JP5950982B2 - Torque wrench and automatic recognition system - Google Patents

Description

  The present invention relates to a torque wrench and an automatic recognition system.

  In recent years, high traceability of work records, inspection records, and the like has been demanded. Therefore, for example, an IC tag is embedded in a bolt, and the torque value at the time of fastening is recorded in the IC tag, and data such as a torque value is quickly taken out and verified even when a tightening failure occurs. The technique which can be performed is known (refer patent document 1).

  Also, when identification information read from a bolt with an IC tag or a torque wrench incorporating an IC tag is transmitted to the work data management server at the field terminal, the work data management server presents a work procedure based on the transmission information. In addition, a technique that can perform work support, support for creating work report documents, and the like is known (see Patent Document 2).

JP 2006-185314 A Japanese Patent No. 5065851

  Incidentally, the torque wrench disclosed in Patent Document 1 is a device in which a strain gauge of a strain sensor is incorporated in the head portion of the torque wrench, and the strain gauge and the torque wrench are connected by a signal cable to access an IC tag. The reader / writer device (IC tag reading device 9 in Patent Document 1) is configured separately from the torque wrench body. For this reason, it is necessary for the operator to carry out the fastening operation using the torque wrench and the reading operation using the reader / writer by switching to each device. For this reason, there is a risk of causing human errors such as a visual error due to visual movement when an operator changes the device and an operation error by each device.

  Further, in the tightening tool disclosed in Patent Document 2, since the antenna is arranged outside the head of the tightening tool, not only the bolt or gasket RFIC tag directly under the head but also other RFIC tags (Patent Document) If the RFIC tags 101A, 101B, 101C) in FIG.

  The present invention has been made on the basis of any of the above circumstances, and its object is to reduce a human error and detect a target IC tag more reliably and an automatic recognition system. Is to provide.

  In order to solve the above problems, a first aspect of the present invention is a torque wrench capable of rotating a fastening member, and when rotating a fastening member, a socket for fastening the fastening member is provided. And an IC tag detection unit for detecting an IC tag incorporated in the fastening member.

  Another aspect of the present invention is a torque wrench capable of attaching a socket according to the type of fastening member in the above-described invention, and is a square drive that is inserted into a socket hole of the socket and rotates the socket. The IC tag detection unit is preferably attached to the corner drive unit.

  In addition, according to another aspect of the present invention, in the above-described invention, the IC tag detection unit includes an antenna for detecting the IC tag, and the antenna is configured to be positioned on the rotation axis of the angular drive unit. Preferably it is.

  Further, according to another aspect of the present invention, in the above-described invention, a protrusion is provided on the outer surface of the corner drive part, and the protrusion is inserted into the socket hole of the socket. Is a part for attaching the socket by fitting, and the IC tag is provided on the socket, and when the socket is fixed to the square drive part by the protrusion, the antenna included in the IC tag detection part And the IC tag provided in the socket are in a positional relationship that does not cause a mutual induction electromagnetic coupling relationship, or the sensitivity is such that information cannot be read from the socket IC tag even if the electromagnetic coupling relationship occurs. When the socket and the fastening member are fitted together in this state, the electromagnetic coupling relation by mutual induction between the antenna of the IC tag detection unit and the IC tag provided on the fastening member is obtained. Is generated, and is configured to be able to read information from only the IC tag of the clamping member, it is preferable.

  Further, according to another aspect of the present invention, in the above-described invention, the corner drive portion has an insertion hole for allowing a cable for electrically connecting the IC tag detection portion to pass through the corner drive portion. In the insertion hole, the end of the insertion hole where the IC tag detection unit is attached is provided with a recess into which the IC tag detection unit is inserted, and the IC tag detection unit is connected via a spring. It is preferable that the urging force of the direction which protrudes from a recessed part is given by attaching to a corner drive part.

  Further, according to another aspect of the present invention, in the above-described invention, a reader / writer unit that is connected to the IC tag detection unit and acquires each identification information of the socket and the fastening member, and a socket and the fastening member that are obtained by the reader / writer unit. It is preferable to include a communication unit that transmits each piece of identification information to the information management server, and a display unit that displays information transmitted from the information management server.

  Another aspect of the present invention relates to an automatic recognition system. That is, the automatic recognition system of the present invention receives a socket and bolt identification information transmitted from the torque wrench communication unit, and performs a predetermined work determination based on the identification information received by the reception unit. An information management server having a work determination unit to perform and a transmission unit that transmits determination result information of the work determination unit to the communication unit of the torque wrench, and the determination result transmitted from the information management server is a display unit It is characterized by being displayed.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing a human error, the torque wrench and automatic recognition system which can detect the target IC tag more reliably can be provided.

FIG. 1 is a block diagram showing a configuration of an automatic recognition system 1A according to an embodiment of the present invention. FIG. 2 is a perspective view showing an example of the appearance of the torque wrench 2 shown in FIG. FIG. 3 is a cross-sectional view showing details of the configuration of the torque wrench 2. FIG. 4 is a diagram showing an IC tag bolt 51 as an example of the IC tag bolt 4 shown in FIG. FIG. 5 is a diagram showing an IC tag bolt 52 as an example of the IC tag bolt 4 shown in FIG. 6 shows the detection antenna 81 of the IC tag detection unit 17A, the coil surface C1 of the antenna coil 82 included in the IC tag 3A of the socket 3, and the coil surface C2 of the antenna coil 83 of the IC tag 4A of the bolt 4 with IC tag. It is a figure for demonstrating mutual mutual induction relationship. FIG. 7 is a diagram for explaining the detection sensitivity according to the relationship between the antenna coil surface of the IC tag detection unit 17A and the antenna coil surface inside each IC tag. FIG. 8 is a block diagram showing a configuration of an automatic recognition system 1B according to another embodiment of the present invention. FIG. 9 is a perspective view showing an example of the appearance of the torque wrench 2B shown in FIG. FIG. 10 is a diagram for explaining a preferable positional relationship of the IC tag 3A in the socket 30A shown in FIGS. FIG. 11 is a diagram for explaining a preferred position of the IC tag 3A in a socket 30B of a type different from the socket 30A. FIG. 12 is a diagram for explaining the relationship of electromagnetic mutual induction according to the state of operation of the socket 3 and the torque wrench 2 of FIGS. 10 and 11. FIG. 13 is a diagram showing a concept of detecting a plurality of different sockets 91, 92, 93, 94 collectively. FIG. 14 is a diagram for explaining radiated radio waves that collectively detect the plurality of sockets 91, 92, 93, 94 shown in FIG. FIG. 15 is a block diagram showing a configuration of an automatic recognition system 1C showing another embodiment.

  Hereinafter, an automatic recognition system 1A and a torque wrench 2 according to an embodiment of the present invention will be described with reference to the drawings. However, the automatic recognition system and torque wrench of the present invention are not limited to the following embodiments.

<About the configuration of the automatic recognition system 1A>
FIG. 1 is a block diagram showing a configuration of an automatic recognition system 1A according to an embodiment of the present invention. FIG. 2 is a perspective view showing an example of the appearance of the torque wrench 2 shown in FIG.

  The automatic recognition system 1 </ b> A includes at least a torque wrench 2 and an information management server 6 that can transmit and receive information between the torque wrench 2 and the network 5. In addition to these, the socket 3 and the bolt 4 with the IC tag may be used as the configuration requirements of the automatic recognition system 1A. The socket 3 incorporates an IC tag 3A in which identification information for uniquely identifying the socket 3 is recorded, and the head of the bolt 4 with IC tag uniquely identifies the bolt 4 with IC tag. An IC tag 4A on which information is recorded is incorporated.

  The torque wrench 2 has a reader / writer function for reading and writing information to the IC tags 3 </ b> A and 4 </ b> A, and a communication function for transmitting / receiving information to / from the information management server 6. Details of the configuration of the torque wrench 2 will be described later.

  The socket 3 is used when the tightening force of the torque wrench 2 is transmitted to the IC tag bolt 4 when the IC tag bolt 4 is fixed to the object to be tightened. The position of the IC tag 3A incorporated in the socket 3 will be described later.

  Various types of sockets 3 can be used. For example, the planar shape of the socket hole 31 (also referred to as an insertion angle) provided so as to penetrate the socket 3 includes various types such as a square type of a square and a hexagon type of a hexagon. The planar shape of the aperture portion 32 into which the bolt is inserted also includes various types such as a hexagonal type and a 12-cornered type. Furthermore, there are various types depending on the length of the socket 3.

  As shown in FIG. 2, the IC tag bolt 4A has an IC tag 4A embedded in the head. The identification information of the bolt itself is recorded on the IC tag 4A, and the identification information can be written or read by the torque wrench 2. Further, the bolt 4 with the IC tag is fixed to an object to be fastened (not shown) having a metal surface in a state of being fitted to the socket 3. In FIG. 1, only one socket 3 is shown, but there are a plurality of socket holes 31, a size of the caliber portion 32, a shape of the caliber portion 32, and the like that are different from each other. And according to the size, shape, etc. of the bolt 4 with IC tag, the operator can replace | exchange the socket 3 suitably. Moreover, although the IC tag bolt 4 in FIG. 1 is a hexagonal bolt, the bolt may have a shape other than this.

  The information management server 6 compares the information supplied from the first communication unit 18 or the second communication unit 20 (described later) of the torque wrench 2 with the identification information of the torque wrench 2, the socket 3, and the IC tag bolt 4. To do. Then, the information management server 6 determines whether or not the torque wrench 2 is correct when performing a predetermined operation, whether or not it is the bolt 4 with IC tag that is the work target, and the torque wrench 2 and the socket 3 are correctly combined. The information indicating these determination results is transmitted to the second communication unit 20 of the torque wrench 2.

  In the automatic recognition system 1A having the above configuration, the torque wrench 2 identifies the IC tag bolt 4 and the socket 3 and makes an inquiry to the information management server 6 so that the socket 3 corresponding to the type of the IC tag bolt 4 is obtained. It is possible to confirm whether or not the operation is to be performed and to present to the operator what kind of work should be performed, and to what degree of torque value should be used for fastening. Hereinafter, each part will be described in more detail.

<Details of the configuration of the torque wrench 2>
Next, details of the configuration of the torque wrench 2 will be described. As shown in FIGS. 1 and 2, the torque wrench 2 includes a torque wrench body 11 and a head 12. The torque wrench body 11 includes a reader / writer unit 17, a first communication unit 18, a display unit 19, and a second communication unit 20.

  FIG. 3 is a cross-sectional view showing details of the configuration of the torque wrench 2. As shown in FIG. 3, the torque wrench 2 includes a head 12 that rotates with a head pin 12a as a fulcrum, a toggle 13, a thruster 14, a spring receiver 15, a main spring 16, and a spring adjustment mechanism that is not shown. It is equipped with. The head 12 is provided with a ratchet mechanism 121 including a spring 121a and a ratchet rotating body 121b including a ratchet pawl. The head 12 is well-known for fast tightening only in either the clockwise or counterclockwise direction. Mechanism. The ratchet rotating body 121b is integrally provided with a columnar corner drive portion 121c inserted into the socket hole 31. That is, the cylindrical socket 3 is attached to the corner drive part 121c.

  Further, the head 12 is provided with an arm-shaped head arm 122, and is provided so as to be rotatable about the head pin 12 a described above at a position on the ratchet mechanism 121 side of the head arm 122. The toggle 13 is connected to the rear end 123 of the head arm 122.

  The toggle 13 is a link-like member, one end of which is connected to the rear end 123 of the head 12 and the other end is connected to the thruster 14. The thruster 14 presses the rear end portion 123 through the toggle 13 by the main spring 16 and restricts the relative rotation of the rear end portion 123 relative to the torque wrench main body 11 until the tightening torque by the torque wrench 2 reaches a predetermined torque. . The attachment position of the thruster 14 with respect to the toggle 13 is different from the rear end portion 123 in the width direction of the torque wrench 2. The spring receiver 15 is a member that receives the pressing force of the main spring 16 and presses the thruster 14.

  The deformation amount of the main spring 16 is adjusted by an adjustment by a spring adjustment mechanism (not shown), and the force for pushing the thruster 14 is changed, whereby the torque for rotating the toggle 13 is changed.

  The operation when the IC tag bolt 4 is tightened using the torque wrench 2 will be briefly described. When the user grips the torque wrench body 11 and the tightening of the bolt 4 with the IC tag is started, a force is applied to rotate the rear end portion 123 so as to push the thruster 14 backward. When the force that the rear end portion 123 tries to push back the thruster 14 against the force of the main spring 16 exceeds the force that the thruster 14 presses the rear end portion 123 by the force of the main spring 16. The toggle 13 is rotated. By the rotation, the rear end portion 123 moves upward in FIG. 3 and generates a click sound that strikes the inner wall of the housing. Thereby, the user can recognize that the tightening torque of the bolt 4 with the IC tag has reached a predetermined set torque value. Note that the cable 12B is a high-frequency cable for transmitting signals, and can be a commonly used, for example, twisted pair wire, coaxial wire, or a combination thereof.

  The reader / writer unit 17 is incorporated in the torque wrench main body 11 or in a housing that covers the head 12, and is connected to the IC tag detection unit 12A of the head 12 by a cable 12B. The reader / writer unit 17 includes a reader / writer control unit (not shown). The reader / writer control unit acquires a signal detected by the IC tag detection unit 12A via the cable 12B. Based on the signal, the IC tag 3A and Each identification information can be acquired from the IC tag 4A.

  The first communication unit 18 is a communication interface for a reader / writer control unit (not shown) to exchange information with the information management server 6 described later. The first communication unit 18 is, for example, a Bluetooth (registered trademark) module, a WiFi module, or another wireless communication module. The first communication unit 18 does not necessarily need to be able to communicate directly with the information management server 6, and may be, for example, a USB interface. Information may be transmitted and received by connecting an interface.

  The display unit 19 causes the torque control unit (not shown) to display information transmitted from the information management server 6 described later. The display unit 19 may be configured to display the identification information read from the IC tag 3A of the socket 3 or the IC tag 4A of the bolt 4 with the IC tag by the reader / writer unit 17 or information found from the identification information. Good.

  The second communication unit 20 is a communication interface for a torque control unit (not shown) to exchange information with the information management server 6 described later. The second communication unit 20 is, for example, a Bluetooth (registered trademark) module, a WiFi module, another wireless communication module, or the like. Note that the second communication unit 20 does not necessarily need to be able to communicate directly with the information management server 6, and may be, for example, a USB interface. In this case, a device directly communicating with the information management server 6 and the USB interface May be connected to transmit and receive information. In addition, although the 1st communication part 18 and the 2nd communication part 20 are comprised separately, you may make it comprise these with one communication part. In addition, an overall control unit that controls the entire operation of the torque wrench 2 by controlling the reader / writer control unit and the torque control unit (not shown) may be provided.

  As shown in FIG. 1, the corner drive portion 121 c is a portion that fits into the socket hole of the socket 3, and an insertion hole 124 for inserting the cable 12 </ b> B is provided on the inner side thereof. In the corner drive part 121 c, a recess 125 is provided on the end side of the insertion hole 124 so as to communicate with the insertion hole 124. The recess 125 is provided with an IC tag detection unit 12A that can be moved in and out.

  The IC tag detection unit 12A is a detection part including an antenna coil, for example, and is electrically connected to the cable 12B. The antenna coil of the IC tag detection unit 12A is disposed at the center of the rotation axis L of the corner drive unit 121c. In addition, a spring 12C is disposed on the outer periphery of the cable 12B on the IC tag detection unit 12A side, and plays a role of pressing the IC tag detection unit 17A against the installation region 33. Although details will be described later, the IC tag detection unit 12A detects both the IC tag 3A of the socket 3 itself and the IC tag 4A of the bolt 4 with the IC tag in a series of operations with the torque wrench 2. It is configured to be able to.

  Next, the configuration of the information management server 6 will be described. As illustrated in FIG. 1, the information management server 6 includes a control unit 21, a communication unit 22, and a storage unit 23. The control unit 21 controls the operation of the entire server. Specifically, the control unit 21 determines whether the socket 3 is correct from the identification information of the IC tag 3A incorporated in the socket 3 supplied from the torque wrench 2, or is incorporated in the bolt 4 with IC tag. The correctness / incorrectness of the IC tag bolt 4 can be determined from the identification information of the IC tag 4A, or a predetermined torque value can be instructed to the torque wrench 2 based on these correctness / incorrectness determinations. In the storage unit 23, a registration ID ledger 23A in which identification information of each of the torque wrench 2, the socket 3, and the IC tag bolt 4 is registered, time information in which information received by the information management server 6 is recorded, and identification thereof A recording ledger 23B that records information in association with each other and a registered work ledger 23C in which information related to a predetermined work (for example, tool information used for work, tool torque value information, etc.) are stored.

<Appearance of socket 3>
As shown in FIG. 2, the socket 3 is provided on the side to be fitted with the socket hole 31 provided on the torque wrench 2 on the side where the angular drive part 121 c is inserted and the head of the bolt 4 with IC tag. It is comprised from the aperture part 32 currently made. Between the socket hole 31 and the aperture portion 32, an installation area 33 for the IC tag 3A is provided.

<Appearance of bolt 4 with IC tag>
4 and 5 are diagrams showing IC tag bolts 51 and 52 as another example of the IC tag bolt 4 shown in FIG. In the IC tag bolts 51 and 52, when a UHF band high frequency electromagnetic wave is applied to the metal surface, a high frequency current such as a standing wave different from the eddy current is generated on the metal surface of the IC tag bolts 51 and 52. Although it may be configured to flow, such a high-frequency current may not be configured so that the IC tag detection unit 12A is sufficiently close to the IC tag 51A.

  The bolt 51 with an IC tag shown in FIG. 4 is a fastening member of the type in which an IC tag 51A is embedded in the head of the bolt. As shown in FIG. 4A, the IC tag bolt 51 is composed of a head 61 and an anchor bolt 62. The IC-tagged bolt 51 includes a cross-shaped first recess 61A having at least one groove cut to both ends of the head 61 with respect to the recess formed at the apex of the head 61, and the first recess 61A. The second recess 61B is formed on the bottom surface of the groove of the cross-shaped central portion of the first recess 61A and further recessed from the first recess 61A. Further, the IC tag folder 63 is fitted into the first recess 61A and the second recess 61B formed in the head 61 of the anchor bolt 62, whereby the IC tag bolt 51 is obtained.

  As shown in FIGS. 4B, 4C, and 4D, the IC tag folder 63 includes a circular lid 62A that can be fitted to the head 61, and the circular lid 62A. Grooves formed from the convex portions 64 and 65 corresponding to the shapes of the concave portions 61A and 61B of the head 61, and cut into both ends of the head 61 inside the IC tag folder 63. The IC tag 51A is fixed so as to be arranged orthogonally to each other.

  A bolt 52 with an IC tag of the type shown in FIG. The IC-tagged bolt 52 shown in FIG. 5A shows a state where a nut 71 is attached. The IC tag bolt 52 has a screw member 72 and an IC tag folder 73. The screw member 72 has a head portion 74 and a screw portion 75 in the same manner as a normal screw. Of these, the head portion 74 is a portion provided with a larger diameter than the screw portion 75, and is a portion where no screw thread and screw valley are formed. The screw portion 75 is a portion where a screw thread and a screw valley are formed, and is a portion into which the nut 71 is screwed. In the IC tag bolt 52, a through hole 76 is formed so that the width direction thereof becomes the center line, and a slit 78 is provided from the top surface 77 toward the through hole 76 and continuous with the through hole 76. It has been. For this reason, the magnetic field lines can enter the inside of the IC tag folder 73 from the end face of the IC tag folder 73 that is not covered with the nut 71 and can pass through the slit 78.

  The IC tag bolts 51 and 52 have hexagonal heads 61 and 74 in a plan view. However, the shape of the heads 61 and 74 when viewed in plan is, for example, a polygonal shape such as a triangular shape or a rectangular shape, a shape having a curve such as a circular shape or an elliptical shape, or a shape having other regular or irregular contours. Various shapes can be adopted. Further, these IC tag-attached bolts 51 and 52 are configured so that they can be detected from the sky by a commercially available reader / writer device, and therefore differ from the IC tag 3A of the IC tag-attached bolt 4 of FIG. Although it is configured, even such bolts 51 and 52 with IC tags can be detected. In addition, although the cross groove on the surface of the bolt 51 with the IC tag is a groove cut to both ends of the head 61, a secondary current can be generated in the coil antenna in the IC tag 51A, and the sensitivity is low. However, the groove is not necessarily cut to both ends as long as it is operable.

<Operation procedure of torque wrench 2>
In the automatic recognition system 1A composed of the torque wrench 2, the socket 3 and the IC tag bolts 51 and 52 described above, for example, an operator can perform a series of operations using the torque wrench 2 by the following steps. it can.

  For example, the worker starts a series of work using the torque wrench 2 in accordance with a work instruction or the like. When the worker starts a series of work, the torque wrench 2 communicates with the communication unit 22 of the information management server 6 through the first communication unit 18 to identify the torque wrench 2 and identify the work. Processing, identification processing of the socket 3 attached to the torque wrench 2, and identification processing of the IC tag bolt 4 are executed. For example, the torque wrench 2 transmits the identification information of the torque wrench 2, the identification information of the socket 3, the user information of the person in charge of the work, the information indicating the work place, the identification information for specifying the work, and the like to the information management server 6.

  On the information management server 6 side, the worker refers to the information in the registration ID ledger 23A, the recording ledger 23B, and the registered work ledger 23C stored in the storage unit 23 based on the information transmitted from the torque wrench 2, and the operator Identify the work you are going to do. When the operator's work is specified in the information management server 6, the process proceeds to the determination work of the socket 3 and the determination work of the bolt 4 with the IC tag. When information indicating the determination result of the socket 3 is transmitted from the information management server 6 to the torque wrench 2, the determination result is displayed on the display unit 19 of the torque wrench 2. In addition, when the determination result of the socket 3 is correct, the information management server 6 transmits information indicating the torque value at the torque wrench 2, and the instructed torque value is displayed on the display unit 19 of the torque wrench 2. The

<About the operating principle>
Subsequently, an operation principle of detecting the IC tags 3A and 4A with the torque wrench 2 will be described. 6 shows the detection antenna 81 of the IC tag detection unit 17A, the coil surface C1 of the antenna coil 82 included in the IC tag 3A of the socket 3, and the coil surface C2 of the antenna coil 83 of the IC tag 4A of the bolt 4 with IC tag. It is a figure for demonstrating mutual mutual induction relationship. In FIG. 6, the metal structure is omitted for convenience of explanation.

  In FIG. 6, when the detection antenna 81 is compared to a primary coil of a transformer, the secondary coil that forms a mutual induction relationship with this becomes the antenna coil 82 of the IC tag 3A in the socket 3, and the tertiary coil is a bolt with an IC tag. 4 becomes the antenna coil 83 of the IC tag 4A incorporated in the antenna 4. FIG. 5 illustrates a state in which the detection antenna 81 of one IC tag is coupled to the two antenna coils 82 and 83 by the magnetic field line Φ1 which is in a mutual induction relationship, but the socket 3 can be replaced. In the case of a type in which the socket 3 is fixed to the torque wrench 2 from the beginning, it is not necessary to identify the socket 3 itself. In this case, the IC tag 3A incorporated in the socket 3 may be omitted. In FIG. 6, the detection antenna 81 is shown as a one-turn coil. However, when the mutual induction efficiency is optimally adjusted, the detection antenna 81 may be two-turn or three-turn, and is limited to one turn. Not.

<Detection sensitivity>
Subsequently, the detection sensitivity will be described. FIG. 7 is a diagram for explaining the detection sensitivity according to the relationship between the antenna coil surface of the IC tag detection unit 12A and the antenna coil surface inside each IC tag. In FIG. 7, it is preferable that the coil surface of the antenna coil of the IC tag detector 12A and the surface of the antenna coil inside the IC tag 3A are parallel to each other. However, as long as the magnetic field line Φ1 has a shared portion, a position where the angle θ between these coil surfaces is an angle between parallel (θ = 0 ° or 180 °) and orthogonal (θ = 90 °). Relationship may be. In the example shown in FIG. 7, the angle θ1 between the antenna coil surface of the IC tag detection unit 17A and the antenna coil surface of the IC tag 3A of the socket 3 is inclined 45 ° with respect to the rotation axis L. On the other hand, the angle θ2 of the antenna coil surface of the IC tag of the bolt 4 with the IC tag is orthogonal to the rotation axis L. When the angle θ formed between the coil surfaces is parallel, the magnetic field lines Φ2 of the non-shared portion are minimized, and dense mutual induction occurs. On the other hand, when the angle θ formed between the coil surfaces is orthogonal (θ = 90 °), the magnetic lines of force Φ1 of the shared portion are minimized, resulting in a rough mutual induction relationship and low detection sensitivity.

  As described above, the torque wrench 2 according to the present embodiment can be attached with the socket 3 according to the type of the bolt 4 (tightening member) with the IC tag, and is inserted into the socket hole of the socket 3 to rotate the socket 3. The drive unit 121c and the IC tag detection units 12A and 17A attached to the corner drive unit 121c are configured. With such a configuration, the IC tag detection units 12A and 17A are integrated with the torque wrench, so that the information on the IC tag can be recognized by a single wrench operation. Not only is it possible to save the trouble of changing the torque wrench, but it is not necessary to change the torque wrench. Therefore, visual errors due to eye movement can be reduced, and human errors such as operation errors of each device can be reduced.

  Further, the IC tag detection units 12A and 17A of the present embodiment have antennas for detecting the IC tags 3A and 4A, and are configured such that the antennas are located on the rotation axis of the angular drive unit 121c. . As a result, the IC tag detection unit 12A can easily read the IC tag 4A attached to the IC tag bolt 4 and can reliably detect the IC tag 4A attached to the target IC tag bolt 4. it can.

  Furthermore, in this embodiment, a spring 12C (elastic member) is provided between the corner drive unit 121c and the antennas of the IC tag detection units 12A and 17A. As a result, the IC tag detection units 12A and 17A are securely fixed to the bottom surface of the socket 3, and the antenna coils of the IC tag detection units 12A and 17A are arranged at the center of the rotation axis L of the angular drive unit 121c of the tool. Therefore, the detection state of the IC tag 3A of the socket 3 and the IC tag 4A of the bolt 4 with the IC tag can be kept good.

  Further, in the present embodiment, the reader / writer unit 17 that is connected to the IC tag detection units 12A and 17A and acquires the respective identification information of the socket 3 and the bolt 4 with IC tag, and the socket 3 that is acquired by the reader / writer unit 17 and It has the 1st communication part 18 which transmits each identification information of the bolt 4 with an IC tag to the information management server 6, and the display part 19 which displays the information transmitted from the information management server 6. As a result, the operator can display whether the torque wrench 2 is the correct socket 3, the correct IC tag bolt 4, whether these combinations are correct, and what the torque value is. Since the operation can be performed while checking the part 19, it is possible to efficiently perform a series of operations and reduce human errors.

  The automatic recognition system 1A of the present embodiment is a communication unit that receives the identification information of the IC tags 3A and 4A of the socket 3 and the bolt 4 with IC tag transmitted from the first communication unit 18 of the torque wrench 2. 22 (reception unit) and a control unit 21 (determination unit) that performs predetermined work determination based on the identification information received by the communication unit 22 and transmits the determination result information to the second communication unit 20 of the torque wrench 2. The torque wrench 2 can display the determination result transmitted from the information management server 6 on the display unit 19. Thereby, in this automatic recognition system 1A, whether or not the operator is the correct socket 3, whether or not the correct IC tag bolt 4 is used, whether or not these combinations are correct, and what is the torque value? Therefore, it is possible to perform a series of operations efficiently and reduce human errors.

<About other modifications>
As mentioned above, although the torque wrench 2 and the automatic recognition system 1A were demonstrated as one Embodiment of this invention, a various deformation | transformation is possible. For example, when the antenna coil of one IC tag detection unit 12A has a mutual induction relationship with a plurality of IC tags, and when the antenna coil of one IC tag detection unit 12A has a mutual induction relationship with a single IC tag Are compared, it is known that electromagnetic coupling in a single mutual induction relationship is stronger. Therefore, the socket 3 may be configured to have a single mutual induction relationship. Hereinafter, a modification example having a single mutual induction relationship will be described.

  FIG. 8 is a block diagram showing a configuration of an automatic recognition system 1B according to another embodiment of the present invention. FIG. 9 is a perspective view showing an example of the appearance of the torque wrench 2 and the socket 30A shown in FIG. FIG. 10 is a diagram for explaining a preferable positional relationship of the IC tag 3A in the socket 30A shown in FIGS. FIG. 11 is a diagram for explaining a preferred position of the IC tag 3A in a socket 30B of a type different from the socket 30A. In addition, about the function similar to 1 A of automatic recognition systems shown in FIG. 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted. In the automatic recognition system 1B shown in FIG. 8, since the configuration of the socket 30A is different from the socket 3 shown in FIG. 1, the following socket 30A will be described.

<Preferred positional relationship of IC tag in socket 30A>
As shown in FIG. 10A, a notch 34 is provided on the outer edge of the socket 30 </ b> A, and the IC tag 3 </ b> A is disposed inside the notch 34. A strength maintaining portion 31A is provided adjacent to the socket hole 31, and a notch 34 is provided at a portion sandwiching the strength maintaining portion 31A. In the direction along the rotation axis L described above, when the AA line cross section is taken so as to cut the cutout portion 34, the cutout portion 34 is provided so that the AA cross section has a triangular shape. At this time, the IC tag unit 40 in which the IC tag 3 </ b> A is covered with the insulating resin 41 that is a dielectric member is disposed in the notch 34. Further, as shown in FIGS. 10B, 10C, and 10D, the inclination angle θ of the IC tag 3A is arranged to be 90 degrees with respect to the installation surface T1.

  Further, the front and back surfaces of the IC tag 3A having the antenna coil 82 (see FIG. 6 and the like; not shown in FIG. 10) are parallel or inclined with respect to the outer surface at different positions of the insulating resin 41 as a dielectric member. Is provided in the arrangement. For example, in the configuration shown in FIG. 10, the end surface 40a provided on the same surface as the end surface side of the socket 30A in the IC tag unit 40 and the curved outer peripheral surface 40b of the IC tag unit 40 are the front and back surfaces of the IC tag 3A. In contrast, the arrangement is inclined. Thereby, a closed loop can be formed in a state where the magnetic lines of force are not blocked by the metal socket 30A.

  Further, as shown in FIG. 11A, an IC tag unit having a notch 34 provided so as to cut out from the outer peripheral surface of the socket 30A toward the socket hole 31, and having an IC tag 3A inside the notch 34. 40 may be arranged. When taking the BB line cross section so as to cut the notch 34 in the direction along the rotation axis L described above, the notch 34 has a quadrilateral BB cross section shown in FIG. It is provided as follows. In the configuration shown in FIG. 11, the IC tag unit 40 is provided so that the cross section of the BB line is rectangular, and the IC tag 3 </ b> A is parallel to the rotation axis L. ing. At this time, when the bottom surface of the notch 34 is used as the installation surface of the IC tag unit 40, as shown in FIGS. 11B, 11C, the inclination angle θ of the IC tag 3A is set as follows. When T2 is used as a reference, they are arranged to be 90 degrees.

  FIG. 12 is a diagram for explaining the relationship of electromagnetic mutual induction according to the state of operation of the sockets 30 </ b> A and 30 </ b> B and the torque wrench 2 of FIGS. 10 and 11. FIG. 12A shows an IC tag 3A provided in the IC tag unit 40 embedded in a notch 34 of the type shown in FIG. FIG. 12B shows the IC tag 3A of the IC tag unit 40 embedded in the notch 34 of the type shown in FIG. In order to achieve the positional relationship of (a) and (b) in FIG. 12, for example, an operator brings the square drive part 121c of the torque wrench 2 close to the vicinity of the socket hole 31 of the sockets 30A and 30B. It is necessary to operate the detector 12A and the IC tag 3A so as to have a positional relationship.

  FIG. 12C shows a state in which the sockets 30A and 30B are completely inserted into the corner drive part 121c of the torque wrench 2 and fixed with the stopper 126 (protrusion part) so that the torque wrench 2 can be operated at any time. It has become. In this state, the IC tags 3A of the sockets 30A and 30B are in a positional relationship that is separated from the IC tag detection unit 12A so as not to be in mutual induction. If the IC tag detector 12A has a diameter of about 4 mm, 1 mW is 0 dB, and the power is expressed in dB, dBm is not related to mutual induction at 30 dBm of UHF (920 MHz). It has been confirmed by experiments that the distance is 5 mm or more. Further, in FIG. 12D, when the torque wrench 2 is pressed against the bolt 4 with IC tag, the IC tag detector 12A detects the IC tag 4A of the bolt 4 with IC tag. At this time, it is a single mutual induction. That is, in the case shown in FIGS. 11A, 11B, and 11D, a single mutual induction state is established, and detection can be performed under high sensitivity conditions.

  Note that the sockets 30A and 30B of the type shown in FIGS. 10 and 11 are particularly effective when the reader / writer device collectively detects radiation waves that reach far away. FIG. 13 is a diagram showing a concept of collectively detecting a plurality of sockets 91 to 94 having a rectangular socket hole 31 having a square shape as shown in FIG. is there. IC tag units 401 to 404 are attached to the sockets 91 to 94, respectively.

  FIG. 14 is a diagram for explaining processing for collectively detecting the plurality of sockets 91 to 94 shown in FIG. 13 by the reader / writer device 95. In FIG. 14, the socket 93 is described as an example, but the same applies to the other sockets 91, 92, and 94.

  FIG. 14 shows the magnetic field component Φ extracted from the electromagnetic field component of the radiated radio wave, which is irradiated from the reader / writer device 95, passes through the antenna coil surface of the IC tag 3A of the IC tag unit 401, and generates an induced current in the coil. The IC chip (not shown) connected to the antenna coil is activated. The IC chip establishes communication with the IC tag by responding to the reader / writer device 95 by following the course opposite to that when receiving the tag information via the induced current of the antenna coil and the magnetic field created in the space by the tag information. . Note that the diagram shown in FIG. 14 shows the concept of propagation of radiated radio waves, and is not a magnetic field distribution diagram by precise electromagnetic analysis in consideration of the shape of the metal surface, the medium constant, and the like.

  Note that the IC tag 3A mounting angle θ in the IC tag units 401 to 404 mounted on the outer edge portions of the sockets 91 to 94 is based on the installation surface as described with reference to FIGS. In this case, the distance of communication increases, and the IC tags 3A of the respective IC tag units 401 to 404 can be collectively detected with the radiated radio waves of the reader / writer device. For example, even when the sockets 91 to 94 are housed in the tool box, it is effective for a tool check operation in which a plurality of sockets 91 to 94 are collectively checked.

  In the above embodiment, the stopper 126 (protrusion part) is provided on the outer surface of the corner drive part 121c, and this stopper 126 is provided when the corner drive part 121c is inserted into the socket hole 31 (socket hole) of the socket 3. The corner drive part 121c is for fixing the corner drive part 121c. When the corner drive part 121c is inserted into the socket hole 31 and fixed by the stopper 126, as described with reference to FIG. The positional relationship is such that an electromagnetic coupling relationship does not occur between the antenna of the IC tag detection unit 12A and the IC tag 3A provided in the socket 3.

  When the sockets 30A and 30B, the sockets 91 to 94 and the IC tag bolt 4 are fitted in this state, the antenna of the IC tag detection unit 12A and the IC tag 4A provided on the IC tag bolt 4 are connected. An electromagnetic coupling relationship by mutual induction occurs, and information can be read only from the IC tag 4A of the bolt 4 with IC tag. Thereby, it is comprised so that the antenna of the torque wrench 2 may not read information from different IC tags 3A and 4A by mistake. In the above example, the positional relationship is such that the electromagnetic coupling relationship does not occur. However, even if the mutual coupling electromagnetic coupling relationship occurs, information is read from the IC tags 3A of the sockets 30A and 30B and the sockets 91 to 94. It may be a positional relationship where the sensitivity is such that it cannot be detected.

  In the torque wrench 2 described above, the reader / writer unit 17 is integrated, but in addition to that, only the detection function of the conventional reader / writer unit 17 is integrated with the torque wrench 2, and other functions (reader device and power supply). ) May be connected to another device via a cable. FIG. 15 is a block diagram showing a configuration of an automatic recognition system 1C showing another embodiment. In addition, about the function similar to 1 A of automatic recognition systems shown in FIG. 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the torque wrench 2A of the automatic recognition system 1C, the reader / writer unit 17 and the first communication unit 18 are not built in the torque wrench main body 11, but are inside the external reader / writer device 110 and are connected by the cable 12B. It is a configuration. By using such a torque wrench 2A, it is possible to secure the weight of the reader / writer device 110 and the power from the power outlet 111 of the reader / writer device 110. Therefore, compared with the torque wrench 2 by the amount of these capacities. Lightweight and downsizing.

  In the above-described embodiment, a signal type torque wrench is described as an example of the torque wrench 2. The signal type torque wrench may be of any type such as a preset type, a single type, a pre-lock type. However, the torque wrench is not limited to a signal type, and may be a direct-reading type torque wrench of a type that reads a loaded torque on a scale, for example. As a direct-reading type torque wrench, any type such as a plate type, a dial type and a digital type may be used. The torque wrench 2 is described as an example of a type in which the socket 3 can be replaced, but may be of a type in which the socket 3 cannot be replaced.

  In addition, as the antennas of the IC tag detection units 12A and 17A and the IC tags 3A, 4A, 51A, and 52A of the above-described embodiment, those corresponding to UHF band electromagnetic waves such as 920 MHz can be cited. However, the IC tags 3A, 4A, 51A, 52A of the present embodiment may correspond to other frequencies. As other frequencies, for example, LF band (125/135 kHz) frequency, HF band frequency such as 13.56 MHz, microwave band electromagnetic wave such as 2.45 GHz may be supported.

  In addition, although the attachment structure of the IC tag in the above-mentioned embodiment has exemplified the sockets 30A and 30B and the sockets 91 to 94, they may be applied to other metal tools.

1, 1A, 1B, 1C ... automatic recognition system, 2, 2A, 2B ... torque wrench, 3, 30A, 30B, 91-94 ... socket, 3A, 4A, 51A, 52A ... IC tag, 4, 51, 52 ... IC tag bolt, 6 ... information management server, 12A, 17A ... IC tag detection unit, 12C ... spring, 17 ... reader / writer unit, 18 ... first communication unit, 19 ... display unit, 20 ... second communication unit, 31 ... Socket hole, 34 ... Notch, 40,401 ... IC tag unit, 40a ... End face, 40b ... Outer peripheral surface, 41 ... Insulating resin, 75 ... Screw part, 76 ... Through hole, 121c ... Square drive part, 126 ... Stopper (Example of protrusion)

Claims (6)

A torque wrench capable of rotating a fastening member,
When rotating the fastening member, an IC tag detection unit that is located inside a socket for fastening the fastening member and detects an IC tag incorporated in the fastening member ;
An angular drive unit that is inserted into a socket hole of the socket and rotates the socket;
The IC tag detection unit is attached to the corner drive unit,
Torque wrench characterized by that. The torque wrench according to claim 1,
The IC tag detection unit
A torque wrench having an antenna for detecting the IC tag, wherein the antenna is located on a rotation axis of the angular drive unit . The torque wrench according to claim 2,
Protrusions are provided on the outer surface of the corner drive part,
The protrusion is a portion for attaching the socket by fitting when the angular drive portion is inserted into a socket hole of the socket,
The socket is provided with an IC tag, and when the socket is fixed to the square drive unit by the protrusion, the IC tag detection unit includes an antenna and an IC tag provided in the socket. It becomes a positional relationship that does not cause an electromagnetic coupling relationship between mutual induction between them, or even if an electromagnetic coupling relationship occurs, it becomes a positional relationship that has a sensitivity that cannot read information from the IC tag of the socket,
When the socket and the fastening member are fitted in this state, an electromagnetic coupling relationship is generated by mutual induction between the antenna of the IC tag detection unit and the IC tag provided on the fastening member, and the fastening member Configured to be able to read information only from the IC tag of
Torque wrench characterized by that. The torque wrench according to claim 3,
In the corner drive unit, an insertion hole for inserting a cable for electrically connecting the IC tag detection unit is provided so as to penetrate the corner drive unit,
The end of the insertion hole on the side where the IC tag detection unit is attached is provided with a recess into which the IC tag detection unit enters,
The IC tag detection unit is attached to the corner drive unit via a spring, so that a biasing force in a direction protruding from the recess is given.
Torque wrench characterized by that. The torque wrench according to any one of claims 1 to 4 ,
A reader / writer unit that is connected to the IC tag detection unit and acquires identification information of the socket and the fastening member;
A communication unit for transmitting each identification information of the socket and the fastening member acquired by the reader / writer unit to an information management server;
A display unit for displaying information transmitted from the information management server;
Torque wrench characterized by having. A torque wrench according to claim 5;
A receiving unit that receives each identification information of the socket and the bolt transmitted from the communication unit of the torque wrench, a work determination unit that performs a predetermined work determination based on each identification information received by the receiving unit, and An information management server having a transmission unit that transmits the determination result information of the work determination unit to the communication unit of the torque wrench,
The automatic recognition system, wherein the determination result transmitted from the information management server is displayed on the display unit.