| 摘要 |
PROBLEM TO BE SOLVED: To provide a grid door formed of a grid panel, in which a locking device installed to the grid door is prevented from lock releasing operation by a hand inserted through grids formed of vertical wires and horizontal wires. SOLUTION: The grid panel is made to be a vertical-wire coarse arrangement with a coarse grid portion 1 and fine grid portion 2. A vertical frame 7 and a horizontal muntin 8 of the door frame are attached to the vertical-wire coarse arrangement to make a pair of grid door A. Respective fine grid portions 2 are used as a door front side and hung on a support column 12 to make a double swinging door for entrance/exist of a fence C. At the fine grid portion 2, a pitch-reducing vertical wire 5 is arranged between the vertical wires 3, and the pitch in the portion between the vertical wires 3, 5 is formed to the extent of 2.5 cm, preventing the insertion of a hand from outside the premise for the rotation of a thumb-turn. Thus, a grid door A in a good appearance, based on the design of the fence C is produced. COPYRIGHT: (C)2011,JPO&INPIT |
