A shield connector includes a tubular metallic shield shell integrally attached to the outer circumferential surface of a housing made of resin by insert molding. The hollow rivet has a seal surface annularly extending outside the battery housing case, and a hollow portion formed with an exhaust port continuous to the inner edge of the seal surface and positioned at the through hole to allow gas in the interior space to flow out through the exhaust port. In a preferred embodiment, the polymer consists of from 6 to 25 subunits, at least 50% of which contain a guanidino or amidino sidechain moiety. In this manner, items can be purchased directly from the protected areas. The micro-machine switch further comprises a first insulating section formed in a region where the first distributed constant line, faces the cantilevers, , and a second insulating section, for keeping a voltage value of a first control signal together with the first insulating section.