| 摘要 |
A door suspension device is provided that has a compact structure capable of reliably preventing the derailing of door rollers and the tilting of a door when the door is opened and closed, while reducing running resistance caused by a derailing prevention mechanism. First door rollers (21, 22) run in contact with a lower rail 13b, and are rotatably supported to a first door roller supporting member 23 that suspends a door 11. Second door rollers (26, 27) are rotatably supported to swing members (24, 25) swingably connected to the first door roller supporting member 23, and are provided so as to be capable of coming into contact with an upper rail 13a. A drive connection portion 28 holds the door 11 and connects the door 11 to an open-close drive mechanism 12. An elastic connection mechanism 29 includes an elastic portion 33 capable of changing the relative positions of the second door rollers (26, 27) and the drive connection portion 28, and connects the swing members (24, 25) to the drive connection portion 28. The second door rollers (26, 27) are installed between the first door rollers (21, 22) on the door leading end side and the door trailing end side. |
