| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lock device of seat-back of an automobile in which the number of component parts of a key-cylinder can be reduced, its structure can be simplified and a rigidity of the key-cylinder can be assured. <P>SOLUTION: A seat-back 5 is constituted in such a way that it can be freely changed over between its raised attitude and its fallen attitude, wherein the seat-back comprises a lock mechanism 10 for use in locking the seat-back 5 at its raised attitude, a lock knob 20 for releasing the locked state of the lock mechanism 10 and a key-cylinder 30 for use in locking the lock knob 20 and also releasing a locked state of the lock knob 20, an abutting part 33 abutted against an abutted part 26 arranged at the lock knob 20 is integrally and cooperatively arranged at a cylinder body part 31 of a key-cylinder 30, and the key-cylinder 30 can be freely changed over between its locked state in which the abutting part 33 abuts against the abutted part 26 to prevent the lock knob 20 from being turned and its lock released state in which the abutting part 33 allows the lock knob 20 to turn without being abutted against the abutted part 26. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
