CN108790616A - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
- Publication number
- CN108790616A CN108790616A CN201810281238.4A CN201810281238A CN108790616A CN 108790616 A CN108790616 A CN 108790616A CN 201810281238 A CN201810281238 A CN 201810281238A CN 108790616 A CN108790616 A CN 108790616A
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- China
- Prior art keywords
- siping
- tire
- circumferential
- width direction
- circumferential direction
- 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.)
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Classifications
-
- 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
- B60C11/0304—Asymmetric patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/032—Patterns comprising isolated recesses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
Abstract
The present invention provides a kind of pneumatic tire, ground connection property of the land portion gone out by multiple tap drain zonings on tire width direction can be made to realize homogenization, and the uneven wear degree in tire circumferential direction can be inhibited to increase.Pneumatic tire has：Along the tap drain (11,12) of tire circumferentially extending；And central land portion (20) made of being divided by above-mentioned tap drain, central land portion has：The circumferential siping (23) extended along the direction relative to tire peripheral, oblique；The intersection siping (22) extended along the direction that siping (23) with respect to the circumferential direction intersects；Positioned at circumferential siping with intersect the partition wall portion (24) between siping and being separated from each other these siping, in ground connection shape (GS), by circumferential siping and intersect siping projected in tire circumferential direction and the siping drop shadow spread (R that is formed23、R22) be locally overlapped on tire width direction each other, and traverse entire scope of the central land portion on tire width direction.
Description
Technical field
The present invention relates to a kind of pneumatic tires.
Background technology
For with by the pneumatic tire along the land portion (such as rib) that a plurality of tap drain zoning that tire circumferentially extends goes out,
It is known：By forming the circumferential siping extended along the direction relative to tire peripheral, oblique in land portion, ditch appearance is increased
It accumulates and improves drainage.
However, in the case where making circumferential siping relative to tire peripheral, oblique, in the circumferential direction siping
The size in the land portion of tire width direction both sides disjunction is uneven, therefore, poor rigidity is generated between these land portions, from
And the ground connection property in land portion is easy to become uneven on tire width direction.In this regard, disclosed in such as patent document 1 as
Lower technology：It is formed and intersects siping with what the circumferential siping relative to tire peripheral, oblique extended across.
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2014-162295 bulletins
Invention content
In the pneumatic tire of patent document 1, although making the tire width direction in land portion because intersecting siping
On rigidity substantially realize homogenization, but increase positioned at the poor rigidity between the land portion of the tire circumferential direction both sides of cross part
Greatly, therefore, the uneven wear degree in tire circumferential direction will increase.In addition, when carrying out sulfidization molding to pneumatic tire, across
The rubber flowing of the tire circumferential direction both sides of cross part is interfered by siping is intersected, and therefore, is easy tod produce because rubber flows
The undesirable condition of starved caused by bad.
In contrast, it in the case where siping with respect to the circumferential direction has and alternately formed intersection siping, borrows
Helping will be located at the partition wall portion that intersection siping and circumferential siping separate across intersection on tire width direction
It is linked up between the land portion of the tire circumferential direction both sides in portion, therefore, reduces the poor rigidity between these land portions.
However, when looking up in tire week, formation on tire width direction with the presence of partition wall portion position not
The part of siping is formed, in this case, the rigidity of partition wall portion is higher than the rigidity of other parts, therefore, it is impossible to realize
The homogenization of ground connection property on tire width direction.
The issue of the present invention is to provide a kind of pneumatic tire, which can make the land gone out by multiple tap drain zonings
Ground connection property of the ground portion on tire width direction realizes homogenization, and can inhibit the uneven wear degree in tire circumferential direction
Increase.
The present invention provides a kind of pneumatic tire, which has：Multiple tap drains, they are circumferentially extended along tire；It is more
A land portion, they are divided by the multiple tap drain or these tap drains and the traverse furrow extended along tire width direction, institute
Stating land portion has：Circumferential siping extends along the direction relative to tire peripheral, oblique；Intersect siping, edge
The direction intersected relative to the circumferential siping extends；And partition wall portion, it is located at the circumferential siping and institute
It states between intersecting siping, and the circumferential siping and the intersection siping is separated from each other, in ground connection shape
In, the circumferential siping is projected in tire circumferential direction and the siping drop shadow spread that is formed and by the intersection knife
Slot decorative pattern is projected in tire circumferential direction and the siping drop shadow spread that is formed, is locally overlapped on tire width direction each other,
And traverse entire scope of the land portion on tire width direction.
According to the present invention, circumferential siping extends along the direction relative to tire peripheral, oblique, therefore, and relative to wheel
The case where tire circumferentially extends parallel to is compared, and ditch volume increases, and which thereby enhances drainage.If here, being formed with relative to wheel
The circumferential siping of tire peripheral, oblique, then land portion disjunction and made big on tire width direction by the circumferential direction siping
It is small to become uneven, therefore, it is easy to generate poor rigidity on tire width direction.
However, according to the present invention, circumferential siping and/or the siping drop shadow spread for intersecting siping are horizontal
It is located at the land portion of ground connection shape with passing through the entire scope on tire width direction, therefore, it is possible in entire tire width direction
On equably reduce the rigidity in land portion.That is, can be carried relative to the circumferential siping of tire peripheral, oblique by being formed
High drainage, and ground connection property of the land portion on tire width direction can be made to realize homogenization.
Also, interval is provided between siping with intersecting in circumferential siping, therefore, in sulfidization molding, energy
Between enough making rubber flowing is supreme to state siping, so as to inhibit the bad shape of the starved because caused by rubber flow is bad
Condition.
Preferably, the circumferential siping with it is described intersects be divided into the circumferential direction cutter groove between described between siping
1/2 or more of the furrow width of decorative pattern.
According to this structure, by that can make with the by of forming interval appropriate between siping is intersected in circumferential siping
The flowing of rubber when sulfidization molding becomes to be more prone to, so as to inhibit rubber flowing bad.In addition, it can be ensured that at this
The thickness of the rubber of sulfidization molding, rubber when therefore, it is possible to inhibit sulfidization molding rear tyre sulfurizing mould to demould are carried out in interval
Damage is collapsed in glue generation.
Furthermore it is preferred that the circumferential direction siping is 10 ° or less relative to the angle of inclination of tire circumferential direction.
According to this structure, circumferential siping is configured to longer, therefore, it is possible to effectively increase ditch volume, thus, it is possible to
Effectively play drainage effect caused by circumferential siping.
Furthermore it is preferred that the circumferential direction siping is 3 ° or more 5 ° or less relative to the angle of inclination of tire circumferential direction.
According to this structure, the widthwise edges component formed by circumferential siping can be effectively inhibited and increased.
That is, being easy water into circumferential siping by the widthwise edges ingredient for effectively inhibiting circumferential siping increases
It imports, to easily and efficiently play drainage effect caused by circumferential siping.
Furthermore it is preferred that it is described intersect siping along the extending direction relative to the circumferential siping with 25 ° with
On angle tilt direction extend.
According to this structure, in tyre vulcanized mould, can prevent from being formed the siping blade of circumferential siping with
The angle formed between the siping blade for intersecting siping becomes too small.Thereby, it is possible to inhibit sulfureted rubber
It is sandwiched between two siping blades of tyre vulcanized mould, thus, it is possible to more effective when tyre vulcanized mould demoulds
Ground inhibits the rubber to collapse damage.
Furthermore it is preferred that when looking up in tire week, the partition wall portion is positioned at the width direction siping
The side of side has：Face vertical component, the surface from the land portion are inside towards tire diameter along the direction vertical with the surface
Side extends；And sloping portion, it is rolled towards tire radial direction inner side and towards the width direction siping in ditch bottom side oblique.
It is highly preferred that vertically prolonging by and with the surface relative to the intersection point from the side of the partition wall portion and the surface
The straight line stretched, the sloping portion are tilted with 5 ° or more 45 ° gradients below.
According to this structure, it is easy suitably to reduce the rigidity of the surface side of partition wall portion.Also, even if developing in abrasion
When, it is also easy to maintain the sipe length of width direction siping, to be easy to maintain the homogenization of ground connection property.In addition,
Partition wall portion is configured to larger width because of sloping portion in ditch bottom side on tire width direction, therefore, it is possible to improve base
The rigidity of end side, so as to suitably improve the rigidity of partition wall portion.
Furthermore it is preferred that the siping that intersects is made of the multiple local siping being intermittently formed.The friendship
Fork siping can be configured to by a plurality of local siping for being formed in different location on tire width direction, Huo Zheke
To be made of a plurality of local siping for being formed in different location in tire circumferential direction.
Invention effect
In accordance with the invention it is possible to which ground connection property of the land portion gone out by multiple tap drain zonings on tire width direction is made to realize
Homogenization, and the uneven wear degree in tire circumferential direction can be inhibited to increase.
Description of the drawings
Fig. 1 is the plan view for being unfolded to show the tread contour of the pneumatic tire involved by an embodiment of the invention.
Fig. 2 is the figure in the portions A that amplification is shown in Fig. 1.
Fig. 3 is the sectional view at the III-III lines in Fig. 2.
Fig. 4 A are to show width direction siping involved by variation, identical with Fig. 2 enlarged drawing.
Fig. 4 B are to show width direction siping involved by other variations, identical with Fig. 2 enlarged drawing.
Fig. 4 C are to show width direction siping involved by other another variations, identical with Fig. 2 enlarged drawing.
Reference sign
11,12 central main groove
13,14 outside tap drain
20 central land portions
22 width direction siping
23 circumferential siping
24 partition wall portions
30,40 intermediate land portion
50,60 tire-shoulder land portion
The width of the surface side of W partition wall portions
CL tire equator lines
GS is grounded shape
GL ground terminals
The angle of inclination of the circumferential siping of θ 1
The intersecting angle of 2 width direction siping of the θ extending direction of siping with respect to the circumferential direction
Specific implementation mode
Hereinafter, being illustrated with reference to the accompanying drawings to embodiment according to the present invention.Wherein, illustrate below in itself not
It is example to cross, do not seek thus to the present invention, it limits using object or its purposes.In addition, attached drawing is signal
The attached drawing of property, ratio of each size etc. and reality are different.
Fig. 1 is the tread contour for being unfolded to show the fetus face 2 of the pneumatic tire 1 involved by an embodiment of the invention
Plan view.In addition, for convenience of description, in tire circumferential direction, the sides F will be known as towards the direction on right side in figure, and by direction
The direction in left side is known as the sides R in figure.
As shown in Figure 1, being formed with 4 tap drains 11~14 circumferentially extended along tire in fetus face 2.Specifically, taking turns
Substantially central portion in tire width direction is formed with 2 central main grooves 11,12, outside the tire width direction of above-mentioned central main groove
Side is respectively formed with 2 outside tap drains 13,14.Central main groove 11,12 is located at across the both sides of tire equator line CL.
Zoning goes out central land portion 20 between central main groove 11,12.The area between central main groove 11 and outside tap drain 13
Intermediate land portion 30 is marked, zoning goes out intermediate land portion 40 between central main groove 12 and outside tap drain 14.Also, it leads on the outside
Zoning goes out tire-shoulder land portion 50,60 respectively on the outside of the tire width direction of ditch 13,14.
That is, fetus face 2 is made to be configured to have along tire circumferential direction using 4 tap drains 11~14 circumferentially extended along tire
The rib decorative pattern in the 5 land portion 20,30,40,50,60 extended.
It is formed in central land portion 20：The band ditch 21 and width direction siping 22 extended along tire width direction
(intersecting siping)；And the circumferential siping 23 along tire circumferentially extending.
Here, in the present specification, using the wording such as circumferential siping, width direction siping, these knives sometimes
Slot decorative pattern means the decorative pattern formed using the siping blade of plate in tyre vulcanized mould.In other words, cutter groove is spent
Line means the ditch that furrow width is about 1.5mm or less and mutually opposed ditch wall surface contacts in a grounded state each other.
In Fig. 1, the part abutted with road surface under ground state shown by dashed lines as ground connection shape GS.At this
In pneumatic tire 1 involved by embodiment, the ground terminal GL on tire width direction is located at the roller in tire-shoulder land portion 50,60
Position on the outside of tire width direction, the part between above-mentioned ground terminal GL contact under ground state with road surface.That is, central
Entire scope ground connection on the tire width direction in land portion 20 and intermediate land portion 30,40, the position in tire-shoulder land portion 50,60
Partial earthing on the inside of the tire width direction of ground terminal GL.
Hereinafter, being illustrated to central land portion 20 with reference to Fig. 2.
Fig. 2 is the figure in the portions A that amplification is shown in Fig. 1.As shown in Fig. 2, band ditch 21 is in the circumferentially spaced compartment of terrain of tire
Be formed with it is multiple, from the one end being connected to central main groove 11 towards 12 side of central main groove and towards the F of tire circumferential direction roll tiltedly
Extend, the other end forms terminal in the position more than the tire equator line CL in central land portion 20.
Circumferential siping 23 is between a pair of of band ditch 21,21 positioned at the circumferentially upper adjacent position of tire along tire week
To extension, from the other end of the band ditch 21 positioned at the sides F of tire circumferential direction along towards the sides R of tire circumferential direction and towards central main groove
The inclined direction in 11 sides extends, and reaches the band ditch 21 positioned at the sides R of tire circumferential direction.Circumferential siping 23 is relative to tire
Circumferential tilt angle theta 1 is set as 10 ° or less.
Width direction siping 22 is located in the tire circumferential direction between the circumferential above adjacent pair band ditch 21,21 of tire
Substantial middle, from 11 side of central main groove towards 12 side of central main groove and towards the F of tire circumferential direction inclination tiltedly extend.Width direction
Siping 22 is extended along siping 23 with respect to the circumferential direction with the direction that tilt angle theta 2 is intersected.Tilt angle theta 2 is set as
25 ° or more.
Width direction siping 22 is formed with a pair in the tire width direction both sides of circumferential siping 23, has：
First width direction siping 22A of 11 side of centrally located tap drain；And the second width direction of centrally located 12 side of tap drain
Siping 22B.
First width direction siping 22A extends from the one end being connected to central main groove 11 to 12 side of central main groove,
There is siping 23 compartment of terrain terminal is formed in central land portion 20 with respect to the circumferential direction for the other end.Similarly, second is wide
Spend direction siping 22B from one end be connected to central main groove 12 to 11 side of central main groove extension, the other end relative to
There is circumferential siping 23 compartment of terrain terminal is formed in central land portion 20.
In other words, in the first width direction siping 22A and the second width direction siping 22B and circumferential cutter groove
The partition wall portion 24 as the solid section for not forming siping is respectively formed between decorative pattern 23.
Here, on tire width direction, the first width direction siping 22A's is located at circumferential siping 23 side
One end part is in the siping drop shadow spread R for projecting circumferential siping 23 in tire circumferential direction and being formed23, it is located at circumferential
The other end of the opposite side of siping 23 is connected to central main groove 11.In addition, on tire width direction, the second width side
To siping 22B the one end part for being located at circumferential 23 side of siping in siping drop shadow spread R23, it is located at circumferential knife
The other end of the opposite side of slot decorative pattern 23 is connected to central main groove 12.
That is, the first width direction siping 22A is projected in tire circumferential direction and the siping drop shadow spread that is formed
R22AWith the siping drop shadow spread R of circumferential siping 2323It is overlapped in the range of on tire width direction in X1.Equally
Ground, the second width direction siping 22B is projected in tire circumferential direction and the siping drop shadow spread R that is formed22BWith circumferential knife
The siping drop shadow spread R of slot decorative pattern 2323It is overlapped in the range of on tire width direction in X2.
In other words, for ground connection shape GS (referring to Fig.1), by circumferential siping 23 and in the circumferential direction siping
The the first width direction siping 22A and the second width direction siping 22B that 23 tire width direction both sides are formed
The siping drop shadow spread R for projecting and being formed in tire circumferential direction23、R22AAnd R22B, the office on tire width direction each other
Portion is overlapped, and traverses the entire scope on the tire width direction in central land portion 20.
Fig. 3 is along the sectional view of the III-III lines in Fig. 2, and is to look up central land portion 20 in tire week
Along the figure in the section of width direction siping 22.As shown in figure 3, for partition wall portion 24, compared with surface side, wheel
The inboard portion of tire radially is formed as the width of bigger.Width W of the surface of partition wall portion 24 on tire width direction is set
It is set to 1/2 or more of the furrow width W0 of circumferential siping 23.In addition, the width W of partition wall portion 24 can be set in so that width
The other end (being located at 23 side of circumferential siping on tire width direction) of direction siping 22 is located at circumferential cutter groove and spends
The siping drop shadow spread R of line 2323In the range of.
Partition wall portion 24 has in the side positioned at 22 side of width direction siping from the surface edge in central land portion 20
The face vertical component 25 that the direction vertical with the face extends towards tire radial direction inner side.The surface in central land portion 20 is relative to tire
Radial orthogonal, therefore, face vertical component 25 and tire extend radial parallelly.The length of the tire of face vertical component 25 radially
H is set as 1/2 or less the ditch depth H0 of width direction siping 22.
In addition, partition wall portion 24 have towards tire radial direction inner side in the side positioned at 22 side of width direction siping and
Towards the inclined sloping portion in width direction siping side 26.Sloping portion 26 is formed as the more roller of specific surface vertical component 25
Tire radial direction internal side diameter.Preferably, sloping portion 26 be formed in tire radial direction internal side diameter end (width direction siping 22
Ditch bottom side), as a result, when wearing, it is suppressed that width direction siping 22 reduces on tire width direction.
The tilt angle theta 3 of sloping portion 26 is relative to the friendship from the side of partition wall portion 24 and the surface of fetus face 2
Point by and with the surface extend vertically straight line L by be set as 45 ° or less.As a result, when wearing, it is suppressed that width
Direction siping 22 reduces on tire width direction.Furthermore it is preferred that tilt angle theta 3 is set as 5 ° or more, as a result, can
It is enough that partition wall portion 24 is effectively made to be formed as larger width in the base end part of tire radial direction internal side diameter.
In addition, as shown in double dot dash line in Fig. 3, partition wall portion 24 can be made to be configured to：It radially extends and is taking turns along tire
There is constant width in tire width direction.
Pneumatic tire 1 from the description above can realize following effect.
(1) circumferential siping 23 is along the direction extension relative to tire peripheral, oblique, therefore, and relative to tire circumferential direction
The case where extending parallel to is compared, and ditch volume increases, and which thereby enhances drainage.Herein, if being formed with relative to tire circumferential direction
It is inclined circumferential direction siping 23, then central land portion 20 by circumferential siping 23 on tire width direction disjunction and make
Size is uneven, therefore, is easy to generate poor rigidity on tire width direction.
However, the siping drop shadow spread R of circumferential siping 23 and/or width direction siping 2223、
R22It is located at the central land portion 20 of ground connection shape GS with traversing the entire scope on tire width direction, therefore, it is possible to entire
The rigidity in central land portion 20 is equably reduced on tire width direction.That is, by forming the week relative to tire peripheral, oblique
Drainage can be improved to siping 23, and the ground connection property on the tire width direction in central land portion 20 can be made real
Now homogenize.
(2) partition wall portion 24 is provided between circumferential siping 23 and width direction siping 22, therefore, in sulphur
When chemical conversion type, rubber can flow between these siping, so as to inhibit the starved because caused by rubber flow is bad
Undesirable condition.
(3) the width W of partition wall portion 24 is set as 1/2 or more of the furrow width W0 of circumferential siping 23, therefore, it is possible to make
The flowing of rubber when sulfidization molding becomes to be more prone to, so as to inhibit rubber flowing bad.In addition, it can be ensured that vulcanization
It is shaped to the thickness of the rubber of partition wall portion 24, rubber when therefore, it is possible to inhibit the tyre vulcanized mould after sulfidization molding to demould
Glue collapses damage (chipping).
(4) circumferential siping 23 is set as 10 ° hereinafter, therefore relative to the tilt angle theta 1 of tire circumferential direction, circumferential knife
Slot decorative pattern 23 is configured to longer, as a result, it is possible to make ditch volume effectively increase, so as to effectively play circumferential cutter groove flower
Drainage effect caused by line 23.
(5) width direction siping 22 along the extending direction of siping 23 with respect to the circumferential direction with 25 ° or more of inclination
2 inclined direction of angle, θ extends, and therefore, in tyre vulcanized mould, can prevent the cutter groove for being used to form circumferential siping 23
Angle between decorative pattern blade and the siping blade for being used to form width direction siping 22 becomes too small.As a result, can
Sulfureted rubber is enough inhibited to be sandwiched between two siping blades of tyre vulcanized mould, therefore, in vulcanized model for tyre
The rubber can more efficiently be inhibited when tool demoulding collapses damage.
(6) partition wall portion 24 is formed with face vertical component 25 in surface side, and sloping portion 26 is formed in ditch bottom side, that is,
It is configured to the width of bigger in ditch bottom side.It is easy to make the rigidity of the surface side of partition wall portion 24 suitably to reduce as a result,.Also,
Even if being easy to maintain the sipe length of width direction siping 22 if when wearing development, it is grounded to be easy maintenance
The homogenization of property.In addition, partition wall portion 24 on tire width direction is configured to larger in ditch bottom side due to sloping portion 26
Width, therefore, the rigidity of base end part side are higher, so as to suitably improve the rigidity of partition wall portion 24.
In the above-described embodiment, width direction siping 22 is configured to continuously extend as follows：One end
Portion is located at the siping drop shadow spread R of circumferential siping 2323It is interior, also, the end of the other end and central land portion 20
(central main groove 11,12) is connected to, and however, it is not limited to this.That is, width direction siping 22 can be by multiple part width sides
It is constituted to siping 220.
For example, as shown in Figure 4 A, the first width direction siping 22A can be by being formed in not on tire width direction
With position 3 part width direction siping 221A~223A constitute, the second width direction siping 22B can by
2 part width directions siping 221B, 222B that different location is formed on tire width direction are constituted.
In this case, the siping for part width direction siping 221A being projected in tire circumferential direction and being formed
Drop shadow spread R221A, the siping drop shadow spread R of siping 23 with respect to the circumferential direction in 23 side of circumferential siping23With Z1's
Range is locally overlapped on tire width direction.In addition, siping drop shadow spread R221AIn the opposite of circumferential siping 23
Siping drop shadow spread R of the side relative to part width direction siping 222A222AWith the range of Z2 in tyre width side
Part overlapping upwards.Similarly, the knife of part width direction siping 222A and part width direction siping 223A
Slot decorative pattern drop shadow spread R222AAnd R223A, locally it is overlapped on tire width direction with the range of Z3 respectively.In addition, part is wide
Degree direction siping 223A is connected to central main groove 11.
The other side about circumferential siping 23 is same, and the siping of part width direction siping 221B is thrown
Shadow range R221B, in siping drop shadow spread R of 23 side of circumferential siping relative to tire circumferential direction siping 2323With Z4
Range be locally overlapped on tire width direction.In addition, siping drop shadow spread R221BIn the phase of circumferential siping 23
The siping drop shadow spread R to toss about relative to part width direction siping 222B222BWith the range of Z5 in tyre width
It is locally overlapped on direction.In addition, part width direction siping 222B is connected to central main groove 12.
That is, even if make width direction siping 22 by being formed in multiple offices of different location on tire width direction
In the case that portion's width direction siping 220 is formed, as long as also constituting as follows：Multiple width direction parts knife
220 respective siping drop shadow spread R of slot decorative pattern220With the siping drop shadow spread R of circumferential siping 2323Exist each other
It is locally overlapped on tire width direction, and traverses the entire scope on the tire width direction in central land portion 20.
Similarly, as shown in Figure 4 B, the first width direction siping 22A can also be by being formed in not in tire circumferential direction
A plurality of part width direction siping 321A and 322A with position are constituted, also, the second width direction siping 22B
It can also be made of a plurality of part width direction siping 321B and 322B.Specifically, the first width direction cutter groove is spent
The part width direction siping 321A positioned at the sides R of tire circumferential direction in line 22A is configurable to：With circumferential siping
The siping drop shadow spread R of R2323Part overlapping, in the second width direction siping 22B positioned at the sides F of tire circumferential direction
Part width direction siping 322B be configurable to：With the siping drop shadow spread R of circumferential siping R2323Office
Portion is overlapped.
As long as even if in this case if as follows constitute：Each siping drop shadow spread R321A、R321B、
R322AAnd R322BTogether with the siping drop shadow spread R of circumferential siping 2323With range V1~V4 in tire width direction
Upper part overlapping, and traverse the entire scope on the tire width direction in central land portion 20.
Also, as shown in Figure 4 C, the first width direction siping 22A can also be by being formed in difference in tire circumferential direction
A plurality of part width direction the siping 421A and 422A of position are constituted, also, the second width direction siping 22B
It can be made of a plurality of part width direction siping 421B and 422B.Specifically, the first width direction siping
The part width direction siping R422A positioned at the sides F of tire circumferential direction in 22A is configurable to:With circumferential siping
The siping drop shadow spread R of R2323Part overlapping, in the second width direction siping 22B positioned at the sides R of tire circumferential direction
Part width direction siping 421B be configurable to:With the siping projection section R of circumferential siping R2323Office
Portion is overlapped.
As long as even if in this case if as follows constitute：Each siping drop shadow spread R421A、R421B、
R422AAnd R422BTogether with the siping drop shadow spread R of circumferential siping 2323With range W1~W4 in tire width direction
Upper part overlapping, and traverse the entire scope on the tire width direction in central land portion 20.
In the above-described embodiment, the tilt angle theta 1 by circumferential siping 23 relative to tire circumferential direction is set as 10 °
Hereinafter, but it is highly preferred that tilt angle theta 1 is set as 3 ° or more 5 ° or less.Thereby, it is possible to effectively inhibit because circumferential cutter groove is spent
The increase of widthwise edges component caused by line 23.That is, the width direction by effectively inhibiting circumferential siping 23
The increase of edge component and be easier to import water into circumferential siping 23, to be easy to play circumferential 23 institute of siping
The drainage effect brought.
In the above-described embodiment, as the siping intersected with circumferential siping 23, with along tire width direction
It is illustrated for the width direction siping 22 of extension, however, it is not limited to this.As long as that is, along cutter groove with respect to the circumferential direction
Decorative pattern 23 is extended with the direction that 25 ° or more of intersecting angle θ 2 intersects, but is not limited to substantially along tire width direction
Extend, can also substantially be circumferentially extended along tire.
Claims (10)
1. a kind of pneumatic tire, which has：Multiple tap drains, they are circumferentially extended along tire；Multiple land portions, they
It is divided by the multiple tap drain or by these tap drains and the traverse furrow extended along tire width direction, wherein
The land portion has：
Circumferential siping extends along the direction relative to tire peripheral, oblique；
Intersect siping, extends along the direction intersected relative to the circumferential siping；And
Partition wall portion, be located at the circumferential siping with it is described intersects siping between, and by the circumferential cutter groove flower
Line and the intersection siping are separated from each other,
In being grounded shape, the circumferential siping is projected in tire circumferential direction and formed siping drop shadow spread,
With by the intersection siping projected in tire circumferential direction and the siping drop shadow spread that is formed, each other in tyre width side
Part overlapping upwards, and traverse entire scope of the land portion on tire width direction.
2. pneumatic tire according to claim 1, wherein
The circumferential direction siping with it is described intersects the furrow width of the circumferential direction siping is divided between described between siping
1/2 or more.
3. pneumatic tire according to claim 1 or 2, wherein
The circumferential direction siping is 10 ° or less relative to the angle of inclination of tire circumferential direction.
4. pneumatic tire according to claim 1 or 2, wherein
The circumferential direction siping is 3 ° or more 5 ° or less relative to the angle of inclination of tire circumferential direction.
5. pneumatic tire according to claim 1 or 2, wherein
It is described to intersect siping along the extending direction relative to the circumferential siping with the side of 25 ° or more of angle tilt
To extension.
6. pneumatic tire according to claim 1 or 2, wherein
When looking up in tire week, the side positioned at width direction siping side of the partition wall portion has：
Face vertical component extends along the direction vertical with the surface towards tire radial direction inner side from the surface in the land portion；With
And
Sloping portion is rolled in ditch bottom side towards tire radial direction inner side and towards the width direction siping oblique.
7. pneumatic tire according to claim 6, wherein
It is extended vertically by and with the surface relative to the intersection point from the side of the partition wall portion and the surface
Straight line, the sloping portion are tilted with 5 ° or more 45 ° gradients below.
8. pneumatic tire according to claim 1 or 2, wherein
The siping that intersects is made of the multiple local siping being intermittently formed.
9. pneumatic tire according to claim 8, wherein
The siping that intersects is made of a plurality of local siping for being formed in different location on tire width direction.
10. pneumatic tire according to claim 8, wherein
The siping that intersects is made of a plurality of local siping for being formed in different location in tire circumferential direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-088810 | 2017-04-27 | ||
| JP2017088810A JP6861085B2 (en) | 2017-04-27 | 2017-04-27 | Pneumatic tires |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108790616A true CN108790616A (en) | 2018-11-13 |
| CN108790616B CN108790616B (en) | 2020-07-10 |
Family
ID=64095441
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810281238.4A Active CN108790616B (en) | 2017-04-27 | 2018-04-02 | Pneumatic tire |
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| Country | Link |
|---|---|
| JP (1) | JP6861085B2 (en) |
| CN (1) | CN108790616B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111791649B (en) * | 2019-04-03 | 2024-02-13 | 住友橡胶工业株式会社 | Tire with a tire body |
| CN114746292B (en) * | 2019-12-13 | 2023-11-14 | 横滨橡胶株式会社 | Tire with a tire body |
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| JPH06247110A (en) * | 1993-02-23 | 1994-09-06 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| CN101068690A (en) * | 2004-11-30 | 2007-11-07 | 横滨橡胶株式会社 | Pneumatic tire |
| CN101992658A (en) * | 2009-08-24 | 2011-03-30 | 住友橡胶工业株式会社 | Pneumatic tire |
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| JP2013116708A (en) * | 2011-12-05 | 2013-06-13 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
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| JP2016222208A (en) * | 2015-06-03 | 2016-12-28 | 株式会社ブリヂストン | Pneumatic tire |
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| JP3378789B2 (en) * | 1998-02-27 | 2003-02-17 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP4086176B2 (en) * | 2001-03-01 | 2008-05-14 | 東洋ゴム工業株式会社 | Pneumatic radial tire |
| JP4726106B2 (en) * | 2001-09-20 | 2011-07-20 | 東洋ゴム工業株式会社 | Pneumatic tire |
| JP3686041B2 (en) * | 2002-02-04 | 2005-08-24 | 東洋ゴム工業株式会社 | Pneumatic tire |
| CN203418936U (en) * | 2013-06-28 | 2014-02-05 | 建大橡胶（中国）有限公司 | SUV (sport utility vehicle) snow tire |
| JP6092059B2 (en) * | 2013-09-13 | 2017-03-08 | 東洋ゴム工業株式会社 | Pneumatic tire |
| CN107206847B (en) * | 2015-01-30 | 2019-08-27 | 株式会社普利司通 | Pneumatic tire |
| JP6657587B2 (en) * | 2015-04-10 | 2020-03-04 | 横浜ゴム株式会社 | Pneumatic tire |
| JP2018043553A (en) * | 2016-09-12 | 2018-03-22 | 横浜ゴム株式会社 | Pneumatic tire |
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| JPH06247110A (en) * | 1993-02-23 | 1994-09-06 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| CN101068690A (en) * | 2004-11-30 | 2007-11-07 | 横滨橡胶株式会社 | Pneumatic tire |
| CN101992658A (en) * | 2009-08-24 | 2011-03-30 | 住友橡胶工业株式会社 | Pneumatic tire |
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| JP2013116708A (en) * | 2011-12-05 | 2013-06-13 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6861085B2 (en) | 2021-04-21 |
| JP2018184145A (en) | 2018-11-22 |
| CN108790616B (en) | 2020-07-10 |
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