Coating container

Abstract

To reduce the number of parts to be changed in order to obtain a configuration which keeps a discharged liquid content amount appropriate in one coating operation.SOLUTION: A coating plug 13 is provided with a coating part 24 and a base part 23, and a flow path X is provided between the outer peripheral surface of the coating part and an inner peripheral surface of a discharge hole 15. The base part includes a plate part 25 and a support protrusion 26. An annular seal part 13a is provided on an upper surface of the plate part, the annular seal part being configured to be releasably abutted downward against an opening peripheral edge part of the discharge hole 15 on an inner surface of an inner plug 12, and to block communication between the flow path and the inside of a container body 11. The support protrusion is provided on a portion of the upper surface of the plate part that is located on an inner side in a radial direction from the annular seal part, and a plurality of ribs 10a that protrude radially outward are formed at intervals in a circumferential direction on the outer peripheral surface of a portion of the coating part that protrudes upward from the discharge hole. When the coating plug moves downward, the ribs abut or come close to the inner plug, and an upper end opening of the discharge hole is narrowed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an application container. [Background technology]

[0002] Conventionally, there has been known an applicator container which comprises a cylindrical container body with a bottom and a mouth, an inner plug which is attached to the mouth and has a discharge hole formed therein which communicates with the inside of the container body, and an applicator stopper which is inserted into the discharge hole in an upwardly biased state so as to be able to move downward, and the applicator stopper is provided with a cylindrical applicator part with a top which is inserted into the discharge hole and a base which supports the applicator part, and by pressing the top wall of the applicator part against the part to be coated and moving the applicator stopper downward, the content liquid is discharged from the discharge hole and applied to the part to be coated. As an application container, for example, as shown in Patent Document 1 below, a configuration is known in which the amount of content liquid discharged in one application operation is kept to an appropriate amount. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-045152 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional applicator containers described above, the downward end position of the applicator stopper can be changed upward by providing a vertically movable restricting member on the inside stopper that restricts further downward movement of the applicator stopper, or by forming the restricting member integral with the inside stopper and providing the applicator part on the base so that it can move vertically. In the former case, a new restricting member must be installed and the inside stopper must be redesigned, while in the latter case, the design of both the inside stopper and the applicator part must be redesigned. Therefore, there is room for improvement in reducing the number of parts that need to be changed in order to obtain a configuration that keeps the amount of content liquid discharged in one application operation to an appropriate amount.

[0005] The present invention provides an application container that can reduce the number of parts that need to be changed in order to obtain a configuration that keeps the amount of content liquid discharged in one application operation to an appropriate amount. [Means for solving the problem]

[0006] An applicator container according to one aspect of the present invention comprises a bottomed, cylindrical container body having a mouth, an inner plug attached to the mouth and having a discharge hole formed therein that communicates with the inside of the container body, and an applicator stopper inserted into the discharge hole so as to be movable downward while being biased upward, the applicator stopper comprising a topped, cylindrical applicator part inserted into the discharge hole and a base part supporting the applicator part, a flow path through which the content liquid in the container body flows is provided between the outer peripheral surface of the applicator part and the inner peripheral surface of the discharge hole, the base part comprising a plate part whose front and back surfaces face in the vertical direction, and a support protrusion extending upward from the plate part and fitted into the applicator part , and an annular sealing portion is provided on the upper surface of the plate portion which abuts downwardly against the opening periphery of the discharge hole on the inner surface of the middle plug and which blocks communication between the flow passage and the inside of the container body, the support protrusion is provided on a portion of the upper surface of the plate portion which is located radially inward from the annular sealing portion, and a plurality of ribs which protrude radially outward are formed at intervals in the circumferential direction on the outer peripheral surface of the portion of the applicator portion which protrudes upward from the discharge hole, and when the applicator plug moves downward, the ribs abut against or come close to the middle plug and the upper end opening of the discharge hole is narrowed.

[0007] A plurality of ribs projecting radially outward are formed at intervals in the circumferential direction on the outer peripheral surface of the portion of the applicator part that projects upward from the discharge hole, and when the applicator plug moves downward, the ribs come into contact with or come close to the inner plug, narrowing the upper end opening of the discharge hole, thereby limiting the amount of content liquid that can be dispensed in one application operation. This configuration can be obtained simply by replacing the applicator part with one that has ribs, and the number of parts that need to be changed can be reduced to obtain a configuration that limits the amount of content liquid dispensed in one application operation to an appropriate amount.

[0008] The rib may come into contact with the peripheral edge of the opening of the discharge hole on the outer surface of the inside plug when the applicator plug moves downward.

[0009] When the applicator stopper moves downward, the rib abuts against the opening periphery of the discharge hole on the outer surface of the inner plug, thereby restricting further downward movement of the applicator stopper and reliably limiting the amount of liquid content that can be discharged in one application operation.

[0010] A flange portion is formed on the outer peripheral surface of the portion of the application portion that protrudes upward from the discharge hole, protruding radially outward and extending continuously over the entire circumferential length, and the flange portion has a plurality of vertical holes that penetrate in the up and down direction and are formed at intervals in the circumferential direction, and the rib may extend downward from the underside of the flange portion and be spaced circumferentially from the vertical holes.

[0011] A plurality of vertical holes penetrating vertically are formed in the flange portion at intervals in the circumferential direction, and the ribs extend downward from the underside of the flange portion and are spaced apart in the circumferential direction from the vertical holes. As a result, when the application plug moves downward, a portion of the liquid contents flowing out from the portion of the discharge hole located between adjacent ribs in the circumferential direction reaches the underside of the flange portion and then flows along the underside of the flange portion towards the vertical holes, and the liquid contents flowing out from the discharge hole can be supplied to the application portion from the plurality of vertical holes with little bias.

[0012] The rib may enter the discharge hole when the applicator plug moves downward.

[0013] The rib enters the discharge hole when the application plug moves downward, and the resistance force generated between the rib and the inner surface of the discharge hole prevents the application plug from moving downward, thereby preventing impact force from being applied to the applied part and reliably limiting the amount of content liquid that can be discharged in one application operation.

[0014] In a configuration in which the rib enters the discharge hole when the application plug moves downward, a flange portion that protrudes radially outward and extends continuously over the entire circumferential length is formed on the outer peripheral surface of the part of the application part that protrudes upward from the discharge hole, the flange portion abuts against the opening peripheral portion of the discharge hole on the outer surface of the inner plug when the application plug moves downward, a vertical hole that passes through the flange portion in the up-down direction may be formed, and the rib may extend downward from the underside of the flange portion.

[0015] In this case, when the application stopper moves downward, the flange portion abuts against the opening peripheral edge of the discharge hole on the outer surface of the inner stopper, thereby restricting further downward movement of the application stopper and reliably limiting the amount of liquid content that can be discharged in one application operation. A vertical hole is formed in the flange portion, which penetrates in the vertical direction. Therefore, even if the flange portion abuts against the opening peripheral portion of the discharge hole on the outer surface of the inner plug when the application stopper moves downward, the content liquid from the discharge hole can be smoothly supplied to the application part through the vertical hole. [Effects of the Invention]

[0016] According to the above aspect of the present invention, the number of parts that need to be changed can be reduced in order to obtain a configuration that keeps the amount of content liquid discharged in one application operation to an appropriate amount. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 2 is a vertical cross-sectional view of the application container according to the first embodiment. [Figure 2] FIG. 2 is a top view of the application unit of FIG. 1. [Figure 3] FIG. 2 is a bottom view of the application unit of FIG. 1. [Figure 4] FIG. 10 is a vertical cross-sectional view of an application container according to a second embodiment. [Figure 5] FIG. 5 is a bottom view of the application unit of FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the application container 1 according to this embodiment includes a container body 11, an inside plug 12, an application plug 13, and a cap .

[0019] Container body 11 is formed in a bottomed cylindrical shape having a mouth portion 11b and a bottom, and inside stopper 12, applicator stopper 13, and cap 14 are formed in a topped cylindrical shape. Container body 11, inside stopper 12, applicator stopper 13, and cap 14 are arranged coaxially with a common axis O. Hereinafter, the side of the mouth 11b of the container body 11 along the common axis O will be referred to as the upper side, the bottom side of the container body 11 along the common axis O will be referred to as the lower side, and the direction along the common axis O will be referred to as the up-down direction. The direction that intersects with the common axis O when viewed from the up-down direction will be referred to as the radial direction, and the direction that circles around the common axis O when viewed from the up-down direction will be referred to as the circumferential direction.

[0020] A fitting protrusion 11c and a male thread portion 11d are provided from top to bottom on the outer peripheral surface of the mouth portion 11b of the container body 11. The inside plug 12 is attached to the mouth portion 11b by being undercut fitted into the fitting protrusion 11c. A cap 14 is detachably screwed onto the male thread portion 11d. The cap 14 may be removably fitted to the mouth portion 11b, or may be removably attached to the inside plug 12.

[0021] The inside plug 12 is formed in the shape of a cylinder with a top, having a top wall 21 and a peripheral wall 22 . The peripheral wall 22 is undercut fitted onto the fitting projection 11c. The top wall 21 is formed in an annular shape and is disposed coaxially with the common axis O. The top wall 21 rests on the upper opening edge of the mouth portion 11b. An upwardly protruding discharge tube 16 is formed on the inner peripheral edge of the top wall 21. The diameter of the upper portion of the discharge tube 16 is smaller than the diameter of the lower portion. The inside of the upper portion of the discharge tube 16 communicates with the inside of the container body 11 and forms the discharge hole 15 through which the content liquid is discharged. A downwardly protruding seal tube 21b is formed on the inner peripheral edge of the top wall 21 and is fitted liquid-tightly into the mouth portion 11b.

[0022] Applicator plug 13 is inserted into discharge hole 15 in an upwardly biased state so as to be movable downward. Applicator plug 13 includes a cylindrical applicator part 24 with a top inserted into discharge hole 15, and a base part 23 that supports applicator part 24. A flow path X through which the content liquid in container body 11 flows is provided between the outer peripheral surface of applicator part 24 and the inner peripheral surface of discharge hole 15.

[0023] The base 23 includes a plate 25 having its front and back surfaces facing the vertical direction, and a cylindrical support protrusion 26 extending upward from the plate 25. The plate 25 and the support protrusion 26 are arranged coaxially with a common axis O.

[0024] An annular seal 13a is provided on the upper surface of the plate portion 25. The annular seal 13a abuts downward against the opening periphery 12a of the discharge hole 15 on the inner surface of the inside plug 12 in a manner that allows it to be separated downward, thereby blocking communication between the flow path X and the inside of the container body 11. The annular seal 13a is provided on a portion of the upper surface of the plate portion 25 that is located radially outward from the support protrusion 26. The annular seal 13a is provided on the outer periphery of the upper surface of the plate portion 25. The annular seal 13a abuts against the inner surface of a step 16a of the discharge tube 16 that connects the upper and lower portions and extends radially inward as it extends upward. The lower surface of the plate portion 25 is supported by a spring member 27 that urges the applicator plug 13 upward. In the illustrated example, the spring member 27 is formed integrally with the plate portion 25. The spring member 27 extends downward from the outer periphery of the lower surface of the plate portion 25. The lower end of the spring member 27 is engaged with the seal tube 21b of the inside plug 12. The spring member 27 may be a separate member from the plate portion 25.

[0025] The materials forming application portion 24 and base 23 are not particularly limited and may be the same or different materials. For example, it is preferable to form application portion 24 from a material softer than the material forming base 23 by forming base 23 from a hard resin material such as polypropylene and application portion 24 from a relatively soft material such as low-density polyethylene, elastomer, or silicone rubber.

[0026] The applicator part 24 is formed in a cylindrical shape with a top wall and a peripheral wall, and is fitted onto and fixed to the support protrusion 26 of the base part 23. The lower surface of the top wall of the applicator part 24 is supported by the upper end opening edge of the support protrusion 26. As shown in Figures 1 and 2, a plurality of protrusions 17 protruding upward are formed at intervals in the circumferential direction on the top wall of the applicator portion 24. In a vertical cross-sectional view passing through the circumferential center of the protrusions 17 along the radial direction, the inner surface 17a facing inward in the radial direction extends radially outward as it extends upward, and the slope of the inner surface 17a is smaller than the slope of the outer surface 17b facing radially outward. In the vertical cross-sectional view of the protrusions 17, the outer surface 17b of the protrusions 17 extends radially inward as it extends upward. In the vertical cross-sectional view of the protrusions 17, the outer surface 17b of the protrusions 17 may extend straight in the vertical direction. A recess 24c is formed on the upper surface of the top wall of application part 24 in a portion located radially inward from protrusion 17. Recess 24c is disposed coaxially with common axis O. The inner diameter of recess 24c is larger than the inner diameter of the upper end opening of support protrusion 26.

[0027] 1 and 3, a plurality of guide protrusions 24b are provided at intervals in the circumferential direction on the outer peripheral surface of the peripheral wall of applicator part 24. The guide protrusions 24b extend in the vertical direction and abut against or are close to the inner peripheral surface of discharge hole 15. In the example shown, three guide protrusions 24b are arranged at equal intervals in the circumferential direction. Guide protrusions 24b extend upward from the lower edge of the peripheral wall of applicator part 24, and the upper end of guide protrusions 24b is located above discharge hole 15.

[0028] Between the edge of the lower end opening of the peripheral wall of the applicator part 24 and a portion of the upper surface of the plate part 25 located radially inward from the annular seal part 13a, there is provided a vertical gap (hereinafter referred to as storage space Y) that communicates with the flow path X and is capable of storing the content liquid. The storage space Y is connected to the flow path X over the entire radial area of ​​the lower end opening. The storage space Y extends continuously over the entire circumferential length. The storage space Y protrudes radially inward from the flow path X. The storage space Y has the inner peripheral surface of the discharge hole 15 as part of its inner surface.

[0029] A flange portion 32 that protrudes radially outward and extends continuously over the entire circumferential length is formed on the outer peripheral surface of the portion of the applicator portion 24 that protrudes upward from the discharge hole 15. The flange portion 32 is provided at the upper end of the applicator portion 24. The lower surface of the flange portion 32 is flat.

[0030] A vertical hole 32a is formed in the flange portion 32, penetrating it in the up-down direction. The vertical hole 32a is provided across the entire radial area of ​​the flange portion 32. A plurality of vertical holes 32a (four in the illustrated example) are provided at intervals in the circumferential direction. The vertical hole 32a faces the flow passage X in the up-down direction. The vertical hole 32a faces the peripheral edge of the opening of the discharge hole 15 on the outer surface of the inside plug 12 in the up-down direction. The lower end opening of the vertical hole 32a faces the upper end opening of the discharge hole 15 in the up-down direction.

[0031] The inner surface of the vertical hole 32a, which is located at the radially inner end and faces radially outward, extends radially outward as it extends upward. The upper end of the inner end surface of the vertical hole 32a is located at the same radial position as the lower end of the outer surface 17b of the protrusion 17. The lower end of the inner end surface of the vertical hole 32a is vertically continuous with the outer peripheral surface of the peripheral wall of the applicator part 24. The circumferential size of the vertical holes 32a is smaller than the distance between adjacent guide protrusions 24b in the circumferential direction. In the illustrated example, two vertical holes 32a open into one of the three spaces, and one vertical hole 32a opens into each of the remaining two spaces.

[0032] In this embodiment, a plurality of ribs 10a projecting radially outward are formed at intervals in the circumferential direction on the outer peripheral surface of the portion of applicator part 24 that projects upward from discharge hole 15. When applicator plug 13 moves downward, ribs 10a come into contact with or come close to inner plug 12, thereby narrowing the upper end opening of discharge hole 15.

[0033] When the applicator plug 13 moves downward, the rib 10a contacts the opening periphery of the discharge hole 15 on the outer surface of the inside plug 12. The ribs 10a are spaced equally apart in the circumferential direction, at the same intervals as the guide protrusions 24b. The rib 10a extends downward from the lower surface of the flange portion 32 and is connected to the upper end of the guide protrusions 24b. The ribs 10a and the guide protrusions 24b are aligned in the circumferential direction and have the same circumferential size. The ribs 10a and the guide protrusions 24b are spaced apart in the circumferential direction from the vertical hole 32a. The outer peripheral surface of the rib 10a is located radially outward of the guide protrusions 24b and is connected to the outer peripheral surface of the flange portion 32 without any vertical step. The vertical size of the rib 10a is greater than the vertical size of the flange portion 32. The lower surface of the rib 10a is flat.

[0034] The cap 14 is formed in a cylindrical shape with a top and a top wall 28 that covers the applicator plug 13 from above. A female thread 29a is formed on the inner peripheral surface of a peripheral wall 29 of the cap 14. The female thread 29a is threadedly engaged with the male thread 11d of the opening 11b of the container body 11. The cap 14 is provided with a sealing tube 31 extending downward from the top wall portion 28. The sealing tube 31 is provided radially inside the peripheral wall portion 29 and surrounds the applicator plug 13 and the discharge tube 16 from the radial outside. A sealing protrusion is formed on the inner peripheral surface of the sealing tube 31, extending continuously over the entire circumferential length and abutting liquid-tightly against the outer peripheral surface of the upper part of the discharge tube 16. The lower end opening edge of the sealing tube 31 abuts liquid-tightly against the upper surface of the top wall 21 of the inside plug 12. The lower end of the sealing tube 31 is connected to a portion of the inner peripheral surface of the peripheral wall portion 29 of the cap 14 that is located above the female thread portion 29a.

[0035] As described above, according to the applicator container 1 of this embodiment, a plurality of ribs 10a that protrude radially outward are formed at intervals in the circumferential direction on the outer peripheral surface of the portion of the applicator part 24 that protrudes upward from the discharge hole 15, and when the applicator plug 13 moves downward, the ribs 10a come into contact with or come close to the inner plug 12, narrowing the upper end opening of the discharge hole 15, thereby limiting the amount of content liquid that can be dispensed in one application operation. Such a configuration can be obtained simply by replacing the applicator part 24 with one that has ribs 10a, and the number of parts that need to be changed can be reduced to obtain a configuration that limits the amount of content liquid dispensed in one application operation to an appropriate amount.

[0036] When the application plug 13 moves downward, the rib 10a abuts against the opening peripheral edge of the discharge hole 15 on the outer surface of the inner plug 12, thereby restricting further downward movement of the application plug 13, making it possible to reduce the amount of downward movement of the application plug 13 compared to when the rib 10a is not provided, and reliably restricting the amount of content liquid that can be discharged in one application operation.

[0037] A plurality of vertical holes 32a penetrating in the vertical direction are formed in the flange portion 32 at intervals in the circumferential direction, and the ribs 10a extend downward from the underside of the flange portion 32 and are spaced apart in the circumferential direction from the vertical holes 32a. Therefore, when the applicator container 1 is held in an inverted position and the applicator plug 13 is pushed in, a portion of the liquid contents flowing out from the portion of the discharge hole 15 located between the circumferentially adjacent ribs 10a reaches the flange portion 32 and then flows along the flange portion 32 toward the vertical holes 32a, and the liquid contents flowing out from the discharge hole 15 can be supplied to the applied portion from the plurality of vertical holes 32a with little bias.

[0038] Next, an application container 2 according to a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, with only the differences being described.

[0039] In the applicator container 2 of this embodiment, when the applicator plug 13 moves downward, the rib 10b enters the discharge hole 15 and comes into contact with or close to the inside plug 12, thereby narrowing the upper end opening of the discharge hole 15. When the applicator plug 13 moves downward, the lower surface of the flange portion 32 comes into contact with the opening periphery of the discharge hole 15 on the outer surface of the inside plug 12. The radial sizes of the ribs 10b and the guide protrusions 24b are the same. The multiple ribs 10b are provided over the entire circumferential length of each portion of the underside of the flange portion 32 located between adjacent vertical holes 32a in the circumferential direction. The circumferential size of the ribs 10b is larger than the circumferential size of the guide protrusions 24b. Of the multiple ribs 10b, the rib 10b connected to the upper end of the guide protrusion 24b protrudes from the guide protrusion 24b on both sides in the circumferential direction.

[0040] As described above, in the application container 2 of this embodiment, the rib 10b enters the discharge hole 15 when the application plug 13 moves downward, and the resistance force generated between the rib 10b and the inner surface of the discharge hole 15 prevents the application plug 13 from moving downward, thereby preventing impact force from being applied to the application target portion and reliably limiting the amount of content liquid that can be discharged in one application operation.

[0041] When the application plug 13 moves downward, the flange portion 32 abuts against the opening periphery of the discharge hole 15 on the outer surface of the inner plug 12, thereby restricting further downward movement of the application plug 13 and reliably limiting the amount of content liquid that can be discharged in one application operation. A vertical hole 32a is formed in the flange portion 32 so that when the application plug 13 moves downward, even if the flange portion 32 abuts against the opening periphery of the discharge hole 15 on the outer surface of the inner plug 12, the content liquid from the discharge hole 15 can be smoothly supplied to the application part through the vertical hole 32a.

[0042] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0043] For example, the protrusion 17 may not be formed on the top wall of the application part 24 . In the upper surface of the top wall of application part 24, recess 24c may not be formed in the portion positioned radially inward from protrusion 17, and this portion may be made flat. The flange portion 32 of the applicator portion 24 does not necessarily have to have the vertical hole 32a formed therein, and the applicator portion 24 does not necessarily have to have the flange portion 32 formed therein. The guide projections 24b may not be provided on the outer peripheral surface of the peripheral wall of the applicator part 24. The discharge tube 16 does not have to be formed on the top wall 21 of the inside plug 12 .

[0044] In addition, within the scope of the spirit of the present invention, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described embodiments and variations may be combined as appropriate. [Explanation of symbols]

[0045] 1, 2 Application container 10a, 10b Ribs 11 Container body 11b Mouth 12 Inner stopper 13 Application stopper 13a Annular seal 14 Cap 15 Discharge hole 23 Base 24 Application section 25 Board part 26 Support protrusion 32 Flange 32a vertical hole X Distribution path

Claims

1. a cylindrical container body with a bottom and a mouth; an inside plug that is attached to the mouth portion and has a discharge hole that communicates with the inside of the container body; an application plug inserted into the discharge hole in an upwardly biased state so as to be movable downward; The application plug has: a cylindrical applicator part with a top inserted into the discharge hole; a base portion supporting the application portion, a flow path through which the content liquid in the container body flows is provided between an outer peripheral surface of the application part and an inner peripheral surface of the discharge hole, The base portion includes a plate portion having front and back surfaces facing up and down, and a support protrusion extending upward from the plate portion and fitted into the application portion, an annular seal portion is provided on an upper surface of the plate portion and removably contacts downward against an opening peripheral edge portion of the discharge hole on the inner surface of the inside plug, blocking communication between the flow passage and the inside of the container body; the support protrusion is provided on an upper surface of the plate portion at a portion located radially inward of the annular seal portion, a plurality of ribs projecting radially outward are formed at intervals in the circumferential direction on an outer peripheral surface of a portion of the application part that projects upward from the discharge hole, When the applicator plug moves downward, the rib abuts against or comes close to the inner plug, narrowing the upper end opening of the discharge hole.

2. The applicator container according to claim 1 , wherein the rib abuts against an opening periphery of the discharge hole on the outer surface of the inside plug when the applicator plug moves downward.

3. a flange portion that protrudes radially outward and extends continuously over the entire circumferential length of the applicator portion is formed on an outer peripheral surface of a portion of the applicator portion that protrudes upward from the discharge hole; The flange portion has a plurality of vertical holes formed therethrough at intervals in the circumferential direction, The applicator container according to claim 2 , wherein the rib extends downward from a lower surface of the flange portion and is spaced apart from the vertical hole in the circumferential direction.

4. The applicator container according to claim 1 , wherein the rib enters the discharge hole when the applicator plug moves downward.

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