Pump dispenser, discharge container and discharge container article filled with contents

Abstract

A pump dispenser includes: a cylinder; a piston that reciprocates in one direction within the cylinder; a discharge head provided at an upper portion of the piston and having a discharge flow path through which contents flow and a discharge port that discharges the contents; a base cover that is sealingly fitted to a container main body; a force applying member that is provided above the base cover and applies an upward force to the discharge head; a fitting member that is provided to the base cover and fixes a lower end of the discharge head by screwing; and a depressing portion that, when the discharge head is depressed, abuts against the piston and moves the piston downward, the discharge head being configured to be able to rotate in a set range in a circumferential direction with respect to the base cover before the screwing is released by rotating in the circumferential direction with respect to the base cover.

Description

Technical Field

[0001] The present invention relates to, for example, a pump dispenser for discharging liquid contents, a discharge container having the pump dispenser, and a discharge container article containing contents having contents stored in a container body of the discharge container. Background Technology

[0002] For example, Patent Document 1 discloses a pump distributor comprising: a cylinder portion; a piston portion that slides within the cylinder portion; a nozzle head mounted on the upper part of the piston portion; a cover portion for mounting the cylinder portion to a container body; a cylindrical seal portion mounted between the piston portion and the cylinder portion; and a spring positioned between the cylindrical seal portion and the nozzle head to eject the nozzle head upwards.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2009-208830 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In traditional discharge containers, components are tightly interlocked to prevent disassembly during use and transport, making it difficult for consumers to disassemble the parts. However, in recent years, due to increased environmental awareness, there is a desire to separate and dispose of metal load-bearing components and other synthetic resin parts separately.

[0008] According to the discharge container in Patent Document 1, in order to disassemble the spring that applies upward force to the nozzle head, it is desirable to be able to rotate the nozzle head and easily separate it. However, although the nozzle head has a free-rotating nozzle head, it is structurally difficult to disassemble and disassemble it while rotating the nozzle head.

[0009] The object of the present invention is to provide a pump dispenser that can balance ease of use and easy classification, for example, a pump dispenser for discharging liquid contents, a discharge container having the pump dispenser, and a discharge container article containing contents having contents stored in the container body of the discharge container.

[0010] Methods for solving problems

[0011] One embodiment of the pump dispenser of the present invention comprises: a cylinder; a piston that reciprocates in one direction within the cylinder; a discharge head disposed above the piston and having a discharge passage for the flow of contents and a discharge port for discharging the contents; a base cover that is sealed and fitted with a container body; a force-applying member disposed above the base cover and applying upward force to the discharge head; a locking member disposed on the base cover and threadedly engaging and fixing the lower end of the discharge head; and a pressing portion that abuts against the piston and moves the piston downward when the discharge head is pressed down, the discharge head being configured to be circumferentially rotatable relative to the base cover within a set range before the threaded engagement is released by circumferential rotation relative to the base cover.

[0012] Invention Effects

[0013] According to the present invention, it is possible to provide a pump dispenser for discharging liquid contents that can take into account both ease of use and ease of classification, a discharge container having the pump dispenser, and a discharge container article containing contents having contents stored in the container body of the discharge container. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view showing the structure of a discharge container according to one embodiment.

[0015] Figure 2A yes Figure 1 The diagram shows a cross-sectional view of the support portion including the central axis, and a view showing the engaging member as a perspective view.

[0016] Figure 2B yes Figure 2A An enlarged view of the location indicated by reference numeral 2B in the attached figure.

[0017] Figure 2C yes Figure 2A An enlarged view of the location indicated by reference numeral 2C in the attached figure.

[0018] Figure 2D It is a schematic diagram showing a protrusion with a support portion on the upper side and a locking member on the lower side.

[0019] Figure 3A It is a schematic cross-sectional view showing a series of actions of the pump body.

[0020] Figure 3B It means to continue Figure 3A A schematic cross-sectional view of a series of actions of the pump body.

[0021] Figure 3C It means to continue Figure 3BA schematic cross-sectional view of a series of actions of the pump body.

[0022] Figure 3D It means to continue Figure 3C A schematic cross-sectional view of a series of actions of the pump body.

[0023] Figure 4 It means in Figures 3A to 3D A schematic diagram of the state in which contents accumulate in the space formed by the engaging components, piston, and rod valve after a series of actions.

[0024] Figure 5 It means from Figure 4 A schematic diagram of the outer wall of the inner cylinder of the locking member after removing the protrusions. Detailed Implementation

[0025] use Figures 1 to 5 The discharge container 1 of the embodiment will be described.

[0026] Figure 1 This is a cross-sectional view showing the structure of the discharge container 1 according to the embodiment. In this embodiment, as... Figure 1 As shown, in the vertical direction, the container body 2 side of the discharge container 1 is positioned downwards, and the nozzle 30 side of the pump body 3 is positioned upwards. Additionally, in Figure 1 In the middle, take the central axis C of the discharge container 1.

[0027] Figure 2A yes Figure 1 The diagram shows a cross-sectional view of the support portion 20 including the central axis C, and a perspective view of the engaging member (pressing portion) 50. Figure 2B yes Figure 2A An enlarged view of the location indicated by reference numeral 2B in the attached figure. Figure 2C yes Figure 2A An enlarged view of the location indicated by reference numeral 2C in the attached figure. Figure 2D This is a schematic diagram showing the state in which the lower end 220a of the protrusion 220 of the support portion 20 is arranged on the upper side and the upper end 520a of the protrusion 520 of the engaging member 50 is arranged directly below it.

[0028] Figures 3A to 3D It is a schematic cross-sectional view showing a series of actions of the pump body 3, including the central axis C of the discharge container 1. Figure 3A It means Figure 1 The diagram shows a schematic arrangement of the support 20, nozzle 30, engaging member 50, cylinder 60, piston 70, and rod valve 80 when the nozzle 30 of the pump body 3 of the discharge container 1 is in the top dead center position. Figure 3B It means to Figure 1A schematic diagram of the arrangement of the support 20, nozzle 30, engaging member 50, cylinder 60, piston 70 and rod valve 80 when the nozzle 30 of the pump body 3 of the discharge container 1 is slightly lowered from the top dead center position. Figure 3C It means Figure 1 The diagram shows a schematic arrangement of the nozzle 30, engaging member 50, cylinder 60, piston 70, and rod valve 80 when the nozzle 30 of the pump body 3 of the discharge container 1 is in the bottom dead center position. Figure 3D It means Figure 1 A schematic diagram of the arrangement of the nozzle 30 of the pump body 3 of the discharge container 1, the engagement member 50, the cylinder 60, the piston 70, and the rod valve 80, at a position slightly raised from the bottom dead center.

[0029] Figure 4 It means in Figures 3A to 3D A schematic diagram of the state in which contents L are accumulated in the space formed by the engaging member 50, the piston 70 and the rod valve 80 after a series of actions.

[0030] Figure 5 It means from Figure 4 A schematic diagram of the outer peripheral surface (outer wall) of the inner cylinder 510 of the engaging member 50 after removing the protrusion 510c.

[0031] like Figure 1 As shown, the discharge container 1 includes a container body 2, a pump body (pump distributor) 3, and a pipe body 4. The discharge container 1 is a so-called hand pump, which uses the pump body 3 to draw up the contents L stored in the container body 2 through the pipe body 4 and discharges them to the outside, for example, in a liquid state or in a foamy state.

[0032] Content L is stored within container body 2. Content L may be a liquid containing surfactants, such as shampoo, hand soap, facial cleanser, or shaving cream. Pharmaceuticals may also be used as the liquid. Gel-like substances may also be used as the content L.

[0033] The container body 2 is, for example, a bottomed cylindrical shape. The container body 2 includes: a main body 12, which stores the contents L; and a fixing part 14, which has an opening protruding from a portion of the upper end of the main body 12. The fixing part 14 has an externally threaded portion 16 integrally formed with its outer peripheral surface.

[0034] The tube 4 is preferably a flexible tube. One end of the tube 4 is connected to the pump body 3, and the other end is a free end. The other end of the tube 4 is in contact with, for example, the bottom surface of the container body 2.

[0035] Furthermore, the container body 2 can be formed from materials such as metal, glass, ceramic, or resin. The container body 2 is preferably formed from a single material, the same as that used in the pump body 3 and the pipe body 4. Therefore, in this embodiment, the container body 2 is preferably formed from a resin material, the same as that used in the pump body 3 and the pipe body 4. In this embodiment, the container body 2, pump body 3, and pipe body 4 are preferably formed from polypropylene (PP) resin, for example.

[0036] like Figure 1 , Figures 3A to 3D As shown, the pump body (pump distributor) 3 includes a support (base cover) 20, a nozzle (discharge head) 30, a force-applying component 40, a locking component (pressing part) 50, a cylinder 60, a piston 70, and a rod valve 80.

[0037] The support portion 20, nozzle 30, engaging member 50, cylinder 60, piston 70, and rod valve 80 are preferably formed of resin material. The force-applying member 40 is formed of metal material, for example. In this embodiment, the support portion 20, nozzle 30, engaging member 50, cylinder 60, piston 70, and rod valve 80 are preferably formed of a so-called single material based on polypropylene (PP) resin, for example. Furthermore, the stiffness of these components, or the stiffness of parts thereof, is appropriately set according to each component and its portion.

[0038] Furthermore, the support 20, nozzle 30, engaging member 50, cylinder 60, and rod valve 80 may be appropriately formed to be rigid, and the piston 70 may be formed to be more flexible than the support 20, nozzle 30, engaging member 50, cylinder 60, and rod valve 80, depending on the components.

[0039] In this embodiment, the support 20, the force-applying member 40, the engaging member 50, the cylinder 60, the piston 70, and the rod valve 80 are preferably formed in a spiral configuration. Figure 1 The central axis C shown is rotationally symmetrical or approximately rotationally symmetrical about the axis. Furthermore, as long as the portion of the support 20 that connects to each component is rotationally symmetrical or approximately rotationally symmetrical about the central axis C, the appearance of the support 20, such as the shoulder 206 described later, may not be rotationally symmetrical or approximately rotationally symmetrical about the central axis C. For example, the appearance of the shoulder 206 of the support 20 can be shaped to allow the user to easily hold the container body 2 and easily rotate the support 20 relative to the container body 2.

[0040] The support portion 20 includes a nozzle guide tube 202, a container fixing tube 204, a shoulder portion 206, an inner cylindrical portion 208, a middle cylindrical portion 210, and a flange portion 212.

[0041] The nozzle guide tube 202, container fixing tube 204, shoulder 206, cylindrical part 208, and flange part 212 are integrally formed of resin material, for example. The nozzle guide tube 202, container fixing tube 204, shoulder 206, cylindrical part 208, container fixing tube 204, and flange part 212 are located coaxially on the central axis C.

[0042] The nozzle guide tube 202 is formed in a cylindrical shape. The nozzle guide tube 202 guides the nozzle 30 in a manner that allows the nozzle 30 disposed above it to move along the central axis C. The upper end 202a of the nozzle guide tube 202 can abut against the bottom 303 of the nozzle 30 (described later). For example, when the upper end 202a of the nozzle guide tube 202 of the support portion 20 abuts against the bottom 303 of the nozzle 30, the nozzle 30 is located at the lower dead center relative to the support portion 20.

[0043] The container fixing cylinder 204 has a larger diameter than the nozzle guide cylinder 202 and is capable of fixing the container body 2. That is, the support portion 20 is sealed and fitted with the container body 2 using the sealing member 610 described later. The inner circumferential surface of the container fixing cylinder 204 has an internal thread portion 20a that is fixed to the external thread portion 16 of the container body 2. The external thread portion 16 of the container body 2 and the internal thread portion 20a of the support portion 20 are preferably formed in a way that maintains a constant fastening relationship. Therefore, the positional relationship of the support portion 20 of the pump body 3 of the discharge container 1 when fixed to the container body 2 is preferably constant.

[0044] The shoulder 206 ensures continuity between the nozzle guide tube 202 and the container fixing tube 204. The shoulder 206 supports the cylinder body 60 in a fixed state.

[0045] The cylindrical portion 208 extends to the side opposite to the nozzle guide tube 202. The cylindrical portion 208 is cylindrical at the lower end of the nozzle guide tube 202 of the support portion 20.

[0046] The intermediate cylindrical portion 210 is disposed between the inner cylindrical portion 208 and the container fixing cylinder 204. The intermediate cylindrical portion 210, together with the container fixing cylinder 204 and the shoulder portion 206, supports the fixing portion (flange portion) 614 of the cylinder body 60, which will be described later.

[0047] The flange portion 212 protrudes radially inward from the boundary between the nozzle guide tube 202 and the cylindrical portion 208. The inner diameter of the flange portion 212 is larger than the outer diameter of the inner cylinder 302 of the nozzle 30, which will be described later.

[0048] The nozzle 30 can rotate relative to the support 20 within a circumferential range of 45° to 360°. To allow the nozzle 30 to rotate relative to the support 20 within this range, as follows... Figure 2A and Figure 2BAs shown, a protrusion (first protrusion) 220 is provided on the inner circumferential surface of the cylindrical portion 208 of the support portion 20 and the lower surface of the flange portion 212. One or more protrusions 220 of the support portion 20 are formed in the circumferential direction on the inner circumferential surface of the cylindrical portion 208.

[0049] When a support portion 20 protrusion 220 is formed in the circumferential direction on the inner circumferential surface of the cylindrical portion 208, by setting the protrusion (second protrusion) 520 of the engaging member 50 (described later) as one, the nozzle 30 can be rotated 360° in the circumferential direction relative to the support portion 20.

[0050] Furthermore, the protrusion 220 of the support portion 20 actually has a thickness in the circumferential direction, and the protrusion 520, described later, also has a thickness in the circumferential direction. Therefore, the nozzle 30 actually rotates less than approximately 360° circumferentially relative to the support portion 20. In explaining the circumferential angle of the protrusion 220, the circumferential thickness of the protrusions 220 and 520 is ignored, and the explanation is based on the angle along the central axis of the protrusions 220 and 520 radially from the central axis C of the discharge container 1. The same applies to the protrusions 510a, 510c, and 512a, described later.

[0051] When multiple support portions 20 are formed by protrusions 220, they are preferably formed at predetermined angles in the circumferential direction of the inner circumferential surface of the cylindrical portion 208. When there are two protrusions 220, they are preferably formed at a distance of 180°, for example.

[0052] When the nozzle 30 is rotated 45° circumferentially relative to the support portion 20, the protrusions 220 of the support portion 20 are provided at a distance of at least 45°. In this case, the protrusions 520 of the engaging member 50 are also provided at a distance of at least 45°. If the distance between any one of the protrusions 220 and 520 is 45°, the nozzle 30 can be rotated 45° circumferentially relative to the support portion 20.

[0053] The protrusion 220 of the support portion 20 interferes with the protrusion 520 of the engaging member 50 (described later) during the rotational operation of the nozzle 30, thereby restricting the circumferential rotation of the nozzle 30 relative to the support portion 20.

[0054] In this way, the nozzle 30 can rotate within a specified range in the circumferential direction relative to the support 20. Therefore, when using the discharge container 1 by hand, the direction of the nozzle 30 relative to the support 20 can be easily changed, and it is not necessary to re-hold or reposition the discharge container 1 during use, which is very convenient.

[0055] The lower end portion 220a of the protrusion 220 is formed such that when the protrusion 520 of the engaging member 50 (described later) moves and abuts against it in the vertical direction along the central axis C, it is difficult to maintain the abutment state between the support portion 20 and the engaging member 50, and the support portion 20 and the engaging member 50 are misaligned in the circumferential direction. For example, the shape of the lower end portion 220a of the protrusion 220 is preferably a shape that can vector transform the abutment force of the protrusion 520 of the engaging member 50 relative to the lower end portion 220a of the protrusion 220 in the circumferential direction. The lower end portion 220a of the protrusion 220 is preferably formed, for example, tapering towards the lower end. As an example, the lower end portion 220a of the protrusion 220 is preferably formed, for example, a conical shape that tapers towards the lower end. The lower end portion 220a of the protrusion 220 can be either an inclined surface or a curved surface.

[0056] Furthermore, the lower end portion 220a of the protrusion 220 is preferably inclined in the opposite direction to the upper end portion 520a of the protrusion 520 as it moves from the radially inner side toward the radially outer side (the inner circumferential surface of the cylindrical portion 208).

[0057] like Figure 1 , Figures 3A to 3D As shown, the nozzle 30 is disposed on the upper side of the support portion 20. The nozzle 30 has an inner cylinder 302, an outer cylinder 304 outside the inner cylinder 302, and a discharge cylinder 306 that is continuous with the upper end of the inner cylinder 302 and discharges fluid. The inner cylinder 302, the outer cylinder 304, and the discharge cylinder 306 are integrally formed of, for example, resin material.

[0058] The inner side of the inner cylinder 302 and the inner side of the discharge cylinder 306 are connected to form a discharge flow path 30a for the contents (foamy liquid or liquid) L to flow through. The distal end of the discharge cylinder 306 relative to the inner cylinder 302 forms a discharge outlet 306a for the contents.

[0059] The inner cylinder 302 and the outer cylinder 304 are concentric with respect to the central axis C. The inner cylinder 302 and the outer cylinder 304 reciprocate between a first position (normal position (top dead center position)) and a second position (pressing position (bottom dead center position)) in the vertical direction along the central axis C relative to the support portion 20.

[0060] The discharge cylinder 306 protrudes from the upper end of the inner cylinder 302 toward the side away from the central axis C, for example in a cylindrical shape.

[0061] An external thread 308 is formed on the outer side of the lower end of the inner cylinder 302 of the nozzle 30. The external thread 308 can be threaded into the internal thread 504 of the engaging member 50, which will be described later, through the inner side of the flange 212 of the support 20.

[0062] A mesh filter 310 is supported on the inner side of the lower end of the inner cylinder 302 of the nozzle 30. The mesh filter 310 is located on the flow path 30a. The mesh filter 310 has, for example, two separate meshes 310a and 310b. Liquids and gases pass through the meshes 310a and 310b of the mesh filter 310 on the flow path 30a, thereby easily causing the contents L to become foamy, and the foamy contents L is discharged from the discharge cylinder 306 of the flow path 30a. In addition, the mesh filter 310 is used to discharge the contents L as fine foam from the nozzle 30. Therefore, if it is not necessary to discharge the contents L as foam from the discharge container 1, the mesh filter 310 can be omitted, and the discharge flow path 30a can also be formed.

[0063] The force-applying member 40 uses a compression coil spring wound around the shaft. The inner diameter of the force-applying member 40, which is a compression coil spring, is larger than the outer diameter of the inner cylinder 302 of the nozzle 30. Furthermore, the outer diameter of the force-applying member 40, which is a compression coil spring, is smaller than the inner diameter of the outer cylinder 304 of the nozzle 30. The lower end 40a of the force-applying member 40 is supported by the flange 212 of the support portion 20, and the upper end 40b of the force-applying member 40 is supported by the bottom 303 between the inner cylinder 302 and the outer cylinder 304 of the nozzle 30. Therefore, the force-applying member 40 applies force to the nozzle 30 toward the top dead center.

[0064] Furthermore, the situation where the nozzle 30 is located at the upper dead point relative to the support portion 20 refers to the following state: the lower end 40a of the force-applying member 40 is located on the flange portion 212 of the support portion 20, the upper end 40b of the force-applying member 40 abuts against the bottom 303 of the nozzle 30, and no external force is applied to the nozzle 30 by the user or others in the state where the external thread portion 308 of the nozzle 30 is engaged with the internal thread portion 504 of the engaging member 50 (described later).

[0065] The engaging member 50 can move in and out along the central axis C relative to the cylindrical portion 208 below the flange portion 212 of the support portion 20.

[0066] like Figure 1 , Figures 3A to 3D As shown, the engaging member 50 has an upper cylindrical portion 502, an internal threaded portion 504, an engaging cylinder 506, a mixing chamber 508, an inner cylinder 510, and an outer cylinder (pressing portion) 512.

[0067] The upper cylindrical portion 502 is formed into a cylindrical shape and can be received from the lower side of the flange portion 212 within the cylindrical portion 208 of the support portion 20.

[0068] like Figure 2A and Figure 2C As shown, a protrusion 520 is provided on the outer peripheral surface of the upper cylindrical portion 502. The protrusion 520 can be a single piece on the outer peripheral surface of the upper cylindrical portion 502, or it can be formed at predetermined intervals in the circumferential direction. Figure 2AAs shown, in the engaging member 50, there may be one or more protrusions 520, so protrusions 520 indicated by solid lines and protrusions 520 indicated by dashed lines are depicted.

[0069] When multiple protrusions 520 are formed in the engaging member 50, as an example, it is preferable to form three protrusions spaced at 120° intervals or six protrusions spaced at 60° intervals on the outer peripheral surface of the upper cylindrical portion 502. When the number of protrusions 520 is large, it is preferable to form eight protrusions spaced at 45° intervals.

[0070] Preferably, the nozzle 30 can rotate more than 90° relative to the support portion 20. When there is only one protrusion 220 in the support portion 20, as an example, the protrusions 520 of the engaging member 50 are preferably formed on the outer peripheral surface of the upper cylindrical portion 502 at intervals of, for example, four at 90° intervals, three at 120° intervals, or two at 180° intervals. Alternatively, the protrusion 520 of the engaging member 50 may also be only one in the circumferential direction. In this case, the protrusions 220 of the support portion 20 may also be multiple in the circumferential direction. The number of protrusions 220 in the support portion 20 and the number of protrusions 520 in the engaging member 50 may be the same, or one may be more than the other.

[0071] Therefore, it is preferable that the nozzle 30 can rotate relative to the support portion 20 in a circumferential range of 45° or more and less than 360°, and the maximum range in which the nozzle 30 can rotate in the circumferential direction is preferably 90° or more and less than 360°.

[0072] When the nozzle 30 can rotate more than 90° relative to the support 20, for example in the carton packaging process during the production of a product (discharge container 1 or an article containing contents L in discharge container 1 (discharge container article containing contents) 1a), if the nozzles 30 of adjacent discharge containers 1 inside the carton interfere with each other, the position can be adjusted by rotating the nozzle 30. It is not necessary to remove the discharge container 1 from the carton together to adjust the orientation of the nozzle 30, thus preventing a decrease in carton packaging efficiency.

[0073] Furthermore, similarly, the upper end portion 520a of the protrusion 520 of the engaging member 50 and the lower end portion 220a of the protrusion 220 of the support portion 20 are preferably shaped to vectorically transform the abutment force of the upper end portion 520a of the protrusion 520 of the engaging member 50 relative to the lower end portion 220a of the protrusion 220 in the circumferential direction. The upper end portion 520a of the protrusion 520 is preferably formed, for example, tapering towards the upper end. As an example, the upper end portion 520a of the protrusion 520 is preferably formed, for example, a tapered shape that tapers towards the upper end. The upper end portion 520a of the protrusion 520 can be either an inclined surface or a curved surface.

[0074] In addition, such as Figure 2DAs shown, the upper end portion 520a of the protrusion 520 is also preferably inclined in the opposite direction to the lower end portion 220a of the protrusion 220, moving from the radially outer side towards the radially inner side (outer peripheral surface of the upper cylindrical portion 502). Figure 2D In the example shown, the lower end 220a of protrusion 220 is inclined in a manner that rises from the inside to the outside, and the upper end 520a of protrusion 520 is inclined in a manner that descends from the inside to the outside. Therefore, protrusions 220 and 520 are easily misaligned relative to each other in the circumferential direction.

[0075] In addition, Figures 2A to 2D In the example shown, the lower end portion 220a of the protrusion 220 of the support portion 20 and the upper end portion 520a of the protrusion 520 of the engaging member 50 are described as having shapes that allow for vector transformation of the mutual abutment force in the circumferential direction. Alternatively, at least one of the lower end portion 220a of the protrusion 220 of the support portion 20 and the upper end portion 520a of the protrusion 520 of the engaging member 50 may be formed in a conical shape, or both of the lower end portion 220a of the protrusion 220 of the support portion 20 and the upper end portion 520a of the protrusion 520 of the engaging member 50 may have shapes that allow for vector transformation of the mutual abutment force in the circumferential direction.

[0076] like Figure 1 , Figures 3A to 3D As shown, the internal thread portion 504 is provided on the inner circumferential surface of the upper cylindrical portion 502 and is screwed into the external thread portion 308 at the lower end of the inner cylinder 302 of the nozzle 30. In this embodiment, the tightening force when the internal thread portion 504 of the engaging member 50 is screwed into the external thread portion 308 of the inner cylinder 302 of the nozzle 30 is set such that it will not be released by the force of the protrusions 220, 520 abutting each other in the circumferential direction when the orientation of the nozzle 30 changes due to the rotation of the nozzle 30 relative to the support portion 20. Therefore, the nozzle 30 is configured to be able to rotate circumferentially relative to the support portion 20 within a set range before the thread engagement is released by rotating circumferentially relative to the support portion 20. The fastening force of the engagement between the internal thread 504 of the engaging member 50 and the external thread 308 of the inner cylinder 302 of the nozzle 30 is set such that it is released when the protrusions 220 and 520 abut against each other in the circumferential direction and the nozzle 30 is further rotated to increase the abutting force between the protrusions 220 and 520. It is envisioned that the fastening of the engagement between the internal thread 504 of the engaging member 50 and the external thread 308 of the inner cylinder 302 of the nozzle 30 would be released during the recycling or disposal of the pump body 3. Therefore, in the normal use of the discharge container 1, the fastening of the engagement between the internal thread 504 of the engaging member 50 and the external thread 308 of the inner cylinder 302 of the nozzle 30 is designed to ensure that it is not released.

[0077] The fitting sleeve 506 fits into the lower end of the mesh filter 310, which is located inside the internal thread portion 504. The fitting sleeve 506 is disposed between the outer peripheral surface of the lower end of the mesh filter 310 and the inner peripheral surface of the inner cylinder 302 of the nozzle 30.

[0078] A mixing chamber 508 is disposed below the inner side of the fitting cylinder 506. The mixing chamber 508 has: a first annular portion 532, which protrudes radially inward from the lower end of the fitting cylinder 506 and supports the mesh 310a at the lower end of the mesh filter 310 on its upper side; a recess 534, the inner diameter of which decreases downward from the first annular portion 532; and a second annular portion 536, disposed at the lower end of the recess 534. The opening diameter (inner diameter) of the second annular portion 536 is formed to be smaller than the outer diameter of the upper portion 802 of the rod valve 80.

[0079] The mixing chamber 508 is connected to the flow path 30a of the nozzle 30 on the upper side of the mixing chamber 508 through an opening formed by the first annular portion 532. In this embodiment, the mixing chamber 508 is connected to the mesh filter 310 directly above the mixing chamber 508.

[0080] The inner cylinder 510 is formed in a cylindrical shape below the mixing chamber 508. The upper portion 802 of the rod-shaped valve 80 (described later) is fitted into the inner cylinder 510. The inner cylinder 510 has a plurality of protrusions 510a on its inner circumferential surface at predetermined intervals, for example. In other words, protrusions 510a are provided on the wall surface of the engaging member 50 facing the internal passage 953 (described later). Preferably, there are three or more protrusions 510a. The shape and size of each protrusion 510a are preferably the same. In this embodiment, four protrusions 510a are formed at 90° intervals in the circumferential direction of the inner cylinder 510. Furthermore, the upper portion 802 of the rod-shaped valve 80 is fitted into the plurality of protrusions 510a. The plurality of protrusions 510a restrict the upper portion of the rod-shaped valve 80 from moving to a position higher than a predetermined position. Furthermore, the gap between the protrusions 510a with a predetermined circumferential spacing in the inner cylinder 510 and the outer peripheral surface of the upper part 802 of the rod valve 80 is used as a flow path for liquids and gases.

[0081] The inner cylinder 510 of the engaging member 50 has a plurality of protrusions 510c on its outer circumferential surface at predetermined intervals, for example. Preferably, there are three or more protrusions 510c. The shape and size of each protrusion 510c are preferably identical. In this embodiment, six protrusions 510c are formed at 60° intervals in the circumferential direction of the inner cylinder 510.

[0082] The protrusions 510a and 510c of the inner cylinder 510 of the engaging member 50 divide the air passages 953 and 973 into multiple parts in the circumferential direction. These protrusions 510a and 510c of the inner cylinder 510 have the function of narrowing the air passages 953 and 973 respectively, causing the air passing through the air passages 953 and 973 to flow violently and merge with the contents L.

[0083] The outer cylinder 512 is located outside the inner cylinder 510 and can contact and separate from the air piston 702, which will be described later.

[0084] The outer cylinder 512 has a plurality of protrusions 512a on its inner circumferential surface at, for example, predetermined intervals. Preferably, there are three or more protrusions 512a. The shape and size of each protrusion 512a are preferably identical. In this embodiment, six protrusions 512a are formed at 60° intervals in the circumferential direction of the outer cylinder 512. Furthermore, the plurality of protrusions 512a can contact the outer circumferential surface of the inner cylinder 716 of the piston 70 to suppress vibration of the inner cylinder 716 and guide it so that the central axis of the piston 70 is aligned with the central axis C of the engaging member 50.

[0085] The lower end portion (outer pressing portion) 513 of the outer peripheral side of the outer cylinder 512 can be separated from the upper side from the second inclined portion (pressed portion) 744 of the piston head 712 of the piston 70 (described later). That is, the engaging member 50 has a lower end portion 513 of the outer peripheral side of the outer cylinder 512 that abuts against the second inclined portion 744 of the piston head 712. The lower end portion 513 of the outer peripheral side of the outer cylinder 512 is formed such that the abutment surface with the second inclined portion 744 of the piston head 712 is along the inclined direction. The lower end portion 513 of the outer peripheral side of the outer cylinder 512 is preferably chamfered, for example. In other words, the lower end portion 513 of the outer peripheral side of the outer cylinder 512 is formed such that the plate thickness decreases towards the direction of contact with the second inclined portion (pressed portion) 744 of the piston head 712. The chamfering of the lower end portion 513 of the outer peripheral side of the outer cylinder 512 here is in Figures 3A to 3D The cross-section shown, including the central axis C of the discharge container 1, is depicted as a curve bulging outwards, but it is also preferred to be... Figures 3A to 3D The cross-section shown is formed in a straight line. Therefore, when the lower end 513 on the outer periphery of the outer cylinder 512 contacts the second inclined portion 744 of the piston 70, the lower end 513 of the outer cylinder 512 is elastically deformed to seal the vent passage 901.

[0086] Furthermore, in this embodiment, the engaging member 50 is not a structure in which the lower end 513 of the outer peripheral side of the outer cylinder 512 is pressed into the second inclined portion 744 of the piston 70, which serves as the valve for opening and closing the intake and exhaust passages. Instead, it is a structure in which the member abuts against the piston while following the inclination of the second inclined portion 744. Therefore, by suppressing the impact between the components caused by the abutment between the lower end 513 of the outer peripheral side of the engaging member 50 and the second inclined portion 744 of the piston 70, wear between the lower end 513 of the outer peripheral side of the engaging member 50 and the second inclined portion 744 of the piston 70 can be suppressed. On the other hand, the lower end 513 of the outer peripheral side of the engaging member 50 and the second inclined portion 744 of the piston 70 can abut tightly while cutting off the communication between the cylinder 60 and the upper (outside) of the air piston 702, thus maintaining the discharge operation of the pump body 3 well.

[0087] Furthermore, even with repeated use of the pump body 3, the second inclined portion 744 of the piston 70, which serves as the valve for opening and closing the intake and exhaust passages, can suppress deformation caused by pressing the lower end 513 on the outer periphery side of the outer cylinder 512, making it less prone to permanent deformation and suppressing malfunctions in the operation of the pump body 3.

[0088] like Figure 1 , Figure 3A as well as Figure 3B As shown, the cylinder body 60 is supported on the support portion 20. The cylinder body 60 is generally cylindrical. The cylinder body 60 is integrally molded from, for example, resin material. The cylinder body 60 includes a first cylinder 602, a second cylinder 604 having an inner circumferential surface with a smaller diameter than the inner circumferential surface of the first cylinder 602, a mounting cylinder 606 having an inner circumferential surface with a smaller diameter than the inner circumferential surface of the second cylinder 604 and for mounting the pipe body 4, a spherical valve core 608, and a seal 610. The axes of the first cylinder 602, the second cylinder 604, and the mounting cylinder 606 are aligned with the central axis C of the support portion 20.

[0089] The first cylinder 602 has a first sliding portion 612 with a constant inner diameter, so that the air piston 702 of the piston 70 (described later) can slide.

[0090] The first cylinder 602 has a fixing part 614 at its upper end, which is supported by the shoulder 206 of the support part 20. The fixing part 614 is located above the first sliding part 612. The fixing part 614 is supported by the shoulder 206 of the support part 20, for example, by fitting together. An annular sealing member 610 is provided on the lower side of the fixing part 614. The sealing member 610 is sandwiched between the upper end of the fixing part 14 of the container body 2 and the fixing part 614 of the support part 20.

[0091] The first cylinder 602 has a first annular portion 616 at its lower end, which is continuous with the second cylinder 604. The first annular portion 616 is located below the first sliding portion 612.

[0092] The second cylinder 604 has a second sliding portion 622 with a constant inner diameter, which is movable along the central axis C by the liquid piston 70 (described later), and a second annular portion 624 that connects the second sliding portion 622 to the mounting cylinder 606. The second annular portion 624 has a valve seat 624a with a spherical valve core (sphere) 608. The valve seat 624a is formed as an annular surface.

[0093] The tube 4 is inserted into and fixed to the mounting cylinder 606. The length of the tube 4 is adjusted according to its distance from the bottom of the container body 2.

[0094] like Figure 1 , Figures 3A to 3D As shown, piston 70 is supported on the outer periphery of rod-shaped valve 80 and disposed within support portion 20 and cylinder body 60. Piston 70 is integrally molded from resin material. Figures 3A to 3D As shown, piston 70 has an air piston 702 and a liquid piston 704. Piston 70 is capable of reciprocating in one direction within cylinder 60.

[0095] like Figure 1 , Figures 3A to 3D As shown, the axis of the air piston 702 and the axis of the liquid piston 704 are aligned with the central axis C.

[0096] The air piston 702 includes a piston head 712, an annular main body 714 that is integral with the piston head 712 on the outer periphery of the piston head 712 and slides on the inner peripheral surface of the cylinder 60, an inner cylinder 716 disposed on the inner side of the piston head 712, an annular valve core 718 disposed on the inner cylinder 716, and a plurality of through holes 720 disposed between the piston head 712 and the inner cylinder 716 and adjacent to the outer peripheral surface of the inner cylinder 716.

[0097] The piston head 712 is divided vertically within the cylinder 60. An air chamber 632 is formed within the cylinder 60 below the piston head 712 and outside the liquid piston 704.

[0098] The piston head 712 has an annular protrusion 722 protruding upward between the inner side of the main body 714 and the outer side of the inner cylinder 716. The protrusion 722 of the piston head 712 has an outer inclined portion 732 with its outer peripheral surface facing radially outward, an inner inclined portion 734 with its inner peripheral surface facing radially inward, and an annular connecting portion 736 connecting the outer inclined portion 732 and the inner inclined portion 734. In order to maintain the state of contact between the protrusion 722 and the inner peripheral surface 612a of the first sliding portion 612 of the cylinder 60, the main body 714 is disposed in the first sliding portion 612 of the cylinder 60 in a radially inward contracted state.

[0099] The outer inclined portion 732 faces the inner peripheral surface of the main body portion 714. The normal of the outer peripheral surface of the outer inclined portion 732 (the surface of the piston 70 viewed from above) is preferably oriented towards the horizontal direction or towards the upward direction compared to the horizontal direction.

[0100] The inner inclined portion 734 is opposite to the outer peripheral surface of the inner cylinder 716. The inner inclined portion 734 is inclined inward (toward the outer peripheral surface of the inner cylinder 716) as it moves downward. The normal of the inner peripheral surface of the inner inclined portion 734 (the surface of the piston 70 viewed from above) preferably faces upward compared to the horizontal direction.

[0101] Furthermore, the inner inclined portion 734 includes a first inclined portion 742 on the side of the connecting portion 736 and a second inclined portion (pressed-down portion) 744 on the side of the inner cylinder 716.

[0102] The first inclined portion 742 is inclined inward (towards the outer peripheral surface of the inner cylinder 716) as it faces downward. The second inclined portion 744 is integrally formed with the lower end of the first inclined portion 742. The second inclined portion 744 is formed in the shape of a mortar, inclined inward (towards the outer peripheral surface of the inner cylinder 716) as it faces downward. When the nozzle 30 is pressed down, the lower end 513 of the outer cylinder 512 of the engaging member 50 abuts against the second inclined portion 744. Here, we consider the side of the outer cylinder 512 on which the engaging member 50 is disposed in the first inclined portion 742 and the second inclined portion 744. The inclination angle of the first inclined portion 742 is larger than the inclination angle of the second inclined portion 744. That is, the inclination angle of the first inclined portion 742 is closer to the direction along the central axis C than the inclination angle of the second inclined portion 744. The inclination angle of the second inclined portion 744 is preferably close to the horizontal direction orthogonal to the central axis C. In other words, the angle between the outer peripheral surface of the inner cylinder 716 of the piston 70 and the second inclined portion 744 is larger than the angle between the outer peripheral surface of the inner cylinder 716 and the first inclined portion 742.

[0103] Furthermore, considering the side of the second inclined portion 744 that abuts against the lower end 513 of the outer cylinder 512 of the engaging member 50, along... Figures 3A to 3D The portion shown is a cross-section. The part connecting the outer peripheral surface of the inner cylinder 716 of the piston 70 or the through hole 720 to the first inclined portion 742 is formed as a generally straight line. The part connecting the outer peripheral surface of the inner cylinder 716 of the piston 70 or the through hole 720 to the first inclined portion 742 can be an upwardly convex curve or a downwardly convex curve. Furthermore, the second inclined portion 744 is formed into a mortar shape by converging such a straight line, an upwardly convex curve, or a downwardly convex curve. In short, it is sufficient as long as the lower end 513 of the outer cylinder 512 of the engaging member 50 can stably abut and separate from the second inclined portion 744.

[0104] Furthermore, in this embodiment, the case where the inner inclined portion 734 of the piston 70 has two inclined portions 742, 744 is described. However, it is also possible for the two inclined portions 742, 744 to be formed into a curved surface without boundaries from the connecting portion 736 toward the lower end of the inner cylinder 716. In this case, it is also preferable that the relationship between the inclined portions 742, 744 and the lower end of the inner cylinder 716 from the connecting portion 736 is similarly close to a horizontal position orthogonal to the central axis C.

[0105] In this embodiment, when the piston 70 moves up and down relative to the support portion 20 along the central axis C using the engaging member 50 or the rod valve 80, the lower end 513 of the outer cylinder 512 of the engaging member 50 abuts against the inner inclined portion 734. At this time, compared to when the lower end 513 of the outer cylinder 512 of the engaging member 50 abuts against the first inclined portion 742, when it abuts against the second inclined portion 744, the piston head 712 is more easily subjected to downward pressing pressure from the lower end 513 of the outer cylinder 512 of the engaging member 50. Therefore, when the nozzle 30 is pressed down to press down the engaging member 50, it is easier to apply downward pressing pressure to the piston 70 with a shorter stroke using the lower end 513 of the outer cylinder 512 of the engaging member 50. Furthermore, in this embodiment, the lower end 513 of the outer cylinder 512 of the engaging member 50 is arranged to abut against the second inclined portion 744.

[0106] The inner inclined portion 734 is formed to be harder than the lower end portion 513 of the outer cylinder 512 of the engaging member 50. Therefore, when the lower end portion 513 of the outer cylinder 512 of the engaging member 50 abuts against the second inclined portion 744 of the inner inclined portion 734, the lower end portion 513 of the outer cylinder 512 of the engaging member 50 elastically deforms more than the second inclined portion 744, and continues to abut against the second inclined portion 744 to cut off the flow of fluid between the inner and outer sides of the outer cylinder 512 of the engaging member 50.

[0107] Furthermore, the hardness of the inner inclined portion 734 can be the same as the hardness of the lower end portion 513 of the outer cylinder 512 of the engaging member 50, or it can be softer than the hardness of the lower end portion 513 of the outer cylinder 512 of the engaging member 50.

[0108] The connecting portion 736 is located above the upper end 716a of the inner cylinder 716 of the piston 70. The connecting portion 736 can contact and separate from the lower end 208a of the inner cylindrical portion 208 of the support portion 20. Therefore, the uppermost position of the piston 70 is set such that the connecting portion 736 of the piston 70 abuts against the lower end 208a of the inner cylindrical portion 208 of the support portion 20.

[0109] As the air piston 702 moves along the central axis C, the piston head 712 causes a change in the volume of the air chamber 632 and the liquid chamber 634.

[0110] As the air piston 702 moves along the central axis C, the main body 714 slides on the inner circumferential surface 612a of the first sliding portion 612 of the cylinder 60. The main body 714 is formed in an arch shape, with the outer diameter of the upper and lower ends of the surface facing the inner circumferential surface 612a of the first sliding portion 612 being larger than the outer diameter of the portion between the upper and lower ends. When the main body 714 contacts the inner circumferential surface 612a of the first sliding portion 612 of the cylinder 60, it elastically deforms, changing the arch shape while maintaining contact with the inner circumferential surface 612a of the first sliding portion 612 of the cylinder 60, thus preventing excessive sliding resistance.

[0111] The inner cylinder 716 is positioned between the inner cylinder 510 and the outer cylinder 512 of the engaging member 50.

[0112] The annular valve core 718 is formed in an annular shape on the inner circumferential surface of the lower end of the inner cylinder 716, and can contact and separate relative to the outer circumferential surface of the conical portion 812 of the lower part 804 of the rod valve 80. The annular valve core 718 is formed to protrude radially inward and upward from the lower end of the inner cylinder 716 along the outer circumferential surface of the conical portion 812 of the rod valve 80.

[0113] Multiple through holes 720 are formed near the outer peripheral surface of the inner cylinder 716 in a vertically penetrating manner between the outer peripheral surface of the inner cylinder 716 and the lower end 513 of the outer cylinder 512 of the engaging member 50. The multiple through holes 720 are preferably formed circumferentially at predetermined intervals near the outer peripheral surface of the inner cylinder 716.

[0114] The liquid piston 704 is formed as a cylindrical body. The axis of the liquid piston 704 is aligned with the central axis C. The liquid piston 704 is capable of sliding on the inner circumferential surface of the second sliding portion 622 of the second cylinder 604 of the cylinder body 60. The liquid piston 704, together with the cylinder body 60 and the air piston 702, forms part of the air chamber 632. Additionally, the liquid piston 704 forms part of both the cylinder body 60 and the liquid chamber 634. The liquid piston 704 moves along the central axis C in conjunction with the air piston 702 as the nozzle 30 reciprocates, causing changes in the volume of the air chamber 632 and the liquid chamber 634.

[0115] The rod-shaped valve 80 is formed as a bottomed cylindrical shape that is closed at the top and open at the bottom. The upper part 802 of the rod-shaped valve 80 is formed as a rod with a substantially constant outer diameter. The upper part 802 of the rod-shaped valve 80 is engaged with a plurality of protrusions 510a of the inner cylinder 510 of the engaging member 50. Furthermore, the plurality of protrusions 510a of the inner cylinder 510 of the engaging member 50 are preferably provided at predetermined intervals in the circumferential direction. Therefore, a flow path for liquid and air is formed between the outer peripheral surface of the upper part 802 of the rod-shaped valve 80 and the inner cylinder 510 of the engaging member 50.

[0116] like Figure 1 , Figures 3A to 3DAs shown, the rod valve 80 has an upper part 802 that is generally cylindrical in shape and a lower part 804 whose outer diameter increases in a funnel shape compared to the upper part 802.

[0117] On the outer peripheral surface of the upper portion 802 of the rod valve 80, an annular groove 802a is formed around the central axis C. On the inner cylinder 510 of the engaging member 50, multiple protrusions 510a have annular protrusions 510b that engage with the groove 802a. Therefore, the rod valve 80 is engaged in a predetermined position relative to the engaging member 50 within the inner cylinder 510.

[0118] Furthermore, the outer diameter of the upper part 802 of the rod valve 80 is smaller than the inner diameter of the liquid piston 704, and also smaller than the inner diameter of the valve core 718 of the piston 70.

[0119] The lower part 804 of the rod valve 80 is formed with an outer diameter larger than that of the upper part 802. The outer peripheral surface of the lower part 804 has a conical part 812 whose outer diameter increases from the side of the upper part 802 toward the lower end of the rod valve 80.

[0120] The outer diameter of the conical portion 812 is formed to be smaller than the inner diameter of the liquid piston 704 and larger than the inner diameter of the valve core 718 of the piston 70.

[0121] Next, the assembly method of assembling the pump body 3 with such a configuration will be briefly explained.

[0122] When assembling the pump body 3, prepare the support 20, nozzle 30, force-applying component 40, locking component 50, cylinder 60, piston 70, and rod valve 80.

[0123] For example, with the lower end 40a of the force-applying member 40 positioned on the flange 212 of the support portion 20, the force-applying member 40 is positioned between the outer peripheral surface of the inner cylinder 302 of the nozzle 30 and the nozzle guide cylinder 202 of the support portion 20. In this state, the nozzle 30 is pressed down relative to the support portion 20 against the force of the force-applying member 40.

[0124] The internal thread 504 of the engaging member 50 is screwed into the external thread 308 of the outer peripheral surface of the lower end of the nozzle 30.

[0125] Furthermore, the inner cylinder 716 of the piston 70 is positioned between the inner cylinder 510 and the outer cylinder 512 of the engaging member 50, and the upper part 802 of the rod-shaped valve 80 is engaged with the protrusion 510a of the inner cylinder 510 of the engaging member 50. At this time, the groove 802a of the rod-shaped valve 80 is engaged with the annular protrusion 510b of the protrusion 510a of the inner cylinder 510 of the engaging member 50.

[0126] At this time, the groove 802a on the outer peripheral surface of the upper part 802 of the rod valve 80 engages with the protrusion 510b of the protrusion 510a of the inner cylinder 510 of the engaging member 50, and the valve core 718 of the piston 70 is supported on the outer peripheral surface of the conical part 812 of the rod valve 80.

[0127] Furthermore, the liquid piston 704 of the piston 70 is disposed in the second cylinder 604 of the cylinder body 60, and the fixing part 614 of the cylinder body 60 is fitted and fixed in the shoulder 206 of the support part 20.

[0128] Thus, pump body 3 is manufactured.

[0129] Additionally, the tube 4 is fixed to the mounting sleeve 606 of the cylinder 60.

[0130] Furthermore, the external threaded portion 16 of the container body 2, which contains, for example, a surfactant or other substance L, is fixed to the internal threaded portion 20a of the support portion 20 of the pump body 3 thus formed, thereby manufacturing the pump body 3. Figure 1 The discharge container 1 is shown.

[0131] Next, the function of the discharge container 1, which includes the pump body 3 configured in this way, will be explained.

[0132] like Figure 1 As shown, the tube 4 is inserted into and fixed to the mounting sleeve 606 of the pump body 3. The internal thread 20a of the container fixing sleeve 204 of the support part 20 is fastened to the external thread 16 of the fixing part 14 of the container body 2 to assemble the discharge container 1. Here, an example is described in which the container body 2 stores liquid contents L and the contents L are present in the liquid chamber 634, and the foamy contents L are discharged from the nozzle 30 of the pump body 3.

[0133] Furthermore, the internal thread 20a of the support portion 20 is fastened to the external thread 16 of the fixing portion 14 of the container body 2 in a predetermined state. That is, the protrusion 220 of the support portion 20 is positioned relative to the container body 2 at a predetermined position. In addition, the lowermost part of the container body 2 is supported on a horizontal plane.

[0134] First, when the nozzle 30 is rotated relative to the support 20 without being pressed down, it rotates until one of the protrusions 520 of the engaging member 50, which is integrated with the nozzle 30 by screwing, abuts against the protrusion 220 of the support 20. That is, during the rotation operation of the nozzle 30 relative to the support 20, the protrusion 220 of the support 20 and the protrusion 520 of the engaging member 50 interfere when the nozzle 30 is at its top dead center. Therefore, the discharge port 306a of the nozzle 30 can be oriented in a desired direction relative to the support 20 within a specified range. For example, by rotating the discharge tube 306 of the nozzle 30 in an appropriate direction relative to the support 20, space in the discharge container 1 can be saved during transportation, and the discharge port 306a of the nozzle 30 can be oriented in the user's desired direction during use.

[0135] use Figure 1 as well as Figures 3A to 3D The series of actions of the nozzle 30 of the pump body 3 from the top dead center through the bottom dead center back to the top dead center will be explained.

[0136] Figure 1 as well as Figure 3A The case where the nozzle 30 is located at the upper limit position (top dead center) relative to the support portion 20 means that the force-applying member 40 is used to position the nozzle 30 at its highest position relative to the support portion 20. The connecting portion 736 of the piston head 712 abuts against the lower end 208a of the cylindrical portion 208 of the support portion 20. The valve core 718 of the piston head 712 abuts against the outer peripheral surface of the conical portion 812 of the rod valve 80. Therefore, it is possible to prevent liquid from moving from the liquid piston 704 to the upper side of the valve core 718, and to prevent liquid located on the upper side of the valve core 718 from flowing towards the liquid piston 704. The lower end 513 of the outer cylinder 512 of the engaging member 50 separates upward relative to the second inclined portion 744 of the piston head 712. Therefore, the upper side of the piston head 712 communicates with the air chamber 632. Furthermore, a ventilation passage 901 is formed between the outer peripheral surface of the outer cylinder 512 of the engaging member 50 and the inner inclined portion 734 of the piston 70, communicating with the air chamber 632 through a through hole 720. The ventilation passage 901 is used to draw air into the air chamber 632 from the outside.

[0137] When the user overcomes the force exerted by the force-applying component 40 and presses slightly downward relative to the support portion 20 along the central axis C... Figure 3A The nozzle 30 at the top dead center is shown and moved to... Figure 3BAt the indicated position, the integrated nozzle 30, engaging member 50, and rod valve 80 descend relative to the support portion 20. Meanwhile, the piston 70 maintains a vertical gap between the annular bottom 511 between the inner cylinder 510 and outer cylinder 512 of the engaging member 50 and the upper end 716a of the inner cylinder 716 of the piston 70. Furthermore, friction occurs between the piston 70 and the inner circumferential surface 612a of the first sliding portion 612 of the cylinder 60 and the main body 714. Therefore, the piston 70 maintains the same position as at top dead center. Consequently, the connecting portion 736 of the piston head 712 abuts against the lower end 208a of the cylindrical portion 208 of the support portion 20. Moreover, the rod valve 80 descends relative to the valve core 718 of the piston 70, and the valve core 718 separates from the conical portion 812 of the rod valve 80. Therefore, a flow path for the contents L is formed between the liquid chamber 634 and the mixing chamber 508. In addition, the lower end 513 of the outer cylinder 512 of the engaging member 50 abuts against the second inclined portion 744 of the piston 70, and the lower end 513 of the outer cylinder 512 is elastically deformed, thereby forming a ring shape that tightly adheres to the second inclined portion 744 of the piston 70, thus cutting off the flow of air to the air chamber 632 on the lower side of the air piston 702.

[0138] When in this state from Figure 3B The position shown is to Figure 3C As the user continues to press the nozzle 30 further downward against the force applied by the force-applying member 40 up to the lower stop position shown, the integrated nozzle 30, engaging member 50, and rod valve 80 descend relative to the support portion 20, and the piston 70 is pressed downward with the lower end 513 of the outer cylinder 512 of the engaging member 50 abutting against the second inclined portion 744 of the air piston 702. Therefore, the air piston 702 and the liquid piston 704 of the piston 70 move downward along the central axis C.

[0139] Furthermore, the user is configured to overcome the force exerted by the force-applying member 40 and press down the nozzle 30 until the bottom 303 of the nozzle 30 abuts against the upper end 202a of the nozzle guide tube 202 of the support portion 20. At this time, the nozzle 30 is located at the lower dead center.

[0140] Furthermore, when the nozzle 30 is at its bottom dead center, during rotation of the nozzle 30 relative to the support 20, the protrusion 220 of the support 20 does not interfere with the protrusion 520 of the engaging member 50. This is because the engaging member 50 is not present in the horizontal position of the support 20. Therefore, when the nozzle 30 is at its bottom dead center, the nozzle 30 can be rotated relative to the support 20 by, for example, more than 360°.

[0141] From nozzle 30 Figure 3B The location shown is reached Figure 3CDuring the period up to the bottom dead center, the lower end 513 of the outer cylinder 512 of the engaging member 50 remains in close contact with the second inclined portion 744 of the piston 70. Therefore, the intake of air into the air chamber 632 of the cylinder 60 below the air piston 702 is cut off. In this state, when the air piston 702 descends, the air pressure in the air chamber 632 of the cylinder 60 increases. Therefore, the air chamber 632 of the air piston 702 and the liquid chamber 634 of the liquid piston 704 are pressurized, and the ball valve core 608 is also pressurized downwards.

[0142] Furthermore, as the piston 70 moves downward, the outer peripheral surface of the conical portion 812 of the rod valve 80 remains separated from the valve core 718 of the piston 70 as it descends. Therefore, the contents L of the liquid piston 704 within the second cylinder 604 of the cylinder 60 enter the recess 534 of the mixing chamber 508 through the passage 951 between the inner peripheral surface of the liquid piston 704, between the valve core 718 of the piston 70 and the outer peripheral surface of the conical portion 812 of the lower portion 804 of the rod valve 80, the passage 952 between the valve core 718 of the piston 70 and the upper portion 802 of the rod valve 80, the internal passage 953 between the protrusion 510a of the inner cylinder 510 of the engaging member 50 and the outer peripheral surface of the upper portion 802 of the rod valve 80, and the opening 536a of the annular portion 536 of the engaging member 50.

[0143] On the other hand, air A passes through air passage 970. Air passage 970 is provided between engaging member 50 and piston 70. When nozzle 30 is pressed down, air in air chamber 632 is compressed and flows into mixing chamber 508. Air A enters the recess 534 of the mixing chamber 508 from the air chamber 632 through the through hole 720, the outer passage 971 between the inner circumferential surface of the outer cylinder 512 of the engaging member 50 and the inner cylinder 716 of the piston 70, the connecting passage 972 between the bottom 511 of the engaging member 50 and the upper end 716a of the inner cylinder 716 of the piston 70, the inner passage 973 between the outer circumferential surface of the inner cylinder 510 of the engaging member 50 and the inner circumferential surface of the inner cylinder 716 of the piston 70, the passage 974 between the lower end of the inner cylinder 510 of the engaging member 50 and the upper part of the valve core 718 of the piston 70, the inner passage 953 between the protrusion 510a of the inner cylinder 510 of the engaging member 50 and the outer circumferential surface of the upper part 802 of the rod valve 80, and the opening 536a of the annular portion 536 of the engaging member 50. In addition, a connecting passage 972 is formed between the upper side of the inner cylinder 716 of the piston 70 and the engaging member 50, and connects the outer passage 971 with the inner passage 973.

[0144] Therefore, the internal passage 953 and the opening 536a of the annular portion 536 of the engaging member 50 become a common flow path for the contents L and the air A. Thus, the contents L mix with the air between the protrusion 510a of the inner cylinder 510 of the engaging member 50, the outer peripheral surface of the upper portion 802 of the rod valve 80, and in the mixing chamber 508. The contents L, after being mixed with air, pass through the mesh filter 310 in the discharge flow path 30a, thereby further refining the foam formed by the contents L and the air. Therefore, the contents L become foamy in the flow path 30a of the nozzle 30 and are discharged from the discharge port 306a of the discharge cylinder 306 of the nozzle 30.

[0145] Furthermore, after the nozzle 30 is pressed in to the lower dead center, when the user releases the nozzle 30, from Figure 3C Starting from the position shown, as Figure 3D As shown, the force applied by the force-applying member 40 causes the integrated nozzle 30, engaging member 50, and rod valve 80 to rise relative to the support portion 20. At this time, the lower end 513 of the outer cylinder 512 of the engaging member 50 separates from the second inclined portion 744 of the piston 70, allowing air from the gap between the flange portion 212 of the support portion 20 and the inner cylinder 302 of the nozzle 30 to be drawn into the air chamber 632 on the lower side of the piston head 712 through the gap (ventilation passage 901) between the lower end 513 of the outer cylinder 512 of the engaging member 50 and the second inclined portion 744 of the piston 70, and the through hole 720. At the same time, the ball valve core 608 moves upward relative to the valve seat 624a, and the contents L enter from the tube 4 into the cylinder 604 and the liquid piston 704.

[0146] Furthermore, the outer peripheral surface of the conical portion 812 of the rod valve 80 moves upward while maintaining contact with the valve core 718 of the piston 70. Therefore, the piston 70 rises, and the nozzle 30 returns to its original position. Figure 3A The top dead center is shown.

[0147] Furthermore, when the nozzle 30 moves from the lower dead center to the upper dead center, the upper end 520a of the protrusion 520 of the engaging member 50 (refer to...) Figure 2C and Figure 2D Sometimes it will interact with the lower end 220a of the protrusion 220 of the support portion 20 (see reference). Figure 2B and Figure 2DThe nozzle 30 and the locking member 50 rotate circumferentially. However, due to the force applied by the force-applying member 40 and the shapes of the ends 220a and 520a of the protrusions 220 and 520, the contact surfaces of the protrusions 220 and 520 are pushed apart from each other and misaligned in the circumferential direction. Furthermore, the protrusions 220 of the support portion 20 and 520 of the locking member 50 are misaligned in the circumferential direction. In addition, when the container body 2 is fixed to the support portion 20, the upper end 520a of the protrusion 520 of the locking member 50 usually rotates in a manner that is misaligned in the circumferential direction relative to the protrusions 220 of the support portion 20. Therefore, the nozzle 30 rotates together with the locking member 50 relative to the support portion 20. In this way, the nozzle 30 returns to the top dead center relative to the support portion 20.

[0148] When the nozzle 30 returns to its top dead center relative to the support 20 and remains stationary in the discharge container 1, as follows: Figure 4 As shown, for example, foam in the discharge path 30a of nozzle 30 flows as liquid (contents) L and accumulates in the space directly below the mixing chamber 508 after passing through the mesh filter 310. That is, the pump body 3 has a space for storing the contents L remaining in the discharge path 30a and mixing chamber 508 after the nozzle 30 is pressed down relative to the support 20. The volume of the space storing the contents L is greater than or equal to the volume of the contents L remaining in the discharge path 30a and mixing chamber 508.

[0149] In this embodiment, liquid (contents) L accumulates from the opening of the annular portion 536 of the mixing chamber 508 of the engaging member 50 in the internal passage 953 between the protrusions 510a of the inner cylinder 510 of the engaging member 50 and the outer peripheral surface of the upper portion 802 of the rod-shaped valve 80, the passage between the lower end of the inner cylinder 510 of the engaging member 50 and the upper portion of the valve core 718 of the piston 70, and the inner passage between the outer peripheral surface of the inner cylinder 510 of the engaging member 50 and the inner peripheral surface of the inner cylinder 716 of the piston 70. At this time, the liquid level of liquid L is allowed to reach the position of the upper end 716a of the inner cylinder 716 of the piston 70.

[0150] For example, by setting the volume of liquid that may remain in the discharge path 30a of the nozzle 30, including the mesh filter 310, to be below the combined volume of these paths, even if the contents L accumulates directly below the mixing chamber, the liquid level of the contents L can be kept below the upper end 716a of the inner cylinder 716 of the piston 70. Therefore, it is possible to prevent the contents L from overflowing the upper end 716a of the inner cylinder 716 of the piston 70 and flowing into the air chamber 632 through the through hole 720 of the piston 70.

[0151] For example Figure 1 and Figure 4The volume of the content L remaining after discharge from nozzle 30, which may liquefy, is calculated as "volume of discharge path 30a (excluding the volume of the passage that bends towards outlet 306a) + volume of mixing chamber 508" × "foam density". It can be assumed that because the foam in discharge path 30a is refined after passing through mesh filter (foam micronization mechanism) 310, the foam inside mesh filter 310 and mixing chamber 508 is larger and almost entirely occupied by air. Therefore, the volume of the content L remaining after discharge from nozzle 30, which may liquefy, is also calculated as "volume of discharge path 30a (excluding the volume of the passage that bends towards outlet 306a and the volume of mesh filter (foam micronization mechanism) 310)" × "foam density". By forming such a volume of space above valve core 718 up to the upper end 716a of inner cylinder 716, the inflow of content L into air chamber 632 can be prevented.

[0152] Furthermore, the position of the upper end 716a of the inner cylinder 716 of the piston 70 can extend upward through its relationship with the annular bottom 511 between the inner cylinder 510 and the outer cylinder 512 of the engaging member 50. A mixing chamber 508 is formed inside the bottom 511 of the engaging member 50. By changing the position and shape of the mixing chamber 508, the volume of the space where the liquefied content L of the content L remaining after discharge from the nozzle 30 can be adjusted. Alternatively, the volume of the "discharge flow path 30a" of the nozzle 30 (excluding the volume of the passage that bends toward the discharge port 306a) can also be adjusted.

[0153] Furthermore, in this embodiment, a protrusion 512a protruding radially inward is provided on the inner circumferential surface of the outer cylinder 512 of the engaging member 50. Therefore, the flow path area through which air A passes between the inner circumferential surface of the outer cylinder 512 of the engaging member 50 and the outer circumferential surface of the inner cylinder 716 of the piston 70 is narrowed by the protrusion 512a. Thus, it is possible to prevent a decrease in the flow velocity of air A in the flow path through which air A passes between the inner circumferential surface of the outer cylinder 512 of the engaging member 50 and the outer circumferential surface of the inner cylinder 716 of the piston 70.

[0154] In this embodiment, a protrusion 510c protruding radially outward is provided on the outer peripheral surface of the inner cylinder 510 of the engaging member 50. Therefore, the flow path area for air A between the outer peripheral surface of the inner cylinder 510 of the engaging member 50 and the inner peripheral surface of the inner cylinder 716 of the piston 70 is narrowed by the protrusion 510c. Thus, it is possible to prevent a decrease in the air velocity in the flow path between the outer peripheral surface of the inner cylinder 510 of the engaging member 50 and the inner peripheral surface of the inner cylinder 716 of the piston 70.

[0155] Furthermore, a protrusion 510a protruding radially inward is provided on the inner circumferential surface of the inner cylinder 510 of the engaging member 50. Therefore, the flow path area through which air A passes between the inner circumferential surface of the inner cylinder 510 of the engaging member 50 and the outer circumferential surface of the upper portion 802 of the rod valve 80 is narrowed due to the presence of the protrusion 510a. Thus, it is possible to prevent a decrease in the air velocity in the flow path through which air A passes between the inner circumferential surface of the inner cylinder 510 of the engaging member 50 and the outer circumferential surface of the upper portion 802 of the rod valve 80.

[0156] Therefore, the pump body 3 of this embodiment can increase the amount of foamed contents L discharged from the discharge port 306a of the discharge cylinder 306 of the nozzle 30, and reduce the volume of foam returning to the liquid in the discharge flow path 30a. By providing multiple protrusions 510a and protrusions 512a on the inner walls of the inner cylinder 510 and outer cylinder 512 of the engaging member 50, the pressure of the air pumped by the piston head 712 and the contents L when the nozzle 30 is pressed down can be increased and discharged from the nozzle 30. Therefore, the contents L remaining in the aforementioned internal passage 953 and inner passage 973 in the space from above the valve core 718 to the upper end 716a of the inner cylinder 716 can be suppressed. Therefore, the amount of contents L stored in the internal passage 953 and inner passage 973 after the discharge action of contents L from the nozzle 30 can be kept below a certain level, and the increase of the residual amount of contents L and its immersion into the cylinder 60 due to repeated discharge actions can be prevented.

[0157] By adjusting the number, length, and thickness of the protrusions 510a, 510c, and 512a on the inner wall of the engaging member (pressing part) 50, the volume of the contents L stored in the space above the valve core 718 and up to the upper end 716a of the inner cylinder 716 after the nozzle 30 is discharged can be adjusted.

[0158] In this embodiment, by providing a protrusion 510c on the outer wall of the inner cylinder 510 of the engaging member (pressing portion) 50, the sliding surface between the inner wall of the inner cylinder 716 of the piston 70 and the protrusion 510c of the inner cylinder 510 of the engaging member (pressing portion) 50 can slide smoothly in a state where axial and circumferential displacement is not easily caused. In addition, by providing a protrusion 510c on the outer wall of the inner cylinder 510 of the engaging member (pressing portion) 50, the position of the engaging member 50 relative to the piston 70 can be stabilized.

[0159] In this embodiment, by providing a protrusion 512a on the inner wall of the outer cylinder 512 of the engaging member (pressing portion) 50, the sliding surface between the outer wall of the inner cylinder 716 of the piston 70 and the protrusion 512a of the outer cylinder 512 of the engaging member (pressing portion) 50 can slide smoothly in a state where axial and circumferential displacement is not easily caused. In addition, by providing a protrusion 512a on the inner wall of the outer cylinder 512 of the engaging member (pressing portion) 50, the position of the engaging member 50 relative to the piston 70 can be stabilized.

[0160] Furthermore, in this embodiment, an example is described where a protrusion 512a is provided on the inner wall of the outer cylinder 512 of the engaging member (pressing portion) 50, and one or more protrusions 510c protruding toward the inner cylinder 716 of the piston 70 are provided on the outer peripheral surface (outer wall) of the inner cylinder 510 of the engaging member 50. These protrusions 510c and 512a allow the pressure of the air and contents L pumped by the piston head 712 when the nozzle 30 is pressed down to increase and be discharged from the nozzle 30. Furthermore, in Figure 5 The illustration shows an example of setting both protrusions 510c and 512a, but it is also possible to set only one of them.

[0161] Next, the steps for disassembling pump body 3 will be briefly explained.

[0162] First, release the thread fastening of the internal thread 20a of the support portion 20 of the pump body 3 relative to the external thread 16 of the container body 2, and separate the container body 2 and the pump body 3.

[0163] When the nozzle 30 is rotated relative to the support 20 by a rotational operation in one direction, the protrusion 520 of the engaging member 50, which rotates together with the nozzle 30, abuts against the protrusion 220 of the support 20. When the nozzle 30 is rotated relative to the support 20 with greater force in this state, the protrusion 520 of the engaging member 50 cannot move circumferentially relative to the protrusion 220 of the support 20. Therefore, while the protrusion 520 of the engaging member 50 abuts against the protrusion 220 of the support 20, the threaded fastening between the external thread 308 of the nozzle 30 and the internal thread 504 of the engaging member 50 is released. Thus, the nozzle (discharge head) 30 is disengaged from the engaging member 50 by a rotational operation in one direction. Therefore, the nozzle 30 can be disengaged from the engaging member 50 by a rotational operation in one direction.

[0164] Therefore, the nozzle 30 is detached from the support portion 20. Additionally, the force-applying member 40 is detached from the support portion 20.

[0165] Thus, the force-applying member 40 is separated from the pump body 3. In this embodiment, all components of the pump body 3 other than the force-applying member 40 are formed from a single material, such as PP. Therefore, if the force-applying member 40, made of a metal material, can be separated, then in this embodiment, the remaining components are, for example, made of a single material. Therefore, in this embodiment, as long as the force-applying member 40, made of a metal material, can be separated from the pump body 3, the remaining components do not need to be disassembled. Furthermore, the components of the pump body 3 other than the force-applying member 40 in this embodiment facilitate recycling in the regeneration process. Therefore, the amount of waste components after using the pump body 3 can be reduced.

[0166] Furthermore, when the force-applying member 40 of this embodiment is separated, the nozzle 30 is rotated relative to the support portion 20 only when the nozzle 30 is at its top dead center. Therefore, the pump body 3 can be separated into the force-applying member 40 and other components made of a single material through a simple operation, for example, without easily soiling the user's hands with the contents L. Thus, the user can sort and recycle the components of the pump body 3 (the force-applying member 40 and other components made of a single material) according to their raw materials.

[0167] In cases where the user violently rotates the nozzle 30 relative to the support 20, or when the discharge container 1 is dropped, the fastening between the external thread 308 of the nozzle 30 and the internal thread 504 of the engaging member 50 may be accidentally released. The assembly steps in such cases will be briefly explained.

[0168] Even when the external thread 308 of the nozzle 30 disengages from the internal thread 504 of the engaging member 50, for example due to friction between the piston 70 and the cylinder 60, the amount by which the engaging member 50 and the rod-shaped valve 80 fitted into the engaging member 50 descend is the same as the amount by which the lower end (outer pressing portion) 513 of the outer peripheral side of the outer cylinder 512 of the engaging member 50 moves from the top dead center to abut against the second inclined portion 744 of the piston 70. That is, the engaging member 50 is prevented from falling freely relative to the support portion 20 and the nozzle 30.

[0169] Therefore, the nozzle 30 is rotated relative to the protrusion 220 of the support portion 20 in a direction opposite to the direction in which the fastening of the external thread 308 of the nozzle 30 and the internal thread 504 of the engaging member 50 is released. The user then abuts the protrusion 520 of the engaging member 50 against the protrusion 220 of the support portion 20. Furthermore, with the protrusion 520 of the engaging member 50 abutting against the protrusion 220 of the support portion 20, the nozzle 30 is further rotated. In this way, the external thread 308 of the nozzle 30 and the internal thread 504 of the engaging member 50 are fastened. Through this process, the pump body 3 can also be used later. Therefore, the nozzle 30 of this embodiment is configured such that, after being disengaged from the engaging member 50 by a rotation operation in one direction, the lower end of the nozzle 30 can be re-threaded and fixed to the engaging member 50 by a rotation operation in the opposite direction.

[0170] According to this embodiment, it is possible to provide a pump dispenser 3 that can discharge liquid contents while taking into account ease of use and easy classification, a discharge container 1 having the pump dispenser 3, and a discharge container article 1a containing contents L having contents L stored in the container body of the discharge container 1.

[0171] Furthermore, in the pump body 3 of this embodiment, a space is formed directly below the mixing chamber 508 as a portion for accumulating contents (liquid) L each time after the liquid contents L are discharged. Therefore, according to this embodiment, it is possible to provide a pump dispenser 3 capable of receiving, for example, contents L remaining in the nozzle 30 each time after the liquid contents L are discharged and preventing contents (liquid) L from entering the air chamber 632, a discharge container 1 having the pump dispenser 3, and a discharge container article 1a containing contents L having contents L stored in the container body of the discharge container 1.

[0172] In conventional discharge containers, a flexible valve core is used to open and close the air intake and exhaust passages as a mechanism for air intake and exhaust from the air chamber. However, since the flexible valve core is made of soft raw material and is formed into a thin layer, it is prone to deformation due to repeated conveying and discharge operations from component forming to assembly. If permanent deformation occurs, it may result in the valve failing to operate smoothly. In contrast, according to this embodiment, when the piston 70 moves downward by pressing the second inclined portion (pressed portion) 744 of the piston 70 against the lower end (pressed portion) 513 of the outer peripheral side of the outer cylinder 512 of the engaging member 50, the lower end (pressed portion) 513 of the outer peripheral side of the engaging member 50 abuts against the second inclined portion (pressed portion) 744 of the piston 70. Through the elasticity of the lower end (pressed portion) 513 of the outer peripheral side of the engaging member 50 and the pressure applied to the second inclined portion (pressed portion) 744 of the piston 70 due to the increase in internal pressure in the cylinder 60 as the piston moves downward, a tighter abutment can be formed, and the communication between the air inside the cylinder 60 and the outside of the cylinder 60 can be effectively cut off. Furthermore, the lower end (pressing portion) 513 on the outer periphery of such a locking member 50 and the second inclined portion (pressed portion) 744 of the piston 70 are formed without using thin-walled elastomers, etc., so that they will not deform or undergo permanent deformation when the air intake and exhaust passages are opened and closed. Moreover, by using such a pump body 3, it is possible to suppress undesirable operation when discharging, for example, liquid contents L. Therefore, according to this embodiment, it is possible to provide a pump dispenser that performs air intake and exhaust of the air chamber without using easily deformable valve cores, suppresses undesirable operation when discharging, for example, liquid contents, and discharges contents; an article having the pump dispenser; and an article having contents stored in the container body of the discharge container.

[0173] [Postscript 1]

[0174] Furthermore, for example, Japanese Patent No. 6226763 discloses a pump dispenser that discharges liquid from a container directly or as foam from a discharge port by moving the discharge head up and down. This discloses a technique that improves the usability of a pump dispenser having an air inlet for drawing in external air to the discharge head, by providing a flexible valve core made of soft synthetic resin between the lower outer peripheral surface of the intermediate connecting portion of the air piston and the upper surface of the annular protrusion formed on the outer peripheral surface of the liquid piston.

[0175] In conventional pump distributors, the intake and exhaust mechanisms for the air chamber utilize flexible valve cores to open and close the intake and exhaust passages. However, because these flexible valve cores are made from thin, flexible raw materials, they are prone to deformation due to repeated conveying and discharging operations between component forming and assembly. Permanent deformation can lead to problems such as the valve core failing to operate smoothly. Therefore, a pump distributor that allows for air intake and exhaust from the air chamber without using easily deformable valve cores is sought.

[0176] In Appendix 1, it is possible to provide, for example, a pump dispenser that suppresses the occurrence of adverse conditions during the discharge of liquid contents and discharges the contents, a discharge container having the pump dispenser, and a discharge container article containing contents having contents stored in the container body of the discharge container.

[0177] [Postscript 1-1]

[0178] A pump distributor, wherein the pump distributor comprises:

[0179] A base cover, which is sealed and fitted into the main body of the container storing the contents;

[0180] A cylinder body, which is supported by the base cover;

[0181] A piston that reciprocates in one direction within the cylinder and forms an air chamber together with the cylinder.

[0182] The discharge head is disposed on the upper side of the piston and has a discharge flow path for the contents to flow through and a discharge outlet for discharging the contents.

[0183] The pressing part, which is used to abut against the piston when the discharge head is pressed down relative to the base cover, thereby moving the piston downward; and

[0184] The pressed-down portion tilts inward as it moves downward, and abuts against the pressed-down portion when the discharge head is pressed down.

[0185] When the discharge head is pressed down, the pressing part abuts against the pressed part, thereby cutting off the connection between the air chamber and the outside of the cylinder.

[0186] [Notes 1-2]

[0187] According to the pump distributor described in Appendix 1-1, wherein,

[0188] The pressing part has an outer pressing part that abuts against the pressed part.

[0189] The outer pressing portion is formed such that the plate thickness decreases in the direction of contact with the pressed portion.

[0190] [Notes 1-3]

[0191] According to the pump distributor described in Appendix 1-2, wherein,

[0192] The outer pressing portion is formed such that the contact surface with the pressed portion is along an inclined direction.

[0193] [Notes 1-4]

[0194] According to the pump distributor described in Appendix 1-1, wherein,

[0195] The pump distributor has a locking member, which has a pressing part, is disposed on the base cover, and locks and fixes the lower end of the discharge head.

[0196] [Notes 1-5]

[0197] A discharge container, wherein the discharge container has:

[0198] The pump distributor as described in any one of Appendix 1-1 to Appendix 1-4; and

[0199] A container body with a bottom, wherein the pump distributor is mounted on the container body.

[0200] [Notes 1-6]

[0201] A discharge container article containing contents, wherein the discharge container article containing contents has:

[0202] The discharge containers described in Notes 1-5; and

[0203] The contents are stored in the container body and discharged to the outside from the pump dispenser.

[0204] [Postscript 2]

[0205] Additionally, for example, Japanese Patent No. 6096631 discloses a technology related to a pump dispenser that can prevent backflow of contents into the air cylinder and maintain the foam in a good state. This pump dispenser is used to prevent the contents, which are repeatedly and sparsely generated during the discharge operation, from seeping into the air passage.

[0206] However, in the pump distributor, the contents remaining in the discharge head after each discharge fall down due to gravity.

[0207] Note 2 provides a pump dispenser capable of receiving, for example, contents remaining in the discharge head after each discharge of liquid contents and discharging the contents, a discharge container having the pump dispenser, and a discharge container article containing contents having contents stored in the container body of the discharge container.

[0208] [Postscript 2-1]

[0209] A pump distributor, wherein the pump distributor comprises:

[0210] A base cover, which is sealed and fitted into the main body of the container storing the contents;

[0211] A cylinder body, which is supported by the base cover;

[0212] A piston that reciprocates in one direction within the cylinder and forms an air chamber together with the cylinder.

[0213] The discharge head is disposed on the upper side of the piston and has a discharge flow path for the contents to flow through and a discharge outlet for discharging the contents.

[0214] A pressing part, the pressing part being used to abut against the piston when the discharge head is pressed down relative to the base cover, thereby causing the piston to move downward;

[0215] A rod-shaped valve, which is fitted into the lower pressure portion;

[0216] A mixing chamber, formed by the pressing section and the rod-shaped valve, mixes the contents with the air in the air chamber when the discharge head is pressed down; and

[0217] The space, which utilizes the pressing part, the rod valve and the piston, stores the contents remaining in the discharge path and the mixing chamber after the discharge head is pressed down.

[0218] [Postscript 2-2]

[0219] According to the pump distributor described in Appendix 2-1, wherein,

[0220] The space for storing the contents has a volume greater than or equal to the volume of the contents remaining in the discharge path and the mixing chamber.

[0221] [Notes 2-3]

[0222] According to the pump distributor described in Appendix 2-1, wherein,

[0223] The piston has a valve core that, together with the rod-shaped valve, cuts off the flow of the contents when the discharge head is at top dead center, and allows the contents to flow when the discharge head is pushed down from the top dead center.

[0224] The pump distributor includes: a vent passage disposed between the pressure-reducing part and the piston, which draws air from the outside into the air chamber; and a through hole disposed in the piston and communicating with the air chamber, wherein the communication between the vent passage and the air chamber is cut off by pressure exerted by the pressure-reducing part.

[0225] The space has the following characteristics:

[0226] An internal passage, disposed between the pressing section and the rod-shaped valve, allows the contents to flow into the mixing chamber when the discharge head is pressed down; and

[0227] An air passage is provided between the pressing part and the piston, and when the discharge head is pressed down, the air in the air chamber is compressed and flows into the mixing chamber.

[0228] [Appendix 2-4]

[0229] According to the pump distributor described in Appendix 2-3, wherein,

[0230] A protrusion is provided on the wall surface of the pressing part facing the internal passage.

[0231] [Notes 2-5]

[0232] According to the pump distributor described in Appendix 2-3, wherein,

[0233] The air passage has the following features:

[0234] An outer passage is formed between the outer peripheral surface of the inner cylinder of the piston and the pressing portion;

[0235] An inner passage is formed between the inner circumferential surface of the piston's inner cylinder and the pressing portion; and

[0236] A connecting passage is formed between the upper side of the inner cylinder of the piston and the lower pressing part, connecting the outer passage to the inner passage.

[0237] [Appendix 2-6]

[0238] According to the pump distributor described in Appendix 2-5, wherein,

[0239] A protrusion is provided on the wall surface of the pressing portion facing at least one of the outer passage and the inner passage.

[0240] [Appendix 2-7]

[0241] According to the pump distributor described in Appendix 2-1, wherein,

[0242] The pump distributor has a locking member, which has a pressing part, is disposed on the base cover, and locks and fixes the lower end of the discharge head.

[0243] [Appendix 2-8]

[0244] A discharge container, wherein the discharge container has:

[0245] The pump distributor as described in any one of Appendix 2-1 to Appendix 2-7; and

[0246] A container body with a bottom, wherein the pump distributor is mounted on the container body.

[0247] [Notes 2-9]

[0248] A discharge container article containing contents, wherein the discharge container article containing contents has:

[0249] The discharge container described in notes 2-8; and

[0250] The contents are stored in the container body and discharged to the outside from the pump dispenser.

[0251] Furthermore, the present invention is not limited to the embodiments described above, and various modifications can be made during implementation without departing from its spirit. Additionally, the embodiments can be appropriately combined to achieve combined effects. Moreover, various inventions are included in the above embodiments, and various inventions can be extracted by selecting combinations from the disclosed multiple constituent elements. For example, if the problem can be solved and the effect obtained even if several constituent elements are deleted from all the constituent elements shown in the embodiments, the structure with the deleted constituent elements can be extracted as an invention.

[0252] Explanation of reference numerals in the attached figures

[0253] 1…discharge container, 2…container body, 3…pump body, 4…pipe body, 12…main body, 14…fixed part, 16…external threaded part, 20…support part, 20a…internal threaded part, 202…nozzle guide tube, 202a…upper end, 204…container fixing tube, 206…shoulder, 208…inner cylindrical part, 208a…lower end, 210…middle cylindrical part, 212…flange part, 220…protrusion, 220a…lower end, 30…nozzle, 30a…discharge flow path, 302…inner cylinder, 303…bottom, 304…outer cylinder, 30… 6…Discharge cylinder, 306a…Discharge outlet, 308…External thread, 310…Mesh filter, 310a, 310b…Mesh, 40…Force application component, 40a…Lower end, 40b…Upper end, 50…Clamping component, 502…Upper cylinder, 504…Internal thread, 506…Fitting cylinder, 508…Mixing chamber, 510…Inner cylinder, 510a…Protrusion, 510b…Annular protrusion, 511…Bottom, 512…Outer cylinder, 512a…Protrusion, 513…Lower end, 520…Protrusion, 520a…Upper end, 532… 534…recess, 536…annular portion, 60…cylinder body, 602…first cylinder, 604…second cylinder, 606…mounting cylinder, 608…spherical valve core, 610…seal, 612…first sliding portion, 612a…inner circumferential surface, 614…fixed portion, 616…annular portion, 622…second sliding portion, 624…annular portion, 624a…valve seat, 632…air chamber, 634…liquid chamber, 70…piston, 702…air piston, 704…liquid piston, 712…piston head, 714…main body, 71 6…Inner cylinder, 716a…Upper end, 718…Annular valve core, 720…Through hole, 722…Protrusion, 732…Outer inclined part, 734…Inner inclined part, 736…Connecting part, 742…First inclined part, 744…Second inclined part, 80…Rod-shaped valve, 802…Upper part, 802a…Groove, 804…Lower part, 812…Conical part, 901…Ventilation path, 951…Passage path, 952…Passage path, 953…Internal passage, 971…Outer passage, 972…Connecting path, 973…Inner passage, 974…Passage path.

Claims

1. A pump distributor, wherein, The pump distributor includes: Cylinder block; A piston that reciprocates in one direction within the cylinder. The discharge head is disposed on the upper part of the piston and has a discharge flow path for the contents to flow through and a discharge port for discharging the contents. Base cover, wherein the base cover is sealed and fitted into the container body; A force-applying component is disposed above the base cover and applies an upward force to the discharge head; A locking member is provided on the base cover and is used to thread and fix the lower end of the discharge head. as well as The pressing part is used to abut against the piston and move the piston downward when the discharge head is pressed down. The discharge head is configured to rotate within a set range circumferentially relative to the base cover before disengaging the threaded connection by rotating circumferentially relative to the base cover.

2. The pump distributor according to claim 1, wherein, The discharge head is rotatable relative to the base cover within a circumferential range of more than 45° and less than 360°.

3. The pump distributor according to claim 2, wherein, The discharge head can rotate circumferentially relative to the base cover by a maximum range of 90° and less than 360°.

4. The pump distributor according to claim 1, wherein, A first protrusion is provided on the inner circumferential surface of the base cover. A second protrusion is provided on the outer peripheral surface of the engaging member. During the rotation of the discharge head, the first protrusion interferes with the second protrusion, thereby limiting circumferential rotation. The discharge head is configured to disengage from the engaging member by a rotational operation in one direction.

5. The pump distributor according to claim 4, wherein, The discharge head is configured such that, after being disengaged from the engaging member by a rotational operation in one direction, the lower end of the discharge head can be re-threaded and fixed to the engaging member by a rotational operation in the opposite direction.

6. The pump distributor according to claim 4, wherein, During the rotation of the discharge head relative to the base cover, the first protrusion of the base cover and the second protrusion of the engaging member are configured to interfere when the discharge head is at the upper dead point and not interfere when the discharge head is at the lower dead point.

7. The pump distributor according to claim 6, wherein, At least one of the lower end of the first protrusion of the base cover and the upper end of the second protrusion of the engaging member is conical.

8. The pump distributor according to claim 1, wherein, The pump distributor includes a pressure-down portion that tilts inward toward the lower side and abuts against the discharge head when the discharge head is pressed down. The cylinder body is supported by the base cover. The piston and the cylinder together form an air chamber. When the discharge head is pressed down, the pressing part abuts against the pressed part, thereby cutting off the connection between the air chamber and the outside of the cylinder.

9. The pump distributor according to claim 8, wherein, The pressing part has an outer pressing part that abuts against the pressed part. The outer pressing portion is formed such that the plate thickness decreases in the direction of contact with the pressed portion.

10. The pump distributor according to claim 9, wherein, The outer pressing portion is formed such that the contact surface with the pressed portion is along an inclined direction.

11. The pump distributor according to claim 1, wherein, The pump distributor includes: A rod-shaped valve, which is fitted into the lower pressure portion; A mixing chamber, formed by the pressing part and the rod-shaped valve, mixes the contents with the air in the air chamber formed by the cylinder and the piston when the discharge head is pressed down; as well as The space, utilizing the pressing section, the rod-shaped valve, and the piston, stores the contents remaining in the discharge path and the mixing chamber after the discharge head is pressed down. The cylinder body is supported by the base cover.

12. The pump distributor according to claim 11, wherein, The space for storing the contents has a volume greater than or equal to the volume of the contents remaining in the discharge path and the mixing chamber.

13. The pump distributor according to claim 11, wherein, The piston has a valve core that, together with the rod-shaped valve, cuts off the flow of the contents when the discharge head is at top dead center, and allows the contents to flow when the discharge head is pushed down from the top dead center. The pump distributor includes: a vent passage disposed between the pressure section and the piston, which draws air from the outside into the air chamber; And a through hole, which is disposed in the piston and communicates with the air chamber, and the communication between the air passage and the air chamber is cut off by the downward pressure of the downward pressure part. The space has the following characteristics: An internal passage is provided between the pressing part and the rod-shaped valve, and allows the contents to flow into the mixing chamber when the discharge head is pressed down; as well as An air passage is provided between the pressing part and the piston, and when the discharge head is pressed down, the air in the air chamber is compressed and flows into the mixing chamber.

14. The pump distributor according to claim 13, wherein, A protrusion is provided on the wall surface of the pressing part facing the internal passage.

15. The pump distributor according to claim 13, wherein, The air passage has the following features: An outer passage is formed between the outer peripheral surface of the inner cylinder of the piston and the pressing portion; An inner passage is formed between the inner circumferential surface of the piston's inner cylinder and the pressing portion; and A connecting passage is formed between the upper side of the inner cylinder of the piston and the lower pressing part, connecting the outer passage to the inner passage.

16. The pump distributor according to claim 15, wherein, A protrusion is provided on the wall surface of the pressing portion facing at least one of the outer passage and the inner passage.

17. The pump distributor according to claim 11, wherein, The pump distributor has a locking member, which has a pressing part, is disposed on the base cover, and locks and fixes the lower end of the discharge head.

18. A discharge container, wherein, The discharge container has: The pump distributor according to any one of claims 1 to 17; and A container body with a bottom, wherein the pump distributor is mounted on the container body.

19. A discharge container article containing contents, wherein, The discharge container article containing contents has: The discharge container as claimed in claim 18; and The contents are stored in the container body and discharged to the outside from the pump dispenser.

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