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    • 6. 发明申请
    • SEWING MACHINE
    • 缝纫机
    • US20140261125A1
    • 2014-09-18
    • US14211753
    • 2014-03-14
    • Windham Sewing Machines LLC
    • Anthony Luberto
    • D05B15/00D05B69/04D05B29/04D05B55/14
    • D05B69/04D05B55/14
    • A needle drive assembly for a sewing machine includes a drive shaft rotatable about a drive shaft axis and a needle drive cam operably connected to the drive shaft and rotatable therewith. A needle drive race is slidably connected to the needle drive cam via a cam pin secured to the needle drive cam and at least partially extending through the needle drive race. A needle is assembly affixed to the needle drive race and includes a needle bar and a needle secured to the needle bar. Rotary motion of the drive shaft and needle drive cam about the drive shaft axis is translated into a needle path via the needle drive race, the needle path including a substantially vertical downstroke from a stroke peak to a stroke depth, a horizontal carry portion from the stroke depth and a curvilinear or linear upstroke from the horizontal carry portion to peak.
    • 用于缝纫机的针驱动组件包括可围绕驱动轴轴线旋转的驱动轴和可操作地连接到驱动轴并与其一起旋转的针驱动凸轮。 针驱动器圈通过固定到针驱动凸轮的凸轮销可滑动地连接到针驱动凸轮,并且至少部分延伸穿过针驱动器座圈。 针是组装固定到针驱动座圈上,并且包括针杆和固定到针杆的针。 驱动轴和针驱动凸轮围绕驱动轴轴线的旋转运动通过针驱动座转换成针通路,针路径包括从行程峰值到行程深度的基本上垂直的下行程,来自 行程深度和从水平承载部分到峰值的曲线或线性上行程。