Module retracting type installing and uninstalling device

A module retracting type installing and uninstalling device, wherein, the device comprises a base, a slide block, a pressing cover and a bail, wherein the slide block is provided above the base, the bail passes through the slide block and is nested around the base, and the pressing cover is provided above the slide block;

• the slide block comprises an elongated slide block base body, two relatively longer sides of the slide block base body connect to side walls adjacent to front ends, middle portions of the two side walls are individually provided with a U-shaped groove, circle centers of the two U-shaped grooves are arranged oppositely and concentrically, the slide block base body is provided with a curve structure adjacent to the middle portion, postmedian portion of the slide block base body clings to the surface of the base, rear end of the slide block base body is provided with a square hole, and the square hole is nested around a triangular latch of the base;
• and the bail is provided with a first rotating shaft, a second rotating shaft, a third rotating shaft and a fourth rotating shaft, wherein, the first rotating shaft and the second rotating shaft are individually located in two snap slots at two sides of the front end of the base, and the first rotating shaft and the second rotating shaft are arranged concentrically, and the third rotating shaft and the fourth rotating shaft are located in the two U-shaped grooves, and the third rotating shaft and the fourth rotating shaft are arranged concentrically;
• and
• the pressing cover comprises a square pressing cover base body, a pressure resilient sheet is provided at the rear of an upper surface of the pressing cover base body, and the pressure resilient sheet clings to the upper surface at a lower location of the slide block, and is pressed on the base.