CONNECTING STRUCTURE OF HORIZONTAL FRAME MEMBER WITH VERTICAL FRAME MEMBER IN DOOR FRAME

摘要

PROBLEM TO BE SOLVED: To provide a connecting structure of a horizontal frame member with a vertical frame member in a door frame allowing a worker to assemble the door frame composed of frame members having a width face provided with an inclined fringe efficiently without impairing finish precision.;SOLUTION: In this connecting structure, end parts in the direction of length of the width faces 11, 31 or the like of the horizontal frame members 1, 2 and the vertical frame members 3, 4 in the door frame are formed into the inclined fringes 11A, 31A or the like, protruding pieces 15, 16 or the like are formed in the end parts in the direction of length of the frame members on one side, insertion grooves 35, 36 or the like in which the protruding pieces are inserted are formed in the frame members on the other side, and a fitting groove S extended in the direction of groove width of the insertion groove is formed on terminal sides of the protruding pieces in the frame members on one side. While the fitting groove S of the protruding pieces inserted into the insertion grooves and an end fringe of the insertion groove are mutually fitted, the inclined fringes of the width faces of the frame members on one side and the inclined fringes of the width faces of the frame members on the other side are mutually butted to be flush, and their rear surface sides are formed by welding them.;COPYRIGHT: (C)2009,JPO&INPIT