PROBLEM TO BE SOLVED: To provide a rotary body shaft for a wheel of a motor cycle which is reduced in costs and secures sufficient torsion strength, a rotary body structure for a wheel of a motor cycle, and a wheel for a motor cycle.SOLUTION: A rotary body shaft 3 is arranged at a rotation center of a rotary body main body 2 and transmits a torsion moment from the outside to the rotary body main body 2. Across the whole surface of an outer peripheral surface of the rotary body shaft 3 are formed a plurality of protrusions 5 made of the same materials as the materials of the rotary body shaft 3. The protrusion 5 is formed, from an outer periphery side toward an inner periphery side, of three parts: a dome shape tip part, a bundle shape intermediate part and an approximately conical shape base bottom part. Heights of the protrusions 5 are 0.45 mm or more and 1.70 mm or less. The number of the protrusions per one cmamounts to 15 or more and 55 or less, and ratios of the total sum per a unit area of cross sections surrounded by a contour line at a height position of 0.3 mm of the protrusions to a unit area of the outer peripheral surface are equal to 10% or more and 40% or less.SELECTED DRAWING: Figure 1

    【課題】 コストを低く抑えると共に、十分なねじり強度を確保した自動二輪車車輪用の回転体軸、自動二輪車用の回転体構造および自動二輪車用の車輪を提供する。【解決手段】回転体軸3は、回転体本体2の回転中心に設けられ、外部からのねじりモーメン卜を回転体本体2に伝達する。回転体軸3の外周面の全面にわたって、回転体軸3と同じ材料の突起5が複数設けられる。突起5の形状は外周側から内周側に向かつて3つの部分からなり、先端部分がドーム状であり、中間部分が括れ形状であり、基底部分が略円錐状であり、突起5の高さは0.45mm以上1.70mm以下であり、突起の1cm2当たりの個数は、15個以上55個以下であり、かつ、前記突起の0.3mmの高さ位置での等高線により囲まれた断面積の単位面積当たりの総和と外周面の単位面積との比が10%以上40%以下である。【選択図】 図1


    Access

    Download


    Export, share and cite



    Title :

    ROTARY BODY SHAFT FOR WHEEL OF MOTOR CYCLE, ROTARY BODY STRUCTURE FOR WHEEL OF MOTOR CYCLE, AND WHEEL FOR MOTOR CYCLE


    Additional title:

    自動二輪車車輪用の回転体軸および自動二輪車車輪用の回転体構造ならびに自動二輪車用の車輪


    Contributors:
    NOBE TAKAHIRO (author) / KAMATA KOJI (author) / TAKANO YUGO (author)

    Publication date :

    2017-04-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge



    WHEEL OF MOTOR CYCLE

    MATSUMURA NORIKAZU | European Patent Office | 2019

    Free access

    AUXILIARY WHEEL DEVICE FOR MOTOR CYCLE, AND MOTOR CYCLE

    HIRAYAMA KAZUO | European Patent Office | 2023

    Free access

    ROTARY MACHINE, ROTARY ELECTRIC MOTOR, AND IN-WHEEL MOTOR

    SUZUKI KENTARO | European Patent Office | 2017

    Free access

    REAR WHEEL SUSPENSION STRUCTURE OF MOTOR CYCLE

    EBINUMA TAKATOSHI / KOTO KENJI / FUJITA MASAYUKI | European Patent Office | 2015

    Free access

    HEAT CYCLE SYSTEM, IN-WHEEL MOTOR, AND VEHICLE

    TAKAHASHI AKESHI / TOYODA HIROYUKI / KOYAMA MASAKI et al. | European Patent Office | 2023

    Free access