| 摘要 |
PURPOSE: A locking device of a radiator cap is provided to prevent burn of an operator by locking the radiator cap in spite of opening the radiator cap by the operator in increasing temperature of coolant in the radiator to be over the reference temperature. CONSTITUTION: A locking device of a radiator cap(30) is composed of a locking hole(33) extended to a bracket(32) at a side of the radiator cap and placed near the upper part of an upper tank(21) of a radiator(20); a key installation hole(42) formed in the upper part of the upper tank of the radiator corresponding to the locking hole; a locking key installed in the key installation hole and vertically formed; bimetal(50) moving the locking key up according to internal temperature of the radiator; and a return spring(47) returning the locking key in case of internal temperature of the radiator to be less than operation temperature of the bimetal. Sealing is installed between the outer periphery of the locking key and the inner periphery of the key installation hole.
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