Switch seat body structure and manufacturing method thereof

A switch seat body structure comprising a main body for assembling with an internal component of a switch, the main body being defined with an axis, the main body being an assembly of a metal head section and a nonmetal belly section, the metal head section having an outer surface and an inner surface, the metal head section having a shoulder section and a skirt section connected with the shoulder section, the shoulder section and the skirt section together defining a shaft hole, the shoulder section protruding radially beyond the skirt section, the skirt section extending toward the nonmetal belly section in the direction of the axis, the nonmetal belly section being connected on at least a part of the skirt section, whereby the nonmetal belly section is connected with the metal head section to form an integral structure;

• wherein a part of the skirt section is formed with a recessed section, the nonmetal belly section having an annular recess formed in an outer surface thereof and being connected on the recessed section of the skirt section, the recessed section being formed on the inner surface of the metal head section;
• a subsidiary shoulder section is formed in the recessed section at a free end of the skirt section, the subsidiary shoulder section protruding radially toward the shaft hole, the subsidiary shoulder section being received in the annular recess of the nonmetal belly section.