Patent ID: 7841283
Filing Date: 2010-11-30
Classification: D05B

Abstract:
1. A sewing machine, comprising: a thread take-up; a needle bar to which a sewing needle is attached; a check spring provided in a threading route of a needle thread and engaging with the needle thread directed toward the thread take-up; a needle threading mechanism that has a needle threading hook for threading an eye of the sewing needle; a needle threading mechanism drive unit that drives the needle threading mechanism; a sewing machine motor that drives the thread take-up and the needle bar; a control unit that controls the sewing machine motor; and the control unit controls the sewing machine motor to lower the thread take-up only by a predetermined distance so that a spring force of the check spring is not operated on the needle thread when threading the eye of the sewing needle by driving the needle threading mechanism by the needle threading mechanism drive unit.