Abstract: A tinsel wire is provided, which has a high mechanical strength as an electric power supplying conductor wire, hardly breaks with respect to a vibration of the diaphragm, has small dynamic resistance even in a vibrating atmosphere, has excellent flexing characteristics, thereby improving quality and reliability as a product, enables a thin designing of a product, and increases the freedom of the designing. The tinsel wire includes an assembled wire which includes a plurality of element wires each including core threads and a metal foil wound up around the core threads, the plurality of the element wires twisted, bundled or woven together constituting the assembled wire, wherein a cross section of the tinsel wire has a shape of a polygon selected from the group consisting of a quadrilateral, pentagon, hexagon and octagon.

Abstract: The present invention is to provide a speaker voice coil having an improved productivity, a lightweight, a good response to vibration, and an elimination of a specified frequency. The speaker voice coil includes a plurality of coil main bodies connected in series each other, the coil main bodies each have a lead-in wire portion and a lead-out wire portion at a periphery of an end of the respective coil main bodies, the lead-in wire portion of one coil main body continuously communicating with the lead-out wire portion of the adjacent coil main body.

Abstract: A tinsel wire is provided, which has a high mechanical strength as an electric power supplying conductor wire, hardly breaks with respect to a vibration of the diaphragm, has small dynamic resistance even in a vibrating atmosphere, has excellent flexing characteristics, thereby improving quality and reliability as a product, enables a thin designing of a product, and increases the freedom of the designing. The tinsel wire includes an assembled wire which includes a plurality of element wires each including core threads and a metal foil wound up around the core threads, the plurality of the element wires twisted, bundled or woven together constituting the assembled wire, wherein a cross section of the tinsel wire has a shape of a polygon selected from the group consisting of a quadrilateral, pentagon, hexagon and octagon.

Abstract: An alpha-turn coil includes: a plurality of coil main bodies made by winding a wire rod having a desired diameter; and lead wire having a start part and a stop part formed integrally with outer peripheries of the coil main bodies, and connecting the coil main bodies to each other. The stop part of the lead wire of a forward coil main body is extended to the start part of the lead wire of a backward coil main body, and the lead wire is extended to compose the coil main body.

Abstract: A process for treating a coil end is provided, by which upon automatic winding of the coil, an electric connection between a portion of a wire at the front or rear end of the coil and a terminal of a winding object by arc welding can be securely carried out. A stripping section strips an insulating coating off from the portions of the wire at the front and rear ends of the coil while the wire is wound around the winding object with the portions of the wire being bound to the terminal. Each portion of the wire, the insulating coating of which is stripped off, bound to the terminal is electrically connected to the terminal by arc welding.

Abstract: An electric wire 1 is moved in a moving direction at a desired speed. An insulating layer of varnish is formed on the outer surface of the electric wire 1 by a device for applying the varnish. The device includes a rough-like container 2 and dropping means 8. The rough-like container 2 is located below the electric wire 1 in the moving direction. The dropping means 8 is located for the electric wire above the container. A desired quantity of varnish is dropped from the dropping means 8 toward the outer surface of the electric wire 1 through a flow rate adjusting portion. The flow rate of the varnish is adjusted by the flow rate adjusting portion 9.

Abstract: The apparatus is provided with a wire guiding means disposed in a liquid bath for turning the direction of a wire to feed the wire into and out of the bath contained by the liquid. The wire guiding means includes a tubular conduit having a first open end disposed in the liquid, a second open end disposed above the liquid, and a middle curved portion for guiding the wire through the tubular conduit. The tubular conduit can be at least partially filled with the liquid. Preferably, the treatment liquid is an electrodeposition liquid. A plurality of the tubular conduits may be disposed in the bath substantially parallel with each other. Preferably the first open end is connected to a bottom portion of the bath through a coupling such that the treatment liquid in the bath can flows into the tubular conduit. The second open end is positioned higher than the first open end.

Abstract: A split die includes a plurality of die pieces which can be assembled into a die nib. The die nib defines a central wire forming passage which has a cross section of a substantially rectangular shape or a square. The cross section of the wire forming passage is progressively smaller such that the wire forming passage has a predetermined approach angle. Each of the die pieces has a passage segment of a generally triangular shape to partially define the wire forming passage. The die piece has a pair of side lines each passing a point on an axial center line of the wire forming passage.

Abstract: In a protective structure for a terminal lead wire of a coil, there is provided an insulating member 15 at a point A of intersection between a terminal lead wire 9 at a winding end of the coil and a coil end part 7 including a terminal lead wire 5 at a winding start of the coil, so that the terminal lead wire 9 at the winding end of the coil may not get directly in contact with the coil end part 7 at the winding start. This insulating member 15 is applied to an entire area of the coil end part corresponding to the point A of intersection.