JP2014162527A - Container body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container body capable of overlapping many container bodies approximately linearly and of easily with comparatively small force, conducting the operations for inserting when overlapping and for pulling out when separating.SOLUTION: A container body 1 is provided with a plane part 2 being a bottom face, and a side part 3 which continues endlessly along the edge of the plane part 2 and forms a housing recess for housing an object between the recess and the plane part. An outer surface protrusion 6 protruding outside and extended to the direction to which the edge of the plane part extends is provided at the outer-surface lower part of the side part 3, and an inner surface protrusion which is engageable with the outer surface protrusion 6 by inserting another one of the same container body 1 into the housing recess and by bridging the outer surface protrusion 6 of the other container body is provided at the inner-surface lower part of the side part 3. Further, a positioning part 3b setting for positioning, a prescribed clearance between the plane parts 2, 2 of two container bodies 1, 1 which are overlapped by insertion.

Description

  The present invention relates to a container body having a housing recess for housing food such as yogurt, pudding, butter, margarine, pharmaceuticals such as jelly-like coatings, and other various objects, and in particular, the housing recess is somewhat wide. And a container body having a depth.

  In general, foods such as yogurt and pudding are automatically mass-produced in a flow operation by a large-scale automated production line in a manufacturing plant having a large production capacity. Generally, the container body which has the accommodation recessed part which accommodates the foodstuff which is a target object is manufactured in the container body manufacturing equipment comprised separately previously. A large amount of the manufactured container body is arranged in a large amount in the final process of the production line, and in the final process of the production line, it is automatically supplied onto the production line by the container supply device. Then, a desired object is automatically filled in the housing recess automatically supplied from the container supply device, and then the opening of the housing recess is closed with a lid so that products such as yogurt and pudding Is being produced.

  As a method for supplying a container body to a container supply apparatus used for manufacturing such a product, generally, a container body laminated block having a certain height (length) is formed by superimposing a large number of container bodies, One or two or more container laminated blocks are supplied to the container supply device with the container laminated block as a unit. In a stage before being supplied to the container supply device, a large number of container laminated blocks are accommodated in a cardboard box, and the cardboard box is transported as a unit to the container supply device.

  In these cases, in the conventional container body, the gap between the stacked container bodies is large, and the posture between the adjacent container bodies is easily changed. For this reason, it is difficult to stack a large number of container bodies substantially vertically, and as shown in FIG. 11, the container body stack block 100 often has a bowing shape, which has been a problem. For example, when taking out the container laminated block 100 from the cardboard box and setting it sideways, or when supplying the container laminated block 100 sideways to the container supply device, the containers constituting the container laminated block 100 In many cases, the body 101 is sequentially dropped from one side or both sides in the stacking direction due to its own weight due to the gap between the container bodies 101 and 101, and the stacked state is often lost. For this reason, it is difficult to carry the container stack block 100, and the container stack block 100 cannot be smoothly supplied to the container supply device.

  Patent Document 1 and Patent Document 2 describe examples of conventional container bodies used as food packaging containers.

JP2011-68397A JP 2003-200919 A

  Patent Document 1 describes a resin container that can be easily handled by consumers even if the container is thin. This resin container has a main body having a container recess for containing food and a lid configured to cover the opening of the main body. The main body has a bottom portion and a side wall portion extending circumferentially along an edge of the bottom portion, and a container recess is formed by the bottom portion and the side wall portion. Patent Document 2 describes a container that accurately arranges a label with respect to a container, and that reliably obtains barrier properties, and a method for forming the container. In this in-mold label container, the label has a barrier layer composed of at least a metal foil layer or a thermoplastic resin layer, and the layer laminated on the container body side is the same material as the container body or a material having adhesiveness with the container body. It is characterized by comprising.

  However, in both the resin container described in Patent Document 1 and the container body described in Patent Document 2, the resin container and the container body (hereinafter referred to as “container body”) are formed by injection molding using plastic as a material. From the viewpoint of productivity and the like, the side wall portion is inclined so that the opening side of the housing recess is made larger than the bottom portion. By adopting such a configuration, as shown in FIG. 11, a large number of container bodies 101 can be easily stacked, and the height of the stacked container stack blocks 100 is low (short) as a whole. The storage efficiency was very good.

  However, in the container laminated block 100, the contact surface between the adjacent container bodies 101 and 101 is large, and a large frictional resistance is generated. Therefore, the force required to peel off the container body 101 for supplying the container body 101 individually to the production line increases, and it is difficult to take out each container body 101 from the container body stacking block 100. there were.

  The present invention has been made in view of such conventional problems, and can be used to superimpose a large number of container bodies in a substantially straight line, and to insert the container bodies at the time of superposition and at the time of separation. An object of the present invention is to provide a container body that can be easily pulled out with a relatively small force.

  The container body of the present invention includes a flat surface portion serving as a bottom surface, and a side surface portion that is continuous endlessly along the edge of the flat surface portion and forms an accommodation recess for accommodating an object between the flat surface portion and It is equipped with. Provided on the lower portion of the outer surface of the side surface portion is an outer surface protrusion that protrudes outward and extends in the direction in which the edge of the flat surface portion extends, and is a lower portion of the inner surface of the side surface portion and accommodates the same other container body An inner surface protrusion that can be engaged with the outer surface protrusion is provided by inserting into the outer surface and overcoming the outer surface protrusion of another container body. Further, the present invention is characterized in that a positioning portion is provided for setting and positioning a predetermined gap between the flat portions of the two container bodies superimposed by insertion.

  The outer surface protrusion and the inner surface protrusion may be one continuous protrusion formed continuously endlessly along the edge of the plane portion, and may have an appropriate length along the edge of the plane portion. Two or more partial protrusions formed by extending may be used.

  The cross-sectional shape of the outer surface protrusion and the inner surface protrusion is a semicircular protrusion, an arc-shaped protrusion, or a triangular protrusion having an arbitrary radius of curvature.

  The side portion may be formed in a pyramid shape or a conical shape as an outwardly inclined surface in order to make the opening side of the housing recess larger than the plane portion, and the opening side of the housing recess is made larger than the plane portion. Therefore, it is preferable to set the inclination angle in two stages by providing a pyramid shape or a conical shape as the outward inclined surface, and providing a step extending in parallel with the edge of the flat surface portion in the middle of the inclined surface.

  The side surface portion may have a skirt portion that protrudes on the side opposite to the housing recess of the flat surface portion, and an outer surface protrusion portion may be provided on the tip side of the skirt portion.

  According to the present invention, it is possible to form a container laminated block in which a large number of container bodies are superposed and superposed in a straight line while having a simple structure, and the container body insertion operation at the time of the superposition is performed. And the container body which can perform the extraction operation | movement at the time of isolation | separation of a container body with a comparatively small force can be provided.

It is the perspective view which looked at the 1st example of the container object of the present invention from the slanting lower part. It is the perspective view which looked at 1st Example of the container body of this invention from diagonally upward. It is the half sectional view which cut the right half of the 1st example of the container object of the present invention. It is explanatory drawing which expands the principal part of FIG. 3 and demonstrates the state of a step part. It is a half sectional view explaining the state where two of the container bodies concerning the 1st example of the present invention were piled up. It is the perspective view which looked at the 2nd Example of the container body of this invention from diagonally downward. It is the perspective view which looked at 2nd Example of the container body of this invention from diagonally upward. It is the half sectional view which cut the right half of the 2nd example of the container object of the present invention. It is a half sectional view explaining the state where two of the container bodies concerning the 2nd example of the present invention were piled up. It is explanatory drawing explaining the lamination | stacking state of the container laminated block formed by overlapping many container bodies which concern on the Example of this invention. It is explanatory drawing explaining the lamination | stacking state of the container laminated body block formed by overlapping many conventional container bodies.

  Below, with reference to FIG. 1 thru | or FIG. 10, the example of the container body of this invention is demonstrated. The following example demonstrates the example applied to the container main body which has the accommodation recessed part with which a target object is filled. However, the container body of the present invention can also be applied as a lid used to open and close the opening of the container body.

  First, a first embodiment of a container body will be described with reference to FIGS. As shown in FIGS. 1 to 5, the container body 1 according to the first embodiment of the present invention includes a flat surface portion 2 that becomes a bottom surface, and a side surface portion 3 that continues endlessly along the edge of the flat surface portion 2. And is configured. The flat surface portion 2 and the side surface portion 3 form a housing recess 4 for housing food such as yogurt and pudding.

  The flat portion 2 has a form in which four corners of a rectangle are formed in an arc shape. A side surface portion 3 is continuously and integrally formed along the edge of the flat portion 2 in an endless manner. As shown in FIG. 3 and the like, the central portion of the flat portion 2 is provided with a bulging portion 5 slightly bulging upward in a spherical shell shape in order to increase the rigidity and increase the strength of the flat portion 2. It has been. The shape of the flat surface portion 2 is not limited to this embodiment, and circular, elliptical, square, pentagonal, hexagonal, octagonal, and other various shapes can be applied.

  The side surface portion 3 includes a body portion 3a projecting to the upper surface side which is one surface of the flat surface portion 2, a skirt portion 3b projecting to the lower surface side which is the other surface of the flat surface portion 2, and a skirt portion 3b of the body portion 3a. And a flange portion 3c continuous endlessly along the opposite edge. The flange portion 3 c is formed on the side opposite to the housing recess 4 and is developed outwardly in a direction parallel to the plane portion 2. A paper-like lid (not shown) can be attached to the upper surface of the flange portion 3c.

  The container body 1 according to the first embodiment is manufactured by injection molding using plastic as a material. Therefore, from the relationship with the injection mold, the body part 3a is formed with an appropriate inclination angle so that the upper part on the opening side is wider than the flat part 2, and the skirt part 3b. Is formed with an appropriate inclination angle so that the lower part on the opening side becomes wider.

  As shown in FIGS. 1-5, the outer surface protrusion part 6 which protrudes outside is provided in the lower part of the outer surface of the skirt part 3b. The outer surface protruding portion 6 according to this embodiment is formed as a convex portion protruding in a semicircular shape from the surface of the skirt portion 3b so as to extend a predetermined length in the circumferential direction at four corners curved in a convex arc shape. .

  The position of the outer surface protrusion 6 in the height direction of the container body 1 (the intermediate portion in the vertical direction of the outer surface protrusion 6 in the side surface portion 3) is the lower end surface of the container body 1 (the surface that contacts the mounting surface GR in FIG. 4). ) To a height of 20 mm or less. If the outer surface protrusion 6 is 20 mm or less in height from the lower end surface, the aesthetics of the container body 1 can be improved. The outer surface protrusion 6 may be anywhere on the outer surface of the side surface 3.

  The height of the outer surface protrusion 6 on the outer surface of the skirt portion 3b is preferably in the range of 0.2 mm to 2.0 mm. When the height of the outer surface protrusion 6 is set to 0.2 mm or more, the engagement relationship with the inner surface protrusion 7 can be secured, and the attachment / detachment operation can be easily performed. There is an advantage that it can be made difficult to come off. Further, when the height of the outer surface protrusion 6 is set to 2.0 mm or less, when the two container bodies 1 and 1 are overlapped, the outer surface protrusion 6 can move over the inner surface protrusion 7, and smooth. There is an advantage that the engagement operation can be secured and the engagement can be surely fixed.

The length of the outer protrusion 6 in the direction parallel to the plane portion 2 is preferably in the range of 5 mm to 20 mm. When the length of the outer surface protrusion 6 is 5 mm or more, there is an advantage that it is easy to adjust the blocking force (the holding force in the vertical direction when the plurality of container bodies 1 are stacked and held in the vertical direction). Moreover, when the length of the outer surface protrusion 6 is 20 mm or less, the presence of the outer surface protrusion 6 in the appearance of the container body 1 is inconspicuous, and there is an advantage that the aesthetic appearance can be improved.
The cross-sectional shape of the outer protrusion 6 is not limited to the semicircular shape shown in FIG. 4 and the like, and may be a spherical arc shape or a triangular shape.

The number of the outer protrusions 6 in the direction parallel to the plane portion 2 is preferably in the range of two to four. If the number is two or more, there is an advantage that the blocking force can be secured. Moreover, when the number is four or less, there exists an advantage that the aesthetics (appearance) on the external appearance of the container body 1 can be improved.
In addition, you may form the outer surface projection part 6 as an annular convex part (continuous projection part) by making it continue endlessly in the circumferential direction.

  There may be two or more outer protrusions 6 in the height direction of the container body 1, but one is sufficient. Moreover, the cross-sectional shape of the outer surface protrusion 6 is not limited to the semicircular shape shown in FIG. 4 or the like, and may be a spherical shell arc shape or a triangular shape.

  Moreover, as shown in FIGS. 2-5, the inner surface protrusion part 7 which protrudes in the accommodation recessed part 4 is provided in the lower part of the inner surface of the body part 3a. The inner surface protruding portion 7 according to this embodiment is formed as a convex portion protruding in a semicircular shape from the surface of the body portion 3a so as to extend a predetermined length in the circumferential direction at four corners curved in a concave arc shape. .

  The height of the inner surface protrusion 7 from the inner surface of the body 3a is preferably in the range of 0.2 mm to 2.0 mm. When the height of the inner surface protruding portion 7 is set to 0.2 mm or more, it is possible to ensure the engagement relationship with the outer surface protruding portion 6, and the attachment / detachment operation can be easily performed. There is an advantage that it can be made difficult to come off. Further, when the height of the inner surface protruding portion 7 is set to 2.0 mm or less, when the two container bodies 1 and 1 are overlapped, the inner surface protruding portion 7 can move over the outer surface protruding portion 6, and is smooth. There is an advantage that it is possible to ensure a stable engaging operation and to securely fix the engagement.

The length of the inner surface protrusion 7 in the direction parallel to the plane portion 2 is preferably in the range of 5 mm to 20 mm. There exists an advantage that adjustment of blocking force is easy in the length of the internal surface projection part 7 being 5 mm or more. Moreover, when the length of the inner surface protrusion 7 is 20 mm or less, the presence of the inner surface protrusion 7 in the appearance of the container body 1 is inconspicuous, and there is an advantage that the appearance aesthetics can be improved.
The cross-sectional shape of the inner surface protruding portion 7 is not limited to the semicircular shape shown in FIG. 4 and the like, and may be a spherical arc shape of a spherical shell shape or a triangular shape.

The number of the inner surface protruding portions 7 in the direction parallel to the placement surface GR is preferably matched with the number of the outer surface protruding portions 6 in the same direction of the other container bodies 1 to be overlaid.
In addition, you may form the inner surface protrusion part 7 as an annular convex part (continuous protrusion part) by making it continue endlessly in the circumferential direction.

  Further, the number of the inner surface protrusions 7 in the height direction of the container body 1 may be two or more, but one is sufficient. Moreover, although the lower part of the accommodation recessed part 4 is suitable for the position in the height direction of the container body 1 of the inner surface protrusion part 7, it determines with the relationship with the position of the outer surface protrusion part 6 of the other container body 1 to be piled up. Is done.

  The positional relationship in the height direction between the outer surface protruding portion 6 and the inner surface protruding portion 7 in one container body 1 may be set as follows. In this embodiment, the skirt portion 3 b functions as a positioning portion, and the two container bodies 1, 1 overlapped by inserting the other container body 1 into the accommodating recess 4 of the one container body 1. A predetermined gap can be set between the flat portions 2 and 2. At the time of this insertion, as shown in FIG. 5, when the lower end of the skirt portion 3 b forming the positioning portion comes into contact with the upper surface of the flat portion 2, the outer surface protruding portion 6 of the container body 1 positioned above is positioned below. It is set to a position where it can get over the inner surface protrusion 7 of the container body 1 with an appropriate margin. As a result, the two container bodies 1 and 1 can be stacked so as to be securely engaged and fixed in the lower part of the housing recess 4 and to be superimposed substantially vertically.

  Further, as shown in FIG. 4, a change point CA for changing the inclination angle is provided at a lower portion of the side surface portion 3 of the container body 1, slightly above the flat surface portion 2 in this embodiment, and the inclination angle of the side surface portion 3 is changed. Two stages are set. This change point CA is continued in the circumferential direction (direction parallel to the plane portion 2). The position of the change point CA is preferably 20 mm or less from the lower end surface of the container body 1. When the position of the change point CA is 20 mm or less from the lower end surface, the size of the outer surface protrusion 6 and the inner surface protrusion 7 necessary to secure the engagement state between the outer surface protrusion 6 and the inner surface protrusion 7. As compared with the case where the inclination of the side surface portion 3 is only one step, there is an advantage that one or both of the outer surface protrusion portion 6 and the inner surface protrusion portion 7 can be made as small as possible.

  The position of the change point CA is determined in relation to the mold structure because the container body 1 that is a product contracts slightly when the product is taken out at the time of injection molding. In general, an injection mold used for manufacturing this type of product is composed of a lower mold fixed to an injection molding machine, an upper mold placed opposite to the upper mold, and an intermediate between the lower mold and the upper mold. It consists of a medium size that is installed, and these constitute a cavity corresponding to the product (see FIGS. 1 to 3 of Patent Document 2). The pouring gate to which the molten material is supplied is formed in the lower mold, and when taking out the product after injection molding, first, the upper mold and the middle mold are integrally raised with respect to the lower mold, and the product is peeled from the lower mold. . Next, the movement of the middle mold is stopped after moving a predetermined distance, and the product is peeled from the middle mold. Next, while only the upper die is moved further, the protruding rod provided on the upper die is protruded into the cavity, and the product is peeled off from the upper die. Thereby, manufacture of the product (container body 1) by this metal mold | die is completed.

  The lower mold of this mold is provided with a convex part that enters the inside of the skirt part 3b of the container body 1, but since the convex part is provided with a tapered taper part, the product is peeled from the lower mold. The operation can be easily performed. On the other hand, the upper mold is provided with a convex portion that enters the inside of the accommodating concave portion 4, and the convex portion is provided with a tapered taper portion, and a protrusion for forming the inner surface protruding portion 7 on the tip side thereof. Grooves are formed. Further, a tapered hole that forms the outer peripheral surface of the side surface portion 3 is formed in the middle mold, and a projection groove for forming the outer surface projection portion 6 is formed on the lower mold side of the hole. Therefore, the product is difficult to peel from the middle mold due to the presence of the projection groove provided in the middle mold, and the product is difficult to peel from the upper mold due to the projection groove provided in the upper mold. Yes.

  However, products made of plastic as a raw material have the property of shrinking by a small amount when solidified in a cavity. At this time, in the middle mold, the direction in which the product shrinks is the direction away from the surface of the middle mold, so that the outer surface projection 6 of the container body 1 becomes smaller inward so as to be removed from the projection groove. On the other hand, in the upper mold, the direction in which the product shrinks is the direction in which the convex portion is tightened, and thus it is difficult to leave the convex portion. As a result, after stopping the movement of the middle mold, the product can be peeled from the middle mold in a state where only the upper mold is moved and the product is attached to the upper mold.

  Next, in the process of peeling the product from the upper mold, the size of one or both of the outer surface protrusion 6 and the inner surface protrusion 7 as described above is provided by providing the change point CA and forming the side surface portion 3 in two stages. The effect that can be made as small as possible is exhibited. In this way, the side surface portion 3 is provided with the lower inclination angle θ1 and the upper inclination angle θ2, and the inner surface protrusion portion 7 is provided at the portion of the lower inclination angle θ1, thereby making the inclination of the side surface portion 3 only one step. The size of the inner surface protrusion 7 can be made small, and even the small inner surface protrusion 7 can ensure a sufficient engagement state with the outer surface protrusion 6.

  From the relationship with the mold structure described above, the specific position of the change point CA may be within a range in which the distance from the lower end surface of the skirt portion 3b (the surface in contact with the placement surface GR) is 20 mm or less in height. preferable. A more preferable value is 15 mm. If the distance from the skirt portion 3b of the change point CA is 15 mm, there is an advantage that the above-described effect can be obtained.

  In order to obtain such a two-stage configuration, in this embodiment, a lower inclination angle θ1 is set in the skirt portion 3b below the change point CA, and an upper inclination angle θ2 is set in the body portion 3a above the change point CA. It is set. Here, the lower inclination angle θ1 and the upper inclination angle θ2 refer to angles with respect to a vertical line orthogonal (90 °) to the placement surface GR.

  The value of the lower inclination angle θ1 is preferably in the range of 2 ° to 7 °, and more preferably 3 ° to 4 °. If the value of the lower inclination angle θ1 is 2 ° or more, there is an advantage that the releasability of the container body 1 from the cavity can be improved. This effect becomes more remarkable when the value of the lower inclination angle θ1 is 3 ° or more. In addition, when the value of the lower inclination angle θ1 is 7 ° or less, the upper portion of the container body 1 is prevented from being unnecessarily larger than the lower portion, and the container body 1 is stable when placed on the placement surface GR. There is an advantage that the sex can be improved. This effect becomes more remarkable when the value of the lower inclination angle θ1 is 4 ° or less.

  Further, the value of the upper inclination angle θ2 is preferably in the range of 4 ° to 8 °, and more preferably 6 ° to 7 °. If the value of the upper inclination angle θ2 is 4 ° or more, there is an advantage that the height of the container laminated block 10 in which a plurality of container bodies 1 are stacked can be suppressed low. This effect becomes more remarkable when the value of the upper inclination angle θ2 is 6 ° or more. If the value of the upper inclination angle θ2 is 8 ° or less, the upper portion of the container body 1 is prevented from becoming unnecessarily larger than the lower portion, and the stability of the container body 1 when placed on the placement surface GR is improved. There is an advantage that you can do well. This effect becomes more remarkable when the value of the upper inclination angle θ2 is 7 ° or less.

  The range of the change angle φ, which is a value obtained by subtracting the lower inclination angle θ1 from the upper inclination angle θ2, is preferably 1 ° to 5 °, and more preferably 3 ° to 4 °. When the change angle φ is 1 ° or more, there is an advantage that both the outer surface protrusion 6 and the inner surface protrusion 7 can be set low. This effect becomes more remarkable when the change angle φ is 3 ° or more. When the change angle φ is 5 ° or less, the container body 1 is prevented from blocking when the container body stacking block 10 is stacked (to prevent the container body 1 located at the lowermost part from being pulled out), and with the least force. There is an advantage that the container body 1 located in the lower part can be extracted. When the change angle φ is 4 ° or less, this effect becomes more remarkable.

  As a material of the container body 1 having such a configuration, for example, polypropylene (PP), polyethylene (PE) and other various plastics that can be used as food containers can be applied. The container body 1 can be formed by injection molding using a mold having a cavity having the above configuration.

  The height of the container body 1 is preferably in the range of 30 mm to 150 mm. There exists an advantage that the state as a container for accommodating objects, such as yoghurt, can be made as the height of the container body 30 is 30 mm or more. There exists an advantage that the productivity of the container body 1 can be improved as the height of the container body 1 is 150 mm or less.

The maximum horizontal dimension of the container body 1 is preferably in the range of 40 mm to 200 mm. There exists an advantage that the state as a container for accommodating objects, such as yogurt, can be made as the largest dimension is 40 mm or more. There exists an advantage that productivity of the container body 1 can be improved as the largest dimension is 200 mm or less.
The height and the maximum horizontal dimension of the container body 1 according to the present invention and the container body 11 to be described later are preferably within these ranges, but of course are not limited to those within these ranges.

  According to the container body 1, the outer protrusion portion 6 and the inner protrusion portion 7 are provided on the container body 1, and the two container bodies 1 and 1 that are overlaid are engaged with each other. Therefore, when a large number of the same container bodies 1 are stacked, in the conventional container body 101 as shown in FIG. In this case, it is possible to eliminate the possibility that the container body 1 is separated and detached from the tip or both ends, and as shown in FIG. 10, the container body laminated block 10 is maintained in the straight state in which the container body is connected to the original substantially straight. It becomes possible.

  Next, a second embodiment of the container body will be described with reference to FIGS. As shown in FIGS. 6 to 9, the container body 11 according to the second embodiment of the present invention includes a flat surface portion 12 that becomes a bottom surface, and a side surface portion 13 that continues endlessly along the edge of the flat surface portion 12. And is configured. The flat surface portion 12 and the side surface portion 13 form a housing recess 14 for housing food such as yogurt and pudding.

  The flat surface portion 12 has a form in which four corners of a rectangle are formed in an arc shape. A side surface portion 13 is continuously and integrally formed along the edge of the flat surface portion 12 in an endless manner. As shown in FIG. 8 and the like, the central portion of the flat portion 12 is provided with a bulging portion 15 slightly bulging upward in a spherical shell shape in order to increase the rigidity of the flat portion 12 and increase the strength. It has been. The shape of the flat surface portion 12 is not limited to this embodiment, and circular, elliptical, square, pentagonal, hexagonal, octagonal, and other various shapes can be applied.

  The side surface portion 13 includes a body portion 13a that protrudes toward the upper surface, which is one surface of the flat surface portion 12, and a flange portion 13c that continues endlessly along an edge opposite to the flat surface portion 12 of the body portion 13a. Have. The flange portion 13 c is formed so as to expand to the outside, which is the side opposite to the housing recess 14 and is parallel to the plane portion 12. A paper-like lid (not shown) can be attached to the upper surface of the flange portion 13c.

  The container body 11 according to the second embodiment is manufactured by injection molding using plastic as a material. Therefore, in view of the relationship with the injection mold, the body portion 13a is formed with an appropriate inclination angle so that the upper side on the opening side is wider than the flat surface portion 12.

  Further, as shown in FIG. 8, a change point CA for changing the inclination angle is provided below the side surface portion 13 of the container body 11, slightly above the flat surface portion 12 in this embodiment, and the inclination angle of the side surface portion 13 is changed. Two stages are set. The change points CA are continuous in the circumferential direction. The position of the change point CA is preferably 20 mm or less from the lower end surface of the container body 11. When the position of the change point CA is 20 mm or less from the lower end surface, the size of the outer surface protrusion 16 and the inner surface protrusion 17 necessary to secure the engagement state between the outer surface protrusion 16 and the inner surface protrusion 17. As compared with the case where the inclination of the side surface portion 13 is only one step, there is an advantage that one or both of the outer surface protrusion portion 16 and the inner surface protrusion portion 17 can be made as small as possible.

  In this embodiment, the lower inclination angle θ1 is set below the body below the change point CA, and the upper inclination angle θ2 is set above the body above the change point CA. The lower inclination angle θ1 and the upper inclination angle θ2 are the same as the lower inclination angle θ1 and the upper inclination angle θ2 in the first embodiment described above, with respect to a vertical line perpendicular to the placement surface of the container body 11 (90 °). Say it.

  The value of the lower inclination angle θ1 is preferably in the range of 2 ° to 7 °, and more preferably 3 ° to 4 °. If the value of the lower inclination angle θ1 is 2 ° or more, there is an advantage that the releasability of the container body 11 from the cavity can be improved. This effect becomes more remarkable when the value of the lower inclination angle θ1 is 3 ° or more. In addition, when the value of the lower inclination angle θ1 is 7 ° or less, the upper portion of the container body 11 is prevented from being unnecessarily larger than the lower portion, and the container body 11 is stable when placed on the placement surface GR. There is an advantage that the sex can be improved. This effect becomes more remarkable when the value of the lower inclination angle θ1 is 4 ° or less.

  Further, the value of the upper inclination angle θ2 is preferably in the range of 4 ° to 8 °, and more preferably 6 ° to 7 °. If the value of the upper inclination angle θ2 is 4 ° or more, there is an advantage that the height of the container body laminated block in which the plurality of container bodies 11 are stacked can be kept low. This effect becomes more remarkable when the value of the upper inclination angle θ2 is 6 ° or more. If the value of the upper inclination angle θ2 is 8 ° or less, the upper portion of the container body 11 is prevented from becoming unnecessarily larger than the lower portion, and the stability of the container body 11 when placed on the placement surface GR is improved. There is an advantage that you can do well. This effect becomes more remarkable when the value of the upper inclination angle θ2 is 7 ° or less.

  The range of the change angle φ, which is a value obtained by subtracting the lower inclination angle θ1 from the upper inclination angle θ2, is preferably 1 ° to 5 °, and more preferably 3 ° to 4 °. When the change angle φ is 1 ° or more, there is an advantage that both the outer surface protrusion 16 and the inner surface protrusion 17 can be set low. This effect becomes more remarkable when the change angle φ is 3 ° or more. Further, when the change angle φ is 5 ° or less, blocking of the container body 11 at the time of stacking the container body laminated block can be prevented, and the container body 11 positioned at the lowermost portion can be extracted with a small force. There is an advantage. When the change angle φ is 4 ° or less, this effect becomes more remarkable.

  Moreover, as shown in FIGS. 6-9, the outer surface protrusion part 16 which protrudes outside is provided in the lower part of the body part 13a. The outer surface protrusion 16 according to this embodiment is formed as a protrusion protruding in a semicircular shape from the surface of the body portion 13a so as to extend a predetermined length in the circumferential direction at four corners curved in a convex arcuate shape. .

  The position of the outer surface protruding portion 16 in the height direction of the container body 11 (the intermediate portion in the vertical direction of the outer surface protruding portion 16 in the side surface portion 13) is the lower end surface of the container body 11 (the surface that contacts the mounting surface GR in FIG. 8). ) To a height of 20 mm or less. If the outer surface protrusion 16 is 20 mm or less in height from the lower end surface, the aesthetic appearance of the container body 11 can be improved. The outer surface protrusion 16 may be anywhere on the outer surface of the side surface 13.

  The height of the outer surface protrusion 16 from the outer surface of the body portion 13a is preferably in the range of 0.2 mm to 2.0 mm. When the height of the outer surface protrusion 16 is set to 0.2 mm or more, the engagement relationship with the inner surface protrusion 17 can be secured, and the attaching / detaching operation can be easily performed. There is an advantage that it can be made difficult to come off. Further, when the height of the outer surface protrusion 16 is set to 2.0 mm or less, when the two container bodies 11 and 11 are overlapped, the operation of the outer surface protrusion 16 over the inner surface protrusion 17 becomes possible and smooth. There is an advantage that the engagement operation can be secured and the engagement can be surely fixed.

The length of the outer surface protrusion 16 in the direction parallel to the flat surface portion 12 is preferably in the range of 5 mm to 20 mm. There exists an advantage that adjustment of blocking force is easy in the length of the outer surface protrusion part 16 being 5 mm or more. Moreover, when the length of the outer surface protrusion 16 is 20 mm or less, the presence of the outer surface protrusion 16 in the appearance of the container body 11 is inconspicuous, and there is an advantage that the appearance aesthetics can be improved.
The cross-sectional shape of the outer protrusion 16 is not limited to the semicircular shape shown in FIG. 8 and the like, and may be a spherical arc shape of a spherical shell or may be a triangle.

The number of the outer protrusions 16 in the direction parallel to the plane portion 12 is preferably in the range of two to four. When the number is two or more, there is an advantage that a blocking force can be secured. Moreover, when the number is four or less, there exists an advantage that the aesthetics (appearance) on the external appearance of the container body 11 can be improved.
In addition, you may form the outer surface projection part 16 as an annular convex part (continuous projection part) by making it continue endlessly in the circumferential direction.

  There may be two or more outer protrusions 16 in the height direction of the container body 11, but one is sufficient. Moreover, the cross-sectional shape of the outer surface protrusion 16 is not limited to the semicircular shape shown in FIG. 8 and the like, and may be a spherical arc shape of a spherical shell or may be a triangle.

  Furthermore, as shown in FIGS. 6 to 9, an inner surface protrusion 17 that protrudes into the housing recess 14 is provided at the lower portion of the inner surface of the body portion 13 a. The inner surface protrusion portion 17 according to this embodiment is formed as a convex portion protruding in a semicircular shape from the surface of the body portion 13a so as to extend a predetermined length in the circumferential direction at four corners curved in a concave arc shape. .

The height of the inner surface protrusion 17 from the inner surface of the body portion 13a is preferably in the range of 0.2 mm to 2.0 mm. When the height of the inner surface protrusion 17 is set to 0.2 mm or more, the engagement relationship with the outer surface protrusion 16 can be secured, and the attachment / detachment operation can be easily performed. There is an advantage that it can be made difficult to come off. Moreover, when the height of the inner surface protruding portion 17 is set to 2.0 mm or less, when the two container bodies 11 and 11 are overlapped, the inner surface protruding portion 17 can move over the outer surface protruding portion 16, and smooth. There is an advantage that it is possible to ensure a stable engaging operation and to securely fix the engagement.
The cross-sectional shape of the inner surface protrusion 17 is not limited to the semicircular shape shown in FIG. 8 or the like, and may be a spherical shell arc shape or a triangular shape.

The length of the inner surface protrusion 17 in the direction parallel to the plane portion 12 is preferably in the range of 5 mm to 20 mm. When the length of the inner surface protrusion 17 is 5 mm or more, there is an advantage that the blocking force can be easily adjusted. Moreover, when the length of the inner surface projection part 17 is 20 mm or less, there exists an advantage that the appearance aesthetics can be improved as the presence of the inner surface projection part 17 in the appearance of the container body 11 is not conspicuous.
The cross-sectional shape of the inner surface protrusion 17 is not limited to the semicircular shape shown in FIG. 4 or the like, and may be a spherical arc shape of a spherical shell or a triangle.

The number of the inner surface protrusions 17 in the direction parallel to the flat surface part 12 is preferably matched with the number of the outer surface protrusions 16 in the same direction of the other container bodies 11 to be overlaid.
In addition, you may form the internal surface protrusion part 17 as an annular convex part (continuous protrusion part) by making it endlessly continue in the circumferential direction.

  Further, the number of the inner surface protrusions 17 in the height direction of the container body 11 may be two or more, but one is sufficient. Moreover, although the lower part of the accommodation recessed part 14 is suitable for the position of the inner surface protrusion part 17 in the height direction of the container body 11, it determines with the relationship with the position of the outer surface protrusion part 16 of the other container body 11 to be piled up. Is done. In order to determine the positional relationship between the inner surface protruding portion 17 and the outer surface protruding portion 16, a positioning piece 18 as a positioning portion is provided.

  As shown in FIGS. 6, 8, and 9, the positioning pieces 18 are portions that are continuous from the upper surface of the outer surface of the body portion 13 a to the lower surface of the flange portion 13 c and are provided at the four corners that are arcuate convex portions. It has been. The positioning piece 18 plays a role of regulating the position in the stacking direction between the two overlapping container bodies 11 and 11. The positioning pieces 18 may be provided at one or more places on the upper part of the outer surface of the side surface portion 13, and in consideration of the balance, it is good to provide them at two or four places. However, the number of the positioning pieces 18 is not limited to these values, and it is needless to say that the positioning pieces 18 can be configured as an integral convex part or step part continuously in the circumferential direction. The height of the positioning piece 18 is a length corresponding to the position where the outer surface protrusion 16 of one container body 11 and the inner surface protrusion 17 of the other container body 11 are just engaged.

  In this embodiment, the positioning piece 18 is interposed between the flat portions 12 and 12 of the two container bodies 11 and 11 that are overlapped by inserting the other container body 11 into the accommodating recess 14 of the one container body 11. A predetermined gap is set, and the two container bodies 11 and 11 that are overlapped with each other as a predetermined position are positioned while holding the predetermined gap. That is, as shown in FIG. 9, when the lower end of the positioning piece 18 comes into contact with the upper surface of the flange portion 13c of the other container body 11, the outer surface protrusion 16 of the container body 11 positioned above is positioned downward. It will be the position which gets over the inner surface projection part 17 of the container body 11 to be done with a suitable margin. As a result, the two container bodies 11 can be stacked so as to be engaged and fixed reliably at the lower part of the housing recess 14 and to be superposed substantially vertically.

  As a material of the container body 11 having such a configuration, for example, polypropylene (PP), polyethylene (PE), and other various plastics that can be used as food containers can be applied. The container body 11 can be formed by injection molding using a mold having a cavity having the above configuration.

  According to the container body 11, the outer body protrusion 16, the inner surface protrusion 17, and the positioning piece 18 are provided on the container body 11, and the two container bodies 11, 11 that are overlaid are engaged with each other. Therefore, when a large number of the same container bodies 11 are stacked, in the conventional container body 101 as shown in FIG. In this case, it is possible to eliminate the possibility that the container body 11 is separated and detached from the tip or both ends, and it is possible to maintain the container body laminated block 10 in a state of being connected substantially straight at the beginning.

  As described above, the present invention is not limited to the above two embodiments, and various modifications can be made within an equivalent range, and various modifications can be made within the scope of the invention described in the claims. It will be readily understood by those skilled in the art that this is possible.

DESCRIPTION OF SYMBOLS 1,11 ... Container body, 2,12 ... Plane part (bottom surface), 3,13 ... Side part, 3a, 13a ... Body part, 3b ... Skirt part, 3c, 13c ... Flange part, 4,14 ... Containment recessed part, 5, 15 ... bulge part, 6, 16 ... outer surface protrusion part, 7, 17 ... inner surface protrusion part, 10 ... container body laminated block, 18 ... positioning piece (positioning part)

Claims (7)

A flat surface portion serving as a bottom surface;
A side surface portion that is endlessly continuous along the edge of the flat surface portion and that forms an accommodating recess for accommodating an object between the flat surface portion, and
Provided on the lower portion of the outer surface of the side surface portion is an outer surface protrusion that protrudes outward and extends in the direction in which the edge of the flat surface portion extends,
An inner surface which is a lower part of the inner surface of the side surface portion and can be engaged with the outer surface protrusion by inserting the same other container body into the receiving recess and getting over the outer surface protrusion of the other container body. Providing a protrusion,
Furthermore, the positioning body which sets and positions the predetermined clearance gap between the plane parts of the two container bodies overlaid by the said insertion was provided. The container body characterized by the above-mentioned. The container body according to claim 1, wherein the outer surface protrusion and the inner surface protrusion are one continuous protrusion formed continuously in an endless manner along an edge of the planar portion. 2. The container according to claim 1, wherein the outer surface protrusion and the inner surface protrusion are two or more partial protrusions formed to extend to an appropriate length along an edge of the planar portion. body. The container body according to any one of claims 1 to 3, wherein cross-sectional shapes of the outer surface protrusion and the inner surface protrusion are a semicircular protrusion, an arc-shaped protrusion, or a triangular protrusion having an arbitrary radius of curvature. . The side surface portion is formed in a pyramid shape or a conical shape as an outwardly inclined surface in order to make the opening side of the housing recess larger than the flat surface portion. The container body described. The side surface portion has a pyramid shape or a conical shape as an outwardly inclined surface in order to make the opening side of the housing recess larger than the flat surface portion, and an edge of the flat surface portion in the middle of the inclined surface The container body according to any one of claims 1 to 4, wherein a step extending in parallel is provided and an inclination angle is set to two stages. The side surface portion has a skirt portion that protrudes to the opposite side of the accommodating recess of the flat surface portion,
The container body according to any one of claims 1 to 6, wherein the outer surface protrusion is provided on a distal end side of the skirt portion.

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