JP6535462B2 - Marking tool - Google Patents

Description

  The present invention is installed on the ground by being attached to the head of a sign such as a pile at least a part of which is embedded in the ground, or directly fixed or bonded to the ground surface, and the land boundary display or section Marking equipment equipped with geographical information such as numbers, distances from reference points, survey points, ground information such as the installation status of cables, water pipes, gas pipes etc. or maintenance history information of roads, railways etc. The present invention relates to an indicator provided with a metal body member, or an indicator made of the same.

  As this type of marking tool, an IC tag incorporating a memory circuit storing marking information, a metallic display plate with a visible display on the top surface and covering the top surface of the IC tag, and the display plate And a nonmagnetic layer inserted between the magnetic layer and the IC tag (see Patent Document 1).

Patent No. 5096862

  However, in this marking tool, a nonmagnetic layer must be provided, and the height of the stacked marking tool is increased.

  On the other hand, there are IC tags in which a small antenna element is mounted to reduce the size, and the communication distance is limited. Such an IC tag is used by connecting a separate auxiliary antenna in order to increase the communication distance.

  Therefore, the present invention provides an indicator with a small height and a simple structure while increasing the communication distance of the IC tag by causing the body member of the indicator to function as an auxiliary antenna or antenna of the IC tag. The purpose is

  In order to achieve the above object, a marking tool according to one configuration of the present invention is a marking tool installed on the ground, which is a flat metal body member having an upper surface, a lower surface and an outer peripheral surface, A recess is formed at one position on the outer peripheral surface across the upper surface and the lower surface, and an IC tag receiving unit is provided on the upper surface or the lower surface in the recess, the IC tag receiving unit The IC tag is disposed in the IC tag and performs communication by an electromagnetic induction method, and the IC tag receiving portion is separated from the bottom surface of the recessed portion.

  According to this configuration, since the IC tag can be provided on the metal main body member, the main body member can function as an auxiliary antenna or an antenna of the IC tag at the time of communication of the IC tag. In particular, since the IC tag receiving unit is disposed such that a gap is formed between the IC tag and the main body member, it is effective for amplification of electromagnetic waves. Therefore, the communication distance of the IC tag can be increased. As described above, in order to cause the main body member of the marking tool to function as an auxiliary antenna of the IC tag, it is not necessary to provide an additional auxiliary antenna, and the marking tool has a small height and a simple structure.

  Preferably, the main body member has a substantially disc shape, and the recess extends radially toward the center of the main body member. Preferably, the upper surface of the main body member is provided with a visible display.

  According to a preferred embodiment, the body member constitutes a part or all of a metal crucible.

  Preferably, the communication frequency of the IC tag is 13.56 MHz. Preferably, the radial length of the recessed portion is 1/9 to 1/3 of the radius of the substantially disc-like main body member.

  The main body member according to an aspect of the present invention is the main body member of the marking tool.

  According to the marking tool of the present invention, while the communication distance of the IC tag is increased, the height is small and the structure is simple.

It is a perspective view of the main body member of the indicator concerning a 1st embodiment of the present invention. (A) is a top view of the main body member of FIG. 1, (b) is a partially enlarged view thereof, and (c) is a bottom view of the main body member of FIG. It is an III-III arrow line view of FIG. It is a perspective view of the marking tool which attached the IC tag to the main body member of FIG. It is a partially expanded view of the marking tool of FIG. It is a VI-VI line arrow line view of FIG. It is sectional drawing which shows a mode that the marking tool of FIG. 4 was installed in the ground. It is a perspective view of a pile equipped with a sign according to a second embodiment of the present invention. (A) is a top view of the main body member of the marking tool of FIG. 8, (b) is a top view of the marking tool which attached the IC tag to the main body member of (a). It is an expanded sectional view of the principal part of FIG. It is an expanded sectional view of the indicator concerning a 3rd embodiment of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIGS. 1, 2 (a), 2 (b) and 3 show body members of a marking tool according to a first embodiment of the present invention. The marking tool comprises a substantially disc-shaped main body member 20 formed of a metal such as stainless steel, brass or aluminum, and an IC tag described later. For example, an adhesive or the like is applied to the lower surface 21 of the body member 20, and the body member 20 is affixed and fixed to a road surface such as asphalt. Instead, a nail (15 in FIG. 7) having a female screw (21 a in FIG. 7) cut in the lower surface 21 of the body member 20 and a male screw (15 a in FIG. 7) formed on the head is attached. May be In this case, the nail is driven into the ground and fixed to the road surface. Further, the marking tool may be made of an IC tag attached to a metal cage in which the main body member 20 and a leg portion corresponding to a nail are integrally formed. In this case, the main body member 20 functions as the head of the metal crucible.

  At the center of the upper surface 22 of the main body member 20, a center indication 30 for indicating the center is attached by marking or printing as a visible indication. Therefore, the main body member 20 functions as a display.

  A recessed portion 41 recessed from the outer periphery toward the center is formed on the upper surface 22 and the lower surface 21 at one place which is an arbitrary very small part of the outer peripheral surface 23 in the body member 20. An inner surface 42 of the recessed portion 41 is substantially perpendicular to the upper surface 22 and the lower surface 21 of the main body member 20, and two side surfaces 42a extending substantially in a radial direction, and a bottom surface connecting the side surfaces 42a substantially orthogonal to the side surfaces 42a. And 42b.

  Preferably, the recess 41 is limited to the peripheral portion of the marking member 20. Specifically, the recessed length L1 of the recessed portion 41 is R / 10 to R / 2, preferably R / 9 to R / 3, with respect to the radius R of the disk-shaped main body member 20. And more preferably R / 8 to R / 4.

  The width L2 of the recessed portion 41 is R / 50 to R / 10, preferably R / 40 to R / 12, more preferably R / 50 to R / 10 with respect to the radius R of the disk-like main body member 20. / 30 to R / 15. The width L2 of the recess 41 is also 1/5 to 1/2, preferably about 2/5, of the recess length L1 of the recess 41.

  An IC tag receiving portion 43 is provided on the upper surface 22 side of the main body member 20 in the recessed portion 41. The IC tag receiving portion 43 is formed by forming box-shaped depressions 43 a of the same size on both sides of a part of the recess 41 extending along the radial direction, and these depressions 43 a can hold both sides of the IC tag . The IC tag receiving portion 43 is separated from the bottom surface 42 b of the recessed portion 41. The IC tag receiving unit 43 is slightly larger than the target IC tag, and has a dimension capable of restricting the movement of the IC tag. The depth D of the IC tag receiving portion 43 is a dimension such that the upper surface of the IC tag and the upper surface 22 of the main body member 20 are flush with each other. The width L 3 of the IC tag receiving portion 43 is approximately twice the width L 2 of the recessed portion 41.

  Before the display member 20 is installed, as shown in FIGS. 4 to 6, a small IC tag 25 is provided, and these constitute a marking tool. Specifically, the IC tag 25 is accommodated in the IC tag receiving unit 43 of the marking tool A. Since the IC tag 25 is compact, the antenna element (shown) is compact, and the communication distance is limited. Therefore, when used by being attached to the marking tool A or the like, an auxiliary antenna is usually connected to the IC tag 25 in order to secure the required communication distance. The auxiliary antenna function in this embodiment will be described later.

  The IC tag 25 has an integrated circuit (not shown) including a storage circuit (not shown) that stores data including marking information such as geographical information and embedding status. The IC tag 25 also has an interface 25a that enables reading and writing of data to the storage circuit. The interface 25a has an antenna function, a matching circuit function, and the like that enable noncontact communication by electromagnetic waves. That is, the IC tag 25 in the present embodiment communicates by the electromagnetic induction method. Preferably, the frequency band of communication of the IC tag 25 is 13.56 MHz. This antenna function is realized by the above-described small antenna element (shown). Alternatively, the IC tag 25 may be antennaless without the interface 25a having the antenna function.

  The IC tag 25 is accommodated in the IC tag receiving unit 43 and attached to the recess 43 a of the receiving unit 43 with a nonconductive adhesive or the like.

  As described above, since the IC tag receiving portion 43 is separated from the bottom surface 42 b of the recessed portion 41, when the IC tag 25 is received in the IC tag receiving portion 43, the space between the IC tag 25 and the main body member 20. A gap 47 is formed in the The gap 47 is necessary for the main body member 20 to function well as an auxiliary antenna or antenna of the IC tag 25. The size of the gap 47 depends on the size of the recess 41 and the shape, size, and material of the body member 20. However, in the present embodiment, the gap 47 radial dimension L4 is, for example, 1/10 to 4/5, preferably 1/8 to 3/4, with respect to the radial length L5 of the IC tag 25. Preferably, it is 1/7 to 2/3.

  The above-mentioned interface 25a of the IC tag 25 has, for example, a conductive connection (not shown). When the IC tag 25 is stored in the IC tag receiving unit 43, the conductive connection portion (not shown) contacts the main body member 20. Thus, the conductive connection portion (not shown) is provided on the metal main body member 20, whereby the main body member 20 functions as an auxiliary antenna of the IC tag 25. When the IC tag 25 is antennaless as described above, the main body member 20 functions as an antenna.

  On the upper surface 22 of the main body member 20 to which the IC tag 25 is attached, as shown in FIG. 7, a coating material 23 made of, for example, a resin film is heat-pressed and laminated. The IC tag 25 is securely attached to the main body member 20 by this laminating process. The attachment of the IC tag 25 to the main body member 20 may be realized by only one of adhesion and lamination.

  After that, the locking member 15 made of a nail is attached to the marking tool A. The marking tool A and the locking member 15 are integrated to constitute a metal crucible. When installing on the ground G, the tip of the locking member 15 is aligned with the installation location of the ground G, and then the entire metal rod is driven into the ground.

  8 to 10 show a marking tool according to a second embodiment of the present invention. The same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 8 shows a configuration in which the marking tool according to the second embodiment of the present invention is attached to a pile. The pile B shown in the same figure is a pile main body 1 consisting of a tip 11 entering the ground G, a trunk 12 and a head 13, a cap 14 for covering the head 13, and a mark attached to the cap 14 Equipment AA. The marking tool AA is placed in a circular recess 14b provided in the center of the top surface 14a of the cap 14 of the pile body 1 before or after the pile body 1 is driven into the ground G and buried in a predetermined position. It is fixed by hammering a metal pin or a locking member 15A such as a commercially available nail or screw with a hammer. The pile main body 1 is entirely or partially buried in the ground G except for the top portion including the top surface 14a.

  The material of the pile main body 1 is made of resin, wood or concrete, preferably made of resin. As resin-made things, single or a mixture of thermoplastic resins, such as polyethylene, a polypropylene, polyester, a polystyrene, polyamide, polysulfone, or a waste resin is used. Further, as a material of the cap 14, a thermoplastic resin such as polyethylene, polypropylene, fluorocarbon resin, polycarbonate, polysulfone, polyester, or a thermosetting resin such as phenol or polyimide is used. That is, pile body 1 consists of materials other than metal.

  As shown in FIG. 9, in the present embodiment, the main body member is made of a display plate 20 made of metal. Specifically, the display plate 20 is formed of a metal such as stainless steel, brass, or aluminum. On the upper surface 22 of the display plate 20, an identification display 30A such as an identification or management number or symbol is attached by marking or printing as a visible display. In the case of the illustrated example, the identification symbol "11-517" and the marking purpose "land survey" are described. The visible indication includes not only the notation of characters and numbers but also simple symbols such as “+”, “−” or “o”, as long as the presence of the marking tool AB can be visually recognized.

  In the display plate 20, one recessed portion 41 of the same size is provided at the same position as that of the first embodiment. As shown in FIG. 9 (b), the small IC tag 25 is attached to the recess 41 before the marking tool AA is attached to the pile B of FIG. It is attached to the IC tag receiving unit 43, and the display plate 20 and the IC tag 25 constitute a marking tool AA.

  In the present embodiment, since the locking member 15A is also made of metal, contacting the display plate 22 functions as an auxiliary antenna or antenna of the IC tag 25.

  Next, the operation of this indicator will be described. As shown in FIG. 10, the pile B shown in FIG. 8 is driven into the ground G of the place to be surveyed, the display plate 20, geographical information and burial on the top surface 14a of the head 13 of the pile body 1 A marking member AA provided with an IC tag 25 storing marking information such as a memorial in a storage circuit (not shown) is attached by a locking member 15A. When reading the marking information from the pile B, the operator brings the detector 60 closer to the side of the marking tool AA and applies a magnetic field to the marking tool AA. The antenna element (shown) of the interface 25a (FIG. 9B) of the IC tag 25 resonates by the addition of the magnetic field and transmits an electromagnetic wave W. The electromagnetic wave W is transmitted by the display plate 20 functioning as an auxiliary antenna. The light is amplified and emitted from the entire top surface 22 of the display plate 20. Therefore, the communication distance of the IC tag 25 is greatly improved. The detector 60 is, for example, a smartphone having an IC tag reading function.

  When the reception intensity of the electromagnetic wave W at the detector 60 becomes equal to or higher than a certain level, a notification lamp or a notification sound generation means provided in the detector 60 is activated to notify the operator. That is, when the detector 60 is configured by a smartphone, notification to the worker is performed via a dedicated application installed in the smartphone. Thereby, the place of the pile B is located. Further, since the display 30 (FIG. 9 (b)) is attached to the display plate 20, the presence of the marking tool AA can be visually recognized even when the marking information of the marking tool AA can not be read. Marking information corresponding to the display 30 on the top surface 22 can be retrieved from computer data.

  In the present embodiment, the IC tag receiving unit 43 is provided on the upper surface 22 side of the marking tool A, but the IC tag receiving unit 43 may be formed on the lower surface 21 of the display plate 22. In this configuration, when the pile B is driven into the ground G, the IC tag 25 can be prevented from being struck accidentally.

  Next, FIG. 11 shows a marking tool according to a third embodiment of the present invention. The marking tool AB according to the third embodiment uses, as the main body member 20, a flat, truncated cone-shaped metal crucible formed of a metal such as brass or aluminum. In the case of this marking tool B, a recess 22d is formed in the central portion of the main body member 20, and a locking member 15B such as a nail is driven into the insertion hole 22a in the central portion of the recess 22d. The marking tool AB can be installed on the ground G by placing the head on the bottom of the recess 22 d. A center mark 30 such as a "+" mark is provided on the top surface of the locking member 15B.

  The main body member 20 according to the present embodiment is also provided with one recessed portion 41 recessed from the outer peripheral portion toward the central portion.

  In addition, although the coating material 23 (FIG. 7) is not shown in FIG. 11, you may provide also in this embodiment.

  In the second embodiment, the IC tag 25 may be provided on the lower surface of the display plate 20. However, in the first and third embodiments, since the main body member 20 has a certain thickness, the IC tag is 25 is preferably provided on the upper surface 22 side of the main body member 20.

  The present invention is not limited to the above embodiments, and various additions, modifications, or deletions can be made without departing from the scope of the present invention. For example, although the main body member of the marking tool has a disc shape, it may have any shape as long as it is flat. However, a circular shape or a polygonal shape similar to a circular shape is preferable. In addition, the IC tag receiving unit 43 may not have a portion such as the recess 43a for the IC tag 25 to be fitted. That is, if the place where the IC tag 25 is arranged with respect to the recessed part 41 is determined, the place functions as the IC tag receiving part 43. Therefore, the IC tag 25 may simply be placed across the recess 43 on the upper surface 22 of the body member 20. Furthermore, the communication frequency band of the IC tag is not limited to 13.56 MHz. For example, it may be a communication frequency band of UHF or 125 kHz.

A, AA, AB Marking material G Ground 20 Body member 21 Bottom surface 22 Top surface 25 IC tag 23 Outer circumferential surface 41 Recess 42 a Bottom surface 43 IC tag receiving portion

Claims (7)

A marking tool installed on the ground,
A flat metal body member having an upper surface, a lower surface and an outer peripheral surface, wherein a recess is formed in one place of the outer peripheral surface across the upper surface and the lower surface, and the upper surface or the lower surface is formed in the recess. Oite on the side of, and on either side of the part recess of the box-like formed IC tag receiving portion of the recess is configured, and the body member,
The IC tag includes the IC tag which is disposed with its both sides held and disposed in the IC tag receiving unit and which performs communication by an electromagnetic induction method,
The marking tool, wherein the IC tag receiving portion is separated from the bottom surface of the recessed portion. The marking tool according to claim 1, wherein
The marking tool, wherein the main body member has a substantially disc shape, and the recess extends radially toward the center of the main body member. The marking tool according to claim 1 or 2, wherein
The marking tool, wherein the top surface of the body member is provided with a visible indication. The marking tool according to any one of claims 1 to 3, wherein
The marking tool, wherein the body member constitutes a part or all of a metal crucible. The marking tool according to any one of claims 1 to 4, wherein
The marking tool wherein the communication frequency of the IC tag is 13.56 MHz. The marking tool according to any one of claims 3 to 5, which is subordinate to claim 2 or claim 2,
The marking tool whose radial length of the said recessed part is 1/9-1/3 of the radius of the said substantially disk shaped main body member. It is a body member of a marking tool installed on the ground,
The main body member is flat and made of metal having an upper surface, a lower surface and an outer peripheral surface, and a recess is formed in one place of the outer peripheral surface across the upper surface and the lower surface, and the upper surface or the upper surface Oite on the side of the lower surface, and on both sides of some recesses of the box-like formed IC tag receiving portion of the recess is formed,
The IC tag placed on both sides of the IC tag receiving unit with its both sides held is to communicate by the electromagnetic induction method,
The main body member, wherein the IC tag receiving portion is separated from the bottom wall of the recessed portion.

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