Unit for upright and inverted inversion

Abstract

To enable content fluid in a container main body to be smoothly introduced into a cylinder part.SOLUTION: A unit for erection / inversion comprises: an erection-time introduction port 63a; an inversion-time introduction port 65a; a relay port 64c; a first switch valve 61; a second switch valve 62; and at least either of an evacuating concave part that when a discharger 10 is erected, makes the second switch valve enter and separates the second switch valve, in a direction crossing an opening direction of the erection-time introduction port, at the opposite side of an inversion-time valve seat 64e, with respect to a first passage through which content fluid flows from the erection-time introduction port toward the relay port and an evacuating concave part 69 that when the discharger is inverted, makes the first switch valve enter and separates the first switch valve, in a direction crossing an opening direction of the inversion-time introduction port, at the opposite side of an erection-time valve seat 64d, with respect to a second passage through which content fluid flows from the inversion-time introduction port toward the relay port.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] <()()()()()()4>The present invention relates to a unit for upright and inverted use.

Background Art

[0002] As a unit for upright and inverted use attached to the cylinder part of a dispenser, when the dispenser is upright, a forward inlet through which the content liquid in the container body can be introduced into the content liquid inlet of the cylinder part, and when the dispenser is inverted, an inverted inlet through which the content liquid in the container body can be introduced into the content liquid inlet, a relay port that can communicate with the content liquid inlet, the forward inlet, and the inverted inlet, and when the dispenser is upright, a first switching valve that abuts against the forward valve seat to block the communication between the inverted inlet and the relay port, and when the dispenser is inverted, a second switching valve that abuts against the inverted valve seat to block the communication between the forward inlet and the relay port are known. In this unit for upright and inverted use, when the dispenser is upright, the container body and the content liquid inlet of the cylinder part communicate through the forward inlet and the relay port, and when the dispenser is inverted, the container body and the content liquid inlet communicate through the inverted inlet and the relay port.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above unit for upright and inverted use, when the dispenser is upright and the content liquid in the container body is introduced into the content liquid inlet of the cylinder part, the second switching valve rides on the liquid flow of the content liquid and approaches the inverted valve seat, and the decompression in the cylinder part acts on the second switching valve through the relay port, so there is a possibility that the second switching valve is pressed against the inverted valve seat. On the other hand, when the dispenser is inverted, as the liquid contents inside the container body are introduced into the liquid inlet, the first switching valve moves towards the valve seat when upright, carried by the liquid flow, and the reduced pressure inside the cylinder is applied to the first switching valve through the relay port, which may cause the first switching valve to be pressed against the valve seat when upright. Therefore, there is a risk that the liquid contents inside the container may not be able to be smoothly introduced into the cylinder.

[0005] The present invention aims to provide an inverted / upright unit that can smoothly introduce the liquid contents inside the container body into the cylinder. [Means for solving the problem]

[0006] An inverted / upright unit according to one aspect of the present invention is an inverted / upright unit attached to the cylinder portion of a discharger, comprising: an upright inlet that allows the contents of the container body to be introduced into the contents inlet of the cylinder portion when the discharger is upright; an inverted inlet that allows the contents of the container body to be introduced into the contents inlet when the discharger is inverted; a relay port that can communicate with the contents inlet, the upright inlet, and the inverted inlet; a first switching valve that, when the discharger is upright, contacts the upright valve seat to block communication between the inverted inlet and the relay port; and a relay port that, when the discharger is inverted, contacts the inverted valve seat to block communication between the upright inlet and the relay port. The discharger includes a second switching valve that blocks communication with the joint, a retractable recess that, when the discharger is upright, allows the second switching valve to enter and separates the second switching valve from the first path through which the liquid contents flow from the upright inlet to the relay port, on the opposite side of the valve seat when the discharger is inverted and in a direction intersecting the opening direction of the upright inlet, and at least one of the retractable recesses that, when the discharger is inverted, allows the first switching valve to enter and separates the first switching valve from the second path through which the liquid contents flow from the inverted inlet to the relay port, on the opposite side of the valve seat when the discharger is inverted and in a direction intersecting the opening direction of the inverted inlet.

[0007] When the discharger is upright, the second switching valve is moved into a retracted recess that separates the second switching valve from the first path through which the liquid contents flow from the upright inlet to the intermediate port, on the opposite side of the valve seat when inverted and in a direction intersecting the opening direction of the upright inlet, and when the discharger is inverted, the first switching valve is moved into a retracted recess that separates the first switching valve from the second path through which the liquid contents flow from the inverted inlet to the intermediate port, on the opposite side of the valve seat when upright and in a direction intersecting the opening direction of the inverted inlet, Since both sides are equipped with a retractable recess, when the liquid contents in the container body are introduced into the liquid contents inlet of the cylinder section, it is possible to prevent at least one of the following: when the dispenser is upright, the liquid contents flowing through the first path come into contact with the second switching valve, causing the second switching valve to move towards the valve seat when inverted by the liquid flow of the liquid contents; and when the dispenser is inverted, the liquid contents flowing through the second path come into contact with the first switching valve, causing the first switching valve to move towards the valve seat when upright by the liquid flow of the liquid contents. As a result, when the liquid contents are introduced into the liquid contents inlet of the cylinder, it is possible to prevent at least one of the following: when the discharger is upright, the second switching valve is pressed against the valve seat when upright due to the pressure reduction inside the cylinder through the relay port; and when the discharger is inverted, the first switching valve is pressed against the valve seat when upright due to the pressure reduction inside the cylinder through the relay port. This allows the liquid contents in the container body to be smoothly introduced into the cylinder.

[0008] The discharger is provided with a flow path forming member having a common flow path that connects the liquid inlet and the relay port, the flow path forming member having a top cylindrical portion extending in the vertical direction, the inverted inlet and the relay port communicating through the inside of the top cylindrical portion, the inverted inlet is formed in the portion of the peripheral wall of the top cylindrical portion located below the upper end, and the portion on the inside of the top cylindrical portion located above the inverted inlet may be the retraction recess into which the first switching valve enters when the discharger is inverted.

[0009] A flow path forming member, which has a common flow path connecting the liquid inlet and the relay port, is provided with a top-shaped cylindrical portion, and the portion located above the inlet when the dispenser is inverted is a retractable recess into which the first switching valve enters when the dispenser is inverted. Thus, a unit for both upright and inverted use is obtained that can smoothly introduce the liquid contents of the container body into the cylinder portion while keeping the structure from becoming too complex.

[0010] The discharger may be provided with at least one of the following restraining parts: a restraining part that prevents the second switching valve from entering the first path when the discharger is upright, and a restraining part that prevents the first switching valve from entering the second path when the discharger is inverted.

[0011] The discharger is equipped with at least one of the following restraining parts: a restraining part that prevents the second switching valve from entering the first path when the discharger is upright, and a restraining part that prevents the first switching valve from entering the second path when the discharger is inverted. Therefore, when the liquid contents in the container body are introduced into the liquid contents inlet, it is possible to prevent at least one of the following: when the discharger is upright, the liquid contents flowing through the first path come into contact with the second switching valve, causing the second switching valve to move towards the valve seat when inverted by the liquid flow of the liquid contents; and when the discharger is inverted, the liquid contents flowing through the second path come into contact with the first switching valve, causing the first switching valve to move towards the valve seat when upright by the liquid flow of the liquid contents. This makes it possible to prevent at least one of the following when the liquid contents are introduced into the liquid contents inlet: when the dispenser is upright, the second switching valve is pressed against the valve seat when upright due to the reduced pressure inside the cylinder section applied through the relay port; and when the dispenser is inverted, the first switching valve is pressed against the valve seat when upright due to the reduced pressure inside the cylinder section applied through the relay port. This allows the liquid contents inside the container body to be smoothly introduced into the cylinder section.

[0012] At least one of the upright inlet and the inverted inlet may be provided with an inlet projection that extends along the path of the liquid contents from the inlet toward the relay port and has an inlet surface that faces inward toward the inlet along the opening direction of the inlet.

[0013] Since an inlet projection is provided at least one of the inlets, either the upright inlet or the inverted inlet, when the liquid contents pass through this inlet, the liquid contents flow along the inlet surface and are guided to the relay port, thereby preventing them from flowing into the retracted recess. The liquid flow of the liquid contents that has passed through this inlet and flowed into the retracted recess prevents the switching valve in the retracted recess from floating towards the relay port. As a result, when the liquid contents are introduced into the liquid contents inlet of the cylinder section, it is possible to reliably prevent at least one of the following: when the discharger is upright, the second switching valve is pressed against the valve seat in the inverted position due to the pressure reduction in the cylinder section applied through the relay port, and when the discharger is inverted, the first switching valve is pressed against the valve seat in the upright position due to the pressure reduction in the cylinder section applied through the relay port.

[0014] The tip edge of the introduction projection facing the intermediate port side along the path extends in a direction away from the intermediate port as it moves outward from the inlet along the opening direction of the upright or inverted inlet where the introduction projection is provided, in a longitudinal cross-sectional view, the inclination angle of the tip edge of the introduction projection is 15° or more and 40° or less, the introduction projection is located on the outside of the inlet along the opening direction of the upright or inverted inlet where the introduction projection is provided, more than the surface facing the surface on which the introduction projection is provided, in a longitudinal cross-sectional view, the end of the opposing surface on the introduction projection side along the opening direction of the upright or inverted inlet where the introduction projection is provided may be located on the extension line of the tip edge of the introduction projection.

[0015] In this case, the introduction protrusion can be easily formed using a so-called wire cutting method without complicating the structure of the molding die. [Effects of the Invention]

[0016] According to the above embodiment of the present invention, the liquid contents inside the container body can be smoothly introduced into the cylinder portion. [Brief explanation of the drawing]

[0017] [Figure 1] A longitudinal sectional view of a dispenser having a normal / inverted unit shown as a first embodiment according to the present invention. [Figure 2] An enlarged view of the normal / inverted unit of FIG. 1. [Figure 3] A sectional view taken along the arrow III-III of FIG. 2. [Figure 4] A view showing the inverted state of the dispenser in FIG. 2. [Figure 5A] An enlarged view of the normal / inverted unit of the second embodiment according to the present invention. [Figure 5B] A view showing the inverted state of the dispenser in FIG. 5A. <​​​​​​​​​​​​​​​​​​​​​​​​The cylinder portion 21, the piston portion 22, and the first biasing member 23 are each formed in a cylindrical shape and are arranged coaxially with the common shaft. Hereinafter, the common axis will be referred to as axis O, the side with the discharge head 12 along axis O will be referred to as the upper side, the side with the inverted / inverted unit 1 along axis O will be referred to as the lower side, and the direction along axis O will be referred to as the up / down direction. The direction that intersects axis O when viewed from the up / down direction will be referred to as the radial direction, and the direction that circles around axis O when viewed from the up / down direction will be referred to as the circumferential direction.

[0021] The cylinder portion 21 is inserted into the mouth W1 of the container body W, which contains the liquid. The cylinder portion 21 has a flange portion 21a that protrudes radially outward. The flange portion 21a is placed on the upper opening edge of the mouth W1 via a packing. The flange portion 21a has a first connecting cylindrical portion 21b that protrudes upward. The first connecting cylindrical portion 21b is arranged coaxially with axis O.

[0022] The piston portion 22 comprises a topped cylindrical sliding portion 22a having an annular top wall, and a cylindrical portion 22b extending upward from the inner peripheral edge of the top wall of the sliding portion 22a. The sliding portion 22a is fitted into the cylinder portion 21 so as to be vertically slidable. The cylindrical portion 22b is inserted into the first connecting cylindrical portion 21b, and the upper end of the cylindrical portion 22b protrudes upward from the first connecting cylindrical portion 21b.

[0023] The upper end of the first biasing member 23 is inserted into the sliding portion 22a and abuts against the lower surface of the top wall of the sliding portion 22a. The lower end of the first biasing member 23 abuts against an upward-facing step formed on the inner circumferential surface of the cylinder portion 21.

[0024] The lower valve body 24 is, for example, a ball valve and is provided inside the lower end of the cylinder portion 21. A valve seat portion 21e is formed on the inner circumferential surface of the lower end of the cylinder portion 21, projecting radially inward and tapering in diameter as it approaches the bottom. The lower end opening of the valve seat portion 21e is a liquid inlet 21f through which the liquid contents of the container body W are introduced into the cylinder portion 21. The lower valve body 24 is mounted on the upper surface of the valve seat portion 21e so as to be able to move away from it in an upward direction. The lower valve body 24 is a check valve that blocks communication between the container body W and the cylinder portion 21 when the cylinder portion 21 is pressurized, while allowing communication between the container body W and the cylinder portion 21 when the cylinder portion 21 is depressurized.

[0025] The mounting cap 14 is attached to the opening W1. The mounting cap 14 is formed in a topped cylindrical shape with an annular top wall, and the first connecting cylindrical portion 21b is inserted inside the top wall. The flange portion 21a is sandwiched vertically and fixed between the lower surface of the top wall and the upper opening edge of the opening W1.

[0026] The pressing member 13 comprises a support portion 25 and a lever portion 26. The support portion 25 comprises a top-shaped second connecting cylindrical portion 25a fitted onto the first connecting cylindrical portion 21b, and a projection portion 25b projecting upward from the second connecting cylindrical portion 25a. The top wall of the second connecting cylindrical portion 25a is formed in an annular shape, and the cylindrical portion 22b of the piston portion 22 is inserted inside it, with the upper end of the cylindrical portion 22b projecting upward from the second connecting cylindrical portion 25a. The projection portion 25b is radially away from the axis O. Hereinafter, in the radial direction, the side where the protrusion 25b is away from the axis O will be referred to as the rear side, and the opposite side will be referred to as the front side. The rear of the lever portion 26 extends forward from the upper end of the projection portion 25b, straddling the axis O in the front-rear direction, while the front of the lever portion 26 extends downward from the front end of the rear of the lever portion 26. The lever portion 26 is rotatable in the vertical direction around the upper end of the projection portion 25b. The lever portion 26 has an engaging portion 26a that engages with the discharge head 12. When the lever portion 26 rotates downward around the upper end of the projection portion 25b, the engaging portion 26a pushes down the discharge head 12.

[0027] A restricting member 31 is attached to the support portion 25, which is movable between a restricting position that restricts the downward rotation of the lever portion 26 and an allowable position that permits the downward rotation of the lever portion 26.

[0028] The discharge head 12 comprises a main body 27, a pressure accumulator valve 28, and a second biasing member 29. The main body 27 comprises a horizontal cylinder 12a extending radially and a vertical cylinder 12b extending downward from the horizontal cylinder 12a. The horizontal cylinder 12a extends in the front-rear direction and passes through the front of the lever portion 26 in the front-rear direction. A discharge hole 12c opening forward is formed at the front end of the horizontal cylinder 12a. The vertical cylinder 12b extends downward from the rear of the horizontal cylinder 12a. The vertical cylinder 12b is fitted onto the cylindrical portion 22b of the piston portion 22. The pressure accumulator valve 28 is located inside the horizontal cylinder 12a and blocks communication between the vertical cylinder 12b and the discharge hole 12c. The pressure accumulator valve 28 is located inside the rear of the horizontal cylinder 12a so as to be movable back and forth and is biased forward by the second biasing member 29. When the internal pressure at the rear of the horizontal cylinder 12a exceeds a predetermined value, the pressure accumulator valve 28 moves backward against the biasing force of the second biasing member 29, thereby opening communication between the vertical cylinder 12b and the discharge hole 12c, and the liquid contents are discharged from the discharge hole 12c.

[0029] Next, we will explain the inverted / upright unit 1.

[0030] The forward / inverted unit 1 is attached to the cylinder section 21. The forward / inverted unit 1 comprises a first switching valve 61, a second switching valve 62, an outer cylinder member 63, an inner cylinder member 64, and a flow path forming member 65. The outer cylinder member 63 and the inner cylinder member 64 are arranged coaxially with axis O.

[0031] The flow path forming member 65 has an inverted inlet 65a that allows the liquid contents inside the container body W to be introduced into the liquid contents inlet 21f of the cylinder portion 21 when the discharger 10 is inverted. The flow path forming member 65 is formed in a bottomed cylindrical shape and is fitted onto the lower end of the cylinder portion 21. A seal cylinder portion 65c that protrudes downward is formed on the outer peripheral edge of the bottom wall portion of the flow path forming member 65.

[0032] The outer cylinder member 63 is attached to the cylinder portion 21 via a flow path forming member 65. The outer cylinder member 63 has an upright inlet 63a that allows the liquid contents of the container body W to be introduced into the liquid contents inlet 21f of the cylinder portion 21 when the discharger 10 is upright, and an intake hole 63c that allows the liquid contents of the container body W to be introduced into the inverted inlet 65a when the discharger 10 is inverted. The inlet 63a and intake hole 63c in the upright position open into the container body W. The intake hole 63c and the inlet 65a in the inverted position are located above the inlet 63a in the upright position of the discharger 10.

[0033] The outer cylindrical member 63 is formed in a multi-stage cylindrical shape that gradually decreases in diameter as it goes downwards. The outer cylinder member 63 is composed of a first outer cylinder portion 71, a second outer cylinder portion 72, a third outer cylinder portion 73, and a fourth outer cylinder portion 74, arranged in this order from top to bottom.

[0034] The first outer cylinder portion 71 surrounds the outer circumferential surface of the flow path forming member 65 with a radial gap. An annular gap extending in the circumferential direction is provided between the outer circumferential surface of the flow path forming member 65 and the inner circumferential surface of the first outer cylinder portion 71. The inverted inlet 65a opens into this gap. The upper end opening of the first outer cylinder portion 71 is the intake hole 63c. The seal cylinder portion 65c of the flow path forming member 65 is tightly fitted inside the lower end of the first outer cylinder portion 71. Furthermore, the first outer cylinder portion 71 may have only the lower end portion fitted onto the sealing cylinder portion 65c, and may not have a portion located above the lower end portion or an intake hole 63c, with an inlet 65a opening into the container body W when inverted.

[0035] A relay port 64c for the inner cylinder member 64, which will be described later, is open inside the second outer cylinder portion 72. The lower end of the inner cylinder member 64 is tightly fitted into the upper end of the third outer cylinder portion 73. The lower end opening of the third outer cylinder portion 73 is an upright inlet 63a that opens in the vertical direction. A second switching valve 62 is movably housed within the third outer cylinder portion 73. The second switching valve 62 is, for example, a ball valve. The upper end of the suction cylinder 67 is fitted into the fourth outer cylinder portion 74. The lower end of the suction cylinder 67 is located at the bottom of the container body W. The inlet 63a communicates with the inside of the container body W when upright through the suction cylinder 67. Alternatively, the fourth outer cylinder portion 74 may be omitted, and the upper end of the suction cylinder 67 may be connected to, for example, the third outer cylinder portion 73.

[0036] The inner cylinder member 64 has a lower end opening 64a that communicates with the inlet 63a when upright, an upper end opening 64b that communicates with the inlet 65a when inverted, and a relay port 64c that can communicate with the liquid content inlet 21f, the inlet 63a when upright, and the inlet 65a when inverted. The relay port 64c communicates with the liquid content inlet 21f, the inlet 63a when upright, and the inlet 65a separately through different flow paths.

[0037] The inner cylinder member 64 is formed in a gourd shape, with its middle section in the vertical direction narrowed radially inward. The upper end of the inner cylinder member 64 is connected to the bottom wall of the flow path forming member 65. The inner cylinder member 64 is composed of a first inner cylinder section 76, a second inner cylinder section 77, and a third inner cylinder section 78, arranged in that order from top to bottom.

[0038] The upper end opening of the first inner cylinder portion 76 is the upper end opening 64b of the inner cylinder member 64. An upright valve seat 64d is formed on the lower inner circumferential surface of the first inner cylinder portion 76, extending radially inward as it goes downward. The first switching valve 61 enters the second path L2, which will be described later, when the discharger 10 is upright, and contacts the valve seat 64d when upright, blocking communication between the inlet 65a and the relay port 64c when inverted. The first switching valve 61 is positioned above the valve seat 64d when upright. The first switching valve 61 is, for example, a ball valve and is in contact with the valve seat 64d when upright so as to be able to move away from it in an upward direction.

[0039] The second inner cylinder portion 77 constitutes the constricted portion of the inner cylinder member 64. Multiple relay openings 64c that penetrate radially are formed in the second inner cylinder portion 77 at intervals in the circumferential direction.

[0040] The lower end opening of the third inner cylinder portion 78 is the lower end opening 64a of the inner cylinder member 64. The lower end of the third inner cylinder portion 78 is fitted into the upper end of the third outer cylinder portion 73 of the outer cylinder member 63. An inverted valve seat 64e is formed on the upper inner circumferential surface of the third inner cylinder portion 78, which extends radially inward as it goes upward. The second switching valve 62 is positioned below the inverted valve seat 64e. The second switching valve 62 is arranged so as to be able to contact the inverted valve seat 64e from below. When the discharger 10 is inverted, the second switching valve 62 enters the first path L1, which will be described later, and contacts the inverted valve seat 64e, blocking communication between the upright inlet 63a and the relay port 64c. The valve seat 64e in the inverted position has an anti-sticking portion 64f formed therein to prevent the second switching valve 62 from sticking to it. Examples of the anti-sticking portion 64f include grooves or ribs radially arranged on the valve seat 64e in the inverted position, but any irregularities that can prevent the second switching valve 62 from sticking to it may be changed as appropriate. The anti-sticking portion 64f does not have to be formed on the valve seat 64e in the inverted position. In this case, the inner cylinder member 64 may be formed in a vertically symmetrical shape, and when the discharger 10 is inverted, the sealing performance between the second switching valve 62 and the valve seat 64e in the inverted position is improved, and communication between the inlet 63a in the upright position and the intermediate port 64c can be reliably blocked.

[0041] A plug portion (topped cylindrical portion) 65b and a common channel 68 are formed on the bottom wall portion of the channel forming member 65.

[0042] The plug portion 65b is provided radially inward from the sealing cylinder portion 65c. The plug portion 65b protrudes vertically from both sides of the bottom wall portion of the flow path forming member 65, and the portion of the plug portion 65b that protrudes downward from the bottom wall portion of the flow path forming member 65 is fitted into the upper end opening 64b of the inner cylinder member 64. The plug portion 65b is formed in a top-ended cylindrical shape that extends vertically. An inverted inlet 65a is formed in the portion of the peripheral wall of the plug portion 65b that is located below the upper end. The inverted inlet 65a extends radially, penetrates the bottom wall portion of the flow path forming member 65 radially, and opens to the inner circumferential surface of the plug portion 65b and the outer circumferential surface of the flow path forming member 65, communicating with the intake hole 63c.

[0043] The common channel 68 connects the liquid inlet 21f and the relay port 64c of the cylinder portion 21. The common channel 68 penetrates vertically through the portion of the bottom wall of the channel forming member 65 located between the plug portion 65b and the seal cylinder portion 65c, and opens into the channel forming member 65. The common channel 68 opens toward the upper end opening edge of the first inner cylinder portion 76. Here, the upper end of the first inner cylinder portion 76 is inserted into the seal cylinder portion 65c. An annular gap extending in the circumferential direction is provided between the inner circumferential surface of the seal cylinder portion 65c and the outer circumferential surface of the first inner cylinder portion 76. The lower surface of the bottom wall portion of the flow path forming member 65 is separated upward from the upper end opening edge of the first inner cylinder portion 76, and the annular gap between the inner circumferential surface of the seal cylinder portion 65c and the outer circumferential surface of the first inner cylinder portion 76 communicates with the common flow path 68.

[0044] In this embodiment, the discharger 10 is equipped with at least one of the following: a restraining part 75 that prevents the second switching valve 62 from entering the first path L1 through which the liquid contents flow from the upright inlet 63a to the intermediate port 64c when the discharger 10 is upright, and a restraining part that prevents the first switching valve 61 from entering the second path L2 through which the liquid contents flow from the inverted inlet 65a to the intermediate port 64c when the discharger 10 is inverted. The latter restraining portion for the first switching valve 61 is provided on the plug portion 65b.

[0045] In the illustrated example, a top-shaped cylindrical covering portion 51 is formed on the inner surface of the outer cylinder member 63, projecting upward and covering the upright inlet 63a from above. A lateral opening 51a is formed in the peripheral wall of the covering portion 51, opening radially and connecting the upright inlet 63a to the inside of the third outer cylinder portion 73. The restraining portion 75 for the second switching valve 62, as described above, projects upward from the top wall of the covering portion 51.

[0046] The amount of the restraining portion 75 protruding upward from the top wall of the covering portion 51 is equal to the outer diameter of the second switching valve 62. As shown in Figure 3, when viewed from above, the restraining portion 75 is formed in a plate shape with its surface facing the side of the radial direction where the lateral opening 51a is open. The restraining portion 75 is located at the end of the top wall of the covering portion 51 on the side of the radial direction where the lateral opening 51a is open. As shown in Figure 2, in a vertical cross-sectional view along the vertical direction, the surface of the restraining portion 75 is located on the same line as the opening surface of the lateral opening 51a. Because the restraining portion 75 is formed in a plate shape as described above, it is possible to avoid space constraints compared to, for example, a configuration formed in a cylindrical shape that extends continuously around the entire circumference.

[0047] The distance between the portion of the inner circumferential surface of the third outer cylinder portion 73 that faces radially from the back surface of the restraining portion 75 and the back surface of the restraining portion 75 is greater than the outer diameter of the second switching valve 62. The distance between the portion of the inner circumferential surface of the third outer cylinder portion 73 that faces radially from the outer circumferential surface of the peripheral wall of the covering portion 51 and the outer circumferential surface of the peripheral wall of the covering portion 51 is smaller than the outer diameter of the second switching valve 62. The second switching valve 62 is located in the space enclosed by the back surface of the restraining portion 75, the upper surface of the top wall of the covering portion 51, and the inner circumferential surface of the third outer cylinder portion 73 when the discharger 10 is upright.

[0048] The distance between the portion of the inner circumferential surface of the third outer cylinder portion 73 that faces the surface of the lateral opening 51a and the restraining portion 75 in the radial direction, and the surface of the lateral opening 51a and the restraining portion 75, is greater than the outer diameter of the second switching valve 62. Of the inner circumferential surface of the third outer cylinder portion 73, the portion radially facing the surface of the lateral opening 51a and the restraining portion 75, and the portion between the lateral opening 51a and the surface of the restraining portion 75, form the inlet portion of the first path L1 through which the liquid contents flow from the inlet 63a to the relay port 64c when the discharger 10 is upright. Inside the third outer cylinder portion 73, a guide portion 52 is provided to guide the second switching valve 62, which attempts to enter the inlet portion when the discharger 10 is upright, to the back side of the restraining portion 75.

[0049] The guide portion 52 protrudes radially inward from the portion of the inner circumferential surface of the third outer cylinder portion 73 that is radially opposite to the lateral opening 51a and the surface of the restraining portion 75. The guide portion 52 extends upward from the lower end of the third outer cylinder portion 73. The upper end of the guide portion 52 is located above the upper end of the restraining portion 75 and abuts against the lower end of the inner cylinder member 64 in the vertical direction. The upper end of the guide portion 52 extends radially outward as it extends upward. The guide portion 52 is formed in a plate shape with its front and back surfaces facing the circumferential direction. As shown in Figure 3, one guide portion 52 is provided on each side of the inner circumferential surface of the third outer cylinder portion 73, on both sides of the portion of the lateral opening 51a and the restraining portion 75 that is radially opposite to the central part of the circumferential direction.

[0050] In this embodiment, when the discharger 10 is upright, there is a retraction recess that moves the second switching valve 62 inward, away from the first path L1 on the opposite side of the valve seat 64e when upright and in a direction intersecting the opening direction of the inlet 63a when upright, and at least one of these is provided. When the discharger 10 is inverted, there is a retraction recess 69 that moves the first switching valve 61 inward, away from the second path L2 on the opposite side of the valve seat 64d when upright and in a direction intersecting the opening direction of the inlet 65a when upright.

[0051] Furthermore, as the retractable recess for the former relative to the second switching valve 62, for example, a configuration can be adopted in which the gap between the portion of the inner circumferential surface of the third outer cylinder portion 73 that faces radially with the outer circumferential surface of the peripheral wall of the covering portion 51 and the outer circumferential surface of the peripheral wall of the covering portion 51 is made larger than the outer diameter of the second switching valve 62, and this gap portion is recessed below the inlet 63a when upright.

[0052] In the illustrated example, the portion of the plug portion 65b located above the inverted inlet 65a is designated as a retractable recess 69 into which the first switching valve 61 enters when the discharger 10 is inverted. As shown in Figure 4, the first switching valve 61, having entered the retractable recess 69, moves away from the second path L2 in an up-and-down direction, that is, in a direction intersecting the opening direction (radial direction) of the inverted inlet 65a from the second path L2.

[0053] Next, the operation of the discharger 10 will be explained.

[0054] When the lever portion 26 is rotated downward around the upper end of the protruding portion 25b, and the discharge head 12 is pushed down, the piston portion 22 is pushed down together with the discharge head 12 against the biasing force of the first biasing member 23. At this time, the sliding portion 22a of the piston portion 22 slides downward along the inner circumferential surface of the cylinder portion 21, and the internal volume of the cylinder portion 21 decreases, thereby pressurizing the inside of the cylinder portion 21. Due to the increase in internal pressure of the cylinder portion 21, the lower valve body 24 inside the cylinder portion 21 comes into close contact with the valve seat portion 21e, blocking communication between the inside of the cylinder portion 21 and the inside of the container body W. As a result, the pressurized liquid inside the cylinder portion 21 rises through the cylindrical portion 22b of the piston portion 22 and flows into the rear part of the horizontal cylinder 12a through the vertical cylinder 12b of the discharge head 12, thereby pressurizing the rear part of the horizontal cylinder 12a. Then, when the internal pressure at the rear of the horizontal cylinder 12a exceeds a predetermined value, the pressure accumulation valve 28 moves backward against the biasing force of the second biasing member 29, thereby connecting the inside of the vertical cylinder 12b with the discharge hole 12c, and the liquid contents are discharged from the discharge hole 12c. Subsequently, when the downward pressure on the discharge head 12 is released, the piston portion 22 rises together with the discharge head 12 due to the upward biasing force of the first biasing member 23.

[0055] As the piston portion 22 slides upward along the inner circumferential surface of the cylinder portion 21, the space enclosed by the inner circumferential surface of the cylinder portion 21 and the inner circumferential surface of the piston portion 22 increases, and the pressure inside the cylinder portion 21 is reduced. Due to the decrease in internal pressure of the cylinder portion 21, the lower valve body 24 moves upward away from the upper surface of the valve seat portion 21e, the liquid inlet 21f opens, and the main flow path from the liquid inlet 21f to the relay port 64c becomes depressurized.

[0056] This main flow path includes the inside of the flow path forming member 65, the common flow path 68, the gap between the lower surface of the bottom wall portion of the flow path forming member 65 and the upper end opening edge of the first inner cylinder portion 76, the gap between the inner circumferential surface of the seal cylinder portion 65c and the outer circumferential surface of the first inner cylinder portion 76, the gap between the inner circumferential surface of the second outer cylinder portion 72 and the outer circumferential surface of the first inner cylinder portion 76, and the gap between the inner circumferential surface of the second outer cylinder portion 72 and the outer circumferential surface of the second inner cylinder portion 77.

[0057] When the main flow path is under reduced pressure, the first switching valve 61 is in close contact with the valve seat 64d when the discharger 10 is upright, and communication between the inlet 65a and the intermediate port 64c when inverted is blocked. As a result, the third inner cylinder 78 and the third outer cylinder 73 are depressurized through the intermediate port 64c and the second inner cylinder 77. Consequently, the upright flow path, which goes from the liquid inlet 21f through the main flow path, intermediate port 64c, the second inner cylinder 77, the third inner cylinder 78, the third outer cylinder 73, the inlet 63a when upright, and the suction cylinder 67 to the container body W, is under reduced pressure, and the liquid inside the container body W is drawn up into the cylinder 21.

[0058] In this case, the second switching valve 62 is separated from the first path L1 of the liquid contents flowing from the inlet 63a to the intermediate port 64c when upright by a restraining part 75, thereby preventing the liquid contents flowing through the first path L1 from coming into contact with the second switching valve 62.

[0059] On the other hand, when the discharger 10 is inverted, as shown in Figure 4, the first switching valve 61 moves away from the valve seat 64d when upright due to its own weight, and the inverted inlet 65a and the intermediate port 64c communicate with each other, while the second switching valve 62 moves in close contact with the valve seat 64e when inverted due to its own weight, blocking communication between the inverted inlet 63a and the intermediate port 64c. In this state, when the discharge head 12 returns to its original position after the contents liquid is discharged, the lower valve body 24 moves away from the valve seat 21e, as described above for the discharger 10 when upright, and the contents liquid inlet 21f opens. As a result, the main flow path from the contents liquid inlet 21f to the intermediate port 64c becomes depressurized, and the inverted flow path from the intermediate port 64c through the inverted inlet 65a to the intake hole 63c also becomes depressurized.

[0060] This inverted flow path includes the inside of the second inner cylinder portion 77, the inside of the first inner cylinder portion 76, the inside of the plug portion 65b, the inverted inlet 65a, and the gap between the outer circumferential surface of the flow path forming member 65 and the inner circumferential surface of the first outer cylinder portion 71. When the inverted flow path is in a depressurized state, the liquid contents inside the container body W are introduced into the liquid contents inlet 21f through the intake hole 63c, the inverted flow path, the relay port 64c, and the main flow path when the discharger 10 is inverted.

[0061] When the discharger 10 is inverted, the first switching valve 61 enters the plug portion 65b, reaches the retracted recess 69 within the plug portion 65b, and contacts the top wall of the plug portion 65b. At this time, the first switching valve 61 is separated vertically from the inlet 65a when inverted. As a result, the first switching valve 61 is separated vertically from the second path L2 of the liquid contents flowing from the inlet 65a to the relay port 64c when inverted, and contact between the liquid contents flowing in the second path L2 and the first switching valve 61 is suppressed.

[0062] As described above, according to the inverted / upright unit 1 of this embodiment, when the discharger 10 is upright, the second switching valve 62 is moved in, and a retracted recess is provided that separates the second switching valve 62 from the first path L1 on the opposite side of the valve seat 64e when upright and in a direction intersecting the opening direction of the inlet 63a when upright. When the discharger 10 is inverted, the first switching valve 61 is moved in, and a retracted recess 69 is provided that separates the first switching valve 61 from the second path L2 on the opposite side of the valve seat 64d when upright and in a direction intersecting the opening direction of the inlet 65a when upright. Even if one of the retractable recesses is not present, when the liquid contents in the container body W are introduced into the liquid contents inlet 21f, it is possible to prevent at least one of the following: when the discharger 10 is upright, the liquid contents flowing through the first path L1 come into contact with the second switching valve 62, causing the second switching valve 62 to move towards the inverted valve seat 64e by riding on the liquid flow of the liquid contents; and when the discharger 10 is inverted, the liquid contents flowing through the second path L2 come into contact with the first switching valve 61, causing the first switching valve 61 to move towards the upright valve seat 64d by riding on the liquid flow of the liquid contents.

[0063] As a result, when the liquid contents are introduced into the liquid contents inlet 21f, it is possible to prevent at least one of the following: when the discharger 10 is upright, the second switching valve 62 is pressed against the valve seat 64e when upright due to the pressure reduction in the cylinder section 21 applied through the relay port 64c; and when the discharger 10 is upright, the first switching valve 61 is pressed against the valve seat 64d when upright due to the pressure reduction in the cylinder section 21 applied through the relay port 64c. This makes it possible to smoothly introduce the liquid contents in the container body W into the cylinder section 21.

[0064] A flow path forming member 65, which has a common flow path 68 connecting the liquid inlet 21f and the relay port 64c, is equipped with a stopper portion (top cylindrical portion) 65b, and the portion located above the inverted inlet 65a on the inside of the stopper portion 65b is a retractable recess 69 into which the first switching valve 61 enters when the discharger 10 is inverted. Thus, a forward and inverted unit 1 is obtained that can smoothly introduce the liquid contents inside the container body W into the cylinder portion 21 while keeping the structure from becoming too complex.

[0065] Since the discharger 10 is equipped with at least one of the following restraining parts: a restraining part 75 that prevents the second switching valve 62 from entering the first path L1 when the discharger 10 is upright, and a restraining part that prevents the first switching valve 61 from entering the second path L2 when the discharger 10 is inverted, it is possible to prevent at least one of the following when the liquid contents in the container body W are introduced into the liquid contents inlet 21f: when the discharger 10 is upright, the liquid contents flowing through the first path L1 come into contact with the second switching valve 62, causing the second switching valve 62 to move towards the inverted valve seat 64e by riding on the liquid flow of the liquid contents; and when the discharger 10 is inverted, the liquid contents flowing through the second path L2 come into contact with the first switching valve 61, causing the first switching valve 61 to move towards the upright valve seat 64d by riding on the liquid flow of the liquid contents.

[0066] As a result, when the liquid contents are introduced into the liquid contents inlet 21f, it is possible to prevent at least one of the following: when the discharger 10 is upright, the second switching valve 62 is pressed against the valve seat 64e when upright due to the pressure reduction in the cylinder section 21 applied through the relay port 64c; and when the discharger 10 is upright, the first switching valve 61 is pressed against the valve seat 64d when upright due to the pressure reduction in the cylinder section 21 applied through the relay port 64c. This makes it possible to smoothly introduce the liquid contents in the container body W into the cylinder section 21.

[0067] A lateral opening 51a is formed in the peripheral wall of the covering portion 51, which connects the inlet 63a when upright with the inside of the outer cylinder member 63. Since the restraining portion 75 protrudes upward from the top wall of the covering portion 51, when the discharger 10 is upright, the second switching valve 62 can be positioned in the space enclosed by the back surface of the restraining portion 75, the upper surface of the top wall of the covering portion 51, and the inner peripheral surface of the outer cylinder member 63, thereby reliably preventing the second switching valve 62 from entering the first path L1.

[0068] A guide portion 52 is provided inside the outer cylinder member 63 to guide the second switching valve 62, which would otherwise attempt to enter the inlet portion of the first path L1 when the discharger 10 is upright, to the back side of the restraining portion 75. This ensures that the second switching valve 62 is reliably prevented from entering the first path L1.

[0069] Next, a forward and inverted unit 2 according to a second embodiment of the present invention will be described with reference to Figures 5A and 5B. In this second embodiment, the same reference numerals are used for parts that are the same as those in the first embodiment, and their descriptions are omitted. Only the differences will be described.

[0070] At least one of the inlet ports, the upright inlet 63a and the inverted inlet 65a, is provided with an inlet projection 53 that extends along the path of the liquid contents from the inlet toward the relay port 64c and has an inlet surface 53b that faces inward towards the inlet along the opening direction of the inlet. The lower end edge (tip edge) 53a of the introduction projection 53, facing the intermediate port 64c side along the path, extends in a direction away from the intermediate port 64c as it moves outward from the inlet 64c along the opening direction of the upright inlet 63a or inverted inlet 65a where the introduction projection 53 is provided, and in a vertical cross-sectional view along the opening direction, the inclination angle of the lower end edge 53a of the introduction projection 53 is 15° or more and 40° or less, and the introduction projection 53 is this introduction projection In the upright inlet 63a or inverted inlet 65a provided with the introduction projection 53, the introduction projection 53 is located on the outside of the inlet along the opening direction, relative to the surface facing the surface facing the surface facing the surface facing the surface facing the opening direction, and in a vertical cross-sectional view along the opening direction, the end of the opposing surface in the upright inlet 63a or inverted inlet 65a provided with the introduction projection 53, on the side facing the introduction projection 53 along the opening direction, is located on the extension of the lower edge 53a of the introduction projection 53.

[0071] In the illustrated example, a retractable recess 69 is provided for the first switching valve 61, and the introduction projection 53 is provided on the radially extending inverted inlet 65a. The introduction projection 53 protrudes downward from the portion located at the upper end of the radial inner end of the inverted inlet 65a on the inner surface of the inverted inlet 65a that faces downward. The introduction surface 53b extends along the second path L2 and faces radially outward. The introduction surface 53b extends radially inward as it goes downward. Of the introduction projection 53, the radially inward facing inner surface extends straight in the vertical direction and is connected to the inner surface of the retractable recess 69 without any step in the vertical direction. The lower end edge 53a of the introduction projection 53 extends upward as it goes radially inward. In a vertical cross-sectional view along the vertical direction and along the opening direction of the inverted inlet 65a, the inclination angle of the lower edge 53a of the introduction projection 53 with respect to the horizontal direction perpendicular to the axis O is, for example, 15° to 40°, preferably 25° to 35° (30° in the illustrated example). The introduction projection 53 is located radially inward from the lower end (opposite surface) on the inner surface of the inverted inlet 65a. The lower edge 53a of the introduction projection 53 is located above the lower end on the inner surface of the inverted inlet 65a. In a vertical cross-sectional view along the vertical direction and along the opening direction of the inverted inlet 65a, the radial inner end of the lower end (the end on the introduction projection 53 side along the opening direction) of the inner surface of the inverted inlet 65a is located on the extension of the lower edge 53a of the introduction projection 53. Of the peripheral wall of the plug portion 65b, the portion located directly above the inverted inlet 65a protrudes radially inward from the portion located directly below the inverted inlet 65a, and the radial inner end of the inverted inlet 65a is open downward toward the intermediate port 64c.

[0072] As described above, in the inverted unit 2 of this embodiment, since the inverted inlet 65a is provided with an inlet projection 53, when the liquid contents pass through the inverted inlet 65a, the liquid contents flow along the inlet surface 53b and are guided to the relay port 64c, thereby preventing them from flowing into the retracted recess 69. The liquid flow of the liquid contents that has passed through the inverted inlet 65a and flowed into the retracted recess 69 prevents the first switching valve 61 in the retracted recess 69 from floating towards the relay port 64c. As a result, when the liquid contents are introduced into the liquid contents inlet 21f of the cylinder section 21, it is possible to reliably prevent the first switching valve 61 from being pressed against the valve seat 64d in the upright position by the pressure reduction inside the cylinder section 21 exerted through the relay port 64c when the discharger 10 is inverted.

[0073] The lower edge 53a of the introduction projection 53 extends upward as it moves radially inward, and in the longitudinal section view, the inclination angle of the lower edge 53a of the introduction projection 53 with respect to the horizontal direction perpendicular to the axis O is 15° or more and 40° or less, the introduction projection 53 is located radially inward from the lower end on the inner surface of the inverted introduction opening 65a, and in the longitudinal section view, the radial inner end of the lower end on the inner surface of the inverted introduction opening 65a is located on the extension of the lower edge 53a of the introduction projection 53. Therefore, the introduction projection 53 can be easily formed by so-called wire cutting without complicating the structure of the molding die.

[0074] For example, the inlet 63a when the valve is upright may be configured to extend radially through the third outer cylinder portion 73, and the recess for the second switching valve 62 may be a portion of the third outer cylinder portion 73 located below the inlet 63a when the valve is upright, with the inlet projection 53 provided at the inlet 63a when the valve is upright. In this case, when the liquid contents pass through the upright inlet 63a, the liquid contents flow along the inlet surface 53b and are guided to the relay port 64c, thereby preventing them from flowing into the retracted recess. The liquid flow of the liquid contents that has passed through the upright inlet 63a and flowed into the retracted recess prevents the second switching valve 62 in the retracted recess from floating towards the relay port 64c. As a result, when the liquid contents are introduced into the liquid contents inlet 21f of the cylinder section 21, the second switching valve 62 is prevented from being pressed against the valve seat 64e in the inverted position by the pressure reduction within the cylinder section 21 exerted through the relay port 64c when the discharger 10 is upright.

[0075] Next, the inverted / upright unit 3 according to the third embodiment of the present invention will be described with reference to Figures 6A and 6B. In this third embodiment, the same reference numerals are used for parts that are the same as those in the second embodiment, and their descriptions are omitted. Only the differences will be described.

[0076] In the inverted unit 3 of this embodiment, the introduction surface 53b of the introduction projection 53 extends straight in the vertical direction. The lower end edge 53a of the introduction projection 53 is inclined at 3° in the same direction as in the second embodiment when viewed in a vertical cross-section along the vertical direction. In the aforementioned vertical cross-section, the radial inner end of the lower end on the inner surface of the inverted introduction opening 65a is located on the extension line of the lower end edge 53a of the introduction projection 53.

[0077] As described above, with the inverted / upright unit 3 of this embodiment, since the introduction surface 53b of the introduction projection 53 extends straight in the vertical direction, it is possible to reliably prevent the liquid contents from flowing into the retracted recess 69 when passing through the inlet 65a when the unit is upside down.

[0078] Furthermore, the technical scope of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0079] It is not necessary to provide the covering portion 51 and the guide portion 52 on the inside of the outer cylindrical member 63. The retaining portion for the first switching valve 61 and the retaining portion 75 for the second switching valve 62 do not need to be provided.

[0080] The covering portion 51 may be formed as a top-shaped cylindrical shape extending around the entire circumference and arranged coaxially with the axis O, with multiple lateral openings 51a formed at circumferential intervals on the peripheral wall of the covering portion 51, and the restraining portion 75 for the second switching valve 62 may be formed as a cylindrical shape extending continuously around the entire circumference and arranged coaxially with the axis O on the outer peripheral edge of the top wall of the covering portion 51. In this configuration, the second switching valve 62 is located on the upper surface of the top wall of the covering portion 51 inside the restraining portion 75 and is arranged on the axis O. In this case, when the discharger 10 is inverted, the second switching valve 62 can be brought into close contact with the inverted valve seat 64e.

[0081] Furthermore, without departing from the spirit of the present invention, the components in the above embodiments may be replaced with well-known components as appropriate, and the above embodiments and modifications may be combined as appropriate.

[0082] Examples of the present invention are as follows: <1> A unit for forward and inverted orientation, which is attached to the cylinder portion of the discharger, When the discharger is upright, it has an upright inlet that allows the liquid contents inside the container body to be introduced into the liquid inlet of the cylinder section, When the dispenser is inverted, it has an inverted inlet that allows the liquid contents inside the container body to be introduced into the liquid contents inlet, A relay port that can communicate with the liquid inlet, the upright inlet, and the inverted inlet, When the discharger is upright, a first switching valve that contacts the valve seat in the upright position to block communication between the inverted inlet and the relay port, A second switching valve, which contacts the valve seat when the discharger is inverted, thereby blocking communication between the inlet when upright and the relay port, A unit for upright and inverted operation, comprising: a retractable recess that, when the discharger is upright, allows the second switching valve to enter and separates the second switching valve from the first path through which the liquid contents flow from the upright inlet to the relay port, on the opposite side of the inverted valve seat and in a direction intersecting the opening direction of the upright inlet; and at least one of the retractable recesses that, when the discharger is inverted, allows the first switching valve to enter and separates the first switching valve from the second path through which the liquid contents flow from the inverted inlet to the relay port, on the opposite side of the upright valve seat and in a direction intersecting the opening direction of the inverted inlet. <2> The system includes a flow path forming member in which a common flow path is formed that connects the liquid inlet and the relay port, The aforementioned flow path forming member includes a top-shaped cylindrical portion that extends in the vertical direction, The inverted inlet and the relay port are in communication through the inside of the top cylindrical portion. The inverted inlet is formed in the portion of the circumferential wall of the top-shaped cylindrical part located below the upper end. The portion located above the inverted inlet inside the top cylindrical portion is the retracted recess into which the first switching valve enters when the discharger is inverted. <1> The inverted / upright unit described above. <3> The discharger is provided with at least one of the following restraining parts: a restraining part that prevents the second switching valve from entering the first path when the discharger is upright, and a restraining part that prevents the first switching valve from entering the second path when the discharger is inverted. <1> or <2> The inverted / upright unit described above. <4> At least one of the upright inlet and the inverted inlet is provided with an inlet projection that extends along the path of the liquid contents from the inlet toward the relay port and has an inlet surface that faces inward toward the inlet along the opening direction of the inlet. <1> from <3> A forward-facing inverted unit as described in one of the following. <5> The tip edge of the aforementioned introduction projection, facing the relay port side along the path, extends in a direction away from the relay port as it moves outward from the introduction port, along the opening direction of the upright or inverted introduction port on which the introduction projection is provided. In a longitudinal cross-sectional view, the inclination angle of the tip edge of the introduction projection is set to be between 15° and 40°. The aforementioned introduction projection is located on the outside of the inlet in the upright or inverted position, in the inlet in the upright position where the introduction projection is provided, and is aligned with the opening direction more than the surface facing the surface on which the introduction projection is provided. In a vertical cross-sectional view, the end of the upright or inverted inlet on the side of the facing surface along the opening direction, where the introduction projection is provided, is located on the extension of the tip edge of the introduction projection. <4> The inverted / upright unit described above. [Explanation of Symbols]

[0083] 1, 2, 3 Units for upright and inverted inversion 10 Dispenser 11 pumps 12 Discharge heads 12c Discharge hole 21 Cylinder section 21f Inlet for liquid contents 51 Covering part 51a Side opening 52 Information Department 53 Introductory protrusion 53a Lower edge (tip edge) 61 First switching valve 62 Second switching valve 63 Outer cylinder member 63a Upright inlet 64c relay port 64d Valve seat when standing upright 64e Inverted valve seat 65 Flow channel forming member 65a Inverted Inlet 65b Plug part (crested cylindrical part) 68 Common channel 69 Recess 75 Deterrent L1 First Route L2 Second Path W Container Body W1 Mouth

Claims

1. A unit for forward and inverted orientation, which is attached to the cylinder portion of the discharger, When the discharger is upright, it has an upright inlet that allows the liquid contents inside the container body to be introduced into the liquid inlet of the cylinder section, When the dispenser is inverted, it has an inverted inlet that allows the liquid contents inside the container body to be introduced into the liquid contents inlet, A relay port that can communicate with the liquid inlet, the upright inlet, and the inverted inlet, When the discharger is upright, a first switching valve that contacts the valve seat in the upright position to block communication between the inverted inlet and the relay port, A second switching valve, which contacts the valve seat when the discharger is inverted, thereby blocking communication between the inlet when upright and the relay port, A unit for upright and inverted operation, comprising: a retractable recess that, when the discharger is upright, allows the second switching valve to enter and separates the second switching valve from the first path through which the liquid contents flow from the upright inlet to the relay port, on the opposite side of the inverted valve seat and in a direction intersecting the opening direction of the upright inlet; and at least one of the retractable recesses that, when the discharger is inverted, allows the first switching valve to enter and separates the first switching valve from the second path through which the liquid contents flow from the inverted inlet to the relay port, on the opposite side of the upright valve seat and in a direction intersecting the opening direction of the inverted inlet.

2. The system includes a flow path forming member in which a common flow path is formed that connects the liquid inlet and the relay port, The aforementioned flow path forming member includes a top-shaped cylindrical portion that extends in the vertical direction, The inverted inlet and the relay port are in communication through the inside of the top cylindrical portion. The inverted inlet is formed in the portion of the circumferential wall of the top-shaped cylindrical part located below the upper end. The inverted / upright unit according to claim 1, wherein the portion located above the inverted inlet on the inside of the top cylindrical portion is the retractable recess into which the first switching valve enters when the discharger is inverted.

3. The upright / inverted unit according to claim 1 or 2, comprising at least one of the following restraining parts: a restraining part that prevents the second switching valve from entering the first path when the discharger is upright, and a restraining part that prevents the first switching valve from entering the second path when the discharger is inverted.

4. The upright and inverted unit according to claim 1 or 2, wherein at least one of the upright inlet and the inverted inlet is provided with an inlet projection that extends along the path of the liquid contents from the inlet toward the relay port and has an inlet surface that faces inward toward the inlet along the opening direction of the inlet.

5. The tip edge of the aforementioned introduction projection, facing the relay port side along the path, extends in a direction away from the relay port as it moves outward from the introduction port, along the opening direction of the upright or inverted introduction port on which the introduction projection is provided. In a longitudinal cross-sectional view, the inclination angle of the tip edge of the introduction projection is set to be between 15° and 40°. The aforementioned introduction projection is located on the outside of the inlet in the upright or inverted position, along the opening direction, in the inlet in which the introduction projection is provided, and is positioned on the outside of the inlet in a direction greater than the surface facing the surface on which the introduction projection is provided. In a vertical cross-sectional view, the end of the upright or inverted inlet provided with the introduction projection on the side of the introduction projection along the opening direction of the opposing surfaces is located on the extension of the tip edge of the introduction projection, as described in claim 4.

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