| 摘要 |
PROBLEM TO BE SOLVED: To provide an expansion gate which is suitable for a house in an urban area in which the securement of a large dwelling lot is difficult. SOLUTION: The expansion gate is formed of a link structure 1 which is constructed in a laterally expandable manner, a plurality of frame bodies 3 each of which is composed of longitudinal frames 2, 2 arranged at an interval in a fore-and-aft or depthwise direction, and an upper crosspiece 16 connecting the longitudinal frames, and functions to support the link structure 1 by the front and rear longitudinal frames, and a caster bearer 4 fixed to a lower edge of at least one of the frame bodies. The caster bearer 4 has a depthwise dimension L2 which is at least twice or more the depthwise dimension L1 of the frame body 3, and has frame body fixture selectable portions 5a, 5b formed therein at frontward and rearward locations except for a depthwise central location. Therefore the frame body 3 is fixed to the bearer at either the frontward location or the rearward location with respect to the depthwise central location. COPYRIGHT: (C)2005,JPO&NCIPI
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