JP2022026898A - Syringe container - Google Patents

Abstract

To provide a syringe container in which a change in a projection amount to an outer cap of an operation part is suppressed.SOLUTION: A syringe container 10 includes: a container body 1; an inner cap 40 screwed to a mouth part 1a of the container body 1; a syringe tube 20; an outer cap 50 for regulating a predetermined amount or more of rotation around a container axis O to the inner cap 40; an operation member 60 which regulates rotation around the container axis O to the outer cap 50, and vertically moves with respect to the inner cap 40 by rotating around the container axis O with respect to the inner cap 40; an operation part 71 projecting upward through a through hole 52a formed on a top wall 52 of the outer cap 50; a piston 30 and a sliding cylinder part 66 which are slid to each other when the operation member 60 vertically moves with respect to the inner cap 40; and a packing 90. An operation space S changing capacity by mutually sliding the piston 30 and the sliding cylinder part 66 is formed between the operation member 60 and the inner cap 40.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dropper container.

Conventionally, as shown in Patent Document 1, a dropper container having a dropper tube has been used. In the configuration of Patent Document 1, when the outer cap (cover) is rotated with respect to the container body, the outer cap rises with respect to the container body and the contents are sucked up by the dropper tube. After that, by pressing the operation unit (push button) against the outer cap, the contents can be discharged.

Japanese Unexamined Patent Publication No. 2016-33056

In the dropper container of Patent Document 1, when the contents are sucked up into the dropper tube, the amount of protrusion of the operating portion with respect to the lid increases. However, depending on the use of the dropper container, in order to reduce the change in appearance, it has been required to suppress the change in the amount of protrusion of the operation portion with respect to the outer cap when sucking up the contents.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a dropper container in which a change in the amount of protrusion with respect to the outer cap of the operating portion is suppressed.

In order to solve the above problems, the dropper container according to one aspect of the present invention includes a bottomed tubular container body for accommodating the contents, an inner cap screwed to the mouth of the container body, and the inner part. A drop tube fixed to the cap and opened in the container body, an outer cap whose rotation around the container axis is restricted to a predetermined amount or more with respect to the inner cap, and rotation around the container axis with respect to the outer cap are restricted. At the same time, an actuating member that moves up and down with respect to the inner cap by rotating about the container axis with respect to the inner cap, and an operation portion protruding upward through a through hole formed in the top wall of the outer cap. The inner cap is compressed and deformed by sealing between the piston and the sliding cylinder portion that slide with each other when the operating member moves up and down with respect to the inner cap, and between the inner cap and the mouth portion. A packing for urging upward is provided, and the operating member and the inner cap communicate with each other in the internal space of the dropper pipe, and the piston and the sliding cylinder portion slide with each other. A working space is formed in which the volume increases.

According to the above aspect, when the outer cap is rotated around the container axis with respect to the container body, the outer cap rotates with respect to the inner cap within a predetermined amount range. At this time, the operating member whose rotation with respect to the outer cap is restricted also rises while rotating with respect to the inner cap. As a result, the piston and the sliding cylinder portion slide with each other, and the pressure in the working space becomes negative as the volume of the working space increases. Therefore, the internal space of the dropper tube communicating with the working space also becomes a negative pressure, and the contents of the container body can be sucked up from the opening of the dropper tube.
In this way, the operation unit is not involved in the operation for sucking up the contents in the dropper tube, and the operation part, the outer cap, and the operating member are integrally raised with respect to the inner cap, so that when sucking up the contents. The amount of protrusion from the outer cap of the operation unit does not change. Therefore, according to the above aspect, it is possible to provide a dropper container in which a change in the amount of protrusion with respect to the outer cap of the operating portion is suppressed.
Further, since the amount of increase in the volume of the working space is determined based on the amount of rotation of the outer cap with respect to the inner cap, the operation of rotating the outer cap with respect to the inner cap by a predetermined amount sucks up a substantially fixed amount of contents into the dropper tube. be able to.
Further, since it is not necessary to use a metal spring or the like as a constituent member, it is possible to reduce the labor of separate disposal.

Here, the packing has an annular packing main body, a concave portion that is recessed downward from the upper surface of the packing main body, and a convex portion that protrudes downward from the packing main body. The convex portion may overlap with the convex portion.

In this case, when the packing is compressed up and down, the packing can be smoothly elastically deformed so that the convex portion enters the inside of the concave portion, and the inner cap can be urged upward.

Further, a plurality of the convex portions may be formed on the packing main body at intervals in the circumferential direction.

In this case, the inner cap is urged upward in a well-balanced manner, and it is possible to prevent the inner cap from tilting with respect to the mouth. Further, when the inner cap is tightened with respect to the mouth portion, the space between the convex portions can be used as an exhaust passage. As a result, it is possible to prevent the internal pressure of the container body from increasing and the amount of the contents sucked up to the dropper tube from the next time onward to vary.

Further, an elastic arm that engages with the mouth portion to urge the inner cap upward may be formed at the lower end of the inner cap.

In this case, in addition to the upward urging force due to the compression of the packing, the upward urging force by the elastic arm acts on the inner cap, and the upward urging force acting on the inner cap can be more stabilized.

According to the above aspect of the present invention, it is possible to provide a dropper container in which a change in the amount of protrusion of the operating portion with respect to the outer cap is suppressed.

It is a vertical sectional view of the dropper container which concerns on 1st Embodiment. FIG. 1 is a cross-sectional view taken along the line II-II of the outer cap and the inner cap of FIG. FIG. 3 is a vertical cross-sectional view showing a state in which the outer cap of FIG. 1 is rotated with respect to the inner cap. It is a bottom view of the packing of FIG. It is a vertical sectional view which shows the state which raised the dropper assembly of FIG. 1 with respect to a container body. It is a semi-vertical sectional view of the dropper container which concerns on 2nd Embodiment. It is a VII direction arrow view of FIG.

(First Embodiment)
Hereinafter, the dropper container of the present embodiment will be described with reference to the drawings.
As shown in FIG. 1, the dropper container 10 includes a container body 1, a dropper tube 20, a piston 30, an inner cap 40, an outer cap 50, an operating member 60, a button portion 70, and an inner plug 80. , Packing 90 and. The container body 1 is formed in the shape of a bottomed cylinder and contains the contents. As the content, for example, a drug such as a water-repellent drug applied (discharged) to the human body (skin), a liquid cosmetic, or the like can be used. The components in this embodiment are made of a resin material.

The dropper tube 20, the piston 30, the inner cap 40, the outer cap 50, the operating member 60, the button portion 70, and the packing 90 constitute the dropper assembly 2. Although the details will be described later, when the dropper container 10 is used, the dropper assembly 2 is removed from the container body 1.

(Direction definition)
In the present embodiment, the central axes of the container body 1 and the dropper tube 20 are located on a common axis. Hereinafter, this common axis is referred to as a container axis O, a direction along the container axis O is referred to as a vertical direction, the mouth portion 1a side is referred to as an upper side, and the bottom side of the container body 1 is referred to as a lower direction along the vertical direction. Further, in a plan view seen from the vertical direction, the direction that intersects the container axis O is referred to as the radial direction, and the direction that orbits around the container axis O is referred to as the circumferential direction.

The dropper tube 20 is formed with a dropper protrusion 21, a dropper flange 22, and a locking projection 23. The dropper protrusion 21, the dropper flange 22, and the locking projection 23 are arranged in this order from the upper side to the lower side, and each of them protrudes radially outward from the outer peripheral surface of the dropper pipe 20. The packing 90 is located between the dropper flange portion 22 and the locking projection 23. The dropper flange 22 faces the packing 90 in the vertical direction, and the locking projection 23 is undercut fitted to the packing 90. Therefore, when the dropper tube 20 rises with respect to the container body 1, the packing 90 also rises together with the dropper tube 20. Although not shown, the lower end of the dropper tube 20 is open near the bottom of the container body 1.

The inner cap 40 has a screwing cylinder portion 41, an upper cylinder portion 42, an annular portion 43, a holding cylinder portion 44, a connection portion 45, an inner cylinder portion 46, and a first seal portion 47. ing. The threaded cylinder portion 41 surrounds the mouth portion 1a from the outside in the radial direction. A female threaded portion is formed on the inner peripheral surface of the threaded cylinder portion 41. The female screw portion is screwed to the male screw portion formed on the outer peripheral surface of the mouth portion 1a, so that the screwing cylinder portion 41 is attached to the mouth portion 1a. Therefore, when the inner cap 40 is rotated around the container shaft O with respect to the container body 1, the inner cap 40 moves up and down with respect to the container body 1. An inner protrusion 41b is formed on the outer peripheral surface of the threaded cylinder portion 41 so as to project outward in the radial direction.

The annular portion 43 extends radially inward from the upper end portion of the threaded cylinder portion 41, and is formed in an annular shape in a plan view. The upper cylinder portion 42 extends upward from the annular portion 43. A first engaging portion 42a is formed on the outer peripheral surface of the upper cylinder portion 42. The first engaging portion 42a of the present embodiment is a spiral groove. The holding cylinder portion 44 extends upward from the inner peripheral edge of the annular portion 43. The holding cylinder portion 44 holds the piston 30. The inner cylinder portion 46 is located inside the holding cylinder portion 44 in the radial direction. The connecting portion 45 connects the upper end portion of the holding cylinder portion 44 and the upper end portion of the inner cylinder portion 46. The first seal portion 47 extends downward from the lower end of the inner cylinder portion 46 and is formed in a cylindrical shape.

The upper end portion of the dropper tube 20 is radially sandwiched by the holding cylinder portion 44 and the inner cylinder portion 46. At the lower end of the holding cylinder portion 44, a protrusion 44a protruding inward in the radial direction is formed. The protrusion 44a is undercut fitted to the dropper protrusion 21 of the dropper tube 20. With these configurations, the dropper tube 20 is fixed to the inner cap 40.

The outer cap 50 has a peripheral wall 51 and a top wall 52. The peripheral wall 51 surrounds the inner cap 40, the operating member 60, and the button portion 70 from the radial outside. An outer protrusion 51b is formed on the inner peripheral surface of the peripheral wall 51 so as to project inward in the radial direction. The outer protrusion 51b faces the inner protrusion 41b in the vertical direction, and is located below the inner protrusion 41b. A vertical gap is provided between the outer protrusion 51b and the inner protrusion 41b. The outer cap 50 can be raised with respect to the inner cap 40 until the outer protrusion 51b abuts on the inner protrusion 41b. A vertical rib 53 that protrudes inward in the radial direction and extends in the vertical direction is formed on the inner peripheral surface of the peripheral wall 51. A plurality of vertical ribs 53 are formed at intervals in the circumferential direction, and a detent 62 for the actuating member 60 is located between the vertical ribs 53. As a result, the relative rotation of the outer cap 50 and the operating member 60 around the container shaft O is restricted. The number of vertical ribs 53 may be one, and a plurality of detents 62 may be formed on the actuating member 60 so as to sandwich the vertical ribs 53 in the circumferential direction.

Below the vertical rib 53 on the peripheral wall 51, a fitting protrusion 54 projecting inward in the radial direction is formed. By undercut fitting the fitting protrusion 54 to the operating member 60, the lowering of the operating member 60 with respect to the outer cap 50 is restricted.
The top wall 52 extends radially inward from the upper end of the peripheral wall 51. A through hole 52a is formed in the top wall 52.

As shown in FIG. 2, a plurality of inner engaging portions 41a are formed on the inner cap 40, and a plurality of outer engaging portions 51a are formed on the outer cap 50. The plurality of inner engaging portions 41a project radially outward from the outer peripheral surface of the screwing cylinder portion 41, and are arranged at intervals in the circumferential direction. The plurality of outer engaging portions 51a project radially inward from the inner peripheral surface of the peripheral wall 51, and are arranged at intervals in the circumferential direction. A gap in the circumferential direction (R direction in FIG. 2) is formed between the inner engaging portion 41a and the outer engaging portion 51a.

When the outer cap 50 is rotated with respect to the container body 1 around the container axis O (R direction in FIG. 2), the outer cap 50 becomes the inner cap 40 until the outer engaging portion 51a abuts on the inner engaging portion 41a. However, when the outer cap 50 is further rotated with respect to the container body 1, the outer cap 50 and the inner cap 40 are integrally rotated with respect to the container body 1. That is, the outer engaging portion 51a and the inner engaging portion 41a regulate the rotation of the outer cap 50 around the container shaft O by a predetermined amount or more with respect to the inner cap 40. While the outer cap 50 is rotating with respect to the inner cap 40, the inner cap 40 does not rotate with respect to the container body 1. The R direction in FIG. 2 is a direction in which the inner cap 40 is loosened from being screwed to the mouth portion 1a. Hereinafter, the R direction is referred to as a loosening direction R.

As shown in FIG. 1, the operating member 60 has an engaging cylinder portion 61, a detent 62, a partition wall 63, a columnar portion 64, a second seal portion 65, and a sliding cylinder portion 66. ing. The engaging cylinder portion 61 surrounds the upper cylinder portion 42 from the outside in the radial direction. A second engaging portion 61a is formed on the inner peripheral surface of the engaging cylinder portion 61. The second engaging portion 61a of the present embodiment is a protrusion that protrudes radially inward from the engaging cylinder portion 61. When the second engaging portion 61a, which is a protrusion, is located inside the first engaging portion 42a, which is a spiral groove, the operating member 60 rotates about the container axis O with respect to the inner cap 40. , The operating member 60 moves up and down with respect to the inner cap 40.

The detent 62 projects radially outward from the engaging cylinder portion 61. The partition wall 63 extends radially inward from the engaging cylinder portion 61. A plurality of communication holes 63a are formed in the partition wall 63. The number of communication holes 63a may be one. The columnar portion 64 extends downward from the radial center portion of the partition wall 63. The columnar portion 64 has a hollow shape, but may have a solid shape. The second seal portion 65 is formed in a cylindrical shape extending downward from the lower end of the columnar portion 64. The second seal portion 65 is fitted inside the first seal portion 47. In the present embodiment, the first seal portion 47 and the second seal portion 65 form a seal portion that switches communication between the inside of the dropper pipe 20 and the inside of the working space S described later and the cutoff thereof.

The sliding cylinder portion 66 extends downward from the partition wall 63. The sliding cylinder portion 66 is located between the upper cylinder portion 42 and the holding cylinder portion 44 in the radial direction. Further, the piston 30 is arranged between the sliding cylinder portion 66 and the holding cylinder portion 44.
The piston 30 has a mounting portion 31, a connecting portion 32, and a sliding portion 33. The mounting portion 31 is formed in a cylindrical shape and is externally fitted to the holding tubular portion 44. As a result, the piston 30 is fixed to the inner cap 40. The connecting portion 32 extends radially outward from the intermediate portion in the vertical direction of the mounting portion 31, and is formed in an annular shape in a plan view. The sliding portion 33 extends vertically from the radially outer end of the connecting portion 32 and is in contact with the inner peripheral surface of the sliding cylinder portion 66. The sliding portion 33 is formed to be thin and elastically deformable.

The button unit 70 has an operation unit 71 and a fixing unit 72. The fixing portion 72 is formed in an annular shape in a plan view, and is sandwiched and fixed between the operating member 60 and the outer cap 50. Therefore, the operating member 60, the outer cap 50, and the button portion 70 move up and down as a unit, and the position of the button portion 70 with respect to the outer cap 50 does not change. The operation unit 71 is an elastic film curved so as to be convex upward, and can be elastically deformed downward. The operation unit 71 is made of an elastically deformable material such as rubber or elastomer. Through the through hole 52a of the outer cap 50, the operating portion 71 projects upward from the top wall 52 of the outer cap 50.

In the present embodiment, the space surrounded by the operating member 60, the piston 30, and the inner cap 40 is referred to as an operating space S. The volume of the working space S increases or decreases as the working member 60 moves up and down with respect to the inner cap 40 (see FIG. 3). When the operating member 60 moves up and down with respect to the inner cap 40, the sliding portion 33 of the piston 30 slides with respect to the sliding cylinder portion 66 of the operating member 60. The working space S communicates with the internal space of the operation unit 71 (the space between the operation unit 71 and the partition wall 63) by the communication hole 63a formed in the partition wall 63. The volume of the internal space of the operation unit 71 increases or decreases as the operation unit 71 elastically deforms.

The inner plug 80 has a fixed cylinder portion 81, an ironing piece 82, and a flange portion 83. The fixed cylinder portion 81 is fitted in the mouth portion 1a. The ironing piece 82 projects radially inward from the fixed cylinder portion 81 and is in contact with the outer peripheral surface of the dropper tube 20. The ironing piece 82 is formed so as to be elastically deformable, and when the dropper tube 20 is detached upward from the container body 1, the contents adhering to the outer peripheral surface of the dropper tube 20 are scraped off. A plurality of ventilation holes 82a are formed in the ironing piece 82 at intervals in the circumferential direction. The flange portion 83 extends radially outward from the upper end of the fixed cylinder portion 81 and is formed in an annular shape in a plan view. The flange portion 83 is in contact with the upper end surface of the mouth portion 1a.

The packing 90 is formed of an elastic body such as rubber. The packing 90 has an annular packing main body 91, a plurality of convex portions 92, and a plurality of concave portions 93. Each convex portion 92 protrudes downward from the packing main body 91, and each concave portion 93 is recessed downward from the upper surface of the packing main body 91. As shown in FIG. 4, the convex portions 92 and the concave portions 93 are arranged at intervals in the circumferential direction, and the positions in the circumferential direction are the same as each other. That is, each concave portion 93 is arranged directly above each convex portion 92. Each concave portion 93 and each convex portion 92 overlap each other in a plan view. In a state where the inner cap 40 is tightened to the mouth portion 1a of the container body 1, the packing 90 is sandwiched between the flange portion 83 of the inner plug 80 and the annular portion 43 of the inner cap 40 in a compressed state. Therefore, an upward urging force due to the elastic restoring force of the packing 90 acts on the inner cap 40. Since the concave portion 93 is arranged substantially directly above the convex portion 92, when the packing 90 is compressed, the convex portion 92 is smoothly crushed upward. As a result, the sealing property between the inner plug 80 and the inner cap 40 by the packing 90 is satisfactorily ensured.

Next, the operation of the dropper container 10 configured as described above will be described.

In the unused state of the dropper container 10 (state at the time of shipment), as shown in FIG. 1, the operating member 60 is located at the lower end position with respect to the inner cap 40. In this state, the second seal portion 65 is fitted inside the first seal portion 47, and the inside of the dropper pipe 20 and the working space S are sealed. Therefore, the contents in the dropper tube 20 are suppressed from flowing into the working space S.

When the outer cap 50 is rotated with respect to the container body 1 in the loosening direction R around the container shaft O from the state shown in FIG. 1, the outer engaging portion 51a abuts on the inner engaging portion 41a (see FIG. 2). The outer cap 50 rotates with respect to the inner cap 40. At this time, since the relative rotation between the outer cap 50 and the operating member 60 is regulated by the rotation stopper 62 and the vertical rib 53, the operating member 60 also rotates together with the outer cap 50. That is, the operating member 60 also rotates with respect to the inner cap 40.

When the outer cap 50 is rotated in the loosening direction R, the frictional force acting between the operating member 60 and the piston 30 also exerts a rotational force in the loosening direction R on the piston 30 and the inner cap 40. However, since the inner cap 40 is upwardly urged by the elastic restoring force of the packing 90, the female screw portion of the screwing cylinder portion 41 and the male screw portion of the mouth portion 1a are in pressure contact with each other in the vertical direction. Therefore, the rotational torque of the inner cap 40 with respect to the mouth portion 1a is large, and even if the frictional force generated between the operating member 60 and the piston 30 acts, the inner cap 40 does not rotate with respect to the mouth portion 1a and the packing 90. As a result, the state in which the inner cap 40 and the inner plug 80 are sealed is maintained.

When the actuating member 60 rotates with respect to the inner cap 40, the first engaging portion 42a and the second engaging portion 61a engage with each other, and the actuating member 60 rises with respect to the inner cap 40. As a result, as shown in FIG. 3, the volume of the working space S is increased, and the second seal portion 65 is separated upward from the first seal portion 47. As the volume of the working space S increases, the pressure inside the working space S becomes negative, and the pressure inside the dropper tube 20 also becomes negative. Therefore, the contents of the container body 1 are sucked up into the dropper tube 20. This series of operations is called "sucking operation". During the suction operation, the packing 90 maintains a sealed state between the inner cap 40 and the inner plug 80, so that the inside of the container body 1 becomes a negative pressure.

The amount of the contents sucked into the dropper tube 20 by the sucking operation is determined by the amount of change in the volume of the working space S. Further, the amount of change in the volume of the working space S is determined by the amount of increase of the working member 60 with respect to the inner cap 40, that is, the amount of rotation of the working member 60 with respect to the inner cap 40. The amount of rotation is determined by the distance between the outer engaging portion 51a and the inner engaging portion 41a in the circumferential direction. Therefore, in the present embodiment, it is possible to suck up a substantially fixed amount of contents into the dropper tube 20 by rotating the outer cap 50 with respect to the inner cap 40.

When the outer cap 50 rotates in the loosening direction R with respect to the inner cap 40 by a predetermined amount, the outer engaging portion 51a comes into contact with the inner engaging portion 41a. When the outer cap 50 is further rotated in the loosening direction R with respect to the container body 1 in a state where the outer engaging portion 51a is in contact with the inner engaging portion 41a in the loosening direction R, the inner cap 40 is also a container together with the outer cap 50. It rotates with respect to the main body 1. At this time, the female screw portion of the screwing cylinder portion 41 and the male screw portion of the mouth portion 1a are screwed together, and the inner cap 40 rises with respect to the container body 1. By raising the inner cap 40, the compressed state of the packing 90 is released, and the seal between the inner cap 40 and the inner plug 80 is also opened. As a result, the outside air is introduced into the container body 1 and the negative pressure is eliminated. When the negative pressure is eliminated, the amount of the contents sucked up in the dropper tube 20 may become unstable (change) due to a sudden pressure change, but the larger the viscosity of the contents, the more sucked up. The contents are stable and easy to stay in the dropper tube 20. For example, when the viscosity of the contents is 0.10 [Pa · s] or more, the amount of the contents sucked up and held by the dropper tube 20 is less likely to vary.

Even after the inner cap 40 rises with respect to the container body 1, the outer protrusion 51b abuts on the inner protrusion 41b from below, so that the inner cap 40 is prevented from falling downward from the outer cap 50. When the screwing of the screwing cylinder portion 41 to the mouth portion 1a is completely released, the dropper assembly 2 is detached upward from the container body 1 as shown in FIG. After that, for example, by grasping the outer cap 50 by hand and pressing the operation unit 71 with the thumb, the contents held in the dropper tube 20 can be discharged.

When the dropper assembly 2 is reattached to the container body 1, when the outer cap 50 is rotated with respect to the container body 1 in the tightening direction (rotational direction opposite to the loosening direction R), it engages with the outer engaging portion 51a inside. The outer cap 50 idles with respect to the inner cap 40 until the portion 41a abuts in the tightening direction. During that time, the first engaging portion 42a and the second engaging portion 61a are engaged with each other, and the operating member 60 and the outer cap 50 are lowered with respect to the inner cap 40 and the container body 1. As a result, the volume of the working space S is reduced, but since the second sealing portion 65 has not yet entered the first sealing portion 47 at this stage, the air in the working space S is pushed out into the dropper pipe 20. Further, the extruded air is discharged into the container body 1 through the dropper pipe 20 and discharged to the outside of the container body 1 through the exhaust passage. The exhaust passage has a ventilation hole 82a of the iron piece 82, a gap between the inner plug 80 and the packing 90 (particularly, a gap between the convex portions 92), and a male screw portion and a screwing cylinder portion of the mouth portion 1a. It is composed of a gap between the female screw portion of 41 and the female screw portion. By discharging the air in this way, it is possible to suppress the increase in pressure in the working space S and the dropper pipe 20, and it is possible to suppress the variation in the suction amount of the contents in the next suction operation.

While the outer cap 50 is idling with respect to the inner cap 40 in the tightening direction, the inner cap 40 rotates in the tightening direction due to the frictional force acting between the operating member 60 and the piston 30, but the packing 90 When the recess 93 comes into contact with the flange portion 83 of the inner plug 80, the lowering of the inner cap 40 is restricted. As a result, the phenomenon that the gap between the packing 90 and the flange portion 83 is closed before the air in the working space S is discharged is suppressed, and the air in the working space S can be discharged more reliably.

After that, when the outer cap 50 is further rotated in the tightening direction, the outer engaging portion 51a and the inner engaging portion 41a come into contact with each other in the tightening direction, and the inner cap 40 also rotates in the tightening direction with respect to the container body 1. As a result, the packing 90 is compressed again to return to the state shown in FIG. 1, and the space between the mouth portion 1a and the inner cap 40 is sealed.
As described above, in order to exhaust the air in the working space S through the exhaust passage and stabilize the suction amount, after the second seal portion 65 has entered the first seal portion 47, the outer engagement is performed. It is preferable that the portion 51a and the inner engaging portion 41a are in contact with each other in the tightening direction.

The inner plug 80 may be omitted, and the packing 90 may be in direct contact with the mouth portion 1a. In this case as well, the packing 90 is compressed by the inner cap 40, so that the inner cap 40 can be urged upward and the mouth portion 1a and the inner cap 40 can be sealed. Regardless of the presence or absence of the inner plug 80, the packing 90 seals between the inner cap 40 and the mouth portion 1a and is compressed and deformed to urge the inner cap 40 upward.

As described above, the dropper container 10 of the present embodiment has a bottomed cylindrical container body 1 for accommodating the contents, an inner cap 40 screwed to the mouth portion 1a of the container body 1, and an inner cap 40. The dropper tube 20 fixed to the outer cap 40, the outer cap 50 whose rotation around the container shaft O with respect to the inner cap 40 is restricted by a predetermined amount or more, and the inner cap whose rotation around the container shaft O with respect to the outer cap 50 is restricted. An operating member 60 that moves up and down with respect to the inner cap 40 by rotating around the container shaft O with respect to 40, and an operation unit 71 protruding upward through a through hole 52a formed in the top wall 52 of the outer cap 50. The piston 30 and the sliding cylinder portion 66, which slide with each other when the operating member 60 moves up and down with respect to the inner cap 40, are sealed between the inner cap 40 and the mouth portion 1a, and are compressed and deformed. It is provided with a packing 90 for upwardly urging the inner cap 40. Then, an operating space S is formed between the operating member 60 and the inner cap 40 so as to communicate with the internal space of the dropper pipe 20 and to change the volume by sliding the piston 30 and the sliding cylinder portion 66 with each other. Has been done.

According to such a configuration, the operation unit 71 is not involved in the operation for sucking the contents into the dropper tube 20, and the operation unit 71, the outer cap 50, and the operating member 60 are integrated with respect to the inner cap 40. Since it rises, the amount of protrusion of the operation unit 71 from the outer cap 50 does not change when the contents are sucked up. Therefore, according to the present embodiment, it is possible to provide the dropper container 10 in which the change in the amount of protrusion of the operation unit 71 with respect to the outer cap 50 is suppressed.
Further, since the amount of increase in the volume of the working space S is determined based on the amount of rotation of the outer cap 50 with respect to the inner cap 40, the operation of rotating the outer cap 50 with respect to the inner cap 40 by a predetermined amount causes the dropper tube 20 to be rotated. It is possible to suck up a substantially fixed amount of contents.
Further, since it is not necessary to use a metal spring or the like as a constituent member, it is possible to reduce the labor of separate disposal.

Further, the packing 90 has an annular packing main body 91, a concave portion 93 that is recessed downward from the upper surface of the packing main body 91, and a convex portion 92 that protrudes downward from the packing main body 91, and is a concave portion in a plan view. The 93 and the convex portion 92 overlap each other. As a result, when the packing 90 is compressed up and down, the packing 90 is smoothly elastically deformed so that the convex portion 92 enters the concave portion 93, and the inner cap 40 can be urged upward.

Further, a plurality of convex portions 92 are formed on the packing main body 91 at intervals in the circumferential direction. As a result, the inner cap 40 is urged upward in a well-balanced manner, and it is possible to prevent the inner cap 40 from tilting with respect to the mouth portion 1a. Further, when the inner cap 40 is tightened with respect to the mouth portion 1a, the space between the convex portions 92 can be used as an exhaust passage. As a result, it is possible to prevent the internal pressure of the container body 1 from increasing and the amount of the contents sucked up to the dropper tube 20 from the next time onward to vary.

Further, between the operating member 60 and the inner cap 40, when the operating member 60 is located at the lower end position with respect to the inner cap 40, the communication between the inside of the dropper pipe 20 and the inside of the operating space S is cut off and the operation is performed. A seal portion (first seal portion 47 and second seal portion 65) is formed to communicate the inside of the dropper pipe 20 and the inside of the working space S when the member 60 rises from the lower end position with respect to the inner cap 40. .. With this configuration, it is possible to prevent the contents from flowing into the working space S through the dropper pipe 20 when the dropper container 10 is distributed. Therefore, for example, it is possible to prevent the operation unit 71 from deteriorating due to contact with the contents of the operation unit 71 configured as an elastic film.

(Second Embodiment)
Next, the second embodiment according to the present invention will be described, but the basic configuration is the same as that of the first embodiment. Therefore, the same reference numerals are given to the same configurations, the description thereof will be omitted, and only the different points will be described.
As shown in FIG. 6, in the dropper container 10A of the present embodiment, the shapes of the mouth portion 1a of the container body 1, the inner cap 40, and the packing 90 are different from those of the first embodiment.

The packing 90 has an annular packing body 91, but the concave portion 93 and the convex portion 92 are not formed. A plurality of urging protrusions 1c are formed on the neck ring 1b of the mouth portion 1a. Each urging projection 1c projects upward from a part of the neck ring 1b in the circumferential direction. The urging protrusions 1c are arranged at intervals in the circumferential direction. The number of the urging protrusions 1c may be one or two or more.

A plurality of elastic arms 49 that can be elastically deformed are formed in the threaded cylinder portion 41 of the inner cap 40. Each elastic arm 49 projects downward from the lower end portion of the threaded cylinder portion 41, and is arranged at intervals in the circumferential direction. The number of elastic arms 49 may be the same as the number of urging protrusions 1c. The elastic arm 49 faces the urging projection 1c in the vertical direction.

As shown in FIG. 7, each elastic arm 49 has a base end portion 49a, an arm portion 49b, and a tip projection 49c. The base end portion 49a is connected to the screwing cylinder portion 41 and projects downward from the screwing cylinder portion 41. The arm portion 49b extends in the circumferential direction from the base end portion 49a. A vertical gap is provided between the arm portion 49b and the screwing cylinder portion 41. In other words, the arm portion 49b is supported in a cantilever shape with the base end portion 49a as a base point. The tip protrusion 49c projects downward from the tip of the arm portion 49b (the end opposite to the base end portion 49a in the circumferential direction).

In the state where the inner cap 40 is tightened to the mouth portion 1a (FIG. 7), the proximal end portion 49a and the tip protrusion 49c sandwich the urging protrusion 1c in the circumferential direction, and the arm portion 49b holds the urging protrusion 1c. Has been pushed upwards by. As a result, the elastic arm 49 is elastically deformed upward, and the inner cap 40 is upwardly urged by the elastic restoring force of the elastic arm 49.

As described above, in the dropper container 10A of the present embodiment, an elastic arm 49 is formed at the lower end of the inner cap 40 to engage with the mouth portion 1a and urge the inner cap 40 upward. As a result, in addition to the upward urging force due to the compression of the packing 90, the upward urging force by the elastic arm 49 acts on the inner cap 40, and the upward urging force acting on the inner cap 40 can be more stabilized.

Further, since a plurality of elastic arms 49 and urging protrusions 1c are arranged at intervals in the circumferential direction, the upward urging force of the elastic arms 49 acts on the inner cap 40 in a well-balanced manner. Therefore, it is possible to prevent the inner cap 40 from tilting with respect to the mouth portion 1a.

When the dropper assembly 2 of the present embodiment is attached to the container body 1, the operating member 60 and the operating member 60 are used while the outer cap 50 is idling with respect to the inner cap 40 in the tightening direction, as in the first embodiment. The inner cap 40 rotates in the tightening direction due to the frictional force acting between the piston 30 and the piston 30. When the inner cap 40 rotates by a predetermined amount in the tightening direction and the elastic arm 49 comes into contact with the urging protrusion 1c of the mouth portion 1a, the lowering of the inner cap 40 is restricted. In this state, since a vertical gap is provided between the packing 90 and the flange portion 83, the phenomenon that the mouth portion 1a is sealed by the packing 90 before the air in the working space S is discharged is suppressed. , The air in the working space S can be discharged more reliably. After that, when the outer cap 50 is further rotated in the tightening direction, the outer engaging portion 51a and the inner engaging portion 41a come into contact with each other in the tightening direction, and the inner cap 40 also rotates in the tightening direction with respect to the container body 1 and is elastic. The tip protrusion 49c of the arm 49 gets over the urging protrusion 1c in the tightening direction. As a result, the elastic arm 49 is pushed upward by the urging protrusion 1c and elastically deformed, and the packing 90 is compressed again to return to the initial state and seal between the mouth portion 1a and the inner cap 40.

The surface of the urging protrusion 1c and the tip protrusion 49c facing the circumferential direction so that the tip protrusion 49c can easily get over the urging protrusion 1c in the circumferential direction when the inner cap 40 rotates with respect to the mouth portion 1a. An inclined surface is formed for each.

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.

For example, the first engaging portion 42a of the embodiment is a spiral groove and the second engaging portion 61a is a protrusion, but the shapes of the first engaging portion 42a and the second engaging portion 61a are appropriately changed. It is possible. Specifically, the first engaging portion 42a may be a male screw portion and the second engaging portion 61a may be a female screw portion. Even with such a configuration, when the operating member 60 rotates about the container axis O with respect to the inner cap 40, the operating member 60 can be moved up and down with respect to the inner cap 40.

Further, in the above-described embodiment, the operation unit 71 itself is an elastic film, but for example, another member may be arranged above the elastic film and the member may be used as the operation unit. Also in this case, the elastic film is elastically deformed by pressing the member which is the operation unit, and the volume of the internal space of the elastic film is reduced, so that the contents can be discharged.

In addition, it is possible to appropriately replace the components in the above-described embodiment with well-known components without departing from the spirit of the present invention, and the above-described embodiments and modifications may be appropriately combined.
For example, a dropper container having both the packing 90 having the shape described in the first embodiment and the elastic arm 49 and the urging protrusion 1c described in the second embodiment may be adopted.

1 ... Container body 1a ... Mouth 10, 10A ... Dropper container 20 ... Dropper tube 30 ... Piston 40 ... Inner cap 41c ... Second protrusion 47 ... First seal (seal) 49 ... Elastic arm 50 ... Outer cap 60 ... Acting member 65 ... Second seal part (seal part) 66 ... Sliding cylinder part 71 ... Operation part O ... Container shaft S ... Operating space

Claims (4)

A bottomed cylindrical container body that houses the contents,
The inner cap screwed to the mouth of the container body and
A dropper tube fixed to the inner cap and opened in the container body,
An outer cap whose rotation around the container axis is restricted to a predetermined amount or more with respect to the inner cap,
An actuating member that is restricted from rotating around the container axis with respect to the outer cap and moves up and down with respect to the inner cap by rotating around the container axis with respect to the inner cap.
An operation unit protruding upward through a through hole formed in the top wall of the outer cap,
A piston and a sliding cylinder portion that slide with each other when the operating member moves up and down with respect to the inner cap.
A packing that seals between the inner cap and the mouth portion and urges the inner cap upward by being compressed and deformed is provided.
An operating space is formed between the operating member and the inner cap so as to communicate with the internal space of the dropper pipe and to increase the volume by sliding the piston and the sliding cylinder portion with each other. , Dropper container. The packing has an annular packing main body, a concave portion that is recessed downward from the upper surface of the packing main body, and a convex portion that protrudes downward from the packing main body.
The dropper container according to claim 1, wherein the concave portion and the convex portion overlap in a plan view. The dropper container according to claim 2, wherein a plurality of the convex portions are formed on the packing body at intervals in the circumferential direction. The dropper container according to any one of claims 1 to 3, wherein an elastic arm that engages with the mouth portion to urge the inner cap upward is formed at the lower end of the inner cap.

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