JP4890150B2 - Insulated container - Google Patents

Description

  The present invention relates to a heat-insulating container that is excellent in the cold and heat-retaining effects and can be folded.

  A heat-insulating container that is excellent in cold and heat retaining effects and can be folded is known, for example, as disclosed in Patent Document 1, and there are many other heat insulating containers.

JP-A-8-58847

The present applicant has disclosed Japanese Patent No. 2594525 as a foldable box. This box is composed of a bottom plate and four side plates. The two opposing side plates are folded in half at the center of the height, and are horizontal or almost horizontal (these are simply referred to as “horizontal”; the same shall apply hereinafter). In addition, a folded state in which the other two opposite side plates are horizontally folded and folded on the bottom plate, and all the side plates are vertical or almost vertical (these are simply referred to as “vertical”, the same applies hereinafter). It changes to the assembled state standing up.
If a cover plate is provided on such a box, and the inner surfaces of the cover plate, the bottom plate, and all side plates are covered with a heat insulating member, a foldable heat insulating container can be obtained.
However, in such a foldable heat insulating container, there is a possibility that a necessary heat insulating performance cannot be obtained because a gap is likely to be formed at the abutting portion (corner portion) between the heat insulating members in the assembled state. Of course, it is possible to improve the heat insulation performance by eliminating the play on dimensions and tightening the contact between the heat insulating members and reducing the gap, but if the contact between the heat insulating members is tight, the box is folded or assembled. Resistance due to friction between the heat insulating members at the time increases, and workability may be deteriorated. Further, if the heat insulating members rub against each other strongly, the heat insulating members may be damaged in a short period of time. In particular, when a so-called vacuum heat insulating material in which a core material is sealed in an airtight container and the inside is evacuated is used as the heat insulating member, the surface of the heat insulating member is severely damaged.

  The present invention has been made in view of the above, and an object of the present invention is to provide a heat insulating container that exhibits excellent heat insulating performance and is easy to assemble and fold.

As described in claim 1,
A foldable box that is composed of at least a bottom plate, a lid plate, and four side plates, and changes into an assembled state in which the side plates stand vertically or substantially vertically, and a folded state in which the side plates are horizontal or substantially horizontal;
The bottom plate, the cover plate, and a plate-like heat insulating member that covers the inner surface of each of the four side plates and forms a heat insulating space in the box,
Four heat insulating members corresponding to the side plates are configured to be swingable from a horizontal or substantially horizontal position to a vertical or substantially vertical position around a horizontal hinge portion,
Two opposing heat insulation members (hereinafter referred to as “pre-assembly heat insulation members”) were raised before the other two heat insulation members (hereinafter referred to as “rear-assembly heat insulation members”) and the rear-assembly heat insulation members were erected. It is configured to rotate between the pre-assembled heat insulating members to the standing position,
Further, at least the peripheral edge of the surface of the pre-assembled heat insulating member facing the heat insulating space is raised to form a strip-shaped step portion, and the end surface of the rear-assembled heat insulating member raised is applied to the strip-shaped step portion of the pre-assembled heat insulating member Provided is an insulated container that is in contact with each other.

Further, as described in claim 2,
The heat insulating container according to claim 1, wherein the band-shaped step portion of the pre-assembled heat insulating member is formed of a synthetic resin band plate, and the end surface of the rear assembled heat insulating member is further covered with a synthetic resin band plate.

As described in claim 3,
The side plate of the box is made of plastic corrugated board in which a synthetic resin core member is formed between two synthetic resin boards, and all the hinge portions provided on the side board are left with at least one plastic cardboard board. The heat insulating container according to claim 1 or 2, wherein the container is formed by a folding line that is cut or thinly crushed by thermal deformation.

Moreover, as described in Claim 4, the heat insulation container of any one of Claims 1 thru | or 3 which comprises the requirements of following (a)-(e) is provided.
(A) The upper part of the adjoining thing of the four side plates which comprise a box is connected, and a square frame part is comprised.
(B) The two opposing side plates are formed so as to be swingable by forming a hinge portion at the boundary portion with the mouth frame portion, and further, the pre-assembled heat insulating member is fixed to the inner side surface below the mouth frame portion.
(C) The other two side plates are each formed with a hinge portion at the boundary between the mouth frame portion and the bottom plate, and a horizontal hinge portion is provided at the center between the hinge portions so as to face the inside of the box. Be foldable.
(D) A rear assembly heat insulating member is swingably attached to the mouth frame at the upper part of the side plate in the item (c).
(E) In the folded state, the side plate of the item (b) is folded in a horizontal or substantially horizontal state under the rear assembly heat insulating member, and the side plate of the item (c) is bent below the box. Fold horizontally or nearly horizontally.

  The heat insulation container according to claim 1 exerts excellent heat insulation performance by minimizing the gap by bringing the left and right belt-like step portions of the front assembly heat insulation member into strong contact with the end surfaces of the rear assembly heat insulation member. On the other hand, when assembling or folding the heat insulation container, the rear assembly heat insulation member passes between the standing front assembly heat insulation members. At this time, the end surface of the rear assembly heat insulation member and the belt-like step portion of the front assembly heat insulation member intersect (for example, 10), and the end face of the rear assembly heat insulating member is not rubbed against the surface of the front assembly heat insulating member, so that it can be swung very lightly. There is no risk of damaging the surface of the pre-insulated heat insulating member.

  Moreover, since the heat insulation container of Claim 2 formed the strip | belt-shaped step part of the pre-assembly heat insulation member, and the end surface of the rear-assembly heat insulation member with the strip | belt board made from a synthetic resin, Since the degree of adhesion of the end surfaces of the rear assembly heat insulating member is increased, the heat insulating performance is further improved, and the ease of sliding is improved, and the ease of assembly and folding is also increased.

  Moreover, the heat insulation container according to claim 3 can further improve the heat insulation performance because there is no gap as a passage for heat in the hinge portion of the side plate.

  Moreover, the heat insulation container of Claim 4 can provide the heat insulation container which had the outstanding heat insulation performance and the ease of an assembly and folding.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view, FIG. 2 is a perspective view showing an assembled state, FIG. 3 is a longitudinal central sectional view showing the assembled state, and FIG. 4A is a longitudinal longitudinal center view showing the assembled state. FIG. 4B is a partial sectional view taken along line XX in FIG. 3, FIG. 5 is a perspective view showing the folded state, and FIG. 6 is a central longitudinal sectional view in the short direction showing the folded state. 7 is a longitudinal central longitudinal sectional view showing the folded state, FIG. 8 is a longitudinal central longitudinal sectional view showing the first assembly step, and FIG. 9 is a longitudinal central view showing the second assembly step. FIG. 10 is a central longitudinal sectional view in the short direction showing the third step of folding, FIG. 11 is a central longitudinal sectional view in the lateral direction showing the auxiliary step of assembly and folding, and FIG. 12 is an exploded view of the box FIG. 13 is a perspective view showing another form of the lid.

  As shown in FIG. 1, the heat insulating container of the present invention includes a box 1 that can be assembled and folded, six heat insulating members 2 a to 2 f, and a flexible bag-like inner cover 3 that covers the inside of the box 1. And is roughly composed of.

[Box]
As shown in the exploded perspective view of FIG. 12, the box 1 includes a bottom plate 4 having a rectangular shape in plan view, four side plates 5 a to 5 d erected vertically on four sides of the bottom plate 4, And a cover plate 6 that closes the opening. In addition, as shown in the enlarged view in FIG. 3, the plate material constituting the bottom plate 4, the side plates 5a to 5d, and the cover plate 6 is similarly a polypropylene core member 8 between the two substrates 7 and 7 made of polypropylene. Is a well-known plastic corrugated cardboard.

[Box-Bottom plate]
As shown in FIG. 12, the bottom plate 4 has a double structure in which two bottom plate constituting plates 4a and 4b are bonded to each other, and is fixed to both ends in a direction orthogonal to the core member 8 and fixed to the vertical plate 4c. Formed. The vertical plate 4c is obtained by thermally deforming both end portions of the lower bottom plate constituting plate 4a at right angles, and is provided with square hole-shaped locking portions 4d and 4d.

  On the other hand, the upper bottom plate constituting plate 4b is used in such a manner that the direction of the core member 8 of the plastic corrugated cardboard is perpendicular to the lower bottom plate constituting plate 4a, and the vertical plate of the lower bottom plate constituting plate 4a is used. The side plate support pieces 4e and 4e are raised by thermally deforming both end portions on the side orthogonal to 4c upward at a right angle.

[Box-side plate (bent)]
Of the four side plates 5a to 5d, the two side plates 5a and 5c connected to the side plate support piece 4e of the bottom plate 4 are connected to the bottom plate constituting plate 4b via a hinge portion 9a. The hinge portion 9a is cut by leaving one inner substrate 7 of the plastic corrugated cardboard, and the remaining inner substrate 7 supports the side plates 5a and 5c in a flexible manner. In the following description, the hinge part cut out with one plastic cardboard substrate left behind is called “half-cut hinge part”.

  The two side plates 5a and 5c have a half-cut hinge portion 9b cut horizontally from the outside at a position slightly lowered from the upper edge, and further at the center of the height between the two hinge portions 9a and 9b. A half-cut hinge portion 9c cut from the inside is formed horizontally, and the upper hinge portion 9b is formed into the mouth frame constituting pieces 10a and 10c, and is bent in a half-folded manner around the intermediate hinge portion 9c.

  A folded portion 11 is formed at the upper ends of the two side plates 5a, 5c by forming a half-cut hinge portion, and the folded portion 11 is wrapped so as to wrap around the folded portion 11. 12c is covered. Further, the molding member 12a provided on the upper edge of the side plate 5a is divided into upper and lower portions by a partition plate 13 as shown in FIG. 4A, and the folded portion 11 of the side plate 5a is below the partition plate 13. Is inserted.

[Box-Side plate (swing)]
Of the four side plates 5a to 5d, the remaining two side plates 5b and 5d use the plastic cardboard with the core member 8 facing in the vertical direction. The lower ends of the side plates 5b and 5d are heat-bent at a right angle in a direction perpendicular to the core member 8, and are processed to cut off the projecting portions thus formed. By doing so, the rigidity of the lower sides of the side plates 5b and 5d is increased and the cut edge of the plastic cardboard is not exposed on the lower sides of the side plates 5b and 5d, so that the touch touched with a bare hand becomes smooth and easy to use.

  The two side plates 5b and 5d are formed with half-cut hinges 9d cut from the outside at positions slightly lowered from the upper ends, and the upper part of the hinges 9d is used as mouth frame component pieces 10b and 10d. It can swing toward the inside of the box 1 around 9d.

  On the other hand, folded portions 11 are formed on the upper edges of the side plates 5b and 5d in the same manner as the side plates 5a and 5c, and synthetic resin molding members 12b and 12d are covered so as to wrap the folded portions 11. .

  Further, synthetic resin grip members 14 and 14 are attached to the upper portions of the side plates 5b and 5d. As shown in FIG. 3, the handle member 14 has a fitting portion 14b protruding from the upper surface of a handle main body 14a having a crank-shaped cross section, and the fitting portion 14b is fitted into the molding members 12b and 12d, thereby forming the molding member 12b. , 12d are attached to the side plates 5b, 5d. An inward claw piece 14d, 14d protrudes from the handle portion 14c protruding outside the side plates 5b, 5d of the handle member 14, and the claw piece 14d is provided on the vertical plate 4c of the bottom plate 4. It can engage with the stop 4d.

  Thus, the four side plates 5a to 5d constitute the square mouth frame portion 10 by connecting the mouth frame constituting pieces 10a to 10d of the adjacent ones. The mouth frame component pieces 10a to 10d are connected to each other by connecting the molding members 12a to 12d of the side plates 5a to 5d at right angles with the four corner members 15, 15.

[Box body-cover plate]
The cover plate 6 is attached to a molding member 12a provided on the upper edge of the side plate 5a so that one side edge is fixed and can be opened and closed. The lid plate 6 has a lid main body 600 having a size covering the mouth frame portion 10 of the side plates 5a to 5d, and a lid mounting continuously provided on one side edge of the lid main body 600 via a half-cut hinge portion 9e by a V groove. It consists of a piece 601, a lid stopper piece 602 formed by heat bending on the other side edge of the lid main body 600, and a claw-like lock piece 603 formed by heat bending the tip of the lid stopper piece 602. And the folding | returning part 604 similar to having provided in the side plates 5a-5d is formed in the lid | cover attachment piece 601, and the folding | returning part 604 fits above the partition plate 13 of the molding member 12a of the side plate 5a.

[Assembling and folding the box]
The box 1 is configured as described above, and in the assembled state, the four side plates 5a to 5d stand upright as shown in FIG. 1, and the openings of the side plates 5a to 5d are closed by the lid plate 6. It has been. When the lid plate 6 is in the closed position, as shown in FIG. 4A, the lid stopper piece 602 of the lid plate 6 covers the outside of the molding member 12c of the side plate 5c, and the lock piece 603 is further formed of the molding member. The cover plate 6 is locked on the lower corner of 12c.

  Next, when the assembled box 1 is folded, the side plates 5b and 5d are first swung inward, and then the side plates 5a and 5c are folded in half. If it does so, side plate 5a, 5c folded in half will be overlapped under horizontal side plate 5b, 5d, and it changes to a flat folded state. In this state, the claw piece 14d of the handle 14c of the handle member 14 engages with the engaging portion 4d of the vertical plate 4c of the bottom plate 4, so that the box 1 is locked in the folded state.

  To assemble from this folded state, the reverse of the above steps may be followed.

[Insulated container]
The heat insulating container is roughly constituted by the box 1, six heat insulating members 2 a to 2 f, and a flexible bag-shaped inner cover 3 that covers the inside of the box 1. The lid plate 6 of the box 1 used here is the above-described one attached to the molding member 12a (hereinafter referred to as the outer lid plate 6a) and the one attached to the box 1 (hereinafter referred to as the inner lid plate 6a). 2 plate structure).

[Heat insulation container-heat insulation member]
As shown in the enlarged view of FIG. 3, the six heat insulating members 2 a to 2 f use so-called vacuum heat insulating materials in which a core material 201 of urethane foam is sealed in an airtight container 200 and the inside is evacuated. The vacuum heat insulating material is excellent in heat insulating performance as compared with other heat insulating materials, and can be made light and thin. Therefore, the vacuum heat insulating material is optimal for a foldable heat insulating container. The heat insulating members 2a to 2f have a rectangular plate shape, and a front side surface (a surface facing the center of the box 1 is a front side surface or an inner surface, and the opposite is a back side surface or an outer surface. The same applies hereinafter) is covered with a thin synthetic resin (for example, polypropylene) sheet 202, and edge covers 203, 203 made of synthetic resin (the same material as the molding members 12a to 12d, for example, polypropylene) are provided on the entire periphery. ... is fitted.

  The edge cover 203 covers the band plate 203a that covers the end surfaces of the heat insulating members 2a to 2f, the band plate 203b that covers the front surface of the heat insulating members 2a to 2f, and the back surface of the heat insulating members 2a to 2f. It is U-shaped in cross section with the band plate 203c, and is bonded around the heat insulating members 2a to 2f. Accordingly, a belt-like step 16 that is slightly higher than the surface of the sheet 202 is formed by the belt plate 203b of the edge cover 203 at the periphery of the front surface of the heat insulating members 2a to 2f.

  Of the six heat insulating members 2a to 2f, the four heat insulating members 2a to 2d cover the inner side surfaces of the side plates 5a to 5d of the box 1, and the one heat insulating member 2e covers the inner side surface of the bottom plate 4 and remains. One heat insulating member 2f covers the inner surface of the inner lid plate 6b.

[Heat insulation member + side plate (rocking structure)]
The heat insulating members 2b and 2d covering the inner side surfaces of the swinging side plates 5b and 5d are directly attached to the inner side surfaces of the side plates 5b and 5d with an adhesive, and thus are integral with the side plates 5b and 5d. Therefore, the heat insulating members 2b and 2d can swing together with the side plates 5b and 5d around the hinge portion 9d. The lateral widths of the heat insulating members 2b and 2d are set to substantially the same length as that of the side plates 5b and 5d, and the height of the heat insulating members 2b and 2d is the side plate 5a with the lower side in contact with the heat insulating member 2e of the bottom plate 4. It is set to a length reaching the mouth frame 10 of ˜5d.

[Insulation member + side plate (bent structure)]
On the other hand, the heat insulating members 2a and 2c covering the inner side surfaces of the side plates 5a and 5c having the bent structure are swingably attached to the mouth frame constituting pieces 10a and 10c on the side plates 5a and 5c by the hinge plate 17. That is, the hinge plate 17 is formed of a rectangular plastic corrugated cardboard, and forms a half-cut hinge portion 9f cut from the outside at a position slightly lower than the upper edge, and the fixed piece 17a is formed between the upper edge and the hinge portion 9f. The fixed piece 17a is attached to the mouth frame constituting pieces 10a and 10c of the side plates 5a and 5c (see the hatched area P in FIG. 12), and is attached to the side plates 5a and 5c in a swingable manner. And the heat insulation members 2a and 2c are affixed on the surface below the fixing piece 17a of the hinge board 17 with the adhesive agent. The lateral width of the hinge plate 17 and the heat insulating members 2a and 2c is set to a length substantially equal to the distance between the heat insulating members 2b and 2d in a state where the side plates 5b and 5d and the heat insulating members 2b and 2d stand. The heights of the members 2a and 2c are set to the same length as the heat insulating members 2b and 2d.

  The heat insulating member 2c that covers the inner surface of the side plate 5c is formed with a temperature management space 18 that is cut out in a square shape at the upper center, and a temperature recording device 19 is attached to the temperature management space 18. The temperature recording device 19 incorporates a temperature sensor, a battery, a data recording means, a data communication means, etc. (not shown) inside the case body 19a, measures the temperature every predetermined time and records the data. In addition, the data communication means outputs the data to the outside.

  In addition, a loop-shaped knob 20 is attached to the lower side of the hinge plate 17 (which may be the heat insulating members 2a and 2c). Thus, the heat insulating members 2a and 2c that are erected by pulling the knob 20 can be easily rotated to the horizontal position.

[Insulation material + bottom plate]
The heat insulating member 2e that covers the inner surface of the bottom plate 4 is attached to the upper surface of the upper bottom plate constituting plate 4b with an adhesive.

[Insulation member + cover plate]
The heat insulating member 2f that covers the inner side surface of the inner lid plate 6b that is the lid plate 6 is attached to the inner side of the inner lid plate 6b with an adhesive.
The heat insulating member 2f is set to a size that fits in a square opening formed by the heat insulating members 2a to 2d standing.
On the other hand, the inner lid plate 6b has the same width as the heat insulating member 2f and a slightly longer length of the lid main body 600, and a swing that is connected to both sides of the lid main body 600 via half-cut hinges 9g, 9g. It consists of free projecting wing pieces 605 and 605. The projecting blade pieces 605 and 605 have their tops on the lower surfaces of the molding members 12a and 12c of the side plates 5a and 5c as shown in FIG. 4B with the inner lid plate 6b installed at a predetermined use position. It is set to a size that exerts a tension force between the molding members 12a and 12c and the lid main body 600, and the tension force prevents the inner lid plate 6b from being lifted.

A half-cut hinge portion 9h cut from the outside is formed in the middle of the height of the tension wing pieces 605 and 605, and a tongue-like finger hook portion 606 is continuously provided. By pulling 606 inward, the projecting wing pieces 605 and 605 are detached from under the molding members 12a and 12c. As shown in FIGS. 2 to 4A, the finger hook portion 606 is set to a size that protrudes above the top of the strut wing piece 605. Therefore, the strut wing piece 605 is below the molding members 12a and 12c. The finger hooking portion 606 is bent by the hinge portion 9h and tilted forward, and the head protrudes from the bottom of the molding members 12a and 12c to the inside of the box body 1 when in the stretched state. This makes it easy to grasp the finger hook portion 606, so that workability is very good.
Note that the finger hooking portion 606 of the strut wing piece 605 is not limited to the shape of the tongue piece of the embodiment, and may be a notch shape that can be hooked with a finger as shown in FIG. 13, for example.

[Insulated container-inner cover]
As described above, the heat-insulating container is provided with the flexible bag-like inner cover 3 that covers the inside. As shown in FIG. 1, the inner cover 3 has planar fasteners 21a, 21a... Fixed to the outer surface around the mouth, and on the other hand, a planar shape that forms a pair with the upper surface of the sheet 202 of the heat insulating members 2a, 2c. The fasteners 2b, 2b,... Are fixed, and are detachable by attaching and detaching the planar fasteners 21a, 21a,.

[Assembly / folding of insulated container]
The heat insulating container is configured as described above. In the assembled state, as shown in FIGS. 2 to 4, the four side plates 5 a to 5 d stand upright, and the inner surfaces of the side plates 5 a to 5 d are The heat insulating members 2a to 2d cover. A heat insulating space 22 is formed in the box 1 by the heat insulating members 2a to 2d, the heat insulating member 2e of the bottom plate 4, and the heat insulating member 2f of the inner lid plate 6b. As described above, the box 1 of the embodiment includes the outer lid plate 6a, and the outer lid plate 6a covers the inner lid plate 6b. In addition, the inner cover 3 is provided in the heat insulating space 22 as described above, so that even if liquid is present in the heat insulating space 22, it does not leak to the outside.

  On the other hand, in the folded state, as shown in FIG. 5 to FIG. 7, the side plates 5b and 5d plus the heat insulating members 2b and 2d having the swing structure overlap the hinge plates 17 plus the heat insulating members 2a and 2c that are horizontally folded, Underneath, the side plates 5a and 5c are bent and overlapped horizontally and placed on the bottom plate 4 plus the heat insulating member 2f. Further, on the hinge plate 17 plus the heat insulating members 2a and 2c, the inner lid plate 6b is housed in a state in which the projecting wing pieces 605 and 605 are folded, and further, a cooling agent, the inner cover 3 and the like are placed thereon. The outer cover plate 6a is covered leaving a space.

[Assembly procedure of insulated container]
Therefore, the procedure for assembling the heat insulating container from the folded state of FIGS. 5 to 7 will be described with reference to FIGS.
First, the outer lid plate 6a is opened as shown by arrow A in FIG. 8, and the inner lid plate 6b is taken out as shown by arrow B. Next, the side plates 5a and 5c bent as shown by arrows D and D are extended while lowering the bottom plate 4 as shown by the two-dot chain line in FIG. 8 and the side plate 5a as shown by the solid line in FIG. , 5c are raised vertically.

Next, as shown by arrows E and E in FIG. 9, the side plates 5b and 5d having the swinging structure are rotated so that the heat insulating members 2b and 2d are erected before the other heat insulating members 2a and 2c. Therefore, the heat insulating members 2b and 2d are also referred to as “pre-assembled heat insulating members 2b and 2d” for convenience of explanation.
Next, as shown by arrows F and G in FIG. 10, the heat insulating members 2a and 2c are rotated to the standing position after the pre-assembled heat insulating members 2b and 2d. Therefore, the heat insulating members 2a and 2c are also referred to as “rear heat insulating members 2a and 2c” for convenience of explanation.
When the rear assembly heat insulation members 2a and 2c pass between the first assembly heat insulation members 2b and 2d raised up first, the end surfaces of the rear assembly heat insulation members 2a and 2c (the band plate 203a of the edge cover 203) 2b, 2d strip-shaped step 16 (band plate 203b of edge cover 203) contacts only at the intersection as shown in FIG. 10, and rubs against the surface (sheet 202) of the pre-assembled heat insulating members 2b, 2d. Therefore, the belt plate 203a of the edge cover 203 of the rear assembled heat insulating members 2a and 2c is finally moved to the left and right belt-like step portions 16 of the front assembled heat insulating members 2b and 2d. Since it strongly abuts on (the strip 203b of the edge cover 203), the gap is minimized and excellent heat insulating performance is exhibited. Further, the end surfaces of the rear heat insulating members 2a and 2c are brought into contact with the strip-shaped step portions 16 of the front heat insulating members 2b and 2d, so that the rear heat insulating members 2a and 2c are connected to the front heat insulating members 2b and 2d and the side plate 5b. , 5d so-called “kanuki”, the side plates 5b, 5d are not moved even when an impact is applied from the outside, that is, the form stability of the box 1 is greatly improved.

  In the work up to this point, as shown in FIG. 11, the free end side of the rear assembly heat insulating members 2a and 2c is lifted above the horizontal, and a hand is inserted from the lateral triangular space 23 thus formed, so If the rotation of 2b and 2d is assisted, workability is very good.

Next, the inner cover 3 is mounted in the heat insulating container, and after containing a container such as blood for transfusion or frozen food, and a cryogen if necessary, as shown by arrow H in FIG. The inner lid plate 6b is inserted from the opening of the box 1 and covered on the upper surfaces of the heat insulating members 2a to 2d. Then, as shown in FIG. 3, the heat insulating member 2f of the inner cover plate 6b is fitted into the openings of the heat insulating members 2a to 2d, and both ends of the lid main body 600 of the inner cover plate 6b are hooked on the tops of the heat insulating members 2b and 2d. Stop in that position. Then, the tension blade pieces 605 and 605 of the inner lid plate 6b are rotated toward the side plates 5a and 5c, and the top portions of the tension blade pieces 605 and 605 are formed on the molding members 12a and 12c as shown in FIG. If forcedly pushed downward, the reaction force resisting the forcing force of the thrust blade pieces 605 and 605 acts as a thrust force, and the inner lid plate 6b is firmly locked by the thrust force.
Finally, as shown by arrow I in FIG. 10, the outer lid plate 6a is rotated and closed. The temperature of the heat insulating space 22 during transportation or storage is recorded every predetermined time by the temperature recording device 19, and the data can be read from the outside.

  In addition, after taking out the contents, it can be folded in the reverse order to the above, and the used cooling agent etc. can be stored in the space between the inner lid plate 6b and the outer lid plate 6a and sent in a compact form. Or keep it.

  The embodiments of the present invention have been described above, but the present invention is of course not limited to the above embodiments. For example, the band-shaped step 16 of the heat insulating member only needs to be formed at least on the pre-assembled heat insulating members 2b, 2d, and the other heat insulating members 2a, 2c, 2e, 2f are not provided with the band-shaped step 16 by the edge cover 203. The intended purpose of the invention can be reached. Of course, providing the edge cover 203 on all the heat insulating members 2a to 2f and providing the strip-shaped step 16 in a frame shape as in the embodiment improves the adhesion between the heat insulating members 2a to 2f and assembles and folds. It is an extremely effective means for realizing the lightness of

Further, in the embodiment, the front heat insulating members 2b and 2d are fixed to the side plates 5b and 5d having the swing structure, but the front heat insulating members 2b and 2d are also hinge plates 17 similar to the rear heat insulating members 2a and 2c. It can also be made to swing freely. Of course, the embodiment in which the pre-assembled heat insulating members 2b and 2d are directly fixed to the side plates 5b and 5d can save assembly costs and material costs as compared with the case where a separate hinge plate is provided.
Furthermore, in the embodiment, the rear assembly heat insulating members 2a and 2c are attached by the large hinge plate 17. However, the hinge plate 17 may be smaller than the rear assembly heat insulation members 2a and 2c, and the hinge structure uses a shaft. It may be a hinge fitting or the like.

In the embodiment, the box is formed of plastic cardboard, but may be formed of other materials. The box 1 made of plastic corrugated cardboard can be formed with a half-cut hinge structure without gaps that allow passage of heat, so that the hinges necessary for assembly and folding can be folded. An insulated container can be provided.
Further, in the embodiment, the hinge portion formed on the plastic corrugated cardboard is formed by a half-cut folding curve. However, the plastic corrugated cardboard hinge portion is such that the plastic corrugated cardboard is crushed into a V-groove shape by thermal deformation and bent at a thin portion. A hinge structure may be used.

Moreover, although vacuum heat insulating material was used as the heat insulating members 2a to 2f in the embodiment, other heat insulating materials can be applied.
In the embodiment, the temperature recording device 19 is attached to the rear assembly heat insulating member 2c. However, when used for an application that does not require temperature management, it is not necessary to attach such a temperature recording device 19.

It is a disassembled perspective view. It is a perspective view which shows an assembly state. It is a center longitudinal cross-sectional view of the longitudinal direction which shows an assembly state. (A) is the center longitudinal cross-sectional view of the transversal direction which shows an assembly state, (b) is the fragmentary sectional view cut | disconnected by the XX line of FIG. It is a perspective view which shows the state folded. It is a center longitudinal cross-sectional view of the transversal direction which shows the folded state. It is a center longitudinal cross-sectional view of the longitudinal direction which shows the folded state. It is a center longitudinal cross-sectional view of the transversal direction which shows the 1st process of an assembly. It is a center longitudinal cross-sectional view of the longitudinal direction which shows the 2nd process of an assembly. Center longitudinal sectional view in the short direction showing the third step of folding It is a center longitudinal cross-sectional view of the transversal direction which shows the auxiliary | assistant process of an assembly and folding. It is a disassembled perspective view of a box. It is a perspective view which shows the other form of a cover body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Box 2a-2f ... Heat insulation member (Rear assembly heat insulation member 2a, 2c, Pre-assembly heat insulation member 2b, 2d)
4 ... Bottom plate 5a-5d ... Side plate 6 ... Lid plate (outer lid plate 6a, inner lid plate 6b)
7, 7 ... Substrate 8 ... Core member 9a to 9h ... Half-cut hinge part 10 ... Mouth frame part 16 ... Band-shaped step part 203a ... End face 22 ... Thermal insulation space

Claims (4)

A foldable box that is composed of at least a bottom plate, a lid plate, and four side plates, and changes into an assembled state in which the side plates stand vertically or substantially vertically, and a folded state in which the side plates are horizontal or substantially horizontal;
The bottom plate, the cover plate, and a plate-like heat insulating member that covers the inner surface of each of the four side plates and forms a heat insulating space in the box,
Four heat insulating members corresponding to the side plates are configured to be swingable from a horizontal or substantially horizontal position to a vertical or substantially vertical position around a horizontal hinge portion,
Two opposing heat insulation members (hereinafter referred to as “pre-assembly heat insulation members”) were raised before the other two heat insulation members (hereinafter referred to as “rear-assembly heat insulation members”) and the rear-assembly heat insulation members were erected. It is configured to rotate between the pre-assembled heat insulating members to the standing position,
Further, at least the peripheral edge of the surface of the pre-assembled heat insulating member facing the heat insulating space is raised to form a strip-shaped step portion, and the end surface of the rear-assembled heat insulating member raised is applied to the strip-shaped step portion of the pre-assembled heat insulating member An insulated container characterized by being in contact with each other.   2. The heat insulation according to claim 1, wherein the band-shaped step portion of the pre-assembled heat insulating member is formed of a synthetic resin band plate, and the end surface of the rear assembled heat insulating member is covered with a synthetic resin band plate. container.   The side plate of the box is made of plastic corrugated board in which a synthetic resin core member is formed between two synthetic resin boards, and all the hinge portions provided on the side board are left with at least one plastic cardboard board. The heat insulating container according to claim 1, wherein the container is formed by a folding line that is cut or thinly crushed by thermal deformation. The heat insulation container according to any one of claims 1 to 3, comprising the following requirements (a) to (e):
(A) The upper part of the adjoining thing of the four side plates which comprise a box is connected, and a square frame part is comprised.
(B) The two opposing side plates are formed so as to be swingable by forming a hinge portion at the boundary portion with the mouth frame portion, and further, the pre-assembled heat insulating member is fixed to the inner side surface below the mouth frame portion.
(C) The other two side plates are each formed with a hinge portion at the boundary between the mouth frame portion and the bottom plate, and a horizontal hinge portion is provided at the center between the hinge portions so as to face the inside of the box. Be foldable.
(D) A rear assembly heat insulating member is swingably attached to the mouth frame at the upper part of the side plate in the item (c).
(E) In the folded state, the side plate of the item (b) is folded in a horizontal or substantially horizontal state under the rear assembly heat insulating member, and the side plate of the item (c) is bent below the box. Fold horizontally or nearly horizontally.

Images