WO2014126701A1 - Pneumatique présentant une construction de nappe carcasse asymétrique - Google Patents

Pneumatique présentant une construction de nappe carcasse asymétrique Download PDF

Info

Publication number
WO2014126701A1
WO2014126701A1 PCT/US2014/013200 US2014013200W WO2014126701A1 WO 2014126701 A1 WO2014126701 A1 WO 2014126701A1 US 2014013200 W US2014013200 W US 2014013200W WO 2014126701 A1 WO2014126701 A1 WO 2014126701A1
Authority
WO
WIPO (PCT)
Prior art keywords
body ply
height
tire
bead portion
extends
Prior art date
Application number
PCT/US2014/013200
Other languages
English (en)
Inventor
Jacob Walters
David Johnson
Kent WEATHERWAX
Kathleen CLEMMER
Jon Stuckey
Atsuo Suzuki
Michael Clark
Adam Nesbitt
James Donahue
Original Assignee
Bridgestone Americas Tire Operations, Llc
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
Application filed by Bridgestone Americas Tire Operations, Llc filed Critical Bridgestone Americas Tire Operations, Llc
Publication of WO2014126701A1 publication Critical patent/WO2014126701A1/fr

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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/02—Carcasses
    • B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
    • 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
    • B60C3/00—Tyres characterised by the transverse section
    • B60C3/04—Tyres characterised by the transverse section characterised by the relative dimensions of the section, e.g. low profile
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
    • B60C2015/009—Height of the carcass terminal portion defined in terms of a numerical value or ratio in proportion to section height
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • B60C2015/0696—Asymmetric bead reinforcement, e.g. arrangement of bead reinforcing layer or apex

Definitions

  • the body ply In the construction of a tire, one of the many key elements is the body ply.
  • the body ply which typically comprises reinforcement cord and rubber skim, wraps around the bead wire bundle (creating a "turnup” portion), passes radially across the tire, and wraps around the bead bundle on the opposite side (creating another "turnup” portion).
  • the body ply provides strength to contain the air pressure within the tire and provides for sidewall impact resistance.
  • a first carcass ply may have a first turnup height
  • a second carcass ply may have a second turnup height.
  • Each carcass ply typically has a similar height in its turnup portions on each side of the tire because the turnup height plays a direct role in the amount of reinforcement a carcass ply provides to a tire.
  • a mismatch of turnup height in a carcass ply may result in one side of the tire being stiff er than the other side of the tire, thus leading to undesirable aligning torque in the tire.
  • the carcass plies typically comprise different widths (e.g., the carcass ply implementing the higher turnup heights will be wider than the carcass ply with the lower turnup heights).
  • the actual building of such a tire having a plurality of carcass plies may be inefficient and overly complicated.
  • What is needed is a tire comprising a plurality of asymmetric carcass plies of substantially the same width, which maintain similar reinforcement and stiffness on each side of the tire, while eliminating the need for carcass plies of varying widths in the building of the tire.
  • a pneumatic tire comprising: a first bead portion oriented on a first side of the tire; a second bead portion oriented on a second side of the tire; a first body ply; and a second body ply; wherein the first body ply extends about the first bead portion and has a first body ply first turnup portion that extends to a height HI; wherein the first body ply extends about the second bead portion and has a first body ply second turnup that extends to a height H2; wherein the second body ply extends about the first bead portion and has a second body ply first turnup that extends to a height H4; wherein the second body ply extends about the second bead portion and has a second body ply second turnup portion that extends to a height H3; wherein the height HI is greater than the height H2; and wherein the height H3
  • a pneumatic tire comprising: a first bead portion oriented on a first side of the tire; a second bead portion oriented on a second side of the tire; a first body ply; and a second body ply; wherein the first body ply extends about the first bead portion and has a first body ply first turnup portion that extends substantially to a height HI; wherein the first body ply extends about the second bead portion and has a first body ply second turnup that extends substantially to a height H2; wherein the second body ply extends about the first bead portion and has a second body ply first turnup that extends substantially to the height H2; wherein the second body ply extends about the second bead portion and has a second body ply second turnup portion that extends substantially to the height HI; and wherein the height HI is greater than the height H2.
  • a pneumatic tire comprising: a tire centerline CL; a first bead portion oriented on a first side of the tire; a second bead portion oriented on a second side of the tire; a first body ply; and a second body ply; wherein the first body ply comprises a width Wl and the second body ply comprises a width W2, and wherein the width Wl is substantially equal to the width W2; wherein the first body ply comprises a centerpoint CI and the second body ply comprises a centerpoint C2; wherein the first body ply extends about the first bead portion, passes radially through the tire, and extends about the second bead portion; wherein the second body ply extends about the first bead portion, passes radially through the tire, and extends about the second bead portion; wherein the first body ply centerpoint CI is offset toward the first side of the tire from the tire centerline CL; a first bead portion oriented on
  • Figure 1 illustrates a cross-sectional view of an example arrangement of a tire having an asymmetric body ply construction.
  • Figure 2 illustrates a cross-sectional view of an example arrangement of a prior art tire construction.
  • Figure 1 illustrates a cross-sectional view of an example arrangement of a tire 100 having an asymmetric body ply construction.
  • Tire 100 may comprise a first sidewall 105, a second sidewall 107, a tread portion 110, a first side 115, and a second side 120.
  • Tire 100 may additionally comprise a first bead portion 125 and a second bead portion 130.
  • Tire 100 may comprise a pneumatic tire.
  • tire 100 is a pneumatic tire designed for application to a vehicle.
  • tire 100 is a pneumatic tire designed for application to a road vehicle.
  • tire 100 is a non-directional tire, wherein tire 100 is configured to be mounted on a vehicle without a specified forward rolling direction.
  • tire 100 is a uni-directional tire, wherein tire 100 is configured to be mounted on a vehicle with a specified forward rolling direction.
  • tire 100 comprises a plurality of body plies.
  • tire 100 comprises a first body ply 135 and a second body ply 140.
  • First body ply 135 and second body ply 140 may comprise a reinforcement cord and rubber skim.
  • the reinforcement cord is a fiber reinforcement cord.
  • the reinforcement cord can be any of a variety of materials, including for example, polyester, rayon, nylon, aramid, and polyethylene naphthalate (PEN).
  • the rubber skim is any of a variety of rubber materials, having any of a variety of common formulations, densities, and other properties for use in tires.
  • First body ply 135 may extend about first bead portion 125, along sidewall 105 in first side 115, across tread portion 110, along sidewall 107 in second side 120, and about second bead portion 130.
  • First body ply 135 may comprise a first body ply first turnup portion 145 defined by the portion of first body ply 135 extending about first bead portion 125.
  • First body ply 135 may also comprise a first body ply second turnup portion 150 defined by the portion of first body ply 135 extending about second bead portion 130.
  • Second body ply 140 may extend about second bead portion 130 along sidewall 107 in second side 120, across tread portion 110, along sidewall 105 in first side 115, and about first bead portion 125. Second body ply 140 may comprise a second body ply first turnup portion 155 defined by the portion of second body ply 140 extending about first bead portion 125. Second body ply 140 may also comprise a second body ply second turnup portion 160 defined by the portion of second body ply 140 extending about second bead portion 130.
  • Tire 100 may comprise a first side heel point 165 extending circumferentially about first side 115 of tire 100.
  • Tire 100 may comprise a second side heel point 170 extending circumferentially about second side 120 of tire 100.
  • a reference line RL extending between first heel point 165 and second heel point 170 may be used as a reference for radial measurements in tire 100.
  • Reference line RL may be oriented radially inwardly of first bead portion 125 and second bead portion 130. Radial measurements in tire 100 extending radially outward of reference line RL shall have a positive number, while radial measurements radially inward of reference line RL shall have a negative number.
  • tire 100 comprises a total section height SH, which as used herein is the distance between reference line RL of tire 100 and the radially outermost portion of tire 100 when tire 100 is mounted and inflated to specification, without application of a load.
  • first body ply first turnup portion 145 extends substantially to a height HI, which is expressed as a percentage of total section height SH.
  • HI is between about 5 % and about 90 % of total section height SH of tire 100.
  • height HI is between about 20 % and about 75 % of total section height SH of tire 100.
  • height HI is between about 35 % and 60 % of total section height SH of tire 100.
  • first body ply second turnup portion 150 extends substantially to a height H2, which is expressed as a percentage of total section height SH.
  • height H2 is between about 5 % and about 90 % of total section height SH of tire 100.
  • height H2 is between about 10 % and about 75 % of total section height SH of tire 100.
  • height H2 is between about 15 % and about 60 % of total section height SH of tire 100.
  • second body ply first turnup portion 155 extends substantially to a height H4, which is expressed as a percentage of total section height SH.
  • height H4 is between about 5 % and about 90 % of total section height SH of tire 100.
  • height H4 is between about 10 % and about 75 % of total section height SH of tire 100.
  • height H4 is between about 15 % and about 60 % of total section height SH of tire 100.
  • second body ply second turnup portion 160 extends substantially to a height H3, which is expressed as a percentage of total section height SH.
  • height H3 is between about 5 % and about 90 % of total section height SH of tire 100.
  • height H3 is between about 20 % and about 75 % of total section height SH of tire 100.
  • height H3 is between about 35 % and about 60 % of total section height SH of tire 100.
  • height HI is greater than height H2 and height H3 is greater than height H4. In one embodiment, height HI is between about 0 % and about 85 % greater than height H2. In another embodiment, height HI is between about 15 % and about 70 % greater than height H2. In another embodiment, height HI is between about 30 % and about 55 % greater than height H2. In one embodiment, height H3 is between about 0 % and about 85 % greater than height H4. In another embodiment, height H3 is between about 15 % and about 70 % greater than height H4. In another embodiment, height H3 is between about 30 % and about 55 % greater than height H4.
  • height HI is substantially equal to height H3.
  • height H2 is substantially equal to height H4.
  • first body ply first turnup portion 145 and second body ply second turnup portion 160 each extend substantially to a height HI.
  • first body ply second turnup portion 150 and second body ply first turnup portion 155 each extend substantially to a height H2.
  • tire 100 comprises a first rim line 175 and a second rim line 180, wherein a reference line (not shown) extending between first rim line 175 and second rim line 180 may be used as a reference for radial measurements in tire 100. Such measurements include heights HI, H2, H3, and H4.
  • first body ply 135 comprises a substantially flat sheet material prior to its application to a tire building machine and comprises a width Wl (not shown).
  • second body ply 140 comprises a substantially flat sheet material prior to its application to a tire building machine and comprises a width W2 (not shown).
  • width Wl and width W2 are substantially equal.
  • width Wl and width W2 are the same.
  • first body ply 135 and second body ply 140 are cut from the same roll of body ply material.
  • tire 100 comprises a centerline CL oriented at the laterally central point within tire 100.
  • Centerline CL may correspond with the centerline of a rim.
  • first body ply 135 comprises a centerpoint CI, representing half of its width Wl.
  • second body ply 140 comprises a centerpoint C2, representing half of its width W2.
  • tire 100 comprises a total section width SW, which as used herein is the distance between the laterally outermost point of sidewall 105 and the laterally outermost point of sidewall 107 (each in reference to centerline CL), when tire 100 is mounted and inflated to specification, without application of a load.
  • first body ply 135 extends about first bead portion 125, passes radially through tire 100, and extends about second bead portion 130.
  • Second body ply 140 extends about first bead portion 125, passes radially through tire 100, and extends about second bead portion 130.
  • centerpoint CI of first body ply 135 is offset from centerline CL toward first side 115 of tire 100 by a distance Dl.
  • centerpoint C2 of second body ply 140 is offset from centerline CL toward second side 120 of tire 100 by a distance D2.
  • distance Dl is substantially equal to distance D2. In one embodiment, distance Dl and distance D2 are between about 0 in. and about (maximum height HI - minimum height H2) / 2 in. In one embodiment, distance Dl and distance D2 are not substantially equal.
  • distance Dl is between about 0 % and about 45 % of total section width SW of tire 100.
  • distance Dl is between about 1 % and about 40 % of total section width SW of tire 100.
  • distance Dl is between about 2 % and about 30 % of total section width SW of tire 100.
  • distance D2 is between about 0 % and about 45 % of total section width SW of tire 100. In another embodiment, distance D2 is between 1 % and about 40 % of total section width SW of tire 100. In another embodiment, distance D2 is between about 2 % and about 30 % of total section width SW of tire 100.
  • Figure 2 illustrates a cross-sectional view of an example arrangement of a tire 200 having a prior art construction.
  • Tire 200 may comprise a first sidewall 205, a second sidewall 207, a tread portion 210, a first side 215 and a second side 220.
  • Tire 200 may additionally comprise a first bead portion 225 and a second bead portion 230.
  • tire 200 comprises a plurality of body plies.
  • tire 200 comprises a first body ply 235 and a second body ply 240.
  • First body ply 235 may extend about first bead portion 225, along sidewall 205 in first side 215, across tread portion 210, along sidewall 207 in second side 220, and about second bead portion 230.
  • First body ply 235 may comprise a first body ply first turnup portion 245 defined by the portion of first body ply 235 extending about first bead portion 225.
  • First body ply 235 may also comprise a first body ply second turnup portion 250 defined by the portion of first body ply 235 extending about second bead portion 230.
  • Second body ply 240 may extend about second bead portion 230 along sidewall 207 in second side 220, across tread portion 210, along sidewall 205 in first side 215, and about first bead portion 225. Second body ply 240 may comprise a second body ply first turnup portion 255 defined by the portion of second body ply 240 extending about first bead portion 225. Second body ply 240 may also comprise a second body ply second turnup portion 260 defined by the portion of second body ply 240 extending about second bead portion 230.
  • first body ply first turnup portion 245 and first body ply second turnup portion 250 comprise substantially the same height, which height is greater than the height of second body ply first turnup portion 255 and second body ply second turnup portion 260 (which have substantially the same height).
  • first body ply 235 comprises a greater width than second body ply 240.
  • prior art tire 200 requires that two separate widths of body plies be prepared in the construction of tire 200.

Landscapes

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

Abstract

L'invention concerne plusieurs modes de réalisation d'un pneumatique présentant une construction de nappe carcasse asymétrique.
PCT/US2014/013200 2013-02-15 2014-01-27 Pneumatique présentant une construction de nappe carcasse asymétrique WO2014126701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201313767955A 2013-02-15 2013-02-15
US13/767,955 2013-02-15

Publications (1)

Publication Number Publication Date
WO2014126701A1 true WO2014126701A1 (fr) 2014-08-21

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ID=51354474

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/013200 WO2014126701A1 (fr) 2013-02-15 2014-01-27 Pneumatique présentant une construction de nappe carcasse asymétrique

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AR (1) AR094796A1 (fr)
WO (1) WO2014126701A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016060812A1 (fr) * 2014-10-16 2016-04-21 Bridgestone Americas Tire Operations, Llc Pneumatique présentant une construction de nappe carcasse asymétrique
CN109910507A (zh) * 2017-11-30 2019-06-21 东洋橡胶工业株式会社 充气轮胎
CN109968919A (zh) * 2017-12-19 2019-07-05 住友橡胶工业株式会社 不平地面用的摩托车用轮胎
US11198334B2 (en) * 2017-11-30 2021-12-14 Toyo Tire Corporation Pneumatic tire
EP3925794A1 (fr) * 2020-06-18 2021-12-22 Sumitomo Rubber Industries, Ltd. Pneumatique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070137758A1 (en) * 2005-12-15 2007-06-21 Rielly Kevin M Radial farm tire for high clearance sprayers
US20090020206A1 (en) * 2005-01-27 2009-01-22 The Goodyear Tire & Rubber Company Wrap-around toeguard for a pneumatic tire
US20100043936A1 (en) * 2008-08-19 2010-02-25 James Kenneth Niedermier Pneumatic tire with single non-continuous carcass ply
US20100230020A1 (en) * 2007-08-03 2010-09-16 Sumitomo Rubber Industries, Ltd. Pneumatic tire
US20130025761A1 (en) * 2010-04-15 2013-01-31 Bridgestone Corporation Pneumatic tire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090020206A1 (en) * 2005-01-27 2009-01-22 The Goodyear Tire & Rubber Company Wrap-around toeguard for a pneumatic tire
US20070137758A1 (en) * 2005-12-15 2007-06-21 Rielly Kevin M Radial farm tire for high clearance sprayers
US20100230020A1 (en) * 2007-08-03 2010-09-16 Sumitomo Rubber Industries, Ltd. Pneumatic tire
US20100043936A1 (en) * 2008-08-19 2010-02-25 James Kenneth Niedermier Pneumatic tire with single non-continuous carcass ply
US20130025761A1 (en) * 2010-04-15 2013-01-31 Bridgestone Corporation Pneumatic tire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016060812A1 (fr) * 2014-10-16 2016-04-21 Bridgestone Americas Tire Operations, Llc Pneumatique présentant une construction de nappe carcasse asymétrique
CN107074024A (zh) * 2014-10-16 2017-08-18 普利司通美国轮胎运营有限责任公司 具有非对称胎体帘布层结构的轮胎
EP3206888A4 (fr) * 2014-10-16 2018-04-11 Bridgestone Americas Tire Operations, LLC Pneumatique présentant une construction de nappe carcasse asymétrique
CN109910507A (zh) * 2017-11-30 2019-06-21 东洋橡胶工业株式会社 充气轮胎
US11198334B2 (en) * 2017-11-30 2021-12-14 Toyo Tire Corporation Pneumatic tire
US11207928B2 (en) 2017-11-30 2021-12-28 Toyo Tire Corporation Pneumatic tire
CN109968919A (zh) * 2017-12-19 2019-07-05 住友橡胶工业株式会社 不平地面用的摩托车用轮胎
EP3925794A1 (fr) * 2020-06-18 2021-12-22 Sumitomo Rubber Industries, Ltd. Pneumatique

Also Published As

Publication number Publication date
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