CN104859378B - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
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- CN104859378B CN104859378B CN201510084799.1A CN201510084799A CN104859378B CN 104859378 B CN104859378 B CN 104859378B CN 201510084799 A CN201510084799 A CN 201510084799A CN 104859378 B CN104859378 B CN 104859378B
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- land part
- cutter
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Abstract
The present invention, which is provided, to be maintained manipulation stability and wet road performance and can improve the pneumatic tire of noiseproof feature, and the first middle land part (11) and the second middle land part (12) of the pneumatic tire are ribbed.Middle cutter groove (13) includes the first middle cutter groove (14) and the second middle cutter groove (15) of substantially arc-shaped.A plurality of first tire-shoulder transverse groove (33) and the second tire-shoulder transverse groove (34) are respectively equipped with the first tire-shoulder land part (31) and the second tire-shoulder land part (32).Each first tire-shoulder transverse groove and each second tire-shoulder transverse groove have the first ground end (35) and the second ground end (36) respectively.Each first ground end (35A) is respectively arranged at the positions different from each first ground end (35B) of the second tire-shoulder transverse groove.Each second ground end (36A) of first tire-shoulder transverse groove is configured at the positions different from each second ground end (36B) of the second tire-shoulder transverse groove.
Description
Technical field
The present invention relates to maintain manipulation stability and wet road performance and can improve the pneumatic tire of noiseproof feature.
Background technology
Following patent documents 1 propose there is following tire, i.e.,：Furrow width of the tire to the tap drain along the circumferentially continuous extension of tire
Degree, position and the shape of band ditch of end is formed in the part of land improved.Such tire is hoped to have
Following effect：The pumping sound as caused by ditch is reduced, so as to improve noiseproof feature.
Patent document 1：Japanese Unexamined Patent Publication 2012-162194 publications
However, in the pneumatic tire of citation 1, to manipulation stability and the further improvement of wet road performance requirement.
The content of the invention
It is a primary object of the present invention to provide a kind of pneumatic tire, it is arranged on middle land part and tire to improve
The ditch of shoulder land part and being shaped as substantially for cutter groove, maintenance manipulation stability and wet road performance, and improve noiseproof feature.
The pneumatic tire of the present invention is grounded side edge by being provided with fetus face in the both sides of tire equator and most by tyre surface
A pair of shoulder main grooves of the circumferentially continuous extension of tire and between the pair of shoulder main groove along the circumferentially continuous extension of tire
Central main groove, and provided with a pair of middle land parts between the shoulder main groove and the central main groove and in each institute
A pair of tire-shoulder land parts on the outside of the tire axial of shoulder main groove are stated, the pneumatic tire is characterised by, the middle land
Ground part includes：The first middle land part located at a side side of the tire equator；And located at the tire equator
Second middle land part of the opposing party side, the first middle land part and the second middle land part are formed as
Ribbed of the ditch width in below 1.5mm middle cutter groove is provided only with, the middle cutter groove includes：Substantially in the middle of the first of arc-shaped
Cutter groove, it is located at the described first middle land part, and is protruded towards the circumferential side side of tire；And substantially the second of arc-shaped
Middle cutter groove, it is located at the described second middle land part, and is protruded towards the circumferential the opposing party side of tire, the tire-shoulder land portion
Dividing includes：The first tire-shoulder land part on the outside of the tire axial of the described first middle land part；And located at described
The second tire-shoulder land part on the outside of the tire axial of second middle land part, in the first tire-shoulder land part provided with many
First tire-shoulder transverse groove of the substantially arc-shaped that bar protrudes towards the circumferential the opposing party side of the tire, in the second tire-shoulder land portion
It is arranged with the second tire-shoulder transverse groove of the substantially arc-shaped of a plurality of side side protrusion circumferential towards the tire, each first tire shoulder
Traverse furrow and each second tire-shoulder transverse groove have respectively be located at the first ground end most by the circumferential side side of the tire,
With positioned at the second ground end for most leaning on the circumferential the opposing party side of the tire, each described the first of first tire-shoulder transverse groove connects
Ground terminal portion is respectively arranged at, the position different from each first ground end of second tire-shoulder transverse groove in tire circumference
Put, each second ground end of first tire-shoulder transverse groove is respectively arranged at, with second tire shoulder in tire circumference
The different position of each second ground end of traverse furrow.
The present invention pneumatic tire be preferably：Its direction installed to vehicle is designated, the first middle land part
And the first tire-shoulder land part when vehicle is installed positioned at than the tire equator more lean on vehicle interior side position.
The present invention pneumatic tire be preferably：The middle cutter groove includes：First half-open cutter accommodating slot, its one end with it is described in
Tap drain connection is entreated, and the other end forms end in the middle land part；And the second half-open cutter accommodating slot, its one end and institute
Shoulder main groove connection is stated, and the other end forms end in the middle land part.
The present invention pneumatic tire be preferably：In the described first middle land part along tire circumferentially alternately provided with described the
One semi-open cutter groove and a plurality of standard-sized sheet cutter accommodating slot that the shoulder main groove is communicated to from the central main groove.
The present invention pneumatic tire be preferably：The second half-open cutter accommodating slot includes：Small-sized second half-open cutter accommodating slot, its
The width centreline of the middle land part than extending along the tire equator more leans on the position shape of the shoulder main groove side
Into end；And large-scale second half-open cutter accommodating slot, it is more leaning on the position shape of the central main groove side than the width centreline
Into end, the small-sized second half-open cutter accommodating slot is circumferentially alternately provided with along tire in the described second middle land part and described big
The half-open cutter accommodating slot of type second.
The present invention pneumatic tire be preferably：The inner of the tire axial of first tire-shoulder transverse groove is in first tire shoulder
End is formed in the part of land, the inner connection from first tire-shoulder transverse groove is provided with the first tire-shoulder land part
To the tire shoulder cutter groove of the shoulder main groove.
The present invention pneumatic tire be preferably：First tire-shoulder transverse groove includes：Band cutter groove provided with the tire shoulder cutter groove
First tire-shoulder transverse groove；And be not provided with the tire shoulder cutter groove without the tire-shoulder transverse groove of cutter groove first, the tire shoulder of band cutter groove first is horizontal
Ditch is arranged alternately with described without the tire-shoulder transverse groove of cutter groove first in tire circumference.
The present invention pneumatic tire be preferably：The inner of the tire axial of second tire-shoulder transverse groove is in second tire shoulder
End is formed in the part of land, second tire-shoulder land is partly comprised on the inside of each inner tire axial and is not provided with ditch
And cutter groove and along flat (plain) portion of the circumferentially continuous extension of tire.
The the first middle land part and the second middle land part of the pneumatic tire of the present invention are formed as being provided only with ditch
Ribbed of the width in below 1.5mm middle cutter groove.In the past, the effect of being arranged at has the ditch of the land part of big ground pressure easy
Produce big pumping sound.In the present invention, because the middle land part that effect has big ground pressure is ribbed, thus, it is possible to
Effectively suppress the pumping sound of ditch.Also, such middle land part can effectively improve manipulation stability.
Middle cutter groove includes：The substantially middle cutter groove of arc-shaped first, it is located at the first middle land part, and towards tire week
To a side side protrusion；And substantially the second middle cutter groove of arc-shaped, it is located at the second middle land part, and towards tire week
To the opposing party side protrusion.Thereby, it is possible to effectively maintain wet road performance.Also, such first middle cutter groove and second
Middle cutter groove can make the road surface of each middle land part impact the frequency dispersion of sound, so that noise white noise (White
Noise) change.
Tire-shoulder land part includes：The first tire-shoulder land portion on the outside of the tire axial of the first middle land part
Point；And the second tire-shoulder land part on the outside of the tire axial of the second middle land part.In the first tire-shoulder land portion
It is arranged with the first tire-shoulder transverse groove of the substantially arc-shaped of a plurality of the opposing party side protrusion circumferential towards tire.In the second tire-shoulder land portion
It is arranged with the second tire-shoulder transverse groove of the substantially arc-shaped of a plurality of side side protrusion circumferential along tire.
Such first tire-shoulder transverse groove and the second tire-shoulder transverse groove can suppress tire shoulder compared with the ditch linearly extended
The circumferential deformation of the tire of land part, and excellent drainage performance can be played.Therefore, it is possible to effectively maintain manipulation steady
Qualitative and wet road performance.Also, pumping sound when such first tire-shoulder transverse groove and the second tire-shoulder transverse groove can make traveling
Frequency dispersion, so that noise whitening.
Each first tire-shoulder transverse groove and each second tire-shoulder transverse groove have be located at the circumferential side side of most roller tire the respectively
One ground end and the second ground end positioned at the circumferential the opposing party side of most roller tire.Each the first of first tire-shoulder transverse groove connects
Ground terminal portion is respectively arranged at different from each first ground end of the second tire-shoulder transverse groove positions in tire circumference.First tire shoulder
Each second ground end of traverse furrow is respectively arranged in tire circumference different from each second ground end of the second tire-shoulder transverse groove
Position.
Thus, the opportunity being grounded to road surface of each first ground end and each second ground end is disperseed, energy
Enough pumping sound whitenings for effectively making to impact sound and ditch because of caused by the edge of ditch.
As above, pneumatic tire of the invention is able to maintain that manipulation stability and wet road performance, and can improve noise-induced
Energy.
Brief description of the drawings
Fig. 1 is the expanded view of the fetus face of the pneumatic tire of an embodiment of the invention.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is Fig. 1 the first middle land part and the enlarged drawing of the second middle land part.
Fig. 4 is the enlarged drawing of Fig. 1 the first tire-shoulder land part.
Fig. 5 is the enlarged drawing of Fig. 1 the second tire-shoulder land part.
Fig. 6 is the expanded view of the fetus face of the pneumatic tire of comparative example.
Description of reference numerals
2：Fetus face；3：Shoulder main groove；4：Central main groove；5：Middle land part；6：Tire-shoulder land part；11：First
Middle land part；12：Second middle land part；13：Middle cutter groove；14：First middle cutter groove；15：Second middle cutter groove；
31：First tire-shoulder land part；32：Second tire-shoulder land part；33：First tire-shoulder transverse groove；34：Second tire-shoulder transverse groove；35：The
One ground end；36：Second ground end.
Embodiment
Hereinafter, one embodiment of the present invention is illustrated based on accompanying drawing.
Fig. 1 is the pneumatic tire of present embodiment (hereinafter sometimes referred to simply as " tire ".) 1 fetus face 2 expanded view.
The pneumatic tire 1 of present embodiment is for example suitable for car.
The tread contour that the fetus face 2 of present embodiment is for example designated with the direction installed to vehicle.This implementation
The fetus face 2 of mode distinguishes A and vehicle outside B on the inside of designated vehicle when carrying out vehicle installation.The direction example installed to vehicle
Such as it is indicated in sidewall with word or mark.
As shown in figure 1, in fetus face 2 provided with a pair of shoulder main grooves 3 and positioned at the central main groove 4 between them.Each tire
Shoulder tap drain 3 and central main groove 4 are respectively along the circumferentially continuous extension of tire.
Shoulder main groove 3, which is configured at, most leans on tyre surface earth terminal Te sides.The shoulder main groove 3 of present embodiment was formed as along tire week
To it is linear.Shoulder main groove 3 can also be formed as wavy or zigzag.
" tyre surface earth terminal Te " refers to：To being assembled in regular wheel rim (not shown) and filled with regular internal pressure and non-loaded
The tire 1 of normal state loads regular load, and tire axial when making it be grounded on plane with 0 ° of camber angle is outermost
Earthing position.
" regular wheel rim " refers to：In the schematism of the specification comprising tire institute foundation, the specification is according to each tire
Identified wheel rim, if for example, JATMA is then " standard rim ", if TRA is then " Design Rim ", if ETRTO is then
For " Measuring Rim ".
" regular internal pressure " refers to：In the schematism of the specification comprising tire institute foundation, the specification is according to each tire
Identified air pressure, if for example, JATMA is then " highest air pressure ", if TRA is then table " TIRE LOAD LIMITS
Maximum described in AT VARIOUS COLD INFLATION PRESSURES ", if ETRTO is then " INFLATION
PRESSURES”。
" regular load " refers to：In the schematism of the specification comprising tire institute foundation, the specification is according to each tire
Identified load, if for example, JATMA is then " maximum load capability ", if TRA is then table " TIRE LOAD LIMITS
Maximum described in AT VARIOUS COLD INFLATION PRESSURES ", if ETRTO is then " LOAD
CAPACITY”。
Central main groove 4 is for example formed as along circumferential linear of tire.The central main groove 4 of present embodiment is by 1 bar ditch group
Into, and on tire equator C.Central main groove 4 for example can also be set a pair in tire equator C both sides.
In order to maintain the rigidity of fetus face 2 and play excellent wet road performance, the ditch width W1 of shoulder main groove 3 and center
The ditch width W2 of tap drain 4 is preferably, for example, the 3.5~6.0% of tyre surface ground width TW.Tyre surface ground width TW is, described regular
The distance of tire axial between tyre surface earth terminal Te, Te of the tire 1 of state.
Figure 2 illustrates the sectional view of the tire 1 of the A-A positions equivalent to Fig. 1.As shown in Fig. 2 shoulder main groove 3
The trench depth d1 and trench depth d2 of central main groove 4 is preferably, for example, 6.0~9.0mm.
As shown in figure 1, having marked off a pair of middle land parts 5,5 and a pair of tire-shoulder land parts 6,6 in fetus face 2.
Each middle land part 5 is located between shoulder main groove 3 and central main groove 4.Each tire-shoulder land part 6 is located at the wheel of shoulder main groove 3
Tire is axially external.
Middle land part 5 includes：The first middle land part 11 located at a tire equator C side side；And be located at
Second middle land part 12 of tire equator C the opposing party side.In the present embodiment, the first middle land part 11 is located at
Vehicle interior side A.Second middle land part 12 is located at vehicle outside B.
Fig. 3 shows the enlarged drawing of the first middle land part 12 in middle land part 11 and second.As shown in figure 3,
The first middle land part 12 in middle land part 11 and second is configured to be provided only with the intermediate knife that ditch width is below 1.5mm
The ribbed of groove 13.The middle land part 12 in such first middle land part 11 and second will not be produced because of horizontal stroke in motion
Pumping sound caused by ditch, therefore, it is possible to improve noiseproof feature.Also, in such first middle land part 11 and second
Between land part 12 have high tire rigid circumference, so as to play excellent manipulation stability.
Middle cutter groove 13 includes：The first middle cutter groove 14 located at the first middle land part 11；And in second
Between land part 12 the second middle cutter groove 15.
First middle cutter groove 14 is formed as the substantially arc-shaped towards the circumferential side side protrusion of tire.Second middle cutter groove 15
Be formed as the substantially arc-shaped towards the circumferential the opposing party side protrusion of tire.In the middle of these above-mentioned first middle cutter grooves 14 and second
Cutter groove 15, due to including the edge of various directions, therefore, it is possible to effectively maintain wet road performance.Also, in the middle of such first
The middle cutter groove 15 of cutter groove 14 and second can make the frequency dispersion of the impact sound on the road surface of each middle land part 11,12, from
And make noise whitening.
First middle cutter groove 14 includes for example half-open cutter accommodating slot 21 and standard-sized sheet cutter accommodating slot 22.
One end 21a of half-open cutter accommodating slot 21 is connected with central main groove 4 or shoulder main groove 3, and other end 21b is in the part of land
Form end.
Half-open cutter accommodating slot 21 includes the such as first half-open cutter accommodating slot 24 of half-open cutter accommodating slot 23 and second.First semi-open knife
Such as its one end 23a of groove 23 is connected with central main groove 4 and other end 23b forms end in the part of land.Second semi-open knife
Such as its one end 24a of groove 24 is connected with shoulder main groove 3 and other end 24b forms end in the part of land.
The first half-open cutter accommodating slot 24 of half-open cutter accommodating slot 23 and second is arranged on same round and smooth circular arc line each other, thus shape
Into half-open cutter accommodating slot to 27.
Standard-sized sheet cutter accommodating slot 22 is communicated to shoulder main groove 3 from central main groove 4.Such standard-sized sheet cutter accommodating slot 22 can be carried effectively
High wet road performance.
In the first middle land part 11 of present embodiment, such as half-open cutter accommodating slot to 27 with standard-sized sheet cutter accommodating slot 22 along wheel
Tire is circumferentially arranged alternately.As a result, the stiffness distribution of the first middle land part 11 is smoothened, so as to suppress eccentric wear
Damage.
Second middle cutter groove 15 includes the first half-open cutter accommodating slot 24 of half-open cutter accommodating slot 23 and second.First half-open cutter accommodating slot 23
Such as its one end 23a is connected with central main groove 4 and other end 23b forms end in the part of land.Second half-open cutter accommodating slot 24
Such as its one end 24a is connected with shoulder main groove 3 and other end 24b forms end in the part of land.
The second half-open cutter accommodating slot 24 located at the second middle land part 12 includes for example small-sized second half-open cutter accommodating slot 25
With the large-scale second half-open cutter accommodating slot 26.Small-sized second half-open cutter accommodating slot 25 is for example on the middle land than extending along tire equator C
The width centreline 5c of part 5 more forms end by the position of the side of shoulder main groove 3.Large-scale second half-open cutter accommodating slot 26 for example than
The width centreline 5c more forms end by the position of the side of central main groove 4.
Small-sized second half-open cutter accommodating slot 25 is for example circumferentially arranged alternately with the large-scale second half-open cutter accommodating slot 26 along tire.By
This, is able to maintain that the rigidity on the inside of the tire axial of the second middle land part 12, improves wet road performance.
Also, being provided with the second middle land part 12 of such cutter groove has than being provided with above-mentioned standard-sized sheet cutter accommodating slot 22
The higher tire rigid circumference in the first middle land part 11.Therefore, the first middle land in middle land part 11 and second
Part 12 is mutually coordinated and balancedly improves wet road performance and manipulation stability.
As shown in figure 1, tire-shoulder land part 6 includes：On the outside of the tire axial of the first middle land part 11
One tire-shoulder land part 31；And the second tire-shoulder land part on the outside of the tire axial of the second middle land part 12
32。
In substantially arc-shaped of the first tire-shoulder land part 31 provided with a plurality of the opposing party side protrusion circumferential towards the tire
The first tire-shoulder transverse groove 33.That is, the first tire-shoulder transverse groove 33 is towards identical with the second middle cutter groove 15 of the second middle land part 12
Direction protrusion.
Second of the substantially arc-shaped provided with a plurality of side side protrusion circumferential towards tire in the second tire-shoulder land part 32
Tire-shoulder transverse groove 34.That is, the second tire-shoulder transverse groove 34 towards with the first of the first middle land part 11 the middle identical direction of cutter groove 14
Protrusion.
Such tire-shoulder transverse groove 34 of first tire-shoulder transverse groove 33 and second can suppress compared with the ditch linearly extended
The circumferential deformation of the tire of tire-shoulder land part 6, and excellent drainage performance can be played.Therefore, it is possible to effectively maintain
Manipulate stability and wet road performance.Also, the first tire-shoulder transverse groove 33 and the second tire-shoulder transverse groove 34 can make pumping during traveling
The frequency dispersion of sound, so that noise whitening.
Each first tire-shoulder transverse groove 33 and each second tire-shoulder transverse groove 34 have one be located at most by tire circumference respectively
First ground end 35 of square side (in the present embodiment, being upside in Fig. 1) and the opposing party side positioned at most roller tire circumference
Second ground end 36 of (in the present embodiment, being downside in Fig. 1).
Each first ground end 35A of first tire-shoulder transverse groove 33 is respectively arranged at, horizontal with the second tire shoulder in tire circumference
Positions different each first ground end 35B of ditch 34.That is, each first ground end 35A of the first tire-shoulder transverse groove 33 relative to
Through the second tire-shoulder transverse groove 34 each first ground end 35B the imaginary line 37 extended along tire axial in tire circumference it is wrong
Open position.
Each second ground end 36A of first tire-shoulder transverse groove 33 is respectively arranged at, horizontal with the second tire shoulder in tire circumference
Positions different each second ground end 36B of ditch 34.That is, each second ground end 36A of the first tire-shoulder transverse groove 33 relative to
Through the second tire-shoulder transverse groove 34 each second ground end 36B the imaginary line 38 extended along tire axial in tire circumference it is wrong
Open position.
The arrangement of such first tire-shoulder transverse groove 33 and the second tire-shoulder transverse groove 34 more than so that each first ground end
35 and each second ground end 36 the ground connection opportunity to road surface disperse so that effectively make caused by the edge of ditch impact
The pumping sound whitening of sound and ditch.
The maximum tire-shoulder transverse groove 34 of angle, θ 1 and second relative to tire axial of first tire-shoulder transverse groove 33 it is relative
In the maximum angle, θ 2 of tire axial be preferably more than 10 °, more preferably more than 15 °, and preferably less than 30 °, more preferably
For less than 25 °.Thereby, it is possible to the rigidity for the tire axial for maintaining tire-shoulder land part 6, so as to maintain to manipulate stability, and carry
High wet road performance.
The ditch width W3 of the first tire-shoulder transverse groove 33 and ditch width W4 of the second tire-shoulder transverse groove 34 is preferably more than 2.0mm,
More preferably more than 2.2mm, and preferably below 3.0mm, more preferably below 2.5mm.Thereby, it is possible to maintain manipulation stable
Property, and obtain excellent wet road performance.
Fig. 4 shows the enlarged drawing of the first tire-shoulder land part 31.As shown in figure 4, the tire axle of the first tire-shoulder transverse groove 33
To inner 33i form end in the first tire-shoulder land part 31.Thereby, it is possible to improve the firm of the first tire-shoulder land part 31
Property, and suppress the pumping sound of the first tire-shoulder transverse groove 33.
Such as tire shoulder cutter groove 41 is provided with the first tire-shoulder land part 31.Tire shoulder cutter groove 41 is for example from the first tire-shoulder transverse groove 33
Inner 33i be communicated to shoulder main groove 3.Such tire shoulder cutter groove 41 can effectively improve wet road performance.
First tire-shoulder transverse groove 33 includes band cutter groove the first tire-shoulder transverse groove 33A provided with tire shoulder cutter groove 41 and is not provided with tire shoulder knife
Groove 41 without the first tire-shoulder transverse groove of cutter groove 33B.With cutter groove the first tire-shoulder transverse groove 33A and without the first tire-shoulder transverse groove of cutter groove 33B for example
Circumferentially it is arranged alternately along tire.Thereby, it is possible to balancedly improve manipulation stability and wet road performance.
In the present embodiment, the first tire-shoulder land part 31 is located at vehicle interior side when vehicle is installed.Therefore, straight line is worked as
During traveling, in the first tire-shoulder land part 31, effect has big ground pressure.Therefore, above-mentioned the first tire-shoulder transverse groove of band cutter groove 33A
And can suppress the partial wear of the first tire-shoulder land part 31 without the first tire-shoulder transverse groove of cutter groove 33B, and can effectively carry
Wet road performance during high straight-line travelling.
Fig. 5 shows the enlarged drawing of the second tire-shoulder land part 32.As shown in figure 5, the tire axle of the second tire-shoulder transverse groove 34
To inner 34i form end in the second tire-shoulder land part 32.
Second tire-shoulder land part 32 is preferably for example including flat part 42.Flat part 42 is for example in the second tire-shoulder transverse groove 34
It is not provided with ditch and cutter groove on the inside of each inner 34i tire axial, and along the circumferentially continuous extension of tire.Such second tire shoulder land
Ground part 32 is able to maintain that wet road performance and effectively improves manipulation stability.
In the present embodiment, the second tire-shoulder land part 32 is located at vehicle outside when vehicle is installed.Therefore, turning is worked as
When, in the second tire-shoulder land part 32, effect has big ground pressure.Therefore, the energy of flat part 42 of the second tire-shoulder land part 32
Enough effectively improve manipulation stability during turning.
More than, detailed narration has been carried out to particularly preferred embodiment of the invention, but the present invention is not limited to diagram
Embodiment, it can be deformed into various modes and be carried out.
Embodiment
Specification based on table 1 and manufactured experimently with Fig. 1 motif size be 195/65R15 pneumatic tire.Make
Following tire is manufactured experimently for comparative example, i.e.,：As shown in fig. 6, the first ground end of the first tire-shoulder transverse groove and the second ground connection
End is respectively arranged at is located at phase with the first ground end and the second ground end of the second tire-shoulder transverse groove in tire circumference
Same position.And manipulation stability, wear resistance, wet road performance and the noiseproof feature of each experiment tire are tested.
The common-use size and test method of each experiment tire are as follows.
Wheel rim is installed：15×6J
Inner pressure of tire：230kPa
＜ manipulation stability ＞
It is stable to the manipulation when pitch ring test route is travelled by the sense organ of driver using following test vehicles
Property is evaluated.Result is is represented using comparative example as 100 to punctuate and annotate, numerical value is bigger represent to manipulate stability it is better.
Test vehicle：Capacity 1800cc, front wheel drive car
Test tire installation location：Full wheel
＜ wear resistances ＞
Using above-mentioned test vehicle, to above-mentioned ring test route is up sailed certain distance when each experiment tire
Wear extent is measured.As a result represented, be indicated by 100 index of comparative example with the inverse of tire wear amount.Numerical value
Bigger expression wear resistance is better.
＜ wet road performances ＞
It is being 5mm provided with the depth of water and the radius 100m in puddle that length is 20m bituminous paving using above-mentioned test vehicle
Upper traveling, the transverse acceleration (horizontal G) to front-wheel is measured.As a result represented with speed for 50~80km/h average horizontal G,
It is indicated by 100 index of comparative example.Numerical value is bigger to represent that wet road performance is better.
＜ noiseproof features ＞
Under the following conditions, to using above-mentioned test vehicle with 100km/h speed at road noise (road noise)
Internal car noise when being travelled in measurement road (asperities asphalt road) is measured.Evaluation represents with the inverse of the value of internal car noise,
It is indicated by 100 index of the value of comparative example.Numerical value is bigger to represent that internal car noise is smaller.
Measuring method：The sound press grade of the peak value of the gas column sonorant near narrow frequency domain 240Hz is measured using microphone.
The position of microphone：The window of operator seat is picked up the ears side
Result of the test is as shown in table 1.
Table 1
From the result of experiment it has been confirmed that the pneumatic tire of embodiment is able to maintain that manipulation stability and wet road performance,
And noiseproof feature can be improved.
Claims (6)
1. a kind of pneumatic tire, the pneumatic tire in fetus face by being provided with the both sides of tire equator and most leaning on tyre surface earth terminal
A pair of shoulder main grooves of the side along the circumferentially continuous extension of tire and prolong between the pair of shoulder main groove along tire is circumferentially continuous
The central main groove stretched, and provided with a pair middle land parts, Yi Ji between the shoulder main groove and the central main groove
A pair of tire-shoulder land parts on the outside of the tire axial of each shoulder main groove,
The pneumatic tire is characterised by,
The middle land part includes：The first middle land part located at a side side of the tire equator；And be located at
Second middle land part of the opposing party side of the tire equator,
The first middle land part and the second middle land part are formed as being provided only with ditch width in below 1.5mm
Middle cutter groove ribbed,
The middle cutter groove includes：Substantially the first middle cutter groove of arc-shaped, it is located at the described first middle land part, and court
The circumferential side side protrusion of tire；And substantially the second middle cutter groove of arc-shaped, it is located at the described second middle land part,
And towards the circumferential the opposing party side protrusion of tire,
The tire-shoulder land part includes：The first tire-shoulder land on the outside of the tire axial of the described first middle land part
Part；And the second tire-shoulder land part on the outside of the tire axial of the described second middle land part,
The substantially arc-shaped provided with a plurality of the opposing party side protrusion circumferential towards the tire in the first tire-shoulder land part
First tire-shoulder transverse groove,
The of the substantially arc-shaped provided with a plurality of side side protrusion circumferential towards the tire in the second tire-shoulder land part
Two tire-shoulder transverse grooves,
Each first tire-shoulder transverse groove and each second tire-shoulder transverse groove have respectively：Positioned at one most by tire circumference
First ground end of square side；And positioned at the second ground end for most leaning on the circumferential the opposing party side of the tire,
Each first ground end of first tire-shoulder transverse groove is respectively arranged at, with second tire shoulder in tire circumference
The different position of each first ground end of traverse furrow,
Each second ground end of first tire-shoulder transverse groove is respectively arranged at, with second tire shoulder in tire circumference
The different position of each second ground end of traverse furrow,
The direction that the pneumatic tire is installed to vehicle is designated,
The first middle land part and the first tire-shoulder land part are located at more red than the tire when vehicle is installed
Road more leans on the position of vehicle interior side,
The inner of the tire axial of first tire-shoulder transverse groove forms end in the first tire-shoulder land part,
It is provided with the first tire-shoulder land part from described the inner of first tire-shoulder transverse groove and is communicated to the shoulder main groove
Tire shoulder cutter groove,
First tire-shoulder transverse groove includes：The tire-shoulder transverse groove of band cutter groove first provided with the tire shoulder cutter groove；And be not provided with described
Tire shoulder cutter groove without the tire-shoulder transverse groove of cutter groove first,
The tire-shoulder transverse groove of band cutter groove first is circumferentially arranged alternately with described without the tire-shoulder transverse groove of cutter groove first along tire.
2. pneumatic tire according to claim 1, it is characterised in that
The middle cutter groove includes：First half-open cutter accommodating slot, its one end is connected with the central main groove, and the other end is in described
Between end is formed in the part of land；And the second half-open cutter accommodating slot, its one end is connected with the shoulder main groove, and the other end is in institute
State formation end in middle land part.
3. pneumatic tire according to claim 2, it is characterised in that
In the described first middle land part along tire circumferentially alternately provided with the described first half-open cutter accommodating slot and a plurality of from described
Centre tap drain is communicated to the standard-sized sheet cutter accommodating slot of the shoulder main groove.
4. the pneumatic tire according to Claims 2 or 3, it is characterised in that
The second half-open cutter accommodating slot includes：Small-sized second half-open cutter accommodating slot, it is than along described in tire equator extension
The width centreline of middle land part more forms end by the position of the shoulder main groove side；And large-scale second semi-open knife
Groove, it is more forming end than the width centreline by the position of the central main groove side,
The small-sized second half-open cutter accommodating slot is circumferentially alternately provided with along tire in the described second middle land part and described large-scale
Second half-open cutter accommodating slot.
5. the pneumatic tire according to any one in claims 1 to 3, it is characterised in that
The inner of the tire axial of second tire-shoulder transverse groove forms end in the second tire-shoulder land part,
Second tire-shoulder land be partly comprised on the inside of each inner tire axial be not provided with ditch and cutter groove and along wheel
The flat part of the circumferentially continuous extension of tire.
6. pneumatic tire according to claim 4, it is characterised in that
The inner of the tire axial of second tire-shoulder transverse groove forms end in the second tire-shoulder land part,
Second tire-shoulder land be partly comprised on the inside of each inner tire axial be not provided with ditch and cutter groove and along wheel
The flat part of the circumferentially continuous extension of tire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014034462A JP5947824B2 (en) | 2014-02-25 | 2014-02-25 | Pneumatic tire |
| JP2014-034462 | 2014-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104859378A CN104859378A (en) | 2015-08-26 |
| CN104859378B true CN104859378B (en) | 2017-10-13 |
Family
ID=53905736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510084799.1A Active CN104859378B (en) | 2014-02-25 | 2015-02-16 | Pneumatic tire |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5947824B2 (en) |
| CN (1) | CN104859378B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6539189B2 (en) * | 2015-11-18 | 2019-07-03 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
| JP6653578B2 (en) | 2016-01-13 | 2020-02-26 | 株式会社ブリヂストン | tire |
| JP6790443B2 (en) * | 2016-05-10 | 2020-11-25 | 横浜ゴム株式会社 | Pneumatic tires |
| JP6784066B2 (en) | 2016-06-08 | 2020-11-11 | 住友ゴム工業株式会社 | Pneumatic tires |
| JP2017226368A (en) * | 2016-06-24 | 2017-12-28 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP6750358B2 (en) | 2016-07-11 | 2020-09-02 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP6790663B2 (en) * | 2016-09-26 | 2020-11-25 | 住友ゴム工業株式会社 | tire |
| EP3323637B1 (en) | 2016-11-22 | 2019-09-04 | Sumitomo Rubber Industries, Ltd. | Tire |
| JP6312783B1 (en) * | 2016-12-09 | 2018-04-18 | 東洋ゴム工業株式会社 | Pneumatic tire |
| JP6809239B2 (en) * | 2017-01-13 | 2021-01-06 | 横浜ゴム株式会社 | Pneumatic tires |
| CN109421443A (en) * | 2017-08-30 | 2019-03-05 | 住友橡胶工业株式会社 | Pneumatic belt tire |
| JP6950367B2 (en) * | 2017-08-30 | 2021-10-13 | 住友ゴム工業株式会社 | Pneumatic radial tire |
| JP6353621B2 (en) * | 2018-03-19 | 2018-07-04 | 東洋ゴム工業株式会社 | Pneumatic tire |
| EP3549793B1 (en) * | 2018-04-06 | 2021-02-24 | Sumitomo Rubber Industries, Ltd. | Tyre |
| JP7087641B2 (en) * | 2018-05-02 | 2022-06-21 | 住友ゴム工業株式会社 | tire |
| JP7205241B2 (en) * | 2019-01-15 | 2023-01-17 | 住友ゴム工業株式会社 | tire |
| JP7183961B2 (en) * | 2019-06-04 | 2022-12-06 | 横浜ゴム株式会社 | pneumatic tire |
| CN112046205B (en) * | 2019-06-05 | 2023-12-01 | 住友橡胶工业株式会社 | Tire with a tire body |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2261064A1 (en) * | 2009-06-10 | 2010-12-15 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
| CN102529595A (en) * | 2010-12-27 | 2012-07-04 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN104057785A (en) * | 2013-03-22 | 2014-09-24 | 住友橡胶工业株式会社 | Pneumatic tire |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4015573B2 (en) * | 2003-02-28 | 2007-11-28 | 住友ゴム工業株式会社 | Pneumatic tire |
| CN101454167B (en) * | 2006-11-24 | 2010-12-29 | 横滨橡胶株式会社 | Pneumatic tire |
| JP5438719B2 (en) * | 2011-04-20 | 2014-03-12 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP5659101B2 (en) * | 2011-07-26 | 2015-01-28 | 株式会社ブリヂストン | tire |
| JP2013078984A (en) * | 2011-10-03 | 2013-05-02 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP5613273B2 (en) * | 2013-02-14 | 2014-10-22 | 住友ゴム工業株式会社 | Pneumatic tire |
-
2014
- 2014-02-25 JP JP2014034462A patent/JP5947824B2/en active Active
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- 2015-02-16 CN CN201510084799.1A patent/CN104859378B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2261064A1 (en) * | 2009-06-10 | 2010-12-15 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
| CN102529595A (en) * | 2010-12-27 | 2012-07-04 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN104057785A (en) * | 2013-03-22 | 2014-09-24 | 住友橡胶工业株式会社 | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104859378A (en) | 2015-08-26 |
| JP5947824B2 (en) | 2016-07-06 |
| JP2015157600A (en) | 2015-09-03 |
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