JPH072269A - Over-cap of container - Google Patents

Abstract

PURPOSE:To stack containers without slippage even when the containers are of neck-in type whose mouths are smaller in diameter than barrels and attach an over-cap, which is inserted in the mouth of the container lightly when the container is in packaged state and deeply when it is in unpacked state, to the mouth of the container in packaging process without a mistake. CONSTITUTION:Even when the diameter of a mouth of a container A is smaller than that of a barrel, a recessed part 8 of an over-cap 1 is positioned above an upper connector 7 so that the container A can be fitted in the recessed part 8 of the over-cap 1. A downward protrusion 10 is provided near the circumference of the underside of the recessed part 8. In packaging process, when the lower part of the over-cap 1 on the tilt is hanged on the mouth of the container A, the protrusion 10 prevents the mouth of the container A from being fitted in the upper connector 7 of the over-cap 1, so that mis-attaching the over-cap 1 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an overcap adapted to be attached to a container sealed with a lid.

[0002]

2. Description of the Related Art For example, as shown in FIG. 6, a cup-shaped container for packaging sake is obtained by caulking a metal plate lid B'on an annular projection A1 'formed on the outer peripheral surface of a mouth. The lid B'is protected and a synthetic resin overcap 1'that closes the mouth after opening is fitted on the lid B '.

In this case, considering that the lid B'has a large thickness, upper and lower two-stage engagements are made on a portion of the inner surface of the peripheral wall 2'of the overcap 1'below the top plate portion 3 '. By forming the projections 4'and 5 ', the lower engaging portion 6'and the upper engaging portion 7'are provided, and in the packaged state in which the lid B'is fitted, the lower engaging portion 6'is attached to the container A. The upper engagement portion 7'is fitted to the annular projection A1 'in the container A'and opened.
Of the overcap 1'in both the packaged state and the unsealed state.
Can be attached exactly to the mouth of the container A '.

Also, the top plate portion 3'of the overcap 1 '.
By forming a recess 8'in which the bottom portion A2 'of the container A'is fitted, the container A'in the packaged state can be stably stacked. The lid B'is
The photographed piece B1 'is pulled in the circumferential direction and the peripheral wall portion B2' is torn to open the piece.

On the other hand, in the packaging step, first, the container A'is filled with the contents C, and then the lid B'is caulked at the mouth portion, and then the container A'is transferred as shown in FIG. In the road, the overcap 1'is tilted and fed out from above by the chute of the parts feeder, and the lower end portion of the overcap 1'in this tilted posture is taken at the mouth of the container A'which has been transferred. By hooking, the overcap 1 ′ is separated from the chute of the parts feeder, and then the overcap 1 ′ is pressed from above as shown by the one-dot chain line in FIG.
The lower engaging portion 6'is adapted to engage with the annular projection A1 'of the container A'.

In this case, since the distance between the upper engaging portion 6'of the overcap 1'and the outer peripheral surface of the recess 8'is small, when the overcap 1'is hooked at the mouth of the container A, The mouth portion of ′ does not fit into the upper engaging portion 7 ′, and therefore, when the overcap 1 ′ separated from the parts feeder is pressed from above, the overcap 1 ′ causes the lower engaging portion 6 ′ to be pressed. The container A ′ is mounted on the container A ′ in a predetermined posture fitted to the annular protrusion 10.

[0007]

By the way, as a lid B for a cup-shaped container of this type, as shown in FIG. 8, cuts B2 are formed in the outer peripheral portion at appropriate intervals, and a pull tab B is formed.
There is one in which the container 1 is opened by raising it, and in this case, it is desirable to make the mouth of the container as small as possible from the viewpoints of reliable sealing and easy opening. Therefore, in the case of this type of lid B, a container A of a type called a neck-in in which the diameter of the mouth portion is smaller than the diameter of the body portion is often used.

In such a neck-in type container A, the ratio of the diameter of the bottom portion A2 of the container A to the outer diameter of the overcap 1'is larger than that of a simple cup-shaped container A'as shown in FIG. Since it becomes large, it is impossible to form the recess 8'as shown in FIG. 6 up to the position of the upper engaging portion 7 '. If the diameter of the bottom portion A2 of the container A is reduced, not only the stability of the container A is deteriorated but also the molding die must be changed, which increases the cost.

Regarding this point, as shown in FIG. 9, if the recess 8'in the top plate 3'is located above the upper engaging portion 7 ', the diameter of the recess 8'can be freely set. As a result, the containers A can be stacked in a state in which they do not shift without damaging the fitting function of the upper engaging portion 7 '. However, when the recess 8'is positioned above the upper engaging portion 7'in this way, the inside of the upper engaging portion 7'is largely opened, so that it is extended in an inclined posture in the packaging process. When the lower end of the overcap 1'is hooked at the mouth of the container A, as shown in FIG.
As shown in 0, the mouth of the container A fits into the upper engaging portion 7'of the overcap 1 ', and the overcap 1 cannot be attached to the container A in a predetermined posture. There was a problem saying that.

It is an object of the present invention to provide an overcap which can be reliably attached to a container without impairing the function of stacking the containers.

[0011]

In order to achieve this object, the present invention provides a peripheral wall portion to be fitted in the mouth portion of a container formed by forming an annular projection on the outer peripheral surface of the mouth portion, and an upper end of the peripheral wall portion. A top plate portion that is connected to the inner peripheral surface of the peripheral wall portion, and a lower engaging portion that fits and engages with the annular projection of the mouth portion of the container in a state where the lid body is fitted to the mouth portion, , A container positioned in the upper stage when two containers are stacked in the packaged state, forming an upper engaging portion that fits and engages with the annular projection of the mouth portion of the container in the opened state An overcap formed by forming a recess into which the bottom part of the recess fits, the recess is located at substantially the same height as or above the upper engaging portion, and on the lower surface of the outer peripheral portion of the recess, The downward projection is formed in a cylindrical shape or intermittently along the circumferential direction.

[0012]

With this structure, since the recess of the top plate is located above the inward projection of the upper stage, the upper engaging portion fits into the annular projection of the container after opening. The diameter of the recess can be freely set without impairing the function of matching, so that even the above-described neck-in type container can be stacked in a packaged state without slipping movement.

Further, when the overcap is extended in a posture inclined with respect to the horizontal plane in the packaging step and the mouth of the container is hooked at the lower end thereof, the projection provided on the lower surface of the recess abuts on the upper surface of the lid. By doing so, it is possible to prevent the annular protrusion of the container from fitting into the upper engaging portion of the overcap, so that the overcap is attached to the container with its lower engaging portion engaged with the annular protrusion of the container. Therefore, it is possible to reliably prevent the overcap from being attached incorrectly in the packaging process.

Therefore, according to the present invention, even if the ratio of the diameter of the mouth portion to the diameter of the bottom portion is different, it can be stacked in multiple stages without causing a mounting error in the packaging process, and can be stored. The space for display and display can be effectively used. Further, according to the structure of claim 2, when the overcap is fitted into the mouth of the container after opening, the projection fits tightly on the inner circumference of the mouth of the container, and the projection serves as an inner stopper for the container. However, there is an advantage that the sealing property after opening can be remarkably improved.

[0015]

Embodiments of the present invention will now be described with reference to the drawings (FIGS. 1 to 6).
It will be described based on. Reference numerals A and B in these figures
Are a container and a lid, respectively, which are formed in the same manner as the conventional one, and reference numeral 1 represents an overcap according to the present invention.
The overcap 1 is composed of a peripheral wall 2 and a top plate portion 3. On the inner surface of the peripheral wall 2, upper and lower two steps of inward projections 4 and 5 are formed in an annular shape, respectively. The engaging portion 6 and the upper engaging portion 7 are formed, and the top plate portion 3 is provided with a recess 8 into which the bottom portion of the container A in the upper stage is fitted when the upper and lower portions are stacked in a packaged state. Is formed so as to be located above or above, and a reinforcing recess 9 is formed in a region of the recess 8 excluding a region near the outer periphery thereof.

On the lower surface of the outer cap portion of the recess 8 of the overcap 1, a downward protrusion 10 extending to the same height as the upward inward protrusion 5 is formed in a ring shape. In this case, the outer diameter of the protrusion 10 is set to be slightly larger than the inner diameter of the mouth of the container A.
In the above configuration, in the packaged state, as shown in FIG. 2, by fitting the bottom of the container A located in the upper stage into the recess 8 of the overcap 1 in the container A located in the lower stage, a large number of containers A can be stored. Can be stacked without slipping.

Further, since the recess 8 is located above the upper engaging portion 7, even in the case of the neck-in type container A, in the opened state, as shown in FIG.
The upper engaging portion 7 by pushing in against the elasticity of the container A
The container A can be sealed by fitting it into the engaging projection A1 of. In this case, if the outer diameter of the protrusion 10 is set to be slightly larger than or equal to the inner diameter of the mouth of the container A, the protrusion 10 serves as an inner plug for the container A, so that the container 10 can be reliably sealed. .

On the other hand, as shown in FIG. 5, in the packaging process, the overcap 1 is extended from the upper side in a slanted posture to the transfer path of the container A, and the lower end of the overcap 1 is opened at the mouth of the container A. Even when the recess 8 is located above the upper engagement portion 7 of the upper stage when hooked, the projection 1
When 0 touches the upper surface of the lid B, the mouth of the container A is prevented from fitting into the upper engaging portion 7, so that the overcap 1 attaches the lower engaging portion 6 to the upper engaging portion 7. Annular protrusion A1
It is mounted in a normal state that is engaged with.

Note that the bottom surface of the recess 8 may be formed flat as shown by the alternate long and short dash line 3a in FIG. 2 without forming the reinforcing recess 9 in the recess 8 (in this case, as shown in FIG. As shown by the dotted line, on the lower surface of the recess 9 formed flat,
Reinforcing ribs that extend between the inner peripheral surfaces of the protrusions 10 may be formed in a cross shape in plan view). In the above-mentioned embodiment, the projection is formed in a cylindrical shape, but the projection may be formed intermittently at appropriate intervals along the circumferential direction, or a plurality of projections are formed concentrically in a plan view. Alternatively, it may be formed into a spiral shape.

Further, it goes without saying that the vertical inward projections are not limited to being formed in an annular shape, but may be provided at appropriate intervals along the circumferential direction.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an overcap and a container.

FIG. 2 is a cross-sectional view in a stacked state.

FIG. 3 is a separated cross-sectional view in an opened state.

FIG. 4 is a cross-sectional view showing a state in which an overcap is attached to the opened container.

FIG. 5 is a cross-sectional view showing a packaging process.

FIG. 6 is a partial cross-sectional view of a conventional example.

FIG. 7 is a diagram showing a conventional packaging process.

FIG. 8 is a perspective view of a neck-in type container.

FIG. 9 is a cross-sectional view of a conventional example mounted on a neck-in type container.

FIG. 10 is a diagram showing a problem when the conventional example is applied to a neck-in type container.

[Explanation of symbols]

 A container A1 annular protrusion B lid 1 overcap 2 peripheral wall 3 top plate 6 lower engaging portion 7 upper engaging portion 8 recess 10 protrusion

Claims (2)

[Claims] 1. A peripheral wall portion fitted to the mouth portion of a container having an annular projection formed on an outer peripheral surface of the mouth portion, and a top plate portion connected to an upper end of the peripheral wall portion. On the inner peripheral surface, a lower engaging portion that fits and engages with the annular protrusion of the mouth portion of the container in the state where the lid is fitted to the mouth portion, and the annular protrusion of the mouth portion of the container in the opened state. An overcap formed with an upper engaging portion that fits and engages with each other, and the top plate portion is formed with a recess into which the bottom portion of the container located in the upper stage is fitted when the two containers are stacked in a packaged state. Where the recess is positioned at substantially the same height as or above the upper engaging portion, and a downward projection is formed on the lower surface of the outer peripheral portion of the recess along the cylindrical or circumferential direction. A container overcap characterized by being formed intermittently. 2. The container according to claim 1, wherein the protrusion is formed in a cylindrical shape, and the outer diameter of the protrusion is the same as or slightly larger than the inner diameter of the mouth of the container. Overcap.