A wire outlet nozzle arrangement includes one or multiple wire outlet nozzles situated parallel to one another, each or all of which guides or guide a winding wire in a wire feed direction. The wire outlet nozzle or nozzles includes or include an outlet opening, through which the winding wire guided in the wire outlet nozzle exits the respective wire outlet nozzle. The wire outlet nozzle or nozzles is or are mounted so as to rotate about a rotation axis parallel to the wire feed direction.

A winding device includes a nozzle holding mechanism for holding a plurality of nozzles in substantially parallel with each other, a nozzle rotation driving mechanism for rotating the nozzle holding mechanism about a rotation axis being substantially parallel with the plurality of nozzles, a spool supporting mechanism for supporting a plurality of spools in substantially parallel with each other, a spool rotation driving mechanism for rotating the spool supporting mechanism about a rotation axis being substantially parallel with the plurality of spools and being coaxially with or substantially parallel with the rotation axis of the nozzle holding mechanism, and a control unit for controlling the spool rotation driving mechanism in such a manner as to rotate the spool supporting mechanism in synchronism with rotation of the nozzle holding mechanism.

A winding device includes a nozzle holding mechanism for holding a plurality of nozzles in substantially parallel with each other, a nozzle rotation driving mechanism for rotating the nozzle holding mechanism about a rotation axis being substantially parallel with the plurality of nozzles, a spool supporting mechanism for supporting a plurality of spools in substantially parallel with each other, a spool rotation driving mechanism for rotating the spool supporting mechanism about a rotation axis being substantially parallel with the plurality of spools and being coaxially with or substantially parallel with the rotation axis of the nozzle holding mechanism, and a control unit for controlling the spool rotation driving mechanism in such a manner as to rotate the spool supporting mechanism in synchronism with rotation of the nozzle holding mechanism.

Disclosed are: a winding apparatus having a cut surface formed on a side surface of a rotation jig so as to prevent metal wire from being unnecessarily rotated at the time of winding the metal wire; and an antenna coil having a loop shape including at least one straight line section. The disclosed antenna coil includes: a loop wound multiple times around a winding axis on a same plane; a first end part disposed in an inner circumferential area of the loop; and a second end part disposed in an outer circumferential area of the loop, wherein the loop includes one or more straight line sections.

Disclosed are: a winding apparatus having a cut surface formed on a side surface of a rotation jig so as to prevent metal wire from being unnecessarily rotated at the time of winding the metal wire; and an antenna coil having a loop shape including at least one straight line section. The disclosed antenna coil includes: a loop wound multiple times around a winding axis on a same plane; a first end part disposed in an inner circumferential area of the loop; and a second end part disposed in an outer circumferential area of the loop, wherein the loop includes one or more straight line sections.

A coil unit may include an even number of coils comprising a first coil and a second coil; and a coil holding member which holds the even number of the coils. An outer peripheral face of the coil holding member may include a side-face pair comprising a first side face and a second side face which are substantially parallel to each other. The first side face may be formed with a first protruded part around which the first coil is wound, the first protruded part being protruded to an outer peripheral side with respect to the coil holding member. The second side face may be formed with a second protruded part around which the second coil is wound, the second protruded part being protruded to an outer peripheral side with respect to the coil holding member. The first coil and the second coil may be structured from one conducting wire.

A coil unit may include an even number of coils comprising a first coil and a second coil; and a coil holding member which holds the even number of the coils. An outer peripheral face of the coil holding member may include a side-face pair comprising a first side face and a second side face which are substantially parallel to each other. The first side face may be formed with a first protruded part around which the first coil is wound, the first protruded part being protruded to an outer peripheral side with respect to the coil holding member. The second side face may be formed with a second protruded part around which the second coil is wound, the second protruded part being protruded to an outer peripheral side with respect to the coil holding member. The first coil and the second coil may be structured from one conducting wire.

A coil unit may include coil holding member configured to hold a coil; and a coil held by the coil holding member and formed by a conducting wire in a wound state. A direction perpendicular to a length direction of the conducting wire is a thickness direction of the coil. The coil holding member may include an abutment surface configured to abut against one end surface in the thickness direction of the coil, a convex unit protruding from the abutment surface and around which the conducting wire is wound, and a coil pressing unit extending from a front end surface of the convex unit and configured to press the other end surface in the thickness direction of the coil.

A coil unit may include coil holding member configured to hold a coil; and a coil held by the coil holding member and formed by a conducting wire in a wound state. A direction perpendicular to a length direction of the conducting wire is a thickness direction of the coil. The coil holding member may include an abutment surface configured to abut against one end surface in the thickness direction of the coil, a convex unit protruding from the abutment surface and around which the conducting wire is wound, and a coil pressing unit extending from a front end surface of the convex unit and configured to press the other end surface in the thickness direction of the coil.

An automatic toroidal core winding machine, including: a frame, control device, clamping and wire arranging mechanism, winding mechanism, wire delivering mechanism, feeding mechanism, automatic stripping mechanism and wire reclaiming device for reclaiming excessive wires around the shuttle, the winding mechanism including a shuttle and driving device for supporting and driving the shuttle to rotate, the shuttle includes a slider and wire storage and hooking aperture, and the frame includes a detecting and positioning mechanism used for positioning the ring opening, the slider and the wire storage and hooking aperture of the shuttle, and a wire hanging device for hanging the wire allowing the shuttle to store and wind the wire. The machine achieves automation from wire delivery, feeding, shuttle opening to wire hanging, wire winding, wire cutting, product taking and wire reclaiming with significantly improved production efficiency, reduced restriction and effect on the quality of winding from manual proficiency.