Sealed waterproof and dustproof combined cover for oil filling hole of oil tank
By designing a sealed waterproof and dustproof combination cover for the fuel tank filling hole, the problem of contamination caused by the exposure of the fuel tank filling hole was solved, achieving effective waterproof and dustproof effects, and ensuring fuel quality and equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-20
AI Technical Summary
The fuel filler neck of the fuel tank is exposed to the outside for a long time, making it susceptible to contaminants such as rainwater, mud, and dust, which can lead to internal contamination of the fuel tank, fuel deterioration, or pipeline blockage.
Design a sealed waterproof and dustproof combination cover for fuel tank filling port, including an outer protective cover and a sealing component. The outer protective cover is made of high-strength engineering plastic, with a sloping top design to guide rainwater, and a waterproof fabric at the bottom fixed by a pull rope. The inner sealing cover and sealing ring are distributed in multiple steps to enhance the sealing effect.
It effectively blocks dust and rainwater from entering the fuel filler neck, improves sealing, prevents contaminant intrusion, extends service life, and ensures fuel quality.
Smart Images

Figure CN224013389U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of automobile parts, specifically a sealing type waterproof and dustproof combination cover for oil tank filler. BACKGROUND
[0002] The automobile oil tank is a container for storing fuel to provide continuous power for the engine. Its capacity directly affects the vehicle's range, and the design needs to consider safety, corrosion resistance and lightweight.
[0003] For some large vehicles, the chassis structure of these vehicles is simple, the middle is a girder, and the top is a carriage. There is enough space on both sides of the girder to place the oil tank, so the oil tank of a large truck is mostly placed on both sides of the girder and exposed on the side of the vehicle body.
[0004] In terms of the filler, if the oil tank is installed behind the vehicle head, it will be very inconvenient to fill up the oil tank, so the oil tank filler is usually designed at the highest point of the oil tank to fill up the oil tank. This design exposes the oil tank and the filler to the outside.
[0005] However, for some freight trucks, long-distance buses, engineering machinery and the like, they often need to travel in complex environments (such as construction sites, mining areas, muddy roads), and their oil tank filler is exposed to the outside for a long time, which is easy to be invaded by rainwater, mud, dust and other pollutants, resulting in pollution inside the oil tank, deterioration of fuel or blockage of pipelines. INVENTION CONTENTS
[0006] In order to solve the above technical problems, the utility model provides a sealing type waterproof and dustproof combination cover for an oil tank filler to solve the problem that the oil tank filler is exposed to the outside for a long time in the prior art, which may cause pollutants to invade.
[0007] A sealing type waterproof and dustproof combination cover for an oil tank filler, comprising an outer protective cover sleeved on the filler, a waterproof cloth being installed at the bottom of the outer protective cover, and a pull rope being arranged at the bottom of the waterproof cloth.
[0008] Further comprising a sealing assembly installed on the inner wall of the outer protective cover to further seal the filler.
[0009] Preferably, the outer protective cover is in the shape of a cylinder as a whole, and the outer protective cover is made of a component made of high-strength engineering plastic.
[0010] Preferably, the top of the outer protective cover has an inclined portion inclined downward.
[0011] Preferably, the waterproof cloth has a vertical slit, and both ends of the pull rope are arranged to come out of the slit of the waterproof cloth.
[0012] Preferably, the waterproof cloth has a circular cross-section profile, and the top of the waterproof cloth is fixedly connected to the bottom of the outer protective cover, and the diameter of the waterproof cloth is the same as the diameter of the outer protective cover.
[0013] Preferably, the sealing assembly comprises an inner sealing cover and a sealing ring, the inner sealing cover is made of oil-resistant rubber material, the sealing ring is installed in the inner sealing cover, and the sealing ring is arranged in multiple layers in the inner sealing cover.
[0014] Compared with the prior art, the utility model has the advantages of:
[0015] 1、The outer protective cover is sleeved on the oil filler, the waterproof cloth is installed at the bottom of the outer protective cover, the bottom of the waterproof cloth can be tightened by pulling the pull ropes at both ends of the bottom of the waterproof cloth, the outer protective cover can be fixed on the oil filler, dust or rainwater is effectively prevented from entering the oil filler.
[0016] 2、The outer protective cover is sleeved on the oil filler, the waterproof cloth is installed at the bottom of the outer protective cover, the bottom of the waterproof cloth can be tightened by pulling the pull ropes at both ends of the bottom of the waterproof cloth, the outer protective cover can be fixed on the oil filler, dust or rainwater is effectively prevented from entering the oil filler.
[0017] 3、The outer protective cover is sleeved on the oil filler, the waterproof cloth is installed at the bottom of the outer protective cover, the bottom of the waterproof cloth can be tightened by pulling the pull ropes at both ends of the bottom of the waterproof cloth, the outer protective cover can be fixed on the oil filler, dust or rainwater is effectively prevented from entering the oil filler. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The utility model discloses a whole sealing type waterproof and dustproof combined cover component structure diagram Figure 1 ;
[0019] Figure 2 The utility model discloses a whole sealing type waterproof and dustproof combined cover component structure diagram Figure 2 ;
[0020] Figure 3 The utility model discloses an outer protective cover and a sealing ring and the like component structure diagram.
[0021] In the drawing:
[0022] 1, outer protective cover, 2, waterproof cloth, 3, pull rope, 4, inclined part, 5, sealing cover, 6, sealing ring. DETAILED DESCRIPTION
[0023] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.
[0024] As shown in the accompanying Figure 1 to the accompanying Figure 3 As shown in the accompanying
[0025] Example one: the utility model provides a sealing type waterproof dustproof combination cover for oil tank oil filler hole, including the outer protective cover 1 of the oil filler, the bottom of outer protective cover 1 is equipped with waterproof cloth 2, the bottom of waterproof cloth 2 is equipped with pull rope 3.
[0026] It further includes a sealing assembly installed on the inner wall of the outer protective cover 1 to further seal the oil filler.
[0027] It should be noted that by setting the outer protective cover 1, the outer protective cover 1 is sleeved on the oil filler, the waterproof cloth 2 is installed at the bottom of the outer protective cover 1, and by pulling the pull rope 3 at both ends of the bottom of the waterproof cloth 2, the bottom of the waterproof cloth 2 can be tightened, so that the outer protective cover 1 can be fixed on the oil filler, effectively reducing the entry of dust or rainwater into the oil filler, and blocking pollutants.
[0028] In this embodiment, the outer protective cover 1 is cylindrical as a whole, and the outer protective cover 1 is made of high-strength engineering plastic.
[0029] It should be noted that by designing the outer protective cover 1 into a material of high-strength engineering plastic, the strength of the outer protective cover 1 is improved, the damage of the outer protective cover 1 caused by collision is reduced, and the service life of the outer protective cover 1 is improved.
[0030] In this embodiment, the top of the outer protective cover 1 has an inclined portion 4 inclined downward.
[0031] It should be noted that by providing the inclined portion 4 inclined downward at the top of the outer protective cover 1, when it rains, the rainwater can better slide off the inclined portion 4 after falling on the inclined portion 4, reducing the accumulation of rainwater on the top of the outer protective cover 1.
[0032] In this embodiment, the waterproof cloth 2 has a vertical slit, and the two ends of the pull rope 3 come out of the slit of the waterproof cloth 2.
[0033] It should be noted that the bottom of the waterproof cloth 2 can be tightened, which is simple and convenient to operate.
[0034] In the embodiment, the waterproof cloth 2 has a circular cross section, and the top of the waterproof cloth 2 is fixedly connected to the bottom of the outer protective cover 1, and the diameter of the waterproof cloth 2 is the same as the diameter of the outer protective cover 1.
[0035] It should be noted that the waterproof cloth 2 is fixedly connected to the bottom of the outer protective cover 1, and the mounting mode of the waterproof cloth 2 is not limited here, and the waterproof cloth 2 can be connected in the mounting chamber by ultrasonic sewing, or can be integrally formed by injection molding, that is, the waterproof cloth 2 is connected together when the outer protective cover 1 is injection molded.
[0036] In the embodiment, the sealing assembly includes an inner sealing cover 5 and a sealing ring 6, the inner sealing cover 5 is made of an oil-resistant rubber material, the sealing ring 6 is installed in the inner sealing cover 5, and the sealing ring 6 is distributed in multiple layers in the inner sealing cover 5.
[0037] It should be noted that the sealing assembly is installed in the inner wall of the outer protective cover 1, the inner sealing cover 5 is connected to the inner wall of the outer protective cover 1, the sealing ring 6 is installed on the inner wall of the inner sealing cover 5, the sealing ring 6 is in interference fit with the oil filler neck, and the sealing degree of the oil filler neck is further improved, and the sealing ring 6 is designed in multiple layers in the inner sealing cover 5 to form multi-stage sealing.
[0038] The use method of the above embodiment is that when the oil tank oil filler is needed to be waterproof and dustproof, the outer protective cover 1 is sleeved on the oil filler neck, the sealing ring 6 passes through the oil filler neck, the waterproof cloth 2 is installed at the bottom of the outer protective cover 1, the bottom of the waterproof cloth 2 is tightened by pulling the pull rope 3 at both ends of the bottom of the waterproof cloth 2, so that the outer protective cover 1 can be fixed and fixed on the oil filler neck, dust or rainwater entering the oil filler neck is effectively reduced, and pollutants are blocked.
[0039] The embodiments of the utility model are given for example and description, although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.
Claims
1. A sealed, waterproof, and dustproof combination cover for a fuel tank filler neck, characterized in that, include: An outer protective cover (1) is fitted over the fuel filler neck. A waterproof fabric (2) is installed at the bottom of the outer protective cover (1). A drawstring (3) is provided at the bottom of the waterproof fabric (2). It also includes a sealing assembly, which is installed on the inner wall of the outer protective cover (1) to further seal the oil filler port.
2. The sealed waterproof and dustproof combination cover for the fuel tank filler hole as described in claim 1, characterized in that: The outer protective cover (1) is cylindrical in shape and is made of high-strength engineering plastic.
3. The sealed waterproof and dustproof combination cover for the fuel tank filler hole as described in claim 1, characterized in that: The top of the outer protective cover (1) has a downward-sloping section (4).
4. The sealed waterproof and dustproof combination cover for the fuel tank filler hole as described in claim 1, characterized in that: The waterproof fabric (2) has a vertical slit, and the two ends of the pull cord (3) protrude from the slit in the waterproof fabric (2).
5. The sealed waterproof and dustproof combination cover for the fuel tank filler hole as described in claim 4, characterized in that: The waterproof fabric (2) has a circular cross-sectional profile, and the top of the waterproof fabric (2) is fixedly connected to the bottom of the outer protective cover (1). The diameter of the waterproof fabric (2) is the same as the diameter of the outer protective cover (1).
6. The sealed waterproof and dustproof combination cover for the fuel tank filler hole as described in claim 1, characterized in that: The sealing assembly includes an inner sealing cover (5) and a sealing ring (6). The inner sealing cover (5) is made of oil-resistant rubber material. The sealing ring (6) is installed inside the inner sealing cover (5) and is distributed in multiple steps inside the inner sealing cover (5).