JP2007286214A - Wearing band - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wearing band for hardly breaking an inlet even when stress is applied from the outside by lessening a physical disorder when being worn on a human body. <P>SOLUTION: The wearing band is formed in the form of a ring mountable on a part of the human body by mounting the inlet 1 transmitting information recorded on an IC chip 3 by wireless by an antenna. The band comprises an RFID tag 6 including the inlet by a resin-made hard film 4, and an elastic body formed in the form of the ring by including the RFID tag 6. The RFID tag 6 is composed so that strain in a tensile direction per unit tension force decreases more than the elastic body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wearing band to be worn on a human body, and more particularly to a wearing band suitable for wearing a part of a human body and identifying an individual.

  Conventionally, in order to identify an individual, a wearing band (such as a wristband) worn on a part of a human wrist or ankle has been widely used. For example, as a medical wearing band, a wearing band in which unique information for identifying a person in order to identify a patient is recorded. If such a wearing band is wound around a patient's wrist, ankle, or the like, the person can be surely confirmed and appropriate medical treatment can be performed.

In addition, the identification information recorded on the wearing band includes not only information such as a barcode printed on the wearing band and a visually recognizable number, but also a non-contact readable / writable inlet (IC chip and antenna) that can be applied systematically. ) Is used.
The inlet is used as an RFID (Radio Frequency IDentification) tag provided with a material for protection around the inlet.

  The inlet included in the RFID tag has a function of transmitting ID (IDdentification: identification information) or the like recorded on the IC chip to the outside by RF (Radio Frequency). As described above, such an inlet is composed of a small IC chip that records information and a small antenna that wirelessly transmits information recorded on the IC chip to the outside. For example, the inlet has a structure in which a fine IC chip having a width of 0.4 mm, a depth of 0.4 mm, and a height of about 0.1 mm is attached in the vicinity of a central portion of a small antenna having a length of about 52 mm and a width of about 3 mm. Therefore, if the inlet is held over the inlet reader, information (for example, personal identification information) recorded on the IC chip can be easily read without contact.

  A wearing band equipped with an RFID tag that contains such an inlet can be used for a long time because it cannot be removed until it is discharged unless it is intentionally removed once attached to the patient's wrist or ankle. It is required that strength and moisture resistance can be maintained and that the wrist and ankles are soft and less uncomfortable. That is, the wearing band needs to have strength, moisture resistance, and flexibility that can be withstood even if it is wound around a part of the body and used for a long time.

In order to meet such demands, as a conventional mounting band, a soft and strong nylon layer such as nylon 6 is used as an intermediate base material, and a lightweight and flexible polyethylene (PE) is used as the upper surface base material. In addition, there is a three-layer structure that employs a lightweight and flexible polyethylene base material that is embossed on the back surface base material that uses the copolymer and that directly touches human skin. Such a wearing band can withstand long-term use even if it is wound around the wrist or ankle of the human body, and it is lightweight and soft on the surface, so there is little discomfort and personal information can be managed reliably. (For example, refer to Patent Document 1).
Japanese Patent Laying-Open No. 2005-283392 (see paragraph numbers 0023 to 0042 and FIGS. 1 to 3)

  However, the conventional mounting band described above is formed in a long and narrow band shape, so that a protrusion is inserted into a desired hole and wound around the arm (that is, the original shape is not a ring shape) So it takes time to attach it to the arm. Moreover, since the back surface base material of the part which touches a human skin directly is a polyethylene (PE) base material, when it sweats, it adheres to skin and receives a certain amount of strangeness.

  Further, since the RFID tag is fixed to the surface of the nylon layer, there is a possibility that the IC chip, the antenna or the like may be broken by bending the mounting band. Further, the RFID tag may be peeled off from the surface of the nylon layer due to a difference in expansion coefficient between nylon and the RFID tag.

  The present invention has been made in view of the above problems, and an object thereof is to provide a mounting band that is less uncomfortable when mounted on a human body and that the inlet is not easily broken even when stress is applied from the outside. And

  The present invention was devised to achieve the above object, and is equipped with an inlet for wirelessly transmitting information recorded on an IC chip by an antenna, and is formed in a ring shape that can be attached to a part of a human body. The mounting band includes an RFID tag including an inlet with a resin hard film, and an elastic body formed in a ring shape including the RFID tag. The RFID tag is characterized in that the strain in the tensile direction per unit tensile force is smaller than that of the elastic body.

  According to the present invention, it is possible to provide a mounting band that is less uncomfortable when mounted on a human body and that is difficult to break the inlet even when stress is applied from the outside.

<Outline of the invention>
Hereinafter, the wristband according to the best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described in detail with reference to the drawings, with a suitable example. Therefore, the outline of the wristband of this embodiment will be described.

  The wristband according to the present embodiment forms a ring-shaped band using an elastic material such as silicone rubber or natural rubber, and a material having a lower expansion / contraction rate than the elastic material inside the ring-shaped elastic material It is the structure which mounted the inlet included with the hard film. The expansion / contraction rate is the strain in the tensile direction per unit tensile force, and the strain is the ratio of the elongation in the tensile direction to the original length.

In other words, the hard film is used because even when the entire silicone rubber expands and contracts, the portion of the silicone rubber that contains the hard film does not expand or contract, which makes it difficult to apply force to the inlet inside the hard film. This is to prevent the inlet from being destroyed without being added.
In addition, for example, if the material of the hard film originally has a large friction with the silicone rubber, or if the surface of the hard film is roughened, the silicone rubber A large frictional force acts between the hard films, so that the silicone rubber around the hard film can be prevented from extending so much.

  In the present embodiment, an RFID tag including an inlet is formed with a hard film, the RFID tag is inserted into a ring-shaped mold, and a solution of an elastic material such as silicone rubber is injected into the mold to be processed. .

  The wristband molded in this way can be easily attached to the body by inserting a wrist or ankle into it while stretching an elastic material (hereinafter referred to as silicone rubber) formed in a ring shape. It can be easily removed from the body unless it is intentionally removed. Further, since the part that contacts the skin is made of silicone rubber, there is little uncomfortable feeling when the wristband is worn, and there is no possibility that the part that contacts the skin will be in close contact with sweat or the like. Furthermore, even if the silicone rubber is bent, the RFID tag is not bent very much due to the rigidity of the hard film, so that the inlet mounted inside the RFID tag is less likely to be damaged.

  When the entire silicone rubber expands and contracts, the portion of the silicone rubber that does not include the RFID tag is easily expanded and contracted, but the portion that includes the RFID tag hardly expands or contracts because of its high strength. Therefore, the antenna and IC chip inside the RFID tag are less likely to be destroyed by a tensile force when the silicone rubber ring is attached to the human body, compared to a case where the antenna or IC chip is not included in the hard film. Even if the expansion coefficient of the silicone rubber and RFID tag is different, if the temperature changes, the portion of the silicone rubber that contains the RFID tag will hardly expand or contract, so the IC chip or antenna will not be stressed much. Don't join.

  Hereinafter, the wristband according to the present embodiment will be described in detail with reference to the drawings, taking as an example the case where silicone rubber is used as the elastic material. FIG. 1 is a configuration diagram of an inlet mounted on the wristband of the present embodiment, in which (a) is a top view, (b) is a side view, and (c) is an exploded view.

  As shown in FIGS. 1A and 1B, the inlet 1 is provided with an elongated electric conductor 2 formed of a metal foil such as an aluminum foil on a base film 20, and an upper surface of the electric conductor 2. Is constructed by mounting the IC chip 3. The electric conductor 2 and the base film 20 are collectively referred to as an antenna 21.

  The electric conductor 2 forms a dipole antenna with a length of λ / 2 in the longitudinal direction, where λ is a wavelength of a use frequency of radio waves transmitted and received. For example, when the use frequency of radio waves transmitted and received between the electric conductor 2 and an inlet reader (not shown) is 2.45 GHz, the length in the longitudinal direction of the electric conductor 2 is about 52 mm. The length of the electric conductor 2 in the width direction is not particularly limited. For example, even if the IC chip 3 having a width of about 0.4 mm, a depth of 0.4 mm, and a height of about 0.1 mm is mounted, there are some differences. It suffices if the margin has a certain width. As an example, when the length in the longitudinal direction of the electric conductor 2 is about 52 mm, the length in the width direction is about 3 mm. If the frequency used is 13.56 MHz, the length in the longitudinal direction of the electric conductor 2 is longer than 52 mm, but the width is not particularly limited.

  Furthermore, the thickness of the electric conductor 2 is about several tens of microns, which is the thickness of a normal metal foil. However, if the thickness is such that the electric conductor 2 is not cut or broken by a normal tensile force, the thickness is particularly large. Is not limited. Alternatively, the electric conductor 2 may be formed by metal vapor deposition on a thin resin substrate.

  Moreover, the inlet 1 used by this embodiment is a passive type. The inlet 1 receives a radio wave from the inlet reader (not shown) by the electric conductor 2 and supplies a potential difference generated in the longitudinal direction of the electric conductor 2 to the IC chip 3 from a power feeding unit (described later) in the central portion of the electric conductor 2. Then, the IC chip 3 operates due to this potential difference.

  As shown in FIG. 1 (c) (see FIG. 1 (a) as appropriate), the central portion of the electric conductor 2 has a hook shape for impedance matching between the IC chip 3 and the electric conductor 2. Slits 2a and stubs 2b are formed. Since the electrode 3c of the IC chip 3 is connected to the power feeding portion 2c of the electric conductor 2 across the slit 2a, the width of the slit 2a is narrower than the terminal interval of the IC chip 3 (interval of the electrode 3c). In the present embodiment, the portion of the stub 2b formed by forming the slit 2a is connected in series between the electric conductor 2 and the IC chip 3, so that the stub 2b works as an inductor component related to the antenna input impedance. By this inductor component, the capacitive component of the input impedance of the IC chip 3 is canceled, and the antenna input impedance and the input impedance of the IC chip are matched.

Since the input impedance of the electric conductor 2 changes due to the influence of the surrounding environment of the electric conductor 2, for example, the dielectric constant of the surrounding silicone rubber or hard film, the length of the slit 2a (stub 2b) can be changed. Corresponding to the surrounding environment, impedance matching between the IC chip 3 and the electric conductor 2 can be achieved.
The IC chip 3 operates with the electric power supplied from the electric conductor 2 to change the input impedance of the IC chip 3 at a timing according to the ID information stored therein. Then, the reflectivity at which the IC chip 3 reflects radio waves supplied from the inlet reader changes according to the change in the input impedance of the IC chip 3. Therefore, the inlet reader can receive the radio wave reflected by the IC chip 3 and read the ID from the change of the received radio wave.

  2A and 2B are configuration diagrams of an RFID tag including the inlet shown in FIG. 1 with two transparent hard films. FIG. 2A is a top view and FIG. 2B is a side view. As shown in FIGS. 2 (a) and 2 (b), the inlet 1 constituted by the base film 20, the electric conductor 2, and the IC chip 3 is bonded to the resin hard film 4 at the top and bottom to form an RFID tag 6. It is configured. That is, the inlet 1 is included in the hard film 4.

  In this way, the RFID tag 6 enclosed by the hard film 4 protects the base film 20, the electric conductor 2 and the IC chip 3 constituting the inlet 1 inside thereof in a strength, moisture and dust proof manner. Further, the RFID tag 6 is generated by the hard film 4 so that the frictional force from the silicone rubber is not directly applied to the base film 20, the electric conductor 2, and the IC chip 3, that is, by expansion and contraction of the silicone rubber. The inlet 1 is protected so that force is not directly transmitted to the electric conductor 2 or the like.

  FIG. 3 is a perspective view of a wristband configured by mounting the RFID tag shown in FIG. 2 inside a ring-shaped silicone rubber. As shown in FIG. 3, the wristband 8 has a configuration in which an RFID tag 6 is mounted inside a ring-shaped silicone rubber 7. That is, the RFID tag 6 configured as shown in FIG. 2 is inserted near the center of the ring-shaped mold (not shown) in the thickness direction, and a transparent silicone rubber 7 solution is injected into the mold. At this time, since the injection temperature of the solution of the silicone rubber 7 is about 100 ° C., the hard film 4 and the inlet 1 inside the RFID tag 6 (that is, the base film 20, the electric conductor 2, and the IC chip 3) are attached. There is no risk of thermal destruction.

  Next, when the mold is removed after the solution of the silicone rubber 7 is cooled, a ring-shaped wristband 8 as shown in FIG. 3 is formed. The wristband 8 formed in this way is, for example, a ring-shaped cylindrical band having a thickness of 5 mm, a width of 10 mm, and an inner diameter of about 50 mm. Therefore, the ring-shaped wristband 8 as shown in FIG. 3 can be easily attached to the human body by expanding the ring and passing a wrist or the like through the wristband 8.

  The silicone rubber 7 is an elastic rubber made of a polymer having a repeating siloxane bond (—Si—O—) as a main chain and an alkyl / aryl group as a side group. Accordingly, the silicone rubber 7 is excellent in heat resistance, water repellency, electrical insulation, chemical resistance, aging resistance and the like due to such a molecular structure. In general, silicone can be arbitrarily changed into liquid, grease, rubber, resin, etc. depending on the degree of polymerization of the polymer, the type of side groups, the degree of crosslinking of the main chain, etc. The silicone rubber 7 used is optimally configured in consideration of their chemical characteristics. That is, the silicone rubber 7 used in the present embodiment is configured so as to exhibit good rubber-like elasticity by moderately crosslinking a linear polydimethylsiloxane having a high polymerization degree or a copolymer thereof. It is.

  4 is an enlarged view of a part (part A) of the wristband shown in FIG. 3, where (a) is a cross-sectional view seen from the direction of arrow B in FIG. 3, and (b) is an arrow C in FIG. It is the top view seen from the direction. That is, as shown in the cross-sectional view of FIG. 4A, in the ring-shaped wristband 8, the RFID tag 6 is disposed near the center of the transparent silicone rubber 7 in the thickness direction. Is mounted with an inlet 1 comprising a base film 20, an electric conductor 2 and an IC chip 3. That is, as shown in the top view of FIG. 4B, since the RFID tag 6 is arranged in parallel with the circumferential direction (that is, the longitudinal direction) of the silicone rubber 7, the RFID tag 6 The inlet 1 inside is also arranged in parallel with the circumferential direction (longitudinal direction) of the silicone rubber 7.

  When the wristband 8 configured as described above is worn on a part of the human body (for example, wrist), the directing direction of the electric conductor 2 can be set in the circumferential direction of the arm, which is not illustrated. If the circumferential direction of the wristband 8 is detected by the inlet reader, the information on the IC chip 3 can be easily read. Also, new information can be written to the IC chip 3 in the wristband 8 by an inlet reading / writing device (not shown).

  In addition, if personal identification information for specifying a patient is written in the IC chip 3 of the inlet 1 in advance, the information in the inlet 1 is read when the patient is examined, so that proper medical care can be performed without mistaking the patient. It is also possible to record the progress of medical treatment.

  Further, the wristband 8 configured as shown in FIG. 4 can record or rewrite a large amount of information on the IC chip 3 when the IC chip 3 is a RAM (Random Access Memory) type. In a hospital, all past medical history information of a patient can be recorded in the inlet 1 to be used for comprehensive medical treatment, or information can be systematically transmitted and received between a plurality of hospitals for medical cooperation. Of course, this wristband 8 can also be used in various fields other than medical treatment.

  In addition, the wristband according to the present embodiment is not limited to a hospital, and each person can be properly managed in a facility that manages a large number of users such as nursing homes and nursing homes, and the wristband is used. Does not make people feel uncomfortable. Therefore, the wristband of this embodiment can be used effectively in a facility that manages a large number of users. In addition, the wristband according to the present embodiment can also be used in facilities that accommodate inmates who are on the way to rehabilitation.

  This is the end of the description of the embodiments, but the aspects of the present invention are not limited to these. For example, in the present embodiment, the wristband that fits on the wrist is taken as an example of the wearing band, but other bands such as an ankle band that fits on the ankle may be used. In addition, the specific configuration can be changed as appropriate without departing from the spirit of the present invention.

It is a block diagram of the inlet mounted in the wristband of this embodiment, (a) is a top view, (b) is a side view, (c) is an exploded view. It is a block diagram of the RFID tag which included the inlet shown in FIG. 1 with two transparent hard films, (a) is a top view, (b) is a side view. FIG. 3 is a perspective view of a wristband configured by mounting the RFID tag shown in FIG. 2 inside a ring-shaped silicone rubber. FIG. 4 is a partially enlarged view of the wristband shown in FIG. 3, (a) is a cross-sectional view, and (b) is a top view.

Explanation of symbols

1 Inlet 2 Antenna 2a Slit 3 IC Chip 4 Hard Film 6 RFID Tag 7 Silicone Rubber 8 Wristband

Claims (2)

It is an attachment band that is equipped with an inlet that wirelessly transmits information recorded on an IC chip through an antenna and is formed in a ring shape that can be attached to a part of a human body,
An RFID tag including the inlet by a resin hard film;
An elastic body formed in a ring shape including the RFID tag,
The RFID tag is configured so that strain in a tensile direction per unit tensile force is smaller than that of the elastic body.   The wearing band according to claim 1, wherein the elastic body is silicone rubber.

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