PROBLEM TO BE SOLVED: To provide an inexpensive underwater float having a simple structure, capable of coping easily with various state changes of a sea surface or underwater by a structure of the underwater float or by buoyance adjustment.SOLUTION: An underwater float comprises an upper cylinder 1 having a round cross section, and a lower cylinder 2 having a round cross section, and having an inner diameter larger than an outer diameter of the upper cylinder 1. In the underwater float A, a resin rubber 3 having a shape blocking the lower cylinder 2, and provided with a hole through which a fishing line 5 passes is connected to one tip part of the upper cylinder 1, and the fishing line 5 is allowed to pass through the upper cylinder 1 inside, the hole and the lower cylinder 2 inside in the state where the rubber 3 side of the upper cylinder 1 is inserted into the lower cylinder 2, and further, the hole is blocked by using a rod-like 4 or spherical (unillustrated) article.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】さまざまな海面、海中の状況変化を水中ウキの構造、浮力の調整によって容易に対応でき、かつ、構造が簡単で安価な水中ウキを提供する。【解決手段】水中ウキは、断面が円形の上部筒1と、断面が円形で、かつ、内径が上部筒1の外径より大きい下部筒2とからなり、上部筒1の一方の先端部に、下部筒2を塞ぐ形状で、かつ、釣糸5の通る穴を設けた樹脂製のゴム3を接続し、上部筒1のゴム3側を下部筒2に挿入した状況で、上部筒1内、穴、下部筒2内に釣糸5の通ることを特徴とし、さらに、穴を棒状4又は球状(図示せず)のものを用いて、塞ぐことを特徴とする水中ウキAである。【選択図】図1
