| 摘要 |
PURPOSE: A rotary type band tightener is provided to simply tighten or release bands using one hand and to be applied to various kinds of articles. CONSTITUTION: A rotary type band tightener includes a first band(10), a second band(20), a body(30), a handle, and a controlling unit. A long hole is formed at the end part of the second band. A second rack part is formed along the lower inner wall of the long hole. The body includes an inner moving part, a circular recess, a center hole, and one directional ratchet. The handle includes a pinion part and a corresponding ratchet. The controlling unit releases the engagement of the ratchets. |
