PROBLEM TO BE SOLVED: To provide an accumulation type syringe type air mixed liquid ejector and the like ejecting a small amount of content liquid containing air in a foam shape.SOLUTION: A foam ejector 1 includes an operation part 10 and an ejection part 20. The operation part 10 includes: a cylinder 11 a piston pushing out air in the cylinder 11 to a tip cylinder part 11c and a rod 14a forming an air introduction path r1 between the rod 14a and the tip cylinder part 11c, and projecting from the tip cylinder part 11c. The ejection part 20 has: an outer cylinder part 21 having an ejection port 1a, and mounted on the tip cylinder part 11c and an inner cylinder part 22 having an opening part A communicating with the ejection port 1a, and disposed inside the outer cylinder part 21. The inner cylinder part 22 incorporates a piston 25 pushing out content liquid M, and is disposed with an annular elastic member 23 formed with a through hole 23a communicating with the opening part A between the outer cylinder part 21 and the inner cylinder part 22, so that the inner cylinder part 22 is formed with a liquid path r2 making the content liquid M from the opening part A flow to the ejection port 1a through the elastic member 23, and the inner cylinder part 22 is formed with air paths r3-r6 making air from the introduction path r1 be joined in the through hole 23a by pushing and opening an inner edge portion 23b of the elastic member 23.COPYRIGHT: (C)2014,JPO&INPIT【課題】空気を含む少量の内容液を泡状に噴出させる蓄圧式シリンジ型空気混合液噴出器等を提供する。【解決手段】泡噴出器1は、操作部10と噴出部20を備える。操作部10は、シリンダ11と、シリンダ11の空気を先端筒11cに押し出すピストンと、先端筒11cとの間に空気導入路r1を形成して先端筒部11cから突出するロッド14aを備える。噴出部20は、噴出口1aを有して先端筒部11cに装着される外筒部21と、噴出口1aに通じる開口部Aを有して外筒部21内に配置される内筒部22とを備える。内筒部22は、内容液Mを押し出すピストン25を内蔵し、外筒部21と内筒部22との間には、開口部Aに通じる貫通孔23aが形成された環状の弾性部材23が配置されることで、開口部Aからの内容液Mを噴出口1aに流通させる液路r2が形成されているとともに、導入路r1からの空気を弾性部材23の内縁部分23bを押し開いて貫通孔23aに合流させる空気路r3~r6が形成されている。【選択図】図5
