Ejector

Abstract

To provide a discharge container that can easily separate a biasing member from other members when discarding the discharging container.SOLUTION: A discharge container according to an aspect of the present invention includes: a cylinder whose inside communicates with the inside of a container body; a stem whose inside communicates with the inside of the cylinder and that is provided movable up and down relative to the cylinder; a piston that is linked to a vertical movement of the stem; a push-down head that has a discharge hole for discharging a content liquid inside the container body, and is attached to an upper end of the stem; and a biasing member that supports movably downward with the push-down head in an upward bias state. The push-down head is connected to the upper end of the stem so as to be detached according to the rotation to one side around a central axis along the vertical direction relative to the stem, and at a lower end position, the stem is connected to the cylinder in a state in which upward movement is restricted according to the rotation to one side about a central axis relative to the cylinder.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a dispenser.

Background Art

[0002] Conventionally, as shown in Patent Document 1 below, for example, by pressing a pressing head having a discharge hole against the biasing force of a biasing member, the contents in the cylinder can be discharged from the discharge hole, and by the restoring force of the biasing member, the pressing head is restored and moved upward, and by creating a negative pressure in the cylinder, a dispenser that can suck the contents in the container body into the cylinder is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In this type of dispenser, there is room for improvement in easily separating a biasing member, which is often made of metal, and other members, which are often made of resin, at the time of disposal.

[0005] The present invention provides a dispenser that can easily separate a biasing member and other members at the time of disposal.

Means for Solving the Problems

[0006] In order to solve the above problems, the present invention adopts the following aspects. A discharger according to one aspect of the present invention comprises a cylinder extending vertically and having its inner side communicating with the inside of a container body; a stem extending vertically and having its inner side communicating with the inside of the cylinder, and provided to be movable vertically relative to the cylinder; a piston that can slide vertically within the cylinder in conjunction with the vertical movement of the stem; a push-down head having a discharge hole for discharging the liquid contents of the container body and attached to the upper end of the stem; and a biasing member that supports the push-down head so as to be movable downward in an upward biased state. The push-down head is connected to the upper end of the stem so as to detach when it rotates to one side about a central axis along the vertical direction relative to the stem, and the stem is connected to the cylinder in a state in which upward movement is restricted when it rotates to one side about the central axis relative to the cylinder at its lowered end position.

[0007] According to this embodiment, by moving the stem to the lowered end position and rotating the push head to one side in the circumferential direction, the push head can be detached from the stem while the stem is connected to the cylinder. This prevents the stem from rotating together with the push head during the detachment operation. As a result, the detachment operation of the push head becomes easier, and the biasing member and other members can be easily separated when disposing of the discharger. Furthermore, since the stem can be connected to the lower end inside the cylinder when the stem is in the lowered position, upward movement of the stem relative to the cylinder can be restricted even after the push head has been removed from the stem. As a result, the discharger can be made more compact in the vertical direction after the push head and biasing member have been removed. Consequently, bulkiness during disposal can be reduced.

[0008] In the discharger according to the above embodiment, it is preferable that the push head is configured to be detachable from the stem by releasing the screwing of the head screw portion provided on the push head and the first stem screw portion provided on the stem as the push head rotates to one side about the central axis relative to the stem, and that the stem is configured to be attachable to the cylinder by screwing the second stem screw portion provided on the stem and the cylinder screw portion provided on the cylinder as the stem rotates to one side about the central axis relative to the cylinder. According to this embodiment, the relationship between the push head and the stem, and between the stem and the cylinder, is a so-called reverse thread relationship. Therefore, the mounting state between the push head and the stem can be stabilized, and the stem can be easily connected to the cylinder when the stem is in the lowered end position.

[0009] In the discharger according to the above embodiment, it is preferable that a restricting portion for restricting the downward movement of the pressing head relative to the cylinder when the stem is below the uppermost position and above the lowered end position is provided detachably from between the pressing head and the cylinder. According to this embodiment, when dispensing the liquid contents, it is possible to prevent the stem from reaching the lowered end position when the push head is pressed down. Therefore, it is possible to prevent the stem and cylinder from unexpectedly connecting, and to prevent the push head from being hindered from returning upward by the connection between the stem and cylinder. [Effects of the Invention]

[0010] According to an aspect of the present invention, the biasing member and other members can be easily separated when disposing of the device. [Brief explanation of the drawing]

[0011] [Figure 1] This is a longitudinal cross-sectional view of the discharge container according to the first embodiment. [Figure 2] This is an explanatory diagram of the operation of the discharge container according to the first embodiment. [Figure 3]This is an explanatory diagram of the operation of the discharge container according to the first embodiment. [Figure 4] This is an explanatory diagram of the operation of the discharge container according to the first embodiment. [Figure 5] This is an explanatory diagram of the operation of the discharge container according to the first embodiment. [Figure 6] This is a longitudinal cross-sectional view of the discharge container according to the second embodiment. [Figure 7] This is a cross-sectional view of the discharge container according to the second embodiment. [Figure 8] This is an explanatory diagram of the operation of the discharge container according to the second embodiment. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. (First Embodiment) As shown in Figure 1, the discharge container 1 of this embodiment comprises a bottomed cylindrical container body 2 in which the liquid contents are contained, and a toped cylindrical discharger 5 that is detachably attached to the mouth 2a of the container body 2. In the following description, each component of the discharge container 1 is assumed to be a molded product made of resin material unless otherwise specified.

[0013] The discharger 5 comprises a cylinder 11, a stem 12, a piston 13, a pressing head 14, a biasing member 15, and a mounting cap 16. The cylinder 11, stem 12, piston 13, and mounting cap 16 are arranged coaxially with a common axis. Hereinafter, the common axis will be referred to as the central axis O, and the direction along the central axis O will be referred to as the vertical direction. In the vertical direction, the side with the pressing head 14 will be considered upward, and the side with the cylinder 11 will be considered downward. Furthermore, the direction that intersects the central axis O when viewed from the vertical direction will be referred to as the radial direction, and the direction that circles around the central axis O will be referred to as the circumferential direction.

[0014] The mounting cap 16 comprises a cap body 21, a sealing cylinder 22, a support cylinder 23, and a covering cylinder 24. The cap body 21 is formed in a roofed cylindrical shape having an annular mounting top wall 21a. In the cap body 21, an internal thread portion is formed on the inner peripheral surface of the peripheral wall portion. The mounting cap 16 is detachably attached to the mouth portion 2a by being screwed onto the external thread portion formed on the mouth portion 2a. In the present embodiment, the mounting cap 16 can be detached from the mouth portion 2a as it rotates in one circumferential direction with respect to the mouth portion 2a. However, the mounting cap 16 may be configured to be attached to the mouth portion 2a as it rotates in one circumferential direction with respect to the mouth portion 2a.

[0015] The seal cylinder 22 projects downward from the mounting top wall 21a. The support cylinder 23 extends downward from the inner peripheral edge of the mounting top wall 21a (the portion located radially inside the seal cylinder 22). A support bottom wall 23a that projects radially inward is formed at the lower end opening edge of the support cylinder 23. The support bottom wall 23a is formed in an annular shape that extends over the entire circumference in the circumferential direction. However, the support bottom wall 23a may be provided intermittently in the circumferential direction. The covering cylinder 24 extends upward from the inner peripheral edge of the mounting top wall 21a.

[0016] The cylinder 11 extends in the vertical direction and the inside thereof communicates with the inside of the container body 2. The cylinder 11 includes a cylinder tube portion 25, a flange portion 26, and a fitting cylinder portion 27. The cylinder tube portion 25 and the fitting cylinder portion 27 are formed in a continuous cylindrical shape in this order from above downward and are inserted into the container body 2.

[0017] The flange portion 26 projects radially outward from the upper end opening edge of the cylinder tube portion 25. The flange portion 26 is fitted into the upper end portion inside the cap body 21. The flange portion 26 is sandwiched vertically between the mouth portion 2a and the mounting top wall 21a. On the upper surface of the flange portion 26 and the lower surface of the mounting top wall 21a, a rotation prevention portion 29 is formed that regulates the relative rotation in the circumferential direction of the flange portion 26 and the mounting top wall 21a by engaging with each other. The rotation prevention portion 29 includes a concave portion and a convex portion that fits into the concave portion.

[0018] The cylinder section 25 is formed in a multi-stage cylindrical shape, with the outer diameter decreasing towards the lower sections. The contents of the liquid drawn up from the container body 2 are contained within the cylinder section 25. The cylinder section 25 comprises a sliding cylinder section 25a and a valve cylinder section 25b. A seal cylinder 22 is tightly fitted into the upper end of the sliding cylinder portion 25a. A support cylinder 23 is inserted into the portion of the sliding cylinder portion 25a that is radially inward from the seal cylinder 22. The support bottom wall 23a is located below the seal cylinder 22 within the sliding cylinder portion 25a. An inlet hole 25c is formed in the sliding cylinder portion 25a, penetrating it radially. The inlet hole 25c connects the inside of the container body 2 and the inside of the sliding cylinder portion 25a. A cylinder thread portion 25d is formed at the lower end of the inner circumferential surface of the sliding cylinder portion 25a. The cylinder thread portion 25d extends spirally downward towards one side in the circumferential direction.

[0019] The valve cylinder portion 25b is smaller in diameter and vertical dimension than the sliding cylinder portion 25a. The lower valve body 30 is fitted inside the valve cylinder portion 25b. The lower valve body 30 opens and closes the lower end opening of the cylinder cylinder portion 25. The lower valve body 30 is a check valve that keeps the lower end opening of the valve cylinder portion 25b closed when the cylinder cylinder portion 25 is pressurized, and opens the lower end opening of the valve cylinder portion 25b when the pressure inside the cylinder cylinder portion 25 is reduced. As a result, when the cylinder cylinder portion 25 is pressurized, the liquid contents inside the cylinder cylinder portion 25 are prevented from returning to the container body 2 through the lower end opening of the cylinder cylinder portion 25, and when the pressure inside the cylinder cylinder portion 25 is reduced, the liquid contents inside the container body 2 flow into the cylinder cylinder portion 25. In the illustrated example, the lower valve body 30 is a three-point valve.

[0020] The fitting cylinder portion 27 has a smaller diameter than the valve cylinder portion 25b, and is larger in the vertical direction. The upper part of the pipe 32 is fitted into the fitting cylinder portion 27 in a liquid-tight manner. The lower end of the pipe 32 is close to the bottom inside the container body 2.

[0021] The stem 12 comprises a stem body 41 and a piston support portion 42. The stem body 41 is formed in a bottomed cylindrical shape that extends vertically. The stem body 41 is inserted into the cylinder 11 with its upper part protruding from the cylinder 11. In this embodiment, the stem body 41 penetrates the support cylinder 23 and the covering cylinder 24 in the vertical direction.

[0022] A communication port 41a is formed in the peripheral wall of the stem body 41. The communication port 41a penetrates the peripheral wall of the stem body 41 in the radial direction. The communication port 41a connects the inside of the stem body 41 to the inside of the cylinder 11.

[0023] An upper threaded portion (first stem threaded portion) 41b is formed at the upper end of the peripheral wall portion of the stem body 41. The upper threaded portion 41b is a spiral male thread that extends downward as it is directed toward one side in the circumferential direction. A fitting projection 41c is formed on the peripheral wall portion of the stem body 41, above the communication opening 41a and below the upper threaded portion 41b, projecting radially outward. The fitting projection 41c extends along the entire circumference of the peripheral wall portion of the stem body 41.

[0024] The piston support portion 42 protrudes radially outward in a flange-like manner from the portion of the stem body 41 located below the communication opening 41a. A lower threaded portion (second stem threaded portion) 42a is formed on the outer circumferential surface of the piston support portion 42. The lower threaded portion 42a is formed in a spiral shape that extends downward as it is directed toward one side in the circumferential direction. A part of the lower threaded portion 42a abuts against a part of the cylinder threaded portion 25d from above when the stem 12 is in the lowered end position (see Figure 2). That is, the stem 12 is configured to be able to move further downward from the lowered end position toward the tightened position (see Figure 3) by being screwed onto the cylinder 11. The piston support portion 42 may also be provided with a communication hole or the like that connects the space above and below the piston support portion 42 in the cylinder cylinder portion 25. In this embodiment, the space above and the space below the piston support portion 42 of the cylinder cylinder portion 25 are in communication with each other through the gap formed between the lower threaded portion 42a and the inner circumferential surface of the cylinder cylinder portion 25.

[0025] The push head 14 is detachably attached to the upper end of the stem body 41 as it rotates around the central axis O relative to the stem body 41. The push head 14 has a discharge hole 14a for discharging the liquid contents inside the container body 2. The push head 14 comprises a mounting cylinder 51, a discharge cylinder 52, and an outer head cylinder 53.

[0026] The mounting cylinder 51 is inserted from above into the inside of the covering cylinder 24 and the support cylinder 23. A head threaded portion 51a is formed in the middle of the mounting cylinder 51 in the vertical direction. The head threaded portion 51a is a spiral female thread that extends downward as it is directed toward one side in the circumferential direction. The head threaded portion 51a is screwed into the upper threaded portion 41b. As a result, the push head 14 is detachably attached to the stem body 41. A fitting recess 51b is formed in the portion of the mounting cylinder 51 located below the head threaded portion 51a. The fitting recess 51b extends continuously along its entire length in the circumferential direction. A fitting projection 41c is fitted into the fitting recess 51b, thereby suppressing loosening between the upper threaded portion 41b and the head threaded portion 51a. A radial gap is provided between the portion of the inner circumferential surface of the mounting cylinder 51 located below the fitting recess 51b and the outer circumferential surface of the stem body 41.

[0027] The discharge tube 52 protrudes radially outward from the mounting tube 51. The tip opening of the discharge tube 52 functions as the discharge hole 14a described above. The head outer cylinder 53 surrounds the mounting cylinder 51 from the radial outside. The lower end edge of the head outer cylinder 53 is located below the upper end edge of the covering cylinder 24. In the illustrated example, the inner circumferential surface of the lower end of the head outer cylinder 53 is in contact with or close to the outer circumferential surface of the upper end of the covering cylinder 24. This prevents water or other substances from entering the discharger 5 through the space between the head outer cylinder 53 and the covering cylinder 24.

[0028] The piston 13 is fitted into the cylinder 11 so as to be able to slide up and down in conjunction with the up and down movement of the stem 12. The piston 13 comprises a piston outer cylinder 61, a piston inner cylinder 62, and a connecting portion 63.

[0029] The piston outer cylinder 61 is capable of sliding up and down on the inner circumferential surface of the sliding cylinder portion 25a. The upper part of the piston inner cylinder 62 is inserted between the inner circumferential surface of the mounting cylinder 51 and the outer circumferential surface of the stem body 41. The upper end of the piston inner cylinder 62 is in liquid-tight contact with the inner circumferential surface of the mounting cylinder 51, allowing for vertical sliding. The lower part of the piston inner cylinder 62 protrudes downward from the mounting cylinder 51. The connecting portion 63 connects the inner circumferential surface of the piston outer cylinder 61 and the outer circumferential surface of the piston inner cylinder 62. The connecting portion 63 is formed in a plate shape with its front and back surfaces facing in the vertical direction. The upper surface of the connecting portion 63 abuts against the lower surface of the support bottom wall 23a of the mounting cap 16 and is located below the lower end of the mounting cylinder 51.

[0030] When the push head 14 is not pressed (at the uppermost position of the stem 12), the lower end edge of the piston inner cylinder 62 is supported by the piston support portion 42. This blocks communication between the portion of the sliding cylinder portion 25a located below the piston 13 and the communication port 41a. When the push head 14 is pressed, as shown in Figure 2, as the stem 12 descends, the piston support portion 42 moves downward away from the lower end edge of the piston inner cylinder 62. This allows communication between the portion of the sliding cylinder portion 25a located below the piston 13 and the communication port 41a. At this time, the lower end edge of the mounting cylinder 51 comes into contact with the piston 13. As a result, if the push head 14 is continued to be pressed, the piston 13 will also descend. After the liquid contents are dispensed, as the stem 12 and the push head 14 return to their original position upwards, the piston support portion 42 comes into contact with the lower end edge of the piston inner cylinder 62, causing the piston 13 to also return to its original position upwards.

[0031] The biasing member 15 supports the pressing head 14 so that it can move downward while biased upward. The biasing member 15 is, for example, a metal coil spring arranged coaxially with the central axis O. The biasing member 15 surrounds the mounting cylinder 51 and is surrounded by the head outer cylinder 53, the covering cylinder 24, and the support cylinder 23. In other words, the biasing member 15 is housed in the space enclosed by the mounting cylinder 51, the head outer cylinder 53, the covering cylinder 24, and the support cylinder 23.

[0032] The lower end of the biasing member 15 is supported by the upper surface of the support bottom wall 23a. The upper end of the biasing member 15 is supported by a support step portion 51d formed on the mounting cylinder 51. The support step portion 51d is a downward-facing surface formed by reducing the diameter of the portion of the mounting cylinder 51 located above the head screw portion 51a. The support step portion 51d faces the upper surface of the support bottom wall 23a. The support step portion 51d is located above the covering cylinder 24 of the mounting cap 16.

[0033] Next, a method for discharging the liquid contents from the discharge hole 14a in the discharge container 1 described above will be explained. As shown in Figures 1 and 2, when the push head 14 is pushed down, the push head 14 and the stem 12 move downward relative to the piston 13. As a result, the piston support portion 42 moves downward away from the lower end of the piston inner cylinder 62, and the portion located below the piston 13 within the cylinder barrel 25 communicates with the communication port 41a. At this time, the lower end of the mounting cylinder 51 comes into contact with the piston 13. Consequently, if the push head 14 is continued to be pushed down, the biasing member 15 compresses and deforms, and the piston 13 also moves downward, pressurizing the inside of the cylinder barrel 25. As a result, the liquid inside the cylinder barrel 25 is sent to the push head 14 through the gap between the piston support portion 42 and the lower end of the piston inner cylinder 62, the communication port 41a, and the inside of the stem body 41. The liquid sent to the push head 14 is discharged from the discharge hole 14a through the inside of the mounting cylinder 51 and the discharge cylinder 52. During this process, the lower valve body 30 maintains the lower end opening of the valve cylinder portion 25b closed. When the stem 12 moves to its lowered end position, a portion of the lower threaded portion 42a comes into contact with a portion of the cylinder threaded portion 25d from above.

[0034] Subsequently, when the downward pressure on the push head 14 is released, the biasing member 15 deforms to its original state, causing the push head 14 and stem 12 to move upward. During this process, the piston support portion 42 comes into contact with the lower end of the piston inner cylinder 62, blocking communication between the portion of the cylinder cylinder portion 25 located below the piston 13 and the communication port 41a. In this state, the piston 13 moves upward together with the push head 14 and stem 12. This creates negative pressure inside the cylinder cylinder portion 25, causing the lower valve body 30 to open the lower end opening of the valve cylinder portion 25b. As a result, the liquid contents inside the container body 2 flow into the cylinder cylinder portion 25 through the pipe 32.

[0035] Next, we will explain how to separate the biasing member 15 from the other members of the discharger 5. First, similar to the discharge method described above, the push head 14 is pushed down to move the stem 12 to its lowered end position. Then, as shown in Figure 2, a portion of the lower threaded portion 42a comes into contact with another portion of the lower threaded portion 42a from above. In this state, a rotational force is applied to the push head 14 in one direction in the circumferential direction. As shown in Figure 3, the lower threaded portion 42a engages with the cylinder threaded portion 25d, causing the stem 12 to be screwed into the cylinder 11. As a result, the stem 12, which is at its lowered end position, descends further toward the tightening position. Note that in the initial stages of rotation of the push head 14, the tightening torque between the upper threaded portion 41b and the head threaded portion 51a is greater than the tightening torque acting between the lower threaded portion 42a and the cylinder threaded portion 25d. Therefore, in the initial stages of rotation, the push head 14 and the stem 12 rotate together relative to the cylinder 11. Furthermore, since anti-rotation portions 29 are formed on the upper surface of the flange portion 26 and the lower surface of the mounting top wall 21a, even if a rotational force is applied to the pressing head 14, the frictional force acting between the pressing head 14 and the cylinder 11 restricts the cylinder 11 from rotating relative to the mounting cap 16.

[0036] When the tightening torque between the upper threaded portion 41b and the head threaded portion 51a falls below the tightening torque acting between the lower threaded portion 42a and the cylinder threaded portion 25d (for example, when the stem 12 is fully screwed into the cylinder 11), the stem 12 reaches the fastening position. As shown in Figure 4, after the stem 12 reaches the fastening position, if the push head 14 is further rotated in one direction in the circumferential direction, the push head 14 rotates relative to the stem 12. This releases the screwing between the head threaded portion 51a and the upper threaded portion 41b. In other words, the relationship between the push head 14 and the stem 12, and between the stem 12 and the cylinder 11, is a so-called reverse thread relationship. In the later stages of the rotation of the push head 14, the push head 14 rotates independently of the cylinder 11 and the stem 12. As a result, the push head 14 detaches from the stem 12. Furthermore, when the stem 12 is in the fastening position, its upward movement relative to the cylinder 11 is restricted. Therefore, even after the push head 14 is removed from the stem 12, the stem 12 maintains its fastening position.

[0037] As shown in Figure 5, when the pressing head 14 detaches from the stem 12, the support of the biasing member 15 by the pressing head 14 is released, causing the biasing member 15 to return to its original shape. As a result, the upper end of the biasing member 15 protrudes from the covering cylinder 24. In this state, the upper end of the biasing member 15 is grasped and the biasing member 15 is pulled up. As a result, the biasing member 15 is removed from the mounting cap 16.

[0038] Thus, in the discharger 5 of this embodiment, the push head 14 is attached to the upper end of the stem 12 so as to rotate to one side in the circumferential direction relative to the stem 12, and the stem 12 is connected to the lower end of the cylinder 11 in a state in which upward movement is restricted as to rotate to one side in the circumferential direction relative to the cylinder 11 when it is in the lowered end position. With this configuration, by moving the stem 12 to its lowered end position and rotating the push head 14 to one side in the circumferential direction, the stem 12 can be tightened to the cylinder 11 while the push head 14 can be detached from the stem 12. This prevents the stem 12 from rotating together with the push head 14 during the detachment process. As a result, the detachment process of the push head 14 becomes easier, and the biasing member 15 and other components can be easily separated when disposing of the discharger 5. Furthermore, in this embodiment, when the stem 12 is in the lowered position, the stem 12 can be connected to the lower end inside the cylinder 11. Therefore, even after the push head 14 has been removed from the stem 12, the upward movement of the stem 12 relative to the cylinder 11 can be restricted. As a result, the discharger 5 can be made more compact in the vertical direction after the push head 14 and biasing member 15 have been removed. Consequently, bulkiness during disposal can be suppressed.

[0039] In the discharger 5 of this embodiment, the push head 14 and the stem 12, and the stem 12 and the cylinder 11 are screwed together. With this configuration, the relationship between the push head 14 and the stem 12, and between the stem 12 and the cylinder 11, is a so-called reverse thread relationship. Therefore, the mounting state between the push head 14 and the stem 12 can be stabilized, and the stem 12 can be easily attached to the cylinder 11 when the stem 12 is in the lowered end position.

[0040] (Second Embodiment) In the discharger 5 shown in Figures 6 and 7, a restricting portion 100 is provided between the push head 14 and the cylinder 11. The restricting portion 100 has a cut-out portion 100a, which is a part of the circumferential direction that has been cut off, and is formed in a ring shape coaxial with the central axis O. The restricting portion 100 is detachably attached to the lower end of the covering cylinder 24. The restricting portion 100 surrounds the covering cylinder 24. When the restricting portion 100 is attached to the covering cylinder 24, it faces the lower end edge of the head outer cylinder 53 in the vertical direction. That is, the restricting portion 100 restricts the downward movement of the push head 14 by the lower end edge of the head outer cylinder 53 contacting the restricting portion 100 from above.

[0041] In this embodiment, the regulating portion 100 and the head outer cylinder 53 are set to come into contact with each other when the stem 12 is below the uppermost position and above the lowered end position. Specifically, the regulating portion 100 and the head outer cylinder 53 are set to come into contact with each other at a position where the lower threaded portion 42a and the cylinder threaded portion 25d do not come into contact, while ensuring sufficient stroke of the piston 13 to adequately deliver the liquid contents of the cylinder cylinder portion 25 to the push head 14.

[0042] A thin-walled portion 100b is formed in a part of the circumferential direction of the restricting portion 100. The thin-walled portion 100b is a part of the restricting portion 100 that is formed to be thinner than the rest of the restricting portion 100. In other words, the restricting portion 100 is configured such that the ends of a pair of restricting pieces 100c extending in the circumferential direction are connected via the thin-walled portion 100b. The restricting portion 100 is deformable starting from the thin-walled portion 100b in a direction that causes the restricting pieces 100c to move apart from each other.

[0043] In the discharge container 1 of this embodiment, as shown in Figure 8, the liquid is discharged with the regulating part 100 attached to the mounting cap 16 (covering cylinder 24). This prevents the lower threaded part 42a and the cylinder threaded part 25d from coming into contact when the push head 14 is pressed down. Therefore, it prevents the push head 14 from being prevented from returning upward due to the lower threaded part 42a and the cylinder threaded part 25d unexpectedly engaging.

[0044] On the other hand, in the discharge container 1 of this embodiment, when separating the biasing member 15 from the other members, the restricting portion 100 is removed from the mounting cap 16. Specifically, the pair of restricting pieces 100c are pulled in a direction that separates them radially. As a result, the thin-walled portion 100b deforms, causing the restricting pieces 100c to separate from each other. This increases the circumferential spacing in the cut portion 100a, allowing the restricting portion 100 to be removed from the covering cylinder 24 through the cut portion 100a. By removing the restricting portion 100 from the covering cylinder 24, the restriction of the pressing head 14 by the restricting portion 100 is released. With the restriction of the pressing head 14 released, the stem 12 can be brought to the lowered end position. Thereafter, as in the first embodiment, the pressing head 14 can be rotated to one side in the circumferential direction, thereby screwing the lower threaded portion 42a and the cylinder threaded portion 25d together.

[0045] In the discharger 5 of this embodiment, the push head 14 is configured to restrict downward movement relative to the cylinder 11 by contacting the restricting part 100 from above when the restricting part 100 is attached to the mounting cap 16. With this configuration, when the liquid contents are dispensed, contact between the lower threaded portion 42a and the cylinder threaded portion 25d can be suppressed when the push head 14 is pushed down. Therefore, unexpected engagement between the lower threaded portion 42a and the cylinder threaded portion 25d can be suppressed, and the upward return of the push head 14 can be prevented by the engagement between the lower threaded portion 42a and the cylinder threaded portion 25d.

[0046] Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other modifications are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but only by the appended claims. In the embodiments described above, a configuration was described in which the push head 14 and the stem 12, and the stem 12 and the cylinder 11 are connected by screw fastening, but the configuration is not limited to this. The push head 14 and the stem 12 may be configured to be detachable by relative rotation around the central axis O. Also, the stem 12 and the cylinder 11 may be configured to be attached by relative rotation around the central axis O. The pressing head 14 and the mounting cap 16 may be made of a transparent or translucent material so that the biasing member 15 can be seen from the outside. In the embodiment described above, the biasing member 15 is interposed between the pressing head 14 and the mounting cap 16, but the configuration is not limited to this. The biasing member 15 may be interposed, for example, between the pressing head 14 and the cylinder 11, or between the stem 12 and the mounting cap 16, as long as it supports the stem 12 and the pressing head 14 in an upward biased state.

[0047] In the second embodiment, a configuration was described in which a part of the restricting portion 100 is separated by the cutting portion 100a, but the configuration is not limited to this. The restricting portion 100 may be formed in a ring shape via a breakable weakening portion. Alternatively, the restricting portion 100 may be configured to be displaced or deformed to a position that allows downward movement of the pressing head 14 when separating the biasing member 15 from other members. In the second embodiment, a configuration was described in which the restricting portion 100 is formed separately from the pressing head 14 and the mounting cap 16, but the configuration is not limited to this. The restricting portion 100 may be formed integrally with either the pressing head 14 or the mounting cap 16 in a breakable manner. [Explanation of Symbols]

[0048] 2: Container body 5:Dispenser 11: Cylinder 12: Stem 13: Piston 14: Press head 14a: Discharge hole 15: Biasing member 25d: Cylinder threaded section 41b: Upper threaded portion (first stem threaded portion) 42a: Lower threaded section (second stem threaded section) 51a: Head thread section 100: Regulatory Department O: Central axis

Claims

1. A cylinder that extends vertically and whose inner surface communicates with the container body, A stem extending in the vertical direction, with its inner side communicating with the cylinder, and mounted to be movable in the vertical direction relative to the cylinder, A piston that can slide up and down within the cylinder in conjunction with the up and down movement of the stem, The container body has a discharge hole for discharging the liquid contents, and a push head is attached to the upper end of the stem, The pressing head is supported by a biasing member that allows it to move downward while biased upward, The pressing head is connected to the upper end of the stem such that it detaches as the stem rotates to one side around a central axis along the vertical direction of the stem. The stem is a discharger connected to the cylinder in a state where, at its lowered end position, upward movement is restricted as it rotates to one side about the central axis relative to the cylinder.

2. The pressing head is configured to be detachable from the stem by releasing the screw threads between the head screw portion on the pressing head and the first stem screw portion on the stem as the pressing head rotates to one side about the central axis relative to the stem. The discharger according to claim 1, wherein the stem is configured to be attachable to the cylinder by screwing a second stem threaded portion provided on the stem and a cylinder threaded portion provided on the cylinder into the stem as the stem rotates to one side about the central axis relative to the cylinder.

3. The discharger according to claim 1 or 2, wherein a restricting portion for restricting the downward movement of the pressing head relative to the cylinder when the stem is below the uppermost position and above the lowered end position is detachably provided between the pressing head and the cylinder.

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