PURPOSE: To prevent illegal drawing by providing interruptive material which is fixed on the inner face of a main-body case between the engaging part of a key with a release lever and a gap between the opening part of the main-body case and a cash containing box.

CONSTITUTION: A guard film (interruptive material) 51 is fixedly positioned on the inner face of the main-body case 1 between the engaging parts 22 and 44 of the key and the release lever 41 and the gap t formed between the opening part 2 of the main case 1 and the cash containing box 11 through the use of attachment members 55 and 56. The guard film 51 is provided in such a way that its tip part is brought into contact with the base part of the cash containing box 11. Thus, the engaging parts 22 and 44 of the key 21 and the release lever 41 are more surely interrupted from an external part by the guard film 51. A slit is formed at the tip part of the guard film 51 so as to permit the cash containing box 11 to more smoothly operate drawing and containing.