| 摘要 |
PROBLEM TO BE SOLVED: To prevent, over a long period, rollers from coming out of a rail even if a floating force or a swing occurs on a door by simple structure and reduce cost by reducing the number of members. SOLUTION: The rollers 4 having recessed peripheral grooves 3 on the outer peripheral parts thereof are installed in a hanger frame 2 fitted to the upper part of the door 1 and a floating prevention part 6 having a recessed part 5 is projectedly fitted to the hanger frame 2. The peripheral grooves 3 of the rollers 4 are engaged with the upper edge part 9 of the upper rail 8 installed at the upper part of an opening part 7 so that the rollers 4 can be runnably put thereon. The recessed part 5 of the floating prevention part 6 is loosely fitted to the lower edge part 10 of the upper rail 8. COPYRIGHT: (C)2005,JPO&NCIPI
|
