External breather pipe structure of oil tank

Abstract

The utility model relates to the technical field of motorcycle parts, in particular to an external breather pipe structure of an oil tank, which comprises an oil tank body and a breather pipe, the upper end of the oil tank body is connected with an oil tank lock mounting seat, and the oil tank lock mounting seat is provided with an oil filler which is communicated with the inside of the oil tank body; the breather pipe is connected with the interior of the oil tank body. The breather pipe is connected to the outside of the oil tank body, the inner structure of the oil tank body can be simplified, the possibility that defects are generated in the process aspect during forming of the oil tank body is reduced, the production efficiency is improved, the breather pipe can be conveniently and directly cleaned from the outer side, and the service life of the oil tank and the breather pipe is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of motorcycle components, and particularly to an external fuel tank vent pipe structure. Background Art

[0002] The motorcycle fuel tank is the place to store gasoline on a motorcycle and is an important component of the motorcycle, which not only affects the safety of the motorcycle but also directly impacts the appearance of the motorcycle.

[0003] The main function of the vent pipe is to ensure that the inside of the fuel tank is connected to the outside atmosphere, thereby maintaining the air pressure balance inside and outside the fuel tank. During the operation of the motorcycle, due to the consumption of fuel, a certain negative pressure will be formed inside the fuel tank. The existence of the vent hole allows outside air to enter the fuel tank to supplement this negative pressure, ensuring that the fuel can be smoothly supplied to the engine.

[0004] In the existing motorcycle fuel tank vent pipes, most are located inside the fuel tank, making the fuel tank forming process relatively complex. During use, there is a problem of blockage of the vent pipe, and it is difficult to repair or replace the vent pipe inside the fuel tank. Utility Model Content

[0005] In order to simplify the internal structure of the fuel tank, improve production efficiency, and facilitate the repair and replacement of the vent pipe, this application provides an external fuel tank vent pipe structure.

[0006] The external fuel tank vent pipe structure provided by this application adopts the following technical solutions:

[0007] An external fuel tank vent pipe structure includes a fuel tank body and a vent pipe. A fuel tank lock mounting seat is connected to the upper end of the fuel tank body. The fuel tank lock mounting seat is provided with a fuel filling port, and the fuel filling port is connected to the inside of the fuel tank body. One end of the vent pipe is connected to the fuel tank lock mounting seat, and the vent pipe is connected to the inside of the fuel tank body.

[0008] By adopting the above technical solutions, the vent pipe is connected to the outside of the fuel tank body, which helps to simplify the internal structure of the fuel tank body, reduce the possibility of defects in the forming process of the fuel tank body, improve production efficiency, and facilitate direct cleaning of the vent pipe from the outside, thereby increasing the service life of the fuel tank and the vent pipe.

[0009] Preferably, it further includes a fuel blocking valve and a fuel evaporation vent pipe. The fuel blocking valve is connected to the fuel tank body. One end of the fuel evaporation vent pipe is connected to the end of the vent pipe far from the fuel tank lock mounting seat, and the other end of the fuel evaporation vent pipe is connected to the fuel blocking valve. The fuel evaporation vent pipe is connected to the inlet of the fuel blocking valve.

[0010] By adopting the above technical solution, a fuel blocking valve is provided. The fuel evaporation vent pipe connects the vent pipe and the fuel blocking valve. The fuel blocking valve is used to block the vent pipe. After the oil and gas reach a certain amount, the fuel blocking valve is connected to discharge the oil and gas, so as to keep the pressure in the fuel tank body constant and improve the service life of the fuel tank body.

[0011] Preferably, it further includes an adsorption pipe. One end of the adsorption pipe is connected to the fuel blocking valve, and the adsorption pipe is communicated with the outlet of the fuel blocking valve.

[0012] By adopting the above technical solution, the oil and gas transported from the fuel evaporation vent pipe to the fuel blocking valve by the adsorption pipe are transported to a designated area, which is convenient for treating the oil and gas and reducing the impact of the oil and gas on the environment.

[0013] Preferably, it further includes a fuel blocking valve bracket. The fuel blocking valve bracket is connected to the fuel tank body, and the fuel blocking valve is connected to the fuel blocking valve bracket.

[0014] By adopting the above technical solution, a fuel blocking valve bracket is provided to realize the connection between the fuel blocking valve and the fuel tank body, which is convenient for the installation and disassembly of the fuel blocking valve.

[0015] Preferably, the fuel tank body is provided with a groove, and the fuel blocking valve bracket is installed in the groove.

[0016] By adopting the above technical solution, a groove is provided. One end area of the fuel blocking valve bracket is in the groove, which improves the connection stability between the fuel blocking valve bracket and the fuel tank body, and further improves the connection stability between the fuel blocking valve and the fuel tank body, and improves the reliability of the fuel tank.

[0017] Preferably, a fillet is provided on the outer periphery of the end of the vent pipe away from the fuel tank body, and the fillet is used for the inner wall of the fuel evaporation vent pipe to abut against.

[0018] By adopting the above technical solution, a fillet is provided. The fillet is used for the inner wall of the fuel evaporation vent pipe to abut against, which plays a guiding role for the fuel evaporation vent pipe and is convenient for sleeving the fuel evaporation vent pipe on the outer periphery of the vent pipe, improving the convenience of connection between the fuel evaporation vent pipe and the vent pipe.

[0019] Preferably, the fuel tank body is provided with a connection hole, and the connection hole is used for a bolt to pass through and be threadedly connected to the vehicle frame.

[0020] By adopting the above technical solution, a connection hole is provided. The bolt passes through the connection hole and is threadedly connected to the vehicle frame, realizing the relative fixation of the fuel tank body and the vehicle frame, reducing the possibility of the fuel tank body falling during driving, and improving the safety of the fuel tank body.

[0021] Preferably, a plurality of positioning grooves are provided on the outer periphery of the fuel tank body, and the positioning grooves are used for external positioning blocks to be embedded.

[0022] By adopting the above technical solution, a positioning groove is provided to improve the installation accuracy of the fuel tank body, which helps the connection holes to correspond to the external fixing holes, facilitates the subsequent relative fixation of the fuel tank body and the vehicle frame, helps reduce the stress concentration phenomenon at the connection holes, reduces the possibility of damage at the connection holes, and improves the service life of the fuel tank body.

[0023] Preferably, a plurality of abutting columns are connected to the outer periphery of the fuel tank body, and the abutting columns are used to abut against external components.

[0024] By adopting the above technical solution, the external components are abutted by the abutting columns, which improves the structural strength of the abutting part between the fuel tank body and the external components, helps absorb the external impact received by the fuel tank body, reduces the possibility of damage to the fuel tank body, and improves the service life of the fuel tank body.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The breather pipe is connected to the outside of the fuel tank body, which helps simplify the internal structure of the fuel tank body, reduces the possibility of defects in the manufacturing process when the fuel tank body is formed, improves production efficiency, and facilitates direct cleaning of the breather pipe from the outside, thus improving the service life of the fuel tank and the breather pipe;

[0027] 2. A fuel blocking valve is provided, the fuel evaporation breather pipe connects the breather pipe and the fuel blocking valve, and the fuel blocking valve is used to block the breather pipe. After the oil and gas reach a certain amount, the fuel blocking valve is connected to discharge the oil and gas, so as to keep the pressure in the fuel tank body constant and improve the service life of the fuel tank body;

[0028] 3. The oil and gas transported from the fuel evaporation breather pipe to the fuel blocking valve through the adsorption pipe are transported to a designated area, which facilitates the treatment of the oil and gas and reduces the impact of the oil and gas on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the external breather pipe structure of the fuel tank.

[0030] Figure 2 is a schematic partial structure diagram of the fuel tank body.

[0031] Figure 3 is Figure 1 an enlarged view of part A in

[0032] Description of the reference numerals:

[0033] 1. Fuel tank body; 11. Groove; 12. Connection hole; 121. First connection hole; 122. Second connection hole; 13. Positioning groove; 14. Abutting column; 15. Avoidance groove; 16. Fuel filling port; 17. Fuel tank lock mounting seat; 18. Lug

[0034] 2. Vent pipe; 21. Rounded corner;

[0035] 3. Fuel vapor vent pipe;

[0036] 4. Fuel blocking valve;

[0037] 5. Adsorption pipe;

[0038] 6. Fuel blocking valve bracket; 61. Fixing part; 611. Mounting hole; 62. Connecting part; 63. Mounting part; 631. Mounting groove. Detailed implementation mode

[0039] The following further describes the present application in detail with reference to the accompanying drawings.

[0040] Refer to Figure 1 , an external fuel tank vent pipe structure disclosed in an embodiment of the present application includes a fuel tank body 1. A relief groove 15 is provided on one side of the fuel tank body 1 along the length direction of the fuel tank body 1. A fuel tank lock mounting seat 17 is fixedly connected to the upper end of the fuel tank body 1. The fuel tank lock mounting seat 17 is located on the side of the fuel tank body 1 close to the relief groove 15. The fuel tank lock mounting seat 17 is provided with a fuel filling port 16, and the fuel filling port 16 is communicated with the inside of the fuel tank body 1.

[0041] Refer to Figure 1 And Figure 2 , an external fuel tank vent pipe structure further includes a vent pipe 2. One end of the vent pipe 2 is fixedly connected to the outer periphery of the fuel tank lock mounting seat 17, and the vent pipe 2 is communicated with the inside of the fuel tank body 1. The axial direction of the vent pipe 2 is inclined with respect to the width direction of the fuel tank body 1.

[0042] Refer to Figure 1 And Figure 3 , an external fuel tank vent pipe structure further includes a fuel blocking valve 4 and a fuel blocking valve bracket 6. A groove 11 is provided at the upper end of the fuel tank body 1. The groove 11 is located on the side of the fuel tank body 1 close to the relief groove 15, and the groove 11 is communicated with the relief groove 15. The fuel blocking valve bracket 6 includes a fixing part 61, a connecting part 62 and a mounting plate. The fixing part 61 is embedded in the groove 11, the fixing part 61 is in contact with the bottom of the groove 11, and the fixing part 61 is provided with mounting holes 611 for bolts to pass through and be threadedly connected to the fuel tank body 1. In this embodiment, there are two fixing holes. The lower end of the connecting part 62 is fixedly connected to one end of the fixing part 61 close to the relief groove 15, and one end of the mounting part 63 is fixedly connected to the upper end of the connecting part 62. The end of the mounting part 63 away from the connecting part 62 extends into the relief groove 15. A mounting groove 631 is provided on the side of the mounting part 63 away from the connecting part 62, and the fuel blocking valve 4 is embedded in the mounting groove 631.

[0043] Refer to Figure 1 AndFigure 2 An external fuel tank vent pipe structure further includes a fuel evaporation vent pipe 3 and an adsorption pipe 5. One end of the fuel evaporation vent pipe 3 is fixedly connected to the end of the vent pipe 2 away from the fuel tank body 1. A fillet 21 is provided on the outer periphery of the end of the vent pipe 2 away from the fuel tank body 1, and the fillet 21 is used for the inner wall of the fuel evaporation vent pipe 3 to abut against.

[0044] Referring to Figure 1 and Figure 3 As shown in, the other end of the fuel evaporation vent pipe 3 is fixedly connected to the fuel cut-off valve 4, and the fuel evaporation vent pipe 3 is communicated with the inlet of the fuel cut-off valve 4. One end of the adsorption pipe 5 is fixedly connected to the fuel cut-off valve 4, and the adsorption pipe 5 is communicated with the outlet of the fuel cut-off valve 4. In this embodiment, the fuel evaporation vent pipe 3 and the adsorption pipe 5 are flexible hoses.

[0045] Referring to Figure 1 As shown in, a plurality of abutting columns 14 are fixedly connected to the outer wall of the fuel tank body 1. The abutting columns 14 are divided into two groups, and the two groups of abutting columns 14 are symmetrically distributed along the width direction of the fuel tank body 1. In this embodiment, there are six abutting columns 14. The connection part between the abutting column 14 and the fuel tank body 1 is in arc transition.

[0046] On the side of the fuel tank body 1 away from the avoidance groove 15, two lugs 18 are fixedly connected. The two lugs 18 are symmetrically distributed along the width direction of the fuel tank body 1. The fuel tank body 1 is provided with a connection hole 12, and the connection hole 12 penetrates through the fuel tank body 1. The connection hole 12 is used for a bolt to pass through and be threadedly connected to the vehicle frame. The connection hole 12 includes a first connection hole 121 and a second connection hole 122. The first connection hole 121 is located at the lug 18, and the second connection hole 122 is located at the lower end of the fuel tank body 1. The axes of the first connection hole 121 and the second connection hole 122 are parallel to the width direction of the fuel tank body 1.

[0047] A plurality of positioning grooves 13 are provided at the upper end of the fuel tank body 1, and the positioning grooves 13 are used for external positioning blocks to be embedded.

[0048] The implementation principle of the external fuel tank vent pipe structure in the embodiment of the present application is as follows: The vent pipe 2 is located outside the fuel tank body 1, which helps to simplify the internal structure of the fuel tank body 1 and is convenient for the maintenance and replacement of the vent pipe 2, the fuel evaporation vent pipe 3, the fuel cut-off valve 4 and the adsorption pipe 5.

[0049] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An external fuel tank vent pipe structure, characterized in that: It includes a fuel tank body (1) and a breather pipe (2); a fuel tank lock mounting seat (17) is connected to the upper end of the fuel tank body (1); a fuel filling port (16) is provided on the fuel tank lock mounting seat (17); the fuel filling port (16) is in communication with the interior of the fuel tank body (1); one end of the breather pipe (2) is connected to the fuel tank lock mounting seat (17); the breather pipe (2) is in communication with the interior of the fuel tank body (1).

2. The external fuel tank vent pipe structure according to claim 1, wherein: It further includes a fuel blocking valve (4) and a fuel evaporation breather pipe (3); the fuel blocking valve (4) is connected to the fuel tank body (1); one end of the fuel evaporation breather pipe (3) is connected to the end of the breather pipe (2) away from the fuel tank lock mounting seat (17); the other end of the fuel evaporation breather pipe (3) is connected to the fuel blocking valve (4); the fuel evaporation breather pipe (3) is in communication with the inlet of the fuel blocking valve (4).

3. The fuel tank external vent pipe structure according to claim 2, characterized in that: It further includes an adsorption pipe (5); one end of the adsorption pipe (5) is connected to the fuel blocking valve (4); the adsorption pipe (5) is in communication with the outlet of the fuel blocking valve (4).

4. The fuel tank external ventilation pipe structure according to claim 2, characterized in that: It further includes a fuel blocking valve bracket (6); the fuel blocking valve bracket (6) is connected to the fuel tank body (1); the fuel blocking valve (4) is connected to the fuel blocking valve bracket (6).

5. The fuel tank external ventilation pipe structure according to claim 4, characterized in that: The fuel tank body (1) is provided with a groove (11); the fuel blocking valve bracket (6) is installed in the groove (11).

6. The fuel tank external vent pipe structure according to claim 2, characterized in that: The outer periphery of the end of the breather pipe (2) away from the fuel tank body (1) is provided with a fillet (21); the fillet (21) is for the inner wall of the fuel evaporation breather pipe (3) to abut against.

7. The external fuel tank vent pipe structure according to claim 1, characterized in that: The fuel tank body (1) is provided with a connection hole (12); the connection hole (12) is for a bolt to pass through and be threadedly connected to the vehicle frame.

8. The external fuel tank vent pipe structure according to claim 7, characterized in that: A number of positioning grooves (13) are provided on the outer periphery of the fuel tank body (1); the positioning grooves (13) are for external positioning blocks to be embedded in.

9. The fuel tank external ventilation pipe structure according to claim 1, characterized in that: A number of abutting columns (14) are connected to the outer periphery of the fuel tank body (1); the abutting columns (14) are for abutting against external components.

Images