JP7361619B2 - Dispenser - Google Patents

Description

The present invention relates to a dispensing device.

Conventionally, as shown in, for example, Patent Document 1 below, there has been a pump having a stem that is vertically disposed at the mouth of a container housing a liquid therein so as to be movable downward in an upward biased state, and a pump that has a stem that is movable downwardly in an upwardly biased state. It has a mounting cylinder mounted thereon, a push-down head in which a nozzle hole is formed, and a mounting cap for mounting the pump on the mouth. A discharge device is known that discharges the liquid content from a nozzle hole through a stem by moving the stem downward and activating a pump.
Generally, the biasing member that biases the stem upward is formed of a metal material and is housed within the cylinder of the pump.

Japanese Patent Application Publication No. 2016-123927

However, when disposing of conventional discharge devices, it is difficult to remove the biasing member from the cylinder, and it is difficult to separate the biasing member made of metal material from other components made of synthetic resin material. there were.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a dispensing device that can eliminate the need for sorting at the time of disposal.

The dispensing device of the present invention includes a pump having a stem that is vertically movable downwardly in an upwardly biased state at the mouth of a container housing a liquid content, and a mounting cylinder that is attached to the upper end of the stem. and a push-down head in which a nozzle hole is formed, and a mounting cap for mounting the pump on the mouth, and when the pump is mounted on the mouth, the push-down head is pressed down to move the stem downward. The dispensing device is configured to discharge the content liquid from the nozzle hole through the stem by moving the liquid to the stem and activating the pump, the pump surrounding the mounting cylinder portion from the outside in the radial direction, and discharging the content liquid from the nozzle hole through the stem. A biasing member made of synthetic resin has a lower end that is non-rotatably engaged with the cylindrical portion and biases the stem upward, and the mounting cap is configured to a support part that supports the lower end part from below; one of the upper surface of the support part and the lower face of the lower end part of the biasing member includes a protrusion protruding toward the other; , comprising an inclined surface that moves the lower end of the biasing member upward by sliding of the protrusion when the push-down head is rotated in the circumferential direction with respect to the mounting cap. shall be.

According to the present invention, since the biasing member is made of a synthetic resin material, there is no need to separate the biasing member from other members made of synthetic resin material when disposing of the discharge device. .
When the push-down head is rotated with respect to the mounting cap, the biasing member provided non-rotatably with respect to the mounting cylinder portion of the push-down head also rotates, and the protrusion slides on the inclined surface. This causes the lower end of the biasing member to move upward, thereby compressing the biasing member. Therefore, the push-down head is urged upward by the urging member and can be pushed down, allowing the pump to operate.
Here, it is possible to compress the biasing member by arranging the biasing member in its natural length and rotating the push-down head when using the ejector. For this reason, since the biasing member is made of a synthetic resin material, if a compressive force in the vertical direction is applied to the biasing member for a long period of time, there is a risk that the biasing member will become compressively deformed. By distributing, storing, etc. without applying vertical compressive force to the material, the biasing member does not develop a habit of compressive deformation (plastic deformation) during this period, and when using the dispenser, the biasing member This can prevent elastic deformation from becoming difficult.
In addition, when the user is using the device, it is possible to rotate the push-down head and return it to the position before starting use. For example, when storing the dispenser after using it, the push-down head can be returned to the position before starting use. For example, it is possible to reduce the load applied to the biasing member and maintain a good biasing force by the biasing member over a long period of time.

In the above-mentioned discharger, the one side may have an opposing inclined surface that is continuous with the protrusion in the circumferential direction and abuts on the inclined surface.

According to the present invention, since the inclined surface and the opposing inclined surface abut each other while facing each other in the circumferential direction, the lower end portions of the mounting cap and the biasing member rotate relative to each other in a direction in which the inclined surface and the opposing inclined surface approach each other. can be restrained from doing so. Therefore, displacement of the lower end portion of the biasing member can be suppressed.

According to the present invention, separation at the time of disposal can be made unnecessary.

FIG. 2 is a longitudinal half-sectional view of the ejector according to the embodiment, showing a state in which the push-down head is located at a regulating position. 2 is a diagram showing a cross section taken along the line II-II in FIG. 1. FIG. It is a cross section along the circumferential direction of the principal part of the ejector concerning an embodiment, and is a sectional view showing a state where a push-down head is located in a regulation position. FIG. 2 is a longitudinal half-sectional view of the ejector according to the embodiment, showing a state in which the push-down head is located at a standby position. FIG. 3 is a cross-sectional view of a main part of the ejector according to the embodiment along the circumferential direction, showing a state in which the push-down head is located at a standby position.

EMBODIMENT OF THE INVENTION Hereinafter, embodiments of the ejector 1 according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the discharge device 1 of this embodiment includes a pump 2 having a stem 21, a push-down head 5 attached to the stem 21, and a pump 2 connected to the mouth of a container body A containing liquid. A mounting cap 7 to be mounted on A1 is provided.
All parts constituting the ejector 1 are made of synthetic resin material.

A center line passing through the center of the cross section of the container body A is called a container axis O, and along the container axis O, the push-down head 5 side is called the upper side, and the mounting cap 7 side is called the lower side. Further, the direction along the container axis O is referred to as the up-down direction, the direction intersecting the container axis O when viewed from the up-down direction is referred to as the radial direction, and the direction going around the container axis O is referred to as the circumferential direction. Hereinafter, unless otherwise specified, a state will be described in which the push-down head 5 is located at a restricted position in which it cannot move downward relative to the mounting cap 7.

The container body A is formed into a cylindrical shape with a bottom, and a male thread is formed on the outer peripheral surface of the opening A1.
The mounting cap 7 is formed into a capped cylindrical shape having a top wall portion 71 and a mounting peripheral wall portion 72, and is disposed coaxially with the container axis O. The top wall portion 71 is formed into an annular shape, and the stem 21 is inserted into the inside of the top wall portion 71 so as to be vertically movable. A female thread is formed on the inner circumferential surface of the mounting peripheral wall portion 72 and is screwed into the male thread of the mouth portion A1. Note that the mounting peripheral wall portion 72 may be fitted into the mouth portion A1 by, for example, an undercut fit.

The mounting cap 7 includes a guide tube 73 extending upward and downward from the inner peripheral edge of the top wall portion 71 . The guide tube 73 is arranged coaxially with the container axis O. The guide tube 73 includes an upper part 74 connected to the inner peripheral edge of the top wall part 71 and extending with a constant inner diameter, and an annular support part 75 that projects radially inward from the lower opening edge of the upper part 74 and extends along the circumferential direction. and a lower portion 76 extending downward from the inner peripheral edge of the support portion 75.

The support portion 75 supports the lower surface 41a of the lower end portion 41 of the biasing member 25 from below. The upper surface 75a of the support portion 75 has a cap side protrusion 80 that protrudes toward the lower surface 41a of the lower end portion 41 of the biasing member 25 (that is, toward the upper side). A pair of cap side protrusions 80 are provided and are formed two-fold symmetrically with respect to the container axis O. The cap-side protrusion 80 is provided on the outer periphery of the upper surface 75a of the support portion 75. The specific shape of the upper surface 75a of the support portion 75 will be described later.

A regulating convex portion 77 that protrudes radially inward and extends along the circumferential direction is formed on the inner circumferential surface of the lower portion 76 of the guide tube 73, excluding the upper end. The upper surface of the regulating convex portion 77 is formed at the same height over the entire circumference. A pair of guide grooves 77a are formed on the inner circumferential surface of the regulating protrusion 77, extending in the vertical direction and opening at the upper surface of the regulating protrusion 77. The pair of guide grooves 77a are arranged at equal angular intervals around the container axis O.

As shown in FIG. 2, a locking piece 78 and a small protrusion 79 that protrude radially inward are formed on a portion of the inner circumferential surface of the lower portion 76 of the guide tube 73 above the regulating convex portion 77. There is. The locking pieces 78 are provided in the same number as the guide grooves 77a. The pair of locking pieces 78 are arranged at equal angular intervals around the container axis O. Each locking piece 78 is formed at a position shifted in the circumferential direction with respect to the guide groove 77a. The locking piece 78 is formed to have a height equal to or lower than the regulating protrusion 77 with respect to the inner circumferential surface of the lower portion 76 of the guide tube 73. Two small protrusions 79 are provided for each locking piece 78. The small protrusions 79 are formed at positions spaced apart from the locking piece 78 by a predetermined distance in the circumferential direction. The small protrusion 79 is formed lower than the locking piece 78 with respect to the inner peripheral surface of the lower part 76 of the guide tube 73. A vertical rib 55 of the push-down head 5, which will be described later, can ride over the small protrusion 79.

As shown in FIG. 1, the pump 2 includes a stem 21, a piston 22, a cylinder 23, a lower valve body 24, and a biasing member 25.
The cylinder 23 is arranged coaxially with the container axis O. The cylinder 23 is provided with a mounting tube 27 that extends downward. The upper end of the suction tube 28 is fitted into the attachment tube 27 . The lower end opening of the suction cylinder 28 is located within the bottom of the container body A. The insides of the cylinder 23 and the mounting tube 27 are in communication with each other. The cylinder 23 and the mounting tube 27 are arranged coaxially with the container axis O.

A flange portion 29 is formed at the upper end of the cylinder 23 and projects outward in the radial direction and extends in the circumferential direction. The flange portion 29 is arranged at the upper opening edge of the mouth portion A1 of the container body A with the packing 9 interposed therebetween. The lower surface of the top wall portion 71 of the mounting cap 7 is arranged on the upper surface of the flange portion 29 . A lower valve body 24 is housed within the lower end of the cylinder 23 .

The lower valve body 24 includes a fitting cylinder 31 and a valve body 32. The fitting tube 31 is fitted into the lower end of the cylinder 23. The valve body 32 is formed into a plate shape and is disposed at the periphery of the lower end opening on the inner surface of the cylinder 23 . The valve body 32 is connected to the inner peripheral surface of the fitting cylinder 31 via an elastically deformable connecting piece. The valve body 32 is arranged to be elastically displaceable in the vertical direction in response to elastic deformation of the connecting piece. As described above, the lower valve body 24 serves as a check valve that keeps the lower end opening of the cylinder 23 closed when the pressure inside the cylinder 23 is increased, and opens the lower end opening of the cylinder 23 when the pressure inside the cylinder 23 is reduced. . That is, the lower valve body 24 prevents the content liquid in the cylinder 23 from returning to the container body A through the lower end opening of the cylinder 23 when the pressure inside the cylinder 23 is increased, and when the pressure inside the cylinder 23 is reduced, the content liquid in the cylinder 23 is prevented from returning to the container body A. The liquid inside is caused to flow into the cylinder 23 through the lower end opening of the cylinder 23.

The stem 21 is erected at the mouth A1 so as to be movable downward while being biased upward. The stem 21 is formed into a cylindrical shape with a bottom, and is disposed coaxially with the container axis O. The lower part of the stem 21 is located below the upper end opening of the cylinder 23. The upper part of the stem 21 is located above the upper end opening of the cylinder 23. A communication hole 34 passing through in the radial direction is formed in the lower part of the stem 21 . The stem 21 is formed with a pedestal portion 35 that projects outward in the radial direction. The pedestal portion 35 is formed in a portion of the stem 21 located below the communication hole 34. The pedestal portion 35 supports the piston 22 from below. A seal protrusion 35a is provided on the upper surface of the pedestal portion 35, protruding upward and extending along the entire circumference in the circumferential direction.

The piston 22 includes an outer cylinder 37, an inner cylinder 38, and a flange 39, and is fitted into the cylinder 23 so as to be vertically slidable. The outer cylinder 37 is formed into a cylindrical shape and is disposed coaxially with the container axis O. The outer cylinder 37 is in sliding contact with the inner peripheral surface of the cylinder 23. In the cylinder 23, a through hole that penetrates in the radial direction is formed in a portion that faces the outer tube 37 in the radial direction. The flange 39 projects radially inward from the outer cylinder 37 and extends continuously over the entire circumference. The inner cylinder 38 is formed in a cylindrical shape and extends upward and downward from the inner peripheral edge of the flange 39 . A lower end portion of the inner cylinder 38 faces the pedestal portion 35 of the stem 21 in the vertical direction. By bringing the lower end of the inner cylinder 38 into close contact with the pedestal 35 of the stem 21 from above, the piston 22 connects the portion of the cylinder 23 located below the piston 22 and the communication hole 34 of the stem 21. communication is cut off. More specifically, by inserting the inner cylinder 38 of the piston 22 from above between the seal projection 35a and the outer peripheral surface of the stem 21, the inner cylinder 38 comes into close contact with the inner peripheral surface of the seal projection 35a, and the inner cylinder The lower end of the inner cylinder 38 is pressed radially inward and comes into close contact with the outer circumferential surface of the stem 21, and a seal is created between the lower end of the inner cylinder 38 and the pedestal 35 of the stem 21. When the stem 21 moves downward relative to the piston 22 and the pedestal portion 35 separates downward from the inner cylinder 38 of the piston 22, the portion of the cylinder 23 located below the piston 22 and the communication hole of the stem 21 34 is in communication.

The push-down head 5 is arranged to be rotatably movable relative to the mounting cap 7 between a regulation position and a standby position in which it is movable downward relative to the mounting cap 7 . In this embodiment, when the push-down head 5 is displaced from the restriction position to the standby position, the push-down head 5 is rotated clockwise around the container axis O when viewed from above with respect to the mounting cap 7. Hereinafter, the clockwise direction in the circumferential direction when viewed from above will be referred to as the release direction.

The push-down head 5 is formed into a capped cylinder shape having a top wall part 51 and an outer cylinder part 52. The push-down head 5 is arranged coaxially with the container axis O. The inner circumferential surface of the lower end of the outer cylinder portion 52 faces the outer circumferential surface of the upper end of the guide tube 73 of the mounting cap 7 in the radial direction. The push-down head 5 includes a mounting cylinder part 53 that protrudes downward from the top wall part 51, and a nozzle cylinder part 54 that extends radially outward from the mounting cylinder part 53 and radially penetrates the outer cylinder part 52. have The mounting cylinder part 53 is surrounded by the outer cylinder part 52 from the outside in the radial direction, and is arranged coaxially with the container axis O. The lower end of the mounting cylinder part 53 is located below the lower end of the outer cylinder part 52. The upper end portion of the stem 21 is mounted inside the mounting cylinder portion 53. A nozzle hole 54a that opens in the radial direction is formed at the tip of the nozzle cylinder portion 54. The inside of the nozzle cylinder part 54 communicates with the inside of the mounting cylinder part 53.

The mounting cylinder portion 53 is inserted inside the guide cylinder 73 of the mounting cap 7 . The lower end portion of the mounting tube portion 53 is arranged radially inside the regulating convex portion 77 of the guide tube 73 . The lower end opening edge of the mounting cylinder portion 53 faces the flange 39 of the piston 22 in the vertical direction. The lower end of the inner circumferential surface of the mounting cylinder portion 53 is an enlarged diameter portion 53a that is larger in diameter than other portions. The enlarged diameter portion 53a provides a gap with respect to the outer peripheral surface of the stem 21. The upper part of the inner cylinder 38 of the piston 22 is inserted from below into the gap between the enlarged diameter portion 53a and the outer peripheral surface of the stem 21. The outer peripheral surface of the inner cylinder 38 of the piston 22 is in close contact with the enlarged diameter portion 53a.

As shown in FIGS. 1 and 2, a vertical rib 55 extending in the vertical direction is formed on the outer circumferential surface of the mounting cylinder portion 53 except for the lower end. The number of vertical ribs 55 is the same as the number of guide grooves 77a of the mounting cap 7. The outer diameter of the vertical rib 55 is larger than the inner diameter of the regulating protrusion 77 of the guide tube 73 with respect to the container axis O. The lower end surface of the vertical rib 55 is in contact with the upper surface of the regulating convex portion 77 . Thereby, downward movement of the mounting cylinder portion 53 with respect to the mounting cap 7 is restricted. The vertical rib 55 is in contact with or close to the locking piece 78 from the release direction. The vertical rib 55 contacts or approaches the small protrusion 79 from a direction opposite to the release direction. Thereby, the mounting cylinder portion 53 is restricted from rotating in the opposite direction to the release direction with respect to the mounting cap 7. Further, the mounting cylinder portion 53 is given resistance to rotation in the release direction relative to the mounting cap 7 due to the resistance when the vertical rib 55 climbs over the small protrusion 79, and the push-down head 5 is held in the regulating position. .

The lower end surface of the vertical rib 55 is arranged above the guide groove 77a of the regulating convex portion 77 when the push-down head 5 is located at the standby position, and can be inserted into the guide groove 77a from above (see FIG. 4). This allows the push-down head 5 to move downward relative to the mounting cap 7. Moreover, the vertical rib 55 contacts or approaches the locking piece 78 from the opposite direction to the release direction when the push-down head 5 is located at the standby position. The vertical rib 55 contacts or approaches the small protrusion 79 from the release direction. As a result, the mounting cylinder portion 53 is restricted from rotating in the releasing direction relative to the mounting cap 7, and is provided with resistance against rotation in the opposite direction to the releasing direction relative to the mounting cap 7, and the push-down head 5 is brought to the standby position. Retained.

As shown in FIG. 1, the biasing member 25 extends in a spiral shape with a constant inner diameter. The biasing member 25 is arranged coaxially with the container axis O. The biasing member 25 surrounds the mounting cylinder portion 53 from the outside in the radial direction. An engagement groove 25 a that engages with the vertical rib 55 of the mounting cylinder portion 53 is formed on the inner circumferential surface of the biasing member 25 . The engagement groove 25a extends in the vertical direction from the lower end surface to the upper end surface of the biasing member 25. Thereby, the biasing member 25 cannot rotate relative to the push-down head 5. The biasing member 25 is provided inside the guide tube 73 in the radial direction. The biasing member 25 is disposed at its natural length. The upper end of the biasing member 25 is in contact with the push-down head 5 from below. The lower end portion 41 of the biasing member 25 is in sliding contact with the inner circumferential surface of the upper portion 74 of the guide tube 73 . The lower end portion of the biasing member 25 is in contact with the upper surface 75a of the support portion 75 of the guide tube 73 of the mounting cap 7 from above. The biasing member 25 biases the stem 21 upwardly against the mounting cap 7 via the push-down head 5 when the push-down head 5 is at the standby position and when it is lowered from the standby position. Note that the upper end portion of the biasing member 25 may be spaced downward from the push-down head 5. That is, even if the upper end of the biasing member 25 is spaced downward from the push-down head 5 when the push-down head 5 is located at the regulating position, the upper end of the biasing member 25 is separated from the push-down head 5 when the push-down head 5 is located at the standby position. It suffices if the part is configured to abut the push-down head 5 from below.

The outer periphery of the lower surface 41a of the lower end portion 41 of the biasing member 25 corresponds to the number of cap-side protrusions 80 of the mounting cap 7, and is formed two-fold symmetrically about the container axis O. As shown in FIG. 3, the outer periphery of the lower surface 41a of the lower end portion 41 of the biasing member 25 has a first opposing surface 42 that vertically faces the cap-side protrusion 80, and a first opposing surface 42 that rotates the push-down head 5 in the release direction. The cap side protrusion 80 slides to move the lower end of the biasing member 25 upward when the cap side protrusion 80 is moved. The first opposing surface 42 is formed into a planar shape that extends in the radial direction and the circumferential direction, and extends, for example, over 20 degrees around the container axis O. A cap-side protrusion 80 is in contact with the first opposing surface 42 . The first inclined surface 43 is connected to the first opposing surface 42 in the circumferential direction, and extends in an inclined direction toward the cap side protrusion 80 (ie, downward) in the vertical direction with respect to the circumferential direction. The first inclined surface 43 extends from the first opposing surface 42 in a direction opposite to the release direction. In other words, the first inclined surface 43 extends from the first opposing surface 42 in the direction of rotation of the mounting cap 7 with respect to the biasing member 25 when the push-down head 5 is rotated in the release direction.

The outer periphery of the lower surface 41a of the lower end portion 41 of the biasing member 25 includes a biasing member side protrusion 44 that is connected to the first inclined surface 43 in the circumferential direction, and a biasing member side protrusion 44 that is connected to the first inclined surface 43. A first engagement surface 45 continuous on the opposite side. The biasing member side protrusion 44 extends parallel to the first opposing surface 42 . The cap side protrusion 80 comes into contact with the biasing member side protrusion 44 when the push-down head 5 is located at the standby position (see FIG. 5). The first engagement surface 45 extends upward from the biasing member side protrusion 44 at a larger inclination angle than the first inclined surface 43 in the circumferential direction. In this embodiment, the first engagement surface 45 extends upward from the biasing member side protrusion 44 along the vertical direction.

The specific shape of the upper surface of the support portion 75 of the mounting cap 7 will be described in detail. The outer peripheral portion of the upper surface 75a of the support portion 75 corresponds to the number of the cap-side protrusions 80, and is formed two-fold symmetrically about the container axis O. The cap-side protrusion 80 is formed to have the same shape and size as the first opposing surface 42 of the biasing member 25, and to be parallel to it.

The outer periphery of the upper surface 75a of the support portion 75 is connected to a second opposing surface 81, which the urging member side protrusion 44 of the urging member 25 faces in the vertical direction, when the push-down head 5 is rotated in the release direction. The biasing member side protrusion 44 includes a second inclined surface 82 that moves the lower end of the biasing member 25 upward when the biasing member side protrusion 44 slides. The second opposing surface 81 is formed to have the same shape and size as the biasing member side protrusion 44, and to be parallel to the biasing member side protrusion 44. The biasing member side protrusion 44 is in contact with the second opposing surface 81 . The second inclined surface 82 is connected to the second opposing surface 81 in the circumferential direction, and extends in an inclined direction toward the biasing member side protrusion 44 (that is, upward) in the vertical direction with respect to the circumferential direction. The second inclined surface 82 extends from the second opposing surface 81 in the release direction. In other words, the second inclined surface 82 extends from the second opposing surface 81 in the direction of rotation of the biasing member 25 with respect to the mounting cap 7 when the push-down head 5 is rotated in the release direction. The second inclined surface 82 has the same shape and size as the first inclined surface 43 of the biasing member 25, and is formed in parallel. The second inclined surface 82 is in contact with the first inclined surface 43 of the biasing member 25 .

The outer circumferential portion of the upper surface 75a of the support portion 75 includes a second engagement surface 83 that is connected to the cap side protrusion 80 on the opposite side to the second inclined surface 82. The second engaging surface 83 extends downward from the cap-side protrusion 80 at a larger inclination angle than the second inclined surface 82 in the circumferential direction. The second engagement surface 83 has the same shape and size as the first engagement surface 45 of the biasing member 25, and is formed in parallel. The second engagement surface 83 is in contact with and faces the first engagement surface 45 of the biasing member 25 in the circumferential direction. Thus, in the present embodiment, the entire circumference of the outer circumference of the upper surface 75a of the support portion 75 of the mounting cap 7 is formed so as to overlap the entire circumference of the outer circumference of the lower surface 41a of the lower end portion 41 of the biasing member 25. ing. The lower end portion 41 of the biasing member 25 is brought into contact with the first engagement surface 45 of the biasing member 25 and the second engagement surface 83 of the mounting cap 7, so that the push-down head 5 is in a standby position. Rotation toward the opposite side (that is, rotation in the opposite direction to the release direction) is restricted.

Next, the operation of the above-mentioned ejector 1 will be explained.
When the push-down head 5 is rotated from the standby position in the release direction, the biasing member 25 rotates together with the push-down head 5 in the release direction with respect to the mounting cap 7. As a result, the cap side protrusion 80 of the mounting cap 7 is circumferentially spaced apart from the first facing surface 42 of the biasing member 25, and the biasing member side protrusion 44 of the biasing member 25 is moved away from the second opposing surface 42 of the biasing member 25. It is separated from the opposing surface 81. When the push-down head 5 continues to rotate, the cap side protrusion 80 slides on the first inclined surface 43 of the biasing member 25, and the biasing member side protrusion 44 slides on the second inclined surface 82 of the attached cap 7. , the lower end 41 of the biasing member 25 rises relative to the support portion 75 of the mounting cap 7, and the biasing member 25 is compressed. When the push-down head 5 is further rotated, the cap-side protrusion 80 and the biasing member-side protrusion 44 come into contact with each other. As a result, the push-down head 5 is placed in a standby position where it can be pushed down together with the stem 21 against the upward biasing force of the biasing member 25.

When the push-down head 5 is pushed down from the standby position, the pedestal portion 35 of the stem 21 separates downward from the piston 22, and a portion of the cylinder 23 located below the piston 22 communicates with the communication hole 34 of the stem 21. do. When the push-down head 5 is further pushed down from this state, the lower end opening edge of the mounting cylinder portion 53 comes into contact with the flange 39 of the piston 22, so that the piston 22 also moves downward together with the push-down head 5 and the like. As a result, the portion of the cylinder 23 located below the piston 22 is pressurized, and the liquid inside the cylinder 23 is transferred to the vertical gap between the pedestal portion 35 and the piston 22, the communication hole 34, and the stem 21. It passes through the mounting cylinder part 53 of the push-down head 5 and the nozzle cylinder part 54 in this order, and is discharged from the nozzle hole 54a. At this time, the valve body 32 of the lower valve body 24 is kept seated on the peripheral edge of the lower end opening on the inner surface of the cylinder 23 .

Thereafter, when the push-down of the push-down head 5 is released, the push-down head 5 is restored upward together with the stem 21 due to the upward biasing force of the biasing member 25. In this process, the pedestal portion 35 of the stem 21 contacts the piston 22 from below, thereby communicating the communication hole 34 of the stem 21 with the portion of the cylinder 23 located below the piston 22. is shut off, and then the piston 22 continues to move upward together with the push-down head 5 etc., the pressure is reduced in the portion of the cylinder 23 located below the piston 22, and the valve body 32 of the lower valve body 24 is connected. By separating the piece upwardly from the peripheral edge of the lower end opening on the inner surface of the cylinder 23 while elastically deforming the piece, the lower end opening of the cylinder 23 is opened, and the liquid inside the container body A passes through the suction tube 28 and flows into the cylinder. 23.
With the above, one discharge operation by the discharge device 1 is completed.

As explained above, according to the dispensing device 1 of this embodiment, the biasing member 25 is made of synthetic resin material, so when discarding the dispensing device 1, the biasing member 25 and It is possible to eliminate the need to separate the parts from other parts.
When the press-down head 5 is rotated from the state in which the press-down head 5 is located at the regulation position, the biasing member 25 that is provided in a non-rotatable manner with respect to the mounting cylinder portion 53 of the press-down head 5 also rotates, and the cap side protrusion 80 is rotated. It slides on the first inclined surface 43. As a result, the lower end of the biasing member 25 moves upward, so that the biasing member 25 is compressed. The same applies to the relationship between the biasing member side protrusion 44 and the second inclined surface 82 of the mounting cap 7. Therefore, the push-down head 5 rotates and moves from the restriction position to the standby position, and the push-down head 5 is urged upward by the biasing member 25 and becomes depressable, so that the pump 2 can be operated.
Here, the urging member 25 can be compressed by arranging the urging member 25 in its natural length and rotating the push-down head 5 when the ejector 1 is used. For this reason, since the biasing member 25 is made of a synthetic resin material, if a compressive force in the vertical direction is applied to the biasing member 25 for a long period of time, the biasing member 25 may become compressively deformed. By positioning the push-down head 5 in the regulation position and performing distribution, storage, etc. without applying vertical compressive force to the biasing member 25, the biasing member 25 may develop a habit of compressive deformation (plasticity) during this period. Therefore, it is possible to prevent the biasing member 25 from becoming difficult to elastically deform when the ejector 1 is used.
Furthermore, even when the user is using the device, it is possible to rotate the push-down head 5 and return it to the regulation position before starting use. For example, when storing the dispenser after use, the push-down head 5 can be returned to the regulation position. For example, the load applied to the biasing member 25 can be reduced, and a good biasing force by the biasing member 25 can be maintained over a long period of time.

Furthermore, the height of the push-down head 5 can be made the same in two states: a state in which the push-down head 5 is located at the regulation position, and a state in which the push-down head 5 is located in the standby position. Therefore, during the period of distribution, storage, etc., it is possible to suppress an increase in the total height of the ejector 1 and to reduce the space occupied by the ejector 1.

Further, when the push-down head 5 is located at the regulating position, the vertical rib 55 of the push-down cap 5 is in contact with the upper surface of the regulation convex portion 77 of the mounting cap 7, so that the push-down of the push-down head 5 is regulated. Therefore, there is no need to provide a separate member such as a stopper to restrict the pressing of the push-down head 5, and it is possible to reduce the number of parts to be discarded during use. The ejector 1 can be provided without the risk of losing separate parts.

Further, the support portion 75 of the mounting cap 7 has a second inclined surface 82 that abuts the first inclined surface 43 of the biasing member. As a result, the first inclined surface 43 and the second inclined surface 82 abut each other while facing each other in the circumferential direction, so that the mounting cap 7 and the attached Relative rotation of the lower end portion 41 of the biasing member 25 can be suppressed. Therefore, displacement of the lower end portion 41 of the biasing member 25 can be suppressed.

Note that the present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications can be made within the technical scope thereof.
For example, in the embodiment described above, the first inclined surface 43 on which the cap side protrusion 80 slides is provided on the lower surface 41a of the lower end portion 41 of the biasing member 25, and the upper surface 75a of the support portion 75 of the mounting cap 7 is provided with the first inclined surface 43 on which the cap side protrusion 80 slides. A second inclined surface 82 is provided on which the urging member side protrusion 44 of the urging member 25 slides. However, the configuration is not limited to this, and at least one of the lower surface 41a of the lower end portion 41 of the biasing member 25 and the upper surface 75a of the support portion 75 of the mounting cap 7 is formed with an inclined surface on which the other protrusion slides. It would be fine if it had been done.

Further, in the above embodiment, two cap-side protrusions 80 are provided, but three or more cap-side protrusions may be provided. The same applies to the biasing member side protrusion 44.

In addition, it is possible to appropriately replace the components in the above-described embodiments with well-known components without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1... Discharge device 2... Pump 5... Push-down head 7... Mounting cap 21... Stem 25... Biasing member 41... Lower end part 41a... Lower surface 43... First inclined surface (slanted surface, opposing inclined surface) 44... Urging member side Protrusion (protrusion) 53... Mounting cylinder part 54a... Nozzle hole 75... Support part 75a... Upper surface 80... Cap side protrusion (protrusion) 82... Second inclined surface (opposite inclined surface, inclined surface) A... Container body A1...Mouth

Claims (2)

a pump having a stem that is movably disposed downwardly in an upwardly biased state at the mouth of a container housing a liquid content;
a push-down head having a mounting cylinder mounted on the upper end of the stem and having a nozzle hole formed therein;
an attachment cap for attaching the pump to the mouth;
A discharge device that discharges the content liquid from the nozzle hole through the stem by pressing down the push-down head to move the stem downward and activating the pump when attached to the mouth part, ,
The pump is made of synthetic resin, which surrounds the mounting cylinder from the outside in the radial direction, and has a lower end that is non- rotatably engaged with the mounting cylinder, and urges the stem upward. Equipped with a biasing member made of
The mounting cap includes a support portion that supports the lower end portion of the biasing member from below,
Either one of the upper surface of the support portion and the lower surface of the lower end portion of the biasing member includes a protrusion that protrudes toward the other,
The other side includes an inclined surface that moves the lower end of the biasing member upward by sliding of the protrusion when the push-down head is rotated in the circumferential direction with respect to the mounting cap.
Dispenser. The one has an opposing inclined surface that is continuous with the protrusion in the circumferential direction and abuts the inclined surface,
The dispenser according to claim 1.

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