WO2014047966A1 - 一种用于摩托车越野赛的充气轮胎 - Google Patents

一种用于摩托车越野赛的充气轮胎 Download PDF

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Publication number
WO2014047966A1
WO2014047966A1 PCT/CN2012/082689 CN2012082689W WO2014047966A1 WO 2014047966 A1 WO2014047966 A1 WO 2014047966A1 CN 2012082689 W CN2012082689 W CN 2012082689W WO 2014047966 A1 WO2014047966 A1 WO 2014047966A1
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Prior art keywords
block
crown
blocks
tread
shoulder
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PCT/CN2012/082689
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English (en)
French (fr)
Inventor
陈秀雄
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厦门正新橡胶工业有限公司
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Priority to US14/361,898 priority Critical patent/US20140318675A1/en
Publication of WO2014047966A1 publication Critical patent/WO2014047966A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/11—Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0327—Tread patterns characterised by special properties of the tread pattern
    • B60C11/033—Tread patterns characterised by special properties of the tread pattern by the void or net-to-gross ratios of the patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/032—Patterns comprising isolated recesses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0339—Grooves
    • B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
    • B60C2011/036—Narrow grooves, i.e. having a width of less than 3 mm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0339—Grooves
    • B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
    • B60C2011/0362—Shallow grooves, i.e. having a depth of less than 50% of other grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/10—Tyres specially adapted for particular applications for motorcycles, scooters or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/14—Tyres specially adapted for particular applications for off-road use

Definitions

  • the invention relates to a pneumatic tire for motocross.
  • the motocross pneumatic tire tread pattern is generally composed of regular blocks. In order to ensure its driving force and soil discharge on uneven roads, each block is arranged at intervals, and the tires of the off-road vehicle used in hard terrain are used. (Fig. 1), in order to improve the linear traction performance and cornering performance on hard terrain, the total land ratio (the ratio of the total surface area of all the blocks of the corresponding tread to the total tread area) is higher overall, tread The pattern land ratio is generally set to the land ratio of the intermediate area B > the land ratio of the crown area A > the shoulder ratio of the shoulder area C (corresponding to the ratio of the total surface area of the block to the total area of the area), the block is generally Set the same height, for the tires of the off-road vehicle race used on the soft terrain road (Figure 2), in order to make the blocks easy to fall into the soil, provide high driving force and cornering performance, the overall pattern of the pattern is lower than the overall setting, the blocks The land ratio is generally set to the land ratio of the crown region A to the land ratio of the intermediate region B
  • the existing pattern is only suitable for a single terrain, and it is impossible to balance the traction and the high straight traction in the medium-hard terrain road racing and jumping. Bend performance.
  • the present invention proposes a pneumatic tire for motocross, and the technical solution thereof is as follows:
  • a pneumatic tire for motocross comprising a crown region, a middle region and a shoulder region on a tread, and corresponding crown blocks, intermediate blocks and shoulder patterns of each region on the tread a block, in a pattern period on the tread, the crown block comprises a large crown block and a small crown block, the number being the same, and spaced apart from each other; the intermediate block is symmetrically distributed on the On both sides of the crown block, each side is staggered in the longitudinal direction with respect to the crown block, and the intermediate blocks are staggered in a lateral direction with a staggered lateral distance; the shoulder blocks are symmetrically distributed.
  • the number of one sides is more than the number of the intermediate blocks and the number of the crown blocks on one side;
  • the land ratio of the intermediate portion is smaller than that of the crown regions a land ratio of the land ratio and the shoulder region;
  • the height of the shoulder block is higher than the height of the crown block and the intermediate block.
  • the crown large block length is 1/4-1/3 of the total tread width
  • the length of the crown small block is the crown large block length 2/3-3/4.
  • the intermediate blocks are staggered between 1/3 and 2/3 of the length of the intermediate block.
  • the land ratio of the crown region is set to 20%-25%; the land ratio of the intermediate region is set to 15%-20%; and the land ratio of the shoulder region is set to 25%. -30%.
  • the height of the crown block, the intermediate block and the shoulder block ranges from 10 to 25 mm; the height difference between the shoulder block and the crown block and the intermediate block The range is 1-4mm.
  • the top surface of the crown block and the intermediate block has shallow grooves and/or fine grooves; the number of the crown blocks and the intermediate blocks in each of the pattern periods is 2-8 One.
  • the side surface of the intermediate block has an irregular surface
  • the irregular surface faces a lateral outer side of the tread
  • adjacent ones of the intermediate blocks have an irregular surface along the The treads are longitudinally opposite each other.
  • the crown small block and the intermediate block have reinforcing ribs, and the reinforcing ribs are symmetrically disposed in the longitudinal direction of the tread and have a tilt angle with respect to the traveling direction of the tire.
  • the thickness of the rib is 2-9mm.
  • the shallow grooves and slots have a depth of 2-9 mm and a width of 2-5 mm.
  • the crown large block may be a large crown block of a single shape structure in the same pattern period, and may include a large crown block having a slightly different shape structure.
  • the treads are arranged in various areas and the land ratio is reasonable.
  • the middle blocks are less in contact with the ground, and the crown blocks and shoulder blocks are large enough to ensure straight-line driving stability while driving in a straight line. When driving in a corner, you can quickly remove the dirt, improve the driving force, and effectively bend.
  • the irregular faces of the adjacent intermediate blocks are disposed opposite to each other in the longitudinal direction of the tread, so that the driving force when the straight line is converted into the over-bent state and the ability to displace the dirt can be improved, so that the motorcycle can effectively bend.
  • Figure 1 is a plan view showing a conventional tire tread 1 for motocross;
  • FIG. 2 is a plan view showing a conventional tire tread 1 for use in a motocross race
  • Figure 3 is a plan view showing a tread 1 according to an embodiment of the present invention.
  • Figure 4 is a schematic cross-sectional view showing a section AA' of the crown block 11 of the embodiment shown in Figure 3;
  • Figure 5 is a schematic cross-sectional view showing another section BB' of the crown block 11 of the embodiment shown in Figure 3;
  • Figure 6 is a schematic cross-sectional view showing a section CC' of the intermediate block 20 of the embodiment shown in Figure 3;
  • Figure 7 is a schematic cross-sectional view showing a section DD' of the rib 40 of the embodiment shown in Figure 3.
  • a pneumatic tire for motocross comprising a crown region A, a middle region B and a shoulder region C on the tread 1, and the widths TWa, TWb, TWc corresponding to the respective regions are respectively set as the total tread width TW 1/3, and the crown block 10, the intermediate block 20, and the shoulder block 30 corresponding to each region on the tread 1;
  • the shoulder block 30 includes: a block 31, a block 32, a block 33, and In the block 34, the land ratio of the intermediate portion B is smaller than the land ratio of the crown region A, and is also smaller than the land ratio of the shoulder region C.
  • the land ratio of the intermediate portion B is 15%-20%
  • the crown region is The land ratio of A is 20% to 25%
  • the land ratio of the shoulder region C is 25% to 30%
  • the height of the shoulder block 30 is higher than the height of the crown block 10 and the intermediate block 20,
  • the height of the crown block, the intermediate block and the shoulder block ranges from 10 to 25 mm; the height difference between the shoulder block and the crown block and the intermediate block ranges from 1 to 4 mm.
  • the tread 1 is actually divided into a plurality of identical pattern periods (1) Pitch), the shape and distribution of the blocks on each pattern cycle are the same, and are repeated throughout the tread.
  • Figure 3 is a fragment of one full pattern cycle of the tread 1.
  • the crown block 10 includes: a large crown block 11 and a small crown block 12, the same number and spaced apart from each other, and the number of the crown blocks 10 in the pattern period is 2-8; the crown The length L1 of the large block 11 is 1/4-1/3 of the total tread width TW, and the length L2 of the small tread block 12 is 2/3 - 3/4 of the length L1 of the large crown block 11.
  • the large and small blocks of this form have relatively irregular widths, so that they have good grip ability, and in actual design, the respective ends of the large crown block 11 and the small crown block 12 can be processed to be very non-
  • the shape of the rule increases its edge effect to improve traction.
  • the crown large block may be a large-sized crown block 11 of a single-shape structure, and may include a crown large block 11 and a crown large block 11' having slightly different shape structures.
  • the crown block 11 is provided with two lateral narrow grooves 13 (see FIG. 4); the large crown block 11' is provided with a thin groove 14 on the left and right sides, and a groove 15 is formed in the middle portion (see FIG. 5).
  • the intermediate blocks 20 are symmetrically distributed on both sides of the crown block 10, that is, in the intermediate portion B, and each side intermediate block 20 is staggered in the longitudinal direction relative to the crown block 10. And, between the intermediate blocks 20, staggered in the lateral direction by a staggered lateral distance d; the staggered lateral distance is 1/3-2/3 of the length of the intermediate block 20, and the intermediate block 20 on each side
  • the number is 2-8 in one pattern period, so that the intermediate blocks 20 are arranged in a zigzag pattern in the longitudinal direction of the tread 1, the intermediate blocks of this shape have a good cornering grip ability, and they are combined with the crown block 10 Interlaced settings allow for the best soil properties.
  • the side of the intermediate block 20 has an irregular face 22 which faces the lateral outer side of the tread 1 and the irregular faces of the adjacent intermediate blocks 20 are arranged opposite each other in the longitudinal direction of the tread 1 This can improve the driving force and the ability to displace the soil when the straight line is turned into a cornering state, and the stability of the tire, so that the motorcycle can effectively bend.
  • the shoulder blocks 30 are symmetrically distributed on both sides of the two intermediate blocks 20, that is, the shoulder portions C, which are more than one side than the one side of the intermediate block 10 and the crown block 20
  • the quantity is arranged unequally along the longitudinal direction of the tread 1, so that the shoulder portion C still has good anti-slip and driving performance when it is bent to the maximum extent.
  • a reinforcing rib 40 which is symmetrically disposed in the longitudinal direction of the tread 1 and has an inclination angle with respect to the traveling direction of the tire, and the reinforcing rib 40 in FIG.
  • the profile DD' shows that the thickness h3 is 2-9 mm, and the rib increases the rigidity of the small tread block 12 in the traveling direction of the tire, so that the shape of the tread is well maintained when the soil is gripped. .
  • the blocks whether it is the crown block 10, the middle block 20 or the shoulder block 30, some of them have shallow grooves 13 or narrow grooves 14; the shallow grooves 13 can enhance the mud discharging effect, and fine
  • the groove 14 can improve the heat dissipation effect of the block and the deformation grip ability; in order to achieve good traction and cornering performance, as shown in FIG. 4, the AA' portion of the large block 11 is schematically sectioned, and the depth of the shallow groove is H1 is 2-9 mm, and BB' of the large crown block 11' shown in Fig. 5 is a thin groove whose depth is also h1, that is, 2-9 mm; CC' section of the intermediate block 20 shown in Fig. 6.
  • the depth h2 of the fine groove is 2-9 mm; the width of the shallow groove and the thin groove may be determined according to the size of the block, and is generally set to 2-5 mm;
  • the motocross pneumatic tire can be provided with high straight-line traction and cornering performance when racing and jumping on a medium-hard terrain mixed road.
  • 110/90-19 62M is selected.
  • TT is used for the specifications of the rear wheel of the off-road motorcycle, and the test tires of the prior art
  • the first embodiment and the second embodiment of the present technical solution are mounted on the rim of 2.50X19, filled with an internal pressure of 91 kPa, and installed in the row.
  • the model is KX205F, which can be used for racing on a mixed road covered with a layer of soft soil on a hard ground, and for straight-line traction performance, straight-line turning performance and cornering stability.
  • the evaluation was performed by the driver's sensory evaluation, and the index of the conventional example was 100, in which the larger the value, the better the performance.
  • Table 1 The test results are shown in Table 1 below:
  • Example 1 Example 2 Crown area width Twa (mm) 1/3*TW 1/3*TW 1/3*TW Intermediate area width TWb (mm) 1/3*TW 1/3*TW 1/3*TW Shoulder area width TWc (mm) 1/3*TW 1/3*TW 1/3*TW Number of 1Pitch blocks in the crown area 4 6 2 Crown area block size same Different Different Large crown length L2 (mm) in the crown area 1/4*TW 1/3*TW 1/3*TW Small crown length L1 (mm) L2 3/4*L2 2/3*L2 Whether the size of the crown area is configured with fine grooves no Yes Yes Slot width (mm) -- 4 10 Fine groove depth h1 (mm) -- 3 11 Land ratio of the crown region twenty three% 25% 27% Number of 1Pitch blocks in the middle area 4 6 4 Intermediate zone block with or without staggered configuration no Have no Whether the middle block is configured with fine grooves no Yes no Whether the side of the block in the middle area is an irregular surface no Yes no Slot width (mm) -- 3 -- Fine groove depth h2 (
  • the embodiment of the technical solution has better linear traction performance, linear turning performance and cornering stability than the previous examples, and can provide motocross pneumatic tires to race and jump on the medium-hard terrain mixed road. It has high linear traction and cornering performance.
  • the utility model relates to a pneumatic tire for motocross race, wherein the treads are arranged in various regions and the land ratio is rationally designed, and the middle blocks are less in contact with the ground, and the crown blocks and the shoulder blocks are small. It is large enough to ensure the stability of straight-line driving. At the same time, when driving straight and turning, you can quickly remove the dirt, improve the driving force, and effectively bend.
  • the invention has reasonable design, convenient processing and good industrial applicability.

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  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

一种用于摩托车越野赛的充气轮胎，包括胎面上的胎冠区域、中间区域和胎肩区域，以及所述胎面上各区域对应的胎冠花纹块（10）、中间花纹块（20）和胎肩花纹块（30），胎面上的一个花纹周期内，胎冠花纹块（10）包括胎冠大花纹块（11）和胎冠小花纹块（12），数目相同，并且相互间隔设置，所述中间花纹块（20）对称分布于胎冠花纹块（10）两侧，每一侧均在纵向上相对于胎冠花纹块（10）交错设置，中间花纹块（20）之间在横向上以一个交错横距左右交错设置，所述胎肩花纹块（30）对称分布于中间花纹块（20）各自的两侧，其单侧数量多于单侧的中间花纹块（20）和胎冠花纹块（10）的数量，可确保直线行驶稳定性能，同时在直线行驶转过弯行驶时，可迅速拨开泥土，提升驱动力，有效地过弯。

Description

一种用于摩托车越野赛的充气轮胎 技术领域
本发明涉及一种用于摩托车越野赛的充气轮胎。
背景技术
摩托车越野赛充气轮胎胎面花纹一般采用规则的花纹块组成，为确保其在不平路面上的驱动力和排土性，各花纹块间隔设置，其中在硬地形路面使用的越野车比赛的轮胎(如图1)，为了提高在硬地形路面直线行驶牵引性能和转弯性能，花纹总陆比（相应胎面所有花纹块总的表面积相对于胎面总面积之比）整体设置较高，胎面花纹陆比一般设置为中间区域B之陆比>胎冠区域A之陆比>胎肩区域C之陆比（相应该区域花纹块总的表面积相对于该区域总面积之比），花纹块一般设置相同的高度，对于软地形路面使用的越野车比赛的轮胎(如图2)，为使花纹块易于陷入泥土，提供高的驱动力和转弯性能，花纹总陆比整体设置较低，花纹块的陆比一般设置为胎冠区域A之陆比>中间区域B之陆比>胎肩区域C之陆比。而对于中硬地形混合路面竞速及跳跃下行驶之越野车比赛轮胎，现有花纹仅适用于单一地形，无法兼顾在中硬地形路面竞速及跳跃行驶时具有高的直线行驶牵引性和过弯性能。
发明内容
基于上述现有摩托车越野轮胎无法兼顾在中硬地形路面牵引性和过弯性能的缺陷，本发明提出一种用于摩托车越野赛的充气轮胎，其技术方案如下：
一种用于摩托车越野赛的充气轮胎，包括胎面上的胎冠区域、中间区域和胎肩区域，以及所述胎面上各区域对应的胎冠花纹块、中间花纹块和胎肩花纹块，所述胎面上的一个花纹周期内，所述胎冠花纹块包括胎冠大花纹块和胎冠小花纹块，数目相同，并且相互间隔设置；所述中间花纹块对称分布于所述胎冠花纹块两侧，每一侧均在纵向上相对于所述胎冠花纹块交错设置，中间花纹块之间在横向上以一个交错横距左右交错设置；所述胎肩花纹块对称分布于两边所述中间花纹块各自的两侧，其单侧数量多于单侧的所述中间花纹块和所述胎冠花纹块的数量;所述中间区域的陆比小于所述胎冠区域的陆比和所述胎肩区域的陆比；所述胎肩花纹块的高度高于所述胎冠花纹块和中间花纹块的高度。
作为本技术方案的一些优选者，可以体现在如下方面：
在较佳实施例中，所述胎冠大花纹块长度为所述胎面总宽度的1/4-1/3，而所述胎冠小花纹块的长度为所述胎冠大花纹块长度的2/3-3/4。
在较佳实施例中，所述中间花纹块之间交错横距为该中间花纹块长度的1/3-2/3。
在较佳实施例中，所述胎冠区域的陆比设置为20%-25%；所述中间区域的陆比设置为15%-20%；所述胎肩区域的陆比设置为25%-30%.
在较佳实施例中，所述胎冠花纹块、中间花纹块和胎肩花纹块的高度范围为10-25mm；所述胎肩花纹块与所述胎冠花纹块和中间花纹块的高度差范围为1-4mm。
在较佳实施例中，所述胎冠花纹块和中间花纹块的顶面具有浅沟和/或细槽；该胎冠花纹块和中间花纹块在一个所述花纹周期内数目为2-8个。
在较佳实施例中，所述中间花纹块侧面具有不规则面，所述不规则面朝向于所述胎面的横向外侧，并且，相邻的所述中间花纹块其不规则面沿所述胎面纵向彼此反向设置。
在较佳实施例中，所述胎冠小花纹块与所述中间花纹块之间具有加强筋，所述加强筋以所述胎面的纵向左右对称设置，并且相对于轮胎行进方向具有倾斜角，加强筋的厚度为2-9mm。
在较佳实施例中，所述浅沟和细槽的深度为2-9mm，宽度为2-5mm。
在较佳实施例中，所述同一个花纹周期内，所述胎冠大花纹块可以是单一形状结构的胎冠大花纹块，可以包括形状结构略有差异的胎冠大花纹块。
本技术方案带来的有益效果是：
1. 胎面各区域花纹块排布及陆比合理的设计，中间花纹块接触地面的程度较小，而胎冠花纹块和胎肩花纹块足够大，可确保直线行驶稳定性能，同时在直线行驶转过弯行驶时，可迅速拨开泥土，提升驱动力，也能有效地过弯。
2. 相邻的中间花纹块其不规则面沿胎面纵向彼此反向设置，如此可以提升在直线转变为过弯状态时的驱动力和拨开泥土的能力，使摩托车有效地过弯。
附图说明
以下结合附图实施例对本发明作进一步说明：
图1是现有用于摩托车越野赛一种轮胎胎面1的平面示意图；
图2是现有用于摩托车越野赛另一种轮胎胎面1的平面示意图；
图3是本发明实施例一胎面1的平面示意图；
图4是图3所示实施例胎冠大花纹块11的一个剖面AA’所示的剖面部分示意图；
图5是图3所示实施例胎冠大花纹块11的另一个剖面BB’所示的剖面部分示意图；
图6是图3所示实施例中间花纹块20的一个剖面CC’所示的剖面部分示意图；
图7是图3所示实施例加强筋40的一个剖面DD’所示的剖面部分示意图。
具体实施方式
如图3至图7所示，本发明实施例的胎面其平面示意图和部分剖面图。
一种用于摩托车越野赛的充气轮胎，包括胎面1上的胎冠区域A、中间区域B和胎肩区域C，对应各区域的宽度TWa、TWb、TWc分别设置为胎面总宽度TW的1/3，以及胎面1上各区域对应的胎冠花纹块10、中间花纹块20和胎肩花纹块30;胎肩花纹块30包括：花纹块31、花纹块32、花纹块33和花纹块34，中间区域B的陆比小于胎冠区域A的陆比，也小于胎肩区域C的陆比；本实施例中，中间区域B的陆比为15%-20%，胎冠区域A的陆比为20%-25%，而胎肩区域C的陆比为25%-30%；并且，胎肩花纹块30的高度高于胎冠花纹块10以及中间花纹块20的高度，胎冠花纹块、中间花纹块和胎肩花纹块的高度范围为10-25mm；胎肩花纹块与所述胎冠花纹块和中间花纹块的高度差范围为1-4mm。如此设置，当运用此设计的摩托车越野赛充气轮胎在中硬地形混合路面跳跃时，中间花纹块20接触地面的程度较小，而胎冠花纹块10和胎肩花纹块30足够大，可确保直线行驶稳定性能，同时在直线行驶转过弯行驶时，可迅速拨开泥土，提升驱动力，也能有效地过弯。
在本实施例中，胎面1实则分为若干个相同的花纹周期（1 Pitch），每个花纹周期上的花纹块形状、分布对应相同，在整个胎面上不断重复。如图3，为胎面1的一个完整花纹周期的片段。
胎冠花纹块10包括：胎冠大花纹块11和胎冠小花纹块12，数量相同，并且相互间隔设置，胎冠花纹块10在一个所述花纹周期内数目为2-8个；胎冠大花纹块11的长度L1为胎面总宽度TW的1/4-1/3，而胎冠小花纹块12的长度L2为胎冠大花纹块11长度L1的2/3-3/4。此形态的大、小花纹块相对具有足够的不规则宽度，所以具有良好的抓地能力，实际设计中可以将胎冠大花纹块11和胎冠小花纹块12的各自两端处理成非常不规则的形状，增加其边缘效果，以提升牵引性。
同一个花纹周期内，所述胎冠大花纹块可以是单一形状结构的胎冠大花纹块11，可以包括形状结构略有差异的胎冠大花纹块11和胎冠大花纹块11′。胎冠大花纹块11上设有两条横向细槽13（见图4）；胎冠大花纹块11′左右各设有一细槽14，中部纵向设有一沟槽15（见图5）。
在此同一个花纹周期内，中间花纹块20对称分布于胎冠花纹块10的两侧，即中间区域B中，每一侧中间花纹块20均在纵向上相对于胎冠花纹块10交错设置，并且，中间花纹块20之间，在横向上以一个交错横距d左右交错设置；此交错横距为该中间花纹块20长度的1/3-2/3，每一侧中间花纹块20在一个花纹周期内数目为2-8个，使中间花纹块20呈锯齿形排列于胎面1纵向，此形状的中间花纹块具有良好的过弯抓地能力，并且其与胎冠花纹块10相交错的设置可以使排泥土特性达到最好。特别地，该中间花纹块20侧面具有不规则面22，此不规则面朝向于胎面1的横向外侧，并且，相邻的中间花纹块20其不规则面沿胎面1纵向彼此反向设置，如此可以提升在直线转变为过弯状态时的驱动力和拨开泥土的能力，以及轮胎的稳定性，使摩托车有效地过弯。
在此花纹周期内，胎肩花纹块30对称分布于两边中间花纹块20各自的两侧，即胎肩部分C，其单侧数量多于单侧的中间花纹块10和胎冠花纹块20的数量，并沿胎面1纵向呈不等距排列，所以使胎肩部分C在过弯到最大程度时仍然具有良好的防滑、驱动性能。
在胎冠小花纹块12与中间花纹块20之间具有加强筋40，该加强筋以胎面1的纵向左右对称设置，并且相对于轮胎行进方向具有倾斜角，在图7中加强筋40的剖面DD’，显示其厚度h3为2-9mm，此加强筋在轮胎的行进方向中增加了胎冠小花纹块12的刚性，使其在拨开泥土抓地时胎面的形状得到良好的保持。
在所有的花纹块中，不论是胎冠花纹块10、中间花纹块20还是胎肩花纹块30，其部分都具有浅沟13或是细槽14；浅沟13可以提升排泥效果，而细槽14可以改善花纹块的散热效果和形变抓地能力；为达到良好的牵引性和过弯性能，如图4所示，胎冠大花纹块11的AA’部分剖面示意，其浅沟的深度h1为2-9mm，图5所示胎冠大花纹块11’的BB’为一细槽，其深度也为h1，即2-9mm；在图6中所示中间花纹块20的CC’剖面，其细槽的深度h2为2-9mm；浅沟和细槽的宽度可依花纹块大小不同而定，一般设置为2-5mm；
如此整体设置，可提供摩托车越野赛充气轮胎在中硬地形混合路面上竞速及跳跃行驶时具有高的直线行驶牵引性和过弯性能。
使用本发明技术以后，选用110/90-19 62M TT用于越野摩托车后轮的规格，将现有技术的以往例、本技术方案的实施例1及实施例2各测试轮胎装于2.50X19的轮辋上，填充91kPa的内压，安装在排气量450CC的摩托车上，车型为KX205F，在坚硬的地面上覆盖一层松软的土壤之混合路面上竞速及跳跃下行驶时对直线行驶牵引性能、直线转过弯性能和过弯稳定性能进行评价，通过驾驶员的感官评价，以以往例为100的指数，其中数值越大，性能越好。测试结果如下表1所示：
表1
以往例 实施例1 实施例2
胎冠区域宽度Twa（mm） 1/3*TW 1/3*TW 1/3*TW
中间区域宽度TWb（mm） 1/3*TW 1/3*TW 1/3*TW
胎肩区域宽度TWc（mm） 1/3*TW 1/3*TW 1/3*TW
胎冠区域1Pitch花纹块个数 4 6 2
胎冠区域花纹块大小 一样 不一样 不一样
胎冠区域大花纹块长度L2（mm） 1/4*TW 1/3*TW 1/3*TW
胎冠区域小花纹块长度L1（mm） L2 3/4*L2 2/3*L2
胎冠区域大小花纹块是否配置细沟槽 无 是 是
细沟槽宽度（mm） -- 4 10
细沟槽深度h1（mm） -- 3 11
胎冠区域的陆比 23% 25% 27%
中间区域1Pitch花纹块个数 4 6 4
中间区域花纹块有无交错配置 无 有 无
中间区域花纹块是否配置细沟槽 否 是 否
中间区域花纹块侧面是否为不规则面 否 是 否
细沟槽宽度（mm） -- 3 --
细沟槽深度h2（mm） -- 4 --
中间区域的陆比 21% 19% 29%
胎冠区域与中间区域之间是否配置加强筋 是 是 无
加强筋高度h3（mm） 3 4 --
胎肩区域1Pitch花纹块个数 4 7 4
胎肩花纹块高度与胎冠、中间区域花纹块之间的高度差 0 2.5 0
胎肩区域的陆比 16% 28% 22%
直线行驶牵引性能（指数） 100 105 105
直线转过弯性能（指数） 100 110 100
过弯稳定性能（指数） 100 105 105
可见，本技术方案之实施例其直线行驶牵引性能、直线转过弯性能及过弯稳定性能均优于以往例，可提供摩托车越野赛充气轮胎在中硬地形混合路面上竞速及跳跃行驶时具有高的直线行驶牵引性和过弯性能。
以上所述，仅为本发明较佳实施例而已，故不能依此限定本发明实施的范围，即依本发明专利范围及说明书内容所作的等效变化与修饰，皆应仍属本发明涵盖的范围内。
工业实用性
本发明一种用于摩托车越野赛的充气轮胎，其胎面各区域花纹块排布及陆比合理的设计，中间花纹块接触地面的程度较小，而胎冠花纹块和胎肩花纹块足够大，可确保直线行驶稳定性能，同时在直线行驶转过弯行驶时，可迅速拨开泥土，提升驱动力，也能有效地过弯。本发明设计合理，加工方便，具有良好的工业实用性。

Claims (10)

  1. 一种用于摩托车越野赛的充气轮胎，包括胎面上的胎冠区域、中间区域和胎肩区域，以及所述胎面上各区域对应的胎冠花纹块、中间花纹块和胎肩花纹块，其特征在于：所述胎面上的一个花纹周期内，所述胎冠花纹块包括胎冠大花纹块和胎冠小花纹块，相互间隔设置；所述中间花纹块对称分布于所述胎冠花纹块两侧，每一侧在纵向上相对于所述胎冠花纹块交错设置，中间花纹块之间在横向上以一个交错横距左右交错设置；所述胎肩花纹块对称分布于两边所述中间花纹块各自的两侧，其单侧数量多于单侧的所述中间花纹块和所述胎冠花纹块的数量;所述中间区域的陆比小于所述胎冠区域的陆比和所述胎肩区域的陆比；所述胎肩花纹块的高度高于所述胎冠花纹块和中间花纹块的高度。
  2. 根据权利要求1所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述胎冠大花纹块长度为所述胎面总宽度的1/4-1/3，而所述胎冠小花纹块的长度为所述胎冠大花纹块长度的2/3-3/4。
  3. 根据权利要求1所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述中间花纹块之间交错横距为该中间花纹块长度的1/3-2/3。
  4. 根据权利要求1所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述胎冠区域的陆比设置为20%-25%；所述中间区域的陆比设置为15%-20%；所述胎肩区域的陆比设置为25%-30%。
  5. 根据权利要求1所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述胎冠花纹块、中间花纹块和胎肩花纹块的高度范围为10-25mm；所述胎肩花纹块与所述胎冠花纹块和中间花纹块的高度差范围为1-4mm。
  6. 根据权利要求2或3所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述胎冠花纹块和中间花纹块的顶面具有浅沟和/或细槽，该胎冠花纹块和中间花纹块在一个所述花纹周期内数目为2-8个。
  7. 根据权利要求3所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述中间花纹块侧面具有不规则面，所述不规则面朝向于所述胎面的横向外侧，并且，相邻的所述中间花纹块其不规则面沿所述胎面纵向彼此反向设置。
  8. 根据权利要求6所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述胎冠小花纹块与所述中间花纹块之间具有加强筋，所述加强筋以所述胎面的纵向左右对称设置，并且相对于轮胎行进方向具有倾斜角，加强筋的厚度为2-9mm。
  9. 根据权利要求6所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述浅沟和细槽的深度为2-9mm，宽度为2-5mm。
  10. 根据权利要求6所述一种用于摩托车越野赛的充气轮胎，其特征在于：所述同一个花纹周期内，所述胎冠大花纹块可以是单一形状结构的胎冠大花纹块，可以包括形状结构略有差异的胎冠大花纹块。
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CN107672386A (zh) * 2017-10-27 2018-02-09 建大橡胶（中国）有限公司 一种块状花纹轮胎
CN112976948A (zh) * 2021-04-08 2021-06-18 山东玲珑轮胎股份有限公司 一种越野轮胎
CN112976948B (zh) * 2021-04-08 2024-05-14 山东玲珑轮胎股份有限公司 一种越野轮胎

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