Patent ID: 9579695
Date: 2017-02-28
CPC Classifications: B08B,H01L

Claim:
1. A substrate cleaning apparatus comprising: a cleaning body head unit in which a cleaning body configured to contact a substrate for a cleaning process, a shaft configured to support the cleaning body, and a rotating mechanism configured to rotate the shaft are connected to a first base member such that, when the cleaning body is moved in a vertical direction, the rotating mechanism is integrally moved in the vertical direction along with the cleaning body while the cleaning body, the shaft, and the rotating mechanism are connected to the first base member; a first load detection unit including one end connected to the first base member of the cleaning body head unit to detect a load received from the cleaning body head unit; and a buoyancy imparting unit connected to the other end of the first load detection unit to impart buoyancy to the cleaning body head unit via the first load detection unit, wherein the buoyance imparting unit includes a second base member connected to the other end of the first load detection unit, a guide part configured to support the second base member such that the second base member becomes elevatable, a first elevating mechanism configured to elevate the second base member, and a third base member configured to retain the guide part and the first elevating mechanism, and the third base member is connected to a second elevating mechanism separately from the first elevating mechanism such that the second base member, the guide part, and the first elevating mechanism are integrally elevated by the second elevating mechanism while being retained on the third base member; wherein the first elevating mechanism includes an elevating shaft which is configured to be either in a contact state or in a separate state with respect to the second base member.