| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively avoid reverse insertion of a battery. <P>SOLUTION: The portable type power supply device, in which a cylindrical battery CB can be built, comprises a first spring coil 31 formed by spirally bending a metallic wire; an insulation ring part 33 opening inside while covering a periphery of the first spring coil 31; and a second spring coil 32 connected with the first spring coil 31. The inside diameter of the opening of the ring part 33 is formed larger than the outside diameter of a convex-shaped electrode terminal TT, and the tip of the first spring coil 31 is exposed to the inside of the opening of the ring part 33. The inside diameter of the upper face coil of the second spring coil 32 is formed larger than the outside diameter of the convex-shaped electrode terminal TT. The first spring coil 31 is brought into contact with the convex-shaped electrode terminal TT of one of the parallely aligned cylindrical batteries CB, and the second spring coil 32 is brought into contact with a flat-shaped electrode terminal FT of the other of the parallely aligned cylindrical batteries CB. <P>COPYRIGHT: (C)2012,JPO&INPIT |
