To provide an electromagnetic disc brake capable of maintaining high slidability of a rotary disc over a long period.SOLUTION: An electromagnetic disc brake comprises: a rotary disc which is extrapolated to a rotational shaft with spline teeth formed on an outer peripheral surface, in which disc teeth formed on an inner peripheral surface mesh with the spline teeth and rotate integrally with the rotational shaft, and which can slide in an axial direction of the rotational shaft; an armature which can move between a braking position where the rotary disc is pressed against a fixed body and a release position where the pressing against the rotary disc is released; an urging member which urges the armature toward the braking position; an electromagnet which moves the armature from the braking position to the release position against the urging force of the urging member when an electric current is supplied; and a resin ring which is fixed to the rotary disc at a position where it can contact a tip of the spline tooth, wherein an inner diameter dimension D1 of the resin ring is smaller than a diameter D2 of a root circle of the disc tooth and larger than a diameter D3 of a tip circle of the spline tooth.SELECTED DRAWING: Figure 6

    【課題】回転ディスクの高い摺動性を長期間に亘って保持できる電磁ディスクブレーキを提供する。【解決手段】電磁ディスクブレーキは、外周面にスプライン歯が形成された回転軸に外挿され、内周面に形成されたディスク歯がスプライン歯に噛合して、回転軸と一体回転し且つ回転軸の軸方向に摺動可能な回転ディスクと、回転ディスクを固定体に押圧する制動位置、及び回転ディスクへの押圧を解除する解除位置の間を移動可能なアマチュアと、アマチュアを制動位置に向けて付勢する付勢部材と、電流が供給されたときに付勢部材の付勢力に抗してアマチュアを制動位置から解除位置に移動させる電磁石と、スプライン歯の歯先に接触し得る位置で回転ディスクに固定された樹脂リングとを備え、樹脂リングの内径寸法D1は、ディスク歯の歯底円の直径D2より小さく、且つスプライン歯の歯先円の直径D3より大きい。【選択図】図6


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    Titel :

    ELECTROMAGNETIC DISC BRAKE AND HOIST FOR ELEVATOR


    Weitere Titelangaben:

    電磁ディスクブレーキ及びエレベーター用巻上機


    Beteiligte:

    Erscheinungsdatum :

    2020-12-10


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B66B Aufzüge , ELEVATORS



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