CN109664685A - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
- Publication number
- CN109664685A CN109664685A CN201811105477.0A CN201811105477A CN109664685A CN 109664685 A CN109664685 A CN 109664685A CN 201811105477 A CN201811105477 A CN 201811105477A CN 109664685 A CN109664685 A CN 109664685A
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- China
- Prior art keywords
- rill
- tire
- bending section
- closer
- conical surface
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
- B60C11/042—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section
- B60C11/045—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section the groove walls having a three-dimensional shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/032—Patterns comprising isolated recesses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
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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
-
- 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
- B60C11/1323—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls asymmetric
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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
- B60C11/1376—Three dimensional block surfaces departing from the enveloping tread contour
- B60C11/1392—Three dimensional block surfaces departing from the enveloping tread contour with chamfered block edges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0341—Circumferential grooves
- B60C2011/0346—Circumferential grooves with zigzag shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
- B60C2011/0365—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane characterised by width
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0381—Blind or isolated grooves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0381—Blind or isolated grooves
- B60C2011/0383—Blind or isolated grooves at the centre of the tread
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0386—Continuous ribs
- B60C2011/039—Continuous ribs provided at the shoulder portion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The present invention provides a kind of pneumatic tire for ensuring ground connection property, the rigid balancing in tire circumferential direction and drainage.Circumferentially having the first rill (30) along tire with the width direction side of the tap drain (20) of straight extension, and have the second rill (40) in the other side, one end of first rill and the second rill (40) is at the tap drain (20) extended with straight in opening, the other end is in land portion (24, 26) inner sealing, first rill and the same direction of the second rill (40) towards tire circumferential direction are bent, the ratio bending section (31) of first rill extends closer to the part (32) of the one end and the ratio bending section (41) of the second rill (40) closer to the part (42) of the one end towards same direction, the ratio bending section (41) of second rill (40) closer to the another side part (43) and the first rill ratio bending section (31) closer to The part (33) of the another side is compared, more towards tire circumferential direction.
Description
The application is gone out by Japanese Patent to be willing to advocate day based on 2017-199828 (applying date: on October 13rd, 2017)
This speciallys permit out the priority for being willing to 2017-199828.The application includes that Japanese Patent goes out to be willing to the full content of 2017-199828.
Technical field
The present invention relates to a kind of pneumatic tires.
Background technique
Previous known following pneumatic tire: in width direction two circumferential along tire and with the tap drain of straight extension
Side is provided with the rill extended along tire width direction, and in opening at the tap drain, the other end exists for one end of above-mentioned rill
Land portion inner sealing (for example, referring to patent document 1).This rill is on tire is circumferential by the portion of the tap drain side in land portion
Separation is left, and therefore, the ground connection property in land portion is good.
Patent document 1: No. 5781566 bulletins of Japanese Patent Publication No.
Summary of the invention
However, in above-mentioned pneumatic tire, since rigidity is at the position for being provided with rill and the position for being not provided with rill
Be it is different, therefore, land portion rigidity in tire circumferential direction not realize homogenization.In addition, along tire width direction
Effect of the rill of extension in terms of drainage is smaller.
Therefore, the issue of the present invention is to provide one kind can ensure ground connection property, the rigid balancing in tire circumferential direction and
The pneumatic tire of drainage.
The pneumatic tire of embodiment is in width direction side tool circumferential along tire and with the tap drain of straight extension
Standby first rill, and have the second rill in the other side, first rill and second rill are formed are as follows: one end with
In opening at the tap drain that straight extends, in land portion inner sealing, the pneumatic tire is characterized in that the other end, described
First rill and the same direction of second rill towards tire circumferential direction are bent, and the ratio bending section of first rill is more leaned on
The part of the nearly one end and the ratio bending section of second rill are all relative to tire closer to the part of the one end
Obliquely extend to and towards same direction, bending section described in the ratio of second rill is closer to the part of the another side
And the part of bending section closer to the another side described in the ratio of first rill is compared, more towards tire circumferential direction.
The pneumatic tire of embodiment is as characterized above, so as to ensure that ground connection property, the rigidity in tire circumferential direction are flat
Weighing apparatus and drainage.
Detailed description of the invention
Fig. 1 is the width direction cross-sectional view of the pneumatic tire 1 of embodiment.
Fig. 2 is the tread contour of embodiment.
Fig. 3 be the center tap drain 10 observed from tire radial outside figure (wherein, in order to simplify and by third rill 28
It omits).
Fig. 4 be the center tap drain 10 observed from the tangential direction of tire equator E figure (wherein, in order to simplify and by the
Three rills 28 omit).
Fig. 5 is the cross-sectional view of the center tap drain 10 at the line A-A in Fig. 3.
Fig. 6 is the first rill 30 observed from tire radial outside and the figure of the second rill 40.
Fig. 7 (a) is the cross-sectional view of the slit portion 32 of the first rill 30 at the line B-B in Fig. 6.Fig. 7 (b) is in Fig. 6
The cross-sectional view of the sipe portion 33 of the first rill 30 at line C-C.
Fig. 8 (a) is the cross-sectional view of the slit portion 42 of the second rill 40 at the line D-D in Fig. 6.Fig. 8 (b) is in Fig. 6
The cross-sectional view of the sipe portion 43 of the second rill 40 at E-E line.
Fig. 9 is the figure for the tire shoulder flank 26 observed from tire radial outside.
Figure 10 is the cross-sectional view of the 4th rill 50 at the F-F line in Fig. 9.
Figure 11 is to show the figure of 3 dimension siping 55.Figure 11 (a) is the 4th rill 50 observed from surface of tyre
Figure.Figure 11 (b) is to show the figure of a wall surface of the 4th rill 50.Figure 11 (c) is at the position of the G-G line in Figure 11 (b)
The face parallel with ground plane on the 4th rill 50 cross-sectional view.
Description of symbols
E ... tire equator, 1 ... pneumatic tire, 2 ... bead parts, 2a ... bead core, 2b ... bead filler rubber, 3 ... tyre surfaces
Glue, 4 ... sidewall rubbers, 5 ... carcass plies, 6 ... liners, 7 ... bandings, 10 ... center tap drains, 11 ... long ditch portions, 12 ... short ditch portions,
13 ... bottoms of trench, 14 ... protrusions, the protrusion on the right side 14a ..., the protrusion in the left side 14b ..., 15 ... recess portions, 16 ... the conical surfaces, 17 ... wall portions,
20 ... shoulder main grooves, 22 ... ground terminals, 24 ... central ribs, 26 ... tire shoulder flanks, 28 ... third rills, 29 ... the conical surfaces, 30 ...
First rill, 31 ... bending sections, 32 ... slit portions, 33 ... sipe portions, 34 ... the conical surfaces, 35 ... wall portions, 40 ... second rills,
41 ... bending sections, 42 ... slit portions, 43 ... sipe portions, 44 ... the conical surfaces, 45 ... wall portions, 50 ... the 4th rills, 51 ... bendings
Portion, 54 ... the conical surfaces, 55 ... 3 dimension siping, 56 ... wall portions, 57 ... crest portions, 58 ... trough portions.
Specific embodiment
Based on attached drawing, embodiment is illustrated.In addition, following implementation is merely illustrative, invention scope is simultaneously unlimited
Due to this.
In the following description, it ditch and is set to the width of the conical surface of the ditch and refers to: in the face parallel with tyre contact patch
Interior, on the direction orthogonal with the extending direction of the center line of the bottom of trench of the ditch length.In addition, load condition refers to: inflated wheel
Tire is assembled in regular wheel rim in such a way that wheel rim assembles and is filled regular internal pressure and load has the state of regular load.This
Place, regular wheel rim refer to: the standard rim of defined in JATMA, TRA, ETRTO equal-specification.In addition, regular load refers to: institute
State the maximum load of defined in specification.In addition, regular internal pressure refers to: internal pressure corresponding with the maximum load.
1. the cross-sectional configuration of pneumatic tire 1
As shown by way of example in fig. 1, in the tire width direction two sides of pneumatic tire 1, it is provided with bead part 2.Bead part 2 is wrapped
Include: the bead core 2a being made of steel wire is wound into circle；And the bead filler rubber 2b of rubber system, it is set to bead core
The radial outside of 2a.Carcass ply 5 is set up in the bead part 2 of tire width direction two sides.Carcass ply 5 is covered by rubber
Sheet component made of more cords, wherein more cords are arranged on the direction circumferentially orthogonal with tire.Carcass ply 5 exists
The frame configuration of pneumatic tire 1 is formed between the bead part 2 of tire width direction two sides, also, from wheel around bead part 2
It turns back towards outside on the inside of tire width direction, thus surrounds bead part 2.It in the inside of carcass ply 5, is pasted with: by air
The liner 6 for the sheet that the lower rubber of permeability is constituted.
In the tire radial outside of carcass ply 5, it is provided with 1 layer or multilayer banding 7.Banding 7 is: being covered by rubber
Component made of more cords of steel.In the tire radial outside of banding 7, it is provided with (following with the face contacted with road surface
Referred to as " ground plane ") tread rubber 3.In addition, being provided with sidewall rubber 4 in the tire width direction two sides of carcass ply 5.In addition to
Other than above-mentioned component, also according to pneumatic tire 1 function in terms of demand, and be provided with the components such as banding underlay, chafer.
2. the overview of tread contour
It on the surface of tread rubber 3, is formed with: the tread contour exemplified in Fig. 2.In the tread contour, as along
The ditch that is, tap drain of the wide cut of tire circumferentially extending, center tap drain 10 and the tire for being provided with tire width direction center are wide
Spend the shoulder main groove 20 of direction two sides.Moreover, being provided with the central rib being sandwiched between center tap drain 10 and shoulder main groove 20
24 and the tire shoulder flank 26 that is sandwiched between shoulder main groove 20 and ground terminal 22.In addition, flank refers to: connecting in tire circumferential direction
Continuous land portion.Herein, land portion refers to: being divided by ditch and formed and had the part of ground plane.In addition, ground connection
End 22 refers to: the tire width direction end of the ground plane under load condition.
In addition, the first rill 30 is provided with, in the ground terminal of shoulder main groove 20 in the side tire equator E of shoulder main groove 20
22 sides are provided with the second rill 40.In addition, being respectively arranged in the width direction two sides of center tap drain 10: third rill 28.
In addition, being provided with the 4th rill 50 in tire shoulder flank 26.Above-mentioned rill 20,30,40,50 respectively on tire is circumferential with etc. between
It is arranged every or with roughly equal interval.Hereinafter the construction of these rills 20,30,40,50 is described.
3. the construction of tap drain
As shown in Figure 2 to 4, center tap drain 10 is circumferentially extended along tire with zigzag.That is, from tire radial outside
When observation, center tap drain 10 is zigzag.More specifically, center tap drain 10 includes: long ditch portion 11, relative to tire circumferential direction
Obliquely extend；And short ditch portion 12, extend relative to tire peripheral, oblique and towards the direction different from long ditch portion 11.
It is alternately configured by long ditch portion 11 and short ditch portion 12, to form center tap drain 10.
In this way, since center tap drain 10 is zigzag, at center, tap drain 10 becomes long ditch portion 11 and short ditch portion 12
Between the position on boundary be formed with: in Xiang Zhongxin tap drain 10 protrusion 14 outstanding and it is intermediate across center tap drain 10 and with
The opposed recess portion 15 in protrusion 14.
In the present embodiment, as shown in figure 4, center line relative to center tap drain 10, the protrusion 14a on right side and left side
Protrusion 14b do not have overlapping portion in tire circumferential direction, be spaced apart in the protrusion 14b of the protrusion 14a and left side on right side: tire
Gap L in width direction.Moreover, it is judged that in bottom of trench 13, whether there is or not gap Ls.
But the protrusion 14a on right side is towards the protrusion 14b in top outstanding in ditch and left side towards top outstanding in ditch
Portion is in identical position on tire width direction, these above-mentioned tops can also arrange on 1 circle in tire circumferential direction.
In addition, the protrusion 14a on right side and the protrusion 14b in left side can have overlapping portion (in other words, from tire circumferential direction in tire circumferential direction
When observation, the protrusion 14a on right side and the protrusion 14b in left side can be in local overlappings).
As shown in Fig. 3~Fig. 5, at center, the width direction two sides of tap drain 10, are provided with the conical surface 16.The conical surface 16 is: from connecing
The inboard and continuous face of ground to center tap drain 10, as shown in figure 4, the conical surface 16 is: to the center tap drain of central rib 24
The corner of 10 sides carries out the face of the shape after chamfering.Make open end of the center tap drain 10 towards ground plane because of the conical surface 16
Width increase.In addition, the conical surface 16 can reach ground plane, but as shown in figure 5, can also between the conical surface 16 and ground plane shape
Cheng You: the wall portion 17 of little height (such as 0.5mm or so).In the part for being provided with the conical surface 16, the width of center tap drain 10 with
Be gradually increased close to ground plane.The conical surface 16 is, for example, 40 ° or more 50 ° or less relative to the angle of ground plane.
In addition, as shown in figure 3, in the width direction two sides of center tap drain 10, the width of the conical surface 16 is with from center tap drain
The position for tending to protrusion 14 is acted in the position of 10 recess portion 15, and is gradually increased.As a result, center tap drain 10 towards ground plane
Open end is less than angle, θ 2 of the bottom of trench 13 of center tap drain 10 relative to tire circumferential direction relative to the angle, θ 1 of tire circumferential direction.
In addition, the width of the conical surface 16 is bigger, the depth towards bottom of trench 13 is also bigger.Therefore, the depth of the conical surface 16 with
Tend to the position of protrusion 14 from the position of the recess portion 15 of center tap drain 10, and gradually deepens.At the most deep position of the conical surface 16
Depth for example are as follows: the half of the depth to bottom of trench 13 of center tap drain 10.
In the present embodiment, the conical surface 16 as described above is set to: the both sides of long ditch portion 11 and short ditch portion 12.
On the other hand, shoulder main groove 20 is circumferentially extended not with zigzag but with straight along tire.
4. the construction of rill
As shown in Fig. 2, the first rill 30 extends from the shoulder main groove 20 of straight towards the direction of tire equator E.First
One end of rill 30 is in opening at shoulder main groove 20, and the other end is in 24 inner sealing of central rib.
When from tire radial outside, the bending of the first rill 30.Bending section 31 is formed as obtuse angle.As shown in fig. 6, first
The closer part by 20 side of shoulder main groove in the ratio bending section 31 of rill 30 is the biggish slit portion 32 of width.On the other hand, first
The closer part by front end side in ratio bending section 31 of rill 30 is the lesser sipe portion 33 of width.Under load condition, though
Right slit portion 32 is not closed, but sipe portion 33 is closed.The width of slit portion 32 is, for example, 1.9mm or more 2.1mm or less, knife
The width of slot pattern portion 33 is, for example, 0.7mm or more 0.9mm or less.
As shown in FIG. 6 and 7, sipe portion 33 is in the curved interior (that obtuse-angulate side of shape) for becoming the first rill 30
Position have the conical surface 34.Increase sipe portion 33 towards the width of the open end of ground plane.Cone
Face 34 is: near ground plane, from ground plane to the inboard and continuous face of sipe portion 33.In addition, the conical surface 34 can arrive
Up to ground plane, can also be formed between the conical surface 34 and ground plane as shown in Fig. 7 (b): little height (such as 0.5mm
Left and right) wall portion 35.In addition, the conical surface 34 does not reach the bottom of sipe portion 33.By the way that the conical surface 34 is arranged, and make cutter groove flower
The width in line portion 33 is gradually increased with close to ground plane.The conical surface 34 is, for example, 40 ° or more 50 ° relative to the angle of ground plane
Below.The width of the conical surface 34 is gradually increased, and with the trend bending section 31 from the front end of the first rill 30 in bending section 31
Place reaches maximum.As shown in Fig. 7 (a), in slit portion 32 and the not set this conical surface.Therefore, it is thin to be provided only on first for the conical surface 34
Sipe portion 33 in ditch 30.
In addition, as shown in Fig. 2, the second rill 40 extends from the shoulder main groove 20 of straight towards the direction of ground terminal 22.
One end of second rill 40 is in opening at shoulder main groove 20, and the other end is in 26 inner sealing of tire shoulder flank.
When from tire radial outside, the bending of the second rill 40.Bending section 41 is formed as obtuse angle.As shown in fig. 6, second
The ratio bending section 41 of rill 40 is the more biggish slit portion 42 of width by the part of 20 side of shoulder main groove.On the other hand, second is thin
The part that the ratio bending section 41 of ditch 40 is located further forward end side is the lesser sipe portion 43 of width.Under load condition, although narrow
Seam portion 42 is not closed, but sipe portion 43 is closed.The width of slit portion 42 is, for example, 1.9mm or more 2.1mm hereinafter, cutter groove flower
The width in line portion 43 is, for example, 0.7mm or more 0.9mm or less.
As shown in Fig. 6 and Fig. 8, sipe portion 43 is in the curved interior (that obtuse-angulate side of shape) for becoming the second rill 40
Position have the conical surface 44.Increase sipe portion 43 towards the width of the open end of ground plane.Cone
Face 44 is: near ground plane, from ground plane to the inboard and continuous face of sipe portion 43.In addition, the conical surface 44 can arrive
Up to ground plane, can also be formed between the conical surface 44 and ground plane as shown in Fig. 8 (b): little height (such as 0.5mm
Left and right) wall portion 45.In addition, the conical surface 44 does not reach the bottom of sipe portion 43.By the way that the conical surface 44 is arranged, and make cutter groove flower
The width in line portion 43 is gradually increased with close to ground plane.The conical surface 44 is, for example, 40 ° or more 50 ° relative to the angle of ground plane
Below.The width of the conical surface 44 is gradually increased, and with the trend bending section 41 from the front end of the second rill 40 in bending section 41
Place reaches maximum.In slit portion 42 and the not set this conical surface.Therefore, the conical surface 44 is provided only on the flower of the cutter groove in the first rill 30
Line portion 33.
As shown in fig. 6, the slit portion 42 of the slit portion 32 of the first rill 30 and the second rill 40 it is circumferential relative to tire and
Obliquely extend in the same direction.Also, the slit portion 42 of the slit portion 32 of the first rill 30 and the second rill 40 is in same
On straight line.
In addition, the first rill 30 and the same direction of the second rill 40 towards tire circumferential direction are bent.That is, each sipe portion
33,43 extend from the bending section 31,41 of each rill 30,40 towards the same direction of tire circumferential direction respectively.In addition, with the first rill
30 sipe portion 33 is compared, and the sipe portion 43 of the second rill 40 is more towards tire circumferential direction.That is, second is thin
The sipe portion 43 of ditch 40 is relative to 33 phase of sipe portion that tilt angle made of tire circumferential direction is than the first rill 30
It is smaller for tilt angle made of tire circumferential direction.In addition, the sipe portion 43 is one kind of counter drain.Counter drain refers to: wide
The ditch also smaller than the width of tap drain is spent, and is continuously to extend 1 circle in tire circumferential direction or as sipe portion 43
The ditch circumferentially intermittently extended along tire.
As shown in Fig. 2, the first rill 30 and the second rill 40 are respectively arranged at tire width direction two sides.Wherein,
One rill 30 and the second rill 40 are circumferential with opposite court relative to tire in side and the other side of tire width direction
Always it configures.In addition, the first rill 30 and the second rill 40 are in side and the other side of tire width direction and in tire
It is staggered in circumferential direction.That is, the of the other side of the position and tire width direction of the first rill 30 of the side of tire width direction
The position of one rill 30 is inconsistent on tire width direction, in addition, the position of the second rill 40 of the side of tire width direction
It sets and the position of the second rill 40 of the other side of tire width direction is completely inconsistent on tire width direction.
In addition, direction of the third rill 28 from jagged center tap drain 10 towards ground terminal 22 extends.Third rill 28
One end at center tap drain 10 in opening, the other end is in 24 inner sealing of central rib.Third rill 28 be not bent but with
Straight extends.
Third rill 28 has the width with above-mentioned slit portion 32,42 equal extents.In addition, as shown in Fig. 2, third rill
28 include so that the conical surface 29 that the width of third rill 28 towards the open end of ground plane increases.The conical surface 29 is: attached in ground plane
Closely, from ground plane to the inboard and continuous face of third rill 28.In addition, the conical surface 29 can reach ground plane, it can also be with
The case where one rill 30, in the same manner, is formed between the conical surface 29 and ground plane: the wall of little height (such as 0.5mm or so)
Portion.In addition, the conical surface 29 does not reach the bottom of third rill 28.By be arranged the conical surface 29, and make the width of third rill 28 with
Be gradually increased close to ground plane.The conical surface 29 is, for example, 40 ° or more 50 ° or less relative to the angle of ground plane.The conical surface 29
Width is gradually reduced with the direction for tending to ground terminal 22 from center tap drain 10.
In addition, the 4th rill 50 extends in tire shoulder flank 26 along tire width direction as shown in Fig. 2 and Fig. 9.4th
One end of rill 50 is in 26 inner sealing of tire shoulder flank, and the other end is from ground terminal 22 towards tire width direction outer openings.
When from tire radial outside, the 4th rill 50 become the side tire equator E the one end position and
Bending.The specific position of the bending section 51 is: for example, with length on the tire width direction of the 4th rill 50 (from described one
Hold to length on the tire width direction of ground terminal 22) 1/4 within length and from one end direction of the 4th rill 50
22 side of ground terminal and the position towards tire width direction.Bending section 51 is for example formed as 140 ° or more 160 ° of obtuse angles below.
As shown in Figure 10, the 4th rill 50 formation are as follows: in the siping of closure under load condition.4th rill 50
Width is, for example, 0.7mm or more 0.9mm or less.The depth of 4th rill 50 tends to the one end from bending section 51 and gradually subtracts
It is small.
As shown in FIG. 9 and 10, at the position of the curved interior of the 4th rill 50, it is provided with the conical surface 54.Because of the conical surface 54
And the width of the open end towards ground plane of the 4th rill 50 is increased.The conical surface 54 is: near ground plane, from ground plane
To the inboard and continuous face of the 4th rill 50.In addition, the conical surface 54 can reach ground plane, it can also be as shown in Figure 10,
It is formed between the conical surface 54 and ground plane: the wall portion 56 of little height (such as 0.5mm or so).In addition, the conical surface 54 does not reach
The bottom of 4th rill 50.By the way that the conical surface 54 is arranged, so that the width of the 4th rill 50 is gradually increased with close to ground plane.
The conical surface 54 is, for example, 35 ° or more 45 ° or less relative to the angle of ground plane.The width of the conical surface 54 tends to from ground terminal 22
Bending section 51, and be gradually increased, and reach maximum at bending section 51.Also tire is more leaned in the ratio bending section 51 of the 4th rill 50
The position of the equator side E, the ground connection that is connected with bending section 51 are provided with the conical surface 54.
The ratio bending section 51 of 4th rill 50 is more by the part of 22 side of ground terminal: the 3 dimension cutter groove flowers exemplified in Figure 11
Line 55.3 dimension siping 55 refer to: shape changed siping on its depth direction.It is real as shown in Figure 11 (c)
Apply the 3 dimension formation of siping 55 of mode are as follows: at position more deeper than ground plane, show cutting in the face parallel with ground plane
It is made of on face crest portion 57 and trough portion 58 wavy.Moreover, crest portion 57 and trough portion 58 are in 3 dimensions as shown in Figure 11 (b)
Zigzag is extended on the depth direction of siping 55.
As shown in Fig. 2, the 4th rill 50 is set to tire width direction two sides.4th rill 50 is configured to: in tire
The two sides of width direction are in circumferentially to be oppositely directed to relative to tire.But can also to be only arranged at tire wide for the 4th rill 50
The either side on direction is spent, in such a situation it is preferred that being set to the side OUT (vehicle outside) when being assemblied in vehicle.
As shown in figure 9, other than the 4th rill 50, there is also above-mentioned second rills 40 in tire shoulder flank 26.4th
The sipe portion 43 of rill 50 and the second rill 40 has overlapping portion on tire width direction.Described the one of 4th rill 50
Although end close to the second rill 40 sipe portion 43, the nearby side of sipe portion 43 then be in closing without with knife
Slot pattern portion 43 is connected to.
5. the effect of embodiment
In the pneumatic tire 1 of embodiment, the width direction side of shoulder main groove 20 is provided with the first rill 30,
The width direction other side of shoulder main groove 20 is provided with the second rill 40, and therefore, central rib 24 and tire shoulder flank 26 connect
Ground presents good.Also, since the first rill 30 and the second rill 40 are bent, when in central rib 24 and tire
When shoulder flank 26 is applied with biggish stress, the part of the two sides of the first rill 30 and the second rill 40 can take turns each other
It is engaged in tire width direction, thus the lateral stiffness (rigidity on tire width direction) of central rib 24 and tire shoulder flank 26
Ensured.Herein, although lateral stiffness is easy drop near the shoulder main groove 20 extended along tire circumferential direction with straight
It is low, still, it can make up for it the lateral stiffness near shoulder main groove 20 because of the first rill 30 and the bending of the second rill 40.
In addition, the slit portion 42 of the slit portion 32 of the first rill 30 and the second rill 40 it is circumferential relative to tire and towards same
One direction obliquely extends, also, the first rill 30 and the same direction of the second rill 40 towards tire circumferential direction are bent, because
This, the first rill 30 and the second rill 40 are configured that and are staggered in tire circumferential direction.As a result, in central rib 24 and tire shoulder
Flank 26, lateral stiffness is self-evident, and longitudinal rigid (rigidity in tire circumferential direction) also realizes homogenization in tire circumferential direction.
In addition, the sipe portion 33 of 43 to the first rill 30 of sipe portion of the second rill 40 is more towards tire week
To therefore, in the tire shoulder flank 26 for being provided with the second rill 40, will circumferentially being drained readily along tire.In addition, second
The sipe portion 33 of 43 to the first rill 30 of sipe portion of rill 40 is circumferential (that is, comparatively, the more towards tire
The sipe portion 43 of two rills 40 is circumferential more towards tire and extends, the sipe portion 33 of the first rill 30 more towards
Tire width direction and extend), to can also bring: being able to maintain that longitudinal direction in the tire shoulder flank 26 for being provided with the second rill 40
The effect of rigidity makes the ground connection property for being provided with the central rib 24 of the first rill 30 that better effect be presented.
As described above, in the pneumatic tire 1 of embodiment, ground connection property, the rigid balancing in tire circumferential direction and draining
Property is ensured.As a result, the performances such as control stability of pneumatic tire 1 are also just ensured.
Herein, sipe portion is further towards the rill of tire circumferential direction that is, no matter the second rill 40 is set to center
Which side of flank 24 and tire shoulder flank 26 can obtain said effect.Therefore, even if making on the contrary with embodiment
One rill 30 is set to tire shoulder flank 26 and the second rill 40 is made to be set to central rib 24, can also obtain said effect.
However, the flank (that is, tire shoulder flank 26 in present embodiment) of 22 side of ground terminal can substantially influence braking ability.
Moreover, drainage and longitudinal rigid can also impact braking ability.Therefore, if in terms of drainage and longitudinal rigid
The second rill 40 with certain effect as in the present embodiment, is arranged at tire shoulder flank 26, then braking ability will be in
It is now good.
In addition, the flank (that is, central rib 24 in present embodiment) of the side tire equator E can substantially influence operation stabilization
Property.Moreover, ground connection property can also impact control stability.Therefore, if it is more effective first thin in terms of ground connection property
Ditch 30 is set to central rib 24, then control stability will be presented well.
In addition, as described above, in the present embodiment, the slit portion of the slit portion 32 of the first rill 30 and the second rill 40
42 obliquely extend towards same direction relative to tire is circumferential, also, the first rill 30 and the second rill 40 are towards tire
Circumferential same direction bending.On this basis, in the present embodiment, carefully due to the slit portion 32 of the first rill 30 and second
The slit portion 42 of ditch 40 is on same straight line, and therefore, the first rill 30 and the second rill 40 are staggered in tire circumferential direction really.
Therefore, the rigidity of the central rib 24 near shoulder main groove 20 and tire shoulder flank 26 realizes homogenization in tire circumferential direction.
In addition, in the first rill 30 and the second rill 40, due to than bending section 31,41 closer to 20 side of shoulder main groove
Slit portion 32,42 width it is larger, therefore, ground connection property ensured.In addition, due to than bending section 31,41 more forwardly of portions
Dividing is the lesser sipe portion 33,43 of width, so that rigidity is ensured.Also, by being arranged in sipe portion 33,43
The conical surface, so that the rigidity near bending section 31,41 is ensured.
Also, above-mentioned center tap drain 10 is zigzag, ensures that the rigidity of central rib 24, in addition, because having cone
Face 16 and ensure drainage.Therefore, it is ensured by the combination of center tap drain 10 and the first rill, the second rill 30,40
The rigidity and drainage of tire entirety.In addition, above-mentioned 4th rill 50 can be improved the ground connection property of tire shoulder flank 26 certainly, also
Because ensuring drainage towards tire width direction outer openings.Therefore, pass through the 4th rill 50 and the first rill, second
The combination of rill 30,40 and the ground connection property and drainage for ensuring tire entirety.
6. modification
For the above embodiment, in the range of without departing from inventive concept, various omissions, displacement, change can be carried out.
At center tap drain not as embodiment described above with zigzag but circumferentially extended with straight along tire
In the case where, the first rill 30 and the second rill 40 can be set in center tap drain.
In addition, in the first rill and the second rill, the part than bending section closer to tap drain side is not limited to width
Biggish slit portion, in addition, the part for being located further forward (closing end side) than bending section is not limited to the lesser siping of width
Portion.For example, entirety can also be by width than the sipe portion in above embodiment in the first rill and the second rill
33, the bigger slit portion of 43 width is constituted.
Claims (6)
1. a kind of pneumatic tire is circumferentially having first along tire with the width direction side of the tap drain of straight extension
Rill, and have the second rill in the other side, first rill and second rill are formed are as follows: one end is with straight
In opening at the tap drain extended, the other end in land portion inner sealing,
The pneumatic tire is characterized in that,
First rill and the same direction of second rill towards tire circumferential direction are bent,
The ratio bending section of first rill is more leaned on closer to the part of the one end and the ratio bending section of second rill
The part of the nearly one end is circumferential relative to tire and obliquely extends towards same direction,
The ratio institute of first rill is compared closer to the part of the another side in bending section described in the ratio of second rill
Bending section is stated closer to the part of the another side, more towards tire circumferential direction.
2. pneumatic tire according to claim 1, which is characterized in that
Across the tap drain extended with straight, and tire equator side is provided with first rill, and in ground connection end side
It is provided with second rill.
3. pneumatic tire according to claim 1 or 2, which is characterized in that
The ratio bending section of first rill is more leaned on closer to the part of the one end and the ratio bending section of second rill
The nearly one end is partially on same straight line.
4. pneumatic tire according to any one of claim 1 to 3, which is characterized in that
In first rill and second rill, the part than bending section closer to the another side is: width
Less than than bending section closer to the part of the one end width siping, in the curved interior of the siping
Position is provided with so that the conical surface that the width towards the open end of ground plane increases.
5. pneumatic tire according to claim 4, which is characterized in that
Be not provided with the conical surface in the part than the bending section closer to the one end, the width of the conical surface with from
The front end of first rill and second rill, which is risen, to tend to the bending section and is gradually increased and at the bending section
Reach maximum.
6. pneumatic tire according to any one of claim 1 to 5, which is characterized in that
The bending section of first rill and second rill is formed as obtuse angle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017199828A JP6949654B2 (en) | 2017-10-13 | 2017-10-13 | Pneumatic tires |
| JP2017-199828 | 2017-10-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109664685A true CN109664685A (en) | 2019-04-23 |
| CN109664685B CN109664685B (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811105477.0A Active CN109664685B (en) | 2017-10-13 | 2018-09-21 | Pneumatic tire |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6949654B2 (en) |
| CN (1) | CN109664685B (en) |
| DE (1) | DE102018216400B4 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1505569A (en) * | 2001-03-30 | 2004-06-16 | 倍耐力轮胎公司 | Tread pattern for car tire |
| CN104118279A (en) * | 2013-04-23 | 2014-10-29 | 住友橡胶工业株式会社 | Inflation tire |
| CN104842718A (en) * | 2014-02-14 | 2015-08-19 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN106232390A (en) * | 2014-04-22 | 2016-12-14 | 横滨橡胶株式会社 | Pneumatic tire |
| US9636951B2 (en) * | 2001-03-30 | 2017-05-02 | Pirelli Pneumatici S.P.A. | Tire with tread having continuous rib |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5781566A (en) | 1980-11-04 | 1982-05-21 | Fujita Corp | Construction of cylindrical structure |
| JP2772638B2 (en) * | 1987-11-16 | 1998-07-02 | 横浜ゴム株式会社 | Pneumatic radial tire |
| JPH06191226A (en) | 1992-12-25 | 1994-07-12 | Bridgestone Corp | Pneumatic tire |
| JP4969874B2 (en) * | 2006-03-06 | 2012-07-04 | 株式会社ブリヂストン | Pneumatic tire |
| US9434212B2 (en) * | 2011-07-26 | 2016-09-06 | Bridgestone Corporation | Tire |
| JP5391262B2 (en) * | 2011-12-29 | 2014-01-15 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP5781566B2 (en) | 2013-07-10 | 2015-09-24 | 株式会社ブリヂストン | Pneumatic tire |
| JP6400423B2 (en) | 2014-10-09 | 2018-10-03 | 東洋ゴム工業株式会社 | Pneumatic tire |
| JP6146490B1 (en) * | 2016-01-19 | 2017-06-14 | 横浜ゴム株式会社 | Pneumatic tire |
| JP6720551B2 (en) | 2016-01-21 | 2020-07-08 | 横浜ゴム株式会社 | Pneumatic tire |
| JP2017199828A (en) | 2016-04-28 | 2017-11-02 | 山本化成株式会社 | Organic transistor |
-
2017
- 2017-10-13 JP JP2017199828A patent/JP6949654B2/en active Active
-
2018
- 2018-09-21 CN CN201811105477.0A patent/CN109664685B/en active Active
- 2018-09-26 DE DE102018216400.2A patent/DE102018216400B4/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1505569A (en) * | 2001-03-30 | 2004-06-16 | 倍耐力轮胎公司 | Tread pattern for car tire |
| US9636951B2 (en) * | 2001-03-30 | 2017-05-02 | Pirelli Pneumatici S.P.A. | Tire with tread having continuous rib |
| CN104118279A (en) * | 2013-04-23 | 2014-10-29 | 住友橡胶工业株式会社 | Inflation tire |
| CN104842718A (en) * | 2014-02-14 | 2015-08-19 | 住友橡胶工业株式会社 | Pneumatic tire |
| CN106232390A (en) * | 2014-04-22 | 2016-12-14 | 横滨橡胶株式会社 | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6949654B2 (en) | 2021-10-13 |
| DE102018216400A1 (en) | 2019-04-18 |
| JP2019073129A (en) | 2019-05-16 |
| CN109664685B (en) | 2021-01-15 |
| DE102018216400B4 (en) | 2023-05-17 |
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