JP6655304B2 - Fuel filler pipe - Google Patents

Description

  The present invention relates to a fuel supply pipe that serves as a passage when fuel is supplied to a fuel tank of a vehicle.

  2. Description of the Related Art Conventionally, in vehicles, fuel is supplied by a fuel gun from a fuel filler port of a fuel filler pipe, and the fuel filler port of the fuel filler pipe is closed by attaching a fuel filler cap.

  By the way, since the refueling cap is detached from the refueling port at the time of refueling, there is a possibility that the user may forget to attach the refueling cap to the refueling port after refueling. If the vehicle is driven without closing the fuel filler port with the fuel filler cap, there is a risk of fuel leakage or scattering, which is very dangerous.

  In order to avoid this, for example, Patent Literature 1 discloses a fuel filler pipe that does not require the attachment and detachment of a filler cap. The fuel filler pipe has one end connected to the fuel tank and the other end formed with a filler port through which a nozzle of a filler gun can be inserted, and a shaft rotatable around the filler port in a nozzle insertion direction. When the fuel is not refueled, it is urged by the urging means to the opposite side of the nozzle insertion direction to close the refueling port. A door member configured to rotate in the nozzle insertion direction against the force to open the fuel filler port, so that it is not necessary to perform the work of attaching and removing the fuel filler cap.

JP 2005263321 A

  However, since the fuel filler pipe of Patent Document 1 opens and closes the fuel filler port by pressing the door member from the thickness direction thereof with the nozzle tip of the fuel gun, the contact between the door member and the nozzle of the fuel filler gun is repeated. As a result, the door member is deformed, and when the door member closes the fuel filler port, there is a possibility that airtightness between the peripheral edge of the fuel filler port and the door member cannot be maintained.

  The present invention has been made in view of such a point, and an object of the present invention is to eliminate the need to perform attachment / detachment work of a refueling cap, and furthermore, even if the refueling work is repeatedly performed, a failure around the refueling port is caused. An object of the present invention is to provide a fuel supply pipe in which the generation of fuel is difficult.

  In order to achieve the above object, the present invention does not require the work of attaching / detaching a fuel filler cap, and furthermore, when inserting a nozzle of a fuel gun into a fuel filler pipe of a fuel filler pipe, a nozzle tip is provided at a portion which closes the fuel filler port. It is characterized by devising so as not to contact from the thickness direction.

That is, in the first invention, the fuel supply port is provided at one end, and the other end of the fuel supply tank is connected to the cylindrical fuel supply pipe main body. An opening / closing plate that is rotatably supported and has a pin protruding at a position distant from the rotation axis, so as to cover the oil supply port of the oil supply pipe main body, and to be rotatable about a central axis. A disk-shaped handle which is attached to the periphery of the filler port of the filler pipe main body and has a through-hole at a position corresponding to the filler port so that the nozzle of the filler gun can be inserted and removed, and the handle is provided on one side with respect to the filler pipe main body. A biasing means for biasing the handle so as to rotate; a guide groove extending in a radial direction of the handle and slidably fitted with the pin is provided on the oil supply pipe main body side of the handle. The handle is moved to one side by the urging force of the urging means. When the guide groove is turned, the guide groove guides the pin radially inward, whereby the opening / closing plate rotates in a direction approaching the through hole to close the through hole, and the handle is moved by the urging means. When the guide groove is rotated to the other side against the urging force, the guide groove guides the pin radially outward, whereby the opening / closing plate rotates in a direction away from the through hole to open the through hole. A plurality of the guide grooves are arranged at regular intervals around the center axis of the handle and so as to extend radially, and the opening and closing plates are arranged at regular intervals at positions corresponding to the respective guide grooves. A plurality of the pins are arranged in parallel with each other, and the pins protruding from each of the pins are fitted in the respective guide grooves, and are rotated in a direction approaching the through holes, and are linked with another opening / closing plate to form the through holes. Is configured to close the hole, The opening / closing plate is in contact with the opposing side surfaces of the adjacent opening / closing plate so as to form an overlapping surface in a state where the opening / closing plate is rotated in a direction approaching the through hole, and further, each of the opening / closing plates has the same sector shape. The overlapping surface of each of the open / close plates extends radially from the central axis in a state where the respective open / close plates are in contact with each other .

In the second invention, in the first invention, the one side facing the opening and closing plate adjacent each opening and closing plate, protrusions extending along the extending direction of the one side the is formed, each On the other side of the opening / closing plate facing the adjacent opening / closing plate, the opening / closing plate is recessed toward the inside of each opening / closing plate and extends along the extension direction of the other side surface, and each opening / closing plate approaches the through hole. A step is formed in which the protrusions of the adjacent opening / closing plates are fitted when turning in the direction.

According to a third aspect , in the second aspect , the ridge portion is provided on a side surface on the rotation axis side among two side surfaces of the respective opening / closing plates facing the adjacent opening / closing plate. Features.

According to a fourth aspect, in any one of the first to third aspects, an end of one end of the opening / closing plate in the circumferential direction at an arc portion is formed on a periphery of the fuel filler opening by a rotation shaft. The pin is protrudingly provided on the handle side at the arcuate portion of each of the open / close plates and at the other end in the circumferential direction while being rotatably supported in a direction crossing the center. It is characterized by being.

  According to the first aspect of the present invention, when refueling, when a refueler grasps the handle with one hand and turns it to the other side against the urging force of the urging means, the guide groove formed in the handle changes the pin of the opening / closing plate. The opening / closing plate is pivoted so as to be separated from the through-hole by guiding the outer side in the radial direction to open the through-hole. Then, in a state where the through-hole is opened, when the refueler grasps the refueling gun with the other hand and inserts the nozzle into the through-hole of the handle, the nozzle is inserted into the refueling port, and the refueling can be started. At this time, when the fueler releases one hand from the handle, the handle starts to rotate to one side by the urging force of the urging means, and the guide groove formed in the handle guides the pin of the opening / closing plate radially inward. Therefore, the opening / closing plate attempts to rotate so as to approach the through hole, but stops rotating by contacting the outer peripheral surface of the nozzle inserted into the through hole. Thereafter, after the refueling work is completed, when the fueler pulls out the nozzle from the through hole, the rotation of the opening / closing plate, which has stopped rotating by the outer peripheral surface of the nozzle, is restarted, and then the opening / closing plate closes the through hole. I do. In this way, there is no need to attach / remove the refueling cap when refueling, and even if the refueling operation is performed repeatedly, the nozzle tip of the refueling gun does not contact the open / close plate from its plate thickness direction. The deformation of the plate can be prevented, and a failure around the filler port of the fuel filler pipe can be prevented.

In addition, since the rotation angle of each opening / closing plate when opening and closing the through hole can be made smaller than when opening and closing the through hole with one opening / closing plate, the rotation angle of the handle during refueling work can be made smaller. In addition, the time required for refueling work can be shortened.

Further, when each opening / closing plate closes the through hole, each opening / closing plate is located at the same position in the plate thickness direction, so that the structure around the fuel supply port of the fuel filler pipe can be made compact in the plate thickness direction of the opening / closing plate.

In the second invention, when the through-hole is closed by each of the opening / closing plates, the respective opening / closing plates overlap with each other in the plate thickness direction, so that the adjacent opening / closing plates hardly shift in the plate thickness direction, and the airtightness is reduced. Can be even higher.

In the third invention, when each opening / closing plate is rotated so as to approach the through hole with the nozzle of the refueling gun inserted into the through hole, the ridge portion of each opening / closing plate comes into contact with the outer peripheral surface of the nozzle. Further, when the nozzle is pulled out from the through-hole, the outer peripheral surface of the nozzle and the ridge portion are rubbed. Therefore, since the portions other than the ridges on the side surfaces on which the ridges of the respective opening / closing plates are formed do not deteriorate due to contact with the nozzle outer peripheral surface, the through holes are formed in the respective opening / closing plates even when the refueling operation is performed repeatedly. High airtightness can be maintained for a long time without lowering the degree of adhesion between adjacent open / close plates when closed.

FIG. 2 is a perspective view of a fuel filler pipe according to Embodiment 1 of the present invention and a fuel tank to which the fuel filler pipe is connected. It is a perspective view of the circumference of the filler hole of the fuel filler pipe concerning Embodiment 1 of the present invention. FIG. 3 is a schematic configuration diagram of an inside of a fuel filler port side of a fuel filler pipe viewed from a direction A in FIG. 2. FIG. 4 is a diagram illustrating a state in which the fueler is starting to turn the handle after FIG. 3. It is a figure which shows the state immediately after a fueler turns a handle further after FIG. 4 and a through-hole is opened. FIG. 6 is a diagram illustrating a state immediately after the refueler has inserted the nozzle of the refueling gun into the through hole and started refueling after FIG. 5. FIG. 4 is a diagram corresponding to FIG. 3 according to a second embodiment of the present invention. It is a perspective view of an opening and closing plate concerning Embodiment 2 of the present invention. FIG. 7 is a diagram corresponding to FIG. 6 according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example.
<< First Embodiment of the Invention >>
1 and 2 show a fuel supply pipe 1 according to a first embodiment of the present invention. The fuel filler pipe 1 serves as a passage for supplying fuel such as gasoline or light oil to the fuel tank 10 of the vehicle, and has a fuel filler port 2a (see FIGS. 3 to 6) at one end. A cylindrical fuel supply pipe main body 2 having the other end connected to the tank 10, and an air containing vaporized fuel being drawn from the fuel tank 10 to the fuel supply port 2 a side of the fuel supply pipe main body 2 when fuel is supplied. And a cylindrical breather tube 3 having a small diameter.

  On the oil supply port 2a side of the oil supply pipe main body 2, a substantially disk-shaped handle 4 covers the oil supply port 2a of the oil supply pipe main body 2, and is rotatable about its central axis C1. 2 are attached to the peripheral edge of the fuel supply port 2a.

  A through hole 4a through which the nozzle G1 of the refueling gun can be inserted and removed is formed at the center of the handle 4, and the through hole 4a corresponds to the refueling port 2a of the refueling pipe main body 2.

  Further, three guide grooves 4b extending in the radial direction of the handle 4 are formed on the oil supply port 2a side of the handle 4 so as to extend radially at equal intervals around the central axis C1.

  As shown in FIGS. 3 to 6, three opening / closing plates 5 are provided between the oil supply port 2a of the oil supply pipe main body 2 and the handle 4 and at positions corresponding to the respective guide grooves 4b. They are arranged at equal intervals around the axis C1.

  Each of the open / close plates 5 has the same shape in which one plate is divided into three around the central axis C1 so that a dividing line extends radially from the central axis C1 of the handle 4, and the center of the handle 4 Each has a fan shape when viewed from the axis C1 direction.

  One end of each of the opening / closing plates 5 on one side in the circumferential direction around the central axis C1 is rotatably supported by a rotating shaft 5a so as to be rotatable in a direction intersecting the center of the cylinder at the peripheral edge of the oil supply port 2a. A pin 5b is protrudingly provided on the handle 4 side at an end on the other side in the circumferential direction around the central axis C1 of each opening / closing plate 5.

  That is, the pin 5b is provided at a position away from the rotation axis, and is slidably fitted in the corresponding guide groove 4b.

  A coil spring 6 (biasing means) extending in a direction intersecting with the central axis C1 is provided between the handle 4 and the oil supply pipe main body 2.

  One end of the coil spring 6 is fixed to the back surface of the handle 4, and the other end is fixed to the periphery of the oil supply port 2 a of the oil supply pipe main body 2. The coil spring 6 connects the handle 4 to the oil supply pipe main body. 2 is urged to rotate to one side.

  When the handle 4 is rotated to one side by the urging force of the coil spring 6, the guide grooves 4b guide the pins 5b of the open / close plates 5 radially inward, as shown in FIGS. Thus, each of the opening / closing plates 5 rotates in a direction approaching the through hole 4a. The opening / closing plate 5 is linked to another opening / closing plate 5 to close the through hole 4a in a state where the opening / closing plate 5 rotates in a direction approaching the through hole 4a.

  That is, in a state where each of the open / close plates 5 is rotated in a direction approaching the through hole 4a, the open / close plate 5 comes into contact with the opposing side surface 5c of the adjacent open / close plate 5 so as to form the overlap surface 5A. 5A has the same fan shape extending radially from the central axis C1.

  On the other hand, when the handle 4 is rotated to the other side against the urging force of the coil spring 6, as shown in FIGS. 4 and 5, the guide grooves 4b cause the pins 5b of the open / close plates 5 to move in the radial direction. By being guided to the outside, the respective opening / closing plates 5 rotate in a direction away from the through holes 4a to open the through holes 4a.

  At this time, the outer shape of the handle 4 is designed to have such a size that the respective open / close plates 5 do not protrude outside the outer peripheral edge of the handle 4 in a state where the respective open / close plates 5 are rotated in a direction away from the through hole 4a. I have.

  Next, a case in which a refueler refuels a vehicle in which the fuel supply pipe 1 according to the embodiment of the present invention is incorporated will be described.

  First, the refueler grasps the handle 4 with one hand and rotates the handle 4 to the other side (X1 direction in FIG. 3) against the urging force of the coil spring 6. Then, as shown in FIGS. 3 to 5, each of the guide grooves 4b guides the pin 5b of each of the open / close plates 5 radially outward, so that each of the open / close plates 5 is separated from the through hole 4a. Rotate to open the through hole 4a.

  Next, the refueler grasps a refueling gun (not shown) with the other hand and inserts the nozzle G1 into the open through hole 4a. Then, the nozzle G1 is inserted into the refueling port 2a so that refueling can be started, and refueling is started by the refueler pulling a trigger of the refueling gun.

  At this time, when the fueler releases one hand from the handle 4, the handle 4 starts to rotate to one side (X2 direction in FIG. 3) by the urging force of the coil spring 6. As shown in FIG. 6, the guide grooves 4b guide the pins 5b of the open / close plates 5 inward in the radial direction, so that the open / close plates 5 try to rotate so as to approach the through holes 4a. Comes into contact with the outer peripheral surface of the nozzle G1 inserted into the through hole 4a, and the rotation stops.

  Thereafter, after the refueling operation is completed, the refueler pulls out the nozzle G1 from the through hole 4a. Then, the rotation of each of the open / close plates 5 whose rotation has been stopped by the outer peripheral surface of the nozzle G1 is restarted, and thereafter, each of the open / close plates 5 closes the through hole 4a.

  As described above, in the invention according to the first embodiment of the present invention, it is not necessary to perform the work of attaching and detaching the refueling cap at the time of refueling, and the tip of the nozzle G1 of the refueling gun has its plate even when the refueling work is repeatedly performed. Since the opening / closing plates 5 do not come into contact with each other from the thickness direction, deformation of the opening / closing plates 5 can be prevented, and failure around the fuel supply port 2a of the fuel filler pipe 1 can be prevented.

  Further, in the first embodiment of the present invention, the through-hole 4a is opened and closed by the three opening / closing plates 5, and the opening / closing of the through-hole 4a in comparison with the case where the single opening / closing plate 5 opens and closes the through-hole 4a. The rotation angle of each open / close plate 5 can be reduced. Therefore, the rotation angle of the handle 4 during the refueling operation can be reduced, and the time required for the refueling operation can be shortened.

Further, when each opening / closing plate 5 closes the through hole 4a, each opening / closing plate 5 is located at the same position in the plate thickness direction, so that the structure around the fuel supply port 2a of the fuel filler pipe 1 is changed in the plate thickness direction of the opening / closing plate 5. Can be compact.
<< Embodiment 2 of the invention >>
7 to 9 show a second embodiment of the present invention. In the second embodiment, only the structure of each of the open / close plates 5 is different from that of the first embodiment, and the other components are the same as those of the first embodiment. Therefore, only the portions different from the first embodiment will be described below in detail.

  A protrusion 51 extending along the extension direction of the one side surface 5c is formed on a half of one side surface 5c of the opening and closing plate 5 of the second embodiment facing the adjacent opening and closing plate 5 on the handle 4 side. . That is, the protruding ridge portion 51 is provided on the side surface 5c on the rotation shaft 5a side of the two side surfaces 5c of the respective opening / closing plates 5 facing the adjacent opening / closing plate 5.

  On the other hand, a half of the other side surface 5c of each open / close plate 5 facing the adjacent open / close plate 5 on the handle 4 side is depressed toward the inside of each open / close plate 5 and extends along the extension direction of the other side surface 5c. An extending step portion 52 is formed. That is, the step portion 52 is provided on the side surface 5c on the pin 5b side of the two side surfaces 5c of the respective opening / closing plates 5 facing the adjacent opening / closing plate 5.

  The step 52 has a shape corresponding to the protrusion 51, and when each of the open / close plates 5 rotates in a direction approaching the through hole 4 a, the protrusion of the adjacent open / close plate 5. 51 are fitted.

  Therefore, according to the second embodiment of the present invention, when the through-holes 4a are closed by the respective open / close plates 5, the respective open / close plates 5 overlap with each other in the plate thickness direction. It becomes difficult to shift in the direction, and the airtightness can be further improved.

  When each opening / closing plate 5 is rotated so as to approach the through hole 4a with the nozzle G1 of the refueling gun inserted into the through hole 4a, the ridge 51 of each opening / closing plate 5 is formed on the outer peripheral surface of the nozzle G1. As a result, when the nozzle G1 is pulled out from the through hole 4a, the outer peripheral surface of the nozzle G1 and the ridge portion 51 rub against each other. Therefore, the portion other than the ridge portion 51 of the side surface 5c where the ridge portion 51 of each opening / closing plate 5 is formed does not deteriorate due to contact with the outer peripheral surface of the nozzle G1. High airtightness can be maintained for a long time without lowering the degree of adhesion between the adjacent opening / closing plates 5 when the opening / closing plate 5 closes the through hole 4a.

  In the first and second embodiments of the present invention, the through hole 4a is opened and closed by the three opening / closing plates 5, but the through hole 4a may be opened and closed by one or two opening / closing plates 5. Further, a structure in which the through-hole 4a is opened and closed by four or more opening / closing plates 5 may be employed.

  In the first and second embodiments of the present invention, the handle is urged by the coil spring 6, but the handle 4 may be urged by other urging means.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a fuel supply pipe serving as a passage when fuel is supplied to a fuel tank of a vehicle.

REFERENCE SIGNS LIST 1 fuel filler pipe 2 filler pipe main body 2 a filler port 4 handle 4 a through hole 4 b guide groove 5 opening / closing plate 5 A overlapping surface 5 b pin 6 coil spring (biasing means)
51 Protrusions 52 Steps 10 Fuel tank G1 Nozzle

Claims (4)

A cylindrical oil supply pipe main body having an oil supply port at one end and the other end connected to the fuel tank;
An opening / closing plate which is rotatably supported on the periphery of the oil supply opening of the oil supply pipe main body in a direction intersecting with the cylinder center line and has a pin protruded at a position away from the rotation axis;
A through-hole corresponding to the oil supply port is provided so as to cover the oil supply port of the oil supply pipe main body and to be rotatable around the central axis at the periphery of the oil supply port of the oil supply pipe main body so that a nozzle of the oil supply gun can be taken in and out. A disk-shaped handle at a position where
Urging means for urging the handle to rotate to one side with respect to the oil supply pipe main body,
A guide groove extending in the radial direction of the handle and slidably fitted with the pin is provided on the oil supply pipe main body side of the handle, and the handle is moved to one side by the urging force of the urging means. When the guide groove guides the pin radially inward, the opening / closing plate pivots in a direction approaching the through hole to close the through hole, while the handle is pressed by the urging means. When the guide groove is rotated to the other side against the urging force, the guide groove guides the pin radially outward, so that the opening / closing plate rotates in a direction away from the through hole to open the through hole. Is configured to
A plurality of the guide grooves are arranged at equal intervals around the center axis of the handle, and are arranged so as to extend radially.
A plurality of the open / close plates are arranged at equal intervals at positions corresponding to the respective guide grooves, and the pins protruding from each of the open / close plates are respectively fitted into the respective guide grooves, in a direction approaching the through hole. In a rotated state, it is configured to close the through hole in cooperation with another opening and closing plate,
Further, each of the open / close plates is in a state of being rotated in a direction approaching the through hole, and is in contact with an opposing side surface of an adjacent open / close plate so as to form a superimposed surface,
Furthermore, each of the opening and closing plates has the same fan shape,
The fuel supply pipe according to claim 1, wherein each of the overlapping surfaces of each of the opening / closing plates extends radially from the central axis in a state where the opening / closing plates are in contact with each other. The fuel filler pipe according to claim 1 ,
On one side of each of the opening / closing plates facing the adjacent opening / closing plate, a ridge extending along the extension direction of the one side is formed,
On the other side face of each of the open / close plates facing the adjacent open / close plate, it is recessed toward the inside of each of the open / close plates and extends along the extension direction of the other side surface. A fuel filler pipe characterized in that a step portion is formed in which the projecting ridges of the adjacent opening / closing plates are fitted when turned in the approaching direction. The fuel supply pipe according to claim 2 ,
The fuel supply pipe according to claim 1, wherein the protruding portion is provided on a side surface on a rotation axis side among two side surfaces of each of the opening / closing plates facing an adjacent opening / closing plate. The fuel filler pipe according to any one of claims 1 to 3 ,
One end of each of the open / close plates in an arc portion and a circumferential direction is rotatably supported by a rotation shaft in a direction intersecting the center of the cylinder at the periphery of the fuel filler port, while each of the open / close plates is the arc portion a and the end portion of the other side of the circumferential direction, the fuel filler tube, characterized in that the pin is collision set in.

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