extending along the circumferential direction of the tread surface 1. The cross-sectional dimensions of the first flow blocking block 71 and the second flow blocking block 72 can be set according to the flow blocking needs. For example, the air flow channel 73 can be disposed in the middle position of the first main groove 2 or the second main groove 3. At this time, the dimensions of the first flow blocking block 71 and the second flow blocking block 72 can be designed to be equal. The air flow channel 73 can be disposed at a position close to one side groove wall of the first main groove 2 or the second main groove 3, and then the first flow blocking block 71 or the second flow blocking block 72 disposed on the corresponding side groove wall can be designed to have a smaller size.
[0062] As Figure 1As shown, in some embodiments, the pitch between multiple middle knife grooves 52 on each sub-rib 51 is not equal; and / or, the pitch between multiple outer lateral grooves 61 is not equal; and / or, the pitch between multiple inner lateral grooves 41 is not equal, which can avoid the resonance problem caused by the patterns with equal pitch, reduce resonance, and thus achieve the purpose of reducing noise. The notch size of the outer lateral groove 61 is smaller than that of the inner lateral groove 41, effectively increasing the contact area between the outer shoulder rib 6 and the ground, being beneficial to the turning control stability performance of the tire, and also reducing the deformation when the outer shoulder rib 6 contacts the ground, emphasizing the controllability. Moreover, the width of the inner lateral groove 41 is larger, effectively increasing the drainage of the inner shoulder rib 4.
[0063] As Figure 1 shown, in some embodiments, the ratio of the width of the middle rib 5 to the width of the tire surface 1 can be but is not limited to 0.4 - 0.6, and the ratio of the width of the inner shoulder rib 4 to the width of the tire surface 1 and the ratio of the width of the outer shoulder rib 6 to the width of the tire surface 1 can be but is not limited to 0.2 - 0.3. The width of each middle knife groove 52 is less than 3 mm, and the pitch width, pitch number, and width of the outer lateral groove 61 and the inner lateral groove 41 are the same or different. The pitch width of the middle knife groove 52, the outer lateral groove 61, the inner lateral groove 41, the outer knife groove 62, and the inner knife groove 42 can be but is not limited to 15 mm - 40 mm, and the pitch number can be but is not limited to 65 - 95. The groove walls of the first main groove 2 and the second main groove 3 can be groove walls with an inclined angle. The width of the first main groove 2 or the second main groove 3 can be but is not limited to 5 mm - 18 mm, and the variable angle of the pattern groove wall is 8° - 15°. For example, the first main groove 2 and the second main groove 3 can be a V-shaped or U-shaped structure with the bottom gradually narrowing on both sides of the groove walls. The first main groove 2 and the second main groove 3 not only improve the self-cleaning performance of the tire, but also the wide first main groove 2 and the second main groove 3 can quickly drain water, providing excellent wet anti-slip performance, turning stability, and precise steering response, being beneficial to the improvement of wet safety performance. The widths of the first main groove 2 and the second main groove 3 are the same or different. The depths of the middle knife grooves 52 on each sub-rib 51 can be equal or not equal to facilitate the formation of different stiffnesses.
[0064] As Figure 1As shown, the tire provided by the embodiment of the second aspect of the present utility model includes a tire body and the tread structure in any of the above solutions. The tread structure is disposed on the tire body. The tire adopts an asymmetric tread pattern structure. The design of the outer shoulder rib 6 focuses on handling stability performance, the design of the inner shoulder rib 4 focuses on drainage performance, and the design of the middle rib 5 focuses on maintaining appropriate rigidity to reduce large deformation when contacting the ground, so that the tread structure and the tire as a whole have both stable handling performance and braking performance, and also ensure quiet and comfortable performance, achieving the overall optimization and balance of tire performance.
[0065] Obviously, the above embodiments of the present utility model are merely examples for clearly explaining the present utility model, rather than limiting the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. A tread structure, characterized in that: The tire comprises a tire surface (1), wherein two first main grooves (2) are arranged on the tire surface (1), wherein the first main grooves (2) are arranged to extend along the circumferential direction of the tire surface (1), and the two first main grooves (2) are arranged to be spaced apart along the axial direction of the tire surface (1), and the two first main grooves (2) divide the tire surface (1) from the inside to the outside in sequence to form an inner shoulder rib (4), a middle rib (5) and an outer shoulder rib (6), wherein: One or more second main grooves (3) are arranged on the middle rib (5), each of the second main grooves (3) extending along the circumferential direction of the tire surface (1) to divide the middle rib (5) into a plurality of sub-ribs (51), each of the sub-ribs (51) is provided with a plurality of middle sipes (52), the plurality of middle sipes (52) are arranged at intervals in the circumferential direction of the tire surface (1), and the shapes of the middle sipes (52) on the plurality of sub-ribs (51) are different and asymmetrical; The outer shoulder rib (6) is provided with a plurality of outer lateral grooves (61) and a plurality of outer sipes (62), wherein the plurality of outer lateral grooves (61) are arranged at intervals in the circumferential direction of the tire surface (1), the outer sipes (62) cross and penetrate the outer lateral grooves (61), and one end of the outer sipe (62) is connected to the first main groove (2), and the other end of the outer sipe (62) is extended toward the outer side of the tire surface (1); The inner shoulder rib (4) is provided with a plurality of inner lateral grooves (41) and a plurality of inner sipes (42); the plurality of inner lateral grooves (41) are arranged at intervals in the circumferential direction of the tire surface (1); one end of the inner lateral groove (41) is connected to the first main groove (2), and the other end is extended toward the inner side edge of the tire surface (1); each inner sipe (42) is arranged between two adjacent inner lateral grooves (41); the inner sipe (42) and the outer sipe (62) have different shapes and are asymmetrical.
2. The tread structure according to claim 1, characterized in that: The middle sipe (52) comprises an oblique straight line (521), one end of the oblique straight line (521) is a closed end, and the other end of the oblique straight line (521) is connected to the first main groove (2) or the second main groove (3); or, both ends of the oblique straight line (521) are respectively connected to the first main groove (2) or the second main groove (3); and / or, The middle sipe (52) comprises an oblique curved pattern (522), wherein the oblique curved pattern (522) has one or more corners, one end of the oblique curved pattern (522) is a closed end, and the other end of the oblique curved pattern (522) is connected to the first main groove (2) or the second main groove (3); or, both ends of the oblique curved pattern (522) are respectively connected to the first main groove (2) or the second main groove (3).
3. The tread structure according to claim 1 or 2, characterized in that: The middle sipes (52) on two adjacent ribs (51) correspond to each other in position, and the inner end of the middle sipe (52) located on the outer side of the two middle sipes (52) located on the inner side extends along the extension line of the outer end of the middle sipe (52) located on the inner side; and / or, The outer sipes (62) on the outer shoulder rib (6) correspond to the middle sipes (52) on the adjacent rib (51) in one-to-one position, and the inner ends of the outer sipes (62) extend along the extension line of the outer ends of the middle sipes (52); and / or, The inner lateral groove (41) on the inner shoulder rib (4) corresponds to the middle sipe (52) on the adjacent branch rib (51) in one-to-one position, and the outer end of the inner lateral groove (41) is extended along the extension line of the inner end of the middle sipe (52).
4. The tread structure according to claim 1, characterized in that: The surface of the outer shoulder rib (6) is an arc surface, a first guide slope (63) is arranged at the opening of the outer lateral groove (61), the size of the first guide slope (63) gradually increases from the inner end of the outer lateral groove (61) to the outer end of the outer lateral groove (61), the first guide slope (63) is arranged on one side wall of the outer lateral groove (61) or on two oppositely arranged side walls, and / or, The surface of the inner shoulder rib (4) is an arc surface, and a second guide slope (43) is arranged at the opening of the inner lateral groove (41), and the size of the second guide slope (43) gradually increases from the outer end of the inner lateral groove (41) to the inner end of the inner lateral groove (41), and the second guide slope (43) is arranged on a side wall of the inner lateral groove (41) or on two oppositely arranged side walls.
5. The tread structure according to claim 4, characterized in that: The inner lateral groove (41) comprises at least a first groove section (411) and a second groove section (412) which are connected to each other, the first groove section (411) is connected to the first main groove (2), and the second guide slope (43) is arranged on the second groove section (412); The cross-sectional size of the first groove segment (411) is smaller than that of the second groove segment (412), and the extension direction of the first groove segment (411) intersects with the extension direction of the second groove segment (412).
6. The tread structure according to claim 1, characterized in that: The outer sipe (62) comprises at least a first sipe segment (621), a second sipe segment (622) and a third sipe segment (623) which are connected in sequence, the first sipe segment (621) being connected to the first main groove (2), the third sipe segment (623) extending toward the outer side of the tread surface (1), the first sipe segment (621) and the third sipe segment (623) being arranged on both sides of the outer lateral groove (61) and extending in the same direction along the extension direction of the outer lateral groove (61), the extension direction of the second sipe segment (622) intersecting with the extension direction of the outer lateral groove (61) and the second sipe segment (622) being connected to the outer lateral groove (61).
7. The tread structure according to claim 1, characterized in that: A plurality of flow-blocking components (7) are arranged in the first main groove (2) and / or the second main groove (3), and the flow-blocking components (7) are used to reduce the flow of gas in the first main groove (2) or the second main groove (3). The plurality of flow-blocking components (7) are arranged at intervals along the circumference of the tire surface (1).
8. The tread structure according to claim 7, characterized in that: The baffle assembly (7) comprises a first baffle block (71) and a second baffle block (72), wherein the first baffle block (71) and the second baffle block (72) are respectively arranged on opposite groove walls of the first main groove (2) or the second main groove (3), and there is a spacing between the first baffle block (71) and the second baffle block (72) to form an airflow channel (73), and the airflow channel (73) is a straight channel or a curved channel extending circumferentially along the tire surface (1).
9. The tread structure according to claim 1, characterized in that: The pitches between the plurality of middle sipes (52) on each of the branch ribs (51) are unequal; and / or, The pitches between the plurality of outer lateral grooves (61) are not equal; and / or, The pitches between the plurality of inner lateral grooves (41) are not equal; and / or, The slot size of the outer lateral groove (61) is smaller than the slot size of the inner lateral groove (41).
10. A tire, characterized in that: It comprises a tire body and a tread structure according to any one of claims 1 to 9, wherein the tread structure is arranged on the tire body.