| 摘要 |
PURPOSE: A presser foot height control apparatus of a sewing machine is provided to minutely control the height of the presser foot. CONSTITUTION: A presser foot height control apparatus of a sewing machine comprise a pressing lever(16), a fixing lever(15), a control unit(17), a presser foot elevation driving motor(18), a presser foot rack(12). The fixing level is connected to the pressing lever and has a sensing unit for sensing the position of a part to be sensed. The control unit controls the presser foot elevation driving motor according the to the position signal of the part to be sensed.
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