Rivet assembly

A rivet assembly configured to rivet an object to be riveted and comprising:

• a mandrel comprising
• a mandrel head;
• a mandrel shank extending from an end of the mandrel head along an axial direction and having
• a joining section;
• a pull section located at an end of the mandrel shank away from the mandrel head and having a reverse taper with a reverse tapered surface tapering from an end of the pull section toward the joining section;
• multiple engaging grooves radially formed in the reverse tapered surface of the reverse taper and arranged along the axial direction at spaced intervals to form multiple engaging rings between the multiple engaging grooves;
• and
• adjacent two of the engaging rings formed besides each one of the multiple engaging grooves having a diameter difference;
• and
• a rivet body configured to be sleeved on the mandrel and comprising
• a rivet head;
• and
• a rivet tube extending from an end of the rivet head;
• an axial hole axially formed through the rivet head and the rivet tube of the rivet body;
• and
• a diameter of the rivet tube being smaller than a diameter of the rivet head and being equal to or smaller than a diameter of the mandrel head of the mandrel;
• wherein
• the joining section of the mandrel is configured to be inserted within the axial hole of the rivet body;
• the pull section of the mandrel is configured to extend out of the rivet body;
• the rivet tube of the rivet body is configured to face toward the mandrel head of the mandrel;
• the rivet body is configured to deform while subjecting to a stress for riveting the object to be riveted.