JP2010036911A - Coating container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating container for easily equalizing the pressure in the container to the outside air pressure, and preventing a content of a larger amount than intended from jetting out on a surface to be coated. <P>SOLUTION: The coating container 1 includes a distribution cylinder 3 communicated with the inside of the container, a coating plug 4 which is arranged in the distribution cylinder 3 in an urged state toward the outer side of the container 2 along the direction of the axis O with its fore end 41 being projected from the distribution cylinder 3, and an over-cap 5 for covering the distribution cylinder 3 and the fore end 41, and a seal surface 44 abutted on a surface 34 to be sealed formed in the distribution cylinder 3 from the inner side of the container 2 along the direction of the axis O is formed on the coating plug 4. At least a part of a section in which the surface 34 to be sealed of the distribution cylinder 3 is located is formed thinner-walled in an elastically deformable thin-walled part 35a. A first projection 35b is projected on an outer surface of the thin-walled part 35a outwardly in the radial direction, and a second projection 53a abutted on the first projection 35b when detaching the over-cap 5 from a mouth part is projected on an inner peripheral surface of the over-cap 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an application container suitable for applying an appropriate amount of contents such as a liquid agent.

As an application container for applying an appropriate amount of contents such as a liquid agent contained in a container, for example, the one described in Patent Document 1 is known. The application container described in Patent Document 1 is an inner stopper (circulation tube) attached to the mouth of the container, and is urged toward the outer side of the container along the axial direction on the inner side in the radial direction of the inner stopper. And a projection (coating plug) having a distal end projecting from the inner plug to the outside of the container. Further, the inside and outside of the container are hermetically sealed because the sealing surface of the outer peripheral surface of the projection biased to the outside of the container and the sealed surface of the inner peripheral surface of the inner plug are in close contact with each other. .
When applying the contents, tilt the container so that the tip of the protrusion faces downward, press the tip against the surface to be coated, push the protrusion against the inner plug, and release the seal. Thus, the flowed contents are applied to the surface to be applied.
Utility Model Registration No. 2553493

  By the way, in the application container described in Patent Document 1, for example, contents such as a liquid agent having a relatively high volatility may be accommodated in the container, or the container may be exposed to a high outside air temperature. It may be in a state of being increased with respect to the pressure outside the container. In this way, when the above-mentioned application is performed in a state where the internal pressure of the container is increased with respect to the external air pressure, when the seal is released, the content to be applied is larger than intended by the pressure difference inside and outside the container. There was a case that erupted.

  The present invention has been made in view of such circumstances, and can easily make the pressure in the container equal to the external pressure, and the contents can be ejected to the coated surface more than intended. The object is to provide a coating container that can be prevented.

In order to achieve the above object, the present invention proposes the following means.
That is, the present invention includes a container in which contents are stored, a flow tube that is attached to a mouth portion of the container and communicates with the inside of the container, and a radial inner side of the flow tube along the axial direction thereof. An applicator stopper that is disposed in a state of being biased toward the outside of the container and has a tip projecting from the flow tube to the outside of the container; An overcap covering the flow tube and the tip of the coating plug, and a portion of the coating plug located in the flow tube along the axial direction on a surface to be sealed formed in the flow tube. An application container having a sealing surface abutting from the inside of the container, wherein at least a part of a portion where the surface to be sealed is located in the flow cylinder is thinner than others and elastically deformable. The thin portion and the thin portion A first protrusion protrudes radially outward from the outer surface of the portion, and a first protrusion that contacts the first protrusion when the overcap is removed from the mouth portion on the inner peripheral surface of the overcap. Two protrusions are provided to project.

  According to the application container of the present invention, the second protrusion is provided on the inner peripheral surface of the overcap so as to come into contact (pressure contact) with the first protrusion of the flow tube when the overcap is removed from the mouth of the container. Therefore, when opening the overcap, the overcap moves to the outside of the container with respect to the flow tube, and the second projection gets over the first projection while the first projection and the second projection are in sliding contact with each other. Two protrusions push the first protrusion toward the radially inner side, and the thin portion is elastically deformed toward the radially inner side. Along with this, a portion of the sealed surface located in the thin portion (hereinafter referred to as a thin portion forming portion) is deformed, and the sealing performance between the sealed surface and the sealing surface is lowered.

  Thereby, when the internal pressure of the container is increased, the internal pressure can be released from between the sealed surface and the seal surface, and the internal pressure of the container can be made equal to the external pressure. Therefore, after removing the overcap, when the container is tilted so that the tip of the coating plug faces downward, the tip of the coating plug is pressed against the coated surface and pushed into the flow tube, and the seal is released. Due to the difference between the external pressure and the internal pressure of the container, the contents are prevented from being ejected onto the surface to be coated more than intended.

  Further, in the coating container according to the present invention, the surface to be sealed is gradually reduced in diameter as it goes to the outside of the container along the axial direction, and the container of the container along the axial direction of the first protrusion is The outer end portion may be disposed on the outer surface of the thin portion at a position corresponding to the inner end portion of the container along the axial direction of the sealed surface.

  In this case, when the first protrusion is pushed inward in the radial direction by the second protrusion as described above, the thin portion forming portion can be displaced in the radial direction, and the surface to be sealed And the sealing performance between the sealing surfaces can be reliably reduced.

In the coating container according to the present invention, the first protrusion and the second protrusion may be formed in a curved shape.
In this case, since the second protrusion smoothly moves over the first protrusion, resistance when the overcap is attached to and detached from the mouth of the container is reduced.

  According to the application container according to the present invention, the pressure inside the container can be easily made equal to the external pressure simply by removing the overcap, and the contents are prevented from being ejected to the surface to be applied more than intended. Can do.

  FIG. 1 is a schematic sectional side view showing a state where an overcap is attached to the mouth of a container in an application container according to an embodiment of the present invention, and FIG. 2 is a view of the upper end portion of the flow tube of FIG. FIG. 3 is a schematic side sectional view for explaining the process of removing the overcap of FIG. 1 from the mouth of the container.

  As shown in FIG. 1, the application container 1 of the present embodiment includes a bottomed cylindrical container 2, a distribution cylinder 3, a rod-shaped application stopper 4, and an overcap 5, each having a common central axis. It is disposed on the shaft. Hereinafter, this common axis is simply referred to as the axis O, and the overcap 5 side is referred to as the upper side and the container 2 side is referred to as the lower side along the axis O direction. And the application | coating container 1 is equipped with the container 2 in which the contents, such as a liquid agent, are accommodated, the distribution | circulation pipe | tube 3 with which the inside is connected in the container 2, and the radial direction inner side of the distribution | circulation cylinder 3 A distribution plug that is disposed in a state of being biased upward and has a distal end portion 41 that will be described later project upward from the flow tube 3 and a mouth of the container 2 are detachably mounted. 3 and an overcap 5 that covers the tip 41 of the coating plug 4.

A male screw 2 a is formed on the outer peripheral surface of the mouth of the container 2.
A flange portion 31 is formed in the central portion of the outer peripheral surface of the flow tube 3 in the direction of the axis O so as to form an annular shape along the circumferential direction and project outward in the radial direction. The outer diameter of the flange portion 31 is equal to the outer diameter of the mouth portion of the container 2. Moreover, the part located below the flange part 31 in the distribution | circulation cylinder 3 is set so that the outer diameter is equal to or slightly larger than the inner diameter of the mouth part of the container 2, and is fitted to the mouth part. In addition, a first engaging portion 32 that is annular in the circumferential direction and protrudes radially inward is formed at the lower end portion of the inner peripheral surface of the flow tube 3. Further, the lower surface of the flange portion 31 is in close contact with the upper end surface of the mouth portion of the container 2.

  Further, the upper portion of the flow tube 3 located on the upper side of the flange portion 31 is gradually reduced in diameter from the lower side toward the upper side. Further, a tapered surface 33 is formed on the outer peripheral surface of the upper end portion of the upper portion, and the upper end portion of the outer peripheral surface of the upper portion is more per unit length along the axis O direction than the other portions. The amount of deformation in the radial direction is increased. Further, a sealed surface 34 that gradually decreases in diameter from the lower side to the upper side is formed on the inner peripheral surface of the upper end portion of the flow tube 3.

  Further, as shown in FIG. 2, a circular recess 35 that is recessed radially inward is formed on the outer peripheral surface of the upper portion of the flow tube 3. Further, the thickness of the bottom wall portion (thin wall portion) 35a of the circular recess 35 is formed thinner than the thickness of the other portion of the flow tube 3 other than the circular recess 35, and is elastically deformable. Yes. In addition, a first projection 35b is provided at the central portion of the outer surface of the bottom wall portion 35a so as to protrude outward in the radial direction and whose top portion is formed in a convex curved shape. The distance in the radial direction between the top of the first protrusion 35b and the axis O is set to be slightly smaller than the inner radius of a small-diameter portion 53 described later of the overcap 5.

As shown in FIG. 1, the upper end portion of the first protrusion 35b is disposed at a position corresponding to the lower end portion of the sealed surface 34 in the bottom wall portion 35a.
Further, in the sealed surface 34, the portion where the bottom wall portion 35a is located is hereinafter referred to as a thin portion forming portion 34a.

  The application plug 4 has a substantially multi-stage cylindrical shape, and includes an upper small diameter portion and a lower large diameter portion. Further, the tip 41 of the small diameter portion protrudes upward from the upper end surface of the flow tube 3. In addition, a plurality of grooves 41 a extending along the axis O direction are formed on the outer peripheral surface of the tip end portion 41 at intervals in the circumferential direction.

  Further, the large-diameter portion of the coating plug 4 has a substantially crested cylindrical shape and is disposed in the distribution cylinder 3. In the large diameter portion, the outer peripheral edge portion of the top wall portion 41c connected to the small diameter portion gradually increases in diameter from the upper side to the lower side in the axis O direction, and the sealed surface 34 formed in the flow tube 3. A seal surface 44 is formed in contact with the lower side.

In the present embodiment, an elastic member 42 that urges the coating plug 4 upward toward the lower side of the coating plug 4, and a cylinder portion 43 fitted in the lower end opening of the distribution cylinder 3 are located from the upper side to the lower side. It is arranged in this order toward the side. The elastic member 42 and the cylindrical portion 43 are formed integrally with the coating plug 4.
The elastic member 42 is made of a resin spring spirally formed around the axis O, and has an upper end connected to the lower end edge of the coating plug 4 and a lower end connected to the upper end edge of the cylinder portion 43. .

  Further, on the outer peripheral surface of the cylindrical portion 43, a second engaging portion 43 a that is formed in an annular shape extending in the circumferential direction and is recessed inward in the radial direction and that engages with the first engaging portion 32 of the flow tube 3 is formed. Yes. As the first engagement portion 32 is engaged with the second engagement portion 43 a in this way, the movement of the tube portion 43 in the direction of the axis O with respect to the flow tube 3 is restricted, and the tube portion 43 is connected. The formed elastic member 42 surely biases the coating plug 4 upward.

  Further, the overcap 5 has a crested cylindrical shape, and includes a multistage cylindrical main body 51 and a top wall 52 that closes the upper side of the main body 51. An annular pressing surface 51 a is formed in the central portion of the inner peripheral surface of the main body 51 in the axis O direction so as to face the upper surface of the flange portion 31 of the flow tube 3. A portion of the main body 51 positioned above the pressing surface 51a is a small-diameter portion 53 that is smaller in diameter than a portion positioned below the pressing surface 51a. In addition, a portion of the main body 51 positioned below the pressing surface 51 a is a large diameter portion 54.

  On the inner circumferential surface of the small-diameter portion 53, an annular second protrusion 53a is provided that extends along the circumferential direction (entire circumference) and projects radially inward. The top of the radially inner edge of the second protrusion 53a is formed in a curved surface shape. Further, the radial distance between the top and the axis O is set slightly smaller than the radial distance between the top of the first protrusion 35b and the axis O. As shown in FIG. 1, the second protrusion 53 a faces the first protrusion 35 b from the lower side with the overcap 5 attached to the mouth of the container 2.

  A female screw 51 b that is screwed into the male screw 2 a of the container 2 is formed on the inner peripheral surface of the large-diameter portion 54. Then, by turning the overcap 5 around the axis O, the screwing of the male screw 2a and the female screw 51b is tightened or loosened, and the overcap 5 moves along the direction of the axis O. The mouth is detachable.

  In addition, a cylindrical wall portion 52 a that covers the distal end portion 41 of the coating plug 4 from the outside in the radial direction is suspended from the top wall portion 52. In addition, an annular step portion 52b is formed in the center portion of the wall portion 52a in the axis O direction so as to face the lower end and contact the upper end opening edge of the flow tube 3. Further, the portion located on the lower side of the step portion 52b on the inner peripheral surface of the wall portion 52a is connected to the radially outer edge portion of the step portion 52b, and gradually increases in diameter from the upper side to the lower side, and the distribution cylinder. A tapered surface 52 c is formed in close contact with the third tapered surface 33.

  Further, with the above-described configuration, the inside of the container 2, the inside of the cylindrical portion 43, the radially inner side of the elastic member 42, and the radially outer side of the elastic member 42 communicate with each other.

Next, application of contents using the application container 1 configured as described above will be described.
First, as shown in FIG. 1, in the process of turning the overcap 5 around the axis O and removing it from the mouth in a state where the overcap 5 is attached to the mouth of the container 2, 3 moves upward. As shown in FIG. 3, the pressing surface 51 a of the overcap 5 and the upper surface of the flange portion 31, the tapered surface 52 c and the tapered surface 33, the lower surface of the stepped portion 52 b, and the upper end opening edge of the flow tube 3 are respectively axis O. By separating in the direction, the radially inner side of the wall portion 52a communicates with the outside of the container 2.

  Further, the second protrusion 53a of the overcap 5 gradually approaches and comes into contact with the first protrusion 35b as the overcap 5 moves upward with respect to the flow tube 3, and then the second protrusion 53a and the first protrusion 53a The second protrusion 53a rides on the first protrusion 35b while being in sliding contact with the protrusion 35b.

  As shown in FIG. 3, when the second protrusion 53a gets over the first protrusion 35b, the second protrusion 53a pushes the first protrusion 35b inward in the radial direction, and the bottom wall portion 35a inward in the radial direction. It is elastically deformed toward. Along with this, the thin portion forming portion 34a of the sealed surface 34 is deformed, and the sealing performance of this portion is lowered. For example, the thin-walled portion forming portion 34a is displaced so as to rotate outwardly in the radial direction around the lower end portion thereof, so that the thin-walled portion-forming portion 34a is swayed with respect to the seal surface 44 to be thin-walled. The sealing performance between the part forming portion 34a and the sealing surface 44 is reduced. Further, depending on the relationship between the urging force of the elastic member 42 urging the coating plug 4 upward and the pushing amount of the second protrusion 53a, while maintaining the sealing performance between the thin portion forming portion 34a and the sealing surface 44, In some cases, the sealing performance between the surface to be sealed 34 other than the thin-walled portion forming portion 34a and the sealing surface 44 may be lowered.

  At this time, when the pressure in the container 2 is higher than the pressure outside the container 2 (external pressure), the thin-walled portion forming portion 34a and the seal surface 44 are brought into point contact or surface contact, for example, from surface contact by the pressure difference. Line contact is made to create a gap between them. Thereby, the inside of the container 2, the inside of the distribution cylinder 3, the inside of the overcap 5, and the outside of the container 2 are communicated, and the pressure inside the container 2 is released to the outside of the container 2.

  In the process of further removing the overcap 5 from the mouth of the container 2 from this state, the second protrusion 53a moves to the upper side of the first protrusion 35b while the first protrusion 35b and the second protrusion 53a are in sliding contact with each other. As shown in FIG. 1, the elastic deformation of the bottom wall portion 35a returns to the original state, and the thin portion forming portion 34a and the sealing surface 44 are sealed again.

  Thereafter, after removing the overcap 5 from the mouth of the container 2, the container 2 is tilted so that the tip 41 of the coating plug 4 faces downward, and the tip 41 is pressed against the surface to be coated and pushed into the flow tube 3. Then, the seal between the sealing surface 44 and the surface to be sealed 34 is released, and the content is flowed out from the groove 41a of the coating plug 4 and applied.

Further, in the process of attaching the overcap 5 to the mouth of the container 2 after the application is finished, the overcap 5 is attached to the mouth of the container 2 in the reverse order as described above.
When the overcap 5 is attached to the mouth portion of the container 2, as shown in FIG. 1, the holding surface 51a of the overcap 5 and the upper surface of the flange portion 31, the tapered surface 52c and the tapered surface 33, and the lower surface of the stepped portion 52b are distributed. Since the upper end opening edge of the cylinder 3 is in close contact with each other, the radially inner side of the wall 52a and the outside of the container 2 are blocked.

  As described above, according to the application container 1 of the present embodiment, when the overcap 5 is removed from the mouth of the container 2 on the inner peripheral surface of the small diameter portion 53 of the overcap 5, Since the second protrusion 53a is provided in contact with the first protrusion 35b, when the overcap 5 is opened, the overcap 5 moves upward with respect to the flow tube 3, and the first protrusion 35b and the second protrusion 53a slide. When the second protrusion 53a gets over the first protrusion 35b while making contact, the second protrusion 53a pushes the first protrusion 35b inward in the radial direction, and the bottom wall portion 35a is elastically deformed inward in the radial direction. Accordingly, the thin portion forming portion 34a located on the bottom wall portion 35a of the sealed surface 34 is deformed, and the sealing performance between the sealed surface 34 and the sealing surface 44 is lowered. Thereby, when the internal pressure of the container 2 is increased, the internal pressure can be released from between the sealed surface 34 and the seal surface 44, and the internal pressure of the container 2 can be made equal to the external pressure. it can.

  Therefore, after removing the overcap 5, the container 2 is tilted so that the tip 41 of the coating plug 4 faces downward, the tip 41 of the coating plug 4 is pressed against the surface to be coated and pushed into the flow tube 3, When the seal is released, the content is prevented from being ejected onto the surface to be coated in a larger amount than intended due to the difference between the external pressure and the internal pressure of the container 2. Therefore, application can be performed with high accuracy from the beginning of use.

  The sealed surface 34 is gradually reduced in diameter toward the upper side, and the upper end portion of the first protrusion 35b corresponds to the lower end of the sealed surface 34 on the outer surface of the bottom wall portion 35a. Therefore, when the first protrusion 35b is pushed inward in the radial direction by the second protrusion 53a, the thin portion forming portion 34a can be displaced so as to rotate in the radial direction. Thus, the sealing performance between the sealed surface 34 and the sealing surface 44 can be reliably reduced.

  Further, since the first protrusion 35b and the second protrusion 53a are formed in a curved shape, and the second protrusion 53a smoothly gets over the first protrusion 35b, when the overcap 5 is attached to and detached from the mouth of the container 2 Resistance is reduced.

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.
For example, in the present embodiment, the first protrusion 35b and the second protrusion 53a are described as being formed in a curved shape, but the present invention is not limited to this.

  In the present embodiment, it has been described that the second protrusion 53a faces the first protrusion 35b from the lower side in a state where the overcap 5 is attached to the mouth portion of the container 2, but the second protrusion 53a has been described. May be in contact with the first protrusion 35b from below.

  Further, in the present embodiment, the sealed surface 34 is gradually reduced in diameter toward the upper side, and the upper end portion of the first protrusion 35b is the lower end of the sealed surface 34 on the outer surface of the bottom wall portion 35a. However, the present invention is not limited to this. That is, when the second protrusion 53a gets over the first protrusion 35b, the second protrusion 53a may push the first protrusion 35b radially inward and the bottom wall 35a may be elastically deformed radially inward. For example, the upper end portion of the first protrusion 35b may be provided at a position corresponding to the sealed surface 34 on the outer surface of the bottom wall portion 35a, or may be provided at a position corresponding to the upper side of the sealed surface 34. Absent.

Further, a plurality of first protrusions 35b may be provided on the outer peripheral surface of the flow tube 3 at intervals in the circumferential direction. That is, a thin portion is formed over the entire circumference of the flow tube 3, or a plurality of thin portions are formed at intervals in the circumferential direction of the flow tube 3. It is also possible to arrange 35b. Further, the first protrusions 35b may be arranged with their positions shifted in the direction of the axis O.
In addition, when the thin portion is formed over the entire circumference in the circumferential direction of the flow tube 3, an annular first protrusion extending along the circumferential direction can be provided on the outer surface of the thin portion. In this case, one or a plurality of second protrusions protruding radially inward may be provided on the inner peripheral surface of the overcap 5 in the circumferential direction.

  In the present embodiment, the circular recess 35 is formed on the outer peripheral surface of the flow tube 3 and the first protrusion 35b is provided on the outer surface of the bottom wall portion 35a of the circular recess 35. However, the first protrusion 35b is provided. The shape of the portion to be formed is not limited to this embodiment. That is, for example, instead of the bottom wall portion 35a, an annular recess portion extending in the circumferential direction is formed on the outer peripheral surface of the flow tube 3, and this portion is formed as a thin portion that can be elastically deformed. It is good also as providing the 1st protrusion 35b which protrudes toward a direction outer side. Moreover, the thin protrusion part which can be elastically deformed other than that may be formed, and the 1st protrusion 35b may be provided in this thin part.

  In addition, in the range which does not deviate from the main point of this invention, it is possible to replace suitably the component in above-mentioned embodiment with a well-known component, and you may combine the above-mentioned modification suitably.

It is a schematic sectional side view which shows the state which mounted the overcap in the opening part of the container in the application container which concerns on one Embodiment of this invention. It is the general | schematic partial side view which looked at the upper end part of the distribution | circulation cylinder of FIG. 1 from the arrow A direction. It is a schematic sectional side view explaining the process which removes the overcap of FIG. 1 from the opening part of a container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Application container 2 Container 3 Flow pipe 4 Application stopper 5 Overcap 34 Sealed surface 35a Bottom wall part (thin wall part)
35b First projection 41 Tip 44 Seal surface 53a Second projection O Flow tube axis

Claims (3)

A container for storing the contents;
A distribution cylinder attached to the mouth of the container, the inside of which is in communication with the container;
An applicator plug disposed on the radially inner side of the flow tube in a state of being urged toward the outside of the container along the axial direction thereof, and having a tip projecting from the flow tube to the outside of the container; ,
An overcap that is detachably attached to the mouth of the container and covers the flow tube and the tip of the coating plug,
A coating container in which a sealing surface that is in contact with the surface to be sealed formed in the flow tube along the axial direction from the inside of the container is formed in a portion of the coating plug that is located in the flow tube. ,
In the flow tube, at least a part of a portion where the surface to be sealed is located is formed to be thinner than others and elastically deformable, and an outer surface of the thin part is radially outward. A first protrusion is projecting toward the
An application container, wherein a second protrusion that abuts on the first protrusion when the overcap is removed from the mouth is provided on the inner peripheral surface of the overcap. The application container according to claim 1,
The sealed surface is gradually reduced in diameter toward the outside of the container along the axial direction,
The outer end of the container along the axial direction of the first protrusion is at a position corresponding to the inner end of the container along the axial direction of the sealed surface on the outer surface of the thin portion. An application container characterized by being arranged. The application container according to claim 1 or 2,
The coating container, wherein the first protrusion and the second protrusion are formed in a curved shape.

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