JPH0430112Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is an improvement of a container with a lid, which consists of a container having a mouth and a lid that is removably placed over the mouth and is rotatable relative to the mouth. Regarding.

[Prior Art] As a conventional technology for the above-mentioned container with a lid, there is one disclosed in Japanese Patent Publication No. 55-34071, for example.

FIGS. 10 and 11 schematically show this container with a lid, and in both figures, 31 is a container and 32 is a mouth of the container 31. The mouth portion 32 includes an annular bead 33 and a swollen projecting portion 34 formed below the bead 33 and having peaks 34A and troughs 34B arranged alternately. 35
is a lid that is removably placed over the mouth portion 32, and includes a lid top portion 36 and a lid peripheral wall portion 37 that can elastically expand outward.
It is composed of. A shoulder surface 33 facing downward of the bead 33 is provided on the inner peripheral surface of the lid peripheral wall portion 37.
A hook 38 that can be engaged with A, and a protrusion 39 that is located below the hook 38 and contacts the peak 34A of the overhanging portion 34 to expand the lid peripheral wall 37 outward. There is.

Then, when the protrusion 39 is located in the valley 34B of the overhanging portion 34 and the hook 38 on the lid peripheral wall 37 side and the bead 33 on the mouth portion 32 side engage with each other, the lid 35
is configured to be locked to the opening 32 of the container 31.

[Problem that the invention attempts to solve]

However, the container with a lid configured as described above has a drawback that the lid 35 cannot be removed from the opening 32 of the container 31 unless the lid 35 is rotated sufficiently, making it difficult to use.

The present invention was developed with the above-mentioned considerations in mind, and its purpose is to provide ease of use that allows the lid to be attached and removed with a single touch, as well as to allow for easy removal of the lid and a good airtight seal. Our goal is to provide containers with excellent lids.

[Means for solving problems]

In order to achieve the above-mentioned object, a container with a lid according to the present invention is a container with a lid that includes a container having a mouth and a lid that is detachably placed over the mouth and is rotatable with respect to the mouth. , the mouth portion includes a locking portion provided around the upper end of the outer circumferential surface, a plurality of inclined surface portions formed on the outer peripheral surface of the mouth portion below the locking portion, and a plurality of inclined surface portions below the locking portion and formed on the outer peripheral surface of the mouth portion. and a peak formed between the tops of the sloped surface parts, and the lid has a lid top part and a lid that hangs down from the periphery of the lid top part and is expandable outward. A lid peripheral wall portion;
The lid has a plurality of undercut portions formed on the inner circumferential surface of the lid peripheral wall portion and capable of engaging with the locking portion, and a bulge portion formed below these undercut portions, When the lid is rotated, the lower end side abutting portion of the bulge rides on the inclined surface portion, and when the lid is further rotated, the undercut portion is expanded by the mountain portion and is no longer engaged with the locking portion. The present invention is characterized in that, when the lid is released, the lower end side abutting portion of the bulging portion rises along the inclined surface portion, and the lid is removed from the mouth portion.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

1 to 7 show an example of a container with a lid according to the present invention. In FIGS. 1 and 2, 1 is a container such as a bottle that can contain jam, marmalade, etc., and 2 is a container with a lid. The opening of the container 1 has a circular shape in plan view, for example. A locking portion 3, an inclined surface portion 4, a peak portion 5, etc. are formed on the outer circumferential surface 2A of this mouth portion 2.

That is, the locking portion 3 is attached to the upper end of the outer circumferential surface 2A.
It is provided around the entire circumference so as to slightly protrude from the surface of A, and the upper surface 3A of this locking portion 3 is finished as a sealing surface.

Then, the inclined surface portions 4... are arranged so as to divide the circumference of the outer circumferential surface 2A into four equal parts (see Figs. 3 and 4).
It is provided at the lower part of the outer circumferential surface 2A, and each inclined surface portion 4... has a top portion 4A at its center, as shown in FIG.
The top portion 4A has inclined slopes 4B, 4B at both ends thereof, and has a chevron shape so that the entire portion protrudes outward from the surface of the outer circumferential surface 2A (the degree of protrusion is slightly larger than that of the locking portion 3). is formed.

Moreover, the mountain portion 5 is immediately below the locking portion 3, and
For example, two are provided between the top portions 4A, 4A of the adjacent slope portions 4, 4, and the slope portions 4
. . . (see FIG. 3), and is formed so that the center is high so as to slightly protrude from the surface of the outer circumferential surface 2A. 2 formed between the top parts 4A, 4A of the adjacent slope parts 4
The peak portions 5, 5 are the top portions 4A, 4 of the slope portions 4, 4.
The distances from A are made equal. still,
Reference numeral 6 denotes a flange-shaped portion provided around the lower part of the mouth portion 2.

7 is a lid that is detachably placed over the mouth part 2 and is rotatable relative to the mouth part 2, and is manufactured from a suitable thermoplastic synthetic resin material such as polyethylene or polypropylene by a suitable method such as injection molding. .
This lid 7 has a flat lid top portion 8 having a circular planar shape.
and a cylindrical lid peripheral wall portion 9 that is integrally formed with the lid top surface portion 8 and hangs down from the periphery of the lid top surface portion 8 .

The lid peripheral wall portion 9 has appropriate elasticity so that it can expand outward, and the inner peripheral surface 9A has four undersides that can be engaged with the locking portion 3 in a portion close to the lid top surface portion 8. The cut portions 10 are formed so as to protrude inwardly, for example, at positions dividing the circumference into four equal parts, and
These undercut parts 10... are located below and between the undercut parts 10...
Four bulging portions 11 are similarly formed to protrude inwardly at positions dividing the circumference into four equal parts.

That is, the undercut portion 10... and the bulge portion 11...
As shown in FIG. 5, they are formed every other part so as to divide the circumference into eight equal parts. The undercut portions 10 can engage with the locking portions 3, and when the lid 7 is rotated, they come into contact with the peaks 5 formed below the locking portions 3, and are further rotated in the same direction. When the undercut part 10... is the mountain part 5
The lid peripheral wall 9 is expanded by being pushed outward by the lid. The bulging portions 11 are, for example, triangular in plan view, and have a curved lower end contact portion 11A formed on the lower end side of the bulged portions 11, which abuts and is guided by the upper edge of the inclined surface portion 4 when the lid 7 is rotated. There is.

Incidentally, it is preferable that the inclined surface portions 4..., the mountain portions 5..., the undercut portions 10, the bulging portions 11... are arranged as follows. That is, when trying to attach the lid 7 to the mouth portion 2, the undercut portion 10 is attached to the peak portion 5.
When the bulging part 11 comes into contact with the slope 4 of the slope part 4,
It is best to have it slide along line B.

The operation of the container with a lid having the above structure will now be described with reference to FIGS. 6 and 7.

First, when covering the opening 2 of the container 1 with the lid 7,
When the lid top part 8 is lightly pushed downward with the lid 7 placed on the mouth part 2, the undercut parts 10 are engaged with the locking parts 3, and the lid 7 is completely attached to the mouth part 2 ( (See Figures 2 and 7A). In this case, the bulge 11
When the lower end contact portion 11A is in a position where it contacts the slope 4B of the inclined surface portion 4, the lower end contact portion 11A
falls diagonally downward while being guided by the slope 4B, and the undercut portions 10 engage with the locking portions 3 in a predetermined state (see FIG. 7A).

Next, as shown in FIGS. 2, 6, and 7A, when removing the lid 7 from the state where the lid 7 is completely attached to the mouth 2, the bulging part 11 is moved to the left. Apply rotational force to the lid 8. Then, the lower end side contact portion 11A of the bulging portion 11 contacts the slope 4 of the slope portion 4.
At the same time, the undercut portion 10 comes into contact with the inclined base end 5A of the mountain portion 5. Then, when the lid 8 is further rotated in the same direction in this state, the undercut portion 10 is expanded by the protruding portion of the peak portion 5, and the engagement with the locking portion 3 is released, and the undercut portion 10 is expanded. The lower end side contact portion 11A of the protruding portion 11 has a slope 4B
, the entire lid 7 is lifted, and the lid 7 is removed from the mouth 2 (7th
(See Figure B).

In this case, when attaching the lid 7 to the mouth portion 2, the lower end side contact portion 11A of the bulging portion 11 is attached to the slope 4 of the slope portion 4.
It often descends along line B, and therefore, in many cases when the lid 7 is fully attached,
Since the bulging portion 11 is in contact with or near the lower end of the slope 4B of the slope portion 3, it can be removed from the mouth portion 2 by simply rotating the lid 7 slightly in a predetermined direction. Become.

The present invention is not limited to the above-described embodiments, but can be implemented with various modifications.

That is, in the embodiment shown in FIG. 8, in the lid 7, four undercut portions are provided in a portion of the inner circumferential surface 9A of the lid peripheral wall portion 9 near the lid top surface portion 8 so as to divide the circumference into four equal parts. 10... (only one is shown in the figure), and four bulges 11... are provided at the opening side end of the inner circumferential surface 9A at lower positions corresponding to each undercut portion 10... are provided so that the undercut portions 10... and the bulging portions 11... are vertically aligned with each other, while the mouth portion 2
In this case, the peak portions 5 are provided at positions closer to the inclined surface portion 4. With this configuration, the lid 7 can be smoothly opened regardless of the positional relationship between the lid 7 and the mouth portion 2.
can be installed.

In addition, as shown in FIG. 9, a mountain portion 5 is provided at the mouth portion 2 at a position that divides the slope portions 4, 4 at a ratio of approximately 1:2.
may be provided.

It goes without saying that the present invention can also be applied to a device in which a so-called pilfer-proof band is integrally formed at the lower end of the lid 7, that is, at the lower end of the lid peripheral wall portion 9.

[Effect of idea]

As explained above, the container with a lid according to the present invention has an opening having a locking part provided around the upper end of the outer circumferential surface;
A plurality of sloped surfaces formed on the outer circumferential surface of the mouth portion below the locking portion; and a mountain portion formed between the tops of the sloped surface portions below the locking portion. On the other hand, the lid has a lid top surface portion, a lid peripheral wall portion that hangs down from the periphery of the lid top surface portion and is expandable outward, and is formed on an inner peripheral surface of the lid peripheral wall portion. It has a plurality of undercut parts that can be engaged with the locking part, and a bulging part formed below these undercut parts, and when the lid is rotated, a lower end side contact part of the bulging part rides on the inclined surface part, and when the lid is further rotated, the undercut part is expanded by the mountain part, and the engagement with the locking part is released, and the lower end side of the bulge part comes into contact with the undercut part. The lid rises along the sloped surface so that the lid can be removed from the mouth, so when putting the lid over the mouth, simply place the lid on the mouth and push it downward. Moreover, when opening the lid, it is only necessary to rotate the lid, so the lid can be attached and removed with one touch.

In particular, in this invention, when removing the lid,
By rotating the lid, the undercut portion is expanded radially outward by the crest, and the engagement between the two is released, so that the rotational force of the lid is straightened out. This undercut part,
It functions as an expanding force directed outward in the radial direction, and unlike conventional products, it does not require a particularly large force to disengage the undercut part and the locking part, and the lid can be removed with a light force. Moreover, the sealing force can be increased to the extent that disengagement can be performed with a smaller force than in the past, and the usability of this type of container with a lid can be significantly improved.

[Brief explanation of drawings]

1 to 7 show an embodiment of the present invention,
Fig. 1 is an exploded perspective view showing the main parts of a container with a lid, Fig. 2 is a sectional view showing a state in which the lid is completely attached to the mouth of the container, Fig. 3 is a sectional view taken along the - line in Fig. 2; 4
The figure is a sectional view taken along the - line in Fig. 2, Fig. 5 is a cross-sectional view of the lid, Fig. 6 is an explanatory diagram of the operation, and Fig. 7A is a sectional view of main parts showing the state in which the lid is completely attached to the mouth of the container. , 7th
FIG. B is a cross-sectional view of the main part showing a state in which the lid is removed from the mouth. FIGS. 8 and 9 are exploded perspective views showing essential parts of containers with lids according to other embodiments of the present invention, respectively. FIG. 10 and FIG. 11 are a perspective view and a partial sectional view of the vicinity of the mouth, respectively, for explaining the prior art. 1... Container, 2... Mouth part, 3... Locking part, 4...
...Slope part, 7... Lid, 8... Lid top part, 9...
Lid peripheral wall portion, 10... Undercut portion, 11...
Swollen portion, 11A...lower end side contact portion.

Claims (1)

[Scope of utility model registration request] In a container with a lid that includes a container having a mouth and a lid that is removably placed over the mouth and is rotatable with respect to the mouth, the mouth has a locking part provided around the upper end of the outer peripheral surface. a plurality of sloped surface parts formed on the outer peripheral surface of the mouth part below the locking part; and a plurality of sloped surface parts formed below the locking part and between the tops of the sloped surface parts. On the other hand, the lid has a lid top surface portion, a lid peripheral wall portion that hangs down from the periphery of the lid top surface portion and is expandable outward, and is formed on an inner peripheral surface of the lid peripheral wall portion. It has a plurality of undercut parts that can be engaged with the locking parts, and a bulge formed below these undercut parts, and when the lid is rotated, the lower end side of the bulge comes into contact with the lid. When the contact portion rides on the inclined surface portion and the lid is further rotated, the undercut portion is expanded by the mountain portion and is disengaged from the locking portion, and the lower end side of the bulge portion is A container with a lid, characterized in that the abutment portion rises along the inclined surface portion, and the lid is removed from the mouth portion.