CN115003604A

CN115003604A - Lovers' container

Info

Publication number: CN115003604A
Application number: CN202080064533.XA
Authority: CN
Inventors: 成甫渊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-15
Filing date: 2020-07-14
Publication date: 2022-09-02
Anticipated expiration: 2040-07-14
Also published as: JP2022542654A; WO2021010729A1; CN115003604B; CN112224606A

Abstract

The present invention relates to a lover container, which is capable of reducing manufacturing cost, easily selectively combining contents, reducing possibility of leakage of the contents, and easily opening and closing a bottle cap by combining, by combining or separating 2 or more containers having the same shape with each other by combining mutually facing combining parts.

Description

Lovers' container

Technical Field

The present invention relates to a container for lovers, and more particularly, to a container for lovers, in which more than 2 containers facing each other can be coupled or separated from each other.

Background

Generally, containers made of plastic materials such as polyethylene terephthalate (PET), Polyacrylonitrile (PAN), polyvinyl chloride (PVC), and polypropylene (PP) are widely used for storing or storing various beverages such as soft drinks, mineral water, tea, and wine or powdered contents therein, and the contents are easily taken out as needed.

In such a container, the inside thereof is partitioned so as to be able to contain the contents, an opening for accessing the contents is formed substantially in a partial region of the upper portion, and a cap for restricting access to the contents is provided in the opening.

When the content to be contained is liquid, the container generally contains one type of content, and the user sometimes drinks the content by placing an opening in the open opening.

As described above, one container is generally used one-to-one for each user, and the kinds of liquid contents are also limited to one.

For example, when 2 or more kinds of beverages are to be stored, containers corresponding to the respective beverages are prepared, but since the containers are separated from each other, there is a problem that it is difficult to store or carry the beverages.

In addition, no matter one person drinks the beverage in one container or 2 or more persons share the beverage, one container can only contain one beverage, so that when 2 persons with different beverage tastes respectively want to drink the beverage a bit by bit, the container containing the beverage which the person wants to drink must be purchased.

Further, there is a problem that it is difficult to keep the container for a long time after the container is opened in a state where the contents in the container are not consumed, and resources are wasted by discarding the remaining contents.

For the above reasons, the related industries have developed a couple container that combines 2 containers into one set so that more than 2 users can separately drink in a sanitary and convenient manner or drink beverages in a combined container according to preference.

In the prior art, korean laid-open patent No. 10-2013-0108796 (hereinafter, referred to as "prior art 1") and korean granted patent No. 10-1022665 (hereinafter, referred to as "prior art 2") disclose that a protruding type bonding portion is formed at one of bonding surfaces facing each other, and a recessed type bonding portion corresponding to the protruding type bonding portion is formed at the other bonding surface, and bonding and separation can be performed by an insertion form of a concavo-convex structure.

In the pair of containers disclosed in the prior art 1, a protruding type joint portion is formed in the side wall of one of the containers, and a recessed type joint portion is formed in the other container. Thus, when the containers are coupled, the protruding coupling portion of one container is inserted into the recessed portion of the other container, and the containers are coupled by relative rotation in this state.

The related art 1 is a case where the containers are coupled or separated in a state where the respective openings of each container are covered with the cap, and when the containers are coupled or separated in a state where the cap is opened, there is a possibility that the contents contained in the containers may leak through the inclined openings. That is, when the lover's container is combined or separated according to the prior art, the inconvenience of having to be performed in a state of covering the bottle cap should be taken into consideration.

Further, in the conventional art 1, it is necessary to manufacture not only the container having the protruding type coupling portion and the container having the recessed type coupling portion, respectively, but also different types from each other to be used as the lover's container, and therefore, there are complicated problems and difficulties in managing the respective types.

In addition, in an embodiment of prior art 2, a single-form container is manufactured in which a protruding type joint portion is formed at a position eccentric to one side from a lateral center in a vertical direction of the container and a recessed type joint portion is formed at a position core on the other side from the lateral center in the vertical direction of the container, and when 2 containers are arranged to face each other, the opposing protruding type joint portion is inserted into the recessed type joint portion or separated from the recessed type joint portion in a forced insertion manner.

In the above-mentioned prior art 2, when 2 containers are coupled or separated, the contents in the containers are instantaneously tilted to one side (yaw movement) by the force and movement of the coupling pressure or more in the coupling direction, and in this case, in a state where the opened cap is opened, the contents may leak in the coupling or separating movement.

Korean laid-open patent No. 10-2013-0107126 (hereinafter, referred to as 'prior art 3') discloses a prior art for preventing leakage of contents from the shaking motion.

As can be seen from fig. 7 and 8, in the above-mentioned prior art 3, the mode of coupling or separating 2 couple containers 1 is realized by the track protrusion 2 and the track groove portion 3 formed on the side wall of the container 1 toward the opening forming direction on the upper side of the container 1, and an effect of reducing the rocking motion of the liquid contents corresponding to the positional shift of the container 1 at the time of coupling or separating can be expected.

However, since the prior art 3 is manufactured by an injection molding method, the shape of the opening can be formed only in the same shape as the horizontal cross section of the inside.

Here, most beverage containers are formed by blow molding, and the shape of the container formed by blow molding is formed in a state in which the upper side portion except for the opening portion is covered with a thickness range substantially equal to that of the side wall, and the thickness range depends on the size of the container and the thickness and form of the parison. The thickness of the container thus manufactured may vary depending on the shape at each portion, but the shape and thickness of the parison are within predetermined ranges.

Disclosure of Invention

The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a lover container which reduces manufacturing costs, facilitates selective combination of contents, reduces the possibility of leakage of the contents, and facilitates opening and closing of a bottle cap by coupling, by coupling or separating 2 or more containers having the same shape with each other by coupling portions facing each other.

Another object of the present invention is to provide a lover's container manufactured by blow molding, in which the sidewall portions are maintained at the same level of thickness and coupled to the same coupling portions facing each other, thereby simplifying the mold and reducing the manufacturing cost and the product management cost.

In order to achieve the above object, a lover's receptacle according to the present invention is a receptacle shape having an opening formed at an upper side thereof, and includes a coupling portion having a protruding portion formed at one side thereof with respect to a reference position provided in a horizontal direction with respect to a vertical direction of the receptacle on at least one reference surface of side surfaces, the protruding portion protruding from the reference surface to form a step and being formed with respect to the reference position, and a recessed portion formed at the other side thereof with respect to a recessed surface recessed from the reference surface to form a step and having a first interval predetermined by protruding an end of the protruding portion adjacent to the recessed portion from the reference position to the recessed portion, an end of the recessed portion adjacent to the protruding portion being recessed from the reference position to the protruding portion to form a second interval predetermined by extending a second interval, and a boundary connecting an end of the protruding portion facing the recessed portion and an end of the recessed portion facing the protruding portion to the recessed portion is connected to a boundary between the reference position and the end of the recessed portion facing the protruding portion The surface is formed at an acute angle with respect to the protruding portion and the recessed portion with respect to the reference position, and shapes of respective portions forming the reference surface and the protruding portion and the recessed portion are continuously formed in a vertical direction of the container, wherein the protruding portion is further formed with a deformation guide groove or a deformation guide protrusion which is formed to be extended from the protruding surface toward the vertical direction at a middle portion in a lateral direction with respect to the vertical direction of the container, the deformation guide protrusion is formed to be extended to be projected toward the vertical direction from the recessed surface, and the recessed portion is further formed with a deformation guide protrusion or a deformation guide groove which is inserted into each other in correspondence with the deformation guide groove or the deformation guide protrusion formed to be opposed thereto.

The first support surface that protrudes from the reference surface by a predetermined height to form the protruding portion and the second support surface that is recessed from the reference surface by a predetermined height to form the recessed portion form an angle equal to or larger than an acute angle formed by the boundary surface.

Also, the first and second support faces form acute angles opposite to the boundary face with respect to each of the protruding face and the recessed face.

Further, in the boundary surface, a locking protrusion or a locking groove is formed toward the protruding surface portion of the recessed portion with respect to the reference position at an intermediate portion in the vertical direction of the container, and a locking groove or a locking protrusion corresponding to the locking protrusion or the locking groove is formed toward the recessed surface portion of the protruding portion with respect to the reference position.

The shape and volume of the inner part of the concave part are formed by the shape and size which are more than the shape of the protruding part which is relatively inserted.

The lower part of the opening including the combining part is formed into a whole by blow molding within a preset thickness range.

According to the structure of the present invention, the containers having the same shape and manufactured by blow molding are inserted, connected, or separated in a manner of sliding up and down in a state of being aligned and connected with each other, and are manufactured by a mold having a single shape, so that the manufacturing cost can be saved, the containers can be selectively combined with other contents, and the containers can be easily managed because of the single shape. In addition, in the process of combining or separating the containers, the shaking of the contents can be prevented even in the state that the opening of the container is opened, thereby reducing the content spurting caused by the shaking, and the bottle cap can be combined or separated by sliding one of the containers to the upper side, thereby having the effect of easily opening and closing the bottle cap.

Drawings

FIG. 1 is a schematic view of the structure of a couple container according to an embodiment of the invention;

fig. 2 is a plan state system diagram illustrating a joint structure for explaining fig. 1;

fig. 3a to 3c are plan state system diagrams for explaining a process of bonding the bonding parts facing each other to each other in a horizontal direction;

fig. 4a to 4c are sectional views showing the structure and action of a mold for manufacturing a container including the coupling part of fig. 1;

fig. 5 is a perspective view showing a modification of the present invention and a coupling relationship of the modification;

fig. 6 is a perspective view showing a cut-out for explaining the arrangement of the locking projection and the locking groove.

FIG. 7 is a perspective view showing the coupling relationship between lover's containers according to the prior art;

fig. 8 is a sectional view in a planar state showing an intermediate position of fig. 7.

Detailed Description

The present invention provides, as a preferred aspect, a lover's receptacle having a receptacle shape with an opening formed on an upper side thereof, and including a coupling portion having a protruding portion formed on one side thereof with respect to a reference position provided in a horizontal direction with respect to a vertical direction of the receptacle on at least one reference surface of side surfaces, the protruding portion protruding from the reference surface to form a step, and a recessed portion formed on the other side thereof with respect to the reference position and having a recessed surface recessed from the reference surface to form a step, an end of the protruding portion adjacent to the recessed portion protruding from the reference position to the recessed portion being extended by a predetermined first interval, an end of the recessed portion adjacent to the protruding portion being extended from the reference position to the protruding portion being recessed by a predetermined second interval, and a shape connecting an end of the protruding portion facing the recessed portion and an end of the recessed portion facing the protruding portion to the recessed portion being extended from the reference position to the protruding portion by a predetermined second interval, wherein the end of the recessed portion facing the protruding portion is connected to the recessed portion The boundary surface of (a) is formed at an acute angle with respect to the projecting portion and the recessed portion with respect to the reference position as a center, and shapes of respective portions forming the reference surface and the projecting portion and the recessed portion are continuously formed in the vertical direction of the container, wherein the projecting portion is further formed with a deformation guide groove or a deformation guide projection which is formed to extend from the projecting surface to be recessed in the vertical direction at a middle portion in the horizontal direction with respect to the vertical direction of the container, the deformation guide projection is formed to extend from the recessed surface to be projected in the vertical direction, and the recessed portion is further formed with a deformation guide projection or a deformation guide groove which is inserted into each other in correspondence with the deformation guide groove or the deformation guide projection formed to be opposed to each other.

The terms or words used in the present specification and claims should not be interpreted as limited to general or dictionary meanings, but interpreted as meanings and concepts conforming to the technical idea of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way.

It should be noted that the embodiments and configurations shown in the drawings described in the specification of the present invention are merely preferred embodiments of the present invention and do not represent all technical ideas of the present invention, and therefore, it should be understood that various equivalents and modifications may be substituted for the present invention at the time of applying the present invention.

In describing the present invention, the upper expression means a portion of each component located in the opposite direction to the center of the earth or in the direction thereof, and the lower expression means a portion of each component located in the center of the earth or in the direction thereof, and thus, the description will be made with the opening of the container located on the upper side.

In the description of the present invention, the expression on one side means a portion in any direction or direction with respect to the horizontal direction center of the surface on which the coupling portion is formed in the container having the opening on the upper side, and the expression on the other side means a portion in the other direction or direction with respect to the horizontal direction center of the surface.

In describing the present invention, the expression "inside" means a portion in the direction of the center of the interior of the container or in the direction thereof, and the expression "outside" means a portion in the direction opposite to the inside or in the direction thereof.

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

The lover container 10 according to the present invention, as shown in fig. 1, is manufactured by blow molding, in which a parison (parison) having an opening (screw portion) and called a preform (preform) is placed in a mold having a desired shape, which is molded by an injection molding machine, heated at a predetermined temperature, and then blown with compressed air, like a polyethylene terephthalate (PET) bottle.

The lover container 10 is configured such that the opening is positioned on the upper side to prevent the contents from flowing out when the bottle cap 14 is opened.

In the lover's container 10 manufactured by blow molding as described above, when at least one of the plurality of side surfaces is taken as a reference surface F, as shown in fig. 2, a first support surface a protruding from the reference surface F by a predetermined height is formed on one side a, for example, on the left side of the side surface, with a reference position CP provided in the plane direction of the reference surface F, for example, in the lateral direction with respect to the vertical direction of the lover's container 10 as the center, and a protruding portion 16 having a protruding surface PF having a protruding step with respect to the reference surface F is formed. Here, the vertical direction of the lover's container 10 means a vertical direction from the bottom surface of the lover's container 10 to the opening 12. The lateral direction with respect to the vertical direction of the lover's container 10 means a direction perpendicular to the vertical direction of the lover's container 10.

Further, a second support surface B recessed from the reference surface F by a predetermined height is formed on the other side B centered on the reference position CP, for example, the right side of the side surface, and a recessed portion 18 having a recessed surface CF having a recessed step with respect to the reference surface F is formed.

Here, the reference plane CP is preferably formed continuously in the up-down direction of the lover's container while being located in the plane direction of the reference plane F, for example, at the center in the lateral direction with respect to the up-down direction of the lover's container 10.

The reason why the reference position CP is located at the center of the side surface is that, when the lover containers 10 having the opposite shape are coupled around the reference position CP as described later, the coupled two side edges of the lover containers 10 are not displaced and are well coupled. On the one hand, the reference position 10 is not limited to this, and may not be in the lateral center.

As shown in fig. 2, the protrusion 16 protrudes toward the recess 18 at an end of the protrusion face PF adjacent to the recess 18 with respect to the reference position CP to extend a predetermined first distance d.

The recess 18 is formed by recessing and extending the second distance d' toward the protrusion 16 with respect to the reference position CP at the end adjacent to the protrusion 16 on the recess surface CF.

In this way, when the reference surface F is viewed from the front, the protruding surface PF and the recessed surface CF are shifted from each other by the first interval d and the second interval d' extending from the reference position CP, respectively.

Here, preferably, the second spaces d 'have a deeper form (d < d') than the first spaces d are depressed. This form forms the forming condition of the buffer portion S so that 2 couple containers 10 facing each other are coupled to each other in the horizontal direction.

Furthermore, it is preferable that the part of the recessed part 18 extending recessed from the reference position CP toward the protruding part 16 has a depth in the direction of the one side A and the depth direction with respect to the protruding part 16 of the opposite-side lover 'S container 10 coupled to face each other, so that a buffer part S is formed which forms a space with the protruding part 16 of the opposite-side lover' S container 10.

Thus, the boundary surface BW connecting the end of the protruding surface PF facing the recessed portion 18 and the end of the recessed surface CF facing the protruding portion 16 forms an offset angle with respect to the protruding surface PF and the recessed surface CF about the reference position CP, and the offset angle is in an acute angle range.

Further, it is preferable that the volume range of the depressed portion 18 is set to a range equal to or larger than the volume of the protruding portion 16 under the same condition, and is set to a predetermined interval range, which is a state in which the protruding surface PF and the depressed surface CF are not loosened in a state in which they are butted against each other, with the reference surface F and the reference position CP as a boundary.

Preferably, the first support surface a and the second support surface b are within a range of angles that are right angles or more to the acute angle that the environmental interface BW makes with respect to the protruding surface PF and the recessed surface CF, respectively. The direction of the acute angle formed by the first support surface a and the second support surface b may be in the opposite direction of the acute angle formed by the ambient interface BW with respect to the protruding surface PF and the recessed surface CF, respectively.

The reason why the angle formed by the first supporting surface a and the second supporting surface b is defined as described above is that the protruding portion 16 is prevented from being detached from the recessed portion 18 by a force of detaching in the vertical direction from the reference surface F in a state in which the lover's containers 10 facing each other are coupled by the boundary surface BW being locked to each other in a state in which the first supporting surface a and the second supporting surface b are in contact with each other.

That is, as shown in fig. 3c, this is because the recessed portion 18 has a shape having a wide width in the depth direction and a narrow width in the opposite direction, and thus the structure of the same form is difficult to come out from a narrow space in the interior thereof.

The reason why the acute angle formed by the first support surface a and the second support surface b is equal to or more than the acute angle formed by the boundary surface BW is that the acute angle is removed while being naturally deformed by operating the pushing portion receiving the elastic force of the elastic portion when the mold is removed from the mold to be described later.

As described above, the reference surface F, the first support surface a, the second support surface b, the protruding surface PF, the recessed surface CF, and the boundary surface BW, which form one side surface of the lover's container 10, constitute one coupling portion 20, and the coupling portion 20 is continuously formed in the vertical direction of the lover's container 10 on the side surface of the lover's container 10.

That is, the coupling portions 20 are configured such that the coupling between the opposing couple containers 10, which are blow molded, is coupled or decoupled in the vertical direction so as to slide relative to each other, and the coupling and decoupling is difficult in the other directions.

Further, as shown in fig. 6, it is preferable that the locking protrusion 22 or the locking groove 24 is formed in a portion facing the projecting surface PF of the recessed portion 18 with respect to the reference position CP in the middle portion in the vertical direction of the boundary surface BW, and the locking groove 24 or the locking protrusion 22 corresponding to the locking protrusion 22 or the locking groove 24 is formed in a portion facing the recessed surface CF of the projecting portion 16 with respect to the reference position CP.

That is, as shown in FIG. 6, these locking protrusions 22 and locking grooves 24 are formed in parallel on the boundary surface BW of the lover's container 10 at the same height, and when the lover's container 10 is coupled, the locking protrusion 22 of the lover's container 10 is inserted into the locking groove 24 of the other lover's container 10, and functions to align the lover's containers 10 in parallel at the same height.

Further, in order to vertically couple or decouple the opposing couple containers 10, it is preferable that the locking projections 22 and the locking grooves 24 slide a force equal to or greater than a predetermined force acting in the vertical direction of the couple containers 10, and at this time, the space formed by the buffer S is bent and deformed toward the projecting portion 16 portion projecting from the opposing couple container 10 with respect to the reference position CP, and at the same time, a sense of tightness is given to the boundary surface BW by an elastic action to return to the original shape.

Further, a plurality of the locking protrusions 22 and the locking grooves 24 may be formed in the vertical direction of the lover container 10 on the boundary surface BW.

Furthermore, as shown in fig. 6, the protrusion 16 may further be formed with a deformation guiding groove 26 that is recessed from the protrusion surface PF at an intermediate portion in a lateral direction with respect to the vertical direction of the lover's receptacle 10 and is formed to extend in the vertical direction of the lover's receptacle 10. In addition, a deformation guide protrusion 28 is formed in the recess 18, and the deformation guide protrusion protrudes from the recess surface CF and is formed to extend in the vertical direction of the lover's container 10.

As is evident from FIGS. 3a to 3c and FIG. 6, the deformed guide grooves 26 are used for coupling the couple container 10, which is made by blow molding, to each other in the horizontal direction in addition to the up-and-down sliding manner.

First, referring to fig. 3a, since the front portion of the protruding portion 16 is formed wider than the entrance of the recessed portion 18 at the corresponding reference surface F, the protruding portion 16 and the protruding portion 16 facing each other are butted in a slightly shifted state.

FIG. 3b shows the deformation relationship of the adjacent protrusions 16 when the couple container 10 on the upper side in FIG. 3a is in a static state, and when the couple container 10 on the lower side is forced in the direction of arrow F1 or when the couple container 10 on the upper side is slowly moved in the direction of arrow F2, the couple container 10 on the lower side is moved faster than the arrow F2 in the direction of arrow F3, and a facing force is applied to the couple container 10.

As shown in fig. 3b, by the above-described operation, the portion of each protrusion 16 located in the direction of the reference position CP with respect to the deformation guide groove 26 is deformed in the directions of the arrows f1 and f 1' about the deformation guide groove 26 by the angle of the contact boundary surface BW, and this deformation continues until the instant when the position of the first supporting surface a exceeds the boundary position of the second supporting surface b, that is, until the couple containers 10 move from each other by the 1/2 interval (d ″).

At this time, the buffer S ensures a space so as not to be disturbed by the deformation of the protruding portion 16 with respect to the deformation guide groove 26.

As shown in fig. 3c, the lover's container 10 facing each other has a deformation guide protrusion 28 formed in a shape protruding from the concave surface CF in the concave portion 18 corresponding to the deformation guide groove 26.

Here, the function of the deformation guide protrusion 28 formed in the recess 18 is opposite to the function of the deformation guide groove 26 formed in the protrusion 16, and is used for keeping the first support surface a and the second support surface b in a state of contact when the coupled lover's container 10 is expanded in the horizontal direction, for example, in the lateral direction with respect to the vertical direction of the lover's container 10.

Although the deformation guide groove 26 and the deformation guide projection 28 are not shown, they may be formed on the projecting surface PF and the recessed surface CF in opposite phases, that is, the deformation guide projection 28 may be formed on the projecting surface PF and the deformation guide groove 26 may be formed on the recessed surface CF.

It is thus predicted that the deformation guide groove 26 and the deformation guide protrusion 28, which are formed in opposite phases to the deformation guide groove 26 and the deformation guide protrusion 28 described above, can perform the same function in the same category as the deformation guide groove 26 and the deformation guide protrusion 28 shown in fig. 3a to 3 c.

The deformation guide groove 26 and the deformation guide protrusion 28 are formed in this way because the joining and separating of the containers are automatically performed in the process of injecting the beverage into each of the couple's containers 10 made by blow molding and the process of joining and supplying the couple's containers 10 made by blow molding into which the beverage has been injected.

That is, the couple receptacle 10 is only coupled in the up-down direction, which is an unreasonable problem that there is a delay due to space and coupling in the manufacturing process including beverage injection, and it is difficult to manufacture a device for coupling, etc.

Therefore, as described above, the combination in the horizontal direction is because the injection of the beverage and the subsequent process are facilitated.

On the one hand, fig. 4a to 4c are used to illustrate the process of manufacturing a couple container 10 made by blow molding, which will be described below.

First, fig. 4a shows a state in which a parison is set inside before a mold is assembled.

At this time, the slide core (sliding core) for forming the boundary surface BW and the buffer portion S is in a state of having been retreated to a position where there is no interference in the molding position of the couple container 10 prepared by blow molding.

Fig. 4b shows a state in which the push part (push part) of the portion where the molds are in contact is pushed by the elastic force of the elastic part (elastic part) to move the slide core to the molding position after the molds are assembled, and in this state, the air pressure is injected to the parison to complete the molding by the molds and the slide core.

Fig. 4c shows a state where the couple container 10 is manufactured by blow molding through a cooling process after molding, and when the mold is opened, the pushing portion is moved to the original position by the elastic portion, and the slide core is retracted to the molding position, and moved to a position where the locking action to the couple container 10 manufactured by blow molding is released.

In this case, it is preferable that the undercut action on the first support surface a and the second support surface b is designed to have an acute angle range so that the operation force generated by the displacement of the pushing portion by the movement of the elastic portion can be easily separated.

Further, since an acute angle smaller than an acute angle formed by the first support surface a and the second support surface b is required, it is preferable that the slide core is more quickly moved and displaced back with respect to the pushing portion moved by the elastic portion.

Further, as shown in fig. 3a, the shape of the boundary surface BW is preferably formed in a waveform based on the reference position CP in accordance with the retreating speed and position of the slide core.

Fig. 5 shows a modification of the lover's container according to the present invention, in which a protrusion and a depression are formed on each of four side surfaces.

Thus, a plurality of lover containers 10 can be combined in various forms.

According to the present invention, since the containers having the same shape and manufactured by blow molding are inserted and coupled or separated in the up-down sliding manner in the state where the coupling portions are aligned with each other, and are manufactured by using a mold having a single shape, it is possible to selectively combine the containers with other contents with saving manufacturing cost, and the containers can be easily managed because of the single shape. In addition, in the process of combining or separating the containers, the shaking of the contents can be prevented even in the state that the opening of the container is opened, thereby reducing the content spurting caused by the shaking, and the bottle cap can be combined or separated by sliding one of the containers to the upper side, thereby having the effect of easily opening and closing the bottle cap.

Although the present invention has been described above with reference to the drawings, it should be understood that a person skilled in the art to which the present invention pertains may implement other specific embodiments without changing the technical idea or essential features of the present invention. The above-described embodiments are therefore illustrative in all respects, and not restrictive.

Claims

1. A lover container having a container shape with an opening formed at an upper side thereof, comprising a coupling portion having a protruding portion formed at one side thereof with respect to a reference position provided in a lateral direction of the container with respect to a vertical direction of the container on at least one reference surface of side surfaces, the protruding portion protruding from the reference surface to form a step and with respect to the reference position, and a recessed portion formed at the other side thereof with respect to a recessed surface recessed from the reference surface to form a step and having a first interval predetermined by extending an end portion of the protruding portion adjacent to the recessed portion from the reference position to the recessed portion, an end portion of the recessed portion adjacent to the protruding portion having a second interval predetermined by extending the end portion of the recessed portion from the reference position to the recessed portion, a boundary surface connecting an end portion of the protruding portion facing the recessed portion and an end portion of the recessed portion facing the protruding portion with respect to the reference position as a center, wherein the first interval is set at the reference position as a center Wherein the shape of each portion forming the reference surface and the protruding and recessed portions is continuously formed in the vertical direction of the container,

the protruding portion is further formed with a deformation guide groove or a deformation guide projection which is formed to extend from the protruding surface in a recessed manner in the vertical direction at a middle portion in the horizontal direction with respect to the vertical direction of the container, the deformation guide projection is formed to extend from the recessed surface in a protruding manner in the vertical direction, and the recessed portion is further formed with a deformation guide projection or a deformation guide groove which is inserted into each other in correspondence with the deformation guide groove or the deformation guide projection which is formed to face each other.

2. The lover's container according to claim 1, wherein a first support surface that protrudes from the reference surface by a predetermined height to form the protrusion and a second support surface that is recessed from the reference surface by a predetermined height to form the recess form an acute angle or more with respect to the boundary surface.

3. The couple container according to claim 2, wherein the first and second support surfaces form an acute angle opposite to the boundary surface with respect to each of the protruding and recessed surfaces.

4. The couple container according to claim 1, wherein a locking protrusion or a locking groove is formed toward the protruding surface portion of the recessed portion with respect to the reference position at an intermediate portion in the vertical direction of the container in the boundary surface, and a locking groove or a locking protrusion corresponding to the locking protrusion or the locking groove is formed toward the recessed surface portion of the protruding portion with respect to the reference position.

5. The couple container according to claim 1, wherein the shape and volume of the inside of the recess is made of a shape and size that are larger than the outer shape of the protrusion inserted into the recess.

6. The couple container according to claim 1, wherein the lower part of the opening including the coupling portion is blow molded integrally in a predetermined thickness range.