Folding door structure

A folding door structure, comprising:

• a fixed frame, an upper slide and a lower slide located on the fixed frame, and a plurality of door leaves sandwiched between the upper slide and the lower slide;
• wherein the folding door structure further comprises an upright column, an upper sliding bracket, a lower sliding bracket and a first lock component;
• the plurality of door leaves are hinged with the upright column;
• the upper sliding bracket is located at an upper end of the upright column and comprises an upper pulley and an upper fixed seat, and the upper pulley is fixedly arranged on the upper fixed seat and slidingly provided in the upper slide;
• the lower sliding bracket is located at a lower end of the upright column and comprises a lower pulley and a lower fixed seat, and the lower pulley is fixedly arranged on the lower fixed seat and slidingly provided in the lower slide;
• both the upper fixed seat and the lower fixed seat are fixedly arranged on the upright column, and the upright column is sandwiched between the upper slide and the lower slide through the upper pulley and the lower pulley;
• and
• the first lock component comprises a first latch, which is mounted inside the upright column, and both ends of which are extended out from a top end and a bottom end of the upright column to insert into the upper slide and/or the lower slide.