AUTOMATIC OPENING MECHANISM

The present invention relates to the field of low-voltage electrical apparatuses, and in particular to an automatic opening mechanism, comprising an operating shaft, a delayed energy-storage mechanism, a reset mechanism and a tripping mechanism. The delayed energy-storage mechanism comprises a rotating disk and a first energy-storage spring, the reset mechanism comprises a reset gear, and the tripping mechanism comprises a tripper. The tripper triggers the delayed energy-storage mechanism in an energy-storage state; and the first energy-storage spring releases energy to drive the rotating disk to rotate from an energy-storage position to an energy-release position so that the delayed energy-storage mechanism switches to an energy-release state, and at the same time, the operating shaft is driven to rotate from a closing position to an opening position. The operating shaft rotates from the opening position to the closing position, and the rotating disk is driven to rotate from the energy-release position to th