Fuel tank device for vehicle having float valve and diaphragm valve
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-025/08
F16K-017/36
출원번호
US-0545933
(1995-10-20)
우선권정보
JP-0293831 (1994-11-01); JP-0293832 (1994-11-01)
발명자
/ 주소
Nagino Yoshihiro (Inazawa JPX)
출원인 / 주소
Toyoda Gosei Co., Ltd. (Aichi-ken JPX 03)
인용정보
피인용 횟수 :
13인용 특허 :
17
초록▼
A fuel tank device for a vehicle having a fuel tank, the device including a float valve mounted within the fuel tank, and a diaphragm valve connected to an air outflow passage of the float valve. The float valve includes a casing, and a float received in a float chamber in the casing for vertical mo
A fuel tank device for a vehicle having a fuel tank, the device including a float valve mounted within the fuel tank, and a diaphragm valve connected to an air outflow passage of the float valve. The float valve includes a casing, and a float received in a float chamber in the casing for vertical movement for opening and closing the air outflow passage in a top wall of the casing in accordance with a change of a fuel liquid level in the fuel tank. The casing includes a removable bottom portion having a through hole. The diaphragm valve includes (a) a reference pressure chamber, (b) a fluid pressure chamber in communication with the air outflow chamber, (c) a fluid outflow passage provided at the fluid pressure chamber, (d) a fluid discharge chamber in communication with the fluid outflow passage, (e) an annular outer extension chamber connected to an outer periphery of the fluid discharge chamber, the outer extension chamber being greater in height than the flat fluid discharge chamber, (f) a fluid discharge passage connected to the outer extension chamber, and having an inner diameter generally equal to the height of the outer extension chamber, (g) a diaphragm separating the reference pressure chamber from the fluid pressure chamber, the diaphragm receiving a pressure of a fluid within the fluid pressure chamber for communicating the fluid pressure chamber with the fluid outflow passage, and (h) structure for urging the diaphragm into a position to interrupt the communication between the fluid pressure chamber and the fluid outflow passage.
대표청구항▼
A fuel tank device for a vehicle having a fuel tank, said device comprising: a float valve constructed and arranged to be mounted within the fuel tank at an upper portion of the fuel tank; and a diaphragm valve connected to an air outflow passage of said float valve, said float valve comprising (i)
A fuel tank device for a vehicle having a fuel tank, said device comprising: a float valve constructed and arranged to be mounted within the fuel tank at an upper portion of the fuel tank; and a diaphragm valve connected to an air outflow passage of said float valve, said float valve comprising (i) a casing defining a float chamber therein, said casing including a top wall with said air outflow passage disposed therethrough, a side wall extending downwardly from said top wall, and a bottom portion removably mounted on a lower end portion of said side wall, said bottom portion having a through hole, and (ii) a float received in said float chamber for vertical movement therein, said float having a valve portion for opening and closing said air outflow passage in accordance with a change of a fuel liquid level within the fuel tank, said diaphragm valve including (a) a reference pressure chamber constructed and arranged to be maintained at a predetermined pressure, (b) a fluid pressure chamber in communication with said air outflow chamber, (c) a fluid outflow passage provided at a generally central portion of said fluid pressure chamber, (d) a fluid discharge chamber in communication with said fluid outflow passage, (e) an annular outer extension chamber connected to an outer periphery of said fluid discharge chamber, said outer extension chamber having a height greater than a height of said fluid discharge chamber, (f) a fluid discharge passage connected to said outer extension chamber, said fluid discharge passage having an inner diameter generally equal to the height of said outer extension chamber, (g) a diaphragm separating said reference pressure chamber from said fluid pressure chamber, said diaphragm receiving a pressure of a fluid within said fluid pressure chamber for communicating said fluid pressure chamber with said fluid outflow passage, and (h) urging means for urging said diaphragm into a position to interrupt the communication between said fluid pressure chamber and said fluid outflow passage, wherein said bottom portion of said float valve includes an upstanding wall fitted in said side wall, and said through hole is formed through said upstanding wall, said through hole having a rectangular shape.
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