A fuel tank lock nut with a sealing gasket

Abstract

This utility model relates to a fuel tank locking nut with a sealing gasket, belonging to the technical field of fuel tank locking nuts. The fuel tank locking nut with a sealing gasket includes: a nut with a sealing gasket at its bottom; and a sealing warning mechanism for alerting the user to leak oil from the sealing gasket. The sealing warning mechanism includes a mounting groove at the bottom of the nut, a warning component at the bottom of the mounting groove, and a sealing component between the warning component and the nut. The sealing warning mechanism can effectively detect and provide early warning of gasket leakage. Through the warning component, leaking oil can be identified early and a warning signal can be issued, preventing oil spillage. The sealing component, by indicating changes in compression pressure, helps installers confirm the sealing status, preventing seal failure due to over-pressure or under-pressure, and improving the stability of the sealing effect.

Description

Technical Field

[0001] This utility model relates to the technical field of oil tank locking nuts, and in particular to an oil tank locking nut with a sealing gasket. Background Technology

[0002] A fuel tank lock nut is a fastening assembly used to reliably lock components such as fuel tank caps, pipe fittings, or flanges to the fuel tank opening. It is commonly used in automotive fuel tanks, mechanical equipment fuel tanks, or liquid storage containers. Its main function is to provide axial locking force through the tightening thread structure, while simultaneously forming a seal at the fuel tank interface with a sealing gasket to prevent liquid leakage and ensure the sealing and safety of the fuel system.

[0003] In practical use, slight leaks may occur in gaskets due to factors such as long-term vibration, temperature fluctuations, or aging of sealing materials. However, in the current structure, once a small leak occurs, the liquid often seeps out slowly along irregular gaps, making it difficult to detect. Especially in the early stages of leakage, the amount of leakage is insufficient to form obvious traces and is often overlooked until the liquid overflows or the pressure drops, at which point it is often discovered that pollution or equipment failure has already occurred. Utility Model Content

[0004] Therefore, it is necessary to provide a tank locking nut with a sealing gasket to address the problem that in actual use, sealing gaskets are prone to slight leakage due to vibration, temperature changes or aging, but the existing structure makes it difficult to detect early leakage in time. Liquid often seeps out slowly along the gaps, and it is not easy to form obvious traces. It is often only discovered after it has overflowed, which has already caused pollution or potential failure.

[0005] A tank locking nut with a sealing gasket includes: a nut, wherein a sealing gasket is provided at the bottom of the nut; a sealing warning mechanism for warning of oil leakage from the sealing gasket; wherein the sealing warning mechanism includes a mounting groove formed at the bottom of the nut, a warning component is provided at the bottom of the mounting groove, and a sealing component is provided between the warning component and the nut.

[0006] The warning component includes a detection pad fixedly installed at the bottom of a sealing gasket, and multiple display frames are fixedly installed on the outer side of the detection pad.

[0007] The display frame is embedded in the surface of the detection pad, and a liquid inlet is provided at the bottom of the display frame.

[0008] The display frame is set in an L-shape, and multiple display frames are arranged in a surrounding manner on the surface of the detection pad.

[0009] The sealing assembly includes a support frame fixedly installed at the bottom of the nut, and the sealing gasket has a connecting groove inside, which is sealed and snapped into the support frame.

[0010] The support frame is configured as a ring shape, and the shape of the connecting groove is adapted to the support frame.

[0011] A pressure indicator ring is fixedly installed at the bottom of the nut, and the pressure indicator ring abuts against the top of the sealing gasket.

[0012] The pressure indicator ring is hexagonal in shape, and the shape of the pressure indicator ring is adapted to the bottom edge of the nut.

[0013] Beneficial effects

[0014] 1. The sealing warning mechanism can effectively detect and warn of leaks in gaskets. Through the warning component, leaking oil can be identified early and a warning signal issued, preventing oil spillage. The sealing component, by indicating changes in compression pressure, helps installers confirm the sealing status, preventing seal failure due to overpressure or underpressure, and improving the stability of the sealing effect.

[0015] 2. The pressure indicator ring can directly contact the sealing gasket and accurately indicate the gasket's clamping pressure when the nut is tightened. Through close contact with the sealing gasket, the pressure indicator ring can promptly reflect the gasket's stress state, helping users determine whether the ideal sealing clamping force has been achieved and avoiding seal failure caused by overpressure or underpressure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the sealing warning mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the sealing gasket and support frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing gasket and detection gasket structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the detection pad and display frame structure of this utility model.

[0022] Figure label:

[0023] 100. Nut; 200. Sealing gasket; 300. Sealing warning mechanism; 310. Mounting groove; 320. Warning assembly; 321. Detection gasket; 322. Display frame; 323. Liquid inlet; 330. Sealing assembly; 331. Support frame; 332. Connecting groove; 333. Pressure indicator ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The following is combined Figures 1-5 This invention describes a tank locking nut with a sealing gasket.

[0026] In one embodiment, an oil tank locking nut with a sealing gasket includes: a nut 100, with a sealing gasket 200 disposed at the bottom of the nut 100; and a sealing warning mechanism 300 for warning of oil leakage from the sealing gasket 200; wherein the sealing warning mechanism 300 includes a mounting groove 310 formed at the bottom of the nut 100, a warning component 320 disposed at the bottom of the mounting groove 310, and a sealing component 330 disposed between the warning component 320 and the nut 100.

[0027] In this embodiment, the sealing warning mechanism 300 can effectively detect and warn of leakage problems of the sealing gasket 200 during the use of the oil tank locking nut 100. Through the design of the warning component 320, the leaked oil can be effectively identified in the early stage and a warning signal can be issued in time, avoiding the oil overflow caused by the difficulty in detecting leakage under the traditional structure. Through the setting of the sealing component 330, when the nut 100 is tightened, it can indicate the change of compression pressure of the sealing gasket 200, so that the installer can clearly understand the sealing status and avoid sealing failure caused by excessive or insufficient compression, thereby improving the stability of the sealing effect.

[0028] It should be noted that the existing fuel tank locking nut 100 is usually composed of basic components such as the nut 100 body, threads, and bottom sealing gasket 200. The warning component 320 is located below the mounting groove 310 at the bottom of the nut 100. By contacting the sealing gasket 200, it can visually alert the user to the leakage situation when a small leak occurs, without affecting the locking function of the nut 100. The sealing component 330 is located between the nut 100 and the warning component 320. It is responsible for indicating the compression status of the sealing gasket 200, without affecting the basic function of the nut 100, nor hindering its normal rotation and tightening process.

[0029] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the warning component 320 includes a detection pad 321 fixedly installed at the bottom of the sealing pad 200, and multiple display frames 322 are fixedly installed on the outer side of the detection pad 321.

[0030] In this embodiment, the detection gasket 321 is combined with multiple display frames 322 to achieve real-time early warning of leakage status. The detection gasket 321 can detect minute leaks and clearly alert the user through the display frames 322, thereby effectively avoiding the potential risks caused by the difficulty in detecting leaks in traditional fuel tank locking nuts 100. By visually observing changes in the display frames 322, the presence of a leak can be quickly identified.

[0031] The display frame 322 is embedded in the surface of the detection pad 321, and the bottom of the display frame 322 has a liquid inlet 323.

[0032] In this embodiment, when a minor leak occurs in the fuel tank during use, the excess liquid will enter the display frame 322 through the inlet 323 and fill it, so that the display frame 322 can change color after receiving the liquid. This change visually alerts the user that a leak has occurred, thereby effectively providing an early warning and preventing the leak from spreading further.

[0033] It should be noted that the display frame 322 is made of transparent or semi-transparent material, possessing appropriate rigidity and durability to ensure it is not deformed by liquid pressure during use. The display frame 322 contains materials that react to changes in liquid. The liquid indicator material is temperature-sensitive or pH-sensitive, such as liquid crystal material, thermochromic material, or an indicator, which changes color upon contact with oil. These materials change color when filled with liquid, providing an intuitive visual warning. The color change of the display frame 322 can be a gradient, a change from light to dark, or correspond to preset warning colors such as red or yellow, allowing users to easily identify the warning.

[0034] The display frame 322 is set in an L-shape, and multiple display frames 322 are arranged in a surrounding manner on the surface of the detection pad 321.

[0035] In this embodiment, the L-shaped display frame 322 and multiple display frames 322 are arranged in a surrounding manner on the surface of the detection pad 321, which enhances the visual effect of the display frame 322 and makes the display frame 322 visible from multiple angles.

[0036] like Figure 2 , Figure 3 and Figure 4 As shown, the sealing assembly 330 includes a support frame 331 fixedly installed at the bottom of the nut 100, and a connecting groove 332 is provided inside the sealing gasket 200, which is sealed and snapped into the support frame 331.

[0037] In this embodiment, when the nut 100 is installed on the oil tank, the tight connection between the support frame 331 and the connecting groove 332 can effectively prevent the gasket position from shifting due to vibration or external force, thereby maintaining the long-term stability of the sealing state, ensuring that the sealing gasket 200 is under uniform pressure, avoiding local overpressure or underpressure, and thus improving the reliability of the sealing effect.

[0038] The support frame 331 is set in a circular shape, and the shape of the connecting groove 332 is adapted to the support frame 331.

[0039] In this embodiment, the circular design allows the support frame 331 to evenly bear the force of the sealing gasket 200, avoiding poor sealing caused by excessive or insufficient local pressure. During long-term use, the matching structure between the support frame 331 and the connecting groove 332 can still maintain its sealing performance and prevent the gasket from moving or being damaged.

[0040] A pressure indicator ring 333 is fixedly installed at the bottom of the nut 100, and the pressure indicator ring 333 abuts against the top of the sealing gasket 200.

[0041] In this embodiment, the pressure indicator ring 333 can directly contact the sealing gasket 200 and accurately indicate the pressing pressure of the gasket when the nut 100 is tightened. Through close contact with the sealing gasket 200, the pressure indicator ring 333 can reflect the stress state of the sealing gasket 200 in a timely manner, helping the user to judge whether the ideal sealing pressing force has been achieved, and avoiding sealing failure caused by overpressure or underpressure.

[0042] It should be noted that the pressure indicator ring 333 integrates thermochromic or pressure-sensitive color-changing materials, such as liquid crystal color-changing materials, thermosensitive pigments, or other smart pigments. These materials can undergo reversible color changes when subjected to stress or temperature variations. When the nut 100 is tightened, the pressure applied to the pressure indicator ring 333 causes a physical change in the material, resulting in a color change. Specifically, when the nut 100 is tightened to the optimal pressure, the color of the pressure indicator ring 333 will change from transparent or its original color to a preset color such as red or yellow, indicating to the user that the pressure has reached the ideal state.

[0043] The pressure indicator ring 333 is hexagonal in shape, and the shape of the pressure indicator ring 333 is adapted to the bottom edge of the nut 100.

[0044] In this embodiment, the hexagonal pressure indicator ring 333 has stronger structural stability and can effectively withstand pressure changes and external forces during the tightening process of the nut 100, preventing unnecessary deformation or damage to the indicator ring due to pressure changes. In addition, the hexagonal design allows the pressure indicator ring 333 to fit better with the bottom of the nut 100, avoiding loosening or displacement caused by poor fit, thereby ensuring the accuracy of the indicator function.

[0045] Working Principle: During use, the tank locking nut 100 secures the tank cover or connecting component tightly to the tank opening by tightening its threads, simultaneously compressing the sealing gasket 200 to ensure no liquid leakage. The sealing gasket 200 is fixedly installed at the bottom of the nut 100 and uses the sealing warning mechanism 300 for leak detection and warning. During installation, the tank locking nut 100 is rotated to tighten it onto the tank. The bottom of the tank locking nut 100 contacts the sealing gasket 200, generating uniform compression force. At this time, the sealing assembly 330 engages with the connecting groove 332 via the support frame 331, ensuring that the sealing gasket 200 does not shift or deform under pressure, maintaining uniform compression force, and avoiding local overpressure or underpressure, thereby ensuring the seal of the tank interface. When a leak occurs during tank use, the warning assembly 320 activates. The leaked oil enters the display frame 322 through the inlet 323, causing the liquid indicator material inside the display frame 322 to change color. The filling of liquid causes a color change in the display frame 322, thus visually alerting the user to a leak. Multiple display frames 322 are arranged around the surface of the detection gasket 321, enhancing the coverage of the monitoring area and ensuring that a leak can be detected promptly through color changes in its early stages. The pressure indicator ring 333, through contact with the sealing gasket 200, accurately indicates the tightening pressure when the nut 100 is tightened. When the tank locking nut 100 is tightened to the optimal pressure, the color of the pressure indicator ring 333 changes from transparent or its original color to a preset color. This helps the user determine the tightening status of the sealing gasket 200, ensuring an ideal sealing effect and preventing seal failure due to overpressure or underpressure.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An oil tank lock nut having a sealing gasket, characterized by, include: Nut (100), the bottom of which is provided with a sealing gasket (200); A sealing warning mechanism (300) is used to warn of oil leakage from the sealing gasket (200). The sealing warning mechanism (300) includes a mounting groove (310) at the bottom of the nut (100), a warning component (320) is provided at the bottom of the mounting groove (310), and a sealing component (330) is provided between the warning component (320) and the nut (100).

2. The oil tank lock nut with a sealing gasket according to claim 1, characterized in that, The warning component (320) includes a detection pad (321) fixedly installed at the bottom of the sealing pad (200), and multiple display frames (322) are fixedly installed on the outer side of the detection pad (321).

3. The oil tank locking nut with a sealing gasket according to claim 2, characterized in that, The display frame (322) is embedded in the surface of the detection pad (321), and the bottom of the display frame (322) is provided with a liquid inlet (323).

4. The oil tank locking nut with a sealing gasket according to claim 3, characterized in that, The display frame (322) is set in an L-shape, and multiple display frames (322) are arranged in a surrounding manner on the surface of the detection pad (321).

5. The oil tank locking nut with a sealing gasket according to claim 1, characterized in that, The sealing assembly (330) includes a support frame (331) fixedly installed at the bottom of the nut (100), and a connecting groove (332) is provided inside the sealing gasket (200), which is sealed and snapped into the support frame (331).

6. The oil tank locking nut with a sealing gasket according to claim 5, characterized in that, The support frame (331) is configured in a circular shape, and the shape of the connecting groove (332) is adapted to the support frame (331).

7. The oil tank locking nut with a sealing gasket according to claim 1, characterized in that, A pressure indicator ring (333) is fixedly installed at the bottom of the nut (100), and the pressure indicator ring (333) abuts against the top of the sealing gasket (200).

8. The oil tank locking nut with a sealing gasket according to claim 7, characterized in that, The pressure indicator ring (333) is hexagonal in shape, and the shape of the pressure indicator ring (333) is adapted to the bottom edge of the nut (100).

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