PROBLEM TO BE SOLVED: To provide a door structure for a fence having low cost and durability.SOLUTION: A door mounting structure in a fence comprises one support ring 31 fitted in a strut 11a in the vertical direction of the fence 12, other support ring 32 fitted in a mounting rod 21 in the vertical direction of the door 20, and connecting pieces 34 for connecting both support rings. Both support rings are divided in a portion of a circumference and can be increased in diameter, and the connecting pieces 34 are protruded forward from both divided edges thereof, respectively. The respective connecting pieces are overlapped and fastened by bolts 35 and nuts 36 to form a connecting plate. One of both support rings is fixed in the strut or the mounting rod, and the other is freely rotatable in the mounting rod or the strut. Both support rings are increased in diameter and are fitted in the strut of the fence and the mounting rod of the door. If the connecting pieces are overlapped and screwed in the fitted state, the connecting pieces constitute the connecting plate, and both support rings are united and the door is mounted to the strut.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】安価で耐久性のある柵用扉構造を提供する。【解決手段】柵１２の上下方向の支柱１１ａに嵌められた一の支持環３１と、扉２０の上下方向の取付杆２１に嵌められた他の支持環３２と、両支持環を連結する連結片３４とからなる。両支持環は、周囲の一部で割られて拡径可能となっているとともに、その両割縁から前方に連結片３４がそれぞれ突出し、その各連結片を重ね合わせてボルト３５・ナット３６、で締結されて連結板が形成されている。両支持環の一方は、支柱又は取付杆に固定され、他方は取付杆又は支柱に回転自在となっている。両支持環を拡径して柵の支柱及び扉の取付杆に嵌める。その嵌めた状態で、連結片を重ねてねじ止めすれば、その連結片が連結板を構成して両支持環が一体となって支柱に扉が取り付けられる。【選択図】図３
