Din rail installation kit and its operation method

A DIN rail installation kit operation method, said DIN rail installation kit being used to install an electronic device on a DIN rail or quickly disassemble said electronic device from said DIN rail, said DIN rail installation kit comprising a main body, a spring hook, a latch fastener and an elastic element combined with said electronic device, said latch fastener being pullable twice to move between a first position and a second position, the DIN rail installation kit operation method comprising the steps of, wherein:

• (S101) the user pulls down said latch fastener for the first time to move from said first position to said second position, a buckle of said latch fastener pushes down on a buckle portion of a hook body of said spring hook and deflects said hook body toward an adjacent side wall of said latch fastener, and then said buckle passes to below said buckle portion, said spring hook automatically rebounds so that a hook end of said hook body is temporarily positioned on said adjacent side wall of said latch fastener;
• (S102) the user releases said latch fastener and uses said elastic element to drive said latch fastener upward, said buckle is then buckled on said buckle portion of said hook body, and a second buckle means of said latch fastener is kept away from a first buckle means of said main body to present said DIN rail installation kit in a removable state;
• (S103) the user pulls down said latch fastener secondarily, said buckle is separated from said buckle portion of said hook body, and said spring hook rebounds automatically;
• and
• (S104) the user releases said latch fastener, said latch fastener is reset to said first position by said elastic element, and at the same time said second buckle means of said latch fastener and said first buckle means of said main body relatively buckled on said DIN rail to exhibit a state of tight coupling.