漏气保用轮胎

Tyre capable of being used when air leaks

Abstract

A double bead type run flat tire includes a pair of bead sections having annular beads, sidewall sections extending outwardly from the bead sections in a diametrical direction of the tire, reinforcing rubber layers disposed in the sidewall sections, and annular protrusion sections protruding outwardly from at least one bead section in the width direction of the tire including an annular bead. The second moment Iw of area in the width direction and the second moment Iz of area in the diametrical direction in a section of the bead along the tire meridian satisfies the relationship: 49 mm<4><=IW<=524 MM<4>, 7 mm<4><=IZ<=29 MM<4>, and 3.9<=Iw/Iz<=18.2. A protruding portion is formed at the inner side of the bead protruding by more than 0.5 mm from the inner peripheral side face in the annular protrusion section in the diametrical direction of the tire.
一种双胎圈型漏气保用轮胎包括一对具有环形胎圈的胎圈部;在轮胎的直径方向上自这些胎圈部向外延伸的胎侧部;布置在这些胎侧部内的补强橡胶层;以及环形突起部,其从至少一个胎圈部在轮胎的宽度方向上向外突出,并包括一环形胎圈。在沿着轮胎子午线的截面上,在宽度方向上的截面二次矩Iw以及在直径方向上的截面二次矩Iz满足以下关系:49mm4≤Iw≤524mm4,7mm4≤Iz≤29mm4以及3.9≤Iw/Iz≤18.2。一个突出部分被在轮胎的直径方向上形成在该环形突起部的该胎圈的内侧,该突出部分从该环形突起部的内周侧面突出多于0.5mm。

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-101856956-AOctober 13, 2010森泰达集团有限公司Aircraft tire bead structure
    CN-106457929-AFebruary 22, 2017株式会社普利司通轮胎