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    • 46. 发明授权
    • Stitch amplitude adjusting device for sewing machine
    • 缝纫机针迹振幅调节装置
    • US6065411A
    • 2000-05-23
    • US280568
    • 1999-03-30
    • Hidechika KuramotoYasuhiro Osanai
    • Hidechika KuramotoYasuhiro Osanai
    • D05B3/02
    • D05B3/02
    • An amplitude adjusting device in connection with a sewing machine having an amplitude generating mechanism including a pattern cam and a cam follower which has a central swinging axis around cam follower which is swingable in accordance with the configuration of the pattern cam, wherein the amplitude adjusting device comprises an adjusting lever having a central axis around which the adjusting lever is swingable, the adjusting lever having one end operatively connected to one end of a transmission rod which has the opposite end connected to a swingable needle bar holder. The adjusting lever has the opposite end operatively connected to an operating knob and is normally urged in one direction so that said one end of the transmission rod is normally urged to a position substantially corresponding to the swinging axis of the cam follower. The operating knob is rotated in one direction to swing the adjusting lever in the opposite direction against the urging action applied to the adjusting lever, thereby to move said one end of the transmission rod in the direction away from the position substantially corresponding to the swinging axis of the cam follower. The operating knob is axially pressed and rotated to activate a positioning member to hold the adjusting lever at an optional angular position thereof and accordingly hold said one end of the transmission rod at an optional position away from the swinging axis of the cam follower.
    • 一种与具有振幅发生机构的振幅调节装置,该振幅发生机构包括图案凸轮和凸轮从动件,所述振幅发生机构具有围绕凸轮从动件的中心摆动轴线,所述中心摆动轴线可根据图案凸轮的构型摆动,其中振幅调节装置 包括具有中心轴的调节杆,所述调节杆围绕所述调节杆摆动,所述调节杆的一端可操作地连接到传动杆的一端,所述传动杆的相对端连接到可摆动的针杆保持器。 调节杆具有可操作地连接到操作旋钮的相对端,并且通常沿一个方向被推动,使得传动杆的所述一端通常被推动到基本对应于凸轮从动件的摆动轴线的位置。 操作旋钮在一个方向上旋转以克服施加到调节杆的推动作用沿相反方向摆动调节杆,从而使传动杆的一端沿远离基本对应于摆动轴线的位置的方向移动 的凸轮从动件。 操作旋钮被轴向按压并旋转以启动定位构件以将调节杆保持在可选的角度位置,并且相应地将传动杆的所述一端保持在远离凸轮从动件的摆动轴线的可选位置。