MOTOR DIRECT-DRIVE TRANSMISSION MECHANISM FOR SEWING MACHINE

摘要

The transmission mechanism for a sewing machine having a base (81) and an upper arm (82) includes an upper axle structure (10), a motor (20), a lower axle structure (30), a shuttle structure (40), a transmission element (50) and a gear set (60). The upper axle structure (10) is longitudinally disposed in the upper arm (82). The motor (20) is fixed on one side of the base (81) and having a driving spindle (21). The lower axle structure (30) is disposed in the base (81) and has a lower axle (31) connected to and synchronized with the driving spindle (21). The shuttle structure (40) is disposed in the base (81) and beside the lower axle (31) and has a shuttle axle (41). The transmission element (50) is connected between the upper axle structure (10) and the lower axle structure (30). The gear set (60) is engaged between the shuttle axle (41) and the lower axle (31).