Coating container

Abstract

To suppress large amount of content liquid from being discharged from a discharge hole when an applicator plug is pressed against to-be-coated part, even if internal pressure of the container body rises.SOLUTION: A first engaging portion 32 and a second engaging portion 33 that can be engaged with each other in the vertical direction are separately formed on an applicator plug 13 and a cap 14, at least either the first engaging portion or the second engaging portion is provided in a part of the circumferential direction to move the cap upward with respect to the applicator plug, when the second engaging portion climbs over the first engaging portion, the applicator plug is tilted with respect to an inner plug 12, a part of the annular seal portion 13a in the circumferential direction is separated downward from the opening peripheral edge portion 12a of a discharge hole 15 on the inner surface of the inner plug.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a coating container.

Background Art

[0002] Conventionally, for example, as shown in Patent Document 1 below, a bottomed cylindrical container body having a mouth portion, an inner stopper attached to the mouth portion and having a discharge hole communicating with the inside of the container body, and a coating stopper inserted into the discharge hole so as to be movable downward in an upwardly biased state, and a cap detachably attached to the mouth portion. A flow path through which the content liquid in the container body flows is provided between the outer peripheral surface of the coating stopper and the inner peripheral surface of the discharge hole. The coating stopper is provided with an annular seal portion that is detachably abutted downward against the opening peripheral edge portion of the discharge hole on the inner surface of the inner stopper and blocks the communication between the flow path and the inside of the container body. A coating container is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional coating container, for example, when a content liquid containing a component such as alcohol having a relatively high volatility is stored in the container body, the internal pressure of the container body rises due to the body temperature of the hand holding the container body or the like, and when the coating stopper is pressed against the coated portion, a large amount of the content liquid may be discharged from the discharge hole.

[0005] The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a coating container capable of suppressing the discharge of a large amount of content liquid from the discharge hole when the coating stopper is pressed against the coated portion even when the internal pressure of the container body rises.

Means for Solving the Problems

[0006] The present invention employs the following means to solve the above problems. That is, the coating container of the present invention includes a bottomed cylindrical container body having a mouth portion, a middle plug that is attached to the mouth portion and has a discharge hole formed therein that communicates with the inside of the container body, a coating plug that is inserted into the discharge hole so as to be movable downward in an upwardly biased state, and a cap that is detachably attached to the mouth portion or the middle plug. A flow passage through which the content liquid in the container body flows is provided between the outer peripheral surface of the coating plug and the inner peripheral surface of the discharge hole. The coating plug is provided with an annular seal portion that abuts against the opening peripheral edge portion of the discharge hole on the inner surface of the middle plug so as to be separable downward, and blocks the communication between the flow passage and the inside of the container body. The coating plug and the cap are each formed with a first engaging portion and a second engaging portion that can engage with each other in the vertical direction. At least one of the first engaging portion and the second engaging portion is provided in a part of the circumferential direction. When the cap is moved upward with respect to the coating plug and the second engaging portion overrides the first engaging portion upward, the coating plug tilts with respect to the middle plug, and a part of the circumferential direction of the annular seal portion separates downward from the opening peripheral edge portion of the discharge hole on the inner surface of the middle plug. A vertical groove extending in the vertical direction is formed on the outer peripheral surface of the coating plug. , the application plug includes a base portion and an application portion formed of a softer material than the material forming the base portion. The base portion includes a plate portion having the annular seal portion and a support protrusion extending upward from the plate portion. The application portion is formed in a capped cylindrical shape having a top wall pressed against the portion to be coated and a peripheral wall inserted into the discharge hole and externally fitted and fixed to the support protrusion. The outer peripheral surface of the peripheral wall of the application portion abuts or is close to the inner peripheral surface of the discharge hole, and the longitudinal groove is formed in the outer peripheral surface of the peripheral wall of the application portion. 。

[0007] Since the coating plug and the cap are each formed with a first engaging portion and a second engaging portion that can engage with each other in the vertical direction, and at least one of the first engaging portion and the second engaging portion is provided in a part of the circumferential direction, when the cap is moved upward with respect to the coating plug and the second engaging portion overrides the first engaging portion upward, the coating plug tilts with respect to the middle plug, and a part of the circumferential direction of the annular seal portion separates downward from the opening peripheral edge portion of the discharge hole on the inner surface of the middle plug. Therefore, even if the internal pressure of the container body increases due to the body temperature of the hand holding the container body or the like, when the cap is moved upward with respect to the coating plug, it is possible to communicate the inside of the container body to the outside through the flow passage and reduce the internal pressure of the container body, and when the coating plug is pressed against the coated portion, it is possible to suppress a large amount of content liquid from being discharged from the discharge hole. When moving the cap upward relative to the application plug, by tilting the application plug relative to the middle plug, the inside of the container body is communicated with the outside through the flow path. Therefore, compared with the case where the application plug is simply moved upward relative to the middle plug, the force applied to the cap required for this communication can be kept low.

[0008] The middle plug is formed in a toped cylindrical shape having a top wall in which the discharge hole is formed. The first engaging portion projects radially outward from the outer peripheral surface of the portion of the application plug that projects upward from the discharge hole, and extends continuously over the entire circumferential length. When the application plug moves downward, the first engaging portion may abut against the opening peripheral edge of the discharge hole on the upper surface of the top wall to close the upper end opening of the flow path.

[0009] Since the first engaging portion extends continuously over the entire circumferential length and, when the application plug moves downward, the first engaging portion abuts against the opening peripheral edge of the discharge hole on the upper surface of the top wall to close the upper end opening of the flow path, it is possible to suppress the excessive discharge of the content liquid from the discharge hole during application. When the cap is moved upward relative to the application plug, such a first engaging portion also functions to engage with the second engaging portion of the cap and tilt the application plug relative to the middle plug. Therefore, while preventing the complication of the structure, it is possible to suppress the discharge of a large amount of content liquid from the discharge hole when the application plug is pressed against the portion to be coated.

[0010] The middle plug is formed in a toped cylindrical shape having a top wall in which the discharge hole is formed. The cap is formed in a toped cylindrical shape having a top wall portion that covers the application plug from above, and includes a seal cylinder that extends downward from the top wall portion. The seal cylinder surrounds the application plug and the discharge hole from the outside in the radial direction. The lower end opening edge of the seal cylinder is in liquid-tight contact with the upper surface of the top wall. The second engaging portion may be formed on the inner peripheral surface of the seal cylinder.

[0011] Since the second engaging portion is formed in the sealing cylinder that surrounds the application plug and the discharge hole from the outside in the radial direction and is in liquid-tight contact with the upper surface of the top wall, it is possible to reliably ensure the sealing performance of the upper end opening of the flow passage by the cap while preventing the complication of the structure.

Advantages of the Invention

[0012] According to this invention, even when the internal pressure of the container body rises, when the application plug is pressed against the portion to be coated, it is possible to suppress a large amount of the content liquid from being discharged from the discharge hole.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0014] Hereinafter, with reference to the drawings, one embodiment of the present invention will be described. As shown in FIG. 1, the coating container 1 according to the present embodiment includes a container body 11, a middle plug 12, an application plug 13, and a cap 14.

[0015] The container body 11 is formed in a bottomed cylindrical shape having a mouth portion 11b and a bottom portion. The middle plug 12 and the cap 14 are formed in a toped cylindrical shape, and the application plug 13 is formed in a rod shape. The container body 11, the middle plug 12, the application plug 13, and the cap 14 are arranged coaxially with a common axis O. The side of the mouth portion 11b of the container body 11 along the common axis O is referred to as the upper side, and the bottom side of the container body 11 is referred to as the lower side. The direction along the common axis O is referred to as the vertical direction. When viewed from the vertical direction, the direction intersecting the common axis O is referred to as the radial direction, and the direction of orbiting around the common axis O is referred to as the circumferential direction.

[0016] Examples of the contents accommodated in the container body 11 include a liquid containing components such as alcohol with relatively high volatility. A fitting protrusion 11c and a male screw portion 11d are provided on the outer peripheral surface of the mouth portion 11b of the container body 11 in this order from above downward. The middle plug 12 is undercut-fitted to the fitting protrusion 11c, whereby the middle plug 12 is attached to the mouth portion 11b. The cap 14 is detachably screwed onto the male screw portion 11d. Note that the cap 14 may be detachably fitted to the mouth portion 11b, or the cap 14 may be detachably attached to the middle plug 12.

[0017] The middle plug 12 is formed in a capped cylindrical shape having a top wall 21. A discharge hole 15 communicating with the inside of the container body 11 is formed in the top wall 21. The discharge hole 15 is disposed coaxially with the common axis O. A discharge cylinder 21a protruding upward is formed at the opening peripheral edge of the discharge hole 15 on the upper surface of the top wall 21. The outer peripheral edge portion 21b on the upper surface of the top wall 21 extends continuously over the entire circumferential length and is a flat surface facing upward. The peripheral wall 22 of the middle plug 12 is liquid-tightly fitted into the mouth portion 11b. A fitting cylinder 22a protruding radially outward and undercut-fitted to the fitting protrusion 11c is formed on the outer peripheral surface of the portion of the peripheral wall 22 protruding upward from the mouth portion 11b. The fitting cylinder 22a straddles radially in a state of abutting against the upper end opening edge of the mouth portion 11b.

[0018] The application plug 13 is inserted into the discharge hole 15 so as to be movable downward in an upwardly biased state. A flow passage X through which the content liquid in the container body 11 flows is provided between the outer peripheral surface of the application plug 13 and the inner peripheral surface of the discharge hole 15. The application plug 13 includes a base portion 23 and an application portion 24. Note that the base portion 23 and the application portion 24 may be integrally formed.

[0019] The base portion 23 includes a plate portion 25 whose front and back surfaces face the vertical direction, and a support protrusion 26 extending upward from the plate portion 25. The plate portion 25 and the support protrusion 26 are disposed coaxially with the common axis O.

[0020] The outer peripheral edge portion on the upper surface of the plate portion 25 is detachably and downwardly abutted against the opening peripheral edge portion 12a of the discharge hole 15 on the inner surface of the middle plug 12, serving as an annular seal portion 13a that blocks the communication between the flow passage X and the inside of the container body 11. The lower surface of the plate portion 25 is supported by a spring member 27 that biases the application plug 13 upward. In the illustrated example, the spring member 27 is integrally formed with the plate portion 25. The spring member 27 extends downward from the outer peripheral edge portion on the lower surface of the plate portion 25. The lower end portion of the spring member 27 is locked inside the lower end portion of the peripheral wall 22 of the middle plug 12. Note that the spring member 27 may be separate from the plate portion 25.

[0021] The application portion 24 is formed of a softer material than the material forming the base portion 23. For example, when the base portion 23 is formed of a hard resin material such as polypropylene, the application portion 24 is formed of a relatively soft material such as low-density polyethylene, elastomer, or silicone rubber. The application portion 24 is formed in a roofed cylindrical shape having a top wall and a peripheral wall, and is externally fitted and fixed to the support protrusion 26 of the base portion 23. A vertical gap is provided between the lower surface of the top wall of the application portion 24 and the support protrusion 26, enabling the top wall of the application portion 24 to be elastically deformed in the vertical direction. Thereby, when the top wall of the application portion 24 is pressed against the portion to be coated, the top wall of the application portion 24 can be elastically deformed to give the user a comfortable tactile sensation. Note that it is not necessary to provide a vertical gap between the lower surface of the top wall of the application portion 24 and the support protrusion 26. A plurality of protrusions 24a protruding upward are provided at intervals on the upper surface of the top wall of the application portion 24. The outer peripheral surface of the peripheral wall of the application portion 24 is in contact with or close to the inner peripheral surface of the discharge hole 15. A plurality of vertical grooves 24b extending in the vertical direction are formed at intervals in the circumferential direction on the outer peripheral surface of the peripheral wall of the application portion 24. The vertical grooves 24b open at the lower end opening edge of the peripheral wall of the application portion 24.

[0022] The cap 14 is formed in a roofed cylindrical shape having a ceiling wall portion 28 that covers the application stopper 13 from above. An internal thread portion 29a is formed on the inner peripheral surface of the peripheral wall portion 29 of the cap 14. The internal thread portion 29a is screwed onto the external thread portion 11d of the mouth portion 11b of the container body 11. The cap 14 includes a seal cylinder 31 that extends downward from the ceiling wall portion 28. The seal cylinder 31 is provided inside the peripheral wall portion 29 in the radial direction and surrounds the application stopper 13, the discharge hole 15, and the discharge cylinder 21a from the outside in the radial direction. The lower end opening edge of the seal cylinder 31 is in liquid-tight contact with the outer peripheral edge portion 21b on the upper surface of the top wall 21 of the middle stopper 12.

[0023] In this embodiment, a first engaging portion 32 and a second engaging portion 33 that can engage with each other in the vertical direction are separately formed on the application stopper 13 and the cap 14, and at least one of the first engaging portion 32 and the second engaging portion 33 is provided in a part of the circumferential direction. As a result, as shown in FIG. 3, when the cap 14 is moved upward with respect to the application stopper 13 and the second engaging portion 33 climbs over the first engaging portion 32 upward, the application stopper 13 tilts with respect to the middle stopper 12, and a part of the circumferential direction in the annular seal portion 13a is separated downward from the opening peripheral edge portion 12a of the discharge hole 15 on the inner surface of the middle stopper 12.

[0024] In this embodiment, the first engaging portion 32 projects outward in the radial direction from the outer peripheral surface of the portion of the application stopper 13 that projects upward from the discharge hole 15 and extends continuously over the entire circumferential length. When the application stopper 13 moves downward, the first engaging portion 32 abuts against the opening peripheral edge portion of the discharge hole 15 on the upper surface of the top wall 21 of the middle stopper 12, closing the upper end opening of the flow passage X. In the illustrated example, the first engaging portion 32 abuts against the upper end opening edge of the discharge cylinder 21a when the application stopper 13 moves downward.

[0025] The lower surface of the first engaging portion 32 is a flat surface that continuously extends over the entire circumferential length. The outer diameter of the first engaging portion 32 decreases upward. A radial gap is provided between the outermost peripheral edge portion 32a located at the outermost in the radial direction of the first engaging portion 32 and the inner peripheral surface of the seal cylinder 31 over the entire circumferential length. The first engaging portion 32 is formed at the upper end portion on the outer peripheral surface of the coating portion 24. The lower surface of the first engaging portion 32 covers the upper end opening of the longitudinal groove 24b of the coating portion 24.

[0026] The second engaging portion 33 is formed on the inner peripheral surface of the seal cylinder 31. The second engaging portion 33 is provided on a part of the inner peripheral surface of the seal cylinder 31 in the circumferential direction. The second engaging portion 33 is provided at the lower end portion of the seal cylinder 31. The second engaging portion 33 is in contact with or close to the outer peripheral surface of the discharge cylinder 21a. As shown in FIG. 2, the second engaging portion 33 is formed in a strip shape extending in the circumferential direction. The second engaging portion 33 is spaced downward from and vertically opposed to the lower surface of the first engaging portion 32.

[0027] Note that a configuration may be adopted in which the second engaging portion 33 continuously extends over the entire circumferential length and the first engaging portion 32 is provided on a part of the circumferential direction, or a configuration may be adopted in which both the first engaging portion 32 and the second engaging portion 33 are provided on a part of the circumferential direction.

[0028] As described above, according to the coating container 1 of the present embodiment, the first engaging portion 32 and the second engaging portion 33 that can be engaged with each other in the vertical direction are separately formed on the coating plug 13 and the cap 14. Therefore, even if the internal pressure of the container body 11 increases due to the body temperature of the hand holding the container body 11 or the like, when the cap 14 is moved upward with respect to the coating plug 13, the inside of the container body 11 can be communicated to the outside through the flow passage X, and the internal pressure of the container body 11 can be reduced. When the coating plug 13 is pressed against the coated portion, it is possible to suppress a large amount of the content liquid from being discharged from the discharge hole 15.

[0029] When moving the cap 14 upward with respect to the application stopper 13, by tilting the application stopper 13 with respect to the middle stopper 12, the inside of the container body 11 is communicated to the outside through the flow passage X. Therefore, compared with the case of simply moving the application stopper 13 upward with respect to the middle stopper 12, the force applied to the cap 14 required for this communication can be kept low.

[0030] Here, when the cap 14 is attached to the mouth portion 11b, the second engaging portion 33 engages with the first engaging portion 32, so that the application stopper 13 is pushed down with respect to the middle stopper 12. Even if the annular seal portion 13a moves downward from the opening peripheral edge portion 12a of the discharge hole 15 on the inner surface of the middle stopper 12, for example, after the first engaging portion 32 abuts against the upper end opening edge of the discharge cylinder 21a and the cap 14 is further lowered, the second engaging portion 33 gets over the first engaging portion 32 downward, and the application stopper 13 rises due to the restoring force of the spring member 27, and the annular seal portion 13a abuts against the opening peripheral edge portion 12a of the discharge hole 15 on the inner surface of the middle stopper 12.

[0031] The first engaging portion 32 extends continuously over the entire circumferential length. When the application stopper 13 moves downward, the first engaging portion 32 abuts against the opening peripheral edge portion of the discharge hole 15 on the upper surface of the top wall 21, closing the upper end opening of the flow passage X. Therefore, it is possible to suppress the excessive discharge of the content liquid from the discharge hole 15 during application. When the cap 14 is moved upward with respect to the application stopper 13, such a first engaging portion 32 engages with the second engaging portion 33 of the cap 14 and also has the function of tilting the application stopper 13 with respect to the middle stopper 12. Therefore, while preventing the complication of the structure, when the application stopper 13 is pressed against the portion to be coated, it is possible to suppress the discharge of a large amount of content liquid from the discharge hole 15.

[0032] Since the second engaging portion 33 is formed on the seal cylinder 31 that surrounds the application stopper 13 and the discharge hole 15 from the outside in the radial direction and abuts against the upper surface of the top wall 21 in a liquid-tight manner, while preventing the complication of the structure, the sealing performance of the upper end opening of the flow passage X by the cap 14 can be surely ensured.

[0033] Note that the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0034] For example, the protrusion 24a may not be provided on the upper surface of the top wall of the coating portion 24, and the vertical groove 24b may not be formed on the outer peripheral surface of the peripheral wall of the coating portion 24. The discharge cylinder 21a may not be formed on the top wall 21 of the middle plug 12.

[0035] In addition, within the scope not departing from the spirit of the present invention, the components in the above-described embodiments can be appropriately replaced with well-known components, and the above-described embodiments and modified examples can also be appropriately combined.

Explanation of Reference Numerals

[0036] 1 Coating container 11 Container body 11b Mouth part 12 Middle plug 13 Coating plug 13a Annular seal part 14 Cap 15 Discharge hole 21 Top wall 28 Top wall part 31 Seal cylinder 32 First engaging part 33 Second engaging part X Flow path

Claims

1. A bottomed cylindrical container body having a mouth, A middle plug that is attached to the mouth and has a discharge hole formed therein that communicates with the inside of the container body, An application plug inserted into the discharge hole so as to be movable downward in an upwardly biased state, A cap detachably attached to the mouth or the middle plug, and comprising: A flow passage through which the content liquid in the container body flows is provided between the outer peripheral surface of the application plug and the inner peripheral surface of the discharge hole, The application plug is provided with an annular seal portion that abuts against the opening peripheral edge portion of the discharge hole on the inner surface of the middle plug so as to be separable downward, and blocks the communication between the flow passage and the inside of the container body, The application plug and the cap are each separately formed with a first engaging portion and a second engaging portion that can engage with each other in the vertical direction, At least one of the first engaging portion and the second engaging portion is provided in a part of the circumferential direction, When the cap is moved upward relative to the application plug and the second engaging portion overrides the first engaging portion upward, the application plug tilts with respect to the middle plug, and a part of the circumferential direction in the annular seal portion moves downward away from the opening peripheral edge portion of the discharge hole on the inner surface of the middle plug, A vertical groove extending in the vertical direction is formed on the outer peripheral surface of the application plug, The application plug includes a base portion and an application portion formed of a soft material softer than the material forming the base portion, The base portion includes a plate portion having the annular seal portion and a support protrusion extending upward from the plate portion, The application portion is formed in a toped cylindrical shape having a top wall pressed against the portion to be coated and a peripheral wall inserted into the discharge hole and externally fitted and fixed to the support protrusion, An application container, wherein the outer peripheral surface of the peripheral wall of the application portion abuts or is close to the inner peripheral surface of the discharge hole, and the vertical groove is formed on the outer peripheral surface of the peripheral wall of the application portion.

2. The middle plug is formed in a toped cylindrical shape having a top wall in which the discharge hole is formed, The first engaging portion protrudes radially outward from the outer peripheral surface of the portion of the application plug that protrudes upward from the discharge hole, and continuously extends over the entire circumferential length, The coating container according to claim 1, wherein when the application plug moves downward, the first engaging portion abuts against the opening peripheral edge portion of the discharge hole on the upper surface of the top wall, and closes the upper end opening of the flow passage.

3. The middle plug is formed in a toped cylindrical shape having a top wall in which the discharge hole is formed, The cap is formed in a toped cylindrical shape having a top wall portion that covers the application plug from above, and includes a seal cylinder that extends downward from the top wall portion. The seal cylinder surrounds the application plug and the discharge hole from the outside in the radial direction. The lower end opening edge of the seal cylinder is in liquid-tight contact with the upper surface of the top wall. The second engaging portion is formed on the inner peripheral surface of the seal cylinder. The application container according to claim 1 or 2.

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