| 摘要 |
A roll over valve structure is provided to suppress discharge of the air and an evaporated gas to the ambient air and prevent a spit back phenomenon that fuel flows back through a filler neck. A roll over valve structure includes a fuel pump(6). The fuel pump is installed in a fuel tank(1) to pump fuel into an engine. An roll over valve(10) is formed on the fuel tank to supply an evaporated gas to a canister. The roll over valve includes a housing(11) coupled to an upper part of the fuel tank. A valve body(13) is formed in the housing to pass the evaporated gas therethrough. A nipple(15) is formed at an upper part of the housing to be coupled to a tube connected to the canister. A division(16) projects outward from an outer periphery of the valve body to primarily block the fuel overflowed from the fuel tank. A slope(18) is formed at a bottom of the housing to collect the fuel discharged to a return hole(17).
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