JPS585314Y2 - Deflection yoke for image pickup tube - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a deflection yoke for an image pickup tube that is configured to efficiently connect lead wires.

In a conventional deflection yoke for an image pickup tube, the connection portion between the lead wires of the focus coil and deflection coil and the lead wires for external connection is made of two lead wires 1 as shown in FIG.
, 2 are twisted and soldered together to cover the connecting portion 3f, which is then inserted into the groove I of the bobbin 5 as shown in FIG. It was wrapped and fixed.

With such a configuration, the tip of the lead wire must be treated,
Soldering, tube processing, and fixing with adhesive insulating tape are required, resulting in poor productivity, and when external force is applied,
The external force was applied to the connecting portion 31, and there was a risk that the connecting portion would be destroyed, resulting in poor reliability.

The present invention eliminates the above-mentioned drawbacks of the prior art.

Hereinafter, the present invention will be explained with reference to FIGS. 3 to 6 of the embodiment drawings.

Reference numeral 6 denotes a coil bobbin into which an image pickup tube is inserted.One end of the coil bobbin 6 (this is provided with a front mirror 8 having a target contact piece 7), and the other end (this is provided with a rear collar 9 to which an alignment section is attached). A focus coil 10 is wound between the front mirror 8 and the rear flange 9, horizontal and vertical deflection coils 11 are mounted on the focus coil 10, and a magnetic shield plate is attached to the outer periphery of the coil 11 within the width. 12
is covered.

On the inside of the rear flange 9 of the coil bobbin 6, there is provided a protrusion 15 with several protrusions 13 on the upper surface and holes 14 such as through holes on the lower part. A lead wire holding portion 18 that guides and holds the external connection lead wire 11 with a plurality of protrusions is provided at a position close to the lead wire drawing-out notch 16 .

That is, the lead wires 19 of the focus coil 10 and the deflection coil 11 and the tips of the external connection lead wires 11 are twisted and soldered to form a connecting portion 20, and this connecting portion 20 is connected to the protruding portion 1.
5, bend the lead wire 17 for external connection in the insertion direction, guide and hold it with the protrusion 13 and lead wire holding part 18, and insert it from the lead wire drawing notch 16 of the rear collar 9 to the outside. Pull it out.

Note that the lead wire 17 for external connection does not need to be completely guided or held by the hollow thread 13 or the lead wire holding portion 18; instead, it is necessary to insert the connection portion 20 through the hole 22/I provided in the protrusion 23 and connect it to the outside. The connecting lead wire 11 may be bent in the insertion direction and passed through the groove portion 21 and drawn out from the lead wire drawing notch 16.

In this case, it is necessary to take care not to loosen the external connection lead wire 17 that has been pulled out. Short circuit accidents and disconnections may occur.

As the deflection yoke for an image pickup tube of the present invention is constructed as described above, the connecting part of the lead wire from the coil and the lead wire for external connection can be fixed by simply inserting the lead wire from the coil into the hole in the protruding part and leading to the external connection lead. Since the wire is folded back in the insertion direction and pulled out externally from the lead wire pull-out notch in the flange, it is easy to fix the connection part, significantly improving assembly work efficiency, and reducing external force '7J.
Even if D is damaged, all of it is absorbed by the external connection lead wire, the connection part is not destroyed, and reliability can be greatly improved, so it is of practical value.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the connection part between the lead wire and the external connection lead wire in a conventional deflection yoke for an image pickup tube, Fig. 2 is a perspective view of the main part showing the fixed state of the connection part, and Fig. 3 is FIG. 4 is an exploded perspective view, and FIGS. 5 and 6 are perspective views of the main parts. 6... Coil bobbin, 7... Target contact piece, 8... Front flange, 9... Rear flange, 10... Focus coil, 11...
...Deflection coil, 12...Shield plate, 13.
... Protrusion, 14, 22 ... Hole, 15゜2
3... Projection, 16... Notch for drawing out lead wire, 17... Lead wire for external connection, 18
...Lead wire holding part, 19...Lead wire, 20...Connection part.

Claims (2)

[Scope of utility model registration request] (1) A coil bobbin with which an image pickup tube can be attached internally, a front mirror with a target contact piece on one end, and a rear flange on which an alignment section is attached on the other end. In a deflection yoke for an image pickup tube in which the outer periphery of the coil is covered with a magnetic shielding plate, a protruding part with a hole for inserting the connection part between the lead wire of the coil and the lead wire for external connection is inserted inside the rear flange of the coil bobbin ( This is a deflection yoke for an image pickup tube, in which a lead wire for external connection of a connection part inserted into a hole f is folded back in the direction of insertion of the connection part and pulled out from a part of the rear flange. (2) Imaging according to Claim 1 of the Utility Model Registration Claim in which the external connection lead wire folded back in the insertion direction of the connection part is held by a lead wire holding part formed by several protrusions (thus) Deflection yoke for pipes.