CN105818615A - Pneumatic tyre - Google Patents
Pneumatic tyre Download PDFInfo
- Publication number
- CN105818615A CN105818615A CN201610011703.3A CN201610011703A CN105818615A CN 105818615 A CN105818615 A CN 105818615A CN 201610011703 A CN201610011703 A CN 201610011703A CN 105818615 A CN105818615 A CN 105818615A
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- Prior art keywords
- tire
- groove
- cutter groove
- oblique groove
- tyre surface
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- 210000003754 fetus Anatomy 0.000 claims description 54
- 238000005452 bending Methods 0.000 claims description 32
- 238000012360 testing method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- 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
- B60C11/0302—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
- B60C11/032—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
- 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
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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
- B60C2011/0386—Continuous ribs
- B60C2011/0388—Continuous ribs provided at the equatorial plane
-
- 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
- B60C2011/1209—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe straight at the tread surface
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention provides a pneumatic tyre which has good wet road performance and operation stability performance. In the pneumatic tyre (1), a tyre surface part (2) is provided with inclined channels (4) extending from the part close to a tyre equator (C) towards the rear landing side in the rotation direction (N) to a tyre surface end (Te); and cutter blades (5) communicated with the inclined channels (4) and extending along the axial direction of the tyre. Each inclined channel (4) comprises a line part (6) having an angle of 10-30 degrees relative to the circumferential direction of the tyre; and a bent part (7) enabling the increasing of the angle relative to the circumferential direction of the tyre while extending to the tyre surface end (Te). Each cutter blade (5) comprises a first cutter blade (11) communicating line parts (6, 6) of adjacent inclined channels (4) in the circumferential direction of the tyre; and a second cutter blade (12) communicating the line part (6)with the bent part (7) of adjacent inclined channels (4) in the circumferential direction of the tyre.
Description
Technical field
The present invention relates to play the pneumatic tire of excellent wet road performance and control stability.
Background technology
Be known to fetus face be provided with from tire equator towards land after direction of rotation side a plurality of oblique groove extended to tyre surface end and by each oblique groove between the pneumatic tire of a plurality of longitudinal furrow of connection.In this pneumatic tire, oblique groove, longitudinal furrow can utilize rolling of tire to be discharged to the outside of tyre surface end by the moisture film under the portion of land, therefore improve wet road performance.
But, longitudinal furrow easily makes the side earth-grasping force in land portion reduce, thus there is the problem being difficult to improve control stability.
Patent documentation 1: Japanese Unexamined Patent Publication 2011-189846 publication
Summary of the invention
The present invention makes in view of the above problems, and its main purpose is that it is basic for providing a kind of oblique groove to improve fetus face and cutter groove, improves wet road performance and the pneumatic tire of control stability.
The present invention provides a kind of pneumatic tire, it has the fetus face specifying direction of rotation, it is characterized in that, at above-mentioned fetus face, be respectively arranged with in each side of tire equator: towards side a plurality of oblique groove that extends to tyre surface end of landing after above-mentioned direction of rotation near tire equator or its；And the cutter groove connecting with above-mentioned oblique groove and extending along tire axial, each above-mentioned oblique groove includes: have the line part of the angle of 10～30 ° relative to tire circumference；And be connected with this line part and limit makes to be gradually increased, relative to the angle of tire circumference, the bending section that limit extends to tyre surface end, above-mentioned cutter groove includes: make the first cutter groove that the above-mentioned line part of above-mentioned oblique groove adjacent in tire circumference communicates with each other；And make the second cutter groove that the above-mentioned line part of above-mentioned oblique groove adjacent in tire circumference connects with above-mentioned bending section.
Pneumatic tire involved in the present invention is preferably, and is provided with in tire equator along the central main groove that extends of the circumferentially continuous ground of tire at above-mentioned fetus face, and each above-mentioned oblique groove is positioning away from the inner with tire axial from above-mentioned central main groove.
Pneumatic tire involved in the present invention is preferably, and the oblique groove of the side that lands after in above-mentioned oblique groove adjacent in tire circumference is carried out through and extends to above-mentioned central main groove by above-mentioned first cutter groove.
Pneumatic tire involved in the present invention is preferably, and the oblique groove of the side that lands after in above-mentioned oblique groove adjacent in tire circumference is carried out through and extends near tire equator by above-mentioned second cutter groove.
Pneumatic tire involved in the present invention is preferably, and the oblique groove of the side that first lands in above-mentioned oblique groove adjacent in tire circumference is carried out through and extends to tyre surface end by above-mentioned first cutter groove.
Pneumatic tire involved in the present invention is preferably, and above-mentioned first cutter groove continuously or extends to the tyre surface end of the opposing party via other ditch from the tyre surface end of a side along tire axial.
Pneumatic tire involved in the present invention is preferably, and above-mentioned second cutter groove continuously or extends to the tyre surface end of the opposing party via other ditch from the tyre surface end of a side along tire axial.
Pneumatic tire involved in the present invention is preferably, and the above-mentioned oblique groove of the side of tire equator connects in tire equator with the oblique groove of the opposite side of tire equator.
Pneumatic tire involved in the present invention is preferably, and the above-mentioned oblique groove of the side of tire equator misplaces in tire circumference with the oblique groove of the opposite side of tire equator.
Pneumatic tire involved in the present invention is preferably, and above-mentioned first cutter groove includes: from tyre surface end to the Part I extended inside tire axial；And it is configured at the Part II less than the position of above-mentioned Part I more roller tire axially inner side and the above-mentioned Part I of width ratio.
At the airtyred fetus face of the present invention, it is respectively arranged with in each side of tire equator near tire equator or its towards side a plurality of oblique groove that extends to tyre surface end of landing after direction of rotation.Such oblique groove utilizes rolling of tire to be discharged to the outside of tyre surface end by the moisture film under the portion of land, therefore improves wet road performance.
Each oblique groove includes: have the line part of the angle of 10～30 ° relative to tire circumference；And be connected with this line part and limit makes to be gradually increased, relative to the angle of tire circumference, the bending section that limit extends to tyre surface end.Such line part is when keeping straight on traveling, it is possible to reduces resistance of water drainage and also effectively gathers moisture film.It addition, bending section improves the lateral stiffness of the tyre surface side in land portion, thus improve control stability.
When travelling when keeping straight on, act in the land portion of tire equator side and have big earth contact pressure.It addition, when turning driving, act in the land portion of tyre surface side and have big cross force.Therefore, when craspedodrome on wet road surface travels and during turning driving, the water in oblique groove is made to be effectively discharged out from line part and bending section.Therefore, wet road performance is improved further.
It addition, be respectively arranged with the cutter groove connecting with oblique groove and extending along tire axial in each side of tire equator.Such cutter groove produces the flexure in land portion and improves the ground connection property (earth-grasping force) with road surface, thus improves control stability.
Cutter groove includes: make the first cutter groove that the line part of oblique groove adjacent in tire circumference communicates with each other；And make the second cutter groove that the line part of oblique groove adjacent in tire circumference connects with bending section.That is, cutter groove is arranged along tire with being circumferentially separated, and therefore produces the flexure in land portion in whole tire circumference.Therefore, improve the ground connection property in land portion and road surface further, thus improve control stability further.
Making the second cutter groove that line part connects with bending section, compared with the first cutter groove making line part communicate with each other, the length of tire axial is big.Therefore, the second cutter groove can produce bigger flexure.It addition, bending section is connected by the second cutter groove, therefore it is arranged at than the first cutter groove position that more roller tire is axially external.Thus, more improve the earth-grasping force of the tire axial Outboard Sections in land portion, thus improve control stability further.
Therefore, in the pneumatic tire of the present invention, include the oblique groove of line part and bending section by setting and include the cutter groove of the second cutter groove that the first cutter groove making line part communicate with each other connects with by line part and bending section such that it is able to playing excellent wet road performance and control stability.
Accompanying drawing explanation
Fig. 1 is the expanded view of the airtyred fetus face of first embodiment of the present invention.
Fig. 2 is the expanded view of the airtyred fetus face of first embodiment of the present invention.
Fig. 3 is the expanded view of the airtyred fetus face of second embodiment of the present invention.
Fig. 4 is the expanded view of the airtyred fetus face of third embodiment of the present invention.
Fig. 5 is the expanded view of the airtyred fetus face of the 4th embodiment of the present invention.
Fig. 6 is the expanded view of the airtyred fetus face of the 5th embodiment of the present invention.
Fig. 7 is the expanded view of the airtyred fetus face of the 6th embodiment of the present invention.
Fig. 8 is the expanded view of the airtyred fetus face of comparative example.
Fig. 9 is the expanded view of the airtyred fetus face of other comparative examples.
The explanation of reference
1... pneumatic tire；2... fetus face；4... oblique groove；5... cutter groove；6... line part；7... bending section；11... the first cutter groove；12... the second cutter groove；N... direction of rotation；Te... tyre surface end.
Detailed description of the invention
Hereinafter, based on accompanying drawing, one embodiment of the present invention is illustrated.
Fig. 1 is the expanded view of the fetus face 2 of the pneumatic tire 1 of first embodiment of the present invention.The pneumatic tire (following, sometimes referred to simply as " tire ") 1 of present embodiment is such as suitable as the tire of four-wheel racing car and is used.This tire 1 specifies direction of rotation N.Direction of rotation N is such as shown in sidewall (not shown) by word or symbol.
Fetus face 2 at the tire 1 of present embodiment is provided with a tap drain 3；It is respectively arranged at a plurality of oblique groove 4 of each side of tire equator C；And a plurality of cutter groove 5 connected with each oblique groove 4.
The tap drain 3 of present embodiment in tire equator C along tire circumferentially continuous extend.Such tap drain 3 is effectively discharged out being difficult to most the moisture film in the land portion near tire equator C of draining, therefore improves wet road performance.
Tap drain 3 extends with linearity.Such tap drain 3 improves the rigidity in the land portion near tap drain 3, the unstable behavior such as the rocking of vehicle during suppression braking, sideslip, thus improves control stability.Additionally, the shape of tap drain 3 is not limited to linearity, such as, can also be zigzag, corrugated.
The oblique groove 4 of present embodiment near tire equator C towards landing side extending to tyre surface end Te after direction of rotation N.Such oblique groove 4 utilizes the rolling of tire, is discharged to the outside of tyre surface end Te by the moisture film under the portion of land, therefore improves wet road performance.
Above-mentioned " tyre surface end " Te is defined as being assembled in regular wheel rim and being filled with the tire under regular intrinsic pressure non-loaded normal state, the earthing position that roller tire is axially external when loading regular load and make it be grounded on the regular load load condition of plane with the camber angle of 0 degree.Under normal state, the distance of the tire axial between tyre surface end Te, Te is defined as tyre surface ground connection width TW.In the case of not particularly pointing out, the size etc. in each portion of tire is the value measured under this normal state.
" regular wheel rim " is the wheel rim determining this specification under the schematism including the specification include tire institute foundation according to each tire, in the case of JATMA it is such as " standard rim ", it is " DesignRim " in the case of TRA, is " MeasuringRim " in the case of ETRTO.
" regular intrinsic pressure " is the air pressure determining each specification under the schematism including the specification include tire institute foundation according to each tire, it is " high-altitude air pressure " in the case of JATMA, maximum described in form " TIRELOADLIMITSATVARIOUSCOLDINFLATIONPRESSURES " in the case of TRA, in the case of ETRTO be " INFLATIONPRESSURE ".At tire in the case of the car, regular intrinsic pressure be 180kPa.At tire in the case of the racing car, regular intrinsic pressure be 100kPa.
" regular load " is the load determining each specification under the schematism including the specification include tire institute foundation according to each tire, in the case of JATMA it is " maximum load capability ", maximum described in form " TIRELOADLIMITSATVARIOUSCOLDINFLATIONPRESSURES " in the case of TRA, in the case of ETRTO be " LOADCAPACITY ".At tire in the case of the car, be comparable to above-mentioned load 88% load.At tire in the case of racing car, regular load is 392N.
In the present embodiment, oblique groove 4 has and does not connects with tap drain 3 and form the inner 4e of the tire axial of terminal.Such oblique groove 4 suppresses the rigidity in the land portion near tap drain 3 to reduce, and therefore maintains high by control stability, abrasion resistance properties.Additionally, in the case of the inner 4e of oblique groove 4 and tire axial distance La of tap drain 3 are big, wet road performance probably can be made to be deteriorated.Therefore, above-mentioned tire axial distance La is preferably the 5%～10% of tyre surface ground connection width TW.
Each oblique groove 4 includes: the line part 6 extended with linearity；And the bending section 7 being connected with this line part 6 and extending to tyre surface end Te.When travelling when keeping straight on, act in the land portion of tire equator C side and have big earth contact pressure.It addition, when turning driving, act in the land portion of tyre surface end Te side and have big cross force.Therefore, when craspedodrome on wet road surface travels and during turning driving, the water in oblique groove 4 is made to be effectively discharged out from line part 6 and bending section 7.Therefore, wet road performance is improved further.
Line part 6 has the angle, θ 1 of 10～30 ° relative to tire circumference.In the case of the angle, θ 1 of line part 6 is less than 10 degree, it is impossible to effectively gather the moisture film under the portion of land at whole tire axial, thus wet road performance cannot be improved.In the case of the angle, θ 1 of line part 6 is more than 30 degree, when travelling when keeping straight on, the resistance of water drainage of line part 6 becomes big, it is impossible to improve wet road performance.
Line part 6 such as extends with constant width.The rigidity in the land portion near line part 6 is maintained high by such line part 6, therefore plays excellent control stability, abrasion resistance properties.Line part 6 is not limited to such mode, such as, can also be that ditch width tends to tyre surface end Te side and the mode that is gradually increased.
Bending section 7 limit makes to be gradually increased limit relative to the angle, θ 2 of tire circumference and extends to tyre surface end Te.Such bending section 7 improves the lateral stiffness in the land portion of tyre surface end Te side, therefore improves control stability.It addition, the tire axial rigidity ladder that bending section 7 reduces the land portion near bending section 7 is poor, therefore improve abrasion resistance properties, control stability.
From the viewpoint of effectively playing above-mentioned effect, the angle, θ 2 relative to tire circumference of bending section 7 is preferably more than 60 degree on tyre surface end Te, more preferably more than 70 degree.
Bending section 7 is smoothly connected with line part 6.Thus, maintain little by poor for the rigidity ladder in the land portion near bending section 7 and the connecting portion of line part 6, thus improve abrasion resistance properties, control stability." smoothly connect " and refer to the mode that the ditch centrage 7c of bending section 7 is connected the most across with the ditch centrage 6c of line part 6.
In the present embodiment, oblique groove 4B of the opposite side (for left side in Fig. 1) of oblique groove 4A of the side (being right side in Fig. 1) of tire equator C and tire equator C misplaces in tire circumference.Thus, the rigidity ladder difference of tire axial diminishes in whole tire circumference, therefore improves control stability, abrasion resistance properties.Oblique groove 4B of oblique groove 4A Yu opposite side in order to effectively further play this effect, preferably side misplaces half pitch in tire circumference.
In order to balancedly improve control stability and wet road performance, the ditch width W1 of the tap drain 3 and ditch width W2 of oblique groove 4 is preferably the 4%～15% of tyre surface ground connection width TW, more preferably the 6%～10% of tyre surface ground connection width TW.It addition, the trench depth of tap drain 3 and oblique groove 4 (omitting diagram) is 4～about 10mm.
In the present embodiment, cutter groove 5 extends along tire axial.The tire axial rigidity in the land portion near cutter groove 5 is maintained high by such cutter groove 5, thus produces big side earth-grasping force.It addition, cutter groove 5 produces the flexure in land portion and improves the ground connection property (earth-grasping force) with road surface, improve control stability the most further.In order to effectively play this effect, the angle, θ 3 relative to tire axial of cutter groove 5 is preferably less than 5 degree, more preferably 0 degree.
Cutter groove 5 extends with linearity.The tire axial rigidity in the land portion near cutter groove 5 is maintained get Geng Gao by such cutter groove 5.Additionally, cutter groove 5 is not limited to such mode, can be corrugated, it is also possible to be zigzag.
Cutter groove 5 includes: make the first cutter groove 11 that the line part 6,6 of oblique groove 4,4 adjacent in tire circumference communicates with each other；And make the second cutter groove 12 that the line part 6 of oblique groove 4,4 adjacent in tire circumference connects with bending section 7.Cutter groove 5 is arranged along tire with being circumferentially separated, and therefore makes the spacing of the flexure in land portion diminish.Therefore, improve the ground connection property in land portion and road surface further, thus improve control stability further.
It addition, the second cutter groove 12 connected with bending section 7 by line part 6, compared with the first cutter groove 11 communicated with each other by line part 6,6, the length of tire axial is big.Therefore, the second cutter groove 12 can produce the flexure bigger than the first cutter groove 11.Further, since bending section 7 is connected, so the tire axial rigidity ladder difference near the second cutter groove 12 is ensured little.Thus, more improve the earth-grasping force of the tire axial Outboard Sections in land portion, thus improve control stability further.
First cutter groove 11 of present embodiment includes: the first pars intermedia 15；It is configured at the first central part 16 than the first pars intermedia 15 more roller tire axially inner side；And it is configured at first shoulder portion 17 more axially external than the first pars intermedia 15 more roller tire.
In the present embodiment, the line part 6,6 of oblique groove 4,4 adjacent in tire circumference is connected to each other by the first pars intermedia 15.In the present embodiment, tap drain 3 is connected with line part 6 and is smoothly connected with the first pars intermedia 15 via line part 6 by the first central part 16.In the present embodiment, tyre surface end Te is connected with line part 6 and is smoothly connected with the first pars intermedia 15 via line part 6 by the first shoulder portion 17.
So, the first cutter groove 11 extends between tap drain 3 and tyre surface end Te via oblique groove 4,4 adjacent in tire circumference.Thus, produce the first pars intermedia the 15, first central part 16 and flexure of the first shoulder portion 17 simultaneously, thus utilize the resonance effect of above-mentioned flexure to improve the ground connection property with road surface further.Above-mentioned " smoothly connecting " is the mode in the imagining center line 15e instigating the width centreline 15c of the first pars intermedia 15 to extend inside and outside tire axial is arranged on the first central part 16 or in the first shoulder portion 17.
In the present embodiment, length L1 of the tire axial of the first pars intermedia 15 is bigger than length L2 of the tire axial of the first central part 16.It addition, length L1 of the first pars intermedia 15 is less than length L3 of the tire axial of the first shoulder portion 17.I.e., in the present embodiment, the length being configured at the cutter groove outside tire axial is bigger than the length of the cutter groove being configured at inside tire axial.Thus, compared with the tire axial inboard portion in land portion, it is possible to the flexure making the tire axial Outboard Sections in land portion is big, is therefore improved particularly control stability.Additionally, in the case of length L3 of the first shoulder portion 17 is excessive, probably cannot effectively make the tire axial inboard portion of fetus face 2 bend.From this point of view, length L2 of the first central part 16 be preferably the first pars intermedia 15 length L1 60%～90%.Length L1 of the first pars intermedia 15 is preferably the 50%～80% of length L3 of the first shoulder portion 17.
As in figure 2 it is shown, in the present embodiment, the first cutter groove 11 includes: Part I 18；And the Part II 19 that width ratio Part I 18 is little.The Part I 18 of present embodiment extends inside tire axial from tyre surface end Te.Such Part I 18 increases the flexure of the tire axial Outboard Sections in land portion further, thus improves earth-grasping force.
First cutter groove 11 has: the first cutter groove 11A of the side of tire equator C；And the first cutter groove 11B of the opposite side of tire equator C.In the present embodiment, the first cutter groove 11A of side and the first cutter groove 11B of opposite side extend to the tyre surface end Te of the opposing party via tap drain 3 and oblique groove 4A of both sides, 4B from the tyre surface end Te of a side.The inside and outside generation at tire axial of such first cutter groove 11 and the flexure on road surface, thus improve ground connection property further.First cutter groove 11A of the side of present embodiment and the first cutter groove 11B of opposite side misplaces in tire circumference.
In the case of the width W3 of Part I 18 is excessive, the rigidity in the land portion near tyre surface end Te reduces, and control stability probably can be made to be deteriorated.Therefore, the width W3 of Part I 18 is preferably more than the 2% of tyre surface ground connection width TW, more preferably more than the 2.5% of tyre surface ground connection width TW, and is preferably the 5% of not enough tyre surface ground connection width TW, the 4.0% of the most not enough tyre surface ground connection width TW.From the viewpoint of identical, length L4 of the tire axial of Part I 18 is preferably less than length L3 of the first shoulder portion 17, more preferably the 3%～8% of tyre surface ground connection width TW.It addition, the degree of depth of Part I 18 is preferably the 65%～100% of the trench depth of tap drain 3.The width W4 of Part II 19 is preferably the 25%～90% of the width W3 of Part I 18.
Second cutter groove 12 includes: second fetus shoulder 20；And it is configured at the second central part 21 than second fetus shoulder 20 more roller tire axially inner side.The line part 6 of oblique groove 4,4 adjacent in tire circumference is connected by second fetus shoulder 20 with bending section 7.Tap drain 3 is connected with line part 6 and is smoothly connected with second fetus shoulder 20 via line part 6 by the second central part 21.Above-mentioned " smoothly connecting " is the mode that the imagining center line 20e instigating the width centreline 20c of second fetus shoulder 20 to extend inside and outside tire axial is arranged in the second central part 21.
Second cutter groove 12 is formed with equal in width.Its bending section 7 making second fetus shoulder 20 big with width ratio cutter groove 5 is connected.Therefore, the second cutter groove 12 suppresses the rigidity of the tyre surface end Te side in land portion excessively to reduce, thus without arranging the wide Part I of width 18 as the first cutter groove 11.
Length L5 of the tire axial of second fetus shoulder 20 is bigger than length L6 of the tire axial of the second central part 21.Thus, the length being configured at the cutter groove outside tire axial is bigger than the length of the cutter groove being configured at inside tire axial such that it is able to the flexure making the tire axial Outboard Sections of fetus face 2 is big.Length L5 of the tire axial of the second central part 21 is preferably the 85%～97% of length L4 of the tire axial of second fetus shoulder 20.
Second cutter groove 12 has: the second cutter groove 12A of the side of tire equator C；And the second cutter groove 12B of the opposite side of tire equator C.In the present embodiment, the second cutter groove 12A of side and the first cutter groove 11B of opposite side is arranged in tire equator C position identical in tire circumference.It addition, the first cutter groove 11A of the second cutter groove 12B of opposite side and side is arranged in tire equator C position identical in tire circumference.Thus, the tire axial rigidity in the land portion near cutter groove 5 realizes equalization in whole tire circumference.
Though limiting the most especially, but the width W5 of the second cutter groove 12 is preferably more than the 1% and the 5% of not enough tyre surface ground connection width TW of tyre surface ground connection width TW, the 4.0% of the most not enough tyre surface ground connection width TW.The degree of depth (omitting diagram) of the second cutter groove 12 is preferably the 50%～100% of the trench depth of tap drain 3.
Utilize such tap drain 3, oblique groove 4 and cutter groove 5, fetus face 2 is divided into center running lug shape portion 23, is configured at the middle pattern block shape portion 24 more axially external than center running lug shape portion 23 more roller tire and is configured at the pattern block on tire shoulder shape portion 25 more axially external than middle pattern block shape portion 24 more roller tire.
The first central part 16 and the first pars intermedia 15 that the first central part 16 that center running lug shape portion 23 is inclined by the line part 6 of ditch 4, tap drain 3 connects with line part 6 connects with the line part 6 of the side that lands after above-mentioned line part 6 divide.The center running lug shape portion 23 of the present embodiment width Wa in tire axial lands side and is gradually increased approximate trapezoid shape after tending to direction of rotation N.Such center running lug shape portion 23 make with when entering into of decorative pattern block portion, pedal out time deformation and the flexure that produces is easy, therefore improve the ground connection property with road surface.
Middle pattern block shape portion 24 is divided by oblique groove adjacent in tire circumference 4,4, second fetus shoulder 20 and the first pars intermedia 15.The middle pattern block shape portion 24 of the present embodiment width Wb in tire axial lands side and is gradually increased approximate trapezoid shape after tending to direction of rotation N.Such middle pattern block shape portion 24 can play the action effect identical with above-mentioned center running lug shape portion 23.
So, when travelling when keeping straight on, having the center running lug shape portion 23 and middle pattern block shape portion 24 arranged inside the tire axial of big earth contact pressure in effect, the width of its tire axial increases towards the side that lands after direction of rotation N.Thus, the land portion inside tire axial, it is possible to be effectively improved the ground connection property with road surface, thus improve control stability.
The width Wb of the tire axial in middle pattern block shape portion 24 is preferably the 5%～20% of tyre surface ground connection width TW, more preferably the 8%～15% of tyre surface ground connection width TW.In the case of the width Wb in middle pattern block shape portion 24 is little, the tire axial rigidity in middle pattern block shape portion 24 diminishes, and the transverse grip probably can be made to diminish.In the case of width Wb in middle pattern block shape portion 24 is big, the ditch width of oblique groove 4 diminishes, and wet road performance probably can be made to be deteriorated.
Pattern block on tire shoulder shape portion 25 is divided by oblique groove adjacent in tire circumference 4,4, tyre surface end Te and second fetus shoulder 20.Length Lc of the tire circumference in the pattern block on tire shoulder shape portion 25 of present embodiment tends to be gradually increased outside tire axial.The tire rigid circumference in such pattern block on tire shoulder shape portion 25 tends to tyre surface end Te side and becomes big, therefore suppresses the deformation of the bending section 7 caused by earth contact pressure, and maintains greatly by its ditch width.Therefore, excellent wet road performance is played.
It addition, the fetus face 2 of the tire 1 in present embodiment, in addition to tap drain 3 and oblique groove 4, it is not provided with other ditch.Therefore, the rigidity of suppression fetus face 2 is greatly reduced.It addition, by arranging connection between oblique groove 4,4 the cutter groove 5 along tire axial extension, thus can either the rigidity of the tire axial of fetus face 2 be maintained high, the land portion surrounded by tap drain 3, oblique groove 4 and cutter groove 5 can be made again to produce flexure.Thus, improve the ground connection property in land portion and road surface, thus improve control stability.Additionally, in this manual, ditch refer to ditch width more than the 4.0% of tyre surface ground connection width TW otch, cutter groove refers to the otch of the 4.0% of short of width tyre surface ground connection width TW.
Fetus face 2 is divided into a pair shoulder zone Sh, Sh, is configured at a pair zone line Mi, Mi inside the tire axial of shoulder zone Sh and the middle section Ce being arranged between zone line Mi, Mi.Shoulder zone Sh be from each tyre surface end Te towards inside tire axial for tyre surface ground connection width TW 1/6 region.Zone line Mi be the tire axial from each shoulder zone the inner towards inside tire axial for tyre surface ground connection width TW 1/6 region.
It is big that such shoulder zone Sh, zone line Mi and middle section Ce are preferably the land ratio of the shoulder zone Sh land ratio than zone line Mi, and the land ratio that the land ratio of zone line Mi is than middle section Ce is big.That is, when turning driving, the land portion outside tire axial, effect has the cross force that the land portion inside than tire axial is big.Therefore, by improving the land ratio in each region as described above, thus control stability is improved.
In order to balancedly improve the turning driving on wet road surface and the stability travelled of keeping straight on, the land ratio of shoulder zone Sh is preferably 50%～90%.The land ratio of zone line Mi is preferably 45%～80%.The land ratio of middle section Ce is preferably 30%～70%.The land ratio in each region is the ratio (Mb/Ma) that whole surface area Mb and the imaginary surface filling up the imaginary tread being arranged at the whole ditch in each region, cutter groove gained of the tread in each region amasss Ma.
Fig. 3 is the expanded view of the fetus face 2 of the second embodiment.Wherein, for the structure identical with the structure shown in Fig. 1, the description thereof will be omitted.In this second embodiment, oblique groove 4A of the side of tire equator C does not misplaces with oblique groove 4B of the opposite side of tire equator C in tire circumference.Such oblique groove 4 makes the tire axial rigidity of the fetus face 2 of the both sides of clamping tire equator C equalize in whole tire circumference, the craspedodrome stability being therefore improved particularly on wet road surface.
In this second embodiment, the first pars intermedia 15 and first shoulder portion 17 of the first cutter groove 11 misplaces in tire circumference.Thus, the tire axial rigidity ladder differential making the whole tire circumference in land portion is closely uniform, therefore improves abrasion resistance properties.Wherein, " the first pars intermedia 15 of the first cutter groove 11 and the first shoulder portion 17 misplace in tire circumference " refers to that the imagining center line 15e (shown in Fig. 1) of the first pars intermedia 15 is not disposed on the mode in the first shoulder portion 17.
In this second embodiment, second fetus shoulder 20 and second central part 21 of the second cutter groove 12 misplaces in tire circumference.Thus, above-mentioned effect is effectively played.
Fig. 4 is the expanded view of the fetus face 2 of the 3rd embodiment.Wherein, for the structure identical with the structure shown in Fig. 1, the description thereof will be omitted.In the third embodiment, oblique groove 4A of the side of tire equator C does not misplaces with oblique groove 4B of the opposite side of tire equator C in tire circumference, but is connected in tire equator C.That is, oblique groove 4A of two sides and 4B form the Yi Tiaogou being connected by the tyre surface end Te of a side with the tyre surface end Te of the opposing party.Moisture film in tire equator C is also discharged by such oblique groove 4 to tyre surface end Te side.
In the fetus face 2 of the 3rd embodiment, it is not disposed in tire equator C the tap drain 3 extended.Therefore, when travelling when keeping straight on, effect have the rigidity in the land portion in tire equator C of big earth contact pressure ensure greatly, thus the craspedodrome stability being improved particularly on wet road surface.
In the fetus face 2 of the 3rd embodiment, the first cutter groove 11 includes: the first landing part 11S of the first of the side that first lands of direction of rotation N；And after the first of the side that more posteriorly lands than the first first landing part 11S portion 11T.Such fetus face 2 produces the flexure in land portion further.
First first landing part 11S is by the first pars intermedia 30A being connected to each other by the line part 6,6 of oblique groove 4 and is configured at first shoulder portion 30B more axially external than first pars intermedia 30A more roller tire and is formed.First pars intermedia 30A is smoothly connected via oblique groove 4 with first shoulder portion 30B.
After first portion 11T formed than the rear central part 31B of rear pars intermedia 31A more roller tire axially inner side by the rear pars intermedia 31A that the line part 6,6 of oblique groove 4 is connected to each other and being configured at.Rear central part 31B will connect between the line part 6,6 of the oblique groove 4 of the both sides of tire equator C, and is smoothly connected with the rear pars intermedia 31A of both sides via line part 6.Such rear central part 31B makes effect have the flexure in the land portion in tire equator C of big earth contact pressure to increase, thus improves the ground connection property with road surface.
Fig. 5 is the expanded view of the fetus face 2 of the 4th embodiment.Wherein, for the structure identical with the structure shown in Fig. 1, the description thereof will be omitted.In the 4th embodiment, between first central part 16 and the second central part 21 of the second cutter groove 12 of the first cutter groove 11, it is provided with the 3rd central authorities' cutter groove 35 being connected by tap drain 3 with oblique groove 4.Such 3rd central authorities' cutter groove 35 makes land portion bend further, thus improves control stability.
In the fetus face 2 of the 4th embodiment, first cutter groove the 11, second cutter groove 12 of each side of tire equator C and the 3rd central authorities' cutter groove 35 misplace in tire circumference.Thus, the tire axial rigidity of fetus face 2 is all upwardly close to equilibrium at whole tire.
Fig. 6 is the expanded view of the fetus face 2 of the 5th embodiment.Wherein, for the structure identical with the structure shown in Fig. 1, the description thereof will be omitted.In the manner, the first cutter groove 11 is only made up of with the first central part 16 the first pars intermedia 15.It addition, the second cutter groove 12 is only made up of second fetus shoulder 20.The rigidity in the land portion inside tire axial is maintained high by such fetus face 2, thus the craspedodrome stability being improved particularly on wet road surface.
In the fetus face 2 of the 5th embodiment, be provided with a plurality of circular arc ditch 37, its from tyre surface end Te towards extending inside tire axial and to the side that first lands of direction of rotation N with arc-shaped and not connecting with other ditch, cutter groove and form terminal.Such circular arc ditch 37 improves wet road performance.
Fig. 7 is the expanded view of the fetus face 2 of the 6th embodiment.Wherein, for the structure identical with the structure shown in Fig. 1, the description thereof will be omitted.In the 6th embodiment, the second cutter groove 12 includes: be arranged at the second first cutter groove 39 of the side that first lands of direction of rotation N；And be arranged at than the second first cutter groove 39 more posteriorly land side second after cutter groove 41.Second first cutter groove 39 is made up of than the second first central part 39B of the second first shoulder portion 39A more roller tire axially inner side first shoulder portion 39A of second be connected with line part 6 by bending section 7 and being arranged at.After second, by shoulder portion 41A after second be connected with line part 6 by bending section 7 and after being arranged at than second, central part 41B is constituted cutter groove 41 after the second of shoulder portion 41A more roller tire axially inner side.In such 6th embodiment, it is also possible to a large amount of flexures produced with road surface, thus more improve control stability.
In the 6th embodiment, outside the tire axial of the first cutter groove 11, it is provided with the counter drain that the ditch width extended parallel to tire axial is big.Such counter drain improves wet road performance.
Above, embodiments of the present invention are had been described in detail, but the present invention is not limited to embodiment illustrated, also certainly be able to be deformed into various mode and implement.
Embodiment
Specification based on table 1 manufactures experimently the four-wheel racing tire with the motif shown in Fig. 1, and Bing Duishi road earth-catching property, control stability and abrasion resistance properties are tested.Each examination is as follows for the main common-use size of tire, method of testing.
Tyre surface ground connection width TW:85mm (front-wheel), 105mm (trailing wheel)
Tap drain, the trench depth of oblique groove: 5.0mm
The width W4 of Part II and the width W5:2% (with the ratio of tyre surface ground connection width TW) of the second cutter groove
Angle, θ 2:70 degree on the tyre surface end Te of bending section
＜ wet road earth-catching property ＞
Under the following conditions each examination is installed on for tire all wheels of the four-wheel racing car of capacity 100cc, test driver makes this racing car at the test running on track of the moist bituminous paving of depth of water 5mm, and is evaluated the ride characteristic relevant with wet road earth-grasping force now according to the sense organ of test driver.Result is 5 in order to the tire of embodiment 1, represents with the scoring that tire is 1 of comparative example 3.Numerical value is the bigger the better.
＜ front-wheel ＞
Size: 10 × 4.50-5
Wheel rim: 4.5
Intrinsic pressure: 100kPa
＜ trailing wheel ＞
Size: 11 × 6.50-5
Wheel rim: 6.5
Intrinsic pressure: 100kPa
＜ running time (control stability) ＞
Test driver makes above-mentioned racing car at the test running on track seven weeks of the dried asphalt road that a week is 734m.5 point-scores of running time fractionation are represented by result in order to following evaluation methodology.Numerical value is the bigger the better.
1: more than+2.5 seconds the fastest time
2: more than+1.5 seconds the fastest time, less than 2.5 seconds
3: more than+0.5 second the fastest time, less than 1.5 seconds
4: more than+0.1 second the fastest time, less than 0.5 second
5: the fastest time+less than 0.1 second
＜ abrasion resistance properties ＞
After above-mentioned timing test terminates, the abrasion (fretting wear) of the burr shape on the surface of test driver observation fetus face.5 methods of state of wear fractionation are represented by result in order to following evaluation methodology.Numerical value is the bigger the better.
1: create great fretting wear.
2: create the fretting wear of moderate.
3: create slight fretting wear.
4: occur producing the sign of fretting wear.
5: the most do not produce fretting wear.
The result of test is shown in table 1.
Table 1
Test as a result, it is possible to understand that the tire of embodiment, compared with the tire of comparative example, balancedly improves wet road performance and control stability.It addition, change tire size to carry out identical test, but show the trend identical with this test result.
Claims (10)
1. a pneumatic tire, it has the fetus face specifying direction of rotation,
It is characterized in that,
At described fetus face, it is respectively arranged with in each side of tire equator: towards side a plurality of oblique groove that extends to tyre surface end of landing after described direction of rotation near tire equator or its；And the cutter groove connecting with described oblique groove and extending along tire axial,
Each described oblique groove includes: have the line part of the angle of 10～30 ° relative to tire circumference；And be connected with this line part and limit makes to be gradually increased, relative to the angle of tire circumference, the bending section that limit extends to tyre surface end,
Described cutter groove includes: make the first cutter groove that the described line part of described oblique groove adjacent in tire circumference communicates with each other；And make the second cutter groove that the described line part of described oblique groove adjacent in tire circumference connects with described bending section.
Pneumatic tire the most according to claim 1, wherein,
It is provided with in tire equator along the central main groove that extends of the circumferentially continuous ground of tire at described fetus face,
Each described oblique groove is positioning away from the inner with tire axial from described central main groove.
Pneumatic tire the most according to claim 2, wherein,
The oblique groove of the side that lands after in described oblique groove adjacent in tire circumference is carried out through and extends to described central main groove by described first cutter groove.
4. according to the pneumatic tire described in Claims 2 or 3, wherein,
The oblique groove of the side that lands after in described oblique groove adjacent in tire circumference is carried out through and extends near tire equator by described second cutter groove.
5. according to the pneumatic tire according to any one of Claims 1 to 4, wherein,
The oblique groove of the side that first lands in described oblique groove adjacent in tire circumference is carried out through and extends to tyre surface end by described first cutter groove.
6. according to the pneumatic tire according to any one of Claims 1 to 5, wherein,
Described first cutter groove continuously or extends to the tyre surface end of the opposing party via other ditch from the tyre surface end of a side along tire axial.
7. according to the pneumatic tire according to any one of claim 1～6, wherein,
Described second cutter groove continuously or extends to the tyre surface end of the opposing party via other ditch from the tyre surface end of a side along tire axial.
Pneumatic tire the most according to claim 1, wherein,
The described oblique groove of the side of tire equator connects in tire equator with the oblique groove of the opposite side of tire equator.
9. according to the pneumatic tire according to any one of claim 1～7, wherein,
The described oblique groove of the side of tire equator misplaces in tire circumference with the oblique groove of the opposite side of tire equator.
10. according to the pneumatic tire according to any one of claim 1～9, wherein,
Described first cutter groove includes: from tyre surface end to the Part I extended inside tire axial；And it is configured at the Part II less than Part I described in the position of described Part I more roller tire axially inner side and width ratio.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-012389 | 2015-01-26 | ||
| JP2015012389A JP6417226B2 (en) | 2015-01-26 | 2015-01-26 | Pneumatic tire |
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| CN105818615A true CN105818615A (en) | 2016-08-03 |
| CN105818615B CN105818615B (en) | 2019-04-16 |
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| CN201610011703.3A Active CN105818615B (en) | 2015-01-26 | 2016-01-08 | Pneumatic tire |
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| CN (1) | CN105818615B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437703A (en) * | 2017-02-16 | 2018-08-24 | 住友橡胶工业株式会社 | tire |
| CN110712480A (en) * | 2018-07-12 | 2020-01-21 | 住友橡胶工业株式会社 | Tyre for vehicle wheels |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7485134B1 (en) | 2023-03-15 | 2024-05-16 | 住友ゴム工業株式会社 | tire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0848115A (en) * | 1994-08-08 | 1996-02-20 | Bridgestone Corp | Pneumatic radial tire |
| JP2000247110A (en) * | 1999-02-26 | 2000-09-12 | Bridgestone Corp | Pneumatic tire |
| EP1363789B1 (en) * | 2001-02-28 | 2004-07-14 | Pirelli Pneumatici S.p.A. | Directional tread pattern for winter tire |
| JP2006151230A (en) * | 2004-11-30 | 2006-06-15 | Bridgestone Corp | Pneumatic tire |
| EP2230101A1 (en) * | 2009-03-16 | 2010-09-22 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| WO2014091790A1 (en) * | 2012-12-11 | 2014-06-19 | 横浜ゴム株式会社 | Pneumatic tire |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63106114A (en) * | 1986-06-13 | 1988-05-11 | Bridgestone Corp | Pneumatic tyre |
| JP2698556B2 (en) * | 1995-07-06 | 1998-01-19 | 株式会社ブリヂストン | Pneumatic radial tire |
| JP2561066B2 (en) * | 1995-08-22 | 1996-12-04 | 株式会社ブリヂストン | Pneumatic radial tire for high speed |
| JP3563534B2 (en) * | 1996-06-26 | 2004-09-08 | 株式会社ブリヂストン | Pneumatic tire |
| JP3916453B2 (en) * | 2001-12-13 | 2007-05-16 | 横浜ゴム株式会社 | Pneumatic tire |
| JP4373264B2 (en) * | 2004-04-15 | 2009-11-25 | 株式会社ブリヂストン | Pneumatic tire |
| WO2012002947A1 (en) * | 2010-06-30 | 2012-01-05 | Michelin Recherche Et Technique, S.A. | Improved wet and snow traction design for a tire tread |
| US8863795B2 (en) * | 2010-10-29 | 2014-10-21 | The Goodyear Tire & Rubber Company | Gripping edges for winter tire |
-
2015
- 2015-01-26 JP JP2015012389A patent/JP6417226B2/en active Active
-
2016
- 2016-01-08 CN CN201610011703.3A patent/CN105818615B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0848115A (en) * | 1994-08-08 | 1996-02-20 | Bridgestone Corp | Pneumatic radial tire |
| JP2000247110A (en) * | 1999-02-26 | 2000-09-12 | Bridgestone Corp | Pneumatic tire |
| EP1363789B1 (en) * | 2001-02-28 | 2004-07-14 | Pirelli Pneumatici S.p.A. | Directional tread pattern for winter tire |
| JP2006151230A (en) * | 2004-11-30 | 2006-06-15 | Bridgestone Corp | Pneumatic tire |
| EP2230101A1 (en) * | 2009-03-16 | 2010-09-22 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| WO2014091790A1 (en) * | 2012-12-11 | 2014-06-19 | 横浜ゴム株式会社 | Pneumatic tire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437703A (en) * | 2017-02-16 | 2018-08-24 | 住友橡胶工业株式会社 | tire |
| CN110712480A (en) * | 2018-07-12 | 2020-01-21 | 住友橡胶工业株式会社 | Tyre for vehicle wheels |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016137748A (en) | 2016-08-04 |
| CN105818615B (en) | 2019-04-16 |
| JP6417226B2 (en) | 2018-10-31 |
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