Solar wing and sectional type secondary unfolding hinge thereof

The invention discloses a solar wing and a sectional type secondary unfolding hinge thereof. The secondary unfolding hinge comprises a male hinge body and a female hinge body which are rotationally connected through a hinge shaft. A swing rod is installed at the tops of the two hinge plates through a swing rod shaft, a locking column is fixedly installed on the swing rod, an ejector rod is fixedlyconnected into the female hinge, a linkage wheel and a shifting fork are installed on the hinge shaft on the outer sides of the hinge plates, and the shifting fork is fixedly connected with the linkage wheel. A volute spiral spring is arranged between the male hinge and the female hinge; the male hinge is provided with a locking groove connected with the locking column in a clamped mode. The sectional type secondary unfolding hinge can be automatically unlocked after being locked in place for the first time, and secondary unfolding and locking are achieved. 本发明公开了一种太阳翼及其分段式二次展开铰链，该二次展开铰链包括通过铰链轴转动连接的公铰链和母铰链；在两个铰链板的顶部通