| 摘要 |
PROBLEM TO BE SOLVED: To provide an expansion gate which enables easy adjustment of an opening dimension. SOLUTION: The expansion gate includes a guide lattice 1, a link 2 expandable in the right and left direction, and a stopper 3 detachably mounted to the guide lattice 1. The link 2 is formed by connecting a plurality of link materials 21 in a pantograph form, and at least one of connecting portions 4 connecting the link materials 21 to each other is vertically movably engaged with the guide lattice 1. The stopper 3 restricts the vertical movement of the connecting portion 4, has an engaging portion 31, engaged with a portion to be engaged 11 provided in the guide lattice 1, on at least one of the upper side or the lower side from the center in the vertical direction, and can be vertically inverted and mounted. The engaging portions 31 are arranged so as to be vertically asymmetrical to the center of the stopper 3. COPYRIGHT: (C)2010,JPO&INPIT
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