Syringe container

Abstract

To provide a syringe container capable of reliably reducing the remaining amount of a content.SOLUTION: A syringe container 1 includes a bottomed cylindrical container body 2 for storing a content, and a syringe 3 detachably attached to a mouth 2a of the container body 2, the syringe 3 includes a syringe tube 80 extending toward a bottom surface 2b of the container body 2, and an operating member 50 defining an expanding / contracting space S communicating with an upper end opening of the syringe tube 80, the syringe tube 80 is arranged so as to be movable upward relative to the operating member 50 by contacting the bottom surface 2b of the container body 2, and a suction flow path 81 that connects the inside and outside of the syringe tube 80 is formed on at least one of a lower end of the syringe tube 80 and the bottom surface 2b of the container body 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a dropper container. [Background technology]

[0002] Conventionally, dropper containers having a dropper have been used, as shown in Patent Document 1. This dropper container has a container body with a mouth, a cap that is detachably attached to the mouth, and a dropper attached to the cap. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-184186 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional dropper container described above, a gap is provided between the lower end of the dropper tube and the bottom surface of the container body as a measure to deal with dimensional variations during molding of the container body and the dropper tube. Therefore, although the dropper container described above is equipped with a mechanism for moving the dropper tube downward, depending on the degree of downward movement, the lower end of the dropper tube may not reach the bottom surface of the container body, raising concerns that the contents may not be drawn up to the last drop.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dropper container that can reliably reduce the amount of remaining content. [Means for solving the problem]

[0006] (1) A dropper container according to the present invention comprises a cylindrical container body with a bottom for containing the contents, and a dropper removably attached to the opening of the container body, the dropper comprising a dropper tube extending toward the bottom surface of the container body and an operating member defining an expandable / contractable space communicating with the upper end opening of the dropper tube, the dropper tube being movable upward relative to the operating member by contact with the bottom surface of the container body, and a suction flow path communicating the inside and outside of the dropper tube being formed in at least one of the lower end of the dropper tube and the bottom surface of the container body.

[0007] According to the dropper container of the present invention, when the lower end of the dropper tube contacts the bottom surface of the container body, the dropper tube moves upward relative to the operating member. Therefore, the exposed length of the dropper tube can be automatically adjusted so that the distance between the lower end of the dropper tube and the bottom surface of the container body is zero. Because the dropper tube can move upward, it can be designed so that the lower end of the dropper tube always contacts the bottom surface of the container body in the initial state (before the dropper is attached), taking into account dimensional variations in the container body and the dropper tube. Furthermore, a suction channel that connects the inside and outside of the dropper tube is formed in at least one of the lower end of the dropper tube and the bottom surface of the container body, so the contents can be sucked up while the lower end of the dropper tube is in contact with the bottom surface of the container body. This ensures that the remaining content in the container body can be reduced.

[0008] (2) The dropper may be provided on the operating member side and have a soft cylindrical portion that is softer than the dropper tube, and the outer peripheral surface of the dropper tube may be provided with an engaging claw portion that engages with the inner peripheral surface of the soft cylindrical portion, and the upward surface of the engaging claw portion may have an inclined shape that slopes radially inward of the dropper tube as it extends upward, and the downward surface of the engaging claw portion may have a flat shape that extends straight radially outward of the dropper tube.

[0009] In this case, when the dropper tube moves upward, the inclined shape of the upward facing surface of the engaging claw makes it easier for the dropper tube to slide along the soft cylindrical portion, and the flat shape of the downward facing surface of the engaging claw makes it difficult for the dropper tube to come out of the soft cylindrical portion. [Effects of the Invention]

[0010] According to the dropper container of the present invention, the amount of remaining content can be reliably reduced. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a vertical cross-sectional view showing a dropper container according to an embodiment of the present invention. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the configuration of the upper side of a dropper container according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] A dropper container according to one embodiment will be described below with reference to the drawings. In Figures 1 and 2, the left side of the paper shows the state before the container body is attached, and the right side of the paper shows the state after the container body is attached.

[0013] As shown in Fig. 1, dropper container 1 includes a cylindrical container body 2 with a bottom that accommodates the contents, and a dropper 3 that is detachably attached to the mouth 2a of container body 2. Dropper 3 includes an inner cap 20, an outer cap 30, an interlocking member 40, an operating member 50, a piston 60, a button member 70, and a dropper tube 80. A wiping piece 10 is fitted into the mouth 2a of container body 2.

[0014] The contents of the container body 2 may be, for example, a medicine or liquid cosmetic to be applied (discharged) to the human body (skin). The components of the dropper container 1 in this embodiment are made of a resin material. The dropper container 1 in this embodiment does not have any metal parts (such as a coil spring).

[0015] In this embodiment, the central axes of the container body 2 and the dropper 3 are located on a common axis. Hereinafter, this common axis will be referred to as the container axis O, with the side of the bottom surface 2b of the container body 2 along the container axial direction (the lower side in FIG. 1) being referred to as the lower side, and the side of the mouth portion 2a of the container body 2 along the container axial direction (the upper side in FIG. 1) being referred to as the upper side. When viewed from the container axial direction, the direction intersecting the container axis O will be referred to as the radial direction, and the direction going around the container axis O will be referred to as the circumferential direction.

[0016] Furthermore, the rotation direction toward one side in the circumferential direction may be referred to as the “loosening direction.” The loosening direction is the direction in which the interlocking member 40 rises relative to the inner cap 20 when the outer cap 30 is rotated relative to the inner cap 20. Details will be described later, but the dropper container 1 of this embodiment is configured so that when the outer cap 30 is rotated in the loosening direction relative to the container body 2, the interlocking member 40 rises relative to the inner cap 20, and then the inner cap 20 rotates in the loosening direction relative to the container body 2.

[0017] 2, the wiping piece 10 is fixed to the upper opening edge of the mouth 2a of the container body 2 and has a contact portion 11 that contacts the outer circumferential surface of the dropper tube 80. The wiping piece 10 serves to scrape off the contents adhering to the outer circumferential surface of the dropper tube 80 when the dropper tube 80 is removed upward from the container body 2.

[0018] The inner cap 20 includes an attachment tubular portion 21, a connecting tubular portion 22, an annular portion 23, a threaded engagement tubular portion 24, a connecting tubular portion 25, and a retaining tubular portion 26. The attachment tubular portion 21 is attached to the mouth portion 2a of the container body 2. In this embodiment, a female screw portion formed on the inner peripheral surface of the attachment tubular portion 21 is screwed into a male screw portion formed on the outer peripheral surface of the mouth portion 2a.

[0019] When the inner cap 20 rotates around the container axis O relative to the container body 2, the dropper 3 can be removed from or reattached to the mouth 2a of the container body 2. The attachment tube 21 is covered from the radial outside by the cap peripheral wall 31 of the outer cap 30.

[0020] The connecting tubular portion 22 is connected to the upper end of the mounting tubular portion 21. In this embodiment, the connecting tubular portion 22 has a smaller outer diameter than the mounting tubular portion 21. Note that the upper end of the mounting tubular portion 21 may also be used as the connecting tubular portion 22.

[0021] The annular portion 23 extends radially inward from the connecting tubular portion 22 and is formed in a ring shape in a plan view. The threaded tubular portion 24 extends upward from the outer edge side of the annular portion 23. A male thread is formed on the outer peripheral surface of the threaded tubular portion 24. When the inner cap 20 and the interlocking member 40 rotate relative to each other around the container axis O, the interlocking member 40 moves up and down relative to the inner cap 20.

[0022] The connecting tubular portion 25 is formed in a topped tubular shape extending upward from the inner edge side of the annular portion 23. An opening is formed in the center of the top wall of the connecting tubular portion 25, and the retaining tubular portion 26 protrudes upward from the periphery of the opening of the connecting tubular portion 25. A step is formed between the upper surface of the connecting tubular portion 25 and the outer circumferential surface of the retaining tubular portion 26, and the annular piston 60 is held in place.

[0023] The outer cap 30 has a cylindrical cap peripheral wall 31 extending along the container axis O, and a cap top wall 32 extending radially inward from the upper end of the cap peripheral wall 31. The cap top wall 32 is annular in plan view. In other words, a through hole 32a is provided in the cap top wall 32. A part of the button member 70 (button top wall 71) is located inside the through hole 32a.

[0024] Vertical ribs 33 extending in the up-down direction are formed on the inner peripheral surface of the cap peripheral wall 31. The vertical ribs 33 protrude radially inward from the inner peripheral surface of the cap peripheral wall 31. The vertical ribs 33 are formed in pairs so as to sandwich the container axis O in the radial direction. In addition, undercut protrusions 34 protruding radially inward from below the vertical ribs 33 are formed on the inner peripheral surface of the cap peripheral wall 31. The undercut protrusions 34 are fitted into the lower end of the mounting tube portion 21 of the inner cap 20 via an undercut.

[0025] Locking protrusions 20a that lock onto the vertical ribs 33 in the circumferential direction are formed on the outer peripheral surface of the inner cap 20. The locking protrusions 20a protrude radially outward from the outer peripheral surface of the mounting tube portion 21. A pair of locking protrusions 20a are formed to sandwich the container axis O in the radial direction. The vertical rib 33 is movable in the circumferential direction, for example, within an angle range of approximately 90° between the pair of locking protrusions 20a.

[0026] When the outer cap 30 is rotated around the container axis O relative to the inner cap 20 (container body 2), the outer cap 30 rotates freely relative to the inner cap 20 within the above-mentioned angle range (approximately 90°). When the outer cap 30 is rotated relative to the container body 2 beyond the above-mentioned angle range, the vertical rib 33 abuts against the side surface (the surface facing the circumferential direction) of the locking protrusion 20a, thereby restricting the relative rotation between the outer cap 30 and the inner cap 20. In this way, the vertical rib 33 and the locking protrusion 20a are configured to allow the outer cap 30 and the inner cap 20 to rotate freely within a predetermined angle range and to restrict the relative rotation between them beyond the predetermined angle.

[0027] The interlocking member 40 is disposed radially inward of the outer cap 30 and above the inner cap 20. The interlocking member 40 has a threaded tubular portion 41, a lid portion 42, a sliding tubular portion 43, a connecting portion 44, and an outer ring 45. A female thread is formed on the inner peripheral surface of the threaded tubular portion 41 to threadably engage with the male thread of the threaded tubular portion 24. The connecting portion 44 is formed in an annular shape extending radially inward from the upper end of the threaded tubular portion 41, and is connected to the lower end of the capped tubular lid portion 42.

[0028] A plurality of ventilation holes 42a are formed in the top wall of the lid portion 42. The ventilation holes 42a penetrate the lid portion 42 in the up-down direction. The ventilation holes 42a communicate the space inside the operating member 50 with the space surrounded by the interlocking member 40 and the piston 60. The sliding cylindrical portion 43 extends downward from the outer circumferential edge of the lid portion 42 and is located radially inward of the threaded cylindrical portion 41.

[0029] An annular protrusion 42b (contact ring) that abuts against the upper end surface of the inner cylinder of the piston 60 is provided on the underside of the top wall of the lid portion 42. The abutment of the underside of the lid portion 42 with the upper end surface of the inner cylinder of the piston 60 restricts the downward movement of the interlocking member 40. Furthermore, the abutment of the annular protrusion 42b with the upper end surface of the inner cylinder of the piston 60 provides a sealing effect that blocks communication between the upper end of the dropper tube 80 and the expansion / contraction space S.

[0030] The outer ring 45 extends upward from the connecting portion 44 and is located below the top wall of the lid portion 42. The lid portion 42 is located radially inward of the outer ring 45. A fixing portion 52 of the operating member 50 is fixed between the peripheral wall of the lid portion 42 and the outer ring 45.

[0031] Furthermore, the interlocking member 40 is equipped with a rotation restricting portion 48. The rotation restricting portion 48 protrudes radially outward from the outer peripheral surface of the interlocking member 40 and extends in the container axial direction. A recess is formed in the rotation restricting portion 48. The recess is recessed radially inward from the circumferential center of the outer peripheral surface of the rotation restricting portion 48. The recess is formed over the entire length of the rotation restricting portion 48 in the up-down direction. The vertical rib 33 is positioned inside the recess, thereby restricting relative rotation between the outer cap 30 and the interlocking member 40 around the container axis O.

[0032] The operating member 50 has an elastic membrane 51 and a fixed portion 52. The operating member 50 is formed as a whole from an elastic material such as rubber or elastomer. The fixed portion 52 is cylindrical and is formed to be thicker than the elastic membrane 51. The elastic membrane 51 extends upward from the fixed portion 52. The elastic membrane 51 is formed in an upwardly convex curved shape (dome shape).

[0033] The piston 60 has a sliding contact portion that slides against the inner circumferential surface of the sliding cylindrical portion 43 of the interlocking member 40. An expansion / contraction space S is provided above the piston 60. The expansion / contraction space S includes a space surrounded by the piston 60, the sliding cylindrical portion 43, and the lid portion 42, and a space inside the elastic membrane 51 that communicates with the space S via the air vent 42a. When the elastic membrane 51 elastically deforms downward, the volume of the expansion / contraction space S decreases.

[0034] The button member 70 has a button top wall 71, a button peripheral wall 72, a locking tubular portion 73, and a pressing portion 74. The button top wall 71 is disk-shaped in a plan view. In the initial position, the upper surface of the button top wall 71 is flush with the upper surface of the cap top wall 32. The button peripheral wall 72 extends downward from the outer periphery of the button top wall 71.

[0035] The locking tubular portion 73 is connected to the lower end of the button peripheral wall 72. The outer diameter of the locking tubular portion 73 is larger than the outer diameter of the button peripheral wall 72, and is capable of facing the lower surface of the cap top wall 32. The locking tubular portion 73 is formed with a locking portion 75 that locks with a locking piece 46 formed on the outer peripheral surface of the interlocking member 40. By locking the locking piece 46 with the locking portion 75, upward movement of the button member 70 can be restricted before the outer cap 30 is rotated relative to the inner cap 20.

[0036] The pressing portion 74 is a cylindrical portion extending downward from the underside of the button top wall 71, and is located radially inward of the button peripheral wall 72. The lower end of the pressing portion 74 abuts against the elastic membrane 51 of the operating member 50. When the button member 70 descends toward the operating member 50, the elastic membrane 51 is pressed by the pressing portion 74 and elastically deforms downward.

[0037] Dropper tube 80 extends in the vertical direction along container axis O. As shown in Fig. 1, a suction flow path 81 that connects the inside and outside of dropper tube 80 is formed at the lower end of dropper tube 80 while in contact with bottom surface 2b of container body 2. Suction flow path 81 is formed in the shape of a groove that is recessed upward at the lower end of dropper tube 80 and extends linearly in the radial direction.

[0038] 2, an engaging claw 82 that protrudes radially outward is provided on the outer peripheral surface of the upper end of the dropper tube 80. An upward surface 82a of the engaging claw 82 has an inclined shape that slopes upward toward the radially inward direction of the dropper tube 80. In addition, a downward surface 82b of the engaging claw 82 has a flat shape that extends straight radially outward of the dropper tube 80.

[0039] Engagement claw portion 82 has an edge shape in which the lower end of the inclined shape and the outer edge of the flat shape are connected at an acute angle. Engagement claw portion 82 is formed in an annular shape on the outer peripheral surface of dropper tube 80, and is provided in multiple stages spaced apart in the up-down direction. Alternatively, engagement claw portion 82 may be formed in a spiral shape on the outer peripheral surface of dropper tube 80. Note that these configurations of engagement claw portion 82 are just examples, and multiple engagement claw portions 82 may be provided randomly on the outer peripheral surface of dropper tube 80, for example, as long as dropper tube 80 does not slip out downward from soft tubular portion 90.

[0040] The upper end of dropper tube 80 is held by soft tubular portion 90 attached to the operating member 50. Soft tubular portion 90 is formed of a material softer than dropper tube 80 (engagement claw portion 82). Soft tubular portion 90 is preferably formed of a soft material such as polyethylene, rubber, or elastomer so that the upper end of dropper tube 80 can slide easily in a liquid-tight manner, but other materials may also be used.

[0041] Engagement claws 82 formed on the outer surface of the dropper tube 80 engage with the inner circumferential surface of the soft tubular portion 90. In other words, the engagement claws 82 bite into the inner circumferential surface of the soft tubular portion 90. The soft tubular portion 90 is disposed inside the closed-topped cylindrical connecting tubular portion 25. The upper end of the soft tubular portion 90 abuts against the top wall of the closed-topped cylindrical connecting tubular portion 25 from below. The lower end of the soft tubular portion 90 is supported from below by a pressing member 91.

[0042] The pressing member 91 is made of a material harder than the soft cylindrical portion 90. The pressing member 91 is disposed radially inside the squeezing piece 10 and surrounds the radially outside of the dropper tube 80 so as to be movable up and down. A flange 91a is formed on the outer circumferential surface of the upper end of the pressing member 91, extending radially outward and fitting into the inside of the inner cap 20 via an undercut.

[0043] The flange 91a is in undercut engagement with the inner peripheral surface of the connecting tubular portion 22 while abutting against the lower surface of the annular portion 23. The flange 91a, together with the ironing piece 10, is sandwiched in the vertical direction between the mouth portion 2a and the inner cap 20 on the opening edge of the mouth portion 2a of the container body 2.

[0044] Next, the operation of the dropper container 1 configured as above will be described.

[0045] Before the dropper 3 is attached to the container body 2, the upper end of the dropper tube 80 is engaged with the soft cylindrical portion 90, as shown on the left side of Fig. 2. In this pre-attachment state, a vertical gap is formed between the upper end of the dropper tube 80 and the lower surface of the top wall of the inner cap 20 (the top wall of the connecting cylindrical portion 25).

[0046] This gap is larger than the contact allowance h of the dropper tube 80 with the bottom surface 2b of the container body 2. The contact allowance h is the amount of downward protrusion of the lower end of the dropper tube 80 from the bottom surface 2b of the container body 2, designed to ensure that the lower end of the dropper tube 80 always contacts the bottom surface 2b of the container body 2 in the initial state (before the dropper 3 is attached), taking into account dimensional variations between the container body 2 and the dropper tube 80. The contact allowance h is set to, for example, 1 mm. In other words, even if the distance between the bottom surface 2b of the container body 2 and the lower end of the dropper tube 80 varies, no gap will form up to a maximum of 1 mm. The size of the gap should be large enough to allow the dropper tube 80 to rise even when the contact allowance h is at its maximum, taking into account dimensional variations between the container body 2 and the dropper tube 80.

[0047] When the dropper 3 is attached to the container body 2, the lower end of the dropper tube 80 comes into contact with the bottom surface 2b of the container body 2, as shown on the right side of Fig. 1. If the dimensions of the container body 2 are as designed, the dropper tube 80 will come into contact with the bottom surface 2b of the container body 2 and move upward by a contact allowance h relative to the soft cylindrical portion 90, as shown on the right side of Fig. 2.

[0048] Specifically, when dropper tube 80 moves upward, dropper tube 80 slides relative to soft cylindrical portion 90. Dropper tube 80 is provided with engaging claw portion 82 whose upward surface 82a is inclined, which makes it easier for dropper tube 80 to slide relative to soft cylindrical portion 90. On the other hand, because downward surface 82b of engaging claw portion 82 is flat, engaging claw portion 82 bites into the inner circumferential surface of soft cylindrical portion 90 and does not move downward easily.

[0049] By moving dropper tube 80 upward in this manner, the exposed length of dropper tube 80 can be automatically adjusted so that the distance between the lower end of dropper tube 80 and bottom surface 2b of container body 2 becomes zero. Furthermore, a suction flow path 81 that connects the inside and outside of dropper tube 80 is formed at the lower end of dropper tube 80, so that the contents can be sucked up with the lower end of dropper tube 80 in contact with bottom surface 2b of container body 2.

[0050] To use this dropper container 1 (in its factory condition), first, rotate the outer cap 30 relative to the inner cap 20 in the loosening direction around the container axis O. This causes the outer cap 30 to rotate freely relative to the inner cap 20 within a predetermined angular range (approximately 90° in this embodiment).

[0051] Within the above-mentioned angle range, the interlocking member 40, the button member 70, and the dropper tube 80 rotate together with the outer cap 30 relative to the inner cap 20. Specifically, when the outer cap 30 rotates relative to the inner cap 20, the interlocking member 40, whose rotation is restricted by the rotation restricting portion 48 with respect to the vertical rib 33, rotates relative to the inner cap 20.

[0052] When the interlocking member 40 rotates relative to the inner cap 20, the interlocking member 40, which screws onto the outside of the threaded cylindrical portion 24, is screwed upward, and the interlocking member 40 rises relative to the inner cap 20. At this time, the operating member 50 fixed to the interlocking member 40 pushes up the pressing portion 74 of the button member 70, causing the button member 70 to also rise. As a result, the button top wall 71 of the button member 70 protrudes upward from the outer cap 30.

[0053] When interlocking member 40 rises, sliding tube portion 43 slides upward relative to piston 60, increasing the volume of expansion / contraction space S, creating a negative pressure inside dropper tube 80. This causes the contents near bottom surface 2b of container body 2 to be sucked up through suction flow path 81 at the lower end of dropper tube 80 and the lower end opening. The amount of contents sucked up into dropper tube 80 is determined by the amount of rise of sliding tube portion 43 relative to piston 60. Therefore, dropper container 1 can hold a substantially fixed amount of contents inside dropper tube 80.

[0054] From this state, when the outer cap 30 is further rotated in the loosening direction relative to the container body 2, the inner cap 20 rotates together with the outer cap 30. This is because the vertical rib 33 abuts against the side surface of the locking protrusion 20a facing the circumferential direction. As the inner cap 20 rotates in the loosening direction relative to the container body 2, the dropper 3 is released upward from the container body 2. Then, when the dropper 3 is pulled up, the contents adhering to the outer peripheral surface of the dropper tube 80 are scraped off by the scraping piece 10.

[0055] After removing the dropper 3 from the container body 2, for example, by holding the outer cap 30 and pressing the button top wall 71, the pressing portion 74 presses the elastic membrane 51 downward. This causes the operating member 50 to be sandwiched between the pressing portion 74 and the interlocking member 40, elastically deforming the elastic membrane 51 downward, and reducing the volume of the expandable / contractable space S. As a result, the contents held in the dropper tube 80 are expelled from the lower end opening of the dropper tube 80. Furthermore, as described above, an approximately fixed amount of the contents is held in the dropper tube 80. Therefore, the user can apply an approximately fixed amount of the contents to the desired location by performing the above operation.

[0056] As described above, according to the dropper container 1 of this embodiment, when the lower end of dropper tube 80 contacts the bottom surface 2b of the container body 2, dropper tube 80 moves upward relative to operating member 50. Therefore, the exposed length of dropper tube 80 can be automatically adjusted so that the distance between the lower end of dropper tube 80 and the bottom surface 2b of the container body 2 becomes zero. Because dropper tube 80 can move upward, it can be designed so that the lower end of dropper tube 80 always contacts the bottom surface 2b of the container body 2 in the initial state (before dropper 3 is attached), taking into account dimensional variations in the container body 2 and dropper tube 80. Furthermore, a suction flow path 81 that connects the inside and outside of dropper tube 80 is formed between the lower end of dropper tube 80 and the bottom surface 2b of the container body 2, so that the contents can be sucked up while the lower end of dropper tube 80 is in contact with the bottom surface 2b of the container body 2. Therefore, the remaining amount of the content in the container body 2 can be reliably reduced.

[0057] As described above, dropper container 1 comprises bottomed, cylindrical container body 2 for accommodating the contents, and dropper 3 detachably attached to opening 2a of container body 2. Dropper 3 comprises dropper tube 80 extending toward bottom surface 2b of container body 2, and operating member 50 defining expansion / contraction space S communicating with the upper end opening of dropper tube 80. Dropper tube 80 is arranged so as to be movable upward relative to operating member 50 upon contact with bottom surface 2b of container body 2, and dropper tube 80 has a suction flow path 81 formed at its lower end, which connects the inside and outside of dropper tube 80. This configuration ensures that the remaining amount of contents can be reduced.

[0058] Moreover, in this embodiment, the dropper 3 is provided on the operating member 50 side and has a soft cylindrical portion 90 that is softer than the dropper tube 80. The outer peripheral surface of the dropper tube 80 is provided with an engaging claw 82 that engages with the inner peripheral surface of the soft cylindrical portion 90. The upward surface 82a of the engaging claw 82 has a slope that slopes radially inward of the dropper tube 80 as it extends upward, and the downward surface 82b of the engaging claw 82 has a flat shape that extends straight radially outward of the dropper tube 80. With this configuration, when the dropper tube 80 moves upward, the slope of the upward surface 82a of the engaging claw 82 makes it easier for the dropper tube 80 to slide relative to the soft cylindrical portion 90. Furthermore, the flat shape of the downward surface 82b of the engaging claw 82 makes it difficult for the dropper tube 80 to come out downward from the soft cylindrical portion 90.

[0059] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0060] For example, in the above embodiment, suction flow path 81 is formed at the lower end of dropper tube 80, but it may be formed at bottom surface 2b of container body 2, or it may be formed at both bottom surface 2b of container body 2 and the lower end of dropper tube 80. Furthermore, suction flow path 81 does not need to be a groove, as long as a gap is formed at the contact portion between bottom surface 2b of container body 2 and the lower end of dropper tube 80 due to, for example, unevenness. Furthermore, for example, the soft cylindrical portion 90 and the pressing member 91 may be formed integrally as long as the dropper tube 80 can be kept liquid-tight and prevented from coming off after it has been moved upward. In addition, for example, in the above embodiment, the dropper container 1 is exemplified as one that draws up a fixed amount of content, but the dropper container 1 does not necessarily have to have such a fixed amount mechanism. For example, the operating member 50 may be directly attached to the upper end of the dropper tube 80. Alternatively, the user may directly press the operation member 50 with a finger or the like, in which case the button member 70 may not be provided.

[0061] In addition, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, and the above-described embodiments and variations may be combined as appropriate, without departing from the spirit of the present invention. [Explanation of symbols]

[0062] 1 dropper container 2 Container body 2a Mouth 2b Bottom 3. Dropper 10 Squeezing Pieces 11 Contact part 20 Inner cap 20a Locking protrusion 21 Mounting tube 22 Continuous cylinder part 23 Annular section 24 Threaded tube part 25 Connecting tube 26 Holding cylinder part 30 outer cap 31 Cap peripheral wall 32 Cap top wall 32a through hole 33 Vertical rib 34 Undercut protrusion 40 Interlocking members 41 Threaded tube part 42 Lid 42a Ventilation hole 42b Annular protrusion 43 Sliding cylinder 44 Connecting part 45 outer ring 46 Locking piece 48 Rotation control part 50 Operating member 51 Elastic membrane 52 Fixed part 60 pistons 70 Button parts 71 Button top wall 72 Button Wall 73 Locking tube 74 Pressing part 75 Locked part 80 Dropper tube 81 Suction channel 82 Engagement claw 82a Upward facing 82b Downward surface 90 Soft cylinder part 91 Holding member 91a flange h Contact fee O Container axis S Expanding Space

Claims

1. a cylindrical container body with a bottom that accommodates contents; a dropper detachably attached to the opening of the container body, The dropper is a dropper tube extending toward the bottom surface of the container body; an operating member defining an expansion / contraction space communicating with the upper end opening of the dropper tube; the dropper tube is provided so as to be movable upward relative to the operating member by contacting with the bottom surface of the container body; a suction flow path that connects the inside and outside of the dropper tube is formed in at least one of the lower end of the dropper tube and the bottom surface of the container body; Dropper container.

2. the dropper is provided on the operating member side and has a soft cylindrical portion that is softer than the dropper tube, an engaging claw portion that engages with an inner peripheral surface of the soft cylindrical portion is provided on an outer peripheral surface of the dropper tube; the upward surface of the engaging claw has an inclined shape that slopes inward in the radial direction of the dropper tube as it extends upward, The downward surface of the engaging claw portion has a planar shape extending straight outward in the radial direction of the dropper tube. The dropper container according to claim 1 .

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