CN221292976U - A device to prevent accidental gun jump during refueling - Google Patents

Abstract

The utility model relates to the technical field of fuel tank caps, and discloses a fueling gun preventing accidental jump of the fueling gun. The fueling gun preventing accidental jump of the fueling gun device comprises a fuel tank cap body and a fueling gun, wherein the outer surface of the fueling gun is provided with a vent hole, and the fuel tank cap body is provided with a gun head insertion hole. The device has the advantages of not being affected by foam and not wasting fuel, and solves the problem that when the fueling gun is plugged into the fuel tank cap, the air guide column also enters the fueling gun, and the diameter of the air guide column is too large, a large amount of foam will be generated when the fuel enters the fuel tank of the automobile, and when the fuel tank is almost full, the foam will block the vent pipe one step ahead of the fuel as the liquid level rises, thereby causing the gun to jump in advance, and the fuel tank is not full at this time, and when the fueling gun is pulled out or the car is driving, the remaining fuel in the fueling gun or the fuel in the fuel tank will enter the cavity of the air bag provided in the device, and the fuel entering the cavity cannot be used by the car, and then slowly evaporates, resulting in fuel waste.

Description

A device to prevent accidental gun jump during refueling

Technical Field

The utility model relates to the technical field of fuel tank caps, in particular to a fueling gun misjump prevention device.

Background technique

Cars are common means of transportation, and they need to be refueled during use. Cars are generally refueled using a refueling gun. A vent is provided at one end of the refueling gun that is inserted into the fuel tank. When the fuel tank is full, the gasoline floods the vent, causing the refueling gun to jump. The fuel tank cap of the prior art does not protect the vent. During refueling, the gasoline in the fuel tank may splash onto the vent, causing the refueling gun to accidentally jump when the fuel tank is not full.

For example, publication number CN112918245B proposes a refueling gun accidental jump prevention device, including a fuel tank cap. The fuel tank cap is provided with an oil inlet channel. The inner wall of the oil inlet channel is provided with a connecting chamber in cooperation with the vent hole of the refueling gun, so that when the refueling gun is plugged into the oil inlet channel, the connecting chamber is connected to the vent hole. The fuel tank cap is provided with a vent pipe connected to the connecting chamber. The pipe mouth of the vent pipe is provided with a protective cover. When the refueling gun is inserted into the oil inlet channel of the fuel tank cap by the refueling gun accidental jump prevention device of the present invention, the vent hole of the refueling gun is connected to the connecting chamber. During the refueling process, the vent hole is connected to the vent pipe. The fuel splashed in the fuel tank can be intercepted by the protective cover when it reaches the protective cover, thereby preventing the splashed fuel from entering the vent pipe, thereby preventing the vent hole from being blocked and causing the refueling gun to accidentally jump.

When the device is in use, when the refueling gun is plugged into the fuel tank cap, the air guide column also enters the interior of the refueling gun. Since the diameter of the air guide column is too large, a large amount of foam will be generated when the fuel enters the automobile fuel tank. When the fuel tank is almost full, the foam will block the vent pipe before the fuel as the liquid level rises, thereby causing the gun to jump in advance and causing an accidental jump. At this time, the fuel tank is not full yet, and when the refueling gun is pulled out or the car is driving, the remaining fuel in the refueling gun or the fuel in the fuel tank will enter the cavity of the airbag provided in the device. The fuel entering the cavity cannot be used by the car and then slowly evaporates, resulting in a waste of fuel. Therefore, a refueling gun anti-accidental jump device is proposed to solve the above problem.

Utility Model Content

1. Technical issues to be solved

In view of the deficiencies in the prior art, the utility model provides a refueling gun anti-misjumping device, which has the advantages of not being affected by foam in the refueling gun jumping and not wasting fuel, and the like. It solves the problem that when the device is in use, the refueling gun is plugged into the fuel tank cap and the air guide column also enters the interior of the refueling gun. Since the diameter of the air guide column is too large, a large amount of foam will be generated when the fuel enters the automobile tank. When the fuel tank is almost full, the foam will block the vent pipe before the fuel as the liquid level rises, causing the gun to jump in advance. At this time, the fuel tank is not full yet, and when the refueling gun is pulled out or the car is driving, the remaining fuel in the refueling gun or the fuel in the fuel tank will enter the cavity of the airbag set in the device, and the fuel entering the cavity cannot be used by the car, and then slowly evaporates, resulting in fuel waste.

(II) Technical solution

The utility model provides a technical solution to the above-mentioned technical problems as follows: a refueling gun prevention device comprising a fuel tank cover body and a refueling gun, the outer surface of the refueling gun being provided with a vent hole, the fuel tank cover body being provided with a gun head insertion hole, the refueling gun being inserted into the gun head insertion hole, the inner wall of the gun head insertion hole being provided with a connecting hole adapted to the vent hole, the inner wall of the gun head insertion hole being fixedly connected with sealing rings located on both sides of the connecting hole and adapted to the refueling gun, the outer side of the fuel tank cover body being provided with a foam barrier assembly adapted to the connecting hole, the interior of the fuel tank cover body being provided with a cylinder assembly, the interior of the fuel tank cover body being provided with a guide rod assembly which is transmitted with the cylinder assembly and extends to the inside of the gun head insertion hole and adapted to the refueling gun, and the top of the cylinder assembly being provided with a jet assembly extending to the interior of the refueling gun.

The beneficial effect of the utility model is that the refueling gun is inserted into the gun head insertion hole. During this process, the jet assembly also enters the interior of the refueling gun, the front end of the refueling gun contacts the guide rod assembly, and pushes the guide rod assembly to slide inside the fuel tank cover body, and then the cylinder assembly inhales air through the jet assembly. When the U-shaped rod drives the limit plate to move until the limit plate fits with the inner cavity bottom wall of the columnar cavity, the refueling gun is no longer inserted with force, the sealing ring fits tightly with the outer side of the refueling gun, and an annular cavity is formed by the inner wall of the gun head insertion hole, the sealing ring and the outer side of the refueling gun, and the annular cavity is connected with the vent hole and the connecting hole. The holes are all connected. When the foam generated by refueling contacts the foam barrier component, the foam barrier component separates the foam from the connecting holes and does not allow the foam to block the connecting holes. When the oil liquid level contacts the foam barrier component, the oil can pass through the foam barrier component to block the connecting holes, thereby causing the refueling gun to jump. In the process of pulling out the refueling gun, the guide rod assembly begins to reset under the drive of the cylinder assembly, and then the cylinder assembly sprays air through the jet assembly to blow away the oil on the inner wall of the oil outlet pipe of the refueling gun. The refueling anti-misjumping device has the advantages of not being affected by foam when the refueling gun jumps and not wasting oil.

On the basis of the above technical solution, the present invention can also be improved as follows.

Furthermore, the foam barrier assembly includes a fixing ring and an annular gauze, the outer side of the fuel tank cover body is fixedly connected with fixing rings located on both sides of the connecting hole, and the outer side of the fixing ring is fixedly connected with the same annular gauze.

The beneficial effect of adopting the above-mentioned further scheme is that the fixed ring, the annular belt-shaped gauze and the fuel tank cover body form an annular cavity, and the annular cavity is connected to the connecting hole. When the foam generated by refueling contacts the annular belt-shaped gauze, the connecting hole can take in air from the part of the annular belt-shaped gauze that is not contacted by the foam. Only when the oil liquid level passes through the annular belt-shaped gauze and blocks the connecting hole will the gun jump, thereby achieving the effect of preventing the connecting hole from being blocked by the foam generated by refueling and causing a false jump.

Further, the cylinder assembly comprises a columnar cavity, a return spring and a piston, the inside of the oil tank cover body is provided with a columnar cavity, the top wall of the inner cavity of the columnar cavity is fixedly connected with a return spring, and the bottom of the return spring is fixedly connected with a piston which is slidably connected with the inner wall of the columnar cavity;

Furthermore, the jet assembly includes a return tube and a jet head. The top of the columnar cavity is fixedly connected to a return tube that is connected to the columnar cavity and extends into the interior of the refueling gun. The end of the return tube away from the columnar cavity is fixedly connected to a jet head that is adapted to the refueling gun. The jet head is connected to the return tube, and the jet direction of the jet head is inclined to point toward the oil outlet of the refueling gun.

The beneficial effect of adopting the above-mentioned further scheme is that when the return spring recovers its deformation, it drives the piston to slide to the right along the inner wall of the cylindrical cavity, and the air between the piston and the top wall of the inner cavity of the cylindrical cavity is transported to the nozzle through the return tube, and then the nozzle discharges the air in the direction of the oil outlet of the refueling gun along the inclination, thereby achieving the effect of blowing away the remaining oil inside the refueling gun.

Furthermore, the guide rod assembly includes a U-shaped rod, a limit plate and a push rod. The inside of the fuel tank cover body is slidably connected to a U-shaped rod fixedly connected to the bottom of the piston and extending to the inside of the gun head insertion hole. The outside of the U-shaped rod is fixedly connected to a limit plate located inside the columnar cavity. The end of the U-shaped rod away from the limit plate is fixedly connected to a push rod located inside the gun head insertion hole and adapted to the refueling gun.

The beneficial effect of adopting the above-mentioned further scheme is that when the refueling gun is inserted into the gun head insertion hole, during this process, when the front end of the refueling gun pushes the push rod, the U-shaped rod drives the sliding of the left inside the fuel tank cover body, and at the same time, the U-shaped rod drives the limit plate to move until the limit plate fits with the bottom wall of the inner cavity of the columnar cavity. During this process, the U-shaped rod drives the piston to slide to the left along the inner wall of the columnar cavity, and then causes the return spring to undergo elastic deformation, thereby driving the piston to move during the insertion of the refueling gun.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the use of the utility model;

Fig. 2 is a cross-sectional view of the jet nozzle of the utility model;

Figure 3 is a schematic diagram of the appearance of the utility model;

FIG4 is a cross-sectional view of the utility model.

In the figure: 1. fuel tank cover; 2. gun head insertion hole; 3. refueling gun; 4. connecting hole; 5. sealing ring; 6. foam barrier assembly; 601. fixing ring; 602. annular belt-shaped mesh; 7. cylinder assembly; 701. columnar cavity; 702. return spring; 703. piston; 8. guide rod assembly; 801. U-shaped rod; 802. limit plate; 803. push rod; 9. jet assembly; 901. return pipe; 902. jet head.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In the embodiment, as shown in Figures 1-4, a refueling gun misjumping prevention device is provided. The utility model comprises a fuel tank cover body 1 and a refueling gun 3, wherein the outer surface of the refueling gun 3 is provided with a vent hole 3a, the fuel tank cover body 1 is provided with a gun head insertion hole 2, the refueling gun 3 is inserted into the gun head insertion hole 2, the inner wall of the gun head insertion hole 2 is provided with a connecting hole 4 adapted to the vent hole 3a, the inner wall of the gun head insertion hole 2 is fixedly connected with sealing rings 5 located on both sides of the connecting hole 4 and adapted to the refueling gun 3, the outer side of the fuel tank cover body 1 is provided with a foam barrier component 6 adapted to the connecting hole 4, the interior of the fuel tank cover body 1 is provided with a cylinder component 7, the interior of the fuel tank cover body 1 is provided with a guide rod component 8 which is transmitted with the cylinder component 7 and extends to the inside of the gun head insertion hole 2 and is adapted to the refueling gun 3, and the top of the cylinder component 7 is provided with a jet component 9 extending to the inside of the refueling gun 3;

The foam barrier assembly 6 includes a fixing ring 601 and an annular gauze 602. The outer side of the fuel tank cover 1 is fixedly connected with the fixing ring 601 located on both sides of the connecting hole 4. The outer side of the fixing ring 601 is fixedly connected with the same annular gauze 602.

The fixing ring 601, the annular gauze 602 and the fuel tank cover 1 form an annular cavity, and the annular cavity is connected to the connecting hole 4. When the foam generated by refueling contacts the annular gauze 602, the connecting hole 4 can take in air from the part of the annular gauze 602 that is not contacted by the foam. Only when the oil level passes through the annular gauze 602 and blocks the connecting hole 4, the gun will jump, so that the connecting hole 4 will not be blocked by the foam generated by refueling, thereby achieving the effect of preventing the connecting hole 4 from being blocked by the foam generated by refueling and causing false jumps.

The cylinder assembly 7 comprises a columnar cavity 701, a return spring 702 and a piston 703. The inner part of the oil tank cover 1 is provided with a columnar cavity 701. The top wall of the inner cavity of the columnar cavity 701 is fixedly connected with the return spring 702. The bottom of the return spring 702 is fixedly connected with the piston 703 which is slidably connected with the inner wall of the columnar cavity 701.

The jet assembly 9 includes a return tube 901 and a jet head 902. The top of the columnar cavity 701 is fixedly connected with a return tube 901 which is connected with the columnar cavity 701 and extends into the inside of the refueling gun 3. The end of the return tube 901 away from the columnar cavity 701 is fixedly connected with a jet head 902 adapted to the refueling gun 3. The jet head 902 is connected with the return tube 901, and the jet direction of the jet head 902 is inclined to point to the oil outlet of the refueling gun 3.

When the return spring 702 recovers its deformation, it drives the piston 703 to slide rightward along the inner wall of the columnar cavity 701, and the air between the piston 703 and the top wall of the inner cavity of the columnar cavity 701 is transported to the nozzle 902 through the return pipe 901, and then the nozzle 902 discharges the air in the direction of the oil outlet of the refueling gun 3, so as to achieve the effect of blowing away the residual oil in the refueling gun 3;

The guide rod assembly 8 includes a U-shaped rod 801, a limiting plate 802 and a push rod 803. The inside of the fuel tank cover body 1 is slidably connected with a U-shaped rod 801 fixedly connected to the bottom of the piston 703 and extending to the inside of the gun head insertion hole 2. The outside of the U-shaped rod 801 is fixedly connected with a limiting plate 802 located inside the columnar cavity 701. The end of the U-shaped rod 801 away from the limiting plate 802 is fixedly connected with a push rod 803 located inside the gun head insertion hole 2 and adapted to the refueling gun 3.

Insert the refueling gun 3 into the gun head insertion hole 2. During this process, when the front end of the refueling gun 3 pushes the push rod 803, it drives the U-shaped rod 801 to slide to the left inside the fuel tank cover body 1. At the same time, the U-shaped rod 801 drives the limiting plate 802 to move until the limiting plate 802 is in contact with the bottom wall of the inner cavity of the columnar cavity 701. During this process, the U-shaped rod 801 drives the piston 703 to slide to the left along the inner wall of the columnar cavity 701, and then causes the return spring 702 to undergo elastic deformation, thereby driving the piston 703 to move during the process of inserting the refueling gun 3.

working principle:

Step 1: Insert the refueling gun 3 into the gun head insertion hole 2. During this process, the jet head 902 and a part of the return tube 901 enter the interior of the refueling gun 3. When the front end of the refueling gun 3 contacts the push rod 803, the front end of the refueling gun 3 pushes the push rod 803 to drive the U-shaped rod 801 to slide to the left inside the tank cover 1. At the same time, the U-shaped rod 801 drives the limiting plate 802 to move until the limiting plate 802 fits with the bottom wall of the inner cavity of the columnar cavity 701. During this process, the U-shaped rod 801 drives the piston 703 to slide to the left along the inner wall of the columnar cavity 701, thereby causing the return spring 702 to release. The air passes through the nozzle 902 and the return tube 901 into the space between the piston 703 and the top of the columnar cavity 701. When the U-shaped rod 801 drives the limiting plate 802 to move until the limiting plate 802 fits with the inner bottom wall of the columnar cavity 701, the fueling gun 3 is no longer inserted with force. The sealing ring 5 fits tightly with the outer side of the fueling gun 3. The inner wall of the gun head insertion hole 2, the sealing ring 5 and the outer side of the fueling gun 3 form an annular cavity, and the annular cavity is connected with the vent hole 3a and the connecting hole 4. At the same time, the sealing ring 5 will exert a certain friction force on the fueling gun 3 so that the fueling gun 3 will not pop out by itself.

Step 2: The fixing ring 601, the annular gauze 602 and the fuel tank cover 1 form an annular cavity, and the annular cavity is connected to the connecting hole 4. When the fuel tank is almost full, the foam generated by the fuel entering the fuel tank contacts the annular gauze 602, and the connecting hole 4 can take in air from the part of the annular gauze 602 that is not contacted by the foam. Only when the oil level passes through the annular gauze 602 and blocks the connecting hole 4, the gun will jump, so that the connecting hole 4 will not be blocked by the foam generated by refueling, thereby achieving the effect of preventing the connecting hole 4 from being blocked by the foam generated by refueling and causing false jumps;

Step 3: During the process of pulling out the refueling gun 3, the front end of the refueling gun 3 is separated from the push rod 803, and then the U-shaped rod 801 stops applying tension to the return spring 702, so that the return spring 702 recovers its deformation, driving the piston 703 to slide to the right along the inner wall of the columnar cavity 701, and the air between the piston 703 and the top wall of the inner cavity of the columnar cavity 701 is transported to the nozzle 902 through the return tube 901, and then the nozzle 902 discharges the air in the direction of the oil outlet of the refueling gun 3, thereby achieving the effect of blowing away the remaining oil inside the refueling gun 3.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a mistake jump rifle device is prevented in oiling, includes fuel tank cap body (1) and nozzle (3), air vent (3 a), its characterized in that have been seted up to the surface of nozzle (3): the oil tank cover body (1) is provided with a gun head inserting hole (2), an oil gun (3) is inserted into the gun head inserting hole (2), a communication hole (4) matched with an air vent (3 a) is formed in the inner wall of the gun head inserting hole (2), sealing rings (5) which are arranged on two sides of the communication hole (4) and matched with the oil gun (3) are fixedly connected with the inner wall of the gun head inserting hole (2), foam blocking components (6) matched with the communication hole (4) are arranged on the outer side of the oil tank cover body (1), an air cylinder component (7) is arranged in the oil tank cover body (1), a guide rod component (8) which is in transmission with the air cylinder component (7) and extends to the inside of the gun head inserting hole (2) and matched with the oil gun (3) is arranged on the top of the air cylinder component (7), and an air injection component (9) extending to the inside of the oil gun (3) is arranged on the top of the air cylinder component (7).

2. The fueling anti-misplug device of claim 1 wherein: the foam separation assembly (6) comprises a fixing ring (601) and a girdle-shaped gauze (602), wherein the fixing ring (601) positioned at two sides of the communication hole (4) is fixedly connected to the outer side of the fuel tank cover body (1), and the same girdle-shaped gauze (602) is fixedly connected to the outer side of the fixing ring (601).

3. The fueling anti-misplug device of claim 1 wherein: the cylinder assembly (7) comprises a cylindrical cavity (701), a return spring (702) and a piston (703), wherein the cylindrical cavity (701) is formed in the oil tank cover body (1), the return spring (702) is fixedly connected to the top wall of the inner cavity of the cylindrical cavity (701), and the piston (703) which is slidably connected with the inner wall of the cylindrical cavity (701) is fixedly connected to the bottom of the return spring (702).

4. A fueling anti-misplug device as set forth in claim 3 wherein: guide arm subassembly (8) are including U type pole (801), spacing piece (802) and ejector pin (803), inside sliding connection of fuel tank cap body (1) have with piston (703) bottom fixed connection and extend to inside U type pole (801) of rifle head insertion hole (2), outside fixedly connected with of U type pole (801) is located spacing piece (802) inside columnar cavity (701), the one end fixedly connected with that spacing piece (802) was kept away from to U type pole (801) is located inside rifle head insertion hole (2) and ejector pin (803) with nozzle (3) adaptation.

5. A fueling anti-misplug device as set forth in claim 3 wherein: jet subassembly (9) are including returning type pipe (901) and jet head (902), column cavity (701) top fixedly connected with communicates and extends to the inside returning type pipe (901) of nozzle (3) with it, the one end fixedly connected with that column cavity (701) were kept away from to returning type pipe (901) is with jet head (902) of nozzle (3) adaptation, jet head (902) communicate with returning type pipe (901), the oil-out of nozzle (3) is directed to jet direction slope of jet head (902).