JP3135697U - RF tag and RF tag mounting tool - Google Patents

Abstract

An RF tag and an RF tag mounting tool that are easy to handle and excellent in practicality are provided.
An antenna member for communicating with an interrogator, an annular body having an inner peripheral side surface that can be fitted to a rod-shaped attachment, and an annular member provided on the annular body. An RF tag 1 having a pedestal portion 33 that is fixed in a state of being separated from a mounted object by a predetermined distance or more is configured. The annular body 3 has an inner peripheral side surface having a circumference longer than ½ of the entire circumference, for example, and the pedestal portion 33 is formed by projecting the annular body 3 in the outer circumferential direction. The antenna member 2 includes a sheet-like antenna 21. The antenna member 2 includes a protective member 22 having a rigidity higher than that of the sheet-like antenna 21 joined to at least one surface of the sheet-like antenna 21.
[Selection] Figure 1

Description

  The present invention relates to an RF tag (RF: Radio Frequency) and an RF tag mounting tool, and more particularly to a technology for providing an RF tag and an RF tag mounting tool that are easy to handle and have excellent practicality.

In recent years, the logistics industry and the transportation industry have been working to improve the efficiency of operations using RF tags.
For example, in Patent Document 1, in order to manage a plurality of product information loaded in a cart used in a distribution center, a distribution center, etc. in a short time, and to prevent erroneous delivery by a delivery company, A non-contact wireless tag is provided on the car (delivery carrier), a blocking means that can arbitrarily open and close the gate on the path of the car from arrival to shipment, and an optical detection means for detecting the entry and passage of the car. A receipt / shipment registration processing system including an information terminal that reads information on a contactless wireless tag of a car, a blocking control unit that controls blocking means based on the read information on the contactless wireless tag, and the like is disclosed.

In Patent Document 2, an IC tag is attached to a car to prevent incomplete delivery or misdelivery, and information on orders received by delivery destination, order information by product, and management information by car is processed. There is disclosed a receipt / shipment management system configured to manage products by reading information such as a product code written on an IC tag and managed by an apparatus.
JP 2003-327331 A Japanese Patent Laid-Open No. 2001-213502

  By the way, the RF tag to be mounted on an attachment such as a basket car is required to have not only easy attachment / detachment but also robustness that is not easily damaged or broken due to contact, collision or the like. Further, such an RF tag is also required to have a structure that does not easily come off when the mounted object moves. Also, from the viewpoint of ease of handling, it is required to be lightweight and compact, and to be low in manufacturing cost. Furthermore, the performance of the antenna mounted on the RF tag decreases when it is close to a conductor such as metal. Therefore, if the object to be attached is a conductive band, the RF tag is attached to the object to be attached. It is also necessary to prevent the object and the antenna of the RF tag from coming close to each other.

  The present invention has been made in view of such a background, and an object thereof is to provide an RF tag and an RF tag mounting tool that are easy to handle and excellent in practicality.

  In order to achieve the above object, the device according to the first aspect of the present invention is an RF tag, and can be fitted to an antenna member for communicating with an interrogator and a rod-shaped attachment. An annular body having an inner peripheral side surface having a shape, and a pedestal portion provided on the annular body and fixing the antenna member in a state of being separated from the mounted object by a predetermined distance or more.

  The invention described in claim 2 is the RF tag according to claim 1, wherein the annular body has an inner peripheral side surface having a circumference longer than ½ of the entire circumference, and the pedestal portion is The annular body is formed so as to protrude in the outer circumferential direction.

  A device according to a third aspect is the RF tag according to the first aspect, wherein the antenna member includes a sheet-like antenna.

  The invention described in claim 4 is the RF tag according to claim 3, wherein the antenna member is joined to at least one surface of the sheet-like antenna and is more rigid than the sheet-like antenna. It includes a high protection member.

  A fifth aspect of the present invention is the RF tag according to the third aspect, wherein the antenna member is bonded to both surfaces of the sheet-like antenna and has a higher rigidity than the sheet-like antenna. Is included.

  The invention according to claim 6 is the RF tag according to claim 1, wherein the antenna member has a substantially planar shape, and the antenna member is fixed to the pedestal portion at a longitudinal center portion thereof. Suppose that it is done.

  A seventh aspect of the present invention is the RF tag according to the first aspect, wherein the RF tag includes a plurality of the annular bodies, and the antenna member is arranged at a predetermined position in the longitudinal direction of the annular body. The pedestal is fixed.

  The invention according to an eighth aspect is the RF tag according to claim 1, wherein the pedestal portion is formed by extending the annular body in a flat plate shape in an outer peripheral direction thereof, and the antenna member. Includes a sheet-like antenna, and the antenna member is fixed to the pedestal portion so that the normal line of the sheet-like antenna is perpendicular to the central axis of the annular body.

  A ninth aspect of the present invention is the RF tag according to the eighth aspect, wherein the antenna member is bonded to at least one surface of the sheet-like antenna and is more rigid than the sheet-like antenna. A high protection member is included.

  The invention described in claim 10 is the RF tag according to claim 9, wherein the antenna member is bonded to both surfaces of the sheet-like antenna and has a higher rigidity than the sheet-like antenna. Is included.

  An eleventh aspect of the present invention is the RF tag according to the eighth aspect, wherein the antenna member has a substantially rectangular shape in a plane, and the antenna member is fixed to the pedestal portion at a central portion in the longitudinal direction. Suppose that it is done.

  The twelfth aspect of the present invention is the RF tag according to the first aspect, wherein the annular body is made of a cylindrical and flexible material, and the annular body is formed on the side surface of the side surface. A locking portion that has a cutting portion that separates a part along the longitudinal direction of the annular body and that removably couples the end portions to each end portion of the side surface facing the cutting portion is formed. Suppose that

  A thirteenth aspect of the present invention is the RF tag according to the first aspect, wherein the pedestal portion is formed by projecting the annular body in the outer circumferential direction, and the longitudinal direction thereof is the A fixed portion having a substantially rectangular plane parallel to the central axis of the annular body, the fixed portion having a concave portion for accommodating a sheet-like antenna in the plane thereof, and a substantially planar surface for closing the concave portion in the fixed portion. It is assumed that a rectangular protection member is provided.

  The device according to the fourteenth aspect can be fitted to an antenna member for communicating with the interrogator, and an elongated flat plate-like object to be inserted through the opening while a part of the inner peripheral side surface is opened. An annular body having a fitting portion of a different shape, a claw portion provided on a part of the inner peripheral side surface and fixing the attachment object fitted to the fitting portion, and a side surface of the annular body The antenna member is provided with a thick wall, and the antenna member is fixed in a state where the antenna member is separated from the attached object by a predetermined distance or more.

  A fifteenth aspect of the present invention is the RF tag according to the fourteenth aspect, wherein the annular body has a constricted shape that guides the mounted object from the opening to the fitting portion. To do.

  The invention according to claim 16 is the RF tag according to claim 14, wherein the antenna member includes a planar antenna having a substantially rectangular shape, and the antenna member is a longitudinal portion of the sheet antenna. It is assumed that the direction is fixed to the pedestal so that the direction is parallel to the longitudinal direction of the attachment object.

  The invention according to claim 17 is the RF tag according to claim 14, wherein the antenna member includes a planar antenna having a substantially rectangular shape, and the antenna member is a longitudinal portion of the sheet antenna. It is assumed that the direction is fixed to the pedestal so that the direction is perpendicular to the longitudinal direction of the attachment object.

  The invention according to an eighteenth aspect is the RF tag according to claim 1, wherein the antenna member includes a sheet-like antenna having a substantially rectangular plane, and the pedestal portion includes the annular body at an outer periphery thereof. The antenna member has a planar substantially rectangular fixed portion whose longitudinal direction is parallel to the central axis of the annular body, and the antenna member has a normal to the sheet-like antenna. It is fixed to the surface of the pedestal so as to be perpendicular to the central axis.

  The invention according to the nineteenth aspect is an RF tag mounting tool, comprising an annular body having an inner peripheral side surface that can be fitted to a rod-shaped mounting object, the annular body, and the antenna. It has a base part which fixes a member in the state spaced apart from the to-be-mounted thing more than predetermined distance.

  The twentieth aspect of the invention is the RF tag mounting tool according to the twentieth aspect, wherein the pedestal portion is formed by extending the annular body in a flat plate shape in the outer peripheral direction, The antenna member including the antenna is fixed to the pedestal so that the normal line of the sheet antenna is perpendicular to the center axis of the annular body.

  A twenty-first aspect of the present invention is the RF tag mounting tool according to the eighteenth aspect, wherein the annular body is made of a cylindrical and flexible material, and the annular body is disposed on a side surface thereof. There is a cutting portion that separates a part of the side surface along the longitudinal direction of the annular body, and a locking portion that removably couples the end portions to the end portions of the side surface facing each other at the cutting portion. Suppose that it is formed.

  The invention according to claim 22 is the RF tag mounting tool according to claim 18, wherein the pedestal portion is formed by projecting the annular body in the outer circumferential direction, and its longitudinal direction. Has a fixed portion having a substantially rectangular plane parallel to the central axis of the annular body, the fixed portion has a recess for accommodating a sheet-like antenna in the plane, and the fixed portion closes the recess. It is assumed that a substantially rectangular planar protective member is provided.

  The invention described in claim 23 is an RF tag mounting tool having a shape that can be fitted to an elongated flat plate-shaped mounting object that is partially opened on the inner peripheral side surface and that is inserted from the opening. An annular body having a fitting portion, a claw portion that is provided on a part of the inner peripheral side surface and fixes the attached object fitted to the fitting portion, and a side surface of the annular body is thickened. The antenna member for communicating with the interrogator has a pedestal portion that is fixed in a state of being separated from the attached object by a predetermined distance or more.

  A twenty-fourth aspect of the invention is the RF tag mounting tool according to the nineteenth aspect, wherein the antenna member includes a planar antenna having a substantially rectangular shape, and the pedestal portion includes the annular body. The antenna member has a substantially rectangular fixed portion whose longitudinal direction is parallel to the central axis of the annular body, and the antenna member has a normal to the sheet-like antenna. Suppose that it fixes to the surface of the said base part so that it may become perpendicular | vertical with respect to the center axis | shaft of a body.

  According to the present invention, it is possible to provide an RF tag and an RF tag mounting tool that are easy to handle and excellent in practicality.

  Hereinafter, embodiments of the present invention will be described.

== Example 1 ==
FIG. 1 is a perspective view of an RF tag (RF: Radio Frequency Identification) described as a first embodiment. The RF tag 1 includes an antenna member 2 having a substantially rectangular plane shape and two annular bodies 3a and 3b (RF tag mounting tools) provided in the vicinity of each end portion of the antenna member 2. The RF tag 1 is attached to the attachment 5 by fitting the annular bodies 3a and 3b to the attachment 5 such as a frame pipe of a car used in distribution / transportation business such as a distribution center or a distribution center. .

  The antenna member 2 is joined to both surfaces of the sheet-like antenna 21 so as to sandwich the sheet-like antenna 21 and the sheet-like antenna 21 from both sides, and a material (for example, acrylic resin, ABS resin, It has two protective members 22a and 22b made of polyethylene resin.

  The sheet-like antenna 21 is formed on the surface of an insulating resin sheet on the basis of an antenna pattern 211 (for example, a dipole antenna) formed with a conductor stay such as aluminum (Al) or copper (Cu), and a silicon substrate. It has an integrated circuit (hereinafter referred to as a wireless IC chip 212) that realizes basic functions of the RF tag 1 such as a communication function with a device and a data holding function. The material of the insulating resin sheet is, for example, a polyethylene or polypropylene resin.

  FIG. 2 is a block diagram of the wireless IC chip 212. The wireless IC chip 212 includes a rectifier circuit 2121, a power supply regulator 2122, a clock generation circuit 2123, a demodulation circuit 2124, a modulation circuit 2125, a logic circuit 2126, and a nonvolatile memory 2127.

  For example, the wireless IC chip 212 operates as follows. That is, when the interrogation signal transmitted from the interrogator is input, an electromotive force is generated in the antenna pattern 211. Part of this electromotive force is rectified by the rectifier circuit 2121 and becomes drive power for the RF tag 1. Another part of the electromotive force is supplied to the clock generation circuit 2123 to generate a clock signal. On the other hand, the reception signal received by the antenna pattern 211 is demodulated by the demodulation circuit 2124, and the logic circuit 2126 reads information stored in the nonvolatile memory 2127 in accordance with the demodulation signal. The read information is supplied to the modulation circuit 2125 by the logic circuit 2126, and the modulation signal modulated by the modulation circuit 2125 is output from the antenna pattern 211 as a response radio signal.

  The two annular bodies 3a and 3b (RF tag mounting tool) shown in FIG. 1 are made of an insulating material (for example, vinyl chloride or ABS resin). The side surfaces 31a and 31b of the annular bodies 3a and 3b are longer than ½ of the entire circumference, and part of the side surfaces 31a and 31b are opened (hereinafter, these openings are indicated by reference numerals 32a and 32b).

  FIG. 3 shows a view of the RF tag 1 as viewed from the direction of the central axis Z of the annular bodies 3a and 3b (the direction indicated by the arrow A in FIG. 1). Pedestals 33a and 33b to which the antenna 2 member is fixed are provided at target positions in the openings 32a and 32b with respect to the central axis Z of the annular bodies 3a and 3b.

  As shown in the figure, the pedestals 33a and 33b are formed by bending a part of the side surfaces 31a and 31b in the outer circumferential direction so that the cross-sectional shape thereof becomes a substantially semicircular shape. As shown in FIG. 1, the pedestals 33a and 33b are provided so as to form peaks along the side surfaces 31a and 31b. The antenna member 2 is joined to the tops of the pedestals 33a and 33b using an adhesive (or solvent) or the like. In the example of the RF tag 1 shown in FIG. 1, the longitudinal direction of the antenna member 2 and the direction of the central axis Z of the annular bodies 3a and 3b are coincident, but it is not always necessary to coincide. The longitudinal direction of the antenna member 2 and the direction of the central axis Z of the annular bodies 3a and 3b can be set to an arbitrary positional relationship according to the form of the attachment 5 and the like.

  When the RF tag 1 shown in FIG. 1 is attached to an attachment 5 such as a frame pipe of a car, first, the openings 32a and 32b of the annular bodies 31a and 31b are arranged in the direction of the attachment 5 (arrows in FIG. 3). The RF tag 1 is pressed against the mounted object 5 in the direction indicated by B. Then, the side surfaces 31a and 31b are elastically deformed to open the openings 32a and 32b, the attachment object 5 is fitted into the annular bodies 3a and 3b, and the RF tag 1 is attached to the attachment object 5.

  On the other hand, when removing the RF tag 1 from the attachment object 5, a force is applied to the RF tag 1 in the direction opposite to the direction in which the RF tag 1 is attached (the direction opposite to the direction indicated by the arrow B in FIG. 3). Then, the side surfaces 31a and 31b of the annular bodies 3a and 3b are elastically deformed by the pressure received from the outer peripheral side surface of the mounted object 5 to open the openings 32a and 32b, and the mounted mounted object 5 is fitted from the annular bodies 3a and 3b. Then, the RF tag 1 is removed from the attachment 5. 4A shows a state where the RF tag 1 is attached to the attachment 5 and FIG. 4B shows a state where the RF tag 1 is attached to the frame pipe (attachment 5) of the car 6.

  By the way, as described above, when the attachment 5 is a conductor, such as a frame pipe of a car, the response performance of the RF tag 1 is lowered by the proximity of the attachment 5 to the sheet antenna 21. To do. However, in the RF tag 1 of this embodiment, the entire antenna member 2 is separated from the attachment 5 by the height of the top portions 35a and 35b of the pedestals 33a and 33b. A decrease in response performance can be prevented. Note that the predetermined distance is the frequency or signal strength of a radio signal transmitted / received between the interrogator and the RF tag 1, the characteristics of the sheet antenna 21, the performance required for the RF tag 1, and the like. It will be determined according to the specifications.

  In order to examine the influence of the attachment 5 on the response performance of the RF tag 1, the RF tag 1 having the configuration shown in FIG. For performance measurement, an RF tag 1 having the dimensions shown in FIGS. 5A and 5B was prototyped. As the sheet-like antenna 21, an antenna having an antenna pattern 211 having the shape shown in FIG.

  In the performance measurement, a radio signal of a predetermined output (about 19 dBm, 81 mW) in a single port mode is transmitted from an interrogator (RF tag reader device or RF tag reader / writer device), and the RF attached to the attachment 5 The measurement was performed by measuring a distance at which a radio signal transmitted from the tag 1 can be received (information from the RF tag 1 can be read). As the attachment 5, an aluminum metal pipe having an outer diameter equal to the inner diameter of the annular bodies 3 a and 3 b was used. For comparison, the RF tag 1 was mounted on an insulating rod (for example, a wooden rod) and the same measurement was performed.

  When performance measurement was performed under the above conditions, when the RF tag 1 was attached to a metal pipe, reception was impossible at a distance of 150 cm. Further, when the RF tag 1 was attached to a wooden stick, reception was impossible when the distance between the interrogator and the RF tag 1 was 250 cm. Accordingly, the degree of performance deterioration when mounted on a metal pipe was 150/250 = 60%, and it was confirmed that the RF tag 1 of Example 1 had practically sufficient response performance.

  According to the RF tag 1 described above, it is possible to easily attach to and detach from the attached object 5. In addition, since the annular bodies 3a and 3b and the pedestals 33a and 33b are integrally formed, they are small and robust. Further, since the annular bodies 3a, 3b and the pedestals 33a, 33b can be integrally formed, manufacturing is easy and the cost can be reduced.

  Moreover, since the sheet-like antenna 21 is protected by protective members whose both surfaces are more rigid than the sheet-like antenna, the fragile sheet-like antenna 21 can be reliably protected from external force.

  Further, the RF tag 1 can be reliably attached to the attachment object 5 by the plurality of annular bodies 3a, 3b, and can be prevented from dropping off due to vibration or contact.

  Since the entire sheet-like antenna 21 is separated from the attachment 5 by a predetermined distance or more while being fixed to the pedestals 33a and 33b, a practically sufficient response performance can be obtained even when the attachment 5 is a conductor. Can be secured.

  The RF tag 1 described in the first embodiment and the other embodiments described above uses, for example, a UHF band (430 MHz band, 950 MHz band) as a frequency of a radio signal transmitted / received to / from the interrogator. Assuming, the scope to which the present invention is applied is not necessarily limited to this. For example, the present invention can be applied to an RF tag that uses a 13.56 MHz band, a 2.45 GHz band, or the like as the frequency of a radio signal.

  The RF tag 1 described in the first embodiment and other embodiments outputs a response wireless signal by using the energy of the wireless signal received from the interrogator (reader device, reader / writer device, etc.). Although the type is assumed, the present invention can be applied to an active type RF tag.

  In this embodiment, two annular bodies 3a and 3b are provided, but the number of annular bodies 3a and 3b may be three or more.

== Example 2 ==
FIG. 7 shows a perspective view of the RF tag 1 described as the second embodiment. The RF tag 1 is common to the RF tag 1 in the first embodiment with respect to the configuration of the antenna member 2, the annular bodies 3 a and 3 b, and the pedestals 33 a and 33 b, but the annular body 3 is arranged at the center in the longitudinal direction of the antenna member 2. The configuration is different from the RF tag 1 of the first embodiment in that only one is provided. When the mounting strength at the time of mounting on the mounted object 5 is not so required, only one annular body 3 can be provided as in the RF tag 1 of the second embodiment.

  In the RF tag 1 illustrated in the figure, only one annular body 3 is provided in the center in the longitudinal direction of the antenna 2 member, but the position where the annular body 3 is provided is not necessarily limited thereto. For example, the position where the annular body 3 is provided, such as being provided near the end of the antenna 2 member, can be arbitrarily set according to the shape, nature, etc. of the attachment 5. Further, in the example shown in the figure, the longitudinal direction of the antenna member 2 and the direction of the central axis Z of the annular body 3 are coincident, but may not be coincident.

  Regarding the RF tag 1 of the second embodiment described above, performance measurement was performed under the same conditions as in the first embodiment. As in the first embodiment, the degree of performance deterioration was about 60%, which was practical. In addition, it was confirmed that it had sufficient response performance.

  According to the RF tag 1 of the second embodiment described above, since there is only one annular body 3, the manufacturing cost can be suppressed as compared with the RF tag 1 of the first embodiment.

  Further, since there is only one annular body 3, the range of selection of the attachment 5 is wider than in the case of the first embodiment. In addition, the direction of the center axis Z of the annular body 3 with respect to the position where the antenna member 2 is fixed and the direction of the antenna member 2 can be arbitrarily set. For this reason, the RF tag 1 of the second embodiment can be widely applied to various types of attachments 5.

== Example 3 ==
FIG. 8 shows a perspective view of the RF tag 1 described as the third embodiment. The RF tag 1 shown in the figure is different from the RF tag 1 of the second embodiment shown in FIG. 7 in the configuration of the base portion 33 of the annular body 3. The annular body 3 of the RF tag 1 has a substantially flat pedestal portion 33 extending in the outer peripheral direction from the side surface 32, and the surface of the pedestal portion 33 is the same as the antenna member 2 shown in the first embodiment. The antenna member 2 having the configuration is joined.

  The surface of the pedestal portion 33 to which the antenna member 2 is attached is such that the normal line of the pattern surface of the antenna pattern 211 of the antenna member 2 joined to the surface is perpendicular to the central axis Z of the annular body 3. That is, the pattern surface of the antenna pattern 211 is formed so as to be parallel to a line passing through the central axis Z of the annular body 3 and facing the outer peripheral direction.

  For the RF tag 1 of Example 3, performance measurement was performed under the same conditions as in Example 1. As in Example 1, the degree of performance deterioration was about 60%, and practically sufficient response performance. It was confirmed that it has. Note that the response performance can be ensured even with the configuration of the RF tag 1 of Example 3 because the antenna pattern 211 is not easily affected by the object to be mounted 5 by positioning the antenna pattern 211 as described above. It is believed that there is.

  According to the RF tag 1 of the third embodiment, it is not necessary to separate the antenna member 2 from the mounted object 5 and a practically sufficient response performance is ensured even if the antenna member 2 is provided in a position close to the annular body 3. be able to.

  In addition, according to the RF tag 1 of the third embodiment, the antenna member 2 can be firmly fixed to the pedestal portion 3 because the antenna member 2 is joined to the pedestal portion 3 in a plane.

== Example 4 ==
FIG. 9 shows a perspective view of the RF tag 1 described as the fourth embodiment. The RF tag 1 shown in the figure is different from the RF tag 1 of the first embodiment shown in FIG. 1 in the shapes of the side surfaces 31a and 31b of the annular bodies 3a and 3b (the structure of the pedestal 33 is different from that of the first embodiment). Common). As shown in the figure, the annular body 3 of the RF tag 1 shown as Example 4 is substantially cylindrical, and the side surfaces 31a and 31b are cut along the longitudinal direction of the annular bodies 3a and 3b on the side surfaces 31a and 31b. Has been. The cutting portions 36a and 36b are provided with locking portions 37a and 37b for locking the end portions of the cut side surfaces 31a and 31b.

  On the circumferences of the side surfaces 31a and 31b, the annular bodies 3a and 36b are parallel to the cutting line of the cutting portions 36a and 36b at positions of interest relative to the central axis Z of the annular bodies 3a and 3b of the cutting portions 36a and 36b. Curved portions 38a and 38b formed by bending the side surfaces 31a and 31b of 3b to the outer peripheral side in a substantially semicircular cross section are provided. The bent portions 38a and 38b are formed thinner than the side surfaces 31a and 31b, and the bent portions 38a and 38b function as fulcrums when the annular bodies 3a and 3b are opened. That is, the annular bodies 3a and 3b can be easily opened by widening the end portions of the side surfaces 31a and 31b facing each other at the cutting portions 36a and 36b so as to be raised with the bent portions 38a and 38b as fulcrums.

  When the RF tag 1 according to the fourth embodiment is mounted on the mounted object 5, first, after the locked state by the locking portions 37a and 37b is released, the ends of the side surfaces 31a and 31b facing each other at the cutting portions 36a and 36b. The annular bodies 3a and 3b are opened by expanding the parts so as to be rolled up, and the attachment object 5 is accommodated and fitted to the inner peripheral side of the annular body 3 from the opening parts, and then the locking parts 37a and 37b. Thus, the side surfaces 31a and 31b are joined together and the end portions of the side surfaces 31a and 31b facing the cut portions 36a and 36b are locked.

  According to the RF tag 1 of Example 4 described above, the RF tag 1 can be reliably attached to the attachment 5. For this reason, this RF tag 1 is suitable when used in a situation where an external force is easily applied.

== Example 5 ==
FIG. 10 is a perspective view of the RF tag 1 described as the fifth embodiment. The RF tag 1 shown in the figure is different from the RF tag 1 of the first embodiment shown in FIG. That is, the base portion 33 of the RF tag 1 is formed by projecting a part of the side surfaces 31a, 31b, 31c of the annular body 3 in the outer peripheral direction. Further, the pedestal portion 33 has an antenna fixing portion 331 having a substantially rectangular plane, the longitudinal direction of which is provided in parallel with the central axis Z of the annular body 3. A concave portion 3311 is provided on the surface of the antenna fixing portion 331, and the sheet-like antenna 21 is accommodated in the concave portion 3311. Further, the antenna fixing portion 331 is provided with a planar substantially rectangular protective member 22 that covers the sheet antenna 21 accommodated in the recess 3311. In addition, both ends in the longitudinal direction of the recess 3311 are formed in a two-step shape, and the protection member 22 is placed so that the longitudinal end is locked to the first flat portion of each short side. Has been.

  According to the RF tag 1 of the fifth embodiment, it is not necessary to separately manufacture the antenna member 2 composed of the sheet-like antenna 21 and the protective member 22 as in the first embodiment, and the RF having the same function as the first embodiment. The tag 1 can be easily manufactured. Moreover, waterproofness can also be ensured by filling an adhesive or the like in a space surrounded by the protective member 22 and the recess 3311.

  The RF tag 1 shown in FIG. 10 has three annular bodies 3a, 3b, and 3c. However, the number of annular bodies may be one or two, or may be four or more. it can.

== Example 6 ==
FIG. 11A shows a perspective view of the RF tag 1 described as the sixth embodiment. The RF tag 1 shown in the figure is different from the RF tag 1 of the first embodiment shown in FIG. As shown in the figure, the outer shape of the annular body 3 is a substantially rectangular parallelepiped shape, and the annular body 3 is made of a flexible material. A part of the inner peripheral side surface 311 of the annular body 3 is formed with a fitting part 39 having a part that is open and that can be fitted to an elongated flat plate-like attachment object 5.

  The inner peripheral side surface 311 of the annular body 3 is formed by protruding a part of the inner peripheral side surface 311 so that the mounted object 5 fitted to the fitting portion 39 is securely fixed. Are provided with a claw portion 40 having a substantially right-angled triangular cross section. The end face of the claw portion 40 facing the inner peripheral side of the annular body 3 is formed in close contact with the mounted object 5, while the end face of the annular body 3 facing the outer peripheral side is fitted to the mounted object 5. It is formed in a slope shape so that it can be easily guided to the portion 39.

  A portion of the annular body 3 that is continuous with the fitting portion 39 on the inner peripheral side surface 311 is formed in a substantially wedge shape in cross section, whereby the article 5 is naturally guided to the fitting portion 39 along the inner peripheral side surface 311. A constricted shape is formed.

  On the side surface 31 of the annular body 3, a pedestal portion 33 is formed by forming the side surface 3 located on the one surface side of the article 5 to be fitted to the fitting portion 39 to be thick. The side surface 31 that forms the pedestal portion 33 has a sufficient thickness so that the antenna member 2 is fixed in a state of being separated from the attachment 5 by a predetermined distance or more.

  When the RF tag 1 is attached to the attachment 5, the attachment 5 is inserted into the opening 41 of the fitting portion 39. And the to-be-attached object 5 is pushed completely until the to-be-attached object 5 gets over the nail | claw part 40 completely. As a result, the attachment object 5 is locked by the claw portion 50, and the RF tag 1 is securely fixed to the attachment object 5. On the other hand, when removing the RF tag 1 from the attachment 5, the opening 41 is expanded to unlock the claw 40, and the RF tag 1 is pulled out in this state to remove the RF tag 1 from the attachment 5. 1 is removed.

  In the RF tag 1 shown in FIG. 11A, the antenna member 2 is fixed to the pedestal portion 33 so that the longitudinal direction of the sheet-like antenna 21 is parallel to the longitudinal direction of the mounted object 5, but as shown in FIG. 11B. The antenna member 2 may be fixed to the pedestal 33 so that the longitudinal direction of the sheet-like antenna 21 is perpendicular to the longitudinal direction of the attachment 5.

  According to the RF tag 1 of the sixth embodiment described above, it can be easily and reliably attached to the elongated flat plate-like attachment object 5.

== Example 7 ==
FIG. 12 is a perspective view of the RF tag 1 described as the seventh embodiment. The RF tag 1 shown in the figure is different from the RF tag 1 of the first embodiment shown in FIG. That is, the base portion 33 of the RF tag 1 is formed by projecting part of the side surfaces 31a and 31b of the annular body 3 in the outer peripheral direction. In addition, the pedestal portion 33 has an antenna fixing portion 331 having a substantially rectangular plane, the longitudinal direction of which is provided in parallel with the central axis Z of the annular body 3.

  The antenna member 2 having the same structure as that of the RF tag 1 of the first embodiment is fixed to the antenna fixing portion 331 by joining one end face in the longitudinal direction to the surface of the antenna fixing portion 331. . That is, the antenna member 2 is arranged such that the normal of the pattern surface of the antenna pattern 211 is perpendicular to the central axis Z of the annular body 3, that is, the pattern surface of the antenna pattern 211 is that of the annular body 3. They are joined so as to be in a positional relationship parallel to a line passing through the central axis Z and facing the outer peripheral direction.

  According to the RF tag 1 of the seventh embodiment, the antenna member 2 is provided at a predetermined distance or more away from the attachment 5 by the height of the pedestal portion 33. Therefore, as in the case of the RF tag 1 of the first embodiment. For this reason, the influence of the mounted object 5 is suppressed. Moreover, the influence by the to-be-attached object 5 is suppressed also for the reason similar to RF tag 1 of Example 3. FIG. For this reason, practical response performance can be ensured more reliably. For the RF tag 1 of Example 7, the number of annular bodies 3 can be arbitrarily set as in the other examples.

  The description of the above embodiment is for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes its equivalents.

1 is a perspective view of an RF tag 1 shown as Example 1. FIG. 2 is a block diagram of a wireless IC chip 212. FIG. It is the figure which looked at RF tag 1 shown as Example 1 from the direction (direction shown by arrow A in Drawing 1) of central axis Z of annular bodies 3a and 3b. It is a figure which shows a mode that RF tag 1 shown as Example 1 is mounted | worn with the to-be-mounted object 5. FIG. It is a figure which shows a mode that RF tag 1 shown as Example 1 was mounted | worn with the frame pipe (attachment 5) of the cage car 6. FIG. It is a figure which shows the dimension of RF tag 1 made as an experiment at the time of performance measurement. It is a figure which shows the dimension of RF tag 1 made as an experiment at the time of performance measurement. It is a figure which shows the antenna pattern 211 of RF tag 1 made as an experiment in the case of performance measurement. 6 is a perspective view of an RF tag 1 shown as Example 2. FIG. 6 is a perspective view of an RF tag 1 shown as Example 3. FIG. 6 is a perspective view of an RF tag 1 shown as Example 4. FIG. 10 is a perspective view of an RF tag 1 shown as Example 5. FIG. 10 is a perspective view of an RF tag 1 shown as Example 6. FIG. 10 is a perspective view of an RF tag 1 shown as Example 6. FIG. 10 is a perspective view of an RF tag 1 shown as Example 7. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 RF tag 2 Antenna member 21 Sheet-like antenna 211 Antenna pattern 212 Radio | wireless IC chip 22 Protection member 3 Annular body 31 Side surface 311 Inner peripheral side surface 32 Opening part 33 Base part 331 Antenna fixing | fixed part 3311 Recessed part 34 Tip part 35 Top part 36 Cutting part 37 Locking portion 38 Bending portion 39 Fitting portion 40 Claw portion 41 Opening portion
5 Attachments 6 Cars

Claims (24)

  An antenna member for communicating with the interrogator, an annular body having an inner peripheral side surface that can be fitted to a rod-shaped attachment, and the antenna member is provided at a predetermined distance from the attachment. An RF tag comprising a pedestal portion that is fixed in a state of being separated as described above.   2. The annular body according to claim 1, wherein the annular body has an inner circumferential side surface having a circumference longer than ½ of the entire circumference, and the pedestal portion is formed by projecting the annular body in the outer circumferential direction. The described RF tag.   The RF tag according to claim 1, wherein the antenna member includes a sheet-like antenna.   4. The RF tag according to claim 3, wherein the antenna member includes a protective member that is joined to at least one surface of the sheet-like antenna and is more rigid than the sheet-like antenna.   4. The RF tag according to claim 3, wherein the antenna member includes a protective member that is bonded to both surfaces of the sheet-shaped antenna and has higher rigidity than the sheet-shaped antenna.   2. The RF tag according to claim 1, wherein the antenna member has a substantially rectangular plane shape, and the antenna member is fixed to the pedestal portion at a central portion in a longitudinal direction thereof.   2. The RF tag according to claim 1, wherein the RF tag includes a plurality of the annular bodies, and the pedestal portion of each of the annular bodies is fixed at a predetermined position in the longitudinal direction of the antenna member.   The pedestal portion is formed by extending the annular body in a flat plate shape in the outer circumferential direction, the antenna member includes a sheet-like antenna, and the antenna member has a normal line of the sheet-like antenna at the center of the annular body. The RF tag according to claim 1, wherein the RF tag is fixed to the pedestal so as to be perpendicular to an axis.   The RF tag according to claim 8, wherein the antenna member includes a protective member that is bonded to at least one surface of the sheet-like antenna and is more rigid than the sheet-like antenna.   The RF tag according to claim 9, wherein the antenna member includes a protective member that is bonded to both surfaces of the sheet-shaped antenna and has higher rigidity than the sheet-shaped antenna.   The RF tag according to claim 8, wherein the antenna member has a substantially rectangular shape in a plane, and the antenna member is fixed to the pedestal portion at a central portion in the longitudinal direction.   The annular body is made of a cylindrical and flexible material, and the annular body has a cutting portion for separating a part of the side surface along a longitudinal direction of the annular body on the side surface thereof. The RF tag according to claim 1, wherein a locking portion is formed at each end portion of the side surfaces facing each other so as to detachably connect the end portions.   The pedestal portion is formed by projecting the annular body in the outer circumferential direction thereof, and has a substantially rectangular planar fixing portion whose longitudinal direction is parallel to the central axis of the annular body, 2. The RF tag according to claim 1, wherein the RF tag has a concave portion for accommodating a sheet-like antenna in a plane, and a protective member having a substantially planar shape that covers the concave portion is provided in the fixing portion.   An antenna member for communicating with the interrogator, an annular body having a fitting portion shaped to be fitted to an elongated flat plate-like attachment object that is partially opened on the inner peripheral side surface and is inserted from the opening, A claw portion that is provided on a part of the inner peripheral side surface and fixes the attachment object fitted to the fitting portion, and a side surface of the annular body is provided with a thick wall, and the antenna member is An RF tag comprising: a pedestal portion fixed in a state of being separated from an attachment by a predetermined distance or more.   The RF tag according to claim 14, wherein the annular body has a constricted shape that guides the object to be mounted from the opening to the fitting portion.   The antenna member includes a planar antenna having a substantially rectangular shape, and the antenna member is fixed to the pedestal so that a longitudinal direction of the sheet-like antenna is parallel to a longitudinal direction of the attachment object. The RF tag according to claim 14.   The antenna member includes a planar rectangular sheet-like antenna, and the antenna member is fixed to the pedestal so that the longitudinal direction of the sheet-like antenna is perpendicular to the longitudinal direction of the attachment object. The RF tag according to claim 14, wherein:   The antenna member includes a substantially rectangular planar sheet-like antenna, and the pedestal portion is formed by projecting the annular body in the outer circumferential direction, and a plane whose longitudinal direction is parallel to the central axis of the annular body. The antenna member has a substantially rectangular fixing portion, and the antenna member is fixed to the surface of the pedestal portion so that a normal line of the sheet-like antenna is perpendicular to a central axis of the annular body. The RF tag according to claim 1.   An annular body having an inner peripheral side surface that can be fitted to a rod-shaped attachment; and a pedestal portion that is provided on the annular body and fixes the antenna member in a state of being separated from the attachment by a predetermined distance or more. An RF tag mounting tool comprising:   The pedestal portion is formed by extending the annular body in a flat plate shape in the outer circumferential direction, and the antenna member including a sheet-like antenna has a normal line of the sheet-like antenna with respect to a central axis of the annular body. The RF tag mounting tool according to claim 19, wherein the RF tag mounting tool is fixed to the base portion so as to be vertical.   The annular body is made of a cylindrical and flexible material, and the annular body has a cutting portion for separating a part of the side surface along a longitudinal direction of the annular body on the side surface thereof. The RF tag mounting device according to claim 19, wherein a locking portion for detachably connecting the end portions is formed at each end portion of the side surfaces facing each other.   The pedestal portion is formed by projecting the annular body in the outer circumferential direction thereof, and has a substantially rectangular planar fixing portion whose longitudinal direction is parallel to the central axis of the annular body, The RF tag mounting according to claim 19, further comprising a concave portion for accommodating the sheet-like antenna in a plane, and a protective member having a substantially planar shape that covers the concave portion is provided in the fixing portion. Ingredients.   A part of the inner peripheral side surface is opened and an annular body having a fitting portion shaped to be able to be fitted to an elongated flat plate-like mounting object inserted through the opening; and provided on a part of the inner peripheral side surface; A claw portion for fixing the attachment object fitted to the fitting part, and an antenna member for communicating with the interrogator is provided from the attachment object with a thick side surface of the annular body. An RF tag mounting tool comprising a pedestal portion fixed in a state of being separated by a distance or more.   The antenna member includes a substantially rectangular planar sheet-like antenna, and the pedestal portion is formed by projecting the annular body in the outer circumferential direction, and a plane whose longitudinal direction is parallel to the central axis of the annular body. The antenna member has a substantially rectangular fixing portion, and the antenna member is fixed to the surface of the pedestal portion so that a normal line of the sheet-like antenna is perpendicular to a central axis of the annular body. The RF tag mounting tool according to claim 19.

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