Tire pressure meter mounted on air tap

Abstract

The utility model provides a tire pressure gauge mounted on an air tap, which relates to the technical field of bicycle tire pressure monitoring and comprises a bottom shell body, a tire pressure monitoring component is arranged in the bottom shell body, and the tire pressure monitoring component is used for detecting tire pressure. The tire pressure monitoring assembly comprises a calculation chip circuit board, a pressure sensor, a microprocessor, a display screen circuit board and a display screen body, the air pressure value of the bicycle tire can be rapidly and accurately measured through the built-in pressure sensor, the advanced calculation chip circuit board and the microprocessor, and the air pressure value is displayed in real time through the display screen body; a rider can accurately master the tire pressure condition at any time, the problem that a traditional handheld barometer is insufficient in measurement accuracy and timeliness is solved, it is ensured that air pressure abnormity can be found in time under different road conditions and riding conditions, and riding safety is guaranteed.

Description

Technical Field

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

[0002] In modern transportation, tires, as a key component in contact with the ground, play a crucial role in driving safety and performance due to their air pressure. Whether it's a car or a bicycle, proper tire pressure directly affects the riding experience and safety.

[0003] With the increasing popularity of cycling and people's growing awareness of cycling safety, the demand for accurate monitoring of bicycle tire pressure is becoming more and more prominent. Compared with cars, bicycles have relatively weaker riding stability. If the tire pressure is insufficient or too high, it is easier to encounter dangerous situations such as difficulty in handling, bumps, or even tire blowouts during riding.

[0004] Traditional bicycle tire pressure checks rely mainly on experience and simple handheld pressure gauges. This method is not only inconvenient to operate, but also makes it difficult to guarantee the accuracy and timeliness of the measurements, failing to meet cyclists' needs for real-time monitoring of tire pressure under different road conditions and riding conditions.

[0005] Therefore, we propose a tire pressure gauge that is mounted on the valve stem. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies. Traditional bicycle tire pressure testing mainly relies on experience and simple handheld pressure gauges. This method is not only inconvenient to operate, but also makes it difficult to guarantee the accuracy and timeliness of the measurement, failing to meet the rider's need for real-time monitoring of tire pressure under different road conditions and riding conditions.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A tire pressure gauge installed on a valve stem includes a base body, inside which a tire pressure monitoring component is provided. The tire pressure monitoring component is used to detect tire pressure. The tire pressure monitoring component includes a computing chip circuit board, a pressure sensor, a microprocessor, a display circuit board, and a display screen body.

[0009] The computing chip circuit board is equipped with a pressure sensor and a microprocessor, the display circuit board is equipped with a display screen body, and the top of the tire pressure monitoring component is also equipped with a second sealing ring, the top of which is provided with a transparent cover.

[0010] As a preferred embodiment of this utility model, the outer wall of the bottom shell body is provided with bottom shell sealing connection threads around the perimeter, and a connecting air nozzle is installed at the bottom of the bottom shell body.

[0011] As a preferred embodiment of this utility model, the connection of the bottom shell body is further provided with an upper shell body, and the inner wall of the upper shell body is provided with upper shell sealing connection threads around its perimeter.

[0012] As a preferred embodiment of this utility model, the upper shell body is connected to the lower shell body via the upper shell sealing connection thread and the lower shell body via the lower shell sealing connection thread, and the connecting valve is connected to the tire valve.

[0013] As a preferred embodiment of this utility model, the display circuit board is further provided with a button, which is used to turn the tire pressure monitoring component on or off.

[0014] As a preferred embodiment of this utility model, a first sealing ring is further provided between the calculation chip circuit board of the tire pressure monitoring component and the bottom shell body, and the first sealing ring is connected and fixed to the bottom shell body by bolts.

[0015] As a preferred embodiment of this utility model, a storage battery is also provided at the bottom of the display circuit board, which is used to power the tire pressure monitoring component.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention utilizes a built-in pressure sensor, an advanced computing chip circuit board, and a microprocessor to quickly and accurately measure the tire pressure of a bicycle, displaying the readings in real time on the display screen. This allows riders to accurately monitor tire pressure at any time, solving the problems of insufficient accuracy and timeliness of traditional handheld tire pressure gauges. It ensures that abnormal tire pressure can be detected promptly under different road conditions and riding conditions, thus guaranteeing riding safety.

[0018] Meanwhile, the connecting valve at the bottom of the base body can be directly connected to the bicycle tire valve, and the tire pressure gauge is securely installed through the bottom shell sealing connection thread and the upper shell body and corresponding sealing connection thread. The operation is simple and quick, and riders can easily complete the installation and removal without the need for other complicated tools, which is convenient for daily use and maintenance. Attached Figure Description

[0019] Figure 1 A schematic diagram of the main structure of a tire pressure gauge installed on a valve stem, provided by this utility model;

[0020] Figure 2 An exploded structural diagram of a tire pressure gauge installed on a valve stem, provided by this utility model;

[0021] Figure 3 A schematic cross-sectional view of the main body of a tire pressure gauge installed on a valve stem, provided by this utility model;

[0022] Figure 4 This utility model provides a system block diagram of a tire pressure gauge installed on a valve stem.

[0023] Legend: 1. Bottom shell body; 2. Bottom shell sealing connection thread; 3. Connecting air nozzle; 4. Upper shell body; 5. Upper shell sealing connection thread; 6. First sealing ring; 7. Calculation chip circuit board; 8. Storage battery; 9. Display screen circuit board; 10. Button; 11. Second sealing ring; 12. Transparent cover; 13. Pressure sensor; 14. Microprocessor; 15. Display screen body. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Example

[0029] like Figure 1-4As shown, this utility model provides a technical solution: the pressure sensor 13 adopts a high-sensitivity piezoresistive sensor, and its internal sensitive element can generate a corresponding resistance value change according to the change of air pressure inside the tire.

[0030] When tire pressure acts on the sensor's diaphragm, the diaphragm deforms, causing a change in the sensor's internal resistance. This change in resistance has a precise correspondence with the tire pressure value.

[0031] The computing chip circuit board 7 integrates an advanced analog-to-digital converter (ADC) circuit, which can quickly and accurately convert the analog electrical signal output by the pressure sensor 13 into a digital signal for processing by the microprocessor 14. The microprocessor 14 runs a specially designed algorithm program that performs complex calculations and data processing on the digital signal received from the computing chip circuit board 7, and converts the digital signal into an actual air pressure value based on a preset air pressure measurement model and calibration parameters.

[0032] Piezoresistive sensors operate based on the piezoresistive effect of semiconductor materials. When subjected to pressure, their internal crystal structure changes, resulting in a change in resistance. This physical characteristic enables them to accurately sense changes in air pressure and convert them into electrical signals. The ADC circuit samples, quantizes, and encodes the analog signals, converting the continuous analog electrical signals into discrete digital signals so that the microprocessor 14 can perform efficient and accurate digital calculations.

[0033] The algorithm program of microprocessor 14 uses pre-stored calibration data and mathematical models to perform linearization, temperature compensation and other operations on digital signals to obtain accurate air pressure values.

[0034] The air pressure inside the tire acts on the pressure sensor 13, which converts the pressure change into a resistance change and outputs an analog electrical signal. This analog signal is transmitted to the computing chip circuit board 7, where it is converted into a digital signal by an ADC and then sent to the microprocessor 14. The microprocessor 14 runs an algorithm to process the digital signal, ultimately obtaining a precise air pressure value, which is then prepared for transmission to the display circuit board 9 for display.

[0035] The bottom shell body 1 is injection molded from high-strength and corrosion-resistant engineering plastic, and the connecting valve 3 at its bottom is designed to fit tightly with the bicycle tire valve.

[0036] The valve 3 is equipped with a one-way valve. When the tire pressure gauge is connected to the tire valve, the one-way valve opens under the action of the pressure difference, allowing the air in the tire to smoothly enter the measuring chamber of the tire pressure gauge. When the tire pressure gauge is removed from the tire valve, the one-way valve automatically closes to prevent air leakage.

[0037] The bottom shell sealing connection thread 2 on the outer wall of the bottom shell is precision machined, with good pitch and tooth profile accuracy, to ensure a tight fit with the upper shell sealing connection thread 5 of the upper shell body 4, forming a reliable sealing connection structure, preventing external dust, moisture and other impurities from entering the tire pressure gauge, while ensuring the stability and reliability of the entire device during bicycle operation.

[0038] The one-way valve connected to valve 3 utilizes the principle of air pressure difference. When the tire pressure gauge is connected to the tire valve, the air pressure inside the tire is higher than the air pressure in the measuring chamber of the tire pressure gauge, which pushes the one-way valve to open and allow gas to flow. When the two are separated, the air pressure in the measuring chamber is higher than the external air pressure, and the one-way valve closes under the action of spring force or its own structure, preventing gas from flowing out.

[0039] The mating principle of the bottom shell sealing connection thread 2 and the upper shell sealing connection thread 5 is based on the mechanical fastening effect of the threads. By tightening the upper shell body 4, the threads are tightly engaged, generating sufficient friction and sealing force to achieve the effect of sealing and fixing.

[0040] Align the tire pressure gauge's connecting valve 3 with the bicycle tire valve, gently rotate and press to ensure a tight connection. The pressure difference will cause the air inside the tire to push open the one-way valve in connecting valve 3 and enter the tire pressure gauge's measuring chamber. After measuring the pressure, rotate the tire pressure gauge counterclockwise to remove it. The one-way valve in connecting valve 3 will automatically close to prevent air leakage.

[0041] The upper shell body 4 is also made of engineering plastic material. The upper shell sealing connection thread 5 on its inner wall is designed to match the bottom shell sealing connection thread 2 of the bottom shell body 1. The thread surface has undergone special treatment process to increase its surface smoothness and wear resistance, further improving the tightness and reliability of the thread connection.

[0042] During the tightening process of the upper housing body 4 and the lower housing body 1, the sealing threads between the two gradually engage, securing them tightly together and effectively protecting the internal tire pressure monitoring components from damage caused by external environmental factors. Furthermore, the design of the upper housing body 4 takes ergonomics into account; its shape facilitates gripping and operation, making installation and removal of the tire pressure gauge more convenient and quick.

[0043] The tightness of a threaded connection depends on factors such as the thread pitch, thread angle, thread helix angle, and the elastic modulus of the material.

[0044] Through precise machining processes, the consistency and accuracy of these parameters of the upper and lower shell threads are ensured, so that the threads can be evenly stressed and tightly engaged during tightening, achieving good sealing and fixing effects.

[0045] The ergonomic design of the upper shell body 4 is based on the physiological structure and operating habits of the human hand. Through a reasonable shape design, it allows users to apply rotational force more comfortably and stably when holding it, thereby improving the convenience and efficiency of operation.

[0046] After connecting the valve stem 3 to the tire valve stem, pick up the upper shell body 4 and align the upper shell sealing connection thread 5 on its inner wall with the bottom shell sealing connection thread 2 on the bottom shell body 1. Then rotate the upper shell body 4 clockwise and gradually tighten it until the upper and lower shells are tightly joined to form a complete sealed cavity to protect the internal tire pressure monitoring components.

[0047] When it is necessary to remove the tire pressure gauge, rotate the upper housing body 4 counterclockwise to loosen the threaded connection, and then remove the upper housing body 4 for subsequent operations.

[0048] The button 10 on the display circuit board 9 adopts a micro switch design, and its internal contact structure can quickly realize the circuit connection and disconnection when pressed.

[0049] When the rider presses button 10, button 10 triggers an interrupt signal to microprocessor 14. After receiving the signal, microprocessor 14 performs corresponding operations according to the preset program logic, such as turning the power of the tire pressure monitoring component on or off, or switching the display interface (such as switching the air pressure unit, querying historical data, etc.).

[0050] The surface of button 10 is frosted, which increases the friction between the finger and button 10 and prevents accidental operation due to sweaty hands or vibration during riding. At the same time, the position and size of button 10 are also carefully designed so that riders can easily reach and operate it while riding.

[0051] The micro switch utilizes the principle of converting mechanical force into electrical signal. When button 10 is pressed, the external mechanical force acts on the elastic spring inside the switch, causing the spring to deform and thus closing the originally separated contacts, thereby making the circuit conductive. When button 10 is released, the spring returns to its original shape under its own elasticity, the contacts separate, and the circuit is broken.

[0052] This simple and reliable mechanical structure enables the input of control signals to the microprocessor 14, thereby controlling various functions of the tire pressure monitoring component.

[0053] The first sealing ring 6 is made of oil-resistant and aging-resistant rubber material. Its cross-sectional shape is designed to be circular or rectangular. It is installed in the sealing groove between the computing chip circuit board 7 and the bottom shell body 1. The sealing ring is compressed by the tightening force of the bolts, thereby filling the tiny gap between the two and forming a reliable sealing barrier.

[0054] The second sealing ring 11 is also made of high-quality rubber material. It is installed between the top of the tire pressure monitoring component and the transparent cover 12. When the transparent cover 12 is installed in place, the second sealing ring 11 is compressed evenly to prevent external dust, moisture and other impurities from entering the interior through the gap between the transparent cover 12 and the tire pressure monitoring component.

[0055] The design and materials of these two sealing rings take into full consideration the use of bicycles in various harsh environments, such as riding in the rain and driving on muddy roads, to ensure that the electronic components inside the tire pressure gauge are always in a dry and clean environment, thus guaranteeing the stability and reliability of its performance.

[0056] The sealing principle of rubber sealing rings is based on the elasticity and compression deformation characteristics of their materials. When subjected to external pressure (such as bolt tightening force or installation pressure of transparent cover 12), the sealing ring will undergo elastic deformation to fill the gap of the sealing part. By utilizing the intermolecular forces and surface tension of the rubber material, it prevents the passage of impurities such as gas, liquid and solid particles, thereby achieving a sealing effect.

[0057] Meanwhile, the oil-resistant and aging-resistant properties of the rubber material ensure that the sealing ring can maintain good sealing performance and physicochemical properties even under harsh conditions such as long-term contact with lubricating oil, ultraviolet rays, and temperature changes.

[0058] When assembling the tire pressure gauge, the first sealing ring 6 is first placed in the sealing groove of the bottom shell body 1, and then the calculation chip circuit board 7 is installed on the bottom shell body 1. The bolts are tightened evenly to compress the first sealing ring 6, forming a seal between the calculation chip circuit board 7 and the bottom shell body 1.

[0059] When installing the transparent cover 12, place the second sealing ring 11 at the corresponding position on top of the tire pressure monitoring assembly, and then install the transparent cover 12 into place, compressing the second sealing ring 11 to achieve a seal between the transparent cover 12 and the tire pressure monitoring assembly. Throughout use, the two sealing rings continuously perform their sealing function, protecting the internal components.

[0060] The battery 8 at the bottom of the display circuit board 9 is a lithium battery, which has advantages such as high energy density, low self-discharge rate and long cycle life.

[0061] The lithium battery stores electrical energy through a chemical reaction. When the tire pressure monitoring component is working, the positive and negative terminals of the battery are connected to other electronic components through a circuit to form a current loop, providing a stable DC power supply to components such as the pressure sensor 13, microprocessor 14, and display screen.

[0062] The workflow is as follows:

[0063] First, the rider connects the tire pressure gauge's valve 3 to the bicycle tire valve, allowing air from the tire to enter the tire pressure gauge's measuring chamber.

[0064] Then, press button 10 on display circuit board 9 to turn on the tire pressure monitoring component. At this time, battery 8 supplies power to each component. Pressure sensor 13 senses the air pressure and transmits the signal to computing chip circuit board 7. After ADC conversion and microprocessor 14 processing, the obtained air pressure value is transmitted to display circuit board 9 and displayed in real time through display body 15.

[0065] During the ride, the rider can check the tire pressure at any time. After the ride, press button 10 again to turn off the tire pressure monitoring system, saving battery power.

[0066] Throughout the entire process of use, the first sealing ring 6 and the second sealing ring 11 prevent external impurities from entering the tire pressure gauge and protect the electronic components.

[0067] 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 tire pressure gauge mounted on a valve stem, comprising a base body (1), characterized in that: The bottom shell body (1) is equipped with a tire pressure monitoring component. The tire pressure monitoring is used to detect tire pressure. The tire pressure monitoring component includes a computing chip circuit board (7), a pressure sensor (13), a microprocessor (14), a display circuit board (9), and a display body (15). The computing chip circuit board (7) is equipped with a pressure sensor (13) and a microprocessor (14), the display circuit board (9) is equipped with a display body (15), and the top of the tire pressure monitoring component is also equipped with a second sealing ring (11), the top of the second sealing ring (11) is provided with a transparent cover (12).

2. A tire pressure gauge installed on a valve stem according to claim 1, characterized in that: The bottom shell body (1) has a bottom shell sealing connection thread (2) around its outer wall, and a connecting air nozzle (3) is installed at the bottom of the bottom shell body (1).

3. A tire pressure gauge installed on a valve stem according to claim 2, characterized in that: The bottom shell body (1) is also provided with an upper shell body (4) at the connection point, and the upper shell body (4) is provided with upper shell sealing connection threads (5) around the inner wall.

4. A tire pressure gauge installed on a valve stem according to claim 3, characterized in that: The upper shell body (4) is connected to the lower shell body (1) via the upper shell sealing connection thread (5) and the lower shell body (1) via the lower shell sealing connection thread (2). The connecting air valve (3) is connected to the tire air valve.

5. A tire pressure gauge installed on a valve stem according to claim 4, characterized in that: The display circuit board (9) is also provided with a button (10), which is used to turn the tire pressure monitoring component on or off.

6. A tire pressure gauge installed on a valve stem according to claim 5, characterized in that: A first sealing ring (6) is provided between the calculation chip circuit board (7) of the tire pressure monitoring component and the bottom shell body (1). The first sealing ring (6) is connected and fixed to the bottom shell body (1) by bolts.

7. A tire pressure gauge installed on a valve stem according to claim 6, characterized in that: The bottom of the display circuit board (9) is also provided with a storage battery (8), which is used to power the tire pressure monitoring component.

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