Snap button with pull-apart resisting structure

A snap button with pull-apart resisting structure, comprising a male part and a female part;

• said male part being provided on a bottom surface within a predetermined area with a raised portion, and at a central area with a connecting head that projects from said raised portion and is formed at a root portion with a narrowed neck portion;
• an area of the bottom surface of said male part extended from an edge of said male part to a line in parallel with that edge and transversely passing through a center of said narrowed neck portion of said connecting head forming a recess portion in said raised portion, so that there is a difference between a height from an end surface of said connecting head to said raised portion and a height from the end surface of said connecting head to said recess portion;
• and
• said female part being provided on a top surface with a raised portion that has an overall area slightly smaller than that of said female part, and at a central area with a through hole having predetermined size and shape;
• a part of said through hole being a non-full circular hole having a diameter slightly smaller than that of said connecting head on said male part and being enclosed in an elastic frame, and a groove being provided along an outer side of said elastic frame with a plurality of spaced supporting rods radially extended from an outer wall surface of said elastic frame to an inner wall surface of said groove;
• the other part of said central through hole being located at a position corresponding to said recess portion on said male part and in the form of an extended and curved hole with a raised frame of a predetermined height extended along said extended curved hole.