To provide a tire deterioration diagnosing device that can diagnose a deterioration state of a tire regardless of a use state of the tire.SOLUTION: The tire deterioration diagnosing device comprises: memorizing means 12 that memorizes in advance, for every constituting member of the tire 20, correlation information indicating a relation between a deterioration index value representing a degree of deterioration of the constituting members of the tire 20 and a travel distance of a vehicle 100 since the use of the tire 20 is started, and limit deterioration index values, deterioration index values of the constituting members in a prescribed deteriorated state of the tire 20; acquiring means 11 that acquires respective deterioration index values of the constituting members of the tire 20 from the tire 20 mounted on the vehicle 100; calculating means 13 that calculates using the correlation information, for every constituting member of the tire 20, estimated travel distances corresponding to the deterioration index values acquired by the acquiring means 11 and limit travel distance corresponding to the limit deterioration index value; and determining means 14 that determines that the constituting member, in which a difference between the limit travel distance and the estimated travel distance is smallest, as a deterioration member that rate-limits a service life of the tire.SELECTED DRAWING: Figure 1

    【課題】タイヤの使用状況によらずタイヤの劣化状態を診断することができるタイヤ劣化診断装置を提供する。【解決手段】タイヤ20の構成部材の劣化の程度を表す劣化指標値とタイヤ20の使用開始からの車両100の走行距離との関係を示す相関情報、及びタイヤ20が所定の劣化状態になるときの構成部材の劣化指標値である限界劣化指標値を、タイヤ20の構成部材毎に予め記憶した記憶手段12と、車両100に取り付けられたタイヤ20から、タイヤ20の構成部材の夫々の劣化指標値を取得する取得手段11と、取得手段11により取得された劣化指標値に対応する推定走行距離と、限界劣化指標値に対応する限界走行距離とを、相関情報を用いてタイヤ20の構成部材毎に算出する算出手段13と、限界走行距離と推定走行距離との差が最も小さい構成部材をタイヤの寿命を律速する劣化部材であると判定する判定手段14とを備える。【選択図】図1


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    Title :

    TIRE DETERIORATION DIAGNOSING DEVICE AND TIRE DETERIORATION DIAGNOSING SYSTEM


    Additional title:

    タイヤ劣化診断装置、及びタイヤ劣化診断システム


    Contributors:

    Publication date :

    2019-05-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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