A motorcycle fuel tank cap sealing structure

Abstract

This utility model relates to the field of fuel tank cap technology, specifically to a motorcycle fuel tank cap sealing structure, including a fuel tank. A fuel tank opening is fixedly connected to the top of the fuel tank. An external thread is formed at the bottom end of the fuel tank opening. A sealing cap is connected to the external thread of the fuel tank opening. An internal thread is formed at the bottom end of the sealing cap corresponding to the external thread. A bracket is fixedly connected to the top of the sealing cap. A stabilizing frame is fixedly connected to the top of the bracket. An auxiliary handle is fixedly connected to the left end of the stabilizing frame. A pressing handle is rotatably connected to the outside of the stabilizing frame. A connecting rod is slidably connected to the middle of the inside of the stabilizing frame. The connecting rod extends into the inside of the fuel tank opening and slidably connects to the fuel tank opening. Compared with existing motorcycle fuel tank cap sealing structures, this utility model, through the design of a sealing block and a rubber ring, can quickly seal the inside of the fuel tank opening, greatly improving overall practicality.

Description

Technical Field

[0001] This utility model relates to the field of fuel tank cap technology, specifically to a sealing structure for a motorcycle fuel tank cap. Background Technology

[0002] The motorcycle fuel tank cap is a key sealing component of the motorcycle's fuel system. It covers the fuel tank opening to prevent dust and rainwater from entering the fuel tank, while also preventing fuel evaporation or accidental spillage. The fuel tank cap of a scooter is usually hidden under the seat. First, open the seat (insert the key into the handlebar lock and turn it to the left), and then unscrew the fuel tank cap directly.

[0003] In traditional technology, external threads are set on the outside of the fuel tank opening, while internal threads are set on the inner wall of the fuel tank cap. The two sets of threads are connected to each other to complete the seal between the cap and the fuel tank opening. However, long-term use can easily cause the threads to wear due to vibration, leading to fuel leakage or decreased sealing performance. The lack of an internal secondary sealing mechanism means that fuel can easily seep out from the thread gaps when riding on bumpy roads, posing a safety hazard. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sealing structure for a motorcycle fuel tank cap, which aims to solve the problem that the existing sealing caps that rely solely on threaded connections are prone to thread wear due to vibration after long-term use, leading to fuel leakage or a decrease in sealing performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A motorcycle fuel tank cap sealing structure includes a fuel tank, a fuel tank opening fixedly connected to the top of the fuel tank, an external thread at the bottom of the fuel tank opening, a sealing cap connected to the external thread of the fuel tank opening, an internal thread at the bottom of the sealing cap corresponding to the external thread, a bracket fixedly connected to the top of the sealing cap, a stabilizing frame fixedly connected to the top of the bracket, an auxiliary handle fixedly connected to the left end of the stabilizing frame, a pressing handle rotatably connected to the outside of the stabilizing frame, a connecting rod slidably connected to the middle of the inside of the stabilizing frame, the connecting rod extending into the inside of the fuel tank opening and slidably connected to the fuel tank opening, and a sealing block fixedly connected to the bottom of the connecting rod.

[0007] As a preferred embodiment of this utility model, a support plate is fixedly connected to the bottom end of the bracket, and a first spring is sleeved on the outside of the connecting rod and between the stabilizing frame and the support plate, and a compression plate is fixedly connected to the top of the first spring.

[0008] As a preferred embodiment of this utility model, the connecting rod is slidably connected to the inside of the extrusion plate, the extrusion plate has an inclined structure design, and one end of the pressing handle extends to the top of the extrusion plate.

[0009] As a preferred embodiment of this utility model, the surface of the connecting rod is provided with a toothed groove, a baffle is fixedly connected to the top of the stabilizing frame, a rotating shaft is rotatably connected to the bottom end of the baffle, and a fixing ring is fixedly connected to the outside of the rotating shaft.

[0010] As a preferred embodiment of this utility model, a fixing hook is fixedly connected to the top of the fixing ring, the fixing hook is adapted to the tooth groove, a driven rod is fixedly connected to the end of the rotating shaft away from the fixing hook, and a second spring is fixedly connected between the driven rod and the stabilizing frame.

[0011] As a preferred embodiment of this utility model, multiple sets of rubber rings are fixedly connected to the inner wall of the oil tank opening, and gaps are formed between the multiple sets of rubber rings, which are adapted to the use of the sealing block.

[0012] As a preferred embodiment of this utility model, the outer surface of the sealing cover has multiple sets of anti-slip textures, which are distributed at equal intervals.

[0013] As a preferred embodiment of this utility model, a guide plate is fixedly connected to the top of the fuel tank opening. The guide plate has an inclined structure design. A protrusion is fixedly connected to the outside of the fuel tank opening. A first sealing ring is fixedly connected to the outside of the protrusion.

[0014] As a preferred embodiment of this utility model, a placement groove is provided on the inner side wall of the sealing cover at a position corresponding to the protrusion, and a second sealing ring is fixedly connected inside the placement groove. The first sealing ring and the second sealing ring are designed in an alternating structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, the sealing block is pushed into the gap of the rubber ring at the fuel tank opening by the connecting rod to form an axial pressure seal, which can prevent fuel leakage even if the threads are loose.

[0017] 2. In this utility model, the dustproof and waterproof performance is improved by the interlocking of the protrusions with the first and second sealing rings in the placement groove, making it suitable for rainy days or off-road scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the sealing cap structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the sealing block structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixing hook structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal planar structure of the sealing cap and the oil tank opening of this utility model.

[0023] In the diagram: 1. Fuel tank; 2. Fuel tank opening; 3. Sealing cap; 4. Bracket; 5. Stabilizing frame; 6. Press handle; 7. Connecting rod; 8. Sealing block; 9. Support plate; 10. First spring; 11. Extrusion plate; 12. Gear groove; 13. Baffle; 14. Rotating shaft; 15. Fixing ring; 16. Fixing hook; 17. Driven rod; 18. Second spring; 19. Rubber ring; 20. Guide plate; 21. Protrusion; 22. Placement slot. 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] Example: Please refer to Figures 1-5 This utility model provides a technical solution:

[0026] A motorcycle fuel tank cap sealing structure includes a fuel tank 1, a fuel tank opening 2 fixedly connected to the top of the fuel tank 1, an external thread at the bottom of the fuel tank opening 2, a sealing cap 3 connected to the external thread of the fuel tank opening 2, an internal thread at the bottom of the sealing cap 3 corresponding to the external thread, a bracket 4 fixedly connected to the top of the sealing cap 3, a stabilizing frame 5 fixedly connected to the top of the bracket 4, an auxiliary handle fixedly connected to the left end of the stabilizing frame 5, a pressing handle 6 rotatably connected to the outside of the stabilizing frame 5, a connecting rod 7 slidably connected to the middle of the inside of the stabilizing frame 5, the connecting rod 7 extending into the inside of the fuel tank opening 2 and slidably connected to the fuel tank opening 2, and a sealing cap fixedly connected to the bottom of the connecting rod 7. The sealing block 8 is installed by opening the seat of the scooter and exposing the fuel tank 1. After filling the fuel tank 1 with gasoline, the sealing cap 3 is placed on the outside of the fuel tank opening 2. Then, it is rotated so that the internal and external threads fit together, making the sealing cap 3 fit with the fuel tank opening 2 and sealing the fuel tank opening 2. This prevents the gasoline inside from spilling out when the scooter is bumpy during riding. Then, the connecting rod 7 is slid, and the stabilizing frame 5 limits it, causing it to move axially along a predetermined path. This then pushes the sealing block 8, allowing it to enter the interior of the fuel tank opening 2 and completely seal the inner wall of the fuel tank opening 2.

[0027] Furthermore, in this embodiment, a support plate 9 is fixedly connected to the bottom end of the bracket 4. A first spring 10 is sleeved on the outside of the connecting rod 7 and between the stabilizing frame 5 and the support plate 9. A pressing plate 11 is fixedly connected to the top of the first spring 10. The connecting rod 7 is slidably connected to the inside of the pressing plate 11. The pressing plate 11 has an inclined structure design. One end of the pressing handle 6 extends above the pressing plate 11. The operator places their thumb on the outside of the stabilizing frame 5 and then presses the pressing handle 6 with their other fingers. The pressing handle 6 then moves axially with one end of the bracket 4 as the force point. The end of the pressing handle 6 near the pressing plate 11 will then descend, causing the pressing plate 11 to descend. As the pressing plate 11 descends, it rubs against the connecting rod 7 during its descent, causing the connecting rod 7 to descend. At the same time, the first spring 10 is compressed. Repeated operation achieves the descent of the connecting rod 7.

[0028] Furthermore, in this embodiment, the surface of the connecting rod 7 is provided with a toothed groove 12, the top of the stabilizing frame 5 is fixedly connected to a baffle 13, the bottom end of the baffle 13 is rotatably connected to a rotating shaft 14, the outside of the rotating shaft 14 is fixedly connected to a fixing ring 15, the top of the fixing ring 15 is fixedly connected to a fixing hook 16, the fixing hook 16 is adapted to the toothed groove 12, the end of the rotating shaft 14 away from the fixing hook 16 is fixedly connected to a driven rod 17, and a second spring 18 is fixedly connected between the driven rod 17 and the stabilizing frame 5. By pressing one end of the driven rod 17, the driven rod 17 will squeeze the second spring 18, so that the fixing ring 15 rotates outside the rotating shaft 14, thereby lifting the fixing hook 16 and making it disengage from the toothed groove 12. After the connecting rod 7 moves to a specified height, by releasing the driven rod 17, the extension and retraction of the second spring 18 will enable the fixing hook 16 to enter the interior of the toothed groove 12, thus completing the limiting and fixing of the connecting rod 7.

[0029] Furthermore, in this embodiment, multiple sets of rubber rings 19 are fixedly connected to the inner wall of the fuel tank opening 2, and gaps are formed between the multiple sets of rubber rings 19. The gaps are adapted to the use of the sealing block 8. After the sealing block 8 enters the interior of the fuel tank opening 2, it will be inserted between two sets of rubber rings 19. Then, friction occurs between the sealing block 8 and the rubber rings 19, thereby sealing the fuel tank opening 2.

[0030] Furthermore, in this embodiment, multiple sets of anti-slip textures are provided on the outside of the sealing cover 3. These multiple sets of anti-slip textures are distributed at equal intervals. By designing multiple sets of anti-slip textures on the outside of the sealing cover 3, the friction between the seal and the palm is effectively increased, making it easier to apply force when rotating the sealing cover 3.

[0031] Furthermore, in this embodiment, a guide plate 20 is fixedly connected to the top of the fuel tank opening 2. The guide plate 20 has an inclined structure design. A protrusion 21 is fixedly connected to the outside of the fuel tank opening 2. A first sealing ring is fixedly connected to the outside of the protrusion 21. A placement groove 22 is provided on the inner side wall of the sealing cover 3 at a position corresponding to the protrusion 21. A second sealing ring is fixedly connected inside the placement groove 22. The first sealing ring and the second sealing ring have an interlaced structure design. Through the design of the guide plate 20, it is convenient to inject gasoline. When the sealing cover 3 is fitted onto the outside of the fuel tank opening 2, the protrusion 21 will directly enter the inside of the placement groove 22. At this time, the first sealing ring will be respectively inserted into the gap between the second sealing ring, improving the sealing performance between the outside of the fuel tank opening 2 and the sealing cover 3.

[0032] In this embodiment, the specific implementation scenario is as follows: By opening the seat of the scooter, the fuel tank 1 is exposed. By pressing one end of the driven rod 17, the driven rod 17 compresses the second spring 18, causing the retaining ring 15 to rotate outside the rotating shaft 14, thereby lifting the retaining hook 16 and disengaging it from the toothed groove 12. The sealing cover 3 is then fitted onto the outside of the fuel tank opening 2, and then rotated. The internal and external threads engage, causing the sealing cover 3 to fit snugly against the fuel tank opening 2. The protrusion 21 directly enters the placement groove 22, at which point the first sealing ring is engaged in the gap between the second sealing ring, improving the sealing between the outside of the fuel tank opening 2 and the sealing cover 3. The operator places their thumb on the outside of the stabilizing frame 5 and then presses the other fingers against the pressing handle 6. The pressing handle 6 then moves axially around one end of the bracket 4 as the force point. The end of the pressing handle 6 near the pressing plate 11 then descends, causing the pressing plate 11 to descend. As the pressing plate 11 descends, it rubs against the connecting rod 7. The connecting rod 7 then descends, and the first spring 10 is compressed. Through repeated operation, the connecting rod 7 descends and enters the interior of the oil tank opening 2 through the sealing block 8. It then inserts between the two sets of rubber rings 19, and the sealing block 8 rubs against the rubber rings 19, thus sealing the oil tank opening 2.

[0033] 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 motorcycle fuel tank cap sealing structure, comprising a fuel tank (1), characterized in that: The top of the oil tank (1) is fixedly connected to the oil tank opening (2). The bottom of the oil tank opening (2) is provided with an external thread. The external thread of the oil tank opening (2) is connected to a sealing cap (3). The bottom of the sealing cap (3) is provided with an internal thread at the position corresponding to the external thread. The top of the sealing cap (3) is fixedly connected to a bracket (4). The top of the bracket (4) is fixedly connected to a stabilizing frame (5). The left end of the stabilizing frame (5) is fixedly connected to an auxiliary handle. The outside of the stabilizing frame (5) is rotatably connected to a pressing handle (6). The middle of the inside of the stabilizing frame (5) is slidably connected to a connecting rod (7). The connecting rod (7) extends into the inside of the oil tank opening (2) and is slidably connected to the oil tank opening (2). The bottom of the connecting rod (7) is fixedly connected to a sealing block (8).

2. The motorcycle fuel tank cap sealing structure according to claim 1, characterized in that: The bottom end of the bracket (4) is fixedly connected to a support plate (9), and a first spring (10) is sleeved on the outside of the connecting rod (7) and between the stabilizing frame (5) and the support plate (9). A compression piece (11) is fixedly connected to the top of the first spring (10).

3. The motorcycle fuel tank cap sealing structure according to claim 2, characterized in that: The connecting rod (7) is slidably connected to the inside of the extrusion plate (11), the extrusion plate (11) is designed with an inclined structure, and one end of the pressing handle (6) extends to the top of the extrusion plate (11).

4. The motorcycle fuel tank cap sealing structure according to claim 1, characterized in that: The surface of the connecting rod (7) is provided with a toothed groove (12), the top of the stabilizing frame (5) is fixedly connected with a baffle (13), the bottom end of the baffle (13) is rotatably connected with a rotating shaft (14), and a fixing ring (15) is fixedly connected to the outside of the rotating shaft (14).

5. The motorcycle fuel tank cap sealing structure according to claim 4, characterized in that: The top of the fixed ring (15) is fixedly connected to a fixed hook (16), which is adapted to the tooth groove (12). The end of the rotating shaft (14) away from the fixed hook (16) is fixedly connected to a driven rod (17), and a second spring (18) is fixedly connected between the driven rod (17) and the stabilizing frame (5).

6. The motorcycle fuel tank cap sealing structure according to claim 1, characterized in that: Multiple sets of rubber rings (19) are fixedly connected to the inner wall of the oil tank opening (2), and gaps are formed between the multiple sets of rubber rings (19). The gaps are adapted to the use of the sealing block (8).

7. The motorcycle fuel tank cap sealing structure according to claim 1, characterized in that: The sealing cover (3) has multiple sets of anti-slip patterns on its exterior, and the multiple sets of anti-slip patterns are distributed at equal intervals.

8. The motorcycle fuel tank cap sealing structure according to claim 1, characterized in that: A guide plate (20) is fixedly connected to the top of the oil tank opening (2). The guide plate (20) has an inclined structure design. A protrusion (21) is fixedly connected to the outside of the oil tank opening (2). A first sealing ring is fixedly connected to the outside of the protrusion (21).

9. A motorcycle fuel tank cap sealing structure according to claim 8, characterized in that: A placement groove (22) is provided on the inner side wall of the sealing cover (3) at a position corresponding to the protrusion (21). A second sealing ring is fixedly connected inside the placement groove (22). The first sealing ring and the second sealing ring are designed in an interlaced structure.

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