CONNECTING STRUCTURE FOR FRAME

摘要

PROBLEM TO BE SOLVED: To prevent lowering of strength at connections of frames, SOLUTION: In a connecting structure for a frame 3 to connect a blocked frame 3 constructed in a three-dimensional form by connecting a plurality of main materials 1 extending in parallel via horizontal materials 2 in series to the other frame 3 of the same structure, protruded insertion portions 8 formed somewhat smaller than the cross section at an almost right angle to the extending direction of the main materials 1 and provided with pin holes 7 and receiving portions 11 provided with spaces in which the insertion portions 8 of the same shape in the other frame 3 are insertable and with pin holes 10 communicating with the pin holes 7 in the insertion portions 8 are provided at one ends of the main materials 1 and at the other ends of the main materials 1, respectively. The pin holes 7 in the insertion portions 8 and the pin holes 10 in the receiving portions 11 are so formed that pins to be inserted through the pin holes 10 in the receiving portions 11 and the pin holes 7 in the insertion portions 8 can be at an angle of about 45 degrees to the horizontal materials 2 in the cross section at an almost right angle to the extending direction of the main materials 1.