| 摘要 |
PURPOSE: A holder which is able to selectively receive cap at one side and is fixed at a support by a screw at the other side. CONSTITUTION: A holder which is able to selectively receive comprises: a first holder(110) which is directly coupled to a subject; a second holder(130) which is fixed to the support; an elastic device(150) having elasticity to the first and second holders; and a stopper which prevent separation of the first holder from the second holder. |
