Industrial belt

Abstract

To provide an industrial belt in which a non-contact type data receiving / transmitting body is hardly damaged.SOLUTION: The industrial belt is provided with a non-contact type data receiving / transmitting body 10 and a belt body installed with the non-contact type data receiving / transmitting body 10. The non-contact type data receiving / transmitting body 10 includes a plate-like base material 11, an IC chip 13, and an antenna 12 having a pair of radiation elements 17 and 18. The base material 11 is arranged so that the longitudinal direction thereof intersects the longitudinal direction of the belt body. The radiation element 17 includes a first extension unit 41 at least partially extending in a direction intersecting the longitudinal direction of the belt body, and a second extension unit 42 extending from the tip of the first extension unit 41 with the longitudinal direction of the belt body as the average extension direction. The first extension unit 41 has a non-bending shape.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to industrial belts. [Background technology]

[0002] RFID (Radio Frequency IDentification) tags (non-contact data transmitters and receivers) are used for the purpose of distribution management, etc. RFID tags can perform short-range wireless communication with a reader / writer. For example, an industrial belt is wound around a pulley and runs with the rotation of the pulley. Patent Document 1 discloses a belt on which an RFID tag is attached. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-118297 A Summary of the Invention [Problem to be solved by the invention]

[0004] The aforementioned belt is bent when it is wound around the pulleys and travels, which can damage the antenna of the RFID tag (a contactless data transmitter / receiver).

[0005] An object of one aspect of the present invention is to provide an industrial belt that is less susceptible to damage to non-contact data transmitters and receivers. [Means for solving the problem]

[0006] One aspect of the present invention employs the following configuration. an industrial belt to be wound around a rotating body, the industrial belt comprising: a non-contact data transmitter / receiver; and a flexible belt body on which the non-contact data transmitter / receiver is installed, the non-contact data transmitter / receiver comprising: a plate-shaped base material; an IC chip provided on the base material; a circuit provided on the base material and electrically connected to the IC chip; and an antenna having a pair of radiating elements electrically connected to the circuit at a connection point, the base material being disposed such that its longitudinal direction intersects with the longitudinal direction of the belt body in a plan view, the radiating element comprising: a first extension portion at least a portion of which extends from the connection point in a direction intersecting the longitudinal direction of the belt body; and a second extension portion extending from a tip of the first extension portion with the longitudinal direction of the belt body as an average extension direction, the first extension portion having a non-bending shape.

[0007] The first extension portion may be linear.

[0008] The first extension portion may extend from the connection point in a direction perpendicular to the longitudinal direction of the belt body.

[0009] The second extension portion may have a plurality of main portions spaced apart in the longitudinal direction of the belt body, and a plurality of inverted portions alternately connecting one ends and the other ends of adjacent main portions.

[0010] The industrial belt may be a power transmission belt that is wrapped around a rotating body to transmit power.

[0011] The industrial belt may be a conveyor belt for conveying articles. Effect of the Invention

[0012] According to one aspect of the present invention, an industrial belt that is less susceptible to damage to non-contact data transmitters and receivers can be provided. [Brief description of the drawings]

[0013] [Figure 1]FIG. 1 is a plan view of an internal structure of an industrial belt according to a first embodiment. [Diagram 2] FIG. 2 is a plan view of an RFID tag of the industrial belt according to the first embodiment. [Diagram 3] FIG. 2 is a plan view of the substrate of the RFID tag. [Figure 4] FIG. 2 is a perspective view of a first radiating element of the RFID tag. [Diagram 5] FIG. 2 is a perspective view of a second radiating element of the RFID tag. [Figure 6] 1 is a configuration diagram of a transmission device using an industrial belt according to a first embodiment. [Figure 7] FIG. 1 is a schematic perspective view of a toothed belt according to a first embodiment. [Figure 8] 1 is a perspective view of a toothed belt according to a first embodiment, partially in cross section. [Figure 9] FIG. 6 is a plan view of the internal structure of an industrial belt according to a second embodiment. [Figure 10] FIG. 11 is a plan view of the internal structure of an industrial belt according to a third embodiment. [Figure 11] FIG. 13 is a plan view of a modified example of the antenna. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an industrial belt according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the embodiment described below is specifically described to better understand the gist of the present invention, and does not limit the present invention. In the drawings referred to below, the dimensions of each member are appropriately changed as necessary to facilitate understanding.

[0015] [Industrial belt] (First embodiment) 6 is a configuration diagram of a power transmission device 500 using the industrial belt 100 according to the first embodiment. The industrial belt 100 is a power transmission belt that transmits power.

[0016] Fig. 7 is a schematic perspective view of a toothed belt 200, which is an example of a power transmission belt. Fig. 8 is a perspective view of a partial cross-sectional shape of the toothed belt 200.

[0017] As shown in FIG. 6, the transmission device 500 includes an industrial belt 100, a driving pulley 101, a driven pulley 102, and a tension pulley 103. The driving pulley 101, the driven pulley 102, and the tension pulley 103 are examples of "rotating bodies." The driving pulley 101 and the driven pulley 102 may have a plurality of meshing grooves on their peripheries. The meshing grooves mesh with teeth 115 formed on a toothed belt 200 shown in Figs. 7 and 8. The tension pulley 103 applies tension to the industrial belt 100 by pressing the industrial belt 100.

[0018] As shown in FIG. 7, the toothed belt 200 is formed in an endless shape. As shown in FIG. 8, the toothed belt 200 includes a belt body 110 and an RFID tag (non-contact data transmitter / receiver) 10. The belt body 110 includes a belt member 110 and an RFID tag (non-contact data transmitter / receiver) 10.

[0019] The belt body 110 includes an inner layer 111, an intermediate layer 112, and an outer layer 113. A core wire 114 is embedded in the intermediate layer 112 as a core body. The inner layer 111, the intermediate layer 112, and the outer layer 113 are formed of synthetic resin, rubber, or the like. Examples of materials constituting the inner layer 111, the intermediate layer 112, and the outer layer 113 include ethylene-α-olefin elastomers such as ethylene-propylene-diene terpolymer (EPDM) and ethylene-propylene copolymer (EPM); chloroprene rubber (CR); chlorosulfonated polyethylene rubber (CSM); hydrogenated acrylonitrile rubber (H-NBR), polyurethane, and the like.

[0020] A plurality of teeth 115 are formed on the inner surface of the inner layer 111. The plurality of teeth 115 are formed at equal intervals in the length direction of the toothed belt 200. The teeth 115 mesh with meshing grooves of the driving pulley 101 and the driven pulley 102.

[0021] The core wire 114 is made of, for example, synthetic fibers such as polyester fibers, polyethylene naphthalate fibers, aramid fibers, vinylon fibers, etc.; metal wires such as steel cords; inorganic fibers such as carbon fibers, glass fibers, etc.; or composite fibers. The core wire 114 is provided, for example, along the length direction of the belt body 110. Note that, instead of the core wire 114, canvas made of synthetic fibers such as polyester fibers, polyamide fibers, aramid fibers, etc. may be used as the core body. The canvas may be provided, for example, by being embedded in the intermediate layer 112.

[0022] The industrial belt 100 has flexibility. For example, the industrial belt 100 is elastically bendable and deformable in the thickness direction.

[0023] 6, the industrial belt 100 is wound around a driving pulley 101 and a driven pulley 102. The industrial belt 100 transmits the driving force (power) of the driving pulley 101 to the driven pulley 102. The transmission device 500 is used in, for example, machine tools, printing machines, injection molding machines, etc.

[0024] Fig. 1 is a plan view of the internal structure of an industrial belt 100. Fig. 2 is a plan view of a portion of an RFID tag 10. Fig. 3 is a plan view of a substrate 11 of an RFID tag 10. Fig. 4 is a perspective view of a first radiating element 17 of an RFID tag 10. Fig. 5 is a perspective view of a second radiating element 18 of an RFID tag 10.

[0025] As shown in FIG. 1, an RFID tag 10 includes a substrate 11, an antenna 12, an IC chip 13 (see FIG. 2), and a matching circuit 16 (see FIG. 3). The base material 11 is formed in a rectangular plate shape. The base material 11 has a rectangular shape in a plan view. One surface (the surface on the +Z direction side) of the base material 11 is called a first main surface 11a (see FIG. 2).

[0026] In the following description, an XYZ orthogonal coordinate system may be used. As shown in FIG. 2, the X direction is the short direction of the first main surface 11a. The Y direction is the long direction of the first main surface 11a. The Y direction is perpendicular to the X direction in a plane along the first main surface 11a. The Z direction is perpendicular to the X and Y directions. The Z direction is the thickness direction of the base material 11. Viewing from a direction parallel to the Z direction is called planar view. The base material 11 has a shape in which the dimension in the Y direction (second direction) is greater than the dimension in the X direction (first direction).

[0027] The right side in Fig. 2 is one direction in the X direction (+X direction). The left side in Fig. 2 is the opposite direction to the +X direction (-X direction). The top side in Fig. 2 is one direction in the Y direction (+Y direction). The bottom side in Fig. 2 is the opposite direction to the +Y direction (-Y direction).

[0028] A resin substrate, a paper substrate, a ceramic substrate, etc. can be used as the substrate 11. Examples of the resin substrate include substrates made of polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polyethylene naphthalate (PEN); substrates made of polyolefin resins such as polyethylene (PE) and polypropylene (PP); substrates made of polyethylene fluoride-based resins such as polyvinyl fluoride, polyvinylidene fluoride, and polytetrafluoroethylene; substrates made of polyamide resins such as nylon 6 and nylon 6,6; substrates made of vinyl polymers such as polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer, polyvinyl alcohol, and vinylon; substrates made of acrylic resins such as polymethyl methacrylate, polyethyl methacrylate, polyethyl acrylate, and polybutyl acrylate; substrates made of polystyrene; substrates made of polycarbonate (PC); substrates made of polyarylate; and substrates made of polyimide.

[0029] The substrate 11 may be made of fiber-reinforced resin. For example, a substrate made by impregnating a glass fiber cloth with an epoxy resin and heat-curing the same can be used. The flexural modulus of the substrate 11 (based on JIS K7171 or JIS R1602, for example, a three-point or four-point bending test) may be, for example, 1 GPa or more (preferably 10 GPa or more).

[0030] As shown in Fig. 3, the IC chip 13 is provided on the first main surface 11a of the substrate 11. The IC chip 13 is located approximately at the center of the first main surface 11a in the longitudinal direction. There are no particular limitations on the IC chip 13, and it is sufficient that information can be written and read in a non-contact manner via the antenna 12 and the matching circuit 16. The IC chip 13 may include a temperature sensor 15. The temperature sensor 15 can measure the temperature of the belt body 110.

[0031] The matching circuit 16 has a first wiring 21. The matching circuit 16 is capable of adjusting the impedance by the pattern shape. The matching circuit 16 is an example of a "circuit".

[0032] The first wiring 21 includes a first path 23 and a second path 24. One end 23a of the first path 23 is electrically connected to the IC chip 13. The other end 23b of the first path 23 is electrically connected to a first connection point 25. One end 24a of the second path 24 is electrically connected to the IC chip 13. The other end 24b of the second path 24 is electrically connected to a second connection point 26. The first connection point 25 is located away from the IC chip 13 in the +Y direction. The second connection point 26 is located away from the IC chip 13 in the -Y direction.

[0033] The matching circuit 16 can be formed on the first main surface 11a of the base material 11 by metal plating. The matching circuit 16 may be formed by a conductive foil. The matching circuit 16 may be formed by a printing method such as screen printing or inkjet printing using a polymer-type conductive ink. Examples of the conductive foil forming the matching circuit 16 include copper foil, silver foil, gold foil, platinum foil, and aluminum foil. Examples of the metal plating forming the matching circuit 16 include copper plating, silver plating, gold plating, and platinum plating.

[0034] 2, the antenna 12 includes a first radiating element 17 and a second radiating element 18. The first radiating element 17 and the second radiating element 18 may be referred to as "radiating elements 17, 18." The first radiating element 17 and the second radiating element 18 are an example of a "pair of radiating elements."

[0035] The radiating elements 17, 18 are formed of a linear body. The radiating elements 17, 18 are formed of a metal such as steel, stainless steel, copper, or a copper alloy. The radiating elements 17, 18 are preferably formed of, for example, a hard steel wire or a copper alloy wire. The linear body constituting the radiating elements 17, 18 may be an insulating coated wire material such as an enamel wire. If an insulating coated wire material is used as the linear body, electrical current between the linear bodies in the winding portion 33 can be suppressed.

[0036] The first radiating element 17 can be electrically connected to and fixed to the first connection point 25 by soldering, eyelet fastening, crimping, ultrasonic bonding, or the like. The first radiating element 17 is electrically connected to the matching circuit 16 at the first connection point 25 via a metal joint 27 (such as a solder joint) (see FIG. 3). The first connection point 25 is an example of a "connection point".

[0037] The second radiating element 18 can be electrically connected to and fixed to the second connection point 26 by soldering, grommets, crimping, ultrasonic bonding, or the like. The second radiating element 18 is electrically connected to the matching circuit 16 at the second connection point 26 via a metal joint 28 (such as a solder joint) (see FIG. 3). The second connection point 26 is an example of a "connection point".

[0038] The first radiating element 17 includes a first extending portion 41 and a second extending portion . The first extension portion 41 extends from the first connection point 25 to the outside of the base material 11 in a planar view. More specifically, the first extension portion 41 extends linearly from the first connection point 25 in the longitudinal direction (+Y direction) of the base material 11 in a planar view, and reaches the outside of the base material 11 (the +Y direction side of the base material 11). The first extension portion 41 is linear. The tip (end in the +Y direction) of the first extension portion 41 reaches the inverted portion 32 that is closest to the first connection point 25.

[0039] The first extending portion 41 is linear, and therefore has a shape without a bent portion (non-bent shape). A "non-bent shape" is a shape without a sharp bend (for example, an L-shaped bend). The non-bent shape is not limited to a linear shape, but also includes a circular arc shape, an elliptical arc shape, a quadratic curve shape, and the like.

[0040] The first extending portion 41 intersects with the outer peripheral edge of the short side of the base material 11 in a plan view. The first extending portion 41 extends in the short side direction of the belt body 110 from the first connection point 25 in a plan view (see FIG. 1). The short side direction of the belt body 110 is an example of a direction intersecting with the longitudinal direction of the belt body 110.

[0041] By forming the first extending portion 41 in this manner, even if a bending force is applied to the RFID tag 10 when the industrial belt 100 is driven, the bending force is less likely to act on the first extending portion 41. The bending force is also less likely to act at the contact point between the first extending portion 41 and the base material 11 (the intersection point between the first extending portion 41 and the outer periphery of the base material 11 in a plan view).

[0042] The second extending portion 42 includes a plurality of straight portions 31 (main portions) and a plurality of inverted portions 32. The second extending portion 42 is located outside the base material 11 in a plan view.

[0043] The straight line portions 31 are linearly shaped along the Y direction. The extension direction of the straight line portions 31 (Y direction) is a direction intersecting the X direction. The straight line portions 31 are substantially parallel to one another. The straight line portions 31 are arranged side by side in the X direction (main direction) at intervals in the X direction.

[0044] The multiple straight portions 31 are referred to as the first straight portion 31, the second straight portion 31, ... in order of arrangement (in the +X direction) from the straight portion 31 closest to the first connection point 25. The multiple inverted portions 32 are referred to as the first inverted portion 32, the second inverted portion 32, ... in order of arrangement (in the +X direction) from the inverted portion 32 closest to the first connection point 25. The first inverted portion 32 is formed continuous to the tip of the first extension portion 41 (the end in the +Y direction).

[0045] The inversion portions 32 alternately connect one end and the other end of adjacent straight portions 31. In particular, the nth inversion portion 32 connects one end (end in the +Y direction) of the nth straight portion 31 to one end (end in the +Y direction) of the n+1th straight portion 31 (n is an odd number equal to or greater than 1). The n+1th inversion portion 32 connects the other end (end in the -Y direction) of the n+1th straight portion 31 to the other end (end in the -Y direction) of the n+2th straight portion 31.

[0046] In this way, the multiple inversion portions 32 alternately connect one ends and the other ends of adjacent straight portions 31, so that the first radiating element 17 has a meandering shape as a whole.

[0047] The second extending portion 42 has a plurality of repeating units 43 each consisting of two adjacent straight line portions 31 and two adjacent inverted portions 32. The plurality of repeating units 43 are aligned in the +X direction starting from the tip of the first extending portion 41. The average extension direction of the second extending portion 42 is the +X direction in which the repeating units 43 are aligned.

[0048] 4, the inverted portion 32 has a winding portion 33. The winding portion 33 has a circular shape in a plan view. The winding portion 33 has a helical shape that rotates around an axis (not shown) along the Z direction while proceeding in the Z direction. For example, the winding portion 33 (first winding portion 33) of the first inversion portion 32 is in a spiral shape of 1.5 turns, starting from one end (the end in the +Y direction) of the first straight portion 31 and ending at one end (the end in the +Y direction) of the second straight portion 31. The winding portion 33 of the nth inversion portion 32 (n is an odd number equal to or greater than 1) has the same structure as the first winding portion 33.

[0049] The winding portion 33 (second winding portion 33) of the second inversion portion 32 is in a spiral shape of 1.5 turns, starting from the other end (the end in the -Y direction) of the second straight portion 31 and ending at the other end (the end in the -Y direction) of the third straight portion 31. The winding portion 33 of the (n+1)th inversion portion 32 (n is an odd number equal to or greater than 1) has the same structure as the second winding portion 33.

[0050] As shown in FIG. 2, the second radiating element 18 includes a first extending portion 141 and a second extending portion 142. The first extending portion 141 and the second extending portion 142 are arranged in a rectangular shape. The first extending portion 141 extends from the second connection point 26 to the outside of the base material 11 in a plan view. More specifically, the first extending portion 141 extends from the second connection point 26 in the longitudinal direction (-Y direction) of the base material 11 and reaches the outside of the base material 11 (the -Y direction side of the base material 11). The first extending portion 141 is linear. The tip (end in the -Y direction) of the first extending portion 141 reaches the inverted portion 132 that is closest to the second connection point 26.

[0051] The first extending portion 141 is linear and has no bent portion (non-bent shape). The first extending portion 141 intersects with the outer peripheral edge of the short side of the base material 11 in a plan view. The first extending portion 141 extends from the second connecting portion 26 in the short direction of the belt body 110 (see FIG. 1).

[0052] By forming the first extending portion 141 in this manner, even if a bending force is applied to the RFID tag 10 when the industrial belt 100 is driven, the bending force is less likely to act on the first extending portion 141. The bending force is also less likely to act at a contact point between the first extending portion 141 and the base material 11 (the intersection point between the first extending portion 141 and the outer periphery of the base material 11 in a plan view).

[0053] The second extending portion 142 includes a plurality of straight portions 131 (main portions) and a plurality of inverted portions 132. The second extending portion 142 is located outside the base material 11 in a plan view.

[0054] The straight line portions 131 are linearly shaped along the Y direction. The extension direction (Y direction) of the straight line portions 131 is a direction intersecting the X direction. The straight line portions 131 are substantially parallel to one another. The straight line portions 131 are arranged side by side in the X direction (main direction) at intervals in the X direction.

[0055] The multiple straight portions 131 are referred to as the first straight portion 131, the second straight portion 131, ... in order of arrangement (in the -X direction) from the straight portion 131 closest to the second connection point 26. The multiple inverted portions 132 are referred to as the first inverted portion 132, the second inverted portion 132, ... in order of arrangement (in the -X direction) from the inverted portion 132 closest to the second connection point 26. The first inverted portion 132 is formed continuous to the tip (the end in the -Y direction) of the first extending portion 141.

[0056] The inversion portions 132 alternately connect one end and the other end of adjacent straight portions 131. In particular, the m-th inversion portion 132 connects one end (end in the -Y direction) of the m-th straight portion 131 to one end (end in the -Y direction) of the m+1-th straight portion 131 (m is an odd number equal to or greater than 1). The m+1-th inversion portion 132 connects the other end (end in the +Y direction) of the m+1-th straight portion 131 to the other end (end in the +Y direction) of the m+2-th straight portion 131.

[0057] In this way, the multiple inverted portions 132 alternately connect one ends and the other ends of adjacent straight portions 131 to each other, so that the second radiating element 18 has a meandering shape as a whole.

[0058] The second extending portion 142 has a plurality of repeating units 143 each consisting of two adjacent straight line portions 131 and two adjacent inverted portions 132. The plurality of repeating units 143 are aligned in the −X direction starting from the tip of the first extending portion 141. The average extension direction of the second extending portion 142 is the −X direction in which the repeating units 143 are aligned.

[0059] 5, the inverted portion 132 has a winding portion 133. The winding portion 133 has a circular shape in a plan view. The winding portion 133 has a helical shape that rotates around an axis (not shown) along the Z direction while proceeding in the Z direction. For example, the winding portion 133 (first winding portion 133) of the first inversion portion 132 is in a spiral shape of 1.5 turns, starting from one end (end in the -Y direction) of the first straight portion 131 and ending at one end (end in the -Y direction) of the second straight portion 131. The winding portion 133 of the m-th inversion portion 132 (m is an odd number equal to or greater than 1) has the same structure as the first winding portion 133.

[0060] The winding portion 133 (second winding portion 133) of the second inversion portion 132 is in a spiral shape of 1.5 turns, starting from the other end (the end in the +Y direction) of the second straight portion 131 and ending at the other end (the end in the +Y direction) of the third straight portion 131. The winding portion 133 of the (m+1)th inversion portion 132 (m is an odd number equal to or greater than 1) has the same structure as the second winding portion 133.

[0061] As shown in Figures 4 and 5, the winding portion 33, 133 is helical and has elasticity as a torsion spring. Therefore, the radiating elements 17, 18 can be elastically deformed so that the angle between adjacent straight line portions increases or decreases. Therefore, the winding portion 33, 133 can absorb stress when an external force (e.g., tensile force or compressive force) acts on the radiating elements 17, 18. Therefore, local stress acting on the radiating elements 17, 18 can be suppressed, and damage can be avoided.

[0062] As shown in FIG. 2, the first radiating element 17 and the second radiating element 18 are rotationally symmetric with the Z-direction axis passing through the center of the base material 11 as the central axis. The radiating elements 17 and 18 can be produced by subjecting a linear body to forming processing.

[0063] As shown in Fig. 1, the RFID tag 10 is attached to a belt body 110. The base material 11 is oriented along the belt body 110. The thickness direction of the base material 11 is along the thickness direction of the belt body 110 (the thickness direction of the inner layer 111, the intermediate layer 112, and the outer layer 113) (see Fig. 8).

[0064] The location where the RFID tag 10 is installed is not particularly limited. As shown in FIG. 8 , the RFID tag 10 may be installed inside the outer layer 113. The RFID tag 10 may be installed inside the intermediate layer 112. The RFID tag 10 may be installed inside the inner layer 111. The RFID tag 10 may be installed between the outer layer 113 and the intermediate layer 112. The RFID tag 10 may be installed between the intermediate layer 112 and the inner layer 111. The RFID tag 10 may be installed on the outer surface of the outer layer 113 or on the inner surface of the inner layer 111.

[0065] The manner in which the RFID tag 10 is installed will now be described. 1, the RFID tag 10 is disposed so that the longitudinal direction of the substrate 11 intersects with the longitudinal direction of the belt body 110. The longitudinal direction of the substrate 11 is preferably aligned with the short side direction of the belt body 110. The longitudinal direction of the substrate 11 is preferably perpendicular to the longitudinal direction of the belt body 110, but may be inclined with respect to the longitudinal direction of the belt body 110. The inclination angle of the longitudinal direction of the substrate 11 with respect to the longitudinal direction of the belt body 110 is preferably more than 45 degrees (for example, 60 degrees or more).

[0066] The first extension portions 41, 141 of the radiating elements 17, 18 preferably extend from the connection points 25, 26 in a direction perpendicular to the longitudinal direction of the belt body 110, but may be formed so that at least a portion of the extension portions extends in a direction intersecting the longitudinal direction of the belt body 110. It is desirable that the first extension portions 41, 141 extend in a direction intersecting the longitudinal direction of the belt body 110 over their entire length. The first extension portions 41, 141 may be inclined with respect to the longitudinal direction of the belt body 110. The inclination angle of the first extension portions 41, 141 with respect to the longitudinal direction of the belt body 110 is preferably more than 45 degrees (for example, 60 degrees or more).

[0067] The RFID tag 10 is arranged so that the average extension direction of the radiating elements 17, 18 intersects with the short side direction of the belt body 110. The average extension direction of the radiating elements 17, 18 is preferably along the longitudinal direction of the belt body 110. The average extension direction of the radiating elements 17, 18 is preferably perpendicular to the short side direction of the belt body 110, but may be inclined with respect to the short side direction of the belt body 110. The inclination angle of the average extension direction of the radiating elements 17, 18 with respect to the short side direction of the belt body 110 is preferably more than 45 degrees (for example, 60 degrees or more).

[0068] 6, when a driving pulley 101 of a transmission device 500 is driven, the industrial belt 100 runs between the driving pulley 101 and the driven pulley 102. The industrial belt 100 transmits the driving force (power) of the driving pulley 101 to the driven pulley 102. The industrial belt 100 is a power transmission belt that is wound around the pulleys 101 and 102 to transmit power.

[0069] When the industrial belt 100 runs over the pulleys 101 and 102, it assumes a curved shape that follows the periphery of the pulleys 101 and 102, and therefore a bending force may be applied to the RFID tag 10.

[0070] [Effects of the Industrial Belt of the First Embodiment] In the industrial belt 100, the first extending portions 41, 141 of the radiating elements 17, 18 of the RFID tag 10 are formed in a non-bent shape. Therefore, the first extending portions 41, 141 do not have bent portions where stress concentration is likely to occur due to bending. Therefore, when the industrial belt 100 is bent, it is possible to suppress the application of localized force to the radiating elements 17, 18. Therefore, the radiating elements 17, 18 are unlikely to be damaged.

[0071] The first extension parts 41, 141 of the RFID tag 10 extend from the connection parts 25, 26 in the short direction of the belt body 110 (the direction intersecting the longitudinal direction of the belt body 110). Therefore, when the industrial belt 100 is bent, the bending force is unlikely to act on the radiating elements 17, 18.

[0072] The RFID tag 10 is arranged so that the average extension direction of the second extension parts 42, 142 is aligned with the longitudinal direction of the belt body 110. Therefore, there are few restrictions on the length of the radiating elements 17, 18. In the RFID tag 10, the communication performance can be improved by forming the radiating elements 17, 18 long. For example, the communication distance can be increased.

[0073] Since the first extending portions 41, 141 are linear, even if the industrial belt 100 is bent, localized force applied to the radiating elements 17, 18 can be suppressed.

[0074] Since the first extension portions 41, 141 are formed so as to extend from the connection points 25, 26 in the short direction of the belt body 110 (in a direction perpendicular to the longitudinal direction of the belt body 110), when the industrial belt 100 is bent, localized force applied to the radiating elements 17, 18 can be suppressed.

[0075] The second extending portion 42, 142 has a meandering shape having a plurality of straight portions 31, 131 and a plurality of inverted portions 32, 132. The second extending portion 42, 142 can absorb bending forces at the inverted portions 32, 132, and therefore can suppress localized forces from being applied to the radiating elements 17, 18.

[0076] The substrate 11 of the RFID tag 10 is disposed so that its longitudinal direction is aligned with the lateral direction of the belt body 110, and therefore the dimension of the substrate 11 in the belt length direction is small. Therefore, the force applied to the substrate 11 by bending the industrial belt 100 can be suppressed. Therefore, damage to the substrate 11 is unlikely to occur.

[0077] Radiating elements 17 and 18 are formed of linear bodies and therefore have high tensile strength. When industrial belt 100 runs on pulleys 101 and 102, tensile force may be applied to radiating elements 17 and 18 in the belt length direction. However, since radiating elements 17 and 18 have high tensile strength, breakage is unlikely to occur.

[0078] [Industrial belt] (Second embodiment) 9 is a plan view showing the internal structure of an industrial belt 300 according to the second embodiment. Configurations common to other embodiments are given the same reference numerals and descriptions thereof will be omitted.

[0079] 9, an industrial belt 300 includes a belt body 110 and an RFID tag (non-contact data transmitter / receiver) 310. The RFID tag 310 differs from the RFID tag 10 shown in FIG. 2 in that an antenna 312 is used instead of the antenna 12.

[0080] The antenna 312 comprises a first radiating element 317 and a second radiating element 318 . The first radiating element 317 includes a first extending portion 441 and a second extending portion 42. The first extending portion 441 is linear in shape extending in a direction inclined in the X direction and the Y direction from the first connection point 25 in a plan view (the inclination direction shifts toward the +Y direction as it approaches the +X direction).

[0081] The second radiating element 318 includes a first extending portion 541 and a second extending portion 142. The first extending portion 541 is linear in shape extending in a direction inclined in the X direction and the Y direction from the second connection point 26 in a plan view (the inclination direction shifts toward the -Y direction as it approaches the -X direction).

[0082] The first extending portions 441, 541 are not bent and extend from the connection points 25, 26 in a direction intersecting with the longitudinal direction of the belt body 110.

[0083] [Effects of the Industrial Belt of the Second Embodiment] In the industrial belt 300, the first extending portions 441, 541 of the RFID tag 310 are formed in a non-bending shape. Therefore, when the industrial belt 300 is bent, it is possible to suppress localized force from being applied to the radiating elements 317, 318. Therefore, the radiating elements 317, 318 are unlikely to be damaged.

[0084] In the industrial belt 300, the first extending portions 441, 541 of the RFID tag 310 are formed in a direction inclined in the X direction and the Y direction in a plan view. Therefore, even when the industrial belt 300 is bent in the length direction and when a compressive force is applied to the industrial belt 300 in the width direction, the radiating elements 317, 318 are unlikely to be damaged.

[0085] [Industrial belt] (Third embodiment) 10 is a plan view showing the internal structure of an industrial belt 400 according to the third embodiment. Configurations common to other embodiments are given the same reference numerals and descriptions thereof will be omitted.

[0086] 10, an industrial belt 400 includes a belt body 110 and an RFID tag (non-contact data transmitter / receiver) 410. The RFID tag 410 differs from the RFID tag 10 shown in FIG. 2 in that an antenna 412 is used instead of the antenna 12.

[0087] The antenna 412 comprises a first radiating element 417 and a second radiating element 418 . The first radiating element 417 includes a first extending portion 441 and a second extending portion 442. The second extending portion 442 includes a plurality of straight portions 431 and a plurality of inverted portions 32. The straight portions 431 are inclined with respect to the X direction and the Y direction. The inclination directions of adjacent straight portions 431 are different. The average extending direction of the second extending portions 442 is the +X direction.

[0088] The second radiating element 418 includes a first extending portion 541 and a second extending portion 542. The second extending portion 542 includes a plurality of straight portions 531 and a plurality of inverted portions 132. The straight portions 531 are inclined with respect to the X direction and the Y direction. The inclination directions of adjacent straight portions 531 are different. The average extending direction of the second extending portions 542 is the -X direction.

[0089] [Effects of the Industrial Belt of the Third Embodiment] In the industrial belt 400, the first extending portions 441, 541 of the RFID tag 410 are formed in a non-bending shape. Therefore, when the industrial belt 400 is bent, it is possible to suppress localized force from being applied to the radiating elements 417, 418. Therefore, the radiating elements 417, 418 are unlikely to be damaged.

[0090] In the industrial belt 400, the first extending portions 441, 541 of the RFID tag 410 are formed in a direction inclined in the X direction and the Y direction in a plan view. Therefore, even when the industrial belt 400 is bent in the length direction and when a compressive force is applied to the industrial belt 400 in the width direction, the radiating elements 417, 418 are unlikely to be damaged.

[0091] In the industrial belt 400, the straight portions 431, 531 of the radiating elements 417, 418 are inclined, so that it is possible to obtain transmission and reception characteristics different from those of the RFID tags used in the industrial belts of the other embodiments.

[0092] [Radiating element] (variation) FIG. 11 is a plan view showing a main body of a radiating element 717 which is a modified example of the radiating element. As shown in Fig. 11, the second extension portion of the radiating element 717 has a meandering shape. The second extension portion of the radiating element 717 includes a plurality of linear straight portions 31 and a plurality of inverted portions 732. The linear portions 31 are linear along the Y direction. The inverted portions 732 alternately connect one end and the other end of adjacent linear portions 31. The inverted portions 732 have a curved shape (for example, a circular arc shape or an elliptical arc shape).

[0093] The radiating element 717 is easier to manufacture than a radiating element having a wound portion, and is lighter than a radiating element having a wound portion.

[0094] Although the embodiments of the present invention have been described above, each configuration and their combinations in the embodiments are merely examples, and addition, omission, substitution, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiments.

[0095] As shown in Fig. 3, the substrate 11 of the RFID tag 10 is rectangular, but the shape of the substrate is not limited to a rectangle. Two directions (first direction and second direction) along the first main surface of the substrate are assumed. The first direction and the second direction are perpendicular to each other. The substrate may have different dimensions in the first direction and the second direction. The planar shape of the substrate may be, for example, an ellipse, an oval, a rounded rectangle, a polygon, or the like.

[0096] Although RFID tag 10 comprises substrate 11, IC chip 13, circuitry 16, and antenna 12, an RFID tag may comprise a substrate, an IC chip, and an antenna, in which case the antenna is directly connected to the IC chip. The second extending portion 42, 142 has a serpentine shape having a plurality of straight portions 31, 131 and a plurality of inverted portions 32, 132, but the second extending portion may have a shape that does not include straight portions.

[0097] In the first embodiment, the toothed belt 200 is exemplified as the industrial belt 100 used as a power transmission belt (see Figs. 7 and 8), but the industrial belt of the embodiment may be a friction power transmission belt that transmits power by friction between itself and a pulley. Examples of the friction power transmission belt include a V-belt, a V-ribbed belt, and a flat belt.

[0098] A V-belt is a friction transmission belt whose cross section perpendicular to the belt length direction has a trapezoidal shape that narrows from the outer peripheral surface side to the inner peripheral surface side. The V-belt may have a plurality of protrusions protruding inward. The plurality of protrusions are provided at a constant pitch in the belt length direction. A recess is formed between adjacent protrusions. The protrusions may be formed to extend in the belt width direction, or may be formed to extend obliquely with respect to the belt width direction.

[0099] The V-ribbed belt has one or more ridges that protrude inward and are formed along the length of the belt, and have, for example, a generally trapezoidal cross section perpendicular to the length of the belt. The flat belt is a frictional power transmission belt having a generally rectangular shape in a cross section perpendicular to the belt length direction, the width of which is greater than the thickness.

[0100] The industrial belt of the embodiment may be a double-cogged belt. The double-cogged belt has protrusions on the inner circumferential surface side that protrude inward and are provided at a constant pitch in the belt length direction. The double-cogged belt has protrusions on the outer circumferential surface side that protrude outward and are provided at a constant pitch in the belt length direction.

[0101] The industrial belt of the embodiment may be a serpentine belt. The serpentine belt has a plurality of protrusions on the inner peripheral surface thereof, which protrude inward and are provided at a constant pitch in the belt length direction. The serpentine belt has one or a plurality of protrusions on the outer peripheral surface thereof, which protrude outward and are formed along the belt length direction.

[0102] The industrial belt of the embodiment is not limited to a power transmission belt, and may be a conveyor belt for conveying an article. The industrial belt of the embodiment is preferably used as a power transmission belt or a conveyor belt, but is not particularly limited to the application. [Explanation of symbols]

[0103] 10,310,410...RFID tag (non-contact data transmitter / receiver), 11...substrate, 12,312,412...antenna, 13...IC chip, 16...matching circuit (circuit), 17,317,417...first radiating element (radiating element), 18,318,418...second radiating element (radiating element), 25...first connection point (connection point), 26...second connection point (connection point), 41,141,441,541...first extension portion, 42,142,442,542...second extension portion, 100,300,400...industrial belt, 101...driving pulley (rotating body), 102...driven pulley (rotating body), 110...belt body

Claims

1. An industrial belt that is wound around a rotating body, A non-contact data transmitter / receiver and a flexible belt body on which the non-contact data transmitter / receiver is installed, The non-contact data transmitter / receiver is A plate-shaped substrate; An IC chip provided on the substrate; a circuit provided on the substrate and electrically connected to the IC chip; an antenna having a pair of radiating elements electrically connected to the circuit at a connection point; the base material is disposed such that a longitudinal direction thereof intersects with a longitudinal direction of the belt body in a plan view, The radiating element is a first extension portion at least a portion of which extends from the connection point in a direction intersecting with a longitudinal direction of the belt body; A second extension portion extending from a tip of the first extension portion with an average extension direction being the longitudinal direction of the belt main body, The first extension portion has a non-bent shape. Industrial belt.

2. The first extension portion is linear.

2. The industrial belt according to claim 1.

3. The first extension portion extends from the connection point in a direction perpendicular to the longitudinal direction of the belt body.

3. The industrial belt according to claim 2.

4. The second extension portion has a plurality of main portions arranged at intervals in the longitudinal direction of the belt body, and a plurality of inversion portions alternately connecting one ends and the other ends of adjacent main portions.

2. The industrial belt according to claim 1.

5. 2. The industrial belt according to claim 1, which is a power transmission belt that is wrapped around a rotating body to transmit power.

6. 2. The industrial belt according to claim 1, which is a conveyor belt for conveying articles.

Images