| 摘要 |
<p>The present invention relates to a shutter for a vacuum circuit breaker, which comprises: a shutter plate unit which has a two-bar shutter link structure, is a single shutter plate structure, elevates a roller which is inserted into or drawn out from a breaker in-out guide for breaking an arch which can be generated at a VCB bushing terminal or preventing contact between the VCB bushing terminal and other material; a shutter lever unit for opening or closing the shutter plate unit; a shutter lever fixation unit which is fixated to a cradle for fixating the shutter lever and making an end of the shutter lever unit rise and fall; a shutter side plate unit which is vertically installed and moving upward or downward according to the movement of the shutter lever unit; and a horizontal connection plate unit for making the shutter plate unit move according to the movement of the shutter side plate unit. According to the shutter for a vacuum circuit breaker with a simplified link structure of the present invention, the number of possible malfunction and failure parts is minimized by minimizing the link connection unit using the two link structure and single plate structure, and the random fall of the shutter plate can be prevented by supporting the shutter lever unit by modifying a roller of the shutter lever into an upward driving way using the in-out guide in case of roller separation.</p> |
