JP2022039242A - Furniture for goods - Google Patents

Abstract

To provide furniture made of metal which does not block a radio communication of an RF tag of an RF tag-attached article, even if the RF tag makes contact with or is located in proximity of a metal surface.SOLUTION: Furniture 1 for an RF tag-attached article is made of metal and designed to support a placement of an RF tag-attached article 2 being an article 20 with an RF tag 21 attached thereto. The furniture uses a dielectric wall part 11 in which a dielectric layer 111 having a sheet resistance value of 1000 Ω/sq or more, a dielectric constant of 10 or less and thickness of 3 mm or more, and a metal layer 110 are laminated, at a wall part 10 with or of which the RF tag 21 of the RF tag-attached article 2 makes contact or is located in proximity.SELECTED DRAWING: Figure 5

Description

The present invention relates to a fixture on which an article attached with an RF tag (RF: Radio Frequency), which is a medium used for individual identification by radio, is placed.

In automatic recognition technology using wireless communication, an information medium attached to an article is called an RF tag. The RF tag may also be referred to as a wireless tag, an IC tag, an RFID tag, or the like.

Metal fixtures are generally used as fixtures for placing (displaying or storing) articles with RF tags (hereinafter referred to as articles with RF tags). This is because when a plurality of RF-tagged articles are placed on one shelf wall (shelf board), the furniture needs to have the strength required to support the weight of the plurality of RF-tagged articles.

The RF tag attached to the article with the RF tag has an antenna corresponding to the frequency band used by the RF tag and an IC chip connected to the antenna for wireless communication. The frequency bands used by RF tags for wireless communication include LF band (LF: Low Frequency) and HF band (HF: High Frequency), but RF tags that use UHF band (for example, 860 to 960 MHz) for wireless communication It has become mainstream.

The metal that constitutes the fixture has the property of obstructing the radio communication of the RF tag. Therefore, if the RF tag attached to the article with the RF tag comes into contact with or comes close to the metal surface of the furniture, the wireless communication of the RF tag is hindered by the metal constituting the furniture.

For this reason, it is necessary to devise a metal fixture on which the article with the RF tag is placed so as not to interfere with the wireless communication of the RF tag attached to the article with the RF tag.

As an invention related to furniture that does not interfere with the wireless communication of the RF tag attached to the article with the RF tag, Patent Document 1 describes a spacer made of a low dielectric material containing a foamed resin, which defines the distance between the antenna of the RF tag and the metal surface. It has been disclosed. Even if the RF tag provided with the spacer disclosed in Patent Document 1 on the back surface is attached to a metal fixture (for example, a desk), the RF tag is not affected by the metal fixture due to the effect of the spacer.

Japanese Unexamined Patent Publication No. 2007-241788

There are various items such as goods, books, and materials as items with RF tags to be placed on metal furniture. The specifications of the RF tag of the article with the RF tag are often determined by the article to which the RF tag is attached. From this, it is considered desirable to provide a device to eliminate the influence of metal on metal fixtures instead of RF tags.

Therefore, an object of the present invention is to provide a metal fixture in which the radio communication of the RF tag is not hindered even if the RF tag of the article with the RF tag comes into contact with or is close to the metal surface.

The present invention, which solves the above-mentioned problems, is a metal fixture on which an RF-tagged article, which is an article to which an RF tag is attached, is placed, and a wall portion where the RF tag of the RF-tagged article is in contact with or is close to the metal fixture. In addition, it is a fixture for goods with an RF tag, which is characterized by using a dielectric wall portion in which a dielectric layer having a sheet resistance value of 1000 Ω / sq or more, a dielectric constant of 10 or less, and a thickness of 3 mm or more and a metal layer are laminated. be.
In the furniture for articles with RF tags according to the present invention, it is desirable to use the dielectric wall portion for the shelf wall portion, and further, it is desirable to use the dielectric wall portion for the side wall portion.
Further, in the furniture for articles with an RF tag according to the present invention, it is desirable to laminate the dielectric layer and the metal layer using a weak adhesive type adhesive, and further, a removable type adhesive is used. It is desirable that the dielectric layer and the metal layer are laminated.

The furniture for articles with an RF tag according to the present invention is configured to utilize the dielectric layer so that the RF tag is not affected by the metal layer in order to achieve the object according to the present invention.

The figure explaining the whole composition of the furniture for goods. The figure explaining the article with RF tag. The figure explaining the RF tag. The figure explaining the structure of the mounting surface of the furniture for goods. The figure explaining the effect of the dielectric wall part.

Hereinafter, the furniture for goods according to the present invention will be described with reference to the drawings. It should be noted that the technical scope of the present invention is not limited to the contents of the embodiments described below, but extends to the inventions described in the claims and their equivalents.

FIG. 1 is a diagram illustrating an overall configuration of an article fixture 1 with an RF tag according to the present embodiment. The fixture 1 for an article with an RF tag according to the present invention is a fixture configured so that a plurality of articles 2 with an RF tag, which is an article 20 to which the RF tag 21 is attached, can be placed.

FIG. 2 is a diagram illustrating an article 2 with an RF tag. The article 2 with an RF tag is an article 20 to which the RF tag 21 is attached. In FIG. 2, the article 20 to which the RF tag 21 is attached is a cardboard box, but as the article 20 to which the RF tag 21 is attached, various articles 20 such as goods, books, or materials can be assumed. In FIG. 2, the surface of the article 20 to which the RF tag 21 is attached is the bottom surface of the article 20. The surface of the article 20 to which the RF tag 21 is attached may be the side surface of the article 20.

FIG. 3 is a diagram illustrating the RF tag 21. The RF tag 21 attached to the article 20 is in the form of a seal label. The shape of the RF tag 21 is a horizontally long rectangular shape. As shown in FIG. 3, the layer structure of the RF tag 21 is formed by connecting the surface sheet 210 which is the surface of the RF tag 21, the first adhesive layer 211 formed by using an adhesive or the like, the IC chip 217, and the IC chip 217. The structure is such that an inlay 213 on which the antenna 212 is mounted and a second adhesive layer 214 formed by using an adhesive or the like are laminated. The RF tag 21 is attached to the article 20 using the second pressure-sensitive adhesive layer 214. The layer structure of the RF tag 21 shown in FIG. 3 is only an example, and the layer structure of the RF tag 21 attached to the article 20 is arbitrary.

An antenna 212 corresponding to the UHF band is mounted on the RF tag 21. The antenna 212 mounted on the RF tag 21 is composed of a pair of planar elements 216 and an antenna matching circuit 215. The IC chip 217 is connected to the antenna matching circuit 215, and the antenna matching circuit 215 is arranged between the pair of planar elements 216.

The fixture 1 for articles with an RF tag according to the present embodiment includes at least a top wall portion 10a, a pair of side wall portions 10b, and a back wall portion 10c as a wall portion 10 using at least a metal. Further, in the fixture 1 for articles with RF tags according to the present embodiment, at least one shelf wall portion 10d (as a wall portion 10 using at least metal in order to enable mounting of a plurality of articles 2 with RF tags). Here, 4 sheets) are provided.

In the fixture 1 for articles with RF tags according to the present embodiment, the wall portion 10 used for placing the articles 2 with RF tags is the shelf wall portion 10d. The RF tag 21 is attached to the bottom surface of the article 20, and each article 20 is placed so that the bottom surface to which the RF tag 21 is attached is in contact with the wall portion 10 used for placing the article 2 with the RF tag.

When the RF tag 21 of the RF-tagged article 2 comes into contact with or is close to the wall portion 10 of the RF-tagged article fixture 1 without any ingenuity, the influence of the metal constituting the wall portion 10 of the RF-tagged article fixture 1 Therefore, the wireless communication of the RF tag 21 is hindered. Therefore, in the RF-tagged article fixture 1 according to the present embodiment, even if the RF tag 21 of the RF-tagged article 2 comes into contact with or is close to the wall portion 10 of the RF-tagged article fixture 1, the radio communication of the RF tag 21 is performed. The wall portion 10 which may come into contact with or be in close contact with the RF tag 21 of the article 2 with the RF tag is devised so as not to be hindered. In the present invention, the wall portion 10 is referred to as a dielectric wall portion 11.

FIG. 4 is a diagram illustrating the structure of the dielectric wall portion 11 included in the furniture for goods 1 with an RF tag. As shown in FIG. 4, the dielectric wall portion 11 of the furniture for goods 1 with an RF tag has a structure in which a dielectric layer 111 having a sheet resistance value of 1000 Ω / sq or more and a dielectric constant of 10 or less and a metal layer 110 are laminated. It has become. The layer in contact with or in close proximity to the RF tag 21 is the dielectric layer 111. In the fixture 1 for articles with RF tags according to the present embodiment, the thickness of the dielectric layer 111 of the dielectric wall portion 11 is 3 mm or more, and the RF tag 21 of the article 2 with RF tags is separated from the metal layer 110 by 3 mm or more. It is in a state of being. As a material having a sheet resistance value of 1000 Ω / sq or more and a dielectric constant of 10 or less, for example, polyethylene terephthalate (PET) can be used.

In the dielectric wall portion 11, the dielectric layer 111 and the metal layer 110 do not necessarily have to be firmly adhered to each other. If the dielectric layer 111 and the metal layer 110 are laminated using a weakly adhesive type adhesive that can be peeled off after being attached, separate collection of the RF-tagged article fixture 1 can be facilitated. Further, by laminating the dielectric layer 111 and the metal layer 110 using a removable adhesive that can be peeled off as many times as necessary, the existing metal fixture can be used as the RF tag according to the present embodiment. When used as a fixture 1 for attached articles, the dielectric wall portion 11 can be reused.

As described above, the dielectric wall portion 11 described with reference to FIG. 4 is used for the wall portion 10 that may come into contact with or be in close proximity to the RF tag 21 of the RF-tagged article 2.

The dielectric wall portion 11 described with reference to FIG. 4 is used for at least the wall portion 10 on which the RF-tagged article 2 is placed. In the RF-tagged article fixture 1 described with reference to FIG. 1, the wall portion 10 on which the RF-tagged article 2 is placed is the shelf wall portion 10d. In the wall portion 10 for mounting the article 2 with the RF tag, the mounting surface of the article 2 with the RF tag is the dielectric layer 111 of the dielectric wall portion 11.

In addition, in the RF-tagged article fixture 1 described with reference to FIG. 1, the dielectric wall portion 11 described with reference to FIG. 4 is also used for the side wall portion 10b. This is because the RF tag 21 is considered to be attached to the side surface of the article 2 with the RF tag.

In the article fixture 1 with an RF tag described with reference to FIG. 1, the top wall portion 10a and the back wall portion 10c are wall portions 10 made of only metal. This is to improve the reading performance of the RF tag 21 of the RF-tagged article 2 by irradiating the radio wave from the front of the RF-tagged article fixture 1 with the top wall portion 10a and the back wall portion 10c. ..

FIG. 5 is a diagram illustrating the effect of the dielectric wall portion 11. FIG. 5 illustrates the dielectric wall portion 11 as the shelf wall portion 10d. As described above, in the fixture 1 for articles with RF tags according to the present embodiment, since the dielectric layer 111 is laminated on the dielectric wall portion 11, between the RF tag 21 and the metal layer 110 of the articles 2 with RF tags. The dielectric layer 111 will be present in.

Since a low-dielectric material having a sheet resistance value of 1000 Ω / sq or more and a dielectric constant of 10 or less is used for the dielectric layer 111, the distance between the RF tag 21 and the metal layer 110 should be 3 mm or more, that is, If the thickness of the dielectric layer 111 is set to 3 mm or more, it is possible to prevent the radio waves irradiated by the reader / writer from being absorbed by the metal layer 110, and the RF tag 21 is not affected by the metal layer 110.

1 Furniture for articles with RF tag 10 Wall 10a Top wall 10b Side wall 10c Back wall 10d Shelf wall 11 Dielectric wall 110 Metal layer 111 Dielectric layer 2 RF tag article 20 Article 21 RF tag

Claims (5)

A metal fixture on which an article with an RF tag, which is an article with an RF tag, is placed.
A dielectric wall in which a dielectric layer having a sheet resistance value of 1000 Ω / sq or more, a dielectric constant of 10 or less, and a thickness of 3 mm or more and a metal layer are laminated on a wall portion of the article with an RF tag in contact with or close to the RF tag. An article fixture with an RF tag, which is characterized by using a part. The fixture for goods with an RF tag according to claim 1, wherein the dielectric wall portion is used for the shelf wall portion. The fixture for articles with an RF tag according to claim 1 or 2, wherein the dielectric wall portion is used for the side wall portion. The furniture for articles with an RF tag according to any one of claims 1 to 3, wherein the dielectric layer and the metal layer are laminated using a weak adhesive type adhesive. The furniture for articles with an RF tag according to any one of claims 1 to 3, wherein the dielectric layer and the metal layer are laminated using a removable pressure-sensitive adhesive.

Images