JP2002179109A - Container with plastic cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap which solves a problem in a conventional plastic cap that since a shrinkage factor of the cap when molded differs due to a type of pigment used to color the cap, a cap with small shrinkage is weak in engaging force with a container body so that the cap can be easily removed from the container body, while a cap with large shrinkage is strong in the engaging force with the container body so that it cannot be easily removed from the container body. SOLUTION: An engaging portion 5 with which a plurality of protrusions 4 on an internal surface of the cap 3 are to be engaged is provided on an external surface of the container body 1. A hook 7 surrounded by right and left slits 19 formed on the right and left of the protrusion 4, and an operating portion 6 surrounded by a curved slit 18 forming a self-restoring hinge between the slit 18 and the slits 19, are provided. With the operating portion 6 pressed, the hook moves outward with the hinge as a fulcrum to have the container body 1 and the cap 3 disengaged from each other, thereby solving the above problem.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container having a plastic cap removably attached to an opening of a container body for storing contents.

[0002]

2. Description of the Related Art Containers of the technology to be improved by the present invention are shown in FIGS. This is a container having a plastic cap which is detachably attached to the opening of the container body for storing the contents.
An annular flange 22 is formed on the outer peripheral surface of the upper end opening 21 of the plastic container 23. On the other hand, the plastic cap 23 detachably attached to the opening of the plastic container body 20 has an inner surface near the opening 29. Projections 24 are formed at three places at 120-degree intervals. When the cap 23 is pressed against the container body 20, the elasticity of the cap 23 causes the projections 24 to ride over the collar 22 and engage, so that the cap 23 It is a configuration that fits into the main body 20. Numeral 30 is that the flange 22 is fitted in cooperation with the projection 24 in order to maintain this fitted state, that is, when the projection 24 is engaged with the flange 22, in order to prevent rattling of the cap 23. This is a rib for forming the recess 31. Reference numeral 25 denotes an inner lid attached so as to cover the opening 21 of the container body 20. The inner lid 25 has a cylindrical take-out port 26 formed at the center thereof. The cap 28 is detachably screwed. Inside the container body 20, dressing for cooking,
Other contents are stored.

[0003]

In the above, the attachment of the cap 23 to the container body 20 can be easily performed by pressing the cap 23 against the container body 20.
When removing the cap 23 from the container main body 20, considerable force is required. In particular, in order to prevent the cap 23 from being easily detached during transportation or the like, the stronger the state in which the projection 24 is engaged with the flange 22, the greater the force of detaching the cap 23 becomes. Often struggling,
Inconvenient.

When the contents stored in the container body 20 are, for example, dressings for cooking or the like, the color of the cap 23 is changed according to the kind of the contents, thereby improving the sales effect. Method is adopted,
In this case, the type of the pigment used for coloring the plastic cap 23 causes a difference in the shrinkage rate during molding of the cap 23. Therefore, when the shrinkage is small,
The engaging force with the container body 20 is weakened, and the cap 23 can be easily removed from the container body 20. However, when the shrinkage is large, the engaging force with the container body 20 is increased, and the cap 23 is removed from the container body 20. Can not be easily removed from the If the shrinkage is small, the cap 23 is formed slightly larger, and the fitting between the cap 23 and the container body 20 may be poor, and the relationship between the two may be loose.

For this reason, when molding plastics colored with different pigments by using a mold made with the same reference size, even if the shrinkage ratio is slightly small, the cap 23 is required.
And the container body 20 are designed to be in a predetermined state. In this case, in the case of a pigment having a slightly large shrinkage, the fitting between the cap 23 and the container body 20 becomes tight, It will be difficult to remove 23 from container body 20.

The present invention has been made in view of the above problems, and provides a technique for easily removing a cap from a container body even for a cap due to a difference in shrinkage ratio in the case of plastic molding. is there.

[0007]

According to the present invention, there is provided a plastic cap which is removably mounted on an opening side of a container body for storing contents, and is provided on an inner surface of the cap along an opening of the cap. A plurality of protrusions formed at intervals and an engagement portion with which the protrusion engages on the opening side outer surface of the container body are provided, and the cap is provided on the left and right sides of the protrusion. A container having a hook portion surrounded by left and right slits extending from the opening toward the top of the cap, and an operation portion surrounded by a curved slit constituting a self-returning hinge between the left and right slits; The protrusion is engaged with the engaging portion by pressing the cap to the outside, and the outward movement of the hook portion with the hinge portion as a fulcrum based on the pressing of the operating portion inward of the cap causes the hook to move outward. The protrusion is Constitute a snap mechanism for the operation out of the engagement portion, to solve the above problems.

Further, the present invention is characterized in that the snap mechanism is provided at one position of the projection.

Further, the present invention provides a plastic cap, wherein the container main body has an inner lid at an opening, and the cap covers the inner lid and is detachably attached to the container main body. It is characterized by having.

[0010]

Next, an embodiment of the present invention will be described. Each figure shows an embodiment of the present invention,
1 is a vertical sectional side view of the upper part of the container of the present invention with a cap placed thereon, FIG. 2 is a perspective view from below the cap, FIG. 3 is an explanatory view of an operation state of removing the cap from the container main body, and FIG. It is explanatory drawing of the state removed from.

In the drawing, a container P to which the present invention is applied
Has a plastic cap 3 removably mounted on the opening 2 side of the container body 1 for storing the contents, and is formed along the opening 8 of the cap 3 at an interval on the inner surface of the cap 3. A plurality of projections 4 and an engagement portion 5 with which the projections 4 are engaged are provided on the outer surface of the container body 1 on the opening 2 side. A hook portion 7 surrounded by left and right slits 19 extending toward the top, and an operation portion 6 surrounded by a curved slit 18 constituting a self-returning hinge portion Y between the left and right slits 19; When the cap 3 is pressed against the container body 1, the protrusion 4 engages with the engagement portion 5, and the hook portion 7 having the hinge portion Y as a fulcrum is outwardly moved based on the pressing of the operating portion 6 inward of the cap 3. Movement of the protrusion 4 from the engagement portion 5 due to the movement of Constitute a mechanism.

A further embodiment will be specifically described. The container body 1 is a cylindrical container having a substantially circular cross-section, and is provided with an annular engaging portion 5 on the outer surface on the opening 2 side, and is mainly made of plastics. The cap 3 is made of plastics whose opening 8 has a circular shape like the container body 1 and has a dome shape with a round top. The protrusions 4 of the cap 3 are provided at three places on the inner surface near the opening 8 of the cap 3 at intervals of approximately 120 degrees along the opening 8. The height of the projection 4 is about 0.1 to 1.0 mm, and the thickness of the cap 3 is about 0.5 to 2.0 mm.

The cap 3 has a hook portion 7 surrounded by a vertical left and right slit 19 extending from the opening 8 of the cap 3 toward the top of the cap 3 on the left and right sides of the projection 4.
An inverted U-shaped slit 1 corresponding to above the hook portion 7
And an operation unit 6 surrounded by 8. The inverted U-shaped slit 18 and the left and right slits 19 have a small interval S, and constitute a self-returning hinge Y there. The interval S is about 1 to 5 mm, and a self-returning hinge operation is obtained. The shape of the slit 18 is not limited to an inverted U-shape, and can be formed in various shapes such as a gate shape and a mountain shape.

As a result, the cap 3 alone, that is, the stationary shape of the cap 3 is such that the operation portion 6 and the hook portion 7 are substantially flush with the peripheral portion of the cap 3.
When each of the projections 4 gets over the engagement portion 5 due to the pressing of the cap 3 against the container body 1, the hook portion 7 is moved outward of the cap 3 with the hinge portion Y as a fulcrum, and the operation portion 6 is moved inward of the cap 3. When the projection 4 gets over the engagement portion 5 and the projection 4 engages with the engagement portion 5, the operation portion 6 and the hook portion 7 return to the normal shape by the self-return function of the hinge portion Y. .
That is, due to the elasticity of the cap 3, the cap 3 is stably held by the container main body 1 in a state where the respective protrusions 4 are fitted to the engaging portions 5 of the container main body 1. Thus, the operation unit 6
And the hook portion 7 and the hinge portion Y, the protrusion 4 is elastically engaged with the engagement portion 5 by the pressing of the cap 3 against the container body 1,
The snap mechanism is configured such that the protrusion 4 is disengaged from the engagement part 5 by the outward movement of the hook part 7 with the hinge part Y as a fulcrum based on the pressing of the operation part 6 inward of the cap 3. .

The snap mechanism, that is, the operation part 6, the hook part 7, and the hinge part Y may be formed on all of the three protrusions 4. However, depending on the configuration, there is a possibility that the engagement relationship between the container body 1 and the cap 3 is weakened or the molding die becomes complicated. For this reason, the cap 3 is provided not at all three places but at least at one place with a smaller number, and the engagement between the container body 1 and the cap 3 is released at this part.
Can be easily removed from the container body 1 to achieve the intended purpose.

In the illustrated embodiment, the snap mechanism is provided at one of the three projections 4 provided at intervals of 120 degrees. In this case, the projection 4 of the cap 3 is
When the cap 3 is removed from the state where the cap 3 is fitted to the joint 5, as shown in FIG. 3, the operation part 6 of the cap 3 is pushed inward with the thumb to engage the projection 4 with the engagement part 5. In the released state, the cap 3 is easily detached from the container body 1 by applying an acting force in the direction of pulling the cap 3 away from the container body 1. Or, as shown in FIG. 3, the cap 3 and the container body 1
The cap 3 is easily detached from the container body 1 by applying an acting force in a direction of separating the cap 3 from the container body 1 while applying an acting force in the opposite direction clockwise or counterclockwise.

The number of the protrusions 4 is not limited to three, but may be four or more. In this case, the snap mechanism does not need to be provided on all parts of the projection 4, and the cap 3 can be easily removed by releasing the engagement between the container body 1 and the cap 3 by the snap mechanism. It may be provided in such a number as can be used. For this reason, the snap mechanism is provided at one or more positions in consideration of the maintenance of the engagement relationship between the container body 1 and the cap 3, the structure of the molding die, the design of the cap 3, and the ease of finger operation. It can be provided at a location.

In the engagement state 9 between the projection 4 and the engagement portion 5, the engagement portion 5 is fitted in cooperation with the projection 4 in order to hold the cap 3 in a stable state without rattling. These are ribs for forming the recess 10. Thereby, the container body 1
When the cap 3 is pressed so as to fit into the engaging portion 5, further pressing of the cap 3 is stopped at the position where the engaging portion 5 fits into the concave portion 10, and the cap 3 is stably fixed to the container body 1. Can hold.

As another embodiment for stably holding the cap 3 on the container body 1, when the cap 3 is pressed so as to fit into the engaging portion 5 of the container body 1, the opening 8 of the cap 3 is closed. Since the end portion abuts the shoulder portion 17 of the container body 1, the cap 3 can be fitted to the engaging portion 5 of the container body 1. With this configuration, further pressing of the cap 3 can be stopped, and the cap 3 can be stably held on the container body 1.

Reference numeral 11 denotes an inner lid mounted so as to cover the opening 2 of the container main body 1. An annular convex portion 15 formed on the outer surface of the opening 2 has an annular convex portion 16 formed on the lower inner surface of the inner lid 11.
Are attached to the container main body 1 by engaging with each other. The inner lid 11 has a cylindrical content spout 13 formed at the center, and the spout 13 is formed on the outer peripheral surface of the screw portion 1.
4, the screw portion of the middle cap 12 is detachably screwed.

In the container body 1, a dressing for cooking and other contents are stored. When the opening 2 of the container body 1 is closed by the inner lid 11 to which the contents are filled and the inner cap 12 is attached,
The cover 3 is covered with the inner lid 11 so that the cap 3 is engaged with the container main body 1 as described above, thereby obtaining a product form.
With the cap 3 removed and the middle cap 12 rotated and removed from the inner lid 11, the container body 1 is shaken or the container body 1 is pinched and deformed by utilizing the elasticity of the container body 1, so that the container body 1 is deformed. The contents of the container body 1 can be taken out.

The cap 3 is made of polyethylene terephthalate (PET) colored with a pigment of each color in order to color-code according to the type of contents in the container body 1.
Plastics such as polypropylene and polypropylene are formed into a predetermined shape by injection molding or other molding methods.
The container body 1 is made of polyethylene terephthalate (P
Plastics such as ET) and polypropylene are formed into a predetermined shape by blow molding such as direct blow or rotary blow, or other molding methods. The container body 1 may be made of glass, but is preferably made of plastic in consideration of productivity and convenience of handling by consumers. Further, since the contents of the container main body 1 are made visible from the outside by being made of a transparent material, it is convenient for sale and use.

The present invention is not limited to the above-described embodiments, and various changes can be considered without departing from the technical scope of the present invention, and the present invention includes various embodiments.

[0024]

According to the present invention, even if the shrinkage of the cap changes depending on the type of pigment for coloring the cap,
It is easy to remove the cap from the container body. For this reason, the present invention is suitable for a plastic container form in which a cylindrical container body is covered with a round dome-shaped cap.

Further, since the projections of the cap can be sufficiently engaged with the container body by being arranged at about three places, if one of them is provided with a snap mechanism, the engagement can be released. Since it can be easily performed, the mold configuration is also simplified, and the strength of the cap can be sufficiently maintained.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of an upper part of a container of the present invention in a state where a cap is put on the container.

FIG. 2 is a perspective view from below of a cap of the container of the present invention.

FIG. 3 is an explanatory view of an operation state in which a cap of the container of the present invention is removed from a container main body.

FIG. 4 is an explanatory view of a state where a cap of the container of the present invention is removed from a container main body.

FIG. 5 is a perspective view of a container of the technology to be improved by the present invention.

FIG. 6 is a perspective view of the cap of the container of FIG. 5 as viewed from below.

7 is a vertical sectional side view of an upper portion of the container of FIG. 5 where a cap is placed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Container main body 2 ... Upper surface opening part of container main body 3 ... Cap 4 ... Projection part 5 ... Engaging part 6 ... Operation part 7 ... Hook part 8 ... Opening 9 ... Rib 10 ... Concave part 11 ... Middle lid 12 ... Middle cap 18, 19 ... Slit Y ... Hinge part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA02 AA12 AA24 BA03 CA01 CA10 CB02 CB03 CC03 DA01 DB12 DB13 DB14 EA04 EB02 EC03 FA09 FB02 FC13 FD01 GA01 GA08 GB01 GB12 GB14 GB16 LA17 LB02 LB07 LC01 LD01

Claims (3)

[Claims] 1. A plastic cap detachably mounted on an opening side of a container main body for storing contents,
A plurality of projections formed at intervals on the inner surface of the cap along the opening of the cap, and an engagement portion with which the projections are engaged on an opening side outer surface of the container body, wherein the cap A hook portion surrounded by left and right slits extending from the opening of the cap toward the top of the cap on the left and right sides of the protrusion, and a curved slit that constitutes a self-returning hinge between the left and right slits. An operating portion is enclosed, and the projection is engaged with the engaging portion by pressing the cap against the container body, and the hinge portion is used as a fulcrum based on the pressing of the operating portion toward the inside of the cap. A container having a plastic cap, characterized in that the container has a snap mechanism that operates so that the protrusion is disengaged from the engaging portion by the outward movement of the hook. 2. The container according to claim 1, further comprising a plastic cap provided with a snap mechanism at one of the protrusions. 3. The plastic according to claim 1, wherein the container body has an inner lid at an opening, and the cap covers the inner lid and is detachably attached to the container body. Container having a cap made of.