JPH087010B2 - Insulation panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial field of use The present invention fills a foamed heat insulating material between inner and outer plates arranged at a predetermined interval, and arranges a frame member on the periphery thereof. Regarding insulation panels.

2. Description of the Related Art In order to construct a prefabricated refrigerator or freezer, a plurality of heat-insulating panels are usually combined to form a box having a top wall, side walls, and a bottom wall. As disclosed in Japanese Patent No. 91779, a concave portion and a convex portion are formed in an end portion of a heat insulating panel having a certain size, for example, about one tatami mat, and the convex portion of one panel is fitted into the concave portion of the other panel. The panels are coupled with each other by a coupling device called a rotary lock arranged in the convex portion and the concave portion. Then, in order to form the convex portion and the concave portion, a frame member made of resin is arranged at the end portion of the panel.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned conventional technique, the heat insulating panel is constituted by both the inner and outer plates, the frame member and the foaming heat insulating material, but the inner and outer plates and the frame member are both plate end portions. Although the inner surface or the outer surface of the bent flange portion makes surface contact, the flange portion and the frame material form a space that is not filled with heat insulating material, so the heat insulating property of the end portion of the heat insulating panel is It was significantly worse than that.

Therefore, the present invention provides a heat insulating panel in which the inner surface of the flange portion is also filled with the heat insulating material.

[Structure of Invention]

Means for Solving the Problems The heat insulating panel of the present invention has an inner plate and an outer plate each having a flange portion that is rectangular in plan view and is bent into four sides to form a substantially L shape, and a flange of the inner plate. Has a first groove portion for locking the portion and a second groove portion for locking the flange portion of the outer plate, and a convex portion or a concave portion is formed between the both groove portions, and the coupling device is arranged inside thereof. A frame member and a foaming heat insulating material filled between the inner and outer plates in a state of being locked to the frame member, and both groove portions are
The base wall, the regulation wall, and the abutment wall are formed. The base wall and the abutment wall are opposed to each other so that the thickness of the abutment wall is smaller than that of the base wall and the abutment wall is inclined inward. The dovetail groove is formed by extending the outer end of the contact wall outward from the outer end of the wall.

Action By extending the outer end of the contact wall (19) outward from the outer end of the base wall (17), the outer end of the base wall (17) and the inner plate (3) or outer plate (4) To form a gap between the inner surface of
From this space, the heat insulating material reaches the inner surface of the flange. In addition, by making the contact wall (19) thin and inclining it inward, the contact between the flanges (10) (12) causes the contact wall (19) to exert an inward restoring force. Holds and acts to press the flange portion inward.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

(1) is an assembled low-temperature cabinet in which a plurality of heat-insulating panels (2) are connected and connected to each other to form a box-like structure.
The shape or the configuration varies depending on the positions where the side wall, the floor, etc. are arranged, but the shape is usually a square shape.

The heat insulating panel (2) is arranged symmetrically with a predetermined space between the inner plate (3) and the outer plate (4) and the inner plate (3) and the outer plate (4) at the peripheral ends thereof. A foaming heat insulating material (6) such as foamed polyurethane filled in the space formed by the frame material (5) provided, the inner plate (3), the outer plate (4) and the frame material (5). It consists of and.

The inner plate (3) and the outer plate (4) are plate members made of metal and having a rectangular shape in a plan view.
The flange portions (10) and (12) having a character shape are formed.

On the other hand, the frame material (5) serves as a connecting portion for connecting and connecting the panels, and the frame material is divided into one having a convex portion and one having a concave portion, and the convex portion is combined with the concave portion to be integrated. To do. Inside the convex portion and the concave portion, a coupling device called a rotary lock (this is a hook body (11A) having a hook and a pin body (1
(11B) that forms a pair with (1B), and this coupling device (11) rotates the hook of the hook body (11A) and hooks it on the pin of the pin body (11B) It is firmly locked, and the panels are firmly connected and fixed with a simple operation.

The frame member (5) is formed, for example, by extrusion molding a resin such as foamed vinyl chloride, and has a first groove portion (13) for engaging and locking the outer surface of the flange portion (10) of the inner plate (3).
A second groove portion (14) for engaging and locking the outer surface of the flange portion (12) of the outer plate (4), a first groove portion (13) and a second groove portion (13).
Located between the groove (14) and the convex (15) or concave (1
6) consists of and. In addition, holes (15A) (16A) for operating the coupling device (11) are formed in the convex portion (15) and the concave portion (16). A base wall (17) for embedding the first groove part (13) and the second groove part (14) in a heat insulating material to enhance the fixing force, a defining wall (18) for receiving the outer surface of the flange part, and a flange. Abutment against the outer surface of the base wall (17)
And an abutment wall (19) that faces the outside and is exposed to the outside. In addition, the flange portions (10) and (12) and the first and second groove portions are caused by some factors such as inward or outward warpage of the flange portion caused by an imbalance in pressing force due to the foaming jig or an error due to bending. (13) Even if a gap is formed between the flange and the groove due to point or line contact rather than surface contact with (13) and (14), the foaming undiluted solution should not leak to the outside through this gap. A recess (20) is formed in the defining walls (18) of the first groove (13) and the second groove (14), and the recess (20) has a root portion and is projected outward. For details, contact wall (19)
Provide a fin piece (21) protruding so as to incline downward when the upper part is located above. The fin piece (21) is made of a flexible soft material such as soft foamed vinyl chloride, and can be housed in the recess (20) when pressed. Further, the contact wall (19) is made thinner than the base wall (17), and the contact wall (19) is
Is inclined inward from the horizontal direction by several degrees, for example, about 3 ° to give elasticity. The outer end of the contact wall (19) is positioned outward of the outer end of the base wall (17) and the outer end of the base wall (17) and the inner plate (3) or outer plate (4). There is a space between it and the inner surface. When the grooves (13) and (14) are formed in this way, the length of the regulation wall (18) is wider than the distance between the extension line of the base wall (17) and the outer end of the contact wall (19). It will form the next dovetail. A seal piece (22) made of a soft material such as soft foamed vinyl chloride is provided on the outer edge of the abutment wall (19) in order to bring the panels into close contact with each other when the panels are connected to each other.

The filling of the foaming undiluted solution will be described with the above configuration. The four flange portions (10) of the inner plate (3) are locked in the first groove portions (13) of the four frame members (5), The four flange portions (12) of the outer plate (4) are engaged with the second groove portions (14) of the frame member (5), respectively, and the inner and outer plates (3) (4) and 4 are formed by a foaming jig. Press and fix the two frame materials (5),
Inject the stock solution through the inlet (not shown). At this time, the undiluted solution reaches the inner surfaces of the flange portions (10) (12) through the gap between the inner surfaces of the inner plate (3) and the outer plate (4) and the outer end of the base wall (17),
Foams at this part. Therefore, the base wall (17) is buried in the heat insulating material (6), the contact area with the heat insulating material is widened, and the frame material (5) can be firmly fixed. And it is possible to fill the end of the panel with heat insulating material,
The heat insulating property can be improved. In addition, the flange part (1
0) (12) The undiluted solution that has reached the inner surface tries to ooze out through the gap if there is a gap between the flange portion and the base wall. However, the inner plate (3) and outer plate (4) formed by the foaming jig. ), The fin piece (21) is in contact with the outer surface of the flange portion, so that bleeding is suppressed. Further, the undiluted solution that collects in the fin piece (21) and the recess (20) presses the fin piece (21) against the outer surface of the flange portion due to the pressure of foaming, and the fin piece (2
The contact area between 1) and the flange will be increased, and since it will work to improve the sealing performance of this part,
It is possible to prevent the heat insulating material from oozing out. Therefore, post-treatment such as removal of urethane residue after foaming and surface finishing, which has been conventionally performed, can be eliminated. Also the base wall (1
By making the thickness of the contact wall (19) thinner than that of (7) and inclining the contact wall (19) inward, the contact wall (19)
The elastic force (restoring force when warping is generated) is retained in the and the action of pressing the flange part inward with the contact of the flange part can be expected, and the locking of the flange part is ensured. , It is possible to eliminate the outward warp of the contact wall (19) when the panel is completed and to improve the adhesion of the panel connection.

〔The invention's effect〕

As described above in detail, according to the present invention, the first and second groove portions for locking the flange portion are constituted by the base wall, the defining wall and the contact wall, and the outer end of the contact wall is formed by the base wall. Since the outer edge of the base wall and the inner surface of the inner plate and the inner surface of the outer plate are spaced apart from each other, the foamed heat insulating material is filled up to the inner surface of the flange portion. As a result, the heat insulating property of the end portion of the heat insulating panel can be improved, and the heat insulating ability of the entire panel can be improved. Also, by making the contact wall thinner than the base wall and inclining the contact wall inward, the contact wall has elasticity (restoring force when warping is generated). As a result, it is possible to expect the action of pressing the flange part inward with the contact of the flange part, ensuring the locking of the flange part and eliminating the outward warpage of the contact wall when the panel is completed. The adhesion of the connection can be improved.

[Brief description of drawings]

Each drawing shows one embodiment of the present invention, FIG. 1 is an external perspective view of a heat insulation panel, FIG. 2 is an external perspective view of an assembled low-temperature storage, and FIG.
FIG. 4 is a sectional view taken along the line AA of FIG. 1 with a part omitted, FIG. 4 is a sectional view of a frame material, and FIG. 5 is a sectional view showing an enlarged state of a portion B of FIG. . (2) ... Insulation panel, (3) ... Inner plate, (4) ... Outer plate,
(5) ... Frame material, (6) ... Foam insulation, (10), (12)
... Flange part, (13) ... First groove part, (14) ... Second groove part, (17) ... Base wall, (18) ... Defining wall, (19) ... Abutting wall,
(20) ... recess, (21) ... fin pieces, (22) ... seal pieces.

Claims (1)

[Claims] 1. An inner plate and an outer plate each having a flange portion that is rectangular in a plan view and is bent in its four sides to form a substantially L shape.
It has a first groove portion that locks the flange portion of the inner plate and a second groove portion that locks the flange portion of the outer plate, and a convex portion or a concave portion is formed between the both groove portions, and the convex portion or the concave portion is formed inside thereof. A frame member for disposing a coupling device, and a foaming heat insulating material filled between the inner and outer plates in a state where the inner and outer plates are locked to the frame member are provided, and the both groove portions contact the base wall and the regulation wall. A contact wall, the base wall and the contact wall are opposed to each other, the thickness of the contact wall is made thinner than the thickness of the base wall, the contact wall is inclined inward, and the contact is made from the outer end of the base wall. A heat insulation panel characterized in that an outer end of a wall is extended outward to form a dovetail groove.