• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a tread made of a rubber-like material for a tire intended for winter movements. The tread comprises a plurality of pavers (1), each pavement comprising a contact face adapted to contact the ground when the tire is rolling, the contact face having a plurality of lamellae (3) formed therein and a plurality of thin grooves (5) shallower than the slats. Each block (1) comprises at least one side face (4), this side face is covered by a covering material (7), the covering material (7) having a modulus of elasticity which is greater than the modulus of elasticity rubber-like material constituting the pavement (1).
    公开号:FR3014750A1
    申请号:FR1362808
    申请日:2013-12-17
    公开日:2015-06-19
    发明作者:Shuichi Kaneko
    申请人:Michelin Recherche et Technique SA Switzerland ；Compagnie Generale des Etablissements Michelin SCA；Michelin Recherche et Technique SA France；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION [1] The present invention relates to a tire suitable for icy or snow-covered roads, and more particularly a tire for icy or snow-covered roads, which comprises fine grooves formed in the surface of the screed.
    [0002] PRIOR ART [2] WO-03 089 257 discloses a tire which has fine grooves formed in the surface of the yoke to improve the braking and traction performance on icy roads in the first phases of wear and which prevents the snow will foul the fine grooves, thereby further enhancing the effect of improving braking performance and traction. The depth of the fine groove is between 0.1 and 0.8 mm, the width of the fine groove is between 0.1 and 0.8 mm and the spacing between these fine grooves is between 0.5 and 2.0 mm. [03] It is an object of the present invention to further improve, in the first phases of wear, brake, the braking performance and traction of a tire comprising fine grooves.
    [0003] DEFINITIONS - 2 - [04] "Tire" means any type of elastic tire, whether or not it is subjected to internal pressure. [05] "Snow tire" or "Winter tire" means a tire identified by the letters M + S or M.S or even M & S, marked on at least one sidewall of the tire. Said snow tire is characterized by a tread design and a rubber compound which is designed primarily to provide, in the mud and in the fresh or melting snow, improved behavior compared to that of a tire of the type. road designed to ride on a ground that is not snow-covered. [06] By "clevis" of a tire is meant a quantity of rubber material delimited by side surfaces and by two major surfaces, one of which is designed to contact the road surface when the tire moves. [7] "Pavé" means an element in relief limited by a few large grooves. Each pad comprises a plurality of side faces and a contact face which is capable of contacting the road as the tire rolls. [8] By "modulus of elasticity" of elastic material is meant the relation between the strain variation and the strain variation when said material is subjected to tensile or compressive forces. SUMMARY OF THE INVENTION [9] The invention relates to a tread made of a rubber-like material for a tire intended for winter travel. This tread comprises a plurality of blocks, each block comprising a contact face adapted to contact the ground when the tire is rolling, the contact face having a plurality of lamellae formed therein and a plurality of thin grooves shallower than the slats. Each block comprises at least one side face, this side face is covered by a cover material, the cover material having a modulus of elasticity which is greater than the modulus of elasticity of the rubber-like material constituting the block. [10] The roofing material increases the overall stiffness of the pavement, improving the action of fine grooves on snow and ice. As a result, the braking and traction performance of a tire is improved. [11] Alternatively, the fine grooves do not extend to the covering material. [12] This limits the creation of cracks in the roofing material. [13] In a variant, the fine grooves extend obliquely. [14] It is possible to improve the action of fine grooves on snow and ice especially during cornering braking. [15] In a preferred embodiment, the cover material comprises an elastomeric material whose dynamic shear modulus G * subjected to a maximum alternating stress of 0.7 MPa at a frequency of 10 Hz and at a temperature of -10 ° C, is greater than 200 MPa and preferably greater than 300 MPa. [16] By using a roofing material having such characteristics, we improve the ability of the paver to scrape snow and ice on the road. As a result, grip on snowy / icy roads is improved. Alternatively, the cover material comprises a set of fibers. [18] By using fibers, we improve the strength of the roofing material.
    [0004] BRIEF DESCRIPTION OF THE DRAWINGS [19] Other features and advantages of the invention will become apparent from the following description, given by way of non-limiting example and with reference to the accompanying drawings in which: FIG. 1 schematically shows a pavement of a tread according to the invention; Figure 2 is a sectional view along line A-A 'of Figure 1; - Figure 3 shows schematically a pavement of a tread according to a second embodiment of the invention; Figure 4 schematically shows a pavement of a tread according to a third embodiment of the invention. [20] In the following description, elements that are substantially identical or similar will be designated by like references. [21] Figure 1 shows a paving stone 1 of a tread. This pad 1 is made of a rubber-like material for a tire intended for winter movements. Block 1 comprises a contact face 2 designed to come into contact with the ground when the tire is rolling. This contact face 2 comprises a plurality of lamellae 3. This contact face 2 effectively comprises a plurality of fine grooves 5. [22] FIG. 2 is a sectional view along a line AA 'in FIG. 1 In this view, it can be observed that the depth Dg of the fine grooves 5 is less important than the depth Ds of the lamella 3. In fact, the width of the fine grooves is less than the width of the lamella 3. More precisely, the depth of the fine groove is between 0.1 and 0.8 mm, the width of the fine groove is between 0.1 and 0.8 mm and the spacing between these fine grooves is between 0, 5 and 3.0 mm. In a variant, the width of the fine grooves is equal to the width of the lamella 3. [23] The keypad 1 in FIGS. 1 and 2 comprises four lateral faces 4. These lateral faces 4 are covered by a covering material 7. The cover material has a modulus of elasticity which is greater than the modulus of elasticity of the rubber-like material constituting block 1. [24] More particularly, the cover material comprises an elastomeric material whose modulus in dynamic shear G * subjected to a maximum alternating stress of 0.7 MPa, at a frequency of 10 Hz and at a temperature of -10 ° C., is greater than 200 MPa and preferably greater than 300 MPa. In the present document, the terms "modulus of elasticity G" and "modulus of viscosity G" denote the dynamic properties well known to those skilled in the art.These properties are measured on a viscoanalyzer METRAVIB VA4000, on molded specimens. from green mixtures Test specimens such as those described in ASTM D 5992-96 (version published in September 2006, originally approved in 1996) are used in Figure X2.1 (circular embodiment). the test piece is 10 mm (so it has a circular section of 78.5 mm 2), the thickness of each of the rubber-like parts of the mixture is 2 mm, which gives a "diameter on thickness" ratio of 5 ( as opposed to ISO 2856, cited in ASTM X2.4, which recommends a d / e value of 2. The reaction of a specimen made of vulcanized vulcanized rubber-type mixture is recorded. at a sinusoidal shear stress alternatively, at a frequency of 10 Hz. The specimen is subjected to a sinusoidal shear stress at 10 Hz, with a controlled effort (0.7 MPa) applied symmetrically around its equilibrium position. The measurement is made during a temperature ramp increasing by 1.5 ° C per minute, from a temperature Tmin lower than the glass transition temperature (Tg) of the material, to a temperature Tmax which can correspond to the rubber bearing of the matter. Before starting the sweep, the specimen is stabilized at the Tmin temperature for 20 minutes to reach a uniform temperature inside the specimen.
    [0005] The results used are the dynamic shear modulus of elasticity (G ') and the shear viscosity modulus (G ") at the selected temperatures (in this case 0 °, 5 ° and 20 ° C). G * is defined as the absolute value of the complex sum of modulus of elasticity G 'and viscosity modulus G ": G * = (G'2 + G" 2). [25] Alternatively, the elastomeric material the cover layer comprises a mixture based on at least one diene elastomer which is very heavily loaded with sulfur, such as ebonite. [26] Alternatively, the cover material comprises a set of fibers, for example a The fibers of said felt may be selected from the group consisting of textile fibers, mineral fibers and a mixture thereof, It should also be noted that the fibers of said felt may be chosen from textile fibers of natural origin, example in the group of silk, cotton, bamboo, cellulose, wool fibers and mixtures thereof. [27] In another variant, the elastomeric material of the cover layer comprises a mixture based on at least one thermoplastic polymer, such as polyethylene terephthalate (PET). Such a polymer may have a Young's modulus of more than 1 GPa. [28] Figure 3 shows a block 1 of a tread according to a second embodiment of the invention. In this second embodiment, the fine grooves 5 do not extend to the covering material 7. [29] Figure 4 shows a pavement 1 of a tread according to a third embodiment of the invention. invention. In this third embodiment, the fine grooves 5 extend obliquely. Thus, the angle α between the thin groove and a circumferential direction X is less than 20 °. More particularly, this angle a is less than or equal to 10 °. [30] The invention is not limited to the examples described and shown and various modifications can be made without departing from its scope. [31] Figure 1 and Figure 2 show a pavement with side faces completely covered by the roofing material. In a variant, the side faces are covered in part by the covering material. [32] Figure 3 and Figure 4 show various embodiments in which the slats and the thin grooves are between them a certain angle. Between the lamellae and the fine grooves all angular combinations are possible.
    权利要求:
    Claims (5)
    [0001]
    REVENDICATIONS1. Tread made of a rubber-like material for a tire intended for winter movements, said tread comprising a plurality of blocks (1), each block comprising a contact face (2) designed to come into contact with the ground when the tire rolls, the contact face having a plurality of lamellae (3) formed therein and a plurality of fine grooves (5) shallower than the lamellae (3), characterized in that each block (1) comprises least one lateral face (4) and in that this lateral face is covered by a covering material (7), the covering material (7) having a modulus of elasticity which is greater than the modulus of elasticity of the material rubber constituting the pavement (1).
    [0002]
    2. A tread according to claim 1, characterized in that the fine grooves (5) do not extend to the covering material (7).
    [0003]
    3. Tread according to either of claims 1 and 2, characterized in that the thin grooves (5) extend obliquely.
    [0004]
    4. Tread according to any one of claims 1 to 3, characterized in that the covering material (7) comprises an elastomeric material whose modulus in dynamic shear G * subjected to a maximum alternating stress of 0.7 MPa, at a frequency of 10 Hz and at a temperature of -1000, is greater than 200 MPa and preferably greater than 300 MPa. 35
    [0005]
    5. A tread according to any one of claims 1 to 4, characterized in that the covering material (7) comprises a set of fibers.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2794301B1|2019-10-16|Tread band comprising oblique blocks
    FR3014750A1|2015-06-19|
    EP2938503B1|2017-01-11|Tread comprising sculpted elements comprising a covering layer
    CA2781134C|2016-11-08|Tire for a vehicle carrying heavy loads
    EP2794248B1|2016-04-13|Moulding element comprising cutting means for moulding and vulcanizing a tyre tread
    FR2984214A1|2013-06-21|MOLDING ELEMENT COMPRISING CUTTING MEANS FOR MOLDING AND VULCANIZING A TIRE TREAD OF A PNEUMATIC
    FR3015362A1|2015-06-26|TIRE TREAD FOR A VEHICLE FOR AGRICULTURAL USE
    FR3000424A1|2014-07-04|MOLD ELEMENT COMPRISING CUTTING MEANS FOR MOLDING AND VULCANIZING A TIRE TREAD OF A TIRE
    FR3014749A1|2015-06-19|
    FR3016830A1|2015-07-31|
    FR3020018A1|2015-10-23|TIRE TREAD FOR A VEHICLE FOR AGRICULTURAL USE
    FR3014748A1|2015-06-19|
    EP3452305B1|2021-01-06|Studded tyre
    FR3059942A3|2018-06-15|PNEUMATIC WITH A TREAD WITH REINFORCING ELEMENTS
    FR3059943A1|2018-06-15|PNEUMATIC WITH A TREAD WITH REINFORCING ELEMENTS
    FR3053002B1|2019-07-05|PNEUMATIC CLOUTE
    FR3020990A1|2015-11-20|TIRE TREAD FOR A VEHICLE FOR AGRICULTURAL USE
    FR3103737A1|2021-06-04|Tire whose tread includes a reinforcing structure
    FR3053001A1|2017-12-29|PNEUMATIC CLOUTE
    同族专利:
    公开号 | 公开日
    EP3083284B1|2019-09-04|
    JP2016540689A|2016-12-28|
    BR112016013414A2|2018-12-04|
    WO2015091331A1|2015-06-25|
    US20160311266A1|2016-10-27|
    EP3083284A1|2016-10-26|
    CN105829139A|2016-08-03|
    RU2016121141A|2018-01-23|
    FR3014750B1|2017-02-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS61263807A|1985-05-20|1986-11-21|Bridgestone Corp|Pneumatic tire for road under ice and snow|
    JPH08175116A|1994-12-27|1996-07-09|Bridgestone Corp|Pneumatic tire with improved on-ice performance|
    EP0921020A2|1997-12-04|1999-06-09|Continental Aktiengesellschaft|Winter tyre tread|
    JP2006076529A|2004-09-13|2006-03-23|Bridgestone Corp|Pneumatic tire and method of manufacturing the same|
    JP2008055974A|2006-08-29|2008-03-13|Toyo Tire & Rubber Co Ltd|Pneumatic tire|
    JP2010105509A|2008-10-29|2010-05-13|Yokohama Rubber Co Ltd:The|Pneumatic tire|
    WO2013087826A1|2011-12-16|2013-06-20|Compagnie Generale Des Etablissements Michelin|Moulding element comprising cutting means, for moulding and curing a tread of a tyre|
    WO2013092688A1|2011-12-22|2013-06-27|Compagnie Generale Des Etablissements Michelin|Tread comprising oblique blocks|WO2017092915A1|2015-12-04|2017-06-08|Continental Reifen Deutschland Gmbh|Pneumatic vehicle tire|
    EP3508356A4|2016-08-31|2020-03-25|The Yokohama Rubber Co., Ltd.|Pneumatic tire|JPH0115405B2|1983-12-09|1989-03-17|Yokohama Rubber Co Ltd|
    JPH02249707A|1989-03-22|1990-10-05|Bridgestone Corp|Pneumatic tire|
    JPH03208707A|1989-10-23|1991-09-11|Bridgestone Corp|Tread of pneumatic radial tire for heavy load|
    EP0821035B1|1996-02-09|2004-10-20|The Yokohama Rubber Co., Ltd.|Thermoplastic elastomer composition, process for the preparation thereof, hose made by using the composition, and process for the production thereof|
    DE60018813T2|1999-01-13|2006-03-30|Bridgestone Corp.|Tires with excellent steering stability|
    JP2001253209A|2000-03-13|2001-09-18|Yokohama Rubber Co Ltd:The|Tread material for tire|
    EP1172235B1|2000-07-06|2006-09-13|Sumitomo Rubber Industries Ltd.|Pneumatic tire|
    CN1270908C|2001-02-28|2006-08-23|倍耐力轮胎公司|Tyre tread for motor vehicles, particularly for snow-covered ground|
    JP4326338B2|2001-12-26|2009-09-02|株式会社ブリヂストン|Pneumatic radial tire|
    EP2014486A2|2002-07-05|2009-01-14|The Yokohama Rubber Co., Ltd.|Pneumatic tire for ice-bound or snow-covered road|
    JP4621068B2|2005-05-09|2011-01-26|住友ゴム工業株式会社|Heavy duty tire|
    CN101516649B|2006-09-22|2012-05-30|横滨橡胶株式会社|Pneumatic radial tire|
    US7908128B2|2006-12-26|2011-03-15|Sumitomo Rubber Industries, Ltd.|Method for modeling a tire model and simulation method|
    JP4378414B1|2008-05-28|2009-12-09|横浜ゴム株式会社|Pneumatic tire|
    JP5136281B2|2008-08-20|2013-02-06|横浜ゴム株式会社|Pneumatic tire|
    FR2956355B1|2010-02-12|2012-05-18|Michelin Soc Tech|TIRE FOR TWO - WHEELED VEHICLES COMPRISING A BEARING BAND HAVING INCISIONS.|
    US8720508B2|2011-03-17|2014-05-13|Michelin Recherche Et Technique S.A.|Tread having a gradient of properties for improving irregular wear|
    FR2984228B1|2011-12-16|2016-09-30|Soc De Tech Michelin|TREAD BAND HAVING SCULPTURE ELEMENTS COVERED WITH AN IMPREGNATED FIBER ASSEMBLY|
    FR2984227B1|2011-12-16|2015-04-03|Michelin Soc Tech|TREAD BAND HAVING SCULPTURE ELEMENTS COVERED WITH THERMOPLASTIC MATERIAL.|
    FR2984797B1|2011-12-22|2014-02-21|Michelin Soc Tech|MOLDING ELEMENT COMPRISING CUTTING MEANS FOR MOLDING AND VULCANIZING A TIRE TREAD OF A PNEUMATIC|
    KR20150052866A|2012-09-07|2015-05-14|꽁빠니 제네날 드 에따블리세망 미쉘린|Pneumatic tire tread and pneumatic tire with said tread|
    FR3000432B1|2012-12-28|2015-01-23|Michelin & Cie|TREAD BAND COMPRISING SCULPTURE ELEMENTS COMPRISING A RECOVERY LAYER|
    FR3000424B1|2012-12-28|2015-05-15|Michelin & Cie|MOLD ELEMENT COMPRISING CUTTING MEANS FOR MOLDING AND VULCANIZING A TIRE TREAD OF A TIRE|
    EP3094501A4|2014-01-16|2017-09-06|Bridgestone Americas Tire Operations, LLC|Tire with laminate and method of making same|DE102015207734A1|2015-04-28|2016-11-03|Continental Reifen Deutschland Gmbh|Vehicle tires|
    JP2021088308A|2019-12-05|2021-06-10|株式会社ブリヂストン|Pneumatic tire|
    法律状态:
    2015-12-21| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-22| PLFP| Fee payment|Year of fee payment: 4 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 5 |
    2018-12-19| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-16| ST| Notification of lapse|Effective date: 20200905 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1362808A|FR3014750B1|2013-12-17|2013-12-17|Tread comprising pavers and thin grooves on the paving stones|FR1362808A| FR3014750B1|2013-12-17|2013-12-17|Tread comprising pavers and thin grooves on the paving stones|
    CN201480069176.0A| CN105829139A|2013-12-17|2014-12-15|Tread band comprising blocks and fine grooves on the blocks|
    EP14812473.8A| EP3083284B1|2013-12-17|2014-12-15|Tread band comprising blocks and fine grooves on the blocks|
    JP2016540540A| JP2016540689A|2013-12-17|2014-12-15|Tread band with block and narrow groove on the block|
    BR112016013414A| BR112016013414A2|2013-12-17|2014-12-15|tread comprising blocks and fine grooves in the blocks|
    PCT/EP2014/077709| WO2015091331A1|2013-12-17|2014-12-15|Tread band comprising blocks and fine grooves on the blocks|
    US15/105,070| US20160311266A1|2013-12-17|2014-12-15|Tread band having blocks and fine grooves on the blocks|
    RU2016121141A| RU2016121141A|2013-12-17|2014-12-15|PROTECTOR BRACELET CONTAINING BLOCKS AND SMALL GROOVES ON BLOCKS|
    [返回顶部]