JP2004295907A - Non-contact communication type information carrier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-contact communication type information carrier low in cost with excellent manageability and productivity. <P>SOLUTION: This non-contact communication type information carrier is composed of a core piece 11 constituted by mounting an IC chip 1 with an antenna coil 3 integrally formed on one face, into a recessed part 6 of a core piece body 5; a nonmetallic spacer member 14 fitting the core piece 11 into a fitting part 16 provided at a center part, to hold the core piece 11; and a metallic weight applying member 15 arranged to surround the outer periphery of the spacer member 14 and connected. The antenna coil 3 and the metallic weight applying member 14 are spaced through the spacer member 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a non-contact communication type information carrier including a semiconductor device in which a non-contact communication antenna is formed integrally with an IC chip.

Conventionally, for example, an IC chip integrally formed with an antenna coil is mounted on a component or product for inventory management of components or products, or an antenna is used for applications such as entry / exit management and commuter passes. There has been proposed a personal identification card in which an IC chip integrally formed with a coil is embedded in a card body.
JP-A-2002-7989

  However, the IC chip formed integrally with the antenna coil is hard, and when the IC chips come into contact with each other, the coil-formed surface is easily damaged. Therefore, the IC chip cannot be packed in a bag or supplied by a parts feeder, so that it has to rely on expensive material handling. Absent.

  In addition, an IC chip integrally formed with an antenna coil is extremely thin (about 0.2 mm to 0.6 mm in thickness) and has high brittleness, so that cracks or chips due to stress may occur on the coil forming surface side (or the back side). Easy and secondary processing is difficult.

  In addition, insert molding of chips using synthetic resin is possible, but the difference in physical characteristics between the IC chip with the antenna coil integrally formed and the molding resin is large, so the moldability is poor and it is difficult to take many pieces. It has disadvantages such as high cost.

  Further, in the case of insert molding, there is a disadvantage that thermal expansion due to the embedded resin and stress distortion generated during use directly affect the IC chip, and in the worst case, the circuit of the IC chip is broken.

  Conventionally, for example, a coin-shaped IC tag as described in Patent Document 1 has been proposed. As shown in FIG. 26, this coin-shaped IC tag is formed by applying a urethane-based adhesive 52 to both sides of a polyethylene terephthalate film 51, forming an antenna coil 53 on one adhesive 52 by an etching method, and forming an IC chip. The IC mounting film 55 is manufactured by mounting the IC chip 54.

  On the other hand, the IC mounting film 55 is sandwiched between molding plates 56a and 56b formed by mixing a metal powder such as stainless steel into a polyamide resin and formed into the same area as the IC mounting film 55, and is applied to both surfaces of the film 51 by heating and pressing. The urethane-based adhesive 52 is melted and the three are integrated to obtain a coin-shaped IC tag. Reference numeral 57 in FIG. 15 (a) is a recess for escape so that the IC chip 54 is not damaged when the IC mounting film 55 and the molding plates 56a and 56b are integrated by pressing.

  By using the two molded plates 56a and 56b mixed with the metal powder in this manner, the coin-type IC tag is given a sense of weight, and an operation failure due to insufficient weight in a device using the coin-type IC tag is avoided. can do.

  However, this coin-shaped IC tag has a structure in which the IC mounting film 55 and the two molded plates 56a and 56b are overlapped in a mold, respectively, and the three members are heated and pressed to melt the adhesive 52 to be integrated. Intermediate IC mounting film 55 cannot be handled, which causes relative displacement between IC mounting film 55 and forming plates 56a and 56b, resulting in poor appearance and poor productivity.

  The antenna coil 53 and the IC chip 54 are mounted on the adhesive 52, and the adhesive 52 is heated and melted to adhere the IC mounting film 55 to the molding plate 56a. If the thickness is too large, the pitch interval between the antenna coils 53 may be deviated, or the connection of the IC chip 54 may be deformed. On the other hand, if the layer of the adhesive 52 is too thin, the bonding strength between the IC mounting film 55 and the molding plates 56a and 56b cannot be sufficiently obtained. There is a fear that the peeling.

  SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art and to provide a non-contact communication type information carrier having good handleability and productivity.

  In order to achieve the above object, a first means of the present invention comprises a core piece formed by mounting an IC chip integrally formed with an antenna coil on one surface in a concave portion of a core piece main body, and a fitting portion provided at a central portion. A non-metallic spacer member made of, for example, synthetic resin, which fits the core piece to hold the core piece, and a metal weight imparting member arranged and connected so as to surround the outer periphery of the spacer member, The antenna coil and the metal weight imparting member are separated from each other via the spacer member.

  According to a second aspect of the present invention, in the first aspect, the fitting portion of the spacer member is formed of a bottomed concave portion or a through-hole, and the core piece body is strongly fitted into the fitting portion. It is characterized by the following.

  According to a third aspect of the present invention, in the second aspect, an annular convex portion or an annular groove portion is provided on an outer peripheral surface of the core piece main body, and an annular groove portion or an annular convex portion is provided on an inner peripheral surface of a fitting portion of the spacer member. Is provided, and the annular convex portion and the annular groove portion are fitted to each other.

  According to a fourth aspect of the present invention, in the first aspect, the fitting portion of the spacer member comprises a bottomed concave portion, and an air vent groove is formed on the inner peripheral surface of the fitting portion or the outer peripheral surface of the core piece body. It is characterized by having been done.

  According to a fifth aspect of the present invention, in the first aspect, a through hole is formed in a central portion of the weight imparting member, and a synthetic resin spacer member is firmly fitted in the through hole. It is assumed that.

  According to a sixth aspect of the present invention, in the fifth aspect, a locking rib is formed on an inner peripheral surface of the through hole, and a spacer member is firmly fitted in the through hole, thereby forming the locking rib. It is characterized in that it is cut into the outer peripheral portion of the spacer member.

  According to a seventh aspect of the present invention, in the first aspect, a through hole is formed in a central portion of the weight imparting member, and a synthetic resin spacer member is insert-molded in the through hole. Is what you do.

  According to an eighth aspect of the present invention, in the seventh aspect, a locking rib is formed on an inner peripheral surface of the through-hole, and a spacer member is insert-molded in the through-hole, whereby the locking rib is formed into a spacer. It is characterized by being cut into the outer peripheral portion of the member.

  The first means is to mount the IC chip integrally formed with the antenna coil in the concave portion of the core piece main body, thereby protecting the coil forming surface and making it easy to handle. Thus, an inexpensive non-contact communication information carrier having good handling and productivity can be provided.

  Even if the type, shape, specifications, etc. of the information carrier are different, the same core piece can be used in common and the cost can be reduced by keeping the shape of the attachment portion (attachment portion) to the core piece constant.

  In addition, since all the components are fitted or fitted and inserted with an insert mold, the manufacturing is simpler and the production efficiency can be improved as compared with the conventionally proposed ones.

  Furthermore, the weight of the non-contact communication type information carrier is increased by the metal weight giving member, and since the antenna coil and the metal weight giving member are separated via the non-metal spacer member, the metal weight giving member is provided. The communication can be prevented from being adversely affected, and the selection range of the metal constituting the weight applying member can be expanded.

  In the second means, the fitting portion of the spacer member is formed of a bottomed concave portion or a through hole, and the core piece body is strongly fitted in the fitting portion. The connection between the core piece main body and the spacer member is strengthened.

  In the third means, an annular convex portion or an annular groove portion is provided on an outer peripheral surface of the core piece main body, and an annular groove portion or an annular convex portion is provided on an inner peripheral surface of a fitting portion of the spacer member. Because of the structure in which the annular groove is fitted, the connection between the core piece main body and the spacer member is further strengthened.

  The fourth means is such that the fitting portion of the spacer member is formed of a recess having a bottom, and an air vent groove is formed on the inner peripheral surface of the fitting portion or the outer peripheral surface of the core piece body. The air can be evacuated when fitting to the fitting part of the core piece, so that the fitting of the core piece is reliable.

  According to the fifth means, since the relatively soft spacer member made of synthetic resin is firmly fitted into the through hole of the metal and hard weight giving member, the holding of the spacer member by the weight giving member is reliable. .

  In the sixth means and the eighth means, since the locking rib provided in the through hole of the weight applying member bites into the outer peripheral portion of the spacer member, the connection between the weight applying member and the locking rib is strong. .

  The seventh means is that if the spacer member is insert-molded in the through hole of the weight imparting member, the weight imparting member and the spacer member can be handled as one part, and the assembly of the non-contact communication type information carrier can be performed. It becomes simple.

  In the eighth means, the locking rib is formed on the inner peripheral surface of the weight imparting member, and the locking rib is cut into the outer peripheral portion of the spacer member by insert-molding the spacer member in the through hole. It has such features that the connection between the weight applying member and the spacer member becomes tighter.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 10 are views for explaining a non-contact communication type information carrier according to the first embodiment. FIG. 1 is an enlarged perspective view of an IC chip, FIG. 2 is a plan view of a core piece main body, and FIG. FIG. 4 is a plan view of the core piece, and FIG. 5 is a front view of a part of the core piece.

  FIG. 6 is a plan view showing a state before a core piece is attached to a token used for electronic money transactions, etc., FIG. 7 is a plan view after the attachment, FIG. 8 is a partially enlarged sectional view of the token before the attachment, and FIG. FIG. 10 is an enlarged cross-sectional view taken along line 7A-A of FIG. 7A.

  As shown in FIG. 1, a spiral antenna coil 3 is integrally formed on a surface of a square IC chip 1 on a circuit forming surface side via an insulating layer 2 made of polyimide resin or the like. The antenna coil 3 can be formed by an electroforming plating method, a photoresist method, or the like, and both ends are connected to the input / output terminals 4, 4 through through holes formed in the insulating layer 2. As shown in the figure, the antenna coil 3 is formed on the IC chip 1 so that the center O1 of the IC chip 1 and the winding center O2 of the rectangular spiral antenna coil 3 coincide.

  The core piece body 5 has a substantially cup shape, is formed of a thermoplastic resin such as a polycarbonate resin or an epoxy resin, and has a circular bottomed concave portion 6 at a center position as shown in FIGS. 2 and 3. A caulking margin 7 is formed integrally around the opening of the recess 6. If necessary, one or more V-shaped or U-shaped notches can be formed in the circumferential direction of the swaging margin 7. On the outer peripheral surface of the core piece main body 5, one or a plurality of annular ribs 8 having a semicircular, triangular or trapezoidal cross section are formed.

  The diameter D (see FIG. 2) of the concave portion 6 is designed to be substantially equal to the diagonal length L of the IC chip 1 shown in FIG. 1, and by inserting the IC chip 1 into the concave portion 6, the winding center of the antenna coil 3 The antenna coil 3 (IC chip 1) is automatically positioned at the center so that O2 coincides with the center O3 of the core piece body 5, that is, within the core piece body 5.

  The IC chip 1 is inserted into the recess 6 as shown in FIG. 5 with the antenna coil 3 side down, and an ultrasonic welding horn (not shown) is pressed from above the core piece body 5 to heat the crimping allowance 7 inward. As shown in FIGS. 4 and 5, the caulking portion 9 for locking the four corners 1 a to 1 d of the IC chip 1 is formed, and the IC chip 1 is fixed in the recess 6.

  By providing the notch as described above, the caulking allowance 9 is heated and softened inward, and the caulking portion 9 is formed to extend inward without forming wrinkles when caulking. However, it can be securely fixed in the core piece body 5. Further, by installing the IC chip 1 in the concave portion 6 with the antenna coil 3 side facing down, the antenna coil 3 can be closely adhered to the bottom portion 12 of the concave portion 6 and protected. There is a protective effect without damaging the coil 3. If the core piece body 5 is formed of a transparent or translucent plastic, it is convenient to check whether or not the IC chip 1 is mounted.

  The core piece 11 is formed by fitting the IC chip 1 into the core piece main body 5 in this manner. By supporting the IC chip 1 in the recess 6 of the core piece main body 5, the antenna coil 3 is protected and the size can be easily handled. Therefore, the IC coil 1 is mass-produced as the core piece 11, and the IC chip 1 is originally mounted. Each can be attached to a power member. In particular, the IC chip corners 1a to 1d, which are likely to be chipped due to stress or the like during handling of the IC chip 1 or after fitting with the target product, can be protected by the core piece 11.

  The token 13 used for electronic money transactions or the like has a disk shape (coin shape) having a diameter of 30 mm and a thickness of 2.5 mm, for example. It is composed of two members, a metal weight imparting member 15 surrounding the outer periphery of the member 14.

  The spacer member 14 is made of, for example, acrylonitrile-butadiene-styrene resin (ABS resin), polybutylene terephthalate resin (PBT resin), polyphenylene sulfite resin (PPS resin), polycarbonate resin (PC resin), polyamide resin, polypropylene resin, or the like. It is made of a synthetic resin molded body.

On the other hand, when the weight imparting member 15 is composed of a single metal, for example, tungsten (specific gravity 19.24), lead (specific gravity 11.34), nickel (specific gravity 8.85), iron (specific gravity 7.86), aluminum ( Specific gravity 2.70), stainless steel or the like is used. When the weight imparting member 15 is composed of a composition of a metal and a synthetic resin, for example, a metal such as tungsten, lead, nickel, iron, aluminum, and stainless steel (powder, flake, fiber, etc.) For example, a composition with a synthetic resin such as acrylonitrile-butadiene-styrene resin (ABS resin), polybutylene terephthalate resin (PBT resin), polyphenylene sulfide resin (PPS resin), polycarbonate resin (PC resin), polyamide resin, and polypropylene resin (Mixture).

  The content of the metal (powder, strip, fiber, etc.) is suitably in the range of about 20 to 70% by weight. For example, by adding and dispersing tungsten fine powder to ABS resin, the weight imparting member 15 having a specific gravity of about 3.1 can be formed.

  The base resin forming the spacer member 14 and the base resin forming the weight imparting member 15 may be the same or different. If the base resin of the spacer member 14 is the same as the base resin of the weight imparting member 15, the physical properties of the spacer member 14 and the weight imparting member 15 are close to each other, so that the joining of the spacer member 14 and the weight imparting member 15 is reliable. .

  By strongly fitting the spacer member 14 into the central through hole of the weight imparting member 15, the weight imparting member 15 holds the spacer member 14 integrally.

  By configuring most of the token 13 with the metal weight imparting member 15 in this way, it is possible to impart a sense of weight to the token 13 and to prevent the core piece 11 and the spacer member 14 from being subjected to an external force such as a drop impact. Helps mechanical protection.

  At the center of the spacer member 14, a bottomed and circular fitting portion 16 is provided, an annular groove portion 17 is formed along the inner peripheral surface of the fitting portion 16, and the annular groove portion 17 extends upward from the bottom of the fitting portion 16. One or a plurality of air vent grooves 18 (two in this embodiment so as to face each other as shown in FIG. 9) are formed over the opening.

  The core piece 11 is firmly fitted to the fitting portion 16 of the token 13 as shown in FIGS. If the air in the fitting portion 16 is not allowed to escape to some extent during this strong fitting, the compressed air remains in the fitting portion 16 and the core piece 11 comes off from the token 13 when the assembled token is subjected to a drop test. Sometimes. In order to avoid such a situation, an air vent groove 18 is formed on the inner peripheral surface of the fitting portion 16.

  As shown in FIG. 10, when the strong fitting is completed, the annular rib 8 of the core piece main body 5 is fitted into the annular groove 17 of the fitting portion 16, and the outer peripheral surface of the core piece main body 5 and the fitting portion 16 are The inner peripheral surface is in close contact with the surface. At this time, if the spacer member 14 is formed of a synthetic resin harder than the core piece main body 5, the opening edge portion 10 (see FIG. 9) of the air vent groove 18 cuts into the annular rib 8 of the core piece main body 5, and The connection of the token 13 (spacer member 14) becomes stronger.

  As shown in FIG. 10, the bottom part 12 of the core piece main body 5 is mounted on the front side, that is, the antenna coil 3 is mounted so as to be as close to the front side as possible, and is fixed so that the surface of the bottom part 12 does not protrude from the surface of the token 13. . Further, the antenna coil 3 is separated from the metal weight imparting member 15 by a predetermined distance via a spacer member 14 made of synthetic resin.

  As described above, since the fitting portion 16 is formed at the center position of the token 13, the orientation of the IC chip 1 is arbitrary, and the center O4 of the token 13 and the center O2 of the IC chip 1 coincide with each other. (See FIGS. 6 and 7).

  11 to 13 are views for explaining a non-contact communication type information carrier according to a second embodiment of the present invention. FIG. 11 is a partial cross-sectional view of a central portion of a weight giving member, and FIG. FIG. 13 is a cross-sectional view showing a state in which the spacer member is firmly fitted to the applying member, and FIG. 13 is a cross-sectional view showing a state in which the core piece is strongly fitted inside the spacer member.

  The difference between this embodiment and the first embodiment is that the cross-sectional shape is semicircular, triangular or trapezoidal along the inner peripheral surface of the through hole 19 formed at the center of the weight imparting member 15. Is that one or a plurality of locking ribs 20 (in this embodiment, one cross-section is semicircular in shape). By providing the locking ribs 20 in this manner, when the spacer member 14 is tightly fitted to the weight imparting member 15, the locking ribs 20 bite into the outer peripheral portion of the synthetic resin spacer member 14 as shown in FIG. The connection between the spacer member 14 and the weight applying member 15 becomes tighter.

  In the first and second embodiments, the core piece 11 is firmly fitted to the spacer member 14 after the spacer piece 14 is firmly fitted to the weight imparting member 15, but the core piece 11 is previously fitted to the spacer member 14. After the strong fitting, the spacer member 14 may be strongly fitted to the weight applying member 15.

  14 and 15 are views for explaining a non-contact communication type information carrier according to a third embodiment of the present invention. FIG. 14 is a partial cross-sectional view of a central portion of the token, and FIG. FIG. 4 is a cross-sectional view showing a state in which a core piece is fitted to FIG.

  The main difference between this embodiment and the first embodiment is that the spacer member 14 and the weight imparting member 15 are integrated with an adhesive 21 such as an epoxy adhesive or a polyamide adhesive. is there. In the case of the present embodiment, an adhesive reservoir such as an annular groove may be provided on the outer peripheral portion of the spacer member 14.

  16 to 18 are views for explaining a non-contact communication type information carrier according to a fourth embodiment of the present invention. FIG. 16 is a partial cross-sectional view of a central portion of a weight applying member, and FIG. FIG. 18 is a cross-sectional view showing a state in which a spacer member is insert-molded to the applying member, and FIG. 18 is a cross-sectional view showing a state in which a core piece is strongly fitted inside the spacer member.

  The first point of the present embodiment, which is different from the first embodiment, is that a metal weight imparting member 15 formed in a predetermined shape is mounted on a molding die, and the central portion of the weight imparting member 15 is provided. This is the point that the spacer member 14 made of synthetic resin is insert-molded in the provided through hole 19 (see FIG. 16) (see FIG. 17).

  The second difference is that the annular rib 8 is not provided on the outer peripheral surface of the core piece 11, and the outer peripheral surface of the core piece 11 is in close contact with the inner peripheral surface of the spacer member 14, or is integrated with an adhesive. Is a point.

  19 to 21 are views for explaining a non-contact communication type information carrier according to a fifth embodiment of the present invention. FIG. 19 is a partial cross-sectional view of a central portion of a weight giving member, and FIG. FIG. 21 is a cross-sectional view showing a state in which a spacer member is insert-molded to the applying member, and FIG. 21 is a cross-sectional view showing a state in which a core piece is strongly fitted inside the spacer member.

  This embodiment differs from the fourth embodiment in that the weight imparting member 15 has a convex, semicircular, triangular or trapezoidal cross section along the inner peripheral surface of the through hole 19. The point is that one or a plurality of ribs 20 (in this embodiment, one rib having a convex cross-sectional shape) are formed. By providing the locking ribs 20 in this manner, when the spacer member 14 is insert-molded on the weight imparting member 15, the locking ribs 20 bite into the outer peripheral portion of the synthetic resin spacer member 14 as shown in FIG. Thus, the connection between the spacer member 14 and the weight applying member 15 becomes tighter.

  FIG. 22 is a cross-sectional view for explaining a non-contact communication type information carrier according to the sixth embodiment of the present invention, and shows a state before a core piece is firmly fitted to a spacer member.

  In the case of this embodiment as well, the spacer member 14 is insert-molded into the through hole 19 of the weight imparting member 15, but protrudes radially inward from the opening edge of the through hole 19 opposite to the side where the core piece 11 is inserted. The point is that the retaining ribs 22 are provided continuously or intermittently in the circumferential direction.

  If the spacer member 14 is insert-molded on the weight imparting member 15 provided with the retaining ribs 22 as described above, when the core piece 11 is momentarily firmly fitted inside the spacer member 14 as shown in FIG. In addition, it is possible to reliably prevent the spacer member 14 from coming off the weight applying member 15.

  FIG. 23 is a sectional view for explaining a non-contact communication type information carrier according to the seventh embodiment of the present invention, and shows a state before a core piece is firmly fitted to a spacer member.

This embodiment differs from the sixth embodiment in that a taper portion 23 having a diameter gradually reduced along the insertion direction of the core piece 11 is provided instead of the retaining rib 22. By providing the tapered portion 23 having a diameter gradually reduced along the insertion direction of the core piece 11, the spacer member 14 can be prevented from coming off, and the pressing force is applied when the core piece 11 is strongly fitted. Can be brought into close contact with the tapered portion 23 of the weight imparting member 15.

  FIG. 24 is a block diagram showing a data transmission system between the non-contact communication type information carrier 31, the reader / writer 32 and the host computer 44 according to the present invention. The information carrier 31 includes an antenna coil 3, a power generation circuit 33, a memory 34, a control circuit 35, and the like. The reader / writer 32 includes an antenna coil 36 corresponding to the antenna coil 3 on the information carrier 31 side, a transceiver / receiver 37, a controller 38, and the like. The connection of each part has a relationship as shown in the figure.

  FIG. 25 is a diagram showing the correspondence between the antenna coil 3 of the information carrier 31 and the antenna coil 36 of the reader / writer 32. The antenna coil 36 is wound around a cylindrical ferrite core 39 having a lower surface substantially equal to the outer shape of the antenna coil 3. The axial direction of the ferrite core 39 is arranged perpendicular to the plane of the antenna coil 3, and the lower surface of the ferrite core 39 is close to the antenna coil 3.

  The token 13 mounted on the reader / writer 32 is positioned by guide means (not shown) so that the center of the token 13 (the center of the antenna coil 3) coincides with the center of the lower surface of the ferrite core 39. Regardless of the orientation of the (antenna coil 3) on its plane, the antenna coil 3 and the antenna coil 36 are electromagnetically coupled to exchange data.

  In the above-described embodiment, the spacer member 14 is made harder than the core piece main body 5. On the contrary, the material of the core piece main body 5 is made of a material such as polyphenylene sulfide resin (PPS resin) or polyether imilo resin (PEI resin). It is also possible to make the spacer piece 14 harder by using engineering plastics and using ABS resin as the material of the spacer member 14.

  In this way, even when stress is applied to the core piece main body 5 when the core piece 11 is fitted to the fitting portion 16 of the spacer member 14 or during use after the fitting, the IC chip 1 is protected and chip breakage occurs. And circuit destruction of the IC chip can be avoided.

  In the above embodiment, the annular rib 8 is provided on the core piece main body 5 side and the annular groove 17 is formed on the spacer member 14 side. However, the annular groove 17 is formed on the core piece main body 5 side, and the annular rib 8 is provided on the spacer member 14 side. You can also.

  In the above embodiment, the fitting portion 16 formed of the bottomed concave portion is formed in the spacer member 14, but a through-hole fitting portion penetrating from the upper surface to the lower surface of the spacer member may be provided.

  In the above embodiment, the air vent groove 18 is formed on the spacer member 14 side. However, the air vent groove may be formed on the core piece main body 5 side.

The non-contact communication type information carrier according to the present invention includes a case for storing various test objects such as a card, a DNA chip, a test tube, and a test piece in addition to the token described in the above embodiment, a PC card standard and a compact flash (registered). (Trademark) standard electronic card connector, frame, case, tip of pen-type pointing device, junction connector for LAN cable or optical cable, key for automobile, etc., case or medium for optical disk, magnetic disk, tape medium It is possible to realize mounting on a small area that cannot be applied until now, such as itself.

1 is an enlarged perspective view of an IC chip for a non-contact communication type information carrier according to a first embodiment of the present invention. It is a top view of a core piece main body. It is the front view which cut a part of core piece main part. It is a top view of a core piece. It is the front view which cut some core pieces. It is a top view showing the state before attaching a core piece to a token. It is a top view after attaching a core piece to a token. It is a partial enlarged sectional view of a token before wearing. It is a partial enlarged plan view of the token before mounting. FIG. 7B is an enlarged sectional view taken on line 7A-A. FIG. 9 is a partial cross-sectional view of a central portion of a weight giving member used for a non-contact communication type information carrier according to a second embodiment of the present invention. FIG. 4 is a cross-sectional view showing a state in which a spacer member is firmly fitted to the weight imparting member. It is sectional drawing which shows the state which fitted the core piece firmly inside the spacer member. It is a partial sectional view of a central part of a token used for a non-contact communication type information carrier concerning a 3rd embodiment of the present invention. It is sectional drawing which shows the state which fitted the core piece firmly inside the token. It is a partial sectional view of a central part of a weight giving member used for a non-contact communication type information carrier concerning a 4th embodiment of the present invention. It is sectional drawing which shows the state which carried out the insert molding of the spacer member to the weight provision member. It is sectional drawing which shows the state which fitted the core piece firmly inside the spacer member. It is a partial sectional view of a central part of a weight giving member used for a non-contact communication type information carrier concerning a 5th embodiment of the present invention. It is sectional drawing which shows the state which carried out the insert molding of the spacer member to the weight provision member. It is sectional drawing which shows the state which fitted the core piece firmly inside the spacer member. It is sectional drawing which shows the state before the core piece is firmly fitted to the spacer member of the non-contact communication type information carrier which concerns on 6th Embodiment of this invention. It is sectional drawing which shows the state before the core piece is firmly fitted to the spacer member of the non-contact communication type information carrier according to the seventh embodiment of the present invention. 1 is a block diagram showing a data transmission system between a non-contact communication type information carrier, a reader / writer, and a host computer according to the present invention. It is a figure which shows the correspondence of the antenna coil of a non-contact communication type information carrier, and the antenna coil of a reader / writer. It is sectional drawing for demonstrating the coin type IC tag proposed conventionally.

Explanation of reference numerals

  1: IC chip, 1a to 1d: corner of IC chip, 3: antenna coil, 5: core piece main body, 6: concave portion, 7: swaging margin, 8: annular rib, 9: swaging portion, 10: opening edge portion, 11: core piece, 12: bottom, 13: token, 14: spacer member, 15: weight imparting member, 16: fitting part, 17: annular groove, 18: air vent groove, 19: through hole, 20: locking rib, 21: adhesive, 22: retaining rib, D: diameter of concave portion of core pis body, L: length of diagonal line of IC chip, O1: center of IC chip, O2: winding center of antenna coil, O3: core pis body O4: the center of the token.

Claims (8)

A core piece configured by mounting an IC chip integrally formed with an antenna coil on one surface in a concave portion of the core piece body;
A non-metallic spacer member for holding the core piece by fitting the core piece to a fitting portion provided at the center,
A metal weight imparting member arranged and connected so as to surround the outer periphery of the spacer member,
A noncontact communication information carrier, wherein the antenna coil and the metal weight applying member are separated via the spacer member. 2. The non-contact communication type information carrier according to claim 1, wherein the fitting portion of the spacer member comprises a bottomed concave portion or a through hole, and the core piece body is strongly fitted in the fitting portion. A non-contact communication type information carrier characterized by the following. 3. The non-contact communication information carrier according to claim 2, wherein an annular convex portion or an annular groove portion is provided on an outer peripheral surface of the core piece main body, and an annular groove portion or an annular convex portion is provided on an inner peripheral surface of a fitting portion of the spacer member. A non-contact communication type information carrier, wherein the annular projection and the annular groove are fitted. 2. The non-contact communication type information carrier according to claim 1, wherein the fitting portion of the spacer member comprises a recess having a bottom, and an air vent groove is formed on an inner peripheral surface of the fitting portion or an outer peripheral surface of the core piece body. Non-contact communication type information carrier characterized by the following. 2. The non-contact communication type information carrier according to claim 1, wherein a through hole is formed in a central portion of the weight giving member, and a synthetic resin spacer member is tightly fitted in the through hole. Non-contact communication information carrier. 6. The non-contact communication type information carrier according to claim 5, wherein a locking rib is formed on an inner peripheral surface of the through hole, and the spacer member is strongly fitted into the through hole to thereby connect the locking rib to the spacer member. A non-contact communication type information carrier characterized in that it is made to bite into the outer peripheral portion of the information carrier. 2. The non-contact communication type information carrier according to claim 1, wherein a through hole is formed in a central portion of the weight giving member, and a synthetic resin spacer member is insert-molded in the through hole. Contact communication type information carrier. 8. The non-contact communication information carrier according to claim 7, wherein a locking rib is formed on an inner peripheral surface of the through-hole, and the spacer is inserted into the through-hole to insert the spacer into the spacer. A non-contact communication type information carrier characterized in that it bites into an outer peripheral portion.

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