According to the present invention, disclosed is a bush unit for a sub-frame. According to an exemplary embodiment of the present invention, a bush unit for a sub-frame comprises: an inner pipe coupled to a sub-frame and a vehicle body; a mid-pipe inserted into the inner pipe and having a penetration hole formed therein in an outer circumferential direction in at least one predetermined section; a bush rubber vulcanized and attached to an outer surface of the inner pipe and an inner surface of the mid-pipe; and a chamber having an outer pipe coupled to an outer circumference of the mid-pipe, wherein a fluid filling groove is formed on an outer surface of the bush rubber, wherein the penetration hole and the fluid filling groove are closed by the outer pipe and become a chamber where a fluid is able to be accommodated. Thus, as being closed by the outer pipe, the penetration hole on the mid-pipe and the fluid filling groove formed in the bush rubber can be formed as a chamber able to accommodate a fluid, and perform a damping function appropriate for a characteristic of a vibration generated in the overall frequency domain of a vehicle body and an engine while a vehicle runs, due to the intrinsic number of vibrations of the fluid filled in the chamber.

    서브 프레임용 부시 유닛이 개시된다. 본 발명의 실시 예에 따른 서브 프레임용 부시 유닛은 ⅰ)서브 프레임과 차체에 결합되는 인너 파이프와, ⅱ) 상기 인너 파이프에 삽입되며, 외주 방향을 따라 적어도 하나의 설정된 구간에 관통홀이 형성된 미드 파이프와, ⅲ) 상기 인너 파이프의 외표면과 미드 파이프의 내표면에 가류 접착되는 부시고무 및 ⅳ) 상기 미드 파이프의 외주면에 결합되는 아웃터 파이프를 포함하며, 상기 부시고무의 외표면에는 상기 관통홀과 연결되는 유체 충진홈이 형성되고, 상기 관통홀 및 유체 충진홈은 상기 아웃터 파이프에 의해 폐쇄되며, 유체가 수용될 수 있는 챔버로서 구비될 수 있다.


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    Title :

    BUSH UNIT FOR SUB-FRAME


    Additional title:

    서브 프레임용 부시 유닛


    Contributors:

    Publication date :

    2017-02-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / F16F SPRINGS , Federn



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