| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable and highly efficient hermetic compressor capable of stably supplying lubricant by directly dropping the lubricant to a sliding part such as a piston. SOLUTION: An oil supply passage 137 is disposed in a shaft 113, a communication hole 145 communicates with the oil supply passage 137 and opens to the sliding part with a sub bearing 125 from an axis of a sub shaft part 119 is provided, and an oil groove is provided on an outer peripheral part of the sub shaft part 119 to which the communication hole 145 is opened, a part of an oil passage 151 guiding the lubricant to the sliding part such as the piston 129 is formed in an inside of the sub bearing 125, and the supply oil passage 137 and the oil passage 151 are connected to communicate with each other during rotation of the shaft 113, and thereby, the lubricant 111 introduced into the oil passage 151 from the communication hole 145 through the oil supply passage 137 is directly dropped to the sliding part such as the piston 129, and the lubricant 111 can be stably and surely supplied even when the revolutions of the shaft 113 or viscosity of the lubricant 111 is varied. COPYRIGHT: (C)2009,JPO&INPIT
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