JP2017013779A - Fuel supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance effectiveness in preventing suction of fuel through a filler pipe.SOLUTION: A fuel supply device FS supplies fuel supplied from an oil supply port FC to a fuel tank FT through a filler pipe FP. At an arrangement position for the filler pipe FP is held a lattice member 10 for preventing fuel suction which can be installed into a fuel pipe passage Tr that the filler pipe FP forms and be moved along the fuel pipe passage, and the arrangement position SP is set to be higher in a vertical direction than fuel liquid level in the filler pipe.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fuel supply apparatus.

  The fuel supply device feeds fuel supplied from a fuel supply port to a fuel tank through a filler pipe. The fuel filler port is normally closed by a lid, but an illegal act of removing the lid and inserting a small-diameter tube into the filler pipe from the fuel filler port and sucking fuel through the small-diameter tube can be performed. In order to cope with such an illegal act, a configuration is known in which a lattice member is disposed in the vicinity of a connection portion between a fuel tank and a filler pipe (Patent Document 1).

JP 2014-19413 A

  The fuel supply apparatus disclosed in the above-mentioned patent document is excellent in that the fuel in the fuel tank can be prevented from being directly sucked by the small-diameter tube because the small-diameter tube reaches only the lattice member. By the way, the path trajectory from the fuel filler opening to the fuel tank, the combination of each member constituting the fuel pipe, and the like vary depending on the vehicle design, the arrangement of the devices around the fuel tank, the arrangement position of the filler opening, and the like. Therefore, it is not always possible to regularly dispose a fuel suction preventing member called a lattice member in the vicinity of the connection point between the fuel tank and the filler pipe. For these reasons, a device for increasing the degree of freedom in disposing the fuel suction preventing member has been demanded.

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

  (1) According to one form of this invention, a fuel supply apparatus is provided. This fuel supply device includes a filler pipe that feeds fuel supplied from a fuel filler port to a fuel tank, and a suction prevention for fuel suction prevention that is held at a location in the middle of a fuel pipe formed by the filler pipe. And the suction preventing member has a shape that can be inserted into the fuel line from the fuel filler opening to the arrangement location.

  In the fuel supply device of this embodiment, the suction prevention member has a shape that can be inserted from the fuel filler opening to the installation location when holding the suction prevention member at the installation location. The arrangement location can be determined according to convenience. Therefore, according to the fuel supply apparatus of this embodiment, the suction preventing member can be disposed at a location in the middle of the fuel conduit with a high degree of freedom. Further, in the fuel supply device of this embodiment, since the suction prevention member can be held from the fuel filler port to the placement location and then held at the placement location, it is necessary to divide the filler pipe when holding the suction prevention member at the placement location. In addition, there is no need for a pipe body for pipe connection at the filler pipe dividing point. Therefore, according to the fuel supply device of this embodiment, connection using the pipe body of the divided filler pipe and assembly of the suction preventing member are not required, and therefore the number of man-hours can be reduced.

  (2) In the fuel supply device of the above aspect, the disposition location may be a position that is higher in the vertical direction than the ceiling wall of the fuel tank. This has the following advantages. Since the place where the suction preventing member is disposed is higher than the ceiling wall of the fuel tank in the vertical direction, even if the fuel is fully filled in the fuel tank, the fuel reaches the place where it is disposed in the fuel line. do not do. Therefore, according to the fuel supply device of this embodiment, even when the tube is inserted into the filler pipe for fuel suction, the suction of the tube at the place where the tube reaches the fuel in the fuel pipe is surely prevented. Therefore, fuel suction can be prevented with high effectiveness.

  (3) In the fuel supply device according to the above aspect, the suction preventing member may be engaged with an engaging portion formed in the fuel pipe at the arrangement location. This is desirable because it increases the effectiveness of holding the suction preventing member at the place of installation.

  (4) In the fuel supply device according to the aspect described above, the filler pipe is formed by expanding the engagement portion at the arrangement location by expanding the diameter of the fuel pipe, and the suction preventing member has a reduced diameter and an expanded diameter. It may be possible to insert from the oil filler opening to the disposition location in a reduced diameter state, expand the diameter after insertion to the engaging portion, and engage with the engaging portion. If it carries out like this, a suction prevention member can be held more certainly in an arrangement part.

  (5) In the fuel supply device according to the above aspect, the suction preventing member may be engaged with the engaging portion and thermally welded to the filler pipe. Even in this case, the suction preventing member can be more reliably held at the arrangement location.

  (6) In the fuel supply device of any one of the above forms, the suction preventing member may be a lattice member that partitions and forms a plurality of openings in a lattice shape. By so doing, the fuel suction can be easily and reliably prevented by making the openings formed in the lattice shape smaller than the tube inserted into the filler pipe for fuel suction.

  (7) According to the other form of this invention, the manufacturing method of a filler pipe is provided. The filler pipe manufacturing method is a method of manufacturing a filler pipe that feeds fuel supplied from a fuel filler port to a fuel tank, and is connected to a fuel pipe formed by the filler pipe from the fuel filler port to the fuel pipe line. A step (a) of preparing a suction preventing member for preventing fuel suction having a shape that can be inserted up to an arrangement place in the middle; and a step of incorporating the prepared suction preventing member into the fuel pipe of the straight tubular filler pipe (b) And a step (c) of moving the built-in suction prevention member along the fuel pipe of the straight tubular filler pipe and holding it in the fuel pipe at a predetermined holding position, and the suction prevention. A step (d) of bending the straight tubular filler pipe holding a member from the fuel tank so that the fuel pipe has a predetermined path trajectory, and in the step (c) , When the bent filler pipe is mounted on the fuel tank along the path trajectory, the arrangement location is expanded to the holding location of the straight tubular filler pipe, and the arrangement location is expanded. The suction preventing member is held in the fuel pipe at the holding position.

  According to the filler pipe manufacturing method of this embodiment, since the suction prevention member can be incorporated and moved along the fuel path in the straight tubular filler pipe, work related to holding the suction prevention member when the filler pipe is manufactured. As a result, the number of man-hours and the cost can be reduced.

  (8) In the filler pipe manufacturing method according to the above aspect, in the step (c), the location where the bent filler pipe is mounted on the fuel tank along the path trajectory is the fuel tank. It may be arranged such that the arrangement location is developed at the holding location in the straight tubular filler pipe, assuming that the location is higher than the ceiling wall in the vertical direction. In this way, since it is sufficient to incorporate the suction prevention member and move along the fuel path in the straight tubular filler pipe, the work related to holding the suction prevention member when manufacturing a filler pipe having a high fuel suction prevention effect is performed. Workability is improved, and man-hours and costs can be reduced.

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 the cross-sectional view of the perpendicular direction of the filler pipe of 1st Embodiment in the peripheral region of an arrangement | positioning location, and the planar view of the lattice member in the holding | maintenance state in an arrangement | positioning location. It is explanatory drawing which shows the shape of the lattice member before an assembly | attachment, and the mode of an assembly | attachment together. It is explanatory drawing which shows the assembly procedure of the lattice member to a filler pipe. It is explanatory drawing which shows the cross-sectional view of the perpendicular direction of the filler pipe of 2nd Embodiment in the peripheral region of an arrangement | positioning location, and the planar view of the lattice member in the holding | maintenance state in an arrangement | positioning location. It is explanatory drawing which shows the shape of the lattice member before an assembly | attachment, and the mode of an assembly | attachment together. It is explanatory drawing which shows the shape of the lattice member of 3rd Embodiment before an assembly | attachment, and the mode of an assembly | attachment together. It is explanatory drawing which shows the shape of the lattice member of 4th Embodiment before an assembly | attachment, and the mode of an assembly | attachment together. It is a top view which shows roughly the grating | lattice member of the modified example made into the helical suction prevention member. It is explanatory drawing which shows collectively the shape of the lattice member before the assembly | attachment which made the aspect of the engagement of the lattice member in an arrangement | positioning location into a different aspect, and the state of assembly | attachment. It is explanatory drawing which shows the mode of the engagement of the lattice member in the arrangement | positioning location after the bending process of a filler pipe. It is a perspective view of the lattice member of the 1st modification before assembling. It is a figure in the planar view of the lattice member shown in FIG. It is a figure in the cross sectional view along bending line AA of FIG. It is explanatory drawing which combines the shape of the lattice member before an assembly | attachment, and the mode of an assembly | attachment. It is a perspective view of the suction prevention member of the 2nd modification before assembling. It is a top view of the suction preventing member before assembly. It is a perspective view of the lattice member of the 3rd modification before assembling. It is a top view of the lattice member before an assembly | attachment.

A. First embodiment:
FIG. 1 is an explanatory view showing an outline of a fuel supply device FS for supplying fuel to a fuel tank FT of an automobile. The fuel supply device FS includes a filler neck FN, a filler pipe FP according to the first embodiment, a check valve TV, a breather pipe BP, a gas release adjusting valve BV, and a mounting member FE. The filler neck FN is fixed to the fuel supply portion (not shown) of the vehicle by the mounting member FE, and accepts insertion of the fuel gun FG into the fuel supply port FC. The filler neck FN and the fuel tank FT are connected by a filler pipe FP and a breather pipe BP. The filler pipe FP is an oil-resistant resin tube, and feeds fuel supplied from the fuel supply port FC to the fuel tank FT. The filler pipe FP is bent in advance so as to form a fuel pipeline from the fuel tank FT along a predetermined path trajectory and to be connected to the filler neck FN. Then, the bent filler pipe FP is held by the vehicle at an appropriate position in the middle of the route by a metal fitting (not shown) and attached to the fuel tank FT. The filler pipe FP can be expanded / contracted / curved in a certain range in a state where the filler pipe FP is mounted on the fuel tank FT along a predetermined path trajectory. In addition, the filler pipe FP is provided with a diameter SP in the middle of the pipe line at a position higher in the vertical direction than the ceiling wall FTt of the fuel tank FT to form an arrangement spot SP, which will be described later. The lattice member 10 is held. The fuel discharged from the fuel gun FG inserted into the fuel filler port FC is sent from the filler neck FN to the fuel tank FT through the filler pipe FP, and is supplied to the fuel tank FT via the check valve TV. The check valve TV prevents the backflow of fuel from the fuel tank FT to the filler pipe FP. The filler pipe FP may have a bellows structure at the bent portion.

  One end of the breather pipe BP is connected to the fuel tank FT via the gas release regulating valve BV, and the other end is connected to a breather port protruding from the filler neck FN. The gas release regulating 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 equal to or lower than a predetermined value, the gas release adjusting valve BV is closed and air is supplied from the fuel tank FT to the filler neck FN. No reflux will occur. When the internal pressure of the fuel tank FT becomes higher than a predetermined value, the gas release adjusting valve BV opens to circulate air from the fuel tank FT to the filler neck FN. The fuel in the tank contains fuel vapor, and this fuel vapor is guided to the fuel tank FT through the filler pipe FP together with the supplied fuel when refueling from the fuel gun FG. By the operation of the gas release regulating 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. 2 is an explanatory view showing a vertical sectional view of the filler pipe FP of the first embodiment in the peripheral region X of the arrangement place SP and a plan view of the lattice member 10 in the holding state at the arrangement place SP. In the cross-sectional view of FIG. 2, a cross section of the lattice member 10 along the bending line AA in the plan view of the lattice member 10 is shown.

  As shown in the drawing, the filler pipe FP has a part of the fuel pipe Tr that is enlarged in diameter at the location SP to form an engaging portion Kr, and the lattice member 10 is engaged with the engaging portion Kr. Hold. The lattice member 10 includes an outer body 12, a first lattice arm 13, a second lattice arm 14, a third lattice arm 15, a connecting arm 17, a first inner ring arm 18, and a second inner ring arm 19. Prepare. The outer body 12 is a belt-like curved body that fits and fits into the engagement portion inner peripheral wall of the engagement portion Kr of the filler pipe FP, and in the engaged / held state shown in FIG. Leave a gap between the ends. Each lattice arm of the first lattice arm 13 to the third lattice arm 15 extends inward from the outer body 12, and the second lattice arm 14 and the third lattice arm 15 are connected by a connecting arm 17 on the distal end side. . The first inner ring arm 18 intersects the second lattice arm 14 and the third lattice arm 15 and extends in a curved manner inside the outer body 12, leaving a gap with the first lattice arm 13. The second inner ring arm 19 extends from the first lattice arm 13 so as to be positioned as an extension of the curved shape of the first inner ring arm 18, leaving a gap between the second inner ring arm 19 and the first inner ring arm 18 extending from the connecting arm 17. The first lattice arm 13 includes a convex engagement piece 16 on the open end side, and this engagement piece 16 is engaged with the connecting arm 17 in the engaged / held state shown in FIG. The lattice member 10 is engaged with and held by the engaging portion Kr of the arrangement place SP as shown in FIG. 2, and each lattice arm of the first lattice arm 13 to the third lattice arm 15, The inner ring arm 18 and each inner ring arm of the second inner ring arm 19 divide the inside of the outer shell 12 in a lattice shape. Then, the lattice member 10 has a size that does not cause the passage of the fuel suction tube ST having a small diameter of about 5φ in each of the plurality of partitioned openings. For this reason, the lattice member 10 functions as a suction preventing member that prevents fuel suction by the fuel suction tube ST in a state where the lattice member 10 is engaged and held by the engaging portion Kr of the disposition place SP. The above-described lattice member 10 for preventing suction of fuel is disposed at the disposition location SP as follows.

  FIG. 3 is an explanatory view showing the shape of the lattice member 10 before assembly and the state of assembly. In FIG. 3, the shape transition of the lattice member 10 in plan view is associated with the assembled state on the right side, and the shape transition of sectional view of the lattice member 10 along the bending line AA in plan view is associated with the assembled state on the left side. Represent.

  In the single member form before assembling to the filler pipe FP, the lattice member 10 includes the second lattice arm 14 and the third lattice arm 15 connected by the connecting arm 17, the portion of the first inner ring arm 18 surrounded by both arms, and The part of the outer body 12 takes substantially the same shape as the state where it is engaged and held by the engaging part Kr of the arrangement part SP, and the engaging piece 16 of the first lattice arm 13 is engaged with the connecting arm 17. Not done. Therefore, the lattice member 10 includes a gap 12 c at both ends of the outer body 12, a gap between the first inner ring arm 18 and the first lattice arm 13 extending from the second lattice arm 14, and a first portion extending from the first lattice arm 13. 2 The first lattice arm 13 and the portion of the outer body 12 connected to the first lattice arm 13 are connected to the engaging portion of the arrangement point SP so that a gap between the inner ring arm 19 and the first inner ring arm 18 extending from the third lattice arm 15 is opened. The lattice member 10 as a whole is expanded in diameter from the state of being engaged and held by Kr. The lattice member 10 is a molded article of polyamide (PA) such as nylon-12 having oil resistance, and is shaped so as to be elastic in the outer body 12. Therefore, the lattice member 10 is expanded in diameter from the shape in the state where it is engaged and held to the engagement portion Kr of the arrangement place SP to the shape of the single product form, and from the shape of the single product form, the lattice member 10 The diameter can be reduced to a shape in a state of being engaged and held by the engaging portion Kr.

  In order to engage and hold the lattice member 10 with the engaging portion Kr of the arrangement place SP, first, the lattice member 10 is a single product, and the diameter of the outer body 12 is indicated by an arrow P in the drawing. A force is applied and the diameter-expanded portion is reduced. Specifically, the outer periphery 12 is held by a gripping jig, a robot hand, or an operator's finger (not shown), and the engagement piece 16 of the first lattice arm 13 is ridden on the connecting arm 17 to be the first. Close to the inner ring arm 18. When the diameter of the lattice member 10 is reduced to this state, as shown in a plan view of the lattice member 10 in the assembling process, the lattice member 10 is reduced in diameter until the gap 12c of the outer body 12 is almost eliminated, and the outer body 12 is annular. Thus, the outer diameter of the outer body 12 is equal to or smaller than the inner diameter of the fuel pipe Tr of the filler pipe FP. In this reduced diameter state, the lattice member 10 can be inserted and inserted into the fuel pipe Tr in the filler pipe FP from the pipe opening. Further, in this reduced diameter state, the lattice member 10 is elastically deformed and reduced in diameter, so that the lattice member 10 stores elastic energy for returning to the outer diameter direction.

  When the lattice member 10 is incorporated into the fuel conduit Tr in the reduced diameter state, the lattice member 10 is released from the force that has been reduced in diameter, and thus rebounds to return to the single shape shown in FIG. 12 is pressed against the inner peripheral wall of the fuel line Tr. With this pressing force, the lattice member 10 stays at the position where it is assembled. However, when a force (pushing force) that exceeds the resistance force resulting from the friction caused by the pressing force is received in the direction of the fuel line Tr, the lattice member 10 It moves along the fuel pipe Tr from the opening of the path Tr. That is, the lattice member 10 is configured to be incorporated into the fuel pipe Tr and to be moved along the fuel pipe Tr.

  After the assembling into the fuel pipe Tr, the lattice member 10 continuously receives the pushing force superior to the above-described resistance along the pipe direction of the fuel pipe Tr in the assembling process. It moves and eventually reaches the engaging portion Kr of the arrangement place SP. As described above, the engaging portion Kr has a groove shape whose diameter is larger than that of the fuel pipe Tr on the upstream side of the arrangement point SP, so that the lattice member 10 reaching the engaging portion Kr has a gap 12c. Is expanded so as to open from the state of the assembly process, and the outer body 12 is pressed against the inner peripheral wall of the engaging portion Kr. At this time, since the outer diameter of the outer body 12 is wider than the inner diameter of the fuel pipe Tr downstream of the engaging portion Kr, the movement of the lattice member 10 toward the fuel tank FT is prevented. As a result, the lattice member 10 engages with the engagement portion Kr of the arrangement location SP in a state where the outer body 12 is pressed against the inner peripheral wall of the engagement portion Kr, and remains at the arrangement location SP. That is, the lattice member 10 is expanded in diameter after being incorporated into the fuel conduit Tr in a reduced diameter state and moved to the engaging portion Kr along the fuel conduit Tr, and is engaged with the engaging portion Kr. Match. In this state, the assembling of the lattice member 10 is completed. In the assembled state, the fuel suction by the fuel suction tube ST is prevented as shown in FIG.

  FIG. 4 is an explanatory view showing a procedure for incorporating the lattice member 10 into the filler pipe FP. As shown in the figure, first, the filler pipe FP and the lattice member 10 are separately prepared. At this time, the filler pipe FP is a straight pipe filler pipe FPs molded or blow-molded into a straight pipe, and a predetermined holding portion SPs is formed in the straight pipe filler pipe FPs at the time of molding. As described above, the filler pipe FP forms the fuel pipe Tr with a predetermined path trajectory and is connected to the filler neck FN and attached to the fuel tank FT. The path trajectory is determined at the design stage. ing. Therefore, the positions occupied by the arrangement locations SP in the filler pipe FP taking a predetermined path trajectory are the first path Tr1, the second path Tr2, the third path Tr3, and the fourth path along the path trajectory from the tip of the filler pipe FP. It can be grasped by dividing it into a route Tr4. For this reason, arrangement | positioning location SP which occupies in the filler pipe FP which took the predetermined | prescribed path | route locus | trajectory is expand | deployed to the holding | maintenance location SPs in the straight pipe filler pipe FPs, A holding portion SPs is provided in a portion of the fourth route Tr4 that separates the sum of the respective route lengths of the third route Tr3 from the pipe tip.

  Next, the lattice member 10 is incorporated into the prepared straight pipe filler pipe FPs, specifically, the straight fuel pipe Tr of the pipe with a reduced diameter as described in FIG. Thereafter, a pushing force is applied to the lattice member 10 as described with reference to FIG. 3, and the lattice member 10 is moved to the holding point SPs along the straight fuel pipe Tr of the straight pipe filler pipe FPs. Is expanded and the lattice member 10 is held at the holding points SPs. In this way, the straight pipe filler pipe FPs holding the lattice member 10 is subjected to bending while heating, and the filler pipe FP in which the fuel pipe Tr becomes a predetermined path trajectory is obtained from the fuel tank FT. The obtained filler pipe FP is attached to a fuel tank FT (see FIG. 1) of a vehicle (not shown), and feeds fuel supplied from the fuel filler port FC to the fuel tank FT.

  As shown in FIG. 3, the fuel supply device FS of the first embodiment moves the lattice member 10 incorporated in the fuel pipe Tr formed by the filler pipe FP along the fuel pipe Tr to the place SP. The lattice member 10 is held at the arrangement place SP. As shown in FIG. 1, the arrangement location SP is a position that is higher in the vertical direction than the ceiling wall FTt of the fuel tank FT. Therefore, even if the fuel is fully supplied to the fuel tank FT, the fuel liquid in the fuel conduit Tr The position becomes lower than the arrangement place SP, and the fuel does not reach the arrangement place SP in the fuel pipe Tr. Therefore, according to the fuel supply device FS of the first embodiment, even if the fuel suction tube ST (see FIG. 2) is inserted into the filler pipe FP for fuel suction, the fuel suction tube ST is the fuel in the fuel line Tr. Can be reliably prevented by the lattice member 10 at the location SP, so that fuel suction can be prevented with high effectiveness.

  In the fuel supply device FS of the first embodiment, when the lattice member 10 is held at the arrangement location SP, the lattice member 10 is incorporated into the arrangement location SP from the fuel filler port FC and can be inserted and moved (see FIG. 3). ), The arrangement point SP can be appropriately determined at a position in the middle of the fuel pipe Tr. Therefore, according to the fuel supply device FS of the first embodiment, the arrangement location can be determined in accordance with the convenience of the vehicle design, the peripheral equipment arrangement of the fuel tank FT, etc. It can be arranged at a location SP in the middle of the Tr conduit. In FIG. 1, the arrangement spot SP is set to a position that is higher in the vertical direction than the ceiling wall FTt of the fuel tank FT. However, it may be set to a height that is about the same as the ceiling wall FTt or slightly lower than the ceiling wall FTt. In the first embodiment, the lattice member 10 is pressed against the inner peripheral wall of the engagement portion Kr as described above at the engaging portion Kr of the arrangement place SP, but the lattice member 10 is this inner peripheral wall. It may be accommodated in the engaging portion Kr in a state where it is not pressed against.

  In the fuel supply device FS of the first embodiment, since the lattice member 10 can be held at the disposition location SP after being moved along the fuel conduit Tr, the filler pipe is used to hold the lattice member 10 at the disposition location SP. It is not necessary to divide the FP, and a pipe body for pipe connection is not required at the filler pipe division point. Therefore, according to the fuel supply device FS of the first embodiment, connection using the pipe body of the divided filler pipe and assembly of the lattice member are not required, so that the man-hours can be reduced and the cost can be reduced accordingly. .

  In the fuel supply device FS of the first embodiment, the lattice member 10 is engaged with the engaging portion Kr formed in the fuel pipe Tr at the arrangement location SP. Therefore, according to the fuel supply device FS of the first embodiment, the lattice member 10 at the arrangement location SP can be held with high effectiveness, which is desirable.

  In the fuel supply device FS of the first embodiment, the engaging portion Kr at the location SP where the filler pipe FP is disposed is formed by expanding the diameter of the fuel pipe Tr. In addition, the fuel supply device FS of the first embodiment sets the lattice member 10 that can be reduced in diameter and expanded in a reduced diameter state, and incorporates the lattice member 10 in the fuel conduit Tr in this reduced diameter state, After moving along the pipe line Tr (see FIG. 3), the diameter of the lattice member 10 is increased, and the lattice member 10 is engaged with the engaging portion Kr. Therefore, according to the fuel supply device FS of the first embodiment, the lattice member 10 can be easily and easily held by the movement of the lattice member 10 to the arrangement place SP, and the lattice member 10 is more attached to the arrangement place SP. It can be held securely.

  In obtaining the fuel supply device FS of the first embodiment, in the first embodiment, the incorporation of the lattice member 10 into the fuel conduit Tr and the movement of the lattice member 10 along the fuel conduit Tr are performed in the straight pipe filler pipe FPs. The lattice member 10 was held at the holding portion SPs, and then the straight pipe filler pipe FPs was bent so that the fuel pipe Tr had a predetermined path trajectory. Therefore, according to the method for manufacturing the filler pipe FP of the first embodiment, workability related to the holding of the lattice member 10 is enhanced in manufacturing the filler pipe FP that is highly effective in preventing fuel suction by the fuel suction tube ST. Man-hour reduction and cost reduction can be achieved.

B. Second embodiment:
FIG. 5 is an explanatory diagram showing a vertical sectional view of the filler pipe FP of the second embodiment in the peripheral region X of the arrangement place SP and a plan view of the lattice member 10A in the holding state at the arrangement place SP. In the cross-sectional view of FIG. 5, a cross section of the lattice member 10A along the bending line AA in the plan view of the lattice member 10A is shown.

  As shown in the figure, the filler pipe FP has a part of the fuel pipe Tr that is enlarged in diameter at the location SP to form an engagement portion Kr, and the lattice member 10A is engaged with the engagement portion Kr. Hold. The lattice member 10 </ b> A includes an outer body 12, a first lattice arm 13, a second lattice arm 14, and a first inner ring arm 18. The outer body 12 is a curved body that fits into the engagement portion Kr of the filler pipe FP while being engaged with the engagement portion inner peripheral wall, and is held by the flexible arms 12k extending from the first lattice arm 13 and the second lattice arm 14. Has been. Both lattice arms of the first lattice arm 13 and the second lattice arm 14 extend inward from the flexible arm 12k holding the outer body 12, intersect at the center of the outer body 12 in a plan view, and the first inner ring arm In cooperation with 18, the inner side of the outer shell 12 is partitioned in a lattice shape so that the fuel suction tube ST does not pass through. For this reason, even in the lattice member 10A in the filler pipe FP of the second embodiment, the fuel suction by the fuel suction tube ST is prevented while being engaged and held by the engagement portion Kr of the arrangement location SP. . The above-described lattice member 10A for preventing fuel suction is disposed at the disposition location SP as follows.

  FIG. 6 is an explanatory view showing the shape of the lattice member 10A before assembly together with the state of assembly. In FIG. 6, the shape transition of the lattice member 10 </ b> A in plan view is associated with the assembled state on the right side, and the shape transition of sectional view of the lattice member 10 </ b> A along the bending line AA in plan view is associated with the assembled state on the left side. Represent.

  The lattice member 10A extends the flexible arm 12k so as to incline outward with the connection point with the first lattice arm 13 or the second lattice arm 14 as the center, and the flexible arm 12k can be directed toward the center of the outer body 12. Bendable. The lattice member 10A holds the outer body 12 with a flexible arm 12k that is inclined to the outside, and holds the outer body 12 in the engagement portion Kr of the arrangement place SP in the form of a single product before assembling to the filler pipe FP. The lattice member 10A as a whole is expanded in diameter from the state in which it is engaged and held. Even in the lattice member 10A, like the lattice member 10 described above, it is a molded product of polyamide (PA) such as nylon-12, and the flexible arm 12k is shaped to be elastic. Therefore, even in the lattice member 10A, the diameter is increased from the shape in the state of being engaged and held by the engaging portion Kr of the arrangement place SP to the shape of the single product, and the shape is arranged from the shape of the single product. The diameter can be reduced to a shape in a state of being engaged and held by the engaging portion Kr of the place SP.

  In engaging / holding the lattice member 10A with the engaging portion Kr at the location SP, first, the lattice member 10A is a single product, and the diameter of the outer body 12 is indicated by an arrow P in the drawing. Applying force, the flexible arm 12k is bent inward to shrink the outer body 12 in diameter. Specifically, the flexible arm 12k is held by a gripping jig, robot hand, or operator's finger (not shown), and the flexible arm 12k is bent inward. When the diameter of the lattice member 10A is reduced by the bending of the flexible arm 12k, the outer diameter of the outer body 12 is equal to or smaller than the inner diameter of the fuel pipe Tr of the filler pipe FP. In this reduced diameter state, the lattice member 10A can be incorporated into the fuel pipe Tr in the filler pipe FP from the pipe opening.

  When the lattice member 10A is incorporated into the fuel conduit Tr in the reduced diameter state, the lattice member 10A is released from the force that has been reduced in diameter, so that the flexible arm 12k returns to the single-piece shape shown in FIG. The outer body 12 is pressed against the inner peripheral wall of the fuel line Tr. With this pressing force, the lattice member 10A stays at the assembling position. However, when a force (pushing force) superior to the pressing force is received in the direction of the fuel conduit Tr, the lattice member 10A is fueled from the opening of the fuel conduit Tr. It moves along the pipeline Tr. That is, even in the lattice member 10 </ b> A, it can be incorporated into the fuel pipe Tr and can be moved along the fuel pipe Tr.

  After the assembly into the fuel pipe Tr, the lattice member 10A continuously receives the pushing force that exceeds the pushing force in the assembling process along the pipe direction of the fuel pipe Tr. It moves and eventually reaches the engaging portion Kr of the arrangement place SP. Since the engaging portion Kr has a diameter larger than that of the fuel pipe Tr on the upstream side as described above as described above, the lattice member 10A that has reached the engaging portion Kr is assembled by the flexible arm 12k. The outer shell 12 is expanded so as to open from the process state, and the outer shell 12 is expanded in diameter, and the outer shell 12 is pressed against the inner peripheral wall of the engaging portion Kr. In this state, the pushing force applied in the assembling process is released, so that the lattice member 10A is applied to the engaging portion Kr of the arrangement place SP in a state where the outer body 12 is pressed against the inner peripheral wall of the engaging portion Kr. Engage and stay at the location SP. That is, after the lattice member 10A is incorporated into the fuel conduit Tr in the reduced diameter state and moved along the fuel conduit Tr, the lattice member 10A expands after moving along the fuel conduit Tr to the engagement portion Kr. The diameter is engaged with the engaging portion Kr. In this state, assembling of the lattice member 10A is completed. In the assembled state, the fuel suction by the fuel suction tube ST is prevented as shown in FIG. In addition, assembly | attachment and movement of 10 A of lattice members mentioned above are performed with respect to the straight pipe filler pipe FPs similarly to the lattice member 10, and the filler pipe FP is obtained through the bending process of the straight pipe filler pipe FPs.

  Even with the fuel supply device FS using the filler pipe FP holding the lattice member 10A of the second embodiment described above, it is possible to achieve effects such as highly effective fuel suction prevention and man-hour reduction.

C. Third embodiment:
FIG. 7 is an explanatory view showing the shape of the lattice member 10B of the third embodiment and the state of assembly before assembly. In FIG. 7, the shape transition of the lattice member 10 </ b> B in plan view is associated with the assembled state on the right side, and the shape transition of sectional view of the lattice member 10 </ b> B along the bending line AA in plan view is associated with the assembled state on the left side. Represent.

  As shown in the figure, the filler pipe FP forms a step Kd at a disposition point SP in the middle of the fuel pipe Tr, and the fuel pipe Tr downstream of the step Kd has a small diameter corresponding to the step diameter. The lattice member 10B is engaged with and held by the step Kd. The location where the step Kd is formed is higher than the ceiling wall FTt of the fuel tank FT in the vertical direction. Alternatively, a part of the fuel pipe Tr may be bent to form the step Kd, and the upstream and downstream sides of the step Kd may be the fuel pipe Tr having the same inner diameter.

  The lattice member 10 </ b> B includes an outer body 12, a first lattice arm 13, a second lattice arm 14, and a first inner ring arm 18. The outer body 12 is an annular body that fits and fits on the inner peripheral wall of the fuel conduit Tr upstream from the step Kd, and is held by holding arms 12 h extending from the first lattice arm 13 and the second lattice arm 14. . Both lattice arms of the first lattice arm 13 and the second lattice arm 14 extend inward from the holding arm 12h that holds the outer body 12, intersect at the center of the outer body 12 in a plan view, and the first inner ring arm 18 In cooperation with, the inside of the outer shell 12 is partitioned in a lattice shape, and the fuel suction tube ST does not pass. For this reason, the lattice member 10B in the filler pipe FP of the third embodiment is engaged with and held by the step Kd located at the height of the arrangement place SP described above, and the fuel suction by the fuel suction tube ST is performed. To prevent. The above-described lattice member 10B for preventing fuel suction is disposed at the disposition location SP as follows.

  Like the lattice member 10 described above, the lattice member 10B is a molded product of polyamide (PA) such as nylon-12, and in a single product, the outer diameter of the outer body 12 is the fuel conduit Tr upstream of the step Kd. The diameter is slightly smaller than the inner diameter. Therefore, the lattice member 10B is gripped without being deformed by a gripping jig, a robot hand, or an operator's finger (not shown), and incorporated into the fuel conduit Tr. After releasing the grip, the lattice member 10B moves along the fuel conduit Tr from the opening of the fuel conduit Tr by its own weight or receiving a pushing force in the auxiliary conduit direction. That is, even in the lattice member 10 </ b> B, it can be incorporated into the fuel conduit Tr and can be moved along the fuel conduit Tr.

  After incorporation into the fuel pipe Tr, the lattice member 10B moves along the fuel pipe Tr, eventually reaches the step Kd, and is held at the step Kd at the arrangement point SP. In this state, the lattice member 10B is irradiated with laser light from the outer peripheral side of the filler pipe FP and melted by heat, and the outer surface of the outer body 12 that is in contact with the inner wall of the fuel pipe Tr has a detailed description of the fuel pipe Tr. Is thermally welded to the filler pipe FP. This heat-welded portion W becomes the outer surface of the holding arm 12 h in addition to the outer surface of the outer body 12. By this thermal welding, the lattice member 10B is held and fixed at the step Kd, and as shown in FIG. 7, the fuel suction by the fuel suction tube ST is prevented. In addition, assembly | attachment and movement of the above-mentioned lattice member 10B are performed with respect to the straight pipe filler pipe FPs similarly to the lattice member 10, and the filler pipe FP is obtained through the bending process of the straight pipe filler pipe FPs.

  The fuel supply device FS using the filler pipe FP holding the lattice member 10B of the above-described third embodiment can also provide effects such as highly effective fuel suction prevention.

D. Fourth embodiment:
FIG. 8 is an explanatory view showing the shape of the lattice member 10C of the fourth embodiment before assembly and the state of assembly. In FIG. 8, the shape transition of the lattice member 10 </ b> C in plan view is associated with the assembled state on the right side, and the shape transition of sectional view of the lattice member 10 </ b> C along the bending line AA in plan view is associated with the assembled state on the left side. Represent.

  As shown in the figure, the filler pipe FP forms an engaging portion Kr whose diameter is increased in an arc shape at an arrangement point SP in the middle of the fuel conduit Tr, and the outer shape of the engaging portion Kr is a spherical lattice. The member 10C is held.

  The lattice member 10 </ b> C includes an outer body 12, a first lattice arm 13, a second lattice arm 14, and a first inner ring arm 18. The outer body 12, and the first lattice arm 13 and the second lattice arm 14 are all formed into a belt-like ring and are engaged with each other to form a spherical lattice member 10C. The first inner ring arm 18 intersects the first lattice arm 13 and the second lattice arm 14 to partition the inside of the outer body 12 in a lattice shape, and does not pass through the fuel suction tube ST. Since the outer shell 12, the first lattice arm 13, and the second lattice arm 14 are all shaped so as to be elastic, the spherical lattice member 10C is deformed into an oval shape (reduced diameter), and the fuel Assembly insertion into the pipe line Tr and movement to the engaging portion Kr along the fuel pipe Tr are possible.

  In engaging / holding the lattice member 10C with the engaging portion Kr at the location SP, first, the lattice member 10C is a single product, and a force indicated by an arrow P in the drawing is applied to the outer body 12. Then, the lattice member 10C is deformed (reduced diameter) into an elliptical shape. Specifically, the first lattice arm 13 or the second lattice arm 14 is held between a gripping jig, a robot hand, or an operator's finger (not shown), and these lattice arms are bent into an elliptical shape. When the lattice member 10C has a reduced diameter due to the bending of the lattice arms, the outer diameter of the outer body 12 is equal to or smaller than the inner diameter of the fuel pipe Tr of the filler pipe FP. In this reduced diameter state, the lattice member 10C is incorporated into the fuel conduit Tr in the filler pipe FP from the conduit opening, and thereafter is pushed and moved to the engaging portion Kr by a pushing force. If the pushing force is released after the movement to the engagement portion Kr is completed, the lattice member 10C is expanded in diameter so as to have a single spherical shape and is held by the arc-shaped engagement portion Kr.

  The fuel supply device FS using the filler pipe FP holding the lattice member 10C of the above-described fourth embodiment can also provide effects such as highly effective fuel suction prevention.

  In the lattice member 10C of the above-described fourth embodiment, the first lattice arm 13 or the second lattice arm 14 is a belt-like ring like the outer body 12, and therefore is engaged with the engaging portion Kr instead of the outer body 12. It is also possible to combine them. Therefore, in the posture when the lattice member 10C is assembled and inserted, the degree of freedom of the circumferential positions of the lattice member 10C in the vertical and horizontal directions is increased, so that the assembly and insertion work is facilitated.

E. Variations:
The present invention is not limited to the above-described embodiment, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features of the embodiments corresponding to the technical features in each embodiment described in the summary section of the invention are intended to solve part or all of the above-described problems, or part of the above-described effects. Or, in order to achieve the whole, it is possible to replace or combine as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

  In the embodiment described above, the lattice members 10, 10A, and 10B are assembled to the straight pipe filler pipe FPs. However, the lattice members 10, 10A, and 10B are incorporated into the filler pipe FP that has already been curved along a predetermined path trajectory. The lattice members 10, 10A, and 10B may be moved to the arrangement location SP along the path trajectory.

  The thermal welding of the lattice member 10B employed in the third embodiment is performed on the lattice members 10, 10A, and 10C that have been engaged and held in the engagement portion Kr in the first embodiment, the second embodiment, and the fourth embodiment. May be performed.

  In the lattice members 10, 10 </ b> A, 10 </ b> B, and 10 </ b> C of each of the above-described embodiments, the suction prevention in which the first inner ring arm 18 intersects the intersecting first lattice arm 13 and the second lattice arm 14 to form openings in a lattice shape. Although the members are configured so as not to pass through the fuel suction tube ST, other forms of suction prevention members may be used. For example, the outer body 12 that can be expanded and contracted is the outer body 12 shown in FIG. 3 that does not have the first inner ring arm 18 and the second inner ring arm 19. Is a separate lattice forming member, an opening forming member in which a plurality of rectangular openings are arranged in a line, a wire mesh shaped body that is shaped like a cone and held by a ring at the bottom of the cone, etc. A suction preventing member configured to overlap the outer body 12 engaged and held by Kr may be used. FIG. 9 is a plan view schematically showing a lattice member 10D of a modified example which is a spiral suction preventing member. The lattice member 10D holds the spiral inner ring arm 20 on the outer body 12 that can be expanded and contracted by having the gap 12c, and prevents the spiral inner ring arm 20 from passing through the fuel suction tube ST. .

  FIG. 10 is an explanatory view showing the shape of the lattice member 10E before assembling and the manner of assembling, in which the manner of engagement of the lattice members at the disposition locations SP is different, and FIG. 11 is a diagram of the bending of the filler pipe FP. It is explanatory drawing which shows the mode of engagement of the lattice member 10E in arrangement | positioning location SP after a process. This lattice member 10E is different from the lattice member 10 of the first embodiment only in that the outer peripheral body 12 is provided with interspersed engagement protrusions 12p on the outer periphery, and is inserted into the fuel conduit Tr in the same manner as the lattice member 10. And assembled. In this assembly process, the lattice member 10E presses the engagement protrusion 12p against the inner peripheral wall of the fuel conduit Tr, and when the lattice member 10E reaches the disposition location SP, the inner peripheral wall of the engagement portion Kr is expanded due to the diameter expansion of the outer shell 12. The engaging projection 12p is pressed against the mounting portion SP and remains at the arrangement place SP. In the subsequent bending process, the filler pipe FP is heated, and the inner wall of the pipe that forms the engaging portion Kr is softened by the heat at that time. Therefore, as shown in FIG. 11, the outer shell 12 is expanded in diameter so that the engaging protrusions 12p are buried in the inner peripheral wall of the pipe, and the lattice member 10E is engaged with the arrangement place SP. According to the lattice member 10E, the engagement of the lattice member 10E at the arrangement location SP can be further ensured. Instead of forming the engaging protrusions 12p in this way, the outer peripheral wall of the outer shell 12 is roughened, and the inner peripheral wall of the pipe of the engaging portion Kr softened by the heat during bending is used. The outer peripheral wall may be contacted with a large surface area. Roughening of the surface roughness can be realized by roughening the mold surface on which the lattice member 10 is formed.

  FIG. 12 is a perspective view of the lattice member 10F of the first modification before assembly. FIG. 13 is a plan view of the lattice member 10F shown in FIG. 14 is a cross-sectional view taken along the bending line AA of FIG.

  The lattice member 10F (FIG. 12) includes an outer body 12, an inner body 30, a first arm 31, a second arm 32, an inner ring arm 33, and a connecting arm 34 (FIG. 13). The lattice member 10 </ b> F is a molded product of polyamide (PA) such as nylon-12 having oil resistance, and is shaped so as to be elastic in the outer body 12. Similarly to the lattice member 10E, the lattice member 10F is an annular curved body that engages with the location SP of the fuel pipe Tr. A gap 12 c is formed at both ends along the bending direction of the outer body 12. By elastically deforming the outer body 12 so as to increase or decrease the gap 12c, the outer body 12 can be expanded and contracted. By reducing the diameter of the outer body 12 by elastic deformation, the outer body 12 has a shape that can be inserted from the fuel filler port FC to the arrangement point SP. The outer diameter of the outer body 12 before being assembled to the fuel pipe Tr is larger than the inner diameter of the fuel pipe Tr including the engaging portion Kr. As shown in FIGS. 12 to 14, the outer body 12 includes the engagement protrusions 12 p on the outer peripheral surface in the same manner as the lattice member 10 </ b> E (FIG. 10). Note that the lattice member 10F may not include the engagement protrusion 12p on the outer body 12.

  The inner body 30 is an annular member located inside the outer body 12. The inner body 30 is connected to the outer body 12 by a connecting arm 34 (FIG. 13). The inner ring arm 33 is an annular member located inside the annular inner body 30. The first arm 31 has one end connected to the inner peripheral surface of the inner body 30 and the other end connected to the outer peripheral surface of the inner ring arm 33. The second arm 32 is located on the opposite side of the first arm 31 with the inner ring arm 33 interposed therebetween. The second arm 32 has one end connected to the inner peripheral surface of the inner body 30 and the other end connected to the outer peripheral surface of the inner ring arm 33. The inner body 30, the first arm 31, the second arm 32, and the inner ring arm 33 form a plurality of openings (inner openings) in a lattice shape. In the state where the lattice member 10F is assembled to the fuel pipe Tr, the plurality of inner openings and the distance between the outer body 12 and the inner body 30 in the radial direction of the outer body 12 are larger than the diameter of the fuel suction tube ST. Is also small. This prevents the fuel suction tube ST from passing through the lattice member 10F.

  FIG. 15 is an explanatory diagram illustrating the shape of the lattice member 10F before assembly and the state of assembly. In FIG. 15, the shape transition in plan view of the lattice member 10F is shown in association with the assembled state on the right side, and the shape transition in sectional view of the lattice member 10F along the bending line BB in plan view is associated with the assembly state on the left side. Represent.

  In engaging / holding the lattice member 10F with the engaging portion Kr of the arrangement place SP, first, in the drawing, the outer body 12 is shown in the figure so as to reduce the gap 12c in a single product state before the lattice member 10F is assembled. A force indicated by an arrow P is applied. Specifically, a force is applied to the outer body 12 to reduce the interval 12c so that the outer diameter of the lattice member 10F is equal to or smaller than the inner diameter of the fuel pipe Tr of the filler pipe FP. Accordingly, the outer body 12 is deformed into an oval shape (reduced diameter), and can be assembled and inserted into the fuel conduit Tr and moved to the engaging portion Kr along the fuel conduit Tr. In order to reduce the diameter of the outer body 12, the outer body 12 may be held and held by a gripping jig, a robot hand, or an operator's finger (not shown), and the outer body 12 may be bent into an oval shape.

  In this reduced diameter state, the lattice member 10F is assembled from the pipe opening of the fuel pipe Tr. After the assembly, the lattice member 10F is pushed and moved by the pushing force to the engaging portion Kr. The pushing force is released after the movement to the engaging portion Kr is completed. When the lattice member 10F reaches the engaging portion Kr whose diameter is larger than that of the surrounding area, the outer body 12 is expanded by the elastic force. Thereby, the engagement protrusion 12p is pressed against the inner peripheral wall of the engagement portion Kr, and the lattice member 10F is held by the engagement portion Kr. In the subsequent bending process, the filler pipe FP is heated, and the inner peripheral wall of the fuel pipe Tr forming the engaging portion Kr is softened by the heat at that time. Thereby, similarly to the lattice member 10E shown in FIG. 11, the outer body 12 is expanded in diameter so that the engaging protrusions 12p are buried in the inner peripheral wall of the engaging portion Kr. Due to the diameter expansion of the outer shell 12, the lattice member 10F is more reliably engaged with the location SP. The lattice member 10F does not cause the fuel suction tube ST to pass through the first arm 31, the second arm 32, the inner ring arm 33, and the inner body 30 in a state where the lattice member 10F is incorporated in the engaging portion Kr of the arrangement place SP. An opening having a size is defined inside the outer body 12.

  Even with the fuel supply device FS using the filler pipe FP holding the lattice member 10F described above, effects such as fuel suction prevention with high effectiveness can be achieved.

  FIG. 16 is a perspective view of the suction preventing member 10G of the second modified form before assembly. FIG. 17 is a plan view of the suction preventing member 10G before assembly. The suction preventing member 10G is, for example, a polyamide molded product, like the lattice member 10. The suction preventing member 10 </ b> G includes a core body 37, a first spiral body 38, and a second spiral body 39. The core body 37 is a cylindrical member. The inner diameter of the core body 37 is smaller than the outer diameter of the fuel suction tube ST. The core body 37 may be a solid column. The first spiral body 38 is connected to the outer peripheral surface of the core body 37 and is pivoted about the core body 37. The second spiral body 39 is connected to a portion of the outer peripheral surface of the core body 37 that is different from the portion to which the first spiral body 38 is connected, and is swiveled around the core body 37. The first spiral body 38 and the second spiral body 39 constitute the outer body 12 that engages with the inner peripheral wall of the engaging portion Kr (for example, FIG. 8). By elastically deforming the first spiral body 38 and the second spiral body 39 so as to increase or decrease the distance in the radial direction of the outer shell 12 between the first spiral body 38 and the second spiral body 39, The outer diameter of the outer body 12 can be increased and reduced. For example, the outer body 12 is contracted by applying a force indicated by an arrow P shown in FIG. 17 to the outer body 12. By reducing the diameter of the suction preventing member 10G, a shape that can be inserted from the fuel filler port FC to the arrangement point SP is obtained. In a state where the suction preventing member 10G is assembled to the fuel conduit Tr, the distance between the first spiral body 38 and the second spiral body 39 in the radial direction of the outer shell 12 is smaller than the diameter of the fuel suction tube ST. Thereby, it is possible to prevent the fuel suction tube ST from passing through this interval. The outer body 12 may have an engaging protrusion 12p (FIG. 10) on the outer peripheral surface.

  The fuel supply device FS using the filler pipe FP holding the suction prevention member 10G described above can also provide effects such as highly effective fuel suction prevention.

  FIG. 18 is a perspective view of the lattice member 10H according to the third modification before assembly. FIG. 19 is a plan view of the lattice member 10H before assembly. The lattice member 10 </ b> H is, for example, a polyamide molded product, similarly to the lattice member 10. The lattice member 10 </ b> H includes an outer body 12, an inner body 30, a first arm 31, a second arm 32, and an inner ring arm 33. The inner body 30, the first arm 31, the second arm 32, and the inner ring arm 33 are configured such that the length along the path of the fuel conduit Tr is the inner body 30, the first arm 31, and the second arm 32 of the lattice member 10 </ b> F. It differs only in that it is longer than the inner ring arm 33.

  The outer body 12 includes a first curved body 12A and a second curved body 12B. The first curved body 12A extends from the outer peripheral surface of the inner body 30 so as to be curved. The second curved body 12B extends so as to curve from a portion of the outer peripheral surface of the inner body 30 that is different from the portion to which the first curved body 12A is connected. By elastically deforming the outer body 12 so that the distance between the outer body 12 and the inner body 30 in the radial direction of the outer body 12 is increased or decreased, the outer body 12 can be expanded or reduced in diameter. . For example, the outer body 12 is contracted by applying a force indicated by an arrow P shown in FIG. 19 to the outer body 12. By reducing the diameter of the lattice member 10H, the shape can be inserted from the fuel filler port FC to the disposition location SP. In a state where the lattice member 10H is assembled to the fuel pipe Tr, the distance between the outer body 12 and the inner body 30 in the radial direction of the outer body 12 is smaller than the diameter of the fuel suction tube ST. A plurality of openings (inner openings) partitioned by the inner body 30, the first arm 31, the second arm 32, and the inner ring arm 33 are smaller than the diameter of the fuel suction tube ST. Accordingly, it is possible to prevent the fuel suction tube ST from passing through the lattice member 10H. The outer body 12 may have an engaging protrusion 12p (FIG. 10) on the outer peripheral surface.

  Even with the fuel supply device FS using the filler pipe FP holding the suction prevention member 10H described above, effects such as fuel suction prevention with high effectiveness can be achieved.

  In the above-described embodiment, the arrangement location SP is set to a position higher in the vertical direction than the ceiling wall FTt of the fuel tank FT (see FIG. 1), but the member in which the highest water level of the fuel in the tank is attached to the ceiling wall FTt, For example, if the gas release regulating valve BV or the like is defined, the arrangement location SP may be set higher in the vertical direction than the maximum water level of the fuel defined by such a member. Even in this case, fuel suction can be prevented with high effectiveness.

  In the lattice member 10 of the above-described embodiment, a resin-made lattice member is used. However, a lattice member 10A shown in FIG. 6 is formed, for example, using a shape memory alloy that undergoes a shape transition between a low temperature and a high temperature. Then, the flexible arm 12k may be positioned on the reduced diameter side, and the flexible arm 12k may be positioned on the expanded diameter side at high temperatures. Even in the filler pipe FP, a metal pipe may be used in addition to the resin pipe.

DESCRIPTION OF SYMBOLS 10, 10A-10F, 10H ... Lattice member 10G ... Suction prevention member 12 ... Outer body 12c ... Gap 12h ... Holding arm 12k ... Flexible arm 12p ... Engagement protrusion 12A ... 1st curved body 12B ... 2nd curved body 13 ... 1st lattice arm 14 ... 2nd lattice arm 15 ... 3rd lattice arm 16 ... engagement piece 17 ... connection arm 18 ... 1st inner ring arm 19 ... 2nd inner ring arm 20 ... spiral inner ring arm 30 ... inner body 31 ... 1st Arm 32 ... Second arm 33 ... Inner ring arm 34 ... Connecting arm 37 ... Core body 38 ... First spiral body 39 ... Second spiral body BP ... Breather pipe BV ... Gas release regulating valve FC ... Refueling port FE ... Mounting member FG ... Refueling gun FN ... Filler neck FP ... Filler pipe FPs ... Straight pipe filler pipe FS ... Fuel supply device FT ... Fuel tank FTt ... Ceiling wall Kd ... Step Kr ... Engagement part SP ... Installation place SPs ... Holding place ST ... Fuel Suction tube TV ... Check valve Tr ... Fuel line Tr1 ... First route Tr2 ... Second route Tr3 ... Third route Tr4 ... Fourth route W ... Thermal welding site

Claims (8)

A fuel supply device,
A filler pipe (FP) for feeding fuel supplied from the fuel filler port (FC) to the fuel tank (FT);
A suction preventing member (10) for preventing fuel suction, which is held at an arrangement point (SP) in the middle of the conduit of the fuel conduit (Tr) formed by the filler pipe (FP),
The fuel supply device, wherein the suction preventing member (10) has a shape that can be inserted into the fuel pipe (Tr) from the fuel filler opening (FC) to the arrangement location (SP).   2. The fuel supply device according to claim 1, wherein the arrangement location (SP) is a position higher in a vertical direction than a ceiling wall of the fuel tank.   The said attraction | suction prevention member (10) is engaging with the engaging part (Kr) formed in the said fuel pipe (Tr) in the said arrangement | positioning location (SP). Fuel supply system. The fuel supply device according to claim 3,
The filler pipe (FP) is formed by expanding the diameter of the fuel pipe (Tr) in the engagement portion (Kr) at the arrangement location (SP).
The suction-preventing member (10) can be reduced in diameter and expanded, and is inserted from the oil supply port (FC) to the arrangement location (SP) in a reduced diameter state, and the engaging portion (Kr The fuel supply device which expands the diameter after the insertion until and engages with the engaging portion (Kr).   The fuel supply device according to claim 3, wherein the suction preventing member (10) is thermally welded to the filler pipe (FP) by engaging with the engaging portion (Kd).   The fuel supply device according to any one of claims 1 to 5, wherein the suction preventing member (10) is a lattice member that partitions and forms a plurality of openings in a lattice shape. A method of manufacturing a filler pipe (FP) that feeds fuel supplied from a fuel filler port to a fuel tank,
Fuel suction prevention with a shape that can be inserted into the fuel pipe (Tr) formed by the filler pipe (FP) from the fuel filler opening (FC) to the disposition location (SP) in the middle of the pipe of the fuel pipe (Tr). A step (a) of preparing a suction preventing member (10) for use;
(B) incorporating the prepared suction preventing member (10) into the fuel pipe (Tr) of the straight pipe filler pipe (FP);
The built-in suction prevention member (10) is moved along the fuel pipe (Tr) of the straight tubular filler pipes (FPs), and the fuel pipe (Tr) at a predetermined holding location (SPs). And (c)
(D) bending the straight tubular filler pipes (FPs) holding the suction preventing member (10) from the fuel tank so that the fuel pipe (Tr) has a predetermined path trajectory. And
In the step (c), the arrangement location (SP) when the bent filler pipe (FP) is attached to the fuel tank along the path trajectory is designated as the straight tubular filler pipe (FPs). ) At the holding location (SPs) where the arrangement location (SP) is developed, and the suction prevention member (10) is held at the fuel conduit (Tr). Manufacturing method of filler pipe (FP).   In the step (c), the arrangement location (SP) when the bent filler pipe (FP) is attached to the fuel tank along the path trajectory is perpendicular to the ceiling wall of the fuel tank. The manufacturing method of the filler pipe (FP) according to claim 7, wherein the arrangement place (SP) is developed at the holding place (SPs) in the straight tubular filler pipe (FPs) as being located at a high position. .

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