Sewing arm mechanism of embroidery machine
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United States of America Patent
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-
Dec 7, 2010
Grant Date -
Jul 17, 2008
app pub date -
Sep 20, 2007
filing date -
Jan 17, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a sewing arm mechanism of an embroidery machine. Within the sewing arm mechanism, there are provided a needle bar vertical drive unit and cloth pressing member vertical drive unit for vertically moving a needle bar and a cloth pressing member, respectively, by using the rotational driving force of an upper shaft. The sewing arm mechanism is configured in such a manner that the needle bar drive reaction force exerted on the upper shaft by the driving the needle bar vertical drive unit, and the cloth pressing member drive reaction force exerted on the upper shaft by the driving of the cloth pressing member vertical drive unit act in opposite directions of each other, whereby the magnitudes of the reaction forces exerted on the upper shaft can be cancelled with each other.
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