in FIGS. 2A and 2B; FIG. 5B is a side view of the primary resin section shown in FIG. 5A; FIG. 6A is a plan view illustrating a primary resin section forming part of a pressure sensor of the related art; FIG. 6B is a side view of the primary resin section shown in FIG. 6A; and FIG. 6C is a cross-sectional view of a connector case of the pressure sensor employing the primary resin section shown in