JP6093399B2 - Fuel tank filler - Google Patents

Description

  The present invention relates to an improvement in a fuel filler opening of a fuel tank.

  2. Description of the Related Art There is known a fuel tank filler port to which a fuel cap is detachably attached (see, for example, Patent Document 1 (FIG. 3)).

  As shown in FIG. 3 of Patent Document 1, the ceiling wall plate (10) of the fuel tank (T) (the numbers in parentheses indicate the symbols described in Patent Document 1. The element names have been partially changed. The same applies hereinafter). Is provided with a fuel filler port (11), and a fuel cap (C) is detachably attached to the fuel filler port (11). The fuel filler port (11) has an annular sealing surface (23a) with which the packing (17) of the fuel cap (C) is in close contact, and a locking member (19) of the fuel cap (C) inside the sealing surface (23a). ) Can be inserted through the notches (24, 24) and guide the locking members (19, 19) of the fuel cap (C) when the fuel cap (C) is opened and closed. A guide portion (25, 25) and a stopper portion provided at an end of the guide portion (25, 25) and stopping the locking member (19, 19) are integrally provided.

The above-described fuel filler opening will be described with reference to a perspective view. The code was re-assigned.
As shown in FIG. 12, an annular seal surface 152 is formed in the oil supply port 151, and notches 153 and 153 are formed inward of these seal surfaces 152, and a guide portion is formed at the lower ends of these notches 153 and 153. 154 and 154 are connected, and stopper portions 155 and 155 are integrally provided at the ends of the guide portions 154 and 154.

  Next, the case where the oil filler having the above structure is molded using one mold will be considered. FIG. 13A is a mold cross-sectional view illustrating a state before processing, FIG. 13B is a diagram illustrating draw molding, and FIG. 13C is a diagram illustrating piercing. FIG. 13D is a diagram for explaining burring.

  As shown in FIG. 13A, the ceiling thin plate S is sandwiched between the lower die 161 and the lower blade die 162, and the upper die 163 and the upper blade wrist punch 164, and the upper die is placed on the lower die 161 and the lower blade die 162. 163 and the upper blade wrist punch 164 are brought closer to each other. As shown in FIG. 13 (b), the upper die 163 and the upper blade wrist punch 164 are aligned with the lower die 161 and the lower blade die 162, and the annular seal surface 152 is formed on the ceiling thin plate S.

  As shown in FIG. 13C, the upper blade wrist punch 164 is further lowered with respect to the upper die 163 to open the oil supply hole 165. Next, as shown in FIG. 13D, the upper blade wrist punch 164 is further lowered, and the upper blade wrist punch 164 and the lower blade die 162 are moved against the lower die 161 and the upper die 163 while the die cushion 167 is applied. And the burring process is performed on the oil supply hole 165. At this time, the guide part 154 and the stopper part 155 are formed by being sandwiched and suspended between the upper blade wrist punch 164 and the lower mold 161. After the guide portion 154 and the stopper portion 155 are formed, the upper blade wrist punch 164 and the lower blade die 162 are lifted together, and the upper die 163 is further lifted to complete one molding cycle.

Next, problems in the above processing will be described.
In the burring process, the stopper portion 155 of the filler opening is sandwiched between the upper blade wrist punch 164 and the lower die 161 and is formed into a shape that hangs down from a substantially horizontal shape while being rubbed. Molding is difficult compared to stopper parts that are not drooping. In addition, when the lower blade die 162 after molding rises, a load from the lower blade die 162 is easily applied to the stopper portion 155 that protrudes downward from the guide portion 154 that is drooped. In order to increase the strength of 155, there is a problem that the cost is increased by making the stopper portion 155 thick.
A fuel tank filler port that can easily mold the stopper portion is desired.

JP 2006-328985 A

  An object of the present invention is to provide a fuel tank fuel filler port in which a stopper portion can be easily formed.

  According to the first aspect of the present invention, an oil supply hole is defined in the ceiling wall plate of the fuel tank, and an annular seal portion capable of closely adhering packing provided on the fuel cap around the oil supply hole, and an inner side of the seal portion A notch through which a locking member attached to the fuel cap is inserted, a guide portion connected to the notch to guide the locking member, and a stopper portion provided below the guide portion to hold the locking member; The fuel filler is divided into a fuel filler part including a guide part provided on the ceiling wall plate, and a stopper member attached to the lower surface of the fuel filler part. The stopper member includes a flange portion that comes into contact with the lower surface of the oil filler port portion, a cylindrical portion that hangs down from the flange portion, and a stopper portion that extends horizontally from the cylindrical portion or the flange portion. Characterized in that it is separated from the over portion and the guide portion.

  The invention according to claim 2 is characterized in that the stopper member is attached to the fuel tank so that the upper portion of the stopper portion is covered with the fuel filler port portion in a plan view.

  The invention according to claim 3 is characterized in that an air vent groove is formed in the flange portion.

  The invention according to claim 4 is characterized in that a positioning portion for determining a mounting position to the oil filler port portion is formed in the flange portion.

  According to a fifth aspect of the present invention, the flange portion has a first flange surface that has a predetermined width in the radial direction of the fuel filler port portion and can be welded to the lower surface of the fuel tank, and a width narrower than the predetermined width of the first flange surface And a second flange surface.

  The invention according to claim 6 is characterized in that a gun stopper for preventing the tip of the fueling gun from entering the fueling port at a predetermined value or more when the fueling gun is inserted into the fueling port is attached to the cylindrical part. And

  The invention according to claim 7 is characterized in that the stopper portion and the gun stopper for preventing the tip of the fueling gun from entering the fueling port by a predetermined value or more are formed integrally.

  In the invention according to claim 1, the fuel filler port of the fuel tank is divided into a fuel filler part provided in the ceiling wall plate and a stopper member attached to the lower surface of the fuel filler part. That is, the guide portion provided in the fuel filler port portion and the stopper portion provided in the stopper member are separately formed. Since the guide part and the stopper part can be formed separately and independently, the stopper part is hardly deformed.

  Further, since the guide portion and the stopper portion are separated from each other and the stopper portion that stops the movement of the locking member is formed to extend horizontally, the stopper portion can be easily formed as compared with the structure in which the stopper portion hangs down.

  In the invention according to claim 2, since the stopper portion is covered from above with the oil supply port portion, the oil supply gun hardly interferes with the stopper portion when the oil supply gun is inserted into the oil supply port portion. As a result, the fueling gun can be easily inserted into the fueling port.

  In the invention according to claim 3, when fuel is poured into the fuel tank in a state where the tip of the fueling gun is inserted below the flange part, the cylindrical part located inside the flange part and the fueling gun The air in the fuel tank escapes from the gap.

  In the present invention, since the air vent groove is formed in the flange portion, even when the space between the cylindrical portion and the fueling gun is filled with fuel, the air in the fuel tank can escape through the air vent groove. did.

  In the invention which concerns on Claim 4, a positioning part is formed in a flange part. With this positioning portion, positioning workability when attaching the flange portion to the oil filler port portion can be improved. As a result, the number of assembling steps for the stopper member can be reduced.

  In the invention which concerns on Claim 5, the flange part is provided with the 1st flange surface which has a width | variety which can be welded, and the 2nd flange surface which has a width | variety narrower than this 1st flange surface. By narrowing the width of the second flange surface, which is a portion not subjected to welding, the flange portion can be made smaller, and the material cost can be reduced accordingly.

  In the invention which concerns on Claim 6, the gun stopper is attached to the cylindrical part. When the refueling gun is inserted into the fuel tank, the tip of the refueling gun hits the gun stopper, thereby preventing the refueling gun from entering the fuel tank.

  In the invention according to claim 7, since the stopper portion and the gun stopper are integrally formed, the number of parts can be reduced and the manufacturing process can be simplified as compared with the case where the stopper portion and the gun stopper are formed separately. Can be planned.

It is a disassembled perspective view explaining the structure of the fuel filler opening of the fuel tank concerning Example 1. It is a disassembled sectional view explaining the structure of the fuel filler and the fuel cap of a fuel tank. It is operation | movement explanatory drawing which concerns on opening and closing of a fuel cap. FIG. 3 is a cross-sectional view of a main part of the fuel filler and the fuel cap of the fuel tank according to the first embodiment (a state in which the fuel cap is attached). FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. 6 is an exploded view illustrating a structure of a fuel filler opening of a fuel tank according to Embodiment 2. FIG. It is a top view (state where the fuel cap was removed) of the fuel filler opening of the fuel tank concerning Example 2. FIG. 6 is a cross-sectional view of a main portion of a fuel tank and a fuel cap according to a second embodiment (a state in which the fuel cap is attached). FIG. 6 is an exploded view illustrating the structure of a fuel filler opening of a fuel tank according to a third embodiment. It is a top view (state where the fuel cap was removed) of the fuel filler opening of the fuel tank concerning Example 3. It is a perspective view explaining the conventional fueling opening. It is a figure explaining carrying out the metal mold | work of the oil filler opening shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail.

First, Embodiment 1 of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the fuel filler port 11 of the fuel tank 10 includes a fuel filler port portion 15 that includes a fuel filler hole 14 that is defined in the ceiling wall plate 12 of the fuel tank 10 and to which a fuel cap 13 is detachably attached. The stopper member 20 is attached to the mouth portion 15 from below. The stopper member 20 is joined to the flange portion 21 in contact with the lower surface 15b of the fuel filler port portion 15, the cylindrical portion 22 depending from the flange portion 21, and the inner side surface 22u of the cylindrical portion 22 in an upward opening direction. And a gun stopper 23 having a letter shape. The gun stopper 23 is formed by bending a plate-like member, extends in the height direction, is joined to the inner surface 22u of the cylindrical portion 22, and the one and the other vertical arms 24a and 24b, and the one and the other vertical arms 24a. , 24b, which are bent inward in the horizontal direction and formed on the fuel cap 13, one and the other stopper portions 32a, 32b holding the locking members 31a, 31b, and the one and the other vertical arms 24a, It consists of a lateral arm 33 that stops the invasion of the fuel gun that is passed to the lower end of 24 b and inserted into the fuel hole 14.

  As shown in FIG. 2, as described above, the stopper member 20 includes the flange portion 21 that comes into contact with the lower surface 15 b of the oil filler port portion 15, the cylindrical portion 22 that hangs down from the flange portion 21, and the horizontal portion from the cylindrical portion 22. 1 and the other stopper portions 32a and 32b that stop the locking members 31a and 31b, and a gun stopper 23 disposed below the one and the other stopper portions 32a and 32b.

  The stopper member 20 includes one and other stopper portions 32 a and 32 b that restrict the rotation of the fuel cap 13 and a gun stopper 23.

  The fuel cap 13 includes a bottomed cylindrical portion 42 inserted into the fuel filler port 11, a cap inner 44 including a horizontal flange 43 projecting radially from the upper end thereof, and a cap outer fixed to the outer periphery of the horizontal flange 43 by caulking. 45 and a packing 46 in close contact with the lower surface of the horizontal flange 43.

  The bottomed cylindrical portion 42 of the cap inner 44 is formed with openings 47a and 47b that are arranged to face each other and extend in the height direction, and locking members 31a and 31b are arranged so that both ends protrude from these openings 47a and 47b. The The locking members 31a and 31b are urged upward in the height direction via holding springs 48a and 48b accommodated in the bottomed cylindrical portion 42.

  The locking members 31a and 31b have sliding surfaces 51a and 51b that slide while urging the guide portions 41a and 41b while the upper surfaces of the locking members 31a and 31b are in contact with the guide portions 41a and 41b, respectively. It has stopper contact portions 52a and 52b extending downward from 51b so as to be able to contact the stopper portions 32a and 32b.

  Next, the fuel filler port 15 to which the fuel cap 13 is detachably attached will be described with reference to FIG. The fuel filler port 15 has an annular shape formed in the ceiling wall plate 12 of the fuel tank 10 and an annular shape formed around the fuel hole 14 and extending upward from the ceiling wall plate 12 to which the fuel cap 13 can be closely attached. The seal portion 55 includes an inner flange 56 extending radially inward from the annular seal portion 55, and a guide wall 57 extending downward from the inner end of the inner flange 56.

  The inner flange 56 and the guide wall 57 positioned in the vicinity of the seal portion 55 are formed with one and the other notches 58a and 58b through which the locking members 31a and 31b projecting horizontally outward from the fuel cap 13 are inserted. ing. At the lower end of the guide wall 57, one and the other guide portions 41a and 41b are formed which continue to the notches 58a and 58b and guide the locking members 31a and 31b of the fuel cap 13.

  In other words, the oil filler port 11 is divided into an oil filler port part 15 provided on the ceiling wall plate 12 and including the guide parts 41 a and 41 b, and a stopper member 20 attached to the lower surface 15 b of the fuel filler hole part 15. The stopper member 20 includes a flange portion 21 that comes into contact with the lower surface 15b of the oil filler port portion 15, a cylindrical portion 22 that hangs down from the flange portion 21, and stopper portions 32a and 32b that extend horizontally from the cylindrical portion 22. .

  In this embodiment, the stopper portions 32a and 32b extending horizontally from the cylindrical portion 22 have a stopper function for stopping the locking members 31a and 31b of the fuel cap 13, and the tip of the fuel gun enters the fuel tank 10. The stoppers 32a and 32b and the gun stopper 23 are integrally formed. It should be noted that the stopper portions 32a and 32b may be structured to extend horizontally from the flange portion instead of the cylindrical portion.

  FIG. 3A is an operation view for explaining that the locking member is aligned with the notch and the fuel cap is rotated. The one and other notches 58a and 58b formed in the fuel filler port 15 are aligned with the one and other locking members 31a and 31b provided in the fuel cap 13, and the locking members 31a and 31b are mounted on the guide portions 41a and 41b. It shows that the fuel cap 13 is rotated in the direction of the arrow m while being lined, and the operation of closing the fuel filler port 11 is performed.

  FIG. 3B is an operation diagram for explaining a state in which the locking member is in contact with the stopper member and the oil supply port is completely closed. In FIG. 3 (a), the fuel cap 13 is rotated in the direction of the arrow m around the fuel filler axis J, and one and the other locking members 31a and 31b of the fuel cap 13 are connected to the one and the other stopper portions. By hitting 32a, 32b, it indicates that the operation of closing the fuel filler port 11 has been completed.

Next, the stopper member positioning structure and the like will be described.
Referring also to FIG. 1, first flange surfaces 61 and 61 having a predetermined width (B1) in the radial direction of the fuel filler port 15 and weldable to the lower surface of the fuel tank 10 are formed in the flange portion 21 of the stopper member 20. The second flange surfaces 62, 62 having a width (B2) (B2 <B1) narrower than a predetermined width (B1) of the first flange surfaces 61, 61 are provided. In this embodiment, the flange portion 21 of the stopper member 20 is joined to the fuel filler port portion 15 by performing spot welding 63, 63 on the first flange surfaces 61, 61, respectively.
In plan view, the stopper member 20 is attached to the fuel tank 10 so that the upper portions of the stopper portions 32 a and 32 b provided in the stopper member 20 are covered with the fuel filler port portion 15.

  As shown in FIG. 4, the fuel supply port 11 of the fuel tank 10 includes a fuel supply port portion 15 including a fuel supply hole 14 defined in the ceiling wall plate 12, and a stopper member 20 attached to the lower surface 15 b of the fuel supply port portion 15. It consists of. The fuel filler port 15 includes an oil filler hole 14 defined in the ceiling wall plate 12, and an annular seal portion 55 that is formed so as to surround the oil filler hole 14 and that can be closely attached to a packing 46 provided on the fuel cap 13. The inner flange 56 extending inward of the seal portion 55, the guide wall 57 extending downward from the inner flange 56 and formed by burring, the inner flange 56 and the guide wall 57 Cutouts 58a, 58b (see FIG. 2) through which the locking members 31a, 31b attached to the fuel cap 13 are partially inserted and the lower ends of the guide walls 57 are connected to the cutouts 58a, 58b. And the guide members 41a and 41b that urge and guide the locking members 31a and 31b downward.

  The stopper member 20 includes a flange portion 21 that comes into contact with the lower surface 15b of the fuel filler port portion 15, a cylindrical portion 22 that hangs down from the flange portion 21, and stopper portions 32a and 32b that extend horizontally from the cylindrical portion 22. The stopper portions 32a and 32b and the guide portions 41a and 41b are separated from each other. Stopper portions 32a and 32b are provided below the guide portions 41a and 41b.

  In the figure, the fuel filler port 11 is in a state of being closed by the fuel cap 13, and as the fuel cap 13 is closed, the sliding portions 51a and 51b of the locking members 31a and 31b are lowered by the guide portions 41a and 41b. The stopper contact portions 52a and 52b of the locking members 31a and 31b are in contact with the stopper portions 32a and 32b that are separated from the guide portions 41a and 41b and are provided independently of each other. .

Next, the air vent groove will be described.
As shown in FIG. 5, an air vent groove 65 as a recess is formed in the flange portion 21 that contacts the ceiling wall plate 12 outward in the radial direction of the cylindrical portion 22. The air vent groove 65 is formed by abutting a downward convex portion having a semicircular bead shape in cross section formed in the flange portion 21 on the flat surface of the ceiling wall plate 12.

Next, the positioning part of the stopper member will be described.
As shown in FIG. 6, a boss portion 66 projecting downward is formed on the ceiling wall plate 12, and a positioning portion 67 of the flange portion 21 is engaged with the boss portion 66, so that a stopper is provided on the ceiling wall plate 12. The member 20 can be positioned.

  Returning to FIG. 1, positioning portions 67 and 67 that are formed in a cutout shape and can be engaged with the boss portion 66 of the ceiling wall plate 12 are provided at the outer peripheral position 21 p of the flange portion 21. That is, a positioning portion 67 that defines an attachment position to the fuel filler port portion 15 is formed in the flange portion 21.

The operation of the fuel tank filler port described above will be described next.
The fuel inlet 11 of the fuel tank 10 is divided into a fuel inlet 15 provided on the ceiling wall plate 12 and a stopper member 20 attached to the lower surface 15b of the fuel inlet 15. That is, the guide portions 41a and 41b provided in the fuel filler port 15 and the stopper portions 32a and 32b provided in the stopper member 20 are formed separately. Since the guide portions 41a and 41b and the stopper portions 32a and 32b are separate and independent members, the stopper portions 32a and 32b can be prevented from being deformed during molding.

  Returning to FIG. 4, the guide portions 41a and 41b and the stopper portions 32a and 32b are separated from each other, and the stopper portions 32a and 32b that stop the movement of the locking members 31a and 31b are formed so as to extend horizontally. The stopper portions 32a and 32b can be easily formed as compared with the stopper portion having the structure.

  Returning to FIG. 3, since the stopper portions 32 a and 32 b are covered from above with the fuel filler portion 15, the fuel gun is unlikely to interfere with the stopper portions 32 a and 32 b when the fuel gun is inserted into the fuel filler portion 15. As a result, even when the stopper portions 32 a and 32 b are attached to the fuel filler port 15, the fuel gun can be easily inserted into the fuel filler port 15.

  Referring also to FIG. 5, when fuel is poured into the fuel tank 10 with the tip of the fueling gun inserted below the flange portion 21, the air in the fuel tank 10 passes through the air vent groove 65. Since it goes out through, the air in the fuel tank 10 is easy to escape.

  With reference to FIGS. 1, 3 and 6 together, a positioning portion 67 is formed in the flange portion 21. The positioning portion 67 can improve the positioning workability when the flange portion 21 is attached to the fuel filler port portion 15. As a result, the number of assembling steps for the stopper member 20 can be reduced.

  The flange portion 21 is provided with a first flange surface 61 having a weldable width and a second flange surface 62 having a narrower width than the first flange surface 61. By narrowing the width of the second flange surface 62, which is a portion not subjected to welding, the flange portion 21 can be made smaller, and the material cost can be reduced accordingly.

  Returning to FIG. 4, a gun stopper 23 is attached to the cylindrical portion 22. When the fuel gun is inserted into the fuel tank, the tip of the fuel gun hits the gun stopper 23, so that the fuel gun can be prevented from entering the fuel tank. Further, since the stopper portions 32a and 32b and the gun stopper 23 are integrally formed, the number of parts is reduced and the manufacturing process is simplified as compared with the case where the stopper portions 32a and 32b and the gun stopper 23 are formed separately. Can be achieved.

Next, a second embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 7, the fuel tank filling port 11 is divided into a filling port portion 15 provided in the ceiling wall plate 12 and a stopper member 20 attached to the lower surface 15 b of the filling port portion 15. The fuel filler port 15 includes guide portions 41a and 41b (only the reference numeral 41a on one side is shown).

  The U-shaped member 71 is inserted and joined to the inner side surface 22u of the cylindrical portion 22 of the stopper member 20 from below in the direction of opening upward. The U-shaped member 71 is an oil supply gun stopper 23 that stops the invasion of an oil supply gun inserted into the oil supply hole 14, and extends in the height direction and is joined to the inner surface of the cylindrical portion 22 with one and the other vertical arms 24a and 24b. The horizontal arm 33 is passed to the lower ends of the one and the other vertical arms 24a and 24b.

  The stopper member 20 hangs down from the flange portion 21 that contacts the lower surface 15 b of the fuel filler port portion 15, stopper portions 32 a and 32 b that are integrally provided on the flange portion 21 and extend horizontally inward, and the flange portion 21. A cylindrical portion 22.

  As shown in FIG. 8, one and the other stoppers 32 a and 32 b extending inward from the flange portion 21 in plan view are covered with a part of the fuel filler opening 11. That is, the stopper member 20 is attached to the fuel tank 10 so that the upper portions of the stopper portions 32 a and 32 b are covered with the fuel filler port portion 15. As in the first embodiment, an air vent groove 65 that is recessed downward is formed in the flange portion 21.

  Further, the flange portion 21 of the stopper member 20 is formed with positioning portions 67a and 67b for determining the attachment position to the oil filler port portion 15, and the boss portions 66 and 66 with which the positioning portions 67a and 67b are engaged are formed on the ceiling wall. It is formed on the plate 12.

  As shown in FIG. 9, the oil supply port 11 includes an oil supply port 15 provided on the ceiling wall plate 12 and including the oil supply hole 14 and the guide portions 41 a and 41 b, and a stopper member 20 attached to the lower surface 15 b of the oil supply port 15. It consists of. The stopper member 20 includes a flange portion 21 that comes into contact with the lower surface 15b of the fuel filler port portion 15, a cylindrical portion 22 that hangs down from the flange portion 21, and stopper portions 32a and 32b that extend horizontally from the flange portion 21. In addition, the stopper portions 32a and 32b and the guide portions 41a and 41b are separated from each other.

  In addition, a gun stopper 23 is attached to the cylindrical portion 22 to prevent the tip of the fueling gun from entering the fueling port more than a predetermined value when the fueling gun is inserted into the fueling port 15. In addition, positioning portions 67 a and 67 b that define a mounting position to the oil filler port portion 15 are formed in the flange portion 21.

  In the figure, the fuel filler port 11 is in a state of being closed by the fuel cap 13, and as the fuel cap 13 is closed, the sliding portions 51a and 51b of the locking members 31a and 31b are lowered by the guide portions 41a and 41b. The stopper contact portions 52a and 52b of the locking members 31a and 31b are in contact with the stopper portions 32a and 32b that are separated from the guide portions 41a and 41b and are provided independently. In addition, the structure and operation of the fuel filler port are not significantly different from those of the first embodiment, and the description thereof is omitted. Note that the fuel cap that closes the fuel filler opening has the same structure as that of the first embodiment, and a description thereof will be omitted.

Next, Embodiment 3 of the present invention will be described with reference to the drawings. The fuel cap has the same structure as that of the second embodiment, and will be described with the fuel cap shown in FIG.
As shown in FIG. 10, the fuel filler port 11 of the fuel tank is divided into a filler port portion 15 provided in the ceiling wall plate 12 and a stopper member 20 attached to the lower surface 15 b of the filler port portion 15. The fuel filler 15 includes guide portions 41a and 41b (only the reference numeral 41a on one side is shown) for guiding the locking members 31a and 31b (see FIG. 9) of the fuel cap. The stopper member 20 includes a flange portion 21 that comes into contact with the lower surface 15 b of the fuel filler port portion 15, a cylindrical portion 22 that hangs down from the flange portion 21, and a gun stopper 23 that is attached to the outer side surface 22 s of the cylindrical portion 22.

  The gun stopper 23 extends in the height direction and is in contact with the outer surface 22s of the cylindrical portion 22 in the horizontal direction at one and the other vertical arms 24a and 24b and the upper ends of the one and the other vertical arms 24a and 24b. One and the other stopper portions 32a and 32b that hold the locking members 31a and 31b (see FIG. 9) formed on the fuel cap 13 (see FIG. 9) and bent inward, and the one and the other vertical portions. It consists of a lateral arm 33 that stops the entry of a fuel gun that is passed to the lower ends of the arms 24a, 24b and inserted into the fuel hole 14.

  As shown in FIG. 11, the stopper member 20 is attached to the fuel tank 10 so as to be covered with the fuel filler port 15 above the stopper portions 32 a and 32 b in plan view. An air vent groove 65 is formed in the flange portion 21. The structure of the air vent groove 65 is the same as that of the first embodiment, and a description thereof is omitted. Similar to the air vent groove, a positioning portion 67 is formed in the flange portion 21, which is a constituent element of the stopper member 20, to determine the mounting position to the fuel filler port portion 15.

  Referring also to FIG. 10, the point that differs greatly from the first embodiment is that the gun stopper 23 is formed in a C shape by bending a round bar-like member, and the round bar-like gun stopper 23 is opposed to the cylindrical portion 22. Inserted into one and the other holes 73a and 73b opened in the cylinder, and further, crimped portions 74 and 74 are formed on the cylindrical portion 22 after the gun stopper 23 has been inserted, with the round rod-shaped gun stopper 23 being clamped. There is no significant difference in other structures and operations.

  Although the fuel filler port of the present invention is applied to the fuel filler port of the fuel tank mounted on the motorcycle in the embodiment, it can also be applied to the fuel filler port of the fuel tank for general-purpose engines. It can be applied to the mouth.

  The present invention is suitable for a fuel filler port of a fuel tank mounted on a motorcycle.

  DESCRIPTION OF SYMBOLS 10 ... Fuel tank, 12 ... Ceiling wall board, 13 ... Fuel cap, 14 ... Filling hole, 15 ... Filling port part, 20 stopper member ..., 21 ... Flange part, 22 ... Cylindrical part, 23 ... Gun stopper, 31a, 31b ... Stopping member, 32a, 32b ... Stopper part, 41a, 41b ... Guide part, 46 ... Packing, 55 ... Seal part, 58a, 58b ... Notch, 61 ... First flange surface, 62 ... Second flange surface, 65 ... Air vent groove, 67 ... Positioning part.

Claims (7)

An oil supply hole (14) is defined in the ceiling wall plate (12) of the fuel tank (10), and a ring (46) provided on the fuel cap (13) can be in close contact with the periphery of the oil supply hole (14). A seal portion (55), a notch (58a, 58b) through which a locking member (31a, 31b) provided inside the seal portion (55) and attached to the fuel cap (13) is inserted, Guide portions (41a, 41b) connected to the notches (58a, 58b) and guiding the locking members (31a, 31b), and the locking members (31a, 31b) provided below the guide portions (41a, 41b). And a stopper portion (32a, 32b) for holding the fuel tank,
The oil supply port includes an oil supply port portion (15) provided on the ceiling wall plate (12) and including the guide portions (41a, 41b), and a stopper member (20) attached to the lower surface of the oil supply port portion (15). And is divided into
The stopper member (20) includes a flange portion (21) that contacts the lower surface of the oil filler port portion (15), a cylindrical portion (22) that hangs down from the flange portion (21), and the cylindrical portion (22) or The stopper portion (32a, 32b) extending horizontally from the flange portion (21),
The fuel filler opening of the fuel tank, wherein the stopper portions (32a, 32b) and the guide portions (41a, 41b) are separated from each other.   The stopper member (20) is attached to the fuel tank (10) so as to be covered with the fuel filler port portion (15) above the stopper portions (32a, 32b) in a plan view. 1. A fuel tank filler opening according to 1.   The fuel filler port of the fuel tank according to claim 1 or 2, wherein an air vent groove (65) is formed in the flange portion (21).   The fuel tank according to any one of claims 1 to 3, wherein a positioning portion (67) for defining a mounting position to the fuel filler port portion (15) is formed in the flange portion (21). Refueling port.   The flange portion (21) has a first flange surface (61) having a predetermined width in the radial direction of the fuel filler port portion (15) and weldable to the lower surface of the fuel tank (10), and the first flange surface. The fuel tank filler opening according to any one of claims 1 to 4, wherein a second flange surface (62) having a width smaller than the predetermined width of (61) is provided.   A gun stopper (23) is attached to the cylindrical portion (22) for preventing the tip of the fuel gun from penetrating into the fuel filler port by a predetermined value or more when the fuel gun is inserted into the fuel filler port (15). The fuel filler opening of the fuel tank according to any one of claims 1 to 5, wherein   The said stopper part (32a, 32b) and the gun stopper (23) which prevents that the tip of a fueling gun penetrate | invade more than a predetermined value into the said fueling port are formed integrally. A fuel tank filler opening according to any one of the preceding claims.

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