| 摘要 |
PURPOSE: A bolt/nut-type doorframe fixing device is provided to simplify an assembling work by variously coupling a first nut, a second bolt-nut, and a third bolt to each other. CONSTITUTION: A bolt/nut-type doorframe fixing device comprises multiple doorframe fixing grooves, doorframe fixing brackets, first nuts, second bolt-nuts, and third bolts. The doorframe fixing grooves are formed on the top, bottom, and side surfaces of a doorframe(100). The doorframe fixing brackets are attached on the fronts of the doorframe fixing grooves and have nut inserts. The first nuts are inserted into the nut inserts and have nuts. The second bolt-nuts have bolts and nuts to be coupled to the first nuts. The third bolts have bolts to be coupled to the second bolt-nuts. |
