드럼 브레이크가 개시된다. 본 실시 예에 의한 드럼 브레이크는 내주면에 형성된 복수개의 외륜궤도 홈을 가지는 외륜; 외주면에 형성된 복수개의 내륜궤도 홈을 가지는 내륜; 상기 외륜궤도 홈에 접촉하는 외륜 접촉면 및 상기 내륜궤도 홈에 접촉하는 내륜 접촉면을 가지는 복수개의 볼; 및 상기 복수개의 볼을 원주 방향으로 소정의 간격으로 유지하게 하기 위한 복수의 케이지 홈이 형성된 케이지를 포함하여 제공될 수 있다. 상기 외륜 접촉면과 상기 외륜궤도 홈이 형성하는 외륜 접촉각은 상기 내륜 접촉면과 상기 내륜궤도 홈이 형성하는 내륜 접촉각과 다른 크기를 가질 수 있다

    An actuator used in a drum brake according to the present embodiment may include a case with a space therein, a shaft rotated by a motor and having a worm gear formed thereon, a wheel gear engaged with the worm gear, a spindle bolt passing through and coupled to the wheel gear and including a head and a column of which an outer circumferential surface is provided with a thread, a spindle nut fastened to the thread of the spindle bolt, a first piston of which one side is in contact with the spindle nut and the other side is in contact with the first brake shoe, a second piston of which one side is in contact with the head of the spindle bolt and the other side is in contact with the second brake shoe, and an O-ring disposed between the spindle nut and the wheel gear.


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    Title :

    DRIVING DEVICE AND DRUM BRAKE COMPRISING THE SAME


    Additional title:

    구동 장치 및 이를 포함하는 드럼 브레이크


    Contributors:
    YOODON JUNG (author)

    Publication date :

    2024-07-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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