CN104691245A - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
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- CN104691245A CN104691245A CN201410539726.2A CN201410539726A CN104691245A CN 104691245 A CN104691245 A CN 104691245A CN 201410539726 A CN201410539726 A CN 201410539726A CN 104691245 A CN104691245 A CN 104691245A
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- Prior art keywords
- pattern block
- bight
- tire
- tire sipe
- air
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Abstract
The invention aims to limit sliding on a pattern block corner, limit sliding sounds, and improve wearing resistance and crack resistance; the pneumatic tire comprises a main groove (1) extending in a tire periphery direction and a plurality of pattern blocks(3) formed by cross grooves (2) intersecting with the main groove (1); a corner (4), far away from a tire width direction center, of the pattern block (3) is provided with at least one siping (5); the siping (5) intersects with a line connecting the pattern block center with the corner top.
Description
Technical field
The present invention relates to a kind of air-inflation tyre.
Background technology
All the time, as air-inflation tyre, be known to the air-inflation tyre of the tire sipe such as possessing following structure etc.
Patent Document 1 discloses following structure, the region of side of contacting to earth after being arranged in shoulder block is provided with many tire sipes, and the side of first contacting to earth of this tire sipe tilts respectively to outside tire axial.
Patent Document 2 discloses following structure, pattern block is formed many tire sipes extended to tire circumferential direction, and make the degree of depth of each tire sipe different.
Patent Document 3 discloses following structure, at pattern block, the edge, both sides of main line is provided with notch.
Patent Document 4 discloses following structure, pattern block is formed to the sharp-pointed bight of tire circumferential direction, this bight is provided with multiple aperture.
But in patent documentation 1, tire sipe is at the lateral opening of pattern block.Therefore, a part for pattern block becomes the part of deficiency in intensity, according to circumstances may collapse broken etc.
In patent documentation 2, causing the intensity of pattern block impaired because forming dark tire sipe, may collapse broken etc.
In patent documentation 3, although can reduce the rigidity at pattern block edge, improve the road-holding property on ice and snow road, resistance to irregular wear is deteriorated, and produces slip sound.
In patent documentation 4, because aperture causes increasing in the slip kicking out of (り of kicking goes out) part of pattern block, abrasion test is deteriorated.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Publication becomes 5-278416 publication
Patent documentation 2: Japanese Patent Publication becomes 2-241804 publication
Patent documentation 3: Japanese Patent Publication becomes 6-270612 publication
Patent documentation 4: Japanese Patent Publication 2011-98601 publication
Summary of the invention
(1) technical matters that will solve
The present inventor pays close attention to tyre surface, the wear patterns (wear track tyre surface is formed) on especially each pattern block surface.So learn, if tire sipe is formed as pitching with the straight line intersection from top, pattern block central link bight, then anti-sliding stop can improve abrasion test.
Therefore, technical matters of the present invention is, is limited in the slip on pattern block bight, and restriction produces slip sound, meanwhile, improves abrasion test and splitting resistance.
(2) technical scheme
As the technical scheme for solveing the technical problem, the invention provides a kind of air-inflation tyre,
Possess by the main line extended along tire circumferential direction and the multiple pattern blocks formed with the traverse furrow groove that described main line intersects,
Described pattern block, in the bight of position leaving tire width direction center, forms at least 1 tire sipe, and described tire sipe intersects with the straight line linking described pattern block center and top, described bight.
According to this structure, can effective anti-sliding stop by the tire sipe being formed in pattern block bight.That is, because this tire sipe is formed as pitching with the straight line intersection linking pattern block center and top, bight, therefore, it is possible to effective anti-sliding stop.Its result, can, while restriction produces slip sound (noise), prevent from, with the irregular wear slided, namely improving resistance to irregular wear, preventing collapsing of pattern block bight broken, namely improve splitting resistance.
Preferably, described tire sipe and the linear vertical linking described pattern block center and top, described bight.
According to this structure, resistance to irregular wear can be improved as the structure of more difficult slip.
Preferably, what described tire sipe was formed in described pattern block kicks out of side corner sections.
According to this structure, in the place the most easily occurring to slide, the effect of anti-sliding stop can be played by arranging tire sipe.
Preferably, described tire sipe is formed in from nearest position, the top, described bight of described pattern block.
According to this structure, to the position that can play effect of sliding, by configuring the tire sipe of described structure, abrasion test can be improved further.
Preferably, described tire sipe is at the outward flange not opening of described pattern block.
According to this structure, can effectively prevent from collapsing broken etc. in pattern block bight because forming tire sipe and causing.
Preferably, described tire sipe is made up of many of configured in parallel, and the tip side being positioned at the described bight of described pattern block is formed darker.
According to this structure, the resistance to irregular wear on pattern block bight can be improved further, meanwhile, even if wearing and tearing are carried out, owing to leaving the sufficient degree of depth in this position, therefore, it is possible to make the restriction effect of slip continue.
Preferably, rib is formed in the described corner side of described pattern block.
According to this structure, the rigidity on the pattern block bight that the formation of tire sipe can be prevented adjoint reduces.
Preferably, described rib corresponds to each region divided by described many tire sipes, and the distance from the surface of described pattern block is different, on the surface of described bight tip side closer to described pattern block.
According to this structure, strengthened by the reinforcement of the side deeper formed many tire sipes, applicable rigid balancing can be formed, thus effectively broken etc. generation is collapsed in restriction.
Preferably, described rib is formed on the medial surface of traverse furrow groove forming described pattern block.
According to this structure, the drainage of main line can not be damaged, realize the strengthening of rigidity on pattern block bight.
(3) beneficial effect
According to the present invention, by the anti-sliding stop of tire sipe, the generation of the adjoint slip sound of this slip can be limited.In addition, can limit to result from and slide and the irregular wear of generation, namely improve resistance to irregular wear, prevent collapsing of pattern block bight broken, namely improve splitting resistance.
Accompanying drawing explanation
Fig. 1 is the airtyred tyre surface developed surface of present embodiment.
Fig. 2 is the enlarged partial isometric view of the pattern block of Fig. 1.
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described.In addition, in the following description, the term of use expression specific direction, position (such as required, " on ", D score, " side ", " end "), but using these terms to be for the ease of the invention of understanding with reference to accompanying drawing, is not limit technical scope of the present invention by the meaning of these terms.In addition, illustrative in nature is below example, its object is not restriction the present invention, its applicable thing or its purposes.Further, accompanying drawing is schematic diagram, and each dimension scale etc. are different from the dimension scale in reality.
Fig. 1 is the airtyred tyre surface developed surface of present embodiment.On this tyre surface, form multiple pattern block 3 (3a is ribs) by many main lines 1 extended along tire circumferential direction with many traverse furrow grooves 2 that this main line 1 intersects.
Pattern block 3 is overlooked as rectangle, in the side of line of centers C leaving tire width direction, and be positioned at kick out of side bight 4 on form 3 articles of tire sipes 5 (the first tire sipe 6, second tire sipe 7 and the 3rd tire sipe 8).Here, bight 4 refers to that the region that easily formation is worn and torn, these wearing and tearing represent and receives large power (bulge interval is large).Each tire sipe 5 is formed as with to link pattern block 3 center vertical with the straight line S on top, described bight 4.In addition, the two ends of each tire sipe 5 than outward flange above pattern block 3 by inner terminate inside, at medial surface not opening.And nearest the first tire sipe 6 of the top 4a in digression portion 4 is the darkest, shoal successively along with leaving and formed, the 3rd tire sipe 8 is the most shallow.In addition, preferably, each tire sipe 5 has the length of more than 3mm, and the shortest distance from the lateral edges (pattern block end) in the bight 4 of pattern block 3 to the two ends of each tire sipe 5 is more than 1.5mm.Further, preferably, each tire sipe 5 be spaced apart more than 3mm.
Rib 9 is formed at the medial surface of the horizontal channel side of pattern block 3.Rib 9 extends to the assigned position arrived close to pattern block 3 surface from the trench bottom of traverse furrow groove 2.In addition, rib 9 is made up of the first reinforced region 10, second reinforced region 11 and the 3rd reinforced region 12, and 3 imaginary area height of the medial surface that these reinforced regions correspond to the pass each tire sipe 5 to the medial surface of prolongation and split are different.In each reinforced region, the distance to pattern block 3 surface is different.Be formed in by the top in bight 4 the shortest to the distance on pattern block 3 surface to the first reinforced region 10 in the first imaginary area of the first tire sipe 6 defined.And this distance increases with the sequential steps property of the second reinforced region 11, the 3rd reinforced region 12.Specifically, the first reinforced region 10 is from the trench bottom of main line to distance above, roughly the same with the distance (depth dimensions) that the first tire sipe 6 originates in above.Second reinforced region 11 is from the trench bottom of main line to distance above, roughly the same with the distance (depth dimensions) that the second tire sipe 7 originates in above.3rd reinforced region 12 is from the trench bottom of main line to distance above, roughly the same with the distance (depth dimensions) that the 3rd tire sipe 8 originates in above.In addition, the thickness of rib 9 is set as the value of 20% ~ 60% relative to the width dimensions of traverse furrow groove 2.If be less than 20%, then stiffening effect is not enough, if be greater than 60%, then it is not enough that the slip that tire sipe brings reduces effect.
Like this, in the pattern block 3 of described structure, tire sipe 5 is formed in the side of the line of centers C leaving tire width direction, and is positioned at and kicks out of on the bight 4 of side.And tire sipe 5 is configured to and the linear vertical linking pattern block 3 center and top, described bight 4.Therefore, the region of the easy formation wear patterns of stressed large (bulge interval is large) in motion, the edge part useful effect obtained by forming tire sipe 5 in road surface, anti-sliding stop.Therefore, be difficult to produce the irregular wear with sliding, can limit slippage sound (noise).In addition, owing to making momentum large bight 4 tip side, tire sipe 5 is being formed comparatively dark, even if therefore pattern block 3 weares and teares, the function as tire sipe 5 also can not be impaired, can long-term anti-sliding stop.Further, owing to being formed with rib 9 at the medial surface of pattern block 3, although be therefore formed with tire sipe 5, the rigidity of pattern block 3 can also be maintained.In addition, because rib 9 is formed to the reinforced region that the distance on pattern block 3 surface is different by 3, therefore, it is possible to make the rigid balancing of pattern block 3 suitable.Therefore, the bight 4 of pattern block 3 is difficult to collapse the problems such as broken.
Embodiment
Ranking test is carried out with the tire of comparative example with to the concentrated tire studied intensively of tire sipe 5 as characteristic of the present invention.That is, the tire being of a size of 11R22.5 is arranged on the wheel rim of 22.5 × 7.50, fills air and make interior pressure reach 700kPa, be arranged on vehicle that nominal payload is 10t, resistance to irregular wear, noise level, splitting resistance are evaluated.
Resistance to irregular wear is, measures T/H amount when travelling 20000km and exponentiate.Index larger expression abrasion test is more excellent.
Noise level is, is arranged on described wheel rim by described tire with the state of abrasion factor 50%, fills air and makes interior pressure reach 700kPa, measurement noises under load 26.7kN exponentiate.Index larger expression noise is less.
Splitting resistance is, is multiplied and exponentiate by the crack length that tyre surface when travelling 20000km is formed with the degree of depth.Index larger expression crackle is fewer.
Table 1
In Table 1, comparative example 1 is the tire not only not had tire sipe 5 but also do not have rib 9 on pattern block 3.
Embodiment 1 is the tire on the bight 4 of pattern block 3 with 1 tire sipe 5.
Embodiment 2 is the tire on the bight 4 of pattern block 3 with 2 tire sipes 5.
Embodiment 3 is the tire on the bight 4 of pattern block 3 with 3 tire sipes 5.
Described embodiment 1 ~ 3 does not all have rib 9.
Embodiment 4 is the tire structure of embodiment 1 being added to rib 9.
Embodiment 5 is the tire structure of embodiment 2 being added to highly different ribs 9.
Embodiment 6 is the tire structure of embodiment 3 being added to highly different ribs 9.
Known according to table 1, the resistance to irregular wear of any one in embodiment 1 to 6 and splitting resistance all excellent, can noise be reduced.Be set to 3 especially by by tire sipe 5, resistance to irregular wear can be improved, reduce noise level.Further, by forming rib 9, splitting resistance can be significantly improved.
In addition, the present invention is not limited to the structure described in described embodiment, can carry out various change.
Such as, in said embodiment, tire sipe 5 is only formed on the bight 4 of kicking out of side of the line of centers leaving tire width direction, but also can considers the rotation of tire, be formed in (Ta み Write body of entering into) on the bight 4 of side.
In addition, in said embodiment, tire sipe 5 is formed as linearity on the surface of pattern block 3, but in addition, also can be formed as other shapes such as waveform, serration.
In addition, in said embodiment, rib 9 is formed as continuous print integrative-structure, but also can be made up of independently raised line, can also be local-connection, or only upper side independently structure.The cross sectional shape of each raised line can choose the various form such as triangle, quadrangle.In addition, upper end position is formed as stepped, but also can be formed as making its smooth change, and upper end shape can also be formed as the various forms such as triangle, quadrangle, semicircle.
In addition, in said embodiment, rib 9 is formed in the medial surface of the pattern block 3 forming traverse furrow groove 2, but also can be formed in the medial surface forming main line 1.
Industrial applicibility
The present invention can be applicable to air-inflation tyre, is especially adapted at the studless tire that ice and snow road travels.
Description of reference numerals
1-main line
2-traverse furrow groove
3-pattern block
4-bight
5-tire sipe
6-the first tire sipe
7-the second tire sipe
8-the three tire sipe
9-rib
10-the first reinforced region
11-the second reinforced region
12-the three reinforced region
Claims (9)
1. an air-inflation tyre, is characterized in that, possesses by the main line extended along tire circumferential direction and the multiple pattern blocks formed with the traverse furrow groove that described main line intersects,
Described pattern block, in the bight of position leaving tire width direction center, forms at least 1 tire sipe, and described tire sipe intersects with the straight line linking described pattern block center and top, described bight.
2. air-inflation tyre according to claim 1, is characterized in that, described tire sipe and the linear vertical linking described pattern block center and top, described bight.
3. air-inflation tyre according to claim 1, is characterized in that, what described tire sipe was formed in described pattern block kicks out of side corner sections.
4. air-inflation tyre according to claim 1, is characterized in that, described tire sipe is formed in from nearest position, the top, bight of described pattern block.
5. air-inflation tyre according to claim 1, is characterized in that, described tire sipe is at the outward flange not opening of described pattern block.
6. air-inflation tyre according to claim 1, is characterized in that, described tire sipe is made up of many of configured in parallel, and the tip side being positioned at the described bight of described pattern block is formed darker.
7. air-inflation tyre according to claim 1, is characterized in that, forms rib in the described corner side of described pattern block.
8. air-inflation tyre according to claim 7, is characterized in that, described tire sipe is made up of many of configured in parallel, and the tip side being positioned at the described bight of described pattern block is formed darker,
Described rib corresponds to each region divided by described many tire sipes, and the distance from the surface of described pattern block is different, on the surface of described bight tip side closer to described pattern block.
9. air-inflation tyre according to claim 7, is characterized in that, described rib is formed on the medial surface of traverse furrow groove forming described pattern block.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013255177A JP2015112957A (en) | 2013-12-10 | 2013-12-10 | Pneumatic tire |
| JP2013-255177 | 2013-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104691245A true CN104691245A (en) | 2015-06-10 |
Family
ID=53338956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410539726.2A Pending CN104691245A (en) | 2013-12-10 | 2014-10-13 | Pneumatic tire |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015112957A (en) |
| CN (1) | CN104691245A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7409044B2 (en) | 2019-11-25 | 2024-01-09 | 住友ゴム工業株式会社 | tire |
| JP7460888B2 (en) | 2020-02-17 | 2024-04-03 | 横浜ゴム株式会社 | tire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387754A (en) * | 1979-08-20 | 1983-06-14 | Pneu Uniroyal Englebert | Tire tread pattern |
| JPH02303907A (en) * | 1989-05-18 | 1990-12-17 | Bridgestone Corp | Weather-proof pneumatic tire for heavy load |
| JP2006123760A (en) * | 2004-10-29 | 2006-05-18 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2012051504A (en) * | 2010-09-02 | 2012-03-15 | Bridgestone Corp | Pneumatic tire |
-
2013
- 2013-12-10 JP JP2013255177A patent/JP2015112957A/en active Pending
-
2014
- 2014-10-13 CN CN201410539726.2A patent/CN104691245A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387754A (en) * | 1979-08-20 | 1983-06-14 | Pneu Uniroyal Englebert | Tire tread pattern |
| JPH02303907A (en) * | 1989-05-18 | 1990-12-17 | Bridgestone Corp | Weather-proof pneumatic tire for heavy load |
| JP2006123760A (en) * | 2004-10-29 | 2006-05-18 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2012051504A (en) * | 2010-09-02 | 2012-03-15 | Bridgestone Corp | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015112957A (en) | 2015-06-22 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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Application publication date: 20150610 |