| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable communication terminal device which prevents degradation of a communication performance and prevents decline of handleability of a mechanical type unlocking key even when the mechanical type unlocking key is formed of a metallic material.SOLUTION: In a portable communication terminal device, a mechanical type unlocking key 1 formed of a plate material is freely detachably held by a key holding part 2. The mechanical type unlocking key 1 is provided with a slit 5 cut from an opposite end for an insertion part 3 to a cylinder lock toward an insertion part 3 obliquely crossing between front and back surfaces. The key holding part 2 is provided with a fitting projection part 6 projected in an oblique direction along the slit 5 from a support surface of the mechanical unlocking key 1, and for the mechanical type unlocking key 1, the slit 5 is fitted to the fitting projection part 6 so that movement in a plate thickness direction is regulated. |
