CN101190644A - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
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- CN101190644A CN101190644A CNA2007101948660A CN200710194866A CN101190644A CN 101190644 A CN101190644 A CN 101190644A CN A2007101948660 A CNA2007101948660 A CN A2007101948660A CN 200710194866 A CN200710194866 A CN 200710194866A CN 101190644 A CN101190644 A CN 101190644A
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- tire
- tire sipe
- sipe
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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
- B60C11/12—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
- B60C11/0306—Patterns comprising block rows or discontinuous ribs
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C11/1218—Three-dimensional shape with regard to depth and extending direction
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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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C2011/1213—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe sinusoidal or zigzag at the tread surface
Abstract
A pneumatic tire simultaneously satisfying both on-ice turning performance and ice braking performance and also simultaneously satisfying both dry turning performance and dry braking performance. The pneumatic tire has a tread pattern (T) having land sections such as blocks (1) in which sipes (10) are formed. First sipes (10) are provided in a region (Ai) on the inner side, in the direction of installation of the tire on the vehicle, of a tire equator line (CL), and second sipes (20) are provided in a region (Ao) on the outer side of the tire equator line (CL). The first sipes (10) each have a recessed or projected engagement section in a cross-section parallel to the tire equator line (CL). In each second sipe (20), an inner wall surface extending in a tire width direction (WD) or in a direction inclined from the tire width direction has rows of grooves and ridges, and each row has a portion inclined in the direction where the sipe are formed.
Description
Technical field
The present invention relates to a kind of air-inflation tyre with tread contour, be especially suitable for use as winter tire (using tire winter), this tread contour is formed with the grounding parts with so-called three-dimensional tire sipe.
Background technology
In the past, for the purpose of the ice and snow road rideability that improves the winter tire, the known structure that a plurality of tire sipes of a kind of each one at tire tread (central part, connection (mediate) portion, tire shoulder portion) configuration are arranged.By in pattern block, forming such tire sipe, improved edge effect, water removal effect and condensation effect, therefore tend to increase the bar number of tire sipe in recent years.
But, when the bar number that increases tire sipe improves tire sipe density, can produce such problem: though increased number of edges, but tire sipe is excessively collapsed because the pattern block whole rigidity reduces, can weaken edge effect on the contrary, in addition, ground contact area diminishes, and the ice and snow road rideability is reduced.Therefore, as suppressing the method that tire sipe collapses, develop a kind of so-called 3D tire sipe (three-dimensional tire sipe).
For example, disclose a kind of three-dimensional tire sipe in following patent documentation 1, the concavo-convex tire sipe length direction (horizontal direction) that is listed in of this tire sipe internal face is gone up alternately, and connects with zig-zag on depth direction simultaneously.In this tire sipe, owing to concavo-convexly be listed in a lateral direction the swing of zig-zag ground, it is stronger along the effect of horizontal direction activity therefore to suppress the pattern block sheet, on the contrary, suppress its along the effect of fore-and-aft direction activity a little less than.
In addition, in following patent documentation 2, disclose a kind of wavy tire sipe and had reference plane that extends along depth direction and the three-dimensional tire sipe that on its outside top and inboard top, is respectively equipped with the concavity engagement section.In this tire sipe, owing to be respectively equipped with the concavity engagement section on the example top of outside top and lining, it is stronger along the effect of fore-and-aft direction activity therefore to suppress the pattern block sheet, on the contrary, suppress its along the effect of horizontal direction activity a little less than.
Patent documentation 1: No. 3504632 communique of Japan's special permission
Patent documentation 2: No. 3516647 communique of Japan's special permission
Summary of the invention
But three-dimensional tire sipe as described above is so that the prerequisite that is configured to of identical type to be set in each one of tyre surface, therefore when being provided with three-dimensional tire sipe as described above, being difficult to make ice and snow road turning performance and ice and snow road deceleration and stopping performance and depositing.In addition, even for the dry pavement performance, also be difficult to make turning performance and deceleration and stopping performance and deposit.
Therefore, the object of the present invention is to provide a kind of air-inflation tyre that can make ice and snow road turning performance and ice and snow road deceleration and stopping performance and deposit and in the dry pavement performance, also can make turning performance and deceleration and stopping performance and deposit.
Adopt the present invention described as follows, can achieve the above object.
Promptly, air-inflation tyre of the present invention has tread contour, this tread contour has the grounding parts that is formed with a plurality of tire sipes, it is characterized in that, installation area inside at the tire equator line is provided with the 1st tire sipe (except being equivalent to the tire sipe of the 2nd tire sipe), the 1st tire sipe with the cross section of tire equator line parallel on be provided with the engagement section of concavity or convex; And, zone outside the installation of tire equator line is provided with the 2nd tire sipe, the 2nd tire sipe have concavo-convex row along tire width direction or with respect to the internal face that tire width direction bevelled direction is extended, these concavo-convex row have along tire sipe and form direction bevelled part.At this, " installing inboard " is meant the area inside that becomes the tire equator line at this mounting of tyre under the state of vehicle, and " outside is installed " is meant the zone that becomes the outside of tire equator line at this mounting of tyre under the state of vehicle.In addition, " tire sipe formation direction " is meant the direction of tire sipe Central Line, and for example under the situation that is wavy tire sipe, the Central Line of amplitude is that tire sipe forms direction.
Adopt air-inflation tyre of the present invention,, be provided with inhibition along the 1st stronger tire sipe of fore-and-aft direction activity effect in installation area inside to the bigger tire equator line of the contribution of tire deceleration and stopping performance; To the zone outside the installation of the bigger tire equator line of the contribution of tire turning performance, be provided with inhibition along the 2nd stronger tire sipe of horizontal direction activity effect.Therefore, can make ice and snow road turning performance and ice and snow road deceleration and stopping performance and deposit,, also can make its turning performance and deceleration and stopping performance and deposit even for the dry pavement performance.That is and since the 1st tire sipe with the cross section of tire equator line parallel on be provided with the engagement section of concavity or convex, therefore when tire produced fore-and-aft direction power, it produced engaging effect, can suppress movable and improve deceleration and stopping performance along fore-and-aft direction.In addition, because the 2nd tire sipe has concavo-convex row along tire width direction or with respect to the internal face that tire width direction bevelled direction is extended, and these concavo-convex row have along tire sipe formation direction bevelled part, therefore when tire produces transverse force, the concavo-convex row of inner wall surface thereof produce the engaging effect, can suppress to improve turning performance along the horizontal direction activity.
Usually known: at Ackermann steer angle, can apply bigger load to exterior lateral area is installed, on the contrary, medial region is relatively large to the contribution of deceleration and stopping performance installing.In nearest vehicle, the vehicle of negative camber angle more (particularly light van), in this case, greater than the load that the outside is installed, the fore-and-aft direction length of ground plane is also elongated at the load of the installation area inside of tire equator line.Therefore, in such vehicle, particularly will suppress to be arranged at the installation medial region along the 1st stronger tire sipe of the effect of fore-and-aft direction activity is special actv..
In foregoing, preferably be provided with a kind of like this 2nd tire sipe: the concavo-convex row of above-mentioned internal face have the part along tire sipe formation direction towards the part of the lopsidedness lopsidedness opposite with this part with court.By the 2nd such tire sipe is set, when tire produced transverse force, the engaging effect of the concavo-convex row of internal face further strengthened, and can suppress effectively further to improve turning performance along the horizontal direction activity.
In addition, above-mentioned the 1st tire sipe engagement section that preferably has above-mentioned concavity or convex at the top of wavy tire sipe fore-and-aft direction both sides.By the top in wavy tire sipe fore-and-aft direction both sides the engagement section of above-mentioned concavity or convex is set, when tire produced fore-and-aft direction power, its engaging effect strengthened, and can suppress movable and further improve deceleration and stopping performance along fore-and-aft direction effectively.
Description of drawings
Fig. 1 is the expansion drawing of an example of the expression airtyred tread contour of the present invention.
Fig. 2 is the main portion enlarged drawing of the tread block of presentation graphs 1, (a) is fragmentary perspective cross sectional view, (b) is the I-I cutaway view of (a), (c) is II-II cutaway view in (a).
Fig. 3 is used to illustrate the main portion enlarged drawing that concerns between reference plane of the present invention and the engagement section.
Fig. 4 is the main portion enlarged drawing of expression the 1st other examples of tire sipe of the present invention.
Fig. 5 is the fragmentary perspective cross sectional view of the pattern block main portion of expression formation the 2nd tire sipe of the present invention.
Fig. 6 is the scheme drawing of the present invention's the 2nd tire sipe, (a) is the cross-sectional plane of tire sipe, (b) is the scheme drawing of unearthed state, (c) is the scheme drawing of ground state.
Fig. 7 is the scheme drawing of expression the 2nd other examples of tire sipe of the present invention.
The specific embodiment
Below, with reference to the description of drawings embodiments of the present invention.Fig. 1 is the expansion drawing of an example of the airtyred tread contour of expression the present invention.Fig. 2～Fig. 3 is the main portion figure of an example of airtyred the 1st tire sipe of expression the present invention, and Fig. 5～Fig. 6 is the main portion figure of an example of airtyred the 2nd tire sipe of expression the present invention.
As shown in Figure 1, air-inflation tyre of the present invention has tread contour T, and this tread contour T has pattern block 1 grounding parts such as grade that is formed with a plurality of tire sipes 10.Present embodiment shows and is formed with pattern block 1 that is marked off by circumferential groove 2, traverse furrow 3,5 and valley 4 and the example that is arranged with 6 row pattern blocks 1 along tire width direction.
In each pattern block 1, be formed with multiple row tire sipe 10 towards tire width direction, the both ends open of each tire sipe 10 is in the ditch adjacent with pattern block 1, but be not limited thereto, can suitably use respectively according to pattern structure and not expose the tire sipe of the interior example that ends at pattern block 1 sidewall, or only make the tire sipe of one-sided termination from the routine wall of pattern block 1.
Be provided with the 1st tire sipe 10 (except being equivalent to the tire sipe of the 2nd tire sipe 20) at the installation area inside Ai of the airtyred tire equator line of the present invention CL, the 1st tire sipe 10 is provided with the engagement section 11 of concavity or convex on the cross section parallel with tire equator line CL.As Fig. 2～shown in Figure 3, the example that is provided with concavity engagement section 11 on top 10a, the 10b of the wavy tire sipe fore-and-aft direction both sides of the 1st tire sipe 10 has been shown in the present embodiment.In the present embodiment, also can substitute concavity engagement section 11, and convex engagement section 11 is set.
Consider that from improving ice and snow road deceleration and stopping performance and dry pavement deceleration and stopping performance aspect the 1st tire sipe 10 preferably accounts for and is arranged at more than 60% of installing among the medial region Ai of tire sipe, more preferably accounts for more than 80%, further preferably accounts for more than 90%.
The 1st tire sipe 10 has the reference plane B that the wave from pattern block 1 surface extends along depth direction, and this reference plane B all has roughly the same shape of cross section in any degree of depth.Wave is not defined as and approaches sinusoidal waveform, can be the arbitrary shape such as the shape that approaches wave or square wave, zig-zag of alternate combinations straight line and curve yet.
Be preferably, the cycle of wave is in the characteristic that is suitable for manifesting so-called wave-shaped sipes, and is 1.5～4mm, and amplitude (both sides overhead height sum) is preferably 1～2mm.In addition, the degree of depth of the 1st tire sipe 10 is preferably 3～10mm.
Shown in Fig. 2 (b), being provided with the vertical section on the outside top 10a of reference plane B is the engagement section 11a of concavity, and shown in Fig. 2 (c), being provided with the vertical section on inboard top 10b is the engagement section 11b of concavity.Engagement section 11a and engagement section 11b all form with cone shape concave surface.
In the present invention, though connect the shape that depends on engagement section 11a, 11b, be preferably as shown in figure 3, engagement section 11a, the 11b of the 1st tire sipe 10 be 0.5～1.5mm apart from the extreme depth D of reference plane B.Under the situation of extreme depth D, exist the 1st tire sipe 10 to suppress the inadequate tendency of effect of collapsing less than 0.5mm; At extreme depth D during greater than 1.5mm, the tendency that the resistance when having the demoulding after the tyre vulcanization moulding increases.
In addition, the largest interval W1 of the demarcation line 12 of engagement section 11a, 11b and reference plane B on depth direction is preferably 0.5～2.5mm.Under the situation of largest interval W1, exist and suppress the inadequate tendency of effect that pattern block 1 collapses less than 0.5mm; At largest interval W1 during greater than 2.5mm, the relation in view of itself and extreme depth D relatively makes the angle of inclination of engagement section 11a, 11b diminish, and therefore exists and suppresses the inadequate tendency of effect that pattern block 1 collapses.
Last when having a plurality of engagement section 11a, 11b, extreme depth portion between the upper and lower every being preferably 0.5～1.5mm.In addition, engagement section 11a and engagement section 11b also can be arranged at differing heights, but are preferably and are arranged at equal height aspect the pattern block collapse direction influences reducing to be subjected to.
In the present invention, the furrow width of the 1st tire sipe 10 is more little, and the effect that engagement section inhibition pattern block 1 collapses is strong more, but when furrow width is too small, is difficult to produce edge part, and edge effect reduces, so furrow width is preferably 0.2～0.7mm.
In the present invention,, therefore, improve the density of tire sipe, can increase amount of edge and further improve edge effect by the bar number that increases by the 1st tire sipe 10 because that engagement section 11a, 11b suppress the effect that pattern block 1 collapses is stronger.Consider that from such aspect in the present invention, tire sipe density is preferably 0.1～0.3mm/mm
2, 0.15～0.3mm/mm more preferably
2
The engagement section 11 of the 1st tire sipe 10 for example also can be the structure shown in Fig. 4 (a1)～(b2).In addition, Fig. 4 (a1) and (b1) expression longitudinal section, the Fig. 4 (a2) and (b2) front view of expression and the outstanding side wall surface faced of tire sipe.
Fig. 4 (a1) and (a2) shown in structure be that the vertical section is the example that the engagement section 11 of concavity forms with hemispheric concave surface.Be easy to obtain the engaging power higher in the hemispheric concave surface than coniform concave surface.
Fig. 4 (b1) and (b2) shown in structure be that the vertical section is the example that the engagement section 11 of concavity forms with the concave surface that is made of orthogonal and 2 faces demarcation line level roughly.In this engagement section 11,,, therefore can fully obtain the engaging power of transverse direction because the reference plane B of the 1st tire sipe 10 is a waveform etc. though the power that engages of horizontal direction (in Fig. 4 (b1) with the vertical direction of paper) diminishes.In addition, same as described above, also the concave surface that can constitute with the face of cylinder by level forms the engagement section.
On the other hand, regional Ao outside the installation of the airtyred tire equator line of the present invention CL is provided with the 2nd tire sipe 20, the 2nd tire sipe 20 have concavo-convex row along tire width direction WD or with respect to the internal face 23 that tire width direction bevelled direction is extended, these concavo-convex row have along tire sipe and form direction bevelled part.As Fig. 5～shown in Figure 6, present embodiment shows the example that is provided with the 2nd tire sipe 20, the concavo-convex row of the internal face 23 of the 2nd tire sipe 20 have section 1 S1 and part 2 S2, this section 1 S1 on tire width direction WD to lopsidedness, this part 2 S2 to the opposite lopsidedness of this section 1 S1.
Consider that from improving ice and snow road turning performance and dry pavement turning performance aspect the 2nd tire sipe 20 preferably accounts for and is arranged at more than 60% of tire sipe that exterior lateral area Ao is installed, and more preferably accounts for more than 80%, further preferably accounts for more than 90%.
Fig. 5 is the fragmentary perspective cross sectional view of expression pattern block main portion of the present invention.In this Fig. 5, block the part of pattern block 1 and the internal face 23 of the 2nd tire sipe 20 is exposed, thereby find out the concaveconvex shape of internal face 23 easily.
Present embodiment shows the example that is provided with the 2nd tire sipe 20, this tire sipe 20 is connected with section 1 S1, part 2 S2, section 1 S1 successively along depth direction, and section 1 S1 is positioned at the parallel face with grounding parts ground plane 1a with the demarcation line of part 2 S2.
The vertical cross sectional shape of concavo-convex row with the 2nd tire sipe 20 is not defined as and approaches sinusoidal waveform, can be the wave, the square wave that form of alternate combinations straight line and curve yet, approach arbitrary shapes such as zig-zag.Be suitable for manifesting aspect the characteristic of so-called wave-shaped sipes, the concavo-convex cycle of this cross sectional shape (distance between for example protruding-protruding top) is preferably 1.5～5mm, and amplitude (both sides overhead height sum) is preferably 1.5～5mm.
The concavo-convex cycle of section 1 S1 and part 2 S2 and amplitude can identical, also can be different, but preferably both cycles identical with amplitude.In addition, when the cycle that changes section 1 S1 and part 2 S2, amplitude, preferably cycle, amplitude are adjusted into and make both interface continuous.Thus, can connect smoothly by wavy demarcation line both are set, thereby the direction of tilt that can make the direction of tilt of concavo-convex row of section 1 S1 and part 2 S2 is asymmetric with respect to the normal direction of grounding parts ground plane 1a.
Then, size of each one etc. is described.Section 1 S1 of the present invention or part 2 S2 are preferably 1.5～3mm along the width of normal direction separately.In addition, the overall depth of the 2nd tire sipe 20 is 40～80% of the tap drain degree of depth, i.e. 4～8mm.Therefore, section 1 S1 is preferably 2～4 sections with hop count is set being connected of part 2 S2, more preferably 3 sections.
In addition, section 1 S1 and part 2 S2 are preferably 30～70 ° with respect to the angle of inclination of normal direction separately, most preferably are 45 °.In this angle during less than 30 °, the tendency that the snap action when existing pattern block to collapse between the raised line of tire sipe internal face 23 and recessed reduces; In this angle during greater than 70 °, exist near the length that produces bending force the ground plane become relatively big, in pattern block the ground pressure uneven tendency that is easy to become.
Collapse, be suitable for simultaneously manifesting aspect the edge effect suitably suppressing pattern block, the furrow width of the 2nd tire sipe 20 is preferably 0.2～0.7mm, more preferably 0.2～0.4mm.
In the present invention,, therefore improve the density of tire sipe, can increase amount of edge and further improve edge effect by the bar number that increases by the 2nd tire sipe 20 because that part 2 S2 suppresses the effect that pattern block 1 collapses is stronger.Consider that from such aspect in the present invention, tire sipe density is preferably 0.1～0.3mm/mm
2, 0.15～0.25mm/mm more preferably
2
Usually, on 1 pattern block 1, be formed with a plurality of the 2nd tire sipes 20, but the 2nd adjacent tire sipe 20 each other can for identical shaped, also can be different wave-likes, angle of inclination, concavo-convex cycle, amplitude.But, making the good aspect of release property after the tyre vulcanization moulding, shape is identical each other for preferred the 2nd adjacent tire sipe 20.
In the present invention, section 1 and part 2 have the part that alternately is connected setting along the tire sipe depth direction and get final product, and for example also can be the tire sipe shapes shown in Fig. 7 (a)～(c).In the figure, schematically with being expressed as 11, will being expressed as 12 in the concavo-convex row of tire sipe to the outstanding raised line in the paper outside to the inboard outstanding raised line of paper.
Fig. 7 (a) shows section 1 S1 and is connected setting with part 2 S2, also further is connected with the example of concavo-convex row along the 3rd part S3 of grounding parts ground plane normal direction extension in its ground plane one side.For under the situation of this tire sipe also being,, can when collapsing, pattern block obtain the snap action between the raised line of tire sipe internal face and recessed by section 1 S1 and part 2 S2 are set.In addition, because the existence of the 3rd part S3 can not increase the bending length of part 2 S2 activity, therefore, can improve the homogeneity of the ground pressure in the pattern block in the same manner with the situation of above-mentioned embodiment.
Fig. 7 (b) shows and makes that hop count is set section 1 S1 and being connected of part 2 S2 is 4 sections example.Under the situation that is this tire sipe, compare with the situation of 3 segment structures, can further improve the homogeneity of the ground pressure in the pattern block.
Fig. 7 (c) shows alternative direct connection section 1 S1 and part 2 S2 is set, and connects the example that section 1 S1 and part 2 S2 are set and clip the 4th short part S4 ground.The 4th part S4 also can be concavo-convex row connect section 1 S1 and part 2 S2 along the wavy tire sipe of the normal direction extension of grounding parts, with curved surface a shape.By clipping the 4th such part S4, can keep to a certain extent and suppress ground pressure homogeneity in effect that pattern block collapses and the pattern block, improve the release property after the tyre vulcanization moulding simultaneously.
Air-inflation tyre of the present invention is except that the tread contour T that has as described above, and all the other are identical with common air-inflation tyre, and material known, shape, structure, manufacture method etc. all can be used for the present invention in the past.
Air-inflation tyre of the present invention plays action effect as described above, and the ice and snow road rideability is good, therefore is especially suitable for use as the winter tire.
Other embodiments
Below, other embodiments of the present invention are described.
(1) though above-mentioned embodiment shows the example of the pattern block that is formed with shape shown in Figure 1, pattern block is not defined as this shape, can be the pattern block of square, parallelogram, vee shape, 5 limit shapes or curve keynote roughly yet.In addition, also can substitute pattern block and form the bar shaped decorative pattern that extends along the circumferential linearity of tire, the bar shaped decorative pattern that extends along the circumferential zig-zag of tire or cros-rib tread etc.
(2) though above-mentioned embodiment shows the example that is formed with the multiple row tire sipe towards tire width direction, the formation direction of palette knife groove decorative pattern (Central Line's direction) also can be with respect to tire width direction bevelled direction.But, from the turning performance and the deceleration and stopping performance that make tire and deposit the aspect and consider that the angle that tire sipe forms direction and tire width direction is preferably 0 ± 45 °, more preferably 0 ± 20 °, more preferably 0 ± 10 °.
(3) form example with the pattern block Surface Vertical though above-mentioned embodiment shows tire sipe, palette knife groove decorative pattern also can have some (for example below 15 °) to tilt with respect to the pattern block normal to a surface.
(4) though above-mentioned embodiment shows the example that the tire sipe of the concavo-convex row zig-zag crustal inclination of the internal face among the present invention is applied to all tire sipes in the tread contour, but also can only be applied to a part of tire sipe in the same pattern block, in addition, also can only be applied to the grounding parts of a part of pattern block etc. in a plurality of pattern blocks.Only when a part of pattern block is used tire sipe of the present invention, the pattern block that particularly is applied to be located at tire tire shoulder portion is an actv..
(5) though above-mentioned embodiment shows the example of the 1st tire sipe of Fig. 2～shown in Figure 4, but the 1st tire sipe with the cross section of tire equator line parallel on be provided with concavity or convex the engagement section get final product, the described tire sipe of following patent documentation all can be applicable to the present invention.
Promptly, as the example of the 1st tire sipe, can exemplify out disclosed tire sipe in Japanese kokai publication hei 4-310407 communique, Japanese kokai publication hei 5-58118 communique, Japanese kokai publication hei 12-6619 communique, Japanese kokai publication hei 10-80923 communique, Japanese kokai publication hei 12-177330 communique etc.
(6) though the example of the 2nd tire sipe of Fig. 5～shown in Figure 7 has been shown in the above-mentioned embodiment, but, as the 2nd tire sipe 20, as long as the internal face that extends along tire width direction has concavo-convex row and this concavo-convex row have along the tire width direction bevelled partly, the described tire sipe of following patent documentation all can be applicable to the present invention.
That is,, can exemplify out disclosed tire sipe in Japanese kokai publication hei 10-258615 communique, Japanese kokai publication hei 11-208223 communique, No. 3504632 communique of Japanese Patent etc. as the example of the 2nd tire sipe.
Embodiment
Below, embodiment of concrete expression structure of the present invention and effect etc. is described.In addition, each performance evaluation of tire is carried out as following.
(1) ice and snow road deceleration and stopping performance
In real vehicle (Japan produces the FR car of 3000cc level), it is travelled under the load-carrying condition that 1 people takes on freezing road surface mounting of tyre, and its brake activation power is made ABS work, with the stopping distance of index assessment with this moment with the speed of 40km/h.In addition, evaluation is to be that 100 o'clock index shows and represents that numerical value is big more with product (comparative example 1) in the past, and ecbatic is good more.
(2) ice and snow road turning performance
With mounting of tyre in above-mentioned (1) identical real vehicle, it is travelled on identical road surface with lemniscate curve (circle of eight shape curve: R=25m) under the load-carrying condition that 1 people takes, with index assessment its travel one the circle time spent.In addition, evaluation is to be that 100 o'clock index shows and represents that numerical value is big more with product (comparative example 1) in the past, and ecbatic is good more.
(3) dry pavement deceleration and stopping performance
With mounting of tyre in above-mentioned (1) identical real vehicle, it is travelled on dry pavement under the load-carrying condition that 1 people takes, and its brake activation power is made ABS work, with the index assessment stopping distance of this moment with the speed of 100km/h.In addition, evaluation is to be that 100 o'clock index shows and represents that numerical value is big more with product (comparative example 1) in the past, and ecbatic is good more.
(4) dry pavement turning performance
With mounting of tyre in above-mentioned (1) identical real vehicle, it is travelled on dry pavement with lemniscate curve (circle of eight shape curve: R=25m) under the load-carrying condition that 1 people takes, carry out the feel test of road-holding property, and estimate with index.In addition, evaluation is to be that 100 o'clock index shows and represents that numerical value is big more with product (comparative example 1) in the past, and ecbatic is good more.
Comparative example 1 (product in the past)
For tread contour shown in Figure 1, form common wave-shaped sipes (structure that surperficial ditch shape is extended along depth direction with keeping intact) with following size, make the radial-ply tyre that specification is 205/65R15.Use this tire, will carry out the table 1 that the results are shown in of above-mentioned each performance evaluation.In addition, the degree of depth that makes tire sipe is 7mm, and the furrow width of tire sipe is 0.3mm, and the cycle is 4mm, and amplitude is 1.8mm, and tire sipe is spaced apart 4mm.
Comparative example 2
For tread contour shown in Figure 1, form tire sipe shown in Figure 2 in the zone that the inboard and the installation outside are installed, make the radial-ply tyre that specification is 205/65R15.Use this tire, will carry out the table 1 that the results are shown in of above-mentioned each performance evaluation.At this moment, the degree of depth that makes tire sipe is 7mm, and the furrow width of tire sipe is 0.3mm, cycle is 4mm, amplitude is 1.8mm, and tire sipe is spaced apart 4mm, and having formed the engagement section is that 3mm or 6mm, radius are 0.75mm, the degree of depth are the cylindrical-conical concavity engagement section of 1.00mm apart from the degree of depth on pattern block surface.
Comparative example 3
For tread contour shown in Figure 1, form tire sipe shown in Figure 5 in the zone that the inboard and the installation outside are installed, make the radial-ply tyre that specification is 205/65R15.Use this tire, will carry out the table 1 that the results are shown in of above-mentioned each performance evaluation.At this moment, the degree of depth that makes whole tire sipe is 6.9mm, and furrow width is 0.3mm, and tire sipe is spaced apart 4mm, the amplitude of section 1 up and down is 1.5mm, cycle is 4.0mm, is 2.3mm along the normal direction width, and the angle of inclination is 45 °, the amplitude of part 2 is 1.5mm, cycle is 4.0mm, is 2.3mm along the normal direction width, and the angle of inclination is 45 °.
For tread contour shown in Figure 1, form the 1st tire sipe shown in Figure 2 (size is identical with comparative example 2) in the installation area inside, form the 2nd tire sipe shown in Figure 5 (size is identical with comparative example 3) in the zone that the outside is installed, make the radial-ply tyre that specification is 205/65R15.Use this tire, will carry out the table 1 that the results are shown in of above-mentioned each performance evaluation.
For embodiment 1, substitute the 1st tire sipe shown in Figure 2, except radius is formed on the top in wave-shaped sipes is that 0.75mm, the degree of depth are the cylindrical-conical convex engagement section of 1.00mm, be identically formed the 1st tire sipe with embodiment 1, make the radial-ply tyre that specification is 205/65R15.Use this tire, will carry out the table 1 that the results are shown in of above-mentioned each performance evaluation.
Embodiment 3
For embodiment 1, substitute the 1st tire sipe shown in Figure 2, except being that 0.75mm, the degree of depth are the cylindrical-conical concavity engagement section of 1.00mm forming radius on the straight line tire sipe, be identically formed the 1st tire sipe with embodiment 1, make the radial-ply tyre that specification is 205/65R15.Use this tire, will carry out the table 1 that the results are shown in of above-mentioned each performance evaluation.
For embodiment 1,, make radial-ply tyre in the same manner with embodiment 1 except forming the 2nd tire sipe in the installation area inside and forming the 1st tire sipe in the zone that the outside is installed.Use this tire, will carry out the table 1 that the results are shown in of above-mentioned each performance evaluation.
Table 1
| Comparative example 1 | Comparative example 2 | Comparative example 3 | |
|
Embodiment 3 | Comparative example 4 | |
| The ice and snow road deceleration and stopping performance | 100 | 110 | 105 | 110 | 110 | 110 | 105 |
| The ice and snow road turning performance | 100 | 105 | 110 | 110 | 110 | 108 | 105 |
| The dry pavement deceleration and stopping performance | 100 | 105 | 104 | 105 | 105 | 103 | 104 |
| The dry pavement turning performance | 100 | 102 | 104 | 104 | 104 | 103 | 102 |
Shown in the result of table 1, embodiment 1～3 can make ice and snow road turning performance and ice and snow road deceleration and stopping performance and deposit, even also can make turning performance and deceleration and stopping performance and deposit for the dry pavement performance.On the contrary, inboardly be formed with in the comparative example 2～3 of identical three-dimensional tire sipe installing with the outside, the effect of improving in ice and snow road turning performance or the ice and snow road deceleration and stopping performance each a little less than, also be same result for the dry pavement performance.In addition, in the comparative example 4 that will be arranged at the tire sipe exchange that inboard and the outside are installed, improve ice and snow road turning performance or ice and snow road deceleration and stopping performance the two effect a little less than, also be same result for the dry pavement performance.
Claims (3)
1. air-inflation tyre, this air-inflation tyre has tread contour, and this tread contour has the grounding parts that is formed with a plurality of tire sipes, it is characterized in that,
Installation area inside at the tire equator line is provided with the 1st tire sipe (except being equivalent to the tire sipe of the 2nd tire sipe), the 1st tire sipe with the cross section of tire equator line parallel on be provided with the engagement section of concavity or convex;
And, zone outside the installation of tire equator line is provided with the 2nd tire sipe, the 2nd tire sipe have concavo-convex row along tire width direction or with respect to the internal face that tire width direction bevelled direction is extended, these concavo-convex row have along tire sipe and form direction bevelled part.
2. air-inflation tyre according to claim 1, wherein,
This air-inflation tyre is provided with the 2nd tire sipe, and the concavo-convex row of the above-mentioned internal face of the 2nd tire sipe have towards the part of the part of the lopsidedness of the tire sipe formation direction lopsidedness opposite with this part with court.
3. air-inflation tyre according to claim 1, wherein,
The engagement section that above-mentioned the 1st tire sipe has above-mentioned concavity or convex at the top of wavy tire sipe fore-and-aft direction both sides.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006318529 | 2006-11-27 | ||
| JP2006318529A JP4316603B2 (en) | 2006-11-27 | 2006-11-27 | Pneumatic tire |
| JP2006-318529 | 2006-11-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101190644A true CN101190644A (en) | 2008-06-04 |
| CN101190644B CN101190644B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101948660A Active CN101190644B (en) | 2006-11-27 | 2007-11-27 | Pneumatic tire |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4316603B2 (en) |
| CN (1) | CN101190644B (en) |
| WO (1) | WO2008065947A1 (en) |
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2007
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- 2007-11-27 CN CN2007101948660A patent/CN101190644B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101190644B (en) | 2012-05-23 |
| WO2008065947A1 (en) | 2008-06-05 |
| JP4316603B2 (en) | 2009-08-19 |
| JP2008132809A (en) | 2008-06-12 |
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