LOCK STRUCTURE, UNLOCKING JIG, AND UNLOCKING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a lock structure, an unlocking jig, and an unlocking method by which an upper case and a lower case can be easily and surely united in one body and separated from one another, and locking means can be prevented from being damaged at unlocking time. SOLUTION: Lock pieces 4 are provided at a plurality of locations on the outer peripheral surface 13 of either one of a lower case 7 and an upper case 8 and lock piece accepting sections 16 which accept the lock pieces 4 in engaging states so as to unite the cases 7 and 8 in one body when the upper case 8 is completely put on the lower case 7 are provided at the locations corresponding to the pieces 4 on the outer peripheral surface 15 of the other case. In addition, unlock piece inserting clearances 25 for inserting unlock pieces 24 which release the pieces 4 from the accepting sections 16 are provided on the downsides of the pieces 4 when the pieces 4 are engaged with the accepting sections 16.