DISCHARGE PUMP

To discharge a content even after releasing a depressing operation.SOLUTION: A discharge pump 1 comprises: a pump member 2 that has a stem 10 erected inside a mouth A1 of a container body A in which a content is stored; and a discharge member 3 that discharges the content forward. The discharge member comprises: a depressing head 20 that can depress the stem; a storage cylinder 21 into which the content in the stem is supplied by the stem depressing operation; a discharge cylinder 23 that is disposed before the storage cylinder and discharges the content in the stem outside through a discharge port 23a by the stem depressing operation; and a storage plunger 22 that moves toward one side in an axial direction following supplying of the content into the storage cylinder and is biased toward the other side. The discharge cylinder is communicated with the inside of the storage cylinder, and the storage plunger extrudes the content in the storage cylinder to the discharge cylinder side following movement to the other side.SELECTED DRAWING: Figure 2 【課題】押下げ操作の解除後も内容物を吐出すること。【解決手段】内容物が収容される容器本体Ａの口部Ａ１の内側に立設されたステム１０を有するポンプ部材２と、内容物を前方に向けて吐出する吐出部材３とを備え、吐出部材は、ステムを押下げ操作可能な押下ヘッド２０と、ステムの押下げ操作によってステム内の内容物が内部に供給される貯留シリンダ２１と、貯留シリンダの前方に配置されると共にステムの押下げ操作によって、ステム内の内容物を、吐出口２３ａを通じて外部に吐出する吐出筒２３と、貯留シリンダ内への内容物の供給に伴って軸方向のうちの一方側に向けて移動すると共に他方側に向けて付勢される貯留プランジャ２２とを備え、吐出筒が貯留シリンダ内に連通し、貯留プランジャが他方側への移動に伴って貯留シリンダ内の内容物を吐出筒側に押し出す、吐出ポンプ１を提供する。【選択図】図２