TWI728297B - Air nozzle tire monitoring device - Google Patents

Abstract

The present invention provides an air nozzle tire monitoring device disposed on a tire or a tire rim to monitor the tire condition. The air nozzle tire monitoring device comprises an air nozzle and a sensor module. The air nozzle comprises a main body, a metal tube combined with one side of the main body, and a valve disposed inside of the metal tube. The sensor module is disposed on the inner or the outer side of the main body, and electrically connecting to the metal tube. The sensor module comprises a sensor, a communication unit, and a controller connected to the sensor and the communication unit. Further, the metal tube is an antenna unit for the communication unit for coupling with a reader device.

Description

Air nozzle type tire monitoring device

The invention relates to a tire monitoring device, in particular a valve type tire monitoring device, which can be used as a tire valve to simultaneously monitor the tire condition.

The automobile industry is advancing day by day, and many device structures are equipped with automatic monitors to monitor whether the car can maintain good operating performance, protect driving safety, and avoid driving accidents. Among them, the tire pressure status is one of the important monitoring items. Starting from July 1, 2016, Taiwan has amended the 68th item of the vehicle safety standard. Newly manufactured trucks and passenger cars must be equipped with Tire-pressure monitoring system (TPMS), when the absolute detected tire pressure is reduced to 20%, the system must light up to warn driving, and if the new factory vehicle does not have additional tire pressure Detection device, the vehicle is not allowed to be licensed on the road.

In general tire pressure detection devices, when the vehicle starts, a notification symbol will be generated on the dashboard. When the tire pressure drops to 20%, the system will light up in a short time to warn the driver that the tire pressure is insufficient. Currently, tire pressure detection devices can be divided into direct and indirect types according to different measurement methods.

The indirect tire pressure detector is a tire pressure detection auxiliary system set by the car factory. Its operating principle is to compare the speed difference of the four tires of the vehicle when driving through the wheel speed sensor of the ABS/EPS system. An insufficient tire pressure causes the tires When the outer diameter is reduced, the system will signal an abnormal tire condition. Because it does not directly measure the air pressure inside the tire, it is called an indirect tire pressure detector (Wheel-Speed Based TPMS, WSB TPMS). However, indirect tire pressure detectors cannot provide tire pressure data, only warnings about abnormal tire pressures. The direct tire pressure detector is to directly install tire pressure sensors in the four tires of the vehicle, and through the receiver system, the tire pressure data can be directly displayed on the display on the receiver, which is easy to read ; Because the tire pressure data of each tire can be directly read, the response time is faster and the reliability is high. This type of tire pressure detector is called a direct pressure sensor (Pressure-Sensor Based TPMS, PSB TPMS). ).

There are different types of direct tire pressure detectors on the market. The most common one is the tire pressure detection device directly installed on the valve. The car owner can purchase the valve installed on the four tires. The upper is used as a valve cover, and directly detects the tire pressure of the tire.

However, the tire pressure detection device outside the tire is installed on the tire valve. Since it is not fixed in the tire, it is easy to be damaged, removed and stolen by the intentional person. In addition, after long-term use, it is easy to be exposed to wind and sun due to exposure. The structure is deformed and embrittled when exposed to the sun, and it is also easy to be shaken and fall when the tire rotates at high speed. In addition, in addition to tire pressure as an important monitoring item, tire speed, dynamic balance and static balance and other vehicle conditions are also important monitoring items.

In view of the above-mentioned drawbacks, the purpose of the present invention is to provide a valve-type tire monitoring device, which is arranged on a tire or rim to monitor the tire condition. The valve-type tire monitoring device includes a valve and a sensing module. The gas nozzle includes a The body, a metal outer tube connected to one side of the main body, and a gas nozzle valve arranged inside the metal outer tube. The sensing module is arranged on the inside or outside of the main body and is electrically connected to the metal outer tube. The sensing module includes a sensor, a communication unit, and a controller connected to the sensor and the communication unit. Wherein, the metal outer tube of the gas nozzle serves as the antenna unit of the communication unit and is coupled to a reading device.

Another object of the present invention is to provide a valve-type tire monitoring device, which is arranged on a tire or a rim to monitor the tire condition. The valve-type tire monitoring device includes a valve and a sensing module. The air nozzle system includes a main body, a metal outer tube connected to one side of the main body, and an air nozzle valve arranged on the inner side of the metal outer tube. An antenna unit is arranged on the metal outer tube. The sensing module is arranged on the inside or outside of the main body and is electrically connected to the antenna unit. The sensing module includes a sensor, a communication unit, and a controller connected to the sensor and the communication unit. Wherein, the communication unit is electrically connected to the antenna unit outside the metal outer tube to be coupled to a reading device.

Further, the gas nozzle includes a set of insulating air-tight gaskets arranged on the metal outer tube, and a set of locking members arranged on the metal outer tube on the other side of the insulating air-tight gasket, and the locking members are connected with The insulating airtight gasket presses the rim from both sides to fix the metal outer tube on the rim.

Further, the locking member is a nut, and the metal outer tube has a threaded portion for locking the nut.

Further, the insulating airtight gasket includes a A limiting section on the wall surface and a protruding section for penetrating into the fixing hole of the rim by pressing, the length of the protruding section is greater than the length of the fixing hole so as to protrude from the other end of the fixing hole for the nut Lean against to keep the nut and the other side wall surface of the rim at a proper distance.

Further, the sensor is a vehicle sensor.

Further, the metal outer tube is provided with a threaded portion, and the threaded portion is used for setting a valve cover.

Further, the main body of the air nozzle has an air chamber in communication with the inner cavity of the tire and for the sensor to be installed, and the pressure detecting end of the sensor is located in the air chamber for monitoring The air pressure of the tire.

Further, the communication unit is a passive radio frequency identification tag (Radio Frequency Identification, RFID), GSM module, Bluetooth module or Wifi module.

Compared with the conventional tire monitoring device, the air nozzle type tire monitoring device of the present invention has the following advantages:

1. In the air nozzle type tire monitoring device of the present invention, the antenna unit is replaced by the metal outer tube of the air nozzle or arranged on the outside of the metal outer tube of the air nozzle, which can effectively avoid the problem of the tire or rim shielding the signal and ensure the integrity of the signal Sex.

2. The air nozzle type tire monitoring device of the present invention is an in-tire detector, which is less likely to be picked up and stolen by a deliberate person or the material is deteriorated due to wind and sun than the general tire monitoring device outside the tire. On the one hand, the integration of the tire valve can reduce the difficulty of operation.

3. The air nozzle type tire monitoring device of the present invention does not require a battery, and because of its small size and light weight, it will not shake when installed on the rim due to its large size and weight, which will affect the operation of the tire.

4. The air nozzle type tire monitoring device of the present invention can effectively monitor tire conditions and ensure driving safety.

100‧‧‧Air nozzle type tire monitoring device

10‧‧‧Air nozzle

11‧‧‧Main body

111‧‧‧Air Chamber

12‧‧‧Metal outer tube

121‧‧‧Air valve

122‧‧‧First thread

123‧‧‧Second thread

13‧‧‧Antenna unit

14‧‧‧Insulating airtight gasket

141‧‧‧Limiting segment

142‧‧‧Protruding section

15‧‧‧Lock firmware

16‧‧‧Valve cover

20‧‧‧Sensing Module

21‧‧‧Sensor

22‧‧‧Communication Unit

23‧‧‧Controller

24‧‧‧Power Supply

30‧‧‧Tire

31‧‧‧Inner chamber

40‧‧‧Rim

41‧‧‧Fixed hole

42‧‧‧One side wall

43‧‧‧The other side wall

200‧‧‧Reading device

Figure 1 is a schematic diagram (1) of the use state of the air nozzle type tire monitoring device of the present invention.

Fig. 2 is a schematic diagram of the appearance of the air nozzle type tire monitoring device of the present invention.

Fig. 3 is a block diagram of the air nozzle type tire monitoring device of the present invention.

Fig. 4 is a schematic diagram of the assembly of the air nozzle type tire monitoring device of the present invention.

Fig. 5 is a schematic diagram (2) of the use state of the air nozzle type tire monitoring device of the present invention.

The following description of the present invention is that a person skilled in the art can easily understand the necessary technology of the invention, and as long as it does not violate the spirit and scope of the invention, the invention can be variously changed and modified to adapt to different uses and conditions. In this way, other embodiments are also included in the scope of the patent application.

Please refer to "Figure 1" and "Figure 2", which are respectively a schematic diagram (1) and a schematic diagram of the appearance of the valve-type tire monitoring device of the present invention. As shown in the figure: the valve-type tire monitoring device 100 of the present invention mainly includes A gas nozzle 10 and a sensing module 20. The gas nozzle 10 includes a body portion 11, a metal outer tube 12 joined to one side of the body portion 11, and a metal outer tube 12 The inner gas nozzle valve 121. The sensing module 20 is disposed in the air chamber 111 of the main body 11. In another preferred embodiment, the sensor 20 can be arranged on the outer side of the main body 11 and directly exposed in the inner cavity 31 of the tire 30, which is not limited in the present invention.

Please also refer to "Figure 3", which is a block diagram of the air nozzle type tire monitoring device of the present invention. As shown in the figure, the sensing module 20 includes a sensor 21, a communication unit 22, and a The sensor 21 and the controller 23 of the communication unit 22.

The metal outer tube 12 has an air nozzle valve 121 inside it to stop the air flow when air is injected to increase the tire pressure in the inner cavity 31 of the tire. The metal outer tube 12 has a first threaded portion 122, and the first threaded portion 122 is used to provide a valve cover 16.

In FIG. 3, the antenna unit 13 can be implemented on the metal outer tube 12 in a variety of different ways. In a preferred embodiment, the metal outer tube 12 of the gas nozzle 10 as a whole can be used as the antenna of the communication unit 22 to be coupled to the reading device 200 to receive signals from the reading device 200; in another preferred embodiment In one aspect, the antenna unit 13 can also be combined on the outer circumference of the gas nozzle 10 through electroplating, electroless plating, or physical bonding to serve as an antenna; in another preferred embodiment, the metal outer tube 12 Part of the structure (for example, the thread for locking the valve cover 4) can be made of conductive material and attached to the metal outer tube 12 as an antenna.

In a preferred embodiment, the sensor 21 can be a vehicle sensor that senses the tire condition, such as but not limited to a tire pressure sensor, a temperature sensor, and a sound sensor. , Multi-axis sensors, acceleration sensors, or gravity sensors, etc., to detect tire pressure, temperature, tire rotation sound and noise (Noise), Tire speed, tire dynamic balance or tire static balance, etc. are not limited in the present invention; among them, by monitoring tire rotation sound and noise (Noise) can be used to determine tire wear, and monitor tire pressure, tire speed, tire Dynamic balance or static tire balance can be used to understand whether the tire can maintain the balance and stability of the vehicle body during driving. In the implementation of the tire pressure sensor, the sensor 21 can be, for example, but not limited to a capacitor. Pressure sensors, resistance pressure sensors, piezoelectric sensors, or other similar air pressure sensors are not limited in the present invention. Wherein, the sensing module 20 is further provided with a power supply 24 which is electrically connected to the communication unit 22 and the controller 23.

The communication unit 22 is electrically connected to the antenna unit 13, and is coupled to the reading device 200 via the antenna unit 13 in a wireless transmission manner, so that the reading device 200 can access the data of the controller 23 to collect Tyre data. In a preferred embodiment, the communication unit 22 may be, but is not limited to, a passive radio frequency identification device (Radio Frequency Identification, RFID), a GSM module, a Bluetooth module or a Wifi module, for example, in the present invention According to the calculation method of transmission, the communication unit 22 can be, but is not limited to, a time division multiplexing (TDMA) receiving transmitter, a code division multiple access (CDMA) receiving transmitter, and a stroke multiplexing ( FDMA) receiving transmitter, Orthogonal Frequency Division Multiplexing (OFDM) receiving transmitter, or Orthogonal Frequency Division Multiplexing Multiple Access (OFDMA) receiving transmitter, and the present invention is not limited to these; the reading device 200 utilizes high The high-frequency electromagnetic wave transmits signals (ie, control signals) to the antenna unit 13. After receiving the high-frequency electromagnetic wave, the antenna unit 13 and its front-end circuit will form a resonance loop to generate a resonance current to the power supply 24. The supplier 24 provides power to enable the controller 23 and receive the signal. After the controller 23 receives the incoming signal, the response signal is transmitted back to the reading device 200 in the reverse direction.

The power supply 24 can be connected to the communication unit 22 or the control The controller 23 is co-constructed as a wafer, which is not limited in the present invention. In a preferred embodiment, the power supply 24 can be installed at the front end of the communication unit 22 or the controller 23 to obtain resonance current, and preprocess the resonance current before feeding it to start and enable the The communication unit 22, the controller 23, and the sensor 21. In a preferred embodiment, the power supply 24 can be, for example, a filter, an AC-to-DC converter, a transformer, or other similar pre-processing circuits, which is not limited in the present invention.

The controller 23 is electrically connected or coupled to the communication unit 23, the power supply 24, and the sensor 21 to coordinate the operations of the devices. In a preferred embodiment, the controller 23 may be a microprocessor (Micro Processor), which is activated after being enabled by the power supply 24, and executes the corresponding algorithm. Wherein, the controller 23 and the sensor 21, the communication unit 22, or the power supply 24 can be co-constructed as a single chip, or implemented on different chips, which is not limited in the present invention.

The following is a description of a preferred embodiment of the structural features of the valve-type tire monitoring device 100 of the present invention. Please refer to "Figure 4", which is a schematic diagram of the assembly of the valve-type tire monitoring device of the present invention, as shown in the figure. : In this embodiment, the metal outer tube 12 as a whole is used as an antenna unit 13 to receive electromagnetic wave signals from the reading device 200 and electrically connected to the communication unit 22; when the antenna unit 13 receives the reading device 200 After the electromagnetic wave signal is generated, a resonance current is generated through the resonance circuit to enable the controller 23, so that the reading device 200 can access the tire condition data of the controller 23. In order to avoid signal shielding, the antenna unit 13 of the metal outer tube 12 passes through the fixing hole 41 on the rim 40 to prevent the rim 40 of metal material or the reinforced metal mesh in the tire from shielding the antenna unit 13 to ensure the signal Transceiving strength. Among them, in the implementation of the tire pressure detector, the sensor 21 The pressure detecting end of is located in the inner cavity 31 between the rim 40 and the tire 30 to monitor the tire pressure data in the inner cavity 31.

The "located in the inner cavity 31" specifically refers to the pressure detecting end of the sensor 21 and the tire inner cavity 31 in the same closed space. Therefore, regardless of the sensor 21 The pressure detecting end of is directly arranged in the inner cavity 31 of the tire, or is connected to the inner cavity 31 via an air passage or an air path, which is within the equal scope of the present invention.

In order to achieve the air-tight effect, while avoiding the interference and noise caused by the contact between the metal outer tube 12 and the rim 40, the air nozzle 10 includes a set of insulating air-tight gaskets 14 arranged on the metal outer tube 12, and a A locking member 15 sleeved on the metal outer tube 12 opposite to the insulating air-tight gasket 14 is pressed against the rim 40 from both sides of the locking member 15 and the insulating air-tight gasket 14 so that the metal outer tube 12 is fixed on the rim 40. The locking member 15 can be a nut in a preferred embodiment, and the metal outer tube 12 has a second threaded portion 123 for locking the nut, and the nut is locked to the second thread. When the part 123 is on, it can provide force and reaction force to both sides of the metal outer tube 12 to fix the metal outer tube 12 on the rim 40.

In order to avoid noise and signal interference generated by the rim 40, the insulating air-tight gasket 14 includes a limiting section 141 for abutting against a side wall surface 42 of the rim 40, and a stopper 141 that penetrates the rim 40 by pressing. The protruding section 142 of the fixing hole 41, the length of the protruding section 142 is greater than the length of the fixing hole 41 so as to protrude from the other end of the fixing hole 41 for the nut to abut to make the nut and the rim 40 another The side wall surface 43 maintains an appropriate distance.

In a preferred embodiment, the nut system can be divided into two sections. The upper part is polygonal, so that the nut can be locked by turning it with a clamp or wrench during assembly. The lower section is circular in order to contact the side of the protruding section 142 of the insulating airtight gasket 14 to closely fit and prevent loosening.

In another preferred embodiment, the insulating air-tight gasket can also be an embodiment in which both ends are provided with a limited section (not shown), which is used for riveting into the fixing hole on the rim from both ends The urgent configuration is airtight, which is not limited in the present invention.

Please also refer to "Figure 5", which is a schematic diagram (2) of the use state of the valve-type tire monitoring device of the present invention, as shown in the figure: When the valve-type tire monitoring device 100 of the present invention is used in a vehicle, it can be installed separately On the rims of the four tires of the vehicle, the condition of each tire of the vehicle is monitored respectively, and the reading device 200 can also be used in integration with a general vehicle condition monitoring system.

The reading device 200 is a wireless identification reader, which includes an antenna, a display, a control module, and a recording module; the antenna can receive the wireless signal of the communication unit 22, and at the same time send a control signal for the communication unit 22 to receive ; The display can display the values received by the antenna to the user to read to understand the current four tire conditions of the vehicle; the recording module can be used to record the tire monitoring parameters received by the antenna to evaluate the tire condition ; The control module is a central processing system that can integrate the operations of the antenna, display, and recording module. In addition, the control module can be further equipped with an early warning module. When the monitored tire monitoring parameters are abnormal, Through the output interface, a warning signal is sent to notify the user. For example, the warning threshold of general tire pressure can be reduced to 20%.

In a preferred embodiment, the communication method of the reading device 200 can be, for example, but not limited to, passive radio frequency identification (RFID), GSM, Bluetooth, or Wifi, and the present invention is not limited thereto. Etc.; its communication protocol can be time division multiplexing (TDMA), code division multiple access (CDMA), frequency shift Multiplexing (FDMA), Orthogonal Frequency Division Multiplexing (OFDM), or Orthogonal Frequency Division Multiplexing Multiple Access (OFDMA), etc., and the present invention is not limited to these methods; the remote end of the reading device 200 provides electromagnetic waves Can controller 23. The controller 23 of each valve type tire monitoring device 100 can be collectively or one by one to obtain tire condition data of each valve type tire monitoring device 100.

To sum up, in the air nozzle type tire monitoring device of the present invention, the antenna unit is replaced by the metal outer tube of the air nozzle or arranged outside the metal outer tube of the air nozzle, which can effectively avoid the problem of tire or rim shielding signals, and ensure The integrity of the signal. In addition, the air nozzle type tire monitoring device of the present invention is an in-tire detector, which is less likely to be picked up and stolen by a deliberate person or deteriorated due to wind and sun than a general tire monitoring device outside the tire. On the one hand, the integration of the tire valve can reduce the difficulty of operation. Furthermore, the air nozzle type tire monitoring device of the present invention does not need to be equipped with a battery, and because of its small size and light weight, it will not shake when installed on the rim due to the large size and weight, which will affect the operation of the tire. Furthermore, the air nozzle type tire monitoring device of the present invention can effectively monitor the tire condition and ensure driving safety.

The present invention has been described in detail above, but what has been described above is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention, that is, everything made in accordance with the scope of the patent application of the present invention is equal Changes and modifications should still fall within the scope of the patent of the present invention.

100‧‧‧Air nozzle type tire monitoring device

10‧‧‧Air nozzle

11‧‧‧Main body

121‧‧‧Air valve

122‧‧‧First thread

123‧‧‧Second thread

14‧‧‧Insulating airtight gasket

15‧‧‧Lock firmware

16‧‧‧Valve cover

30‧‧‧Tire

31‧‧‧Inner chamber

40‧‧‧Rim

41‧‧‧Fixed hole

42‧‧‧One side wall

43‧‧‧The other side wall

200‧‧‧Reading device

Claims (8)

A valve-type tire monitoring device is arranged on a tire or rim to monitor the tire condition. The valve-type tire monitoring device includes: an air nozzle, which is integrally formed, and the air nozzle includes a body part and a The metal outer tube on one side of the main body part, and a gas nozzle valve arranged inside the metal outer tube; and a sensing module, which is arranged inside or outside the main body part, and is electrically connected to the metal outer tube The sensing module includes a sensor, a communication unit, and a controller connected to the sensor and the communication unit, wherein the metal outer tube of the gas nozzle serves as the antenna unit of the communication unit Coupled to a reading device, the communication unit or the controller further includes a power supply connected to the antenna, and the antenna unit and its front-end circuit form a resonance loop for generating a resonance current to the power supply. A valve-type tire monitoring device is arranged on a tire or rim to monitor the tire condition. The valve-type tire monitoring device includes: an air nozzle, which is integrally formed, and the air nozzle includes a body part and a The metal outer tube on one side of the main body part, and a gas nozzle valve arranged inside the metal outer tube, an antenna unit is arranged on the metal outer tube; and a sensing module is arranged inside the main body part Or outside, and electrically connected to the antenna unit, the sensing module includes a sensor, a communication unit, and a controller connected to the sensor and the communication unit, wherein the communication unit is electrically connected The antenna unit which is connected to the outer side of the metal outer tube to be coupled to a reading device, the communication unit or the controller further includes a connection to the antenna The power supply, the antenna unit and its front-end circuit form a resonance loop for generating resonance current to the power supply. The air nozzle type tire monitoring device described in item 1 or 2 of the scope of patent application, wherein the air nozzle includes a set of insulating air-tight cushions arranged on the metal outer tube, and a set of opposite The locking member on the other side of the insulating air-tight gasket, the locking member and the insulating air-tight gasket press the rim from both sides to fix the metal outer tube on the rim. As described in item 3 of the scope of patent application, the valve-type tire monitoring device, wherein the locking member is a nut, and the metal outer tube has a threaded portion for locking the nut. For the air nozzle type tire monitoring device described in item 4 of the scope of the patent application, the insulating air-tight cushion includes a limiting section for abutting against the wall surface of the rim, and a restricting section for penetrating into the wheel by pressing. The protruding section of the fixing hole of the ring, the length of the protruding section is greater than the length of the fixing hole so as to protrude from the other end of the fixing hole for the nut to abut to keep the nut and the other side wall surface of the rim at a proper distance . In the air nozzle type tire monitoring device described in item 1 or 2 of the scope of patent application, the sensor is a vehicle sensor. The valve type tire monitoring device described in item 1 or 2 of the scope of patent application, wherein the metal outer tube is provided with a threaded part, and the threaded part is used for setting a valve cover. The air nozzle type tire monitoring device described in item 1 or 2 of the scope of patent application, wherein the body of the air nozzle has an air chamber in the body part, and the air chamber communicates with the inner cavity of the tire and provides for the sensing The pressure detection end of the sensor is located in the air chamber to monitor the air pressure of the tire.

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