초록 ▼

The float valve of the invention comprises: a case 11, float 15, valve 16 capable of closing a efflux channel 18 of air A, and ball 17 for supporting a motion of closing the float 15. A through-hole 13a for communicating air provided on the side wall 13 of the case is open at a position, the level o

The float valve of the invention comprises: a case 11, float 15, valve 16 capable of closing a efflux channel 18 of air A, and ball 17 for supporting a motion of closing the float 15. A through-hole 13a for communicating air provided on the side wall 13 of the case is open at a position, the level of which is the same as that of a fuel level LF in the fuel tank in the case of appropriately filling up the fuel tank with fuel. A float body 15a of the float 15 is disposed on a plate portion 12a on the bottom wall 12 of the case at a position higher than a through-hole 13a on the side wall 13 of the case. Thereby, air can be positively discharged from the fuel tank until the fuel level reaches a position at which the fuel tank is filled up with fuel in the case of refueling, so that fuel can be smoothly fed into the fuel tank.

대표청구항 ▼

A float valve for a fuel tank constructed and arranged to allow air in a fuel tank to be vented during refueling, said float valve comprising: a case disposed at an upper portion of a fuel tank about an opening into an air efflux channel, said case including at least a bottom wall and a side wall ex

A float valve for a fuel tank constructed and arranged to allow air in a fuel tank to be vented during refueling, said float valve comprising: a case disposed at an upper portion of a fuel tank about an opening into an air efflux channel, said case including at least a bottom wall and a side wall extending upwardly from a peripheral edge of said bottom wall and connected to said fuel tank, an air hole being formed in said side wall; a float member accommodated in said case, said float member including a float body, defining a sealed chamber, that generates buoyancy, said chamber being disposed at a position entirely above a center of said air hole, said float member including a skirt extending downwardly from said float body to a position lower than said air hole; a valve element disposed at an upper portion of said float, and being capable of closing said air efflux channel; and an auxiliary member disposed between said bottom wall and said float so as to assist in a valve-closing movement of said float, wherein said air hole is located at a position generally equal to where the fuel level exists for a full fuel tank.