JP5156425B2 - Thermal insulation panel - Google Patents

Description

  The present invention relates to a heat insulating panel used for construction of a prefabricated refrigerator / freezer, a refrigerator / freezer warehouse, a low-temperature storage, a cold storage, a storage, a warm storage, a freezing / refrigerated vehicle, a clean room, and the like.

  Conventionally, prefabricated refrigerators / freezers have been focused on heat insulation and airtightness in the refrigerator, so the seal between the heat insulation panel and the heat insulation panel constituting the wall generally has heat insulation and airtightness. An excellent wet caulking agent was used. That is, the heat insulation panel for refrigeration is provided with a predetermined interval, a convex frame material is provided on one side edge of a pair of surface materials, and a concave frame material is provided on the other side edge. It was manufactured by filling a space surrounded by a material, a convex frame material, and a concave frame material with a heat insulating material such as polyurethane foam.

  And when mutually connecting a heat insulation panel, the convex frame material provided in the one side edge part of the other heat insulation panel in the concave frame material provided in the other side edge part of one adjacent heat insulation panel Is engaged. In addition, a wet caulking agent is applied between the adjacent heat insulating panels and the concave frame material and the convex frame material of the heat insulating panels to seal between the two heat insulating panels.

  Further, a heat insulating panel has been proposed in which 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 edges of each heat insulating panel. And, on the inner surface of the concave portion formed on the edge of one heat insulating panel, the heat insulating packing is bonded with an adhesive, and on both side edges in the longitudinal direction of the convex portion formed on the edge of the other heat insulating panel, A packing having a plurality of fin-like sliding contact pieces formed on the outer side was mounted. 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 The heat insulation and airtightness were connected well (for example, refer to Patent Document 1).

Another heat insulating panel is also proposed in which a space surrounded by a pair of surface materials whose edges are bent at right angles to each other and the male frame material and female frame material on both sides is filled with a heat insulating material. The male frame member of this heat insulating panel is provided with a pair of connecting legs having a locking claw at the tip, and the female frame member is provided with a bowl-shaped step portion in a fitting groove that engages with the locking claw. . 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

  Here, as the packing for sealing between the two kinds of heat insulation panels, there are the fin-like and tube-like ones (the cross-section is a closed circle) as described above. When connecting the heat insulating panels, the resistance is increased when the heat insulating panels are brought together, especially when the number increases. In particular, the tube-shaped thing is hard to be crushed and has become a problem when bringing the heat insulating panels together.

  Moreover, the connection of the heat insulation panel used as a floor conventionally and the heat insulation panels used as a surrounding wall was not connected with the screw, and there were many cases of only caulking. However, there is a risk that the caulking will deviate until it dries, and if it is fixed with screws (bolts), it will be hit from the back of the floor, resulting in poor workability and high costs. Further, in the case of the so-called lock type, although workability is improved, the cost is remarkably increased.

  The present invention has been made to solve the problems of the related art, and an object of the present invention is to reduce resistance due to packing when heat insulating panels are connected to each other.

  Another object of the present invention is to reduce the cost and improve the workability when fixing the heat insulation panel with screws.

That is, the heat insulating panel of the present invention includes a pair of surface materials and a concave frame material provided over the entire width of the end of the surface material and / or a convex frame material having a shape engageable with the concave frame material. The enclosed space is filled with a heat insulating material, and includes a packing formed on the convex frame material or the concave frame material, and this packing is an abbreviation in which the direction to be crushed when connected to another heat insulating panel is opened. It has a cross-sectional C shape , the convex frame material and the concave frame material each have at least two convex portions or concave portions, and the packing is formed on the outer side of each convex portion or concave portion. Auxiliary packing is formed inside each of the recesses, and a groove for packing is formed in the convex frame material or the concave frame material, which is positioned in the direction in which the auxiliary packing is bent when connected to another heat insulating panel. And

In the heat insulation panel of the invention of claim 2 , in the above, a guide is formed to project between each convex part or concave part of the convex frame material or concave frame material, and between each concave part or convex part, another thermal insulation panel is connected. A guide enters when connecting, and a guide groove for restricting movement of the guide is formed.

A heat insulation panel according to a third aspect of the present invention is formed so as to project at one side end in each of the above inventions, and has a flange for screwing to another heat insulation panel constituting the floor or ceiling, and at the other end. It is formed and provided with the escape part in which a flange is accommodated in the case of a connection with another heat insulation panel.

  According to the present invention, a space surrounded by a pair of surface materials and a concave frame material provided over the entire width of the end portion of the surface material and / or a convex frame material that can be engaged in the concave frame material. In the heat insulation panel, which is filled with a heat insulating material, it is provided with a packing formed on the convex frame material or the concave frame material, and this packing has a substantially cross-sectional C shape in which the direction to be crushed is open when connected to another heat insulating panel Therefore, when connecting to another heat insulating panel, the packing is easily crushed as compared with a tube-shaped packing having a circular cross section. As a result, the resistance when the heat insulating panels are brought together can be reduced as much as possible.

Further, the convex frame material and the concave frame material have at least two convex portions or concave portions, respectively, and the packing is formed on the outer side of each convex portion or concave portion, and an auxiliary is provided on the inner side of each convex portion or concave portion. Since the packing is formed, the connecting portions of the heat insulating panels are sealed by a total of four packings, and the sealing performance is improved particularly when the heat insulating panel is used in a low temperature region such as refrigeration.

  In this case, since the groove for packing located in the direction in which the auxiliary packing bends is formed in the convex frame material or the concave frame material when connecting to another heat insulating panel, the thickness of the auxiliary packing and the other heat insulating panel Auxiliary packings other than the parts that are in close contact with each other can escape through the groove for packing, and this also reduces the resistance when the heat insulating panels are drawn together. And by these structures, although many packings are formed, the resistance at the time of bringing heat-insulating panels together can be remarkably reduced.

According to the invention of claim 2 , in addition to the above, the guide is formed to project between the convex portions or the concave portions of the convex frame material or the concave frame material, and other heat insulation is provided between the concave portions or the convex portions. A guide enters when connecting to the panel, and a guide groove that restricts the movement of the guide is formed, so when connecting insulation panels, the guide enters the guide groove of another insulation panel. Since the movement of the guide is restricted at this stage, it is possible to prevent or suppress the displacement of both heat insulating panels, and the workability is remarkably improved.

Furthermore, according to the invention of claim 3 , in addition to the above-mentioned inventions, a flange is formed so as to protrude at one side end portion and is screwed to another heat insulating panel constituting the floor or ceiling. Therefore, it becomes possible to screw the heat insulation panel serving as the wall to the other heat insulation panel serving as the floor or the ceiling using this flange. In particular, the floor can be screwed from above, and the workability is remarkably improved. In this case, the other side end is formed with a relief part that accommodates the flange when connecting to another heat insulation panel, so it is possible to hide the flange and fixing screws, and safety and appearance Can be improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a prefabricated refrigerator 1 of the embodiment to which the heat insulating panel 12 of the present invention is applied (the same applies to the prefabricated freezer 1A), and FIG. 2 is a heat insulating panel for the prefabricated refrigerator 1 of the embodiment to which the present invention is applied. 12 shows enlarged plan sectional views showing twelve connection structures.

  That is, the prefabricated refrigerator 1 includes a plurality of heat insulation panels 12 (prefab panel) erected so as to constitute a surrounding wall as shown in FIG. 1, and a ceiling panel (heat insulation panel) 3 provided on the ceiling. The floor panel (heat insulation panel) 4 provided at the bottom, the storage box frame 5 provided in the front opening, and the door 6 pivotally supported by the storage frame 5 (heat insulation door made of heat insulation panel) ) Etc.

  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. Reference numeral 10 denotes a base frame, on which a floor panel 4 is placed, and a vertically long and substantially rectangular heat insulating panel 12 is erected around it to constitute a wall.

  The heat insulation panel 12 of the prefabricated refrigerator 1 is connected via a connection member 40 described later in a state where one side end face of each heat insulation panel 12 and the other side end face of the heat insulation panel 12 adjacent thereto are abutted with each other. A storage chamber (inside the chamber) (not shown) is formed inside. As shown in FIG. 2, the heat insulation panel 12 for refrigeration includes a pair of surface materials 14 and 14 arranged at a predetermined interval, and one end portion of the surface materials 14 and 14 (the heat insulation on the left side in the drawing). A convex frame member 20 extending in the longitudinal direction of the right side edge of the panel 12 and a concave frame provided in the longitudinal direction of the other side end (the left side edge of the right heat insulating panel 12 in the figure). The material 30 is comprised. 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 a predetermined elasticity. The frame member 30 is provided over the entire end portion of the heat insulating panel 12 (surface member 14).

  The heat insulation 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 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 FIG. 1, the convex frame member 20 and the concave frame member 30 are provided at positions corresponding to each other depending on the position where the heat insulating panel 12 is attached (in FIG. 1, the convex frame member 20 and the concave frame member are provided). 30 is not shown). 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 the one heat insulating panel 12. Then, they are connected by engaging them. The connection between the heat insulation panel 12 and the heat insulation panel 12 will be described in detail later. Further, in FIG. 2, two heat insulation panels 12 and 12 are illustrated on the left and right, and the left heat insulation panel 12 illustrates only the convex frame material 20 portion (the opposite concave frame material 30 is not illustrated). The right heat insulation panel 12 shows only the concave frame member 30 (the opposite convex frame member 20 is not shown).

  A fitting portion 22 that engages with an inward flange formed on the edge portion of the surface material 14 is provided at the end portion of the convex frame material 20, and the edge portion of the surface material 14 is provided at the end portion of the concave frame material 30. The fitting part 32 engaged with the inward flange formed in the part is provided. The convex frame member 20 and the concave frame member 30 are fixed by fitting the fitting portions 22 and 32 to the edges 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 the space 16 surrounded by them is filled with the heat insulation material 18 and integrated.

  As shown in FIG. 3, 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 the convex portion 24 is a concave frame member at the other end portion of the heat insulating panel 12. It is formed in a shape that protrudes by a predetermined dimension in a direction away from 30 (left direction in the figure) and becomes narrower toward the tip. The convex portion 24 is formed over the entire longitudinal direction of the convex frame member 20 with a predetermined width and predetermined height, and is formed into a shape that can be inserted into the concave portion 34 of the concave frame member 30.

  A convex side engaged portion 26 is formed at the tip of the convex portion 24 of the convex frame member 20. The convex-side engaged portion 26 is opened at the tip and provided with engaged pieces 28 and 28 at both ends. The convex-side engaged portion 26 extends over the entire longitudinal direction of the convex frame member 20. Is provided. Both the engagement pieces 28, 28 of the convex-side engaged portion 26 extend by a predetermined dimension in a direction close to each other, the tip is folded by a predetermined dimension toward the heat insulating material 18 side, and the convex side The engaged portion 26 is configured such that an inner engagement portion 42 of a connecting member 40 described later can be engaged and disengaged.

  Further, the convex frame member 20 is provided with a reinforcing wall 25 for preventing the convex-side engaged portion 26 (both engaged pieces 28) from being deformed and opening each other. The reinforcing wall 25 connects both sides of the opened convex frame member 20 and is provided over the entire longitudinal direction of the convex frame member 20. The reinforcing wall 25 is not in contact with the inner engagement portion 42 at a position separated from the both engagement pieces 28 by a predetermined distance, that is, in a state where the connection member 40 is engaged with the convex-side engaged portion 26. In the position.

  Further, in the recessed frame member 30 provided in the heat insulating panel 12, a concave portion 34 is formed over the entire width of the end portion of the heat insulating panel 12 like the convex frame member 20, and the concave portion 34 is formed in the longitudinal direction of the concave frame member 30. It is formed from one end to the other end. A plurality of recessed side engaged portions 36 are formed on the inner surface of the recessed portion 34 so as to detachably engage an outer engaging portion 44 formed on the outer surface of the connecting member 40 described later. The recessed portion engaged portion 36 is formed on both side surfaces of the recessed portion 34, and is inclined obliquely from the bottom surface of the recessed portion 34 toward the opening, and the opening side surface is formed in parallel with the fitting portion 32. It has a saw blade shape (not shown).

  On the other hand, the connecting member 40 has a width dimension (dimension that covers the convex part 24 and can enter the concave part 34) smaller than the dimension in the width direction of the convex frame member 20 and the concave frame member 30; It has a thickness dimension that can be interposed between the convex portion 24 and the concave portion 34. The connecting member 40 is also made of an elastic hard resin, and is formed with a recess 46 that opens to one side (left side in FIG. 3) and can accommodate the convex portion 24 of the convex frame member 20. . The recess 46 is formed to have a predetermined dimension in the other direction (left direction in FIG. 3) and to become narrower in the other direction (the back of the recess 46). The recess 46 is formed to have a predetermined width and a predetermined depth, and a bottom 48 is provided on the back side. An inner engagement portion 42 is erected integrally with the bottom portion 48 of the recess 46, and the inner engagement portion 42 is erected substantially at the center of the bottom portion 48 and extends in a predetermined dimension in the opening direction.

  Engagement pieces 38 that expand toward the bottom 48 of the recess 46 are provided on both sides of the distal end of the inner engagement part 42, and the inner engagement part 42 is provided with It has a shape. In other words, the inner engagement portion 42 has, for example, a hook shape having a slip-off preventing function like a burrow provided at the tip of a fishing hook, and the inner engagement portion 42 is a convex shape of the convex frame member 20. Even when the engagement pieces 38 on both ends of the front end are engaged with the convex-side engaged portion 26 and a predetermined stress is applied to the inner engaging portion 42 when engaged with the portion-side engaged portion 26, It is set as the structure by which the inner side engaging part 42 does not come off easily from the convex part side engaged part 26. FIG.

  A plurality (three in the embodiment) of outer engaging portions 44 are integrally formed on the outer surface of the recess 46 of the connecting member 40. Each outer engagement portion 44 is formed so as to protrude on both sides of the outer surface of the recess 46 and has a fin shape with a predetermined thickness. The outer engagement portions 44 are provided at predetermined intervals in the opening direction from the vicinity of the bottom 48 of the recess 46.

  In addition, the outer engaging portion 44 is configured such that the tip end side is inclined toward the opening side at a predetermined angle with respect to the bottom portion 48. Each outer engagement portion 44 and each recess-side engaged portion 36 are configured at the same pitch, and each outer engagement portion 44 is configured to mesh with each recess-side engaged portion 36. Yes. The connection member 40 has a length dimension extending in a predetermined dimension in the longitudinal direction of the convex frame member 20, and a plurality of connection members 40 are attached at predetermined intervals in the longitudinal direction of the convex frame member 20.

  That is, the connection member 40 (inner engagement portion 42) is relative to the longitudinal direction of the convex frame member 20 provided from one end to the other end of a predetermined peripheral side (vertical side and horizontal side) of the heat insulating panel 12. , It can be engaged at any position. Further, the connection member 40 (outer engagement portion 44) is in the longitudinal direction of the concave frame member 30 provided from one end to the other end of a predetermined peripheral side (vertical side and horizontal side) of the heat insulating panel 12. , It can be engaged at any position.

  As shown in FIG. 4, the connecting member 40 configured in this manner has the inner engagement portion 42 engaged with the convex-side engaged portion 26 provided on the convex portion 24 of the convex frame member 20. The convex frame member 20 is engaged and arranged at a predetermined position. The attachment of the connection member 40 will be described in detail later.

  On the other hand, soft packings 29 and 29 are provided on both sides of the outer surface of the convex frame member 20 (the surface on which the convex portion 24 protrudes). The packings 29, 29 are formed integrally with the convex frame member 20 by double extrusion molding or the like over the entire width in the longitudinal direction of the convex frame member 20, and on the inner side (both surface materials) from both ends of the convex frame member 20. 14 and 14 on the convex dimension 24 side). In other words, the packing 29 is formed in a substantially C-shaped cross section in which the direction of crushing when connecting the heat insulating panels 12, 12, in fact, the direction of the convex portion 24 is open, and provided on the outer surfaces of both fitting portions 22. ing. The packing 29 may be provided on the concave frame member 30 side (opposite position of the packing 29 provided on the outer surface of the convex frame member 20). Also in this case, the same effect as the packing 29 provided on the convex frame member 20 can be obtained.

  And when connecting the heat insulation panel 12 and the heat insulation panel 12 adjacent to it, in the state which the connection member 40 was engaged with the convex frame material 20 of the other heat insulation panel 12, the concave of one heat insulation panel 12 was carried out. The connecting member 40 engaged with the other heat insulating panel 12 is inserted into the frame member 30 as shown in FIG. Thereby, while the adjacent heat insulation panel 12 and the heat insulation panel 12 are connected, the curved surface of the packing 29 formed in the substantially C-shaped cross section is connected to the flange of the surface material 14 and the fitting portion 32 of the concave frame material 30. Abut (Fig. 2).

  The diameter of the C-shaped curved portion of the packing 29 is configured to be slightly larger than the width of the gap (joint) between the adjacent heat insulating panels 12. As a result, the apex of the curved portion of the packing 29 abuts on the fitting portion 32 of the adjacent heat insulating panel 12 and is elastically deformed by being pressed with a predetermined pressure, being crushed in the direction of the convex portion 24, and the convex frame material 20. The joint between the recessed frame members 30 is sealed. Therefore, the heat insulation and airtightness between the adjacent heat insulation panels 12 are ensured in a suitable state.

  In particular, since the packing 29 has a substantially cross-sectional C shape in which the direction to be crushed (the direction of the convex portion 24) is opened when connecting to another heat insulating panel 12, the packing 29 is connected to the other heat insulating panel 12. Is easily crushed as compared with the conventional tubular packing having a circular cross section. Thereby, it becomes possible to reduce the resistance when bringing the heat insulating panels 12 and 12 close together.

  Since the packing 29 is provided on the inner side of the end of the convex frame member 20 or the concave frame member 30 with the heat insulating panel 12 connected, the outer side of the packing 29 is sealed with a wet caulking agent. It is also possible. Thereby, it is effective when the sealing performance of the joint between adjacent heat insulation panels 12 must be further improved.

  In addition, since the plurality of outer engaging portions 44 are provided on both sides of the outer surface of the recess 46 of the connecting member 40, when the connecting member 40 enters the recessed portion 34 of the concave frame member 30, each outer engaging portion 44. .. and the respective recessed side engaged portions 36... Can be engaged. Thereby, since there are a plurality of engagement locations and the contact area can be increased, the connection strength between the connection member 40 and the recess 34 can be increased.

  Further, the plurality of outer engaging portions 44 provided on both sides of the outer surface of the recess 46 of the connection member 40 are inclined toward the opening side of the recess 46 at a predetermined angle. Thus, when the connecting member 40 is inserted into the concave portion 34 of the concave frame member 30, the outer engagement portion 44 can be tilted relatively easily toward the convex portion 24. The connecting member 40 can be easily inserted into Further, in a state where the outer engaging portion 44 is engaged with the recessed portion side engaged portion 36, the warping strength of the outer engaging portion 44 is increased, so that the connecting member 40 is not easily detached from the recessed portion 34. . Thereby, the adjacent heat insulation panels 12 and 12 can be connected firmly and easily.

  Further, the removal strength when the inner engagement portion 42 is engaged with the convex-side engaged portion 26 is made stronger than the removal strength when the outer engagement portion 44 is engaged in the recess 34. ing. In this case, since the convex frame member 20, the concave frame member 30, and the connecting member 40 are made of a hard resin having elasticity, if the convex frame member 20 and the concave frame member 30 are forcibly separated, the concave frame member 20 The connecting member 40 can be separated from the material 30. Thereby, when discarding the heat insulation panel 12, if both the engagement pieces 38 on both sides of the inner engagement portion 42 are warped if the joint portion between the adjacent heat insulation panels 12 is strongly twisted in the direction of separating, the adhesive or caulking The connected heat insulation panel 12 can be easily disassembled as compared with the case of using.

  If the connecting member 40 is forcibly separated from the convex frame member 20, the connecting member 40 can be separated from the convex frame member 20 and disassembled. Further, the pull-out strength when the inner engagement portion 42 is engaged with the convex-side engaged portion 26 is weaker than the pull-out strength when the outer engagement portion 44 is engaged in the concave portion 34. There is no problem. In this case, if the convex frame member 20 and the concave frame member 30 are forcibly separated from each other, the connecting member 40 can be separated from the convex frame member 20, and the heat insulating panel 12 connected in the same manner can be disassembled.

  Here, FIG. 2 shows a connection state between the heat insulation panels 12 and 12 constituting the surrounding wall, and FIG. 5 shows a connection state between the floor panel 4 and the heat insulation panel 12. In this case, the concave frame material 30 of the floor panel 4 is formed with the same concave portion 34 on the upper surface, and the convex portion 24 of the convex frame material 20 on the lower surface of the heat insulating panel 12 is inserted and engaged. The seal by the packing 29 and the connection effect by the connection member 40 are the same as described above.

  Next, FIG. 6 shows a heat insulating panel 12A of a prefabricated freezer 1A for freezing (shown in FIG. 1) thicker than the heat insulating 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 on one side edge of the heat insulating panel 12A has two protrusions (two locations) each provided with a connection member 40 in the same manner as the heat insulating panel 12 for refrigeration at a predetermined interval. (In FIG. 6, the connecting member 40 is attached only to the lower convex portion 24, but it is actually attached to the upper convex portion 24). Moreover, the recessed frame material 30 provided in the other side edge part of 12 A of heat insulation panels is provided with the two recessed parts (2 places) similar to the heat insulation panel 12 for refrigeration. 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.

  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 outer engaging part of the connection member 40 provided in the convex frame material 20 Similarly to the above, 44 is configured to be able to engage and disengage with the recessed portion engaged portion 36 of the recessed frame member 30. In addition, the convex part 24 and the recessed part 34 provided in the convex frame material 20 and the concave frame material 30 may provide not only two items but three items (three places), four items (four places), or more.

  As described above, the convex frame member 20 of the refrigeration heat insulation panel 12 </ b> A has a plurality of convex portions 24 and the concave frame member 30 also has a plurality of concave portions 34. And the comparatively thick dimension used for the prefabricated freezer 1A for freezing by engaging the connection member 40 provided in each convex frame material 20 with the recessed part side engaged part 36 in the recessed part 34 so that engagement / disengagement is possible. Even with a large thermal insulation panel 12A, the required connection strength and thermal insulation performance can be obtained.

  In addition, a guide 51 is formed so as to protrude substantially at the center between the convex portions 24, 24 of the convex frame member 20 of the heat insulating panel 12A. The guide 51 is a standing wall having a small thickness, protrudes from the convex frame member 20 with a predetermined dimension, and is formed over substantially the entire width of the convex frame member 20 in the longitudinal direction. On the other hand, a guide groove 52 is formed in a recess in the approximate center between the recesses 34 of the recessed frame member 30 of the heat insulating panel 12A. The guide groove 52 has a narrow cross-section having a substantially V shape and a predetermined depth.

  Further, auxiliary packings 53 and 53 are formed on the inner sides of the convex portions 24 and 24 of the convex frame member 20 (between the convex portions 24 and the guides 51). Each auxiliary packing 53 has a fin shape and protrudes while being inclined toward the convex portion 24 side. Furthermore, packing grooves 54 and 54 are respectively formed in the convex frame member 20 in a portion located in a direction in which each auxiliary packing 53 is bent when connecting to another heat insulating panel 12A.

  When connecting the heat insulating panels 12 </ b> A and 12 </ b> A, first, the guide 51 of the convex frame member 20 enters the guide groove 52 of the concave frame member 30. Since the guide groove 52 is formed to be narrow, movement of the guide 51 that has entered in the width direction (the width direction of the heat insulating panel 12A) is restricted. Thereby, when connecting the heat insulation panels 12A to each other, the movement of the guide 51 is restricted when the guide 51 enters the guide groove 52 of the other heat insulation panel 12A. Thus, the connection workability of the heat insulating panel 12A can be remarkably improved.

  Further, the auxiliary packings 53 and 53 are in close contact with the concave frame member 30 and sealed. Thereby, the connection part of heat insulation panels 12A and 12A will be sealed by a total of four packings 29, 29, 53, and 53. In the case of the heat insulation panel 12A used in the prefabricated freezer 1A as in the embodiment, The sealability is improved.

  In this case, the convex frame member 20 is formed with packing grooves 54 and 54 that are positioned in the direction in which the auxiliary packings 53 and 53 are bent when connected to the other heat insulating panel 12A. The auxiliary packing 53 other than the portion that is in close contact with the other heat insulating panel 12A can escape through the packing groove 54, and this also reduces the resistance when the heat insulating panels 12A and 12A are drawn together. These structures can remarkably reduce the resistance when the heat insulating panels 12A and 12A are brought close to each other despite a large number of packings.

  The guide 51, the auxiliary packing 53, and the packing groove 54 may be provided on the concave frame member 30 side, and the guide groove 52 may be provided on the convex frame member 20 side. In this case, the same effect as in the embodiment can be obtained. Moreover, FIG. 7 has shown the connection state of the floor panel 4A (for freezing) and the heat insulation panel 12A. In this case, the concave frame material 30 of the floor panel 4A is formed with concave portions 34 and 34 similar to those described above on the upper surface, and the convex portions 24 and 24 of the convex frame material 20 on the lower surface of the heat insulating panel 12A are inserted and engaged. It becomes. The seal by the packing 29 and the auxiliary packing 53, the regulation by the guide 51, and the connection effect by the connecting member 40 are the same as described above.

  Next, fixation of the floor panel 4 and the heat insulation panel 12 will be described with reference to FIGS. Corner pieces 56, 56 are attached to the heat insulation panel 12 at the upper and lower ends of the concave frame member 30 located on one side (the left side in FIG. 11) of the heat insulation panel 12 (same heat insulation panel 12 A) of this embodiment. A flange 57 projects from each corner piece 56, 56. The flange 57 is located on the longitudinal extension of the convex portion 24 of the convex frame member 20 positioned on the lower side and the upper side of the heat insulating panel 12, and the lower surface of the lower end flange 57 and the upper surface of the upper end flange 57 are It is in a position substantially flush with the tip of the connecting member 40 attached to the convex portion 24 of the upper and lower convex frame members 20.

  That is, the lower surface of the lower end flange 57 is at the height of the lower surface of the heat insulation panel 12, and the upper surface of the upper end flange 57 is at the height of the upper surface of the heat insulation panel 12. Further, a screw hole 58 is formed in the flange 57, and a fixing tapping screw (which may be a normal screw) 59 can be inserted into the screw hole 58.

  On the other hand, corner pieces 61 and 61 are attached to the heat insulation panel 12 at the upper and lower ends of the convex frame member 20 located on the other side of the heat insulation panel 12 (the same applies to the heat insulation panel 12A). In each corner piece 61, 61, an escape portion 62 is recessed.

  When the heat insulating panel 12 is connected to the floor panel 4, the convex portion 24 of the lower convex frame member 20 is inserted into and engaged with the concave portion 34 of the concave frame member 30 of the floor panel 4. At that time, since the flange 57 also enters the recess 34, the tapping screw 59 is inserted into the screw hole 58 from above and screwed into the periphery of the screw hole 58 and the bottom surface of the recess 34 of the recessed frame member 30 of the floor panel 4. Thus, the heat insulation panel 12 is fixed to the floor panel 4. Similarly, in the case of the ceiling panel 3, the flange 57 of the heat insulation panel 12 is attached to the ceiling panel 3 from below, and is fixed by screwing a tapping screw from above and screwing it around the screw hole 58 of the flange 57.

  When another heat insulating panel 12 is connected to the heat insulating panel 12, the flange 57 is accommodated in the escape portion 62 of the heat insulating panel 12, and the flange 57 and the tapping screw 59 are thereby hidden. As described above, since the flange 57 is formed to protrude at one end of the heat insulating panel 12, the heat insulating panel 12 serving as a wall can be screwed to the floor panel 4 or the ceiling panel 3 using the flange 57. become. In particular, the floor panel 12 can be screwed from above, and the workability is remarkably improved.

  In this case, since the escape portion 62 in which the flange 57 is accommodated when connecting to the other heat insulation panel 12 is formed at the other end portion of the heat insulation panel 12, the flange 57 and the fixing tapping screw 59 are provided. It becomes possible to hide, and it is possible to improve safety and appearance.

It is a disassembled perspective view of the prefabricated refrigerator (a prefabricated freezer is the same) of one example to which the present invention is applied. It is an expanded plane sectional view which shows the connection structure of the heat insulation panel for the prefabricated refrigerators of FIG. It is a decomposition | disassembly plane sectional view of the convex frame material and connection member of the heat insulation panel for prefabricated refrigerators of FIG. It is a plane sectional view explaining the connection operation of the heat insulation panel for prefabricated refrigerators of FIG. It is an expanded vertical side view which shows the connection structure of the heat insulation panel and floor panel for prefabricated refrigerators 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. It is an expanded vertical side view which shows the connection structure with the floor panel of the heat insulation panel for prefabricated freezers of FIG. It is a front view of the flange part of the heat insulation panel for prefabricated refrigerators of FIG. It is a see-through | perspective front view of the flange part of the heat insulation panel for prefabricated refrigerators of FIG. It is a see-through | perspective front view of the escape part part of the heat insulation panel for prefabricated refrigerators of FIG. It is a front view which shows the connection structure of the heat insulation panel for the prefabricated refrigerator of FIG. 1, a floor panel, and a ceiling panel.

DESCRIPTION OF SYMBOLS 1 Prefabricated refrigerator 1A Prefabricated freezer 12 (12A) Thermal insulation panel 14 Surface material 18 Thermal insulation material 20 Convex frame material 24 Convex part 29 Packing 30 Concave frame material 34 Concave part 40 Connection member 51 Guide 52 Guide groove 53 Auxiliary packing 54 Packing groove 56 61 Corner piece 57 Flange 58 Screw hole 59 Tapping screw 62 Relief

Claims (3)

A space surrounded by a pair of surface materials and a concave frame material provided over the entire width of the end portion of the surface material and / or a convex frame material having a shape engageable with the concave frame material is filled with a heat insulating material. Insulating panel consisting of
It is provided with a packing formed on the convex frame material or the concave frame material, and the packing has a substantially cross-sectional C shape in which a direction to be crushed when connected to another heat insulating panel is opened ,
The convex frame material and the concave frame material each have at least two convex portions or concave portions, and the packing is formed on the outside of each convex portion or concave portion, and
Auxiliary packing is formed inside each convex part or concave part, and a groove for packing located in a direction in which the auxiliary packing bends when the convex frame material or the concave frame material is connected to another heat insulating panel. A heat insulating panel characterized by being formed . A guide protrudes between each convex portion or concave portion of the convex frame material or concave frame material, and the guide enters between each concave portion or convex portion when connecting to another heat insulating panel. The heat insulation panel according to claim 1, wherein a guide groove for restricting movement of the guide is formed . A flange is formed to protrude at one side end and is screwed to another heat insulation panel constituting the floor or ceiling, and is formed at the other side end and is connected to the other heat insulation panel. The heat insulation panel according to claim 1, further comprising a relief portion in which the flange is accommodated .

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