PNEUMATIC TIRE

• Main Author: HASHIMOTO YOSHIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 25.06.2020
• Subjects: DEVICES OR ARRANGEMENTS RELATED TO TYRES; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

To provide a pneumatic tire having a concave part near the maximum width position of a side wall part, which can suppress deterioration in rigidity of the side wall part of the tire.SOLUTION: A pneumatic tire 1 comprises: a pair of left and right bead parts 4 and 4 arranged in a tire width direction; a carcass ply 50 hung across the pair of left and right bead parts 4 and 4, folded back around the bead parts 4 and 4 to outside in the tire width direction and wound up outward in a tire radial direction, outside in the tire width direction; and a side wall rubber 30 covering the carcass ply 50 from outside in the tire width direction and constituting a side wall part 3, which has concave parts 31, 32 and 33 in a prescribed range W1 with the maximum width position W of the side wall part 3 as a center, where at least a portion of a part 51 wound up to outside in the tire radial direction of the carcass ply 50 is set at a position overlapping with the prescribed range W1 in which the concave parts 31, 32 and 33 of the side wall part 3 are formed.SELECTED DRAWING: Figure 3 【課題】サイドウォール部の最大幅位置付近に凹部を有する空気入りタイヤにおいて、タイヤのサイドウォール部の剛性の低下を抑制する。【解決手段】空気入りタイヤ１は、タイヤ幅方向に配置される左右一対のビード部４、４と、左右一対のビード部４、４に架け渡されるとともにビード部４、４の周りでタイヤ幅方向外側に折り返され、タイヤ幅方向外側でタイヤ径方向外方へ巻き上げられるカーカスプライ５０と、該カーカスプライ５０をタイヤ幅方向外側から覆うとともにサイドウォール部３を構成するサイドウォールゴム３０と、を備え、サイドウォール部３の最大幅位置Ｗを中心とした所定範囲Ｗ１内に、凹部３１、３２、３３を有し、カーカスプライ５０のタイヤ径方向外側へ巻き上げ部分５１の少なくとも一部が、サイドウォール部３の凹部３１、３２、３３が設けられた所定範囲Ｗ１とオーバラップする位置に設定される。【選択図】図３