CA2525982A1 - Non-pneumatic tire - Google Patents

Non-pneumatic tire Download PDF

Info

Publication number
CA2525982A1
CA2525982A1 CA002525982A CA2525982A CA2525982A1 CA 2525982 A1 CA2525982 A1 CA 2525982A1 CA 002525982 A CA002525982 A CA 002525982A CA 2525982 A CA2525982 A CA 2525982A CA 2525982 A1 CA2525982 A1 CA 2525982A1
Authority
CA
Canada
Prior art keywords
profile
tire according
equal
radially
alpha
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.)
Granted
Application number
CA002525982A
Other languages
French (fr)
Other versions
CA2525982C (en
Inventor
Steven M. Cron
Jean-Pierre Pompier
Timothy B. Rhyne
Ronald Hobart Thompson
Kenneth W. Demino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Michelin Recherche et Technique SA Switzerland
Original Assignee
Michelin Recherche et Technique SA Switzerland
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US11/260,640 external-priority patent/US7418988B2/en
Application filed by Michelin Recherche et Technique SA Switzerland filed Critical Michelin Recherche et Technique SA Switzerland
Publication of CA2525982A1 publication Critical patent/CA2525982A1/en
Application granted granted Critical
Publication of CA2525982C publication Critical patent/CA2525982C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B60C7/00—Non-inflatable or solid tyres
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
    • 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
    • B60C7/00—Non-inflatable or solid tyres
    • B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
    • B60C7/14—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs
    • B60C7/16—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs of helical or flat coil form
    • B60C7/18—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs of helical or flat coil form disposed radially relative to wheel axis
    • 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
    • B60C7/00—Non-inflatable or solid tyres
    • B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
    • B60C7/14—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs
    • B60C7/16—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs of helical or flat coil form
    • B60C7/20—Non-inflatable or solid tyres characterised by means for increasing resiliency using springs of helical or flat coil form disposed circumferentially relative to wheel axis
    • 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
    • B60C7/00—Non-inflatable or solid tyres
    • B60C7/22—Non-inflatable or solid tyres having inlays other than for increasing resiliency, e.g. for armouring
    • 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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

A structurally supported tire includes an outer annular band, and a plurality of web spokes extending transversely across and radially inward from the annular band and anchored in a wheel or hub. The annular band may further comprise a shear layer, at least a first membrane adhered to the radially inward extent of the shear layer, and at least a second membrane adhered to the radially outward extent of the shear layer. A preferred web spoke has a cutaway section transverse to the annular band. The cutaway section has a profile formed by straight line segments joined by a blending radius. The profile of the cutaway comprises a height HC and a maximum depth D greater than five percent of the height N and less than thirty percent of the maximum width W. The profile has an angle alpha formed by a line tangent to the profile relative to the horizontal at least equal to ten degrees at the radially outermost and radially innermost extent of said profile. The minimum radius of curvature RR of the profile is at least equal to twenty percent of the height HC of the cutaway section.

Claims (23)

1. A structurally supported tire comprising an outer annular band, a plurality of web spokes extending transversely across and radially inward from the outer annular band, said spokes having a maximum width W and a radial height N, means for interconnecting the plurality of web spokes with a wheel and;

a plurality of said web spokes has a cutaway section transverse to said band and said cutaway section comprising a profile having;

a height HC, a maximum depth D greater than five percent of said radial height N
and less than thirty percent of said maximum width W and;

said profile having an angle alpha at the radially outermost and radially innermost extent of said profile formed by a tangent to said profile and the horizontal wherein said angle alpha is at least equal to ten degrees and;

a minimum radius of curvature RR of said profile at least equal to twenty percent of said radial height N.
2. The tire according to claim 1, wherein said cutaway section is offset radially a height h from the outer annular band and from said means for interconnecting the plurality of web spokes with a wheel, and said height h is less than ten percent of said height N.
3. The tire according to claim 2, wherein the maximum depth D is less than (1.88.cndot.N - 5.67.cndot.Q).
4. The tire according to claim 1, wherein said angle alpha is greater than ten degrees and less than or equal to tan-1 {[HC2 - 4.cndot.D2]
/[4.cndot.D.cndot.HC)}.
5. The tire according to claim 1, wherein said radius RR is greater than twenty percent of said radial height N and less than or equal to {[12.cndot.D sin(alpha) - HC.cndot.cos(alpha)] / [2sin(alpha) - 11)}.
6. The tire according to claim 1, wherein the annular band further comprises comprising a shear layer, at least a first membrane adhered to a radially inward extent of the shear layer and at least a second membrane adhered to a radially outward extent of the shear layer, wherein each of the membranes has a longitudinal tensile modulus greater than a shear modulus of the shear layer
7. The tire according to claim 1, further comprising a tread portion disposed on a radially outer extent of the annular band.
B. The tire according to claim 1, wherein said means for interconnecting the plurality of web spokes with a wheel comprises a mounting band mutually interconnecting the radially inner ends of the web spokes.
9. The tire according to claim 1, wherein the plurality of web spokes further comprises a radially outer band mutually interconnecting radially outer ends of the web spokes.
10. The tire according to claim 1, wherein each web spoke is oriented parallel to the axial direction.
11. The tire according to claim 1, wherein each web spoke is oriented oblique to the axial direction.
12. The tire according to claim 10, wherein mutually adjacent web spokes are oriented at opposite oblique angles to the axial direction.
13. The tire according to claim 1, wherein the web spokes have a curvature in the equatorial plane to facilitate bending when under compression in the radial direction.
14. The tire according to claim 1, wherein each web spoke has a thickness that is not more than about 5% of a radius of the tire.
15. The tire according to claim 1, wherein a ratio of the longitudinal tensile modulus of one of the membranes to the shear modulus of the shear layer is at least 100:1.
16. The tire according to claim 1, wherein a product of the shear modulus of elasticity of the shear layer times a radial thickness of the shear layer is approximately equal to a product of a tire ground contact pressure times a radial position of the outermost extent of the second membrane.
17. The tire according to claim 1, wherein each of the at least first and second membranes comprise layers of essentially inextensible cord reinforcements embedded in an elastomeric coating layer having a shear modulus of elasticity at least equal to the shear modulus of elasticity of the shear layer.
18. The tire according to claim 1, wherein said cutaway section is defined by a parabola having a tangent angle alpha at least equal to ten degrees at the radially outermost and radially innermost extent of said profile and said parabola passing through an axial location corresponding to said maximum depth D.
19. A method for determining the transverse profile of a web spoke comprising the steps of;

(a) specifying a width W and a height N of said web spoke, a radial offset h, and a transverse depth D of said profile, wherein said depth D is greater than five percent of said radial height N and less than thirty percent of said width W;
(b) determining a computed value of a tangent angle alpha defined by a tangent to said profile and the horizontal;
(c) comparing said computed value of the tangent angle alpha to a predetermined minimum value and setting alpha equal to the greater of said computed value or said minimum value;
(d) determining a computed value of a minimum radius of curvature RR of said transverse profile;
(e) comparing said computed value of said radius to a predetermined minimum value;
(f) setting said radius RR to the greater of said computed value if said computed value is greater than said minimum value; and (g) reducing the value of alpha and repeating steps (c) through (f) until said radius RR is greater than said minimum value.
20. The method according to claim 17, wherein said computed value of the angle alpha is equal to tan-1[HC2 - 4.cndot.D2] /[4-D.cndot.HC]}.
21. The method according to claim 17, wherein said minimum value of the RR
is equal to the twenty percent of the radial height N of said web spoke.
22. The method according to claim 17, wherein said radius RR is at least equal to the twenty percent of the radial height and less than or equal to {(2-D. sin(alpha) - HC.cndot.cos(alpha)] / [2-sin(alpha) -1]}.
23. The method according to claim 17, wherein said minimum value of the angle alpha is ten degrees.
CA2525982A 2005-10-27 2005-11-08 Non-pneumatic tire Active CA2525982C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/260,640 US7418988B2 (en) 1999-12-10 2005-10-27 Non-pneumatic tire
US11/260,640 2005-10-27

Publications (2)

Publication Number Publication Date
CA2525982A1 true CA2525982A1 (en) 2007-04-27
CA2525982C CA2525982C (en) 2011-07-26

Family

ID=37965169

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2525982A Active CA2525982C (en) 2005-10-27 2005-11-08 Non-pneumatic tire

Country Status (7)

Country Link
JP (1) JP4955258B2 (en)
KR (1) KR101076620B1 (en)
CN (1) CN1955018B (en)
BR (1) BRPI0600205A8 (en)
CA (1) CA2525982C (en)
MX (1) MXPA05012535A (en)
RU (1) RU2372209C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012160534A1 (en) 2011-05-24 2012-11-29 Pieter Johannes Labuschagne An airless tyre for vehicles

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2651523C (en) * 2006-09-20 2012-02-28 Michelin Recherche Et Technique S.A. Variable stiffness spoke for a non-pneumatic assembly
JP4964949B2 (en) * 2006-10-13 2012-07-04 ソシエテ ド テクノロジー ミシュラン Improved shear band
BRPI0813795A2 (en) * 2007-06-29 2015-09-15 Michelin Rech Tech shear band and wheel
FR2922159B1 (en) * 2007-10-15 2011-04-29 Michelin Soc Tech PNEUMATIC ROLLER WITH CARRIER STRUCTURE
JP5432837B2 (en) * 2010-06-28 2014-03-05 東洋ゴム工業株式会社 Non-pneumatic tire
KR101327927B1 (en) * 2011-12-29 2013-11-13 한국타이어 주식회사 Non-pneumatic tire
CN104602900A (en) * 2012-09-07 2015-05-06 卡特彼勒公司 Systems and methods for forming non-pneumatic tires
JP6027392B2 (en) * 2012-10-19 2016-11-16 株式会社ブリヂストン Non pneumatic tire
JP6159138B2 (en) 2013-05-07 2017-07-05 住友ゴム工業株式会社 Airless tire
JP6152036B2 (en) * 2013-10-21 2017-06-21 株式会社ブリヂストン Non pneumatic tire
RU2546360C1 (en) * 2014-03-03 2015-04-10 Святослав Михайлович Сергеев Vehicle wheel
JP6317633B2 (en) * 2014-06-20 2018-04-25 住友ゴム工業株式会社 Airless tire
JP6383294B2 (en) * 2015-01-13 2018-08-29 住友ゴム工業株式会社 Airless tire
FR3031931B1 (en) * 2015-01-22 2017-02-03 Michelin & Cie PNEUMATIC TYPE DEVICE FOR VEHICLE
JP6487779B2 (en) * 2015-06-01 2019-03-20 住友ゴム工業株式会社 Airless tire
JP6604141B2 (en) * 2015-10-23 2019-11-13 住友ゴム工業株式会社 Airless tire
US20170368879A1 (en) * 2016-06-28 2017-12-28 The Goodyear Tire & Rubber Company Non-pneumatic tire
JP6762857B2 (en) * 2016-11-21 2020-09-30 株式会社ブリヂストン Non-pneumatic tires
EP3558695B1 (en) * 2016-12-22 2021-02-03 Compagnie Générale des Etablissements Michelin Non-pneumatic wheel and method of mounting non-pneumatic tire
WO2018125197A1 (en) * 2016-12-30 2018-07-05 Compagnie Generale Des Etablissements Michelin Resilient composite structural support
US20200047555A1 (en) * 2017-04-27 2020-02-13 Bridgestone Americas Tire Operations, Llc Tire with spoke loops
JP6597738B2 (en) * 2017-08-29 2019-10-30 住友ゴム工業株式会社 Non-pneumatic tire
WO2019089009A1 (en) * 2017-10-31 2019-05-09 Compagnie Generale Des Etablissements Michelin Non-pneumatic tire carcass
JP7275281B2 (en) * 2018-12-28 2023-05-17 ブリヂストン アメリカズ タイヤ オペレーションズ、 エルエルシー Non-pneumatic tire with reinforced outer ring
WO2020139680A1 (en) * 2018-12-28 2020-07-02 Bridgestone Americas Tire Operations, Llc Web structure for non-pneumatic tire and method of making same
EP4200140A1 (en) 2020-08-18 2023-06-28 Bridgestone Americas Tire Operations, LLC Tire tread with a band layer
CN114654941A (en) * 2020-12-23 2022-06-24 费曼科技(青岛)有限公司 Inflation-free wheel and vehicle
CN113022230B (en) * 2021-04-28 2022-07-12 江苏大学 Non-pneumatic tire with bionic vibration-damping spoke plate
CN113183688B (en) * 2021-05-19 2022-07-22 江苏大学 Spoke plate type non-pneumatic tire with bionic vibration reduction function
EP4331867A1 (en) 2022-08-29 2024-03-06 Venturi Lab SA Deformable wheel with non-pneumatic load support for conditions on the moon and mars

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE639433A (en) * 1962-10-31
DE3105209A1 (en) * 1981-02-13 1982-09-09 Continental Gummi-Werke Ag, 3000 Hannover VEHICLE TIRES
US4456048A (en) * 1983-01-24 1984-06-26 Grumman Aerospace Corporation Dual-modulus band banded tire
JPH0215501U (en) * 1988-07-15 1990-01-31
US5201971A (en) * 1989-04-19 1993-04-13 Pipelli Armstrong Tire Corporation Pneumatic tires containing a composite belt
JPH03143703A (en) * 1989-10-27 1991-06-19 Sumitomo Rubber Ind Ltd Radial tire
IT1266132B1 (en) 1993-09-10 1996-12-20 Nordica Spa WHEEL STRUCTURE, PARTICULARLY FOR SKATES OR SKATEBOARDS
CN1185115C (en) * 1999-12-10 2005-01-19 米其林研究和技术股份有限公司 Structurally supported resilient tire
CA2458002C (en) * 2001-08-24 2010-08-17 Michelin Recherche Et Technique S.A. Non-pneumatic tire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012160534A1 (en) 2011-05-24 2012-11-29 Pieter Johannes Labuschagne An airless tyre for vehicles
CN104395102A (en) * 2011-05-24 2015-03-04 展望股份有限公司投资121有限公司 An airless tyre for vehicles
EP2855169A4 (en) * 2011-05-24 2016-03-16 Prospect Sa Invest 121 Ltd An airless tyre for vehicles
US10099508B2 (en) 2011-05-24 2018-10-16 Prospect Sa Investments 121 Limited Airless tyre for vehicles

Also Published As

Publication number Publication date
JP2007118913A (en) 2007-05-17
MXPA05012535A (en) 2007-04-26
KR101076620B1 (en) 2011-10-26
RU2372209C2 (en) 2009-11-10
RU2005136991A (en) 2007-06-10
CN1955018B (en) 2010-10-13
BRPI0600205A8 (en) 2017-12-12
BRPI0600205A (en) 2007-08-14
KR20070045876A (en) 2007-05-02
CA2525982C (en) 2011-07-26
CN1955018A (en) 2007-05-02
JP4955258B2 (en) 2012-06-20

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