JP2009205390A - Rfid tag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an RFID tag which can be attached to an adherend such as a conductive container, and which reduces the risk of damage due to the action of external force, and which can be repeatedly used even when the adherend is a reusable container such as a returnable case. <P>SOLUTION: This RFID tag is equipped with: an abutting part 2 attached in parallel with the surface of an adherend to the surface of the adherend; and an erected part 3 erected almost vertically from the abutting part 2, and made of non-conductive synthetic resin materials. An IC chip and a loop antenna are built in the erected part 3 so that the antenna axis of the loop antenna can be made almost vertical to the erected part 3. Thus, when the RFID tag 1 is attached to the adherend, the antenna axis of the loop antenna 5 is separated from the surface of the adherend by a prescribed distance, and arranged almost in parallel with the surface of the adherend. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an RFID tag that performs radio frequency (non-contact) information communication using RFID (Radio Frequency Identification) technology, and in particular, a container that contains a conductive substance such as a conductive liquid or itself has conductivity. The present invention relates to an RFID tag attached to a conductive container.

  With the widespread use of RFID tags using RFID (Radio Frequency Identification) technology, logistics management and product management are performed by attaching RFID labels incorporating RFID tags to products and outer boxes that contain the products. When the adherend (product, outer packaging box) to which the RFID label is affixed is a container that contains a conductive substance such as a conductive liquid or a conductive container that itself has conductivity, the RFID tag It may interfere with reading and writing.

  That is, if a metal or moisture is present near the RFID tag, electromagnetic waves are absorbed by the metal or moisture, thereby causing troubles in reading and writing of the RFID tag. This phenomenon is remarkable in an RFID tag using UHF waves. Appear in

  Therefore, a magnetic sheet in which a magnetic material is disposed on both sides of an RFID tag to be affixed to a non-metallic article and a compensation sheet in which a metal pattern is formed are laminated, and this magnetic sheet increases the inductance of the loop antenna coil, On the other hand, a tag that can be affixed to a metal article by reducing the inductance by using a compensation sheet to offset the effects of both is known (for example, see Patent Document 1).

  However, in the prior art, a special structure such as a magnetic sheet and a compensation sheet is required to accommodate a container for storing a conductive substance such as a conductive liquid or a conductive container that itself has conductivity. Since the RFID tag is directly attached to the surface of the adherend, it is easily damaged when an external force acts on the RFID tag attached to the surface, and the adherend is repeatedly used. In the case of a container such as a returnable box, there is a problem that it is difficult to use repeatedly.

JP-A-2005-70855

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a conductive material such as a liquid having conductivity without using a special configuration of a magnetic sheet and a compensation sheet. A container that can be attached to an adherend such as a conductive container or a conductive container that itself has electrical conductivity, and can reduce the risk of breakage caused by the action of external force. The present invention provides an RFID tag that can be used repeatedly even when it is a container such as a container.

In order to solve the above problems, the present invention has the following configurations.
The gist of the invention described in claim 1 is an RFID tag having a loop antenna joined to an IC chip and performing information communication wirelessly using RFID technology. The RFID tag is in contact with the surface of an adherend, and The IC chip and the loop antenna are provided with a contact portion that is attached in parallel to the surface of the body, and a standing portion that is erected substantially vertically from the corresponding contact portion and is made of a non-conductive synthetic resin material. The RFID tag is incorporated in the standing part so that the antenna axis of the loop antenna is substantially perpendicular to the standing part.

  The RFID tag of the present invention is in contact with the surface of the adherend and is mounted substantially parallel to the surface of the adherend, and from the non-conductive synthetic resin material. The RFID tag is attached to the adherend by incorporating the IC chip and the loop antenna in the standing part so that the antenna axis of the loop antenna is substantially perpendicular to the standing part. When attached, the antenna axis of the loop antenna is arranged at a predetermined distance from the surface of the adherend and substantially parallel to the surface of the adherend, so that the adherend is conductive such as a conductive liquid. Even when a container containing a conductive material or a conductive container that itself has conductivity, most of the magnetic flux penetrating the loop antenna does not pass through the adherend, so that a special magnetic sheet and a compensation sheet are used. RF without using configuration There is no hindrance to reading and writing of the D tag, and it can be attached to an adherend such as a conductive container or the like containing a conductive substance such as a conductive liquid, and an IC. Since the chip and loop antenna are protected by the standing part, the risk of damage caused by the action of external force can be reduced, and even if the adherend is a container such as a returnable box, it is used repeatedly. There is an effect that can be done.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external perspective view showing the configuration of an embodiment of the RFID tag according to the present invention, and FIG. 2 is a plan view showing the configuration of the embodiment of the RFID tag according to the present invention.

  1 and 2, the RFID tag 1 according to the present embodiment is in contact with the surface of the adherend, and has a plate-like contact portion 2 attached in parallel to the surface of the adherend, and the contact portion. 2 is composed of a plate-like standing portion 3 erected substantially vertically from one end of 2 and a reinforcing portion 4 that reinforces the positional relationship between the contact portion 2 and the standing portion 3. 3 includes an inlet 7 in which an IC chip 6 is bonded to a loop antenna 5 of a metal foil (Cu or Al) formed on a film substrate such as a PET (polyethylene terephthalate) film. Note that the RFID tag is a tag capable of wireless (non-contact) information communication using RFID (Radio Frequency Identification) technology, and may be represented by other names such as a non-contact electronic tag and a wireless tag. However, in this specification, it is expressed as a representative RFID tag.

  The contact portion 2, the standing portion 3, and the reinforcing portion 4 are made of a non-conductive synthetic resin material such as plastic, and are formed by, for example, integral molding. In addition, when the contact part 2 and the standing part 3 have sufficient strength at the connection portion, the reinforcing part 4 may be omitted. Moreover, if the standing part 3 is non-conductive, the contact part 2 does not necessarily need to be non-conductive, and you may comprise the contact part 2 and the standing part 3 by another member.

  The contact portion 2 is formed with a screw hole 21 so that the contact portion 2 can be screwed to the surface of the adherend. In addition, there is no restriction | limiting in particular about the attachment method of the contact part 2 to a to-be-adhered body, For example, you may make it stick the contact part 2 on the surface of a to-be-adhered body with an adhesive.

  As shown by arrows in FIGS. 2B and 2C, the loop antenna 5 built in the standing portion 3 has the antenna axis of the loop antenna 5 substantially perpendicular to the standing portion 3, and It arrange | positions so that it may become parallel with respect to the contact part 2. FIG. Thereby, when the RFID tag 1 is attached to the adherend, the antenna axis of the loop antenna 5 is arranged at a predetermined distance from the surface of the adherend and substantially parallel to the surface of the adherend. .

  Moreover, the sticking area | region 31 to which a label is stuck is formed in the one side of the standing part 3, and it can come to be used as a display part which performs the display etc. which identify a to-be-adhered body or a content. Yes.

  As described above, according to the present embodiment, the abutting portion 2 that abuts on the surface of the adherend and is attached in parallel with the surface of the adherend, and is erected substantially vertically from the abutting portion 2. The IC chip 6 and the loop antenna 5 are erected so that the antenna axis of the loop antenna 5 is substantially perpendicular to the standing part 3. By being incorporated in the part 3, when the RFID tag 1 is attached to the adherend, the antenna axis of the loop antenna 5 is arranged at a predetermined distance from the surface of the adherend and substantially parallel to the surface of the adherend. Even if the adherend is a container that contains a conductive substance such as a conductive liquid or a conductive container that itself has conductivity, most of the magnetic flux that penetrates the loop antenna 5 Since it does not pass through the adherend, the magnetic material sheet and the compensation Even without using a special configuration, the container that contains a conductive substance such as a liquid that does not interfere with reading and writing of the RFID tag 1 or a conductive container that itself has conductivity, etc. Since the IC chip 6 and the loop antenna 5 are protected by the standing portion 3, the risk of damage caused by the action of external force can be reduced, and the adherend can be repeatedly used. Even in the case of a container such as a returnable box, there is an effect that it can be used repeatedly.

  Note that the present invention is not limited to the above-described embodiments, and it is obvious that the embodiments can be appropriately changed within the scope of the technical idea of the present invention. In addition, the number, position, shape, and the like of the constituent members are not limited to the above-described embodiment, and can be set to a number, position, shape, and the like that are suitable for implementing the present invention. In each figure, the same numerals are given to the same component.

It is an external appearance perspective view which shows the structure of embodiment of the RFID tag which concerns on this invention. It is a top view which shows the structure of embodiment of the RFID tag which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 RFID tag 2 Contact part 3 Standing part 4 Reinforcement part 5 Loop antenna 6 IC chip 7 Inlet 21 Screw hole 31 Pasting area

Claims (1)

An RFID tag having a loop antenna joined to an IC chip and performing information communication wirelessly using RFID technology,
An abutting portion that abuts on the surface of the adherend and is attached in parallel with the surface of the adherend;
An upright portion that is erected substantially vertically from the contact portion and is made of a non-conductive synthetic resin material;
The RFID tag, wherein the IC chip and the loop antenna are built in the standing portion so that an antenna axis of the loop antenna is substantially perpendicular to the standing portion.

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