JP2001206409A - Synthetic resin container with cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a wrongful opening during handling before an actual opening and to unseal the opening simply by a specified operation, by a method wherein outward-mounting of a cover body to a container main body is made maintainable appropriately while easiness for flexible deformation is kept at an opening of the container main body. SOLUTION: For a container composed of the container main body 1 in the form of synthetic resin cup-shaped thin container and the dish-shaped thin cover body 9, a holding protuberance 13 for riding across a holding piece 5 is provided around the inner circumferential face of a mounting drum 12 of the cover body 9 which is detachably mounted outwardly to a fitting drum 4 having the holding piece 5 at the outer circumferential face thereof and forming an opening for the container main body 1, a plurality of fitting ribs 16 for regulating by butting the inwardly-tilting flexible deformation of the fitting drum 4 produced by the outward mounting of the mounting drum 12 are arranged at intervals in the circumferential direction, and the mounting of the cover body 9 onto the container main body 1 is intermittently reinforced, thereby mounting the cover body stably while being available for easy detachment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wide-open cup-shaped thin-walled container body which is mainly used as a container for dairy products such as cheese, butter and yogurt and which is injection-molded with a synthetic resin material. The present invention relates to a container with a lid made of a synthetic resin, which is made of a synthetic resin material and also has an inwardly protruding deep dish-shaped thin-walled lid which covers the opening of the container body and is fitted with an external fitting.

[0002]

2. Description of the Related Art A thin cup-shaped container, which is a synthetic resin injection-molded product often used as a container for storing cheese, butter, and yogurt, is filled with contents and immediately has an opening such as a seal sheet. Sealed by welding, then in the opening of the container body sealed with a seal sheet, etc.
A flat dish-shaped lid that covers this opening and protects the seal sheet is fitted to the outside.

[0003] As described above, the lid in this kind of container with a synthetic resin lid merely protects the mechanically weak seal sheet mechanically. However, recently, the lid has been turned down. It is formed in a deep dish shape, a storage space is formed between the lid and the seal sheet, and a tool such as a spoon or a seasoning such as a sauce is integrally attached to the storage space, thereby allowing the contents to be contained. They can easily eat and drink according to their tastes.

[0004] The detachable assembling of the lid to the container body is mainly performed by an undercut connection utilizing a flexural deformation which occurs relatively easily in accordance with the structure of the opening on the container body side such as a wide opening and a thin wall. To achieve.

[0005]

However, in the above-mentioned prior art, when an external force is partially applied to the peripheral surface of the lid, for example, as if the lid is grasped from the side with a fingertip, the container becomes There has been a problem that the opening of the main body is easily partially deformed and deformed, whereby the undercut connection is disengaged and the lid may be detached improperly.

In order to prevent the lid from being illegally detached and to achieve a stable assembly of the lid with respect to the container main body, it is conceivable to construct the opening of the container main body into a structure that is hardly bent and deformed. If the opening of the container body is made difficult to bend and deform as described above, it is difficult to achieve the opening and detaching operation of the lid, and it is difficult to open and close the lid when using the container, or to open and close the lid as it is There was a problem that the operation could not be performed.

Accordingly, the present invention has been devised to solve the above-mentioned problems in the prior art, and it has been proposed to remove the lid from the container body while maintaining the flexibility of the opening of the container body. It is a technical object of the present invention to make it possible to properly hold a fitting assembly, to prevent the occurrence of unauthorized opening during handling before opening, and to easily open according to a predetermined operation. I do.

[0008]

Means for Solving the Problems Among the present invention for solving the above technical problems, the means according to the first aspect of the present invention comprises a container body which is a wide-open cup-shaped thin-walled container, and an opening of the container body. And an open cylindrical portion forming an opening of the container body, and a locking piece is protruded from the outer peripheral surface to stand upright. At the lower end of the outer peripheral surface of the fitting cylinder piece, a ring piece is provided around the outer flange, and the fitting piece is configured.
The engaging projection formed on the inner peripheral surface of the assembled portion formed on the peripheral end of the lid body, which is engaged with the engaging piece of the container body from below and is engaged with the engaging piece of the container body. A plurality of fitting ribs, in which a fitting cylinder piece of a container body that is tilted and bent and deformed inward by fitting with the fitting cylinder piece, abuts on the inner side of the fitting cylinder piece detachably fitted to the outside in the circumferential direction. At least, the inner diameter of the projecting end of the locking projection of the lid is set to a value slightly smaller than the outer diameter of the fitting cylindrical piece of the container body. is there.

When the lid is placed over the opening cylindrical portion of the container body from above and is fitted to the outside as it is, and is pushed down until the fitting cylinder piece of the lid comes into contact with the ring piece of the container body, the lid is brought into contact with the locking projection. In a state where the piece is locked from below by the locking piece of the container body, an outer fitting assembly is attached to the opening of the container body.

When the lid is externally fitted to the opening of the container body, the locking piece of the container body and the locking projection of the lid are undercut-coupled, so that the lid is fitted to the container body. Although the assembling is maintained, the fitting cylindrical piece of the container body is partially tilted inward because the inner diameter of the protruding end of the locking projection of the lid is slightly smaller than its outer diameter. As a result, the undercut connection of the lid to the container body is weakened and destabilized.

However, the fitting tube piece portion of the container body facing the fitting rib of the lid abuts on the fitting rib and is only slightly bent and deformed inward. The locking between the piece and the locking projection of the lid is stably and firmly secured, whereby the external fitting of the lid to the container body is firmly and stably maintained.

When the lid is removed from the container body, that is, when the container body is opened, a pulling force is applied to a part of the fitting cylinder piece of the lid, whereby the fitting cylinder piece part is tilted and bent outward. By deforming and releasing the locking of the locking piece to the locking piece and subsequently applying a lifting force, the unlocking of the locking piece and the locking piece is released over the entire circumference and achieved. You.

According to a second aspect of the present invention, in the first aspect of the present invention, a fitting rib is provided in the shape of a standing plate rib on the outer side of an inner cylinder piece that is suspended inside the fitting cylinder piece of the lid. And the outer end surface of the fitting rib is a guide surface which is inclined inward and downward.

According to the second aspect of the present invention, when the assembled portion of the lid is externally fitted to the opening cylindrical portion of the container body, the fitting cylinder of the container body is tilted and deformed inward. The piece abuts against the fitting rib to prevent the external fitting of the lid from the container body from being impossible or difficult to achieve,
Also, the maximum tilting and bending deformation of the fitting cylinder piece of the container body, which occurs when the locking projection of the lid rides over the locking piece of the container body, can be smoothly and smoothly performed, thereby enabling the container body to be smoothly moved. The attachment of the lid can be achieved satisfactorily.

According to a third aspect of the present invention, in the first aspect of the present invention, a plate-shaped knob is extended laterally at the lower end of the outer peripheral surface of the fitting tube piece of the lid. In addition.

According to the third aspect of the present invention, a part of the fitting tube piece of the lid is tilted and deformed outward by hooking the fingertip on the knob and pulling it up. A lifting force can be applied, so that removal of the lid from the container body, ie opening of the container body, can be achieved simply and reliably.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a fitting tubular piece is erected on an upper end edge of a bottomed cylindrical main body portion through an outer flange in the form of an outer flange. That is,

According to the fourth aspect of the present invention, the mouth flange forms a flat mounting surface around the opening of the container main body.
The container body can be used as a welded mounting surface of a seal sheet for hermetically sealing the container body. When the container bodies are stacked (fitted and stacked), the upper end of the fitting cylinder piece of the lower container body is placed in the upper container. Since the lower end of the main body abuts against the outer peripheral edge of the lower surface of the main body from below, a stable stacked state of the container main bodies can be obtained.

According to a fifth aspect of the present invention, in the first aspect of the present invention, a stack step is formed at an upper end portion of the fitting tube piece, the diameter of which is reduced with a width larger than the wall thickness of the fitting tube piece. What we did.

According to the fifth aspect of the present invention, since the stacking step forms a flat mounting surface on the peripheral edge of the upper surface of the lid, when the lids are stacked together, Since the lower end of the fitting cylinder piece of the upper lid is placed on the stacking step and the upper end of the lower lid is externally fitted, a stable stacking state of the lids can be obtained. .

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The container with the lid is a synthetic resin cup-shaped thin-walled injection-molded product, and a synthetic resin inflated deep dish, which is removably fitted to the opening of the container body 1. And a lid 9 which is a thin-walled injection molded product.

The container main body 1 has a lower end closed by a bottom wall and a tapered cylindrical wall whose diameter is increased upward. After the contents are filled, the sealing sheet 20 is tightly welded to the mouth flange 8 to achieve a sealed storage of the contents. I do.

The opening cylindrical portion 3 has a locking piece 5 protruding from the outer peripheral surface of a cylindrical fitting cylindrical piece 4 erected from the outer peripheral edge of the mouth flange 8. At the bottom of the outer peripheral surface of
An outer flange-shaped ring piece 6 having a short cylindrical skirt tube piece 7 suspended from the outer peripheral edge is provided. The skirt tube 7 mechanically stabilizes the ring piece 6.

The lid 9 is composed of a flat lid main body 10 and an assembling part 11 connected to a peripheral end of the lid main body 10.
It is configured in the shape of a prone deep dish.

The assembling portion 11 is provided at a lower portion of the inner peripheral surface of a fitting cylindrical piece 12 which is vertically provided from the peripheral edge of the lid main body 10 and has a short cylindrical shape having a diameter dimension to be fitted to the fitting cylindrical piece 4. In addition, a locking projection 13 whose projection end inner diameter is slightly smaller than the outer diameter of the fitting cylinder piece 4 is protrudingly provided, and is mounted on the ring piece 6 at the lower end edge of the fitting cylinder piece 12. A mounting ring plate 14 having a knob 19 extending therefrom is continuously provided in an outer flange shape.
A step 15 for the stack, which has a width larger than the wall thickness of the stack 2 and faces upward, is formed.
A plurality of (up to five in the illustrated embodiment) fitting ribs 16 in the form of an upright plate are vertically provided at intervals along the circumferential direction with a certain gap provided between the fitting ribs 16 and the fitting ribs 16. The mating rib 16 is configured to be reinforced by a short cylindrical inner cylinder piece 18 vertically suspended inside the fitting cylinder piece 12.

The locking projection 13 is mounted at a mounting limit position where the mounting ring plate 14 is mounted on the ring piece 6 and is locked from below over the locking piece 5 in this mounting state. The piece 4 is pressed inward to tilt and bend and deform the fitting tube piece 4 in the radially-reducing direction.

The fitting surface of the fitting rib 16 is a guide surface 17 having an outer end surface inclined obliquely downward in a radially-reducing direction in a state where a gap between the fitting rib 16 and the fitting tube piece 12 on the outer end surface thereof is set to a predetermined value. When the locking projection 13 gets over the locking piece 5,
Even if the fitting tube piece 4 is greatly tilted and deformed in the diameter reducing direction, the upper end of the fitting tube piece 4 is fitted with the fitting tube piece 12 and the fitting rib 16.
To smoothly and surely enter the gap between them.

At the time of attaching the assembling portion 11 of the lid 9 to the opening tubular portion 3 of the container body 1, the fitting is carried out by the locking projection 13 as the fitting of the fitting tubular piece 12 to the fitting tubular piece 4 progresses. Although the cylindrical piece 4 is tilted and deformed in the diameter reducing direction, the fitting rib 1
Only the portion of the fitting tube piece 4 facing the fitting rib 6
The degree of the bending deformation is regulated by the contact with the locking pieces 5 and the locking pieces 5 and the locking protrusions 13 according to the degree of the restriction.
And the lid 9 is firmly and stably attached to the container body 1 accordingly.

In the opening operation, by pulling up the knob 19, a force is simultaneously applied to a part of the fitting tube piece 12 of the lid 9 (the part where the knob 19 is provided) in both the pulling direction and the diameter expanding direction. By acting, each part of the fitting tube piece 12 is tilted and deformed in the radially increasing direction in order, so that the locking of the locking projection 13 to the locking piece 5 is sequentially released.

FIG. 4 is a partially enlarged view showing an assembled state of the opening cylindrical portion 3 when the empty container main bodies 1 are stacked, and the upper container main body 1 has a peripheral end of a mouth flange 8 thereof. Parts are placed on the upper end of the fitting tube piece 4 of the lower container body 1, so that the upper and lower container bodies 1 do not closely fit the container main parts 2 together. The stacking is performed in a state where a gap is formed therebetween, so that separation from the stacking state is reliably and promptly achieved.

Similarly, FIG. 5 is a partially enlarged view showing an assembled state of the assembling portion 11 when the lids 9 are stacked together. The lower edge is placed on the stacking step 15 of the lower lid 9, so that the upper lid 9 loosens the upper end of the lower lid 9 at its lower end opening. Since the stacking is performed in the fitted state, separation from the stacking state is reliably and promptly achieved, and the stacking state is stably maintained.

[0032]

Since the present invention has the above-described structure, the following effects can be obtained. According to the first aspect of the present invention, the engagement ribs arranged at intervals along the circumferential direction enhance the locking force between the container body and the lid at the portion facing the engagement rib. Therefore, the attachment of the lid to the container body can be made strong and stable,
Therefore, handling before opening can be made safe without causing unauthorized opening.

Since the fitting tube piece constituting the assembled portion of the lid has only a simple short tube shape, it can be easily and flexibly deformed by an external force acting on a local portion. Therefore, the opening of the lid can be easily and smoothly achieved by sequentially moving and generating the partial deformation of the fitting tube piece in the unlocking direction.

According to the second aspect of the present invention, the pulling force and the outward pulling force are simultaneously applied to a part of the fitting tube piece of the lid simply by applying a pulling force to the knob with the fingertip. Thus, the engagement between the container body and the lid can be easily released while partially deforming the fitting tube piece.

According to the third aspect of the invention, when the container body and the lid are assembled, even if the fitting tube piece of the container body is greatly tilted and deformed, the fitting cylinder piece is securely fitted to the fitting cylinder. It can be made to penetrate into the gap between the piece and the fitting rib, so that the strong and stable assembling of the container body and the lid by the action of the fitting rib can be reliably and stably achieved.

According to the fourth aspect of the present invention, the container bodies can be stacked in a state where they can be easily and surely separated from each other, and the sealing sheet for sealing the container body can be easily and suitably welded. Can be achieved.

According to the fifth aspect of the present invention, the lids can be stacked in a state where the lids can be easily and surely separated, and the stacked state can be maintained stably.

[Brief description of the drawings]

FIG. 1 is a front view of an entire semi-longitudinal view of a first embodiment of the present invention in a state where a lid is assembled.

FIG. 2 is an enlarged sectional view of a main part, showing an assembled portion in the embodiment shown in FIG. 1;

FIG. 3 is an overall bottom view of the lid in the embodiment shown in FIG. 1;

FIG. 4 is an enlarged sectional view of a main part when the container bodies in the embodiment shown in FIG. 1 are stacked.

FIG. 5 is an enlarged sectional view of a main part when the lids in the embodiment shown in FIG. 1 are stacked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Container main body 2; Container main part 3; Opening cylinder part 4; Fitting cylinder piece 5; Locking piece 6; Ring piece 7; Skirt cylinder piece 8; Mouth flange 9; Lid body 10; Assembling part 12; Fitting tube piece 13; Locking projection 14; Mounting ring plate 15; Stack step 16; Fitting rib 17; Guide surface 18; Inner tube piece 19; Knob piece 20;

Continued on the front page F term (reference) 3E033 AA08 BA13 CA02 CA19 CA20 DA05 DA08 DD01 FA02 3E084 AA06 AA12 AA24 AB06 BA01 BA10 CA01 CC03 DA01 DB09 DB13 DC03 FC07 GA08 GB12 GB17 HA02 HB08 HC03 HD01 KA20 LB07

Claims (5)

[Claims] 1. A container body (1), which is a wide-walled cup-shaped thin-walled container, and a protruding deep dish-shaped lid (9) which is fitted to and detached from an opening of the container body (1). The opening cylindrical portion (3) forming the opening of the container body (1) is fitted to the outer peripheral surface of the fitting cylindrical piece (4), which is erected by projecting a locking piece (5) on the outer peripheral surface. In the department,
A ring piece (6) is provided around the outer flange, and the lid (9)
Assembled part (11) formed at the peripheral end of the locking piece (5)
A locking projection piece (13) that locks from below by passing over the projection is provided on the inner peripheral surface, and is fitted inside the fitting cylinder piece (12) detachably fitted to the fitting cylinder piece (4). A plurality of fitting ribs (16) against which a fitting cylinder piece (4) that is tilted and bent and deformed inward by fitting with the fitting cylinder piece (12) abuts are arranged at intervals along the circumferential direction. A container with a synthetic resin lid, wherein at least the inner diameter of the protruding end of the locking projection (13) is set to a value slightly smaller than the outer diameter of the fitting tubular piece (4). 2. An inner cylinder piece suspended from the fitting cylinder piece (12).
A fitting rib (16) is provided on the outside of the (18) in the form of a standing plate rib, and an outer end surface of the fitting rib (16) is a guide surface (17) inclined inward and downward. A container with a synthetic resin lid according to the above. 3. The composite according to claim 1, wherein a tab-like tab (19) extends laterally at the lower end of the outer peripheral surface of the fitting cylinder (12) of the lid (9). Container with resin lid. 4. An upper edge of a bottomed cylindrical container main part (2),
4. The container with a synthetic resin lid according to claim 1, wherein the fitting tubular piece (4) is erected in the form of an outer flange via an opening flange (8). 5. The fitting cylinder piece (1) is attached to the upper end of the fitting cylinder piece (12).
Stack step (15) with a diameter smaller than the wall thickness of 2)
The container with a synthetic resin lid according to claim 1, wherein the container is formed.