JP2013167966A - Non-contact ic label built-in article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact IC label built-in article capable of excellently communicating with a data reading device even if a non-contact IC label is arranged inside a metal member.SOLUTION: A non-contact IC label built-in article 1 includes an article 10 having a metal member, and a non-contact IC label 20 built in the metal member. A housing part 17 for housing the non-contact IC label and a communication hole 18 for communicating the housing part and outside are formed inside the metal member. The non-contact IC label includes a magnetic sheet, and an IC chip and an antenna part provided on one surface of the magnetic sheet and electrically connected with each other. The other side of the magnetic sheet is attached on an inner surface of the housing part.

Description

  The present invention relates to a non-contact IC label built-in article that incorporates a non-contact IC label used in the UHF band and the SHF band.

Conventionally, wireless communication is performed between an RFID tag (a non-contact IC (Integrated Circuit) label) and a reader. However, when the RFID tag is attached to a metal body, the communication performance deteriorates. To solve this problem, the configuration of the RFID tag as described below has been proposed.
In UHF band and SHF band RFID tags, a dielectric or air layer is provided between an antenna (antenna portion) and a metal body, thereby ensuring a gap between the antenna and the metal body and suppressing the influence of the metal body. Is generally used.
There is also a metal integrated RFID tag in which an IC inlet is embedded and integrated in a metal article to which the RFID tag is attached, a part of the metal article is used as a radiating antenna, and the mechanical strength of the metal article is obtained.

  Patent Document 1 also proposes a configuration in which a magnetic body is provided between an antenna and a metal member. In this RFID tag, a soft magnetic material is disposed between the antenna and the metal member. In Patent Document 1, there is a clear description of the soft magnetic material, but the antenna to be used is only described to the extent of a dipole antenna and its modified antenna, and the detailed description of the antenna shape is also in actual verification. In addition, only an example in which the thickness of the magnetic material is 1 mm (communication distance is 15 mm) is described. Furthermore, there is no description about the metal body which is a to-be-adhered body.

In Patent Document 2, a shortened inlet (non-contact IC label) is sealed in a curable resin to form a tag main body, and this tag main body is embedded in a metal holder (metal member) formed of a metal material. This constitutes a metal-embedded RFID tag (a non-contact IC label-containing article). The shortened inlet includes an RFID chip (IC chip), a shortened antenna (antenna portion) electrically connected to the RFID chip, and a base material on which the RFID chip and the shortened antenna are integrally mounted.
In recent years, the RFID tag is used by being disposed in such a metal member. Specific examples of metal members include small metal utensils such as machine tools, medical equipment, and cooking utensils that are held by human hands, as well as machine parts, automobile parts, electrical parts, building parts, There are small metal parts such as piping parts.

JP 2005-309811 A JP 2007-135183 A

  However, when the RFID tag described in Patent Document 1 is arranged in a metal member and in the metal-embedded RFID tag described in Patent Document 2, the RFID tag is embedded in the metal member. There is a problem that the communication distance with the data reading device is shortened.

  The present invention has been made in view of such problems, and has a built-in non-contact IC label capable of good communication with a data reader even if a non-contact IC label is provided inside the metal member. The purpose is to provide goods.

In order to solve the above problems, the present invention proposes the following means.
The non-contact IC label built-in article of the present invention is a non-contact IC label built-in article comprising an article having a metal member and a non-contact IC label built in the metal member, A storage portion for storing the non-contact IC label, and a communication hole for communicating the storage portion with the outside are formed, and the non-contact IC label is provided on one surface of the magnetic sheet and the magnetic sheet, It has an IC chip and an antenna part electrically connected, and the other surface of the magnetic sheet is attached to the inner surface of the storage part.

In the non-contact IC label built-in article, the communication hole is more preferably formed in a slit shape.
In the above non-contact IC label built-in article, the communication hole is more preferably sealed with a non-conductive sealing portion.
In the non-contact IC label built-in article described above, it is more preferable that the sealing portion has water resistance.

In the non-contact IC label built-in article described above, it is more preferable that the sealing portion has chemical resistance.
In the non-contact IC label-containing article, it is more preferable that the magnetic sheet and the antenna unit have heat resistance.
The article with a built-in non-contact IC label includes: a base material formed in a film shape; and a circuit unit that electrically connects the IC chip and the antenna unit. The antenna unit and the circuit unit Is more preferably provided on one surface of the magnetic sheet in a state of being disposed on the main surface of the substrate.

In the non-contact IC label built-in article described above, it is more preferable that an index indicating a position where the non-contact IC label is attached is provided on the outer surface of the metal member.
In the above non-contact IC label built-in article, a hole conductive member, and a hole support portion that supports the hole conductive member so that a range in which the hole conductive member blocks the communication hole is adjustable. It is more preferable to comprise.
In the above non-contact IC label built-in article, the antenna conductive member and the range where the antenna conductive member overlaps the antenna portion when viewed in the thickness direction of the magnetic sheet can be adjusted. It is more preferable to include an antenna support portion that supports the antenna conductive member.

In the above non-contact IC label built-in article, the metal member can be divided into a first divided member and a second divided member, and the first divided member and the second divided member are assembled. It is more preferable that the storage portion and the communication hole are formed by the edge portion of the first division member and the edge portion of the second division member.
In the above non-contact IC label built-in article, the first divided member is formed with a first connection surface, the second divided member is formed with a second connection surface, More preferably, the first split member and the second split member are assembled by bringing the connection surface and the second connection surface into contact with each other.
In the above non-contact IC label built-in article, it is more preferable to provide a metal film that covers a portion that is a joint portion between the first divided member and the second divided member and is exposed to the outside.

In the above non-contact IC label-containing article, the metal member is formed in an elongated shape when viewed in the thickness direction of the magnetic sheet, and the thickness of the magnetic sheet is 100 μm or more, and the metal member More preferably, the width is 10 mm or less.
In the non-contact IC label built-in article, the metal member is formed in an elongated shape when viewed in the thickness direction of the magnetic sheet, and the thickness of the magnetic sheet is 200 μm or more. More preferably, the width is 25 mm or less.
In the non-contact IC label built-in article, the metal member is formed in an elongated shape when viewed in the thickness direction of the magnetic sheet, and the thickness of the magnetic sheet is 300 μm or more, and the metal member More preferably, the width is 50 mm or less.
In the non-contact IC label built-in article, it is more preferable to use a radio wave system as a communication system with the data reading device.

  According to the non-contact IC label built-in article of the present invention, even if a non-contact IC label is provided inside the metal member, communication with the data reader can be performed satisfactorily.

It is a perspective view of the non-contact IC label built-in article of the first embodiment of the present invention. It is an exploded view of the non-contact IC label built-in article. It is sectional drawing of the principal part of the same non-contact IC label built-in article. It is a top view of the non-contact IC label of the non-contact IC label built-in article. It is a side view of the non-contact IC label. It is a side view explaining the procedure of the experiment using the same non-contact IC label built-in article. It is a figure of an experimental result in case the thickness of the magnetic sheet of the non-contact IC label is 100 μm. It is a figure of an experimental result in case the thickness of the magnetic sheet of the non-contact IC label is 200 μm. It is a figure of an experimental result in case the thickness of the magnetic sheet of the same non-contact IC label is 300 micrometers. It is a perspective view of the non-contact IC label built-in article of the third embodiment of the present invention. It is an exploded view of the non-contact IC label built-in article in an embodiment of a modification of the present invention.

(First embodiment)
A first embodiment of a non-contact IC label built-in article (hereinafter abbreviated as “label built-in article”) according to the present invention will be described below with reference to FIGS. Hereinafter, a case where the article is a knife formed entirely of stainless steel will be described as an example. This label built-in article communicates with a data reader in a non-contact manner.
As shown in FIGS. 1 to 3, the label built-in article 1 of the present embodiment includes a knife 10 and a non-contact IC label 20 built in the knife 10. The knife 10 is formed in an elongated shape extending in the longitudinal direction D in plan view.

The knife 10 has a main body (first divided member) 11 and a lid (second divided member) 12, and the main body 11 and the lid 12 can be separated from each other and assembled.
The main body 11 is formed in a substantially plate shape that is long in the longitudinal direction D, and a stepped portion 13 is formed on the base end side of the one surface 11 a of the main body 11. The step portion 13 is formed so as to penetrate in the width direction E of the knife 10. The step portion 13 is formed with a hole portion 14 that is recessed in the thickness direction F of the main body 11 that is orthogonal to the longitudinal direction D and the width direction E. In this example, the hole 14 is recessed in a substantially rectangular parallelepiped shape, for example, with a depth of 1 mm. In the main body 11, a blade portion 11c is provided between the surface 11a on one side and the surface 11b on the other side, and tissue or the like can be incised by the blade portion 11c.
The lid body 12 is formed in a substantially plate shape. A step portion 15 is formed on the front end side of the bottom surface (second connection surface) 12 a of the lid 12 so as to penetrate in the width direction E. The depth at which the step portion 15 is recessed from the bottom surface 12a is, for example, 100 μm.

The main body 11 and the lid body 12 configured as described above make the upper surface (first connection surface) 13a and the bottom surface 12a of the step portion 13 abut, and the edge of the main body 11 and the edge of the lid body 12 Are assembled so that a slight gap S1 is formed in the longitudinal direction D. The width of the gap S1 is, for example, 10 μm. At this time, gaps S <b> 2 and S <b> 3 are also formed in the thickness direction F between the step portion 13 and the step portion 15. In this case, the widths of the gaps S2 and S3 are 100 μm.
The hole portion 14 and the step portion 15 form a storage portion 17 that stores the non-contact IC label 20 inside the knife 10, and a communication hole that connects the storage portion 17 and the outside of the knife 10 through the gaps S <b> 1 to S <b> 3. 18 is formed. In this example, the communication hole 18 is formed in a slit shape.
The main body 11 and the lid body 12 are made of stainless steel in this example, but may be made of a metal other than stainless steel such as aluminum. The main body 11 and the lid body 12 are connected by a connecting member such as an adhesive (not shown), bolts, and screws.
You may comprise so that the main body 11 and the cover body 12 may be connected by a fitting structure. By comprising in this way, the main body 11 and the cover body 12 can be attached or detached easily.

As shown in FIGS. 4 and 5, the non-contact IC label 20 is provided on the magnetic sheet 21, the communication unit 22 provided on one surface 21 a of the magnetic sheet 21, and the other surface 21 b of the magnetic sheet 21. And an adhesive layer 23. In addition, in FIG. 4, the base material 30 mentioned later is not shown.
As the magnetic sheet 21, a known material made of a composite material of magnetic particles or magnetic flakes and plastic or rubber can be used. As shown in FIG. 4, the magnetic sheet 21 is formed in a rectangular shape in plan view as viewed in the thickness direction F of the magnetic sheet 21 (corresponding to the thickness direction of the main body 11).

The communication unit 22 is disposed at the center of the magnetic sheet 21 in plan view.
The communication unit 22 includes an IC chip 25, an impedance matching circuit unit (circuit unit) 26 electrically connected to the IC chip 25, and an impedance matching circuit unit 26 electrically connected to the impedance matching circuit unit 26. The antenna element 27 and the antenna element 28 are disposed so as to be sandwiched in the longitudinal direction D.
The IC chip 25 has a known configuration, and predetermined information is stored in the IC chip 25. Then, by supplying radio wave energy from an electrical contact (not shown) provided on the IC chip 25 by a radio wave system, the stored information can be transmitted from the electrical contact to the outside as a radio wave.

In this embodiment, the impedance matching circuit unit 26 and the antenna elements 27 and 28 are integrally formed by printing silver paste ink on a base material 30 formed in a film shape with PET or the like.
The impedance matching circuit unit 26 is formed by wiring meandering into a predetermined shape. The impedance matching circuit unit 26 is electrically connected to an electrical contact (not shown) of the IC chip 25. The impedance matching circuit unit 26 is configured such that predetermined impedances and resistance values that are equal to each other are generated between the IC chip 25 and the antenna element 27 and between the IC chip 25 and the antenna element 28.
The antenna elements 27 and 28 are formed in a rectangular shape with long sides arranged in parallel with the longitudinal direction D. The antenna elements are constituted by the antenna elements 27 and 28.

The communication unit 22 configured as described above is a so-called dipole antenna having two antenna elements 27 and 28 on one surface 21 a of the magnetic sheet 21. The IC chip 25, the impedance matching circuit unit 26, and the antenna elements 27 and 28 are provided on one surface 21 a of the magnetic sheet 21 in a state of being disposed on the main surface 30 a of the base material 30.
As the adhesive layer 23, a known insulating adhesive such as synthetic rubber or acrylic can be appropriately selected and used. The non-contact IC label 20 is attached to the main body 11 by sticking the adhesive layer 23 to the bottom surface 14a of the hole 14 shown in FIG.

The label built-in article 1 configured as described above has the thickness of the magnetic sheet 21, the length of the knife 10 in the width direction E (hereinafter simply referred to as “width”), and the length of the knife 10 in the longitudinal direction D. By setting the length (hereinafter simply referred to as “length”) within a predetermined range, the knife 10 itself functions as a radiating antenna of the non-contact IC label 20 and communicates favorably with the data reader. can do.
In order to examine the range of the thickness of the magnetic sheet 21 and the range of the width and length of the knife 10 that achieve this purpose, experiments described below were conducted.
Note that the width and length of the knife 10 that communicates in a state of facing the data reading device is more dominant than the thickness of the knife 10 with respect to the communication distance, and communication due to the difference in the thickness of the knife 10. It has been found that there is almost no variation in distance. Further, in the case of this embodiment, when viewed in parallel with the thickness direction F, the knife 10 and the main body 11 have the same shape, so an experiment was conducted on the main body 11 instead of the knife 10. .
The definition of the communication distance will be described later.

  In this experiment, a rectangular metal plate in plan view was used as the main body 11B, and measurement was performed without attaching the lid 12 to the main body 11B. Further, as a comparative example, an experiment using a metal plate P of 250 mm × 250 mm was performed instead of the main body.

(1-1 Experiment)
In the experiment, the equipment and materials shown below were used, and the construction was as shown in FIG.
Magnetic sheet 21: NRC010 (100 μm thickness) manufactured by Daido Steel Co., Ltd.
IC chip 25: NCODE UCODE G2iL
Impedance matching circuit unit 26 and antenna elements 27 and 28
: Dimensions of antenna elements 27 and 28 23 mm (length) x 5 mm (width)
Pattern printing with silver paste ink on substrate 30 made of PET film (thickness 50 μm) (thickness 8 μm), other than IC chip 25 made in-house ・ Reader / writer R1: Reader / writer for RFID in 950 MHz band Mitsubishi Electric Corporation RF-RW002 (Maximum output 1W 30dBm)
Read antenna R2: 950 MHz band RFID antenna RF-ATCP001 manufactured by Mitsubishi Electric Corp. (maximum gain of circular polarization 6 dBi)
Fixed attenuator R3: Hirose Electric AT-107 (attenuation 7 dB)
The reader / writer R1, the reading antenna R2, and the fixed attenuator R3 constitute a data reading device R10.
Metal plate P: Stainless steel metal plate 250 mm (length) x 250 mm (width) x 0.5 mm (thickness)
Body 11B: Aluminum metal plate 100mm (length) x 5mm (width) x 3mm (thickness)
100mm x 10mm x 3mm
100mm x 25mm x 3mm
100mm x 50mm x 3mm
200mm x 5mm x 3mm
200mm x 10mm x 3mm
200mm x 25mm x 3mm
200mm x 50mm x 3mm

(1-2 Experimental method)
As a first experiment, an experiment as a comparative example was performed.
In this experiment, the non-contact IC label 20 in which the antenna elements 27 and 28 were 23 mm (length) × 5 mm (width) in shape was used.
As shown in FIG. 6, a non-contact IC label 20 is attached to the center of the metal plate P, and a communication distance (data reading) with the metal plate P to which the non-contact IC label 20 is attached is read by the reading antenna R2 of the data reader R10. Measurement of the maximum distance at which the device R10 can read information from the communication unit 22 in a non-contact manner was performed. The non-contact IC label 20 used in this experiment does not have the adhesive layer 23. A communication method between the communication unit 22 and the data reading device R10 is a radio wave method.
The experiment using the main body 11B is performed in the same manner as the experiment using the metal plate P.
In addition, in order to make the non-contact IC label 20 small and generally an article in which the non-contact IC label 20 is built is a small one, the width of the main body 11B exceeds 50 mm, and the main body 11B Those whose length exceeded 400 mm were excluded from the experiment. In order to make the non-contact IC label 20 thin, the thickness of the magnetic sheet 21 is preferably 300 μm or less.
As a matter of course, the length and width of the main body 11B are each longer than 0 mm.

  In this experiment, in order to bring the metal plate P and the magnetic sheet 21 of the non-contact IC label 20 into close contact with each other, a fired polystyrene (not shown) is placed on the non-contact IC label 20 and the metal plate P to the foamed polystyrene are put together. Fixed with a band. In addition, it has been found that the presence or absence of the adhesive layer 23 and the expanded polystyrene hardly affects the measurement result of the communication distance.

  The reader / writer R1 and the reading antenna R2 used in the experiment are UHF band high-power reader / writers and antennas that can read the non-contact IC label 20 at a certain communication distance. The maximum output of the reader / writer R1 is 1 W (30 dBm). For the convenience of the experimental environment, a −7 dB fixed attenuator R3 is connected to the coaxial cable connecting the reader / writer R1 and the reading antenna R2, and the output of the reader / writer R1 is output. The experiment was conducted by attenuating to 0.2 W (23 dBm).

  The reading antenna R2 was rotated toward the non-contact IC label 20, reading was performed at two angles of 0 degrees and 90 degrees with respect to the non-contact IC label 20, and the value with the longer communication distance was used as the experimental result. The magnetic sheet 21 used in the experiment was formed by superimposing 100 μm thick magnetic sheets to 200 μm and 300 μm thick magnetic sheets.

(1-3 Experimental results)
A non-contact IC label 20 was placed at the center of the above-described 250 mm × 250 mm metal plate P, and the reading experiment was performed by changing the thickness of the magnetic sheet 21. The experimental results are shown below.
When the thickness of the magnetic sheet 21 is 100 μm, the communication distance is 120 mm.
-When the thickness of the magnetic sheet 21 is 200 μm, the communication distance is 150 mm.
When the thickness of the magnetic sheet 21 is 300 μm, the communication distance is 150 mm.
This experiment is a comparative example in which the size of the metal plate P is sufficiently large with respect to the external dimensions (width and length) of the non-contact IC label 20 and the non-contact IC label 20 is arranged on the metal plate P. This was an experiment and was performed for comparison with a second experiment described later.
Since the size of the metal plate P does not resonate with the frequency of the communication electromagnetic wave of the reader / writer R1, the metal plate P does not function as a radiating antenna of the non-contact IC label 20, and radiates only the antenna elements 27 and 28 that the metal plate P has. Communication distance when antenna is used.

(2-1 Experimental method)
As a second experiment, an experiment as a comparative example of the present invention for confirming the communication distance of only the main body 11B was performed.
Combining a plurality of the above-mentioned metal plates, making a main body 11B of a total of 16 different sizes with four types of widths of 5 mm, 10 mm, 25 mm, and 50 mm and four types of lengths of 100 mm, 200 mm, 300 mm, and 400 mm, A non-contact IC label 20 was placed at the center of the main body 11B, and a reading experiment was performed by changing the thickness of the magnetic sheet 21.

(2-2 Experimental results)
Experimental results (graphs) when the thickness of the magnetic sheet 21 is 100 μm, 200 μm, and 300 μm are shown in FIG. 7, FIG. 8, and FIG. 9, respectively.
When the thickness of the magnetic sheet 21 shown in FIG. 7 was 100 μm, the following results were obtained. That is, in the case where the length of the main body 11B is 300 mm or less and the width of the main body 11B is 5 mm or 10 mm, the communication distance is 250 mm or more, and the communication distance more than double the 120 mm of the first experimental result. Is obtained. On the other hand, in the case where the width of the main body 11B was 25 mm and 50 mm, the result was the same as the first experimental result.

In the case where the thickness of the magnetic sheet 21 shown in FIG. 8 is 200 μm, the thickness of the magnetic sheet 21 is doubled compared to the case where the thickness is 100 μm, so that the overall communication distance increases. ing.
When the length of the main body 11B is 300 mm or less and the width of the main body 11B is 25 mm or less, 5 mm, 10 mm, and 25 mm, the communication distance is 250 mm or more, and the communication distance is 100 mm or more longer than the first experimental result of 150 mm. It has become. On the other hand, when the width of the main body 11B is 50 mm, the communication distance is longer than the first experimental result only when the length of the main body 11B is 200 mm or less.
When the main body 11B has a width of 5 mm, the communication distance reaches nearly 800 mm when the length of the main body 11B is 100 mm, and the communication distance tends to increase even when the width is 10 mm.

In the case where the thickness of the magnetic sheet 21 shown in FIG. 9 is 300 μm, the thickness of the magnetic sheet 21 is 1.5 times that in the case where the thickness is 200 μm. There is an increase.
When the length of the main body 11B is 300 mm or less and the width of the main body 11B is 5 mm, 10 mm, 25 mm, or 50 mm with a width of 50 mm or less, the communication distance is 200 mm or more, and the communication distance is longer than the first experimental result of 150 mm. It has become.
When the width of the main body 11B is 5 mm and 10 mm, the communication distance reaches nearly 800 mm when the length of the main body 11B is 100 mm.

  As described above, from the experimental results (graphs) shown in FIGS. 7, 8, and 9, the increase in communication distance is recognized with respect to the first experimental result, the thickness of the magnetic sheet 21, and the main body 11 </ b> B. By setting the width and length, the main body 11B resonates with the frequency of the communication electromagnetic wave, and the main body 11B itself functions as a radiation antenna for the non-contact IC label 20. Thus, it was found that good communication can be performed between the non-contact IC label 20 and the data reading device R10.

Since the output of the reader / writer R1 can be increased up to 1 W (30 dBm) by not using the fixed attenuator R3 in the data reading device R10, it goes without saying that the communication distance is further increased.
Furthermore, the thickness and electrical property values (permeability, magnetic loss, dielectric constant, dielectric loss, etc.) of the magnetic sheet 21 are made suitable, the impedance matching of the impedance matching circuit section 26, the antenna element 27, It is considered that the communication distance can be further extended by optimizing the shape of 28.

  In the second experiment described above, the experiment was performed without attaching the lid 12 to the main body. In an experiment which is an embodiment of the present invention to be described next, an experiment was conducted on how the communication performance changes by assembling the lid 12 to the main body 11.

(3-1 Experiment)
As shown in FIG. 1, a not-shown cello tape (registered trademark) was wound and fixed in a state where the main body 11 and the lid body 12 were pressed and adhered. The gaps S1 to S3 of the communication hole 18 were formed as follows.
In this example, the step portion 15 is formed by cutting the bottom surface 12a at 150 μm by cutting. Although not shown, a 50 μm-thick cello tape (registered trademark), which is an insulator, is attached to the entire surface of the main body 11, and a 100 μm-thick PET film, which is an insulator, is sandwiched between the gaps S2 and S3. Although it is necessary to form the gaps S1 to S3 very narrowly, the widths of the gaps S1 to S3 are accurately set by processing as described above.

The dimensions of the main body 11 used in this experiment are 200 mm (length) × 10 mm (width). From the results of the second experiment shown in FIGS. 7 to 9, the dimensions of the main body 11 resonate well with the frequency of the communication electromagnetic wave. I know that there is. Further, the antenna elements 27 and 28 of the non-contact IC label 20 are 7 mm (length) × 5 mm (width), and the length is extremely shortened with respect to the width.
The magnetic sheet 21 was 250 μm thick.

  The communication distance was measured by changing the presence / absence of the lid 12 and the attachment position of the non-contact IC label 20. In the measurement, on the assumption that the main body 11 resonates with the frequency of the communication electromagnetic wave and the main body 11 itself functions as a radiating antenna of the non-contact IC label 20 from the second experimental result, the surface (non-contact IC) is used in this experiment. In addition to the surface on the side on which the label 20 was affixed), the back surface and the left and right side surfaces were added to perform reading from four directions.

(3-2 Experimental results)
The results of the experiment are shown in Table 1.

In Experiment No. 1, the non-contact IC label 20 was attached to the bottom surface 14a of the hole 14, the lid 12 was not assembled, and the measurement was performed with the non-contact IC label 20 attached to the main body 11. The measurement results in this state are as shown in the table.
In the experiment number 2, the non-contact IC label 20 is affixed to the center of the surface 11b (see FIG. 1) of the main body 11, and the lid 12 is not assembled. This state is almost the same as the setting condition of the second experiment, and the measurement result in this state is approximately twice the communication distance as compared with the result of experiment number 1.

In Experiment No. 3, the non-contact IC label 20 is affixed to the bottom surface 14a of the hole 14, and the storage part 17 is formed by assembling the lid 12 to the main body 11. The measurement result in this state was almost the same as the result of Experiment No. 2.
In the experiment number 4, the non-contact IC label 20 is affixed to the step portion 15 of the lid 12 instead of the bottom surface 14a of the storage portion 17. As a result of measurement in this state, it was found that the communication distance was greatly increased as compared with the result of Experiment No. 3.

From the above, even in a state in which the lid 12 is assembled to the main body 11 and the storage portion 17 is formed, the non-contact IC stored in the storage portion 17 by the main body 11 resonating with the frequency of the communication electromagnetic wave. It has been found that the characteristic of the label 20 functioning as a radiating antenna is not lost, and good communication results can be obtained with an external data reader.
Thus, the state (experiment numbers 3 and 4) in which the scalpel 10 is constructed by assembling the lid 12 to the main body 11 is an example of the present invention, and the comparative example (only the main body 11 without the lid 12 being assembled) Experiment numbers 1, 2).

  Although the test results are not shown in the table, a plurality of non-contact IC labels 20 are provided on the knife 10 and some additional experiments for reading the plurality of non-contact IC labels 20 at the same time were performed. Shown in The experiment was performed by assembling the scalpel 10 with the lid 12 attached to the main body 11.

(Additional experiment 1)
Experiments combining Experiment No. 3 and Experiment No. 4 were performed. In other words, the non-contact IC label 20 is affixed to the bottom surface 14a and the step portion 15 of the storage unit 17, respectively, and the two non-contact IC labels 20 are read simultaneously. The above-described data reading device R10 used in the experiment has a multiple simultaneous reading (anti-collision) function.
As a result of the experiment, it was found that both non-contact IC labels 20 can be read well. From this, it becomes possible to provide a plurality of non-contact IC labels 20 in the storage unit 17, and for example, when applied to an article that requires long-term management of several decades, a non-backup IC for obtaining reliability. The contact IC label 20 can also be installed in the storage unit 17 in advance.

(Additional experiment 2)
Prepare a number of samples in the form of Experiment No. 4 (N number is 3), read the experiment to determine whether multiple simultaneous reading is possible with each knife 10 in electrical contact (conducting potential) Performed using apparatus R10. As a result of the experiment, it was found that all the non-contact IC labels 20 incorporated in the knife 10 can be read.

(Additional experiment 3)
A scalpel was formed with one member instead of being composed of two members such as a main body and a lid, a storage part was formed in the scalpel, and a sample in which the non-contact IC label 20 was stored in the storage part was produced. An experiment was conducted using the data reader R10 to determine whether a plurality of non-contact IC labels 20 could be read simultaneously. As a result of the experiment, it was found that all the non-contact IC labels 20 incorporated in the knife can be read.
Summarizing the results of the above additional experiments, even when a plurality of storage portions 17 are formed in the scalpel and the non-contact IC label 20 is installed in each storage portion 17, It was found that the non-contact IC label 20 can be read.

As described above, according to the label built-in article 1 of the present embodiment, the non-contact IC label 20 is attached in the storage unit 17, and the communication hole 18 that communicates with the storage unit 17 is formed in the knife 10. ing. For this reason, since the knife 10 itself resonates with the frequency of the communication electromagnetic wave, communication with the data reading device R10 can be performed satisfactorily.
Further, by disposing the non-contact IC label 20 in the storage unit 17, dust and moisture are prevented from directly attaching to the non-contact IC label 20, and the non-contact IC label 20 is damaged due to external force. Can be prevented.

Since the communication hole 18 is formed in a slit shape, it is possible to more reliably suppress dust and the like from entering the communication hole 18.
The IC chip 25, the impedance matching circuit unit 26, and the antenna elements 27 and 28 are provided on one surface 21 a of the magnetic sheet 21 in a state of being disposed on the main surface 30 a of the base material 30. Thus, the manufacturing efficiency of the non-contact IC label 20 can be improved by providing a plurality of components on the base material 30 in advance.

The knife 10 includes a main body 11 and a lid body 12 that can be divided and assembled with each other. For this reason, when the main body 11 and the lid body 12 are divided, the non-contact IC label 20 is easily arranged in the housing portion 17 of the knife 10 by attaching the non-contact IC label 20 to the hole 14 of the main body 11. can do. By processing the respective edge portions in a state where the main body 11 and the lid body 12 are divided, the communication holes 18 can be easily and accurately formed.
The knife 10 is assembled by bringing the upper surface 13a of the main body 11 and the bottom surface 12a of the lid 12 into contact with each other. Therefore, the load acting on the knife 10 in the thickness direction F can be supported by the upper surface 13a and the bottom surface 12a, and the strength against the load acting on the thickness direction F can be increased.

The thickness of the magnetic sheet 21 is not less than 100 μm and not more than 300 μm, the length of the knife 10 is longer than 0 mm and not more than 300 mm, and the width of the knife 10 is longer than 0 mm and not more than 10 mm. Thereby, the communication distance between the label built-in article 1 and the data reader R10 can be increased.
When the thickness of the magnetic sheet 21 is 200 μm or more and 300 μm or less, the length of the knife 10 is longer than 0 mm and 300 mm or less, and the width of the knife 10 is longer than 0 mm and 25 mm or less, and the thickness of the magnetic sheet 21 is Similarly, when the length of the knife 10 is longer than 0 mm and not longer than 300 mm and the width of the knife 10 is longer than 0 mm and not longer than 50 mm, the communication distance between the label built-in article 1 and the data reader R10 is the same. Can be lengthened.

  Conventionally, as a method of embedding a non-contact IC label in a knife, a method of digging one side of the knife and storing the non-contact IC label at the bottom of the hole, or penetrating a member from the side of the knife There is a method of providing a hole and storing a non-contact IC label in the hole. Either method can store a non-contact IC label without dividing the knife. On the other hand, in the storage part 17 provided in the knife 10 of the present invention, if the shape of the storage part 17 is a rectangular parallelepiped shape, the inner surface is a total of six surfaces including a floor surface, a ceiling surface, and four wall surfaces. It becomes.

When the cross-sectional shape of the communication hole 18 is smaller than the outer shape of the non-contact IC label 20, the non-contact IC label cannot be stored in the storage unit as it is in the structure in which the knife is integrally formed. Therefore, in order to store the non-contact IC label in the storage portion, it is necessary to make the knife at least divided into two. A divided structure is required in which one or more of the six inner surfaces described above are opened during division.
In view of the above, a knife that is originally made integrally is forced to have at least a two-part structure for the above reasons. In the case where the article is required to have mechanical strength such as a tool, the article should be divided at a place other than the strength-decreasing portion because the strength should not be reduced by the division. For an article that does not matter mechanical strength, this division method is free and may be a division form that can be considered from the viewpoint of cost, productivity, and the like.

  In the present embodiment, the storage portion 17 and the communication hole 18 are defined as boundaries (surfaces) that are divided into divided members. However, the opening method of the storage portion 17 and the formation method of the communication holes 18 are not limited to this and can be freely designed. Needless to say, you can. In addition, when the cross-sectional shape of the communication hole is larger than the outer shape of the non-contact IC label 20, the non-contact IC label 20 can be inserted and installed from the communication hole into the storage portion, so that there is no need to divide the knife. Conceivable.

  In the label built-in article 1, the non-contact IC label 20 is attached to a predetermined position in the room with the storage portion 17 open, and then the main body 11 and the lid body 12 are assembled and integrated. As a method for fixing the joint portion between the main body 11 and the lid 12, for example, a known method such as adhesion using a metal adhesive, mechanical fitting (insertion) by press-fitting, plastic deformation using a mold, or the like may be used. it can. On the other hand, metal welding methods such as gas, electricity, and laser with heating are not suitable because the non-contact IC label 20 stored in the storage unit 17 cannot withstand the temperature. Therefore, a method of fixing the joint portion in a state where the non-contact IC label 20 itself has a heat resistant temperature or lower is essential.

Although it is the shape of the accommodating part 17, it does not need to be the shape of this embodiment, and if it has the plane or curved surface on which the non-contact IC label 20 is affixed stably in the inner surface of an accommodating part, The shape may be such that it can be designed freely according to the specifications of the knife 10. Furthermore, as long as electrical interference with the non-contact IC label 20 does not occur, other functional parts (elements) such as an electronic circuit and a battery cell may be installed in the storage unit 17.
For the purpose of maintaining the function of the non-contact IC label 20 stored in the storage unit 17 over a long period of time, the interior of the storage unit 17 is filled with gas, liquid, foaming material, etc. according to the usage environment. May be. This is effective in a usage environment that constantly receives stress such as temperature, vibration, and impact.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. The same parts as those of the above-described embodiment are denoted by the same reference numerals, the description thereof will be omitted, and only different points will be described.
In addition to the configuration of the label-embedded article 1 of the first embodiment, the label-embedded article of the present embodiment is not shown, but the conductive plate (hole conductive member) and the range in which the conductive plate closes the communication hole 18 are adjusted. A hole support portion for supporting the conductive plate is provided so as to be possible.

In a previous experiment, if any one of the communication holes 18 is completely covered with a metal conductive plate having the same potential as the surface of the knife 10, communication between the non-contact IC label 20 and the data reading device R10 becomes impossible. I know that. In an additional experiment, it was found that communication was possible if the coverage area was reduced, but it did not reach the original communication distance.
From this, it becomes possible to suppress the communication function of the non-contact IC label 20 if the range in which the communication hole 18 is closed with the conductor can be adjusted. As a hole support portion that realizes this, although not shown in the drawing, for example, a member such as a clip that supports the conductive plate so as to be able to translate or rotate relative to the communication hole 18 is provided on the outer surface of the knife 10. Also good.
With this configuration, the communication distance between the non-contact IC label 20 and the data reading device R10 can be freely adjusted (suppressed).

In the present embodiment, the label-containing article 1 may include a conductive plate (antenna conductive member) and an antenna support that supports the conductive plate, although not illustrated.
The conductive plate is electrically connected to the surface of the knife 10 so as to have the same potential as the surface of the knife 10. The conductive plate is supported by the antenna support so that the range overlapping the antenna elements 27 and 28 can be adjusted when viewed in parallel with the thickness direction F.

When the conductive plate is brought into close contact with the antenna elements 27 and 28, communication between the non-contact IC label 20 and the data reader R10 becomes impossible, and when the distance between the antenna elements 27 and 28 and the conductive plate is widened, the non-contact IC label 20 And data reader R10 are known to be able to communicate. On the other hand, even if the range in which the antenna elements 27 and 28 and the conductive plate overlap in the thickness direction F is adjusted, the same result is obtained. As such an antenna support portion, one having the same configuration as the above-described hole support portion can be appropriately selected and used.
Even with this configuration, the communication distance between the non-contact IC label 20 and the data reader R10 can be freely adjusted.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. 10, but the same parts as those of the above-described embodiment will be denoted by the same reference numerals, the description thereof will be omitted, and only different points will be described.
As shown in FIG. 10, the label built-in article 3 of the present embodiment includes a sealing portion 41 that seals the communication hole 18 in addition to the configuration of the label built-in article 1 of the first embodiment. The sealing part 41 preferably has water resistance, chemical resistance, and insulation (non-conductive), and specifically, materials such as epoxy resin, phenol resin, polyimide resin, silicone resin, etc. Can be suitably used.

If the communication hole 18 is left as it is, dust, liquid, dust, gas, or the like enters from the communication hole 18 and allows the storage part 17 to enter. As a result, it is conceivable that the non-contact IC label 20 provided in the storage portion 17 may malfunction due to an electrical short, peeling of the adhesive portion, alteration of the constituent members, or the like. Therefore, it is preferable to seal the communication hole 18. When sealing the communication hole 18, as in the case of the above-described knife integration, a method of sealing in a state of the heat resistance temperature or less of the non-contact IC label 20 itself is essential.
With this configuration, it is possible to prevent dust and the like from entering the communication hole 18.

  By making the color of the sealing material used for the sealing part 41 the same color as the knife 10 or an approximate color, the presence of the communication hole 18 can be visually concealed, and the value of the label built-in article 1 is increased. You can also On the other hand, since the communication hole 18 is blocked by the conductor as described above, communication becomes impossible, so the color of the sealing material of the sealing portion 41 is completely different from that of the knife 10, for example, red, yellow, etc. In such a color, the presence of the communication hole 18 may be clarified to avoid a situation in which communication becomes impossible during use.

When the color of the sealing material of the sealing portion 41 is the same as that of the knife 10, the knife 10 does not know that the non-contact IC label 20 is built in from the appearance. Therefore, an indicator such as a figure or a character indicating that the non-contact IC label 20 is built in may be provided on the outer surface of the knife 10. Furthermore, an index indicating the location of the IC chip 25 built in the knife 10 may be provided on the outer surface of the knife 10 immediately above or near the IC chip 25.
In addition, since the communication hole 18 is provided in the vicinity of the display of these indicators, the indicator also serves as a display for preventing the communication hole 18 from being blocked.
In the case where a plurality of storage portions 17 are formed in the knife, an indicator may be provided for each storage portion 17. For example, “SC” may be used as an index for SCM (Supply Chain Management), and “ID” as an individual identification abbreviation for security.

Since the sealing portion 41 has water resistance, it is possible to prevent water or the like from entering the storage portion 17 from the outside through the communication hole 18.
Since the sealing portion 41 has chemical resistance, even when the knife 10 is immersed in the chemical, the sealing portion 41 becomes brittle due to the chemical and the like from the outside through the communication hole 18. Can be prevented from entering the storage portion 17.

(Fourth embodiment)
Next, although 4th Embodiment of this invention is described, the same code | symbol is attached | subjected to the site | part same as the said embodiment, the description is abbreviate | omitted, and only a different point is demonstrated.
In addition to the configuration of the label-embedded article 1 of the first embodiment, the label-embedded article of the present embodiment includes a metal film that covers the joint 46 of the main body 11 and the lid body 12 and is exposed to the outside. ing.

Since the knife 10 is made of a metal such as stainless steel or aluminum, the rust prevention, corrosion resistance, chemical resistance, wear resistance, and smoothness are the same as those of general articles (products) made of metal. And performance such as decoration is required. A metal film having desired performance such as rust prevention can be formed on the outer surface of the knife 10 by performing known processes such as electroplating, electroless plating, chemical conversion treatment, thermal spraying, and applying a thin film to the knife 10. it can.
When the main body 11 and the lid 12 are combined, a gap (boundary line) as shown by the joint 46 in FIG. If the target article does not have this gap as a problem, it can be left as it is. For example, in the case of a scalpel or tweezers used as a medical instrument, the gap on the metal surface is sanitary (cleaning, disinfection, sterilization). In order to completely fill the gap, it is preferable to form a metal film by subjecting the article to surface treatment.

The surface treatment and manufacturing method in the case where the gap between the joints is a problem will be described below.
Surface treatment such as electrolytic plating, electroless plating, and thermal spraying is called metal coating, and a metal film such as high hardness chromium can be formed on the surface of the article. Further, by forming this metal film, it is also possible to fill the gap between the joints.

First, a metal coating by electrolytic plating and a manufacturing method in that case will be described.
After the non-contact IC label 20 is pasted in a predetermined position in the hole portion 14, the lid body 12 is assembled to the main body 11. After that, the communication hole 18 is sealed, and in that state, immersed in an electroplating tub and energized, the plating metal is electrochemically deposited on the surface of the knife 10 to form a metal film. In this case, a known material that is not affected by the electrolytic solution is used as the sealing material of the sealing portion 41 to be used.

A metal coating by electroless plating and a manufacturing method in that case will be described.
After the non-contact IC label 20 is pasted in a predetermined position in the hole portion 14, the lid body 12 is assembled to the main body 11. Thereafter, the communication hole 18 is sealed with the sealing portion 41, the sealing portion of the sealing portion 41 is masked, and then immersed in a plating trough to chemically deposit a plating metal to form a metal film. In this case, a known material that is not affected by the electrolytic solution is used as the sealing material of the sealing portion 41 to be used.

The metal coating by thermal spraying and the manufacturing method in that case will be described.
A characteristic of metal coating by thermal spraying is that a metal film can be formed thick. In particular, it is a suitable method for completely filling the gap between the joint portions 46.
After the non-contact IC label 20 is pasted in a predetermined position in the hole portion 14, the lid body 12 is assembled to the main body 11. Thereafter, a metal film is formed on the surface of the knife 10 by thermal spraying. After forming the metal film, the communication hole 18 is sealed.

Thermal spraying is a method in which a metal material is melted with a heat source and sprayed from a nozzle together with a high-speed gas flow to form a metal film on the surface of the knife 10 as a target. Similarly, the temperature rises.
By forcibly sending cooling air from the communication hole 18 on the surface opposite to the surface to be sprayed, the temperature rise in the storage portion 17 can be suppressed, and the ambient temperature of the non-contact IC label 20 can be changed to the non-contact IC. The heat resistance temperature of the label 20 can be lowered. In the case of this method, by making the corner of the wall surface of the storage part 17 into a curved surface, the fed cooling air becomes a vortex and the non-contact IC label 20 can be cooled efficiently.

Thus, by forming a metal film on the surface of the knife 10, desired performance such as rust prevention can be added to the label built-in article 1.
The range in which the knife 10 is covered with the metal film is not particularly limited as long as the joint portion 46 is included.

(Fifth embodiment)
Next, although 5th Embodiment of this invention is described, the same code | symbol is attached | subjected to the site | part same as the said embodiment, the description is abbreviate | omitted, and only a different point is demonstrated.
When the article according to the label-embedded article 1 of the present invention is a medical instrument such as a knife or tweezers, a dry heat sterilization method is generally used as a sterilization method for the medical instrument. The dry heat sterilization method is a method of heating at 160 to 180 ° C. for a certain time in an oven for sterilization. If the article is a medical device, it must be able to withstand this temperature environment. In addition, it is essential to raise the heat resistance temperature (heat resistance) of the non-contact IC label 20 incorporated in the medical instrument, such as improvement of the heat resistance temperature of the non-contact IC label 20 by the above-described metal coating by thermal spraying.

In the non-contact IC label 20 of the present embodiment, the target upper limit temperature is set to 200 ° C. in order to withstand the dry heat sterilization method described above. The purpose is that there is no deformation, alteration, peeling, or deterioration of communication performance under this upper limit temperature. However, the communication performance under the upper limit temperature is excluded from this embodiment, and communication with a data reading device or the like is not performed under the upper limit temperature.
The heat resistance of the non-contact IC label 20 was increased by raising the heat resistance temperature of each component without changing the basic structure. The contents will be described in detail below.

  In the non-contact IC label 20 of the first embodiment, the impedance matching circuit portion 26 and the antenna elements 27 and 28 are formed on the base material 30 by pattern printing with silver paste ink. However, in the environment of 200 ° C., which is the upper limit of the use temperature described above, the heat resistance temperature of the members constituting the impedance matching circuit section 26 and the antenna elements 27 and 28 is too low, so that this configuration cannot be used at all. From this, the heat resistance temperature of the constituent members of the impedance matching circuit section 26 and the antenna elements 27 and 28 shown below was raised.

In the said 1st Embodiment, although the base material 30 was formed with PET film, by making the base material 30 into film materials whose heat-resistant temperature, such as a polyimide and polyetherimide, exceeds 200 degreeC, of the base material 30 The heat-resistant temperature can be raised.
However, since the dielectric constant value of the material changes when the material of the base material 30 changes, it is necessary to optimize the impedance matching circuit unit 26.

  In the first embodiment, the impedance matching circuit unit 26 and the antenna elements 27 and 28 are formed by pattern printing with silver paste ink, but these are formed by etching an aluminum thin film or a copper thin film. Thus, the upper limit of the operating temperature of the impedance matching circuit section 26 and the antenna elements 27 and 28 can be raised to 200 ° C.

In the first embodiment, the bumps of the IC chip 25 and the impedance matching circuit unit 26 are connected to the bumps and the impedance matching circuit unit 26 by using the flip chip mounting bonding method using the bonding material ACP. The circuit unit 26 is electrically connected.
However, with this mounting method, the electrical connection between the IC chip 25 and the impedance matching circuit unit 26 cannot be guaranteed under the environment of 200 ° C., which is the upper limit of the operating temperature, because the heat resistant temperature of the ACP is too low.

By using an ultrasonic welding method (metal welding method by ultrasonic bonding) that does not use a bonding material having a low heat-resistant temperature such as ACP at all, the bumps of the IC chip 25 and the impedance matching circuit unit 26 are ultrasonically connected to these. Different metals can be welded together.
Therefore, by using this bonding method, electrical connection reliability in an environment of 200 ° C., which is the upper limit of the use temperature, can be obtained.

The magnetic sheet 21 is formed of a composite material of magnetic particles or magnetic flakes and plastic or rubber. The upper limit of the use temperature of the magnetic sheet 21 used in the first embodiment is 85 ° C. (manufacturer recommended value). Among the specific physical property values of the magnetic sheet 21, parameters that greatly affect the antenna characteristics (antenna sensitivity) are magnetic permeability and magnetic loss values, and one of the dielectric constant and dielectric loss values is smaller than that. I know that.
The magnetic permeability and magnetic loss values of the magnetic sheet 21 are determined by the modeling, direction, density, etc. of the magnetic particles or magnetic flakes used. On the other hand, the values of dielectric constant and dielectric loss are determined by the dielectric constant and dielectric loss of the binder (binder) itself, in addition to the shape, direction and density of the magnetic particles or magnetic flakes.

The magnetic particles or magnetic flakes of the magnetic sheet 21 are left as they are, and only the binder is changed to a heat-resistant binder whose heat-resistant temperature exceeds 200 ° C. such as silicone, fluorine-based, epoxy-cured, polyethersulfone-based, and polyimide (polyamide) -based. By doing so, the magnetic sheet 21 itself can be a heat-resistant magnetic sheet. However, by changing the binder used, the values of the dielectric constant and dielectric loss of the magnetic sheet 21 also change.
However, these two parameters have little influence on the antenna characteristics as described above, and by optimizing the impedance matching circuit unit 26, the communication performance of the non-contact IC label 20 accompanying the change to the heat-resistant binder is improved. There seems to be almost no decline.
As the adhesive layer 23, an acrylic or silicone material having a heat resistant temperature exceeding 200 ° C. can be suitably used.

As described above, the non-contact IC label 20 with the heat countermeasure is not subjected to a communication experiment with the reading device, but it is considered that the result of the communication distance almost the same as that of the non-contact IC label 20 of the above-described embodiment is obtained.
Therefore, by increasing the heat-resistant temperature of all members constituting the non-contact IC label 20, particularly the magnetic sheet 21, the impedance matching circuit unit 26, and the antenna elements 27 and 28, the upper limit of the use temperature is 200 ° C. A non-contact IC label 20 that can withstand the environment can be produced.

Next, what is assumed when the article with a built-in label 1 of the present invention is commercialized will be described.
Since the label-embedded article 1 of the present invention is a radiating antenna, the label-embedded article 1 itself is commercialized and packaged using a general non-conductive packaging material such as paper, hard paper, cardboard, or plastic. If so, the information on the non-contact IC label of the internal article can be read from the outside.
If this article is moved (distributed) on a general SC (supply chain) and the article is not secure, the information on the non-contact IC label of the article will be displayed in the SCM logistics management. Since it can be used as it is, a contactless IC label dedicated to logistics management is not required.

  On the other hand, if this article has security, it is necessary to take a measure to prevent the information on the non-contact IC label of the inside article from being read from the outside in a packing form. For example, there is a method of preventing activation of a non-contact IC label by reflecting an electromagnetic wave radiated from a data reading device by using a conductive packaging material.

  By covering the communication hole with a conductive material, the function of the non-contact IC label of the article can be temporarily stopped. For example, by inserting and inserting a conductive cylindrical film having a metal vapor deposition film formed on the entire upper surface or part of the heat shrinkable film so as to cover the communication hole of the article, heat is applied to shrink the film. Alternatively, a method in which the film is closely held on the surface of the article and the communication hole is closed may be used. To re-activate the function of the non-contact IC label, the heat-shrinkable film may be peeled off. The function of the non-contact IC label can be temporarily stopped at a low cost.

  Since this article can be provided with a plurality of storage parts, for example, the article is provided with two storage parts having one non-contact IC label, one storage part is used for security, and the other storage part is SCM. For the purpose of (distribution management), only the communication hole of the storage part for security is closed with the above-described conductive cylindrical film, and the communication hole of the storage part for SCM is left as it is. As a result, the information on the non-contact IC label for security cannot be read and only the tag information of the non-contact IC label for SCM can be read. In particular, only the function of a specific non-contact IC label can be temporarily stopped.

The article itself has a shape that resonates with the frequency of the communication electromagnetic wave.For example, when the article is an automobile engine mounting part, the article and the engine body are attached by attaching the article to a metal engine body. As a result, the resonance frequency seen from the non-contact IC label may be shifted and reading may be impossible.
With SCM traceability based on current non-contact IC label information, when an article with a non-contact IC label leaves the management of the SCM and passes to the end user, the function of the non-contact IC label attached to the article is enforced. In some cases, a kill tag (Kill Tag) for permanently stopping is performed. This is also because the information on the non-contact IC label for managing the SCM becomes unnecessary from the moment when the article reaches the end user, and the subsequent trouble is prevented.

The engine room has a metal body, chassis frame, and engine, so electromagnetic waves emitted from data readers such as handy readers are reflected by these metal surfaces, creating a complex multipath. Therefore, it is said that reading (specification) of an article provided with a non-contact IC label cannot be stably performed.
From the above, if the management range of SCM traceability based on the information of the non-contact IC label possessed by the article is from the time of factory shipment until it is attached to the engine, the article can be attached to the engine body as described above. I think it will not be a problem if it becomes unreadable.
When trouble occurs due to the article, the article can be removed from the engine body to read the non-contact IC label, and information on the non-contact IC label of the article can be read. If it is a legitimate article, the cause of failure can be analyzed from the information of the non-contact IC label, and if it is a counterfeit fake article, it cannot be read or the information of the non-contact IC label is unregistered information. Therefore, authenticity determination is also possible.

  On the other hand, the opposite case to the above case is also conceivable. That is, even if the shape of the article is extremely short even in the longitudinal direction D, the inherent resonance frequency of the article rises and deviates from the frequency of the communication electromagnetic wave, thereby degrading the function as a radiating antenna. However, even with an article having such a shape, by attaching the article to the main body, the article and the main body are integrated, and as a result, the article and the main body function as a radiating antenna. It may be. In this case, needless to say, the size of the main body to be attached is limited.

The label built-in article 1 of the present invention has a structure that is strong against dropping.
The reason is that if the shape of the storage portion 17 is maintained, the non-contact IC label 20 itself is not damaged, and the weight of the non-contact IC label 20 itself incorporated in the knife 10 is as follows. Since it is very light and is affixed to the hole 14 by the adhesive layer 23 provided on the other surface 21b of the magnetic sheet 21, the non-contact IC label 20 itself is not peeled off from the hole 14 due to an impact caused by dropping. From that.

  The main body 11 itself may have a purpose and function as an article. In this case, the other one or more divided members (attachments) are provided with a non-contact IC label 20, and by combining them, one or more storage portions 17 are formed in the main body 11, One or more functions of the non-contact IC label 20 may be added as an option.

The female 10 of the present invention is electrically one conductor because its main body 11 is made of metal. For this reason, when an electrical shock such as a surge is applied from the outside, the surge current flows just inside the knife 10 in the same manner as a normal electric wire, so that the built-in non-contact IC label 20 is hardly damaged. It is not considered.
The non-contact IC label 20 is affixed to the storage portion 17 with an insulating adhesive, and further, the IC chip 25 and the antenna elements 27 and 28 are provided on the magnetic sheet 21 having a high internal resistance. Even if the non-contact IC label 20 is used alone, it can be said that the layer structure is strong against electric shock such as surge.

  Since the non-contact IC label 20 is disposed in the sealed storage portion 17, there is no need for any protective material and appearance (visual value) as required for a general non-contact IC label (inlet). Therefore, it can be in a form specialized for the communication function, cost, and the like.

  In the above-described embodiment, the antenna of the non-contact IC label 20 is a dipole antenna. However, as long as the female 10 functions as a radiating antenna of the non-contact IC label 20, any shape and form of antenna can be used. It doesn't matter. For example, it may be a grounded monopole antenna in which one of the antenna elements 27 and 28 is electrically connected to the female 10 by a coupling method such as direct connection (coupling) or capacitive coupling. Good communication is obtained with the grounded monopole antenna prototyped by the inventors. In the case of this antenna, since only one radiation antenna is required, the non-contact IC label can be reduced in size. The application range of the target metal article is expanded by downsizing, and further, the magnetic sheet 21 can be made small, so that the effect of reducing the manufacturing cost of the non-contact IC label 20 can be expected.

  The impedance matching circuit unit 26 of the embodiment occupies a considerable area when viewed in the thickness direction F. The reason is due to the internal impedance of the IC chip 25 (the imaginary part is large). Since the impedance matching circuit unit 26 can be made small by changing to the IC chip 25 having a small imaginary part, as a result, the non-contact IC label 20 itself can be made small. From the above, it becomes possible to significantly increase the target items of the metal appliances and metal parts targeted by the present invention.

The first to fifth embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the configuration does not depart from the gist of the present invention. Changes are also included. Furthermore, it goes without saying that the configurations shown in the embodiments can be used in appropriate combinations.
For example, in the first to fifth embodiments, the communication hole 18 is formed in a slit shape. However, when the knife 10 is used in an environment with little dust or the like, the communication hole 18 may be formed in a shape other than a slit such as a circle or an ellipse in plan view. The shape of the communication hole can be freely designed according to the specifications of the knife 10.

Like the label built-in article 5 shown in FIG. 11, the width of the upper surface 13a sandwiching the hole 14 in the main body 11 may be set wider than that of the label built-in article 1 of the first embodiment.
When the communication hole 18 receives an external force in the thickness direction F, the non-contact IC label 20 disposed in the storage portion 17 is not damaged, but the sealing portion 41 may be crushed. If the sealing material of the sealing part 41 has flexibility, there is no problem. However, when the sealing part 41 is formed of a material having no flexibility, the sealing part 41 is plastically deformed and returns to its original shape. Therefore, a gap is generated between the sealing portion 41 and the communication hole 18, and the sealing effect is lost.
Moreover, when the clearance gap of the communicating hole 18 is large, it is also considered that the base part of the main body 11 causes plastic deformation due to external stress and impact and does not return to its original state. In this case, the sealing portion 41 remains in a crushed state. The same applies to the case where a strong external stress or impact is applied only to the base portion of the lid 12.

  As a countermeasure for these, if the sealing material of the sealing portion 41 to be used has an appropriate hardness, the upper surface of the lid 12 can be set wider by setting the width of the upper surface 13a wider as shown in FIG. It is possible to disperse the external stress and impact received from the bottom surface of the lid 12 and the top surface 13a of the main body 11. By setting the hardness and area of the sealing material of the sealing portion 41 according to the assumed external stress and the amount of impact, the deformation amount of the lid 12 and the sealing portion 41 can be reduced.

In the first to fifth embodiments, it is assumed that the entire article is a metal member and a storage portion is formed inside the article. However, a part of the article may be a metal member and the remaining part may be a member formed of a material other than metal, and the storage portion may be formed inside the metal member.
In addition, the metal member is not limited to being formed entirely of metal, and a portion exceeding 50% by weight ratio of the metal member may be formed of solid metal. The part other than the metal in the metal member can be formed of resin, ceramics, or the like.
The knife 10 is divided into two divided members. However, there is no limitation on the number of divided members into which the knife 10 is divided, and the knife 10 may be divided into three or more divided members, or the knife 10 may be composed of one member that is not divided into divided members.

In the first to fifth embodiments, the article is a knife. However, the articles are not limited to this, and small metal utensils such as the above-mentioned machine tools, medical utensils, cooking utensils, etc., and small parts such as machine parts, automobile parts, electrical parts, building parts, piping parts, etc. Metal parts and the like.
The shape of the article may be any shape as long as the article itself functions as a radiation antenna for the non-contact IC label 20. The shape of the article mentioned here includes the thickness. Since the target electromagnetic waves for communication are the SHF and UHF bands, the thickness of the metal article may be about 1 μm at the thinnest because of its frequency characteristics (skin effect). The present invention can also be applied to an article having a low mechanical strength such as a metal article formed as a metal film. In this case, needless to say, it is a premise that the article is not subjected to external stress or impact.

1, 3, 5 Articles with built-in labels (products with built-in non-contact IC labels)
10 Female (article)
11 Main body (first divided member)
12 Lid (second divided member)
12a Bottom surface (second connection surface)
13a Upper surface (first connection surface)
DESCRIPTION OF SYMBOLS 17 Storage part 18 Communication hole 20 Non-contact IC label 21 Magnetic sheet 21a One side 21b The other side 25 IC chip 26 Impedance matching circuit part (circuit part)
30 Substrate 30a Main surface 41 Sealing portion 46 Joining portion F Thickness direction R10 Data reading device

Claims (17)

A non-contact IC label built-in article comprising an article having a metal member and a non-contact IC label built in the metal member,
Inside the metal member, a storage part that stores the non-contact IC label, and a communication hole that connects the storage part and the outside are formed,
The non-contact IC label is:
A magnetic sheet;
An IC chip and an antenna unit provided on one surface of the magnetic sheet and electrically connected to each other;
The non-contact IC label built-in article, wherein the other surface of the magnetic sheet is attached to the inner surface of the storage portion.   The non-contact IC label built-in article according to claim 1, wherein the communication hole is formed in a slit shape.   The article with a built-in non-contact IC label according to claim 1 or 2, wherein the communication hole is sealed with a non-conductive sealing portion.   The said sealing part has water resistance, The non-contact IC label built-in article as described in any one of Claim 1 to 3 characterized by the above-mentioned.   The non-contact IC label built-in article according to any one of claims 1 to 4, wherein the sealing portion has chemical resistance.   The article with a built-in non-contact IC label according to claim 1 or 2, wherein the magnetic sheet and the antenna section have heat resistance. A substrate formed into a film,
A circuit unit for electrically connecting the IC chip and the antenna unit,
The said antenna part and the said circuit part are provided in one surface of the said magnetic sheet in the state arrange | positioned at the main surface of the said base material, The Claim 1 characterized by the above-mentioned. Non-contact IC label built-in article.   The non-contact IC label built-in article according to any one of claims 1 to 7, wherein an index indicating a position where the non-contact IC label is attached is provided on an outer surface of the metal member. . A conductive member for holes;
A hole support portion for supporting the hole conductive member such that a range in which the hole conductive member blocks the communication hole is adjustable;
The non-contact IC label built-in article according to any one of claims 1 to 8, characterized by comprising: An antenna conductive member;
A support portion for the antenna that supports the conductive member for the antenna so that the range overlapping the antenna portion when the conductive member for the antenna is viewed in the thickness direction of the magnetic sheet can be adjusted;
The non-contact IC label built-in article according to any one of claims 1 to 9, further comprising: The metal member can be divided into a first divided member and a second divided member,
When the first divided member and the second divided member are assembled, the storage portion and the communication hole are formed by the edge of the first divided member and the edge of the second divided member. The non-contact IC label built-in article according to any one of claims 1 to 10. A first connection surface is formed on the first divided member,
A second connection surface is formed on the second divided member,
The non-contact according to claim 11, wherein the first divided member and the second divided member are assembled by bringing the first connecting surface and the second connecting surface into contact with each other. Products with built-in IC labels.   13. A non-contact IC label built-in according to claim 11 or 12, further comprising a metal film that covers a portion exposed to the outside, which is a joint portion between the first divided member and the second divided member. Goods. When viewed in the thickness direction of the magnetic sheet, the metal member is formed in an elongated shape,
The non-contact IC label built-in article according to any one of claims 1 to 13, wherein the magnetic sheet has a thickness of 100 µm or more, and the metal member has a width of 10 mm or less. When viewed in the thickness direction of the magnetic sheet, the metal member is formed in an elongated shape,
14. The non-contact IC label-containing article according to claim 1, wherein the magnetic sheet has a thickness of 200 μm or more and the metal member has a width of 25 mm or less. When viewed in the thickness direction of the magnetic sheet, the metal member is formed in an elongated shape,
14. The non-contact IC label-containing article according to claim 1, wherein the magnetic sheet has a thickness of 300 μm or more and the metal member has a width of 50 mm or less.   The non-contact IC label built-in article according to any one of claims 1 to 16, wherein a radio wave system is used as a communication system with the data reading device.

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