Pneumatic tire

The present invention provides a pneumatic tire in which a steel cord ply consisting of ultrafine wires having a wire diameter of 0.15 mm or less is used as a reinforcing material, and the ply is disposed between bead cords without turning up the ply so as to turn up it on the upper side of the ply...

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Bibliographic Details
Main Authors SHIN KWAN-SOO, PARK BYEONGOL
Format Patent
LanguageChinese
English
Published 13.01.2023
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
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Summary:The present invention provides a pneumatic tire in which a steel cord ply consisting of ultrafine wires having a wire diameter of 0.15 mm or less is used as a reinforcing material, and the ply is disposed between bead cords without turning up the ply so as to turn up it on the upper side of the ply through an annular bead bundle, therefore, the sidewall stiffness is still maintained even if one steel cord fabric layer is used for replacing two conventional fiber cord fabric layers. Thereby, unlike a conventional turn-up method of turning up a ply on the upper side of an annular bead bundle, the ply passes through the bead bundle as shown in Table 3 to minimize the deformation energy of the bead portion and maximize rolling resistance. The tire according to the present invention is characterized by satisfying 1.2 lt; ah/Bh1lt; 4.5 and a correlation equation between the height Bh1 of the bead bundle position of the inner tube and the height Ah of the bead portion comprising the apex. 本发明提供一种充气轮胎，其中使用由丝直径为0.15mm
Bibliography:Application Number: CN202210680449