Structural of lidless filler neck

Abstract

A capless filler neck structure includes: a filler pipe, which is configured to be fixed in a vehicle and defines a delivery channel for delivering fuel to a fuel tank of the vehicle; a first retainer, which is assembled into the filler pipe; a first flap, which is positioned adjacent to the first retainer to be sealed relative to the outside; a second retainer, which is positioned adjacent to the first retainer and assembled into the filler pipe; a cover, which is assembled into the second retainer to define an opening configured to receive a fuel gun; the second flap, which is positioned adjacent to the second retainer to be sealed relative to the outside; and an anti-misinjection member, which is assembled into the second retainer and configured to be unlocked when a fuel gun having a predetermined diameter or larger is inserted.

Description

Technical Field

[0001] The present disclosure relates to a capless filler neck structure. Background Art

[0002] Generally, a vehicle includes a fuel tank storing fuel required for engine combustion and a fuel filler neck for fuel filling provided at an end of a fuel supply pipe connected to the fuel tank.

[0003] The top or inlet end of the fuel supply pipe is usually formed to receive a fuel cap that is removed only during the refueling process. However, there is not only the risk of losing the fuel cap, but also the disadvantage that the user needs to additionally remove and lock the fuel cap for self-service refueling at a self-service gas station.

[0004] Therefore, there is a need for a capless fuel system that does not require a fuel cap to close the fuel supply pipe.

[0005] Meanwhile, the diameter of a fuel gun for injecting fuel into a fuel filler neck and a fuel filling speed vary depending on gasoline or diesel fuel.

[0006] Generally, a diesel fuel gun for injecting diesel fuel has a larger diameter than a gasoline fuel gun for injecting gasoline fuel, and thus a fuel filler neck of a diesel vehicle has a larger diameter than that of a gasoline vehicle.

[0007] For example, a diesel fuel gun has a diameter of approximately 25 to 31 mm, a gasoline fuel gun has a diameter of approximately 19 to 21 mm, a gasoline vehicle fuel filler neck has a diameter of approximately 22 mm, and a diesel vehicle fuel filler neck has a diameter of approximately 26 to 32 mm.

[0008] Therefore, because only gasoline fuel guns can be inserted into gasoline vehicles, and diesel fuel guns cannot, mis-injection of fuel may not occur in gasoline vehicles. However, because both gasoline and diesel fuel guns can be inserted into diesel vehicles, mis-injection of fuel may occur frequently in diesel vehicles. Such mis-injection of fuel may not only reduce engine output and damage the engine itself, but may also cause the engine to stop during operation, potentially leading to a serious accident and damaging fuel system equipment, such as the injection pump.

[0009] Furthermore, even if the mis-injection prevention structure were applied to the existing capless structure, a sealing structure that could prevent foreign matter from entering the fuel tank or prevent evaporated gas generated in the fuel tank from escaping to the outside could not be applied. Therefore, it was necessary to develop a capless filler neck structure that not only had a sealing function in addition to the existing mis-injection prevention structure, but also had a sealing function.

[0010] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0011] Embodiments of the present disclosure solve problems associated with the prior art.

[0012] The present disclosure relates to a capless filler neck structure. Detailed description relates to a capless filler neck structure that can perform a sealing function even without a fuel cap and simultaneously prevent erroneous injection of fuel.

[0013] In one aspect, an embodiment of the present disclosure provides a capless filler neck structure including a mis-injection prevention member composed of a shutter that moves in three directions.

[0014] In another aspect, one embodiment of the present disclosure provides a capless filler neck structure with dual sealing flaps.

[0015] The present disclosure is not limited to the above aspects, and other aspects and advantages of the present disclosure can be understood through the following description and become apparent with reference to the embodiments of the present disclosure. Moreover, it is obvious to those skilled in the art that the aspects and advantages of the present disclosure can be achieved by the devices as claimed and combinations thereof.

[0016] The above and other aspects can be achieved by providing a capless filler neck structure.

[0017] A capless filler neck structure is provided, comprising: a filler pipe, which is fixed in a vehicle and defines a delivery channel for allowing fuel to be delivered to a fuel tank of the vehicle; a first retainer, which is assembled into the filler pipe; a first flap, which is positioned adjacent to the first retainer to be sealed relative to the outside; a second retainer, which is positioned adjacent to the first retainer and assembled into the filler pipe; a cover, which is assembled into the second retainer to define an opening for inserting a fuel gun; the second flap, which is positioned adjacent to the second retainer to be sealed relative to the outside; and an anti-misinjection member, which is assembled into the second retainer and is unlocked when a fuel gun having a predetermined diameter or larger is inserted.

[0018] The first flap may include a first seal forming an outer peripheral surface of the first flap, and a first hinge spring hinged to the first flap so that when the fuel gun is inserted into the first flap, the first flap opens upward.

[0019] The second flap may include a second seal forming an outer peripheral surface of the second flap, and a second hinge spring hinged to the second flap so that the second flap opens upward when the fuel gun is inserted into the second flap.

[0020] The anti-error injection component may include: a first baffle and a second baffle, which face each other and are spaced apart from each other in a width direction of the anti-error injection component, and when a fuel gun having a predetermined diameter or larger is inserted, the first baffle and the second baffle move in a direction away from each other; and a third baffle positioned in a lower space between the first baffle and the second baffle to be locked to the first baffle and the second baffle, and the third baffle is unlocked when a fuel gun having a predetermined diameter or larger is inserted so as to be able to move toward the outside of the outer peripheral surface of the fuel gun.

[0021] The erroneous injection prevention member may include a spring formed at one end of each of the first to third shutters, the spring being elastically supported by the second holder.

[0022] The first baffle may have a first latching protrusion formed to be locked to one end of the third baffle. The second baffle may have a second latching protrusion formed to be locked to the other end of the third baffle. The third baffle may have a first latching groove formed at one end thereof and having a shape corresponding to the first latching protrusion, and a second latching groove formed at the other end thereof and having a shape corresponding to the second latching protrusion.

[0023] When a fuel gun having a predetermined diameter or larger is inserted, the distance between the first baffle and the second baffle can be increased, and the first latch protrusion and the second latch protrusion can be unlocked from the first latch groove and the second latch groove, so that the third baffle can be moved downward.

[0024] The third flap may have a third latch protrusion formed to be locked to the second flap, and the second flap may have a flap latch groove formed to have a shape corresponding to the third latch protrusion.

[0025] When the third flap moves downward, the third latch protrusion may be unlocked from the flap latch groove, so that the second flap is opened upward by the tension of the fuel gun applied thereto.

[0026] When a fuel gun having a predetermined diameter or larger is inserted, the first flap can be opened upward around the first hinge spring by tension applied to the first flap in the closed state, and the second flap can be opened upward around the second hinge spring by tension applied to the second flap in the closed state.

[0027] Other aspects and preferred embodiments of the disclosure are discussed below.

[0028] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein include general motor vehicles, such as passenger cars (including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles), watercraft (including various ships and vessels), aircraft, etc., and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuels derived from resources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle having two or more power sources, such as a gasoline-powered vehicle and an electric-powered vehicle.

[0029] The above and other features of the present disclosure are discussed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other features of the present disclosure will now be described in detail with reference to certain exemplary embodiments of the disclosure as shown in the accompanying drawings, which are given hereinafter by way of illustration only and therefore do not limit the present disclosure, and in which:

[0031] Figure 1 is a perspective view showing a capless filler neck structure according to an embodiment of the present disclosure;

[0032] Figure 2 is a view showing the configuration of a capless filler neck structure according to an embodiment of the present disclosure;

[0033] Figure 3 is a view showing the configuration of a first flap and a second flap of a capless filler neck structure according to an embodiment of the present disclosure;

[0034] Figure 4 is a view showing that the first flap and the second flap are closed in the structure of the capless filler neck according to the embodiment of the present disclosure;

[0035] Figure 5 is a view showing an erroneous injection prevention member of a capless filler neck structure according to an embodiment of the present disclosure;

[0036] Figure 6A is an enlarged view showing a second baffle of a capless filler neck structure according to an embodiment of the present disclosure; and

[0037] Figure 6B is a cross-sectional view illustrating a mis-injection prevention member of a capless filler neck structure according to an embodiment of the present disclosure.

[0038] It should be understood that the accompanying drawings are not necessarily to scale, and that they present a somewhat simplified representation of various preferred features illustrating the basic principles of the present disclosure. The specific design features of the embodiments of the present disclosure as disclosed herein (including, for example, specific dimensions, orientations, locations, and shapes) will be determined in part by the specific intended application and use environment.

[0039] In the drawings, reference numbers refer to the same or equivalent parts of embodiments of the present disclosure throughout the several figures of the drawing. DETAILED DESCRIPTION

[0040] Reference will now be made in detail hereinafter to various embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings and described below. Although the present disclosure will be described in conjunction with exemplary embodiments, it will be understood that this description is not intended to limit the present disclosure to those exemplary embodiments. On the contrary, the present disclosure is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments that may be included within the spirit and scope of the present disclosure as defined by the appended claims.

[0041] In addition, the term "component" and the like described herein refer to a unit for processing at least one function or operation, which can be implemented by hardware or software or a combination thereof.

[0042] In addition, the terms first, second, etc. used herein are intended to distinguish names of components having the same relationship to each other, and are not necessarily limited to those in the following description.

[0043] In addition, the term "downward" used herein refers to a downward direction based on the side from which the fuel gun is inserted.

[0044] Figure 1 is a perspective view illustrating a capless filler neck structure according to an embodiment of the present disclosure. Figure 2 is a view illustrating the configuration of a capless filler neck structure according to an embodiment of the present disclosure.

[0045] refer to Figure 1 and Figure 2, a capless filler neck structure according to an embodiment of the present disclosure includes: a filler pipe 100, which is fixed in a vehicle and defines a delivery channel for allowing fuel to be delivered to a fuel tank of the vehicle; a first retainer 200, which is assembled into the filler pipe 100; a first flap 300, which is positioned adjacent to the first retainer 200 to be sealed relative to the outside; a second retainer 400, which is positioned adjacent to the first retainer 200 and assembled into the filler pipe 100; a cover 500, which is assembled into the second retainer 400 to define an opening for inserting a fuel gun; a second flap 600, which is positioned adjacent to the second retainer 400 to be sealed relative to the outside; and an anti-error injection member 700, which is assembled into the second retainer 400 and is unlocked when a fuel gun having a predetermined diameter or larger is inserted.

[0046] Filler pipe 100 may be fixed to a vehicle and define a delivery passage for allowing fuel to be delivered to a fuel tank of the vehicle. A fuel gun may be inserted and fixed to filler pipe 100 from the outside, and filler pipe 100 may define an inflow path of fuel from the fuel gun.

[0047] One end of the filler pipe 100 may be connected to the fuel tank of the vehicle through a pipe. The other end of the filler pipe 100 may be exposed from the fuel inlet of the vehicle body. The fuel introduced into the filler pipe 100 may be guided to the fuel tank through the pipe.

[0048] The first retainer 200 may be assembled into the filler pipe 100. The first retainer 200 may be assembled near the other end of the filler pipe 100. The first retainer 200 may be a fuel injection passage. In addition, the first retainer 200 may allow evaporated gas in the fuel tank to be discharged to the outside when a fuel gun is inserted for fuel filling.

[0049] The first flap 300 may be positioned adjacent to the first retainer 200 to seal against the outside. The first flap 300 may be positioned near the other end of the filler pipe 100, and one end of the first flap 300 may be fixed to the first retainer 200. The first flap 300 may be opened by rotating the other end around the one end fixed to the first retainer 200.

[0050] The second retainer 400 may be positioned adjacent to the first retainer 200 and assembled into the filler pipe 100. The second retainer 400 may be assembled near one end of the filler pipe 100. The second retainer 400 may function as a fuel injection passage together with the first retainer 200. In addition, the second retainer 400 may allow evaporated gas in the fuel tank to be discharged to the outside when a fuel gun is inserted for fuel filling.

[0051] The cover 500 can be assembled to the second retainer 400 to define an opening for inserting the fuel gun. After the first flap 300 is opened due to the insertion of the fuel gun, the cover 500 can guide the fuel gun to the center of the filler pipe 100. The fuel gun can be inserted through the front of the cover 500, and the anti-injection member 700 and the second flap 600 can be sequentially formed on the rear of the cover 500.

[0052] The second flap 600 may be positioned adjacent to the second retainer 400 to seal against the outside. The second flap 600 may be positioned near one end of the filler pipe 100, and a first end of the second flap 600 may be fixed to the second retainer 400. The second flap 600 may be opened by rotating its second end about its first end fixed to the second retainer 400. The second flap 600 may be spaced apart from the first flap 300 to perform a dual sealing function.

[0053] The anti-error injection member 700 can be assembled to the second retainer 400 and unlocked when a fuel gun having a predetermined diameter or larger is inserted. The anti-error injection member 700 can be positioned near one end of the filling pipe 100 so as to be positioned between the second flap 600 and the cover 500. The anti-error injection member 700 can be easily fixed to the second retainer 400 by a spring 740.

[0054] The erroneous injection prevention member 700 may not be unlocked in the case of inserting a fuel gun having a predetermined diameter or smaller (for example, in the case of inserting a gasoline fuel gun), but may be unlocked in the case of inserting a diesel fuel gun.

[0055] Figure 3 1 is a view illustrating the configuration of a first flap 300 and a second flap 600 of a capless filler neck structure according to an embodiment of the present disclosure.

[0056] refer to Figure 3 The first flap 300 may include a first sealing member 310 forming an outer circumferential surface thereof and a first hinge spring 320 hinged thereto so that the first flap 300 opens upward when the fuel gun is inserted therein. Furthermore, the second flap 600 may include a second sealing member 610 forming an outer circumferential surface thereof and a second hinge spring 620 hinged thereto so that the second flap 600 opens upward when the fuel gun is inserted therein.

[0057] A conventional filler neck with a fuel cap is constructed so that when the fuel gun presses the left and right flaps during insertion, a flap connected to the flaps moves integrally therewith. The flap opens by applying tension from the fuel gun, thereby preventing erroneous fuel injection. In this case, the fuel cap serves as a protective function against the inflow of foreign matter, while the flap acts as a channel for injected fuel.

[0058] The capless filler neck structure according to an embodiment of the present disclosure can prevent foreign matter from flowing in from the outside and prevent evaporated gas generated in the fuel tank from flowing out through double sealing. For user convenience, the first flap 300 and the second flap 600, which are internal components of the filler neck, can be used as seals instead of the traditional fuel cap.

[0059] The first flap 300 may have a first seal 310 formed on its outer circumferential surface. The first seal 310 may form a contact surface against which tension is applied during the fuel gun insertion process. Furthermore, the first flap 300 may include a first hinge spring 320 hinged thereto, allowing the first flap 300 to open upward when the fuel gun is inserted therein. The first flap 300 can be opened by rotating about the first hinge spring 320. When the fuel gun is separated from the first flap 300, the first flap 300 can return to its initial closed position due to the elastic force of the first hinge spring 320.

[0060] The second flap 600 may have a second seal 610 formed on its outer circumferential surface. The second seal 610 may form a contact surface against which tension is applied during the fuel gun insertion process. Furthermore, the second flap 600 may include a second hinge spring 620 hinged thereto, which allows the second flap 600 to open upward when the fuel gun is inserted therein. The second flap 600 can be opened by rotating about the second hinge spring 620. When the fuel gun is separated from the second flap 600, the second flap 600 can return to its initial closed position due to the elastic force of the second hinge spring 620.

[0061] The first flap 300 and the second flap 600 may be spaced apart from each other in the filling pipe 100 to perform a double sealing function.

[0062] Figure 4 1 is a view showing that the first flap 300 and the second flap 600 are closed in the structure of the capless filler neck according to the embodiment of the present disclosure.

[0063] refer to Figure 4 , the capless filler neck structure according to an embodiment of the present disclosure can be constructed so that when a fuel gun having a predetermined diameter or larger is inserted, the first flap 300 opens upward around the first hinge spring 320 by the tension applied to the closed first flap 300, and the second flap 600 opens upward around the second hinge spring 620 by the tension applied to the closed second flap 600.

[0064] The capless filler neck structure can be configured such that, when a fuel gun having a diameter smaller than a predetermined diameter is inserted, the first flap 300 is opened upward by the tension applied to the closed first flap 300, while the second flap 600 is not opened. Since the second flap 600 is prevented from opening by the mis-injection prevention member 700 even if the tension from the fuel gun is applied to the second flap 600, the accidental entry of fuel into the vehicle can be prevented.

[0065] When a fuel gun having a predetermined diameter or larger is inserted, the first flap 300 may open upward around the first hinge spring 320. When the fuel gun continues to apply tension to the closed second flap 600 with the first flap 300 open, the second flap 600 may open upward around the second hinge spring 620.

[0066] During the insertion of the fuel gun, the first hinge spring 320 can maintain its elastic force so that the first flap 300 remains open. Similarly, during the insertion of the fuel gun, the second hinge spring 620 can maintain its elastic force so that the second flap 600 remains open.

[0067] When the fuel gun having a predetermined diameter or larger is separated, the second flap 600 can return to its initial closed state by the elastic restoring force of the second hinge spring 620. Subsequently, the first flap 300 can return to its initial closed state by the elastic restoring force of the first hinge spring 320.

[0068] Figure 5 is a view illustrating a mis-injection prevention member 700 of a capless filler neck structure according to an embodiment of the present disclosure. Figure 6A yes Figure 5 FIG. 1 is an enlarged view of portion “A” of FIG. 1 , showing a second baffle of a capless filler neck structure according to an embodiment of the present disclosure.

[0069] refer to Figure 5 The erroneous injection prevention member 700 according to an embodiment of the present disclosure may include a first baffle 710 and a second baffle 720 that are spaced apart from each other while facing each other in the width direction of the erroneous injection prevention member 700 and move in a direction away from each other when a fuel gun having a predetermined diameter or larger is inserted. In addition, the erroneous injection prevention member 700 may include a third baffle 730 that is positioned in the lower space between the first baffle 710 and the second baffle 720 to be locked to the first baffle 710 and the second baffle 720, and is unlocked when a fuel gun having a predetermined diameter or larger is inserted so as to be movable toward the outside of the outer peripheral surface of the fuel gun.

[0070] In addition, the erroneous injection prevention member 700 may include a spring 740 formed at one end of each of the first to third flaps 710 to 730 and elastically supported by the second holder 400 .

[0071] The first and second flappers 710 and 720 may be spaced apart from each other in a width direction of the erroneous injection prevention member 700. A spring 740 may be fixedly mounted to one end of each of the first and second flappers 710 and 720 and elastically supported by the second holder 400.

[0072] When a fuel gun having a predetermined diameter or larger is inserted, the first baffle 710 and the second baffle 720 can move in a direction away from each other. When a fuel gun having a larger distance than the distance between the other ends of the first baffle 710 and the other ends of the second baffle 720 is inserted, the first baffle 710 and the second baffle 720 can move toward the outside of the outer peripheral surface of the fuel gun due to the tension of the fuel gun applied thereto.

[0073] The third baffle 730 may be positioned in a lower space between the first baffle 710 and the second baffle 720. The third baffle 730 may remain locked to the first baffle 710 and the second baffle 720 when the first baffle 710 and the second baffle 720 do not move.

[0074] The spring 740 may be fixedly mounted to one end of the third baffle 730 and elastically supported by the second holder 400. When tension of the fuel gun is applied to the other end of the third baffle 730, the spring 740 at one end of the third baffle 730 may be compressed, causing the third baffle 730 to move downward.

[0075] The second flap 600 of the embodiment of the present disclosure can be coupled to the anti-misinjection member 700 to prevent erroneous injection of fuel, and can be fixedly mounted to the second retainer 400 to perform a sealing function.

[0076] To this end, the mis-injection prevention member 700 can move in three directions. The first baffle 710 and the second baffle 720 may not be connected to the second flap 600. When inserting a fuel gun having a predetermined diameter or larger, the first baffle 710 and the second baffle 720 may first move away from each other. In this case, the second flap 600 may be locked to the third baffle 730 to prevent movement. Subsequently, when the third baffle 730 moves downward, the second flap 600 may open.

[0077] In the capless filler neck structure according to an embodiment of the present disclosure, the first flap 710 may have a first latching protrusion 711 formed to be locked to one end of the third flap 730, and the second flap 720 may have a second latching protrusion 721 formed to be locked to the other end of the third flap 730. Accordingly, the third flap 730 may have a first latching groove 731 formed at one end thereof and having a shape corresponding to the first latching protrusion 711, and a second latching groove 732 formed at the other end thereof and having a shape corresponding to the second latching protrusion 721.

[0078] When a fuel gun having a predetermined diameter or larger is inserted, the distance between the first baffle 710 and the second baffle 720 can be increased, and the first latch protrusion 711 and the second latch protrusion 721 can be unlocked from the first latch groove 731 and the second latch groove 732, so that the third baffle 730 can move downward.

[0079] refer to Figure 6A , the first latch protrusion 711 may have a shape corresponding to the first latch groove 731. Likewise, the second latch protrusion 721 may have a shape corresponding to the second latch groove 732. Thus, the third baffle 730 may be locked to the first baffle 710 and the second baffle 720.

[0080] When a fuel gun having a predetermined diameter or larger is inserted, the distance between the first baffle plate 710 and the second baffle plate 720 may increase. As a result, the first latch protrusion 711 may be separated from the first latch groove 731, and the second latch protrusion 721 may be separated from the second latch groove 732. Subsequently, when the fuel gun applies tension to the third baffle plate 730, the third baffle plate 730 may move downward.

[0081] Figure 6B It is along Figure 5 A cross-sectional view taken along line BB of FIG. 1 shows an erroneous injection prevention member 700 of a capless filler neck structure according to an embodiment of the present disclosure.

[0082] refer to Figure 6B In the capless filler neck structure according to an embodiment of the present disclosure, the third flap 730 may have a third latch protrusion 733 formed to be locked to the second flap 600, and the second flap 600 may have a flap latch groove 630 formed to have a shape corresponding to the third latch protrusion 733.

[0083] When the third flap 730 moves downward, the third latch protrusion 733 may be unlocked from the flap latch groove 630 , so that the second flap 600 is opened upward by the tension of the fuel gun applied thereto.

[0084] Since the third latch protrusion 733 has a shape corresponding to the flap latch groove 630, the second flap 600 can remain locked even when tension from the fuel gun is applied thereto. In the case of inserting a fuel gun having a diameter smaller than a predetermined diameter, even if tension is applied to the front portion of the second flap 600, the second flap 600 cannot be opened upward because the third latch protrusion 733 is latched to the flap latch groove 630.

[0085] When a fuel gun having a predetermined diameter or larger is inserted, the third latch protrusion 733 can be separated from the flap latch groove 630 while the third stopper 730 moves downward. Therefore, the second flap 600 can be rotated upward and opened by the tension of the fuel gun applied thereto.

[0086] In summary, the capless filler neck structure of the embodiment of the present disclosure includes the mis-injection prevention member 700 consisting of the first to third flaps 710, 730 that move in three directions, and has a double sealing structure in which the first flap 300 and the second flap 600 are spaced apart from each other. Therefore, even in the absence of a fuel cap, mis-injection of fuel can be prevented while performing a sealing function.

[0087] As is apparent from the above description, the present disclosure can obtain the following effects through the configurations, combinations, and relationships of the components described in the exemplary embodiments.

[0088] Since the capless filler neck structure includes a mis-injection prevention member composed of a baffle that moves in three directions, the capless filler neck structure can prevent mis-injection of fuel.

[0089] The capless filler neck structure can perform a sealing function even without a fuel cap because it includes dual sealing flaps.

[0090] The above detailed description is an illustration of the present disclosure. In addition, the above description is intended to illustrate and explain the preferred embodiments of the present disclosure, and the present disclosure may be used in various other combinations, modifications and environments. That is, changes or modifications may be made within the scope of the concepts of the disclosure disclosed herein, within the scope of the disclosure and / or within the technology and knowledge in the art. The described embodiments are intended to illustrate the best mode for carrying out the technical ideas of the present disclosure, and various changes may be made in the specific applications and uses of the present disclosure. Therefore, the detailed description of the present disclosure is not intended to limit the present disclosure to the disclosed embodiments. It should also be understood that the appended claims are intended to cover these other embodiments.

Claims

1. A capless filler neck structure comprising: a filler pipe configured to be secured in a vehicle and defining a delivery passage for delivering fuel to a fuel tank of the vehicle; a first retainer assembled into the filler pipe; a first flap positioned adjacent to the first retainer to seal relative to the exterior; a second retainer positioned adjacent to the first retainer and fitted into the filler tube; a cover assembled to the second retainer to define an opening configured to receive a fuel gun; a second flap positioned adjacent to the second retainer to seal against the exterior; as well as a mis-injection prevention member assembled to the second holder and configured to be unlocked when the fuel gun having a predetermined diameter or larger is inserted; Wherein, the anti-error injection component includes: a first baffle and a second baffle, the first baffle and the second baffle facing each other in a width direction of the erroneous injection prevention member while being spaced apart from each other, the first baffle and the second baffle being configured to move in a direction away from each other when the fuel gun having a predetermined diameter or larger is inserted; a third baffle positioned in a lower space between the first baffle and the second baffle and configured to be locked to the first baffle and the second baffle, the third baffle configured to be unlocked when the fuel gun having a predetermined diameter or larger is inserted so as to be movable toward the outside of the outer peripheral surface of the fuel gun; and A spring is formed at one end of each of the first baffle, the second baffle, and the third baffle, the spring being elastically supported by the second holder.

2. The capless filler neck structure according to claim 1, wherein: The first flap comprises: a first sealing member forming an outer peripheral surface of the first flap; and A first hinge spring is hinged to the first flap so that the first flap is configured to open upward when the fuel gun is inserted.

3. The capless filler neck structure according to claim 2, wherein: The second flap includes: a second sealing member forming an outer peripheral surface of the second flap; and A second hinge spring is hinged to the second flap so that the second flap is configured to open upward when the fuel gun is inserted.

4. The capless filler neck structure according to claim 1, wherein: the first flap having a first latch protrusion formed to lock to a first end of the third flap; The second flap has a second latch protrusion formed to lock to a second end of the third flap; and The third shutter plate has a first latching groove formed at a first end of the third shutter plate and having a shape corresponding to the first latching protrusion, and a second latching groove formed at a second end of the third shutter plate and having a shape corresponding to the second latching protrusion.

5. The capless filler neck structure according to claim 4, wherein: When the fuel gun having a predetermined diameter or larger is inserted, the distance between the first baffle and the second baffle increases, and the first latch protrusion is configured to be unlocked from the first latch groove, and the second latch protrusion is configured to be unlocked from the second latch groove, so that the third baffle can move downward.

6. The capless filler neck structure according to claim 1, wherein: The third flap has a third latching protrusion formed to be locked to the second flip, and the second flip has a flip latching groove formed to have a shape corresponding to the third latching protrusion.

7. The capless filler neck structure according to claim 6, wherein: When the third flap moves downward, the third latch protrusion is configured to be unlocked from the flap latch groove so that the second flap is opened upward by tension of the fuel gun applied to the second flap.

8. The capless filler neck structure according to claim 3, wherein: When the fuel gun having a predetermined diameter or larger is inserted, the first flap is configured to open upward around the first hinge spring by tension applied to the first flap in a closed state, and the second flap is configured to open upward around the second hinge spring by tension applied to the second flap in a closed state.

9. A vehicle comprising: body; a fuel tank located within the vehicle body; a filler pipe secured in the vehicle body and configured to define a delivery passage for delivering fuel to the fuel tank; a first retainer assembled into the filler pipe; a first flap positioned adjacent to the first retainer to seal relative to the exterior; a second retainer positioned adjacent to the first retainer and fitted into the filler tube; a cover assembled to the second retainer to define an opening configured to receive a fuel gun; a second flap positioned adjacent to the second retainer to seal against the exterior; as well as a mis-injection prevention member assembled to the second holder and configured to be unlocked when the fuel gun having a predetermined diameter or larger is inserted; Wherein, the anti-error injection component includes: a first baffle and a second baffle, the first baffle and the second baffle facing each other in a width direction of the erroneous injection prevention member while being spaced apart from each other, the first baffle and the second baffle being configured to move in a direction away from each other when the fuel gun having a predetermined diameter or larger is inserted; a third baffle positioned in a lower space between the first baffle and the second baffle and configured to be locked to the first baffle and the second baffle, the third baffle configured to be unlocked when the fuel gun having a predetermined diameter or larger is inserted so as to be movable toward the outside of the outer peripheral surface of the fuel gun; and A spring is formed at one end of each of the first baffle, the second baffle, and the third baffle, the spring being elastically supported by the second holder.

10. The vehicle according to claim 9, wherein The first flap comprises: a first sealing member forming an outer peripheral surface of the first flap; and A first hinge spring is hinged to the first flap so that the first flap is configured to open upward when the fuel gun is inserted.

11. The vehicle according to claim 10, wherein: The second flap includes: a second sealing member forming an outer peripheral surface of the second flap; and A second hinge spring is hinged to the second flap so that the second flap is configured to open upward when the fuel gun is inserted.

12. The vehicle of claim 11, wherein: the first flap having a first latch protrusion formed to lock to a first end of the third flap; The second flap has a second latch protrusion formed to lock to a second end of the third flap; and The third shutter plate has a first latching groove formed at a first end of the third shutter plate and having a shape corresponding to the first latching protrusion, and a second latching groove formed at a second end of the third shutter plate and having a shape corresponding to the second latching protrusion.

13. The vehicle according to claim 12, wherein: When the fuel gun having a predetermined diameter or larger is inserted, the distance between the first baffle and the second baffle increases, and the first latch protrusion is configured to be unlocked from the first latch groove, and the second latch protrusion is configured to be unlocked from the second latch groove, so that the third baffle can move downward.

14. The vehicle of claim 12, wherein: the third flap having a third latch protrusion formed to lock to the second flap; The second flip has a flip latch groove formed to have a shape corresponding to the third latch protrusion; and When the third flap moves downward, the third latch protrusion is configured to be unlocked from the flap latch groove so that the second flap is opened upward by tension of the fuel gun applied to the second flap.

15. The vehicle of claim 11, wherein: When the fuel gun having a predetermined diameter or larger is inserted, the first flap is configured to open upward around the first hinge spring by tension applied to the first flap in a closed state, and the second flap is configured to open upward around the second hinge spring by tension applied to the second flap in a closed state.

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