JP2020128233A - Dispenser - Google Patents

Abstract

To provide a dispenser capable of increasing an amount of liquid material that can be discharged.SOLUTION: A dispenser (1) includes a housing (2) having a recess portion (26), an elastic deformable lid portion (30) that covers an opening portion (261) of the recess portion (26) and forms a pump chamber (11) along with the recess portion (26), a pressing portion (70) that is disposed opposite to the lid portion (30) outside the pump chamber (11), can press the lid portion (30) to a side where a volume of the pump chamber (11) becomes small, and is provided so as to enter inside the recess portion (26) while pressing the lid portion (30) to elastically deform it, a drain port (112) that drain liquid material inside the pump chamber (11) toward the discharge port (12) when the pressing portion (70) presses the lid portion (30), and an inflow port (111) that is provided separately from the drain port (112) and inflows the liquid material into the pump chamber (11) when pressing to the lid portion (30) by the pressing portion (70) is released.SELECTED DRAWING: Figure 5

Description

The present invention relates to dispensers.

Conventionally, there is known a dispenser capable of discharging a liquid substance from a discharge port. For example, the dispenser disclosed in Patent Document 1 includes a chamber having a variable volume and capable of sucking and holding a fixed amount of liquid. This chamber is defined between the support structure and the elastic element. The elastic element is deformable and covers the opening of the recess opening to the outer surface of the support structure. The dispenser further comprises a lever. The lever is provided with ribs. The rib abuts the upper part of the outer surface of the elastic element. When the lever is operated, the rib presses and deforms the elastic element. Thereby, the chamber is compressed, and the liquid in the chamber is discharged from the outlet through the nozzle to the outside. The liquid discharge amount is determined by the maximum stroke amount of the lever. When the lever is released and the pressing of the elastic element by the rib is released, the liquid flows into the chamber from the suction pipe provided separately from the outlet.

U.S. Patent Application Publication No. 2013/0320042

However, the dispenser described in Patent Document 1 has a structure in which the rib does not enter the inside of the recess opening to the outer surface of the support structure even when the lever is at the maximum stroke position. Therefore, the amount of compression in the chamber is insufficient and the amount of liquid that can be ejected is limited. Therefore, the present invention relates to a dispenser that can increase the amount of liquid material that can be discharged.

In order to solve the above-mentioned problems, an aspect of the present invention is a dispenser capable of discharging a liquid substance from a discharge port, and a dispenser body having a recess and an opening of the recess to form a pump chamber together with the recess. An elastically deformable lid portion is arranged outside the pump chamber so as to face the lid portion, and the lid portion can be pressed to the side where the volume of the pump chamber becomes smaller. The pressing part is provided so as to be able to enter the inside of the pump, and when the pressing part presses the lid part, the outflow port for flowing out the liquid substance inside the pump chamber toward the discharge port and the outflow port are provided separately. In addition, the present invention relates to a dispenser including an inlet for allowing a liquid substance to flow into the interior of the pump chamber when the pressing of the lid by the pressing unit is released.

As described above, according to the dispenser of the present invention, it is possible to increase the amount of liquid material that can be discharged.

It is a perspective view of the dispenser which concerns on the 1st Embodiment of this invention. It is a side view of the dispenser concerning the embodiment. It is a top view of the dispenser which concerns on the same embodiment. It is a rear view of the dispenser concerning the embodiment. It is sectional drawing (VV view of FIGS. 3 and 4) of the dispenser which concerns on the same embodiment. It is a side view for explaining operation of a dispenser concerning the embodiment. It is a top view for explaining operation of the dispenser concerning the embodiment. FIG. 8 is a cross-sectional view (viewed along line VIII-VIII in FIG. 7) for explaining the operation of the dispenser according to the same embodiment. It is sectional drawing (IX-IX view of FIGS. 6 and 7) for demonstrating operation|movement of the dispenser which concerns on the same embodiment. It is a perspective view of the dispenser which concerns on the 2nd Embodiment of this invention. It is a side view of the dispenser concerning the embodiment. It is sectional drawing of the dispenser which concerns on the same embodiment. It is sectional drawing of the dispenser which concerns on the 3rd Embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, and duplicate description will be omitted.

<First Embodiment>
First, the configuration will be described. 1 to 5 show the configuration of the dispenser 1 of this embodiment before the operation. The dispenser 1 is a device capable of ejecting a liquid substance from the ejection port 12 in response to a user's takeout operation. The liquid substance includes not only a liquid but also a paste-like substance, and may be, for example, a liquid detergent, a softening agent, a bleaching agent, a shampoo, a rinse, a conditioner, a body soap, a cosmetic liquid, a drug, a liquid seasoning and the like. The dispenser 1 is a so-called pump dispenser, and has a suction port 10, a pump chamber 11, and a discharge port 12, as shown in FIG. A pump chamber 11 is provided on a passage connecting the suction port 10 and the discharge port 12, and the suction port 10 and the discharge port 12 are separated from each other via the pump chamber 11. The dispenser 1 may discharge the liquid material as it is, or may be equipped with a mechanism for atomizing the liquid material and may discharge the liquid material in a mist state.

The liquid material is contained in a container 100 separate from the dispenser 1. The container 100 has, for example, a bottle shape, is attached to the dispenser 1, and supplies the liquid material to the dispenser 1. The dispenser 1 can inhale a liquid substance from the inhalation port 10. The dispenser 1 and the container 100 attached to each other function as a discharge container. The suction pipe 110 may be connected to the suction port 10 of the dispenser 1 depending on the form of the container 100. When a so-called deramie container having an inner layer that shrinks as the liquid material to be stored decreases as the container 100, the suction pipe 110 may not be connected to the dispenser 1.

The dispenser 1 includes a housing 2, an elastic member 3, a suction valve 4, a discharge valve 5, a mounting member 6, a pressing member 7, and a biasing unit 8.

As shown in FIGS. 1 to 5, the housing 2 has a disc portion 20, a first cylindrical portion 21, a second cylindrical portion 22, a nozzle portion 23, and a grip portion 24. As shown in FIG. 5, the disc portion 20, the first cylindrical portion 21, and the second cylindrical portion 22 have a common shaft 250, are stacked in this order, and the diameter becomes smaller in this order. Hereinafter, in the direction along the axis 250, the side of the disc portion 20 with respect to the first cylindrical portion 21 is also referred to as the upper side, and the side of the first cylindrical portion 21 with respect to the disc portion 20 is also referred to as the lower side. However, the terms “upper” and “lower” mean relative positional relationships in the dispenser 1, and do not necessarily mean “upper and lower” in the vertical direction.

The nozzle portion 23 projects from the outer edge of the disc portion 20 and extends in the radial direction of the disc portion 20. A cap 230 is installed at the tip of the nozzle portion 23. The discharge port 12 opens at the tip of the cap 230. A cylindrical protrusion 231 (see FIG. 2) projects from each of both side surfaces of the nozzle portion 23. The protrusion 231 is on the upper side of the nozzle portion 23 and extends in the direction perpendicular to the axis of the nozzle portion 23.

The grip portion 24 is plate-shaped and extends along a plane orthogonal to the axis 250. The grip portion 24 projects from the opposite side of the nozzle portion 23 with the shaft 250 at the outer edge of the disc portion 20 interposed therebetween, and extends in the radial direction of the disc portion 20. A shallow depression 240 is provided on the lower surface of the grip portion 24. The recess 240 facilitates the positioning of the finger on the grip portion 24.

The first cylindrical portion 21 has a bottomed cylindrical shape and projects from the lower surface of the disk portion 20. The suction port 10 opens at the bottom 210 at the lower end of the first cylindrical portion 21. A flange-shaped projection 211 projects from the outer surface of the first cylindrical portion 21. The second cylindrical portion 22 has a cylindrical shape and projects from the bottom portion 210 of the first cylindrical portion 21. The second cylindrical portion 22 surrounds the suction port 10. As shown in FIG. 5, the suction pipe 110 may be connected to the second cylindrical portion 22.

As shown in FIG. 5, a recess 26, a biasing unit housing hole 27, a suction valve housing hole 28, and a discharge passage 29 are formed inside the housing 2.

The recess 26 is formed inside the disk portion 20 and opens on the upper surface 201 of the disk portion 20. The recess 26 is recessed like a watch glass. The bottom surface 260 of the recess 26 is, for example, a curved surface obtained by cutting a part of a spherical surface. The bottom surface 260 is circular when viewed from above, but may be elliptical or the like. The bottom surface 260 may be directly connected to the upper surface 201 of the disk portion 20, or may be connected to the upper surface 201 of the disk portion 20 via the inner peripheral surface of the inner surface of the recess 26 that extends in the axial direction. An annular groove 202 surrounding the opening 261 of the recess 26 is provided on the upper surface 201 of the disk portion 20.

The urging unit housing hole 27 is formed inside the disk portion 20 and the first cylindrical portion 21. The urging unit housing hole 27 has a cylindrical shape, and one end in the axial direction opens to the bottom surface 260 of the recess 26. Since this opening 111 functions as an inflow port to the pump chamber 11, it is hereinafter referred to as an inflow port 111. The inflow port 111 is provided in the pump chamber 11 and opens to the bottom surface 260 of the recess 26.

The suction valve accommodation hole 28 is formed inside the first cylindrical portion 21, and is connected to the other axial end of the urging unit accommodation hole 27. The suction valve accommodation hole 28 has a cylindrical shape with a smaller diameter than the biasing unit accommodation hole 27, and is defined by the bottom portion 210 of the first cylindrical portion 21. The suction port 10 formed in the bottom portion 210 of the first cylindrical portion 21 is connected to the suction valve housing hole 28, so that the suction port 10 and the recess 26 communicate with each other. That is, the suction port 10 communicates with the inflow port 111 via the suction valve accommodation hole 28 and the urging unit accommodation hole 27, and the suction port 10 through the suction valve accommodation hole 28, the urging unit accommodation hole 27, and the inflow port 10. The passage connected to the recess 26 via 111 functions as a suction passage for the liquid material to the pump chamber 11.

The recess 26, the biasing unit housing hole 27, the suction valve housing hole 28, and the suction port 10 have a common axis and extend along this axis. In the present embodiment, this axis coincides with the axis 250 of the disc portion 20 or the like.

The discharge passage 29 is formed inside the disk portion 20 and the nozzle portion 23, and opens at the bottom surface 260 of the recess 26. Since this opening 112 functions as an outlet from the pump chamber 11, it will be referred to as an outlet 112 hereinafter. The outflow port 112 is provided in the pump chamber 11 and opens to the bottom surface 260 of the recess 26. The outflow port 112 is provided separately from the inflow port 111, and the outflow port 112 and the inflow port 111 communicate with each other via only the pump chamber 11. The opening area of the outlet 112 on the bottom surface 260 is smaller than the opening area of the inlet 111 on the bottom surface 260. The discharge passage 29 is connected to the discharge port 12 at the tip of the nozzle portion 23 and functions as a discharge passage from the pump chamber 11.

The elastic member 3 is installed on the upper surface 201 of the disk portion 20. The elastic member 3 is made of, for example, synthetic resin and has flexibility. The elastic member 3 has a lid portion 30 and a flange portion 31.

The lid portion 30 is an elastically deformable film-shaped portion and has a predetermined elasticity. The lid 30 covers the opening 261 of the recess 26 and forms the pump chamber 11 together with the recess 26. In the initial state before the lid portion 30 is deformed, the lid portion 30 has a dome shape that bulges upward with respect to the opening 261 of the recess 26, that is, on the side away from the bottom surface 260 of the recess 26. It has a curved curved surface. As shown in FIG. 3, the lid portion 30 has a circular shape when viewed from above when viewed from above, but may have an elliptical shape or the like. The thickness or elastic modulus of the lid portion 30 may be partially different in the plane of the lid portion 30. As shown in FIG. 5, the cylindrical locking portion 34 projects from the lower surface of the lid portion 30, that is, the central portion of the surface facing the pump chamber 11. The outer diameter of the locking portion 34 is smaller than the diameter of the opening of the biasing unit housing hole 27 on the bottom surface 260. In order to reinforce the lid portion 30, a plurality of ribs extending radially from the locking portion 34 and reaching the vicinity of the outer edge of the lid portion 30 may be provided on the lower surface or the upper surface of the lid portion 30.

The flange portion 31 is a plate-shaped connecting portion that surrounds the lid portion 30. An annular protrusion 311 that surrounds the lid portion 30 projects from the lower surface of the flange portion 31. The projection 311 is fitted in the groove 202 of the disk portion 20, and the lower surface of the flange portion 31 and the upper surface 201 of the disk portion 20 are in contact with each other, so that the pump chamber 11 is defined and kept liquid-tight.

The intake valve 4 is made of synthetic resin, and as shown in FIG. 5, integrally includes a cylindrical base body 40 and a plate-shaped valve body 41. The valve body 41 is connected to the base body 40 via one end of the base body 40 in the axial direction via a connecting portion, and can be elastically displaced relative to the base body 40 in the axial direction. The base body 40 fits into the intake valve housing hole 28. The valve body 41 is installed on the bottom portion 210 of the first cylindrical portion 21 so as to close the suction port 10. When the pressure inside the first cylindrical portion 21 becomes lower than the pressure inside the second cylindrical portion 22 and the thrust due to the pressure difference exceeds the elastic force of the connecting portion, the valve body 41 separates from the bottom 210. , The suction port 10 opens. When the pressure inside the first cylindrical portion 21 rises and the thrust force due to the pressure difference falls below the elastic force of the connecting portion, the valve body 41 contacts the bottom portion 210 and the suction port 10 closes. When the pressure inside the first cylindrical portion 21 is equal to or higher than the pressure inside the second cylindrical portion 22, the above-described state in which the suction port 10 is closed is maintained.

The discharge valve 5 is a ball valve, and has a ball-shaped valve body 50 and a return spring 51, as shown in FIG. The discharge valve 5 is housed in a discharge valve housing hole 233 provided inside the nozzle portion 23. The valve body 50 is seated on the valve seat 232 to close the space between the pump chamber 11 and the discharge port 12 in the discharge passage 29. The return spring 51 is a coil spring, and is installed between the end of the cap 230 and the valve body 50 in a compressed state, and always urges the valve body 50 toward the valve seat 232. In the discharge passage 29, when the thrust force due to the pressure on the pump chamber 11 side with respect to the valve seat 232 becomes higher than the sum of the thrust force due to the pressure on the discharge port 12 side and the urging force of the return spring 51, this pressure difference causes the valve The body 50 separates from the valve seat 232, the discharge passage 29 opens, and the pump chamber 11 and the discharge port 12 communicate with each other. When the thrust force due to the pressure on the pump chamber 11 side falls below the sum of the thrust force due to the pressure on the discharge port 12 side and the biasing force of the return spring 51, the valve body 50 is seated, the discharge passage 29 is closed, and the pump chamber 11 The communication between the discharge port 12 and the discharge port 12 is cut off.

The mounting member 6 is a cylindrical cap having a threaded portion 60 formed on the inner surface thereof and surrounds the first cylindrical portion 21. The mounting member 6 is rotatable with respect to the first cylindrical portion 21. As shown in FIG. 5, the upper end 61 of the mounting member 6 is locked to the protrusion 211, whereby the downward axial movement of the mounting member 6 with respect to the first cylindrical portion 21 is restricted. The user inserts the mouth/neck portion 101 of the container 100 into the gap between the outer surface of the first cylindrical portion 21 and the inner surface of the mounting member 6 and rotates the mounting member 6 with respect to the mouth/neck portion 101. The threaded portion of the mouth/neck portion 101 can be screwed onto the threaded portion 60 of the mounting member 6. Accordingly, the container 100 can be fastened and fixed to the dispenser 1 and mounted.

The pressing member 7 is arranged on the opposite side of the pump chamber 11 with the lid 30 in between, and faces the upper surface of the lid 30. The pressing member 7 is provided integrally with the lever (lever) 71, and is formed integrally with the lever 71 by using, for example, a synthetic resin as a material. The lever 71 has a plate shape that is convexly and gently curved upward. The lever 71 has a hinge portion 711 and a grip portion 712. The hinge portion 711 is at one end in the longitudinal direction of the lever 71, and the grip portion 712 is at the other end in the longitudinal direction of the lever 71.

As shown in FIG. 3, the hinge portions 711 are located on both sides in the plate width direction at right angles to the longitudinal direction of the lever 71, and sandwich the nozzle portion 23 across it. As shown in FIG. 2, a hole 710 is formed in the hinge portion 711. The projection 231 of the nozzle portion 23 is rotatably fitted in the hole 710. The hole 710 and the protrusion 231 function as a fulcrum of the lever 71. As shown in FIGS. 2 and 5, this fulcrum is at a height that overlaps the recess 26 in the vertical direction, in other words, between the opening 261 and the deepest part of the bottom surface 260 of the recess 26. More specifically, the hole 710 and the protrusion 231 are located at substantially the same height as the groove 202 of the disk portion 20, in other words, the connection portion between the elastic member 3 and the housing 2. Hereinafter, the rotation direction of the lever 71 about the fulcrum will be simply referred to as the rotation direction.

6 to 9, the grip portion 712 of the lever 71 is pushed down to the lowest side, in other words, to the position closest to the grip portion 24 of the housing 2, and the stroke amount of the lever 71 in the rotation direction is maximized. That is, the dispenser 1 with the lever 71 in the maximum stroke position is shown. For simplification, the suction valve 4, the discharge valve 5 and the urging unit 8 are not shown in FIGS.

The grip portion 712 faces the grip portion 24 of the housing 2 in the rotation direction of the lever 71. At the initial position of the lever 71, there is a predetermined distance between the grips 24 and 712, and the grip 712 of the lever 71 is located at a predetermined height with respect to the grip 24 of the housing 2. The above-mentioned predetermined distance is, for example, a distance that allows the user to easily grip and grasp both grips 24 and 712 with his/her one hand with his/her thumb and other arbitrary fingers. The grip portion 712 of the lever 71 functions as a force point of the lever 71. A shallow timepiece-shaped depression 713 is provided on the upper surface of the grip portion 712. The depression 713 facilitates the positioning of the finger on the grip portion 712 and suppresses the slip of the finger with respect to the grip portion 712.

The pressing member 7 has a pressing portion 70. The pressing portion 70 is provided between the hinge portion 711 and the grip portion 712 of the lever 71, and projects from the lower surface of the lever 71. The pressing portion 70 faces the lid portion 30 in the rotation direction of the lever 71. As shown in FIGS. 4 and 7, the pressing portion 70 has a shape in which one convex portion is thinned into a plurality of streaks, and includes a plurality of, for example, six plate portions 701. Each plate portion 701 is a plate shape that extends in a direction perpendicular to the lower surface of the lever 71, and extends in the longitudinal direction of the lever 71. The plate portions 701 have substantially the same thickness, and the lever 71 also has substantially the same thickness.

Hereinafter, the portion at the tip of the pressing portion 70 and the portion at the bottom surface 260 of the recess 26, which face each other or overlap each other in the rotation direction of the lever 71, are referred to as the facing portions. The tip surface of the plate portion 701 is, for example, a curved surface obtained by cutting a part of a spherical surface. At least a part of the front end surface of the plate portion 701 has a shape along the facing portion of the bottom surface 260, and has a curvature equal to that of the facing portion of the bottom surface 260, for example. The above-mentioned at least part of the front end surface of the plate portion 701 is, for example, as shown in FIG. 5, a portion facing the central portion 260A of the bottom surface 260 in the rotation direction of the lever 71.

Further, as shown in FIGS. 8 and 9, it is possible to envision a virtual envelope surface 700 that commonly passes through the tips of the plate portions 701. The envelope surface 700 is the front end surface of the pressing portion 70, and has, for example, a curved surface shape obtained by cutting a part of a spherical surface. At least a part of the envelope surface 700 has a shape along the bottom surface 260 and has, for example, a curvature equal to that of the bottom surface 260. The above-mentioned at least part is, for example, a portion facing the central portion 260A of the bottom surface 260 in the rotation direction of the lever 71.

As shown in FIG. 7, in the rotation direction of the lever 71, the pressing portions 70, that is, the tips of the plurality of plate portions 701 overlap a part of the lid portion 30. A region including the tip of the pressing portion 70 in the plan view of the lever 71 is referred to as a region A. At the maximum stroke position where the lever 71 is pushed down to the bottom and the pushing portion 70 is displaced to the bottom, a part of the lid portion 30 overlaps with the area A in the rotation direction of the lever 71. Does not overlap with A. A part of the region A is on the central side of the lid 30 in the radial direction of the lid 30, for example, on the central side of the midpoint P between the outer peripheral edge of the lid 30 and the center. The other part of the region A is on the outer peripheral edge side of the lid portion 30, for example, on the outer peripheral edge side with respect to the midpoint P of the lid portion 30. The center of the lid 30 may be at or near the intersection with the shaft 250 of the recess 26 or the like.

As shown in FIG. 7, at the maximum stroke position, the dimension of the region A in the longitudinal direction of the lever 71 is substantially equal to the dimension of the lid portion 30 in the longitudinal direction of the lever 71. The dimension of the region A in the plate width direction perpendicular to the longitudinal direction of the lever 71 is larger than the radius of the lid portion 30. At the maximum stroke position, the outer edge of the region A in the longitudinal direction of the lever 71 overlaps the outer peripheral edge of the lid 30. The outer edge of the region A of the lever 71 in the plate width direction is located closer to the outer peripheral edge of the lid 30 than the midpoint P of the lid 30.

As shown in FIGS. 8 and 9, the height of any part of the envelope surface 700 with respect to the lever 71 is greater than the distance from the facing part of the bottom surface 260 to the opening 261 of the recess 26, that is, the depth of the recess 26.

As shown in FIGS. 4 and 5, of the tips of the two plate portions 701 located on the center side in the plate width direction of the lever 71, at the portion facing the center portion of the lid portion 30 in the rotation direction of the lever 71, A protrusion 702 protruding from the tip surface of the plate portion 701 is provided. The protrusion 702 is located at a position that overlaps with the locking portion 34 of the lid portion 30 and a position that overlaps with the opening of the biasing unit housing hole 27 in the bottom surface 260 of the recess 26 in the rotation direction of the lever 71. As shown in FIG. 5, the portion of the protrusion 702 facing the lid portion 30 has a linear shape on the hinge portion 711 side when viewed from the side surface of the plate portion 701, that is, when viewed from the rotation axis direction of the lever 71, and is grasped. The side of the portion 712 has a convex curve shape, specifically, an arc shape. The area occupied by the two protrusions 702 in the longitudinal direction and the plate width direction of the lever 71 is smaller than the opening of the urging unit accommodation hole 27 in the bottom surface 260. At the initial position of the lever 71, the linear portions of both protrusions 702 are in contact with the central portion of the upper surface of the lid portion 30.

As shown in FIG. 5, the urging unit 8 has a first support member 81, a second support member 82, and a coil spring 80.

The first support member 81 has a cylindrical shape, and one end in the axial direction thereof is provided with a first flange portion 811 spreading outward in the radial direction, and the other end in the axial direction is provided with a second flange portion 812 extending inward in the radial direction. ing. The second support member 82 has a shape in which a bottomed cylindrical portion 82A and a plate-shaped portion 82B are joined together. A first flange portion 821 extending outward in the radial direction is provided at one axial end of the second support member 82, that is, at the opening-side end of the bottomed cylindrical portion 82A, and the other axial end of the second support member 82 is provided. That is, the second flange portion 822 that extends radially outward is provided at the end of the plate-shaped portion 82B.

The second support member 82 is fitted to the inner circumference of the first support member 81. Both support members 81 and 82 are slidable with respect to each other. Engagement of the second flange portion 812 of the first support member 81 and the first flange portion 821 of the second support member 82 restricts the second support member 82 from coming out of the first support member 81, This defines the maximum axial dimension of the biasing unit 8. The coil spring 80 is installed so as to surround the outer peripheries of both the support members 81 and 82. The coil spring 80 is installed between the first flange portion 811 of the first support member 81 and the second flange portion 822 of the second support member 82 in a constantly compressed state. In the initial state, the urging unit 8 has the maximum axial dimension.

A part of the urging unit 8 is installed in the urging unit accommodation hole 27. The first flange portion 811 of the first support member 81 as one axial end of the biasing unit 8 is inside the pump chamber 11 and faces the lower surface of the lid portion 30. The locking portion 34 of the lid portion 30 is fitted to the inner circumference of the first flange portion 811. As a result, the first support member 81 is locked to the lid portion 30, and movement of the first support member 81 in the radial direction of the lid portion 30 is restricted. Since a part of the lid portion 30 also serves as the locking portion 34, an increase in the number of parts can be suppressed and the dispenser 1 can be downsized.

The second flange portion 822 of the second support member 82, which is the other axial end of the urging unit 8, is inside the urging unit accommodation hole 27 and faces the intake valve 4. The space on the inner peripheral side of the base body 40 of the intake valve 4 is connected to the spaces on both sides of the plate-shaped portion 82B of the second support member 82, and these spaces on both sides function as a part of the intake passage. The outer edge of the second flange portion 822 comes into contact with the inner surface of the urging unit accommodation hole 27, so that the movement of the second support member 82 in the radial direction of the urging unit accommodation hole 27 is restricted.

The maximum value of the axial dimension of the biasing unit 8 is set so that the biasing unit 8 does not push the lid 30 upward in the initial state before the pressing portion 70 deforms the lid 30. For example, in the initial state, the first flange portion 811 of the first support member 81 as one axial end of the biasing unit 8 is provided so as not to contact the elastic member 3 in the rotation direction of the lever 71. .. As a result, it is possible to prevent the durability of the lid portion 30 from being lowered due to the lid portion 30 being constantly deformed.

Next, the operation will be described. When the pressing member 7 is operated, that is, when the grip portion 712 of the lever 71 is pushed down from the initial position, the pushing portion 70 functions as an action point of the lever 71 and pushes the lid portion 30 downward. The pressing portion 70 presses the lid portion 30 toward the bottom surface 260 of the concave portion 26, that is, the side where the volume of the pump chamber 11 is small, to elastically deform the lid portion 30. The plurality of plate portions 701 function as one convex portion whose envelope surface 700 is the front end surface. The lid 30 is deformed into a shape that follows the envelope surface 700, that is, a curved surface that is convex toward the inside of the pump chamber 11.

When the lever 71 is pushed down to a position along the upper surface 201 of the disc portion 20, further displacement of the lever 71 is suppressed. The position of the pressing member 7 at this time is the maximum stroke position. A stopper for restricting the upper limit of the displacement amount of the lever 71 may be provided separately. As shown in FIG. 7, at the maximum stroke position, the pressing portion 70 comes into contact with the entire upper surface of the lid portion 30 in a predetermined radial direction, for example, in the longitudinal direction of the lever 71. As shown in FIGS. 8 and 9, at the maximum stroke position, the gap between the lid portion 30 and the bottom surface 260 of the recess 26 is minimized, and the lower surface of the lid portion 30 follows the bottom surface 260.

A pump chamber 11 is provided on the passage connecting the suction port 10 and the discharge port 12. Therefore, as the pump chamber 11 expands and contracts, the liquid substance is sucked into the pump chamber 11 through the suction port 10, and the liquid substance inside the pump chamber 11 is discharged toward the discharge port 12. Specifically, the pump chamber 11 is provided with an inflow port 111 and an outflow port 112. When the pressing portion 70 presses the lid portion 30, for example, when the lid portion 30 is deformed and the volume of the pump chamber 11 becomes small, the pressure inside the pump chamber 11 becomes higher than the outside pressure, for example, atmospheric pressure. The suction valve 4 is closed, the discharge valve 5 is opened, and the liquid substance inside the pump chamber 11 flows out from the outlet 112 toward the discharge port 12 and is discharged from the discharge port 12 through the discharge passage 29. The user can appropriately adjust the discharge amount by adjusting the operation amount of the pressing member 7, that is, the pressing amount of the lever 71. When the pressing of the lid portion 30 by the pressing portion 70 is released, for example, when the operating force input to the grip portion 712 is reduced, the lid portion 30 elastically deforms toward the initial state, and thus the pump chamber 11 The volume increases, and the pressure inside the pump chamber 11 becomes lower than the pressure outside. The discharge valve 5 is closed, the suction valve 4 is opened, and the liquid substance from the container 100 flows into the pump chamber 11 from the inflow port 111 through the suction passage and is sucked into the pump chamber 11.

As described above, the suction valve 4 may be provided to block the communication between the suction port 10 and the inflow port 111 when the pressing unit 70 presses the lid 30. In this case, the flow of the liquid substance from the pump chamber 11 to the suction port 10 can be suppressed, and the liquid substance can efficiently flow out from the inside of the pump chamber 11 toward the discharge port 12. The suction valve 4 is provided not only between the suction port 10 and the inflow port 111, but is provided in the inflow port 111, for example, and is configured to close the inflow port 111 when the pressing portion 70 presses the lid part 30. May be. The member forming the inflow port 111 and the member forming the suction valve 4 may be integrated. Further, the suction port 10 may be integrated with the inflow port 111.

Further, the discharge valve 5 may be provided to block the communication between the discharge port 12 and the outflow port 112 when the pressing of the lid part 30 by the pressing part 70 is released. In this case, the suction of air from the discharge port 12 into the pump chamber 11 can be suppressed more easily, and the liquid substance can efficiently flow into the pump chamber 11 from the suction port 10. The discharge valve 5 is provided not only between the outlet 112 and the outlet 12, but is provided in the outlet 112, for example, and closes the outlet 112 when the pressing of the lid 30 by the pressing portion 70 is released. It may be configured. The member forming the outlet 112 and the member forming the discharge valve 5 may be integrated. Further, the discharge port 12 may be integrated with the outflow port 112.

The inflow port 111 and the outflow port 112 may be open to the bottom surface 260 of the recess 26. In this case, the inflow port 111 and the outflow port 112 can be easily provided in the pump chamber 11, and the structure of the pump chamber 11 can be simplified. Further, the opening area of the outflow port 112 may be smaller than the opening area of the inflow port 111. In this case, the momentum of the outflow of the liquid substance from the pump chamber 11 via the outflow port 112 can be improved, and the inflow of the liquid substance into the pump chamber 11 via the inflow port 111 can be promoted.

Next, advantages of each of the above configurations will be described. The housing 2 having the recess 26 functions as a dispenser body. The elastically deformable lid 30 covers the opening 261 of the recess 26 and forms the pump chamber 11 together with the recess 26. Therefore, as compared with the case where the piston forms the pump chamber 11, for example, it is easier to increase the diameter of the pump chamber 11, and the discharge amount from the pump chamber 11 by one operation, that is, the supply amount to the outside of the dispenser 1. Can be a lot. Since the bottom surface 260 of the recess 26 is circular in a plan view, the diameter of the pump chamber 11 can be effectively increased. The pressing portion 70 is arranged outside the pump chamber 11 so as to face the lid portion 30, and can press the lid portion 30 to the side where the volume of the pump chamber 11 is small. By thus providing the pressing portion 70, the lid portion 30 can be efficiently pushed down, and the amount that can be discharged from the pump chamber 11 can be increased with a small amount of operation. In other words, by providing the lid portion 30 and the pressing portion 70, the amount that can be discharged from the pump chamber 11 can be increased with a small displacement amount of the pressing portion 70, that is, a small operation amount of the pressing member 7. The lid portion 30 may have a film shape. In this case, it is easier to increase the diameter of the pump chamber 11, and it is easier to deform the lid portion 30 into a shape that follows the pressing portion 70.

In the initial state, the lid portion 30 may have a portion projecting upward with respect to the opening 261 of the recess 26, that is, on the side away from the recess 26. This protruding portion may be a part or the whole of the lid portion 30. In this case, it is easy to secure a large volume of the pump chamber 11 in the initial state. Further, the amount of deformation of the lid 30 from the initial state, that is, the amount of change in the volume of the pump chamber 11 can be increased, and the amount that can be discharged from the pump chamber 11 can be increased. In other words, it is possible to secure a large difference between the maximum volume and the minimum volume of the pump chamber 11 and increase the maximum discharge amount. The lid portion 30 may have a planar shape that spreads along the upper surface 201 of the disc portion 20, or may have a shape that protrudes downward with respect to the opening portion 261 of the recess 26, that is, on the side closer to the bottom surface 260 of the recess 26. You can The lid 30 may be made of a stretchable material.

The lid 30 may have a portion that bulges upward, that is, on the side away from the bottom surface 260 of the recess 26, for example, a dome-shaped portion. This bulging portion may be a part or the whole of the lid portion 30. In this case, when the bulged portion of the lid portion 30 is deformed from the initial state, the bulging direction of the portion is reversed from the side away from the bottom surface 260 to the side toward the bottom surface 260. Therefore, it is possible to efficiently increase the volume change amount of the pump chamber 11 and increase the dischargeable amount from the pump chamber 11. The shape of the bulged portion is not limited to the dome shape.

The pressing portion 70 is provided so as to be able to enter the inside of the concave portion 26 while pressing the lid portion 30 to elastically deform the lid portion 30. In other words, at least a part of the pressing part 70 can be located inside the recess 26, and the lid part 30 can be deformed inside the recess 26 following the above-mentioned at least part of the pressing part 70. .. Therefore, by bringing the lid portion 30 closer to the bottom surface 260 of the recess 26, it is possible to increase the volume change amount of the pump chamber 11 and increase the amount that can be discharged from the pump chamber 11. In other words, the maximum discharge amount can be increased by efficiently using the volume of the recess 26 as compared with the structure in which the press portion 70 does not enter the inside of the recess 26 when the press portion 70 is maximally displaced. By effectively utilizing the space inside the housing 2 in this manner, the dispenser 1 can be downsized. The at least part of the pressing portion 70 may be located outside the recess 26 in the initial state. In this case, when the pressing member 7 is operated, at least a part thereof can be located inside the recess 26. Therefore, the amount of deformation of the lid 30 from the initial state can be increased, and the amount that can be discharged from the pump chamber 11 can be increased.

Specifically, with the pressing portion 70 inside the recess 26, the lid portion 30 pressed by the pressing portion 70 elastically deforms to a shape along the recess 26. Therefore, the lid 30 can be brought closer to the bottom surface 260 of the recess 26 more effectively.

The lid portion 30 may bulge on the side opposite to the recess 26 side. Specifically, in the initial state, the lid portion 30 may have a shape that bulges upward with respect to the opening 261 of the recess 26, that is, on the side away from the bottom surface 260 of the recess 26. In this case, it is possible to more efficiently increase the volume change amount of the pump chamber 11 and increase the dischargeable amount from the pump chamber 11. In the initial state, the height of the lid portion 30, that is, the maximum distance from the opening 261 may be smaller than the maximum radius of the lid portion 30, that is, the maximum value (maximum radius) of the radius of the lid portion 30 in the opening 261. It may be, for example, 20% or less of the maximum radius. In this case, by suppressing the height of the lid portion 30, the dispenser 1 can be downsized. On the other hand, by making the maximum radius of the lid portion 30 relatively large, it is possible to secure a large maximum volume of the pump chamber 11. Since the lid portion 30 has a circular shape in a plan view, the volume change amount of the pump chamber 11 can be efficiently increased. Here, if at least a part of the pressing portion 70 can be located inside the concave portion 26, even if the height of the lid portion 30 is suppressed as described above, the deformable range of the lid portion 30 is reduced. You can secure a large. Therefore, it is possible to increase the volume change amount of the pump chamber 11 and increase the amount that can be discharged from the pump chamber 11.

The pressing portion 70 may press the lid portion 30 to elastically deform the lid portion 30 so that ⅓ or more of the lid portion 30 can enter the recess 26. For example, the pressing portion 70 may be capable of deforming the lid portion 30 so that 1/3 or more, for example, half or more of the lower surface of the lid portion 30 is located inside the recess 26. In this case, the volume of the recess 26 can be efficiently used to increase the amount that can be discharged from the pump chamber 11.

The pressing portion 70 may be capable of deforming part or all of the surface of the lid portion 30 toward the inside of the recess 26. In this case, the volume of the pump chamber 11 can be efficiently reduced, and the amount that can be discharged from the pump chamber 11 can be increased with a small displacement amount of the pressing portion 70, that is, with a small operation amount of the pressing member 7.

The pressing portion 70 may be capable of contacting the entire upper surface of the lid portion 30 in the predetermined radial direction. In this case, the pressing portion 70 can deform at least the entire area of the lower surface of the lid portion 30 in the predetermined radial direction toward the inside of the recess 26. As a result, the volume of the pump chamber 11 can be efficiently reduced, and the amount that can be discharged from the pump chamber 11 can be increased with a small displacement amount of the pressing portion 70, that is, with a small operation amount of the pressing member 7.

A part of the pressing portion 70 may be kept in a non-contact state with the lid portion 30 during the deformation of the lid portion 30. In this case, the friction between the pressing portion 70 and the lid portion 30 can be reduced and the deformation of the lid portion 30 can be smoothed. When a portion of the lid portion 30 is pressed, the other portion of the lid portion 30 is pulled and deformed by the tension. Therefore, it is possible to deform not only the above-mentioned part of the lid portion 30 but also the whole.

A part of the pressing portion 70 may be capable of abutting on the center side in the radial direction on the surface of the lid portion 30. In this case, since the bias of the tension in the surface of the lid portion 30 is suppressed, the friction between the pressing portion 70 and the lid portion 30 can be reduced, and the deformation of the lid portion 30 can be smoothed. When the center side of the surface of the lid portion 30 is pushed, the outer peripheral edge side of the lid portion 30 is pulled by the tension toward the center side and is deformed. Therefore, it is easy to efficiently deform the lid portion 30.

A part of the pressing portion 70 may be capable of abutting on the outer peripheral edge side in the radial direction on the surface of the lid portion 30. In this case, not only the center side of the surface of the lid portion 30 but also the outer peripheral edge side is pushed, so that the entire lid portion 30 is easily deformed.

Specifically, as shown in FIG. 7, the area A including the tip of the pressing portion 70 in the plan view of the lever 71 can press the lid portion 30. A part of the area A is on the center side in the radial direction of the surface of the lid 30, and another part of the area A is on the outer peripheral side of the surface of the lid 30 in the radial direction. Good. In this case, the entire lid portion 30 is easily deformed by pressing both the center side and the outer peripheral side.

The dimension of the region A in the plate width direction perpendicular to the longitudinal direction of the lever 71 is larger than the radius of the lid portion 30. The area A can contact the lid portion 30. In other words, the minimum dimension of the recessed portion 26 of the lid portion 30 that can be pressed by the pressing portion 70 in plan view (corresponding to the dimension of the area A in the plate width direction) is larger than the radius of the lid portion 30. .. Therefore, many regions of the lid portion 30 can be pushed by the pressing portion 70, so that the entire lid portion 30 is easily deformed. Further, since the center of the lid portion 30 is included in the region that the pressing portion 70 can press, the lid portion 30 can be easily and efficiently deformed.

The outer edge of the region A of the lever 71 in the plate width direction is located closer to the outer edge of the lid 30 than the midpoint P between the outer edge and the center of the lid 30. In other words, the outer edge of the region of the lid portion 30 that the pressing portion 70 can press is closer to the outer peripheral edge side of the lid portion 30 than the midpoint P. Therefore, the region including the outer peripheral edge side of the lid portion 30 can be pushed by the pressing portion 70, so that the entire lid portion 30 is easily deformed.

At the maximum stroke position of the pressing member 7, a gap between the lid 30 and the bottom surface 260 of the recess 26 is allowed. At the maximum stroke of the pressing member 7, if the gap is small, the amount that can be discharged from the pump chamber 11 can be efficiently increased. The volume of the gap at the maximum stroke position may be, for example, 5% or less, or 2% or less, with respect to the maximum discharge amount from the pump chamber 11. In these cases, the amount that can be discharged from the pump chamber 11 can be effectively increased. The pressing member 7 may be capable of abutting a part of the lid portion 30 on the bottom surface 260 of the recess 26. For example, the pressing member 7 may be capable of contacting the lower surface of the lid portion 30 with more than half the area of the bottom surface 260 of the recess 26, and at least a part of the lower surface of the lid portion 30 and the bottom surface of the recess 26. It may be possible to bring the 260 and the surface into contact with each other. In any case, the gap can be reduced more reliably.

The recess 26 may have a shape that gradually becomes deeper from the outer peripheral edge of the recess 26 toward the center side. In this case, while maintaining the volume of the recess 26, the gap between the cover 30 and the bottom surface 260 of the recess 26 can be easily formed in the outer peripheral edge of the recess 26 and in the vicinity thereof without forcibly deforming the cover 30. Can be made smaller. For example, at the time of maximum stroke of the pressing member 7, the gap can be reduced at the outer peripheral edge of the concave portion 26 and in the vicinity thereof to increase the amount that can be discharged from the pump chamber 11. For example, the recess 26 may be recessed like a watch glass.

A portion of the bottom surface 260 of the recess 26 facing the tip of the pressing portion 70 with respect to a portion having a large distance (depth) from the opening 261 is a tip portion of the pressing portion 70 with respect to a portion of the bottom surface 260 having a small distance (depth). The distance (height) to the lever 71 may be larger than that of the facing portion. In other words, the portion of the bottom surface 260 of the recess 26 facing the tip of the pressing portion 70 with respect to the portion having a large distance (depth) from the opening 261 is the pressing portion with respect to the portion of the bottom surface 260 having the small distance (depth). The distance that can enter the concave portion 26 from the opening 261 may be larger than that of the facing portion of the tip end of 70. In this case, even if the depth of the concave portion 26 varies depending on the radial position in the concave portion 26, the tip of the pressing portion 70 and the bottom surface 260 of the concave portion 26 are formed at any part of the pressing portion 70 at the maximum stroke of the pressing member 7. It is possible to reduce the distance between. This makes it possible to reduce the gap between the lid portion 30 and the bottom surface 260 of the recess 26 and increase the amount that can be discharged from the pump chamber 11.

The pressing portion 70 may have a shape corresponding to the recess 26. For example, at least a part of the tip of the pressing portion 70 may have a shape along the bottom surface 260 of the recess facing each other in the rotation direction of the lever 71. In this case, it is easy to reduce the gap between the lid portion 30 and the bottom surface 260 of the recess 26 at the maximum stroke of the pressing member 7 regardless of the radial position of the recess 26.

Specifically, the curvature of at least a part of the front end surface of the pressing portion 70, that is, the envelope surface 700 may be equal to the curvature of the facing portion of the bottom surface 260. In this case, the lower surface of the lid portion 30 deformed to follow the envelope surface 700 approaches the bottom surface 260 of the recess 26, and the gap between the lid portion 30 and the bottom surface 260 of the recess 26 at the maximum stroke of the pressing member 7 is reduced. It is possible to Further, the entire curvature of the envelope surface 700 may be equal to the curvature of the facing portion of the bottom surface 260. In this case, it is possible to reduce the gap at the maximum stroke of the pressing member 7 regardless of the radial position of the recess 26. Note that the curvature of at least a part of the envelope surface 700 may be equal to or larger than the curvature of the facing portion of the bottom surface 260. In this case, the lid 30 can easily approach the bottom surface 260 of the recess 26. On the contrary, the curvature of at least a part of the envelope surface 700 may be equal to or less than the curvature of the facing portion of the bottom surface 260. In this case, it is easy for the pressing portion 70 to come into contact with a wider range in the radial direction of the lid portion 30 when the pressing member 7 has the maximum stroke.

The pressing portion 70 may have a striped uneven shape, that is, a plurality of plate portions 701. In this case, the pressing portion 70 can be thinned, and the difference in thickness between the parts of the pressing member 7 can be reduced. Therefore, when the pressing member 7 is made of resin, it is possible to suppress shrinkage, that is, decrease in the amount of meat, and improve moldability. The side of the pressing member 7 opposite to the lid 30 side, that is, the upper surface side does not become recessed due to the contraction, and for example, the shape of the upper surface can be made flat, so that the appearance can be improved.

At least a part of the tip end of each plate portion 701 forming the pressing portion 70 or the envelope surface 700 thereof, that is, the tip end surface of the pressing portion 70 may have a shape along the facing portion of the bottom surface 260 of the recess 26. In this case, it is easy to deform the lid portion 30 into a shape along the bottom surface 260 of the recess 26. For example, the curvature of at least a part of the tip surface of each plate portion 701 or the envelope surface 700 thereof, that is, the tip surface of the pressing portion 70 may be equal to the curvature of the facing portion of the bottom surface 260.

Note that the pressing portion 70 may have a single convex portion that protrudes toward the lid portion 30 side, instead of having the streak-shaped irregularities. In this case, the difference between the plate thickness of the convex portion and the plate thickness of the other portion may be reduced by forming the convex portion on the side opposite to the lid 30. This also makes it possible to suppress the shrinkage of the pressing member 7.

The biasing unit 8 may be capable of pressing the lid portion 30 toward the side where the volume of the pump chamber 11 is large. In this case, even if the amount of deformation of the lid portion 30 from the initial state due to being pressed by the pressing portion 70 becomes large, the lid unit 30 is brought into the initial state by the biasing unit 8 regardless of the elastic restoring force of the lid portion 30. By biasing the lid portion 30 toward, the lid portion 30 can be easily returned to the initial state. For example, even if the viscosity of the liquid inside the pump chamber 11 is high, the biasing unit 8 can more reliably and promptly return the lid 30 to the initial state. The urging unit 8 is not limited to the coil spring 80 and may have a leaf spring or the like as the urging member.

A part where the pressing part 70 presses the lid part 30 when the pressing member 7 strokes from the initial position, and a part of the lid part 30 where the biasing unit 8 can press, specifically, the locking part 34 and its vicinity. And may overlap in the rotation direction of the lever 71. In this case, when the pressing member 7 strokes from the initial position, the portion of the lid 30 that is pressed by the urging unit 8 is pressed by the pressing unit 70, so that the pressing unit 70 moves more directly to the urging unit 8. Force is input. Therefore, it is easy to deform the lid 30 toward the bottom surface 260 of the recess 26. Further, the operation of the biasing unit 8 can be smoothed. In particular, when the urging unit 8 has the coil spring 80 as the urging member, a force acts in the direction along the axis of the coil spring 80, so that the coil spring 80 can be contracted smoothly. Further, when the urging unit 8 has the supporting members 81 and 82 that slide with each other, these supporting members 81 and 82 can slide smoothly.

The biasing unit accommodating hole 27 may be opened on the bottom surface 260 of the recess 26. In this case, by storing the biasing unit 8 in the biasing unit housing hole 27, it is possible to secure a large size of the biasing member, so that it is possible to easily obtain an appropriate biasing force. Further, it becomes easy to support the biasing unit 8 inside the housing 2.

As shown in FIGS. 8 and 9, the pressing portion 70 presses the lid portion 30 to elastically deform the lid portion 30 so that a part of the lid portion 30 can be inserted into the urging unit accommodation hole 27. Good. In this case, the other part of the lid portion 30 can be brought closer to the bottom surface 260 of the recess 26. The above-mentioned part of the lid portion 30 that enters the inside of the urging unit accommodation hole 27 may be the locking portion 34. Specifically, the locking portion 34 is located at a position facing the opening of the biasing unit housing hole 27 in the bottom surface 260 of the recess 26 in the rotation direction of the lever 71. The outer diameter of the locking portion 34 is smaller than the diameter of the opening of the urging unit housing hole 27. The height or shape of the pressing portion 70 may be set so that the locking portion 34 can enter inside from the opening of the urging unit accommodation hole 27. In this case, it is possible to prevent the gap between the lid portion 30 and the bottom surface 260 from becoming large due to being obstructed by the locking portion 34, and thus it is possible to reduce the gap at the maximum stroke.

Since the dispenser 1 includes the elastically deformable lid portion 30, it is possible to increase the diameter of the pump chamber 11, while it is relatively large in order to deform the lid portion 30 and reduce the volume of the pump chamber 11. Power is needed. In addition, when the dispenser 1 includes the biasing unit 8, a force against the force of the biasing unit 8 to reduce the volume of the pump chamber 11 is required. Further, in order to deform the lid portion 30 and bring it closer to the bottom surface 260 of the recess 26, a larger force is required. On the other hand, the dispenser 1 may further include a lever 71 rotatable with respect to the housing 2 as a dispenser body, and the pressing portion 70 may have a convex shape protruding from the lever 71 to the lid portion 30 side. In this case, when the pressing portion 70 is displaced by the lever 71, the convex pressing portion 70 can press the lid portion 30 toward the inside of the concave portion 26 and elastically deform it. At this time, the force of the pressing portion 70 pressing the lid portion 30 is amplified by the action of the lever. It becomes easy to push the pressing member 7 down to the maximum stroke position and bring the lid 30 closer to the bottom surface 260 with a small operating force.

The lever 71 may have a hinge portion 711 and a grip portion 712. The hinge portion 711 may be at one end in the longitudinal direction of the lever 71, and the grip portion 712 may be at the other end in the longitudinal direction of the lever 7. In this case, the hinge part 711 functions as a fulcrum, the grip part 712 functions as a force point, and the pressing part 70 between the hinge part 711 and the grip part 712 may function as an action point. Therefore, it is possible to suppress the lever 71 from projecting outward in the radial direction of the lid portion 30 in a state where the pressing portion 70 faces the lid portion 30, so that the dispenser 1 can be downsized. The shape of the lever 71 is not limited to the illustrated example. The fulcrum of the lever 71 or the arrangement of the force point is arbitrary. For example, the force point (the grip portion 712) of the lever 71 is on the nozzle portion 23 side, and the fulcrum (the hinge portion 711) is on the opposite side to the nozzle portion 23 side. Good.

In a side view of the recess 26, the fulcrum of the lever 71 may be located at a height between the opening 261 and the deepest part of the recess 26. In other words, the hole 710 as the fulcrum of the lever 71 and the protrusion 231 may be at a height overlapping the recess 26. In this case, when the rotation angle of the lever 71 from the initial position to the maximum stroke position is the same as in the case where the fulcrum is at a height different from the above height, for example, above or below the recess 26, the gripping portion of the lever 71 is common. The height of the initial position of 712 is low. In other words, the pressing portion 70 can be pushed down by a relatively small stroke amount of the lever 71 to bring the lid portion 30 closer to the bottom surface 260. Therefore, upsizing of the dispenser 1 can be suppressed.

The fulcrum of the lever 71 may be on the opening 261 side of the recess 26. In this case, the hinge portion 711 can be downsized. Further, the fulcrum of the lever 71 may be on the nozzle portion 23 side and at a height overlapping the nozzle portion 23. In this case, since a part of the housing 2 that is continuous with the nozzle portion 23 can be used as a fulcrum of the lever 71, the dispenser 1 can be prevented from becoming complicated or large.

The lever 71 and the pressing portion 70 may be integrated. In this case, the input to the lever 71 can be directly transmitted to the pressing portion 70 with a simple structure. Specifically, the lever 71 and the plate portion 701 may be integrated. In this case, the plate portion 701 can reinforce the lever 71. Specifically, the plate portion 701 may extend in the longitudinal direction of the lever 71, that is, along a straight line connecting the fulcrum of the lever 71 and the force point. In this case, the plate portion 701 functions as a rib that suppresses bending deformation between the fulcrum of the lever 71 and the force point, the strength of the lever 71 can be improved, and the input to the lever 71 can be performed via the plate portion 701. It can be efficiently transmitted to the lid 30.

The pressing unit 70 may include a protrusion 702 protruding from a tip end surface of a part of the plurality of plate units 701. The protrusion 702 projects from the tip end surface of the pressing portion 70, that is, the envelope surface 700. In this case, even when the pressing portion 70 is provided on the lever 71, by disposing the protrusion 702 so as to contact the central portion on the upper surface of the lid portion 30 at the initial position of the lever 71, for example, the pressing member 7 travels from the initial position. In doing so, it becomes easy to overlap the portion where the pressing portion 70 presses the lid portion 30 and the portion of the lid portion 30 where the biasing unit 8 can push in the rotation direction of the lever 71. The grip portion 712 side of the protrusion 702 may have a convex curved shape when viewed from the rotation axis direction of the lever 71. In this case, the protrusion 702 can be stably brought into contact with the upper surface of the lid portion 30 according to the stroke of the lever 71.

Further, as shown in FIGS. 8 and 9, the pressing portion 70 may be provided so that the protrusion 702 can be inserted into the urging unit accommodation hole 27. In this case, another portion at the tip of the plate portion 701, that is, the envelope surface 700 can be brought closer to the bottom surface 260 of the recess 26. This makes it possible to reduce the gap between the lid portion 30 and the bottom surface 260 that have been deformed into a shape that follows the envelope surface 700. Specifically, the height or shape of the pressing portion 70 may be set so that the protrusion 702 can enter the inside of the urging unit accommodation hole 27.

<Second Embodiment>
10 to 12 show the configuration of the dispenser 1 of this embodiment. The present embodiment shows an example of the dispenser 1 in which the pressing member 7 is not provided integrally with the lever and the pressing member 7 functions as it is as a pressing portion. The same components as those in the first embodiment are designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. For simplification, illustration of the intake valve 4, the discharge valve 5 and the biasing unit 8 is omitted in FIG.

The pressing member 7 is in the shape of a watch glass, is circular in a plan view, and its diameter is substantially equal to the diameter of the lid portion 30. A depression 72 is formed on the upper surface side of the pressing member 7. The lower surface 73 of the pressing member 7 faces the upper surface of the lid portion 30 and functions as a pressing portion. The lower surface 73 has a shape that bulges toward the lid portion 30, has a curved surface shape in which a part of a spherical surface is cut off, and has a curvature equal to that of a facing portion of the bottom surface 260, for example. A cylindrical locked portion 74 projects from the central portion of the lower surface 73. A cylindrical locking portion 32 projects from the central portion of the upper surface of the lid portion 30. The pressing member 7 is installed on the lid 30. The locking portion 32 of the lid 30 fits into the locked portion 74 of the pressing member 7.

The user can push down the pressing member 7 downward by placing a part of the hand, for example, a finger in the recess 72, for example. The lid portion 30 is deformed into a shape that follows the lower surface 73 of the pressing member 7. At the maximum stroke position, the range including the outer peripheral edge or the vicinity thereof on the upper surface of the lid portion 30 contacts the lower surface 73 of the pressing member 7, and the entire surface of the lid portion 30 may be deformed toward the inside of the recess 26. .. At the maximum stroke position, the gap between the lid portion 30 and the bottom surface 260 of the recess 26 is minimized, and the lower surface of the lid portion 30 follows the bottom surface 260.

<Third Embodiment>
FIG. 13 is a sectional view similar to FIG. 8, showing the configuration of the dispenser 1 of the present embodiment. Hereinafter, configurations common to those of the first embodiment will be assigned the same reference numerals as those of the first embodiment, and description thereof will be omitted.
The present embodiment shows an example of the dispenser 1 in which the curvature of the tip end surface of the pressing portion 70 differs between the fulcrum side of the lever 71 and the force point (grip 712) side.

The locking portion 34 is not provided on the lid portion 30. The mounting member 6 is provided integrally with the housing 2. The grip portion 24 of the housing 2 is plate-shaped and has a bent shape. The grip portion 24 has a portion that extends in the radial direction of the disk portion 20 and a portion that bends with respect to this portion and that extends downward. A cap 230 is installed at the tip of the nozzle portion 23. The hinge portion 711 of the lever 71 is rotatably supported between the cap 230 and the housing 2. That is, the fulcrum of the lever 71 is on the nozzle portion 23 side with respect to the shaft 250 of the disk portion 20 or the like. The lid 30 may be provided with the locking portion 34, and the mounting member 6 may be provided separately from the housing 2. Further, the fulcrum of the cap 230 or the lever 71 may have the same structure as that of the first embodiment.

The pressing portion 70 is composed of a plurality of, for example, seven plate portions 701. Although the plate portion 701 is not provided with the protrusion 702, it may be provided similarly to the first embodiment. Of the front end surface of each plate portion 701, that is, the envelope surface 700, the region on the side of the fulcrum of the lever 71 in the longitudinal direction connecting the fulcrum of the lever 71 and the force point has a shape along the facing portion of the bottom surface 260, and the bottom surface 260. Has a curvature equal to that of the facing portion. On the other hand, a region of the envelope surface 700 on the side opposite to the fulcrum of the lever 71 in the longitudinal direction of the lever 71, in other words, on the grip portion 712 side, has a larger curvature than the facing portion of the bottom surface 260. In other words, at the maximum stroke position of the lever 71 shown in FIG. 13, of the tip end surface of each plate portion 701, that is, the envelope surface 700, the region on the fulcrum side of the lever 71 with respect to the shaft 250 of the disk portion 20 or the like is the bottom surface. It has a curvature equal to that of the facing portion of 260. On the other hand, in the envelope surface 700, the region on the opposite side of the fulcrum of the lever 71 with the shaft 250 sandwiched, in other words, the region of the grip portion 712 with respect to the shaft 250 has a larger curvature than the facing portion of the bottom face 260. Have. In this way, the shape of the envelope surface 700, that is, the tip end surface of the pressing portion 70 is provided. Accordingly, during the stroke of the lever 71, the elastic deformation amount of the lid portion 30 becomes smaller on the side farther from the side closer to the fulcrum of the lever 71. As shown in FIG. 13, at the maximum stroke position of the lever 71, the gap between the lid portion 30 and the bottom surface 260 of the concave portion 26 becomes the minimum, but at least a part of the grip portion 712 side with respect to the shaft 250. In the area, a gap may occur between the lid portion 30 and the bottom surface 260.

In this way, the shape of the tip surface of the pressing portion 70, specifically, the tip of each plate portion 701, is set so that the elastic deformation amount of the lid portion 30 becomes smaller on the side farther than the side closer to the fulcrum of the lever 71. The shape of the surface or envelope 700 may be provided. In this case, the reaction force transmitted from the lid portion 30 to the lever 71 is suppressed on the side farther from the fulcrum of the lever 71, in other words, at the portion where the side effect of increasing the force by the lever 71 is relatively small. It Therefore, it is possible to reduce the operating force for discharging the liquid material from the dispenser 1 using the lever 71.

A region of the tip surface of the pressing portion 70 on the side of the fulcrum of the lever 71 has a curvature equal to that of the facing portion of the bottom surface 260, and a region on the side opposite to the side of the fulcrum of the lever 71 is of the facing portion of the bottom surface 260. It may have a curvature greater than the curvature. In other words, when viewed at the maximum stroke position of the lever 71, the curvature of the tip surface of the pressing portion 70 and the curvature of the opposing portion of the bottom surface 260 are on the fulcrum side of the lever 71 and on the opposite side with the shaft 250 interposed therebetween. The shape of the tip surface of the pressing portion 70 may be provided so that the difference is different. Specifically, the shape of the tip end surface of the pressing portion 70 is set so that the opposite side (the side of the grip portion 712, which is the force point of the lever 71) of the fulcrum side of the lever 71 has a larger curvature difference. It may be provided. This makes it possible to make the amount of elastic deformation of the lid portion 30 pressed by the pressing portion 70 smaller on the side farther from the side closer to the fulcrum of the lever 71, while making the shape of the bottom surface 260 symmetrical with respect to the axis 250. .. In particular, when the plate portion 701 of the pressing portion 70 is not provided with the protrusion 702, the elastic deformation amount of the lid portion 30 can be more reliably reduced on the side farther from the fulcrum of the lever 71.

When the above-mentioned curvature difference is made different between the side of the fulcrum of the lever 71 and the opposite side with the shaft 250 sandwiched at the maximum stroke position in this manner, as shown in FIG. A gap may be formed between the bottom surface 260 of 26. The shape of the bottom surface 260 may be changed so that this gap becomes smaller. In other words, without changing the above-mentioned difference in curvature between the side of the fulcrum of the lever 71 and the opposite side of the shaft 250 sandwiching the shaft 250 at the maximum stroke position, the lid portion 30 is more distant from the side closer to the fulcrum of the lever 71. It is also possible to reduce the amount of elastic deformation of.

As shown in FIG. 13, at the maximum stroke position of the lever 71, at least a part of a region of the tip end face of the pressing portion 70 on the opposite side of the fulcrum of the lever 71 with the shaft 250 interposed therebetween is on the upper surface of the lid portion 30. The shape of the tip surface of the pressing portion 70 may be provided so as not to abut. That is, the shape of the tip end surface of the pressing portion 70 is provided such that at least a part of the tip end surface of the pressing portion 70 on the side opposite to the fulcrum side of the lever 71 is separated from the upper surface of the lid portion 30. May be. In this case, the reaction force transmitted from the lid portion 30 to the lever 71 can be more effectively suppressed on the side farther than the side closer to the fulcrum of the lever 71.

The dispenser 1 may be provided so that the lever 71 can be pushed down with a finger. For example, the housing 2 as the dispenser body may have the grip portion 24. In this case, it is easy for the user to hold the grip portion 24 of the housing 2 and the grip portion 712 of the lever 71 with one hand and push down the grip portion 712 of the lever 71 with, for example, the thumb. As described above, when the user has a structure in which the lever 71 can be pushed down by the force of the finger instead of the entire hand, the above-described advantage that the operating force of the lever 71 is reduced by the shape of the tip surface of the pressing portion 70 is more effective. Can be obtained. The grip 24 facing the grip 712 of the lever 71 may be provided not in the dispenser 1 but in the container 100 attached to the dispenser 1.

Although the preferred embodiments of the present invention have been described above in detail with reference to the accompanying drawings, the technical scope of the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field of the present invention can come up with various changes or modifications within the scope of the technical idea described in the scope of claims. It is understood that the above also naturally belongs to the technical scope of the present invention.

Regarding the above-described embodiment, the present invention further discloses the following dispenser or discharge container.

<1>
A dispenser capable of discharging a liquid substance from a discharge port, a dispenser body having a recess, an elastically deformable lid that covers an opening of the recess and forms a pump chamber together with the recess, and an outside of the pump chamber. Is arranged so as to face the lid portion, and the lid portion can be pressed to the side where the volume of the pump chamber becomes smaller, and the lid portion can be pressed and elastically deformed to enter the inside of the concave portion. A pressing portion provided in, when the pressing portion presses the lid portion, an outlet for flowing out the liquid substance inside the pump chamber toward the discharge port, and the outlet are provided separately, A dispenser, comprising: an inlet for introducing a liquid material into the pump chamber when the pressing of the lid by the pressing portion is released.

<2>
The dispenser body according to <1>, further including a suction port that communicates with the inflow port, and sucking a liquid substance into the pump chamber from the suction port through the inflow port.
<3>
The dispenser according to <2>, wherein the pump chamber is provided on a passage that connects the suction port and the discharge port.
<4>
The dispenser according to <2> or <3>, further including a suction valve that blocks communication between the suction port and the inflow port when the pressing unit presses the lid.
<5>
The discharge valve according to any one of <1> to <4>, further comprising a discharge valve that blocks communication between the discharge port and the outflow port when the pressing of the lid part by the pressing part is released. Dispenser.
<6>
The dispenser according to any one of <1> to <5>, wherein the outflow port and the inflow port are provided in the pump chamber.
<7>
The dispenser according to any one of <1> to <6>, wherein the outflow port and the inflow port are opened on the bottom surface of the recess.
<8>
The dispenser according to any one of <1> to <7>, wherein the opening area of the outflow port is smaller than the opening area of the inflow port.

<9>
The said lid part is a dispenser as described in any one of said <1>-<8> which bulges on the side opposite to the said recessed part side.
<10>
The said pressing part is a dispenser as described in any one of said <1>-<9> which has a shape corresponding to the said recessed part.
<11>
Any one of the above items <1> to <10>, in which the lid portion pressed by the pressing portion is elastically deformed into a shape along the recess while the pressing portion is inside the recess. Dispenser according to item.
<12>
The <1> to <11> are provided so that 1/3 or more of the lid portion can enter the inside of the recess by the pressing portion pressing and elastically deforming the lid portion. The dispenser according to any one of claims.
<13>
The dispenser according to <12>, wherein the pressing portion presses the lid portion to elastically deform the lid portion so that half or more of the lid portion can enter the inside of the recess.

<14>
The dispenser according to any one of <1> to <13>, wherein the recess gradually becomes deeper from the outer peripheral edge of the recess toward the center side.
<15>
The said recessed part is a dispenser as described in said <14> which is depressed like a watch glass.
<16>
The bottom surface of the said recessed part is a dispenser as described in any one of said <1>-<15> which is circular shape by planar view.

<17>
The dispenser according to any one of <1> to <16>, wherein at least a part of a tip end surface of the pressing portion has a shape along a bottom surface of the facing concave portion.
<18>
The dispenser according to <1> to <17>, wherein the curvature of at least a part of the tip surface of the pressing portion is equal to the curvature of the bottom surface of the facing concave portion.
<19>
The said pressing part is a dispenser as described in any one of said <1>-<18> provided with the protrusion which protrudes from the front end surface of the said pressing part.

<20>
In any one of the above items <1> to <19>, further comprising a lever rotatable with respect to the dispenser body, wherein the pressing portion has a convex shape protruding from the lever toward the lid portion. The dispenser described.
<21>
The dispenser according to <20>, wherein a dimension of a region including a tip of the pressing portion in a plan view of the lever in a plate width direction perpendicular to a longitudinal direction of the lever is larger than a radius of the lid portion.
<22>
The outer edge of the area including the tip of the pressing portion in a plan view of the lever in the plate width direction perpendicular to the longitudinal direction of the lever is more than the midpoint between the outer peripheral edge and the center of the lid portion. The dispenser according to <20> or <21>, which is on the side of the outer peripheral edge of the lid portion.
<23>
The shape of the tip end surface of the pressing portion is provided so that the elastic deformation amount of the lid portion is smaller on the side farther than the side closer to the fulcrum of the lever. The dispenser according to any one of claims.
<24>
Of the tip surface of the pressing portion, a region on the side of the fulcrum of the lever has a curvature equal to that of the bottom face of the recessed portion that faces the lever, and a region on the side opposite to the side of the fulcrum of the lever of the depression portion that faces the recessed portion. The dispenser according to any one of <20> to <23>, which has a curvature larger than that of the bottom surface.
<25>
The shape of the tip end surface of the pressing portion is provided so that at least a part of the tip end surface of the pressing portion opposite to the fulcrum side of the lever is separated from the upper surface of the lid portion. , The dispenser according to any one of <20> to <24>.
<26>
The dispenser according to any one of <20> to <25>, wherein a fulcrum of the lever is located at a height between the opening and the deepest part of the recess in a side view of the recess.
<27>
The lever has a hinge part and a grip part, the hinge part is at one end in the longitudinal direction of the lever, and the grip part is at the other end in the longitudinal direction of the lever. The dispenser according to any one of 26>.

<28>
The said press part is a dispenser as described in any one of said <1>-<27> which has the shape which hollowed out one convex part in several streak shape, and consists of several board part.
<29>
The dispenser according to <28>, wherein the tip end surface of the pressing portion is an envelope surface that passes through the tip ends of the plurality of plate portions.

<30>
A discharge container comprising the dispenser according to any one of <1> to <29>, and a container that stores the liquid material.

1 Dispenser 11 Pump Room 111 Inlet 112 Outlet 12 Discharge Port 2 Housing (Dispenser Main Body)
231 Protrusion (fulcrum)
26 recessed part 260 bottom face 261 opening part 27 biasing unit housing hole 30 lid part 70 pressing part 71 lever 710 hole (fulcrum)
8 urging unit

Claims (10)

A dispenser capable of discharging a liquid substance from a discharge port,
A dispenser body having a recess,
An elastically deformable lid that covers the opening of the recess and forms a pump chamber with the recess,
The lid portion is arranged outside the pump chamber so as to face the lid portion, and the lid portion can be pressed to the side where the volume of the pump chamber becomes smaller. A pressing portion provided so that it can enter,
When the pressing part presses the lid part, an outlet for flowing out a liquid substance inside the pump chamber toward the discharge port,
An inlet provided separately from the outlet, for introducing a liquid substance into the pump chamber when the pressing of the lid by the pressing portion is released;
With
Dispenser. The dispenser according to claim 1, wherein the lid portion bulges out to the side opposite to the concave portion side. The dispenser according to claim 1 or 2, wherein the pressing portion has a shape corresponding to the recess. The lid part pressed by the pressing part is elastically deformed into a shape along the concave part in a state where the pressing part enters the inside of the concave part. Dispenser. The 1st or more of the said lid part is provided so that it can enter in the inside of the said recessed part by the said press part pressing the said lid part and making it elastically deform|transform, It is provided in any one of Claims 1-4. Dispenser according to item. The dispenser according to claim 1, wherein the recess gradually becomes deeper from the outer peripheral edge of the recess toward the center side. Further comprising a biasing unit that is disposed inside the dispenser body and is capable of pressing the lid portion on the side where the volume of the pump chamber increases.
A hole for accommodating a part of the biasing unit is opened at the bottom of the recess,
7. The pressing portion presses the lid portion to elastically deform the lid portion so that a part of the lid portion can enter the inside of the hole. The dispenser described. Further comprising a lever rotatable with respect to the dispenser body,
The dispenser according to any one of claims 1 to 7, wherein the pressing portion has a convex shape that protrudes from the lever toward the lid portion. The dispenser according to claim 8, wherein a fulcrum of the lever is located at a height between the opening and the deepest part of the recess in a side view of the recess. The dispenser according to claim 8 or 9, wherein the shape of the tip surface of the pressing portion is provided so that the elastic deformation amount of the lid portion is smaller on the side farther from the fulcrum of the lever. ..

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