| 摘要 |
<p>A capacitor element (20), in which a bipolar electrode foil connected with a lead terminal (10) is wound through a separator, is stored in a bottomed cylindrical outer case (30) made of aluminum or the like. A tube (100) made of a flexible material is movably set to the outer periphery of the round bar (12) of the lead terminal and the tube-provided lead terminal is drawn outward through a sealing body (110) set on the inner periphery of the opening of the outer case (30). The sealing body is constituted so that an elastic ring (113) made of a flexible material is set on the outer periphery of a sealing plate (112) made of a hard material harder than the tube. The tube-provided lead terminal is inserted into each of a pair of through-holes (111) provided at the sealing plate. The tube is deformed due to the pressure produced when inserting the lead terminal into each through-hole so as to extend in the inserting direction and thereby, it is possible to bring the tube into close contact with the round bar and with the through-holes. Therefore, it is possible to improve the airtightness of a lead-drawing portion.</p> |
