WO2021010729A1

WO2021010729A1 - Couplable container

Info

Publication number: WO2021010729A1
Application number: PCT/KR2020/009256
Authority: WO
Inventors: 성보연
Original assignee: (주) 하은캡
Priority date: 2019-07-15
Filing date: 2020-07-14
Publication date: 2021-01-21
Also published as: CN115003604B; JP2022542654A; CN115003604A; CN112224606A

Abstract

The present invention relates a couplable container wherein two or more containers having the same shape are coupled to or decoupled from each other by means of coupling portions opposite to each other, whereby manufacturing costs can be reduced, selective combination of contents can be easily achieved, the possibility of the content leaking can be reduced, and opening/closing of container caps can be facilitated by the coupling between containers.

Description

Couple courage

The present invention relates to a couple container, and more particularly, to a couple container in which two or more containers facing each other can be combined or separated from each other.

In general, containers such as PET (polyethylene terephthalate), PAN (polyacrylonitrile), PVC (poly vinyl chloride), and PP (polypropylene) are made by blow molding plastic materials, and various beverages such as soft drinks, mineral water, tea, and alcohol. B. It is widely used to store or store the contents in the form of powder inside, and to easily retrieve the contents if necessary.

Such a container divides the interior so as to accommodate the contents, and generally forms an opening in which the contents are allowed to enter in a partial area of the upper part, and a stopper for restricting the contents of the contents is installed in this opening.

In addition, when the contained contents are liquid, the container generally accommodates one type of contents, and depending on the user, the contents may be consumed by touching the open opening.

As such, one container is generally used one-to-one for each user, and the type of liquid content is also limited to a kind.

For example, when two or more types of beverages are to be stored, containers corresponding to each beverage are prepared, and the containers are separated from each other, making it difficult to store or carry.

In addition, regardless of whether one person drinks a drink in a single container or two or more people share it, only one drink is contained in one container, so two people with different tastes can each drink the desired drink. Even if you try to drink little by little, there is also a problem that you have to purchase a separate container containing each drink you want.

In addition, when it is difficult to store for a long time by opening once without emptying all the contents of the container, there is also a problem of waste of resources that the remaining contents are eventually discarded.

For the reasons described above, in the related industry, two containers are set, so that two or more users can easily divide and drink hygienically, or to develop a couple container to selectively drink the beverage in the set container according to taste. It is being done.

Among these conventional technologies, Korean Patent Application Laid-Open No. 10-2013-0108796 (hereinafter referred to as'prior technology 1') and Korean Registered Patent Publication No. 10-1022665 (hereinafter referred to as'prior technology 2') A protruding coupling part is formed on one of the facing mating surfaces, and a concave coupling part corresponding to the above-described protruding mating part is formed on the other mating surface. And the release is made possible.

One of the containers constituting the couple disclosed in Prior Art 1 above has a protruding coupling part on the side wall, and the other container is made up of a concave coupling part. Accordingly, the combination of the containers is such that the protruding coupling part of one container is fitted into the concave part of the other container, and is caught by relative rotation in that state.

This prior art 1 is to combine or disengage containers while the openings of the containers are closed with a stopper, and when the container is to be combined or disengaged while the cap is open, the contents contained in the container are inclined openings. There is a risk of leakage through. That is, when the couple containers according to the prior art are separated or combined with each other, there is also a hassle, such as requiring attention to be carried out with the cap closed.

In addition, prior art 1 requires not only manufacturing a container having a protruding coupling part and a container having a concave coupling part, but also making it in different types so that it can be used as a couple container. There are difficulties.

On the other hand, in one embodiment of the prior art 2, the protruding coupling part is formed at a position deviated from the center in the transverse direction to one side with respect to the vertical direction of the container, and the position deviated from the center in the transverse direction to the other side with respect to the vertical direction of the container. A single container with a concave coupling part was manufactured, so that when the two containers are arranged to face each other, the protruding coupling portions facing each other are forcibly fitted or separated by the concave coupling portion.

In this prior art 2, when two containers are to be combined or separated from each other, a force and motion above the coupling pressure occurs in the direction of mutual coupling, and accordingly, the contents of the container are momentarily pulled to one side (yaw motion). ), if the cap of the opening is opened at this time, there is a possibility that the contents may be leaked due to the movement according to the coupling or separation of the coupling.

Among the prior art for preventing the loss of contents due to the above-described yaw movement, Korean Laid-Open Patent Publication No. 10-2013-0107126 (hereinafter referred to as'prior art 3') has been disclosed.

This prior art 3, as shown in the accompanying Figures 7 and 8, the method of combining or separating the two couple containers (1) is a rail protrusion path (2) and a rail groove on the side wall of the container (1). As the furnace 3 is formed in the direction of forming an opening on the upper side of the container 1, it is possible to expect an effect of reducing the yaw motion of the liquid contents in response to the movement of the position of the container 1 due to coupling or separation.

However, prior art 3 is intended to be manufactured by an injection molding method, and accordingly, the shape of the opening is bound to be the same as the horizontal cross-section inside.

Here, most beverage containers are made by blow molding. The shape of the container by blow molding is in a state where the upper part excluding the opening part is covered with a range of substantially the same thickness as the side wall, and the range of the thickness depends on the size of the container and the thickness and shape of the parison. Determined by Accordingly, the thickness of the manufactured container varies in thickness for each part according to the shape, but is within a certain range depending on the shape and thickness of the parison.

The present invention is to solve the problems of the prior art, the object of the present invention, by combining or separating two or more containers of the same shape with each other through a coupling portion facing each other, reducing manufacturing cost, and selective combination of contents It is to provide a couple container that is easy to do so, reduces the possibility of leakage of contents, and facilitates opening and closing of the stopper by coupling.

In addition, it is an object of the present invention to be produced by blow molding, to maintain the same thickness of the sidewall portions and to make the coupling between the coupling portions facing each other, so that the manufacturing cost including the unification of the mold and the management cost of the product It is to provide a couple courage to reduce the courage.

In order to achieve the above object, the couple container according to the present invention has a container shape with an opening formed on the upper side, and is located on one side based on a reference position set in the horizontal direction with respect to the vertical direction of the container from at least one of the side surfaces. A protrusion having a protruding surface that is stepped from the reference surface is formed, and a concave part having a concave surface that is stepped from the reference surface is formed on the other side based on the reference position, and the end of the protrusion adjacent to the concave part is It protrudes from the reference position by a first interval set toward the concave portion, and an end portion of the concave portion adjacent to the protrusion has a shape that is recessed by a second interval set toward the protrusion from the reference position, and faces the concave portion. The boundary surface connecting the end of the protrusion and the end of the concave toward the protrusion forms an acute angle with respect to each of the protrusion and the concave part with respect to the reference position, and the shape of each portion constituting the reference surface and the protrusion and the concave part In a couple container including a coupling portion continuously formed in the vertical direction of the container, the protrusion is a deformation inducing groove or the concave formed extending in a vertical direction concave from the protruding surface at an intermediate portion in a horizontal direction with respect to the vertical direction of the container. A deformation inducing protrusion formed convexly extending in the vertical direction from the surface is further formed, and the concave portion is formed by further forming a deformation inducing protrusion or a deformation inducing groove in which the deformation inducing groove or the deformation inducing protrusion positioned opposite to each other is correspondingly inserted. It features.

In addition, the first supporting surface protruding from the reference surface to a certain height to form the protrusion, and the second supporting surface which is recessed to a certain height from the reference surface to form the concave part are formed at an angle greater than or equal to an acute angle formed by the boundary surface. To do.

In addition, the first support surface and the second support surface are characterized by forming an acute angle with respect to each of the protruding surface and the concave surface in a direction opposite to the boundary surface.

The concave surface that forms a locking protrusion or a locking groove in a portion of the protrusion surface facing the concave portion relative to the reference position in the middle portion of the container in the vertical direction of the boundary surface, and the concave surface facing the protrusion portion based on the reference position It characterized in that it is formed by forming a locking groove or a locking projection corresponding to each of the locking projection or the locking groove in the portion.

The shape and volume of the inside of the concave portion is characterized in that the shape and size of the protruding portion are positioned opposite to each other to be fitted.

The lower portion of the opening including the coupling portion is characterized in that it is integrally blow-molded in a set thickness range.

According to the above-described configuration of the present invention, the containers formed by blow molding having the same shape with each other are fitted or separated in a vertical sliding manner in a state in which the coupling portions are aligned with each other, thereby manufacturing is made through a single-shaped mold. Not only is it easy to reduce cost and selectively combine different contents, but it is also easy to manage the container by a single shape. In addition, it is possible to prevent shaking of the contents even when the opening of the container is open in the process of assembling or disengaging the container, reducing the possibility of discharging the contents, and sliding the stopper upwards to engage or disengage the stopper. It has the effect of easy opening and closing of the stopper.

1 is a perspective view schematically showing the configuration of a couple container according to an embodiment of the present invention.

2 is a schematic plan view schematic diagram for explaining the configuration of the coupling portion of FIG. 1.

3A to 3C are planar diagrams illustrating a process of coupling portions facing each other in a horizontal direction.

4A to 4C are schematic cross-sectional views for explaining the structure and operation of a mold for manufacturing a container including a coupling part of FIG. 1.

5 is a perspective view schematically showing a modified example of the present invention and a coupling relationship according thereto.

6 is a partially cut-away perspective view schematically showing the arrangement of the locking protrusion and the locking groove.

7 is a perspective view showing the coupling relationship between the couple containers according to the prior art.

8 is a cross-sectional plan view of an intermediate position of FIG. 7.

The present invention is in the best form, in the shape of a container with an opening formed on the upper side, protruding from at least one of the side surfaces while forming a step from the reference plane on one side based on a reference position set in the horizontal direction with respect to the vertical direction of the container. A protrusion having a protruding surface is formed, and a concave portion having a concave surface formed by a step from the reference surface on the other side of the reference position is formed, and an end of the protruding portion adjacent to the concave portion is formed at the reference position. The protrusion extends by a first interval set toward the protrusion, and an end of the concave portion adjacent to the protrusion has a shape that extends from the reference position by a second interval set toward the protrusion, and the end of the protrusion toward the concave portion and the protrusion The boundary surface connecting the end of the concave portion facing toward is formed at an acute angle with respect to each of the protrusion and the concave with respect to the reference position, and the shape of each portion constituting the reference surface, the protrusion and the concave portion is continuous in the vertical direction of the container. In a couple container comprising a formed coupling portion,

The protrusion further forms a deformation inducing groove formed concavely extending in the vertical direction from the protruding surface at an intermediate portion in the horizontal direction with respect to the vertical direction of the container or a deformation inducing protrusion formed convexly extending in the vertical direction from the concave surface, , The concave portion proposes a couple container, characterized in that the deformation inducing groove or the deformation inducing protrusions positioned opposite to each other form a deformation inducing protrusion or a deformation inducing groove to correspond to each other.

The terms or words used in the specification and claims are not to be construed as being limited to their usual or dictionary meanings, but'inventors should appropriately define the concept of terms in order to explain their own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle of'can be'.

In addition, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so at the time of the present application, these can be replaced. It is to be understood that there may be a variety of equivalents and variations that may exist.

On the other hand, in describing the present invention, the expression on the upper side refers to a portion of each component in the direction opposite or in the direction of the center of the earth, and the expression on the lower side refers to the direction of the center of the earth or a portion of each component in that direction. It will be referred to, and the description will be made based on that the opening of the container is on the upper side.

In addition, in describing the present invention, the expression on one side refers to a portion in one direction or a portion in the horizontal direction based on the horizontal center of one surface forming the coupling part in the container so that the opening is on the upper side, and the other side The expression will be described as referring to a portion in the other direction or in the direction based on the center of the horizontal direction on one side.

And in the description of the present invention, the expression on the inside shall refer to the inner center direction of the container or a portion in that direction, and the outer side shall refer to a portion in the direction opposite or in the direction of the inner side. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the couple container 10 according to the present invention is a parison (preform) called a preform having an opening (screw part) by an injection molding machine, as in a general polyethylene terephthalate (PET) bottle. parison) is put into a mold made in a desired shape, heated to a set temperature, and then produced by blow molding in which compressed air is blown.

In addition, the couple container 10 is based on a state in which the opening is on the upper side so that there is no leakage of the contents while the stopper 14 is opened.

The couple container 10 made by such blow molding is, for example, in the plane direction of the reference surface F as shown in FIG. 2 when at least one of the plurality of side surfaces is the reference surface F. The first support surface (a) is protruded from the reference surface (F) at a predetermined height on one side (A), for example, on the left side of the side, with the reference position CP set in the horizontal direction with respect to the vertical direction of 10), A protrusion 16 including a protrusion surface PF that is convexly stepped with respect to the reference surface F is formed. Here, the vertical direction of the couple container 10 refers to a vertical direction from the bottom surface of the couple container 10 to the opening 12. In addition, the horizontal direction with respect to the vertical direction of the couple container 10 refers to a direction forming a right angle to the vertical direction of the couple container 10.

In addition, a second support surface (b) is formed to be recessed at a certain height from the reference surface (F) on the other side (B) around the reference position (CP), for example, on the right side of the side surface, and steps are concave with respect to the reference surface (F). A concave portion 18 including a concave surface CF constituting a is formed.

Here, the reference position CP is located in the center of the horizontal direction with respect to, for example, the vertical direction of the couple container 10 in the plane direction of the reference surface F, and is continuously located in the vertical direction of the couple container 10. desirable.

In this way, positioning the reference position (CP) in the center of the side, as described later, when combined with the relative couple container 10 having an opposite shape around the reference position (CP), the couple container to be coupled It is to ensure that the edges of both sides of the (10) are not misaligned with each other. Meanwhile, the reference position CP is not limited thereto and may not necessarily be located at the center of the side surface.

In addition, as shown in FIG. 2, the protrusion 16 described above has an end adjacent to the concave part 18 of the protrusion surface PF set toward the concave part 18 based on the reference position CP. It has a shape that protrudes and extends by 1 interval (d).

And the above-described concave portion 18, the end of the concave surface (CF) adjacent to the protrusion 16 is recessed and extended by a second interval (d') set toward the protruding portion 16 based on the reference position (CP). Form.

In this way, when the protruding surface PF and the concave surface CF face the above-described reference surface F in the front, the first and second intervals d, extending from each other with respect to the reference position CP d') is formed alternately.

Here, it is preferable that the above-described second interval (d') has a shape (d<d') that is recessed and extended to a larger size than the first interval (d). Accordingly, a condition for forming the buffer unit S is achieved in order to combine the two couple containers 10 facing each other and coupled to each other in the horizontal direction.

In addition, the portion of the above-described concave portion 18 that extends from the reference position CP to the protrusion 16 is in the direction of one side (A) with respect to the protrusion 16 of the mating couple container 10 to be coupled to each other. It is preferable to have a more depth in the depth direction to form a buffer portion S forming a space between the protruding portion 16 of the mating couple container 10.

Accordingly, the boundary surface BW connecting the end facing the concave portion 18 of the protruding surface PF and the end facing the protruding portion 16 of the concave surface CF is a protruding surface based on the reference position CP. The (PF) and the concave (CF) form an oblique angle, and the oblique angle is within the range of the acute angle.

In addition, the volume range formed by the concave portion 18 based on the reference surface F and the reference position CP described above is made to be in a range equal to or greater than the volume of the protrusion 16 under the same condition, and the protrusion surface PF is It is desirable to design it so that it is not loose in a state in contact with the concave surface CF, that is, within the range of the previously set interval.

In addition, the first support surface (a) and the second support surface (b) described above are within an angle range perpendicular to the acute angle formed by the boundary surface BW for each of the protruding surface PF and the concave surface CF. It is desirable to do it. The direction of the acute angle formed by the first supporting surface (a) and the second supporting surface (b) can be formed to be opposite to the acute angle formed by the boundary surface (BW) for each of the protruding surface (PF) and the concave surface (CF). have.

In this way, limiting the angle formed by the first support surface (a) and the second support surface (b) is the force to deviate in the vertical direction with respect to the reference surface (F) in a state in which the couple containers 10 facing each other are combined. In order to prevent each other's protrusions 16 from coming out from the concave part 18, the first support surface (a) and the second support surface (b) are in contact with each other and through the boundary surface (BW) there is a locking action. to be.

That is, as shown in FIG. 3C, the concave portion 18 has a wide width in the depth direction and a narrow width in the opposite direction so that it is difficult to escape into a space where the structure of the same shape is narrow. It is for sake.

In addition, forming the acute angle formed by the first support surface (a) and the second support surface (b) to be greater than the acute angle formed by the boundary surface (BW) is to receive the force of the elastic part upon extraction from a mold to be described later. This is to allow natural deformation and extraction by the operation of the push unit.

As discussed above, the reference surface (F), the first and second support surfaces (a, b), the protruding surface (PF), the concave surface (CF), and the boundary surface (BW) constituting one side of the couple container 10 are One coupling part 20 is formed, and this coupling part 20 forms a shape that is continuous in the vertical direction of the couple container 10 with respect to the side surface of the couple container 10.

That is, the configuration of the above-described coupling part 20 is such that the coupling or disengagement of the coupling container 10 made of blow molding facing each other is made to slide with each other in the vertical direction. It was made difficult to bond and release the bond with respect to the direction.

In addition, in the above-described boundary surface BW, as shown in FIG. 6, a protrusion 22 at the protruding surface PF portion facing the concave portion 18 with respect to the reference position CP in the vertical middle portion. Alternatively, a locking groove corresponding to each of the locking protrusions 22 or the locking grooves 24 is formed in the concave surface CF toward the protrusion 16 based on the reference position CP It is preferable to form (24) or the locking protrusion (22).

That is, these locking protrusions 22 and locking grooves 24 are formed in parallel on the boundary surface BW of the same height of the couple container 10, as shown in FIG. 6, and the couple containers 10 are When mutually coupled, the locking protrusion 22 of the couple container 10 on one side is fitted into the locking groove 24 of the couple container 10 on the other side, so that the couple containers 10 are aligned parallel to each other at the same height. do.

And these locking protrusions 22 and locking grooves 24 are more than a set force acting in the vertical direction of the couple container 10 in order to engage or release the coupling in the vertical direction of the couple container 10 facing each other. In sliding movement against the force, the protrusion 16 protruding from the reference position CP relative to the reference position CP with respect to the space formed by the buffer unit S described above is deformed and the original shape It is desirable to create a tight feeling with respect to the boundary surface (BW) by an elastic action to return to.

In addition, the above-described locking protrusion 22 and the locking groove 24 may be formed in a plurality in the vertical direction of the couple container 10 on the boundary surface BW.

In addition, the protrusion 16 described above is concave from the protruding surface PF at an intermediate portion in the transverse direction with respect to the vertical direction of the couple container 10, as shown in FIG. A deformation inducing groove 26 extending in the direction may be further formed. In addition, the concave portion 18 is convex from the concave surface CF, and a deformation inducing protrusion 28 extending in the vertical direction of the couple container 10 may be further formed.

These deformation induction grooves 26, as shown in Figs. 3a to 3c and 6, are intended to enable coupling of the couple containers 10 made by blow molding to each other in a horizontal direction other than the vertical sliding method. .

First, referring to FIG. 3A, the front portion of the protrusion 16 is formed wider than the entrance of the concave portion 18 at the corresponding reference surface F, so that the protrusion 16 and the protrusion 16 facing each other are They come into contact with each other slightly off.

FIG. 3B shows that when the couple container 10 located on the upper side of FIG. 3A is in a stopped state, the couple container 10 located below receives a force in the direction of the arrow F1, or the couple container located on the upper side. When (10) slowly moves in the direction of the arrow (F2), the couple container (10) located below moves faster than the arrow (F2) in the direction of the arrow (F3) and receives the force to press the couple container (10) to face each other. It represents the deformation relationship of the protrusions 16 close to each other according to.

From this action, the portion of each protrusion 16 in the direction of the reference position CP with respect to the deformation inducing groove 26 is induced to be deformed by the angle of the boundary surface BW in contact with each other, as shown in FIG. 3B. It is transformed in the direction of the arrow (f1, f1') with the groove 26 as the center, and the transformation is until the moment the position of the first support surface (a) exceeds the boundary position of the second support surface (b), that is, the couple container Continue until the moment when the (10) moves between each other by 1/2 distance (d").

At this time, the above-described buffer unit (S) is to secure the space so as not to interfere with the deformation of the protrusion 16 based on the deformation inducing groove (26).

And, as the couple vessels 10 facing each other are referred to in FIG. 3C, the concave portion 18 corresponding to the above-described deformation inducing groove 26 has a deformation inducing protrusion having a shape protruding from the concave surface CF. 28) can be formed.

Here, the deformation inducing protrusion 28 formed in the concave portion 18 is a coupling container 10 formed opposite to the function of the deformation inducing groove 26 formed in the protruding portion 16 in a horizontal direction, for example, a couple It functions to support the first and second supporting surfaces (a, b) to keep in contact with each other when they are to be spread out in the horizontal direction with respect to the vertical direction of the container 10.

In addition, the above-described deformation inducing groove 26 and the deformation inducing protrusion 28, although not shown in the drawing, are in opposite directions, that is, protruding in phase with respect to the protruding surface PF and the concave surface CF where each is located. It may be formed by forming the deformation inducing protrusion 28 with respect to the surface PF and forming the deformation inducing groove 26 with respect to the concave surface CF.

The deformation induction protrusion 28 and the deformation induction groove 26 formed in the opposite phase to the deformation induction groove 26 and the deformation induction protrusion 28 described above are the deformation induction grooves shown in FIGS. 3A to 3C. It is predictable that the function of the same category as (26) and the deformable protrusion (28) can be performed.

The reason for forming the deformation inducing groove 26 and the deformation inducing protrusion 28 in this way is that a beverage is injected into each of the couple containers 10 made by blow molding, and a couple container made by blow molding ( This is to be done automatically in the process of supplying by combining 10).

That is, to combine the couple containers 10 only in the vertical direction, there is an unreasonable problem such as delay due to the combination with space in the manufacturing process including the injection of beverages, and difficulty in manufacturing equipment for the combination.

Therefore, to be able to be combined in the horizontal direction as above is for the convenience of injecting the beverage and continuing the process.

On the other hand, FIGS. 4A to 4C are for explaining the manufacturing process of the couple container 10 made by blow molding, and the process will be described.

First, FIG. 4A shows a state in which a parison is installed inside the mold before the mold is molded.

At this time, the sliding core for forming the boundary surface BW and the buffer unit S is placed in a state retracted from the molding position of the couple container 10 made by blow molding to a position without interference.

Thereafter, FIG. 4B is a state in which the molds are molded, and the push parts of the parts that contact each other are pushed against the elasticity of the elasticity parts to move the sliding core to the molding position. , In this state, pneumatic pressure is injected into the parison to show the state in which the mold and the sliding core are formed.

And Figure 4c is a state in which the manufacturing of the couple container 10 made by blow molding through a cooling process after molding is completed, and when the mold is opened, the push part first moves to the original position by the elastic part, and the sliding core is moved to the molding position. It retreats from and moves to a position where the locking action for the couple container 10 made by blow molding is released.

At this time, the undercut action on the first and second support surfaces (a, b) described above is preferably designed in a range of acute angles that can be easily separated by the operating force according to the moving displacement of the push unit moving by the elastic unit. Do.

In addition, the above-described sliding core, as an acute angle smaller than the acute angle formed by the first and second supporting surfaces (a, b) is required, so that a faster retreat is made with respect to the moving displacement of the push unit moved by the elastic unit. It is desirable to do it.

In addition, the shape of the boundary surface BW described above is preferably formed in a wave shape based on the reference position CP, as shown in FIG. 3A corresponding to the retraction speed and position of the sliding core.

Meanwhile, in FIG. 5, as a modified example of the couple container according to the present invention, a couple container having a protruding portion and a concave portion formed on four sides thereof is shown.

Accordingly, a plurality of couple containers 10 can be combined in various forms.

As described above, according to the present invention, the containers formed by blow molding having the same shape with each other are fitted or separated in a vertical sliding manner in a state in which the coupling portions are aligned with each other, so that the production is made through a single-shaped mold, thereby manufacturing cost Not only is it easy to reduce the amount and selectively combine different contents, but also manages the container by a single shape. In addition, it is possible to prevent shaking of the contents even when the opening of the container is open in the process of assembling or disengaging the container, reducing the possibility of discharging the contents, and sliding the stopper upwards to engage or disengage the stopper. It has the effect of easy opening and closing of the stopper.

In the above, embodiments of the present invention have been described with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You can understand. Therefore, the embodiments described above are illustrative in all respects, and should be understood as non-limiting.

Claims

In the shape of a container with an opening formed on the upper side, a protrusion having a protruding surface that is stepped from the reference plane on one side based on a reference position set in the horizontal direction with respect to the vertical direction of the container on at least one of the side surfaces is formed, and , Forming a concave portion having a concave surface that is stepped from the reference surface on the other side with respect to the reference position, and the end of the protruding portion adjacent to the concave portion protrudes from the reference position toward the concave portion by a first interval. And, the end of the concave portion adjacent to the protrusion has a shape extending from the reference position by a second interval set toward the protrusion, and an end of the protrusion facing the concave portion and an end of the concave portion facing the protrusion are connected In a couple container including a coupling portion in which the boundary surface is formed at an acute angle with respect to each of the protrusions and the concave portions around the reference position, and the shape of each portion forming the reference surface, the protrusions and the concave portions is continuously formed in the vertical direction of the container In,

The protrusion further forms a deformation inducing groove formed concavely extending in the vertical direction from the protruding surface at an intermediate portion in the horizontal direction with respect to the vertical direction of the container or a deformation inducing protrusion formed convexly extending in the vertical direction from the concave surface, And wherein the concave portion is formed by further forming a deformation inducing protrusion or a deformation inducing groove in which the deformation inducing grooves or deformation inducing protrusions positioned opposite to each other corresponding to each other are formed.
The method of claim 1,

The first supporting surface protruding from the reference surface to a certain height to form the protrusion, and the second supporting surface which is depressed to a certain height from the reference surface to form the concave part are formed at an angle greater than or equal to an acute angle formed by the boundary surface. Couple courage.
The method of claim 2,

The first support surface and the second support surface form an acute angle in a direction opposite to the boundary surface with respect to each of the protruding surface and the concave surface.
The method of claim 1,

The concave surface that forms a locking protrusion or a locking groove in a portion of the protrusion surface facing the concave portion relative to the reference position in the middle portion of the container in the vertical direction of the boundary surface, and the concave surface facing the protrusion portion based on the reference position Coupled container, characterized in that formed by forming a locking groove or a locking projection corresponding to each of the locking projection or the locking groove in the portion.
The method of claim 1,

A couple container, characterized in that the shape and the volume of the inside of the concave portion are opposite to each other and have a shape and size equal to or larger than the outer shape of the protrusion.
The method of claim 1,

A couple container, characterized in that the lower portion of the opening including the coupling portion is blow-molded integrally with a set thickness range.