Nozzle beautifying air nozzle cap capable of displaying pressure through pressing

Abstract

The invention provides an American valve air tap cap capable of displaying pressure through pressing, and relates to the technical field of air tap caps, the American valve air tap cap comprises a shell, a pressure gauge shell, a spring tube, a pressure gauge cover, a pressure gauge cover, a pressure gauge cover and a pressure gauge cover, the bottom of the shell is provided with a bottom shell, the bottom shell is provided with a thread structure matched with an American valve, and the spring tube is fixed in the shell and is provided with scales printed on the surface. The spring tube is a hollow spiral copper tube, the spring tube stretches after being inflated and drives the pointer to rotate around the circle center, the pressure value is displayed through the scales, the pressure gauge shell with the scales printed on the surface is fixedly arranged in the shell, and the spring tube made of the hollow spiral copper tube is connected with the pressure gauge shell through brazing. When the pressure gauge is used, gas in the tire enters the spring tube, the inflated spring tube stretches, the stretching action can drive the pointer connected with the spring tube to rotate around the circle center, and a user can directly and clearly read the pressure value of the current tire through the scales on the pressure gauge shell.

Description

Technical Field

[0001] The invention relates to the technical field of gas nozzle caps, and in particular to a beauty-mouth gas nozzle cap capable of displaying pressure when pressed. Background Art

[0002] With the widespread use 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 more and more attention. Tire pressure is a key factor affecting riding safety, comfort and tire service life, so accurate monitoring and good air tightness guarantee are particularly important.

[0003] Among the existing market products, there is a common tire pressure cap, which is designed to facilitate users to roughly understand the tire pressure. This tire pressure cap is usually installed and used by screwing it onto the valve cap. It has a thimble structure inside. When installed and operated, the built-in thimble is used to push up the valve core to deflate the tire, thereby realizing a certain degree of tire pressure judgment.

[0004] However, this type of traditional tire pressure cap has exposed problems during actual use. Its ejector pin often remains in the lifted state for a long time after lifting the valve core, which causes the valve core to be unable to return to the closed position normally, thereby losing its original airtight function. In addition, due to its relatively single tire pressure detection method, it is impossible to accurately check the corresponding tire pressure value, resulting in the user being unable to clearly understand the tire pressure situation.

[0005] Therefore, we propose a Marantz air valve cap that can display pressure when pressed. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the prior art. However, this type of traditional tire pressure cap has exposed problems during actual use. Its ejector pin often remains in the lifted state for a long time after lifting the valve core, which makes it impossible for the valve core to return to the closed position normally, thereby losing its original airtight function. In addition, since its tire pressure detection method is relatively single, it is impossible to accurately check the corresponding tire pressure value, resulting in the user being unable to clearly understand the tire pressure situation.

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

[0008] A Marantz gas nozzle cap capable of displaying pressure by pressing, comprising:

[0009] An outer shell, wherein a bottom shell is provided at the bottom of the outer shell, and the bottom shell is provided with a threaded structure adapted to a Schrader gas nozzle;

[0010] The pressure gauge case is fixed inside the housing and has scales printed on the surface;

[0011] The spring tube is connected to the pressure gauge case by brazing. The spring tube is a hollow spiral copper tube. After being inflated, it stretches and drives the pointer to rotate around the center of the circle, and the pressure value is displayed through the scale;

[0012] A hollow vent ejector pin is located inside the housing and pushes up the valve core to achieve deflation when pressed;

[0013] A reset spring, connected between the outer shell and the bottom shell, for resetting the ejector pin;

[0014] The dynamic sealing ring is arranged at the connection between the outer shell and the bottom shell to ensure the sealing.

[0015] As a preferred solution of the present invention, the scale range of the pressure gauge case is 0-1.6MPa, and is marked with colors to distinguish safe pressure ranges.

[0016] As a preferred solution of the present invention, the outer shell and the bottom shell are integrally formed of rust-proof metal material, and the surface is provided with anti-slip textures.

[0017] As a preferred solution of the present invention, the dynamic sealing ring includes at least one annular sealing ring made of a pressure-resistant elastic material.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, the traditional tire pressure cap ejector pin lifts up the valve core for a long time, resulting in airtight failure. In the present invention, a reset spring is connected between the outer shell and the bottom shell. When the user presses the hollow vent ejector pin to lift the valve core, once the pressure is released, the reset spring can quickly take effect, and push the ejector pin to reset with its elastic restoring force, so that the valve core returns to the closed position in time. This design fundamentally eliminates the situation where the valve core cannot be closed due to being lifted up for a long time, ensures that the tire valve core always maintains a good airtight effect, ensures the stability of the tire pressure, and avoids safety hazards caused by pressure leakage and premature tire wear.

[0020] A pressure gauge case with a scale printed on the surface is fixed inside the outer shell, and a spring tube made of a hollow spiral copper tube is connected to the pressure gauge case by brazing. When the hollow ventilation pin lifts the valve core, the gas in the tire enters the spring tube, and the inflated spring tube will stretch. This stretching action will drive the pointer connected to the spring tube to rotate around the center of the circle. The user can directly read the current tire pressure value clearly through the scale on the pressure gauge case. Moreover, the scale range of the pressure gauge case is set to 0-1.6MPa, which meets the common tire pressure measurement needs. At the same time, it is also marked with colors to distinguish the safe pressure range. The user can intuitively judge whether the tire pressure is within the safe range at a glance, which greatly improves the user's understanding of the tire pressure situation, and helps the user to detect abnormal tire pressure in time and take corresponding measures to ensure driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the main structure of a Meizu gas nozzle cap capable of displaying pressure by pressing provided by the present invention;

[0022] Figure 2 A schematic cross-sectional view of a main body of a Meizu gas nozzle cap that displays pressure when pressed provided by the present invention.

[0023] Legend: 1. Pressure gauge case; 2. Spring tube; 4. Dynamic sealing ring; 5. Hollow vent ejector pin; 6. Outer shell; 7. Bottom shell; 8. Reset spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to related 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.

[0026] 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 also 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.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Example

[0029] like Figure 1-2As shown, the present invention provides a technical solution: In the traditional tire pressure cap design, the ejector pin structure often has defects. After the ejector pin lifts the valve core, due to the lack of an effective reset mechanism, the ejector pin will remain in the state of lifting the valve core for a long time. As a key component of the tire air tightness, the valve core will continue to leak gas in the tire if it is in an open state for a long time. This will not only cause the tire pressure to gradually decrease, affecting the vehicle's driving performance, such as increasing fuel consumption and reducing handling stability, but also accelerate tire wear, shorten tire service life, and even in extreme cases, may cause serious safety accidents such as tire blowouts.

[0030] Principle of the Invention: The present invention cleverly connects a return spring 8 between the outer shell 6 and the bottom shell 7. The principle is based on the elastic characteristics of the spring. When the spring is subjected to an external force, it will deform and store elastic potential energy. When the external force disappears, the spring will release the elastic potential energy and return to its initial state. In this device, when the user presses the hollow vent pin 5, the pin overcomes the elastic force of the return spring 8 to lift the valve core. At this time, the return spring 8 is compressed and stores elastic potential energy. Once the user releases the pressure, the return spring 8 quickly releases the elastic potential energy, generates an upward elastic force, pushes the pin upward, causes the pin to leave the valve core, and the valve core returns to the closed position in time under the action of its own elasticity. This design fundamentally solves the problem that the valve core in the traditional tire pressure cap cannot be closed normally, ensures that the tire valve core can always maintain a good airtight effect, stabilizes the tire pressure, ensures driving safety, and reduces tire wear.

[0031] The present invention firmly fixes a pressure gauge case 1 with a scale printed on the surface inside the housing 6, and connects a spring tube 2 made of a hollow spiral copper tube to the pressure gauge case 1 by brazing. The spring tube 2 utilizes the elastic deformation principle of metal materials. When the gas in the tire enters the spring tube 2 through the hollow vent pin 5, the spring tube 2 will be stretched and deformed due to the effect of the gas pressure. According to Hooke's law, within the elastic limit, the elastic force of the spring is proportional to the elongation of the spring. Here, the stretching deformation of the spring tube 2 is related to the pressure of the gas entering, and the stretching action of the spring tube 2 will drive the pointer connected to it to rotate around the center of the circle. The rotation angle of the pointer is proportional to the deformation of the spring tube 2, and the deformation of the spring tube 2 is proportional to the gas pressure in the tire, so the user can directly and clearly read the current tire pressure value through the position of the pointer on the pressure gauge case 1 with a scale printed on it. In addition, the scale range of the pressure gauge case 1 is carefully set to 0-1.6MPa, which covers the air pressure measurement requirements of common tires. At the same time, in order to allow users to more intuitively judge whether the tire pressure is normal, the scale is also marked with colors to distinguish the safe pressure range. When the pointer points to the green area, it means that the tire pressure is within the safe range; when the pointer points to the red area, it prompts the user that the tire pressure is abnormal. This design greatly improves the user's understanding of the tire pressure situation, making it easier for users to detect abnormal tire pressure in time and take corresponding measures such as filling or deflation to effectively ensure driving safety.

[0032] The outer shell 6 and the bottom shell 7 of the present invention are integrally formed with rust-proof metal material. Rust-proof metal materials such as stainless steel have good corrosion resistance. During the daily driving of the vehicle, the tire valve cap will face various complex environments, such as humid air, rain, salt on the road, and possible acid and alkali substances. The rust-proof metal material can effectively resist the erosion of these corrosive substances and prevent the valve cap from rusting and being damaged. The one-piece molding process is to form the metal material in a specific mold at one time, thereby avoiding the gaps and connection points caused by the splicing of multiple parts. This not only enhances the firmness of the connection between the outer shell 6 and the bottom shell 7, and reduces the risk of damage that may occur due to loose connection of the parts and external forces such as vibration and impact during the driving of the vehicle, but also makes the valve cap more beautiful and durable as a whole, prolongs its service life, and enables it to work stably in various harsh environments.

[0033] A dynamic seal ring 4 is provided at the connection between the outer shell 6 and the bottom shell 7, and the dynamic seal ring 4 includes at least one annular seal ring, which is made of a pressure-resistant elastic material, such as nitrile rubber. The sealing principle is based on the elastic deformation and pressure action of the material. When the outer shell 6 and the bottom shell 7 are installed together, the dynamic seal ring 4 is squeezed, and due to its good elasticity, a tight seal is formed at the connection between the outer shell 6 and the bottom shell 7. Under the action of the tire pressure, even if there is a certain pressure difference, the dynamic seal ring 4 can rely on its own elasticity and pressure resistance to effectively prevent gas from leaking from the connection between the outer shell 6 and the bottom shell 7. This design ensures the overall sealing of the valve cap, ensures the accuracy of the amount of gas entering the spring tube 2 for pressure detection, and further ensures the accuracy of tire pressure detection, avoids the problem of inaccurate pressure display caused by gas leakage, and provides users with reliable tire pressure detection results.

[0034] The surface of the outer shell 6 is provided with anti-skid patterns, and its design principle is to increase the friction by increasing the surface roughness. When the user operates the air valve cap, whether pressing the hollow vent pin 5 or installing or removing the air valve cap, the hand contacts the surface of the outer shell 6. The anti-skid patterns can effectively increase the friction between the hand and the outer shell 6. According to the friction formula F=μN (where F is the friction force, μ is the friction coefficient, and N is the positive pressure), when the positive pressure remains unchanged, the anti-skid patterns increase the friction coefficient μ, thereby increasing the friction. This prevents hand slippage during the pressing process due to sweating, oil stains on the hands, or improper force during operation, making the operation smoother and more stable, improving the convenience and comfort of the user, and reducing the difficulty of operation. Even users who are not familiar with the operation can easily complete tire pressure detection.

[0035] Workflow summary:

[0036] Installation: The bottom shell 7 of the valve cap is screwed and installed on the tire's Schrader valve through its threaded structure that matches the Schrader valve. During the installation process, the dynamic seal 4 forms a seal under the squeeze of the outer shell 6 and the bottom shell 7, ensuring that there will be no gas leakage after the entire valve cap is installed.

[0037] Tire pressure detection operation: the user presses the outer shell 6 of the valve cap with his hand, and the pressure of the outer shell 6 is transmitted to the hollow vent ejector pin 5, and the hollow vent ejector pin 5 moves downward against the elastic force of the return spring 8, and lifts up the valve core. At this time, the gas in the tire enters the spring tube 2 through the hollow vent ejector pin 5.

[0038] Pressure display: The gas pressure entering the spring tube 2 causes the spring tube 2 to stretch and deform, and the stretching of the spring tube 2 drives the pointer connected to it to rotate around the center of the circle. The pointer indicates the current tire pressure value on the pressure gauge case 1 with a scale printed on it. The user can read the pressure value through the scale and judge whether the tire pressure is within the safe range according to the color distinction on the scale.

[0039] Reset: When the user releases the hand pressing the valve cap, the reset spring 8 releases the elastic potential energy, pushing the hollow vent pin 5 upward, the pin leaves the valve core, and the valve core returns to the closed state, completing a tire pressure test operation. The valve cap continues to be installed on the tire valve so that the tire pressure test can be performed at any time next time.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A Meizu gas valve cap that displays pressure when pressed, characterized in that: include: A shell (6), wherein a bottom shell (7) is provided at the bottom of the shell (6), and the bottom shell (7) is provided with a threaded structure adapted to a Schrader gas nozzle; A pressure gauge housing (1) is fixed inside the housing (6) and has scales printed on its surface; A spring tube (2) is connected to the pressure gauge housing (1) by brazing, wherein the spring tube (2) is a hollow spiral copper tube, which expands after being inflated and drives the pointer to rotate around the center of a circle, and displays the pressure value through a scale; A hollow vent ejector pin (5) is disposed inside the housing (6) and pushes up the valve core to achieve deflation when pressed; A reset spring (8), connected between the outer shell (6) and the bottom shell (7), for resetting the ejector pin; The dynamic sealing ring (4) is arranged at the connection between the outer shell (6) and the bottom shell (7) to ensure the sealing performance.

2. A beauty mouth gas valve cap with a pressing display pressure according to claim 1, characterized in that: The scale range of the pressure gauge housing (1) is 0-1.6 MPa, and is marked with colors to distinguish safe pressure ranges.

3. A pressure displaying beauty mouth gas valve cap according to claim 2, characterized in that: The outer shell (6) and the bottom shell (7) are integrally formed of rust-proof metal material, and the surface is provided with anti-slip textures.

4. A pressure displaying beauty mouth gas valve cap according to claim 3, characterized in that: The dynamic sealing ring (4) comprises at least one annular sealing ring, which is made of a pressure-resistant elastic material.

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