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2. 发明公开

EP0032485A1 Zigzag mechanism 有权
标题翻译：锯齿Mechanismus。
公开(公告)号：EP0032485A1
公开(公告)日：1981-07-22
申请号：EP81850007.6
申请日：1981-01-14
申请人： Husqvarna Aktiebolag
发明人： Gustafsson, Lars-Erik
IPC分类号： D05B3/02
CPC分类号： D05B19/14
摘要： A frame (10) of a needle bar mechanism is mounted in a sewing machine arm and supports the swingable needle bar holder (13) by which the zigzag motion of the needle is enabled. A stepping motor (24) is mounted in the frame and connected by means of a link (26) from the shaft of the motor to the needle bar holder. The motor is controlled by stich codes supplied by amplification circuits and automatic control devices. Owing to the design of the link, the driving arrangement can be provided with calibration and an elastic engagement between the motor shaft and the needle bar holder. The transfer distance through only one link is short so the friction loss is small which in combination with a small keeping torque of the needle bar will restrict the dimension of the stepping motor.
摘要翻译：针杆机构的框架（10）安装在缝纫机臂中并支撑可摆动的针杆保持器（13），通过该支架可以使针的之字形运动成为可能。步进马达（24）安装在框架中，并通过连杆（26）从马达的轴连接到针杆座上。电机由放大电路和自动控制装置提供的电极代码控制。由于连杆的设计，可以提供驱动装置的校准和电动机轴与针杆架之间的弹性接合。仅通过一个连杆的传送距离较短，因此摩擦损失小，与针杆的小保持力矩相结合将限制步进电机的尺寸。

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