JP2018140803A - Liquid discharge container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid discharge container which secures sealability between an outer surface of a discharge valve and an inner surface of a discharge pipe while reducing a load exerted on the discharge pipe.SOLUTION: An elastic seal member 58 which continuously extends over an entire periphery is disposed between an outer surface of a discharge valve 51 and an inner surface of a discharge pipe 50 while tightly sealing a gap between the outer surface of the discharge valve 51 and the inner surface of the discharge pipe 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a liquid discharge container.

  As a liquid discharge container, for example, as shown in Patent Document 1 below, a container main body in which the content liquid is stored, a lower end suction port is disposed in the container main body, a cylinder fixed to the container main body, and a cylinder A rotary ring that is pivotally attached to the cylinder, a discharge valve at the top and a discharge pipe in which the lower opening is located in the cylinder, and is arranged in the cylinder and slides up and down in a liquid-tight manner on the discharge pipe. A cylindrical plunger that is externally movably fitted and urged downward by an urging mechanism and a rotating ring and the plunger are provided. A conversion mechanism for converting into a discharge valve, a discharge head mounted on a discharge valve and formed with a discharge port for the content liquid, and disposed at the suction port, allowing the flow of the content liquid in the container body into the cylinder, and In cylinder A suction valve that prevents the liquid from flowing into the container body, and a pressurization chamber that is surrounded by the cylinder, suction valve, discharge pipe, and plunger, and that stores the liquid that flows into the cylinder from the container body through the suction valve A configuration including the above is known.

JP2015-227196A

  However, in the conventional liquid discharge container, since the lower end portion of the discharge valve is press-fitted into the discharge pipe, the sealing performance between the outer surface of the discharge valve and the inner surface of the discharge pipe is ensured. A pressing force is always applied outward in the radial direction, and there is a possibility that problems such as liquid leakage due to damage occur in the discharge pipe as time passes.

  In view of the above, an object of the present invention is to provide a liquid discharge container capable of ensuring a sealing property between the outer surface of the discharge valve and the inner surface of the discharge pipe while suppressing a load applied to the discharge pipe.

  The present invention employs the following means in order to solve the above problems. That is, the liquid discharge container of the present invention includes a container main body in which the content liquid is stored, a lower end suction port disposed in the container main body, a cylinder fixed to the container main body, and a rotation to the cylinder. A pivot ring that is attached, a discharge valve in the upper part and a lower opening in the cylinder, a discharge pipe disposed in the cylinder, and vertically sliding in a liquid-tight manner on the discharge pipe A cylindrical plunger that is externally fitted and urged downward by an urging mechanism, and is provided between the rotating ring and the plunger, and the plunger is configured to rotate the cylinder with respect to the cylinder. A conversion mechanism for converting the cylinder to the ascending operation, a discharge head attached to the discharge valve and having a discharge port for content liquid formed therein, and disposed in the suction port, and the content liquid in the container body Siri A suction valve that allows inflow into the cylinder and prevents outflow of the content liquid in the cylinder into the container body, and is surrounded by the cylinder, the suction valve, the discharge pipe, and the plunger, A pressurizing chamber in which the content liquid in the container body that has flowed into the cylinder through the suction valve is stored, and continuously extends over the entire circumference between the outer surface of the discharge valve and the inner surface of the discharge pipe. The elastic seal member is disposed in a state in which the space between the outer surface of the discharge valve and the inner surface of the discharge pipe is tightly sealed.

In the present invention, an elastic seal member continuously extending over the entire circumference is disposed between the outer surface of the discharge valve and the inner surface of the discharge pipe in a state in which the space between the outer surface of the discharge valve and the inner surface of the discharge pipe is tightly sealed. Therefore, the elastic seal member can function not only as a seal material but also as a buffer material, and while suppressing the load applied to the discharge pipe, the elastic seal member is provided between the outer surface of the discharge valve and the inner surface of the discharge pipe. Sealability can be secured.
Further, since the elastic seal member is a separate member from the discharge valve and the discharge pipe, for example, the load applied to the connection portion between the discharge valve and the discharge pipe and the elastic seal member can be suppressed, and the contents can be reduced. The specification of the elastic seal member can be selected according to the properties.

  Here, the elastic seal member may be sandwiched vertically between the outer surface of the discharge valve and the inner surface of the discharge pipe.

  In this case, since the elastic seal member is sandwiched between the outer surface of the discharge valve and the inner surface of the discharge pipe in the vertical direction instead of the radial direction, it is possible to prevent the pressure applied to the discharge pipe from being directed radially outward Therefore, it is possible to reliably prevent the discharge pipe from being damaged over time.

  The lower end of the discharge valve may be inserted into the discharge pipe, and a radial gap may be provided between the outer surface of the lower end of the discharge valve and the inner surface of the discharge pipe.

  In this case, since a radial gap is provided between the outer surface of the lower end portion of the discharge valve and the inner surface of the discharge pipe, it is ensured that a pressing force directed radially outward is applied to the discharge pipe. Can be prevented.

  In addition, at least one of the outer surface of the discharge valve and the inner surface of the discharge pipe is formed with an engaging portion that engages with the other at a portion positioned above the position where the elastic seal member is disposed. May be.

In this case, since at least one of the outer surface of the discharge valve and the inner surface of the discharge pipe is formed with an engaging portion that engages with the other, it is possible to keep only the discharge valve and the discharge pipe combined. For example, in the process of assembling the liquid discharge container, after the discharge valve and the discharge pipe are combined with each other, it is possible to assemble another member to the assembly, and the liquid discharge container can be easily assembled. .
In addition, since the engaging portion is formed in a portion located above the position where the elastic seal member is disposed on at least one of the outer surface of the discharge valve and the inner surface of the discharge pipe, Even if the portion where the engaging portion is located in the discharge pipe is damaged with the passage of time, for example, due to the pressing force directed to the radially outer side being applied to the discharge pipe, The liquid in the pressurizing chamber is blocked by the elastic seal member, and can be prevented from leaking outside the discharge pipe.

  According to this invention, the sealing performance between the outer surface of the discharge valve and the inner surface of the discharge pipe can be secured while suppressing the load applied to the discharge pipe.

1 is a half vertical cross-sectional view showing a first embodiment of a liquid discharge container according to the present invention. FIG. 2 is a partially enlarged view of the liquid discharge container of FIG. 1. It is a figure which shows the state which started rotating the rotation ring from the state shown in FIG. It is a figure which shows the state which rotation of the rotation ring was complete | finished from the state shown in FIG. FIG. 5 is a diagram illustrating a state in which the ejection head is pushed down from the state illustrated in FIG. 4. It is a semi-longitudinal sectional view showing an important part of a liquid discharge container according to a second embodiment of the present invention.

Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings. In each drawing used in the following description, the scale is appropriately changed to make each member a recognizable size.
As shown in FIG. 1, the liquid discharge container 1 is formed in a bottomed cylindrical shape and includes a container body 10 in which the content liquid is accommodated. The container body 10 is formed in a bottomed cylindrical shape including a mouth portion 12 having a male screw on the outer peripheral surface, a body portion 11, and a bottom portion.
Hereinafter, the central axis passing through the center of the cross section of the container body 10 is referred to as a container axis O, the mouth 12 side is referred to as the upper side, and the bottom side is referred to as the lower side along the container axis O direction. This direction is called the up-down direction. Further, in a plan view viewed from the container axis O direction, a direction orthogonal to the container axis O is referred to as a radial direction, and a direction around the container axis O is referred to as a circumferential direction.

  A cylinder 20 is fixed to the mouth portion 12 of the container body 10. A suction port 21 a formed at the lower end of the cylinder 20 is disposed in the container body 10. In the illustrated example, the cylinder 20 is formed in a multistage cylindrical shape arranged coaxially with the container axis O, and the first cylindrical portion 21, the second cylindrical portion 22, the third cylindrical portion 23, And the 4th cylinder part 24 is continuously arranged in this order, and these cylinder parts 21-24 have the larger internal diameter and the outer diameter, so that it is located in the upper side.

  The screw cylinder part 25 protrudes toward the outer side in the radial direction from the approximate center in the vertical direction of the fourth cylinder part 24 and extends downward. An internal thread is provided on the inner peripheral surface of the screw cylinder portion 25, and the cylinder 20 is fixed to the container body 10 by screwing the screw cylinder portion 25 into the mouth portion 12 of the container body 10. A packing 13 is disposed between the upper end opening edge of the mouth portion 12 and the screw cylinder portion 25.

The upper end portion of the first tube portion 21 and the lower end portion of the second tube portion 22 are connected via an annular valve seat portion 26. The valve seat portion 26 is disposed coaxially with the container axis O.
The inside of the first cylinder part 21 is the suction port 21 a, and the upper end part of the suction pipe 28 is fitted inside the first cylinder part 21. The lower end opening of the suction pipe 28 is located at the bottom in the container body 10. A suction valve 29 that allows the content liquid in the container body 10 to flow into the cylinder 20 and prevents the content liquid in the cylinder 20 from flowing into the container body 10 is disposed at the suction port 21a. . The suction valve 29 has a valve body 29a that abuts on the upper surface of the valve seat portion 26 so as to be separated upward.
A plurality of isobaric holes 27 penetrating in the radial direction are formed in the lower end portion of the third cylindrical portion 23 at intervals in the circumferential direction.

  The cylinder 20 includes a cylindrical sleeve 30 fitted in the second cylindrical portion 22. The sleeve 30 includes a large-diameter cylindrical portion 30a positioned at a lower portion, a small-diameter cylindrical portion 30b that extends upward from the upper end of the large-diameter cylindrical portion 30a, and has an inner diameter smaller than that of the large-diameter cylindrical portion 30a, and a small-diameter cylindrical portion 30b. A seal cylinder portion 30c extending upward from the upper end and having an inner diameter larger than that of the small diameter cylinder portion 30b. The upper end portion of the small diameter cylindrical portion 30b is bent outward in the radial direction and is locked on the upper end opening edge of the second cylindrical portion 22. The seal cylinder part 30 c is spaced radially inward from the inner peripheral surface of the third cylinder part 23.

  In the illustrated example, the vertical positions of the upper end opening edge of the seal cylinder portion 30c and the upper end opening edge of the third cylinder portion 23 coincide with each other. A plurality of groove portions 30d are formed at intervals in the circumferential direction at the upper end portion of the seal cylinder portion 30c. The groove part 30d penetrates the seal cylinder part 30c in the radial direction and opens upward.

  A plurality of longitudinal grooves 31 having a semicircular cross section are provided at equal intervals in the circumferential direction on the inner peripheral surface of the substantially upper half of the fourth cylindrical portion 24. A protrusion 24a is provided. A rotating ring 40 disposed coaxially with the container axis O is externally mounted on the fourth cylindrical portion 24 so as to be rotatable in the circumferential direction and immovable in the vertical direction. That is, the rotation ring 40 is disposed so as to be rotatable around the container axis O with respect to the cylinder 20.

  The upper end portion of the rotating ring 40 is provided with a neck tube portion 41a located at the upper end, and a mounting tube portion 41b formed with a larger diameter than the neck tube portion 41a and continuing to the lower end of the neck tube portion 41a. ing. An upper end portion of the discharge pipe 50 whose lower opening is located in the cylinder 20 is disposed inside the mounting cylinder portion 41b.

The discharge pipe 50 is made of, for example, a resin material such as polypropylene or polyethylene, and is disposed coaxially with the container axis O, and is integrally inserted into the inner side of the top plate portion 46 of the relay member 42 described later and the inner side of the cylinder 20. ing. Of the discharge pipe 50, the upper end portion protrudes upward from the top plate portion 46, the lower portion is inserted inside the cylinder 20, and the lower end edge where the lower opening is located is located inside the third cylinder portion 23 of the cylinder 20. ing.
As shown in FIG. 2, the discharge pipe 50 includes a main body portion 50a extending downward from the top plate portion 46, a flange portion 50b extending radially outward from an upper end portion of the main body portion 50a, and a flange portion 50b. And a connecting pipe 50c extending upward from the outer peripheral edge. The flange portion 50 b is placed on the upper surface of the top plate portion 46, and the flange portion 50 b and the connecting pipe 50 c are the upper end portions of the discharge pipe 50 positioned above the top plate portion 46. The discharge pipe 50 is attached to the rotating ring 40 via the relay member 42 by placing the flange part 50 b on the top surface of the top plate part 46. A discharge valve 51 is provided above the discharge pipe 50.

  The discharge valve 51 closes the upper opening of the discharge pipe 50. The discharge valve 51 is disposed on the discharge pipe 50 so as to be able to move downward in an upward biased state, and is connected to the outlet cylinder 52 having the discharge head 56 mounted on the upper end 52a, and fixed to the discharge pipe 50, and the lower end 53a. Is cut off from communication between the inlet cylinder 53 inserted into the discharge pipe 50, the outlet cylinder 52 and the inlet cylinder 53, and when the outlet cylinder 52 moves downward relative to the inlet cylinder 53, The valve body 54 which makes the inside of 52 communicate, and the spring 55 which urges | biases the exit pipe | tube 52 upward are provided.

The inlet cylinder 53 is formed with a lower end 53a inserted into the upper end of the main body 50a of the discharge pipe 50, a larger diameter than the lower end 53a, an upper part 53b connected to the upper end of the lower end 53a, and an upper 53b. And a flange portion 53c that protrudes radially outward from the upper end portion.
In the lower end portion 53a of the inlet cylinder 53, a tapered portion 53e having a diameter gradually reduced from the upper side to the lower side is formed on the lowermost outer surface continuous to the lower end opening edge. A radial gap is provided between the outer surface of the lower end portion 53 a of the inlet cylinder 53 and the inner surface of the discharge pipe 50. Note that the outer surface of the lower end portion 53a of the inlet tube 53 and the inner surface of the discharge pipe 50 may be brought into contact with each other.
The upper portion 53b protrudes upward from the main body portion 50a of the discharge pipe 50, and the outer surface thereof faces the inner surface of the connecting pipe 50c of the discharge pipe 50 in the radial direction. The connection portion between the lower end portion 53a and the upper portion 53b in the inlet tube 53 is an annular step portion 53d, and the lower surface of the step portion 53d and the upper end opening edge of the main body portion 50a of the discharge pipe 50 face each other in the vertical direction. Yes. In the illustrated example, a gap in the vertical direction is provided between the lower surface of the stepped portion 53d and the upper end opening edge of the main body portion 50a of the discharge pipe 50. The lower surface of the stepped portion 53d and the upper end opening edge of the main body portion 50a of the discharge pipe 50 may be brought into contact with each other.
The packing 101 is disposed between the outer peripheral edge portion of the lower surface of the flange portion 53c of the inlet cylinder 53 and the upper end opening edge of the connecting pipe 50c.

  Here, the discharge pipe 50 is formed with ribs 50d that connect the inner surface of the connecting pipe 50c and the upper surface of the flange portion 50b. The rib 50d is formed in a plate shape with the front and back surfaces facing the circumferential direction. The inner end edge in the radial direction of the rib 50d is located on the outer side in the radial direction from the upper end opening edge of the main body 50a, and is in contact with or close to the outer surface of the upper part 53b of the inlet tube 53. A plurality of ribs 50d are arranged at intervals in the circumferential direction.

  The outlet tube 52 includes an upper end portion 52 a that protrudes upward from the inlet tube 53, and a lower portion 52 b that is disposed inside the upper portion 53 b of the inlet tube 53. Between the outer surface of the lower part 52 b and the inner surface of the upper part 53 b of the inlet cylinder 53, a communication gap 125 is provided which communicates with the inside of the main body part 50 a of the discharge pipe 50 through the inner side of the lower end part 53 a of the inlet cylinder 53. Yes. An upper end portion 52a of the outlet cylinder 52 is formed in a bottomed cylindrical shape. A communication hole 118 is formed in the upper end portion 52a to allow communication between the inside and the communication gap 125.

The valve body 54 is formed in an annular shape, and the outlet cylinder 52 is closely fitted inside the valve body 54, and the inner peripheral surface of the valve body 54 closes the communication hole 118 of the outlet cylinder 52. The outer peripheral portion of the lower surface of the valve body 54 is placed on the upper surface of the flange portion 53 c of the inlet tube 53.
Here, in the lower part 52 b of the outlet tube 52, an annular groove that opens downward and is arranged coaxially with the container axis O is formed. The upper portion of the spring 55 is inserted and supported in the annular groove, and the lower end of the spring 55 is supported on the upper surface of the step portion 53 d of the inlet tube 53.

  In the above configuration, when the outlet cylinder 52 is moved downward against the inlet cylinder 53 against the upward biasing force of the spring 55, the outlet cylinder 52 is elastically deformed with the inner peripheral edge of the valve body 54 facing downward. By doing so, the communication hole 118 of the outlet tube 52 is opened. Thereby, the inside of the main body portion 50 a of the discharge pipe 50 and the inside of the upper end portion 52 a of the outlet tube 52 communicate with each other through the inside of the lower end portion 53 a of the inlet tube 53, the communication gap 125, and the communication hole 118. Note that the discharge valve 51 may be appropriately changed as long as it has such a function.

  Here, the discharge pipe 50 and the discharge valve 51 are integrally fixed by a capped tubular fitting 102 having a top. The top wall of the crimping fitting 102 is formed in an annular shape and is arranged coaxially with the container axis O. Inside the top wall, an upper end portion 52a of the outlet tube 52 is slidably fitted downward. In the caulking fitting 102, the connecting pipe 50c of the discharge pipe 50 is fitted in the peripheral wall, and the upper surface of the valve body 54 is in pressure contact with the lower surface of the top wall. The peripheral wall of the caulking metal fitting 102 is disposed inside the mounting tube portion 41 b of the rotating ring 40. The lower end of the peripheral wall of the caulking metal fitting 102 is positioned below the upper end of the rib 50d of the discharge pipe 50.

In the present embodiment, the elastic seal member 58 continuously extending over the entire circumference between the outer surface of the discharge valve 51 and the inner surface of the discharge pipe 50 is provided between the outer surface of the discharge valve 51 and the inner surface of the discharge pipe 50. It is arranged in a tightly sealed state. The elastic seal member 58 is a separate member from the discharge valve 51 and the discharge pipe 50. Examples of the elastic seal member 58 include an O-ring. In the illustrated example, the elastic seal member 58 is disposed between the outer surface of the discharge valve 51 and the inner surface of the discharge pipe 50 in a state of being compressed and deformed. The elastic seal member 58 is sandwiched between the lower surface of the step portion 53 d of the inlet tube 53 and the upper end opening edge of the main body portion 50 a of the discharge pipe 50 in the vertical direction. The elastic seal member 58 is not in contact with the radially inner end edge of the rib 50 d and the outer peripheral surface of the lower end portion 53 a of the inlet tube 53. The elastic seal member 58 is made of an elastic material such as soft resin or rubber.
On at least one of the outer surface of the inlet cylinder 53 and the inner surface of the discharge pipe 50, an engaging portion 59 that engages with the other is formed in a portion located above the position where the elastic seal member 58 is disposed. Yes. The engaging portion 59 is in pressure contact with the other in the radial direction. The engaging portion 59 is formed at an intermediate portion in the vertical direction of the radially inner end edge of the rib 50 d of the discharge pipe 50. The engaging portion 59 is formed on all of the plurality of ribs 50d. The engaging portion 59 is in pressure contact with the outer surface of the upper portion 53 b of the inlet tube 53 in the radial direction. The engaging portion 59 may not be in pressure contact with the discharge valve 51. The engaging portion 59 is formed in a protruding curved shape that protrudes radially inward from the radially inner end edge of the rib 50d. The engaging portion 59 is located below the peripheral wall of the crimping fitting 102. Note that the engaging portion 59 may not be formed on the outer surface of the inlet tube 53 or the inner surface of the discharge pipe 50.

  The discharge head 56 is formed with a discharge port 56a for the content liquid and is provided with a mounting cylinder part 56b inserted into the neck cylinder part 41a of the rotating ring 40. An upper end portion 52a of the outlet tube 52 is fitted in the mounting tube portion 56b. The discharge port 56 a communicates with the upper end portion 52 a of the outlet cylinder 52 through a flow path provided in the discharge head 56.

As shown in FIG. 1, a cylindrical plunger 60 arranged coaxially with the container axis O is disposed in the cylinder 20. The plunger 60 is externally fitted to the discharge pipe 50 so as to be vertically slidable. The plunger 60 includes a drive cylinder portion 61 and a skirt portion 62.
The drive cylinder portion 61 includes a lower cylinder portion 63, an upper cylinder portion 64 positioned radially outward from the lower cylinder portion 63, and an annular plate portion 65 that connects these. An inner peripheral edge portion of the ring plate portion 65 protrudes radially inward from the lower cylinder portion 63, and an inner edge thereof extends in both the upper and lower directions.

The outer diameter of the lower cylinder part 63 is smaller than the inner diameter of the small diameter cylinder part 30 b of the sleeve 30. A communication groove 63 a that opens downward and extends in the vertical direction is formed on the outer peripheral surface of the lower cylindrical portion 63.
Note that only one communication groove 63a may be formed on the outer peripheral surface of the lower cylinder portion 63, or a plurality of communication grooves 63a may be formed at intervals in the circumferential direction. Below, the part in which the communication groove 63a is formed in the lower cylinder part 63 is referred to as the lower part of the lower cylinder part 63, and the part above the lower part in the lower cylinder part 63 is referred to as the upper part.

  A skirt portion 62 is fitted in the lower cylinder portion 63. The skirt portion 62 includes a support tube portion 66 fitted in the lower tube portion 63, a seal leg tube portion 67 that protrudes radially outward from the lower end portion of the support tube portion 66, and extends downward. And a presser leg portion 68 extending downward from the lower end portion of the support tube portion 66.

  The inner diameter of the support cylinder portion 66 is equal to the inner diameter of the ring plate portion 65 and is slightly larger than the outer diameter of the discharge pipe 50. A rubber seal ring 69 is disposed between the inner peripheral edge portion of the upper end opening edge of the support cylinder portion 66 and the lower end of the inner end edge of the ring plate portion 65. The seal ring 69 slides liquid-tightly on the outer peripheral surface of the discharge pipe 50 while liquid-tightly sealing the drive cylinder portion 61, the skirt portion 62, and the discharge pipe 50.

  The seal leg tube portion 67 protrudes downward from the lower tube portion 63 of the drive tube portion 61. The outer diameter of the seal leg cylinder portion 67 is equal to the outer diameter of the lower cylinder portion 63. The lower end portion of the seal leg tube portion 67 is a tapered tube portion 67a that gradually increases in diameter as it goes downward. The outer diameter of the lower end edge of the tapered cylindrical portion 67a is smaller than the inner diameter of the large diameter cylindrical portion 30a of the sleeve 30, and a radial gap is provided between the tapered cylindrical portion 67a and the large diameter cylindrical portion 30a. . The outer diameter of the lower end edge of the tapered cylindrical portion 67a is equal to or slightly larger than the inner diameter of the small diameter cylindrical portion 30b of the sleeve 30. The tapered cylinder part 67a slides on the inner peripheral surface of the small diameter cylinder part 30b.

A plurality of holding leg portions 68 are arranged at intervals in the circumferential direction. Each presser leg 68 presses the upper surface of the valve body 29a of the suction valve 29 when the plunger 60 is positioned at the lowest limit position. As a result, the valve body 29a is sandwiched between the pressing leg portion 68 and the valve seat portion 26 in the vertical direction, and movement of the valve body 29a is restricted.
The space surrounded by the cylinder 20, the suction valve 29, the discharge pipe 50, and the plunger 60 becomes a pressurizing chamber 93 in which the content liquid flowing into the cylinder 20 from the container body 10 through the suction valve 29 is stored. Yes.

  Between the rotating ring 40 and the plunger 60, a conversion mechanism 75 is provided that converts the rotating operation of the rotating ring 40 with respect to the cylinder 20 into the ascending operation of the plunger 60 with respect to the cylinder 20. Hereinafter, the conversion mechanism 75 will be described.

Among the plungers 60, a plurality of vertical grooves 70 b that are arranged at intervals in the circumferential direction and extend in the vertical direction on the outer circumferential surface of the upper cylinder portion 64 located in the fourth cylinder portion 24 of the cylinder 20, and the circumferential direction A cam groove 70 having a semicircular cross section including an inclined groove 70a connecting the upper end and the lower end of the vertical grooves 70b adjacent to each other is formed over the entire circumference in the circumferential direction.
A ball 71 is engaged with the cam groove 70 and the vertical groove 31 of the cylinder 20 so as to be integrally rotatable. That is, half of the ball 71 is inserted into the cam groove 70 and the remaining half is inserted into the vertical groove 31.

The plunger 60 is connected to the rotating ring 40 via the relay member 42 so as not to be relatively rotatable and relatively movable in the vertical direction.
The relay member 42 includes an outer cylindrical portion 43 that surrounds the fourth cylindrical portion 24 of the cylinder 20 from the radially outer side, an inner cylindrical portion 44 that is disposed on the radially inner side of the outer cylindrical portion 43, and the outer cylindrical portion 43 and the inner cylindrical portion. An annular top plate portion 46 that connects the respective upper ends of the portion 44 and an upper tube portion 45 that protrudes upward from the top plate portion 46 are provided.

The inner peripheral edge portion of the top plate portion 46 protrudes radially inward from the inner cylindrical portion 44. As shown in FIG. 2, the flange portion 50 b of the discharge pipe 50 is placed on the inner peripheral edge portion on the upper surface of the top plate portion 46.
As shown in FIG. 1, on the inner peripheral surface of the outer cylindrical portion 43, a first protrusion 24 a formed on the outer peripheral surface of the fourth cylindrical portion 24 is engaged from below the first protruding portion 24 a. Two protrusions 43a are formed.
The upper cylinder part 45 has a smaller diameter than the outer cylinder part 43 and a larger diameter than the inner cylinder part 44. A third protrusion 45 a that engages with a first groove 40 a formed on the inner surface of the rotating ring 40 is formed on the outer peripheral surface of the upper cylinder portion 45. When the third protrusion 45a of the relay member 42 is engaged with the first groove portion 40a of the rotating ring 40, the relative rotational movement of the rotating ring 40 and the relay member 42 is restricted.
On the outer peripheral surface of the inner cylinder portion 44, a fourth protrusion 44a that engages with the second groove portion 64a formed on the inner peripheral surface of the upper cylinder portion 64 of the drive cylinder portion 61 is formed. The fourth protrusion 44a is engaged with the second groove 64a so as to be relatively movable downward. When the fourth protrusion 44a of the relay member 42 is engaged with the second groove portion 64a of the plunger 60, the relative rotational movement of the plunger 60 and the relay member 42 is restricted. The upward movement with respect to the relay member 42 is allowed.

  The plunger 60 is biased downward by a spring (biasing mechanism) 47 interposed between the relay member 42 and the plunger 60. Therefore, the ball 71 is always sandwiched between the lower end of the vertical groove 31 of the cylinder 20 and the upper wall surface of the cam groove 70 while the rotary ring 40 is rotated.

In the above configuration, when the rotating ring 40 is rotated with respect to the container body 10 in a state where the ball 71 is engaged with the upper end of the inclined groove 70a, as shown in FIG. At this position, the plunger 60 moves upward along the inclined groove 70a relatively down the inclined groove 70a. At this time, the plunger 60 compresses the spring 47.
As shown in FIG. 4, when the ball 71 moves from the lower end of the inclined groove 70 a of the cam groove 70 to the lower end of the vertical groove 70 b at the same height position as the rotating ring 40 further rotates, the spring 47. The plunger 60 can be lowered by the elastic restoring force. When the plunger 60 is lowered, the ball 71 relatively moves up the vertical groove 70b, and finally reaches the upper end of the adjacent inclined groove 70a.

In this way, the plunger 60 is disposed so as not to rotate relative to the rotating ring 40 and to be relatively movable in the vertical direction, and the cylinder 20 and the plunger 60 are constituted by the vertical groove 31, the cam groove 70, and the ball 71. The plunger 60 can be lifted against the downward urging force of the spring 47 by rotating the rotating ring 40 with respect to the container main body 10, and thereafter The plunger 60 can be lowered by the elastic restoring force of the spring 47.
As described above, the ball 71 moves relative to the cam groove 70 including the inclined groove 70a and the vertical groove 70b as the rotating ring 40 rotates while maintaining the same height position. The plunger 60 moves up and down with respect to the cylinder 20.

  In the top plate portion 46 of the relay member 42, a plurality of air holes 46 a penetrating in the vertical direction are formed at intervals in the circumferential direction in a portion located between the outer cylinder portion 43 and the upper cylinder portion 45. The upper end portion of the spring 47 is supported by the inner peripheral edge portion of the lower surface of the top plate portion 46, and the lower end portion of the spring 47 is supported by the upper surface of the annular plate portion 65 of the plunger 60. A portion of the inner edge of the ring plate 65 that protrudes upward is inserted inside the lower end of the spring 47.

As shown in FIG. 1, an equal pressure valve 80 is disposed at the upper end portion of the third cylinder portion 23 of the cylinder 20.
The equal pressure valve 80 is formed in an annular shape and is arranged coaxially with the container axis O. The equal pressure valve 80 includes a valve main body 84 whose lower surface is supported by the upper end opening edges of the third cylinder portion 23 and the seal cylinder portion 30c, and a first valve portion 81 that is in contact with the seal cylinder portion 30c so as to be separated from each other. The second valve portion 82 that slides on the outer peripheral surface of the lower cylinder portion 63 and the third valve portion 83 that is in contact with the plunger 60 so as to be separated from each other are provided. The isobaric valve 80 is formed of an elastic material such as soft resin or rubber.

  Between the cylinder 20 and the plunger 60, a hydraulic pressure relief passage 91 is formed on the lower side with an isobaric valve 80 interposed therebetween, and an air inflow passage 92 is formed on the upper side.

  The hydraulic pressure release passage 91 communicates with the pressurizing chamber 93 when the tapered cylindrical portion 67a of the plunger 60 is opposed to the large diameter cylindrical portion 30a of the sleeve 30 in the radial direction, and as shown in FIGS. When the tapered cylinder portion 67a is in pressure contact with the small diameter cylinder portion 30b, the communication with the pressurizing chamber 93 is blocked. That is, the hydraulic pressure relief passage 91 is provided between the inner peripheral surface of the cylinder 20 and the outer peripheral surface of the plunger 60, and communicates with the pressurizing chamber 93 when the plunger 60 is positioned at the lowest limit position. When located above the lower limit position, communication with the pressurizing chamber 93 is blocked. The hydraulic pressure relief passage 91 can communicate with the inside of the container main body 10 through the isobaric hole 27 formed in the third cylindrical portion 23.

  As shown in FIG. 1, the air inflow passage 92 is provided between the inner peripheral surface of the cylinder 20 and the outer peripheral surface of the plunger 60, and is between the drive cylinder portion 61 of the plunger 60 and the fourth cylinder portion 24 of the cylinder 20. The outside air can be introduced to the outside through the gap, the cam groove 70, the vertical groove 31 of the cylinder 20, the air hole 46a of the relay member 42, and the like.

The first valve portion 81 has a cylindrical shape that extends downward from the valve body 84 and is disposed coaxially with the container axis O. The lower end portion of the first valve portion 81 is in contact with the outer peripheral surface of the seal cylinder portion 30c of the sleeve 30 so as to be able to separate, and closes the isobaric hole 27 so as to be openable. The isobaric hole 27 connects the inside of the container body 10 and the hydraulic pressure relief passage 91 when the lower end portion of the first valve portion 81 is separated from the outer peripheral surface of the seal cylinder portion 30c.
In the illustrated example, the lower end portion of the first valve portion 81 is in contact with a portion located below the groove portion 30d on the outer peripheral surface of the seal tube portion 30c. The first valve portion 81 operates according to the difference between the pressure in the hydraulic pressure relief passage 91 and the pressure in the container main body 10 to prevent the flow from the container main body 10 to the hydraulic pressure relief passage 91, and the hydraulic pressure relief passage 91 It functions as a check valve that allows only the flow from 91 into the container body 10.

  The second valve portion 82 is formed on the inner peripheral surface of the valve main body 84, protrudes radially inward, and is an annular protrusion that continuously extends over the entire circumference. For example, two second valve portions 82 may be formed at an interval in the vertical direction. The second valve part 82 is fitted on the upper part of the lower cylinder part 63 of the drive cylinder part 61 so as to be slidable in a liquid-tight manner. When the second valve portion 82 slides on the lower portion of the lower cylinder portion 63, there are a portion positioned above and a portion positioned below the second valve portion 82 on the outer peripheral side of the lower tube portion 63. The communication is made through the communication groove 63a. That is, the second valve part 82 is in a closed state when sliding on the upper part of the lower cylinder part 63, and is opened when sliding on the lower part of the lower cylinder part 63.

  The third valve portion 83 extends downward from a portion of the valve main body 84 that is located radially inward of the first valve portion 81. The third valve portion 83 is formed in a cylindrical shape arranged coaxially with the container axis O. The lower end portion of the third valve portion 83 is fitted on the upper portion of the lower cylinder portion 63 of the drive cylinder portion 61 and the seal leg cylinder portion 67 of the skirt portion 62 so as to be slidable in a liquid-tight manner. When the lower end portion of the third valve portion 83 slides on the lower portion of the lower cylinder portion 63, the lower end portion is positioned on the outer peripheral side of the lower cylinder portion 63 and below the portion positioned above the third valve portion 83. The portion communicates with the communication groove 63a. That is, the third valve portion 83 is in a closed state when sliding on the upper portion of the lower tube portion 63 and the seal leg tube portion 67, and is opened when sliding on the lower portion of the lower tube portion 63. It becomes a state.

The third valve portion 83 opens and closes due to the difference between the pressure in the hydraulic pressure relief passage 91 and the pressure in the air inflow passage 92 when the second valve portion 82 is in the open state. It functions as a check valve that blocks the flow from the pressure relief passage 91 to the air inflow passage 92 and allows only the flow from the air inflow passage 92 to the hydraulic pressure relief passage 91.
Thus, the equal pressure valve 80 is provided between the hydraulic pressure relief passage 91 and the air inflow passage 92, opens and closes the equal pressure hole 27, and slides up and down on the outer peripheral surface of the plunger 60, thereby releasing the hydraulic pressure. The communication between the passage 91 and the air inflow passage 92 and the blocking thereof are switched.
Further, in the present embodiment, a fixture 86 is provided that sandwiches the equal pressure valve 80 with the cylinder 20 in the vertical direction and fixes the equal pressure valve 80 to the cylinder 20. In the illustrated example, the fixture 86 is formed in an annular shape arranged coaxially with the container axis O, and sandwiches the isobaric valve 80 with the inner surface of the cylinder 20 in the vertical direction.

(Operation of liquid discharge container)
Next, the operation of the liquid discharge container 1 configured as described above will be described.
<Non-pressurized state>
As shown in FIG. 1, in the non-pressurized state, which is a non-use state of the liquid discharge container 1, the suction valve 29 and the discharge valve 51 are closed, and the plunger 60 is positioned at the lowest limit position. In addition, the presser leg 68 presses the upper surface of the valve element 29 a of the suction valve 29. Further, the hydraulic pressure relief passage 91 communicates with the pressurizing chamber 93.

The first valve portion 81 of the equal pressure valve 80 is in pressure contact with the seal tube portion 30 c of the sleeve 30 in the cylinder 20 to block communication between the hydraulic pressure relief passage 91 and the inside of the container body 10. Both the second valve portion 82 and the third valve portion 83 are in pressure contact with the upper portion of the lower cylinder portion 63 of the plunger 60 to block communication between the hydraulic pressure relief passage 91 and the air inflow passage 92.
The discharge valve 51 is maintained in a closed state unless the discharge head 56 is pushed down.

<Pump-up operation-first half>
When the rotating ring 40 is rotated in the circumferential direction with respect to the container body 10 from the non-pressurized state, the plunger 60 rises while compressing the spring 47. Then, as the plunger 60 moves up, the holding leg 68 is separated upward from the valve body 29a of the suction valve 29, and the valve body 29a can be opened.
Here, the movement range of the plunger 60 from the lowest limit position to immediately before the tapered cylindrical portion 67a of the plunger 60 is pressed against the small diameter cylindrical portion 30b of the sleeve 30 is hereinafter referred to as a lower movement range. In this lower movement region, both the second valve portion 82 and the third valve portion 83 of the isobaric valve 80 are in pressure contact with the upper portion of the lower cylinder portion 63 of the plunger 60, and the hydraulic pressure relief passage 91 and the air inflow passage are provided. Continue to block communication with 92.

As shown in FIG. 3, when the plunger 60 exceeds the lower movement range and the tapered cylindrical portion 67 a of the plunger 60 is in pressure contact with the small-diameter cylindrical portion 30 b of the sleeve 30, the pressurizing chamber is raised with the subsequent rise of the plunger 60. 93 becomes a negative pressure, and the valve body 29a of the suction valve 29 is spaced apart upward from the valve seat portion 26 and opened.
As a result, the content liquid in the container body 10 is sucked up from the lower end opening of the suction pipe 28, passes through the suction pipe 28, and then flows into the pressurizing chamber 93 from the suction port 21 a.

At this time, the second valve portion 82 of the isobaric valve 80 is kept in pressure contact with the upper portion of the lower cylinder portion 63 of the plunger 60, so that the communication between the hydraulic pressure relief passage 91 and the air inflow passage 92 is kept blocked. Be drunk.
Note that the lower end portion of the third valve portion 83 of the isobaric valve 80 slides on the lower portion of the lower cylinder portion 63 almost simultaneously with the taper cylinder portion 67a starting to come into pressure contact with the small diameter cylinder portion 30b of the sleeve 30. The three-valve portion 83 is opened. Further, the tapered cylindrical portion 67a continues to be in pressure contact with the small diameter cylindrical portion 30b of the sleeve 30 until the plunger 60 reaches the upper limit position, that is, until the pump-up is completed.

  As the content liquid is pumped up, the inside of the container body 10 is depressurized to a negative pressure, and the negative pressure causes the first valve portion 81 of the isobaric valve 80 to be separated from the seal cylinder portion 30c of the sleeve 30 and to open. Then, the content liquid in the hydraulic pressure relief passage 91 flows into the container body 10 from the isobaric hole 27.

<Pump-up operation-latter half>
When the ball 71 reaches the vicinity of the lower end of the inclined groove 70 a in the cam groove 70 due to the rotation of the rotating ring 40, the upper portion of the lower cylinder portion 63 of the plunger 60 is detached upward from the second valve portion 82 of the isobaric valve 80. The second valve portion 82 slides on the lower portion of the lower cylinder portion 63, and the seal leg cylinder portion 67 of the skirt portion 62 of the plunger 60 starts to press against the lower end portion of the third valve portion 83.
Here, the movement range of the plunger 60 from this position to the maximum upper limit position is hereinafter referred to as an upper movement area.

  In this upper movement area, the second valve portion 82 of the isobaric valve 80 is opened, and the third valve portion 83 allows flow from the air inflow passage 92 to the hydraulic pressure relief passage 91 and flows in the opposite direction. Functions as a check valve to prevent

  By the way, as described above, the hydraulic pressure relief passage 91 communicates with the inside of the container body 10 and has a negative pressure. Therefore, the third valve portion 83 is opened away from the seal leg tube portion 67 by this negative pressure. It becomes a valve state. As a result, the air inflow passage 92 communicates with the inside of the container body 10 through the hydraulic pressure relief passage 91 and the equal pressure hole 27, and the air flows into the container body 10 through these passages. Become atmospheric pressure. This state continues until the plunger 60 reaches the maximum upper limit position.

As shown in FIG. 4, when the ball 71 reaches the lower end of the inclined groove 70a, that is, the lower end of the vertical groove 70b, the rotation of the rotating ring 40 is stopped and the plunger 60 is positioned at the uppermost limit position. . Thus, the pumping up of the content liquid is completed, the valve body 29a of the suction valve 29 is seated on the valve seat portion 26, and the suction valve 29 is closed.
Simultaneously with the completion of the pump-up, the first valve portion 81 of the equal pressure valve 80 is pressed against the seal tube portion 30c and closed, and the third valve portion 83 is pressed against the seal leg tube portion 67 and closed. Therefore, even if the liquid discharge container 1 is turned over in this state, the content liquid does not leak out of the liquid discharge container 1.

  As long as the discharge valve 51 is closed, the pressurizing chamber 93 is filled with the content liquid and thus becomes a sealed space. Therefore, even if the elastic restoring force of the spring 47 acts on the plunger 60, the plunger remains as it is. 60 never falls.

<Discharge operation>
After pumping up the content liquid as described above, as shown in FIG. 5, when the discharge head 56 is pushed down, the outlet cylinder 52 of the discharge valve 51 opposes the upward biasing force of the spring 55 against the inlet cylinder 53. Move down. At this time, the outlet cylinder 52 is elastically deformed with the inner peripheral edge of the valve body 54 facing downward, whereby the communication hole 118 of the outlet cylinder 52 is opened. Thereby, the discharge port 56a and the pressurizing chamber 93 are passed through the upper end portion 52a of the outlet tube 52, the communication hole 118, the communication gap 125, the lower end portion 53a of the inlet tube 53, and the main body portion 50a of the discharge tube 50. Communicate.
As a result, the plunger 60 is lowered by the elastic restoring force of the spring 47, and the content liquid in the pressurizing chamber 93 is discharged from the discharge port 56a. Note that when the plunger 60 is lowered, the ball 71 moves up the vertical groove 70 b of the cam groove 70 relative to the plunger 60.

As the plunger 60 descends toward the lowest limit position, the pressure in the hydraulic pressure relief passage 91 becomes negative. The negative pressure causes the third valve portion 83 of the isobaric valve 80 to move away from the seal leg tube portion 67 and open. Therefore, the air flows from the air inflow passage 92 into the hydraulic pressure relief passage 91.
When the plunger 60 descends and the upper portion of the lower cylinder portion 63 starts to come into pressure contact with the second valve portion 82 of the isobaric valve 80, that is, when the plunger 60 leaves the upper movement area, the hydraulic pressure relief passage 91 is sealed. Thereafter, the hydraulic pressure relief passage 91 is depressurized as the plunger 60 is lowered until the tapered cylindrical portion 67a of the plunger 60 is detached from the small diameter cylindrical portion 30b of the sleeve 30, that is, until reaching the lower movement range. Slightly negative pressure.

<Discharge end>
As shown in FIG. 1, the plunger 60 is lowered by the pushing-down operation of the discharge head 56, and the tapered cylindrical portion 67a of the plunger 60 is detached downward from the small-diameter cylindrical portion 30b of the sleeve 30 so as to be radially inward of the large-diameter cylindrical portion 30a. When the plunger 60 reaches the lower movement range, the hydraulic pressure relief passage 91 communicates with the pressurizing chamber 93, so that the positive pressure in the pressurizing chamber 93 is transmitted into the hydraulic pressure relief passage 91.

As a result, the pressure in the hydraulic pressure relief passage 91 becomes larger than the pressure in the container body 10, and the first valve portion 81 of the isobaric valve 80 is separated from the seal cylinder portion 30 c of the sleeve 30, Liquid (internal pressure) flows into the container main body 10 through the hydraulic pressure relief passage 91 and the equal pressure hole 27, and the pressure in the pressurizing chamber 93 is reduced accordingly, and the content from the discharge port 56a. Liquid discharge stops.
Thus, the discharge of the content liquid from the liquid discharge container 1 is completed.

As described above, according to the liquid discharge container 1 according to the present embodiment, the elastic seal member 58 continuously extending over the entire circumference is provided between the outer surface of the inlet tube 53 and the inner surface of the discharge tube 50. Since the outer surface of 53 and the inner surface of the discharge pipe 50 are tightly sealed, the elastic seal member 58 can function not only as a seal material but also as a buffer material. The sealing performance between the outer surface of the inlet tube 53 and the inner surface of the discharge tube 50 can be ensured while suppressing the load applied to the tube 50.
Further, since the elastic seal member 58 is a separate member from the discharge valve 51 and the discharge pipe 50, for example, it is possible to suppress the load applied to the connection portion between the discharge valve 51 and the discharge pipe 50 and the elastic seal member 58. In addition, the specification of the elastic seal member 58 can be selected according to the properties of the contents.
Here, in the case where the content liquid stored in the container body 10 is, for example, cosmetics, detergents, drugs, etc., in particular, if the liquid contains a liquid agent having high permeability to a resin material such as alcohol, the content Since the liquid penetrates into the discharge pipe 50 and the discharge pipe 50 is likely to deteriorate, the above-described effects of suppressing the load on the discharge pipe 50 are remarkably achieved.

Further, since the elastic seal member 58 is sandwiched between the outer surface of the inlet tube 53 and the inner surface of the discharge pipe 50 in the vertical direction instead of in the radial direction, a pressing force directed radially outward is applied to the discharge pipe 50. It is possible to prevent the discharge pipe 50 from being damaged over time.
In addition, since a radial gap is provided between the outer surface of the lower end portion 53a of the inlet cylinder 53 and the inner surface of the discharge pipe 50, a pressing force directed radially outward is applied to the discharge pipe 50. Can be surely prevented.

Further, at least one of the outer surface of the inlet tube 53 and the inner surface of the discharge pipe 50 is formed with the engaging portion 59 that engages with the other, so that only the inlet tube 53 and the discharge pipe 50 are kept in a combined state. For example, in the process of assembling the liquid discharge container 1, after the inlet tube 53 and the discharge tube 50 are combined with each other, the outlet tube 52 and the valve body 54 can be assembled to the assembly. The liquid discharge container 1 can be easily assembled.
Moreover, since the engaging portion 59 is formed in a portion located above the position where the elastic seal member 58 is disposed on at least one of the outer surface of the inlet tube 53 and the inner surface of the discharge pipe 50, For example, a portion of the discharge pipe 50 where the engagement portion 59 is located due to the fact that a pressing force directed radially outward is applied to the discharge pipe 50 by the engagement section 59, for example. Even if damage occurs, the liquid in the pressurizing chamber 93 is blocked by the elastic seal member 58 and can be prevented from leaking out of the discharge pipe 50.

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

For example, in the above-described embodiment, the fixing device 86 and the pressing leg 68 are provided, but these may be omitted. Moreover, the conversion mechanism 75 should just be provided between the rotation ring 40 and the plunger 60, and should just convert the rotation operation | movement of the rotation ring 40 into the raising operation | movement of the plunger 60, and is what was shown in the said embodiment. Not limited.
In the above embodiment, the equal pressure valve 80 includes the first valve portion 81, the second valve portion 82, and the third valve portion 83. However, the equal pressure hole 27 is opened and closed, and the outer peripheral surface of the plunger 60 is However, the present invention is not limited to this as long as it slides and switches communication between the hydraulic pressure relief passage 91 and the air inflow passage 92 and the blocking thereof.
In the above embodiment, the elastic seal member 58 is disposed between the lower surface of the stepped portion 53 d of the inlet tube 53 and the upper end opening edge of the main body portion 50 a of the discharge pipe 50. And the position of the discharge pipe 50 may be changed as appropriate.

Next, a second embodiment according to the present invention will be described. The basic configuration is the same as that of the first embodiment. For this reason, the same code | symbol is attached | subjected to the same structure, the description is abbreviate | omitted, and only a different point is demonstrated.
In the present embodiment, as shown in FIG. 6, the elastic seal member 58 is disposed between the outer surface of the lower end portion 53 a of the inlet tube 53 of the discharge valve 51 and the inner surface of the main body portion 50 a of the discharge pipe 50. Has been. In the illustrated example, a step portion 50e is formed on the inner surface of the main body portion 50a so as to face upward and to face the tapered portion 53e of the inlet tube 53 from below. The elastic seal member 58 is sandwiched in the vertical direction by the tapered portion 53e of the inlet tube 53 and the stepped portion 50e of the main body portion 50a, and among the tapered portion 53e of the inlet tube 53 and the inner surface of the main body portion 50a. The portion 50e is sandwiched in the radial direction by a portion continuous from above with the radially outer end portion.
As described above, according to the liquid discharge container 2 according to the present embodiment, since the elastic seal member 58 is disposed on the step portion 50e of the main body portion 50a of the discharge pipe 50, the inlet tube 53 of the discharge valve 51 is provided. A radial gap can be reliably provided between the outer surface of the lower end portion 53a and the inner surface of the main body portion 50a of the discharge pipe 50.
Further, an elastic seal member 58 is disposed between the outer surface of the inlet tube 53 and the inner surface of the discharge pipe 50, and engages at least one of the outer surface of the inlet tube 53 and the inner surface of the discharge tube 50 with the other. Since the engaging portion 59 is formed, the same effect as the first embodiment can be obtained.

  In addition, in the range which does not deviate from the meaning of this invention, it is possible to replace suitably the component in the embodiment mentioned above by the known component, and you may combine the modification mentioned above suitably.

DESCRIPTION OF SYMBOLS 1, 2 Liquid discharge container 10 Container main body 12 Container body opening 20 Cylinder 21a Suction port 29 Suction valve 40 Rotating ring 47 Spring (biasing mechanism)
DESCRIPTION OF SYMBOLS 50 Discharge pipe 51 Discharge valve 52 Outlet pipe | tube 52a Upper end part 53 of an exit pipe | tube 53 Inlet pipe | tube 53a Lower end part of an inlet pipe | tube 54 Valve body 56 Discharge head 56a Discharge port 58 Elastic seal member 59 Engagement part 60 Plunger 75 Conversion mechanism 93 Pressurization chamber

Claims (4)

A container body in which the liquid content is stored;
A lower end suction port is disposed in the container body, and a cylinder fixed to the container body;
A rotating ring rotatably attached to the cylinder;
A discharge pipe provided with a discharge valve in the upper part and having a lower opening located in the cylinder;
A cylindrical plunger that is disposed in the cylinder and is fitted in the discharge pipe in a fluid-tight manner so as to be vertically slidable and biased downward by a biasing mechanism;
A conversion mechanism that is provided between the rotating ring and the plunger and converts a rotating operation of the rotating ring with respect to the cylinder into an ascending operation of the plunger with respect to the cylinder;
A discharge head mounted on the discharge valve and formed with a discharge port for the content liquid;
A suction valve disposed in the suction port, allowing the inflow of the content liquid in the container body into the cylinder, and preventing the outflow of the content liquid in the cylinder into the container body;
A pressure chamber that is surrounded by the cylinder, the suction valve, the discharge pipe, and the plunger, and in which the content liquid that has flowed into the cylinder from the container body through the suction valve is stored;
An elastic seal member continuously extending over the entire circumference is arranged between the outer surface of the discharge valve and the inner surface of the discharge pipe in a state of tightly sealing between the outer surface of the discharge valve and the inner surface of the discharge pipe. A liquid discharge container characterized by being provided.   The liquid discharge container according to claim 1, wherein the elastic seal member is sandwiched between an outer surface of the discharge valve and an inner surface of the discharge pipe in the vertical direction. The lower end of the discharge valve is inserted into the discharge pipe,
The liquid discharge container according to claim 1, wherein a radial gap is provided between an outer surface of a lower end portion of the discharge valve and an inner surface of the discharge pipe.   In at least one of the outer surface of the discharge valve and the inner surface of the discharge pipe, an engaging portion that engages with the other is formed in a portion located above the position where the elastic seal member is disposed. The liquid discharge container according to claim 1, wherein the liquid discharge container is a liquid discharge container.

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