| 摘要 |
PROBLEM TO BE SOLVED: To easily and inexpensively remodel between a sash including a lower frame having a step difference and a sash including a lower frame of barrier-free by few replacement components without using exclusive lower frame and sash.SOLUTION: A general double sliding sash is remodeled into a barrier-free double sliding sash 1B. The double sliding sash 1B comprises an outer sash 2 and an inner sash 3. A first receiving part 22 and a second receiving part 23 having a height near to a rail height, are respectively engaged with indoor side first step difference part 14 and a second step difference part 15 of a first rail 17 and a second rail 18 provided in a lower frame 11 of a frame body. The respective sashes 2 and 3 retract a door roller of a top rail by projecting the door roller of a bottom rail 11. An attachment 35 extending in a lower frame direction is fitted to an engaging receiving part formed on a lower end of a bottom rail 6, and packing is installed in an engaging part of its lower end, and is allowed to air-tightly/water-tightly abut on the first rail and the second rail. A seal member is installed in both-end engaging parts of the attachment 35.SELECTED DRAWING: Figure 2 |
