JPH0492339A - Coil former for deflection yoke - Google Patents

Abstract

PURPOSE:To make it feasible to wind a deflection yoke having a predetermined performance without possessing coil formers for every number of inch or every manufacture by constituting a winding-forming unit for winding and forming the horizontal coil of the deflection yoke in such a way that the winding-forming curved surface is made arbitrarily changeable. CONSTITUTION:As to the coil-forming curved surfaces of a male mold 12 and a female mold 11 and their combined cross-section, the curved surfaces of the cross-section and the length of the coil former can be arbitrarily set up. For the control, a computer is used so as to form the curved surface set up in advance in accordance with a cathode ray tube for every number of inch or every manufacturer by means of many curved surface controllers disposed inside the coil former. For the universal curved surfaces 11, 12 of the coil former, a thin and resilient titanic alloy or the like is used. An amount of change in length corresponding to the change of the curved surface can be compensated in such a way that the universal curved surface 11 gets into the position 16 belonging to the coil former, which does not form the coil, by a pulling spring 15 of the universal curved surface, so that the expansion and contraction involved in the movement of the curved surface may be absorbed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a deflection yoke winding form used in television receivers and the like.

Conventional technology The conventional deflection yoke winding form will be explained below.

FIG. 6 shows a front view of a male type of the conventional deflection yoke winding die, showing the coil forming portion 1. Center key 2. Epoxy 3. It consists of guides 4 and 5.

FIG. 7 shows a sectional view taken along the line AA' of the male mold shown in FIG. 6, and FIGS. 8 and 9 show a front view and a top view of the female mold.
Guide 6, coil forming part 7. Center key 8. It consists of a center key 9.

FIG. 10 shows a sectional view when the male die 1 and the female die 7 are combined. The curved surfaces of these winding forms are always constant, and of course the fit between the male die 1 and the female die 7 can be adjusted slightly by using a gap adjustment nuvesa, but the curved surface of the basic part will not change.
is being kept.

Problems to be Solved by the Invention However, when using the conventional deflection yoke winding type as described above, the inch sizes of cathode ray tubes such as those used in television receivers vary widely, and the manufacturers of cathode ray tubes Due to the different characteristics of the
Screen distortion, optimal position of deflection yoke, neck shadow tolerance,
In order to satisfy sensitivity, etc., it is necessary to design and own a winding form for each type. For this reason, the number of types of winding forms is wide and increasing, and especially during production, when switching between models, it is necessary to remove a heavy winding form from the winding machine and then put another winding form on it, which causes switching loss and operation. rate decreases. As a solution to these problems, there are methods such as forming a deflection coil using a winding frame and placing pins on a part of the winding form, but these methods satisfy these characteristics. The problem was that the number of models continued to increase.

The present invention solves the above-mentioned conventional problems, and aims to provide a winding form that can be used to wind a deflection yoke having a predetermined performance without having to own a winding form for each inch or manufacturing company as in the past. This is the purpose.

Means for Solving the Problems In order to solve the problems above, the deflection yoke winding die of the present invention further provides the optical curved surfaces of the male and female molds on which the deflection yoke is wound to form a coil, and their lengths. However, it attempts to change the dimensions of a curved surface to an arbitrary size using hydraulic or pneumatic two-mechanical drive, etc., under control from a computer.

Effect: According to the above structure, the cross-sectional area of the portion forming the male-type and female-type deflection coil can be arbitrarily changed, and the cathode ray tube can easily achieve a desired magnetic field distribution. I can do it.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the invention.

The cross section of the curved surfaces forming the coil of the male mold 12 and the female mold 11 is set to an arbitrary H as shown in FIG. .

These controls are controlled by a computer, and a number of curved surface controllers installed inside the winding form are used to configure curved surfaces preset to suit each inch size and cathode ray tube made by each manufacturer. is being done. In FIGS. 2 and 3, the curved surface controller is a small hydraulic cylinder 13° 14 (
or using pneumatic cylinders or mechanical drives).

In FIG. 1, the freely curved surfaces 11 and 12 of the winding former are made of thin and elastic titanium alloy or the like.

As shown in FIG. 4, the change in length corresponding to the change in the curved surface is caused by the movement of the curved surface when the freely curved surface 11 is inserted into the attached part 16 of the winding form that does not form a coil by the freely curved tension spring 15. It is constructed to be able to absorb the accompanying expansion and contraction. FIG. 5 shows the case of the male type of the present invention, which operates in the same way as FIG. 4.

Effects of the Invention According to the present invention as described above, it is not necessary to have a coil winding mold for each inch size and for each cathode ray tube made by all manufacturing companies, and it is possible to use a single mold to wind each inch size and each cathode ray tube. For each cathode ray tube manufactured by all manufacturers, various characteristics such as compergenne 1 screen distortion, optimum deflection yoke position, neckshaft tolerance, sensitivity, etc. can be satisfied. As a result, the number of types of winding types does not increase, there is no need to take down and load a heavy winding form from the winding machine to change the model, and there is no need to change over, which improves the operating rate.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a combination of a male mold and a female mold showing an embodiment of the present invention, Fig. 2 is a sectional view of a top view of the female mold of the present invention, and Fig. 3 is a sectional view of the male mold of the present invention. FIG. 4 is an enlarged cross-sectional view of the top surface of the female mold of the present invention, FIG. 5 is a top view of the male mold of the present invention, and FIG. 8 is a front view of the conventional female mold. 9th
The figure is a top view of a conventional female mold, and FIG. 10 is a cross-sectional view when the conventional male mold and female mold are combined. 1.7, 11.12... Coil forming part, 2, 8
... Center key 10 ... Coil L
13゜14...Cylinder (hydraulic, air 2 machines), 15゜17...Tension spring with freely curved surface, 1
6.18...Slit-like groove for freely curved expansion and contraction absorption. Name of agent Patent attorney Shigetaka Awano and 1 other person Figure Figure

Claims (1)

[Claims] A deflection yoke winding die in which the winding forming portion, which winds and forms the horizontal coil of the deflection yoke, has a winding forming curved surface that can be arbitrarily changed.