JP6861411B2 - tool - Google Patents

Description

The present invention relates to a tool.

At the site of assembling, disassembling, or inspecting various devices, various types of tools such as monkey wrenches (sometimes called monkey wrenches), spanners, screwdrivers, and box wrenches are used. The work of attaching or removing screws, bolts, etc. of the same size to or from the target device is performed.

In this way, it is indispensable to install screws, bolts, etc. in the correct position of the device using an appropriate tool among a wide variety of tools, but the work of installing or removing screws, bolts, etc. is performed. It is very difficult to prevent human error if we rely on visual confirmation to select the parts or tools in the case.

On the other hand, there is a technique that enables reliable solidarity confirmation by attaching an IC tag to conventional screws and bolts and a device for mounting them (for example, Patent Document 1). The IC tag records information necessary for individual recognition of screws and bolts and the device to which they are attached, information necessary for maintenance, etc., and screws and bolts are used during work using an IC tag reader. By checking the bolts or the device, it is possible to prevent human errors when installing or removing screws, bolts, etc. in the correct position of the device using the appropriate one of a wide variety of tools. Has been done.

However, if an IC tag is attached to screws / bolts or a device to which they are attached and an IC tag reader is used to check the screws / bolts or the device during work, the operator can check the screws / bolts or the device in addition to the tools. In addition, it is necessary to have an IC tag reader. In addition, it is necessary to change the tool and the IC tag reader in order to perform the IC tag reading operation each time during the installation or removal work of screws, bolts, etc. of various types and sizes. Therefore, the man-hours increase and the time required for the work increases.

For example, there is a technique in which a screw or the like can be attached by using a device in which a tool, an antenna for reading an IC tag, and a reader device are integrated (for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2016-95730 US2013 / 0186951

However, in the technique described in Patent Document 2, since the device for attaching screws and bolts includes an antenna and a reader / writer terminal, the device becomes large and the operator holds it in his / her hand for work. It is difficult to apply to tools for. Alternatively, if a new electronic circuit or power supply is built into a tool that does not have a built-in conventional electronic circuit or power supply, there is a risk that handling restrictions will increase, resulting in higher costs and loss of conventional usability. There is.

Therefore, the present invention significantly increases the time required for the work by solving the above-mentioned problems, that is, eliminating the need to change the tool for the worker to hold and work when reading the IC tag. It is an object of the present invention to provide a tool capable of reading an IC tag without any problems.

In order to solve the above problems, the first aspect of the tool of the present invention is an IC tag detection unit that detects an IC tag, a reader / writer communication unit that communicates with a reader / writer terminal, and an IC tag detection unit and a reader. / A tag information transmission unit for connecting to a writer communication unit is provided, and the tag information transmission unit includes a core wire for transmitting information read from or written in the IC tag, and IC tag detection is provided. The portion includes an internal space formed by cutting out a part of metal, a part of the core wire is exposed in the internal space, and the exposed part in the internal space of the core wire is formed in a linear shape. Or, when the internal space is viewed in a plan view, the exposed portion is formed in a curved shape in a state where the exposed portion does not overlap with each other, and the end portion of the core wire is electrically connected to the metal constituting the internal space. Is .

Another aspect of the tool of the present invention is characterized in that at least a part of the core wire of the IC tag detection unit is exposed at a position offset from the central portion of the internal space.

Another side surface of the tool of the present invention is characterized in that the internal space of the IC tag detection unit is formed by cutting out the end portion of the tool so as to penetrate the upper surface and the lower surface including the side surface.

In another aspect of the tool of the present invention, the internal space of the IC tag detector is the end of the tool, including and penetrating the detection surface of the IC tag, including the corner between the lower surface and the side surface of the tool. It is characterized in that it is constructed by notching in a shape that does not.

In another aspect of the tool of the present invention, the internal space of the IC tag detector is the end of the tool, including and penetrating the detection surface of the IC tag, including the corner between the lower surface and the side surface of the tool. It is characterized in that it is not shaped and is formed by notching in a direction diagonal to the extending direction of the ridgeline of the corner portion.

Another aspect of the tool of the present invention is characterized in that the internal space of the IC tag detection unit is formed by cutting out from the detection surface of the IC tag so as to penetrate the surface opposite to the detection surface. And.

Another aspect of the tool of the present invention is characterized in that the internal space of the IC tag detection unit is formed by hollowing out a part of the detection surface of the IC tag.

The other side surface of the tool of the present invention is on a surface opposite to the detection surface of the IC tag, and further includes a mark provided at a position different from the core wire and corresponding to the internal space of the IC tag detection unit. It is characterized by that.

Another aspect of the tool of the present invention is characterized in that the tag information transmission unit is arranged in a groove provided on the outer peripheral surface of the tool, and the core wire is insulated from the metal part of the tool by an insulator. To do.

On the other side of the tool of the present invention, when the tool can be divided into two or more, the tag information transmission unit is divided into two or more together with the division of the tool, and is electrostatically induced and coupled at the connection point. It is characterized by that.

Another aspect of the tool of the present invention is that the reader / writer communication unit is a slit antenna composed of a slit formed in a part of a metal part of the tool and a part of a core wire exposed at the end of the slit. The core wire exposed in the slit is electrically connected to a metal portion in the slit.

Another aspect of the tool of the present invention is characterized in that the length of the inner circumference of the slit of the reader / writer communication unit is about the same as the communication wavelength with the reader / writer terminal.

Another aspect of the tool of the present invention is characterized in that the slit of the reader / writer communication unit is filled with a filler having a medium constant higher than 1.

Another aspect of the tool of the present invention is characterized in that it covers at least the central portion of the slit of the reader / writer communication unit and further includes a grip made of a material that does not have electrical conductivity and transmits a magnetic field. ..

The other side of the tool of the present invention further comprises a string-like portion made of a material that does not have electrical conductivity and is transparent to a magnetic field, and a reader / writer communication unit is provided inside the string-like portion. It is characterized by being a dipole antenna connected to a core wire.

The other side of the tool of the present invention further comprises a string-like portion made of a material that does not have electrical conductivity and is transparent to a magnetic field, and a reader / writer communication unit is provided inside the string-like portion. It is characterized by being a monopole antenna connected to a core wire.

Further, the second aspect of the tool of the present invention includes an IC tag detection unit that detects an IC tag, a reader / writer communication unit that communicates with a reader / writer terminal, and an IC tag detection unit and a reader / writer communication unit. The tag information transmission unit is provided with a tag information transmission unit to be connected, the tag information transmission unit includes a core wire for transmitting information read from the IC tag or written in the IC tag, and the reader / writer communication unit is a tool. It is a slit antenna composed of a slit formed in a part of a metal part and a part of a core wire exposed at the end of the slit, and the core wire exposed in the slit is electrically connected to the metal part in the slit. It is characterized by being.

Another aspect of the tool of the present invention is characterized in that the length of the inner circumference of the slit of the reader / writer communication unit is about the same as the communication wavelength with the reader / writer terminal.

Another aspect of the tool of the present invention is characterized in that the slit of the reader / writer communication unit is filled with a filler having a medium constant greater than 1.

Another aspect of the tool of the present invention is characterized in that it covers at least the central portion of the slit of the reader / writer communication unit and further includes a grip made of a material that does not have electrical conductivity and transmits a magnetic field. ..

Further, the third side surface of the tool of the present invention includes an IC tag detection unit for detecting an IC tag and a reader / writer terminal in a tool whose at least a part is made of metal and is used by being gripped by an operator. A reader / writer communication unit that communicates with, a tag information transmission unit that connects the IC tag detection unit and the reader / writer communication unit, and a string-shaped portion made of a material that does not have electrical conductivity and transmits a magnetic field. The reader / writer communication unit is provided inside the string-shaped portion, and the reader / writer communication unit is a part of a core wire that transmits information read from the IC tag or written to the IC tag. Is included, a part of the core wire is continuous with the other part of the core wire included in the tag information transmission unit, and the reader / writer communication unit is continuous with a part of the core wire and opposite to a part of the core wire. It comprises a conductor extending to the side, which is characterized by forming a dipole antenna together with a part of a core wire.

Further, the fourth side surface of the tool of the present invention includes an IC tag detection unit for detecting an IC tag and a reader / writer terminal in a tool whose at least a part is made of metal and is used by being gripped by an operator. A reader / writer communication unit that communicates with, a tag information transmission unit that connects the IC tag detection unit and the reader / writer communication unit, and a string-shaped portion made of a material that does not have electrical conductivity and transmits a magnetic field. The reader / writer communication unit is provided inside the string-shaped unit, and the reader / writer communication unit is a part of a core wire that transmits information read from the IC tag or written to the IC tag. A part of the core wire is continuous with another part of the core wire included in the tag information transmission unit, and a part of the core wire constitutes a monopole antenna .

According to the present invention, when the IC tag is read, it is not necessary for the operator to change the tool for holding the work in his / her hand, so that it is possible to prevent a significant increase in the time required for the work.

It is a figure which shows the monkey wrench 1. It is a figure for demonstrating the example of IC tag 3. It is a figure for demonstrating the example of IC tag 3. It is an enlarged perspective view of the IC tag detection unit 21a. It is a figure for demonstrating the equivalent circuit of the electromagnetic induction coupling of an IC tag detection part 21a and a coil antenna 33. It is a figure which shows the equivalent circuit of a transformer model. It is a figure for demonstrating the generated current and a magnetic field. It is a figure for demonstrating the generated current and a magnetic field. It is an enlarged view of the IC tag detection unit 21a and the IC tag 3a. 9 is a cross-sectional view taken along the line AA of FIG. It is an enlarged perspective view of the IC tag detection unit 21b. It is an enlarged view of the IC tag detection unit 21b and the IC tag 3a. It is a figure for demonstrating the mark 61. It is an enlarged perspective view of the IC tag detection unit 21c. It is an enlarged perspective view of the IC tag detection unit 21d. It is an enlarged perspective view of the IC tag detection unit 21e. It is a figure for demonstrating the magnetic field generated by the IC tag detection part 21e. It is a figure for demonstrating the mark 61. It is a figure for demonstrating the tag information transmission part 22a. It is a figure for demonstrating the tag information transmission part 22a. It is a figure for demonstrating the tag information transmission part 22a. It is a figure for demonstrating the information transmission part 22b. It is a figure for demonstrating the information transmission part 22c. It is a figure for demonstrating the reader / writer communication part 23a. It is a figure for demonstrating the reader / writer communication part 23a. It is a figure for demonstrating the reader / writer communication part 23a. It is a figure for demonstrating the reader / writer communication part 23a. It is a figure for demonstrating the reader / writer communication part 23b. It is a figure for demonstrating the reader / writer communication part 23c. It is a figure for demonstrating the reader / writer communication part 23d. It is a figure for demonstrating the reader / writer communication part 23e and the reader / writer communication part 23f. It is a figure for demonstrating the reader / writer communication part 23e. It is a figure for demonstrating the reader / writer communication part 23f. It is a figure for demonstrating the reader / writer communication part 23g. It is an enlarged perspective view of the IC tag detection part 21f of the spectacle wrench 125 which is an example to which this invention is applied. It is a figure for demonstrating the socket wrench 131 which is an example to which this invention is applied. It is a figure for demonstrating the socket wrench 131 which is an example to which this invention is applied. 36 is an enlarged view of a connection portion between the tip portion 141 and the grip portion 142 of FIGS. 36 and 37.

Hereinafter, the information transmission / reception system according to the embodiment of the present invention will be described with reference to FIGS. 1 to 38.

A monkey wrench (sometimes referred to as a monkey wrench), which is an example of the tool of the present invention, will be described with reference to FIGS. 1 to 34.

The monkey wrench 1 in FIG. 1 has the width of the portion that grips the bolt 2, that is, between the upper jaw (sometimes referred to as a fixed jaw) 12 and the lower jaw (sometimes referred to as a movable jaw) 11. It is a wrench whose width can be changed by a worm gear according to the size of the head portion of the bolt 2. That is, the monkey wrench 1 is a tool that can be used for attaching various types of bolts 2 and nuts (not shown). It is assumed that the monkey wrench 1 is made of metal in whole or at least a part thereof, and here, at least the upper jaw 12 and the grip portion 13 are made of metal. The monkey wrench 1 corresponds to a tool.

An IC tag 3 is attached to the bolt 2. The IC tag 3 records unique information such as the type of the bolt 2 and the device or component for attaching the bolt 2 and the attachment location. Details of the IC tag 3 will be described later with reference to FIGS. 2 and 3.

The monkey wrench 1 has an IC tag detection unit 21 at a tip portion (for example, a portion that does not hit the bolt during work) of the upper jaw 12 that does not interfere with the attachment work of the bolt 2 and the like. The IC tag detection unit 21 detects the IC tag 3 attached to the bolt 2 and reads the information stored in the IC chip 32. Since the IC tag detection unit 21 is provided at the tip of the upper jaw 12 of the monkey wrench 1, the operation of causing the IC tag detection unit 21 to be detected close to the IC tag 3 and the bolt 2 being attached by the monkey wrench 1. Or, the transition distance from the removal operation is short and smooth, which is preferable.

For the IC tag communication between the IC tag 3 and the IC tag detection unit 21, for example, a radio wave having a frequency of 920 MHz can be used. In FIG. 1, an IC tag detection unit 21a, which is a first example of the IC tag detection unit 21, is shown. Details of the IC tag detection unit 21 will be described later with reference to FIGS. 4 to 18.

The information read by the IC tag detection unit 21 is supplied to the reader / writer communication unit 23 via the tag information transmission unit 22. (In FIG. 1, a reader / writer communication unit 23a, which is a first example of the reader / writer communication unit 23, is shown.) In other words, the reader / writer terminal 4 has an IC tag 3 and a monkey. When information is exchanged via the wrench 1, a high-frequency (for example, 920 MHz) current or voltage is supplied to the tag information transmission unit 22 (details of this will be described later as a description of the slot antenna in FIG. 26). .. The tag information transmission unit 22 includes a core wire having electrical conductivity (details will be described later), and a high-frequency current flows through the core wire. Details of the tag information transmission unit 22 will be described later with reference to FIGS. 19 to 23. It is desirable that the reader / writer terminal 4 be carried in the vicinity of an arm or the like on which an unillustrated worker works.

The reader / writer communication unit 23 exchanges information with the reader / writer terminal 4. The reader / writer communication unit 23 transmits the information supplied via the tag information transmission unit 22 to the reader / writer terminal 4. Details of the reader / writer communication unit 23 will be described later with reference to FIGS. 24 to 34.

The reader / writer terminal 4 transmits the received information to the server 6 via the network 5. Alternatively, the reader / writer terminal 4 may have a built-in role of the network 5 or the server 6. Here, the case where each role is separated is shown as a representative. Information about the bolt 2 is recorded in the server 6, and processing related to management necessary for the process is executed. As a result, the unique information of the bolt 2 attached to the predetermined position by the monkey wrench 1 can be managed by the server 6.

For example, when the stock quantity of the bolt 2 is recorded in the server 6, the server 6 can grasp the stock quantity based on the received information, and orders the bolt 2 as needed. It is possible to perform processing.

Further, for example, the server 6 may record information such as the bolt 2 and the parts to which the bolt 2 is to be attached. For example, an IC tag 3 in which unique information of the part is recorded is attached to a predetermined place such as a part (not shown) to which the bolt 2 is to be attached, and the IC tag 3 and the bolt 2 attached to the part are attached. The attached IC tag 3 is continuously read by the IC tag detection unit 21, transmitted to the reader / writer terminal 4 via the tag information transmission unit 22 and the reader / writer communication unit 23, and managed by the server 6. You may be able to do it. As a result, the server 6 can manage which part of which part the specific bolt 2 is attached to.

Further, when the wrong bolt 2 is attached, the server 6 may transmit an error message and transmit it to, for example, a reader / writer terminal 4 owned by the operator via the network 5. The reader / writer terminal 4 can output the received error message and notify the operator that the component is incorrect. This makes it possible to prevent defects in the attachment of parts.

Further, if necessary, the information to be recorded in the IC tag 3 may be transmitted from the server 6 and transmitted to the reader / writer terminal 4 via the network 5. The reader / writer communication unit 23 supplies the information supplied from the reader / writer terminal 4 to the IC tag detection unit 21 via the tag information transmission unit 22. The IC tag detection unit 21 can record the supplied information in the IC tag 3.

Next, an example of the IC tag 3 will be described with reference to FIGS. 2 and 3.

For the IC tag 3, for example, a small coil antenna type IC tag 3a shown in FIG. 2 can be used. As the IC tag 3a, for example, it is preferable to use a small tag (size 2.5 mm × 2.5 mm × 0.4 mm) such as Hitachi Kasei IM5-PK2525. The IC tag 3a has an IC chip 32 on which unique information necessary for maintenance management is recorded and a coil antenna 33 for communicating with the outside on a substrate 31.

Further, as the IC tag 3, for example, as shown in FIG. 3, a small radiation antenna type IC tag 3b can be used. The IC tag 3b has an IC chip 32 on which unique information necessary for maintenance management is recorded on a seal substrate 34, and a radial antenna 35 for communicating with the outside. The antenna 35 shows an example composed of a coil antenna portion and a radiation antenna portion.

Next, the IC tag detection unit 21a, which is the first example of the IC tag detection unit 21, will be described with reference to FIGS. 4 to 10.

FIG. 4 is an enlarged perspective view of the IC tag detection unit 21a seen from the direction of the arrow B in FIG. The IC tag detection unit 21a is formed in a space created by cutting out the end portion of the upper jaw 12 so as to penetrate the upper surface and the lower surface (detection surface of the IC tag 3) including the side surface. This notch is sufficiently small without impairing the strength of the monkey wrench 1. For example, the width of the notch can be about 1.3 mm and the depth of the notch can be about 4.0 mm. In the configuration shown in FIG. 1, the IC tag detection unit 21a is not located on the opening side of the upper jaw 12 facing the lower jaw 11 so as not to be damaged by the bolt 2. , On the contrary, the case where it is located on the outer peripheral side of the upper jaw 12 is shown.

Hereinafter, the space created by the notch is referred to as an internal space S1, and the space outside the space is referred to as an external space. The core wire 41 of the tag information transmission unit 22 projects into the internal space S1, and is electrically connected to the metal portion inside the notch, that is, the portion functioning as a ground by soldering, for example, by the connection point 42. Has been done. The core wire 41 exposed in the internal space S1 does not have to be linear as shown in FIG. 4, and may be curved in a curved shape in the internal space S1, but the core wires 41 are extended to each other to form an internal space. It is desirable that there is no portion where the core wires 41 intersect with each other, which occurs when the loop antenna is formed by extending and winding the core wires 41, such as connecting to the ground after making one or more turns in S1. This is because the more complicated the internal structure inside the IC tag detection unit 21a, the more disadvantageous it is against the impact applied to the tool. In other words, the core wire 41 does not have a linear or overlapping portion such that the angles in the circumferential direction are the same when viewed in a plane (projected on a plane). That is, the core wire 41 has a linear shape or a shape close to it, and does not have the shape of a loop antenna.

The internal space S1 is filled with a filler 43 that does not have electrical conductivity and transmits a magnetic field, such as a resin. When the filler 43 has a color different from that of the metal parts around it, the worker confirms the position of the IC tag detection unit 21a while the right-handed worker is working with the monkey wrench shown in FIG. Therefore, the IC tag detection unit 21a can be easily brought close to the IC tag 3.

When the opaque filler 43 is filled in the internal space S1, the core wire 41 and the connection point 42 are invisible from the external space, but in order to explain the positions and the like, the filler 43 is transmitted through the filler 43 in each drawing. The core wire 41 and the connection point 42 will be illustrated and described.

When the reader / writer terminal 4 communicates with the IC tag 3 via the monkey wrench 1, a high-frequency current or voltage is supplied to the tag information transmission unit 22. That is, a high-frequency current or voltage is supplied to the core wire 41 of the IC tag detection unit 21a (details of this will be described later with reference to FIGS. 5 to 8 and the like). Since the metal portion of the upper jaw 12 functions as a ground, the core wire 41 having electrical conductivity is in a short-circuited state at the connection point 42, and a large current seen in the short-circuited state is generated in the core wire 41. Therefore, the magnetic field φ generated by the high-frequency current flowing through the core wire 41 becomes large, and it is possible to pass through the portion filled with the filler 43 in the internal space S1 surrounded by the metal portion and spread to the external space. Become.

Next, the exchange of information between the IC tag detection unit 21a and the IC tag 3a will be described with reference to FIGS. 5 to 10.

FIG. 5 shows an equivalent circuit showing an electromagnetic induction coupling between the core wire 41 and the coil antenna 33 of the IC tag 3a.

Assuming that the point where the core wire 41 protrudes into the internal space S1 of the IC tag detection unit 21a (the point opposite to the connection point 42 in the internal space S1) and the connection point 42 are P1 and Q1, respectively, a high frequency current is supplied. flowing a large short circuit current _{i 1} is the core wire 41 of the IC tag detecting section 21a. A part of the magnetic field φ generated by the current i ₁ , that is, the magnetic field φ 1 penetrates the coil antenna 33 (there is also a leakage magnetic field indicated by the magnetic field φ 2 in the figure), so that the current i ₂ is generated in the coil antenna 33. The current flows and the voltage required for the IC chip 32 to operate is generated. The IC chip 32 operates by this electromagnetic induction.

This electromagnetic induction coupling will be described as a transformer coupling with reference to FIGS. 6 to 8.

FIG. 6 shows an equivalent circuit of the transformer model. The voltage between both ends P1 and Q1 on the primary side of the transformer is V ₁ , the number of turns is N ₁ , the voltage generated between both ends P2 and Q2 of the load 53 on the secondary side of the transformer is V ₂ , and the number of turns is N. _{When it is 2} , the following formula (1) holds, where k is the coupling coefficient. The coupling coefficient k is a value of 0 to 1 mainly determined by the distance between the core wire 41 and the coil antenna 33.

Formula (1)
N ₁ / N ₂ = kV ₁ / V ₂ ... (1)

The coupling coefficient k is a value of 0 to 1 mainly determined by the distance between the core wire 41 and the coil antenna 33. That is, the coupling coefficient k, of the magnetic field generated by the current i ₁ flowing through the primary coil, the magnetic field φ1 as the active ingredient of the transformer coupling, but determined by the ratio of the leakage component φ2 which does not contribute to the transformer coupling.

FIG. 7 shows a schematic view of the direction of the current and the generated magnetic field φ when the IC tag detection unit 21a and the IC tag 3a are close to each other. In FIG. 7, the magnetic field φ that penetrates from the front side to the other side of the paper surface in the figure with the symbol × in the circle is the symbol of the black dot in the circle, from the other side to the front side of the paper surface in the figure. The magnetic field φ that penetrates toward each other is shown. The primary side coil of FIG. 6 corresponds to the core wire 41 of the IC tag detection unit 21a of FIG. 7, and the secondary side coil of FIG. 6 corresponds to the coil antenna 33 of the IC tag 3a of FIG. Further, the load 53 in FIG. 6 corresponds to the IC chip 32 in FIG. 7. _{The current i 1} flowing through the primary coil corresponds to the short-circuit current that flows when the core wire 41 is short-circuited by the connection point 42. That is, the voltage for operating the IC chip 32, which is generated when the IC tag detection unit 21a and the IC tag 3a are close to each other, can be obtained by using the equation (1).

The core wires 41 corresponding to the primary coil in FIG. 6 do not intersect with each other when viewed in a plane (projected on a plane), that is, do not form a loop coil, so that the core wires 41 are wound once or less and are short. It is a conductor. Therefore, it is necessary to obtain the number of turns N1 corresponding to the coil on the primary side of FIG. Therefore, when the coil antenna 33 is a square coil, _one of the four sides of the square is considered by substituting the ratio of which section of the four sides of the square the generation section of the magnetic field φ1 applied to the transformer coupling occupies. It corresponds to. That is, the primary coil can be regarded as being wound 1/4 times.

Then, the number of turns of the coil antenna 33 of the IC tag 3a is set to, for example, 2.5, _{and the ratio of the magnetic field φ 1} which is the active component of the transformer coupling and the leakage component φ ₂ which does not contribute to the transformer coupling is the same, that is, When the coupling coefficient k is 0.5, the voltage V ₂ for operating the IC chip 32 can be obtained by the following mathematical formula (2).

Formula (2)
V ₂ = 0.5 x V ₁ x 2.5 / 0.25 = 5 V ₁ ... (2)

That is, as shown in FIG. 8, at least a part of the magnetic field generated by the short circuit current i ₁ due to the core wire 41 is connected to the connection point 42 phi penetrates the coil antenna 33 of the IC tag 3a, electromagnetic Inductive coupling occurs, current flows through the coil antenna 33, and the voltage required for the IC chip 32 to operate is generated. The generated voltage is proportional to the number of turns of the coil antenna 33. Therefore, even though the core wires 41 of the IC tag detection unit 21a do not intersect with each other when viewed in a plane (projected on a plane), that is, they do not have an antenna in the shape of a coil. Instead, the IC chip 32 operates. As a result, the IC tag detection unit 21a can detect the IC tag 3 and exchange information without including a coil antenna having one or more turns, which requires a certain size. As a result, the IC tag detection unit 21a can be provided in a minute space even when the monkey wrench 1 needs to have sufficient strength or miniaturization.

Next, FIG. 9 shows an enlarged view when the operator brings the IC tag detection unit 21a of the monkey wrench 1 described with reference to FIG. 1 close to the IC tag 3a. The alternate long and short dash line C1 shown in FIG. 9 is the center line in the longitudinal direction of the cutout portion of the IC tag detection unit 21a (in other words, the center line in the longitudinal direction of the internal space S1), and the alternate long and short dash line C2 is the IC tag. It is the center line of 3a. When the filler 43 of the IC tag detection unit 21a is opaque, the core wire 41 and the connection point 42 cannot be confirmed by the operator, and even if a transparent material is used for the filler 43, the operator cannot confirm it. The core wire 41 and the connection point 42 are very small with respect to the volume of the notched portion forming the internal space S1 which can be easily confirmed from the above. Therefore, as shown in FIG. 9, when the IC tag detection unit 21a is brought close to the IC tag 3a, the operator is asked to the notched portion of the IC tag detection unit 21a with respect to the center line C2 of the IC tag 3a. It is considered that the center line C1 in the longitudinal direction is to be aligned.

Here, when the position of the core wire 41 is located directly above the IC chip 32 of the IC tag 3a, the current generated in the coil antenna 33 due to the magnetic field φ generated by the current flowing in the core wire 41 sandwiches the IC chip 32. The IC tag detection unit 21a cannot detect the IC tag 3a because they cancel each other out on both sides. In order to prevent this, at least a part of the core wire 41 is offset from the center of the notched portion of the IC tag detection unit 21a (for example, as shown in FIG. 9, the center line C1 in the longitudinal direction of the notched portion). It is preferable that the position C3) is offset from the position C3) by a predetermined distance. The IC tag detection unit 21a may be at a position offset from the center in the longitudinal direction of the cutout portion, but may also be at a position offset from the center in the lateral direction. Further, in the internal space S1, the portion where the core wire 41 is exposed becomes the place where the magnetic field is generated, and when the distance of the internal space S1 from the core wire 41 to the connection point 42 is shortened, the generation of the magnetic field is reduced. However, if the distance of the internal space S1 from the core wire 41 to the connection point 42 is long, the magnetic field that goes out from the internal space S1 to the external space increases, the detection sensitivity increases, and the mechanical strength decreases. Therefore, the position where the core wire 41 protrudes into the internal space S1 (the point opposite to the connection point 42 in the internal space S1) and the position of the connection point 42 provide a constant detection sensitivity while maintaining a predetermined strength of the tool. It is preferable to maintain a predetermined distance (length) that can be secured (the core wire 41 has a length equal to or longer than a predetermined length in the internal space S1) and to be close to the detection surface of the IC tag 3a.

FIG. 10 is a cross-sectional view taken along the line AA of FIG. By placing at least a portion of which is offset from the center of the notch portion of the IC tag detecting section 21a positions of the core wire 41, the magnetic field φ generated by the short circuit current i ₁ flowing through the core 41, the square of the coil antenna 33 Since it penetrates one of the four sides, the current i ₂ generated in the coil antenna 33 does not cancel each other out, and the IC tag 3a is activated. Therefore, the IC tag detection unit 21a can detect the IC tag 3a.

Next, with reference to FIGS. 11 to 14, among the other configuration examples of the IC tag detection unit 21, the IC tag detection unit 21a is formed by a notch including a corner portion of the upper jaw 12, similarly to the IC tag detection unit 21a described above. The IC tag detection unit 21b and the IC tag detection unit 21c having the internal space S1 will be described.

FIG. 11 is an enlarged perspective view of the IC tag detection unit 21b when the monkey wrench 1 is turned upside down in the opposite direction to the state shown in FIG. 1 and viewed from the direction of arrow B in FIG. 1, according to another configuration example. is there.

The IC tag detection unit 21b uses the back surface of the end portion of the upper jaw 12 (the surface adjacent to the IC tag 3; the lower surface of the upper jaw 12 in FIG. 1) and the corner portion between the back surface and the side surface of the upper jaw 12. It is formed in the internal space S1 which is cut out in a shape that does not penetrate the surface while being included. This notch is sufficiently small that does not impair the strength of the monkey wrench 1. For example, as an example of the IC tag 3a, Hitachi Kasei IM5-PK2525 type that communicates in the UHF band (860 to 960 MHz) is detected. In this case, the width and height of the notch (depth from the detection surface) can be about 2.5 mm, and the depth of the notch (dimension in the longitudinal direction along the back surface) can be about 5.0 mm. Similar to the IC tag detection unit 21a described above, the core wire 41 of the tag information transmission unit 22 protrudes into the internal space S1 of the IC tag detection unit 21b, and the connection point 42 allows the metal portion inside the notch to be soldered, for example. It is electrically connected by soldering. The internal space S1 is filled with a filler 43 that does not have electrical conductivity and transmits a magnetic field, such as a resin.

FIG. 12 shows an enlarged view of the IC tag detection unit 21b and the IC tag 3a when the operator of the monkey wrench 1 provided with the IC tag detection unit 21b brings the IC tag detection unit 21b close to the IC tag 3a. Like the IC tag detecting section 21a as described above, the core wire 41 located in the IC tag detecting section 21b, a large current i ₁ seen in a short-circuit condition occurs. Thus, the magnetic field φ generated by the high frequency current i ₁ flowing through the core wire 41, as shown in FIG. 12, passes through the portion filled with the filler 43 in the internal space S1 surrounded by the metal part, the outside _{The current i 2} flows through the coil antenna 33 by spreading in the space and penetrating at least a part of the coil antenna 33. As a result, the induced voltage required for the IC chip 32 to operate is generated, and the IC chip 32 operates. Therefore, the IC tag detection unit 21b can detect the IC tag 3 and exchange information. Further, in the internal space S1, the portion where the core wire 41 is exposed becomes the place where the magnetic field is generated, and when the distance of the internal space S1 from the core wire 41 to the connection point 42 is shortened, the generation of the magnetic field is reduced. However, if the distance of the internal space S1 from the core wire 41 to the connection point 42 is long, the magnetic field that goes out from the internal space S1 to the external space increases, the detection sensitivity increases, and the mechanical strength decreases. Therefore, the position where the core wire 41 protrudes into the internal space S1 (the point opposite to the connection point 42 in the internal space S1) and the position of the connection point 42 provide a constant detection sensitivity while maintaining a predetermined strength of the tool. It is preferable to maintain a predetermined distance (length) that can be secured (the core wire 41 has a length equal to or longer than a predetermined length in the internal space S1) and to be close to the detection surface of the IC tag 3a.

Further, when a right-handed worker is using the monkey wrench 1 provided with the IC tag detection unit 21b, the worker cannot visually check the IC tag detection unit 21b, so that the worker can detect the IC tag. It becomes difficult to grasp the position of the portion 21b and bring it close to the IC tag 3 correctly. Therefore, it is preferable to add a mark so that the position of the IC tag detection unit 21b can be grasped while the operator is using it. FIG. 13 is an enlarged view of the tip portion of the upper jaw 12 in a state where a right-handed worker is using the monkey wrench 1 provided with the IC tag detection unit 21b. As shown in FIG. 13, the mark 61 is attached to the position corresponding to the internal space S1 slightly away from the position of the core wire 41 of the IC tag detection unit 21b. Worker, by matching the marks 61 in the central portion of the IC tag 3a, as described with reference to FIG. 10, the magnetic field φ generated by the short circuit current i ₁ flowing through the core 41, the four sides of the square of the coil antenna 33 Penetrate one side of. _{Therefore, it is possible to prevent the currents i 2} generated in the coil antenna 33 from canceling each other out, and it is possible to reliably detect the IC tag 3.

FIG. 14 is an enlarged perspective view of the IC tag detection unit 21c seen from the direction of the arrow B in FIG. 1 with the monkey wrench 1 of FIG. 1 turned inside out.

The IC tag detection unit 21c uses the back surface of the end portion of the upper jaw 12 (the surface facing the IC tag 3; the lower surface of the upper jaw 12 in FIG. 1) and the corner portion between the back surface and the side surface of the upper jaw 12. It is formed in the internal space S1 which is formed by cutting out the corner portion in an oblique direction with respect to the stretching direction so as to include the shape but not to penetrate the surface. This notch is small enough without compromising the strength of the monkey wrench 1. Similar to the IC tag detection unit 21a and the IC tag detection unit 21b described above, the core wire 41 of the tag information transmission unit 22 protrudes into the internal space S1 of the IC tag detection unit 21c, and the metal inside the notch is formed by the connection point 42. It is electrically connected to the portion by, for example, soldering. The internal space S1 is filled with a filler 43 that does not have electrical conductivity and transmits a magnetic field, such as a resin. The structure of the IC tag detection unit 21c is such that the corner portion between the back surface and the side surface of the upper jaw 12 is cut out diagonally with respect to the extending direction, so that the notched portion of the corner portion impacts the core wire 41 from the outside. It has the characteristic of playing a protective role against.

Also in the IC tag detecting section 21c, similarly to the IC tag detecting section 21a and the IC tag detecting section 21b described above, the core wire 41, a large current _{i 1} seen in a short-circuit condition occurs. Thus, the magnetic field φ generated by the high frequency current i ₁ flowing through the core 41, filler 43 in the interior space S1, which is surrounded by the metal part passes through the portion filled, spreading to the external space, at least one of which The portion penetrates the coil antenna 33. As a result, the current i ₂ flows through the coil antenna 33. As a result, the induced voltage required for the IC chip 32 to operate is generated, and the IC chip 32 operates. Therefore, the IC tag detection unit 21c can detect the IC tag 3 and exchange information. Further, in the internal space S1, the portion where the core wire 41 is exposed becomes the place where the magnetic field is generated, and when the distance from the core wire 41 to the connection point 42 is shortened, the generation of the magnetic field is reduced. However, if the distance of the internal space S1 from the core wire 41 to the connection point 42 is long, the magnetic field that goes out from the internal space S1 to the external space increases, the detection sensitivity increases, and the mechanical strength decreases. Therefore, the position where the core wire 41 protrudes into the internal space S1 (the point opposite to the connection point 42 in the internal space S1) and the position of the connection point 42 provide a constant detection sensitivity while maintaining a predetermined strength of the tool. It is preferable to maintain a predetermined distance (length) that can be secured (the core wire 41 has a length equal to or longer than a predetermined length in the internal space S1) and to be close to the detection surface of the IC tag 3a.

Further, even when a right-handed worker is using the monkey wrench 1 provided with the IC tag detection unit 21c, it is difficult for the worker to grasp the position of the IC tag detection unit 21c. Therefore, it is preferable to add a mark so that the position of the IC tag detection unit 21c can be grasped while the operator is using it. Similarly to the IC tag detection unit 21b, the IC tag detection unit 21c also attaches the mark 61 to a position slightly distant from the position of the core wire 41 of the IC tag detection unit 21c when viewed in a plan view. Thereby, as explained with reference to FIG. 10, the magnetic field φ generated by the short circuit current i ₁ flowing through the core wire 41, through the side of the four sides of the square of the coil antenna 33. _{Therefore, it is possible to prevent the currents i 2} generated in the coil antenna 33 from canceling each other, and it is possible to reliably detect the IC tag 3.

In the IC tag detection units 21a to 21c, the communication sensitivity differs depending on the size and shape of the internal space S1, and the strength of the corresponding portion of the monkey wrench 1 also differs. Among the IC tag detection units 21a to 21c, the IC tag detection unit 21c has the highest communication sensitivity, followed by the IC tag detection unit 21a having the highest communication sensitivity and the IC tag detection unit 21b having the lowest communication sensitivity. .. However, the strength of the corresponding portion of the monkey wrench 1 is strongest when the IC tag detection unit 21b is used, then is strong when the IC tag detection unit 21a is used, and when the IC tag detection unit 21c is used. The weakest. That is, which of the IC tag detection units 21a to 21c is provided on the monkey wrench 1 can be determined by the required communication sensitivity and strength.

Next, with reference to FIGS. 15 to 17, among the other configuration examples of the IC tag detection unit 21, the internal space S1 formed by a notch on any plane that does not include the corner portion of the upper jaw 12. The IC tag detection unit 21d and the IC tag detection unit 21e having the above will be described.

FIG. 15 shows an enlarged perspective view of the IC tag detection unit 21d when the monkey wrench 1 of FIG. 1 is turned inside out (the back surface is the upper surface when the monkey wrench 1 is used by a right-handed worker). It is a figure.

The IC tag detection unit 21d is formed in the internal space S1 created by cutting out a part of the upper jaw 12 in a cylindrical shape so as to include the detection surface of the IC tag 3 and penetrate (so as to form a hole). Will be done. This notch is sufficiently small without impairing the strength of the monkey wrench 1, and for example, the diameter of the notch cylinder can be about 5.0 mm. Similar to the IC tag detection units 21a to 21c described above, the core wire 41 of the tag information transmission unit 22 protrudes into the internal space S1 of the IC tag detection unit 21d, and the connection point 42 allows the metal portion inside the notch to be formed, for example. , It is electrically connected by soldering. The internal space S1 is filled with a filler 43 that does not have electrical conductivity and transmits a magnetic field, such as a resin. When the filler 43 has a color different from that of the metal parts around it, the worker confirms the position of the IC tag detection unit 21d while the right-handed worker is working with the monkey wrench shown in FIG. Therefore, the IC tag detection unit 21d can be easily brought close to the IC tag 3.

Also in the IC tag detecting section 21d, like the IC tag detecting section 21 a - 21 c, the core wire 41, a large current _{i 1} seen in a short-circuit condition occurs. Thus, the magnetic field φ generated by the high frequency current i ₁ flowing through the core 41, filler 43 in the interior space S1, which is surrounded by the metal part passes through the portion filled, spreading to the external space, at least one of which The portion penetrates the coil antenna 33. As a result, the current i ₂ flows through the coil antenna 33, the induced voltage required for the IC chip 32 to operate is generated, and the IC chip 32 operates. Therefore, the IC tag detection unit 21d can detect the IC tag 3 and exchange information.

Further, when the filler 43 of the IC tag detection unit 21d is opaque, the core wire 41 and the connection point 42 cannot be confirmed by the operator, and even if a transparent material is used for the filler 43, the core wire 41 and the connection point 42 cannot be confirmed. The core wire 41 and the connection point 42 are very small with respect to the volume of the notched portion forming the internal space S1 that can be easily confirmed by the operator. Therefore, when the IC tag detection unit 21d is brought close to the IC tag 3, the operator aligns the circular center of the through hole portion when the IC tag detection unit 21d is viewed in a plan view with respect to the center of the IC tag 3. It is thought that it will try.

Here, when the position of the core wire 41 is located directly above the IC chip 32 of the IC tag 3, as described above, the current generated in the coil antenna 33 due to the magnetic field φ cancels out on both sides of the IC chip 32. The IC tag detection unit 21d cannot detect the IC tag 3 because it matches. In order to prevent this, at least a part of the core wire 41 is offset by a predetermined distance from the center line C1 passing through the center of the circle when the through hole of the IC tag detection unit 21d is viewed in a plane, as in the case described above. It is preferable to arrange it at C3.

Further, it goes without saying that the notch for forming the internal space S1 does not have to be cylindrical and may have any shape as long as it does not impair the strength of the monkey wrench 1. No.

Next, FIG. 16 shows an IC tag detection unit when the monkey wrench 1 of FIG. 1 is turned inside out (the back surface is the upper surface when the monkey wrench 1 is used by a right-handed worker). It is an enlarged perspective view of 21e.

The IC tag detection unit 21e cuts through any plane of the upper jaw 12 (in FIG. 16, the plane that becomes the upper side when the monkey wrench 1 of FIG. 1 is turned inside out) without penetrating it (in FIG. 16). It is formed in the interior space S1 created by the notch (so as to form a dent). This notch is sufficiently small so as not to impair the strength of the monkey wrench 1. For example, the diameter of the notch is about 5.0 mm and the height (depth from the detection surface) is about 3.0 mm. can do. Similar to the IC tag detection units 21a to 21d described above, the core wire 41 of the tag information transmission unit 22 projects into the internal space S1 of the IC tag detection unit 21e, and the connection point 42 extends the core wire 41 to the metal portion inside the notch, for example. , It is electrically connected by soldering. The internal space S1 is filled with a filler 43 that does not have electrical conductivity and transmits a magnetic field, such as a resin. It is preferable that at least one part of the core wire 41 is arranged at a position C3 offset by a predetermined distance from the center line C1 of the internal space S1 as in the case described above.

Also in the IC tag detecting section 21e, as with the IC tag detecting section 21a to 21d, the core wire 41, a large current _{i 1} seen in a short-circuit condition occurs. Thus, the magnetic field φ generated by the high frequency current i ₁ flowing through the core wire 41, as shown in FIG. 17, passes through the portion filled with the filler 43 in the internal space S1 surrounded by the metal part, the outside Spread in space. As shown in FIG. 17, the internal space S1 of the IC tag detection unit 21e does not penetrate the monkey wrench 1. Therefore, the magnetic field φ spreads only in the direction of the hollowed-out opening portion. Then, when at least a part of the magnetic field φ penetrates the coil antenna 33, a current i ₂ flows through the coil antenna 33, an induced voltage required for the IC chip 32 to operate is generated, and the IC chip 32 is generated. Works. Therefore, the IC tag detection unit 21e can detect the IC tag 3 and exchange information.

Further, when a right-handed worker is using the monkey wrench 1 provided with the IC tag detection unit 21e, it is difficult for the worker to grasp the position of the IC tag detection unit 21e. Therefore, it is preferable to add a mark so that the position of the IC tag detection unit 21e can be grasped while the operator is using it. As shown in FIG. 18, in the IC tag detection unit 21e as well, the mark 61 corresponds to the internal space S1 slightly separated from the position of the core wire 41 of the IC tag detection unit 21c, similarly to the IC tag detection unit 21b. By attaching it to the position, it is possible to reliably detect the IC tag 3 as described with reference to FIG.

In the IC tag detection unit 21d and the IC tag detection unit 21e, the communication sensitivity differs depending on the size and shape of the internal space S1, and the strength of the corresponding portion of the monkey wrench 1 also differs. When the IC tag detection unit 21d and the IC tag detection unit 21e are compared, the communication sensitivity thereof is better in the shape of the IC tag detection unit 21d. However, the strength of the corresponding portion of the monkey wrench 1 is superior when the shape of the IC tag detection unit 21e is used. That is, which of the IC tag detection unit 21d and the IC tag detection unit 21e is provided on the monkey wrench 1 can be determined by the required communication sensitivity and strength.

Needless to say, a plurality of IC tag detection units 21a to 21e may be provided in the monkey wrench 1.

Next, the tag information transmission unit 22 will be described with reference to FIGS. 19 to 23.

The tag information transmission unit 22a, which is a first example of the tag information transmission unit 22, will be described with reference to FIGS. 19 to 21.

FIG. 19 is an enlarged perspective view of the upper jaw 12 of the monkey wrench 1 as viewed from the direction of the arrow A in FIG. A groove 65 thicker than the core wire 41 is formed on the side surface of the monkey wrench 1 from the upper jaw 12 to the grip portion 13. In the tag information transmission unit 22a, the core wire 41 extends to the reader / writer communication unit 23 (see FIG. 1) so as to be inside the groove 65 and not to come into contact with the metal portion of the groove 65.

In the tag information transmission unit 22a, as shown in FIG. 19, only a portion necessary for projecting the core wire 41 into the internal space S1 of the IC tag detection unit 21 due to the structure of the tool penetrates the inside of the metal in a tunnel shape. In many other parts, the inside of the groove 65 formed along the side surface from the upper jaw 12 to the grip portion 13 of the monkey wrench 1 is configured to be wired. As shown in FIG. 20, the groove 65 portion formed on the side surface of the monkey wrench 1 is filled with an insulating material 70 such as resin so that the core wire 41 does not come into contact with the metal portion of the groove 65. (This structure is sometimes called a semi-coaxial cable.) Further, as shown in FIG. 21, the portion where the insulator of the groove 65 is exposed on the surface of the monkey wrench 1 is a metal thin film such as aluminum. By covering with 71, that is, by forming a shape equivalent to a well-known coaxial cable by covering the semi-coaxial cable with a metal thin film 71, the tag information transmission unit 22a is blocked from external radio noise. It is preferable to be able to do so.

Next, the tag information transmission unit 22b, which is a second example of the tag information transmission unit 22, will be described with reference to FIG. 22.

The tag information transmission unit 22b is a coaxial cable, the core wire 41 is covered with an insulating coating 81, and the outside thereof is covered with an outer conductor 82. When the tag information transmission unit 22b is arranged in the groove 65 formed on the side surface of the monkey wrench 1 like the tag information transmission unit 22a, the outer conductor 82 can be brought into contact with the metal portion of the groove 65 to be grounded. Although it is possible, if necessary, the outer conductor 82 may be connected to any position of the metal portion of the monkey wrench 1.

Next, the tag information transmission unit 22c, which is a third example of the tag information transmission unit 22, will be described with reference to FIG. 23.

The tag information transmission unit 22c is a twisted pair cable in which two cables whose lead wires are covered with an insulating coating are twisted together, one of which is a core wire 41 covered with an insulating coating 81, and the other lead wire 83 is a twisted pair cable. It is connected to any position on the metal part of the monkey wrench 1. The tag information transmission unit 22c is also arranged in the groove 65 formed on the side surface of the monkey wrench 1 in the same manner as the tag information transmission unit 22a and the tag information transmission unit 22b.

In addition to the above, various parallel cables such as a strip path (also referred to as a strip line) and a ribbon cable can be used for the tag information transmission unit 22c.

Here, a groove 65 thicker than the core wire 41 is formed on the side surface of the monkey wrench 1 from the upper jaw 12 to the grip portion 13, and many parts of the tag information transmission portion 22 are wired in the groove 65. Explained as being done. However, the position of the groove 65 does not have to be on the side surface, and may be provided on any outer peripheral surface of the monkey wrench 1. Further, the tag information transmission unit 22 is entirely or a large part of the tag information transmission unit 22 is wired in a tunnel-shaped through hole formed inside a metal portion from the upper jaw 12 to the grip portion 13 of the monkey wrench 1. However, the whole or many parts thereof may be wired along the outer side surface from the upper jaw 12 to the grip portion 13 of the monkey wrench 1.

In many cases, the monkey wrench 1 is entirely made of metal. Metal tools are often manufactured by forging press forming, and it is easy to form a groove 65 on the side surface or the outer peripheral surface thereof. Therefore, the shape of the tag information transmission unit 22 is such that a groove 65 thicker than the core wire 41 is formed on the side surface of the monkey wrench 1 from the upper jaw 12 to the grip portion 13 and the tag information transmission unit 22 is arranged in the groove 65. A part or the whole can be easily manufactured as compared with the case where a part or the whole is passed through the inside of the metal portion from the upper jaw 12 to the grip portion 13 of the monkey wrench 1, and the upper jaw 12 to the grip portion 13 of the monkey wrench 1 can be manufactured. It is preferable because it does not interfere with the work of the user as compared with the case where it is arranged along the outer side surface of the wrench.

When a plurality of IC tag detection units 21 are provided in the monkey wrench 1, it goes without saying that the same number of tag information transmission units 22 as the IC tag detection units 21 are provided.

Next, the details of the reader / writer communication unit 23 will be described with reference to FIGS. 24 to 34.

The reader / writer communication unit 23a, which is a first example of the reader / writer communication unit 23, will be described with reference to FIGS. 24 to 27.

The reader / writer communication unit 23a is a slot antenna (sometimes referred to as a slit antenna), and has a length L1 of a half wavelength of the communication wavelength provided in the metal grip portion 13 of the monkey wrench 1. It is an elongated slit-shaped through hole. That is, it is preferable that the through hole is formed so that the inner peripheral length that goes around the inner circumference of the metal surface forming the slit is in a resonance state, and the inner peripheral length of the reader / writer communication unit 23a communicates. Since it is almost the same as the wavelength, it resonates half a wavelength. In the reader / writer communication unit 23a, the core wire 41 of the IC tag detection unit 21 and the tag information transmission unit 22 protrudes at a position separated by a distance L2 from any end of the slit, and the end of the core wire 41 is a slit. It is electrically connected to the connection point 101 of the metal portion inside by, for example, soldering. That is, one end of the core wire 41 is connected to the connection point 42, and the other end of the core wire 41 is connected to the connection point 101. When the reader / writer terminal 4 and the reader / writer communication unit 23a communicate with each other, the slit of the reader / writer communication unit 23a resonates by half a wavelength. At this time, the core wire 41 separated from the point M by a distance L2 and its connection point. Reference numeral 101 denotes a feeding portion of the slot antenna. Then, a high-frequency current is supplied to the tag information transmission unit 22, and a high-frequency current flows through the metal portion on the inner circumference of the slit.

The slit length L1 of the reader / writer communication unit 23a does not have to be exactly the same as the half wavelength of the communication wavelength, but may be the same length. That is, the inner peripheral length of the slit of the reader / writer communication unit 23a may not be exactly the same as the communication wavelength, but may be about the same length. The similar dimensions include some dimensional variations, but may be within a range in which the reader / writer communication unit 23a can sufficiently function as a slot antenna.

In the reader / writer communication unit 23a in the communication state, the voltage value of the standing wave due to the half-wave resonance is 0 at the points M and N in FIG. When the high-frequency current i is flowing in the direction shown in FIG. 26, the voltage value at the L point becomes the maximum (plus value) when the voltage value at the K point becomes the minimum (minus value). Then, when the direction of the high frequency current i is reversed, the voltage value at the K point becomes the maximum (plus value), and the voltage value at the L point becomes the minimum (minus value). As a result, a magnetic field φ is generated, and information can be exchanged with the reader / writer terminal 4.

The reader / writer communication unit 23a and the reader / writer terminal 4 can wirelessly communicate with each other using, for example, a radio wave having a frequency of 920 MHz in the UHF band. In this case, the slit length L1 of the reader / writer communication unit 23a is 16 cm. Further, the slit width is preferably about 1/10 of the communication wavelength, but is not limited to this depending on the strength required for the grip portion 13, and is a value sufficiently smaller than the slit length L1, for example, 5 mm to 1 cm. It is desirable that it is narrow enough. However, when the slit width is extremely narrow, the amount of magnetic field generated is reduced, which may deteriorate the communication accuracy. It is desirable to determine the slit width according to the design circumstances of the tool.

Further, as shown in the enlarged view of FIG. 25, the distance L2 between the core wire 41 serving as the power feeding portion and the slit end portion electromagnetically maximizes the detection sensitivity of the IC tag 3 by the reader / writer terminal 4. It is desirable to adjust and align as such. L2 may be, for example, about the same as the slit width.

Further, if dust or the like enters the slit portion of the reader / writer communication unit 23a, in the worst case, the high frequency current flowing through the inner circumference of the slit described with reference to FIG. 26 is short-circuited, which deteriorates the communication accuracy. There is a risk of doing so. In order to prevent such a short circuit, it is preferable to fill the filler 111 with a material that does not have electrical conductivity and transmits a magnetic field, such as resin.

When the opaque filler 111 is filled, the core wire 41 and the connection point 101 cannot be seen from the external space, but in order to explain the positions and the like, in each drawing, the core wire 41 and the connection point 101 are connected through the filler 111. Point 101 shall be illustrated and described.

Further, as described above, in the reader / writer communication unit 23a, since the absolute value of the voltage at the points K and L described with reference to FIG. 26 is the maximum, the corresponding portion of the grip portion 13 of the monkey wrench 1 is obtained. It is desirable to prevent the high-frequency current flowing through the inner circumference of the slit from being short-circuited by the operator's hand by grasping the above. Therefore, as shown in FIG. 27, it is preferable to provide the grip 112 made of a material that does not have electrical conductivity and transmits a magnetic field, such as resin, because the sensitivity of the slot antenna is high. is there. The grip 112 can also be configured to cover the entire slit. It is preferable to select a substance having a medium constant close to 1 as the material of the grip 112. This grip 112 prevents dust and the like from entering the slit portion of the reader / writer communication unit 23a, and prevents the communication accuracy from deteriorating due to a short circuit of the high frequency current flowing through the inner circumference of the slit. In addition to this, the grip portion 13 can be prevented from slipping, which leads to an improvement in the usability of the operator.

Further, depending on the size of the grip portion 13 of the monkey wrench 1 and the required strength, it may be difficult to provide a slit-shaped through hole having a length L1 of a half wavelength of the communication wavelength. A configuration example for such a case will be described below.

The reader / writer communication unit 23b, which is a second example of the reader / writer communication unit 23, will be described with reference to FIG. 28. Further, the reader / writer communication unit 23c, which is a third example of the reader / writer communication unit 23, will be described with reference to FIG. 29.

The reader / writer communication unit 23b shown in FIG. 28 and the reader / writer communication unit 23c shown in FIG. 29 are slot antennas similar to the reader / writer communication unit 23a, but grip the monkey wrench 1 made of metal. The through hole provided in the portion 13 is not a straight slit, but has a shape having irregularities on at least a part of the side surface of the through hole, and the inner circumference length that goes around the inner circumference of the metal surface forming the slit is determined. Since the length is about twice the length L1 of the half wavelength of the communication wavelength (in other words, the communication wavelength), it is possible to maintain the same half-wavelength resonance condition as that of the slot antenna.

The reader / writer communication unit 23b shown in FIG. 28 has a cross-shaped through hole provided in the grip portion 13. In this case, the communication sensitivity is inferior to that of the reader / writer communication unit 23a described with reference to FIG. 24, but the distance between the end point M and the end point N in the length direction of the grip portion 13 is set from the slit length L1. Can also be a short L3. In the reader / writer communication unit 23b, the core wire 41 of the IC tag detection unit 21 and the tag information transmission unit 22 protrudes from one of the ends (end in the longitudinal direction) by a distance L2, and the end of the core wire 41 The portion is electrically connected to the connection point 101 of the metal portion in the slit by, for example, soldering.

When the reader / writer terminal 4 and the reader / writer communication unit 23b communicate with each other, the core wire 41 serves as a power supply unit for the slot antenna, a high-frequency current is supplied to the tag information transmission unit 22, and a metal portion on the inner circumference of the slit is supplied. High frequency current flows. In the reader / writer communication unit 23b in the communication state, the voltage value is 0 at the points M and N in FIG. 28. When the high-frequency current i is flowing in the direction shown in FIG. 28, the voltage value at the L point becomes the maximum (plus value) when the voltage value at the K point becomes the minimum (minus value). Then, when the direction of the high frequency current i is reversed, the voltage value at the K point becomes the maximum (plus value), and the voltage value at the L point becomes the minimum (minus value).

The reader / writer communication unit 23b and the reader / writer terminal 4 can communicate wirelessly using, for example, a radio wave having a frequency of 920 MHz. In this case, the length that goes around the inner circumference of the cross-shaped slit of the reader / writer communication unit 23b is 32 cm, which is equal to the length that goes around the inner circumference of the slit of the reader / writer communication unit 23a.

The inner peripheral length of the slit of the reader / writer communication unit 23b may not be exactly the same as the communication wavelength, but may be about the same length. The similar dimensions include some dimensional variations, but may be within a range in which the reader / writer communication unit 23b can sufficiently function as a slot antenna.

Further, also in the reader / writer communication unit 23b, the inside of the slit is filled with a filler 111 such as resin, which does not have electrical conductivity and transmits a magnetic field, so that dust or the like does not enter the slit portion. It is suitable to fill. Further, it is preferable to provide a grip 112 similar to the case described with reference to FIG. 27 so that the operator does not short-circuit the high-frequency current by the operator's hand when the monkey wrench 1 is gripped by the operator. is there.

Further, depending on the size of the grip portion 13 of the monkey wrench 1 and the required strength, it may be required to have a slit length shorter than that of the reader / writer communication portion 23b described with reference to FIG. 28. ..

The reader / writer communication unit 23c shown in FIG. 29 has two recessed portions of the through holes provided in the grip portion 13 (in a K-shape). As a result, the communication sensitivity is further inferior to that of the reader / writer communication unit 23b described with reference to FIG. 28, but the distance between the end point M and the end point N in the length direction of the grip portion 13 is set to the slit length L3. It can be L4, which is even shorter than that. The reader / writer communication unit 23c shown in FIG. 29 is located at a position separated by a distance L2 from the end (end in the longitudinal direction) of either the M point or the N point, and is the IC tag detection unit 21 and the tag information transmission unit. The core wire 41 of 22 protrudes, and the end portion of the core wire 41 is electrically connected to the connection point 101 of the metal portion in the slit by, for example, soldering.

When the reader / writer terminal 4 and the reader / writer communication unit 23 communicate with each other, the core wire 41 and its connection point 101, which are separated from the M point by a distance L2, serve as a feeding unit for the slot antenna, and a high-frequency current is applied to the tag information transmission unit 22. Is supplied, and a high-frequency current flows through the metal part on the inner circumference of the slit. In the reader / writer communication unit 23c in the communication state, the voltage value is 0 at the points M and N in FIG. 29. When the high-frequency current i is flowing in the direction shown in FIG. 29, the voltage value at the L point becomes the maximum (plus value) when the voltage value at the K point becomes the minimum (minus value). Then, when the direction of the high frequency current i is reversed, the voltage value at the K point becomes the maximum (plus value), and the voltage value at the L point becomes the minimum (minus value).

The reader / writer communication unit 23c and the reader / writer terminal 4 can communicate wirelessly using, for example, a radio wave having a frequency of 920 MHz. Also in this case, the length that goes around the inner circumference of the slit of the reader / writer communication unit 23c is 32 cm.

The inner peripheral length of the slit of the reader / writer communication unit 23c does not have to be exactly the same as the communication wavelength, but may be about the same length. The similar dimensions include some dimensional variations, but may be within a range in which the reader / writer communication unit 23c can sufficiently function as a slot antenna.

Further, also in the reader / writer communication unit 23c, the inside of the slit is filled with a filler 111 such as resin, which does not have electrical conductivity and transmits a magnetic field, so that dust or the like does not enter the slit portion. It is suitable to fill. Further, it is preferable to provide a grip 112 similar to the case described with reference to FIG. 27 so that the operator does not short-circuit the high-frequency current by the operator's hand when the monkey wrench 1 is gripped by the operator. is there.

Further, depending on the size of the grip portion 13 of the monkey wrench 1 and the required strength, it may be required to have a slit length shorter than that of the reader / writer communication portions 23a to 23c described above.

Next, the reader / writer communication unit 23d, which is a fourth example of the reader / writer communication unit 23, will be described with reference to FIG.

The reader / writer communication unit 23d shown in FIG. 30 has two recessed portions of the through holes provided in the grip portion 13, similarly to the reader / writer communication unit 23c described with reference to FIG. 29. At the same time, by filling the inside of the slit with a filler 115, which is an insulator having a medium constant higher than that of vacuum or air, the distance between the end point M and the end point N in the length direction of the grip portion 13 can be increased. , L5 is shorter than the slit length L4 of the reader / writer communication unit 23c described with reference to FIG. 29. Also in the reader / writer communication unit 23d shown in FIG. 30, the core wire 41 of the IC tag detection unit 21 and the tag information transmission unit 22 is located at a position separated by a distance L2 from any end (end in the longitudinal direction). The protruding end of the core wire 41 is electrically connected to the connection point 101 of the metal portion in the slit, for example, by soldering.

Even in the reader / writer communication unit 23d in the communication state, the voltage value is 0 at the points M and N in FIG. When the high-frequency current i is flowing in the direction shown in FIG. 30, the voltage value at the L point becomes the maximum (plus value) when the voltage value at the K point becomes the minimum (minus value). Then, when the direction of the high frequency current i is reversed, the voltage value at the K point becomes the maximum (plus value), and the voltage value at the L point becomes the minimum (minus value).

The medium constant is represented by the product of the relative permittivity and the relative magnetic permeability. Since the relative permittivity ε in vacuum is 1.0 and the relative permeability μ is 1.0, the medium constant in vacuum is 1.0. The medium constant in air is also approximately 1.0. The medium constant of the filler 115 is determined by how many times the relative permittivity and the relative magnetic permeability of the material are with respect to vacuum. That is, when the relative permittivity of the material of the filler 115 is n times the vacuum and the relative magnetic permeability is m times the vacuum, the medium constant of the filler 115 is represented by mnεμ. Therefore, the value represented by the following mathematical formula (3) is integrated into the wavelength when the inside of the slit is filled with the filler 115.

Formula (3)

The material of the filler 115 is preferably a substance that does not lower the antenna sensitivity due to resistance loss or the like. For example, in addition to urethane material and fluororesin containing a large amount of air, chloride resin and polymer resin can be used. .. In these resins, n is 2 to 5 and m is approximately 1, for example, when a substance having m × n of 4 is used as the filler 115, the length of one round of the inner circumference of the slit is determined by the reader /. Half of the writer communication units 23a to 23c may be used. For example, when the reader / writer communication unit 23d and the reader / writer terminal 4 communicate using radio waves having a frequency of 920 MHz in the UHF band, the length of the inner circumference of the slit of the reader / writer communication unit 23d is 16 cm. It becomes.

For a slit having the same shape as the reader / writer communication unit 23a or the reader / writer communication unit 23b, the slit length in the length direction of the grip portion 13 is shortened by filling the inside of the slit with the filler 115. Needless to say, you can do it. When the inside of the slit is filled with a filler 115 of a substance having m × n of 4 for a slit having the same shape as the reader / writer communication unit 23a, the slot length is 8 cm, and the reader / writer communication unit 23b When the inside of the slit is filled with a filler 115 made of a substance having m × n of 4, the length of the slit that goes around the inner circumference of the slit is 16 cm.

Further, also in the reader / writer communication unit 23d, the case where the high frequency current is not short-circuited by the operator's hand when the monkey wrench 1 is gripped by the operator is described with reference to FIG. 27. It is preferable to provide a similar grip 112.

In the reader / writer communication units 23a to 23d described above, the core wire 41 is projected from one end of the slit, and the connection portion 101 is used to short-circuit the metal portion on the wall surface of the slit to form one power supply unit. , It has been described as communicating with the reader / writer terminal 4. However, the reader / writer communication units 23a to 23d can form power feeding units at both ends (M point side and N point side) of the slit. With such a configuration, it is possible to configure two power feeding units with one slit, and it is possible to collectively connect the two IC tag detection units 21 to one reader / writer communication unit 23. is there.

Next, with reference to FIGS. 31 to 33, the reader / writer communication unit 23e, which is a fifth example of the reader / writer communication unit 23, and the reader / writer communication unit 23, which is a sixth example of the reader / writer communication unit 23. The writer communication unit 23f will be described.

A string (strap) may be attached to a part of a tool such as a monkey wrench 1 in order to prevent the tool from falling or to suspend and store the tool. Therefore, as shown in FIG. 31, a string 121 is provided in advance on the monkey wrench 1, the tag information transmission unit 22 is extended to the inside of the string 121, and the reader / writer communication unit 23e and the reader / writer communication unit 23f are extended. Is provided in the string 121. The string 121 is made of a material that does not have electrical conductivity and is capable of transmitting a magnetic field.

The reader / writer communication unit 23e will be described with reference to FIG. 32. The reader / writer communication unit 23e is a dipole antenna, and is from the tip portion of the tag information transmission unit 22 in the string 121, for example, the core wire 41 and the outer conductor 82 in FIG. 22 or the core wire 41 and the conductor wire 83 in FIG. 23. , Each of which is a continuous linear or elongated plate-shaped conductor whose length is λ / 4 of the communication wavelength and is extended in both directions.

The reader / writer communication unit 23f will be described with reference to FIG. 33. The reader / writer communication unit 23f is a monopole antenna, and only the core wire 41 at the tip of the tag information transmission unit 22 in the string 121 is linear or elongated plate-shaped, and the length thereof is λ of the communication wavelength. It is a conductor that becomes 4/4 extended in one direction.

In this way, when the reader / writer communication unit 23 wirelessly communicates with the reader / writer terminal 4, the monkey wrench 1 can be used independently for the reader / writer terminal 4, thus improving workability. It becomes possible to make it.

Needless to say, the reader / writer communication unit 23 may perform wired communication. The reader / writer communication unit 23g, which is a seventh example of the reader / writer communication unit 23, will be described with reference to FIG. 34. As shown in FIG. 34, the end of the tag information transmission unit 22 and the end of the reader / writer communication unit 23g composed of a cable such as a coaxial cable or a twisted pair cable are electrically connected, and the reader / writer terminal 4 Information may be exchanged by connecting to a predetermined port of. When communicating with the reader / writer terminal 4 by wire using the reader / writer communication unit 23g, it is possible to perform stable communication as compared with the case of wireless communication.

When a plurality of IC tag detection units 21 and tag information transmission units 22 are provided in the monkey wrench 1, it goes without saying that the same number of reader / writer communication units 23 as those of the IC tag detection units 21 are provided. When the monkey wrench 1 is provided with a plurality of IC tag detection units 21 and tag information transmission units 22, power supply units are supplied to both ends (M point side and N point side) of slits of at least one reader / writer communication unit 23. It is preferable that the two IC tag detection units 21 are aggregated and connected to one reader / writer communication unit 23 by forming the above.

By using the monkey wrench 1 having such a configuration, the monkey wrench 1 and the reader / writer terminal can be inserted between the operation of detecting the IC tag 3 and the operation of attaching or removing the bolt 2 by the monkey wrench 1. Since it is not necessary to change the position with 4, it is possible to manage the bolt 2 attached or detached by the monkey wrench 1 without complicating the work.

In the above description, the upper jaw 12 of the monkey wrench 1 has been described as being made of metal. However, for example, the other part may be made of metal. In that case, the IC tag is attached to the part made of metal. The detection unit 21 shall be provided. Further, in the above description, the grip portion 13 of the monkey wrench 1 has been described as being made of metal, but for example, the other portion may be made of metal, and in that case, the portion made of metal is used. A reader / writer communication unit 23 shall be provided.

Further, in the above, the monkey wrench has been described as an example as corresponding to the tool, but the present invention includes, for example, a box wrench, a torque wrench, a screwdriver, a box driver, pliers, a nipper, and a wire in addition to the monkey wrench. It can be applied to strippers and other tools that have metal at least in part.

For example, the wire stripper that removes the tip portion of the coating of the wire harness may be used differently depending on the thickness of the target wire harness and the material of the coating. In such a case, an IC tag 3 in which information indicating the length of the wire harness and the material of the coating is recorded is attached to a reel or the like on which the wire harness is sprinkled, and the IC tag detection unit 21 described above is attached to the wire stripper. , The tag information transmission unit 22 and the reader / writer communication unit 23 are provided. Then, before starting work, if the information recorded on the IC tag 3 can be read and it can be determined whether or not the wire stripper is compatible with the type of wire stripper to be used, the thickness of the wire harness and the material of the coating can be used. It is possible to prevent the coating from being removed by a wire stripper that does not match, and the coating cannot be completely removed and remains, or the core wire portion is scraped.

Further, for a tool such as a box wrench that has a through hole surrounded by a metal portion in advance due to the structure of the tool, a notch is further added to the inside of the through hole. It may form the internal space S1. Therefore, as another tool including the IC tag detection unit 21, the box wrench 125 of FIG. 35 will be described. The box wrench 125 corresponds to a tool. FIG. 35 is an enlarged perspective view of the IC tag detection unit 21f when the spectacle wrench 125 is turned inside out (the back surface is the upper surface when the spectacle wrench 125 is used by a right-handed worker). ..

The box wrench 125 has a through hole having a shape close to a cylinder as a portion for gripping a bolt or the like, and a finer notched portion is formed as an internal space S1 so as to be connected to the through hole. That is, the box wrench 125 is formed with a through hole shaped like a keyhole as a whole. Then, the IC tag detection unit 21f is formed using the internal space S1. The notch constituting the internal space S1 is sufficiently small so as not to impair the strength of the spectacle wrench 125. Similar to the IC tag detection units 21a to 21e described above, the core wire 41 of the tag information transmission unit 22 projects into the internal space S1 of the IC tag detection unit 21f, and the connection point 42 allows the metal portion inside the notch to be formed, for example. , It is electrically connected by soldering. The internal space S1 is filled with a filler 43 that does not have electrical conductivity and transmits a magnetic field, such as a resin. When the filler 43 has a color different from that of the metal part around it, it is easy for the worker to confirm the position of the IC tag detection unit 21f while the right-handed worker is working with the spectacle wrench 125. .. Therefore, the IC tag detection unit 21f can be easily brought close to the IC tag 3.

Also in the IC tag detecting section 21f, similarly to the IC tag detecting section 21 a to 21 e, the core wire 41, a large current _{i 1} seen in a short-circuit condition occurs. Thus, the magnetic field φ generated by the high frequency current i ₁ flowing through the core 41, filler 43 in the interior space S1, which is surrounded by the metal part passes through the portion filled, spreading to the external space, at least one of which The portion penetrates the coil antenna 33. As a result, the current i ₂ flows through the coil antenna 33, the induced voltage required for the IC chip 32 to operate is generated, and the IC chip 32 operates. Therefore, the IC tag detection unit 21f can detect the IC tag 3 and exchange information.

Further, in the IC tag detection unit 21f, when the portion that grips the bolt or the like is made of metal, there is a metal portion that makes one round like a loop following the internal space S1. The communication sensitivity of the IC tag detection unit 21f is promoted by the current flowing through the metal loop following the internal space S1. When the loop length of this metal loop is one wavelength of the wavelength used for communication with the IC tag 3, the sensitivity of the IC tag detection unit 21f is maximized, but even if the loop length is different from this, the sensitivity is maximized. , The communication sensitivity of the IC tag detection unit 21f is promoted.

Further, in the internal space S1, the portion where the core wire 41 is exposed becomes the place where the magnetic field is generated, and when the distance of the internal space S1 from the core wire 41 to the connection point 42 is shortened, the generation of the magnetic field is reduced. However, if the distance of the internal space S1 from the core wire 41 to the connection point 42 is long, the magnetic field that goes out from the internal space S1 to the external space increases, the detection sensitivity increases, and the mechanical strength decreases. Therefore, the position where the core wire 41 protrudes into the internal space S1 (the point opposite to the connection point 42 in the internal space S1) and the position of the connection point 42 provide a constant detection sensitivity while maintaining a predetermined strength of the tool. It is preferable to maintain a predetermined distance (length) that can be secured (the core wire 41 has a length equal to or longer than a predetermined length in the internal space S1) and to be close to the detection surface of the IC tag 3.

Further, when the filler 43 of the IC tag detection unit 21f is opaque, the core wire 41 and the connection point 42 cannot be confirmed by the operator, and even if a transparent material is used for the filler 43, the core wire 41 and the connection point 42 cannot be confirmed. The core wire 41 and the connection point 42 are very small with respect to the volume of the notched portion forming the internal space S1 that can be easily confirmed by the operator. Therefore, when the IC tag detection unit 21f is brought close to the IC tag 3, it is considered that the operator tries to align the center of the internal space S1 of the IC tag detection unit 21f with the center of the IC tag 3. Here, when the position of the core wire 41 is located directly above the IC chip 32 of the IC tag 3, as described above, the current generated in the coil antenna 33 due to the magnetic field φ cancels out on both sides of the IC chip 32. The IC tag detection unit 21f cannot detect the IC tag 3 because it matches. In order to prevent this, it is preferable that at least a part of the core wire 41 is arranged at a position offset from the center of the internal space 1 of the IC tag detection unit 21f.

Further, some tools, such as a socket wrench, can be partially removed from the grip portion 13 and replaced. If the IC tag detection unit 21 is provided in the replaced portion, the detection of the IC tag 3 and the work of attaching or detaching bolts or screws may be smoothly performed in terms of work.

As an example of applying the present invention, a socket wrench 131 with a hexagonal hole is shown in FIG. 36, and a socket wrench 132 is shown in FIG. 37, respectively. Socket wrenches 131 and 132 correspond to tools.

The socket wrench 131 of FIG. 36 has a structure in which a part of the tip portion 141 is fitted inside the grip portion 142 and is detachable so that the tip portion 141 can be removed from the grip portion 142. .. One of the IC tag detection units 21 (IC tag detection unit 21a in FIG. 36) is provided at the end of the tip portion 141 of the socket wrench 131. The grip portion 142 is provided with a reader / writer communication unit 23 (reader / writer communication unit 23a in FIG. 36). The tag information transmission unit 22 (tag information transmission unit 22b in FIG. 36) is provided over the tip portion 141 and the grip portion 142 so that a part thereof can be separated.

Further, also in the socket wrench 132 of FIG. 37, a part of the tip portion 141 is fitted inside the grip portion 142 so that the tip portion 141 can be removed from the grip portion 142, so that the socket wrench 132 can be attached and detached. Have. In the socket wrench 132, the bolt 2 in the tip portion 141 is inserted so that the IC tag 3 provided in the center of the head of the bolt 2 can be detected with the bolt 2 inserted in the socket wrench 132. An IC tag detection unit 21e is provided at a corresponding position of the hole.

FIG. 38 is an enlarged view of a connecting portion between the tip portion 141 and the grip portion 142. With reference to FIG. 38, the structure of the tag information transmission unit 22 of the connection portion between the tip portion 141 and the grip portion 142 will be described.

The tag information transmission unit 22b on the tip portion 141 side is referred to as a tag information transmission unit 22b-1, and the tag information transmission unit 22b on the grip portion 142 side is referred to as a tag information transmission unit 22b-2. The tag information transmission unit 22b-1 is embedded inside the tip portion 141, and the outer conductor 82 is electrically connected to the metal portion of the tip portion 141. Further, the end portion of the tag information transmission portion 22b-1 corresponding to the connection portion with the grip portion 142 on the tip portion 141 side is a sufficiently small cavity in which the insulating coating 81 is removed and only the core wire 41 is exposed. .. Further, the tag information transmission unit 22b-2 is embedded in the grip portion 142, and the outer conductor 82 is electrically connected to the metal portion of the grip portion 142. Further, in the cavity corresponding to the connection portion with the tip portion 141 on the grip portion 142 side, the insulating coating 81 is removed from the tag information transmission portion 22b-2 end portion, and only the core wire 41 is exposed. .. The exposed position of the core wire 41 of the tag information transmission unit 22b-2 is a sufficiently small cavity in which only the core wire 41 at the end of the tag information transmission unit 22b-1 is exposed when the tip portion 141 and the grip portion 142 are connected. It is designed to be inserted inside.

That is, when the tip portion 141 and the grip portion 142 are connected, the core wire 41 at the end of the tag information transmission unit 22b-1 and the core wire 41 at the end of the tag information transmission unit 22b-2 are in contact with each other or electrostatically charged. Close to the inductively coupled distance. Therefore, the IC tag detection unit 21 and the reader / writer communication unit 23 are in a state of being electrically and electromagnetically connected by the tag information transmission unit 22b.

In the state where the tip portion 141 and the grip portion 142 are connected, the core wire 41 at the end of the tag information transmission unit 22b-1 and the core wire 41 at the end of the tag information transmission unit 22b-2 are always electrostatically coupled. The insulation coating 81 may not be removed if the distance is possible.

Here, the socket wrench 131 that can be divided into two, the tip portion 141 and the grip portion 142, has been described as an example, but the above-mentioned technique can also be applied to a tool that can be divided into two or more. Needless to say, there is.

When the monkey wrench 1, the box wrench 125, the socket wrench 131, or the socket wrench 132 described above is used, the monkey wrench 1, the box wrench 125, the socket wrench 131, or the socket wrench 132 is used when reading the IC tag 3. , There is no need to switch tools to the reader / writer terminal 4. Therefore, the IC tag can be read by using a tool for the operator to hold and work without significantly increasing the time required for the work, so that the bolt 2 and the like can be properly managed and the device can be used. It is possible to prevent human error when mounting or removing the device in the correct position. Further, when a monkey wrench 1, a box wrench 125, a socket wrench 131, or a socket wrench 132 is used, there is no power supply or electronic circuit inside these, as in the reader / writer terminal 4. There is no cause of failure due to these, and it is possible to handle the same as a conventional tool.

In addition to monkey wrenches, box wrenches, and socket wrenches, the techniques described above can be applied to, for example, torque wrenches, screwdrivers, box drivers, pliers, nippers, wire strippers, and other tools that have at least a portion of metal. it can. This makes it possible to properly manage the process of mounting or removing screws, bolts, etc. at the correct position of the device by using an appropriate tool among a wide variety of tools.

Further, the embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

1 ... Monkey wrench (corresponding to tools), 2 ... Bolt, 3, 3a, 3b ... IC tag, 4 ... Reader / writer terminal, 12 ... Upper jaw (corresponding to metal), 13 ... Gripping part (corresponding to metal) , 21, 21a to f ... IC tag detection unit, 22, 22a to c ... tag information transmission unit, 23, 23a to g ... reader / writer communication unit, 32 ... IC chip, 33 ... coil antenna, 35 ... antenna , 41 ... Core wire, 42 ... Connection point, 43 ... Filler, 61 ... Mark, 65 ... Groove, 70 ... Insulation, 81 ... Insulation coating (corresponding to insulation), 101 ... Connection point, 111 ... Filler, 112 ... Grip, 115 ... Filling material, 121 ... String (corresponding to string-shaped part), 125 Adjustable wrench (corresponding to tool) 131, 132 ... Socket wrench (corresponding to tool)

Claims (22)

In tools that are at least partially made of metal and are used by the operator to grip
IC tag detector that detects IC tags and
A reader / writer communication unit that communicates with a reader / writer terminal,
A tag information transmission unit for connecting the IC tag detection unit and the reader / writer communication unit is provided.
The tag information transmission unit includes a core wire for transmitting information read from the IC tag or written to the IC tag.
The IC tag detection unit includes an internal space formed by cutting out a part of the metal.
A part of the core wire is exposed in the internal space, and the exposed portion of the core wire in the internal space is formed in a straight line, or a portion overlapping the exposed portions when the internal space is viewed in a plan view. The exposed portion is formed in a curved shape in a state where
A tool characterized in that the end portion of the core wire is electrically connected to the metal constituting the internal space. In the tool according to claim 1,
A tool characterized in that at least a part of the core wire of the IC tag detection unit is exposed at a position offset from the central portion of the internal space. In the tool according to claim 1 or 2.
A tool characterized in that the internal space of the IC tag detection unit is formed by cutting out an end portion of the tool so as to penetrate the upper surface and the lower surface including the side surface. In the tool according to claim 1 or 2.
The internal space of the IC tag detection unit is an end portion of the tool, and the detection surface of the IC tag is cut out in a shape that includes a corner portion between the lower surface and the side surface of the tool and does not penetrate. A tool characterized by being composed of. In the tool according to claim 1 or 2.
The internal space of the IC tag detection unit is an end portion of the tool, and has a shape that includes a corner portion between the lower surface and the side surface of the tool and does not penetrate the detection surface of the IC tag. A tool characterized in that it is constructed by cutting out in a direction diagonal to the extending direction of the ridgeline of. In the tool according to claim 1 or 2.
A tool characterized in that the internal space of the IC tag detection unit is formed by cutting out from the detection surface of the IC tag so as to penetrate to a surface opposite to the detection surface. In the tool according to claim 1 or 2.
A tool characterized in that the internal space of the IC tag detection unit is formed by hollowing out a part of the detection surface of the IC tag. In tool according to any one of claims 4, 5 or 7,
A tool that is on a surface opposite to the detection surface of the IC tag, corresponds to the internal space of the IC tag detection unit, and further includes a mark provided at a position different from the core wire. .. In tool according to any one of claims 1 to 8,
The tag information transmission unit is arranged in a groove provided on the outer peripheral surface of the tool.
A tool characterized in that the core wire is insulated from a metal portion of the tool by an insulating material. In tool according to any one of claims 1-9,
The tool can be divided into two or more
A tool characterized in that the tag information transmission unit is divided into two or more at the same time as the tool is divided, and electrostatically inducedly coupled at the connection point thereof. In tool according to any one of claims 1 to 10,
The reader / writer communication unit is a slit antenna composed of a slit formed in a part of a metal portion of the tool and a part of the core wire exposed at the end of the slit.
A tool characterized in that the core wire exposed in the slit is electrically connected to the metal portion in the slit. The tool according to claim 11.
A tool characterized in that the length of the reader / writer communication unit that goes around the inner circumference of the slit is about the same as the communication wavelength with the reader / writer terminal. The tool according to claim 11.
A tool characterized in that the slit of the reader / writer communication unit is filled with a filler having a medium constant greater than 1. The tool according to any one of claims 11 to 13.
A tool characterized in that it covers at least the central portion of the slit of the reader / writer communication unit, and further includes a grip made of a material that does not have electrical conductivity and transmits a magnetic field. In tool according to any one of claims 1 to 10,
It also has a string-like part made of a material that does not have electrical conductivity and transmits a magnetic field.
The reader / writer communication unit is a tool provided inside the string-shaped portion and is a dipole antenna connected to the core wire. In tool according to any one of claims 1 to 10,
It also has a string-like part made of a material that does not have electrical conductivity and transmits a magnetic field.
The reader / writer communication unit is a tool provided inside the string-shaped portion and is a monopole antenna connected to the core wire. In tools that are at least partially made of metal and are used by the operator to grip
IC tag detector that detects IC tags and
A reader / writer communication unit that communicates with a reader / writer terminal,
A tag information transmission unit for connecting the IC tag detection unit and the reader / writer communication unit is provided.
The tag information transmission unit includes a core wire for transmitting information read from the IC tag or written to the IC tag.
The reader / writer communication unit is a slit antenna composed of a slit formed in a part of a metal portion of the tool and a part of the core wire exposed at the end of the slit.
A tool characterized in that the core wire exposed in the slit is electrically connected to the metal portion in the slit. The tool according to claim 17.
A tool characterized in that the length of the reader / writer communication unit that goes around the inner circumference of the slit is about the same as the communication wavelength with the reader / writer terminal. The tool according to claim 17.
A tool characterized in that the slit of the reader / writer communication unit is filled with a filler having a medium constant of more than 1. The tool according to any one of claims 17 to 19.
A tool characterized in that it covers at least the central portion of the slit of the reader / writer communication unit, and further includes a grip made of a material that does not have electrical conductivity and transmits a magnetic field. In tools that are at least partially made of metal and are used by the operator to grip
IC tag detector that detects IC tags and
A reader / writer communication unit that communicates with a reader / writer terminal,
A tag information transmission unit that connects the IC tag detection unit and the reader / writer communication unit,
It has a string-like part made of a material that does not have electrical conductivity and transmits a magnetic field.
The reader / writer communication unit is provided inside the string-shaped portion.
The reader / writer communication unit includes a part of a core wire for transmitting information read from the IC tag or written in the IC tag, and a part of the core wire is included in the tag information transmission unit. It is continuous with the other parts of the core wire
Further, the reader / writer communication unit includes a conductor that is continuous with a part of the core wire and extends to the side opposite to the part of the core wire, and the conductor constitutes a dipole antenna together with the part of the core wire. A tool characterized by that. In tools that are at least partially made of metal and are used by the operator to grip
IC tag detector that detects IC tags and
A reader / writer communication unit that communicates with a reader / writer terminal,
A tag information transmission unit that connects the IC tag detection unit and the reader / writer communication unit,
It has a string-like part made of a material that does not have electrical conductivity and transmits a magnetic field.
The reader / writer communication unit is provided inside the string-shaped portion.
The reader / writer communication unit includes a part of a core wire for transmitting information read from the IC tag or written in the IC tag, and a part of the core wire is included in the tag information transmission unit. It is continuous with the other parts of the core wire
A tool characterized in that a part of the core wire constitutes a monopole antenna.

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