Patent ID: 8933358
Filing Date: 2015-01-13
Classification: H01H

Abstract:
1. A power transmission device for a vacuum interrupter, the device comprising: a driving link for adjusting a movable electrode of the vacuum interrupter; a driven link coupled to the movable electrode; a plurality of connection links configured to connect the driving link to the driven link, the plurality of connection links coupled to the driving link and the driven link such that an interval between the driving link and the driven link is varied as the plurality of links are folded with respect to each other; cams coupled between the plurality of connection links in a perpendicular direction; and cam guides located on side surfaces of the cams, each of the cam guides having a guide recess for slidably coupling and configured to guide the interval between the driving link and the driven link to change by selectively folding the connection links as a path of the cams varies, wherein each of the guide recesses includes: a first recess portion formed parallel to the movable electrode; a second recess portion formed at an end of the first recess portion at the movable electrode side, the second recess portion formed in an inclined shape towards the driven link-side end of the first recess portion; and a third recess portion formed at an end of the second recess portion at the movable electrode side, the third recess portion formed in an inclined shape towards the driving link-side end of the first recess portion.