EP3055142A1 - Tread comprising a directional tread pattern - Google Patents
Tread comprising a directional tread patternInfo
- Publication number
- EP3055142A1 EP3055142A1 EP14780870.3A EP14780870A EP3055142A1 EP 3055142 A1 EP3055142 A1 EP 3055142A1 EP 14780870 A EP14780870 A EP 14780870A EP 3055142 A1 EP3055142 A1 EP 3055142A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tread
- groove
- median plane
- block
- blocks
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000007599 discharging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
-
- 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
-
- 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
-
- 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
- B60C11/1369—Tie bars for linking block elements and bridging the groove
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0311—Patterns comprising tread lugs arranged parallel or oblique to the axis of rotation
- B60C2011/0313—Patterns comprising tread lugs arranged parallel or oblique to the axis of rotation directional type
-
- 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
-
- 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
- B60C2011/0374—Slant grooves, i.e. having an angle of about 5 to 35 degrees to the equatorial plane
-
- 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
- B60C2011/1209—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe straight at the tread surface
Definitions
- the present invention relates to a tread of a tire for a motor vehicle comprising a directional sculpture, more particularly, the invention relates to a tread having a plurality of curved grooves extending on either side of the tread. a median plane.
- US4057089 discloses a tread of a tire for a motor vehicle having a directional sculpture. More particularly, this tread comprises a plurality of curved grooves extending on either side of a median plane. The curved grooves start respectively from one of the edges of the tread and extend towards the median plane, without reaching this median plane.
- the sculpture thus comprises a central main block extending in a circumferential direction to which is attached a plurality of secondary blocks delimited by the curved grooves.
- the tread, disclosed in US4057089 has a number of disadvantages. In the first place, the presence of the central main block disturbs the flow of water and does not make optimal the evacuation of this water by the curved grooves. In addition, this tread has adhesion characteristics on limited snowy ground. [04] There is therefore a need to provide a directional sculpture tread with enhanced wet grip and snow grip characteristics. DEFINITIONS
- Thread of a tire means a quantity of rubber material delimited by lateral surfaces and by two main surfaces, one of which is intended to come into contact with a roadway when the tire is rolling.
- block on a tread means a raised element delimited by grooves and comprising side walls and a contact face, the latter being intended to come into contact with a roadway during driving.
- Midplane means a plane perpendicular to the axis of rotation of the tire and separating the tread into two parts.
- Median plane means an area of the tread centered on the median plane and having a width of not more than 10% of the width of the tread.
- Thread edge means the area where the transition between the tread and a sidewall of the tire occurs, when the tread is mounted on the tire.
- “Incision” means a cut in the tread delimiting material walls, the width of this cutout is appropriate to allow the at least partial contact of the material walls during the passage in the contact with floor.
- the width for an incision is at most equal to 2 millimeters (mm).
- groove means a cut in the tread delimiting material walls, the width of this cutout is such that the walls can not come into contact with each other under usual conditions rolling. The width for a groove is greater than 2 millimeters.
- Axial direction means a direction parallel to the axis of rotation of the tire.
- Circumferential direction means a direction that is tangent to any circle centered on the axis of rotation. This direction is perpendicular to the axial direction.
- oblique direction is meant a direction which has an axial component and a non-zero circumferential component.
- the invention relates to a tread for a tire comprising a plurality of blocks of rubber material formed on either side of a median plane separating said tread in two parts. Each block extends continuously at the median plane to the outside of the tread. Each block is delimited by a first groove opening on a first edge of the tread and having a certain curvature C and a second groove offset circumferentially with respect to the first groove and having the same curvature C. The block is delimited by a third groove extending from the first groove at the median plane of the tread to a second edge of the tread opposite the first edge, the second groove of the tread leading into the third groove.
- the invention it is thus possible to connect the different grooves together at the median plane.
- This connection of the grooves improves the evacuation of the water towards the outside of the tire during rolling.
- the blocks of the tread respectively have a generally oblique edge at the median plane. This edge, formed by the third groove, improves the grip on snowy ground and more particularly the transverse grip.
- the fact that the blocks are continuous from the median plane to the edges of the tread, that is to say that the blocks are not interrupted by grooves makes it possible to limit the disturbances in the evacuation of the tread. water out of the tread.
- the block has an enlargement at the median plane.
- each block comprises a plurality of incisions opening on the contact face forming plots, these plots being oblique and generally parallel to each other, the distance between two adjacent traces being between 3 mm and 8 mm.
- the tread comprises connecting means of rubber material connecting two adjacent blocks at the median plane.
- the connecting means are arranged near the junction areas of the grooves, these connecting means have a height h less than the height H of the blocks.
- the connecting means comprises an inclined surface.
- FIG. 1 shows schematically a partial view of a tread, according to a first embodiment of the invention
- Figure 2 schematically shows a second embodiment of the invention
- Figure 3 shows schematically a third embodiment of the invention
- Figure 4 schematically shows a fourth embodiment of the invention
- FIG. 5 represents a sectional view along the axis A-A of a connecting means of FIG. 4.
- Figure 1 shows schematically a partial view of a tread 1 according to a first embodiment of the invention.
- the tread 1 comprises a plurality of blocks 3 of rubber material, a block of which has been grayed out here to facilitate the understanding of the invention.
- the blocks are formed on either side of a median plane 5 separating the tread 1 into two parts.
- Each block 3 here extends continuously at the median plane 5 towards the outside of the tread, that is to say that the blocks are not divided by circumferential grooves and / or oblique in the direction of the tread. from the outside of the tread. More particularly, each block is delimited by a first groove 7, a second groove 9 and a third groove 11.
- the first groove 7 extends at the median plane 5 towards a first edge 8 of the tread and the second groove 9 also extends at the median plane 5 to the same first edge 8 but with a shift in the circumferential direction.
- the first groove 7 and the second groove 9 have the same curvature C.
- the third groove 11 extends, for its part, from the first groove 7 at the median plane 5 to a second edge 10 of the tread opposite the first edge 8.
- the second groove 9 opening into the third groove 11 at the median plane, it then forms an effective network for discharging the water out of the tread.
- Figure 2 shows an alternative embodiment in which each block 3 has a widening 13 at the median plane. This widening has a width L greater than at least 10% of the width of the block of Figure 1 at the median plane.
- the blocks 3 comprise incisions forming plots 17 on the contact faces 15 of the blocks. These lines 17 are here oblique and the distance D between two adjacent traces is between 3 mm and 8 mm.
- Figures 4 and 5 show a final variant in which the tread comprises connecting means 19 of rubber material connecting two adjacent blocks 3 at the median plane 5. These connecting means 19 are arranged near the zones junction grooves. These connecting means 19 have a height h less than the height H of the blocks 3 of out to limit disturbances in water volume exchanges between the grooves. In addition, the connecting means 19 comprise an inclined surface 21 to facilitate the evacuation of water out of the tread.
- the median plane 5 divides the tread 1 into two parts which have generally the same width. In a variant, the widths of these two parts are different.
- the curvature of the third groove 11 is identical, in absolute value, to the curvature of the first groove and the second groove.
- the values of the curvatures between, on the one hand, the first groove and the second groove and, on the other hand, the third groove are different.
- the block 3 has an enlargement at the median plane.
- the block may comprise a plurality of enlargements succeeding one another in steps at the level of the median plane.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1359675A FR3011512B1 (en) | 2013-10-07 | 2013-10-07 | TREAD BAND COMPRISING DIRECTIONAL SCULPTURE |
PCT/EP2014/071316 WO2015052122A1 (en) | 2013-10-07 | 2014-10-06 | Tread comprising a directional tread pattern |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3055142A1 true EP3055142A1 (en) | 2016-08-17 |
Family
ID=49998403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14780870.3A Withdrawn EP3055142A1 (en) | 2013-10-07 | 2014-10-06 | Tread comprising a directional tread pattern |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3055142A1 (en) |
JP (1) | JP2016531806A (en) |
CN (1) | CN105612064B (en) |
CA (1) | CA2923514A1 (en) |
FR (1) | FR3011512B1 (en) |
RU (1) | RU2667444C2 (en) |
WO (1) | WO2015052122A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015225417A1 (en) * | 2015-12-16 | 2017-06-22 | Continental Reifen Deutschland Gmbh | Vehicle tires |
DE102017203219A1 (en) | 2017-02-28 | 2018-08-30 | Continental Reifen Deutschland Gmbh | Vehicle tires |
JP6980446B2 (en) * | 2017-07-31 | 2021-12-15 | Toyo Tire株式会社 | Pneumatic tires |
JP7159968B2 (en) * | 2019-04-26 | 2022-10-25 | 横浜ゴム株式会社 | pneumatic tire |
CN110239285B (en) * | 2019-05-09 | 2021-05-25 | 正新橡胶(中国)有限公司 | Pneumatic tire |
JP7372550B2 (en) * | 2020-04-14 | 2023-11-01 | 横浜ゴム株式会社 | tire |
DE102021206704A1 (en) * | 2021-06-29 | 2022-12-29 | Continental Reifen Deutschland Gmbh | Vehicle Pneumatic Tires |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05319023A (en) * | 1992-05-14 | 1993-12-03 | Bridgestone Corp | Pneumatic tire |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2455130A1 (en) * | 1974-11-21 | 1976-05-26 | Continental Gummi Werke Ag | PNEUMATIC TIRES FOR MOTOR VEHICLES |
IT1248635B (en) * | 1990-01-10 | 1995-01-21 | Uniroyal Englebert Gmbh | RADIAL TIRE FOR VEHICLES, WITH EXTREMITY OF THE PROFILE ELEMENTS, IN THE BELTED AREA OF THE TREAD, DEVELOPED IN THE FORK SHAPE |
AT400425B (en) * | 1993-01-28 | 1995-12-27 | Semperit Ag | VEHICLE TIRES |
KR20050038130A (en) * | 2003-10-21 | 2005-04-27 | 한국타이어 주식회사 | Tread pattern design of ultra high performance tire |
EP1533140B1 (en) * | 2003-11-21 | 2006-07-26 | Continental Aktiengesellschaft | Tread pattern for a vehicle tyre |
JP2005153654A (en) * | 2003-11-25 | 2005-06-16 | Bridgestone Corp | Pneumatic tire |
CN203004982U (en) * | 2012-11-15 | 2013-06-19 | 厦门正新橡胶工业有限公司 | Tread pattern structure of cross-country tire |
-
2013
- 2013-10-07 FR FR1359675A patent/FR3011512B1/en active Active
-
2014
- 2014-10-06 EP EP14780870.3A patent/EP3055142A1/en not_active Withdrawn
- 2014-10-06 RU RU2016112513A patent/RU2667444C2/en active
- 2014-10-06 CN CN201480055070.5A patent/CN105612064B/en active Active
- 2014-10-06 CA CA2923514A patent/CA2923514A1/en not_active Abandoned
- 2014-10-06 JP JP2016546171A patent/JP2016531806A/en active Pending
- 2014-10-06 WO PCT/EP2014/071316 patent/WO2015052122A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05319023A (en) * | 1992-05-14 | 1993-12-03 | Bridgestone Corp | Pneumatic tire |
Also Published As
Publication number | Publication date |
---|---|
RU2667444C2 (en) | 2018-09-19 |
CA2923514A1 (en) | 2015-04-16 |
WO2015052122A1 (en) | 2015-04-16 |
CN105612064B (en) | 2018-05-04 |
FR3011512B1 (en) | 2017-02-24 |
FR3011512A1 (en) | 2015-04-10 |
CN105612064A (en) | 2016-05-25 |
JP2016531806A (en) | 2016-10-13 |
RU2016112513A (en) | 2017-11-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20160509 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN |
|
17Q | First examination report despatched |
Effective date: 20181206 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20190618 |