CN111703258A - Tread structure and tire - Google Patents

Abstract

The application discloses a tread structure and a tire, wherein the tread structure is sequentially provided with an outer tire shoulder rib, a central rib and an inner tire shoulder rib which are separated by a longitudinal main groove from the outer side to the inner side; the outer tire shoulder rib is provided with a plurality of first transverse grooves which are arranged in the circumferential axial direction and have unequal pitches; the inner tire shoulder rib is provided with a plurality of second transverse grooves which are arranged in the circumferential axial direction and have unequal pitches; the first transverse groove penetrates through the longitudinal main groove; the second transverse groove axially penetrates through the inner shoulder rib; the pitch of the first transverse groove is larger than that of the second transverse groove; the groove width of the first transverse groove is smaller than that of the second transverse groove; the central rib is provided with a plurality of first knife grooves with unequal intervals; the first cutter flutes are axially obliquely arranged with at least one end penetrating through the adjacent longitudinal main grooves. The tread structure makes the tire both have stable performance, the braking performance of controlling, guarantees again noise and takes comfortable performance, reaches the optimization and the balance of tread structural performance.

Description

Tread structure and tire

Technical Field

The application relates to the technical field of vehicle tread structures, in particular to a tread structure and a tire.

Background

The abrasion performance and the bearing performance of the tire are the focus of the market attention during the running of the vehicle. With the continuous development of the global automobile industry technology and the continuous improvement of the automobile concept by people, higher and higher requirements are put forward on tires for providing bearing capacity and transmitting driving force, particularly, the continuous expansion of new energy automobiles leads to the increasing attention on the noise, riding comfort, dry and wet land safety and rolling resistance performance of the tires.

Generally, the structural pattern of the car tread has the components of a big block pattern and a small block pattern, a symmetrical pattern, an asymmetrical pattern and a guide pattern according to different use requirements. How to improve the dry/wet control performance and the braking performance of the tire and ensure the riding comfort performance of the vehicle to the maximum extent so as to achieve the balance of the performance and design the optimal tire tread structure product is always the key consideration of tire tread pattern designers.

Disclosure of Invention

In view of this, an object of the present application is to provide a tread structure and a tire, such that the tire has stable dry/wet handling performance and braking performance, and ensures noise and riding comfort performance, thereby achieving optimization and balance of the tread structure performance.

In order to achieve the technical purpose, the application provides a tread structure, wherein outer shoulder ribs, central ribs and inner shoulder ribs which are separated by longitudinal main grooves are sequentially arranged from an outer shoulder contour line to an inner shoulder contour line;

the outer tire shoulder rib is provided with a plurality of first transverse grooves distributed around the circumference of the tire surface;

the inner tire shoulder rib is provided with a plurality of second transverse grooves distributed around the circumference of the tire surface;

the first transverse grooves are sequentially distributed at intervals according to a plurality of first pitches and penetrate through the adjacent longitudinal main grooves;

the second transverse grooves are sequentially distributed at intervals according to a plurality of second pitches, and both ends of each second transverse groove penetrate through the inner tire shoulder ribs;

the groove width of the first transverse groove is smaller than that of the second transverse groove;

the central rib is provided with a plurality of first knife grooves which are distributed around the circumference of the tread and have unequal intervals;

the first cutter flutes are axially obliquely arranged, and at least one end of each first cutter flute penetrates through the adjacent longitudinal main groove.

Preferably, the first pitches are 3-5;

the second pitches are 3-5;

there are a plurality of each of the first pitches and a plurality of each of the second pitches.

Preferably, the number of the first pitches is equal to that of the second pitches, and the first pitches correspond to the second pitches one by one;

any one first pitch is larger than or equal to a corresponding second pitch.

Preferably, the number of the central ribs is 2-5.

Preferably, the number of the central ribs is 3, and a first central rib, a second central rib and a third central rib which are separated by the longitudinal main groove are sequentially and respectively formed along the outer shoulder rib to the inner shoulder rib.

Preferably, the first blade flutes on the first central rib extend axially through the first central rib;

wedge angle gaps are formed in one ends, close to the outer shoulder ribs, of the first knife grooves on the second central rib and the first knife grooves on the third central rib;

the first knife groove on the third center rib axially penetrates through the third center rib, and a cutting edge is arranged at one end edge close to the inner shoulder rib.

Preferably, the first transverse grooves are provided with second knife grooves in pairs;

one end of each of two ends of the second knife slot is communicated with the adjacent main groove, and a wedge angle notch is formed in the end;

the other end of the second sipe penetrates through the outer tire shoulder rib and is communicated with the outer side of the tire.

Preferably, the depth of the middle part of the first knife groove is greater than that of the two ends of the first knife groove, and a steel sheet is embedded in the first knife groove.

Preferably, the longitudinal main grooves have chamfered groove walls.

Preferably, the groove width of the longitudinal main groove adjacent to the outer shoulder rib is smaller than the groove width of the longitudinal main groove adjacent to the inner shoulder rib.

Preferably, the groove edges of the first transverse groove and the second transverse groove are arcs formed by multiple arcs;

the edges of the first transverse groove and the second transverse groove are provided with cut edges;

and a trimming edge is arranged at one end edge of the second transverse groove, which is communicated with the adjacent longitudinal main groove.

The present application also provides a tire having a tread provided with the tread structure of any of the above.

According to the technical scheme, the tread structure comprising the outer shoulder ribs, the central ribs and the inner shoulder ribs is provided with the first transverse grooves, the first knife grooves and the second transverse grooves which are not equal in pitch, so that the rigidity of the tread can be effectively reduced, the drainage performance of the wetland is enhanced, the safety of the wetland is improved, the problem of easy loud-sound resonance caused by equidistant arrangement is avoided, and the purpose of reducing noise is achieved; the first transverse groove penetrates through the main groove, and the second transverse groove penetrates through the whole inner tire shoulder rib, so that the drainage performance of the tire is improved, and the rigidity is reduced; meanwhile, as the first sipe is used as a dividing line of the central pattern rib, other sipe divisions are not arranged among the pitches, and when the tire is started, braked and turned, compared with the traditional pattern design with the sipe divisions, the rigidity of the pattern block with each pitch is stronger, the excessive deformation of the tire tread structure when contacting with the ground is reduced, and the performances of control, abrasion, rolling resistance and the like of the tire tread structure can be effectively kept while the riding comfort is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic view of a tread configuration of asymmetric tread configuration of the type provided herein;

in the figure: 11. a first central rib; 12. a second central rib; 13. a third central rib; 2. an outer shoulder rib; 21. a first lateral trench; 22. a second flute; 3. an inner shoulder rib; 31. a second lateral trench; 4. a longitudinal main groove; 5. a first knife flute; 6. a wedge angle notch; 7. and (6) trimming.

Detailed Description

The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

The embodiment of the application discloses a tread structure.

Referring to fig. 1, the present application provides an embodiment: a tread structure, the tread structure arranges the outer tire shoulder rib 2, central rib and inner tire shoulder rib 3 separated by the longitudinal main groove 4 from the outer tire shoulder contour line to the inner tire shoulder contour line sequentially; the outer tire shoulder rib 2 is provided with a plurality of first transverse grooves 21 distributed around the circumference of the tire tread; the inner shoulder ribs 3 are provided with a plurality of second transverse grooves 31 distributed around the circumference of the tread; the first transverse grooves 21 are sequentially distributed at intervals according to a plurality of first pitches and penetrate through the adjacent longitudinal main grooves 4, so that the drainage performance of the tire is enhanced; the second transverse grooves 31 are sequentially distributed at intervals according to a plurality of second pitches, and both ends of each second transverse groove penetrate through the inner tire shoulder rib, namely one end of each second transverse groove penetrates through the adjacent longitudinal main groove 4, and the other end of each second transverse groove penetrates through the outer portion of the tire tread; while the width of the first transverse groove 21 is smaller than the width of the second transverse groove 31; the central rib is provided with a plurality of first knife grooves 5 which are distributed around the circumference of the tread and have unequal intervals; the first cutter groove grains 5 are axially and obliquely arranged, and at least one end of each first cutter groove grain penetrates through the adjacent longitudinal main grooves 4; the axial inclination arrangement is that the tire rotation axis is used as a reference line to incline left and right.

The unequal distance arrangement of the first transverse groove 21, the second transverse groove 31 and the first knife groove strip 5 avoids the resonance noise of the tire; meanwhile, the first sipe strip 5 penetrates the longitudinal main groove 4 to further improve the drainage performance of the tire, and specifically, both sides of the sipe strip may penetrate the longitudinal main groove 4, or only one side of the sipe strip may penetrate.

The above is a first embodiment of a tread structure provided in the embodiments of the present application, and the following is a second embodiment of a tread structure provided in the embodiments of the present application, specifically referring to fig. 1:

a tread structure, the tread structure is arranged from the outline of the outer tire shoulder to the outline of the inner tire shoulder sequentially and separated by a longitudinal main groove 4, an outer tire shoulder rib 2, a central rib and an inner tire shoulder rib 3; the outer tire shoulder rib 2 is provided with a plurality of first transverse grooves 21 distributed around the circumference of the tire tread; the inner shoulder ribs 3 are provided with a plurality of second transverse grooves 31 distributed around the circumference of the tread; the first transverse grooves 21 are sequentially distributed at intervals according to a plurality of first pitches and penetrate through the adjacent longitudinal main grooves 4, so that the drainage performance of the tire is enhanced; the second transverse grooves 31 are sequentially distributed at intervals according to a plurality of second pitches, and both ends of each second transverse groove penetrate through the inner tire shoulder rib, namely one end of each second transverse groove penetrates through the adjacent longitudinal main groove 4, and the other end of each second transverse groove penetrates through the outer portion of the tire tread; while the width of the first transverse groove 21 is smaller than the width of the second transverse groove 31; the central rib is provided with a plurality of first knife grooves 5 which are distributed around the circumference of the tread and have unequal intervals; the first cutter groove grains 5 are axially and obliquely arranged, and at least one end of each first cutter groove grain penetrates through the adjacent longitudinal main grooves 4; the axial inclination arrangement is that the tire rotation axis is used as a reference line to incline left and right.

Further, the first pitch is 3-5, and the second pitch is 3-5; a plurality of first pitches and a plurality of second pitches are provided; namely, a plurality of outer shoulder ribs 2 are arranged on each first pitch; a plurality of second pitches are provided on the inner shoulder rib 3.

Furthermore, the number of the first pitches is equal to that of the second pitches, and the first pitches correspond to the second pitches one by one; any one of the first pitches is greater than a corresponding one of the second pitches.

Particularly, the existence of multiple pitches optimizes the noise of the tire in the running process and effectively avoids the resonance problem; conventionally arranged in 3-5 pitches, each width pitch comprising a plurality of numbers; in this embodiment, the number of the first pitches is equal to that of the second pitches, and corresponds to each other.

Taking 3 types of the first pitches and the second pitches as an example, the widths of the three first pitches are respectively W1, W2 and W3, and the widths of the corresponding three second pitches are respectively N1, N2 and N3, wherein W1 is greater than N1, W2 is greater than N2, and W3 is greater than N3, so that the outer shoulder rib 2 has a larger grounding area and better operability compared with the inner shoulder rib 1.

Further, the depths of different positions of each first knife groove grain 5 are not equal, and the depths of two ends of the first knife groove grain 5 are smaller than the depth of the middle of the first knife groove grain 5.

Furthermore, the number of the central ribs is 2-5, and the number of the corresponding longitudinal main grooves 4 is 3-6.

Specifically, the unequal spacing arrangement of the plurality of central ribs is similar to the first pitch and the second pitch, and a plurality of spacings are protected, specifically such that the spacing of the central ribs near the inner side is smaller than the corresponding spacing of the central ribs near the outer side.

Further, in this embodiment, the number of the center ribs is 3, and the first center rib 11, the second center rib 12, and the third center rib 13 are respectively arranged along the outer shoulder rib 2 toward the inner shoulder rib.

Further, the first lug groove 5 is inclined upward from the upper side to the lower side at the end near the inner shoulder rib 3 and downward from the upper side to the lower side at the end near the outer shoulder rib 2.

Furthermore, the first knife groove grains 5 on the first central rib 11 axially penetrate through the first central rib 11, both sides of the first knife groove grains are communicated with the longitudinal main groove 4, and the groove edges are provided with cut edges 7;

one end of the first knife groove grain 7 on the second central rib 12, which is close to the outer shoulder rib 2, is provided with a wedge angle notch 6, and the edge of the groove grain is provided with a cutting edge 7;

the first blade groove line 7 on the third central rib 13 axially penetrates through the third central rib 13, a wedge angle notch 6 is arranged at one end close to the outer tire shoulder rib 2, and a cutting edge 7 is arranged at one end edge close to the inner tire shoulder rib 3.

The arrangement of the cut edges 7 on the first knife groove lines 5 enhances the drainage of the wetland; simultaneously, the wedge angle notch is more favorable for the tire to puncture a water film, prevents the end part from earlier stage abrasion and optimizes noise.

In the present embodiment, the inclination angle of the first blade groove pattern 5 on the first center rib 11 is smaller than that on the other ribs, so that no wedge angle gap is provided; specifically, in other embodiments, other arrangements of the first blade grooves 5 disposed on different central ribs may be performed according to different road conditions of different vehicles, for example, wedge-angle notches are disposed at both left and right ends of the first blade groove 5 on the central rib.

Further, second knife groove grains 22 are arranged between every two first transverse grooves 21, one end of each second knife groove grain 22 penetrates through the longitudinal main groove 4, and a wedge angle notch 6 is formed in the end; the other end is connected to the outside of the outer shoulder rib 2 in a penetrating way;

the second knife groove is a slender pattern, so that the rigidity of the outer tire shoulder rib 2 is effectively reduced, the turning control performance is improved, and the second knife groove can be mutually supported when the tire tread is deformed, so that the excessive deformation is reduced.

Furthermore, the first knife groove line 5 is internally embedded with a thin steel sheet, so that the rigidity of the central rib is reduced within a certain range, and the riding comfort is improved.

Further, the inner groove wall of the longitudinal main groove 4 has a certain inclined angle;

particularly, the inclination angle of the groove wall is variable between 8 and 15 degrees, the self-cleaning capability of the tire is improved, and the wet land anti-skid performance, the turning stability and the accurate steering response are provided.

Further, the groove width of the longitudinal main groove 4 on the outer side of the tire is smaller than that of the inner main groove 4, so that the grounding area of the outer tire shoulder rib 2 is effectively increased, and the steering control stability of the tire is facilitated.

Further, the groove edges of the first transverse groove 21 and the second transverse groove 31 are all designed to be in multi-section arc eccentric wear prevention, the groove edges are provided with the cut edges 7, and meanwhile, the cut edges 7 are arranged at one end, communicated with the longitudinal main groove 4, of the second transverse groove 31, so that the drainage performance is further enhanced, the abnormal wear condition of the tire in the early stage of use is reduced, and the attractiveness is improved.

The above is the second embodiment of the tread structure provided in the embodiments of the present application, and the present application also provides the third embodiment: a tire comprising the tread structure of any of the above embodiments.

Further, the first transverse groove 21 and the second transverse groove 31 are arranged in different pitches and different widths; the pitch width of the first transverse grooves 21 can be set to be 25-60 mm, and the number of the first transverse grooves is 45-65; the pitch width of the second transverse grooves 31 can be set to be 20-45 mm, the number of the second transverse grooves is 65-85, and specifically, the pitch width of the first transverse grooves 21 is constantly larger than that of the second transverse grooves 31.

Further, the width of each first knife flute 5 is less than 8 mm; the width of the longitudinal main groove 4 can be 8 mm-16 mm.

Furthermore, the ratio of the width of the central rib to the width of the whole tread is 0.45-0.6; the width of the inner shoulder rib 31 accounts for the whole tread width and is 0.18-0.25, and the width of the outer shoulder rib 21 is larger than that of the inner shoulder rib 31 by adjusting the groove width of the longitudinal main groove 4.

The tread of the whole tire adopts an asymmetric design, and the groove edge lines of the first transverse groove 21 and the second transverse groove 31 adopt an anti-eccentric wear design of a multi-section arc, so that the shape and the grounding stress distribution of a grounding impression of a tire shoulder part of the tire are optimized, the early wear of the tire shoulder part is prevented, and the control stability of the tire is enhanced.

While the present application has been described with reference to the particular embodiments and applications of the present application, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present application.

Claims (10)

1. The tire tread structure is characterized in that an outer tire shoulder rib, a central rib and an inner tire shoulder rib which are separated by a longitudinal main groove are sequentially arranged on the tire tread structure from an outer tire shoulder contour line to an inner tire shoulder contour line;

the outer tire shoulder rib is provided with a plurality of first transverse grooves distributed around the circumference of the tire tread;

the inner shoulder ribs are provided with a plurality of second transverse grooves distributed around the circumference of the tire tread;

the first transverse grooves are sequentially distributed at intervals according to a plurality of first pitches and penetrate through the adjacent longitudinal main grooves;

the second transverse grooves are sequentially distributed at intervals according to a plurality of second pitches, and both ends of each second transverse groove penetrate through the inner tire shoulder ribs;

the groove width of the first transverse groove is smaller than that of the second transverse groove;

the central rib is provided with a plurality of first knife grooves which are distributed around the circumference of the tread and have unequal intervals;

the first cutter flutes are axially obliquely arranged, and at least one end of each first cutter flute penetrates through the adjacent longitudinal main groove.

2. A tread structure according to claim 1, wherein said first pitches are 3-5;

the second pitches are 3-5;

there are a plurality of each of the first pitches and a plurality of each of the second pitches.

3. A tread structure according to claim 2, wherein said first number of pitches is equal to said second number of pitches, in a one-to-one correspondence;

any one of the first pitches is greater than a corresponding one of the second pitches.

4. A tread structure according to claim 1, wherein the number of said central ribs is 2-5.

5. The tread structure according to claim 4, wherein said central ribs are 3, and are respectively formed in sequence from said outer shoulder rib to said inner shoulder rib, a first central rib, a second central rib and a third central rib separated by said longitudinal main groove;

the first knife groove line on the first central rib axially penetrates through the first central rib, and the groove edges on the two sides are provided with cut edges;

one end, close to the outer shoulder rib, of the first cutter groove line on the second central rib is provided with a wedge angle notch, and the edges of the grooves on the two sides are provided with cut edges;

the first cutter groove grooves on the third center rib axially penetrate through the third center rib, a wedge angle notch is also formed in one end, close to the outer tire shoulder rib, of the third center rib, and a cutting edge is also formed in one end edge, close to the inner tire shoulder rib, of the third center rib.

6. A tread structure according to claim 1, wherein said first transverse grooves are provided with second sipes between each two of them;

one end of each of two ends of the second knife slot is communicated with the adjacent main groove, and a wedge angle notch is formed in the end;

the other end of the second sipe penetrates through the outer tire shoulder rib and is communicated with the outer side of the tire.

7. The tread structure of claim 1, wherein the depth of the middle portion of the first blade groove is greater than the depths of the two ends, and steel sheets are embedded in the middle portion of the first blade groove.

8. A tread structure according to claim 1, wherein said longitudinal main grooves have chamfered groove walls;

the groove width of the longitudinal main groove adjacent to the outer tire shoulder rib is smaller than that of the longitudinal main groove adjacent to the inner tire shoulder rib.

9. The tread structure of claim 4, wherein the grooves of the first and second lateral grooves are arcs of a plurality of arcs along the side lines;

the groove edges of the first transverse groove and the second transverse groove are also provided with cut edges;

and a cut edge is also arranged at one end edge of the second transverse groove, which is communicated with the adjacent longitudinal main groove.

10. A tyre, characterized in that the tread of the tyre is provided with a tread structure according to any one of claims 1 to 9.

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