Liquid holding unit and liquid ejection device

A liquid holding unit that supplies liquid to a liquid ejector of a liquid ejection device, the liquid holding unit comprising:

• a liquid holder configured to hold the liquid;
• a housing that accommodates the liquid holder;
• an inlet used to fill the liquid holder with the liquid;
• a plug configured to open and close the inlet, the plug including an elastically deformable plug body that covers the inlet and a holding member that holds the plug body and has higher rigidity than the plug body;
• a shaft arranged on one of the housing and the plug, the plug being pivotal about the shaft;
• an engagement portion arranged on the other one of the housing and the plug, the engagement portion being engaged with the shaft;
• and
• a cover that covers the plug from above,
• wherein the cover or the housing includes a restriction portion that contacts the holding member in a state in which the holding member is pivoted in a direction opening the inlet to restrict a pivot range of the holding member.

A liquid holding unit that supplies liquid to a liquid ejector of a liquid ejection device, the liquid holding unit comprising:

• a liquid holder configured to hold the liquid;
• a housing that accommodates the liquid holder;
• an inlet used to fill the liquid holder with the liquid;
• a plug configured to open and close the inlet, the plug including an elastically deformable plug body that covers the inlet and a holding member that holds the plug body and has higher rigidity than the plug body;
• a shaft arranged on one of the housing and the plug, the plug being pivotal about the shaft;
• an engagement portion arranged on the other one of the housing and the plug, the engagement portion being engaged with the shaft;
• and
• a cover that covers the plug from above,
• wherein the cover includes a pushing portion that is configured to push the plug toward the inlet.