According to the present invention, disclosed is a rotary shaft assembly body having a waterproof structure capable of improving waterproof performance by providing pressure to a non-aqueous fluid contracted by external pressure and existing between a rotary shaft and a housing. According to one embodiment of the present invention, a rotary shaft assembly body located under water for driving comprises: a rotary shaft coupled to a motor; a housing including a through hole coupled to the rotary shaft; a fluid pocket formed from the outer surface of the housing toward the inside; and a space between the rotary shaft and the housing, wherein the fluid pocket and the space are filled with the non-aqueous fluid, and the rotary shaft assembly body is contracted by external pressure when the rotary shaft assembly body is put under water.
본 발명에서는 외부 압력에 따라 수축되어 회전축과 하우징 사이에 존재하는 비수성 유체에 압력을 제공함으로써 방수 성능을 향상시킬 수 있는 회전축 조립체가 개시된다. 일 예로, 수중에 위치하여 구동되는 회전축 조립체에 있어서, 모터에 결합된 회전축; 상기 회전축이 결합되는 관통홀을 포함하는 하우징; 상기 하우징의 외면으로부터 내부를 향하여 형성되는 유체 포켓; 및 상기 회전축과 하우징 사이의 이격 공간을 포함하고, 상기 유체 포켓 및 이격 공간에는 비수성 유체가 충전되며, 상기 유체 포켓은 상기 회전축 조립체의 수중 투입 시, 외부 압력에 의하여 수축되는 회전축 조립체가 개시된다.
rotation axis assembly having waterproof structure
방수 구조를 갖는 회전축 조립체
2017-05-23
Patent
Electronic Resource
Korean
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