| 摘要 |
PROBLEM TO BE SOLVED: To provide a hermetic rotary compressor capable of relaxing a force for relatively moving a drive shaft in an axial direction and suppressing increases in noise and vibration if acceleration and higher pressure are intended while including a flexible structure cylinder for suppressing local wear of the drive shaft.SOLUTION: A hermetic rotary compressor 100 comprises: an upper bearing 1 and a lower bearing 2 forming a compression mechanism 101. The hermetic rotary compressor 100 comprises: an upper flexible structure 110 provided in the upper bearing 1, and including an upper flexible structure groove 13 opening to an upper bearing receiving seat surface 1a, formed in parallel to an upper bearing inner circumferential surface 1c, and having a circular cross-section; a circular upper flexible structure cylinder 12 formed between the upper bearing inner circumferential surface 1c and the upper flexible structure groove 13; and an upper flexible structure stepped portion 11 formed by causing an upper flexible structure end portion 12a to be located above the upper bearing receiving seat surface 1a over an entire periphery; and a lower flexible structure 120 similarly provided in the lower bearing 2, and including a lower flexible structure groove 23; a lower flexible structure cylinder 22; and a lower flexible structure stepped portion 21. |
