| 摘要 |
The present invention relates to a shutter structure of aperture, which includes a base, a shutter, a spring, upper shell. Wherein the shutter has several lugs on the top coordinating to the sockets, and a shaft barrel extending down from the center of the bottom side, on said lugs a projection is formed on each lug end for inserting into the socket; the base has a thimble at the center bottom; for achieving pivot of the shutter as the plug plugging in normal way, an indexing mechanism consisting of two sets of beveled guide teeth are built on the inside of the thimble of the base and the bottom end of the shaft barrel of the shutter separately and oppositely; for locking the shutter as the lugs receiving an unbalance pressing force, a locking device consisting of a set of axial ribs and a set of chamfers are built on the shaft of shaft barrel and the inside wall of the thimble so that they are in disengaging state in the normal time, and they engages together as one pressing force exerting on one lug to lock the shutter.
|
