IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0933207
(2004-09-02)
|
등록번호 |
US-7278547
(2007-10-09)
|
우선권정보 |
JP-2003-314149(2003-09-05); JP-2003-335071(2003-09-26); JP-2003-393836(2003-11-25) |
발명자
/ 주소 |
- Hagano,Hiroyuki
- Nakagawa,Masayuki
- Akagi,Masaki
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
11 |
초록
▼
A fuel cap has a male threading element which is formed on an outer circumference of a closer of the fuel cap, a female threading element which is formed on an inner wall of a filler neck, and a handle. Rotation of the handle in a closing direction screws the male threading element into the female
A fuel cap has a male threading element which is formed on an outer circumference of a closer of the fuel cap, a female threading element which is formed on an inner wall of a filler neck, and a handle. Rotation of the handle in a closing direction screws the male threading element into the female threading element. A stopper formed on the male threading element comes into contact with the start end of the female threading element to complete the closing operation. At this fully closed position, a gasket located between the closer and a sealing face of the filler neck is pressed and displaced in an axial direction to seal the sealing face of the filler neck with a sealing face pressure of not less than a preset level.
대표청구항
▼
What is claimed is: 1. A cap device, comprising: a pipe-shaped opening formation member having a tank opening and a flow path connecting the tank opening to a tank; a cap having a closer that closes the tank opening and a handle that is mounted on the closer to rotate the closer in either of a clos
What is claimed is: 1. A cap device, comprising: a pipe-shaped opening formation member having a tank opening and a flow path connecting the tank opening to a tank; a cap having a closer that closes the tank opening and a handle that is mounted on the closer to rotate the closer in either of a closing direction and an opening direction; a gasket that is located between an outer circumference of the closer and a sealing face of the opening formation member; and a screw mechanism having a first threading element that is formed on an inner wall of the opening formation member and a second threading element that is formed on the outer circumference of the closer to engage with the first threading element, where the second threading element is screwed into the first threading element from a leader of the first threading element in response to rotation of the handle in the closing direction, so that the gasket is pressed against and displaced relative to the inner wall of the opening formation member to attach the cap into the opening formation member, wherein the second threading element of the screw mechanism has a stopper that comes into contact with the leader of the first threading element and is configured to restrict further rotation of the closer in the closing direction after the gasket is pressed in an axial direction by at least a predetermined displacement, the screw mechanism sets a moving distance of the cap in the axial direction to be not less than 2 mm, while the second threading element engages with the leader of the first threading element and is then screwed into the first threading element to a filly closed position where the stopper comes into contact with the leader of the first threading element, and the gasket has a reactive force of not greater than 160 N from the sealing face of the opening formation member and a sealing face pressure of not less than 0.3 MPa against the sealing face when the moving distance of the cap at the fully closed position is 3.0 mm. 2. The cap device in accordance with claim 1, wherein the gasket has a reactive force of not greater than 130 N and a sealing face pressure of not less than 0.5 MPa when the moving distance of the cap is 3.0 mm. 3. The cap device in accordance with claim 1, wherein the first threading element is a female threading element, the second threading element is a male threading element, and the stopper is a projection formed in a thread groove of the male threading element. 4. The cap device in accordance with claim 1, wherein the closer has a ring-shaped seal support element that is protruded from the outer circumference of the closer to hold the gasket, and the projection of the stopper is a wall that crosses the thread groove formed between the seal support element and a thread ridge. 5. The cap device in accordance with claim 1, wherein the projection of the stopper is a wall that crosses the thread groove of the male threading element. 6. A cap device, comprising: a pipe-shaped opening formation member having a tank opening and a flow path connecting the tank opening to a tank; a cap having a closer that closes the tank opening and a handle that is mounted on the closer to rotate the closer in either of a closing direction and an opening direction; a gasket that is located between an outer circumference of the closer and a sealing face of the opening formation member; and a screw mechanism having a first threading element that is formed on an inner wall of the opening formation member and a second threading element that is formed on the outer circumference of the closer to engage with the first threading element, where the second threading element is screwed into the first threading element from a leader of the first threading element in response to rotation of the handle in the closing direction, so that the gasket is pressed against and displaced relative to the inner wall of the opening formation member to attach the cap into the opening formation member, wherein the second threading element of the screw mechanism has a stopper that comes into contact with the leader of the first threading element and is configured to restrict further rotation of the closer in the closing direction after the gasket is pressed in an axial direction by at least a predetermined displacement, the gasket includes a gasket main body having a first lip that is pressed against the sealing face, a second lip, and a linkage element that links the first lip to the second lip, where the first lip, the second lip, and the linkage element form a C-shaped cross section of the gasket main body, and a baffle element that is formed on an outer circumference of the gasket main body and is located between the second lip and the linkage element, the seal support member includes (i) a first sealing wall that supports the second lip, (ii) a second sealing wall that is extended from the first sealing wall in the closing direction of the closer and is coupled with the first sealing wall to define a recess, and (iii) a stopper element that positions the baffle element, the second sealing wall of the seal support member faces the linkage element of the gasket across a gap, and the linkage element narrows the gap when the first lip of the gasket main body receives a compressive force from the sealing face, and the first lip is longer than the second lip to bring the edge of the first lip into contact with a first sealing wall when the gasket is compressed by the sealing face. 7. The cap device in accordance with claim 6, wherein the second sealing wall has a circular sealing recess to receive a gate end, the gate end being protruded from the outer circumference of the linkage element. 8. A cap device, comprising: a pipe-shaped opening formation member having a tank opening and a flow path connecting the tank opening to a tank; a cap having a closer that closes the tank opening and a handle that is mounted on the closer to rotate the closer in either of a closing direction and an opening direction; a gasket that is located between an outer circumference of the closer and a sealing face of the opening formation member; and a screw mechanism having a first threading element that is formed on an inner wall of the opening formation member and a second threading element that is formed on the outer circumference of the closer to engage with the first threading element, where the second threading element is screwed into the first threading element from a leader of the first threading element in response to rotation of the handle in the closing direction, so that the gasket is pressed against and displaced relative to the inner wall of the opening formation member to attach the cap into the opening formation member, wherein the closer has a ring-shaped seal support element that is protruded from the outer circumference of the closer to hold the gasket, the first threading element is a female threading element, and the second threading element is a male threading element, and has a stopper that comes into contact with the leader of the first threading element, the stopper being configured to restrict further rotation of the closer in the closing direction after the gasket is pressed in an axial direction by at least a predetermined displacement, wherein the stopper has multiple deformable projections that cross a groove formed between the seal support element and a thread ridge of the second threading element, wherein the multiple deformable projections form ridges at a site coming into contact with the leader of the first threading element, and are configured to be deformed to fill grooves between the ridges of the deformable projections and then to follow the leader when pressed by the leader of the first threading element.
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