| 摘要 |
PROBLEM TO BE SOLVED: To provide a stopper to position a door body of an opening door and a folding door or the like at the closing position requiring no fixed projecting door stop and having no constantly projecting members from the door body side. SOLUTION: A locking means 11 mounted on an upper end part of a door body 4 comprises a vertically advancing/retractable locking body 14, a magnet 15 mounted on an upper end of the locking body 14, and a spring 16 to urge the locking body 14 in an elevating direction by the push-up force slightly smaller than the force balanced with the weight of the whole locking body 14 including the magnet 15, the locking body 14 is kept in a lowered retracted position, and a locked piece 12 mounted on the position opposite to the locking means 11 when the door body 4 is closed on an upper side of an opening part to be opened/closed is formed of a magnetic plate to attract the locking body 14 upward by the magnetic attraction to the magnet 15, and a recessed stepped part 20 for fitting a tip of the upwardly attracted locking body 14 is provided. |
