LIQUID FEEDING DEVICE

To inhibit idling of a pump in a liquid feeding device.SOLUTION: A liquid feeding device (100) according to the invention has a pump mechanism (110) and a feeding mechanism (120). The feeding mechanism (120) includes: a cylinder (122) which is a bottomed cylinder member opening at the side of a communication passage (114), is connected at an opening portion to the communication passage (114), and may store a liquid in at least a part thereof; a sealing member (124) which is disposed in the cylinder (122), may move along the cylinder (122), and seals the liquid in the cylinder (122); and a compression member (126) which compresses the sealing member (124) to a pump chamber (114p).SELECTED DRAWING: Figure 2 【課題】送液装置においてポンプの空転を抑制する。【解決手段】本発明による送液装置（１００）は、ポンプ機構（１１０）と、補給機構（１２０）とを有する。補給機構（１２０）は、連絡流路（１１４）側が開口した有底筒状部材であり、開口箇所が連絡流路（１１４）に接続され、少なくとも一部に液体を収容可能なシリンダー（１２２）と、シリンダー（１２２）内部に配置され、シリンダー（１２２）に沿って移動可能であり、シリンダー（１２２）内の液体を封止する封止部材（１２４）と、封止部材（１２４）をポンプ室（１１４ｐ）に向けて加圧する加圧部材（１２６）とを有する。【選択図】図２