Thread-cutting driving device of sewing machine

Application Number: 00108155
Application Date: 2000.05.08
Publication Number: 1273297
Publication Date: 2000.11.15
Priority Information: 1999/5/7 JP 127174/99
International: D05B65/00
Applicant(s) Name: Juki Corp.
Inventor(s) Name: Kadowaki Shinjiro
Patent Agency Code: 72001
Patent Agent: zhang tianan
Abstract To reduce power consumption of an actuator applied as the drive source of a thread cutter drive and miniaturize the actuator. SOLUTION: In this thread cutter drive, an actuator 1 is driven to engage a roller 52 with the cam surface 62 of a cam 6, and required motion is applied to a moving scalpel 9 by the roller 52 moving along the cam surface 62 to cut a thread. The thread cutter drive also has a guide part 63 for guiding the cam 6 from the displacement starting position on the cam surface 62 to at least largest displacement position to be disposed at the opposite position and an inserting hole for inserting the roller 52 between the cam surface 62 and the guide part 63.