| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the cost for maintenance, without replacement of parts or maintenance frequently. <P>SOLUTION: A door device has: a box B fixed on a place of installation; a door body D housed in the box B; and a drive mechanism P for making the door body D come in/out to/from the box B. The drive mechanism P includes: a rotating body 2 rolling caused by a drive of a driving source 1; and a rail 3 engaging with the rotating body 2 and guiding the rotating body 2 along a coming in/out direction of the door body D. <P>COPYRIGHT: (C)2012,JPO&INPIT |
