JP6544061B2 - Fuel supply system - Google Patents

Description

  The present invention relates to a fuel supply device.

  Conventionally, as a fuel supply device incorporated in a vehicle, a configuration is known in which a fuel flow path communicating with a filler opening is formed by a filler neck, and a filler tube reaching the fuel tank is connected to the lower end of the filler neck. (Patent Document 1).

JP, 2014-213700, A

  The fuel supply device shown in the above-mentioned patent documents is excellent in the point of improving the assemblability of the guide member which guides a fueling gun. On the other hand, although the refueling gun is guided and inserted into the fuel flow path without any trouble, the insertion degree of the refueling gun can be changed each time for refueling depending on the refueling worker's habit and proficiency, etc. It is feared to contact the inner wall of the fuel flow path. For these reasons, it has been required to make it possible to prevent or suppress the contact with the fueling gun.

  In order to achieve at least a part of the above-mentioned problems, the present invention can be implemented as the following modes.

  (1) According to one aspect of the present invention, a fuel supply device is provided. The fuel supply device includes a flow path forming portion forming a fuel flow path communicating with the fuel supply port, and extends continuously from the flow path forming portion to form a lower end side flow path of the fuel flow path. And a connecting portion to which the filler tube is connected, and the connecting portion is expanded in diameter than the flow path forming portion to form the lower end side flow path with a flow path area wider than the fuel flow path.

  According to the fuel supply device of this aspect, the tip end position of the fueling gun inserted in the fuel flow passage through the fuel supply port at the time of fuel supply, with the flow passage area of the lower end side flow passage wider than the fuel flow passage By conforming to the above, the contact of the tip of the fueling gun with the inner wall of the lower end side channel can be avoided without using a member for contact avoidance.

  (2) In the fuel supply device of the above aspect, the connection portion forms the flow passage area of the lower end flow passage wider than the fuel flow passage in a partial region around the flow passage peripheral wall of the lower end flow passage. You may do so. This has the following advantages: The fuel supply gun is not inserted into the fuel supply port in all directions around the fuel supply port peripheral wall, and is inserted into the fuel supply port each time the fuel supply port within a prescribed range around the fuel supply port peripheral wall. Therefore, the tip of the inserted fueling gun is positioned within a prescribed range around the flow path peripheral wall of the lower end flow path. From this, according to the fuel supply device of this aspect, a partial area around the flow path peripheral wall of the lower end side flow path having the flow path area formed wider than the fuel flow path at the tip end position of the fueling gun at each fueling. By matching, it is possible to easily avoid the contact of the fueling gun.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the outline | summary of the fuel supply apparatus for supplying a fuel to the fuel tank of a motor vehicle. It is explanatory drawing which shows roughly the mode of mounting | wearing to the vehicle of the filler neck concerning 1st Embodiment. It is an explanatory view showing roughly a situation of insertion of a refueling gun to a filler neck at the time of refueling. It is an explanatory view schematically showing the possible positions of the tip of the gun when the fuel supply gun is inserted into the filler neck with the insertion position changed, as viewed from the arrow X direction in FIG. It is an explanatory view showing the filler neck in cross section in the longitudinal direction. It is explanatory drawing which shows the neck main body which comprises a filler neck by a longitudinal direction cross sectional view and two planar sectional views. It is an explanatory view for explaining an effect acquired with a fuel supply system of a 1st embodiment. It is explanatory drawing which shows the neck main body which comprises the filler neck of the modification of 1st Embodiment by the longitudinal cross-sectional view and planar cross-sectional view of two places. It is an explanatory view showing the filler neck of a 2nd embodiment by sectioning.

  FIG. 1 is an explanatory view showing an outline of a fuel supply device FS for supplying fuel to a fuel tank FT of a car, and FIG. 2 is a schematic view of how the filler neck 10 according to the first embodiment is attached to a vehicle. FIG. 3 is an explanatory view schematically showing the insertion of the fueling gun FG into the filler neck 10 at the time of fueling, and FIG. 4 is a filler neck of the fueling gun FG with the insertion position changed. FIG. 10 is an explanatory view schematically showing a possible position of a gun tip FGt when it is inserted into 10 as seen from the arrow X direction in FIG. 1;

  A vehicle not shown is provided with a fuel supply chamber FR at the rear of the vehicle body. In the fuel supply chamber FR, a fuel supply chamber substrate FRb is incorporated, and as shown in FIGS. 2 and 3, the fuel supply lid FL is supported so as to be openable and closable. The fuel supply lid FL is supported so as to be openable and closable by the outer plate of the vehicle body via a hinge FLb and the lid main body FLa following the outer plate of the vehicle body. The fueling chamber substrate FRb is a plate for mounting the filler neck 10 described later in the fueling chamber FR, and the filler neck 10 exposes the insertion side opening / closing mechanism 50 of the insertion flow passage forming member 30 described later in the fueling chamber FR. ing. The insertion side opening / closing mechanism 50 is a mechanism for supplying fuel to the fuel tank FT without using a fuel cap. As shown in FIG. 3, the fueling gun FG is inserted so as to push the insertion side opening / closing mechanism 50 by taking the fueling position included in the fueling posture range FGr defined by the opening area of the fueling chamber FR. By inserting the fueling gun FG, the gun tip FGt enters the fuel flow path 11P described later of the filler neck 10. Since the refueling position of the refueling gun FG is different in the refueling posture range FGr, even at the gun tip FGt, as shown in FIG. 4, according to the refueling position of the refueling gun FG, around the flow path of the fuel flow path 11P. The position is different. The gun tip FGt is located in the range corresponding to the fuel supply posture range FGr of the fuel supply gun FG on the open side of the fuel supply chamber FR opened and closed by the fuel supply lid FL.

  As shown in FIG. 1, the fuel supply device FS includes the filler neck 10 according to the first embodiment, the breather pipe 23, the filler tube TB, the check valve TV, the breather pipe BP, and the gas release control valve BV. And have. The filler neck 10 is fixed to the fuel supply chamber FR by the fuel supply chamber substrate FRb (see FIGS. 2 and 3) of the fuel supply chamber FR, and receives insertion of the fuel supply gun FG into the fuel supply port FC. The filler neck 10 is connected to the fuel tank FT by a filler tube TB and a breather pipe BP. The filler tube TB is, for example, a resin tube having a bellows structure at two places, and can expand and contract and bend in a certain range. The filler tube TB is connected to the fuel tank FT via a check valve TV. The fuel discharged from the fueling gun FG inserted into the fueling port FC is supplied to the fuel tank FT through a fuel flow path described later formed by the filler neck 10, the filler tube TB and the check valve TV. The check valve TV prevents the backflow of fuel from the fuel tank FT to the filler tube TB.

  One end of the breather pipe BP is connected to the fuel tank FT via the gas release adjustment valve BV, and the other end is connected to a breather pipe 23 protruding from the filler neck 10. The gas release adjustment valve BV is a check valve that opens and closes according to the internal pressure of the fuel tank FT. When the internal pressure of the fuel tank FT is less than a predetermined value, it closes and the air from the fuel tank FT to the filler neck 10 It does not cause a reflux. Then, when the internal pressure of the fuel tank FT becomes higher than a predetermined value, the gas release adjusting valve BV is opened to circulate air from the fuel tank FT to the filler neck 10. The air in the tank contains fuel vapor, and this fuel vapor is introduced to the fuel tank FT through the filler tube TB together with the supplied fuel when being fed from the fueling gun FG. By the operation of the gas release adjusting valve BV, the internal pressure in the fuel tank FT is maintained at a predetermined pressure. Hereinafter, the configuration of the main part of the fuel supply device FS will be described in detail.

  FIG. 5 is an explanatory view showing the filler neck 10 in cross section in the longitudinal direction. As illustrated, the filler neck 10 includes a neck body 20, an insertion flow path forming member 30, an injection port forming member 40, an insertion side opening / closing mechanism 50, and an injection port opening / closing mechanism 60. The neck body 20 includes a neck upper end portion 21 and a neck connecting portion 22 from the upstream side of the fuel flow path 11P, and the breather pipe 23 protrudes from the neck connecting portion 22. The neck upper end portion 21 is a flow path forming member that forms a fuel flow path 11P that communicates with the fuel supply port FC that appears when the insertion side opening / closing mechanism 50 described later is opened by the fueling gun FG. The insertion flow path forming member 30 is assembled. The neck connecting portion 22 continuously extends from the neck upper end portion 21 to form a lower end side flow passage 11Pd of the fuel flow passage 11P, and a filler tube TB (see FIG. 1) for fuel supply is connected.

  The neck body 20 is configured by laminating two types of resin materials including the neck upper end portion 21, the neck connection portion 22 and the breather pipe 23, and as shown in FIG. 5, the resin on the fuel flow path 11 P side An inner layer 27 and an outer resin layer 28 laminated on the outer surface of the inner resin layer 27 are provided. The resin inner layer 27 is formed of a resin material excellent in fuel permeation resistance, for example, polyamide (PA) such as nylon, ethylene vinyl alcohol copolymer (EVOH), etc., and is mainly a barrier layer which suppresses fuel permeation. Act as. The resin outer layer 28 is formed of a resin material having excellent mechanical strength, such as polyethylene (PE), and mainly functions as a layer for securing the mechanical strength and impact resistance of the neck body 20. When polyethylene is used as the resin outer layer 28, a resin material (modified polyethylene) modified with maleic acid as a polar functional group can be used. The modified polyethylene is bonded to the resin inner layer 27 because it is bonded to PA by chemical bonding.

  FIG. 6 is an explanatory view showing the neck main body 20 constituting the filler neck 10 in a longitudinal sectional view and two plan sectional views. In the cross sectional view in FIG. 6, only the resin inner layer 27 is viewed in cross section along the lines A-A and B-B for the neck upper end portion 21 and the neck connecting portion 22, and the cross-sectional views are shown overlapped. There is.

  As shown in FIGS. 5 and 6, both the neck upper end portion 21 and the neck connection portion 22 are cylindrical bodies, and the neck connection portion 22 is a fuel in a region where the neck upper end portion 21 forms the lower end side channel 11Pd. The diameter is increased from the neck upper end portion 21 so as to form a flow passage area wider than the flow passage 11P. In the present embodiment, the neck connecting portion 22 is a neck over a partial region around the flow passage peripheral wall of the lower end side flow passage 11Pd on the right side of the paper surface in FIG. The diameter is expanded from the upper end 21. Therefore, the neck connecting portion 22 forms the flow passage area of the lower end flow passage 11Pd wider than the fuel flow passage 11P in a partial region around the flow passage peripheral wall of the lower end flow passage 11Pd. Such a flow path configuration can be obtained by forming the neck connecting portion 22 in a cylindrical shape eccentrically with respect to the neck upper end portion 21 as shown in the cross sectional view of FIG.

  The neck connecting portion 22 is a so-called far tree provided with a plurality of annular protruding portions 22a on the outer peripheral portion on the lower end side. By inserting the filler tube TB into the neck connecting portion 22, the filler tube TB is connected to the neck connecting portion 22 in a state where the filler tube TB is prevented from being removed by the annular projection 22a. The breather pipe 23 is a pipe branched from the side wall of the neck connection portion 22, and the inside thereof is a breather flow path 23P. A breather pipe BP extending from the fuel tank FT is connected to the breather flow path 23P, and fuel vapor in the fuel tank at the time of refueling is returned to the neck connecting portion 22 to smoothly perform the refueling.

The insertion flow passage forming member 30 includes a cover member 32. The cover member 32 is mounted on the top of the neck body 20, and includes a cylindrical side wall 32a and an upper wall 32b. The upper portion of the side wall portion 32a is inclined, and the upper wall 32b is integrally formed on the inclined upper portion. The upper wall 32b is provided with an opening 32d for inserting the fueling gun FG (see FIG. 3). The opening 32 d is provided with an insertion opening 32 e to be the fuel filler FC and a shaft support 32 f. The insertion opening 32e is a substantially circular opening for inserting the fueling gun FG , and serves as the fueling port FC communicating with the fuel flow passage 11P. The shaft support portion 32 f is formed on the inner wall of the side wall portion 32 a and mounts and supports the end of the insertion side opening / closing mechanism 50.

The insertion side opening / closing mechanism 50 is incorporated in the insertion flow path forming member 30, and includes an opening / closing member 51, a bearing portion 52, and a spring 53 for biasing the opening / closing member 51 in the closing direction. The opening and closing member 51 is pushed by the tip of the fueling gun FG and pivots about the bearing 52 to open the insertion opening 32e, which is the fueling port FC.

  The inlet forming member 40 is a resin molded product to be welded to the resin inner layer 27 in the neck main body 20, and supports the inlet opening and closing mechanism 60 for opening and closing the inlet 41 with the fuel gun FG. The inlet opening and closing mechanism 60 includes an opening and closing member 61, a bearing portion 62, a spring 63, a gasket 64, and a pressure regulating valve 65. The opening and closing member 61 includes a pressing member 61 a and a valve chamber forming member 61 b, and forms a valve chamber that accommodates the pressure adjusting valve 65. The bearing portion 62 rotatably supports the opening and closing member 61 with respect to the inlet formation member 40 by being interposed between the opening and closing member 61 and the inlet formation member 40. The spring 63 biases the opening and closing member 61 in the closing direction. The gasket 64 is annularly formed of a rubber material, mounted on the outer peripheral portion of the opening / closing member 61, and closes the inlet 41 in a sealed state by being held between the peripheral portion of the inlet 41 . The pressure regulating valve 65 is housed in the valve chamber, and includes a positive pressure valve biased by a spring, and opens when the pressure of the fuel tank exceeds a predetermined pressure to release the pressure on the fuel tank side.

  In order to manufacture the fuel supply device FS, first, the neck body 20, the insertion flow path forming member 30 and the injection port forming member 40 are manufactured by injection molding. At this time, the neck main body 20 is obtained by two-color injection molding using two types of resin materials in order to form a laminate of the resin inner layer 27 and the resin outer layer 28. Next, the injection port forming member 40 is integrated with the neck body 20 by a laser welding method. Next, the insertion side opening / closing mechanism 50 is assembled to the cover member 32 of the insertion flow path forming member 30, and the injection port opening / closing mechanism 60 is assembled to the injection port forming member 40. Then, the cover member 32 assembled with the insertion side opening / closing mechanism 50 is assembled and engaged with the neck main body 20. Thereby, the filler neck 10 shown in FIG. 5 is obtained.

  The filler neck 10 thus obtained is assembled using the fuel supply chamber substrate FRb such that the insertion side opening / closing mechanism 50 of the insertion flow passage forming member 30 is exposed to the fuel supply chamber FR (see FIG. 2). At this time, the filler neck 10 is fixed so that the diameter-increased area of the neck connecting portion 22 shown in FIG. 6 is positioned on the open side (see FIG. 4) of the fueling chamber FR opened and closed by the fueling lid FL. .

  The fuel supply device FS using the filler neck 10 of the first embodiment having the configuration described above has the following effects. FIG. 7 is an explanatory view for explaining an effect obtained by the fuel supply device FS of the first embodiment. When the fueling gun FG is inserted into the fuel flow path 11P through the fueling port FC (see FIG. 5) at the time of fueling, the gun tip FGt of the fueling gun FG is a flow path wider than the fuel flow path 11P as illustrated. It does not interfere with the neck upper end portion 21 which is located in the flow passage area of the lower end side flow passage 11Pd of the area and which forms the fuel flow passage 11P on the upstream side of the lower end side flow passage 11Pd. Therefore, according to the fuel supply device FS of the first embodiment, the fuel flow path 11P formed by the neck upper end 21 is originally in contact with the inner end of the lower end side flow path 11Pd downstream of the gun tip FGt. This can be avoided without using a member for contact avoidance. As a result, according to the fuel supply device FS of the first embodiment, the damage caused by the contact of the fuel supply gun FG can be easily avoided.

  The fuel supply device FS according to the first embodiment forms the lower end side flow passage 11Pd in the neck connecting portion 22, and in the partial region around the flow passage peripheral wall of the lower end side flow passage 11Pd, the flow passage of the lower end side flow passage 11Pd. The area was made wider than the fuel flow path 11P. Then, the enlarged diameter area of the neck connecting portion 22 which widens the flow passage area of the lower end side flow passage 11Pd is positioned on the open side (see FIG. 4) of the fueling chamber FR opened and closed by the fueling lid FL. Therefore, there are the following advantages.

  The fueling gun FG is not inserted into the fueling port FC of the fueling chamber FR from all directions around the peripheral wall of the fueling port, and is inserted into the fueling port FC each time fueling in the fueling posture range FGr around the peripheral wall of the fueling port. Be Therefore, the gun tip FGt of the inserted fueling gun FG is located in the range corresponding to the refueling posture range FGr around the flow passage peripheral wall of the lower end flow passage 11Pd (see FIG. 4). As shown in FIG. 4, the fuel supply device FS according to the first embodiment has one of the flow passage peripheral walls around the lower end side flow passage 11 Pd having a larger flow passage area than the fuel flow passage 11 P at a position where the gun tip FGt can be taken. By matching the partial areas, damage due to the contact of the refueling gun FG can be easily avoided. Then, the area of the lower end side flow path 11Pd where the flow path area is not wider than the fuel flow path 11P, specifically, the area of the neck connecting portion 22 overlapped with the neck upper end 21 as shown in the cross sectional view of FIG. Since it is not necessary to increase the diameter of the neck connection 22 from the upper end 21 of the neck, the state of the extension of the neck connection 22 on the side of the breather pipe 23 or the breather pipe 23 extending from the neck connection 22 in this region Can be similar to the existing configuration.

  The situation of the protrusion of the breather tube 23 from the neck connection 22 and the extension of the neck connection 22 on the side of the breather tube 23 are as in the existing configuration, so on the vehicle compartment side from the fueling chamber FR shown in FIG. There is no need to change the path of the breather pipe BP or the filler tube TB. Therefore, it is possible to meet the demand for securing a wide cabin space without causing a narrowing of the cabin space accompanying the route change. Further, in the fuel supply device FS of the present embodiment, the enlarged diameter region of the neck connecting portion 22 that widens the flow passage area of the lower end side flow passage 11Pd is the open side of the fueling chamber FR opened and closed by the fueling lid FL (FIG. 4 1), the neck of the upper end of the neck upper end 21 and the outer shell of the neck connecting portion 22 are formed on the vehicle compartment side of the fuel supply chamber substrate FRb in the fuel supply chamber FR, as shown in FIG. Even if the diameter of the portion 22 is expanded from the neck upper end portion 21, the space reduction of the casing space and the expansion of the fuel supply chamber FR are not caused. Therefore, according to the fuel supply device FS of the present embodiment, the size increase of the vehicle is not invited in response to the request for securing the vehicle cabin space widely.

  Next, a modification is described. FIG. 8 is an explanatory view showing a neck main body 20A constituting the filler neck 10A of the modification of the first embodiment in a longitudinal sectional view and a plan sectional view along the line A-A. Even in FIG. 8, only the resin upper layer 27 of the neck upper end portion 21 and the neck connecting portion 22 is shown in cross section in a cross sectional view.

  As illustrated, the neck main body 20A of the modification expands the neck connecting portion 22 uniformly from the neck upper end 21 around the flow path peripheral wall of the lower end flow path 11Pd, and the fuel is also reduced for the lower end flow path 11Pd. The flow passage area was made wider uniformly than the fuel flow passage 11P around the flow passage peripheral wall of the flow passage 11P. Also by the fuel supply device FS having the filler neck 10 including the neck main body 20A, the neck connecting portion 22 is expanded in diameter from the neck upper end portion 21 to make the lower end side passage 11Pd a passage area larger than the fuel passage 11P. Therefore, the effects described above can be exhibited.

  Next, another embodiment will be described. FIG. 9 is an explanatory view showing the filler neck 10B of the second embodiment in cross section. The filler neck 10B is configured to open and close the fuel supply port FC of the fuel flow path 11P using a fuel cap (not shown) to achieve fueling. Although different in this respect, like the filler neck 10 described above, the filler neck 10B includes the neck upper end 21 and the neck connecting portion 22 and is formed through lamination of the resin inner layer 27 and the resin outer layer 28. Fuel is supplied to the fuel tank FT (see FIG. 1) via the filler tube TB having the neck body 20B and connected to the neck connection portion 22. The respective members shown in the figure are the same as the filler neck 10 of the first embodiment in their functions if the reference numerals attached thereto are the same, so detailed description will be omitted.

  The filler neck 10B includes an inlet forming member 43 which replaces the inlet forming member 40 in the filler neck 10 described above. The injection port forming member 43 includes a guide wall 44, and is inserted into the lower end side flow passage 11Pd from the lower end side of the neck connection portion 22, and is held by the lower end side flow passage 11Pd. The guide wall 44 forms an opening 44 h having a diameter smaller than that of the fuel flow passage 11 P, extends in an inclined manner, and guides the fuel supply gun FG inserted into the fuel flow passage 11 P from the fuel supply port FC.

  The neck body 20B in the filler neck 10B has a screw portion 21n on the inner peripheral wall on the opening side of the resin inner layer 27, and the fuel cap is screwed and fixed to the screw portion 21n. The resin inner layer 27 and the resin outer layer 28 constituting the neck body 20B are covered with a metal retainer 130 at the upper end of the both, and the retainer 130 seals the fuel cap with a not-shown gasket, Mechanical strength is secured.

  The neck connecting portion 22 in the neck main body 20B, like the neck main body 20A (see FIG. 8) which is a modified example of the first embodiment, uniformly necks the neck connecting portion 22 around the peripheral wall of the lower end side flow passage 11Pd. The diameter of the lower end side flow passage 11Pd is also expanded from the upper end portion 21, and the flow passage area is made wider uniformly than the fuel flow passage 11P around the flow passage peripheral wall of the fuel flow passage 11P. Also by the fuel supply device FS having the filler neck 10B including the neck main body 20B, the neck connecting portion 22 is expanded in diameter from the neck upper end portion 21 to make the lower end side flow passage 11Pd a flow passage area larger than the fuel flow passage 11P. Therefore, the effects described above can be exhibited.

  The present invention is not limited to the above-described embodiment, and can be realized in various configurations without departing from the scope of the invention. For example, the technical features of the embodiment corresponding to the technical features in the respective forms described in the section of the summary of the invention can be used to solve some or all of the problems described above, or a part of the effects described above It is possible to replace or combine as appropriate to achieve all or all. Also, if the technical features are not described as essential in the present specification, they can be deleted as appropriate.

  In the above embodiment, the diameter of the neck connecting portion 22 is made larger than that of the neck upper end 21 to make the flow passage area of the lower end side flow passage 11Pd wider than the fuel flow passage 11P. Although the neck connecting portion 22 is expanded in a circular shape, the present invention is not limited to this. For example, the diameter of the lower end side flow passage 11Pd is made wider than that of the fuel flow passage 11P by expanding the diameter of the neck connecting portion 22 from the upper end 21 of the neck in a rectangular shape, polygonal shape, elliptical shape, fan shape or the like. It is also good. Further, the lower end side flow passage 11Pd may be gradually expanded in diameter each time it goes from the continuous part with the fuel flow passage 11P to the flow passage downstream.

  In the above embodiment, the filler tube TB is connected as a so-called far tree having the annular projection 22a at the end of the neck connection 22. However, in the quick connector type in which the lower end wall of the neck connection 22 is the connector outer wall, the neck connection The filler tube TB may be connected to the portion 22. In addition, the filler tube TB may be connected and fixed to the neck connection portion 22 by a binding fixture such as a band. Even if it is in filler tube TB connected with neck connection part 22, it is good also as a tube made of rubber other than a tube made of resin, or a tube made of metal.

  In the filler neck 10B of the second embodiment shown in FIG. 9, as shown in the cross sectional view of FIG. 6, the neck connecting portion 22 is formed in a tubular shape eccentrically to the neck upper end portion 21. It is also good.

  In the above embodiment, the neck body 20, which is the main member of the filler neck 10, is formed by laminating the resin inner layer 27 and the resin outer layer 28, but a single layer neck body 20, three layers, etc. The multi-layered neck body 20 may be used. Further, the neck body 20 may be made of metal.

  In the above embodiment, the lower end side flow passage 11Pd following the fuel flow passage 11P is extended to the lower end of the neck connection portion 22. However, in the far tree in which the annular protrusion 22a is formed, for example, the same as the neck upper end portion 21. The diameter may be reduced to a certain extent. Also in this case, the vicinity of the reaching point of the gun tip FGt of the fuel supply gun FG inserted from the fuel supply port FC is included in the lower end side flow passage 11Pd as apparent in FIG. Then, since the far tree is located downstream along the flow direction from the arrival point of the gun tip FGt, the contact of the gun tip FGt with the fuel flow passage peripheral wall in the far tree does not occur.

DESCRIPTION OF SYMBOLS 10, 10A, 10B ... Filler neck 11P ... Fuel flow path 11Pd ... Lower end side flow path 20, 20A, 20B ... Neck main body 21 ... Neck upper end part 21n ... Screw part 22 ... Neck connection part 22a ... Annular protrusion 23 ... Breather pipe 23P: breather flow path 27: resin inner layer 28: resin outer layer 30: insertion flow path forming member 32: cover member 32a: side wall portion 32b: upper wall 32d: opening 32e: insertion opening 32f: shaft support 40: inlet Forming member 41: Injection port 43: Injection port forming member 44: Guide wall 44h: Opening 50: Insertion side opening and closing mechanism 51: Opening and closing member 52: Bearing portion 53: Spring 60: Injection port opening and closing mechanism 61: Opening and closing member 61a: Pressing member 61b ... valve chamber forming member 62 ... bearing portion 63 ... spring 64 ... gasket 65 ... pressure regulating valve 130 ... retainer BP ... breather Pipe BV ... gas release adjustment valve FC ... fueling port FG ... fueling gun FGr ... fueling attitude range FGt ... gun tip FL ... fueling lid FLa ... lid body FLb ... hinge FR ... fueling chamber FRb ... fueling chamber substrate FS ... fuel supply device FT ... Fuel tank TB ... Filler tube TV ... Check valve

Claims (1)

A fuel supply device,
A flow passage forming portion (21) forming a fuel flow passage (11P) communicating with the fuel filler (FC);
A connecting portion (not shown) continuously extending from the flow path forming portion (21) to form a lower end side flow path (11Pd) of the fuel flow path (11P) and connecting a filler tube (TB) for fuel refueling 22) and,
The connecting portion (22) has a shape which is eccentrically or concentrically enlarged with respect to the flow path forming portion (21), and the fueling gun (FG) is inserted into the fueling port (FC) in the region where the tip of the gun (FGT) is positioned, prior Symbol lower side channel (11Pd) is formed to be wider flow path volume from the previous SL fuel flow path (11P), the fuel supply device.

Images