JP5095170B2 - Logistics container - Google Patents

Description

  The present invention relates to a physical distribution container suitable as a cold storage container mainly used for transportation and storage of foods and foods.

  For example, foaming with heat insulation is used for the delivery and transfer of food, foodstuffs and other various goods from consumer cooperatives (hereinafter referred to as co-ops) to private homes, or for transporting frozen foods and foods while keeping them cold. Resin cold storage containers are generally used, and are usually used by containing foods to be transported together with a refrigerant. Containers used for the delivery and movement of Co-op products often have an internal volume of about 10 to 25 liters and are generally rectangular parallelepiped.

  Such a container is composed of a container body having a rectangular plane and a lid body fitted and attached to the opening of the container body. The fitting structure of the lid body with respect to the container body includes a side wall of the container body. Some of the fitting portions formed along the opening at the upper end are fitted with a rectangular fitting wall provided on the lower surface of the lid on at least one of the inside and the outside thereof. However, since the material is made of foamed resin and the opening and closing of the lid is repeated many times, when the fitting wall has the same thickness over the entire circumference including the corner portion, the most force is applied during fitting. The corner portion is deformed or missing, and the fitting state is loosened, so that the lid body is liable to float or come off, and the sealing performance when the lid is closed is also lowered. For this reason, when the container is left outside for use in the delivery of commodities by the co-op, there is a risk that the lid may come off or dust or rainwater may enter. On the other hand, if the fitting strength of the fitting wall is made too strong, it cannot be easily fitted, and once fitted, it cannot be easily removed, making it difficult to open and close the lid. Become.

  In recent years, in such foamed plastic containers, for the purpose of ensuring the closed state, an upward fitting protrusion is provided around the opening at the upper end of the side wall of the container body, and correspondingly fitted to the lower surface of the lid. In a structure in which a fitting groove composed of inner and outer walls as a mating wall is provided around the fitting protrusion and the fitting groove, the inner and outer surfaces of the fitting protrusion and the A container has been proposed in which engaging portions having concave and convex shapes corresponding to each other are formed on the side surfaces of the inner and outer walls of the fitting recess, and once fitted, the container is brought into a locked state so as not to be easily removed ( Patent Document 1).

However, in the case of the proposed container, the engaging portion by the uneven shape is continuous over the entire length of the fitting protrusion and the fitting groove, and is provided on both inner and outer side surfaces of the fitting protrusion. It is. For this reason, when fitting the fitting ridge and the fitting groove, the whole including the corner portions of the inner and outer walls of the fitting groove is elastically deformed as the fitting ridge enters. In other words, the resistance to the mating is large, and a strong force is required, so that the mating is difficult, and once it is mated, it cannot be easily removed. Moreover, when the rib which regulates the elastic deformation of the inner wall of the fitting recess is provided and only the outer wall is elastically deformed, the entire inner wall is not elastically deformed, so that it becomes difficult to fit.
JP-A-8-72944

  The present invention has been made in view of the above, and as a distribution container made of foamed resin mainly used as a cold storage container or the like for commodity delivery of the Co-op, it is used as a lid with respect to a fitting portion provided in the opening of the container body. In the structure for fitting the fitting wall, the lid can be easily closed and opened by fitting the fitting wall of the lid body, and a predetermined area is determined depending on the area of each corner portion of the fitting wall. Sealing that retains the fitting strength, can fit tightly against the fitting part of the container body, and does not loosen easily even after repeated closing and opening operations, and does not loosen over a long period of time Provided is a physical distribution container capable of maintaining a closed state with good properties.

The physical distribution container of the present invention that solves the above problems is a container made of foamed resin comprising a flat rectangular container body that opens upward, and a lid that can be fitted to the opening of the container body, On the lower surface of the lid body , a rectangular shape formed on a ridge along the inner edge of the peripheral edge portion that abuts the upper end surface of the opening portion that fits inside the fitting portion provided in the opening portion of the container body. The wall portion of the side region other than the corner portion in the fitting wall has a thickness that can be elastically deformed during the opening and closing operation, and the region of each corner portion in the fitting wall includes: The thickness in the direction orthogonal to the mating surface is formed on the inner side of the rectangle made of the mating wall as a thicker portion than the thickness of the wall portion of the side region, and is easier than the wall portion of the side region. It is characterized by not being deformed.

  According to this physical distribution container, the wall portion of the four side areas other than the corner portion in the fitting wall of the lid body is thinner than the corner portion region and can be elastically deformed during opening and closing operations. Opening and closing operations can be easily performed by fitting and removing the fitting wall with respect to the fitting portion of the main body. In addition, in the areas of the respective corners at the four corners of the fitting wall, the wall is thicker than the wall part of the side region, and the elastic force against the elastic deformation is large and does not easily deform. In the state where the container is fitted to the fitting part of the container body, the area of the corner part serves as a support part for the four corners. On the other hand, it can be fitted without looseness. In addition, the deformation of the area of the corner of the fitting wall is restricted, so that the fitting is not easily lost even if the opening and closing operations are repeated, and the fitting state that does not loosen for a long time is maintained. To do.

  In the physical distribution container, an engaging convex portion and a concave portion that are fitted to each other at the time of fitting are provided on the fitting surface of the fitting wall of the lid and the fitting surface of the fitting portion of the container body. Can be. As a result, in the state where the fitting wall is fitted to the fitting portion of the container body, the engaging convex portion and the concave portion are fitted and locked, and the closed state is further stabilized. It can surely prevent loosening and detachment.

  In particular, of the four corners in the fitting wall of the lid, the fitting surface near the two corners on one diagonal, and the same diagonal as the fitting wall in the fitting part of the container body It is preferable that an engaging convex portion and a concave portion that are fitted to each other at the time of fitting are provided only on the fitting surfaces in the vicinity of the two corner portions. That is, in the closed state, the lid body can be held in a stable attached state without loosening or coming off as described above, and the engaging convex part and the concave part are not provided during the opening operation. If it is lifted and removed from the corner portion on the other diagonal, the corner portion where the engaging convex portion and the concave portion are formed can be pulled out as a result of the removal of the corner portion. The whole body can be easily removed.

  At this time, when a notch for finger hooking is provided on the lower surface side of the outer periphery of the lid body or the upper surface side of the container body of the other two corners of the other diagonal not provided with the engaging convex portion or concave portion, The corner portion where the engaging convex portion and the concave portion are not provided can be lifted using the cutout portion, and the lid opening operation is further facilitated.

  As described above, the engaging convex portion and the concave portion are located on the fitting surface portion of the wall portion of the side region close to the corner portion region of the fitting wall and the fitting portion corresponding thereto. What is provided in the location of the surface is preferable. That is, when the fitting wall is fitted to the fitting portion of the container body, the wall portion in the side region of the fitting wall may have the engaging convex portion protruding from the fitting surface as described above. Is thinner than the corner area and can be elastically deformed to some extent, so that the elastic deformation of the wall part can be fitted or removed without any problem without causing the convex part to be caught, and also prevents the convex part from being lost. It can also be done.

  The fitting surface near the two corners on one diagonal in the fitting wall and the fitting near the two corners on the same diagonal as the fitting wall in the fitting part of the container body. The effect obtained by providing the engaging convex portion and the concave portion only on the mating surface can be said even when each corner portion of the fitting wall is not formed as a thick portion larger than the thickness of the wall portion of the side region. . Also in this case, a finger notch is provided on the lower surface side of the outer periphery of the lid body or the upper surface side of the container body of the other two corners not provided with the engaging convex portion or concave portion. It is preferable that the corner portion where the engaging convex portion and the concave portion are not provided can be lifted using the notch portion, and the lid opening operation can be performed more easily.

  According to the physical distribution container of the present invention, the wall portion of the side region other than the corner portion of the fitting wall of the lid can be elastically deformed to some extent during the fitting and unplugging operation, and the lid is opened by fitting the lid to the container body. In addition, the lid can be easily operated, and the corners of the fitting wall of the lid have a large elastic force that resists elastic deformation and does not easily deform. Thus, it can be securely fitted to the fitting portion of the container main body without looseness, and the airtightness in the closed state can be maintained well. Further, even when the closing and opening operations by the fitting of the fitting wall are repeated, the fitting is not easily lost, and a fitting state with good sealing property that does not loosen for a long time can be maintained.

  Next, embodiments of the present invention will be described based on examples shown in the drawings.

  1 is a perspective view of a container body and a lid body of a physical distribution container according to the present invention, FIG. 2 is a perspective view in a closed state, FIG. 3 is a plan view of the container body, FIG. 4 is a bottom view of the lid body, FIG. 6 is an enlarged view of a part of the previous figure, FIG. 6 is a half vertical front view of the container main body and the lid body in a separated state, FIG. 7 is a half vertical side view of the container main body and the lid body in a separated state, and FIG. 9A and 9B are enlarged cross-sectional views of a part having a convex part for engagement and a concave part before and after fitting, respectively. is there.

  This physical distribution container A is a foamed resin container, and as shown in the figure, a flat rectangular container body 10 that opens upward, and a lid 20 that can be fitted to the opening 10 a of the container body 10. And more.

  The container body 10 is integrally formed of foamed resin and has a box shape with a bottom portion 11 and four side walls 12a, 12b, 12c, and 12d, and an upper end portion of the side wall is an inner periphery thereof. It is formed as a fitting portion 13 for fitting a lid with the surface as a fitting surface 14. Reference numerals 13a, 13b, 13c, and 13d denote corner portions of the fitting portion 13. The fitting portion 13 is formed by notching the inner side or the outer side of the upper end portion of the side wall, and having a convex wall shape thinner than the side walls 12a, 12b, 12c, 12d, for example, a convex shape having a thickness of about ½ of the thickness of the side wall. It may be formed in a wall shape.

  In the case of the figure, among the four side walls 12a, 12b, 12c, 12d, the outer surfaces of the opposite side walls 12a, 12c on the short side are recessed, and the convex portion 15 is formed on the inner surfaces of the side walls 12a, 12c. A large number of longitudinal ribs arranged in parallel at a predetermined interval on the inner surfaces of the opposite side walls 12b and 12d formed on the long side so as to secure a space for ventilation between the inner wall and the container. 16 is formed. The bottom portion 11 is formed with a large number of convex portions 17 for receiving the contents in parallel in the vertical and horizontal directions.

  The lid 20 is integrally formed of the same foamed resin as described above, and the lower surface of the lid 20 is fitted along the inner edge of the peripheral edge 20a that abuts the upper end surface of the opening 10a of the container body 10. It has a rectangular fitting wall 23 that fits inside the joint portion 13.

  The fitting wall 23 includes four corner portions 23a, 23b, 23c, and 23d, and wall portions 25a, 25b, 25c, and 25d in side regions other than the corner portions 23a, 23b, 23c, and 23d. And the thickness of the wall portions 25a, 25b, 25c, 25d in the side region, in particular, the thickness T1 in the direction perpendicular to the fitting surface 24 with the fitting portion 13, is the fitting portion of the container body 10. The thickness is such that the entire thickness can be elastically deformed so as to be bent slightly inward against the inherent elastic force of the material by the pressure acting on the fitting surface 24 when the lid is closed by the fitting to 13.

  Further, a predetermined region of each corner portion 23a, 23b, 23c, 23d in the fitting wall 23 has a thickness T2 in a direction orthogonal to the fitting surface 24, so that the side wall portions 25a, 25b, 25c. 25d having a thickness larger than the thickness T1, and having an elastic force that resists elastic deformation larger than that of the side wall portions 25a, 25b, 25c, and 25d, it does not easily deform. In addition, the corner portions 23a, 23b, 23c, and 23d are formed so that necessary fitting strength with respect to the fitting portion 13 can be maintained.

  That is, the fitting wall 23 is slightly elastic against the inherent elastic force of the foamed resin as the material for the ease of fitting and unplugging operation with respect to the fitting portion 13 of the container body 10. What can deform | transform and can maintain a fitting state favorably is desirable.

Therefore, with respect to the thickness T1 of the side wall portions 25a, 25b, 25c, and 25d in the fitting wall 23, the entire thickness is obtained by the pressure acting on the fitting surface 24 during the closing operation (fitting operation). For example, a 12 mm diameter jig is attached to the push side of a push-pull gauge (manufactured by Imada Seisakusho, model PSS) and pushed with a force of 2.5 kgf (24.5 N). (0.022 kgf / mm ² ), about 1 mm can be elastically deformed (displaced). For this reason, the thickness T1 of the wall portions 25a, 25b, 25c, and 25d in the side region is, for example, the fitting when the material is foamed polystyrene having a foaming ratio of 45 times. It is 0.5 to 1.2 times thicker than the protruding dimension of the wall 23, preferably the same as or slightly smaller than the protruding dimension.

  And about the thickness T2 of each corner | angular part 23a, 23b, 23c, 23d of the said fitting wall 23, as above-mentioned, it is larger than thickness T1 of the wall part 25a, 25b, 25c, 25d of the said side area, Preferably, the thickness is about 2.0 to 4.0 times the thickness T1, and the elastic force against the elastic deformation is increased to ensure a sufficient fitting strength for the fitting portion 13 of the container body 10. It is formed to do.

  In addition, as shown by a chain line in FIGS. 4 and 5, a predetermined value for allowing the wall portion to be elastically deformed inside the side wall portions 25 a, 25 b, 25 c, 25 d of the side wall of the fitting wall 23. There may be a case in which a convex wall portion 27 is provided between the adjacent corner portions 25 a, 25 b, 25 c, and 25 d with the groove-shaped concave portion 26 having a width, and the lid body 20 that is inward of the convex wall portion 27. In some cases, the lower surface is formed so as to be flush with the lower surface of the convex wall portion 27. Further, when the lengths of the wall portions 25a, 25b, 25c, and 25d in the side region are long, in order to restrict excessive elastic deformation, the inner side of a required portion such as a central portion in the length direction of the wall portion. Reinforcing ribs (not shown) can also be provided on the.

Furthermore, the engaging convex part 31 and the recessed part 32 which are mutually fitted to the fitting surface 24 in the fitting wall 23 of the lid 20 and the fitting surface 14 in the fitting part 13 of the container body 10 at the time of fitting. Is provided. In particular, in the case of the illustrated embodiment, two corner portions, for example, corner portions, which are diagonally opposite to each other in a point-symmetric position among the four corner portions 23a, 23b, 23c, and 23d in the fitting wall 23, are shown. Of the fitting surfaces 24 in the vicinity of 23a, 23c and the corners 13a, 13b, 13c, 13d in the fitting portion 13 of the container body 10, the same diagonal as the fitting wall 23 (matches when closed) ) Only two corner portions, for example, the fitting surface 14 near the corner portions 13a and 13c, are provided with an engaging convex portion 31 and a concave portion 32 that are fitted and locked to each other when the lid 20 is fitted to the container body 10. It has been. In the figure, an engagement convex portion 31 is provided on the side of the fitting surface 24 of the fitting wall 23 of the lid 20 so as to be convex in a direction orthogonal to the fitting surface, As shown in the figure, the engagement concave portion 32 formed in a recess in the direction orthogonal to the fitting surface is provided on the fitting surface 14 side of the ten fitting portions 13.

  Thereby, in the state which fitted the said fitting wall 23 to the fitting part 13 of the container main body 10, the said convex part 31 for engagement and the recessed part 32 will be fitted, and it will be in a locked state, and a closed state is stable. You can hold it well. In addition, when the lid opening operation is performed, the corner portion 23b is lifted and removed from the opposite corner portions 23b and 23d where the engaging convex portion 31 and the concave portion 32 are not provided. , 23d as a trigger, the entire lid 20 can be easily removed.

  The engaging convex portion 31 and the concave portion 32 may be located at any position as long as the engaging surface is in the vicinity of the diagonal corner portion. From the viewpoint of easiness, as shown in the illustrated embodiment, each of the side wall portions 25d, 25a or 25b, 25c close to the corner portion 23a or 23c region of the fitting wall 23 of the lid body 20 is fitted. It is preferable to provide in the location of the mating surface 24 and the location of the fitting surface 14 of the fitting part 13 of the said container main body 10 corresponding to this.

  That is, the engaging convex portion 31 is provided on one of the fitting surface 24 in the corner portion 23a or 23c of the fitting wall 23 and the fitting surface 14 of the fitting portion 13 corresponding thereto. The corner portion 23a or 23c is formed as a thick portion and hardly elastically deforms in the direction orthogonal to the fitting surface 24. When fitting, the convex portion 31 is caught and the convex portion 31 may be lost, but as described above, the location of each fitting surface 24 of the side wall portions 25d, 25a or 25b, 25c, Correspondingly, when the engaging convex portion 31 is provided at one of the portions of the fitting surface 14 of the fitting portion 13 of the container body 10, the wall portions 25d, 25a or 25b, 25c can be elastically deformed. Then, the engaging convex portion 31 is moved to the other side. Will be relatively easy to fit against the part 32, it becomes possible to turn prevents the loss of the convex portion 31.

  The shapes and positions of the engaging convex portions 31 and the concave portions 32 are formed in consideration of the above-described effects. For example, with respect to the position of the convex portion 31, from the end position of the corner portion 23a or 23c region of the fitting wall 23 (the boundary between the corner portion region and the side region), the side wall portion 25d, The distance from the end position of the corner portion region to the end portion of the convex portion 31 is preferably 0 to 30 mm, particularly preferably between about 1/3 of the length of 25a or 25b, 25c. It arrange | positions in the position of 5-20 mm. Further, the shape of the convex portion 31 can be implemented by various shapes such as a circle, an ellipse, or a square, but in the case of the figure, a locking effect, strength, etc. in the fitted state with the concave portion 32. From this point, the protrusion height is set to 1.5 to 3.0 mm, preferably about 2.0 mm, and the convex portion is long in the length direction of the side wall portions 25d, 25a or 25b, 25c when viewed from the front. It has a rectangular shape of about 10 to 50 mm, preferably 20 to 40 mm. Furthermore, the cross-sectional shape of the convex portion 31 may be a convex shape or a trapezoidal shape having the same thickness as a whole, but as shown in the figure, the upper and lower portions form an inclined surface and are rounded at the base portion. Those having, for example, a mountain shape that is smoothly continuous with the fitting surface 24 are more preferable because they are not caught during the fitting operation, the fitting resistance is reduced, and chipping is difficult to occur.

  The engaging convex portion 31 may be provided at a point target position of only one of the wall portions 25d, 25a or 25b, 25c in the side region connected to the corner portion 23a or 23c of the fitting wall 23. However, it is preferable to carry out by providing both of the side wall portions 25d and 25a or 25b and 25c from the viewpoint of the stability of the fitted state.

  In the case of the physical distribution container A of the illustrated embodiment, the upper surface of the lid body 20 is formed with a concave portion 29 into which the convex portion 19 on the lower surface of the bottom portion 11 of the container body 10 is fitted. The movement can be regulated when loading. Further, a recess 18 is formed on the outer side of the upper end of the side wall 12a, 12c on the short side of the container body 10, so that a finger can be put on the lid 20 during the lid opening operation. Instead of the recess 18, a notch (not shown) may be formed on the lower end side of the outer surface on the short side of the lid 20.

  Further, the fitting surface 24 in the vicinity of the two corners 23 a and 23 c on one diagonal in the fitting wall 23 and the same diagonal as the fitting wall 23 in the fitting part 13 of the container body 10 are present. In the case where the engaging convex portion 31 and the concave portion 32 that are fitted and locked to each other are provided only on the fitting surface 14 in the vicinity of the two corner portions 13a and 13c, as in the embodiment of FIGS. In addition, the lower surface side of the outer periphery of the lid body 20 or the upper surface side of the outer periphery of the container body 10 at the other two corners on the other diagonal side where the engaging convex portion 31 or the concave portion 32 is not provided (the lower surface side of the outer periphery of the lid body is shown). ) Can be provided with a notch 28 for hooking fingers. In this case, when the lid body 20 fitted to the container body 10 is removed and opened, the lid body 20 can be lifted from the corner portion by placing a finger on the notch portion 28, and the removal operation can be easily performed.

  Furthermore, as shown in FIG. 12, each corner part 23a, 23b, 23c, 23d in the fitting wall 23 of the cover body fitted to the fitting part 13 of the container body 10 is a wall part 25a, Even in the case where it is not formed as a thick part larger than the thickness of 25b, 25c, 25d, the fitting surface in the vicinity of the two corner parts 23a, 23c on one diagonal of the fitting wall 23 is the same as described above. 24 and the fitting surface 13 in the fitting portion 13 of the container body 10 that is fitted and locked to each other only on the fitting surface 14 in the vicinity of the two corner portions 13a and 13c at the same diagonal as the fitting wall 23. It can be carried out by providing the convex portion 31 and the concave portion 32. In addition, the lower surface side of the outer periphery of the lid 20 or the upper surface side of the outer periphery of the container body 10 at the other two corners on the other diagonal side where the engaging convex portion 31 or the concave portion 32 is not provided (the lower surface side of the outer periphery of the lid body is shown). ) Can be provided with a notch 28 for hooking, and the same effect as described above can be obtained.

  Examples of the foamed resin that is a constituent material of the container body 10 and the lid 20 include styrene-modified polyolefin resin, polystyrene, high impact polystyrene, styrene-ethylene copolymer, styrene-maleic anhydride copolymer, and styrene-acrylonitrile. Polystyrene resins such as copolymers, polyolefin resins such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymers, and foams of various synthetic resins such as polyester resins such as polyethylene terephthalate can be used. Especially, the molded object by the bead foam of a styrene modified polyolefin resin is used suitably. The styrene-modified polyolefin resin is obtained by impregnating and polymerizing a polyolefin resin particle with a styrene monomer. Among the styrene-modified polyolefin resins, a styrene-modified polyethylene resin is preferable, for example, a styrene component The ratio is 40 to 90% by weight, preferably 50 to 85% by weight, more preferably 55 to 75% by weight. The foaming ratio of the foam is preferably 10 to 70 times.

  The molded product of the styrene-modified polyolefin resin bead foam is stronger than the molded product of the polypropylene resin beads having the same expansion ratio, and the shrinkage rate when a container having a depth exceeding 500 mm is molded. Low dimensional accuracy. Furthermore, there is an advantage that powder due to rubbing is less likely to be produced as compared with foamed molded products of styrene resin beads.

  According to the physical distribution container A of the above-described embodiment, in the state where the food and the like to be transported and moved are accommodated in the container main body 10, the lid is formed inside the fitting portion 13 of the opening 10 a of the container main body 10. The 20 fitting walls 23 are fitted and closed. During the lid closing operation, the wall portions 25a, 25b, 25c, and 25d in the four side regions other than the corner portion of the fitting wall 23 of the lid body 20 are thinner than the regions of the corner portions 23a, 23b, 23c, and 23d. Since it can be elastically deformed during opening and closing operations, as shown in the illustrated embodiment, the side wall portions 25a, 25b, 25a, 25b in the vicinity of the two opposite corner portions 13a, 13c of the fitting wall 23 are provided. Even if the engagement convex portion 31 and the concave portion 32 are provided on the fitting surface 14 of 25c and 25d and the fitting surface 14 of the fitting portion 13 corresponding thereto, the wall portion 25a, The fitting wall 23 can be easily fitted inside the fitting portion 13 of the container body 10 by utilizing the elastic deformation of 25b, 25c, 25d.

  In addition, the four corners 23a, 23b, 23c, and 23d of the fitting wall 23 are thicker than the walls 25a, 25b, 25c, and 25d of the side regions and have elastic force that resists elastic deformation. Since the fitting wall 23 is fitted to the fitting portion 13 of the container main body 10 as described above, the corner portions 23a, 23b, 23c, and 23d are provided at the four corner support portions so that the fitting wall 23 is fitted to the fitting portion 13 as described above. As a result, a predetermined fitting strength can be maintained, and the fitting portion 13 of the container body 10 can be firmly and loosely fitted. In particular, as in the illustrated embodiment, when the engaging convex portions 31 and the concave portions 32 are provided on the fitting surfaces 24 and 14 of both the fitting wall 23 and the fitting portion 13, At the same time as the fitting wall 23 is fitted, the engaging convex part 31 and the concave part 32 are also fitted and locked, so that the lid can be kept in a more stable closed state and the sealing property can be kept well. . Further, since the regions of the corner portions 23a, 23b, 23c, and 23d of the fitting wall 23 are thick and the deformation is restricted, the fitting can be easily made even if the opening and closing operations are repeated. Therefore, it is possible to maintain a closed state with a good sealing property that does not loosen over a long period of time.

  Furthermore, the lid opening operation can be easily performed using the elastic deformation of the wall portions 25a, 25b, 25c, and 25d in the side region as described above. In particular, as described above, the fitting wall 23 of the lid 20 and the two corner portions 23a, 23c on one diagonal of the fitting portion 13 of the container body 10; the fitting surfaces 24 in the vicinity of 13a, 13c, 14, when the engaging convex portion 31 and the concave portion 32 are provided, the lid 20 is lifted from the corner portions 23b, 23 side where the engaging convex portion and the concave portion are not provided. Thus, the entire lid 20 can be easily removed.

  In the above-described embodiment, the case where the fitting wall 23 of the lid 20 is fitted inside the fitting portion 13 of the container body 10 has been described. However, the fitting wall of the lid is fitted to the container body. Even in the case where the outer portion is fitted to the joint portion, the wall portion of the side region other than the corner portion is elastically deformed by the pressure acting on the fitting surface during the opening and closing operation, as in the above-described embodiment. Further, the thickness in the direction perpendicular to the fitting surface is formed as a thicker portion than the wall portion of the side region, and an elastic force that resists elastic deformation is formed in the side region. The wall portion can be made larger than the wall portion, and the fitting strength can be held at the corner portion.

  Also in this case, the fitting surface in the vicinity of the corner portion opposite to the point target position, in particular, the fitting surface portion of the wall portion in the side region, and the corresponding fitting surface of the fitting portion of the container body. In this place, an engaging convex portion and a concave portion that are fitted to each other when the lid is fitted can be formed in the same manner as described above.

  The physical distribution container of the present invention can be suitably used as a cold storage container for delivery and movement from the distribution center of commodities to a co-op, or a container for transporting frozen food or food while being cooled.

It is the perspective view which isolate | separated the container main body and lid of the physical distribution container which concern on this invention. It is a perspective view of a closed state same as the above. It is a top view of a container main body. It is a bottom view of a lid. It is a one part enlarged view of a previous figure. It is a half longitudinal section front view of the separation state of a container main part and a lid. It is a half longitudinal section side view of the separation state of a container main part and a lid. It is sectional drawing of the state which fitted the cover body to the opening part of the container main body. (A) It is a partially expanded sectional view of the part which has the convex part for engagement and the recessed part of each of (b) before fitting, and after fitting. It is the perspective view which isolate | separated the container main body and cover body of the other Example of the physical distribution container of this invention. It is a perspective view of a closed state same as the above. It is the perspective view which isolate | separated the container main body and cover body of the other Example of the physical distribution container of this invention.

Explanation of symbols

  A ... Physical distribution container, 10 ... Container body, 10a ... Opening, 11 ... Bottom, 12a, 12b, 12c, 12d ... Four side walls, 13 ... Fitting part, 13a, 13b, 13c, 13d ... Corner part, 14 ... Fitting surface, 15 ... convex surface portion, 16 ... convex rib, 17 ... convex portion, 18 ... concave notched portion, 19 ... convex portion on the lower surface, 20 ... lid body, 20a ... peripheral edge portion, 23 ... fitting wall, 23a , 23b, 23c, 23d ... corner portion, 24 ... mating surface, 25a, 25b, 25c, 25d ... side wall portion, 26 ... groove-like recess, 27 ... convex wall portion, 28 ... notch portion, 29 ... Recessed portion, 31... Convex portion for engagement, 32... Concave portion for engagement, T1...

Claims (7)

A container made of foamed resin comprising a flat rectangular container body that opens upward, and a lid that can be fitted to the opening of the container body,
On the lower surface of the lid body , a rectangular shape formed on a ridge along the inner edge of the peripheral edge portion that abuts the upper end surface of the opening portion that fits inside the fitting portion provided in the opening portion of the container body. Have mating walls,
The wall portion of the side region other than the corner portion in the fitting wall has a thickness that can be elastically deformed during opening and closing operations, and the corner portion region in the fitting wall is orthogonal to the fitting surface. It is formed in the inside of the rectangle which consists of a fitting wall as a thick part larger than the thickness of the wall part of the above-mentioned side field, and does not change easily from the wall part of the above-mentioned side field. Logistics container.   The engagement convex part and recessed part which mutually fit at the time of a fitting are provided in the fitting surface in the fitting wall of the said cover body, and the fitting surface of the fitting part of the said container main body. Logistics containers.   Of the four corners in the fitting wall of the lid, the fitting surface near the two corners on one diagonal and the same diagonal as the fitting wall in the fitting part of the container body The physical distribution container according to claim 1, wherein an engaging convex portion and a concave portion that are fitted to each other at the time of fitting are provided only on the fitting surfaces near the two corner portions.   The finger-hanging cutout is provided on the lower surface side of the outer periphery of the lid body or the upper surface side of the container body of the other two corners on the other diagonal side where the engaging convex portion or concave portion is not provided. Logistics container.   The engaging convex portion and the concave portion are located at the fitting surface portion of the wall portion of the side region close to the corner portion region of the fitting wall and the corresponding fitting surface portion of the fitting portion. The physical distribution container according to any one of claims 2 to 4, which is provided. A container made of foamed resin comprising a flat rectangular container body that opens upward, and a lid that can be fitted into the opening of the container body,
On the lower surface of the lid body , a rectangular shape formed on a ridge along the inner edge of the peripheral edge portion that abuts the upper end surface of the opening portion that fits inside the fitting portion provided in the opening portion of the container body. A fitting wall, and a fitting surface in the vicinity of two corners on one of the four corners of the fitting wall of the lid, and the fitting in the fitting part of the container body Only the fitting surface near the two corners on the same diagonal as the wall is provided with an engaging convex part and a concave part that fit together at the time of fitting ,
The physical distribution container, wherein the engaging convex portion is formed convex in a direction orthogonal to the fitting surface, and the engaging concave portion is formed concave in a direction orthogonal to the fitting surface .   The finger-hanging cutout is provided on the lower surface side of the outer periphery of the lid body or the upper surface side of the container main body of the other two corner portions on the other diagonal side where the engaging convex portion or concave portion is not provided. Logistics container.

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