JP6682290B2 - Portable container - Google Patents

Description

  The present invention relates to a portable container.

  The portable container is used, for example, for school lunches, employee cafeterias, etc., and stores and transports a large amount of food. Specifically, the portable container includes, for example, as described in Patent Document 1, a container that stores and carries food, and a lid of the container.

  Further, for example, as described in Patent Document 2, there is a heat-insulating food container that accommodates an inner container containing food in an outer container.

JP-A-11-137452 JP, 2011-235934, A

  In the portable container described in Patent Document 1, since a large amount of food is stored in a container and transported, it is assumed that the container is held by both hands. If the dual structure of the inner container and the outer container described in Patent Document 2 is applied to the portable container described in Patent Document 1, the inner container is surrounded by the outer container over the entire circumference. Therefore, it is difficult to take out the inner container from the outer container.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a portable container in which the inner container can be easily taken out from the outer container.

In order to achieve the above object, a portable container according to the present invention is formed with an opening, an inner container for accommodating an item to be stored, and an outer container for accommodating the inner container with the opening formed. And an inner lid that covers the opening of the inner container, wherein the inner container is in a state where the inner container is housed in the outer container, from the edge of the inner container on the opening side. extending outwardly from the outer container, e Bei the contact with the edge of the opening-side inner receptacle flange portion of said outer container, said inner container side flange portion is formed on the rear surface of the inner container side flange portion When the inner container is housed in the outer container, the outer container is provided with a convex portion located outside the edge portion on the opening side of the outer container.

  In addition, the portable container is provided on an outer lid that overlaps an upper surface of the inner lid and an outer surface of a side wall of the outer container, and is locked to the outer lid that overlaps the inner lid, so that the inner lid, the A fixing member that integrates the inner container, the outer container, and the outer lid may be provided.

  Further, the inner lid is provided on the outer peripheral side of the inner lid, and includes an inner lid side flange portion that overlaps the inner container side flange portion, and the fixing member attracts the outer lid to the outer container. Then, the inner container side flange portion and the inner lid side flange portion may be brought into close contact with each other between the outer container and the outer lid.

  Further, the inner container side flange portion may include an inner container side projecting portion that extends outwardly of the inner lid side flange portion when the inner container is covered with the inner lid.

  Further, the two fixing members are provided at positions facing each other with the inner space of the outer container interposed therebetween, and the inner container side overhanging portion fixes the inner container when the inner container is housed in the outer container. The member may be provided so as to correspond to the outer surface of the side wall of the outer container in which the member does not exist, and may be curved so as to face the bottom of the inner container as it goes to the outside of the inner container.

  A closed space may be formed between the inner lid and the outer lid.

  Further, the outer container includes a bottomed inner cylinder and a bottomed outer cylinder located on the outer peripheral side of the inner cylinder, wherein the inner cylinder and the outer cylinder are on the opening side of the outer container. A heat insulating layer may be provided between the inner cylinder and the outer cylinder that are connected to each other.

  According to the present invention, the inner container can be easily taken out from the outer container.

It is a perspective view of a portable container concerning one embodiment of the present invention. It is a partial cross section figure seen from the front of the portable container concerning one embodiment of the present invention. FIG. 3 is an enlarged view of FIG. 2 according to an embodiment of the present invention. It is a perspective view of a part of portable container concerning one embodiment of the present invention. It is a perspective view of the outer container which concerns on one Embodiment of this invention. It is a perspective view of the inner container which concerns on one Embodiment of this invention. It is a perspective view of the inner lid which concerns on one Embodiment of this invention. It is a perspective view of an inner lid which does not have a seal member concerning one embodiment of the present invention. It is a perspective view of the inner lid provided with the seal member concerning one embodiment of the present invention. FIG. 5 is a cross-sectional view of two stacked inner containers according to an embodiment of the present invention. It is a schematic diagram showing an X-ray foreign matter inspection device concerning one embodiment of the present invention. It is a flowchart which shows the procedure of the handling method of the portable container which concerns on one Embodiment of this invention.

  An embodiment of a portable container according to the present invention will be described with reference to the drawings.

The portable container according to the present embodiment is for storing and transporting a large amount of food (containment) at a school lunch, employee cafeteria, or the like.
Specifically, as shown in FIGS. 1 and 2, the portable container 1 includes an inner container 10, an outer container 30, an inner lid 20, an outer lid 40, and a fixing member 35. Hereinafter, each component of the portable container 1 will be described.

(Structure of outer container 30)
As shown in FIG. 5, the outer container 30 is formed of a stainless material in the present embodiment, and is also formed of a bottomed substantially rectangular parallelepiped. The outer container 30 includes a rectangular bottom plate 30a and four side walls 30b to 30e rising from the outer peripheral edge of the bottom plate 30a. The four side walls 30b to 30e have a rectangular tubular shape so as to surround the bottom plate 30a. The connecting portion between the bottom plate 30a and the side walls 30b to 30e and the connecting portion between the four side walls 30b to 30e each have a rounded shape. An opening 31 that opens upward is formed on the upper side of the outer container 30. The inner container 10 is put in and taken out through the opening 31.

  In this embodiment, the outer container 30 has a two-layer structure. Specifically, as shown in FIG. 3, the outer container 30 includes an outer cylinder 32o and an inner cylinder 32i located inside the outer cylinder 32o. The inner cylinder 32i is formed with a size smaller than the outer cylinder 32o. The inner cylinder 32i is located between the outer cylinder 32o and the heat insulating layer 32a. In the present embodiment, the heat insulating layer 32a is made of air or a gas having a thermal conductivity equal to or lower than that of air. The inner cylinder 32i and the outer cylinder 32o are connected to each other at their respective edges on the side of the opening 31.

(Structure of the fixing member 35)
As shown in FIGS. 1 and 2, the fixing member 35 is a so-called patch lock and is provided on the outer surfaces of the side walls 30b and 30d along the pair of short sides of the outer container 30 which face each other. That is, the fixing member 35 is located so as to face the longitudinal direction of the outer container 30. The fixing member 35 includes an operating portion 35b and a locking member 35a. As shown in FIG. 1, the locking member 35a is formed of a wire rod in a rectangular shape. One of the rectangular short sides of the locking member 35a is rotatably connected to the operation portion 35b. The wires on both long sides of the locking member 35a are bent. The locking member 35a is configured to be movable by the rotation operation of the operation unit 35b by the operator.
Note that, as shown in the right half of FIG. 2, the locking member 35a shown by the chain double-dashed line is locked to the outer lid 40 to fix the outer lid 40 to the outer container 30.
Further, as shown in FIG. 2, a pair of side walls 30b and 30d of the outer container 30 is provided with a handle 37 to be gripped by an operator at a position corresponding to the operation portion 35b.

(Structure of inner container 10)
The inner container 10 has high heat resistance to a temperature reached by the inner container 10 during high temperature drying (for example, 120 ° C.), and the inner container 10 does not deform when food is stored (filled) in the inner container 10. It is formed of a resin having a high rigidity. More specifically, the inner container 10 has a tensile strength measured according to JIS K 7161 of 50 MPa or more, a bending strength measured according to JIS K 7171 of 50 MPa or more, and JIS K 7191. It is preferably formed of a resin having a deflection temperature under load of 100 ° C. or higher when a load of 1.8 MPa measured in conformity with the above is applied. In the present embodiment, the inner container 10 is formed of liquid crystal polymer (LCP: Liquid Crystal Polymer). Specifically, for example, a hydroxybenzoic acid polyester resin may be adopted as the liquid crystal polymer.
The following table shows the tensile strength, bending strength and deflection temperature under load of various resins.

In the above table, the abbreviations of resins are as follows.
LCP: Liquid Crystal Polymer (Liquid Crystal Polymer)
PP: Polypropylene
PC: Polycarbonate
PAR: Polyarylate
PEN: Polyethylene naphthalate
PBT: Polybutylene terephthalate
PES: Polyether sulfone
PPS: Polyphenylene sulfide
PEEK: Polyether Ether Ketone That is, the inner container 10 is made of polypropylene (excluding non-reinforced polypropylene), polycarbonate, polyarylate, polyethylene naphthalate, polybutylene terephthalate, polyether sulfone, polyphenylene sulfide or poly, instead of the liquid crystal polymer. It may be formed by ether ether ketone. More preferably, the inner container 10 may be formed of polypropylene (excluding non-reinforced polypropylene), polycarbonate, polyarylate, polybutylene terephthalate, polyether sulfone, polyphenylene sulfide or polyether ether ketone instead of the liquid crystal polymer. Good.

  As shown in FIG. 6, the inner container 10 has substantially the same shape as the outer container 30 and is formed in a size smaller than the outer container 30 so that the inner container 10 can be housed in the outer container 30. That is, the inner container 10 includes a bottom plate 10a having a rectangular plate shape, and four side walls 10b to 10e rising from the outer peripheral edge of the bottom plate 10a. The four side walls 10b to 10e have a rectangular tubular shape so as to surround the bottom plate 10a. On the upper side of the inner container 10, an opening 11 that opens upward is formed. Food is taken in and out of the inner container 10 through the opening 11.

  As shown in FIG. 6, the inner container 10 includes a plurality of vertical ribs 14, an inner container side flange portion 12, and two inner container side projecting portions 13. As shown in FIG. 10, the plurality of vertical ribs 14 extend in the thickness direction of the bottom plate 10a (the height direction of the inner container 10 in FIG. 10) on the outer surfaces of the pair of side walls 10b and 10d facing each other. Each vertical rib 14 extends from the back side of the inner container side flange portion 12 of the inner container 10 to the vicinity of the center in the thickness direction of the bottom plate 10 a of the inner container 10. Each vertical rib 14 is formed in a rectangular column shape. In the present embodiment, three vertical ribs 14 are provided on each of the pair of side walls 10b and 10d. The three vertical ribs 14 are parallel to each other.

As shown in FIG. 6, the inner container side flange portion 12 is formed in an annular shape extending outward from an edge portion of the inner container 10 on the opening 11 side. As shown in FIG. 3, the inner container side flange portion 12 extends outside the outer container 30 in a state where the inner container 10 is housed in the outer container 30. The tip side of the inner container side flange portion 12 is configured to be exposed to the outside of the portable container 1. The lower surface of the inner container side flange portion 12 is in contact with the edge portion of the outer container 30 on the opening 31 side. Further, the inner container side flange portion 12 includes a tip portion 12b orthogonal to the direction in which each inner container side flange portion 12 extends. That is, each inner container side flange portion 12 is formed in a substantially T shape inclined by 90 °.
Further, as shown in FIG. 6, a concave portion 15 is formed in the edge portion of the inner container 10 on the opening 11 side. The recess 15 is formed on the pair of side walls 10b and 10d on which the vertical rib 14 is formed. As shown in FIG. 3, the recess 15 includes a side surface 15b extending in the thickness direction of the bottom plate 10a and an installation surface 15a orthogonal to the side surface 15b. The recess 15 is open toward the inner space of the inner container 10 and upward. The installation surface 15a is formed in a flat shape.
Further, as shown in FIG. 6, a pressure reducing groove 12c is formed on the upper surface of the inner container side flange portion 12.

The inner container side overhanging portion 13 is provided at the tip of the inner container side flange portion 12, as shown in FIG. 6. The inner container-side overhanging portion 13 is provided only in a portion of the inner container-side flange portion 12 corresponding to the side walls 10c and 10e along the pair of long sides. That is, the inner container-side overhanging portion 13 is located so as to face in the lateral direction of the inner container 10. The inner container side overhanging portion 13 is formed in a curved plate shape so as to face the bottom side of the inner container 10 toward the outside of the inner container 10.
As shown in FIG. 4, a plurality of protrusions 12 a are formed in a portion of the inner container side flange portion 12 adjacent to the inner container side overhanging portion 13. Each of the convex portions 12a is formed in a hemispherical shape having a flat end. The plurality of convex portions 12a are arranged along the boundary line between the inner container side flange portion 12 and the inner container side projecting portion 13.

(Structure of inner lid 20)
The inner lid 20 is made of a transparent resin, for example, polyether sulfone (PES). As shown in FIG. 2, the inner lid 20 is formed in a rectangular plate shape that covers the opening 11 of the inner container 10. As shown in FIG. 7, each corner of the inner lid 20 is rounded. Further, the inner lid 20 has a rectangular plate-shaped main body portion 22a, an inner lid side flange portion 22b formed in an annular shape on the outer periphery of the main body portion 22a, and an inner lid side flange portion 22b which projects outward from the inner lid side flange portion 22b. And a lid-side overhanging portion 22c. As shown in FIG. 3, the inner lid side flange portion 22b is located below the main body portion 22a. A concave portion 23 is formed on the lower surface of the inner lid side flange portion 22b along the outer peripheral edge portion of the inner lid 20. When the inner container 20 is covered with the inner lid 20, the tip portion 12b of the inner container-side flange portion 12 of the inner container 10 fits into the recess 23 of the inner lid 20 at the side where the inner container-side protruding portion 13 is not present. At this time, the inner lid side flange portion 22b is located outside the tip portion 12b of the inner container 10. Therefore, the inner lid 20 can be easily removed by placing a finger on the inner lid side flange portion 22b.
The inner lid side overhanging portion 22c is provided at a portion corresponding to the inner lid side flange portion 22b along the pair of long sides. That is, the inner lid-side overhanging portion 22 c is located so as to face the inner lid 20 in the lateral direction. As shown in FIG. 1, when the inner lid 20 is covered with the inner container 10, the inner lid-side overhanging portion 22 c is formed so as to overlap the inner container-side overhanging portion 13.

  As shown in FIGS. 7 to 9, the inner lid 20 includes a seal holding portion 24, a convex portion 27, and a convex rib 26. As shown in FIG. 8, the seal holding portion 24 is formed on the lower surface of the inner lid 20 in a rectangular frame shape along the outer peripheral edge portion of the inner lid 20. The seal holding portion 24 has a recess 24a formed at the center of the pair of long sides. The concave portion 24a has a trapezoidal shape that penetrates in the thickness direction of the seal holding portion 24 and has a width that increases as it goes upward in FIG. The convex portion 27 is formed on the lower surface of the inner lid 20 in a rectangular frame shape surrounding the seal holding portion 24. The height of the convex portion 27 is lower than that of the seal holding portion 24.

As shown in FIG. 9, a rubber seal member 25 is attached to the seal holder 24. The seal member 25 is formed in a rectangular ring shape. The seal member 25 is attached to the outer peripheral surface of the seal holder 24. As shown in FIG. 3, the seal member 25 is located between the seal holding portion 24 and the convex portion 27.
Specifically, the seal member 25 includes a mounting portion 25a that is rotated clockwise by 90 ° in FIG. 3 and has a substantially L-shaped cross section, and a flange portion 25b that extends toward the tip end surface of the seal holding portion 24. The inner container 10 is provided with a water stop portion 25c that abuts the inner container side flange portion 12 of the inner container 10. The inner peripheral surface of the mounting portion 25 a contacts the outer peripheral surface of the seal holding portion 24.
The collar portion 25b is formed along the tip surface of the seal holding portion 24 from the end portion of the mounting portion 25a (the end portion adjacent to the tip of the seal holding portion 24). As shown in FIG. 9, the flange portion 25b is formed in a region of the seal member 25 excluding each corner portion. In addition, a trapezoidal fitting convex portion 25d that fits into the concave portion 24a of the seal holding portion 24 is formed on the inner peripheral surface of the mounting portion 25a.
As shown in FIG. 3, the water blocking portion 25c is curved on the outer periphery of the mounting portion 25a so as to face the seal holding portion 24 toward the tip side of the water blocking portion 25c. With the inner lid 20 covering the inner container 10, the tip of the water blocking portion 25c of the seal member 25 comes into close contact with the upper surface of the inner container-side flange portion 12 of the inner container 10. As a result, foreign matter containing water is prevented from entering the inner container 10 covered with the inner lid 20.
As shown in FIG. 7, the convex ribs 26 are formed on the upper surface of the inner lid 20 in an arc shape corresponding to the four corners of the inner lid 20. The convex rib 26 is located on the outer peripheral side of the seal holding portion 24.

(Structure of outer lid 40)
The outer lid 40 is formed of a stainless material, as shown in FIG. Like the inner lid 20, the outer lid 40 is formed in a substantially rectangular plate shape. Specifically, the outer lid 40 includes a rectangular plate-shaped main body portion 41, an upright edge portion 42 standing upright in the thickness direction of the main body portion 41 along the outer peripheral edge of the lower surface of the main body portion 41, and a main body. And a pair of locking metal fittings 46 that are positioned on the upper surface of the portion 41 and that are locked by the locking members 35a of the fixing member 35.

The locking fittings 46 are provided on the edges of the main body 41 along the pair of short sides, respectively. That is, the pair of locking fittings 46 are located opposite to each other in the longitudinal direction of the main body 41. Each locking fitting 46 is formed in a plate shape curved in a concave shape. Each locking fitting 46 is configured so that the tip of the locking member 35a of the fixed member 35 fits.
As shown in FIG. 3, when the outer lid 40 is overlaid on the upper surface of the inner lid 20, the standing edge portion 42 of the outer lid 40 contacts the upper surface of the inner lid side flange portion 22b. A closed space A1 is formed between the inner lid 20 and the outer lid 40.

(Storing the inner container in the outer container)
As shown in FIGS. 1 and 2, the inner container 10 covered with the inner lid 20 is housed in the outer container 30 and covered with the outer lid 40.
When the inner container 10 covered with the inner lid 20 is housed in the outer container 30, the inner container 10 has substantially the same shape as the outer container 30, and as shown in FIG. 6, a rectangular plate-shaped bottom plate 10 a and a bottom plate 10 a. Since it is formed of four side walls 10b to 10e rising from the peripheral edge and is formed in a size smaller than the outer container 30 so that the inner container 10 can be housed in the outer container 30, the long side of the inner container 10 is a short side of the outer container 30. It cannot be accommodated on the side side, and the longitudinal side of the inner container 10 and the longitudinal side of the outer container 30 are aligned and accommodated. Therefore, the inner container side overhanging portion 13 of the inner container 10 can be reliably positioned on the long side of the portable container 1, and the handle 37 and the fixing member 35 of the outer container 30 can be positioned on the short side. it can.
Therefore, since there are members to be gripped on both the long side and the short side facing each other, it is possible to carry the portable container 1 by gripping from either the long side or the short side facing each other. Further, when the portable container 1 is stored in a shelf or the like, it can be pulled out from either the long side or the short side.

When the inner container 10 covered with the inner lid 20 is housed in the outer container 30, a closed space A2 is formed between the outer surface of the inner container 10 and the inner surface of the inner cylinder 32i of the outer container 30. The closed space A2 and the heat insulating layer 32a of the outer container 30 can keep the food contained in the inner container 10 warm.
Further, since the inner container 10 is made of a highly durable resin, the bottom plate 10a and the side walls 10b to 10e of the inner container 10 can be made thin, and the heat transferred to the inner container 10 is reduced, so that the food The temperature change of the food product immediately after being stored in the inner container 10 is small.

Then, after the inner container 10 covered with the inner lid 20 is housed in the outer container 30, the outer lid 40 is covered and the outer cover 40 is operated by operating the operation portion 35b of the fixing member 35 provided on the outer container 30. Attract to the outer container 30. At this time, the inner lid side flange portion 22b and the inner container side flange portion 12 extend outward from the outer lid 40 and the outer container 30, and even after the outer lid 40 is covered, the inner container 10 covered with the inner lid 20 is covered. It is possible to easily visually confirm whether or not is stored.
In the opening 31, the outer lid 40 and the outer container 30 sandwich the inner lid 20 and the inner container 10, and the outer lid 40 and the outer container 30 do not come into contact with each other. Can be attracted. Therefore, the compressive force is reliably transmitted to the inner lid side flange portion 22b and the inner container side flange portion 12 that are sandwiched between the outer lid 40 and the outer container 30, and the seal member 25 provided in the inner lid 20 is more strongly compressed and deformed so that the waterproofness is improved. Can be kept high.

(Structure of X-ray foreign matter detector 110)
In the present embodiment, as shown in FIG. 11, an X-ray foreign substance detector 110 that detects foreign substances using X-rays is used as a foreign substance inspection device. The X-ray foreign substance detector 110 can detect foreign substances such as metal, glass, and resin.
The X-ray foreign matter detector 110 includes, for example, an X-ray generator 111, a line sensor 114, a conveyor 122, a display unit 112, and an image processing unit 113. The conveyor 122 is an electric belt conveyor, and detects a detection target (in the present embodiment, the inner container 10 with the inner lid 20 in which food is stored) from the vicinity of the first work table 131 to the second work table 132. The sheet is conveyed to the vicinity of (1) through between the X-ray generator 111 and the line sensor 114.
The X-ray generator 111 is located above the conveyor 122 and irradiates the detection target conveyed by the conveyor 122 with X-rays. The line sensor 114 is provided in a position facing the X-ray generator 111 in the conveyor 122, receives the X-rays from the X-ray generator 111, and photographs the detection target. The image processing unit 113 analyzes the image captured by the line sensor 114 to determine the presence / absence of foreign matter, and displays the image on the display unit 112. When the image processing unit 113 determines that there is a foreign substance, the image processing unit 113 may notify the operator of that fact through the display unit 112.
Instead of the X-ray foreign matter detector 110 as the foreign matter inspection device, for example, a metal detector including a transmission coil and a reception coil may be used. The metal detector can detect only metallic foreign matters.

(Handling method of portable container 1)
Next, a method of handling the portable container 1 by an operator will be described according to the flowchart of FIG. Note that this handling method is an example, and the portable container 1 may be used by other handling methods.
First, the operator prepares the inner container 10 and the inner lid 20, puts food in the inner container 10, and then covers the inner container 20 with the inner lid 20 (S1: filling step). This filling step S1 is performed by an operator on the first work table 131 shown in FIG. 11, for example. At this time, the seal member 25 may be attached to the inner lid 20. At that time, the hardness of the seal member 25 is set so that when the inner lid 20 to which the seal member 25 is attached is put on the inner container 10, the inner container side overhanging portion 13 of the inner container 10 and the inner lid side flange of the inner lid 20 are covered. It is preferable that the hardness is such that it does not come into contact with the portion 22b. In this embodiment, since the inner lid 20 is transparent, a worker can visually recognize the food in the inner container 10 through the inner lid 20. When carrying the inner container 10, the operator overlaps and grips the pair of inner lid-side protruding parts 22c and inner container-side protruding part 13.

Next, the inner container 10 is placed on the conveyor 122 to pass through the X-ray foreign matter detector 110 (S2: foreign matter inspection step).
Next, the inner container 10 with the inner lid 20 determined to have no foreign matter is housed in the outer container 30 (S3: housing step). This storage step S3 is performed by an operator on the second work table 132 shown in FIG. 11, for example. The inner container 10 with the inner lid 20 determined to have foreign matter is not stored in the outer container 30, and the cause of the foreign matter is analyzed by the operator.
Next, the outer container 40 that has undergone the storage step S3 is covered with the outer lid 40, and the portable container 1 is integrated by the fixing member 35 (S4: integration step). Specifically, the operator operates each operation member 35b after locking each locking member 35a of the outer container 30 to the corresponding locking metal fitting 46. As a result, the outer lid 40, the outer container 30, the inner lid 20, and the inner container 10 are integrated. At this time, a compressive force is generated between the upright edge portion 42 of the outer lid 40 and the edge portion of the outer container 30 on the side of the opening 31 while sandwiching the inner lid side flange portion 22b and the inner container side flange portion 12. To do.
Next, the integrated portable container 1 is stored in the container car 130 from the second work table 132 (S5: storing step). The portable container 1 is transported from a transportation source such as a feeding center to a transportation destination such as a school while being stored in the transportation container car 130 (S6: transportation step).
After that, after the transport container vehicle 130 arrives at the transport destination, the transportable container 1 is unloaded from the transport container vehicle 130. Then, for example, in the case where the transport destination is a school, the portable container 1 is transported to the front of each classroom and then placed on the table of each classroom. Then, the fixing member 35 of the portable container 1 is unlocked on the table in the classroom, the outer lid 40 and the inner lid 20 are removed from the inner container 10 and the outer container 30, and the food in the inner container 10 is a tableware. Is served and served. Alternatively, the inner container 10 may be taken out of the outer container 30 and the food in the inner container 10 may be placed on tableware. When the serving is completed, the outer lid 40 and the inner lid 20 are re-covered on the inner container 10 and the outer container 30 and locked by the fixing member 35, so that the portable container 1 is integrated. The integrated portable container 1 is stored in the transport container vehicle 130 again, and the transport container vehicle 130 is returned to the transport source. After lowering the portable container 1 from the transport container car 130 at the transport source, each locking member 35a of the outer container 30 is removed from the locking metal fitting 46 by operating the operation portion 35b, and the outer container 30 and the inner container The outer lid 40 and the inner lid 20 are removed from the inner container 10, the inner container 10 is taken out from the outer container 30, the seal member 25 is removed from the inner lid 20, and each member is disassembled. Then, each member is put into a washing machine and washed. Each member is washed with hot water at 50 ° C to 60 ° C in a washing machine. Each member washed by the washing machine is housed in the washed transport container car 130 as an example, and is dried, sterilized and stored together with the transport container car 130. Each member is dried by, for example, flowing high-temperature hot air of 90 ° C. to 120 ° C. into the container car 130 and circulating it.

(How to stack inner containers 10)
When storing the inner container 10, a plurality of inner containers 10 can be stacked. Specifically, as shown in FIG. 10, a first inner container 101 that is the inner container 10 and a second inner container 102 that is an inner container 10 different from the first inner container 101 are stacked. The case will be described.
First, the bottom plate 10a of the first inner container 101 is inserted into the second inner container 102. At this time, the orientation of the first inner container 101 is aligned with that of the second inner container 102. The tips of the three vertical ribs 14 of the first inner container 101 are in contact with the installation surface 15a of the recess 15 of the second inner container 102. As a result, the first inner container 101 is stably positioned with respect to the second inner container 102 via the three vertical ribs 14 on each of the side walls 10b and 10d. At this time, the inner space of the second inner container 102 communicates with the outside through the space between the vertical ribs 14 of the first inner container 101. Similarly, three or more inner containers 10 may be stacked.

(How to stack the inner lid 20)
When the inner lid 20 shown in FIGS. 7 to 9 is stored, a plurality of inner lids 20 can be stacked. In this case, the convex ribs 26 of the first inner lid 20 fit into the outer peripheral side of the seal holding portion 24 of the second inner lid 20. Therefore, the first inner lid 20 can be stably stacked on the second inner lid 20.

(effect)
According to the embodiment described above, the following effects are achieved.

(1) The portable container 1 has an opening 11 formed therein, an inner container 10 for accommodating foods (inclusions), and an outer container 30 formed with an opening 31 and accommodating the inner container 10. And an inner lid 20 that covers the opening 11 of the inner container 10. The inner container 10 extends outside the outer container 30 from an edge portion of the inner container 10 on the side of the opening 11 in a state where the inner container 10 is housed in the outer container 30, and an edge of the outer container 30 on the side of the opening 31. The inner container side flange portion 12 that abuts against the portion is provided.
According to this configuration, the operator can easily take out the inner container 10 from the outer container 30 by gripping the inner container side flange portion 12.
Further, the inner container side flange portion 12 closes the gap between the edge portion of the inner container 10 on the opening 11 side and the edge portion of the outer container 30 on the opening 31 side. Therefore, the heat of the inner container 10 is suppressed from escaping from the gap to the outside, and the heat retaining property of the portable container 1 is improved.
Further, in the inner container 10, only the inner container side flange portion 12 contacts the outer container 30. Therefore, the contact area between the inner container 10 and the outer container 30 can be minimized. Therefore, it is difficult for heat to be transferred from the inner container 10 to the outer container 30, and the heat retaining property of the portable container 1 is improved.

(2) The portable container 1 is provided on the outer lid 40 that overlaps the upper surface of the inner lid 20 and the outer lid 40 that is provided on the outer surface of the side wall of the outer container 30 and is locked by the outer lid 40 that overlaps the inner lid 20. And a fixing member 35 that integrates the inner container 10, the outer container 30, and the outer lid 40.
According to this structure, the inner lid 20, the inner container 10, the outer container 30, and the outer lid 40 are integrated by the fixing member 35, so that the inner lid 20 and the inner container 10 are interposed between the outer lid 40 and the outer container 30. Can be held and transported more reliably.

(3) The inner lid 20 is provided on the outer peripheral side of the inner lid 20 and includes an inner lid side flange portion 22b overlapping the inner container side flange portion 12. The fixing member 35 attracts the outer lid 40 to the outer container 30 to bring the inner container-side flange portion 12 and the inner lid-side flange portion 22b into close contact with each other between the outer container 30 and the outer lid 40.
According to this structure, the inner container-side flange portion 12 and the inner lid-side flange portion 22b are brought into close contact with each other by the fixing member 35, so that the waterproof property between the inner container 10 and the inner lid 20 can be improved. Moreover, since the inner container side flange portion 12 and the inner lid side flange portion 22b are in close contact with each other, the sealing member 25 is not compressed and deformed more than necessary. Therefore, regardless of the presence or absence of the seal member 25, it is possible to reduce the variation in the operating load of the fixing member 35.
In addition, the inner container side flange portion 12 and the inner lid side flange portion 22b are overlapped and grasped to increase the thickness of the grasped portion. Therefore, it becomes easy to hold the inner container 10 and the inner lid 20. Further, when the inner container 10 and the inner lid 20 are held, the inner lid 20 can be prevented from coming off from the inner container 10.

(4) The inner-container-side flange portion 12 includes the inner-container-side projecting portion 13 that extends outward of the inner-lid-side flange portion 22b when the inner container 10 is covered with the inner lid 20.
According to this configuration, the operator can more easily remove the inner container 10 from the outer container 30 by gripping the inner container-side overhanging portion 13.

(5) Two fixing members 35 are provided at positions facing each other with the inner space of the outer container 30 interposed therebetween. When the inner container 10 is housed in the outer container 30, the inner container-side overhanging portion 13 is provided corresponding to the side walls 30c and 30e of the outer container 30 in which the fixing member 35 does not exist, and is provided outside the inner container 10. It curves so that it may go to the bottom part 10a of the inner container 10 as it goes.
According to this configuration, since the inner container-side overhanging portion 13 is curved, when the inner container-side overhanging portion 13 is supported by a finger, the finger and the edge portion of the outer container 30 on the opening 31 side are supported. Since it is separated from the inner container side flange portion 12, the fingers can be prevented from being caught between them.
Further, since the inner container-side protruding portion 13 is provided corresponding to the side walls 30c and 30e of the outer container 30 where the fixing member 35 does not exist, the inner container-side protruding portion 13 and the fixing member 35 are at different positions. Therefore, the locking member 35a of the fixing member 35 (for example, a patch lock) does not need to have a shape that avoids the inner container side overhanging portion 13.

(6) A closed space A1 is formed between the inner lid 20 and the outer lid 40.
According to this configuration, the heat insulation of the portable container 1 is improved by the closed space A1.

(7) The inner-container-side flange portion 12 is formed on the back surface of the inner-container-side flange portion 12, and when the inner container 10 is housed in the outer container 30, the inner container-side flange portion 12 is located outside the edge portion on the opening 31 side of the outer container 30. The protrusion 12a is provided.
According to this configuration, since the operator's finger hits the convex portion 12a, it is possible to prevent the finger from exceeding the convex portion 12a, whereby the edge portion of the outer container 30 on the opening 31 side and the inner container side flange portion. It is possible to prevent the fingers from being caught between them.

(8) The inner container 10 has heat resistance to a temperature reached by the inner container 10 during drying with high-temperature hot air after cleaning, and when the inner container 10 stores (fills) food, the food is stored. The outer container 30 is made of a resin having rigidity such that the inner container 10 is not deformed when the (filled) inner container 10 is held.
According to this configuration, since the inner container 10 is made of resin, it is possible to detect foreign matter in the food by passing the inner container 10 through the foreign matter inspection device while the food is stored in the inner container 10.
The inner container 10 is a resin having rigidity such that the inner container 10 is not deformed when food is stored (filled) in the inner container 10 and when the inner container 10 is stored (filled) with food. Consists of. Therefore, the plate thickness of the inner container 10 can be made thin, and the downsizing of the inner container and eventually the portable container 1 can be achieved. Thereby, the efficiency of the storage volume of the inner container 10 with respect to the volume of the portable container 1 can be improved, the inner container 10 can be made lighter, and the portable container 1 can be easily transported. Further, by forming the inner container 10 to have a thin plate thickness, for example, when the X-ray foreign matter detector 110 is used, the resistance when X-rays are transmitted is reduced, and the foreign matter can be reliably and stably detected. it can.
Further, since the reinforcing rib for enhancing the durability of the inner container 10 is not required, it is possible to further suppress the size increase of the portable container 1.
Further, the inner container 10 is made of a resin having heat resistance to a temperature (for example, 120 ° C.) reached by the inner container 10 during drying with high temperature hot air after cleaning. Therefore, the inner container 10 is not deformed by the high-temperature hot air during drying.
Further, the inner container 10 is made of resin, and the outer container 30 is made of metal. In this configuration, compared to the case where the inner container and the outer container are made of metal, heat is less likely to be transferred from the inner container 10 to the outer container 30, and the heat retaining property of the portable container 1 is improved.

(9) The resin forming the inner container 10 has a tensile strength of 50 MPa or more, a bending strength of 50 MPa or more, and a load deflection temperature of 100 ° C. or more when a load of 1.8 MPa is applied.
As described above, the resin of the inner container 10 is a resin that can satisfy the respective tensile strength, bending strength, and deflection temperature under load, and heat resistance to withstand high-temperature hot air during drying, and food. It is possible to manufacture the portable container 1 including the inner container 10 having a rigidity that does not deform when the container is stored. By doing so, the inner container 10 can be downsized, and thus the portable container 1 can be downsized.

  (10) The inner container 10 is made of a liquid crystal polymer. The liquid crystal polymer has heat resistance and rigidity as described above. In particular, the liquid crystal polymer has properties such as stain resistance and easy removal, food coloration, food odor transfer, good shape stability, low water absorption and easy drying, so that the inner container It is suitable as the material of 10.

(11) The inner container 10 includes a plurality of vertical ribs 14 that are located on the outer surface of the inner container 10 with the inner space of the inner container 10 interposed therebetween and that extend in the thickness direction of the bottom plate 10 a of the inner container 10. When the first inner container 101 that is the plurality of inner containers 10 and the second inner container 102 are stacked, the end portion of the vertical rib 14 of the first inner container 101 on the bottom plate 10a side is the second inner container. It is formed so as to be in contact with the edge of the opening 102 on the side of the opening 11 (the installation surface 15a of the recess 15).
According to this configuration, the first inner container 101 is stably positioned on the second inner container 102 via the plurality of vertical ribs 14. At this time, the inner space of the second inner container 102 communicates with the outside through the space between the vertical ribs 14 of the first inner container 101. Thereby, when the container is dried, the water adhering to the inside of the second inner container 102 can be released to the outside through this space, and the drying can be performed quickly.

(12) The inner lid 20 is held by the seal holding portion 24 and the seal holding portion 24 formed along the outer peripheral edge of the lower surface of the inner lid 20, and the gap between the inner container 10 and the inner lid 20. And a convex rib 26 formed on the upper surface of the inner lid 20. When the first inner lid 20 and the second inner lid 20 that are the plurality of inner lids 20 are stacked, the convex ribs 26 of the first inner lid 20 are located outside the sealing member 25 of the second inner lid 20. Is formed so as to be located at.
According to this configuration, the convex ribs 26 of the first inner lid 20 fit into the outer peripheral side of the seal holding portion 24 of the second inner lid 20. Therefore, the first inner lid 20 can be stably stacked on the second inner lid 20. Further, at this time, since the seal member 25 is not compressed, the durability of the seal member 25 can be improved.

(13) The outer container 30 includes a bottomed inner cylinder 32i and a bottomed outer cylinder 32o positioned on the outer peripheral side of the inner cylinder 32i. The inner cylinder 32i and the outer cylinder 32o are connected at the opening 31 side of the outer container 30. A heat insulating layer 32a is provided between the inner cylinder 32i and the outer cylinder 32o.
According to this configuration, the outer container 30 has a two-layer structure and the heat insulating layer 32a is formed. Therefore, the heat retaining property of the portable container 1 is improved.
Further, since the inner cylinder 32i and the outer cylinder 32o are connected on the opening 31 side by, for example, welding, water does not enter the heat insulating layer 32a during cleaning.

(14) The hardness of the seal member 25 is set so that when the inner lid 20 is covered with the inner container 10, the tip portion 12b of the inner container 10 and the inner lid side flange portion 22b of the inner lid 20 are separated from each other. When carrying the inner container 10 with only the inner lid 20 covered, when the inner lid 20 with the seal member 25 is placed on the inner container 10, the tip of the water blocking portion 25c of the seal member 25 is the flange of the inner container 10. Abut the part 12. At this time, since the hardness of the seal member 25 is set as described above, only the water blocking portion 25c of the seal member 25 contacts the inner container 10 without the inner container 10 and the inner lid 20 contacting each other. Therefore, a gap is formed between the inner container-side protruding portion 13 (the tip portion 12b) of the inner container 10 and the inner lid-side flange portion 22b of the inner lid 20. For example, since it is put in the outer container 30 after the inspection by the foreign substance inspection device, when carrying the inner container 10 covered with the inner lid 20, the inner container side overhanging portion 13 of the inner container 10 is supported by four fingers other than the thumb, When the inner lid side flange portion 22b is picked with the thumb, the water stop portion 25c is compressed and deformed, and the tip end portion 12b of the inner container 10 and the inner lid side flange portion 22b come into contact with each other.
Therefore, while the hardness of the seal member 25 is set to be high in order to secure the waterproof property, when the inner container 10 to which the inner lid 20 is attached is gripped, the waterproof part 25c is compressed and deformed to prevent the waterproof property. Can be increased.
In addition, when removing the inner lid 20 from the inner container 10, there is a gap between the tip portion 12b of the inner container 10 and the inner lid side flange portion 22b of the inner lid 20, so put a finger in the gap. The inner lid 20 can be easily removed from the inner container 10.

(15) A pressure reducing groove 12c is formed on the upper surface of the inner container side flange portion 12. Therefore, even when the internal space of the inner container 10 in the portable container 1 is in a decompressed state due to the temperature drop, the decompression groove 12c allows the outside air to be introduced and the inner lid 20 to be easily removed from the inner container 10. You can
Further, since the seal member 25 is provided with the water blocking portion 25c, the contact area between the seal member 25 and the inner container 10 can be increased. Therefore, the sealing performance of the sealing member 25 can be improved.

(16) The handling method of the portable container 1 is to detect foreign matter in the filling step S1 in which the food is stored (filling) in the inner container 10 and then the inner lid 20 is covered, and the foreign substance is detected in the inner container 10 that has passed the filling step S1. The foreign matter inspection step S2 for determining the presence or absence of foreign matter in the inner container 10 through the line foreign matter detector 110, and the inner container 10 determined to have no foreign matter mixed in the foreign matter inspection step S2 are housed in the outer container 30. And a storage step S3.
According to this configuration, the portable container 1 has a structure having a high heat retaining property including the outer lid 40, the outer container 30, the inner lid 20, and the inner container 10, and the food in the inner container 10 is processed in the minimum necessary steps. Foreign matter inspection can be performed. Further, as described above, since the portable container 1 is easy to handle, the work of each step can be smoothly performed.

(17) The inner lid 20 is formed with an inner lid-side protruding portion 22c that overlaps with the inner container-side protruding portion 13 when the inner container 20 is covered with the inner lid 20.
According to this configuration, the inner lid-side overhanging portion 22c is gripped together with the inner container-side overhanging portion 13 to increase the thickness, and it is easier to hold than the inner container-side flange portion 12. Further, when taking out the inner container 10 and the inner lid 20 from the outer container 30, it is easy to take them out.
Further, by gripping the inner lid-side overhanging portion 22c together with the inner container-side overhanging portion 13, the inner container 10 and the inner lid 20 are more closely adhered to each other than the inner container-side flange portion 12 is provided, and the waterproofness is enhanced. .
Further, since the inner lid side overhanging portion 22c is smaller than the inner container side overhanging portion 13 and a gap is formed between the inner lid side overhanging portion 22c and the inner container side overhanging portion 13, the inner lid side flange portion 22b. It is easier to remove the inner lid 20 than to put a finger on the.

(Another embodiment)
The above-described embodiment can be carried out in the following forms in which this is appropriately changed.

  In the above-described embodiment, the outer container 30 is made of a stainless material, but may be made of a metal other than the stainless material, or may be made of a resin.

In the embodiment described above, the inner container 10 has the recess 15 in which the tips of the vertical ribs 14 are located when stacked, but the recess 15 may be omitted. In this case, the tips of the vertical ribs 14 may abut the edge of the inner container 10 on the side of the opening 11.
Moreover, the number of the vertical ribs 14 can be changed as appropriate, and for example, two vertical ribs 14 may be provided on each of the side walls 10b and 10d, or four or more vertical ribs 14 may be provided. Good. Further, the vertical rib 14 may be provided on each of the side walls 10c and 10e.

  In the above-described embodiment, the outer container 30 has a two-layer structure including the inner cylinder 32i and the outer cylinder 32o, but may have a single-layer structure when heat retention performance is not required.

  The inner lid side flange portion 22b in the above embodiment may be omitted.

  The inner lid 20 may be made of a material other than polyether sulfone as long as it is a transparent resin. The inner lid 20 does not have to be a transparent resin and may be formed of the same resin as the inner container 10.

In the above embodiment, the portable container 1 includes the outer lid 40, but the outer lid 40 may be omitted. In this case, the locking metal fitting 46 is provided on the inner lid 20, and the fixing member 35 integrates the inner lid 20, the inner container 10 and the outer container 30.
Further, the fixing member 35 in the above embodiment may be omitted. In this case, the weight of the inner lid 20 and the outer lid 40 may keep the inner container 10 and the outer container 30 closed by the inner lid 20 and the outer lid 40.

  In the above-described embodiment, the portable container 1 is formed in a substantially rectangular parallelepiped shape, but is not limited to this, and may be formed in, for example, a cylindrical shape. In this case, the inner container 10 and the outer container 30 are each formed in a bottomed tubular shape, and the inner lid 20 and the outer lid 40 are each formed in a disk shape.

In the above-described embodiment, the number and shape of the convex portions 12a provided on the back surface of the inner container side flange portion 12 can be appropriately changed. For example, the convex portion 12a may be formed in a columnar shape that extends along the boundary line between the inner container side flange portion 12 and the inner container side protruding portion 13.
Further, the seal holding portion 24, the seal member 25 and the convex rib 26 in the inner lid 20 may be omitted.
Further, the inner container side overhanging portion 13 was provided corresponding to the side walls 30c and 30e of the outer container 30 where the fixing member 35 does not exist when the inner container 10 is housed in the outer container 30, but It may be provided corresponding to the side walls 30b and 30d of the outer container 30 in which 35 exists. The inner container side overhanging portion 13 may be provided over the entire circumference of the inner container side flange portion 12. Further, the inner container side overhanging portion 13 may be omitted. Even in this case, the inner container 10 can be taken out from the outer container 30 by gripping the inner container side flange portion 12.
Further, a heat insulating member may be provided in the closed space A1 formed between the inner lid 20 and the outer lid 40, or the closed space A1 may be omitted.

DESCRIPTION OF SYMBOLS 1 ... Portable container 10 ... Inner container 10a ... Bottom plate 10b-10e ... Side wall 11 ... Opening part 12 ... Inner container side flange part 12a ... Convex part 12b ... Tip part 12c ... Decompression groove 13 ... Inner container side projecting part 14 ... Vertical rib (rib)
15 ... Recess 15a ... Installation surface 15b ... Side 20 ... Inner lid 22a ... Main body 22b ... Inner lid side flange 22c ... Inner lid side overhang 23 ... Recess 24 ... Seal holding part 24a ... Recess 25 ... Seal member 25a ... Mounting part 25b ... Collar part 25c ... Water stop part 25d ... Fitting convex part 26 ... Convex rib 27 ... Convex part 30 ... Outer container 30a ... Bottom plates 30b to 30e ... Side wall 31 ... Opening part 32a ... Thermal insulation layer 32i ... Inner cylinder 32o ... Outer cylinder 35 ... Fixing member 35a ... Engaging member 35b ... Operating portion 37 ... Handle 40 ... Outer lid 41 ... Main body 42 ... Standing edge 46 ... Engaging metal fitting 101 ... First inner container 102 ... Second Inner container 110 ... X-ray foreign matter detector 111 ... X-ray generator 112 ... Display unit 113 ... Image processing unit 114 ... Line sensor 122 ... Conveyor 130 ... Transport container car 131 ... First work platform 132 ... Second work platform

Claims (7)

An inner container in which the opening is formed and in which the contents are stored,
An opening is formed, and an outer container for accommodating the inner container,
An inner lid that covers the opening of the inner container,
The inner container, in a state where the inner container is housed in the outer container, extends outward from the outer container-side edge portion of the inner container, and the outer container-side edge of the outer container. Bei example abutting inner container side flange portion in section,
The inner container side flange portion,
Formed on the back surface of the inner container side flange portion, when the inner container is housed in the outer container, a convex portion located outside the edge portion of the outer container on the opening side,
A portable container characterized by the following. An outer lid overlapping the upper surface of the inner lid,
A fixing member that is provided on the outer surface of the side wall of the outer container and that is locked to the outer lid that overlaps the inner lid to integrate the inner lid, the inner container, the outer container, and the outer lid. Prepare,
The portable container according to claim 1, wherein: The inner lid is provided on the outer peripheral side of the inner lid, and includes an inner lid side flange portion that overlaps the inner container side flange portion,
The fixing member attracts the outer lid to the outer container, thereby bringing the inner container side flange portion and the inner lid side flange portion into close contact with each other between the outer container and the outer lid,
The portable container according to claim 2, wherein: The inner container side flange portion, in a state in which the inner container is covered with the inner lid, comprises an inner container side projecting portion extending outward than the inner lid side flange portion,
The portable container according to claim 3, characterized in that: Two of the fixing members are provided at positions facing each other with the inner space of the outer container interposed therebetween,
The inner container side overhanging portion is provided corresponding to the outer surface of the side wall of the outer container where the fixing member does not exist when the inner container is housed in the outer container, and extends toward the outside of the inner container. As it curves toward the bottom of the inner container,
The portable container according to claim 4, wherein: A closed space is formed between the inner lid and the outer lid,
The portable container according to any one of claims 2 to 5, characterized in that. The outer container is
With a bottomed inner cylinder,
An outer cylinder having a bottom located on the outer peripheral side of the inner cylinder,
The inner cylinder and the outer cylinder are connected at the opening side of the outer container,
A heat insulating layer is provided between the inner cylinder and the outer cylinder,
The portable container according to any one of claims 1 to 6 , which is characterized in that.

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