Speed reduction gear of electric power steering device
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United States of America Patent
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N/A
Issued Date -
Jul 20, 2006
app pub date -
Sep 30, 2004
filing date -
Oct 1, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An electric power steering device having a speed reduction gear using a toothed belt and capable of preventing the speed reduction gear from being locked and steering from being disabled even if the toothed belt is broken. A clearance .DELTA. between the inner surface (21x) of the second housing (21b) of the speed reduction gear (40) and the rear surface (29a) of the toothed belt (29) applied to a toothed pulley (27) is formed larger than the tooth depth (H) of the toothed belt (29) (.DELTA.>II). Thus, even if the toothed belt (29) is broken, the toothed belt (29) is not caught between the inner surface (21x) of the second housing (21b) and the outer peripheral surface (27a) of the second toothed pulley (27), and the toothed pulley (29) is not locked.
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