KR20200061206A - Filler nect device with improved fuel injection structure - Google Patents

Abstract

The present invention relates to a filler neck device with an improved fuel injection unit structure, which comprises: a filler neck housing which is provided at the upper portion of a main pipe connected to a fuel tank; a retainer which is accommodated in the filler neck housing; a lubricator inlet which is coupled to the upper portion of the filler neck housing, and has a coupling unit outwardly protruding; a fixture which is coupled to the filler neck housing to be arranged at the lower portion of the lubricator inlet, and has a corresponding coupling unit which corresponds to the coupling unit of the lubricator inlet; and a mounting bracket which is connected to the lubricator inlet to be mounted on a vehicle. Moreover, the coupling unit of the lubricator inlet is engaged after the corresponding coupling unit of the fixture is bent and compressed. In particular, in order to stably mount the main pipe connected to the fuel tank on a vehicle, the present invention is composed of the filler neck housing, the retainer, the lubricator inlet, the fixture and the mounting bracket. In addition, the binding force between the lubricator inlet and the fixture coupled to the filler neck housing is increased, thereby preventing dislocation and separation of the main pipe, caused by the self-weight of the main pipe and vibration during operation. Furthermore, a leakage of evaporation gas, HC gas and the like can be prevented.

Description

Filler neck device with improved fuel injection structure

The present invention is composed of a filler neck housing, a retainer, a refueling gun insert, a fixture and a mounting bracket to stably mount a main pipe connected to a fuel tank to a vehicle. In particular, the main refueling insert and fixing section coupled to the filler neck housing It relates to a filler neck device having an improved fuel injection structure that prevents the separation and separation of the main pipe from the main pipe long-term load or vibration during operation by increasing the binding force, and prevents leakage of evaporation gas, HC gas, and the like. .

In general, the vehicle is provided with a fuel tank for storing fuel required for combustion of the engine, the fuel tank is connected to the fuel pipe, and at the end of the fuel pipe is equipped with a vehicle fuel filler neck (Fuel Filler Neck) indicating a fuel refueling port. You can refuel.

In addition, a variety of mounting methods have been introduced for the filler neck device to fix the pipe connected to the fuel tank to the vehicle. For example, a variety of methods have been applied, such as forming a projection and a hole so as to correspond to the filler neck housing and the refueling gun insertion hole and fastening in a coupling form.

In particular, FIG. 4 is provided with a connector 300 connected to the bracket 200 to mount the pipe 100 to the vehicle, and the pipe 100 is mounted on the connector 300 to be mounted on the vehicle by the bracket 200 The structure is illustrated.

In this case, the coupling between the pipe 100 and the connector 300 is formed with a protrusion 110 on the pipe, and the connection part 300 is cut into a plurality of points to form a locking part 310 to caulk the locking part 310 ( Through the caulking) process, the engaging portion 310 of the connector is configured to be caught on the protruding portion 110 of the pipe.

In addition, the pillar neck device has a load greater than a certain level, and the pillar neck device is able to flow due to vibration generated during the operation of the vehicle. That is, the pillar neck device is affected not only by its own load, but also by the vibration of the vehicle.

In this case, the coupling portion between the protruding portion 110 of the pipe formed by the coupling by the caulking operation and the engaging portion 310 of the connector is vulnerable due to the self-load of the pillar-neck device due to the flow of the pillar-neck device. Therefore, the coupling portion between the pipe 100 and the connector 300 may not only fall, but also the problem that the pipe 100 may be detached from the connector 300.

In addition, even when a portion of the connection portion between the pipe 100 and the connection port 300 is separated, the connection port 300 may be formed in the space from the pipe 100. Thus, when the pipe 100 and the connector 300 are incompletely coupled, there is a fear that exhaust gas, such as evaporation gas or HC (hydrocarbon) gas, may leak into the excited space between the pipe 100 and the connector 300.

Therefore, there is an urgent need for the development of a pillar neck device that prevents the above-described problem, that is, a pipe having a self-load from separating from the vehicle, and that is free from leakage of evaporation gas and the like.

Republic of Korea Registered Patent No. 10-1795235 (Registration on Nov. 1, 2017)

Accordingly, the present invention was devised to improve the conventional problems,

In order to stably mount the main pipe connected to the fuel tank in the vehicle, it consists of a filler neck housing, a retainer, a refueling gun insertion port, a fixture, and a mounting bracket. In particular, it increases the coupling force between the refueling gun insertion port and the fixing section coupled to the filler neck housing. It is intended to prevent the separation and separation of the main pipe from the main pipe long-term load or vibration during operation, and to prevent leakage of evaporated gas, HC gas, and the like.

The present invention increases the coupling force through the seaming process between the filling section and the filling section of the refueling gun, and at the same time, the fuel injection section by further improving the coupling structure between the filler neck housing and the filling section and the filler neck housing and the fixing section. Another object is to increase the reliability of the coupling structure.

The present invention is to secure a stable coupling between each configuration by introducing a flow prevention portion to prevent the flow or rotation of the filler neck housing and the refueling gun insertion port, the filler neck housing and the retainer, and then the refueling opening and the retainer. For one purpose.

The pillow neck device having an improved fuel injection unit structure according to the present invention includes: a filler neck housing provided on an upper portion of a main pipe connected to a fuel tank; A retainer accommodated in the filler neck housing; A gas gun insertion hole coupled to the upper portion of the pillar neck housing and having an engaging portion protruding outward; A fastener coupled to the filler neck housing and disposed under the gasoline gun insertion port and having a corresponding coupling portion corresponding to a coupling portion of the gasoline gun insertion port; And a mounting bracket connected to the refueling receptacle and mounted on the vehicle, wherein the coupling portion of the refueling receptacle is bent, pressed and engaged.

The pillar neck housing according to the present invention is characterized in that it is provided with a support portion that protrudes outward and supports the coupling portion of the gas gun insert, and the fixture is provided with a stepped portion supported by the lower portion of the support.

The filler neck housing according to the present invention and the oiling gun insertion port are further characterized in that it further comprises a first flow prevention unit corresponding to each other to prevent the flow and rotation of the oiling gun insertion port.

The filler neck housing and the retainer according to the present invention are further characterized by further comprising a second flow prevention part for preventing flow and rotation of the retainer.

The upper end of the retainer according to the present invention is formed to be bent in the outer direction and is provided with a pressing portion placed on the upper surface of the filler neck housing, and the refueling gun insertion port, when engaged with the filler neck housing, the upper surface of the pressing portion of the retainer It characterized in that it further comprises a pressing portion for pressing.

The outer side of the filler neck housing according to the present invention is characterized in that the receiving groove is formed, the filler neck receiving groove is equipped with a sealing member.

The filler neck device having an improved fuel injection structure according to the present invention is composed of a filler neck housing, a retainer, a refueling gun insert, a fixture, and a mounting bracket to stably mount a main pipe connected to a fuel tank in a vehicle. By increasing the coupling force between the refueling gun insertion port and the fixing section coupled to the neck housing, it is possible to prevent the main pipe from being detached and separated from the main pipe load or vibration during operation, and to prevent leakage of evaporation gas, HC gas, and the like.

The present invention increases the coupling force through the seaming process between the filling section and the filling section of the refueling gun, and at the same time, the fuel injection section by further improving the coupling structure between the filler neck housing and the filling section and the filler neck housing and the fixing section. The reliability of the coupling structure can be increased.

The present invention secures a stable coupling between each configuration by introducing a flow prevention part to prevent the flow or rotation of the filler opening and the retainer after assembly of the filler neck housing and the filler opening, and the filler neck housing and the retainer Can increase.

1 is a perspective view showing a filler neck device having an improved fuel injection structure according to the present invention;
Figure 2 is an exploded perspective view showing a filler neck device according to the present invention,
Figure 3 is a cross-sectional view showing a filler neck device according to the present invention.
Figure 4 is a photograph showing a conventional fuel injection structure.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, the size of a component, the thickness of a line, and the like shown in the drawings referred to for describing the present invention may be exaggerated for convenience of understanding. In addition, the terms used in the description of the present invention are defined in consideration of functions in the present invention, and thus may vary according to a user, an operator's intention, and customs. Therefore, it is reasonable to define the terminology based on the contents of the present specification.

In addition, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only this embodiment allows the disclosure of the present invention to be complete, and the scope of the invention to those skilled in the art. It is provided to inform you completely.

As shown in FIGS. 1 to 3, the fuel injection unit structure according to the present invention is improved, and the filler neck device includes a filler neck housing 10 and a retainer 20 formed in a main pipe 1 connected to a fuel tank, Filler neck housing (10) coupled to the refueling gun insertion port (30), the filler refueling housing (10) connected to the refueling gun insertion port (30) and the fastener (40) connected to the refueling gun insertion port (30) It is configured to include a mounting bracket 50 is mounted on the vehicle.

First, as shown in FIGS. 1 to 3, the filler neck housing 10 according to the present invention is connected to a main pipe 1 connected to a fuel tank at the bottom, and an air drain port 2 is connected to the side.

Filler neck housing 10 according to the present invention is made of a hollow plastic material is provided with a hollow portion 11 to accommodate the retainer 20, the upper portion of the filler neck housing 10, the retainer 20, the refueling gun The coupling portion 14 for coupling between the insertion hole 30 and the fixture 40 is formed.

In addition, the receiving groove 13 is formed along the circumferential direction on the outer surface of the coupling portion 14 of the filler neck housing 10, and the sealing member 60 is mounted on the receiving groove 13. When the sealing member 60 mounted on the pillar neck housing 10, that is, the O-ring, is coupled to the gas gun insert 30, which will be described later, it is in close contact with the inside surface of the gas gun insert 30 to maintain airtightness.

Next, as shown in FIGS. 1 to 3, the retainer 20 according to the present invention is inserted into the hollow portion 11 of the pillar neck housing 10. At this time, the upper end of the retainer 20 is provided with a pressurized portion 21 which is bent outwardly and protrudes. When the retainer 20 is inserted into the pillar neck housing 10, the pillar neck housing is provided. It is placed on the top surface of (10). The pressurized portion 21 of the retainer 20 placed in the pillar neck housing 10 is pressurized by the filler gun insertion hole 30 when being coupled between the filler gun housing 30 and the filler neck housing 10, which will be described later. It is fixed to the filler neck housing 10.

In addition, after the retainer 20 is inserted and mounted in the pillar neck housing 10, the second flow prevention part FP2 is provided in the pillar neck housing 10 and the retainer 20 to prevent the retainer 20 from flowing or rotating. ) Is formed. As shown in FIG. 2, the second flow prevention part FP2 has a second flow prevention groove 16 formed by cutting an upper surface of the pillar neck housing 10 and a pressurized portion 21 of the retainer 20. It is composed of a second flow prevention protrusion 22 formed at the bottom. Therefore, when the coupling between the filler neck housing 10 and the retainer 20, the second flow prevention protrusion 22 of the retainer 20 is inserted into the second flow prevention groove 16 of the filler neck housing 10, thereby leading to the filler neck. After the housing 10 and the retainer 20 are assembled, the retainer 20 may be prevented from flowing or rotating.

2, the second flow prevention groove 16 is formed in the pillar neck housing 10, and the second flow prevention protrusion 22 is formed in the retainer 20. It is also possible that a second flow prevention protrusion is formed and a second flow prevention groove is formed in the retainer.

As shown in Figures 1 to 3, the gas gun insertion port 30 according to the present invention is made of a material such as a stainless steel series, which is formed in a cylindrical shape as a whole where the gas gun is inserted.

The refueling gun insert 30 according to the present invention is composed of an upper member 30A having a relatively small diameter and a lower member 30B having a relatively larger diameter than the upper member 30A. The upper member 30A is provided with a locking portion 31 for mounting and fixing the oil cap, and a lower portion 30B is formed with a coupling portion 32 bent outward. The connecting portion between the upper member 30A and the lower member 30B is formed with a stepped pressing portion 33.

First, when the retainer 20 is fired in the filler neck housing 10 according to the order in which it is coupled to the filler neck housing 10, as described above, the pressurized portion 21 of the retainer 20 is the filler neck housing 10 Is placed on the top side of the. Next, the oiling gun insertion port 30 is coupled to the pillar neck housing 10, and more specifically, the coupling part 14 of the filler neck housing 10 is inserted with the oiling gun insertion port 30. At this time, the lower surface of the pressing portion 33 of the insertion port of the refueling gun contacts the upper surface of the pressing portion 21 of the retainer 20. In this state, when fully engaged with the insertion hole and the fixture 40 of the oil gun, the pressing portion of the retainer 20 disposed between the pressing portion 33 of the oil gun insertion hole 30 and the upper surface of the filler neck housing 10 ( 21) the retainer 20 is stably fixed to the pillar neck housing 10 while being pressed.

Next, the coupling between the coupling portion 32 of the refueling gun insert 30 and the corresponding coupling portion 41 of the fixture 40 is made, which will be described in more detail in the section describing the fixture 40.

In addition, a second flow prevention portion (FP2) (FP1) is formed on the filler neck housing 10 and the refueling gun insertion port 30, and after coupling between the filler neck housing 10 and the refueling gun insertion port 30, the refueling gun insertion port ( 30) to prevent the flow or rotation.

The second flow prevention portion (FP2) (FP1) for this purpose, as shown in FIG. 2, the first flow prevention projection (15) protruding below the coupling portion (14) of the pillar neck housing (10), and the refueling gun insertion port (30) It is composed of a first flow prevention groove (34) formed by cutting the bottom. Therefore, when coupling between the filler neck housing 10 and the refueling gun insert 30, the first flow preventing protrusion 15 of the filler neck housing 10 is connected to the first flow preventing groove 34 of the refueling gun insert 30. After being inserted, the filler neck housing 10 and the gasoline gun insertion port 30 are assembled to prevent the gasoline gun insertion port 30 from flowing or rotating.

In the attached FIG. 2, the first flow prevention protrusion 15 is formed in the pillar neck housing 10, and the first flow prevention groove 34 is formed in the gas gun insertion opening 30, but on the contrary, the pillar neck It is also possible that a first flow prevention groove is formed in the housing, and a first flow prevention protrusion is formed in the gas gun insertion hole.

On the other hand, the mounting bracket 50 for mounting and fixing the filler neck device to the vehicle is coupled to the gas gun insertion port 30, and an insertion hole 51 is formed in the mounting bracket 50 to form an upper member of the gas gun insertion port 30. 30A is inserted. At this time, the mounting bracket 50 is mounted on the upper surface of the pressing portion 33 of the fueling gun insert 30, and then fixed to the fueling gun insert 30 by welding or the like.

In addition, the mounting bracket according to the present invention can be manufactured in various forms, and the illustration of FIG. 5 shows another embodiment of the mounting bracket. The mounting bracket 50 of FIG. 5 is made of plastic injection material, and is composed of a pair of first and second brackets 50A and 50B. In addition, mounting protrusions 53 are formed on the first and second brackets 50A and 50B, respectively.

The mounting bracket configured as described above is assembled into a gas gun insertion hole or a pillar neck housing (hereinafter referred to as a “pillar neck device”), and then mounted on a vehicle.

In this case, the mounting bracket of FIG. 5 is different from the mounting bracket of FIG. 2, that is, a plurality of bolt holes are formed and not a structure in which the bolt is fastened to the vehicle, but a mounting groove formed to correspond to the mounting projection 53 of the mounting bracket in the vehicle The mounting protrusion 53 of the mounting bracket installed in the pillar neck device FN is inserted into the vehicle (not shown).

Therefore, the mounting bracket according to the present invention can be manufactured in various forms according to various vehicle models or mounting structures, as shown in FIGS. 2 and 5.

1 to 3, the fastener 40 according to the present invention is inserted into the lower portion of the coupling portion 14 of the pillar neck housing 10, and then fixedly coupled with the gas gun insertion hole 30.

In general, the filler neck device has been introduced various mounting methods to secure the fuel pipe connected to the fuel tank to the vehicle. In particular, FIG. 4 is provided with a connector 300 connected to the bracket 200 to mount the fuel pipe 100 to the vehicle, and the connection pipe 100 is mounted to the connector 300 to be attached to the vehicle by the bracket 200. The structure to be mounted is illustrated.

In this case, the connection between the connection pipe 100 and the connection port 300 is formed with a protrusion portion 110 of the connection pipe, and the connection portion 300 is cut into multiple points to form a locking portion 310 to form a locking portion 310. Through the caulking (caulking) process, the engaging portion 310 of the connector is configured to engage the protrusion 110 of the connecting pipe.

In addition, the pillar neck device has a load greater than a certain level, and the pillar neck device is able to flow due to vibration generated during the operation of the vehicle. That is, the pillar neck device is affected not only by its own load, but also by the vibration of the vehicle.

In this case, the coupling portion between the protruding portion 110 of the connecting pipe formed by the coupling by the caulking operation and the engaging portion 310 of the connector is vulnerable due to the self-load of the pillar-neck device due to the flow of the pillar-neck device. Therefore, not only the coupling portion between the connection pipe 100 and the connection port 300 may fall, but also the connection pipe 100 may be detached from the connection port 300.

In addition, even when a portion of the connection portion between the connection pipe 100 and the connection port 300 is separated, the connection port 300 from the connection pipe 100 may be excited. When the connection pipe 100 and the connection port 300 are incompletely coupled in this way, there is a fear that exhaust gas such as evaporation gas, HC (hydrocarbon) gas, or the like may leak into the excited space between the connection pipe 100 and the connection port 300. have.

In the present invention, the fastener 40 is introduced to solve this problem, and the fastener 40 and the fuel gun insert are provided through a seaming process by combining the fastener 40 and the gas gun insert 30. 30) By increasing the bonding force between the main pipes 1, the main gas inlet 30 is not separated, thereby eliminating the fear of leakage of evaporation gas, HC gas, and the like.

To this end, first, the fueling gun inserting port 30 is provided with a coupling portion 32, which is formed by bending the lower end outward as described above, and the upper part of the fastener 40 is formed by bending in the outer direction. The corresponding coupling portion 41 corresponding to the coupling portion 32 of 30) is formed.

The mating part 32 of the refueling gun insertion port 30 thus formed and the corresponding engaging part 41 of the fastener 40 are put together, and then the corresponding engaging part 41 of the fastener 40 disposed at the bottom is bent upward. While doing the seaming work to squeeze in the circumferential direction. Coupling force of the fastener 40 formed through the seaming operation, the engaging portion 32 of the refueling gun insertion port 30 can be engaged. In other words, the gas gun insertion port 30 and the fixture 40 are integrated through the seaming operation to be coupled to the filler neck housing 10, thereby increasing the coupling force between the filler neck housing 10 and the gas gun insertion port 30. Therefore, it is possible to solve a separation problem or a gas leakage problem that may occur from bonding by a conventional caulking operation.

Further, the fastener 40 is formed with a stepped portion 42 corresponding to the support portion 12 of the filler neck housing 10, which is coupled between the gas gun insertion port 30 and the fastener 40, the fastener 40 The stepped portion 42 is caught by the lower portion of the support portion 12 of the pillar neck housing 10, thereby preventing the combination of the gas gun insertion hole 30 and the fixture 40 from being separated from the pillar neck housing 10, and being stable. It is possible to keep the bond.

In this case, although not shown in the accompanying drawings for more complete coupling, through the caulking operation at various points of the lower portion of the fixture, or through the seaming operation of applying pressure inward along the circumferential direction of the lower portion of the fixture, It is also desirable to ensure the bonding stability between the pillar neck housings.

As described above, although specific embodiments of the present invention have been described, the present invention is not limited by the embodiments disclosed in the present specification and the accompanying drawings, and may be variously modified by those skilled in the art without departing from the technical spirit of the present invention. .

FP1: First flow prevention part FP2: Second flow prevention part
1: Main pipe 2: Air drain port
10: pillar neck housing
11: Hollow 12: Support
13: receiving groove 14: joining part
15: first flow prevention protrusion 16: second flow prevention groove
20: retainer
21: pressurized portion 22: second flow prevention protrusion
30: refueling gun insertion port
30A: upper member 30B: lower member
31: locking portion 32: engaging portion
33; Pressing part 34: 1st flow prevention groove
40: fixture
41: mating coupling portion 42: crimp
43: step
50: mounting bracket
51: insertion hole
60: sealing member
100: connection pipe
200: bracket
300: connector

Claims (6)

A filler neck housing 10 provided on the main pipe 1 connected to the fuel tank;
A retainer 20 accommodated in the pillar neck housing 10;
The filler neck housing 10 is coupled to the upper portion, the gas gun insertion port 30 having a coupling portion (32) protruding in the outward direction;
A fastener 40 coupled to the filler neck housing 10 and disposed under the refueling gun insertion port 30 and having a corresponding coupling part 41 corresponding to the coupling part 32 of the refueling gun insertion port 30. ); And
It is made of, including; a mounting bracket 50 is mounted to the vehicle is connected to the refueling gun insertion port 30,
Filler neck device with improved fuel injection structure, characterized in that the engaging portion (32) of the refueling gun insertion port (30) is a corresponding engaging portion (41) of the fastener (40) bent and compressed.
According to claim 1,
The pillar neck housing 10 is provided with a support portion 12 that protrudes outward and supports the engaging portion 32 of the gas gun insertion port 30,
A filler neck device having an improved flow-injecting structure, characterized in that the fixture (40) is provided with a stepped portion (43) supported by a lower portion of the support portion (12).
According to claim 1,
The filler neck housing 10 and the fueling gun insertion port 30 further comprises a first flow prevention unit (FP1) corresponding to each other to prevent the flow and rotation of the fueling gun insertion port 30 Filler neck device with improved injection structure.
According to claim 1,
The filler neck housing 10 and the retainer 20 further include a second flow prevention portion FP2 for preventing the flow and rotation of the retainer 20. Neck device.
According to claim 1,
The upper end of the retainer 20 is formed to be bent in an outward direction and is provided with a pressing portion 21 placed on the upper surface of the pillar neck housing 10,
The refueling gun insertion port 30, when coupled with the filler neck housing 10, characterized in that it further comprises a pressing portion 33 for pressing the upper surface of the pressing portion 21 of the retainer 20 Filler neck device with improved fuel injection structure.
According to claim 1,
A receiving groove 13 is formed in the outer portion of the pillar neck housing 10,
A filler neck device having an improved fuel inlet structure, characterized in that a seal member (60) is mounted on the filler neck receiving groove (13).

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