Structure for quickly installing PCB (Printed Circuit Board)

The utility model discloses a structure for quickly installing a PCB (Printed Circuit Board), which comprises a PCB main body and a pre-positioning frame assembly, the pre-positioning frame assembly comprises a positioning main frame body, the positioning main frame body is provided with a PCB positioning through groove, the positioning main frame body is provided with two frame body positioning mechanisms, and the inner wall of the PCB positioning through groove is provided with a board body positioning mechanism; through holes are formed in the upper portion and the lower portion of the coarse positioning cavity, a first limiting ring is integrally formed in the portion, located in the coarse positioning cavity, of the first positioning rod, a first spring is fixed between the first limiting ring and the top of the coarse positioning cavity, and the first positioning rod penetrates out of the through hole below the coarse positioning cavity. According to the utility model, the groove matched with the first