阅读说明：本技术 一种燃油导流组件 (Fuel oil flow guide assembly ) 是由 马晨光 洪承镇 于坤 胡锦文 张宸睿 蔡新宇 苏文涛 李圣明 张玉国 于 2021-03-10 设计创作，主要内容包括：本申请公开一种燃油导流组件,其中所述燃油导流组件包括一导液主体和一密封组件,其中所述导液主体的一端形成一插接口,供一油枪插入,所述导液主体的另一端形成一连通口,供连通一车辆上的燃油箱,所述导液主体在所述连通口和所述插接口之间形成一导通通道,其中所述密封组件包括一第一密封单元,其中所述第一密封单元包括一第一密封片和一第一转动构件,其中所述第一密封片通过所述第一转动构件被可转离且可复位地密封于所述插接口,以在所述油枪从所述插接口插入所述导通通道时,所述第一密封片被抵压而转动,进而允许所述油枪插入所述导通通道中,且在所述油枪从所述插接口拔离后,所述第一密封片能够复位,进而密封所述插接口。(The application discloses a fuel oil diversion assembly, wherein the fuel oil diversion assembly comprises a liquid guiding main body and a sealing assembly, wherein one end of the liquid guiding main body forms a plug port for an oil gun to be inserted, the other end of the liquid guiding main body forms a communication port for communicating a fuel tank on a vehicle, the liquid guiding main body is arranged between the communication port and the plug port to form a communication channel, the sealing assembly comprises a first sealing unit, the first sealing unit comprises a first sealing sheet and a first rotating member, the first sealing sheet can be rotated and sealed in the plug port in a resettable manner through the first rotating member, so that when the oil gun is inserted into the communication channel from the plug port, the first sealing sheet is pressed to rotate, and then the oil gun is allowed to be inserted into the communication channel, and after the oil gun is pulled out from the plug port, the first sealing piece can reset, and then the interface is sealed.)

1. A fuel baffle assembly for installation in a fuel tank of a vehicle for directing fuel supplied by a fuel gun to said fuel tank, wherein said fuel baffle assembly comprises:

the liquid guiding device comprises a liquid guiding main body, a liquid guiding main body and a liquid guiding device, wherein one end of the liquid guiding main body is provided with a plug port for an oil gun to insert, the other end of the liquid guiding main body is provided with a communicating port for communicating with a fuel tank of the vehicle, and the liquid guiding main body forms a communicating channel between the communicating port and the plug port;

a sealing assembly, wherein the sealing assembly comprises a first sealing unit, wherein the first sealing unit comprises a first sealing sheet and a first rotating member, wherein the first sealing sheet is rotatably sealed in the conducting channel by the first rotating member in a pressurized manner, so that when the oil gun is inserted into the conducting channel from the insertion port, the first sealing sheet is pressed to rotate, thereby allowing the oil gun to be inserted into the conducting channel, and after the oil gun is pulled out from the insertion port, the first sealing sheet can be reset, thereby sealing the conducting channel;

and the guide pipe is provided with a main pipe channel, wherein two ends of the guide pipe are respectively detachably and hermetically butted with the communication port and the oil inlet of the fuel tank, so that the main pipe channel is communicated with the communication channel and the fuel tank.

2. The fuel assembly of claim 1, wherein the first rotating member includes a first shaft and a first torsion spring, the first torsion spring being sleeved on the first shaft, the first shaft being rotatably mounted to the fluid-conducting body.

3. The fuel guide assembly according to claim 2, wherein the fluid-guiding body includes a plug body and a fluid-guiding body, the plug body is butted against the fluid-guiding body to form the communication passage, the plug body has an inner wall, an outer wall and an annular rim, the same ends of the inner wall and the outer wall are disposed at intervals on the annular rim, and a spacing chamber is formed between the inner wall and the outer wall, the middle portion of the annular rim forms the plug port, the inner wall forms a cavity, the cavity is in communication with the plug port, the fuel guide assembly includes a plurality of sealing rings, the fluid-guiding body is inserted into the spacing chamber, at least one sealing ring is sleeved between the inner wall and the inner side of the fluid-guiding body, wherein the plug body forms the communication port and a fluid-guiding chamber in communication with the communication port and the cavity, wherein the drainage cavity and the cavity form the conduction channel.

4. A fuel assembly according to claim 3, wherein at least one sealing ring is interposed between the outer wall and the outside of the fluid-conducting body.

5. A fuel assembly according to claim 3 or claim 4, wherein the fluid conducting body is removably connected to the plug body.

6. A fuel assembly according to claim 5, wherein the sealing assembly comprises a second sealing unit, wherein the second sealing unit comprises a second sealing disc and a second rotating member, wherein the second sealing disc is rotatably and repositionably sealed to the drainage chamber by the second rotating member.

7. The fuel assembly of claim 6, wherein the seal assembly comprises a second seal unit, wherein the second seal unit comprises a second sealing disc and a second rotating member, wherein the second sealing disc is rotatably and repositionably sealed to the drainage cavity by the second rotating member.

8. The fuel assembly of claim 7, wherein the second rotating member includes a second shaft and a second torsion spring, the second torsion spring is sleeved on the second shaft, the second shaft is rotatably mounted on the fluid-guiding body, and the second sealing plate is pressed by the second torsion spring to tend to seal the fluid-guiding chamber.

9. A fuel guide assembly according to claim 3, characterized in that the plug body and/or the liquid guiding body are embodied in a plastic material.

10. The fuel assembly of claim 1, further comprising a manifold and a return tube, wherein the return tube defines a return channel, and wherein the manifold is disposed on an outer wall of the fluid-conducting body and is in communication with the flow-conducting channel and the return channel.

Technical Field

The invention relates to a fitting for a vehicle, in particular to a fuel flow guide assembly.

Background

With the continuous improvement of the environmental protection requirement, the existing vehicles are designed towards the environmental protection direction during the design. The existing vehicle needs to consume a preset amount of fuel during use, and a preset amount of fuel needs to be filled into a fuel tank on the vehicle when the fuel amount is lower than the preset value.

The existing vehicles need to be refueled to a refueling station, a refueling gun of the refueling station is inserted from a fuel tank inlet of the vehicle during refueling, a great amount of fuel vapor is generated along with continuous introduction of the fuel into a fuel tank on the vehicle, and the fuel vapor is easy to leak during refueling. Further, after the filler gun is inserted into the fuel tank, it is necessary to seal the gap between the filler gun and the fuel tank in order to prevent organic matter carried in the fuel vapor from directly evaporating into the air. However, when the gun is removed, there is a short communication between the tank and the atmosphere, which results in contamination of the air with organic compounds mixed in the oil vapor. In addition, when the oil gun is inserted into a fuel tank on a vehicle, the central line of a pipeline of the oil gun needs to be coaxial with a guide pipe which is arranged on the vehicle and is communicated with the fuel tank, otherwise, oil in the oil gun collides with the inner wall of the guide pipe to cause the oil in the fuel tank to shake, and therefore when the fuel tank is not full, the oil which shakes touches a sensor causes the gun to jump ahead.

In addition, most parts of the liquid guiding structure of the existing fuel tank on the vehicle are of metal structures, and the liquid guiding structure made of metal materials is heavy as a whole, so that the oil consumption of the vehicle can be increased indirectly, and the concept of energy conservation and environmental protection advocated by the state is violated. On the other hand, the liquid guiding structure made of metal is not easy to seal with the cover made of plastic, so that a plastic part is usually embedded in the liquid guiding structure made of metal, such as a liquid guiding tube made of metal, for sealing and abutting against the plastic cover. Therefore, the weight of the whole vehicle cannot be reduced, and the replacement and maintenance of the liquid guide structure become very complicated. Especially, when any one of the metal pipe body and the plastic butt joint is damaged, the whole body has to be disassembled.

Disclosure of Invention

One advantage of the present invention is to provide a fuel assembly including a plurality of removable components that allow for easier replacement of the fuel assembly and easier refueling for vehicle owners.

Another advantage of the present invention is to provide a fuel assembly wherein the overall weight of the fuel assembly is lighter than prior art drain assemblies, thereby making the vehicle in which the fuel assembly is installed more fuel efficient.

Another advantage of the present invention is to provide a fuel nozzle assembly, wherein after the fuel nozzle assembly is mounted on a vehicle and is abutted against a fuel tank of the vehicle, if a fuel nozzle is inserted into a communication channel formed by the fuel nozzle assembly, the fuel nozzle can automatically communicate with the fuel tank through the communication channel of the fuel nozzle assembly, so as to complete refueling, and after the fuel nozzle is removed, the fuel nozzle assembly can automatically block the communication channel, so as to prevent the communication between the fuel tank and the outside, and further prevent fuel vapor from escaping into the air during refueling or complete refueling.

Another advantage of the present invention is to provide a fuel guide assembly that prevents oil vapor from escaping from a fuel tank after a fuel gun trips, thereby preventing air pollution.

Another advantage of the present invention is to provide a fuel guide assembly capable of maintaining a center line of a pipe of an inserted fuel gun at a position coaxial with a guide pipe in a fuel tank, thereby preventing oil in the fuel gun from colliding with an inner wall of the guide pipe to cause sloshing of the oil in the fuel tank.

Another advantage of the present invention is to provide a fuel guide assembly that can guide oil introduced into the fuel tank to rise in a vertical direction without rising and falling.

Another advantage of the present invention is to provide a fuel guide assembly, wherein the fuel guide assembly can seal the path of oil vapor diffusing into the air by means of double sealing when the oil gun is removed, thereby preventing organic matters in the oil vapor from polluting the air.

To achieve at least one of the above objects, the present invention provides a fuel guide assembly for being mounted to a fuel tank of a vehicle to guide fuel filled from a fuel gun to the fuel tank, wherein the fuel guide assembly includes:

the liquid guiding device comprises a liquid guiding main body, a liquid guiding main body and a liquid guiding device, wherein one end of the liquid guiding main body is provided with a plug port for an oil gun to insert, the other end of the liquid guiding main body is provided with a communicating port for communicating with a fuel tank of the vehicle, and the liquid guiding main body forms a communicating channel between the communicating port and the plug port;

a sealing assembly, wherein the sealing assembly comprises a first sealing unit, wherein the first sealing unit comprises a first sealing sheet and a first rotating member, wherein the first sealing sheet is rotatably sealed in the conducting channel by the first rotating member in a pressurized manner, so that when the oil gun is inserted into the conducting channel from the insertion port, the first sealing sheet is pressed to rotate, thereby allowing the oil gun to be inserted into the conducting channel, and after the oil gun is pulled out from the insertion port, the first sealing sheet can be reset, thereby sealing the conducting channel;

and the guide pipe is provided with a main pipe channel, wherein two ends of the guide pipe are respectively detachably and hermetically butted with the communication port and the oil inlet of the fuel tank, so that the main pipe channel is communicated with the communication channel and the fuel tank.

According to an embodiment of the present invention, the first rotating member includes a first shaft and a first torsion spring, the first torsion spring is sleeved on the first shaft, and the first shaft is rotatably mounted on the liquid guiding main body.

According to an embodiment of the present invention, the liquid guiding main body includes a plug-in body and a liquid guiding body, the plug-in body is butt-jointed to the liquid guiding body to form the conducting channel, the plug-in body has an inner wall, an outer wall and an annular edge, the same end of the inner wall and the outer wall is disposed at the annular edge at intervals, a spacing cavity is formed between the inner wall and the outer wall, the middle part of the annular edge forms the plug-in port, the inner wall forms a cavity, the cavity is communicated with the plug-in port, the fuel guiding assembly includes a plurality of sealing rings, the liquid guiding body is inserted into the spacing cavity, at least one sealing ring is sleeved between the inner wall and the inner side of the liquid guiding body, wherein the plug-in body forms the communicating port and a liquid guiding cavity communicated with the communicating port and the cavity, wherein the drainage cavity and the cavity form the conduction channel.

According to an embodiment of the invention, at least one sealing ring is sleeved between the outer wall and the outer side of the liquid guiding body.

According to an embodiment of the present invention, the liquid guiding body is detachably connected to the insertion body.

According to an embodiment of the present invention, the outer wall of the insertion body is provided with at least one pair of locking windows, and the outer wall of the liquid guiding body is provided with at least one pair of locking protrusions, wherein each locking protrusion is locked into a corresponding locking window, so that the liquid guiding body is connected with the insertion body in a locking manner.

According to an embodiment of the present invention, the sealing assembly comprises a second sealing unit, wherein the second sealing unit comprises a second sealing sheet and a second rotating member, wherein the second sealing sheet is rotatably and repositionably sealed to the drainage chamber by the second rotating member.

According to an embodiment of the present invention, the sealing assembly comprises a second sealing unit, wherein the second sealing unit comprises a second sealing sheet and a second rotating member, wherein the second sealing sheet is rotatably and repositionably sealed to the drainage chamber by the second rotating member.

According to an embodiment of the present invention, the second rotating member includes a second shaft body, and a second torsion spring, the second torsion spring is sleeved on the second shaft body, the second shaft body is rotatably installed on the liquid guiding body, and the second sealing sheet is pressed by the second torsion spring and tends to seal the liquid guiding cavity.

According to an embodiment of the present invention, the fuel guide assembly includes a branch pipe, wherein the branch pipe is communicated with the communication passage.

Further objects and advantages of the invention will be fully apparent from the ensuing description.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

Fig. 1 is a perspective view showing a partial structure of a fuel guide assembly according to the present invention.

Fig. 2 is a schematic view showing a partial structure of the fuel guide assembly of the present invention cut in one direction.

Fig. 3 is a front view showing one direction of the structure of a part of the fuel guide assembly according to the present invention.

Fig. 4 is a sectional view showing one direction of the structure of a part of the fuel guide assembly according to the present invention.

Fig. 5 shows an exploded view of a portion of the fuel assembly of the present invention.

Fig. 6 is a schematic view showing an angle of the socket body in the partial structure of the fuel guide assembly according to the present invention.

Fig. 7 is a schematic view showing an angle of the upper cylinder in the fluid-guiding body in the partial structure of the fuel guide assembly according to the present invention.

Fig. 8 is a perspective view showing a partial structure of the fuel guide assembly according to the present invention.

Fig. 9 is an exploded view showing a partial structure of the fuel guide assembly of the present invention.

Detailed Description

The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

A fuel deflector assembly 100 according to a preferred embodiment of the present invention, which includes a fluid-conducting body 10 and a sealing assembly 20, will be described in detail below with reference to fig. 1 to 9 of the drawings.

One end of the liquid guiding main body 10 forms a socket 101 for an oil gun to insert. The other end of the liquid guiding body 10 forms a communication port 102 for communicating with a fuel tank on the vehicle. The liquid guiding body 10 forms a communication channel 103 between the communication port 102 and the insertion port 101. When the fuel guide assembly 100 is installed in a vehicle and the communication port 102 is communicated with a fuel tank of the vehicle, the fuel gun inserted into the insertion port 101 can discharge fuel to the communication channel 103, and the fuel flows into the fuel tank of the vehicle from the communication port 102 through the communication channel 103.

The sealing assembly 20 includes a first sealing unit 21, wherein the first sealing unit 21 includes a first sealing sheet 211 and a first rotating member 212, wherein the first sealing sheet 211 is pressure-rotatably sealed to the conducting passage 103 through the first rotating member 212, so that when the oil gun is inserted into the conducting passage 103 from the insertion port 101, the first sealing sheet 211 is pressed to rotate, thereby allowing the oil gun to extend into the conducting passage 103, and after the oil gun is pulled out from the insertion port 101, the first sealing sheet 211 can be reset, thereby sealing the conducting passage 103. That is, the first rotating member 212 can automatically open and seal the conduction passage 103 by inserting and extracting the oil gun, to prevent oil vapor from overflowing from the plug 101. Preferably, the first sealing sheet 211 is pressure-rotatably sealed to the socket 101 by the first rotating member 212.

Since the conduction path 103 is automatically sealed by the first sealing sheet 211 when the oil gun is pulled out from the socket 101, oil vapor formed by fuel introduced into the fuel tank of the vehicle from the conduction path 103 does not escape from the socket 101. Thus, the insertion port 101 of the drainage body 10 can be automatically isolated from the outside without an additional cover.

Specifically, the first rotating member 212 includes a first shaft body 2121 and a first torsion spring 2122. The first torsion spring 2122 is fitted around the first shaft 2121. The first shaft 2121 is rotatably mounted to the liquid guiding main body 10. The first sealing sheet 211 is pressed by the first torsion spring 2122 and tends to seal the socket 101. Therefore, when the oil gun is not inserted into the socket 101, the first sealing piece 211 is pressed by the first torsion spring 2122 to seal the conducting passage 103, and when the oil gun is inserted into the conducting passage 103 from the socket 101, the first sealing piece 211 is pressed to drive the torsion spring to synchronously rotate around the first shaft 2121, so as to allow the oil gun to extend into the conducting passage 103.

Preferably, the liquid guiding main body 10 comprises a plug body 11 and a liquid guiding body 12. The plug body 11 has an inner wall 111, an outer wall 112 and an annular rim 113. The same ends of the inner wall 111 and the outer wall 112 are spaced apart at the annular rim 113, and a space 1101 is formed between the inner wall 111 and the outer wall 112. The middle of the annular edge 113 forms the socket 101.

The inner wall 111 forms a cavity 11101, and the cavity 11101 is communicated with the socket 101.

The fuel guide assembly 100 includes a plurality of sealing rings 30. The drainage body 12 is inserted into the compartment 1101. At least one sealing ring 30 is sleeved between the inner wall 111 and the inner side of the liquid guiding body 12, and at least one sealing ring 30 is sleeved between the outer wall 112 and the outer side of the liquid guiding body 12, so that when the liquid guiding body 12 is inserted into the compartment 1101, because the liquid guiding body 12 and the inner wall 111 and the outer wall 112 are sealed, neither oil nor oil vapor in the cavity 11101 overflows from the compartment 1101 between the inner wall 111 and the outer wall 112.

Preferably, the sealing ring 30 may be implemented by EPDM, CM, NBR, etc. Preferably, a rubber material such as FKM material which is not easily aged is selected.

Preferably, the liquid guiding body 12 is clamped to the insertion body 11. Specifically, the outer wall 112 of the plug body 11 is provided with at least one pair of clamping windows 11201. At least one pair of clamping protrusions 1201 are arranged on the outer wall of the liquid guide body 12. When the liquid guiding body 12 is inserted into the compartment 1101, the clamping protrusion 1201 is deformed under pressure, and when the clamping protrusion 1201 is aligned with the clamping window 11201, the clamping protrusion 1201 is clamped into the clamping window 11201, so that the inserting body 11 is connected to the liquid guiding body 12.

It can be understood that, because the liquid guiding body 12 and the insertion body 11 can be directly connected with each other through the clamping connection, the liquid guiding body 12 and the insertion body 11 can be quickly assembled with each other, so that the later-period quick maintenance can be conveniently carried out. Due to such a connection, when the plug body 11 or the drainage body 12 of the drainage body 10 is damaged, only one of the plug body and the drainage body needs to be detached for replacement.

Preferably, the plug body 11 and/or the drain body 12 of the drain body 10 according to the present invention are made of a plastic material, so that the overall weight of the fuel guide assembly according to the present invention can be made lighter. Such as: the plug body 11 and/or the drainage body 12 can be embodied as PA6, POM, PA66 and the above-mentioned materials with glass fibers added. It is worth mentioning that the inserting body 11 and the liquid guiding body 12 are made of the same material, so as to reduce the gap fluctuation of the sealing area caused by different shrinkage rates of different materials and structures in different production processes and using environment temperatures.

The liquid guiding body 12 forms a liquid guiding passage 1201 and the communication port 102 communicating with the liquid guiding passage 1201. After the liquid guiding body 12 is inserted into the partition 1101 and fixed to the insertion body 11, the liquid guiding channel 1201 is communicated with the cavity 11101 to form the conducting channel 103. When a predetermined amount of fuel needs to be filled into the fuel tank of the vehicle through the fuel guide assembly 100, the fuel gun is only required to be pushed away from the first sealing sheet 211 of the first sealing unit 21 and extend into the cavity 11101, and then the fuel in the fuel gun can flow to the fuel tank of the vehicle through the liquid guide passage 1201.

In a preferred embodiment of the present invention, the sealing assembly 20 further includes a second sealing unit 22, wherein the second sealing unit 22 includes a second sealing sheet 221 and a second rotating member 222, wherein the second sealing sheet 221 is pressure-rotatably sealed to the liquid guide channel 1201 by the second rotating member 222, so that when the oil gun extends into the liquid guide channel 1201, the second sealing sheet 221 is pressed to rotate, thereby allowing the oil gun to be inserted into the liquid guide channel 1201, and after the oil gun is pulled out, the second sealing sheet 221 can be reset, thereby sealing the liquid guide channel 1201, so as to prevent the oil vapor in the fuel tank of the vehicle from volatilizing and rising from the liquid guide channel 1201 to the cavity 11101. That is, the second rotating member 222 can automatically open and seal the fluid guide passage 1201 by inserting and removing the oil gun.

Specifically, the second rotating member 222 includes a second shaft body 2221 and a second torsion spring 2222. The second torsion spring 2222 is coupled to the second shaft body 2221 in a sleeved manner. The second shaft 2221 is rotatably mounted to the liquid guide body 12. The second sealing sheet 221 is pressed by the second torsion spring 2222 and tends to seal the liquid guide passage 1201. Therefore, when the oil gun does not extend into the fluid guide passage 1201, the second sealing piece 221 is pressed by the second torsion spring 2222 to seal the fluid guide passage 1201, and when the oil gun is inserted into the fluid guide passage 1201, the second sealing piece 221 is pressed to drive the second torsion spring 2222 to synchronously rotate around the second shaft 2221, so that the oil gun is allowed to be inserted into the fluid guide passage 1201. It will be appreciated that after the fuel tank of the vehicle is filled with fuel, the first sealing unit 21 and the second sealing unit 22 of the fuel guide assembly jointly seal the communication passage 103 as the fuel gun is pulled out, so that the oil vapor formed by the fuel in the fuel tank is difficult to escape from the insertion port 101. Particularly, when the oil gun finishes filling fuel, the oil gun moves to the cavity 11101 along with the separation of the oil gun from the liquid guide channel 1201 and is not pulled out from the insertion port 101, and the second sealing sheet 221 automatically resets to finish the first sealing. As the oil gun is removed from the conduction path 103, the first sealing fin 211 of the first sealing unit 21 is reset to complete the second sealing.

Preferably, the drainage body 12 includes an upper cylinder 121 and a lower cylinder 122. One end of the upper cylinder 121 forms a bottom opening 12101, and the other end of the upper cylinder 121 forms a top opening 12102. An upper chamber 12103 is formed between the bottom opening 12101 and the top opening 12102. The lower cylinder 122 of the fluid conducting body 12 forms the communication port 102 and a lower chamber 12201.

The second shaft 2221 is rotatably installed at the bottom of the upper cylinder 121 and covers the bottom opening 12101 of the lower cylinder 122. The upper cylinder 121 is fitted inside the inner wall of the lower cylinder 122 and held in the lower chamber 12201, and at least one sealing ring 30 is fitted between the upper cylinder 121 and the lower cylinder 122 to prevent oil or oil vapor from escaping between the upper cylinder 121 and the lower cylinder 122.

Preferably, a plurality of clamping blocks 123 are arranged on the inner wall of the upper cylinder 121 between the bottom opening 12101 and the top opening 12102, so that after the oil gun is inserted into the upper chamber 12103, the outer wall of the oil gun can be clamped by the clamping blocks 123 away from the inner wall of the upper cylinder 121, so that when the oil gun is used for filling fuel into a fuel tank of a vehicle, a user does not need to continuously apply a force for pressing the oil gun.

More preferably, the inner wall of the lower cylinder 122 is provided with a plurality of barrier plates 124 along the axial direction. When the fuel in the fuel tank of the vehicle gradually rises to flood the communication port 102 and continues to rise, the liquid fuel is blocked by the blocking plate 124, and thus no swirl occurs. This allows the fuel to rise smoothly. By the mode, fuel oil can not touch the sensor on the oil gun when the fuel oil is not filled in the whole fuel tank due to shaking, so that the condition of advancing and jumping the gun can not occur.

Further, the fuel guide assembly 100 includes a branch pipe 40, wherein the branch pipe 40 is connected to the communication passage 103.

The fuel assembly further includes a return tube body 50 and a delivery tube 60. The flow guide tube 60 forms a main tube channel 601, wherein the return tube 50 forms a return channel 501.

One end of the main pipe channel 601 is sealingly abutted to the communication port 102 of the liquid guiding body 10, so that the conduction channel 103 is communicated with the main pipe channel 601.

One end of the return pipe body 50 is hermetically communicated with the branch pipe 40. In one embodiment, the other end of the return pipe body 50 is directly connected to the main pipe channel 601 of the flow guide pipe 60. In another embodiment, the other end of the return pipe 50 and the other end of the main pipe channel 601 are simultaneously connected to the fuel tank. Preferably, the other end of the return tube body 50 is provided with a sealing and fastening structure, such as a cold plug structure or a plug structure, such as a structure in which a female connector and a male connector are engaged, to be detachably connected to the fuel tank.

Preferably, the branch pipe 40 is provided at a sidewall of the upper cylinder 121 to communicate with the liquid guide passage 1201.

When a fuel filler gun is inserted into the communication passage 103 and fuel is injected into the fuel tank, volatilized fuel vapor can pass through the branch pipe 40 and flow back to the main pipe passage 601 via the return passage 501 of the return pipe body 50 and be liquefied at the same time to flow toward the fuel tank.

The end of the delivery tube 60 is implemented to be hermetically communicated with the communication port 102 by means of a cold-plug structure or by means of a plug structure such as a structure in which a female connector and a male connector are fitted. Preferably, the delivery tube 60 is detachably mounted to the communication opening 102 of the liquid guiding body 12.

More preferably, the other end of the flow guide tube 60 is detachably fastened to an oil inlet of a fuel tank of any vehicle. Since both ends of the draft tube 60 are fixed and the draft tube 60 is made of a hard material, there is no need to separately provide a fixing base for fixing the draft tube 60. The delivery tube 60 may also be configured to be sealingly connected to the fuel tank by ultrasonic welding, cold staking, or by a staking arrangement, such as a mating female and male fitting arrangement.

In one embodiment, the flow tube 60 is made of a plastic material, and a snap-fit joint 70 is provided at the end of the flow tube 60 that is fastened to the oil inlet of the fuel tank, wherein the snap-fit joint 70 can be implemented as a female joint or a male joint. Through the mode, the fuel flow guide assembly can be rapidly butted and separated with an oil inlet of the fuel tank, so that the fuel flow guide assembly is convenient to rapidly disassemble and assemble.

Preferably, the oil filling pipe 60 has a five-layer structure, and the materials from inside to outside are respectively HDPE-Tie-EVOH-Tie-HDPE. HDPE is a commercially available common designation, such as basf, 9038. The filler tube 60 can also be of other multi-layer construction, such as 2-4 layers. The inner layer of the layer structure can also be selected from PA12, PA6, PA66, PA610 or other nylon plastic materials.

It will be appreciated by persons skilled in the art that the embodiments of the invention shown in the foregoing description are by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.