CN115003604A - Lovers' container - Google Patents

Abstract

The present invention relates to a container for lovers, which can reduce manufacturing costs, easily selectively combine contents, and reduce leakage of contents by combining or separating two or more containers of the same shape with joints facing each other. Possibility of opening and closing the cap easily by combining.

Description

couple container

technical field

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

Background technique

Generally, containers of polyethylene terephthalate (PET, polyethylene terephthalate), polyacrylonitrile (PAN, polyacrylonitrile), polyvinyl chloride (PVC, poly vinyl chloride), polypropylene (PP, polypropylene), etc. Blow-molded plastic materials are widely used to store or store the contents of various beverages or powder forms such as soft drinks, mineral water, tea, and wine in the interior, and to easily remove the contents as needed.

In this type of container, the interior of the container is divided so as to be able to accommodate the contents, and an opening for entering and exiting the contents is formed in a partial area of the upper portion, and a bottle cap for restricting the entry and exit of the contents is provided in the opening.

In addition, when the content contained in the container is liquid, the container generally accommodates one kind of content, and the user may also drink the content by placing the mouth on the open opening.

As described above, one container is usually used one-to-one for each user, and the kind of liquid content is also limited to one.

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

In addition, whether one person finishes drinking a drink in a container, or two or more people share a drink, a container can only hold one type of drink, so there are two people with different tastes who want to drink a little bit and want to drink it by themselves. You must purchase a container containing the beverage you want to drink.

In addition, in a state where the contents in the container have not been consumed, it is difficult to store for a long time once the container is opened, and there is a problem of waste of resources in which the remaining contents are finally thrown away.

For the above reasons, related industries have developed a set of lovers' containers that combine 2 containers into a set, so that 2 or more users can drink hygienically and conveniently separately, or choose a combined container for drinking according to their preferences. drinks inside.

Among the prior art, Korean Laid-Open Patent Publication No. 10-2013-0108796 (hereinafter, referred to as "Prior Art 1") and Korean Patent Publication No. 10-1022665 (hereinafter referred to as "Prior Art 2") ) discloses that a protruding joint is formed on one joint surface facing each other, and a concave joint corresponding to the protruding joint is formed on the other joint surface. Combine and separate.

In the paired containers disclosed in the prior art 1, a protruding joint is formed in the side wall of one container, and a concave joint is formed in the other container. Thus, when the containers are joined, the protruding joining portion of one container is inserted into the concave portion of the other container, and in this state, the joining is performed by relative rotation.

The above-mentioned prior art 1 is a case where the containers are combined or separated in a state where each opening of each container is covered with a bottle cap, and when the containers are combined or separated in a state where the bottle cap is opened, the storage in the container occurs. Possibility of leakage of contents through angled openings. That is, when combining or separating the couple's container according to the prior art, attention should be paid to the inconvenience that the bottle cap must be closed.

In addition, in the prior art 1, not only a container having a protruding joint part and a container having a concave joint part must be produced, but also different types must be produced to be used as a couple's container, so there is a need to manage each type separately. complex problems and difficulties.

In addition, in one example of the prior art 2, a container of a single form is manufactured in which a protruding joint is formed at a position eccentric from the horizontal center to one side with respect to the vertical direction of the container, and a concave joint is formed. The joint part is formed at the position from the horizontal center to the other side of the core with respect to the vertical direction of the container. When two containers are arranged oppositely, the opposite protruding joint part is inserted into the concave joint part or from the concave joint part by forced insertion. type binding part separation.

In the above-mentioned prior art 2, when two containers are to be combined or separated, a force and movement above the combined pressure will occur in the direction of mutual combination, and thus, the contents in the container will instantly tilt to one side (yaw movement). ), at this time, when the open bottle cap is opened, the contents may leak during the movement of combination or separation.

Korean Laid-Open Patent Publication No. 10-2013-0107126 (hereinafter, referred to as 'Prior Art 3') discloses a prior art for preventing leakage of contents from the shaking motion.

7 and 8 , in the above-mentioned prior art 3, the way of joining or separating two couples containers 1 is through the rail protrusions 2 and rail grooves 3 formed on the side walls of the container 1 toward the container 1 The opening formation direction on the upper side is realized, so that the effect of reducing the shaking motion of the liquid content corresponding to the positional movement of the container 1 during coupling or separation can be expected.

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

Here, most of the beverage containers are produced by blow molding, and the shape of the container produced by blow molding is formed in a state in which the upper portion excluding the opening portion is covered in a thickness range approximately the same as that of the side wall, The thickness range depends on the size of the container and the thickness and shape of its parison. The thickness of the container thus manufactured varies depending on the shape at each location, but the shape and thickness of the container are within a predetermined range due to the parison.

SUMMARY OF THE INVENTION

The present invention is proposed to solve the problems of the prior art, and its object is to provide a couple container, which can reduce the manufacturing cost by combining or separating two or more containers of the same shape by using the joints facing each other. , It is easy to selectively combine the contents and reduce the possibility of leakage of the contents, and the bottle cap can be easily opened and closed through the combination.

In addition, an object of the present invention is to provide a couple container, which is made by blow molding, and the side wall portion maintains the same level of thickness, and is combined with each other at the same joint portion facing each other, thereby realizing a mold. Simplification, reduce manufacturing costs and product management costs.

In order to achieve the above object, according to the couple container of the present invention, it is in the shape of a container with an opening formed on the upper side, and includes a joint portion, and the joint portion is on at least one reference plane in the side surface, so as to be relative to the up-down direction of the container. The reference position set in the lateral direction of the fuselage is subject to the reference position, and a protrusion with a protruding surface is formed on one side. The recessed part, the recessed surface is recessed from the reference plane to form a step, and the end of the protruding part adjacent to the recessed part protrudes from the reference position to the recessed part by a preset first interval , the end of the concave portion adjacent to the protruding portion is concavely extended from the reference position to the protruding portion in the shape of a predetermined second interval, and the end of the protruding portion facing the concave portion is connected The boundary surface between the end of the recessed portion facing the protruding portion forms an acute angle with respect to the protruding portion and the recessed portion, respectively, with the reference position as the center, forming the reference surface and the protruding portion and the recessed portion. The shape of each part of the part is continuously formed in the vertical direction of the container, wherein a deformation guide groove or a deformation guide protrusion is further formed in the protruding part, and the deformation guide groove is formed in the middle part in the horizontal direction with respect to the vertical direction of the container. The deformation guide projections are formed to be extended from the protruding surface in a vertical direction, and the deformation guide protrusions are formed to be extended from the recessed surface to the vertical direction. Deformation guide protrusions or deformation guide grooves into which the grooves or deformation guide protrusions are inserted into each other.

Furthermore, a first support surface that protrudes from the reference surface by a predetermined height to form the protruding portion and a second support surface that is recessed from the reference surface by a predetermined height to form the recessed portion are formed as the boundary surface. An angle above an acute angle.

Also, 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 recessed surface.

In addition, a locking protrusion or a locking groove is formed on the middle part of the container in the vertical direction of the interface surface, and a locking protrusion or a locking groove is formed toward the protruding surface of the recessed portion based on the reference position. A locking groove or a locking protrusion corresponding to the locking protrusion or locking groove is formed on the recessed surface portion facing the protruding portion.

The shape and volume of the inside of the recessed portion are determined by the shape and size larger than the outer shape of the inserted protruding portion.

The lower side portion of the opening including the joint portion is blow-molded integrally in a predetermined thickness range.

According to the structure of the present invention described above, in the state where the containers having the same shape and manufactured by blow molding are aligned with each other, they are inserted and coupled or separated by sliding up and down, and are produced by a single-shaped mold. The production cost can be saved, and it can be selectively combined with other contents, and since it is a single shape, the container can be easily managed. In addition, in the process of combining or separating the containers, the shaking of the contents can be prevented even when the opening of the container is opened, so that the ejection of the contents due to shaking can be reduced, and by turning one of the containers upwards The side sliding movement can combine or separate the bottle cap, which has the effect of easy opening and closing of the bottle cap.

Description of drawings

1 is a schematic diagram of the structure of a couple container according to an embodiment of the present invention;

FIG. 2 is a system diagram showing a plane state for explaining the structure of the joint of FIG. 1;

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

4a to 4c are cross-sectional views illustrating the structure and operation of a mold for manufacturing the container including the joint in FIG. 1;

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

FIG. 6 is a schematic perspective view showing a cutaway for explaining the arrangement of the locking projections and the locking grooves.

FIG. 7 is a perspective view showing a bonding relationship between lovers containers according to the related art;

FIG. 8 is a plan state sectional view showing the intermediate position of FIG. 7 .

Detailed ways

The present invention provides, as the best form, a couple container, the couple container is in the shape of a container with an opening formed on the upper side, and includes a joint portion, and the joint portion is on at least one reference plane in the side surface, so as to be relative to the container. The reference position set in the lateral direction of the up-down direction is the criterion, and a protrusion having a protruding surface is formed on one side, and the protruding surface protrudes from the reference plane to form a step. The concave portion of the concave surface, the concave surface is concave from the reference plane to form a step, and the end portion of the protruding portion adjacent to the concave portion is protruded from the reference position to the concave portion and extended by a preset number of steps. An interval, the end of the recessed portion adjacent to the protruding portion extends from the reference position to the protruding portion in the shape of a predetermined second interval, connecting the protruding portion facing the recessed portion The boundary surface between the end of the protruding part and the end of the recessed part facing the protruding part forms an acute angle with the reference position as the center with respect to the protruding part and the recessed part, respectively, forming the reference surface and the protruding part The shape of each part of the recessed portion is continuously formed in the up-down direction of the container, wherein a deformation guide groove or a deformation guide protrusion is further formed in the protruding portion, and the deformation guide groove is formed in the transverse direction with respect to the up-down direction of the container. The intermediate portion is formed to be extended from the protruding surface in an up-down direction, the deformation guide protrusion is formed to be extended to protrude in the up-down direction from the recessed surface, and the recessed portion is further formed corresponding to the oppositely formed. The deformation guide grooves or the deformation guide protrusions are the deformation guide protrusions or the deformation guide grooves in which the deformation guide protrusions are inserted into each other.

The terms or words used in this specification and the scope of the claims should not be limited to the usual or dictionary meanings, but should be defined according to the principle of the terms and concepts that the inventor can appropriately define in order to explain his invention in the best way. Meanings and concepts are interpreted as conforming to the technical idea of the present invention.

In addition, the embodiments described in the specification of the present invention and the structures shown in the drawings are only preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, it should be understood that when the present invention is applied for, there may be alternative Various equivalents and modifications of the invention.

Also, in describing the present invention, the expression on the upper side refers to the part located in the opposite direction of the center of the earth or in the direction of each constituent part, and the expression of the lower side refers to the direction of the center of the earth or each of the directions thereof. The composition part, therefore, will be described on the basis that the opening of the container is on the upper side.

In addition, when describing the present invention, the expression of one side refers to a position in any direction or a direction in which the center of the horizontal direction of the surface on which the joint portion is formed is in any direction or the direction of the container with the opening on the upper side, and the other side The expression refers to the parts in other directions or directions based on the horizontal center of one side, and it is explained here.

Furthermore, when describing the present invention, the expression inside refers to the inner center direction of the container or a position in the direction thereof, and the expression outside refers to a position opposite to or in the direction of the inner side.

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

The couple container 10 according to the present invention, as shown in FIG. 1 , is like a polyethylene terephthalate (PET: polyethylene terephthalate) bottle, which is produced by blow molding. A parison called a preform having an opening (screw portion) formed by an injection molding machine is placed in the mold of the form, heated at a predetermined temperature, and then blown in with compressed air.

In addition, the couple container 10 should be in a state where the opening is on the upper side, so as to prevent the contents from flowing out in the state where the bottle cap 14 is opened.

In the couple container 10 produced by blow molding as described above, when at least one of the plurality of side surfaces is used as the reference surface F, as shown in FIG. 2 , in the plane direction of the reference surface F, for example, in the 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 respect to the reference position CP provided in the horizontal direction of the vertical direction of the couple container 10 as the center, and a protruding surface PF is formed. The protruding part 16 has a protruding step relative to the reference plane F. Here, the vertical direction of the couple container 10 refers to the vertical direction from the bottom surface of the couple container 10 to the opening 12 . In addition, the horizontal direction with respect to the up-down direction of the couple's container 10 refers to a direction which forms a right angle with respect to the up-down direction of the couple's container 10 .

In addition, on the other side B centered on the reference position CP, for example, on the right side of the side surface, a second support surface b recessed by a predetermined height from the reference surface F is formed, and a recessed portion 18 having a recessed surface CF is formed. The reference plane F has a concave step.

Here, it is preferable that the reference plane CP is 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 couple's container 10, and is formed continuously in the up-down direction of the couple's container.

In this way, the reference position CP is located at the center of the side surface because, as described later, when the couple containers 10 having opposite shapes are combined with the reference position CP as the center, the two side edges of the coupled couple containers 10 are well joined without being shifted. On the other hand, the reference position 10 is not limited to this, and may not be in the center of the side surface.

As shown in FIG. 2 , the protruding portion 16 has a shape in which the end portion adjacent to the recessed portion 18 in the protruding surface PF protrudes toward the recessed portion 18 by a predetermined first interval d with reference to the reference position CP.

In addition, the recessed portion 18 has a form in which the end portion adjacent to the protruding portion 16 in the recessed surface CF is recessed toward the protruding portion 16 and extended by the second interval d′ with reference to the reference position CP.

In this way, when the reference plane F is viewed from the front, the protruding plane PF and the concave plane CF are shifted from each other by the first interval d and the second interval d' which are respectively extended with reference to the reference position CP.

Here, preferably, the second interval d' has a deeper shape than the first interval d (d<d'). This form forms the formation condition of the buffer part S so that the two couple containers 10 which face and couple with each other are combined with each other in the horizontal direction.

Furthermore, it is preferable that the portion of the recessed portion 18 that is recessed and extended from the reference position CP to the protruding portion 16 has a depth in the direction of the one side A and the depth direction with respect to the protruding portion 16 of the opposite-side couple container 10 facing and coupled to each other. , thereby, a buffer portion S that forms a space with the protruding portion 16 of the couple container 10 on the opposite side is formed.

As a result, 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 a staggered angle with respect to the protruding surface PF and the recessed surface CF with the reference position CP as the center. Make the wrong angle in the acute angle range.

Furthermore, it is preferable to design such that the range of the volume formed by the recessed portion 18 is greater than the volume of the protruding portion 16 under the same conditions, with the reference plane F and the reference position CP as boundaries, and the projection surface PF and the recessed surface CF are in contact with each other. In the state of not loose, that is, within the preset interval range.

Preferably, the first support surface a and the second support surface b are in an angle range of a right angle or more than the acute angle formed by the boundary surface BW with respect to the protruding surface PF and the recessed surface CF, respectively. The direction of the acute angle formed by the first supporting surface a and the second supporting surface b may be in the opposite direction of the acute angle formed by the boundary surface BW with respect to the protruding surface PF and the concave surface CF, respectively.

The angle formed by the first support surface a and the second support surface b is thus limited because in the state where the first support surface a and the second support surface b are in contact, the boundary surfaces BW are locked to each other, so that when the In the coupled state of the couple container 10, the protruding portion 16 is prevented from being detached from the recessed portion 18 due to a force that is detached in a vertical direction with respect to the reference plane F. As shown in FIG.

That is, as shown in FIG. 3c , this is because the recessed portion 18 has a shape with a wide width in the depth direction and a narrow width in the opposite direction, so that a structure of the same shape inside the recessed portion 18 is difficult to escape from a narrow space.

In addition, the reason why the acute angle formed by the first support surface a and the second support surface b is formed to be equal to or greater than the acute angle formed by the boundary surface BW is because when the mold is taken out from the mold to be described later, by operating the pusher that receives the elastic force of the elastic portion, the Deformed and removed at the same time.

As described above, the reference surface F, the first supporting surface a, the second supporting surface b, the protruding surface PF, the concave surface CF, and the boundary surface BW that form one side of the couple container 10 constitute a joint portion 20, and the joint portion 20 The side surface of the couple container 10 is continuously formed in the up-down direction of the couple container 10 .

That is, the structure of the joint portion 20 is such that the joints of the facing couple containers 10 made of blow molding are jointed or disjointed in the up-down direction in a sliding manner with each other. In other directions, it is difficult to bond and unbond.

Furthermore, as shown in FIG. 6 , it is preferable to form a locking protrusion 22 or a locking groove 24 at a portion facing the protruding surface PF of the recessed portion 18 with reference to the reference position CP in the middle portion in the vertical direction of the boundary surface BW. A locking groove 24 or a locking protrusion 22 corresponding to the locking protrusion 22 or the locking groove 24 is formed at the portion facing the concave surface CF of the protruding portion 16 based on the reference position CP.

That is, as shown in FIG. 6 , the locking protrusions 22 and the locking grooves 24 are formed in parallel on the boundary surface BW of the same height of the couple container 10. When the couple container 10 is connected, the locking protrusion 22 of the couple container 10 The locking groove 24 inserted into the couple container 10 on the other side functions to arrange the couple containers 10 in parallel at the same height.

In addition, in order to couple or release the coupler container 10 facing in the up-down direction, the latching protrusions 22 and latching grooves 24 slide and move against a force that is greater than or equal to a predetermined force acting on the couple container 10 in the up-down direction. At this time, it is preferable that the protruding portion 16 protruding toward the opposite side couple container 10 with respect to the space formed by the buffer portion S is bent and deformed with respect to the reference position CP as the reference position CP, and at the same time, the elastic action to restore the original shape is performed. The interface BW shows a tight feeling.

Further, a plurality of the locking protrusions 22 and the locking grooves 24 may be formed on the boundary surface BW toward the upper and lower directions of the couple container 10 .

Furthermore, as shown in FIG. 6 , the protruding portion 16 may further form a deformation guide groove 26 , which is recessed from the protruding surface PF at an intermediate portion in the lateral direction with respect to the vertical direction of the couple container 10 and faces toward The up-down direction of the couple container 10 is elongated. In addition, a deformation guide protrusion 28 is formed in the recessed portion 18 , and the deformation guide protrusion 28 protrudes from the recessed surface CF and is formed to extend in the up-down direction of the couple container 10 .

3a to 3c and FIG. 6, the deformation guide grooves 26 are used to combine with each other in the horizontal direction in addition to the up and down sliding method when combining the couple container 10 made by blow molding. .

First, referring to FIG. 3 a , the front portion of the protruding portion 16 is formed to be wider than the entrance of the recessed portion 18 at the position corresponding to the reference plane F, so the facing protruding portion 16 and the protruding portion 16 are slightly offset from each other. docking.

Fig. 3b shows that when the couple container 10 located on the upper side in Fig. 3a is in a stationary state, the couple container 10 located on the lower side is subjected to a force in the direction of the arrow F1, or the couple container 10 located on the upper side moves slowly in the direction of the arrow F2 , the deformation relationship of the protruding portions 16 that are close to each other when the couple container 10 on the lower side moves in the direction of the arrow F3 faster than the arrow F2 and the opposing force is applied to the couple container 10 .

As shown in FIG. 3b , by the above-mentioned action, the position of each protruding portion 16 in the direction of the reference position CP with respect to the deformation guide groove 26 is centered on the deformation guide groove 26 through the angle of the boundary surface BW in contact with the deformation guide groove 26 . It deforms in the directions of arrows f1 and f1`, and this deformation continues until the moment when the position of the first support surface a exceeds the boundary position of the second support surface b, that is, until the couple container 10 moves 1/2 interval (d``) from each other .

At this time, the buffer portion S secures its space so as not to be disturbed by the deformation of the protruding portion 16 based on the deformation guide groove 26 .

Furthermore, as shown in FIG. 3 c , the facing couple container 10 is formed with a deformation guide protrusion 28 of 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 protrusions 28 formed in the recessed portion 18 is opposite to the function of the deformation guide grooves 26 formed in the protruding portion 16, and is used when the combined couple container 10 is oriented in a horizontal direction, for example, relative to the couple container 10. During the horizontal expansion in the vertical direction, the first support surface a and the second support surface b are kept in contact with each other.

Although the deformation guide grooves 26 and the deformation guide protrusions 28 are not shown, they may be formed on the protruding surface PF and the concave surface CF in opposite phases, that is, the deformation guide protrusions 28 may be formed on the protruding surface PF and the deformation guide grooves may be formed on the concave surface CF. 26.

From this, it can be predicted that the deformation guide grooves 26 and the deformation guide grooves 26 which are formed in opposite phases to the above-mentioned deformation guide grooves 26 and the deformation guide protrusions 28 can perform the deformation guide grooves 26 and the deformation guide grooves 26 and the deformation guide grooves 26 as shown in FIGS. 3a to 3c. The guide protrusions 28 function in the same category.

The deformation guide grooves 26 and the deformation guide protrusions 28 are formed in this way because of the process of filling the beverage into each container of the couple container 10 made by blow molding and the process of injecting the drink into the couple container made by blow molding. 10 Containers are combined and separated automatically during the process of combining and supplying.

That is, coupling the couple container 10 only in the up-down direction 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 equipment for coupling.

Therefore, as mentioned above, the combination in the horizontal direction is convenient for the filling of the beverage and the subsequent engineering.

On the one hand, Figures 4a to 4c are used to illustrate the manufacturing process of the couple's 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 the molds are assembled.

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

Figure 4b shows a state in which the push part of the contact part between the molds is pushed by the elastic force of the elastic part to move the sliding core to the molding position after the molds are combined. In this state, A state in which air pressure is injected into the parison, and the molding is completed through the mold and the sliding core.

Fig. 4c shows the state in which the couple container 10 made by blow molding is manufactured through the cooling process after molding. If the mold is opened, the pushing part is first moved to the original position by the elastic part, and the sliding core is retreated to the molding position. And it moves to the position which releases the latching effect on the couple container 10 made by blow molding.

At this time, it is preferable to design an acute angle range for the undercut action on the first support surface a and the second support surface b, so that the operation force generated by the movement and displacement of the pushing part moved by the elastic part can be easily separated.

In addition, preferably, since an acute angle smaller than the acute angle formed by the first support surface a and the second support surface b is required, it is preferable to make the sliding core to move and retreat the pushing portion moved by the elastic portion. quick.

Moreover, preferably, as shown in Fig. 3a, the shape of the boundary surface BW corresponds to the retreating speed and position of the sliding core, and is formed as a waveform based on the reference position CP.

In addition, FIG. 5 is a modification of the couple's container according to the present invention, and shows the couple's container in which the protruding portion and the concave portion are formed on the four side surfaces, respectively.

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

According to the present invention, in the state where the containers having the same shape and manufactured by blow molding are aligned with each other, they can be inserted and coupled or separated by sliding up and down, and the manufacturing cost can be reduced because the containers are manufactured by a single-shaped mold. , and can be selectively combined with other contents, and since it is a single shape, it is easy to manage the container. In addition, in the process of combining or separating the containers, the shaking of the contents can be prevented even when the opening of the container is opened, so that the ejection of the contents due to shaking can be reduced, and by turning one of the containers upwards The side sliding movement can combine or separate the bottle cap, which has the effect of easy opening and closing of the bottle cap.

Although the present invention has been described above with reference to the accompanying drawings, it should be understood that those skilled in the art to which the present invention pertains can implement other specific forms without changing the technical idea or essential features of the present invention. Therefore, the above-described embodiments are illustrative in all respects, and do not limit the present invention.

Claims (6)

1. A couple container, which is a container shape with an opening formed on the upper side, comprising a joint portion, the joint portion is on at least one reference plane in the side surface, with respect to the reference set in the horizontal direction of the upper and lower directions of the container According to the position, a protruding part with a protruding surface is formed on one side, and the protruding surface protrudes from the reference surface to form a step, and based on the reference position, a recessed part with a recessed surface is formed on the other side, and the The recessed surface is recessed from the reference surface to form a step, and has an end of the protruding portion adjacent to the recessed portion protruding from the reference position to the recessed portion by a preset first interval, and the protruding portion is extended with a predetermined first interval. The ends of the adjacent recessed portions are recessed from the reference position to the projections in the shape of extending a predetermined second interval, connecting the ends of the projections toward the recesses and the projections toward the recesses. The boundary surface of the end of the recessed part of the part forms an acute angle with respect to the protruding part and the recessed part, respectively, with the reference position as the center, and forms the shape of the reference surface and each part of the protruding part and the recessed part It is formed continuously in the vertical direction of the container, and is characterized in that: The protruding portion is further formed with a deformation guide groove or a deformation guide protrusion, the deformation guide groove extending from the protruding surface in a recessed manner in the vertical direction at an intermediate portion in the horizontal direction of the container, and the deformation guide The protrusions are formed so as to protrude vertically from the recessed surface, and deformation guide protrusions or deformation guide grooves which are inserted into each other corresponding to the deformation guide grooves or deformation guide protrusions formed opposite to each other are formed in the recessed portion. 2 . The couple container according to claim 1 , wherein the first support surface that protrudes from the reference surface by a predetermined height to form the protruding portion, and the recessed portion is recessed from the reference surface by a predetermined height to form the first support surface. 3 . The second supporting surface is formed at an angle greater than the acute angle formed by the boundary surface. 3. The couple container of 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 middle part in the vertical direction of the container in the boundary surface is locked toward the protruding surface part of the recessed part based on the reference position. 5 . With respect to the reference position, the protrusion or the locking groove is formed with a locking groove or a locking protrusion corresponding to the locking protrusion or the locking groove toward the recessed surface portion of the protruding portion. 5 . The couple container according to claim 1 , wherein the shape and volume of the inside of the concave portion are formed by the shape and size of the outer shape of the protruding portion to be inserted relative to the outer shape and the size. 6 . 6 . The couple container according to claim 1 , wherein the lower portion of the opening including the joint portion is integrally blow-molded in a predetermined thickness range. 7 .

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