AIR INJECTION VALVE AND HOLLOW BODY USING THE SAME

To provide an air injection valve which is compact in size, light in weight, and hardly causes air leakage, allows the easy injection of air, and is hardly deteriorated, and a hollow body using the same.SOLUTION: An air injection valve has: a stepped circular columnar valve core 11 from which a center portion of a circular column is hung out; and a cylindrical holding body 15 having a bottomed main body 151 into which the valve core is incorporated in a tight adhesion state, and a flange 152 joined to an inner wall face of the hollow body 20 at an upper end part of the main body. The valve core protrudes from the holding body at its tip part while having a slit which penetrates a center part, and the holding body has a needle hole penetrated with an air injection needle of the hollow part which is inserted with the slit of the valve core at a bottom part of the main body being a seat face of the valve core.SELECTED DRAWING: Figure 1 【課題】コンパクト・軽量で空気漏れし難く、空気が注入しやすく、かつ劣化し難い空気注入用バルブ及びこれを用いた中空体を提供する。【解決手段】本発明に係る空気注入用バルブは、円柱の中央部分が張り出した段付き円柱状のバルブコア１１と、そのバルブコアが密着状態に内蔵される有底の本体１５１及びその本体の上端部に中空体２０の内壁面に接合されるフランジ１５２を備える円筒状の保持体１５と、を有する空気注入用バルブであって、前記バルブコアは、中心部を貫通するスリットを有してその先端部が前記保持体から突出し、前記保持体は、前記バルブコアの座面となる本体の底部に、前記バルブコアのスリットを挿通させた前記中空体の空気注入針が貫通する針穴を有してなる。【選択図】図１