CN105480024B - Pneumatic tire - Google Patents
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- CN105480024B CN105480024B CN201510586310.0A CN201510586310A CN105480024B CN 105480024 B CN105480024 B CN 105480024B CN 201510586310 A CN201510586310 A CN 201510586310A CN 105480024 B CN105480024 B CN 105480024B
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Abstract
The present invention relates to the pneumatic tires of a kind of raising road performance and endurance quality.Multiple pattern block on tire shoulders (6) of pneumatic tire (1) are along tire circumferential array.Pattern block on tire shoulder (6) has the side (11) extended from the ground terminal (6t) on the outside of the tire axial of its tyre tread (6a) to tire radial direction inner side.In the tyre equatorial section comprising tire rotary shaft under normal state, side (11) includes the first arc sections (12), first arc sections (12) have a profile of concave arc shape, the concave arc shape there is center by the axially external position of tire than ground terminal (6t) and radius of curvature be tyre surface ground width (TW) 50%~100%.Tire radial distance (Ha) between the inner end (12i) of the tire radial direction of the tire of the tyre tread (2a) of fetus face (2) outermost end (2e) radially and the first arc sections (12) is the 5%~10% of tire maximum width.
Description
Technical field
The present invention relates to the pneumatic tires for improving road performance and endurance quality.
Background technique
For example, having for the pneumatic tire for being installed on four-wheel drive vehicle etc. in road travelings such as muddy ground
Chance, it is therefore desirable to which it plays sufficient hauling ability even if such road surface (hereinafter, sometimes claiming such performance
For " road performance ".).In order to improve road performance, the tyre surface ground width of fetus face is increased, the pattern block in fetus face is made
Between the ditch volume of traverse furrow that is formed increase, improve the shearing force for mud.
However, there are the following problems since the rubber mass of the pattern block of such tire is also larger: flower when driving
The calorific value of line block is big, and then the endurance quality of pattern block is low.
Patent document 1: Japanese Unexamined Patent Publication 6-171311 bulletin
Summary of the invention
The present invention proposes that main purpose is to provide a kind of pneumatic tire, is changing in view of above such problem
On the basis of the shape of the side of kind pattern block on tire shoulder, road performance and endurance quality can be improved.
Pneumatic tire of the invention has multiple tire shoulders in the tyre surface end lateral edge tire circumferential array of at least one party of fetus face
Pattern block, which is characterized in that above-mentioned pattern block on tire shoulder has radial from the ground terminal on the outside of the tire axial of its tyre tread to tire
The side that inside extends includes tire being assembled in regular wheel rim and being filled with uncharging under normal state for regular internal pressure
In the tyre equatorial section of rotary shaft, above-mentioned side includes the first arc sections, which has the wheel of concave arc shape
Exterior feature, the concave arc shape have center and radius of curvature for tyre surface ground connection than above-mentioned ground terminal by the axially external position of tire
The 50%~100% of width, the outermost end of the tire of the tyre tread of above-mentioned fetus face radially, the tire with above-mentioned first arc sections
Tire radial distance between inner end radially is the 5%~10% of tire maximum width.
For pneumatic tire according to the present invention, it is preferable that a part of above-mentioned first arc sections is than above-mentioned
Ground terminal extends by the position of tire axially inner side.
For pneumatic tire according to the present invention, it is preferable that in above-mentioned fetus face and along tire circumferential array
Above-mentioned pattern block on tire shoulder between have tire-shoulder transverse groove, above-mentioned tire-shoulder transverse groove include tire axial on inboard portion, Yi Jishang
The exterior portion of tyre surface end side is stated, the furrow width of above-mentioned exterior portion is 2.0 times~4.0 times of the furrow width of above-mentioned inboard portion.
For pneumatic tire according to the present invention, it is preferable that above-mentioned inboard portion has relative to tire axial
45 degree~65 degree of angle, above-mentioned exterior portion have 25 degree of angles below relative to tire axial.
For pneumatic tire according to the present invention, it is preferable that be arranged in the above-mentioned side of above-mentioned pattern block on tire shoulder
There is the side ditch extended from above-mentioned ground terminal to tire radial direction inner side, in above-mentioned tyre equatorial section, above-mentioned side ditch
Bottom of trench includes the second arc sections, which has the profile of concave arc shape, which leans on than above-mentioned ground terminal
Position on the outside of tire axial has center.
For pneumatic tire according to the present invention, it is preferable that the radius of curvature of above-mentioned second arc sections is than above-mentioned
The radius of curvature of first arc sections is small.
In pneumatic tire of the invention, the side of pattern block on tire shoulder includes the first arc sections, which has
The profile of concave arc shape, which has center in the position for leaning on tire axially external than ground terminal and radius of curvature is
The 50%~100% of tyre surface ground width.Such first arc sections make the rigidity of the tire of pattern block on tire shoulder radially effectively
Ground reduce, muddy ground when driving, promote the deformation of pattern block on tire shoulder.Therefore, it can will be filled between pattern block on tire shoulder
Mud be effectively discharged out, and a large amount of mud can be clamped again, so as to improve the shearing force for mud, played excellent
Road performance.In addition, the first arc sections are effectively reduced the rubber mass of pattern block on tire shoulder.Therefore, tire shoulder flower when driving
The fever of line block is inhibited, and endurance quality is improved.
Between the inner end of the tire of the tire of the tyre tread of fetus face outermost end radially and the first arc sections radially
Tire radial distance is set as the 5%~10% of tire maximum width.The rigid reducing effect and rubber of pattern block on tire shoulder as a result,
Therefore the performance that the reduction effect of amount is equalized obtains further the shearing force of mud because of the deformation of pattern block on tire shoulder
It improves, and the fever of pattern block on tire shoulder is more effectively inhibited.
Therefore, pneumatic tire of the invention can play excellent road performance and endurance quality.
Detailed description of the invention
Fig. 1 is the expanded view of the fetus face of the pneumatic tire of one embodiment of the present invention.
Fig. 2 is the enlarged drawing of Fig. 1.
Fig. 3 is the line A-A cross-sectional view of Fig. 1.
Fig. 4 is the tyre equatorial cross-sectional view near the tyre surface end of other embodiment.
The explanation of appended drawing reference
1 ... pneumatic tire；2 ... fetus faces；The tyre tread of 2a ... fetus face；The outermost end of 2e ... fetus face；6 ... tire shoulder decorative patterns
Block；The tyre tread of 6a ... pattern block on tire shoulder；The ground terminal of 6t ... pattern block on tire shoulder；11 ... sides；12 ... first arc sections；12i…
The inner end of first arc sections；TW ... tyre surface ground width.
Specific embodiment
Hereinafter, being illustrated based on the drawings one embodiment of the present invention.
Fig. 1 is the tyre surface for showing the pneumatic tire (hereinafter, being also referred to as " tire " sometimes) 1 of one embodiment of the present invention
The expanded view in portion 2.As shown in Figure 1, the tire 1 of present embodiment is for example preferably used as the Weatherable tyre of four-wheel-drive vehicle.
A pair in the two circumferentially continuous extensions of lateral edge tire of tire equator C is provided in the fetus face 2 of present embodiment
Circumferential groove 3,3；The multiple central transverses 4 that will be connected between circumferential groove 3,3；And circumferential groove 3 is connect with tyre surface end Te more
A tire-shoulder transverse groove 5.
Above-mentioned " tyre surface end " Te is defined as making to be assembled in regular wheel rim and uncharging filled with regular internal pressure is regular
Tire 1 under state bears regular load, and makes its tire axial outermost with 0 degree of camber angle and plane earth face contact when
Earthing position.Under normal state, the tire axial distance between two tyre surface ends Te, Te is defined as tyre surface ground width
TW.In the case where not specified, the size etc. of each section of tire is the value measured under normal state.
" regular wheel rim ", which refers to, provides this for each tire in the schematism comprising specification based on tire
The wheel rim of specification, such as " standard rim " is then indicated if JATMA, " Design Rim " is then indicated if TRA, if ETRTO
Then indicate " Measuring Rim ".
" regular internal pressure ", which refers to, to be provided respectively in the schematism comprising specification based on tire for each tire
The air pressure of specification, " highest air pressure " is then indicated if JATMA, and table " TIRE LOAD LIMITS AT is then indicated if TRA
The maximum value recorded in VARIOUS COLD INFLATION PRESSURES ", then indicates " INFLATION if ETRTO
PRESSURE".In the case where tire is used for car, regular internal pressure is 180kPa.
" regular load ", which refers to, to be provided respectively in the schematism comprising specification based on tire for each tire
The load of specification then indicates " maximum loadability " if JATMA, and table " TIRE LOAD LIMITS AT is then indicated if TRA
The maximum value recorded in VARIOUS COLD INFLATION PRESSURES ", then indicates " LOAD if ETRTO
CAPACITY".In the case where tire is used for car, regular load is comparable to 88% load of above-mentioned load.
Circumferential groove 3 is extended with zigzag.Such circumferential groove 3 has tire axial ingredient, therefore, for being pressed in ditch
Hard mud and play biggish shearing force.Therefore, road performance is improved.
Fig. 2 is the enlarged drawing of the fetus face 2 of Fig. 1.As shown in Fig. 2, according to improving the shearing force for mud and ensuring circumferential direction
The viewpoint of rigidity in the biggish tire circumferential direction in the land portion near ditch 3, circumferential groove 3 are excellent relative to the angle [alpha] 1 of tire circumferential direction
It is selected as 30 degree~40 degree.
In order to effectively play above-mentioned effect, circumferential groove 3 it is preferred with the furrow width W1 on longitudinal direction direction at right angle
It is the 3%~8% of tyre surface ground width TW.In addition, the ditch depth (illustration omitted) of circumferential groove 3 is preferably tyre surface ground width TW
4%~9%.
Central transverse 4 is for example linearly to extend.The rigidity, central transverse 4 in the land portion near central transverse 4 as a result,
Interior spoil disposal performance is improved.
Central transverse 4 includes: the first central transverse 4A, and tilting relative to tire axial towards side (is towards a left side in this figure
Top)；And the second central transverse 4B, it is tilted in the opposite direction relative to the first central transverse 4A, these traverse furrows are in tire
It is alternately arranged in circumferential direction.The power acted in the transverse direction of the first central transverse 4A and the second central transverse 4B as a result, is mutually supported
Disappear, therefore, the straight trip stability on muddy ground is improved.
Central transverse 4 is preferably 50 degree~60 degree relative to the angle [alpha] 2 of tire circumferential direction.Central transverse 4 angle [alpha] 2 not
In the case where 50 degree of foot, the shearing force of mud is likely to decrease.In the case where the angle [alpha] 2 of central transverse 4 is more than 60 degree,
The discharge of mud towards circumferential groove 3 is possible to be deteriorated.
Central transverse 4 with the furrow width W1's of the preferably circumferential ditch 3 of furrow width W2 on longitudinal direction direction at right angle
35%~55%.The 70%~90% of the ditch depth of the preferably circumferential ditch 3 of ditch depth (illustration omitted) of central transverse 4.Thereby, it is possible to
Effectively improve the rigidity in the land portion near the shearing force and central transverse 4 for mud.
Tire-shoulder transverse groove 5 includes the inboard portion 8 on tire axial and the outside than inboard portion 8 by the side tyre surface end Te
Part 9.
In the present embodiment, inboard portion 8 has constant furrow width.Exterior portion 9 in present embodiment have than
The roomy furrow width of the ditch of inboard portion 8.
In order to improve road performance and maintain endurance quality without making the rigidity in the land portion near inboard portion 8 excessively
Reduce, inboard portion 8 with the furrow width W1's of for example preferably circumferential ditch 3 of furrow width W3 on longitudinal direction direction at right angle
35%~75%.Equally, the 55%~75% of the ditch depth of the preferably circumferential ditch 3 of ditch depth (illustration omitted) of inboard portion 8.
The furrow width W4 of exterior portion 9 is preferably 2.0 times~4.0 times of the furrow width W3 of inboard portion 8.In outer side section 9
In the case where 2.0 times of the furrow width W3 of furrow width W4 deficiency inboard portion 8, there is the side tyre surface end Te of biggish cross force in effect,
The shearing force for mud can not be improved, therefore road performance is likely to decrease.It is more than inboard portion in the furrow width W4 of outer side section 9
In the case where 4.0 times of 8 furrow width W3, the rigidity in land portion near exterior portion 9 is excessively reduced, so that have can for endurance quality
It can reduce.In addition, the furrow width W4 of exterior portion 9 is the maximum width in tire circumferential direction.
Inboard portion 8 is tilted relative to tire axial.Such inboard portion 8 can ensure rigid near inboard portion 8
Property, and can by inboard portion 8 the outside side section 9 of mud or circumferential groove 3 be smoothly discharged.
Inboard portion 8 is preferably 45 degree~65 degree relative to the angle [alpha] 3 of tire axial.Accordingly, for mud shearing force and
The raising that the spoil disposal performance of inboard portion 8 based on tire rolling is equalized.
Exterior portion 9 is tilted also relative to tire axial.Exterior portion 9 relative to tire axial angle [alpha] 4 preferably than interior
The angle [alpha] 3 of side section 8 is small.Thereby, it is possible to the tire axis that maintenance effect has the land portion of the side tyre surface end Te of biggish cross force
Therefore upward rigidity is largely increased in the turn performance of muddy road when driving.In order to effectively play such work
With exterior portion 9 is preferably 25 degree or less relative to the angle [alpha] 4 of tire axial.The above-mentioned angle [alpha] 4 of exterior portion 9 is smooth
The angle for the center line 9c that ground connects the middle position in the tire circumferential direction of exterior portion 9.
The decreasing portion 10 that there is exterior portion 9 above-mentioned angle [alpha] 4 to successively decrease towards tyre surface end Te.Above-mentioned effect obtains as a result,
More effectively play.
As shown in Figure 1, fetus face 2 is divided into center running lug column 7R by circumferential groove 3, central transverse 4 and tire-shoulder transverse groove 5
And a pair of of pattern block on tire shoulder column 6R.Pattern block on tire shoulder column 6R has two tyre surface end Te, Te sides along tire circumferential array
Multiple pattern block on tire shoulders 6.Center running lug column 7R has between a pair of of circumferential groove 3,3 along multiple centers of tire circumferential array
Pattern block 7.
Pattern block on tire shoulder 6 is in circumferential groove 3, tyre surface end Te and the shape between the circumferentially upper adjacent tire-shoulder transverse groove 5,5 of tire
At.
Fig. 3 is the line A-A cross-sectional view of Fig. 1.As shown in figure 3, pattern block on tire shoulder 6 includes tyre tread 6a；And side 11,
Extend from the ground terminal 6t on the outside of the tire axial of tyre tread 6a to tire radial direction inner side.In the present embodiment, pattern block on tire shoulder 6
Ground terminal 6t it is consistent with tyre surface end Te.
Side 11 includes the first arc sections 12, which has the profile of concave arc shape, wherein the concave arc
Shape has center by the axially external position of tire than ground terminal 6t.Such first arc sections 12 make pattern block on tire shoulder 6
Tire rigidity radially effectively reduce, muddy ground when driving, promote the tire of pattern block on tire shoulder 6 radially
It deforms (buckling).Therefore, it is effectively discharged out by the mud that the deformation of pattern block on tire shoulder 6 will be filled with tire-shoulder transverse groove 5, and
A large amount of mud can be clamped again, therefore, the shearing force of mud is improved, to play excellent road performance.Separately
Outside, the first arc sections 12 reduce the rubber mass of pattern block on tire shoulder 6, and therefore, the fever of pattern block on tire shoulder 6 when driving obtains
Inhibit.The endurance quality of pattern block on tire shoulder 6 is improved as a result,.
In the present embodiment, the first arc sections 12 are extended continuously from ground terminal 6t to tire radial direction inner side.First circular arc
The radius of curvature R 1 in portion 12 is the 50%~100% of tyre surface ground width TW.In the insufficient tyre surface ground width TW of radius of curvature R 1
50% in the case where, the rigidity of tire radially near the ground terminal 6t of pattern block on tire shoulder 6 becomes too small, endurance quality drop
It is low.In the case where radius of curvature R 1 is more than the 100% of tyre surface ground width TW, the rubber mass of pattern block on tire shoulder 6 can not be made to have
Effect ground is reduced, and can not inhibit the fever of pattern block on tire shoulder 6 when driving.Therefore, radius of curvature R 1 is preferably tyre surface ground width
The 60%~90% of TW.
The tire of first arc sections 12 inner end 12i radially, with the tire of the tyre tread 2a of fetus face 2 radially outermost
Holding distance i.e. the first arc sections length Ha of the tire of 2e radially is the 5%~10% of tire maximum width (illustration omitted).
In the case where the 5% of the first arc sections length Ha deficiency tire maximum width, it is unable to give full play the rigidity of pattern block on tire shoulder 6
The reduction effect of reducing effect and rubber mass.The case where the first arc sections length Ha is more than the 10% of tire maximum width
Under, the rigidity of pattern block on tire shoulder 6 reduces, and the shearing force of mud is reduced.Therefore, the first arc sections length Ha be preferably tire most
The 6%~9% of big width.Above-mentioned " tire maximum width " is prominent in addition to being set to the text of sidewall SW, wheel rim guard member etc.
It rises except object, projects to the tire axial distance between tire axial outermost tire maximum width position (illustration omitted).
The side ditch 13 extended from ground terminal 6t to tire radial direction inner side is provided in the side of pattern block on tire shoulder 6 11.This
The side ditch 13 of sample is effectively reduced the rigidity of pattern block on tire shoulder 6 and rubber mass, improves road performance and durability
Energy.
The ground terminal 6t of the pattern block on tire shoulder 6 of present embodiment is by the apparent edge that connect tyre tread 6a with side 11
(angle) indicates.However, ground terminal 6t is not limited to such mode, it is also possible to be arranged in and connect tyre tread 6a with side 11
The mode (indicated by double dot dash line) on small arc-shaped 6b.In this case, compared with the case where being formed by edge, ground terminal 6t is attached
Close rigidity is improved, so endurance quality is further enhanced.
In the present embodiment, side ditch 13 is radial linearly to extend along tire.The tire of pattern block on tire shoulder 6 as a result,
Rigidity in circumferential direction reduces, so the unlimited closure of tire-shoulder transverse groove 5 becomes easy, for the shearing force of mud, spoil disposal performance
It improves.
The bottom of trench 13s of side ditch 13 includes the second arc sections 14, which has the profile of concave arc shape, should
Concave arc shape has center by the axially external position of tire than ground terminal 6t.Such second arc sections 14 make slob
The rubber mass of the pattern block on tire shoulder 6 of face when driving effectively reduces, and further promotes its deformation.Therefore, it will be filled with tire-shoulder transverse groove 5
Interior mud is effectively discharged out, and the fever of pattern block on tire shoulder 6 when driving is further inhibited.
Radius of curvature R 1 of the radius of curvature R 2 of second arc sections 14 preferably than the first arc sections 12 is small.Thereby, it is possible to more
Effectively increase the ditch volume of side ditch 13, and then the rubber mass of pattern block on tire shoulder 6 can be reduced.In order to effectively play in this way
Effect, the radius of curvature R 2 of the second arc sections 14 is preferably 60% or less tyre surface ground width TW.
The inner end 13i of the tire of side ditch 13 radially is located at radial outer by tire than the inner end 12i of the first arc sections 12
The position of side.The excessive reduction of rigidity as a result, near the inner end 12i of the first arc sections 12 is inhibited.According to such sight
Point, the distance Hb of the tire of the second arc sections 14 radially are preferably the 30%~50% of above-mentioned first arc sections length Ha.
As shown in Figure 1, being provided with tire shoulder band ditch 17 and tire shoulder siping 18 in the tyre tread 6a of pattern block on tire shoulder 6.Tire
The inner end 17i of shoulder band ditch 17 forms terminal in pattern block on tire shoulder 6, and outer end 17e is connected to ground terminal 6t.Tire shoulder cutter groove flower
Line 18 is configured to the inner end 17i than tire shoulder band ditch 17 by tire axially inner side.As a result, the rigidity of pattern block on tire shoulder 6 is more
It is effectively reduced.
The outer end 17e of tire shoulder band ditch 17 is connected to side ditch 13.The deformation (buckling) of shoulder portion, tire shoulder as a result,
The movement of pattern block 6 towards tire circumferential direction becomes to be more easier, and tire-shoulder transverse groove 5 can significantly open wide closure, so road
It can be further enhanced.
As shown in Fig. 2, tire shoulder siping 18 includes the first siping 18A, the second siping 18B and third knife
Slot decorative pattern 18C.First siping 18A, the second siping 18B, third siping 18C are linearly to extend.First knife
Slot decorative pattern 18A is connected to the inner end 17i of tire shoulder band ditch 17 and forms terminal in pattern block on tire shoulder 6.Second siping
First siping 18A is connect by 18B with circumferential groove 3.Third siping 18C is by the first siping 18A and inboard portion 8
Connection.Such siping 18 reduces the rigidity of pattern block on tire shoulder 6 more efficiently, muddy road when driving, into
One step promotes the deformation of pattern block on tire shoulder 6, movement.
Center running lug 7 is divided by a pair of of the 3,3, first central transverse 4A of circumferential groove and the second central transverse 4B.
In the present embodiment, the tyre tread 7a of center running lug 7 is formed as approximate pentagon.Such center running lug 7
So that edge is played a role in a plurality of directions, plays the shearing force relative to muddy ground.
Fig. 4 is the cross-sectional view of the pattern block on tire shoulder 6 of other embodiments of the present invention.As shown in figure 4, the embodiment
First arc sections 12 of the side 11 of pattern block on tire shoulder 6 include: inner arc portion 21, are leaned in tire axial than ground terminal 6t
The position of side extends；And outer arc portion 22, extending than ground terminal 6t by the axially external position of tire.In such
Side arc sections 21 further promote the deformation of pattern block on tire shoulder 6, so can more efficiently will be filled in tire-shoulder transverse groove 5
Mud discharge.
In the biggish situation of tire radical length H1 of inside arc sections 21, the rigidity of pattern block on tire shoulder 6 is excessively reduced,
Endurance quality is possible to be deteriorated.Therefore, the tire radical length H1 in inner arc portion 21 is preferably the tire in outer arc portion 22
The 55%~75% of radical length H2.
The land of fetus face 2 is than preferably 55%~70%.In the case where land is than less than 55%, each pattern block 6,7
Rigidity become too small, endurance quality is possible to be deteriorated.Tractive force in the case that ratio is more than 70% on land, on muddy ground
It is likely to decrease.Land ratio is the gross area of tyre tread 6a, 7a of each pattern block 6,7 relative to assuming all ditches of fetus face 2
And siping buries the ratio of the area of the imaginary tyre tread of fetus face 2 usually.
The tyre surface ground width TW of the tire 1 of present embodiment is preferably the 70%~90% of tire maximum width.In this way
Tire 1 can make with the contact area of muddy road surface increase, excellent road performance can be obtained.
Although being had been described in detail above to embodiments of the present invention, the present invention is not limited to embodiment illustrated,
Certainly various modes can be deformed into implement.
[embodiment]
Specification based on table 1 and manufactured experimently the size with the motif in Fig. 1 be 225/95R16C pneumatic tire,
And each road performance, endurance quality and rate of curving for trying tire is tested.Respectively for the main general of examination tire
Specification, test method are as follows.
< road performance >
Under the following conditions by each all wheels for being installed on the four-wheel drive vehicle that capacity is 3600cc for examination tire.And
And test driver travels the vehicle on the test runway of muddy road surface, is commented according to the sensory experience of test driver
The ride characteristic relevant to control stability, straight trip stability of valence at this time.The result of comparative example 1 is chosen as 100
Scoring is to indicate result.Numerical value is the bigger the better.
Wheel rim: 6.0J
Internal pressure: 475kPa
< endurance quality >
Using rotary drum tyre tester, make under conditions of following it is each advance on rotary drum for examination tire, and measure it
Endurance quality.Travel distance when by generating abnormal sound from the inside for trying tire indicates result.The upper limit of travel distance is
30000km。
Wheel rim: 6.0J
Internal pressure: 475kPa
Load: 17kN
Speed: 100km/h
< rate of curving >
Rate of curving when measurement acts on the load of following conditions for examination tire.
The rate of curving is acquired by buckling/first arc sections length (actual numerical value).With by the bending of comparative example 1
Rate is set as 100 index to indicate result.Particularly preferred numerical value is 104~110.
Internal pressure: 475kPa
Load: 10kN
Test result is shown in table 1.
1 first arc sections length of ※ is the first arc sections length Ha/ tire maximum width (%).
[table 1]
It is able to confirm that according to the result of test: compared with the tire of comparative example, the endurance quality and mud of the tire of embodiment
The raising that road performance is equalized.In addition, the tire for the size different from above-mentioned size is also tested, phase is shown
Same trend.
Claims (5)
1. a kind of pneumatic tire has multiple tire shoulder decorative patterns in the tyre surface end lateral edge tire circumferential array of at least one party of fetus face
Block,
The pneumatic tire is characterized in that,
The pattern block on tire shoulder has the side extended from the ground terminal on the outside of the tire axial of its tyre tread to tire radial direction inner side,
Be assembled in regular wheel rim and be filled with regular internal pressure the wheel comprising tire rotary shaft uncharged under normal state
In tire meridional cross sectional, the side includes the first arc sections, which includes the ground terminal, has concave arc shape
Profile, which has center by the axially external position of tire than the ground terminal and radius of curvature is tyre surface
The 50%~100% of ground width,
The tire of the tyre tread of fetus face outermost end radially, with the tires of first arc sections inner end radially it
Between tire radial distance be tire maximum width 5%~10%,
A part of first arc sections is extending than the ground terminal by the position of tire axially inner side.
2. pneumatic tire according to claim 1, which is characterized in that
The fetus face and between the pattern block on tire shoulder along tire circumferential array have tire-shoulder transverse groove,
The tire-shoulder transverse groove includes the exterior portion of the inboard portion and the tyre surface end side on tire axial,
The furrow width of the exterior portion is 2.0 times~4.0 times of the furrow width of the inboard portion.
3. pneumatic tire according to claim 2, which is characterized in that
The inboard portion has 45 degree~65 degree of angle relative to tire axial, and the exterior portion is relative to tire axial
With 25 degree of angles below.
4. pneumatic tire described in any one of claim 1 to 3, which is characterized in that
The side ditch extended from the ground terminal to tire radial direction inner side is provided in the side of the pattern block on tire shoulder,
In the tyre equatorial section, the bottom of trench of the side ditch includes the second arc sections, which has recessed
The profile of arc-shaped, the concave arc shape have center by the axially external position of tire than the ground terminal.
5. pneumatic tire according to claim 4, which is characterized in that
The radius of curvature of second arc sections is smaller than the radius of curvature of first arc sections.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-203390 | 2014-10-01 | ||
| JP2014203390A JP6063908B2 (en) | 2014-10-01 | 2014-10-01 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105480024A CN105480024A (en) | 2016-04-13 |
| CN105480024B true CN105480024B (en) | 2019-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510586310.0A Active CN105480024B (en) | 2014-10-01 | 2015-09-15 | Pneumatic tire |
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| Country | Link |
|---|---|
| JP (1) | JP6063908B2 (en) |
| CN (1) | CN105480024B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7167475B2 (en) * | 2018-04-16 | 2022-11-09 | 住友ゴム工業株式会社 | tire |
| JP7124553B2 (en) * | 2018-08-21 | 2022-08-24 | 住友ゴム工業株式会社 | pneumatic tire |
| JP7392461B2 (en) * | 2019-12-25 | 2023-12-06 | 住友ゴム工業株式会社 | pneumatic tires |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2660950B2 (en) * | 1992-12-03 | 1997-10-08 | 住友ゴム工業株式会社 | Pneumatic tire with directional tread |
| JP3365744B2 (en) * | 1999-04-01 | 2003-01-14 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP4028758B2 (en) * | 2002-05-17 | 2007-12-26 | 住友ゴム工業株式会社 | Heavy duty radial tire |
| JP2009023601A (en) * | 2007-07-23 | 2009-02-05 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| WO2009081973A1 (en) * | 2007-12-25 | 2009-07-02 | Bridgestone Corporation | Tire |
| US20100236681A1 (en) * | 2009-03-17 | 2010-09-23 | Daniel Ray Beha | Tire having tread blocks with blended walls |
| JP5238050B2 (en) * | 2011-03-08 | 2013-07-17 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP5438719B2 (en) * | 2011-04-20 | 2014-03-12 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP5541228B2 (en) * | 2011-05-27 | 2014-07-09 | 横浜ゴム株式会社 | Pneumatic tire |
| EP2594417B1 (en) * | 2011-11-15 | 2015-01-14 | Sumitomo Rubber Industries Limited | Run-flat tire |
| EP2620299B1 (en) * | 2012-01-26 | 2015-06-17 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
| JP5834035B2 (en) * | 2013-02-26 | 2015-12-16 | 住友ゴム工業株式会社 | Pneumatic tire |
-
2014
- 2014-10-01 JP JP2014203390A patent/JP6063908B2/en active Active
-
2015
- 2015-09-15 CN CN201510586310.0A patent/CN105480024B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016068907A (en) | 2016-05-09 |
| JP6063908B2 (en) | 2017-01-18 |
| CN105480024A (en) | 2016-04-13 |
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