JP7296801B2 - ejector - Google Patents

Description

The present invention relates to dispensers.

2. Description of the Related Art Conventionally, there has been known a dispenser as disclosed in, for example, Patent Document 1 below. This dispenser has a stem and a nozzle member, and liquid is ejected from the ejection hole of the nozzle member by moving the stem downward. In this type of dispenser, a stopper for restricting the downward movement of the stem, a plug for closing the tip of the ejection hole, or the like may be separately provided in order to suppress unexpected ejection of the liquid.

JP 2019-64626 A

When a stopper or a plug is provided as a detachable separate member, it is necessary to store these members separately when these members are removed, which not only annoys the user, but also concerns that these members may be lost. was there. Further, for example, if these members are accidentally removed when carrying the dispenser, there is a risk of unintended ejection.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a dispenser that suppresses unexpected ejection of liquid and that has a stopper that can be released by a simple operation.

In order to solve the above problems, the present invention proposes the following means.
A dispenser according to an aspect of the present invention is a dispenser attached to the mouth of a container body containing a content liquid, comprising a base portion having a movement restricting portion and fixed to the container body; a pump that has a stem and a discharge head that are urged upward against a portion and moves the stem and the discharge head downward to discharge the content liquid from the discharge hole; a movable member attached to the discharge head; wherein the discharge head has a nozzle cylinder portion extending forward with respect to the stem and having the discharge hole provided at a front end thereof, and the movable member includes an exterior cylinder portion surrounding the nozzle cylinder portion, and the exterior cylinder a stopper portion positioned at a rear end portion of the movable member, and the stopper portion contacts the movement restricting portion from above to restrict downward movement of the ejection head and the stem with respect to the base portion. and a restriction releasing position located forward of the ejection restricting position and allowing downward movement of the ejection head and the stem with respect to the base portion. The portion protrudes forward from the front end of the nozzle cylinder portion at the restriction release position.

According to the above configuration, by operating the movable member back and forth, it is possible to easily switch between an ejection restricted state in which the downward movement of the ejection head and the stem is restricted and a restriction released state in which the restriction is released. .
According to the above configuration, there is no need to remove the movable member having the stopper portion from the ejection head when switching between the ejection regulating state and the restriction released state, so the possibility of losing the movable member can be eliminated.
According to the above configuration, the movable member has the outer tubular portion surrounding the nozzle tubular portion. The exterior cylinder protrudes forward from the front end of the nozzle cylinder at the restriction release position moved forward with respect to the nozzle cylinder. Therefore, by moving the outer tubular portion rearward from the restriction release position, the tip of the outer tubular portion can be retracted rearward. Therefore, when the regulation is released, the outer cylindrical portion protrudes farther forward than the nozzle cylindrical portion, and the nozzle can be extended to perform discharge, thereby enabling more accurate discharge to the target. In addition, in the ejection restricted state, the nozzle tip can be retracted rearward from the restriction released state, and it is possible to prevent the nozzle tip from becoming an obstacle during storage and transportation.

In the ejector according to the aspect described above, the stem or the ejection head has a support portion vertically opposed to the movement restricting portion with a gap therebetween, and the stopper portion is positioned at the ejection restricting position to prevent the movement of the movement restricting portion. It may be configured to be sandwiched between the portion and the support portion.

According to the above configuration, the support portion is arranged above the stopper portion in the discharge restricted state. In the ejection restricting state, when a force is applied to move the ejecting head or the stem downward, the stopper portion contacts the movement restricting portion and receives an upward force from the movement restricting portion. By arranging the support portion above the stopper portion, the support portion supports the stopper portion from above, thereby suppressing deformation and damage of the stopper portion. Further, since the support portion suppresses deformation of the stopper portion, downward movement of the ejection head and the stem can be restricted more reliably. As a result, even if a large force is applied to the ejection head and stem in the ejection restricted state, ejection from the ejection holes can be suppressed more reliably.

In the dispenser according to the above aspect, the movable member has a plug portion positioned inside the hollow portion of the outer tubular portion, and a connecting piece that connects the inner peripheral surface of the outer tubular portion and the plug portion. Further, the plug portion may block the discharge hole at the discharge restricting position.

According to the above configuration, the ejection hole can be closed by the plug portion by setting the movable member to the ejection restricting position. As a result, it is possible to suppress solidification of the content liquid remaining around the ejection hole, and it is possible to suppress ejection failure due to the solidified content liquid.

According to the dispenser according to the above aspect, it is possible to provide a dispenser having a stopper that can suppress unexpected ejection of liquid and can be released by a simple operation.

FIG. 1 is a cross-sectional view of a discharge device in a discharge restricted state according to an embodiment. FIG. 2 is a cross-sectional view of the dispenser in an unregulated state according to the embodiment. FIG. 3 is a cross-sectional view of a slide member of a modified example.

Hereinafter, a discharger 1 according to an embodiment of the present invention will be described with reference to the drawings.
1 and 2 are both cross-sectional views of the dispenser 1. FIG. 1 shows the dispenser 1 in a restricted discharge state in which the discharge of the contents is restricted, and FIG. 1 shows a dispenser 1 for performing

Dispenser 1 is attached to mouth 3 of container body 2 in which the content liquid is contained. The dispenser 1 includes a mounting cap (base portion) 11 mounted on the mouth portion 3 of the container body 2, a lever member 16 supported by the mounting cap 11, a stem 12, and a discharge head 13 provided with a discharge hole 13a. , a piston 41 , a cylinder 42 , and a piston guide 43 , and a slide member (movable member) 100 attached to a discharge head 13 of the pump 10 .

The stem 12, the piston 41, the cylinder 42, and the piston guide 43 are arranged with their central axes located on a common axis. Hereinafter, this common axis will be referred to as the central axis O, and the direction along the central axis O will be referred to as the vertical direction. In a plan view viewed from above and below, the direction intersecting the central axis O is called the radial direction, and the direction rotating around the central axis O is called the circumferential direction. Further, the direction in which the discharge holes 13a are provided is called the front side, and the opposite side is called the rear side. A direction perpendicular to both the up-down direction and the front-rear direction is referred to as the left-right direction.

The mounting cap 11 includes an annular top wall portion 11a, a cylindrical mouth portion mounting portion 11b extending downward from the outer peripheral edge of the top wall portion 11a, and an upwardly extending portion extending from the inner peripheral edge of the top wall portion 11a. It has an upper tubular portion (movement restricting portion) 11c and a lever support portion 77 extending rearward from the outer peripheral surface of the upper tubular portion 11c. The top wall portion 11a, the mouth attachment portion 11b, and the upper cylindrical portion 11c extend axially with the central axis O as the center. A female thread is formed on the inner peripheral surface of the mouth attachment portion 11 b to be screwed into a male thread formed on the outer peripheral surface of the mouth portion 3 of the container body 2 . The mounting cap 11 is fixed to the container body 2 by screwing the female thread of the mouth section mounting portion 11 b into the male thread of the mouth section 3 . The upper tubular portion 11c surrounds the stem 12 and the coil spring 95 from the radial outside.

The lever support portion 77 gradually extends upward toward the rear. A columnar shaft 77A projects outward in the left-right direction from the upper end of the lever support portion 77 . An imaginary axis passing through the center of the shaft 77A and extending in the horizontal direction serves as the rotation axis L of the lever member 16. As shown in FIG. As a result, the rotation axis L is arranged behind the stem 12 and extends in the left-right direction.

The lever member 16 is attached to the lever support portion 77 via the shaft 77A. Thereby, the lever member 16 is coupled to the lever support portion 77 so as to be swingable about the rotation axis L. As shown in FIG.

The lever member 16 straddles the upper part of the mounting cylinder part 31 of the discharge head 13 in the front-rear direction, and the nozzle cylinder part 32 and the slide member 100 described later pass through in the front-rear direction. and a pair of side plate portions 92 projecting downward from side edges on both left and right sides of the top plate portion 90 and facing each other in the left-right direction.
The ejection head 13 is arranged in an internal space surrounded by the top plate portion 90 and the pair of side plate portions 92 . Therefore, the pair of side plate portions 92 are arranged so as to sandwich the ejection head 13 in the left-right direction.

The top plate portion 90 has a smoothly curved shape that expands upward. The front plate portion 91 gradually extends downward from the front edge of the top plate portion 90 toward the front. A lower portion of the front plate portion 91 is used as a finger hook portion for hooking a fingertip. The pair of side plate portions 92 sandwich the upper portion of the lever support portion 77 in the left-right direction. A rear end portion of each side plate portion 92 is formed with a shaft hole portion 92A through which the shaft body 77A is inserted. As a result, the lever member 16 is supported by the lever support portion 77 so as to be swingable around the shaft 77A (around the rotation axis L).

A through hole 93 is formed in the front portion of the lever member 16 . The through hole 93 is formed in a boundary portion between the front end portion of the top plate portion 90 and the upper end portion of the front plate portion 91 and a portion reaching the upper end portion of the side plate portion 92 . That is, the through-hole 93 is opened obliquely forward and on both sides in the left-right direction. However, the through hole 93 may be opened at least forward. The nozzle cylinder portion 32 of the ejection head 13 and the slide member 100 are inserted through the through hole 93 .

An engagement groove 99 that engages with the shaft portion 10A of the ejection head 13 is formed in the lever member 16 . The engagement groove 99 is formed in a semicircular shape opening downward at the lower end of the plate portion projecting inward in the left-right direction from the pair of side plate portions 92 of the lever member 16 . A shaft portion 10</b>A projecting in the left-right direction from the ejection head 13 is inserted into the engaging groove 99 . As a result, by swinging the lever member 16 downward about the rotation axis L, the inner peripheral surface of the engagement groove 99 pushes the outer peripheral surface of the shaft portion 10A downward, and the discharge head 13 and the stem 12 are Move down.

The pump 10 discharges the content liquid from the discharge hole 13a by moving the stem 12 and the discharge head 13 downward. The pump 10 includes a stem 12 biased upward against a mounting cap 11, a discharge head 13 mounted on the stem 12, a cylindrical piston 41, and a cylinder 42 in which the piston 41 is slidably accommodated. and a piston guide 43 extending downward from the stem 12 and vertically penetrating the inside of the piston 41 .

The stem 12 has a cylindrical shape and is arranged coaxially with the central axis O. As shown in FIG. The upper end of the stem 12 is positioned above the upper end opening of the cylinder 42 . A discharge head 13 is attached to the upper end of the stem 12 . The lower end of the stem 12 is positioned below the upper end opening of the cylinder 42 . The lower end of the stem 12 is formed with an enlarged diameter portion 12A having a larger diameter than other portions.

The ejection head 13 includes a mounting cylinder portion 31 mounted on the upper end of the stem 12 , a nozzle cylinder portion 32 protruding forward from the mounting cylinder portion 31 , and a support located below the rear end portion of the nozzle cylinder portion 32 . and a portion 13b. The mounting cylinder portion 31, the nozzle cylinder portion 32, and the support portion 13b are integrally formed of, for example, a resin material.

The mounting tubular portion 31 is formed in a capped tubular shape. A shaft portion 10A that protrudes in the left-right direction is formed at the upper end portion of the mounting cylinder portion 31 . The shaft portion 10A has a circular shape when viewed from the left-right direction. The engaging groove 99 of the lever member 16 is engaged with the shaft portion 10A. A flange portion 31 a is provided on the outer peripheral surface of the mounting cylinder portion 31 . The mounting tubular portion 31 is fitted to the stem 12 in a region below the flange portion 31a. The flange portion 31 a protrudes radially outward from the outer peripheral surface of the mounting cylinder portion 31 . The flange portion 31a is arranged in the middle of the mounting tube portion 31 in the longitudinal direction. The lower surface of the flange portion 31 a contacts the upper end surface of the stem 12 .

The nozzle tube portion 32 protrudes forward from the mounting tube portion 31 . That is, the nozzle cylinder portion 32 extends forward with respect to the stem 12 . A hollow portion of the nozzle cylinder portion 32 communicates with a hollow portion of the mounting cylinder portion 31 . A discharge hole 13a is provided at the front end of the nozzle cylinder portion 32 as an opening of the hollow portion.

The lower surface of the support portion 13b faces the upper end surface of the upper cylindrical portion 11c provided on the mounting cap 11 in the vertical direction. As will be described later, a stopper portion 104 of the slide member 100 is arranged between the support portion 13b and the upper cylindrical portion 11c in the discharge restricted state shown in FIG.

The cylinder 42 has a cylindrical shape and is arranged coaxially with the central axis O. As shown in FIG. A mounting cylinder 42a extending downward is provided at the lower end of the cylinder 42 . The upper end of the suction pipe 9 is fitted to the mounting cylinder 42a. The suction pipe 9 sucks up the content liquid inside the container body 2 . A lower end opening of the suction pipe 9 is positioned near the bottom of the container body 2 . Therefore, the suction tube 9 can suck up the content liquid accumulated at the bottom when the content liquid remaining in the container main body 2 is small. The insides of the cylinder 42 and the mounting tube 42a communicate with each other. The cylinder 42 and the mounting cylinder 42a are arranged coaxially with the central axis O. As shown in FIG.

The cylinder 42 has a valve seat cylinder 42c that protrudes upward from the periphery of the upper end opening of the mounting cylinder 42a. The valve seat cylinder 42c is arranged coaxially with the central axis O. As shown in FIG. A lower valve body 44 is accommodated inside the cylinder 42 and above the valve seat cylinder 42c.

A flange portion 42 b that protrudes radially outward is formed at the upper end portion of the cylinder 42 . The flange portion 42b is arranged at the upper opening edge of the mouth portion 3 of the container body 2 with a packing 66 interposed therebetween. The upper surface of the flange portion 42 b contacts the lower surface of the top wall portion 11 a of the mounting cap 11 .

A through hole 42 h is formed in the cylinder 42 so as to extend therethrough in the radial direction. As shown in FIG. 1, the through hole 42h is formed in the wall surface of the cylinder 42 that faces the piston 41 in the radial direction when the lever member 16 is opened. 42 h of through-holes function as an air hole which connects the inside of the cylinder 42 with the exterior.

The coil spring 95 has the stem 12 inserted therein and supports the stem 12 in an upwardly urging state so as to be able to move downward. A lower end portion of the coil spring 95 is supported by a lower support portion 95A provided on the flange portion 42b of the cylinder 42. As shown in FIG. The upper end portion of the coil spring 95 is supported by an upper support portion 95B arranged at the upper end portion of the stem 12 . The coil spring 95 is arranged in a state of being vertically compressed and deformed by the upper support portion 95B and the lower support portion 95A.

The piston 41 is fitted in the cylinder 42 so as to be vertically movable. The piston 41 is arranged so as to be vertically movable within the cylinder 42 in conjunction with the vertical movement of the stem 12 .

At least the lower end of the piston 41 is located below the stem 12 . A portion of the piston 41 that vertically faces the lower opening edge of the stem 12 is located below the lower opening edge of the stem 12 .

The piston 41 includes an outer piston 51 fitted in the cylinder 42 so as to be vertically slidable, and an inner piston disposed radially inside the outer piston 51 and surrounding the piston guide 43 from the radially outer side. 52 and an annular connecting portion 53 that connects the outer cylinder piston 51 and the inner cylinder piston 52 . The outer cylinder piston 51, the inner cylinder piston 52, and the annular connecting portion 53 are arranged coaxially with the central axis O, respectively.

As shown in FIG. 1, a gap A is provided between the lower end of the stem 12 and the annular connecting portion 53 of the piston 41 when the lever member 16 is opened. Further, as shown in FIG. 2, when the lever member 16 is pulled backward, the lower end of the stem 12 comes into contact with the annular connecting portion 53 and the gap A disappears.

The piston guide 43 is formed in a cylindrical shape with a bottom and arranged coaxially with the central axis O. As shown in FIG. The upper portion of the piston guide 43 is fitted to a portion of the stem 12 located above the enlarged diameter portion 12A. Thereby, the piston guide 43 moves up and down integrally with the stem 12 .

A lower portion of the piston guide 43 is inserted into the piston 41 . A communication hole 43a is formed in the lower portion of the piston guide 43 so as to extend therethrough in the radial direction. At the lower end of the piston guide 43, a pedestal portion 43b protruding radially outward and a plurality of guide portions 43c further protruding radially outward from the pedestal portion 43b are formed. The guide portion 43 c contacts the inner peripheral surface of the cylinder 42 to guide the vertical movement of the stem 12 . The plurality of guide portions 43c are discretely arranged at regular intervals along the circumferential direction. A gap is provided between the guide portions 43c arranged in the circumferential direction. Inside the piston 41, the upper area and the lower area of the guide portion 43c communicate with each other.

The pedestal portion 43b is formed in a portion of the piston guide 43 located below the communication hole 43a. The pedestal portion 43b supports the piston 41 from below. As a result, the communication between the portion of the cylinder 42 located below the piston 41 and the communication hole 43a is blocked. When the piston guide 43 moves downward with respect to the piston 41 and the pedestal portion 43b separates downward from the piston 41, the portion located below the piston 41 in the cylinder 42 communicates with the communication hole 43a. do.

The lower valve body 44 includes a fitting tube 44a and a valve body 44b.
The fitting cylinder 44 a is fitted inside the lower end portion of the cylinder 42 . The valve main body 44b is formed in a plate shape and arranged at the upper end opening edge of the valve seat cylinder 42c. The valve body 44b is connected to the inner peripheral surface of the fitting cylinder 44a via an elastically deformable connecting piece. The valve main body 44b is arranged so as to be elastically displaceable in the vertical direction with respect to the valve seat tube 42c according to the elastic deformation of the connecting piece.

As described above, the lower valve body 44 functions as a check valve that keeps the lower end opening of the cylinder 42 closed when the inside of the cylinder 42 is pressurized, and opens the lower end opening of the cylinder 42 when the inside of the cylinder 42 is decompressed. . That is, the lower valve body 44 prevents the contents in the cylinder 42 from returning to the container body 2 through the lower end opening of the cylinder 42 when the cylinder 42 is pressurized, and when the cylinder 42 is depressurized, the container body 2 is prevented from returning to the container body 2 . The contents inside flow into the cylinder 42 through the lower end opening of the cylinder 42 .

Next, the action of the pump 10 described above will be described.
When the user moves the front plate portion 91 of the lever member 16 rearward, a downward force is applied to the shaft portion 10A of the ejection head 13 . As a result, the ejection head 13 moves downward against the upward biasing force of the coil spring 95 . The stem 12 and the piston guide 43 also move downward together with the discharge head 13 , and the pedestal portion 43 b of the piston guide 43 moves downward away from the piston 41 . Accordingly, in the cylinder 42, the area located below the piston 41 and the communication hole 43a communicate with each other. When the ejection head 13 is further moved downward from this state, the gap A disappears and the lower end of the stem 12 and the annular connecting portion 53 of the piston 41 come into contact with each other, and the piston 41 moves downward together with the stem 12 . As a result, the portion of the cylinder 42 located below the piston 41 is pressurized, and the contents in the cylinder 42 move into the vertical gap between the pedestal portion 43b and the piston 41, the communication hole 43a, and the piston guide. 43, the stem 12, the mounting cylinder 31 of the ejection head 13, and the nozzle cylinder 32 in this order, and are ejected from the ejection hole 13a. At this time, the valve main body 44b of the lower valve body 44 is kept seated on the valve seat tube 42c of the cylinder 42 .

After that, when the operation of the lever member 16 is released, the upward biasing force of the coil spring 95 causes the discharge head 13 to restore and move upward together with the stem 12 and the piston guide 43 . In this process, the pedestal portion 43b of the piston guide 43 comes into contact with the piston 41 from below, thereby blocking the communication between the portion of the cylinder 42 located below the piston 41 and the communication hole 43a. Also, in this process, the volume of the flow path from the piston 41 to the discharge hole 13a increases, and the inside of this flow path becomes negative pressure, thereby obtaining a suck-back effect. sucked inward. After that, when the piston guide 43 continues to move upward together with the piston 41 and the stem 12, the pressure in the portion located below the piston 41 in the cylinder 42 is reduced, and the valve body 44b of the lower valve body 44 moves to the connecting piece. is elastically deformed and separated upward from the valve seat cylinder 42 c of the cylinder 42 , the lower end opening of the cylinder 42 is opened, and the contents in the container main body 2 flow into the cylinder 42 .

Next, the slide member 100 will be described with reference to FIGS. 1 and 2. FIG.
The slide member 100 is mounted so as to be slidable in the front-rear direction with respect to the nozzle tube portion 32 described above.

The slide member 100 includes a tubular outer tubular portion 101 extending in the front-rear direction, and a stopper portion 104 positioned at the rear end portion of the outer tubular portion 101 . The outer tubular portion 101 and the stopper portion 104 are integrally formed of, for example, a resin material.

The exterior tubular portion 101 has a main tubular portion 101a and a sub tubular portion 101b positioned at the front end of the main tubular portion 101a. The main cylinder portion 101a and the sub cylinder portion 101b are arranged along the front-rear direction and connected to each other.

The axes of the main tubular portion 101a and the sub tubular portion 101b both extend in the front-rear direction. The axis of the main cylinder portion 101 a is arranged coaxially with the axis of the nozzle cylinder portion 32 . On the other hand, the axis of the sub cylinder portion 101 b is slightly inclined with respect to the axis of the nozzle cylinder portion 32 . That is, the exterior tubular portion 101 has a slightly bent shape at the boundary between the main tubular portion 101a and the sub tubular portion 101b. In this embodiment, the axis of the main tubular portion 101a is inclined slightly upward toward the front, and the axis of the sub tubular portion 101b is inclined slightly downward toward the front.

Both the main cylindrical portion 101a and the sub cylindrical portion 101b have a circular outer shape and substantially the same diameter. The hollow portion of the main tubular portion 101a and the hollow portion of the sub tubular portion 101b are both circular in shape, and the inner diameter of the sub tubular portion 101b is larger than that of the main tubular portion 101a. The hollow portion of the main tubular portion 101a and the hollow portion of the sub tubular portion 101b communicate with each other.
In addition, in this embodiment, both the inner surface shape and the outer surface shape of the exterior cylinder part 101 and the nozzle cylinder part 32 are circular. However, these shapes can adopt other shapes such as an elliptical shape and a polygonal shape.

The diameter of the hollow portion of the main cylinder portion 101 a is slightly larger than the outer diameter of the nozzle cylinder portion 32 . A nozzle tube portion 32 is inserted into the hollow portion of the main tube portion 101a. That is, the outer tubular portion 101 surrounds the nozzle tubular portion 32 from the outside in the radial direction of the axis in the main tubular portion 101a. Thereby, the exterior cylinder part 101 is configured to be slidable in the front-rear direction with respect to the nozzle cylinder part 32 .

The sub cylinder portion 101b is positioned forward of the front end of the nozzle cylinder portion 32 when the nozzle cylinder portion 32 is inserted into the main cylinder portion 101a. The diameter of the hollow portion of the sub cylinder portion 101 b is smaller than the outer diameter of the nozzle cylinder portion 32 .

A hollow portion of the sub cylinder portion 101 b communicates with a hollow portion of the nozzle cylinder portion 32 . Therefore, the content liquid discharged from the discharge hole 13a provided at the front end of the nozzle cylinder portion 32 passes through the hollow portion of the main cylinder portion 101a, the hollow portion of the sub cylinder portion 101b, and is discharged from the front end of the exterior cylinder portion 101. be.

The stopper portion 104 extends downward from the rear end opening edge of the exterior tubular portion 101 . Specifically, the stopper portion 104 is arranged coaxially with the central axis O in a plan view, and is formed in an arc shape that opens rearward.

In the discharge restricted state shown in FIG. 1, the surface of the stopper portion 104 facing radially inward contacts the outer peripheral surface of the flange portion 31a. In addition, the stopper portion 104 is interposed between the upper cylindrical portion 11c of the mounting cap 11 and the support portion 13b of the ejection head 13 in the ejection restricted state. The upper end surface of the stopper portion 104 approaches or abuts on the support portion 13b from below. On the other hand, the lower end surface of the stopper portion 104 approaches or abuts the upper end opening edge of the upper tubular portion 11c from above the upper tubular portion 11c. In the ejection restricting state, the stopper portion 104 is interposed between the support portion 13b and the upper cylindrical portion 11c to restrict the downward movement of the ejection head 13 (and the stem 12).

The slide member 100 is movable between a discharge regulation position shown in FIG. 1 and a regulation release position shown in FIG. The ejection restricting position is a position where the stopper portion 104 abuts the upper cylindrical portion 11c from above to restrict the downward movement of the ejection head 13 and the stem 12 with respect to the mounting cap 11 . The regulation release position is a position forward of the discharge regulation position. The restriction release position is a position where the ejection head 13 and the stem 12 are permitted to move downward with respect to the mounting cap 11 when the stopper portion 104 is disengaged from the gap between the upper cylindrical portion 11c and the support portion 13b. . The exterior tubular portion 101 protrudes forward from the front end of the nozzle tubular portion 32 at the restriction release position.

2, a space S is formed in front of the tip of the nozzle tube portion 32 in the hollow portion of the main tube portion 101a. The volume of space S is preferably smaller than the suction volume obtained by the suckback effect of pump 10 . As a result, the space S disappears by moving the slide member 100 from the restriction release position to the ejection restriction state. By making the suction volume obtained by the suck-back effect larger than the space S, it is possible to suppress the content liquid from overflowing from the front end of the exterior tubular portion 101 when the slide member 100 is moved to the ejection restricting state. Further, it is more preferable that the suction volume obtained by the suck-back effect is larger than the total volume of the space S and the hollow portion of the secondary cylindrical portion 101b. As a result, the amount of the content that accumulates in front of the ejection hole 13a after the ejection operation can be further reduced, and the overflow of the content from the front end of the external tubular portion 101 can be suppressed more reliably. In addition, since it is possible to prevent the content liquid from accumulating inside the distal end of the outer tubular portion 101, it is possible to suppress adhesion of dust or the like to the collected content liquid. Furthermore, even if the posture of the nozzle tube portion 32 is downward when carrying after the discharge operation, dripping from the tip of the outer tube portion 101 can be suppressed.

According to this embodiment, the slide member 100 can move between the ejection restriction position and the restriction release position. Therefore, by operating the slide member 100 back and forth, it is possible to easily switch between an ejection restricted state in which downward movement of the ejection head 13 and the stem 12 is restricted and a restricted release state in which the restriction is released.

Further, according to this embodiment, it is not necessary to remove the slide member 100 having the stopper portion 104 from the ejection head 13 when switching between the ejection restricted state and the restricted state. Therefore, the fear of losing the slide member 100 can be eliminated.

According to the present embodiment, the slide member 100 has the outer tubular portion 101 surrounding the nozzle tubular portion 32 of the ejection head 13 . The exterior tubular portion 101 is positioned forward of the front end of the nozzle tubular portion 32 at the restriction release position. Therefore, by moving the exterior tubular portion 101 rearward from the restriction release position, the tip of the exterior tubular portion 101 can be retracted rearward. Therefore, according to the present embodiment, when the regulation is released, the exterior cylinder portion 101 can be projected farther forward than the nozzle cylinder portion 32, and the nozzle can be ejected in a state where the nozzle is extended. can be discharged. Further, in the dispenser 1 of the present embodiment, the user performs a discharge operation by holding the front plate portion 91 arranged directly below the nozzle tube portion 32 and moving it rearward. During the ejection operation, the slide member 200 is pulled forward and arranged at the regulation release position. As a result, the distal end of the external tubular portion 101 that discharges the content liquid is arranged forward of the front plate portion 91 . Therefore, even if droplets fall from the tip of the outer tubular portion 101, the droplets are less likely to reach the user's hand. On the other hand, in the ejection restricted state, the nozzle tip can be retracted rearward from the restriction released state, and it is possible to prevent the nozzle tip from becoming an obstacle during storage and transportation.

In the present embodiment, the external tubular portion 101 and the stopper portion 104 are integrally molded. According to this configuration, the exterior tubular portion 101 and the stopper portion 104 can be moved integrally. As a result, the nozzle can be extended in accordance with the movement of the stopper portion 104 from the ejection restriction position to the restriction release position. That is, the lock operation by the stopper portion 104 and the extension operation of the nozzle can be performed in a series of operations, and operability can be improved.

According to this embodiment, the ejection head 13 has the support portion 13b facing the upper cylindrical portion 11c with a gap therebetween in the vertical direction. The stopper portion 104 is sandwiched between the upper cylindrical portion 11c and the support portion 13b at the discharge restricting position. In the ejection restricted state shown in FIG. 1, when a force is applied to the ejection head 13 or the stem 12 to move it downward, the stopper portion 104 abuts against the upper tubular portion 11c and moves upward from the upper tubular portion 11c. receive a force toward By arranging the support portion 13b on the upper side of the stopper portion 104, the support portion 13b supports the stopper portion 104 from the upper side, and deformation and damage of the stopper portion 104 can be suppressed. In addition, since the support portion 13b suppresses the deformation of the stopper portion 104, the downward movement of the ejection head 13 and the stem 12 can be restricted more reliably. As a result, even if a large force is applied to the ejection head 13 and the stem 12 in the ejection restricted state, ejection from the ejection holes 13a can be reliably restricted.

(Modification 1)
FIG. 3 is a cross-sectional view of a modified slide member 200 that can be employed in the above-described embodiments. In FIG. 3, the slide member 200 is arranged at the regulation releasing position. In addition, the same code|symbol is attached|subjected about the component of the same aspect as the above-mentioned embodiment, and the description is abbreviate|omitted.
The slide member 200 is mounted so as to be slidable in the front-rear direction with respect to the nozzle tube portion 32 described above.

The sliding member 200 includes a tubular outer tubular portion 101 extending in the front-rear direction, a plug portion 210 and a plurality of connecting pieces 211 positioned inside the outer tubular portion 101 , and a rear end portion of the outer tubular portion 101 . and a stopper portion 104 (not shown in FIG. 3). The exterior tubular portion 101 has a main tubular portion 101a and a sub tubular portion 101b positioned at the front end of the main tubular portion 101a. The outer tubular portion 101, the plug portion 210, the connecting piece 211, and the stopper portion 104 are integrally formed of, for example, a resin material.

A first projecting portion 101c that protrudes inward is provided on the inner surface of the exterior tubular portion 101 . The first projecting portion 101 c extends annularly around the axis of the outer tubular portion 101 . On the other hand, the outer peripheral surface of the nozzle tube portion 32 is provided with a second projecting portion 13c that protrudes outward. The second projecting portion 13 c extends annularly around the axis of the nozzle cylinder portion 32 . With the slide member 200 at the release position, the second protrusion 13c contacts the first protrusion 101c from the front. The forward movement of the slide member 200 with respect to the nozzle tube portion 32 is restricted by the contact between the first projection portion 101c and the second projection portion 13c. Thereby, it is possible to prevent the slide member 200 from being detached from the nozzle tube portion 32 . The configuration of the first projecting portion 101c and the second projecting portion 13c is employed not only in this modified example but also in the above-described embodiment.

The plug portion 210 is positioned inside the hollow portion of the outer cylindrical portion 101 . Plug portion 210 has a columnar shape. The axis of the plug portion 210 coincides with the axis of the main cylindrical portion 101a. The front end of the plug portion 210 is positioned at the boundary between the main tubular portion 101a and the sub tubular portion 101b. The plug portion 210 is provided with a tapered surface on the edge on the rear side.

The connecting piece 211 connects the inner peripheral surface of the outer cylindrical portion 101 and the plug portion 210 . In this modified example, the plurality of connecting pieces 211 extend along the radial direction of the axis of the plug portion 210 . The plurality of connecting pieces 211 are arranged at regular intervals along the circumferential direction of the axis of the plug portion 210 . Between the plug portions 210 arranged in the circumferential direction, a gap is provided for communicating the hollow portion of the main tubular portion 101a and the hollow portion of the sub tubular portion 101b.

In the regulation released state shown in FIG. 3, the plug portion 210 faces the ejection hole 13a of the ejection head 13 in the front-rear direction. In the deregulation state, the content liquid discharged from the discharge hole 13a is discharged from the front end of the exterior cylindrical portion 101 through the hollow portion of the main cylindrical portion 101a and the hollow portion of the sub cylindrical portion 101b.

By moving the slide member 200 from the regulation release position to the discharge regulation position, the plug portion 210 is inserted into the discharge hole 13a. As a result, the discharge hole 13 a is blocked by the plug portion 210 . By providing the tapered surface on the rear edge of the plug portion 210, the plug portion 210 can be smoothly inserted into the discharge hole 13a as it moves to the discharge restricting position.

According to this modification, the plug portion 210 can block the discharge hole 13a by setting the slide member 200 to the discharge restricting position. As a result, it is possible to suppress solidification of the content liquid remaining around the ejection hole 13a, and it is possible to suppress occurrence of ejection failure due to the solidified content liquid. Further, according to this modified example, in addition to the lock operation and the nozzle extension operation, the discharge hole 13a can be closed in a series of operations, and the operability can be improved.

As described above, the embodiments and their modifications of the present invention have been described in detail with reference to the drawings. Design changes are also included.

In the above-described embodiment, the case where the support portion 13b is provided on the ejection head 13 was exemplified, but the support portion 13b may be provided on the stem 12 as well. That is, it is sufficient that the stem 12 or the ejection head 13 has the support portion 13b.

In the above-described embodiment, the case where the upper cylindrical portion 11c of the mounting cap 11 abuts against the stopper portion 104 and functions as a movement restricting portion that restricts the downward movement of the ejection head 13 and the stem 12 has been described. However, the movement regulating portion may be provided at any position and may have any shape as long as the downward movement of the ejection head 13 and the stem 12 is restricted in the ejection restricted state.

In the above-described embodiment, the configuration in which the stopper portion 104 is fitted to the stem 12 at the discharge restricting position has been described, but the present invention is not limited to this configuration. It is sufficient that the stopper portion 104 is interposed between the nozzle tube portion 32 and the restricting portion at the ejection restricting position.

In addition, it is possible to appropriately replace the constituent elements in the above-described embodiment with well-known constituent elements without departing from the scope of the present invention, and the modifications described above may be combined as appropriate.

DESCRIPTION OF SYMBOLS 1... Dispenser 2... Container main body 3... Mouth part 10... Pump 11... Mounting cap (base part) 11c... Upper cylinder part (movement control part) 12... Stem 13... Discharge head 13a... Discharge hole 13b support portion 32 nozzle cylinder portion 100 slide member (movable member) 101 exterior cylinder portion 104 stopper portion 210 plug portion 211 connection piece A gap

Claims (3)

A dispenser attached to the mouth of a container body containing a content liquid,
a base portion having a movement restricting portion and fixed to the container body;
a pump having a stem and a discharge head that are urged upward with respect to the base portion, and for discharging the content liquid from the discharge hole by moving the stem and the discharge head downward;
a movable member attached to the ejection head,
the ejection head has a nozzle tube portion extending forward with respect to the stem and having the ejection hole at a front end thereof;
The movable member is
an exterior tubular portion surrounding the nozzle tubular portion;
a stopper portion positioned at the rear end portion of the outer tubular portion;
The movable member is
an ejection restricting position where the stopper portion contacts the movement restricting portion from above to restrict downward movement of the ejection head and the stem with respect to the base portion;
a restriction releasing position which is a position forward of the ejection restricting position and permits downward movement of the ejection head and the stem with respect to the base portion;
The exterior cylinder protrudes forward from the front end of the nozzle cylinder at the restriction release position.
Ejector. the stem or the ejection head has a support portion vertically facing the movement restricting portion with a gap therebetween;
The stopper portion is sandwiched between the movement restricting portion and the support portion at the ejection restricting position.
Dispenser according to claim 1. The movable member is
a plug portion positioned inside the hollow portion of the exterior tubular portion;
a connecting piece that connects the inner peripheral surface of the outer cylindrical portion and the plug portion,
the plug closes the discharge hole at the discharge restricting position;
Dispenser according to claim 1 or 2.

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