To achieve cost reduction, prevention of dust contamination events, and improvement in flow channel opening/closing response.SOLUTION: A check valve comprises: a cap 51; a plug 52 sitting on a seating surface; a columnar first extension part 51b which is provided on the cap 51, and extends toward the plug 52 from the cap 51; and a columnar second extension part 52b which is provided on the plug 52, extends toward the cap 51 from the plug 52, and is slidably mounted on an external surface of the first extension part 51b. A spring 53 is interposed between the cap 51 and the plug 52. This check valve comprises a retainer 54 which is attached to the cap 51, extends toward the plug 52 from the cap 51, and has a cylindrical wall part 54b located on a radial direction outer side of the second extension part 52b. When a clearance between the external surface of the first extension part 51b and an internal surface of the second extension part 52b is represented by CL1 and a clearance between an external surface of the second extension part 52b and an internal surface of the cylindrical wall part 54b is represented by CL2, the check valve has a relationship of CL1

    【課題】コストの低減、塵埃混入の事象の防止、かつ流路開閉レスポンスの向上を図る。【解決手段】キャップ51と、着座面に着座するプラグ52と、キャップ51に設けられ、キャップ51からプラグ52に向けて延出する円柱状の第一延出部51bと、プラグ52に設けられ、プラグ52からキャップ51に向けて延出し、第一延出部51bの外面に摺動自在に装着される円筒状の第二延出部52bと、を備える。キャップ51とプラグ52との間にはスプリング53が介設されている。キャップ51に取り付けられ、キャップ51からプラグ52に向けて延出し、第二延出部52bの径方向外側に配置される円筒壁部54bを有するリテーナ54と、を備える。第一延出部51bの外面と第二延出部52bの内面とのクリアランスをCL1とし、第二延出部52bの外面と円筒壁部54bの内面とのクリアランスをCL2とした場合に、CL1<CL2の関係を有する。【選択図】図7


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    Titel :

    CHECK VALVE AND BRAKE SYSTEM


    Weitere Titelangaben:

    チェックバルブおよびブレーキシステム


    Beteiligte:
    KOBORI TETSUO (Autor:in) / NAKAMURA MOTOYASU (Autor:in)

    Erscheinungsdatum :

    2021-11-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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