JP2018069705A - Liquid storage unit and liquid ejecting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid storage unit and a liquid injection device capable of reducing the frequency of liquid of a plug member adhering to a finger or the like when a user opens and closes the plug member. SOLUTION: A liquid storage unit 30 for supplying a liquid to a liquid injection device has a liquid storage unit 40 for storing the liquid, a housing for arranging the liquid storage unit 40, and a note for injecting the liquid into the liquid storage unit 40. It includes an inlet 43 and a plug member 50 that opens and closes the injection port 43. The plug member 50 includes an elastically deformable plug body 52 that covers the injection port 43, and a holding member 51 that is more rigid than the plug body 52 and holds the plug body 52. Of the shaft portion 37 for rotating the plug member 50 and the engaging portion 54 that engages with the shaft portion 37, one is provided in the housing and the other is provided in the plug member 50. [Selection diagram] FIG. 7

Description

  The present invention relates to a liquid storage unit that stores a liquid to be supplied to a liquid ejecting unit included in a liquid ejecting apparatus, and a liquid ejecting apparatus.

  For example, Patent Document 1 discloses a liquid ejecting apparatus (liquid consuming apparatus) having a liquid ejecting section that ejects liquid onto a target such as paper. The liquid ejecting apparatus includes a tank (an example of a liquid container) that stores ink (an example of a liquid) supplied to a liquid ejecting unit, a cap (an example of a plug member) that opens and closes an inlet of the tank, and a tank A liquid storage unit having a cover for opening and closing the opening of the space to be disposed; A holding portion is provided inside the cover for holding the cap removed by the user while the cover is in the open position. When the cap is held by the holding portion, the cap is positioned on a moving region (moving path) from the open position to the closed position of the cover, so that the movement of the cover to the closed position is inhibited. For this reason, it is possible to avoid forgetting to close the cap removed by the user at the inlet.

JP-A-2006-504

  By the way, in the liquid ejecting apparatus described in Patent Document 1, since the user removes the cap by picking it with a finger, there is a problem that the ink of the cap adheres to the finger and the user's hand is easily stained with ink. The above-described problem is generally common even in a liquid storage unit in which the liquid supplied to the liquid ejecting unit is other than ink.

  An object of the present invention is to provide a liquid storage unit and a liquid ejecting apparatus that can reduce the frequency with which liquid of a plug member adheres to a finger or the like when a user opens and closes the plug member.

  A liquid storage unit that solves the above-described problem is a liquid storage unit that supplies a liquid to a liquid ejection unit included in a liquid ejection device, the liquid storage unit capable of storing the liquid, and a housing that arranges the liquid storage unit. An injection port for injecting the liquid into the liquid storage portion; and a plug member for opening and closing the injection port, wherein the plug member is an elastically deformable plug body covering the injection port, and the plug A holding member that holds the stopper main body, and one of a shaft portion for rotating the stopper member and an engaging portion that engages with the shaft portion is the housing. The other is provided on the plug member.

  According to this configuration, when the user opens and closes the plug member, for example, when performing a liquid injection operation for injecting liquid into the liquid storage unit, the frequency of the liquid in the plug body adhering to the user's finger or the like can be reduced. In addition, since the injection port is opened and closed by rotating the plug member around the shaft, when the plug member is opened and closed by grasping the end opposite to the shaft of the holding member, the principle of the lever is used. The force required for opening and closing the plug member can be reduced.

  In the liquid storage unit, the holding member includes one end and the other end, and a side end intersecting the one end and the other end, and a grip portion for opening and closing the inlet is provided at the one end. Preferably it is.

  According to this configuration, since the user can open and close the plug member by holding the grip portion with a finger, the operation is facilitated, and the frequency with which the liquid in the plug body adheres to the finger or the like during the open / close operation can be further reduced. .

In the liquid storage unit, it is preferable that the stopper main body is disposed between the grip portion and the other end of the holding member.
According to this configuration, when the user opens and closes the plug member, a finger or the like accidentally touches the portion of the plug body that seals the inlet, and the liquid in the plug body adheres to the user's finger or the like. It becomes easier to avoid.

  The liquid storage unit includes a plurality of the liquid storage portions, a plurality of the plug members respectively corresponding to the plurality of liquid storage portions, and a plurality of the plug members, one for each corresponding liquid storage portion. It is preferable to have the said stopper main body.

  According to this configuration, since the plug member individually provided in the liquid storage portion is configured to open and close, the liquid in the plug body can be more easily operated when the plug member is opened and closed as compared with a configuration in which a plurality of plug bodies are integrally provided. Can be further reduced in frequency of attaching to the user's finger or the like.

In the liquid storage unit, it is preferable that the holding member has an elongated shape that is long in one direction, and the stopper main body is movably held in a direction along the longitudinal direction of the holding member.
According to this configuration, since the plug member has a degree of freedom in the position of the plug body in the longitudinal direction of the holding member, the holding member is positioned so as to be positioned with respect to the inlet when the plug body fits or hits the inlet. It moves relative to it and securely seals the inlet. Therefore, it is possible to reduce the frequency of occurrence of injection sealing errors. For example, it is possible to suppress the entry of foreign matter into the liquid storage unit and the evaporation or volatilization of the liquid from the liquid storage unit due to a sealing error at the inlet.

  In the liquid storage unit, the convex portion and the concave portion for positioning and guiding the plug member with respect to the injection port by inserting the convex portion into the concave portion in a state where the plug member closes the injection port. It is preferable that a positioning guide part is further included, wherein one of the convex part and the concave part is provided on the holding member, and the other is provided on the liquid storage part or the housing.

  According to this configuration, when the plug member is moved from the open position to the closed position, the plug member can be aligned by inserting the convex portion into the concave portion. For this reason, the plug body securely seals the injection port. Therefore, it is possible to suppress the entry of foreign matter into the liquid storage part and the evaporation or volatilization of the liquid from the liquid storage part due to a sealing error of the inlet.

  The liquid storage unit further includes a cover that covers the stopper member, and the cover or the housing is in contact with the holding member in a state in which the holding member is rotated in a direction to open the inlet, thereby providing a rotation range of the holding member. It is preferable to have a restricting part to restrict.

  According to this configuration, since the rotation range of the holding member when the plug member is opened is regulated, for example, the rotation range of the holding member is not regulated, and the plug member is rotated about 180 degrees. Compared to the configuration arranged at the open position, the liquid in the plug body is less likely to adhere to the user's finger or the like when the plug member is opened or closed. Therefore, the frequency with which the liquid of the plug body adheres to the user's finger or the like can be further reduced.

Preferably, the liquid storage unit further includes a cover that covers the plug member, and the cover includes a pressing portion that presses the plug member toward the inlet.
According to this configuration, when the cover is closed, the pressing portion presses the plug member toward the inlet, thereby suppressing the floating of the plug member and preventing evaporation and volatilization of the liquid.

  In the liquid storage unit, the holding member includes a through hole into which at least a part of the plug body is inserted, and an opening on the opposite side of the through hole to the plug body is covered with a covering member, and the covering member is It is preferable that the liquid storage unit is provided corresponding to the color of the liquid stored in the liquid storage unit.

  According to this configuration, the covering member serves as both the blinding of the through hole of the holding member and the color display. Therefore, the appearance of the plug member is good, and the user can check the color by looking at the cover member when opening the plug member, so that it is possible to reduce injection mistakes for injecting the wrong color liquid into the liquid storage portion.

  In the liquid storage unit, the holding member is located on one end side, the first member provided with the plug body, the second member located on the other end side than the first member, and the first member. And a rotating portion provided between the first member and the second member in a state where the plug member is open in a direction in which the plug body approaches the inlet with respect to the second member. It is preferable that the first member and the second member take a straight posture in which the first member and the second member are linearly arranged in a state where the bent member is rotated and the stopper member is closed.

  According to this configuration, since the holding member takes a straight posture with the stopper member closed, the stopper body can seal the injection port. In addition, since the holding member takes a bent posture with the plug member opened, the plug main body faces the inlet side, so that the liquid in the plug main body is less likely to adhere to the user's finger or the like. Therefore, the frequency with which the liquid in the plug body adheres to the user's finger or the like during the opening / closing operation of the plug member can be further reduced.

In the liquid storage unit, it is preferable that the holding member is provided with a biasing member that biases the holding member in a direction in which the holding member is bent from the straight posture to the bending posture.
According to this configuration, since the holding member is biased in the direction of taking the bending posture, the holding member does not have to be bent by adjusting the force applied by the user when opening the plug member. Take a bent posture. Therefore, the frequency with which the liquid in the plug body adheres to the user's finger or the like during the opening / closing operation of the plug member can be further reduced.

  The liquid storage unit includes a cover that opens and closes in a closed state that covers the plug member and an open state that does not cover the plug member, and the first member and the second member in a state where the cover is closed It is preferable to include a posture holding mechanism that holds the holding member in the straight posture at the closed position by contacting at least one of them.

  According to this configuration, when the cover is closed after closing the stopper member, the holding member is held in a straight posture by the posture holding unit contacting at least one of the first member and the second member. For this reason, even if the holding member is urged in the bending direction, the plug member can be held in the closed position with the cover closed. Therefore, it is possible to reduce the frequency of occurrence of sealing errors due to the plug body being displaced in a direction away from the inlet by the biasing force of the biasing member. For this reason, for example, due to a sealing error, foreign matters can be prevented from being mixed into the liquid storage portion, and evaporation or volatilization of the liquid from the liquid storage portion to the outside can be suppressed.

  A liquid storage unit that solves the above-described problem is a liquid storage unit that supplies a liquid to a liquid ejection unit included in a liquid ejection device, the liquid storage unit capable of storing the liquid, and a housing that arranges the liquid storage unit. An injection port for injecting the liquid into the liquid storage portion; and a plug member for opening and closing the injection port, wherein the plug member is an elastically deformable plug body covering the injection port, and the plug A holding member that holds the stopper body, and the liquid storage part or the housing has a guide part that slidably holds the holding member of the stopper member, and holds the holding member. It is preferable that the member is slidably held by the guide portion.

According to this configuration, since the injection port is opened and closed by sliding the plug member, it is not necessary to pull out the plug body from the injection port, and the force required for opening and closing the plug member can be reduced.
In the liquid storage unit, it is preferable that the holding member has an elongated shape that is long in one direction, and the stopper main body is movably held in a direction along the longitudinal direction of the holding member.

  According to this configuration, since the plug member has a degree of freedom in the position of the plug body in the longitudinal direction with respect to the holding member, the plug body more reliably seals the injection port. For example, it is possible to suppress the entry of foreign matter into the liquid storage part due to a sealing error of the inlet and the evaporation or volatilization of the liquid from the liquid storage part to the outside.

  In the liquid storage unit, it is preferable that the liquid storage unit or the housing includes a regulation unit that regulates a sliding range of the holding member by contacting the holding member.

  According to this configuration, when the plug member is moved along the guide portion, the plug member can be prevented from falling off from the liquid storage portion or the housing. Therefore, it is possible to avoid a situation in which the liquid adheres to the place where the plug member is dropped.

  In the liquid storage unit, the holding member includes a through hole into which at least a part of the plug body is inserted, and an opening on the opposite side of the through hole to the plug body is covered with a covering member, and the covering member is It is preferable that the liquid storage unit is provided corresponding to the color of the liquid stored in the liquid storage unit.

  According to this configuration, the covering member serves as both the blinding of the through hole in the holding member and the color display. Therefore, the appearance of the plug member is good, and the user can check the color by looking at the cover member of the plug member, so that it is possible to reduce injection mistakes for injecting the wrong color liquid into the liquid storage portion.

A liquid ejecting apparatus that solves the above problem includes the liquid accommodating unit and a liquid ejecting section that ejects the liquid supplied from the liquid accommodating portion of the liquid accommodating unit.
According to this configuration, since the liquid ejecting apparatus includes the liquid storage unit, the same effect as that of the liquid storage unit can be obtained.

FIG. 3 is a perspective view illustrating a multifunction machine including the liquid ejecting apparatus according to the first embodiment. FIG. 3 is a perspective view showing the image reading apparatus and the multifunction machine with a cover opened. The perspective view which shows the liquid storage unit in the state which opened the cover. The perspective view which shows the liquid storage unit in the state which removed the upper housing. The partial perspective view which shows a liquid accommodating part. The perspective view which shows a part of housing where the stopper member was attached. The principal part perspective view which shows a liquid accommodating part and a plug member. The fragmentary sectional side view which shows the stopper member in the state which sealed the injection port. The perspective view explaining the connection structure of a holding member and a stopper main body. Similarly perspective view. Similarly perspective view. The perspective view explaining the other closure structure of a holding member and a stopper main body. The perspective view explaining the other closure structure of FIG. 12 with a holding member and a stopper main body different. The perspective view which shows the some plug member to which the cover member was attached. The disassembled perspective view which shows the attachment structure of a covering member. The perspective view which shows the some stopper member to which the cover member different from FIG. 14 was attached. The disassembled perspective view which shows the attachment structure of the cover member different from FIG. The sectional side view which shows the control structure in the open position of a stopper member. The sectional side view which shows the control structure in the open position of a plug member with a structure without a cover. The perspective view which shows a part of housing in which the plug member in 2nd Embodiment was attached. The top view which shows a stopper member. Sectional drawing cut | disconnected by F22-F22 line | wire in FIG. Sectional drawing cut | disconnected by the F23-F23 line | wire in FIG. The sectional side view which shows the liquid storage unit of the example of a change which is not provided with the positioning guide part. The sectional side view which shows the plug member of the example of a change provided with the covering member. The typical side sectional view showing the liquid storage unit in a 3rd embodiment. The schematic side view which shows the stopper member of the example provided with the biasing member. The typical side sectional view showing other composition of a liquid storage unit. The fragmentary perspective view which shows a part of liquid storage unit in 4th Embodiment. Sectional drawing cut | disconnected by the F30-F30 line | wire in FIG. Sectional drawing cut | disconnected by the F31-F31 line | wire in FIG. The perspective view which shows the liquid storage unit in the example of a change. The perspective view which shows the liquid storage unit in the example of a change different from FIG. The sectional side view which shows the example of a change of the connection structure of a holding member and a stopper main body. FIG. 34 is a schematic side cross-sectional view showing a liquid storage unit in a modified example different from FIG. FIG. 36 is a schematic side sectional view showing a liquid storage unit in a modified example different from FIG.

  Hereinafter, a multifunction peripheral including a liquid ejecting apparatus (for example, a printing apparatus) will be described with reference to the drawings. Note that the liquid ejecting apparatus of the present embodiment is configured by an ink jet printer that performs printing by ejecting, for example, a liquid made of ink or the like onto a medium made of paper or the like. The liquid ejecting apparatus will be described as an example of a serial printer that performs printing by moving a liquid ejecting unit in a scanning direction X (hereinafter also referred to as a width direction X) in which a printing method intersects a medium transport direction Y.

  As shown in FIG. 1, the multifunction machine 11 includes a liquid ejecting apparatus 12 that ejects liquid and an image reading apparatus 13 having a reading function. The liquid ejecting apparatus 12 includes a rectangular parallelepiped housing 14, and an image reading device 13 is disposed above the housing 14.

  The housing 14 is provided with an operation panel unit 15. The operation panel unit 15 includes, for example, an operation unit 16 including a power button 16a and an operation button 16b, and a display unit 17 including a touch panel type liquid crystal display screen.

  In addition, a medium accommodation cassette 19 and a discharge port 20 for discharging the printed medium M are provided on the back side of the front cover 18 provided in the lower portion of the front surface of the housing 14 so as to be openable and closable around the lower end. ing. The medium M fed from the medium accommodating cassette 19 is reversed at the back side position and then conveyed in the conveyance direction Y along a predetermined conveyance path.

  As shown in FIG. 1, a liquid ejecting unit 21 that ejects liquid onto the medium M transported in the transport direction Y is provided in the housing 14. For example, printing is performed by a liquid ejecting operation in which the liquid ejecting unit 21 ejects liquid toward the medium M at a midway position in the transport path of the medium M, and the printed medium M is discharged as shown by a two-dot chain line in FIG. It is discharged from the outlet 20. The discharged medium M is stacked on a slide-type stacker (discharge tray) (not shown) that extends forward from the housing 14 to the downstream side in the transport direction before starting printing. In this example in which the liquid ejecting apparatus 12 is a serial printer, the liquid ejecting unit 21 includes a carriage 22 that can reciprocate in a scanning direction X that intersects the transport direction Y. The liquid ejecting unit 21 has a nozzle (not shown) capable of ejecting liquid to a portion facing the conveyance path of the medium M. In the example in which the liquid ejecting apparatus 12 is a line printer, the liquid ejecting unit 21 has a length that allows the liquid to be ejected all over the liquid ejecting region across the width direction X intersecting the transport direction Y. It has a shape.

  As shown in FIG. 1, the liquid ejecting apparatus 12 includes a liquid storage unit 30 that supplies a liquid to the liquid ejecting unit 21. In this example, the liquid storage unit 30 is disposed at one end of both ends in the width direction X of the housing 14. A communication unit 23 having communication connection portions 23a and 23b is disposed at one end (the other) of both end portions in the width direction X of the casing 14, and the liquid storage unit 30 is connected to the communication unit 23 in the width direction X. It is arrange | positioned at the one edge part used as the other side. In the example shown in FIG. 1, the liquid storage unit 30 is in a state in which the side is covered with a case portion 31 that constitutes a part of the casing 14 (apparatus exterior), and an upper opening of the case portion 31 is located above the liquid storage unit 30. A cover 32 is provided. The details of the liquid storage unit 30 will be described later.

  Further, the image reading device 13 shown in FIG. 1 is placed on a document table made up of an openable and closable document cover 13a located at an upper portion thereof and a glass plate (not shown) covered with the document cover 13a in a closed state. An image scanner (both not shown) capable of reading an image of a document from below the glass plate is provided. The image reading device 13 can be opened and closed with respect to the housing 14 at a closed position shown in FIG. 1 and an open position shown in FIG. For example, when the inside of the liquid ejecting apparatus 12 is maintained for the purpose of eliminating a medium jam or the like, the image reading apparatus 13 is moved from the closed position to the opened position, so that the inside of the housing 14 is exposed. Further, when replenishing the liquid into the liquid storage unit 30, for example, the cover 32 is opened, but in the liquid ejecting apparatus 12 of this example, the image reading device 13 in the closed position is opened and closed. Exists on the moving path between. Therefore, the cover 32 is moved from the closed position shown in FIG. 1 to the open position shown in FIG. 2 under the state where the image reading device 13 is arranged at the open position. In FIG. 2, the liquid ejecting unit 21 disposed in the standby position illustrated in FIG. 1 when the image reading device 13 is disposed in the open position is disposed in the middle of the movement path for convenience of explanation. Yes. Alternatively, the cover 32 may be eliminated and a part of the image reading device 13 may cover the upper opening of the liquid storage unit 30 or the upper opening of the liquid storage unit 30 may be open.

  As shown in FIG. 2, when the cover 32 of the liquid storage unit 30 is opened from the closed position to an open position with an opening angle in the range of 90 to 170 degrees, for example, further movement in the opening direction is restricted. The liquid storage unit 30 includes a liquid storage unit 40 that stores a liquid. Inside the case portion 31, the same number of liquid storage portions 40 as the number of liquid types (for example, ink color types) that can be ejected by the liquid ejecting portion 21 are provided. Since the liquid ejecting unit 21 of this example can eject a plurality of types of liquids, the liquid storing unit 30 is provided with a plurality of liquid storing units 40 so that the plurality of types of liquids can be supplied.

  Further, the liquid storage unit 30 includes a plug member 50 that opens and closes the inlet 43 (see FIG. 5) of the liquid storage unit 40. In this example, the plug members 50 are individually provided in a plurality of liquid storage portions 40 arranged in the housing 33. The user individually opens the plug member 50 corresponding to the liquid container 40 to which the liquid is to be injected, and injects the liquid from the liquid bottle (not shown) into the liquid container 40. In addition, the liquid storage unit 30 is not limited to a configuration arranged in a part of the housing 14 illustrated in FIGS. 1 and 2, but is configured to be attached to an outer wall (for example, a side wall portion) of the housing 14 or the housing 14 and the liquid. A separate structure from the casing 14 connected through the supply tube may be used. In short, as long as the liquid can be supplied from the liquid storage unit 30 to the liquid ejecting unit 21 through the liquid supply path, the arrangement position of the liquid storage unit 30 may be inside or outside the housing 14.

  Next, a detailed configuration of the liquid storage unit will be described with reference to FIGS. FIG. 3 shows a state where the case portion 31 is removed from the housing 14 and the cover 32 is opened. As shown in FIG. 3, the liquid storage unit 30 includes a housing 33 in which the liquid storage unit 40 is disposed. A plurality of liquid storage portions 40 are arranged in the housing 33. The plurality of plug members 50 are rotatably supported on the upper surface portion of the housing 33 at positions corresponding to the plurality of liquid storage portions 40.

  As shown in FIG. 3, the housing 33 includes a bottomed cylindrical lower housing 34 and a cylindrical upper housing 35. 4 shows the liquid storage unit 30 with the upper housing 35 removed, FIG. 5 shows the upper part of the liquid storage portion 40, and FIG. 6 shows the upper housing 35 and the plug member 50.

  As shown in FIG. 4, the lower housing 34 includes a plurality of partition plates 36 that partition the arrangement regions of the plurality of liquid storage portions 40. The plurality of liquid storage portions 40 are stored in the respective arrangement regions partitioned in the width direction X by the partition plate 36. The liquid container 40 is positioned in the front-rear / up-down direction within the housing 33 by fitting at least a part of the side part 40 a, for example, a peripheral part 40 b shown in FIG. 5 into the opening 36 a of the partition plate 36.

  As shown in FIGS. 3 and 4, the liquid storage units 40 of this example are mixed in different sizes (capacities). In the liquid ejecting apparatus 12, for example, in the first liquid ejecting mode, the liquid ejecting unit 21 ejects the liquid (first type liquid) supplied from one liquid storage unit, and in the second liquid ejecting mode, the liquid ejecting unit. 21 injects the liquid (2nd type liquid) supplied from the some liquid accommodating part 40. FIG. For this reason, the liquid storage part 40 in which the first type liquid is stored has a relatively large capacity, and the liquid storage part 40 in which the second type liquid is stored has a relatively small capacity. In the example in which the liquid ejection operation is a printing operation, the first ejection mode corresponds to a gray scale printing mode, and the second ejection mode corresponds to a color printing mode. For example, the liquid storage portion 40 that stores black ink is wider than the plurality of other liquid storage portions 40.

  In the example shown in FIG. 4, the liquid container 40 with the maximum capacity is arranged at the end position in the arrangement direction (width direction X), and the position of the cylinder part 42 of the liquid container 40 with the maximum capacity is placed in the width direction X The plurality of plug members 50 are arranged at substantially equal intervals in the width direction X by being biased toward the arrangement position side of the liquid storage portion 40. Note that the sizes (capacities) of the plurality of liquid storage units 40 may all be the same or different, and in different cases, the combination of sizes may be changed as appropriate.

  As shown in FIG. 4, for example, the lower part of the liquid storage part 40 extends longer in the depth direction than the upper part. Therefore, the liquid storage unit 30 has a relatively large capacity of the liquid storage unit 40 while avoiding the arrangement area of the image reading device 13 and the like. As shown in FIGS. 4 and 5, the liquid container 40 protrudes from the container body 41 and one surface (upper surface in the example of the same figure) of the upper surface and the side surface in a direction intersecting the surface. And a cylinder portion 42 for liquid injection. As shown in FIG. 5, the liquid storage unit 40 includes an injection port 43 for injecting a liquid into the liquid storage unit 40. In the example of FIG. 5, the tip opening of the cylindrical portion 42 is an injection port 43. Further, at least a part of the front surface portion of the liquid storage portion 40 is a transparent portion (not shown) in which the height of the internal liquid level can be visually recognized from the outside. The shape of the liquid storage portion 40 is not limited to a shape in which the lower portion of the storage portion main body 41 is longer than the upper portion, and may have a shape in which the height of a part in the width direction is different from the other part or a rectangular parallelepiped shape And other quadrangular prisms, triangular prisms, and elliptical cylinders.

  As shown in FIG. 6, the upper housing 35 includes a rectangular cylindrical tubular housing 35A and a substantially plate-shaped lid portion 35B that covers at least a part of the upper opening of the cylindrical housing 35A. The plurality of plug members 50 are attached to the upper surface of the lid portion 35B of the housing 33 (specifically, the upper housing 35). Specifically, a plurality of shaft portions 37 are provided at the end of the upper surface of the housing 33 on the depth direction side. Each shaft portion 37 is installed in a state of being horizontally extended in the width direction X of the liquid storage portion 40 with both sides in the axial direction being sandwiched between support portions 37 a having a larger diameter portion than the shaft portion 37. . As shown in FIG. 6, the plug member 50 includes one holding member 51 and one plug body 52 for each corresponding liquid storage unit 40. A concave portion 33a having a width into which the plug body 52 can be inserted is formed on the upper surface portion of the housing 33 shown in FIG. In the state where the upper housing 35 is assembled to the lower housing 34 in which the plurality of liquid storage portions 40 are arranged, the cylindrical portion 42 of the liquid storage portion 40 has a circular hole (not shown) that opens at the bottom of the recess 33a. It penetrates and protrudes upward.

  As shown in FIG. 6, a window 33 b having a predetermined width and a width extending over the plurality of liquid storage portions 40 is provided on the front surface of the housing 33. The case part 31 has a transparent window part (not shown) at a part facing the window part 33b. Therefore, the user can visually recognize the height of the liquid level (liquid level) in the liquid storage unit 40 through the transparent window part of the case part 31 and the window part 33b. As shown in FIG. 6, a pair of hinge portions 38 connected to the cover 32 protrude from the end portion of the housing 33 in the depth direction.

  As shown in FIGS. 6 and 7, the plug member 50 has the above-described elastically deformable plug body 52 that covers the injection port 43 (see FIG. 5) and a holding member 51 that holds the plug body 52. Yes. The holding member 51 has a long shape that is long in one direction. As shown in FIG. 7, the holding member 51 includes one end 511 and the other end 512, and a side end 513 that intersects the one end 511 and the other end 512. In the example of the figure, the holding member 51 has a substantially rectangular plate shape that is long in one direction, and has one end 511 and the other end 512, and an end face that intersects both the end face of the one end 511 and the end face of the other end 512. And two side edges 513.

  As shown in FIG. 7, a holding portion 53 that is held by a user is provided at one end 511 of the holding member 51. The holding part 53 has a direction (front direction) from the other end 512 to the one end 511 of the holding member 51 and a direction (same surface) from the surface (rear surface) of the holding member 51 on the plug body 52 side to the opposite surface (front surface). It extends in the upward direction in the figure. The grip part 53 shown in FIG. 7 extends in an L shape in a side sectional view as an example. The other end 512 of the holding member 51 is provided with an engaging portion 54 that can engage with the shaft portion 37. The width of the engaging portion 54 is slightly shorter than the axial length of the shaft portion 37. Further, the engaging portion 54 has a C-shaped cross section in which a part of the ring is cut, and is engaged with the shaft portion 37 when the opening of the engaging portion 54 is pressed against the shaft portion 37.

  As shown in FIG. 7, the engaging portion 54 is sandwiched between the pair of support portions 37 a while being engaged with the shaft portion 37, and displacement of the plug member 50 in the width direction X is restricted. The For this reason, when the plug member 50 is moved from the open position to the closed position, the plug main body 52 is positioned in the width direction X with respect to the cylindrical portion 42. In FIG. 7, for convenience of explanation, there is a gap between the support portion 37a and the engagement portion 54. However, the gap is actually very small, or an axial deviation (not shown) that protrudes in the axial direction from at least one of the two. Since the prevention part is interposed between the two, the displacement of the plug member 50 in the width direction X is restricted. This is the same for the other embodiments.

  As shown in FIG. 7, the stopper main body 52 is disposed at a position between the holding portion 53 at one end and the engaging portion 54 at the other end in the holding member 51. Since the user can open and close the plug member 50 by grasping the grip portion 53 positioned on one end side of the holding member 51 with respect to the plug body 52 with the finger, the liquid of the plug body 52 is difficult to adhere to the finger. The plug member 50 is disposed in a direction in which the longitudinal direction of the holding member 51 coincides with the longitudinal direction (depth direction) of the surface of the liquid storage unit 40 where the injection port 43 (cylinder part 42) is provided.

  The holding member 51 shown in FIGS. 6 and 7 has higher rigidity than the plug body 52. The holding member 51 is made of a non-flexible member, and the plug body 52 is made of a flexible member. Examples of the material for the non-flexible member include plastic and metal. Moreover, rubber | gum, an elastomer, etc. are mentioned as a material of a flexible member. Further, the shaft portion 37, the housing 33, and the liquid storage portion 40 are made of an inflexible member. It is preferable that the material of the liquid container 40 is selected from materials that can exhibit compatibility with the characteristics of the liquid (for example, ink) to be stored and the functions required for the liquid container 40. The materials of the holding member 51, the shaft portion 37, and the housing 33 may be the same or different.

  Various connection structures can be used to connect the plug body 52 to the holding member 51 shown in FIG. 7, but in this example, a connection mechanism 60 is used in consideration of ease of assembly. As shown in FIGS. 7, 8, and 9, the holding member 51 has a through hole 51 a at a connection location of the plug body 52. In this example, at least a part of the plug body 52 is fitted into the through hole 51a. The plug body 52 includes a bottomed cylindrical plug portion 61, a pair of protrusions 62 (key portions) protruding on both sides in the radial direction of the plug portion 61, and an axial direction ( In the same figure, it has the fitting part 63 which protrudes upward). The fitting portion 63 includes a truncated cone-shaped retaining portion 63a at the tip.

  As shown in FIGS. 7 to 9, a pair of groove portions 64 (key groove portions) into which a pair of protrusions 62 can be inserted (inserted) are provided around the through hole 51 a on the back surface of the holding member 51. The pair of groove portions 64 have a groove passage that extends concentrically with the through-hole 51a, has one end opened, and the other end closed. The coupling mechanism 60 has a locking portion (not shown) that locks the pair of protrusions 62 when the pair of protrusions 62 are inserted into the pair of grooves 64 to the end.

  Next, an assembling method for connecting the plug body 52 to the holding member 51 will be described with reference to FIGS. First, as shown in FIG. 9, the fitting portion 63 of the plug body 52 is fitted into the through hole 51 a of the holding member 51 in a state where the pair of protrusions 62 are shifted in the axial rotation direction with respect to the pair of groove portions 64. Include. As a result, as shown in FIG. 10, the plug body 52 is attached to the holding member 51 in a state in which the stopper main body 52 is prevented from being detached from the through hole 51a by the retaining portion 63a and the base portion of the fitting portion 63 is loosely fitted in the through hole 51a. Temporarily connected. Next, the stopper body 52 is pivoted counterclockwise, and the pair of protrusions 62 are inserted into the pair of grooves 64. And as shown in FIG. 11, when a pair of protrusion 62 is inserted to the terminal end of a pair of groove part 64, both will be latched mutually. Thus, as shown in FIGS. 8 and 11, the plug body 52 is fixed to the holding member 51 by locking the key and the key groove.

  As shown in FIG. 8, the plug body 52 seals the injection port 43 in a liquid-tight state by fitting the plug portion 61 to the cylindrical portion 42. The plug portion 61 includes a guide surface 61a having an inner peripheral surface shape similar to the peripheral surface of the truncated cone that expands toward the distal end side. For this reason, even if the plug main body 52 is slightly displaced from the cylindrical portion 42 with respect to the cylindrical portion 42, the guide surface 61 a that contacts the cylindrical portion 42 is guided along the cylindrical portion 42, so that the mutual axial displacement is caused. It moves in the direction of decreasing, the plug portion 61 positioned by the movement fits into the cylindrical portion 42, and the injection port 43 is sealed. The plug structure in which the plug main body 52 plugs the cylindrical portion 42 is not limited to the external fitting, and can be changed to other appropriate plug structures.

  For example, the closure structure shown in FIGS. 12 and 13 can be employed. The plug main body 52 shown in FIG. The plug body 52 is made of a flexible member, and has a plug portion 52a in which a portion of the cylindrical portion 42 that comes into contact with the injection port 43 bulges into a hemispherical shape. As shown in FIG. 12, the injection port 43 is sealed in a liquid-tight state when the hemispherical plug portion 52 a comes into contact with the opening end of the cylindrical portion 42.

  Further, the plug body 52 shown in FIG. The plug body 52 is made of a flexible member and has a cylindrical or columnar plug portion 52a. The plug part 52a is fitted in the cylinder part 42, and the injection port 43 is sealed in a liquid-tight state. In the example of the plug member 50 shown in FIGS. 12 and 13, the plug body 52 is connected to the holding member 51 by the same connection mechanism 60 as in FIGS. 8 to 11. That is, the plug body 52 is fixed to the holding member 51 by locking the pair of protrusions 62 (keys) and the pair of grooves 64 (key grooves). In addition, in the connection mechanism 60 shown in FIGS. 8-13, it replaces with the fitting part 63 and is good also as a shaft part without the securing part 63a.

  In the example shown in FIGS. 8 to 13, a part of the plug body 52 (such as the fitting portion 63) is exposed from the opening of the through hole 51 a on the surface of the holding member 51. Therefore, as shown in FIGS. 14-17, it is preferable to employ | adopt the structure which hides the exposed structure in the through-hole 51a.

  In the example shown in FIG. 14, the opening on the side opposite to the plug body 52 side of the through hole 51 a in the holding member 51 (hereinafter, also referred to as “front side opening”) is covered with the covering member 65. The covering member 65 is provided corresponding to the type of liquid stored in the liquid storage unit 40, in this example, the color of the liquid. That is, at least a part of the surface (surface) opposite to the surface facing the through hole 51 a of the cover member 65 is in the liquid storage portion 40 that is closed by the plug member 50 provided with the cover member 65. The type of liquid to be stored, in this example, the color of the liquid is shown. Here, “showing color” means that part or all of the covering member 65 may be colored with the color of the liquid, or information indicating the color of the covering member 65 (for example, color name or product number (model number) ) Etc.) may be described, and both coloring and description of information indicating the color may be employed.

  In the example shown in FIG. 15, the covering member 65 includes a cap 66 having a shape (for example, a disk shape or a bottomed cylindrical shape) that can be fitted from the front opening of the through hole 51 a. For example, the cap 66 is colored in the same color as the color of the liquid stored in the corresponding liquid storage unit 40. Then, the cap 66 is fitted through the opening on the front side of the through hole 51 a, so that the opening is covered with the cap 66. Therefore, as shown in FIG. 15, even when a plurality of plug members 50 are arranged, the user recognizes the color of the liquid from at least one of the color indicated by the cap 66, that is, the coloration and the description of the information indicating the color. Therefore, it is difficult to make a mistake in the type (color) of the liquid injected into the liquid storage unit 40.

  The covering member 65 shown in FIG. 16 includes a label 67 that covers the opening on the front side of the through hole 51a. The label 67 indicates the type of liquid stored in the liquid storage unit 40 that is closed by the plug member 50 to which the label 67 is attached, in this example, the color of the liquid.

  As shown in FIG. 17, the label 67 is attached to the surface of the holding member 51 so as to cover the opening on the front side of the through hole 51 a. For this reason, as shown in FIG. 16, even when a plurality of plug members 50 are arranged, the user can at least describe the color indicated by the label 67 attached to the plug member 50, that is, the coloration and the description of the information indicating the color. Since the color of the liquid can be recognized from one side, it is difficult to make a mistake in the type (color) of the liquid injected into the liquid container 40.

  Moreover, as shown in FIG. 18, it is preferable to restrict the rotation range of the plug member 50. In the example shown in FIG. 18, the rotation range of the plug member 50 is restricted by the plug member 50 being in contact with the cover 32 in the open position. Inside the cover 32, there is a restricting portion 39 that restricts the rotation range of the holding member 51 by contacting the holding member 51 when the plug member 50 is moved to the open position with the cover 32 in the open position. Is provided. The cover 32 has a thin portion 32a on the side closer to the rotational radius direction from the connecting portion with the hinge portion 38 and a thick portion 32b on the far side, and the thin portion on the inner side of the cover 32. A bent portion located at the boundary between 32 a and the thick portion 32 b functions as the restricting portion 39. For example, when the cover 32 is in contact with the restricting portion 14a of the housing 14 at the open position, the rotation range is restricted and the cover 32 is held at a predetermined opening angle. When the stopper member 50 is opened in the state where the cover 32 is in the open position, the holding member 51 comes into contact with the restricting portion 39, so that the movement of the stopper member 50 in the further opening direction is restricted and the stopper member 50 is brought into the open position. Retained.

  The opening angle in the open position with the closed position of the plug member 50 as a reference (0 degree) is equal to or greater than the minimum angle at which the plug member 50 does not fall from the open position to the closed position due to its own weight, and the user closes the plug member 50 in the open position. Therefore, the predetermined angle is set within the range of the maximum angle or less that can secure a gap (for example, 5 mm or more) necessary for hooking the tip of the grip portion 53 with a finger. The opening angle of the plug member 50 is preferably a predetermined angle within a range of 95 to 170 degrees, for example. In particular, the opening angle is more preferably 100 degrees or more in order to more reliably avoid the plug member 50 in the open position from falling to the closed position by its own weight. Further, the larger the opening angle of the plug member 50, the easier it is for the finger carried to the grip portion 53 of the plug member 50 in the open position to touch the bottom of the plug body 52 when the plug member 50 is closed. In this respect, the opening angle of the plug member 50 is preferably 150 degrees or less. Therefore, it is more preferable that the opening angle of the plug member 50 is a predetermined angle within a range of 100 to 150 degrees. In the example of FIG. 18, the grip portion 53 is in contact with the restriction portion 39, but other portions of the holding member 51 may be in contact with the restriction portion 39. Further, the position of the restricting portion 39 in the cover 32 can be changed as appropriate in the positional relationship with the plug member 50.

  Further, as shown in FIG. 19, a configuration without the cover 32 can be implemented. As shown in the figure, the housing 33 is provided with a restricting portion 33c for restricting the rotation range of the holding member 51 by contacting the holding member 51 when the plug member 50 is opened. The opening angle of the plug member 50 is preferably in the range of 95 to 170 degrees, for example, and more preferably in the range of 100 to 150 degrees. In the configuration provided with the cover 32, the rotation range of the plug member 50 may be restricted by the holding member 51 coming into contact with the restricting portion 33c.

Next, the operation of the liquid storage unit 30 and the liquid ejecting apparatus 12 will be described.
In the liquid ejecting apparatus 12, the medium M fed from the medium accommodating cassette 19 is transported in the transport direction Y, and the liquid ejecting unit 21 ejects liquid onto the medium M in the middle of the transport, so that the medium M is ejected onto the medium M. For example, an image or the like is printed. A control unit (not shown) of the liquid ejecting apparatus 12 manages the current liquid amount for each liquid storage unit 40 by subtracting the consumed liquid amount from the previous liquid amount managed for each liquid storage unit 40. If there is a liquid container 40 whose liquid volume falls below a lower limit (for example, near-end) threshold, this is displayed on the display unit 17 and a request for injecting liquid is notified to the user. The user performs a liquid injection operation of injecting a liquid into the liquid storage unit 40 specified from the display content of the display unit 17.

  When injecting the liquid into the liquid storage unit 40, when the user first opens the image reading device 13 and then opens the cover 32, the plurality of plug members 50 for each liquid storage unit 40 are exposed. In the example in which the cover member 65 of the holding member 51 of the stopper member 50 is provided corresponding to the color of the liquid (FIGS. 14 to 17), for example, the color indicated by the cover member 65, that is, the same color as the color of the liquid The plug member 50 corresponding to the liquid container 40 into which the liquid is to be injected can be specified from at least one of the displayed color and the description of the information indicating the color. Therefore, the user selects an appropriate plug member 50 from among the plurality of plug members 50 and opens it. At this time, since the user can grasp the grip portion 53 with his / her finger and open the plug member 50, the opening operation is easy, and the grip portion 53 is shifted to one end side of the holding member 51 from the plug body 52. Therefore, the liquid of the plug main body 52 hardly adheres to the finger that grips the grip portion 53. Then, the user who has moved the appropriate plug member 50 to the open position where the injection port 43 opens can inject the liquid from the injection port 43 into the liquid storage unit 40 as an appropriate injection destination.

  During the liquid injection, the user visually recognizes the height (liquid level) of the liquid surface in the liquid storage unit 40 from the outside of the liquid storage unit 30 and injects the liquid until reaching the upper limit position, for example. When the liquid has been injected, the stopper member 50 is closed. At this time, the plug member 50 in the open position during the liquid injection is in contact with the restricting portion 39 or 33c and a predetermined opening angle (for example, a predetermined angle in the range of 90 to 170 degrees) in which further movement is restricted, preferably Is held at a predetermined opening angle within a range of 95 to 150 degrees (see FIGS. 18 and 19). Therefore, it is difficult for the finger carried to the grip portion 53 to touch the bottom of the plug body 52 when the plug member 50 held at the opening angle is closed, and the liquid in the plug body 52 is also applied to the finger or the like when the plug member 50 is closed. Hard to adhere. In addition, since the holding member 51 of the plug member 50 is in a state of standing obliquely at a predetermined opening angle, the user mistakenly places the hand on the plug member 50 as compared with a case where the holding member 51 is tilted at an opening angle of about 180 degrees. It is easy to avoid a situation in which the plug member 50 is damaged by placing the. In particular, in the configuration in which the plug member 50 is in contact with the regulating portion 39 inside the cover 32 and the rotation range thereof is regulated, the opening angle can be easily set within a more preferable range of 100 to 150 degrees, and the liquid in the plug body 52 can be set. In addition to being more difficult to adhere to a finger or the like, the frequency of breakage of the plug member 50 can be further reduced.

  Further, the holding member 51 has higher rigidity than the elastically deformable plug body 52, and the holding member 51 is not easily bent when the plug member 50 is opened, so that the liquid of the plug body 52 adheres to a finger or the like. Hateful. For example, when the rigidity of the holding member is equal to or less than the rigidity of the elastically deformable plug body, if the holding member 51 is bent and the plug body 52 swings when the plug member 50 is opened and closed, the plug of the user's finger or the like is plugged. The liquid of the main body 52 tends to adhere. However, in the present embodiment, the holding member 51 having higher rigidity than the plug body 52 is not easily bent during the opening / closing operation of the plug member 50, and the plug body 52 is less likely to be shaken. In addition, it is easy to position the plug body 52 with respect to the inlet 43. In addition, when the plug body 52 has a guide surface 61 a (see FIG. 8) at the distal end corresponding to the tube portion 42, the plug body 52 can be tightly closed even if the plug body 52 slightly deviates from the tube portion 42. At this time, since the plug body 52 is made of an elastically deformable member, the inlet 43 can be tightly sealed by the plug body 52.

  Further, since the plug member 50 is provided so as to be rotatable with respect to the housing 33 or the liquid storage portion 40 by the engagement of the shaft portion 37 and the engagement portion 54, the other end of the holding member 51 (for example, the grip portion 53). ), The force required for opening and closing the plug member 50 can be reduced by the lever principle. Therefore, the plug member 50 can be easily opened and closed with a relatively small force.

  Further, in the plug member 50 shown in FIGS. 7 to 13, a coupling mechanism that engages a pair of protrusions 62 (key part) and a pair of groove parts 64 (key groove part) to connect the holding member 51 and the plug body 52. 60 is adopted. For this reason, when assembling the plug main body 52 to the holding member 51 at the manufacturing factory, after fitting the fitting portion 63 of the plug main body 52 into the through hole 51a of the holding member 51, the plug main body 52 is pivoted. The pair of protrusions 62 are locked in a state where they are inserted into the pair of grooves 64. As a result, it is possible to relatively easily connect the holding member 51 and the plug body 52 made of different members having different rigidity. Therefore, the plug member 50 can be manufactured relatively easily.

According to the first embodiment, the following effects can be obtained.
(1) The liquid storage unit 30 that supplies a liquid to the liquid ejection unit 21 included in the liquid ejection device 12 includes a liquid storage unit 40 that stores a liquid, a housing 33 that arranges the liquid storage unit 40, and a liquid storage unit. The injection port 43 for injecting into the injection port 40 and the plug member 50 for opening and closing the injection port 43 are provided. The plug member 50 includes an elastically deformable plug body 52 that covers the injection port 43 and a holding member 51 that is higher in rigidity than the plug body 52 and holds the plug body 52. Therefore, when the user opens and closes the plug member 50, such as when performing a liquid injection operation for injecting liquid into the liquid storage unit 40, the frequency with which the liquid in the plug main body 52 adheres to the user's finger or the like can be reduced.

  (2) The holding member 51 includes one end 511 and the other end 512, and a side end 513 intersecting the one end 511 and the other end 512, and a grip portion 53 for opening and closing the injection port 43 is provided at the one end 511. It has been. Therefore, since the user can open and close the plug member 50 by holding the grip portion 53 with a finger, the opening and closing operation of the plug member 50 is facilitated, and the frequency with which the liquid in the plug main body 52 adheres to the finger or the like at the time of opening and closing. It can be further reduced.

  (3) The plug body 52 is disposed between the holding portion 53 and the other end 512 of the holding member 51. Therefore, when the user opens / closes the plug member 50, the finger or the like accidentally touches the portion of the plug body 52 on the side where the inlet 43 is sealed, and the liquid in the plug body 52 adheres to the user's finger or the like. It becomes easier to avoid.

  (4) The liquid storage unit 30 includes a plurality of plug members 50 corresponding to the plurality of liquid storage portions 40, respectively. The plurality of plug members 50 have one plug body 52 for each corresponding liquid storage portion 40. Since the plug member 50 is individually opened and closed for each liquid storage unit 40, the liquid in the plug body 52 is more easily applied to the user's finger when opening and closing the plug member 50, compared to a configuration in which a plurality of plug bodies are integrally provided. In addition, the frequency of adhering to the liquid can be further reduced, and evaporation or volatilization of the liquid from the liquid container 40 other than the liquid container 40 into which the liquid is injected can be suppressed.

  (5) The liquid storage unit 30 includes a shaft portion 37 for rotating the plug member 50 and an engagement portion 54 that engages with the shaft portion 37. One of the shaft portion 37 and the engaging portion 54 is provided on the housing 33, and the other is provided on the plug member 50. Therefore, when the stopper member 50 is opened and closed by holding the other end of the holding member 51, the force required for opening and closing the stopper member 50 can be reduced by the lever principle.

  (6) The cover 32 or the housing 33 has a restricting portion 39 or 33 c that restricts the rotation range of the holding member 51 by contacting the holding member 51 in a state in which the holding member 51 is rotated in the direction of opening the injection port 43. For example, compared to a configuration in which the rotation range of the holding member 51 is not restricted and the plug member 50 is disposed at the open position in a tilted posture in which the plug member 50 is rotated by about 180 degrees, the liquid in the plug main body 52 is more liquid when the plug member 50 is opened and closed. Hard to adhere to user's finger etc. Therefore, the frequency with which the liquid of the plug body 52 adheres to the user's finger or the like can be further reduced. In addition, the opening / closing operation amount of the plug member 50 is relatively small, and the liquid injection operation is easy. Furthermore, when the plug member is configured to take a posture in which the plug member is tilted at the open position, there is a concern that the user may accidentally place his / her hand on the plug member and damage the plug member. However, since the plug member 50 of this example is held in an obliquely raised posture at the open position (for example, a posture within the range of 95 to 170 degrees in the opening angle), the user accidentally puts his hand on the plug member 50. There is little worry to put. Therefore, the situation where a user accidentally breaks the plug member 50 can be reduced.

  (7) The holding member 51 is provided with a covering member 65 corresponding to the color of the liquid stored in the liquid storage unit 40 while covering the front opening of the through hole 51a. Therefore, since the covering member 65 serves as both the blinding of the through hole 51a of the holding member 51 and the color display, the appearance of the plug member 50 is good, and the user can check the color of the liquid by looking at the covering member 65. The injection mistake which inject | pours the liquid of the wrong color into the part 40 can be reduced.

  (8) The liquid ejecting apparatus 12 includes the liquid containing unit 30 and the liquid ejecting unit 21 that ejects the liquid supplied from the liquid containing unit 40 in the liquid containing unit 30. And according to this liquid ejecting apparatus 12, when the liquid ejecting part 21 consumes the liquid, and it is necessary to inject the liquid into the liquid accommodating part 40, various effects that the liquid accommodating unit 30 has are similarly obtained. Can do.

(Second Embodiment)
Next, a second embodiment of the liquid storage unit will be described with reference to the drawings. The same reference numerals are given to the same components as those in the first embodiment, and the description thereof is omitted. Hereinafter, the second embodiment will be described focusing on the configuration different from the first embodiment.

  As shown in FIG. 20, the liquid storage unit 30 allows the plug member 50 to be injected into the injection port by inserting the convex portion 71 into the concave portion 72 in a state where the injection port 43 (see FIG. 22) is closed by the plug member 50. 43 includes a positioning guide portion 70 including a convex portion 71 and a concave portion 72 for positioning and guiding with respect to 43. One of the convex portion 71 and the concave portion 72 can be provided on the holding member 51, and the other can be provided on the liquid storage portion 40 or the housing 33. In the example shown in FIGS. 20 to 23, the convex portion 71 is provided in the holding member 51 and the concave portion 72 is provided in the housing 33. Specifically, as shown in FIG. 20, the holding member 51 is provided with a convex portion 71 on the surface facing the housing 33, and the convex portion 71 is provided on the upper surface of the housing 33 when the plug member 50 is disposed at the closed position. Is provided with a recess 72 into which can be inserted. As shown in FIGS. 20 and 21, the holding member 51 of the plug member 50 has a long shape that is long in one direction as in the first embodiment.

  As shown in FIG. 22, the convex portion 71 has a tapered guide surface 71 a whose width in the longitudinal direction of the holding member 51 becomes narrower toward the distal end side. For this reason, the plug member 50 is positioned and guided in the longitudinal direction in the process in which the convex portion 71 is inserted into the concave portion 72 when the plug member 50 is closed. Further, as shown in FIG. 23, the convex portion 71 has a tapered guide surface 71b whose width in the width direction X becomes narrower toward the tip side. For this reason, the plug member 50 is positioned and guided in the width direction X in the process in which the convex portion 71 is inserted into the concave portion 72 when the plug member 50 is closed. Therefore, when closing the plug member 50, the plug body 52 held by the holding member 51 is positioned with respect to the tube portion 42 of the liquid storage portion 40, and the plug body 52 is more reliably fixed with respect to the tube portion 42. Can be fitted. In addition, it replaces with the convex part 71 and the recessed part 72 may have a taper-shaped guide surface in the inner wall surface. Further, the positioning guide unit 70 only needs to include at least one of a guide surface that guides the holding member 51 in the longitudinal direction and a guide surface that guides the holding member 51 in the width direction X. For example, the positioning guide unit 70 includes only one guide surface. Also good.

  By the way, although the plug body 52 is positioned and guided by the positioning guide portion 70 described above, if the assembly position of the holding member 51 or the assembly position of the plug body 52 with respect to the holding member 51 is shifted, the positioning guide portion 70 positions the plug body 52. Even if guided, the position of the plug body 52 relative to the inlet 43 may be shifted. Therefore, in the plug member 50 of this embodiment, the plug body 52 is held so as to be movable with respect to the holding member 51 in a direction along the longitudinal direction thereof.

  As shown in FIGS. 21 and 22, the plug body 52 has a shaft portion 55 that protrudes from a portion opposite to the portion that seals the injection port 43. The shaft portion 55 has a pair of guide shafts 55a (see FIG. 21) protruding on both sides in the width direction X. The holding member 51 includes a rectangular guide hole 51c (through hole) capable of guiding the shaft portion 55 in the longitudinal direction of the holding member 51 in a state where the shaft portion 55 is inserted, and both sides of the guide hole 51c in the width direction X. A pair of recesses 51d extending along the longitudinal direction. The plug body 52 is assembled in such a manner that the shaft portion 55 is inserted into the guide hole 51c and the pair of guide shafts 55a are placed on the bottom surfaces of the pair of recesses 51d. For this reason, since the axial part 55 can move to the longitudinal direction along the guide hole 51c, the stopper main body 52 has the freedom degree of a position in the longitudinal direction with respect to the holding member 51. Furthermore, in this example, the width of the guide hole 51 c is slightly wider than the outer diameter of the shaft portion 55, and the plug body 52 can move in the width direction X with respect to the holding member 51. Therefore, the plug body 52 has a degree of freedom in position in the width direction X with respect to the holding member 51.

  When closing the plug member 50, the holding member 51 is positioned in the longitudinal direction and the width direction X by inserting the convex portion 71 into the concave portion 72. At this time, since the guide surface 61a of the plug main body 52 contacts the cylindrical portion 42 even if the plug main body 52 is displaced to the maximum with respect to the cylindrical portion 42, the plug main body 52 moves relative to the cylindrical portion 42 as it moves in the closing direction. The holding member 51 is externally fitted to the cylindrical portion 42 while being positioned and guided in the longitudinal direction and the width direction X.

  Thus, when closing the plug member 50, the plug member 50 can be aligned in at least one of the longitudinal direction and the width direction X by inserting the convex portion 71 into the concave portion 72. In addition, since the plug body 52 provided so as to be movable with respect to the holding member 51 has a degree of freedom in position with respect to the injection port 43, the injection port 43 can be sealed more reliably. Therefore, it is possible to suppress the entry of foreign matter into the liquid storage unit 40 due to a sealing error of the injection port 43 and the evaporation or volatilization of the liquid from the liquid storage unit 40 to the outside.

  In addition, as shown in FIG. 24, the structure which eliminated the positioning guide part 70 may be sufficient. Even in this configuration, the plug body 52 is provided to be movable relative to the holding member 51 along the guide hole 51c, and has a degree of freedom in position in at least one of the longitudinal direction and the width direction X of the holding member 51. For this reason, the stopper main body 52 is positioned and guided with relative movement with respect to the holding member 51 through the engagement between the guide surface 61 a and the cylindrical portion 42, and seals the inlet 43 more reliably.

  Further, as shown in FIG. 25, the guide hole 51 c of the holding member 51 may be covered with a covering member 65. In the example of the figure, a cap 66 is fitted into the guide hole 51c as an example of the covering member 65. By adopting a configuration in which the shaft portion 55 abuts against the inner wall surface 65a of the cap 66, the movement range of the plug body 52 can be regulated while securing the insertion allowance of the cap 66. In this example, the movable range of the plug body 52 defined by the inner wall surface 65a of the cap 66 fitted into the guide hole 51c is the same as that shown in FIGS. Note that a label 67 shown in FIGS. 16 and 17 may be attached to the holding member 51 as the covering member 65 instead of the cap 66.

According to the second embodiment, the same effects as the effects (1) to (8) in the first embodiment can be obtained, and the following effects can be obtained.
(9) The holding member has an elongated shape that is long in one direction, and holds the plug body 52 movably in a direction along the longitudinal direction of the holding member 51. Therefore, since the plug member 50 has a degree of freedom in the position of the plug body 52 in the longitudinal direction with respect to the holding member 51, the plug member 52 is positioned with respect to the injection port when the plug body 52 fits or hits the injection port 43. Accordingly, the injection port 43 is securely sealed. Therefore, the frequency of occurrence of sealing errors at the inlet 43 can be reduced. For example, it is possible to suppress contamination of foreign matter inside the liquid storage unit 40 and evaporation or volatilization of the liquid from the liquid storage unit 40 due to a sealing error of the injection port 43.

  (10) In the liquid storage unit 30, the convex portion 71 that positions and guides the plug member 50 with respect to the inlet 43 when the convex portion 71 is inserted into the concave portion 72 in a state where the stopper member 50 closes the inlet 43. And a positioning guide portion 70 including a recess 72. One of the convex portion 71 and the concave portion 72 is provided on the holding member 51, and the other is provided on the liquid storage portion 40 or the housing 33. Therefore, when the plug member 50 is moved from the open position to the closed position, the plug member 50 can be aligned by inserting the convex portion 71 into the concave portion 72. For this reason, the plug body 52 securely seals the injection port 43. Therefore, it is possible to suppress foreign matter mixing into the liquid container 40 and evaporation or volatilization of the liquid from the liquid container due to a sealing error of the injection port 43.

(Third embodiment)
Next, a third embodiment of the liquid storage unit will be described with reference to the drawings. Hereinafter, the third embodiment will be described focusing on the configuration different from the first embodiment.

  As shown in FIG. 26, the holding member 51 of the plug member 50 is configured to be bendable. Specifically, the holding member 51 includes a first member 81 that is located on one end side and provided with the plug body 52, a second member 82 that is located on the other end side of the first member 81, and the first member 81. And a rotation portion 83 that is provided between the second member 82 and rotates the first member 81 relative to the second member 82.

  As shown in FIG. 26, in the state where the plug member 50 is in the open position, the rotating portion 83 moves the first member 81 with respect to the second member 82 toward the side where the plug body 52 approaches the injection port 43 by a predetermined angle. The holding member 51 is turned to a bent posture shown by a solid line in FIG. Further, in the state where the plug member 50 is in the closed position, the rotating portion 83 arranges the first member 81 and the second member 82 in a straight line, and the holding member 51 is shown in a straight posture shown by a two-dot chain line in FIG. And As shown in FIG. 26, when the first member 81 is bent toward the inlet 43 by an angle θ with respect to the axis indicated by the alternate long and short dash line of the second member 82, further rotation (bending) is not shown. Regulated by the regulation department. Further, from the state of the straight posture shown by a two-dot chain line in the same figure, the further rotation (bending) of the first member 81 toward the side away from the inlet 43 with respect to the second member 82 is not shown. Regulated by. Therefore, the first member 81 can be bent with respect to the second member 82 within an angle range between a straight posture shown by a two-dot chain line in the drawing and a bending posture shown by a solid line in the drawing. In the state where the holding member 51 is in the open position indicated by the solid line in FIG. 26, the second member 82 comes into contact with the restricting portion provided in the cover 32 or the housing 33, so that the predetermined opening angle shown in FIG. It is held in an oblique posture.

  When the plug member 50 is in the closed position, the first member 81 and the second member 82 take a straight posture indicated by a two-dot chain line in FIG. 26, and the plug body 52 seals the injection port 43. The first member 81 rotates (bends) with respect to the second member 82 by the force applied from the finger in the process in which the user grips one end of the holding member 51 with the finger and moves the plug member 50 from the closed position to the open position. Then, the holding member 51 changes from a straight posture to a bent posture. In this bent posture, the plug body 52 is inclined downward, so that the liquid of the plug body 52 is difficult to adhere to the user's finger or the like.

  Further, as in the example shown in FIG. 27, the urging member 84 that urges the first member 81 with respect to the second member 82 in the direction in which the holding member 51 is bent from the straight posture to the bending posture is provided. It is preferable to provide in. According to this configuration, when the user opens the plug member 50, the holding member 51 is held by the urging force of the urging member 84 without adjusting the force applied to bend the holding member 51 from the straight posture to the bending posture. The member 51 autonomously changes from a straight posture to a bent posture. As a result, when the stopper member 50 is opened and closed, the liquid in the stopper main body 52 is less likely to adhere to a finger or the like. In addition to the torsion coil spring shown in FIG. 27, a coil spring, rubber, or the like can be used as the urging member 84. Further, the urging member 84 is not limited to the configuration interposed between the first member 81 and the second member 82, but between the first member 81 and the housing 33, or between the first member 81 and the liquid storage portion. 40 may be interposed.

  In this case, as shown in FIG. 28, the liquid storage unit 30 is provided with a cover 32 that opens and closes in a closed state that covers the plug member 50 and an open state that does not cover the plug member 50. preferable. In the closed state in which the plug member 50 seals the inlet 43, the holding member 51 is held in a straight posture by contacting at least one of the first member 81 and the second member 82. Is provided. In the example shown in FIG. 28, the posture holding mechanism 85 includes one or a plurality of contact portions as at least a part of its constituent elements.

  Specifically, as shown in FIG. 28, the posture holding mechanism 85 is an example of a contact portion, and is a surface (back surface) on the side facing the inlet 43 of the first member 81 when the plug member 50 is in the closed position. And a second rib 87 in contact with a surface (front surface) opposite to the back surface of the second member 82 in the closed state of the cover 32. That is, the posture holding mechanism 85 includes a first rib 86 that contacts the first member 81 from below in the vertical direction, and a second rib 87 that contacts the second member 82 from above in the vertical direction. In the example shown in FIG. 28, the first rib 86 is provided in the liquid storage unit 40, and the second rib 87 is provided in the cover 32. The posture holding mechanism 85 may be configured by one abutting portion (for example, a rib) that contacts the surface of the first member 81 on the side opposite to the inlet 43 side, or one second rib 87. It is also possible to have a configuration in which only In FIG. 28, the first rib 86 may be provided on the cover 32 so as to be in contact with the surface of the first member 81. In addition, the contact portion that contacts at least one of the first member 81 and the second member 82 is not limited to a rib, but a protrusion other than the rib, a surface portion on the inner side of the cover 32, and one other than the rib of the liquid storage portion 40. It may be a part, a rib of the housing 33 or a part other than the rib.

  Since the plug member 50 can be held in a straight posture when the cover 32 is closed in this way, the plug member 50 can be kept closed against the urging force of the urging member 84. For example, after the cover 32 is closed, it is possible to avoid a situation where the plug member 50 is displaced in the opening direction by the biasing force of the biasing member 84 and the sealing of the injection port 43 is impaired. Although omitted in the examples of FIGS. 26 to 28, it is preferable to provide a holding portion 53 similar to the first embodiment at one end of the holding member 51. Further, when the stopper main body 52 is held with respect to the holding member 51 by the same connection structure as that of the first embodiment, the covering member 65 that covers the opening on the front side of the through hole 51 a is formed on the first member 81 constituting the holding member 51. It is preferable to provide it.

According to the third embodiment, the same effects as those of the first embodiment (1) to (8) can be obtained, and the following effects can be further obtained.
(11) The holding member 51 is located on one end side, the first member 81 provided with the plug body 52, the second member 82 located on the other end side relative to the first member 81, and the first member 81. And a rotating portion 83 provided between the second member 82 and the second member 82. When the plug member 50 is opened, the first member 81 is bent with respect to the second member 82 in a direction in which the plug body 52 approaches the inlet 43, and the first member 81 is closed when the plug member 50 is closed. The member 81 and the second member 82 are configured to have a straight posture in which the members 81 and the second member 82 are linearly arranged. Therefore, since the holding member 51 is bent so that the plug body 52 faces the supply port when the plug member 50 is opened, the liquid in the plug body 52 adheres to the user's finger when the plug member 50 is opened or closed. It becomes difficult to do. Therefore, when opening and closing the plug member 50 for the liquid injection operation, the frequency with which the liquid in the plug body 52 adheres to the user's finger or the like can be further reduced.

  (12) The holding member 51 is provided with a biasing member 84 that biases the holding member 51 in a direction in which the holding member 51 is bent from the straight posture to the bending posture. For this reason, even if it does not bend the holding member 51 by adjusting the force applied by the user when the plug member 50 is opened, the holding member 51 takes a bent posture. Therefore, the frequency with which the liquid of the plug body 52 adheres to the user's finger or the like during the opening / closing operation of the plug member 50 can be further reduced.

  (13) The liquid storage unit 30 includes a cover 32 that opens and closes in a closed state that covers the plug member 50 and an open state that does not cover the plug member 50, and the first member 81 and the second member in the state where the cover 32 is closed. And a posture holding mechanism 85 that holds the holding member 51 in the closed position in a straight posture by contacting at least one of them. For this reason, even if the holding member 51 is urged by the urging member 84 in the bending posture direction, the posture holding mechanism 85 is moved to the first member 81 when the cover 32 is closed after the plug member 50 is disposed at the closed position. And the second member 82 are in contact with at least one of the second member 82 and the holding member 51 is held in a closed state in a straight posture. Therefore, it is possible to reduce the frequency of occurrence of sealing errors caused by the stopper body 52 being displaced in a direction away from the inlet 43 by the urging force of the urging member 84. Therefore, for example, the mixing of foreign matter into the liquid container 40 and the evaporation or volatilization of the liquid from the liquid container 40 due to a sealing error can be suppressed.

(Fourth embodiment)
Next, a fourth embodiment of the liquid storage unit will be described with reference to the drawings. Hereinafter, the fourth embodiment will be described focusing on the configuration different from the first embodiment. In FIGS. 29 to 31, in the liquid storage unit 30, only a configuration for one of the plug members 50 provided individually for each of the plurality of liquid storage portions 40 is illustrated. Since the stopper member 50 has the same configuration, only one configuration will be described.

  As shown in FIG. 29, the plug member 50 of the present embodiment is slidably provided. The housing 33 or the liquid container 40 (see FIG. 5) is provided with a guide 91 that slidably holds the holding member 51 of the plug member 50. The holding member 51 is slidably held by the guide portion 91. In the example shown in FIG. 29, the guide portion 91 is provided in the housing 33, and the holding member 51 is slidably held with respect to the housing 33. Specifically, as shown in FIGS. 29 to 31, the lid portion 35 </ b> B of the housing 33 has a through hole 92 formed of a rectangular long hole extending along the longitudinal direction of the holding member 51, and the width direction of the through hole 92 is set. On the pair of inner wall surfaces facing X, a guide portion 91 made of a pair of long grooves extending along the longitudinal direction is recessed.

  The holding member 51 is higher in rigidity than the elastically deformable plug body 52 and has a long shape that is long in one direction. The holding member 51 is in a state where a part of both side portions in the width direction X is inserted into the pair of guide portions 91, and is held so as to be slidable along the longitudinal direction with respect to the housing 33. The stopper body 52 moves in the sliding direction together with the holding member 51. As shown in FIGS. 30 and 31, the direction in which the holding member 51 and the plug body 52 of this example can slide is a direction parallel to the opening surface of the injection port 43. In addition, the guide member 91 may be formed as a ridge instead of the long groove, and the holding member 51 may be slidably held by engaging the long groove provided on the side portion of the holding member 51 with the ridge. Alternatively, the guide 91 may be a rail, and the holding member 51 may slide on the rail, or a roller provided on the holding member 51 may roll on the rail.

  As shown in FIGS. 30 and 31, the holding member 51 is fixed with a plug body 52 of the type shown in FIG. 12 that contacts and seals the inlet 43. For this reason, even if the holding member 51 slides, the plug body 52 can seal the injection port 43 without interfering with the cylindrical portion 42. Further, a holding portion 53 is provided at one end of the holding member 51. The stopper body 52 is disposed between the holding portion 53 and the other end of the holding member 51. The holding member 51 is preferably provided with a covering member 65 that covers the opening on the front side of the through hole 51a into which at least a part of the plug body 52 is fitted, as shown in FIGS. In this case, it is preferable that the covering member 65 is provided corresponding to the color of the liquid stored in the liquid storage unit 40, as in the first to third embodiments. The covering member 65 may be the cap 66 shown in the figure, or the label 67 shown in FIGS.

  As shown in FIGS. 29 and 30, the liquid storage unit 30 includes restriction portions 93 and 94 that restrict the sliding range of the holding member 51 when the holding member 51 comes into contact therewith. The restricting portions 93 and 94 can be provided in the housing 33 or the liquid storage portion 40. In the present example in which the holding member 51 is slidable with respect to the housing 33, the restricting portions 93 and 94 are provided in the housing 33. As shown in FIGS. 29 and 30, one of the restricting portions 93 and 94 (the restricting portion 93 in the figure) is constituted by a part of the housing 33, and the other (the restricting portion 94 in the same figure) is in the housing 33. The guide portion 91 is detachably attached to a position corresponding to the end portion in the longitudinal direction. For this reason, the plug member 50 can be assembled along the guide portion 91 of the housing 33 with the other restricting portion 94 removed, and by attaching the restricting portion 94 after the assembly, the plug member 50 can be moved in its sliding range. Can be slidably held in a regulated state. When the holding member 51 is configured to be slidably held on the guide portion 91 of the liquid storage portion 40, it is preferable to provide the restriction portions 93 and 94 in the liquid storage portion 40, but at least one of them is provided in the housing 33. May be.

  When the user slides the plug member 50 to open the injection port 43, it can be avoided that the plug member 50 falls off the guide portion 91 by the holding member 51 hitting the restricting portion 94. When the user slides the plug member 50 and closes the injection port 43, it can be avoided that the plug member 50 comes off the guide portion 91 by the holding member 51 hitting the restricting portion 93, and the plug main body 52 has the injection port. 43 can be positioned at a sealable closed position. That is, the inlet 43 can be sealed by the stopper body 52 if the holding member 51 is closed until it comes into contact with the restricting portion 93. For example, when the stopper member 50 falls off, there is a concern that the periphery of the place where the stopper member 50 is dropped may be contaminated with liquid. However, in this embodiment, the holding member 51 will not fall off, so There is no. Note that it is sufficient that at least one of the restricting portions 93 and 94 is provided. For example, when only one of the restricting portions 93 and 94 is slid in that direction when the holding member 51 hits one of the restricting portions. Can be prevented from falling out.

According to the fourth embodiment, the same effects as the above (1) to (4), (7), and (8) in the first embodiment can be obtained, and the following effects can be obtained.
(14) In the liquid storage unit 30, the liquid storage unit 40 or the housing 33 has a guide portion 91 that slidably holds the holding member 51 of the plug member 50, and the holding member 51 is slidably held by the guide portion 91. Has been. Since the injection port 43 is opened and closed by sliding the plug member 50, the plug main body 52 does not have to be pulled out from the injection port 43, and the force required to open and close the plug member 50 can be reduced. Further, even if the stopper member 50 is opened, the portion on the inlet 43 side of the stopper body 52 is not exposed, so there is no fear that the liquid adheres to the user's finger or the like.

  (15) The holding member 51 in the liquid storage unit 30 has a long shape that is long in one direction, and holds the plug body 52 movably in a direction along the longitudinal direction of the holding member 51. Accordingly, since the plug member 50 has a degree of freedom in the position of the plug body in the longitudinal direction of the holding member 51, the inlet 43 can be more reliably sealed by the plug body 52. For example, contamination of the liquid container 40 due to a sealing error of the inlet 43 and evaporation or volatilization of the liquid from the liquid container 40 to the outside can be suppressed.

  (16) The liquid storage part 40 or the housing 33 includes restriction parts 93 and 94 that restrict the sliding range of the holding member 51 when the holding member 51 comes into contact therewith. Therefore, when the plug member 50 is moved along the guide portion 91, it can be avoided that the plug member 50 falls out of the liquid storage portion 40 or the housing 33. Therefore, it is possible to avoid a situation where the place where the plug member 50 is dropped and becomes dirty due to the adhesion of the liquid.

  You may implement by the modified example shown below at least one part of the structure included in the said embodiment. Further, the configuration included in the above embodiment and the configuration included in the following modification example may be arbitrarily combined, or the configurations included in the following modification example may be arbitrarily combined.

  One of the shaft portion for rotating the plug member and the engaging portion engaged with the shaft portion is provided in the liquid storage portion 40 or the housing 33 and the other is provided in the plug member 50. . For example, a configuration in which the shaft portion 44 is provided in the liquid storage portion 40 and the engaging portion 54 is provided at the other end of the plug member 50 as in the modification shown in FIG. The shaft portion 44 is supported by a pair of support portions 45 extending from the storage portion main body 41 of the liquid storage portion 40. 33, for example, a shaft portion 56 is provided at the other end of the plug member 50, and an engaging portion 96 that engages with the shaft portion 56 is provided in the housing 33 or the liquid storage portion 40. It may be configured. The engaging portion 96 is supported by a pair of support portions 97 extending from a position facing the shaft portion 56 of the plug member 50 in the closed state in the housing portion main body 41 or the housing 33. 32 and 33, the holding member 51 is attached in a state via a shaft misalignment prevention unit (not shown) that suppresses misalignment in the axial direction.

  The connection structure between the plug body 52 and the holding member 51 is not limited to the structure described in each of the above embodiments. For example, as shown in FIG. 34, a fitting structure in which a part of the plug body 52 is fitted into the through hole 51a of the holding member 51 may be used. As shown in the figure, the plug main body 52 includes a fitting portion 63 having an outer diameter larger than the inner diameter of the through hole 51 a at a portion opposite to the plug portion 61 that seals the injection port 43. The fitting portion 63 has a retaining portion 63a at the tip thereof, and the base portion of the retaining portion 63a is fitted into the through hole 51a in a state where the retaining portion 63a is passed through the through hole 51a.

  As shown in FIGS. 35 and 36, in the liquid storage unit 30 provided with the cover 32, a pressing portion 321 that pushes the plug member 50 toward the inlet 43 when the cover 32 is closed is provided on the back surface of the cover 32. Also good. The presser portion 321 is retrofitted to the cover 32 or formed integrally with the cover 32. According to these liquid storage units 30, when the cover 32 is turned in the direction indicated by the white arrow in FIG. 35 and closed, the presser 321 pushes the plug member 50 in the closing direction, so that the plug member 50 is temporarily Even if it floats from the closing position, the stopper member 50 can be closed to the closing position. In addition, even after the cover 32 is closed, even if the plug member 50 at the closing position receives a force in the opening direction for some reason, it can be prevented from floating in the opening direction. Therefore, it is possible to suppress the floating of the plug member 50 and to prevent evaporation and volatilization of the liquid. Further, when the liquid ejecting apparatus 12 is viewed from the front (left side in the figure), a gap is not easily generated between the cover 32 and the housing 33, so that the appearance of the liquid storage unit 30 is improved. Further, in the liquid storage unit 30 shown in FIG. 36, a locking member 322 is further provided on the cover 32, and the locking member 322 is locked to the housing 33 with the cover 32 closed. That is, a locking member 322 is fixed to the rotating end (tip) of the cover 32, and the housing 33 is engaged with a portion corresponding to the locking protrusion 323 of the locking member 322 on the cover 32 side. A locking recess 331 that can be engaged with the locking protrusion 323 is formed. When the cover 32 is turned in the direction indicated by the white arrow in FIG. 36 and closed, the locking projection 323 of the locking member 322 is locked to the locking recess 331 on the housing 33 side. According to this configuration, since the cover 32 can be held in a closed state, the floating of the plug member 50 accompanying the floating of the cover 32 can be further suppressed, and the evaporation and volatilization of the liquid can be prevented. Further, when the liquid ejecting apparatus 12 is viewed from the front (left side in the figure), a gap is less likely to be generated between the cover 32 and the housing 33 as compared with the configuration shown in FIG. Will be better.

The housing may be integrated with the casing of the liquid ejecting apparatus.
The entire plug body 52 may be fitted into the through hole 51 a of the holding member 51.
In the first to third embodiments, the casing 14 may be provided with a regulating portion that regulates the rotation range of the plug member 50 by contacting the holding member 51.

  -In 1st-3rd embodiment, it is good also as a shaft-shaped engaging part which makes a shaft part cylindrical and can be inserted in the cylinder of the both ends of a shaft part. Further, the engaging portion may be a concave or cylindrical engaging portion that can be engaged with the shaft portion at both ends thereof. Alternatively, the engaging portion of the holding member may be a cylindrical portion, and both may be engaged by inserting a shaft portion into the cylindrical portion. Even in these configurations, the holding member 51 can be rotatably held.

  The holding member 51 may be configured to rotate in a plane parallel to the opening surface of the injection port 43. In this case, the stopper main body 52 shown in FIG. According to this configuration, similarly to the slide method, the force required for opening and closing the plug member 50 can be reduced, and the frequency with which the liquid in the plug body 52 adheres to the finger or the like can be reduced.

In the first to third embodiments, the holding member 51 may be rotated around one side end. In this case, it is preferable that the grip portion is provided on the other side end.
-In 3rd Embodiment, the rotation part 83 may be provided with two or more and the holding member 51 may be bent in several places. That is, the holding member 51 further includes at least one member such as a third member in addition to the first member 81 and the second member 82, and these three or more members are connected in series via the rotating portion 83. Thus, the holding member 51 is configured to take a straight posture in the closed state and a bent posture in which the stopper body 52 is bent toward the side closer to the injection port 43 in the open state. In addition, it is preferable to provide a biasing member 84 that biases the holding member 51 from a straight posture to a bent posture in at least one of the plurality of rotating portions 83. In this case, a contact portion that can hold the holding member 51 in a straight posture by contacting at least one of the members on both sides of the rotating portion provided with the urging member 84 with the cover 32 closed. It is preferable to provide a posture holding mechanism 85 including the same.

  In the fourth embodiment, the holding member 51 may be slidably held in the width direction X. Alternatively, the injection port 43 may be opened by a slide that pulls the holding member 51 in the closed position forward, and the injection port 43 may be closed by a slide that pushes the holding member 51 in the open position to the back side.

  The entire plug body 52 may be fitted into the through hole 51 a of the holding member 51. Even in this configuration, when the injection port 43 is configured to open at the tip of the cylindrical portion 42, the injection port 43 can be sealed by fitting the plug body 52 to the cylindrical portion 42.

  The inlet 43 may be provided on any surface of the liquid storage unit 40, for example, on the front surface of the liquid storage unit 40. In this case, the stopper member 50 may be configured such that the holding member 51 is provided so as to be rotatable about the lower end (the other end), or the holding member 51 is slidably held in the vertical direction (longitudinal direction).

  The housing 33 only needs to be able to arrange one or a plurality of liquid storage portions 40 in a predetermined direction. For example, it may be a shallow housing that covers only the lower part (for example, half or less of the height in the height direction) of the liquid container 40, or may be a frame-shaped housing with front, rear, left, and right surface parts opened. The housing 33 may be configured without the window 33b.

In each embodiment, the cover 32 may be omitted. Further, only one liquid container 40 may be provided.
The liquid ejecting apparatus 12 is not limited to a configuration that forms part of the multifunction machine 11 and may be a printing apparatus dedicated to printing.

  An example of the liquid ejected by the liquid ejecting unit 21 is not limited to ink, and may be, for example, a liquid material in which functional material particles are dispersed or mixed in the liquid. For example, it may be a liquid that contains materials such as electrode materials and color materials (pixel materials) used for manufacturing liquid crystal displays, EL (electroluminescence) displays, and surface-emitting displays in a dispersed or dissolved state. That is, the liquid ejecting apparatus is composed of an apparatus for ejecting a liquid material in which materials such as electrode materials and color materials used for manufacturing various displays are dispersed or dissolved, an apparatus for ejecting an ultraviolet curable resin liquid, and other functional materials. The apparatus which ejects the liquid containing may be sufficient.

  An example of the medium M on which the liquid ejecting apparatus ejects liquid is not limited to paper, but may be a plastic film or sheet, a thin plate material, a metal foil, a laminate film, a wiring board, or a printing apparatus. It may be a fabric. Moreover, the medium M may be an arbitrary-shaped garment such as a T-shirt, or may be a three-dimensional object having an arbitrary shape such as tableware or stationery.

  The liquid ejecting apparatus may be a three-dimensional liquid ejecting apparatus that forms a three-dimensional object by ejecting a resin liquid by a liquid ejecting method (for example, an ink jet method).

  DESCRIPTION OF SYMBOLS 11 ... MFP, 12 ... Liquid ejecting apparatus, 14 ... Housing | casing, 21 ... Liquid ejecting part, 22 ... Carriage, 30 ... Liquid accommodating unit, 31 ... Case part, 32 ... Cover, 33 ... Housing, 33c ... Control part, 37 ... Shaft part, 39 ... Restriction part, 40 ... Liquid storage part, 41 ... Storage part main body, 42 ... Tube part, 43 ... Injection port, 44 ... Shaft part, 50 ... Plug member, 51 ... Holding member, 51a ... Through Hole, 52 ... Plug body, 53 ... Gripping part, 54 ... Engagement part, 56 ... Shaft part, 60 ... Connection mechanism, 65 ... Cover member, 66 ... Cap, 67 ... Label, 70 ... Positioning guide part, 71 ... Convex 71a, 71b ... guide surface, 72 ... recess, 81 ... first member, 82 ... second member, 83 ... rotating part, 84 ... biasing member, 85 ... posture holding mechanism, 86 ... first rib, 87 ... 2nd rib, 91 ... Guide part, 93, 94 ... Restriction part, 96 ... Engagement part, 3 1 ... pressing portion, 511 ... end, 512 ... the other end, 513 ... side end, M ... medium.

Claims (17)

A liquid storage unit that supplies a liquid to a liquid ejecting unit included in the liquid ejecting apparatus,
A liquid container capable of containing the liquid;
A housing in which the liquid container is disposed;
An inlet for injecting the liquid into the liquid container;
A plug member for opening and closing the injection port,
The plug member is
An elastically deformable stopper body covering the inlet;
A holding member that has higher rigidity than the plug main body and holds the plug main body,
One of a shaft portion for rotating the plug member and an engagement portion engaged with the shaft portion is provided in the housing, and the other is provided in the plug member. Containment unit. The liquid storage unit according to claim 1,
The holding member includes one end and the other end, and a side end intersecting the one end and the other end,
The liquid storage unit is characterized in that a grip portion for opening and closing the injection port is provided at the one end. The liquid storage unit according to claim 2,
The liquid container unit, wherein the stopper body is disposed between the grip portion and the other end of the holding member. The liquid storage unit according to any one of claims 1 to 3,
A plurality of the liquid storage portions are provided,
A plurality of plug members respectively corresponding to the plurality of liquid storage portions;
The plurality of plug members have one plug body for each corresponding liquid storage portion. It is a liquid storage unit as described in any one of Claims 1-4, Comprising:
The holding member has an elongated shape that is long in one direction, and holds the stopper body movably in a direction along the longitudinal direction of the holding member. The liquid storage unit according to any one of claims 1 to 5,
A positioning guide portion including the convex portion and the concave portion for positioning and guiding the plug member with respect to the inlet by inserting a convex portion into the concave portion in a state where the plug member closes the inlet. Prepared,
One of the convex part and the concave part is provided in the holding member, and the other is provided in the liquid storage part or the housing. The liquid storage unit according to any one of claims 1 to 6,
A cover for covering the plug member;
The liquid storage unit, wherein the cover or the housing has a restricting portion that restricts a rotation range of the holding member by contacting the holding member in a state where the holding member is rotated in a direction to open the injection port. The liquid storage unit according to any one of claims 1 to 6,
A cover for covering the plug member;
The cover includes a pressing portion that presses the plug member toward the injection port.
A liquid storage unit. The liquid storage unit according to any one of claims 1 to 8,
The holding member includes a through hole into which at least a part of the plug body is inserted,
The opening on the opposite side of the plug body of the through hole is covered with a covering member,
The cover member is provided corresponding to the color of the liquid stored in the liquid storage unit. The liquid storage unit according to any one of claims 1 to 7,
The holding member is located on one end side, the first member provided with the plug body, the second member located on the other end side than the first member, the first member, and the second member, A rotating part provided between
When the plug member is open, the first member is bent with respect to the second member in a direction in which the plug main body approaches the inlet, and the plug member is closed when the plug member is closed. A liquid storage unit configured to take a straight posture in which one member and the second member are linearly arranged. The liquid storage unit according to claim 10,
The liquid holding unit, wherein the holding member is provided with an urging member that urges the holding member in a direction to bend the linear member from the straight posture to the bent posture. The liquid storage unit according to claim 11,
A cover that opens and closes in a closed state that covers the plug member and an open state that does not cover the plug member;
A posture holding mechanism that holds the holding member in the straight posture at the closed position by contacting at least one of the first member and the second member when the cover is closed; A liquid storage unit. A liquid storage unit that supplies a liquid to a liquid ejecting unit included in the liquid ejecting apparatus,
A liquid container capable of containing the liquid;
A housing in which the liquid container is disposed;
An inlet for injecting the liquid into the liquid container;
A plug member for opening and closing the injection port,
The plug member is
An elastically deformable stopper body covering the inlet;
A holding member that has higher rigidity than the plug main body and holds the plug main body,
The liquid storage portion or the housing has a guide portion that slidably holds the holding member of the plug member,
The liquid holding unit, wherein the holding member is slidably held by the guide portion. The liquid storage unit according to claim 13,
The holding member has an elongated shape that is long in one direction, and holds the stopper body movably in a direction along the longitudinal direction of the holding member. The liquid storage unit according to claim 13 or 14,
The liquid storage unit or the housing includes a regulation unit that regulates a sliding range of the holding member by contacting the holding member. The liquid storage unit according to any one of claims 13 to 15,
The holding member includes a through hole into which at least a part of the plug body is inserted,
The opening on the opposite side of the plug body of the through hole is covered with a covering member,
The cover member is provided corresponding to the color of the liquid stored in the liquid storage unit. The liquid storage unit according to any one of claims 1 to 16,
A liquid ejecting apparatus comprising: a liquid ejecting section that ejects the liquid supplied from the liquid housing section of the liquid housing unit.

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