Non-welded and anti-deformation lamp base and non-welded and anti-deformation light bulb

A non-welded and anti-deformation lamp base, comprising:

• a metal shell (1), wherein the metal shell (1) is provided with:
• an external threaded portion (11) on an outer surface of the metal shell (1);
• an accommodating cavity (12) in an interior of the metal shell (1);
• an opening (15) formed at one end of the metal shell (1) and communicating with the accommodating cavity (12);
• a first annular side wall (14) arranged on the other end of the metal shell (1) and extending from one end of the external threaded portion (11);
• and
• a second annular side wall (41) arranged in an internal space (141) enclosed by the first annular side wall (14);
• wherein one end of the second annular side wall (41) is connected to one end of the first annular side wall (14);
• an end plate (13) arranged at the other end of the metal shell (1);
• wherein the end plate (13) is bent from the other end of the second annular side wall (41) and extends towards a center line (X) of the metal shell (1);
• wherein the second annular side wall (41) and the end plate (13) cooperate to form, at an outer side of the end plate (13), an accommodating slot (4) recessing inwards toward the interior of the metal shell (1);
• a plastic insulating piece (2) connected to the end plate (13) and configured to prevent inward sinking deformation of the end plate (13);
• wherein the plastic insulating piece (2) is located on the center line of the metal shell (1);
• the plastic insulating piece (2) is provided with an assembling hole (21);
• the assembling hole (21) communicates with the accommodating cavity (12);
• and
• a conductive rivet (3), wherein the conductive rivet (3) is assembled in the assembling hole (21).