JP2023051671A - Discharge tool for thin-wall container - Google Patents

Abstract

To provide a discharge tool for a thin-wall container, facilitating replacing a discharge tool and re-filing a content while reducing a resin amount and reducing an environmental load by using a thin-wall container.SOLUTION: A discharge tool 100 for a thin-wall container is a discharge tool 100 for a thin-wall container, which includes: a pump part 30 that has a stem 37 energized upward, and pressure-feeds upward a content stored in a container body 10 as a thin-wall container due to the downward movement of the stem 37; and a nozzle head 40 that is fitted to an upper end portion of the stem 37, and operates the pump part 30 by depression to discharge the content from a nozzle 43. The pump part 30 has a suction pipe 35 suspended so as to contact a bottom 1 of the container body 10 and sucking a content. The suction pipe 35 has an enlarged diameter portion 35d enlarging a diameter to a radial direction outside due to contact of the lower end portion with the bottom 1 of the container body 10. The discharge tool 100 for a thin-wall container further includes a holding part for holding an external diameter of the enlarged diameter portion 35d to equal to or lower than an inner diameter of a mouth part 3 of the container body 10.SELECTED DRAWING: Figure 4A

Description

TECHNICAL FIELD The present disclosure relates to a thin-walled container dispensing tool for dispensing contents contained in a thin-walled container.

As a synthetic resin container capable of containing contents such as cosmetics, cleansers, and beverages, for example, as shown in Patent Document 1, the thickness of the body and bottom is reduced for the purpose of considering environmental issues and reducing costs. also discloses that a self-supporting posture can be ensured by forming self-supporting legs.

By the way, even in the synthetic resin container of Patent Document 1, if the attached nozzle head is strongly pressed, there is a possibility that the thin-walled body part and the like may buckle. is placed close to the bottom of the container so that the lower end of the suction pipe receives the pressing load, or the suction pipe is radially spread downward and the body is reinforced by pushing the suction pipe outward. and suppressed the buckling of the container body.

JP-A-2011-73756

However, if the suction pipe is radially expanded downward in the radial direction, when the suction pipe that is radially expanded is pulled out of the container and the content is refilled, the suction pipe may be caught by the mouth of the container and detached. Therefore, there is still room for improvement in this respect.

The present disclosure is intended to solve such problems, and the purpose is to reduce the amount of resin by using a thin-walled container to reduce the environmental load, while changing the discharge tool and the contents. To propose a discharge tool for a thin-walled container which facilitates refilling of a container.

The dispensing tool for thin-walled containers of the present disclosure includes:
a pump unit that has a stem that is biased upward, and pumps upward the contents contained in the container body, which is a thin-walled container, by downward movement of the stem;
A discharge tool for a thin-walled container, comprising: a nozzle head mounted on the upper end of the stem and configured to operate the pump section by pressing down to discharge the contents from the nozzle,
The pump part has a suction pipe that hangs down so as to be able to contact the bottom of the container body and sucks the contents,
The suction pipe has an enlarged diameter portion that expands radially outward when the lower end of the suction pipe comes into contact with the bottom portion of the container body,
The thin-walled container discharge tool is characterized by comprising a holding part that holds the outer diameter of the expanded diameter part to be equal to or less than the inner diameter of the mouth part of the container body.

Further, in the thin-walled container discharge tool of the present disclosure, in the configuration described above, the suction pipe is formed of a tubular member and a body separate from the tubular member, and is attached to a lower portion of the tubular member to be the expanded diameter pipe. and a diameter-enlarging member having a portion, wherein the diameter-enlarging portion is preferably formed above a suction opening provided in a lower portion of the suction pipe.

In the discharge tool for thin-walled containers of the present disclosure, in the configuration described above, the diameter-enlarging member extends downward from the lower portion of the cylindrical member on the radially inner side of the diameter-enlarging portion, and the suction opening is provided at the lower end portion. It is preferable to have an extension cylinder part in which is formed.

Further, in the discharge tool for thin-walled containers of the present disclosure, in the configuration described above, an abutting tubular portion capable of coming into contact with a bottom portion of the container body is formed at a lower portion of the diameter-enlarging member. The side wall of the container is preferably provided with a notch for allowing the contents to pass in the radial direction.

Further, in the thin-walled container discharge tool of the present disclosure, in the configuration described above, it is preferable that the enlarged diameter portion is formed integrally with the tubular portion so as to extend from the lower end portion of the tubular portion.

Further, in the thin-walled container dispensing tool of the present disclosure, in the configuration described above, the enlarged diameter portion has a hinge portion extending in the circumferential direction, and the hinge portion is bent so as to protrude radially outward to expand the diameter. preferably.

Further, in the thin-walled container dispensing tool of the present disclosure, in the configuration described above, it is preferable that the holding portion engages with the container body when the thin-walled container dispensing tool is attached to the container body.

Further, in the discharge tool for thin-walled containers of the present disclosure, in the configuration described above, the holding portion may have a pair of engaging portions for holding the outer diameter of the enlarged diameter portion equal to or less than the inner diameter of the mouth portion of the container body. preferable.

According to the present disclosure, it is possible to propose a discharge tool for a thin-walled container that facilitates replacement of the discharge tool and refilling of contents while reducing the amount of resin by using a thin-walled container to reduce the environmental load.

1 is a front view of a mounting cap, a pump section, and a nozzle head that constitute the thin-walled container discharger according to the first embodiment of the present disclosure; FIG. 2 is an enlarged bottom view of a suction pipe that constitutes the pump section in FIG. 1. FIG. FIG. 2B is a cross-sectional view taken along line AA in FIG. 2A; 1 is a front view of a retaining ring that constitutes a thin-walled container discharger according to a first embodiment of the present disclosure; FIG. Fig. 2 is a front partial cross-sectional view showing a state where the discharge tool for thin-walled containers according to the first embodiment of the present disclosure is attached to the mouth portion of the container body; FIG. 4B is a detailed view of a C portion in FIG. 4A; 4B is a diagram showing a state in which the mounting cap is removed from the container body in the state of FIG. 4A, and the suction pipe is moved upward to return from the expanded diameter portion to the original state. FIG. FIG. 6 is a front cross-sectional view showing a state in which the diameter of the enlarged diameter portion is reduced so as to be accommodated inside the retaining ring by further upward movement of the suction pipe from the state of FIG. 5 ; FIG. 7 is a front cross-sectional view showing a state in which the suction pipe is further moved upward from the state of FIG. 6 so that the lower end flange of the suction pipe lifts the retaining ring upward to separate it from the container body. FIG. 4 is a front partial cross-sectional view showing a modification of the thin-walled container discharge tool according to the first embodiment of the present disclosure. FIG. 8B is a detailed view of part D in FIG. 8A; FIG. 6 is a front partial cross-sectional view showing a state in which the discharge tool for thin-walled containers according to the second embodiment of the present disclosure is attached to the mouth portion of the container body. FIG. 10 is a diagram showing a state in which the mounting cap is removed from the container body in the state of FIG. 9 and the suction pipe is moved upward to return from the expanded diameter portion to the original state. FIG. 11 is a front cross-sectional view showing a state in which the enlarged diameter portion is reduced in diameter so as to be accommodated inside the mouth portion of the container body by moving the suction pipe further upward from the state of FIG. 10 ; FIG. 12 is a front cross-sectional view showing a state in which the enlarged-diameter portion passes through the inside of the mouth of the container body and is separated from the container body by further upward movement of the suction pipe from the state of FIG. 11 ; FIG. 10 is a side view of an enlarged diameter portion in a modified example of the discharge tool for thin-walled containers according to the second embodiment of the present disclosure; FIG. 11 is a front cross-sectional view of an enlarged diameter portion in a modified example of the discharge tool for thin-walled containers according to the second embodiment of the present disclosure; FIG. 11 is a front partial cross-sectional view showing a state in which the discharge tool for thin-walled containers according to the third embodiment of the present disclosure is attached to the mouth portion of the container body. FIG. 11 is a bottom view of a diameter-enlarging member that constitutes a thin-walled container discharger according to a third embodiment of the present disclosure; 15 is a front cross-sectional view showing a state in which the flange portion of the suction pipe comes into contact with the retaining ring and can be lifted upward by moving the suction pipe upward from the state of FIG. 14; FIG. FIG. 17 is a front cross-sectional view showing a state in which the expanded diameter portion passes through the inside of the mouth of the container body and is separated from the container body by moving the suction pipe further upward from the state of FIG. 16 ;

Hereinafter, the present disclosure will be described more specifically with reference to the drawings.

FIG. 1 shows a mounting cap 20, a pump section 30, and a nozzle head 40, which constitute a discharge tool for thin-walled containers 100, which is a first embodiment of the present disclosure. When the nozzle head 40 of the thin-walled container discharge tool 100 is pushed down, contents such as cosmetics, detergents, or foodstuffs are accommodated in the accommodation space M of the container body 10 formed as a thin-walled container shown in FIG. 4A and the like. is pressure-fed upward, and discharged outside from the nozzle hole 43a via the nozzle 43. As shown in FIG.

In this specification, claims, abstract and drawings, the side where the nozzle head 40 is located is the upper side (the upper side in FIG. 1), and the side where the suction pipe 35 of the pump section 30 is located is the lower side (the lower side in FIG. 1). side). In addition, the radially outer side is a direction away from the central axis O along a straight line that passes through the central axis O of the thin-walled container discharge tool 100 in FIGS. 1 and 4A and is perpendicular to the central axis O. , mean the direction toward the central axis O along the straight line. 1, which is the tip direction of the nozzle 43, is forward, and the rightward direction in FIG. 1 is backward.

In the present specification, claims, abstract and drawings, the term "thin-walled container" refers to a container having a wall thickness that allows the body portion to be easily folded back and bent. However, the thin-walled container does not necessarily have to have the folded portion. The thin-walled container may be, for example, the container main body 10 of the present embodiment, or a so-called pouch container formed by heat-sealing a film.

The mounting cap 20 serves to fix the pump portion 30 to the mouth portion 3 of the container body 10 (see FIG. 4A). As shown in FIG. 1, the mounting cap 20 includes an annular outer peripheral wall 21 and a ceiling wall 23 connected to the upper end of the outer peripheral wall 21 . A through hole 23 a through which the pump portion 30 passes is provided at a substantially central position in the radial direction of the top wall 23 .

The inner surface of the outer peripheral wall 21 is provided with a female threaded portion 21a that can be screwed with the male threaded portion 3b provided on the outer surface of the mouth portion 3 of the container body 10 . When the mounting cap 20 is attached to the container main body 10 by plugging engagement, instead of the female threaded portion 21a, an engaging projection capable of plugging engagement is provided on the annular projection on the container main body 10 side. may

The pump part 30 plays a role of pumping upward the contents such as cosmetics, detergents, or food contained in the containing space M of the container body 10 . The pump unit 30 includes a pump main body 31, a stem 37 biased upward so as to be able to move downward relative to the pump main body 31, and a lower part of the pump main body 31. and a suction pipe 35 leading into the body 31 .

A flange portion 32 extending radially outward is formed integrally with the upper portion of the pump body 31 . The flange portion 32, the packing 33 arranged on the lower surface of the flange portion 32, and the holding flange 53 (see FIG. 4B) of the holding ring 50, which will be described later, are held together by the top wall 23 of the mounting cap 20 and the upper end surface of the mouth portion 3 of the container body 10. By sandwiching, the pump part 30 and the retaining ring 50 are fixed to the mouth part 3 of the container body 10 .

The suction pipe 35 is fitted and fixed to the inner surface of a mounting cylinder portion 34 provided at the bottom of the pump body 31 . As shown in FIGS. 1 and 2A, the suction pipe 35 includes a tubular portion 35t that fits into the mounting tubular portion 34, and an enlarged diameter pipe that is connected to the lower end of the tubular portion 35t and integrally formed with the tubular portion 35t. and a portion 35d. In this embodiment, the suction pipe 35 is provided with a hinge portion 35a at a height position lower than the center height, and the hinge portion 35a is bent so as to protrude radially outward, resulting in an enlarged diameter portion 35d ( 4A) expands radially outward. In this embodiment, the cylindrical portion 35t refers to the entire upper portion of the suction pipe 35 shown in FIG. The lower diameter-expanded portion is referred to as an enlarged-diameter portion 35d.

FIG. 2A is an enlarged view of the lower portion of the suction pipe 35. FIG. As described above, the lower part of the suction pipe 35 is provided with the hinge portion 35a extending in the circumferential direction. (see FIG. 2B). Since the notch portions 35c are provided at four locations at regular intervals in the circumferential direction, the lower portion of the suction pipe 35 is expanded radially outward at four locations in the circumferential direction by bending the hinge portion 35a outward. A possible enlarged diameter portion 35d is formed. As shown in FIG. 2B, the expanded diameter portion 35d has a substantially constant circumferential width in the thickness direction and an arcuate cross-sectional shape. The suction pipe 35 is made of an elastic material such as synthetic resin, and is bendable at the upper and lower ends of the enlarged diameter portion 35d. As shown in FIG. 2A, the hinge portion 35a is made thinner by denting the outer side inward in the radial direction, and is bendable so that the hinge portion 35a protrudes radially outward.

On the other hand, in a state in which the enlarged diameter portion 35d of the suction pipe 35 is not expanded radially outward as shown in FIGS. The vertical distance from the lower surface of 35b is configured to be larger than the distance between the upper end surface of the mouth portion 3 of the container body 10 and the upper surface of the bottom portion 1 .

With this configuration, the lower end flange 35 b of the suction pipe 35 reaches the bottom portion 1 of the container body 10 before the mounting cap 20 is attached to the mouth portion 3 when the thin container discharger 100 is attached to the container body 10 . When the thin-walled container discharger 100 is pushed downward until the mounting cap 20 can be mounted on the mouth portion 3, the hinge portion 35a is expanded until it abuts against the body portion 2 of the container body 10 as shown in FIG. 4A. The diameter portion 35d expands radially outward. In the example shown in FIG. 4A, the hinge portion 35a is held in contact with the annular protrusion 2a provided on the lower portion of the trunk portion 2 from the inside.

In the present embodiment, the hinge portion 35a abuts on the body portion 2 to prevent the body portion 2 from bending, but the present invention is not limited to this aspect. The diameter-enlarged portion 35d may expand radially outward until the hinge portion 35a approaches the trunk portion 2, and may contact the hinge portion 35a and the like when the trunk portion 2 begins to bend.

Although the upper end of the suction pipe 35 is fitted and fixed to the inner surface of the mounting cylinder 34 provided in the lower portion of the pump body 31, the suction pipe 35 is not limited to this embodiment. and the suction pipe 35 may be integrally formed.

The upper portion of the pump body 31 is provided with a stem 37 which is biased upwardly and whose downward movement relative to the pump body 31 actuates the pump. The stem 37 is a tubular member as shown in FIGS. 1 and 4A, and is fixed to the nozzle head 40 by fitting inside a mounting tubular portion 45 that hangs down from a pressing portion 41 of the nozzle head 40, which will be described later. there is When the user depresses the pressing portion 41 of the nozzle head 40 , the stem 37 is simultaneously depressed to operate the pump inside the pump body 31 .

The nozzle head 40 includes a pressing portion 41 that applies a pressing force when the user depresses the nozzle head 40 to operate the pump, a nozzle 43 extending forward (to the left in FIG. 1) from the pressing portion 41, and a pressing portion. 41 for mounting the nozzle head 40 on the stem 37; The mounting tube portion 45 is a tubular portion extending in the vertical direction, and forms an internal flow path that guides the contents pumped from the pump portion 30 to the nozzle 43 . An engaging female thread 47a is formed on the inner surface of the engaging cylindrical portion 47, and the nozzle head 40 is fixed to the pump portion 30 by threadingly engaging with an engaging male thread 36 formed on the upper portion of the pump body 31. , the pump can be held inoperable.

As shown in FIGS. 3 and 4B, the retaining rings 50 constituting the thin-walled container discharge tool 100 include peripheral walls 51 intermittently arranged at four locations in the circumferential direction and connected to the upper portion of the peripheral wall 51 via an enlarged diameter ring 57 . It has a holding flange 53 , a seal tube 55 (see FIG. 4B) hanging from the lower surface of the holding flange 53 , and a lower end ring 59 (see FIG. 3 ) provided at the lower end of the peripheral wall 51 . As shown in FIG. 3, the peripheral wall 51 is divided into four portions in the circumferential direction by notches 52, which are intermittently arranged at equal intervals in the circumferential direction. In this embodiment, the outer diameters of the peripheral wall 51 and diameter-enlarging ring 57 are configured to be smaller than the inner diameter of the mouth portion 3 of the container body 10 .

By providing the notch 52 in the peripheral wall 51 , the contents adhering to the cylindrical portion 35 t and the enlarged diameter portion 35 d of the suction pipe 35 can be returned into the container body 10 through the notch 52 . Also, the amount of resin used can be reduced by providing the notch 52 .

In this embodiment, the retaining ring 50 is separate from the mounting cap 20, the pump section 30, and the nozzle head 40, which are other members constituting the thin-walled container discharger 100. 31 is fixed to the container body 10 (see FIG. 4A). When attaching the retaining ring 50 to the container body 10 , the pump body 31 passes through the inside of the peripheral wall 51 of the retaining ring 50 and the outer surface of the seal cylinder 55 is aligned with the inner surface of the mouth portion peripheral wall 3 a of the mouth portion 3 of the container body 10 . (see FIGS. 4A and 4B). As a result, the mouth portion 3 of the container body 10 is liquid-tightly sealed.

Next, the container main body 10 to which the thin-walled container discharge tool 100 of this embodiment is attached will be described. As shown in FIG. 4A and the like, the container body 10 has a mouth portion 3 for pouring out contents such as cosmetics, detergents, or foodstuffs stored in the storage space M, and a mouth portion 3 that continues below the mouth portion 3. It is provided with a trunk portion 2 forming an object storage space M and a bottom portion 1 closing the lower end of the trunk portion 2. - 特許庁In this embodiment, the mouth portion 3 of the container body 10 is a tubular body having a substantially circular shape in plan view.

Below the mouth portion 3, a body portion 2 having a substantially cylindrical shape is provided which is continuous with the lower end portion of the mouth portion 3 via a shoulder portion 7. As shown in FIG. The inner side of the body portion 2 forms a storage space M for contents. In this embodiment, the thin-walled container discharge tool 100 is attached to the mouth portion 3, and the contents in the accommodation space M are discharged by operating the pump.

As shown in FIG. 4A, the lower portion of the body portion 2 is provided with a constricted portion 5 that is recessed radially inward. The constriction 5 has an upper wall 5a directed radially outwards upwards and a lower wall 5b directed radially outwards downwards, as shown in FIG. 4A. . The constricted portion 5 is provided with a reinforcing rib 5r that extends vertically between the upper wall 5a and the lower wall 5b. The reinforcing ribs 5r are intermittently provided at eight locations in the circumferential direction at equal intervals. The reinforcing ribs 5r act to suppress changes in the angle formed by the upper wall 5a and the lower wall 5b of the constricted portion 5. As shown in FIG. Further, the action of the reinforcing ribs 5r can prevent the folded portion 4 from expanding radially outward. In the container body 10 shown in FIG. 4A , in order to push back the bottom portion 1 that has been folded upward with the folded portion 4 as a fulcrum, the diameter of the folded portion 4 must be increased. , the folded portion 4 is difficult to expand in diameter. Accordingly, by providing the constricted portion 5 with the reinforcing rib 5r, the bottom portion 1, which is folded upward with the folded portion 4 as a fulcrum, is pushed back downward due to an increase in internal pressure in the accommodation space M caused by a rise in temperature or the like, and returns to its original state. It is possible to prevent the container body from returning to the shape immediately after molding. It should be noted that the reinforcing ribs 5r are not sufficient at only two locations, and the constricted portion 5 can be reinforced by providing at least four locations in the circumferential direction.

As shown in FIG. 4A, the lower wall 5b of the constricted portion 5 is connected to the outer wall portion 1c of the bottom portion 1 via the folded portion 4. As shown in FIG. By folding back the outer wall portion 1c at the folded portion 4 so that the outer wall portion 1c of the bottom portion 1 overlaps with the lower wall 5b, as shown in FIG. A self-supporting leg 9 is formed. As shown in FIG. 4A, the self-supporting leg portion 9 extends downward and radially outward while the lower wall portion 5b of the constricted portion 5 and the outer wall portion 1c of the bottom portion 1 overlap each other. are connected to each other via the folded portion 4 at . As described above, in the present embodiment, the self-supporting leg portion 9 is configured by stacking the lower wall 5b and the outer wall portion 1c, so that the rigidity is high. Therefore, the container body 10 can be stably supported by the self-supporting legs 9 . The folded portion 4 is an annular portion having a substantially circular hollow portion in the cross section shown in FIG. 4A.

The bottom portion 1 includes the above-described outer wall portion 1c, an inner wall portion 1b provided radially inward of the outer wall portion 1c via a bent portion 6, and an inner wall portion 1b provided radially inward of the inner wall portion 1b and in a radial direction of the bottom portion 1. and a liquid pool portion 1a (recess) provided at a central position. As a result, the bottom portion 1 can store the liquid content in the inner wall portion 1b that slopes downward radially inward from the bent portion 6 at the upper end portion, and in the liquid reservoir portion 1a that is provided in the center in the radial direction. It forms a downward-sloping bottom shape.

In this embodiment, as shown in FIG. 4A, in a state in which the thin-walled container discharger 100 is attached to the container body 10, the lower end flange 35b of the suction pipe 35 enters the liquid pool portion 1a and is radially positioned. . With this configuration, the suction pipe 35 is not displaced in the radial direction with respect to the container body 10, so that the container body 10 can be more reliably reinforced and prevented from buckling.

In this embodiment, both the inner wall portion 1b and the liquid pool portion 1a are provided radially inward of the outer wall portion 1c, but the present invention is not limited to this aspect. Since a portion provided below the bent portion 6 on the radially inner side of the outer wall portion 1c has a liquid reservoir function, only one of the inner wall portion 1b and the liquid reservoir portion 1a may be provided. . In this embodiment, since the liquid pool 1a has a function of positioning the suction pipe 35, it is more preferable to provide the liquid pool 1a in the bottom portion 1. FIG.

The container body 10 can be formed, for example, by subjecting a parison made of a synthetic resin material to extrusion blow molding. The container body 10 can also be formed by subjecting a preform formed by injection molding, compression molding, extrusion molding, or the like to biaxial stretch blow molding. Here, the material of the container body 10 includes, for example, low density polyethylene (LDPE), high density polyethylene resin (HDPE), medium density polyethylene resin (MDPE), polypropylene (homo PP, random PP, block PP) and polyethylene terephthalate ( A synthetic resin material such as PET) can be used.

When refilling the contents in the container main body 10 to which the thin-walled container discharger 100 shown in FIG. 4A is attached, as shown in FIG. The screw engagement with the mouth portion 3 of the main body 10 is released. When the discharge tool 100 for a thin-walled container is lifted upward, the hinge part 35a is elastically deformed (bent) by being pushed from above, and the expanded diameter part 35d, which has expanded radially outward, returns to its original shape due to the restoring force. restore to That is, the elastic deformation of the hinge portion 35a is reduced, and the enlarged diameter portion 35d moves radially inward. Along with this, the hinge portion 35a also moves radially inward away from the annular protrusion 2a.

5, the upper end portion of the enlarged diameter portion 35d above the hinge portion 35a passes through the lower end ring 59 of the retaining ring 50 and enters the inner side of the peripheral wall 51. As shown in FIG. As the thin-walled container discharger 100 is further raised, the outer surface of the enlarged diameter portion 35d contacts the inner surface of the lower end ring 59 and is pressed radially inward, thereby further decreasing in diameter radially inward. As shown in FIG. 6, the enlarged diameter portion 35d is reduced in diameter to a width that allows it to enter the inner side of the peripheral wall 51 of the retaining ring 50. As shown in FIG.

In this embodiment, the outer diameter of the lower end flange 35b of the suction pipe 35 is larger than the inner diameter of the lower end ring 59 of the retaining ring 50 and less than the inner diameter of the mouth portion 3 . 6, when the upper surface of the lower end flange 35b comes into contact with the lower surface of the lower end ring 59 by pulling up the discharge tool 100 for thin-walled containers, the suction pipe 35 moves the retaining ring 50 upward as shown in FIG. lift to. When the retaining ring 50 is lifted by the suction pipe 35, the seal cylinder 55 is disengaged from the inner surface of the mouth peripheral wall 3a, and the enlarged diameter portion 35d is reduced in diameter so as to fit inside the retaining ring 50. passed through and taken out.

After removing the thin-walled container dispensing tool 100 from the container body 10 , the user refills the container body 10 with contents, and then attaches the thin-walled container dispensing tool 100 to the container body 10 again. As shown in FIG. 7, the enlarged diameter portion 35d of the suction pipe 35 is reduced in diameter so as to be accommodated in the retaining ring 50, so that it can easily pass through the inside of the mouth portion 3 and enter the accommodation space M of the container body 10. can be re-entered.

When the retaining ring 50 passes downward inside the mouth portion 3, the seal cylinder 55 of the retaining ring 50 is again fitted to the inner surface of the mouth portion peripheral wall 3a (see FIG. 6), and the lower end flange 35b closes to the liquid pool portion 1a. Inwardly (see FIG. 5), the enlarged-diameter portion 35d expands radially outward again (see FIG. 4A).

Next, a modified example of the discharge tool 100 for thin-walled containers according to this embodiment will be described with reference to FIGS. 8A and 8B. The thin-walled container discharge tool 101 of this modified example has a structure similar to that of the first embodiment, except that the structure of the retaining ring 50 is different from that of the first embodiment. Therefore, the differences from the first embodiment will be mainly described here.

As shown in FIG. 8B, a discharge tool 101 for a thin-walled container according to this modification includes a peripheral wall 51, a holding flange 53a connected to the upper portion of the peripheral wall 51 via a diameter-enlarging ring 57, and a holding flange 53a hanging down from the outer peripheral end of the holding flange 53a. and an outer peripheral wall 58 that Two annular protrusions 58a and 58b are arranged vertically and protrude radially outward on the outer surface of the lower portion of the outer peripheral wall 58 . The inner surface of bottleneck 3e formed below male threaded portion 3b of container body 10 is undercut-engaged at a height position between these two annular projections 58a, 58b, so that retaining ring 50 is secured to container body 10. It is fixed in the radial direction and the vertical direction with respect to the mouth portion 3 of the. Also in this embodiment, the diameters of the peripheral wall 51 and the diameter expansion ring 57 are configured to be smaller than the inner diameter of the mouth portion 3 of the container body 10 .

The flange portion 32 of the pump portion 30 and the packing 33 disposed on the lower surface of the flange portion 32 are sandwiched between the ceiling wall 23 of the mounting cap 20 and the upper end surface of the mouth portion 3 of the container body 10, so that the pump portion 30 is moved to the container body. It is fixed to the mouth 3 of 10 . At this time, the retaining flange 53a of the retaining ring 50 is preloaded downward by the packing 33, and the annular protrusion 58a of the retaining ring 50 is undercut-engaged with the opening 3 with almost no clearance.

When refilling the contents in the container main body 10 to which the thin-walled container discharger 101 shown in FIG. Release the screw engagement of Then, when the mounting cap 20 is gripped and the pump portion 30 is lifted upward, the packing 33 is separated from the holding flange 53a of the holding ring 50 . Further, the hinge portion 35a is elastically deformed (bent) by being pushed from above, and the expanded diameter portion 35d, which has expanded radially outward, restores its original shape due to the restoring force. That is, the elastic deformation of the hinge portion 35a is reduced, and the enlarged diameter portion 35d moves radially inward. Along with this, the hinge portion 35a also moves radially inward away from the annular protrusion 2a.

When the pump portion 30 is further lifted upward, the upper end portion of the enlarged diameter portion 35 d above the hinge portion 35 a passes through the lower end ring 59 of the retaining ring 50 and enters inside the peripheral wall 51 . As the pump portion 30 is further raised, the outer surface of the expanded diameter portion 35d contacts the inner surface of the lower end ring 59 and is pressed radially inward, thereby further reducing the diameter inward in the radial direction. The enlarged diameter portion 35 d is reduced in diameter to a width that allows it to enter the inside of the peripheral wall 51 of the retaining ring 50 .

In this modification, the outer diameter of the lower end flange 35b of the suction pipe 35 is larger than the inner diameter of the lower end ring 59 of the retaining ring 50 and smaller than the inner diameter of the mouth portion 3. As shown in FIG. Therefore, when the upper surface of the lower end flange 35b abuts the lower surface of the lower end ring 59 by pulling up the discharge tool 101 for thin-walled containers, the suction pipe 35 lifts the retaining ring 50 upward. When the retaining ring 50 is lifted by the suction pipe 35, the undercut engagement of the bottleneck 3e with the annular protrusions 58a and 58b is released, and the enlarged diameter portion 35d is reduced in diameter so as to be accommodated within the retaining ring 50. It passes through the part 3 and is taken out to the outside.

After removing the thin-walled container discharge tool 101 from the container main body 10, the user refills the container main body 10 with contents, and then attaches the thin-walled container discharge tool 101 to the container main body 10 again. Since the enlarged diameter portion 35d of the suction pipe 35 has already been reduced in diameter so as to be accommodated within the retaining ring 50, it can easily pass through the inside of the mouth portion 3 and re-enter the accommodation space M of the container body 10. can.

When the retaining ring 50 passes downward inside the mouth portion 3, the annular protrusions 58a and 58b of the retaining ring 50 are again undercut-engaged with the bottle neck 3e of the mouth portion peripheral wall 3a, and the lower end flange 35b becomes a liquid pool portion. The diameter-enlarged portion 35d abuts against the inside 1a and expands in diameter again toward the outside in the radial direction.

As described above, in the present embodiment, the stem 37 is biased upward, and the downward movement of the stem 37 pushes upward the contents contained in the container body 10, which is a thin-walled container. and a nozzle head 40 that is mounted on the upper end of a stem 37 and that activates the pump section 30 by pressing down to discharge contents from a nozzle 43, wherein the pump section 30 is The suction pipe 35 has a suction pipe 35 that hangs down so as to be able to contact the bottom 1 of the container body 10 and sucks the contents. The discharge tool 100 for a thin-walled container has an enlarged-diameter portion 35d that expands radially outward by coming into contact with the container body 10, and holds the outer diameter of the enlarged-diameter portion 35d equal to or less than the inner diameter of the mouth portion 3 of the container body 10. (retaining ring 50). By adopting such a configuration, it is possible to reduce the environmental load by using a thin-walled container, while facilitating replacement of the thin-walled container discharge tool 100 and refilling of contents. That is, in this embodiment, when the thin-walled container discharge tool 100 is taken out in order to refill the contents in the container main body 10, the outer diameter of the enlarged diameter portion 35d is reduced to the inner diameter of the retaining ring 50 or less. , can easily pass through the mouth portion 3 of the container body 10 . Further, in this embodiment, even if the pressing portion 41 of the nozzle head 40 is pushed down with a strong force, the lower end flange 35b of the suction pipe 35 abuts against the bottom portion 1 of the container body 10, and the discharge tool 100 for thin-walled containers is excessively displaced. In addition to suppressing downward displacement, the enlarged diameter portion 35d abuts against the trunk portion 2 from the inside to reinforce the trunk portion 2. As shown in FIG. Therefore, it is possible to effectively suppress buckling of the trunk portion 2 due to a large vertical load acting on the thin container body 10 .

Further, in the present embodiment, the enlarged diameter portion 35d is configured to be connected to the lower end portion of the cylindrical portion 35t and integrally formed with the cylindrical portion 35t. By adopting such a configuration, it is not necessary to provide a dedicated member for reinforcing the body portion 2 of the container body 10, so that the member cost and manufacturing cost of the thin-walled container discharger 100 can be suppressed.

Further, in the present embodiment, the enlarged diameter portion 35d has a hinge portion 35a extending in the circumferential direction, and is configured to expand in diameter by bending the hinge portion 35a so as to protrude radially outward. By adopting such a configuration, the expanded diameter portion 35d can be integrally formed with a relatively simple configuration in which the suction pipe 35 is provided with the hinge portion 35a and the notch 35c.

In this embodiment, the holding portion (holding ring 50) is configured to engage with the container body 10 when the thin-walled container discharge tool 100 is attached to the container body 10. As shown in FIG. By adopting such a configuration, by engaging/separating the retaining ring 50 from/to the mouth portion 3 of the container body 10, the enlarged diameter portion 35d can be switched between enlarged diameter/diameter reduced diameter. In synchronism with the insertion into/removal from the container body 10 of the container body 10, the diameter expansion/diameter reduction of the diameter expansion portion 35d can be automatically switched.

Next, a discharge tool 200 for thin-walled containers, which is a second embodiment of the present disclosure, will be described with reference to FIGS. 9 to 13B. The configuration of the present embodiment is similar to that of the first embodiment, except that the shape of the holding portion and the shape of the enlarged diameter portion are different from those of the first embodiment. Therefore, the differences from the first embodiment will be mainly described here.

In the present embodiment, a flange portion 32 extending radially outward is integrally formed on the upper portion of the pump body 31 as in the first embodiment. By clamping the flange portion 32 and the packing 33 arranged on the lower surface of the flange portion 32 between the top wall 23 of the mounting cap 20 and the upper end surface of the mouth portion 3 of the container body 10 , the pump portion 30 is connected to the mouth of the container body 10 . It is fixed to part 3.

The suction pipe 35 is fitted and fixed to the inner surface of a mounting cylinder portion 34 provided at the bottom of the pump body 31 . In this embodiment, the suction pipe 35 has a first hinge 35a1 and a second hinge 35a2 vertically aligned at a height position below the central height, as shown in FIG. The upper enlarged diameter portion 35d1 (enlarged diameter portion) and the relay portion 35e are connected by a first hinge 35a1 (hinge portion), and the intermediate portion 35e and the lower enlarged diameter portion 35d2 (enlarged diameter portion) are connected by a second hinge 35a2 (hinge portion). part). As shown in FIG. 9, the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are enlarged radially outward by bending the first hinge 35a1 and the second hinge 35a2 so as to protrude outward. .

In the present embodiment, the enlarged diameter portion and the hinge portion are arranged at four locations in the circumferential direction at intervals of 90 degrees, as in the first embodiment. Flat holding arms 35f and 35g extend inward in the radial direction from a relay portion 35e that connects an upper enlarged diameter portion 35d1 and a lower enlarged diameter portion 35d2 that are enlarged in diameter in the front-rear direction (horizontal direction in FIG. 9). . Engagement projections 35f1 and 35g1 that can be undercut-engaged with each other are formed at the inner ends of the holding arms 35f and 35g, respectively. As will be described later, when the suction pipe 35 of the thin-walled container discharge tool 200 is removed from the container body 10 when the content is refilled, the holding arms 35f and 35g engage with each other undercut to form an enlarged diameter portion. The state in which the outer diameter is reduced to the inner diameter of the mouth portion 3 or less can be maintained. That is, the holding arms 35f and 35g function as holding portions that hold the outer diameter of the expanded diameter portion to be equal to or less than the inner diameter of the mouth portion 3 of the container body 10. As shown in FIG.

In this embodiment, the holding arms 35f and 35g are not provided in the relay portion 35e connecting the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2, which are enlarged in diameter in the direction perpendicular to the plane of FIG. Further, in this embodiment, the retaining ring 50 as in the first embodiment is not provided.

Also in this embodiment, the suction pipe 35 is made of an elastic member such as synthetic resin, and is bendable at the upper end portion of the upper enlarged diameter portion 35d1 and the lower end portion of the lower enlarged diameter portion 35d2. The outer sides of the first hinge 35a1 and the second hinge 35a2 are dented radially inward to be thinned, and the first hinge 35a1 and the second hinge 35a2 can be bent so as to protrude radially outward. . In this embodiment, by arranging two of the first hinge 35a1 and the second hinge 35a2 in the longitudinal direction of the enlarged diameter portion, it is possible to prevent excessive stress from being applied to the bent portion.

On the other hand, in a state where the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 of the suction pipe 35 are not expanded radially outward, the lower surface of the packing 33 of the thin-walled container discharger 200 and the lower surface of the lower end flange 35b of the suction pipe 35 are aligned. is set to be larger than the distance between the top surface of the mouth portion 3 of the container body 10 and the top surface of the bottom portion 1 .

With this configuration, the lower end flange 35 b of the suction pipe 35 reaches the bottom portion 1 of the container body 10 before the mounting cap 20 is attached to the mouth portion 3 when the thin container discharger 200 is attached to the container body 10 . When the thin-walled container discharger 200 is pushed downward until the mounting cap 20 can be mounted on the mouth portion 3, the engaging projections 35f1 and 35g1 of the holding arms 35f and 35g engage with each other as shown in FIG. The upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 expand radially outward until the intermediate portion 35e comes into contact with the annular protrusion 2a of the body portion 2. As shown in FIG.

In this embodiment, as compared with the first embodiment, the relay portion 35e that abuts on the body portion 2 has a length in the vertical direction. Concentrated stress can be made less likely to occur at the contact point.

In addition, in the present embodiment, the trunk portion 2 is configured to be prevented from bending by the contact of the relay portion 35e with the trunk portion 2, but the present invention is not limited to this aspect. The diameters of the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are expanded radially outward until the relay portion 35e approaches the body portion 2, and are brought into contact with the relay portion 35e and the like when the body portion 2 begins to bend. may be configured.

In this embodiment, as shown in FIG. 9, when the thin container discharger 200 is attached to the container body 10, the lower end flange 35b of the suction pipe 35 enters the liquid pool portion 1a and is radially positioned. . With this configuration, the suction pipe 35 is not displaced in the radial direction with respect to the container body 10, so that the container body 10 can be more reliably reinforced and prevented from buckling.

When refilling the contents in the container main body 10 to which the thin-walled container discharger 200 shown in FIG. 9 is attached, as shown in FIG. The screw engagement with the mouth portion 3 of the main body 10 is released. Then, when the thin-walled container dispensing tool 200 is pulled upward, the first hinge 35a1 and the second hinge 35a2 are elastically deformed (bent) by being pushed from above, and the diameter of the upper enlarged diameter portion 35d1 expanded radially outward. And the lower enlarged diameter portion 35d2 is restored to its original shape by the restoring force. That is, the elastic deformation of the first hinge 35a1 and the second hinge 35a2 is reduced, and the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 move radially inward. Along with this, the relay portion 35e is also separated from the annular protrusion 2a of the body portion 2 and moves radially inward.

When the thin-walled container discharger 200 is further lifted upward from the state of FIG. 10, a portion radially outward from the central position in the longitudinal direction of the upper enlarged diameter portion 35d1 is formed above the shoulder portion 7 of the container main body 10, forming a container. Since it contacts with the corner portion 7a protruding inwardly of the main body 10 and is pressed radially inward, the diameter of the main body 10 is reduced. Then, the diameter of the upper enlarged diameter portion 35d1 is reduced to a width that allows it to enter the inner side of the peripheral wall 3a of the mouth portion 3, as shown in FIG.

At this time, the engaging projections 35f1 and 35g1 of the holding arms 35f and 35g approach each other and engage undercut (see FIG. 11). Due to the engagement between the engaging protrusions 35f1 and 35g1, the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 can be maintained in a reduced diameter state to a width that allows them to pass through the inner side of the mouth peripheral wall 3a.

In this embodiment, the outer diameter of the lower end flange 35b of the suction pipe 35 is smaller than the inner diameter of the mouth portion 3 . Therefore, in FIG. 12, the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2, which are reduced in diameter so as to be accommodated in the lower end flange 35b and the mouth peripheral wall 3a by pulling up the discharge tool 200 for a thin container, 3 and taken out to the outside.

After removing the thin-walled container discharger 200 from the container body 10, the user refills the container body 10 with the content, and then attaches the thin-walled container discharger 200 to the container body 10 again. As shown in FIG. 11, the diameters of the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 of the suction pipe 35 are reduced so as to be accommodated within the mouth portion peripheral wall 3a, so that they can easily pass through the inside of the mouth portion 3 to reach the container. It can be re-entered into the accommodation space M of the main body 10 .

After the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 pass downward inside the mouth portion 3, the lower end flange 35b comes into contact with the inside of the liquid pool portion 1a (see FIG. 10). Due to the contact of the lower end flange 35b with the inside of the liquid pool portion 1a, the first hinge 35a1 and the second hinge 35a2 are bent so as to protrude outward, and the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are bent in the radial direction. Expand outward. Due to the diameter expansion of the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2, a force acts in the direction of separating the holding arms 35f and 35g from each other, so that the engagement projections 35f1 and 35g1 are disengaged from the undercut engagement (FIG. 10). reference). By releasing the engagement between the engaging projections 35f1 and 35g1, the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 face radially outward until the relay portion 35e again enters and abuts the annular projection 2a of the trunk portion 2. to expand the diameter (see FIG. 9).

Next, a modified example of the discharge tool 200 for thin-walled containers according to this embodiment will be described with reference to FIGS. 13A and 13B. This modification is similar to the second embodiment except that the shapes of holding arms 35f and 35g extending from the relay portion 35e are different. Therefore, the description will focus on the differences from the second embodiment.

In this modified example, as shown in FIGS. 13A and 13B, a holding arm 35f has a substantially cylindrical shape, and a through hole 35f2 passing through the relay portion 35e is formed inside the holding arm 35f. An annular engaging projection 35f1 is provided at the tip of the holding arm 35f. In addition, the holding arm 35g has a solid, substantially columnar shape, and an annular engaging projection 35g1 is provided at the tip thereof. As in the second embodiment, the engaging protrusions 35f1 and 35g1 are undercut-engaged with each other so that the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 can pass through the inside of the mouth peripheral wall 3a. It is possible to maintain the reduced diameter state.

In this modification, the holding arms 35f and 35g are cylindrical and columnar, respectively, so that when the engaging protrusions 35f1 and 35g1 are engaged with each other undercut, they are not only vertically oriented in FIGS. It is possible to make it difficult for positional deviation to occur in the direction as well. Therefore, the reduced diameter state can be maintained so that the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 can pass through the inside of the mouth portion 3 more accurately.

As described above, in the present embodiment, the holding portions (holding arms 35f and 35g) are configured such that the outer diameter of the enlarged diameter portions (upper enlarged diameter portion 35d1 and lower enlarged diameter portion 35d2) is equal to that of the mouth portion 3 of the container body 10. It is configured to have a pair of engaging portions (engaging projections 35f1 and 35g1) that are held below the inner diameter. By adopting such a configuration, the holding portion is formed integrally with the suction pipe 35 without providing a separate member such as the holding ring 50, so that the enlarged diameter portion can pass through the inner side of the mouth peripheral wall 3a. can be maintained in a diameter-reduced state. Therefore, the parts cost and assembly cost of the thin-walled container dispensing tool 200 can be suppressed.

FIG. 14 shows a mounting cap 20, a pump section 30, a nozzle head 40, and a retaining ring 50 that constitute a thin-walled container dispensing tool 300 according to a third embodiment of the present disclosure. When the nozzle head 40 is pushed down, the thin-walled container discharger 300 is configured to contain contents such as cosmetics, detergents, or foodstuffs accommodated in the accommodation space M of the container body 10 formed as a thin-walled container shown in FIG. 14 and the like. is pressure-fed upward, and discharged outside from the nozzle hole 43a via the nozzle 43. As shown in FIG.

Note that the thin-walled container discharge tool 300 of the present embodiment has a configuration similar to that of the first embodiment, except that the configuration of the suction pipe 35 is different. Therefore, the differences from the first embodiment will be mainly described here.

The suction pipe 35 is fitted and fixed to the inner surface of a mounting cylinder portion 34 provided at the bottom of the pump body 31 . In this embodiment, the suction pipe 35 is formed separately from a tubular member 135t that fits into the mounting tubular portion 34 and hangs down toward the bottom portion 1 of the container body 10, and is formed in a tubular shape. A diameter-enlarging member 135k is attached to the lower portion of the member 135t and has an enlarged-diameter portion 35d.

As shown in FIGS. 15 and 16, the diameter expanding member 135k includes a tubular fitting portion 35m having a bottomed tubular shape to which the lower end portion of the tubular member 135t is fitted, and a fitting tubular portion 35m extending downward from the lower end portion of the fitting tubular portion 35m. A continuous upper enlarged diameter portion 35d1 and a lower enlarged diameter portion 35d2, a cylindrical abutment cylinder portion 35d3 further continuous to the lower end of the lower enlarged diameter portion 35d2, an upper enlarged diameter portion 35d1 and a lower enlarged diameter portion 35d2 (enlarged diameter portion 35d), an extended tubular portion 35j extending downward from the peripheral edge of a tubular portion opening 35m2 provided in the bottom portion 35m1 of the fitting tubular portion 35m and having a suction opening 35j1 formed at its lower end. It has

As shown in FIG. 16, the upper enlarged diameter portion 35d1, the lower enlarged diameter portion 35d2, and the abutting tubular portion 35d3, which are continuous below the fitting tubular portion 35m, are connected to each other by the hinge portion 35a and the side hinge 35h. The upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are connected via the hinge portion 35a so as to be arranged in a row in the vertical direction. Further, the upper end portion of the upper enlarged diameter portion 35d1 continues to the lower end portion of the peripheral wall of the mounting cylinder portion 35m via the side hinge 35h. The lower end portion of the lower enlarged diameter portion 35d2 is similarly connected to the contact cylinder portion 35d3 via the side hinge 35h.

The upper enlarged-diameter portion 35d1 and the lower enlarged-diameter portion 35d2 shown in FIG. 16 are divided into eight parts in the circumferential direction and provided at approximately equal intervals with a predetermined gap therebetween. With such a configuration, as shown in FIG. 14, the diameters of the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 can be expanded radially outward at eight locations in the circumferential direction by outward bending of the hinge portion 35a. It is The enlarged diameter member 135k is made of an elastic material such as synthetic resin, and is bendable by the side hinges 35h at the upper end portion of the upper enlarged diameter portion 35d1 and the lower end portion of the lower enlarged diameter portion 35d2. As shown in FIG. 16, the hinge portion 35a is made thinner by denting the outer side inward in the radial direction. 35a is bendable so as to protrude radially outward. The side hinge 35h is also thinned by denting the outer side inward in the radial direction, and the dented side of the side hinge 35h (see FIG. 16) can be bent to form an acute angle.

16, the packing 33 of the thin-walled container discharger 300 ( 4B, etc.) and the lower surface of the abutment tube portion 35d3 of the suction pipe 35 are configured to be larger than the distance between the upper end surface of the mouth portion 3 of the container body 10 and the upper surface of the bottom portion 1.

With this configuration, when the thin-walled container discharger 300 is attached to the container body 10, the abutting cylindrical portion 35d3 of the suction pipe 35 reaches the bottom portion 1 of the container body 10 before the attachment cap 20 is attached to the mouth portion 3. do. Then, when the thin-walled container discharger 300 is pushed downward until the mounting cap 20 can be attached to the mouth portion 3, the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d1 are pushed until the hinge portion 35a contacts the trunk portion 2 of the container body 10. The diameter portion 35d2 expands radially outward. In the example shown in FIG. 14, the hinge portion 35a is held in contact with the annular protrusion 2a provided on the lower portion of the trunk portion 2, which is entered from the inside.

In this embodiment, as shown in FIG. 14, when the thin-walled container discharger 300 is attached to the container body 10, the lower end of the extension cylindrical portion 35j is positioned above the liquid pool portion 1a in the bottom portion 1 of the container body 10. are also configured to be positioned slightly upwards. Moreover, as shown in FIG. 15, notch portions 35d3c are provided at two locations in the circumferential direction on the lower surface of the contact cylinder portion 35d3. With such a configuration, the contents in the housing space M of the container main body 10 move radially inward through the notch portion 35d3c and are sucked into the pump portion 30 through the suction opening 35j1.

In this embodiment, the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are formed above the suction opening 35j1 of the suction pipe 35. As shown in FIG. That is, the suction opening 35j1 of the suction pipe 35 hangs down from the pump section 30 and extends further downward beyond the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2. In the first embodiment, the content tends to remain on the bottom portion 1 of the container body 10 because the content is sucked through the cutout portion 35c between the enlarged diameter portions 35d. In this embodiment, by bringing the suction opening 35j1 of the extension cylinder 35j close to the liquid pool 1a of the bottom 1, the remaining amount of contents in the storage space M can be reduced through the suction opening 35j1.

In the present embodiment, the hinge portion 35a contacts the body portion 2 to prevent the body portion 2 from bending inward in the radial direction, but the present invention is not limited to this aspect. The upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 expand radially outward until the hinge portion 35a approaches the trunk portion 2, and contact the hinge portion 35a and the like when the trunk portion 2 begins to bend. may be configured.

Although the upper end of the suction pipe 35 is fitted and fixed to the inner surface of the mounting cylinder 34 provided in the lower portion of the pump body 31, the suction pipe 35 is not limited to this embodiment. and the tubular member 135t of the suction pipe 35 may be integrally formed.

In this embodiment, as shown in FIG. 14, in a state where the thin-walled container discharger 300 is attached to the container body 10, the abutting cylindrical portion 15d3 of the suction pipe 35 enters the liquid pool portion 1a and is radially positioned. be done. With this configuration, the suction pipe 35 is not displaced in the radial direction with respect to the container body 10, so that the container body 10 can be more reliably reinforced and prevented from buckling.

When refilling the contents in the container main body 10 to which the thin-walled container discharger 300 shown in FIG. release the screw engagement. Then, when the discharge tool 300 for thin-walled containers is pulled upward, the hinge portion 35a and the side hinge 35h are elastically deformed (bent) by being pushed from above, and the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d1 and the lower portion, which have been expanded radially outward, are deformed (bent). The expanded diameter portion 35d2 restores to its original shape due to the restoring force. That is, the elastic deformation of the hinge portion 35a and the side hinge 35h is reduced, and the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 move radially inward. Along with this, the hinge portion 35a also moves radially inward away from the annular protrusion 2a.

When the thin-walled container discharger 300 is pulled upward while the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are moved radially inward, the upper end portion of the upper enlarged diameter portion 35d1 is pushed up to the lower end ring 59 of the retaining ring 50 (Fig. 3) and enters inside the peripheral wall 51 . As the thin-walled container discharger 300 is further lifted, the outer surface of the upper enlarged diameter portion 35d1 contacts the inner surface of the lower end ring 59 and is pressed radially inward, thereby further decreasing in diameter radially inward. As shown in FIG. 16, the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are reduced in diameter to a width that allows them to enter the inner side of the peripheral wall 51 of the retaining ring 50. As shown in FIG.

In this embodiment, the outer diameter of the flange 35 d 4 of the suction pipe 35 is larger than the inner diameter of the lower end ring 59 of the retaining ring 50 and smaller than the inner diameter of the mouth portion 3 . 16, when the upper surface of the flange 35d4 comes into contact with the lower surface of the lower end ring 59 by further lifting the discharge tool 300 for thin-walled containers, the suction pipe 35 lifts the retaining ring 50 upward. When the retaining ring 50 is lifted by the suction pipe 35, the seal cylinder 55 is disengaged from the inner surface of the mouth peripheral wall 3a, and the diameters of the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 are reduced so as to be accommodated within the retaining ring 50. In this state, it passes through the opening 3 and is taken out to the outside (see FIG. 17).

After removing the thin-walled container discharge tool 300 from the container body 10, the user refills the container body 10 with the contents, and then attaches the thin-walled container discharge tool 300 to the container body 10 again. As shown in FIG. 17, the diameters of the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 of the suction pipe 35 are reduced so as to be accommodated within the retaining ring 50, so that they can easily pass through the mouth portion 3 to reach the container body. 10 can be re-entered into the accommodation space M (see FIG. 16).

When the retaining ring 50 passes downward inside the mouth portion 3, the seal cylinder 55 of the retaining ring 50 is again fitted to the inner surface of the mouth portion peripheral wall 3a (see FIG. 16), and the discharge tool 300 for a thin-walled container is formed. As a result, the contact cylinder portion 35d3 comes into contact with the inside of the liquid pool portion 1a (see FIG. 14), and the upper enlarged diameter portion 35d1 and the lower enlarged diameter portion 35d2 expand radially outward again (see FIG. 14). ).

As described above, in the present embodiment, the suction pipe 35 is formed separately from the cylindrical member 135t and the cylindrical member 135t, and is attached to the lower portion of the cylindrical member 135t. The enlarged diameter portion 35d is formed above the suction opening 35j1 provided in the lower portion of the suction pipe 35. As shown in FIG. By adopting such a configuration, the suction opening 35j1 of the suction pipe 35 can be arranged close to the bottom portion 1, so that the remaining amount of the contents can be reduced by sucking the contents in the storage space M through the suction opening 35j1. can be reduced.

Further, in the present embodiment, the enlarged diameter member 135k extends downward from the lower portion of the tubular member 135t to the inner side of the enlarged diameter portion 35d in the radial direction, and has an extended tubular portion 35j formed with a suction opening 35j1 at its lower end. configured to have By adopting such a configuration, the suction opening 35j1 of the suction pipe 35 can be arranged close to the liquid pooling portion 1a at the center of the bottom portion 1 of the container body 10, so that the remaining amount of contents in the storage space M can be reduced. can be further reduced.

Further, in this embodiment, a cylindrical contact portion 35d3 capable of coming into contact with the bottom portion 1 of the container body 10 is formed at the lower portion of the diameter-enlarging member 135k. is configured to provide a notch portion 35d3c for passing through in the radial direction. By adopting such a configuration, it is possible to secure a flow path for the contents toward the suction opening 35j1 of the suction pipe 35, so that the contents in the storage space M can be easily sucked through the suction opening 35j1. Remaining amount can be reduced.

In this embodiment, the suction pipe 35 and the holding portion (holding ring 50) are configured separately, but the configuration is not limited to this. As in the second embodiment, the holding portions (holding arms 35f and 35g) may be integrally formed with the enlarged diameter portion 35d (upper enlarged diameter portion 35d1 and lower enlarged diameter portion 35d2) (see FIGS. 10 and 13B). . That is, a pair of engagements in which the holding portions (holding arms 35f, 35g) hold the outer diameter of the enlarged diameter portion 35d (upper enlarged diameter portion 35d1 and lower enlarged diameter portion 35d2) equal to or smaller than the inner diameter of the mouth portion 3 of the container body 10. It may be configured to have portions (engaging protrusions 35f1 and 35g1).

Although the present disclosure has been described with reference to figures and examples, it should be noted that various variations and modifications will be readily apparent to those skilled in the art based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, functions included in each component can be rearranged so as not to be logically inconsistent, and multiple components can be combined into one or divided. It should be understood that the scope of the present invention includes these.

For example, in the first and second embodiments, the enlarged diameter portion is configured to have a substantially arc-shaped cross section obtained by dividing the cylindrical shape into four in the circumferential direction, but the invention is not limited to this aspect. The enlarged diameter portion may be configured to have a flat plate-shaped cross section, for example.

Further, in the first and second embodiments, one or two hinge portions are provided at substantially the center height of the enlarged diameter portion, but the present invention is not limited to this aspect. One enlarged diameter portion may be provided with three or more hinge portions. Further, at least one of the upper end portion and the lower end portion of the enlarged diameter portion may be provided with a hinge portion so that the diameter of the enlarged diameter portion is enlarged by a smaller force.

In addition, in the first and third embodiments, the cutout portion 52 is provided in the peripheral wall 51 of the retaining ring 50, but the present invention is not limited to this embodiment, and a configuration in which the cutout portion 52 is not provided may be employed.

Further, in the first to third embodiments, the lower wall 5b of the constricted portion 5 and the outer wall portion 1c of the bottom portion 1 are connected at the lower end by the annular folded portion 4 having a hollow portion. , is not limited to this aspect. The folded portion 4 may be configured by, for example, a hinge portion having a thin portion.

According to the present disclosure, thin-walled container discharge tools 100, 200, and 300 are proposed that facilitate replacement of the discharge tool and refilling of contents while reducing the amount of resin by using a thin-walled container to reduce the environmental load. becomes possible.

Reference Signs List 1 bottom portion 1a liquid pool portion 1b inner wall portion 1c outer wall portion 2 body portion 2a annular protrusion 3 mouth portion 3a mouth portion peripheral wall 3b male screw portion 3e bottle neck 4 folded portion 5 neck portion 5a upper wall 5b lower wall 5r reinforcing rib 6 Bending portion 7 Shoulder portion 7a Corner portion 9 Self-supporting leg portion 10 Container body 20 Mounting cap 21 Peripheral wall 21a Female screw portion 23 Ceiling wall 23a Through hole 30 Pump portion 31 Pump body 32 Flange portion 33 Packing 34 Mounting cylinder portion 35 Suction pipe 35a Hinge Part 35a1 First hinge (hinge part)
35a2 second hinge (hinge part)
35b lower end flange (lower end)
35c notch portion 35d enlarged diameter portion 35d1 upper enlarged diameter portion (enlarged diameter portion)
35d2 Lower enlarged diameter portion (diameter enlarged portion)
35d3 contact cylinder portion 35d3c notch portion 35d4 flange portion 35e relay portion 35f, 35g holding arm (holding portion)
35f1, 35g1 engagement protrusion (engagement portion)
35f2 Through hole 35h Side hinge 35j Extension cylinder 35j1 Suction opening 35m Attachment cylinder 35m1 Bottom 35m2 Tube opening 35t Cylindrical part 36 Engagement male screw 37 Stem 40 Nozzle head 41 Pressing part 43 Nozzle 43a Nozzle hole 45 Attachment cylinder 47 Engagement Combined tube portion 47a Engagement female thread 50 Retaining ring (retaining portion)
51 Peripheral wall 53, 53a Holding flange 55 Seal tube 57 Expanding ring 58 Peripheral wall 58a, 58b Annular projection 59 Lower end ring 100, 101, 200, 300 Dispensing tool for thin container 135k Expanding member 135t Cylindrical member M Housing space O Center axis

Claims (8)

a pump unit that has a stem that is biased upward, and pumps upward the contents contained in the container body, which is a thin-walled container, by downward movement of the stem;
A discharge tool for a thin-walled container, comprising: a nozzle head mounted on the upper end of the stem and configured to operate the pump section by pressing down to discharge the contents from the nozzle,
The pump part has a suction pipe that hangs down so as to be able to contact the bottom of the container body and sucks the contents,
The suction pipe has an enlarged diameter portion that expands radially outward when the lower end of the suction pipe comes into contact with the bottom portion of the container body,
The thin-walled container dispensing tool is characterized by comprising a holding part that holds the outer diameter of the enlarged diameter part to be equal to or less than the inner diameter of the mouth part of the container body. The suction pipe has a tubular member and a diameter expanding member formed separately from the tubular member and attached to a lower portion of the tubular member and having the enlarged diameter portion,
2. The discharge tool for thin-walled containers according to claim 1, wherein said enlarged diameter portion is formed above a suction opening provided in a lower portion of said suction pipe. 3. The diameter-enlarging member according to claim 2, wherein the diameter-enlarging member has an extended tubular portion extending downward from a lower portion of the tubular member to a radially inner side of the diameter-enlarging portion and having the suction opening formed in a lower end portion thereof. Dispenser for thin-walled containers. At the bottom of the diameter-expanding member, an abutting tubular portion is formed which can come into contact with the bottom portion of the container body. 4. The discharge tool for thin-walled containers according to claim 2 or 3, provided with a 2. The discharge tool for a thin-walled container according to claim 1, wherein said enlarged diameter portion continues to a lower end portion of said tubular portion and is integrally formed with said tubular portion. The thin-walled portion according to any one of claims 1 to 5, wherein the enlarged diameter portion has a hinge portion extending in the circumferential direction, and the diameter is enlarged by bending the hinge portion so as to protrude radially outward. Dispenser for container. The thin-walled container dispensing tool according to any one of claims 1 to 6, wherein the holding portion engages with the container body when the thin-walled container dispensing tool is attached to the container body. 7. The discharge for a thin-walled container according to claim 1, wherein said holding portion has a pair of engaging portions for holding an outer diameter of said enlarged diameter portion equal to or less than an inner diameter of said mouth portion of said container body. equipment.

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