Buzzing tire pressure alarm installed on air tap

Abstract

The utility model provides a buzzing tire pressure alarm installed on an air tap, which relates to the technical field of bicycle tire pressure alarm, and comprises an upper shell assembly, an air tap connecting assembly is arranged at the joint of the upper shell assembly, and the air tap connecting assembly is used for being fixedly connected with the tire air tap. The air nozzle connecting assembly comprises a connecting nozzle, a third connecting thread and an air inlet nozzle, the upper shell assembly is used for being connected, fixed and detached with the air nozzle connecting assembly, the upper shell assembly comprises an upper shell body, anti-skid lines and a first connecting thread, and the pressure sensor can accurately detect the input air pressure value. The air pressure of the tire can be monitored in real time in cooperation with data acquisition, conversion and judgment logic of the microprocessor, an alarm mechanism can be quickly triggered when the air pressure is lower than a safety threshold value, a rider can know the air pressure condition of the tire in time, and potential safety hazards such as increase of riding resistance, excessive abrasion of the tire and tire burst caused by insufficient air pressure are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of bicycle tire pressure alarm technology, and in particular to a buzzer tire pressure alarm installed on the valve stem. Background Technology

[0002] In modern cycling, proper tire pressure plays a crucial role in both riding experience and safety. With the continuous development of bicycle technology and people's increasing demands for riding quality, the need for accurate tire pressure monitoring and timely alerts is becoming increasingly prominent.

[0003] In traditional bicycle riding, riders often rely on experience or periodic manual checks to determine whether the tire pressure is sufficient.

[0004] However, this method has many drawbacks. On the one hand, experience-based judgment lacks accuracy. Different riding conditions, loads, and tire types all affect the appropriate tire pressure. It is difficult to ensure that the tires are always in the optimal pressure state based solely on subjective feelings. On the other hand, manual checks are time-consuming and laborious, and it is impossible to detect changes in tire pressure in real time during riding. If a sudden drop in tire pressure occurs during riding, such as a slow leak caused by a sharp object puncturing the tire, the rider may not be able to detect it in time. This will not only increase the resistance of riding and affect the comfort and efficiency of riding, but may also cause safety accidents due to excessive tire wear or even tire blowout, endangering the rider's personal safety.

[0005] Therefore, we propose a buzzer-type tire pressure alarm that is installed on the valve stem. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies. In modern bicycle riding, tire pressure is crucial. Traditional methods of relying on experience or manually checking tire pressure have obvious drawbacks, being inaccurate and unable to be monitored in real time, which can easily lead to safety issues.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A buzzer-type tire pressure alarm mounted on a tire valve includes an upper housing assembly.

[0009] An air nozzle connection assembly is provided at the connection point of the upper housing assembly.

[0010] The valve stem connection assembly is used to connect and fix with the tire valve stem. The valve stem connection assembly includes a connecting nozzle, a third connecting thread, and an air inlet nozzle.

[0011] The upper housing assembly is used for connecting, fixing, and disassembling with the air nozzle connection assembly. The upper housing assembly includes an upper housing body, anti-slip texture, and a first connecting thread.

[0012] The air nozzle connection assembly has a main board inside. A pressure sensor is installed at the bottom of the main board. A button battery is installed above the main board. A mounting base is installed on the top of the button battery. A buzzer body is installed on the top of the mounting base. Two perforated plates are installed above the buzzer body. A waterproof and sound-permeable membrane is installed between the two perforated plates. A microprocessor is also installed on the main board.

[0013] As a preferred embodiment of this utility model, the air nozzle connection assembly further includes a connecting plate, a mounting housing, and a second connecting thread. The mounting housing is mounted on the top of the connecting plate, and the second connecting thread is provided on the outer surface of the mounting housing near the bottom.

[0014] As a preferred embodiment of this utility model, a connecting nozzle is installed at the bottom of the connecting plate, a third connecting thread is provided on the inner wall of the connecting nozzle near the bottom, and an air inlet is provided inside the connecting nozzle.

[0015] As a preferred embodiment of this utility model, the outer side wall of the upper outer shell body is provided with anti-slip texture near the top, and the interior of the upper outer shell body is provided with a first connecting thread near the bottom.

[0016] As a preferred embodiment of this utility model, the upper outer shell body of the upper outer shell assembly is threadedly connected to the second connecting thread of the air nozzle connection assembly mounting housing via a first connecting thread, and the air nozzle connection assembly is interconnected with the tire air nozzle via a third connecting thread of the connecting nozzle, and the air inlet is used for gas input.

[0017] As a preferred embodiment of this utility model, the pressure sensor is electrically connected to the motherboard, and the pressure sensor is installed on the air inlet to detect the input air pressure value.

[0018] As a preferred embodiment of this utility model, the microprocessor is used to collect the values ​​of the pressure sensor, convert the collected signals, and then make judgments through built-in judgment logic to trigger the corresponding alarm mechanism.

[0019] As a preferred embodiment of this utility model, a dividing and fixing plate is further provided between the pressure sensor and the connecting plate, and the dividing and fixing plate is fixed to the pressure sensor by sealing bolts.

[0020] In a preferred embodiment of this invention, both the button battery and the buzzer body are electrically connected to the motherboard.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] In this invention, firstly, in terms of connection method, the device is conveniently installed and disassembled through the threaded connection between the valve connecting assembly, the tire valve, and the upper housing assembly, making it easy for riders to replace the battery or perform maintenance when needed, thus improving the convenience and flexibility of use.

[0023] Secondly, the pressure sensor can accurately detect the input air pressure value. Combined with the microprocessor's data acquisition, conversion, and judgment logic, it can monitor tire pressure in real time and quickly trigger an alarm mechanism when the air pressure is lower than the safety threshold. This allows cyclists to understand the tire pressure status in a timely manner, effectively avoiding safety hazards such as increased riding resistance, excessive tire wear, and tire blowouts caused by insufficient air pressure, thus ensuring the safety and comfort of riding.

[0024] Finally, the waterproof and sound-permeable membrane and perforated plate above the buzzer not only effectively waterproof and protect the internal components from rainwater corrosion, extending their service life, but also ensure that the alarm sound emitted by the buzzer is clearly audible, so that even in complex riding environments, it can promptly remind riders to pay attention to tire pressure issues, greatly improving the practicality and reliability of the product. Attached Figure Description

[0025] Figure 1 A schematic diagram of the main structure of a buzzer tire pressure alarm installed on a tire valve, provided by this utility model;

[0026] Figure 2 A bottom view of the main body structure of a buzzer tire pressure alarm device installed on an air valve, provided by this utility model;

[0027] Figure 3 A schematic diagram showing the unfolded upper housing and mounting housing of a buzzer tire pressure alarm installed on an air valve, provided by this utility model;

[0028] Figure 4 A schematic diagram of the first connecting thread installation position of a buzzer tire pressure alarm installed on an air valve, provided by this utility model;

[0029] Figure 5 An exploded schematic diagram of the main body of a buzzer tire pressure alarm installed on a tire valve, as provided by this utility model;

[0030] Figure 6 A schematic cross-sectional view of the main body of a buzzer tire pressure alarm installed on a valve stem, provided by this utility model;

[0031] Figure 7 This utility model provides a system block diagram of a buzzer tire pressure alarm installed on a tire valve.

[0032] Legend:

[0033] 11. Upper outer shell body; 12. Anti-slip texture; 13. First connecting thread;

[0034] 21. Connecting plate; 22. Mounting housing; 23. Second connecting thread; 24. Connecting nozzle; 25. Third connecting thread; 26. Air inlet nozzle;

[0035] 3. Dividing and fixing plate;

[0036] 5. Sealing bolts;

[0037] 6. Pressure sensor;

[0038] 7. Motherboard; 71. Microprocessor;

[0039] 8. Button battery;

[0040] 9. Mounting bracket;

[0041] 10. Buzzer body;

[0042] 14. Perforated plate;

[0043] 15. Waterproof and sound-permeable membrane. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0045] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model 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 this utility model more thorough and complete.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] Example

[0049] like Figure 1-7 As shown, this utility model provides a technical solution: in terms of connection method, the tire pressure buzzer alarm of this utility model demonstrates convenience and stability through the carefully designed threaded connection between the valve connecting assembly and the tire valve and the upper housing assembly.

[0050] The connecting nozzle 24 in the valve assembly has a third connecting thread 25 precisely set on its inner wall near the bottom. It adopts a standard and fine thread specification, which is highly compatible with the thread structure of the tire valve. The thread pitch, tooth angle and other parameters have been strictly designed and tested to ensure that there will be no stripping or loosening when subjected to large pressure and torque.

[0051] This threaded connection utilizes the tight interlocking characteristics between the threads. In actual riding, no matter how complex and harsh the road conditions are, such as uneven rural roads, rugged mountain trails, or the frequent turning and braking at high speeds, the connection can always remain stable without any loosening or displacement.

[0052] This not only ensures the airtightness of gas transmission, allowing the gas inside the tire to enter the area where the pressure sensor 6 is located stably and accurately, providing a reliable gas sample for subsequent air pressure measurement, but also lays a solid foundation for the stable operation of the entire device, avoiding measurement errors or device failures caused by loose connections.

[0053] The first connecting thread 13 inside the upper housing body 11 of the upper housing assembly near the bottom engages with the second connecting thread 23 on the outer surface of the air valve connection assembly mounting housing 22 near the bottom. When maintenance operations are required, such as replacing the button battery 8, the rider only needs to use simple everyday tools, such as a wrench or screwdriver (if there is an auxiliary fixing structure), to rotate the upper housing assembly according to the normal direction of the thread, and the disassembly and installation process can be easily completed.

[0054] This design fully considers the actual usage scenarios of cyclists. It does not require cyclists to have complex professional skills or rely on special auxiliary equipment, which greatly reduces the threshold for use and maintenance costs. This makes the device highly convenient and flexible in actual use scenarios, and can meet the maintenance needs of cyclists at any time, ensuring that the tire pressure alarm is always in good working condition and providing continuous and reliable protection for cycling safety.

[0055] As the core component of tire pressure monitoring, the pressure sensor 6 is installed on the air intake 26. Based on the advanced and precise piezoresistive effect principle, it achieves accurate measurement of air pressure. This process involves microscopic physical changes and precise electronic signal conversion.

[0056] When the gas inside the tire enters the sensing area of ​​the pressure sensor 6 through the air inlet 26, the gas molecules exert a continuous and stable pressure on the sensitive element inside the sensor.

[0057] This pressure will cause changes in the physical properties of the sensitive element, specifically a corresponding change in the resistance value.

[0058] The change in this resistance value has a precise linear relationship with the applied air pressure value. This is the result of precise design and calibration by researchers in the laboratory using high-precision calibration equipment and complex algorithms. Through this linear relationship, the pressure sensor 6 can accurately convert air pressure information into an electrical signal and transmit it quickly and stably to the main board 7. Its transmission line uses shielded wires, effectively reducing the impact of external electromagnetic interference on the signal and ensuring the accuracy and stability of the signal.

[0059] The pressure sensor 6 uses the MPS20N0040D miniature pressure sensor 6, which is manufactured using advanced microelectromechanical systems (MEMS) technology and has high precision, high sensitivity and good stability.

[0060] This sensor can accurately convert the pressure inside the tire into a linearly varying electrical signal output. Its measurement range is typically 0-40 psi (pounds per square inch), meeting the normal air pressure range requirements of bicycle tires, and its accuracy can reach ±1 psi, providing reliable pressure data for the system.

[0061] It features a compact package that makes it easy to install near the valve of a bicycle tire. Its pin definitions are clear, including a power supply pin (VDD), a ground pin (GND), and a signal output pin (OUT), facilitating connection to other circuit components.

[0062] The microprocessor 71 on the motherboard 7 is an important component of the entire system. It is equipped with a high-precision analog-to-digital converter module. This module uses advanced integrated circuit technology and can convert the received analog electrical signal from the pressure sensor 6 into a digital signal with extremely high speed and accuracy, so as to perform subsequent complex and efficient data processing. The microprocessor 71 is pre-programmed with a set of judgment logic programs that have been verified by a large amount of experimental data and optimized for actual riding scenarios.

[0063] The microprocessor 71 (MCU) uses the STM8S103F3P6 microcontroller, which is based on the STM8 core and has abundant on-chip resources and low power consumption. It integrates a high-speed internal clock of 16MHz, which can quickly process the data transmitted from the pressure sensor 6 and ensure the timely response of the system.

[0064] This microcontroller has multiple general purpose input / output (GPIO) pins. Among them, PA1 can be used as an analog input pin to accurately receive the analog signal from the pressure sensor 6, and pins such as PB0 can be used as digital output pins to flexibly control external devices such as the buzzer body 10. At the same time, it also has a certain storage capacity and computing power, and can store preset safe air pressure values ​​and perform data comparison and logical judgment operations to realize the intelligent control function of the system.

[0065] In the circuit connection between pressure sensor 6 and microprocessor, connect the power supply pin (VDD) of pressure sensor 6 to the power supply pin (VDD) of MCU through a short wire, ensuring a tight connection without any looseness, so as to ensure that pressure sensor 6 can obtain a stable power supply.

[0066] Connect the ground pin (GND) of pressure sensor 6 to the ground pin (GND) of MCU using a wire, so that the sensor and MCU share a common ground, providing a stable reference potential for signal transmission. Similarly, the reliability of the grounding connection must be ensured. Multi-point grounding can be used to reduce grounding resistance and grounding noise.

[0067] Connect the signal output pin (OUT) of pressure sensor 6 to the analog input pin PA1 of the MCU via a wire. During the connection process, pay attention to the shielding of the wire to reduce the influence of external electromagnetic interference on the signal. At the same time, connect a 10kΩ pull-up resistor between the signal output pin (OUT) and the power supply pin (VDD). Connect one end of the resistor to the OUT pin and the other end to the VDD pin. You can use through-hole resistors or surface mount resistors for soldering. Ensure that the resistance value is accurate and the connection is firm.

[0068] During the ride, the microprocessor 71 continuously collects digital signals from the pressure sensor 6 at an extremely high frequency (e.g., hundreds of times per second) and compares them with the preset safety threshold in real time. Once the air pressure value is detected to be lower than the safety threshold, the microprocessor 71 will immediately activate the preset alarm program. Its internal clock frequency and instruction execution speed ensure that signal processing and alarm triggering are completed in a very short time. It will send a trigger signal to the buzzer body 10, causing the buzzer body 10 to quickly emit an alarm sound.

[0069] The buzzer body 10 uses an SFM-27 small electromagnetic active buzzer with an operating voltage range of 3-5V, which is very suitable for systems powered by a 3.7V lithium button battery 8. It has an internal oscillation circuit, and only requires the application of a suitable DC voltage to generate a clear, loud and relatively stable sound signal, ensuring that it can effectively remind cyclists even in noisy outdoor environments.

[0070] The buzzer body 10 has two pins, with the longer pin being the positive terminal and the shorter pin being the negative terminal. This simple pin structure facilitates connection to circuits. When connecting, care should be taken to connect it to the digital output pin of the MCU through a 220Ω current-limiting resistor to prevent excessive current from damaging the buzzer body 10 and the MCU pins.

[0071] For the circuit connection with the microprocessor 71, take a 220Ω current-limiting resistor, connect one end of it to the positive terminal of the buzzer body 10 through a wire, and connect the other end to the digital output pin PB0 of the MCU. When connecting, pay attention to whether the power of the resistor meets the requirements. Generally, a 1 / 4W or 1 / 8W resistor can be selected to ensure that it will not be damaged due to overheating during long-term operation.

[0072] Connect the negative terminal of the buzzer body 10 to the power ground (GND) via a wire to form a complete current loop, ensuring that the buzzer body 10 can sound normally under the control of the MCU. When connecting the buzzer body 10, choose a wire of appropriate thickness, generally 0.3mm. 2 -0.5mm 2 Use single-core wires to ensure the stability and reliability of current transmission. At the same time, pay attention to the installation position of the buzzer body 10 to avoid the pins becoming loose or damaged due to vibration or collision.

[0073] Pressure sensor 6, installed on the valve stem of the bicycle tire, can accurately sense the tire pressure. When the internal tire pressure changes, pressure sensor 6 converts the pressure into a corresponding electrical signal and outputs it to the PA1 analog input pin of the MCU via the OUT pin. The MCU is pre-programmed with a safe tire pressure range, such as 20-30 psi (the specific value can be adjusted according to the actual requirements of the bicycle tire). The MCU periodically samples and converts the analog signal on the PA1 pin, converting it into a corresponding digital pressure value and comparing it with the preset safe pressure range.

[0074] When the MCU determines that the air pressure value corresponding to the received pressure sensor 6 signal is lower than the lower limit of the safe range (e.g., 20psi), the MCU will immediately set the digital output pin PB0 connected to the buzzer body 10 to a high level. At this time, the current flows from the positive terminal of the power supply (VCC) through the 220Ω current-limiting resistor into the positive terminal of the buzzer body 10, and then flows back from the negative terminal of the buzzer body 10 to the power supply ground (GND), so that the buzzer body 10 is powered on and emits a continuous alarm sound to remind the rider that the tire pressure is too low and needs to be inflated.

[0075] While issuing the alarm, the MCU continues to monitor the signal from pressure sensor 6. Once the air pressure is detected to return to a safe range, the MCU will set the PB0 pin to a low level and stop the alarm from the buzzer body 10. In this way, the system can monitor the air pressure of bicycle tires in real time and accurately, and issue an alarm in time when the air pressure is abnormal, providing riders with reliable tire pressure monitoring and alarm services to ensure the safety and comfort of riding.

[0076] This detailed circuit design features a simple structure, low cost, and ease of installation and maintenance, making it ideal for bicycle applications and providing cyclists with a practical tire pressure monitoring solution.

[0077] In principle, when tire pressure is insufficient, the physical structure of the tire changes significantly. According to Hooke's Law and the elasticity model of tires, reduced tire pressure leads to an increase in the contact area between the tire and the ground. Since friction is proportional to the contact area, this results in a significant increase in riding resistance. Riders need to expend more energy to maintain the same riding speed, thus reducing riding efficiency. Riding with insufficient tire pressure for extended periods puts greater pressure on the tire sidewalls and intensifies friction with the ground, accelerating tire wear and shortening its lifespan. More seriously, low tire pressure causes excessive stress on the tire's internal structure, significantly increasing the risk of a blowout. A blowout can easily cause the rider to lose balance, endangering their safety. This tire pressure alarm, through precise pressure detection and a timely alarm mechanism, notifies the rider immediately of any abnormal tire pressure, allowing them to take measures such as inflating the tire. This effectively avoids the problems caused by insufficient tire pressure, strongly ensuring riding safety and comfort, and providing reliable safety guarantees for cyclists.

[0078] The button battery 8 serves as the power supply unit for the entire device. It can provide continuous and stable power output to the tire pressure buzzer alarm in a limited space. Its stable power supply ensures that key components such as the pressure sensor 6, microprocessor 71, and buzzer body 10 can work continuously and normally, and will not affect the accuracy and reliability of monitoring and alarm due to power fluctuations or interruptions.

[0079] Throughout the operation of the device, the button battery 8 consistently provides stable power to all components, enabling the pressure sensor 6 to accurately measure air pressure, the microprocessor 71 to quickly and accurately process data and determine air pressure status, and the buzzer body 10 to promptly issue an alarm when needed, thus ensuring the stable operation of the entire system.

[0080] Meanwhile, the waterproof and sound-permeable membrane 15 and the perforated plate 14 structure set on the top of the buzzer body 10 improve the product's performance in many ways, providing a strong guarantee for its reliable operation in complex and ever-changing riding environments. This is a perfect combination of materials science and acoustic principles.

[0081] The waterproof and sound-permeable membrane 15 is made of a special polymer material. Its microstructure has a large number of carefully designed micropores. The size of these pores has been precisely calculated and optimized. It takes advantage of the size difference between water molecules and air molecules and the wave characteristics of sound propagation. It can both allow sound signals to pass through smoothly and effectively block the intrusion of water molecules.

[0082] When encountering rainy weather or when vehicles pass through flooded sections of road, water molecules, due to their large molecular size, cannot pass through these tiny pores and are thus effectively blocked outside the buzzer body 10. This avoids problems such as short circuits and component corrosion caused by moisture contact, greatly extends the service life of internal components, and ensures that the buzzer body 10 can work normally under various harsh weather conditions.

[0083] The porous plate 14 further optimizes the sound propagation effect. Its porous structure can scatter and enhance the sound emitted by the buzzer body 10. This is based on the principles of diffraction and interference in acoustics. When the buzzer body 10 emits an alarm sound, the sound waves will undergo reflection, refraction, and interference in the pores of the porous plate 14, allowing the sound to propagate more evenly to the surroundings and enhancing the loudness and clarity of the sound to a certain extent. Thus, even in complex riding environments, such as noisy streets with various car engine sounds, horns, and pedestrian noises, or in the suburbs with strong winds and severe interference, the alarm sound can still be clearly heard, promptly attracting the rider's attention and ensuring that the rider will not miss the abnormal tire pressure warning information due to external environmental interference. This greatly improves the practicality and reliability of the product, enabling it to work stably and reliably under various harsh riding conditions and safeguarding the rider's safety.

[0084] The entire working process of the tire pressure monitoring system is as follows:

[0085] First, after the device is installed, the air in the tire enters the area where the pressure sensor 6 is located through the air inlet 26 of the air valve connection assembly. The pressure sensor 6 converts the air pressure into an electrical signal based on the piezoresistive effect, and transmits it to the microprocessor 71 on the motherboard 7 with extremely low signal attenuation through a carefully designed shielded transmission line.

[0086] The analog-to-digital converter module of the microprocessor 71 converts the received analog electrical signal into a digital signal and continuously compares it with the preset safe air pressure threshold at an extremely high frequency. During riding, if the air pressure value remains within the safe threshold range, the system maintains normal monitoring and does not trigger the alarm mechanism. The microprocessor 71 is in a low-power standby mode and only wakes up periodically to collect and compare data in order to save power.

[0087] Once the air pressure falls below the safety threshold due to various reasons (such as air leakage), the microprocessor 71 immediately switches from standby mode to working mode, starts the alarm program, and sends a trigger signal to the buzzer body 10. After receiving the signal, the buzzer body 10 starts to work and emits an alarm sound. At the same time, due to the waterproof and sound-permeable membrane 15 and the porous plate 14 structure on the top of the buzzer body 10, the alarm sound can be clearly propagated in the surrounding environment and can be heard by the rider in time even in harsh riding conditions.

[0088] When riders hear the alarm, they can promptly check and inflate their tires. If maintenance is required, such as replacing the button battery, riders can easily disassemble the upper housing assembly using simple tools and the threaded connection between the valve connector and the upper housing assembly. After maintenance, the assembly can be reinstalled to ensure the device continues to function normally. This achieves real-time and accurate monitoring and timely alarm of bicycle tire pressure, effectively ensuring riding safety and comfort.

[0089] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A buzzer-type tire pressure alarm installed on a tire valve, characterized in that: Including the upper housing assembly, An air nozzle connection assembly is provided at the connection point of the upper housing assembly. The valve stem connection assembly is used to connect and fix with the tire valve stem. The valve stem connection assembly includes a connecting nozzle (24), a third connecting thread (25), and an air inlet nozzle (26). The upper housing assembly is used for connecting, fixing, and disassembling with the air nozzle connection assembly. The upper housing assembly includes an upper housing body (11), anti-slip texture (12), and a first connecting thread (13). The air nozzle connection assembly has a main board (7) inside. A pressure sensor (6) is installed at the bottom of the main board (7). A button battery (8) is installed above the main board (7). A mounting base (9) is installed on the top of the button battery (8). A buzzer body (10) is installed on the top of the mounting base (9). Two perforated plates (14) are installed above the buzzer body (10). A waterproof and sound-permeable membrane (15) is provided between the two perforated plates (14). A microprocessor (71) is also installed on the main board (7).

2. A buzzer-type tire pressure alarm installed on a tire valve according to claim 1, characterized in that: The nozzle connection assembly further includes a connecting plate (21), a mounting housing (22), and a second connecting thread (23). The mounting housing (22) is mounted on the top of the connecting plate (21), and the second connecting thread (23) is provided on the outer surface of the mounting housing (22) near the bottom.

3. A buzzer-type tire pressure alarm installed on a tire valve according to claim 2, characterized in that: The bottom of the connecting plate (21) is equipped with a connecting nozzle (24), and a third connecting thread (25) is provided on the inner wall of the connecting nozzle (24) near the bottom. An air inlet (26) is provided inside the connecting nozzle (24).

4. A buzzer-type tire pressure alarm installed on a tire valve according to claim 3, characterized in that: The outer wall of the upper outer shell body (11) is provided with anti-slip texture (12) near the top, and the interior of the upper outer shell body (11) is provided with a first connecting thread (13) near the bottom.

5. A buzzer-type tire pressure alarm installed on a tire valve according to claim 4, characterized in that: The upper outer shell body (11) of the upper outer shell assembly is threadedly connected to the second connecting thread (23) of the air nozzle connection assembly mounting housing (22) via the first connecting thread (13). The air nozzle connection assembly is connected to the tire valve via the third connecting thread (25) of the connecting nozzle (24). The air inlet (26) is used for gas input.

6. A buzzer-type tire pressure alarm installed on a tire valve according to claim 5, characterized in that: The pressure sensor (6) is electrically connected to the motherboard (7). The pressure sensor (6) is installed on the air inlet (26) and is used to detect the input air pressure value.

7. A buzzer-type tire pressure alarm installed on a tire valve according to claim 6, characterized in that: The microprocessor (71) is used to collect the value of the pressure sensor (6), convert the collected signal, and then judge it through the built-in judgment logic and trigger the corresponding alarm mechanism.

8. A buzzer-type tire pressure alarm installed on a tire valve according to claim 7, characterized in that: A dividing fixing plate (3) is also provided between the pressure sensor (6) and the connecting plate (21), and the dividing fixing plate (3) is fixed to the pressure sensor (6) by sealing bolts (5).

9. A buzzer-type tire pressure alarm installed on a tire valve according to claim 8, characterized in that: The button battery (8) and the buzzer body (10) are both electrically connected to the motherboard (7).

Images