JP2006051961A - Cold service thermal insulating container and reinforcing frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cold service thermal insulating container which is excellent in shape retaining strength when the front side is opened, can regulate shaking of left and right side wall parts, and can stably support a load from the upper part when the front wall part is opened under a stacked condition. <P>SOLUTION: The cold service thermal insulating container A comprises a plane view approximately rectangular container body 10 consisting of a bottom part 11, front and back wall parts 12 and 14 and left and right side wall parts 13 and 15 formed of a synthetic resin foam as a main material, and a lid body 20 covering its upper face opening part 10a. At least a part of the front wall part 12 of the container body 10 is openable outside through a connecting part 31a foldable at the lower end part in the cold service thermal insulating container A. A plane view approximately rectangular reinforcing frame 1 being continuous over the whole periphery including the openable front wall part 12a is attached on the upper part opening end part of the container body 10 to stabilize a front opening condition. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cold storage container that can be opened in front and used for storing and transporting articles such as fresh food that needs to be kept cold, and a reinforcing frame used therefor.

  As a cold storage container used for storage and transportation of various fresh foods, etc., it is composed of a container main body mainly composed of a synthetic resin foam and a lid covering the upper surface opening, and these container main body and the outer surface of the lid In a container that is covered with a flexible cover body, a container that is configured to be able to open a part of the side wall of the four circumferences, for example, the front wall part in a covered state is known from the usage requirements. It has been.

  That is, in the use of such a cold container, the contents are cooled and pre-cooled in a state where articles such as various fresh foods are stored and stacked in a large refrigerator (refrigerated room). In order to improve the flow of cool air to the inside (particularly the lower part) of the container, a structure in which a part of the side wall of each container, for example, the front wall part can be opened in a stacked state is often used. In addition, it may be necessary to check and remove some contents during storage and transportation in the stacked state. In this case, the front wall is opened with the lid and the stacked state. A possible structure is required. For this reason, various containers having a structure in which at least a part of the front wall portion, in particular, substantially the entire surface can be opened have been proposed.

  For example, in Patent Document 1 below, in a cold and warm box that includes a container body that includes a bottom portion, front and rear wall portions, and left and right sidewall portions, and a lid that covers an upper surface opening of the container body, the entire front wall portion is included. Alternatively, a configuration in which a part is configured to be openable to the outside has been proposed.

Further, in Patent Document 2 below, as a cold storage cover for a vehicle loading platform, which is used for covering a separate cold storage container formed of a heat insulating material, at least a part of the front surface of the lower hand is provided at the lower end. A structure that can be opened and closed as a fulcrum has been proposed.
JP 11-59739 A JP 2002-104543 A

  In the case of a container in which all or a part of the front wall portion is opened as in the cold insulation box of Patent Document 1, the front surface of the container is divided into right and left by the opening. For this reason, even if the cover is in a worn state, if a large load, such as a stacked load, is applied from the top, the left and right side walls are likely to expand outward or wobble, and the stacked state tends to become unstable. It is. In particular, when the container main body is formed so as to be foldable as in the container of Patent Document 1, the integrity of each side wall and the bottom is poor, and the occurrence of the above-described problem becomes more remarkable. Of course, in the case of a container in which the bottom surface of the container main body and the four sides of the left and right side wall parts and the rear wall part are integrally molded by the synthetic resin foam, the left and right side wall parts are easily wobbled in a state where the front wall part is opened, It is impossible to stably support stacked loads.

  Also in the case of the cold storage cover for loading platform in Patent Document 2, as in Patent Document 1, when the front surface is opened, the left and right side plates are likely to expand or wobble, and the front surface is opened in a stacked state. It is not suitable to do.

  The present invention has been made in view of the above, particularly in a cold-insulated container that can be opened forward, excellent shape retention strength at the time of front opening, even when the front wall portion is opened in a state in which many are stacked, Can control the expansion and wobbling of the left and right side walls, can stably support loads from the upper part such as stacking load, and can easily open and close the front wall, and can maintain a good cooling effect. A cold container is provided.

  The cold storage container of the present invention that solves the above problems comprises a substantially rectangular planar container body comprising a bottom part, front and rear wall parts and left and right side wall parts mainly formed of a synthetic resin foam, and an upper surface opening of the container body. A cold storage container, wherein at least a part of the front wall portion of the container body is provided so as to be openable to the outside via a foldable connecting portion at a lower end portion. Reinforcing frames that are continuous from the openable front wall portion to both front corners are attached to the open end portion. In particular, it is preferable that the reinforcing frame portion has a substantially rectangular plane that extends continuously over the entire circumference including the open front wall portion.

  According to this cold storage container, at least a part of the front wall portion of the front wall portion can be folded outward and opened in a state where an article such as a fresh product is stored and packaged inside. For example, in a large refrigerator, when the cold storage containers are stacked in a plurality of stages and the contents are cooled and pre-cooled, the front wall portion can be opened in the stacked state, and during transportation, Even when it is necessary to check the contents or remove some of the articles during storage, the front wall portion can be opened in the stacked state.

  Moreover, in the case of the present invention, even in the state where the front wall portion is opened as described above, the front wall portion at the opening end of the upper portion of the container body is continuous from the front wall portion to both front corners. In particular, when the reinforcement frame is continuous over the entire circumference so as to form a substantially rectangular plane, the opening end is continuously held and reinforced, so that Even if the left and right side walls of the container body that is in a separated state are sealed, the left and right side walls do not spread or wobble even if a large load is applied from the top. Excellent overall shape retention, and can stably support stacked loads. That is, it is possible to use the front wall portion in a stacked state without opening (front opening) without any problem.

  In particular, it is preferable that the container body is formed integrally with the entire surface including the bottom, the rear side wall, and the left and right side walls, except for the openable front wall portion. In addition to improving shape retention and stability against stacked loads when using the front opening, there is no risk of cold air flowing out from the bottom, rear side wall, and left and right side walls, thus maintaining a good cooling effect. .

  At least a part of the front wall portion is opened from the upper end to the bottom position, and a front wall portion fitted to the opening portion is connected to the bottom portion so as to be foldable at the lower end portion so as to be opened and closed. It can be made. Thereby, at least a part of the front wall part, for example, the front wall part at the center part can be largely opened to the bottom part. Moreover, in the non-open state, the front wall portion fits into the opening on the bottom, so that the closed state is stabilized and the outflow of cold air can be moderately suppressed.

  In the cold insulation container, the openable front wall portion is formed to be separated into an upper half portion and a lower half portion, and the upper half portion is connected to the lower half portion so as to be bent outward. It can be.

  In this case, a case where the entire front wall portion which can be opened in the front wall portion is opened largely and a case where only the upper half portion is opened can be selected according to the opening purpose in use. For example, during cooling and pre-cooling by stacking in a refrigerator, only the upper half can be folded outward to open, and the overhang can be reduced, enabling efficient stepping in a limited space. It can be stacked and a part of the front wall can be opened.

  In particular, when the upper half bent outward as described above is engaged with the lower half by an engaging means such as a hook-and-loop fastener, the outward protrusion in the opened state is further reduced. In this state, even when the vehicle is placed and moved on a cart or a pallet, the opened front wall portion does not come into contact with other objects.

  The opening of the front wall portion is formed with left and right end wall portions slightly left and left, and a reinforcing frame member is attached along at least the lower half portion and the bottom edge of the left and right end wall portions. It can be made. Thereby, the periphery of the said opening part can be reinforced and the damage by the opening / closing of a front wall part and repeated taking in / out of a content article can be prevented.

  A projecting engagement portion that projects inward of the opening along the inner side surface of the container and positions the front wall portion that fits into the opening is formed integrally with a portion along the both side portions of the reinforcing frame member. It can be made. As a result, when the front wall portion is fitted and closed from the open state to the opening portion, excessive entry of the front wall portion can be prevented and the front wall portion can be reliably fitted at a predetermined position. In addition, in the fitting state, the overhanging engagement portion can suppress the outflow of cold air from between the front wall portion and both side wall portions, and the cold insulation state can be favorably maintained.

  The container main body and the lid body have a container outer surface covered with a cover body, and the openable front wall portion is connected to the cover body so that it can be bent. Thereby, it is possible to protect the outer surface of the synthetic resin foam of the container main body and the lid, improve its durability, and bendable connecting parts for opening and closing the front wall portion can be formed by the cover body, Sufficient articulation and bending strength can be maintained.

  A part of the cover body is extended from both sides of the openable front wall part, and the extended part piece and a front side part where the extended part piece can come into contact with each other are freely engageable surfaces. An engagement means such as a fastener may be attached. Accordingly, the openable front wall portion can be satisfactorily held in the closed state, and the extension piece can close the gap between the front wall portion and both side portions, thereby preventing the cold air from flowing out in the closed state. Can be suppressed.

  The reinforcing frame is formed by connecting four substantially concave and concave frame members substantially corresponding to the front and rear and left and right sides to the open end of the upper part of the container body and connecting them in a substantially rectangular plane. Thereby, it has moderate shape retention strength and can reinforce the opening end part of the container main body upper part as mentioned above. The frame member corresponding to the front wall portion of the reinforcing frame has an inner plate extending downward, and the upper end portion of the front wall portion where the front wall portion fits into the opening of the front wall portion is abutted. What is provided so that it can touch is preferable, and when the said front wall part is fitted to the said opening part from the open state and is closed, it prevents that the upper end part of this front wall part penetrates too much In addition, the outflow of cold air from between the upper end portion and the reinforcing frame can be suppressed.

  In particular, the reinforcing frame is configured to be connected to a substantially rectangular plane by four frame members corresponding to the four sides of the front and rear and the left and right. Of the four frame members, The frame member forming the first pair is slightly shorter than the length of the side, and the frame member forming the second pair of the opposite sides of the other pair is bent and extended in the opposing direction along the corner portion. Thus, it is preferable to form a substantially U-shaped plane and to connect both end portions of the frame member and the end portions of the first frame member in a butted manner.

  According to the reinforcing frame having this configuration, as described above, deformation of the upper portion of the container body, in particular, expansion and wobbling of the left and right side wall portions can be restricted, and in particular, the other second frame member is bent at both ends thereof. Since the planar shape is substantially U-shaped by extension, the mutual expansion of the opposing side wall portions fitted to the both end portions can be restricted, and the shape retaining effect by the reinforcing frame becomes more stable.

  At both end portions of the first frame member, connecting pieces inserted under the horizontal plate portions at both end portions of the second frame member are projected, and engagement holes are formed in the connecting pieces. An engagement protrusion that can be fitted into the engagement hole is provided on the lower surface of the horizontal plate portion of the frame member placed thereon, and the engagement hole is attached to the opening end of the container body. Those in which the engaging protrusions are fitted are particularly preferably used. This facilitates the assembly of the reinforcing frame and allows the frame members to be connected to each other at the same time as being attached to the upper end opening of the container body.

  As the reinforcing frame, the inner and outer side plates of the second frame member having a substantially U-shape in plan view are reversely hooked so as to prevent detachment when fitted to the opening end of the upper portion of the container body at every required interval in the longitudinal direction. Are preferably provided. That is, once the frame member is attached to the opening end of the upper part of the container main body, the frame member does not easily come off due to the reverse hooking action, and can maintain a stable attachment state. In addition, the one frame member is not easily detached because the connecting pieces at both ends are inserted and engaged under the other frame member.

  The cold storage container of the present invention can not only appropriately open at least a part of the front wall part as needed in a state where articles such as fresh food are stored and stacked in the inside. In particular, since the substantially rectangular planar reinforcing frame is attached to the opening end of the upper part of the container body and is held continuously, the reinforcing frame can be used even when the front wall portion is opened as described above. The movement of the left and right side walls is sealed, and even if a large load is applied from the top, there is no risk of the left and right side walls expanding or wobbling, and the shape of the entire container in the front open state is excellent, Can support stacked loads with good stability. Therefore, it is possible to easily use the front wall portion in a stacked state.

  Particularly, when the bottom surface, the rear side wall portion, and the left and right side wall portions of the container main body are integrally formed and only the front wall portion of the front wall portion is connected and configured, the four wall surfaces are integrated. In addition to improving the stability and shape retention, it is possible to more stably support the stacking load, and also to maintain the cooling effect in the closed state.

  Further, by using the reinforcing frame of the present invention, it is composed of four substantially cross-sectioned frame members corresponding to the open end portions of the front, rear, left and right sides of the upper portion of the container body, and each can be easily molded. In addition, it can be easily attached and connected to the opening end portion of the upper portion of the container body, and can exhibit a good reinforcing effect when attached to the opening end portion of the upper portion of the container body.

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

  FIG. 1 is a perspective view in which a cover of a cold insulation container according to the present invention is opened and a front wall portion is opened, a part of which is cut off, FIG. 2 is a cross-sectional view of a packaging state with a cover, and FIG. FIG. 4 is a partially enlarged view of the same, FIG. 5 is a cross-sectional view of the same part, and FIG. 6 is an exploded perspective view of the container main body (the cover body is omitted) excluding the front wall part. 7 is an enlarged perspective view showing an end structure of the frame member of the front wall portion and the frame member of the side wall portion, FIG. 8 is a sectional view of the connected state, and FIG. 9 is a substantially U-shaped frame member. FIG. 10 is an enlarged sectional view of a part of the frame member on the rear wall side, FIG. 11 is an enlarged sectional view showing the attachment state of the reinforcing frame member at the opening of the front wall portion, and FIG. FIG. 13 and FIG. 14 are a perspective view and a sectional view showing a use state of the cold insulation container, respectively. FIG. 13 and FIG. 14 are sectional views of the reinforcing frame member in a state where the front wall portion is closed.

  As shown in the figure, the cold insulation container A of the present invention is a substantially rectangular planar container body 10 comprising a bottom part 11, front and rear side wall parts 12, 14 and left and right side wall parts 13, 15 formed mainly of a synthetic resin foam F. And a lid 20 that covers the upper surface opening 10a of the container body 10. The container body 10 and the lid body 20 are configured by covering the container outer surface of the synthetic resin foam F, which is a main component, with cover bodies 30 and 40 configured using a flexible waterproof sheet material. ing. As will be described later, at least a part of the front wall portion 12 of the container body 10 is provided so as to be openable to the outside via a connecting portion 31a formed by a cover body 30 that can be bent at the lower end portion. 12a shows the front wall part which can be opened.

  In the case of the present invention, a reinforcing frame 1 having a substantially rectangular plane that is continuous over the entire circumference including the openable front wall portion 12a is attached and reinforced at the opening end of the upper portion of the container body 10. ing.

  The reinforcing frame 1 is formed of a rigid material such as a synthetic resin material or a metal material, and corresponds to the upper ends of the four sides of the container body 10 by the front and rear wall portions 12 and 14 and the left and right side wall portions 13 and 15. The frame member 2, 3, 4, 5 has a substantially cross-sectional shape with four cross sections, and the frame members 2, 3, 4, 5 are fitted and attached to the opening end of the upper portion of the container body 10. It is connected to a substantially rectangular plane corresponding to the container body 10.

  As shown in an exploded view in FIG. 6, of the four frame members 2, 3, 4, and 5, one opposite side, for example, the frame members 2 and 4 forming a first pair of front and rear sides are the sides The frame members 3 and 5 that are slightly shorter than the length of the other side and that form the second pair of opposite sides, for example, both the left and right sides, have both ends 3a, 3a and 5a, 5a at the corners of the opening end. Are bent and extended in opposite directions to form a substantially U-shaped plane, and the end portions 3a, 5a of the frame members 3, 5 and the end portions 2a, 4a of the first frame members 2, 4 are butted. Are formed so as to be connected to each other.

  As an articulation means, as shown in enlarged view in FIGS. 7 and 8, the end portions 2a and 4a of the first frame members 2 and 4 are connected to the end portions 3a and 2a of the second frame members 3 and 5, respectively. The connecting pieces 2b and 4b inserted below the horizontal plate portion 5a project, and the engaging pieces 2c and 4c are formed in the connecting pieces 2b and 4b, and the frame member 3 placed on the connecting pieces 2b and 4b. , 5 are provided with engaging projections 3c, 5c that can be fitted into the engaging holes 2c, 4c, and in the attached state to the open end of the container body 10, the engaging hole 2c. , 4c can be engaged with the engaging projections 3c, 5c. Thereby, the assembly of the reinforcing frame 1 is facilitated, and the frame members 2, 3, 4 and 5 can be connected to each other at the same time as being attached to the opening end of the container body 10.

  The second frame members 3 and 5 having a substantially U-shaped plane in the reinforcing frame 1 are fitted to the opening end portion of the upper portion of the container body 10 at every required interval in the longitudinal direction of the inner and outer side plates having a reverse concave shape in cross section. Reverse hooks 3d and 5d are provided to prevent the container from coming off at the time, and once attached to the open ends of the container body 10 (upper ends of the left and right side walls 13 and 15 in the figure), The reverse saddles 3d and 5d bite into the synthetic resin foam F and become caught so that they can be prevented from floating or coming off from the opening end (see the enlarged view of FIG. 9). This also allows the one frame member 2 and 4 to be stably held in the attached state via the connecting pieces 2b and 4b.

  Further, in the case of the figure, among the four frame members 2, 3, 4 and 5 constituting the reinforcing frame 1, the frame member 4 fitted and attached to the upper end portion of the rear wall portion 14 has a longitudinal For each required interval in the direction, a reinforcing rib 4d to be inserted into the slit 14d at the upper end of the rear wall portion 14 is provided in the attached state, and a downward piercing pin 4e that can pierce the rear wall portion 14 is provided. It is provided so that the adhesion state can be maintained with good stability. A reinforcing rib 2d is also provided on the frame member 2 on the front wall portion 12 side.

  The container body 10, except for the openable front wall portion 12 a, includes a bottom portion 11, a rear side wall portion 14, and left and right side wall portions 13, 15 as a whole by a synthetic resin foam as a main body. It is molded into. The front wall portion 12 has end wall portions 12e and 12e that are slightly wide on the left and right sides of the front wall portion 12 as shown in FIG. The central portion in the width direction is opened from the upper end of the front wall portion 12 to a position near the upper surface of the bottom portion 11, and is molded separately from this and is fitted to the opening portion 16 under the reinforcing frame 1. A front wall portion 12a is connected to the bottom portion 11 via a connecting portion 31a that can be bent by the cover body 30, and is provided so as to be openable to the outside.

  Therefore, the cover body 30 is configured such that each surface portion corresponding to the bottom portion 11, the front and rear wall portions 12, 14 and the left and right side wall portions 13, 15 of the container body 10 is connected by sewing means or the like, and the front wall portion The front surface portion 32 corresponding to 12 is separated from the side surface portions corresponding to the left and right side wall portions 13 and 15 and is connected to the front lower portion 31 which is continuous from the portion corresponding to the bottom portion 11 so as to be bent. The wall portion 12a is provided so as to be openable and closable via the connecting portion 31a that can be bent by being attached to the front surface portion 32.

  Further, the front side portions 30a, 30a continuous from the left and right side portions of the cover body 30 are attached to the front surfaces of the end wall portions 12e, 12e by an adhesive means or the like, and the upper end portions thereof are the end wall portions 12e, 12e, 4e with respect to the upper end portion of 12e, preferably a part of the reinforcing frame 1 fitted and attached to the upper end portion, for example, the end portions 3a and 5a of the second frame members 3 and 5 having a plane U shape. And it is fixed by the stop means 36 and 36 which penetrates this part like FIG. 5, and it is provided so that the floating and removal from the front surface of the said end wall part 12e and 12e may be prevented. 5, 7, and 8 is a notch that allows the stopper means 36 to pass therethrough. A similar notch is also provided at the end of the frame member 5. The notch 3e can be a through hole.

  The openable front wall portion 12a may be in the form of a single plate. In the illustrated embodiment, the front wall portion 12a is separately formed into an upper half 12b and a lower half 12c. By being attached to the front surface portion 32 of the cover body 30, the upper half portion 12b is connected to the lower half portion 12c so that it can be bent outward at a connection portion 33 by the front surface portion 32. That is, in the state where the upper surface of the container body 10 is covered with the lid 20, only the upper half 12b of the front wall portion 12a can be bent outward and opened. The upper half portion 12b and the lower half portion 12c are held outside the front surface portion 32 by the cover body 30 in a state where the upper half portion 12b is bent and joined to the outside of the lower half portion 12c. For this purpose, engaging means 34a, 34b such as hook-and-loop fasteners that can be engaged with each other are provided.

  On both sides of the openable front wall portion 12a, a part of the front surface portion 32 of the cover body 30 is extended laterally, and the extended portion pieces 32a, 32a, the extended portion pieces 32a, Engaging means 35a, 35b such as hook-and-loop fasteners that can be engaged with each other are attached to both front side portions 30a, 30a that are continuous from the left and right side portions of the cover body 30 that can be in contact with 32a. The front wall portion 12a can be held in the closed state in which the opening portion 16 is fitted by the engagement of the coupling means 35a and 35b. The extension piece 32a is formed separately from the engaging means 35a in portions corresponding to the upper half 12b and the lower half 12c, but the extension piece 32a may be continuous. Good.

  In the case of the figure, the frame member 2 having a substantially inverted concave section corresponding to the front wall portion 12 of the reinforcing frame 1 has an inner plate 2f extending downward, and the front wall portion 12a is When fitted into the opening 16, the fitting position is regulated so that the upper end of the opening 16 abuts against the extension of the inner plate 2 f, and no more enters the inside, and the front wall portion 12 a Cold air outflow from the gap between the frame member 2 can be prevented.

  Further, the opening 16 of the front wall portion 12 is viewed from the front surface made of a synthetic resin molding or the like along at least the lower half of the left and right end wall portions 12e, 12e and the edge of the bottom portion 11. An L-shaped reinforcing frame member 18 is fixed and attached by an adhesive means or the like, so that damage due to repeated opening and closing of the front wall portion 12a and taking in and out of the contents article can be prevented. In the case of the figure, the reinforcing frame member 18 is divided and formed into symmetrical left and right portions 18a, 18a, but it can also be integrally formed. The reinforcing frame member 18 is attached by a vertical side portion being fitted to the end wall portion 12e and a piercing pin 18c that is provided in the lateral direction portion being pierced by the end portion of the bottom portion 11.

  Overhanging engaging portions 18b and 18b projecting inward of the opening 16 along the inner side surface of the container are integrally formed at portions along the end wall portions 12e and 12e on both sides of the reinforcing frame member 18, respectively. Further, both end portions of the front wall portion 12a fitted into the opening 16 are provided so as to abut against the overhanging engaging portions 18b and 18b. As a result, the overhanging engagement portions 18b, 18b prevent the front wall portion 12a fitted into the opening 16 from entering the container and the front wall portion 12a and the end wall portion 12e. It is designed to prevent cold air from flowing out.

  The overhanging engagement portions 18b and 18b are formed so as to have a gap S between the inner surfaces of the left and right side wall portions 13 and 15 for inserting and holding the plate-shaped cool storage body 60 as shown in FIG. Yes. The gap S may not be provided depending on the shape and storage form of the cold storage body 60. Reference numeral 19 is an auxiliary plate provided to eliminate a step due to the mounting of the reinforcing frame member 18 on the front surfaces of the end wall portions 12e, 12e, and is a resin similar to the synthetic resin foam F constituting the container body 10. It consists of a foamed plate.

  Reference numeral 37 denotes an operation member for opening and closing the front wall portion 12a, and is provided so that the front wall portion 12a fitted in the opening 16 can be pulled out. Reference numeral 38 denotes a handle portion attached to the left and right side portions of the cover body 30. Reference numeral 11 a is a convex portion formed on the upper surface of the bottom portion 11. Reference numeral 21 denotes a locking piece provided on the lid body 20 for maintaining the attached state, and the engaging piece 21 and the outer surface of the cover body 30 of the container body 10 are mutually engaged in the attached state. Engaging means 22, 39 such as a hook-and-loop fastener that can be combined are provided. The engaging piece and the engaging means can be provided on the front and rear wall side.

  Note that the cover body 30 of the container body 10 and the cover body 40 of the lid body 20 are made of only a flexible waterproof sheet material, and a plate-like material having rigidity such as plastic cardboard is used as a core. Then, the surface of which is covered with a waterproof sheet material can also be used.

  Examples of the waterproof sheet material constituting the cover bodies 30 and 40 include materials such as an aluminum vapor deposited film and sheet, polyethylene cloth, tarpaulin (PVC, EVA), polyester toughener, and nylon toughener. Of course, it may be made of a cloth other than the waterproof sheet material, synthetic resin, paper, or the like. The sheet material is not necessarily waterproof, but is preferably a waterproof sheet material from the viewpoint of ease of cleaning and wiping.

  The container body 10 and the lid body 20 are made of a synthetic resin foam F obtained by coating a synthetic resin sheet as a protective layer mainly on the inner side surface of the container with a laminating means or the like. This is effective in preventing breakage during use and is difficult to get dirty.

  The synthetic resin foam used for the container body 1 and the lid body 2 is formed by foam molding using pre-expanded particles obtained by pre-expanding expandable synthetic resin particles as raw materials. The foamable synthetic resin particles are obtained by impregnating a synthetic resin with a physical foaming agent and foamed by heating, and include those pre-foamed. In the present invention, so-called pre-expanded particles that have been pre-expanded are mainly used.

  Examples of the synthetic resin material constituting the foamable synthetic resin particles include styrene-modified polyethylene resin, polystyrene, high impact polystyrene, styrene-maleic anhydride copolymer, styrene-acrylonitrile copolymer, styrene-acrylonitrile- Polystyrene resins such as butadiene copolymers, polyolefin resins such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymers, polyester resins such as polyethylene terephthalate, polyurethane, and the like can be used. A mixture of these synthetic resins or a copolymer of monomers can also be used.

  Examples of the physical foaming agent mixed in the resin include aliphatic hydrocarbons such as propane, butane, pentane and hexane, aliphatic cyclized hydrogens such as cyclopentane and cyclobutane, and acetone methyl ethyl ketone. Ketones, alcohols such as methanol and ethanol isopropyl alcohol, water, carbon dioxide and the like can be used.

  The synthetic resin sheet for covering at least the inner surface of the foamed resin foam is polystyrene, high impact polystyrene, styrene-maleic anhydride copolymer, styrene-acrylonitrile copolymer, styrene-acrylonitrile-butadiene. Films formed of polystyrene resins such as copolymers, polyolefin resins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymers, polyester resins such as polyethylene terephthalate, polyamide resins such as nylon, etc. A sheet or a composite material thereof may be used, and a material having the same quality as the container body can be used.

  Furthermore, as the synthetic resin sheet, a vapor-deposited film or sheet on which a metal such as aluminum is deposited, or a composite material in which aluminum or the like is thinly formed and laminated on the resin film or sheet can be used. When a vapor-deposited film or a thin aluminum film is used, the sustainability of the cooling effect is improved, and the appearance is good and more preferable.

  In the use of the cold insulation container A of the above embodiment, the openable front wall portion 12a of the front wall portion 12 of the container body 10 is fitted into the opening 16 and closed as shown in FIG. Thus, in a state where an article (not shown) such as a fresh product to be kept cold is stored in the container main body 10 and further covered with the lid 20 inside the container, At least a part of the front wall portion 12a of the wall portion 12 can be opened to the outside.

  For example, when the contents are cooled and pre-cooled in a large refrigerator, the cold storage containers A are stacked in a plurality of stages while being covered, and at least a part of the front wall portion 12 of the container body 10 is placed. The front wall portion 12a can be opened outward while being stacked. Similarly, when the content article is taken out during storage and transportation in the packaged state, the front wall portion 12a can be opened to the outside while being stacked.

  When the front wall portion 12a is formed separately as shown in the upper half portion 12b and the lower half portion 12c, as shown in FIGS. 13 and 14, the upper half portion in the front wall portion 12a. Only 12b can be bent and opened outward with respect to the lower half 12c, or the entire upper half 12b and lower half 12c can be opened outward as shown in FIG. That is, the above open state can be selected according to the usage needs.

  In particular, when only the upper half portion 12b of the front wall portion 12a is bent outward and engaged with the lower half portion 12c by the engaging means 34a, 34b and released, the outward protrusion is reduced, The front wall portion 12a can be efficiently stacked in a limited space so that a part of the front wall portion 12 is opened. Even when the front wall portion 12a is moved on the carriage or the pallet in the opened state, the opened front wall portion 12a There is no risk of contact with other objects, and precooling work and the like can be easily performed.

  Moreover, in the state where the front wall portion 12a is opened as described above, the open end portion of the upper portion of the container body 10 is continuously held by the substantially rectangular planar reinforcing frame 1 attached to the end portion. Since the movement of the left and right side wall portions 13 and 15 of the container main body 10 that is separated from the front surface is sealed and a large load is applied from the top, the left and right side wall portions 13 and 15 are expanded. There is no fear of wobbling or wobbling. Therefore, the shape of the entire container in the front open state is excellent, and a large load from the upper part such as a stacked load can be stably supported. Thus, the use of opening the front wall portion 12 in a stacked state (use of front opening) is possible without any problem.

  In the state in which the front wall portion 12a is fitted into the opening 16 and closed, the front wall portion 12a has an upper end extending from the inner plate 2f in the frame member 2 on the front side of the reinforcing frame 1. And both end portions are positioned in contact with the overhanging engaging portions 18b and 18b of the reinforcing frame members 18 on both sides, and further, the extended portion pieces 32a on both sides and both front side portions of the container body 10 Even if the front wall portion 12a is configured to be freely fitted by the engagement of the engagement means 34a and 34b of the 30a and 30a, the closed state is stably maintained. The cool air flow from the air can be suppressed, and the cold state can be maintained well.

  In the above-described embodiment, the cold insulation container that does not use a shelf plate has been described. In addition, as in the embodiment of FIGS. A step 14a for receiving the partition shelf 50 is provided at the same height as the upper ends of the overhang engaging portions 18b, 18b of the reinforcing frame member 18, and the step 14a and the overhang engaging portion are provided. In the container configured to receive and support the partition shelf plate 50 on 18b, 18b, the opening structure of the front wall portion 12, the configuration of the reinforcing frame 1 and the like can be implemented in the same manner as described above. In this embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  In this embodiment, on the inner surface of the rear wall portion 14, a plurality of longitudinal recesses 14b extending from the opening end portion to a required height position for receiving the partition shelf plate 50 are formed at intervals. The lower end step portion of the recess 14b is formed as the shelf receiving step 14a.

  The width, interval, number, and the like of the stepped portions 14a by the recessed portions 14b can be appropriately set in consideration of the stability and strength of the receiving state. For example, as shown in the figure, in addition to the case where the step portion 14a is formed at three locations near the both ends and the center portion, it is also possible to form only at the vicinity of both end portions, or one slightly wide step portion at the center portion. It can also be formed.

  The partition shelf 50 received and supported by the stepped portion 14a and the overhanging engaging portion 18b is formed of a substantially rectangular plate-like body that can be inserted into the container body 10, and corresponds to the rear wall portion 14. A protruding edge 51 is formed at a position corresponding to the concave portion 14b of the side portion to be engaged with the concave portion 14b and locked to the stepped portion 14a. In the case of the figure, it is formed so that the cool storage body 60 can be inserted and held between the partition shelf plate 50 and the inner surfaces of the left and right side wall portions 13 and 15 of the container body 10.

  The partition shelf board 50 can use various plate-like bodies having strength capable of receiving articles to be kept cold, such as plastic cardboard, foamed or non-foamed plastic board and other various boards. However, it is lightweight, easy to handle and strong, and is particularly preferably used.

  The regenerator 60 can be a regenerator having various configurations having a regenerator effect in addition to a substantially rectangular plate shape in which a liquid regenerator is enclosed inside a synthetic resin container.

  In any of the above-described embodiments, the case where the lid 20 is configured to be attached separately from the container body 10 has been described. It is also possible to connect the cover body 40 to the rear surface portion of the cover body 30 of the container body 10 so as to be openable and closable.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used as a cold storage container for storing and transporting fresh products such as fruit vegetables, meats, and seafood and other articles that require cold storage, and also suitably used as a take-out container for various products that require cold storage. it can.

FIG. 4 is a perspective view in which a lid of a cold insulation container according to one embodiment of the present invention is opened and a part of a state in which a front wall portion is opened is missing. It is sectional drawing of the packaging state which covered the cover body same as the above. It is a top view which abbreviate | omits and shows a cover body same as the above. It is a one part enlarged view same as the above. It is sectional drawing of the VV line of the previous figure. It is a disassembled perspective view of the container main body (a cover body is abbreviate | omitted) except a front wall part. It is an expansion perspective view which shows the edge part structure of the frame member of a front wall part same as the above, and the frame member of a side wall part. It is sectional drawing of a connection state same as the above. It is an expanded sectional view of a plane substantially U-shaped frame member. It is a partial expanded sectional view of the frame member by the side of a rear wall part. It is an expanded sectional view which shows the attachment state of the frame member for reinforcement in the opening part of a front wall part. It is sectional drawing of the part of the frame member for reinforcement of the state which closed the front wall part. It is a perspective view which shows the use condition of a cold storage container same as the above. It is sectional drawing same as the above. It is the perspective view which abbreviate | omitted the reinforcement frame of the container main body except the front wall part of the cold storage container which shows the other Example of this invention. It is sectional drawing of the packaging state which covered the cover body same as the above.

Explanation of symbols

A Cold storage container S Gap 1 Reinforcement frame 2, 3, 4, 5 Frame member 2b, 4b Connection piece 2c, 4c Engagement hole 2d, 4d Reinforcement rib 3c, 5c Engagement protrusion 3d, 5d Reverse hook 2f Inner plate 10 Container body DESCRIPTION OF SYMBOLS 11 Bottom part 12,14 Front-and-rear wall part 12a Openable front wall part 12b Upper half part 12c Lower half part 12e End wall part 14a Step part 14b Recessed part 14d Slit 13,15 Left and right side wall part 16 Opening part 18 Reinforcing frame member 18a, 18a Left and right parts 18b, 18b Overhanging engagement part 20 Lid 21 Locking piece 22 Engagement means 30 Cover body 30a, 30a Front side both sides 31 Front lower part 31a Connection part 32 Front part 32a, 32a Extension part 34a, 34b Engagement Coupling means 35a, 35b Engaging means 36 Stopping means 40 Cover body 50 Partition shelf 51 Projection edge 60 Example body

Claims (14)

The container body is formed of a synthetic resin foam as a main component, and includes a substantially rectangular container body composed of a bottom part, front and rear wall parts, and left and right side wall parts, and a lid that covers the upper surface opening of the container body. In the cold insulating container in which at least a part of the wall portion is provided so as to be openable to the outside via a bendable connecting portion at the lower end portion,
A cold-retained container characterized in that a continuous reinforcing frame from the openable front wall portion to both front corners is attached to the open end of the container main body.   The cold storage container according to claim 1, wherein the reinforcing frame portion has a substantially planar rectangular shape that is continuous over the entire periphery including the openable front wall portion.   The cold storage container according to claim 1 or 2, wherein the container body is integrally formed as a whole including four surfaces of a bottom part, a rear side wall part, and left and right side wall parts except for the openable front wall part.   At least a part of the front wall portion is opened from the upper end to the bottom position, and a front wall portion fitted to the opening portion is connected to the bottom portion so as to be foldable at the lower end portion so as to be opened and closed. The cold storage container according to any one of claims 1 to 3.   5. The cold insulation according to claim 4, wherein the openable front wall portion is separately formed into an upper half portion and a lower half portion, and the upper half portion is connected to the lower half portion so as to be bent outward. container.   The opening of the front wall portion is formed with left and right end wall portions slightly left and left, and a reinforcing frame member is attached along at least the lower half portion and the bottom edge of the left and right end wall portions. The cold-reserving container according to claim 4 or 5.   In the portion along the end wall portions on both sides of the reinforcing frame member, there is an overhanging engaging portion that protrudes inward of the opening along the inner side surface of the container and positions the front wall portion that fits into the opening. The cold storage container according to claim 6 formed integrally.   The said container main body and a cover body are the container outer surfaces covered with the cover body, The said openable front wall part is connected with the said cover body so that bending is possible, The any one of Claims 1-7 The cold storage container described in 1.   A part of the cover body is extended from both sides of the openable front wall portion, and the extended portion piece and a front side portion where the extended portion piece can come into contact with each other can be engaged with each other. The cold-reserving container according to claim 8, wherein the combination means is attached.   The reinforcing frame is formed by connecting four substantially concave and concave frame members substantially corresponding to the front and rear and left and right sides to be fitted and attached to the opening end of the upper part of the container body, and connected to a substantially rectangular plane. Item 10. The cold storage container according to any one of Items 1 to 9.   The frame member corresponding to the front wall portion has an inner plate extending downward so that the front wall portion can be brought into contact with the upper end portion of the front wall portion that fits into the opening of the front wall portion. The cold storage container according to claim 10 provided. A cold insulating container comprising a container body having a substantially rectangular plane and a lid that covers an upper surface opening of the container body, wherein at least a part of a front wall portion of the container body is provided to be openable to the outside. A reinforcing frame attached to the opening end of the upper part of the main body,
The four frame members corresponding to the four sides on the front and rear sides and the left and right sides are configured to be connected to a substantially rectangular plane. Among the four frame members, the frame members forming the first pair of one opposite sides are The frame member that is slightly shorter than the length of the side and forms the second pair of the opposite sides of the other side, has both ends bent and extended in the opposing direction along the corner portion to form a substantially U-shaped plane, A reinforcing frame characterized in that both end portions of the frame member and the end portion of the first frame member are connected in a butted manner.   At both end portions of the first frame member, connecting pieces inserted under the horizontal plate portions at both end portions of the second frame member are projected, and engagement holes are formed in the connecting pieces. An engagement protrusion that can be fitted into the engagement hole is provided on the lower surface of the horizontal plate portion of the frame member placed thereon, and the engagement hole is attached to the opening end of the container body. The reinforcing frame according to claim 12, wherein the engaging protrusion is fitted. The inner and outer side plates of the second frame member having a substantially U-shape in a plane are provided with reverse ridges that are prevented from coming off when fitted to the opening end of the upper portion of the container body at every required interval in the longitudinal direction. Item 14. The reinforcing frame according to Item 13.

Images