JP5064188B2 - Liquid ejection container - Google Patents

Description

  According to the present invention, an upper plate and a lower plate are disposed so as to be movable up and down inside the body part of the container body, thereby forming a filling space for the contents between them, and reducing the volume of the filling container together with the ejection of the contents. The present invention relates to a liquid ejection container capable of performing the above.

A conventional liquid ejection container includes a lower plate that forms a filling space for the contents inside the body portion of the container body, and the negative generated in the filling space when the contents in the filling space are ejected to the outside. There is one in which the contents can be efficiently taken out without touching the outside air by pushing up the contents by raising the lower plate using pressure (see, for example, Patent Document 1).
JP 2003-212262 A

  On the other hand, the applicant of the present application forms a filling space for the contents between the lower plate and the lower plate, and starts to descend when the lower plate reaches the top dead center. We have inferred what made it possible to visually check the remaining amount by using the movement of the upper plate.

  However, the liquid ejection container usually has a pump for ejecting the contents, and the cylinder of the pump hangs down inside the body through the inside of the mouth of the container body. For this reason, when adopting the above-mentioned top plate while ensuring the volume of the container body, the top plate needs to be hollow so as to penetrate the cylinder.

  In addition, in the liquid ejection container, when the pump is attached to the mouth part of the container body, the pump may be plugged into the mouth part. When the pump is assembled, the upper plate and the pump cylinder may interfere with each other. In this case, there is a problem that when the pump is plugged into the container body filled with the contents while the upper plate is interfering with the pump cylinder, the upper plate is pushed in by the pump cylinder.

  In addition, as a result of testing and research, the inventors of the present application have found that the conventional liquid ejection container has a structure in which air accumulates in the vicinity of the mouth and shoulders of the container body, and the movement of the upper plate becomes worse. I confirmed that it would end up.

The problem to be solved by the present invention is that, in a liquid ejection container in which a pump is mounted inside the mouth of the container body, an upper plate and a lower plate are disposed so as to be able to be raised and lowered inside the body part of the container body. When the contents filling space is formed in the container, and the volume of the filling container can be reduced together with the ejection of the contents, when the pump is assembled to the mouth of the container body, the upper plate is pushed in, and the conventional structure Then, since air accumulates in the vicinity of the mouth and shoulders of the container body, the movement of the upper plate may be worsened.
An object of the present invention is to provide a new and easy-to-use device in which the upper plate is not pushed in when the pump is assembled to the mouth portion of the container body, the positioning is appropriately performed, and the smooth movement of the upper plate is realized. The object is to provide a liquid ejection container.

  The liquid ejection container according to the present invention has a mouth portion that fills the contents, and the mouth portion is connected to the trunk portion via the shoulder portion, and the inside of the mouth portion of the container body passes through the inside of the mouth portion. A pump having a cylinder that hangs down and attached to the mouth; an upper plate that has a cylindrical portion surrounding the cylinder of the pump and is slidably held on the inner peripheral surface of the barrel; and the upper plate A lower plate that is slidably held on the inner peripheral surface of the body portion, and is connected to the pump and is operated by repeatedly pushing down and returning the pump between the upper plate and the lower plate. A nozzle head that ejects the contents of the formed filling space, and has an inner peripheral surface that fits and holds the cylinder between the mouth and the cylinder, and is a hollow attached to the mouth An adapter member is provided.

  The adapter member according to the present invention preferably forms a gap between the mouth portion.

  Further, according to the present invention, a cylindrical wall is provided on the inner side of the shoulder portion of the container body so as to hang from the shoulder portion and surround the adapter member, and the cylindrical portion of the upper plate is connected to the adapter member and the container body. A seal that is arranged in a gap formed between the cylindrical wall and that keeps the tip of the cylindrical part slidably in contact with the cylindrical wall of the container main body so as to keep airtight between the cylindrical wall. Can be configured as a part.

  According to the present invention, a cylindrical wall is provided on the inner side of the shoulder portion of the container body so as to hang from the shoulder portion and surround the adapter member, and the cylindrical portion of the upper plate is connected to the cylindrical wall of the container body. In addition to being disposed so as to surround, it is also possible to configure the tip of the cylindrical portion as a sealing portion that slidably contacts the cylindrical wall of the container main body and holds the cylindrical wall in an airtight manner.

  In addition, according to the present invention, it is preferable that the pressure receiving surface of the upper plate is a tapered surface inclined toward the cylindrical portion.

  The upper plate is detachable so that the upper plate is hooked on the container body to regulate the lowering of the upper plate and the hook is released by the negative pressure generated in the filling space after the lower plate reaches the top dead center. It is preferable to provide a simple locking portion.

  The locking portion can be appropriately provided at various positions according to the shape of the inner surface of the container main body.For example, the protrusion is suspended from the inside of the shoulder of the container main body, and the protruding piece is removed from the pressure receiving portion of the upper plate. Stand up and place on each of the projecting pieces. Further, examples of such a locking portion include a convex portion that rides on each other and fits, and a concave portion and a convex portion that fit when one of them falls into the other.

  In addition, in the case where such a locking portion is present, a see-through portion that can be seen through the inside of the container body is formed immediately below the shoulder portion of the body portion of the container body, and the upper plate is attached to the upper plate. A decorating part that changes the state of visual recognition from the fluoroscopic part in the lowered state can be provided.

  In this case, the decorating part is provided on the outer peripheral surface of the outer peripheral part, and is visible from the fluoroscopic part when the upper plate is hooked, and is not visible when the upper plate is lowered. be able to.

  In the case of such a configuration, it is preferable to form a gap for providing the decorating part between the container body and the outer peripheral surface of the outer peripheral part.

  In the present invention, “decoration” refers to visually appealing characters, figures, symbols, colors, patterns, or combinations thereof. Examples of the method for decorating include printing and labeling.

  According to the present invention, the hollow body attached to the mouth portion has an inner peripheral surface for fitting and holding the cylinder between the mouth portion of the container main body and the cylinder of the pump attached to the mouth portion. Since the adapter member is provided, for example, if the adapter member is assembled in advance to the pump cylinder, the pump cylinder does not interfere with the upper plate even if the pump is assembled to the container body in which the upper plate is previously assembled. Therefore, when assembling the pump, the upper plate is not pushed in. That is, according to the present invention, the upper plate can be positioned at an appropriate position with respect to the container body regardless of the assembly of the pump.

  Also, even if air accumulates in the vicinity of the mouth and shoulders of the container body before assembling the pump due to the filling of contents, etc., if the pump is assembled together with the adapter member, It is possible to escape to the outside through a gap formed between the two parts. Thereby, it is possible to improve the poor movement of the upper plate caused by the accumulation of air near the mouth and shoulder of the container body.

  Therefore, according to the present invention, when assembling the pump to the mouth of the container body, the upper plate is not pushed in, the positioning is performed appropriately, and the new liquid that is easy to use and realizes the smooth movement of the upper plate. An ejection container can be provided.

  In addition, in the present invention, on the inner side of the shoulder portion of the container main body, a cylindrical wall is provided that hangs from the shoulder portion and surrounds the adapter member, and the cylindrical portion of the upper plate is connected to the cylinder of the adapter member and the container main body. A sealing portion that is disposed in a gap formed between the cylindrical wall and that holds the tip of the cylindrical portion in a slidable contact with the cylindrical wall of the container main body so as to keep airtight between the cylindrical wall. If this is configured, the airtightness in the container body can be further improved.

  In the present invention, a cylindrical wall is provided on the inner side of the shoulder portion of the container body so as to hang from the shoulder portion and surround the adapter member, and the cylindrical portion of the upper plate surrounds the cylindrical wall of the container body. Even if the tip of the cylindrical part is arranged as a sealing part that slidably contacts the cylindrical wall of the container main body and keeps airtight between the cylindrical wall, The airtightness of the can be further improved.

  Further, in the present invention, if the pressure receiving surface of the upper plate is a tapered surface inclined toward the cylindrical portion, the air accumulated in the vicinity of the mouth portion and the shoulder portion of the container body when the pump is assembled together with the adapter member. Can be efficiently released into the gap formed between the mouth of the container body and the adapter member, and the movement of the upper plate can be made smoother. As a secondary effect, when the lower plate pushes up the contents to the suction port of the pump, the contents in the filling space can be guided to the suction port of the pump.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view showing a partial cross section of an unused state of the liquid ejection container 100 according to the first embodiment of the present invention, and FIG. 2 shows a state in which an inner plate 140 of the same form has reached top dead center. FIG. Furthermore, FIG. 3 is a side view showing the used state of the same form in a partial cross section.

  FIG. 4 is a cross-sectional view of the main part showing the main part in a state before the upper plate is lowered in the same form, and FIG. 5 is a view in which the upper plate is lowered in the same form. It is principal part sectional drawing which shows the principal part of a completed state in a cross section.

  In the drawing, reference numeral 110 denotes a container main body having a cylindrical mouth portion 111 that is filled with contents, and the mouth portion 111 is integrally connected to a cylindrical body portion 113 via a shoulder portion 112.

  The container body 110 is made of a transparent or translucent synthetic resin. A light shielding material F such as an opaque film having a light shielding property is wound around the container body 110. By partially or transparently opening a part of the light shielding material F, the shoulder portion 112 of the trunk portion 113 is provided. Directly below, a see-through portion 114 made of a transparent synthetic resin is locally formed. Further, a bottom lid portion 115 having an outside air introduction hole h is separately attached to an end portion of the body portion 113 facing the mouth portion 111 along the axis O of the container body 110.

  Reference numeral 120 denotes a pump that is attached to the mouth 111 and sucks, compresses, and discharges contents by repeatedly pressing and returning.

  Specifically, the pump 120 includes a cover 121, and the cover 121 has a mounting cylinder 121a that is detachably screwed to the mouth 111 outside the mouth 111, and inside the mounting cylinder 121a. Is integrally formed with a cylinder 122 that hangs down on the body 113 through the inside of the mouth 111 via the top wall 121b.

  The cylinder 122 has a suction port formed at the tip 120a thereof. Further, the cylinder 122 is attached to the upper end of the mouth part 111 via the seal ring S, and keeps a space between the mouth part 111 and the cylinder 122 in an airtight state.

  Reference numeral 130 denotes a hollow cylindrical adapter member provided between the mouth portion 111 and the cylinder 122. The adapter member 130 has an outer peripheral surface 131 attached to the inside of the mouth 111 and an inner peripheral surface 132 that fits and holds the cylinder 122.

  Specifically, as shown in FIGS. 4 and 5, the outer peripheral surface 131 of the adapter member 130 is composed of a step surface 131a that reduces the diameter of the tip 120a side and a tapered surface 131b that tapers toward the tip 120a. Yes. Thus, the outer peripheral surface 131 is divided into a large diameter surface 131c, a medium diameter surface 131d, and a small diameter surface 131e with the step surface 131a and the tapered surface 131b as a boundary.

  On the other hand, the inside of the mouth 111 is an inner peripheral surface 111a having a diameter equal to or larger than the large-diameter surface 131c of the adapter member 130, and a stepped surface of the adapter member 130 so that the adapter member 130 does not fall off. The step surface 111b is joined to 131a. Furthermore, the inner diameter of the opening formed inside the stepped surface 111b is also the same as or larger than the inner diameter surface 131d of the adapter member 130.

  That is, when the adapter member 130 is assembled to the mouth portion 111, a slight gap is formed between the mouth portion 111 and the adapter member 130. Therefore, after the adapter member 130 is assembled to the cylinder 122 by fitting, When the unit is attached to the mouth portion 111, the air accumulated in the vicinity of the mouth portion 111 and the shoulder portion 112 in the container main body 110 when the contents are filled can be released from the gap.

  Reference numeral 140 denotes an upper plate made of a synthetic resin having the same light-shielding color as the container body 110. The upper plate 140 has an outer peripheral portion 141 that can slide on the inner peripheral surface 113f of the body portion 113 along the axis O, and a cylindrical portion that surrounds the cylinder 122 via the pressure receiving portion 142 on the outer peripheral portion 141. 143.

  On the other hand, in the present embodiment, a cylindrical wall 116 is provided inside the shoulder portion 112 of the container body 110 so as to hang from the shoulder portion 112 and surround the adapter member 130 with a space therebetween.

  On the other hand, when the upper plate 140 is not in use, its cylindrical portion 143 is disposed in a gap formed between the adapter member 130 and the cylindrical wall 116 as shown in the figure.

  Further, the distal end 143a of the cylindrical portion 143 is curved toward the cylindrical wall 116 so as to be slidably contacted with the inner peripheral surface of the cylindrical wall 116 and airtightly maintained between the cylindrical wall 116. It is comprised as a sealing part. Thereby, the lower side of the upper plate 140 is partitioned into a state of being sealed with respect to the upper side.

  Further, the upper plate 140 is detachably locked to the shoulder 112 of the container body 110 as described below.

  That is, in this embodiment, the projecting piece 117 is suspended from the inside of the shoulder portion 112 of the container body, and the projecting piece 144 is erected from the pressure receiving portion 142 of the upper plate 140, and one of the projecting pieces 117 and 144 is on the other side. A locking concave portion C1 and a locking convex portion C2 that are detachably fitted by being depressed are provided.

  As a result, the upper plate 140 is hooked on the container body 110 and its lowering is restricted, and a large external force (pressure) is also applied to the upper plate 140 as the engaging force of the locking recess C1 and the locking protrusion C2. Then, the external force (pressure) releases the hook and descends. In addition, in order to realize smooth sliding of the upper plate 140, the shoulder portion 112 is formed with an outside air introduction hole h similarly to the bottom lid portion 115.

  Note that the locking recess C1 and the locking projection C2 are annular or intermittent (both single or multiple intermittent) around the protruding piece 117 when the protruding piece 117 hanging from the shoulder 112 is cylindrical. Can be formed).

  In addition, for example, the timing of releasing the engagement between the locking recess C1 and the locking projection C2 can be set by, for example, the amount of engagement between the locking recess C1 and the locking projection C2, or the locking recess C1 and the locking projection. The shape of the part C2, the hardness thereof, or the like can be changed as appropriate.

  Further, when the upper plate 140 and the container main body 110 are detachably engaged, in addition to the combination of the locking concave portion C1 and the locking convex portion C2, the locking convex portions that ride on each other and fit together are listed. It is done.

  Reference numeral 150 denotes a lower plate positioned below the upper plate 140. The lower plate 150 has an outer edge portion 151 that is slidably held on the inner peripheral surface 113f of the body portion 113, and has a cylindrical shape that extends toward the mouth portion 111 via an annular pressure receiving portion 152 on the inner side thereof. A support portion 153 is integrally formed.

  The cylindrical support portion 153 is formed with a notch that opens the inside outward at at least one place in the circumferential direction. Further, the cylindrical support portion 153 includes a hollow seat member 153a inside thereof. The seat member 153a determines the top dead center of the lower plate 150 by contacting the tip 120a of the cylinder 122 as the lower plate 150 rises. Further, the seat member 153a is also formed with a notch that opens the inside outward at at least one place in the circumferential direction. Note that the lower plate 150 is seated on a cylindrical seat wall 115a that stands integrally with the bottom lid 115 as shown in FIG. 1 in an unused state before the contents are ejected.

  Thereby, a space R for filling the contents is formed between the upper plate 140 and the lower plate 150. The volume of the filling space R decreases as the contents are ejected by raising the lower plate 150 and lowering the upper plate 140. Further, since the cylindrical support portion 153 and the seat surface member 153a are notched, the contents of the filling space R can be efficiently sucked even if the seat surface member 153a hits the cylinder tip 120a. Can do.

  The upper plate 140 of this embodiment was caught by the container main body 110 while the lower plate 150 was raised with the ejection of the contents by adjusting the engagement force of the locking concave portion C1 and the locking convex portion C2. After the lowering is restricted and the lower plate 150 reaches the top dead center, when the negative pressure generated in the filling space R exceeds the engaging force of the locking recess C1 and the locking projection C2, The hook is released and lowered.

  Reference numeral 160 denotes a nozzle head that is connected to the pump 120 and operates the pump 120 by repeatedly pressing and returning the pump 120 to eject the contents of the filling space R formed between the upper plate 140 and the lower plate 150. .

  According to the present embodiment, the inner peripheral surface 132 for fitting and holding the cylinder 122 is provided between the mouth portion 111 and the cylinder 122 of the pump 120 attached to the mouth portion 111, and is attached to the mouth portion 111. Since the adapter member 130 is provided, for example, as described above, if the adapter member 130 is assembled to the cylinder 122 in advance, even if the pump 120 is assembled to the container body 110 on which the upper plate 140 is assembled beforehand, Since the cylinder 122 of the pump 120 does not interfere with the upper plate 120 at all, the upper plate 140 is not pushed in when the pump 120 is assembled. That is, according to this embodiment, the upper plate 140 can be positioned at an appropriate position with respect to the container body 110 regardless of the assembly of the pump 120.

  Further, according to such a configuration, even if air accumulates in the vicinity of the mouth portion 111 and the shoulder portion 112 before assembling the pump 120 due to filling of the contents, etc., if the pump 120 is assembled together with the adapter member 130, this The accumulated air can be released to the outside through a gap formed between the mouth portion 111. Thereby, it is possible to improve the poor movement of the upper plate 140 caused by the accumulation of air near the mouth portion 111 and the shoulder portion 112 of the container main body 110.

  Therefore, according to the present invention, when the pump 120 is assembled to the mouth portion 111 of the container body 110, the upper plate 140 is not pushed in, the positioning is performed appropriately, and the smooth movement of the upper plate 140 is realized. It is possible to provide a novel liquid ejection container with good quality.

  In addition, as in this embodiment, a cylindrical wall 116 surrounding the adapter member 130 is provided inside the shoulder 112, and the cylindrical portion 143 of the upper plate 140 is formed between the adapter member 130 and the cylindrical wall 116. When the container body is configured as a sealing portion that is disposed in the gap and the tip 143a of the cylindrical portion 143 is slidably in contact with the cylindrical wall 116 and hermetically holds the space between the cylindrical wall 116, The airtightness in 110 can be further improved.

  Furthermore, in this embodiment, the pressure receiving surface 140f of the upper plate 140 is a tapered surface that is inclined toward the tubular portion 143. In this case, when the pump 120 is assembled together with the adapter member 130, the air accumulated in the vicinity of the mouth portion 111 and the shoulder portion 112 can be efficiently released to the gap formed between the mouth portion 111 and the adapter member 130. Since it is possible, the movement of the upper plate 140 can be made smoother. As a secondary effect, when the lower plate 150 pushes the contents up to the tip 120a of the cylinder 122, the contents in the filling space R can be guided to the suction port formed in the tip 120a of the cylinder 122. it can.

  FIG. 6 is a side view showing in partial cross section an unused state of a liquid ejection container 200 according to another embodiment of the present invention. Since the present embodiment has the same configuration as the previous embodiment except for the portions described below, the same portions as those of the previous embodiment have the same reference numerals and description thereof is omitted.

  In this embodiment, a step is formed at the tip of the cylindrical support portion 153 of the lower plate 150 so that the lower end of the cylindrical wall 116 of the container shoulder 112 can be brought into contact. In this embodiment, the cylindrical portion 143 of the upper plate 140 is disposed so as to surround the cylindrical wall 116 of the container main body 110, and the tip 143a of the cylindrical portion 143 is curved toward the cylindrical wall 116 side. Thus, it is configured as a sealing portion that slidably contacts the outer peripheral surface of the cylindrical wall 116 of the container main body 110 and holds the space between the cylindrical wall 116 in an airtight manner. Even with such a configuration, the airtightness in the container main body 110 can be further improved as in the previous embodiment.

  In addition, each form mentioned above has a common effect as shown below.

  In the above-described embodiments, the user can eject the contents of the filling space R to the outside through the nozzle head 160 by operating the nozzle head 160. At this time, the lower plate 150 rises from the state shown in FIG. 1 toward the mouth 111 as the contents are ejected. However, when the lower plate 150 reaches the top dead center as shown in FIG. Since the engagement of the locking concave portion C1 and the locking convex portion C2 is released by the negative pressure inside, a click sound is generated at the moment of the release, and a click feeling is given to the hand holding the container 100. Thereby, the user can recognize reliably that there are few remaining contents by hearing and touch.

  In addition, when the engagement of the locking recess C1 and the locking projection C2 is released, the upper plate 140 reaches the top dead center due to the negative pressure in the filling space R as shown in FIG. Since it descends toward 150, it is possible to take out the remaining liquid that could not be used in the past and eject it to the outside.

  That is, according to such a configuration, it is possible to confirm the remaining amount of the contents by hearing and touch while effectively using the remaining liquid.

  In addition, in the present embodiment, when the locking recess C1 and the locking projection C2 are engaged with the outer peripheral surface of the outer peripheral portion 141 of the upper plate 140, the visible portion 114 is visible and the upper plate 140 is lowered. Then, the decoration part D1 in which at least one part cannot be visually recognized is provided.

  Specifically, an annular recess 141a that circulates along the outer peripheral portion 141 is formed in the outer peripheral portion 141 of the upper plate 140, and a decorative portion D1 is provided in the annular recess 141a. As a result, the two annular outer peripheral edges 141 divided up and down by the annular recess 141a are each slidably held by the body inner peripheral surface 113f, and the decoration part D1 is the body inner peripheral surface. It will be arranged in a gap that does not interfere with 113f.

  According to this configuration, the size of the see-through portion 114 and the decoration portion D1, the bottom dead center when the upper plate 140 is lowered, that is, the upper plate 140 on the cylindrical support portion 153 of the lower plate 150 at the top dead center. By appropriately setting the position where the pressure receiving part 143 contacts, the decoration part D1 is visible from the fluoroscopic part 114 when the upper plate 140 is caught, and is not visible when the upper plate 140 is lowered. It becomes possible.

  That is, since the decorative portion D1 is not visible from the see-through portion 114 of the container body 110, no hearing or tactile sensation occurs after the engagement of the locking recess C1 and the locking projection C2 is released. It is more effective for checking the remaining amount without using it.

  While the above is to describe one embodiment of the present invention, various modifications can be made within the scope of the claims. For example, each structure of the form mentioned above can be suitably combined according to the objective and the use.

It is a side view which shows the unused state of the liquid ejection container which is a 1st form of this invention in a partial cross section. It is a side view which shows the state which the inner plate of the same form reached | attained top dead center in a partial cross section. In the same form, it is principal part sectional drawing which shows the principal part of a state before a top plate descend | falls in a cross section. In the same form, it is principal part sectional drawing which shows the principal part of a state before a top plate descend | falls in a cross section. It is principal part sectional drawing which shows the principal part of the used state which the upper plate fell in the same form in a cross section. It is a side view which shows the unused state of the liquid ejection container which is the other form of this invention in a partial cross section.

Explanation of symbols

100 Liquid ejection container (first form)
110 Container body
111 mouth
111a Inner peripheral surface of mouth
112 shoulder
113 Torso
113f Inner peripheral surface
114 Transmission part
115 Bottom
116 cylindrical wall
117
120 pump
121 Pump cover
121a Installation cylinder
121b Installation cylinder
122 cylinders
130 Adapter material
131 Adapter member outer peripheral surface
131a Step surface
131b Tapered surface
131c Large diameter surface
131d Medium diameter surface
131e small diameter surface
132 Adapter member inner peripheral surface
140 top plate
141 Outer perimeter
141a Top plate annular recess
142 Upper plate pressure sensor
143 Upper plate cylinder
143 Top plate cylindrical part tip (sealing part)
144
150 Lower plate
151 Outer part of lower plate
152 Lower plate pressure sensor
153 Tubular support
154 Lower tray cylindrical part
160 nozzle head
170 Cover cap
200 Liquid ejection container (second form)
C1 engagement recess
C2 engagement convex part D1 decoration part

Claims (5)

A container body having a mouth portion for filling the contents, the mouth portion being connected to the trunk portion via a shoulder portion, and a cylinder that hangs down inside the trunk portion through the inside of the mouth portion of the container body; A pump mounted on the upper plate, an upper plate having a cylindrical portion surrounding the cylinder of the pump, and slidably held on the inner peripheral surface of the barrel portion; The lower pan that is slidably held on the inner peripheral surface, and the contents of the filling space formed between the upper pan and the lower pan are connected to the pump and the pump is operated by repeatedly pushing down and returning. A nozzle head for jetting,
A liquid ejection container comprising an inner peripheral surface for fitting and holding the cylinder between the mouth and the cylinder, and a hollow adapter member attached to the mouth.   The liquid ejection container according to claim 1, wherein the adapter member forms a gap with the mouth portion. In claim 1 or 2, on the inside of the shoulder portion of the container body, a cylindrical wall that hangs from the shoulder portion and surrounds the adapter member is provided.
While arranging the cylindrical part of the upper plate in the gap formed between the adapter member and the cylindrical wall of the container body,
A liquid ejection container, wherein the tip of the cylindrical part is configured as a sealing part that slidably contacts with the cylindrical wall of the container main body and keeps airtight between the cylindrical wall. In claim 1 or 2, on the inside of the shoulder portion of the container body, a cylindrical wall that hangs from the shoulder portion and surrounds the adapter member is provided.
While arranging the cylindrical portion of the upper plate so as to surround the cylindrical wall of the container body,
A liquid ejection container, wherein the tip of the cylindrical part is configured as a sealing part that slidably contacts with the cylindrical wall of the container main body and keeps airtight between the cylindrical wall.   5. The liquid ejection container according to claim 1, wherein the pressure receiving surface of the upper plate is a tapered surface inclined toward the cylindrical portion.

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