Ejector

Abstract

A dispenser having an arrangement structure of an outside air introduction valve member suitable for a structure in which a cylinder part having an air vent is recessed deeply downward inside the mouth part of a container body is provided. [Solution] The dispenser 2 comprises a cylinder member 5 having a cylinder portion 5a, a forward / inverted unit 8 that dispenses the contents 4 in both the upright and inverted positions, a cylinder receiving member 10 that holds the cylinder member 5 and has cylindrical wall portions 10a that are in close contact with the cylinder portion 5a above and below the air vent 5a1 of the cylinder portion 5a and extension portions 10b that are held by an attachment cap 12, an outside air introduction path P that has the air vent 5a1, the gap P1 between the cylinder portion 5a and the cylindrical wall portion 10a and a through-hole 10a1 that penetrates the cylindrical wall portion 10a, and an outside air introduction valve member 9 that has a valve body support portion 9a and an outside air introduction valve body 9b, and the outside air introduction valve body 9b restrains leakage of the contents 4 by seating on a seating portion 10a2 of the cylindrical wall portion 10a in the inverted position and is separated from the seating portion 10a2 to allow the introduction of outside air.

Description

[Technical Field]

[0001] The present invention relates to a dispenser. [Background technology]

[0002] A dispenser is known that is attached to the mouth of a container body and dispenses the contents of the container body to the outside in an upright or inverted position depending on the operation, the dispenser having an air vent provided in the cylinder part, an outside air introduction path that introduces outside air into the container body through the air vent, and an outside air introduction valve member that is provided around the entire circumference of the cylinder part, straddling the air vent in the vertical direction, has a fitting part that is in close contact with the outer peripheral surface of the cylinder part above the air vent and has an outside air introduction valve body below the air vent, the outside air introduction valve body contacting the outer peripheral surface of the cylinder part when dispensing in an inverted position prevents the contents from leaking into the outside air introduction path, and moves away from the outer peripheral surface of the cylinder part when outside air is introduced through the outside air introduction path, allowing outside air to be introduced into the container body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2024-65877 Summary of the Invention [Problem to be solved by the invention]

[0004] When using an outside air introduction valve member configured as described above, considering ease of installation, the fitting portion of the outside air introduction valve member cannot be fitted too tightly to the outer peripheral surface of the cylinder portion, and in order to prevent the outside air introduction valve member from shifting downward, it is necessary to provide a flange-shaped protrusion at the upper end of the outside air introduction valve member, as described in Patent Document 1, and to support the protrusion from below by an annular gasket that is tightly fitted against the upper surface of the mouth of the container body.

[0005] However, if it is desired to have a structure in which the cylinder portion having the vent hole is recessed deep downward inside the mouth portion of the container body, it is difficult to adopt a configuration in which the outside air introduction valve member is supported from below by an annular gasket as described above.

[0006] Therefore, an object of the present invention is to provide a dispenser having an arrangement structure for an outside air introduction valve member that is suitable for a structure in which a cylinder portion having an air vent is recessed deep downward inside the mouth portion of the container body. [Means for solving the problem]

[0007] One aspect of the present invention is as follows.

[0008] [1] A dispenser that is attached to the mouth of a container body and dispenses the contents of the container body to the outside in response to an operation, a cylinder member having a cylinder portion; a sliding member that slides within the cylinder portion; a holding member having a discharge port and moving up and down relative to the cylinder portion together with the sliding member in response to the operation; an internal flow path that sends and discharges the content to the discharge port through a pump chamber defined by the cylinder portion and the sliding member in response to the lifting and lowering movement of the holding member; a normal / inverted unit having a lower suction port and an upper suction port provided above the lower suction port, wherein in an upright position, the lifting and lowering movement of the holding member causes the contents in the container body to flow from the lower suction port serving as an inlet of the internal flow path toward the pump chamber, and in an inverted position, the lifting and lowering movement of the holding member causes the contents in the container body to flow from the upper suction port serving as an inlet of the internal flow path toward the pump chamber; an attachment cap attached to the mouth portion; a cylinder support member that receives and holds the cylinder member from below, the cylinder support member having cylindrical wall portions that are in close contact with the outer peripheral surface of the cylinder portion above and below the vent hole that penetrates the cylinder portion, and an extension portion that is connected to the upper end of the cylindrical wall portion and is held by the mounting cap; an outside air introduction path that includes the vent hole of the cylinder portion, a gap between the outer circumferential surface of the cylinder portion and the cylindrical wall portion, and a through-hole that penetrates the cylindrical wall portion, and that introduces outside air into the container body in response to the lifting and lowering operation of the holding member; an outside air introduction valve member having a valve body support portion and an outside air introduction valve body connected to the valve body support portion, the cylindrical wall portion has a valve holding portion that holds the valve body support portion and a seating portion on which the outside air introduction valve body is seated, The outside air introduction valve body prevents the contents from leaking into the outside air introduction path when the contents are ejected in the inverted position by sitting on the seating portion, and allows the outside air to be introduced into the container body by moving away from the seating portion when the outside air is introduced through the outside air introduction path.

[0009] [2] the valve body support portion is cylindrical and has an axis extending in a radial direction of the cylindrical wall portion, an outer peripheral surface of the cylindrical wall portion has a holding recess into which the valve body support portion is fitted and held; The discharger according to [1], wherein the outside air introduction valve body extends from the valve body support portion radially inward of the valve body support portion.

[0010] [3] the outside air introduction valve body has a through hole that passes through the outside air introduction valve body on the axis of the valve body support part, The discharger according to [2], wherein the seating portion is seated on an outer peripheral edge portion of the through hole of the outside air introduction valve body.

[0011] [4] the cylindrical wall portion has a protrusion portion that is provided adjacent to the through hole and protrudes radially outward from the cylindrical wall portion on the axis of the valve body support portion, The protrusion has a reduced diameter portion that reduces in diameter toward the tip side of the protrusion to form the seating portion, and a tip convex portion that protrudes from the reduced diameter portion toward the tip side and enters the through hole. [3] The dispenser described in

[0012] [5] The mounting cap has an annular top wall, an outer peripheral wall portion extending downward from the outer peripheral edge portion of the top wall around the entire circumference, a female screw portion provided on the inner peripheral surface of the outer peripheral wall portion and screwed into the outer peripheral surface of the mouth portion, a seal tube extending downward from the top wall and in close contact with the inner peripheral surface of the mouth portion, and a fitting retaining portion provided on the inner peripheral edge portion of the top wall, The dispenser according to any one of [1] to [4], wherein the extension portion is held by fitting into the fitting and holding portion. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a dispenser having an arrangement structure of an outside air introduction valve member that is suitable for a structure in which a cylinder portion having an air vent is recessed deep downward inside the mouth portion of the container body. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 2 is a vertical cross-sectional view showing a state before discharging of the dispensing container in one embodiment of the present invention. [Figure 2] FIG. 2 is a vertical cross-sectional view showing a state during discharging of the discharge container shown in FIG. [Figure 3] 1, and FIG. 1(b) is an external view of the outside air introduction valve member as seen in the direction of arrow A in FIG. [Figure 4] 3(a) is a first modified example of the portion shown in FIG. 3(a), and FIG. 3(b) is an external view of the outside air introduction valve member as seen in the direction of arrow B in FIG. 3(a). [Figure 5] 3(a) is a second modified example of the portion shown in FIG. 3(a), and FIG. 3(b) is an external view of the outside air introduction valve member as seen in the direction of arrow C in FIG. 3(a). DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0016] As shown in FIG. 1 , in one embodiment of the present invention, a dispensing container 1 includes a dispenser 2 and a container body 3. The container body 3 includes a mouth 3a, a body 3b, and a bottom 3c, which are connected in this order, and contains a content 4. The content 4 is not particularly limited, but is a liquid in this embodiment. In this embodiment, the content 4 is a cosmetic product such as a lotion or antiperspirant, but is not limited thereto. The dispenser 2 is attached to the mouth 3a of the container body 3 and dispenses the content 4 from the container body 3 to the outside in response to operation. In this embodiment, the vertical direction is the direction along the central axis O1, and the upward direction is the direction from the cylinder portion 5a side to the discharge port C1 side (from the bottom 3c side of the container body 3 to the mouth 3a side) along the vertical direction, and the downward direction is the opposite direction.

[0017] As shown in Figures 1 and 2, the dispenser 2 has a cylinder member 5 having a cylindrical cylinder portion 5a centered on a central axis O1, a sliding member 6 that slides within the cylinder portion 5a, a holding member 7 having a discharge port C1 and moving up and down relative to the cylinder portion 5a together with the sliding member 6 in response to operation, and an internal flow path C that sends and discharges the content 4 to the discharge port C1 in response to the moving up and down of the holding member 7 via a pump chamber C2 defined by the cylinder portion 5a and the sliding member 6.

[0018] The dispenser 2 also has a lower suction port C3 and an upper suction port C4 located above the lower suction port C3, and in the upright position (the position shown in FIGS. 1 and 2), the holding member 7 moves up and down to cause the contents 4 in the container body 3 to flow from the lower suction port C3 serving as the inlet of the internal flow path C toward the suction port C5 of the pump chamber C2, while in the inverted position (not shown), the holding member 7 moves up and down to cause the contents 4 in the container body 3 to flow from the upper suction port C4 serving as the inlet of the internal flow path C toward the suction port C5 of the pump chamber C2. The cylinder member 5 has a connecting tube portion 5b extending downward from the lower end of a cylinder portion 5a whose diameter tapers downward, and the forward and inverted unit 8 is connected to the connecting tube portion 5b. The cylinder member 5 has a valve receiving portion 5d that extends radially inward from the connecting cylindrical portion 5b and forms the suction port C5, and the valve receiving portion 5d is provided with a movable valve 11 that is held within the suction port C5 so that it can move up and down, and the movable valve 11 closes the suction port C5 by descending under its own weight and seating on the valve receiving portion 5d, and opens the suction port C5 by rising and releasing the seat. Note that the arrangement of the valve receiving portion 5d and the movable valve 11 is not limited to this. A suction valve of a type other than the movable valve 11 may also be provided.

[0019] The dispenser 2 includes an attachment cap 12 attached to the opening 3a, a cylindrical wall portion 10a having a cylindrical shape centered on a central axis O1 and having an upper seal portion above the vent hole 5a1 that penetrates the cylinder portion 5a in the radial direction and a lower seal portion below the vent hole 5a1 that are in close contact with the outer circumferential surface of the cylinder portion 5a, and an extension portion 10b that is connected to the upper end of the cylindrical wall portion 10a and is held by the attachment cap 12, and receives and holds the cylinder member 5 from below. The container includes a cylinder receiving member 10, an outside air introduction path P having a vent 5a1 in the cylinder portion 5a, a gap P1 between the outer circumferential surface of the cylinder portion 5a and the cylindrical wall portion 10a, and a through-hole 10a1 penetrating the cylindrical wall portion 10a, and introducing outside air into the container body 3 in response to the lifting and lowering movement of the holding member 7 (see the two-dot chain arrows in FIGS. 2 and 3(b)), and an outside air introduction valve member 9 having a valve body support portion 9a and an outside air introduction valve body 9b connected to the valve body support portion 9a. In an initial state before the holding member 7 is operated, the sliding member 6 covers the vent 5a1 to block the outside air introduction path P (see FIG. 1), and when the holding member 7 is lowered by operation, the sliding member 6 can release the blockage of the outside air introduction path P (see FIG. 2).

[0020] The cylinder member 5 has a flange portion 5c that protrudes radially outward from the upper end of the cylinder portion 5a, and the cylinder portion 5a has a reduced-diameter portion 5a2 at the lower end of the cylinder portion 5a, the reduced-diameter portion 5a2 decreasing in diameter toward the bottom. The extension portion 10b of the cylinder receiving member 10 has an annular wall 10b1 that extends radially outward from the upper end of the cylindrical wall portion 10a, and an extended cylindrical portion 10b2 that extends upward from the outer periphery of the annular wall 10b1 and is held by fitting into the mounting cap 12. The cylinder receiving member 10 has an inward-projecting portion 10d that protrudes radially inward around the entire circumference from the lower end of the cylindrical wall portion 10a. The cylinder receiving member 10 holds the cylinder member 5 by supporting the lower surface of the flange portion 5c of the cylinder member 5 from below with the annular portion and supporting the lower surface of the reduced-diameter portion 5a2 of the cylinder member 5 from below with the inward-projecting portion 10d. It should be noted that the cylinder member 5 may be received by either the annular portion or the inward protruding portion 10d.

[0021] The cylindrical wall portion 10a of the cylinder receiving member 10 has a valve holding portion 10a3 that holds the valve body support portion 9a, and a seating portion 10a2 on which the outside air introduction valve body 9b is seated. The outside air introduction valve body 9b prevents the contents 4 from leaking into the outside air introduction path P when ejected in an inverted position by sitting on the seating portion 10a2, and also allows outside air to be introduced into the container body 3 by elastically deforming and moving away from the seating portion 10a2 when outside air is introduced through the outside air introduction path P.

[0022] 3, the valve element support portion 9a is cylindrical with an axis O2 extending radially of the cylindrical wall portion 10a, the outer peripheral surface of the cylindrical wall portion 10a has a circular annular valve holding portion (holding recess) 10a3 into which the valve element support portion 9a is fitted and held, and the outside air introduction valve element 9b extends radially inward from the valve element support portion 9a. The holding recess 10a3 is defined by an outer cylinder wall 10a4 that protrudes radially outward from the cylindrical wall portion 10a along the axis O2 of the valve element support portion 9a, and an inner cylinder wall 10a5 that protrudes radially outward from the cylindrical wall portion 10a radially inward of the outer cylinder wall 10a4.

[0023] In this embodiment, the outside air introduction valve element 9b has a through hole 9b1 that penetrates the outside air introduction valve element 9b on the axis O2 of the valve element support portion 9a, and the seating portion 10a2 is seated on the outer peripheral edge of the through hole 9b1 of the outside air introduction valve element 9b. Also, in this embodiment, the cylindrical wall portion 10a has protrusions 10a6 that are provided adjacent to the multiple through holes 10a1 that are arranged around the axis O2 of the valve element support portion 9a and that protrude radially outward from the cylindrical wall portion 10a on the axis O2 of the valve element support portion 9a, and the protrusions 10a6 have reduced diameter portions 10a7 that reduce in diameter toward the tip of the protrusions 10a6 and form the seating portion 10a2, and a tip convex portion 10a8 that protrudes from the reduced diameter portion 10a7 toward the tip and enters the through hole 9b1. In this embodiment, the outside air introduction valve member 9 is made of a resin such as LLDPE (linear low density polyethylene), and the cylinder member 5 and cylinder receiving member 10 are made of a resin such as PP (polypropylene) or PE (polyethylene). Depending on the type of contents 4, the container body 3 may be placed at a high temperature, increasing the internal pressure, or the contents 4 may have a low viscosity and low surface tension (for example, when the contents 4 is ethanol). In such cases, a higher sealing performance is required, so it is preferable to make the outside air introduction valve member 9 out of rubber, for example.

[0024] According to the above configuration, the cylinder member 5 can be held by the attachment cap 12 and the cylinder receiving member 10, so that the cylinder portion 5a having the vent hole 5a1 can be recessed deeply downward into the mouth portion 3a of the container body 3. Furthermore, the cylinder receiving member 10 and the outside air introduction valve member 9 can smoothly introduce outside air into the container body 3 through the outside air introduction path P when negative pressure is created inside the container body 3 as the contents 4 are discharged.

[0025] The outside air introduction valve member 9 and the cylinder receiving member 10 are not limited to the above configurations, and may be configured as shown in a first modified example shown in Fig. 4 or a second modified example shown in Fig. 5, in which the outside air introduction valve body 9b has a closing portion 9b2 that closes an opening formed inside the seating portion 10a2 by seating on the seating portion 10a2, and a connecting portion 9b3 that connects the closing portion 9b2 to the valve body support portion 9a, and the connecting portion 9b3 has a through-hole 9b1 that penetrates the connecting portion 9b3 in a direction along the axis O2 of the valve body support portion 9a. In this case, the configurations of the valve body support portion 9a and the holding recess 10a3 may be similar to those described above.

[0026] 4, the cylindrical wall portion 10a has a cylindrical body 10a9 that is provided to surround a through-hole 10a1 on the axis O2 of the valve element support portion 9a and protrudes radially outward from the cylindrical wall portion 10a, and the seating portion 10a2 is provided on the tip surface of the cylindrical body 10a9. The connecting portion 9b3 has three through-holes 9b1 arranged in a line around the axis O2 of the valve element support portion 9a, but the number of through-holes 9b1 provided in the connecting portion 9b3 is not limited to this. In this example, the outside air introduction valve member 9 is made of a resin such as LLDPE.

[0027] In the second modified example, as shown in Fig. 5, the through hole 10a1 is provided on the axis O2 of the valve element support portion 9a, and the seat portion 10a2 is provided on the outer peripheral edge of the through hole 10a1. The blocking portion 9b2 has a columnar shape extending along the axis O2 of the valve element support portion 9a, but is not limited to this. The connecting portion 9b3 has three through holes 9b1 arranged in a row around the axis O2 of the valve element support portion 9a, but the number of through holes 9b1 provided in the connecting portion 9b3 is not limited to this. In this example, the outside air introduction valve member 9 is made of resin such as LLDPE.

[0028] The mounting cap 12 has an annular top wall 12a, an outer peripheral wall portion 12b extending downward from the outer peripheral edge of the top wall 12a around the entire circumference, a female thread portion 12c provided on the inner peripheral surface of the outer peripheral wall portion 12b and screwing into the outer peripheral surface of the mouth portion 3a, a cylindrical sealing tube 12d extending downward from the top wall 12a and in close contact with the inner peripheral surface of the mouth portion 3a, and a fitting retaining portion 12e provided on the inner peripheral edge of the top wall 12a, and the extension tube portion 10b2 of the extension portion 10b is retained by fitting into the fitting retaining portion 12e. According to the above configuration, the gap between the dispenser 2 and the mouth 3a of the container body 3 can be sealed by the sealing tube 12d that is in close contact with the inner surface of the mouth 3a, and the cylinder member 5 can be held via the cylinder receiving member 10 by the fitting holding portion 12e. Therefore, there is no need to sandwich a part of the cylinder member 5 and annular gasket between the upper surface of the mouth 3a of the container body 3 and the attachment cap 12 as in the conventional case, and therefore the vertical width of the attachment cap 12 can be reduced and the appearance of the dispenser 2 can be improved.

[0029] In addition, in this embodiment, the cylinder receiving member 10 has an annular wall 10b1 and an extension tube portion 10b2, and the attachment cap 12 has a fitting retaining portion 12e and a sealing tube 12d, so that the mouth portion 3a is configured to be wide-mouthed, and the refilling operation can be easily performed when refilling the contents 4 into the container body 3 for use.

[0030] The discharger 2 has a pressure accumulator cylinder section 13 having a smaller cross-sectional area than the cylinder section 5a, and a pressure accumulator sliding member 14 that slides within the pressure accumulator cylinder section 13, and the holding member 7, when operated, moves up and down relative to the cylinder section 5a together with the pressure accumulator sliding member 14, the pressure accumulator cylinder section 13, and the sliding member 6, and the internal flow path C sends and discharges the contents 4 to the discharge port C1 in accordance with the moving up and down of the holding member 7 via a pump chamber C2 defined by the pressure accumulator cylinder section 13, the pressure accumulator sliding member 14, the cylinder section 5a, and the sliding member 6, and the discharger 2, when operated, moves the holding member 7, when operated together with the pressure accumulator sliding member 14, downward relative to the cylinder section 5a together with the pressure accumulator cylinder section 13, and the sliding member 6, The pressure accumulator opening / closing unit 17 has a connecting portion 15 that connects the holding member 7 to the pressure accumulator cylinder portion 13 so that after the holding member 7 rises relative to the pressure accumulator cylinder portion 13, it performs an upward movement relative to the cylinder portion 5a together with the pressure accumulator cylinder portion 13 and the sliding member 6; a holding member biasing portion 16 (compression spring) that applies a biasing force to the holding member 7 for an upward movement relative to the cylinder portion 5a in order to raise the pressure accumulator cylinder portion 13 and the sliding member 6 via the connecting portion 15; and a pressure accumulator opening / closing unit 17 that opens the internal flow path C when the internal pressure of the pump chamber C2 increases due to the downward movement of the pressure accumulator sliding member 14 relative to the pressure accumulator cylinder portion 13, and closes when the internal pressure of the pump chamber C2 decreases due to the upward movement of the pressure accumulator sliding member 14 relative to the pressure accumulator cylinder portion 13.

[0031] According to the above configuration, when the operation is performed, the holding member 7, together with the pressure-accumulator sliding member 14, first descends relative to the pressure-accumulator cylinder portion 13, increasing the internal pressure of the pump chamber C2. As a result, the pressure-accumulator opening / closing portion 17 opens, and the increased internal pressure of the pump chamber C2 causes the contents 4 to be forcefully discharged to the outside. Further, by continuing the operation, the holding member 7, together with the pressure-accumulator cylinder portion 13 and the sliding member 6, descends relative to the cylinder portion 5a, and the increased internal pressure of the pump chamber C2 holds the pressure-accumulator opening / closing portion 17 in the open state (the state shown in FIG. 2 ), allowing the contents 4 to continue to be forcefully discharged. When the discharge of the contents 4 is completed, the internal pressure of the pump chamber C2 decreases, causing the pressure-accumulator opening / closing portion 17 to close. When the operation is released, with the pressure-accumulator opening / closing portion 17 closed, the biasing force of the holding member biasing portion 16 causes the holding member 7 to ascend relative to the cylinder portion 5a toward its initial position, decreasing the internal pressure of the pump chamber C2, allowing the contents 4 to be sucked into the pump chamber C2 from the upstream side. Thus, according to the above configuration, pressure is first accumulated by the pressure accumulator cylinder section 13 and pressure accumulator sliding member 14 on the side with the smaller cross-sectional area during operation, so that a light operation can achieve a powerful discharge of the contents 4 from the start. Further, the cylinder section 5a and sliding member 6 on the side with the larger cross-sectional area are used for subsequent discharge, so that the cylinder stroke can be prevented from becoming long even when designed to obtain a large discharge amount.

[0032] The holding member 7 has a finger-type push-down head 7b that has a discharge port C1 and is pressed down by a finger. The dispenser 2 has a support member 18 that is attached to the upper end of the cylinder portion 5a and supports the lower end of the holding member biasing portion 16. With the above configuration, when the above-described two-stage pressure accumulation type dispenser 2 is pressed down with a finger, the height of the push-down head 7b is reduced, making it easier to apply force and improving operability. Note that the push-down head 7b is not limited to the finger type. Furthermore, the holding member 7 is not limited to a configuration that has a push-down head 7b.

[0033] In this embodiment, the pressure accumulator opening / closing section 17 is made up of the pressure accumulator sliding member 14, a pressure accumulator biasing section 17a (compression spring) that biases the pressure accumulator sliding member 14 downward, and a pressure accumulator seating section 7a of the retaining member 7 on which the pressure accumulator sliding member 14 is seated, and the pressure accumulator sliding member 14 rises from a state in which it is seated on the pressure accumulator seating section 7a against the biasing force from the pressure accumulator biasing section 17a due to an increase in the internal pressure of the pump chamber C2, and moves away from the pressure accumulator seating section 7a, thereby opening the pressure accumulator opening / closing section 17, but the configuration of the pressure accumulator opening / closing section 17 is not limited to this.

[0034] The fitting and holding portion 12e of the attachment cap 12 includes an outer cylindrical portion 12e1 extending downward from the top wall 12a radially inward of the seal tube 12d, and an inner cylindrical portion 12e2 extending downward from the top wall 12a radially inward of the outer cylindrical portion 12e1. The extension cylindrical portion 10b2 of the cylinder receiving member 10 is sandwiched between the outer cylindrical portion 12e1 and the inner cylindrical portion 12e2. The cylinder receiving member 10 includes a flange-shaped protruding portion 10c that protrudes radially outward from a vertically intermediate portion of the extension cylindrical portion 10b2 along the entire circumference. The flange-shaped protruding portion 10c has an opposing surface 10c1 on its underside that faces the stepped surface 3a1 of the mouth portion 3a. If the fitting and holding portion 12e becomes disengaged due to an external impact or the like, the stepped surface 3a1 of the mouth portion 3a will receive the opposing surface 10c1 of the protruding portion 10c, thereby holding the cylinder member 5.

[0035] The support member 18 has a retaining portion 18a that prevents the sliding member 6 from slipping out upward from the inside of the cylinder portion 5a, a flange-shaped protrusion 18b that extends radially outward from the retaining portion 18a, and a support portion 18c that supports the lower end of the holding member biasing portion 16 radially inward from the protrusion 18b, and the mounting cap 12 has an upper annular wall 12f that extends radially inward from the lower end of the inner tube portion 12e2, and a guide tube 12g that extends upward from the inner peripheral edge of the upper annular wall 12f and guides the lifting and lowering movement of the holding member 7, and the protrusion 18b of the support member 18 is arranged between the upper annular wall 12f of the mounting cap 12 and the flange portion 5c of the cylinder member 5 located below it.

[0036] The outside air introduction path P introduces outside air into the container body 3 by passing it through the gap between the push-down head 7b and the inner cylindrical portion 12e2 of the attachment cap 12, between the upper annular wall 12f and the guide tube 12g, between the pressure accumulator cylinder portion 13 and the support member 18, the ventilation hole 5a1, the gap P1 between the cylinder portion 5a and the cylindrical wall portion 10a, the through hole 10a1, and between the seating portion 10a2 and the outside air introduction valve body 9b in this order.

[0037] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the above-described embodiments can be modified in various ways without departing from the gist of the present invention. [Explanation of symbols]

[0038] 1 Discharge container 2 Dispenser 3 Container body 3a Mouth 3a1 Step surface 3b Torso 3c bottom 4 Contents 5 Cylinder parts 5a Cylinder section 5a1 Ventilation hole 5a2 Reduced diameter part 5b Connecting tube 5c Flange 5d Valve receiving part 6. Sliding member 7 Retaining member 7a Accumulator seat 7b Push-down head 8 Forward and inverted units 9. Outside air intake valve member 9a Valve body support part 9b Outside air intake valve body 9b1 Through hole 9b2 Occlusion 9b3 Connecting part 10 Cylinder receiving member 10a Cylindrical wall 10a1 Through hole 10a2 Seating area 10a3 Valve holding portion (holding recess) 10a4 Outer cylinder wall 10a5 Inner cylinder wall 10a6 protrusion 10a7 Reduced diameter part 10a8 Tip convex part 10a9 cylinder 10b extension 10b1 Circular wall 10b2 Extension cylinder part 10c protrusion 10c1 Opposite surface 10d Inward protrusion 11 Transfer valve 12 Mounting cap 12a Ceiling wall 12b Outer wall 12c female thread 12d seal tube 12e Fitting holding part 12e1 Outer cylinder 12e2 Inner cylinder part 12f Upper annular wall 12g guide tube 13 Accumulator cylinder section 14 Pressure storage sliding member 15 Connection 16 Holding member biasing portion 17 Accumulator opening and closing section 17a Accumulated pressure section 18 Support member 18a Retaining part 18b Protrusion 18c Support part C Internal flow path C1 outlet C2 Pump Room C3 Lower intake port C4 Upper intake port C5 Intake port O1 center axis O2 axis P Outside air intake route P1 gap

Claims

1. A dispenser that is attached to the mouth of a container body and dispenses the contents of the container body to the outside in response to an operation, a cylinder member having a cylinder portion; a sliding member that slides within the cylinder portion; a holding member having a discharge port and moving up and down relative to the cylinder portion together with the sliding member in response to the operation; an internal flow path that sends and discharges the content to the discharge port through a pump chamber defined by the cylinder portion and the sliding member in response to the lifting and lowering movement of the holding member; a normal / inverted unit having a lower suction port and an upper suction port provided above the lower suction port, wherein in an upright position, the lifting and lowering movement of the holding member causes the contents in the container body to flow from the lower suction port serving as an inlet of the internal flow path toward the pump chamber, and in an inverted position, the lifting and lowering movement of the holding member causes the contents in the container body to flow from the upper suction port serving as an inlet of the internal flow path toward the pump chamber; an attachment cap attached to the mouth portion; a cylinder support member that receives and holds the cylinder member from below, the cylinder support member having cylindrical wall portions that are in close contact with the outer peripheral surface of the cylinder portion above and below the vent hole that penetrates the cylinder portion, and an extension portion that is connected to the upper end of the cylindrical wall portion and is held by the mounting cap; an outside air introduction path that includes the vent hole of the cylinder portion, a gap between the outer circumferential surface of the cylinder portion and the cylindrical wall portion, and a through-hole that penetrates the cylindrical wall portion, and that introduces outside air into the container body in response to the lifting and lowering operation of the holding member; an outside air introduction valve member having a valve body support portion and an outside air introduction valve body connected to the valve body support portion, the cylindrical wall portion has a valve holding portion that holds the valve body support portion and a seating portion on which the outside air introduction valve body is seated, The outside air introduction valve body prevents the contents from leaking into the outside air introduction path when the contents are ejected in the inverted position by sitting on the seating portion, and allows the outside air to be introduced into the container body by moving away from the seating portion when the outside air is introduced through the outside air introduction path.

2. the valve body support portion is cylindrical and has an axis extending in a radial direction of the cylindrical wall portion, an outer peripheral surface of the cylindrical wall portion has a holding recess into which the valve body support portion is fitted and held; The dispenser according to claim 1 , wherein the outside air introduction valve body extends from the valve body support portion radially inward of the valve body support portion.

3. the outside air introduction valve body has a through hole that passes through the outside air introduction valve body on the axis of the valve body support part, The discharger according to claim 2 , wherein the seating portion is seated on an outer peripheral edge of the through hole of the outside air introduction valve body.

4. the cylindrical wall portion has a protrusion portion that is provided adjacent to the through hole and protrudes radially outward from the cylindrical wall portion on the axis of the valve body support portion, 4. The dispenser according to claim 3, wherein the protrusion has a reduced diameter portion that reduces in diameter toward a tip end of the protrusion to form the seating portion, and a tip convex portion that protrudes from the reduced diameter portion toward the tip end and enters the through hole.

5. The mounting cap has an annular top wall, an outer peripheral wall portion extending downward from the outer peripheral edge portion of the top wall around the entire circumference, a female screw portion provided on the inner peripheral surface of the outer peripheral wall portion and screwed into the outer peripheral surface of the mouth portion, a seal tube extending downward from the top wall and in close contact with the inner peripheral surface of the mouth portion, and a fitting retaining portion provided on the inner peripheral edge portion of the top wall, The dispenser according to claim 1 , wherein the extension portion is held by fitting into the fitting-holding portion.

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