PNEUMATIC TIRE

• Main Author: TAKITA KOICHI
• Format: Patent
• Language: English; Japanese
• Published: 24.10.2019
• 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 allow protrusions arranged on a buttress portion of a pneumatic tire to improve external damage resistance while securing traction performance.SOLUTION: A pneumatic tire 1 comprises protrusions 21 disposed on a buttress portion 3. The protrusion 21 comprises: a side wall 22 protruding from a surface 3a of the buttress portion 3; and a top wall 23 disposed at a tip of the side wall 22. The side wall 22 comprises parts 22a, 22b opposed to each other in a tire circumference direction. The parts 22a, 22b are inclined in the tire circumference direction so that a protrusion height H, which is a distance from a surface 3a of the buttress part 3, is lowered gradually from the top wall 23 toward the surface 3a of the buttress portion 3. An inclined angle θ of the parts 22a, 22b with respect to the surface 3a of the buttress portion 3 is gradually reduced as approaching from the inner side to the outer side in the tire radial direction.SELECTED DRAWING: Figure 4A 【課題】空気入りタイヤのバットレス部に設けられた突起について、トラクション性能を確保しつつ、耐外傷性を向上する。【解決手段】空気入りタイヤ１は、バッドレス部３に設けられた突起２１を備える。前記突起２１は、バットレス部３の表面３ａから突出する側壁２２と、側壁２２の先端に設けられた頂壁２３とを備える。側壁２２は、タイヤ周方向に対向する部分２２ａ，２２ｂを備える。部分２２ａ，２２ｂは、頂壁２３からバッドレス部３の表面３ａに向かって、バッドレス部３の表面３ａからの距離である突起高さＨが徐々に低くなるようにタイヤ周方向に傾斜している。部分２２ａ，２２ｂのバッドレス部３の表面３ａに対するタイヤ周方向の傾斜角度θは、タイヤ径方向の内側から外側に向かって徐々に小さくなっている。【選択図】図４Ａ