JP2014148248A - Transmission device and wheel assembly including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission device capable of fulfilling an antitheft function as a transmitter when being attached, and maintaining the antitheft function even when being detached, and to provided a wheel assembly including the transmission device.SOLUTION: A transmission device 17 is used in a wheel assembly for movable body, the wheel assembly including a fluid chamber and a valve 19 that can freely maintain or block communication of a fluid between the fluid chamber and outside, and the transmission device 17 is attachable to the valve 19. The valve 19 includes a valve element and valve element retention means that is attached to the valve 19 and retains the valve element. The transmission device 17 includes a support capable of being fixed to the valve 19 and transmission means that is retained by the support body and transmits a notice signal. The support is detachable from the valve 19 only when the valve element retention means is detached from the valve 19.

Description

  The present invention relates to a transmission device that exhibits an anti-theft function and a wheel assembly including the transmission device.

  2. Description of the Related Art In recent years, antitheft devices that are attached to a vehicle body of a moving body have been used to prevent theft of a moving body such as a bicycle. Patent Document 1 discloses a transmission device that is arranged between a cargo cage attached to a front fork of a bicycle and a mudguard of a front wheel.

JP 2004-359183 A

  When using a transmitting device as disclosed in Patent Document 1, for example, if a vehicle theft person notices the presence of the transmitting device and removes the transmitting device from the vehicle, the anti-theft function will disappear. There was a problem.

  The present invention has been made in view of the above-described points, and includes a transmission device capable of performing an anti-theft function as a transmitter when mounted and capable of maintaining the anti-theft function even when detached. One object is to provide a wheel assembly.

  The transmitting device according to claim 1 of the present application is a transmitting device that can be attached to the valve of a moving body wheel assembly having a fluid chamber and a valve capable of maintaining and blocking fluid communication between the fluid chamber and the outside. The valve includes a valve body and a valve body holding unit that is attached to the valve and holds the valve body. The transmitting device is supported on the valve, and is held on the support body. And a transmitting means for transmitting a notification signal, and the support body can be removed from the valve only when the valve body holding means is detached from the valve.

  The transmitting device according to claim 9 is a wheel, a tire portion that is attached to the outer periphery of the wheel and includes a fluid chamber, and switching between maintaining and shutting off fluid communication between the fluid chamber and the outside. The transmitting device is attached to at least one moving body wheel assembly including a valve that can perform the above-described operation. The valve includes a hollow cylindrical body that fluidly communicates between the inside of the fluid chamber and the outside, and the hollow cylindrical body. Is held at the predetermined blocking position, and the valve body capable of blocking the fluid movement in the hollow cylindrical body, and the valve body attached to the hollow cylindrical body at the blocking position in the hollow cylindrical body. The transmission device includes a support body that can be held, and the transmission device includes a support body that can be fixed to the valve, and a transmission means that is held by the support body and transmits a notification signal. The valve body holding means is a ring body that can be fitted to a predetermined position on the outer periphery of the hollow cylindrical body to hold the valve body in the blocking position, and the support body is provided outside the hollow cylindrical body. It has a hole having an inner diameter larger than the diameter and smaller than the outer diameter of the valve body holding means.

  In addition, the wheel assembly according to claim 11 of the present application is configured to maintain and block fluid communication between the wheel, a tire portion mounted on the outer periphery of the wheel and including the fluid chamber, and between the inside and outside of the fluid chamber. A hollow tubular body that includes a valve that can be switched, and a transmitter that can be fixed to the valve and that can transmit a notification signal, the valve being in fluid communication between the fluid chamber and the outside; A valve body capable of blocking fluid movement in the cylindrical body by being held at a predetermined blocking position in the cylindrical body, and holding the valve body at the blocking position in the hollow cylindrical portion and the transmitting device Including valve body holding means for maintaining the fixed state of the valve to the valve.

  Further, the transmission device according to claim 12 of the present application is a transmission that can be attached to the valve of a moving body wheel assembly that includes a fluid chamber and a valve that can maintain and shut off fluid communication between the fluid chamber and the outside. The transmission device is a support body that can be fixed to the valve, transmission means that is held by the support body and transmits a notification signal, and is attached to the valve and is fixed at a predetermined closed position. A fixing maintaining means for maintaining the valve in a closed state and maintaining the support fixed to the valve, and the support is provided when the fixing maintaining means is detached from the closed position. It can only be removed.

It is a side view of the wheel assembly of the state which attached the transmitter of this invention. FIG. 2 is a partially enlarged side view of FIG. 1. It is a top view of the transmitter concerning an example. It is sectional drawing along the 3B-3B line | wire of FIG. 3A. It is a block diagram of a transmission / reception system. It is sectional drawing of the transmitter which concerns on an Example. It is a block diagram of a transmission / reception system. It is a flowchart which shows an operation control routine. It is a flowchart which shows an operation control routine. It is a side view of the valve | bulb equipped with the transmitter. It is a side view of the valve | bulb equipped with the transmitter. It is a side view of the valve | bulb equipped with the transmitter.

  A wheel assembly 10 according to an embodiment of the present invention will be described with reference to FIGS. 1, 2, 3A, and 3B.

  The wheel assembly 10 includes a hub shaft 11, a plurality of spokes 12 extending in the radial direction from the hub shaft 11, a wheel portion including a rim 13 fixed to the hub shaft 11 by the spokes 12, and an outer periphery of the rim 13. This is a wheel assembly in which a transmitting device 17 serving as transmitting means is attached to a wheel with a tire including a tube 14 that is mounted and has a fluid chamber inside, and a tire 15 that encloses the tube 14 together with a rim 13. The tube 14 is attached with a valve 19 capable of switching between maintaining and shutting off fluid communication between the inside and the outside of the tube 14. A valve stem 21 of the valve 19 is a hole provided inside the rim 13. It passes through (not shown) and is exposed to the outside. In this embodiment, the valve 19 is a so-called English valve.

  FIG. 2 shows the valve 19 with the cap nut fully tightened downward. The valve 19 includes a valve stem 21, a rim nut 23, a plunger 24, and a cap nut 25. The valve stem 21 is a hollow cylindrical body having an outer diameter d 1, the lower end is connected to the tube 14, and the inside and the outside of the tube 14 are in fluid communication via the valve stem 21. The valve stem 21 has a male screw formed on the outer peripheral surface thereof, and is fixed to the rim 13 by a rim nut 23. In the valve stem 21, a plunger (valve element) 24 to which insect rubber (not shown) is attached is disposed. The plunger 24 is pressed downward by a cap nut 25 as a valve body holding means having an outer diameter d2 attached to the valve stem 21. By tightening the cap nut 25 downward and fixing it in a predetermined closed position, the plunger 24 is disposed and held in the blocking position. When the plunger 24 is held at the blocking position, air can flow into the tube 14 through the valve stem 21, but air does not flow out of the tube 14. When the cap nut is loosened and moved upward, the plunger 24 can be moved upward from the blocking position. When the plunger 24 moves upward from the blocking position, the blocking effect by the plunger 24 is released, and air begins to flow out from the inside of the tube 14 through the valve stem 21. Further, when the cap nut 25 is completely removed from the valve stem 21, the plunger 24 can also be removed from the valve stem 21, and the inside and outside of the tube 14 are completely in fluid communication via the valve stem 21, so that the tube can be freely released. The air begins to escape. The distance between the lower surface of the cap nut 25 and the rim nut 23 when the cap nut 25 is fully tightened downward is h1.

  FIG. 3A is a plan view of the transmission device 17, and FIG. 3B is a cross-sectional view of the transmission device 17. In FIG. 3B, the outer shape of the valve 19 is additionally illustrated by a broken line in order to facilitate understanding of the state at the time of mounting. The transmission device 17 includes a support body 29 attached to the valve stem 21 between the rim nut 23 and the cap nut 25 and a transmission portion 31 held in the support body 29. The support body 29 has, for example, a rectangular parallelepiped shape, and has a cylindrical through hole 29A at the center. The diameter d3 of the circular cross section perpendicular to the cylindrical axis of the through hole 29A is larger than the outer diameter d1 of the valve stem 21 and smaller than the outer diameter d2 of the cap nut. The support 29 is attached to the valve 19 by passing the valve stem 21 through the through-hole 29 </ b> A and then attaching a cap nut 25 to the valve stem 21. That is, the fixed state of the support 29 to the valve 19 is maintained by attaching the cap nut 25 as a fixing maintaining means to the valve stem 21.

  Note that the height h2 of the support body is such that the cap nut 25 is lowered to fix the plunger 24 in the sealing position so that a fixing tool (register mark base) can be attached when the air is introduced into the tube 14. It is preferable that the distance h1 is smaller than the distance h1 between the lower surface of the cap nut and the upper surface of the rim nut.

  FIG. 4 shows a transmission / reception system 33 including a transmission unit 31 and a reception unit 32. The transmitter 31 includes, for example, a transmitter 34, a battery 35, a generator 37, a charge / discharge control circuit 39, and a microcomputer 41 connected to and controlling each of them. The transmitter 34 is a transmitter incorporating a transmitting antenna, and is an RF beacon that generates and transmits a radio signal radio wave signal that is a notification signal continuously or intermittently in accordance with an instruction from the microcomputer 41. This notification signal is received by, for example, the receiver 43 included in the receiver 32 held by the owner (hereinafter referred to as a user) of the bicycle to which the wheel assembly 10 is attached, whereby the user can recognize the wheel assembly. It may be possible to know ten positions. The receiver 43 may include, for example, a display unit (not shown), and the position information of the wheel assembly 10 accompanied by latitude / longitude information or map information may be displayed on the display unit. In addition, when the spoke 12 or the rim 13 of the wheel assembly 10 has conductivity, the spoke 12 or the rim 13 may be used as the antenna of the transmitter 34.

  The battery 35 is connected to the transmitter 34 and the generator 37, and stores a power generated by the generator 37 and supplies the power to the transmitter 34, for example, a secondary battery such as a lithium ion battery. . The generator 37 is, for example, a vibration power generation element using a piezoelectric element or the like that can generate power by vibration or centrifugal force generated in the wheel assembly 10 by traveling of a bicycle. The charge / discharge control circuit 39 is associated with the battery 35 and is a circuit that controls charge / discharge so that the battery 35 does not enter an overcharge state or an overdischarge state.

  The microcomputer 41 has a built-in program for executing an operation routine for controlling the transmitter 34, the battery 35, and the generator 37. The microcomputer 41 can be operated by a radio signal from the outside by a remote controller 45 included in the receiving unit 32 held by the user. The microcomputer 41 starts an operation routine when it receives an ON signal that is one of the operation signals from the remote controller 45, and operates as an operation of the transmitter 34 when it receives a transmission stop signal that is one of the operation signals from the remote controller 45. Is configured to stop. Note that the receiver 43 and the remote controller 45 may be integrated. As described above, the transmitting device 17 fulfills its anti-theft function by notifying its own position by a radio beacon signal transmitted from the transmitter 34.

  As described above, the support body 29 of the transmission device 17 passes the valve stem 21 having the outer diameter d1 (<d3) through the through hole 29A having the inner diameter d3, and then passes the valve stem 21 having the outer diameter d2 (> d3). It is attached to the valve 19 by attaching a cap nut 25. That is, once the transmission device 17 is attached, the cap nut 25 is removed from the predetermined closed position and removed, and if the plunger 24 is moved from the sealing position and the air in the tube 14 is not removed, the transmitter 17 is removed. I can't. Therefore, even if the theft attempts to steal by removing the transmitting device 17, the air in the tube has escaped at that time, making it difficult to escape using the stolen moving body, in other words, preventing theft. Function is maintained.

  FIG. 5 is a cross-sectional view showing an embodiment different from the embodiment shown in FIGS. 2, 3A and 3B. The configuration of this embodiment is the same as that of the embodiment shown in FIGS. 2, 3A, and 3B except that a spacer is attached. Further, in FIG. 5, the outer shape of the valve 19 is additionally illustrated by a broken line as in FIG. 3B. In this embodiment, a hollow cylindrical spacer 47 such as a cylinder is attached to the valve stem 21 between the support 29 and the cap nut 25 so that the support 29 does not move along the valve stem 21 after the attachment. May be. Further, the support 29 and the spacer 47 may be integrally formed. In addition, the spacer 47 has a height smaller than h1-h2 in this embodiment, but the spacer 47 may have the same height as h1-h2. Further, an elastic body such as rubber is used for the spacer 47, the height of the spacer 47 is set higher than h1-h2, and the spacer 47 is sandwiched between the cap nut 25 and the support 29, and the elastic force of the spacer 47 It is good also as fixing the support body 29 so that there may be no vibration.

  As shown in FIG. 6, the transmission unit 31 may include position specifying means 51 connected to the transmitter 34, the battery 35, and the microcomputer 41. The position specifying means 51 is, for example, a GPS (Global Positioning System) receiver. The position specifying means 51 is controlled by the microcomputer 41, receives power supplied from the battery 35, receives a GPS signal from a GPS satellite, processes the signal to generate position information, and sends it to the transmitter 34. Send. The transmitter 34 that has received the position information generates and transmits a notification signal including the position information. The transmitted notification signal is received, for example, by the receiver 43 of the owner of the bicycle to which the wheel assembly 10 is attached, so that the owner can know the position of the bicycle to which the wheel assembly 10 is attached. It may be possible.

  The position specifying means 51 may be a mobile phone communication terminal or a PHS (Personal Handy-phone System) communication terminal. In this case, the position specifying means 51 receives a signal from the mobile phone base station or the PHS base station, specifies the position of the position specifying means 51 itself from the relative position to the mobile phone base station or the PHS base station, and serves as position information. Is generated and transmitted to the transmitter 34. The transmitter 34 that has received the position specifying information generates and transmits a notification signal including the position specifying information. Similar to the above, the transmitted notification signal is received, for example, by the receiver 43 of the owner of the bicycle including the wheel assembly 10 so that the owner knows the position of the bicycle including the wheel assembly 10. May be possible.

  Note that the position specifying means 51 may not generate position specifying information by processing a signal from a GPS satellite, a mobile phone base station, or a PHS base station. In that case, the position specifying means 51 transmits the raw data of the received signal to the transmitter 34, the transmitter 34 transmits the raw data to the receiver 43 held by the user, and the receiver 43 processes the raw data. The position specifying information for specifying the position of the transmission device 17 may be generated. In addition, the raw data is transmitted to another computer through a mobile phone line or the like, and the other computer processes the raw data and returns the processed data to the position specifying means 51 or to the receiver 43. It is good also as performing what is called cloud processing which transmits.

  An example of the operation routine of the transmitter 31 is shown in FIG. First, when the microcomputer 41 receives an ON signal generated by the remote controller 45, the operation routine is started. Thereafter, in step S1, it is determined whether or not the bicycle has been moved. Whether or not the bicycle has been moved is determined by, for example, whether or not the generator 37 has generated power by rotating or vibrating the wheel assembly 10. If it is determined that the bicycle has been moved, the process proceeds to step S2, and the transmitter 34 transmits a notification signal. If it is determined that the bicycle is not moved, the process ends.

  When step S2 ends, the step proceeds to S3, where it is determined whether or not a call stop signal from the remote controller 45 has been received. If the transmission stop signal from the remote controller 45 has not been received, the process returns to S2 and the notification signal continues to be transmitted. When the transmission stop signal from the remote controller 45 is received, the process proceeds to S4, the transmission of the notification signal is stopped, and the operation routine ends.

  In addition, the transmission part 31 is good also as operating automatically irrespective of the ON signal from the remote control 45. FIG. An example of the operation routine in that case is shown in FIG. First, in step S1, it is determined whether or not the bicycle is parked. Whether or not the bicycle is parked is, for example, whether or not a certain time (for example, 5 minutes or more) has elapsed since the generator 37 finished generating power, or the receiver 43 held by the user is a certain distance from the transmitter 31. It is determined by whether or not (for example, 10 m or more) away. If it is determined that the bicycle is parked, the process proceeds to step S2. If it is determined that the bicycle is not parked, the process ends.

  In step S2, it is determined whether or not the bicycle has been moved. Whether or not the bicycle has been moved is determined in the same manner as described above, for example, based on whether or not the generator 37 generates power by rotating or vibrating the wheel assembly 10. If it is determined that the bicycle has been moved, the process proceeds to step S3, and the transmitter 34 transmits a notification signal. If it is determined that the bicycle is not moved, the process ends.

  When step S3 ends, the step proceeds to S4, where it is determined whether or not a transmission stop signal from the remote controller 45 has been received. If the transmission stop signal from the remote controller 45 has not been received, the process returns to S3 and the notification signal continues to be transmitted. When the transmission stop signal from the remote controller 45 is received, the process proceeds to S5, the transmission of the notification signal is stopped, and the operation routine ends.

  Note that the individual identification information of the transmission device 17 may be included in the notification signal issued by the transmitter 34 by storing the individual identification information of the transmission device 17 in the microcomputer 41. The notification signal emitted by the transmitter 34 may be an optical signal, an acoustic signal, an odor, or a combination thereof. In this case, a user or a person around the bicycle to which the wheel assembly 10 is attached can recognize that the bicycle is stolen by light, sound, smell or the like without the receiver 43. . For example, by generating a sound such as “Current bicycle is being stolen. This person is a bicycle thief”, a significant anti-theft effect can be achieved.

  Further, the support 29 of the transmission device 17 may be formed integrally with the valve 19. For example, when the support body 29 is formed integrally with the cap nut 25, the thief cannot attach the cap nut 25 again after removing the transmission device 17, and cannot prevent the outflow of air in the tube 14. . Therefore, it is possible to make it more difficult for a thief to escape using the bicycle to which the wheel assembly 10 is attached. When the support 29 is formed integrally with the valve stem 21, the theft must destroy the valve stem 21 or remove the valve stem from the tube 14 in order to remove the transmitter 17. The air will surely be lost. Therefore, it is possible to make it more difficult for the thief to escape using the bicycle to which the wheel assembly 10 is attached.

  Further, as shown in FIG. 9, after attaching the transmitting device 17 and attaching the cap nut 25 to the valve stem 21, an annular stopper 49 is provided on the portion of the plunger 24 exposed above the cap nut 25, for example. You may fix by adhesion | attachment or welding. By doing so, the plunger 24 must be removed from the valve stem 25 when the cap nut 25 is removed in order to remove the transmitter 17. When the plunger 24 is removed, the air in the tube 14 escapes from the valve stem 25 at a stretch. Therefore, it is possible to make it more difficult for the thief to escape using the bicycle to which the wheel assembly 10 is attached. Even in this case, it is possible to use spacers as in the embodiment shown in FIG.

  Further, the pitch of the threads formed on the cap nut 25 and the valve stem 21 may be different from the pitch of the cap nuts of the cap nut and the valve stem 21 that are generally spread. By doing in this way, a thief prepares a commonly used cap nut in advance and prevents the transmitter 17 from being removed in a short time and replacing the cap nut before the air is completely removed. it can. In addition, the thread pitch formed on the cap nut 25 and the valve stem 21 is made narrower than the pitch of the cap nut and the valve stem 21 which are generally spread, so that the cap nut can be removed and attached. By making it longer, it is possible to prevent the transmission device 17 from being removed in a short time and the cap nut from being replaced before the air is completely removed. Thus, by removing the transmission device 17 and gaining time until the cap nut is attached again, the outflow of air from the tube can be reliably ensured and the antitheft effect can be improved.

  Further, in a moving body such as a bicycle having two or more wheel assemblies, the transmitting device 17 may be attached to one wheel assembly, and a dummy body obtained by removing only the transmitter from the transmitting device 17 may be attached to another wheel assembly. . In this way, the theft must consider taking off the dummy of the transmission device 17, and an anti-theft effect and thus an anti-theft effect can be enhanced by using an inexpensive dummy.

  In the above embodiment, the English type valve has been described as an example, but the present invention is also applicable to other valves such as a French type valve and an American type valve. For example, as shown in FIG. 10, a hole 55 may be provided in the valve stem 53 of the French valve. In this case, after attaching the transmitting device 17 to the valve stem, it is screwed with the valve stem 53, and a hole is formed using an attachment nut 57 as a fixing and maintaining means whose outer diameter is larger than the inner diameter of the through hole 29A of the support 29. 55 is sealed. By doing so, it is possible to form a mechanism in which air flows out from the tube when the transmitter 17 is removed even in a French valve or a rice valve. In order to achieve good sealing of the hole 55, the surface of the female thread portion of the mounting nut 57 is preferably formed of a sealing material such as a polymer material. Further, as shown in FIG. 11, a female screw that is screwed to the valve stem 53 is formed on the inner surface of the through hole 29A of the support 29, and the support 29 is fixed to the valve stem 53 by the support 29 itself. 55 may be sealed. In addition, although the example which provides a hole part in a valve stem demonstrated the French type valve as an example, this Example is applicable also to an English type valve and a US type valve.

  Further, the support body 29 of the transmission device 17 is formed integrally with a portion for fixing the valve body of the French valve and the American valve, or the support body 29 is formed integrally with the valve stem of the French valve and the American valve, etc. And you may form the mechanism in which the air in the tube 14 escapes by removing the transmitter 17.

  In the above-described embodiment, an example in which a user's receiver receives a signal such as position information transmitted by the transmission device 17 has been described. However, the wheel assembly 10 and the transmission device 17 of the present invention may be used for a plurality of movements such as a bicycle. By configuring the receivers 43 of the plurality of persons to receive signals such as position information from the transmitting devices 17 of the plurality of mobile bodies when the person goes out using the body, It is also possible to use it for the purpose of confirming the position.

  Various numerical values, dimensions, materials, routines, and the like in the above-described embodiments are merely examples, and can be appropriately selected depending on the application.

10 Wheel assembly 11 Hub shaft 12 Spoke 13 Rim 14 Tube 15 Tire 17 Transmitter 19 Valve 21, 53 Valve stem 23 Rim nut 24 Plunger 25 Cap nut 29 Support 29A Through hole 31 Transmitter 32 Receiver 33 Transmitter / receiver system 34 Transmitter 35 Battery 37 Generator 39 Charge / Discharge Control Circuit 41 Microcomputer 43 Receiver 45 Remote Controller 47 Spacer 49 Stopper 51 Position Identification Means 55 Hole

Claims (12)

A transmission device attachable to the valve of a wheel assembly for a moving body, comprising: a fluid chamber; and a valve capable of maintaining and blocking fluid communication between the fluid chamber and the outside.
The valve includes a valve body and a valve body holding means attached to the valve to hold the valve body,
The transmission device includes a support body that can be fixed to the valve, and a transmission means that transmits the notification signal that is held by the support body,
The transmitting device according to claim 1, wherein the support body can be detached from the valve only when the valve body holding means is detached from the valve. The wheel assembly includes a wheel, and a tire portion mounted on an outer periphery of the wheel and including the fluid chamber,
The valve includes a hollow cylindrical body that fluidly communicates between the inside of the fluid chamber and the outside, and the valve body is held at a predetermined blocking position in the hollow cylindrical body so that the hollow cylindrical body is The valve body holding means is attached to the hollow cylindrical body and fixed at a predetermined closed position to hold the valve body at the blocking position in the hollow cylindrical body. The transmitting device according to claim 1, wherein the transmitting device is capable of operating.   The transmission device according to claim 2, wherein the valve body holding means is a ring body that is fitted to a predetermined position on an outer periphery of the hollow cylindrical body and can hold the valve body in the blocking position. .   The transmitting device according to claim 3, wherein the support has a hole portion having an inner diameter larger than an outer diameter of the hollow cylindrical body and smaller than an outer diameter of the valve body holding means.   The transmitting device according to claim 2, wherein the support body is integrated with the valve body holding means.   6. The transmission device according to claim 1, wherein the notification signal is a radio wave signal, an optical signal, an acoustic signal, an odor, or a combination thereof.   The transmission device according to claim 1, wherein the notification signal includes information regarding individual identification information or a position of the transmission device. A plurality of the wheel assemblies;
The transmitting device includes a support that can be fixed to one of the valves;
Transmitting means for transmitting a notification signal held by the support;
A dummy body that can be fixed to another valve among the valves,
The transmitting device according to any one of claims 1 to 7, wherein the support body and the dummy body are removable only when the valve body holding means is detached from the valve. Mounted on a wheel assembly for a moving body comprising a wheel, a tire portion mounted on the outer periphery of the wheel and including a fluid chamber, and a valve capable of maintaining fluid communication between the inside and outside of the fluid chamber and switching between cutoffs. A transmission device,
The valve is a hollow cylindrical body that fluidly communicates between the inside of the fluid chamber and the outside, and is held at a predetermined blocking position in the hollow cylindrical body, thereby blocking fluid movement in the hollow cylindrical body. A valve body, and valve body holding means attached to the hollow cylindrical body and capable of holding the valve body in the blocking position in the hollow cylindrical body,
The transmitting device includes a support that can be fixed to the valve;
Transmitting means for transmitting a notification signal held by the support,
The valve body holding means is a ring body that can be fitted to a predetermined position on the outer periphery of the hollow cylindrical body and hold the valve body in the blocking position.
The transmission device according to claim 1, wherein the support body has a hole portion having an inner diameter larger than an outer diameter of the hollow cylindrical body and smaller than an outer diameter of the valve body holding means. A plurality of the wheel assemblies;
The transmitting device includes a support that can be fixed to one of the valves;
Transmitting means for transmitting a notification signal held by the support;
A dummy body that can be fixed to another valve among the valves,
The transmission device according to claim 9, wherein the support body and the dummy body have a hole portion having an inner diameter larger than an outer diameter of the hollow cylindrical body and smaller than an outer diameter of the valve body holding means. Wheels,
A tire portion mounted on the outer periphery of the wheel and enclosing a fluid chamber;
A valve capable of maintaining fluid communication between the inside and outside of the fluid chamber and switching between shut-off;
A transmitter capable of being fixed to the valve and capable of transmitting a notification signal;
Including
The valve is a hollow cylindrical body that allows fluid communication between the inside of the fluid chamber and the outside, and a valve body that can be held at a predetermined blocking position in the cylindrical body to block fluid movement in the cylindrical body. And a valve body holding means for holding the valve body at the blocking position in the hollow cylindrical portion and maintaining a fixed state of the transmitting device to the valve. A transmission device attachable to the valve of a wheel assembly for a moving body, comprising: a fluid chamber; and a valve capable of maintaining and blocking fluid communication between the fluid chamber and the outside.
The transmission device includes a support body that can be fixed to the valve, transmission means that transmits the notification signal that is held by the support body, and is attached to the valve and is fixed to a predetermined closed position to Fixing maintenance means for maintaining the closed state and fixing the support to the valve;
The transmitting device according to claim 1, wherein the support is removable only when the fixing and maintaining means is detached from the closed position.

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