To provide a heavy load tire 2 which can be reduced in weight and can achieve improvement of SFC resistance.SOLUTION: In a meridian cross section of a tire 2, a contour CL of a carcass 12 has: a curved portion 44 expanded outward; and a reverse curved portion 46 which is provided at radial inside of the curved portion 44 and dents inward. The reverse curved portion 46 is connected to the curved portion 44. A boundary between the curved portion 44 and the reverse curved portion 46 is a flexion point PV. A part or whole of the curved portion 44 is expressed by a first arc including the flexion point PV. A part or whole of the reverse curved portion 46 is expressed by a second arc including the flexion point. The first and second arcs come in contact with each other at the flexion point PV. A side surface 48 of the tire 2 has; a recessed portion 50 which hollows inward; an outside portion 52 which is located at radial outside of the recessed portion 50; and an inside portion 54 which is located at radial inside of the recessed portion 50. The recessed portion 50 is located at radial outside of the flexion point PV.SELECTED DRAWING: Figure 5

    【課題】本発明の目的は、軽量化を図りながら、耐SFC性能の向上を達成できる、重荷重用タイヤ2の提供。【解決手段】このタイヤ2の子午線断面において、カーカス12の輪郭CLは、外向きに膨らむ湾曲部44と、湾曲部44の径方向内側に位置し内向きに窪む逆湾曲部46とを備える。逆湾曲部46は湾曲部44に連なる。湾曲部44と逆湾曲部46との境界は変曲点PVである。湾曲部44の一部又は全部は、変曲点PVを含む第一の円弧で表される。逆湾曲部46の一部又は全部は、変曲点PVを含む第二の円弧で表される。第一の円弧と第二の円弧とは変曲点PVにおいて接する。タイヤ2の側面48は、内向きに窪む凹部50と、凹部50の径方向外側に位置する外側部52と、凹部50の径方向内側に位置する内側部54とを備える。凹部50は変曲点PVの径方向外側に位置する。【選択図】図5


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    HEAVY LOAD TIRE AND MANUFACTURING METHOD OF HEAVY LOAD TIRE


    Weitere Titelangaben:

    重荷重用タイヤ及び重荷重用タイヤの製造方法


    Beteiligte:
    KITANO TETSUYA (Autor:in)

    Erscheinungsdatum :

    2023-10-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



    HEAVY LOAD TIRE AND METHOD FOR MANUFACTURING HEAVY LOAD TIRE

    SATO AKIHITO | Europäisches Patentamt | 2020

    Freier Zugriff

    HEAVY LOAD TIRE AND MANUFACTURING METHOD OF HEAVY LOAD TIRE

    MAEHARA ATSUSHI | Europäisches Patentamt | 2018

    Freier Zugriff

    HEAVY-LOAD TIRE

    KOCHI NAOTO / ISHIZUKA KATSUYOSHI / SAKIYAMA TOMOTAKA | Europäisches Patentamt | 2024

    Freier Zugriff

    HEAVY-LOAD TIRE

    HASEGAWA TOMOO | Europäisches Patentamt | 2022

    Freier Zugriff

    Heavy load tire

    MORI YOSUKE | Europäisches Patentamt | 2017

    Freier Zugriff