Tire valve with tire pressure display

Abstract

The utility model provides a tire valve with tire pressure display, which relates to the technical field of tire pressure monitoring and comprises a shell main body, a transparent shell is mounted on the outer side of the shell main body, a battery shell is arranged in the shell main body, a plurality of button battery bodies are arranged in the battery shell, and the button battery bodies are arranged in the shell main body. A sealing ring is arranged below the battery shell, a pressure sensor is installed at the bottom of the sealing ring, and the pressure sensor and the display screen are integrated on the air tap, so that a user can check the tire pressure at any time before riding, in the inflation process or in the riding process, and timely find the abnormal conditions of the tire pressure, such as too low or too high tire pressure; the air tap is simple in structure and convenient to use, inflation and deflation can be achieved without disassembling the air tap, tire burst or other potential safety hazards caused by the tire pressure problem can be effectively avoided, and the personal safety of a rider is guaranteed especially under the conditions of high-speed riding or complex road conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure monitoring, in particular to a tire air valve with a tire pressure display. Background Art

[0002] With the increasing popularity of bicycles and electric vehicles, tire pressure has a crucial impact on riding safety and comfort. For bicycle and electric vehicle users, traditional tire pressure monitoring methods rely on regular visits to repair shops or manual measurement using simple mechanical tire pressure gauges.

[0003] Mountain bikes typically use Schrader valves, often referred to as Schrader valves, a type of inflator widely used on tires of all modern motor vehicles. Road bikes typically use Presta valves, often referred to as Presta valves, and are mostly used on road bikes. This type of valve consists of a copper tube with external threads, a captive valve screw, a valve cap, and a nut that secures the valve to the rim.

[0004] In actual usage scenarios, bicycles and electric vehicles often face complex road conditions, including bumpy roads and different temperature environments. These factors will cause changes in tire pressure. Moreover, since bicycles and electric vehicles usually do not have a complete tire pressure monitoring system like cars, it is difficult for users to detect abnormal tire pressure in a timely manner. For example, low tire pressure will increase riding resistance, cause excessive tire wear, and may even cause the risk of tire blowout during riding. Excessive tire pressure will reduce riding comfort and controllability.

[0005] Some existing small tire pressure monitoring devices either require complicated installation steps or are expensive, which is not convenient and economical for bicycle and electric vehicle users. In addition, some monitoring devices do not have an intuitive display method and need to be connected to an additional display device, which is not practical during riding. At the same time, the market currently lacks a tire pressure monitoring solution that can adapt to both the two main valve types of Fascher valves and Schrader valves and can work reliably in complex riding environments. Therefore, a simple, practical and low-cost tire pressure monitoring solution specifically for bicycles and electric vehicles is needed.

[0006] Therefore, we propose a tire valve with tire pressure display. Utility Model Content

[0007] The purpose of the present utility model is to solve the shortcomings of the existing technology. Some existing small tire pressure monitoring devices either require complicated installation steps or are expensive, which are not convenient and economical for bicycle and electric vehicle users. In addition, some monitoring devices do not have an intuitive display method and need to be connected to an additional display device, which is not practical during riding. At the same time, there is currently a lack of a tire pressure monitoring solution on the market that can adapt to the two main types of valves, Fascher and Schweizer, and can work reliably in complex riding environments.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] A tire valve with a tire pressure display includes a housing body, a transparent housing mounted on the outside of the housing body, a battery housing disposed within the housing body, a plurality of button cell batteries disposed within the battery housing, a sealing ring disposed below the battery housing, and a pressure sensor mounted at the bottom of the sealing ring;

[0010] A connection connector is installed at the bottom of the housing body, and a tire pressure display device is installed inside the housing body and on the right side of the battery housing. The tire pressure display device is connected to the pressure sensor via a wire, and the tire pressure display device is used to receive a signal from the pressure sensor and display it in real time;

[0011] The tire pressure display device includes a circuit main board, buttons are installed on the circuit main board, and a display screen is provided at the connection of the circuit main board.

[0012] As a preferred solution of the present invention, the tire pressure display device further includes a signal conditioning circuit, a microcontroller and a data bus.

[0013] As a preferred solution of the present invention, the signal conditioning circuit includes an amplifier circuit and a filter circuit. The amplifier circuit adopts OP07, and the filter circuit adopts a passive filter to remove high-frequency noise and interference in the signal.

[0014] As a preferred solution of the present invention, the microcontroller adopts the STM32L4 series, which is used for data acquisition control, configures the analog-to-digital conversion module, sets the acquisition frequency, accurately converts the analog signal of the pressure sensor into a digital signal, and performs data processing and calculation at the same time, processing the pressure data according to the characteristic parameters of the pressure sensor.

[0015] As a preferred solution of the present invention, the data bus is used to send the information processed by the microcontroller to the display screen in real time, and the display screen is used to display the pressure value in the tire.

[0016] As a preferred solution of the present invention, the battery housing is used to isolate the button battery bodies from the high-pressure gas and moisture in the tire.

[0017] As a preferred solution of the present invention, the transparent shell is made of acrylic board.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] In the utility model, the pressure sensor and display screen integrated in the air nozzle allow the user to check the tire pressure at any time before riding, during the inflation process or during riding, and promptly detect abnormal tire pressure, such as too low or too high tire pressure. Inflation and deflation can be achieved without removing the air nozzle, which can effectively avoid tire blowouts or other safety hazards caused by tire pressure problems, and ensure the personal safety of riders, especially when riding at high speeds or on complex road conditions.

[0020] A display screen is directly installed on the valve, making the tire pressure information clear at a glance. Users do not need to carry additional tire pressure measuring tools or connect other devices to obtain tire pressure data. Whether preparing for daily riding or taking a short break, the tire pressure can be easily checked. This convenient visual design greatly improves user convenience.

[0021] The tire pressure display valve has two forms, which can perfectly adapt to both Presta valves and Schrader valves. Whether it is the Presta valve commonly used in road bicycles or the Schrader valve widely used in electric vehicles and mountain bikes, you can choose freely. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the inverted structure of a tire valve with tire pressure display provided by the utility model;

[0023] Figure 2 A schematic diagram of the unfolded transparent housing of a tire valve with tire pressure display provided by the utility model;

[0024] Figure 3 A schematic diagram of the installation position of the circuit board of a tire valve with tire pressure display provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the front cross-sectional structure of the main body of a tire valve with tire pressure display provided by the utility model;

[0026] Figure 5 A schematic diagram of the operating principle of a tire valve with tire pressure display provided by the utility model;

[0027] Figure 6 A schematic diagram of a Schrader valve for installing a tire valve with tire pressure display provided by the present invention;

[0028] Figure 7 A schematic diagram of a tire valve with a tire pressure display provided by the utility model being integrally installed on a bicycle.

[0029] Legend: 1. Housing body; 2. Presta valve core; 3. Transparent housing; 4. Circuit board; 5. Display screen; 6. Button; 7. Battery housing; 8. Button battery body; 9. Sealing ring; 10. Pressure sensor; 11. Connector; 12. Wire; 13. Signal conditioning circuit; 14. Filter circuit; 141. Amplification circuit; 15. Microcontroller; 16. Data bus. DETAILED DESCRIPTION

[0030] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to relevant references, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] Example

[0035] like Figure 1-7As shown, the present invention provides a technical solution: the outer shell 1, serving as the core support structure of the entire electronic tire pressure gauge, is made of high-strength and lightweight engineering plastic. Its design fully considers the installation space and layout rationality of the internal components. The transparent outer shell 3, mounted on the outside, is made of acrylic board, which has high transparency, good weather resistance, and mechanical strength. The transparency of acrylic board ensures that the user can clearly view the contents of the tire pressure display device. Its weather resistance prevents discoloration and deformation in various complex outdoor riding environments, such as high temperature, humidity, and ultraviolet radiation, ensuring long-term stable visibility.

[0036] By selecting appropriate materials, the functions of protecting internal components and facilitating users to view displayed information are achieved. The transparent shell 3 uses acrylic board to utilize its physical and chemical properties to meet the requirements of outdoor use.

[0037] The battery housing 7 is a sealed structure specially designed to accommodate several button battery bodies 8. Its interior has been finely processed and is equipped with a slot that precisely matches the shape and size of the button battery to ensure that the battery can remain stable under severe vibration during riding. The battery housing 7 is made of an insulating and chemically resistant material, such as polycarbonate. This material can effectively isolate the button battery body 8 from the external high-pressure gas and possible moisture in the tire. If the button battery comes into contact with moisture, a short circuit may occur, and the high-pressure gas may cause physical damage to the battery housing 7, thereby affecting the normal operation of the entire electronic tire pressure gauge.

[0038] By utilizing the properties of insulating and corrosion-resistant materials such as polycarbonate, the battery is protected from adverse external factors and its normal power supply function is maintained.

[0039] The sealing ring 9 is located below the battery housing 7. It is made of a rubber material with high elasticity and aging resistance. Its function is to form a reliable sealing environment between the pressure sensor 10 and the battery housing 7 to prevent high-pressure gas, moisture or impurities in the tire from entering the battery housing 7 and other internal spaces of the electronic tire pressure gauge.

[0040] The pressure sensor 10 is installed at the bottom of the sealing ring 9. It is a high-precision, high-sensitivity MEMS (micro-electromechanical system) pressure sensor 10. The sensor's sensing diaphragm is in direct contact with the gas inside the valve. When the air pressure in the tire acts on the sensing diaphragm, the diaphragm will undergo a slight deformation, thereby causing changes in the internal electrical parameters of the sensor (such as resistance, capacitance, etc.), thereby measuring the tire pressure.

[0041] The sealing ring 9 uses the elasticity and sealing properties of rubber to achieve waterproof, airproof and dustproof functions. The pressure sensor 10 measures pressure by converting the deformation of the sensing diaphragm into an electrical signal based on MEMS technology.

[0042] The connection joint 11 is installed at the bottom of the shell body 1. It is the key part of the connection between the entire electronic tire pressure gauge and the air valve. The design of the connection joint 11 is optimized according to the different structural characteristics of the French valve and the Schrader valve. Please refer to the attached instructions. Figure 1 and 6 For Prefabric valves, the connecting joint 11 is provided with a slender channel and a sealing structure adapted to the Prefabric valve, which can be tightly fitted on the Prefabric valve to ensure the smooth flow and sealing of the gas channel. For American valves, the connecting joint 11 has a wider opening and a corresponding clamping device to firmly connect the American valve to prevent it from loosening during use. This design allows the electronic tire pressure gauge to select the corresponding connecting joint 11 according to the user's vehicle valve type, making it more convenient to install on different types of gas valves to meet the needs of different users.

[0043] By designing different connection methods based on the different structures of Fascher valves and Schrader valves, a stable and sealed connection between the electronic tire pressure gauge and different air nozzles is achieved, ensuring the accuracy of tire pressure measurement.

[0044] The tire pressure display device is located inside the shell body 1 and on the right side of the battery shell 7. It is the information processing and display center of the entire electronic tire pressure gauge, including important components such as the circuit board 4, buttons 6, display screen 5, signal conditioning circuit 13, microcontroller 15 and data bus 16.

[0045] The circuit board 4 serves as a connection carrier for various components and adopts a multi-layer printed circuit board (PCB) design, which has good electrical performance and reasonable wiring. The button 6 is installed on the circuit board 4. The user can perform various operations through the button 6, such as turning on / off the device, switching the display unit (such as kPa and bar), setting the tire pressure alarm threshold, etc. The display screen 5 is connected to the circuit board 4 through a sophisticated welding process. It adopts high-contrast, low-power liquid crystal display 5 (LCD) or organic light-emitting diode display 5 (OLED) technology to clearly and stably display the pressure value in the tire.

[0046] The signal conditioning circuit 13 is crucial for ensuring the quality of the output signal from the pressure sensor 10. Amplification circuit 141 utilizes the OP07 high-precision operational amplifier, which offers advantages such as low noise, high gain, and low offset voltage. Because the analog signal output from the pressure sensor 10 is typically weak, perhaps only a few to tens of millivolts, the OP07 linearly amplifies this weak signal at a preset amplification factor to meet the requirements of subsequent analog-to-digital conversion.

[0047] The filter circuit 14 adopts a passive filter, which is composed of passive components such as capacitors and inductors. By reasonably designing the parameters of the filter, high-frequency noise and interference in the signal can be effectively filtered out. For example, by selecting appropriate capacitance and inductance values, a low-pass filter with a cutoff frequency of 100Hz is designed, which can block high-frequency noise signals above 100Hz, making the conditioned signal purer and more stable, thereby improving the measurement accuracy of the entire system.

[0048] The OP07 operational amplifier uses its electrical characteristics to amplify signals, and the passive filter uses the impedance characteristics of capacitors and inductors to filter out high-frequency noise, thereby improving signal quality.

[0049] The microcontroller 15 adopts the STM32L4 series, which is a low-power, high-performance 32-bit microcontroller 15. In terms of data acquisition control, it can accurately control the data acquisition frequency by configuring its own rich analog-to-digital conversion (ADC) module. For example, according to different riding scenarios and user needs, the acquisition frequency can be flexibly set between 1 and 10 times per second.

[0050] During the data acquisition process, the microcontroller 15 accurately controls

[0051] The ADC module converts the analog signal output by the pressure sensor 10 into a digital signal. For data processing and calculation, the microcontroller 15 performs complex mathematical operations on the converted digital signal based on the characteristic parameters of the pressure sensor 10, such as sensitivity, zero offset, linearity, etc.

[0052] The STM32L4 series microcontroller 15 utilizes its internal ADC module and powerful computing power, combined with the characteristic parameters of the sensor, to accurately collect and process the pressure signal.

[0053] The data bus 16 plays a key role in information transmission in the entire system. It is a high-speed communication channel between the microcontroller 15 and the display screen 5. It adopts a standard communication protocol, such as SPI (Serial Peripheral Interface) or I2C (Inter-Integrated Circuit Bus) protocol. The data bus 16 can quickly and stably send the tire pressure information processed by the microcontroller 15 to the display screen 5 in real time. Through a strict data transmission protocol and a high data transmission rate, the integrity and timeliness of the information during the transmission process are guaranteed, so that the display screen 5 can update the display content in a timely and accurate manner, providing the user with the latest tire pressure data.

[0054] The efficiency and stability of standard communication protocols such as SPI or I2C are utilized to achieve fast data transmission between the microcontroller 15 and the display screen 5.

[0055] In summary, during cycling, especially when riding at high speeds or under complex road conditions, the stability of tire pressure is crucial. When the tire pressure is too high, the contact area between the tire and the ground is reduced, resulting in a decrease in grip and the vehicle is prone to loss of control. When the tire pressure is too low, the tire deforms excessively, which will generate a lot of heat, increasing the risk of tire blowouts and increasing the resistance to riding. This electronic tire pressure gauge allows users to check the tire pressure at any time before or during riding, and detect abnormal tire pressure in time. Once the tire pressure is found to be out of the normal range (such as the normal tire pressure range is 2.0-2.8bar, when the tire pressure is lower than 2.0ba or higher than 2.8bar), the user can take timely measures, such as adjusting the tire pressure or checking whether the tire has air leaks, etc., thereby effectively avoiding tire blowouts or other safety hazards caused by tire pressure problems and ensuring the personal safety of riders.

[0056] After the user installs the button battery, the electronic tire pressure gauge starts working. The microcontroller 15 first performs initialization operations, including setting its own internal registers, clock source, and peripheral interfaces (such as ADC, SPI, I2C, etc.). At the same time, it initializes various hardware components such as the pressure sensor 10 and the display screen 5. For example, it sends an initialization command to the pressure sensor 10 to obtain the initial state and calibration parameters of the sensor, and initializes the display screen 5, including display mode, brightness, etc.

[0057] During riding, the air pressure in the tire acts on the sensing diaphragm of the pressure sensor 10. The pressure sensor 10 outputs a corresponding analog electrical signal based on the air pressure. The analog signal first enters the signal conditioning circuit 13. In the signal conditioning circuit 13, the OP07 amplifier circuit 141 amplifies the weak sensor signal according to a preset amplification factor. The high-frequency noise and interference are then filtered out through a passive filter to obtain a clean and stable analog signal. The conditioned analog signal is sent to the ADC port of the microcontroller 15. The microcontroller 15 converts the analog signal into a digital value through the ADC according to the set data acquisition frequency (e.g., 5 times per second).

[0058] After receiving the digital value converted by the ADC, the microcontroller 15 calibrates and calculates the digital value according to the characteristic parameters of the pressure sensor 10 (such as sensitivity, zero offset, linearity, etc.). If the sensor has a temperature compensation function, the microcontroller 15 will also obtain temperature data and perform compensation calculation on the pressure value based on the temperature. The calculated tire pressure value is converted to the unit (such as converted to commonly used bar or psi) and stored in the memory of the microcontroller 15.

[0059] The microcontroller 15 transmits the processed tire pressure value to the display screen 5 via a data bus 16 (e.g., SPI or I2C). The display screen 5 driver chip updates the display content based on the received data, displaying the tire pressure value in a clear and intuitive manner on the display screen 5. The user can directly see the tire pressure information on the display screen 5 through the transparent housing 3.

[0060] If the user presses the button 6 on the circuit main board 4, some interactive functions can be realized, such as switching the tire pressure display unit, setting the tire pressure alarm threshold, etc. When the tire pressure value exceeds the alarm threshold set by the user, the display screen 5 can remind the user to pay attention to the abnormal tire pressure by flashing or displaying special symbols.

[0061] The electronic tire pressure gauge continues the above steps, monitoring tire pressure changes in real time, providing users with timely and accurate tire pressure information to ensure riding safety and comfort.

[0062] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tire valve with tire pressure display, comprising a housing body (1), characterized in that: A transparent shell (3) is installed on the outer side of the shell body (1), a battery shell (7) is provided inside the shell body (1), a plurality of button battery bodies (8) are provided inside the battery shell (7), a sealing ring (9) is provided below the battery shell (7), and a pressure sensor (10) is installed at the bottom of the sealing ring (9); A connecting connector (11) is installed at the bottom of the housing body (1), and a tire pressure display device is installed inside the housing body (1) and on the right side of the battery housing (7). The tire pressure display device is connected to the pressure sensor (10) via a wire (12). The tire pressure display device is used to receive a signal from the pressure sensor (10) and display it in real time. The tire pressure display device comprises a circuit main board (4), a button (6) is mounted on the circuit main board (4), and a display screen (5) is provided at the connection of the circuit main board (4).

2. The tire valve with tire pressure display according to claim 1, characterized in that: The tire pressure display device further comprises a signal conditioning circuit (13), a microcontroller (15) and a data bus (16).

3. The tire valve with tire pressure display according to claim 2, characterized in that: The signal conditioning circuit (13) comprises an amplifier circuit (141) and a filter circuit (14). The amplifier circuit (141) adopts OP07, and the filter circuit (14) adopts a passive filter to remove high-frequency noise and interference in the signal.

4. The tire valve with tire pressure display according to claim 3, characterized in that: The microcontroller (15) adopts the STM32L4 series. The microcontroller (15) is used for data acquisition control, configures an analog-to-digital conversion module, sets an acquisition frequency, accurately converts the analog signal of the pressure sensor (10) into a digital signal, and simultaneously performs data processing and calculation, processing pressure data according to characteristic parameters of the pressure sensor (10).

5. The tire valve with tire pressure display according to claim 4, characterized in that: The data bus (16) is used to send the information processed by the microcontroller (15) to the display screen (5) in real time, and the display screen (5) is used to display the pressure value in the tire.

6. The tire valve with tire pressure display according to claim 1, characterized in that: The battery housing (7) is used to isolate a plurality of button battery bodies (8) from high-pressure gas and moisture in the tire.

7. The tire valve with tire pressure display according to claim 1, characterized in that: The transparent shell (3) is made of acrylic board.

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