JPS6032865Y2 - Multilayer transparent board - Google Patents

Description

[Detailed description of the invention] The present invention relates to a multilayer transparent plate equipped with a spacer having a substantially cylindrical cross section that is connected in a frame shape by a connecting tool, and its purpose is to insert the connecting tool into the spacer. The purpose is to make the spacer simple and to prevent the spacer from rusting.

Generally, the spacers of multi-layer transparent plates used in frozen or refrigerated showcases, etc. are made of aluminum in consideration of rust prevention and light weight. Aluminum is continuously injected into a cylindrical shape using an injection molding machine. After molding, the molded material is cut into predetermined dimensions, and a set of four pieces is connected to each other using a connecting tool to form a frame shape.

In such a configuration, since the spacer is made of aluminum, there is no need to apply anti-rust coating to the cut surfaces that will become the end faces. When inserting the spacer, the gap prevents the insertion of the connecting tool, which slows down the process of connecting the spacer, and the price of aluminum itself is high.

The present invention was developed in view of these drawbacks, and examples thereof will be described below with reference to the drawings.

Reference numeral 1 shown in FIGS. 1 to 3 is a multi-layer transparent plate in which a heat insulating space 5 is formed by two transparent plates 2 and 3 facing each other with a spacer 4 in between. is pasted with adhesive 6, and the peripheral edges of both transparent plates 2 and 3 and the spacer 4 are attached.
A sealing material 7 made of rubber or the like is welded to the recess defined by the outer surface of the housing.

The spacer has a cylindrical shape with an elongated ventilation passage 8 formed on the inner surface facing the heat insulating space 5, and is filled with a desiccant 9 such as silica gel, and has elastic corrugated legs 10a, 10.
They are connected in a frame-like manner by a resin connecting tool 10 provided with a.

Next, manufacturing of the spacer 4 will be explained with reference to FIGS. 4 to 7.

A pre-plated steel plate 4A, such as a galvanized steel plate, which is the material of the spacer 4, is cut into a plurality of pieces at the positions indicated by chain lines in FIG. As shown in the figure, a ventilation passage 8 is formed at the same time as the tube is bent into a cylindrical shape.

Next, as shown in FIGS. 6 and 7, both left and right end surfaces that are the cut surfaces and both end surfaces that form the ventilation passage 8 are subjected to rust prevention treatment such as phosphate treatment to form a rust prevention coating 11A. By forming IIB, the spacer 4 is manufactured.

According to such a configuration, the spacer 4 has anti-rust coatings 11A, I on both left and right end surfaces which are cut surfaces and on both end surfaces forming the ventilation passage 8.
Since the IB is formed, rust will not occur on the cut surface due to moisture contained in the air in the heat insulating space 5, and furthermore, the cracks that occur on the cut surface on both the left and right ends are covered by the anti-corrosion coating 11A. The legs 10a of the connector 10 are attached to the spacer 4.
, 10a, the legs 10a * 10a slide smoothly, making it easy to connect the spacer 4.

Further, since the spacer 4 itself is manufactured from the steel plate 4A, it can be manufactured at a lower cost than aluminum, and its strength can be improved.

As described above, the present invention is directed to a multilayer transparent plate in which a heat insulating space is formed by two transparent plates facing each other via a spacer having a substantially cylindrical cross section connected in a frame shape by a connector. ,
The spacer is made by cutting a steel plate and bending it into a cylindrical shape, with a ventilation passage formed on the side of the heat-insulating space.An anti-rust coating is applied to both the left and right end faces, which are the cut surfaces, and to both end faces, which form the ventilation passage. Since the anti-rust coating prevents rust from forming on the cut surface, it also covers the cracks that occur on the cut surface to facilitate smooth insertion of the legs of the connector into the spacer. This simplifies the work of connecting the spacer, and also makes the spacer cheaper and stronger.

[Brief explanation of the drawing]

The drawings show an embodiment of the multilayer transparent plate according to the present invention, and FIG. 1 is a front view thereof, FIG. 2 is a cross-sectional view taken along line A-A' in FIG. 1, FIG. 3 is a perspective view of the main part, and FIG. 4 is a spacer. 5 is a perspective view of a spacer, FIG. 6 is a sectional view taken along line 13-B' in FIG. 5, and FIG. 7 is a sectional view taken along line CC' in FIG. 5. 2.3...Transparent plate, 4...Spacer, 5
...Insulation space, ventilation path, IIA,
IIB...Rust prevention coating.

Claims (1)

[Scope of utility model registration request] In a multi-layer transparent plate in which a heat insulating space is formed by two transparent plates facing each other via a spacer having a generally cylindrical cross section connected in a frame shape with a connector, the spacer is made by cutting a steel plate. It is bent into a cylindrical shape, and a ventilation passage is formed on the side of the heat insulation space. A multilayer transparent plate characterized by forming a thick anti-rust coating.