| 摘要 |
<p>Electromechanical actuator applied to an electronically controlled sewing machine comprising a bed, a standard on the bed, an arm overhanging the bed, a head, a vertical pin fixed to the head, a needle bar gate transversely oscillatible around the vertical pin, a ferromagnetic frame formed by four walls each one opposite to another, a magnetic pole having the shape of a part of a circle ring connecting two of the opposite walls of the frame, and a conducting wire coil being slidably arranged on the magnetic pole to make circular oscillating paths when energized.</p> |
