SE459854B - SNOEDAECK - Google Patents
SNOEDAECKInfo
- Publication number
- SE459854B SE459854B SE7901861A SE7901861A SE459854B SE 459854 B SE459854 B SE 459854B SE 7901861 A SE7901861 A SE 7901861A SE 7901861 A SE7901861 A SE 7901861A SE 459854 B SE459854 B SE 459854B
- Authority
- SE
- Sweden
- Prior art keywords
- tire
- slits
- slats
- tread
- slots
- Prior art date
Links
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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
-
- 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
- B60C11/124—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern inclined with regard to a plane normal to the tread surface
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Description
15 20 25 30 35 459 854 - Principen för lösningen enligt uppfinningen, består i att välja lutningen av slitsarna relativt normalen mot slit- banan och därigenom av själva lamellerna, dessa slitsar, som begränsas av så att en avrundning av lamellernas angrepps- kanter undvikes. 15 20 25 30 35 459 854 - The principle of the solution according to the invention, consists in choosing the inclination of the slits relative to the normal against the tread and thereby of the slats themselves, these slits, which are limited by so that a rounding of the attack edges of the slats is avoided.
Däcket enligt uppfinningen, som innefattar en slitbana, försedd med lameller, vilka bildas av varandra närliggande slitsar, som har en lutning relativt normalen mot slitbanans ytteryta, kännetecknas av att slitsarna lutar i riktningen av de tangentiella pâkänningarna, som av marken utövas på däcket, med en vinkel av högst 450 ande bredd. och har en från noll avvik- Det är fördelaktigt att ge slitsarna en lutning enligt upp- finningen, d.v.s. under beaktande av de tangentiella pàkän- ningarnas riktning och av de verkningar man önskar erhålla, d.v.s. adhesion i tvärriktningen vid kurvtagning och adhesion i längdriktningen vid bromsning och acceleration. Man kan sålunda behandla olika zoner eller vissa utskjutande element av slítbanan på olika sätt genom val av slitsarnas förlopp och lutning. Sålunda kan slítbanan enligt uppfinningen inne- fatta zoner eller utskjutande element, som behandlats enligt uppfinningen för att hos nâgra öka adhesionen i längdriktningen vid bromsning, hos övriga adhesionen i längdriktning vid acceleration och hos äter andra adhesionen i tvärriktningen.The tire according to the invention, which comprises a tread provided with slats, which are formed by adjacent slits, which have an inclination relative to the outer surface of the tread, is characterized in that the slits slope in the direction of the tangential stresses exerted by the ground on the tire, an angle not exceeding 450 mm. and has a deviation from zero It is advantageous to give the slits a slope according to the invention, i.e. taking into account the direction of the tangential stresses and the effects one wishes to obtain, i.e. transverse adhesion during cornering and longitudinal adhesion during braking and acceleration. It is thus possible to treat different zones or certain projecting elements of the tread in different ways by choosing the course and inclination of the slits. Thus, the tread according to the invention may comprise zones or protruding elements, which have been treated according to the invention in order to increase the longitudinal adhesion in some during braking, in others the longitudinal adhesion in acceleration and in others eat the transverse adhesion.
Uppfinningen och dess verkningssätt förklaras närmare i det följande med hänvisning till bifogade ritning.The invention and its mode of action are explained in more detail below with reference to the accompanying drawing.
Pig. 1 - 4 visar längdsektioner av ett utskjutande element försett med slitsar enligt uppfinningen och vid obelastat däck (i fig. 1), vid belastat däck (i fig. 2), vid inkört men obelastat däck (fig. 3) OCh Viå í-TIJCÖIÉ, belastat ÖäCk (fi-Q. 4)- Fig. 1 visar ett utskjutande element 10 hos en (icke visad) slitbana hos ett däck, som är försett med slitsar 11 enligt uppfinningen. Detta utskjutande element 10 begränsas av två 10 15 20 25 30 35 459 854 spår 9 med ett djup H. Dessa slitsar ligger nära varandra och avgränsar lameller 12. Slitsarna har en bredd e. Den ena väggen 13 hos slitsarna 11 bildar mellan sig och slit- banans vta 14 en angreppskant 15 och den andra väggen 13' bildar med ytan 14 en utgångskant 16 hos lamellerna 12.Pig. 1 - 4 show longitudinal sections of a projecting element provided with slits according to the invention and with unloaded tires (in Fig. 1), with loaded tires (in Fig. 2), with run-in but unloaded tires (Fig. 3) AND Viå í-TIJCÖIÉ , loaded ÖäCk (fi-Q. 4) - Fig. 1 shows a projecting element 10 of a tread (not shown) of a tire, which is provided with slots 11 according to the invention. This projecting element 10 is delimited by two grooves 9 with a depth H. These slots lie close to each other and delimit lamellae 12. The slots have a width e. One wall 13 of the slots 11 forms between them and slot the surface 14 of the web 14 has an engaging edge 15 and the second wall 13 'forms with the surface 14 an exit edge 16 of the slats 12.
Slitsarna bildar en spetsig vinkel a med normalen N till slitbanan. Lutningen a kan variera med högst 300. Djupet h, som är nära spârens 9 djup H, kan variera från en slits till nästa i ett förhållande av högst 1:0,5. I det visade exemp- let lutar slitsarna 11 utåt i rotationsriktningen F. Dessa slitsar 11 är verksamma vid acceleration. För bildande av slitsar, som är verksamma vid bromsning, ges slitsarna en lut- ning i den motsatta riktningen (motsatt pilen F). Slitsar, som är verksamma mot den centrifugala accelerationen, får ges en lutning i riktning mot däckets yttersida i förhållande till normalen mot slitbanan.The slits form an acute angle α with the normal N to the tread. The slope a can vary by a maximum of 300. The depth h, which is close to the depth H of the groove 9, can vary from one slot to the next in a ratio of at most 1: 0.5. In the example shown, the slits 11 are inclined outwards in the direction of rotation F. These slits 11 are active during acceleration. To form slits that are effective during braking, the slits are tilted in the opposite direction (opposite arrow F). Slits which are effective against the centrifugal acceleration may be inclined towards the outside of the tire relative to the normal to the tread.
När det nya däcket plattas till mot marken (fig. 2), deformeras lamellerna 12 i det utskjutande elementet 10 och slitsarna 11 tillslutas. Tack vare dessa slitsar ökar lutningen a till a' och endast utgângskanterna 16 stöder mot marken 17. Efter en viss körsträcka kan man då konstatera, att lamellernas 12 bärande ytor 14 ändrat sin lutning i förhållande till sina ursprungliga lägen (fíg. 1) för att på ett inte belastat däck (fig. 3) bilda lutande bärytor 14'. Genom sin förslitning (fig. 4) frilägger lamellens utgångskant 16 den nästföljande lamellens angreppskant 15 i periferiell riktning när det be- lastade däcket vilar på marken.When the new tire is flattened against the ground (Fig. 2), the slats 12 in the projecting element 10 are deformed and the slits 11 are closed. Thanks to these slits, the slope a to a 'increases and only the exit edges 16 support the ground 17. After a certain distance, it can then be stated that the supporting surfaces 14 of the slats 12 have changed their slope in relation to their original positions (Fig. 1) to on an unloaded tire (Fig. 3) form inclined bearing surfaces 14 '. Due to its wear (Fig. 4), the exit edge 16 of the lamella exposes the attack edge 15 of the next lamella in the circumferential direction when the loaded tire rests on the ground.
Genom lamellernas lutning och bredd enligt uppfinningen åstadkommas en reglerad förslitning av lamellernas bäryta under en viss inkörningsperiod, varefter friläggningen av angreppskanterna 15 upprätthâlles när den en gång åstadkom- mits. Uppfinningens effekt är sålunda praktiskt taget obero- ende av slitbanans nötningsgrad.Due to the inclination and width of the slats according to the invention, a controlled wear of the bearing surface of the slats is achieved during a certain running-in period, after which the exposure of the attack edges 15 is maintained once it has been achieved. The effect of the invention is thus practically independent of the degree of abrasion of the tread.
Ett lämpligt värde för lutningen a av slitsarna relativt normalen mot slitbaneytan vid obelastat däck är högst 450. 10 15 20 25 30 35 459 854 Man kan exempelvis genom nedanstående beräkning uppskatta variationerna av vinkeln, som bildar angreppskanten av lamel- lerna enligt uppfinningen, hos lameller avsedda att förbättra N adhesionen i körriktningen. fx I nedanstående formel är: - P slitsarnas delning, d.v.s. avståndet mellan ut- gångskanterna av närliggande lameller i en grupp lameller på ett obelastat däck, _ - d slitsarnas lutning i förhållande till normalen till ytterytan, - d' lutningen av slitsarná vid utböjningen av lamel- lerna, som âstadkommes av den genom belastningen förorsakade hoptryckningen av däcket, - e bredden av slitsarna mätt vinkelrätt mot de desam- ma begränsande väggarna, - E lamellernas tjocklek vid E = P cos a - e, - R däckets radie och ' - d avståndet mellan slitbanans yta och däckets arme- ring, varigenom minskningen av lamellernas delning P inom be- röringsytan till en längd P' beräknas enligt den kända rela- tionen: 3' _ R - a P Under dessa förutsättningar är P cos a - e _ R cos a' = P, - R _ a x P R R ~ d II E P Minskningen av angreppskantens vinkel Y på det slitna däcket enligt uppfinningen är lika med differensen mellan vinklarna (a - d') beräknad ur ovannämnda relationer, d.v.s. den (arc cos d - arc cos a'). skillna- I praktiken är det lämpligt att beräkna vinkeländringen genom förslitning av lamellernas angreppskanter enligt ovan- stående ekvation till mellan o och 2o°. 459 854 Ordet "slits" i hela den föregående beskrivningen och i de följande patentkraven avser att beteckna inte endast en slits som är rak i dess djup- och/eller längdriktning, utan även en 'slits med ett helt annat förlopp, t.ex. bâgformígt eller vågformigt etc.- sett i ett godtírckligt sektionsplanß; (Lex. i längdsektion, tvärsektion eller snezl sektion).A suitable value for the slope a of the slits relative to the tread surface with unloaded tires is at most 450. For example, by the calculation below one can estimate the variations of the angle which forms the attack edge of the slats according to the invention in slats. intended to improve the N adhesion in the direction of travel. eg In the formula below the following are: - P the division of the slots, i.e. the distance between the exit edges of adjacent slats in a group of slats on an unloaded deck, - the slope of the slits relative to the normal to the outer surface, of the tire, - e the width of the slits measured perpendicular to the same limiting walls, - E the thickness of the slats at E = P cos a - e, - R the radius of the tire and '- d the distance between the tread surface and the tire reinforcement, whereby the reduction of the pitch P of the slats within the contact surface to a length P 'is calculated according to the known relation: 3' _ R - a P Under these conditions P cos a - e _ R cos a '= P, - R _ ax PRR ~ d II EP The reduction of the angle Y of the attack edge on the worn tire according to the invention is equal to the difference between the angles (a - d ') calculated from the above-mentioned relations, i.e. den (arc cos d - arc cos a '). differences- In practice, it is appropriate to calculate the angular change by wear of the lamination attack edges according to the above equation to between o and 2o °. The word "slit" throughout the foregoing description and in the following claims is intended to denote not only a slit which is straight in its depth and / or longitudinal direction, but also a slit with a completely different course, e.g. arcuate or wavy, etc.- seen in an arbitrary sectional plane; (Lex. In longitudinal section, cross section or snezl section).
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7806394A FR2418719A1 (en) | 1978-03-03 | 1978-03-03 | TIRE FOR RIDING ON SNOW |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7901861L SE7901861L (en) | 1979-09-04 |
SE459854B true SE459854B (en) | 1989-08-14 |
Family
ID=9205407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7901861A SE459854B (en) | 1978-03-03 | 1979-03-01 | SNOEDAECK |
Country Status (16)
Country | Link |
---|---|
JP (1) | JPS54124405A (en) |
AT (1) | AT367690B (en) |
BE (1) | BE874496A (en) |
CA (1) | CA1098017A (en) |
CH (1) | CH628293A5 (en) |
DE (1) | DE2908219A1 (en) |
DK (1) | DK151092C (en) |
ES (1) | ES478246A1 (en) |
FI (1) | FI790714A (en) |
FR (1) | FR2418719A1 (en) |
GB (1) | GB2017597B (en) |
IT (1) | IT1119673B (en) |
LU (1) | LU80985A1 (en) |
NL (1) | NL180734C (en) |
NO (1) | NO790720L (en) |
SE (1) | SE459854B (en) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2461602A1 (en) * | 1979-07-24 | 1981-02-06 | Michelin & Cie | PNEUMATIC FOR ROLLING ON SNOW |
DE3146362A1 (en) * | 1981-02-23 | 1982-09-02 | The General Tire & Rubber Co., 44329 Akron, Ohio | TIRE WITH IMPROVED TREAD |
FR2544251B1 (en) * | 1983-04-12 | 1986-05-09 | Michelin & Cie | RELIEF ELEMENTS OF A TIRE TREAD COMPRISING WAVY OR BROKEN TRACK INCISIONS |
DE3324649A1 (en) * | 1983-07-08 | 1985-01-31 | Continental Gummi-Werke Ag, 3000 Hannover | VEHICLE TIRES |
JPS60240507A (en) * | 1984-05-15 | 1985-11-29 | Sumitomo Rubber Ind Ltd | Low noise multi-siping tire |
JPS6168907U (en) * | 1984-10-13 | 1986-05-12 | ||
JPH0741777B2 (en) * | 1986-04-14 | 1995-05-10 | オ−ツタイヤ株式会社 | Studless pneumatic tire |
GB2192842B (en) * | 1986-06-13 | 1991-01-30 | Bridgestone Corp | Pneumatic tire |
FR2643312B1 (en) * | 1989-02-22 | 1991-07-26 | Michelin & Cie | "HEAVYWEIGHT" TIRE TREAD, WITH CENTRAL RIBS WITH INCLINED INCISIONS |
DE4232308A1 (en) * | 1992-09-26 | 1994-03-31 | Continental Ag | Radial tyre with more uniform wear - has raised blocks sepd. by longitudinal and lateral grooves with block trailing edges longer than leading edges. |
DE4232306C2 (en) * | 1992-09-26 | 1995-09-21 | Continental Ag | Directional vehicle tire with transverse grooves |
FR2703002B1 (en) * | 1993-03-25 | 1995-06-02 | Michelin & Cie | Tread for radial tire having elements in relief provided with incisions. |
JP3312784B2 (en) * | 1993-07-28 | 2002-08-12 | 株式会社ブリヂストン | Pneumatic tire |
JP3366737B2 (en) * | 1994-06-29 | 2003-01-14 | 株式会社ブリヂストン | Pneumatic tire |
DE19650655C2 (en) * | 1996-12-06 | 2000-08-24 | Continental Ag | Vehicle tires with cuts in the tread |
US6412531B1 (en) * | 1999-07-15 | 2002-07-02 | Michelin Recherche Et Technique S.A. | Tire tread having groove walls with compound contours |
DE60209956T2 (en) * | 2001-05-14 | 2006-11-30 | Société de Technologie Michelin | Tread with inclination variable sipes containing ribs |
JP4777547B2 (en) * | 2001-06-29 | 2011-09-21 | 株式会社ブリヂストン | Pneumatic tire |
JP4223064B2 (en) | 2007-06-12 | 2009-02-12 | 横浜ゴム株式会社 | Pneumatic tire |
JP4397956B1 (en) * | 2008-07-02 | 2010-01-13 | 横浜ゴム株式会社 | Pneumatic tire |
JP4442709B2 (en) | 2008-09-12 | 2010-03-31 | 横浜ゴム株式会社 | Pneumatic tire |
FR2956354A1 (en) | 2010-02-12 | 2011-08-19 | Michelin Soc Tech | TIRE FOR TWO - WHEELED VEHICLES COMPRISING A BEARING BAND HAVING INCISIONS. |
FR2956355B1 (en) | 2010-02-12 | 2012-05-18 | Michelin Soc Tech | TIRE FOR TWO - WHEELED VEHICLES COMPRISING A BEARING BAND HAVING INCISIONS. |
FR2956356B1 (en) | 2010-02-12 | 2012-06-08 | Michelin Soc Tech | TIRE FOR TWO - WHEELED VEHICLES COMPRISING A BEARING BAND HAVING A CIRCONFERENTIALLY CONTINUOUS CUT. |
FR2956357B1 (en) | 2010-02-12 | 2012-05-18 | Michelin Soc Tech | TIRE FOR TWO - WHEELED VEHICLES COMPRISING A BEARING BAND HAVING INCISIONS. |
FR2964600B1 (en) * | 2010-09-09 | 2014-08-22 | Michelin Soc Tech | TIRE TREAD FOR TIRES |
JP5947532B2 (en) * | 2011-12-09 | 2016-07-06 | 株式会社ブリヂストン | Pneumatic tire |
DE102011056762A1 (en) * | 2011-12-21 | 2013-06-27 | Continental Reifen Deutschland Gmbh | Arrangement of pneumatic vehicle tires on a vehicle |
FR2998511B1 (en) | 2012-11-29 | 2014-12-26 | Michelin & Cie | TIRE TREAD FOR SNOW TIRES HAVING INCISIONS AND CAVITIES |
CN106470850B (en) | 2014-06-30 | 2019-04-02 | 米其林集团总公司 | Tire tread including the tread element with sloping front side |
FR3034356B1 (en) | 2015-04-01 | 2018-08-10 | Compagnie Generale Des Etablissements Michelin | PNEUMATIC COMPRISING A TREAD |
WO2018101933A1 (en) * | 2016-11-30 | 2018-06-07 | Compagnie Generale Des Etablissements Michelin | Improved tire treads having positively inclined sipes |
JP7085427B2 (en) * | 2018-07-10 | 2022-06-16 | Toyo Tire株式会社 | Pneumatic tires |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR759592A (en) * | 1932-11-08 | 1934-02-05 | Michelin & Cie | Tire improvement |
FR43383E (en) * | 1933-02-21 | 1934-05-11 | Michelin & Cie | Tire improvement |
US2240542A (en) * | 1934-09-29 | 1941-05-06 | Michelin & Cie | Tire |
FR819836A (en) * | 1936-06-29 | 1937-10-27 | Wheel tire, rubber | |
US2339558A (en) * | 1942-03-21 | 1944-01-18 | Firestone Tire & Rubber Co | Tire |
GB727207A (en) * | 1952-06-24 | 1955-03-30 | Goodrich Co B F | Improvements in or relating to a high speed tire |
US3817308A (en) * | 1966-10-14 | 1974-06-18 | Tokyo Yakuhin Kaihatsu K K | Method of preparing a water-soluble powder containing active components from mineral spring waters of spas and product produced thereby |
FR2461602A1 (en) * | 1979-07-24 | 1981-02-06 | Michelin & Cie | PNEUMATIC FOR ROLLING ON SNOW |
-
1978
- 1978-03-03 FR FR7806394A patent/FR2418719A1/en active Granted
-
1979
- 1979-02-27 BE BE193736A patent/BE874496A/en not_active IP Right Cessation
- 1979-02-28 DK DK085079A patent/DK151092C/en not_active IP Right Cessation
- 1979-03-01 SE SE7901861A patent/SE459854B/en not_active IP Right Cessation
- 1979-03-02 DE DE19792908219 patent/DE2908219A1/en active Granted
- 1979-03-02 FI FI790714A patent/FI790714A/en not_active Application Discontinuation
- 1979-03-02 ES ES478246A patent/ES478246A1/en not_active Expired
- 1979-03-02 CA CA322,690A patent/CA1098017A/en not_active Expired
- 1979-03-02 GB GB7907476A patent/GB2017597B/en not_active Expired
- 1979-03-02 CH CH210279A patent/CH628293A5/en not_active IP Right Cessation
- 1979-03-02 NL NLAANVRAGE7901681,A patent/NL180734C/en not_active IP Right Cessation
- 1979-03-02 JP JP2436979A patent/JPS54124405A/en active Granted
- 1979-03-02 IT IT67456/79A patent/IT1119673B/en active
- 1979-03-02 LU LU80985A patent/LU80985A1/en unknown
- 1979-03-02 NO NO790720A patent/NO790720L/en unknown
- 1979-03-05 AT AT0165379A patent/AT367690B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DK85079A (en) | 1979-09-04 |
DE2908219C2 (en) | 1990-09-06 |
LU80985A1 (en) | 1979-06-18 |
FR2418719A1 (en) | 1979-09-28 |
IT1119673B (en) | 1986-03-10 |
GB2017597B (en) | 1982-08-04 |
ATA165379A (en) | 1981-12-15 |
GB2017597A (en) | 1979-10-10 |
ES478246A1 (en) | 1979-11-01 |
DE2908219A1 (en) | 1979-09-06 |
CA1098017A (en) | 1981-03-24 |
JPS54124405A (en) | 1979-09-27 |
DK151092C (en) | 1988-06-20 |
JPH0130641B2 (en) | 1989-06-21 |
NL180734B (en) | 1986-11-17 |
AT367690B (en) | 1982-07-26 |
NO790720L (en) | 1979-09-04 |
SE7901861L (en) | 1979-09-04 |
CH628293A5 (en) | 1982-02-26 |
FI790714A (en) | 1979-09-04 |
NL180734C (en) | 1987-04-16 |
DK151092B (en) | 1987-11-02 |
NL7901681A (en) | 1979-09-05 |
FR2418719B1 (en) | 1980-09-05 |
IT7967456A0 (en) | 1979-03-02 |
BE874496A (en) | 1979-06-18 |
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