Tire pressure cap for pressing flashing light

Abstract

The invention provides a tire pressure cap capable of pressing a flashing light, and relates to the technical field of tire pressure caps, the tire pressure cap comprises an aluminum alloy upper shell, an aluminum alloy lower shell in threaded connection with the joint of the aluminum alloy upper shell, an air tap connecting piece used for being fixed with a tire air tap, and an ejector pin which is of a hollow structure, is arranged in the aluminum alloy lower shell and is in contact with a valve core, the MCU control module calculates the tire pressure value according to the data of the pressure sensor, feeds back the tire pressure state through the color change of the red-green double-color LED indicator lamp, and turns on the red light when the tire pressure value is lower than the preset threshold value and turns on the green light when the tire pressure value is higher than or equal to the preset threshold value, so that the visual color display mode enables a user not to read complex values, and the user experience is improved. Whether the tire pressure is normal or not can be judged at a glance, the information acquisition efficiency is greatly improved, and the use threshold of a user is lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of tire pressure caps, and in particular to a tire pressure cap with a pressing and flashing light. Background Art

[0002] With the wide application of non-motor vehicles (such as bicycles, electric vehicles, etc.) in people's daily travel, the maintenance and tire pressure monitoring of non-motor vehicle tires have received increasing attention. Tire pressure, as a key factor affecting riding safety, comfort, and tire service life, its accurate monitoring and good airtightness guarantee are particularly important.

[0003] In existing market products, there is a common tire pressure cap, whose original design purpose is to facilitate users to generally understand the tire pressure situation. This kind of tire pressure cap is usually installed and used by screwing it onto the air nozzle cap. It is internally provided with a thimble structure. When installing and operating, the built-in thimble is used to lift the valve core, so that the tire deflates, and then a certain degree of judgment on the tire pressure is realized.

[0004] However, such traditional tire pressure caps expose problems in actual use. Their thimbles often remain in the lifted state for a long time after lifting the valve core, which causes the valve core to not be able to return to the closed position normally, and thus loses its original airtight function. And because their tire pressure detection method is relatively single, it requires manual and deliberate observation and cannot play a warning and reminder function.

[0005] Therefore, we propose a tire pressure cap with a pressing and flashing light. Summary of the Invention

[0006] The purpose of the present invention is to solve the disadvantages existing in the prior art. However, such traditional tire pressure caps expose problems in actual use. Their thimbles often remain in the lifted state for a long time after lifting the valve core, which causes the valve core to not be able to return to the closed position normally, and thus loses its original airtight function. And because their tire pressure detection method is relatively single, it requires manual and deliberate observation and cannot play a warning and reminder function.

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

[0008] A pressing type tire pressure detection cap, comprising:

[0009] An aluminum alloy upper shell, the connection part of the aluminum alloy upper shell is threadedly connected with an aluminum alloy lower shell;

[0010] An air nozzle connector for fixing with the tire air nozzle;

[0011] A thimble, which is a hollow structure, is arranged inside the aluminum alloy lower shell and contacts the valve core;

[0012] A return spring, sleeved outside the thimble, for resetting the thimble;

[0013] A pressure sensor, arranged inside the aluminum alloy upper shell and sealed by a sensor sealing ring;

[0014] An MCU control module, electrically connected to the pressure sensor;

[0015] An LED indicator light, including a red - green dual - color LED, connected to the MCU control module;

[0016] A button battery, supplying power to the pressure sensor, MCU control module and LED indicator light.

[0017] As a preferred solution of the present invention, when pressing the aluminum alloy upper shell, the return spring is compressed, the thimble pushes open the valve core, and the gas in the tire enters the pressure sensor through the hollow channel of the thimble.

[0018] As a preferred solution of the present invention, the MCU control module calculates the tire pressure value according to the data of the pressure sensor and feedbacks the tire pressure state through the color change of the LED indicator light.

[0019] As a preferred solution of the present invention, the display logic of the LED indicator light is that it lights red when the tire pressure value is lower than the preset threshold and lights green when it is higher than or equal to the preset threshold.

[0020] As a preferred solution of the present invention, a nozzle sealing ring is provided between the nozzle connector and the aluminum alloy lower shell to enhance airtightness.

[0021] As a preferred solution of the present invention, the dynamic sealing ring is made of high - temperature resistant rubber material to ensure the sealing of the sensor cavity.

[0022] As a preferred solution of the present invention, the surface of the aluminum alloy upper shell is provided with anti - slip patterns for easy pressing operation, and the aluminum alloy lower shell is hermetically connected to the nozzle connector through a dynamic sealing ring.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] In the present invention, by pressing the aluminum alloy upper shell, the return spring is compressed, the thimble pushes open the valve core, and the gas in the tire enters the pressure sensor through the hollow channel of the thimble. This design changes the traditional way of tire pressure detection that may require complex operations or specific tools. Users only need to simply press the detection cap to quickly achieve tire pressure detection, and the operation is more convenient and fast.

[0025] The MCU control module calculates the tire pressure value based on the data from the pressure sensor and feedbacks the tire pressure status through the color change of the red - green dual - color LED indicator. When the tire pressure value is lower than the preset threshold, the red light is on; when it is higher than or equal to the preset threshold, the green light is on. This intuitive color display method allows users to judge whether the tire pressure is normal at a glance without reading complex numerical values, greatly improving the efficiency of information acquisition and reducing the user's usage threshold. Brief Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the main structure of a tire pressure cap with a pressing and flashing light provided by the present invention;

[0027] Figure 2 It is a schematic sectional view of the main body for displaying tire pressure by pressing provided by the present invention;

[0028] Figure 3 It is a schematic diagram of the system program of a tire pressure cap with a pressing and flashing light provided by the present invention.

[0029] Legend Explanation: 1. Aluminum alloy upper shell; 2. Aluminum alloy lower shell; 3. Air nozzle connector; 4. Thimble; 5. Rebound spring; 6. Pressure sensor; 7. Dynamic sealing ring; 8. MCU control module; 9. LED indicator; 10. Button battery; 11. Air nozzle sealing ring; 12. Sensor sealing ring. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0031] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant content. 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 "fixedly installed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

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

[0034] Embodiment

[0035] As Figures 1-3 As shown, the aluminum alloy upper shell 1 and the aluminum alloy lower shell 2 are connected by threads. Due to the characteristics of light weight, high strength and corrosion resistance of the aluminum alloy material, while ensuring the overall firmness and durability of the detection cap, the product weight is reduced, which is convenient for installation on the tire valve. The threaded connection method is simple and reliable. Its principle is that the helix angle of the thread is less than the equivalent friction angle of the thread pair, so as to realize the tight connection between the upper shell 1 and the lower shell 2 and will not loosen easily during normal use. This connection method is convenient for later maintenance and replacement of the internal components of the detection cap. When a certain internal component fails, the upper shell 1 can be easily unscrewed for maintenance.

[0036] The valve connector 3 is specially designed to be fixed to the tire valve. It is tightly fitted with the tire valve through a specific structure and is usually fixed by means of threaded tightening or bayonet. Its function is to ensure that the detection cap can be stably installed on the tire valve and at the same time ensure the correct connection of the gas passage. The tight connection between the valve connector 3 and the tire valve provides a necessary channel basis for the subsequent gas in the tire to enter the detection cap for pressure detection.

[0037] The thimble 4 is of a hollow structure and is arranged inside the aluminum alloy lower shell 2 and contacts the valve core. When the user presses the aluminum alloy upper shell 1, the downward pressure of the upper shell 1 is transmitted to the thimble 4, causing the return spring 5 sleeved outside the thimble 4 to be compressed. According to the elastic principle of the spring, the spring 5 will generate a reaction force when it is compressed by an external force. At this time, the thimble 4 pushes open the valve core under the action of pressure. Since the thimble 4 is of a hollow structure, the gas in the tire enters the pressure sensor 6 through this hollow channel. When the user releases the pressed aluminum alloy upper shell 1, the return spring 5, based on its elastic restoring force, pushes the thimble 4 to reset. The thimble 4 leaves the valve core, and the valve core closes again to prevent the gas in the tire from continuing to leak.

[0038] The pressure sensor 6 is installed inside the aluminum alloy upper shell 1 and is sealed by the sensor sealing ring 12. The pressure sensor 6 uses principles such as piezoresistive or capacitive to detect gas pressure. When the gas in the tire enters the pressure sensor 6, it will cause physical property changes in the sensitive elements inside the sensor. For example, the piezoresistive sensor will cause a change in resistance value due to pressure change, and the capacitive sensor will cause a change in capacitance value. These changes are converted into electrical signals and output through the circuit.

[0039] A nozzle sealing ring 11 is provided between the nozzle connector 3 and the aluminum alloy lower shell 2, and its function is to further enhance the airtightness of the entire detection cap. The nozzle sealing ring 11 is usually made of elastic materials such as rubber. Utilizing its good elasticity, a tight seal is formed between the nozzle connector 3 and the aluminum alloy lower shell 2 to prevent gas from leaking at the connection. The dynamic sealing ring 7 is made of high-temperature resistant rubber material. In a high-temperature environment, the rubber can still maintain good elasticity and sealing performance, ensuring the airtightness of the sensor cavity, guaranteeing that the pressure sensor 6 can accurately measure the true air pressure inside the tire, and avoiding measurement errors caused by gas leakage.

[0040] The MCU control module 8 is electrically connected to the pressure sensor 6. After the electrical signals output by the pressure sensor 6 are transmitted to the MCU control module 8, the MCU control module 8 processes and analyzes these electrical signals according to a preset algorithm. For example, it converts the electrical signals related to pressure output by the sensor into actual tire pressure values. It can quickly process the data collected by the pressure sensor 6 because the MCU integrates a central processing unit, a memory, and various interface circuits inside, and can efficiently run data processing programs.

[0041] The LED indicator 9 includes a red and green dual-color LED and is connected to the MCU control module 8. When the MCU control module 8 calculates the tire pressure value, it will control the color display of the LED indicator 9 according to a preset threshold. When the tire pressure value is lower than the preset threshold, the MCU control module 8 outputs a corresponding control signal to turn on the red light, prompting the user that the tire pressure is too low; when the tire pressure value is higher than or equal to the preset threshold, the MCU control module 8 outputs another control signal to turn on the green light, informing the user that the tire pressure is normal. This intuitive color display method allows users to quickly judge the tire pressure status without complex operations and numerical interpretations.

[0042] The button battery 10 supplies power to the pressure sensor 6, the MCU control module 8, and the LED indicator 9. The button battery 10 has the advantages of small size, stable voltage, low self-discharge rate, etc., and can provide stable power for the electronic components inside the detection cap. Its working principle is based on the chemical reaction inside the battery to generate electrical energy, and through the circuit connection between the positive and negative electrodes, the electrical energy is transmitted to each electronic component that needs power supply to ensure their normal operation.

[0043] The aluminum alloy lower shell 2 is hermetically connected to the nozzle connector 3 through the dynamic sealing ring 7, thereby forming a seal and maintaining good airtightness.

[0044] Summary of the working process:

[0045] When the user presses the aluminum alloy upper shell 1, the pressure of the upper shell 1 is transmitted to the thimble 4, causing the return spring 5 to compress. The thimble 4 opens the valve core, and the gas inside the tire enters the pressure sensor 6 through the hollow channel of the thimble 4.

[0046] The pressure sensor 6 converts the physical quantity into an electrical signal according to the gas pressure change and outputs it to the MCU control module 8.

[0047] The MCU control module 8 processes and analyzes the electrical signal transmitted by the pressure sensor 6 and calculates the actual tire pressure value.

[0048] The MCU control module 8 compares the calculated tire pressure value with the preset threshold. When the tire pressure value is lower than the preset threshold, it controls the red light of the LED indicator 9 to turn on; when the tire pressure value is higher than or equal to the preset threshold, it controls the green light of the LED indicator 9 to turn on, and the user judges the tire pressure status through the color of the LED indicator 9.

[0049] When the user releases the aluminum alloy upper shell 1, the return spring 5 pushes the thimble 4 to reset, the valve core closes, and the detection process ends.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A push-type tire pressure detection cap, characterized in that: include: An aluminum alloy upper shell (1), wherein the connection portion of the aluminum alloy upper shell (1) is threadedly connected to an aluminum alloy lower shell (2); An air nozzle connecting piece (3), used for fixing to the tire air nozzle; The ejector pin (4) is a hollow structure, is arranged inside the aluminum alloy lower shell (2), and is in contact with the valve core; A rebound spring (5), sleeved on the outside of the ejector pin (4), and used for resetting the ejector pin (4); A pressure sensor (6) is arranged in the aluminum alloy upper shell (1) and is sealed by a sensor sealing ring (12); An MCU control module (8) electrically connected to the pressure sensor (6); An LED indicator light (9), comprising a red and green dual-color LED, connected to the MCU control module (8); A button battery (10) supplies power to the pressure sensor (6), the MCU control module (8) and the LED indicator light (9).

2. The tire pressure cap with a push-down flashing light according to claim 1, characterized in that: When the aluminum alloy upper shell (1) is pressed, the rebound spring (5) is compressed, the ejector pin (4) pushes open the valve core, and the gas in the tire enters the pressure sensor (6) through the hollow channel of the ejector pin (4).

3. The tire pressure cap with a push-down flashing light according to claim 2, characterized in that: The MCU control module (8) calculates the tire pressure value according to the data of the pressure sensor (6), and feeds back the tire pressure status through the color change of the LED indicator light (9).

4. The tire pressure cap with a push-down flashing light according to claim 3, characterized in that: The display logic of the LED indicator light (9) is that a red light is turned on when the tire pressure value is lower than a preset threshold value, and a green light is turned on when the tire pressure value is higher than or equal to the preset threshold value.

5. The tire pressure cap with a push-down flashing light according to claim 4, characterized in that: A gas nozzle sealing ring (11) is provided between the gas nozzle connecting piece (3) and the aluminum alloy lower shell (2) to enhance air tightness.

6. The tire pressure cap with a push-down flashing light according to claim 5, characterized in that: The dynamic sealing ring (7) is made of high temperature resistant rubber material to ensure the sealing performance of the sensor cavity.

7. The tire pressure cap with a push-down flashing light according to claim 6, characterized in that: The surface of the aluminum alloy upper shell (1) is provided with anti-slip patterns to facilitate pressing operations, and the aluminum alloy lower shell (2) is sealedly connected to the air nozzle connector (3) via a dynamic sealing ring (7).

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