Elastic buckle structure and shell in narrow space

The invention discloses a narrow space elastic buckle structure and a shell, and relates to the technical field of shell assembly, a first shell of the structure is of a hollow structure with an opening in one end so as to form a first opening at the opening, and a second shell of the structure is of a hollow structure with an opening in one end so as to form a second opening corresponding to the first opening at the opening; the first opening and the second opening are in butt joint to enable the first shell and the second shell to be mutually covered to form a shell, a pressing part is arranged at the position, close to the first opening, of the first shell, the first shell protrudes at the first opening to form a protrusion, the pressing part is connected with the protrusion, and a groove for the protrusion to be embedded in is formed in the position, at the second opening, of the second shell. The bulge is embedded into the groove to lock the covering of the first shell and the second shell, and the press