JP2008105544A - Tire and electromagnetic wave feeding system with same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire enabling feeding of power required for driving a detection device detecting air pressure and temperature in the tire from outside thereof. <P>SOLUTION: A plurality of independent circular closed loop conductive foils with prescribed line width are provided in the inner side surface of the tire 50 without a metal mesh or metal wire attached to a wheel 43. An electromagnetic wave feeding system is provided with an external antenna 80 outside the tire 50, an internal antenna 77 inside the tire 50, and a power source means. The external antenna 80 radiates a high frequency magnetic field to the tire 50 to make the conductive foils generate an induced alternating current. The internal antenna 77 receives the high frequency magnetic field generated by the induced alternating current generated in the conductive foils 53, and outputs a reception signal. The power source means is attached to the inside of the tire 50, and it rectifies the reception signal into direct-current electric power and feeds driving power to the detection device 70 detecting a prescribed condition in the tire 50. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In view of the negative impact on the environment, the present invention is easily remodeled in preparation for the appearance of tires that do not have metal mesh or metal wires in order to make it easier to handle old tires. Similar to a tire having a wire, a tire that is attached to the tire and that can supply power necessary for driving a detection device that detects a physical quantity such as air pressure and temperature in the tire from the outside of the tire and the tire In particular, the present invention relates to a technique for improving high-frequency characteristics of a tire having no metal mesh or metal wire.

  Conventionally, as a technique related to a tire condition detection system provided with a detection device that detects the air pressure and temperature in a tire, for example, there are those described in the following documents.

JP-A-10-104103 JP 2003-237328 A JP 2003-291615 A JP 2004-161113 A

  Patent Document 1 describes a technology of a tire pressure monitoring device that is composed of a central reception evaluation device installed in a vehicle and is used for a vehicle having a plurality of wheels.

  Patent Documents 2 and 4 describe techniques related to a wireless tire condition monitoring device that can confirm a tire condition such as tire air pressure from the passenger compartment.

  Patent Document 3 describes a technique of a tire air pressure detection device that detects a tire state such as tire air pressure and temperature and transmits the tire state as a radio signal.

  In general, since the reversibility theorem holds for all antennas, the transmission characteristics and reception characteristics are exactly the same, so the following description is for all transmissions unless otherwise noted. The description is omitted because it is similar.

  In recent years, the miniaturization of computers and the one-chip implementation have made possible the development of vehicles such as automobiles. Computers are responsible for the various communication devices equipped in automobiles, the engine control mechanism, the safe driving mechanism that assists the driver (driver), etc., and the performance of automobiles continues to evolve. is the current situation. Among them, it seems that general users other than experts are not so aware that the role of the wheel that supports and moves the vehicle body is also very important.

  Previously, it was common for automobile wheels to consist of wheels, air tubes and tires, but since the development of tubeless tires, most passenger cars, except large ones, used tubeless tires. Therefore, the wheel of a passenger car is configured by a wheel and a tubeless tire (this tubeless tire is simply referred to as “tire” hereinafter). With the absence of air tubes, tire punctures often burst (bust) rather than gradually leaking air as before, leading to serious traffic accidents.

  It is well known that the tire air pressure and the fuel consumption of the engine are closely related, and that the fuel efficiency is high when the vehicle is driven at the optimum tire pressure, and that the mileage is extended even with the same amount of fuel. That is why the tire pressure is also checked when fuel is filled at the gas station.

  On the other hand, even if the tire pressure reaches the optimum value during normal operation, if the car is driven at high speed for a long time, the air in the tire moves violently and the tire also rotates while deforming, so a lot of heat is generated and the tire The internal temperature may rise to around 150 ° C. As a result, although the air pressure in the tire should have been an optimal pressure, the air pressure in the tire increases due to the generated heat, and the tire may burst.

  Therefore, as described in Patent Documents 1 to 4 and the like, a tire condition detection system that detects tire air pressure and temperature has been developed. Currently, in the United States, all new models are equipped with a tire condition detection system. Mandatory.

  4 (A) and 4 (B) are explanatory views of a conventional tire condition detection system, and FIG. 4 (A) is an external view showing a wheel structure and an antenna system of an automobile equipped with the conventional tire condition detection system. FIG. 5B is a view showing a cross section of the wheel and an external antenna provided with a detection device for detecting the air pressure and temperature in the tire in the tire condition detection system of FIG.

  As shown in FIG. 4A, the vehicle body of the automobile is provided with a wheel rotation shaft 1 for the front wheel and a wheel rotation shaft 2 for the rear wheel. A wheel 3 is attached to each of the wheel rotation shafts 1 and 2. The tires 10 are respectively attached to the tires 10. Each wheel 3 to which each tire 10 is attached is provided with a valve 20 having an air inlet / outlet, and a small detection device 21 is accommodated in each valve 20. The detection device 21 includes a sensor that detects the air pressure and temperature in the tire 10, a control circuit that controls the entire device, an internal antenna that transmits and receives electromagnetic waves R, a dry cell type button battery for driving the device, and the like.

  An external antenna 30 for transmitting and receiving data and instructions from the internal antenna in each valve 20 is attached to the vehicle body. The external antenna 30 is connected to a reader / writer (hereinafter referred to as “R / W”) 32 via a transmission line 31 formed of a coaxial cable. The R / W 32 is a device that is driven by a high-frequency power supplied from a high-frequency power source 33 and processes all data for the detection device 21 in each valve 20, and a display device 34 is connected to the R / W 32. The display device 34 is a device that is set in the passenger compartment and displays physical state information regarding the tire 10 sent from the R / W 32 to the driver.

  As shown in FIG. 4B, the valve 20 in which the detection device 21 is housed is attached to the wheel 3, and a ring-shaped tire 10 is detachably attached to the outer peripheral surface of the wheel 3. A reinforcing member 13 made of a metal wire or a metal mesh formed of a still material or the like is embedded in the tire 10 to increase the strength. When an electromagnetic wave R that transmits air pressure and temperature data in the tire 10 is radiated from the internal antenna of the detection device 21 provided in the valve 20, this is received by the external antenna 30, and this received signal is R / W 32. The air pressure and temperature values in the tire 10 are displayed on the display device 34.

  Therefore, the driver can know the air pressure and temperature in the tire 10 while sitting in the driver's seat or driving. Since the bust of the tire 10 is caused by the air pressure and temperature in the tire, if the driver takes measures when the tire 10 is in a dangerous state, the tire rupture and traffic accident can be avoided in advance.

FIG. 5 is an explanatory diagram of the structure of the tire 10 in FIG.
The tire 10 includes a tire main body 11 formed of a ring-shaped rubber portion, and a hook portion 12 that is hooked when the tire 10 is attached to the wheel 3 is formed inside the tire main body 11. A reinforcing member 13 made of a metal wire or a metal mesh formed of a still material or the like is embedded in the tire body 11 to increase the strength. If the cross section 13a of the reinforcing member 13 is not cut, a loop-shaped wire as shown in FIG. 5 is seen. Although there are various ways of arranging the reinforcing member 13 depending on the tire manufacturer, FIG. 5 shows the simplest arrangement.

  However, the tire condition detection system provided with the conventional detection device 21 has the following problems.

  The power source of the detection device 21 that detects the air pressure and temperature in the conventional tire is a dry cell type button battery, and according to the specifications of the commercially available detection device 21, power is to be supplied to the device for more than 10 years. . However, as long as it is a battery, it will eventually run out and need to be replaced.

  The battery replacement time can be known from the battery voltage included in the transmission data from the detection device 21, but it takes much more time for replacement than the battery price.

  Therefore, it is conceivable to provide a power supply unit for receiving high-frequency power in the detection device 21 housed in the valve 20 instead of the dry cell type button battery. In this configuration, a high-frequency magnetic field is radiated from the external antenna 30, received by the internal antenna of the detection device 21 in the valve 20, and the received signal is rectified to DC power by the power supply unit to be a circuit in the detection device 21. Supply. As a result, it is possible to realize an electromagnetic wave power feeding system using the battery-less detection device 21.

  However, since the external antenna 30 and the internal antenna in the bulb 20 are displaced in position due to the rotation of the tire 10, it is difficult to stably supply electromagnetic waves from the outside. In particular, the reinforcing member 13 made of a metal mesh or metal wire embedded in the tire 10 is a harmful effect when the old tire 10 is reused. Development of a tire made of a rubber member having strength, or a tire that does not use the reinforcing member 13 but has a small amount of metal member (this tire is referred to as a “metal-free tire” in the present specification) is underway. In the future, when such a metal-free tire is put into practical use, it is expected that it will become more and more difficult to mount the battery-less detection device 21 on the tire side and to stably supply electromagnetic waves from the outside. .

  An object of the present invention is to provide a tire capable of stable electromagnetic power feeding and an electromagnetic power feeding system using the tire.

  In the tire of the present invention, one or a plurality of independent circular closed-loop conductors having a predetermined line width are provided at predetermined positions on a part or the entire inner surface of the tire main body along the rotation direction of the tire main body. ing.

  The electromagnetic wave power feeding system of the present invention includes the tire mounted on a wheel, an external antenna attached near the outside of the tire, and radiating a high frequency magnetic field to the tire to generate an inductive alternating current in the conductor. An internal antenna that is disposed in a space between the tire and the wheel, receives a high-frequency magnetic field generated by the inductive alternating current generated in the conductor in the space, and outputs a reception signal; and is attached to the inside of the tire And power supply means for rectifying the received signal into DC power and supplying driving power to a detection device for detecting a predetermined state in the tire.

  According to the tire of the present invention and the electromagnetic wave power feeding system using the tire, since the circular circular loop conductor is provided in the tire body, the battery such as a vehicle or the like can be used without worrying about the life of the battery as a power source or the residual power. Using power from the engine or the like, a high frequency magnetic field of a specific frequency is applied to the power supply means, and the detection device is driven by the power supply rectified by the power supply means so that the tire pressure, temperature, etc. can always be detected accurately. Become.

  Also, when the tires are aged and discarded, unlike the conventional tires with metal mesh and metal wires, the rubber and conductor are easily separated by peeling off the circular closed loop conductor provided inside the tire body. can do. As a result, the old tire becomes a raw material of high-purity rubber, and the reuse rate is improved. Therefore, not only does it not cause environmental pollution as in the case of conventional tire processing, but it can also be expected to improve the reuse rate and reduce the tire price.

  In the tire, one or a plurality of independent circular closed-loop conductors having a predetermined line width are provided at predetermined positions on a part or the entire inner surface of the tire body. The conductor is made of, for example, a conductor foil formed of a metal material or conductive fiber, and is bonded to the inner surface of the tire body.

(Configuration of Example 1)
1A and 1B are explanatory views of an electromagnetic wave power feeding system in a tire condition detection system showing a first embodiment of the present invention. FIG. 1A is a wheel structure of an automobile equipped with a tire condition detection system. FIG. 2B is a diagram showing a cross section of a wheel provided with the electromagnetic wave feeding system in FIG. 1A and an external antenna. FIG. 2 is an enlarged cross-sectional view of the tire in FIG.

  In FIG. 1 (A), the automobile body is omitted for easy viewing, as in FIG. 4 (A). The vehicle body is provided with a wheel rotation shaft 41 for a front wheel and a wheel rotation shaft 42 for a rear wheel, as in FIG. 4A, and a wheel 43 is attached to each wheel rotation shaft 41, 42. Tires 50 made of metal-free tires are respectively mounted through the tires. A valve 60 having an air inlet / outlet is attached to each wheel 43 to which each tire 50 is mounted, and a small tag-like detection device for detecting air pressure and temperature in the tire is provided in each valve 60. 70 are respectively accommodated.

  Unlike the conventional case, a solenoid-like external antenna 80 having a number of turns of several turns is attached to the vehicle body near the side surface of each tire 50. Each external antenna 80 generates a high-frequency magnetic field H by excitation and receives it by an internal antenna 77 formed of a loop-shaped induction antenna attached to each valve 60, and the air pressure and temperature in the tire from the internal antenna 77. It has a function to receive data. Each external antenna 80 is connected to a transceiver 91 via a transmission path 90 such as a coaxial cable. The transmitter / receiver 91 functions as a power transmitter that transmits power to each external antenna 80 based on the high-frequency power supplied from the high-frequency power source 92, and transmission transmitted from each tire side via each external antenna 80. It has a function as a receiver which receives a signal, and the display apparatus 93 is connected to this. The display device 93 is a device that is set in the passenger compartment and displays physical state information regarding the tire 50 sent from the transceiver 91 to the driver.

  As shown in FIG. 2, the tire 50 includes a tire main body 51 formed of a ring-shaped rubber portion, and a hook portion 52 that is hooked when the tire 50 is attached to the wheel 43 is formed inside the tire main body 51. ing. A circular closed-loop conductor (for example, a plurality of circular closed-loop conductor foils made of copper foil or the like) 53 having a certain width and thickness is attached to the inner surface of the tire body 51 with a rubber adhesive or the like. The circular closed loop conductive foil 53 is ideally attached at equal intervals in consideration of the fact that the tire 50 rotates at a high speed. However, considering that power is supplied to the valve 60 with electromagnetic waves, It is better that the number of the circular closed-loop conductor foils 53 is close to 60. Accordingly, it is desirable that the width and interval of the circular closed-loop conductor foil 53 near the bulb 60 be slightly narrowed, and that the width and interval of the circular closed-loop conductor foil 53 be slightly increased away from the bulb 60.

  As shown in FIG. 1 (B), the external antenna 80 installed in the vicinity of each tire 50 has a resistance and an inductance. Therefore, the external antenna 80 is configured with a capacitor in order to receive high-frequency power from the high-frequency power source 92 more efficiently. A matching circuit is required. FIG. 1B shows a schematic diagram of an external antenna 80 combined with a matching circuit. Two matching capacitors 81 and 82 are connected to the external antenna 80, and a matching circuit between the external antenna 80 and the high-frequency power source 92 is configured by the matching capacitors 81 and 82.

  The external antenna 80 generates a high-frequency magnetic field H around it, but in the first embodiment, an electromotive force is generated inductively on the internal antenna 77 attached to the valve 60 using the energy of the magnetic field component, and this is generated in the tire. It is used as a power source of the detecting device 70 for detecting the air pressure and temperature of the air.

  The valve 60 in which the detection device 70 is accommodated is attached to a wheel 43 as in the conventional case, and a ring-shaped tire 50 is detachably attached to the outer peripheral surface of the wheel 43. A plurality of circular closed loop conductor foils 53 are attached to the inner surface of the tire body 51. The circular closed loop conductive foil 53 becomes an obstacle to a certain frequency band, but helps to propagate by inducing electromagnetic waves to a certain frequency band. In the first embodiment, for example, an electromagnetic wave of 13.56 MHz is handled, but actually, the electromagnetic wave induction phenomenon can be observed from about 5 MHz to about 50 MHz.

  Although FIG. 1B does not show a cross-sectional view of the lower half of the wheel, it is the same as the cross-sectional view of the upper half excluding the valve 60. Further, due to the induction phenomenon of the plurality of circular closed loop conductive foils 53 affixed in the tire body 51, a substantially uniform high frequency magnetic field H is distributed in the space between the tire 50 and the wheel 43. The amount of coupling with the internal antenna 77 in the tire (S21 in terms of S parameter) is between approximately −10 dB and −20 dB.

  The value of the coupling amount S21 indicates the transmission / reception level of the magnetic energy between the internal antenna 77 and the external antenna 80 in the tire. The higher the coupling amount S21, the more the signal can be transmitted / received under a desired condition with less magnetic energy.

Also, according to Faraday's electromagnetic induction law, if the magnetic field of the magnetic flux Φ passes through the loop-shaped conductor and changes with time, an electromotive force E is generated so as to weaken the amount of change in the magnetic flux, and the loop-shaped conductor A current that generates a magnetic field flows in a direction opposite to the magnetic field. The electromotive force E is expressed by the following equation (1).
E = −dΦ / dt (1)

  In this equation (1), Φ is a magnetic flux that is equal to the product of the magnetic permeability μ in the internal antenna 77, the area of the loop, and the strength of the high-frequency magnetic field H, and passes through the antenna. The first embodiment mainly uses this phenomenon.

  The direction of the high-frequency magnetic field H generated by the external antenna 80 installed in the vicinity of the tire 50 is substantially parallel to the rotation axis of the tire 50, and the maximum induction occurs if the impedance of the internal antenna 77 provided in the tire is well matched. Electric power can be obtained.

FIG. 3 is a diagram showing an internal configuration of the valve 60 in FIG.
The valve 60 has a case-like valve main body 61 whose back side is open, and a cylindrical air inlet / outlet port 62 projects from a side surface of the valve main body 61. The air inlet / outlet port 62 is made of a sturdy metal such as aluminum alloy or still, and the other valve body 61 is made of resin or the like. A detection device 70 is accommodated in the valve body 61, and the opening on the back side of the valve body 61 is closed by a back cover.

  The detection device 70 includes a circuit element mounting substrate 71 in the valve main body 61 and an internal antenna 77 drawn out of the valve main body. On the board 71, an air pressure sensor 72, a temperature sensor 73, an electronic circuit 74, and a power supply means (for example, a power supply unit) 75 are mounted and connected to an internal antenna 77 via a transmission path 76 such as an electric wire. The electronic circuit 74 has a control function for controlling the entire apparatus, a transmission / reception function, and the like. A reception signal received by the internal antenna 77 is rectified to DC power by the power supply unit 75 and converted to drive power, and then supplied to each circuit portion.

  The internal antenna 77 is a solenoid antenna made of, for example, about 10 turns of copper wire, and receives a high frequency magnetic field by induced electromotive force generated by electromagnetic induction of the high frequency magnetic field H radiated from the external antenna 80. The internal antenna 77 is arranged so that the surface of the loop is perpendicular to the high frequency magnetic field H in order to obtain the maximum induced electromotive force.

  Usually, when a matching circuit is provided between the internal antenna 77 and the circuit element mounting board 71, reflection loss between the two is suppressed, and a high-frequency signal can be transmitted efficiently. The matching circuit includes one parallel capacitor and one series capacitor, but is not shown in FIG.

(Reason for not using the conventional tire 10 as shown in FIG. 5)
As shown in FIG. 5, in all conventional tires 10, except for special ones, a reinforcing member 13 made of a metal mesh or a metal wire is placed in the tire body 11 in order to increase the strength. For example, when the electromagnetic wave power feeding system of FIG. 1 is applied using such a tire 10, the external antenna 80 and the internal antenna 77 in the tire 10 are used for a specific frequency because of the reinforcing member 13. It was confirmed experimentally that the power supply energy by the electromagnetic wave from the outside is almost stable even if the position is shifted due to the rotation of the tire 10.

  Conventionally, the tire 10 that has been used and used has a reinforcing member 13 made of a metal mesh or a metal wire, so that it is difficult to reuse it, and there is only a method of leaving it alone or burning it. However, the environmental pollution problem is spreading on a global scale, and it can be imagined that incineration methods that require large amounts of oxygen or methods that leave them will definitely not be allowed in the near future.

  A tire manufacturer who anticipates this has started to develop a tire that does not use the reinforcing member 13 made of a metal mesh or a metal wire while maintaining the tire strength. Without a metal mesh or metal wire, the recovery and reuse rate of old tire rubber can be improved, and the conventional processing method that adversely affects the environment can be avoided. In recent years, in order to increase the strength of the tire 10 as in the prior art, a rubber material having sufficient strength has been developed without putting the reinforcing member 13 made of a metal mesh or metal wire into the tire body 11 and put into practical use in the near future. It's time to do it. However, in some cases, the metal wire may not be completely removed at the circular edge of the tire 10 connected to the wheel 3 (that is, the hook portion 12). This is because this portion is extended with a strong force when the tire 10 is attached to and detached from the wheel 3 and must be restored to its original dimensions later. Therefore, even if a wire is left only in the hook portion 12 of the tire body 11 connected to the wheel 3, the near future tire has almost no metal mesh or metal wire compared to the conventional tire, and a small amount of metal tire or no metal. You can call it a tire. In the present specification, such a tire is referred to as a “metal-free tire”.

  However, as described above, since there are metal meshes and metal wires, even if the external antenna 80 and the internal antenna 77 are displaced in position due to the rotation of the tire 10 with respect to a specific frequency, power is supplied by electromagnetic waves from the outside. The energy is almost stable. In other words, it means that electromagnetic power feeding from the outside cannot be stably performed on a metal-free tire having no metal mesh or metal wire. If a model of a metal-free tire without a metal mesh or metal wire is created and the positions of the external antenna 80 and the internal antenna 77 are shifted due to the rotation of the metal-free tire, there is a problem that power supply by external electromagnetic waves cannot be realized. I found out.

(Characteristics of Example 1)
The present embodiment 1 solves the above-mentioned problems, and even in the case of the tire 50 as shown in FIG. 2 that does not have a metal mesh or metal wire, an electromagnetic wave is generated between the external antenna 80 and the internal antenna 77 in the tire. It is an object of the present invention to provide a stable electromagnetic power feeding system regardless of the positional deviation between the antennas 80 and 77 caused by the rotation of the tire 50.

  In the first embodiment, for example, when a tire 50 that does not have a metal component such as a metal mesh or a metal wire is used, the detection device 70 that detects battery-less tire pressure and temperature is not capable of supplying power using electromagnetic waves. Since it becomes stable, it becomes difficult to obtain detailed data of tire pressure and temperature. However, the principle of power supply by electromagnetic waves uses electromagnetic induction of the reinforcing member 13 made of a metal mesh or metal wire embedded in the tire body 11 so that the power supply electromagnetic waves spread in the space between the tire 50 and the wheel 43. If a substitute for the same function as the reinforcing member 13 can be provided, the detection device 70 for detecting battery-less tire pressure and temperature should stably receive power supply from the outside by electromagnetic waves and operate similarly. is there.

  Therefore, in the first embodiment, a circular closed loop conductor foil 53 that has the same function as the reinforcing member 13 embedded in the tire 10 is stuck in the tire body 51.

(Operation of Example 1)
In FIG. 1A, for example, a high frequency power in a 13 MHz band of several W (watts) is transmitted from a high frequency power source 92 to a transmitter / receiver 91, and the high frequency power is distributed to necessary power there and a transmission line 90. Power is supplied to each external antenna 80 through.

  As shown in FIG. 1B, each external antenna 80 includes a matching circuit made up of capacitors 81 and 82, and thus efficiently radiates high frequency power fed from the transceiver 91 as electromagnetic waves. Since it is structured, a high frequency magnetic field H is radiated in the axial direction. The high frequency magnetic field H is perpendicular to the side surface of the tire 50. Therefore, also in the tire 50 of FIG. 2, the high-frequency magnetic field H radiated from the external antenna 80 is perpendicular to the great circle of the circular closed-loop conductor foil 53 and generates a magnetic flux Φ in each circular closed-loop conductor foil 53. Since the magnetic flux Φ is generated by the high-frequency magnetic field H, it changes with time, and an electromotive force E is generated in each circular closed-loop conductor foil 53 in accordance with Faraday's electromagnetic induction law shown in the equation (1). An alternating current flows through the closed loop conductor foil 53. By this alternating current, a high frequency magnetic field H is generated not only within the great circle of each circular closed loop conductor foil 53 but also outside the great circle near each circular closed loop conductor foil 53.

  Since the high frequency magnetic field H is generated at a location far from the external antenna 80 that is the source of the high frequency magnetic field H, each circular closed loop can be used even if the valve 60 moves away from or approaches the external antenna 80 due to the rotation of the tire 50. As long as it is within the great circle of the conductor foil 53, it is possible to always receive almost stable radiation of the high-frequency magnetic field H, which is generally a so-called induction phenomenon. Further, the stability of the magnetic flux received by the loop-shaped internal antenna 77 may be slightly different depending on the number, width, interval, and arrangement distribution of each circular closed-loop conductor foil 53. Since the magnetic flux received by the internal antenna 77 is an alternating magnetic flux, an electromotive force E is generated in the internal antenna 77 according to the equation (1), the air pressure sensor 72 of the detection device 70 built in the valve 60, the temperature sensor 73, and these sensors 72. , 73 is a power source for the electronic circuit 74 that drives and controls the motor.

  The information obtained by the air pressure sensor 72 and the temperature sensor 73 is the same 13 MHz band signal, sent back to the transmitter / receiver 91 in FIG. 1 (A) through the same power supply path, processed by the transmitter / receiver 91, and displayed on the display device 93. Display and provide information in the tire to the driver.

(Effect of Example 1)
If there is no circular closed-loop conductor foil 53 and the tire 50 is made of rubber only, the internal antenna 77 only occurs when the valve 60 comes to a limited area of the external antenna 80 due to the rotation of the tire 50. Electric power E is generated, and it becomes possible to operate the air pressure sensor 72, the temperature sensor 73 of the detecting device 70 built in the valve 60, and the electronic circuit 74 that drives and controls these sensors 72 and 73. Therefore, with the introduction of the circular closed loop conductor foil 53, even if the tire 50 is made of only rubber, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire maintains the same performance and can be used.

  Also, when the tire 50 is aged and discarded, the circular closed loop conductor foil 53 attached to the inner surface of the tire body 51 can be peeled off, unlike the conventional tire 10 having a metal mesh or metal wire. Can easily separate rubber and metal. As a result, the old tire becomes a raw material of high-purity rubber, and the reuse rate becomes high.

  Therefore, Example 1 not only does not cause environmental pollution like the processing of the conventional tire 10, but also improves the reuse rate and contributes to lowering the price of the tire 50.

(Usage form of Example 1)
The utilization form of the tire 50 of the first embodiment is exactly the same as that of the conventional tire 10 having the reinforcing member 13 made of a metal mesh or a metal wire. However, when mounted on the wheel 43, if the distribution of the circular closed loop conductor foil 53 affixed to the inner surface of the tire body 51 is not uniform, a detection device for detecting the air pressure and temperature in the batteryless or electromagnetically fed tire It is necessary to pay attention to the mounting work in accordance with the instructions so that the maximum power can be supplied to 70.

  Example 1 corresponds to a detection device 70 that detects the air pressure and temperature in a battery-less or electromagnetically fed tire by attaching a plurality of circular closed-loop conductor foils 53 to the inner surface of a tire body 51 that does not have a metal mesh or metal wire. It was possible.

  In contrast, in the second embodiment, the concept is the same, but a plurality of circular closed-loop conductor foils 53 are not attached to the inner surface of the tire body 51 that does not have a metal mesh or metal wire. Instead of the foil 53, a circular closed loop conductor film is formed on the inner surface of the tire body 51. Details will be described below.

(Configuration of Example 2)
FIG. 6 is a cross-sectional view showing the inside of the tire in Example 2 of the present invention.
The tire 100 includes a tire main body 101 formed of a ring-shaped rubber portion, and a hook portion 102 that is hooked when the tire 100 is attached to the wheel 43 is formed inside the tire main body 101. A plurality of circular closed-loop conductor films 103 made of, for example, a silver film or the like are formed on the inner surface of the tire body 101.

The circular closed loop conductive film 103 can be formed by the following method.
For example, a mold having the same dimensions as the inner surface of the tire body 101 that does not have a metal mesh or metal wire is made of cardboard, elastic plastic, or rubber, and a desired circular closed loop pattern is cut out. In order to keep the shape of the mold from collapsing, when cutting out a desired circular closed loop pattern, it is necessary not to cut out the entire pattern but to leave a partial cut. Next, the mold is matched with the inner surface of the tire body 101 and brought into close contact, and then, for example, a conductive paste or conductive paint is applied to the cut out part of the mold with a brush or the like, or a spray of the conductive paint is applied. After spraying and drying to some extent, the mold is removed, and the circular closed-loop conductor film which is not connected by cutting is applied with a brush using the same conductive material to complete the complete circular closed-loop conductor film 103.

  In the second embodiment, since the circular closed loop conductor 103 formed on the inner surface of the tire body 101 is a film, there is no need to worry about the balance due to the high speed rotation of the tire 100. That is, the distribution of the width, interval, and number of the circular closed-loop conductor film 103 may not be uniform.

(Operation of Example 2)
The operation of the second embodiment is exactly the same as the operation of the first embodiment, and thus the description thereof is omitted. However, the thickness of the circular closed loop conductor film 103 is a little smaller than the thickness of the circular closed loop conductor foil 53. Since the conductive paste such as silver paste or conductive paint is used, the resistance is slightly higher than that of the conductive foil. Therefore, the electromotive force that can be generated by the internal antenna 77 in FIG. descend.

(Effect of Example 2)
In Example 2, it takes time to prepare a mold for forming the circular closed-loop conductor film 103 in advance, but the subsequent operation, that is, the formation of the circular closed-loop conductor film 103 can be performed very quickly. Increased efficiency can be expected.

  Also, the metal contained in the circular closed loop conductor film 103 formed on the inner surface of the tire body 101 is a trace amount, which is the same as that of a tire made of only rubber, so it can be used as a raw material for rubber when it becomes old. There is no problem, but if it is absolutely necessary to completely remove the metal contained in the circular closed-loop conductive film 103, the handle is cut with a small cutting machine or the like, and the powdered metal and some rubber are removed with a vacuum cleaner or the like. Just suck up.

  Therefore, although this embodiment 2 sacrifices the electromotive force generated by the internal antenna 77 for a while, it can be said that it is considerably superior to the embodiment 1 from the viewpoint of mass productivity and economy.

(Usage form of Example 2)
The usage mode of the second embodiment is the same as the usage mode of the first embodiment.

  The third embodiment is different from the first and second embodiments in that the reinforcing member is made of a metal mesh or metal wire that can be attached to and detached from the inner surface of the tire body without any modification to a tire having no metal mesh or metal wire. It is characteristic to create a tire insole having Details will be described below.

(Configuration of Example 3)
FIGS. 7A and 7B are cross-sectional views showing the inside of the tire in Example 3 of the present invention. FIG. 7A is a view before the tire insole is mounted in the tire, and FIG. (B) is the figure after mounting a tire insole in a tire.

  The tire 110 according to the third embodiment includes a tire body 111 that does not have a metal mesh or a metal wire, and a tire insole 112 that has the same dimensions as the inner surface and is attached to the inner surface of the tire body 111. Has been. The tire body 111 has a ring-shaped rubber portion 111a, and a hook portion 111b that is hooked when the tire body 111 is mounted on the wheel 43 is formed inside the rubber portion 111a. In the tire insole 112, a conductor (for example, a metal mesh, a metal wire, or a plurality of circular closed loop conductors) 112a is provided.

  The tire insole 112 is preferably an elastic body (for example, an elastic plastic material or rubber material) so that the tire insole 112 can be easily attached to and detached from the tire body 111. Moreover, the shape of the tire insole 112 is made to imitate the inner surface of the tire body 111, and the thickness may be about 5 mm. The tire 110 of the third embodiment in which such a tire insole 112 is mounted on the inner surface of the tire body 111 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, when the tire 110 rotates at a high speed or when the rotation is suddenly stopped, if the rotation speed of the tire insole 112 is not made the same as that of the tire main body 111, there is a possibility of being destroyed by friction or the like. When the tire insole 112 is attached to the tire body 111, it is safe if it is partially adhered to the tire body 111 with an adhesive (for example, a rubber adhesive). However, if too much adhesive is used, the tire 110 becomes old and it is difficult to remove the tire insole 112 from the tire body 111.

(Operation of Example 3)
The basic operation of the third embodiment is the same as that of the first and second embodiments. However, the configuration of the conductor 112a placed in the tire insole 112 (for example, a metal mesh, a metal wire, or a plurality of circular closed loop conductors) ), The electromagnetic characteristics are different, and the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameter) mainly varies considerably.

(Effect of Example 3)
In the third embodiment, if a tire insole 112 having a metal mesh, a metal wire, or the like is created and attached to the inner surface of the tire body 111 that does not have a metal mesh or a metal wire, a conventional metal mesh or metal wire is provided. A tire 110 similar to the tire 10 is obtained, and can be used without remodeling the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire 110 becomes old and needs to be replaced, the tire insole 112 may be removed and attached to the inner surface of the tire body 111 having no new metal mesh or metal wire.

  Since the old tire body 111 is entirely made of rubber, it can be reused as a raw material of rubber, and the tire insole 112 can be reused as it is. Therefore, it can be said that Example 3 not only contributes to the reduction in price and performance of the tire 110 but is also extremely friendly to the environment.

(Usage form of Example 3)
The utilization form of the third embodiment is to improve the electromagnetic characteristics of the tire 110 by attaching a tire insole 112 to the inner surface of the tire body 111 that does not have a metal mesh or metal wire. Obviously, unless the tire insole 112 is attached to the tire main body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire is not able to function sufficiently.

  The fourth embodiment is a modification of the third embodiment and is characterized in that a conductor (for example, a plurality of circular closed-loop conductor foils) is provided on the inner surface of the insole.

(Configuration of Example 4)
FIG. 8 is an enlarged cross-sectional view showing the inside of the tire insole in Example 4 of the present invention.
The tire insole 113 is attached to the inner surface of the tire body 111 of FIG. 7, and a plurality of circular closed-loop conductor foils 113a having a certain width and thickness are provided on the inner surface of the tire insole 113. Affixed with a copper foil rubber adhesive or the like. The circular closed loop conductive foil 113a is ideally attached at equal intervals in consideration of the fact that the tire rotates at high speed. However, considering that the valve 60 shown in FIG. In order to strengthen, it is better that the number of conductor foils is large near the valve 60. Therefore, the width and interval of the conductor foil near the bulb 60 are slightly narrowed, and the width and interval of the conductor foil are slightly thickened away from the bulb 60.

  The tire insole 113 is preferably made of an elastic plastic material or rubber material so that it can be easily attached to and detached from the tire body 111 like the tire insole 112 of the third embodiment. Moreover, the shape of the tire insole 113 of the fourth embodiment is made by imitating the inner surface of the tire body 111 to be used, and the thickness may be about 5 mm. The tire in which the tire insole 113 is mounted on the tire body 111 of FIG. 7 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, when the tire rotates at a high speed or is suddenly stopped, the tire insole 113 of the fourth embodiment may be destroyed by friction or the like unless the rotational speed of the tire insole 113 is the same as that of the tire body 111. Therefore, when it is attached to the tire body 111, it is safe if it is partially adhered with an adhesive (for example, a rubber adhesive). However, if an excessive amount of adhesive is used, the tire becomes old and it is difficult to remove the tire insole 113 of this embodiment from the tire body 111.

(Operation of Example 4)
The basic operation of the fourth embodiment is the same as that of the first embodiment, but the dimensions of the plurality of circular closed-loop conductor foils 113a attached to the inner surface of the tire insole 113 of the fourth embodiment are slightly smaller. As a result, the electromagnetic characteristics are somewhat different, and the value of the amount of coupling between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameters) mainly varies slightly.

(Effect of Example 4)
In Example 4, a tire insole 113 having a plurality of circular closed-loop conductor foils 113a formed on the inner surface is prepared and attached to the inner surface of the tire body 111 having no metal mesh or metal wire as shown in FIG. By doing so, a tire equivalent to the conventional tire 10 having a metal mesh or a metal wire is obtained, and can be used without remodeling the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire becomes old and needs to be replaced, the tire insole 113 may be removed and attached to the inner surface of the new tire body 111.

  Since the old tire body 111 is entirely made of rubber, it can be reused immediately as a raw material for rubber, and the tire insole 113 can be reused as it is. Therefore, the fourth embodiment not only contributes to the reduction in the price and performance of the tire, but also can be said to be extremely friendly to the environment as in the third embodiment.

(Usage form of Example 4)
The usage form of the tire insole 113 of the fourth embodiment is to be mounted on the inner surface of the tire main body 111 having no metal mesh or metal wire as in the third embodiment to improve the electromagnetic characteristics of the tire. . If this is not mounted on the tire main body 111, it is obvious that the conventional detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire is not able to function sufficiently.

  The fifth embodiment is a modification of the third embodiment and is characterized in that a conductor (for example, a plurality of circular closed-loop conductor films) is provided on the inner surface of the tire insole.

(Configuration of Example 5)
FIG. 9 is a cross-sectional view showing the inside of the tire insole in Example 5 of the present invention.
In the fourth embodiment, a plurality of circular closed-loop conductor foils 113a are attached to the inner surface of the tire insole 113 so as to be compatible with a detection device 70 that detects battery-less or electromagnetically-fed tire pressure and temperature. It was. On the other hand, in the fifth embodiment, the concept is the same, but a plurality of circular closed loop conductor foils 113a are not attached to the inner surface of the tire insole 113 as in the fourth embodiment. Instead of 113a, a plurality of circular closed-loop conductor films 114a made of silver film or the like are formed on the inner surface of the tire insole 114.

The circular closed loop conductive film 114a can be formed by the following method.
For example, a mold having the same dimensions as the inner surface of the tire insole 114 is made of cardboard, plastic, rubber, or metal foil, and a desired circular closed loop pattern is cut out. In order to prevent the shape of the mold from collapsing, when cutting out a desired circular closed-loop pattern, it is necessary to cut out part of the pattern instead of cutting it out. Next, after aligning the mold with the inner surface of the tire insole 114 and bringing it into close contact, for example, apply a conductive paste or conductive paint to the cut-out portion of the mold with a brush or spray a conductive paint. After spraying and drying to some extent, the mold is removed, and the circular closed-loop conductor film that is not connected by cutting is applied with a brush using the same conductive material to complete a complete circular closed-loop conductor film 114a.

  In the fifth embodiment, since the circular closed loop conductor formed on the inner surface of the tire insole 114 is a film, there is no need to worry about balance due to high-speed rotation of the tire. That is, the distribution of the width, interval, and number of the circular closed-loop conductor film 114a may not be uniform. Therefore, considering that electric power is supplied to the valve 60 of FIG. 1 by electromagnetic waves, it is better that the number of the circular closed-loop conductor films 114a is closer to the valve 60 in order to increase the magnetic field strength. The width and interval of the closed-loop conductor film are slightly narrowed, and the width and interval of the circular closed-loop conductor film are slightly thickened away from the valve 60.

  The tire insole 114 of the fifth embodiment is preferably made of an elastic plastic or rubber material so that it can be easily attached to and detached from the tire body 111 of FIG. 7 in the same manner as the tire insole 112 of the third embodiment. Moreover, the shape of the tire insole 114 of the fifth embodiment is made by imitating the inner surface of the tire body 111 to be used, and the thickness may be about 5 mm. When the tire insole 114 of Example 5 is mounted on the tire body 111, the tire has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, if the rotation speed of the tire insole 114 of the fifth embodiment is not made the same as that of the tire body 111 when the tire rotates at a high speed or is suddenly stopped, there is a risk of destruction due to friction or the like. Therefore, when it is attached to the tire body 111, it is safe if it is partially adhered with an adhesive (for example, a rubber adhesive). However, if too much adhesive is used, the tire becomes old and it is difficult to remove the tire insole 114 of the fifth embodiment from the tire.

(Operation of Example 5)
The basic operation of the fifth embodiment is the same as that of the second embodiment, but the dimensions of the plurality of circular closed-loop conductor films 114a formed on the inner surface of the tire insole 114 of the fifth embodiment are somewhat smaller. Therefore, the electromagnetic characteristics are also slightly different, and the value of the coupling amount (so-called S21 in terms of S parameter) mainly between the external antenna 80 and the internal antenna 77 is slightly changed.

(Effect of Example 5)
In the fifth embodiment, if a tire insole 114 having a plurality of circular closed loop conductive films 114a on the inner surface is prepared and attached to the inner surface of the tire body 111 that does not have a metal mesh or metal wire, the metal mesh Further, a tire equivalent to a conventional tire having a metal wire can be obtained, and can be used without remodeling the detection device 70 that detects the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire is old and needs to be replaced, the tire insole 114 may be removed and attached to the inner surface of the tire body 111 having no new metal mesh or metal wire.

  Since the old tire body 111 is entirely made of rubber, it can be reused as a raw material for rubber, and the tire insole 114 can be reused as it is. Therefore, the fifth embodiment not only contributes to the reduction in the price and performance of the tire, but also can be said to be extremely friendly to the environment as in the third embodiment.

(Usage form of Example 5)
The use form of the tire insole 114 of the fifth embodiment is to be mounted on the inner surface of the tire main body 111 having no metal mesh or metal wire as in the third embodiment to improve the electromagnetic characteristics of the tire. . Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  The sixth embodiment is a modification of the fourth embodiment and is characterized in that a conductor (for example, a plurality of circular closed-loop conductor foils) is provided on the outer surface of the tire insole.

(Configuration of Example 6)
FIG. 10 is an enlarged cross-sectional view showing the inside of the tire insole in Example 6 of the present invention.
The tire insole 115 is attached to the inner surface of the tire body 111 of FIG. 7, and the outer surface of the tire insole 115 has a plurality of widths and thicknesses made of, for example, copper foil. The circular closed loop conductive foil 115a is affixed with a rubber adhesive or the like. The circular closed loop conductive foil 115a is ideally attached at equal intervals in consideration of the fact that the tire rotates at a high speed, but considering that the electromagnetic wave is supplied to the valve 60 in FIG. In order to strengthen, it is better that the number of conductor foils is large near the valve 60. Therefore, the width and interval of the conductor foil near the bulb 60 are slightly narrowed, and the width and interval of the conductor foil are slightly thickened away from the bulb 60.

  The tire insole 115 is preferably made of an elastic plastic material or rubber material so that it can be easily attached to and detached from the tire body 111 of FIG. 7 in the same manner as the tire insole 113 of the fourth embodiment. Moreover, the shape of the tire insole 115 of the sixth embodiment is made by imitating the inner surface of the tire body 111 to be used, and the thickness may be about 5 mm. A tire in which the tire insole 115 is mounted on the tire body 111 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, when the tire rotates at a high speed or when the rotation is suddenly stopped, the tire insole 115 according to the sixth embodiment may be destroyed by friction or the like unless the rotational speed of the tire insole 115 is the same as that of the tire body 111. Therefore, when it is attached to the tire body 111, it is safe if it is partially adhered with an adhesive (for example, a rubber adhesive). However, if an excessive amount of adhesive is used, the tire becomes old and it is difficult to remove the tire insole 115 of the sixth embodiment from the tire body 111.

(Operation of Example 6)
Since the dimensions of the plurality of circular closed-loop conductor foils 115a attached to the outer surface of the tire insole 115 of the sixth embodiment are the same as those of the first embodiment, the basic operation is also the same as that of the first embodiment. . That is, the electromagnetic characteristics are almost the same, and the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameter) is almost the same as in the first embodiment.

(Effect of Example 6)
In Example 6, a tire insole 115 having a plurality of circular closed-loop conductor foils 115a on the outer surface is prepared and attached to the inner surface of the tire body 111 having no metal mesh or metal wire as shown in FIG. Then, a tire equivalent to the conventional tire 10 having a metal mesh or a metal wire can be obtained, and can be used without remodeling the detection device 70 that detects the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire is old and needs to be replaced, the tire insole 115 may be removed and attached to the inner surface of the tire body 111 that does not have a new metal mesh or metal wire.

  Since the old tire body 111 is entirely made of rubber, it can be reused immediately as a raw material for rubber, and the tire insole 115 can be reused as it is. Therefore, it can be said that Example 6 not only contributes to the reduction in the price and performance of the tire, but also is extremely environmentally friendly as in Example 3.

(Usage form of Example 6)
As in the third embodiment, the tire insole 115 according to the present embodiment is mounted on the inner surface of the tire body 111 that does not have a metal mesh or a metal wire to improve the electromagnetic characteristics of the tire. Obviously, if this is not attached to the tire body 111, the battery-less or electromagnetically-powered tire detecting device 70 for detecting the air pressure and temperature cannot function sufficiently.

  The seventh embodiment is a modification of the third embodiment and is characterized in that a conductor (for example, a plurality of circular closed-loop conductor films) is provided on the outer surface of the tire insole.

(Configuration of Example 7)
FIG. 11 is a cross-sectional view showing the inside of a tire insole in Example 7 of the present invention.
In the fifth embodiment, a plurality of circular closed-loop conductive films 114a are formed on the inner surface of the tire insole 114 so as to be compatible with the detection device 70 that detects battery-less or electromagnetically-fed tire pressure and temperature. there were. On the other hand, in the seventh embodiment, the concept is the same, but instead of forming a plurality of circular closed loop conductor films 114a on the inner surface of the tire insole 114 as in the fifth embodiment, the outer surface of the tire insole 116 is not formed. A plurality of circular closed-loop conductor films 116a made of silver film or the like are formed.

The circular closed loop conductive film 116a can be formed by the method described in the fifth embodiment.
For example, a mold having the same dimensions as the outer surface of the tire insole 116 is made of cardboard, plastic, rubber, or metal foil, and a desired circular closed loop pattern is cut out. In order to prevent the shape of the mold from collapsing, when cutting out a desired circular closed-loop pattern, it is necessary to cut out part of the pattern instead of cutting it out.

  Next, after matching the mold to the outer surface of the tire insole 116 and bringing it into close contact, for example, a conductive paste or conductive paint is applied to the cut-out portion of the mold with a brush or the like, or a spray of the conductive paint is applied. After spraying and drying to some extent, the mold is removed, and the circular closed loop conductor film that is not connected by cutting is applied with a brush using the same conductive material to complete a complete circular closed loop conductor film 116a.

  In the seventh embodiment, since the circular closed loop conductor formed on the outer surface of the tire insole 116 is a film, there is no need to worry about balance due to high-speed rotation of the tire. That is, the distribution of the width, interval, and number of the circular closed-loop conductor film 116a may not be uniform. Therefore, considering that electric power is supplied to the valve 60 in FIG. 1 in order to increase the magnetic field strength, it is better that the number of the circular closed-loop conductor films 116a is closer to the valve 60, so that the circular shape near the valve 60 is better. The width and interval of the closed-loop conductor film are slightly narrowed, and the width and interval of the circular closed-loop conductor film are slightly thickened away from the valve 60.

  The tire insole 116 of the seventh embodiment is preferably made of an elastic plastic or rubber material so that it can be easily attached to and detached from the tire body 111 like the tire insole 112 of the third embodiment. Moreover, the shape of the tire insole 116 of the seventh embodiment is made by imitating the inner surface of the tire body 111 to be used, and the thickness may be about 5 mm. A tire having the tire insole 116 attached to the tire body 111 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, when the tire rotates at a high speed or suddenly stops rotating, if the rotation speed of the tire insole 116 of the seventh embodiment is not set to be the same as that of the tire, there is a risk of being destroyed by friction or the like. For this reason, when the tire body 111 is attached to the tire body 111, it is safe if it is partially adhered with an adhesive (for example, a rubber adhesive). However, if too much adhesive is used, the tire becomes old and it is difficult to remove the tire insole 116 of the seventh embodiment from the tire body 111.

(Operation of Example 7)
Since the dimensions of the plurality of circular closed-loop conductor films 116a formed on the outer surface of the tire insole 116 of the seventh embodiment are the same as those of the second embodiment, the basic operation is also the same as that of the second embodiment. That is, the electromagnetic characteristics are almost the same, and the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameter) is almost the same as in the second embodiment.

(Effect of Example 7)
In Example 7, if a tire insole 116 having a plurality of circular closed loop conductor films 116a on the outer surface is prepared and attached to the inner surface of the tire body 111 that does not have a metal mesh or metal wire, the metal mesh Further, a tire equivalent to the conventional tire 10 having a metal wire can be obtained, and can be used without remodeling the detection device 70 that detects the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire is old and needs to be replaced, the tire insole 116 may be removed and attached to the inner surface of the tire body 111 that does not have a new metal mesh or metal wire.

  Since the old tire body 111 is entirely made of rubber, it can be reused as a raw material for rubber, and the tire insole 116 can be reused as it is. Therefore, this Example 7 not only contributes to the reduction in the price and performance of the tire, but also can be said to be extremely friendly to the environment as in Example 3.

(Usage form of Example 7)
As in the third embodiment, the tire insole 116 of the present embodiment is mounted on the inner surface of the tire main body 111 that does not have a metal mesh or metal wire to improve the electromagnetic characteristics of the tire. Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  Example 1 corresponds to a detection device 70 that detects the air pressure and temperature in a battery-less or electromagnetically fed tire by attaching a plurality of circular closed-loop conductor foils 53 to the inner surface of a tire body 51 that does not have a metal mesh or metal wire. I was able to do it. On the other hand, in the present Example 8, the concept is the same, but a plurality of circular closed-loop conductor foils 53 as in Example 1 are not attached to the inner surface of the tire body that does not have a metal mesh or metal wire. In place of the circular closed loop conductor foil 53, a plurality of turns of a solenoid conductor foil is attached.

(Configuration of Example 8)
FIG. 12 is an explanatory diagram of a tire structure showing Example 8 of the present invention.
The tire 130 includes a tire main body 131 formed of a ring-shaped rubber portion, and a hook portion 132 that is hooked when the tire 130 is attached to the wheel 43 is formed inside the tire main body 131. On the inner surface of the tire body 131, for example, a multi-turn solenoid conductor foil 133 made of copper foil or the like and having a certain width and thickness is attached with a rubber adhesive or the like. In FIG. 12, the solenoid-like conductive foil 133 having a plurality of turns is drawn slightly shifted from the tire body 131 for easy viewing, but is actually attached to the inner surface of the tire body 131.

  Considering that the tire 130 rotates at high speed, the solenoid conductor foil 133 is ideally affixed at equal intervals. However, considering that the valve 60 in FIG. In order to strengthen the resistance, it is preferable that the number of the solenoidal conductor foils 133 be large near the valve 60. Therefore, the solenoid-like conductor foil width and interval near the valve 60 are slightly narrowed, and the solenoid-like conductor foil width and interval are slightly thickened away from the valve 60.

(Operation of Example 8)
The operation of the external antenna 80 of FIG. 1 in the eighth embodiment is similar to that of the first, fourth, and sixth embodiments, and thus the description thereof will be omitted. .

  In FIG. 1, an external antenna 80 that is a power feeding antenna radiates a high-frequency magnetic field H in the space between the tire 50 and the wheel 43 and is perpendicular to the side surface of the tire 50. Accordingly, also in the tire 130 of FIG. 12, the high frequency magnetic field H radiated from the external antenna 80 is parallel to the axis of the solenoid conductor foil 133 attached to the inner surface of the tire body 131, that is, the solenoid conductor foil 133. It is perpendicular to the great circle and generates a magnetic flux Φ there. Since the magnetic flux Φ is generated by the high-frequency magnetic field H, it changes over time, and an electromotive force E is generated in the solenoidal conductor foil 133 in accordance with Faraday's electromagnetic induction law shown in Equation (1). An alternating current flows through the foil 133. Due to this alternating current, a secondary high-frequency magnetic field H ′ is generated not only in the space surrounded by the solenoidal conductor foil 133 but also in the vicinity of the outside thereof.

  Since the high-frequency magnetic field H is generated even at a location far from the external antenna 80 that is the source of the high-frequency magnetic field H in FIG. 1, even if the valve 60 moves away from or approaches the external antenna 80 due to the rotation of the tire 130. As long as it is in the solenoid-like conductor foil, it can always receive the radiation of the secondary high-frequency magnetic field H ′ that is almost stable, and is generally a so-called induction phenomenon. The stability of the magnetic flux received by the loop-shaped internal antenna 77 may be slightly different depending on the number of turns, the width, the interval, and the arrangement distribution of the solenoid conductor foil 133. Since the magnetic flux received by the internal antenna 77 is an alternating magnetic flux, an electromotive force E is generated in the internal antenna 77 according to the equation (1), the air pressure sensor 72 of the detection device 70 built in the valve 60, the temperature sensor 73, and these sensors 72. , 73 is a power source for the electronic circuit 74 that drives and controls the motor.

  In the eighth embodiment, basically, only one difference from the first, fourth, and sixth embodiments is that the alternating current that flows through the entire solenoidal conductive foil of multiple turns in the eighth embodiment is the same. 6 is that the alternating current flowing through the plurality of circular closed-loop conductor foils 53, 113a, and 115a varies depending on the circular closed-loop conductor foils 53, 113a, and 115a.

(Effect of Example 8)
In the eighth embodiment, the solenoidal conductor foil 133 is formed by winding one conductor foil, so that the induced alternating current flowing in each turn of the solenoid is the same, and thereby, in the space surrounded by the solenoidal conductor foil 133 The intensity of the generated high frequency magnetic field H is considerably stable as compared with the cases of the first, fourth, and sixth embodiments.

  Also, when the tire 130 is aged and discarded, unlike the conventional tire 10 having a metal mesh or a metal wire, the solenoid-like conductive foil attached to the inner surface of the tire body 131 is the same as in the first embodiment. 133 can be peeled off, and rubber and metal can be easily separated. As a result, the old tire 130 becomes a raw material of high-purity rubber, and the reuse rate becomes high.

  Therefore, the present embodiment 8 not only improves the performance of the tire 130 when used in combination with the battery-less or electromagnetically fed tire internal pressure and temperature detecting device 70, but also improves the processing of the conventional tire 10. This does not cause such environmental pollution, improves the reuse rate, and contributes to lowering the price of the tire 130.

(Usage form of Example 8)
The utilization form of the tire 130 of Example 8 is exactly the same as that of the conventional tire 10 having a metal mesh or a metal wire. However, when mounting on the wheel 43, if the distribution of the solenoidal conductor foil 123 of multiple turns pasted on the inner surface of the tire body 131 is not uniform, the air pressure and temperature in the battery-less or electromagnetically powered tire are detected. It is necessary to pay attention to the mounting work according to the instruction so that the maximum power can be supplied to the detecting device 70.

  In Example 8, a plurality of turns of a solenoid-like conductive foil 133 is attached to the inner surface of a tire body 131 that does not have a metal mesh or a metal wire, and the detection device 70 detects the air pressure and temperature in a batteryless or electromagnetically powered tire. It was designed to be compatible. On the other hand, in Example 9, although the concept is the same, a solenoidal conductive foil 133 having a plurality of turns is pasted on the inner surface of the tire body 131 having no metal mesh or metal wire as in Example 8. Instead, instead of the solenoidal conductor foil 133, a solenoidal conductor film having a plurality of turns is formed on the inner surface of the tire body.

(Configuration of Example 9)
FIG. 13 is an explanatory diagram of a tire structure showing Example 9 of the present invention.
The tire 140 includes a tire main body 141 formed of a ring-shaped rubber portion, and a hook portion 142 that is hooked when the tire 140 is attached to the wheel 43 is formed inside the tire main body 141. A multi-turn solenoid conductor film 143 is formed on the inner surface of the tire body 141. The solenoid conductor film 143 is a thin film made of, for example, a silver film, and is formed of a conductive paste such as a silver paste or a conductive paint. In FIG. 13, the solenoid-like conductive film 143 having a plurality of turns is drawn slightly shifted from the tire body 1410 for easy viewing, but is actually formed on the inner surface of the tire body 141.

  Since the method of forming the solenoidal conductor film 133 can be performed by the same method as in the second, fifth, and seventh embodiments, the description of the forming process is omitted.

  In the ninth embodiment, since the solenoid-like conductor film 143 is formed on the inner surface of the tire body 141, there is no need to worry about the balance due to the high-speed rotation of the tire 140, and the width and interval of the solenoid-like conductor film 143 are not required. The turn number distribution may not be uniform.

(Operation of Example 9)
Since the operation of the ninth embodiment is exactly the same as the operation of the eighth embodiment, the description thereof will be omitted. However, the thickness of the solenoid conductor film 143 is larger than the thickness of the solenoid conductor foil 133 of the eighth embodiment. Since a conductive paste such as a silver paste or a conductive paint is used on a thin part, the resistance is slightly higher than that of the conductive foil 133. Therefore, the electromotive force that can be generated by the internal antenna 77 in FIG. Compared to the case of 8, this is somewhat lower.

(Effect of Example 9)
In the ninth embodiment, it takes time to prepare a mold for forming the solenoid-like conductor film 143 in advance, but the subsequent work, that is, the formation work of the solenoid-like conductor film 143 can be performed very quickly. Increased efficiency can be expected.

  In addition, the amount of metal contained in the solenoid-like conductor film 143 formed on the inner surface of the tire body 141 is very small, and is almost the same as that of a tire made only of rubber, so that it can be used as a raw material for rubber when it becomes old. There is no problem, but if it is absolutely necessary to completely remove the metal contained in the solenoidal conductor film 143, the handle is cut with a small cutting machine or the like, and the powdered metal and some rubber are removed with a vacuum cleaner or the like. Just suck up.

  Therefore, although the ninth embodiment sacrifices the generated electromotive force of the internal antenna 77 for a while, it can be said that it is considerably superior to the eighth embodiment in terms of mass productivity and economy.

(Usage form of Example 9)
The utilization form of the tire 140 of the ninth embodiment is exactly the same as the conventional tire 10 having a metal mesh or a metal wire. However, if the distribution of the multi-turn solenoid-like conductor film 143 formed on the inner surface of the tire body 141 is not uniform when mounted on the wheel 43, the air pressure and temperature in the batteryless or electromagnetically fed tire are detected. It is necessary to pay attention to the forming operation according to the instruction so that the maximum power can be supplied to the detecting device 70.

  The tenth embodiment is a modification of the third embodiment, and is characterized in that a solenoid (for example, a multi-turn solenoid conductor wire) formed of a metal material is provided on the inner surface of the tire insole.

(Configuration of Example 10)
FIG. 14 is an explanatory diagram of the structure of a tire insole showing Example 10 of the present invention.
The tire insole 117 is attached to the inner surface of the tire body 111 in FIG. 7, and a plurality of turns of the solenoid conductor wire 117a is attached to the inner surface of the tire insole 117 with a rubber adhesive or the like. It is attached. Considering that the tire rotates at a high speed, the solenoid-like conductor wire 117a is ideally affixed at equal intervals. However, considering that the valve 60 in FIG. In order to strengthen, it is better that the number of conductor wires is large near the valve 60. Therefore, the distance between the solenoid-like conductor wires near the valve 60 is slightly narrowed, and the distance between the solenoid-like conductor wires is slightly widened away from the valve 60.

  The tire insole 117 of the tenth embodiment is preferably made of an elastic plastic or rubber material so that it can be easily attached to and detached from the tire body 111 in the same manner as the tire insole 112 of the third embodiment. Moreover, the shape of the tire insole 117 of the tenth embodiment is made by imitating the inner surface of the tire body 111 to be used, and the thickness may be about 5 mm. A tire having the tire insole 117 attached to the tire body 111 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, if the rotation speed of the tire insole 117 of the tenth embodiment is not set to be the same as that of the tire body 111 when the tire rotates at a high speed or is suddenly stopped, it is destroyed by friction or the like. Therefore, when it is attached to the tire body 111, it is safe if it is partially bonded with an adhesive (for example, rubber adhesive). However, if an excessive amount of adhesive is used, the tire becomes old and it is difficult to remove the tire insole 117 of this embodiment from the tire body 111.

(Operation of Example 10)
The basic operation of the tenth embodiment is the same as that of the eighth embodiment. However, the dimensions of the multi-turn solenoid conductor wire 117a attached to the inner surface of the tire insole 117 of the present embodiment are slightly smaller. As a result, the electromagnetic characteristics are somewhat different, and the value of the amount of coupling between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameters) mainly varies slightly.

(Effect of Example 10)
In the tenth embodiment, if a tire insole 117 having a plurality of turns of solenoid-like conductor wires 117a attached to the inner surface is attached to the inner surface of the tire body 111 that does not have a metal mesh or metal wire, A tire equivalent to the conventional tire 10 having a metal mesh or a metal wire is obtained, and can be used without remodeling the detection device 70 that detects the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire becomes old and needs to be replaced, the tire insole 117 may be removed and attached to the inner surface of the new tire body 111.

  Since the tire body 111 that has become old is only rubber, it can be reused as a raw material of rubber, and the tire insole 117 can be reused as it is. Therefore, this Example 10 not only contributes to the reduction in the price and performance of the tire, but also can be said to be extremely friendly to the environment as in Example 3.

(Usage form of Example 10)
The usage pattern of the tire insole 117 of the tenth embodiment is to mount the tire insole 117 on the inner surface of the tire body 111 that does not have a metal mesh or a metal wire, and to improve the electromagnetic characteristics of the tire. . Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  The present embodiment is a modification of the third embodiment and is characterized in that a conductor (for example, a multi-turn solenoid conductor foil) is provided on the inner surface of the tire insole.

(Configuration of Example 11)
FIG. 15 is an explanatory diagram of a structure of a tire insole showing Example 11 of the present invention.
The tire insole 118 is attached to the inner surface of the tire body 111 of FIG. 7, and a plurality of turns of a solenoidal conductive foil 118a made of copper foil or the like is provided on the inner surface of the tire insole 118 with a rubber system. Affixed with an adhesive or the like. The solenoid-like conductor foil 118a is ideally attached at equal intervals in consideration of the fact that the tire rotates at a high speed. However, considering that the valve 60 in FIG. In order to strengthen, it is better that the number of conductor foils is large near the valve 60. Therefore, the width and interval of the conductor foil near the bulb 60 are slightly narrowed, and the width and interval of the conductor foil are slightly thickened away from the bulb 60.

  The tire insole 118 according to the eleventh embodiment is preferably made of an elastic plastic or rubber material so that it can be easily attached to and detached from the tire body 111 like the tire insole 112 according to the third embodiment. Further, the shape of the tire insole 118 of the eleventh embodiment is made by imitating the inner surface of the tire body 111 to be used, and the thickness may be about 5 mm. The tire in which the tire insole 118 is mounted on the tire body 111 has almost the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, when the tire rotates at a high speed or suddenly stops rotating, if the rotational speed of the tire insole 118 of the eleventh embodiment is not set to be the same as that of the tire body 111, it is destroyed by friction or the like. Therefore, when the tire body 111 is attached to the tire body 111, it is safe if it is partially bonded with an adhesive (for example, a rubber adhesive). However, if too much adhesive is used, the tire becomes old and it is difficult to remove the tire insole 118 of this embodiment from the tire body 111.

(Operation of Example 11)
The basic operation of the eleventh embodiment is the same as that of the eighth embodiment. However, the dimensions of the multi-turn solenoid conductor foil 118a attached to the inner surface of the tire insole 118 of the eleventh embodiment are as follows. The electromagnetic characteristics are slightly different as a result of being somewhat smaller, and the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameters) varies somewhat.

(Effect of Example 11)
In Example 11, if a tire insole 118 having a plurality of turns of solenoidal conductor foil 118a attached to the inner surface is created and attached to the inner surface of the tire body 111 that does not have a metal mesh or metal wire, A tire equivalent to the conventional tire 10 having a metal mesh or a metal wire is obtained, and can be used without remodeling the detection device 70 that detects the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire becomes old and needs to be replaced, the tire insole 118 may be removed and attached to the inner surface of the new tire body 111.

  Since the tire main body 111 that has become old is entirely made of rubber, it can be reused as a raw material of rubber, and the tire insole 118 can be reused as it is. Therefore, it can be said that Example 11 not only contributes to the reduction in price and performance of the tire, but also is extremely environmentally friendly as in Example 3.

(Usage form of Example 11)
As in the third embodiment, the tire insole 118 according to this embodiment is mounted on the inner surface of the tire body 111 that does not have a metal mesh or a metal wire to improve the electromagnetic characteristics of the tire. Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  The concept of Example 12 is the same as that of Example 11, except that a multi-turn solenoid conductor film 118a is provided on the inner surface of the tire insole instead of the multi-turn solenoid conductor foil 118a. is there.

(Configuration of Example 12)
FIG. 16 is an explanatory diagram of a structure of a tire insole showing Example 12 of the present invention.
The tire insole 119 is attached to the inner surface of the tire body 111 of FIG. 7, and a multi-turn solenoid conductor film 119a made of a silver film or the like is formed on the inner surface of the tire insole 119. ing.

  Since the method of forming the solenoidal conductor film 119a is similar to that of the fifth embodiment, detailed description thereof is omitted. However, in Example 12, a solenoid-like pattern is cut out on the cardboard, plastic, rubber, or metal foil used as a mold instead of a circular closed loop pattern. In order to keep the shape of the mold from collapsing, when cutting out a desired solenoid-like pattern, it is necessary to cut out a part of the pattern instead of cutting it out. If the subsequent operation is performed in the same manner as in the fifth embodiment, the solenoid-like conductor film 119a is obtained on the inner surface of the tire insole 119.

  Also, the tire insole 119 of the twelfth embodiment is the same as that of the fifth embodiment in terms of material and shape. The tire in which the tire insole 119 is mounted on the tire body 111 has almost the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, if the rotation speed of the tire insole 119 of Example 12 is not the same as that of the tire body 111 when the tire rotates at a high speed or is suddenly stopped, it is destroyed by friction or the like. Therefore, when the tire body 111 is attached to the tire body 111, it is safe if it is partially bonded with an adhesive (for example, a rubber adhesive). However, if an excessive amount of adhesive is used, the tire becomes old and it is difficult to remove the tire insole 119 of the twelfth embodiment from the tire body 111.

(Operation of Example 12)
The basic operation of the twelfth embodiment is the same as that of the ninth embodiment. However, the size of the multi-turn solenoid conductive film 119a attached to the inner surface of the tire insole 119 is slightly reduced, so that the electromagnetic operation is reduced. However, the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameter) mainly varies slightly.

(Effect of Example 12)
In Example 12, a tire insole 119 having a plurality of turns of a solenoidal conductor film 119a formed on the inner surface is prepared and attached to the inner surface of the tire body 111 that does not have a metal mesh or metal wire. A tire equivalent to the conventional tire 10 having a mesh or a metal wire is obtained, and can be used without remodeling the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire is old and needs to be replaced, the tire insole 119 may be removed and attached to the inner surface of the new tire body 111.

  Since the old tire body 111 is entirely made of rubber, it can be reused immediately as a raw material for rubber, and the tire insole 119 can be reused as it is. Therefore, it can be said that the present Example 12 not only contributes to the reduction in the price and performance of the tire, but is also extremely friendly to the environment as in the third example.

(Usage form of Example 12)
The tire insole 119 of the utilization form of the present Example 12 is to be mounted on the inner surface of the tire body 111 that does not have a metal mesh or a metal wire as in Example 3 to improve the electromagnetic characteristics of the tire. . Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  Example 13 is a modification of Example 10 and is characterized in that a conductor (for example, a multi-turn solenoid conductor wire) is provided on the outer surface of the tire insole.

(Configuration of Example 13)
FIG. 17 is an explanatory diagram of a tire insole structure showing Example 13 of the present invention.
The tire insole 120 is attached to the inner surface of the tire main body 111 in FIG. 7, and a plurality of turns of the solenoid conductor wire 120a is attached to the outer surface of the tire insole 120 with a rubber adhesive or the like. It is attached. Considering that the tire rotates at high speed, the solenoid-like conductor wire 120a is ideally affixed at equal intervals. However, considering that the valve 60 is fed with electromagnetic waves, the magnetic field strength is increased. It is better that the number of conductor wires is large near the valve 60. Therefore, the distance between the solenoid-like conductor wires near the valve 60 is slightly narrowed, and the distance between the solenoid-like conductor wires is slightly widened away from the valve 60.

  As with the tire insole 112 of Example 3, the tire insole 120 of Example 13 is preferably made of an elastic plastic or rubber material so that it can be easily attached to and detached from the tire body 111. Further, the shape of the tire insole 120 of the thirteenth embodiment is made by imitating the inner surface of the tire body 111 to be used, and the thickness may be about 5 mm. A tire having the tire insole 120 attached to the tire body 111 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, when the tire rotates at a high speed or suddenly stops rotating, if the rotational speed of the tire insole 120 of the thirteenth embodiment is not made the same as that of the tire body 111, it is destroyed by friction or the like. Since there is a fear, it is safe to partially adhere with an adhesive (for example, rubber adhesive) when the tire body 111 is mounted. However, if an excessive amount of adhesive is used, the tire becomes old and it is difficult to remove the tire insole 120 of the thirteenth embodiment from the tire body 111.

(Operation of Example 13)
The basic operation of the thirteenth embodiment is almost the same as that of the eighth embodiment, but the width dimension of the multi-turn solenoid conductor wire 120a attached to the outer surface of the tire insole 120 of the thirteenth embodiment is as follows. The electromagnetic characteristics are slightly different due to the thinning, and the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameter) mainly changes somewhat.

(Effect of Example 13)
In Example 13, if a tire insole 120 having a plurality of turns of a solenoidal conductor wire 120a attached to the outer surface is created and attached to the inner surface of the tire body 111 that does not have a metal mesh or metal wire, A tire equivalent to the conventional tire 10 having a metal mesh or a metal wire is obtained, and can be used without remodeling the detection device 70 that detects the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire is old and needs to be replaced, the tire insole 120 may be removed and attached to the inner surface of the new tire body 111.

  Since the tire body 111 that has become old is entirely made of rubber, it can be reused as a raw material of rubber, and the tire insole 120 can be reused as it is. Therefore, it can be said that Example 13 not only contributes to the reduction in price and performance of the tire, but also is extremely environmentally friendly as in Example 3.

(Usage form of Example 13)
The tire insole 120 in the utilization form of the thirteenth embodiment is mounted on the inner surface of the tire main body 111 in the same manner as the third embodiment to improve the electromagnetic characteristics of the tire. Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  The present embodiment is a modification of the embodiment 11 and is characterized in that a conductor (for example, a solenoid conductor foil having a plurality of turns) is provided on the outer surface of the tire insole.

(Configuration of Example 14)
FIG. 18 is an explanatory diagram of a structure of a tire insole showing Example 14 of the present invention.
The tire insole 121 is attached to the inner surface of the tire body 111 of FIG. 7, and a multi-turn solenoid conductor foil 121a made of copper foil or the like is provided on the outer surface of the tire insole 121 with a rubber system. Affixed with an adhesive or the like. In consideration of the fact that the tire rotates at a high speed, the solenoid-like conductive foil 121a is ideally affixed at equal intervals. However, considering that the valve 60 is fed with electromagnetic waves, the magnetic field strength is increased. It is better that the number of conductor foils is greater near the bulb 60. Therefore, the width and interval of the conductor foil near the bulb 60 are slightly narrowed, and the width and interval of the conductor foil are slightly thickened away from the bulb 60.

  As with the tire insole 112 of the third embodiment, the tire insole 121 of the fourteenth embodiment is preferably made of an elastic plastic or rubber material so as to be easily attached to and detached from the tire body 111. Moreover, the shape of the tire insole 121 of Example 14 is made to imitate the inner surface of the tire main body 111 to be used, and the thickness may be about 5 mm. A tire having the tire insole 121 mounted on the tire body 111 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, if the rotation speed of the tire insole 121 of Example 14 is not made the same as that of the tire body 111 when the tire rotates at a high speed or is suddenly stopped, it is destroyed by friction or the like. Therefore, when it is attached to the tire body 111, it is safe if it is partially bonded with an adhesive (for example, rubber adhesive). However, if a large amount of adhesive is used, the tire becomes old and it is difficult to remove the tire insole 121 of Example 14 from the tire body 111.

(Operation of Example 14)
The basic operation of the fourteenth embodiment is the same as that of the eighth embodiment. In other words, it is the same as mounting an insole that does not contain a conductor material inside the solenoidal conductor foil 133 attached to the tire 130 of the eighth embodiment. That is, it is the same as sandwiching the solenoidal conductor foil 121a between the tire portion and the insole. Since the tire insole 121 is an elastic plastic or rubber material, it hardly affects the induced magnetic field generated between the tire and the wheel 43, so that the coupling between the external antenna 80 and the internal antenna 77 is mainly used. The value of the quantity (so-called S21 in terms of S parameter) is the same as that in the eighth embodiment.

(Effect of Example 14)
In Example 14, if a tire insole 121 having a plurality of turns of solenoidal conductor foil 121a attached to the outer surface is created and attached to the inner surface of the tire body 111 that does not have a metal mesh or metal wire, A tire equivalent to the conventional tire 10 having a metal mesh or a metal tire is obtained, and can be used without remodeling the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire becomes old and needs to be replaced, the tire insole 121 may be removed and attached to the inner surface of the new tire body 111.

  Since the tire body 111 that has become old is entirely made of rubber, it can be reused as a raw material for rubber, and the tire insole 121 can be reused as it is. Therefore, this Example 14 not only contributes to the reduction in the price and performance of the tire, but also can be said to be extremely friendly to the environment as in Example 3.

(Usage form of Example 14)
The tire insole 121 according to the usage form of the fourteenth embodiment is mounted on the inner surface of the tire main body 111 to improve the electromagnetic characteristics of the tire, as in the third embodiment. Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  Example 15 is a modification of Example 12 and is characterized in that a conductor (for example, a solenoid conductor film having a plurality of turns) is provided on the outer surface of the tire insole.

(Configuration of Example 15)
FIG. 19 is an explanatory diagram of the structure of a tire insole showing Example 15 of the present invention.
The tire insole 122 is attached to the inner surface of the tire body 111 of FIG. 7, and a multi-turn solenoid conductor film 122a made of a silver film or the like is formed on the outer surface of the tire insole 122. ing.

  Since the method of forming the solenoidal conductor film 122a is similar to that of the fifth or seventh embodiment, detailed description thereof is omitted. However, in Embodiment 15, a solenoid-like pattern is cut out on a cardboard, plastic, rubber, or metal foil that is a mold, instead of a circular closed loop pattern. In order to keep the shape of the mold from collapsing, when cutting out a desired solenoid-like pattern, it is necessary to cut out a part of the pattern instead of cutting it out. If the subsequent operation is performed in the same manner as in the fifth embodiment, the solenoidal conductor film 122a is obtained on the outer surface of the tire insole 122.

  Further, the tire insole 122 of the fifteenth embodiment is the same as that of the fifth embodiment in terms of material and shape. A tire having the tire insole 122 mounted on the tire body 111 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, if the rotation speed of the tire insole 122 of the fifteenth embodiment is not the same as that of the tire main body 111 when the tire rotates at a high speed or is suddenly stopped, it is destroyed by friction or the like. Therefore, when it is attached to the tire body 111, it is safe if it is partially bonded with an adhesive (for example, rubber adhesive). However, if an excessive amount of adhesive is used, the tire becomes old and it is difficult to remove the tire insole 122 of the fifteenth embodiment from the tire body 111.

(Operation of Example 15)
The basic operation of the fifteenth embodiment is the same as that of the ninth embodiment. In other words, it is the same as mounting an insole that does not contain a conductor material inside the solenoidal conductor film 143 applied to the tire 140 of the ninth embodiment. That is, it is the same as sandwiching the solenoid conductor film 143 between the tire portion and the insole. Since the tire insole 122 is an elastic plastic or rubber material, it hardly affects the induced magnetic field generated between the tire and the wheel 43, so that the coupling between the external antenna 80 and the internal antenna 77 is mainly used. The value of the quantity (so-called S21 in terms of S parameter) is the same as that in the ninth embodiment.

(Effect of Example 15)
In the fifteenth embodiment, a tire insole 122 having a multi-turn solenoid conductor film 122a formed on the outer surface is prepared and attached to the inner surface of the tire body 111 of the third embodiment that does not have a metal mesh or metal wire. Then, a tire equivalent to the conventional tire 10 having a metal mesh or a metal tire can be obtained, and can be used without remodeling the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically fed tire. When the tire becomes old and needs to be replaced, the tire insole 122 may be removed and attached to the inner surface of the new tire body 111.

  Since the tire body 111 that has become old is entirely made of rubber, it can be reused as a raw material of rubber, and the tire insole 122 can be reused as it is. Therefore, this Example 15 not only contributes to the reduction in the price and performance of the tire, but also can be said to be extremely friendly to the environment as in Example 3.

(Usage form of Example 15)
The tire insole 122 of the utilization form of the present Example 15 is to be attached to the inner surface of the tire body 111 that does not have a metal mesh or a metal wire, as in Example 3, and to improve the electromagnetic characteristics of the tire. . Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  Example 16 is characterized in that the tire insole is formed of a net-like (net-like) conductor wire or conductor foil.

(Configuration of Example 16)
FIG. 20 is an explanatory diagram of a tire structure showing Example 16 of the present invention.
The tire 150 includes a tire main body 151 formed of a ring-shaped rubber portion, and a hook portion 152 that is hooked when the tire 150 is attached to the wheel 43 is formed inside the tire main body 151. A conductor net-like insole 153 made of, for example, a still wire or copper foil is mounted on the inner surface of the tire body 151. The conductor net-like insole 153 is previously knitted in a net shape with a linear conductor (for example, a still wire or a narrow copper foil) around the inner width of the tire, and is substantially the same as the circumference of the tire inner great circle. Alternatively, it is cut into a slightly longer length, the shape is adjusted by press molding or the like so as to fit the inner shape of the tire, both ends are connected by welding, soldering, or the like, and then attached to the inside of the tire 150.

  The tire 150 having the conductor net-like insole 153 of Example 16 attached to the tire body 151 has substantially the same electromagnetic characteristics as the tire 10 having a conventional metal mesh or metal wire.

  On the other hand, when the tire 150 rotates at a high speed or is suddenly stopped, if the rotation speed of the conductor net-like insole 153 is not made the same as that of the tire main body 151, the tire 150 may be destroyed by friction or the like. Therefore, when the tire body 151 is mounted, it is safe if it is partially bonded with an adhesive (for example, a rubber adhesive). However, if an excessive amount of adhesive is used, it is difficult to remove the conductor net-like insole 153 from the tire body 151 because the tire 150 becomes old.

(Operation of Example 16)
The basic operation of the sixteenth embodiment is the same as that of the tire 10 having a conventional metal mesh or metal wire. That is, the conductor net-like insole 153 is simply provided with the metal mesh or metal wire of the conventional tire 10 on the inner surface of the tire main body 11 or is floated on the inner surface of the tire main body 11 from the tire main body 11. The basic operation is the same as that of the conventional tire 10. Therefore, the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameter) is substantially the same as that of the conventional tire 10.

(Effect of Example 16)
In the sixteenth embodiment, by providing the conductor net-like insole 153 on the inner surface of the tire main body 151, the detection device 70 that detects the air pressure and temperature in the battery-less or electromagnetically fed tire can be used without modification. When the tire 150 becomes old and needs to be replaced, the conductor net-like insole 153 may be removed and attached to the inner surface of the new tire body 111 as in the third embodiment.

  Since the tire main body 151 of the old tire 150 is entirely made of rubber, it can be reused immediately as a raw material for rubber, and the conductor net-like insole 153 can be reused as it is. Therefore, it can be said that Example 16 not only contributes to the reduction in price and performance of the tire, but also is extremely environmentally friendly as in Example 3.

(Usage form of Example 16)
The usage form of the conductor net-like insole 153 of Example 16 is to be mounted on the inner surface of the tire body 111 that does not have a metal mesh or metal wire as in Example 3 to improve the electromagnetic characteristics of the tire. It is. Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

  The present Example 17 is characterized in that the conductive material (for example, still, copper, silver, etc.) used in Examples 1 to 16 is replaced with conductive fiber (for example, carbon fiber) as much as possible. .

(Configuration of Example 17)
Rubber and carbon fibers, which are the main materials of tires, are also organic polymers mainly composed of carbon. However, the electrical resistance of the rubber of the tire is high and is almost an insulator, whereas the electrical resistance of the carbon fiber is small, it has good conductivity, and the resistivity is about 10 ³ Ωcm or less.

  Since the present Example 17 performed by replacing all the conductor materials (for example, a still, copper, silver, etc.) used for Examples 1-16 with carbon fiber, a structure is the same as the structure to each Example 1-16, respectively. Are the same. However, among the conductive materials used in Examples 1 to 16, there are, for example, copper foil, silver film, still wire, etc. In order to be able to use carbon fiber in the same manner as these conductive materials. First of all, it is necessary to process the shape close to each material in advance.

  For example, since the carbon fiber has a diameter of about 10 μm, it cannot be used as a substitute material for a copper foil, a silver film, a still wire, or the like as it is. For this reason, the carbon fiber is made into a yarn having a diameter of several hundred microns, and this is used to make a thicker yarn. If a thin cloth or a thick cloth is knitted using a thread processed with these carbon fibers, or if it is hardened with a resin and processed into a carbon wire such as a still wire, Examples 1 to 16 will be included. All the conductor materials used can be replaced by carbon fibers. For example, a thick carbon cloth can be used instead of the copper foil, a thin carbon cloth can be used instead of the silver film, and a carbon wire can be used instead of the still wire.

  Therefore, the configuration of the seventeenth embodiment is basically the same as the configurations of the first to sixteenth embodiments even if the processing method is slightly different.

(Operation of Example 17)
The basic operation of the tire of Example 17 is the same as that of the tire 10 having a conventional metal mesh or metal wire, as in the operations of Examples 1 to 16. In other words, the operation of the tire of Example 17 is not to provide an external metal foil (copper foil), metal film (silver film), or metal wire (still wire) to a tire without a metal mesh or metal wire. By providing a thick carbon fabric made of fiber, a thin carbon fabric or a carbon wire, the operation of each of Examples 1 to 16 is almost the same. Therefore, the value of the coupling amount between the external antenna 80 and the internal antenna 77 (so-called S21 in terms of S parameter) is substantially the same as that of the conventional tire 10.

(Effect of Example 17)
If carbon fiber is utilized like the present Example 17, the same effect as Examples 1-16 can be acquired. Moreover, since carbon fiber is an organic polymer mainly composed of carbon, like tire rubber, it is easy to get used to each other and has stronger adhesive strength than metal. Further, since the carbon fiber is strong alkali, strong acid, and high temperature (up to about 200 ° C.), there is no deterioration in characteristics, and the coupling amount between the external antenna 80 and the internal antenna 77 via the carbon fiber of Example 17 (so-called S21). The value of is stable regardless of the life of the tire.

  On the other hand, carbon fiber is an organic polymer mainly composed of carbon, like tire rubber, so when a tire is replaced when it is old, it does not have a metal mesh or metal wire, and various carbon fibers added later Various magnetically induced closed loops or solenoids made with can be processed together and can be readily reused as a raw material for rubber.

  Therefore, this Example 17 not only contributes to the reduction in the price and performance of the tire, but also can be said to be extremely friendly to the environment as in Example 3.

(Usage form of Example 17)
As in the third embodiment, the utilization form of the seventeenth embodiment is to be mounted on the inner surface of the tire main body 111 that does not have a metal mesh or metal wire to improve the electromagnetic characteristics of the tire. Obviously, if this is not attached to the tire body 111, the detection device 70 for detecting the air pressure and temperature in the battery-less or electromagnetically-fed tires cannot function sufficiently.

It is explanatory drawing of the electromagnetic wave electric power feeding system in the tire condition detection system which shows Example 1 of this invention. It is an expanded sectional view of the tire in FIG. It is a figure which shows the internal structure of the valve | bulb in FIG. It is explanatory drawing of the conventional tire state detection system. It is explanatory drawing of the structure of the tire in FIG. It is sectional drawing which shows the inner side of the tire in Example 2 of invention. It is sectional drawing which shows the inner side of the tire in Example 3 of this invention. It is an expanded sectional view which shows the inner side of the tire insole in Example 4 of invention. It is sectional drawing which shows the inner side of the tire insole in Example 5 of this invention. It is an expanded sectional view which shows the inner side of the tire insole in Example 6 of this invention. It is sectional drawing which shows the inner side of the tire insole in Example 7 of this invention. It is explanatory drawing of the structure of the tire which shows Example 8 of this invention. It is explanatory drawing of the structure of the tire which shows Example 9 of this invention. It is explanatory drawing of the structure of a tire insole which shows Example 10 of this invention. It is explanatory drawing of the structure of the tire insole which shows Example 11 of this invention. It is explanatory drawing of the structure of the tire insole which shows Example 12 of this invention. It is explanatory drawing of the structure of a tire insole which shows Example 13 of this invention. It is explanatory drawing of the structure of a tire insole which shows Example 14 of this invention. It is explanatory drawing of the structure of a tire insole which shows Example 15 of this invention. It is explanatory drawing of the structure of the tire which shows Example 16 of this invention.

Explanation of symbols

43 Wheel 50, 110, 130, 140, 150 Tire 51, 101, 111, 131, 141, 151 Tire body 53, 100, 111, 103, 113a-115a Circular closed loop conductive foil 60 Valve 70 Detector 77 Internal antenna 80 External Antenna 91 Transceiver 92 High frequency power source 116a Circular closed loop conductor film 112-122 Tire insole 112a Conductor 117a, 120a Solenoid conductor wire 118a, 121a, 133, 143 Solenoid conductor foil 119a, 122a Solenoid conductor film 153 In conductor net Floor

Claims (13)

  One or a plurality of independent circular closed loop conductors having a predetermined line width are provided at predetermined positions on a part or the whole of the inner surface of the tire main body along the rotation direction of the tire main body. tire.   The tire according to claim 1, wherein the conductor is made of a conductive foil formed of a metal material or conductive fiber, and the conductive foil is bonded to an inner surface of the tire body.   The tire according to claim 1, wherein the conductor is made of a conductor film formed of a metal film or conductive fibers, and the conductor film is formed on an inner surface of the tire body.   The tire according to claim 1, wherein the conductor is made of a solenoid formed of a metal material or conductive fiber, and the solenoid is provided on an inner surface of the tire body.   The conductor is characterized in that a conductor film having the circular closed loop pattern is formed on the inner surface of the tire body based on a circular closed loop pattern die cut out in conformity with the inner shape of the tire body. Item 1. The tire according to Item 1.   The tire according to claim 5, wherein the conductive film having the circular closed loop pattern is formed of a conductive paint.   The conductor is based on a screen mask having a circular closed loop pattern formed in conformity with the inner shape of the tire body, and a conductive film made of a conductive paint or conductive paste having the circular closed loop pattern is provided on the tire body. The tire according to claim 1, wherein the tire is formed on an inner surface. It is composed of an elastic body with a predetermined thickness having a shape that conforms to the shape inside the tire body, and includes a tire insole that is detachably attached to the inside of the tire,
One or a plurality of independent circular closed loop conductors having a predetermined line width are provided at predetermined positions on the outer surface or inner surface of the tire insole along a rotation direction of the tire body. A tire characterized by that. The tire has a shape suitable for the inner shape of the tire body, and includes a tire insole that is attached to the inside of the tire body,
The tire insole is constituted by a conductor that forms a circular closed loop along a rotation direction of the tire body.   9. The conductor according to claim 8, wherein the conductor is a metal mesh, a metal net, a metal wire, a fiber mesh made of conductive fiber, a fiber net made of conductive fiber, a fiber wire made of conductive fiber, or a solenoid. 9. The tire according to 9. A tire insole that is detachably mounted on the inside of the tire body, comprising an elastic body having a predetermined thickness that has a shape that matches the shape on the inside of the tire body,
In the tire insole, a conductive reinforcing member is embedded along the rotation direction of the tire body.   The reinforcing member is a metal mesh, a metal net, a metal wire, a fiber mesh made of conductive fibers, a fiber net made of conductive fibers, a fiber wire made of conductive fibers, or a solenoid. 11. The tire according to 11. The tire according to any one of claims 1 to 12, which is mounted on a wheel,
An external antenna attached near the outside of the tire and radiating a high-frequency magnetic field to the tire to generate an inductive alternating current in the conductor;
An internal antenna that is disposed in a space between the tire and the wheel, receives a high-frequency magnetic field generated by the inductive alternating current generated in the conductor in the space, and outputs a reception signal;
Power supply means attached to the inside of the tire, rectifies the received signal into DC power, and supplies driving power to a detection device that detects a predetermined state in the tire;
An electromagnetic wave power feeding system characterized by comprising:

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