JP2022081927A - Oil feed port device and fuel tank - Google Patents

Abstract

To provide an oil feed port and a fuel tank which can prevent damage of a flap.SOLUTION: An oil feed port includes: a cylindrical member that extends in an axial direction, has an internal space at a depth side that is one side in an axial direction and an internal space at a near side that is the other side in the axial direction, and has an opening communicating the internal space at the depth side and the internal space at the near side each other; a flap that is arranged so as to close the opening, is pressed by an oil feed nozzle inserted to the depth side from the near side of the opening, and is rotated in a direction such that the opening is opened; and a stopper that can be brought into contact with the oil feed nozzle inserted to the depth side from the near side of the opening, and is arranged so that the flap does not receive a load from the oil feed nozzle, when being brought into contact with the oil feed nozzle.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to a fuel filler port device and a fuel tank.

The conventional refueling port device is attached to a fuel tank mounted on a vehicle, extends in the axial direction, and has a tubular member (for example, a filler pipe or a filler tube) into which a refueling nozzle (hereinafter referred to as a nozzle) is inserted. The inside of the tubular member is divided into a space on one side in the axial direction (the back side on the fuel tank side) and a space on the other side in the axial direction (the front side on the opposite side of the fuel tank), and both spaces are communicated with each other. A partition member having an opening and a flap arranged so as to close the opening are provided, and at the time of refueling, the flap (also referred to as a flapper valve or a shutter) is pressed by a nozzle inserted in the back side of the opening. Then, the flap rotates in the direction of opening the valve, and refueling is performed. If the nozzle is pulled out at the end of refueling, for example, the flap rotates in the direction of closing the valve due to the urging force and returns to the valve closing position. In the following description, the fuel tank side with respect to the tubular member is referred to as "back side", and the direction opposite to the fuel tank side is referred to as "front side".

For example, in Patent Document 1, the tubular member and the opening are arranged so as to close the valve, and are pressed by a nozzle inserted into the back side of the opening to rotate the opening in the valve opening direction. Disclosed is a refueling port device with a moving flap and a guide protrusion that is located inside the tubular member and is located behind the flap and that wipes off oil while guiding to the nozzle to be inserted. There is.

Further, for example, in Patent Document 2, a cylindrical member, a diameter-reduced member arranged inside the tubular member, reduced in diameter from the front side toward the back side, and having an opening at the back side end, and an opening. Disclosed is a refueling port device provided with a flap that is arranged to close the valve and rotates in the direction of opening the opening by being pressed by a nozzle inserted into the back of the opening. (See, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2012-144152 JP-A-2015-89752

By the way, in the conventional fuel filler port device, when the nozzle inserted into the back side of the opening is tilted with respect to the axial direction of the tubular member, the flap is sandwiched between the nozzle and the inner wall portion of the tubular member. , The flap may be damaged. Then, when the nozzle is pulled out toward the front side of the opening at the end of refueling, the flap may not return to the valve closing position.

On the other hand, in the fuel filler port device described in Patent Document 1, the inclination angle of the nozzle with respect to the axial direction is limited to some extent by the position and shape of the guide convex portion, but for example, the guide convex portion originally guides the nozzle. However, since it is for wiping oil and not for limiting the tilt angle of the nozzle with respect to the axial direction, depending on the tilt angle of the nozzle with respect to the axial direction, the nozzle and the inner wall portion of the tubular member may be used. The flap may be pinched and the flap may be damaged. In addition, the valve may not return to the closed position at the end of refueling.

Further, in the fuel filler port device described in Patent Document 2, the inclination angle of the nozzle with respect to the axial direction is to some extent depending on the positions and radial sizes of the other end side port (fuel filler port) and the opening of the tubular member. Although limited, for example, the diameter-reducing member is originally intended to guide the nozzle, not to limit the tilt angle of the nozzle with respect to the axial direction, and therefore, depending on the tilt angle of the nozzle with respect to the axial direction. The flap may be pinched by the nozzle and the inner wall portion of the tubular member, and the flap may be damaged. In addition, the valve may not return to the closed position at the end of refueling.

An object of the present disclosure is to provide a filler port device and a fuel tank capable of preventing flap damage.

In order to achieve the above object, the fuel filler port device in this disclosure is
It extends along the axial direction and has an internal space on the back side on one side in the axial direction and an internal space on the front side on the other side in the axial direction. A tubular member with an opening that communicates with the space,
A flap that is arranged so as to close the opening, is pressed by a refueling nozzle inserted from the front side to the back side of the opening, and rotates in the direction of opening the opening.
With a stopper arranged so that the flap can be brought into contact with the refueling nozzle inserted from the front side to the back side of the opening so that the flap does not receive a load from the refueling nozzle when it comes into contact with the refueling nozzle. ,
To prepare for.

Further, the vehicle in the present disclosure is provided with the above-mentioned fuel filler port device.

According to the present disclosure, damage to the flap can be prevented.

FIG. 1 is a vertical sectional view showing an example of a fuel filler port device supported by a fuel tank according to the present embodiment. FIG. 2 is a vertical sectional view showing an example of a fuel filler port device according to the present embodiment. FIG. 3 is a view taken along the line III of FIG. FIG. 4 is a diagram showing the range of motion of the flap. FIG. 5 is a diagram showing a mutual positional relationship between a refueling nozzle, a flap, a stopper, and the like tilted with respect to the axial direction of the tubular member.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The vehicle to which the fuel filler port device according to the embodiment of the present disclosure is applied is, for example, a commercial vehicle such as a truck, and a fuel tank is fixedly supported by a vehicle body frame (not shown) under the vehicle. There is. FIG. 1 is a vertical sectional view showing an example of a fuel filler port device supported by a fuel tank according to the present embodiment. In addition, in FIG. 1, A axis, R axis, X axis, Y axis and Z axis are drawn. In the following description, the left-right direction in FIG. 1 is referred to as "A direction", "axial direction of the tubular member" or simply "axial direction", and the left direction is "+ A direction", "one side in axial direction" or "back". The "side" and the right direction are referred to as "-A direction", "axial direction other side" or "front side". Further, the direction orthogonal to the A axis is referred to as "R direction", "diameter direction of the tubular member" or simply "diameter direction", and the direction away from the A axis in the radial direction is "diameter outside" or "diameter direction". The direction approaching the A axis in the "+ R direction" and the radial direction is referred to as "inner in the radial direction" or "-R direction".

Further, the direction of the X axis in FIG. 1 is referred to as "X direction" or "vehicle width direction", the diagonally lower right direction is referred to as "+ X direction" or "outside in the vehicle width direction", and the diagonally upper left direction is "-X". It is called "direction" or "inside in the vehicle width direction". Further, the direction of the Y axis in FIG. 1 is referred to as "Y direction" or "vehicle height direction", the diagonally upward right direction is referred to as "+ Y direction" or "upward direction of vehicle", and the diagonally downward left direction is referred to as "-Y". It is called "direction" or "vehicle downward". Further, the direction orthogonal to the paper surface in FIG. 1 is referred to as "Z direction" or "vehicle front-rear direction", the front side of the paper surface is "+ Z direction" or "vehicle front direction", and the back side of the paper surface is "-Z direction". Or, it is called "rear direction of the vehicle".

FIG. 1 shows a part of the fuel tank 1. Further, the handle of the refueling nozzle 200 is omitted. As shown in FIG. 1, the fuel tank 1 is a housing having a top plate portion 1a, a bottom plate portion (not shown), and a peripheral wall portion 1b.

FIG. 2 is a vertical sectional view showing an example of the fuel filler port device 100 according to the present embodiment. FIG. 3 is a view taken along the line III of FIG.

As shown in FIGS. 1 to 3, the fuel filler port device 100 includes a large-diameter member 2, a small-diameter member 3, an intermediate member 4, a flap 5, an urging member 6, and a stopper 7. The large-diameter member 2, the small-diameter member 3, and the intermediate member 4 constitute the "cylindrical member" of the present disclosure. In the present embodiment, the large-diameter member 2, the small-diameter member 3, and the intermediate member 4 are separately configured, but may be integrally configured. In the following description, each of the large-diameter member 2, the small-diameter member 3, and the intermediate member 4 may represent a "cylindrical member".

The large-diameter member 2 has a predetermined diameter and has a tubular body 2a extending in the axial direction (A direction). Each of the end portion 2b on the back side (+ A direction) and the end portion 2c on the front side (−A direction) of the tubular body 2a is open in the axial direction. The tubular body 2a has an internal space 2d into which the refueling nozzle 200 is inserted from the front side (−A direction) toward the back side (+ A direction).

The tubular body 2a is made of a metal such as iron, and is subjected to rust-preventive treatment such as zinc plating. The large-diameter member 2 is arranged at a portion 1c which is an end portion of the top plate portion 1a of the fuel tank 1 on the outer side in the vehicle width direction and which is an end portion in the vehicle upward direction. The end portion 2b on the back side penetrates the portion 1c. The back end 2b is welded to the portion 1c. The large-diameter member 2 is arranged with its back side (+ A direction) facing the fuel tank 1 side and its front side (-A direction) facing the vehicle upward direction (+ Y direction) and the vehicle width direction outside (+ X direction). Will be done.

The small-diameter member 3 is arranged coaxially with the large-diameter member 2 and fits inside the large-diameter member 2. The small-diameter member 3 has a diameter smaller than the diameter of the large-diameter member 2, and has a tubular body 3a extending in the axial direction (A direction). The end portion 3b on the back side (+ A direction) is open in the axial direction. The end portion 3c on the front side (-A direction) has a partition portion 3d that partitions the internal space 2d into the space 2e on the back side and the space 2f on the front side. The partition portion 3d has an opening 3e that communicates the space 2e on the back side and the space 2f on the front side. The opening 3e is, for example, a circular through hole. The bearing portion 3f is arranged at a position on the peripheral edge of the opening 3e in the vehicle upward direction (+ Y direction) from the center of the opening 3e and inside the vehicle width direction (−X direction).

The intermediate member 4 has a diameter-expanded portion 41, a diameter-reduced portion 42, and a conical portion 43. The enlarged diameter portion 41 is arranged on the front side (-A direction) of the conical portion 43. The reduced diameter portion 42 is arranged on the back side (+ A direction) of the conical portion 43.

The enlarged diameter portion 41 is arranged coaxially with the large diameter member 2, extends in the axial direction (A direction), is firmly fitted inside the large diameter member 2, and is fixed to the large diameter member 2 by welding or the like. It has a tubular body 41a. Each of the end portion 41b on the back side (+ A direction) and the end portion 41c on the front side (−A direction) of the tubular body 41a are open in the axial direction. The tubular body 41a is made of a metal such as iron, and is subjected to rust-preventive treatment such as zinc plating.

The reduced diameter portion 42 has a tubular body 42a that is arranged coaxially with the large diameter member 2, extends in the axial direction (A direction), and loosely fits inside the large diameter member 2 with a gap. Each of the end portion 42b on the back side (+ A direction) and the end portion 42c on the front side (−A direction) of the tubular body 42a is open in the axial direction. The tubular body 42a is made of a metal such as iron, and is subjected to rust-preventive treatment such as zinc plating.
A small diameter member 3 is firmly fitted in the reduced diameter portion 42. The front end 42c of the reduced diameter portion 42 is aligned with the front end 3c of the small diameter member 3. The end portion 3b on the inner side of the small diameter member 3 protrudes further toward the inner side (+ A direction) than the end portion 42b on the inner side of the reduced diameter portion 42.

The conical portion 43 is arranged coaxially with the large-diameter member 2, extends in the axial direction (A direction), and loosely fits inside the large-diameter member 2 with a gap. The diameter of the conical portion 43 is gradually reduced from the front side (−A direction) to the back side (+ A direction). The end portion 43b on the back side (+ A direction) of the conical portion 43 is connected to the end portion 42c on the front side (−A direction) of the reduced diameter portion 42. The end portion 43c on the front side (-A direction) of the conical portion 43 is connected to the end portion 41b on the back side (+ A direction) of the enlarged diameter portion 41. The conical portion 43 is made of a metal such as iron, and is subjected to a rust preventive treatment such as zinc plating.

The flap 5 is arranged so as to close the opening 3e. The flap 5 is pressed against the refueling nozzle 200 inserted from the front side to the back side of the opening 3e. As a result, the flap 5 rotates in the direction of opening the opening 3e (clockwise in FIG. 1). Here, "pressed by the refueling nozzle" means that it is pressed by the tip of the refueling nozzle, for example, when it is pressed by the tip of the refueling nozzle and by pressing it against the outer periphery of the tip of the refueling nozzle. Including the case where it is done.

Specifically, the flap 5 has a circular plate 5a for closing the opening 3e, which is a circular through hole. A shaft-shaped portion 5b, which is a rotation axis, is arranged on the outer peripheral edge portion of the circular plate 5a. The shaft-shaped portion 5b extends in the vehicle front-rear direction (Z direction). The shaft-shaped portion 5b is supported by the bearing portion 3f. As a result, the circular plate 5a is supported by the bearing portion 3f so as to rotate around the shaft-shaped portion 5b. The range of motion of the flap 5 is the position where the valve closes the opening 3e and the position where there is a gap between the flap 5 and another member when the flap 5 is rotated in the direction of opening the valve (the flap 5 is another member). It is the area between and the position that does not interfere with. In the present embodiment, the other members are the inner peripheral wall 3g of the small diameter member 3 and the stopper 7. The flap 5 is opened from the valve closed position against the urging force of the urging member 6 by the refueling nozzle 200 inserted from the front side (−A direction) to the back side (+ A direction) of the opening 3e. Pressed in the direction.

The urging member 6 urges the flap 5 in the direction of closing the valve (counterclockwise in FIG. 1). The urging member 6 is, for example, a coil spring. The coil spring is manufactured by, for example, a stainless steel wire, an iron wire, an alloy wire, or the like.

The stopper 7 is arranged on the back side (+ A direction) of the flap 5 rotated in the valve opening direction. The stopper 7 is made of a metal material such as iron having a predetermined plate thickness, and is subjected to rust-preventive treatment such as zinc plating. The stopper 7 has a floor portion 7a and a leg portion 7b. The floor portion 7a has a flat plate shape extending in a direction (axial direction and front-rear direction of the vehicle) orthogonal to the radial direction (R direction). The floor portion 7a has a width having a predetermined length in the axial direction (A direction) and a width having a predetermined length in the vehicle front-rear direction (Z direction). The radial height (R direction) of the floor portion 7a is determined so that the floor portion 7a abuts on the refueling nozzle 200 before the flap 5 pressed against the refueling nozzle 200 exceeds a predetermined range of motion limit. .. Here, "before exceeding the range of motion limit" means before the flap 5 interferes with other members. FIG. 4 is a diagram showing the range of motion of the flap 5. Note that FIG. 4 shows the small diameter member 3 and the flap 5, omitting the large diameter member 2, the intermediate member 4, the stopper 7, and the like. As an example of the range of motion limit in FIG. 4, a predetermined gap S between the flap 5 rotated to the position in the direction of opening the valve and the inner peripheral wall 3g (other member) of the small diameter member 3 is shown. Indicates the position with.

The leg portion 7b extends toward both ends of the floor portion 7a in the Z direction or toward the inner peripheral wall 2g of the large-diameter member 2, and the extending end portion 7c is joined to the inner peripheral wall 2g by welding or the like. The leg portion 7b has a predetermined length so that the height of the floor portion 7a in the radial direction becomes the above-mentioned predetermined height.

The material of the stopper 7 is preferably a material having high strength so as to sufficiently withstand the load from the refueling nozzle 200. For example, when the stopper 7 is manufactured of a high-strength material, if there is a position where the refueling nozzle 200 abuts and a portion in the vicinity thereof (the end on the back side), the strength is sufficient and the end on the back side is sufficient. The front part becomes unnecessary. However, in the present embodiment, a general metal material common to the large-diameter member 2, the small-diameter member 3, the intermediate member 4, the flap 5, and the like is used for the stopper 7. Therefore, the portion on the front side of the end on the back side of the stopper 7 is necessary for obtaining a predetermined strength, and the portion on the front side is for guiding the refueling nozzle 200 to be inserted to the back side. Become a guide. The plate thickness of the stopper 7, the width of the floor portion 7a in the A direction, the width of the floor portion 7a in the Z direction, and the length at which the leg portion 7b is joined to the inner peripheral wall 2g are determined by the load from the refueling nozzle 200. It is sufficiently tolerable and is set by experiments and simulations.

Since the portion on the front side of the end on the back side of the stopper 7 extends in the axial direction (X direction), the refueling nozzle 200 tilted in the axial direction comes into contact with the portion on the front side. However, when it is inserted to the back side (+ X direction), the tilt angle of the refueling nozzle 200 is gradually reduced. Then, when the refueling nozzle 200 comes into contact with the end portion (original contact position) on the back side of the stopper 7, the tilt angle of the refueling nozzle 200 is finally regulated (for example, the tilt angle θ shown in FIG. 5). ). Further, by arranging the stopper 7 on the deeper side, the refueling nozzle 200 is restricted to a smaller tilt angle. As a result, the rotation angle of the flap 5 that rotates in the direction of opening the valve when pressed by the refueling nozzle 200 is also reduced, so that the range of motion of the flap 5 can be minimized. As a result, for example, the possibility that the flap 5 interferes with other members can be reduced. In addition, the installation space for other members arranged around the flap 5 can be widened.

Next, when the flap 5 is in the valve closing position for closing the opening 3e, the refueling nozzle 200 is inserted into the back side of the opening 3e along the axial direction (A direction) and tilted with respect to the axial direction. A case where there is no such case will be described with reference to FIG.

When the refueling nozzle 200 is inserted from the front side (−A direction) to the back side (+ A direction) of the opening 3e along the axial direction (A direction), the refueling nozzle 200 presses the flap 5. As a result, the flap 5 rotates in the direction of opening the valve (clockwise in FIG. 1) from the valve closing position.

When the refueling nozzle 200 is inserted along the axial direction (A direction) and cannot be tilted with respect to the axial direction, the flap 5 does not move to a position exceeding the range of motion limit (a position that interferes with other members). The flap 5 only receives the reaction force of the urging force in the valve closing direction (counterclockwise direction shown in FIG. 1) from the refueling nozzle 200. Further, since the flap 5 does not interfere with other members, it is not damaged. Then, when the refueling nozzle 200 is pulled out from the back side to the front side of the opening 3e at the end of refueling, the flap 5 rotates in the direction of closing the valve by the urging force of the urging member 6. As a result, the flap 5 returns to the valve closed position.

Next, when the flap 5 is in the valve closing position for closing the opening 3e, the refueling nozzle 200 is inserted into the back side of the opening 3e along the axial direction (A direction) and with respect to the axial direction. The case of tilting will be described with reference to FIG. FIG. 5 is a diagram showing the mutual positional relationship between the refueling nozzle 200, the flap 5, the stopper 7, and the like tilted in the axial direction (A direction). When the refueling nozzle 200 is inserted into the opening 3e in a state of being tilted with respect to the axial direction, the refueling nozzle 200 is inserted into the opening 3e along the axial direction (A direction) in the function of the stopper 7 or the like. Since it is basically the same as the case where it is inserted into the back side of the above and tilted with respect to the axial direction, the description thereof will be omitted.

When the refueling nozzle 200 is inserted from the front side (−A direction) to the back side (+ A direction) of the opening 3e along the axial direction (A direction), the refueling nozzle 200 presses the flap 5. As a result, the flap 5 rotates in the direction of opening the valve (clockwise in FIG. 1) from the valve closing position.

The refueling nozzle 200 was inserted along the axial direction (A direction), and was tilted with respect to the axial direction with the front end 2c of the large-diameter member 2 as a fulcrum and the handle of the refueling nozzle 200 (not shown) as a force point. In this case, the stopper 7 comes into contact with the refueling nozzle 200. The contact position (point of action) of the stopper 7 receives the load from the refueling nozzle 200. Since the stopper 7 is set so as to sufficiently withstand the load from the refueling nozzle 200, the stopper 7 is not damaged or deformed.

The tilt angle of the refueling nozzle 200 is maximum when the refueling nozzle 200 comes into contact with the stopper 7, and is not tilted any further, and the tilt of the refueling nozzle 200 with respect to the axial direction is regulated. When the refueling nozzle 200 is at the maximum tilt angle, the flap 5 does not receive a load from the refueling nozzle 200. The flap 5 only receives the reaction force of the urging force in the valve closing direction (counterclockwise direction shown in FIG. 5) from the refueling nozzle 200. That is, "not receiving a load from the refueling nozzle" means not receiving a load other than the above reaction force. Further, there is a gap between the flap 5 and the floor portion 7a of the stopper 7. Further, there is a gap between the flap 5 and the inner peripheral wall 3g of the small diameter member 3. Therefore, the flap 5 is not subjected to the force from the floor portion 7a and the inner peripheral wall 3g. That is, the flap 5 is not subjected to a damaging force and is not deformed. Then, when the refueling nozzle 200 is pulled out from the back side to the front side of the opening 3e at the end of refueling, the flap 5 rotates in the direction of closing the valve by the urging force of the urging member 6. As a result, the flap 5 returns to the valve closed position.

The fuel filler port device 100 according to the above embodiment extends along the axial direction (A direction), and has an internal space on the back side (+ A direction) on one side in the axial direction and a front side (front side) on the other side in the axial direction. -A tubular member having an internal space (in the A direction) and having an opening 3e that communicates the internal space on the back side and the internal space on the front side, and an opening arranged so as to close the opening 3e. The flap 5 is pressed by the refueling nozzle 200 inserted from the front side to the back side of 3e and rotates in the direction of opening the opening 3e, and the flap 5 is inserted from the front side to the back side of the opening 3e and is inserted into the refueling nozzle 200. It is provided with a stopper 7 which is made contactable and is arranged so that the flap 5 is not pressed against the refueling nozzle when it comes into contact with the refueling nozzle 200.

According to the above configuration, when the refueling nozzle 200 inserted into the back side of the opening 3e presses the flap 5 and the refueling nozzle 200 comes into contact with the floor portion 7a, the flap 5 is excessively moved from the refueling nozzle 200 thereafter. Since no load is applied, it is possible to prevent the flap 5 from being damaged.

Further, in the above embodiment, the stopper 7 is arranged on the back side (+ A direction) of the flap 5 rotated in the valve opening direction. As a result, in the axial direction (A direction), the flap 5 rotated in the valve opening direction is located between the center of rotation (axial portion 5b) and the stopper 7, so that the flap angle is restricted. 5 is not pressed against the refueling nozzle 200, and the flap 5 is not excessively loaded from the refueling nozzle 200. As a result, it becomes possible to prevent damage to the flap 5.

Further, in the above embodiment, the height of the stopper 7 in the radial direction (R direction) is such that the stopper 7 reaches the refueling nozzle 200 before the flap 5 pressed by the refueling nozzle 200 exceeds a predetermined range of motion limit. Arranged to be determined to abut. When the refueling nozzle 200 comes into contact with the stopper, the flap 5 is not pressed by the refueling nozzle 200, and the flap is not excessively loaded by the refueling nozzle 200. As a result, the flap 5 does not rotate in the direction of opening the valve beyond the range of motion limit, and the flap 5 does not interfere with other members, so that it is possible to prevent the flap 5 from being damaged. Become.

In the fuel filler port device 100 according to the above embodiment, when the flap 5 is in the valve closing position for closing the opening 3e, the fuel filler nozzle 200 is inserted along the axial direction (A direction) and in the axial direction. When tilted, the refueling nozzle 200 is in contact with the floor portion 7a, and the floor portion 7a is arranged so as to regulate the tilt of the refueling nozzle 200. As a result, the flap 5 is prevented from receiving the load from the refueling nozzle 200. The present disclosure is not limited to this, and regardless of whether or not the refueling nozzle 200 is tilted in the axial direction, the refueling nozzle 200 abuts on the floor portion 7a so as not to be pressed by the inserted refueling nozzle 200. , The stopper 7 may be arranged. For example, the floor portion 7a may be a slope inclined inward in the radial direction with respect to the axial direction. When the refueling nozzle 20 is inserted into the back side of the opening 3e while abutting on the floor portion 7a (slope), the refueling nozzle 20 is tilted away from the flap 5 rotated in the valve opening direction, so that the flap is flapped. 5 can be prevented from receiving the load from the refueling nozzle 200.

In addition, the above embodiments are merely examples of the embodiment of the present disclosure, and the technical scope of the present disclosure should not be construed in a limited manner by these. .. That is, the present disclosure can be implemented in various forms without departing from its gist or its main characteristics.

The present disclosure is suitably used for vehicles equipped with a fuel filler port device that is required to prevent flap damage.

1 Fuel tank 1a Top plate 1b Peripheral wall 1c Part 2 Large diameter member 2a Cylindrical body 2b Back end 2c Front end 2d Internal space 2e Back space 2f Front space 2g Inner peripheral wall 3 Small diameter Member 3a Cylindrical body 3b Back end 3c Front end 3d Partition 3e Opening 3f Bearing 3g Inner peripheral wall 4 Intermediate member 5 Flap 5a Circular plate 5b Shaft 6 Bounce member 7 Stopper 7a Floor Part 7b Leg 41 Expanded diameter 41a Cylindrical body 41b Back end 41c Front end 42 Reduced diameter 42a Cylindrical 42b Back end 42c Front end 43 Conical part 43b Back Side end 43c Front end 100 Refueling port device 200 Refueling nozzle

Claims (6)

It extends along the axial direction and has an internal space on the back side on one side in the axial direction and an internal space on the front side on the other side in the axial direction. A tubular member with an opening that communicates with the space,
A flap that is arranged so as to close the opening, is pressed by a refueling nozzle inserted from the front side to the back side of the opening, and rotates in the direction of opening the opening.
With a stopper arranged so that the flap can be brought into contact with the refueling nozzle inserted from the front side to the back side of the opening and the flap is not loaded from the refueling nozzle when it comes into contact with the refueling nozzle. ,
To prepare
Refueling port device. The stopper is arranged behind the flap rotated in the valve opening direction.
The refueling port device according to claim 1. The radial height of the tubular member in the stopper is set so that the stopper abuts on the refueling nozzle before the flap pressed against the refueling nozzle exceeds a predetermined range of motion limit.
The fuel filler port device according to claim 1 or 2. 3. The range of motion limit is a position in the direction in which the valve is opened, and is a position having a predetermined gap between the flap rotated to the position and the inner peripheral wall of the tubular member. Refueling port device described in. The stopper is arranged so that the flap is not loaded from the refueling nozzle by being inserted from the front side to the back side of the opening and abutting on the refueling nozzle tilted in the axial direction. Be done,
The fuel filler port device according to any one of claims 1 to 4. A fuel tank comprising the fuel filler port device according to any one of claims 1 to 5.

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