WO2020189474A1 - Looseness detection label and looseness detection structure - Google Patents

Looseness detection label and looseness detection structure Download PDF

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Publication number
WO2020189474A1
WO2020189474A1 PCT/JP2020/010712 JP2020010712W WO2020189474A1 WO 2020189474 A1 WO2020189474 A1 WO 2020189474A1 JP 2020010712 W JP2020010712 W JP 2020010712W WO 2020189474 A1 WO2020189474 A1 WO 2020189474A1
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WO
WIPO (PCT)
Prior art keywords
region
looseness detection
attached
bolt
looseness
Prior art date
Application number
PCT/JP2020/010712
Other languages
French (fr)
Japanese (ja)
Inventor
夏樹 菰田
諒 松保
格 宮本
大輔 都成
武宏 西村
與志 佐藤
Original Assignee
トッパン・フォームズ株式会社
川崎重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2020033383A external-priority patent/JP7412220B2/en
Application filed by トッパン・フォームズ株式会社, 川崎重工業株式会社 filed Critical トッパン・フォームズ株式会社
Publication of WO2020189474A1 publication Critical patent/WO2020189474A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/59—Responders; Transponders

Definitions

  • the present invention relates to a looseness detection label and a looseness detection structure that detect looseness of a tightening member tightened to a tightening target component via non-contact communication.
  • non-contact communication media using RFID technology such as non-contact IC labels and non-contact IC tags equipped with IC chips capable of writing and reading information in a non-contact state have been excellent. Due to its convenience, it is rapidly becoming widespread. Therefore, it is considered to use such RFID technology even when detecting the looseness of the bolt described above.
  • Patent Document 1 describes a technique in which an IC tag is attached to a cap portion of a bolt, and a conductor piece made of a metal or the like having an opening is attached to a ring fixed to a member to which the bolt is tightened. It is disclosed.
  • the IC tag faces the opening to enable reading to the IC tag, and if the bolt is loose, the bolt rotates to cause the IC tag to read. It does not face the opening, making it impossible to read the IC tag. Thereby, loosening of the bolt can be detected.
  • loosening of bolts can be detected without the need for large-scale equipment, dedicated bolts, washers, jigs, or the like.
  • the present invention is a looseness detection label that detects looseness of a tightening member tightened to a tightening target component via non-contact communication.
  • the looseness detection label and looseness that make it easy to obtain a sufficient communication distance even when the tightening member is small.
  • the purpose is to provide a detection structure.
  • the looseness detection label of the present disclosure is A looseness detection label that detects looseness of the tightening member tightened to the part to be tightened via non-contact communication.
  • An adhesive layer is laminated on one surface, and the band-shaped first region to be attached along the side surface of the tightening member and the first region extending in a direction orthogonal to the longitudinal direction of the first region.
  • a second region connected to the first region and adhered so as to face the tightening member from the upper surface to the side surface thereof and the second region connected to the opposite side of the first region.
  • a base base material provided with a third region to be attached to the tightening target part, and A communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
  • Looseness detection wiring formed across the second region and the third region of the base base material, and It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna. It has a detection means for non-contact transmission, The first region has a length that does not overlap the second region when the loosening detection label is attached across the tightening member and the tightening target component.
  • the looseness detection structure of the present disclosure includes parts to be tightened and The tightening member tightened to the tightening target part and A non-conductive member having an outer shape substantially the same as the shape of the upper surface of the tightening member and attached to the upper surface of the tightening member.
  • An adhesive layer is laminated on one surface, and the band-shaped first region wound around the side surface of the non-conductive member and attached by the adhesive layer and the direction orthogonal to the longitudinal direction of the first region.
  • a second region that is connected to the first region so as to extend and is adhered by the adhesive layer from the upper surface to the side surface of the non-conductive member and further to the side surface of the tightening member, and the second region.
  • a base base material which is connected to the side of the region opposite to the first region and includes a third region which is attached to the tightening target component by the adhesive layer.
  • a communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
  • Looseness detection wiring formed across the second region and the third region of the base base material, and It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna.
  • the first region has a length that does not overlap with the second region attached to the side surface of the non-conductive member and the tightening member in a state of being wound and attached to the side surface of the non-conductive member.
  • FIG. 1a It is a top view which shows the 1st Embodiment of the looseness detection label of this disclosure. It is a side view seen from the A direction shown in FIG. 1a. It is a top view which shows an example of the adherend to which the looseness detection label shown in FIG. 1a and FIG. 1b is attached. It is a side view seen from the direction of arrow A shown in FIG. 2a. It is a top view which shows an example of the state in which the looseness detection label shown in FIGS. 1a and 1b is attached to the adherend shown in FIGS. 2a and 2b. It is a side view seen from the A direction shown in FIG. 3a. Top surface for explaining the action when the bolt is loosened when the looseness detection label shown in FIGS.
  • FIGS. 1a and 1b is attached across the bolt and the base as shown in FIGS. 3a and 3b. It is a figure. It is a side view seen from the A direction shown in FIG. 4a. In the looseness detection label shown in FIGS. 1a and 1b, as shown in FIGS. 4a and 4b, the attachment area attached to the side surface of the spacer and the side surface of the head portion of the bolt and the attachment attached to the base. It is a figure for demonstrating the action when the distortion occurs with a region. It is a figure which shows an example of the system for detecting looseness of a bolt with respect to a base using the looseness detection label shown in FIG. 1a and FIG. 1b.
  • FIG. 8 is a top view showing an example of a state in which the looseness detection label shown in FIGS. 8a and 8b is attached to an adherend having the same shape as the adherend shown in FIGS. 2a and 2b. It is a side view seen from the A direction shown in FIG. 9a.
  • FIGS. 9a and 9b Top surface for explaining the action when the bolt is loosened when the looseness detection label shown in FIGS. 8a and 8b is attached across the bolt and the base as shown in FIGS. 9a and 9b.
  • FIG. 1a is a top view showing a first embodiment of the looseness detection label of the present disclosure.
  • FIG. 1b is a side view seen from the direction A shown in FIG. 1a.
  • this embodiment is a looseness detection label 1 having a spacer 20 attached to one surface of the film substrate 10.
  • the film substrate 10 is the base substrate in the present disclosure.
  • the film substrate 10 is made of, for example, a PET film having a thickness of 70 ⁇ m or the like.
  • the film substrate 10 is laminated with an adhesive layer 30a to be a sticking layer by applying an adhesive to the entire surface of one surface.
  • the film substrate 10 is configured by connecting four attachment regions 10a to 10d in this order.
  • the sticking area 10a is the first area in the present disclosure.
  • the attachment region 10a has a band shape, and folded portions 16a to 16d are provided at equal intervals in the longitudinal direction thereof.
  • the surface of the attachment region 10a on the side opposite to the surface on which the adhesive layer 30a is laminated extends along the side surface of the attachment region 10a on the side of the connection side with the attachment region 10b in the longitudinal direction for communication.
  • the antenna 12 is formed.
  • the antenna 12 may have a shape of, for example, 3 ⁇ 50 mm.
  • the sticking region 10b is connected to the side side between the folded portions 16b and 16c of the sticking region 10a via the folded portion 15a so as to extend orthogonally to the longitudinal direction of the sticking region 10a.
  • a loop portion 14 connected to the antenna 12 is formed on the surface of the attachment region 10b opposite to the surface on which the adhesive layer 30a is laminated, and for looseness detection over the attachment regions 10b to 10d.
  • the wiring 13 is formed in a loop shape.
  • the IC chip 11 is mounted on the surface of the attachment region 10b where the loop portion 15 and the looseness detection wiring 13 are formed.
  • a spacer 20 is attached by the adhesive layer 30a to the surface of the attachment region 10b opposite to the surface on which the loop portion 15 and the loosening detection wiring 13 are formed.
  • the loop portion 14 is composed of, for example, a loop-shaped wiring having an outer shape of 6 ⁇ 10 mm.
  • the loop wiring 14 is connected to the antenna 12 and the IC chip 11.
  • the looseness detection wiring 13 extends from the end connected to the IC chip 11 to the attachment area 10d via the attachment area 10b and the attachment area 10c, and is folded back at the attachment area 10d to attach the attachment area 10d and the attachment area 10d. It extends to the attachment region 10d via the attachment region 10c, and the other end is connected to the IC chip 11 to form.
  • the IC chip 11 is a detection means in the present disclosure.
  • the IC chip 11 is provided with two antenna terminals (not shown) and two looseness detection terminals (not shown).
  • the IC chip 11 is mounted on the surface of the film substrate 10 on which the loop portion 15 and the looseness detection wiring 13 are formed, with the surface provided with the antenna terminal and the looseness detection terminal serving as a mounting surface.
  • Each of the antenna terminals of the IC chip 11 is connected to the antenna 12 via the loop portion 14.
  • the looseness detection terminals of the IC chip 11 are connected to both ends of the looseness detection wiring 13.
  • the IC chip 11 detects the resistance value of the loosening detection wiring 13 by passing a current due to electric power obtained by non-contact communication via the antenna 12 through the loosening detection wiring 13, and based on the resistance value, the IC chip 11 is used for loosening detection. The conduction state of the wiring 13 is detected, the detection result is converted into digital information, and non-contact transmission is performed via the antenna 12.
  • the spacer 20 is a non-conductive member in the present disclosure.
  • the spacer 20 has a regular hexagonal shape that is substantially the same as the shape of the upper surface of the bolt that is the tightening member to which the looseness detection label 1 is attached, and is orthogonal to the longitudinal direction of the attachment region 10a of the film substrate 10. It has approximately the same thickness as the width of.
  • the spacer 20 is made of a soft non-metal material such as, for example, a foamable acrylic resin.
  • the spacer 20 is attached to the attachment region 10b by the adhesive layer 30a so that one side thereof overlaps the folded portion 15a and the side facing the spacer 20 overlaps the connection side of the attachment region 10b with the attachment region 10c.
  • An adhesive layer 30b is laminated on the surface of the spacer 20 opposite to the attachment surface with the attachment region 10b by applying an adhesive to the entire surface thereof.
  • the sticking region 10c is connected to the side of the sticking region 10b facing the folded portion 15a via the folded portion 15b so as to extend in the direction opposite to the sticking region 10a.
  • a second region in the present disclosure is composed of the sticking region 10b and the sticking region 10c.
  • the sticking area 10d is the third area in the present disclosure.
  • the sticking region 10d is connected to the side of the sticking region 10c facing the folded portion 15b via the folded portion 15c so as to extend in the direction opposite to the sticking region 10b.
  • the folded portions 15a to 15c and 16a to 16d may be provided with perforations, streaks, or the like so that the film substrate 10 can be easily bent.
  • FIG. 2a is a top view showing an example of an adherend to which the looseness detection label 1 shown in FIGS. 1a and 1b is attached.
  • FIG. 2b is a side view seen from the direction of arrow A shown in FIG. 2a.
  • the looseness detection label 1 shown in FIGS. 1a and 1b is made of, for example, as shown in FIGS. 2a and 2b, a metal base 3 to be tightened and a metal base 3 to be tightened to the base 3. It is used by being attached to an adherend composed of the bolt 2.
  • a bolt 2 composed of a regular hexagonal head portion 2a and a screw portion 2b extending from one surface of the head portion 2a is provided, and a screw portion 2b is provided in a screw hole 3a formed in the base 3.
  • the bolt 2 is tightened to the base 3.
  • the bolt 2 may loosen due to vibration or the like applied from the outside, and the looseness detection label 1 shown in FIGS. 1a and 1b is used to detect the loosening.
  • FIG. 3a is a top view showing an example of a state in which the looseness detection label 1 shown in FIGS. 1a and 1b is attached to the adherend shown in FIGS. 2a and 2b.
  • FIG. 3b is a side view seen from the direction A shown in FIG. 3a.
  • the looseness detection label 1 shown in FIGS. 1a and 1b is attached to the adherend shown in FIGS. 2a and 2b and used for detecting looseness of the bolt 2, as shown in FIGS. 3a and 3b
  • the spacer 20 is attached by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment area 10a of the film substrate 10 is wound around the side surface of the spacer 20 and attached by the adhesive layer 30a.
  • the attachment region 10c of the film substrate 10 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 10 is attached to the base 3 It is attached to the surface of the surface with the adhesive layer 30a.
  • each of the five regions divided by the folded portions 16a to 16d of the sticking region 10a corresponds to each of the five side surfaces of the regular hexagonal side surface of the head portion 2a of the bolt 2.
  • the length of the sticking area 10a in the longitudinal direction is such that when the looseness detection label 1 is stuck across the bolt 2 and the base 3 as described above, the sticking area 10a does not overlap with the sticking area 10c. It has become.
  • the spacer 20 is attached so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment area 10a of the film substrate 10 is wound around the side surface of the spacer 20 and attached to the film substrate 10.
  • the sticking area 10a is in a state of being stuck along the side surface of the head portion 2a of the bolt 2.
  • the attachment region 10b faces the upper surface of the head portion 2a of the bolt 2 and the attachment region is attached.
  • 10c faces the side surface of the head portion 2a of the bolt 2.
  • the attachment regions 10b and 10c which are the second regions, are attached so as to face each other from the upper surface to the side surface of the head portion 2a of the bolt 2.
  • the spacer 20 having a regular hexagonal shape substantially the same as the shape of the upper surface of the head portion 2a of the bolt 2 has been described as an example, but the upper surface of the head portion 2a of the bolt 2 has been described as an example. It may be larger or smaller in size.
  • the looseness detection wiring 13 is formed in a loop shape to be in a conductive state. Then, the looseness detection label 1 is attached across the bolt 2 and the base 3 as described above, whereby a looseness detection structure for detecting the looseness of the bolt 2 with respect to the base 3 is formed.
  • FIG. 4a shows when the loosening detection label 1 shown in FIGS. 1a and 1b is loosened in the state where the loosening detection label 1 is attached across the bolt 2 and the base 3 as shown in FIGS. 3a and 3b. It is a top view for demonstrating the action of.
  • FIG. 4b is a side view seen from the direction A shown in FIG. 4a.
  • FIG. 5 shows a sticking region 10c attached to the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2 as shown in FIGS. 4a and 4b in the looseness detection label 1 shown in FIGS. 1a and 1b. It is a figure for demonstrating the action when the distortion occurs between the sticking area 10d stuck to the base 3.
  • the looseness detection label 1 is broken due to the distortion, and the looseness detection wiring 13 is disconnected accordingly, resulting in a non-conducting state. Then, by detecting the non-conducting state of the looseness detection wiring 13, it is detected that the bolt 2 tightened to the base 3 has loosened.
  • the looseness detection wiring 13 is in a conductive state, while the bolt 2 tightened to the base 3 is loosened.
  • the looseness detection wiring 13 is in a non-conducting state. Therefore, by detecting the continuity state of the looseness detection wiring 13, it is possible to detect that the bolt 2 is loose. At that time, by detecting that the bolt 2 is loose, the looseness detection label 1 is broken when the bolt 2 tightened to the base 3 is loosened, so that the base 3 can be loosened. Even if the tightened bolt 2 is loose, the looseness can be detected.
  • FIG. 6 is a diagram showing an example of a system for detecting looseness of the bolt 2 with respect to the base 3 by using the looseness detection label 1 shown in FIGS. 1a and 1b.
  • FIG. 1 A system having a reader / writer 5 as a reading means and a management personal computer 6 as a processing means connected to the reader / writer 5 via a wire or wireless can be considered. It is also conceivable to use a handy terminal having a built-in processing means as well as a reading means as a reader / writer, in which case a management personal computer becomes unnecessary.
  • FIG. 7 is a flowchart for explaining a method of detecting looseness of the bolt 2 with respect to the base 3 by using the looseness detection label 1 shown in FIGS. 1a and 1b in the system shown in FIG.
  • the reader / writer 5 when the reader / writer 5 is close to the looseness detection label 1 and the looseness detection label 1 is detected by the reader / writer 5 (step 1), first, the reader / writer From 5, power is supplied to the looseness detection label 1, and a command to detect the continuity state of the looseness detection wiring 13 and transmit the detection result is transmitted to the looseness detection label 1 (step 2). ).
  • the attachment region 10a on which the antenna 13 is formed is not directly attached to the bolt 2 or the base 3, but is wound around the side surface of the spacer 20, and the spacer 20 is used. It is attached to the upper surface of the head portion 2a of the bolt 2. Therefore, even when the looseness detection label 1 is attached to the bolt 2 made of metal, the reader / writer 5 can perform non-contact communication with the looseness detection label 1 without being greatly affected by the metal. ..
  • step 3 When the power supplied from the reader / writer 5 is obtained by the loosening detection label 1 and the command transmitted from the reader / writer 5 is received by the IC chip 11 via the antenna 12 of the loosening detection label 1 (step 3). ), A current is supplied to the looseness detection wiring 13 by the electric power supplied from the reader / writer 5.
  • the resistance value of the looseness detection wiring 13 is detected by using the supplied current, so that the continuity state of the looseness detection wiring 13 is detected (step 4).
  • the looseness detection label 1 is attached to the bolt 2 and the bolt 2 is not loosened as shown in FIGS. 3a and 3b
  • the looseness detection wiring 13 is in a conductive state, so that the IC chip In No. 11, the resistance value of the looseness detection wiring 13 itself is detected.
  • the detected resistance value is the resistance value of the looseness detection wiring 13 itself
  • the determination result is converted into digital information as the detection result of the continuity state of the loosening detection wiring 13, and is transmitted non-contactly to the reader / writer 5 via the antenna 12 (step 5).
  • the resistance value detected by the IC chip 11 becomes almost infinite as described later. Therefore, in the IC chip 11, as the resistance value for determining that the looseness detection wiring 13 is in a conductive state, not the resistance value of the looseness detection wiring 13 itself but a value equal to or less than a certain threshold value may be used.
  • the looseness detection label 1 is attached to the bolt 2, and the bolt 2 is loosened as shown in FIGS. 4a and 4b, so that the looseness detection label 1 is broken as shown in FIG. 5 for looseness detection.
  • the looseness detection wiring 13 is in a non-conducting state. In that state, even if a current is supplied to the looseness detection wiring 13 by the electric power supplied from the reader / writer 5, the looseness detection wiring 13 is in a non-conducting state, so that the looseness detection wiring 13 has a current. Does not flow. Therefore, the resistance value detected by the IC chip 11 becomes almost infinite.
  • the resistance value detected by the IC chip 11 becomes almost infinite. Therefore, in the IC chip 11, the resistance value for determining that the looseness detection wiring 13 is in a non-conducting state is not almost infinite, but is greater than a certain threshold value larger than the resistance value of the looseness detection wiring 13 itself. May be used.
  • the detection result transmitted non-contactly from the looseness detection label 1 to the reader / writer 5 as described above is received by the reader / writer 5 (step 6)
  • the detection result received by the reader / writer 5 is the management personal computer. Transferred to 6 (step 7).
  • the looseness detection label 1 is non-contactly transmitted to the reader / writer 5 in the management personal computer 6, and the management personal computer 6 Based on the detection result transferred to, it is determined whether or not the bolt 2 is loose (step 9). Specifically, in the detection result transferred from the reader / writer 5 to the management personal computer 6, if the looseness detection wiring 13 is in a conductive state, it is determined that the bolt 2 is not loosened, and the looseness detection wiring. When 13 is in a non-conducting state, it is determined that the bolt 2 is loose.
  • the looseness detection label 1 configured in this way can be used for detecting looseness of bolts fixing the bogie, for example, in a bogie of a railroad vehicle.
  • the spacer 20 is made of a soft material such as foamable acrylic resin, looseness detection is detected even if the looseness detection label 1 is blown by the wind or falls off due to vibration while the railroad vehicle is running. The damage caused by the label 1 hitting the human body or the like can be reduced.
  • the sticking region 10a of the film substrate 10 constituting the loosening detection label 1 has a band shape and the antenna 12 is formed extending along the longitudinal direction of the sticking region 10a will be described. ..
  • the communication distance was measured using a BHT series manufactured by Denso Wave Co., Ltd. as a reader / writer with an output of 0.1 W.
  • the communication distance was 10 cm when the looseness detection wiring 13 was not broken, and the communication distance was 5 cm when the looseness detection wiring 13 was broken.
  • the loosening detection label 1 shown in FIGS. 1a and 1b is wound around the side surface of the spacer 20 and the spacer 20 is the head portion 2a of the bolt 2.
  • the communication distance when the sticking area 10a was stuck along the side surface of the head portion 2a of the bolt 2 was measured. Then, the communication distance was 17 cm when the looseness detection wiring 13 was not broken, and the communication distance was 8 cm when the looseness detection wiring 13 was broken.
  • the length of the communication antenna is increased.
  • the antenna 12 is formed in a region facing the upper surface of the head portion 2a of the bolt 2, even if the antenna is formed in the region having the maximum diameter of the head portion 2a of the bolt 2, the length thereof is the head of the bolt 2. It can only be lengthened up to the maximum diameter of part 2a.
  • the looseness detection label 1 of the present embodiment is wound around the side surface of the spacer 20 and is attached to the upper surface of the head portion 2a of the bolt 2 so as to follow the side surface of the head portion 2a of the bolt 2. It has a band-shaped sticking area 10a stuck to. Therefore, if the antenna 12 is formed so as to extend along the longitudinal direction of the strip, the length of the antenna 12 can exceed the maximum diameter of the head portion 2a of the bolt 2. As a result, the communication distance can be increased as described above.
  • the spacer 20 when the spacer 20 is attached to the upper surface of the head portion 2a of the bolt 2, it is attached to the side surface of the spacer 20.
  • the antenna 12 By forming the antenna 12 in the attachment region 10a to be attached, the antenna 12 and the bolt 2 are electrically coupled to each other, and there is a possibility that the communication distance is further improved.
  • the width of the antenna 12 is preferably about 10 mm to 40 mm, more preferably about 30 mm to 40 mm.
  • the antenna 12 for non-contact transmission of the conduction state of the looseness detection wiring 13 is formed so as to extend in the longitudinal direction of the band-shaped attachment region 10a. Therefore, when the looseness detection label 1 is attached across the bolt 2 and the base 3, the antenna 12 has a shape along the side surface of the head portion 2a of the bolt 2. As a result, even when the bolt 2 is small, the length of the antenna 12 can be increased, and it becomes easy to obtain a sufficient communication distance. Further, the non-metal spacer 20 is attached to the attachment area 10b to be attached to the head portion 2a of the bolt 2, and the antenna 20 is arranged along the side surface of the spacer 20 to make the bolt 2 conductive. Even if it is made of a material, it is possible to avoid shortening the communication distance.
  • FIG. 8a is a top view showing a second embodiment of the looseness detection label of the present disclosure.
  • FIG. 8b is a side view seen from the direction A shown in FIG. 8a.
  • this embodiment is a looseness detection label 101 which is different from the looseness detection label 1 shown in FIGS. 1a and 1b in that it does not have the spacer 20 and the adhesive layer 30b.
  • FIG. 9a is a top view showing an example of a state in which the looseness detection label 101 shown in FIGS. 8a and 8b is attached to an adherend having the same shape as the adherend shown in FIGS. 2a and 2b. ..
  • FIG. 9b is a side view seen from the direction A shown in FIG. 9a.
  • the looseness detection label 101 shown in FIGS. 8a and 8b does not have the spacer 20 of the looseness detection label 1 shown in FIGS. 1a and 1b. Therefore, as the adherend to be attached, as shown in FIGS. 9a and 9b, it is conceivable that a non-metal bolt 102 is used instead of the metal bolt 2 shown in FIGS. 2a and 2b. Be done.
  • the looseness detection label 101 shown in FIGS. 8a and 8b is used to detect looseness of the bolt 102 in such an adherend, as shown in FIGS. 9a and 9b, the attachment region of the film substrate 110 is attached.
  • the 110b is attached to the upper surface of the head portion 102a of the bolt 102 by the adhesive layer 30a, and the attachment region 110a of the film substrate 110 is wound around the side surface of the head portion 102a of the bolt 102 and attached by the adhesive layer 30a. Further, the sticking area 110c of the film substrate 110 is stuck to the side surface of the head portion 102a of the bolt 102 by the adhesive layer 30a, and the sticking area 110d of the film substrate 110 is stuck to the surface of the base 3 by the adhesive layer 30a. To wear. At that time, each of the five regions divided by the folded portions 16a to 16d of the attachment region 110a corresponds to each of the five side surfaces of the regular hexagonal side surface of the head portion 102a of the bolt 102.
  • the sticking area 110a overlaps the sticking area 110c. It has become something that does not become.
  • the attachment region 110a of the film substrate 110 is wound around the side surface of the head portion 102a of the bolt 102 and attached, so that the attachment region 110a of the film substrate 110 is attached to the side surface of the head portion 102a of the bolt 102. It will be in a state of being pasted along the line.
  • the looseness detection wiring 13 is formed in a loop shape, so that the looseness detection label 101 is in a conductive state. Then, the looseness detection label 101 is attached across the bolt 102 and the base 3 as described above to form a looseness detection structure for detecting looseness of the bolt 102 with respect to the base 3.
  • FIG. 10a shows when the loosening detection label 101 shown in FIGS. 8a and 8b is loosened in the state where the loosening detection label 101 is attached across the bolt 102 and the base 3 as shown in FIGS. 9a and 9b. It is a top view for demonstrating the action of.
  • FIG. 10b is a side view seen from the direction A shown in FIG. 10a.
  • the bolt 102 is attached to FIG. 10a due to external vibration or the like.
  • the attachment area 110c attached to the side surface of the head portion 2a of the bolt 102 and the base 3. Distortion occurs between the attached region 110d and the attached region 110d.
  • the looseness detection label 101 is broken due to the distortion, and the looseness detection wiring 13 is disconnected accordingly, resulting in a non-conducting state. Then, by detecting the non-conducting state of the looseness detection wiring 13, it is detected that the bolt 102 tightened to the base 3 has loosened.
  • the looseness detection wiring 13 is in a conductive state.
  • the looseness detection wiring 13 is in a non-conducting state. Therefore, by detecting the continuity state of the looseness detection wiring 13, it is possible to detect that the bolt 102 is loose. At that time, by detecting that the bolt 102 is loose, the looseness detection label 101 is broken when the bolt 102 tightened to the base 3 is loosened, so that the base 3 can be loosened. Even if the tightened bolt 102 has a small looseness, the looseness can be detected.
  • FIG. 11a is a top view showing a third embodiment of the looseness detection label of the present disclosure.
  • FIG. 11b is a side view seen from the direction A shown in FIG. 11a.
  • the first region is divided into two attachment regions 210a-1,210a-2 with respect to the looseness detection label 1 shown in FIGS. 1a and 1b.
  • the looseness detection label 201 is different in that it is present.
  • the two attachment regions 210a-1,210a-2 each have a strip shape and are connected to the attachment region 10b via the folded portions 215a-1,215a-2.
  • Antennas 212-1,212-2 extending in the longitudinal direction are formed in the attachment regions 210a-1,210a-2, respectively. These antennas 212-1,122-2 are connected to each other via a loop portion 14.
  • the attachment regions 210a-1,210a-2 are provided with folded portions 16a to 16d in the same manner as those shown in FIGS. 1a and 1b.
  • the looseness detection label 201 configured as described above is also used for detecting looseness of the bolt 2 by being attached to the adherend shown in FIGS. 2a and 2b in the same manner as those shown in FIGS. 1a and 1b.
  • the spacer 20 is attached by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment areas 210a-1,210a-2 of the film substrate 210 are attached to the side surfaces of the spacer 20, respectively. It is wrapped and attached by the adhesive layer 30a.
  • the attachment region 10c of the film substrate 210 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 210 is attached to the base 3 It will be attached to the surface of the surface by the adhesive layer 30a.
  • the antennas 212-1,212-2 for non-contact transmission of the conduction state of the looseness detection wiring 13 are provided in the longitudinal direction of the strip-shaped attachment regions 210a-1,210a-2. Each is formed to extend. Therefore, when the looseness detection label 201 is attached across the bolt 2 and the base 3 shown in FIGS. 2a and 2b, the antennas 212-1,122-2 are along the side surface of the head portion 2a of the bolt 2. It will have such a shape. As a result, even when the bolt 2 is small, the length of the antenna 212-1,212-2 can be increased, and it becomes easy to obtain a sufficient communication distance.
  • FIG. 12a is a top view showing a fourth embodiment of the looseness detection label of the present disclosure.
  • FIG. 12b is a side view seen from the direction A shown in FIG. 12a.
  • the first region is divided into two attachment regions 310a-1 and 310a-2 with respect to the looseness detection label 1 shown in FIGS. 1a and 1b.
  • the looseness detection label 301 is different in that it is connected to different sides of the sticking area 310b.
  • the two attachment regions 310a-1 and 310a-2 each have a strip shape, and are connected to different sides of the attachment region 310b via the folded portions 315a-1 and 315a-2.
  • Antennas 312-1, 312-2 extending in the longitudinal direction thereof are formed in the attachment regions 310a-1 and 310a-2, respectively. These antennas 312-1, 312-2 are connected to each other via a loop portion 314.
  • the attachment regions 310a-1 and 310a-2 are provided with folded portions 16a and 16d in regions facing the corners of the side surface of the spacer 20 when the spacer 20 is attached to the side surface.
  • the looseness detection label 301 configured as described above is also used for detecting looseness of the bolt 2 by being attached to the adherend shown in FIGS. 2a and 2b in the same manner as those shown in FIGS. 1a and 1b.
  • the spacer 20 is attached by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment areas 310a-1 and 310a-2 of the film substrate 310 are attached to the side surfaces of the spacer 20, respectively. It is wrapped and attached by the adhesive layer 30a.
  • the attachment region 10c of the film substrate 310 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 310 is attached to the base 3 It will be attached to the surface of the surface by the adhesive layer 30a.
  • the antennas 312-1, 312-2 for non-contact transmission of the conduction state of the looseness detection wiring 13 are provided in the longitudinal direction of the band-shaped attachment regions 310a-1 and 310a-2. Each is formed to extend. Therefore, when the looseness detection label 301 is attached across the bolt 2 and the base 3 shown in FIGS. 2a and 2b, the antennas 312-1, 312-2 are along the side surface of the head portion 2a of the bolt 2. It will have such a shape. As a result, even when the bolt 2 is small, the lengths of the antennas 312-1, 312-2 can be increased, and it becomes easy to obtain a sufficient communication distance.
  • FIG. 13a is a top view showing a fifth embodiment of the looseness detection label of the present disclosure.
  • FIG. 13b is a side view seen from the direction A shown in FIG. 13a.
  • the attachment area 410b is attached to the looseness detection label 1 shown in FIGS. 1a and 1b of the bolt 2 (see FIGS. 2a and 2b). It has a regular hexagonal shape that is the same as the shape of the upper surface, and is different in that it is formed as two antennas 412 in the sticking area 410b in addition to the antenna 12 formed in the sticking area 10a as a communication antenna. Loosening detection label 401.
  • Each of the two antennas 412 formed in the sticking area 410b is formed in an arc shape from the connection point between the loop portion 14 and the antenna 12 along one end side of the sticking area 410b.
  • the looseness detection label 401 is attached to the adherend shown in FIGS. 2a and 2b and used for looseness detection of the bolt 2 in the same manner as those shown in FIGS. 1a and 1b.
  • the sticking area 410b and the spacer 20 are stuck by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the sticking area 10a of the film substrate 410 is wound around the side surface of the spacer 20. It is attached by the adhesive layer 30a.
  • the attachment area 10c of the film substrate 410 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 410 is attached to the base 3 It will be attached to the surface of the surface by the adhesive layer 30a.
  • the looseness detection label 401 of this embodiment is also formed so that the antenna 12 for non-contact transmission of the conduction state of the looseness detection wiring 13 extends in the longitudinal direction of the band-shaped attachment region 10a. Therefore, when the looseness detection label 401 is attached across the bolt 2 and the base 3 shown in FIGS. 2a and 2b, the antenna 12 has a shape along the side surface of the head portion 2a of the bolt 2. It becomes. As a result, even when the bolt 2 is small, the length of the antenna 12 can be increased, and it becomes easy to obtain a sufficient communication distance. Further, in the looseness detection label 401 of the present embodiment, the communication distance can be extended by forming the antenna 412 not only in the sticking area 10a of the film substrate 410 but also in the sticking area 410b.
  • the looseness detection label 401 of this embodiment has a sticking region 410b having a regular hexagonal shape that is the same as the shape of the upper surface of the bolt 2 to be stuck (see FIGS. 2a and 2b).
  • the shape of the landing region 410b is not limited to this, and may be any shape that does not protrude from the upper surface of the bolt 2 to be attached (see FIGS. 2a and 2b).
  • the spacer 20 is attached to the surface of the attachment area 410b opposite to the surface on which the looseness detection wiring 13 is formed, similar to those shown in FIGS. 1a and 1b.
  • the spacer 20 is not provided, as in the case of those shown in FIGS. 8a and 8b.
  • the bolt is attached to a non-metal bolt in the same manner as that shown in FIGS. 8a and 8b.
  • the looseness detection label 401 of the present embodiment has a configuration that does not have the spacer 20 because the attachment region 410b has a regular hexagonal shape that is the same as the shape of the upper surface of the bolt to be attached, as described above.
  • the alignment between the sticking area 410b and the bolt becomes easy.
  • the attachment region 410b does not have a regular hexagonal shape that is the same as the shape of the upper surface of the bolt to be attached, but has a 120 ° corner portion that is one corner of the regular hexagon, it is sufficient. By superimposing the corner portion on one corner portion on the upper surface of the bolt to be attached and attaching the corner portion, the alignment between the attachment area 410b and the bolt becomes easy.
  • the two antennas 412 formed in the attachment region 410b to be attached so as to overlap the upper surface of the head portion 2a of the bolt 2 have been described by taking an arc-shaped antenna as an example.
  • the shape is not limited to the arc shape.
  • the antennas 12, 212-1,122-2, 312-1,312-2 are attached to the attachment regions 10a, 110a, 210a-1,210a-2, 310a-1, 310a. -2 is formed from one end to the other end in the longitudinal direction, and when attached to the bolt 2, it is configured to face two or more side surfaces of the head portion 2a of the bolt 2.
  • the communication antenna formed in the sticking region of the above if it is formed so as to extend in the longitudinal direction of the first sticking region, the head portion 2a of the bolt 2 is 1 when the antenna is stuck to the bolt 2. It may be configured to face only one side surface. In such a configuration, as shown in FIGS.
  • connection point between the loop portion 14 and the antenna 12 is along one end of the sticking area 410b. If the configuration has two antennas 412 formed in an arc shape, it becomes easy to secure a sufficient communication distance.
  • the looseness detection label of the present disclosure is a looseness detection label that detects looseness of a tightening member tightened to a tightening target component via non-contact communication.
  • An adhesive layer is laminated on one surface, and the band-shaped first region to be attached along the side surface of the tightening member and the first region extending in a direction orthogonal to the longitudinal direction of the first region.
  • a second region connected to the first region and adhered so as to face the tightening member from the upper surface to the side surface thereof and the second region connected to the opposite side of the first region.
  • a base base material provided with a third region to be attached to the tightening target part, and A communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
  • Looseness detection wiring formed across the second region and the third region of the base base material, and It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna. It has a detection means for non-contact transmission, The first region has a length that does not overlap the second region when the loosening detection label is attached across the tightening member and the tightening target component.
  • the band-shaped first region of the base base material is attached along the side surface of the tightening member, and the base base material is attached.
  • the two regions are attached so as to face each other from the upper surface to the side surface of the tightening member, and the third region of the base base material is attached to the tightening target component.
  • the looseness detection wiring When the base base material is not distorted, the looseness detection wiring is in a conductive state, but when the base base material is distorted, the base material is broken due to the distortion, and the looseness detection wiring is broken. The wire breaks and becomes non-conducting. Then, the detection means detects the conduction state of the loosening detection wiring, and the detection result is transmitted non-contact via the communication antenna, so that the tightening member tightened to the tightening target component is loosened. Will be detected. At that time, since the communication antenna for non-contact transmission of the conduction state of the looseness detection wiring is formed so as to extend in the longitudinal direction of the band-shaped first region, the communication antenna is formed on the side surface of the tightening member. It will have a shape that conforms to. As a result, it becomes easy to obtain a sufficient communication distance.
  • the tightening member has an outer shape substantially the same as the shape of the upper surface of the tightening member, has a non-conductive member attached to a part of the second region of the base base material by an adhesive layer, and has a length of the first region. If the width in the direction orthogonal to the direction is substantially the same as the thickness of the non-conductive member, even if the tightening member is made of a conductive material, it is possible to avoid shortening the communication distance.
  • a so-called metal-compatible antenna has been put into practical use in order to suppress a decrease in communication distance when attached to a component made of a conductive material.
  • metal-compatible antennas often have a hard structure because the dielectric or metamaterial is composed of a sintered body.
  • the non-conductive member it is possible to avoid shortening the communication distance even if the tightening member is made of a conductive material without using a metal-compatible antenna.
  • the communication antenna may be formed in the second region as well.

Abstract

The present invention comprises: a film substrate 10 that includes a band-shaped adhesion area 10a adhering along the side surface of a bolt, an adhesion area 10b connected to the adhesion area 10a and adhering from the upper surface to the side surface of the bolt, and an adhesion area 10c connected to the adhesion area 10b and adhering to a base; an antenna 12 formed on the adhesion area 10a of the film substrate 10 to extend in the longitudinal direction thereof; a looseness detection wiring 13 formed across the adhesion areas 10b, 10c of the film 10; and an IC chip 11 that detects a conduction state of the looseness detection wiring 13 and transmits the detection result in a contactless manner via the antenna 12, wherein the adhesion area 10a has a length so as not to overlap the adhesion area 10b when a looseness detection label 1 adheres to a region across the bolt and the base.

Description

緩み検知ラベル及び緩み検知構造Looseness detection label and looseness detection structure
　本発明は、締め付け対象部品に締め付けられた締め付け部材の緩みを、非接触通信を介して検知する緩み検知ラベル及び緩み検知構造に関する。 The present invention relates to a looseness detection label and a looseness detection structure that detect looseness of a tightening member tightened to a tightening target component via non-contact communication.
　一般に、鉄道等の車両においては、走行中にボルトが外れた場合に大きな事故に発展する可能性が高い。そのため、従来より、打音検査やチェックマークによる目視検査を熟練作業者が定期的に行うことで、ボルトに緩みが生じていないかを検査している。ところが、このような検査では、作業者の熟練度や人手不足等の人的要因による点検ミスが発生する虞がある。そこで、センサを用いることでボルトの緩みを検査することが考えられる。しかしながらその場合、大掛かりな装置や、専用のボルトや座金、治具等が必要となってしまう。 In general, in vehicles such as railways, there is a high possibility that a major accident will occur if the bolt comes off while driving. Therefore, conventionally, a skilled worker regularly performs a tapping sound inspection and a visual inspection using a check mark to inspect whether the bolt is loose. However, in such an inspection, there is a possibility that an inspection error may occur due to human factors such as the skill level of the worker and the labor shortage. Therefore, it is conceivable to inspect the looseness of the bolt by using a sensor. However, in that case, a large-scale device, special bolts, washers, jigs, etc. are required.
　近年、非接触状態にて情報の書き込みや読み出しを行うことが可能なＩＣチップが搭載された非接触型ＩＣラベルや非接触型ＩＣタグ等のＲＦＩＤ技術を利用した非接触通信媒体がその優れた利便性から急速な普及が進みつつある。そこで、上述したボルトの緩みを検知する場合にも、このようなＲＦＩＤ技術を利用することが考えられている。 In recent years, non-contact communication media using RFID technology such as non-contact IC labels and non-contact IC tags equipped with IC chips capable of writing and reading information in a non-contact state have been excellent. Due to its convenience, it is rapidly becoming widespread. Therefore, it is considered to use such RFID technology even when detecting the looseness of the bolt described above.
　例えば、特許文献１には、ボルトのキャップ部分にＩＣタグを取り付けるとともに、ボルトが締め付けられる部材に固定されたリングに、その一部に開口部を有する金属等からなる導体片を取り付けた技術が開示されている。この技術では、ボルトに緩みが生じていない場合は、ＩＣタグが開口部に対向することでＩＣタグに対する読み取りを可能とし、ボルトに緩みが生じた場合は、ボルトが回転することでＩＣタグが開口部に対向しなくなってＩＣタグに対する読み取りを不可能とする。それにより、ボルトの緩みを検知することができる。この技術を用いることで、大掛かりな装置や、専用のボルトや座金、治具等を必要とすることなく、ボルトの緩みを検知することができるようになる。 For example, Patent Document 1 describes a technique in which an IC tag is attached to a cap portion of a bolt, and a conductor piece made of a metal or the like having an opening is attached to a ring fixed to a member to which the bolt is tightened. It is disclosed. In this technology, if the bolt is not loose, the IC tag faces the opening to enable reading to the IC tag, and if the bolt is loose, the bolt rotates to cause the IC tag to read. It does not face the opening, making it impossible to read the IC tag. Thereby, loosening of the bolt can be detected. By using this technology, loosening of bolts can be detected without the need for large-scale equipment, dedicated bolts, washers, jigs, or the like.
特許第５３２４３２５号公報Japanese Patent No. 5324325
　上述したようなＲＦＩＤ技術を利用したシステムにおいては、通信距離が実用上の重要な要素となる。通信距離を延ばすためには、通信用アンテナの長さを長くすることが考えられる。しかしながら、上述したようにボルトの緩みを検知するためにＲＦＩＤ技術を利用した場合、通信用アンテナの長さがボルトの大きさに依存してしまうことになる。そのため、ボルトが小さなものにおいては、通信距離が短いものとなってしまうという問題点がある。 In a system using RFID technology as described above, communication distance is an important practical factor. In order to extend the communication distance, it is conceivable to increase the length of the communication antenna. However, when RFID technology is used to detect loose bolts as described above, the length of the communication antenna depends on the size of the bolts. Therefore, if the bolt is small, there is a problem that the communication distance is short.
　アンテナパターンを工夫することでアンテナの長さを長くすることも考えられる。しかしながら、ボルトが小さなものにおいては、狭い面積の中でアンテナパターンを工夫するにも限度があり、十分な通信距離を得ることができないという問題点がある。 It is also possible to increase the length of the antenna by devising the antenna pattern. However, if the bolt is small, there is a limit to devising the antenna pattern in a narrow area, and there is a problem that a sufficient communication distance cannot be obtained.
　本発明は、締め付け対象部品に締め付けられた締め付け部材の緩みを非接触通信を介して検知する緩み検知ラベルにおいて、締め付け部材が小さな場合であっても十分な通信距離を得やすい緩み検知ラベル及び緩み検知構造を提供することを目的とする。 The present invention is a looseness detection label that detects looseness of a tightening member tightened to a tightening target component via non-contact communication. The looseness detection label and looseness that make it easy to obtain a sufficient communication distance even when the tightening member is small. The purpose is to provide a detection structure.
　本開示の緩み検知ラベルは、
　締め付け対象部品に締め付けられた締め付け部材の緩みを、非接触通信を介して検知する緩み検知ラベルであって、
　一方の面に接着層が積層され、前記締め付け部材の側面に沿うようにして貼着される帯状の第１の領域と、前記第１の領域の長手方向に直交する方向に延びるように前記第１の領域に連接し、前記締め付け部材の上面から側面に亘ってこれらに対向するように貼着される第２の領域と、前記第２の領域の前記第１の領域とは反対側に連接し、前記締め付け対象部品に貼着される第３の領域とを具備するベース基材と、
　前記ベース基材の前記第１の領域に該第１の領域の長手方向に延びるように形成された通信用アンテナと、
　前記ベース基材の前記第２の領域と前記第３の領域とに跨って形成された緩み検知用配線と、
　前記シート基材の前記第２の領域に前記通信用アンテナ及び緩み検知用配線と接続されて配置され、前記緩み検知用配線の導通状態を検出し、その検出結果を前記通信用アンテナを介して非接触送信する検出手段とを有し、
　前記第１の領域は、当該緩み検知ラベルが前記締め付け部材と前記締め付け対象部品とに跨って貼着された場合に前記第２の領域に重ならない長さを有する。 The looseness detection label of the present disclosure is
A looseness detection label that detects looseness of the tightening member tightened to the part to be tightened via non-contact communication.
An adhesive layer is laminated on one surface, and the band-shaped first region to be attached along the side surface of the tightening member and the first region extending in a direction orthogonal to the longitudinal direction of the first region. A second region connected to the first region and adhered so as to face the tightening member from the upper surface to the side surface thereof and the second region connected to the opposite side of the first region. Then, a base base material provided with a third region to be attached to the tightening target part, and
A communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
Looseness detection wiring formed across the second region and the third region of the base base material, and
It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna. It has a detection means for non-contact transmission,
The first region has a length that does not overlap the second region when the loosening detection label is attached across the tightening member and the tightening target component.
　本開示の緩み検知構造は、締め付け対象部品と、
　前記締め付け対象部品に締め付けられた締め付け部材と、
　前記締め付け部材の上面の形状と略同一の外形を具備し、前記締め付け部材の上面に貼着された非導電性部材と、
　一方の面に接着層が積層され、前記非導電性部材の側面に巻き付けられて前記接着層によって貼着された帯状の第１の領域と、前記第１の領域の長手方向に直交する方向に延びるように前記第１の領域に連接し、前記非導電性部材の上面から側面、さらには前記締め付け部材の側面に亘って前記接着層によって貼着された第２の領域と、前記第２の領域の前記第１の領域とは反対側に連接し、前記締め付け対象部品に前記接着層によって貼着された第３の領域とを具備するベース基材と、
　前記ベース基材の前記第１の領域に該第１の領域の長手方向に延びるように形成された通信用アンテナと、
　前記ベース基材の前記第２の領域と前記第３の領域とに跨って形成された緩み検知用配線と、
　前記シート基材の前記第２の領域に前記通信用アンテナ及び緩み検知用配線と接続されて配置され、前記緩み検知用配線の導通状態を検出し、その検出結果を前記通信用アンテナを介して非接触送信する検出手段とを有し、
　前記第１の領域は、前記非導電性部材の側面に巻き付けられて貼着された状態において、前記非導電性部材及び前記締め付け部材の側面に貼着された前記第２の領域に重ならない長さを有する。 The looseness detection structure of the present disclosure includes parts to be tightened and
The tightening member tightened to the tightening target part and
A non-conductive member having an outer shape substantially the same as the shape of the upper surface of the tightening member and attached to the upper surface of the tightening member.
An adhesive layer is laminated on one surface, and the band-shaped first region wound around the side surface of the non-conductive member and attached by the adhesive layer and the direction orthogonal to the longitudinal direction of the first region. A second region that is connected to the first region so as to extend and is adhered by the adhesive layer from the upper surface to the side surface of the non-conductive member and further to the side surface of the tightening member, and the second region. A base base material which is connected to the side of the region opposite to the first region and includes a third region which is attached to the tightening target component by the adhesive layer.
A communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
Looseness detection wiring formed across the second region and the third region of the base base material, and
It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna. It has a detection means for non-contact transmission,
The first region has a length that does not overlap with the second region attached to the side surface of the non-conductive member and the tightening member in a state of being wound and attached to the side surface of the non-conductive member. Has a conductor.
本開示の緩み検知ラベルの第１の実施の形態を示す上面図である。It is a top view which shows the 1st Embodiment of the looseness detection label of this disclosure. 図１ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 1a. 図１ａ及び図１ｂに示した緩み検知ラベルが貼着される被着体の一例を示す上面図である。It is a top view which shows an example of the adherend to which the looseness detection label shown in FIG. 1a and FIG. 1b is attached. 図２ａに示す矢印Ａ方向から見た側面図である。It is a side view seen from the direction of arrow A shown in FIG. 2a. 図１ａ及び図１ｂに示した緩み検知ラベルが図２ａ及び図２ｂに示した被着体に貼着された状態の一例を示す上面図である。It is a top view which shows an example of the state in which the looseness detection label shown in FIGS. 1a and 1b is attached to the adherend shown in FIGS. 2a and 2b. 図３ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 3a. 図１ａ及び図１ｂに示した緩み検知ラベルが図３ａ及び図３ｂに示したようにボルトと土台とに跨って貼着された状態においてボルトに緩みが生じた際の作用を説明するための上面図である。Top surface for explaining the action when the bolt is loosened when the looseness detection label shown in FIGS. 1a and 1b is attached across the bolt and the base as shown in FIGS. 3a and 3b. It is a figure. 図４ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 4a. 図１ａ及び図１ｂに示した緩み検知ラベルにおいて図４ａ及び図４ｂに示したようにスペーサの側面とボルトのヘッド部の側面とに貼着された貼着領域と土台に貼着された貼着領域との間に歪みが生じた場合の作用を説明するための図である。In the looseness detection label shown in FIGS. 1a and 1b, as shown in FIGS. 4a and 4b, the attachment area attached to the side surface of the spacer and the side surface of the head portion of the bolt and the attachment attached to the base. It is a figure for demonstrating the action when the distortion occurs with a region. 図１ａ及び図１ｂに示した緩み検知ラベルを用いて土台に対するボルトの緩みを検知するためのシステムの一例を示す図である。It is a figure which shows an example of the system for detecting looseness of a bolt with respect to a base using the looseness detection label shown in FIG. 1a and FIG. 1b. 図６に示したシステムにおいて図１ａ及び図１ｂに示した緩み検知ラベルを用いて土台に対するボルトの緩みを検知する方法を説明するためのフローチャートである。It is a flowchart for demonstrating the method of detecting looseness of a bolt with respect to a base by using the looseness detection label shown in FIG. 1a and FIG. 1b in the system shown in FIG. 本開示の緩み検知ラベルの第２の実施の形態を示す上面図である。It is a top view which shows the 2nd Embodiment of the looseness detection label of this disclosure. 図８ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 8a. 図８ａ及び図８ｂに示した緩み検知ラベルが図２ａ及び図２ｂに示した被着体と同一の形状の被着体に貼着された状態の一例を示す上面図である。FIG. 8 is a top view showing an example of a state in which the looseness detection label shown in FIGS. 8a and 8b is attached to an adherend having the same shape as the adherend shown in FIGS. 2a and 2b. 図９ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 9a. 図８ａ及び図８ｂに示した緩み検知ラベルが図９ａ及び図９ｂに示したようにボルトと土台とに跨って貼着された状態においてボルトに緩みが生じた際の作用を説明するための上面図である。Top surface for explaining the action when the bolt is loosened when the looseness detection label shown in FIGS. 8a and 8b is attached across the bolt and the base as shown in FIGS. 9a and 9b. It is a figure. 図１０ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 10a. 本開示の緩み検知ラベルの第３の実施の形態を示す上面図である。It is a top view which shows the 3rd Embodiment of the looseness detection label of this disclosure. 図１１ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 11a. 本開示の緩み検知ラベルの第４の実施の形態を示す上面図である。It is a top view which shows the 4th Embodiment of the looseness detection label of this disclosure. 図１２ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 12a. 本開示の緩み検知ラベルの第５の実施の形態を示す上面図である。It is a top view which shows the 5th Embodiment of the looseness detection label of this disclosure. 図１３ａに示すＡ方向から見た側面図である。It is a side view seen from the A direction shown in FIG. 13a.
　以下に、本開示の実施の形態について図面を参照して説明する。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
　（第１の実施の形態）
　図１ａは、本開示の緩み検知ラベルの第１の実施の形態を示す上面図である。図１ｂは、図１ａに示すＡ方向から見た側面図である。 (First Embodiment)
FIG. 1a is a top view showing a first embodiment of the looseness detection label of the present disclosure. FIG. 1b is a side view seen from the direction A shown in FIG. 1a.
　本形態は図１ａ及び図１ｂに示すように、フィルム基板１０の一方の面にスペーサ２０が貼着されて構成された緩み検知ラベル１である。 As shown in FIGS. 1a and 1b, this embodiment is a looseness detection label 1 having a spacer 20 attached to one surface of the film substrate 10.
　フィルム基板１０は、本開示におけるベース基材となるものである。フィルム基板１０は、例えば、７０μｍの厚さのＰＥＴフィルム等から構成されている。フィルム基板１０は、一方の面の全面に粘着剤が塗布されることで、貼着層となる粘着層３０ａが積層されている。フィルム基板１０は、４つの貼着領域１０ａ～１０ｄがこの順で連接して構成されている。 The film substrate 10 is the base substrate in the present disclosure. The film substrate 10 is made of, for example, a PET film having a thickness of 70 μm or the like. The film substrate 10 is laminated with an adhesive layer 30a to be a sticking layer by applying an adhesive to the entire surface of one surface. The film substrate 10 is configured by connecting four attachment regions 10a to 10d in this order.
　貼着領域１０ａは、本開示における第１の領域となるものである。貼着領域１０ａは、帯状形状を具備し、その長手方向に等間隔に折り部１６ａ～１６ｄが設けられている。貼着領域１０ａの粘着層３０ａが積層された面とは反対側の面には、貼着領域１０ａの長手方向において貼着領域１０ｂとの連接辺側の側辺に沿って延びた通信用のアンテナ１２が形成されている。アンテナ１２は、例えば、３×５０ｍｍの形状とすることが考えられる。 The sticking area 10a is the first area in the present disclosure. The attachment region 10a has a band shape, and folded portions 16a to 16d are provided at equal intervals in the longitudinal direction thereof. The surface of the attachment region 10a on the side opposite to the surface on which the adhesive layer 30a is laminated extends along the side surface of the attachment region 10a on the side of the connection side with the attachment region 10b in the longitudinal direction for communication. The antenna 12 is formed. The antenna 12 may have a shape of, for example, 3 × 50 mm.
　貼着領域１０ｂは、貼着領域１０ａの折り部１６ｂ，１６ｃ間の側辺に、貼着領域１０ａの長手方向と直交するに延びるように折り部１５ａを介して連接している。貼着領域１０ｂの粘着層３０ａが積層された面とは反対側の面には、アンテナ１２に接続されたループ部１４が形成されているとともに、貼着領域１０ｂ～１０ｄに跨って緩み検知用配線１３がループ状となって形成されている。さらに、貼着領域１０ｂのループ部１５及び緩み検知用配線１３が形成された面には、ＩＣチップ１１が搭載されている。貼着領域１０ｂのループ部１５及び緩み検知用配線１３が形成された面とは反対側の面には、スペーサ２０が粘着層３０ａによって貼着されている。 The sticking region 10b is connected to the side side between the folded portions 16b and 16c of the sticking region 10a via the folded portion 15a so as to extend orthogonally to the longitudinal direction of the sticking region 10a. A loop portion 14 connected to the antenna 12 is formed on the surface of the attachment region 10b opposite to the surface on which the adhesive layer 30a is laminated, and for looseness detection over the attachment regions 10b to 10d. The wiring 13 is formed in a loop shape. Further, the IC chip 11 is mounted on the surface of the attachment region 10b where the loop portion 15 and the looseness detection wiring 13 are formed. A spacer 20 is attached by the adhesive layer 30a to the surface of the attachment region 10b opposite to the surface on which the loop portion 15 and the loosening detection wiring 13 are formed.
　ループ部１４は、例えば、６×１０ｍｍの外形を有するループ状の配線から構成されている。ループ配線１４は、アンテナ１２とＩＣチップ１１とに接続されている。 The loop portion 14 is composed of, for example, a loop-shaped wiring having an outer shape of 6 × 10 mm. The loop wiring 14 is connected to the antenna 12 and the IC chip 11.
　緩み検知用配線１３は、一方の端部がＩＣチップ１１に接続されている。緩み検知用配線１３は、ＩＣチップ１１に接続された端部から貼着領域１０ｂ及び貼着領域１０ｃを介して貼着領域１０ｄまで延び、貼着領域１０ｄにて折り返して貼着領域１０ｄ及び貼着領域１０ｃを介して貼着領域１０ｄまで延び、他方の端部がＩＣチップ１１に接続されて形成されている。 One end of the looseness detection wiring 13 is connected to the IC chip 11. The looseness detection wiring 13 extends from the end connected to the IC chip 11 to the attachment area 10d via the attachment area 10b and the attachment area 10c, and is folded back at the attachment area 10d to attach the attachment area 10d and the attachment area 10d. It extends to the attachment region 10d via the attachment region 10c, and the other end is connected to the IC chip 11 to form.
　ＩＣチップ１１は、本開示における検出手段となるものである。ＩＣチップ１１には、２つのアンテナ端子（不図示）と、２つの緩み検知用端子（不図示）とが設けられている。ＩＣチップ１１は、これらアンテナ端子及び緩み検知用端子が設けられた面が搭載面となって、フィルム基板１０のループ部１５及び緩み検知用配線１３が形成された面に搭載されている。ＩＣチップ１１のアンテナ端子はそれぞれ、ループ部１４を介してアンテナ１２に接続されている。ＩＣチップ１１の緩み検知用端子は、緩み検知用配線１３の両端部にそれぞれに接続されている。ＩＣチップ１１は、アンテナ１２を介した非接触通信によって得た電力による電流を緩み検知用配線１３に流すことで緩み検知用配線１３の抵抗値を検出し、その抵抗値に基づいて緩み検知用配線１３の導通状態を検出し、その検出結果をデジタル情報に変換してアンテナ１２を介して非接触送信する。 The IC chip 11 is a detection means in the present disclosure. The IC chip 11 is provided with two antenna terminals (not shown) and two looseness detection terminals (not shown). The IC chip 11 is mounted on the surface of the film substrate 10 on which the loop portion 15 and the looseness detection wiring 13 are formed, with the surface provided with the antenna terminal and the looseness detection terminal serving as a mounting surface. Each of the antenna terminals of the IC chip 11 is connected to the antenna 12 via the loop portion 14. The looseness detection terminals of the IC chip 11 are connected to both ends of the looseness detection wiring 13. The IC chip 11 detects the resistance value of the loosening detection wiring 13 by passing a current due to electric power obtained by non-contact communication via the antenna 12 through the loosening detection wiring 13, and based on the resistance value, the IC chip 11 is used for loosening detection. The conduction state of the wiring 13 is detected, the detection result is converted into digital information, and non-contact transmission is performed via the antenna 12.
　スペーサ２０は、本開示における非導電性部材となるものである。スペーサ２０は、緩み検知ラベル１が貼着される締め付け部材となるボルトの上面の形状と略同一の正六角形の形状を具備するとともに、フィルム基板１０の貼着領域１０ａの長手方向に直交する方向の幅と略同一の厚さを具備する。スペーサ２０は、例えば、発泡性アクリル樹脂等のように柔らかい非金属の材料から構成されている。スペーサ２０は、その一辺が折り部１５ａに重なり、それに対向する辺が貼着領域１０ｂの貼着領域１０ｃとの連接辺に重なるように貼着領域１０ｂに粘着層３０ａによって貼着されている。スペーサ２０の貼着領域１０ｂとの貼着面とは反対側の面には、その全面に粘着剤が塗布されることで粘着層３０ｂが積層されている。 The spacer 20 is a non-conductive member in the present disclosure. The spacer 20 has a regular hexagonal shape that is substantially the same as the shape of the upper surface of the bolt that is the tightening member to which the looseness detection label 1 is attached, and is orthogonal to the longitudinal direction of the attachment region 10a of the film substrate 10. It has approximately the same thickness as the width of. The spacer 20 is made of a soft non-metal material such as, for example, a foamable acrylic resin. The spacer 20 is attached to the attachment region 10b by the adhesive layer 30a so that one side thereof overlaps the folded portion 15a and the side facing the spacer 20 overlaps the connection side of the attachment region 10b with the attachment region 10c. An adhesive layer 30b is laminated on the surface of the spacer 20 opposite to the attachment surface with the attachment region 10b by applying an adhesive to the entire surface thereof.
　貼着領域１０ｃは、貼着領域１０ｂの折り部１５ａと対向する辺に、貼着領域１０ａとは反対方向に延びるように折り部１５ｂを介して連接している。これら貼着領域１０ｂと貼着領域１０ｃとから、本開示における第２の領域が構成されている。 The sticking region 10c is connected to the side of the sticking region 10b facing the folded portion 15a via the folded portion 15b so as to extend in the direction opposite to the sticking region 10a. A second region in the present disclosure is composed of the sticking region 10b and the sticking region 10c.
　貼着領域１０ｄは、本開示における第３の領域となるものである。貼着領域１０ｄは、貼着領域１０ｃの折り部１５ｂと対向する辺に、貼着領域１０ｂとは反対方向に延びるように折り部１５ｃを介して連接している。 The sticking area 10d is the third area in the present disclosure. The sticking region 10d is connected to the side of the sticking region 10c facing the folded portion 15b via the folded portion 15c so as to extend in the direction opposite to the sticking region 10b.
　なお、折り部１５ａ～１５ｃ，１６ａ～１６ｄとして、フィルム基板１０を折り曲げやすいようにミシン目や筋押し等を形成してもよい。 The folded portions 15a to 15c and 16a to 16d may be provided with perforations, streaks, or the like so that the film substrate 10 can be easily bent.
　以下に、上記のように構成された緩み検知ラベル１の利用方法及びその際の作用について説明する。 The usage of the looseness detection label 1 configured as described above and the action at that time will be described below.
　図２ａは、図１ａ及び図１ｂに示した緩み検知ラベル１が貼着される被着体の一例を示す上面図である。図２ｂは、図２ａに示す矢印Ａ方向から見た側面図である。 FIG. 2a is a top view showing an example of an adherend to which the looseness detection label 1 shown in FIGS. 1a and 1b is attached. FIG. 2b is a side view seen from the direction of arrow A shown in FIG. 2a.
　図１ａ及び図１ｂに示した緩み検知ラベル１は、例えば、図２ａ及び図２ｂに示すように、締め付け対象部品となる金属製の土台３と、この土台３に締め付けられる締め付け部材となる金属製のボルト２とからなる被着体に貼着されて使用される。この被着体は、正六角形からなるヘッド部２ａとヘッド部２ａの一方の面から伸びたねじ部２ｂとから構成されるボルト２が、土台３に形成されたねじ孔３ａにねじ部２ｂがねじ込まれることで、ボルト２が土台３に締め付けられることになる。その際、外部から加わる振動等によってボルト２が緩む可能性があり、その緩みを検知するために図１ａ及び図１ｂに示した緩み検知ラベル１が利用されることになる。 The looseness detection label 1 shown in FIGS. 1a and 1b is made of, for example, as shown in FIGS. 2a and 2b, a metal base 3 to be tightened and a metal base 3 to be tightened to the base 3. It is used by being attached to an adherend composed of the bolt 2. In this adherend, a bolt 2 composed of a regular hexagonal head portion 2a and a screw portion 2b extending from one surface of the head portion 2a is provided, and a screw portion 2b is provided in a screw hole 3a formed in the base 3. By being screwed in, the bolt 2 is tightened to the base 3. At that time, the bolt 2 may loosen due to vibration or the like applied from the outside, and the looseness detection label 1 shown in FIGS. 1a and 1b is used to detect the loosening.
　図３ａは、図１ａ及び図１ｂに示した緩み検知ラベル１が図２ａ及び図２ｂに示した被着体に貼着された状態の一例を示す上面図である。図３ｂは、図３ａに示すＡ方向から見た側面図である。 FIG. 3a is a top view showing an example of a state in which the looseness detection label 1 shown in FIGS. 1a and 1b is attached to the adherend shown in FIGS. 2a and 2b. FIG. 3b is a side view seen from the direction A shown in FIG. 3a.
　図１ａ及び図１ｂに示した緩み検知ラベル１を図２ａ及び図２ｂに示した被着体に貼着してボルト２の緩み検知に利用する場合は、図３ａ及び図３ｂに示すように、スペーサ２０をボルト２のヘッド部２ａの上面と重なるようにして粘着層３０ｂによって貼着するとともに、フィルム基板１０の貼着領域１０ａをスペーサ２０の側面に巻き付けて粘着層３０ａによって貼着する。さらに、フィルム基板１０の貼着領域１０ｃを、スペーサ２０の側面とボルト２のヘッド部２ａの側面とに亘って粘着層３０ａによって貼着するとともに、フィルム基板１０の貼着領域１０ｄを、土台３の表面に粘着層３０ａによって貼着する。その際、貼着領域１０ａの折り部１６ａ～１６ｄによって分割される５つの領域のそれぞれが、ボルト２のヘッド部２ａの正六角形の側面のうち５つの側面のそれぞれに対応するものであるため、貼着領域１０ａの長手方向の長さが、緩み検知ラベル１が上記のようにボルト２と土台３とに跨って貼着された場合に、貼着領域１０ａが貼着領域１０ｃに重ならないものとなっている。このように、フィルム基板１０の貼着領域１０ａをスペーサ２０の側面に巻き付けて貼着することで、貼着領域１０ａがスペーサ２０の側面に沿って貼着された状態となる。この際、スペーサ２０をボルト２のヘッド部２ａの上面と重なるようにして貼着するとともに、フィルム基板１０の貼着領域１０ａをスペーサ２０の側面に巻き付けて貼着することで、フィルム基板１０の貼着領域１０ａは、ボルト２のヘッド部２ａの側面に沿うように貼着された状態となる。また、貼着領域１０ｂが貼着されたスペーサ２０をボルト２のヘッド部２ａの上面に貼着することで、貼着領域１０ｂがボルト２のヘッド部２ａの上面に対向するとともに、貼着領域１０ｃがボルト２のヘッド部２ａの側面に対向する。これにより、第２の領域となる貼着領域１０ｂ，１０ｃは、ボルト２のヘッド部２ａの上面から側面に亘って対向するように貼着された状態となる。なお、本形態においては、スペーサ２０として、ボルト２のヘッド部２ａの上面の形状と略同一の正六角形の形状を具備するものを例に挙げて説明したが、ボルト２のヘッド部２ａの上面よりも大きなサイズや小さなサイズのものであってもよい。 When the looseness detection label 1 shown in FIGS. 1a and 1b is attached to the adherend shown in FIGS. 2a and 2b and used for detecting looseness of the bolt 2, as shown in FIGS. 3a and 3b, The spacer 20 is attached by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment area 10a of the film substrate 10 is wound around the side surface of the spacer 20 and attached by the adhesive layer 30a. Further, the attachment region 10c of the film substrate 10 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 10 is attached to the base 3 It is attached to the surface of the surface with the adhesive layer 30a. At that time, since each of the five regions divided by the folded portions 16a to 16d of the sticking region 10a corresponds to each of the five side surfaces of the regular hexagonal side surface of the head portion 2a of the bolt 2. The length of the sticking area 10a in the longitudinal direction is such that when the looseness detection label 1 is stuck across the bolt 2 and the base 3 as described above, the sticking area 10a does not overlap with the sticking area 10c. It has become. By winding the sticking region 10a of the film substrate 10 around the side surface of the spacer 20 and sticking the film substrate 10 in this way, the sticking region 10a is stuck along the side surface of the spacer 20. At this time, the spacer 20 is attached so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment area 10a of the film substrate 10 is wound around the side surface of the spacer 20 and attached to the film substrate 10. The sticking area 10a is in a state of being stuck along the side surface of the head portion 2a of the bolt 2. Further, by attaching the spacer 20 to which the attachment region 10b is attached to the upper surface of the head portion 2a of the bolt 2, the attachment region 10b faces the upper surface of the head portion 2a of the bolt 2 and the attachment region is attached. 10c faces the side surface of the head portion 2a of the bolt 2. As a result, the attachment regions 10b and 10c, which are the second regions, are attached so as to face each other from the upper surface to the side surface of the head portion 2a of the bolt 2. In this embodiment, the spacer 20 having a regular hexagonal shape substantially the same as the shape of the upper surface of the head portion 2a of the bolt 2 has been described as an example, but the upper surface of the head portion 2a of the bolt 2 has been described as an example. It may be larger or smaller in size.
　このようにしてボルト２と土台３とに跨って貼着された緩み検知ラベル１においては、緩み検知用配線１３が、ループ状に形成されていることで導通状態となっている。そして、緩み検知ラベル１が上記のようにしてボルト２と土台３とに跨って貼着されることで、土台３に対するボルト２の緩みを検知する緩み検知構造が構成されることになる。 In the looseness detection label 1 attached across the bolt 2 and the base 3 in this way, the looseness detection wiring 13 is formed in a loop shape to be in a conductive state. Then, the looseness detection label 1 is attached across the bolt 2 and the base 3 as described above, whereby a looseness detection structure for detecting the looseness of the bolt 2 with respect to the base 3 is formed.
　図４ａは、図１ａ及び図１ｂに示した緩み検知ラベル１が図３ａ及び図３ｂに示したようにボルト２と土台３とに跨って貼着された状態においてボルト２に緩みが生じた際の作用を説明するための上面図である。図４ｂは、図４ａに示すＡ方向から見た側面図である。 FIG. 4a shows when the loosening detection label 1 shown in FIGS. 1a and 1b is loosened in the state where the loosening detection label 1 is attached across the bolt 2 and the base 3 as shown in FIGS. 3a and 3b. It is a top view for demonstrating the action of. FIG. 4b is a side view seen from the direction A shown in FIG. 4a.
　図１ａ及び図１ｂに示した緩み検知ラベル１が図３ａ及び図３ｂに示すようにボルト２と土台３とに跨って貼着された状態において、外部から加わる振動等によってボルト２が図４ａに示すように反時計回りに回転して土台３に対して緩みが生じると、図４ｂに示すように、スペーサ２０の側面とボルト２のヘッド部２ａの側面とに貼着された貼着領域１０ｃと、土台３に貼着された貼着領域１０ｄとの間に歪みが生じる。 In a state where the looseness detection label 1 shown in FIGS. 1a and 1b is attached across the bolt 2 and the base 3 as shown in FIGS. 3a and 3b, the bolt 2 is attached to FIG. 4a due to vibration or the like applied from the outside. When the base 3 is loosened by rotating counterclockwise as shown, the sticking region 10c stuck to the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2 as shown in FIG. 4b. Distortion occurs between the and the attachment region 10d attached to the base 3.
　図５は、図１ａ及び図１ｂに示した緩み検知ラベル１において図４ａ及び図４ｂに示したようにスペーサ２０の側面とボルト２のヘッド部２ａの側面とに貼着された貼着領域１０ｃと土台３に貼着された貼着領域１０ｄとの間に歪みが生じた場合の作用を説明するための図である。 FIG. 5 shows a sticking region 10c attached to the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2 as shown in FIGS. 4a and 4b in the looseness detection label 1 shown in FIGS. 1a and 1b. It is a figure for demonstrating the action when the distortion occurs between the sticking area 10d stuck to the base 3.
　上述したように、スペーサ２０の側面とボルト２のヘッド部２ａの側面とに貼着された貼着領域１０ｃと土台３に貼着された貼着領域１０ｄとの間に歪みが生じた場合、図５に示すように、その歪みによって緩み検知ラベル１が破断し、それに伴って緩み検知用配線１３が断線して非導通状態となる。そして、この緩み検知用配線１３の非導通状態を検出することで、土台３に締め付けられたボルト２に緩みが生じた旨が検知されることになる。 As described above, when distortion occurs between the attachment area 10c attached to the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2 and the attachment area 10d attached to the base 3. As shown in FIG. 5, the looseness detection label 1 is broken due to the distortion, and the looseness detection wiring 13 is disconnected accordingly, resulting in a non-conducting state. Then, by detecting the non-conducting state of the looseness detection wiring 13, it is detected that the bolt 2 tightened to the base 3 has loosened.
　このように、土台３に締め付けられたボルト２に緩みが生じていない場合は、緩み検知用配線１３が導通状態となっており、一方、土台３に締め付けられたボルト２に緩みが生じた場合は、緩み検知用配線１３が非導通状態となる。そのため、緩み検知用配線１３の導通状態を検出することで、ボルト２に緩みが発生していることを検知することができる。その際、土台３に締め付けられたボルト２に緩みが生じた場合に緩み検知ラベル１が破断することを利用して、ボルト２に緩みが発生していることを検知することにより、土台３に締め付けられたボルト２の緩みが小さな場合であってもその緩みを検知することができる。 In this way, when the bolt 2 tightened to the base 3 is not loosened, the looseness detection wiring 13 is in a conductive state, while the bolt 2 tightened to the base 3 is loosened. The looseness detection wiring 13 is in a non-conducting state. Therefore, by detecting the continuity state of the looseness detection wiring 13, it is possible to detect that the bolt 2 is loose. At that time, by detecting that the bolt 2 is loose, the looseness detection label 1 is broken when the bolt 2 tightened to the base 3 is loosened, so that the base 3 can be loosened. Even if the tightened bolt 2 is loose, the looseness can be detected.
　以下に、上述した作用を利用して土台３に対するボルト２の緩みを検知する具体的な方法について説明する。 The specific method for detecting the looseness of the bolt 2 with respect to the base 3 by utilizing the above-mentioned action will be described below.
　図６は、図１ａ及び図１ｂに示した緩み検知ラベル１を用いて土台３に対するボルト２の緩みを検知するためのシステムの一例を示す図である。 FIG. 6 is a diagram showing an example of a system for detecting looseness of the bolt 2 with respect to the base 3 by using the looseness detection label 1 shown in FIGS. 1a and 1b.
　図１ａ及び図１ｂに示した緩み検知ラベル１を用いて土台３に対するボルト２の緩みを検知するためのシステムとしては、図６に示すように、緩み検知ラベル１に対して非接触通信が可能な読取手段となるリーダライタ５と、リーダライタ５と有線または無線を介して接続された処理手段となる管理用パソコン６とを有するシステムが考えられる。なお、読取手段のみならず処理手段が内蔵されたハンディターミナルをリーダライタとして用いることも考えられ、その場合、管理用パソコンが不要となる。 As a system for detecting looseness of the bolt 2 with respect to the base 3 using the looseness detection label 1 shown in FIGS. 1a and 1b, non-contact communication with the looseness detection label 1 is possible as shown in FIG. A system having a reader / writer 5 as a reading means and a management personal computer 6 as a processing means connected to the reader / writer 5 via a wire or wireless can be considered. It is also conceivable to use a handy terminal having a built-in processing means as well as a reading means as a reader / writer, in which case a management personal computer becomes unnecessary.
　図７は、図６に示したシステムにおいて図１ａ及び図１ｂに示した緩み検知ラベル１を用いて土台３に対するボルト２の緩みを検知する方法を説明するためのフローチャートである。 FIG. 7 is a flowchart for explaining a method of detecting looseness of the bolt 2 with respect to the base 3 by using the looseness detection label 1 shown in FIGS. 1a and 1b in the system shown in FIG.
　図１ａ及び図１ｂに示した緩み検知ラベル１においては、リーダライタ５が緩み検知ラベル１に近接され、リーダライタ５にて緩み検知ラベル１が検出されると（ステップ１）、まず、リーダライタ５から、緩み検知ラベル１に電力が供給されるとともに、緩み検知用配線１３の導通状態の検出及びその検出結果の送信をする旨の命令が緩み検知ラベル１に対して送信される（ステップ２）。この際、緩み検知ラベル１においては、アンテナ１３が形成された貼着領域１０ａが、ボルト２や土台３に直接貼着されているのではなく、スペーサ２０の側面に巻き付けられ、このスペーサ２０がボルト２のヘッド部２ａの上面に貼着されている。そのため、緩み検知ラベル１が金属からなるボルト２に貼着された場合でも、金属による影響を大きく受けることなくリーダライタ５にて緩み検知ラベル１との間にて非接触通信を行うことができる。 In the looseness detection label 1 shown in FIGS. 1a and 1b, when the reader / writer 5 is close to the looseness detection label 1 and the looseness detection label 1 is detected by the reader / writer 5 (step 1), first, the reader / writer From 5, power is supplied to the looseness detection label 1, and a command to detect the continuity state of the looseness detection wiring 13 and transmit the detection result is transmitted to the looseness detection label 1 (step 2). ). At this time, in the looseness detection label 1, the attachment region 10a on which the antenna 13 is formed is not directly attached to the bolt 2 or the base 3, but is wound around the side surface of the spacer 20, and the spacer 20 is used. It is attached to the upper surface of the head portion 2a of the bolt 2. Therefore, even when the looseness detection label 1 is attached to the bolt 2 made of metal, the reader / writer 5 can perform non-contact communication with the looseness detection label 1 without being greatly affected by the metal. ..
　リーダライタ５から供給された電力が緩み検知ラベル１にて得られるとともに、リーダライタ５から送信された命令が緩み検知ラベル１のアンテナ１２を介してＩＣチップ１１にて受信されると（ステップ３）、リーダライタ５から供給された電力によって緩み検知用配線１３に電流が供給される。 When the power supplied from the reader / writer 5 is obtained by the loosening detection label 1 and the command transmitted from the reader / writer 5 is received by the IC chip 11 via the antenna 12 of the loosening detection label 1 (step 3). ), A current is supplied to the looseness detection wiring 13 by the electric power supplied from the reader / writer 5.
　ＩＣチップ１１においては、供給された電流を用いて緩み検知用配線１３の抵抗値が検出されることで、緩み検知用配線１３の導通状態が検出されることになる（ステップ４）。ここで、緩み検知ラベル１がボルト２に貼着され、図３ａ及び図３ｂに示したようにボルト２が緩んでいない場合は、緩み検知用配線１３が導通状態となっているため、ＩＣチップ１１においては緩み検知用配線１３自体の抵抗値が検出されることになる。 In the IC chip 11, the resistance value of the looseness detection wiring 13 is detected by using the supplied current, so that the continuity state of the looseness detection wiring 13 is detected (step 4). Here, when the looseness detection label 1 is attached to the bolt 2 and the bolt 2 is not loosened as shown in FIGS. 3a and 3b, the looseness detection wiring 13 is in a conductive state, so that the IC chip In No. 11, the resistance value of the looseness detection wiring 13 itself is detected.
　ＩＣチップ１１においては、検出された抵抗値が緩み検知用配線１３自体の抵抗値である場合は、緩み検知用配線１３が導通状態にあると判断される。そして、その判断結果が緩み検知用配線１３の導通状態の検出結果としてデジタル情報に変換されてアンテナ１２を介してリーダライタ５に非接触送信される（ステップ５）。なお、緩み検知用配線１３が非導通状態となっている場合にＩＣチップ１１にて検出される抵抗値は、後述するようにほぼ無限大となる。そのため、ＩＣチップ１１において、緩み検知用配線１３が導通状態にあると判断するための抵抗値として、緩み検知用配線１３自体の抵抗値ではなく、一定の閾値以下のものを用いてもよい。 In the IC chip 11, when the detected resistance value is the resistance value of the looseness detection wiring 13 itself, it is determined that the looseness detection wiring 13 is in a conductive state. Then, the determination result is converted into digital information as the detection result of the continuity state of the loosening detection wiring 13, and is transmitted non-contactly to the reader / writer 5 via the antenna 12 (step 5). When the looseness detection wiring 13 is in a non-conducting state, the resistance value detected by the IC chip 11 becomes almost infinite as described later. Therefore, in the IC chip 11, as the resistance value for determining that the looseness detection wiring 13 is in a conductive state, not the resistance value of the looseness detection wiring 13 itself but a value equal to or less than a certain threshold value may be used.
　一方、緩み検知ラベル１がボルト２に貼着され、図４ａ及び図４ｂに示したようにボルト２に緩みが生じることにより図５に示したように緩み検知ラベル１が破断して緩み検知用配線１３が断線している場合は、緩み検知用配線１３が非導通状態となっている。その状態においては、リーダライタ５から供給された電力によって緩み検知用配線１３に電流が供給されても、緩み検知用配線１３が非導通状態となっていることから緩み検知用配線１３には電流が流れない。そのため、ＩＣチップ１１において検出される抵抗値は、ほぼ無限大となる。 On the other hand, the looseness detection label 1 is attached to the bolt 2, and the bolt 2 is loosened as shown in FIGS. 4a and 4b, so that the looseness detection label 1 is broken as shown in FIG. 5 for looseness detection. When the wiring 13 is broken, the looseness detection wiring 13 is in a non-conducting state. In that state, even if a current is supplied to the looseness detection wiring 13 by the electric power supplied from the reader / writer 5, the looseness detection wiring 13 is in a non-conducting state, so that the looseness detection wiring 13 has a current. Does not flow. Therefore, the resistance value detected by the IC chip 11 becomes almost infinite.
　ＩＣチップ１１においては、検出された抵抗値がほぼ無限大である場合は、緩み検知用配線１３が非導通状態になっていると判断される。そして、その判断結果が緩み検知用配線１３の導通状態の検出結果としてデジタル情報に変換されてアンテナ１２を介してリーダライタ５に非接触送信される。なお、緩み検知用配線１３が非導通状態である場合にＩＣチップ１１にて検出される抵抗値はほぼ無限大となる。そのため、ＩＣチップ１１において、緩み検知用配線１３が非導通状態であると判断するための抵抗値としてほぼ無限大ではなく、緩み検知用配線１３自体の抵抗値よりも大きな一定の閾値以上のものを用いてもよい。 In the IC chip 11, when the detected resistance value is almost infinite, it is determined that the looseness detection wiring 13 is in a non-conducting state. Then, the determination result is converted into digital information as the detection result of the continuity state of the loosening detection wiring 13, and is transmitted non-contactly to the reader / writer 5 via the antenna 12. When the looseness detection wiring 13 is in a non-conducting state, the resistance value detected by the IC chip 11 becomes almost infinite. Therefore, in the IC chip 11, the resistance value for determining that the looseness detection wiring 13 is in a non-conducting state is not almost infinite, but is greater than a certain threshold value larger than the resistance value of the looseness detection wiring 13 itself. May be used.
　このように、リーダライタ５においては、緩み検知ラベル１にて検出された緩み検知用配線１３の導通状態を、アンテナ１２を介して非接触送信させることになる。 In this way, in the reader / writer 5, the conduction state of the looseness detection wiring 13 detected by the looseness detection label 1 is transmitted non-contactly via the antenna 12.
　上記のようにして緩み検知ラベル１からリーダライタ５に非接触送信された検出結果がリーダライタ５にて受信されると（ステップ６）、リーダライタ５にて受信された検出結果は管理用パソコン６に転送される（ステップ７）。 When the detection result transmitted non-contactly from the looseness detection label 1 to the reader / writer 5 as described above is received by the reader / writer 5 (step 6), the detection result received by the reader / writer 5 is the management personal computer. Transferred to 6 (step 7).
　リーダライタ５から転送されてきた検出結果が管理用パソコン６にて受信されると（ステップ８）、管理用パソコン６において、緩み検知ラベル１からリーダライタ５に非接触送信され、管理用パソコン６に転送されてきた検出結果に基づいて、ボルト２に緩みが生じているかが判断されることになる（ステップ９）。具体的には、リーダライタ５から管理用パソコン６に転送されてきた検出結果において、緩み検知用配線１３が導通状態である場合はボルト２に緩みが生じていないと判断され、緩み検知用配線１３が非導通状態である場合はボルト２に緩みが生じていると判断されることになる。 When the detection result transferred from the reader / writer 5 is received by the management personal computer 6 (step 8), the looseness detection label 1 is non-contactly transmitted to the reader / writer 5 in the management personal computer 6, and the management personal computer 6 Based on the detection result transferred to, it is determined whether or not the bolt 2 is loose (step 9). Specifically, in the detection result transferred from the reader / writer 5 to the management personal computer 6, if the looseness detection wiring 13 is in a conductive state, it is determined that the bolt 2 is not loosened, and the looseness detection wiring. When 13 is in a non-conducting state, it is determined that the bolt 2 is loose.
　このように構成された緩み検知ラベル１は、例えば、鉄道車両の台車等において、台車を固定するボルトの緩み検知に用いることができる。その場合、スペーサ２０が発泡性アクリル樹脂等のように柔らかい材料から構成されていれば、鉄道車両が走行中に緩み検知ラベル１が風で飛ばされたり振動で脱落したりした場合でも、緩み検知ラベル１が人体等に当たることによる被害を小さくすることができる。 The looseness detection label 1 configured in this way can be used for detecting looseness of bolts fixing the bogie, for example, in a bogie of a railroad vehicle. In that case, if the spacer 20 is made of a soft material such as foamable acrylic resin, looseness detection is detected even if the looseness detection label 1 is blown by the wind or falls off due to vibration while the railroad vehicle is running. The damage caused by the label 1 hitting the human body or the like can be reduced.
　ここで、緩み検知ラベル１を構成するフィルム基板１０の貼着領域１０ａが帯状となっており、アンテナ１２が貼着領域１０ａの長手方向に沿って延びて形成されていることによる効果について説明する。 Here, the effect of the fact that the sticking region 10a of the film substrate 10 constituting the loosening detection label 1 has a band shape and the antenna 12 is formed extending along the longitudinal direction of the sticking region 10a will be described. ..
　まず、アンテナ１２がボルト２のヘッド部２ａの上面に対向する領域に形成されたラベルを、上記同様にボルト２と土台３とに跨って貼着した場合の通信距離を測定した。なお、通信距離の測定は、リーダライタとして、デンソーウェーブ社製ＢＨＴシリーズを用い、０．１Ｗの出力で行った。 First, the communication distance when the label formed in the region where the antenna 12 faces the upper surface of the head portion 2a of the bolt 2 was attached across the bolt 2 and the base 3 in the same manner as described above was measured. The communication distance was measured using a BHT series manufactured by Denso Wave Co., Ltd. as a reader / writer with an output of 0.1 W.
　その場合、緩み検知用配線１３が断線していない状態においては、通信距離が１０ｃｍであり、緩み検知用配線１３が断線した状態においては、通信距離が５ｃｍであった。 In that case, the communication distance was 10 cm when the looseness detection wiring 13 was not broken, and the communication distance was 5 cm when the looseness detection wiring 13 was broken.
　一方、図１ａ及び図１ｂに示した緩み検知ラベル１を、図３ａ及び図３ｂに示したように、貼着領域１０ａがスペーサ２０の側面に巻き付けられるとともに、スペーサ２０がボルト２のヘッド部２ａの上面に貼着されることにより、貼着領域１０ａがボルト２のヘッド部２ａの側面に沿うように貼着された場合の通信距離を測定した。すると、緩み検知用配線１３が断線していない状態においては、通信距離が１７ｃｍであり、緩み検知用配線１３が断線した状態においては、通信距離が８ｃｍであった。 On the other hand, as shown in FIGS. 3a and 3b, the loosening detection label 1 shown in FIGS. 1a and 1b is wound around the side surface of the spacer 20 and the spacer 20 is the head portion 2a of the bolt 2. By sticking to the upper surface of the bolt 2, the communication distance when the sticking area 10a was stuck along the side surface of the head portion 2a of the bolt 2 was measured. Then, the communication distance was 17 cm when the looseness detection wiring 13 was not broken, and the communication distance was 8 cm when the looseness detection wiring 13 was broken.
　上述したように、通信距離を延ばすためには、通信用のアンテナの長さを長くすることが考えられる。しかしながら、アンテナ１２をボルト２のヘッド部２ａの上面に対向する領域に形成する場合、ボルト２のヘッド部２ａの最大径を有する領域にアンテナを形成したとしても、その長さはボルト２のヘッド部２ａの最大径までしか長くすることはできない。 As mentioned above, in order to extend the communication distance, it is conceivable to increase the length of the communication antenna. However, when the antenna 12 is formed in a region facing the upper surface of the head portion 2a of the bolt 2, even if the antenna is formed in the region having the maximum diameter of the head portion 2a of the bolt 2, the length thereof is the head of the bolt 2. It can only be lengthened up to the maximum diameter of part 2a.
　一方、本形態の緩み検知ラベル１は、スペーサ２０の側面に巻き付けられるとともに、スペーサ２０がボルト２のヘッド部２ａの上面に貼着されることにより、ボルト２のヘッド部２ａの側面に沿うように貼着された帯状の貼着領域１０ａを有する。そのため、この帯状の長手方向に沿って延びるようにアンテナ１２を形成すれば、アンテナ１２の長さが、ボルト２のヘッド部２ａの最大径を超えるものとすることができる。それにより、上記のように通信距離を長くすることができる。 On the other hand, the looseness detection label 1 of the present embodiment is wound around the side surface of the spacer 20 and is attached to the upper surface of the head portion 2a of the bolt 2 so as to follow the side surface of the head portion 2a of the bolt 2. It has a band-shaped sticking area 10a stuck to. Therefore, if the antenna 12 is formed so as to extend along the longitudinal direction of the strip, the length of the antenna 12 can exceed the maximum diameter of the head portion 2a of the bolt 2. As a result, the communication distance can be increased as described above.
　また、本形態のように、金属製のボルト２と土台３に跨って貼着される構成において、ボルト２のヘッド部２ａの上面にスペーサ２０が貼着される場合、スペーサ２０の側面に貼着される貼着領域１０ａにアンテナ１２を形成することで、アンテナ１２とボルト２とが電気的に結合し、さらなる通信距離の向上の可能性がある。その場合、スペーサ２０の厚さを５０ｍｍとすると、アンテナ１２の幅は１０ｍｍ～４０ｍｍ程度が好ましく、さらには、３０ｍｍ～４０ｍｍ程度がより好ましい。 Further, in a configuration in which the metal bolt 2 and the base 3 are attached across the metal bolt 2 and the base 3 as in the present embodiment, when the spacer 20 is attached to the upper surface of the head portion 2a of the bolt 2, it is attached to the side surface of the spacer 20. By forming the antenna 12 in the attachment region 10a to be attached, the antenna 12 and the bolt 2 are electrically coupled to each other, and there is a possibility that the communication distance is further improved. In that case, assuming that the thickness of the spacer 20 is 50 mm, the width of the antenna 12 is preferably about 10 mm to 40 mm, more preferably about 30 mm to 40 mm.
　上述したように本形態においては、緩み検知用配線１３の導通状態を非接触送信するためのアンテナ１２が、帯状の貼着領域１０ａの長手方向に延びるように形成されている。そのため、緩み検知ラベル１がボルト２と土台３とに跨って貼着された場合、アンテナ１２がボルト２のヘッド部２ａの側面に沿うような形状を有するものとなる。それにより、ボルト２が小さな場合であっても、アンテナ１２の長さを長くすることができ、十分な通信距離を得やすくなる。また、ボルト２のヘッド部２ａに貼着される貼着領域１０ｂに非金属製のスペーサ２０を貼着し、このスペーサ２０の側面に沿ってアンテナ２０を配置することで、ボルト２が導電性材料からなるものであっても、それによって通信距離が短くなってしまうことを回避できる。 As described above, in the present embodiment, the antenna 12 for non-contact transmission of the conduction state of the looseness detection wiring 13 is formed so as to extend in the longitudinal direction of the band-shaped attachment region 10a. Therefore, when the looseness detection label 1 is attached across the bolt 2 and the base 3, the antenna 12 has a shape along the side surface of the head portion 2a of the bolt 2. As a result, even when the bolt 2 is small, the length of the antenna 12 can be increased, and it becomes easy to obtain a sufficient communication distance. Further, the non-metal spacer 20 is attached to the attachment area 10b to be attached to the head portion 2a of the bolt 2, and the antenna 20 is arranged along the side surface of the spacer 20 to make the bolt 2 conductive. Even if it is made of a material, it is possible to avoid shortening the communication distance.
　（第２の実施の形態）
　図８ａは、本開示の緩み検知ラベルの第２の実施の形態を示す上面図である。図８ｂは、図８ａに示すＡ方向から見た側面図である。 (Second Embodiment)
FIG. 8a is a top view showing a second embodiment of the looseness detection label of the present disclosure. FIG. 8b is a side view seen from the direction A shown in FIG. 8a.
　本形態は図８ａ及び図８ｂに示すように、図１ａ及び図１ｂに示した緩み検知ラベル１に対して、スペーサ２０及び粘着層３０ｂを有さない点が異なる緩み検知ラベル１０１である。 As shown in FIGS. 8a and 8b, this embodiment is a looseness detection label 101 which is different from the looseness detection label 1 shown in FIGS. 1a and 1b in that it does not have the spacer 20 and the adhesive layer 30b.
　図９ａは、図８ａ及び図８ｂに示した緩み検知ラベル１０１が図２ａ及び図２ｂに示した被着体と同一の形状の被着体に貼着された状態の一例を示す上面図である。図９ｂは、図９ａに示すＡ方向から見た側面図である。 FIG. 9a is a top view showing an example of a state in which the looseness detection label 101 shown in FIGS. 8a and 8b is attached to an adherend having the same shape as the adherend shown in FIGS. 2a and 2b. .. FIG. 9b is a side view seen from the direction A shown in FIG. 9a.
　図８ａ及び図８ｂに示した緩み検知ラベル１０１は、図１ａ及び図１ｂに示した緩み検知ラベル１のスペーサ２０を有さない構成である。そのため、貼着される被着体としては、図９ａ及び図９ｂに示すように、図２ａ及び図２ｂに示した金属製のボルト２の代わりに非金属製のボルト１０２を用いたものが考えられる。そのような被着体において図８ａ及び図８ｂに示した緩み検知ラベル１０１を用いてボルト１０２の緩み検知に利用する場合は、図９ａ及び図９ｂに示すように、フィルム基板１１０の貼着領域１１０ｂをボルト１０２のヘッド部１０２ａの上面に粘着層３０ａによって貼着するとともに、フィルム基板１１０の貼着領域１１０ａをボルト１０２のヘッド部１０２ａの側面に巻き付けて粘着層３０ａによって貼着する。さらに、フィルム基板１１０の貼着領域１１０ｃを、ボルト１０２のヘッド部１０２ａの側面に粘着層３０ａによって貼着するとともに、フィルム基板１１０の貼着領域１１０ｄを、土台３の表面に粘着層３０ａによって貼着する。その際、貼着領域１１０ａの折り部１６ａ～１６ｄによって分割される５つの領域のそれぞれが、ボルト１０２のヘッド部１０２ａの正六角形の側面のうち５つの側面のそれぞれに対応するものである。そのため、貼着領域１１０ａの長手方向の長さが、緩み検知ラベル１０１が上記のようにボルト１０２と土台３とに跨って貼着された場合に、貼着領域１１０ａが貼着領域１１０ｃに重ならないものとなっている。このように、フィルム基板１１０の貼着領域１１０ａがボルト１０２のヘッド部１０２ａの側面に巻き付けられて貼着されることで、フィルム基板１１０の貼着領域１１０ａは、ボルト１０２のヘッド部１０２ａの側面に沿うように貼着された状態となる。 The looseness detection label 101 shown in FIGS. 8a and 8b does not have the spacer 20 of the looseness detection label 1 shown in FIGS. 1a and 1b. Therefore, as the adherend to be attached, as shown in FIGS. 9a and 9b, it is conceivable that a non-metal bolt 102 is used instead of the metal bolt 2 shown in FIGS. 2a and 2b. Be done. When the looseness detection label 101 shown in FIGS. 8a and 8b is used to detect looseness of the bolt 102 in such an adherend, as shown in FIGS. 9a and 9b, the attachment region of the film substrate 110 is attached. The 110b is attached to the upper surface of the head portion 102a of the bolt 102 by the adhesive layer 30a, and the attachment region 110a of the film substrate 110 is wound around the side surface of the head portion 102a of the bolt 102 and attached by the adhesive layer 30a. Further, the sticking area 110c of the film substrate 110 is stuck to the side surface of the head portion 102a of the bolt 102 by the adhesive layer 30a, and the sticking area 110d of the film substrate 110 is stuck to the surface of the base 3 by the adhesive layer 30a. To wear. At that time, each of the five regions divided by the folded portions 16a to 16d of the attachment region 110a corresponds to each of the five side surfaces of the regular hexagonal side surface of the head portion 102a of the bolt 102. Therefore, when the length of the sticking area 110a in the longitudinal direction is such that the looseness detection label 101 is stuck across the bolt 102 and the base 3 as described above, the sticking area 110a overlaps the sticking area 110c. It has become something that does not become. In this way, the attachment region 110a of the film substrate 110 is wound around the side surface of the head portion 102a of the bolt 102 and attached, so that the attachment region 110a of the film substrate 110 is attached to the side surface of the head portion 102a of the bolt 102. It will be in a state of being pasted along the line.
　このようにしてボルト１０２と土台３とに跨って貼着された緩み検知ラベル１０１においては、緩み検知用配線１３が、ループ状に形成されていることで導通状態となっている。そして、緩み検知ラベル１０１が上記のようにしてボルト１０２と土台３とに跨って貼着されることで、土台３に対するボルト１０２の緩みを検知する緩み検知構造が構成されることになる。 In the looseness detection label 101 affixed across the bolt 102 and the base 3 in this way, the looseness detection wiring 13 is formed in a loop shape, so that the looseness detection label 101 is in a conductive state. Then, the looseness detection label 101 is attached across the bolt 102 and the base 3 as described above to form a looseness detection structure for detecting looseness of the bolt 102 with respect to the base 3.
　図１０ａは、図８ａ及び図８ｂに示した緩み検知ラベル１０１が図９ａ及び図９ｂに示したようにボルト１０２と土台３とに跨って貼着された状態においてボルト１０２に緩みが生じた際の作用を説明するための上面図である。図１０ｂは、図１０ａに示すＡ方向から見た側面図である。 FIG. 10a shows when the loosening detection label 101 shown in FIGS. 8a and 8b is loosened in the state where the loosening detection label 101 is attached across the bolt 102 and the base 3 as shown in FIGS. 9a and 9b. It is a top view for demonstrating the action of. FIG. 10b is a side view seen from the direction A shown in FIG. 10a.
　図８ａ及び図８ｂに示した緩み検知ラベル１０１が図９ａ及び図９ｂに示すようにボルト１０２と土台３とに跨って貼着された状態において、外部から加わる振動等によってボルト１０２が図１０ａに示すように反時計回りに回転して土台３に対して緩みが生じると、図１０ｂに示すように、ボルト１０２のヘッド部２ａの側面に貼着された貼着領域１１０ｃと土台３に貼着された貼着領域１１０ｄとの間に歪みが生じる。 In a state where the looseness detection label 101 shown in FIGS. 8a and 8b is attached across the bolt 102 and the base 3 as shown in FIGS. 9a and 9b, the bolt 102 is attached to FIG. 10a due to external vibration or the like. When it rotates counterclockwise as shown and loosens with respect to the base 3, as shown in FIG. 10b, it is attached to the attachment area 110c attached to the side surface of the head portion 2a of the bolt 102 and the base 3. Distortion occurs between the attached region 110d and the attached region 110d.
　すると、図１ａ及び図１ｂに示したものと同様に、その歪みによって緩み検知ラベル１０１が破断し、それに伴って緩み検知用配線１３が断線して非導通状態となる。そして、この緩み検知用配線１３の非導通状態を検出することで、土台３に締め付けられたボルト１０２に緩みが生じた旨が検知されることになる。 Then, similarly to those shown in FIGS. 1a and 1b, the looseness detection label 101 is broken due to the distortion, and the looseness detection wiring 13 is disconnected accordingly, resulting in a non-conducting state. Then, by detecting the non-conducting state of the looseness detection wiring 13, it is detected that the bolt 102 tightened to the base 3 has loosened.
　このように、土台３に締め付けられたボルト１０２に緩みが生じていない場合は、緩み検知用配線１３が導通状態となっている。一方、土台３に締め付けられたボルト１０２に緩みが生じた場合は、緩み検知用配線１３が非導通状態となる。そのため、緩み検知用配線１３の導通状態を検出することで、ボルト１０２に緩みが発生していることを検知することができる。その際、土台３に締め付けられたボルト１０２に緩みが生じた場合に緩み検知ラベル１０１が破断することを利用して、ボルト１０２に緩みが発生していることを検知することにより、土台３に締め付けられたボルト１０２の緩みが小さな場合であってもその緩みを検知することができる。 In this way, when the bolt 102 tightened to the base 3 is not loosened, the looseness detection wiring 13 is in a conductive state. On the other hand, when the bolt 102 tightened to the base 3 is loosened, the looseness detection wiring 13 is in a non-conducting state. Therefore, by detecting the continuity state of the looseness detection wiring 13, it is possible to detect that the bolt 102 is loose. At that time, by detecting that the bolt 102 is loose, the looseness detection label 101 is broken when the bolt 102 tightened to the base 3 is loosened, so that the base 3 can be loosened. Even if the tightened bolt 102 has a small looseness, the looseness can be detected.
　（第３の実施の形態）
　図１１ａは、本開示の緩み検知ラベルの第３の実施の形態を示す上面図である。図１１ｂは、図１１ａに示すＡ方向から見た側面図である。 (Third Embodiment)
FIG. 11a is a top view showing a third embodiment of the looseness detection label of the present disclosure. FIG. 11b is a side view seen from the direction A shown in FIG. 11a.
　本形態は図１１ａ及び図１１ｂに示すように、図１ａ及び図１ｂに示した緩み検知ラベル１に対して、第１の領域が２つの貼着領域２１０ａ－１，２１０ａ－２に分割されている点が異なる緩み検知ラベル２０１である。 In this embodiment, as shown in FIGS. 11a and 11b, the first region is divided into two attachment regions 210a-1,210a-2 with respect to the looseness detection label 1 shown in FIGS. 1a and 1b. The looseness detection label 201 is different in that it is present.
　２つの貼着領域２１０ａ－１，２１０ａ－２はそれぞれ、帯状形状を具備し、折り部２１５ａ－１，２１５ａ－２を介して貼着領域１０ｂに連接している。貼着領域２１０ａ－１，２１０ａ－２にはそれぞれ、その長手方向に延びたアンテナ２１２－１，２１２－２が形成されている。これらアンテナ２１２－１，２１２－２は、ループ部１４を介して互いに接続されている。また、貼着領域２１０ａ－１，２１０ａ－２には、図１ａ及び図１ｂに示したものと同様に折り部１６ａ～１６ｄが設けられている。 The two attachment regions 210a-1,210a-2 each have a strip shape and are connected to the attachment region 10b via the folded portions 215a-1,215a-2. Antennas 212-1,212-2 extending in the longitudinal direction are formed in the attachment regions 210a-1,210a-2, respectively. These antennas 212-1,122-2 are connected to each other via a loop portion 14. Further, the attachment regions 210a-1,210a-2 are provided with folded portions 16a to 16d in the same manner as those shown in FIGS. 1a and 1b.
　上記のように構成された緩み検知ラベル２０１においても、図１ａ及び図１ｂに示したものと同様に、図２ａ及び図２ｂに示した被着体に貼着してボルト２の緩み検知に利用する場合は、スペーサ２０をボルト２のヘッド部２ａの上面と重なるようにして粘着層３０ｂによって貼着するとともに、フィルム基板２１０の貼着領域２１０ａ－１，２１０ａ－２をスペーサ２０の側面にそれぞれ巻き付けて粘着層３０ａによって貼着する。さらに、フィルム基板２１０の貼着領域１０ｃを、スペーサ２０の側面とボルト２のヘッド部２ａの側面とに亘って粘着層３０ａによって貼着するとともに、フィルム基板２１０の貼着領域１０ｄを、土台３の表面に粘着層３０ａによって貼着することになる。 The looseness detection label 201 configured as described above is also used for detecting looseness of the bolt 2 by being attached to the adherend shown in FIGS. 2a and 2b in the same manner as those shown in FIGS. 1a and 1b. In this case, the spacer 20 is attached by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment areas 210a-1,210a-2 of the film substrate 210 are attached to the side surfaces of the spacer 20, respectively. It is wrapped and attached by the adhesive layer 30a. Further, the attachment region 10c of the film substrate 210 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 210 is attached to the base 3 It will be attached to the surface of the surface by the adhesive layer 30a.
　本形態の緩み検知ラベル２０１も、緩み検知用配線１３の導通状態を非接触送信するためのアンテナ２１２－１，２１２－２が、帯状の貼着領域２１０ａ－１，２１０ａ－２の長手方向に延びるようにそれぞれ形成されている。そのため、緩み検知ラベル２０１が、図２ａ及び図２ｂに示したボルト２と土台３とに跨って貼着された場合、アンテナ２１２－１，２１２－２がボルト２のヘッド部２ａの側面に沿うような形状を有するものとなる。それにより、ボルト２が小さな場合であっても、アンテナ２１２－１，２１２－２の長さを長くすることができ、十分な通信距離を得やすくなる。 In the looseness detection label 201 of this embodiment, the antennas 212-1,212-2 for non-contact transmission of the conduction state of the looseness detection wiring 13 are provided in the longitudinal direction of the strip-shaped attachment regions 210a-1,210a-2. Each is formed to extend. Therefore, when the looseness detection label 201 is attached across the bolt 2 and the base 3 shown in FIGS. 2a and 2b, the antennas 212-1,122-2 are along the side surface of the head portion 2a of the bolt 2. It will have such a shape. As a result, even when the bolt 2 is small, the length of the antenna 212-1,212-2 can be increased, and it becomes easy to obtain a sufficient communication distance.
　（第４の実施の形態）
　図１２ａは、本開示の緩み検知ラベルの第４の実施の形態を示す上面図である。図１２ｂは、図１２ａに示すＡ方向から見た側面図である。 (Fourth Embodiment)
FIG. 12a is a top view showing a fourth embodiment of the looseness detection label of the present disclosure. FIG. 12b is a side view seen from the direction A shown in FIG. 12a.
　本形態は図１２ａ及び図１２ｂに示すように、図１ａ及び図１ｂに示した緩み検知ラベル１に対して、第１の領域が２つの貼着領域３１０ａ－１，３１０ａ－２に分割されており、それぞれが貼着領域３１０ｂの互いに異なる辺に連接している点が異なる緩み検知ラベル３０１である。 In this embodiment, as shown in FIGS. 12a and 12b, the first region is divided into two attachment regions 310a-1 and 310a-2 with respect to the looseness detection label 1 shown in FIGS. 1a and 1b. The looseness detection label 301 is different in that it is connected to different sides of the sticking area 310b.
　２つの貼着領域３１０ａ－１，３１０ａ－２はそれぞれ、帯状形状を具備し、折り部３１５ａ－１，３１５ａ－２を介して貼着領域３１０ｂの互いに異なる辺に連接している。貼着領域３１０ａ－１，３１０ａ－２にはそれぞれ、その長手方向に延びたアンテナ３１２－１，３１２－２が形成されている。これらアンテナ３１２－１，３１２－２は、ループ部３１４を介して互いに接続されている。また、貼着領域３１０ａ－１，３１０ａ－２には、スペーサ２０の側面に貼着された場合にスペーサ２０の側面の角部に対向する領域に折り部１６ａ，１６ｄが設けられている。 The two attachment regions 310a-1 and 310a-2 each have a strip shape, and are connected to different sides of the attachment region 310b via the folded portions 315a-1 and 315a-2. Antennas 312-1, 312-2 extending in the longitudinal direction thereof are formed in the attachment regions 310a-1 and 310a-2, respectively. These antennas 312-1, 312-2 are connected to each other via a loop portion 314. Further, the attachment regions 310a-1 and 310a-2 are provided with folded portions 16a and 16d in regions facing the corners of the side surface of the spacer 20 when the spacer 20 is attached to the side surface.
　上記のように構成された緩み検知ラベル３０１においても、図１ａ及び図１ｂに示したものと同様に、図２ａ及び図２ｂに示した被着体に貼着してボルト２の緩み検知に利用する場合は、スペーサ２０をボルト２のヘッド部２ａの上面と重なるようにして粘着層３０ｂによって貼着するとともに、フィルム基板３１０の貼着領域３１０ａ－１，３１０ａ－２をスペーサ２０の側面にそれぞれ巻き付けて粘着層３０ａによって貼着する。さらに、フィルム基板３１０の貼着領域１０ｃを、スペーサ２０の側面とボルト２のヘッド部２ａの側面とに亘って粘着層３０ａによって貼着するとともに、フィルム基板３１０の貼着領域１０ｄを、土台３の表面に粘着層３０ａによって貼着することになる。 The looseness detection label 301 configured as described above is also used for detecting looseness of the bolt 2 by being attached to the adherend shown in FIGS. 2a and 2b in the same manner as those shown in FIGS. 1a and 1b. In this case, the spacer 20 is attached by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the attachment areas 310a-1 and 310a-2 of the film substrate 310 are attached to the side surfaces of the spacer 20, respectively. It is wrapped and attached by the adhesive layer 30a. Further, the attachment region 10c of the film substrate 310 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 310 is attached to the base 3 It will be attached to the surface of the surface by the adhesive layer 30a.
　本形態の緩み検知ラベル３０１も、緩み検知用配線１３の導通状態を非接触送信するためのアンテナ３１２－１，３１２－２が、帯状の貼着領域３１０ａ－１，３１０ａ－２の長手方向に延びるようにそれぞれ形成されている。そのため、緩み検知ラベル３０１が、図２ａ及び図２ｂに示したボルト２と土台３とに跨って貼着された場合、アンテナ３１２－１，３１２－２がボルト２のヘッド部２ａの側面に沿うような形状を有するものとなる。それにより、ボルト２が小さな場合であっても、アンテナ３１２－１，３１２－２の長さを長くすることができ、十分な通信距離を得やすくなる。 In the looseness detection label 301 of this embodiment, the antennas 312-1, 312-2 for non-contact transmission of the conduction state of the looseness detection wiring 13 are provided in the longitudinal direction of the band-shaped attachment regions 310a-1 and 310a-2. Each is formed to extend. Therefore, when the looseness detection label 301 is attached across the bolt 2 and the base 3 shown in FIGS. 2a and 2b, the antennas 312-1, 312-2 are along the side surface of the head portion 2a of the bolt 2. It will have such a shape. As a result, even when the bolt 2 is small, the lengths of the antennas 312-1, 312-2 can be increased, and it becomes easy to obtain a sufficient communication distance.
　（第５の実施の形態）
　図１３ａは、本開示の緩み検知ラベルの第５の実施の形態を示す上面図である。図１３ｂは、図１３ａに示すＡ方向から見た側面図である。 (Fifth Embodiment)
FIG. 13a is a top view showing a fifth embodiment of the looseness detection label of the present disclosure. FIG. 13b is a side view seen from the direction A shown in FIG. 13a.
　本形態は図１３ａ及び図１３ｂに示すように、図１ａ及び図１ｂに示した緩み検知ラベル１に対して、貼着領域４１０ｂが、貼着されるボルト２（図２ａ及び図２ｂ参照）の上面の形状と同一の正六角形の形状であるとともに、通信用アンテナとして、貼着領域１０ａに形成されたアンテナ１２以外に貼着領域４１０ｂにも２本のアンテナ４１２として形成されている点が異なる緩み検知ラベル４０１である。 In this embodiment, as shown in FIGS. 13a and 13b, the attachment area 410b is attached to the looseness detection label 1 shown in FIGS. 1a and 1b of the bolt 2 (see FIGS. 2a and 2b). It has a regular hexagonal shape that is the same as the shape of the upper surface, and is different in that it is formed as two antennas 412 in the sticking area 410b in addition to the antenna 12 formed in the sticking area 10a as a communication antenna. Loosening detection label 401.
　貼着領域４１０ｂに形成された２本のアンテナ４１２はそれぞれ、ループ部１４とアンテナ１２との接続点から貼着領域４１０ｂの１つの端辺に沿うように円弧状に形成されている。 Each of the two antennas 412 formed in the sticking area 410b is formed in an arc shape from the connection point between the loop portion 14 and the antenna 12 along one end side of the sticking area 410b.
　上記のように構成された緩み検知ラベル４０１においては、図１ａ及び図１ｂに示したものと同様に、図２ａ及び図２ｂに示した被着体に貼着してボルト２の緩み検知に利用する場合は、貼着領域４１０ｂ及びスペーサ２０をボルト２のヘッド部２ａの上面と重なるようにして粘着層３０ｂによって貼着するとともに、フィルム基板４１０の貼着領域１０ａをスペーサ２０の側面に巻き付けて粘着層３０ａによって貼着する。さらに、フィルム基板４１０の貼着領域１０ｃを、スペーサ２０の側面とボルト２のヘッド部２ａの側面とに亘って粘着層３０ａによって貼着するとともに、フィルム基板４１０の貼着領域１０ｄを、土台３の表面に粘着層３０ａによって貼着することになる。 In the looseness detection label 401 configured as described above, the looseness detection label 401 is attached to the adherend shown in FIGS. 2a and 2b and used for looseness detection of the bolt 2 in the same manner as those shown in FIGS. 1a and 1b. In this case, the sticking area 410b and the spacer 20 are stuck by the adhesive layer 30b so as to overlap the upper surface of the head portion 2a of the bolt 2, and the sticking area 10a of the film substrate 410 is wound around the side surface of the spacer 20. It is attached by the adhesive layer 30a. Further, the attachment area 10c of the film substrate 410 is attached by the adhesive layer 30a over the side surface of the spacer 20 and the side surface of the head portion 2a of the bolt 2, and the attachment area 10d of the film substrate 410 is attached to the base 3 It will be attached to the surface of the surface by the adhesive layer 30a.
　本形態の緩み検知ラベル４０１も、緩み検知用配線１３の導通状態を非接触送信するためのアンテナ１２が、帯状の貼着領域１０ａの長手方向に延びるように形成されている。そのため、緩み検知ラベル４０１が、図２ａ及び図２ｂに示したボルト２と土台３とに跨って貼着された場合、アンテナ１２がボルト２のヘッド部２ａの側面に沿うような形状を有するものとなる。それにより、ボルト２が小さな場合であっても、アンテナ１２の長さを長くすることができ、十分な通信距離を得やすくなる。さらに、本形態の緩み検知ラベル４０１においては、フィルム基板４１０の貼着領域１０ａのみならず、貼着領域４１０ｂにもアンテナ４１２が形成されていることにより、通信距離を延ばすことができる。 The looseness detection label 401 of this embodiment is also formed so that the antenna 12 for non-contact transmission of the conduction state of the looseness detection wiring 13 extends in the longitudinal direction of the band-shaped attachment region 10a. Therefore, when the looseness detection label 401 is attached across the bolt 2 and the base 3 shown in FIGS. 2a and 2b, the antenna 12 has a shape along the side surface of the head portion 2a of the bolt 2. It becomes. As a result, even when the bolt 2 is small, the length of the antenna 12 can be increased, and it becomes easy to obtain a sufficient communication distance. Further, in the looseness detection label 401 of the present embodiment, the communication distance can be extended by forming the antenna 412 not only in the sticking area 10a of the film substrate 410 but also in the sticking area 410b.
　なお、本形態の緩み検知ラベル４０１は、貼着領域４１０ｂが、貼着されるボルト２（図２ａ及び図２ｂ参照）の上面の形状と同一の正六角形の形状を有するものであるが、貼着領域４１０ｂの形状はこれに限らず、貼着されるボルト２（図２ａ及び図２ｂ参照）の上面からはみ出さないような形状であればよい。 The looseness detection label 401 of this embodiment has a sticking region 410b having a regular hexagonal shape that is the same as the shape of the upper surface of the bolt 2 to be stuck (see FIGS. 2a and 2b). The shape of the landing region 410b is not limited to this, and may be any shape that does not protrude from the upper surface of the bolt 2 to be attached (see FIGS. 2a and 2b).
　なお、本形態の緩み検知ラベル４０１は、図１ａ及び図１ｂに示したものと同様に貼着領域４１０ｂの緩み検知用配線１３が形成された面とは反対側の面にスペーサ２０が貼着されているが、図８ａ及び図８ｂに示したものと同様に、スペーサ２０を有さない構成とすることも考えられる。その場合、図８ａ及び図８ｂに示したものと同様に、非金属製のボルトに貼着されることが考えられる。また、本形態の緩み検知ラベル４０１は、上述したように、貼着領域４１０ｂが、貼着されるボルトの上面の形状と同一の正六角形の形状であることから、スペーサ２０を有さない構成であっても、貼着領域４１０ｂとボルトとの位置合わせが容易なものとなる。また、貼着領域４１０ｂが、貼着されるボルトの上面の形状と同一の正六角形の形状でなくても、正六角形の１つの角部となる１２０°の角部を有するものであれば、その角部を、貼着されるボルトの上面の１つの角部に重ね合わせて貼着することで、貼着領域４１０ｂとボルトとの位置合わせが容易なものとなる。 In the looseness detection label 401 of the present embodiment, the spacer 20 is attached to the surface of the attachment area 410b opposite to the surface on which the looseness detection wiring 13 is formed, similar to those shown in FIGS. 1a and 1b. However, it is also conceivable that the spacer 20 is not provided, as in the case of those shown in FIGS. 8a and 8b. In that case, it is conceivable that the bolt is attached to a non-metal bolt in the same manner as that shown in FIGS. 8a and 8b. Further, the looseness detection label 401 of the present embodiment has a configuration that does not have the spacer 20 because the attachment region 410b has a regular hexagonal shape that is the same as the shape of the upper surface of the bolt to be attached, as described above. Even so, the alignment between the sticking area 410b and the bolt becomes easy. Further, if the attachment region 410b does not have a regular hexagonal shape that is the same as the shape of the upper surface of the bolt to be attached, but has a 120 ° corner portion that is one corner of the regular hexagon, it is sufficient. By superimposing the corner portion on one corner portion on the upper surface of the bolt to be attached and attaching the corner portion, the alignment between the attachment area 410b and the bolt becomes easy.
　また、本形態においては、ボルト２のヘッド部２ａの上面と重なるように貼着される貼着領域４１０ｂに形成された２本のアンテナ４１２として円弧状のものを例に挙げて説明したが、その形状は円弧状に限らない。 Further, in the present embodiment, the two antennas 412 formed in the attachment region 410b to be attached so as to overlap the upper surface of the head portion 2a of the bolt 2 have been described by taking an arc-shaped antenna as an example. The shape is not limited to the arc shape.
　また、上述した実施の形態においては、アンテナ１２，２１２－１，２１２－２，３１２－１，３１２－２が、貼着領域１０ａ，１１０ａ，２１０ａ－１，２１０ａ－２，３１０ａ－１，３１０ａ－２の長手方向の一端から他端までに亘って形成され、ボルト２に貼着された場合にボルト２のヘッド部２ａの２つ以上の側面に対向する構成となっているが、第１の貼着領域に形成される通信用アンテナとしては、第１の貼着領域の長手方向に延びるように形成されていれば、ボルト２に貼着された場合にボルト２のヘッド部２ａの１つの側面のみに対向する構成であってもよい。なお、そのような構成においては、図１３ａ及び図１３ｂに示したもののように、貼着領域４１０ｂにおいて、ループ部１４とアンテナ１２との接続点から貼着領域４１０ｂの１つの端辺に沿うように円弧状に形成された２本のアンテナ４１２を有する構成とすれば、十分な通信距離を確保しやすくなる。 Further, in the above-described embodiment, the antennas 12, 212-1,122-2, 312-1,312-2 are attached to the attachment regions 10a, 110a, 210a-1,210a-2, 310a-1, 310a. -2 is formed from one end to the other end in the longitudinal direction, and when attached to the bolt 2, it is configured to face two or more side surfaces of the head portion 2a of the bolt 2. As the communication antenna formed in the sticking region of the above, if it is formed so as to extend in the longitudinal direction of the first sticking region, the head portion 2a of the bolt 2 is 1 when the antenna is stuck to the bolt 2. It may be configured to face only one side surface. In such a configuration, as shown in FIGS. 13a and 13b, in the sticking area 410b, the connection point between the loop portion 14 and the antenna 12 is along one end of the sticking area 410b. If the configuration has two antennas 412 formed in an arc shape, it becomes easy to secure a sufficient communication distance.
　本開示の緩み検知ラベルは、締め付け対象部品に締め付けられた締め付け部材の緩みを、非接触通信を介して検知する緩み検知ラベルであって、
　一方の面に接着層が積層され、前記締め付け部材の側面に沿うようにして貼着される帯状の第１の領域と、前記第１の領域の長手方向に直交する方向に延びるように前記第１の領域に連接し、前記締め付け部材の上面から側面に亘ってこれらに対向するように貼着される第２の領域と、前記第２の領域の前記第１の領域とは反対側に連接し、前記締め付け対象部品に貼着される第３の領域とを具備するベース基材と、
　前記ベース基材の前記第１の領域に該第１の領域の長手方向に延びるように形成された通信用アンテナと、
　前記ベース基材の前記第２の領域と前記第３の領域とに跨って形成された緩み検知用配線と、
　前記シート基材の前記第２の領域に前記通信用アンテナ及び緩み検知用配線と接続されて配置され、前記緩み検知用配線の導通状態を検出し、その検出結果を前記通信用アンテナを介して非接触送信する検出手段とを有し、
　前記第１の領域は、当該緩み検知ラベルが前記締め付け部材と前記締め付け対象部品とに跨って貼着された場合に前記第２の領域に重ならない長さを有する。 The looseness detection label of the present disclosure is a looseness detection label that detects looseness of a tightening member tightened to a tightening target component via non-contact communication.
An adhesive layer is laminated on one surface, and the band-shaped first region to be attached along the side surface of the tightening member and the first region extending in a direction orthogonal to the longitudinal direction of the first region. A second region connected to the first region and adhered so as to face the tightening member from the upper surface to the side surface thereof and the second region connected to the opposite side of the first region. Then, a base base material provided with a third region to be attached to the tightening target part, and
A communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
Looseness detection wiring formed across the second region and the third region of the base base material, and
It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna. It has a detection means for non-contact transmission,
The first region has a length that does not overlap the second region when the loosening detection label is attached across the tightening member and the tightening target component.
　上記の構成においては、締め付け部材が締め付け対象部品に締め付けられた状態で、ベース基材の帯状の第１の領域が締め付け部材の側面に沿うようにして貼着されるとともに、ベース基材の第２の領域が、締め付け部材の上面から側面に亘ってこれらに対向するように貼着され、さらに、ベース基材の第３の領域が、締め付け対象部品に貼着される。その後、締め付け対象部品に締め付けられた締め付け部材に緩みが発生すると、第２の領域と第３の領域との間にてシート基材に歪みが生じる。ベース基材には、第２の領域と第３の領域とに跨って緩み検知用配線が形成されている。ベース基材に歪みが生じていない状態においては緩み検知用配線が導通状態となっているものの、ベース基材に歪みが生じると、その歪みによってベース基材が破断することで緩み検知用配線が断線して非導通状態となる。そして、検出手段によって緩み検知用配線の導通状態が検出され、その検出結果が通信用アンテナを介して非接触送信されることで、締め付け対象部品に締め付けられた締め付け部材に緩みが発生していることが検知されることになる。その際、緩み検知用配線の導通状態を非接触送信するための通信用アンテナが、帯状の第１の領域の長手方向に延びるように形成されているので、通信用アンテナが、締め付け部材の側面に沿うような形状を有するものとなる。それにより、十分な通信距離が得やすくなる。 In the above configuration, in a state where the tightening member is tightened to the part to be tightened, the band-shaped first region of the base base material is attached along the side surface of the tightening member, and the base base material is attached. The two regions are attached so as to face each other from the upper surface to the side surface of the tightening member, and the third region of the base base material is attached to the tightening target component. After that, when the tightening member tightened to the tightening target part is loosened, the sheet base material is distorted between the second region and the third region. Looseness detection wiring is formed on the base base material so as to straddle the second region and the third region. When the base base material is not distorted, the looseness detection wiring is in a conductive state, but when the base base material is distorted, the base material is broken due to the distortion, and the looseness detection wiring is broken. The wire breaks and becomes non-conducting. Then, the detection means detects the conduction state of the loosening detection wiring, and the detection result is transmitted non-contact via the communication antenna, so that the tightening member tightened to the tightening target component is loosened. Will be detected. At that time, since the communication antenna for non-contact transmission of the conduction state of the looseness detection wiring is formed so as to extend in the longitudinal direction of the band-shaped first region, the communication antenna is formed on the side surface of the tightening member. It will have a shape that conforms to. As a result, it becomes easy to obtain a sufficient communication distance.
　また、締め付け部材の上面の形状と略同一の外形を具備し、ベース基材の第２の領域の一部に接着層によって貼着された非導電性部材を有し、第１の領域の長手方向に直交する方向の幅が、非導電性部材の厚さと略同一であれば、締め付け部材が導電性材料からなるものであっても、それによって通信距離が短くなってしまうことを回避できる。ここで、導電性材料からなる部品に取り付けられた場合に通信距離の低下を抑制するために、いわゆる金属対応アンテナというものが実用化されている。しかしながら、金属対応アンテナにおいては、誘電体やメタマテリアルが焼結体から構成されているため硬構造物となる場合が多い。そのため、立体構造となって取り付けが煩雑となってしまうとともに、車軸への取り付けを想定した場合、走行車に脱落すると硬構造物が高速で吹き飛んで周囲に危険が及んでしまう。そこで、非導電性部材を用いることで、金属対応アンテナを用いることなく、締め付け部材が導電性材料からなるものであっても、それによって通信距離が短くなってしまうことを回避できる。 Further, it has an outer shape substantially the same as the shape of the upper surface of the tightening member, has a non-conductive member attached to a part of the second region of the base base material by an adhesive layer, and has a length of the first region. If the width in the direction orthogonal to the direction is substantially the same as the thickness of the non-conductive member, even if the tightening member is made of a conductive material, it is possible to avoid shortening the communication distance. Here, a so-called metal-compatible antenna has been put into practical use in order to suppress a decrease in communication distance when attached to a component made of a conductive material. However, metal-compatible antennas often have a hard structure because the dielectric or metamaterial is composed of a sintered body. Therefore, it becomes a three-dimensional structure and installation becomes complicated, and when it is assumed that it is installed on an axle, if it falls off on a traveling vehicle, the hard structure blows off at high speed and poses a danger to the surroundings. Therefore, by using the non-conductive member, it is possible to avoid shortening the communication distance even if the tightening member is made of a conductive material without using a metal-compatible antenna.
　また、通信用アンテナが、第２の領域にも形成されている構成としてもよい。 Further, the communication antenna may be formed in the second region as well.
　１，１０１，２０１，３０１，４０１　　緩み検知ラベル
　２，１０２　　ボルト
　２ａ，１０２ａ　　ヘッド部
　２ｂ，１０２ｂ　　ねじ部
　３　　土台
　３ａ　　ねじ孔
　５　　リーダライタ
　６　　管理用パソコン
　１０，１１０，２１０，３１０，４１０　　フィルム基板
　１０ａ～１０ｄ，１１０ａ～１１０ｄ，２１０ａ－１，２１０ａ－２，３１０ａ－１，３１０ａ－２，４１０ｂ　　貼着領域
　１１　　ＩＣチップ
　１２，２１２－１，２１２－２，３１２－１，３１２－２，４１２　　アンテナ
　１３　　緩み検知用配線
　１４，３１４　　ループ部
　１５ａ～１５ｃ，１６ａ～１６ｄ，２１５ａ－１，２１５ａ－２，３１５ａ－１，３１５ａ－２　　折り部
　２０　　スペーサ
　３０ａ，３０ｂ　　粘着層 1,101,201,301,401 Loosening detection label 2,102 Bolt 2a, 102a Head part 2b, 102b Thread part 3 Base 3a Screw hole 5 Reader / writer 6 Management personal computer 10,110,210,310,410 Film substrate 10a ~ 10d, 110a ~ 110d, 210a-1,210a-2, 310a-1, 310a-2,410b Attachment area 11 IC chip 12,212-1,122-2,312-1,312-2,412 Antenna 13 Loosening detection wiring 14,314 Loop part 15a to 15c, 16a to 16d, 215a-1,215a-2, 315a-1,315a-2 Folded part 20 Spacer 30a, 30b Adhesive layer

Claims (4)

  1. 　締め付け対象部品に締め付けられた締め付け部材の緩みを、非接触通信を介して検知する緩み検知ラベルであって、
    　一方の面に接着層が積層され、前記締め付け部材の側面に沿うようにして貼着される帯状の第１の領域と、前記第１の領域の長手方向に直交する方向に延びるように前記第１の領域に連接し、前記締め付け部材の上面から側面に亘ってこれらに対向するように貼着される第２の領域と、前記第２の領域の前記第１の領域とは反対側に連接し、前記締め付け対象部品に貼着される第３の領域とを具備するベース基材と、
    　前記ベース基材の前記第１の領域に該第１の領域の長手方向に延びるように形成された通信用アンテナと、
    　前記ベース基材の前記第２の領域と前記第３の領域とに跨って形成された緩み検知用配線と、
    　前記シート基材の前記第２の領域に前記通信用アンテナ及び緩み検知用配線と接続されて配置され、前記緩み検知用配線の導通状態を検出し、その検出結果を前記通信用アンテナを介して非接触送信する検出手段とを有し、
    　前記第１の領域は、当該緩み検知ラベルが前記締め付け部材と前記締め付け対象部品とに跨って貼着された場合に前記第２の領域に重ならない長さを有する緩み検知ラベル。     A looseness detection label that detects looseness of the tightening member tightened to the part to be tightened via non-contact communication.
    An adhesive layer is laminated on one surface, and the band-shaped first region to be attached along the side surface of the tightening member and the first region extending in a direction orthogonal to the longitudinal direction of the first region. A second region connected to the first region and adhered so as to face the tightening member from the upper surface to the side surface thereof and the second region connected to the opposite side of the first region. Then, a base base material provided with a third region to be attached to the tightening target part, and
    A communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
    Looseness detection wiring formed across the second region and the third region of the base base material, and
    It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna. It has a detection means for non-contact transmission,
    The first region is a looseness detection label having a length that does not overlap with the second region when the looseness detection label is attached across the tightening member and the tightening target component.
  2. 　請求項１に記載の緩み検知ラベルにおいて、
    　前記締め付け部材の上面の形状と略同一の外形を具備し、前記ベース基材の前記第２の領域の一部に前記接着層によって貼着された非導電性部材を有し、
    　前記第１の領域の長手方向に直交する方向の幅が、前記非導電性部材の厚さと略同一である、緩み検知ラベル。     In the looseness detection label according to claim 1,
    It has an outer shape substantially the same as the shape of the upper surface of the tightening member, and has a non-conductive member attached to a part of the second region of the base base material by the adhesive layer.
    A loosening detection label whose width in a direction orthogonal to the longitudinal direction of the first region is substantially the same as the thickness of the non-conductive member.
  3. 　請求項１または請求項２に記載の緩み検知ラベルにおいて、
    　前記通信用アンテナは、前記第２の領域にも形成されている、緩み検知ラベル。     In the loosening detection label according to claim 1 or 2.
    The communication antenna is a looseness detection label that is also formed in the second region.
  4. 　締め付け対象部品と、
    　前記締め付け対象部品に締め付けられた締め付け部材と、
    　前記締め付け部材の上面の形状と略同一の外形を具備し、前記締め付け部材の上面に貼着された非導電性部材と、
    　一方の面に接着層が積層され、前記非導電性部材の側面に巻き付けられて前記接着層によって貼着された帯状の第１の領域と、前記第１の領域の長手方向に直交する方向に延びるように前記第１の領域に連接し、前記非導電性部材の上面から側面、さらには前記締め付け部材の側面に亘って前記接着層によって貼着された第２の領域と、前記第２の領域の前記第１の領域とは反対側に連接し、前記締め付け対象部品に前記接着層によって貼着された第３の領域とを具備するベース基材と、
    　前記ベース基材の前記第１の領域に該第１の領域の長手方向に延びるように形成された通信用アンテナと、
    　前記ベース基材の前記第２の領域と前記第３の領域とに跨って形成された緩み検知用配線と、
    　前記シート基材の前記第２の領域に前記通信用アンテナ及び緩み検知用配線と接続されて配置され、前記緩み検知用配線の導通状態を検出し、その検出結果を前記通信用アンテナを介して非接触送信する検出手段とを有し、
    　前記第１の領域は、前記非導電性部材の側面に巻き付けられて貼着された状態において、前記非導電性部材及び前記締め付け部材の側面に貼着された前記第２の領域に重ならない長さを有する、緩み検知構造。     Parts to be tightened and
    The tightening member tightened to the tightening target part and
    A non-conductive member having an outer shape substantially the same as the shape of the upper surface of the tightening member and attached to the upper surface of the tightening member.
    An adhesive layer is laminated on one surface, and the band-shaped first region wound around the side surface of the non-conductive member and attached by the adhesive layer and the direction orthogonal to the longitudinal direction of the first region. A second region that is connected to the first region so as to extend and is adhered by the adhesive layer from the upper surface to the side surface of the non-conductive member and further to the side surface of the tightening member, and the second region. A base base material which is connected to the side of the region opposite to the first region and includes a third region which is attached to the tightening target component by the adhesive layer.
    A communication antenna formed in the first region of the base base material so as to extend in the longitudinal direction of the first region.
    Looseness detection wiring formed across the second region and the third region of the base base material, and
    It is arranged in the second region of the sheet base material in connection with the communication antenna and the looseness detection wiring, detects the conduction state of the looseness detection wiring, and reports the detection result via the communication antenna. It has a detection means for non-contact transmission and
    The first region has a length that does not overlap with the second region attached to the side surface of the non-conductive member and the tightening member in a state of being wound and attached to the side surface of the non-conductive member. Looseness detection structure with dimensions.
PCT/JP2020/010712 2019-03-19 2020-03-12 Looseness detection label and looseness detection structure WO2020189474A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
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JPS5324325B2 (en) * 1973-11-27 1978-07-20
JP2007533562A (en) * 2003-12-12 2007-11-22 クレセンス、フランシス・エム A device for electronically determining whether a tax has been paid on a product
JP2011152932A (en) * 2010-01-27 2011-08-11 Toppan Printing Co Ltd Container with ic tag
US20140184390A1 (en) * 2012-12-28 2014-07-03 Meps Real-Time, Inc. Rfid tag for medication container closure
JP2018529119A (en) * 2015-09-08 2018-10-04 凸版印刷株式会社 IC tag-attached seal and its mounting method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5324325B2 (en) * 1973-11-27 1978-07-20
JP2007533562A (en) * 2003-12-12 2007-11-22 クレセンス、フランシス・エム A device for electronically determining whether a tax has been paid on a product
JP2011152932A (en) * 2010-01-27 2011-08-11 Toppan Printing Co Ltd Container with ic tag
US20140184390A1 (en) * 2012-12-28 2014-07-03 Meps Real-Time, Inc. Rfid tag for medication container closure
JP2018529119A (en) * 2015-09-08 2018-10-04 凸版印刷株式会社 IC tag-attached seal and its mounting method

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