| 摘要 |
PROBLEM TO BE SOLVED: To obtain a flush extension bolt having a hooking rod member capable of being fixed to a position according to the change in protrusion of the hooking rod member corresponding to the depth of a hooking hole in a floor face. SOLUTION: The hooking rod members 13, 15 are vertically movably installed on a case 12 buried in a vertical stile 32 of a door 30. The flush extension bolt 10 for fixing the door 30 is fixed by dropping the hooking members 13, 15 into the hooking hole 64 provided in the floor surface 60 has the inner wall 17 of a case provided with a plurality of engagement parts 18 formed successively in the vertical direction. The hooking rod members 13, 15 has an elastic engagement arm having an engagement element 19 capable of bening moved in interlock with the vertical movement of the members 13, 15 and being elastically engaged with the engagement parts 18 of the inner wall 17 of the case 12. The elastic engagement element 19 can be engaged with one of the engagement parts 18 corresponding with the dropping depth of the hooking rod members 13, 15 into the hooking hole 64. COPYRIGHT: (C)2006,JPO&NCIPI
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