| 摘要 |
PROBLEM TO BE SOLVED: To provide a guide rail-folding device which does not protrude from the side of a guide rail and is easy to conduct the folding and extending operations.SOLUTION: A folding device 15 housed in the cross-sectional space of a fixing side rail 3b and a movable side rail 3a is provided with: a fixing side base 10 fixed to the fixing side rail 3b; a movable side base 11 fixed to the movable side rail 3a and having first and second grooves 21 and 22; and a connection member 19 which is freely rotatably supported on the fixing side base by a support shaft 20 and has first and second pins 23 and 24 freely slidably engaged with the first and second grooves. The movable side rail 3a turns around virtual primary and secondary rotation centers O1 and O2. |
