| 摘要 |
PROBLEM TO BE SOLVED: To propose a key device of not damaging even when strong torsional torque acts on a mechanical key, by surely installing an upper case and a lower case of a first key part having the mechanical key, in the key device of an electronic key system of a constitution for connecting a first key member and a second key member.SOLUTION: A key device 20 is provided so that an upper case 27 and a lower case 28 of a first key member 21 are relatively rotatably formed along abutting surfaces 27d and 28d, the upper case 27 is provided with a plurality of locking parts 35a, 36a and 37a provided in parallel to a relative rotation surface, the lower case 28 is provided with a plurality of locking receiving parts 35b, 36b and 37b for fitting the locking parts 35a, 36a and 37a by relative rotation, respectively, and the upper case 27 and the lower case 28 are also provided with a return check mechanism 38 for checking relative reverse rotation of the case when joining the upper case 27 and the lower case 28 by fitting the locking parts to the locking receiving parts. |
