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CN116176180B - Asymmetric low noise tire - Google Patents

Asymmetric low noise tire Download PDF

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Publication number
CN116176180B
CN116176180B CN202310313696.2A CN202310313696A CN116176180B CN 116176180 B CN116176180 B CN 116176180B CN 202310313696 A CN202310313696 A CN 202310313696A CN 116176180 B CN116176180 B CN 116176180B
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China
Prior art keywords
cotton
tire
silent
auxiliary
main
Prior art date
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Active
Application number
CN202310313696.2A
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Chinese (zh)
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CN116176180A (en
Inventor
赵帅
苏明
王君
徐伟
卢艳伟
刘俊杰
韩磊
张军华
刘杰
韩奉进
魏颖
张峰
许冰
李大鹏
张琳
郭菲
孙超
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Qingdao Doublestar Tire Industry Co Ltd
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Qingdao Doublestar Tire Industry Co Ltd
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Priority to CN202310313696.2A priority Critical patent/CN116176180B/en
Publication of CN116176180A publication Critical patent/CN116176180A/en
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Publication of CN116176180B publication Critical patent/CN116176180B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00Tyre parts or constructions not otherwise provided for
    • B60C19/002Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86Optimisation of rolling resistance, e.g. weight reduction 

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The invention relates to an asymmetric low-noise tire which comprises a tire body, a main silence cotton and an auxiliary silence cotton, wherein the main silence cotton and the auxiliary silence cotton are adhered to an inner liner of the tire body, the mass of the outer side of a tire tread is larger than that of the inner side of the tire tread, the mass of the main silence cotton at the outer side of the main silence cotton is smaller than that of the main silence cotton at the inner side, the mass of the auxiliary silence cotton at the outer side of the auxiliary silence cotton is smaller than that of the auxiliary silence cotton at the inner side, the mass difference m1 of the outer side and the inner side of the tire tread, the mass difference m2 of the inner side and the outer side of the main silence cotton and the mass difference m3 of the inner side and the outer side of the auxiliary silence cotton meet m2+m3=m1, and the unit is g. The asymmetric low-noise tire can be applied to tires with asymmetric pattern design, so that cavity noise and tread vibration noise of the tire can be reduced, uniformity and dynamic balance performance of the tire can be improved, steering stability and running safety of the tire are improved, and comfortable driving experience is provided.

Description

Asymmetric low-noise tire
Technical Field
The invention belongs to the technical field of tires, and particularly relates to an asymmetric low-noise tire.
Background
In recent years, with the steady increase of the sales volume and market share of electric vehicles, consumers have a higher pursuit of driving environments, wherein low noise and steering stability are one of the concerns of consumers. The mute tire is formed by applying the mute cotton with double-sided adhesive or glue on the middle part of the tread, and the shape, the material and the weight of the mute cotton and the double-sided adhesive or glue are distributed on the center line of the tread in a right-left manner, so that the mute tire has important significance for reducing noise.
However, for the tire with asymmetric pattern design, the weight of the tread part is increased after the silent cotton is attached, the uniformity and dynamic balance performance of the tire are lowered, the noise of the tire is also increased, the driving experience is influenced, and meanwhile, the control stability and the driving safety of the tire are influenced.
Disclosure of Invention
Aiming at the defects existing in the related art, the invention provides the asymmetric low-noise tire which can be applied to the tire with asymmetric pattern design, so that not only can the cavity noise and the tread vibration noise of the tire be reduced, but also the uniformity and dynamic balance performance of the tire can be improved, the control stability and the running safety of the tire can be improved, and the comfortable driving experience can be provided.
The invention provides an asymmetric low-noise tire which comprises a tire body, a main silence cotton and an auxiliary silence cotton, wherein the main silence cotton and the auxiliary silence cotton are adhered to an inner liner of the tire body, the outer mass of a tire tread is larger than the inner mass of the tire tread, the outer mass of the main silence cotton is smaller than the inner mass of the main silence cotton, the outer auxiliary silence cotton is smaller than the inner auxiliary silence cotton, the outer inner mass difference m1 of the tire tread, the inner and outer mass difference m2 of the main silence cotton and the inner and outer mass difference m3 of the auxiliary silence cotton meet m2+m3=m1, and the unit is g.
In some embodiments, the tire tread outer-inner mass difference m1=m1×a, in g, where M1 is tread weight, a is tire tread outer-inner sea Liu Bi difference, the main body silence cotton inner-outer mass difference m2=m2×a, in g, where M2 is the overall weight of the main body silence cotton, and the auxiliary silence cotton inner-outer mass difference m3=m3×a, in g, where M3 is the overall weight of the auxiliary silence cotton.
In some embodiments, the width and depth of the outer main body mute cotton and the inner main body mute cotton are the same, the outer main body mute cotton and the inner main body mute cotton are of n-type structures, the outer main body mute cotton and the inner main body mute cotton form the m-type main body mute cotton, the outer auxiliary mute cotton and the inner auxiliary mute cotton are of semicircular structures, and the semicircular circle centers are positioned at the bottoms of the auxiliary mute cotton and coincide with the central line of the pattern longitudinal groove at the bonding position of the auxiliary mute cotton and the inner liner.
In some of these embodiments, the asymmetric low noise tire further comprises a non-breathable film positioned on a side of the body silence adjacent to the tread.
In some embodiments, the main body mute cotton and the auxiliary mute cotton are attached together, wherein the outer main body mute cotton and the outer auxiliary mute cotton are attached together to form an outer mute cotton, and the inner main body mute cotton and the inner auxiliary mute cotton are attached together to form an inner mute cotton.
In some of these embodiments, the lateral and medial silence cotton are symmetrically distributed about the tread radial centerline.
In some embodiments, the outer and inner silence cotton are multi-segment in the tire circumferential direction.
In some embodiments, the outer silence cotton and the inner silence cotton are of a multi-segment structure in the axial direction of the tire.
In some embodiments, the two ends of the outer silence cotton and the inner silence cotton are staggered in the circumferential direction of the tire.
In some embodiments, the outer silence cotton and the inner silence cotton are layered in the radial direction of the tire.
Based on the technical scheme, compared with the prior art, the asymmetric low-noise tire provided by the embodiment of the invention has the following advantages:
(1) The asymmetric low-noise tire can reduce the noise of a tire cavity and the noise of a tire tread longitudinal groove part, improve the uniformity and dynamic balance performance of the tire, ensure that the mass difference m1 of the outer side and the inner side of the tire tread, the mass difference m2 of the inner side and the outer side of a main mute cotton, the mass difference m3 of the inner side and the outer side of an auxiliary mute cotton meets m2+m3=m1, and make up the mass difference of the inner side and the outer side of the tire tread designed by an asymmetric pattern by utilizing the mass difference of the inner side and the outer side of the asymmetric mute cotton, and improve the uniformity and the dynamic balance value of the tire after pasting the cotton.
(2) The main body mute cotton of the asymmetric low-noise tire comprises the outer main body mute cotton and the inner main body mute cotton which have the same width and thickness, wherein the outer main body mute cotton and the inner main body mute cotton are both of n-shaped design, and the outer main body mute cotton and the inner main body mute cotton form the m-shaped main body mute cotton, so that the weight of the mute cotton can be reduced, and the influence on the uniformity and dynamic balance performance of the tire is reduced.
(3) The outer auxiliary mute cotton and the inner auxiliary mute cotton of the asymmetric low-noise tire are both semicircular, and the semicircular circle center is positioned at the bottom of the auxiliary mute cotton and coincides with the central line of the longitudinal ditch at the bonding position, so that the auxiliary mute cotton is in direct contact with the longitudinal ditch position and completely covers the longitudinal ditch position, and the noise of the longitudinal ditch position is reduced.
(4) According to the asymmetric low-noise tire, the non-breathable film is arranged on one side, close to the tread, of the main body mute cotton, the mute cotton is divided into two mute function areas, the cavity noise of the tire is mainly reduced by the main body mute cotton, and vibration noise of a tread longitudinal groove is mainly reduced by the auxiliary mute cotton.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of an asymmetric low noise tire according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the comparative test results of dynamic balance before and after the low noise tire patch according to the embodiment of the present invention;
FIG. 3 is a schematic diagram showing the RFV comparison test results before and after the low noise tire patch according to the embodiment of the present invention;
FIG. 4 is a schematic diagram of the comparison test results of LFV before and after the low noise tire patch according to the embodiment of the present invention;
FIG. 5 is a schematic diagram showing the comparison test results of the front and rear |CON| of the asymmetric low noise tire patch according to the embodiment of the present invention;
FIG. 6 is a graph showing the results of the cavity noise test before the asymmetrical low noise tire is fitted according to the embodiment of the present invention;
FIG. 7 is a graph showing the results of cavity noise testing after the asymmetrical low noise tire is stuck;
FIG. 8 is a graph showing the result of comparing the noise at the tread parts before and after the low noise tire patch according to the embodiment of the present invention;
FIG. 9 is a schematic view of a second embodiment of an asymmetric low noise tire of the present invention;
FIG. 10 is a schematic view of a third embodiment of an asymmetric low noise tire of the present invention;
FIG. 11 is a schematic view of a fourth embodiment of an asymmetric low noise tire of the present invention;
FIG. 12 is a schematic view of an asymmetric low noise tire of the present invention with both the outer and inner silence in a common one-piece structure;
FIG. 13 is a schematic view of a fifth embodiment of an asymmetric low noise tire of the present invention;
FIG. 14 is a schematic view of an asymmetric low noise tire of the present invention with both the outer and inner silence in the axial direction of the tire in a common one-piece construction;
FIG. 15 is a schematic view of a sixth embodiment of an asymmetric low noise tire of the present invention;
FIG. 16 is a schematic view of a seventh embodiment of an asymmetric low noise tire of the present invention;
FIG. 17 is a schematic view of an eighth embodiment of an asymmetric low noise tire of the present invention;
FIG. 18 is a schematic view of a ninth embodiment of an asymmetric low noise tire of the present invention;
fig. 19 is a schematic view showing the structure of a tenth embodiment of an asymmetric low noise tire according to the present invention.
In the figure, 100 parts of a tire body, 110 parts of a tire, a pattern longitudinal groove, 210 parts of an outer main body silence cotton, 220 parts of an inner main body silence cotton, 310 parts of an outer auxiliary silence cotton, 320 parts of an inner auxiliary silence cotton, 400 parts of a non-breathable film and 500 parts of a semicircular annular cavity structure.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In an exemplary embodiment of the asymmetric low noise tire of the present invention, as shown in fig. 1, the asymmetric low noise tire comprises a tire body 100, a main mute cotton and an auxiliary mute cotton, wherein the main mute cotton and the auxiliary mute cotton are adhered to an inner liner of the tire body 100 by using glue or double faced adhesive tape. The mass of the outer side of the tire tread is larger than the mass of the inner side of the tire tread, the mass of the outer main body silent cotton 210 of the main body silent cotton is smaller than the mass of the inner main body silent cotton 220, the mass of the outer auxiliary silent cotton 310 of the auxiliary silent cotton is smaller than the mass of the inner auxiliary silent cotton 320, and the mass difference m1 of the outer side of the tire tread, the mass difference m2 of the inner side and the mass difference m3 of the outer side of the main body silent cotton and the mass difference m3 of the inner side and the outer side of the auxiliary silent cotton meet m2+m3=m1 in g. The structure utilizes the difference of the inner and outer side quality of the asymmetric silent cotton to make up the difference of the inner and outer side quality of the tread designed by the asymmetric pattern, and improves the uniformity and dynamic balance value of the tire after the cotton is pasted.
The asymmetric low-noise tire has an asymmetric tire tread pattern, wherein the outer sea Liu Bi of the tire tread pattern is larger than the inner sea Liu Bi of the tire tread pattern, the difference a of the outer sea Liu Bi of the tire tread pattern is 2.5% -4.5%, the outer mass of the tire tread is larger than the inner mass of the tire tread, the outer mass difference m1=M1×a of the tire tread pattern is unit g, M1 is the weight of the tire tread, and a is the difference of the outer sea Liu Bi of the tire tread pattern. Preferably, the number of the tread center grooves 110 is 2, the depth of the grooves 110 is 5mm to 10mm, and the width of the grooves 110 is 10mm to 15mm.
The main body mute cotton of the asymmetric low-noise tire is positioned in the middle of the tread, and the radial center line of the main body mute cotton is coincident with the radial center line CL of the tread. The width and thickness of the outer main body silence cotton 210 and the inner main body silence cotton 220 are the same, and the outer main body silence cotton 210 and the inner main body silence cotton 220 are both in an n-type design, and form an m-type main body silence cotton. The mass of the outer body silence cotton 210 is smaller than the mass of the inner body silence cotton 220, and the mass difference between the inner and outer sides of the body silence cotton m2=m2×a, where M2 is the total weight of the body silence cotton and a is the tire tread pattern outer and inner sea Liu Bicha. In the middle of the tread, when the tread contacts with the road surface, the vibration is the largest in the region and the noise is the largest because of the thinnest thickness of the material at the longitudinal groove position, so the main body mute cotton needs to completely cover the region, the noise reduction effect of the region around the longitudinal groove position of the tire can be improved, and therefore, the thicknesses of the outer main body mute cotton 210 and the inner main body mute cotton 220 are 200% -300% of the depth of the longitudinal groove, and the widths are 500% -700% of the width of the longitudinal groove. The lower parts of the outer main body mute cotton 210 and the inner main body mute cotton 220 are designed as cavities, the height of each cavity is 120% -130% of the depth of the corresponding pattern longitudinal groove 110, the height of each cavity is not more than 70% of the thickness of the corresponding main body mute cotton, and the width of each cavity is 80% -90% of the width of the corresponding pattern longitudinal groove 110. The first corner of the outer main body mute cotton 210 near the outer side of the tire and the second corner of the inner main body mute cotton 220 near the inner side of the tire are designed with 90 degrees right angles, obtuse angles, ellipse designs or smooth transition. Preferably, the first edge of the outer main body mute cotton 210 near the outer side of the tire adopts a smooth transition design with the radius of 5mm-10mm, the second edge of the inner main body mute cotton 220 near the inner side of the tire adopts a smooth transition design with the radius of 5mm-10mm, and the radius of the second edge is the same as that of the first edge. The smooth transition design is adopted, so that the weight of the main body mute cotton can be reduced, the influence on the uniformity and dynamic balance performance of the tire is reduced, the area of the corner position is increased, the stress of the area is reduced, and the tear resistance of the part is improved.
The auxiliary mute cotton of the asymmetric low-noise tire is positioned at the longitudinal groove position in the middle of the tire tread and is attached to the inner liner, and the auxiliary mute cotton comprises an outer auxiliary mute cotton 310 and an inner auxiliary mute cotton 320. The outer auxiliary mute cotton 310 and the inner auxiliary mute cotton 320 are both in a semicircular design, and the semicircular center is positioned at the bottom of the auxiliary mute cotton and coincides with the central line of the pattern longitudinal groove 110 at the bonding position, and the radius is 60% -70% of the width of the longitudinal groove. With the above structure, the auxiliary silent cotton can be in direct contact with the position of the pattern groove 110 and completely cover the position of the pattern groove 110, thereby reducing noise at the position of the pattern groove 110. The mass of the outer auxiliary silence cotton 310 is smaller than that of the inner auxiliary silence cotton 320, and the mass difference between the inner side and the outer side of the auxiliary silence cotton is m3=m3×a, wherein M3 is the whole weight of the auxiliary silence cotton, and a is the tire tread pattern outer-inner side sea Liu Bicha.
The specific construction of various embodiments of the asymmetric low noise tire of the present invention will be described with reference to FIGS. 1-18.
Referring to fig. 1, in a first embodiment of an asymmetric low noise tire according to the present invention, the asymmetric low noise tire includes a tire body, a main silent cotton and an auxiliary silent cotton, and further includes a non-breathable film 400, wherein the non-breathable film 400 is located on a side of the main silent cotton near a tread, whereby the non-breathable film 400 divides the silent cotton into two silent function areas, the main silent cotton mainly reduces cavity noise of the tire, and the auxiliary silent cotton mainly reduces vibration noise at a tread longitudinal groove. The semi-circular cavity structure 500 is formed by the non-breathable film 400 and the auxiliary mute cotton positioned below the main mute cotton, so that the vibration noise of the tread can be effectively reduced, because the vibration noise at the tread longitudinal groove position is firstly transmitted to the non-breathable film position after being reduced by the auxiliary mute cotton, and is reflected by the non-breathable film and transmitted to the auxiliary mute cotton position.
Performance tests before and after attaching the silence cotton were performed on the asymmetric low noise tires of example 1, in which fig. 2 is a schematic diagram of dynamic balance comparison test results, fig. 3 is a schematic diagram of RFV comparison test results, fig. 4 is a schematic diagram of LFV comparison test results, and fig. 5 is a schematic diagram of |con| comparison test results. According to the dynamic balance comparison test results of FIG. 2, the dynamic balance data of the tire after the mute cotton is attached is reduced, which indicates that the dynamic balance performance of the tire is improved, according to the RFV comparison test results of FIG. 3, the LFV comparison test results of FIG. 4 and the |CON| comparison test results of FIG. 5, the RFV, LFV and |CON| data of the tire after the mute cotton is attached are reduced, which indicates that the uniformity performance of the tire is improved, according to the cavity noise comparison test frequency spectrum results of FIG. 6 and FIG. 7, the cavity noise of the tire is reduced within the range of 190HZ-250HZ, and according to the tread noise comparison test results of FIG. 8, the noise of the tread longitudinal groove is reduced within the range of 900HZ-2000 HZ.
Referring to fig. 9, a second embodiment of an asymmetric low noise tire according to the present invention is a modification of the first embodiment, in which the non-breathable film 400 and the auxiliary silence cotton located under the main silence cotton no longer form a semi-circular cavity structure, one side of the non-breathable film 400 is attached to the main silence cotton, and the other side is attached to the auxiliary silence cotton. Specifically, the outer main body mute cotton 210 and the outer auxiliary mute cotton 310 are attached together and connected by a non-breathable film 400, and the inner main body mute cotton 220 and the inner auxiliary mute cotton 320 are attached together and connected by the non-breathable film 400.
Referring to fig. 10, a third embodiment of an asymmetric low noise tire according to the present invention is a modification of the second embodiment, in which no non-breathable film structure is provided, and the main silence cotton and the auxiliary silence cotton are directly bonded together, that is, the outer main silence cotton 210 and the outer auxiliary silence cotton 310 are directly bonded together to form an outer silence cotton, and the inner main silence cotton 220 and the inner auxiliary silence cotton 320 are directly bonded together to form an inner silence cotton.
Referring to fig. 11, a fourth embodiment of the asymmetric low noise tire according to the present invention is a modification of the third embodiment, in which the outer and inner silence cotton are symmetrically distributed on the tread radial centerline CL line, and the distance between the outer silence cotton and the inner silence cotton is L1, preferably 1mm to 50mm.
Referring to fig. 13, a fifth embodiment of an asymmetric low noise tire according to the present invention is a modification of the third embodiment, in this embodiment, in the tire circumferential direction, the outer silent cotton and the inner silent cotton are not a common one-stage structure as shown in fig. 12, and the outer silent cotton and the inner silent cotton are both configured to have a multi-stage alignment structure, and the interval between the stages of adjacent outer silent cotton and the interval between the stages of adjacent inner silent cotton are equal, and are both L2, preferably 1mm to 200mm.
Referring to fig. 15, a sixth embodiment of an asymmetric low noise tire according to the present invention is a modification of the third embodiment, in this embodiment, in the tire axial direction, the outer silent cotton and the inner silent cotton are not a conventional one-stage structure as shown in fig. 14, and the outer silent cotton and the inner silent cotton are both configured as a multi-stage structure, and the interval between the segments of adjacent outer silent cotton and the interval between the segments of adjacent inner silent cotton are equal, and are both L3, preferably 1mm to 50mm.
Referring to fig. 16, a seventh embodiment of an asymmetric low noise tire according to the present invention is a modification of the third embodiment, in which the heads and tails of the outer and inner silence cotton are offset in the tire circumferential direction by L4, preferably 1mm to 50mm.
Referring to fig. 17, an eighth embodiment of the asymmetric low noise tire according to the present invention is a modification of the fifth embodiment, in this embodiment, the outer silent cotton and the inner silent cotton are still configured in a multi-stage structure in the tire circumferential direction, but the outer silent cotton and the inner silent cotton are no longer aligned, and the heads and the tails of the outer silent cotton and the inner silent cotton are respectively designed to be staggered, and the staggered intervals are all L4, preferably 1mm to 50mm.
Referring to fig. 18, a ninth embodiment of an asymmetric low noise tire according to the present invention is a further improvement of the third embodiment, in which the outer and inner silence cotton are layered, preferably 1-4 layers in the tire radial direction.
Referring to fig. 19, a tenth embodiment of an asymmetric low noise tire according to the present invention is a further improvement of the eleventh embodiment, in which hollow structures are provided between the layers of the layered structures of the outer and inner silence cotton in the tire radial direction.
Finally, it should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are only required to be mutually referred.
The foregoing embodiments are only for illustrating the technical scheme of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention may be modified or parts of technical features may be equivalently replaced without departing from the spirit of the technical scheme of the present invention, and the scope of the technical scheme of the present invention is covered by the claims.

Claims (10)

1.一种非对称式的低噪音轮胎,其特征在于,包括:轮胎本体,主体静音绵和辅助静音绵,主体静音绵位于胎面中部,且主体静音绵的径向中线与胎面径向中线重合,且主体静音绵和辅助静音绵均与轮胎本体的内衬层相粘合,其中,外侧主体静音绵和内侧主体静音绵均呈“n”型结构,两者组成呈“m”型的主体静音绵;外侧辅助静音绵和内侧辅助静音绵均为半圆形结构,且半圆形的圆心位于辅助静音绵底部且与辅助静音绵和内衬层粘合位置的花纹纵沟中线重合;轮胎胎面外侧质量大于胎面内侧质量;主体静音绵的外侧主体静音绵的质量小于内侧主体静音绵的质量;辅助静音绵的外侧辅助静音绵的质量小于内侧辅助静音绵的质量;轮胎胎面外内侧质量差m1、主体静音绵内外侧质量差m2、辅助静音绵内外侧质量差m3满足m2+m3=m1,单位为g。1. An asymmetric low-noise tire, characterized in that it includes: a tire body, a main silent cotton and an auxiliary silent cotton, the main silent cotton is located in the middle of the tread, and the radial center line of the main silent cotton coincides with the radial center line of the tread, and the main silent cotton and the auxiliary silent cotton are both bonded to the inner liner of the tire body, wherein the outer main silent cotton and the inner main silent cotton are both in an "n"-shaped structure, and the two form an "m"-shaped main silent cotton; the outer auxiliary silent cotton and the inner auxiliary silent cotton are both in a semicircular structure, and the semicircular The center of the circle is located at the bottom of the auxiliary sound-proof cotton and coincides with the center line of the longitudinal groove of the pattern where the auxiliary sound-proof cotton and the inner liner are bonded; the mass of the outer side of the tire tread is greater than the mass of the inner side of the tread; the mass of the outer side of the main sound-proof cotton is less than the mass of the inner side of the main sound-proof cotton; the mass of the outer side of the auxiliary sound-proof cotton is less than the mass of the inner side of the auxiliary sound-proof cotton; the mass difference m1 between the outer and inner sides of the tire tread, m2 between the inner and outer sides of the main sound-proof cotton, and m3 between the inner and outer sides of the auxiliary sound-proof cotton satisfy m2+m3=m1, and the unit is g. 2.根据权利要求1所述的非对称式的低噪音轮胎,其特征在于,轮胎胎面外内侧质量差m1=M1×a,单位为g,其中,M1为胎面重量,a为轮胎胎面花纹外内侧海陆比差;主体静音绵内外侧质量差m2=M2×a,单位为g,其中,M2为主体静音绵的整体重量;辅助静音绵内外侧质量差m3=M3×a,单位为g,其中,M3为辅助静音绵的整体重量。2. The asymmetric low-noise tire according to claim 1 is characterized in that the mass difference between the inner and outer sides of the tire tread is m1=M1×a, in g, where M1 is the tread weight and a is the sea-to-land ratio difference between the inner and outer sides of the tire tread pattern; the mass difference between the inner and outer sides of the main sound-absorbing cotton is m2=M2×a, in g, where M2 is the overall weight of the main sound-absorbing cotton; the mass difference between the inner and outer sides of the auxiliary sound-absorbing cotton is m3=M3×a, in g, where M3 is the overall weight of the auxiliary sound-absorbing cotton. 3.根据权利要求1所述的非对称式的低噪音轮胎,其特征在于,外侧主体静音绵和内侧主体静音绵的宽度和深度均相同。3. The asymmetric low-noise tire according to claim 1 is characterized in that the width and depth of the outer body silent cotton and the inner body silent cotton are the same. 4.根据权利要求1所述的非对称式的低噪音轮胎,其特征在于,非对称式的低噪音轮胎还包括非透气薄膜,非透气薄膜位于主体静音绵靠近胎面的一侧。4. The asymmetric low-noise tire according to claim 1 is characterized in that the asymmetric low-noise tire also includes a non-air-permeable film, and the non-air-permeable film is located on a side of the main silent foam close to the tread. 5.根据权利要求1或4所述的非对称式的低噪音轮胎,其特征在于,主体静音绵与辅助静音绵贴合在一起,其中,外侧主体静音绵和外侧辅助静音绵贴合在一起形成外侧静音绵,内侧主体静音绵和内侧辅助静音绵贴合在一起形成内侧静音绵。5. The asymmetric low-noise tire according to claim 1 or 4 is characterized in that the main body sound-proofing cotton and the auxiliary sound-proofing cotton are bonded together, wherein the outer main body sound-proofing cotton and the outer auxiliary sound-proofing cotton are bonded together to form the outer side sound-proofing cotton, and the inner main body sound-proofing cotton and the inner auxiliary sound-proofing cotton are bonded together to form the inner side sound-proofing cotton. 6.根据权利要求5所述的非对称式的低噪音轮胎,其特征在于,外侧静音绵和内侧静音绵在胎面径向中线呈左右对称分布。6. The asymmetric low-noise tire according to claim 5 is characterized in that the outer noise-reducing sponge and the inner noise-reducing sponge are symmetrically distributed on the radial center line of the tread. 7.根据权利要求5所述的非对称式的低噪音轮胎,其特征在于,在轮胎周向,外侧静音绵与内侧静音绵均为多段式结构。7. The asymmetric low-noise tire according to claim 5 is characterized in that, in the circumferential direction of the tire, both the outer side silent cotton and the inner side silent cotton are multi-stage structures. 8.根据权利要求5所述的非对称式的低噪音轮胎,其特征在于,在轮胎轴向,外侧静音绵与内侧静音绵均为多段式结构。8. The asymmetric low-noise tire according to claim 5 is characterized in that, in the axial direction of the tire, the outer silent cotton and the inner silent cotton are both multi-stage structures. 9.根据权利要求5所述的非对称式的低噪音轮胎,其特征在于,在轮胎周向,外侧静音绵与内侧静音绵的两端均为错开设置。9. The asymmetric low-noise tire according to claim 5 is characterized in that, in the circumferential direction of the tire, both ends of the outer silent cotton and the inner silent cotton are staggered. 10.根据权利要求5所述的非对称式的低噪音轮胎,其特征在于,在轮胎径向,外侧静音绵和内侧静音绵均为分层式结构。10. The asymmetric low-noise tire according to claim 5, characterized in that in the radial direction of the tire, the outer side silent cotton and the inner side silent cotton are both layered structures.
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