JP2009220590A - Fuel oil supply device and ground wire connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a structure required for electrostatic discharge in a metal retainer included in a fuel oil supply device. <P>SOLUTION: A filler neck 150 guides a bare wire portion SL by a guide part 157 such that a bare portion distal end is superposed on a level different inclination 153S while retaining an insulation covered part of an ground wire SA by a retaining part 158, and is inserted to a body part 108 of a retainer 100. The retainer 100 is retained relative to the filler neck 150 since a calked piece 112 is pressed to an inner side at a side of the level difference inclination 153S, is bent and calking-engaged with an inclination surface of the level difference inclination 153S. By the calking-engagement of the calked piece 112, the retainer 100 is directly contacted with the bare wire portion SL of the ground wire SA and is connected to the ground wire SA. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fuel refueling device, and more particularly to grounding from a metal retainer to which a fuel cap is screwed.

  Such a fuel refueling device is used for refueling a fuel tank of a vehicle or the like, and in response to a request for weight reduction and improvement in the degree of freedom of the fuel flow path, the flow path is formed by a resin flow path forming member. Generally, the flow path forming member is mounted on a retainer made of metal. In this case, the flow path forming member is in the form of a filler pipe that forms all the flow paths from the retainer to the fuel tank, or is divided into a filler neck attached to the retainer and a pipe portion that follows the filler neck. The

  Since the retainer is made of metal, damage caused by contact with the oil gun during refueling can be avoided. However, since the mounting partner is made of resin, static electricity is charged in the metal retainer. For this reason, various techniques for grounding the static electricity charged on the retainer have been proposed (for example, Patent Document 1).

JP-A-8-300447

  In the above-mentioned patent document, a ground wire is connected to the connection terminal provided in the retainer to discharge static electricity to the ground. However, a so-called male and female metal terminal is used for connection between the ground wire and the connection terminal. ing. For this reason, the installation process of the metal terminal and the connection process of the male-female terminal were required.

  In view of the above problems, an object of the present invention is to simplify the structure required for electrostatic discharge in a metallic retainer of a fuel refueling device.

  In order to achieve at least a part of the above object, the present invention adopts the following configuration.

[Application 1: Fuel refueling device]
A fuel refueling device,
A metal retainer having a cap mounting portion to which a fuel cap is screwed and a cylindrical expanded portion connected to the cap mounting portion by expanding from the cap mounting portion;
A resin-made channel forming member that is inserted into the enlarged diameter portion of the retainer to form a downstream fuel channel;
A ground wire for discharging static electricity charged on the retainer;
The retainer is
A caulking piece that is bent toward the engaging portion of the flow path forming member on the outer peripheral wall of the flow path forming member and is caulked and engaged with the engaging portion to prevent the retainer and the flow path forming member from being pulled out. And the bare wire portion of the end portion of the ground wire is sandwiched between the engagement portion of the flow path forming member and the crimping piece engaged with crimping.

  In the fuel refueling device having the above configuration, when connecting the ground wire for electrostatic discharge charged on the metal retainer to the retainer, the bare wire portion at the end of the ground wire is connected to the engaging portion of the flow path forming member and the engagement member. The ground wire is directly brought into contact with the retainer by being clamped by the caulking piece of the retainer that is caulked and engaged with the joint. As a result, according to the fuel supply apparatus having the above configuration, a terminal for connecting the ground wire is not required, and the configuration related to the ground wire connection can be simplified. In addition, the ground wire can be connected to the retainer by a simple method of caulking and fitting the retainer piece to the engaging portion of the flow path forming member. In addition, since the terminal installation work and the male / female terminal connection work for ground wire connection can be omitted, man-hours can be reduced by reducing the number of parts, and cost can be reduced.

  The fuel refueling device described above can be configured as follows. For example, the engaging portion of the flow path forming member is used as a recess in the outer peripheral wall of the flow path forming member, and the caulking piece is bent so that the caulking piece of the retainer enters the recess. Can be combined. By doing so, it is only necessary to form a recess in the flow path forming member, which is convenient.

  In addition, the ground wire guide portion is provided on the outer peripheral wall of the flow channel formation member of the flow channel forming member, and the ground wire guide portion located on the downstream side of the flow channel from the engagement portion is arranged in the engagement portion. Thus, the bare wire portion of the ground wire can be guided to the engaging portion along the outer peripheral wall of the flow path forming member. In this way, since the bare wire portion of the ground wire is already guided to the holding portion when the bare wire portion of the ground wire is sandwiched between the engagement portion of the flow path forming member and the caulking piece of the retainer, the ground wire Can be reliably clamped between the engaging portion of the flow path forming member and the crimping piece of the retainer. Therefore, the reliability of connection of the ground wire can be increased.

  In this case, the bare wire portion can be guided to the engaging portion by the tapered inclined surface, with the ground wire guiding portion having a tapered inclined surface that has a smaller diameter as it approaches the engaging portion. In this way, since the guiding accuracy of the bare wire portion of the ground wire to the clamping portion is increased, the reliability of the connection of the ground wire is further increased.

  Further, an earth wire holding portion located on the downstream side of the flow path from the ground wire guide portion is arranged on the outer peripheral wall of the flow passage forming member of the flow passage forming member, arranged side by side on the ground wire guide portion. The insulating covering portion of the ground wire can be held by the holding portion. In this way, when the bare wire portion of the ground wire is sandwiched, the bare wire portion including the insulation coating portion can be held, so that the bare wire portion of the ground wire guided to the sandwiched portion can be securely held, After clamping, since the ground wire can be held on the outer peripheral wall of the flow path forming member, it is possible to prevent inadvertent dropping of the bare wire part from the clamping part.

[Application 2: Ground wire connection structure in fuel refueling system]
A ground wire connection structure in a fuel refueling device equipped with a resin flow path forming member that forms a fuel flow path in a metal retainer,
The retainer is
A cap mounting part to which the fuel cap is screwed; and
A cylindrical diameter-enlarged portion that is expanded in diameter from the cap mounting portion and connected to the cap mounting portion;
The retainer and the flow path forming member are prevented from being pulled out by being bent toward the engaging portion of the flow path forming member inserted into the enlarged diameter portion of the retainer and being engaged with the engaging portion. And a crimping piece
A gist is that a bare wire portion of an end portion of an earth wire for discharging static electricity charged in the retainer is sandwiched between the engaging portion of the flow path forming member and the caulking piece engaged with caulking. .

  Even with the ground wire connection structure having the above-described configuration, the above-described effects such as simplification of the configuration involved in the ground wire connection can be achieved.

  Hereinafter, embodiments of the present invention will be described based on examples. FIG. 1 is an explanatory view schematically showing an entire structure of a fuel refueling apparatus 10 as an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the fuel refueling apparatus 10 taken along line 2-2 in FIG. FIG.

  As shown in the figure, the fuel refueling device 10 includes a metal retainer 100 to which a fuel cap FC is to be attached, and a filler neck 150 with a gun guide member 130 interposed downstream thereof, which are left and right. Cover with the separately formed covers 170L and 170R. The metal retainer 100 is connected to a ground wire SA extending along the outer periphery from the filler neck 150 side as will be described later. The covers 170L and 170R cover the retainer 100 and form an air flow path therearound, and the right cover 170R includes a filter storage container 200 at the lower end thereof to remove dust in a purge pipe from a canister (not shown). In addition, since these covers are not directly related to the gist of the present invention, a detailed description thereof will be omitted.

  The retainer 100 includes a tapered sealing surface 102 on the opening end side thereof, and a lower side thereof serves as a cap mounting portion 106 and a cylindrical body portion 108. The cap mounting portion 106 is a screwed portion of the fuel cap FC, and has a male screw 104 that is screwed with a female screw of the cap. The body portion 108 is formed to have a diameter larger than that of the cap mounting portion 106, and is connected to the cap mounting portion 106 via a connection step portion 110. In addition, the retainer 100 includes three caulking pieces 112 at equal circumferential intervals on the lower end side of the body portion 108, and the caulking pieces 112 prevent a filler neck 150 attached to the body portion 108 as described later. Hold. In addition, the retainer 100 includes a notch 114 for positioning the filler neck 150 at the lower end of the body portion 108.

  The gun guide member 130 is a resin molded product, and is attached to the opening end of the filler neck 150 to guide a fuel gun (not shown) inserted into the opening of the retainer 100. The gun guide member 130 holds the cylindrical portion 132 on the upper end side by the guide portion 136 at the bottom portion 134 and, as shown in FIG. 2, guides a fuel gun (not shown) by recessing the inner wall of the guide portion 136 inward. The gun insertion hole 137 is formed by the depressed guide portion 136 while fulfilling the above. The bottom portion 134 is in contact with the inner peripheral wall of the filler neck 150 in almost the entire outer periphery thereof, thereby maintaining the posture of the gun guide member 130 in the filler neck 150 and thus maintaining the posture of the guide portion 136 that performs the guiding function. In this case, ribs 138 are formed between the bottom portion 134 and the guide portion 136 at appropriate intervals, so that the reliability of maintaining the posture is enhanced.

  The gun guide member 130 is provided with an opening 139 for bleeding air at the time of refueling in the guide portion 136, and a protruding piece 140 protruding from the outer periphery at the upper end of the cylindrical portion 132. Is provided with a bullet hook 142. In this embodiment, the projecting pieces 140 are formed at two locations on the upper end of the cylindrical portion, and the elastic hooks 142 are formed at two locations on the peripheral wall of the cylindrical portion. The protruding pieces 140 and the elastic hooks 142 are recessed in a filler neck 150 described later. In combination with the location, etc., the later-described rotation stop / prevention and circumferential mounting position of the gun guide member 130 are defined. This circumferential mounting position regulation is to prevent so-called reverse attachment, and in the circumferential direction of the cylindrical portion 132 in the gun guide member 130, the formation pitch of the bullet hooks 142 and the bullet hooks 142 has a predetermined relationship. To be achieved.

  The filler neck 150 is a resin-molded product, and is inserted into the body portion 108 of the retainer 100 to be mounted, and in order to form a flow path following the retainer 100, a tubular neck body 152 and an inlet pipe connecting tube portion 154 are formed. And a breather pipe connecting tube portion 156. The inlet pipe connecting cylinder portion 154 is connected to the inlet pipe IP and is connected to the lower end of the neck body 152, and guides fuel from the fuel gun to the inlet pipe IP. The breather pipe connecting tube portion 156 obliquely protrudes from the periphery of the opening 159 formed on the lower end side of the side wall of the neck body 152 and is connected to a breather pipe (not shown). The excess fuel vapor from a fuel tank (not shown) is passed through the opening 159. Then, it is led to the filler neck 150. In this case, the opening position of the opening 159 is set so as to face the guide portion 136 of the gun guide member 130 attached to the neck main body 152, so that surplus fuel vapor from the fuel tank flows to the back surface of the guide portion 136 and After colliding with the rib 138 once, it reaches the inside of the gun guide member 130 from the gun insertion hole 137 and the opening 139 of the gun guide member 130.

  The neck main body 152 has an upper end side of the main body as an outer diameter thick portion 153 that is inserted into the body portion 108 of the retainer 100 without a gap, and a protruding piece 140 of the gun guide member 130 is provided at the opening periphery of the upper end of the thick portion. Is provided with a through hole 162 into which the bullet hook 142 of the gun guide member 130 is inserted. The neck body 152 includes a ring-shaped recess 164 formed on the side wall surface of the thick portion 153 and a sealing O-ring 166, and has a protrusion 168 provided continuously with the thick portion 153. The protrusions 168 enter a notch 114 provided at the lower end of the retainer 100, thereby fulfilling a positioning function between the retainer 100 and the filler neck 150.

  In addition, the filler neck 150 is provided on the outer peripheral wall of the neck body 152 from the thick portion 153 side, and from the thick portion 153 side, the guide portion 157 that performs the guiding function of the bare wire portion SL of the ground wire SA, and the holding that performs the function of holding the ground wire SA. The unit 158 is provided side by side. The guide portion 157 and the holding portion 158 are formed so as to be aligned with the crimping piece 112 of the retainer 100 in a state where the retainer 100 and the filler neck 150 are positioned as described above by the protrusion 168. And the guide part 157 is located in the downstream of the level | step difference inclination 153S of the lower end side of the thick part 153, and has the taper recess 157R on the upper surface. The tapered recess 157R is formed as a tapered slope having a diameter that decreases toward the step slope 153S, and guides the bare wire portion SL toward the step slope 153S. The holding portion 158 is formed to protrude at a slightly narrower interval than the linear shape of the ground wire SA. When the ground wire SA is inserted between the both holding portions, the ground wire SA is depressed while the insulating coating portion of the ground wire SA is depressed. Hold. That is, since the ground wire SA is held by the holding portion 158 with the insulating coating portion, the bare wire portion SL is not inadvertently displaced from the tapered recess 157R of the guide portion 157.

  In addition, the fuel supply apparatus 10 includes a ground wire SA for electrostatic discharge charged in the retainer 100, and a bare wire portion SL at the tip thereof is connected to the retainer 100. The manner of holding the ground wire SA and the manner of connecting the bare wire portion SL will be described later.

  Next, how the retainer 100, the gun guide member 130, and the filler neck 150 are assembled will be described together with the holding / connection of the ground wire SA. FIG. 3 is an explanatory view showing an enlarged state of caulking engagement when the retainer 100 is assembled in the fuel supply apparatus 10, and FIG. 4 is an explanatory view schematically showing a state of holding the ground wire SA.

  Before attaching the filler neck 150 to the retainer 100, first, the gun guide member 130 is attached to the filler neck 150. That is, the gun guide member 130 is inserted into the neck body 152 of the filler neck 150 from the bottom 134 side. In this case, the outer diameters of the cylindrical portion 132 and the bottom portion 134 of the gun guide member 130 are regulated so that they can be inserted into the neck body 152 and no unintentional rattling occurs inside the neck body 152. In the process of inserting the gun guide member 130, the bullet hook 142 is retracted in contact with the inner wall of the neck body 152, but when the bullet hook 142 reaches the through hole 162 of the filler neck 150, the bullet hook 142 is bulleted. It enters the through hole 162. In this state, even in the protruding piece 140 of the gun guide member 130, it enters the recess 160 of the filler neck 150. Accordingly, as shown in FIG. 2, the gun guide member 130 is surrounded by the filler neck 150 with its upper end being substantially flush with the upper end of the filler neck 150, and the protruding piece 140 into the recess 160. Rotation and removal of the gun guide member 130 with respect to the filler neck 150 are made by the entry of the elastic hook 142 and the penetration hook 142 into the through hole 162. In this case, the guide portion 136 of the gun guide member 130 and the rib 138 are opposed to the opening 159 of the breather pipe connecting cylinder portion 156 as described above.

  As described above, the filler neck 150 that surrounds and is attached to the gun guide member 130 is inserted into the body portion 108 of the retainer 100. As a pre-stage of this insertion, as shown in FIG. 4, the insulating coating portion of the ground wire SA is inserted into the holding portion 158 of the filler neck 150, and the bare wire portion SL is guided by the guide portion 157. Therefore, the filler neck 150 is configured so that the bare wire portion SL is guided by the tapered recess 157R of the guide portion 157 while the ground wire SA is held by the holding portion 158 so that the leading end of the bare wire portion overlaps the step slope 153S. Then, it is inserted into the body portion 108 of the retainer 100. The filler neck is inserted such that the protrusion 168 of the filler neck 150 enters the notch 114 of the retainer 100, and the upper end of the thick portion 153 of the filler neck 150 is close to the connecting step 110 of the retainer 100. Alternatively, it comes into contact. Thereafter, the caulking piece 112 of the retainer 100 is pressed and bent inward toward the step slope 153S. As a result, the crimping piece 112 is caulked and engaged with the inclined surface of the step inclination 153S so that the tip thereof is pressed against the step inclination 153S, so that the retainer 100 is retained from the filler neck 150. As a result, the gun guide member 130 is clamped between the connection step portion 110 of the retainer 100 and the upper end portion of the filler neck 150 (specifically, the thick portion 153) after the filler neck 150 is prevented from rotating and withdrawn. Then, the retainer 100, the gun guide member 130, and the filler neck 150 become an integrated sub-assembly product.

  In this case, as described above, the bare wire portion SL of the ground wire SA is guided by the guide portion 157 so as to overlap the step slope 153S, and the formation portion of the guide portion 157 and the holding portion 158 is the caulking member 112. It matches the joint. Therefore, by the caulking engagement of the caulking piece 112, the retainer 100 sandwiches the bare wire portion SL between the step inclination 153S and the caulking piece 112 that is caulking engagement with the inclined surface of the inclination. That is, the ground wire SA is connected to the metal retainer 100. When the fuel filler 10 is in the form of the above-described sub-assembly, the other end of the ground wire SA is free. However, when the fuel filler 10 is installed in a vehicle (not shown), it is connected to the vehicle body or the like. Is done.

  As described above, in the fuel supply apparatus 10 of the present embodiment, when connecting the ground wire SA for electrostatic discharge charged on the metal retainer 100 to the retainer 100, the bare wire portion SL at the end of the ground wire is formed. The ground wire SA is directly brought into contact with the metal retainer 100 by being sandwiched between the step inclination 153S of the filler neck 150 and the caulking piece 112 of the retainer 100 that is caulked and engaged with the inclined surface of the inclination. As a result, according to the fuel refueling device 10 of the present embodiment, the connection of the ground wire SA to the retainer 100 eliminates the need for a metal terminal that has been conventionally required, and simplifies the configuration involved in the ground wire connection. Can be achieved. Moreover, the earth wire SA can be connected to the retainer 100 by a simple method of caulking and fitting the caulking piece 112 of the retainer 100 to the step slope 153S of the filler neck 150, which is convenient. In addition, since the terminal installation work and the male / female terminal connection work can be omitted when the ground wire SA is connected, man-hours can be reduced by reducing the number of parts, and cost can be reduced.

  In this embodiment, the guide portion 157 located on the downstream side of the flow path from the step inclination 153S is provided on the outer peripheral wall of the neck main body 152 of the filler neck 150. The guide portion 157 has the taper recess 157R that the bare wire portion SL at the tip of the ground wire SA is guided to the step slope 153S along the outer peripheral wall of the neck body 152, and the bare wire portion SL is superimposed on the step slope 153S. State. Then, the bare wire portion SL that overlaps the step slope 153S is sandwiched between the step slope 153S and the crimping piece 112. That is, according to the fuel supply device 10 of the present embodiment, the bare wire portion SL that has already been guided is sandwiched at the sandwiched portion between the step slope 153S of the filler neck 150 and the caulking piece 112 of the retainer 100. Can be securely held between the step inclination 153S and the crimping piece 112. Therefore, the reliability of the ground wire connection to the retainer 100 can be improved.

  Moreover, when guiding the bare wire portion SL as described above, since the tapered recess 157R is a tapered slope whose diameter becomes smaller as it approaches the step slope 153S, the bare wire portion SL is surely guided by the step slope 153S. Can be. Therefore, since the guiding accuracy of the bare wire portion SL of the ground wire SA to the sandwiched portion is increased, the ground wire can be connected with higher reliability.

  In addition, in the fuel supply device 10 of the present embodiment, the holding portion 158 is provided on the outer peripheral wall of the neck body 152 of the filler neck 150 on the downstream side of the flow path from the guide portion 157. The wire SA is held by the insulating coating portion. Therefore, when the bare wire portion SL that has undergone the caulking engagement of the caulking piece 112 is clamped, the bare wire portion SL including the insulation coating portion of the ground wire SA can be held, so that the guide has been guided to the holding location. The bare wire portion SL can be securely held. In addition, since the ground wire SA can be held on the outer peripheral wall of the neck main body 152 after the pinching, the bare wire portion SL can be prevented from being accidentally dropped from the pinching portion. Furthermore, even when the filler neck 150 is attached to the retainer 100, the bare wire portion SL including the insulating coating portion of the ground wire SA can be held, so that the ground wire SA can be attached to the filler neck 150 in the attaching operation. Workability is improved without getting in the way.

  Further, in the present embodiment, the retainer 100 covers the bare wire portion SL from the outside at the lower end periphery of the body portion 108, so that a foreign object collision to the bare wire portion SL can be prevented, and disconnection caused by this collision can be suppressed. .

  Next, another embodiment of the fuel supply device will be described. In the above-described embodiment, the engagement target of the crimping piece 112 is the step inclination 153S of the filler neck 150. However, the engagement target may be a single recess. FIG. 5 is an explanatory view showing the fuel oiling device 10A in a form in which the caulking piece 112 is caulked and engaged with the recess 153R, with the main parts disassembled, and FIG. 6 is a view corresponding to FIG. 3 and the caulking piece to the recess 153R. It is explanatory drawing which expands and shows the mode of 112 crimping engagement.

  In this fuel supply apparatus 10 </ b> A, the filler neck 150 </ b> A has a recess 153 </ b> R that is depressed at a connecting portion between the thick wall portion 153 and the neck body 152. The recess 153R is formed in a V-shape when viewed in the vertical direction in the drawing, that is, the fuel flow path axis direction, and the formation position is the position of the caulking engagement portion of the caulking piece 112, like the guide portion 157 described above. It is downstream. In the caulking engagement of the caulking piece 112 in the fuel supply apparatus 10A, the bare wire portion SL of the ground wire SA is guided by the guide portion 157 and along the body portion 108 of the retainer 100 on the opening end side of the recess 153R. It extends. In this state, the caulking piece 112 of the retainer 100 is bent so as to enter the recess 153R and is caulked and engaged with the recess 153R.

  By the caulking engagement of the caulking piece 112, the bare wire portion SL is pushed to the bottom side of the recess 153R following the bending of the caulking piece 112, and is held between the recess 153R and the caulking piece 112, and the retainer 100 is grounded. Connected with SA. Therefore, the above-described fuel supply apparatus 10A is simple because it is only necessary to form the single recess 153R in the filler neck 150A. Further, the caulking engagement of the caulking piece 112 to the recess 153R in this manner is often used for retaining the metal retainer and the resin filler neck in the existing fuel supply apparatus. For this reason, the earth wire SA is directly connected to the retainer 100 by a simple modification in which a guide portion 157 and a holding portion 158 are added downstream of the caulking engagement portion of the caulking piece 112, specifically downstream of the recess 153R. A connected fuel supply device can be obtained.

  FIG. 7 is a view corresponding to FIG. 5 and is an explanatory view showing a fuel refueling apparatus 10B of another embodiment in an exploded manner with respect to the main components. FIG. 8 is a view corresponding to FIG. It is explanatory drawing which expands and shows the mode of a match. As shown in the figure, this fuel supply apparatus 10B is characterized in that the body portion 108B to which the filler neck 150A is attached is formed on the outer peripheral side of the male screw 104 to which the fuel cap FC is attached.

  In this fuel supply apparatus 10B, the filler neck 150B extends the upper end of the thick portion 153 from the male screw 104 to the connecting portion of the retainer 100B from the male screw 104 to the body portion 108B. Let it be a gun guide part 105 that replaces the guide member 130. Even in the fuel supply device 10B, the caulking piece 112B of the retainer 100B is caulked and engaged with the recess 153R of the filler neck 150A, whereby the bare wire portion SL of the ground wire SA is sandwiched, and the retainer 100B is grounded. Connect line SA directly. Therefore, the above-described effects can be achieved also by the fuel supply apparatus 10B described above.

  As mentioned above, although the embodiment of the present invention has been described in the embodiments, the present invention is not limited to the above-described embodiments and modifications, and can be implemented in various modes without departing from the gist thereof. Is possible. For example, the filler neck 150 is provided at the upper end in a state of surrounding the gun guide member 130, but the gun guide member 130 is omitted, and the guide portion 136 and the like in the gun guide member 130 are formed on the inner wall side of the filler neck 150. It can also be done. In the above embodiment, the flow path to the fuel tank is formed by the filler neck 150 and the inlet pipe IP connected to the filler neck 150. However, the retainer 100 is directly attached to the upstream end of the inlet pipe. You can also

It is explanatory drawing which decomposes | disassembles and shows roughly the whole structure of the fuel supply apparatus 10 as an Example of this invention. It is sectional drawing which fractures | ruptures and shows the fuel supply apparatus 10 by the 2-2 line in FIG. FIG. 3 is an explanatory view showing an enlarged state of caulking engagement of a retainer 100 in the fuel supply device 10. It is explanatory drawing which shows typically the mode of holding | maintenance of earth wire SA. FIG. 10 is an explanatory view showing a main part of a fuel refueling device 10A in a form in which a caulking piece 112 is caulked and engaged with a recess 153R. FIG. 4 is an explanatory view showing an enlarged state of the caulking engagement of the caulking piece 112 to the recess 153R, corresponding to FIG. 3. FIG. 6 is an explanatory view of a fuel refueling apparatus 10B according to another embodiment, disassembled with respect to main components, corresponding to FIG. 5. FIG. 7 is an explanatory view showing, in an enlarged manner, the state of caulking engagement of the caulking piece 112B to the recess 153R, corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 10A, 10B ... Fuel supply apparatus 100 ... Retainer 100B ... Retainer 102 ... Sealing surface 104 ... Male screw 105 ... Gun guide part 106 ... Cap mounting part 108 ... Body part 108B ... Body part 110 ... Connection step part 112 ... Caulking piece 112B: Caulking piece 114 ... Notch 130 ... Gun guide member 132 ... Cylindrical part 134 ... Bottom part 136 ... Guide part 137 ... Gun insertion hole 138 ... Rib 139 ... Opening 140 ... Projection piece 142 ... Bullet hook 150 ... Filler neck 150A ... Filler Neck 150B ... Filler neck 152 ... Neck body 153 ... Thick part 153R ... Recess 153S ... Step slope 154 ... Inlet pipe connecting cylinder 156 ... Breaser pipe connecting cylinder 157 ... Guide part 157R ... Taper recess 158 ... Holding part 159 ... opening 160 ... recess 162 ... through Holes 164 ... annular recess 166 ... O-ring 168 ... projection 170L ... Cover 170R ... cover 200 ... filter container SA ... ground wire FC ... fuel cap SL ... bare wire site IP ... inlet pipe

Claims (6)

A fuel refueling device,
A metal retainer having a cap mounting portion to which a fuel cap is screwed and a cylindrical expanded portion connected to the cap mounting portion by expanding from the cap mounting portion;
A resin-made channel forming member that is inserted into the enlarged diameter portion of the retainer to form a downstream fuel channel;
A ground wire for discharging static electricity charged on the retainer;
The retainer is
A caulking piece that is bent toward the engaging portion of the flow path forming member on the outer peripheral wall of the flow path forming member and is caulked and engaged with the engaging portion to prevent the retainer and the flow path forming member from being pulled out. A fuel supply device that sandwiches a bare wire portion of an end portion of the ground wire between the engagement portion of the flow path forming member and the crimping piece that is crimped.   2. The fuel supply apparatus according to claim 1, wherein the retainer is bent so that the caulking piece enters a recess that the flow path forming member has as the engaging portion and is caulked and engaged with the recess. 3. The fuel refueling device according to claim 1 or 2,
The flow path forming member includes, on the outer periphery wall of the flow path forming member, a ground wire guide portion positioned on the downstream side of the flow channel from the engaging portion, arranged in the engaging portion,
The ground wire guide portion guides the bare wire portion of the ground wire to the engagement portion along the outer peripheral wall of the flow path forming member.   The fuel supply apparatus according to claim 3, wherein the ground wire guide portion has a tapered slope whose diameter decreases toward the engagement portion, and the bare wire portion is guided to the engagement portion by the taper slope. The fuel refueling device according to claim 3 or 4, wherein
The flow path forming member is provided with an earth wire holding part positioned on the downstream side of the flow path from the ground wire guide part on the ground line guide part on the flow path forming member outer peripheral wall,
The ground wire holding portion holds an insulation covering portion of the ground wire. A ground wire connection structure in a fuel refueling device equipped with a resin flow path forming member that forms a fuel flow path in a metal retainer,
The retainer is
A cap mounting part to which the fuel cap is screwed; and
A cylindrical diameter-enlarged portion that is expanded in diameter from the cap mounting portion and connected to the cap mounting portion;
The retainer and the flow path forming member are prevented from being pulled out by being bent toward the engaging portion of the flow path forming member inserted into the enlarged diameter portion of the retainer and being engaged with the engaging portion. And a crimping piece
The bare wire portion at the end of the ground wire for discharging static electricity charged in the retainer is sandwiched between the engagement portion of the flow path forming member and the crimping piece engaged with crimping. Wire connection structure.

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