KR101498491B1 - Fuel filler neck device of vehicle fuel-system - Google Patents

Abstract

The present invention relates to a filler neck device of a vehicle fuel system, comprising: a filler neck housing having a through hole of which both ends are penetrated; an opening/closing member which is hinge-fixed to the inner circumferential surface of the filler neck housing; an elastic member to elastically support the opening/closing member at the inner circumferential surface of the filler neck housing; an operating member which is mounted at the opening/closing member to be rotated; a locking member which is mounted to be spaced apart from the operating member; and a locking unit to prevent the through hole from being opened by the opening/closing member by not allowing the operating member to be rotated in the opening/closing member when a gasoline fuel hose nozzle is used. According to the present invention, the filler neck device enables fuel to be injected into a fuel tank by opening the filler neck housing by the opening/closing member when a diesel fuel hose nozzle is fitted into the filler neck housing and prevents rotation of the operation member by the locking member if the gasoline fuel hose nozzle is fitted so that the opening/closing member to close the filler neck housing not is not opened, thereby preventing, in advance, false lubrication due to a mistake of a person who feeds the fuel.

Description

TECHNICAL FIELD [0001] The present invention relates to a filler neck device for an automobile fuel system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillar neck device for an automotive fuel system, and more particularly to a pillar neck device for an automotive fuel system that can prevent a fuel injection failure of a gasoline vehicle from a diesel vehicle.

Generally, a vehicle is equipped with a fuel system for supplying fuel to obtain power.

The fuel system includes a fuel tank containing fuel, a canister for collecting the evaporated fuel generated from the fuel tank and sending it to the combustion chamber, and a filler neck into which a fuel gun for injecting fuel is inserted.

The filler neck structure of the fuel system is disclosed in Korean Patent Publication No. 10-2010-0020589 (Patent Document 1: 2010.02.23), Korean Patent Publication No. 10-2010-0047643 (Patent Document 2: 2010.05.10), Japanese Patent Application Laid- 2008-247110 (Patent Document 3: Oct. 16, 2008).

The filler neck disclosed in Patent Document 2 includes a filler pipe, a leveling tube, and a shut-off opening / closing member unit.

The filler pipe is mounted at an angle to the fuel tank so as to be connected to the inside of the fuel tank. At the upper end of the filler pipe, a fuel injection port into which the fuel gas gun is inserted is formed. The filler pipe is located inside the fuel tank, and a plurality of fuel injection holes for injecting fuel into the fuel tank are formed.

The leveling tube is for controlling the amount of fuel injected into the fuel tank. The leveling tube is connected to the fuel inlet of the filler pipe and the fuel tank, and connects the inside of the filler pipe and the inside of the fuel tank.

The shut-off opening / closing member unit is constituted by a filler pipe to prevent the fuel injected into the fuel tank from flowing back through the filler pipe, and is composed of the opening and closing member body and the floating member.

On the other hand, diesel passenger cars using diesel fuel as fuel have recently been developed and marketed due to high fuel efficiency.

When the driver of the diesel passenger car forgets to ask for the diesel fuel, the main source of the gasoline mistakenly feeds the gasoline, which causes the fuel to mix with the diesel fuel and the gasoline.

Such fuel mixture is generated, which causes various problems such as damage to the piston of the engine, the intake and exhaust valve opening and closing member, the nozzle of the injector, various bearings, and the damage of the fuel injection device due to insufficient lubricity due to thermal and mechanical overload of the engine.

Korean Patent Publication No. 10-2010-0020589 (Feb. 23, 2010) Korean Patent Publication No. 10-2010-0047643 (May 10, 2010) Japanese Unexamined Patent Application Publication No. 2008-247110 (Oct. 16, 2008)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a fuel injector and a fuel injector, It is an object of the present invention to provide a filler neck device of a system.

According to another aspect of the present invention, there is provided a filler neck comprising: a filler neck housing having a through hole through which both end portions pass, opposite side inner circumferential surfaces having guide grooves formed in opposite directions; An opening / closing member hinged to the neck housing; an elastic member elastically supporting the opening / closing member on the inner circumferential surface of the pillar neck housing; and a receiving groove portion rotatably seated in the receiving groove portion, A locking member provided apart from the operating member, and a locking member which is pressed when the gasoline filling gun is fitted in the through hole is seated on the operating member and operated And a locking mechanism for preventing the opening / closing member from opening the through hole so that the member is not rotated, When the operating member is pressed by the neck housing to press the operating member, when the operating member moves along the guide groove, the operating member rotates in the receiving groove to push the opening and closing member downward to open the through hole.

The filler neck housing is preferably formed to have a diameter smaller than the diameter of the injection port into which the main gun is inserted, and is preferably provided on the inner peripheral surface of the small diameter portion that is opened and closed by the opening and closing member.

Preferably, the opening and closing member has a hinge protrusion protruding from an outer circumferential surface thereof, the hinge protrusion being hinged to the inner circumferential surface of the pillar neck housing by a pin member.

Further, it is preferable to further include a fastening member coupled to the opening and closing member after penetrating the locking member to prevent the locking member from being detached.

It is preferable that the opening and closing member is provided with a fastening boss having a fastening groove for fastening the fastening member to the receiving groove.

It is preferable that the elastic member is constituted by a torsion spring whose one end is supported by the pillar neck housing and the other end is supported by the opening and closing member so that the elastic force generated when the opening and closing member opens the through hole acts to block the through hole.

It is also preferable that the locking mechanism includes at least one locking protrusion protruding from the locking member toward the operation member, and a locking groove formed in the operation member and corresponding to the locking protrusion.

Preferably, the locking mechanism further includes a coil spring provided between the opening and closing member and the locking member for returning the locking member, which is seated on the operating member by the pressure of the gasoline filling gun, to the original position.

Further, it is preferable that the coil spring is configured such that one end is supported by the opening and closing member, the tack is supported by the bottom surface of the locking member, and the elasticity is generated when the locking member is pressed by the gasoline fueling gun.

According to the present invention, when the diesel fuel gun is inserted into the pillar neck housing, the opening / closing member opens the pillar neck housing to inject fuel into the fuel tank. When the gasoline fuel gun is fitted, the locking member prevents rotation of the actuating member, The opening / closing member closing the opening / closing member is not opened, so that it is possible to prevent the occurrence of the mist generation due to the mistake of the gasifier.

1 is an exploded perspective view showing a pillar neck device of an automotive fuel system according to an embodiment of the present invention;
FIG. 2 and FIG. 3 are perspective views showing a part of a filler neck device of an automotive fuel system according to an embodiment of the present invention. FIG.
FIG. 4 is a perspective view showing a filler neck housing partially cut away in the pillar neck device of FIG. 1. FIG.
5A and 5B are cross-sectional views illustrating a filler neck housing in a pillar neck device.
6 and 7 are cross-sectional views showing the state of use of the diesel oiling gun in the pillar neck device of Fig. 1;
Figs. 8 and 9 are cross-sectional views showing the state of use of gasoline grooving gun in the pillar neck device of Fig. 1;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is an exploded perspective view showing a pillar neck device of an automotive fuel system according to an embodiment of the present invention, and FIGS. 2 and 3 show a part of a pillar neck device of an automotive fuel system according to an embodiment of the present invention And FIG. 4 is a perspective view of the filler neck housing of FIG. 1, showing a partially cutaway portion of the filler neck housing. FIGS. 5A and 5B are cross-sectional views showing the pillar neck housing in the pillar neck device, FIGS. 6 and 7 are cross-sectional views showing the state of use of the diesel fuel gun in the pillar neck device of FIG. 1, Fig. 3 is a cross-sectional view showing the state of use of the gasoline fueling gun in the pillar neck device of Fig.

As shown in the figure, the filler neck device 100 of an automotive fuel system according to an embodiment of the present invention includes a filler neck housing 110 having a through hole 110a through which a main gun is inserted and both ends are penetrated, An opening and closing member 120 hinged to the inner surface of the housing 110 for opening and closing the inner circumferential surface of the pillar neck housing 110 and an elastic member for elastically supporting the opening and closing member 120 on the inner circumferential surface of the pillar neck housing 110 An operating member 140 for opening the opening and closing member 120 when the gasket is pressed by the diesel injector 101, a locking member 150 provided apart from the operating member 140, The operation member 140 is prevented from rotating in the receiving groove 122 when the member 150 is pressed and seated on the operation member 140 to prevent the opening and closing member 120 from opening the through hole 110a Lt; / RTI >

First, the diesel injector 101 refers to a gasoline gun for injecting light oil into a diesel vehicle, while the gasoline injector gun 102 refers to a gasoline gun for injecting gasoline into a gasoline vehicle.

Normally, the diameter of the diesel injecting gun 101 installed in the gas station is larger than the diameter of the gasoline injecting gun 102.

The filler neck housing 110 is formed in the shape of a pipe having a through hole 110a through which both ends are passed, and the diesel injector 101 is inserted into one end thereof. The filler neck housing 110 is connected to a fuel pipe having the other end connected to the fuel tank, and the fuel discharged from the diesel injector 101 is discharged through the other end.

Here, the filler neck housing 110 is formed with an inner diameter into which the diesel oiling gun 101 can be fitted. The inner diameter of one end of the filler neck housing 110 in which the diesel injector 101 is inserted is formed to be large enough to allow the diesel injector 101 to be easily fitted into the filler neck housing 110. In the middle portion of the filler neck housing 110, The small diameter portion 111 for guiding the diesel particulate filter 101 is formed to have a predetermined length so as to press the opening and closing member 120 described below. The opening and closing member 120 for preventing the fuel from entering the fuel tank through the other end of the pillar neck housing 110 by closing the lower side (through hole) of the small-diameter portion 111 is provided below the small- Respectively.

The filler neck housing 110 is formed with guide grooves 112 at positions facing each other on both sides of the inner circumferential surface.

The guide groove 112 is engaged with an engaging projection 142 of an operation member 140 to be described later so that when the operation member 140 is pressed by the diesel oiling gun 101, , And they are formed in opposite eaves to each other.

The opening and closing member 120 is formed in a circular shape so that the fuel discharged from the diesel infiltration gun 101 which is in close contact with the bottom edge of the small diameter portion 111 and is fitted over the small diameter portion 111, As shown in Fig.

The opening and closing member 120 is formed with a protruding rib 121 upwardly along the edge thereof and an accommodating groove 122 for accommodating the actuating member 140 and the locking member 150 to be described later is formed on the upper surface thereof. The opening and closing member 120 has a hinge protrusion 123 protruding from the outer circumferential surface of the protruding rib 121 to be fixed to the inner circumferential surface of the pillar neck housing 110. A fixing protrusion is formed on the inner circumferential surface of the pillar neck housing 110 at a lower side of the small diameter portion 111 so that the hinge protrusion 123 of the opening and closing member 120 is hinged by the pin member 124.

Of course, the pin member 124 may be fixed to the inner circumferential surface of the pillar neck housing 110 without fixing protrusions protruding from the inner circumferential surface of the pillar neck housing 110.

On both sides of the protruding rib 121 of the opening and closing member 120, a slide groove 125 is formed in which an engaging projection 142 of an operation member 140 described later is inserted and slid. The slide groove 125 is formed as a long hole so that each pair of the engaging projections 142 can be inserted and slid. That is, the slide grooves 125 are elongated in the opposite directions about the positions facing each other, so that when the actuating member 140 is pressed and rotated by the diesel oil injecting gun 101, The projection 142 is configured to slide.

The locking member 150 is provided at a center of the receiving groove 122 of the opening and closing member 120 so that the locking member 150 is separated from the mounting portion 141 of the operation member 140, A fastening boss 126 having a fastening groove to fasten the fastening member 170 is formed. Here, the fastening member 170 has threads on the outer periphery, and the fastening groove is formed with a thread to which the fastening member 170 is screwed.

A ring-shaped support projection 127 is formed around the fastening boss 126 of the opening and closing member 120 so as to form a fitting groove in which the lower end of a return member 160 to be described later is inserted and supported.

The elastic member 130 is constituted by a torsion spring that is fitted to the pin member 124 that hinges the opening and closing member 120 to the inner surface of the pillar neck housing 110. The elastic member 130 has one end supported by the opening and closing member 120 and the other end supported by the inner surface of the pillar neck housing 110 so that when the opening and closing member 120 is rotated about the pin member 124, The elastic member is configured to exert an elastic force when the opening and closing member 120 opens the lower side of the small diameter portion 111 of the pillar neck housing 110. [

In other words, when the diesel oiling gun 101 presses the opening and closing member 120 to open the lower portion of the small diameter portion 111 of the pillar neck housing 110, the elastic member 130 generates elastic force, (120) closes the lower portion of the small-diameter portion (111) by the resilient force when the pressurization of the small-diameter portion (101) is released.

The operation member 140 is rotatably seated in the receiving groove 122 of the opening and closing member 120 and is engaged with the small diameter portion 111 of the filler neck housing 110 when the diesel oil injecting gun 101 is inserted into the small- And is rotated when the diesel injector 101 is pressed by the diesel injector 101 to push the opening and closing member 120 downward (Fig. 7).

The operation member 140 is formed so that a rib is protruded from the edge of the disk and is seated in the receiving groove 122 and can be rotated at a certain angle in the receiving groove 122 by the pressure of the diesel oiling gun 101. The operation member 140 protrudes from the lower edge toward the center to form a seating portion 141 on which a locking member 150 to be described later is seated. The seat portion 141 is also formed in a ring shape, and a return member 160, which will be described later, is passed through the center of the seat portion 141.

The operation member 140 includes coupling projections 142 protruding from both sides of the outer circumference and coupled to the guide grooves 112 formed on the inner surface of the pillar neck housing 110, And is configured to be able to be moved in the guide groove 112 when the operation member 140 is pushed by the key 101 and rotated in the receiving groove 122.

The locking member 150 is formed at its center with a fitting hole to be fitted in the fitting boss 126 of the opening and closing member 120. The lower end of the fitting hole is protruded toward the center to hold the head of a fastening member 170 The seating surface 141 is formed. That is, when the head of the fastening member 170 is seated on the seating surface 141, the seating surface 141 is engaged with the bottom surface of the fastening member 170, Thereby preventing the head from being deviated upward.

The locking member 150 is elastically supported by a return member 160 to be described later and is spaced apart from the seat 141 of the actuating member 140. When the actuating member 140 is pressed by the gasoline injecting gun 102, And the rotation of the operation member 140 is prevented from rotating in the receiving groove 122 to prevent the opening and closing member 120 from being opened.

The locking mechanism includes at least one locking protrusion 153 protruding from the locking member 150 toward the operating member 140 and a locking groove 143 formed in the operating member 140 and corresponding to the locking protrusion 153 .

At least one locking groove 143 is formed in the seating portion 141 of the actuating member 140. When the locking member 150 is pressed by the gasoline filling gun 102 and is seated in the seating portion 141, the locking groove 153 is engaged with the locking projection 153 to move the operating member 140 in the receiving groove 141. [ (Not shown).

The locking protrusion 153 is formed on the bottom surface of the locking member 150 at the position corresponding to the locking groove 143 toward the actuating member 140 and is formed in the same number as the locking groove 143.

The locking mechanism is provided between the opening and closing member 120 and the locking member 150 so that the locking member 150 which is seated on the operating member 140 by the pressure of the gasoline injecting gun 102, And return member 160 for returning to the original position by spacing.

The lower end of the return member 160 is fitted in the fitting groove of the opening and closing member 120 and the upper end of the locking member 150 elastically supports the bottom surface of the seating surface 151 of the locking member 150, (Not shown). That is, when the locking member 150 is pressed by the gasoline injection gun 102 to be seated in the seating portion 141 of the actuating member 140 and the pressurization of the gasoline injecting gun 102 is released Thereby restoring the locking member 150 to its original position.

One end of the coil spring as the return member 160 is supported by the opening and closing member 120 and the tart is supported by the bottom surface of the locking member 150. When the locking member 150 is pressed by the gasoline injecting gun 102 So as to generate an elastic force.

A straight portion 152 is formed in the through hole 110a of the locking member 150 to prevent the locking member 150 from rotating when the locking member 150 is pressed by the gasoline filling gun 102, The flat surface portion 126a is formed on the outer circumferential surface of the fastening boss 126 of the opening and closing member 120 so as to correspond to the fastening boss 152.

The operation of the pillar neck device of the automotive fuel system according to one embodiment of the present invention having the above-described structure will be briefly described.

First, the state of the pillar neck device before the vehicle is fed is as follows.

The opening and closing member 120 hinged to the inside of the pillar neck housing 110 blocks the lower side of the small diameter portion 111 of the pillar neck housing 110 by the elastic member 130 so that fuel does not enter through the pumping hole have.

At this time, the operation member 140 has the engagement protrusion 142 inserted into the slide groove 125 of the opening and closing member 120 and fitted in the upper portion of the guide groove 112, and the receiving groove 122 of the opening and closing member 120, As shown in Fig. The locking member 150 is resiliently supported by the return member 160 to be spaced apart from the seating portion 141 of the actuating member 140 and the seating surface 141 is supported by the head of the coupling member 170 State.

Thereafter, when fuel (diesel) is injected into the vehicle, the passenger inserts the diesel injector 101 into the filler neck housing 110.

Then, the diesel injector 101 presses the upper surface edge of the operation member 140. At this time, the operation member 140 moves the coupling protrusion 142 from the slide groove 125 of the opening and closing member 120 and the guide groove 112 of the pillar neck housing 110 by the pressure of the diesel oiling gun 101 And is rotated by a certain angle in the receiving groove 122. That is, when the engaging protrusion 142 of the actuating member 140 inserted in the upper portion of the guide groove 112 is moved along the guide groove 112 to the lower portion of the guide groove 112, The pin member 124 rotates around the pin member 124 to open the lower portion of the small diameter portion 111 of the pillar neck housing 110.

As the lower portion (through hole) of the small neck portion 111 of the filler neck housing 110 is opened, the fuel discharged from the diesel injector 101 enters the fuel tank (not shown).

When the filling is completed and the owner removes the diesel injector 101 from the filler neck housing 110, the opening and closing member 120 is pushed toward the inside of the filler neck housing 110 by the elastic member 130 The opening and closing member 120 is rotated in the home position by the elastic force. The engaging protrusion 142 of the actuating member 140 inserted in the lower portion of the guide groove 112 is moved upward along the guide groove 112 and is slid in the accommodating groove 122 of the opening and closing member 120 The operating member is rotated in the opposite direction in the receiving groove portion. The opening and closing member 120 contacts the lower portion of the small diameter portion 111 of the pillar neck housing 110 to prevent fuel or foreign matter from entering the fuel tank through the pillar neck housing 110.

8 and 9, the operation of the pillar neck device 100 when the gasoline injector 102 is inserted into the pillar neck housing 110 without recognizing the pillar as a diesel vehicle will be described .

So that the customer inserts the gasoline filling gun 102 into the filler neck housing 110. At this time, the locking member 150 is lowered so that the bottom surface of the locking member 150 is engaged with the seating portion 141 of the actuating member 140. As a result, the gasoline main gun 102 presses the upper surface edge of the locking member 150, Lt; / RTI >

The locking protrusion 153 of the locking member 150 is fitted in the locking groove 143 of the actuating member 140 so that the gasoline inflow The operating member 140 is not rotated in the receiving groove portion 122 of the opening and closing member 120 even when the key 102 is pressed. That is, as the operating member 140 is not rotated in the receiving groove 122, the engaging protrusion 142 of the operating member 140 is supported on the upper portion of the guide groove 112 so that the opening and closing member 120 is not rotated The pillar neck housing 110 is brought into contact with the lower portion of the small neck portion 111 of the pillar neck housing 110 to keep the pillar neck housing 110 closed so that the fuel is prevented from entering the fuel tank even if the fuel is discharged from the gasoline pouring gun 102 will be.

Thereafter, when the customer removes the gasoline injecting gun 102 from the filler neck housing 110, the locking member 150 pressed by the gasoline filling gun 102 is raised by the elastic force of the return member 160, .

When the diesel particulate filter 101 is inserted into the filler neck housing 110, the filler neck device 100 of the automotive fuel system opens the filler neck housing 110 to open the filler neck housing 110 to the fuel tank The locking member 150 locks the opening and closing member 120 and closes the pillar neck housing 110 so that the gasoline infusion gun 102 It is possible to prevent the occurrence of the residual oil in advance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100: Filler neck device
101: Diesel injection gun 102: Gasoline injection gun
110: filler neck housing 110a: through hole
111: small diameter portion 112: guide groove
120: open / close member 121: protruding rib
122: receiving groove 123: hinge projection
124: pin member 125: slide groove
126: fastening boss 126a:
127: support projection
130: elastic member
140: operation member 141:
142: engaging projection 143: locking groove
150: locking member 151: seating face
152: straight line portion 153: locking projection
160: return member
170: fastening member

Claims (9)

A filler neck housing having a through hole through which both ends thereof pass, and guide grooves formed in opposite directions on opposite side inner circumferential surfaces;
An opening / closing member having a receiving groove portion and hinged to the filler neck housing for opening / closing the through hole;
An elastic member for elastically supporting the opening and closing member on the inner peripheral surface of the pillar neck housing;
An operating member rotatably mounted on the receiving groove and rotatably received in the receiving groove when pressed by the diesel particulate filter fitted in the through hole and having an engaging projection that moves along the guide groove;
A locking member spaced apart from the operating member;
And a locking mechanism for preventing the opening and closing member from opening the through hole by preventing the operating member from rotating while the locking member being pressed when the gasoline filling gun is inserted into the through hole is seated on the operating member,
When the diesel oil gun is inserted into the pillar neck housing and presses the operating member, when the engaging projection moves along the guide groove, the operating member is rotated in the receiving groove to push the opening and closing member downward to open the through hole. Filler neck devices for automotive fuel systems. The method according to claim 1,
The filler neck housing,
Wherein the small-diameter portion is formed on the inner circumferential surface of the small-diameter portion, the diameter of which is smaller than the diameter of the injection port into which the main gun is inserted, and is opened and closed by the opening and closing member. The method of claim 2,
The opening /
And a hinge protrusion fixed to an inner peripheral surface of the pillar neck housing by a pin member is protruded from the outer peripheral surface of the pillar neck housing. The method according to claim 1,
Further comprising a fastening member coupled to the opening and closing member after penetrating the locking member to prevent the locking member from being disengaged. The method of claim 4,
The opening /
And a fastening boss having a fastening groove into which the fastening member is screwed is formed in the receiving groove. The method according to claim 1,
The elastic member,
And a torsion spring which is supported by the filler neck housing and whose other end is supported by the opening and closing member so that an elastic force generated when the opening and closing member opens the through hole acts to close the through hole. Neck device. The method according to claim 1,
The locking mechanism,
At least one locking protrusion protruding from the locking member toward the operation member;
A locking groove formed in the operation member and corresponding to the locking projection;
Wherein the filler neck device comprises: The method of claim 7,
The locking mechanism,
And a coil spring provided between the opening and closing member and the locking member for returning the locking member, which is seated on the operating member by the pressure of the gasoline filling gun, to the original position by separating the locking member from the operating member, Neck device. The method of claim 8,
The coil spring,
Wherein one end is supported on the opening and closing member and the tart is supported on the bottom surface of the locking member and is configured to generate an elastic force when the locking member is pressed by the gasoline filling gun.

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