JP2016175463A - Fuel supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel supply system which enables improvement of strength of a fitting part where a filler neck body is fitted in a tube.SOLUTION: A fuel supply system includes: a filler neck body 110 having a hollow fuel passage formation part forming a fuel passage 100P, in which a supplied fuel passes, and a fitting part 111 which fits in a tube 40 for guiding the supplied fuel to a fuel tank; a nozzle guide 150 which is disposed at the inner side of the fuel passage formation part and guides an oil feed nozzle for supplying the fuel; and a rib 151 which is disposed between the filler neck body 110 and the nozzle guide 150 in a position facing the fitting part 111 and contacts with an outer peripheral surface of the nozzle guide 150.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a fuel supply apparatus.

  2. Description of the Related Art Conventionally, as a fuel supply device that guides supplied fuel to a fuel tank of an automobile, a fuel supply device having an opening that is opened and closed in the middle of a fuel passage is known. In Patent Document 1, fuel vapor generated by vaporization in a fuel tank and fuel droplets at the time of refueling are prevented from coming out of the vehicle and are arranged inside a filler neck body for guiding a fuel nozzle to the fuel tank side. The nozzle guide is described. Patent Document 2 describes a fuel supply nozzle guide device in which a protrusion formed inside a filler neck main body is engaged with an outer peripheral surface of a nozzle guide on the fuel tank side. Patent Document 3 describes a cooling pipe for an internal combustion engine that includes a detent coupling mechanism that integrally forms a detent element that couples one end of a pipe disposed inside and one end of a hose disposed outside. Yes.

JP 2009-83569 A JP 2012-116380 A Special table 2003-507615 gazette

  2. Description of the Related Art Conventionally, a fuel supply device having a filler tube connected to a cylindrical portion formed on the fuel tank side of a filler neck main body is known in order to supply fuel supplied from a fuel filler nozzle to a fuel tank. Patent Documents 1 to 3 do not describe a technique for improving the strength of the cylindrical portion of the filler neck in order to prevent deformation and breakage of the filler neck main body. When the filler tube is press-fitted and connected so as to cover the cylindrical portion of the filler neck main body, a force toward the inside is generated in the cylindrical portion, so there is a problem of improving the strength of the cylindrical portion. . Further, there is a problem that the strength of the cylindrical portion is desired to be improved even when an external force other than the stress due to the press-fitting of the filler tube is applied. Further, since automobiles equipped with a fuel supply device are required to be downsized, there is a problem that the fuel supply device is desired to be further downsized.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

(1) According to one form of this invention, a fuel supply apparatus is provided. This fuel supply device includes a hollow fuel passage forming portion that forms a fuel passage through which supplied fuel passes, a fitting portion that fits a tube for guiding the supplied fuel to a fuel tank, A filler neck body that is disposed inside the fuel passage forming portion and guides a fuel supply nozzle that supplies fuel; at a position facing the fitting portion, the filler neck body and the nozzle guide And a rib that is disposed between the nozzle guide and the outer peripheral surface of the nozzle guide. According to the fuel supply device of this aspect, the strength of the fitting portion against the external force to the inner periphery of the filler neck is improved by the rib. Further, since the ribs are provided, the clearance between the fuel passage forming portion and the outer peripheral surface of the nozzle guide can be reduced, and the inner diameter of the nozzle guide can be set in accordance with the diameter of the fueling nozzle inserted into the nozzle guide. Thereby, rattling between the oil supply nozzle inserted into the nozzle guide and the nozzle guide can be reduced. Moreover, even if the ribs have the same wall thickness or the axial length of the fuel supply device is reduced, the volume of the fuel supply device can be secured, so that the fuel supply device can be downsized.

(2) In the fuel supply device of the above aspect, the rib may be integral with the nozzle guide and protrude from an outer peripheral surface of the nozzle guide. According to the fuel supply device of this aspect, the position of the rib with respect to the nozzle guide can be easily manufactured according to the design value. Further, it is not necessary to dispose ribs as separate members different from the filler neck main body and the nozzle guide, and the number of parts constituting the fuel supply device is reduced, so that the fuel supply device can be easily manufactured.

(3) In the fuel supply device of the above aspect, the end of the nozzle guide and the end of the rib on the fuel tank side are located closer to the fuel tank than the end of the filler neck body on the fuel tank side. May be. According to the fuel supply device of this aspect, the rib of the nozzle guide can support the end of the fitting portion to which the most force is applied when the filler tube is press-fitted into the fitting portion.

(4) In the fuel supply device of the above aspect, the rib may be a plurality of protrusions extending in parallel with the axial direction of the nozzle guide. According to the fuel supply device of this aspect, the plurality of protrusions as ribs are formed on the nozzle guide, whereby the strength is further improved against the external force applied to the inside of the fitting portion of the filler neck body.

(5) In the fuel supply device according to the above aspect, the protruding amount of the rib in the radial direction at the end on the fuel tank side may decrease as the fuel tank is approached. According to the fuel supply device of this aspect, when the tube is fitted to the fitting portion, the reinforcing rib does not prevent the fitting, and the tube is smoothly fitted to the fitting portion.

  Note that the present invention can also be realized in various modes other than the fuel supply device. For example, it can be realized in the form of an automobile equipped with a fuel supply device, a method for manufacturing the fuel supply device, and the like.

  According to this invention, the intensity | strength of the fitting part with respect to the external force to the inner periphery in a filler neck improves by a rib. Further, since the ribs are provided, the clearance between the fuel passage forming portion and the outer peripheral surface of the nozzle guide can be reduced, and the inner diameter of the nozzle guide can be set in accordance with the diameter of the fueling nozzle inserted into the nozzle guide. Thereby, rattling between the oil supply nozzle inserted into the nozzle guide and the nozzle guide can be reduced. Moreover, even if the ribs have the same wall thickness or the axial length of the fuel supply device is reduced, the volume of the fuel supply device can be secured, so that the fuel supply device can be downsized.

It is a perspective view of a fuel filler opening of a car provided with a fuel supply device in this embodiment. It is a perspective view at the time of inserting the fuel supply nozzle which supplies fuel to a fuel supply apparatus. It is the schematic which shows the positional relationship of the fuel tank mounted in the inside of a motor vehicle, and a fuel supply apparatus. It is an external view of the filler neck to which the filler tube is connected. It is sectional drawing of the cross section M1 in FIG. It is an exploded sectional view of a filler tube and a filler neck. It is a 4th page figure of a nozzle guide. It is a perspective view of a nozzle guide. It is a perspective view of a nozzle guide. It is sectional drawing which shows an example of the state with which the fuel was supplied to the filler neck.

A. Embodiment:
(1) Schematic Configuration of Fuel Supply Device FS FIG. 1 is a perspective view of a fuel filler port of an automobile provided with the fuel supply device FS in the present embodiment. FIG. 1 shows a fuel supply device FS having a fuel passage for guiding the supplied fuel to a fuel tank (not shown) inside the automobile, and members disposed around the fuel supply device FS. ing. An oil filler lid FL is supported on the vehicle body so as to be openable and closable. The oiling lid FL includes a lid body FLa that follows the outer plate of the vehicle body. The lid body FLa is supported on the outer plate of the vehicle body through a hinge FLb so as to be openable and closable. A space that appears when the fueling lid FL is opened is a fueling chamber FR. A fuel tank opening / closing device 10 supported by the substrate BP is disposed in the fueling chamber FR. The fuel tank opening and closing device 10 is a mechanism for guiding fuel to the fuel tank via the fuel supply device FS without using a fuel cap. The fuel tank opening and closing device 10 is a mechanism that opens and closes the fuel passage by an external force from the fueling nozzle after the fueling lid FL is opened.

  FIG. 2 is a perspective view when a fuel supply nozzle NZ for supplying fuel to the fuel supply device FS is inserted. FIG. 2 shows a state in which the tip NZa of the fuel supply nozzle NZ is inserted into the fuel tank opening / closing device 10 and fuel is supplied to the fuel supply device FS. In the present embodiment, when the fueling chamber FR is viewed from the front, the fueling lid FL is disposed so as to open to the left side. Therefore, the fuel nozzle NZ inserted into the fuel tank opening / closing device 10 can rotate counterclockwise around the axis OL1 from the fuel nozzle NZ to the fuel tank opening / closing device 10, but there is interference with the fuel lid FL. Therefore, clockwise rotation is limited. In other embodiments, the positional relationship between the fuel supply nozzle NZ inserted in the fuel tank opening and closing device 10 and the fuel supply lid FL can be variously modified.

  FIG. 3 is a schematic diagram showing the positional relationship between the fuel tank FT mounted inside the automobile and the fuel supply device FS. The fuel supply device FS includes a filler neck 100, a filler tube 40, a breather pipe 50, a flow rate control valve 60, and a check valve 30. The filler neck 100 and the fuel tank FT are connected by a filler tube 40 and a breather pipe 50. The filler tube 40 is connected to the fuel tank FT via the check valve 30. The breather pipe 50 is connected to the fuel tank FT via the flow control valve 60. Since the breather pipe 50 is disposed above the filler tube 40 in the vertical direction, the supplied fuel passes through the filler tube 40 and does not flow into the breather pipe 50. The fuel vapor generated by vaporization in the fuel tank FT returns from the fuel tank FT to the fuel passage formed in the filler neck 100 via the breather pipe 50.

(2) Detailed Configuration of Filler Neck 100 FIG. 4 is an external view of the filler neck 100 to which the filler tube 40 is connected. FIG. 4A shows a front view of the filler neck 100 to which the filler tube 40 is connected. FIG. 4B shows a right side view of the filler neck 100 to which the filler tube 40 is connected. The filler neck 100 includes a filler neck main body 110, a base 180 that covers the upstream side of the filler neck main body 110, and a nozzle guide 150 that is disposed inside the filler neck main body 110 that is not illustrated in FIG. Yes. In the present embodiment, the side of the filler neck 100 to which fuel is supplied (upper side in FIG. 4) is called the upstream side, and the side of the filler neck 100 to which the filler tube 40 is connected (lower side in FIG. 4) is downstream. Call the side.

  As shown in FIGS. 4A and 4B, the filler neck body 110 is formed in a cylindrical shape connecting the upstream side and the downstream side. The filler neck main body 110 has a fuel passage through which the supplied fuel passes. Details of the fuel passage and the nozzle guide 150 will be described later. As shown in FIG. 4B, the filler neck body 110 has a breather port 115 that branches from the upstream side to the downstream side. The breather port 115 is connected to the breather pipe 50 (FIG. 3), and forms part of a path for guiding fuel vapor circulating through the fuel passage 100P through the breather pipe 50 to the fuel passage. Inside the breather port 115, a path through which fuel vapor passes centering on the axis OL3 is formed. The filler neck body 110 is formed of a resin material. The base 180 is a member that covers the circular opening on the upstream side of the filler neck main body 110. The base 180 is made of metal. In the present embodiment, the direction from the upstream side to the downstream side where the fuel supplied to the filler neck 100 passes through the fuel passage is defined as the positive direction of the Y axis. A direction parallel to the plane perpendicular to the axis OL2 passing through the center of the fuel passage and intersecting the axis OL2 and the axis OL3 is defined as a positive direction in the Z-axis direction. An axis orthogonal to the Y axis and the Z axis is defined as the X axis.

  FIG. 5 is a cross-sectional view of the cross section M1 in FIG. FIG. 6 is an exploded cross-sectional view of the filler tube 40 and the filler neck 100. FIG. 5 shows a cross-sectional view of the filler neck 100 to which the filler tube 40 is connected. FIG. 6 is an exploded cross-sectional view of each component in the cross-sectional view of FIG. The filler neck 100 includes a filler neck main body 110, a base 180 fitted into an opening 110Pa located on the upstream side of the filler neck main body 110, and a nozzle guide 150 disposed inside the filler neck main body 110. Have. The filler neck main body 110 has an inner peripheral surface 110a that forms the fuel passage 100P therein, and has a cylindrical shape whose cross-sectional area decreases as it approaches the downstream. The filler neck main body 110 has a waved portion 111 formed in a wave shape for the filler tube 40 to be press-fitted on the outer peripheral surface on the downstream side. The breather port 115 of the filler neck main body 110 forms an introduction path 115P for merging fuel vapor returning from the fuel tank FT via the breather pipe 50 into 100P. The filler neck 100 is manufactured by fitting the base 180 into the opening 110Pa of the filler neck main body 110 after the nozzle guide 150 is disposed inside the filler neck main body 110.

  The nozzle guide 150 is a cylindrical member that is fitted and arranged inside the filler neck main body 110. The inner peripheral surface of the nozzle guide 150 forms a nozzle guide path NZP as a part of the fuel path 100P. The inner peripheral surface of the nozzle guide 150 is formed so that the cross-sectional area decreases from the upstream side toward the downstream side. The tip NZa of the fuel nozzle NZ inserted into the fuel passage 100P is guided to the downstream side of the fuel passage 100P by the nozzle guide passage NZP whose sectional area decreases from the upstream side to the downstream side. The nozzle guide 150 has a steam guide portion 152 that guides fuel vapor guided to the filler neck main body 110 through the introduction path 115P to the downstream side. The detailed shape of the steam guide part 152 will be described later.

  As shown in FIG. 5, a space 158 a that connects the introduction path 115 </ b> P and the fuel path 100 </ b> P is formed by the steam guide portion 152, the filler neck main body 110, and the inner peripheral surface. A space 158b that does not directly communicate with the introduction path 115P is formed on the upstream side of the space 158a by the steam guide portion 152 and the inner peripheral surface of the filler neck main body 110. A space 158c is formed by the outer peripheral surface of the nozzle guide 150 and the inner peripheral surface 110a of the filler neck main body 110 at a position symmetrical to the space 158a with respect to the axis OL2 (position in the negative Z direction). The space 158a, the space 158b, and the space 158c are spaces that communicate with each other through the labyrinth structure by the outer peripheral surface of the nozzle guide 150 and the inner peripheral surface 110a of the filler neck main body 110.

  As shown in FIG. 5, the nozzle guide 150 has reinforcing ribs 151 for increasing the strength of the nozzle guide 150 on the outer peripheral surface between the steam guide portion 152 and the lower end 150 y from the nozzle guide 150. The reinforcing rib 151 protrudes in the outer peripheral direction from the outer peripheral surface of the nozzle guide 150 around the axis OL2 in parallel with the axis OL2. In the present embodiment, the lower end 150 y of the nozzle guide 150 disposed inside the filler neck main body 110 and the lower end on the downstream side of the reinforcing rib 151 formed on the outer peripheral surface of the nozzle guide 150 are downstream of the filler neck main body 110. It is arranged at a position closer to the fuel tank FT than the lower end on the side. In other words, the lower ends of the nozzle guide 150 and the reinforcing rib 151 protrude to the downstream side of the filler neck main body 110 along the axial direction. As shown in FIG. 5, the protruding amount in the outer circumferential direction at the lower end of the reinforcing rib 151 gradually decreases as it approaches the downstream side, and the arc-shaped (R-shaped) chamfered shape in the cross section along the axial direction. Is forming. The fuel supplied from the fuel filler nozzle NZ and the fuel vapor that returns to the filler neck main body 110 via the introduction path 115P merge in the vicinity of the confluence portion 100Pa below the lower end of the nozzle guide 150.

  The filler tube 40 includes a press-fit portion 40a that is press-fitted into the corrugated portion 111, an intermediate portion 40b that is connected to the press-fit portion 40a on the downstream side, an inflow portion 40c that is connected to the intermediate portion 40b on the downstream side, have. The intermediate portion 40 b is reduced in diameter toward the downstream end of the corrugated portion 111, and has an inner diameter that is substantially the same as the inner diameter of the corrugated portion 111 of the filler neck main body 110. The inflow portion 40c forms a fuel passage 100P having the same diameter as the smallest diameter at the lower end 150y of the nozzle guide 150 from the lower end 150y to the fuel tank FT. In other words, the intermediate portion 40b protrudes downstream of the wave-like portion 111 and has a larger diameter than the inflow portion 40c. Further, the inner periphery of the inflow portion 40c is smoothly connected to the inner peripheral portion on the opposite side (minus side of the Z axis) to the breather port 115 which is the lower side in the vertical direction of the vehicle when mounted at the lower end 150y of the nozzle guide 150. As shown in FIG. A seal ring (not shown) is disposed between the corrugated portion 111 of the filler neck main body 110 and the filler tube 40, thereby preventing liquid fuel and fuel vapor from flowing out to the outside.

  FIG. 7 is a four-side view of the nozzle guide 150. 7A shows a left side view of the nozzle guide 150, FIG. 7B shows a front view of the nozzle guide 150, and FIG. 7C shows a nozzle. A right side view of the guide 150 is shown, and FIG. 7D shows a rear view of the nozzle guide 150. 8 and 9 are perspective views of the nozzle guide 150. FIG. The front view and right side view of the nozzle guide 150 shown in FIGS. 7B and 7C correspond to the front view and right side view of the filler neck 100 shown in FIGS. 4A and 4B. doing.

  As shown in FIGS. 7A, 7B, and 7C, the steam guide portion 152 extends along the cylindrical outer peripheral surface of the nozzle guide 150 as it approaches the center from the outer peripheral side with the axis OL2 as the center. It is formed to bend from the upstream side to the downstream side. Further, the steam guide portion 152 is formed in such a shape that the fuel vapor that has returned to the introduction path 115P does not flow directly into the opposite space 158c (FIG. 5) across the axis OL2. The nozzle guide 150 has a first communication hole 156a and a second communication hole 156b (hereinafter also referred to simply as “communication holes 156a and 156b”) on the upstream side of the steam guide portion 152. The communication holes 156a and 156b communicate the space 158a, the space 158b, the space 158c, and the fuel passage 100P shown in FIG. Since the communication holes 156a and 156b are formed on the upstream side of the steam guide portion 152, the fuel vapor that has passed through the introduction path 115P is guided to the downstream side by the steam guide portion 152 and directly connected to the communication hole 156a. , 156b does not join the fuel passage 100P on the upstream side of the filler neck 100. In other words, the fuel vapor can flow in the first communication holes 156 a and 156 b by flowing along the circumferential direction of the outer periphery of the nozzle guide 150.

  As shown in FIGS. 7C, 7D, and 9, the nozzle guide 150 has a sensor corresponding hole 155 formed in a cylindrical outer peripheral surface that communicates the fuel passage 100P and the space 158c (FIG. 5). Have. As shown in FIG. 7D, in this embodiment, the sensor corresponding hole 155 is an opening in which two rectangles are combined. The sensor corresponding hole 155 has an enlarged corresponding hole 155a that is partially opened along the axial direction in the circumferential direction around the axis OL2 as compared with the other part. Since the sensor corresponding hole 155 is formed on the opposite side of the breather port 115 with respect to the axis OL2, when the fuel supply device FS is mounted inside the automobile, it is positioned on the lower side. In addition, the broken line which shows the expansion corresponding hole 155a in FIG.7 (D) is a line shown for convenience, in order to demonstrate the expansion corresponding hole 155a, and is a line unrelated to the actual shape of the nozzle guide 150. In other embodiments, the sensor corresponding holes 155 may have different shapes.

  As shown in FIGS. 7D and 9, the nozzle guide 150 has a corresponding hole first rib 154 a that protrudes from the cylindrical outer peripheral surface in the outer peripheral direction along a part on the downstream side of the sensor corresponding hole 155. And the corresponding hole second rib 154b. The corresponding hole first rib 154a and the corresponding hole second rib 154b are formed in parallel with the axis OL2. In the corresponding hole first rib 154a and the corresponding hole second rib 154b, the length along the axis OL2, the position formed along the axis OL2, and the height protruding from the outer peripheral surface of the nozzle guide 150 in the outer peripheral direction; Are the same. Hereinafter, the corresponding hole first rib 154a and the corresponding hole second rib 154b are collectively referred to as “corresponding hole ribs 154a and 154b”.

  As shown in FIGS. 7B and 8, the nozzle guide 150 protrudes from the outer peripheral surface of the cylindrical shape in the outer peripheral direction, and is formed with a first rectifying rib 153 a and a second that are formed away from the steam guide portion 152. A rectifying rib 153b is formed. As shown in FIG. 7A, the first flow regulating rib 153a is formed on the downstream side along the axis OL2 from the first downstream end 152a that is one end portion on the downstream side of the steam guide portion 152. . Similarly, as shown in FIG. 7C, the second rectifying rib 153b is provided on the downstream side along the axis OL2 from the second downstream end 152b, which is the other end on the downstream side of the steam guide portion 152. Is formed. Although the positions where the first rectifying rib 153a and the second rectifying rib 153b are formed on the nozzle guide 150 are different, the first rectifying rib 153a and the second rectifying rib 153b protruding from the cylindrical outer peripheral surface of the nozzle guide 150 are different. The shape is the same. The first rectifying rib 153a is formed in parallel with the axis OL2. The amount of protrusion in the outer circumferential direction of the first rectifying rib 153a is the maximum on the upstream side, and decreases as it goes downstream. The first rectifying rib 153a and the second rectifying rib 153b are also collectively referred to as rectifying ribs 153a and 153b.

(3) Action and effect of the reinforcing rib 151 The following effects are produced by the configuration of the above embodiment.
FIG. 10 is a cross-sectional view illustrating an example of a state in which the fuel FU is supplied to the filler neck 100. FIG. 10 shows the fuel FU (hatching) supplied to the liquid level LL by the fuel nozzle NZ inserted in the filler neck 100. Generally, a gas sensor GS for detecting the supplied liquid level LL is provided at the tip NZa of the fuel supply nozzle NZ. The gas sensor GS detects the liquid level LL of the fuel FU by sucking outside air and not sucking the fuel FU that is liquid. As shown in FIG. 10, even when a signal for stopping the supply of the fuel FU is transmitted by detecting the liquid level of the fuel FU supplied by the gas sensor GS, the fuel FU remaining in the fuel supply nozzle NZ or the like remains in the filler neck. Since it is continuously supplied to 100, the liquid level LL of the fuel FU rises to a position higher than the position of the gas sensor GS. Therefore, in order to prevent the supplied fuel FU from overflowing from the filler neck 100, it is desired to increase the volume of the filler neck. Therefore, by reducing the axial length of the filler neck 100 and increasing the cross-sectional area of the filler neck 100, the liquid level LL of the fuel FU supplied after the gas sensor GS detects the fuel FU is lowered. it can.

  In the fuel supply device FS of this embodiment, in order to increase the cross-sectional area of the filler neck 100, the cross-sectional area of the filler neck main body 110 is also increased. By increasing the diameter of the corrugated portion 111 into which the filler tube 40 is press-fitted, when the thickness of the corrugated portion 111 is the same, the strength of the corrugated portion 111 is reduced, but the reinforcing rib 151 reduces the external force to the inner periphery. In contrast, the strength of the corrugated portion 111 is improved. Further, in the fuel supply device FS of the present embodiment, the presence of the reinforcing rib 151 can reduce the clearance between the inner peripheral surface 110a of the filler neck main body 110 and the outer peripheral surface of the nozzle guide 150. Thereby, rattling between the filler neck main body 110 and the nozzle guide 150 can be prevented. Further, the inner diameter of the nozzle guide 150 can be set in accordance with the diameter of the oil supply nozzle NZ to be inserted, and rattling between the oil supply nozzle NZ and the nozzle guide 150 inserted into the nozzle guide 150 can be reduced. Further, in the fuel supply device FS of the present embodiment, as shown in FIG. 10, the diameter of the filler neck 100 can be increased by the reinforcing rib 151 even if the thickness is the same. Even if it reduces, the volume of the filler neck 100 is securable. Thereby, since the liquid level LL of the fuel FU after detecting the fuel FU supplied by the gas sensor GS of the fuel supply nozzle NZ can be lowered, the filler neck 100 can be reduced in size.

  Further, in the fuel supply device FS of the present embodiment, since the reinforcing rib 151 protrudes in the radial direction from the outer peripheral surface of the nozzle guide 150, the position of the reinforcing rib 151 with respect to the nozzle guide 150 can be easily manufactured as designed. . Further, it is not necessary to arrange the reinforcing rib 151 as a separate member different from the filler neck main body 110 and the nozzle guide 150, the number of parts constituting the filler neck 100 is reduced, and the fuel supply device FS is easy to manufacture.

  In the fuel supply device FS of the present embodiment, as shown in FIGS. 5 and 6, the downstream end of the nozzle guide 150 and the lower end 150 y of the reinforcing rib 151 are the downstream end of the filler neck main body 110. It is located on the fuel tank FT side, which is further downstream than the portion. Therefore, in the fuel supply device FS of the present embodiment, the reinforcing rib 151 of the nozzle guide 150 can support the end portion of the wavy portion 111 to which the most force is applied when the filler tube 40 is press-fitted into the wavy portion 111.

  Further, in the fuel supply device FS of the present embodiment, the protruding amount of the reinforcing rib 151 in the outer circumferential direction gradually decreases as it becomes downstream. Thereby, when the filler tube 40 is press-fitted into the wavy portion 111, the reinforcing rib 151 does not prevent the press-fitting, and the filler tube 40 is smoothly press-fitted into the wavy portion 111.

B. Variations:
In addition, this invention is not limited to the said embodiment, It can implement in a various aspect in the range which does not deviate from the summary, For example, the following deformation | transformation is also possible.

  The reinforcing rib may be partially provided with a notch as a fragile portion. In the filler neck having the reinforcing rib provided with the fragile portion, when an external force is applied, the reinforcing rib breaks before the other portion with the fragile portion as a center, so that breakage of the other portion can be reduced. The fragile portion is not limited to the shape of the notch, and can be variously modified.

  The present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each form described in the summary section of the invention are appropriately determined in order to solve part or all of the above-described problems. It is possible to replace or combine them. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 10 ... Opening and closing device of fuel tank 30 ... Check valve 40 ... Filler tube 40a ... Press-in part of filler tube 40b ... Middle part of filler tube 40c ... Inlet part of filler tube 50 ... Breather pipe 60 ... Flow control valve 100 ... Filler neck DESCRIPTION OF SYMBOLS 100P ... Fuel path 100Pa ... Merge part 110 ... Filler neck main body 110Pa ... Opening part 110a ... Inner peripheral surface of filler neck main body 111 ... Wave-like part 115 ... Breather port 115P ... Introduction path 150 ... Nozzle guide 150y ... Lower end of nozzle guide 151 ... Reinforcement rib 151e1 ... 1st reinforcement rib 151e2 ... 2nd reinforcement rib 152 ... Steam guide part 152a ... 1st downstream end of steam guide part 152b ... 2nd downstream end of steam guide part 153a ... 1st rectification rib 153b ... 2nd rectification | straightening Rib 154a ... corresponding hole first 154b ... corresponding hole second rib 155 ... sensor corresponding hole 155a ... expansion corresponding hole 156a ... first communication hole 156b ... second communication hole 158a, 158b, 158c ... space 180 ... base BP ... substrate FL ... oiling lid FLa ... lid body FLb ... Hinges FR ... Fueling chamber FS ... Fuel supply device FT ... Fuel tank FU ... Fuel GS ... Gas sensor LL ... Liquid level NZ ... Fuel nozzle NZP ... Nozzle guide path NZa ... Fuel nozzle tip OL1, OL2, OL3 ... Shaft

Claims (5)

A fuel supply device (FS),
A hollow fuel passage forming portion (110a) that forms a fuel passage (100P) through which the supplied fuel passes and a tube (40) for guiding the supplied fuel to the fuel tank (FT) are fitted. A filler neck body (110) having a fitting part (111)
A nozzle guide (150) disposed inside the fuel passage forming portion (110a) and guiding a fuel supply nozzle (NZ) for supplying fuel;
A rib (151) disposed between the filler neck body (110) and the nozzle guide (150) at a position facing the fitting portion (111) and in contact with the outer peripheral surface of the nozzle guide (150). A fuel supply device (FS). A fuel supply device (FS) according to claim 1,
The rib (151) is a fuel supply device (FS) which is integral with the nozzle guide (150) and protrudes from the outer peripheral surface of the nozzle guide (150). A fuel supply device (FS) according to claim 2,
The end (150y) of the nozzle guide (150) and the end of the rib (151) on the fuel tank (FT) side are more than the end on the fuel tank (FT) side of the filler neck body (110). A fuel supply device (FS) located on the fuel tank (FT) side. A fuel supply device (FS) according to claim 2 or claim 3, wherein
The rib (151e1, 151e2) is a fuel supply device (FS), which is a plurality of protrusions extending in parallel to the axial direction of the nozzle guide (150e). It is a fuel supply apparatus (FS) as described in any one of Claim 1- Claim 4, Comprising:
The fuel supply device (FS) is such that the protruding amount in the radial direction of the rib (151) at the end on the fuel tank (FT) side decreases as the fuel tank (FT) is approached.

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