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A liquid container includes a container body that accommodates a liquid containing portion containing a liquid. A residual liquid quantity detecting unit can be connected to the container body so as to detect a residual amount of liquid remaining in the liquid containing portion. A fitting mechanism

A liquid container includes a container body that accommodates a liquid containing portion containing a liquid. A residual liquid quantity detecting unit can be connected to the container body so as to detect a residual amount of liquid remaining in the liquid containing portion. A fitting mechanism, which allows the container body and the residual liquid quantity detecting unit to relatively rotate so as to be detachably attached to each other, may also be formed in a region where the container body and the residual liquid quantity detecting unit are connected to each other.

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1. A liquid container to be mounted in a liquid consuming apparatus, the liquid container comprising: a container body comprising a front face having a connection-port insertion opening, the container body accommodating a liquid containing portion containing a liquid, the liquid containing portion p

1. A liquid container to be mounted in a liquid consuming apparatus, the liquid container comprising: a container body comprising a front face having a connection-port insertion opening, the container body accommodating a liquid containing portion containing a liquid, the liquid containing portion provided with a connection port for leading out the liquid, the connection port configured to be inserted into the connection-port insertion opening;a residual liquid quantity detecting unit provided at the front face, the residual liquid quantity detecting unit connected to the connection port so as to detect a residual amount of liquid remaining in the liquid containing portion, the residual liquid quantity detecting unit having a liquid lead-out portion configured to supply the liquid to the liquid consuming apparatus; anda fitting mechanism, which allows the container body and the residual liquid quantity detecting unit to be detachably attached to each other, and which is formed in a region where the container body and the residual liquid quantity detecting unit are connected to each other. 2. The liquid container according to claim 1, wherein the fitting mechanism includes: a detecting-unit fitting portion in which at least one convex wall or concave groove is formed in the container body; and a container fitting portion which is fitted to the detecting-unit fitting portion and in which at least one convex wall or concave groove is formed in the residual liquid quantity detecting unit. 3. The liquid container according to claim 2, wherein the detecting-unit fitting portion is an annular convex wall and the container fitting portion is an annular convex wall which is rotatably fitted to the detecting-unit fitting portion. 4. The liquid container according to claim 1, further comprising: a concave locking groove that is formed in the container body; anda locking piece that is formed in the residual liquid detecting unit and that engages with the locking groove. 5. A liquid container to be mounted in a liquid consuming apparatus, the liquid container comprising: a container body that accommodates a liquid containing portion containing a liquid, the liquid containing portion provided with a connection port for leading out the liquid;a residual liquid quantity detecting unit that is connected to the connection port so as to detect a residual amount of liquid remaining in the liquid containing portion, the residual liquid quantity detecting unit having a liquid lead-out portion configured to supply the liquid to the liquid consuming apparatus; anda fitting mechanism, which allows the container body and the residual liquid quantity detecting unit to be detachably attached to each other, and which is formed in a region where the container body and the residual liquid quantity detecting unit are connected to each other;wherein the container body is formed with an opening through which the connection port and a connection needle formed in the residual liquid quantity detecting unit are connected to each other, andthe fitting mechanism is in: an eccentric state where the connection needle deviates from a center of the opening; ora center state where the connection needle is located at the center of the opening. 6. The liquid container according to claim 5, wherein the fitting mechanism includes: a detecting-unit fitting portion in which at least one convex wall or concave groove is formed in the container body; anda container fitting portion which is fitted to the detecting-unit fitting portion and in which at least one convex wall or concave groove is formed in the residual liquid quantity detecting unit,the fitting mechanism is in the eccentric state when the detecting-unit fitting portion is fitted to the container fitting portion, andthe fitting mechanism is in the center state when the detecting-unit fitting portion is coupled with the container fitting portion. 7. A method of manufacturing a liquid container to be mounted in a liquid consuming apparatus, the liquid container having a container body that comprises a front face having a connection-port insertion opening, the container body accommodating a liquid containing portion containing a liquid, the liquid containing portion provided with a connection port for leading out the liquid, the connection port configured to be inserted into the connection-port insertion opening; and a residual liquid quantity detecting unit provided in the front face, the residual liquid quantity detecting unit connected to the connection port so as to detect a residual amount of liquid remaining in the liquid containing portion, the residual liquid quantity detecting unit having a liquid lead-out portion configured to supply the liquid to the liquid consuming apparatus, the method comprising the steps of: fitting the container body and the residual liquid quantity detecting unit by a fitting mechanism, which is provided in a region where the container body and the residual liquid quantity detecting unit are connected to each other, and which allows the container body and the residual liquid quantity detecting unit to relatively rotate so as to be detachably attached to each other;coupling the container body and the residual liquid quantity detecting unit with each other by relatively rotating the container body and the residual liquid quantity detecting unit, after fitting the container body and the residual liquid quantity detecting unit by the fitting mechanism; andconnecting the residual liquid quantity detecting unit and the liquid containing portion to each other, after coupling the container body and the residual liquid quantity detecting unit with each other. 8. A method of manufacturing a liquid container to be mounted in a liquid consuming apparatus, the liquid container having a container body that accommodates a liquid containing portion containing a liquid, the liquid containing portion provided with a connection port for leading out the liquid; and a residual liquid quantity detecting unit that is connected to the connection port so as to detect a residual amount of liquid remaining in the liquid containing portion, the residual liquid quantity detecting unit having a liquid lead-out portion configured to supply the liquid to the liquid consuming apparatus, the method comprising the steps of: fitting the container body and the residual liquid quantity detecting unit by a fitting mechanism, which is provided in a region where the container body and the residual liquid quantity detecting unit are connected to each other, and which allows the container body and the residual liquid quantity detecting unit to relatively rotate so as to be detachably attached to each other;coupling the container body and the residual liquid quantity detecting unit with each other by relatively rotating the container body and the residual liquid quantity detecting unit, after fitting the container body and the residual liquid quantity detecting unit by the fitting mechanism; andconnecting the residual liquid quantity detecting unit and the liquid containing portion to each other, after coupling the container body and the residual liquid quantity detecting unit with each other;wherein the container body is formed with an opening through which the connection port and a connection needle formed in the residual liquid quantity detecting unit are connected to each other,the connection needle is in an eccentric state position where the connection needle deviates from a center of the opening, when the container body and the residual liquid quantity detecting unit are fitted to each other by the fitting mechanism, andthe connection needle is in a center state position where the connection needle is located at the center of the opening, when the container body and the residual liquid quantity detecting unit are coupled with each other.