| 摘要 |
PROBLEM TO BE SOLVED: To develop a method for securing strength equal to conventional drawing hardware by a simple fastening method such as machine screw fastening (without using a bolt), and drawing hardware using the method. SOLUTION: In this drawing hardware 1, a projection 5 (formed in a construction material shape having high rigidity and undeformable even if a force is applied) is attached to the column contact surface of a steel doubling plate; a recessed shape is carved (3) in a column 2; and a tensile force generated in the column is transmitted to the drawing hardware by meshing a projection and a recess. This method does not practically apply a force to a machine screw used for installation, and can thereby dispense with two to five bolts required for a conventional drawing hardware and having a diameter of 12 millimeter for fastening the column and the steel plate doubling plate. The " column " is exemplified, and anything such as a sill, the column, a girth, a beam and a girder may be preferable in a place for using the drawing hardware manufactured in this way. COPYRIGHT: (C)2004,JPO&NCIPI
|
