JP2008082648A - Heat insulating panel connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating panel connection structure having greatly improved connecting strength when a protruded frame material and a recessed frame material provided on both sides of a pair of surface materials are engaged with each other. <P>SOLUTION: A heat insulating panel 12 has a heat insulating material 18 filled in a space encircled by the pair of surface materials 14 and the protruded frame material 20 and/or the recessed frame material 30 at the ends thereof. It comprises a wedged engaging part 36 protrudedly formed in a recessed portion 34 of the recessed frame material 30, and an engaged part 26 recessedly formed in a protruded portion 24 of the protruded frame material 20. When the protruded portion 24 of the protruded frame material 20 is inserted into the recessed portion 34 of the recessed frame material 30 of the adjacent heat insulating panel 12, the engaging part 36 of the recessed frame material 30 is removably engaged with the engaged part 26 of the protruded frame material 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connection structure for a heat insulating panel used in a prefabricated refrigerator / freezer, a refrigerator / freezer warehouse, a low-temperature storage, a cold storage, a storage, a warm storage, a refrigerator / refrigerator, a clean room, and the like.

  Conventionally, prefabricated refrigerators / freezers have been considered to have excellent heat insulation and airtightness in the seal between the heat insulation panel and the heat insulation panel that constitutes the wall because the heat insulation and airtightness inside the warehouse have been regarded as important. Wet caulking agents have been commonly used. That is, the heat insulation panel 112 for refrigeration as shown in FIG. 18 is provided with the convex frame member 120 on one side edge portion of the pair of surface materials 114 and 114 provided at a predetermined interval and the other side edge. It is manufactured by providing a concave frame material 130 at the part and filling a space 116 surrounded by both surface materials 114, 114, the convex frame material 120 and the concave frame material 130 with a heat insulating material 118 such as polyurethane foam. FIG. 19 shows a refrigeration insulation panel 112A that is thicker than the refrigeration insulation panel 112.

  When the heat insulating panels 112 and 112 are connected to each other, the other heat insulating panel 112 (in the concave frame member 130 provided on the other side edge of the adjacent one heat insulating panel 112 (left side in the figure). The convex frame member 120 provided at one side edge of the right side in the figure is engaged. Further, a wet caulking agent is applied between the adjacent heat insulating panel 112 and the concave frame member 130 and the convex frame member 120 of the heat insulating panel 112 to seal between the two heat insulating panels 112. As described above, the sealing performance between the heat insulation panels 112 has been secured by caulking in the past. However, the construction of wet caulking agents, especially large heat insulation panels and high places, requires a large number of man-hours and is effective for construction and curing. It took time.

  In order to solve this problem, a heat insulating panel that does not require a wet coking agent has been used. In this case, the heat insulating panel 112 is provided with a rotary lock including a hook member 140 and a receiving member 142 with which the hook member 140 is engaged, as shown in FIG. Further, packings 146 made of an elastic resin are integrally formed at both ends of the convex frame member 120. FIG. 21 shows a refrigeration insulation panel 112A thicker than the refrigeration insulation panel 112 shown in FIG. 20. The projection frame material 120 has two projections 124 and the recess frame material 130 has two recesses 134. There are places. Then, the cap 144 provided on the surface material 114 is removed, the hook member 140 is rotated and protrudes, and the adjacent heat insulating panel 112 (112A) is strongly connected to each other by engaging and attracting the receiving member 142. It was connected in close contact.

  Thereby, while adjoining heat insulation panel 112 was connected reliably, the sealing performance between each heat insulation panel 112 was improved. However, the heat insulating panel 112 provided with the rotary lock can surely seal and connect the heat insulating panels 112, but the structure is complicated and it is difficult to manufacture. In addition, material costs, processing costs, and assembly costs for the rotary lock, the surface material 114, the convex frame material 120, the concave frame material 130, and the like are incurred, which has been a factor in increasing costs. In particular, when remodeling the heat insulation panel 112 such as a custom size or an extension, it is necessary to design all the lock positions of the rotary lock, which requires enormous design man-hours. Further, since the hook member 140 is attached by processing the surface material, the processed portion is exposed. For this reason, in the food handling industry, there has been a tendency to be avoided from the viewpoint of contamination by foreign matter (cause of cap dropping or dust accumulation).

  Therefore, a heat insulating material is filled between two metal plates, and a concave portion and a convex portion that are fitted to each other are provided on both side edge portions of each heat insulating panel, and the inner surface of the concave portion formed on the edge portion of one heat insulating panel. Adhere the heat-insulating packing with an adhesive, and attach the packing with a plurality of fin-shaped sliding contact pieces on the outside on both sides in the longitudinal direction of the convex part formed on the edge of the other heat-insulating panel. Insulating panels have been proposed. This thermal insulation panel connects a plurality of thermal insulation panels quickly and reliably by engaging the concave part of one thermal insulation panel and the convex part of the other thermal insulation panel via packing, and insulates each thermal insulation panel from each other. Can be connected well, such as property and airtightness (see, for example, Patent Document 1).

In addition, another heat insulating panel in which a heat insulating material is filled in a space surrounded by a pair of surface materials whose edges are bent in a direction perpendicular to each other, a male frame material on both sides, and a female frame material has been proposed. The male frame member of the heat insulating panel is provided with a pair of connecting legs having locking claws at the tip, and the female frame member is provided with a hook-shaped step portion in a fitting groove that engages with the locking claws. Then, the adjacent heat insulation panels are engaged with each other by the engaging claws of the male frame member and the hook-shaped step provided in the fitting groove of the female frame member, and the connection legs of the male frame member are connected. And the central part of the female frame member are adhered and connected with a connection seal (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 56-65019 Utility model registration No. 2511184

  However, the heat insulating panel of Patent Document 1 connects adjacent heat insulating panels and heat insulating panels only by engaging the convex frame material in the concave frame material. In addition, the heat insulating panel of Patent Document 2 is such that a plate-like connection leg is erected from the side edge of the heat insulating panel opposite to the concave frame material, and its tip is engaged in the concave frame material. When the stress is applied, the connecting leg falls down. For this reason, both had the fault that the connection strength of the adjacent heat insulation panel was weak.

  The present invention has been made to solve the problems of the related art, and greatly increases the connection strength when the convex frame member and the concave frame member provided at the ends of the pair of surface members are engaged. It aims at providing the connection structure of the improved heat insulation panel.

  In other words, the heat insulating panel connection structure according to the first aspect of the present invention is a heat insulating structure in which a space surrounded by a pair of surface materials and convex frame materials and / or concave frame materials provided at the ends thereof is filled with a heat insulating material. The panel includes a hook-shaped engaging portion that protrudes into the concave portion of the concave frame member and an engaged portion that is concavely formed in the convex portion of the convex frame member, and the convex portions of the convex frame member are adjacent to each other. When inserted into the concave portion of the concave frame member of the heat insulating panel, the engaging portion of the concave frame member is detachably engaged with the engaged portion of the convex frame member.

  Further, the connection structure of the heat insulation panel according to the invention of claim 2 is a heat insulation in which a space surrounded by the pair of surface materials and the convex frame material and / or the concave frame material provided at the end thereof is filled with the heat insulation material. The panel includes a plurality of engaging portions that are formed to protrude from the convex portion of the convex frame material, and a plurality of engaged portions that are formed on the inner surface of the concave portion of the concave frame material, and the convex portions of the convex frame material are adjacent to each other. When inserted into the concave portion of the concave frame member of the panel, each engaging portion of the convex frame member is detachably engaged with each engaged portion of the concave frame member.

  In the connection structure of the heat insulation panel of the invention of claim 3, in the above, when the convex portion has a tapered shape, the concave portion has a shape expanding in the inlet direction, and the convex portion is inserted into the concave portion. The distance between the two is characterized in that the base side is gradually larger than the tip side of the convex part.

  According to a fourth aspect of the present invention, there is provided the heat insulating panel connection structure according to any one of the above inventions, wherein a plurality of convex portions and concave portions are respectively formed on the convex frame material and the concave frame material.

  Moreover, the connection structure of the heat insulation panel of the invention of claim 5 is characterized in that, in each of the above inventions, the convex frame material or the concave frame material is formed with a packing located on the inner side slightly from the end. .

  The invention according to claim 1 includes a hook-shaped engaging portion that protrudes into the concave portion of the concave frame member of the heat insulating panel, and an engaged portion that is concavely formed in the convex portion of the convex frame member. When the convex portion of the material is inserted into the concave portion of the concave frame material of the adjacent heat insulating panel, the engaging portion of the concave frame material is detachably engaged with the engaged portion of the convex frame material. Therefore, the adjacent heat insulating panels can be firmly connected to each other by the engagement between the engaging portion and the engaged portion in addition to the protrusion entering the recess. Thus, for example, it is possible to obtain a strong connection without performing caulking work between frame members as in the past, or using a mechanical structure such as a rotary lock to connect the heat insulation panel. The cost of the heat insulation panel can be reduced by significantly reducing the number of construction and assembly steps.

  Further, the invention of claim 2 includes a plurality of engaging portions that are formed to protrude from the convex portion of the convex frame member of the heat insulating panel, and a plurality of engaged portions that are formed on the inner surface of the concave portion of the concave frame member. When the convex part of the frame material is inserted into the concave part of the concave frame material of the adjacent heat insulating panel, each engaging part of the convex frame material is engaged with each engaged part of the concave frame material so as to be detachable. Thus, the adjacent heat insulating panels can be firmly connected to each other by the engagement of the plurality of engaging portions and the engaged portion when the convex portion enters the concave portion. As a result, it is possible to obtain a strong connection without caulking work between the frame materials or using a mechanical structure such as a rotary lock to connect the heat insulation panel. As a result, the cost of the heat insulation panel can be reduced.

  In any of the above-described inventions, when the heat insulating panel is discarded, the engaging portion is deformed by its elasticity by strongly twisting in the direction of separating the heat insulating panels, so that the connected heat insulating panel is disassembled relatively easily. It will also be possible to do.

  Further, in the invention of claim 3, in addition to the above, the convex portion has a tapered shape, the concave portion has a shape expanding in the inlet direction, and the interval between the two when the convex portion is inserted into the concave portion is Since the base side is gradually larger than the tip side of the convex part, when inserting the convex part of the convex frame material into the concave part of the concave frame material, the engaged part and the engaging part are The plurality of engaged portions and the engaging portions are engaged with each other at the stage where the insertion is completed with almost no meshing. Thereby, the workability | operativity at the time of inserting and connecting the convex frame material of a heat insulation panel in the concave frame material of an adjacent heat insulation panel can be improved significantly.

  Further, in the invention of claim 4, in addition to the above-mentioned inventions, a plurality of convex portions and concave portions are formed in the convex frame material and the concave frame material, respectively, so that the connection strength between the convex frame material and the concave frame material is further improved. It becomes possible. Thereby, it becomes very suitable for the prefabricated freezer and the freezer warehouse especially used in a freezing area.

  Further, in the invention of claim 5, since the packing is formed on the inner side of the end of the convex frame member or the concave frame member, a wet caulking agent is added to the gap between the heat insulating panel and the heat insulating panel as in the prior art. Even if it is not used and sealed, suitable heat insulation and airtightness can be secured.

  In particular, since the packing is provided on the inner side of the end of the convex frame member or the concave frame member with the heat insulation panel connected, it is possible to seal the outer side of the packing with a wet caulking agent. . Thereby, when it is necessary to further improve the sealing performance between the heat insulating panels, such as when used in a clean room, wet coking can be performed between both frame members outside the packing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view of a prefabricated refrigerator 1 according to one embodiment to which the present invention is applied (the same applies to the prefabricated freezer 1A), and FIG. 2 is a plan view of the prefabricated refrigerator 1 to which a heat insulating panel connection structure according to one embodiment of the present invention is applied. A sectional view (schematic diagram) and FIG. 3 are respectively a partially enlarged plan sectional view (schematic diagram) of a prefabricated freezer 1A to which the heat insulating panel connection structure of one embodiment of the present invention is applied.

  That is, as shown in FIG. 1, the prefabricated refrigerator 1 has a plurality of heat insulation panels 12 (prefab panel) erected around the periphery, a ceiling panel (heat insulation panel) 3 provided on the ceiling, and a bottom portion. It comprises a floor panel (heat insulation panel) 4, a storage box frame 5 provided in the front opening, a door 6 (heat insulation panel made of heat insulation panel) pivotally supported by the storage box frame 5 and the like. Yes.

  The door 6 is composed of a heat insulating panel formed in a rectangular shape, and is used in common with various prefabricated refrigerators such as refrigerators and refrigerators, and is formed with a predetermined outer dimension. Yes. On one side (right side in the figure) of the door 6, a hinge member (not shown) for pivotally supporting the warehouse frame 5 is attached, and on the front side of the door 6 (left side). Is provided with a latch member 9 for opening and closing the door 6. In addition, 10 is a base frame, the floor panel 4 is mounted on this, and each heat insulation panel 12 is standingly arranged by the circumference | surroundings.

  As shown in FIG. 2, the heat insulation panel 12 of the prefabricated refrigerator 1 is connected so that one end face of each heat insulation panel 12 and the other end face of the heat insulation panel 12 adjacent to each other are in contact with each other, and stored inside thereof. A chamber (inside) 2 is formed. Specifically, as shown in FIG. 3, each heat insulating panel 12 has a protruding frame member 20 provided at an end thereof and a concave frame member 30 provided at an end portion of another adjacent heat insulating panel 12. Are connected to each other. 2 and 3, in order to explain the heat insulation panel 12, the heat insulation panel 12 is shown to be thicker than it actually is (hereinafter, the heat insulation panel is also shown to be thicker than it actually is in each figure). Moreover, FIG. 2 has shown the heat insulation panel 12 for refrigeration which comprises the prefabricated refrigerator 1, and FIG. 3 has each shown the heat insulation panel 12 for freezing which comprises the prefabricated freezer 1A.

  As shown in FIG. 4, the heat insulation panel 12 for refrigeration includes a pair of surface materials 14 and 14 arranged at a predetermined interval, and, for example, one side end portion of the surface materials 14 and 14 (on the right side in the drawing). It is comprised from the convex frame material 20 provided in the left side of the heat insulation panel 12, and the concave frame material 30 provided in the other side edge part (right side of the heat insulation panel 12 of the left side in the figure). The surface material 14 is composed of an aluminum plate or a synthetic resin plate, and the convex frame material 20 and the concave frame material 30 are composed of a hard resin having elasticity.

  The heat insulating panel 12 is provided with a convex frame member 20 at one end of a pair of surface members 14 and 14 provided at a predetermined interval, and a concave frame member 30 at the other end. The space 16 surrounded by the surface materials 14 and 14 and the convex frame material 20 and the concave frame material 30 is configured by foaming and filling a polyurethane heat insulating material 18. As shown in FIGS. 2 and 3, the positions of the convex frame member 20 and the concave frame member 30 differ depending on the position where the heat insulating panel 12 is attached. Moreover, depending on the heat insulation panel 12, the convex frame material 20 may be attached to both ends, or the concave frame materials 30 and 30 may be attached to both ends, respectively. When connecting the heat insulating panel 12 thus configured and the heat insulating panel 12 adjacent thereto, the convex frame member 20 of the other heat insulating panel 12 is inserted into the concave frame member 30 of one heat insulating panel 12. To be connected. The connection between the heat insulation panel 12 and the heat insulation panel 12 will be described in detail later. 4 shows two heat insulating panels 12 and 12 on the left and right, the right heat insulating panel 12 shows only the convex frame material 20 portion, and the left heat insulating panel 12 shows only the concave frame material 30 portion. Yes.

  As shown in FIGS. 5 and 6, fitting portions 22 and 32 that engage with inward flanges on the edge of the surface material 14 are provided at the ends of the convex frame member 20 and the concave frame member 30. The frame member 20 and the concave frame member 30 are fixed by engaging the fitting portions 22 and 32 with the edge portions of the pair of surface members 14 and 14. That is, the surface materials 14 and 14 of the heat insulation panel 12 are connected by the convex frame material 20 and the concave frame material 30, and in that state, the heat insulation material 16 is filled and integrated.

  The concave frame material 30 is formed with a concave portion 34 over the entire width of the end portion of the heat insulating panel 12. The concave portion 34 is recessed by a predetermined dimension in the direction of the convex frame material 20 at the one side end (left direction in the figure). In addition, it is formed so as to become narrower in the direction of the convex frame member 20 (backward). The recess 34 is formed to have a predetermined width and a predetermined depth, and an entrance is opened, and a bottom 35 is formed on the convex frame member 20 side (back side) (FIG. 5).

  An engaging portion 36 is formed in the concave portion 34 of the concave frame member 30 over the longitudinal direction of the concave frame member 30. The engaging portion 36 is erected substantially at the center of the bottom 35 of the concave portion 34 and protrudes by a predetermined dimension (a dimension that does not reach the opening) in the opening direction of the concave portion 34. Engagement pieces 37 are provided on both sides of the front end of the engagement portion 36 so as to expand toward the bottom 35. In other words, the engaging portion 36 has, for example, a saddle shape having a function of preventing detachment such as burrs provided at the tip of a fishing hook, and the engaging portion 36 is covered with a convex frame member 20 described later. When engaged with the engaging portion 26, the engaging pieces 37 on both sides of the distal end are engaged with the engaged portion 26, and even when stress is applied to the engaging portion 36, the engaged portion 26 is engaged with the engaging portion. The configuration is such that 36 does not easily come off.

  On the other hand, a convex portion 24 is formed on the convex frame member 20 over the entire width of the end portion of the heat insulating panel 12, and this convex portion 24 is separated from the concave frame member 30 at the other end as shown in FIG. It is formed in a tapered shape that protrudes by a predetermined dimension in the direction (left direction in the figure) and becomes narrower toward the tip. The convex portion 24 is formed to have a predetermined width and a predetermined height over the longitudinal direction of the convex frame member 20, and is configured to be insertable and engageable in the concave portion 34 of the concave frame member 30. . That is, the outer surface of the convex portion 24 and the inner surface of the concave portion 34 are configured to substantially coincide with each other.

  At the front end portion of the convex frame member 20, an engaged portion 26 that is recessed in a predetermined dimension on the fitting portion 22 side of the other end and extends in the longitudinal direction of the convex frame member 20 is formed. The engaging portion 26 is provided at the approximate center of the convex portion 24. The engaged portion 26 is formed in a substantially V-shaped cross section by opening the tip end side of the convex portion 24. Further, the engaged portion 26 is provided with engaged pieces 27 at both ends of the opening, and the engaged pieces 27 extend by a predetermined dimension in a direction close to each other.

  And when the convex part 24 of the convex frame material 20 is inserted in the recessed part 34 provided in the concave frame material 30 of the adjacent heat insulation panel 12, the concave frame material 30 of the engaged part 26 of the convex frame material 20 is inserted. The engaging part 36 is engaged so that it can be engaged and disengaged. In this case, the dimension between the two engaged pieces 27 and 27 of the engaged part 26 is slightly smaller than the dimension between the outer ends of both the engaging pieces 37 and 37 of the engaging part 36. Then, with the engaging portion 36 engaged in the engaged portion 26 (shown in FIG. 4), the engaging piece 37 of the engaging portion 36 is engaged with the engaged piece 27 of the engaged portion 26. In this state, the convex frame member 20 is not easily removed from the concave frame member 30.

  However, since the convex frame member 20 and the concave frame member 30 are made of a hard resin having elasticity, if the convex frame member 20 and the concave frame member 30 are forcibly separated, the convex frame member 20 and the concave frame member 30 protrude from the concave frame member 30. The frame member 20 can be separated. That is, when the heat insulation panel 12 is discarded, if the two insulation pieces 37 on both sides of the engagement portion 36 are warped if they are strongly twisted in the direction in which the adjacent heat insulation panels 12 are separated from each other, compared with the case where an adhesive or caulking is used. And can be easily dismantled.

  In addition, soft packings 29 are provided on both sides of the outer surface of the convex frame member 20 (the surface in the direction in which the convex portion 24 protrudes). The packings 29 and 29 are formed integrally by double extrusion molding or the like over the entire width of the convex frame member 20 in the longitudinal direction. In this case, the packing 29 is formed on the inner side of both sides of the convex frame member 20 (on the side of the convex portion 24 with a predetermined dimension from both surface materials 14 and 14). The packing 29 is provided on the outer surfaces of the fitting portions 22 and is curved in an arc shape.

  In the packing 29, the base portion of the outer end is located inside a predetermined dimension from the outer surfaces of the two surface materials 14, 14, and once separated from the convex frame member 20, the convex portion 24 is curved in an arc shape in the approaching direction. The distal end is separated from the convex frame member 20.

  And the heat insulation panel 12 is the state in which the convex frame material 20 was inserted in the concave frame material 30, and the engagement piece 37 of the engagement part 36 was engaged with the engagement piece 27 of the engagement part 26. The apex of the packing 29 formed in an arc shape comes into contact with the fitting portion 32 of the concave frame member 30. At this time, the packing 29 is elastically deformed, and the apex of the packing 29 comes into contact with the fitting portion 32 with a predetermined pressure, thereby sealing the gap between the convex frame member 20 and the concave frame member 30. Thereby, heat insulation and airtightness are ensured in a suitable state.

  Next, FIG. 7 shows a heat insulation panel 12A for the prefabricated freezer 1A, which is thicker than the heat insulation panel 12 for refrigeration. The heat insulating panel 12A has substantially the same configuration as the above-described embodiment. Hereinafter, different parts will be described. The same parts as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The convex frame member 20 provided at one side edge of the heat insulating panel 12A is provided with two convex portions 24 similar to the heat insulating panel 12 for refrigeration at a predetermined interval, and provided at the other side edge. The recessed frame member 30 is also provided with two recessed portions 34 similar to the refrigerated heat insulating panel 12. The two convex portions 24 provided on the convex frame member 20 and the concave portions 34 provided on the concave frame member 30 are in a state in which the convex frame member 20 and the concave frame member 30 of each heat insulating panel 12A face each other. Are provided at positions facing each other. When the convex portion 24 of the convex frame member 20 is inserted into the concave portion 34 provided in the concave frame member 30 of the adjacent heat insulating panel 12A, the engaging portion 36 of the concave frame member 30 is covered with the convex frame member 20. The engaging portion 26 is configured to be detachably engageable. The convex portion 24 and the concave portion 34 are not limited to two locations, and may be provided at three locations, four locations, or more.

  In this manner, the plurality of convex portions 24 are formed on the convex frame member 20 of the heat insulating panel 12A, the plurality of concave portions 34 are formed also on the concave frame member 30, and the engaging portion 26 in each concave portion 34 is connected to each convex portion 24. By engaging with the engaged portion 26, the required connection strength and heat insulation performance can be obtained even for the heat insulation panel 1A for the prefabricated freezer 1A having a large thickness. Become. Similarly, dismantling at the time of disposal is ensured.

  As described above, the connection structure of the heat insulation panel 12 according to the present invention is formed by recessing the hook-shaped engagement portion 36 that is projected and formed in the concave portion 34 of the concave frame member 30 and the convex portion 24 of the convex frame member 20. The engaged portion 26 is provided. When the convex portion 24 of the convex frame member 20 is inserted into the concave portion 34 provided in the concave frame member 30 of the adjacent heat insulating panel 12, the engaging portion 36 of the concave frame member 30 is covered with the convex frame member 20. Since the engaging portion 26 is detachably engaged with the engaging portion 26, the engagement between the engaging portion 36 and the engaged portion 26 in addition to the protrusion 24 entering the recessed portion 34 causes the adjacent heat insulating panel 12 ( The same applies to 12A. The same applies hereinafter.) The two can be firmly connected to each other.

  This makes it possible to obtain the required connection strength without using a rotary lock or the like for connecting the heat insulating panel 12 as in the prior art. Therefore, it is possible to reduce the processing cost of the surface material 14, the convex frame material 20, the concave frame material 30, etc., the material cost of the rotary lock, the installation cost, etc., and the cost of the heat insulation panel 12 is greatly reduced. To be able to.

  Moreover, since the packing 29 is formed in the convex frame member 20 or the concave frame member 30 so as to be located slightly inside from the end portion, for example, in a conventional manner, the gap between the heat insulating panel 12 and the heat insulating panel 12 is wet. Even if it does not seal using this caulking agent, the suitable heat insulation and airtightness in the prefabricated refrigerator 1 can be ensured. Therefore, it is possible to reliably perform suitable heat insulation and airtightness in the prefabricated refrigerator 1 even without many years of experience and skill. Accordingly, the heat insulation panel 12 and the heat insulation panel 12 can be surely and for a short time without using advanced caulking construction skills and caulking construction / curing for sealing the gap between the heat insulation panels 12 and 12. Can be sealed.

  In particular, since the packing 29 is provided at a position that is slightly allowed to the inside of the surface material 14 in a state where the heat insulating panel 12 and the heat insulating panel 12 are connected, the packing 29 is formed in a recess surrounded by the adjacent surface materials 14 and 14 and the packing 29. It is also possible to perform wet coking. Thereby, when it is desired to improve the sealing performance of the packing 29 portion, the sealing performance can be further improved by performing this dent wet coking.

  Next, FIGS. 9 to 15 show the connection structure of the heat insulation panel 12 of another embodiment of the present invention. The same parts as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted. In the second embodiment, the engaged portion 26 provided on the convex frame member 20 and the engaging portion 36 provided on the concave frame member 30 in the first embodiment are not provided.

  The heat insulation panel 12 for the prefabricated refrigerator 1 in this case is also connected in a state where the end portions of the heat insulation panels 12 are abutted with each other as shown in FIG. ing. Specifically, as shown in FIG. 10, the heat insulating panels 12 are connected to each other by abutment of the convex frame member 20 and the concave frame member 30 provided at the end portions. 9 shows a heat insulating panel 12 for the prefabricated refrigerator 1, and FIG. 10 shows a heat insulating panel 12A for the prefabricated freezer 1A. The heat insulating panel 12A has two convex portions 24 on the convex frame member 20 and a concave frame member 30. Two recesses 34 are provided. Moreover, in FIG. 9, FIG. 10, in order to demonstrate the heat insulation panel 12, the heat insulation panel 12 is shown thicker than actual.

  As shown in FIG. 11, the heat insulating panel 12 for the prefabricated refrigerator 1 has a plurality of engaging portions 28... Projecting from the outer surface of the convex portion 24 of the convex frame member 20 and the inner surface of the concave portion 34 of the concave frame member 30. Are formed with a plurality of engaged portions 38 (the same number or more than the engaging portions 28). As shown in FIG. 12, each engaged portion 38 is formed on each inner surface facing the opening from both sides of the bottom portion 35 of the recess 34, and has a saw blade shape in which one side of the opening side of the recess 34 is inclined obliquely. .

  On the other hand, as shown in FIG. 13, each engaging portion 28 is formed to protrude on both sides of the outer surface of the convex portion 24 and has a fin shape (three in the embodiment) with a predetermined thickness. The engaging portion 28 is provided at a predetermined interval from the vicinity of the tip of the convex portion 24 toward the fitting portion 22 and is formed integrally with the convex portion 24. Further, the engaging portion 28 has a shape in which the tip side is inclined toward the fitting portion 22 side at a predetermined angle with respect to the convex portion 24.

  The engaging portions 28 and the engaged portions 38 are formed at the same pitch, and each engaging portion 28 is configured to mesh with each engaged portion 38. In this way, by providing the plurality of engaging portions 28 on both sides of the outer surface of the convex portion 24, when the convex portion 24 enters the concave portion 34, each engaging portion 28 .. and each engaged portion 38. Because of the engagement, the number of engagement locations and the contact area increase, and the connection strength and airtightness between the convex portion 24 and the concave portion 34 can be increased. Further, since the plurality of engaging portions 28 provided on both sides of the outer surface of the convex portion 24 are inclined toward the fitting portion 22 at a predetermined angle, it is relatively easy to insert the convex portion 24 into the concave portion 34. Since the engaging part 28 falls to the convex part 24 side, insertion becomes easy. On the other hand, when the engagement portion 38 is engaged, the warping strength of the engagement portion 28 is increased, so that the protrusion 24 is not easily pulled out from the recess 34. Thereby, the adjacent heat insulation panels 12 and 12 can be connected firmly and easily.

  In the embodiment, a concave elastic portion 25 is provided at the tip of the convex portion 24. The elastic portion 25 makes it easier for the tip of the convex portion 24 to be deformed in a narrowing direction and is difficult to deform in an expanding direction, so that the operation of inserting the convex portion 24 into the concave portion 34 is further facilitated.

  Next, FIG. 14 shows a heat insulating panel 12A for the prefabricated freezer 1A that is thicker than the heat insulating panel 12. The same parts as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The convex frame member 20 of the heat insulating panel 12A is provided with two convex portions 24 similar to the heat insulating panel 12 with a predetermined interval, and the concave frame member 30 is also provided with a concave portion 34 similar to the heat insulating panel 12 at a predetermined interval. There are two places. The two convex portions 24 provided on the convex frame member 20 and the concave portions 34 provided on the concave frame member 30 are in a state in which the convex frame member 20 and the concave frame member 30 of each heat insulating panel 12A face each other. , Respectively, are provided at opposing positions. And when the convex part 24 of the convex frame material 20 is inserted in the recessed part 34 provided in the concave frame material 30 of 12 A of adjacent heat insulation panels, the convex frame material 20 of the to-be-engaged part 38 of the concave frame material 30 is inserted. It is comprised so that the engaging part 28 can be engaged and disengaged. The convex portion 24 and the concave portion 34 are not limited to two locations, and may be provided at three locations, four locations, or more.

  As described above, a plurality of protrusions 24 are formed on the convex frame member 20 of the heat insulating panel 12 </ b> A, and a plurality of recessed portions 34 are formed on the concave frame member 30. Even if it is the heat insulation panel 1A for prefabricated freezer 1A with a large thickness dimension, the required connection strength and heat insulation performance are obtained by engaging the plurality of engaging portions 28 of each convex portion 24 in a releasable manner. Be able to get. Similarly, dismantling at the time of disposal is ensured.

  As described above, the heat insulating panel 12 (the same applies to the heat insulating panel 12 </ b> A) is formed on the inner surface of the concave portion 34 of the concave frame material 30 and the plurality of engaging portions 28 that protrude from the convex portion 24 of the convex frame material 20. And an engaged portion 38. When the convex portion 24 of the convex frame member 20 is inserted into the concave portion 34 of the concave frame member 30 of the adjacent heat insulating panel 12, each engagement portion 28 of the convex frame member 20 is connected to each cover of the concave frame member 30. Since the engaging portions 38 are detachably engaged with each other, the convex frame member 20 (the convex portion 24) is simply inserted into the concave frame member 30 (in the concave portion 34) without many years of experience or skill. Adjacent heat insulation panels 12 can be firmly connected. Accordingly, it is possible to ensure suitable heat insulation and airtightness in the prefabricated refrigerator 1. As a result, a high degree of caulking construction skill and caulking construction / curing are not required for sealing the gap between the heat insulation panel 12 and the heat insulation panel 12. Can be sealed.

  In particular, in this case as well, when the heat insulation panels 12 and 12A are discarded, if each of the heat insulation panels 12 is strongly squeezed in a direction away from each other, each engagement portion 28 is warped, so that it is easier to disassemble than when using an adhesive or caulking. Can be convenient.

  Next, FIG. 17 shows a connection structure of a heat insulating panel 12 of still another embodiment of the present invention. In addition, the heat insulation panel 12 in this case has a structure substantially the same as Example 2 mentioned above. Hereinafter, different parts will be described. The same parts as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted.

  In this case as well, the convex part 24 of the convex frame member 20 is formed in a tapered shape and the concave part 34 is formed in a shape expanding in the inlet direction, but is further convex in the concave part 34. The distance between the two when the part 24 is inserted is configured so that the base side gradually becomes larger than the tip side of the convex part 24.

  That is, the inner surface of the concave portion 34 (both inner surfaces facing the opening from both sides of the bottom portion 35 where the engaged portion 38 is formed) and the side surface of the convex portion 24 (both side surfaces facing the base portion from both sides of the tip where the engaging portion 28 is formed). The inclination angle of the inner surface of the concave portion 34 is set to be different from the inclination angle of the side surface of the convex portion 24 so that it is narrow on the tip side of the convex portion 24 and wide on the base side of the convex portion 24. In FIG. 17, lines parallel to the inner surface of the concave portion 34 and the side surface of the convex portion 24 are indicated by alternate long and short dashed lines, but the two alternate long and short dashed lines intersect. In addition, in the heat insulation panel 12 of Example 2, the inner surface of the recessed part 34 and the side surface of the convex part 24 were substantially parallel (FIG. 16 dashed-dotted line). In FIGS. 16 and 17, the engaged portion 38 and the engaging portion 28 are described so as to overlap each other, but in actuality, both are engaged.

  Thus, the inner surface of the concave portion 34 and the side surface of the convex portion 24 are inclined so that the tip side of the convex portion 24 is narrow and the base side of the convex portion 24 is wide. Thus, when the convex portion 24 of the convex frame member 20 is inserted into the concave portion 34 of the concave frame member 30, the engaged portion 38 and the engaging portion 28 are not engaged with each other at the initial stage of the insertion, and only the vicinity when the insertion is completed. Can be engaged with each other.

  As described above, when the convex portion 24 is inserted into the concave portion 34, the entire engagement is made only in the vicinity of the time when the insertion is completed, so the engagement distance when the convex frame material 20 is inserted into the concave frame material 30 is increased. Can be shortened. Thereby, the workability of inserting the convex frame member 20 into the concave frame member 30 can be greatly improved.

  In each embodiment, the packing 29 is provided on the convex frame member 20 (the fitting portion 22 of the convex frame member 20). However, the place where the packing 29 is provided is not limited to the convex frame member 20, but the opposite side of the convex frame member 20. Even if it provides in the concave frame material 30 (the fitting part 32 of the concave frame material 30), it does not interfere. Also in this case, the same effect as the packing 29 provided on the convex frame member 20 can be obtained.

  Moreover, the shape of the convex frame material 20 of the heat insulation panel 12 (12A) and the concave frame material 30 can be suitably changed in the range which does not deviate from the summary of this invention.

It is a disassembled perspective view of the prefabricated refrigerator (freezer) of the Example to which the connection structure of the heat insulation panel of this invention is applied. BRIEF DESCRIPTION OF THE DRAWINGS It is a plane sectional view of the prefabricated refrigerator of one Example to which the connection structure of the heat insulation panel of this invention is applied (Example 1). It is an expansion plane sectional view of the prefabricated freezer of one example to which the connection structure of the heat insulation panel of the present invention is applied (example 1). It is an expanded plane sectional view which shows the connection structure of the heat insulation panel for prefabricated refrigerators of one Example to which this invention is applied (Example 1). It is an expanded plane sectional view of the concave frame material part of the heat insulation panel of FIG. It is an expanded plane sectional view of the convex frame material part of the heat insulation panel of FIG. It is an expanded plane sectional view which shows the connection structure of the heat insulation panel for prefabricated freezers of one Example to which this invention is applied (Example 1). It is a perspective view which shows the connection state of the heat insulation panel of FIG. It is a plane sectional view of the prefabricated refrigerator of other examples to which the connection structure of the heat insulation panel of the present invention is applied (example 2). It is an expansion plane sectional view of the prefabricated freezer of other examples to which the connection structure of the heat insulation panel of the present invention is applied (example 2). It is an expanded plane sectional view which shows the connection structure of the heat insulation panel for prefabricated refrigerators of the other Example to which this invention is applied (Example 2). It is an expanded plane sectional view of the concave frame material part of the heat insulation panel of FIG. It is an expanded plane sectional view of the convex frame material part of the heat insulation panel of FIG. It is an expanded plane sectional view which shows the connection structure of the heat insulation panel for the prefabricated freezer of the other Example to which this invention is applied (Example 2). It is a perspective view which shows the connection state of the heat insulation panel of FIG. It is an enlarged view of the principal part which shows the connection structure of the heat insulation panel of FIG. It is an enlarged view of the principal part which shows the connection structure of the heat insulation panel of other Example of this invention (Example 3). It is a plane sectional view of the conventional heat insulation panel for refrigeration. It is a plane sectional view of the conventional heat insulation panel for freezing. It is a plane sectional view of another conventional heat insulation panel (for refrigeration). It is a plane sectional view of another conventional heat insulation panel (for freezing).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Prefabricated refrigerator 1A Prefabricated freezer 2 Storage chamber 12 (12A) Thermal insulation panel 14 Surface material 18 Thermal insulation material 20 Convex frame material 24 Convex part 26 Engagement part 28 Engagement part 29 Packing 30 Concave frame material 34 Concave part 35 Bottom part 36 Engagement Part 38 engaged part

Claims (5)

In a heat insulation panel formed by filling a space surrounded by a pair of surface materials and a convex frame material and / or a concave frame material provided at an end of the surface material,
A hook-shaped engaging portion that protrudes into the concave portion of the concave frame material, and an engaged portion that is concavely formed in the convex portion of the convex frame material, and the convex portions of the convex frame material are adjacent to each other. When inserted into the recess of the concave frame member of the heat insulation panel, the engagement portion of the concave frame member is detachably engaged with the engaged portion of the convex frame member. Panel connection structure. In a heat insulation panel formed by filling a space surrounded by a pair of surface materials and a convex frame material and / or a concave frame material provided at an end of the surface material,
A plurality of engaging portions projecting and formed on the convex portions of the convex frame material, and a plurality of engaged portions formed on the inner surface of the concave portion of the concave frame material, wherein the convex portions of the convex frame material are adjacent to each other. When inserted into the concave portion of the concave frame member of the panel, the engaging portions of the convex frame member are detachably engaged with the engaged portions of the concave frame member, respectively. Insulating panel connection structure.   The convex portion has a tapered shape, and the concave portion has a shape that expands in the inlet direction. When the convex portion is inserted into the concave portion, the distance between the convex portion is closer to the base side than the distal end side of the convex portion. The heat insulation panel connection structure according to claim 2, wherein the heat insulation panel connection structure is configured to gradually increase.   4. The heat insulating panel connection structure according to claim 1, wherein a plurality of the convex portions and the concave portions are formed on the convex frame member and the concave frame member, respectively.   The heat insulating panel connection structure according to any one of claims 1 to 4, wherein a packing is formed on the convex frame member or the concave frame member so as to be located slightly inside the end portion.

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