Abstract: A needle selector for a knitting machine which selects a working needle by using a piezoelectric body having piezoelectric element is provided, in which an intermediate position between a rear end portion and front end portion of the piezoelectric body movably supported by a housing is rotatably held by the housing by using a rotary member to stabilize vibration of the piezoelectric body, a sectional structure of the rotary member 3 on a plane which is perpendicular to an axis of the rotary member 3 and perpendicular to a plane of the piezoelectric body is formed such that a bend in a widthwise direction of the piezoelectric body 2 is suppressed to be smaller than a bend in the longitudinal direction, so that a vibration speed and torque of the piezoelectric body further increase and energy saving is achieved.

Abstract: A needle selector for a knitting machine which selects a working needle by using a piezoelectric body having piezoelectric element is provided, in which an intermediate position between a rear end portion and front end portion of the piezoelectric body movably supported by a housing is rotatably held by the housing by using a rotary member to stabilize vibration of the piezoelectric body, a sectional structure of the rotary member 3 on a plane which is perpendicular to an axis of the rotary member 3 and perpendicular to a plane of the piezoelectric body is formed such that a bend in a widthwise direction of the piezoelectric body 2 is suppressed to be smaller than a bend in the longitudinal direction, so that a vibration speed and torque of the piezoelectric body further increase and energy saving is achieved.

Abstract: A needle selection module finger (30) is comprised of a finger member (31) and a finger holding member (40). The finger member (31) has a butt abutting portion (33) and a support (34). The support (34) has projections (35, 36) at its lower part. The finger holding member (40) has, from its one end toward the other end, a connecting portion (41) having concave parts (42, 42a) for accommodating the projections (35, 36) at the lower part of the support (34), a finger pivot support (43), and a piezoelectric body engaging portion (45). The finger member (31) and finger holding member (40) are positioned by inserting the projections (35, 36) of the finger member (31) in the concave parts (42, 42a) of the finger holding member (40), and are integrally connected to each other by inserting a pin 50 in holes (37, 37a) formed in the projection (35) and a connecting portion (41).

Abstract: A needle selection module finger (30) is comprised of a finger member (31) and a finger holding member (40). The finger member (31) has a butt abutting portion (33) and a support (34). The support (34) has projections (35, 36) at its lower part. The finger holding member (40) has, from its one end toward the other end, a connecting portion (41) having concave parts (42, 42a) for accommodating the projections (35, 36) at the lower part of the support (34), a finger pivot support (43), and a piezoelectric body engaging portion (45). The finger member (31) and finger holding member (40) are positioned by inserting the projections (35, 36) of the finger member (31) in the concave parts (42, 42a) of the finger holding member (40), and are integrally connected to each other by inserting a pin 50 in holes (37, 37a) formed in the projection (35) and a connecting portion (41).

Abstract: A needle selector for knitting machines is provided, which includes a finger actuating device, a power supply means for feeding electric power to the finger actuating device, and power supply terminals for supplying power to the power supply means, wherein said finger actuating device fast and steadily operates piezoelectric bodies 7 including piezoelectric elements by bending them while supporting the piezoelectric bodies 7 at the tip, rear end and a prescribed position between the tip and the rear end, and using a power supply means including of bar-shaped electrodes 28 each including at least two conductive parts with an insulating part in-between, resulting in a substantial reduction in size.