| 摘要 |
<P>PROBLEM TO BE SOLVED: To construct a switch which is manufactured at low cost by eliminating welds in which a packing portion is hard to be exposed to wind and rain. <P>SOLUTION: The container of the switch has a construction in which each opening side of an upper container and lower container formed in a bowl shape is opposed to each other. In the upper container, the edge of the opening side is bent to an outer circumferential side in a right angle direction to form a packing surface, and is then bent downward from the outer circumferential part of the packing surface to form a tube-shaped packing guard; and the lower edge is bent in the outer circumferential direction to form a brim. In the lower container formed in a bowl shape, the opening is turned upward so as to be opposed to the opening side of the upper container, an edge of the opening side is bent in an outer circumferential direction to form a packing surface so as to be opposed to the packing surface of the upper container, the outer circumferential part is bent downward to form a tube-shaped packing guard, and the lower edge of the packing guard is bent in the outer circumferential direction to form a brim. Each container is arranged so that the packing surfaces are opposed to each other, the packing surfaces are loaded with a packing, and the brim of each container is fastened. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
