To provide a test method for a pneumatic tire that can estimate the deformation of the belt layer under simulated actual use conditions.SOLUTION: In a test method for a pneumatic tire 100 including an inner liner 113 constituting the inner circumference of the tire, a belt layer 117 disposed on the outer diameter side thereof, and tread rubber 119 disposed on the outer diameter side thereof, the pneumatic tire 100 is incorporated into a rim 140 to form a tire rim assembly T, the inside of the rim is filled with gas at a predetermined pressure, and the tire-rim assembly T is made to roll. During rolling of the tire rim assembly T, the belt width area of the inner surface of the inner liner 113 corresponding to at least the area where the belt layer 117 is disposed in the tire width direction is measured in the ground angle range Z0 corresponding to at least the ground contact area in the tire circumferential direction. Based on the measured results, the deformation of the belt layer 117 at least in the ground angle range Z0 is estimated.SELECTED DRAWING: Figure 7
【課題】実使用条件を模擬した状態でのベルト層の変形を推定できる、空気入りタイヤの試験方法を提供する。【解決手段】タイヤ内周面を構成するインナライナ113とこの外径側に配置されたベルト層117とこの外径側に配置されたトレッドゴム119とを含む、空気入りタイヤ100、の試験方法であって、空気入りタイヤ100をリム140に組み込んでタイヤリム組立体Tを構成し、この内側に所定圧で気体を充填し、タイヤリム組立体Tを転動させる。タイヤリム組立体Tの転動時に、インナライナ113の内表面のうち、タイヤ幅方向においてベルト層117が配置された領域に少なくとも対応するベルト幅領域を、タイヤ周方向において接地領域に少なくとも対応する接地角度範囲Z0において、測定する。測定された結果に基づいて、少なくとも接地角度範囲Z0におけるベルト層117の変形を推定する。【選択図】図7
TEST METHOD AND TEST DEVICE FOR PNEUMATIC TIRE
空気入りタイヤの試験方法及び試験装置
2021-03-11
Patent
Elektronische Ressource
Japanisch
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