JP3985458B2 - Data carrier reader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a data carrier reader for reading information by an electromagnetic induction method.InRelated.
[0002]
[Prior art]
  For example, when performing gravure printing, basically four colors of yellow, magenta, cyan, and black (so-called YMCK) are individually printed on the upper and lower surfaces of the paper, and therefore a total of eight printing cylinders. Will be used.
[0003]
  Such a printing cylinder is provided with a hollow cylindrical cylinder body in which copper plating is applied to the outer peripheral surface and plate making is performed on the copper plating surface by chemical treatment or the like, and coaxially provided at both ends of the cylinder body. And a shaft portion supported by the printing press, and after being used for predetermined printing, from copper plating for forming the plate surface and chromium plating applied to the surface of the copper plating for protecting the plate surface The part called the ballad is peeled off, and after copper plating is performed again, plate making is performed, chromium plating is performed, and it is used for the next printing.
[0004]
  In order to increase the operating rate of a printing press, it is necessary to prepare a printing cylinder for the subsequent printing while performing predetermined printing. This means that the number of printing cylinders will be significantly larger than the number used simultaneously for printing, and if more than one printing machine is operated simultaneously, a larger number of printing cylinders will be prepared. The Moreover, since there are cases where the printing cylinders that can be used are determined for each printing press, management of these printing cylinders becomes very important.
[0005]
  Conventionally, an individual ID number is engraved on each shaft portion of a printing cylinder, and an operator directly reads the engraved ID number visually.
[0006]
[Problems to be solved by the invention]
  By the way, there has been a problem that it becomes difficult to read the ID number engraved on the shaft portion of the printing cylinder due to the long-term use and the corrosion generated by the chemical treatment repeatedly performed due to stains and plate making during printing. . When the ID number becomes unknown in this way, there is no method other than determining the unknown ID number by confirming all the ID numbers of the other printing cylinders, requiring a great deal of labor and time. End up. In addition, because of the engraving, there is an unstable element of operator's visual inspection and input in the management of the printing cylinder, which may cause the operator to read the imprint incorrectly or cause an input error. When such a mistake occurs, the ID numbers of all the printing cylinders must be confirmed again, which again requires a great deal of labor and time.
[0007]
  For this reason, the present applicant considered arranging a data carrier for transmitting information by an electromagnetic induction method on the shaft portion of the printing cylinder. By adopting such a configuration, it is possible to always reliably read the cylinder identification information for distinguishing from others even when the printing is soiled or corroded by chemical treatment.
[0008]
  However, in adopting a data carrier that transmits information by the electromagnetic induction method as described above, it has been found that there are the following points to be improved. In addition, these points are not limited to printing cylinders, and are problems that may occur in common when using data carriers that transmit information by electromagnetic induction.
[0009]
  For example, when an electromagnetic induction type data carrier is arranged on a metal object that affects the magnetic field, the AC magnetic field generated by the reading-side antenna coil of the data carrier reader due to the influence of the metal object causes the storage-side antenna coil of the data carrier to There is a problem that it is difficult to reach a sufficient level and reliable reading becomes difficult. For this reason, it is necessary to make the data carrier arrangement position closer to the data carrier reader, and it is expected that the data carrier arrangement position is limited and a practical problem occurs.
[0010]
  In addition, when the portion where the data carrier is arranged is supported by another member, the data carrier interferes with the other member and is worst damaged.
[0011]
  Furthermore, it is difficult to securely and easily attach the data carrier.
[0012]
  In addition, when chemical processing or the like is performed, the data carrier is affected by corrosion or the like, resulting in poor durability.
[0013]
  Therefore, the present invention provides a data carrier reader capable of solving such problems.ofFor the purpose of provision.
[0014]
[Means for Solving the Problems]
  In order to achieve the above object, a data carrier reader according to claim 1 of the present invention is a metal object.Concave so that the cross section formed on the end face and perpendicular to the central axis forms a circlePlaced in the recessRuData carrierA chip storing information and a storage-side antenna coil connected to the chip are embedded in an exterior made of synthetic resin, and the storage-side antenna coil has an axial direction along the axial direction of the recess. Located in the center of the recessThe information stored in the data carrier is read by the electromagnetic induction method at the antenna part,The antenna section is coaxial in the same direction as the shaft section from the disc-shaped base section, a cylindrical shaft section extending in the axial direction of the base section from the center of the base section, and an outer peripheral section of the base section. A core member having a cylindrical portion projecting and having an E-shaped cross section passing through the center of the shaft portion, and a reading-side antenna coil wound around the shaft portion of the core member Are embedded in a synthetic resin exterior, and have an opposing portion including the base portion and the cylindrical portion, and an insertion portion that protrudes from the opposing portion including the shaft portion and the reading-side antenna coil. AndThe core memberofAt least the reading antenna coil is woundOf the shankPart can be inserted into the recessThe insertion portion of the antenna portion is inserted into the recess including a part of the shaft portion around which the reading-side antenna coil is wound, the opposing portion is opposed to the end surface, and the reading side With the axis of the antenna coil aligned with the axis of the memory antenna coil, the reading antenna coil is driven to generate an alternating magnetic field, and an induced electromotive force is generated in the memory antenna coil. To driveIt is a feature.
[0015]
  As described above, since the reading-side antenna coil provided in the antenna section is wound around the core member having a high relative permeability, even if the data carrier is disposed on a metal object, the data carrier is disposed at a shallow position. At least, the AC magnetic field generated by the reading-side antenna coil is guided to the core member and reaches the data carrier sufficiently.
[0016]
  In addition, since at least a part of the core member around which the reading-side antenna coil is wound has a shaft shape that can be inserted into the concave portion of the metal object in which the data carrier is disposed, at least the reading-side antenna coil of the core member is wound. By inserting a portion of this into the recess, the core member and the reading-side antenna coil are brought closer to the data carrier, and the alternating magnetic field generated by the reading-side antenna coil is guided to the core member and applied to the data carrier. Reach even more.
  Furthermore, since the core member has an E-shaped section passing through the center of the shaft portion around which the reading-side antenna coil is wound, the AC magnetic field generated by the reading-side antenna coil is E-shaped. Guided by the part, it reaches the data carrier more fully.
[0017]
  A data carrier reader according to claim 2 of the present invention is provided.Synthetic resin comprising a chip that stores information and a storage-side antenna coil connected to the chip, which is a data carrier disposed in a concave portion formed on the end face of a metal object and having a cross section perpendicular to the central axis that is circular. Information stored in a data carrier arranged in the central portion of the recess with the storage-side antenna coil being axially aligned with the axial direction of the recess. The antenna unit includes a core member having a high relative permeability formed in a shaft shape as a whole and a reading-side antenna coil wound around the core member in a synthetic resin exterior. Thus, it has a rod shape that can be inserted to the vicinity of the bottom of the recess, and at least a part of the core member around which the reading side antenna coil is wound can be inserted into the recess The antenna portion is inserted into the recess including a part of the core member around which the reading-side antenna coil is wound, and the axis of the reading-side antenna coil is aligned with the axis of the storage-side antenna coil. Driving the chip by driving the reading antenna coil to generate an alternating magnetic field and generating an induced electromotive force in the memory antenna coil.It is a feature.
[0018]
  As described above, since the reading-side antenna coil provided in the antenna section is wound around the core member having a high relative permeability, even if the data carrier is disposed on a metal object, the data carrier is disposed at a shallow position. At least, the AC magnetic field generated by the reading-side antenna coil is guided to the core member and reaches the data carrier sufficiently.
  In addition, since at least a part of the core member around which the reading-side antenna coil is wound has a shaft shape that can be inserted into the concave portion of the metal object in which the data carrier is disposed, at least the reading-side antenna coil of the core member is wound. By inserting a portion of this into the recess, the core member and the reading-side antenna coil are brought closer to the data carrier, and the alternating magnetic field generated by the reading-side antenna coil is guided to the core member and applied to the data carrier. Reach even more.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
  First, reference technologyIs described below with reference to FIG.
  In FIG. 1, reference numeral 11 denotes a data carrier that can read and write information, reference numeral 12 denotes a printing cylinder that is a management target on which the data carrier 11 is provided, and reference numeral 13 denotes an electromagnetic induction method for the data carrier 11. 1 shows a data carrier reading device (data carrier reading device) capable of reading and writing information.
[0032]
  Here, the printing cylinder 12 which is a management object is specifically used in gravure printing or the like, and the printing cylinder 12 is copper-plated on the outer peripheral surface and the copper-plated surface. A cylindrical body 15 having a hollow cylindrical shape in which chrome plating is applied to the plate making surface to ensure strength after the plate is made by chemical treatment such as etching or mechanical treatment such as engraving. It has a support shaft 16 (only one is shown) made of a metal object provided coaxially at both ends and supported by a printing press, a transport device, or the like. Here, in other words, the support shaft 16 is a metal object that forms at least a part of the printing cylinder 12.
[0033]
  A concave portion 17 is formed in the support shaft 16 so as to be coaxial with the center axis of the support shaft 16 from the end surface opposite to the cylinder body 15 and to have a circular cross section perpendicular to the center axis.
[0034]
  The data carrier 11 includes a chip (not shown) that stores information read by the data carrier reading device 13 by an electromagnetic induction method, and a storage-side antenna coil 19 connected to the chip (not shown) on an exterior 20 made of synthetic resin. It is embedded. The data carrier 11 is disposed in the recess 17 of the support shaft 16 of the printing cylinder 12, and more specifically, the axial direction of the storage-side antenna coil 19 is aligned with the axial direction of the support shaft 16. For example, the storage-side antenna coil 19 is attached to the bottom surface 17 a of the recess 17 with an adhesive so as to be positioned at the center of the support shaft 16.
[0035]
  Here, the synthetic resin constituting the exterior 20 that covers the chip and the memory antenna coil 19 has high temperature resistance against high temperatures, and corrosion resistance, in particular, polypropylene having acid resistance is adopted. The chip of the data carrier 11 stores cylinder identification information for identifying the printing cylinder 12 provided with the chip with respect to other printing cylinders 12.
[0036]
  A data carrier device 22 is configured by the data carrier 11 storing the above information and the support shaft 16 of the printing cylinder 12 having the recess 17 in which the data carrier 11 is disposed.
[0037]
  The data carrier reading device 13 includes an antenna unit 24 that reads information stored in a chip of the data carrier 11 by an electromagnetic induction method and rewrites information stored in a chip of the data carrier 11 by an electromagnetic induction method, and the antenna unit The antenna unit 24 includes a synthetic resin exterior 25 and a core member 26 built in the exterior 25.
[0038]
  The core member 26 includes a disk-shaped base portion 28, a columnar shaft portion 29 having a shape extending in the axial direction of the base portion 28 from the center of the base portion 28, and a shaft portion from the outer peripheral portion of the base portion 28. 29 and a cylindrical portion 30 protruding coaxially in the same direction, and the cross-sectional shape passing through the center of the shaft portion 29 is E-shaped. The core member 26 is made of a material having a high relative magnetic permeability of 100 to 20000. Specifically, a metal magnetic core represented by supermalloy, permalloy, and silicon steel, Mn—Zn ferrite, and Ni— It consists of an oxide magnetic core typified by Zn-based ferrite, a dust core typified by carbonyl iron dust, molybdenum permalloy and sendust.
[0039]
  The reading-side antenna coil 31 is wound around the shaft portion 29 around the core member 26, and as a result, the reading-side antenna coil 31 has its central axis aligned with the central axis of the shaft portion 29. By being wound around the shaft portion 29 in this way, the reading-side antenna coil 31 is wound around the core member 26 having a high relative permeability.
[0040]
  When reading and writing information on the data carrier 11 using the antenna unit 24 of the data carrier reading device 13, the shaft 29 around which the reading-side antenna coil 31 of the antenna unit 24 is wound is connected to the printing cylinder 12. By facing the opening of the recess 17, the reading-side antenna coil 31 faces the data carrier 11 in the recess 17, and the axis of the reading-side antenna coil 31 and the axis of the storage-side antenna coil 19 of the data carrier 11 are Match. And the information memorize | stored in the data carrier 11 is read by an electromagnetic induction system, or information is rewritten. That is, the reading-side antenna coil 31 of the antenna unit 24 in the above state is driven to generate an alternating magnetic field X, and an induced electromotive force is generated in the storage-side antenna coil 19 of the data carrier 11 to drive the chip. The information stored in the chip is read or the information stored in the chip is rewritten.
[0041]
  Mentioned aboveReference technologySince the reading-side antenna coil 31 provided in the antenna unit 24 of the data carrier reading device 13 is wound around the core member 26 having a high relative permeability, the data carrier 11 is supported on the support shaft 16 that is a metal object. Even if the data carrier 11 is disposed, the AC magnetic field X generated by the reading-side antenna coil 31 is guided to the core member 26 and sufficiently reaches the data carrier 11 even if the data carrier 11 is not disposed at a shallow position. Therefore, it is possible to read information with high reliability without limiting the arrangement position of the data carrier 11.
[0042]
  Moreover, the core member 26 has an E-shaped cross section passing through the center of the shaft portion 29 around which the reading-side antenna coil 31 is wound, and forms a closed circuit of an alternating magnetic field with the support shaft 16. Therefore, the alternating magnetic field X generated by the reading-side antenna coil 31 reaches the data carrier 11 more sufficiently by being guided to the E-shaped core member 26 in this way. Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier 11.
[0043]
  Further, since the data carrier 11 is disposed in the recess 17 formed in the support shaft 16 that is a metal object, when the support shaft 16 is supported by another member, the interference between the other member and the data carrier 11 is prevented. Can be prevented. That is, even if the printing cylinder 12 is supported by a member inserted on the opening side of the concave portion 17, the supporting member and the data carrier 11 do not interfere with each other. Therefore, the data carrier 11 does not interfere with other members and are damaged.
[0044]
  Furthermore, since the data carrier 11 capable of reading and writing data by the electromagnetic induction method is provided in the printing cylinder 12, the printing cylinder 12 can be managed well.
[0045]
  In addition, since the data carrier 11 is written with identification information for identifying the printing cylinder 12 on which the data carrier 11 is provided from other printing cylinders 12, the printing cylinder 12 is managed better. be able to.
[0046]
  In addition, since the chip and the storage-side antenna coil 19 are embedded in a corrosion-resistant synthetic resin sheath 20, when the printing cylinder 12 is subjected to chemical processing such as plate making, the data carrier 11 is subject to corrosion or the like. The durability is not deteriorated under the influence. Therefore, durability can be improved.
[0047]
  Of the present inventionFirstThe embodiment is described below with reference to FIG.Reference technologyThe difference will be mainly described. In addition,Reference technologyThe same reference numerals are given to the same parts as in FIG.
[0048]
  FirstIn the embodiment, the shape of the antenna unit 24 of the data carrier reading device 13 isReference technologyIs partly different.
[0049]
  That is, the antenna portion 24 of the first embodiment has a shape in which a part of the shaft portion 29 around which the reading-side antenna coil 31 of the core member 26 having a high relative permeability is wound can be inserted into the concave portion 17 of the support shaft 16. There is no. In other words, the shaft portion 29 and the surrounding exterior 25 protrude so as to be insertable into the recess 17, and the reading-side antenna coil 31 is wound up to the portion inserted into the recess 17.That is, as is apparent from FIG. 2, the antenna portion 24 of the first embodiment has a disk-like base portion 28 in which the core member 26 with a high relative magnetic permeability incorporated in the exterior 25 is similar to the reference technology. A cylindrical shaft portion 29 having a shape extending in the axial direction of the base portion 28 from the center of the base portion 28, and a cylinder protruding coaxially from the outer peripheral portion of the base portion 28 in the same direction as the shaft portion 29. The cross-sectional shape which passes through the center of the axial part 29 has comprised E shape. As a result of the shaft portion 29 and the surrounding exterior 25 projecting so as to be insertable into the concave portion 17, the antenna portion 24 includes the facing portion 24 </ b> A including the base portion 28 and the cylindrical portion 30, the shaft portion 29 and the reading side antenna coil 31. And an insertion portion 24B protruding from the facing portion 24A.
[0050]
  According to such a first embodiment,As shown in FIG. 2, the insertion portion 24 </ b> B of the antenna portion 24 is inserted into the recess 17 including a part of the shaft portion 29 around which the reading-side antenna coil 31 is wound, and the facing portion 24 </ b> A is opposed to the end surface of the support shaft 16. Similarly to the reference technique, the reading-side antenna coil 31 is driven to generate an alternating magnetic field X in a state where the axis of the reading-side antenna coil 31 is aligned with the axis of the storage-side antenna coil 19. Since the chip is driven by generating an induced electromotive force,Of course, the same effect as the above-described reference technique can be obtained. Further, a part of the core member 26 around which the reading-side antenna coil 31 is wound is formed in the concave portion 17 of the support shaft 16 which is a metal object on which the data carrier 11 is disposed. Since it has an insertable shaft shape, at least a part of the core member 26 around which the reading-side antenna coil 31 is wound is inserted into the concave portion 17, so that the core member 26 and the reading-side antenna coil 31 are more efficiently connected to the data carrier 11. The AC magnetic field X generated by the reading-side antenna coil 31 is guided to the core member 26 and reaches the data carrier 11 more sufficiently.
[0051]
  Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier 11.
[0052]
  Of the present inventionSecondThe embodiment will be described below with reference to FIG. 3 focusing on the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment, and the description is abbreviate | omitted.
[0053]
  SecondIn the embodiment, the shape of the antenna unit 24 of the data carrier reading device 13 is partially different from that of the first embodiment.
[0054]
  That is, the antenna portion 24 of the second embodiment has a rod shape that can be inserted to the vicinity of the bottom of the concave portion 17, and the core member 26 having a high relative magnetic permeability inside thereof has a shaft shape as a whole. A reading-side antenna coil 31 is wound over the entire length of the core member 26.That is, the antenna unit 24 of the second embodiment includes a core member 26 having a shaft shape as a whole and having a high relative permeability, and a reading-side antenna coil 31 wound around the core member 26 in an outer sheath 25 made of synthetic resin. By being built in, it has a rod shape that can be inserted to the vicinity of the bottom of the recess 17.
[0055]
  According to such a second embodiment,As shown in FIG. 3, the antenna unit 24 is inserted into the recess 17 including a part of the core member 26 around which the reading-side antenna coil 31 is wound, and the axis of the reading-side antenna coil 31 is stored as in the reference technique. The chip is driven by driving the reading-side antenna coil 31 to generate an alternating magnetic field X and generating an induced electromotive force in the storage-side antenna coil 19 in a state aligned with the axis of the side-side antenna coil 19. FromOf course, the same effect as in the first embodiment can be obtained. Furthermore, since the antenna portion 24 can enter the recess 17 until it is closer to the data carrier 11, the antenna portion 24 can be inserted into the recess 17. The core member 26 and the reading-side antenna coil 31 can be brought closer to the data carrier 11, and the alternating magnetic field X generated by the reading-side antenna coil 31 is guided to the core member 26 and more sufficiently to the data carrier 11. To reach.
[0056]
  Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier 11.
[0057]
  Of the present inventionThirdThe embodiment will be described below with reference to FIG. 4 focusing on the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment, and the description is abbreviate | omitted.
[0058]
  ThirdIn the embodiment, the data carrier 11 is partly different from the first embodiment.
[0059]
  That is,ThirdIn the data carrier 11 according to the embodiment, a storage-side antenna coil 19 disposed to face the reading-side antenna coil 31 of the antenna unit 24 of the data carrier reading device 13 is wound around a cylindrical core member 33 that is short in the axial direction. . As a result, the storage-side antenna coil 19 has its central axis aligned with the central axis of the core member 33.
[0060]
  Here, the core member 33 is also made of a material having a high relative magnetic permeability of about 100 to 20000. Specifically, a metal magnetic core represented by supermalloy, permalloy, and silicon steel, or a Mn—Zn-based material. It consists of an oxide magnetic core typified by ferrite and Ni-Zn ferrite, a dust core typified by carbonyl iron dust, molybdenum permalloy and sendust.
[0061]
  like thisThirdAccording to the embodiment, the same effect as that of the first embodiment can be obtained, and further, the storage antenna coil 19 disposed opposite to the reading antenna coil 31 of the data carrier reading device 13 has a relative magnetic permeability. Even if the data carrier 11 is arranged on the support shaft 16 of the printing cylinder 12 made of a metal because it is wound around the high core member 33, the reading-side antenna can be used without placing the data carrier 11 in a shallow position. The alternating magnetic field X generated by the coil 31 is guided to the core member 33 of the data carrier 11 and reaches the storage antenna coil 19 satisfactorily. Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier 11.
[0062]
  Of the present invention4thThe embodiment is described below with reference to FIG.ThirdThe difference from the embodiment will be mainly described. In addition,ThirdThe same parts as those in the embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0063]
  4thIn the embodiment, the data carrier 11 isThirdIt is partially different from the embodiment.
[0064]
  That is,4thThe data carrier 11 of the embodiment has a shape in which a cylindrical core member 33 around which the storage-side antenna coil 19 is wound extends in the axial direction of the storage-side antenna coil 19. Specifically, the core member 33 has a shape in which the axial length is longer than the diameter.
[0065]
  like this4thAccording to an embodiment, the aboveThirdOf course, the cylindrical core member 33 around which the storage-side antenna coil 19 is wound has a shape extending in the axial direction of the storage-side antenna coil 19. The core member 33 and the storage antenna coil 19 are closer to the reading antenna coil 31, and the alternating magnetic field X generated by the reading antenna coil 31 is guided to the core member 33 and applied to the storage antenna coil 19. Reach even better. Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier 11.
[0066]
  In addition, the above first to first4thIn the embodiment, the case where the data carrier 11 is attached to the bottom surface 17a of the concave portion 17 with an adhesive has been described as an example. However, a male screw is formed on the outer peripheral surface of the data carrier 11, and The data carrier 11 may be detachably attached to the support shaft 16 by forming a female screw on the inner peripheral surface on the side and screwing the data carrier 11 into the female screw of the recess 17 with a male screw. In this case, the data carrier 11 is formed with a concave or convex engaging portion that engages with the tool, and a rotational force is input by the tool to be screwed and unscrewed. Become.
[0067]
  With this configuration, the data carrier 11 is attached to the support shaft 16 by screwing the male screw formed on the data carrier 11 with the female screw of the concave portion 17 of the support shaft 16, and the screwing is released. Thus, the data carrier 11 can be detached from the support shaft 16. Therefore, the data carrier 11 can be reliably and easily attached to the support shaft 16 which is a metal object, and can be easily detached from the support shaft 16. The data carrier 11 can be attached to and detached from the support shaft 16 because heat treatment or the like may be performed when the support shaft 16 is repaired, so that the function of the data carrier 11 is affected. During such repair, the data carrier 11 is removed and protected.
[0068]
  Moreover, the above 1st-14thIn the embodiment, the data carrier reading device 13 capable of reading and rewriting information with respect to the data carrier 11 has been described as an example. However, it is only necessary that at least the data carrier 11 can be read with information.
[0069]
【The invention's effect】
  As described above in detail, according to the data carrier reading device of the first aspect of the present invention, the reading-side antenna coil provided in the antenna section is wound around the core member having a high relative magnetic permeability. Even if the data carrier is arranged on the object, the AC magnetic field generated by the reading-side antenna coil is sufficiently guided by the core member to reach the data carrier without setting the data carrier to a shallow position.
[0070]
  Therefore, it is possible to read information with high reliability without limiting the arrangement position of the data carrier.
[0071]
  Also,coreSince at least a part of the member around which the reading-side antenna coil is wound has a shaft shape that can be inserted into the concave portion of the metal object in which the data carrier is disposed, at least the reading-side antenna coil of the core member is wound. By inserting the portion into the recess, the core member and the reading-side antenna coil are closer to the data carrier, so that the alternating magnetic field generated by the reading-side antenna coil is guided to the core member and is more sufficient for the data carrier. To reach.
[0072]
  Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier.
  The core member has an E-shaped section passing through the center of the shaft portion around which the reading-side antenna coil is wound, and the shaft portion can be inserted into the concave portion of the metal object. The alternating magnetic field generated by the coil is guided to the E-shaped portion and reaches the data carrier more sufficiently.
  Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier.
[0073]
  According to the data carrier reader of claim 2 of the present invention,Since the reading-side antenna coil provided in the antenna section is wound around a core member having a high relative magnetic permeability, even if the data carrier is disposed on a metal object, the data carrier is not disposed at a shallow position. The alternating magnetic field generated by the reading-side antenna coil is guided to the core member and sufficiently reaches the data carrier.
  Therefore, it is possible to read information with high reliability without limiting the arrangement position of the data carrier.
  In addition, since at least a part of the core member around which the reading-side antenna coil is wound has a shaft shape that can be inserted into the concave portion of the metal object in which the data carrier is disposed, at least the reading-side antenna coil of the core member is wound. By inserting a portion thereof into the recess, the core member and the reading-side antenna coil are closer to the data carrier, and the alternating magnetic field generated by the reading-side antenna coil is guided to the core member and the data carrier Reach even more fully.
  Therefore, it is possible to read information with higher reliability without limiting the arrangement position of the data carrier.
[Brief description of the drawings]
[Figure 1]Reference technologyFIG.
FIG. 2 of the present inventionFirstIt is a sectional view showing an embodiment roughly.
FIG. 3 of the present inventionSecondIt is a sectional view showing an embodiment roughly.
FIG. 4 of the present inventionThirdIt is a sectional view showing an embodiment roughly.
FIG. 5 shows the present invention.4thIt is a sectional view showing an embodiment roughly.
[Explanation of symbols]
  11 Data carrier
  13 Data carrier reading device (data carrier reading device)
  16 Support shaft (metal)
  17 recess
  19 Memory antenna coil
  22 Data carrier device
  24 Antenna section
  26 Core member
  29 Shaft
  31 Reading side antenna coil
  33 Core member
  X AC magnetic field

Claims (2)

Combining the storage side antenna coil cross section perpendicular to the central axis is formed on the end surface is connected to the chip and the chip that stores information to a data carrier that will be disposed in a recess which is recessed to form a circular metal material resin Information stored in a data carrier arranged in the central portion of the recess with the storage-side antenna coil being axially aligned with the axial direction of the recess . A data carrier reader for reading,
The antenna section is coaxial in the same direction as the shaft section from the disc-shaped base section, a cylindrical shaft section extending in the axial direction of the base section from the center of the base section, and an outer peripheral section of the base section. A core member having a cylindrical portion projecting and having an E-shaped cross section passing through the center of the shaft portion, and a reading-side antenna coil wound around the shaft portion of the core member Are embedded in a synthetic resin exterior, and have an opposing portion including the base portion and the cylindrical portion, and an insertion portion that protrudes from the opposing portion including the shaft portion and the reading-side antenna coil. Te becomes, a part of the shaft portion which is at least the reading antenna coil wound in the core member has become insertable into the recess,
The insertion portion of the antenna portion is inserted into the recess including a part of the shaft portion around which the reading-side antenna coil is wound, the opposing portion is opposed to the end surface, and the axis of the reading-side antenna coil is The read-side antenna coil is driven to generate an AC magnetic field in a state aligned with the axis of the storage-side antenna coil, and the chip is driven by generating an induced electromotive force in the storage-side antenna coil. A data carrier reader. Synthetic resin comprising a chip that stores information and a storage-side antenna coil connected to the chip, which is a data carrier disposed in a concave portion formed on the end face of a metal object and having a cross section perpendicular to the central axis that is circular. Information stored in a data carrier arranged in the central portion of the recess with the storage-side antenna coil being axially aligned with the axial direction of the recess. A data carrier reader for reading,
The antenna portion includes a core member having a high relative magnetic permeability formed as a whole and a reading-side antenna coil wound around the core member in a synthetic resin exterior so that the bottom portion of the concave portion is formed. It has a rod shape that can be inserted to the vicinity, and at least a part of the core member around which the reading-side antenna coil is wound can be inserted into the recess,
In a state where the antenna unit is inserted into the recess including a part of the core member around which the reading-side antenna coil is wound, and the axis of the reading-side antenna coil is aligned with the axis of the storage-side antenna coil, A data carrier reader , wherein the chip is driven by driving the reading antenna coil to generate an alternating magnetic field and generating an induced electromotive force in the memory antenna coil .

Images