| 摘要 |
A facilitated tightening device allowing a bolt to be inserted smoothly by preventing a screw block engaged with the bolt from being inclined or fallen down, comprising a base (2) having a bolt insert hole (7) partly forming a bolt receiving surface (9) and an inclined surface (8) gradually decreasing in diameter toward the insert side of the bolt (6) in the state of being continued with the bolt insert hole (7) formed therein, a screw block (3) slid along the inclined surface (8) according to the axial movement of the inserted bolt (6) to be engaged with the bolt (6), an energizing member (5) energizing the screw block (3) in inner radial direction, and guide means (10, 11) engaged with the screw block (3) to prevent the screw block (3) from being fallen down in the base (2).
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