| 摘要 |
A string length adjustment device is provided to have simple structure and to adjust the length of the string effectively and to give a powerful anchoring force to the string. A string length adjustment device comprises: a first housing(110); a second housing(120) which is combined with the first housing and in which a through-hole is formed in the center and a first screw part is formed in the back side of the inside; a circular plate part in which a second screw part geared with a first screw part is formed in the upper side; a handle part partly exposed by a through-hole of the second housing; a winding unit(130) including a winding rod; and a spring(140) which elastically pressurizes the winding unit to the second housing. |
