< Topic >Sound insulation performance is good, the ear plug where the using selfishness is good is offered.SolutionsAs outside body 1,3 of the air which possesses rigidity is provided, restoration the being full filler 7 which possesses the cutoff Characteristic of sound inside outside body 1,3, as in one end of outside body 1,3, it possesses the flange 12 of interposition possible size in the earhole, the software flange body 10 which possesses flexibility and springiness is installed. Fitting to the earhole, it is possible to cut off outside sound.< Choice figure >Drawing 4【課題】遮音性能がよく、使い勝手のよい耳栓を提供する。【解決手段】剛性を有する中空の外体1,3を設けるとともに、外体1,3内に音の遮断性を有する充填材7を充填し、外体1,3の一端に、耳穴に挿入可能サイズのフランジ部12を有するとともに、柔軟性と弾力性を有するソフトフランジ体10を取り付ける。耳穴にフィットして外音を遮断することができる。【選択図】図4
