JPH0544124Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a hollow panel for forming a heat insulating panel used for walls of prefabricated refrigerators/freezers, clean rooms, etc.

Prior Art This type of hollow panel includes two face plates arranged at a distance from each other and a frame member having a U-shaped cross section and arranged between opposing edges of both face plates. An inward folded edge is provided on the same edge of the face plate, a groove is formed in the length direction of the frame member at the face plate connecting edge of the frame member, and the folded edge of the face plate is hung in the groove. It is known that the surface plate and the frame member are connected by being fitted together with a stop member.

Problems to be Solved by the Invention In the above-mentioned conventional hollow panel, a hooking member is required to connect the surface plate and the frame member, which not only makes the connection work troublesome, but also increases the manufacturing cost of the hooking member. , was not effective.

The purpose of this invention is to provide a hollow panel for forming a heat insulating panel that solves the above problems.

Means for Solving the Problems The hollow panel for forming a heat insulating panel according to this invention has two face plates arranged at a distance from each other, and a cross section interposed between opposing edges of both face plates. In a hollow panel for forming a heat insulating panel having a U-shaped frame member, an inward folded edge is provided at the same edge of both face plates, and a tapered edge is provided near the tips of two opposing walls of the frame member. Each of the tapered inclined parts is provided with an outward folded edge at the tip of both inclined parts, and the inward folded edge of both surface plates is respectively engaged with the outward folded edge. This is characterized in that the inclined portion is provided with an outwardly protruding portion for preventing engagement and disengagement of the folded edge.

Embodiment An embodiment of this invention will be described below with reference to the drawings.

Figure 1 shows wall structure insulation panel 1 of a prefabricated refrigerator.
1 and a ceiling-forming heat insulating panel 12, which is formed from a hollow panel according to this invention.

The wall structure insulation panel 11 includes a pair of aluminum surface plates 2 arranged at a predetermined interval on the left and right sides.
1, 22, a core material 23 formed by injecting and foaming a foamable resin heat insulating material between both surface plates 21, 22, and a synthetic resin disposed between the upper edges of both surface plates 21, 22. A frame member 24 is provided.
Inward folded edges 2 are provided on the upper edges of both surface plates 21 and 22.
5 and 26 are provided, respectively. Frame member 24
An upwardly convex fitting portion 27 extending in the longitudinal direction
is provided. Outer folded edges 28 and 29 are provided at the bases of both edges of the convex fitting portion 27, and the inner folded edges 25 and 26 of both surface plates 21 and 22 are engaged with these.

The ceiling structure insulation panel 12 includes a pair of aluminum surface plates 3 arranged vertically at a predetermined interval.
1, 32, a core material 33 formed by injecting and foaming a foamable resin heat insulating material between both surface plates 31, 32, and a synthetic resin frame member disposed between the left edges of both surface plates. It is equipped with 34. Both surface plates 3
1, 32 has an inward folded edge 35, 3.
6 are provided respectively. The frame member 34 has a substantially U-shaped cross section and is composed of upper and lower horizontal walls 37, 38, and a vertical wall 39 spanning the left edge of these walls.
Its opening is facing to the right. Upper and lower horizontal walls 37,
There is a tapered inclined part 4 near the tip of 38.
1 and 42 are provided, respectively. Both inclined parts 4
1, 42 followed by an outward folded edge 43,
44 are respectively provided, and both surface plates 3 are attached to these.
The inward folded edges 35 and 36 of Nos. 1 and 32 are engaged, respectively. Among both inclined parts 41 and 42,
The upper inclined part 41 is formed with two step parts 45 and 46 which become lower as they go further.
The second stepped portion 46 serves as an outwardly protruding portion for preventing engagement and disengagement of the folded edge. On the other hand, the lower inclined part 42
A downward-opening concave fitting portion 47 is provided on the left side, and the convex fitting portion 27 is fitted into this.

Next, with reference to FIG. 2, a procedure for connecting the surface plate 31 and the frame member 34 of the hollow panel that forms the ceiling-constituting insulation panel 12 will be described.

The procedure is shown sequentially from top to bottom in FIG. First, the ceiling component panel 12
The top surface plate 31, which is the upper surface plate, is turned over, and the frame member 34, which is also turned over, is slightly lifted up so that its left edge becomes higher, and the slanted portion 41 of the frame member protrudes outward. The tip of the folded edge 35 of the surface plate 31 is inserted between the tip of the folded edge 46 and the folded edge 43. Next, when the frame member 34 is lowered and slid, the folded edge 35 of the surface plate 31 eventually passes over the outward protrusion 46, and the folded edges 35 and 43 are engaged with each other. Next, although not shown in FIG. 2, the frame member 34
Ceiling component panel 1 is attached to the other folded edge 44.
The folded edge 36 of the surface plate 32, which becomes the lower surface plate of 2, is engaged.

As described above, both surface plates 3 are attached to the frame member 34.
When the first and second engaging members 1 and 32 are engaged, as shown in FIG.
Even if the frame member 34 and the two surface plates 31, 32 are shifted in a direction in which the engagement between the two folded edge portions 35, 43 is released, the surface plate 31 is prevented from being displaced by the outward protruding portion 46 of the frame member 34.
As a result, the engagement between the two folded edges 35, 43 cannot be easily released.

Effects of the invention According to this invention, it is possible to connect the top plate and the frame member without using any hooking members, unlike the conventional method explained at the beginning, and the two can be engaged with each other. Even if the folded edge attempts to disengage, the outward protrusion prevents this.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and FIG. 1 is a sectional view of a heat insulating panel formed of hollow panels according to this invention, and FIG. 2 is an explanatory diagram showing the procedure for connecting the face plate of the hollow panel and the frame member. FIG. 3 is an explanatory diagram showing the state of engagement between the surface plate and the frame member. 31, 32... Surface plate, 34... Frame member, 3
5, 36... Inward folded edge, 37, 38...
Wall, 41, 42... Slanted portion, 43, 44... Outward folded edge, 46... Outward protrusion (step).

Claims (1)

[Claims for Utility Model Registration] Two surface plates 31, 32 arranged at a distance from each other, and a U-shaped cross-sectional frame interposed between opposing edges of both surface plates 31, 32. Part 3
4, inwardly folded edges 35, 36 are provided at the same edges of both surface plates 31, 32, and two opposing walls 37, 38 of the frame member 34 are provided. tapered inclined portions 41, 42 are provided near the tips of the tapered portions 41, 42, respectively, and outward folded edges 43, 44 are provided at the tips of both inclined portions 41, 42, respectively. Inward folded edges 35 and 36 of both surface plates 31 and 32 are engaged, respectively,
A hollow panel for forming a heat insulating panel, characterized in that at least one inclined part 41 is provided with an outward protrusion 46 for preventing engagement and disengagement of the folded edge.