PNEUMATIC TIRE

• Main Authors: NAKANO ATSUHITO, HOSHIBA TAKASHI, NIIZAWA TATSURO
• Format: Patent
• Language: Chinese; English
• Published: 11.05.2021
• 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

This pneumatic tire is provided, on the surface of a side rubber provided on a sidewall portion thereof, with a two-dimensional code in which a dot pattern is formed with two types of light and shade elements formed to be distinguishable from each other by surface unevenness. The two-dimensional code is provided with a dot hole corresponding to the shade element of the light and shade elements. The side rubber is a diene-based rubber containing a butadiene rubber, and when a mixing amount of the butadiene rubber with respect to 100 parts by mass of the diene-based rubber contained in the side rubber is A and a mixing amount of carbon is B, the ratio A/B and the hole depth D [mm] from the opening of the dot hole to the hole bottom satisfy relation 1.1<=(A/B)/D<=6.0. 本发明的充气轮胎在设于侧壁部的胎侧橡胶的表面设有二维码，该二维码由形成为能通过表面的凹凸而相互识别的两种浓淡要素形成点图案。在二维码中与浓淡要素的浓要素对应地设有点状孔。胎侧橡胶为含有丁二烯橡胶的二烯系橡胶，将丁二烯橡胶相对于胎侧橡胶中所含的二烯系橡胶100质量份的混合量设为A，炭的混合量设为B，比A/B与从点状孔的开口到孔底的孔深度D[mm]满足1.1≤(A/B)/D≤6.0的关系。