JP5621455B2 - Fuel tank fueling part structure - Google Patents

Description

  The present invention relates to a fuel tank fueling portion structure.

  As a fueling part structure for fueling a fuel tank of an automobile or the like, Patent Document 1 describes a structure including a valve body that opens when a fueling gun is inserted into a fueling port. In Patent Document 1, the valve body is a so-called flapper valve.

  By the way, since the valve body opens toward the back side (fuel tank side) of the fuel filler port with the fuel gun inserted into the fuel filler port, the further interior of the fuel filler port is hidden by the valve body and the fuel gun. It cannot be seen from the oiler who is refueling outside the mouth member.

JP-A-8-142694

  In view of the above facts, an object of the present invention is to obtain a fuel tank fueling portion structure in which the on / off valve and the fuel gun can be seen from the fuel filler in a state where the fuel gun is inserted into the fuel filler port.

According to the first aspect of the present invention, a fuel filler member constituting a fuel filler port into which a fuel gun for fueling a fuel tank is inserted, an on-off valve capable of opening and closing the fuel filler port, and an outer periphery of the on-off valve The on-off valve is pivotable between an open position where the fuel gun is pressed and the side opposite to the arrangement position moves to the fuel tank side to open the fuel inlet, and a closed position which closes the fuel inlet. A rotation member for attaching to the fuel filler member, and provided on the on-off valve, and when the on-off valve is in the open position, contacts the fuel gun inserted into the fuel filler opening, and the on-off valve and the fuel gun A gap member that creates a gap therebetween , and opens on the fuel tank side of the open / close valve in the open position on the same side as the rotating member with respect to the center of the filler opening, and communicates with the filler opening A breather pipe .
According to a second aspect of the present invention, a fuel filler member constituting a fuel filler port into which a fuel gun for fueling a fuel tank is inserted, an on-off valve capable of opening and closing the fuel filler port, and an outer periphery of the on-off valve The on-off valve is pivotable between an open position where the fuel gun is pressed and the side opposite to the arrangement position moves to the fuel tank side to open the fuel inlet, and a closed position which closes the fuel inlet. A rotation member for attaching to the fuel filler member, and provided on the on-off valve, and when the on-off valve is in the open position, contacts the fuel gun inserted into the fuel filler opening, and the on-off valve and the fuel gun A gap member that creates a gap therebetween, and the gap member and the filler port member that are provided in the filler port member and sandwiched between the filler gun inserted into the filler port along the axial direction of the filler port member. Insert the refueling gun at the opposite position in the axial direction. It has a guide member for the inner and.

In these fuel tank refueling portion structures, an opening / closing valve is pivotally attached to a refueling port member by a revolving member. The fuel filler port is normally closed by an on-off valve, but when the fuel gun is inserted into the fuel filler port, the on-off valve is pressed by the fuel gun, and the side opposite to the position where the rotating member is disposed is the fuel tank side, that is, The on-off valve is rotated so as to move to the back side of the fuel filler opening, and the fuel filler opening is opened.

  The opening / closing valve is provided with a gap member, and when the opening / closing valve is in the open position, the opening / closing valve contacts the fuel gun inserted into the fuel filler port to create a gap between the opening / closing valve and the fuel gun. As described above, the gap between the on-off valve and the fueling gun allows the fueling person who is outside the fueling port to see the further back side of the fueling port. For example, when the fuel level rises to the vicinity of the filler opening during refueling, the fuel level can be visually confirmed.

In the first aspect of the present invention, in particular, the fuel tank is opened on the same side as the rotating member with respect to the center of the fuel filler port and on the fuel tank side with respect to the on-off valve in the open position. It has a breather pipe that communicates .

The breather pipe is open on the same side as the rotating member with respect to the center of the fuel filler port and on the fuel tank side of the open / close valve in the open position, and communicates with the fuel filler port. Therefore, the fuel that rises the breather pipe and flows into the fuel filler port from the gap formed between the on-off valve and the fuel gun can be visually observed at the opening of the breather pipe .
In the second aspect of the invention, in particular, the gap member and the filler port member are provided on the filler port member and sandwich the filler gun inserted into the filler port along the axial direction of the filler port member. A guide member for guiding the insertion of the fuel gun at a position facing in the direction perpendicular to the axis.
The guide member is provided at a position facing the gap member and the oil supply port member in the axial direction across the oil supply gun inserted into the oil supply port along the axial direction of the oil supply port member, and guides the insertion of the oil supply gun. Therefore, the fuel gun can be stably guided by the gap member and the guide member. It is also possible to hold the oiling gun inserted up to a predetermined position with the gap member and the guide member.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the gap member is in contact with the fuel gun at a plurality of locations in the circumferential direction of the fuel gun inserted into the fuel filler port. Yes.

  Therefore, the contact state can be stably maintained as compared with the structure in which the gap member is in contact with the fuel gun only at one place. Note that the “plurality of places” mentioned here includes two or more places in the circumferential direction, but also includes a case of contacting in a curved shape or a curved shape along the circumferential direction.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the gap member is a plurality of ribs that are separated from each other in the circumferential direction of the fueling gun inserted into the fueling port.

  Since the plurality of ribs are separated from each other in the circumferential direction of the fueling gun, a gap is generated between the ribs. Also by this gap, the oiler who is outside the fuel filler port can see the further back side of the fuel filler port, and the visibility is improved.

  Since the present invention has the above-described configuration, the interior of the on-off valve and the fuel gun can be viewed from the fuel supplier with the fuel gun inserted into the fuel filler port.

It is a perspective view shown from the outside which shows the fueling part structure of the fuel tank of one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1 showing a fuel tank fueling portion structure according to an embodiment of the present invention with a fuel gun inserted. FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2, illustrating a fuel tank fuel filler structure according to an embodiment of the present invention with a fuel gun inserted.

  FIG. 1 shows the appearance of a fuel tank fueling part structure (hereinafter simply referred to as “fueling part structure”) 12 of a fuel tank according to a first embodiment of the present invention. As can be seen from FIG. 1, in the present embodiment, a cap for closing the fuel filler opening is unnecessary, and a so-called capless structure is formed.

  A fuel tank (not shown) is connected to the lower end of a fuel supply inlet pipe 14 shown in FIG. 2, and a fuel supply structure 12 is applied to the upper part of the inlet pipe 14.

  The upper portion of the inlet pipe 14 is configured with a large-diameter portion 14B having a larger diameter than other portions of the inlet pipe 14, and a substantially cylindrical oil filler member 16 is attached to the upper end of the large-diameter portion 14B. Yes. The inside of the fuel filler member 16 and the large diameter portion 14B is a fuel filler 26 (the center is indicated by the center line CL), and the fuel gun 28 is inserted into the fuel filler 26 and the large diameter portion 14B from the opening 18 at the upper end. Thus, it is possible to supply fuel to the fuel tank.

  A flapper valve 20 is arranged at the upper portion of the fuel filler member 16, that is, at the opening 18 of the fuel filler port 26. The flapper valve 20 is rotatably attached to the fuel filler member 16 by a hinge 22 provided on the upper portion thereof. Then, the flapper valve 20 rotates between a closing position TP (a position indicated by a two-dot chain line) that closes the fuel inlet 26 and an open position HP (a position indicated by a solid line) that opens the fuel inlet 26. In the open position HP, the lower part of the flapper valve 20, that is, the side opposite to the side where the hinge 22 is arranged has moved greatly to the fuel tank side. A stopper projection 24 is formed on the inner surface of the fuel filler member 16, and the rotation range (open position) of the flapper valve 20 is limited to a predetermined range.

  A flapper valve spring (not shown) is wound around the hinge 22. The flapper valve spring urges the flapper valve 20 toward the closing position TP so that the oil supply port 26 is not opened carelessly. When the flapper valve 20 is pushed by the fuel gun 28 inserted from the opening 18, the flapper valve 20 moves (rotates) to the open position HP against the biasing force of the flapper valve spring.

  As can be seen from FIGS. 1 and 2, one or a plurality (two in this embodiment) of ribs 30 protrude from the outer surface 20 </ b> S of the flapper valve 20. The two ribs 30 extend in parallel to each other from the approximate center of the outer surface 20 </ b> S downward (near the outer periphery opposite to the hinge 22), and a gap 32 is formed between the ribs 30. The protruding length of the rib 30 (the protruding height measured from the outer surface 20S) gradually becomes longer (higher) toward the vicinity of the outer periphery, and the tapered portion 30T is formed. The interval between the two ribs 30 is shorter than the diameter of the tip portion of the fuel gun 28.

  As can be seen from FIG. 2, the position of the rib 30 is such that the flapper valve 20 comes into contact with the outer peripheral surface of the fueling gun 28 from above with the fueling gun 28 inserted into the fueling port 26 and the flapper valve 20 is in the open position HP. The valve 20 is positioned to be separated from the fuel gun 28. Therefore, in this state, a gap 34 is formed between the flapper valve 20 and the fuel gun 28 so that the fuel filler can visually recognize the back side of the fuel filler port 26 from the outside. In particular, in the present embodiment, since the gap 32 is formed between the two ribs 30, the visibility to the back side of the fuel filler opening 26 is higher than the structure without the gap 32.

  A guide projection 36 is formed on the inner surface of the fuel filler member 16 at a position facing the rib 30 when the flapper valve 20 is in the open position, with the inserted fuel gun 28 interposed therebetween. As can be seen from FIG. 3, the guide convex portion 36 is formed on the lower side of the inner surface of the fuel filler port member 16 over a substantially half circumference, and the central portion of the upper surface has an arc shape with the same curvature as the fuel gun 28. The support surface 36S is curved. As can be seen from FIG. 2, the surface on the opening 18 side of the guide projection 36 is a tapered surface 36 </ b> T that rises obliquely with respect to the insertion direction of the fuel gun 28.

  The upper end of the breather pipe 38 is connected to the large-diameter portion 14B of the inlet pipe 14 on the further back side than the flapper valve 20 at the open position HP. The breather pipe 38 is disposed on the same side as the hinge 22 with respect to the center (center line CL) of the fuel filler opening 26. The lower end of the breather pipe 38 is connected to a fuel tank (not shown), and has a function of returning the evaporated fuel at the time of fuel supply to the fuel tank from the fuel tank to the fuel supply port 26. Further, when the fuel tank is filled with fuel near the full tank, the liquid fuel may rise up the breather pipe 38 and return to the fuel filler 26.

  Next, the effect | action of the oil supply part structure 12 of this embodiment is demonstrated.

  Normally, as indicated by a two-dot chain line in FIG. 2, the flapper valve 20 receives the urging force of the flapper valve spring to maintain the closed position TP, and the fuel supply port 26 is closed.

  When refueling, the refueling gun 28 is inserted into the refueling port 26. At this time, as indicated by a two-dot chain line in FIG. 2, the position of the fueling gun 28 is determined by applying the tip of the fueling gun 28 to the two ribs 30. That is, the rib 30 serves as a guide when the flapper valve 20 is pressed by the fuel gun 28, and the insertability (ease of insertion and certainty) is improved.

  In particular, in the present embodiment, two ribs 30 are formed and contact the fuel gun 28 at two locations in the circumferential direction. Therefore, for example, compared to a configuration in which one rib is formed, the fuel gun 28 Inadvertent movement in the lateral direction is restricted. That is, the rib 30 acts as a guide when the fuel gun 28 is inserted, and the fuel gun 28 can be easily inserted.

  The biasing force of the spring for the flapper valve is set to be smaller than the pressing force acting from the fuel gun 28, and the flapper valve 20 pushed by the fuel gun 28 rotates to the open position HP. Insert into the back and refuel.

  In this way, the tip of the oil supply gun 28 is in contact with the rib 30 even while the oil supply gun 28 is being inserted into the oil supply port 26. Since the rib 30 guides the fuel supply gun 28, the insertability is improved.

  Further, in the fuel filler structure 12 of the present embodiment, the fuel gun 28 contacts the support surface 36 </ b> S of the guide projection 36 when the fuel gun 28 is inserted into the fuel filler 26. The oil supply gun 28 is restricted from inadvertent movement in the vertical direction by the rib 30 and the guide projection 36 (support surface 36 </ b> S), and this also facilitates insertion of the oil supply gun 28 into the oil supply port 26. Further, during insertion, the fuel supply gun 28 is maintained at the center CL of the fuel supply port 26 so that the rib 30 is surely in contact with the rib 30.

  In a state where the fueling gun 28 is inserted to a predetermined position of the fueling port 26 and is refueled, the tip of the rib 30 is in contact with the fueling gun 28, and therefore a predetermined gap between the flapper valve 20 and the fueling gun 28. 34 is configured. Therefore, the oiler outside the fuel filler port 26 can visually recognize the further back side of the flapper valve 20 and the fuel gun 28 through the gap 34 (see arrow G1). For example, when the fuel tank is full, the fuel level rises in the inlet pipe 14, and the raised level can be visually confirmed by the refueling person. In particular, since the gap 32 is also formed between the two ribs 30, the back side of the fuel filler opening 26 can be visually recognized through the gap 32.

  Moreover, in the oil supply part structure 12 of this embodiment, the upper end of the breather pipe 38 is connected further back than the flapper valve 20 when it exists in the open position HP. The breather pipe 38 is disposed on the same side as the hinge 22 with respect to the center (center line CL) of the fuel filler opening 26, so that the upper end of the breather pipe 38 can also be visually recognized through the gap 34. At the time of refueling, liquid fuel may rise in the breather pipe 38 and return to the inside of the refueling port 26 just before the tank is full, but the refueler can also visually recognize this fuel.

  During refueling, the refueling gun 28 is held so as to be sandwiched between the rib 30 and the support surface 36S of the guide projection 36. Since the tip of the oil supply gun 28 can be maintained at a fixed position, reliable and stable oil supply is possible.

  In the above description, two ribs 30 are cited as the gap member of the present invention, but the number of ribs 30 is not limited to two, and may be one or three or more. Further, the rib 30 may be configured to come into contact with a curved or curved surface at a portion having a spread in the circumferential direction around the fueling gun 28 inserted into the fueling port 26. However, if the number of the ribs 30 is increased, the gap formed between the ribs 30 is narrowed, and the visibility on the back side of the fuel filler opening 26 is lowered. Even in the configuration in which the fuel gun 28 is in a curved or curved shape in the circumferential direction, the visibility is similarly lowered. On the other hand, in the structure in which only one rib 30 is formed, the visibility on the back side of the fuel filler port 26 is high, but two ribs 30 are formed in that the insertion of the fuel gun 28 is stably guided. The configuration can guide more stably. As described above, in order to achieve both the guideability when inserting the fueling gun 28 and the visibility on the back side of the fueling port 26, it is preferable to form two ribs 30 as in the above embodiment.

  In the above description, the structure in which the hinge 22 is provided on the upper portion of the flapper valve 20 is taken as an example, but the position of the hinge 22 may be the lower portion, the right portion, or the left portion of the flapper valve 20.

  Similarly, the connection position of the breather pipe 38 may be any position above the inlet pipe 14. However, the position of the hinge 22 and the breather to the inlet pipe 14 with respect to the center of the fuel filler port 26 when viewed in the direction (arrow G1 direction) visually recognized by the fuel supplier, that is, in the axial direction of the fuel gun 28 inserted into the fuel filler port 26. If the connection position of the pipe 38 is located on the same side (coincides with the axial direction), the upper end of the breather pipe 38 can be visually recognized from the gap between the flapper valve 20 and the fuel gun 28.

12 Oil Supply Structure 16 Oil Supply Port Member 20 Flapper Valve (Open / Close Valve)
22 Hinge (Rotating member)
26 Refueling port 28 Refueling gun 30 Rib (gap member)
32 Gap 34 Gap 36 Guide convex part (guide member)
38 breather pipe

Claims (4)

A filler port member constituting a filler port into which a fuel gun for fueling a fuel tank is inserted; and
An on-off valve capable of opening and closing the fuel filler port;
Between the open position that is arranged on the outer periphery of the on-off valve and is pressed by the fuel gun and moves to the fuel tank side on the opposite side of the arrangement position to open the fuel supply port, and the closed position that closes the fuel supply port A pivot member for pivotally attaching the on-off valve to the fuel filler member;
A gap member provided in the on-off valve, and when the on-off valve is in the open position, a gap member that comes into contact with the fuel gun inserted into the oil filler port to create a gap between the on-off valve and the oil gun;
A breather pipe that opens on the fuel tank side with respect to the center of the fuel filler port on the same side as the rotating member and on the fuel tank side than the on-off valve in the open position;
A fuel tank refueling part structure. A filler port member constituting a filler port into which a fuel gun for fueling a fuel tank is inserted; and
An on-off valve capable of opening and closing the fuel filler port;
Between the open position that is arranged on the outer periphery of the on-off valve and is pressed by the fuel gun and moves to the fuel tank side on the opposite side of the arrangement position to open the fuel supply port, and the closed position that closes the fuel supply port A pivot member for pivotally attaching the on-off valve to the fuel filler member;
A gap member provided in the on-off valve, and when the on-off valve is in the open position, a gap member that comes into contact with the fuel gun inserted into the oil filler port to create a gap between the on-off valve and the oil gun;
A fuel gun provided at the fuel filler member at a position facing the gap member and the fuel filler member in the axial direction across the fuel gun inserted into the fuel filler port along the axial direction of the fuel filler member A guide member for guiding the insertion of
A fuel tank refueling part structure.   3. The fuel tank fueling portion structure according to claim 1, wherein the gap member is in contact with a fueling gun at a plurality of locations in a circumferential direction of the fueling gun inserted into the fueling port.   The fuel tank fueling portion structure according to claim 3, wherein the gap member is a plurality of ribs that are separated from each other in the circumferential direction of the fueling gun inserted into the fueling port.

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