JP7050648B2 - Liquid discharge container - Google Patents

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 body in which the content liquid is stored, a suction port at the lower end are arranged in the container body, and a cylinder fixed to the container body and a cylinder. A rotating ring rotatably attached to the discharge pipe, a discharge pipe provided with a discharge valve at the top and a lower opening located inside the cylinder, and a discharge pipe arranged inside the cylinder, and liquid-tightly slid up and down to the discharge pipe. A tubular plunger that is movably fitted and urged downward by the urging portion is provided between the rotary ring and the plunger, and the rotary motion of the rotary ring with respect to the cylinder is raised with respect to the plunger cylinder. A conversion mechanism that converts to the container, a discharge head that is mounted on the discharge valve and has a discharge port for the content liquid, and a suction port that allows the content liquid in the container body to flow into the cylinder. It is surrounded by a suction valve that prevents the contents liquid in the cylinder from flowing out into the container body, a cylinder, a suction valve, a discharge pipe, and a plunger, and the contents liquid that has flowed into the cylinder from the inside of the container body through the suction valve is collected. A configuration including a pressurizing chamber is known.

JP-A-2015-227196A

However, in the conventional liquid discharge container, the lower end of the discharge valve is press-fitted into the discharge pipe to ensure the sealing property between the discharge valve and the discharge pipe, so that the discharge pipe is always radially outside. There is a possibility that a problem such as liquid leakage due to damage to the discharge pipe may occur with the passage of time, for example.

Therefore, an object of the present invention is to provide a liquid discharge container capable of ensuring a sealing property between a discharge valve and a discharge pipe while suppressing a load applied to the discharge pipe.

The present invention employs the following means to solve the above problems. That is, in the liquid discharge container of the present invention, the container body in which the content liquid is stored and the suction port at the lower end are arranged in the container body, and the upper end portion protrudes upward from the container body. A cylinder fixed to the container body, a rotating ring rotatably attached to the upper end of the cylinder, a discharge pipe provided with a discharge valve at the upper part and a lower opening located in the cylinder, and the above. It is arranged so as to be movable up and down in the cylinder, and as it moves up and down, the inner peripheral surface of the cylinder and the outer peripheral surface of the discharge pipe are liquid-tightly slid and urged downward by the urging portion. A tubular plunger and a conversion mechanism provided between the rotary ring and the plunger to convert the rotational motion of the rotary ring with respect to the cylinder into an ascending motion of the plunger with respect to the cylinder and the discharge pipe. , A discharge head mounted on the discharge valve and formed with a discharge port for the content liquid, and arranged at the suction port to allow the content liquid in the container body to flow into the cylinder, and the cylinder. It is surrounded by a suction valve that prevents the liquid inside from flowing out into the container body, the cylinder, the suction valve, the discharge pipe, and the plunger, and is surrounded by the suction valve from the inside of the container body to the inside of the cylinder. The conversion mechanism includes a pressurizing chamber in which the inflowing liquid is stored, and the conversion mechanism includes a relay member that supports the plunger so that it cannot rotate relative to the rotation ring and can move in the vertical direction. The relay member includes an annular top plate portion in which the upper portion of the discharge pipe is inserted inside, and the discharge pipe has a main body portion extending downward from the inside of the top plate portion and an upper end portion of the main body portion. It is provided with an outer protruding portion extending upward from the outer protrusion and a lower flange portion protruding outward in the radial direction from the upper end portion of the outer protruding portion, and the lower end portion of the discharge valve is inside the main body of the discharge pipe. The inlet cylinder inserted into the inlet cylinder, the outlet cylinder which is arranged so as to be movable downward while being urged upward with respect to the inlet cylinder, and the discharge head is mounted on the upper end portion, and the inside of the outlet cylinder and the inlet cylinder. The inlet cylinder is provided with a valve body that cuts off communication with the inside and communicates the inside of the inlet cylinder and the inside of the outlet cylinder when the outlet cylinder is moved downward with respect to the inlet cylinder, and the inlet cylinder is inside the outer protrusion. And the upper end is located above the upper end of the outer protrusion, and the inner protrusion protrudes outward in the radial direction from the upper end of the inner protrusion, and the lower surface is the upper surface of the lower flange. The upper flange portion is provided with an upper flange portion that is in contact with or close to the upper flange portion. An annular seal portion extending continuously over the entire circumference is disposed at least in a part between the lower surface of the lower flange portion and the upper surface of the lower flange portion, and the lower surface of the upper flange portion and the upper surface of the lower flange portion. An annular protrusion inserted into the annular groove formed on the other is formed on one of them, and the inner surface of the annular groove and at least a part of each of the annular protrusions are in radial contact with each other. Between the outer peripheral surface of the lower end of the inlet cylinder and the inner peripheral surface of the main body of the discharge pipe, and between the outer peripheral surface of the inner protruding portion and the inner peripheral surface of the outer protruding portion. A radial gap is provided on both sides over the entire circumference.

In the present invention, the inner surface of the annular groove and at least a part of each of the annular protrusions are in contact with each other in the radial direction, and the outer peripheral surface of the lower end portion of the inlet cylinder and the inner peripheral surface of the main body portion of the discharge pipe. , And between the outer peripheral surface of the inner protruding portion and the inner peripheral surface of the outer protruding portion, a radial gap is provided over the entire circumference, so that the outer peripheral surface of the inlet cylinder and the discharge pipe are provided. It is possible to prevent the inner peripheral surfaces from coming into contact with each other, and it is possible to suppress the application of a force toward the outside in the radial direction from the discharge valve to the discharge pipe, and it is possible to suppress the load applied to the discharge pipe.
An annular seal portion that extends continuously over the entire circumference is disposed at least in a part between the lower surface of the upper flange portion and the upper surface of the lower flange portion, and the lower surface of the upper flange portion and the upper surface of the lower flange portion. Since an annular protrusion inserted into the annular groove formed in the other is formed on one of them, the sealing property between the inlet cylinder of the discharge valve and the discharge pipe can be ensured.

Here, the outer peripheral surface of the lower end portion of the inlet cylinder and the main body portion of the discharge pipe are in contact with at least one of the inner surface of the annular groove and the annular protrusion in the radial direction. A support protrusion having a radial gap over the entire circumference is provided between the inner peripheral surface of the above, and between the outer peripheral surface of the inner protruding portion and the inner peripheral surface of the outer protruding portion. , Three or more may be formed at equal intervals in the circumferential direction.

In this case, since three or more support protrusions are arranged at equal intervals in the circumferential direction, the above-mentioned radial gap can be reliably secured over the entire circumference.

Further, the outer peripheral surface of the lower end portion of the inlet cylinder and the inner peripheral surface of the main body portion of the discharge pipe are close to each other, and the outer peripheral surface of the inner protruding portion and the inner peripheral surface of the outer protruding portion are May be close to each other.

In this case, the outer peripheral surface of the lower end of the inlet cylinder and the inner peripheral surface of the main body of the discharge pipe are close to each other, and the outer peripheral surface of the inner protruding portion and the inner peripheral surface of the outer protruding portion are close to each other. Therefore, the lower surface of the upper flange portion and the upper surface of the lower flange portion are in contact with each other or in close proximity to each other, and the outer peripheral surface of the lower end portion of the inlet cylinder and the main body of the discharge pipe. It is possible to almost eliminate the space between the inlet cylinder and the discharge pipe, which can communicate with the pressurizing chamber through the radial gap between the inner peripheral surface of the portion. Therefore, by rotating the rotating ring with respect to the cylinder and raising the plunger with respect to the cylinder and the discharge pipe, the pressure chamber is made a negative pressure to open the suction valve, and the content liquid in the container body is filled with the pressure chamber. It is possible to prevent the air between the inlet cylinder and the discharge pipe from flowing into the pressurizing chamber through the gap, and to stabilize the amount of the content liquid stored in the pressurizing chamber. can.

Here, the annular protrusion may be fitted in the annular seal portion.

In this case, since the annular protrusion is fitted in the annular seal portion, the sealing property between the inlet cylinder of the discharge valve and the discharge pipe can be reliably ensured.

Further, on the lower surface of the upper flange portion and the upper surface of the lower flange portion, the annular seal portion is disposed in a portion located radially outside the annular groove and the annular protrusion, and the annular seal portion is provided. The groove and the portion located inside the annular protrusion in the radial direction may abut against each other.

In this case, on each of the lower surface of the upper flange portion and the upper surface of the lower flange portion, an annular seal portion is disposed in a portion located radially outside the annular groove and the annular protrusion, and the annular groove and the annular protrusion are provided. Since the portions located on the inner side in the radial direction are in contact with each other, it is possible to seal between the lower surface of the upper flange portion and the upper surface of the lower flange portion over almost the entire area in the radial direction. It is possible to more reliably secure the sealing property between the inlet cylinder of the valve and the discharge pipe.

According to the present invention, it is possible to secure the sealing property between the discharge valve and the discharge pipe while suppressing the load applied to the discharge pipe.

It is a semi-vertical sectional view which shows one Embodiment of the liquid discharge container which concerns on this invention. It is a partially enlarged view of the liquid discharge container of FIG. It is a figure which shows the state which started to rotate the rotation ring from the state shown in FIG. It is a figure which shows the state which the rotation of the rotation ring is completed from the state shown in FIG. It is a figure which shows the state which pushed down the discharge head from the state shown in FIG. It is a partially enlarged view of the modification of the liquid discharge container which concerns on this invention.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the liquid discharge container 1 includes a container body 10 in which the content liquid is housed. The container body 10 is formed in a bottomed cylindrical shape having a mouth portion 12, a body portion 11, and a bottom portion provided with male threads on the outer peripheral surface.
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 portion 12 side is referred to as an upper side and the bottom side is referred to as a lower side along the container axis O direction, and the direction along the container axis O. Is called the vertical direction. Further, in a plan view seen from the container axis O direction, the direction intersecting the container axis O is referred to as the radial direction, and the direction rotating around the container axis O is referred to as the circumferential direction.

The cylinder 20 is fixed to the mouth portion 12 of the container body 10. The suction port 21a formed at the lower end of the cylinder 20 is arranged in the container body 10. In the illustrated example, the cylinder 20 is formed in a multi-stage cylindrical shape coaxially arranged with the container shaft O, and the first cylinder portion 21, the second cylinder portion 22, and the third cylinder portion 23 are formed from the lower side to the upper side. And the fourth cylinder portion 24 is connected in this order, and the inner diameter and the outer diameter of these cylinder portions 21 to 24 are larger as they are located on the upper side.

The screw cylinder portion 25 protrudes outward in the radial direction and extends downward from substantially the center of the fourth cylinder portion 24 in the vertical direction. A female screw 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 arranged between the upper end opening edge of the mouth portion 12 and the screw cylinder portion 25.

The upper end portion of the first cylinder portion 21 and the lower end portion of the second cylinder portion 22 are connected via an annular valve seat portion 26. The valve seat portion 26 is arranged coaxially with the container shaft O.
The inside of the first cylinder portion 21 is the suction port 21a, and the upper end portion of the suction pipe 28 is fitted inside the first cylinder portion 21. The lower end opening of the suction pipe 28 is located at the bottom of the container body 10. The suction port 21a is provided with 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 out into the container body 10. .. The suction valve 29 has a valve body 29a that is in contact with the upper surface of the valve seat portion 26 so as to be able to separate upward.
At the lower end of the third cylinder portion 23, a plurality of isobaric holes 27 penetrating in the radial direction are formed at intervals in the circumferential direction.

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

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

The substantially upper half of the fourth cylinder portion 24 (hereinafter, referred to as the upper end portion 20a of the cylinder 20) protrudes upward from the container main body 10. A plurality of vertical grooves 31 having a semicircular cross section are provided on the inner peripheral surface of the upper end portion 20a of the cylinder 20 at equal intervals in the circumferential direction, and the first protrusion 24a is provided on the outer peripheral surface of the upper end portion 20a of the cylinder 20. Has been done. A rotating ring 40 arranged coaxially with the container shaft O is mounted on the upper end portion 20a of the cylinder 20 so as to be rotatable in the circumferential direction and immovable in the vertical direction.

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

The discharge pipe 50 is made of a resin material such as polypropylene or polyethylene, is arranged coaxially with the container shaft O, and is integrally inserted inside the top plate portion 46 of the relay member 42 and the inside of the cylinder 20, which will be described later. ing.
As shown in FIG. 2, the discharge pipe 50 has a main body portion 50a extending downward from the inside of the top plate portion 46, an outer protruding portion 50b extending upward from the upper end portion of the main body portion 50a, and an outer protruding portion. A lower flange portion 50c protruding outward in the radial direction from the upper end portion of the 50b is provided.

The main body portion 50a is fitted in the top plate portion 46. The lower end edge of the main body portion 50a is located inside the third cylinder portion 23 of the cylinder 20. The outer protruding portion 50b is located above the top plate portion 46. The inner diameter and outer diameter of the outer protruding portion 50b are larger than the inner diameter and outer diameter of the main body portion 50a. 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 fixed to the discharge pipe 50, and the lower end portion 53a is arranged so as to be movable downward with respect to the inlet cylinder 53 in which the lower end portion 53a is inserted into the main body portion 50a of the discharge pipe 50 and the inlet cylinder 53 in an upwardly urged state. When the outlet cylinder 52 is provided and the discharge head 56 is attached to the upper end 52a, the communication between the inside of the outlet cylinder 52 and the inside of the inlet cylinder 53 is cut off, and the outlet cylinder 52 moves downward with respect to the inlet cylinder 53, the inlet A valve body 54 for communicating the inside of the cylinder 53 and the inside of the outlet cylinder 52, and a spring 55 for urging the outlet cylinder 52 upward are provided.

The inlet cylinder 53 has a lower end portion 53a inserted into the upper end portion of the main body portion 50a of the discharge pipe 50 and an inner end portion inserted into the outer protruding portion 50b and the upper end portion located above the upper end portion of the outer protruding portion 50b. It is provided with a protruding portion 53b and an upper flange portion 53c that protrudes outward in the radial direction from the upper end portion of the inner protruding portion 53b and whose lower surface abuts or is close to the upper surface of the lower flange portion 50c.

The inner protrusion 53b extends upward from the upper end of the lower end 53a. The inner diameter and outer diameter of the inner protruding portion 53b are larger than the inner diameter and outer diameter of the lower end portion 53a. Between the outer peripheral surface of the lower end portion 53a of the inlet cylinder 53 and the inner peripheral surface of the main body portion 50a of the discharge pipe 50, and between the outer peripheral surface of the inner protruding portion 53b and the inner peripheral surface of the outer protruding portion 50b. A radial gap is provided on both sides of the space over the entire circumference. The outer peripheral surface of the lower end portion 53a of the inlet cylinder 53 and the inner peripheral surface of the main body portion 50a of the discharge pipe 50 are close to each other, and the outer peripheral surface of the inner protruding portion 53b and the inner peripheral surface of the outer protruding portion 50b. Are in close proximity to each other.
The radial size of each of the above-mentioned gaps is the same over the entire circumference, and is smaller than the wall thickness of the inlet cylinder 53 and the discharge pipe 50.

The connecting portion between the lower end portion 53a and the inner protruding portion 53b of the inlet cylinder 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. are doing. In the illustrated example, a vertical gap 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 step 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.

An annular seal portion 101 extending continuously over the entire circumference is disposed at least in a part between the lower surface of the upper flange portion 53c and the upper surface of the lower flange portion 50c. The annular seal portion 101 is formed of an elastic material such as a soft resin or rubber. The annular seal portion 101 is arranged between the outer peripheral portions of the upper flange portion 53c and the lower flange portion 50c.
An annular protrusion 53e that protrudes downward and is fitted in the annular seal portion 101 is formed on the lower surface of the upper flange portion 53c. An annular groove 50e into which an annular projection 53e is inserted is formed on the upper surface of the lower flange portion 50c. On the lower surface of the upper flange portion 53c and the upper surface of the lower flange portion 50c, the annular seal portion 101 is arranged at a portion located radially outside the annular groove 50e and the annular protrusion 53e.
The annular groove 50e and the annular protrusion 53e extend continuously over the entire circumference. The annular groove 50e does not penetrate the lower flange portion 50c in the vertical direction.

The annular protrusion 53e may be formed on the upper surface of the lower flange portion 50c, and the annular groove 50e may be formed on the lower surface of the upper flange portion 53c.
On the lower surface of the upper flange portion 53c and the upper surface of the lower flange portion 50c, the annular groove 50e and the portions located radially inside the annular projection 53e (hereinafter referred to as inner portions) are in contact with each other. Of the upper surface of the lower flange portion 50c, the inner portion projects upward from a portion located on the outer side in the radial direction from the annular groove 50e and the annular protrusion 53e. The vertical positions of the inner portion of the upper surface of the lower flange portion 50c and the upper surface of the annular seal portion 101 are equal to each other.

At least one of the inner surface of the annular groove 50e and the annular projection 53e is formed with three or more support protrusions 50d that are in contact with the other in the radial direction at equal intervals in the circumferential direction.
The support protrusion 50d is formed on the inner surface of the annular groove 50e on at least one of the inner side surface located on the inner side in the radial direction and facing the outer side in the radial direction and the inner peripheral surface of the annular protrusion 53e.
In the illustrated example, eight support protrusions 50d are formed on the inner surface of the annular groove 50e at equal intervals in the circumferential direction. All the support protrusions 50d are in radial contact with the annular projection 53e. The inner surface of the annular groove 50e gradually extends inward in the radial direction as it goes upward. This inner surface has a larger inclination angle in the vertical direction than the outer surface of the inner surface of the annular groove 50e, which is located on the outer side in the radial direction and faces the inner side in the radial direction.

The support protrusion 50d is formed in a strip shape extending along the inner surface of the annular groove 50e in a vertical cross-sectional view. The amount of protrusion of the support protrusion 50d from the inner surface of the annular groove 50e gradually decreases as it goes upward.
The support protrusion 50d may be formed on the annular projection 53e, or may be formed on both the inner surfaces of the annular projection 53e and the annular groove 50e. The support protrusion 50d may be formed on the outer surface of the annular groove 50e. The protrusion amount of the support protrusion 50d may be made equal over the entire length in the longitudinal direction thereof.

The outlet cylinder 52 includes an upper end portion 52a protruding upward from the inlet cylinder 53, and a lower portion 52b arranged inside the inner protruding portion 53b of the inlet cylinder 53. Between the outer peripheral surface of the lower portion 52b and the inner peripheral surface of the inner protruding portion 53b of the inlet cylinder 53, a communication gap communicating with the inside of the main body portion 50a of the discharge pipe 50 through the inside of the lower end portion 53a of the inlet cylinder 53. 125 is provided. The upper end portion 52a of the outlet cylinder 52 is formed in a bottomed cylinder shape. A communication hole 118 capable of communicating the inside thereof and the communication gap 125 is formed in the upper end portion 52a.

The valve body 54 is formed in an annular shape, and the outlet cylinder 52 is tightly 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 upper flange portion 53c of the inlet cylinder 53.
Here, the lower portion 52b of the outlet cylinder 52 is formed with an annular groove that opens downward and is arranged coaxially with the container shaft O. 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 stepped portion 53d of the inlet cylinder 53.

In the above configuration, when the outlet cylinder 52 is moved downward with respect to the inlet cylinder 53 against the upward urging force of the spring 55, the outlet cylinder 52 elastically deforms toward the inner peripheral edge portion of the valve body 54 downward. By doing so, the communication hole 118 of the outlet cylinder 52 is opened. As a result, the inside of the main body portion 50a of the discharge pipe 50 and the inside of the upper end portion 52a of the outlet cylinder 52 communicate with each other through the inside of the lower end portion 53a of the inlet cylinder 53, the communication gap 125, and the communication hole 118. The discharge valve 51 may be appropriately changed as long as it has a configuration in which such an action is exhibited.

Here, the discharge pipe 50 and the discharge valve 51 are integrally fixed by a ridged cylindrical crimping metal fitting 102. The top wall of the crimping metal fitting 102 is formed in an annular shape and is arranged coaxially with the container shaft O. Inside the top wall, the upper end portion 52a of the outlet cylinder 52 is slidably fitted downward. Of the crimping metal fittings 102, the lower flange portion 50c of the discharge pipe 50 is fitted in the peripheral wall, and the upper surface of the upper flange portion 53c and the upper surface of the valve body 54 are pressed against the lower surface of the top wall. The peripheral wall of the crimping metal fitting 102 is arranged inside the mounting cylinder portion 41b of the rotating ring 40.

The discharge head 56 is provided with a mounting cylinder portion 56b inserted into the neck cylinder portion 41a of the rotating ring 40, as well as forming a discharge port 56a for the content liquid. The upper end portion 52a of the outlet cylinder 52 is fitted in the mounting cylinder portion 56b. The discharge port 56a communicates with the upper end portion 52a 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 shaft O is arranged in the cylinder 20 so as to be movable up and down. The plunger 60 slides on the inner peripheral surface of the cylinder 20 and the outer peripheral surface of the discharge pipe 50 in a liquid-tight manner as it moves up and down.
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 located radially outside the lower cylinder portion 63, and a ring plate portion 65 connecting them. The inner peripheral edge portion of the ring plate portion 65 projects radially inward from the lower cylinder portion 63, and the inner end edge thereof extends in both the upper and lower directions.

The outer diameter of the lower cylinder portion 63 is smaller than the inner diameter of the small diameter cylinder portion 30b of the sleeve 30. A communication groove 63a that opens downward and extends in the vertical direction is formed on the outer peripheral surface of the lower cylinder portion 63.
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. Hereinafter, the portion of the lower cylinder portion 63 in which the communication groove 63a is formed is referred to as a lower portion of the lower cylinder portion 63, and the portion of the lower cylinder portion 63 above the lower portion is referred to as an upper portion.

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

The inner diameter of the support cylinder portion 66 is the same as 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 liquidally seals between the drive cylinder portion 61, the skirt portion 62, and the discharge pipe 50, and slides on the outer peripheral surface of the discharge pipe 50 in a liquidtight manner.

The seal leg cylinder portion 67 projects downward from the lower cylinder portion 63 of the drive cylinder portion 61. The outer diameter of the seal leg cylinder portion 67 is the same as the outer diameter of the lower cylinder portion 63. The lower end of the seal leg cylinder portion 67 is a tapered cylinder portion 67a whose diameter is gradually increased toward the bottom. The outer diameter of the lower end edge of the tapered cylinder portion 67a is smaller than the inner diameter of the large diameter cylinder portion 30a of the sleeve 30, and a radial gap is provided between the tapered cylinder portion 67a and the large diameter cylinder portion 30a. .. The outer diameter of the lower end edge of the tapered cylinder portion 67a is equal to or slightly larger than the inner diameter of the small diameter cylinder portion 30b of the sleeve 30. The tapered cylinder portion 67a slides on the inner peripheral surface of the small diameter cylinder portion 30b.

A plurality of holding legs 68 are arranged at intervals in the circumferential direction. Each holding leg portion 68 presses the upper surface of the valve body 29a of the suction valve 29 when the plunger 60 is located at the lowermost position. As a result, the valve body 29a is sandwiched in the vertical direction by the holding leg portion 68 and the valve seat portion 26, and the 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 that has flowed into the cylinder 20 from the inside of the container body 10 through the suction valve 29 is stored. There is.

A conversion mechanism 75 is provided between the rotary ring 40 and the plunger 60 to convert the rotary motion of the rotary ring 40 with respect to the cylinder 20 into an ascending motion of the plunger 60 with respect to the cylinder 20 and the discharge pipe 50. Hereinafter, the conversion mechanism 75 will be described.

Of the plunger 60, on the outer peripheral surface of the upper cylinder portion 64 located in the fourth cylinder portion 24 of the cylinder 20, a plurality of vertical grooves 70b arranged at intervals in the circumferential direction and extending in the vertical direction, and a plurality of vertical grooves 70b in the circumferential direction A semi-circular cam groove 70 having 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.
The ball 71 is integrally rotatably engaged with the cam groove 70 and the vertical groove 31 of the cylinder 20. That is, half of the ball 71 is inserted into the cam groove 70, and the other half is inserted into the vertical groove 31.

The relay member 42 supports the plunger 60 so as to be relatively movable in the vertical direction without being able to rotate relative to the rotating ring 40.
The relay member 42 includes an outer cylinder portion 43 that surrounds the fourth cylinder portion 24 of the cylinder 20 from the radial outside, an inner cylinder portion 44 arranged radially inside the outer cylinder portion 43, an outer cylinder portion 43, and an inner cylinder. An annular top plate portion 46 that connects the upper ends of the portions 44 to each other, and an upper cylinder portion 45 that protrudes upward from the top plate portion 46 are provided.

The inner peripheral edge portion of the top plate portion 46 projects radially inward from the inner cylinder portion 44. The connecting portion between the upper end portion of the main body portion 50a and the lower end portion of the outer protruding portion 50b is in contact with or close to the inner peripheral edge portion on the upper surface of the top plate portion 46.
On the inner peripheral surface of the outer cylinder portion 43, a second protrusion 43a that engages with the first protrusion 24a formed on the outer peripheral surface of the upper end portion 20a of the cylinder 20 from below the first protrusion 24a is formed. ing.

The upper cylinder portion 45 has a smaller diameter than the outer cylinder portion 43 and a larger diameter than the inner cylinder portion 44. On the outer peripheral surface of the upper cylinder portion 45, a third protrusion 45a that engages with the first groove portion 40a formed on the inner surface of the rotating ring 40 is formed. By engaging the third protrusion 45a of the relay member 42 with the first groove portion 40a of the rotary ring 40, the relative rotational movement of the rotary ring 40 and the relay member 42 in the circumferential direction 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 downwardly movable. By engaging the fourth protrusion 44a of the relay member 42 with the second groove portion 64a of the plunger 60, the rotational movement of the plunger 60 and the relay member 42 in the relative circumferential direction is restricted, and the plunger 60 is restricted. Ascending movement with respect to the relay member 42 is allowed.

The plunger 60 is urged downward by a spring (biased portion) 47 interposed between the plunger 60 and the relay member 42. Therefore, the ball 71 is always sandwiched in the vertical direction by 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 rotary ring 40 is rotated with respect to the container main body 10 in a state where the ball 71 is engaged with the upper end of the inclined groove 70a, the ball 71 has the same height as shown in FIG. At this position, the plunger 60 rises because it is in a state of relatively descending along the inclined groove 70a along the inclined groove 70a. At this time, the plunger 60 compresses the spring 47.
Then, as shown in FIG. 4, when the ball 71 shifts from the lower end of the inclined groove 70a of the cam groove 70 to the lower end of the vertical groove 70b at the same height position as the rotation ring 40 further rotates, the spring 47 The plunger 60 can be lowered by the elastic restoring force of. When the plunger 60 descends, the ball 71 relatively ascends the vertical groove 70b and finally reaches the upper end of the adjacent inclined groove 70a.

In this way, the plunger 60 is arranged so as to be relatively non-rotatable with respect to the rotating ring 40 and relatively movable in the vertical direction, and the cylinder 20 and the plunger 60 are composed of a vertical groove 31, a cam groove 70, and a ball 71. Since it is connected via the cam mechanism, the plunger 60 can be raised against the downward urging force of the spring 47 by rotating the rotating ring 40 with respect to the container body 10, and then the plunger 60 can be raised against the downward urging force of the spring 47. The plunger 60 can be lowered by the elastic restoring force of the spring 47.
As described above, in the ball 71, the cam groove 70 including the inclined groove 70a and the vertical groove 70b moves relatively with the rotation operation of the rotating ring 40 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 46a penetrating in the vertical direction are formed at a portion located between the outer cylinder portion 43 and the upper cylinder portion 45 at intervals in the circumferential direction. The upper end of the spring 47 is supported by the inner peripheral edge of the lower surface of the top plate 46, and the lower end of the spring 47 is supported by the upper surface of the ring plate 65 of the plunger 60. Inside the lower end portion of the spring 47, a portion of the inner end edge of the ring plate portion 65 that protrudes upward is inserted.

An isobaric valve 80 is arranged at the upper end of the third cylinder portion 23 of the cylinder 20.
The isobaric valve 80 is formed in an annular shape and is arranged coaxially with the container shaft O. The isobaric valve 80 includes a valve body 84 whose lower surface is supported by the upper end opening edge of each of the third cylinder portion 23 and the seal cylinder portion 30c, and a first valve portion 81 which is in contact with the seal cylinder portion 30c so as to be detachable. A second valve portion 82 that slides on the outer peripheral surface of the lower cylinder portion 63 and a third valve portion 83 that is in contact with the plunger 60 so as to be detachable are provided. The isobaric valve 80 is made of an elastic material such as a soft resin or rubber.

A hydraulic pressure relief passage 91 is formed on the lower side and an air inflow passage 92 is formed on the upper side with the isobaric valve 80 sandwiched between the cylinder 20 and the plunger 60.

The hydraulic pressure relief passage 91 communicates with the pressurizing chamber 93 when the tapered cylinder portion 67a of the plunger 60 faces the large diameter cylinder portion 30a of the sleeve 30 in the radial direction, and as shown in FIGS. 3 and 4, the hydraulic pressure relief passage 91 communicates with the pressurizing chamber 93. 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 cut off. 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 when the plunger 60 is located at the lowermost position, it communicates with the pressurizing chamber 93, and the plunger 60 is the most. When it is located above the lower limit position, the communication with the pressurizing chamber 93 is cut off. The hydraulic pressure relief passage 91 can communicate with the inside of the container body 10 through the isobaric hole 27 formed in the third cylinder portion 23.

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 a gap between the drive cylinder portion 61 of the plunger 60 and the fourth cylinder portion 24 of the cylinder 20, a cam groove 70. The outside air can be introduced by communicating with the outside through 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 extends downward from the valve main body 84 and has a cylindrical shape arranged coaxially with the container shaft O. The lower end 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 detachable, and the isobaric hole 27 is closed so as to be openable. The isobaric hole 27 communicates with 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 separates 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 cylinder portion 30c. The first valve portion 81 operates by 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 inside of the container main body 10 to the hydraulic pressure relief passage 91, and the hydraulic pressure relief passage 81. It functions as a check valve that allows only distribution 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, and is an annular protrusion that protrudes inward in the radial direction and continuously extends over the entire circumference. Two second valve portions 82 may be formed, for example, with an interval in the vertical direction. The second valve portion 82 is liquidt tightly slidably fitted to the upper portion of the lower cylinder portion 63 of the drive cylinder portion 61. When the second valve portion 82 slides on the lower portion of the lower cylinder portion 63, the portion located above and the portion located below the second valve portion 82 on the outer peripheral side of the lower cylinder portion 63 are formed. It communicates through the communication groove 63a. That is, the second valve portion 82 is in the valve closed state when sliding the upper portion of the lower cylinder portion 63, and is in the valve open state when sliding the lower portion of the lower cylinder portion 63.

The third valve portion 83 extends downward from a portion of the valve body 84 located radially inside the first valve portion 81. The third valve portion 83 is formed in a cylindrical shape arranged coaxially with the container shaft O. The lower end portion of the third valve portion 83 is fitted to 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 liquid-tightly slidable. 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 located above and below the third valve portion 83 on the outer peripheral side of the lower cylinder portion 63. The portion communicates with the communication groove 63a. That is, the third valve portion 83 is in the valve closed state when the upper portion of the lower cylinder portion 63 and the seal leg cylinder portion 67 are slid, and the valve is opened when the lower portion of the lower cylinder portion 63 is slid. 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 valve 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 relief passage 91.
In this way, the isobaric valve 80 is provided between the hydraulic relief passage 91 and the air inflow passage 92, opens and closes the isobaric hole 27, and slides up and down on the outer peripheral surface of the plunger 60 to release the hydraulic pressure. The communication between the passage 91 and the air inflow passage 92 and the interruption thereof are switched.
Further, in the present embodiment, a fixture 86 for sandwiching the isobaric valve 80 in the vertical direction with the cylinder 20 and fixing the isobaric valve 80 to the cylinder 20 is provided. In the illustrated example, the fixture 86 is formed in an annular shape coaxially arranged with the container shaft O, and sandwiches the isobaric valve 80 in the vertical direction with the inner surface of the cylinder 20.

(Action of liquid discharge container)
Next, the operation of the liquid discharge container 1 configured as described above will be described.
<Unpressurized state>
As shown in FIG. 1, in the non-pressurized state in which the liquid discharge container 1 is not in use, the suction valve 29 and the discharge valve 51 are in the closed state, and the plunger 60 is located at the lowermost position. At the same time, the holding leg portion 68 presses the upper surface of the valve body 29a 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 isobaric valve 80 is in pressure contact with the seal cylinder portion 30c of the sleeve 30 in the cylinder 20 to block the 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 in the plunger 60 to block the communication between the hydraulic pressure relief passage 91 and the air inflow passage 92.
The discharge valve 51 is maintained in the 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. As the plunger 60 rises, the holding leg portion 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 lowermost lower limit position to just before the tapered cylinder portion 67a of the plunger 60 presses against the small diameter cylinder portion 30b of the sleeve 30 is hereinafter referred to as a lower movement region. In this lower moving area, 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 in contact with each other. Continue to block communication with 92.

Then, as shown in FIG. 3, when the plunger 60 exceeds the lower moving region and the tapered cylinder portion 67a of the plunger 60 is pressed against the small diameter cylinder portion 30b of the sleeve 30, the pressurizing chamber is subsequently raised as the plunger 60 rises. 93 becomes a negative pressure, and the valve body 29a of the suction valve 29 is separated upward from the valve seat portion 26 and opened by this negative pressure.
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 21a.

At this time, since the second valve portion 82 of the isobaric valve 80 continues to be in pressure contact with the upper portion of the lower cylinder portion 63 of the plunger 60, the communication between the hydraulic pressure relief passage 91 and the air inflow passage 92 is maintained in a state of being cut off. Dripping.
Almost at the same time that the tapered cylinder portion 67a starts to press contact with the small diameter cylinder portion 30b of the sleeve 30, 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, and the first 3 The valve portion 83 is in the valve open state. Further, the tapered cylinder portion 67a continues to be in pressure contact with the small diameter cylinder portion 30b of the sleeve 30 until the plunger 60 reaches the upper limit position, that is, until the pump-up is completed.

Then, as the content liquid is pumped up, the pressure inside the container body 10 is reduced to a negative pressure, and the negative pressure causes the first valve portion 81 of the isobaric valve 80 to separate from the seal cylinder portion 30c of the sleeve 30 and open the valve. 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-second half>
When the ball 71 reaches the vicinity of the lower end of the inclined groove 70a in the cam groove 70 due to the rotation of the rotary ring 40, the upper portion of the lower cylinder portion 63 of the plunger 60 is separated 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 begins to press contact with the lower end portion of the third valve portion 83.
Here, the movement range of the plunger 60 from this position to the upper limit position is hereinafter referred to as an upper movement area.

In this upper moving region, the second valve portion 82 of the isobaric valve 80 is in the valve open state, and the third valve portion 83 allows distribution from the air inflow passage 92 to the hydraulic pressure escape passage 91 and flows in the opposite direction. Functions as a check valve to prevent.

By the way, as described above, since the hydraulic pressure relief passage 91 communicates with the inside of the container body 10 and becomes a negative pressure, the third valve portion 83 opens apart from the seal leg cylinder portion 67 due to this negative pressure. It becomes a valve state. As a result, the air inflow passage 92 communicates with the container body 10 through the hydraulic escape passage 91 and the isobaric hole 27, the air flows into the container body 10 through these passages, and the inside of the container body 10 is large. It becomes atmospheric pressure. This state continues until the plunger 60 reaches the upper limit position.

Then, 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 rotation ring 40 is stopped, and the plunger 60 is positioned at the uppermost upper limit position. .. As a result, 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.
Further, at the same time as the pump-up is completed, the first valve portion 81 of the isobaric valve 80 is pressed against the seal cylinder portion 30c to close the valve, and the third valve portion 83 is pressed against the seal leg cylinder portion 67 to close the valve. Therefore, even if the liquid discharge container 1 is rolled over in this state, the content liquid does not leak to the outside 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 closed space. Therefore, even if the elastic restoring force of the spring 47 acts on the plunger 60, the plunger is left as it is. 60 never descends.

<Discharge operation>
After pumping up the content liquid as described above, when the discharge head 56 is pushed down as shown in FIG. 5, the outlet cylinder 52 of the discharge valve 51 opposes the upward urging force of the spring 55 with respect to the inlet cylinder 53. And move downward. At this time, the outlet cylinder 52 elastically deforms the inner peripheral edge portion of the valve body 54 downward, so that the communication hole 118 of the outlet cylinder 52 is opened. As a result, the discharge port 56a and the pressurizing chamber 93 pass through the upper end portion 52a of the outlet cylinder 52, the communication hole 118, the communication gap 125, the lower end portion 53a of the inlet cylinder 53, and the main body portion 50a of the discharge pipe 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. When the plunger 60 is lowered, the ball 71 ascends the vertical groove 70b of the cam groove 70 relative to the plunger 60.

As the plunger 60 descends toward the lowermost position, the inside of the hydraulic pressure relief passage 91 becomes negative pressure, but this negative pressure separates the third valve portion 83 of the isobaric valve 80 from the seal leg cylinder portion 67 and opens the valve. Since the state is reached, the air flows into the hydraulic pressure escape passage 91 from the air inflow passage 92.
When the plunger 60 descends and the upper portion of the lower cylinder portion 63 begins to press contact with the second valve portion 82 of the isobaric valve 80, that is, when the plunger 60 leaves the upper movement region, the hydraulic pressure relief passage 91 is sealed. After that, until the tapered cylinder portion 67a of the plunger 60 separates from the small diameter cylinder portion 30b of the sleeve 30, that is, until it reaches the lower moving region, the hydraulic pressure relief passage 91 is depressurized as the plunger 60 descends. The pressure becomes slightly negative.

<End of discharge>
The plunger 60 is lowered by the pushing down operation of the discharge head 56, and as shown in FIG. 1, the tapered cylinder portion 67a of the plunger 60 is separated downward from the small diameter cylinder portion 30b of the sleeve 30 and is radially inside the large diameter cylinder portion 30a. That is, when the plunger 60 reaches the lower moving area, the hydraulic pressure relief passage 91 communicates with the pressurizing chamber 93, so that the positive pressure in the pressurizing chamber 93 is transmitted to 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, the first valve portion 81 of the isobaric valve 80 is separated from the seal cylinder portion 30c of the sleeve 30, and the inside of the pressurizing chamber 93. The liquid (internal pressure) of the above flows into the container main body 10 through the hydraulic pressure relief passage 91 and the isobaric hole 27, and the pressure in the pressurizing chamber 93 is reduced accordingly, and the content from the discharge port 56a is reduced. Liquid discharge stops.
As a result, 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 support protrusion 50d that is in radial contact with the annular protrusion 53e is formed on the inner surface of the annular groove 50e, and thus the inlet. Between the outer peripheral surface of the lower end portion 53a of the cylinder 53 and the inner peripheral surface of the main body portion 50a of the discharge pipe 50, and between the outer peripheral surface of the inner protruding portion 53b and the inner peripheral surface of the outer protruding portion 50b. It is possible to provide a radial gap over the entire circumference of both of the above, and it is possible to prevent the outer peripheral surface of the inlet cylinder 53 and the inner peripheral surface of the discharge pipe 50 from coming into contact with each other. Therefore, it is possible to suppress the application of a force outward from the discharge valve 51 to the discharge pipe 50 in the radial direction, and it is possible to suppress the load applied to the discharge pipe 50.

Since three or more support protrusions 50d are arranged at equal intervals in the circumferential direction, the above-mentioned radial gap can be secured over the entire circumference.
An annular seal portion 101 extending continuously over the entire circumference is disposed at least in a part between the lower surface of the upper flange portion 53c and the upper surface of the lower flange portion 50c, and a lower flange is provided on the lower surface of the upper flange portion 53c. Since the annular protrusion 53e inserted into the annular groove 50e formed on the upper surface of the portion 50c is formed, the sealing property between the inlet cylinder 53 of the discharge valve 51 and the discharge pipe 50 can be ensured.

Since the annular projection 53e is fitted in the annular seal portion 101, the sealing property between the inlet cylinder 53 of the discharge valve 51 and the discharge pipe 50 can be reliably ensured.
On the lower surface of the upper flange portion 53c and the upper surface of the lower flange portion 50c, the annular seal portion 101 is disposed radially outside the annular groove 50e and the annular protrusion 53e, and the annular groove 50e, Since the portions located inside the annular projection 53e in the radial direction are in contact with each other, the lower surface of the upper flange portion 53c and the upper surface of the lower flange portion 50c should be sealed over almost the entire area in the radial direction. This makes it possible to more reliably secure the sealing property between the inlet cylinder 53 of the discharge valve 51 and the discharge pipe 50.

Further, in the present embodiment, three or more support protrusions 50d are arranged at equal intervals in the circumferential direction, and all the support protrusions 50d are in contact with the annular projection 53e in the radial direction. Therefore, when the inlet cylinder 53 is inserted into the discharge pipe 50, a plurality of support protrusions 50d are in sliding contact with the inner surface of the annular groove 50e, and the relative positions of the inlet cylinder 53 and the discharge pipe 50 in the radial direction are easily determined. Can be decided.

The outer peripheral surface of the lower end portion 53a of the inlet cylinder 53 and the inner peripheral surface of the main body portion 50a of the discharge pipe 50 are close to each other, and the outer peripheral surface of the inner protruding portion 53b in the inlet cylinder 53 and the outer peripheral surface of the discharge pipe 50 project outward. Since the inner peripheral surface of the portion 50b is close to each other, and the lower surface of the upper flange portion 53c in the inlet cylinder 53 and the upper surface of the lower flange portion 50c in the discharge pipe 50 are in contact with each other or close to each other. The inlet cylinder 53 and the discharge pipe 50 can communicate with the pressurizing chamber 93 through a radial gap between the outer peripheral surface of the lower end portion 53a of the inlet cylinder 53 and the inner peripheral surface of the main body portion 50a of the discharge pipe 50. The space between and can be almost eliminated. Therefore, by rotating the rotating ring 40 with respect to the cylinder 20 and raising the plunger 60 with respect to the cylinder 20 and the discharge pipe 50, the pressure chamber 93 is made a negative pressure and the suction valve 29 is opened, and the container body 10 is opened. When the content liquid inside is stored in the pressurizing chamber 93, it becomes possible to prevent the air between the inlet cylinder 53 and the discharge pipe 50 from flowing into the pressurizing chamber 93 through the gap, and it becomes possible to prevent the air from flowing into the pressurizing chamber 93. The amount of the content liquid stored in 93 can be stabilized.

Since the support protrusion 50d is formed on at least one of the inner surface of the annular groove 50e and the inner peripheral surface of the annular projection 53e, the support protrusion 50d assumes that a load is applied to the inner surface of the annular groove 50e. In addition, even if a crack is generated, the crack does not reach the outer surface of the discharge pipe 50. Therefore, it is possible to prevent the content liquid of the pressurizing chamber 93 from leaking to the outside of the discharge pipe 50.

Here, when the content liquid contained in the container body 10 is, for example, cosmetics, detergents, chemicals, etc., it contains a large amount of liquids having high permeability to resin materials such as alcohols, surfactants, oils, and the like. In this case, the content liquid permeates the discharge pipe 50 and the discharge pipe 50 is liable to deteriorate. Therefore, the above-mentioned action and effect of suppressing the load applied to the discharge pipe 50 is remarkably achieved.

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 embodiment, all of the three or more support protrusions 50d are brought into contact with the annular projection 53e in the radial direction, but all the support protrusions 50d are not brought into contact with the annular projection 53e. May be good.
Further, as shown in FIG. 6, only a part of the three or more support protrusions 50d may be brought into contact with the annular projection 53e. Also in this liquid discharge container 2, between the outer peripheral surface of the lower end portion 53a of the inlet cylinder 53 and the inner peripheral surface of the main body portion 50a of the discharge pipe 50, and between the outer peripheral surface of the inner protruding portion 53b and the outer protruding portion. A radial gap is provided over the entire circumference on both sides of the inner peripheral surface of 50b. The radial sizes of these gaps are not the same over the entire circumference, and among the three or more support protrusions 50d, the support protrusions 50d that are in contact with the inner peripheral surface of the annular projection 53e are the support protrusions 50d. It is wide at the position in the circumferential direction where it is arranged, and narrow at the position in the circumferential direction facing this position in the radial direction.

The support protrusion 50d is not formed on both the inner surface of the annular groove 50e and the annular projection 53e, and at least a part of the inner surface of the annular groove 50e and the annular projection 53e are in radial contact with each other. Between the outer peripheral surface of the lower end 53a of the inlet cylinder 53 and the inner peripheral surface of the main body 50a of the discharge pipe 50, the outer peripheral surface of the inner protruding portion 53b, and the inner peripheral surface of the outer protruding portion 50b. A configuration may be adopted in which a radial gap is provided on both sides of the space.
Also in this configuration, the outer peripheral surface of the inlet cylinder 53 and the inner peripheral surface of the discharge pipe 50 are prevented from coming into contact with each other, and the load applied to the discharge pipe 50 can be suppressed.

In the above embodiment, the annular projection 53e is fitted in the annular seal portion 101, but the annular projection 53e is radially between the outer peripheral surface of the annular projection 53e and the inner peripheral surface of the annular seal portion 101. A gap may be provided.
In the above embodiment, the inner portions of the lower surface of the upper flange portion 53c and the upper surface of the lower flange portion 50c are in contact with each other, but there is a vertical gap between the inner portions. It may be provided.

In the above embodiment, the fixing tool 86 and the holding leg portion 68 are provided, respectively, but these may not be provided. Further, the conversion mechanism 75 may be provided between the rotation ring 40 and the plunger 60 and may convert the rotation operation of the rotation ring 40 into the ascending operation of the plunger 60, and is shown in the above embodiment. Not limited.
In the above embodiment, the isobaric valve 80 includes the first valve portion 81, the second valve portion 82, and the third valve portion 83, but the isobaric hole 27 is opened and closed and the outer peripheral surface of the plunger 60 is slid. The communication is not limited to this as long as the communication between the hydraulic relief passage 91 and the air inflow passage 92 and the interruption thereof are switched.

In addition, it is appropriately possible to replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

1, 2 Liquid discharge container 10 Container body 12 Container body mouth 20 Cylinder 20a Cylinder upper end 21a Suction port 29 Suction valve 40 Rotating ring 42 Relay member 46 Top plate 47 Spring (Abacus)
50 Discharge pipe 50a Main body 50b Outer protrusion 50c Lower flange 50d Support protrusion 50e Circular groove 51 Discharge valve 52 Outlet cylinder 52a Outer cylinder upper end 53 Inlet cylinder 53a Inlet cylinder lower end 53b Inner protrusion 53c Upper flange 53e Circular protrusion 54 Valve body 56 Discharge head 56a Discharge port 60 Plunger 75 Conversion mechanism 93 Pressurization chamber 101 Circular seal

Claims (5)

The main body of the container that contains the liquid and
A cylinder fixed to the container body with the suction port at the lower end arranged in the container body and the upper end protruding upward from the container body.
A rotating ring rotatably attached to the upper end of the cylinder,
A discharge pipe provided with a discharge valve at the top and a lower opening located inside the cylinder,
It is arranged so as to be movable up and down in the cylinder, and as it moves up and down, the inner peripheral surface of the cylinder and the outer peripheral surface of the discharge pipe slide liquid-tightly and are urged downward by the urging portion. With a tubular plunger,
A conversion mechanism provided between the rotary ring and the plunger to convert the rotational movement of the rotary ring with respect to the cylinder into an ascending motion of the plunger with respect to the cylinder and the discharge pipe.
A discharge head mounted on the discharge valve and formed with a discharge port for the content liquid,
A suction valve disposed at the suction port, which allows the content liquid in the container body to flow into the cylinder and prevents the content liquid in the cylinder from flowing out into the container body.
It is provided with a pressurizing chamber 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 inside of the container body through the suction valve is stored.
The conversion mechanism includes a relay member that supports the plunger so that it cannot rotate relative to the rotation ring and can move relative to the vertical direction.
The relay member includes an annular top plate portion in which the upper portion of the discharge pipe is inserted.
The discharge pipe has a main body portion extending downward from the inside of the top plate portion, an outer protruding portion extending upward from the upper end portion of the main body portion, and a radial outer side from the upper end portion of the outer protruding portion. With a lower flange that protrudes toward
The discharge valve is arranged so that the lower end thereof can move downward with respect to the inlet cylinder inserted into the main body of the discharge pipe and the inlet cylinder in an upwardly urged state, and the discharge head is attached to the upper end portion. A valve body that blocks communication between the outlet cylinder and the inside of the inlet cylinder, and communicates the inside of the inlet cylinder and the inside of the outlet cylinder when the outlet cylinder is moved downward with respect to the inlet cylinder. And, with
The inlet cylinder is inserted into the outer protrusion and has an inner protrusion whose upper end is located above the upper end of the outer protrusion and projects radially outward from the upper end of the inner protrusion. The lower surface is provided with an upper flange portion that is in contact with or close to the upper surface of the lower flange portion.
An annular seal portion extending continuously over the entire circumference is disposed at least in a part between the lower surface of the upper flange portion and the upper surface of the lower flange portion.
An annular protrusion inserted into the annular groove formed in the other is formed on either the lower surface of the upper flange portion or the upper surface of the lower flange portion.
With the inner surface of the annular groove and at least a part of each of the annular protrusions in contact with each other in the radial direction, the outer peripheral surface of the lower end portion of the inlet cylinder and the inner peripheral surface of the main body portion of the discharge pipe. , And both between the outer peripheral surface of the inner protrusion and the inner peripheral surface of the outer protrusion, a liquid discharge container provided with a radial gap over the entire circumference. The outer peripheral surface of the lower end of the inlet cylinder and the inner circumference of the main body of the discharge pipe in a state where the inner surface of the annular groove and at least one of the annular protrusions are in radial contact with the other. A support protrusion having a radial gap over the entire circumference is provided in the circumferential direction between the surface and between the outer peripheral surface of the inner protrusion and the inner peripheral surface of the outer protrusion. The liquid discharge container according to claim 1, wherein three or more are formed at equal intervals. The outer peripheral surface of the lower end of the inlet cylinder and the inner peripheral surface of the main body of the discharge pipe are close to each other, and the outer peripheral surface of the inner protruding portion and the inner peripheral surface of the outer protruding portion are close to each other. The liquid discharge container according to claim 1 or 2, which is in close proximity. The liquid discharge container according to any one of claims 1 to 3, wherein the annular protrusion is fitted in the annular seal portion. On the lower surface of the upper flange portion and the upper surface of the lower flange portion, the annular seal portion is disposed in a portion located radially outside the annular groove and the annular protrusion, and the annular groove, The liquid discharge container according to any one of claims 1 to 4, wherein the portions located inside the annular projection in the radial direction are in contact with each other.

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