| 摘要 |
PROBLEM TO BE SOLVED: To use batteries having a different size from each other in a device so as to improve the compatibility by providing a cylindrical main body part, in which at least one of a type AA battery or a type C battery can be installed, and providing a battery cap, of which outer diameter is formed at the nearly same size with the type C battery or a type D battery. SOLUTION: Battery caps 10, 20, 30 to be used for type AA battery or type C battery are formed so that length of a main body part 31 thereof is formed a little shorter than the length of the type AA battery and that they are desirably made of a resin. The main body part 31 is provided with holes 12, 22, 32 having an inner diameter, in which a type AA battery or the type C battery can be installed. The caps 10, 20, 30 can be formed with the structure that the main body part thereof is provided with a division line 25 so as to enlarge the inner diameter. With this structure, a battery can be easily inserted into each hole, and surely installed. Two of the cap 30 having the same outer diameter with the type C battery and the cap 20 having the same outer diameter with a type D battery can cope with basic condition, but the cap 20, in which the type C battery can be installed in the hole 22, is desirably provided. |
