JP7082754B2 - flap - Google Patents

Description

The present disclosure relates to flaps.

Patent Document 1 describes a fuel tank opening / closing device including a tank opening opening / closing member having a fuel passage connected to the fuel tank and an insertion-side opening / closing mechanism. The tank opening forming member is a pipe body forming a fuel passage, and includes an insertion passage forming member. The insertion passage forming member is provided with an insertion opening for inserting a refueling nozzle. The insertion-side opening / closing mechanism includes a rotating member, a shaft support portion, and a spring that urges the rotating member in the closing direction. The rotating member is pushed by the tip of the refueling nozzle against the spring force of the spring and rotates around the shaft support portion to open the insertion opening.

JP-A-2015-63294A

In the fuel tank opening / closing device as described in Patent Document 1, since the rotating member (flap) is urged in the closing direction by the spring, the flap pushed to the tip of the refueling nozzle is opened for insertion (refueling). In the open state where the mouth) is open, the tip of the flap on the free end side is pressed toward the outer peripheral surface of the refueling nozzle. When refueling such a fuel tank using a refueling gun having a protrusion (for example, a coil spring wound around the refueling nozzle) on the outer peripheral surface of the refueling nozzle, the tip of the flap is the outer peripheral surface of the refueling nozzle. Since it is pressed toward the protrusion of the fuel tank, when the fuel nozzle is pulled out from the fuel filler port, the protrusion of the fuel nozzle may be caught by the tip of the flap from the fuel tank side and the flap may be damaged.

Therefore, an object of the present disclosure is to provide a flap capable of preventing the flap from being damaged when the refueling nozzle is pulled out from the refueling port.

In order to solve the above problems, the first aspect of the present invention is to partition a refueling path into a fuel tank, have a refueling port on one side, and connect the other side to a fuel tank to which fuel is supplied by a refueling nozzle. It is a flap that is tiltably supported with respect to the filler pipe to be formed, and includes a flap main body and a guide edge portion. The flap body has a supported portion that is rotatably supported with respect to the filler pipe on one end side in the flap height direction, and has a closed position for closing the refueling path and a refueling path tilted from the closed position to the other side. It can be tilted about the supported portion with respect to the open position to open, and is tilted from the closed position to the open position by being pushed by the lubrication nozzle inserted from the lubrication port. The guide edge portion has a guide surface on which the refueling nozzle slides when the refueling nozzle is pulled out from a state in which the flap body is tilted to an open position by the refueling nozzle, and is provided on a part of the outer peripheral edge of the flap body. The guide edge is not provided on one end side of the center of the flap body in the flap height direction, but is provided on the other end side of the flap body in the flap height direction. On the guide surface, the flap body is tilted to the open position by the refueling nozzle, and the distance from the outer peripheral surface of the refueling nozzle increases toward the other side in a state where the guide edge is in contact with the outer peripheral surface of the refueling nozzle.

In the above configuration, when the refueling nozzle is inserted from the refueling port into the refueling path, the flap body is pushed by the refueling nozzle and tilts from the closed position to the open position, and when the refueling nozzle is further inserted, the tip of the refueling nozzle flaps. When moving to the other side, the guide edge of the flap comes into contact with the outer peripheral surface of the refueling nozzle. When the refueling nozzle is pulled out from the refueling port from this state, the outer peripheral surface of the refueling nozzle slides on the guide surface of the guide edge portion to one side (refueling port side).

With the guide surface in contact with the outer peripheral surface of the refueling nozzle, the distance from the outer peripheral surface of the refueling nozzle increases toward the other side, so that the outer peripheral surface of the refueling nozzle and the guide surface of the guide edge portion A space that is expanded to the other side (hereinafter referred to as an approach space) is partitioned between the space and the space. Therefore, when the refueling nozzle having a protrusion (for example, a coil spring wound around the refueling nozzle) on the outer peripheral surface is pulled out from the refueling port, if the refueling nozzle is moved to one side, it will be on the other side than the guide edge. The protrusion of a refueling nozzle enters the entry space, and the surface on one side of the protrusion abuts on the guide surface of the guide edge. When the refueling nozzle is further moved to one side from this state, the protrusion of the refueling nozzle slides on the guide surface of the guide edge to one side (direction in which the approach space is reduced), and this sliding causes the flap to slide. The guide edge is separated from the outer peripheral surface of the lubrication nozzle, and the flap (guide edge and flap body) is tilted toward the open position. This allows the protrusion of the refueling nozzle to move to one side of the guide edge of the flap. Therefore, since the refueling nozzle can be pulled out from the refueling port without hooking the protrusion of the refueling nozzle on the flap, it is possible to prevent the flap from being damaged when the refueling nozzle is pulled out from the refueling port.

A second aspect of the present invention is the flap of the first aspect, wherein one surface of the flap body has a region recessed in a substantially spherical shape toward the other side.

In the above configuration, since one surface of the flap body has a region (hereinafter referred to as a spherical region) that is substantially spherically recessed toward the other side, the tip of the refueling nozzle inserted into the refueling port is the flap body. Upon contacting the spherical region of one side surface, the tip of the refueling nozzle is guided towards the substantially central portion of the spherical region by the spherical region of one side surface of the flap body. In this way, since the spherical region on one side of the flap body can guide the tip of the refueling nozzle, the spherical region on one side can be appropriately arranged to obtain the tip of the refueling nozzle. Can be guided to the position of. For example, by arranging the substantially central portion of the spherical region on one side surface of the flap body at the substantially center of the refueling path of the filler pipe, the tip of the refueling nozzle can be guided to the substantially center of the refueling path.

A third aspect of the present invention is the flap of the first or second aspect, wherein the flap body is urged to a closed position by an urging member.

In the above configuration, since the flap main body is urged to the closing position by the urging member, the refueling path can be closed by the flap main body when the refueling nozzle is pulled out from the refueling port.

According to the present disclosure, it is possible to prevent the flap from being damaged when the refueling nozzle is pulled out from the refueling port.

It is external perspective view of the fuel tank of one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. It is the figure which looked at the filler pipe with the flap open and moved from the inside of the tank (direction of arrow III of FIG. 2). It is an external perspective view of an inlet with a flap attached. It is an external perspective view of a flap. FIG. 5 is a cross-sectional view taken along the line VI-VI of FIG. It is sectional drawing which shows the state immediately after insertion of a refueling nozzle. It is sectional drawing which shows the state in the process of inserting a refueling nozzle. It is sectional drawing which shows the state at the time of completion of insertion of a refueling nozzle. It is sectional drawing which shows the state of the refueling nozzle at the time of refueling.

Hereinafter, the flap 30 according to the embodiment of the present invention will be described with reference to the drawings. The flap 30 of the present embodiment is applied to the fuel tank 1 of the vehicle, and opens and closes the fuel supply passage 3 to the fuel tank 1. The vehicle is a commercial vehicle such as a truck, and is fixedly supported by a vehicle body frame (not shown) at the bottom of the vehicle with the fuel tank 1 exposed. The arrow UP in the figure indicates upward.

When refueling the fuel tank 1, a refueling gun 9 is used. The refueling gun 9 has a curved refueling nozzle 50. The refueling nozzle 50 is inserted into the refueling passage 3 so as to be curved downward (in a posture in which the upper side is convex) when supplying fuel to the fuel tank 1. A coil spring 51 is wound around the outer peripheral surface 52 of the lubrication nozzle 50. (See FIGS. 7, 8, 9, and 10) Even when the coil spring 51 is released from the state in which the refueling nozzle 50 is inserted in the refueling passage 3, the coil spring 51 is caught in the filler pipe 4, which will be described later, to fuel the fuel. It prevents the refueling nozzle 50 from coming off from the refueling passage 3 when supplying fuel to the tank 1.

As shown in FIGS. 1 and 2, the fuel tank 1 has a rectangular box shape that internally partitions the fuel storage space 2 in which the liquid fuel is stored, and is formed of a metal plate material for reasons of strength and the like. .. A metal circular tubular filler pipe 4 for partitioning the fuel supply passage 3 to the fuel storage space 2 is fixed to the upper portion of the fuel tank 1.

In the filler pipe 4, the fuel filler port 5 at the upper end (one end side) faces diagonally upward and opens to the outside of the fuel tank 1 (outside the fuel storage space 2), and the opening 6 in the tank at the lower end (the other end side) is the fuel. The tank opening 7 of the fuel tank 1 is inserted in a state of opening inside the tank 1 (arranged and opened in the fuel storage space 2), and is fixed to the inner peripheral edge of the tank opening 7 by welding. By such welding, the outer peripheral surface of the filler pipe 4 and the inner peripheral edge of the tank opening 7 are sealed. The filler pipe 4 communicates the fuel storage space 2 in the fuel tank 1 with the outside of the fuel tank 1. A refueling cap 8 that seals the refueling port 5 is detachably attached to the refueling port 5 of the filler pipe 4. Further, a cylindrical metal inlet 10 shorter than the total length of the filler pipe 4 is fixed to the inner lower portion of the filler pipe 4.

As shown in FIGS. 2 to 4, the inlet 10 is fixed to the filler pipe 4 by welding in a state where the outer peripheral surface of the inlet 10 is close to or in contact with the inner peripheral surface of the filler pipe 4. A donut plate-shaped inlet end face portion 11 projecting inward is integrally formed by burring or the like over substantially the entire inner peripheral edge of the upper end portion (end portion on the fuel filler port 5 side (one side)) of the inlet 10. The inner peripheral surface of the inlet 10 partitions the nozzle insertion space 12, and the inner peripheral edge of the inlet end face portion 11 partitions the nozzle insertion opening 13. The lower end portion (end portion on the other end side) of the inlet 10 is arranged so as to substantially coincide with the lower end edge of the filler pipe 4, and opens to the fuel storage space 2 inside the opening 6 in the tank. The nozzle insertion opening 13 is formed to have a diameter larger than the diameter of the refueling nozzle 50 (see FIG. 7). The refueling nozzle 50 inserted from the refueling port 5 of the filler pipe 4 enters the nozzle insertion space 12 through the nozzle insertion opening 13. In this way, the inlet 10 internally partitions the nozzle insertion space 12 into which the refueling nozzle 50 is inserted from the nozzle insertion opening 13. With the refueling nozzle 50 inserted into the nozzle insertion opening 13, between the outer peripheral surface 52 of the refueling nozzle 50 and the inner peripheral edge of the inlet end surface portion 11, the fuel storage space 2 side to the outside of the fuel tank 1 during refueling. A gap (ventilation path for bleeding air) is provided to allow the outflow of air.

As shown in FIG. 4, a metal flap support member 20 is arranged in the nozzle insertion space 12 of the inlet 10. The flap support member 20 is a plate-shaped member integrally having a rectangular flat plate-shaped support substrate portion 21 and two upright plate portions 22 that are bent from both end edges of the support substrate portion 21 and face each other. The protruding height of the upright plate portion 22 from the support substrate portion 21 is set to be high on one end side and low on the other end side. A shaft insertion hole 23 is formed in one end of each upright plate portion 22 having a high protrusion height.

The region of a part (upper part in the present embodiment) of the peripheral wall of the inlet 10 constitutes a support member fixing portion 14 formed in a flat plate shape, and the flap support member 20 has a support substrate portion on the inner surface of the support member fixing portion 14. 21 is fixed to the inlet 10 by welding in a state of surface contact. That is, the flap support member 20 is fixed to the filler pipe 4 via the inlet 10. The flap support member 20 is fixed to the inlet 10 with one end side arranged on the fuel filler port 5 side and the other end side arranged on the tank inner opening 6 side (other side), and the two standing plate portions 22 are the inlet 10. Separate in the pipe radial direction. One end side of the flap support member 20 (a region connecting one end side of each upright plate portion 22 and the upright plate portion 22 on one end side of the support substrate portion 21) rotates the flap 30 via a rotation shaft 27 described later. A shaft support portion 24 for freely supporting is formed, and the shaft insertion hole 23 is formed in each of the two upright plate portions 22 (shaft support plate portion 26) of the shaft support portion 24. Further, the other end side of the flap support member 20 (the area connecting the other end side of each upright plate portion 22 and the upright plate portion 22 on the other end side of the support substrate portion 21) is a nozzle insertion opening from the shaft support portion 24. A reinforcing portion 25 extending to the opposite side of the 13 (the opening 6 side in the tank) to reinforce the shaft support portion 24 is configured. The support substrate portion 21 of the present embodiment is spot-welded to the inlet 10 at one or more locations on the shaft support portion 24 and at one or more locations on the reinforcing portion 25, for a total of two or more locations.

As shown in FIGS. 2 to 6, a flap 30 for opening and closing the nozzle insertion opening 13 is arranged in the nozzle insertion space 12. The flap 30 includes a flap main body 31 and a guide edge portion 32.

The flap body 31 is a plate-shaped member having a substantially circular outer circumference. Two flat plate-shaped shaft connecting plate portions 33 inserted between the two shaft support plate portions 26 of the flap support member 20 are integrally formed on the peripheral edge portion of the flap main body 31. The two shaft connecting plate portions 33 extend radially outward from the peripheral edge portion of the flap main body 31. Each shaft connecting plate portion 33 is formed with a shaft insertion hole 34 (see FIG. 6) that communicates with the shaft insertion hole 23 of each shaft support plate portion 26, and the rotating shaft 27 inserts the shaft insertion holes 23 and 34. do. The hinge mechanism 35 is configured by the shaft support plate portion 26, the shaft connecting plate portion 33, and the rotating shaft 27. The flap 30 is rotatably supported by the flap support member 20 between a closed position that closes the refueling passage 3 and an open position that tilts from the closed position to open the refueling passage 3 around the rotation shaft 27. .. That is, the flap 30 is tiltably supported with respect to the filler pipe 4 via the flap support member 20 and the inlet 10. The outer surface (the surface on the fuel filler port 5 side in the closed position) 36 of the flap main body 31 has a flat surface portion 62 formed at the outer peripheral end portion and a concave portion (a spherically concave region) formed in the center of the outer surface 36 of the flap main body 31. ) 38 and.

The recess 38 is recessed in a substantially spherical shape toward the opening 6 side in the tank while the flap body 31 is in the closed position described later. The central portion of the recess 38 is arranged in the center of the nozzle insertion opening 13 of the inlet 10. When the refueling nozzle 50 is inserted from the refueling port 5, the recess 38 guides the tip end portion of the refueling nozzle 50 in contact with the recess 38 toward the central portion of the recess 38. The flat surface portion 62 is formed in an annular shape.

The closing position of the flap main body 31 is defined by the flat surface portion 62 of the outer surface 36 of the flap main body 31 contacting substantially the entire peripheral region of the inlet end face portion 11 from the tank inner opening 6 side. The flap main body 31 at the closed position closes the oil supply passage 3 of the filler pipe 4 by closing the nozzle insertion opening 13 of the inlet 10. The opening position of the flap body 31 is a position where the flap body 31 tilts from the closed position toward the opening 6 in the tank to open the nozzle insertion opening 13 of the inlet 10, and the curved portion 60 of the guide edge 32 is the refueling nozzle. It is defined by abutting on the outer peripheral surface 52 of 50 (see FIG. 10). The flap main body 31 at the open position opens the oil supply passage 3 of the filler pipe 4 by opening the nozzle insertion opening 13 of the inlet 10.

The guide edge portion 32 is integrally molded in a region of the peripheral edge portion of the flap main body 31 below the center of the flap main body 31 in the vertical direction at the closed position. The guide edge portion 32 includes the lower end edge of the flap body 31 in the closed position. The guide edge portion 32 includes a curved portion 60 that curves from the peripheral edge of the flap main body 31 at the closed position, and a straight portion that extends linearly from the tip of the curved portion 60 to the radial outside of the flap main body 31 and toward the opening 6 in the tank. It has 61 and. The surface of the straight portion 61 on the fuel filler port 5 side (hereinafter referred to as a guide surface 39) at the closed position is inclined with respect to the flat surface portion 62 of the outer surface 36 of the flap main body 31. The inclination of the guide surface 39 is such that the guide surface 39 of the straight portion 61 of the guide edge portion 32 and the refueling nozzle 50 are in a nozzle contact state in which the curved portion 60 of the guide edge portion 32 abuts on the outer peripheral surface 52 of the refueling nozzle 50. The distance from the outer peripheral surface 52 is set so as to increase toward the opening 6 side in the tank.

A coil spring (urging member) 40 is arranged between the two shaft connecting plate portions 33, and the rotating shaft 27 inserts the inner diameter portion of the coil spring 40. One end 41 and the other end 42 of the coil spring 40 are in contact with the support substrate portion 21 of the flap support member 20 and the inner surface (surface on the opening 6 side in the tank) 37 of the flap body 31, respectively, and the flap body 31 is in contact with each other. , The coil spring 40 is urged in the direction (closing position) of closing the nozzle insertion opening 13.

In the upper region of the inlet end face portion 11 facing the flap support member 20, the protrusion height of the inlet end face portion 11 with respect to the inner peripheral surface of the inlet 10 is set higher than the other regions, and the flap support member 20 is inserted into the nozzle. The flange portion 15 that covers the opening 13 side is formed, and the nozzle insertion opening 13 is set to have a substantially elliptical shape in which the flange portion 15 partitions the upper side of the peripheral portions on the minor diameter side facing each other (see FIG. 3). With the refueling nozzle 50 inserted through the nozzle insertion opening 13, the outer peripheral surface 52 of the refueling nozzle 50 is between the outer peripheral surface 52 of the refueling nozzle 50 and the inner peripheral edge of the inlet end surface portion 11 in the major axis direction of the nozzle insertion opening 13. A gap wider in the radial direction than the gap between the nozzle insertion opening 13 and the inner peripheral edge of the inlet end face portion 11 in the minor axis direction is generated.

Next, the movement of the flap 30 when the refueling nozzle 50 of the refueling gun 9 is inserted into the filler pipe 4 when refueling the fuel tank 1 and the movement of the flap 30 when the refueling nozzle 50 is pulled out from the filler pipe 4 will be described. do.

When inserting the refueling nozzle 50 into the filler pipe 4, the operator removes the refueling cap 8 from the refueling port 5 and inserts the refueling nozzle 50 from the opened refueling port 5. The tip of the refueling nozzle 50 inserted from the refueling port 5 abuts on the recess 38 on the outer surface 36 (refueling port 5 side) of the flap main body 31 at the closed position. Further, since the central portion of the recess 38 of the flap main body 31 in the closed position is arranged in the center of the nozzle insertion opening 13 of the inlet 10, the tip of the refueling nozzle 50 in contact with the recess 38 is formed by the recess 38. It is guided to the center of the nozzle insertion opening 13. By pressing the flap body 31 toward the opening 6 in the tank (see FIG. 7), the flap body 31 in the closed position tilts toward the open position against the urging force of the coil spring 40, and the nozzle of the inlet 10 The refueling nozzle 50 is allowed to be inserted into the insertion opening 13 and the refueling nozzle 50 is allowed to enter the nozzle insertion space 12 (see FIG. 8). Further, when the refueling nozzle 50 is further inserted and the tip end portion of the refueling nozzle 50 moves toward the opening 6 side in the tank from the flap edge portion 32, the curved portion 60 of the guide edge portion 32 of the flap 30 becomes the outer peripheral surface 52 of the refueling nozzle 50. Abut. The guide surface 39 of the straight portion 61 of the guide edge portion 32 is set so that the distance from the outer peripheral surface 52 of the refueling nozzle 50 increases toward the opening 6 side in the tank in the nozzle contact state. Since the distance between the guide surface 39 and the outer peripheral surface 52 of the refueling nozzle 50 increases toward the opening 6 side in the tank in the nozzle contact state, there is a gap between the outer peripheral surface 52 of the refueling nozzle 50 and the guide surface 39. The approach space expanded toward the opening 6 side in the tank in the nozzle contact state is partitioned. After the refueling nozzle 50 is sufficiently inserted (see FIG. 9), the operator refuels with the base end side of the refueling nozzle 50 lowered and the flap body 31 lifted to the maximum opening position by the refueling nozzle 50 (FIG. 9). See 10). When the refueling is completed, the operator pulls out the refueling nozzle 50 from the nozzle insertion space 12 and the filler pipe 4.

When the refueling nozzle 50 is pulled out from the filler pipe 4, the outer peripheral surface 52 of the refueling nozzle 50 slides the guide surface 39 toward the refueling port 5, and is on the tank inner opening 6 side (other side) of the guide edge portion 32. ), The coil spring 51 of the refueling nozzle 50 enters the entry space between the outer peripheral surface 52 of the refueling nozzle 50 and the guide surface 39, and the surface of the coil spring 51 abuts on the guide surface 39. When the refueling nozzle 50 is further moved to the refueling port 5 side from this state, the coil spring 51 of the refueling nozzle 50 slides the guide surface 39 toward the refueling port 5 side (direction in which the approach space is reduced), and this sliding. The guide edge portion 32 of the flap 30 is separated from the outer peripheral surface 52 of the refueling nozzle 50, and the flap (guide edge portion 32 and the flap main body 31) 30 is tilted toward the open position. As a result, the coil spring 51 of the refueling nozzle 50 is allowed to move toward the refueling port 5 side from the guide edge portion 32. Finally, the operator attaches the refueling cap 8 and seals the refueling port 5.

In the flap 30 configured as described above, when the refueling nozzle 50 is pulled out from the filler pipe 4, the coil spring 51 of the refueling nozzle 50 located on the tank inner opening 6 side of the guide edge 32 is the guide edge of the flap 30. The portion 32 is separated from the outer peripheral surface 52 of the refueling nozzle 50, and the flap 30 is tilted toward the open position. As a result, the coil spring 51 of the refueling nozzle 50 is allowed to move toward the refueling port 5 side from the guide edge portion 32 of the flap 30. Therefore, since the refueling nozzle 50 can be pulled out from the refueling port 5 without hooking the coil spring 51 of the refueling nozzle 50 on the flap 30, it is possible to prevent the flap 30 from being damaged when the refueling nozzle 50 is pulled out from the refueling port 5. can.

Further, since the central portion of the recess 38 of the flap main body 31 at the closing position is arranged at the center of the nozzle insertion opening 13 of the inlet 10, the tip of the refueling nozzle 50 in contact with the recess 38 is located at the center of the nozzle insertion opening 13. I can guide you.

Further, since the flap main body 31 is urged to the closing position by the coil spring 40, the nozzle insertion opening 13 can be closed by the flap main body 31 when the refueling nozzle 50 is pulled out from the refueling port 5.

In the present embodiment, the guide edge portion 32 is provided in the peripheral portion of the flap main body 31 below the center of the flap main body 31 in the vertical direction at the closed position, but the present invention is not limited to this, for example. , Of the peripheral edge portion of the flap main body 31, may be provided on the entire circumference other than the position where the shaft connecting plate portion 33 is provided.

Further, in the present embodiment, the guide edge portion 32 having the curved portion 60 and the straight portion 61 is provided, but the guide edge portion 32 is not limited to this. The guide edge portion 32 may have a guide surface 39 that is set so that the distance from the outer peripheral surface 52 of the refueling nozzle 50 increases toward the opening 6 side in the tank in the nozzle contact state. For example, a guide edge portion 32 having a protrusion protruding downward from the flap main body 31 at the closed position may be provided. The protrusion may have a substantially circular cross-sectional shape in the direction in which the filler pipe 4 extends and intersects.

Further, in the present embodiment, the recess 38 is arranged so that the central portion of the recess 38 of the flap main body 31 is located at the center of the nozzle insertion opening 13 of the inlet 10 at the closed position, but the present invention is not limited to this. , The recess 38 can be arranged at a desired position. By appropriately arranging the recess 38, the tip of the refueling nozzle 50 can be guided to a desired position of the nozzle insertion opening 13 of the inlet 10 or the refueling passage 3 of the filler pipe 4.

Further, in the present embodiment, the recess 38 is formed on the outer surface 36 of the flap main body 31, but the present invention is not limited to this, and the structure may be such that the concave portion is not formed on the outer surface 36 of the flap main body 31.

Further, in the present embodiment, the refueling gun 9 is provided with a curved refueling nozzle 50, but the present invention is not limited to this, and a refueling nozzle extending linearly may be provided. Even in this case, the distance between the guide surface 39 of the straight portion 61 of the guide edge portion 32 and the outer peripheral surface 52 of the refueling nozzle 50 increases toward the opening 6 side in the tank in the nozzle contact state.

Further, in the present embodiment, the coil spring 51 is wound around the outer peripheral surface 52 of the refueling nozzle 50 to provide a protrusion protruding from the outer peripheral surface 52 of the refueling nozzle 50, but the present invention is not limited to this, and the coil is not limited to this. A protrusion may be provided so that a part of the outer peripheral surface 52 of the refueling nozzle 50 is projected without winding the spring 51, or the protrusion may not be provided on the outer peripheral surface 52 of the refueling nozzle 50.

Further, in the present embodiment, the coil spring 40 is provided between the two shaft connecting plate portions 33 as the urging member, but the present invention is not limited to this, and another urging member (instead of the coil spring 40) ( For example, a leaf spring or the like) may be provided, or an urging member may not be provided.

Although the embodiment to which the invention made by the present inventor is applied has been described above, the present invention is not limited by the essay and the drawings which form a part of the disclosure of the present invention according to this embodiment. That is, it should be added that all other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are of course included in the scope of the present invention.

For example, the shape of the fuel tank is not limited to the rectangular box shape, and can be set to any shape. Further, the donut plate-shaped inlet end face portion 11 protruding inward may not be formed in substantially the entire inner peripheral edge of the upper end portion of the inlet 10, but only the flange portion 15 may be formed. Further, the shape of the flap support member 20 is not limited to the shape of the present embodiment, and may be any shape that integrally has the shaft support portion 24 and the reinforcing portion 25.

The flap according to the present invention can be widely used in a fuel tank of a vehicle.

1 Fuel tank 2 Fuel storage space 3 Fuel supply channel 4 Filler pipe 5 Refueling port 6 Tank interior opening 10 Inlet 11 Inlet end face 12 Nozzle insertion space 13 Nozzle insertion opening 20 Flap support member 23, 34 Shaft insertion hole 21 Support board 27 rotations Shaft 30 Flap 31 Flap body 32 Guide edge 33 Shaft connecting plate 35 Hing mechanism 38 Recess 39 Guide surface 40 Coil spring (urging member)
50 Refueling nozzle 51 Coil spring 60 Curved part 61 Straight part

Claims (3)

A flap that partitions the refueling path into the fuel tank to which fuel is supplied by the refueling nozzle, has a refueling port on one side, and is tiltably supported on the other side with respect to the filler pipe connected to the fuel tank. There,
A supported portion rotatably supported with respect to the filler pipe is provided on one end side in the flap height direction, and the closed position for closing the oil supply passage and the oil supply passage tilted from the closed position to the other side. Can be tilted about the supported portion with respect to the open position to open , and is tilted from the closed position to the open position by being pushed by the lubrication nozzle inserted from the lubrication port. With the flap body,
It has a guide surface on which the refueling nozzle slides when the refueling nozzle is pulled out from a state in which the flap body is tilted to the open position by the refueling nozzle, and is provided on a part of the outer peripheral edge of the flap body. With a guide edge,
The guide edge portion is not provided on one end side of the flap body in the flap height direction, but is provided on the other end side of the flap body in the flap height direction.
The guide surface is tilted to the open position by the refueling nozzle, and the guide edge is in contact with the outer peripheral surface of the refueling nozzle, and the distance from the outer peripheral surface of the refueling nozzle is on the other side. A flap characterized by expanding towards. The flap according to claim 1.
The flap is characterized in that the one-sided surface of the flap body has a region recessed in a substantially spherical shape toward the other side. The flap according to claim 1 or 2.
The flap body is a flap characterized in that it is urged to the closed position by an urging member.

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