Title:
NEEDLE BAR DRIVING DEVICE OF SEWING MACHINE
Document Type and Number:
WIPO Patent Application WO/2005/040479
Kind Code:
A1
Abstract:
A needle bar driving device of a sewing machine, comprising a dedicated drive source (16) for liftably driving the needle bar (3) of the sewing machine. A control part (160) controls the operation of the drive source so that the needle bar can be lifted within a specified stroke range when sewing operation is performed and that the needle bar can be moved to a specified waiting position set on the upper side of a top dead center within the specified stroke range when the sewing operation is not performed. The temporal pattern of the lifting motion of the needle bar within the stroke range can be changed. Thus, a space between the lower end of the needle bar and the upper surface of the sewing machine table at the time of suspension can be secured large while minimizing the stroke of the needle bar in sewing, and also the drive timing of the needle bar can be changed.
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Inventors:
Tajima, Ikuo c/o TOKAI KOGYO MISHIN KABUSHIKI KAISHA (1800 Ushiyamacho, Kasugai-sh, Aichi 01, 48609, JP)
Application Number:
PCT/JP2004/015915
Publication Date:
May 06, 2005
Filing Date:
October 27, 2004
Export Citation:
Assignee:
TOKAI KOGYO MISHIN KABUSHIKI KAISHA (1800, Ushiyamacho Kasugai-sh, Aichi 01, 48609, JP)
Tajima, Ikuo c/o TOKAI KOGYO MISHIN KABUSHIKI KAISHA (1800 Ushiyamacho, Kasugai-sh, Aichi 01, 48609, JP)
Tajima, Ikuo c/o TOKAI KOGYO MISHIN KABUSHIKI KAISHA (1800 Ushiyamacho, Kasugai-sh, Aichi 01, 48609, JP)
International Classes:
D05B55/14; D05C11/06; D05B55/00; D05C11/00; (IPC1-7): D05B55/14; D05C11/06
Attorney, Agent or Firm:
Iizuka, Yoshihito (Hongo-Ohara Building Fifth Floor, 24-6 Hongo 5-chome, Bunkyo-k, Tokyo 33, 11300, JP)
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