JPH0144991B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a heat insulating panel constituting a prefabricated low-temperature refrigerator.

(b) Prior art The sanderch panel shown in Japanese Utility Model Application Publication No. 58-87095 consists of a surrounding frame, panels on both sides, and a foam insulation material filled between these panels. By fitting and fixing the fixing edge into the fixing groove formed in the surrounding frame, the fixing effect was improved.

(C) Problems to be Solved by the Invention In the above-mentioned conventional technology, the tongue piece extends downward as the fixed edge fits into the fixing groove, and as a result, a return force is generated in the tongue piece due to contraction. When moisture in the air enters the insulation material during storage of the panel after the foaming process is completed, the insulation material expands due to the moisture, and the temperature in the storage warehouse during summer, etc. When the temperature exceeds 80°C, secondary foaming of the insulation material occurs, causing deformation of the panel and resulting in defective products.

(d) Means for solving the problem In a heat insulating panel formed by injecting and foaming a foam heat insulating material into the space formed between the inner and outer plates, each peripheral edge is bent inward at a substantially right angle, and the above-mentioned Both the inner and outer plates are bent substantially at right angles to the spatial direction and have four corners cut out to form four-sided bent pieces, and an engaging portion that is parallel to each other on the inner surface and protrudes into the space, and the engaging portion. It consists of a band-shaped first to fourth frame members defining an engagement groove in which the two bent pieces are inserted and engaged; The length of the engaging portion of the third frame member is made shorter than the length of the engaging portion of the opposing second frame member, and the lower end of the engaging portion of the third frame member is engaged with the fourth frame member. A heat insulating panel comprising a frame body placed on or close to a frame body.

(e) Function: The peripheries of both the inner and outer plates of the heat insulation panel are covered with the first to fourth frame members that abut against the respective ends, thereby preventing moisture in the air from entering the foam insulation material, and The bent pieces of the plate are engaged with the engaging portions of the first to fourth frame members, and the peripheral edges of both the inner and outer plates are supported by the first to fourth frame members, and before foam filling of the foam insulation material, 1st
- In a box assembled from the fourth frame member and both the inner and outer plates, the third and fourth frame members mutually act as respective stoppers.

(F) Example Hereinafter, an example of the present invention will be described based on the drawings.

1 is a prefabricated low-temperature storage such as a prefabricated refrigerator, which is assembled by connecting and connecting multiple ceiling panels 2, side panels 3, insulation panels 4 serving as foundation side walls (anchor rails), etc., and openings at appropriate places in the side panels 3. A door 3A (not shown) that can be opened and closed is provided, and as shown in FIGS. 4 and 5, the lower end of the heat insulating panel 4 is fixed to the foundation concrete 5.
A floor insulation material 6 and floor concrete 6A are laid on this foundation concrete. Here, the heat insulating panel 4 includes both the inner and outer plates 7 and 8, a foamed heat insulating material 9 such as polyurethane foam injected and foamed into the space 7B between the inner and outer plates, and foamed heat insulating material 9, such as polyurethane foam, provided on each of the four surrounding sides. 1st to 4th frame members made by extrusion molding of hard vinyl chloride resin, etc.
0, 11, 12, 13, etc., and extends inwardly at the periphery of both the inner and outer plates 7, 8 by bending at a substantially right angle,
Furthermore, bent pieces 7A and 8A are formed on the four sides and extend at approximately right angles in the direction of the space 7B.
The bent pieces 7A, 8A located at both ends of the plates A, 8A, that is, the four corners of both the inner and outer plates 7, 8, are provided with the following first to fourth bent pieces 7A, 8A.
A notch 14 is formed to serve as an insertion opening for each of the fourth frame members.

Furthermore, an engaging portion is formed on the inner surface of each of the first to fourth frame members 10 to 13 to define engaging grooves 15A and 15A that protrude toward the space 7B and extend substantially parallel to the bent pieces 7A and 8A. 15, 15, and engagement grooves 15A, 1
The bent pieces 7A and 8A are inserted into the frame 5A, and the respective frame members are attached. In addition, a connecting groove 10A is formed between the engaging portions 15, 15 of the first frame member 10, and a plurality of connecting devices 16 are provided at appropriate locations, opening outward and having connectors 16A such as pins or hooks inside. It is attached using fixing devices 17, 17 such as rivets, and this connecting device is buried in the heat insulating material 9. Also, the first
At one end of the frame member 10, a connecting groove 10A and an abutting part 10B are formed by cutting out the engaging parts 15, 15 diagonally. Moreover, the engaging portion 15 of the second frame member 11,
Similar to the first frame member 10, there is a connecting groove 11 between the holes 15 and 15.
A, opening outward at a suitable location and connecting device 16
is attached and buried in the heat insulating material 9, and the second frame member 11
A connecting groove 11A and an engaging portion 15, 1 are provided at both ends of the
5 is cut diagonally to form abutting parts 11B, 11B, one abutting part is the abutting part 1 of the first frame member 10.
It is matched against 0B. Further, a connecting protrusion 12 is provided between the engaging portions 15 and 15 of the third frame member 12.
A connecting device 1 that forms a C and opens outward at a proper location.
6 is installed. Here, the engaging portions 15, 15
A flat surface with a depth L on which engaging portions 15, 15 are not formed in order to slide the third frame member 12 while avoiding the front end connecting groove 10A of the first frame member 10. 12A of the third frame member 12, and a flat portion 12B where the engaging portions 15, 15 are not formed in order to avoid the connecting groove 13A of the fourth frame member 13 is formed at the other end. 15, 15 are shorter than the engaging portions 15, 15 of the second frame member 11 facing each other. Further, the engaging portions 15, 15 of the fourth frame member 13
A connecting groove 13A is also formed in between, and the second frame member 11
On the side, the engaging parts 15, 15 and the groove 13A are cut out diagonally to form a contact part 13B, and this contact part 13
B is abutted against the other abutting portion 11B of the second frame member 11, and the other end of the fourth frame member 13 is abutted against the lower part of the third frame member 12. Also, the third
A gap of the depth L is formed between the upper ends of the engaging portions 15, 15 of the frame member 12 and the engaging portions 15, 15 of the first frame member 10 and the connecting groove 10A, and
The lower ends of the engaging portions 15, 15 of the third frame member 12 are connected to the fourth
Engagement parts 15, 15 of frame member 13 and connection groove 13
It is in contact with or in a close relationship with A. Further, the tip of the first frame member 10 on the third frame member side is connected to the third frame member 1
It is butted against the top of 3. Incidentally, on the outer surface of the third frame member 12, sealing soft resin gaskets 19, 19 are formed extending from the edges toward the center, as shown in FIG. Further, as shown in FIG. 1, sealing members 20, 20 of the heat insulating material 9 are provided on both the upper and lower parts of the connecting protrusion 18.

Note that the bent pieces 7A, 8A of both the inner and outer plates 7, 8 are engaged with the engaging parts 15, 15 of the first to fourth frame members 10 to 13, which form the mouth-shaped frame, and are slid to form foam. Before the foam filling of the foam insulation material 9, the panel is assembled and the panel is stocked until the foam filling of the foam insulation material 9. Here, the panel has first and second frame members 10 and 11 attached to the upper side and one side of both the inner and outer plates 7 and 8, respectively, and then a third frame member is attached to the other side of both the inner and outer plates 7 and 8. Attach the member 12, slide it upward by a depth L, insert the fourth frame member 13 from below the third frame member 12 and attach it to the lower sides of both the inner and outer plates 7, 8, and then place the third frame member 12 in a predetermined position. It is assembled by sliding it downward until the first
~The ends of each of the fourth frame members 10 to 13 are butted against each other. Therefore, by the engagement of the bent pieces 7A, 8A of both the inner and outer plates 7, 8 constituting the heat insulating panel with the engaging portions 15, 15 of the first to fourth frame members 10 to 13, both the inner and outer plates 7, 8 and the first to fourth frame members 10 to 13 in the longitudinal direction, expansion of the heat insulating material 9 in the thickness direction is prevented, and the generation of defective products can be prevented. Of course, the dimensional accuracy of the heat insulating panel 4 can be improved.
- When a panel filled with foam insulation material is assembled using the fourth frame members 10 to 13 and both the inner and outer plates 7 and 8, the flat parts 12A and 12B of the third frame member 12 are used to form the first and fourth frames. Connection groove 10 for members 10 and 13
A, 13A, and the engaging portions 15, 15 can escape, and the third frame member 12 and the fourth frame member 13 contact each other and become mutual stoppers, and the first, second, and fourth frame members The ends of the frame members 10, 11, and 13 come into contact with each other and act as mutual stoppers, which prevents the respective frame members from coming off and also prevents the frame from being distorted.The foam insulation material is foam-filled into the panel. The panels can be easily stored and transported up to the present time without impairing dimensional accuracy, and a heat insulating panel 4 with good dimensional accuracy can be provided.

(g) Effects of the Invention The present invention is a heat insulating panel configured as described above, in which both the inner and outer plates and the longitudinal direction of the first to fourth frame members are reduced by engagement with the first to fourth frame members. By improving mutual mechanical strength, expansion of the insulation panel in the thickness direction can be prevented and dimensional accuracy can be improved. When the panel is assembled by engaging the pieces, the engaging part of the third frame member is shorter than the engaging part of the opposing second frame member, and escapes the engaging part of the first and fourth frame members. The mounting accuracy of the frame body is improved, and the third frame member, the fourth frame member, and the first, second, and fourth frame members are
The frame members are abutted against each other and serve as mutual stoppers, which prevents each frame member from coming off and prevents dimensional errors from occurring in the frame.
The panel can be stored and transported without losing dimensional accuracy until the foam insulation material is foam-filled, and a heat insulation panel with good dimensional accuracy can be provided.

[Brief explanation of drawings]

Figures 1 to 10 show an embodiment of the present invention, with Figure 1 being a front view of a heat insulating panel, Figure 2 being a schematic perspective view of an assembled low temperature refrigerator, and Figure 3 connecting multiple heat insulating panels. The top view when connected, Figure 4 is an assembly state diagram of the prefabricated low temperature refrigerator, and Figure 5 is the G- in Figure 4.
G′ line vertical cross-sectional view, Figure 6 is a top view of the insulation panel,
7 is a longitudinal sectional view taken along the line F-F' in FIG. 1, FIG. 8 is an exploded perspective view of both the inner and outer plates and the first to fourth frame members, and FIG.
The figure is a perspective view of the first frame member, and FIG. 10 is a perspective view of the third frame member. 1... Assembly type low temperature refrigerator, 4... Heat insulation panel, 7, 8...
Both inner and outer plates, 7A, 8A...Bending piece, 9...Foam insulation material, 10-13...First to fourth frame members, 10A, 1
1A, 13A...Connection groove, 12C...Connection protrusion,
10B, 11B, 13B... Contact portion, 12A... Plane portion, 14... Notch portion, 15... Engagement portion, 15A... Engagement groove, 16... Connection device.

Claims (1)

[Claims] 1. In a heat insulating panel formed by injecting and foaming a foam heat insulating material into the space formed between the inner and outer plates, each peripheral edge is bent inward at a substantially right angle, and further bent at a substantially right angle in the direction of the space. Both the inner and outer plates each having a four-sided bent piece with four corners cut out, an engaging portion on the inner surface that is parallel to each other and protrudes into the space, and the two connecting portions defined by the engaging portion. The length of the engaging portion of the third frame member, which is arranged on one side of both the inner and outer plates, is composed of band-shaped first to fourth frame members in which engagement grooves are formed for inserting and engaging the pieces. A frame body in which the length of the engaging part of the third frame member is set to be shorter than the length of the engaging part of the opposing second frame member, and the lower end of the engaging part of the third frame member is placed on or close to the engaging part of the fourth frame member. A heat insulating panel characterized by comprising: