compact

Abstract

To realize improvement of stability and easiness of attachment / detachment of an individual container while simplifying a structure with respect to a compact of a type of permitting arranging many individual containers inside a body.SOLUTION: A compact is composed of a body 1, a lid 2 and many individual containers 3. Many bosses 13 are vertically and horizontally aligned and formed at the same pitch in the body 1. Each side of the individual container 3 has a size of an integral multiple of the pitch of the boss 13, and a frame body 17 is formed so as to surround the group of the bosses 13 from four sides. An engaging groove 15 is formed in the boss 13, and an engaging protrusion 18 is formed in the frame body 17. A central hole of the boss 13 penetrates into a bottom plate 12 of the body 1, and the individual container 3 can be projected by a pin-like thin article.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a cosmetic compact. [Background technology]

[0002] Cosmetic compacts contain cosmetics such as blusher and eye shadow, but there is a demand for cosmetics in a variety of colors. Therefore, it has been proposed to make it possible to detachably place a large number of individual containers inside the main body. The individual containers are generally formed in a quadrilateral (square or rectangular) shape.

[0003] If the individual containers are detachable, they need to be held so that they do not easily come off the main body. Conventional techniques related to this holding means include those using magnets (e.g., Patent Document 1), those using double-sided adhesive tape (Patent Document 2), those using an adhesive member (Patent Document 3), those in which grooves formed on the bottom surface of the individual containers are engaged with protrusions provided on the main body (Patent Document 4), those in which protrusions formed on the bottom surface of the individual containers are engaged with grooves or holes provided on the main body, those in which a group of downward protrusions provided on the individual containers surrounds upward protrusions provided on the main body (Patent Document 5), and those in which a C-shaped mating recess (holder portion) formed on the side of the individual container is fitted with an upward protrusion provided on the bottom surface of the main body (Patent Document 6). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Microfilm of Utility Model Publication No. 63-076210 [Patent Document 2] Microfilm of Utility Model Publication No. 57-158406 [Patent Document 3] Microfilm of Utility Model Publication No. 57-158460 [Patent Document 4] JP 2003-204821 A [Patent Document 5] Microfilm of Utility Model Publication No. 57-169205 [Patent Document 6] Microfilm of Utility Model Publication No. 55-159007 Summary of the Invention [Problem to be solved by the invention]

[0005] The use of magnets, double-sided adhesive tape, or suction materials as a means for holding individual containers increases costs, and magnets are used in combination with magnetic plates, which increases costs and weight.

[0006] On the other hand, when engaging means such as protrusions and grooves are used as the means for holding the individual containers as in Patent Documents 4 to 6, the engaging parts such as the protrusions and grooves are formed by molding, which has the advantage of reducing costs. However, when examined individually, problems can be seen.

[0007] For example, in Patent Document 6, the bonding recess protrudes sideways from the side of the individual container, resulting in the problem that the bonding recess is exposed to the outside of the individual container and is not aesthetically pleasing. Compacts are used by people for makeup, and high design quality is required for the compact itself, but if the bonding recess is exposed, the cosmetic quality of the compact is reduced, which may impair the commercial value.

[0008] On the other hand, in the configurations of Patent Documents 4 and 5, the protrusions, grooves, and holes are hidden below the individual containers, so there is no problem of poor aesthetics when used compactly. However, in Patent Document 4, the grooves formed on the bottom surface of the individual containers are open on both sides, so the individual containers can slide in the longitudinal direction of the grooves, and therefore, the movement of the individual containers must be prevented by packing multiple individual containers into the main body, which may impair the freedom of layout of the individual containers.

[0009] On the other hand, in the configuration of Patent Document 5, in which protrusions (ribs) formed on the underside of the individual containers engage with grooves or holes provided in the main body, when the protrusions on the underside of the individual containers fit into the grooves or holes in the main body, the individual containers are held so that they cannot shift sideways, allowing the individual containers to be laid out freely, but because the entire underside of each individual container is in close contact with the bottom surface of the main body, there is a concern that if processing errors occur due to molding shrinkage of the main body or the individual containers, the heights of the individual containers will not be uniform, resulting in a poor appearance. In addition, there is a concern that rattling will occur if the engagement between the protrusions (ribs) and the grooves or holes is loose.

[0010] The present invention has been made against this background, and aims to provide an improved compact capable of storing a large number of individual containers. [Means for solving the problem]

[0011] The present invention relates to "A tray-shaped main body that is rectangular in plan view and opens upward, and a group of individual containers that are rectangular in plan view and detachably arranged inside the main body, A group of bosses each having a circular shape in plan view and a center hole penetrating vertically are arranged at the same pitch vertically and horizontally on the bottom surface of the body, protruding upward, while the length of each of the four sides of each of the individual containers is 1 / 100th of the pitch of the bosses. Slightly smaller than an integer multiple of 3 or more The width dimension is set, and a frame body inscribed in the group of bosses is provided on each of the four sides of the individual container so as to protrude downward continuously without interruption around the entire circumference, The individual containers are attached to and detached from the main body by engaging and disengaging a first engagement portion formed over the entire outer circumferential surface of the boss with a second engagement portion formed partially on the inner circumferential surface of the frame against elasticity, and one of the first engagement portion and the second engagement portion is an engagement protrusion and the other is an engagement groove. This is the basic configuration.

[0012] In the above basic configuration, "The outer peripheral surface of each individual container is tapered downward due to a draft angle during molding, and each corner of the frame is provided with a Each one is different from the othersThe boss is inscribed in the frame and is disposed between one end and the other end of each side of the frame. , which is different from the boss inscribed in the corner portion. At least one of the bosses is set to be inscribed in the frame, and the second engagement portion is partially formed on an inner surface of a portion between one end and the other end of each side of the frame, And the downward protruding dimension of the frame body is boss and each of the individual container There is a gap between the bottom plate and the boss. It has the following characteristics:

[0014]

[0015]

[0016]

[0017] In the present invention, only the individual containers may be disposed inside the main body, or a brush storage section and a puff storage section may be formed separately from the section in which the individual containers are disposed. In this case, the brush storage section and the puff storage section may be formed integrally with the main body, or may be manufactured as separate members from the main body and attached by the same engaging means as the individual containers of the present invention. Effect of the Invention

[0018] In the present invention, the individual containers are frame body Since the containers are supported by the main body by being placed on the bottom surface of the main body, even if the bottom surface of the main body or the bottom surfaces of the individual containers become uneven due to molding shrinkage, the effects of the unevenness can be eliminated and the containers can be stably arranged. Therefore, when arranging a large number of individual containers in a row, the top surfaces of the individual containers can be aligned to be even, resulting in an excellent aesthetic appearance.

[0019] In the present invention, the pair of bosses are sandwiched horizontally between the pair of frames. There are Therefore, the boss and the frame can be held in a stable engaged state. Also, compared to a structure in which one upward protrusion is surrounded by four downward protrusions as in Fig. 5 of Patent Document 5, this structure has the advantage of making it easier to attach and detach the individual containers.

[0020] When a large number of individual containers are aligned vertically and horizontally, it is preferable to set the individual containers so that there is a small gap between the upper ends of adjacent individual containers, because this makes them appear to be at the same height even if there is a slight difference in level between the upper surfaces of adjacent individual containers. Also, the individual containers can move up and down more easily, which makes it easier to attach and detach the individual containers.

[0021] In the present invention , Individual containers are boss Since the individual containers can be arranged inside the main body with a pitch of 10 mm or less, it has the advantage that individual containers of different sizes and shapes can be attached and that the variation in layout of the individual containers can be expanded. Therefore, it is user-friendly.

[0022] In the present invention, the individual container has a downward frame. This improves the stability of the individual containers. frame body The group of bosses is surrounded by this, which effectively prevents lateral shifting and rattling, improving the commercial value of the compact.

[0023] The engaging means for preventing the boss and the frame from separating from each other can be embodied in various ways. The present invention By adopting a combination of the engagement protrusion and engagement groove as described above, the engagement protrusion and engagement groove can be easily formed by so-called forced extraction when molding the individual container and the main body by injection molding, which contributes to cost reduction. In addition, the engagement force can be easily adjusted by adjusting the dimensions of the engagement protrusion and engagement groove, which ensures ease of attachment and detachment of the individual container.

[0024] Furthermore, the engagement projection and engagement groove fit together when the members first deform against the elasticity and then return due to the elastic restoring force, and because the return deformation due to the elastic restoring force occurs instantaneously, when the two fit together, a clicking sound can be generated and a clicking sensation can be given to the user's fingertips, so that the user can feel that the individual container is securely held in the main body, making it user-friendly.

[0025] In the present invention, each boss is provided withThe individual containers can be removed very easily by inserting a thin pin or rod through the through-hole to push out the individual containers. In addition, since the bottom plate of the main body has many through-holes, there is an advantage that distortion is prevented and dimensional accuracy is improved when the main body is molded by injection molding with synthetic resin. Furthermore, air can easily escape when attaching and detaching the individual containers, which also contributes to the ease of attaching and detaching the individual containers. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 shows a first embodiment, in which (A) is a perspective view with the lid open, and (B) is a perspective view with individual containers turned upside down. [Diagram 2] FIG. 1 shows a first embodiment, in which (A) is a rear view, (B) is a plan view, (C) is a front view, and (D) is a side view. [Diagram 3] 2(B) is a cross-sectional view taken along line IIIB-IIIB of FIG. 2(B), and FIG. 2(C) is a longitudinal front view of an individual container. [Figure 4] (A) is a bottom view of the compact, and (B) is a plan view showing an example of the arrangement of individual containers. [Diagram 5] (A) is a plan view showing an example of the arrangement of individual containers, (B) to (D) are plan views of second to fourth embodiments which are different examples of individual containers, (E) is a plan view of a fifth embodiment in which the individual containers are formed in a circular shape, and (F) is an oblique view of an individual container of the first reference example. [Figure 6] (A) is a partial plan view of a second reference example, which is a different example of a boss; (B) is a partial plan view of a fifth embodiment, which is a different example of a boss; (C) is an oblique view of a third reference example, which is a different example of an individual container; (D) is a vertical sectional front view of a fourth reference example, which is a different example of an individual container; (E) is a vertical sectional front view of a fifth reference example, which is a different example of an individual container; and (F) is a cross-sectional view taken along the FF direction of (E). [Figure 7] 1A is a plan view of the sixth embodiment in which an individual container for a brush is arranged, (B) is a partial plan view of the seventh embodiment, which is another example of an individual container for a brush, (C) is a plan view of the eighth embodiment, and (D) is a cross-sectional view taken along the line DD of (C). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] (1) Overview of the First Embodiment: Main Body Next, embodiments of the present invention will be described with reference to the drawings. First, a first embodiment shown in Fig. 1 to Fig. 5(A) will be described.

[0028] The basic structure of a compact is well known, and as shown in Figure 1, the compact is equipped with a shallow tray-like main body 1 that is square (horizontally elongated rectangular) in plan view and opens upward, and a lid 2 that opens and closes the main body 1 from above, and inside the main body 1, multiple individual containers 3 for cosmetics can be attached. The main body 1, lid 2, and individual containers 3 are all injection-molded products made of synthetic resin. It is formed in a rectangular shape in plan view. A mirror can also be attached to the inside of the lid.

[0029] The lid 2 is also in the shape of a shallow tray, and a bank portion 4 is formed on the top surface of the main body 1, into which the lid 2 fits with a very small clearance. In addition, left and right rearward protrusions 5 are formed on the rear surface of the main body 1, and the lid 2 is connected to the rearward protrusions 5 by left and right pins 6. For this reason, as shown in Figure 3(A), the rear of the lid 2 is formed with feet 7 that fit into the left and right rearward protrusions 5 of the main body 1, and the feet 7 are connected to the main body 1 by the pins 6.

[0030] The main body 1 is surrounded by walls, and a recess 8 that opens forward and upward is formed in the left and right middle part of the front wall, and a forward-facing engagement protrusion 9 is protruded from the upper part of the inner surface of the recess 8, while a plate piece 10 that fits into the recess 8 of the main body 1 is formed at the front end of the lid 2, and a rearward-facing engagement protrusion 11 that engages with the forward-facing engagement protrusion 9 is formed on the plate piece 10. The rearward-facing engagement protrusion 11 engages with and disengages from the forward-facing engagement protrusion 9 due to the elastic deformation of the plate piece 10.

[0031] On the bottom plate 12 of the main body 1 (on the bottom surface of the main body 1), protruding upwardsA large number of groups of bosses 13 are formed vertically and horizontally at the same pitch. In this embodiment, the bosses 13 are formed in six rows vertically and 12 rows horizontally. That is, the bosses 13 are formed in a multiple of three rows vertically and horizontally. Since the bosses 13 do not function at the four corners of the main body 1, it is possible to eliminate the bosses 13 at the four corners. Each boss 13 is formed in a cylindrical shape, and a central hole 14 penetrates the bottom plate 12. Also, as shown in FIG. 3(B), the outer peripheral surface of each boss 13 is provided with: Examples of the first engagement portion described in the claims include: A very shallow engagement groove 15 is formed around the entire periphery.

[0032] (2) Individual containers On the other hand, as shown in Fig. 1, the individual containers 3 have a square shape in plan view, and the length (width) of each side is set to a dimension that is slightly smaller than three times the arrangement pitch of the bosses 13. Therefore, as shown in Fig. 2(B), a large number of individual containers 3 can be arranged inside the main body 1 in rows vertically and horizontally in a state where they are closely spaced from one another.

[0033] Since the individual container 3 is square-shaped, it has four side panels (walls), but by making the four side panels protrude below the bottom panel 16, a rectangular frame 17 is formed when viewed from the bottom. Continuous in the circumferential direction The four parts of the frame 17 are Near On the inner surface, as an example of the second engagement portion described in the claims, an engagement protrusion 18 that fits into the engagement groove 15 of the boss 13 is formed. The engagement protrusion 18 is formed at the middle of each side in the width direction. Partially However, the position of the engagement protrusion 18 can be set arbitrarily. It is also possible to provide a plurality of engagement protrusions 18 on one side. As shown in Figure 1(B), each side plate constituting the frame 17 is connected to the bottom plate 16 by a pair of ribs 19. The ribs 19 are provided to prevent warping, but are not essential. When ribs 19 are provided, the number and arrangement positions of the ribs 19 can be set arbitrarily. As shown in FIG. 3(B), the protruding dimension of frame 17 is larger than the protruding dimension of boss 13, and therefore there is a gap between boss 13 and bottom plate 16.

[0034] In this embodiment, nine bosses 13 are enclosed by frame 17 of individual container 3, so that individual container 3 is accurately positioned. Furthermore, pairs of bosses 13 spaced vertically and horizontally engage with pairs of side plates constituting frame 17, so that individual container 3 is held in a state in which it will not come off main body 1 even if the compact is turned upside down, for example. Individual containers 3 are attached by pressing from above, causing frame 17 and bosses 13 to elastically deform. Each corner of the frame 17 is inscribed in one of the bosses 13 .

[0035] At this time, the frame 17 and boss 13 first deform against the elasticity, and then return to their original shape so that the engaging projection 18 fits into the engaging groove 15. However, since the return deformation occurs instantaneously due to the elastic restoring force, a clicking sound is generated when the engaging projection 18 fits into the engaging groove 15. This allows the user to know that the individual container 3 has been securely set. This makes it user-friendly.

[0036] In this embodiment, 3 pairs Since each boss 13 is sandwiched by the frame 17 from both the vertical and horizontal directions, the engagement state between each engagement protrusion 18 and engagement groove 15 is stable, and the individual containers 3 can be firmly held. Also, since the frame 17 is located between the rows of bosses 13, the main body 1 does not interfere with the bosses 13 while arranging many bosses 13 vertically and horizontally. Therefore, the individual containers 3 can be arranged by shifting them vertically and horizontally at the arrangement pitch of the bosses 13. In other words, the positions of the individual containers 3 can be set using the arrangement pitch of the bosses 13 as a unit. This increases the freedom of layout.

[0037] As shown by the dashed line in Figure 3(B), the individual container 3 can be removed by inserting a thin rod-shaped pusher 20 into the central hole 14 of the main body 1 and pushing the individual container 3. However, since the individual container 3 can be lifted up by placing a finger on its side, if even one individual container 3 is not attached (if there is even a partial void inside the main body 1), the individual container 3 can be removed without using the pusher 20. Note that the pusher 20 can be an everyday object such as a hairpin, tweezers, or an awl, or a dedicated object with a flange can be made to be attached compactly.

[0038] In this embodiment, as shown in Fig. 3(C), the outer circumferential surface of each individual container 3 is slightly tapered downward. This allows the upper ends of adjacent individual containers 3 to be in close contact with each other while widening the gap between their lower ends. This allows the individual containers 3 to move up and down while narrowing the gap between adjacent individual containers 3, improving the aesthetic appearance.

[0039] When individual containers 3 are formed so as to taper downward as shown in Fig. 3(C), when they are manufactured by injection molding, the fixed mold (cavity) is located at the bottom and the movable mold (core) is located at the top as seen in Fig. 3(C). Therefore, the outer peripheral surface of individual container 3 has a shape tapering downward due to the draft provided in the fixed mold. And, although the groove for forming engagement protrusion 18 is formed in the fixed mold, since the inner peripheral surface of frame body 17 has a draft, frame body 17 can be compressed and deformed to be removed from the mold (forced removal is possible).

[0040] As shown by the dashed line in Fig. 3(C), at least the peripheral portion of the bottom surface of the individual container 3 can be formed into a curved surface. In this case, it is possible to prevent cosmetics from remaining in the corners of the individual container 3. It is also possible to curve the entire bottom surface. This also applies to the other embodiments.

[0041] The individual containers 3 can be arranged in various layouts. In the example of use shown in Fig. 4(B), two individual containers 3 are arranged vertically with a space between them. In the example of use shown in Fig. 5(A), two individual containers 3 are arranged vertically on both the left and right sides of the main body 1, and two individual containers 3 are arranged diagonally between the groups of two individual containers 3. These are just examples, and consumers can select various layouts as needed.

[0042] (3) Other embodiments In the first embodiment, the individual containers 3 are formed in a square shape, but in the second embodiment shown in Fig. 5(B) and the third embodiment shown in Fig. 5(C), the individual containers 3 are formed in a rectangular shape when viewed from above (the long side is approximately twice as large as the short side). In the second embodiment of (B), the storage section for the cosmetic material is formed in a square shape, but in this case, the storage section may be formed into a single rectangular shape similar to the outer shape as shown by the solid line, or may be divided into two (or more) sections by providing a partition wall as shown by the dashed and dotted line.

[0043] In the third embodiment shown in (C), the outer shape is rectangular, while the cosmetic storage section is divided into two, each of which is circular. External shape The individual container 3 may be formed in a square shape and the cosmetic storage section in a circular shape. The individual container 3 may also be formed in a square shape that is twice as large as that in the first embodiment in both length and width. In this case, the storage section may be a single section in which the cosmetic or the puff is stored, or the storage section may be divided into multiple sections in which multiple types of cosmetic are stored.

[0044] In the above-mentioned embodiments, the individual containers 3 are formed in a rectangular shape. First reference example As shown in FIG. 1, the individual containers 3 may be formed in a circular shape. In this case, four notches 22 are formed in the frame 17 to avoid interference with the four bosses 13. It is also possible to form the four foot-like downward projections independent of one another. Needless to say, in the present invention, a single main body 1 can be fitted with a plurality of types of individual containers 3 with different shapes and sizes.

[0045] As shown in FIG. Second reference example In the embodiment shown in FIG. 6(B), the boss 13 is made up of multiple (four) split parts. With this configuration, the boss 13 is easily deformed elastically, so that the individual containers 3 can be easily attached and detached while maintaining rough dimensional accuracy. 5In this embodiment, the boss 13 is formed in a cylindrical shape, and the central hole 14 is set to have a different diameter (a step) such that the diameter of the portion 14a located on the bottom plate 16 is larger than the diameter of the portion 14b penetrating the bottom plate 12. In this case as well, the boss 13 becomes easier to deform by having a thinner wall thickness.

[0046] As shown in Figure 6(C) Third reference example In the example shown in FIG. 1, the four side plates constituting the frame 17 of the individual container 3 are divided by two slits 23 each, and the intermediate piece 17a located in the middle is formed with the engagement protrusion 18. With this configuration, the intermediate piece 17a is more likely to bend and deform, making it easier to attach and detach the individual container 3.

[0047] The first step shown in FIG. 4 In the reference example, an engagement groove 15 is formed in the frame 17 of the individual container 3, and an engagement protrusion 18 is formed in the boss 13 (not shown). In this case, engagement grooves 15 are also formed in the corner portions of the frame 17. In this embodiment, the fixed mold (cavity) 24 is fitted into the individual container 3 from above, and therefore, the individual container 3 is formed with a draft angle that tapers upward.

[0048] this Reference example In the case of the molded product, the projections that form the engagement grooves 15 are formed on the movable die (core), but since the product is pushed out from the movable die after being separated from the fixed die after molding, the individual containers 3 are allowed to swell and deform outward when they are separated from the movable die. This has the advantage that the engagement grooves 15 can be reliably formed by so-called forced extraction. The same applies when forming the engagement projections 18 on the frame 17.

[0049] During molding, the individual containers 3 are engaged with the movable mold, so the fixed mold can be easily separated without forming a draft on the outer periphery. In other words, even without forming a draft on the fixed mold (cavity), the mold can be easily separated from the cavity, and the product can be removed without any trouble.

[0050] The first step shown in FIG. 5In the reference example, an internal frame 25 is formed on the underside of the individual container 3 as downward protrusions that abut against the four bosses 13 from the inside, and engaging protrusions 18 are formed on the outer circumferential surface of the internal frame 25. Therefore, in this reference example, the internal frame 25 is sandwiched and stabilized in two directions, vertically and horizontally, by pairs of bosses 13. As shown by the dashed dotted lines in (F), in order to increase the stability of the individual container 3, it is possible to form an external frame 26 that is continuous with the four periphery of the individual container 3.

[0051] The first one shown in FIG. 6 In this embodiment, a rectangular individual container 27 for a brush is disposed separately from the individual container 3 for cosmetics. The vertical dimension of the individual container 27 for a brush is smaller than the internal vertical dimension of the main body 1, so that a space 28 is provided between the short side of the individual container 27 for a brush and the inner surface of the main body 1.

[0052] Therefore, the individual brush container 27 can be lifted up by inserting a fingertip into the space 28. When the individual brush container 27 is removed, the sides of the two individual cosmetic containers 3 are exposed, and the individual containers 3 can be removed by hooking a finger on the sides. In this way, the individual containers 3 can be easily replaced or rearranged.

[0053] The reason for forming the void 28 in FIG. 7(A) is to facilitate removal of the individual brush container 27. 7 As shown in the embodiment, a recess 29 into which a fingertip can be inserted may be formed on the short side of the individual brush container 27.

[0054] The first step shown in FIG. 8 In this embodiment, as another means for facilitating removal of the individual containers 3, finger hook recesses 30 are formed in the left and right rearward protruding portions 5 formed on the main body 1, communicating with the inside of the main body 1. Also, in order to facilitate the hooking of fingers on the individual containers 3 when removing the individual containers 3, a meat-thinned portion 31 is formed on the outer periphery of the individual containers 3, leaving the upper end portion. The meat-thinned portion 31 can also be applied to other embodiments.

[0055] Although the embodiment of the present invention has been described above, the present invention can be embodied in various other ways. do. [Industrial Applicability]

[0056] The present invention can be embodied compactly and is therefore industrially applicable. [Explanation of symbols]

[0057] 1 Main unit 2 lid 3 Individual containers 5. Rearward protrusion 12 Bottom plate of the main body 13 Boss (upward protrusion) 14 center hole 15 Engagement groove 16 Bottom plate of individual container 17 Frame (downward protrusion) 18 Engagement protrusion

Claims

[Claim 1] The container has a tray-like main body that is rectangular in plan view and opens upward, and a group of individual containers that are rectangular in plan view and detachably disposed inside the main body, A group of bosses, each having a circular shape in plan view and a central hole penetrating vertically, are aligned vertically and horizontally at the same pitch and protrude upward from the bottom surface of the main body, while the length of the four sides of each of the individual containers is set to a width dimension that is slightly smaller than an integer multiple of three or more times the pitch of the bosses, and a frame body inscribed in the group of bosses is protruded downward from the four sides of each of the individual containers in a continuous, uninterrupted manner around the entire circumference, The individual containers are attached to and detached from the main body by engaging and detaching a first engagement portion formed over the entire outer circumferential surface of the boss with a second engagement portion partially formed on the inner circumferential surface of the frame body against elasticity, and the first engagement portion and the second engagement portion are an engagement protrusion on one side and an engagement groove on the other side, and are compact; The individual containers have an outer peripheral surface that is tapered downward due to a draft angle during molding, and each corner portion of the frame is inscribed with one of the bosses different from the others, and at least one boss different from the boss inscribed in the corner portion is inscribed in a portion between one end and the other end of each side of the frame, and the second engagement portion is partially formed on the inner surface of the portion between the one end and the other end of each side of the frame. and a downward protruding dimension of the frame body is larger than an upward protruding dimension of the boss, and a gap is provided between the bottom plate of each individual container and the boss. compact.

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