PROBLEM TO BE SOLVED: To improve user-friendliness of an operation unit in a liquid ejection device.SOLUTION: An operation unit 50 for operating a nozzle unit 52 that ejects liquid L, which is used in a liquid ejection device 10 for ejecting the liquid L, includes: a grip part 58 that an operator grips a connection part 77 arranged in the direction of one end part of the grip part 58, to which a tube group 15 including a tube where the liquid circulates and/or a cable for supplying a drive signal and a tube group position regulation tool 80 having a fixed part 81, at least part of which is fixed to the connection part 77, and a tube group holding part 83 for holding the tube group 15 so as to bundle it.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】液体噴出装置の操作部の使い勝手を向上させる。【解決手段】液体Lを噴出する液体噴出装置10に用いられ、前記液体Lを噴出するノズル部52を操作するための操作部50であって、操作者が把持する把持部58と、前記把持部58の一方の端部方向に配置され、前記液体が流通する管および/または駆動信号を供給するケーブルを含む管群15が接続される接続部77と、前記接続部77に少なくとも一部が固定される固定部81および前記管群15を束ねるように保持する管群保持部83を有する管群位置規制具80と、を備える。【選択図】図4
