Ball screw and nut drive device
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United States of America Patent
Stats
-
Nov 9, 1982
Grant Date -
N/A
app pub date -
Apr 3, 1980
filing date -
Apr 11, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a ball screw and nut drive device, a helical ball spindle or channel is formed in the inner surface of a nut body and the outer surface of a screw. Balls are circulated through the helical ball channel being returned from one end to the other of the channel by deflecting channels and a return channel. Each deflecting channel is formed in part by a deflecting member fitted into a recess formed in the inner surface of the nut body. The deflecting member includes a projection for lifting balls out of the helical ball channel into the deflecting channel. The deflecting channel has a rectilinear part which can receive balls from the helical ball channel and a curved part connecting the rectilinear part with the return channel. The deflecting channel in the deflecting member is open along its length and the balls passing therethrough contact a wall in the recess formed in the nut body.
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