| 摘要 |
PROBLEM TO BE SOLVED: To dispose a lock plate without forming a space to a vertical wall of an upper rail so as to prevent a lock plate from being rotated in the engagement release direction by a load in the lengthwise direction of the rail applied to an upper rail at the time of the lock plate being engaged with a lower rail. SOLUTION: A vertical wall 11 of an upper rail 1 is disposed between second flange walls 23 of a lower rail, in the state of being brought close to one of the second flange walls 23, and a lock plate 5 is disposed between the other second flange wall 23 and the vertical wall 11, in the state of being brought close to the other second flange wall 23. |
