초록 ▼

A fuel feeding device 10 has a first shutter mechanism 20 that has a first closing member 21 to open and close a first seal opening UP1, a second shutter mechanism 30 that has a second closing member 31 to open and close a second seal opening UP2, and a coupling mechanism 40 that guides the second c

A fuel feeding device 10 has a first shutter mechanism 20 that has a first closing member 21 to open and close a first seal opening UP1, a second shutter mechanism 30 that has a second closing member 31 to open and close a second seal opening UP2, and a coupling mechanism 40 that guides the second closing member 31 to be opened and closed in conjunction with the opening and closing action of the first closing member 21. In the process of fuel supply, when a fuel supply gun presses open the first closing member 21, the second closing member 31 moves in conjunction with the first closing member 21 via the coupling mechanism 40 to open the second seal opening UP2. In the fuel feeding device 10 for a fuel tank, the opening and closing mechanism of the closing member arranged in an inlet pipe IP is substantially free from any significant trouble.

대표청구항 ▼

What is claimed is: 1. A fuel feeding device for a fuel tank, which is used to feed a supply of fuel from a fuel supply gun to the fuel tank through a fuel conduit, the fuel feeding device comprising: a partition member that parts the fuel conduit into an opening-side conduit section and a tank-sid

What is claimed is: 1. A fuel feeding device for a fuel tank, which is used to feed a supply of fuel from a fuel supply gun to the fuel tank through a fuel conduit, the fuel feeding device comprising: a partition member that parts the fuel conduit into an opening-side conduit section and a tank-side conduit section; a conduit forming member that is provided with a first seal opening disposed in the opening-side conduit section and a second seal opening formed in the partition member; a first shutter mechanism that bas a first closing member to open and close the first seal opening; a second shutter mechanism that has a second closing member to open and close the second seal opening; and a coupling mechanism that guides the second closing member to be opened and closed in conjunction with the opening and closing action of the first closing member, wherein the second closing member is opened in a direction in which the fuel supply gun is inserted in to the fuel conduit. 2. A fuel feeding device in accordance with claim 1, wherein the coupling mechanism comprises: a guide member that moves up and down with a pivotal rotation of the first closing member, so as to make the second closing member open and close the second seal opening; and a spring that presses the first closing member and the second closing member in a closing direction by means of the guide member. 3. A fuel feeding device in accordance with claim 2, wherein the partition member has a through hole, which the guide member passes through, and the coupling mechanism further comprises a third gasket, which is attached to the guide member and seals periphery of the through hole, while the second closing member closes the second seal opening. 4. A fuel feeding device in accordance with claim 1, wherein the first shutter mechanism comprises a first support arm that supports a lower face of the first closing member and rotates in a pivotal manner coaxially with the first closing member, the second shutter mechanism comprises a second support arm that supports a lower face of the second closing member and rotates in a pivotal manner coaxially with the second closing member, and the coupling mechanism transmits an opening and closing force of the first closing member to the second closing member through a movement of the first support arm and the second support arm. 5. A fuel feeding device in accordance with claim 4, wherein the coupling mechanism comprises: a first pinion gear that is arranged about a rotating shaft of the first support arm; a first rack gear that is formed on one end of a guide member to engage with the first pinion gear; a second pinion gear that is arranged about a rotating shaft of the second support arm; and a second rack gear that is formed on the other end of the guide member to engage with the second pinion gear, wherein the coupling mechanism is configured such that a rotating of the first support arm causes the first pinion gear and the first rack gear to rotate and to move the guide member, and the movement of the guide member causes the second support arm pivotally rotates via the second rack gear and the second pinion gear to open and close the second closing member. 6. A fuel feeding device in accordance with claim 1, the fuel feeding device further comprising a dust cap that is detachably attached to an upper end of an inlet pipe and covers an upper area of the first seal opening. 7. A fuel feeding device in accordance with claim 1, wherein the first closing member is supported on an upper end of an inlet pipe in a pivotally rotatable manner and is arranged to open the first seal opening when one end of the first closing member is pulled up, and the coupling mechanism comprises a linkage mechanism that converts a force of pulling up the first closing member into a force of rotating the second closing member. 8. A fuel feeding device in accordance with claim 7, wherein the linkage mechanism is coupled with the second closing member through the second seal opening. 9. A fuel feeding device in accordance with claim 8, wherein the opening-side conduit section has multiple guide projections that are protruded toward a center of the opening-side conduit section, the guide projections extending to a certain position to prevent a fuel supply gun from interfering with the linkage mechanism while the first closing member is open. 10. A fuel feeding device in accordance with claim 1, wherein the first closing member has a pressure regulator for regulating pressure in the fuel tank. 11. A fuel feeding device in accordance with claim 1, the fuel feeding device further comprising: a first gasket that is composed of a first scaling material and is interposed and seals between a periphery of the first seal opening and the first closing member; and a second gasket that is composed of a second sealing material and is interposed and seals between a periphery of the second seal opening and the second closing member, wherein the first sealing material of the first gasket is different from the second sealing material of the second gasket. 12. A fuel feeding device in accordance with claim 11, wherein the first sealing material has better sealing properties at low temperatures than the second sealing material. 13. A fuel feeding device in accordance with claim 12, wherein the first scaling material is any one of butadiene-acrylonitrile copolymer (NBR), alkyl-siloxane condensate (Q), and trifluoropropyl-methyl-siloxane condensate (FVMQ). 14. A fuel feeding device in accordance with claim 12, wherein the second sealing material is any one of vinylidene fluoride-hexafluoropropylene copolymer (FKM) and hydrogenated butadiene acrylonitrile rubber (HNBR). 15. A fuel feeding device for a furl tank, which feeds a supply of fuel to the fuel tank through a fuel conduit of an inlet pipe, the fuel feeding device comprising: a conduit forming member that defines the fuel conduit and has a first seat face, which faces the fuel conduit and is formed closer to an inlet opening of the fuel conduit, and a second seat face, which faces the fuel conduit and is formed closer to the fuel tank than the first seat face; a first closing member that is moved in a closing direction toward the first seat face; a first gasket that is composed of a first sealing material and is seated on the first seat face by a closing action of the first closing member, a second closing member that is moved in a closing direction toward the second seat face; and a second gasket that is composed of a second sealing material, wherein the first seating material has better sealing properties at low temperatures than the second sealing material. 16. A fuel feeding device in accordance with claim 15, wherein the first sealing material is any one of butadiene-acrylonitrile copolymer (NBR), alkyl-siloxane condensate (Q), and trifluoropropyl-methyl-siloxane condensate (FVMQ). 17. A fuel feeding device in accordance with claim 15, wherein the second sealing material is any one of vinylidene fluoride-hexafluoropropylene copolymer (FKM) and hydrogenated butadiene acrylonitrile rubber (HNBR). 18. A fuel feeding device in accordance with claim 15, wherein a top face of the second closing member includes a relatively thicker center stepped portion, the center stepped portion being configured to have a height difference from the second gasket and to prevent an inserted end of the fuel supply gun from coming into contact with the second gasket. 19. A fuel feeding device in accordance with claim 18, wherein the second gasket is received on a ring-shaped recess formed on an outer circumferential portion of the second closing member.