JPS6124212Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a multilayer dustproof device, and its purpose is to ensure that the adhesive sheet does not peel off or turn over during use, so that it can be used safely and exhibits a good dustproof function. To provide multi-layer dustproof equipment.

Conventionally, entrances to hospital operating rooms and examination rooms where dust should not be allowed to enter have been installed to collect and remove dust and bacteria adhering to the soles of the shoes of those entering the room, the tires of transportation trolleys, etc. Dust removal sheets are placed.

Such sheets are usually made of adhesive on the surface and are made up of a single pine-like structure, but in most cases, many adhesive sheets are laminated into a flat plate, with the uppermost surface A so-called multilayer dustproof plate is used, which is sequentially peeled off and used when the dust removal ability of the object decreases. In this case, if used as is, the multilayer dustproof plate 1 would shift every time a pedestrian or car passes by, so the multilayer dustproof plate 1 is generally used by being fixed to a mounting tool 2 as shown in FIG.

However, there is no particular problem when pedestrians or cars pass through the center of the plate, but if a person or car rides on the four corners, the corners will turn over, especially if they are approximately the same as the top surface of the dustproof plate 1. Or, at the initial stage when the device is higher than the surface of the device, the four corners are markedly turned up as shown by 3 in Figs. will be torn off. This phenomenon not only impairs the original function of the dustproof plate, but is also unfavorable from the standpoint of safety for pedestrians.

The present invention improves on such conventional drawbacks, and is designed so that the uppermost surface of at least four corners surrounding the dustproof plate of the mounting tool for fitting and fixing the multilayer dustproof plate is higher than the top surface of the multilayer dustproof plate. This is to prevent the above-mentioned phenomenon from occurring.

In the present invention, the portion where the uppermost surface of the mounting device is made slightly higher than the upper surface of the multilayer dustproof plate is preferably located near each corner, as shown by broken lines in the plan view in FIG. The entire area surrounding the multilayer dustproof plate may be raised, but as the adhesive sheet is peeled off, the dustproof plate becomes thinner and the height difference becomes too high. It is sufficient and most preferred for use. The difference in height between the top surface of the mounting tool and the top surface of the multilayer dustproof plate is usually preferably about 0.5 to 2 mm.
If it is less than 0.5 mm, the effect will not be sufficient, and if it is more than 2 mm, the thickness of a multilayer dustproof plate is usually about 1.5 to 2.5 mm, so a difference of 3.5 to 4.5 mm will occur in the final stage. If the difference is 4.5 mm or more, it is not preferable because a difference in level occurs, which affects walking safety and also causes vibrations when passing cars, etc.

Figure 3 is a plan view of the present invention, where 1 is a multilayer dustproof plate, 2
is an attachment. A portion 4 indicated by a broken line is a portion formed slightly higher than the surface of the multilayer dustproof plate 1. FIG. 4 is a sectional view of that part, and a, b, c, and d show specific examples of its shape. a is the upper surface 4 of the corner of the attachment itself
In this example, a is formed slightly higher, and b is raised like a mountain so that the top portion 4b thereof protrudes from the upper surface of the multilayer dustproof plate 1. In the same way, increase the height of the top part 4.
c is formed to protrude. d is an example in which a partially high protruding portion 4d is formed. In the case of d, for example, as shown in the plan view in FIG. You can also do this.

Since the present invention is constructed in this way, even if the four corners of the dustproof device are stepped on by shoes or wheels,
Since the corners 4' of the multilayer dustproof plate 1 are not in direct contact,
There is no damage such as the corners of the adhesive sheet turning over or peeling off, the entire uppermost surface is always maintained accurately, and the dust-proofing effect can be fully exhibited without causing any hindrance to traffic.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional multilayer dustproof plate, Fig. 2 is an enlarged sectional view of a part thereof, Fig. 3 is a plan view of the present invention, and Fig. 4 is a part showing an example of the four corners of the present invention. FIG. 5 is a partial plan view showing an example of the four corners of the present invention. 1... Multilayer dustproof plate, 2... Attachment, 4... Part to be raised

Claims (1)

[Scope of utility model registration request] A rectangular multilayer dustproof plate made by laminating sheets with surface adhesiveness in a flat plate shape is fitted and fixed to a mounting device, and the top surface of at least four corners surrounding the multilayer dustproof plate is a multilayer dustproof plate. A multilayer dustproof device characterized by being formed to protrude slightly from the top surface of the board.