一种燃油箱加油口防泄漏机构
By designing an automatic switching mechanism for the rotating component and sealing plate of the fuel tank filler neck, the problem of fuel and gas leakage during refueling was solved, achieving sealing and safety during the refueling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 宁波春华汽配有限公司
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing fuel tank filler neck structure, if the filler cap is not properly closed or not sealed during the refueling process, fuel vapors are prone to leakage.
A leak-proof mechanism was designed, comprising a refueling pipe, a connecting frame, a support frame, a filter frame, a sealing plate, and a rotating assembly. The automatic switching between refueling and sealing is achieved by rotating the sealing plate. The meshing transmission of the serrated block and serrated ring, combined with the elastic characteristics of the spring, achieves sealing and leakage prevention during the refueling process.
It effectively prevents fuel vapor leakage during refueling, ensuring the fuel tank's sealing and safety, and avoiding fuel vapor leakage.
Smart Images
Figure CN224510877U_ABST
Abstract
Claims
1. A fuel tank filler anti-leak mechanism comprising a filler pipe (101), characterized in that: The lower end of the refueling pipe (101) is fixedly connected to a connecting frame (102), the lower end of the connecting frame (102) is fixedly connected to a support frame (103), the lower end of the support frame (103) is fixedly connected to a filter frame (104), multiple ends of the filter frame (104) are provided with filter holes (105), four support shafts (106) are fixedly connected to the inner side of the upper end of the filter frame (104), a rotating sleeve (107) is rotatably connected to the outer side of the support shaft (106), a sealing plate (108) is fixedly connected to the outer side of the rotating sleeve (107), and a rotating assembly is provided between the refueling pipe (101) and the support frame (103).
2. A fuel tank filler anti-leak mechanism according to claim 1, characterized in that: The rotating assembly includes a lifting plate (201), a serrated block (202), and a serrated ring (203). Four lifting plates (201) are slidably connected to the inner side of the connecting frame (102). A serrated block (202) is fixedly connected to one end of the lifting plate (201) near the sealing plate (108). A serrated ring (203) is fixedly connected to the outer side of the rotating sleeve (107). The serrated ring (203) is engaged with the serrated block (202).
3. A fuel tank filler anti-leak mechanism according to claim 2, wherein: The rotating assembly also includes a connecting plate (301) and a connecting block (302). The connecting plate (301) is slidably connected to the inner side of the connecting frame (102). The four lifting plates (201) are respectively provided with connecting blocks (302) between them and the connecting plates (301). The two ends of the connecting blocks (302) are fixedly connected to the lifting plates (201) and the connecting plates (301) respectively.
4. A fuel tank filler anti-leak mechanism according to claim 3, wherein: The rotating assembly also includes a squeezing block (401) and a connecting block (402). The inner side of the oil filling pipe (101) is slidably connected to the connecting block (402). The lower end of the connecting block (402) is fixedly connected to the squeezing block (401). The lower end of the squeezing block (401) is fixedly connected to the connecting plate (301).
5. A fuel tank filler anti-leak mechanism according to claim 3, wherein: The rotating assembly also includes a support plate (501) and a spring (502). The support plate (501) is fixedly connected to the inner side of the lower end of the support frame (103). Multiple sets of springs (502) are arranged between the support plate (501) and the connecting plate (301). The two ends of the springs (502) are fixedly connected to the connecting plate (301) and the support plate (501) respectively.
6. A fuel tank filler anti-leak mechanism according to claim 4, wherein: The inner sides of the extrusion block (401) and the connecting block (402) are provided with inlets (601).
7. A fuel tank filler anti-leak mechanism according to claim 1, wherein: A guide ring (701) is fixedly connected to the inner side of the upper end of the refueling pipe (101).
8. A fuel tank filler anti-leak mechanism according to claim 1, wherein: A sealing cap (801) is threaded onto the outer side of the upper end of the refueling pipe (101).