| 摘要 |
<p>[Problem] With regard to lifting or lowering of a presser-foot by way of either a manual operation lever or a knee operation lifter, to simplify configuration of the lifting and lowering mechanism so as to reduce the number of components and facilitate manufacture thereof. [Solution] The present invention is provided with a presser bar lifting and lowering mechanism (30) which has: a lifter operating plate which is disposed upon a pedestal (2a) which supports an arm (2) upon a bed (3) and which is vertically movable in accordance with a vertical movement operation of a manual operation lever (31); a pivot rod in which one end is joined to the lifter operating plate via a first joining link; and a cloth-presser bar lifting and lowering plate which is joined to a second joining link which is joined to the other end of the pivot rod, and which is joined to the cloth-presser bar via a presser bar guide bracket which is fixed to the cloth-presser bar. The present invention is provided with a knee lifter mechanism (50) which is disposed upon a lower-right end portion of the bed (3a), which is equipped with a knee operation lifter (51), and which has a knee lifter drive arm which rotates by way of swinging movement of the knee operation lifter, wherein the knee lifter drive arm is joined to the lifter operating plate.</p> |
