CN102310723A - Air-inflation tyre - Google Patents
Air-inflation tyre Download PDFInfo
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- CN102310723A CN102310723A CN2011101573914A CN201110157391A CN102310723A CN 102310723 A CN102310723 A CN 102310723A CN 2011101573914 A CN2011101573914 A CN 2011101573914A CN 201110157391 A CN201110157391 A CN 201110157391A CN 102310723 A CN102310723 A CN 102310723A
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- tire
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- 210000003754 fetus Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 27
- 230000001976 improved effect Effects 0.000 description 15
- 230000001788 irregular Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
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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
- B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
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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
- B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
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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
- B60C11/0306—Patterns comprising block rows or discontinuous ribs
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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
- B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
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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
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
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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
- 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
- B60C2011/0372—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane with particular inclination angles
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C2011/1213—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe sinusoidal or zigzag at the tread surface
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C2011/1231—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe being shallow, i.e. sipe depth of less than 3 mm
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
- B60C2011/1245—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern being arranged in crossing relation, e.g. sipe mesh
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C2011/129—Sipe density, i.e. the distance between the sipes within the pattern
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The present invention provides a kind of air-inflation tyre, and it has the directivity decorative pattern, can improve wetland performance and snowfield performance, and can improve anti-irregular wear property.Air-inflation tyre of the present invention utilizes central major trough (1), outside major trough (2) and translot (3); Mark off a plurality of pattern blocks (5) at central portion (C); Simultaneously on the strip decorative pattern (5) of tire shoulder portion (S), be provided with tire shoulder pattern groove (4); Wherein, said air-inflation tyre is the directivity decorative pattern, and the translot (3) that is positioned at the tire width direction both sides with respect to central major trough (1) is with respect to the mutual reversal dip of tire equator; The central lopsidedness angle θ 1 of this translot (3) is to be made as acute angle; Circumferential part (3 ') according to translot (3) projection on tire is circumferential is present in the tire mode in full week simultaneously, is positioned at the translot (3) of central major trough (1) tire width direction both sides in the configuration of upwards staggering in tire week, and on pattern block (5) and strip decorative pattern (6), sipes per tire (7) is set.
Description
Technical field
The present invention relates to a kind of air-inflation tyre, more specifically, relate to and a kind ofly can improve wetland performance and snowfield performance, and can improve the air-inflation tyre of anti-irregular wear property.
Background technology
As everyone knows, utilize many major troughs that circumferentially extend along tire tire to be divided into a plurality of pattern blocks, can have excellent snowfield performance and drainage performance with many translots that extend along tire width direction.In this air-inflation tyre,, can on tyre surface, adopt the directional tread decorative pattern for obtaining higher drainage performance.For example patent documentation 1 proposes, and tread contour is formed the directivity decorative pattern, and this directivity decorative pattern is provided with along many major troughs that circumferentially extend and many tire shoulder pattern grooves and sipes per tire along the tire width direction diagonally extending.
On the other hand, the Tyte Wear characteristic is different and different with trailing wheel and installation site because of the vehicle front-wheel, and the installation site of therefore need rotating at regular intervals with balanced each Tyte Wear, increases the service life.But, if tire has the directional tread decorative pattern of having specified the tire hand of rotation, then since the tire hand of rotation fix, so can only between the vehicle both sides are installed on the front and back wheel of the same side, carry out tire changing by turns the time.Therefore; For light truck with the tire that kind when rotated tire shoulder portion bear tire than heavy load; When adopting above-mentioned directional tread decorative pattern, just tire can only be between the front and back wheel of the same side, rotated, thereby the irregular wear of tire shoulder portion can't be suppressed through tire by turns.In addition, for suppressing irregular wear, its effective ways are to reduce translot and improve the pattern block rigidity, but may reduce the snowfield performance this moment.Therefore, wetland performance, snowfield performance and anti-irregular wear property are difficult to taken into account.
The prior art document
Patent documentation
[patent documentation 1] Japanese Patent Laid is opened the 2007-161114 communique
Summary of the invention
The problem that the invention quasi-solution is determined
The object of the invention is to address the above problem, and therefore a kind of directivity decorative pattern that has will be provided, and can improve wetland performance and snowfield performance, and can improve the air-inflation tyre of anti-irregular wear property.
For the air-inflation tyre of the present invention of reaching above-mentioned purpose at least 2 outside major troughs that are provided with the central major trough that circumferentially extends in tire equator upper edge tire on the tyre surface, circumferentially extend and many translots that between said central major trough and said outside major trough, extend and be communicated with said central major trough and said outside major trough along tire width direction in these central authorities major trough tire width direction both sides and along tire; Utilize these central major troughs, outside major trough and translot; Mark off a plurality of pattern blocks at central portion; The tire shoulder portion in the tire width direction outside of while major trough in the outermost outside; The tire shoulder pattern groove that extends and be not communicated with this outermost outside major trough along tire width direction is set; Form the strip decorative pattern in this tire shoulder portion; It is characterized in that; Said air-inflation tyre is the directivity decorative pattern; The said translot that is positioned at the tire width direction both sides with respect to said central major trough is with respect to the mutual reversal dip of tire equator, said translot be communicated with the place with said central major trough with the circumferential angulation of tire be that central lopsidedness angle θ 1 is made as acute angle, simultaneously according to said translot tire circumferentially on the circumferential part of projection be present in the tire mode in full week; Be positioned at the said translot of said central major trough tire width direction both sides in the configuration of upwards staggering in tire week, and on said pattern block and said strip decorative pattern, sipes per tire be set.
The effect of invention
According to the present invention; Because being positioned at the translot of tire width direction both sides with respect to central major trough is with respect to the mutual reversal dip of tire central authorities' major trough; This translot circumferentially becomes central lopsidedness angle θ 1 to be made as acute angle with connection place of central major trough with tire, therefore can improve wetland performance and snowfield performance.Especially and since according to translot tire circumferentially on the circumferential part of projection be present in the tire mode in full week, be positioned at the translot of central major trough tire width direction both sides, the wetland performance in the time of therefore can improving tyre rotation in the configuration of upwards staggering in tire week.In addition, owing to be provided with and the disconnected tire shoulder pattern groove of outermost outside major trough, therefore can improve anti-irregular wear property in tire shoulder portion.Thus, the tire that has the directivity decorative pattern can improve anti-irregular wear property when improving wetland performance and snowfield performance.
In the present invention; Preferably form groove depth and groove width the end protruding stria portion less than other positions of said translot at the position that is communicated with of translot and central major trough; This end groove depth of protruding stria portion is made as 40～60% of central major trough groove depth, and groove width is made as 30～50% of the maximum groove width of translot.Thus, can when guaranteeing drainage performance, increase the pattern block rigidity of central portion, improve the anti-irregular wear property of central portion.
In the present invention, preferred central lopsidedness angle θ 1 be communicated with the place with outside major trough than translot with the circumferential angulation of tire be that tire shoulder lopsidedness angle θ 2 is littler relatively.Thus, with the drainage performance that improves translot, thereby can remedy because of the drainage performance that the end protruding stria portion decreases is set.More preferably tire shoulder lopsidedness angle θ 2 is 5～30 ° with the difference of central lopsidedness angle θ 1.Thus, can further improve the drainage performance of translot.In addition, preferred central lopsidedness angle θ 1 is 40～65 °, thus, can when improving drainage performance, improve abrasion test.
In the present invention, preferably on the surface of pattern block fine groove is set, the spacing of this fine groove is made as 2.5～5mm simultaneously, and the degree of depth is made as 0.1～0.8mm, and width is made as 0.1～0.8mm.Thus, can improve wetland performance and snowfield performance.
In the present invention, preferably the portion in the tire width direction inside edge of strip decorative pattern disposes a plurality of chamfered section with chamfered edge amount this shape of cyclical variation on tire is circumferential at interval or continuously.Thus, can increase the edge amount, improve the wetland performance.
In the present invention, preferred tire shoulder pattern groove and the circumferential tilt angle theta 3 of tire are 90 ± 10 °.Thus, can guarantee strip decorative pattern rigidity, improve abrasion test.
In the present invention, the JIS A type hardness tester of rubber under-10 ℃ that is preferably formed fetus face is 55～70.Thus, can the rigidity of pattern block and strip decorative pattern be controlled in the proper range, improve anti-irregular wear property, and improve the snowfield performance.
In addition, preferred above-mentioned each air-inflation tyre is used tire as the light truck that under the above condition of air pressure 350kPa, uses.
Description of drawings
Fig. 1 is the air tread front elevation according to the embodiment of the invention.
Fig. 2 is the front elevation with pattern block enlarged and displayed adjacent with central major trough in the air-inflation tyre shown in Figure 1.
Fig. 3 is the instruction diagram with airtyred central portion enlarged and displayed shown in Figure 1.
Fig. 4 is the planar view with tire shoulder portion strip decorative pattern local enlargement display in the air-inflation tyre shown in Figure 1.
Fig. 5 is the lateral plan of pattern block adjacent with central major trough in the air-inflation tyre shown in Figure 2.
Fig. 6 is the section-drawing with set fine groove enlarged and displayed on the pattern block adjacent with central major trough in the air-inflation tyre shown in Figure 2.
Fig. 7 is the lateral plan of airtyred tire shoulder shown in Figure 4 portion strip decorative pattern.
Description of reference numerals
1 central major trough
2 outside major troughs
3 translots
Protruding stria portion at the bottom of the 3a
4 tire shoulder pattern grooves
5 pattern blocks
6 strip decorative patterns
7 sipes per tires
8 fine grooves
9 chamfered section
The specific embodiment
In air-inflation tyre of the present invention shown in Figure 1, tyre surface T is provided with 1 the central major trough 1 that is positioned at that tire equator E goes up and circumferentially extends along tire, and 2 outside major troughs 2 that are positioned at these central authorities' major trough 1 both sides and circumferentially extend along tire.Many translots 3 are according to the mode that tilts to be communicated with between these central major troughs 1 and the outside major trough 2, along the circumferential arranged spaced of tire.The structure of central authorities' major trough 1 is an elongate in shape, contains the hollow part branch at tire during projection on circumferentially.In addition, on the S of tire shoulder portion in the outside of outside major trough 2, contain the tire shoulder pattern groove 4 of end along the circumferential arranged spaced of tire, its from the tire shoulder edge laterally major trough 2 extend, and be not connected with outside major trough 2.So, the central portion C of the inboard of major trough 2 in the outside is with being divided into the pattern block row that 2 row are formed by a plurality of pattern blocks 5.And in the outside S of tire shoulder portion in the outside of major trough 2, then form and have a plurality of strip decorative patterns 6 that contain end tire shoulder pattern groove 4.On the surface of these pattern blocks 5 and strip decorative pattern 6, be provided with many sipes per tires 7 that on plane angle, are respectively zig-zag and extend along tire width direction.
Be arranged at the major trough quantity that circumferentially extend on the edge on the tyre surface T, be not limited in 1 central major trough 1 shown in Figure 1 and 2 outside major troughs 23.In addition, the shape of sipes per tire 7 does not have special restriction, extends as long as form along tire width direction.
In the airtyred tread contour of the present invention, the translot 3 that is positioned at the tire width direction both sides with respect to central major trough 1 is with respect to the mutual reversal dip of tire equator E, thereby becomes the directivity decorative pattern.This translot 3 and the directivity decorative pattern that contains the tire shoulder pattern groove 4 of end that has to the tire peripheral, oblique; Owing to have along circumferential prolongation of tire and prolongation along tire width direction; Therefore can be when embedding snow; Brake and the driving effect before and after bringing into play vehicle simultaneously, and prevent laterally to break away effect.But this directivity decorative pattern can only be rotated tire between the front and back wheel of vehicle the same side, therefore when the S of tire shoulder portion configuration pattern block row, will increase heel-and-toe wear, is difficult to suppress irregular wear.Yet it is as shown in Figure 1; Through the tire shoulder pattern groove 4 that contains the end is set at the S of tire shoulder portion; This tire shoulder pattern groove 4 is not communicated with outside major trough 2; And circumferentially form the strip decorative pattern 6 of ring bank partial continuous in tire shoulder portion S upper edge, and can reduce the stiffness change that the S of tire shoulder portion made progress in tire week, suppress the irregular wear of the tire shoulder S of portion.
As shown in Figure 2, be called central lopsidedness angle θ 1 with what translot 3 was communicated with the place with central major trough 1 with the circumferential angulation of tire.The lopsidedness angle θ of these central authorities 1 is made as acute angle.The lopsidedness angle θ of central authorities 1 is preferably 40～65 °.Here, central lopsidedness angle θ 1 be translot 3 groove width line of centers and the circumferential angulation of tire.So, through central lopsidedness angle θ 1 is made as acute angle,, also can further improve drainage performance, and improve anti-irregular wear property except the effect of above-mentioned inclination translot 3.If the lopsidedness angle θ of central authorities 1 surpasses 65 °, then outside major trough 2 one side ends of pattern block can become acute angle, thereby are easy to generate problem such as heel-and-toe wear, and anti-irregular wear property is with insufficient.On the other hand, if central lopsidedness angle θ 1 then can't fully improve drainage performance less than 40 °.
In addition, according to translot 3 tire circumferentially on the circumferential part of projection be present in the tire mode in full week, be positioned at the translot 3 of central major trough 1 tire width direction both sides in the configuration of upwards staggering in tire week.That is, shown in Fig. 3 instruction diagram, owing to the translot 3 that is positioned at central major trough 1 tire width direction both sides in the configuration of upwards staggering in week, so the circumferential part 3 ' of these translots 3 is upwards to stagger in week.So, in pattern block row, do not have the place of translot 3 circumferential parts 3 ', the translot 3 circumferential parts during another pattern block of configuration is listed as.Therefore, the circumferential part 3 ' of central major trough 1 tire width direction both sides complements each other, and repeats to link to each other on full week at tire.So, it is all entirely to be present in tire through circumferential part 3 ', the wetland performance in the time of can improving tyre rotation.The mode that staggers of translot 3 does not have special restriction, and preferred translot 3 is in the both sides of central major trough 1, in the half pitch that upwards staggers respectively in week.
As shown in Figure 4, it is to extend along tire width direction that the S of tire shoulder portion goes up the end tire shoulder pattern groove 4 that contains that is provided with.The circumferential tilt angle theta 3 of itself and tire is preferably in 90 ± 10 ° of scopes.In addition, the tire shoulder pattern groove 4 that is positioned on the S of tire width direction both sides tire shoulder portion can be with respect to the mutual reversal dip of tire equator E.So, be made as tire width direction, can guarantee strip decorative pattern rigidity, improve abrasion test through direction of tilt with tire shoulder pattern groove 4.If tilt angle theta 3 departs from 90 ± 10 ° of scopes, abrasion test is with insufficient.Here, tilt angle theta 3 is groove width line of centers and circumferential angulations of tire of tire shoulder pattern groove 4.
Surface through at pattern block 5 and strip decorative pattern 6 is provided with sipes per tire 7, can improve the wetland performance.Sipes per tire 7 preferably extends to the end of pattern block or strip decorative pattern.Through making sipes per tire 7 extend to the end of pattern block or strip decorative pattern, sipes per tire capable of using edge improves the wetland performance.The circumferential tilt angle theta 4 of sipes per tire 7 in pattern block and the strip decorative pattern and tire is all preferably in 90 ± 10 ° of scopes.Be made as in this scope through angle of inclination, can improve the wetland deceleration and stopping performance sipes per tire 7.Especially be located at the sipes per tire 7 on the strip decorative pattern 6 through prolonging, can remedy because of tire shoulder pattern groove 4 and outside major trough 2 and be not communicated with the bad wetland deceleration and stopping performance that causes along tire width direction.
Like Fig. 2 and shown in Figure 5, form the protruding stria 3a of portion in the end with the position that is communicated with of central major trough 1 at translot 3.The protruding stria 3a of portion in this end is that place's groove depth and groove width are all less than the part at translot 3 other positions.The length L 3a of the protruding stria 3a of portion in this end is made as 20～40% of translot 3 length L 3.In addition, the groove width W3a of the protruding stria 3a of portion in the end is made as 30～50% of translot 3 maximum groove width W3, and the groove depth D3a of the protruding stria 3a of portion in the end is made as 40～60% of central major trough 1 groove depth D1.Here, the length L 3 of translot 3 is the length of translot 3 from central major trough 1 one side ends major trough 2 one side ends to the outside.In addition, the length L 3a of the protruding stria 3a of portion in the end is the length between translot 3 and central major trough 1 one side ends.These all are the length along the groove width central line measurement.
As stated, form the protruding stria 3a of portion in the end through the position that is communicated with, and dwindle groove width W3a and the groove depth D3a of translot 3, can improve near the pattern block rigidity the protruding stria 3a of portion in the end, the inhibition irregular wear at translot 3 and central major trough 1.And, because having carried out the bottom simultaneously, raises and reduced width translot 3, therefore when improving the pattern block rigidity, can guarantee the connected state of translot 3 and central major trough 1.Therefore, through of the combined action of central major trough 1 with translot 3, but the well maintained drainage performance.
At this moment, be made as 20～40% of translot 3 length L 3, can suppress irregular wear, and can not reduce the snowfield road-holding property through length L 3a with the protruding stria 3a of portion in the end.If the length L 3a of the protruding stria 3a of portion in the end can't fully obtain to suppress the effect of improving of irregular wear less than 20% of translot 3 length L 3.On the contrary, the effect of snowfield road-holding property if the length L 3a of the protruding stria 3a of portion in the end greater than 40% of translot 3 length L 3, then can't fully be improved.
Translot 3 groove depth D3a through with the protruding stria in end portion 3a place are made as 40～60% of central major trough 1 groove depth D1, can suppress irregular wear, and can not reduce the snowfield road-holding property.If the ratio of the end protruding stria 3a of portion groove depth D3a and central major trough 1 groove depth D1 is less than 40%, though can obtain to improve the effect of anti-irregular wear property, the effect of can't fully be improved drainage performance and row's snow performance.On the contrary, if this ratio greater than 60%, then can't fully dwindle poor rigidity, the effect of the anti-irregular wear property that can't fully be improved.
Translot 3 groove width W3a through with the protruding stria in end portion 3a place are made as 30～50% of translot 3 maximum groove width W3, can suppress irregular wear, and can not reduce the snowfield road-holding property.If the ratio of the end protruding stria 3a of portion groove width W3a and translot 3 maximum groove width W3 is less than 30%, though can obtain to improve the effect of anti-irregular wear property, the effect of can't fully be improved drainage performance and row's snow performance.On the contrary, if this ratio greater than 50%, then not too big variation of pattern block rigidity, the effect of the anti-irregular wear property that can't fully be improved.
As shown in Figure 2, be made as tire shoulder lopsidedness angle θ 2 with what translot 3 was communicated with the place with outside major trough 2 with the circumferential angulation of tire.Preferred central lopsidedness angle θ 1 is littler relatively than tire shoulder lopsidedness angle θ 2.Thus, can improve the drainage performance of translot 3.Therefore, as stated,, also can keep drainage performance for after improving anti-irregular wear property the protruding stria 3a of portion in the end that translot 3 groove depths and groove width are dwindled being set.The lopsidedness angle θ 1 of central authorities is preferably 5～30 ° with the difference of tire shoulder lopsidedness angle θ 2.If this difference is less than 5 °, drainage performance can't improve.On the contrary, if this difference greater than 30 °, the pattern block rigidity will descend, and be difficult to suppress irregular wear.Here, tire shoulder lopsidedness angle θ 2 is groove width line of centers and circumferential angulations of tire of translot 3.
In the air-inflation tyre of the present invention, preferably on each tread of pattern block 5, configured in parallel is toward many fine grooves 8 of tire peripheral, oblique.These fine grooves 8 are minute grooves more shallow than sipes per tire 7.During new tire, owing to fail to bring into play the original characteristic of tread-rubber, so its ice and snow road rideability may not be abundant.Yet through this fine groove 8 is set, fine groove 8 capable of using is effectively removed the moisture film that produces between ice and snow road and the tread surface.Therefore, can improve the performance on ice and the snowfield performance at use initial stage.In addition, after on pattern block 5 treads fine groove 8 being set,, therefore also can obtain to make the effect that time of performance tread-rubber primary characteristic shortens to some extent because the existence of these fine grooves 8 will impel the tread surface cortex to come off.
As shown in Figure 6, the groove width w of fine groove 8 can be 0.1mm～0.8mm, and groove depth d can be 0.1mm～0.8mm.If the groove width w of fine groove 8 is less than 0.1mm, moisture film removal effect and row's snow performance improvement effect on the contrary, if greater than 0.8mm, then can reduce the pattern block rigidity with insufficient.In addition, if groove depth d less than 0.1mm, moisture film removal effect and row snow performance improvement effect on the contrary, if greater than 0.8mm, then can reduce the pattern block rigidity with insufficient.
The spacing p of fine groove 8 preferably is made as in 2.5～5.0mm scope.Be made as in this scope through spacing p, can avoid conscientiously that fine groove 8 is crushed when tire bears high load capacity fine groove 8.Therefore, under high-load condition, also can bring into play and improve the effect of performance and snowfield performance on ice.If the spacing p of fine groove 8 is less than 2.5mm, performance on ice under the high-load condition and snowfield performance improvement effect are with insufficient.On the contrary, if this spacing p greater than 5.0mm, moisture film is removed and to be improved effect with insufficient.
Like Fig. 4 and shown in Figure 7, preferably the one in the tire width direction inside edge of strip decorative pattern 6 forms a plurality of chamfered section 9 with chamfered edge amount this shape of cyclical variation on tire is circumferential at interval or continuously.Here, the chamfered edge quantitative changeization is meant along strip decorative pattern 6 circumferential, and the size of Width and depth direction changes.As shown in Figure 4, the maximum maximum chamfered section 9a of chamfered edge amount is a chamfered edge amount the best part on depth direction and Width, and minimum chamfered section 9b is the minimum part of chamfered edge amount on depth direction and Width.
To the shape of chamfered section 9, can increase edge length through making the cyclical variation on tire is circumferential of chamfered edge amount, excellent snowfield performance can be kept in the marginal portion that increase can play a role on braking and driving direction therefore.Chamfered section 9 can't increase edge length if the chamfered edge amount did not have to change in full week, complete impartial shape, thus the effect of the snowfield performance that can't fully be improved.
The depth D 9a of maximum chamfered section 9a and/or width W 9a in this chamfered section 9 can be 30～60% of outside major trough 2 extreme depth D2.Through being made as in this scope, can fully increase edge length, improve snow traction property.Be preferably 40～50% of outside major trough 2 extreme depth D2.If the depth D 9a of maximum chamfered section 9a and/or width W 9a can't discharge the power that is applied between tire shoulder pattern groove 4 and the outside major trough 2 less than 30% of outside major trough depth D 2, thereby the effect of the anti-irregular wear property that can't fully be improved.In addition, if the depth D 9a of maximum chamfered section 9a and/or width W 9a greater than 60% of outside major trough depth D 2, the pattern block rigidity will seriously reduce, thus the effect of the snowfield road-holding property that can't fully be improved.
The maximum chamfered section 9a of chamfered section 9 is as shown in Figure 4, and preferred disposition is in the extended line zone that contains end tire shoulder pattern groove 4.The extended line zone that contains end tire shoulder pattern groove 4 more is prone to concentrated stress than other zones in the strip decorative pattern 6, therefore through the maximum chamfered section 9a of configuration in this zone, reduces rigidity, can easily disperse concentrated stress, suppresses irregular wear.If depart from the extended line zone of tire shoulder pattern groove 4 when disposing maximum chamfered section 9a, the extended line zone of tire shoulder pattern groove 4 is easy concentrated stress, the effect of the anti-irregular wear property that can't fully be improved.
Chamfered section 9 is a unit with the spacing that contains end tire shoulder pattern groove 4, can per 0.5～2 spacing form 1 place.The spacing that contains end tire shoulder pattern groove 4 here, is meant and adjacent contains end tire shoulder pattern groove 4 at the interval that makes progress in tire week.The formation ratio of chamfered section 9 is if form 1 place with the interval less than 0.5 spacing, and then chamfered section 9 quantity are too much, will cause the pattern block rigidity seriously to reduce, the effect of the anti-irregular wear property that can't fully be improved.On the contrary, the formation ratio of chamfered section 9 is if form 1 place with the interval greater than 2 spacings, and then the edge part at strip decorative pattern 6 will form high rigidity position and low rigidity position, and poor rigidity increases, thus the effect of the anti-irregular wear property that can't fully be improved.
The JIS A type hardness tester of rubber under-10 ℃ that forms tyre surface is preferably 55～70.So, can improve anti-irregular wear property, and improve the snowfield performance.If hardness is lower than 55, the rigidity of pattern block and strip decorative pattern will descend, thus the effect of the anti-irregular wear property that can't fully be improved.If hardness surpasses 70, the effect of the snowfield performance that then can't fully be improved.Here, JIS A type hardness tester is meant the K6253 according to JIS, the hardness of using hardness meter (A type) under-10 ℃ of temperature conditions, to measure.
Air-inflation tyre of the present invention is preferably used as the light truck that under the above condition of air pressure 350kPa, uses and uses tire.
Instance
Make 11 kinds of air-inflation tyres of routine example 1, comparative example 1～2, instance 1～8, its tire size is all 195/75R16C, 107/105R, and different size is like table 1, shown in 2.
These 11 kinds of tire sets are installed on the wheel rim of 16 * 51/2J; Front-wheel pressurising 280kPa; Trailing wheel pressurising 450kPa; Produce on the lorry in the Europe that is mounted to 3.5 tons of Maximum Loading Capacitys then respectively, measures anti-irregular wear property, drainage performance, wetland road-holding property and snowfield road-holding property with following method.
Anti-irregular wear property
Behind the 4000km that goes on the pitchy road, the tire outward appearance is carried out visual assessment with above-mentioned vehicle.Assessment result is that index 100 is represented with the value of conventional example 1.This exponential quantity is more little, representes that anti-irregular wear property is good more.
Drainage performance
On the test road of the depth of water 10 ± 1mm, radius of rotation 100m, go the test vehicle moving velocity when maximum lateral acceleration appears in drawings with above-mentioned vehicle.Assessment result is that index 100 is represented with the value of conventional example 1.This exponential quantity is big more, and the expression drainage performance is good more.
The wetland road-holding property
Go on the wet and slippery test road in road surface with above-mentioned vehicle, in 0～100km/h speed range, road-holding property is carried out the sensory evaluation.Assessment result is that index 100 is represented with the value of conventional example 1.This exponential quantity is big more, and expression wetland road-holding property is good more.
The snowfield road-holding property
Go on the snow-up test road of road surface with above-mentioned vehicle, in 0～100km/h speed range, road-holding property is carried out the sensory evaluation.Assessment result is that index 100 is represented with the value of conventional example 1.This exponential quantity is big more, and expression snowfield road-holding property is good more.
Table 1
| Conventional example 1 | Comparative example 1 | Comparative example 2 | Instance 1 | Instance 2 | Instance 3 | |
| Translot is communicated with major trough | Do not have | Have | Do not have | Have | Have | Have |
| The lopsidedness angle θ of central authorities 1 (°) | 30 | 50 | 30 | 50 | 45 | 45 |
| Tire shoulder lopsidedness angle θ 2 (°) | 30 | 50 | 30 | 50 | 60 | 60 |
| Differential seat angle θ 2-θ 1 (°) | 0 | 0 | 0 | 0 | 15 | 15 |
| The end protruding stria portion | Do not have | Do not have | Do not have | Do not have | Do not have | Have |
| The width (%) of the end protruding stria portion | -- | -- | -- | -- | -- | 20 |
| The degree of depth (%) of the end protruding stria portion | -- | -- | -- | -- | -- | 30 |
| The circumferential part of translot | Discontinuous | Discontinuous | Discontinuous | Continuously | Continuously | Continuously |
| The tire shoulder shape | Pattern block | Pattern block | The strip decorative pattern | The strip decorative pattern | The strip decorative pattern | The strip decorative pattern |
| Tire shoulder pattern groove angle θ 3 (°) | 90 | 90 | 90 | 90 | 90 | 90 |
| Strip decorative pattern chamfered section | Do not have | Do not have | Do not have | Have | Have | Have |
| Fine groove | Do not have | Do not have | Do not have | Have | Have | Have |
| Sipes per tire angle θ 4 (°) | 90 | 90 | 90 | 90 | 90 | 90 |
| Anti-irregular wear sex index | 100 | 100 | 105 | 105 | 105 | 108 |
| The drainage performance index | 100 | 105 | 98 | 105 | 107 | 107 |
| Wetland operation stabilization sex index | 100 | 103 | 98 | 105 | 105 | 107 |
| Snowfield operation stabilization sex index | 100 | 103 | 98 | 105 | 105 | 105 |
Table 2
| Instance 4 | |
|
|
|
|
| Translot is communicated with major trough | Have | Have | Have | Have | Have |
| The lopsidedness angle θ of central authorities 1 (°) | 50 | 40 | 30 | 45 | 45 |
| Tire shoulder lopsidedness angle θ 2 (°) | 55 | 65 | 65 | 60 | 60 |
| Differential seat angle θ 2-θ 1 (°) | 5 | 25 | 35 | 15 | 15 |
| The end protruding stria portion | Have | Have | Have | Have | Have |
| The width (%) of the end protruding stria portion | 20 | 20 | 20 | 40 | 60 |
| The degree of depth (%) of the end protruding |
30 | 30 | 30 | 50 | 70 |
| The circumferential part of translot | Continuously | Continuously | Continuously | Continuously | Continuously |
| The tire shoulder shape | The strip decorative pattern | The strip decorative pattern | The strip decorative pattern | The strip decorative pattern | The strip decorative pattern |
| Tire shoulder pattern groove angle θ 3 (°) | 90 | 90 | 90 | 90 | 90 |
| Strip decorative pattern chamfered section | Have | Have | Have | Have | Have |
| Fine groove | Have | Have | Have | Have | Have |
| Sipes per tire angle θ 4 (°) | 90 | 90 | 90 | 90 | 90 |
| Anti-irregular wear sex index | 110 | 106 | 104 | 108 | 105 |
| The drainage performance index | 105 | 109 | 111 | 109 | 111 |
| Wetland operation stabilization sex index | 105 | 109 | 111 | 109 | 109 |
| Snowfield operation stabilization sex index | 105 | 105 | 105 | 107 | 107 |
By table 1,2 results can be clear and definite, the air-inflation tyre of instance 1～8 is compared with conventional example 1, snowfield road-holding property, wetland road-holding property and drainage performance all are improved, and can improve anti-irregular wear property.
On the other hand, can be clear and definite by table 1 result, therefore the air-inflation tyre of comparative example 1 can't improve anti-irregular wear property because tire shoulder portion is a pattern block.The air-inflation tyre of comparative example 2 is not because translot is communicated with central major trough, so wetland road-holding property and drainage performance decrease.
Claims (10)
1. air-inflation tyre; At at least 2 outside major troughs that are provided with the central major trough that circumferentially extends in tire equator upper edge tire on the tyre surface, circumferentially extend and many translots that between said central major trough and said outside major trough, extend and be communicated with said central major trough and said outside major trough along tire width direction in these central authorities major trough tire width direction both sides and along tire; Utilize these central major troughs, outside major trough and translot; Mark off a plurality of pattern blocks at central portion; The tire shoulder portion in the tire width direction of the major trough outside in the outermost outside is provided with the tire shoulder pattern groove that extends and be not communicated with this outermost outside major trough along tire width direction simultaneously, forms the strip decorative pattern in this tire shoulder portion; It is characterized in that
Said air-inflation tyre is the directivity decorative pattern; The said translot that is positioned at the tire width direction both sides with respect to said central major trough is with respect to the mutual reversal dip of tire equator; Said translot be communicated with the place with said central major trough with the circumferential angulation of tire be that central lopsidedness angle θ 1 is to be made as acute angle; Circumferential part according to the projection on tire is circumferential of said translot is present in the tire mode in full week simultaneously; Be positioned at the said translot of said central major trough tire width direction both sides in the configuration of upwards staggering in tire week, and on said pattern block and said strip decorative pattern, sipes per tire be set.
2. air-inflation tyre as claimed in claim 1; It is characterized in that; The position that is communicated with at said translot and said central major trough forms groove depth and the groove width end protruding stria portion less than other positions of said translot; The groove depth of protruding stria portion of the said end is made as 40～60% of said central major trough groove depth, and the groove width of the protruding stria in said end portion is made as 30～50% of the maximum groove width of said translot.
3. according to claim 1 or claim 2 air-inflation tyre is characterized in that, said central lopsidedness angle θ 1 more said translot be communicated with the place with said outside major trough with the circumferential angulation of tire be that tire shoulder lopsidedness angle θ 2 is littler relatively.
4. air-inflation tyre as claimed in claim 3 is characterized in that, said tire shoulder lopsidedness angle θ 2 is 5～30 ° with the difference of said central lopsidedness angle θ 1.
5. according to claim 1 or claim 2 air-inflation tyre is characterized in that said central lopsidedness angle θ 1 is 40～65 °.
6. according to claim 1 or claim 2 air-inflation tyre is characterized in that on the surface of said pattern block fine groove is set, the spacing of this fine groove is made as 2.5～5mm simultaneously, and the degree of depth is made as 0.1～0.8mm, and width is made as 0.1～0.8mm.
7. according to claim 1 or claim 2 air-inflation tyre is characterized in that, the portion in the tire width direction inside edge of said strip decorative pattern, at interval or continuously configuration have the chamfered edge amount tire circumferentially on a plurality of chamfered section of this shape of cyclical variation.
8. according to claim 1 or claim 2 air-inflation tyre is characterized in that, the circumferential tilt angle theta 3 of said tire shoulder pattern groove and tire is in 90 ± 10 ° of scopes.
9. according to claim 1 or claim 2 air-inflation tyre is characterized in that the JIS A type hardness tester of rubber under-10 ℃ that forms said fetus face is 55～70.
10. according to claim 1 or claim 2 air-inflation tyre is characterized in that said air-inflation tyre is that the light truck that under the above condition of air pressure 350kPa, uses is used tire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010127210A JP5141719B2 (en) | 2010-06-02 | 2010-06-02 | Pneumatic tire |
| JP2010-127210 | 2010-06-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102310723A true CN102310723A (en) | 2012-01-11 |
| CN102310723B CN102310723B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110157391.4A Active CN102310723B (en) | 2010-06-02 | 2011-06-02 | Pneumatic tire |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5141719B2 (en) |
| CN (1) | CN102310723B (en) |
| DE (1) | DE102011076813B4 (en) |
| FI (1) | FI125663B (en) |
| RU (1) | RU2469872C1 (en) |
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- 2011-06-01 RU RU2011122324/11A patent/RU2469872C1/en active
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| CN104271365A (en) * | 2012-06-27 | 2015-01-07 | 横滨橡胶株式会社 | Pneumatic tire |
| CN104271365B (en) * | 2012-06-27 | 2016-01-20 | 横滨橡胶株式会社 | Air-inflation tyre |
| CN103660802A (en) * | 2012-08-31 | 2014-03-26 | 韩国轮胎株式会社 | Tire with improved wet land holding force |
| US10882361B2 (en) | 2014-04-13 | 2021-01-05 | Bridgestone Americas Tire Operations, Llc | Tire with variable width grooves |
| CN107249906B (en) * | 2015-02-13 | 2019-08-13 | 大陆轮胎德国有限公司 | Pneumatic vehicle tire |
| CN107249906A (en) * | 2015-02-13 | 2017-10-13 | 大陆轮胎德国有限公司 | Pneumatic vehicle tire |
| CN108367627A (en) * | 2015-12-04 | 2018-08-03 | 大陆轮胎德国有限公司 | Pneumatic vehicle tire |
| CN110290937A (en) * | 2017-02-14 | 2019-09-27 | 横滨橡胶株式会社 | Pneumatic tire |
| US11590804B2 (en) | 2017-02-14 | 2023-02-28 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| CN108688410A (en) * | 2017-04-11 | 2018-10-23 | 住友橡胶工业株式会社 | Tire |
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| CN110893741B (en) * | 2018-09-13 | 2023-01-17 | 韩国轮胎与科技株式会社 | Pneumatic tire |
| CN113508041A (en) * | 2019-04-05 | 2021-10-15 | 米其林集团总公司 | Truck tire with circumferential groove having blind microgrooves |
| CN113508041B (en) * | 2019-04-05 | 2023-09-08 | 米其林集团总公司 | Truck tire with circumferential grooves with blind micro grooves |
| CN114222670A (en) * | 2019-08-21 | 2022-03-22 | 株式会社普利司通 | Tyre for vehicle wheels |
| CN114222670B (en) * | 2019-08-21 | 2024-04-19 | 株式会社普利司通 | Tire with a tire body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011251637A (en) | 2011-12-15 |
| FI20115538L (en) | 2011-12-03 |
| RU2011122324A (en) | 2012-12-10 |
| RU2469872C1 (en) | 2012-12-20 |
| JP5141719B2 (en) | 2013-02-13 |
| DE102011076813A1 (en) | 2011-12-08 |
| FI125663B (en) | 2015-12-31 |
| DE102011076813B4 (en) | 2016-01-07 |
| CN102310723B (en) | 2015-04-29 |
| FI20115538A0 (en) | 2011-06-01 |
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