主权项 |
1. A device for controlling a limiting plate, including a first shell, a second shell, a slide pressing block, a first slider, a second slider, a first elastic element, and a second elastic element, the first shell and the second shell assembled into a cavity shell, wherein:
the slide pressing block, the first slider, the second slider, the first elastic element and the second elastic element are positioned in the cavity shell; the slide pressing block can slide longitudinally along the cavity shell and the first slider and the second slider can slide transversely along the cavity shell, where the longitudinal direction refers to the direction from an end part of the cavity shell to a root part of the cavity shell, where the transverse direction refers to the direction from the first shell to the second shell; the cavity shell comprises a first slider limiting slot and a second slider limiting slot, where the first slider is positioned in the first slider limiting slot and the second slider is positioned in the second slider limiting slot; the first shell comprises a first shell hole; the first slider comprises a first slider protrusion and the second slider comprises a second slider protrusion; the second shell comprises a second shell hole; the first elastic element presses against the first slider such that the first slider protrusion extends out of the first shell hole; the second elastic element presses against the second slider such that the second slider protrusion is positioned in the cavity shell; the first slider protrusion is in clearance fit with the first shell hole and the second slider protrusion is in clearance fit with the second shell hole; the first slider and second slider are positioned in succession along the longitudinal direction in the cavity shell, and wherein the device comprises an extrusion mechanism which comprises a first extrusion part and a second extrusion part connected with the slide pressing block, wherein the extrusion mechanism is configured such that: when pushing down the slide pressing block, the first extrusion part presses against the first slider such that the first slider protrusion retracts back into the cavity shell without the second extrusion part pressing against the second slider, and when the slide pressing block is further pushed down, the second extrusion part presses against the second slider such that the second slider protrusion retracts back into the cavity shell. |