JP2008074281A - Cap for fuel tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel tank cap capable of feeding oil even if it is not removed from an oil feed port. <P>SOLUTION: The cap 1 for the fuel tank has a cylindrical body part 2 having both openable ends and a lid body 4 provided on the end of the body part 2. A male screw 3 thread-engaged with a female screw P2 of the oil feed port P1 is provided on an outer peripheral surface of the body part 2 and the lid body 4 closes the oil feed port P1. The lid body 4 is a hollow frame-like shape, and openings 4a, 4b are concentrically provided on a front side and an inner side. An opening/closing lid 11 urged in the closure state and releasing it by pressing action from the outside is provided on the front side opening 4a, and a distal end of the body part 2 is integrally fixed to the inner side opening 4b. An oil feed passage 5 having both openable ends is provided on the body part 2, and an elastic closure valve 7 insertable with an oil feed nozzle 20 is provided on the oil feed passage 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fuel tank cap mounted on a fuel tank of a vehicle fuel tank, and in particular, it is not necessary to remove the fuel tank from the fuel filler at the time of refueling, and can be removed and misplaced because it can be refueled without touching the cap. It is related with the cap for fuel tanks which can prevent.

The cap device described in Japanese Patent Application Laid-Open No. 2006-182046 includes a fuel tank cap that is removed at the time of refueling, with the other end of a long holding member attached to the fuel tank cap at one end fixed to the back surface of the fuel filler lid. It is the structure which can hold | maintain temporarily. In addition, the fuel tank cap and forgetting cap tightening alarm device described in Japanese Patent Application Laid-Open No. 2006-168517 is provided with an alarm signal generator for notifying forgetting cap tightening in the fuel tank cap, and the receiving device is disposed in the driver's seat. This prevents forgetting to tighten the cap.
JP 2006-182046 A JP 2006-168517 A

  However, since the fuel tank caps described in Patent Document 1 and Patent Document 2 are removed from the fuel filler port during refueling, a structure for temporarily holding the fuel tank cap is provided in the fuel tank cap and the vehicle body. There is a need.

  This invention solves the said subject, and it aims at providing the cap for fuel tanks which can be refueled, without removing from a fuel filler opening.

  In order to solve the above-mentioned problem, the invention according to claim 1 has a cylindrical body part whose both ends are open, and a lid provided at an end part of the body part, A male screw that is screwed into the female screw of the fuel filler opening is provided, and the lid body is a fuel tank cap that closes the fuel filler opening, and the lid body has a hollow frame shape with openings on the front side and inside. The front opening is provided with an open / close lid that is urged in a closed state and opened by a pressing action from the outside, and the front end of the trunk is integrated with the inner opening. A fuel supply passage that is open at both ends, and the fuel supply passage is provided with an elastic shut-off valve through which a fuel supply nozzle can be inserted. This is a tank cap.

  According to a second aspect of the present invention, the shut-off valve has a drum shape and both ends are fixed to the inside of the trunk portion, and the oil supply nozzle expands the shut-off valve from the front opening and the inner opening of the lid. The fuel tank cap according to claim 1, which is inserted.

  According to a third aspect of the present invention, in the first or second aspect, the body portion is provided with an air flow path having one end opened in the hollow portion of the lid and the other end opened on the fuel tank side. This is a fuel tank cap.

  According to the present invention, the fuel tank cap is attached to the fuel filler port of the fuel tank of the vehicle and can be inserted without pressing the fuel filler nozzle against the opening / closing lid without touching the cap. Therefore, the fuel can be supplied without removing the fuel tank cap from the fuel supply port. Therefore, misplacement due to removal of the fuel tank cap can be prevented during refueling.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.

  1 is a cross-sectional view showing a first embodiment of the present invention, FIG. 2 is a cross-sectional view showing a use state of the first embodiment, FIG. 3 is a plan view of FIG. 1, and FIG. is there.

  1 to 4, a fuel tank cap 1 is formed by screwing a male screw 3 provided on an outer peripheral surface of a body 2 into a female screw P2 of a fuel filler port P1 of a pipe P communicating with a fuel tank (not shown). The lid body 4 provided integrally with the end of the body portion 2 closes the fuel filler port P1.

  The body 2 is a cylindrical body whose both ends are open, and an oil supply passage 5 is provided by a cylindrical member whose both ends are open at a position eccentric from the axial center of the male screw 3, and the thickness of the wall 2a is circumferential. Different in direction. In addition, an air flow path 6 having an inner diameter smaller than that of the oil supply path 5 is provided in parallel with the oil supply path 5 in the wall portion 2 a of the trunk portion 2. The air channel 6 has an upper end 6a that opens into the hollow portion 4c of the lid 4 and a lower end 6b that opens toward the fuel tank.

  A tightening valve 7 formed of a rubber elastic material is accommodated in the oil supply passage 5 in a state where the ring-shaped thick portions 7 a at both ends are in contact with the inner wall of the oil supply passage 5. In addition, stopper rings 5 a and 5 b are fitted in both ends of the inner wall of the oil supply passage 5. The shut-off valve 7 is provided so that both ends are supported by the stopper rings 5 a and 5 b so as not to fall out of the oil supply passage 5. The shut-off valve 7 has a drum shape that decreases in diameter from both ends toward the central portion, and shuts off the oil supply passage 5 so that gas and liquid cannot pass through in a closed state in which the central portion is reduced in diameter.

  In the air flow path 6, a mesh filter member 8 for removing dust is attached to upper and lower ends 6a and 6b, and a gate portion 6c having a reduced diameter is provided below the upper end 6a. A spherical valve member 9 is accommodated in the air flow path 6 between the gate portion 6 c and the lower filter member 8.

  When the valve member 9 moves in the air flow path 6 by its own weight and abuts on the gate portion 6c, the air flow path 6 is closed. As shown in FIG. 1, the air flow path 6 is open at both ends if the valve member 9 is positioned on the lower filter member 8.

  The filter member 8 and the valve member 9 are incorporated in the air flow path 6 to constitute an overflow prevention mechanism 10. In the overflow prevention mechanism 10, when the fuel tank cap 1 is turned upside down, the valve member 9 moves to the gate portion 6 c due to its own weight and closes the air flow path 6, and liquid fuel such as gasoline passes through the air flow path 6. In order to prevent leakage from the fuel filler port.

  The lid 4 has a substantially hemispherical hollow frame shape, and has openings 4a and 4b concentrically provided on the front side and the inside, and has a hollow portion 4c inside. The opening 4a on the front side is provided at a position eccentric from the axis of the lid body 4, and the opening / closing lid 11 is pivotally attached to the hollow portion 4c side by a shaft attachment mechanism 12 having a coil spring. The open / close lid 11 is urged from the hollow portion 4c side to close the front side opening 4a, and is opened by pressing the oiling nozzle or the like from the outside.

  Further, the inner opening 4b is provided concentrically with the axis of the lid body 4, and the body 2 is fixed integrally with its tip connected, and the oil supply passage 5 and the air passage 6 communicates with the hollow portion 4c. A rubber packing sheet 13 is fixed to the lower flange surface of the lid body 4 protruding from the outer periphery of the body portion 2.

  Next, with reference to FIG.1 and FIG.2, the effect | action of the fuel tank cap 1 at the time of fuel supply is demonstrated.

  1 and 2, the fuel tank cap 1 is attached to a fuel filler port P1 of a pipe P communicating with the fuel tank. When refueling, the refueling nozzle 20 opens the open / close lid 11 from the opening 4a on the front side of the lid 4 by pressing and is inserted into the tightening valve 7 from the inner opening 4b. Is opened, the vicinity of the center portion is expanded, the oil supply nozzle 20 is inserted, and the oil supply passage 5 is unblocked. In the air flow path 6, the valve member 9 is positioned on the lower filter member 8, and communicates with the hollow portion 4 c from the fuel tank side.

  When the fuel supply nozzle 20 is pulled out from the opening / closing lid 11 after refueling, the opening / closing lid 11 is urged by the shaft attachment mechanism 12 to return to the closed state. Further, the shut-off valve 7 is again in a closed state in which the central portion 7b has a reduced diameter, and the oil supply passage is shut off.

  As described above, the fuel tank cap is attached to the fuel filler opening of the fuel tank of the vehicle, and can be inserted while pressing the fuel filler nozzle against the opening / closing lid without touching the cap. Therefore, the fuel can be supplied without removing the fuel tank cap from the fuel supply port. Therefore, misplacement due to removal of the fuel tank cap can be prevented during refueling.

It is the schematic which shows Example 1 of this invention. 2 is a cross-sectional view showing a usage state of Example 1. FIG. It is a top view of FIG. It is the sectional view on the AA line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel tank cap 2 Body part 2a Wall part 3 Male screw 4 Lid 4a, 4b Opening part 4c Hollow part 5 Oil supply path 5a, 5b Stopper ring 6 Air flow path 6a, 6b End part of 2nd cylinder member 6c Gate part 7 Clamping valve 7a Thick part 7b Center part 8 Filter member 9 Valve member 10 Overflow prevention mechanism 11 Opening / closing lid 12 Axing mechanism 13 Packing sheet 20 Oiling nozzle P Pipe P1 Oiling port P2 Female thread

Claims (3)

It has a cylindrical body part that is open at both ends, and a lid provided at the end part of the body part, and an external thread that engages with an internal thread of the oil filler opening is provided on the outer peripheral surface of the body part. And a cap for the fuel tank in which the lid closes the fuel filler port,
The lid has a hollow frame shape and concentric openings on the front side and inside,
The front side opening is provided with an open / close lid that is urged in a closed state and opened by a pressing action from the outside, and the front end of the trunk is integrally fixed to the inner opening,
2. A fuel tank cap according to claim 1, wherein an oil supply passage that is open at both ends is provided in the body portion, and an elastic shut-off valve through which a fuel supply nozzle can be inserted is provided in the oil supply passage.   2. The fuel tank according to claim 1, wherein the shut-off valve has a drum shape and both ends are fixed to the inside of the body portion, and a fuel supply nozzle is inserted through an expansion of the shut-off valve from the front opening and the inner opening of the lid. Cap.   3. The fuel tank cap according to claim 1, wherein an air flow path having one end opened in the hollow portion of the lid and the other end opened toward the fuel tank is provided in the body portion.

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