Driving unit and image forming apparatus using the same
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United States of America Patent
Stats
-
Jul 16, 2013
Grant Date -
May 3, 2012
app pub date -
Oct 24, 2011
filing date -
Oct 29, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A driving unit (1) includes holders (5) rotatably supporting a shaft (2) and rotatably holding first and second helical gears (3, 4). Each holder 5 includes first and second receiving portions (9, 10). The first receiving portions (9) receive forces in a direction to push the first helical gears (3) toward backs of accommodating portions (7) by contacting parts of the first helical gears (3) when the shaft (2) and the first helical gears (3) are rotated in a certain rotational direction. The second receiving portions (10) receive forces in a direction to push the first helical gears (3) from interiors of the accommodating portions (7) to openings (8) by contacting parts of the shaft (2) when the shaft (2) and the first helical gears (3) are rotated in an opposite direction. Thus, the driving unit is assembled easily and the helical gears are held stably in both rotational directions.
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Cited Art Landscape
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