Crankshaft, method of assembling the crankshaft, rotary compressor and refrigeration-cycle device
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United States of America Patent
Stats
-
Nov 8, 2022
Grant Date -
Apr 30, 2020
app pub date -
Dec 30, 2019
filing date -
May 31, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to one embodiment, a crank portion is formed from a crank piece, an element separate from a shaft portion. The crank piece includes a fitting hole in which the shaft portion is fit by predetermined “interference” and a slit-like slot with one end opened in an inner circumferential surface of the fitting hole, and an other end closed inside the crank piece. The fitting hole is deformed so as to expand its diameter when expanding a width of the slot. The shaft portion is fit in the fitting hole of the crank piece by the predetermined “interference” when inserted in the deformed fitting hole and the fitting hole restores an original form while the shaft portion is in the fitting hole.
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