PROBLEM TO BE SOLVED: To provide a fishing float capable of easily making a fine adjustment in buoyancy.SOLUTION: A buoyancy fine adjustment float is constituted of an upper buoyant body 10, a lower gravity body 20, a waterproof elastic ring 30, a waterproof elastic tube 31, a threaded shaft 41 and an adjusting nut 50. The upper buoyant body 10 and the lower gravity body 20 form a sealed air chamber by interposing the waterproof elastic ring 30 between flat surfaces facing each other, fix one end of the threaded shaft 41 to the upper buoyant body 10 by providing a through-hole 22 penetrating through an axis center of the lower gravity body 20 and protrude the screw part of the other end from the through-hole opening by inserting the through-hole 22, and insert the threaded shaft 41 of the air chamber by the waterproof elastic tube 31 and seal the through-hole 22 of the lower gravity body 20. The adjusting nut 50 is screwed in a screw part protruding from an opening of the lower gravity body 20. An interval between the lower gravity body 20 and the upper buoyant body 10 is changed by the rotating operation of the adjusting nut 50 and a volume of the air chamber is changed, and thereby the buoyancy fine adjustment of the float is made possible.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】浮力を容易に微調整できる釣りの浮きを提供する。【解決手段】上部浮力体１０、下部重力体２０、防水弾力リング３０、防水弾力チューブ３１、ネジ付シャフト４１、及び調整ナット５０から構成され、上部浮力体１０及び下部重力体２０は、相対する平坦面の間に防水弾力リング３０を介挿して密封された空気室を形成し、下部重力体２０の軸心を貫通する貫通孔２２を設けてネジ付シャフト４１の一端を上部浮力体１０に固定すると共に貫通孔２２を挿通して他端のネジ部を貫通孔開口から突出し、防水弾力チューブ３１により、上記空気室のネジ付シャフト４１を挿通して下部重力体２０の貫通孔２２をシールし、調整ナット５０は、下部重力体２０の開口から突出したネジ部に螺合して、調整ナット５０の回転操作により、下部重力体２０と上部浮力体１０との間隔を変えて、空気室の容積を変えることによって、浮きの浮力微調整を可能とした。【選択図】図１
