| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential cloth feeding device of a sewing machine changing relative velocity between two cloth feed wheels by combining a differential regulation mechanism to a coaxial clutch member.SOLUTION: A differential cloth feeding device of a sewing machine comprises a lower cloth feeding mechanism 30, an inter-dependent mechanism 40, a differential regulation mechanism 60 and an upper cloth feeding mechanism 20. The lower cloth feeding mechanism 30 has a lower cloth feed rod 34 formed by a first cloth feed rod 32 and a second cloth feed rod 33 which is coaxial with the first cloth feed rod 32. A first clutch member 35 is inserted in the first cloth feed rod 32. A second clutch member 36 is inserted in the second cloth feed rod 33. The inter-dependent mechanism 40 has an interlock shaft 41 parallel to the lower cloth feed rod 34. The interlock shaft 41 is connected to the first clutch member 35 and the second clutch member 36 respectively. The differential regulation mechanism 60 is attached between the interlock shaft 41 and the first clutch member 35. |
