CN103998257B - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
- Publication number
- CN103998257B CN103998257B CN201280061892.5A CN201280061892A CN103998257B CN 103998257 B CN103998257 B CN 103998257B CN 201280061892 A CN201280061892 A CN 201280061892A CN 103998257 B CN103998257 B CN 103998257B
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- China
- Prior art keywords
- tire
- major trough
- pattern groove
- transverse
- pneumatic tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 210000002421 cell wall Anatomy 0.000 claims abstract description 42
- 210000003754 fetus Anatomy 0.000 claims description 14
- 230000003321 amplification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000001215 vagina Anatomy 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
- B60C11/11—Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0311—Patterns comprising tread lugs arranged parallel or oblique to the axis of rotation
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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
- B60C11/0311—Patterns comprising tread lugs arranged parallel or oblique to the axis of rotation
- B60C11/0316—Patterns comprising tread lugs arranged parallel or oblique to the axis of rotation further characterised by the groove cross-section
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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
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1307—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls
- B60C11/1315—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls having variable inclination angles, e.g. warped groove walls
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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
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/14—Tyres specially adapted for particular applications for off-road use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
It is an object of the invention to provide the pneumatic tire of a kind of spoil disposal performance having and improving.In this pneumatic tire, be formed in tread surface on tire width direction extend and at one end opening to the transverse pattern groove of tyre surface end.Airtyred feature is, at least one in the cell wall of the both sides being positioned in tire circumference of each transverse pattern groove has curved face part, this curved face part includes the curved surface of reservation shape, in the curved surface of reservation shape, it is perpendicular to the opening of transverse pattern groove to the cross section curve of the opening edge of tread surface or the extended line that is perpendicular to this opening edge and there is the curve protruded towards the side contrary with side, transverse pattern groove place, and this song curvature of a curve is along with tapering into from tire equator side towards the traveling of tyre surface side.
Description
Technical field
The present invention relates to a kind of pneumatic tire, particularly relate to the pneumatic tire with the spoil disposal performance improved.
Background technology
Typically require have for being suitable to the tire of the up vehicle sailed on muddy ground: for utilizing in tread surface
Groove grabs ground so that tire can pedal out the earth-catching property on ground；And it is therefore prevented from groove for being discharged by the mud of blocking groove
The spoil disposal performance blocked by mud.
In view of the foregoing, it is used for being suitable to the tire of the up light truck sailed on muddy ground to be provided with traditionally at wheel
Extend on tire width and at one end opening to the transverse pattern groove of the tyre surface end in tread surface.Pattern groove is used for capturing
Mud is also so that truck can pedal out ground.Additionally, have been presented for following pneumatic tire, wherein, transverse pattern groove has
Cell wall, cell wall with wall angle (that is, tread surface and cell wall the angle formed), this wall angle from tire equator side towards tire
Side, face is gradually increased to prevent transverse pattern groove by mud blocking (for example, see patent documentation 1: Japanese Unexamined Patent Publication 2001-55014
Number publication).More specifically, have transverse pattern groove according to the pneumatic tire of patent documentation 1, its cell wall is towards being arranged in laterally flower
Land portion between groove, gradually tilt towards tyre surface side largely.Airtyred such groove makes its width gradually
Towards tyre surface side and be increasingly towards the radial outside of tire and broaden.This make block transverse pattern groove mud can be along with tire
Rotate and be stably discharged to the tire width direction of tire and tire outside radially.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2001-55014 publication
Summary of the invention
The problem that invention is to be solved
Unfortunately, there is the above-mentioned conventional pneumatic of the transverse pattern groove wall angle being gradually increased towards tyre surface side
Do not obtain the spoil disposal performance substantially improved.Therefore it is an object of the invention to provide filling of a kind of spoil disposal performance having and improve
Air filled tyre.
For solving the scheme of problem
It is contemplated that advantageously solve the problems referred to above.Pneumatic tires according to the present invention, it is formed on fetus face surface
Having transverse pattern groove, described transverse pattern groove extends on tire width direction and one end open is in tyre surface end, described horizontal flower
At least one in the cell wall of the both sides laid respectively in tire circumference of groove has curved face part, and described curved face part is by preboarding
The curved surface of shape is formed；The curved surface of described reservation shape is as follows: be perpendicular to described transverse pattern groove towards described fetus face surface
Opening edge or the extended line that is perpendicular to described opening edge direction on cross section curve by towards with described transverse pattern groove institute
The curve that the side contrary in side is protruded is formed, and the curvature of described cross section curve is gone towards tyre surface side from tire equator side
It is gradually reduced.
During about transverse pattern groove as used herein, phrase " extension on tire width direction " is not only used to describe horizontal stroke
The configuration extended along the width of tire simply to pattern groove, but also describe transverse pattern groove and be parallel to tire
The configuration that extends obliquely of the direction of width.Further, phrase " curvature of cross section curve is gradually reduced " is used for describing: work as cross section
Curve is in width (that is, vertical with the opening edge of the opening of transverse pattern groove to tread surface or prolongation with opening edge
The direction that line is vertical) when being divided into two parts, three parts, four parts or more parts in short transverse (that is, tire radially),
The curvature in these cross sections of curved face part is rendered as being gradually reduced.
The effect of invention
Pneumatic tires according to the present invention is that the vehicle being suitable to travel on muddy ground etc. provides and substantially improves
Spoil disposal performance.
Accompanying drawing explanation
Fig. 1 is the partial plan of the representative tyre surface of pneumatic tires according to the present invention；
Fig. 2 is the amplification view in the pattern block land portion, airtyred shoulder side shown in Fig. 1；
Fig. 3 (a) illustrates pattern block land, the shoulder side portion of the Fig. 2 observed from the direction of the arrow A shown in Fig. 2, Fig. 3 (b)
Pattern block land, the shoulder side portion of the Fig. 2 observed from the direction of the arrow B shown in Fig. 2 is shown；
Shoulder shown in Fig. 2 that Fig. 4 (a), Fig. 4 (b) and Fig. 4 (c) intercept respectively along line I-I, II-II and III-III
The sectional view in pattern block land, side portion；And
Pattern block land, the side portion of takeing on shown in Fig. 2 that Fig. 5 (a) and Fig. 5 (b) intercept respectively along line IV-IV and V-V
Sectional view.
Detailed description of the invention
Embodiments of the present invention are described the most in further detail.The present invention provides a kind of acquisition
The spoil disposal performance that improves also can advantageously be used in particular for being suitable to the pneumatic tire of the up vehicle sailed on muddy ground.
Fig. 1 is the partial plan of the exemplary airtyred tyre surface of the present invention.Pneumatic tire shown in Fig. 1 is permissible
As preferably but not necessarily with the tire acting on light truck.
Pneumatic tire shown in Fig. 1 includes tread surface 100, and it is formed: central authorities' major trough 1, it is in the equator of tire
On line CL circumferentially extending along tire；With two major troughs 2, it is arranged in outside on the tire width direction of central authorities' major trough 1 two
(that is, near tyre surface end TE side), and circumferentially extending along tire.Tread surface 100 also includes: multiple transverse pattern grooves 3, each laterally
Extend along tire width direction between in major trough 2 one and tyre surface end TE of pattern groove 3 one；With multiple transverse grooves 4,
Each transverse groove 4 extends along tire width direction between and central authorities' major trough 1 in the major trough 2 adjacent with central major trough 1.Respectively
Major trough 2 can be referred to as " neighboring main grooves ".
During about transverse pattern groove as used herein, phrase " upwardly extends in tire week " and is used for not only describing laterally flower
Groove is simply along the circumferentially extending configuration of tire, but also describes transverse pattern groove and the side of the circumference that is parallel to tire
To the configuration extended obliquely.
Tread surface 100 farther includes to take on pattern block land, side portion 10 and center side pattern block land portion 20.Shoulder side pattern block
Land portion 10 is limited by major trough 2, transverse pattern groove 3 and tyre surface end TE.Center side pattern block land portion 20 is by central authorities major trough 1, major trough 2 and
Transverse groove 4 limits.
In the embodiment as shown, central authorities' major trough 1 has substantially in the plane graph of pneumatic tires according to the present invention
Rectilinear form, and extend continuously in tire circumference.But, central authorities' major trough 1 is not limited to any given shape, and can be
Airtyred plane graph has zigzag shape.Additionally, in pneumatic tires according to the present invention, central authorities' major trough can differ
Surely it is to be formed along tire equator line CL.But, central authorities' major trough is the most such as formed at the central part of tread surface, in order to obtain
Obtain high drainage performance.Even if when the load on tire is too light to such an extent as to tire may only contact the ground of little area, or
Even if specifically when the vehicle being equipped with tire unsupported any loading the unloaded condition of vehicle (that is, time), being formed at tire
Such central authorities major trough of the central part on surface, face also will obtain high drainage performance.Central authorities' major trough is preferably formed to flat
Straight line in the figure of face is to obtain high drainage performance.
In the embodiment as shown, a pair major trough 2 of the both sides of central authorities' major trough 1 is in pneumatic tires according to the present invention
Plane graph has substantially zigzag shape, and extends continuously in tire circumference.But, these major troughs 2 are not limited to any specific
Shape, and can have rectilinear form in airtyred plane graph.
Each transverse pattern groove 3 at one end opening is in tyre surface end TE, and in other end opening to major trough 2
One.In the embodiment as shown, transverse pattern groove 3 has along tire circumference towards a side in the plane graph of tire
To the curve shape protruded, and extend obliquely relative to the direction being parallel to tyre width.But, transverse pattern groove 3 is not
It is limited to any given shape.
Each transverse groove 4 at one end opening is disposed adjacent to central authorities' major trough 1 and at other end opening to central major trough 1
And in all upwardly extending major troughs 2 of tire.Each major trough 2 can be referred to as " neighboring main grooves ".Transverse groove 4 is according to this
Bright airtyred plane graph has curve shape, and extends obliquely relative to the direction being parallel to tyre width.
But, transverse groove 4 is not limited to any given shape.Additionally, the A/F towards tread surface 100 of transverse groove 4 is in central authorities
Major trough 1 side constriction.But, the position at opening constriction place is not limited to such configuration.Term " width of the opening of transverse groove 4 "
Refer to the distance between the relative cell wall of the open end at transverse groove 4 recorded in tire circumference.
Each shoulder pattern block land, the side portion 10 being formed in the tread surface 100 of tire has generally trapezoidal in tread surface
Shape.The each center side pattern block land portion 20 being formed in tread surface 100 then has substantially jib in tread surface
(staysail) shape.
In the embodiment as shown, the cell wall of the both sides in the tire circumference of transverse pattern groove 3, or shoulder side pattern block
Sidewall in the tire circumference in land portion 10 has predetermined shape.Specifically, side in the tire circumference of transverse pattern groove 3 it is positioned at
Cell wall in one there is curved face part 35, it is formed by the curved surface of reservation shape.It is positioned in the tire circumference of transverse pattern groove 3
Another cell wall of opposite side has tapered portion 36, and it has tapered of reservation shape.
In the present invention, as long as at least one in the cell wall of transverse pattern groove has curved surface, another cell wall can be to appoint
What shape.Additionally, the whole width that cell wall can be crossed over by curved face part on cell wall or tapered portion is arranged, or cell wall can be crossed over
A part setting.But, in order to make the potential advantages in curved face part or tapered portion maximize, curved face part or tapered portion preferably across
The more whole width of cell wall is arranged.
Seeing the Fig. 2 of the amplification view showing shoulder pattern block land, side portion 10, curved face part 35 is crossed over and is positioned at transverse pattern
In the tire circumference of groove 3, the most whole width of in the cell wall of side is arranged.This can also be from the arrow shown from Fig. 2
The Fig. 3 (a) in shoulder pattern block land, the side portion 10 observed on head A direction finds out.
As shown in Figure 1, Figure 2 with Fig. 3 (a) Suo Shi, the cell wall with curved face part 35 has rake towards the opening part of major trough 2
37.The height of the bottom of the distance transverse pattern groove 3 of rake 37 is gradually lowered towards major trough 2.More specifically, at shoulder side decorative pattern
In the plane graph in block land portion 10, the cell wall with curved face part 35 has rake 37:(i in the region surrounded by such as lower part)
The extended line of the tire of the sidewall of the close major trough 2 in shoulder pattern block land, side portion 10 external end edge radially；And transverse pattern (ii)
The opening edge 31 of groove 3 is vertically through the imaginary line (not shown) of the end of the close major trough of opening edge 31；(iii) cell wall
Tire interior ora terminalis radially.Curved face part 35 crosses over the whole width extension having generally comprised rake 37 at interior cell wall.
As respectively illustrated Fig. 4 (a) of sectional view, Fig. 4 (b) of line I-I, II-II and III-III intercepting along Fig. 2
With Fig. 4 (c) Suo Shi, the curved surface of the reservation shape defining curved face part 35 meets following condition (1) and (2).
(1) in vertical with the opening edge 31 leading to tread surface 100 of transverse pattern groove 3 or with opening edge 31 prolongation
Cross section curve 35A that side vertical for line EL looks up into, towards the side contrary with side, transverse pattern groove 3 place (that is, towards shoulder
The inside in pattern block land, side portion 10) protrude.
(2) curvature of cross section curve 35A goes to be gradually reduced towards tyre surface end TE side from tire equator line CL side.
As shown in Fig. 2 and Fig. 4 (a) to Fig. 4 (c), exemplary airtyred define curved face part 35 there is preboarding
The curved surface of shape also meets following condition (3) and (4).
(3) between tire RADIAL and the cross section curve 35A of the tire outer end 35B radially of cross section curve 35A
Distance on the direction being perpendicular to tire RADIAL goes to be gradually increased towards tire radial direction inner side.In other words, transverse pattern groove 3
Wall towards shoulder direction from pattern block land, side portion 10 to prominent place, the inside of transverse pattern groove 3 tilt.
(4) in the plane graph of tread surface 100, the opening edge 31 towards tread surface 100 of transverse pattern groove 3 is with bent
Distance on the direction vertical with opening edge or the extended line EL of opening edge 31 between the tire radial inner end edge 33 of face 35
And the distance on the direction vertical with the extended line EL of opening edge 31 is from wheel between the tire radial inner end edge 33 of curved face part 35
Abnormal red skin of infant diatom CL side is gone to be gradually reduced towards tyre surface end TE side.
In the present invention, above-mentioned curved surface is not limited to any given shape, although can be by when being perpendicular to transverse pattern groove 3
Opening edge 31 or to meet the cross section of following condition (5) to (7) when looking up bent the side of the extended line EL that is perpendicular to opening edge 31
Line 35A limits.
(5) cross section curve 35A by cross point P, cross point P be in cross section (that is, be perpendicular to opening edge 31 or open
On the direction that the direction of the extended line EL of peristoma 31 is parallel) in the direction of the width by the line of cross section curve 35A decile with in cross section
In in the height direction (i.e., at tire radially) by the tire in quadrifid for cross section curve 35A three lines radially
The cross point of the line of inner side.
(6) line extended the most in the height direction is contacted at the tire of cross section curve 35A outer end 35B radially
(that is, tire RADIAL).
(7) line extended the most in the direction of the width is contacted at the tire of cross section curve 35A inner 35C radially
(that is, parallel with the line of the opening edge 31 being perpendicular to transverse pattern groove 3 or the extended line EL that is perpendicular to opening edge 31 line).
As shown in illustrate Fig. 2 of the plane graph in shoulder pattern block land, side portion 10 with magnification ratio, tapered portion 36 crosses over and is positioned at horizontal stroke
In the tire circumference of pattern groove 3, the whole width of another in the cell wall of opposite side is arranged.This can also be from Fig. 3 (b)
Finding out, Fig. 3 (b) shows pattern block land, the shoulder side portion 10 observed from the direction of arrow B shown in Fig. 2.
In the plane graph of tread surface 100 as shown in Figure 2, tapered portion 36 with transverse pattern groove 3 towards tire
The direction that the opening edge 32 (opening edge of side contrary with side, opening edge 31 place i.e., in the circumferential) on surface, face 100 is vertical
On length go to be gradually increased towards tyre surface end TE side from tire equator line CL side.As shown in Fig. 3 (b), tapered portion 36 horizontal
(cell wall or specifically, measured from tire interior ora terminalis 34 radially is high for height that the bottom from groove of pattern groove 3 starts to measure
Degree) it is gradually reduced towards tyre surface end TE side from tire equator line CL side.
As shown in the Fig. 5 (a) and Fig. 5 (b) in the cross section of line IV-IV and V-V intercepting along Fig. 2 is shown respectively, it is positioned at horizontal stroke
In the tire circumference of pattern groove 3, the part in addition to tapered portion 36 of another in the cell wall of opposite side is along tire radially
Extend.
Additionally, as it is shown in figure 1, exemplary airtyred each center side pattern block land portion 20 includes jut 21, its court
In the tire circumference in pattern block land portion, centrally disposed side 20, the transverse groove 4 of side is prominent.More specifically, center side pattern block
Land portion 20 includes in plan view to the internal prominent general triangular jut 21 of transverse groove 4.Jut 21 is at center side flower
Side in the tire circumference in stricture of vagina block land portion 20 is formed near central authorities' major trough 1.Jut 21 make transverse groove 4 central authorities major trough 1
The A/F at place narrows.
According to the present invention, jut can be with the both sides in the circumference in pattern block land portion, centrally disposed side.
In the embodiment as shown, as it is shown in figure 1, the side being provided with jut 21 in center side pattern block land portion 20
The cell wall being formed with jut 21 of wall, i.e. transverse groove 4 has curved surface 41, this curved surface 41 at the bearing of trend with transverse groove 4
The vertical length on direction is gradually increased towards jut 21.But, the shape of cell wall is not particularly restricted in this.
In the embodiment as shown, the curved face part 35 including the curved surface with reservation shape of transverse pattern groove 3
In wall one ensure that the muddy ground driving performance being intended to reach in the case of obtaining the spoil disposal performance that improve
(particularly relating to earth-catching property (traction performance)).Specifically, according to the embodiment illustrated, transverse pattern groove
The cell wall of 3 is not to include the curved surface with constant curvature or have the plane at the constant angle of inclination relative to tread surface,
But include protruding and have the song being gradually reduced towards tyre surface end TE side towards the side contrary with side, transverse pattern groove 3 place
The curved face part 35 of rate.In the case of ensure that earth-catching property, raising is obtained along the curved face part 35 this change in curvature
Spoil disposal performance.More specifically, curved face part 35 is in tire equator line CL side, have bigger song in its cross section curve 35A
Rate (that is, has less radius of curvature), to make cell wall arrange with falling in tire equator line CL side.This shape is grabbed ensure that
In the case of ground performance, for travelling at muddy ground vehicle, also make the transverse pattern groove 3 can be easily by mud
Capture in the groove of tire equator line CL.On the other hand, curved face part 35 has in its cross section curve 35A in tyre surface end TE side
There is less curvature (that is, there is bigger radius of curvature), to make cell wall arrange with erecting near tyre surface end TE.This is shaped such that
Transverse pattern groove 3 can increase its sump volume and mud can easily be discharged from transverse pattern groove 3.Additionally, curved face part 35 court
There is to tyre surface side in its cross section curve 35A less curvature, and make the shape being formed with the cell wall of curved face part 35 three
Change in dimension size.This change in shape promotes the mud (mud post) being trapped in transverse pattern groove 3 along with tyre rotation
Discharged by tyre surface.
In the embodiment as shown, define the curved surface of reservation shape of curved face part 35 by by aforementioned condition (3) and
(4) distance limited is limited.Specifically, the cell wall of transverse pattern groove 3 is towards takeing on portion 10, pattern block land, side at transverse pattern groove 3
The direction at projecting inward place tilts.Therefore, according to exemplary pneumatic tire, it is by along tire circumference with transverse pattern groove 3
The situation making pattern block land, shoulder side portion 10 indent and formed is compared, and the curved surface of the reservation shape defining curved face part 35 can be made
Become the spoil disposal performance that smooth surface improves with acquisition.
Additionally, in the embodiment as shown, the cell wall of transverse pattern groove 3 includes that rake 37 and leap rake 37 prolong
The curved face part 35 stretched.This rake 37 formed by making the wall of transverse pattern groove 3 extend towards major trough 2 makes transverse pattern
Groove 3 can capture mud more energetically, hence improves the earth-catching property of tire.It addition, towards master in the way of width broadens
The curved surface of the reservation shape that groove 2 side extends obtains the spoil disposal performance substantially improved.
Furthermore, in the embodiment as shown, one in the wall of transverse pattern groove 3 is formed curved face part 35, and horizontal
Another in the wall of pattern groove 3 is formed tapered portion 36.The wall with such shape makes it possible to prevent transverse pattern
The sump volume of groove 3 significantly reduces, and thereby is achieved the spoil disposal performance substantially improved.Specifically, due to both in cell wall
The transverse pattern groove 3 with curved face part 35 will make part (this part curvature the is bigger) sump volume near tire equator line CL subtract
Little, the most only there is the transverse pattern groove 3 of curved face part 35 it can be avoided that such at transverse pattern groove 3 at the one in cell wall
Transverse pattern sump volume on reduction.It addition, compared with the transverse pattern groove not having tapered portion 36, be formed in cell wall is another
The tapered portion 36 with inclined plane of one contributes to being trapped in the discharge of the mud in transverse pattern groove 3.
Additionally, in the embodiment as shown, the central major trough 1 being formed at tread surface 100 obtains high drainage
Energy.
Center side pattern block land portion 20 includes the jut making the A/F towards central authorities' major trough 1 of transverse groove 4 narrow
21.For being suitable to travel at muddy ground vehicle, this opening narrowed prevents the mud from tyre surface end TE side from entering
In central authorities' major trough 1.This also prevents central authorities' major trough 1 from being blocked by mud and preventing from not being provided that required drainage performance.It addition, according to
Exemplary pneumatic tire, the cell wall with jut 21 of transverse groove 4 is formed curved surface 41.This makes including projection
Center side pattern block land portion 20 can be made in the case of portion 21 to maintain its rigidity.
Although illustrate the present invention with reference to the preferred implementation shown in figure, but pneumatic tires according to the present invention
It is not limited to such particular example.Much less, suitably pneumatic tires according to the present invention can be carried out various modification.
Industrial applicability
The invention provides the pneumatic tire of a kind of spoil disposal performance having and substantially improving, it is used for being suitable at slob
The upper vehicle travelled such as face.
Description of reference numerals
1 central authorities' major trough
2 major troughs (neighboring main grooves)
3 transverse pattern grooves
4 transverse grooves
10 shoulder pattern block land, side portions
20 center side pattern block lands portion
21 juts
31 opening edges
32 opening edges
33 tires interior ora terminalis radially
34 tires interior ora terminalis radially
35 curved face part
35A cross section curve
35B tire outer end radially
35C tire the inner radially
36 tapered portions
37 rakes
41 curved surfaces
100 tread surface
Claims (9)
1. a pneumatic tire, it is formed with transverse pattern groove on fetus face surface, and described transverse pattern groove is in tyre width side
Upwardly extend and one end open be in tyre surface end, it is characterised in that
At least one in the cell wall of the both sides laid respectively in tire circumference of described transverse pattern groove has curved face part, described
Curved face part is formed by the curved surface of reservation shape and the cell wall of both sides laid respectively in tire circumference at described transverse pattern groove
In at least one whole height described on extend；
The curved surface of described reservation shape is as follows: be perpendicular to described transverse pattern groove the opening edge towards described fetus face surface or
Cross section curve on the direction of the extended line being perpendicular to described opening edge is by towards contrary with side, described transverse pattern groove place
The curve that side is protruded is formed, and the curvature of described cross section curve goes to be gradually reduced towards tyre surface side from tire equator side.
Pneumatic tire the most according to claim 1, it is characterised in that
It is being perpendicular between tire RADIAL and the described cross section curve of the tire outer end radially of described cross section curve
Distance on the direction of described tire RADIAL goes to be gradually increased towards tire radial direction inner side,
In the plane graph on described fetus face surface, the described opening edge towards described fetus face surface of described transverse pattern groove
And the distance on the direction vertical with described opening edge or described opening edge between the tire radial inner end edge of described curved face part
Extended line and the tire radial inner end edge of described curved face part between on the direction vertical with the extended line of described opening edge
Distance goes to be gradually reduced towards described tyre surface side from described tire equator side.
Pneumatic tire the most according to claim 1, it is characterised in that described pneumatic tire has on described fetus face surface
Along the major trough that tire is circumferentially extending,
The other end of described transverse pattern groove is opened on described major trough；
The described cell wall with described curved face part has rake in the side being opened on described major trough, and described rake is from described
The height that the bottom of transverse pattern groove is measured goes to be gradually reduced towards described major trough side；
Described curved face part at least extends at whole rake.
Pneumatic tire the most according to claim 2, it is characterised in that described pneumatic tire has on described fetus face surface
Along the major trough that tire is circumferentially extending,
The other end of described transverse pattern groove is opened on described major trough；
The described cell wall with described curved face part has rake in the side being opened on described major trough, and described rake is from described
The height that the bottom of transverse pattern groove is measured goes to be gradually reduced towards described major trough side；
Described curved face part at least extends at whole rake.
5. according to the pneumatic tire described in any one in Claims 1-4, it is characterised in that
The cell wall of side in tire circumference that is positioned at of described transverse pattern groove has described curved face part,
The cell wall of opposite side in tire circumference that is positioned at of described transverse pattern groove includes tapered portion, described tapered portion from described laterally
The height that the bottom of pattern groove is measured goes to be gradually reduced towards described tyre surface side from described tire equator side, and, described
In the plane graph on fetus face surface, described tapered portion has following length: with described transverse pattern groove towards described fetus face
The length on direction that the opening edge on surface is vertical goes to be gradually increased towards described tyre surface side from described tire equator side.
6. according to the pneumatic tire described in any one in Claims 1-4, it is characterised in that described pneumatic tire is described
The central part on fetus face surface has central major trough, and described central authorities major trough upwardly extended in tire week.
Pneumatic tire the most according to claim 5, it is characterised in that described pneumatic tire is in described fetus face surface
Centre portion has central major trough, and described central authorities major trough upwardly extended in tire week.
Pneumatic tire the most according to claim 6, it is characterised in that described pneumatic tire includes on described fetus face surface
Center side pattern block land portion, described center side pattern block land portion is adjacent with described central major trough by described central authorities major trough and is taking turns
Tire week upwardly extending neighboring main grooves and described central authorities major trough and described neighboring main grooves between along tire width direction extend
Multiple transverse grooves limit,
Described center side pattern block land portion includes jut, and described jut is at least towards being positioned in tire circumference described in side
Transverse groove highlights.
Pneumatic tire the most according to claim 7, it is characterised in that described pneumatic tire includes on described fetus face surface
Center side pattern block land portion, described center side pattern block land portion is adjacent with described central major trough by described central authorities major trough and is taking turns
Tire week upwardly extending neighboring main grooves and described central authorities major trough and described neighboring main grooves between along tire width direction extend
Multiple transverse grooves limit,
Described center side pattern block land portion includes jut, and described jut is at least towards being positioned in tire circumference described in side
Transverse groove highlights.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011272631 | 2011-12-13 | ||
| JP2011-272631 | 2011-12-13 | ||
| PCT/JP2012/007979 WO2013088726A1 (en) | 2011-12-13 | 2012-12-13 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103998257A CN103998257A (en) | 2014-08-20 |
| CN103998257B true CN103998257B (en) | 2016-09-07 |
Family
ID=48612198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280061892.5A Expired - Fee Related CN103998257B (en) | 2011-12-13 | 2012-12-13 | Pneumatic tire |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6163106B2 (en) |
| CN (1) | CN103998257B (en) |
| AU (1) | AU2012353879B2 (en) |
| WO (1) | WO2013088726A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104029565B (en) * | 2014-06-11 | 2016-07-20 | 厦门正新橡胶工业有限公司 | Mud ground all-terrain vehicle air tread pattern structure |
| JP6154937B2 (en) * | 2016-05-27 | 2017-06-28 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP6311743B2 (en) * | 2016-05-30 | 2018-04-18 | 横浜ゴム株式会社 | Pneumatic tire |
| CN106183648A (en) * | 2016-09-27 | 2016-12-07 | 安徽和鼎轮胎科技股份有限公司 | All-terrain baby off-the-highway tire |
| JP7366715B2 (en) * | 2019-11-29 | 2023-10-23 | 株式会社ブリヂストン | tire |
| KR102445780B1 (en) * | 2021-01-06 | 2022-09-22 | 금호타이어 주식회사 | Pneumatic tire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002029222A (en) * | 2000-07-14 | 2002-01-29 | Bridgestone Corp | Pneumatic tire |
| JP2008012969A (en) * | 2006-07-03 | 2008-01-24 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3967820B2 (en) * | 1998-03-18 | 2007-08-29 | 株式会社ブリヂストン | Pneumatic tire |
| JP2004276861A (en) * | 2003-03-18 | 2004-10-07 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP4602782B2 (en) * | 2005-02-03 | 2010-12-22 | 株式会社ブリヂストン | Heavy duty pneumatic tire |
| JP5229446B2 (en) * | 2007-06-21 | 2013-07-03 | 横浜ゴム株式会社 | Pneumatic tire |
| US8156977B2 (en) * | 2008-12-16 | 2012-04-17 | The Goodyear Tire & Rubber Company | Tire |
| JP5491956B2 (en) * | 2010-05-13 | 2014-05-14 | 東洋ゴム工業株式会社 | Pneumatic tire |
| JP5506530B2 (en) * | 2010-05-13 | 2014-05-28 | 東洋ゴム工業株式会社 | Pneumatic tire |
-
2012
- 2012-12-13 WO PCT/JP2012/007979 patent/WO2013088726A1/en active Application Filing
- 2012-12-13 JP JP2013549124A patent/JP6163106B2/en not_active Expired - Fee Related
- 2012-12-13 CN CN201280061892.5A patent/CN103998257B/en not_active Expired - Fee Related
- 2012-12-13 AU AU2012353879A patent/AU2012353879B2/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002029222A (en) * | 2000-07-14 | 2002-01-29 | Bridgestone Corp | Pneumatic tire |
| JP2008012969A (en) * | 2006-07-03 | 2008-01-24 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103998257A (en) | 2014-08-20 |
| AU2012353879B2 (en) | 2016-03-10 |
| JP6163106B2 (en) | 2017-07-12 |
| WO2013088726A1 (en) | 2013-06-20 |
| JPWO2013088726A1 (en) | 2015-04-27 |
| AU2012353879A1 (en) | 2014-06-19 |
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