| 摘要 |
<p>A turnbuckle (10) is made by a method including preparing an iron tube (40) having a longitudinal through-hole (42). A diameter of each of two ends (50) of the iron tube (40) is reduced to form a coupling section (12) having an engaging hole (121), with an interconnecting section (11) interconnected between the coupling sections (12). The interconnecting section (11) is punched in a direction perpendicular to the longitudinal through-hole (12) to form a transverse through-hole (13) perpendicular to the longitudinal through-hole (42) and between the coupling sections (12), leaving two opposite peripheral wall portions (44) spaced by the transverse through-hole (13) and forming a bend (14) extending inward from each of two end edges (46) of each peripheral wall portion (44) into the longitudinal through-hole (42). An abutting portion (15) is formed between each bend (14) and one of the end edges (46) of one of the periphera l wall portions (44). Inner threading is formed in the engaging hole (121) of each coupling section (12).</p> |
