JPS5863105A - Multiple solenoid coil - Google Patents

Abstract

PURPOSE:To make it easier to process lead wires both at start and end of winding, and also to provide stable characteristics to them, by a method wherein specified notches or cut-up projections are added to bobbin electrical film used in a flyback transformer for a TV cathode tube. CONSTITUTION:Notches or cut-up projections are added to the both side end portions ( on the outmost portion) of electrical film 9. By using these notches or projections, lead wires at start and end of winding are pulled out at a right angle respectively against the coil winding direction. Then, they are hooked on the projections to be held. As a result, no tape is required to hold them, the prime cost is lowered, processing thereof is made easier, and their characteristics is also made stable.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flyback transformer used for supplying anode voltage to a cathode ray tube of a TV receiver, etc., in which a predetermined notch is added to an insulating film and a cut-out is provided. By doing so, the lead wire processing at the start of winding and the winding end D
The purpose is to facilitate IJ-line processing and stabilize characteristics.

As shown in Figure 1, in the conventional flyback transformer, after the winding is completed, the worker fixes the lead wire to the insulating film by chipping the lead wire at the start of winding and the lead wire at the end of winding at the right angle processing point of the lead wire. Because of this,
It had the disadvantage of unstable characteristics and no improvement in productivity.

The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be explained below based on FIGS. 2 to 8. In FIGS. It is a bobbin in which several layers and a copper wire 8 are wound in one layer. The beginning of the winding of the insulating film 9 is fixed to the bobbin 6 or the lower insulating film by ultrasonic welding, and the end of the winding is fixed to the same insulating film by ultrasonic welding, forming a multilayer structure in the order of the insulating film, the coil, and the insulating film. It becomes. In the coil winding process, the copper wire 8 is wrapped around the terminal 7, hooked to the protrusion of the bobbin 6, and then hooked to the cutout of the insulating film. After the winding is completed, the wire is hooked into the cutout of the insulating film, hooked onto the protrusion of the bobbin, and wrapped around the terminal by the reverse operation described above.

In the above structure, as shown in FIGS. 2 and 4, in the process of winding the insulating film, cutouts as shown in FIGS. 6 to 8 are made at the side edges of the outermost film of the insulating film. The winding start lead wire and the winding end lead wire are pulled out in a direction perpendicular to the winding direction of the coil by using the notches, and the lead wires are held by hooking them into the notch of the insulating film. be able to. Therefore, tape is not required, costs can be reduced, lead wire processing can be facilitated, and characteristics can be stabilized.

In addition, in the second embodiment, the method and shape of the cutout of the insulating film can be any method as shown in Figures 6 to 8.
It is sufficient if the lead wire can be held.

However, currently, the shape shown in Figure 6 is the most stable with fewer hook mistakes.Also, the method of fixing the insulating film is by ultrasonic bonding, but the point is that the insulating film cannot be fixed to the bobbin or the insulating film itself. That's good.

As described above, according to the present invention, by adding a predetermined notch f=1 to the insulating film, lead wire processing is facilitated, productivity is improved, taping work is eliminated, and costs are reduced. , which also exhibits the effect of stabilizing the characteristics.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional example, Fig. 2d is a perspective view of a completed high-voltage coil according to an embodiment of the present invention, Fig. 3 is a sectional view of the same,
FIG. 4 is a plan view of the same, FIG. 5 is a side sectional view, and FIGS. 6 to 8 are perspective views showing the shape of a cutout of the insulating film. 1...Bobbin, 2...Terminal, 3...
...Copper wire, 4...Insulation fillo 8.6...
...Tape, 6...Bobbin, completed...
Terminal, 8...mW, 9...Insulating film. Name of agent: Patent attorney Toshio Nakao and one other person V=
Missing 3M Figure 4 Figure 5 Figure 7 29

Claims (1)

[Claims] It has a bobbin, a copper wire wound around the outer circumferential surface of the bobbin to form a multilayer coil, and an insulating film wound for insulation between each of the coils, and at the beginning and end of winding of each of the coils. In order to process the wires in a direction perpendicular to the winding direction of the same coil, a notch is provided from the side edge of the insulating film at a right angle processing point to which the winding start and end wires of each coil can be hung; This multilayer solenoid coil is made by forming and cutting out cut-outs of this insulating film.